Small paper pasting device and paper bag forming device

Abstract

The purpose of the present invention is to disclose a device for pasting small pieces of paper and a device for forming paper bags, comprising a side plate, a sticker roller and a clutch assembly; the sticker roller comprises an end plate and a first arc plate and a second arc plate which are symmetrically arranged; a first inclined surface and a first clamping finger are arranged at the first end, the first clamping finger is fixed to the first rotating shaft, and the first rotating shaft is rotatably arranged on the end plate; a second inclined surface and a second clamping finger are arranged at the third end, the second clamping finger is fixed to the second rotating shaft, and the second rotating shaft is rotatably arranged on the end plate; technical effect: after the first piece of small paper is clamped by the first clamping finger, the sticker roller first contacts the gluing roller through rotation to coat the surface of the first piece of small paper with glue, and at this time, the second clamping finger clamps the second piece of small paper; the sticker roller continues to rotate to paste the first piece of small paper on the paper bag roller, and at this time, the first clamping finger opens, and the sticker roller continues to rotate to clamp the next piece of small paper through the first clamping finger, and this cycle is repeated to achieve paper clamping, gluing and pasting of small papers.

Description

Technical Field

[0001] The invention relates to the technical field of paper bag forming, in particular to a small paper pasting device and a paper bag forming device. Background Art

[0002] A paper bag with a handle usually has the handle and the bag body bonded together by a small piece of paper. When making such a paper bag, the small piece of paper needs to be passed to an automated bag-forming device in order to glue the small piece of paper and stick it on a paper bag product or semi-finished product. Currently, the small piece of paper sticking device has the following defects: a complex structure leads to low efficiency in sticking the small piece of paper, which affects the overall efficiency of forming the paper bag; or the small piece of paper is manually stuck, resulting in low efficiency in forming the paper bag; after the small piece of paper is glued, when the surface of the small piece of paper is stuck to the handle, the handle is higher than the surface of the bag body, so that the small piece of paper cannot be stuck to the edge of the handle, resulting in the handle not being firmly stuck and the handle easily falling off.

[0003] In view of this, there is an urgent need to develop a paper pasting device and a paper bag forming device with a simple structure and high efficiency to overcome the above-mentioned defects. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to disclose a small paper pasting device and a paper bag forming device, through the cooperation of the cam and the clutch assembly, the clamping fingers can clamp or loosen the paper in time and transmit the small paper to the accurate gluing and pasting position.

[0005] The first object of the present invention is to provide a device for sticking small pieces of paper.

[0006] A second object of the present invention is to provide a paper bag forming device.

[0007] To achieve the above first invention objective, the present invention provides a small paper pasting device, comprising a side plate, a paper pasting roller and a clutch assembly;

[0008] The sticker roller comprises an end plate and a first arc plate and a second arc plate which are symmetrically arranged, wherein the first arc plate comprises a first end and a second end, and the second arc plate comprises a third end and a fourth end, and the first end and the third end are arranged diagonally;

[0009] A first inclined surface and a first clamping finger are provided at the first end, the first clamping finger is fixed to a first rotating shaft, and the first rotating shaft is rotatably provided on the end plate;

[0010] A second inclined surface and a second clamping finger are provided at the third end, the second clamping finger is fixed to a second rotating shaft, and the second rotating shaft is rotatably provided on the end plate;

[0011] The clutch assembly comprises a cam, a first clutch block, a second clutch block, a first tension spring and a second tension spring, and the cam is fixed to the side plate;

[0012] The first clutch block is fixed to the first rotating shaft, a first roller is arranged on a first side of the first clutch block, a first pull rod is arranged on a second side of the first clutch block, the first pull rod passes through a first circular hole of the end plate, one end of the first tension spring is connected to the first pull rod, and the other end of the first tension spring is connected to the end plate;

[0013] The second clutch block is fixed to the second rotating shaft, a second roller is arranged on the third side of the second clutch block, a second pull rod is arranged on the fourth side of the second clutch block, the second pull rod passes through the second circular hole of the end plate, one end of the second tension spring is connected to the second pull rod, and the other end of the second tension spring is connected to the end plate.

