Leather cutting device

Abstract

The utility model relates to a leather cutting device which comprises a working table, an adjusting mechanism and a cutting mechanism, the adjusting mechanism and the cutting mechanism are arranged at the two ends of the working table, the adjusting mechanism comprises a positioning roller, double screws, a moving seat and idler wheels, and the cutting mechanism comprises a fixing frame, a cutting base plate, a knife rest, a stand column, an air cylinder, a transmission mechanism, a pre-pressing plate and a buffer spring. According to the leather cutting device, leather moves to the position between the cutting base plate and the knife rest through the positioning roller, the knife rest is controlled by the air cylinder to move and cut, and the idler wheels are used for limiting transverse movement of the leather, so that the leather is always located in the center of the knife rest, and inclination of the leather is avoided; in the downward moving process of the knife rest, the pre-pressing plate preferentially tightly presses the leather, so that the leather is prevented from deviating in the cutting process, notches of the leather are neat and consistent, and the cutting precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of leather production, in particular to a leather cutting device. BACKGROUND

[0002] Leather cutting is an essential process in the production process of artificial leather. The traditional cutting equipment usually has a roller for feeding, a cutter for cutting leather, and a transmission mechanism for controlling the movement of the cutter. The leather is transported to the cutter by the roller, and the cutter is controlled by the transmission mechanism to cut, realizing the demand for automatic cutting. However, in actual production process, the cutter will drive the leather to deviate during cutting, resulting in irregular cut and low cutting precision. SUMMARY

[0003] In order to overcome the shortcomings of the background art, the utility model adopts the technical scheme of a leather cutting device, which comprises a workbench, an adjusting mechanism and a cutting mechanism arranged at both ends of the workbench. The adjusting mechanism comprises a positioning roller, a double screw, a moving seat and a roller. The moving seat is screw-connected to both sides of the double screw and arranged below the positioning roller. Rollers are rotatably connected to both ends of the moving seat and arranged on both sides of the positioning roller. The cutting mechanism comprises a fixed frame, a cutting pad, a cutter holder, a vertical column, a pneumatic cylinder, a transmission mechanism, a pre-pressing plate and a buffer spring. The fixed frame is connected with the cutting pad and the cutter holder for cutting leather. The cutter holder is slidably connected to the fixed frame through the vertical column. The top of the fixed frame is provided with the pneumatic cylinder, which is connected with the cutter holder through the transmission mechanism. The side of the cutter holder facing the cutting pad is provided with the pre-pressing plate, which is slidably connected to the cutter holder through a slide rod. The buffer spring is arranged between the pre-pressing plate and the cutter holder.

[0004] With the above technical scheme, the leather is moved to the space between the cutting pad and the cutter holder through the positioning roller, and then the cutter holder is moved and the leather is cut by the pneumatic cylinder. The roller is used to limit the transverse movement of the leather, so that the leather is always located at the center of the cutter holder, avoiding the inclination of the leather. During the downward movement of the cutter holder, the pre-pressing plate preferentially presses the leather, thereby avoiding the deviation of the leather during cutting, making the cut of the leather neat and consistent, and improving the cutting precision.

[0005] The utility model is further provided with a bearing for rotatably connecting the double screw to the workbench, and the double screw is provided with a left threaded part and a right threaded part. The moving seat is connected to the left threaded part and the right threaded part through a pair of nuts. A linear slide rail is arranged below the moving seat and connected to the workbench. A rotating bracket is arranged above the moving seat. The roller is connected to the rotating bracket.

[0006] Further, one end of the double screw is provided with a hand wheel for controlling the distance between the two moving seats.

[0007] The left-hand thread and the right-hand thread of the double screw are designed, so that when the double screw rotates, the two groups of moving seats can be controlled to move towards each other or away from each other, the distance between the two groups of rollers can be accurately adjusted, and the cutting requirement of the leather material with different widths can be met.

[0008] The utility model further provides that the workbench is provided with a cover plate for supporting the leather material above the double screw.

[0009] The cover plate is used to prevent the leather material from falling into the double screw and being polluted.

