Knife sharpening device for cloth cutting machine

Abstract

The invention discloses a knife sharpening device for a cloth cutting machine, and relates to the technical field of clothing manufacturing equipment. The device comprises a base, a knife holder, a chassis and a knife sharpening assembly. The lower half of the knife holder penetrates the base and is rotatably connected to the base through a fixing piece. A driving wheel is sleeved on the knife holder. A driving device corresponding to the driving wheel is fixedly mounted on the base. The chassis is fixedly connected to the base through a pneumatic telescopic rod assembly. The knife sharpening assembly is embedded at the center of the top of the chassis. The knife sharpening assembly is specifically composed of a multi-action pneumatic motor and a tray. The top of the tray is movably connected to the knife holder through a connecting rod. The invention drives the knife sharpening assembly and the cutter to rotate synchronously through the driving device, and the pneumatic telescopic rod assembly drives the chassis to move, thereby achieving the purpose of effectively sharpening the knife in a working state, improving the knife sharpening efficiency, and utilizing the multi-action pneumatic motor to achieve close fitting of the grinding wheel and the cutter, thereby improving the knife sharpening quality.

Description

Technical Field

[0001] The invention relates to the technical field of clothing manufacturing equipment, in particular to a knife sharpening device for a cloth cutting machine. Background Art

[0002] At present, cloth cutting machines are widely used in the field of textile technology. They can quickly cut cloth and improve textile efficiency. During the use of traditional cloth cutting machines, it is often necessary to sharpen the cutter to improve the cutting quality and efficiency.

[0003] However, traditional cloth cutting machines mostly use a method of stopping the machine to sharpen the cutter, that is, after the cutter has worked for a period of time, the cutter is lifted and suspended, and the sharpening wheel is moved to the cutter to fit the cutter, and the sharpening wheel rotates to sharpen the cutter, or the cutter is taken down and sharpened after working for a certain period of time; some cutters need to be restored to a specific work station after running for a period of time before they can be sharpened; the traditional method of sharpening has greatly affected the working efficiency of the equipment, and the quality of sharpening is difficult to guarantee. The sharpening wheel is very likely to cause damage to the cutter body when it is close to the cutter, which increases the loss and operating cost of the cutter. In the process of disassembling the cutter, a lot of production time is wasted, which reduces production efficiency.

[0004] How to improve the defects of existing technologies is an urgent problem to be solved nowadays. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a knife sharpening device for a cloth cutting machine to solve the technical problems in the prior art that the knife sharpening quality is difficult to ensure, the knife sharpening efficiency is low and the knife body is extremely easy to be damaged.

[0006] The present invention is realized by the following technical scheme: a knife sharpening device for a cloth cutting machine, comprising a base, a knife holder, a chassis and a knife sharpening assembly, the lower half of the knife holder passes through the base and is rotatably connected to the base through a fixing member, the knife holder is provided with a driving wheel, and the driving wheel is arranged below the base, a driving device corresponding to the driving wheel is fixedly installed on the base, and the driving device is rotatably connected to the driving wheel through a transmission belt, the chassis is arranged directly below the knife holder, and the chassis is fixedly connected to the base through a pneumatic telescopic rod assembly, the knife sharpening assembly is embedded at the center of the top of the chassis, the knife sharpening assembly is specifically composed of a multi-action pneumatic motor and a tray, the multi-action pneumatic motor is specifically two, and the two multi-action pneumatic motors are symmetrically installed on the top of the tray about the center of the tray, a transmission shaft is connected to the inner side wall of the multi-action pneumatic motor, and a grinding wheel is sleeved on the transmission shaft, the top of the tray is movably connected to the knife holder through a connecting rod, and the top of the connecting rod passes through the knife holder and is arranged above the knife holder.

