Knife group structure

Abstract

The utility model relates to the technical field of paper cutting, in particular to a knife tackle structure. The knife group structure comprises a motor, a first knife roll and a second knife roll, the first knife roll and the second knife roll are oppositely arranged, and the motor drives the first knife roll and the second knife roll to rotate. The first cutter shaft adjusting seat is adjustably arranged on the first gear, and the central axis of the first gear and the central axis of the first cutter shaft adjusting seat can coincide or do not coincide, so that the first gear and the first cutter shaft can be coaxially arranged or off-axis arranged. The second cutter shaft adjusting seat is adjustably arranged on the second gear, and the central axis of the second gear and the central axis of the second cutter shaft adjusting seat can coincide or do not coincide, so that the second gear and the second cutter shaft can be coaxially arranged or off-axis arranged. Due to the fact that the first cutter shaft and the second cutter shaft can deviate towards any direction, the distance between the first cutter and the second cutter can be adjusted, the cutting quality is guaranteed, the service life of the cutters is prolonged, and production is better facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of paper cutting, in particular to a knife group structure. Background Art

[0002] Paper is typically produced in rolls, often long and wide. Therefore, it needs to be cut to meet specific requirements before use. Paper cutters are typically used for this purpose. During use, the blades wear and their outer diameter decreases, necessitating the timely adjustment of the blade spacing to ensure they can completely cut through the paper. However, some paper cutters cannot adjust the blade spacing, requiring only blade replacement, which is inconvenient for production.

[0003] For example, Chinese patent application number: CN202021526179.1 discloses a cutter roller group for a household paper processing machine, comprising a roller body, a main shaft is rotatably provided on the left side of the roller body, and a handle is rotatably provided on the upper middle end of the right side of the roller body, the handle passes through the roller body, and a driving wheel is fixedly provided on the left end of the handle, a driven wheel is rotatably provided on the side of the driving wheel, a screw is fixedly provided inside the driven wheel, a slider is slidably provided on the outside of the screw, a whetstone is fixedly provided on the upper part of the slider, a detachable fixing block is fixedly provided on the left side of the roller body, and a rotating motor is fixedly provided on the right side of the roller body, a cutter shaft is rotatably connected to the fixed block, and a sliding slot is fixedly provided at the edge of the cutter shaft, a sliding block is slidably provided inside the sliding slot, a cutting knife sleeve is fixedly provided on the outside of the sliding block, a cutting knife is fixedly provided on the outside of the cutting knife sleeve, and an observation window is fixedly provided at the center of the outer side of the roller body. The cutter roller assembly keeps the cutter blades sharp by grinding and replacing them. However, if the cutter blade diameter is worn down and the cutter spacing is not adjusted, the paper cannot be cut. The cutter blade spacing of the cutter roller assembly cannot be adjusted, which is not conducive to production. Utility Model Content

[0004] In view of this, the present invention aims to address the shortcomings of the existing technology, and its main purpose is to provide a knife group structure, which not only has adjustable cutter spacing, but is also more conducive to production and extends the service life of the cutter, thereby overcoming the shortcomings of the existing technology.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The present application provides a knife assembly structure, comprising a motor, a first knife roller, and a second knife roller; the first knife roller comprises a first knife roller frame, a first cutter, a first knife shaft, a first gear, and a first knife shaft adjustment seat; the first cutter is tilted and arranged on the first knife roller frame; the first knife shaft is arranged on the first knife shaft adjustment seat; the first knife shaft adjustment seat is adjustably arranged on the first gear, and the central axes of the first gear and the first knife shaft adjustment seat may or may not coincide;

[0007] The second knife roller includes a second knife roller frame, a second cutter, a second knife shaft, a second gear, and a second knife shaft adjustment seat; the second cutter is tilted and arranged on the second knife roller frame; the second knife shaft is arranged on the second knife shaft adjustment seat; the second knife shaft adjustment seat is adjustably arranged on the second gear, and the central axis of the second gear and the second knife shaft adjustment seat may coincide or not coincide;

[0008] The output end of the motor is provided with a third gear, and the third gear is meshed with the first gear or the second gear.

