Material holding structure of transverse cutting machine

Abstract

The material holding structure of the transverse cutting machine comprises a collecting device and a material holding device, the collecting device comprises a power shaft I, a roller, a rotating shaft I, a rotating shaft II, a large cam disc, a small cam disc and a compensation cam piece, and the material holding device comprises a power shaft II, a belt, a rotating shaft III, a material holding support and a torsion spring. Multiple layers of thin paper can be automatically collected by operating the roller for a plurality of circles, the thin paper is collected to a certain number and then is held away through the material holding device, the material holding claw can be automatically opened and closed, automatic stacking is achieved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of cross-cutting machines, and specifically to a sheet-gripping structure of a cross-cutting machine. Background Art

[0002] Cross-cutting machines are suitable for longitudinal and transverse cross-cutting of various types of paper, such as gold and silver cardboard, plain rainbow paper, laser anti-counterfeiting paper, white cardboard, and various thin papers, and are widely applicable to the transverse or longitudinal shearing of trademarks, cigarette labels, calendars, wine boxes, poker cards, and paper-plastic printed composite cardboard. At present, when the cross-cutting machines on the market process thin papers, due to the overly thin papers, it is difficult to achieve the effect of automatic collection, resulting in time-consuming and laborious collection and sorting work after processing thin papers. Content of the Utility Model

[0003] In view of the defects existing in the existing cross-cutting machines, the technical problem to be solved by the utility model is to provide a sheet-gripping structure of a cross-cutting machine, which can automatically collect thin papers until a certain number is reached and then grip and stack them, improving work efficiency.

[0004] To achieve the above object, according to one aspect of the utility model, the utility model is realized by the following technical measures: A sheet-gripping structure of a cross-cutting machine includes a collection device and a sheet-gripping device. The collection device includes a power shaft I, a roller, a rotating shaft I, a rotating shaft II, a large cam disk, a small cam disk, and a compensation cam piece. The sheet-gripping device includes a power shaft II, a belt, a rotating shaft III, a sheet-gripping bracket, and a torsion spring.

[0005] Both ends of the power shaft I are sleeved with the outer housing. A plurality of roller disks are provided on the power shaft I. The power shaft I drives the roller disks to rotate. The roller is wrapped around the outer circle of the roller disk and fixed. Two through holes are provided on the roller disk. The rotating shaft I and the rotating shaft II are sleeved in the through holes. The roller has openings at the positions of the rotating shaft I and the rotating shaft II. The collection strip is fixed on the roller disk. The collection strip is provided with a plurality of collection platforms. Grooves are provided between the collection platforms. A plurality of outer claws are provided on the rotating shaft I. A plurality of inner claws are provided on the rotating shaft II. The inner claws can open and close inside the arc of the outer claws. The positions of the inner claws and the outer claws correspond to the positions of the collection platforms one by one.

[0006] The large cam disk and the small cam disk are fixed on the outer housing. The center of the large cam disk is provided with a through hole in the shape of an inner cam. The outer circle of the small cam disk is in the shape of an outer cam, and a through hole is provided in the center. One end of the power shaft I passes through the through holes of the large cam disk and the small cam disk and is connected to the motor on the outer housing.

[0007] Both ends of the rotating shaft I are respectively fixedly connected with a positioning block I and a positioning block IV. A rotating wheel I and a rotating wheel IV are respectively connected to the positioning block I and the positioning block IV. The positioning block III and the positioning block VII are fixed on the roller disk. The positioning block I is connected to the positioning block III through a spring. The acting force of the spring makes the rotating wheel I abut against the outer circle of the small cam disk. The positioning block IV is connected to the positioning block VII through a spring.

[0008] Both ends of the rotating shaft II are fixedly connected to the positioning block II and the positioning block IX respectively. A rotating wheel II is connected to the positioning block II. The positioning block VIII is fixed on the drum disc. The positioning block IX is connected to the positioning block VIII through a spring. The acting force of the spring makes the rotating wheel II abut against the inner cam surface of the large cam disc;

[0009] The compensation cam piece is sleeved on the power shaft I and installed near the rotating wheel IV. The compensation cam piece is connected to the air cylinder, and the air cylinder drives the compensation cam piece to rotate back and forth;

