Conveying, shearing and shaping structure for paper bag handles

Abstract

The utility model discloses a conveying, shearing and shaping structure for paper bag handles. The conveying, shearing and shaping structure comprises a mounting frame, a feeding mechanism, a cutting mechanism and a transferring mechanism, wherein the feeding mechanism is used for conveying the belt-shaped paper bag handles; the cutting mechanism is used for shearing the belt-shaped paper bag handles into single handles; the feeding mechanism comprises a positioning roller unit and a pressing roller unit. The cutting mechanism comprises a cutter assembly. A shaping unit is further arranged between the positioning roller unit and the cutter assembly. The shaping unit comprises a first rotating roller assembly and a second rotating roller assembly, and strip-shaped paper bag handles are linearly conveyed to the cutter assembly through the first rotating roller assembly and the second rotating roller assembly; the distance between the first roller assembly and the second roller assembly is smaller than or equal to the length of the handle, and the distance between the second roller assembly and the cutter assembly is smaller than or equal to the length of the handle. The shaping unit is arranged between the positioning roller unit and the cutter assembly, so that the problem that the shearing length of a handle cannot be ensured to be consistent due to bending of a paper tape is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of paper bag machines, in particular to a conveying, shearing and shaping structure for paper bag handles. Background Art

[0002] When an automatic paper bag machine produces hand-held paper bags, a braided rope or other cord used as a handle is first bonded to a long strip of paper to form a strip-shaped paper bag handle, then the strip-shaped paper bag handle is cut into individual handles, and finally the individual handles are pasted onto the paper used to make the paper bag.

[0003] Chinese Patent with the authorization announcement number CN111844912B discloses an upper edge processing device for paper bags, including a handle forming mechanism for generating a strip-shaped handle, a handle feeding mechanism for conveying the strip-shaped handle, a handle cutting mechanism for cutting the strip-shaped handle, a single handle transfer mechanism for conveying individual handles, a paper bag upper edge cutting mechanism for making incisions on the upper edge of the paper tape, a handle bonding mechanism for bonding individual handles to the upper edge of the paper bag, a paper bag body cutting mechanism for cutting the paper tape body, and a paper bag upper edge folding and gluing mechanism for folding and gluing the upper edge of the paper tape. Among them, the handle feeding assembly includes a positioning roller unit, a first rotating roller unit, a second rotating roller unit, and a pressing roller unit. The positioning roller unit includes a positioning pin assembly, and the positioning pin assembly can be inserted into the positioning holes of the handle paper tape during the transmission of the handle paper tape. The handle cutting mechanism includes a third rotating roller unit and a cutter assembly; the third rotating roller unit includes a support plate, a mounting frame, a third auxiliary rotating roller, and a support roller. The third auxiliary rotating roller is installed on the mounting frame and is located above the support plate. The third auxiliary rotating roller includes a third auxiliary rotating roller gear part for driving the third auxiliary rotating roller to rotate and a third auxiliary rotating roller conveying part for cooperating with the support roller to convey the handle. Although this patent can ensure the smooth speed of paper bag transmission, the positioning pin assembly can only be positioned when the long strip of paper passes through the positioning roller unit. When the long strip of paper passes through the third rotating roller unit, it will be bent due to the action of the rollers of the positioning roller unit and the third rotating roller unit, affecting the consistency of the length of the strip-shaped paper tape sheared by the handle cutting mechanism. Therefore, this patent has the problem of being unable to ensure the consistency of the handle cutting length. Summary of the Utility Model

[0004] The utility model provides a conveying, shearing and shaping structure for paper bag handles to solve the technical problem that the prior art cannot ensure the consistency of the handle cutting length.

[0005] To achieve the above object, the technical solution of the utility model is as follows:

[0006] A conveying, cutting and shaping structure for a paper bag handle, comprising: a mounting frame, a feeding mechanism for conveying a strip-shaped paper bag handle, a cutting mechanism for cutting the strip-shaped paper bag handle into individual handles, and a transfer mechanism for conveying the handles; the feeding mechanism includes a positioning roller unit and a pressing roller unit, and the cutting mechanism includes a cutter assembly; a shaping unit is further provided between the positioning roller unit and the cutter assembly; the shaping unit includes a first roller assembly and a second roller assembly, and the strip-shaped paper bag handle is conveyed linearly to the cutter assembly by the first roller assembly and the second roller assembly; the distance between the first roller assembly and the second roller assembly is less than or equal to the length of the handle, and the distance between the second roller assembly and the cutter assembly is less than or equal to the length of the handle.

[0007] Further, the first roller assembly includes a first upper roller and a first lower roller, and the first upper roller and the first lower roller rotate oppositely to convey the strip-shaped paper bag handle; the second roller assembly includes a second upper roller and a second lower roller, and the second upper roller and the second lower roller rotate oppositely to convey the strip-shaped paper bag handle.

