阅读说明：本技术 一种用于捆扎带打包机的拉紧装置及其打包机 (Tension device for strapping tape packing machine and packing machine with tension device ) 是由 严远忠 彭向 于 2019-09-29 设计创作，主要内容包括：本发明公开了一种用于捆扎带打包机的拉紧装置及其打包机,拉紧装置包括设置在打包机机座上的以下机构：捆扎带收紧机构,包括：被旋转驱动的收紧轮、位于收紧轮下方的收紧板,将收紧轮与驱动机构进行连接的传动机构,被夹持在收紧轮与收紧板间的环形捆扎带在收紧轮自转带动下实现收紧；收紧轮升降机构,包括：一端通过一枢轴与机座枢接的用于安装收紧轮的收紧轮摆座、枢接于机座的摆杆,将摆杆与收紧轮摆座的自由端进行连接的连接组件,在摆杆的驱动下实现收紧轮摆座和收紧轮相对与收紧板的距离调整。所述拉紧装置结构简单,配合打包机的其他结构使用,操作便利。(The invention discloses a tension device for a strapping machine and the strapping machine, wherein the tension device comprises the following mechanisms arranged on a base of the strapping machine: a strap tensioning mechanism comprising: the annular strapping tape is clamped between the tightening wheel and the tightening plate and is tightened under the self-rotation driving of the tightening wheel; tightening wheel elevating system includes: one end of the swing rod is pivoted with the base through a pivot and is used for installing a tightening wheel swing seat, the swing rod is pivoted on the base, the swing rod is connected with the free end of the swing seat of the tightening wheel, and the distance between the swing seat of the tightening wheel and the tightening plate is adjusted under the driving of the swing rod. The tensioning device is simple in structure, is matched with other structures of the packer for use, and is convenient to operate.)

1. A tensioning device for strapping presses, characterized by the following structure arranged on the press base (1):

a strap tightening mechanism (2) comprising: the rotary tightening device comprises a tightening wheel (21) driven to rotate, a tightening plate (22) arranged on a base plate (11) of the machine and positioned below the tightening wheel, a transmission mechanism for connecting the tightening wheel (21) with the driving mechanism (7), and an annular strapping tape clamped between the tightening wheel and the tightening plate is tightened under the self-rotation driving of the tightening wheel (21);

tightening wheel elevating system (4) includes: one end of the tightening wheel swing seat is pivoted with the machine seat frame body (12) through a pivot (40) and is used for installing a tightening wheel, a swing rod (42) is pivoted with the machine seat, a connecting component (43) is used for connecting the swing rod with the free end of the tightening wheel swing seat, and the distance between the tightening wheel swing seat (41) and the tightening wheel (21) and the tightening plate (22) is adjusted under the driving of the swing rod (42).

2. The tensioning device as claimed in claim 1, characterized in that the base (1) is provided with an elastic component (44), the lower end of the elastic component (44) presses one side (41a) of the take-up pulley swing seat (41) far away from the pivot (40), the elastic component (44) is limited in a limiting cavity between the side edge of the take-up pulley swing seat (41) and the base, and the take-up pulley swing seat (41) is kept in a pressing position under the pressing action of the elastic component (44) so as to realize the pressing of the take-up pulley (21) and the take-up plate (22).

3. The tensioning device as claimed in claim 2, characterized in that the connecting assembly (43) comprises a horizontally arranged connecting rod (431) and a switching swing part (432) with the middle part pivoted to the tensioning wheel swing seat (41), one end of the connecting rod is hinged with the swing rod (42), the other end of the connecting rod (431) is connected with the end part of the switching swing part (432), the swing rod (42) swings under the driving action of external force and drives the tensioning wheel swing seat (41) to swing upwards away from the pressing position to the loosening position through the connecting rod (431) and the switching swing part (432); the tightening wheel swing seat (41) automatically returns to the pressing position under the restoring action of the elastic component (44).

4. A tensioner as claimed in claim 3, characterised in that the transmission comprises a planetary gear transmission (5) in driving connection with the takeup wheel (21).

5. A tensioner as claimed in claim 4, characterised in that the other end of the switch rocker (432) remote from the link is provided with an engagement portion (432a) for cooperation with a planetary gear (5); when the tightening wheel swing seat (41) is lifted to be away from the pressing position, the switching swing part swings to the position where the meshing part (432a) is away from the planetary gear transmission mechanism (5), the planetary gear transmission mechanism cannot transmit to the tightening wheel (21), and the tightening wheel is static; when the tightening wheel swing seat (41) is located at the pressing position, the switching swing part swings to the meshing part (432a) to be meshed with the planetary gear transmission mechanism (5), and the planetary gear transmission mechanism (5) transmits the tightening wheel to drive the tightening wheel (21) to work.