[0010] One end of the power shaft II is sleeved with the outer housing, and the other end is connected to the motor on the outer housing. The pulley I is sleeved at both ends of the power shaft II and can rotate with the power shaft II. The pulley II is sleeved on the shaft of the outer housing. The pulley I is connected to the pulley II through a belt and can drive the pulley II to rotate. There is a fixed block II on the outer housing on one side of the pulley I. There is a material gripping block on the fixed block II. The material gripping block is arranged on the side of the power shaft II close to the drum. One end of the material gripping block close to the drum is provided with a cam structure. The discharging block is fixed on the shaft of the outer housing at the pulley II. The discharging block is provided with a cam structure;

[0011] A positioning block VI is fixed on the belt. The material gripping bracket is fixed to the positioning block VI. There are several material gripping platforms on the material gripping bracket. The positions of the material gripping platforms correspond one by one to the positions of the grooves between the collection platforms;

[0012] The rotating shaft III is sleeved on the positioning block VI. One end of the rotating shaft III corresponding to the material gripping block is provided with a positioning block V. A rotating wheel III is provided on the positioning block V. There are several material gripping claws on the rotating shaft III. The positions of the material gripping claws correspond one by one to the positions of the material gripping platforms. One end of the torsion spring is connected to the rotating shaft III, and the other end abuts against the lower end of the material gripping bracket.

[0013] Furthermore, an opening is provided on the outer circle of the drum disc. The fixed block I is fixed at the opening on the outer circle of the drum disc. There are two through holes on the fixed block I. The rotating shaft I and the rotating shaft II are connected to the through holes of the fixed block I through bearings or bushings. The collection strip is fixed on the fixed block I.

[0014] Furthermore, a rotating wheel V is provided on the positioning block VI. A guiding groove is provided on the outer housing close to the belt side. When the belt rotates, the rotating wheel V moves in the guiding groove.

[0015] Furthermore, one end of the material gripping block far from the drum is provided with a U-shaped opening. The U-shaped opening is sleeved on the power shaft II. There is a fixing groove on the material gripping block at the U-shaped opening. The material gripping block is connected to the fixed block II through the fixing groove and bolts.

[0016] Furthermore, there are two fixing grooves on the discharging block. The discharging block is fixed on the shaft and the fixed rod of the outer housing through the two fixing grooves and bolts.

[0017] Further, the positioning block IV is connected to the bolt I through a spring, and the bolt I is connected to the positioning block VII. The tightness of the spring can be adjusted through the bolt I, thereby adjusting the gripping force of the outer claw.

[0018] Further, the positioning block IX is connected to the bolt II through a spring, and the bolt II is connected to the positioning block VIII. The tightness of the spring can be adjusted through the bolt II, thereby adjusting the gripping force of the inner claw.

[0019] Further, the small cam disk is formed by riveting two semi-circular disks, and the small cam disk is provided with a first notch and a second notch.

[0020] Further, a plurality of strip-shaped static brushes are provided on the outer edge of the roller.

[0021] Further, a positioning wheel is fixed on the rotating shaft III, one end of the torsion spring is clamped on the positioning wheel, and the other end abuts against the lower end of the sheet holding bracket.

[0022] Compared with the prior art, the advantages of the present utility model are as follows: for the sheet holding structure of a cross-cutting machine of the present utility model, the inner and outer claws can be opened and closed alternately. Multiple layers of thin paper can be automatically collected by running the roller for several circles. After a certain number of thin papers are collected, they are then picked up by the sheet holding device. The sheet holding claws can be automatically opened and closed to achieve automatic stacking, improving the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0024] Figure 1 is a schematic diagram of the overall structure of a sheet holding structure of a cross-cutting machine according to the present utility model;

[0025] Figure 2 is a schematic diagram of the structure of the sheet holding device according to the present utility model;

[0026] Figure 3 is an exploded structure diagram of the collection device according to the present utility model;

[0027] Figure 4 is a partial enlarged view of one end of the collection device where the large cam disk is installed according to the present utility model;

[0028] Figure 5 is a partial enlarged view of one end of the collection device where the compensation cam piece is installed according to the present utility model.