[0009] Preferably, the angle A between the center axis of the first gear and the first blade shaft adjustment seat is between 0-5°; the angle B between the center axis of the second gear and the second blade shaft adjustment seat is between 0-5°.

[0010] Preferably, the angle C between the first cutter and the horizontal line is between 0-5°, and the angle D between the second cutter and the horizontal line is between 0-5°.

[0011] Preferably, a first limit opening is provided on the first blade shaft adjustment seat, a first control seat is provided on the first gear, and a first adjustment needle is provided on the first control seat; the first control seat passes through the first limit opening, and the first adjustment needle can be stopped by the inner wall of the first limit opening;

[0012] The second blade shaft adjustment seat is provided with a second limit opening, the second gear is provided with a second control seat and a second adjustment needle is provided; the second control seat passes through the second limit opening, and the second adjustment needle can be blocked by the inner wall of the second limit opening.

[0013] Preferably, the first blade shaft adjustment seat is provided with a plurality of first mounting holes, and the first connecting member passes through the first mounting holes and is connected to the first gear;

[0014] A plurality of second mounting holes are provided on the second blade shaft adjustment seat, and the second connecting member passes through the second mounting holes and is connected to the second gear.

[0015] Preferably, the structures of the first mounting hole and the second mounting hole are one of a strip shape, a circle shape, an arc shape, and a broken line shape.

[0016] Preferably, the first gear, the second gear, and the third gear are spur gears or helical gears.

[0017] Preferably, the first knife roller and the second knife roller are arranged on a knife roller seat, and an oil spray nozzle is provided in the mounting cavity inside the knife roller seat.

[0018] Preferably, a first bearing and a first mounting seat are provided on the first cutter shaft; the first bearing is arranged in the first mounting seat; a second bearing and a second mounting seat are provided on the second cutter shaft; the second bearing is arranged in the second mounting seat; the first mounting seat and the second mounting seat are arranged on the cutter roller seat.

[0019] Preferably, a first sealing ring is provided on the first mounting seat, and a second sealing ring is provided on the second mounting seat.

[0020] The present invention has obvious advantages and beneficial effects compared with the prior art. Specifically, as can be seen from the above technical solution, the knife group structure includes a motor, a first knife roller, and a second knife roller. The first knife roller and the second knife roller are arranged opposite to each other, and the motor drives the first knife roller and the second knife roller to rotate.

[0021] Among them, the first gear obtains power from the motor to drive the first cutter shaft to rotate, thereby causing the first cutter roller to rotate. The first cutter shaft adjustment seat can be adjusted to be set on the first gear, and the central axis of the first gear and the first cutter shaft adjustment seat can overlap or not overlap, that is, the first gear and the first cutter shaft can be set coaxially or off-axis. The second gear obtains power from the motor to drive the second cutter shaft to rotate. The second cutter shaft adjustment seat can be adjusted to be set on the second gear, and the central axis of the second gear and the second cutter shaft adjustment seat can overlap or not overlap, that is, the second gear and the second cutter shaft can be set coaxially or off-axis. The first cutter shaft and the second cutter shaft can be offset in any direction, thereby adjusting the distance between the first cutter and the second cutter, extending the life of the cutter and being more conducive to production. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0023] Figure 2 It is an exploded schematic diagram of an embodiment of the present utility model.

[0024] Figure 3 It is a partial structural decomposition diagram of an embodiment of the present utility model.

[0025] Figure 4 It is an exploded schematic diagram of an embodiment of the present utility model.

[0026] Figure 5It is a side view schematic diagram of the first knife roller and the second knife roller of an embodiment of the present utility model.

[0027] Figure 6 It is a cross-sectional schematic diagram of an embodiment of the present utility model.

