Automatic fixed-distance cutting device for kraft paper

Abstract

The invention discloses an automatic fixed-distance cutting device for kraft paper, which relates to the technical field of kraft paper production, and comprises a workbench and a centering device, wherein a manual cutting device is arranged on the top of the workbench, a placing frame is fixedly installed on the front side of the workbench, a servo motor is fixedly installed on the front side of the placing frame, a rotating rod is fixedly installed on the output end of the servo motor, and a chain conveyor belt is arranged on the circumferential surface of the rotating rod, wherein the centering device comprises an extrusion rod, a placing groove, a placing plate, a placing rod, a hollow rod, a guide groove, a guide rod and a centering plate, wherein the hollow rod moves in a direction close to the kraft paper to drive the centering plate to move, and the movement of the centering plate centers the kraft paper on the top of the chain conveyor belt, and the movement of the centering plate can accurately position the kraft paper in the center of the chain conveyor belt, thereby reducing the cutting error caused by the deviation of the kraft paper, thereby improving the cutting accuracy of the kraft paper.

Description

Technical Field

[0001] The invention relates to the technical field of kraft paper production, in particular to an automatic fixed-distance cutting device for kraft paper. Background Art

[0002] The automatic fixed-distance cutting device for kraft paper usually consists of a feeding device, a cutting device, a positioning device, a protective device and the like, and the automatic fixed-distance cutting device for kraft paper usually performs batch cutting on a stack of kraft paper.

[0003] The patent with the patent announcement number CN219685744U relates to an automatic cutting device for efficient production of kraft paper, and relates to the technical field of kraft paper production. The automatic cutting device for efficient production of kraft paper comprises a base, a conveyor is arranged on the top of the base, a fixed plate is fixedly connected to the top of the base, a workbench is fixedly connected to the fixed plate, an auxiliary device is arranged on the fixed plate, the auxiliary device comprises a ruler, the outer wall of the ruler is fixedly connected to the outer wall of the fixed plate, a sliding frame is slidably connected to the upper side of the fixed plate, a pointer is fixedly connected to the outer wall of the sliding frame, and a pressing and fixing device is arranged on the sliding frame. By arranging the pressing and fixing device, during the cutting process, by pushing the handle upward, the handle drives the housing to move downward through the telescopic rod, so that the housing presses and fixes the kraft paper to be cut through the pressing plates arranged on both sides, so that the kraft paper will not be offset due to the cutting force of the cutting blade.

[0004] In the above patent, by pushing the handle upward, the handle drives the outer shell to move downward through the telescopic rod, so that the outer shell presses and fixes the kraft paper to be cut through the pressing plates arranged on both sides, so as to prevent the kraft paper from being offset due to the cutting force of the cutting blade. However, it is difficult to correct the centering of the kraft paper. Poor centering of the kraft paper will cause the position of the paper to be offset during cutting, resulting in inconsistent size of the finished product, which will affect subsequent processing and use. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an automatic fixed-distance cutting device for kraft paper, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic fixed-distance cutting device for kraft paper, comprising a workbench and a centering device, wherein a manual cutting device is arranged on the top of the workbench, a placing frame is fixedly installed on the front side of the workbench, a servo motor is fixedly installed on the front side of the placing frame, a rotating rod is fixedly installed on the output end of the servo motor, and a chain conveyor belt is arranged on the circumferential surface of the rotating rod, wherein the centering device comprises an extrusion rod, a placing groove, a placing plate, a placing rod, a hollow rod, a guide groove, a guide rod and a centering plate, and the hollow rod is moved toward the direction close to the kraft paper. The movement drives the placement rod to move, and the hollow rod moves in the direction close to the kraft paper to drive the centering plate to move. The centering plate moves to center the kraft paper on the top of the chain conveyor belt. The extrusion rod is fixedly installed on the circumferential surface of the rotating rod, the placement groove is opened on the top of the workbench, the placement plate is fixedly installed on the bottom of the inner wall of the placement groove, the placement rod slides through the front and rear walls of the placement plate, the hollow rod is fixedly installed at both ends of the placement rod, the centering plate is fixedly installed on one side of the hollow rod close to the chain conveyor belt, the guide groove is opened on the right side of the centering plate, and the guide rod is rotatably installed on the inner wall of the guide groove.

