Double-machine-head continuous cutting equipment applied to leather production and working method of double-machine-head continuous cutting equipment

Abstract

The invention discloses double-machine-head continuous cutting equipment applied to leather production and a working method of the double-machine-head continuous cutting equipment, and belongs to the technical field of leather production. The double-machine-head continuous cutting equipment applied to leather production comprises a cutting table, supporting blocks are welded to the periphery of the top end face of the cutting table, vertical pipes are welded to the top end faces of the supporting blocks, a top plate is arranged above the top of the cutting table, and the bottom end face of the top plate is fixedly welded to one ends of the tops of the vertical pipes; a sliding opening is formed in the outer wall of one side of the vertical pipe, a sliding block is slidably installed in the vertical pipe, one end of the sliding block penetrates through the sliding opening, supports are connected to the periphery of the top end face of the top plate in a threaded mode, and first motors are connected to the supports in a threaded mode. According to the leather cutting device, the problems that when leather is cut in the prior art, a fixing assembly for the leather is lacked, so that the leather is prone to displacement or sliding due to the cutting force of a cutter in the cutting process, and cutting lines are inaccurate or deviate from the design contour are effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of leather production, and particularly relates to a double-head continuous cutting device for leather production and its working method. Background Art

[0002] Leather is the skin of animals that has been processed physically and chemically such as dehairing and tanning, and has the characteristic of being not easily perishable. It is composed of natural protein fibers tightly woven in three-dimensional space, with a special grain layer on the surface, presenting natural grain patterns and luster, and feeling comfortable. Leather is widely used in making products such as leather shoes, leather suitcases, and leather boxes, and is favored for its flexibility and breathability. During the leather production process, cutting equipment is needed to trim the leather, which can remove excess materials, ensure that the edges are neat and smooth, and meet the design requirements. This not only improves the overall quality of the product but also avoids defects caused by improper edge treatment.

[0003] When the existing leather cutting machines cut leather, there is a lack of a fixing component for the leather, resulting in the leather being prone to displacement or sliding due to the cutting force of the tool during the cutting process, leading to inaccurate cutting lines or deviation from the design contour; most of the cutting equipment uses blades to cut the leather, but during the cutting process, due to the friction between the blade and the leather, heat will be generated on the blade. The overheating of the blade will cause its hardness to decrease, making it prone to vibration and deformation, thus making the cutting edge rough and uneven, affecting the aesthetics and precision of the leather product. High temperature may also cause local softening or deformation of the leather material. Therefore, it is very necessary to design a double-head continuous cutting device for leather production and its working method. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that in the existing design, when cutting leather, there is a lack of a fixing component for the leather, resulting in the leather being prone to displacement or sliding due to the cutting force of the tool during the cutting process, leading to inaccurate cutting lines or deviation from the design contour.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions: A double-head continuous cutting device applied to leather production, including a cutting table. Support blocks are welded around the top end face of the cutting table, and vertical pipes are welded to the top end faces of the support blocks. Above the top of the cutting table, there is a top plate, and the bottom end face of the top plate is welded and fixed to the top end of the vertical pipe. A sliding opening is provided on the outer wall of one side of the vertical pipe. A slider is slidably installed inside the vertical pipe, and one end of the slider penetrates through the sliding opening. Support brackets are screwed around the top end face of the top plate, and first motors are screwed on the support brackets. A second screw rod is provided inside the vertical pipe, and the top end of the second screw rod is connected to the output end of the first motor through a coupling. The second screw rod is threadedly connected to the slider. One end of the slider is welded with a support rod. Below the bottom of the top plate, there is a movable frame, and the other end of the support rod is screwed and fixed to the outer wall of the movable frame. Movable grooves are provided on both sides of the bottom of the movable frame, and first screw rods are inserted into the movable grooves. Second motors are screwed on both sides of the movable frame, and the output ends of the two second motors are respectively connected to one end of the two first screw rods through couplings. Knife holders are installed on the first screw rods through threads, and blades are provided in the center of the knife holders. Side plates are welded on the outer walls of both sides of the knife holders, and first spring rods are screwed to the bottom end faces of the side plates. The telescopic ends of the first spring rods are screwed with pressing frames. A second spring rod is screwed to the bottom end face of the slider, and the telescopic end of the second spring rod is screwed with a pressing roller.