[0008] Further, a plurality of grooves are axially formed on the outer peripheral surface of the first upper roller, and the arc length of the circular arc surface of the first upper roller between adjacent grooves is equal to the distance between the two straight segments of the handle's handle, and the grooves can accommodate the straight segments of the handle's handle; a plurality of grooves are axially formed on the outer peripheral surface of the second upper roller, and the arc length of the circular arc surface of the second upper roller between adjacent grooves is equal to the distance between the two straight segments of the handle's handle, and the grooves can accommodate the straight segments of the handle's handle.

[0009] Further, the first upper roller and the second upper roller are respectively connected to the mounting frame through a set of adjusting components; the adjusting components include: an L-shaped swinging body, a fixed rotating shaft and a pressing force adjusting component; the fixed rotating shaft is arranged at the corner of the L-shaped swinging body, and the L-shaped swinging body and the mounting frame are rotationally connected through the fixed rotating shaft; one end of the L-shaped swinging body is provided with the pressing force adjusting component, and the other end is provided with the first upper roller or the second upper roller; the pressing force adjusting component can generate a force so that the L-shaped swinging body has a tendency to reset.

[0010] Further, the pressing force adjusting component includes: a positioning block and a damping component; the positioning block is fixedly arranged on the mounting frame; the damping component is connected to the L-shaped swinging body. When the L-shaped swinging body rotates, the L-shaped swinging body and the positioning block move away from each other, and the L-shaped swinging body can drive the first upper roller or the second upper roller to lift, and the damping component generates a force so that the L-shaped swinging body has a tendency to reset; when the L-shaped swinging body resets, the positioning block restricts the rotation of the L-shaped swinging body, and the L-shaped swinging body drives the first upper roller or the second upper roller to fall.

[0011] Further, the damping member includes: a first fixing pin, a second fixing pin and a spring; the first fixing pin is fixed on the L-shaped swinging body, and the axis of the first fixing pin and the axis of the fixed rotating shaft are parallel in the longitudinal direction; the second fixing pin is fixed on the mounting bracket, and the axes of the first fixing pin, the second fixing pin and the axis of the fixed rotating shaft are arranged in a triangle; the spring is arranged between the first fixing pin and the second fixing pin, and when the L-shaped swinging body rotates, the L-shaped swinging body causes elastic deformation of the spring.

[0012] Further, a spacing adjustment assembly is further provided on the L-shaped swinging body. The spacing adjustment assembly includes a bolt and a nut detachably connected to the L-shaped swinging body. The head of the bolt penetrates through the L-shaped swinging body along the tangent direction of the swing of the L-shaped swinging body and extends to the positioning block. The nut is located between the L-shaped swinging body and the positioning block, and the nut is threadedly connected to the bolt. By screwing the bolt, the L-shaped swinging body can be driven to swing.

[0013] Further, the transfer mechanism includes an upper transfer mechanism and a lower transfer mechanism.

[0014] The upper transfer mechanism includes: a third upper roller, a fourth upper roller, a first upper tensioning roller, a second upper tensioning roller and an upper belt. The axes of the third upper roller, the first upper tensioning roller and the second upper tensioning roller are arranged in a triangle. The upper belt is wound around the third upper roller, the first upper tensioning roller and the second upper tensioning roller. The fourth upper roller is located between the third upper roller and the first upper tensioning roller and within the area surrounded by the upper belt, and the fourth upper roller is tangent to the upper belt between the third upper roller and the first upper tensioning roller.

[0015] The lower transfer mechanism includes: a third lower roller, a fourth lower roller, a first lower tensioning roller, a second lower tensioning roller and a lower belt. The axes of the third lower roller, the first lower tensioning roller and the second lower tensioning roller are arranged in a triangle. The lower belt is wound around the third lower roller, the first lower tensioning roller and the second lower tensioning roller. The fourth lower roller is located between the third lower roller and the first lower tensioning roller and within the area surrounded by the lower belt, and the fourth lower roller is tangent to the lower belt between the third lower roller and the first lower tensioning roller.

[0016] A conveying channel for the handle is formed between the upper belt and the lower belt.

[0017] Further, the third upper roller and the fourth upper roller are respectively connected to the mounting bracket through a set of adjustment components; the adjustment components include: an L-shaped swinging body, a fixed rotating shaft and a pressing force adjustment component; the fixed rotating shaft is arranged at the corner of the L-shaped swinging body, and the L-shaped swinging body and the mounting bracket are rotationally connected through the fixed rotating shaft; one end of the L-shaped swinging body is provided with the pressing force adjustment component, and the other end is provided with the third upper roller or the fourth upper roller; the pressing force adjustment component can generate a force to make the L-shaped swinging body have a tendency to reset.