[0014] Preferably, the first clutch block and the second clutch block are both L-shaped.

[0015] Preferably, the first rotating shaft is provided with a plurality of first retaining rings, and the second rotating shaft is provided with a plurality of second retaining rings.

[0016] Preferably, the surface of the first arc plate is provided with a first arc groove and a second arc groove which are parallel and symmetrical to each other, a first spring and a corresponding first arc block are provided in the first arc groove, and a first spring and a corresponding first arc block are provided in the second arc groove;

[0017] When the small paper on the surface of the first curved plate is not subjected to pressure, the surface of the first curved block is in the same plane as the surface of the first curved plate under the action of the first spring;

[0018] When the small paper on the surface of the first arc-shaped plate is subjected to pressure, the first spring is compressed to make the surface of the first arc-shaped block lower than the surface of the first arc-shaped plate.

[0019] Preferably, a third arc groove and a fourth arc groove which are parallel and symmetrically arranged to each other are arranged on the surface of the second arc plate, a second spring and a corresponding second arc block are arranged in the third arc groove, and a second spring and a corresponding second arc block are arranged in the fourth arc groove;

[0020] When the small paper on the surface of the second curved plate is not subjected to pressure, the surface of the second curved block is in the same plane as the surface of the second curved plate under the action of the second spring;

[0021] When the small paper on the surface of the second arc-shaped block is subjected to pressure, the second spring is compressed to make the surface of the second arc-shaped block lower than the surface of the second arc-shaped plate.

[0022] Preferably, a paper discharge roller is arranged on the side of the sticker roller, a small paper support plate is arranged below the paper discharge roller, a plurality of grooves are arranged on the surface of the paper discharge roller, a plurality of paddles are arranged on one side of the paper discharge roller, and the paddles are inserted into the grooves.

[0023] Preferably, the paddle is provided with an arc-shaped tip, and the small paper is pushed off the surface of the paper discharge roller by the paddle and then enters the first clamping finger or the second clamping finger.

[0024] Preferably, the surface area of ​​the small paper is equal to the surface area of ​​the first curved plate, and the surface area of ​​the small paper is equal to the surface area of ​​the second curved plate.

[0025] Preferably, the sticker roller is rotatably arranged on the side plate.

[0026] In order to achieve the above-mentioned second invention objective, the present invention provides a paper bag forming device, including the small paper sticking device described in the first invention.

[0027] Compared with the prior art, the technical effects of the present invention are as follows:

[0028] (1) The sticker roller comprises a first curved plate and a second curved plate which are symmetrically arranged, wherein the first curved plate is provided with a first clamping finger, and the second curved plate is provided with a second clamping finger; after the first small paper is clamped by the first clamping finger, the sticker roller first contacts the gluing roller by rotating to coat the surface of the first small paper with glue, and at this time, the second clamping finger clamps the second small paper; the sticker roller continues to rotate to paste the first small paper on the paper bag roller, and at this time, the first clamping finger opens, and the sticker roller continues to rotate to pass through the first clamping finger to clamp the next small paper, and this cycle is repeated to achieve paper clamping, gluing and pasting of small papers.

[0029] (2) The position of the handle corresponds to the position of the first arc groove and the second arc groove. When the first arc plate contacts the paper bag roller, the two first arc blocks at the corresponding position of the handle are subjected to additional pressure because the handle is higher than the surface of the bag body, so that the first spring is compressed. The handle occupies the compressed space, so that the handle is wrapped and bonded by the small paper, making the handle more firmly bonded, thereby solving the technical problem of the handle being easy to fall off.

[0030] (3) The position of the handle corresponds to the position of the third arc groove and the fourth arc groove. When the second arc plate contacts the paper bag roller, the two second arc blocks corresponding to the handle are pressed by additional pressure because the handle is higher than the surface of the bag body, so that the second spring is compressed. The handle occupies the compressed space, so that the handle is wrapped and bonded by the small paper, making the handle more firmly bonded, thereby solving the technical problem of the handle easily falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a schematic cross-sectional view of the device for sticking small pieces of paper according to the present invention.