[0007] According to the above technical solution, the side of the hollow rod away from the chain conveyor belt is set as an inclined surface, a No. 1 spring is arranged between the placing plate and the placing rod, and the No. 1 spring can drive the placing rod to reset, and the end of the extrusion rod away from the rotating rod is set as an arc surface.

[0008] According to the above technical solution, a clockwork spring is arranged between the guide groove and the guide rod, one end of the clockwork spring is arranged on the inner wall of the guide groove and the other end is arranged on the surface of the guide rod, and the guide rod can be driven to reset by the clockwork spring, the hollow rod is in contact with the inner wall of the placement groove, and the centering plate is in contact with the chain conveyor belt. There are two groups of extrusion rods, placement grooves, placement plates, placement rods, hollow rods, guide grooves, guide rods and centering plates, and the two centering plates are used to squeeze the kraft paper together when centering it.

[0009] According to the above technical solution, a smoothing device for preventing kraft paper from warping up is provided on the top of the workbench, and an anti-static device is provided on the top of the workbench. The smoothing device includes a support plate, a support rod, a T-shaped plate, a stabilizing groove, a stabilizing plate and a smoothing rod. The movement and reset of the T-shaped plate drives the movement and reset of the smoothing rod, and the smoothing rod smoothes the kraft paper on the top of the chain conveyor belt by reciprocating movement. The support plate is fixedly installed on the top of the workbench, and the support rod slides through the left and right walls of the support plate. The T-shaped plate is fixedly installed on one end of the support rod close to the hollow rod. The stabilizing groove is opened on the surface of the T-shaped plate, and the stabilizing plate is fixedly installed on the inner wall of the stabilizing groove. The smoothing rod is rotatably installed on the rear side of the T-shaped plate.

[0010] According to the above technical solution, a hollow ring is fixedly installed on the circumferential surface of the support rod, a linkage ring is fixedly installed on the circumferential surface of the support rod, and a No. 2 spring is arranged between the support plate and the support rod, and the No. 2 spring can drive the support rod to reset. There are two groups of support plates, support rods, T-shaped plates, stabilizing grooves and stabilizing plates.

[0011] According to the above technical scheme, the anti-static device includes a load-bearing frame, a load-bearing rod, a load-bearing plate, a limiting frame, a limiting rod, a limiting plate, a limiting hole and a conduit. The cross rubber valve is deformed to release the seal of the conduit. After the seal of the conduit is released, part of the anti-static agent inside the limiting frame is sprayed toward the kraft paper through the conduit. The load-bearing frame is fixedly installed on the top of the workbench, the load-bearing rod slides through the inner and outer walls of the load-bearing frame, the load-bearing plate is fixedly installed on one end of the load-bearing rod close to the support plate, the limiting frame is fixedly installed on the bottom of the inner wall of the load-bearing frame, the limiting plate is slidably installed on the inner wall of the limiting frame, the limiting rod is fixedly installed on the front side of the limiting plate, the limiting hole is opened on the surface of the limiting frame, and the conduit is fixedly installed on the rear side of the load-bearing frame.

[0012] According to the above technical solution, a rubber ring is arranged between the load-bearing frame and the load-bearing rod, a No. 3 spring is arranged between the load-bearing frame and the load-bearing rod, and the No. 3 spring can drive the load-bearing rod to reset. An antistatic agent is arranged inside the load-bearing frame. There are two groups of load-bearing frames, load-bearing rods, load-bearing plates, limiting frames, limiting rods, limiting plates, limiting holes and conduits, and in the other group, the limiting rod is fixedly installed on the rear side of the limiting plate, and the conduit is fixedly installed on the front side of the load-bearing frame.

[0013] According to the above technical solution, a No. 4 spring is arranged between the limiting frame and the limiting plate, and the No. 4 spring can drive the limiting plate to reset. The load-bearing plate is in contact with the linkage ring, the end of the limiting rod away from the catheter is set as an inclined surface, and a cross rubber valve is arranged inside the catheter.