[0007] Furthermore, the multi-action pneumatic motor is specifically composed of a cylinder body, an end cover, a rotor, a slide and a transmission shaft. The cylinder body is provided with an eccentric hole that penetrates the cylinder body, and the top of the cylinder body is evenly provided with through holes connected to the eccentric hole, and the number of through holes is specifically two. The rotor is arranged in the inner cavity of the eccentric hole, and the rotor is evenly provided with limiting grooves corresponding to the slide, and the number of limiting grooves is specifically four. The slide is arranged in the limiting groove, and an axially extending rotating shaft is arranged at the center of the rotor. The rotating shaft is specifically a hollow structure, and both ends of the rotating shaft are arranged on the outside of the rotor, and one end of the rotating shaft is closed and the other end is open. An air hole communicating with the inner cavity of the rotating shaft is provided at the top of the closed end. There are specifically two end covers, which are fixedly mounted on the cylinder bodies corresponding to the two sides of the eccentric hole by fasteners respectively. The two ends of the rotating shaft are respectively embedded in the corresponding end covers through connecting bearings. One end of the transmission shaft is arranged in the inner cavity of the rotating shaft, and the other end passes through the open end of the rotating shaft and is arranged on the outer side of the corresponding end cover. A slide groove is provided on the shaft body of the transmission shaft arranged in the inner cavity of the rotating shaft. A limiting hole corresponding to the slide groove is provided on the rotor. A limiting member corresponding to the slide groove is provided at the bottom of the inner cavity of the limiting hole, and one end of the limiting member is arranged in the inner cavity of the slide groove.

[0008] Furthermore, a limiting column and a guide clamp are sleeved on the connecting rod, the limiting column is fixedly mounted on the top of the tray, the guide clamp is fixedly mounted on the top of the limiting column, and the guide clamp is arranged directly below the tool holder.

[0009] Furthermore, a guide device is embedded in the center of the top of the tray, and the guide device is specifically composed of a fixed frame, a roller group and an independent roller. The roller group and the independent roller are both embedded in the fixed frame, and the embedding direction of the independent roller is perpendicular to the embedding direction of the roller group.

[0010] Furthermore, a guide column is fixedly installed at the bottom of the tray, and the bottom of the guide column passes through the chassis and is on the same plane as the bottom of the chassis, an axially extending tool hole is opened at the center of the guide column, and an axially extending through hole is opened at the center of the tool holder, and the tool exit hole and the through hole are coaxially distributed.

[0011] Furthermore, the rotor and the rotating shaft are an integral structure.

[0012] Furthermore, a movable bearing is fixedly installed at the bottom of the tray 11, and the tray is rotatably connected to the chassis via the movable bearing.

[0013] Compared with the prior art, the present invention has the following advantages: the present invention provides a knife sharpening device for a cloth cutting machine, the cutting knife extends out through the through hole of the knife holder and the knife outlet hole in the guide column at the bottom of the knife sharpening assembly to perform cutting action, the cutting knife moves synchronously with the knife holder, when the driving device drives the driving wheel to rotate, the driving wheel drives the knife holder to rotate, the knife holder drives the tray and the knife sharpening assembly on the top of the tray to rotate via the connecting rod, thereby achieving the purpose of synchronous rotation of the cutting knife and the knife sharpening assembly, the pneumatic telescopic rod assembly can drive the chassis and the tray on the top of the chassis to move up and down, thereby achieving the purpose of the knife sharpening assembly being able to move up and down, and through the arrangement of the driving device, the pneumatic telescopic rod assembly, the chassis and the tray, the cutting knife and the knife sharpening assembly can move synchronously during the operation of the equipment. The multi-action pneumatic motor can cause the transmission shaft to rotate under the drive of the airflow. Because the rotating shaft in the middle of the rotor is a hollow structure with one end closed and the other end open, and an air hole is opened at the closed end, the air flow enters the inner cavity of the rotating shaft through the air hole to push the transmission shaft to move in the direction of the rotating shaft opening, and then pushes the grinding wheel at the other end of the transmission shaft to move in the direction of the cutter, until the grinding wheel and the cutter are tightly fitted and stop moving, so that the cutter can be effectively polished, and the polishing quality is improved. The cutter can still perform the knife sharpening action during the up and down movement, and the cooperation of the limiter and the slide groove can effectively prevent the transmission shaft from separating from the rotating shaft. Compared with the traditional knife sharpening method, the present invention can effectively improve the knife sharpening efficiency and knife sharpening quality, and improve the cutting efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the external structure of a knife sharpening device for a cloth cutting machine of the present invention;