[0028] Figure 7 This is a front view of an embodiment of the present utility model

[0029] Description of the accompanying drawings:

[0030] 10. First cutter roller; 11. First cutter roller frame; 12. First cutter; 13. First cutter shaft; 14. First gear; 15. First bearing; 16. First mounting seat; 17. First sealing ring; 18. Third sealing ring; 110. First cutter shaft adjustment seat; 111. First limit opening; 112. First control seat; 113. First adjustment needle; 114. First connecting member; 115. First mounting hole;

[0031] 20. Second cutter roller; 21. Second cutter roller frame; 22. Second cutter; 23. Second cutter shaft; 24. Second gear; 25. Second mounting seat; 26. Second sealing ring; 27. Fourth sealing ring; 28. Second bearing; 210. Second cutter shaft adjustment seat; 211. Second limit opening; 212. Second control seat; 213. Second adjustment needle; 214. Second connecting member; 215. Second mounting hole;

[0032] 30. Motor; 31. Third gear; 32. Knife roller seat. DETAILED DESCRIPTION

[0033] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0034] Please refer to Figures 1 to 7 As shown, it shows the specific structure of the preferred embodiment of the present utility model, which is a knife group structure.

[0035] The first cutter shaft 13 can be eccentric relative to the first gear 14, and the second cutter shaft 23 can be eccentric relative to the second gear 24. By adjusting the eccentricity, the distance between the first cutter roller 10 and the second cutter roller 20 can be adjusted, thereby enabling adjustment of the distance between the first cutter 12 and the second cutter 22, ensuring paper cutting quality and extending the service life of the cutters.

[0036] The present application provides a knife assembly structure, including a motor 30, a first knife roller 10, and a second knife roller 20. The first knife roller 10 includes a first knife roller frame 11, a first cutter 12, a first knife shaft 13, a first gear 14, and a first knife shaft adjustment seat 110. The first cutter 12 is tilted and arranged on the first knife roller frame 11. The first knife shaft 13 is arranged on the first knife shaft adjustment seat 110. The first knife shaft adjustment seat 110 is adjustable and arranged on the first gear 14, and the center axes of the first gear 14 and the first knife shaft adjustment seat 110 may or may not coincide. The first cutter 12 is tilted and arranged on the first knife roller frame 11, and the first cutter 12 is slightly tilted relative to the horizontal plane, which can reduce wear on the first cutter 12. The first knife shaft 13 passes through the first knife roller frame 11, and the first gear 14 and the first knife shaft adjustment seat 110 are arranged at both ends of the first knife shaft 13. The first gear 14 and the first knife shaft adjustment seat 110 can be arranged concentrically or eccentrically. When the first cutter shaft 13 is adjusted toward the second cutter roller 20, the distance between the first cutter 12 and the second cutter 22 can be reduced, thereby extending the service life of the first cutter 12 and the second cutter 22, ensuring that the paper is completely cut through, which is conducive to ensuring continuous production.

[0037] The second blade roller 20 includes a second blade roller frame 21, a second cutter 22, a second blade shaft 23, a second gear 24, and a second blade shaft adjustment seat 210. The second cutter 22 is tilted and arranged on the second blade roller frame 21. The second blade shaft 23 is arranged on the second blade shaft adjustment seat 210. The second blade shaft adjustment seat 210 is adjustably arranged on the second gear 24, and the central axes of the second gear 24 and the second blade shaft adjustment seat 210 may or may not coincide. The second cutter 22 is tilted and arranged on the second blade roller frame 21, and the second cutter 22 is slightly tilted relative to the horizontal plane, which can reduce wear on the second cutter 22. The second blade shaft 23 passes through the second blade roller frame 21, and the second gear 24 and the second blade shaft adjustment seat 210 are arranged at both ends of the second blade shaft 23. The second gear 24 and the second blade shaft adjustment seat 210 can be arranged concentrically or eccentrically. When the second blade shaft 23 is adjusted toward the first blade roller 10, the distance between the second blade 22 and the first blade 12 is reduced, thereby extending the service life of the first blade 12 and the second blade 22, ensuring paper cutting, and facilitating continuous production. During adjustment, the first blade roller 10 is offset toward the second blade roller 20, or the second blade roller 20 is offset toward the first blade roller 10, or the first blade roller 10 and the second blade roller 20 are offset toward each other.

