阅读说明：本技术 卷纸盒 (Roll paper box ) 是由 周昌义 于 2021-10-11 设计创作，主要内容包括：本发明涉及一种卷纸盒,包括盒本体、门体和输纸组件,盒本体包括背板,背板固定在承载主体上以承载卷纸盒,盒本体垂直于背板的一侧设有第一开口,门体封堵于第一开口,门体的一端通过铰接装置与盒本体铰接,门体通过第一锁定机构锁紧在盒本体上,输纸组件包括第一传动轴和第二传动轴,第一传动轴设置在门体上,第二传动轴设置在盒本体内,第一传动轴的中心轴线和第二传动轴的中心轴线在竖直方向间隔设置。该卷纸盒能够从侧面打开门体,能够将卷纸从侧面直接卡在卷纸盒内的纸轴上,不需要取下纸轴,便于更换卷纸,而且通过将第一传动轴的中心轴线和第二传动轴的中心轴线在竖直方向间隔设置,使得卷纸盒在输纸时具有防卡纸的功能。(The invention relates to a paper rolling box, which comprises a box body, a door body and a paper conveying assembly, wherein the box body comprises a back plate, the back plate is fixed on a bearing main body to bear a paper rolling box, one side of the box body, which is perpendicular to the back plate, is provided with a first opening, the door body is blocked at the first opening, one end of the door body is hinged with the box body through a hinge device, the door body is locked on the box body through a first locking mechanism, the paper conveying assembly comprises a first transmission shaft and a second transmission shaft, the first transmission shaft is arranged on the door body, the second transmission shaft is arranged in the box body, and the central axis of the first transmission shaft and the central axis of the second transmission shaft are arranged at intervals in the vertical direction. This paper roll box can open the door body from the side, can with the stock form from the direct card of side on the paper axle in the paper roll box, need not take off the paper axle, be convenient for change the stock form, the central axis through the central axis with first transmission shaft and the central axis of second transmission shaft set up at vertical direction interval moreover for paper roll box has the function of preventing the card paper when defeated paper.)

1. The utility model provides a paper roll box, includes box body, the door body and defeated paper subassembly, its characterized in that, the box body includes the backplate, the box body perpendicular to one side of backplate is equipped with first opening, the shutoff of the door body in first opening, the one end of the door body pass through hinge means with the box body is articulated, the door body is locked through first locking mechanical system on the box body, defeated paper subassembly includes first transmission shaft and second transmission shaft, first transmission shaft sets up on the door body, the second transmission shaft sets up this internally is of box, the lateral wall of first transmission shaft with the lateral wall butt of second transmission shaft, the central axis of first transmission shaft with the central axis of second transmission shaft sets up at vertical direction interval.

2. The roll paper cassette of claim 1, further comprising a paper cutting assembly disposed below the paper feeding assembly, the paper cutting assembly including a main cutter and an auxiliary cutter spaced apart from the main cutter, a paper cutting port being formed between the main cutter and the auxiliary cutter, a paper feeding port being formed between the first transmission shaft and the second transmission shaft, the paper cutting port and the paper feeding port being spaced apart in a horizontal direction.

3. The paper roll box of claim 1, wherein the first transmission shaft comprises a first rotating shaft and first abutting parts, at least two first abutting parts are arranged on the outer side wall of the first rotating shaft in a spacing sleeved mode, and the first abutting parts abut against the outer side wall of the second transmission shaft; or the like, or, alternatively,

the second transmission shaft comprises a second rotating shaft and at least two second abutting parts, the second abutting parts are sleeved on the outer side wall of the second rotating shaft at intervals, and the second abutting parts are abutted to the outer side wall of the first transmission shaft.

4. The roll paper cassette of claim 1, wherein the first transmission shaft is a driving shaft, and the second transmission shaft is a driven shaft; or the like, or, alternatively,

the first transmission shaft is a driven shaft, and the second transmission shaft is a driving shaft.

5. The roll paper cassette of claim 1, wherein the first locking mechanism comprises:

the shaft sleeve is sleeved at the end part of the first transmission shaft;

the first locking piece is rotatably arranged on the side wall of the box body, and a moving shaft is connected with the first locking piece and is spaced from the rotating center of the first locking piece;

the second locking part is rotatably arranged on the side wall of the box body and clamped with the first locking part, a locking groove for locking the shaft sleeve is formed in the second locking part, the locking groove and the second locking part are spaced at the rotating center, a first spring is arranged on the second locking part, and the first spring always drives the second locking part to rotate towards the direction in which the first locking part is clamped;

the second spring is connected with the moving shaft and always drives the moving shaft to move along a first direction so as to enable the first locking piece to rotate towards the direction of locking with the second locking piece;

first memory wire, first memory wire with the removal axle is connected and the tight setting is in the box is originally internal, during the circular telegram first memory wire pulling removal axle along with first direction opposite second direction removes, so that first retaining member with the separation of second retaining member, the second retaining member with the axle sleeve separation.

6. The roll paper box of claim 1, wherein a containing bin is arranged in the box body, a second opening communicated with the containing bin is arranged in the box body, a first battery is arranged in the containing bin, and the first battery is locked in the containing bin through a second locking mechanism.

7. The roll paper cassette of claim 6, wherein the second locking mechanism comprises:

the lock hook is arranged on the end face, far away from the second opening, of the first battery;

the third locking part comprises a lock catch and a first elastic part, the lock catch is rotatably arranged in the box body and is positioned on the outer side of one end, far away from the second opening, of the accommodating bin, the lock catch and the lock hook are clamped mutually to lock the first battery, one end of the lock catch is connected with the first elastic part, and the first elastic part always has a tendency of driving the lock catch to clamp the lock hook;

the second memory metal wire is arranged in the box body in a tightening mode and connected with the lock catch, and when the second memory metal wire is electrified, the second memory metal wire contracts to pull the lock catch to rotate so that the lock catch and the lock hook can be separated to unlock the first battery.

8. The roll paper box of claim 1, comprising a key, wherein the key comprises a first housing, and a first switch, a second battery and a second functional module which are arranged in the first housing, the first switch is used for controlling the power-off or power-on of the second battery and the second functional module, a first magnet and an unlocking component are further arranged in the box body, the first functional module is electrically connected with the unlocking component, the first functional module controls the unlocking component to unlock through an electric signal, when the first switch is close to the first magnet, the first switch is turned on, and the second functional module can send an unlocking signal to the first functional module.

9. A roll paper box according to claim 1, wherein a roll paper spindle is provided on the back plate, the roll paper spindle comprises a second casing, the second casing is provided with a containing cavity, a clamping block and a control member are provided on the second casing, the control member is rotatably provided in the containing cavity, the second casing is provided with first sliding grooves at intervals, one end of each first sliding groove is communicated with the outside of the second casing, the other end of each first sliding groove is communicated with the containing cavity, the clamping block is slidably provided in the first sliding groove, one end of the clamping block is positioned in the containing cavity and abutted against the inner wall of the roll paper cylinder, the control member passes through the first sliding groove and extends to the outside of the second casing, the other end of the clamping block abuts against the inner wall of the roll paper cylinder, the control member has a first position and a second position, and when the control member is positioned in the first position, the control member drives the clamping block to extend out of the second casing, when the control piece is located at the second position, the control piece drives the clamping block to retract into the second shell.

10. The paper roll cassette of claim 9, wherein the control member includes a cam and a return spring, the cam being connected to the return spring, the return spring urging the control member to the first position.

11. The paper roll cassette of claim 10, wherein the control member further comprises a second elastic member connected to the cam, the second elastic member driving the control member to the second position.

12. The paper roll box of claim 10, wherein the cam is rotatably disposed in the accommodating cavity, an arc-shaped groove is disposed on one side of the second casing, a center of the arc-shaped groove is concentric with a rotation center of the cam, a driving post is convexly disposed on the cam, a free end of the driving post passes through the arc-shaped groove and extends out of the second casing, and a peripheral wall of the cam abuts against the clamping block.

13. The roll paper cassette of claim 12, wherein the moving direction of the latch is always perpendicular to a tangent line of the rotational center of the cam.

14. A roll paper cassette according to claim 9, characterized in that a detection device is provided in the cassette main body, the detection device being capable of detecting whether or not the roll paper jam shaft has paper.

15. The roll paper box according to claim 9, wherein a mounting groove is arranged on the back plate, the mounting groove is adjacent to the roll paper clamping shaft, a slide block is arranged in the mounting groove, a third baffle plate is arranged on the slide block in a protruding mode towards the roll paper clamping shaft, a third spring is connected to one side, away from the roll paper clamping shaft, of the slide block, the third spring always drives the third baffle plate to abut against a first side face of the roll paper clamping shaft, and the first side face is provided with first convex portions at intervals in an annular mode towards the clamping block.

16. The paper roll box of claim 1, wherein the hinge device comprises a first connecting portion and second connecting portions symmetrically disposed at both sides of the first connecting portion in a width direction, the door body is provided with a plurality of screw holes, the first connecting portion is provided with a plurality of holes corresponding to the screw holes, and a first screw penetrates through the holes and is screwed into the screw holes so as to fixedly connect the door body and the hinge device.

17. The paper roll box according to claim 1, wherein at least two gourd holes are formed in the back plate, the paper roll box is arranged on the bearing body, the bearing body is provided with gourd nails corresponding to the gourd holes, one ends of the gourd nails far away from the bearing body are provided with fixing holes, one side wall of the back plate far away from the bearing body is provided with elastic hooks, the gourd nails are inserted into the gourd holes and clamped into narrow ends of the gourd holes, and the elastic hooks are fastened with the fixing holes.

Technical Field

The invention relates to the technical field of machinery, in particular to a paper roll box.