[0018] Further, the first upper tensioning roller is connected to the mounting rack through the first upper mounting assembly, and the second upper tensioning roller is connected to the mounting rack through the second upper mounting assembly.

[0019] The first mounting assembly includes: a bracket, a mounting seat, a mounting rod and a first set screw; the bracket is fixedly arranged on the mounting rack; the mounting seat is fixedly arranged on the bracket; the mounting rod is slidably connected to the mounting seat in the vertical plane, and the mounting rod is rotatably connected to the first upper tensioning roller; a first set screw threaded hole is provided on the mounting seat, and the first set screw is screwed into the first set screw threaded hole to lock the mounting rod to the mounting seat.

[0020] The second upper mounting assembly includes: a mounting post, a shaft fixing clip and a first fixing screw; the mounting post is fixedly arranged on the mounting rack and is parallel to the axis of the second upper tensioning roller; the first fixing screw fixes one end of the shaft fixing clip on the mounting post, and the second upper tensioning roller is rotatably connected to the other end of the shaft fixing clip.

[0021] Beneficial effects:

[0022] In a conveying, shearing and shaping structure for a paper bag handle disclosed in the present application, a shaping unit is arranged between the positioning roller unit and the cutter assembly. The first roller assembly and the second roller assembly of the shaping unit convey the strip-shaped paper bag handle to the cutter assembly along a straight line; by setting the distance between the first roller assembly and the second roller assembly to be less than or equal to the length of the handle, two stress points are provided within one handle length of the paper bag handle, preventing the paper bag handle from curling; by setting the distance between the second roller assembly and the cutter assembly to be less than or equal to the length of the handle, after the paper bag handle is conveyed to the cutter assembly for shearing, there is no stress point within one handle length of the paper bag handle; the problem that the shearing length of the handle cannot be guaranteed to be consistent due to the bending of the paper strip is solved. Description of the drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic structural view of a strip-shaped paper bag handle;

[0025] Figure 2 It is a schematic structural view of a conveying, shearing and shaping structure for a paper bag handle disclosed in the present invention;

[0026] Figure 3 It is a front view of a conveying, shearing and shaping structure for a paper bag handle disclosed in the present invention.

[0027] 1. Mounting frame; 11. First supporting plate; 12. Second supporting plate;

[0028] 2. Feeding mechanism; 21. Positioning roller unit; 22. Pressing roller unit;

[0029] 3. Cutting mechanism;

[0030] 41. First upper rotating roller; 42. First lower rotating roller;

[0031] 51. Second upper rotating roller; 52. Second lower rotating roller;

[0032] 611. Third upper rotating roller; 612. Fourth upper rotating roller; 613. First upper tensioning roller; 614. Second upper tensioning roller; 615. Upper belt; 621. Third lower rotating roller; 622. Fourth lower rotating roller; 623. First lower tensioning roller; 631. Bracket; 632. Mounting seat; 633. Mounting rod; 634. First set screw; 641. Mounting column; 642. Optical axis fixing clip;

[0033] 7. Groove;

[0034] 81. L-shaped swinging body; 82. Fixed rotating shaft; 831. Positioning block; 832. Damping component; 8321. First fixing pin; 8322. Second fixing pin; 8323. Spring; 833. Spacing adjusting component; 8331. Bolt; 8332. Nut;

[0035] 9. Handle; 91. Long strip of paper tape; 92. Handle grip. Detailed implementation manner

[0036] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0037] As Figure 1 shown, the belt-shaped paper bag handle is formed by connecting a number of handles 9 end to end in sequence. The handle 9 includes a long strip of paper tape 91 and a handle grip 92. The handle grip 92 is a "U" - shaped structure formed by a braided rope or other cord-like object. The handle grip 92 includes two straight line segments and an arc segment connecting the two straight line segments.

[0038] A transmission, cutting and shaping structure for a paper bag handle, in combination with Figure 1 , Figure 2 and Figure 3As shown in the figure, it includes: a mounting bracket 1, a feeding mechanism 2 for conveying strip-shaped paper bag handles, a cutting mechanism 3 for cutting the strip-shaped paper bag handles into individual handles 9, and a transfer mechanism for conveying the handles 9; the feeding mechanism 2 includes a positioning roller unit 21 and a pressing roller unit 22, and the cutting mechanism 3 includes a cutter assembly; a shaping unit is further provided between the positioning roller unit 21 and the cutter assembly; the shaping unit includes a first roller assembly and a second roller assembly, and the strip-shaped paper bag handles are conveyed in a straight line to the cutter assembly by the first roller assembly and the second roller assembly; the distance between the first roller assembly and the second roller assembly is less than or equal to the length of the handle 9, and the distance between the second roller assembly and the cutter assembly is less than or equal to the length of the handle 9. By arranging the shaping unit between the positioning roller unit 21 and the cutter assembly, the strip-shaped paper bag handles are shaped after passing through the positioning roller unit 21 and the pressing roller unit 22 of the feeding mechanism 2, eliminating the bending caused by the strip-shaped paper bag handles being conveyed around the positioning roller unit 21. The strip-shaped paper bag handles pass through the first roller assembly first and then through the second roller assembly. The first roller assembly and the second roller assembly convey the strip-shaped paper bag handles in a straight line to the cutter assembly, which can shape the paper bag handles 9 to avoid bending of the strip-shaped paper bag handles. By setting the distance between the first roller assembly and the second roller assembly to be less than or equal to the length of the handle 9, the strip-shaped paper bag handles always have two stress points within the length of one handle 9, realizing the pressing of two places of the strip-shaped paper bag handles and avoiding bending of the strip-shaped paper bag handles. By setting the distance between the second roller assembly and the cutter assembly to be less than or equal to the length of the handle 9, it is avoided that the next handle 9 to be cut has no stress point and causes it to bend and curl from the end. In summary, this conveying, cutting and shaping structure solves the problem that the cutting length of the handle 9 cannot be guaranteed due to the bending of the paper tape.