[0006] Preferably, cutting edges are provided on both the top and bottom of the blade. A third motor is screwed to the outer wall of one side of the knife holder, and the output end of the third motor penetrates through the knife holder and is screwed and fixed to the center of the blade.

[0007] Preferably, the first motor, the second motor, and the third motor are all stepping motors. The pressing roller is made of rubber material, the pressing frame is made of stainless steel material, and the bottom of the pressing frame is smooth.

[0008] Preferably, a backing plate is screwed to the top end face of the cutting table, and the backing plate is made of stainless steel material. A controller is screwed to the bottom end face of the cutting table.

[0009] Preferably, a cooling box is screwed to the top end face of the top plate. A heat conduction frame is screwed to one end of the top of the cooling box. A heat dissipation fan is screwed to the top of the heat conduction frame. A semiconductor refrigerating sheet is glued to the bottom of the heat conduction frame. A cooling frame is screwed to the bottom of the heat conduction frame, and the cooling frame is attached to the outer wall of the semiconductor refrigerating sheet. An air outlet is provided on one side of the cooling box, and an exhaust fan is screwed at the air outlet. A corrugated expansion pipe is sleeved on the output end of the exhaust fan. A cold air pipe is provided on one side of the movable frame, and the other end of the corrugated expansion pipe is inserted and communicated with the top end of the cold air pipe. A pair of connecting rods are screwed to the outer wall of one side of the movable frame, and the other ends of the connecting rods are screwed to the cold air pipe.

[0010] Preferably, a fan blade is inserted into the inside of the cooling box. A motor is screwed to an outer wall of one side of the cooling box, and an output end of the motor is fixedly welded to one end of the fan blade. The inner wall of the cooling box is composed of a heat-insulating foam board.

[0011] Preferably, first limiting frames are screwed to outer walls of both ends of the cutting table. Moving grooves are formed in outer walls of both ends of the cutting table, and hand-tightening screws are inserted into the moving grooves. A second limiting frame is mounted on the hand-tightening screws through threads. A conveying roller is inserted into the first limiting frame, and the other end of the conveying roller is inserted and mounted on the second limiting frame.

[0012] A working method of a double-head continuous cutting device applied to leather production includes the following steps. S1: Leather fixation. By winding the leather around one conveying roller and pulling out one end of the leather to wind it around the other conveying roller, start the four first motors to run synchronously through the controller. By the forward and reverse rotation of the second screw, the slider can move up and down at the sliding opening. When the slider moves down, it will drive the second spring rod and the pressing roller to move down. By using the pressing roller to press the leather, the leather can be fixed, which is beneficial for the leather to closely adhere to the backing plate during the cutting process. At the same time, under the action of the second spring rod, the pressing and fixing effect of the pressing roller on the leather can be improved. S2: Leather cutting. During the downward movement of the slider, the supporting rod can drive the movable frame to move downward until the blade pierces the leather. The pressing frame is pushed by the first spring rod to press both sides of the position where the blade pierces the leather to ensure the flatness of the leather during cutting. By driving the other conveying roller to wind up through an external motor, the leather can be pulled to move, so that the blade continuously cuts the leather. By driving the first screw by the second motor, the tool holder can move in the movable groove, thereby adjusting the cutting position to facilitate the use of leathers of different widths.

[0013] S3: Blade cooling. By driving the blade to rotate through the third motor and swapping the positions of the two cutting edges, the semiconductor refrigeration sheet is energized for heat exchange to generate a low temperature at the cooling frame, thereby reducing the temperature inside the cooling box. The heat generated by the heat exchange can be discharged by using the heat conducting frame and the heat dissipation fan. By using the exhaust fan to suck air, the cold air can pass through the air outlet and enter the corrugated telescopic tube. Under the guidance of the corrugated telescopic tube, the cold air will enter the cold air duct and be discharged externally. The cold air can quickly cool the cutting edge located at the top of the blade to ensure that the blade can continuously work. By driving the fan blade to rotate by the motor, the cold air inside the cooling box can be dispersed more evenly.