Background

The paper towel is an essential article for people to go out, but in actual life, most people suddenly find that the paper towel is forgotten to be carried when using the paper towel. For this reason, the roll paper is generally dispensed in many places such as restaurants, toilets, hospitals, and the like, and the amount of people is large, and the dispensed roll paper provides great convenience to the travelers. At present, the coil box uses intelligent defeated paper usually, and intelligent defeated paper can not only improve user of service experience, can also avoid appearing the extravagant condition of paper, but intelligent defeated paper is unmanned control usually, and the condition of card paper appears more easily in the coil box when going out paper to lead to the unable play paper of coil box, if the administrator does not discover the problem of coil box card paper for a long time still can damage the working part of the defeated paper of intelligence in the coil box moreover. In addition, still need pull the stock form head and pass the exit slot when changing the stock form after the stock form is used up, the operation is more loaded down with trivial details, simultaneously easy because of both sides atress is uneven when pulling the stock form, leads to the stock form to remove to card paper phenomenon appears.

Disclosure of Invention

The embodiment of the invention aims to: a roll paper box is provided, which has a simple structure, can open a roll paper box cover from the side to replace roll paper, and can not cause paper jam.

To achieve the purpose, the embodiment of the invention adopts the following technical scheme:

the utility model provides a paper rolling box, includes box body, the door body and defeated paper subassembly, the box body includes the backplate, the box body perpendicular to one side of backplate is equipped with first opening, the shutoff of the door body in first opening, the one end of the door body pass through hinge means with the box body is articulated, the door body is locked through a locking mechanical system on the box body, defeated paper subassembly includes first transmission shaft and second transmission shaft, first transmission shaft sets up on the door body, the second transmission shaft sets up this internally of box, the lateral wall of first transmission shaft with the lateral wall butt of second transmission shaft, the central axis of first transmission shaft with the central axis of second transmission shaft sets up at vertical direction interval.

As a preferable scheme of the paper roll cassette, a paper cutting assembly is further arranged below the paper conveying assembly, the paper cutting assembly comprises a main cutter and an auxiliary cutter arranged at an interval with the main cutter, a paper cutting opening is formed between the main cutter and the auxiliary cutter, a paper conveying opening is formed between the first transmission shaft and the second transmission shaft, and the paper cutting opening and the paper conveying opening are arranged at an interval in the horizontal direction.

As a preferable scheme of the paper roll cassette, the first transmission shaft includes a first rotation shaft and first abutting portions, at least two first abutting portions are arranged on the outer side wall of the first rotation shaft in a spaced manner, and the first abutting portions abut against the outer side wall of the second transmission shaft; or the like, or, alternatively,

the second transmission shaft comprises a second rotating shaft and at least two second abutting parts, the second abutting parts are sleeved on the outer side wall of the second rotating shaft at intervals, and the second abutting parts are abutted to the outer side wall of the first transmission shaft.

As a preferred scheme of the paper rolling box, the first transmission shaft is a driving shaft, and the second transmission shaft is a driven shaft; or the like, or, alternatively,

the first transmission shaft is a driven shaft, and the second transmission shaft is a driving shaft.

As a preferable aspect of the roll paper cassette, the first locking mechanism includes:

the shaft sleeve is sleeved at the end part of the first transmission shaft;

the first locking piece is rotatably arranged on the side wall of the box body, and a moving shaft is connected with the first locking piece and is spaced from the rotating center of the first locking piece;

the second locking part is rotatably arranged on the side wall of the box body and clamped with the first locking part, a locking groove for locking the shaft sleeve is formed in the second locking part, the locking groove and the second locking part are spaced at the rotating center, a first spring is arranged on the second locking part, and the first spring always drives the second locking part to rotate towards the direction in which the first locking part is clamped;

the second spring is connected with the moving shaft and always drives the moving shaft to move along a first direction so as to enable the first locking piece to rotate towards the direction of locking with the second locking piece;

first memory wire, first memory wire with the removal axle is connected and the tight setting is in the box is originally internal, during the circular telegram first memory wire pulling removal axle along with first direction opposite second direction removes, so that first retaining member with the separation of second retaining member, the second retaining member with the axle sleeve separation.

As a preferable scheme of the roll paper box, a containing bin is arranged in the box body, a second opening communicated with the containing bin is arranged in the box body, a first battery is arranged in the containing bin, and the first battery is locked in the containing bin through a second locking mechanism.

As a preferable aspect of the roll paper cassette, the second locking mechanism includes:

the lock hook is arranged on the end face, far away from the second opening, of the first battery;

the third locking part comprises a lock catch and a first elastic part, the lock catch is rotatably arranged in the box body and is positioned on the outer side of one end, far away from the second opening, of the accommodating bin, the lock catch and the lock hook are clamped mutually to lock the first battery, one end of the lock catch is connected with the first elastic part, and the first elastic part always has a tendency of driving the lock catch to clamp the lock hook;

the second memory metal wire is arranged in the box body in a tightening mode and connected with the lock catch, and when the second memory metal wire is electrified, the second memory metal wire contracts to pull the lock catch to rotate so that the lock catch and the lock hook can be separated to unlock the first battery.

The preferable scheme of the roll paper box comprises a key, wherein the key comprises a first shell, a first switch, a second battery and a second functional module, the first switch is arranged in the first shell and used for controlling the power-off or power-on of the second battery and the second functional module, a first magnet and an unlocking component are further arranged in the box body, the first functional module is electrically connected with the unlocking component and controlled by an electric signal to unlock the unlocking component, the first switch is close to the first magnet, the first switch is opened, and the second functional module can send an unlocking signal to the first functional module.

As a preferable scheme of the roll paper box, a roll paper clamping shaft is arranged on the back plate, the roll paper clamping shaft comprises a second shell, the second shell is provided with a containing cavity, the second shell is provided with a clamping block and a control part, the control part is rotatably arranged in the containing cavity, the second shell is provided with first sliding grooves at intervals, one end of each first sliding groove is communicated with the outside of the second shell, the other end of each first sliding groove is communicated with the containing cavity, the clamping block is slidably arranged in the first sliding groove, one end of the clamping block is positioned in the containing cavity and abutted against the control part, the other end of the clamping block penetrates through the first sliding groove to extend to the outside of the second shell and abut against the inner wall of a paper tube of roll paper, the control part has a first position and a second position, when the control part is positioned in the first position, the control part drives the clamping block to extend out of the second shell, when the control piece is located at the second position, the control piece drives the clamping block to retract into the second shell.

As a preferable scheme of the paper roll box, the control member includes a cam and a return elastic member, the cam is connected with the return elastic member, and the return elastic member drives the control member to be located at the first position.

As a preferable mode of the paper roll cassette, the control member further includes a second elastic member, the second elastic member is connected to the cam, and the second elastic member drives the control member to the second position.

As the preferred scheme of roll paper box, the cam rotates to be set up hold the intracavity, one side of second casing is provided with the arc wall, the centre of a circle of arc wall with the center of rotation of cam is concentric, the protruding drive post that is provided with on the cam, the free end of drive post passes the arc wall stretches out to the outside of second casing, the periphery wall of cam with the fixture block butt.

As a preferable scheme of the paper roll box, the moving direction of the fixture block is always vertical to the tangent line of the rotating center of the cam.

As a preferable mode of the roll paper box, a detection device is arranged in the box body, and the detection device can detect whether paper exists on the roll paper clamping shaft.

As a preferable scheme of the roll paper box, an installation groove is arranged on the back plate, the installation groove is adjacent to the roll paper clamping shaft, a sliding block is arranged in the installation groove, a third baffle is arranged on the sliding block in a protruding mode towards the roll paper clamping shaft, a third spring is connected to one side, away from the roll paper clamping shaft, of the sliding block, the third baffle is always driven by the third spring to abut against a first side face of the roll paper clamping shaft, and the first side face is provided with first convex portions facing the clamping blocks at annular intervals.

As the preferred scheme of roll paper box, hinge means includes that first connecting portion and symmetry set up the second connecting portion of first connecting portion width direction both sides, set up a plurality of screw holes on the door body, first connecting portion correspond the screw hole is provided with a plurality of trompils, and first screw passes the trompil is twisted extremely in the screw hole so that the door body with hinge means fixed connection.

As the preferred scheme of paper roll box, be provided with two calabash holes on the backplate at least, the paper roll box sets up in bearing the main part, it corresponds to bear the main part the calabash hole is provided with the calabash nail, the calabash nail is kept away from the one end that bears the main part is provided with the fixed orifices, the backplate is kept away from a lateral wall that bears the main part is provided with the elastic hook, the calabash nail inserts calabash hole and card are gone into behind the narrow end in calabash hole, the elastic hook with the fixed orifices lock joint.

The embodiment of the invention has the beneficial effects that: the roll paper box is characterized in that the door body of the roll paper box is arranged on one side perpendicular to the back plate, the door body can be opened from the side, roll paper can be directly clamped on a paper shaft in the roll paper box from the side, the paper shaft does not need to be taken down, the operation is simple, the roll paper is convenient to replace, simultaneously, after the roll paper is installed, a roll paper head is pulled out to one section of the box body, after the door body is closed, the roll paper can be clamped by the door body and the box body, paper penetrating operation is not needed, paper replacing operation is simplified, and paper jamming is avoided; the door body can realize the locking of the door body and the box body through the hinge device and the first locking mechanism, and the door body is convenient to open. In addition, first transmission shaft and secondary drive axle set up along vertical direction interval, form the paper feed mouth between first transmission shaft and the secondary drive axle, and the stock form receives the slope effort between first transmission shaft and the secondary drive axle in paper feed mouth department, avoids the stock form to roll up on the lateral wall of first transmission shaft or secondary drive axle to make this carton have the function of preventing the card paper.

Drawings

The invention is explained in more detail below with reference to the figures and examples.

Fig. 1 is a schematic structural view of a roll paper cassette according to an embodiment of the present invention.

Fig. 2 is an exploded view of the roll paper cassette according to the embodiment of the present invention.

Fig. 3 is a first partial schematic view of a roll paper cassette of an embodiment of the present invention.