[0014] The present invention provides a kraft paper automatic fixed-distance cutting device, which has the following beneficial effects:

[0015] (1) The automatic fixed-distance cutting device for kraft paper drives the centering plate to move by moving the hollow rod toward the direction of the kraft paper. The movement of the centering plate can center the kraft paper on the top of the chain conveyor belt. The movement of the centering plate can accurately position the kraft paper in the center of the chain conveyor belt, reducing the cutting error caused by the deviation of the kraft paper, thereby improving the cutting accuracy of the kraft paper. The guide rod is squeezed by the kraft paper and rotates. The guide rod rotates and reacts to the kraft paper to pull the moving kraft paper. The traction of the guide rod can maintain the stability of the kraft paper on the chain conveyor belt, further preventing the kraft paper from twisting or deviating during movement, and ensuring that it remains straight.

[0016] (2) The automatic fixed-distance cutting device for kraft paper drives the T-shaped plate to move and reset by moving the support rod, and the T-shaped plate drives the smoothing rod to move and reset. The smoothing rod reciprocates to smooth the kraft paper on the top of the chain conveyor belt. By smoothing the kraft paper, the kraft paper is kept flat, avoiding uneven cutting caused by the kraft paper curling during the cutting process, thereby ensuring the uniformity of each cut. At the same time, the vibration of the hollow ring drives the support rod and the T-shaped plate to resonate, and the vibration of the T-shaped plate drives the smoothing rod to resonate together. In the resonant state, the smoothing rod can apply pressure in a more uniform manner, ensuring that the kraft paper is uniformly smoothed during the cutting process, thereby further avoiding local curling of the kraft paper.

[0017] (3) The automatic fixed-distance cutting device for kraft paper squeezes the cross rubber valve through the antistatic agent entering the conduit. The cross rubber valve is deformed by the squeezing of the antistatic agent entering the conduit. The deformation of the cross rubber valve releases the seal of the conduit. After the seal of the conduit is released, part of the antistatic agent inside the limiting frame is sprayed onto the kraft paper through the conduit. Spraying the antistatic agent can prevent the kraft paper from sticking together due to electrostatic attraction, which helps to ensure continuous and smooth cutting. Quantitative spraying ensures that the antistatic agent is evenly distributed, preventing the kraft paper from being overly wet, thereby minimizing static electricity accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the position structure of the workbench and the manual cutting equipment of the present invention;

[0020] Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement of part A;

[0021] Figure 4 It is a schematic diagram of the placement frame and the servo motor position structure of the present invention;

[0022] Figure 5 For the present invention Figure 4 A schematic diagram of the structure of part B in the middle is enlarged;

[0023] Figure 6 This is a schematic diagram of the centering plate and the guide groove position structure of the present invention;

[0024] Figure 7 It is a schematic diagram of the internal structure of the load-bearing frame of the present invention.

[0025] In the figure: 1. workbench; 2. manual cutting equipment; 3. placement frame; 4. servo motor; 5. rotating rod; 6. chain conveyor belt; 7. extrusion rod; 8. placement groove; 9. placement plate; 10. placement rod; 11. hollow rod; 12. guide groove; 13. guide rod; 14. centering plate; 151. support plate; 152. support rod; 153. T-shaped plate; 154. stabilizing groove; 155. stabilizing plate; 156. smoothing rod; 157. hollow ring; 158. linkage ring; 161. load-bearing frame; 162. load-bearing rod; 163. load-bearing plate; 164. limiting frame; 165. limiting rod; 166. limiting plate; 167. limiting hole; 168. catheter. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 6 One embodiment of the present invention is: an automatic fixed-distance cutting device for kraft paper, comprising a workbench 1, and a centering device, wherein a manual cutting device 2 is arranged on the top of the workbench 1, a placing frame 3 is fixedly installed on the front side of the workbench 1, a servo motor 4 is fixedly installed on the front side of the placing frame 3, a rotating rod 5 is fixedly installed on the output end of the servo motor 4, and a chain conveyor belt 6 is arranged on the circumferential surface of the rotating rod 5, wherein the centering device comprises an extrusion rod 7, a placing groove 8, a placing plate 9, a placing rod 10, a hollow rod 11, a guide groove 12, a guide rod 13 and a centering plate 14, and the extrusion rod 7 is fixedly installed on the rotating rod 5 circumferential surface, the placement groove 8 is opened on the top of the workbench 1, the placement plate 9 is fixedly installed at the bottom of the inner wall of the placement groove 8, the placement rod 10 slides through the front and rear walls of the placement plate 9, the hollow rod 11 is fixedly installed at both ends of the placement rod 10, the centering plate 14 is fixedly installed on the side of the hollow rod 11 close to the chain conveyor belt 6, the guide groove 12 is opened on the right side of the centering plate 14, and the guide rod 13 is rotatably installed on the inner wall of the guide groove 12. The kraft paper can be accurately positioned in the center of the chain conveyor belt 6 by moving the centering plate 14, thereby reducing the cutting error caused by the deviation of the kraft paper, thereby improving the cutting accuracy of the kraft paper.