6. The tightening device as claimed in claim 5, wherein the tightening wheel swing seat (41) is provided with an accommodating groove for the first elastic member (45) to be inserted therein, one end of the first elastic member (45) abuts against an inner wall of the accommodating groove, and the other end thereof abuts against a back portion of the engaging portion (432a) to press the engaging portion (432a) against the outer teeth of the planetary gear mechanism (5) which are engaged therewith.

7. Tensioning device according to one of claims 3 to 6, characterized in that a drive gear (61) which is in driving connection with the drive mechanism (7) is arranged on the pivot (40), which drive gear is in external engagement with the outermost first ring gear (62) of the planetary gear (5).

8. The tensioner as claimed in claim 8, wherein a driving mechanism (71) transmits power to a direction coincident with or parallel to the rotation axis of the driving gear (61) through a rotation angle driving bevel gear (71b) provided at the end of the output shaft (71a), a rotation angle driven bevel gear (71c) engaged with the rotation angle driving bevel gear (71); the angle driven bevel gear (71c) is directly or indirectly transmitted to the driving gear (61) through other gear transmission of the coaxial transmission, thereby further transmitting to the planetary gear transmission mechanism (5).

9. A baler employing the tensioning device of claim 9, further comprising:

a strap welding mechanism (3) configured to form a friction welding connection at an overlapping position of the strap loops by means of friction welding elements;

a welding state switching mechanism (8) configured to switch the strap welding mechanism (3) between a welding position and a rest position;

the driving mechanism comprises a first driving mechanism (71) and a second driving mechanism (72), and the output shaft (71a) of the first driving mechanism (71) rotates in one direction and is in transmission connection with the tightening wheel (21) through the planetary gear transmission mechanism (5); the movement of an output shaft (71a) of the first driving mechanism (71) in a second opposite direction drives the strapping welding mechanism (3) to work; the second driving mechanism (72) drives the welding state switching mechanism (8) to work.

10. A baler according to claim 9, characterised in that it is arranged to operate in a first mode or a second mode, in which the baler housing is provided with a first operating element for actuating the drive mechanism, and in which the strap tensioning means (2), the welding state switching means (8), the strap welding means (3) are automatically actuated in succession by operation of the first operating element; the baling machine housing is further provided with a second operating element for actuating the drive mechanism, and in a second mode, the strap tensioning mechanism (2) is actuated by operating the first operating element, and the welding state switching mechanism (8) and the strap welding mechanism (3) are actuated by operating the second operating element.

11. The strapping machine of claim 9 or 10 wherein a strapping band limiting structure is provided, the strapping band limiting structure comprising a left inner limiting plate (91) and a right inner limiting plate (92) for limiting an inner side of the strapping band, and a left outer limiting plate (93) and a right outer limiting plate (94) for limiting an outer side of the strapping band;

the left inner limiting plate (91) and the right inner limiting plate (92) are respectively arranged on the left side surface and the right side surface of the base plate (11), and limiting parts extending upwards of the two limiting plates are close to a straight line where the inner side edge of the tightening plate (22) is located and used for limiting the inner side edge of the strapping tape;

a rocking plate (90) perpendicular to the base plate (11) is arranged at the outer end of the pivot (40) in a linkage manner, the rocking plate (90) is driven by the pivot (40) to synchronously swing up and down when the tightening wheel swing seat (41) swings up and down, the right bottom of the rocking plate (90) is fixedly connected with a right outer limiting plate (94), the outer side surface of the machine seat frame body (12) is pivoted with a left outer limiting plate (93), the left bottom of the rocking plate (90) is in linkage connection with the outer end of the left outer limiting plate (93), and the tightening wheel swing seat (41) drives the connected left outer limiting plate (93) to swing up and down by the rocking plate (90); the projection of the left outer limiting plate (93) and the right outer limiting plate (94) on the horizontal plane is close to the straight line where the outer side of the tightening plate (22) is located, and the two limiting plates after downward swinging limit the outer side of the strapping tape.

Technical Field

The invention relates to the technical field of strapping tape packers, in particular to a tensioning device for a strapping tape packer and the packer.