[0039] Preferably, the first roller assembly includes a first upper roller 41 and a first lower roller 42, and the first upper roller 41 and the first lower roller 42 rotate in opposite directions to convey the strip-shaped paper bag handles; the first upper roller 41 and the first lower roller 42 drive the strip-shaped paper bag handles to move from the upper and lower sides through friction; and the bending tendencies of the first upper roller 41 and the first lower roller 42 on the strip-shaped paper bag handles are opposite to each other to achieve cancellation, avoiding the bending of the strip-shaped paper bag handles. The second roller assembly includes a second upper roller 51 and a second lower roller 52, and the second upper roller 51 and the second lower roller 52 rotate in opposite directions to convey the strip-shaped paper bag handles; the second upper roller 51 and the second lower roller 52 drive the strip-shaped paper bag handles to move from the upper and lower sides through friction; and the bending tendencies of the second upper roller 51 and the second lower roller 52 on the strip-shaped paper bag handles are opposite to each other to achieve cancellation, avoiding the bending of the strip-shaped paper bag handles.

[0040] Preferably, a plurality of grooves 7 are axially formed on the outer peripheral surface of the first upper roller 41. In this embodiment, there are three grooves 7 and the bottom of the groove is arc-shaped. The arc length of the arc surface of the first upper roller 41 between adjacent grooves 7 is equal to the distance between the two straight segments of the handle 92 of the handle 9, and the groove 7 can accommodate the straight segment of the handle 92 of the handle 9; a plurality of grooves 7 are axially formed on the outer peripheral surface of the second upper roller 51. The arc length of the arc surface of the second upper roller 51 between adjacent grooves 7 is equal to the distance between the two straight segments of the handle 92 of the handle 9, and the groove 7 can accommodate the straight segment of the handle 92 of the handle 9. The groove 7 enables the first upper roller 41 and the second upper roller 51 to avoid the straight segment of the handle 92 during the rotation process, preventing the first upper roller 41 and the second upper roller 51 from directly pressing on the straight segment of the handle 92 and causing the first upper roller 41 and the second upper roller 51 to separate from the strip-shaped paper tape 91.

[0041] Preferably, the first upper roller 41 and the second upper roller 51 are respectively connected to the mounting frame 1 through a set of adjusting components; the adjusting components include: an L-shaped swing body 81, a fixed rotating shaft 82 and a pressing force adjusting component; the fixed rotating shaft 82 is arranged at the corner of the L-shaped swing body 81, and the L-shaped swing body 81 and the mounting frame 1 are rotationally connected through the fixed rotating shaft 82; one end of the L-shaped swing body 81 is provided with a pressing force adjusting component, and the other end is provided with the first upper roller 41 or the second upper roller 51; the pressing force adjusting component can generate a force to make the L-shaped swing body 81 have a tendency to reset. When the thickness of the strip-shaped paper tape 91 changes or the straight segment of the handle 92 does not enter the groove 7 due to an error, the handle 9 lifts the L-shaped swing body 81 to change the distance between the first upper roller 41 and the first lower roller 42, and the second upper roller 51 and the second lower roller 52, so that the handle 9 can pass smoothly. After passing, the pressing force adjusting component makes the L-shaped swing body 81 reset.

[0042] Specifically, the first upper roller 41 includes a first roller and a first rotating shaft. A bearing is installed between the first roller and the first rotating shaft. The first rotating shaft is fixed on the L-shaped swing body 81 and its axis is parallel to the fixed rotating shaft 82 to realize the connection between the first upper roller 41 and the adjusting component. The second upper roller 51 includes a second roller and a second rotating shaft. A bearing is installed between the second roller and the second rotating shaft. The second rotating shaft is fixed on the L-shaped swing body 81 and its axis is parallel to the fixed rotating shaft 82 to realize the connection between the second upper roller 51 and the adjusting component.