[0033] Figure 2 It is a three-dimensional structural schematic diagram of the small paper sticking device of the present invention.

[0034] Figure 3 It is a three-dimensional structural schematic diagram of the small paper sticking device of the present invention.

[0035] Figure 4 It is a three-dimensional structural schematic diagram of the small paper sticking device of the present invention.

[0036] Figure 5 It is a three-dimensional structural schematic diagram of the small paper sticking device of the present invention.

[0037] Figure 6 It is a schematic cross-sectional view of the first curved plate or the second curved plate of the present invention.

[0038] Figure 7 It is a schematic diagram of the handle and the small paper of the present invention.

[0039] Among them, 1, side plate; 2, sticker roller; 21, end plate; 22, first arc plate; 221, first end; 222, second end; 223, first inclined surface; 224, first clamping finger; 225, first arc groove; 226, second arc groove; 227, first spring; 228, first arc block; 229, step; 23, second arc plate; 231, third end; 232, fourth end; 233, second inclined surface; 234, second clamping finger; 235, third arc groove; 236, fourth arc groove; 237, second spring; 238, second arc block; 239, step; 3, off 1. clutch assembly; 31. cam; 311. arc surface; 312. convex surface; 3121. starting point; 3122. end point; 32. first clutch block; 321. first side; 322. first roller; 323. second side; 324. first pull rod; 33. second clutch block; 331. third side; 332. second roller; 333. fourth side; 334. second pull rod; 34. first tension spring; 35. second tension spring; 4. first rotating shaft; 41. first retaining ring; 5. second rotating shaft; 51. second retaining ring; 6. handle; 7. bag body; 8. paper discharge roller; 9. paper bag roller; 11. small paper. DETAILED DESCRIPTION

[0040] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. Example 1

[0042] Ginseng Figures 1 to 7 As shown, this embodiment discloses a specific implementation of a small paper pasting device.

[0043] Small paper sticking device, see Figures 1 to 7 , comprising a side plate 1, a sticker roller 2 and a clutch assembly 3, wherein the sticker roller 2 is rotatably disposed on the side plate 1;

[0044] The sticker roller 2 includes an end plate 21 and a first arc plate 22 and a second arc plate 23 which are symmetrically arranged. The first arc plate 22 includes a first end 221 and a second end 222. The second arc plate 23 includes a third end 231 and a fourth end 232. The first end 221 and the third end 231 are arranged diagonally.

[0045] A first inclined surface 223 and a first clamping finger 224 are provided at the first end 221, the first clamping finger 224 is fixed to the first rotating shaft 4, the first rotating shaft 4 is rotatably provided on the end plate 21, and the first rotating shaft 4 is provided with a plurality of first retaining rings 41, the first retaining rings 41 are used to limit the axial movement of the first rotating shaft 4;

[0046] A second inclined surface 233 and a second clamping finger 234 are provided at the third end 231, the second clamping finger 234 is fixed to the second rotating shaft 5, the second rotating shaft 5 is rotatably provided on the end plate 21, and the second rotating shaft 5 is provided with a plurality of second retaining rings 51, the second retaining rings 51 are used to limit the axial movement of the second rotating shaft 5;

[0047] The clutch assembly 3 includes a cam 31, a first clutch block 32, a second clutch block 33, a first tension spring 34 and a second tension spring 35, and the cam 31 is fixed to the side plate 1;

[0048] The first clutch block 32 is fixed to the first rotating shaft 4, a first roller 322 is provided on a first side 321 of the first clutch block 32, a first pull rod 324 is provided on a second side 323 of the first clutch block 32, the first pull rod 324 passes through the first circular hole 211 of the end plate 21, one end of the first tension spring 34 is connected to the first pull rod 324, and the other end of the first tension spring 34 is connected to the end plate 21;

[0049] The second clutch block 33 is fixed to the second rotating shaft 5, the second roller 332 is set on the third side 331 of the second clutch block 33, the second pull rod 334 is set on the fourth side 333 of the second clutch block 33, the second pull rod 334 passes through the second circular hole 212 of the end plate 21, one end of the second tension spring 35 is connected to the second pull rod 334, and the other end of the second tension spring 35 is connected to the end plate 21.