[0029] Description of reference numerals: 1, power shaft I; 2, roller; 3, roller disc; 4, rotating shaft I; 5, rotating shaft II; 6, large cam disc; 7, small cam disc; 8, compensation cam piece; 9, cylinder; 10, spring; 11, runner I; 12, runner II; 13, runner III; 14, runner IV; 15, runner V; 16, positioning block I; 17, positioning block II; 18, positioning block III; 19, positioning block IV; 20, positioning block V; 21, positioning block VI; 22, positioning block VII; 23, positioning block VIII; 24, positioning block IX; 25, fixing block I; 26, fixing block II; 27, pulley I; 28, pulley II; 29, belt; 30, outer claw; 31, inner claw; 32, static brush; 33, collecting strip; 34, collecting table; 35, bolt I; 36, bolt II; 37, power shaft II; 38, rotating shaft III; 39, material gripping bracket; 40, material gripping table; 41, material gripping claw; 42, material gripping block; 43, unloading block; 44, torsion spring; 45, positioning wheel; 46, outer housing; 47, guiding groove; 48, first notch; 49, second notch; 50, fixing groove. Detailed implementation mode

[0030] In the following, the present utility model will be described in detail with reference to the drawings and in combination with embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "bottom", "top", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0032] Please refer to Figures 1-5 , a material gripping structure of a cross-cutting machine provided in this embodiment includes a collecting device and a material gripping device. The collecting device includes a power shaft I 1, a roller 2, a rotating shaft I 4, a rotating shaft II 5, a large cam disc 6, a small cam disc 7, and a compensation cam piece 8. The material gripping device includes a power shaft II 37, a belt 29, a rotating shaft III 38, a material gripping bracket 39, and a torsion spring 44;

[0033] On the outer edge of the roller 2, there are several strip-shaped static brushes 32. Both ends of the power shaft I 1 are connected to the outer housing 46 through bearings or bushings. At both ends of the power shaft I 1, there are roller discs 3 respectively. When the roller 2 is relatively long, several roller discs 3 can be added in the middle. The roller discs 3 are riveted and fixed to the power shaft I 1 and rotate with the power shaft I 1. After the roller 2 is wrapped around the outer circle of the roller discs 3, it is fixed with bolts. After fixation, the roller 2 can rotate with the power shaft I 1. The roller 2 has openings at the rotating shafts I 4 and II 5. The outer circle of the roller disc 3 has an opening. At the opening of the outer circle of the roller disc 3, a fixing block I 25 is fixed with bolts. The fixing block I 25 is provided with two through holes. The rotating shafts I 4 and II 5 are connected to the through holes of the fixing block I 25 through bearings or bushings; the collecting strip 33 is fixed to the fixing block I 25 with bolts. The collecting strip 33 is provided with several collecting platforms 34. There are grooves between each collecting platform 34; several inner claws 31 are fixed to the rotating shaft II 5 with bolts, and several outer claws 30 are fixed to the rotating shaft I 4 with bolts. The positions of the inner claws 31 and the outer claws 30 correspond to the positions of the collecting platforms 34 one by one. Moreover, the outer claws 30 are larger in size and greater in arc than the inner claws 31. The inner claws 31 can open and close inside the arc of the outer claws 30;

[0034] The large cam disc 6 and the small cam disc 7 are fixed to the outer housing 46 with bolts. The center of the large cam disc 6 is provided with an inner cam-shaped through hole. The small cam disc 7 is formed by riveting two semi-circular discs. The outer circle of the small cam disc 7 is an outer cam shape, and the center is provided with a through hole. One end of the power shaft I 1 passes through the through holes of the large cam disc 6 and the small cam disc 7 and is connected to the motor on the outer housing 46;

[0035] One end of the rotating shaft I 4 is fixedly connected to the positioning block I 16. The positioning block I 16 is connected with a runner I 11 through bolts. The positioning block I 16 is connected to the positioning block III 18 through a spring 10. The positioning block III 18 is fixed to the roller disc 3 with bolts. The pulling force of the spring 10 makes the runner I 11 press against the outer circle of the small cam disc 7. The other end of the rotating shaft I 4 is fixedly connected to the positioning block IV 19. The positioning block IV 19 is connected with a runner IV 14 through bolts. The positioning block IV 19 is connected to a bolt I 35 through a spring 10. The bolt I 35 is connected to the positioning block VII 22. The positioning block VII 22 is fixed to the roller disc 3 with bolts. The tightness of the spring 10 can be adjusted through the bolt I 35, so as to adjust the grasping force of the outer claws 30;

