Feeding positioning device of leather cutting machine

Abstract

The invention discloses a feeding positioning device of a leather cutting machine, which comprises a cutting machine main body and a feeding platform arranged on the cutting machine main body, the left side of the top of the feeding platform is provided with a mounting rack, and the top of the mounting rack is provided with an unwinding roller for unwinding leather. According to the leather cutting device, leather can be conveniently and rapidly pressed down and clamped on the feeding platform, so that a cutting tool can move and cut the leather conveniently, through cooperation of the multiple buffering assemblies, the positioning clamping plate can have the good buffering performance in the leather positioning process, and the leather cutting efficiency is improved. The problems that in the leather positioning and cutting process of an existing positioning assembly, due to the poor buffering performance, instant impact force directly acts on leather easily, and then the surface of the leather is scratched, indented and even damaged are solved, the rejection rate of the leather in the cutting process is reduced, the processing efficiency and quality of the leather are improved, and the production cost is reduced. The use requirements of people are greatly met, and the device is suitable for popularization and application.

Description

Technical Field

[0001] The invention relates to the technical field of leather cutting, in particular to a feeding positioning device of a leather cutting machine. Background Art

[0002] In the field of leather processing, the feeding positioning device of the leather cutting machine is crucial to ensure cutting accuracy. Among them, the positioning components on both sides of the feeding platform play a key role in fixing the position of the leather to ensure that the leather will not move during the cutting process.

[0003] The existing feeding and positioning devices of leather cutting machines have obvious defects in the design of positioning components. Most of the existing positioning components adopt a simple clamping method, which directly applies a clamping force to the leather through a clamping claw to fix its position.

[0004] However, most of the existing positioning components do not have good buffering performance in leather processing. Since leather materials are diverse and their thicknesses vary, this positioning component without buffering can easily cause instantaneous impact force to act directly on the leather when clamping the leather; for thinner leather, such as sheepskin, this impact force can easily cause scratches, indentations or even damage to the leather surface; even for thicker leather, frequent unbuffered clamping operations may also cause microscopic damage to the leather inside, affecting the quality of the leather and subsequent processing performance; this leather damage problem caused by the lack of buffering function of the positioning component not only increases the scrap rate in the leather processing process, but also limits the efficiency of leather processing and product quality.

[0005] Based on the above problems, the present invention proposes a feeding and positioning device for a leather cutting machine. Summary of the invention

[0006] Based on the technical problems existing in the background technology, the present invention proposes a feeding positioning device for a leather cutting machine.

[0007] The present invention provides a feeding and positioning device for a leather cutting machine, comprising a cutting machine body and a feeding platform arranged on the cutting machine body, a mounting frame is arranged on the left side of the top of the feeding platform, a reel roller for reeling leather is arranged on the top of the mounting frame, and a feeding roller for guiding and feeding leather is arranged on the right side of the mounting frame; a door frame is fixedly installed on the feeding platform located on the right side of the mounting frame, a moving seat is movably installed in the door frame through a cutting moving mechanism, a lifting motor is fixedly installed at the bottom of the moving seat, and a cutting tool for cutting leather is fixedly installed at the output end of the lifting motor; a horizontal plate is fixedly installed on the top of the door frame, cylinders are fixedly installed at the four corners of the bottom ends of the horizontal plate, a buffer seat is fixedly installed at the output end of the cylinder, and a positioning clamping plate for positioning leather on both sides of the feeding platform is movably installed below the buffer seat through a buffer mechanism;

[0008] The buffer mechanism comprises a buffer cavity provided on the buffer seat, a movable block is movably installed in the buffer cavity, connecting rods are fixedly connected to both sides of the bottom of the movable block, the bottom end of the connecting rod movably penetrates to the bottom of the buffer seat and is fixedly connected to the positioning clamping plate; a spring groove is provided at the bottom of the movable block, a first buffer spring is fixedly connected in the spring groove, and the bottom end of the first buffer spring is fixedly connected to the bottom inner wall of the buffer cavity;