[0050] Specifically, see Figure 1 and Figure 4 , the specific process of pasting small paper: the paper discharge roller 8 transfers the pasted small paper 11 to the first clamping finger 224 or the second clamping finger 234; the first clamping finger 224 or the second clamping finger 234 rotates the clamped small paper to the gluing roller 10 for gluing; the sticker roller 2 continues to rotate, and after the sticker roller 2 sticks the small paper 11 to the predetermined position of the paper bag (paper bag roller 9), the first clamping finger 224 or the second clamping finger 234 is released, and a small paper pasting operation is completed. This reciprocating cycle can efficiently complete the small paper pasting operation.

[0051] The working principle of the first clamping finger 224 is as follows: Figure 2As shown, the cam 31 and the sticker roller 2 are coaxially arranged on one side of the side plate 1, wherein the cam 31 is fixed, and the sticker roller 2 transfers the small paper by rotation; the cam 31 is composed of an arc surface 311 and a convex surface 312, wherein the convex surface 312 faces the paper output roller 8, and the convex surface 312 includes a starting point 3121 and an end point 3122; when the first roller 322 contacts the starting point 3121, the convex surface 312 lifts the first roller 322, and the first roller 322 causes the L-shaped first clutch block 32 to swing, thereby driving the first rotating shaft 4 to rotate, so that the first clamping finger 224 opens, and the small paper is released and pasted on the paper bag of the paper bag roller 9; During the contact between the first clamping finger 224 and the convex surface 312, the first clamping finger 224 maintains an open posture. During this period, when the small paper of the paper output roller 8 enters between the first clamping finger 224 and the first inclined surface 223, the first roller 322 runs to the end point 3122 and leaves. After the first roller 322 leaves the convex surface 312, it will be out of contact with the cam 31. Under the pull of the first tension spring 34, the first clutch block 32 is pulled to swing in the opposite direction through the first pull rod 324, thereby driving the first rotating shaft 4 to rotate in the opposite direction, so that the first clamping finger 224 is closed, and the small paper is clamped between the first clamping finger 224 and the first inclined surface 223 until the gluing and sticking of the small paper are completed, and this cycle is repeated.

[0052] The working principle of the second clamping finger 234 is as follows: Figure 2 As shown, the cam 31 and the sticker roller 2 are coaxially arranged on one side of the side plate 1, wherein the cam 31 is fixed, and the sticker roller 2 transfers the small paper by rotation; the cam 31 is composed of an arc surface 311 and a convex surface 312, wherein the convex surface 312 faces the paper output roller 8, and the convex surface 312 includes a starting point 3121 and an end point 3122; when the second roller 332 contacts the starting point 3121, the convex surface 312 lifts the second roller 332, and the second roller 332 causes the L-shaped second clutch block 33 to swing, thereby driving the second rotating shaft 5 to rotate, so that the second clamping finger 234 opens, and the small paper is released and pasted on the paper bag of the paper bag roller 9; During the contact between the second clamping finger 234 and the convex surface 312, the second clamping finger 234 keeps an open posture. During this period, when the small paper of the paper output roller 8 enters between the second clamping finger 234 and the second inclined surface 233, the second roller 332 runs to the end point 3122 and leaves. After the second roller 332 leaves the convex surface 312, it will be out of contact with the cam 31. Under the pull of the second tension spring 35, the second clutch block 35 is pulled to swing in the opposite direction through the second pull rod 334, thereby driving the second rotating shaft 5 to rotate in the opposite direction, so that the second clamping finger 234 is closed, and the small paper is clamped between the second clamping finger 234 and the second inclined surface 233 until the gluing and sticking of the small paper are completed, and this cycle is repeated.