Background

With the rapid development of science and technology, various types of strapping equipment applied to various fields and meeting different requirements appear. A common strapping method is to pack the article to be packaged with a plastic strapping band, so that a variety of different strapping band packers are available on the market today, by tightening the strapping band around the band-packed article and by fixedly connecting the overlapping head portions of the strapping band by friction welding, the packing is completed. Because portable hand baling press convenient to use, it is convenient to remove, portable baling press application is more and more extensive.

But the tension device of present hand baling press's kind is comparatively single, is mostly imported product, and it is all comparatively high to sell price and cost of maintenance, and the integrated level is high between the internal mechanism, and the maintenance degree of difficulty is also big, consequently is difficult to satisfy user's general demand, also is difficult to at domestic extensive popularization.

Disclosure of Invention

Aiming at the problems of single type, high integration of internal structure, high selling price and high maintenance cost of the tensioning device of the existing hand-held baler, the embodiment of the invention provides a novel tensioning device and a baler using the same.

The technical scheme provided by the invention is as follows:

a tensioning device for a strapping machine comprising the following mechanisms disposed on the base of the machine:

a strap tensioning mechanism comprising: the annular strapping tape is clamped between the tightening wheel and the tightening plate and is tightened under the self-rotation driving of the tightening wheel;

tightening wheel elevating system includes: one end of the swing rod is pivoted with the base through a pivot and is used for installing a tightening wheel swing seat, the swing rod is pivoted on the base, the swing rod is connected with the free end of the swing seat of the tightening wheel, and the distance between the swing seat of the tightening wheel and the tightening plate is adjusted under the driving of the swing rod.

In the tensioning device, the base is provided with an elastic component, the lower end of the elastic component extrudes one side of the tightening wheel swing seat, which is far away from the pivot, the elastic component is limited in a limiting cavity between the side edge of the tightening wheel swing seat and the base, and the tightening wheel swing seat is kept at a pressing position under the pressing action of the elastic component so as to realize the mutual extrusion of the tightening wheel and the tightening plate.

The tensioning wheel lifting mechanism comprises a connecting rod and a switching swing part, wherein the connecting rod is horizontally arranged, the middle part of the switching swing part is pivoted to a tensioning wheel swing seat, one end of the connecting rod is hinged to a swing rod, the other end of the connecting rod is connected with the end part of the switching swing part, the swing rod swings under the action of external force drive and drives the tensioning wheel swing seat to swing upwards to leave a pressing position and reach a loosening position through the connecting rod and the switching swing part; the tightening wheel swing seat automatically returns to the pressing position under the restoring action of the elastic component.

Optionally, the transmission mechanism includes a planetary gear transmission mechanism in transmission connection with the tightening wheel.

Furthermore, in the tightening wheel lifting mechanism, the other end of the switching swing part, which is far away from the connecting rod, is provided with a meshing part matched with the planetary gear transmission mechanism; when the tightening wheel swing seat is lifted to be far away from the pressing position, the swing part is switched to swing to a position where the meshing part is far away from the planetary gear transmission mechanism, the planetary gear transmission mechanism cannot transmit the tightening wheel, and the tightening wheel is static; when the tightening wheel swing seat is located the pressing position, the swing part is switched to swing to the meshing part to be meshed with the planetary gear transmission mechanism, and the planetary gear transmission mechanism transmits the tightening wheel to drive the tightening wheel to work.

Furthermore, the tightening wheel swing seat is provided with an accommodating groove for embedding the first elastic component, one end of the first elastic component is abutted against the inner wall of the accommodating groove, the other end of the first elastic component is abutted against the back of the meshing part, and the meshing part is pressed towards the outer teeth matched with the planetary gear transmission mechanism.

In the tensioning device, a driving gear in transmission connection with the driving mechanism is arranged on the pivot, and the driving gear is externally meshed with the first gear ring on the outermost side of the planetary gear transmission mechanism.

Alternatively, a driving mechanism transmits power to a direction coincident with or parallel to the rotation axis of the driving gear through a corner drive bevel gear provided at the end of the output shaft and a corner driven bevel gear meshed with the corner drive bevel gear; the corner driven bevel gear is directly or indirectly transmitted to the driving gear through other gear transmission of coaxial transmission, so that the corner driven bevel gear is further transmitted to the planetary gear transmission mechanism.