Fig. 4 is a partially enlarged view of a portion a of fig. 3.

Fig. 5 is a second partial schematic view of the roll paper cassette of the embodiment of the present invention.

Fig. 6 is a partially enlarged view of fig. 5 at B.

Fig. 7 is a schematic structural diagram of a first locking mechanism according to an embodiment of the present invention.

Fig. 8 is a partial enlarged view at C of the drawing.

FIG. 9 is a schematic view of the attachment of the first retaining member and the second retaining member in accordance with an embodiment of the present invention.

Fig. 10 is a third partial schematic view of the roll paper cassette of the embodiment of the present invention.

Fig. 11 is an exploded view of the first battery and the accommodating chamber according to the embodiment of the invention.

Fig. 12 is an exploded view of the first battery and the accommodating chamber according to the embodiment of the invention.

Fig. 13 is a schematic structural view of a second battery according to an embodiment of the present invention.

Fig. 14 is a schematic structural diagram of a second body according to an embodiment of the invention.

Fig. 15 is a fourth partial schematic view of the roll paper cassette of the embodiment of the present invention.

Fig. 16 is a partial enlarged view of fig. 15 at D.

Fig. 17 is an exploded view of a key according to an embodiment of the present invention.

Fig. 18 is an exploded view of the roll paper chuck shaft according to the embodiment of the present invention.

Fig. 19 is a schematic structural diagram of a third housing according to an embodiment of the invention.

Fig. 20 is a fifth partial schematic view of the roll paper cassette of the embodiment of the present invention.

In the figure:

1. a cartridge body; 11. a back plate; 111. mounting grooves; 1111. a slider; 1112. a third baffle plate; 112. a gourd hole; 113. an elastic hook; 12. an accommodating bin; 121. a first battery; 1211. a third groove; 1212. a sixth chute; 122. a first body; 123. a second body; 1231. a first avoidance notch; 1232. a third through hole; 1233. a cantilever; 1234. a third convex column; 1235. a guide rail; 13. a second opening; 14. a first magnet; 15. a second switch; 16. detecting the circuit board; 17. a front plate; 171. a second chute; 172. a third chute; 173. a fourth chute; 18. positioning a groove; 2. a door body; 21. a second fixed seat; 3. an anti-jamming paper structure; 31. a paper feed assembly; 311. a first drive shaft; 312. a second drive shaft; 32. a paper cutting assembly; 321. a main knife; 322. a secondary knife; 34. a first connecting member; 341. a first limit shaft; 35. a fourth spring; 36. a first baffle plate; 37. a second baffle; 4. a hinge device; 41. a first connection portion; 411. a third opening; 42. a second connecting portion; 421. a first convex column; 422. a second convex column; 5. a movement; 51. a first positioning shaft; 52. a second positioning shaft; 53. a first limit plate; 54. a limiting part; 55. a fifth chute; 56. a second groove; 57. a second avoidance gap; 6. a first locking mechanism; 61. a shaft sleeve; 62. a first locking member; 621. clamping teeth; 622. a first positioning hole; 623. a third positioning hole; 63. a second locking member; 631. a locking groove; 632. a card slot; 633. a second positioning hole; 634. a guide surface; 64. a first spring; 65. a drive member; 651. a movable shaft; 652. a second spring; 653. a first memory wire; 654. a second connecting member; 6541. a second limit shaft; 66. a microswitch; 7. a second locking mechanism; 71. a third locking member; 711. locking; 7111. a first arm; 7112. a second arm; 7113. a first through hole; 712. a first elastic member; 72. a second memory wire; 73. a latch hook; 731. a first groove; 732. a second convex portion; 74. ejecting the assembly; 741. a top rod; 742. a sixth spring; 8. a key; 81. a first housing; 811. positioning the projection; 82. a first switch; 83. iron sheets; 84. a second functional module; 85. an indicator light; 86. a second battery; 9. the roll paper is clamped with the shaft; 91. a second housing; 911. an accommodating chamber; 912. a first chute; 913. an arc-shaped slot; 914. a third avoidance gap; 915. a third housing; 916. a fourth housing; 917. a fourth mounting hole; 918. fixing a column; 919. a fourth groove; 92. a clamping block; 921. a fourth via hole; 93. a control member; 931. a cam; 932. a restoring elastic member; 933. a second elastic member; 934. a first rotating column; 935. a second rotating cylinder; 936. a drive column; 937. a second reinforcing rib; 94. an eighth spring; 95. a first side surface; 96. a first convex portion.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 4, the paper feeding device includes a box body 1, a door body 2 and a paper feeding assembly 31, the box body 1 includes a back plate 11, a first opening is disposed on one side of the box body 1 perpendicular to the back plate 11, the door body 2 is sealed at the first opening, one end of the door body 2 is hinged to the box body 1 through a hinge device 4, the door body 2 is locked 6 on the box body 1 through a first locking mechanism, the paper feeding assembly 31 includes a first transmission shaft 311 and a second transmission shaft 312, the first transmission shaft 311 is disposed on the door body 2, the second transmission shaft 312 is disposed in the box body 1, an outer side wall of the first transmission shaft 311 abuts against an outer side wall of the second transmission shaft 312, and a central axis of the first transmission shaft 311 and a central axis of the second transmission shaft 312 are spaced in a vertical direction. The door body 2 of the roll paper box is arranged on one side perpendicular to the back plate 11, the door body 2 can be opened from the side, roll paper is directly clamped on a paper shaft in the roll paper box, the paper shaft does not need to be taken down, the operation is simple, the roll paper is convenient to replace, meanwhile, after the roll paper is installed, a roll paper head is pulled out to the outside of the box body 1, after the door body 2 is closed, the roll paper can be clamped by the door body 2 and the box body 1, paper penetrating operation is not needed, paper replacing operation is simplified, and paper clamping is avoided; the door body 2 can realize the locking and unlocking of the door body 2 and the box body 1 by arranging the hinge device 4 and the first locking mechanism 6, and the hinge device 4 can keep the door body 2 in an open state, so that the roll paper is convenient to replace. The paper conveying assembly 31 is provided with the first transmission shaft 311 and the second transmission shaft 312 at intervals in the vertical direction, and the joint of the first transmission shaft 311 and the second transmission shaft 312 has oblique resultant force, so that the roll paper can be obliquely discharged, the roll paper is prevented from being wound on the outer side wall of the first transmission shaft 311 or the second transmission shaft 312, and the paper box has a paper jam preventing function.

Further, as shown in fig. 3 and 4, a jam prevention structure 3 is provided in the paper roll cassette, the jam prevention structure 3 includes a paper feeding assembly 31 and a paper cutting assembly 32, the paper cutting assembly 32 is provided below the paper feeding assembly 31, the paper cutting assembly 32 includes a main cutter 321 and an auxiliary cutter 322 spaced apart from the main cutter 321, a paper cutting opening is formed between the main cutter 321 and the auxiliary cutter 322, a paper feeding opening is formed between the first transmission shaft 311 and the second transmission shaft 312, and the paper cutting opening and the paper feeding opening are spaced apart in a horizontal direction. The paper cutting assembly 32 further comprises a first fixing seat and a second fixing seat 21, the main cutter 321 is arranged on the first fixing seat in a sliding mode, the auxiliary cutter 322 is fixedly arranged on the second fixing seat 21, a paper cutting opening is formed between the main cutter 321 and the auxiliary cutter 322, the main cutter 321 can cut the roll paper when being abutted to the auxiliary cutter 322, the paper cutting opening and the paper conveying opening are arranged at intervals in the horizontal direction, and the paper blocking prevention effect of the paper box is further improved.

Specifically, the first transmission shaft 311 is a notch shaft, the second transmission shaft 312 is a cylindrical shaft, the first transmission shaft 311 includes a first rotating shaft and a first abutting portion, at least two first abutting portions are sleeved on the outer side wall of the first rotating shaft at intervals, and the first abutting portions abut against the outer side wall of the second transmission shaft 312. The paper feeding assembly 31 is used for feeding paper, the roll paper at the paper feeding port is likely to have wrinkles due to the interaction force between the first transmission shaft 311 and the second transmission shaft 312, the first transmission shaft 311 is set to be the notch shaft in the embodiment, and the wrinkles can be buffered at the notch to prevent the wrinkles from spreading to the whole paper feeding port, so that the paper box is jammed. In other embodiments, the second transmission shaft 312 is a notched shaft, the first transmission shaft 311 is a cylindrical shaft, the second transmission shaft 312 includes a second rotation shaft and a second abutting portion, at least two second abutting portions are sleeved on an outer side wall of the second rotation shaft at intervals, and the second abutting portions abut against an outer side wall of the first transmission shaft 311.

A first baffle 36 is arranged below the first transmission shaft 311, a gap exists between the first baffle 36 and the first transmission shaft 311, a second baffle 37 is arranged below the second transmission shaft 312, and a gap exists between the second baffle 37 and the second transmission shaft 312. In this embodiment, the first baffle 36 is formed by bending one end of the first fixing seat close to the main knife 321, and the bent first baffle 36 can make the structure more stable. A gap is formed between the first flap 36 and the first transmission shaft 311, so that the first flap 36 can prevent roll paper from being wound into the first transmission shaft 311 without affecting the rotation of the first transmission shaft 311. The second baffle 37 is formed by bending one end of the second fixed seat 21 close to the auxiliary knife 322, so that the stability of the second baffle 37 is improved, and a gap exists between the second baffle 37 and the second transmission shaft 312, so that the second baffle 37 does not influence the rotation of the second transmission shaft 312, and the roll paper can be prevented from being rolled into the second transmission shaft 312.

Preferably, the first transmission shaft 311 is a driving shaft, the second transmission shaft 312 is a driven shaft, the driving shaft is disposed on the door body 2, and the driving shaft can drive the driven shaft to rotate.