[0015] Figure 2 It is an exploded schematic diagram of a multi-action pneumatic motor of a knife sharpening device for a cloth cutting machine of the present invention;

[0016] Figure 3 It is a top view of a knife sharpening device for a cloth cutting machine of the present invention;

[0017] Figure 4 It is a top view of a chassis of a knife sharpening device for a cloth cutting machine of the present invention;

[0018] Figure 5 It is a top view of a guide device of a knife sharpening device for a cloth cutting machine of the present invention;

[0019] Figure 6 The present invention is a bottom view of a tray of a knife sharpening device for a cloth cutting machine.

[0020] In the figure: 1. base; 2. tool holder; 3. chassis; 4. sharpening assembly; 5. fixing part; 6. driving wheel; 7. driving device; 8. transmission belt; 9. pneumatic telescopic rod assembly; 10. multi-action pneumatic motor; 11. tray; 12. transmission shaft; 13. grinding wheel; 14. connecting rod; 15. cylinder body; 16. end cover; 17. rotor; 18. slide; 19. eccentric hole; 20. through hole; 21. limit groove; 22. rotating shaft; 23. air hole; 24. slide groove; 25. limit hole; 26. limit piece; 27. limit column; 28. guide clamp; 29. ​​guide device; 30. fixing frame; 31. roller group; 32. independent roller; 33. guide column; 34. knife outlet hole; 35. through hole; 36. movable bearing; 37. connecting bearing. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figures 1 to 6 An embodiment of the present invention is as follows: a knife sharpening device for a cloth cutting machine comprises a base 1, a knife holder 2, a chassis 3 and a knife sharpening assembly 4, the knife holder 2 is rotatably connected to the base 1 through a fixing member 5 and its bottom is arranged at the bottom of the base 1, a driving wheel 6 is sleeved on the knife holder 2, the driving wheel 6 is arranged on the knife holder 2 of the base 1, a driving device 7 corresponding to the driving wheel 6 is fixedly installed on the base 1, the driving device 7 is rotatably connected to the driving wheel 6 through a transmission belt 8, the driving device 7 can effectively drive the driving wheel 6 to rotate, the chassis 3 is arranged directly below the knife holder 2, the chassis 3 is fixedly connected to the base 1 through a pneumatic telescopic rod assembly 9, after the pneumatic telescopic rod assembly 9 is connected to an external air pump, the chassis 3 can be driven to move up and down, and the knife sharpening assembly 4 is embedded in At the center of the top of the chassis 3, the knife sharpening assembly 4 is specifically composed of a multi-action pneumatic motor 10 and a tray 11. There are two multi-action pneumatic motors 10. The two multi-action pneumatic motors 10 are symmetrically installed in the middle of the top of the tray 11 about the center of the tray 11, leaving a gap for the cutter to pass through. A transmission shaft 12 is connected to the side wall inside the multi-action pneumatic motor 10, and a grinding wheel 13 is sleeved on the transmission shaft 12. During the operation of the multi-action pneumatic motor 10, the grinding wheel 13 is fitted with the cutter. The top of the tray 11 is movably connected to the tool holder 2 through a connecting rod 14. The top of the connecting rod 14 penetrates the tool holder 2 and is arranged above the tool holder 2, so that the tool holder 2 can drive the connecting rod 14 to rotate during the rotation process, thereby driving the knife sharpening assembly 4 to rotate as a whole;