The invention also provides a baler adopting the tension device, which further comprises:

a strap fusing mechanism configured to form a friction-welded connection at an overlapping position of the strap loops by a friction welding element;

a welding state switching mechanism configured to switch the strap welding mechanism between a welding position and a rest position;

the driving mechanism comprises a first driving mechanism and a second driving mechanism, and an output shaft of the first driving mechanism rotates in one direction and is in transmission connection with the tightening wheel through the planetary gear transmission mechanism; the output shaft of the first driving mechanism moves in a second opposite direction to drive the strapping tape welding mechanism to work; the second driving mechanism drives the welding state switching mechanism to work.

Further, the baler is configured to operate in a first mode or a second mode, wherein the baler housing is provided with a first operating element for activating the drive mechanism, and in the first mode, the strap tensioning mechanism, the welding state switching mechanism, and the strap welding mechanism are automatically activated in sequence by operating the first operating element; the baler housing is further provided with a second operating element for actuating the drive mechanism, and in the second mode, the strap tensioning mechanism is actuated by operating the first operating element, and the welding state switching mechanism and the strap welding mechanism are actuated by operating the second operating element.

Furthermore, the packaging machine is also provided with a packaging belt limiting structure, and the packaging belt limiting structure comprises a left inner limiting plate and a right inner limiting plate which are used for limiting the inner side edge of the strapping tape, and a left outer limiting plate and a right outer limiting plate which are used for limiting the outer side edge of the strapping tape;

the left inner limiting plate and the right inner limiting plate are respectively arranged on the left side surface and the right side surface of the base plate of the machine seat, and limiting parts extending upwards of the two limiting plates are close to a straight line where the inner side edges of the tightening plates are located and used for limiting the inner side edges of the strapping tape;

a rocking plate perpendicular to the base plate is arranged at the outer end of the pivot in a linkage manner, the rocking plate is driven by the pivot to synchronously swing up and down when the tightening wheel swing seat swings up and down, the bottom of the right side of the rocking plate is fixedly connected with a right outer limiting plate, the outer side surface of the machine seat frame body is pivoted with a left outer limiting plate, the bottom of the left side of the rocking plate is in linkage connection with the outer end of the left outer limiting plate, and the tightening wheel swing seat drives the connected left outer limiting plate to swing up and down through the rocking plate; the projection of the left outer limiting plate and the right outer limiting plate on the horizontal plane is close to the straight line where the outer side edge of the tightening plate is located, and the two limiting plates after downward swinging limit the outer side edge of the strapping tape.

Preferably, the left side bottom vertical fixation who shakes the board sets up one and inserts the post, sets up on the outer limiting plate in a left side and supplies to insert the arc slot that the post passed, through inserting the cooperation between post and the slot inner wall, tightens up the wheel and pendulum the seat and drive and shake the board to and the outer limiting plate luffing motion in a left side.

The tensioning device for the strapping machine provided by the embodiment of the invention has the following beneficial effects:

1. through the swing arrangement of the swing seat of the tightening wheel, the swing rod indirectly connected with the free end of the swing seat of the tightening wheel is operated, so that the swing seat of the tightening wheel and the tightening wheel arranged on the swing seat of the tightening wheel can be driven to swing up and down, and the tightening wheel swings upwards to be far away from the tightening plate or swings downwards to be close to the tightening plate. Furthermore, the elastic component is arranged above one side of the tightening wheel swing seat far away from the pivot shaft, so that when the swing rod is loosened, the tightening wheel swing seat falls back to the pressing position under the action of elastic restoring force. And the switching swing part rotates for a certain angle under the action of the swing rod, so that the switching swing part is meshed with or far away from a gear ring of the planetary gear transmission mechanism, and the working state of the tightening wheel is switched.

2. Through the cooperation setting of tightening wheel elevating system and strapping tightening mechanism, the elevating movement of tightening wheel is connected with the transmission of tightening wheel and driving motor and is related, greatly simplifies the inner structure of baling press to operating efficiency has been improved. Specifically, the movement of the swing rod in one direction (pressing the swing rod) not only drives the tightening wheel to be lifted away from the tightening plate, but also enables the meshing part of the switching swing part to be away from the planetary gear transmission mechanism, the transmission connection between the driving mechanism and the tightening wheel is cut off, and the tightening wheel is in a non-working state; when the swing rod moves reversely (the swing rod is loosened or reversely lifted), the tightening wheel falls back to the pressing position, the meshing part of the switching swing part is meshed with the gear ring of the planetary gear transmission mechanism, and the tightening wheel rotates under the action of the driving mechanism and tightens the strapping band ring.