In one embodiment, the central axis of the first transmission shaft 311 is higher than the central axis of the second transmission shaft 312 in the vertical direction, the resultant force of the interaction of the first transmission shaft 311 and the second transmission shaft 312 is inclined and biased towards the first transmission shaft 311, so that the roll paper can be obliquely discharged along one side close to the first transmission shaft 311, the paper cutting port is arranged at a position close to the first transmission shaft 311, the inclination direction of the roll paper is just biased towards the paper cutting port, thereby realizing oblique discharge, because the roll paper is inclined towards the first transmission shaft 311, the first baffle 36 is arranged at a position far away from the paper conveying port, so that the first baffle 36 does not affect the efficiency of paper conveying, and can prevent the roll paper from being rolled into the first transmission shaft 311. Also, since the roll paper is inclined toward the first transmission shaft 311, that is, the roll paper is inclined away from the second transmission shaft 312, and the second flap 37 is disposed adjacent to the paper feeding port, the second flap 37 can more quickly exert the effect of preventing paper jam.

In another embodiment, the central axis of the second transmission shaft 312 is higher than the central axis of the first transmission shaft 311 in the vertical direction, the resultant force of the interaction of the first transmission shaft 311 and the second transmission shaft 312 inclines and deflects to the second transmission shaft 312, so that the roll paper can be obliquely discharged along one side close to the second transmission shaft 312, and the paper cutting port is arranged at a position close to the second transmission shaft 312, the inclination direction of the roll paper is just deflected to the paper cutting port, thereby realizing oblique discharge, because the roll paper inclines to the second transmission shaft 312, the second baffle 37 is arranged at a position far away from the paper conveying port, so that the second baffle 37 does not affect the efficiency of paper conveying, and can prevent the roll paper from being rolled into the second transmission shaft 312. Also, since the roll paper is inclined toward the second transmission shaft 312, that is, the roll paper is inclined away from the first transmission shaft 311, the first flap 36 is disposed adjacent to the paper feeding port, and the first flap 36 can more quickly exert the effect of preventing paper jam.

In this embodiment, the carton further comprises an adjusting assembly, the adjusting assembly comprises a fourth spring 35 and a first connecting piece 34, the first connecting piece 34 is rotatably connected with the end of the second transmission shaft 312, one end of the first connecting piece 34 far away from the second transmission shaft 312 is connected with the fourth spring 35, and the fourth spring 35 always has a moving trend of driving the second transmission shaft 312 to be close to the first transmission shaft 311, so that the outer side wall of the second transmission shaft 312 always abuts against the outer side wall of the first transmission shaft 311. In this embodiment, a first mounting hole is disposed at one end of the first connecting member 34, a bearing is disposed in the first mounting hole, the second transmission shaft 312 is inserted in the bearing, so that the second transmission shaft 312 can rotate according to the rotation of the first transmission shaft 311, one end of the first connecting member 34 away from the first mounting hole is connected with one end of the fourth spring 35, the other end of the fourth spring 35 is connected with the cartridge body 1, the fourth spring 35 always has a moving tendency of driving the second transmission shaft 312 to be close to the first transmission shaft 311, so that the outer side wall of the second transmission shaft 312 always abuts against the outer side wall of the first transmission shaft 311, when paper jam occurs at the paper conveying port, the stress at the position where the paper jam occurs at the second transmission shaft 312 increases, so that the first connecting member 34 can extrude the fourth spring 35, so that a gap occurs between the second transmission shaft 312 and the first transmission shaft 311, and the roll paper passes through the paper conveying port through the gap, after the roll paper passes through the paper feeding port, the fourth spring 35 rebounds to enable the second transmission shaft 312 to continuously abut against the first transmission shaft 311, so that the adjusting function of the paper feeding assembly 31 is achieved, and the situation that paper jam occurs in the paper box is further prevented by arranging the adjusting assembly in the paper box.

Specifically, the protruding first spacing axle 341 that is equipped with of one end that second transmission shaft 312 was kept away from to first connecting piece 34, partial fourth spring 35 cover is established outside first spacing axle 341, when the card paper appeared in the defeated paper mouth, adjusting part can adjust second transmission shaft 312, in accommodation process, fourth spring 35 can take place deformation, the lateral wall of first spacing axle 341 can be spacing to fourth spring 35, can concentrate on a direction with the elasticity of fourth spring 35, this structure can improve adjusting part's regulating effect. In addition, the first limit shaft 341 can prevent the middle portion of the fourth spring 35 from being bent and damaged, thereby improving the service life of the fourth spring 35.

In order to improve the regulation effect of first transmission shaft 311, adjusting part is provided with two, and two adjusting part rotate with the both ends of second transmission shaft 312 respectively and are connected, and two adjusting part adjust the both ends of second transmission shaft 312 simultaneously, increase the stability of second transmission shaft 312, have further improved the effect that the carton prevented the card paper.

In this embodiment, as shown in fig. 2, the hinge device 4 includes a first connecting portion 41 and second connecting portions 42 symmetrically disposed on two sides of the first connecting portion 41 in the width direction, the door body 2 is provided with a plurality of screw holes, the first connecting portion 41 is correspondingly provided with a plurality of holes, and a first screw passes through the holes and is screwed into the screw holes to fixedly connect the door body 2 and the hinge device 4. The first connecting portion 41 of the hinge device 4 is detachably connected with the door body 2 through screws, the manufacturing difficulty of the door body 2 is reduced, the installation is convenient, meanwhile, the door body 2 and the hinge device 4 can be made of different materials, the door body 2 is made of a lighter material, the hinge device 4 is made of a material with stronger strength, the weight of the door body 2 can be reduced, and the overall strength of the door body 2 is not affected.

Further, the fixed first projection 421 and the second projection 422 that are equipped with of second connecting portion 42, box body 1 still includes the front bezel 17 that sets up with backplate 11 is relative, and equal interval is provided with second spout 171 and third spout 172 on front bezel 17 and backplate 11, and second spout 171 is rectangular shape spout, and the length of second spout 171 sets up along the horizontal direction, and in first projection 421 slided and sets up second spout 171, third spout 172 was the arc spout, and second projection 422 slides and sets up in third spout 172. When the door body 2 is pulled to be opened, the first convex column 421 rotates in the second sliding groove 171, and meanwhile, the second convex column 422 slides in the third sliding groove 172 along an arc shape, so that the door body 2 is opened and closed.

Further, a fourth sliding groove 173 communicated with the third sliding groove 172 is disposed at the upper end of the third sliding groove 172, the fourth sliding groove 173 is a long-strip-shaped sliding groove, the fourth sliding groove 173 is disposed in parallel with the second sliding groove 171, the second sliding groove 171 has a first end and a second end opposite to the first end (the first end is an end close to the fourth sliding groove 173, and the second end is an end far from the fourth sliding groove 173), the arc center of the third sliding groove 172 is located at the first end, when the second protruding pillar 422 slides in the third sliding groove 172, the first protruding pillar 421 rotates and is located at the first end, when the second protruding pillar 422 moves in the fourth sliding groove 173, the first protruding pillar 421 slides from the first end to the second end, so that the door 2 is kept in an open state. Through setting up fourth spout 173, and fourth spout 173 and second spout 171 parallel arrangement, when second projection 422 slided to fourth spout 173 from third spout 172, light push door body 2 forward, make first projection 421 and second projection 422 remove the other end of spout along same direction respectively in second spout 171 and fourth spout 173, first projection 421 and second projection 422 support respectively in second spout 171 and fourth spout 173, can make door body 2 keep opening the state, when changing the stock form, need not hold up door body 2 always, prevent door body 2 landing.

In this embodiment, the first transmission shaft 311 and the second fixing seat 21 are disposed at one end of the door body 2 far away from the second connecting portion 42, the second fixing seat 21 is connected with the door body 2 through a screw, and the first transmission shaft 311 is connected with the door body 2 through the second fixing seat 21. Both sides atress is uneven when using the stock form, leads to the stock form to remove easily to card paper phenomenon appears, sets up first transmission shaft 311 through the one end of keeping away from second connecting portion 42 at the door body 2, can carry the exit slot with the stock form uniformly, reduces the condition that the card paper appeared, does not need manual pulling stock form simultaneously, avoids appearing the disconnected condition that falls of stock form in the stock form box when the pulling stock form, facilitates the use stock form.

Preferably, the first transmission shaft 311 is located at a lower end of the door body 2, and the second connection portion 42 is located at an upper end of the door body 2. The paper outlet is arranged below the paper rolling box, and the first transmission shaft 311 is also arranged at the lower end of the door body 2 and corresponds to the paper outlet, so that the paper rolling is convenient to convey.

In this embodiment, as shown in fig. 2, the second fixing seat 21 is provided with a second mounting hole, the second mounting hole is provided with an avoiding notch, and the first transmission shaft 311 is mounted in the second mounting hole from the avoiding notch. Through set up second mounting hole and dodge the breach at second fixing base 21, be convenient for dismouting first transmission shaft 311. Specifically, one end of the first transmission shaft 311 is powered by a gear assembly and a driving device, and one end of the first transmission shaft 311 near the gear assembly is fixed by a bushing 61 and a gasket combination.

In this embodiment, the door body 2 is made of plastic, the hinge device 4 is made of metal, and the first connecting portion 41 is provided with the third opening 411 at intervals. The door body 2 is made of plastic, the weight of the paper roll box can be reduced, the hinge device 4 is made of metal and is installed on the door body 2, the overall strength of the door body 2 can be enhanced, and meanwhile the first connecting portions 41 are provided with the third openings 411 at intervals, so that the weight of the hinge device 4 can be reduced.

Specifically, box body 1 and 2 inside walls of the door body all are equipped with first strengthening rib. The inside wall of box body 1 and the door body 2 is equipped with a plurality of screw holes and is connected with other spare parts, sets up the intensity that can increase the roll-up carton with first muscle, and the wall thickness of box body 1 and the door body 2 can design more frivolously simultaneously, reduces the weight of roll-up carton.