[0023] The multi-action pneumatic motor 10 is specifically composed of a cylinder body 15, an end cover 16, a rotor 17, a slide 18 and a transmission shaft 12. The cylinder body 15 is provided with an eccentric hole 19 penetrating the cylinder body 15. The top of the cylinder body 15 is evenly provided with through holes 20 connected to the eccentric hole 19, and there are two through holes 20. The two through holes 20 can be connected to an external air pump as an air inlet and an air outlet. The rotor 17 is arranged in the inner cavity of the eccentric hole 19. The rotor 17 is evenly provided with limit grooves 21 corresponding to the slide 18, and the limit grooves 21 are specifically There are four slides 18, and the slides 18 are arranged in the limiting grooves 21. Because the inner cavity of the cylinder body 15 is an eccentric hole 19, the slides 18 at different positions can extend from the limiting grooves 21 to different lengths. The external air pump enters the eccentric hole 19 through a through hole 20, blows the slides 18, drives the rotor 17 to rotate, and after circling around the eccentric hole 19 for one circle, it is discharged through another through hole 20. The center of the rotor 17 is provided with an axially extending shaft 22, and the shaft 22 is specifically a hollow structure. Both ends of the shaft 22 are arranged on the outside of the rotor 17, and the shaft 2 2 is closed at one end and opened at the other end. The top of the closed end of the rotating shaft 22 is provided with an air hole 23 communicating with the inner cavity of the rotating shaft 22. There are two end covers 16, which are fixedly mounted on the cylinder body 15 corresponding to the two sides of the eccentric hole 19 by fasteners. After the installation is completed, the cylinder body 15 can be effectively closed. The two ends of the rotating shaft 22 are respectively embedded in the corresponding end covers 16 through the connecting bearings 37. One end of the transmission shaft 12 is arranged in the inner cavity of the rotating shaft 22, and the other end passes through the open end of the rotating shaft 22 and is arranged on the corresponding end covers 16. The outer side of the transmission shaft 12 is provided with a slide groove 24 on the shaft body in the inner cavity of the rotating shaft 22, and a limiting hole 25 corresponding to the slide groove 24 is provided on the rotor 17. A limiting member 26 corresponding to the slide groove 24 is provided at the bottom of the inner cavity of the limiting hole 25. After the airflow enters the eccentric hole 19 through the through hole 20, it enters the inner cavity of the rotating shaft 22 through the air hole 23, thereby pushing the transmission shaft 12 set in the inner cavity of the rotating shaft 22 to move, and one end of the limiting member 26 is set in the inner cavity of the slide groove 24, effectively limiting the stroke of the transmission shaft 12;

[0024] A limiting column 27 and a guide clamp 28 are sleeved on the connecting rod 14. The limiting column 27 is fixedly mounted on the top of the tray 11 and can effectively limit and guide the connecting rod 14. The guide clamp 28 is fixedly mounted on the top of the limiting column 27, and the guide clamp 28 is arranged just below the knife holder 2, and can guide and limit the cutting knife extending from the through hole 35 of the knife holder 2.

[0025] A guide device 29 is embedded at the center of the top of the tray 11. The guide device 29 is specifically composed of a fixed frame 30, a roller group 31 and an independent roller 32. The roller group 31 and the independent roller 32 are both embedded in the fixed frame 30, and the embedding direction of the independent roller 32 is perpendicular to the embedding direction of the roller group 31. When the cutter runs to the guide device 29, passes through the roller group 31, enters the guide column 33 and extends out through the cutter hole 34, the roller group 31 can effectively limit and guide the blades on both sides of the cutter, and the independent roller 32 can guide and limit the back of the cutter.

[0026] A guide post 33 is fixedly installed at the bottom of the tray 11, and the bottom of the guide post 33 passes through the bottom of the bottom plate 3 and is on the same plane as the bottom of the bottom plate 3. A knife exit hole 34 extending in the axial direction is opened at the center of the guide post 33, and a through hole 35 extending in the axial direction is opened at the center of the knife holder 2. The knife exit hole 34 and the through hole 35 are coaxially distributed, so that the cutter can effectively extend.

