阅读说明：本技术 一种瓦楞纸板生产用托纸架机构 (Corrugated container board production is with holding in palm paper frame mechanism ) 是由 杜威 陶香君 邢连成 于 2021-09-26 设计创作，主要内容包括：本发明公开了一种瓦楞纸板生产用托纸架机构,涉及瓦楞纸板技术领域,包括托板,托板上表面呈凹陷的圆弧形面,托板的一侧设置有缓坡结构,缓坡结构包括：第一坡面,其上开设有多个并列的缺口；多个转动件,其一一对应地转动设置于各缺口内,转动件的转动行程中具有完全容纳于对应的缺口内的第一工位,以及能够延长圆弧形面弧长的第二工位；多个转杆,其一一对应地转动设置于各缺口中,转杆的第一端与转动件抵接配合,当转动件位于第一工位时,转杆的第二端凸出到圆弧形面的上方,当转杆的第二端转动至对应的缺口内时,转杆的第一端驱动转动件转动至第二工位。本发明实现了纸卷既容易滚到托板上,但又不容易从托板上滚落下来的效果。(The invention discloses a paper supporting frame mechanism for corrugated board production, which relates to the technical field of corrugated boards and comprises a supporting plate, wherein the upper surface of the supporting plate is a sunken arc surface, one side of the supporting plate is provided with a gentle slope structure, and the gentle slope structure comprises: the first slope surface is provided with a plurality of parallel notches; the rotating parts are correspondingly and rotatably arranged in the notches one by one, and the rotating stroke of the rotating parts is provided with a first station which is completely accommodated in the corresponding notch and a second station which can prolong the arc length of the arc surface; a plurality of bull sticks, one of them rotates correspondingly and sets up in each breach, and the first end of bull stick cooperates with rotating the piece butt, and when rotating the piece and being located first station, the second end protrusion to the top of arc-shaped face of bull stick, when the second end rotation of bull stick was to corresponding breach in, the first end drive of bull stick rotated the piece and is rotated to the second station. The invention realizes the effect that the paper roll is not easy to roll on the supporting plate but not easy to fall off the supporting plate.)

1. The utility model provides a corrugated container board production is with holding in palm paper frame mechanism, a serial communication port, including the layer board, the layer board upper surface is sunken circular arc face, one side of layer board is provided with gentle slope structure, gentle slope structure includes:

the first slope surface is provided with a plurality of parallel notches;

the rotating parts are correspondingly and rotatably arranged in the notches, and the rotating strokes of the rotating parts are provided with a first station which is completely accommodated in the corresponding notches and a second station which can prolong the arc length of the arc surface;

a plurality of bull sticks, one of them rotates correspondingly and sets up in each breach, the first end of bull stick with rotate the cooperation of piece butt, work as when rotating when being located first station, the second end of bull stick bulges to the top of arc-shaped face, works as when the second end of bull stick rotates in the breach that corresponds, and the first end drive of bull stick rotates to the second station.

2. The paper holder mechanism for corrugated cardboard production as claimed in claim 1, wherein the rotating member has a triangular prism shape having a first curved surface having the same radius as the circular arc surface and a second curved surface in abutting engagement with the first end of the rotating lever.

3. A paper supporting frame mechanism for corrugated board production as claimed in claim 1, wherein the supporting plate is provided with a gradual slope structure at two opposite sides of the parallel arc surface in the axial direction.

4. A paper holder mechanism for corrugated cardboard production as claimed in claim 3 wherein the second end of each rotating rod is rotatably provided with a roller, the axial direction of the roller being in line with the axial direction of the circular arc surface.

5. A paper supporting frame mechanism for corrugated cardboard production as claimed in claim 3 wherein a groove is connected between the two opposing notches of said slow slope structure, a connecting rod is rotatably connected to the second end of each of the two opposing rotating rods of said slow slope structure, the other end of each connecting rod is rotatably connected to a sliding rod, and the sliding rod is vertically slidably disposed on the wall of the groove in the middle.

6. The paper supporting frame mechanism for corrugated board production as claimed in claim 3, further comprising an elastic unit, wherein the elastic force of the elastic unit is used for driving the second end of the rotating rod to be located in the corresponding notch.