[0053] In order to ensure that the edges of the handle 6 are all bonded by the small paper 11, the surface of the first arc plate 22 is provided with a first arc groove 225 and a second arc groove 226 which are parallel to each other and symmetrically arranged, and a first spring 227 and a corresponding first arc block 228 are arranged in the first arc groove 225, and a first spring 227 and a corresponding first arc block 228 are arranged in the second arc groove 226; when the small paper on the surface of the first arc plate 22 is not subjected to pressure (when not subjected to pressure from the handle 6), the surface of the first arc block 228 is on the same plane as the surface of the first arc plate 22 under the action of the first spring 227; when the small paper on the surface of the first arc plate 22 is subjected to pressure (when subjected to pressure from the handle 6), the first spring 227 is compressed so that the surface of the first arc block 228 is lower than the surface of the first arc plate 22.

[0054] The working principle of the first curved plate 22 to achieve uniform glue coating is as follows: Figure 5 and Figure 6 , after the small paper 11 is glued, because the handle 6 is attached to the surface of the bag body 7, the handle 6 is higher than the surface of the bag body 7. When the small paper 11 is pasted, that is, when the sticker roller 2 and the paper bag roller 9 cooperate to paste the small paper, it is easy to encounter the problem that the edge of the handle cannot be glued, resulting in the handle not being firmly glued. In order to overcome this defect, the surface of the first arc plate 22 is provided with a first arc groove 225 and a second arc groove 226 which are parallel and symmetrical to each other, a first spring 227 and a corresponding first arc block 228 are arranged in the first arc groove 225, and a first spring 227 and a corresponding first arc block 228 are arranged in the second arc groove 226. The first arc block 228 and the first arc groove 225 cooperate through a step 229, and the first arc block 228 and the second arc groove 512 cooperate through the step 229. Under normal circumstances, when the small paper is not pasted, the cooperation between the first arc groove 225 and the first arc block 228 is taken as an example for explanation. When the first arc groove 225 and the first arc block 228 are When the small paper on the surface of the arc plate 22 is not subjected to pressure (when it is not subjected to pressure from the handle 6), that is, when it is not in contact with the paper bag roller 9, the surface of the first arc block 228 is on the same plane as the surface of the first arc plate 22 under the action of the first spring 227, but the handle is higher than the surface of the first arc plate 22; when the small paper on the surface of the first arc plate 22 is subjected to pressure (when it is subjected to pressure from the handle 6), that is, when it is in contact with the paper bag roller 9, under the additional pressure of the handle 6 on the surface of the paper bag roller 9, the first spring 227 is compressed so that the surface of the first arc block 228 is lower than the surface of the first arc plate 22 and is blocked by the step 229. At this time, the handle 6 occupies the compressed space and is wrapped by the small paper 7, so that the small paper 7 is wrapped and bonded to the handle 6, so that the edge of the handle 6 is also bonded, so that the handle 6 is firmly bonded and not easy to fall off; the cooperation principle of the second arc groove 226 and the first arc block 228 is the same, which will not be repeated here.

[0055] In order to ensure that the edges of the handle 6 are all bonded by the small paper 11, the surface of the second arc plate 23 is provided with a third arc groove 235 and a fourth arc groove 236 which are parallel to each other and symmetrically arranged, and a second spring 237 and a corresponding second arc block 238 are arranged in the third arc groove 235, and a second spring 237 and a corresponding second arc block 238 are arranged in the fourth arc groove 236; when the small paper on the surface of the second arc plate 23 is not subjected to pressure (when not subjected to pressure from the handle 6), the surface of the second arc block 238 is in the same plane as the surface of the second arc plate 23 under the action of the second spring 237; when the small paper on the surface of the second arc plate 23 is subjected to pressure (when subjected to pressure from the handle 6), the second spring 237 is compressed so that the surface of the second arc block 238 is lower than the surface of the second arc plate 23.