In this embodiment, as shown in fig. 5 to 8, the door body 2 and the box body 1 are locked by the first locking mechanism 6, which includes a shaft sleeve 61, a first locking member 62, a second locking member 63, a second spring 652 and a first memory wire 653, the shaft sleeve 61 is sleeved on the end portion of the first transmission shaft 311, the first locking member 62 is rotatably disposed on the side wall of the box body 1, the first locking member 62 is connected with a moving shaft 651, the moving shaft 651 is spaced from the rotation center of the first locking member 62, the second locking member 63 is rotatably disposed on the side wall of the box body 1, the second locking member 63 is snap-connected with the first locking member 62, the second locking member 63 is provided with a locking groove 631 for locking the shaft sleeve 61, the locking groove 631 is spaced from the rotation center of the second locking member 63, the second locking member 63 is provided with a first spring 64, the first spring 64 always drives the second locking member 63 to rotate toward the direction of locking with the first locking member 62, the second spring 652 is connected to the moving shaft 651, the second spring 652 always drives the moving shaft 651 to move in the first direction so that the first locking member 62 rotates toward the direction of locking with the second locking member 63, the first memory wire 653 is connected to the moving shaft 651 and is disposed in the cartridge body 1 in a tightened manner, and when the power is applied, the first memory wire 653 pulls the moving shaft 651 to move in the second direction opposite to the first direction so that the first locking member 62 is separated from the second locking member 63, and the second locking member 63 is separated from the shaft sleeve 61. It can be understood that the shaft sleeve 61 is sleeved on both ends of the first transmission shaft 311 so as not to affect the rotation of the first transmission shaft 311 under the condition of locking the first transmission shaft 311, the driving member 65 composed of the moving shaft 651, the second spring 652 and the first memory metal wire 653 drives the first locking member, thereby controlling the locking and the unlocking of the first locking member 62 and the second locking member 63, specifically, the moving shaft 651 is connected with the second spring 652, one end of the second spring 652 far from the moving shaft 651 is connected with the cartridge body 1, so that the second spring 652 can drive the moving shaft 651 to move along the first direction, and since the moving shaft 651 is connected with the middle portion of the first locking member 62, the moving shaft 651 drives one end of the first locking member 62 far from the rotation center to rotate along the rotation center when moving along the first direction, so as to lock the first locking member 62 and the second locking member 63, even if the door body 2 is pulled by external force, the shaft sleeve 61 can not be disengaged from the locking state, so that the roll paper box cannot be opened. When first memory wire 653 circular telegram state, first memory wire 653 circular telegram contracts so that the pulling force increase of first memory wire 653, first memory wire 653 pulling removes axle 651 and removes toward the second direction, remove axle 651 drives first retaining member 62 and rotate along the direction that breaks away from with second retaining member 63, second retaining member 63 loses the effort of first retaining member 62 chucking, and because second retaining member 63 takes place to rotate under the drive of first spring 64, make axle sleeve 61 break away from the constraint of locking groove 631, axle sleeve 61 breaks away from behind the constraint alright open door body 2, consequently only need let first memory wire 653 circular telegram alright realize the unblock, whole unlocking process easy operation, and the carton need not to set up exposed lockhole, safety and reliability.

In order to enable the first memory wire 653 to move the shaft 651, when the first memory wire 653 is energized, the contraction force of the first memory wire 653 is greater than the elastic force of the second spring 652, so that the first memory wire 653 can pull the moving shaft 651 to move, thereby enabling the locking groove 631 to remove the locking of the shaft sleeve 61.

Specifically, as shown in fig. 9, a locking groove 632 is disposed on the second locking member 63, a latch 621 is disposed on the first locking member 62 corresponding to the locking groove 632, and the latch 621 is always abutted against the locking groove 632. In this embodiment, the rotation center of the locking groove 632 and the second locking member 63 is spaced, the locking groove 632 is a V-shaped locking groove 632, the latch 621 is a V-shaped latch 621 matching with the V-shaped locking groove 632, however, the V-shaped latch 621 and the V-shaped locking groove 632 have a large clamping force, and are not easily disengaged when the V-shaped latch 621 and the V-shaped locking groove 632 are clamped, and the locking effect of the first locking mechanism 6 can be improved by the structure. In addition, the V-shaped latch 621 includes a first abutting surface and a second abutting surface disposed at an included angle, and the V-shaped latch 632 includes a third abutting surface and a fourth abutting surface disposed at an included angle. In the locked state of the first locking member and the second locking member, the first abutting surface abuts against the third abutting surface, the second abutting surface abuts against the fourth abutting surface, and the abutting surfaces and the force-receiving direction of the movement of the first locking member 62 and the second locking member 63 determine that the latch 621 and the notch 632 do not fall off even if the first locking member 62 does not apply the locking force by the second spring 652 and the moving shaft 651. The second spring 652 of this structure can be locked with a very small elastic force and needs to be broken from the outside to be opened.

In this embodiment, be provided with core 5 in the box body 1, core 5 is fixed and is close to exit slot department at the lower extreme of box body 1, first retaining member 62 and second retaining member 63 all are provided with two, and be located the relative both sides wall of core 5 respectively, it is connected with first retaining member 62 respectively to remove axle 651 both ends, the locking groove 631 that sets up on two second retaining members 63 locks the axle sleeve 61 that first transmission shaft 311 both ends set up respectively, improve the locking effect to the door body 2, and first memory wire 653 is connected with the middle part of removing axle 651, when making first memory wire 653 pulling remove axle 651, it rotates more harmoniously to remove first retaining member 62 that axle 651 both ends are connected.

Specifically, still be provided with fifth spout 55 on the relative both sides wall of core 5, move the axle 651 both ends and all wear to establish in fifth spout 55, when first memory wire 653 pulling moves axle 651 and removes, fifth spout 55 can carry on spacingly to moving axle 651 for moving axle 651 can only remove in fifth spout 55, improves the stability of carton unblock process.

In this embodiment, the first locking mechanism 6 further includes a second connecting member 654, the moving shaft 651 is connected to the second connecting member 654, one end of the second spring 652 is fixed to the second connecting member 654, the other end of the second spring is connected to the cartridge body 1, one end of the first memory wire 653 is connected to the second connecting member 654, the other end of the first memory wire 653 is connected to the conductive post in the cartridge body 1, and the conductive post is electrically connected to the control circuit board in the cartridge body 1 through a conductive wire, so that the second spring 652 and the first memory wire 653 can more effectively apply an acting force to the moving shaft 651, and the moving shaft 651 is driven to move by driving the second connecting member 654 to move. In this embodiment, the control circuit board controls the conductive column to be powered on, so that the first memory metal wire 653 is powered on to contract, the paper box is unlocked, and the whole unlocking process is simple to operate.

Further, a second limit shaft 6541 is arranged on the second connecting piece 654, and a part of the second spring 652 is sleeved outside the second limit shaft 6541. In this embodiment, two second limiting shafts 6541 are disposed at intervals on the second connecting member 654, two second springs 652 are also disposed, and the side walls of the second limiting shafts 6541 can prevent the second springs 652 from shifting when extending and retracting along the second direction to affect the locking effect of the first locking mechanism 6.

As a preferable scheme, two third mounting holes are formed in the second connecting part 654, the two third mounting holes are arranged at intervals, the moving shaft 651 is inserted into the third mounting holes, and the two third mounting holes are connected with the middle part of the moving shaft 651, so that the movements of the first locking parts 62 at the two sides of the movement 5 can be kept synchronous, the door opening effect is ensured, otherwise, the first transmission shaft 311 is opened at one side and locked at the other side.

Preferably, a first positioning shaft 51 and a second positioning shaft 52 are disposed on a side wall of the movement 5, the first positioning shaft 51 and the second positioning shaft 52 are disposed at an interval, a first positioning hole 622 is disposed at one end of the first locking member 62, the first positioning shaft 51 is inserted into the first positioning hole 622, a second positioning hole 633 is disposed at a rotation center of the second locking member 63, and the second positioning shaft 52 is inserted into the second positioning hole 633. The positioning effect is obtained by providing the first positioning shaft 51 and the second positioning shaft 52 on the side wall of the movement 5, and the mounting efficiency of the first locking member 62 and the second locking member 63 can be improved.

Preferably, the first locking member 62 is provided with a third positioning hole 623, the third positioning hole 623 is located between the latch 621 and the first positioning hole 622, and the end of the moving shaft 651 is inserted into the third positioning hole 623.

In order that the sleeve 61 can smoothly slide into the locking groove 631 when the door body 2 is closed, the second locker 63 has a guide surface 634 provided at an end thereof adjacent to the door body 2, and the guide surface 634 can guide the sleeve 61 into the locking groove 631. A connection surface is provided between the guide surface 634 and the locking groove 631, and an included angle between the guide surface 634 and the connection surface is an obtuse angle, which is advantageous for guiding the sleeve 61 into the locking groove 631 when the door body 2 is closed, thereby improving the smoothness of closing the door body 2. The connecting surface is acute angle with the side wall of the locking groove 631, and when the door body 2 is locked, the shaft sleeve 61 arranged on the first transmission shaft 311 is not easy to be forced by external force to break away from the locking groove 631 to open the door body 2.

Preferably, a microswitch 66 is arranged on the side wall of the movement 5, the microswitch 66 is positioned below the second locking piece 63, and the microswitch 66 can detect the opening and closing state of the door body 2. In this embodiment, micro-gap switch 66 is the leaf switch, detects the on-off state of the door body 2 through the leaf switch, avoids forgetting to close the door body 2 after changing the stock form and takes away the stock form of carton by other people to cause losing of resource.

Preferably, a limiting part 54 is further disposed on the sidewall of the movement 5, and the limiting part 54 can prevent the second locking member 63 from over-rotating.