7. The paper supporting frame mechanism for corrugated board production as claimed in claim 6, wherein the elastic unit comprises a tension spring, one end of the tension spring is connected with the second end of the rotating rod, and the other end of the tension spring is connected with a supporting plate below the second end of the rotating rod.

8. The paper supporting frame mechanism for corrugated board production as claimed in claim 6, wherein the supporting plate is rotatably provided with a first shaft rod penetrating through the notches of the same gradual slope structure, the rotating rods of the same gradual slope structure are arranged on the first shaft rod in a penetrating manner, the elastic unit comprises a first torsion spring, the first torsion spring is sleeved on the first shaft rod, one end of the first torsion spring is connected with the first shaft rod, and the other end of the first torsion spring is connected with the supporting plate.

9. The paper supporting frame mechanism for corrugated board production as claimed in claim 6, wherein the supporting plate is rotatably provided with a second shaft rod penetrating through the notches of the same gentle slope structure, the rotating members of the same gentle slope structure are arranged on the second shaft rod in a penetrating manner, the elastic unit comprises a second torsion spring, the second torsion spring is sleeved on the second shaft rod, one end of the second torsion spring is connected with the second shaft rod, and the other end of the second torsion spring is connected with the supporting plate; a magnetic attraction structure is arranged between the first end of the rotating rod and the rotating part which is matched with the rotating rod in an abutting mode.

10. The paper supporting frame mechanism for corrugated board production as claimed in claim 1, wherein a moving component is arranged at the bottom of the supporting plate.

Technical Field

The invention relates to the technical field of corrugated boards, in particular to a paper supporting frame mechanism for corrugated board production.

Background

The corrugated board is a plate-shaped object formed by bonding liner paper and corrugated paper of a waveform formed by processing corrugated sticks, is widely used for packaging food or digital products, and has the advantages of low cost, lightness, firmness, good buffering performance and the like. The raw materials of liner paper (commonly called kraft paper) and corrugated paper which is not processed into wave shapes are all rolled into paper rolls with the diameter of about one meter, in order to avoid that the paper rolls are easily affected with damp and mildewed when being directly placed on the ground for a long time, the paper rolls need to be placed on a placing rack or a paper supporting rack, and the edge of the placing rack or the paper supporting rack needs to be provided with bulges for limiting the paper rolls so as to prevent the paper rolls on the paper supporting rack from falling off.

In the prior art, paper rolls are generally directly unloaded onto the ground in a workshop, the paper rolls are in an axial horizontal state, the peripheral side surfaces of the paper rolls are in contact with the ground, then the paper rolls are lifted or rolled onto a paper supporting frame, and two workers are generally required to lift the paper rolls when the paper rolls are lifted, so that the labor and the complexity are very high; if roll the paper roll to holding in the palm on the paper frame, need a guide domatic, the paper roll on ground just can roll to holding in the palm on the paper frame after rolling the arch of crossing holding in the palm paper frame edge through guide domatic, the problem that exists is exactly: if the bulge on the edge of the paper support frame is too high, the slope of the guiding slope is larger, the paper roll is rolled on the paper support frame with more effort, or the distance of the guiding slope is very long, and the guiding slope occupies too much floor space; if the projections at the edge of the pallet are relatively low, there is a risk that the rolls on the pallet will roll off over the projections, especially when transferring rolls through the pallet, which is very easy to roll off the pallet over the lower projections.

Disclosure of Invention

The invention aims to provide a paper supporting frame mechanism for corrugated board production, which aims to overcome the defects in the prior art.

In order to achieve the above purpose, the invention provides the following technical scheme: a paper supporting frame mechanism for corrugated board production, which comprises a supporting plate, wherein the upper surface of the supporting plate is a concave arc surface, one side of the supporting plate is provided with a gentle slope structure which comprises a first slope surface, a plurality of rotating pieces and a plurality of rotating rods, a plurality of parallel notches are arranged on the first slope surface, a plurality of rotating pieces are rotatably arranged in the notches in a one-to-one correspondence manner, the rotating travel of the rotating piece is provided with a first station which is completely accommodated in the corresponding notch, and a second station capable of extending the arc length of the arc surface, a plurality of rotating rods are rotatably arranged in each notch in a one-to-one correspondence manner, the first ends of the rotating rods are in butt fit with the rotating pieces, when the rotating piece is positioned at the first station, the second end of the rotating rod protrudes above the arc surface, when the second end of the rotating rod rotates into the corresponding notch, the first end of the rotating rod drives the rotating piece to rotate to the second station.