[0010] The utility model further provides that the transmission mechanism comprises a driving plate, a first driven plate, a second driven plate, a third driven plate and a clamping plate, the output end of the air cylinder is hingedly connected with the driving plate, one end of the driving plate and the first driven plate is hingedly connected to the fixed frame, the other end is hingedly connected with the tool holder through the second driven plate and the third driven plate, a first steering shaft is arranged at the connection position of the driving plate and the second driven plate, a second steering shaft is arranged at the connection position of the first driven plate and the third driven plate, and the first steering shaft and the second steering shaft are connected through the clamping plate.

[0011] The driving plate is connected with the first driven plate, the second driven plate and the third driven plate through the clamping plate, when the output end of the air cylinder moves outward, the air cylinder controls the rotation of the driving plate, the clamping plate is rotated and moved downward through the lever principle, the first driven plate is also rotated and balanced with the clamping plate at this time, the orientation of the clamping plate is always parallel to the cutting base plate, the tool holder is controlled to move downward through the second driven plate and the third driven plate, the overall transmission is stable and efficient, the tool holder is uniformly stressed in the cutting process, and vibration and error are reduced.

[0012] The utility model further provides that the tool holder is provided with a transfer plate, a side plate and a tool plate from top to bottom, the second driven plate and the third driven plate are hingedly connected to the transfer plate, the two ends of the side plate are slidably connected to the stand column through linear bearings, the pre-pressing plate is slidably connected to the side plate through a sliding rod, the buffer spring is arranged between the side plate and the pre-pressing plate, and the tool plate is used for externally connecting a blade.

[0013] Further, the bottom of the pre-pressing plate is provided with a rubber pad.

[0014] Further, the horizontal height of the pre-pressing plate is lower than that of the tool holder.

[0015] The pre-pressing plate is used to fix the position of the leather material before the blade cuts, so that the leather material is prevented from being displaced in the cutting process, the cutting edge is ensured to be neat, the pre-pressing plate can automatically adjust the pressure according to the thickness of the leather material through the design of the buffer spring and the rubber pad, the pre-pressing plate is prevented from excessively pressing the leather material, and the leather material with different thicknesses can be applied.

[0016] The utility model further illustrates the embodiment of the utility model with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the perspective view of the utility model;

[0018] Figure 2 It is the plan view of the utility model;

[0019] Figure 3 It is the Figure 1 Partial close -up view of the middle A view;

[0020] Figure 4 It is the front view of the cutting mechanism of the utility model;

[0021] Figure 5 It is the structure schematic diagram of the pre -pressing plate installation in the tool rest of the utility model;

[0022] Among them: 1 - workbench, 2 - adjusting mechanism, 3 - cutting mechanism, 4 - positioning roller, 5 - double screw, 6 - moving seat, 7 - gyro wheel, 8 - fixed frame, 9 - cutting pad, 10 - tool rest, 11 - stand, 12 - pneumatic cylinder, 13 - transmission mechanism, 14 - pre -pressing plate, 15 - buffer spring, 16 - slide rod, 18 - left screw part, 19 - right screw part, 21 - linear slide rail, 22 - rotary support, 23 - hand wheel, 24 - cover plate, 25 - driving plate, 26 - first driven plate, 27 - second driven plate, 28 - third driven plate, 29 - clamping plate, 30 - first steering shaft, 31 - second steering shaft, 32 - adapter plate, 33 - side plate, 34 - tool plate, 36 - blade, 37 - rubber pad; DETAILED DESCRIPTION