[0014] S4: End of work. By rotating the hand-tightening screw to move the second limiting frame in the moving groove until the conveying roller is separated from the second limiting frame. At this time, the staff can lift the conveying roller and remove it from the first limiting frame.

[0015] Compared with the prior art, the present invention provides a double-head continuous cutting device for leather production and its working method, having the following beneficial effects: 1. The present invention starts the synchronous operation of four first motors through a controller. By the forward and reverse rotation of the second screw rod, the slider can move up and down at the sliding opening. When the slider moves down, it drives the second spring rod and the pressing roller to move down. By pressing the leather with the pressing roller, the leather can be fixed, which is beneficial for the leather to closely adhere to the backing plate during the cutting process. At the same time, under the action of the second spring rod, the pressing and fixing effect of the pressing roller on the leather can be improved. By pressing the leather during the cutting process, it can be avoided that the leather is displaced or slides due to the cutting force of the tool, resulting in inaccurate cutting lines or deviation from the designed contour, improving the cutting accuracy. Through the support rod, during the downward movement of the slider, the movable frame can be driven to move downward until the blade pierces the leather. By using the first spring rod to push the pressing frame, the two sides of the position where the blade pierces the leather can be pressed to ensure the flatness of the leather during cutting. By winding and moving the leather, the blade continuously cuts the leather. By driving the first screw rod with the second motor, the tool holder can move in the movable groove, thereby adjusting the cutting position to facilitate the use of leathers with different widths. The setting of double blades can cut both sides of the leather synchronously, improving the working efficiency.

[0016] 2. By driving the blade with the third motor, the blade can be rotated and the positions of the two cutting edges can be swapped. By energizing the semiconductor refrigerating sheet, heat exchange can be carried out to generate low temperature at the cooling frame, thereby reducing the temperature in the cooling box. By using the heat conducting frame and the heat dissipation fan, the high temperature generated by the heat exchange can be discharged. By using the exhaust fan to suck air, the cold air can pass through the air outlet and enter the corrugated expansion pipe. Under the guidance of the corrugated expansion pipe, the cold air will enter the cold air pipe and be discharged externally. By using the cold air, the cutting edge at the top of the blade can be quickly cooled to ensure that the blade can continuously work. By driving the fan blade to rotate with the motor, the cold air in the cooling box can be more evenly dispersed. By this method, it can be avoided that the blade becomes overheated, resulting in a decrease in its hardness, and then vibration and deformation occur, preventing the cutting edge from becoming rough and uneven, affecting the aesthetics and accuracy of leather products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An overall isometric view of a double-head continuous cutting device for leather production proposed by the present invention; Figure 2 An overall structural schematic diagram of a double-head continuous cutting device for leather production proposed by the present invention; Figure 3 A bottom structural schematic diagram of a double-head continuous cutting device for leather production proposed by the present invention; Figure 4The overall vertical sectional view of a double-head continuous cutting device for leather production proposed by the present invention; Figure 5 The overall horizontal sectional view of a double-head continuous cutting device for leather production proposed by the present invention; Figure 6 The overall side view of a double-head continuous cutting device for leather production proposed by the present invention.