Furthermore, the rotating part is in a triangular prism shape and is provided with a first cambered surface with the same radius as the arc-shaped surface and a second cambered surface which is in butt joint with the first end of the rotating rod.

Furthermore, the two opposite sides of the parallel arc-shaped surface on the supporting plate in the axial direction are provided with gentle slope structures.

Furthermore, a roller is rotatably arranged at the second end of each rotating rod, and the axial direction of the roller is consistent with the axial direction of the arc-shaped surface.

Furthermore, a groove is communicated between the two opposite notches of the gentle slope structures, the second ends of the two rotating rods of the gentle slope structures are respectively and rotatably connected with a connecting rod, the other ends of the two connecting rods are rotatably connected onto a sliding rod, and the sliding rod is vertically arranged on the groove wall in the middle of the groove in a sliding manner.

Furthermore, the rotating rod further comprises an elastic unit, and the elastic force of the elastic unit is used for driving the second end of the rotating rod to be positioned in the corresponding notch.

Furthermore, the elastic unit comprises a tension spring, one end of the tension spring is connected with the second end of the rotating rod, and the other end of the tension spring is connected with a supporting plate below the second end of the rotating rod.

Further, rotate on the layer board and be provided with the first axostylus axostyle that runs through each breach on same gentle slope structure, each bull stick on same gentle slope structure runs through the setting on first axostylus axostyle, the elastic element includes first torsional spring, and first torsional spring cover is established on first axostylus axostyle, and first axostylus axostyle is connected to the one end of first torsional spring, and the layer board is connected to the other end.

Furthermore, a second shaft rod penetrating through the gaps of the same gentle slope structure is rotatably arranged on the supporting plate, each rotating piece on the same gentle slope structure is arranged on the second shaft rod in a penetrating mode, the elastic unit comprises a second torsion spring, the second torsion spring is sleeved on the second shaft rod, one end of the second torsion spring is connected with the second shaft rod, and the other end of the second torsion spring is connected with the supporting plate; a magnetic attraction structure is arranged between the first end of the rotating rod and the rotating part which is matched with the rotating rod in an abutting mode.

Further, the bottom of the supporting plate is provided with a moving assembly.

In the technical scheme, the upper surface of the supporting plate is a concave arc surface, paper rolls placed on the supporting plate are not prone to rolling down, the gentle slope structure is arranged, the rotating member is located at the first station completely located in the corresponding notch due to self weight, the paper rolls can roll on the arc surface easily through the first slope surface with the smaller gradient, the paper rolls located on the arc surface press the second end of the rotating rod into the corresponding notch, the first end of the rotating rod lifts the rotating member upwards to the second station, and the rotating member protrudes out of the highest position of the first slope surface, so that the paper rolls on the arc surface are limited, the paper rolls on the supporting plate are prevented from rolling down, and the effect that the paper rolls on the supporting plate easily but are not prone to rolling down from the supporting plate is achieved.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic view of an overall structure of an unsupported paper roll according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the structure taken along line A-A of FIG. 1 according to an embodiment of the present invention;

3-4 are overall structural schematic diagrams of the paper roll supporting device provided by the embodiment of the invention;

FIG. 5 is a schematic structural diagram of a rotating member according to an embodiment of the present invention;

FIGS. 6-7 are schematic views of a structure of an embodiment of the present invention with a double gentle slope structure and without supporting a paper roll;

FIGS. 8-9 are schematic views of a double gentle slope winding mechanism for winding paper according to an embodiment of the present invention;

FIGS. 10-11 are schematic views of a paper roll supporting structure with a double gentle slope structure according to an embodiment of the present invention;

figures 12-13 are schematic views of an unsupported roll according to another embodiment of the invention;

FIGS. 14-15 are schematic views of a paper roll according to another embodiment of the present invention;

FIG. 16 is a schematic view of an overall structure of a tension spring according to still another embodiment of the present invention;

FIG. 17 is a schematic view of an overall structure of the present invention with a first torsion spring;

fig. 18 is a schematic view of an overall structure with a second torsion spring according to still another embodiment of the present invention.