[0036] One end of the rotating shaft II 5 is fixedly connected to the positioning block II 17. The positioning block II 17 is connected with the rotating wheel II 12 by bolts. The other end of the rotating shaft II 5 is fixedly connected to the positioning block IX 24. The positioning block IX 24 is connected to the bolt II 36 through the spring 10. The bolt II 36 is connected to the positioning block VIII 23. The positioning block VIII 23 is fixed on the drum disc 3 by bolts. The thrust of the spring 10 drives the rotating shaft II 5 to rotate by driving the positioning block IX 24, and then drives the positioning block II 17 to rotate, so that the rotating wheel II 12 abuts against the inner cam surface of the large cam disc 6. The tightness of the spring 10 can be adjusted through the bolt II 36, so as to adjust the gripping force of the inner claw 31;

[0037] The compensation cam piece 8 is connected to the power shaft I 1 through a bearing or a bushing and is installed near the rotating wheel IV 14. The compensation cam piece 8 is connected to the air cylinder 9. The air cylinder 9 can drive the compensation cam piece 8 to rotate back and forth. When the compensation cam piece 8 rotates to the relative position with the second notch of the small cam disc 7, the rotating wheel IV 14 will abut against the outer edge of the compensation cam piece 8 and rotate under the action of the spring 10;

[0038] One end of the power shaft II 37 is sleeved with the outer housing 46 through a bearing or a bushing, and the other end is connected to the motor on the outer housing 46. The pulley I 27 is sleeved at both ends of the power shaft II 37 and can rotate with the power shaft II 37. The pulley II 28 is connected and fixed to the shaft of the outer housing 46 through a bearing or a bushing. The pulley I 27 is connected to the pulley II 28 through the belt 29 and can drive the pulley II 28 to rotate; One end of the material gripping block 42 is provided with a cam structure, and the other end is provided with a U-shaped opening. The U-shaped opening of the material gripping block 42 is sleeved on the power shaft II 37. A fixing groove 50 is provided at the U-shaped opening of the material gripping block 42. The material gripping block 42 is connected and fixed to the fixing block II 26 through the fixing groove 50 by bolts. The fixing block II 26 is connected to the outer housing 46 by bolts. The fixing position of the material gripping block 42 can be adjusted through the fixing groove 50; The unloading block 43 is provided with a cam structure and two fixing grooves 50. The unloading block 43 is fixed to the shaft and the fixing rod of the outer housing 46 at the pulley II 28 through the two fixing grooves 50 and bolts. The fixing position of the unloading block 43 can be adjusted through the fixing groove 50;

[0039] The positioning block VI 21 is fixed on the belt 29 by bolts. The material gripping bracket 39 and the rotating wheel V 15 are fixed on the positioning block VI 21 by bolts. A guiding groove 47 is provided on one side of the outer housing 46 close to the belt 29, so that the rotating wheel V 15 can move in the guiding groove 47 during movement, preventing the belt 29 from being stressed too much and causing unstable operation. A number of material gripping platforms 40 are provided on the material gripping bracket 39. The positions of the material gripping platforms 40 correspond one by one to the groove positions between the collection platforms 34;

[0040] The rotating shaft III 38 is sleeved on the positioning block VI 21 and can rotate within the positioning block VI 21. A number of paper-gripping claws 41 are provided on the rotating shaft III 38. The paper-gripping claws 41 are fixed to the rotating shaft III 38 by bolts. The positions of the paper-gripping claws 41 correspond one by one to the position of the paper-gripping table 40. The positioning block V 20 is fixed to one end of the rotating shaft III 38 by bolts. A rotating wheel III 13 is also fixed on the positioning block V 20. The positioning wheels 45 are fixed to both ends of the rotating shaft III 38. One end of the torsion spring 44 is fixedly connected to the positioning wheel 45, and the other end abuts against the lower end of the paper-gripping bracket 39. The acting force of the torsion spring 44 causes the paper-gripping claws 41 and the paper-gripping table 40 to bite.

[0041] A paper-gripping structure of a cross-cutting machine provided in this embodiment has the following working principle: It is divided into a collection stage and a paper-gripping stage. The collection stage is further divided into the following four stages.