[0018] Description of figure numbers: 1. Cutting table; 2. Support block; 3. Vertical pipe; 4. Top plate; 5. Slide opening; 6. Slide block; 7. Support; 8. First motor; 9. Support rod; 10. Movable frame; 11. Movable groove; 12. First screw; 13. Second motor; 14. Tool rest; 15. Blade; 16. Third motor; 17. Side plate; 18. First spring rod; 19. Pressing frame; 20. Second spring rod; 21. Pressing roller; 22. Pad; 23. Controller; 24. Cooling box; 25. Heat conducting frame; 26. Heat dissipation fan; 27. Semiconductor refrigeration sheet; 28. Cooling frame; 29. Air outlet; 30. Exhaust fan; 31. Corrugated expansion pipe; 32. Cold air pipe; 33. Connecting rod; 34. Fan blade; 35. Motor; 36. First limit frame; 37. Moving groove; 38. Hand-tightening screw; 39. Second limit frame; 40. Conveyor roller; 41. Second screw. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Embodiment 1: Please refer to Figure 1-6, A double-head continuous cutting device applied to leather production, including a cutting table 1. Support blocks 2 are welded around the top end face of the cutting table 1, and a vertical pipe 3 is welded to the top end face of the support block 2. Above the top of the cutting table 1 is a top plate 4, and the bottom end face of the top plate 4 is welded and fixed to the top end of the vertical pipe 3. A sliding opening 5 is formed on the outer wall of one side of the vertical pipe 3. A slider 6 is slidably installed inside the vertical pipe 3, and one end of the slider 6 penetrates through the sliding opening 5. Support brackets 7 are screwed around the top end face of the top plate 4, and a first motor 8 is screwed on the support bracket 7. A second screw rod 41 is arranged inside the vertical pipe 3, and the top end of the second screw rod 41 is connected to the output end of the first motor 8 through a coupling. The second screw rod 41 is threadedly connected to the slider 6. One end of the slider 6 is welded with a support rod 9. Below the bottom of the top plate 4 is a movable frame 10, and the other end of the support rod 9 is screwed and fixed to the outer wall of the movable frame 10. Movable grooves 11 are formed on both sides of the bottom of the movable frame 10, and a first screw rod 12 is inserted into the movable grooves 11. Second motors 13 are screwed on both sides of the movable frame 10, and the output ends of the two second motors 13 are respectively connected to one end of the two first screw rods 12 through couplings. A tool holder 14 is installed on the first screw rod 12 through threads, and a blade 15 is arranged in the center of the tool holder 14. Side plates 17 are welded on the outer walls of both sides of the tool holder 14, and a first spring rod 18 is screwed to the bottom end face of the side plate 17. The telescopic end of the first spring rod 18 is screwed with a pressing frame 19. A second spring rod 20 is screwed to the bottom end face of the slider 6, and the telescopic end of the second spring rod 20 is screwed with a pressing roller 21. Cutting edges are formed on both the top and bottom of the blade 15. A third motor 16 is screwed to the outer wall of one side of the tool holder 14, and the output end of the third motor 16 penetrates through the tool holder 14 and is screwed and fixed to the center of the blade 15. The first motor 8, the second motor 13, and the third motor 16 are all stepper motors. The pressing roller 21 is made of rubber material, the pressing frame 19 is made of stainless steel material, and the bottom of the pressing frame 19 is smooth. A backing plate 22 is screwed to the top end face of the cutting table 1, and the backing plate 22 is made of stainless steel material. A controller 23 is screwed to the bottom end face of the cutting table 1; The controller 23 starts the synchronous operation of the four first motors 8. By the forward and reverse rotation of the second screw rod 41, the slider 6 can move up and down at the sliding opening 5. When the slider 6 moves downward, it drives the second spring rod 20 and the pressing roller 21 to move downward. By using the pressing roller 21 to press the leather, the leather can be fixed, which is beneficial to keep the leather close to the backing plate 22 during the cutting process. At the same time, under the action of the second spring rod 20, the pressing and fixing effect of the pressing roller 21 on the leather can be improved. During the downward movement of the slider 6, the support rod 9 can drive the movable frame 10 to move downward until the blade 15 pierces the leather. By using the first spring rod 18 to push the pressing frame 19, the two sides of the piercing position of the blade 15 can be pressed to ensure the flatness of the leather during cutting. By winding and moving the leather, the blade 15 continuously cuts the leather. By driving the first screw rod 12 with the second motor 13, the tool holder 14 can move in the movable groove 11, thereby adjusting the cutting position to facilitate the use of leather with different widths.