Description of reference numerals:

1. a support plate; 1.1, arc surface; 1.2, a groove; 1.3, a chute; 2. a gentle slope structure; 2.1, a first slope surface; 2.2, a gap; 2.3, a rotating part; 2.31, a first cambered surface; 2.32, a second cambered surface; 2.4, rotating the rod; 2.5, rollers; 3. a connecting rod; 4. a slide bar; 5. an elastic unit; 5.1, a tension spring; 5.2, a first torsion spring; 5.3, a second torsion spring; 6. a first shaft lever; 7. a second shaft.

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.

Referring to fig. 1-18, a paper supporting frame mechanism for corrugated board production according to an embodiment of the present invention includes a supporting plate 1, a circular arc surface 1.1 recessed on an upper surface of the supporting plate 1, a gentle slope structure 2 disposed on one side of the supporting plate 1, the gentle slope structure 2 including a first slope surface 2.1, a plurality of rotating members 2.3 and a plurality of rotating rods 2.4, a plurality of parallel notches 2.2 formed on the first slope surface 2.1, the plurality of rotating members 2.3 being rotatably disposed in the notches 2.2 in a one-to-one correspondence, the rotating members 2.3 having a first station completely received in the corresponding notches 2.2 and a second station capable of extending an arc length of the circular arc surface 1.1, the plurality of rotating rods 2.4 being rotatably disposed in the notches 2.2 in a one-to-one correspondence, a first end of the rotating rod 2.4 being in abutting engagement with the rotating members 2.3, when the rotating members 2.3 are located at the first station, a second end of the rotating rod 2.4 protruding above the circular arc surface 1.1, when the second end of the rotating rod 2.4 rotates into the corresponding notch 2.2, the first end of the rotating rod 2.4 drives the rotating member 2.3 to rotate to the second station.

Specifically, gentle slope structure 2 is located and is on a parallel with the axial one side of arc surface 1.1 on layer board 1, rotates piece 2.3 and is the triangular prism form, rotates piece 2.3 and has a first cambered surface 2.31 the same with arc surface 1.1 radius, when rotating piece 2.3 and being located the second station, first cambered surface 2.31 splices and forms a new cambered surface that waits the radius on arc surface 1.1 to can prevent that the scroll from rolling from first domatic 2.1 on the layer board 1. Further, the sizes of the paper rolls used in the production process of the corrugated board are generally standard sizes, the diameters of the paper rolls are consistent (errors are ignored), the radius of the arc-shaped surface 1.1 is set to be consistent with the radius of the paper roll to be placed, so that after the paper roll is placed on the arc-shaped surface 1.1, the rear side surface of the paper roll can be completely matched with the arc-shaped surface 1.1 and the first arc surface 2.31 of the rotating part 2.3 positioned at the second station, so that the paper roll has almost no moving space on the supporting plate 1, and the paper roll is placed more stably. Rotate piece 2.3 and still have one with the first end butt complex second cambered surface 2.32 of bull stick 2.4, a first section of bull stick 2.4 also is the arc, through first end and the cooperation of second cambered surface 2.32 butt when bull stick 2.4 rotates to the drive rotates piece 2.3 and rotates to the second station from first station. The highest position of the supporting plate 1 relative to one side of the first slope surface 2.1 is not lower than the highest position of the first cambered surface 2.31 of the rotating part 2.3 positioned at the second station.