[0043] Specifically, a first supporting plate 11 is further provided between the first upper rotating roller 41 and the second upper rotating roller 51. The first supporting plate 11 is located between the first upper rotating roller 41 and the first lower rotating roller 42 in the vertical direction. The first supporting plate 11 is used to support the strip-shaped paper bag handle 9 located between the first upper rotating roller 41 and the second upper rotating roller 51. A second supporting plate 12 is further provided on the side of the first supporting plate 11 away from the mounting frame 1. The second supporting plate 12 is flush with the first supporting plate 11. Along the conveying direction of the handle 9, the second supporting plate 12 extends from the first upper rotating roller 41 to the transfer mechanism. The second supporting plate 12 is used to support the handle 92 to prevent the handle 92 from sagging.

[0044] Preferably, the pressing force adjusting member includes: a positioning block 831 and a damping member 832; the positioning block 831 is fixedly provided on the mounting frame 1; the damping member 832 is connected to the L-shaped swinging body 81. When the L-shaped swinging body 81 rotates, the L-shaped swinging body 81 and the positioning block 831 move away from each other. The L-shaped swinging body 81 can drive the first upper rotating roller 41 or the second upper rotating roller 51 to lift. The damping member 832 generates a force to make the L-shaped swinging body 81 tend to reset; when the L-shaped swinging body 81 resets, the positioning block 831 restricts the rotation of the L-shaped swinging body 81, and the L-shaped swinging body 81 drives the first upper rotating roller 41 or the second upper rotating roller 51 to fall.

[0045] Preferably, the damping member 832 includes: a first fixing pin 8321, a second fixing pin 8322 and a spring 8323; the first fixing pin 8321 is fixedly provided on the L-shaped swinging body 81, and the axis of the first fixing pin 8321 is parallel to the axis of the fixed rotating shaft 82 in the longitudinal direction; the second fixing pin 8322 is fixedly provided on the mounting frame 1, and the axes of the first fixing pin 8321, the second fixing pin 8322 and the axis of the fixed rotating shaft 82 are arranged in a triangle; the spring 8323 is arranged between the first fixing pin 8321 and the second fixing pin 8322. When the L-shaped swinging body 81 rotates, the L-shaped swinging body 81 causes the spring 8323 to produce elastic deformation.

[0046] Specifically, the spring 8323 is a tension spring. The first fixing pin 8321 is fixedly provided at the end of the vertical section of the L-shaped swinging body 81, and the axis of the first fixing pin 8321 is vertically parallel to the axis of the fixed rotating shaft 82; the second fixing pin 8322 is fixedly provided on the mounting frame 1. The second fixing pin 8322 is located on the left side of the vertical section of the L-shaped swinging body 81 and above the horizontal section. The axis of the second fixing pin 8322 is parallel to the axis of the first fixing pin 8321; the two ends of the spring 8323 are respectively hooked to the ends of the first fixing pin 8321 and the second fixing pin 8322. The positioning block 831 is fixedly provided on the mounting frame 1, and the positioning block 831 is located between the first fixing pin 8321 and the second fixing pin 8322.

[0047] Preferably, a spacing adjustment assembly 833 is further provided on the L-shaped swing body 81. The spacing adjustment assembly 833 includes a bolt 8331 and a nut 8332 detachably connected to the L-shaped swing body 81. The head of the bolt 8331 penetrates through the L-shaped swing body 81 along the tangent direction of the swing of the L-shaped swing body 81 and then extends to the positioning block 831. The nut 8332 is located between the L-shaped swing body 81 and the positioning block 831. The nut 8332 and the bolt 8331 are threadedly connected. By screwing the bolt 8331, the L-shaped swing body 81 can be driven to swing.

[0048] Specifically, along the tangent direction of the swing of the L-shaped swing body 81, a threaded hole is provided at the end of the vertical section of the L-shaped swing body 81. The head of the bolt 8331 penetrates through the threaded hole on the L-shaped swing body 81 and then extends to the side of the positioning block 831. The nut 8332 is arranged between the positioning block 831 and the L-shaped swing body 81. The nut 8332 and the bolt 8331 are threadedly connected. The nut 8332 can lock the bolt 8331 and the L-shaped swing body 81. Loosen the nut 8332, turn the bolt 8331, adjust the length of the thread of the bolt 8331 between the positioning block 831 and the L-shaped swing body 81. The bolt 8331 drives the L-shaped swing body 81 to swing, and the L-shaped swing body 81 drives the first upper roller 41 or the second upper roller 51 to move, so as to change the distance between the first upper roller 41 and the first lower roller 42, and between the second upper roller 51 and the second lower roller 52.