Preferably, still the protrusion is provided with two first limiting plates 53 on the lateral wall of core 5, and two first limiting plates 53 interval sets up, and micro-gap switch 66 installs between two first limiting plates 53, and two first limiting plates 53 are spacing to the relative both sides of micro-gap switch 66 to prevent that micro-gap switch 66 from taking place to rock.

In this embodiment, as shown in fig. 10 to 12, the paper roll box is intelligently fed by the paper feeding assembly 31, so the first battery 121 is disposed in the paper roll box, and the first battery 121 can supply power to all the power consumption devices in the paper roll box. Therefore, a containing chamber 12 is arranged in the box body 1, a second opening 13 communicated with the containing chamber 12 is arranged on the box body 1, a first battery 121 is arranged in the containing chamber 12, the first battery 121 is locked in the containing chamber 12 through a second locking mechanism 7, the second locking mechanism 7 comprises a locking hook 73, a third locking member 71 and a second memory metal wire 72, the locking hook 73 is arranged on the end surface of the first battery 121 far away from the second opening 13, the third locking member 71 comprises a locking buckle 711 and a first elastic member 712, the locking buckle 711 is rotatably arranged in the box body 1 and is positioned outside one end of the containing chamber 12 far away from the second opening 13, the locking buckle 711 and the locking hook 73 are mutually clamped to lock the first battery 121, one end of the locking buckle 711 is connected with the first elastic member 712, the first elastic member 712 always has a tendency of driving the locking buckle 711 to clamp the locking hook 73, the second memory metal wire 72 is tightly arranged in the box body 1, the second memory metal wire 72 is connected with the latch 711, and when the second memory metal wire 72 is powered on, the second memory metal wire 72 contracts and pulls the latch 711 to rotate so as to separate the latch 711 from the latch hook 73 to unlock the first battery 121. When the first battery 121 completely enters the accommodating bin 12, the lock 711 in the box body 1 and the lock hook 73 on the first battery 121 are mutually clamped to realize the locking of the first battery 121, so that the safety of the first battery 121 in the roll paper box can be ensured, and the first battery 121 is prevented from being lost; by rotationally arranging the latch 711, the second memory wire 72 is electrified and contracted to pull the latch 711 to rotate, the latch 711 is separated from the latch hook 73, and meanwhile, the first battery 121 is pushed out of the accommodating compartment 12 by the elastic force of the first elastic member 712, so that the first battery 121 is unlocked, and the first battery 121 is convenient to replace.

Preferably, the first memory metal wire 653 and the second memory metal wire 72 are both made of nitinol wires, which will contract when powered on and return to their original length when powered off, thereby restoring the third locking member 71. In other embodiments, the memory wire may be made of memory alloy of other materials.

In this embodiment, as shown in fig. 13, one end of the first battery 121 is provided with a first recess 731, one side of the first recess 731 close to the locking buckle 711 is provided with a second protrusion 732 protruding in the width direction of the first battery 121, and when the first battery 121 is locked, the locking buckle 711 slides into the first recess 731 and is tightly clamped with the second protrusion 732.

In this embodiment, as shown in fig. 12, the accommodating chamber 12 includes a first body 122 and a second body 123, the first body 122 is a recessed mounting position on the movement 5, the accommodating chamber 12 for accommodating the first battery 121 is formed between the first body 122 and the second body 123, a first avoiding notch 1231 is provided on the second body 123, and the latch 711 is clamped with the latch 711 through the first avoiding notch 1231. The first body 122 is an upper body, the second body 123 is a lower body, the second body 123 is provided with a first avoiding notch 1231, the latch 711 on the outer side of the end, far away from the second opening 13, of the accommodating bin 12 can enter the accommodating bin 12 through the first avoiding notch 1231, and when the first battery 121 completely enters the accommodating bin 12, the latch 711 can be clamped with the latch hook 73 on the first battery 121, so that the first battery 121 is locked.

In this embodiment, as shown in fig. 11 and 12, the latch 711 includes a first arm 7111 and a second arm 7112 disposed at an included angle, a first through hole 7113 is disposed at a joint of the first arm 7111 and the second arm 7112, a third protruding pillar 1234 is disposed on the second body 123, and the third protruding pillar 1234 is inserted into the first through hole 7113. The third protruding pillar 1234 on the second body 123 is inserted into the first through hole 7113 of the latch 711, so that the latch 711 can rotate around the third protruding pillar 1234, and the third locking member 71 can unlock the first battery 121 conveniently; the first arm 7111 and the second arm 7112 are arranged on the lock catch 711 at an included angle, the first elastic part 712 can be arranged on the second arm 7112, when the lock catch 711 is clamped with the lock hook 73, one end of the first elastic part 712 abuts against the second body 123, the elastic force of the first elastic part 712 enables the lock catch 711 and the second body 123 to be relatively far away, the clamping force of the lock catch 711 and the lock hook 73 can be further increased, meanwhile, the first arm 7111 and the second arm 7112 are arranged at an included angle, the design length of the lock catch 711 can be shorter, and the installation space is reduced.

Preferably, the first arm 7111 and the second arm 7112 are perpendicular to each other, the first elastic element 712 is parallel to the first arm 7111, the acting force of the first elastic element 712 is perpendicular to the width direction of the first battery 121, so that the elastic force of the first elastic element 712 can push the first battery 121 out, and the unlocking effect is better.

Specifically, a positioning column is disposed at an end of the second arm 7112 away from the first through hole 7113, the first elastic component 712 is a fifth spring, and an end of the fifth spring is sleeved on the positioning column. Through setting up the reference column, be convenient for install fifth spring, carry on spacingly to fifth spring simultaneously, prevent that fifth spring from taking place the skew or dropping at the during operation.

In this embodiment, a second through hole is formed at an end of the second arm 7112 away from the first through hole 7113, and the second memory wire 72 is fixed to the second through hole. The latch 711 is fixed with one end of the second memory metal wire 72 through the second through hole, the other end of the second memory metal wire 72 is electrically connected with the circuit board on the box body 1, the second memory metal wire 72 is arranged in parallel with the first arm 7111, the second memory metal wire 72 is electrified and contracts towards the second opening 13 of the accommodating bin 12, the second arm 7112 is pulled to compress the fifth spring, the latch 711 rotates, and the fifth spring pushes the first battery 121 to leave the accommodating bin 12, so that the first battery 121 is separated from the latch hook 73 of the first battery 121.

In this embodiment, the ejection assembly 74 is further included, the ejection assembly 74 includes a push rod 741 and a sixth spring 742, a second groove 56 is disposed on the movement 5, the second groove 56 is disposed at an interval outside one end of the accommodating chamber 12 away from the second opening 13, the second groove 56 is provided with a second avoiding gap 57, the second avoiding gap 57 is communicated with the accommodating chamber 12, the ejection assembly 74 is installed in the second groove 56, one end of the sixth spring 742 abuts against a groove wall of the second groove 56, the other end of the sixth spring is connected with the push rod 741, and the push rod 741 passes through the second avoiding gap 57 and abuts against the first battery 121. When the first battery 121 is locked, the ejection assembly 74 abuts against the first battery 121 through the second avoiding notch 57, the sixth spring 742 on the ejection assembly 74 is elastically deformed, when the second memory metal wire 72 is electrically contracted and the first battery 121 is unlocked, the locking force of the first battery 121 disappears, and the elastic force of the sixth spring 742 of the ejection assembly 74 enables the push rod 741 to push the first battery 121 to be away from the third locking member 71, so that the first battery 121 can be conveniently replaced.

In the present embodiment, as shown in fig. 14, the second body 123 is provided with a third through hole 1232, a cantilever 1233 is provided in the third through hole 1232 in the longitudinal direction of the second body 123, a second protrusion 732 is provided on the cantilever 1233 toward the first body 122, the first battery 121 is provided with a third groove 1211 corresponding to the second protrusion 732, and the second protrusion 732 is inserted into the third groove 1211.

Specifically, the second protrusion 732 includes a first inclined surface and a second inclined surface (not labeled in the figure), the first inclined surface is a surface of the second protrusion 732 close to the first avoidance notch 1231, the second inclined surface is a surface of the second protrusion 732 away from the first avoidance notch 1231, the first inclined surface and the second inclined surface are arranged at an acute angle, an included angle between the first inclined surface and the cantilever 1233 is smaller than an included angle between the second inclined surface and the cantilever 1233, and the first inclined surface and the second inclined surface form the second protrusion 732 with a sharp angle. When the first battery 121 enters the accommodating chamber 12, the second projection 732 can slide into the third groove 1211 and can abut against the wall of the third groove 1211 close to the second opening 13, so as to prevent the first battery 121 from colliding with the accommodating chamber 12 far away from the second opening 13 due to excessive thrust, and to slow down the thrust of the first battery 121; when the first battery 121 is pushed out by the push-out assembly 74, the second projection 732 slides in the third groove 1211 and contacts with one side of the third groove 1211 close to the third locking member 71 and slides out of the third groove 1211, and when the second projection is contacted with one side of the third groove 1211 close to the third locking member 71, a part of pushing force of the first battery 121 can be counteracted, so that the situation that the pushing force of the push-out assembly 74 is too large, and the first battery 121 is directly ejected from the accommodating bin 12 and falls onto the ground, thereby causing damage to the first battery 121 is avoided.

In this embodiment, at least one guide rail 1235 is disposed in the second body 123, the sixth chute 1212 is recessed in the first battery 121, and the guide rail 1235 is inserted into the sixth chute 1212, so that the first battery 121 can slide along the length direction of the guide rail 1235. Through setting up guide rail 1235 and sixth spout 1212, can insert first battery 121 and lock in accommodating bin 12 accurately rapidly, be convenient for change first battery 121, simultaneously after first battery 121 unlocks, the promotion of ejecting subassembly 74 makes first battery 121 pop out, guide rail 1235 and sixth spout 1212 can increase the frictional force of first battery 121 and second body 123, further offset the impact force that first battery 121 received, avoid first battery 121 to drop, protect first battery 121.