In the technical scheme, the paper supporting frame mechanism for producing the corrugated board, provided by the invention, has the advantages that the upper surface of the supporting plate 1 is a concave arc surface 1.1, so that paper rolls placed on the supporting plate 1 are not easy to roll down, the gentle slope structure 2 is arranged, the rotating member 2.3 is positioned at the first station completely positioned in the corresponding notch 2.2 due to self weight, the paper rolls can be rolled onto the arc surface 1.1 easily through the first slope surface 2.1 with smaller gradient, the second end of the rotating rod 2.4 is pressed into the corresponding notch 2.2 by the paper rolls positioned on the arc surface 1.1, the first end of the rotating rod 2.4 lifts the rotating member 2.3 upwards to the second station, the rotating member 2.3 protrudes out of the highest position of the first slope surface 2.1, so that the paper rolls on the arc surface 1.1 are limited, the rolling down of the paper rolls on the supporting plate 1 is prevented, and the problem that if the edge of the supporting plate 1 is too high is solved, the guide slope surface is larger in gradient, roll the paper roll to layer board 1 on harder, perhaps guide domatic distance very long, guide domatic too cross take up the problem of ground space, and solved if the protruding ratio at layer board 1 edge is lower, then the paper roll on the layer board 1 exists crosses the arch and rolls the risk that falls, especially can produce when transporting the paper roll through layer board 1 and rock, the paper roll crosses lower arch very easily and rolls the problem that falls from layer board 1, thereby realized that the paper roll both rolled to layer board 1 easily, but be difficult to roll the effect that falls from layer board 1.

In another embodiment provided by the invention, referring to fig. 6 to 18, the two opposite axial sides of the parallel arc-shaped surface 1.1 on the supporting plate 1 are provided with the gradual slope structures 2, so that the paper roll can be very easily rolled onto the supporting plate 1 from any one of the two axial sides of the parallel arc-shaped surface 1.1 on the supporting plate 1, and after the paper roll is positioned on the supporting plate 1, the second ends of the rotating rods 2.4 of the two gradual slope structures 2 can be pressed into the corresponding notches 2.2, so that the rotating members 2.3 of the two gradual slope structures 2 are switched to the second station, and the paper roll on the supporting plate 1 is not easy to roll down.

As a preferable technical solution of this embodiment, referring to fig. 6 to 11, the second end of each rotating rod 2.4 is rotatably provided with a roller 2.5, and an axial direction of the roller 2.5 is consistent with an axial direction of the arc surface 1.1. In the technical scheme, each rotating member 2.3 of the two gentle slope structures 2 should have a self-weight at a first station, the rotating member 2.3 drives a second end of a corresponding rotating rod 2.4 to be at a position protruding out of the notch 2.2 and located above the arc surface 1.1, as shown in fig. 6-7, the axial direction of the paper roll on the ground is parallel to the axial direction of the arc surface 1.1, the paper roll rolls onto the arc surface 1.1 through a first slope surface 2.1 with a smaller adjacent gradient, and the paper roll firstly presses the second end of each rotating rod 2.4 of the gentle slope structure 2 passing through the paper roll into the notch 2.2, so that each rotating member 2.3 of the gentle slope structure 2 passing through the paper roll rotates from the first station to a second station to heighten one side of the arc surface 1.1, as shown in fig. 8-9; the paper roll rolls to the center of the arc surface 1.1 along the arc surface 1.1, the peripheral side surface of the paper roll is in contact with the roller 2.5 on each rotating rod 2.4 of the other gentle slope structure 2, the paper roll presses the second end of each rotating rod 2.4 into the corresponding notch 2.2, and the peripheral side surface of the paper roll rolls between the roller 2.5 in the process, so that the rotating rods 2.4 are prevented from being damaged by the fact that the paper roll extrudes the rotating rods 2.4, the second end of each rotating rod 2.4 is used for preventing the peripheral side surface of the paper roll, each rotating rod 2.4 can avoid the paper roll, the paper roll continuously rolls to the center of the arc surface 1.1, meanwhile, the corresponding rotating piece 2.3 can be switched from the first station to the second station to heighten the other side of the arc surface 1.1, as shown in fig. 10-11, so that both sides of the arc surface 1.1 are heightened, and the paper roll finally stopped at the center of the arc surface 1.1 is limited, and the paper roll is not easy to fall from the arc surface 1.