[0028] The side of the hollow rod 11 away from the chain conveyor belt 6 is set as an inclined surface, and a No. 1 spring is arranged between the placing plate 9 and the placing rod 10, through which the No. 1 spring can drive the placing rod 10 to reset, and the end of the squeezing rod 7 away from the rotating rod 5 is set as an arc surface. The traction effect of the guide rod 13 can maintain the stability of the kraft paper on the chain conveyor belt 6, and further prevent the kraft paper from twisting or deviating during the movement.

[0029] A clockwork spring is arranged between the guide groove 12 and the guide rod 13, one end of the clockwork spring is arranged on the inner wall of the guide groove 12 and the other end is arranged on the surface of the guide rod 13, the clockwork spring can drive the guide rod 13 to reset, the hollow rod 11 is in contact with the inner wall of the placement groove 8, and the centering plate 14 is in contact with the chain conveyor belt 6. There are two groups of extrusion rods 7, placement grooves 8, placement plates 9, placement rods 10, hollow rods 11, guide grooves 12, guide rods 13 and centering plates 14, and the two centering plates 14 are used to squeeze the kraft paper together when centering it. A support roller is rotatably installed inside the workbench 1 to support the chain conveyor belt 6.

[0030] When this embodiment is working: after the kraft paper to be cut is placed on the top of the chain conveyor 6, the servo motor 4 drives the rotating rod 5 to rotate clockwise, and the rotating rod 5 rotates clockwise to drive the chain conveyor 6 to move. The chain conveyor 6 moves and drives the kraft paper to move in the direction close to the manual cutting device 2. At the same time, the rotating rod 5 rotates clockwise to drive the squeezing rod 7 to rotate, and the squeezing rod 7 rotates to contact with the hollow rod 11 and squeezes the hollow rod 11. The hollow rod 11 is squeezed by the squeezing rod 7 and moves in the direction close to the kraft paper. The hollow rod 11 moves in the direction close to the kraft paper and drives the placement rod 10 to move. The placement rod 10 moves to squeeze the No. 1 spring. The No. 1 spring is squeezed by the placement rod 10 to produce deformation and accumulate force. At the same time, the hollow rod 11 moves in the direction close to the kraft paper and drives the centering plate 14 to move. The centering plate 14 moves to center the kraft paper on the top of the chain conveyor 6. After the squeezing rod 7 continues to rotate and disengages from the contact with the hollow rod 11, the placement rod 10 is elastically acted on the No. 1 spring. The placing rod 10 is moved downward in the direction away from the kraft paper to reset, and the placing rod 10 is moved in the direction away from the kraft paper to reset, driving the hollow rod 11 and the centering plate 14 to move and reset. At the same time, the chain conveyor belt 6 drives the kraft paper to continue to move in the direction close to the manual cutting device 2, and the kraft paper moves to contact the guide rod 13 and squeeze the guide rod 13. The guide rod 13 rotates due to the squeezing of the kraft paper, and the guide rod 13 rotates to squeeze the clockwork spring. The clockwork spring is squeezed by the guide rod 13 and deforms and accumulates force. At the same time, the guide rod 13 rotates to react on the kraft paper to pull the moving kraft paper. After the kraft paper continues to move out of contact with the guide rod 13, the guide rod 13 is reset under the elastic force of the clockwork spring. When the kraft paper moves to the bottom of the manual cutting device 2, the servo motor 4 stops operating to stop the chain conveyor belt 6. The chain conveyor belt 6 stops moving to achieve the effect of automatic spacing, and the manual cutting device 2 is manually smoothed to cut the kraft paper.