In the present embodiment, the first body 122 and the second body 123 are detachably connected. The first body 122 and the second body 123 are detachably connected, and the installation efficiency of the roll paper box is improved.

In this embodiment, as shown in fig. 15, 16 and 17, the paper roll cassette further includes a key 8, the key 8 is used for unlocking the first locking mechanism 6 and the second locking mechanism 7, the key 8 includes a first housing 81, and a first switch 82, a second battery 86 and a second functional module 84 which are disposed in the first housing 81, the first switch 82 is used for controlling the power-off or power-on of the second battery 86 and the second functional module 84, a first functional module, a first magnet 14 and an unlocking component are further disposed in the cassette body 1, the first functional module is electrically connected to the unlocking component, the first functional module controls the unlocking component to unlock through an electrical signal, when the first switch 82 is close to the first magnet 14, the first switch 82 is turned on, the second functional module 84 can send an unlocking signal to the first functional module, so that the first functional module sends an unlocking signal to the unlocking component. When the key 8 is in the standby state, the second functional module 84 in the key 8 is in the power-off state. When needing the unblock, key 8 is close to the roll paper box, that is to say, first switch 82 in the key 8 is close to first magnet 14, first switch 82 receives the magnetism, make first switch 82 open so that second function module 84 circular telegram, can send the unblock signal to first function module after second function module 84 circular telegram, first function module receives unblock signal and then sends the signal of telecommunication to the unblock subassembly and unblock, whole unblock process is high-efficient and simple, only need be close to roll paper box 2 with key 8 and can accomplish the unblock, and it is higher to compare the unblock method security of traditional mechanical lock through the signal of telecommunication unblock. After the key 8 is moved away from the roll paper box, the first switch 82 loses its magnetic properties, so that the second function module 84 is de-energized, and the key 8 enters the de-energized state so that the key 8 no longer consumes power. In addition, the unlocking is carried out through the electric signal, an exposed lock hole is not required to be arranged on the box body 1, the appearance is attractive, and the situation that other people use forged metal keys 8 to be inserted into the lock hole for unlocking can be avoided.

In this embodiment, the unlocking assembly may be a first memory wire 653 in the first locking mechanism 6 and a second memory wire 72 in the second locking mechanism 7, when the key 8 approaches the cartridge body 1, the key 8 is powered on, the second function module 84 sends an unlocking signal to the first function module, and after the first function module receives the unlocking signal, the first function module controls the first memory wire 653 and the second memory wire 72 to be powered on, so that the first memory wire 653 and the second memory wire 72 are powered and contracted to unlock.

Preferably, after the second functional module 84 is powered on, the second functional module 84 and the first functional module are matched with each other by sending a wireless signal, and after the first functional module and the second functional module 84 are successfully matched with each other, the second functional module 84 sends an unlocking signal to the first functional module, so as to improve the safety of the locking device.

Specifically, still be provided with second switch 15 on the inside wall of box body 1, second switch 15 is used for controlling first functional module and power supply part outage or circular telegram, and key 8 is still including setting up the confession magnetism spare in first casing 81, and when confession magnetism spare was close to second switch 15, confession magnetism spare opened second switch 15. In this embodiment, the first functional module includes a signal receiving module, the second switch 15 controls electrical conduction of the signal receiving module, and when the signal receiving module is in the power-off state in the locking state, even if the key 8 sends an unlocking signal to the signal receiving module, the signal receiving module cannot receive the signal, and this design can prevent the operator from inadvertently making the key 8 close to other magnetic members to cause the electrical conduction of the second functional module 84 and the second battery 86 and sending the unlocking signal to the first functional module to unlock. A magnet supply part is arranged in the key 8, and when the key 8 is close to the box body 1, the first magnet 14 enables the first switch 82 to be magnetized to be opened, so that the second functional module 84 is electrified. Meanwhile, the magnetic supply member magnetizes the second switch 15, so that the signal receiving module is powered on, and the second functional module 84 can send an unlocking signal to the signal receiving module, thereby unlocking.

Preferably, the first switch 82 and the second switch 15 are both magnetic switches, and the magnetic switches are switches manufactured by using a magnetic field effect, and have simple structures and low manufacturing costs. In other embodiments, the first switch 82 and the second switch 15 may also use hall sensors, hall switches, or the like.

In one embodiment, the magnetic member is an iron sheet 83, when the iron sheet 83 is close to the box body 1, at least a part of the iron sheet 83 faces the first magnet 14 and the second magnet 15, so that the first magnet 14 can magnetize the iron sheet 83 while the first switch 82 is magnetized, and after the iron sheet 83 is magnetized, the iron sheet 83 can magnetize the second switch 15, and this structure can control the activation of the first switch 82 and the second switch 15 through one first magnet 14, in other words, one first magnet 14 can control the electrical conduction of the first functional module and the second functional module 84 simultaneously, thereby reducing the production cost of the key 8. In other embodiments, the magnetic supply member may be made of other metal materials capable of being magnetized.

Preferably, the first switch 82 is located close to the iron piece 83, so that the first magnet 14 can make the iron piece 83 and the first switch 82 have better magnetic effect at the same time.

Preferably, the second switch 15 is spaced from the first magnet 14 to prevent the magnetic field generated by the first magnet 14 from acting on the second switch 15 and causing the communication function of the first functional module to be in a communication state all the time.

In another embodiment, the magnetic supply member is an electromagnet, and when the key 8 is not close to the box body 1, the key 8 is in the power-off state, but the electromagnet is not magnetic in the power-off state. After the key 8 is close to the box body 1, the second switch 15 is close to the first magnet 14 and is magnetized, the second functional module 84 and the electromagnet are both electrified, the electromagnet has magnetism, the electromagnet can enable the second switch 15 to be magnetized, the signal receiving module is electrified after the second switch 15 is opened, and the first functional module can receive an unlocking signal sent by the second functional module 84.

In another embodiment, the magnetic member includes an iron sheet 83 and a second magnet, the iron sheet 83 and the second magnet are disposed in the first housing 81 at an interval, when the key 8 is close to the box body 1, the second magnet can open the second switch 15 to energize the communication function of the first functional module, so that the first functional module can receive the unlocking signal sent by the second functional module 84, the iron sheet 83 can be fixed with the first magnet 14 by magnetic attraction, so that the key 8 can be fixed on the sidewall of the box body 1, and the stability of communication between the first functional module and the second functional module 84 is ensured.

In order to prevent the magnetic field generated by the second magnet from acting on the first switch 82 after the key 8 is separated from the box body 1, the second magnet is disposed at an interval from the first switch 82, and the influence of the magnetic field generated by the second magnet on the first switch 82 is reduced.

Specifically, the outer side wall of the box body 1 is concavely provided with a positioning groove 18, a positioning protrusion 811 is convexly arranged on the outer side wall of the first casing 81 corresponding to the positioning groove 18, and the positioning protrusion 811 is inserted into the positioning groove 18, so that the first switch 82 is just opposite to the first magnet 14, thereby improving the unlocking efficiency.

Preferably, a detection circuit board 16 is disposed on one side of the first magnet 14, a fixing groove is disposed in the middle of the detection circuit board 16, and the second switch 15 is a dry yellow tube fixed in the fixing groove.

Specifically, the key 8 includes an indicator lamp 85, the indicator lamp 85 is disposed on a side surface of the first housing 81 away from the box body 1, and the energization state of the key 8 can be monitored through the indicator lamp 85, in this embodiment, the indicator lamp 85 indicates that the second function module 84 is energized, and thus the key 8 is in the working state.

In this embodiment, as shown in fig. 15 and 18, a roll paper spindle 9 is disposed on the back plate 11, the roll paper spindle 9 includes a second housing 91, the second housing 91 is provided with an accommodating cavity 911, the second housing 91 is provided with a latch 92 and a control member 93, the control member 93 is rotatably disposed in the accommodating cavity 911, the second housing 91 is provided with a first sliding groove 912 at an interval, one end of the first sliding groove 912 is communicated with the outside of the second housing 91, the other end is communicated with the accommodating cavity 911, the latch 92 is slidably disposed in the first sliding groove 912, one end of the latch 92 is located in the accommodating cavity 911 and abutted against the control member 93, the other end of the latch 92 extends to the outside of the second housing 91 through the first sliding groove 912 and abuts against the inner wall of a roll paper tube of roll paper, the control member 93 has a first position and a second position, and when the control member 93 is located in the first position, the control member 93 drives the latch block 92 to extend out of the second housing 91, and when the control member 93 is located at the second position, the control member 93 drives the latch block 92 to retract into the second housing. Through setting up fixture block 92 and control 93 butt, control 93 rotates and not only can drive fixture block 92 and stretch out outside second casing 91 in order to press from both sides tight stock form, and control 93 can also rotate and keep on the pivoted position between primary importance and the second place simultaneously to the length that control fixture block 92 stretches out second casing 91 realizes changing the diameter of stock form card axle 9, satisfies the installation demand of the stock form in different apertures.

Specifically, the second housing 91 includes a third housing 915 and a fourth housing 916, and the third housing 915 and the fourth housing 916 are detachably connected by screws. By providing the third housing 915 and the fourth housing 916 to be detachably connected, it is easy to install the components in the second housing 91. In other embodiments, the third housing 915 and the fourth housing 916 are removably coupled by a snap-fit.

In the present embodiment, the control member 93 includes a cam 931 and a return elastic member 932, the cam 931 is connected to the return elastic member 932, and the return elastic member 932 drives the control member 93 to the first position. By setting the return elastic element 932 to have a tendency of driving the control element 93 to rotate towards the first position, so that the control element 93 drives the fixture block 92 to extend out of the second housing 91, the fixture block 92 can continuously apply acting force to the inner wall of the paper tube of the roll paper to clamp the roll paper.