[0009] An elastic buffer ring is fixedly connected between the top center of the movable block and the top inner wall of the buffer chamber, and the middle parts of both sides of the elastic buffer ring are rotatably connected with inclined rotating connecting rods. The movable blocks located on both sides of the elastic buffer ring are fixedly connected with adapter seats, and the adapter seats are provided with adapter holes. The same rotating shaft is rotatably installed in the adapter hole through two bearings, and one end of the rotating shaft is fixedly connected to the rotating connecting rod; a torsion spring is sleeved on the rotating shaft located in the adapter hole, one end of the torsion spring is fixedly connected to the rotating shaft, and the other end of the torsion spring is fixedly connected to the inner wall of the adapter hole.

[0010] Preferably, the buffer mechanism also includes two movable frames arranged on the top inner wall of the buffer chamber, and the elastic buffer ring is located between the two movable frames, a buffer roller is rotatably installed at the bottom of the movable frame, and the elastic buffer ring is rollingly connected to the buffer roller; a slide seat is fixedly connected to the top of the movable frame, and slide grooves are provided on both sides of the top inner wall of the buffer chamber, and the slide seat is slidably installed in the slide groove along the horizontal direction, and a hydraulic buffer rod is fixedly installed in the slide groove, and the piston end of the hydraulic buffer rod is fixedly connected to the slide seat.

[0011] Preferably, a groove is provided on the inner wall of the two slide grooves on the side close to each other, a second buffer spring is fixedly connected in the groove, and the other end of the second buffer spring is fixedly connected to the slide seat.

[0012] Preferably, a third buffer spring arranged vertically is fixedly connected between the top inner wall and the bottom inner wall of the elastic buffer ring.

[0013] Preferably, the cutting moving mechanism includes a screw rotatably installed in the portal frame, and the screw is arranged along the front-to-back direction, and the moving seat is provided with a screw hole arranged along the front-to-back direction, and the screw passes through the screw hole and is threadedly connected with the screw hole; a stepper motor is fixedly installed on the rear inner wall of the portal frame cavity, and the output end of the stepper motor is fixedly connected to the rear end of the screw.

[0014] Preferably, movable rods are fixedly connected to both sides of the top of the movable seat, and guide sliders are fixedly connected to the top of the movable rods. Guide rails are fixedly connected to both ends of the inner wall at the top of the door frame, and guide grooves are provided on the bottom side of the guide rails along the front-to-back direction, and the guide rails are slidably installed in the guide grooves along the front-to-back direction.

[0015] Preferably, guide balls are rollingly mounted on both ends of the movable block, guide grooves are provided on both inner walls of the buffer cavity, and one side of the guide ball extends into the guide groove and is rollingly connected with the inner wall of the guide groove in the vertical direction.

[0016] Preferably, a pressure sensor is provided on the positioning clamp plate between the two connecting rods, a pressure regulating valve is also provided on the cylinder, and a controller is provided on the right side of the cutting machine body. The controller controls the extension and retraction of the cylinder through the pressure regulating valve according to the pressure information received by the pressure sensor; and the controller is also electrically controlled and connected to the pressure regulating valve, lifting motor, and stepper motor on the cylinder respectively.

[0017] The beneficial effects of the present invention are:

[0018] 1. In the present invention, the buffer seat and the positioning clamp are pushed downward by the cylinder, so that the leather can be pressed down and clamped on the feeding platform conveniently and quickly, so that the cutting tool can be used for mobile cutting of the leather;

[0019] 2. In the present invention, when the positioning pressure on the leather is too large during the positioning process, the positioning clamp can move upward to buffer, and the first buffer spring can buffer and cooperate to offset a part of the excessive positioning pressure; at the same time, the elastic buffer ring and the third buffer spring can compress and cooperate to further consume a part of the excessive positioning pressure, so as to reduce the excessive pressure on the leather during positioning;