[0049] When the handle 9 rotates the L-shaped swing body 81, the L-shaped swing body 81 can drive the first upper roller 41 or the second upper roller 51 to lift. The head of the bolt 8331 and the positioning block 831 move away from each other, and the axial distance between the first fixing pin 8321 and the second fixing pin 8322 increases, causing the spring 8323 to stretch and generate a pulling force. The pulling force acts on the first fixing pin 8321, making the L-shaped swing body 81 tend to reset. When the handle 9 passes by, the pulling force of the spring 8323 causes the L-shaped swing body 81 to rotate and drive the first upper roller 41 or the second upper roller 51 to fall, so that the head of the bolt 8331 abuts against the positioning block 831 again.

[0050] Preferably, the transfer mechanism includes an upper transfer mechanism and a lower transfer mechanism.

[0051] The upper transfer mechanism includes: a third upper roller 611, a fourth upper roller 612, a first upper tension roller 613, a second upper tension roller 614 and an upper belt 615. The axes of the third upper roller 611, the first upper tension roller 613 and the second upper tension roller 614 are arranged in a triangle. The upper belt 615 is wound around the third upper roller 611, the first upper tension roller 613 and the second upper tension roller 614. The fourth upper roller 612 is located between the third upper roller 611 and the first upper tension roller 613 and within the area surrounded by the upper belt 615. The fourth upper roller 612 is tangent to the upper belt 615 between the third upper roller 611 and the first upper tension roller 613, so that the upper belt 615 between the third upper roller 611 and the first upper tension roller 613 remains straight. The fourth upper roller 612 applies pressure to the upper belt 615 between the third upper roller 611 and the first upper tension roller 613.

[0052] The lower transfer mechanism includes: a third lower roller 621, a fourth lower roller 622, a first lower tension roller 623, a second lower tension roller and a lower belt. The axes of the third lower roller 621, the first lower tension roller 623 and the second lower tension roller are arranged in a triangle. The lower belt is wound around the third lower roller 621, the first lower tension roller 623 and the second lower tension roller. The fourth lower roller 622 is located between the third lower roller 621 and the first lower tension roller 623 and within the area surrounded by the lower belt. The fourth lower roller 622 is tangent to the lower belt between the third lower roller 621 and the first lower tension roller 623, so that the lower belt between the third lower roller 621 and the first lower tension roller 623 remains straight. The fourth lower roller 622 applies pressure to the lower belt between the third lower roller 621 and the first lower tension roller 623.

[0053] A conveying channel for the handle 9 is formed between the upper belt 615 and the lower belt, which is used to convey the cut single handle 9. Under the action of the upper belt 615 and the lower belt, the handle 9 is further shaped to avoid bending in subsequent processes.

[0054] Preferably, the third upper roller 611 and the fourth upper roller 612 are respectively connected to the mounting frame 1 through a set of adjusting components to realize the adjustment of the third upper roller 611 and the fourth upper roller 612. The third upper roller 611 includes a third roller and a third rotating shaft, and the third roller is rotatably connected to the third rotating shaft; the fourth upper roller 612 includes a fourth roller and a fourth rotating shaft, and the fourth roller is rotatably connected to the fourth rotating shaft; the third rotating shaft and the fourth rotating shaft are respectively connected to the L-shaped swing body 81 of the corresponding adjusting component.

[0055] Preferably, the first upper tension roller 613 is connected to the mounting frame 1 through a first upper mounting component, and the second upper tension roller 614 is connected to the mounting frame 1 through a second upper mounting component.

[0056] The first mounting assembly includes: a bracket 631, a mounting base 632, a mounting rod 633, and a first set screw 634; the bracket 631 is fixedly provided on the mounting frame 1; the mounting base 632 is fixedly provided on the bracket 631; the mounting rod 633 is slidably connected to the mounting base 632 in the vertical plane, and the mounting rod 633 is rotatably connected to the first upper tension roller 613; a first set screw thread hole is provided on the mounting base 632, and the first set screw 634 is screwed into the first set screw thread hole to lock the mounting rod 633 to the mounting base 632. Loosen the first set screw 634 to adjust the position of the mounting rod 633 relative to the mounting base 632, so as to realize the adjustment of the position of the first upper tension roller 613; after the first set screw 634 is screwed in, it abuts against the mounting rod 633 to fix the position of the first upper tension roller 613.

[0057] The second upper mounting assembly includes: a mounting post 641, a shaft fixing clip 642, and a first fixing screw; the mounting post 641 is fixedly provided on the mounting frame 1 and is parallel to the axis of the second upper tension roller 614; the first fixing screw fixes one end of the shaft fixing clip 642 on the mounting post 641, and the second upper tension roller 614 is rotatably connected to the other end of the shaft fixing clip 642. Tighten the first fixing screw on the shaft fixing clip 642 so that the shaft fixing clip 642 clamps the mounting post 641 to be fixed.