[0042] The first stage: The motor drives the power shaft I 1 to drive the roller disc 3 to rotate. The roller disc 3 drives the roller 2, the rotating shaft I 4, and the rotating shaft II 5 to rotate together with the power shaft I 1 as the center. The rotation of the rotating shaft I 4 drives the positioning block I 16, and the positioning block I 16 drives the rotating wheel I 11. Under the acting force of the spring 10, the rotating wheel I 11 always moves along the outer ring of the small cam disc 7. When the rotating wheel I 11 turns to the first notch of the small cam disc 7, the rotating wheel I 11 falls into the first notch, driving the positioning block I 16 to move. The positioning block I 16 pulls the rotating shaft I 4 to rotate (rotate with the rotating shaft I 4 as the center), so that the outer claw 30 opens. At this time, the opening of the roller 2 turns to the vicinity of the feeding belt. The feeding belt sends the thin paper to the roller 2, and the thin paper is sent into the opening of the outer claw 30 and waits to be clamped. At the same time, the rotation of the rotating shaft II 5 drives the positioning block II 17, and the positioning block II 17 drives the rotating wheel II 12 to rotate. Due to the thrust of the spring 10, the rotating wheel II 12 moves along the inner ring of the large cam disc 6. In this stage, the rotating wheel II 12 is in the part with a thicker inner ring wall. The movable distance of the spring 10 pushing the positioning block II 17 and the rotating wheel II 12 is smaller, that is, the rotatable angle of the rotating shaft II 5 is small, and the inner claw 31 cannot open and remains in the biting state.

[0043] The second stage: The roller 2 continues to rotate. After the rotating wheel I 11 moves out of the first notch and the small cam disc 7 pushes the rotating wheel I 11 away, the rotating wheel I 11 drives the positioning block I 16 to move and drives the rotating shaft I 4 to rotate (in the opposite direction to the rotation direction of the rotating shaft I 4 in the first stage). When the rotating shaft I 4 rotates, it drives the outer claw 30 to rotate, so that the outer claw 30 bites with the collection table 34. After the outer claw 30 and the collection table 34 bite, they can clamp the thin paper and drive the thin paper to rotate with the roller 2. The outer static brush 32 brushes the thin paper along the outer side of the thin paper to make it better fit on the outer ring of the roller 2. At the same time, in this stage, the rotating wheel II 12 has turned to the part with a thinner inner ring wall of the large cam disc 6. The movable distance of the spring 10 pushing the positioning block II 17 and the rotating wheel II 12 is larger, that is, the rotatable angle of the rotating shaft II 5 is large, driving the inner claw 31 to open.

[0044] Third stage: The drum 2 continues to rotate. The runner Ⅰ 11 is about to enter the second notch of the small cam disc 7. At this time, the cylinder 9 drives the compensation cam piece 8 to rotate to a position corresponding to the second notch of the small cam disc 7. At this time, the runner Ⅳ 14 abuts against the outer edge of the compensation cam piece 8, restricting the runner Ⅰ 11 from falling into the second notch, that is, restricting the rotation of the rotating shaft Ⅰ 4, so that the outer claw 30 remains in the engaged state. In this stage, the runner Ⅱ 12 is still in the thinner part of the inner wall of the large cam disc 6, and the inner claw 31 remains open.

[0045] Fourth stage: The drum 2 continues to rotate. In this stage, the runner Ⅱ 12 rotates from the thinner part of the inner wall of the large cam disc 6 to the thicker part of the inner wall of the large cam disc 6. The large cam disc 6 squeezes and pushes the runner Ⅱ 12 to move, thereby driving the positioning block Ⅱ 17 to move and driving the rotating shaft Ⅱ 5 to rotate (in the opposite direction to the rotation direction of the rotating shaft Ⅱ 5 in the second stage). When the rotating shaft Ⅱ 5 rotates, it drives the inner claw 31 to rotate, so that the inner claw 31 engages with the collection table 34. In this stage, there is no notch on the small cam disc 7, and the outer claw 30 can always remain in the engaged state.

[0046] When the four stages are completed, that is, the drum 2 runs one circle. The inner and outer claws 30 can be alternately opened and closed, so that the thin paper is always clamped on the drum 2 by the inner claw 31 or the outer claw 30 during the collection stage. By running the drum 2 for several circles, multiple layers of thin paper can be automatically collected. After a certain number of thin papers are collected, they are picked up by the picking device.