[0020] Embodiment 2: Please refer to Figure 1-6 Based on Embodiment 1, the difference lies in that a cooling box 24 is screwed to the top end face of the top plate 4, and a heat conduction frame 25 is screwed to one end of the top of the cooling box 24. A heat dissipation fan 26 is screwed to the top of the heat conduction frame 25. A semiconductor refrigeration chip 27 is glued to the bottom of the heat conduction frame 25. A cooling frame 28 is screwed to the bottom of the heat conduction frame 25, and the cooling frame 28 is in contact with the outer wall of the semiconductor refrigeration chip 27. An air outlet 29 is opened on one side of the cooling box 24, and an exhaust fan 30 is screwed at the air outlet 29. A corrugated expansion pipe 31 is sleeved on the output end of the exhaust fan 30. A cold air pipe 32 is arranged on one side of the movable frame 10, and the other end of the corrugated expansion pipe 31 is inserted and communicated with the top end of the cold air pipe 32. A pair of connecting rods 33 are screwed to the outer wall of one side of the movable frame 10, and the other ends of the connecting rods 33 are fixedly screwed to the cold air pipe 32. A fan blade 34 is inserted into the cooling box 24. A motor 35 is screwed to the outer wall of one side of the cooling box 24, and the output end of the motor 35 is welded to one end of the fan blade 34. The inner wall of the cooling box 24 is composed of a heat preservation foam board. First limiting frames 36 are screwed to the outer walls of both ends of the cutting table 1. Moving grooves 37 are opened on the outer walls of both ends of the cutting table 1, and a hand-tightening screw rod 38 is inserted into the moving grooves 37. A second limiting frame 39 is installed on the hand-tightening screw rod 38 by means of threads. A conveying roller 40 is inserted into the first limiting frame 36, and the other end of the conveying roller 40 is inserted and installed on the second limiting frame 39; The blade 15 can be rotated by driving it with the third motor 16, and the positions of the two cutting edges can be swapped. By energizing the semiconductor refrigerating sheet 27, heat exchange can be carried out to generate low temperature at the cooling frame 28, thereby reducing the temperature inside the cooling box 24. The heat generated by the heat exchange can be discharged by using the heat conducting frame 25 and the cooling fan 26. By using the exhaust fan 30 to suck air, cold air can pass through the air outlet 29 and enter the corrugated expansion pipe 31. Under the guidance of the corrugated expansion pipe 31, the cold air will enter the cold air pipe 32 and be discharged outside. The cold air can be used to quickly cool the cutting edge located at the top of the blade 15 to ensure that the blade 15 can work continuously. By driving the fan blade 34 to rotate with the motor 35, the cold air inside the cooling box 24 can be dispersed more evenly. By rotating the hand-twisted screw rod 38, the second limiting frame 39 can be moved in the moving groove 37 until the conveying roller 40 is separated from the second limiting frame 39. At this time, the staff can lift the conveying roller 40 and remove it from the first limiting frame 36.

[0021] The first spring rod 18, the second spring rod 20, the backing plate 22, the controller 23, the cooling fan 26, the semiconductor refrigerating sheet 27, and the motor 35 used in the present invention are all existing mature technologies, so no specific description will be given in the following text. During use, the leather is wound around a conveying roller 40, and one end of the leather is pulled out and wound around another conveying roller 40. By starting the four first motors 8 to run synchronously through the controller 23, and using the forward and reverse rotation of the second screw rod 41, the slider 6 can move up and down at the sliding opening 5. When the slider 6 moves downward, it will drive the second spring rod 20 and the pressing roller 21 to move downward. By using the pressing roller 21 to press the leather, the leather can be fixed, which is beneficial for the leather to closely adhere to the backing plate 22 during the cutting process. At the same time, under the action of the second spring rod 20, the pressing and fixing effect of the pressing roller 21 on the leather can be improved. During the downward movement of the slider 6, the support rod 9 can drive the movable frame 10 to move downward until the blade 15 pierces the leather. By using the first spring rod 18 to push the pressing frame 19, the two sides of the piercing position of the blade 15 can be pressed to ensure the flatness of the leather during cutting. By driving another conveying roller 40 to wind up through an external motor, the leather can be pulled to move, so that the blade 15 continuously cuts the leather. By driving the first screw rod 12 with the second motor 13, the tool holder 14 can move in the movable groove 11, thereby adjusting the cutting position to facilitate the use of leathers of different widths. By driving the blade 15 with the third motor 16, the blade 15 can be rotated and the positions of the two cutting edges can be swapped. By energizing the semiconductor refrigerating sheet 27, heat exchange can be carried out to generate a low temperature at the cooling frame 28, thereby reducing the temperature in the cooling box 24. The heat generated by the heat exchange can be discharged by using the heat conducting frame 25 and the cooling fan 26. By using the exhaust fan 30 to suck air, the cold air can pass through the air outlet 29 and enter the corrugated telescopic tube 31. Under the guidance of the corrugated telescopic tube 31, the cold air will enter the cold air duct 32 and be discharged externally. The cold air can quickly cool the cutting edge at the top of the blade 15 to ensure that the blade 15 can continuously work. By driving the fan blade 34 to rotate with the motor 35, the cold air in the cooling box 24 can be dispersed more evenly. By rotating the hand-tightening screw rod 38, the second limiting frame 39 moves in the moving groove 37 until the conveying roller 40 is separated from the second limiting frame 39. At this time, the staff can lift the conveying roller 40 and remove it from the first limiting frame 36.