[0056] The working principle of the second curved plate 23 to achieve uniform glue coating is as follows: Figure 5 and Figure 6 , after the small paper 11 is glued, because the handle 6 is attached to the surface of the bag body 7, the handle 6 is higher than the surface of the bag body 7. When the small paper 11 is pasted, that is, when the sticker roller 2 and the paper bag roller 9 cooperate to paste the small paper, it is easy to encounter the problem that the edge of the handle cannot be glued, resulting in the handle not being firmly glued. In order to overcome this defect, the surface of the second arc plate 23 is provided with a third arc groove 235 and a fourth arc groove 236 which are parallel and symmetrical to each other, and a second spring 237 and a corresponding second arc block 238 are arranged in the third arc groove 235, and a second spring 237 and a corresponding second arc block 238 are arranged in the fourth arc groove 236. The second arc block 238 and the third arc groove 235 cooperate through a step 229, and the second arc block 238 and the fourth arc groove 236 cooperate through a step 229. Under normal circumstances, when the small paper is not pasted, the cooperation between the third arc groove 235 and the second arc block 238 is taken as an example for explanation. When the When the small paper on the surface of the second arc plate 23 is not subjected to pressure (when it is not subjected to pressure from the handle 6), that is, when it is not in contact with the paper bag roller 9, the surface of the second arc block 238 is on the same plane as the surface of the second arc plate 23 under the action of the second spring 237, but the handle is higher than the surface of the second arc plate 23; when the small paper on the surface of the second arc plate 23 is subjected to pressure (when it is subjected to pressure from the handle 6), that is, when it is in contact with the paper bag roller 9, under the additional pressure of the handle 6 on the surface of the paper bag roller 9, the second spring 237 is compressed so that the surface of the second arc block 238 is lower than the surface of the second arc plate 23 and is blocked by the step 239. At this time, the compressed space is squeezed and wrapped by the small paper 7, so that the small paper 7 is wrapped and bonded to the handle 6, so that the edge of the handle 6 is also bonded, so that the handle 6 is firmly bonded and not easy to fall off; the fourth arc groove 236 has the same cooperation principle as the second arc block 238, which will not be repeated here.

[0057] It should be further explained that the surface area of ​​the small paper is equal to or slightly smaller than the surface area of ​​the first curved plate 22, and the surface area of ​​the small paper is equal to or slightly smaller than the surface area of ​​the second curved plate 23; in addition, the surface area of ​​the fan-shaped glue roller 10 is equal to or slightly smaller than the surface area of ​​the small paper to prevent the glue from being applied to the area outside the small paper, thereby avoiding cleaning the glue.

[0058] The cooperation principle of the paper discharge roller 8 and the sticker roller 2 is as follows: Figure 2 A paper discharge roller 8 is arranged on the side of the sticker roller 2, a small paper support plate 81 is arranged below the paper discharge roller 8, a plurality of grooves 82 are arranged on the surface of the paper discharge roller 8, a plurality of paddles 83 are arranged on one side of the paper discharge roller 8, and the paddles 83 are inserted into the grooves 82; the paddles 83 are provided with arc-shaped tips 831, and the small paper 7 is removed from the surface of the paper discharge roller 8 by the paddles 83 and enters the first clamping finger 224 or the second clamping finger 234; see Figure 2 The small paper is transmitted to the first clamping finger 224 or the second clamping finger 234 through the paper discharge roller 8, and the small paper support plate 81 and the arc-shaped tip 831 of the paddle 83 form a first slit. The small paper passes through the first slit and enters the second slit formed by the opened first clamping finger 224 and the first inclined surface 223, or the small paper passes through the first slit and enters the second slit formed by the opened second clamping finger 234 and the second inclined surface 233. After the first clamping finger 224 or the second clamping finger 234 is closed, it is sent to the next process through the sticker roller 2.