[0027] The rotor 17 and the rotating shaft 22 are an integrated structure, which can effectively improve the strength of the equipment;

[0028] A movable bearing 36 is fixedly installed at the bottom of the tray 11 , and the tray 11 is rotatably connected to the chassis 3 via the movable bearing 36 , thereby reducing the friction between the chassis 3 and the tray 11 .

[0029] Working principle: when the equipment is in operation, the base 1 can provide support for the entire equipment, and the cutter passes through the through hole 35 in the cutter holder 2 and the cutter outlet hole 34 in the guide column 33 in turn and then extends out to perform the cutting action. Moreover, after the pneumatic telescopic rod assembly 9 is connected to the external air pump, the telescopic movement of the pneumatic telescopic rod assembly 9 can effectively drive the chassis 3 and the tray 11 to move up and down, and the driving device 7 can effectively drive the driving wheel 6 to rotate through the transmission belt 8, and then the driving wheel 6 drives the cutter holder 2 to rotate, and the cutter holder 2 can synchronously drive the connecting rod 14 to rotate, and the bottom of the connecting rod 14 is rotatably connected to the tray 11, and then the connecting rod 14 can drive the tray 11 to rotate, and the tray 11 can drive the sharpening assembly 4 and the guide The device 29 and the guide column 33 rotate, and in this process, the limit column 27 can limit and guide the connecting rod 14, the guide clamp 28 can guide and limit the cutter, the roller group 31 and the independent roller 32 in the guide device 29 can effectively guide the bottom of the cutter again, the fixing member 5 can effectively fix the roller group 31 and the independent roller 32, and the movable bearing 36 can effectively reduce the friction between the chassis 3 and the tray 11, thereby achieving the purpose of the sharpening assembly 4 and the cutter to perform synchronous up and down and rotational movements. At the same time, the two through holes 20 on the multi-action pneumatic motor 10 are connected to the external air pump to provide power for the multi-action pneumatic motor 10. After one through hole 20 is inhaled, it can blow the setting The slide 18 on the rotor 17 in the eccentric hole 19 drives the rotor 17 to rotate. The limiting groove 21 can effectively accommodate the slide 18 and limit it. After the airflow moves one circle in the eccentric hole 19, it is discharged from the cylinder body 15 through another through hole 20. In this process, part of the airflow enters the inner cavity of the rotating shaft 22 through the air hole 23 and pushes the transmission shaft 12 to move toward the open end of the rotating shaft 22. Because one end of the limiting member 26 is arranged in the slide groove 24, the stroke of the transmission shaft 12 can be effectively limited. The limiting member 26 can be effectively installed through the limiting hole 25. When the rotor 17 and the rotating shaft 22 are an integrated structure, the strength of the equipment can be effectively improved. The two end covers 16 can effectively close the cylinder body 15 and connect the bearings. 37 can effectively reduce the friction during the rotation of the rotor 17, and can effectively drive the grinding wheel 13 to rotate during the rotation of the transmission shaft 12. When the transmission shaft 12 drives the grinding wheel 13 to move along the axial direction until the grinding wheel 13 is attached to the cutter, the movement is stopped, thereby achieving the effective fit between the grinding wheel 13 and the cutter, and the cutter can be effectively sharpened. The entire equipment achieves the purpose of synchronous movement of the sharpening component 4 and the cutter, so that the cutter can be sharpened simultaneously during the processes of cutting, lifting the knife, and lowering the knife, thereby improving the operation efficiency of the equipment. Compared with the traditional sharpening method, a lot of sharpening time is saved, and the grinding wheel 13 can better fit the cutter through the multi-action pneumatic motor 10, thereby improving the sharpening quality.