[0023] As Figure 1 Indicated, the utility model provides a kind of leather cutting device, including workbench 1, and adjusting mechanism 2 and cutting mechanism 3 located at the both ends of workbench 1, adjusting mechanism 2 includes positioning roller 4, double screw 5, moving seat 6 and gyro wheel 7, moving seat 6 is screw-connected on the both sides of double screw 5, and moving seat 6 is located below positioning roller 4, and the both ends of moving seat 6 are rotatably connected with gyro wheel 7, and gyro wheel 7 is located at the front and back of positioning roller 4;Cutting mechanism 3 includes fixed frame 8, cutting pad 9, tool rest 10, stand 11, pneumatic cylinder 12, transmission mechanism 13, pre -pressing plate 14 and buffer spring 15, and fixed frame 8 is connected with the cutting pad 9 and tool rest 10 for cutting leather, and tool rest 10 is slidably connected to fixed frame 8 by stand 11, and the top of fixed frame 8 is equipped with pneumatic cylinder 12, and pneumatic cylinder 12 is connected with tool rest 10 by transmission mechanism 13, and the side of tool rest 10 towards cutting pad 9 is equipped with pre -pressing plate 14, and pre -pressing plate 14 is slidably connected to tool rest 10 by slide rod 16, and buffer spring 15 is equipped between pre -pressing plate 14 and tool rest 10.

[0024] As shown in Figure 2 , 3 In this embodiment, the double screw 5 is rotatably connected to the workbench 1 through a bearing, and the double screw 5 is provided with a left threaded portion 18 and a right threaded portion 19. The left threaded portion 18 and the right threaded portion 19 are respectively connected with the moving seat 6 through a nut pair. The lower portion of the moving seat 6 is provided with a linear slide rail 21 connected to the workbench 1. The upper portion of the moving seat 6 is provided with a rotating bracket 22. The roller 7 is connected to the rotating bracket 22. One end of the double screw 5 is provided with a hand wheel 23 for controlling the distance between the two moving seats 6. The workbench 1 located directly above the double screw 5 is provided with a cover plate 24 for supporting the leather.

[0025] As shown in Figure 4 In this embodiment, the transmission mechanism 13 includes a driving plate 25, a first driven plate 26, a second driven plate 27, a third driven plate 28, and a clamping plate 29. The output end of the air cylinder 12 is hingedly connected with the driving plate 25. One end of the driving plate 25 and the first driven plate 26 is hingedly connected to the fixed frame 8. The other end of the driving plate 25 is hingedly connected with the tool holder 10 through the second driven plate 27 and the third driven plate 28. The connection between the driving plate 25 and the second driven plate 27 is provided with a first steering shaft 30. The connection between the first driven plate 26 and the third driven plate 28 is provided with a second steering shaft 31. The first steering shaft 30 and the second steering shaft 31 are connected through the clamping plate 29.

[0026] As shown in Figure 5 In this embodiment, the tool holder 10 is provided with a transfer plate 32, a side plate 33, and a tool plate 34 from top to bottom. The second driven plate 27 and the third driven plate 28 are hingedly connected to the transfer plate 32. The two ends of the side plate 33 are respectively connected to the vertical column 11 through linear bearings. The pre-pressing plate 14 is connected to the side plate 33 through the slide rod 16. The buffer spring 15 is arranged between the side plate 33 and the pre-pressing plate 14. The tool plate 34 is used for externally connecting the blade 36. The bottom of the pre-pressing plate 14 is provided with a rubber pad 37. The horizontal height of the pre-pressing plate 14 is lower than that of the tool holder 10.

[0027] The utility model discloses a working principle is, the hide material is moved to cutting pad 9 and tool rest 10 between through positioning roller 4, gyro wheel 7 is located positioning roller 4's front and back both sides, is used for limiting the transverse movement of hide material, ensure that hide material keeps flat in the conveying process, when cutting hide material, the output of pneumatic cylinder 12 moves outward, pushes the rotation of driving plate 25, and driving plate 25 is linked through clamping plate 29 and first driven plate 26, second driven plate 27, third driven plate 28, converts the linear motion of pneumatic cylinder 12 into the vertical motion of tool rest 10, when tool rest 10 starts to descend, pre-pressing plate 14 preferentially contacts hide material and applies pressure, and hide material is fixed on cutting pad 9, and pre-pressing plate 14 is slidably connected in tool rest 10 through slide rod 16, and through the design of buffer spring 15 and rubber pad 37, can automatically adjust pressure according to the thickness of hide material, avoid to cause excessive extrusion to hide material, and clamping plate 29 keeps balance in the transmission process, ensure that cutting edge is neat and consistent.