Specifically, the control member 93 further includes a second elastic member 933, the second elastic member 933 is connected with the cam 931, and the second elastic member 933 drives the control member 93 to be located at the second position. When the control member 93 is located at the second position, the second elastic member 933 can overcome the elastic force of the return elastic member 932, so that the control member 93 is locked at the second position, and the latch 92 can be retracted into the fourth housing 916.

Specifically, the centers of the third housing 915 and the fourth housing 916 are respectively provided with fourth mounting holes 917, the rotation center of the cam 931 is respectively provided with first rotation columns 934 and second rotation columns 935 toward the third housing 915 and the fourth housing 916, the reset elastic member 932 is mounted on the first rotation column 934, the second elastic member 933 is mounted on the second rotation column 935, and the first rotation column 934 and the second rotation column 935 pass through the fourth mounting holes 917 of the third housing 915 and the fourth housing 916, respectively. When the control member 93 is far away from the first position, the elastic force of the second elastic member 933 can be overcome by pressing the end of the first rotating column 934 passing through the fourth mounting hole 917 of the third housing 915, so that the control member 93 is reset towards the first position, and the fixture block 92 can extend out of the housing body 91 to better clamp the inner wall of the roll paper tube.

In the present embodiment, the cam 931 is rotatably disposed in the accommodating cavity 911, an arc-shaped groove 913 is disposed on one side of the second housing 91, a center of the arc-shaped groove 913 is concentric with a rotation center of the cam 931, a driving column 936 is protrudingly disposed on the cam 931, a suspended end of the driving column 936 passes through the arc-shaped groove 913 and extends to the outside of the second housing 91, and a peripheral wall of the cam 931 abuts against the latch 92. By providing the latch 92 to be always abutted against the outer peripheral wall of the cam 931, when the driving post 936 slides in the arc-shaped groove 913, the cam 931 can rotate in the accommodating chamber 911, the outer peripheral wall of the cam 931 can realize that the latch 92 moves in the first sliding groove 912, and the latch 92 can extend or retract to the second housing 91; meanwhile, the arc-shaped groove 913 can limit the rotation angle of the cam 931 to prevent the driving post 936 from rotating excessively, so that the latch 92 is disengaged from the cam 931.

Specifically, the return elastic member 932 is a first torsion spring, which is in an initial state while overcoming the elastic force of the second elastic member 933 when the cam 931 is at the first position, and needs to rotate while overcoming the elastic force of the first torsion spring when the cam 931 is away from the first position.

Specifically, the moving direction of the latch 92 is always perpendicular to the tangent of the rotational center of the cam 931. Because the latch 92 always abuts against the outer peripheral wall of the cam 931 and is perpendicular to the tangent line of the rotation center of the cam 931, when an external force acts on the latch 92, the external force and the abutting force of the cam 931 cancel each other out, the external force cannot cause the latch 92 to retract into the second housing 91, the telescopic motion of the latch 92 can be controlled only by the rotation of the cam 931, and when the roll paper is clamped, the latch 92 cannot be compressed into the second housing 91, so that the roll paper can be clamped more stably.

In the present embodiment, the eighth spring 94 is disposed on the second housing 91, the eighth spring 94 is connected to the latch 92, and the eighth spring 94 always has a movement tendency of driving the latch 92 to move toward the accommodating cavity 911.

Specifically, as shown in fig. 19, the latch 92 is provided with a fourth through hole 921, the eighth spring 94 is a second torsion spring, the second housing 91 is provided with a fixing post 918, the second torsion spring is mounted on the fixing post 918, and one end of the second torsion spring passes through the fourth through hole 921 and is connected with the latch 92. The second torsion spring is arranged to drive the fixture block 92 to have a tendency of retracting into the second shell 91, when the roll paper clamping shaft 9 has no external force, the acting forces of the reset elastic element 932, the first torsion spring and the second torsion spring counteract each other, the fixture block 92 can be kept at any position in the first sliding groove 912, and the diameter can be adjusted to be proper to clamp the roll paper; meanwhile, the second torsion spring can continuously apply an acting force to the latch 92, so that the latch 92 can slide against the friction force of the first sliding groove 912.

In other embodiments, the eighth spring 94 may have a tendency to drive the latch 92 toward the outside of the second housing 91. The latch block 92 can slide against the frictional force of the first slide groove 912.

In this embodiment, the arc-shaped slot 913 has a third end and a fourth end opposite to each other, the fourth end is provided with a third avoiding gap 914, the cam 931 is provided with a second reinforcing rib 937, the second reinforcing rib 937 is fixed on a side surface of the driving post 936 facing the second end, and when the driving post 936 is located at the fourth end, the locking block 92 is completely retracted into the second housing 91. When the elastic force of the elastic return element 932 overcomes the elastic force of the second torsion spring, the cam 931 rotates to return to the first position, the driving post 936 will rotate towards the third end quickly, and the second reinforcing rib 937 can prevent the driving post 936 from being broken due to too large impact force during the return; when the driving column 936 is located at the third end, the cam 931 is located at the first position, the diameter of the roll paper chuck shaft 9 is the largest, when the driving column 936 is located at the fourth end, the cam 931 is located at the second position, the latch 92 is completely retracted into the second housing 91, the third avoiding notch 914 is arranged to accommodate the second reinforcing rib 937 when the driving column 936 is located at the fourth end, and the driving column 936 is prevented from being blocked from reaching the fourth end.

Preferably, the arc-shaped slots 913 are provided with two arc-shaped slots 913 evenly distributed circumferentially along the rotation center of the cam 931, and one driving post 936 is provided in each arc-shaped slot 913. By arranging the two driving posts 936 to slide in the two arc-shaped grooves 913, the cam 931 can be rotated in the same direction by clamping the two driving posts 936, and the acting force is relatively exerted on the driving posts 936, so that the roll paper can be clamped conveniently and labor-saving.

Preferably, as shown in fig. 20, two roll paper clamping shafts 9 are arranged in the roll paper box, the two roll paper clamping shafts 9 are respectively located at the positions opposite to the back plate 11 and the front plate 17, the two roll paper clamping shafts 9 are respectively arranged to clamp the two ends of the paper tube of the roll paper, the roll paper is replaced to adjust the diameter of the roll paper clamping shafts 9, the roll paper clamping effect is good, the roll paper clamping shafts 9 do not need to be taken down, and the roll paper is convenient to replace.

Further, as shown in fig. 15, an installation groove 111 is provided on the back plate 11, the installation groove 111 is adjacent to the roll paper chuck shaft 9, a slider 1111 is provided in the installation groove 111, the slider 1111 is provided with a third baffle 1112 protruding toward the roll paper chuck shaft 9, a third spring is connected to a side of the slider 1111 away from the roll paper chuck shaft 9, the third spring always drives the third baffle 1112 to abut against a first side surface 95 of the roll paper chuck shaft 9, and the first side surface 95 is provided with first protrusions 96 at intervals in a ring shape toward the latch 92. When actuating mechanism orders about stock form card axle 9 and rotates, the effort of third spring is overcome to stock form card axle 9, order about slider 1111 compression, can not block the continuous rotation of stock form card axle 9, when actuating mechanism stops to drive stock form card axle 9 and rotates, the third baffle 1112 card of the elasticity drive slider 1111 of third spring is in the one side butt of the first convex part 96 on first side 95, it continues to rotate because of inertia to block stock form card axle 9, thereby prevent that the stock form from piling up and taking place the card paper in exit slot department.

Preferably, this internal detection device that is equipped with of box, detection device can detect stock form card axle 9 and whether have paper, and detection device includes circuit board and magnetic induction switch, and box 1 is equipped with the circuit board on being close to the inside wall of stock form card axle 9, is equipped with the magnetic induction switch on the circuit board, and the stock form card axle 9 holds and is provided with two fourth recesses 919 along the rotation centrosymmetry in the chamber 911, is equipped with the third magnet in the fourth recess 919, and when stock form card axle 9 rotated, the third magnet produced magnetic field so that the magnetic induction switch closure circular telegram. When no paper exists in the paper box, the paper winding clamping shaft 9 continuously idles, and the magnetic field generated by the third magnet can continuously enable the magnetic induction switch to be magnetized and electrified; when paper is contained in the paper box, the paper roll clamping shaft 9 cannot continuously idle, a magnetic field generated by the third magnet cannot continuously act on the magnetic induction switch, and whether the paper is contained in the paper box can be judged according to whether the magnetic induction switch can be continuously closed and electrified.

In this embodiment, as shown in fig. 15, at least two gourd holes 112 are provided on the back plate 11, the bearing main body is provided with gourd nails corresponding to the gourd holes 112, one end of the gourd nail far away from the bearing main body is provided with a fixing hole, one side of the back plate 11 far away from the bearing main body is provided with an elastic hook 113, the gourd nail is inserted into the gourd hole 112 and is clamped into the narrow end of the gourd hole 112, and the elastic hook 113 is fastened with the fixing hole. In this embodiment, bear the own wall of main part, be provided with three calabash nail on the wall, three calabash nail is triangular distribution, and the narrow end and the wall of calabash nail are connected, and the calabash nail is perpendicular with the wall to be connected, corresponds on the backplate 11 the calabash nail and is provided with three calabash hole 112. When the roll paper box is installed, the wide end of the gourd nail is inserted into the gourd hole 112 and is clamped into the narrow end of the gourd hole 112, the side wall of the gourd nail can extrude the elastic hook 113 to shift to one side, when the fixing hole in the gourd nail is moved to a proper position, the elastic hook 113 can hook the fixing hole to lock the roll paper box, if the roll paper box needs to be detached from the wall, the door body needs to be opened, the elastic hook 113 is twisted from the inside of the roll paper box so that the elastic hook 113 can not be taken down from the fixing hole again in a fastening manner, and the structure can prevent the roll paper box from being separated from the wall surface when being lifted by external force.

In the description herein, it is to be understood that the terms "upper", "lower", and the like are used in a descriptive sense or positional relationship based on the orientation or positional relationship shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description herein, references to the term "an embodiment" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.