[0038] The output end of the motor 30 is provided with a third gear 31, which meshes with the first gear 14 or the second gear 24. The motor 30 can be a servo motor 30, a stepper motor 30, an asynchronous motor 30, or any other commercially available motor 30. The power of the motor 30 is transmitted to the first gear 14 and the second gear 24 via the third gear 31. The first gear 14 drives the first cutter shaft adjustment seat 110 to rotate, which in turn rotates the first cutter shaft 13, thereby enabling the first cutter roller 10 to rotate. The second gear 24 drives the second cutter shaft adjustment seat 210 to rotate, which in turn rotates the second cutter shaft 23, thereby enabling the second cutter roller 20 to rotate. Because the third gear 31 provided at the output end of the motor 30 drives the first cutter roller 10 and the second cutter roller 20 to rotate synchronously, the first cutter 12 and the second cutter 22 can precisely coordinate and cut the paper. In this embodiment, the third gear 31 meshes with the second gear 24, which in turn meshes with the first gear 14, and the third gear 31 drives the first gear 14 and the second gear 24 to rotate synchronously.

[0039] Preferably, the angle A between the central axis of the first gear 14 and the first blade shaft adjustment seat 110 is between 0-5°; the angle B between the central axis of the second gear 24 and the second blade shaft adjustment seat 210 is between 0-5°. The angles of angle A and angle B can be any value between 0-5 degrees. In this embodiment, the angles of angle A and angle B are 2° or 3 degrees. The center line connecting the two first blade shaft adjustment seats 110 is L1, the center line connecting the two and the first gear 14 is L2, and the angle A is between the line connecting the center of one first gear 14 and the center of the opposite first blade shaft adjustment seat 110 and the horizontal line. The center line connecting the two second blade shaft adjustment seats 210 is L3, the center line connecting the two first gears 14 is L4, and the angle B is between the line connecting the center of one second gear 24 and the center of the opposite second blade shaft adjustment seat 210 and the horizontal line. The first blade shaft 13 and the first gear 14 have different central axes, and the second blade shaft 23 and the second gear 24 have different central axes, so that the first blade roller 10 and the second blade roller 20 can be moved away from or closer to each other. This adjustment method is very convenient and efficient.

[0040] Preferably, the angle C between the first cutter 12 and the horizontal is between 0-5°, and the angle D between the second cutter 22 and the horizontal is between 0-5°. The first cutter 12 and the second cutter 22 are both inclined, which can reduce the force on the first cutter 12 and the second cutter 22, reduce wear on the first cutter 12 and the second cutter 22, and increase the service life of the cutters. The first cutter 12 and the second cutter 22 close together to cut the paper.

[0041] Preferably, the first blade shaft adjustment seat 110 is provided with a first limiting opening 111, and the first gear 14 is provided with a first control seat 12 and a first adjustment pin 113. The first control seat 12 is inserted into the first limiting opening 111, and the first adjustment pin 113 is stopped by the inner wall of the first limiting opening 111. By loosening the first connecting member 114, the first blade shaft adjustment seat 110 can move relative to the first gear 14 a certain distance. In this way, the first blade shaft 13 and the first gear 14 are no longer coaxial, thereby allowing the first blade roller 10 to move closer to or further away from the second blade roller 20. The first adjustment pin 113 on the first control seat 12 and the first limiting opening 111 work together to control the amount of eccentricity and achieve control of eccentricity accuracy.