Claims

1. A small paper pasting device, characterized in that: Including side panels, sticker rollers and clutch components; The sticker roller comprises an end plate and a first arc plate and a second arc plate which are symmetrically arranged, wherein the first arc plate comprises a first end and a second end, and the second arc plate comprises a third end and a fourth end, and the first end and the third end are arranged diagonally; A first inclined surface and a first clamping finger are provided at the first end, the first clamping finger is fixed to a first rotating shaft, and the first rotating shaft is rotatably provided on the end plate; A second inclined surface and a second clamping finger are provided at the third end, the second clamping finger is fixed to a second rotating shaft, and the second rotating shaft is rotatably provided on the end plate; The clutch assembly comprises a cam, a first clutch block, a second clutch block, a first tension spring and a second tension spring, and the cam is fixed to the side plate; The first clutch block is fixed to the first rotating shaft, a first roller is arranged on a first side of the first clutch block, a first pull rod is arranged on a second side of the first clutch block, the first pull rod passes through a first circular hole of the end plate, one end of the first tension spring is connected to the first pull rod, and the other end of the first tension spring is connected to the end plate; The second clutch block is fixed to the second rotating shaft, a second roller is arranged on the third side of the second clutch block, a second pull rod is arranged on the fourth side of the second clutch block, the second pull rod passes through the second circular hole of the end plate, one end of the second tension spring is connected to the second pull rod, and the other end of the second tension spring is connected to the end plate; The surface of the first arc plate is provided with a first arc groove and a second arc groove which are parallel and symmetrical to each other, a first spring and a corresponding first arc block are arranged in the first arc groove, and a first spring and a corresponding first arc block are arranged in the second arc groove; The surface of the second arc plate is provided with a third arc groove and a fourth arc groove which are parallel and symmetrical to each other, the third arc groove is provided with a second spring and a corresponding second arc block, and the fourth arc groove is provided with a second spring and a corresponding second arc block.

2. The small paper pasting device according to claim 1, characterized in that: The first clutch block and the second clutch block are both L-shaped.

3. The small paper pasting device according to claim 1, characterized in that: The first rotating shaft is provided with a plurality of first retaining rings, and the second rotating shaft is provided with a plurality of second retaining rings.

4. The small paper pasting device according to claim 1, characterized in that: When the small paper on the surface of the first curved plate is not subjected to pressure, the surface of the first curved block is in the same plane as the surface of the first curved plate under the action of the first spring; When the small paper on the surface of the first arc-shaped plate is subjected to pressure, the first spring is compressed to make the surface of the first arc-shaped block lower than the surface of the first arc-shaped plate.

5. The small paper pasting device according to claim 1, characterized in that: When the small paper on the surface of the second curved plate is not subjected to pressure, the surface of the second curved block is in the same plane as the surface of the second curved plate under the action of the second spring; When the small paper on the surface of the second arc-shaped block is subjected to pressure, the second spring is compressed to make the surface of the second arc-shaped block lower than the surface of the second arc-shaped plate.

6. The device for attaching small pieces of paper as claimed in any one of claims 1 to 5, characterized in that: A paper discharge roller is arranged on the side of the sticker roller, a small paper support plate is arranged below the paper discharge roller, a plurality of grooves are arranged on the surface of the paper discharge roller, a plurality of paddles are arranged on one side of the paper discharge roller, and the paddles are inserted into the grooves.

7. The small paper pasting device according to claim 6, characterized in that: The paddle is provided with an arc-shaped tip, and the small paper is pushed off from the surface of the paper discharge roller by the paddle and then enters the first clamping finger or the second clamping finger.

8. The small paper pasting device according to claim 6, characterized in that: The surface area of ​​the small paper is equal to the surface area of ​​the first curved plate, and the surface area of ​​the small paper is equal to the surface area of ​​the second curved plate.

9. The small paper pasting device according to claim 6, characterized in that: The sticker roller is rotatably arranged on the side plate.

10. A paper bag forming device, characterized in that: It comprises a small paper sticking device as described in any one of claims 1-9.

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