[0058] Specifically, the bracket 631 of the first mounting assembly includes a first bracket plate, a second bracket plate, and a screw. The first bracket plate is perpendicular to the mounting frame 1. The second bracket plate is located at the end of the first bracket plate away from the mounting frame 1, and the second bracket plate is parallel to the mounting frame 1. The screw passes through the second bracket plate and the first bracket plate and then is screwed into the mounting frame 1. The mounting rod 633 is located between the second bracket plate and the mounting frame 1. The mounting base 632 passes through from the side of the second bracket plate away from the mounting frame 1. The first set screw 634 is screwed into the mounting base 632 from the end of the mounting base 632 away from the mounting frame 1, which is convenient for the operator to operate the first set screw 634.

[0059] Specifically, the first lower tension roller 623 is connected to the mounting frame 1 through a first lower mounting assembly, and the first lower mounting assembly is the same as the first upper mounting assembly, so details are not described herein again. The second lower tension roller is connected to the mounting frame 1 through a second lower mounting assembly, and the second lower mounting assembly is the same as the second upper mounting assembly, so details are not described herein again.

[0060] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A conveying, shearing and shaping structure for a paper bag handle, comprising: An installation frame (1), a feeding mechanism (2) for conveying the strip-shaped paper bag handles, a cutting mechanism (3) for cutting the strip-shaped paper bag handles into individual handles (9), and a transfer mechanism for conveying the handles (9); the feeding mechanism (2) includes a positioning roller unit (21) and a pressing roller unit (22), and the cutting mechanism (3) includes a cutter assembly; characterized in that a shaping unit is further provided between the positioning roller unit (21) and the cutter assembly; The shaping unit includes a first roller assembly and a second roller assembly, and the strip-shaped paper bag handles are conveyed linearly to the cutter assembly by the first roller assembly and the second roller assembly; the distance between the first roller assembly and the second roller assembly is less than or equal to the length of the handle (9), and the distance between the second roller assembly and the cutter assembly is less than or equal to the length of the handle (9).

2. The transfer, cutting and shaping structure for a paper bag handle according to claim 1, wherein, The first roller assembly includes a first upper roller (41) and a first lower roller (42), and the first upper roller (41) and the first lower roller (42) rotate oppositely to convey the strip-shaped paper bag handles; the second roller assembly includes a second upper roller (51) and a second lower roller (52), and the second upper roller (51) and the second lower roller (52) rotate oppositely to convey the strip-shaped paper bag handles.

3. The transfer, cutting and shaping structure for a paper bag handle according to claim 2, wherein A plurality of grooves (7) are axially formed on the outer peripheral surface of the first upper roller (41), and the arc length of the arc surface of the first upper roller (41) between adjacent grooves (7) is equal to the distance between the two straight segments of the handle (92) of the handle (9), and the grooves (7) can accommodate the straight segments of the handle (92) of the handle (9). A plurality of grooves (7) are axially formed on the outer peripheral surface of the second upper roller (51), and the arc length of the arc surface of the second upper roller (51) between adjacent grooves (7) is equal to the distance between the two straight segments of the handle (92) of the handle (9), and the grooves (7) can accommodate the straight segments of the handle (92) of the handle (9).

4. A transfer, shearing and shaping structure for a paper bag handle according to claim 2, characterized in that, The first upper roller (41) and the second upper roller (51) are respectively connected to the installation frame (1) through a set of adjusting components; The adjusting component includes: an L-shaped swing body (81), a fixed rotating shaft (82) and a pressing force adjusting component; the fixed rotating shaft (82) is arranged at the corner of the L-shaped swing body (81), and the L-shaped swing body (81) and the installation frame (1) are rotationally connected through the fixed rotating shaft (82); one end of the L-shaped swing body (81) is provided with the pressing force adjusting component, and the other end is provided with the first upper roller (41) or the second upper roller (51); the pressing force adjusting component can generate an acting force to make the L-shaped swing body (81) have a tendency to reset.

5. A conveying, shearing and shaping structure for a paper bag handle according to claim 4, characterized in that, The pressing force adjusting member includes: a positioning block (831) and a damping member (832); the positioning block (831) is fixedly provided on the mounting frame (1); the damping member (832) is connected to the L-shaped swing body (81). When the L-shaped swing body (81) rotates, the L-shaped swing body (81) and the positioning block (831) move away from each other. The L-shaped swing body (81) can drive the first upper roller (41) or the second upper roller (51) to lift, and the damping member (832) generates a force to make the L-shaped swing body (81) tend to reset; after the L-shaped swing body (81) resets, the positioning block (831) restricts the rotation of the L-shaped swing body (81), and the L-shaped swing body (81) drives the first upper roller (41) or the second upper roller (51) to fall.