[0042] The second blade shaft adjustment seat 210 is provided with a second stopper 211, and the second gear 24 is provided with a second control seat 212, which is provided with a second adjustment pin 213. The second control seat 212 passes through the second stopper 211, and the second adjustment pin 213 is stopped by the inner wall of the second stopper 211. By loosening the second connecting member 214, the second blade shaft adjustment seat 210 can move relative to the second gear 24 a certain distance. This decouples the second blade shaft 23 and the second gear 24 from being coaxial, allowing the second blade roller 20 to move closer to or further away from the first blade roller 10. The second adjustment pin 213 on the second control seat 212 and the second stopper 211 work together to control the amount of eccentricity, thereby achieving control of eccentricity accuracy.

[0043] Preferably, the first blade shaft adjustment seat 110 is provided with a plurality of first mounting holes 115, and the first connecting member 114 passes through the first mounting holes 115 and is connected to the first gear 14; the second blade shaft adjustment seat 210 is provided with a plurality of second mounting holes 215, and the second connecting member 214 passes through the second mounting holes 215 and is connected to the second gear 24. The first connecting member 114 and the second connecting member 214 are preferably screws. The first connecting member 114 passes through the first mounting hole 115 and is then tightened on the first gear 14, thereby connecting the first gear 14 and the first blade shaft adjustment seat 110 together. The second connecting member 214 passes through the second mounting hole 215 and is then tightened on the second gear 24, thereby connecting the second gear 24 and the second blade shaft adjustment seat 210 together. This assembly and eccentric adjustment method is very convenient and quick.

[0044] Preferably, the first mounting hole 115 and the second mounting hole 215 are in one of the following shapes: an elongated strip, a circular shape, an arc shape, or a broken line shape. In this embodiment, the first mounting hole 115 and the second mounting hole 215 are in the shape of an elongated strip. Therefore, after loosening the first connecting member 114 and the second connecting member 214, the first gear 14 and the first blade shaft adjustment seat 110 can be adjusted eccentrically relative to each other, and the second gear 24 and the second blade shaft adjustment seat 210 can be adjusted eccentrically relative to each other.

[0045] Preferably, the first gear 14, the second gear 24, and the third gear 31 are spur gears or helical gears. In this embodiment, the first gear 14, the second gear 24, and the third gear 31 are helical gears, which can reduce impact and increase the life of the equipment.

[0046] Preferably, the first and second blade rollers 10 and 20 are mounted on a blade roller seat 32, and an oil spray nozzle is provided within the mounting cavity within the blade roller seat 32. The first and second blade rollers 10 and 20 are mounted and rotatable within the blade roller seat 32. The oil spray nozzle within the mounting cavity sprays lubricating oil onto the first, second, and third gears 14, 24, and 31, thereby cooling the gears and reducing friction. The lubricating oil within the mounting cavity is circulated, ensuring high utilization efficiency.

[0047] Preferably, the first blade shaft 13 is provided with a first bearing 15 and a first mounting seat 16; the first bearing 15 is disposed within the first mounting seat 16; the second blade shaft 23 is provided with a second bearing 28 and a second mounting seat 25; the second bearing 28 is disposed within the second mounting seat 25; and the first mounting seat 16 and the second mounting seat 25 are disposed on a blade roller seat 32. A first sealing ring 17 is mounted on the first mounting seat 16 to improve the sealing between the first mounting seat 16 and the blade roller seat 32. A second sealing ring 26 is mounted on the second mounting seat 25 to improve the sealing between the second mounting seat 25 and the blade roller seat 32. A third sealing ring 18 is mounted on the first bearing 15 to improve the sealing between the first mounting seat 16 and the first bearing 15. A fourth sealing ring 27 is mounted on the second bearing 28 to improve the sealing between the second mounting seat 25 and the second bearing 28.