Claims

1. A knife sharpening device for a cloth cutting machine, comprising a base, a knife holder, a chassis and a knife sharpening assembly, wherein the knife holder is rotatably connected to the base through a fixing member, and the lower half of the knife holder passes through the base, a driving wheel is sleeved on the knife holder, and the driving wheel is arranged below the base, a driving device corresponding to the driving wheel is fixedly mounted on the base, and the driving device is rotatably connected to the driving wheel through a transmission belt, characterized in that: The chassis is arranged directly below the tool holder, and the chassis is fixedly connected to the base through a pneumatic telescopic rod assembly, the sharpening assembly is embedded in the center of the top of the chassis, and the sharpening assembly is specifically composed of a multi-action pneumatic motor and a tray, and there are specifically two multi-action pneumatic motors, and the two multi-action pneumatic motors are symmetrically installed on the top of the tray about the center of the tray, a transmission shaft is connected to the side wall on the inner side of the multi-action pneumatic motor, and a grinding wheel is sleeved on the transmission shaft, and the top of the tray is movably connected to the tool holder through a connecting rod, and the top of the connecting rod passes through the tool holder and is arranged above the tool holder; The multi-action pneumatic motor is specifically composed of a cylinder body, an end cover, a rotor, a slide and a transmission shaft. The cylinder body is provided with an eccentric hole that penetrates the cylinder body, and the top of the cylinder body is evenly provided with through holes connected to the eccentric hole, and the number of the through holes is specifically two. The rotor is arranged in the inner cavity of the eccentric hole, and the rotor is evenly provided with limiting grooves corresponding to the slide, and the number of the limiting grooves is specifically four. The slide is arranged in the limiting groove, and an axially extending rotating shaft is arranged at the center of the rotor. The rotating shaft is specifically a hollow structure, and both ends of the rotating shaft are arranged on the outside of the rotor, and one end of the rotating shaft is closed and the other end is open. The closure of the rotating shaft The top of the end is provided with an air hole connected with the inner cavity of the rotating shaft, and the end covers are specifically two, and the two end covers are fixedly mounted on the cylinder bodies corresponding to the two sides of the eccentric hole by fasteners, and the two ends of the rotating shaft are respectively embedded in the corresponding end covers through connecting bearings, one end of the transmission shaft is arranged in the inner cavity of the rotating shaft, and the other end passes through the open end of the rotating shaft and is arranged on the outer side of the corresponding end cover, and the shaft body of the transmission shaft arranged in the inner cavity of the rotating shaft is provided with a slide groove, and a limiting hole corresponding to the slide groove is provided on the rotor, and a limiting member corresponding to the slide groove is provided at the bottom of the inner cavity of the limiting hole, and one end of the limiting member is arranged in the inner cavity of the slide groove; The connecting rod is sleeved with a limit column and a guide clamping piece, the limit column is fixedly installed on the top of the tray, the guide clamping piece is fixedly installed on the top of the limit column, and the guide clamping piece is arranged just below the tool holder.

2. A knife sharpening device for a cloth cutting machine according to claim 1, characterized in that: A guide device is embedded at the center of the top of the tray, and the guide device is specifically composed of a fixed frame, a roller group and an independent roller. The roller group and the independent roller are both embedded in the fixed frame, and the embedding direction of the independent roller is perpendicular to the embedding direction of the roller group.

3. A knife sharpening device for a cloth cutting machine according to claim 1, characterized in that: A guide column is fixedly installed at the bottom of the tray, and the bottom of the guide column passes through the chassis and is on the same plane as the bottom of the chassis. An axially extending knife hole is opened at the center of the guide column, and an axially extending through hole is opened at the center of the tool holder. The knife exit hole and the through hole are coaxially distributed.

4. A knife sharpening device for a cloth cutting machine according to claim 1, characterized in that: The rotor and the rotating shaft are an integrated structure.

5. A knife sharpening device for a cloth cutting machine according to claim 1 or 3, characterized in that: A movable bearing is fixedly installed on the bottom of the tray, and the tray is rotatably connected to the chassis via the movable bearing.

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