[0031] See also Figure 1-Figure 7On the basis of the above embodiment, in another embodiment of the present invention, a smoothing device for preventing kraft paper from warping is provided on the top of the workbench 1, and an anti-static device is provided on the top of the workbench 1. The smoothing device includes a support plate 151, a support rod 152, a T-shaped plate 153, a stabilizing groove 154, a stabilizing plate 155 and a smoothing rod 156. The support plate 151 is fixedly installed on the top of the workbench 1, and the support rod 152 slides through the left and right walls of the support plate 151. The T-shaped plate 153 is fixedly installed on one end of the support rod 152 close to the hollow rod 11. The stabilizing groove 154 is provided on the surface of the T-shaped plate 153, and the stabilizing plate 155 is fixedly installed on the inner wall of the stabilizing groove 154. The smoothing rod 156 is rotatably installed on the rear side of the T-shaped plate 153. The kraft paper is kept flat by smoothing it, so as to avoid uneven cutting caused by the warping of the kraft paper during the cutting process, thereby ensuring the neatness of each cutting.

[0032] A hollow ring 157 is fixedly installed on the circumferential surface of the support rod 152, and a linkage ring 158 is fixedly installed on the circumferential surface of the support rod 152. A No. 2 spring is arranged between the support plate 151 and the support rod 152, and the No. 2 spring can drive the support rod 152 to reset. There are two groups of support plates 151, support rods 152, T-shaped plates 153, stabilizing grooves 154 and stabilizing plates 155. In the resonant state, the smoothing rod 156 can apply pressure in a more uniform manner to ensure that the kraft paper is uniformly smoothed during the cutting process, thereby further avoiding local warping of the kraft paper.

[0033] The anti-static device includes a load-bearing frame 161, a load-bearing rod 162, a load-bearing plate 163, a limiting frame 164, a limiting rod 165, a limiting plate 166, a limiting hole 167 and a conduit 168. The load-bearing frame 161 is fixedly installed on the top of the workbench 1, the load-bearing rod 162 slides through the inner and outer walls of the load-bearing frame 161, the load-bearing plate 163 is fixedly installed on one end of the load-bearing rod 162 close to the support plate 151, the limiting frame 164 is fixedly installed on the bottom of the inner wall of the load-bearing frame 161, the limiting plate 166 is slidably installed on the inner wall of the limiting frame 164, the limiting rod 165 is fixedly installed on the front side of the limiting plate 166, the limiting hole 167 is opened on the surface of the limiting frame 164, and the conduit 168 is fixedly installed on the rear side of the load-bearing frame 161. Spraying an anti-static agent can prevent kraft papers from sticking together due to electrostatic attraction, which helps to ensure continuous and smooth cutting, and quantitative spraying ensures that the anti-static agent is evenly distributed to prevent the kraft paper from being excessively wet, thereby minimizing static electricity accumulation.

[0034] A rubber ring is arranged between the load-bearing frame 161 and the load-bearing rod 162, and a No. 3 spring is arranged between the load-bearing frame 161 and the load-bearing rod 162. The No. 3 spring can drive the load-bearing rod 162 to reset. An antistatic agent is arranged inside the load-bearing frame 161. There are two groups of load-bearing frames 161, load-bearing rods 162, load-bearing plates 163, limiting frames 164, limiting rods 165, limiting plates 166, limiting holes 167 and conduits 168. In the other group, the limiting rod 165 is fixedly installed on the rear side of the limiting plate 166, and the conduit 168 is fixedly installed on the front side of the load-bearing frame 161.