[0022] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements should also be regarded as within the protection scope of this template.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0024] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The above has described in detail an embodiment of the present invention, but the content described is only a preferred embodiment of the present invention and cannot be considered as used to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention shall still fall within the scope covered by the patent of the present invention.

Claims

1. A double-head continuous cutting device applied to leather production, comprising a cutting table (1), characterized in that: Support blocks (2) are welded around the top end face of the cutting table (1), and a vertical pipe (3) is welded to the top end face of the support block (2). Above the top of the cutting table (1), there is a top plate (4), and the bottom end face of the top plate (4) is fixedly welded to the top end of the vertical pipe (3). A sliding opening (5) is formed on the outer wall of one side of the vertical pipe (3). A slider (6) is slidably installed inside the vertical pipe (3), and one end of the slider (6) penetrates through the sliding opening (5). Brackets (7) are screwed around the top end face of the top plate (4), and a first motor (8) is screwed onto the bracket (7). A second screw rod (41) is arranged inside the vertical pipe (3), and the top end of the second screw rod (41) is connected to the output end of the first motor (8) through a coupling. The second screw rod (41) is threadedly connected to the slider (6). A support rod (9) is welded to one end of the slider (6). Below the bottom of the top plate (4), there is a movable frame (10), and the other end of the support rod (9) is fixedly screwed to the outer wall of the movable frame (10). Movable grooves (11) are formed on both sides of the bottom of the movable frame (10), and a first screw rod (12) is inserted into the movable groove (11). Second motors (13) are screwed on both sides of the movable frame (10), and the output ends of the two second motors (13) are respectively connected to one end of the two first screw rods (12) through a coupling. A tool holder (14) is threadedly installed on the first screw rod (12), and a blade (15) is arranged in the center of the tool holder (14). Side plates (17) are welded to the outer walls on both sides of the tool holder (14), and a first spring rod (18) is screwed to the bottom end face of the side plate (17). A pressing frame (19) is screwed to the telescopic end of the first spring rod (18). A second spring rod (20) is screwed to the bottom end face of the slider (6), and a pressing roller (21) is screwed to the telescopic end of the second spring rod (20).

2. The double-head continuous cutting device for leather production according to claim 1, characterized in that: Blades are formed on both the top and bottom of the blade (15). A third motor (16) is screwed to the outer wall of one side of the tool holder (14), and the output end of the third motor (16) penetrates through the tool holder (14) and is fixedly screwed to the center of the blade (15).

3. The double-head continuous cutting device for leather production according to claim 1, wherein: The first motor (8), the second motor (13), and the third motor (16) are all stepper motors. The pressing roller (21) is made of rubber material. The pressing frame (19) is made of stainless steel material, and the bottom of the pressing frame (19) is smooth.

4. A double-head continuous cutting device applied to leather production according to claim 1, characterized in that: A backing plate (22) is screwed to the top end face of the cutting table (1), and the backing plate (22) is made of stainless steel material. A controller (23) is screwed to the bottom end face of the cutting table (1).