Drawings

FIG. 1 is a schematic front view of a portable baler according to one embodiment of the present invention in a non-operating state (with the takeup wheels raised); the outer shell and part of the shielding structure are omitted in the figure;

FIG. 2 is a schematic structural view of the portable baler of the present invention in its operating state; the outer shell and part of the shielding structure are omitted in the figure;

FIG. 3 is an exploded view of the strap tensioning mechanism of the portable strapping machine of the present invention;

FIG. 4 is an exploded view of another perspective of the strap tensioning mechanism of the portable strapping machine of the present invention;

FIG. 5 is a schematic perspective view of the portable baler of the present invention;

FIG. 6 is a schematic structural view of a first state of a lifting mechanism for a take-up pulley in the portable baler of the present invention;

FIG. 7 is a structural diagram of the second state of the lifting mechanism of the take-up pulley in the portable baler of the present invention;

FIG. 8 is a schematic view of the strap fusing mechanism and drive mechanism of the portable strapping machine of the present invention;

FIG. 9 is another schematic view of the strap fusing mechanism and drive mechanism of the strapping machine of the present invention; the fusion cage of fig. 8 is omitted;

FIG. 10 is a further schematic view of the strap fusing mechanism and drive mechanism of the strapping machine of the present invention;

FIG. 11 is a rear view of the welding state switching mechanism according to an embodiment of the present invention;

fig. 12 is a perspective view of the welding state switching mechanism of fig. 11;

fig. 13 is a perspective view of the welding state switching mechanism of fig. 11 from another angle;

FIG. 14 is a front view of a first state of a strapping band limiting structure of the strapping machine of the present invention; state one is a non-operational state defining a strap;

FIG. 15 is a front view of a second state of the packing belt limiting structure of the packing machine of the present invention; the second state is the working state of the binding belt;

FIG. 16 is a side view of a second state of the strapping band limiting structure of the strapping machine of the present invention;

FIG. 17 is a schematic perspective view of the packer in another embodiment;

FIG. 18 is another perspective view of the baler in another embodiment;

FIG. 19 is a schematic right side view of the baler of another embodiment;

FIG. 20 is a schematic view showing a welding state switching mechanism of the wrapping machine in another embodiment; the eccentric wheel is omitted in the drawing;

fig. 21 is a rear view of a welding state switching mechanism in another embodiment; the eccentric wheel is omitted in the drawing;

wherein:

the device comprises a machine base 1, a strapping tape tightening mechanism 2, a tightening wheel 21 and a tightening plate 22;

3, a strapping welding mechanism, a 31 eccentric shaft, a 32 welding frame, a 321 positioning groove, a 33 welding arm, 34 welding upper teeth, 341 limit protrusions, a 342 sliding groove, 343 balls, 35 welding lower teeth, 36 cutters and 37 second elastic components;

4a take-up wheel lifting mechanism, a 40 pivot, a 41 take-up wheel swing seat, a 41a take-up wheel swing seat movable side, a 42 swing rod, a 43 connecting assembly, a 431 connecting rod, a 431a limiting groove hole, a 432 switching swing part, a 432a meshing part, a 44 elastic assembly and a 46 first elastic component;

5 planetary gear train, 5a rotation axis, 61 drive gear, 62 first ring gear, 63 first sun gear, 64 first planet gear, 64a carrier, 65 second ring gear, 66 second sun gear, 67 second planet gear;

7 driving mechanisms, 71 first driving mechanisms, 71a output shaft, 71b corner driving bevel gears, 71c corner driven bevel gears, 71d input shafts, 72 second driving mechanisms, 711 first synchronizing gears, 712 second synchronizing gears and 713 tooth-shaped synchronous belts;

8, a welding state conversion mechanism, an 81 eccentric wheel, an 82 swing bracket, an 83 compression column, a 831 pressure head, an 841 upper roller, a 842 lower roller, an 85 swing arm, an 85a swing arm rotation axis, an 86 compression column buffer structure, an 861 spring, an 871 upper positioning seat and an 872 lower positioning seat; 90 rocker plates, 91 left inner limit plates, 92 right inner limit plates, 93 left outer limit plates, 94 right outer limit plates and 95 adjustable strip-shaped connecting holes; 101 a first travel switch, 102 a second travel switch, 103 a third travel switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used in this specification, the terms "vertical," "horizontal," "left," "right," "up," "down," "inner," "outer," "bottom," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, 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 are therefore not to be considered limiting. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.