[0028] The above are the preferred embodiments of the present application, and do not limit the protection scope of the present application, so: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A leather cutting apparatus, characterized by, The utility model provides a cutting device for leather, including workbench (1), and the adjusting mechanism (2) and cutting mechanism (3) of workbench (1) both ends, the adjusting mechanism (2) includes positioning roller (4), double screw (5), mobile seat (6) and gyro wheel (7), mobile seat (6) is screw -threaded connection in the both sides of double screw (5), and mobile seat (6) is located below positioning roller (4), and the both ends of mobile seat (6) are rotatably connected with gyro wheel (7), and gyro wheel (7) is located in the front and back both sides of positioning roller (4), the cutting mechanism (3) includes fixed frame (8), cutting gasket (9), tool rest (10), stand (11), pneumatic cylinder (12), transmission mechanism (13), pre -pressing plate (14) and buffer spring (15), and fixed frame (8) is connected with the cutting gasket (9) for cutting skin and tool rest (10), tool rest (10) is slidably connected in fixed frame (8) through stand (11), and the top of fixed frame (8) is equipped with pneumatic cylinder (12), and pneumatic cylinder (12) is connected with tool rest (10) through transmission mechanism (13), and one side of tool rest (10) towards cutting gasket (9) is equipped with pre -pressing plate (14), and pre -pressing plate (14) is slidably connected in tool rest (10) through slide rod (16), and buffer spring (15) is equipped between pre -pressing plate (14) and tool rest (10).

2. A leather cutting apparatus as claimed in claim 1, wherein: The double screw (5) is rotatably connected to the workbench (1) through a bearing, and the double screw (5) is provided with a left threaded portion (18) and a right threaded portion (19), the left threaded portion (18) and the right threaded portion (19) are respectively connected with the mobile seat (6) through a nut pair engagement, the lower portion of the mobile seat (6) is provided with a linear slide rail (21) connected to the workbench (1), and the upper portion of the mobile seat (6) is provided with a rotating support (22), and the gyro wheel (7) is connected to the rotating support (22).

3. A leather cutting apparatus as claimed in claim 2, wherein: One end of the double screw (5) is provided with a hand wheel (23) for controlling the distance between the two mobile seats (6).

4. A leather cutting apparatus as claimed in claim 3, wherein: The workbench (1) is located directly above the double screw (5) and is provided with a cover plate (24) for supporting the leather.

5. A leather cutting apparatus as claimed in claim 1, wherein: The transmission mechanism (13) includes a driving plate (25), a first driven plate (26), a second driven plate (27), a third driven plate (28), and a clamping plate (29), the output end of the pneumatic cylinder (12) is hinged with the driving plate (25), one end of the driving plate (25) and the first driven plate (26) is hinged to the fixed frame (8), the other end is respectively hinged with the tool rest (10) through the second driven plate (27) and the third driven plate (28), a first steering shaft (30) is arranged at the connection between the driving plate (25) and the second driven plate (27), a second steering shaft (31) is arranged at the connection between the first driven plate (26) and the third driven plate (28), and the first steering shaft (30) and the second steering shaft (31) are connected through the clamping plate (29).

6. A leather cutting apparatus as claimed in claim 5, wherein: The knife holder (10) is provided with a transition plate (32), a side plate (33) and a knife plate (34) from top to bottom, the second driven plate (27) and the third driven plate (28) are hinged to the transition plate (32), the two ends of the side plate (33) are slidably connected to the stand (11) through linear bearings, the pre-pressing plate (14) is slidably connected to the side plate (33) through a slide rod (16), the buffer spring (15) is arranged between the side plate (33) and the pre-pressing plate (14), and the knife plate (34) is used for externally connecting a blade.

7. A leather cutting apparatus as claimed in claim 6, wherein: The pre-pressing plate (14) is provided with a rubber pad (37) at the bottom.

8. A leather cutting apparatus as claimed in claim 6, wherein: The horizontal height of the pre-pressing plate (14) is lower than that of the knife holder (10).

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