[0035] A No. 4 spring is arranged between the limiting frame 164 and the limiting plate 166, and the No. 4 spring can drive the limiting plate 166 to reset. The load-bearing plate 163 is in contact with the linkage ring 158, and the end of the limiting rod 165 away from the conduit 168 is set as an inclined surface, and a cross rubber valve is arranged inside the conduit 168.

[0036] When this embodiment is working: the hollow rod 11 is squeezed by the squeezing rod 7 and moves in the direction close to the kraft paper. The hollow rod 11 moves in the direction close to the kraft paper and contacts the stabilizing plate 155 and squeezes the stabilizing plate 155. The stabilizing plate 155 is squeezed by the hollow rod 11 and moves in the direction away from the placement plate 9. The stabilizing plate 155 moves in the direction away from the placement plate 9 and drives the T-shaped plate 153 to move. The movement of the T-shaped plate 153 drives the support rod 152 to move and squeeze the No. 2 spring. The No. 2 spring is squeezed by the support rod 152 to produce deformation and accumulate force. At the same time, the T-shaped plate 153 moves in the direction away from the placement plate 9 and drives the smoothing rod 156 to move. When the placement rod 10 moves in the direction away from the kraft paper and resets, driving the hollow rod 11 to move and reset, the hollow rod 11 moves away from The kraft paper moves in the direction of reset and disengages from the stabilizing plate 155. The stabilizing plate 155 disengages from the hollow rod 11, so that the support rod 152 moves and resets in the direction close to the placement plate 9 under the elastic force of the No. 2 spring. The support rod 152 moves and resets, driving the T-shaped plate 153 to move and reset. The T-shaped plate 153 moves and resets, driving the smoothing rod 156 to move and reset. The smoothing rod 156 moves back and forth to smooth the kraft paper on the top of the chain conveyor belt 6. At the same time, when the support rod 152 moves and resets in the direction close to the placement plate 9, it drives the hollow ring 157 to move. The hollow ring 157 moves and hits the support plate 151 to generate vibration. The vibration of the hollow ring 157 drives the support rod 152 and the T-shaped plate 153 to resonate. The vibration of the T-shaped plate 153 drives the smoothing rod 156 to resonate together.