6. The transfer, shearing and shaping structure for a paper bag handle according to claim 5, characterized in that, The damping member (832) includes: a first fixing pin (8321), a second fixing pin (8322) and a spring (8323); The first fixing pin (8321) is fixedly provided on the L-shaped swing body (81), and the axis of the first fixing pin (8321) is parallel to the axis of the fixed rotation shaft (82) in the longitudinal direction; The second fixing pin (8322) is fixedly provided on the mounting frame (1), and the axes of the first fixing pin (8321), the second fixing pin (8322) and the axis of the fixed rotation shaft (82) are arranged in a triangle; The spring (8323) is arranged between the first fixing pin (8321) and the second fixing pin (8322). When the L-shaped swing body (81) rotates, the L-shaped swing body (81) causes the spring (8323) to generate elastic deformation.

7. A transfer, shearing and shaping structure for a paper bag handle according to claim 6, characterized in that, A spacing adjusting assembly (833) is further provided on the L-shaped swing body (81). The spacing adjusting assembly (833) includes a bolt (8331) and a nut (8332) detachably connected to the L-shaped swing body (81). The head of the bolt (8331) penetrates through the L-shaped swing body (81) along the tangent direction of the swing of the L-shaped swing body (81) and then extends to the positioning block (831). The nut (8332) is located between the L-shaped swing body (81) and the positioning block (831), and the nut (8332) is threadedly connected to the bolt (8331). By screwing the bolt (8331), the L-shaped swing body (81) can be driven to swing.

8. A conveying, shearing and shaping structure for a paper bag handle according to claim 1, characterized in that, The transfer mechanism includes an upper transfer mechanism and a lower transfer mechanism; The upper transfer mechanism includes: a third upper roller (611), a fourth upper roller (612), a first upper tension roller (613), a second upper tension roller (614) and an upper belt (615). The axes of the third upper roller (611), the first upper tension roller (613) and the second upper tension roller (614) are arranged in a triangle. The upper belt (615) is wound around the third upper roller (611), the first upper tension roller (613) and the second upper tension roller (614). The fourth upper roller (612) is located between the third upper roller (611) and the first upper tension roller (613) and within the area enclosed by the upper belt (615). The fourth upper roller (612) is tangent to the upper belt (615) between the third upper roller (611) and the first upper tension roller (613). The lower transfer mechanism includes: a third lower roller (621), a fourth lower roller (622), a first lower tension roller (623), a second lower tension roller and a lower belt. The axes of the third lower roller (621), the first lower tension roller (623) and the second lower tension roller are arranged in a triangle. The lower belt is wound around the third lower roller (621), the first lower tension roller (623) and the second lower tension roller. The fourth lower roller (622) is located between the third lower roller (621) and the first lower tension roller (623) and within the area enclosed by the lower belt. The fourth lower roller (622) is tangent to the lower belt between the third lower roller (621) and the first lower tension roller (623). A conveying channel for the handle (9) is formed between the upper belt (615) and the lower belt.

9. A conveying, shearing and shaping structure for a paper bag handle according to claim 8, characterized in that, The third upper roller (611) and the fourth upper roller (612) are respectively connected to the mounting frame (1) through a set of adjusting components. The adjusting component includes: an L-shaped swinging body (81), a fixed rotating shaft (82) and a pressing force adjusting component. The fixed rotating shaft (82) is arranged at the corner of the L-shaped swinging body (81), and the L-shaped swinging body (81) and the mounting frame (1) are rotationally connected through the fixed rotating shaft (82). One end of the L-shaped swinging body (81) is provided with the pressing force adjusting component, and the other end is provided with the third upper roller (611) or the fourth upper roller (612). The pressing force adjusting component can generate a force to make the L-shaped swinging body (81) tend to reset.

10. A conveying, shearing and shaping structure for a paper bag handle according to claim 8, characterized in that, The first upper tension roller (613) is connected to the mounting frame (1) through a first upper mounting component, and the second upper tension roller (614) is connected to the mounting frame (1) through a second upper mounting component. The first mounting assembly includes: a bracket (631), a mounting base (632), a mounting rod (633), and a first set screw (634); the bracket (631) is fixedly provided on the mounting frame (1); the mounting base (632) is fixedly provided on the bracket (631); the mounting rod (633) is slidably connected to the mounting base (632) in a vertical plane, and the mounting rod (633) is rotatably connected to the first upper tension roller (613); a first set screw thread hole is provided on the mounting base (632), and the first set screw (634) is screwed into the first set screw thread hole to lock the mounting rod (633) to the mounting base (632); The second upper mounting assembly includes: a mounting post (641), a shaft fixing clamp (642), and a first fixing screw; the mounting post (641) is fixedly provided on the mounting frame (1) and is parallel to the axis of the second upper tension roller (614); the first fixing screw fixes one end of the shaft fixing clamp (642) on the mounting post (641), and the second upper tension roller (614) is rotatably connected to the other end of the shaft fixing clamp (642).

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