[0047] Paper picking stage: The motor drives the power shaft II 37 to rotate. The power shaft II 37 drives the pulley I 27 to rotate. The pulley I 27 drives the belt 29 to move. The positioning block VI 21 fixed on the belt 29 drives the rotating shaft III 38 and the paper picking bracket 39 to move along with the belt 29. When the paper picking bracket 39 moves to the paper picking block 42, the runner III 13 on the positioning block V 20 touches the cam part of the paper picking block 42. The paper picking block 42 presses against the runner III 13 to make the positioning block V 20 rotate. The positioning block V 20 drives the rotating shaft III 38 to rotate, and the paper picking claws 41 on the rotating shaft III 38 open. At this time, the opening of the drum 2 turns to the opening of the paper picking claws 41. The gaps between the respective paper picking claws 41 and the collection table 34 are aligned and pass by alternately. At the same time, the runner I 11 turns to the second notch 49 of the small cam disk 7. The cylinder 9 is activated to push the compensation cam piece 8, causing the compensation cam piece 8 to rotate and move away so that it cannot press against the runner IV 14. Therefore, the runner I 11 drops into the second notch 49. The runner I 11 drives the positioning block I 16 to move. The positioning block I 16 pulls the rotating shaft I 4 to rotate (the rotating direction of the rotating shaft I 4 in the first stage is the same), causing the outer claws 30 to open, and the inner claws 31 also remain open (the principle is the same as in the above-mentioned third stage). After the outer and inner claws 30 open, the thin paper collected falls into the opening of the paper picking claws 41. The paper picking bracket 39 continues to move. After the runner III 13 leaves the cam part of the paper picking block 42, under the action of the torsion spring 44, the rotating shaft III 38 rotates back to its original position. The rotating shaft III 38 drives the paper picking claws 41 to bite with the paper picking to clamp the thin paper. The paper picking bracket 39 continues to move. When it moves near the pulley II 28, the runner III 13 touches the cam part of the unloading block 43. The unloading block 43 presses against the runner III 13 to make the positioning block V 20 rotate. The positioning block V 20 drives the rotating shaft III 38 to rotate, and the paper picking claws 41 on the rotating shaft III 38 open. The paper picking device releases the thin paper so that the thin paper falls onto the receiving table to complete unloading. The receiving table can be lifted and lowered so that the thin paper can be stacked neatly.

[0048] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A material holding structure of a cross-cutting machine, characterized in that: It includes a collecting device and a material holding device. The collecting device includes a power shaft I, a roller, a rotating shaft I, a rotating shaft II, a large cam plate, a small cam plate, and a compensation cam plate. The material holding device includes a power shaft II, a belt, a rotating shaft III, a material holding bracket, and a torsion spring. Both ends of the power shaft I are sleeved with the outer shell, and a plurality of roller discs are arranged on the power shaft I. The power shaft I drives the roller disc to rotate, and the roller is wrapped around the outer ring of the roller disc and fixed. Two through holes are arranged on the roller disc, and the rotating shaft I and the rotating shaft II are sleeved in the through holes. The roller is provided with openings at the rotating shaft I and the rotating shaft II. The collecting bar is fixed on the roller disc, and the collecting bar is provided with a plurality of collecting tables, and grooves are arranged between the collecting tables. A plurality of outer claws are arranged on the rotating shaft I, and a plurality of inner claws are arranged on the rotating shaft II. The inner claws can be opened and closed within the arc of the outer claws, and the positions of the inner claws and the outer claws correspond to the positions of the collecting tables one by one. A large cam disc and a small cam disc are fixed on the outer shell. The center of the large cam disc is provided with an inner cam-shaped through hole. The outer ring of the small cam disc is an outer cam-shaped through hole with a through hole in the center. One end of the power shaft I passes through the through holes of the large cam disc and the small cam disc and is connected to the motor on the outer shell. The two ends of the rotating shaft Ⅰ are respectively fixedly connected to the positioning block Ⅰ and the positioning block Ⅳ, the positioning block Ⅰ and the positioning block Ⅳ are respectively connected to the rotating wheel Ⅰ and the rotating wheel Ⅳ, the positioning block Ⅲ and the positioning block Ⅶ are fixed on the drum disc, the positioning block Ⅰ is connected to the positioning block Ⅲ through a spring, the acting force of the spring makes the rotating wheel Ⅰ press against the outer ring of the small cam disc, and the positioning block Ⅳ is connected to the positioning block Ⅶ through a spring; The two ends of the rotating shaft II are respectively fixedly connected to the positioning block II and the positioning block IX. The positioning block II is connected to the rotating wheel II. The positioning block VIII is fixed on the drum disc. The positioning block IX is connected to the positioning block VIII through a spring. The acting force of the spring makes the rotating wheel II press against the inner cam surface of the large cam disc. The compensation cam piece is sleeved on the power shaft Ⅰ and installed near the rotating wheel Ⅳ. The compensation cam piece is connected to the cylinder, and the cylinder drives the compensation cam piece to rotate back and forth; One end of the power shaft II is sleeved with the outer shell, and the other end is connected to the motor on the outer shell. The pulley I is sleeved on both ends of the power shaft II and can rotate with the power shaft II. The pulley II is sleeved on the shaft of the outer shell. The pulley I is connected with the pulley II through a belt and can drive the pulley II to rotate. A fixed block II is provided on the outer shell on one side of the pulley I. A material gripping block is provided on the fixed block II. The material gripping block is provided on the side of the power shaft II close to the roller. A cam structure is provided on the end of the material gripping block close to the roller. The unloading block is fixed on the shaft of the outer shell at the pulley II, and a cam structure is provided on the unloading block. A positioning block VI is fixed on the belt, a material holding bracket is fixed on the positioning block VI, and a plurality of material holding tables are arranged on the material holding bracket, and the positions of the material holding tables correspond to the positions of the grooves between the collecting tables one by one; The rotating shaft III is sleeved on the positioning block VI, and a positioning block V is provided on the end of the rotating shaft III corresponding to the material holding block, and a rotating wheel III is provided on the positioning block V. The rotating shaft III is provided with a plurality of material holding claws, and the positions of the material holding claws correspond to the positions of the material holding platform one by one. One end of the torsion spring is connected to the rotating shaft III, and the other end is against the lower end of the material holding bracket.