As another preferable technical solution of this embodiment, referring to fig. 12-15, a groove 1.2 is communicated between two opposite notches 2.2 of the two gentle slope structures 2, second ends of two opposite rotating rods 2.4 of the two gentle slope structures 2 are respectively and rotatably connected with a connecting rod 3, the other ends of the two connecting rods 3 are rotatably connected to a sliding rod 4, a sliding groove 1.3 is formed in a wall of the groove 1.2 at the center, and the sliding rod 4 is vertically and slidably disposed in the sliding groove 1.3. In the technical scheme, each rotating member 2.3 of the two gentle slope structures 2 is at a first station by self weight, the rotating member 2.3 drives a second end of a corresponding rotating rod 2.4 to be at a position protruding out of the notch 2.2 and located above the arc surface 1.1, a connecting rod 3 between the two opposite rotating rods 2.4 is lifted upwards, the corresponding sliding rod 4 slides to the upper end of the sliding chute 1.3, as shown in fig. 12-13, the axial direction of the paper roll on the ground is parallel to the axial direction of the arc surface 1.1, the paper roll is rolled to the arc surface 1.1 through a first slope surface 2.1 with a smaller adjacent gradient, the paper roll presses the second end of each rotating rod 2.4 of the gentle slope structure 2 passing through the paper roll into the notch 2.2, so that each rotating member 2.3 of the gentle slope structure 2 passing through the paper roll is switched from the first station to the second station to heighten one side of the arc surface 1.1, and simultaneously, each rotating rod 2.4 of the gentle slope structure 2 passing through the paper roll passes through the corresponding connecting rod 3, The sliding rods 4 and the sliding grooves 1.3 are matched to enable the second ends of the rotating rods 2.4 of the other gentle slope structure 2 to enter the corresponding notches 2.2, and drive the corresponding rotating pieces 2.3 to rotate and switch from the first station to the second station so as to heighten the other side of the arc-shaped surface 1.1, and the connecting rods 3 also retract into the corresponding grooves 1.2, so that the situation that the paper roll is damaged due to the fact that the peripheral side surface of the paper roll extrudes the second ends of the rotating rods 2.4 of the gentle slope structure 2 which do not pass through yet is avoided, the rotating rods 2.4 can avoid the paper roll, and the paper roll continuously rolls towards the center of the arc-shaped surface 1.1, as shown in fig. 14-15; and then both sides of the arc-shaped surface 1.1 are heightened, and the paper roll finally stopped at the center of the arc-shaped surface 1.1 is limited, so that the paper roll is not easy to roll off from the arc-shaped surface 1.1.

As still another preferable technical solution of this embodiment, referring to fig. 16-18, the device further includes an elastic unit 5, and an elastic force of the elastic unit 5 is used for driving the second end of the rotating rod 2.4 to be located in the corresponding notch 2.2, and the rotating rod 2.4 also makes the corresponding rotating component 2.3 be located in the second position. In the technical scheme, the axial direction of a paper roll on the ground is parallel to the axial direction of an arc surface 1.1, the paper roll rolls to the arc surface 1.1 through an adjacent gentle slope structure 2, during the process, the paper roll firstly contacts each rotating part 2.3 of the gentle slope structure 2, along with the rolling of the paper roll on a first slope surface 2.1 with smaller gradient of the gentle slope structure 2, the paper roll overcomes the elastic force of an elastic unit 5 of the gentle slope structure 2, each rotating part 2.3 of the gentle slope structure 2 is pressed into a corresponding notch 2.2, namely is positioned at a first station, each rotating part 2.3 of the gentle slope structure 2 pressed to the first station by the paper roll drives a second end of a corresponding rotating rod 2.4 to protrude from the notch 2.2 to the upper part of the arc surface 1.1, when the paper roll just rolls to the arc surface 1.1, each rotating part 2.3 of the gentle slope structure 2 passed by the paper roll is not pressed by the paper roll any more, and rotates to reset to a second station under the elastic force of the corresponding elastic unit 5, the roll can roll smoothly to the center of the arc surface 1.1. Due to the elastic force of the elastic unit 5 of the other gentle slope structure 2, the second end of each rotating rod 2.4 is always positioned in the corresponding notch 2.2, and each rotating piece 2.3 is also always positioned in the second station. The paper roll on the arc surface 1.1 also blocks the second end of each rotating rod 2.4, so that each rotating rod 2.4 can not rotate. Thereby avoid appearing because of the damaged condition appears in the second end of the bull stick 2.4 of the gentle slope structure 2 that the lateral surface extrusion of scroll has not passed through, the both sides of circular arc face 1.1 have all been heightened, and the scroll is difficult to roll off from circular arc face 1.1.