[0048] In summary, the design focus of the present invention is that the first blade shaft adjustment seat 110 can be adjustably set on the first gear 14, and the first gear 14 and the first blade shaft adjustment seat 110 can be relatively concentric or eccentric, so that the first gear 14 and the first blade shaft 13 can be coaxially set or eccentrically set. The second blade shaft adjustment seat 210 can be adjustably set on the second gear 24, and the second gear 24 and the second blade shaft adjustment seat 210 can be concentrically or eccentrically set, so that the first gear 14 and the first blade shaft 13 can be coaxially set or eccentrically set. Since the first blade shaft 13 and the second blade shaft 23 can be offset in any direction, the distance between the first cutter 12 and the second cutter 22 can be directly adjusted to ensure that the cutter cuts through the paper, extend the life of the cutter, and be more conducive to production.

[0049] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A knife set structure, characterized in that: It includes a motor, a first knife roller and a second knife roller; The first knife roller comprises a first knife roller frame, a first cutter, a first knife shaft, a first gear, and a first knife shaft adjustment seat; the first cutter is tiltedly arranged on the first knife roller frame; the first knife shaft is arranged on the first knife shaft adjustment seat; the first knife shaft adjustment seat can be adjustably arranged on the first gear, and the central axes of the first gear and the first knife shaft adjustment seat can overlap or not overlap; The second knife roller comprises a second knife roller frame, a second cutter, a second knife shaft, a second gear, and a second knife shaft adjustment seat; the second cutter is tiltedly arranged on the second knife roller frame; the second knife shaft is arranged on the second knife shaft adjustment seat; the second knife shaft adjustment seat can be adjustably arranged on the second gear, and the central axis of the second gear and the second knife shaft adjustment seat can overlap or not overlap; The output end of the motor is provided with a third gear, and the third gear is meshed with the first gear or the second gear.

2. A knife assembly structure according to claim 1, characterized in that: An included angle A between the center axis of the first gear and the first tool shaft adjustment seat is between 0-5°; an included angle B between the center axis of the second gear and the second tool shaft adjustment seat is between 0-5°.

3. A knife assembly structure according to claim 1 or 2, characterized in that: An included angle C between the first cutter and the horizontal line is between 0-5°, and an included angle D between the second cutter and the horizontal line is between 0-5°.

4. The knife assembly structure according to claim 1, characterized in that: The first blade shaft adjustment seat is provided with a first limit opening, the first gear is provided with a first control seat and a first adjustment needle is provided on the first gear; the first control seat passes through the first limit opening, and the first adjustment needle can be stopped by the inner wall of the first limit opening; The second knife shaft adjustment seat is provided with a second limit opening, the second gear is provided with a second control seat and a second adjustment needle is provided on the second gear; the second control seat passes through the second limit opening, and the second adjustment needle can be stopped by the inner wall of the second limit opening.

5. The knife assembly structure according to claim 1, characterized in that: The first blade shaft adjustment seat is provided with a plurality of first mounting holes, and the first connecting member passes through the first mounting holes and is connected to the first gear; A plurality of second mounting holes are arranged on the second knife shaft adjustment seat, and the second connecting member passes through the second mounting holes and is connected to the second gear.

6. A knife assembly structure according to claim 5, characterized in that: The structures of the first mounting hole and the second mounting hole are one of a strip shape, a circle shape, an arc shape, and a broken line shape.

7. The knife assembly structure according to claim 1, characterized in that: The first gear, the second gear and the third gear are spur gears or helical gears.

8. The knife assembly structure according to claim 1, characterized in that: The first knife roller and the second knife roller are arranged on a knife roller seat, and an oil spray nozzle is arranged in the mounting cavity inside the knife roller seat.

9. A knife assembly structure according to claim 8, characterized in that: The first blade shaft is provided with a first bearing and a first mounting seat; the first bearing is arranged in the first mounting seat; The second knife shaft is provided with a second bearing and a second mounting seat; the second bearing is arranged in the second mounting seat; the first mounting seat and the second mounting seat are arranged on the knife roller seat.

10. The knife assembly structure according to claim 9, characterized in that: The first mounting seat is sleeved with a first sealing ring, and the second mounting seat is sleeved with a second sealing ring.

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