2. The material gripping structure of the cross-cutting machine according to claim 1, characterized in that: The outer ring of the drum disc is provided with an opening, and the fixing block I is fixed at the opening of the outer ring of the drum disc. The fixing block I is provided with two through holes, and the rotating shafts I and II are connected to the through holes of the fixing block I through bearings or sleeves, and the collecting strip is fixed on the fixing block I.

3. The material gripping structure of the cross-cutting machine according to claim 1 is characterized in that: The positioning block VI is provided with a rotating wheel V, and a guide groove is provided on the outer shell body near the belt side. When the belt rotates, the rotating wheel V moves in the guide groove.

4. The material gripping structure of the cross-cutting machine according to claim 1, characterized in that: The material-grabbing block has a U-shaped opening at one end away from the drum, and the U-shaped opening is sleeved on the power shaft II. The material-grabbing block at the U-shaped opening is provided with a guide groove, and the material-grabbing block is connected to the fixing block II through the guide groove and bolts.

5. The material gripping structure of the cross-cutting machine according to claim 1, characterized in that: The unloading block is provided with two guide grooves, and the unloading block is fixed on the shaft and the fixing rod of the outer shell through the two guide grooves and bolts.

6. The material gripping structure of the cross-cutting machine according to claim 1, characterized in that: The positioning block IV is connected to the bolt I through a spring, and the bolt I is connected to the positioning block VII. The spring tightness can be adjusted through the bolt I, thereby adjusting the gripping force of the outer claw.

7. The material gripping structure of the cross-cutting machine according to claim 1, characterized in that: The positioning block IX is connected to the bolt II through a spring, and the bolt II is connected to the positioning block VIII. The tightness of the spring can be adjusted through the bolt II, thereby adjusting the gripping force of the inner claw.

8. The material gripping structure of the cross-cutting machine according to claim 1, characterized in that: The small cam disc is formed by riveting two half-moon-shaped wheel discs, and the small cam disc is provided with a first notch and a second notch.

9. The material gripping structure of the cross-cutting machine according to claim 1 or 2, characterized in that: A plurality of strip-shaped electrostatic brushes are arranged on the outer edge of the drum.

10. The material gripping structure of the cross-cutting machine according to claim 1, characterized in that: A positioning wheel is fixed on the rotating shaft III, one end of the torsion spring is clamped on the positioning wheel, and the other end is against the lower end of the material holding bracket.

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