5. A double-head continuous cutting device applied to leather production according to claim 1, characterized in that: The top end face of the top plate (4) is screwed with a cooling box (24), and one end of the top of the cooling box (24) is screwed with a heat conduction frame (25). The top of the heat conduction frame (25) is screwed with a heat dissipation fan (26). The bottom of the heat conduction frame (25) is adhesively connected with a semiconductor refrigeration sheet (27). The bottom of the heat conduction frame (25) is screwed with a cooling frame (28), and the cooling frame (28) is attached to the outer wall of the semiconductor refrigeration sheet (27). One side of the cooling box (24) is provided with an air outlet (29), and an exhaust fan (30) is screwed at the air outlet (29). The output end of the exhaust fan (30) is sleeved with a corrugated expansion pipe (31). A cold air pipe (32) is arranged on one side of the movable frame (10), and the other end of the corrugated expansion pipe (31) is inserted and communicated with the top end of the cold air pipe (32). A pair of connecting rods (33) are screwed on the outer wall of one side of the movable frame (10), and the other ends of the connecting rods (33) are screwed and fixed to the cold air pipe (32).

6. The double-head continuous cutting device for leather production according to claim 5, wherein: A fan blade (34) is inserted into the cooling box (24). A motor (35) is screwed on the outer wall of one side of the cooling box (24), and the output end of the motor (35) is welded and fixed to one end of the fan blade (34). The inner wall of the cooling box (24) is composed of a heat preservation foam board.

7. The double-head continuous cutting device for leather production according to claim 1, wherein: First limiting frames (36) are screwed on the outer walls of both ends of the cutting table (1). Moving grooves (37) are opened on the outer walls of both ends of the cutting table (1), and a hand-tightening screw rod (38) is inserted into the moving grooves (37). A second limiting frame (39) is installed on the hand-tightening screw rod (38) through threads. A conveying roller (40) is inserted into the first limiting frame (36), and the other end of the conveying roller (40) is inserted and installed on the second limiting frame (39).

8. A working method of a double-head continuous cutting device applied to leather production, using any one of the double-head continuous cutting devices applied to leather production as claimed in claims 1-7, characterized in that: Including the following steps, S1: Leather fixation. By winding the leather around a conveying roller (40) and pulling out one end of the leather and winding it around another conveying roller (40), start the four first motors (8) to run synchronously through the controller (23). By the forward and reverse rotation of the second screw rod (41), the slider (6) can move up and down at the sliding opening (5). When the slider (6) moves down, it will drive the second spring rod (20) and the pressing roller (21) to move down. By using the pressing roller (21) to press the leather, the leather can be fixed, which is beneficial to the leather closely adhering to the backing plate (22) during the cutting process. At the same time, under the action of the second spring rod (20), the pressing and fixing effect of the pressing roller (21) on the leather can be improved; S2: Leather cutting. During the downward movement of the slider (6), the support rod (9) can drive the movable frame (10) to move downward until the blade (15) pierces the leather. By using the first spring rod (18) to push the pressing frame (19), the two sides of the position where the blade (15) pierces the leather can be pressed to ensure the flatness of the leather during cutting. By driving another conveying roller (40) through an external motor for winding, the leather can be pulled to move, enabling the blade (15) to continuously cut the leather. By driving the first screw rod (12) with the second motor (13), the tool holder (14) can move in the movable slot (11), thereby adjusting the cutting position to facilitate the use of leather with different widths. S3: Blade cooling. By driving the blade (15) with the third motor (16), it can be rotated and the positions of the two cutting edges can be swapped. By energizing the semiconductor refrigeration sheet (27), heat exchange can be carried out to generate a low temperature at the cooling frame (28), thereby reducing the temperature inside the cooling box (24). The heat generated by the heat exchange can be discharged by using the heat conduction frame (25) and the cooling fan (26). By using the exhaust fan (30) to suck air, the cold air can pass through the air outlet (29) and enter the corrugated expansion pipe (31). Under the guidance of the corrugated expansion pipe (31), the cold air will enter the cold air pipe (32) and be discharged externally. The cold air can be used to quickly cool the cutting edge at the top of the blade (15) to ensure that the blade (15) can continuously work. By driving the fan blade (34) to rotate with the motor (35), the cold air inside the cooling box (24) can be more evenly dispersed. S4: End of work. By rotating the hand-tightening screw rod (38), the second limiting frame (39) can move in the moving slot (37) until the conveying roller (40) is separated from the second limiting frame (39). At this time, the staff can lift the conveying roller (40) and remove it from the first limiting frame (36).

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