Specifically, referring to fig. 16, the elastic unit 5 includes a tension spring 5.1, one end of the tension spring 5.1 is connected to the second end of the rotating rod 2.4, the other end of the tension spring is connected to the supporting plate 1 below the second end of the rotating rod 2.4, and when the supporting plate 1 is used for supporting a paper roll, the second end of the corresponding rotating rod 2.4 is located in the corresponding notch 2.2 due to the elastic force of the tension spring 5.1.

Preferably, referring to fig. 17, the supporting plate 1 is rotatably provided with a first shaft 6 penetrating through each notch 2.2 on the same gentle slope structure 2, each rotating rod 2.4 on the same gentle slope structure 2 is penetrated and arranged on the first shaft 6, and each rotating rod 2.4 is relatively fixed with the corresponding first shaft 6, so that each rotating rod 2.4 on the same gentle slope structure 2 can be very conveniently rotatably installed in the corresponding notch 2.2, and each rotating rod 2.4 rotates synchronously; the elastic unit 5 comprises a first torsion spring 5.2, the first torsion spring 5.2 is sleeved on the first shaft lever 6, one end of the first torsion spring 5.2 is connected with the first shaft lever 6, the other end of the first torsion spring is connected with the supporting plate 1, the elastic force of the first torsion spring 5.2 acts on the first shaft lever 6, and the second end of each rotating rod 2.4 on the first shaft lever 6 is located in the corresponding notch 2.2. Therefore, in a gentle slope structure 2, only by arranging the first torsion springs 5.2 at any end of the first shaft rod 6 or arranging the first torsion springs 5.2 at two ends of the first shaft rod 6, the second ends of the rotating rods 2.4 on the first shaft rod 6 can be driven to be located in the corresponding notches 2.2, so that the cost can be saved, and the situation that each rotating rod 2.4 is correspondingly provided with one tension spring 5.1 as in the scheme is not needed.

Preferably, referring to fig. 18, the supporting plate 1 is rotatably provided with a second shaft rod 7 penetrating through each gap 2.2 of the same gentle slope structure 2, each rotating member 2.3 of the same gentle slope structure 2 penetrates through the second shaft rod 7, each rotating member 2.3 is relatively fixed with the corresponding second shaft rod 7, thus each rotating member 2.3 of the same gentle slope structure 2 can be very rotatably installed in the corresponding gap 2.2, the elastic unit 5 comprises a second torsion spring 5.3, the second torsion spring 5.3 is sleeved on the second shaft rod 7, one end of the second torsion spring 5.3 is connected with the second shaft rod 7, the other end is connected with the supporting plate 1, the elastic force of the second torsion spring 5.3 acts on the second shaft rod 7, so that each rotating member 2.3 of the second shaft rod 7 is located at the second station, a magnetic attraction structure is arranged between the first end of the rotating rod 2.4 and the rotating member 2.3 in abutting fit, specifically, the magnetic attraction structure comprises a first magnet arranged at the first end of the rotating rod 2.4, and set up on rotating 2.3 and first magnet adsorption complex second magnet, rotate 2.3 and pass through the first end of magnetism structure absorption bull stick 2.4 for the second end of bull stick 2.4 is in corresponding breach 2.2 inside, position below the arc surface 1.1 promptly. Thus, in a gentle slope structure 2, only one second torsion spring 5.3 needs to be arranged at any end of the second shaft rod 7 or one second torsion spring 5.3 needs to be arranged at each end of the first shaft rod 6, so that the cost can be saved, and a tension spring 5.1 does not need to be correspondingly arranged on each rotating rod 2.4 as in the previous scheme.

In still another embodiment of the present invention, a moving assembly is provided at the bottom of the supporting plate 1 to move the supporting plate 1 to facilitate transferring the paper roll on the supporting plate 1. The moving assembly is a wheeled, sliding or traction structure of the prior art.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.