[0037] The T-shaped plate 153 moves in the direction away from the placement plate 9, driving the support rod 152 to move. The support rod 152 moves and drives the linkage ring 158 to move and contact with the load-bearing plate 163 and squeeze the load-bearing plate 163. The load-bearing plate 163 is squeezed by the linkage ring 158 and moves in the direction close to the load-bearing frame 161. The load-bearing plate 163 moves in the direction close to the load-bearing frame 161 and drives the load-bearing rod 162 to move. The load-bearing rod 162 moves and contacts with the limiting rod 165 and squeezes the limiting rod 165. The limiting rod 165 is squeezed by the load-bearing rod 162 and moves in the direction close to the guide tube 168. The limiting rod 165 moves in the direction close to the guide tube 168 and drives the limiting plate 166 to move. The control plate 166 moves to break away from the contact with the limiting hole 167 and seals part of the antistatic agent inside the limiting frame 164. At the same time, the limiting plate 166 continues to move to squeeze part of the antistatic agent inside the limiting frame 164. Part of the antistatic agent inside the limiting frame 164 is squeezed by the limiting plate 166 and enters the conduit 168. The antistatic agent entering the conduit 168 squeezes the cross rubber valve. The cross rubber valve is squeezed by the antistatic agent entering the conduit 168 and deforms. The cross rubber valve is deformed to release the seal on the conduit 168. After the seal of the conduit 168 is released, part of the antistatic agent inside the limiting frame 164 is sprayed toward the kraft paper through the conduit 168.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A kraft paper automatic fixed-distance cutting device, comprising a workbench (1), characterized in that: Also included is a centering device; Wherein, a manual cutting device (2) is arranged on the top of the workbench (1), a placement frame (3) is fixedly installed on the front side of the workbench (1), a servo motor (4) is fixedly installed on the front side of the placement frame (3), a rotating rod (5) is fixedly installed on the output end of the servo motor (4), and a chain conveyor belt (6) is arranged on the circumferential surface of the rotating rod (5); The centering device comprises an extrusion rod (7), a placement groove (8), a placement plate (9), a placement rod (10), a hollow rod (11), a guide groove (12), a guide rod (13) and a centering plate (14), wherein the extrusion rod (7) is fixedly mounted on the circumferential surface of the rotating rod (5), the placement groove (8) is opened on the top of the workbench (1), the placement plate (9) is fixedly mounted on the bottom of the inner wall of the placement groove (8), the placement rod (10) slides through the front and rear walls of the placement plate (9), the hollow rod (11) is fixedly mounted on both ends of the placement rod (10), the centering plate (14) is fixedly mounted on a side of the hollow rod (11) close to the chain conveyor belt (6), the guide groove (12) is opened on the right side of the centering plate (14), and the guide rod (13) is rotatably mounted on the inner wall of the guide groove (12); Wherein, a smoothing device for preventing the kraft paper from curling up is arranged on the top of the workbench (1), and an anti-static device is arranged on the top of the workbench (1); The side of the hollow rod (11) away from the chain conveyor belt (6) is configured as an inclined surface, a No. 1 spring is provided between the placement plate (9) and the placement rod (10), and the end of the extrusion rod (7) away from the rotating rod (5) is configured as an arc surface; A spring is provided between the guide groove (12) and the guide rod (13); the hollow rod (11) contacts the inner wall of the placement groove (8); and the centering plate (14) contacts the chain conveyor belt (6); The smoothing device comprises a support plate (151), a support rod (152), a T-shaped plate (153), a stabilizing groove (154), a stabilizing plate (155) and a smoothing rod (156), wherein the support plate (151) is fixedly mounted on the top of the workbench (1), the support rod (152) slides through the left and right walls of the support plate (151), the T-shaped plate (153) is fixedly mounted on one end of the support rod (152) close to the hollow rod (11), the stabilizing groove (154) is formed on the surface of the T-shaped plate (153), the stabilizing plate (155) is fixedly mounted on the inner wall of the stabilizing groove (154), and the smoothing rod (156) is rotatably mounted on the rear side of the T-shaped plate (153); A hollow ring (157) is fixedly mounted on the circumferential surface of the support rod (152), a linkage ring (158) is fixedly mounted on the circumferential surface of the support rod (152), and a No. 2 spring is arranged between the support plate (151) and the support rod (152).

2. The automatic distance cutting device for kraft paper according to claim 1, characterized in that: The antistatic device comprises a load-bearing frame (161), a load-bearing rod (162), a load-bearing plate (163), a limiting frame (164), a limiting rod (165), a limiting plate (166), a limiting hole (167) and a conduit (168); the load-bearing frame (161) is fixedly mounted on the top of the workbench (1); the load-bearing rod (162) slides through the inner and outer walls of the load-bearing frame (161); the load-bearing plate (163) is fixedly mounted on one end of the load-bearing rod (162) close to the support plate (151); the limiting frame (164) is fixedly mounted on the bottom of the inner wall of the load-bearing frame (161); the limiting plate (166) is slidably mounted on the inner wall of the limiting frame (164); the limiting rod (165) is fixedly mounted on the front side of the limiting plate (166); the limiting hole (167) is opened on the surface of the limiting frame (164); and the conduit (168) is fixedly mounted on the rear side of the load-bearing frame (161).

3. The automatic distance cutting device for kraft paper according to claim 2, characterized in that: A rubber ring is provided between the load-bearing frame (161) and the load-bearing rod (162), a No. 3 spring is provided between the load-bearing frame (161) and the load-bearing rod (162), and an antistatic agent is provided inside the load-bearing frame (161).

4. The automatic distance cutting device for kraft paper according to claim 2, characterized in that: A No. 4 spring is arranged between the limiting frame (164) and the limiting plate (166), the load-bearing plate (163) is in contact with the linkage ring (158), one end of the limiting rod (165) away from the conduit (168) is arranged as an inclined surface, and a cross rubber valve is arranged inside the conduit (168).

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