[0020] 3. In the present invention, when the elastic buffer ring is squeezed and expanded outward, it will also cause the rotating connecting rod and the rotating shaft to rotate, thereby causing the torsion spring to twist and deform, which can further achieve the effect of buffering and dissipating energy;

[0021] 4. In the present invention, when the elastic buffer ring is squeezed, it will compress and expand toward both sides, and the buffer rollers, the movable frame, and the slide seat on both sides will move away from each other, thereby compressing the hydraulic buffer rod and stretching the second buffer spring. In this way, the hydraulic buffer of the hydraulic buffer rod and the deformation buffer of the second buffer spring can further achieve the effect of buffering and absorbing energy, thereby further reducing the excessive pressure on the leather during positioning, so that the clamping force can be guaranteed without damaging the leather.

[0022] 5. In the present invention, a pressure regulating valve is provided in the gas circuit system of the cylinder, so that the size of the positioning pressure can be adjusted according to the material and thickness of the leather, so that the positioning pressure of the positioning splint can be further regulated to ensure a better overall positioning effect;

[0023] To sum up, the present invention can not only conveniently and quickly press down and clamp the leather on the feeding platform so that the cutting tool can move and cut the leather, but also through the cooperation of multiple buffer components, the positioning clamp can also have good buffering performance in the process of positioning the leather, thereby avoiding the problem that the existing positioning components are prone to cause instantaneous impact force directly acting on the leather due to poor buffering performance during leather positioning and cutting, thereby causing scratches, indentations or even damage to the leather surface. It not only reduces the scrap rate of leather in the cutting process, but also improves the processing efficiency and quality of leather, greatly meets people's use needs, and is suitable for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A structural schematic diagram of a feeding and positioning device for a leather cutting machine proposed by the present invention;

[0025] Figure 2 It is a schematic diagram of the door frame and the buffer seat after cross-section of the present invention;

[0026] Figure 3 It is a structural schematic diagram of local details of the present invention;

[0027] Figure 4 For the present invention Figure 3 A schematic diagram of the structure with further details enlarged;

[0028] Figure 5 For the present invention Figure 4 The structural diagram of the enlarged part A in the middle;

[0029] Figure 6 It is a schematic cross-sectional view of the structure between the rotating connecting rod and the adapter seat in a part of the present invention;

[0030] Figure 7 It is a side view of the transfer hole, the rotating shaft and the torsion spring in the present invention.

[0031] In the figure: 1. cutting machine body; 2. feeding platform; 3. mounting frame; 301. unwinding roller; 302. feeding roller; 4. door frame; 5. horizontal plate; 6. cylinder; 7. buffer seat; 700. spring groove; 701. buffer chamber; 702. connecting rod; 703. movable block; 704. first buffer spring; 705. guide ball; 706. guide roller groove; 8. positioning clamp; 801. pressure sensor; 9. moving seat; 901. screw hole; 902. stepping motor; 903. screw; 904 , movable rod; 905, guide slider; 906, guide rail; 10, controller; 11, lifting motor; 12, cutting tool; 13, elastic buffer ring; 131, third buffer spring; 14, rotating connecting rod; 141, adapter seat; 142, adapter hole; 143, rotating shaft; 144, torsion spring; 145, bearing; 15, buffer roller; 151, movable frame; 152, slide seat; 153, hydraulic buffer rod; 154, slideway groove; 155, second buffer spring; 156, groove. DETAILED DESCRIPTION

[0032] The present invention will be further explained below in conjunction with specific embodiments.

[0033] Example

[0034] refer to Figure 1-7 In this embodiment, a feeding and positioning device of a leather cutting machine is proposed, comprising a cutting machine body 1 and a feeding platform 2 arranged on the cutting machine body 1, a mounting frame 3 is arranged on the left side of the top of the feeding platform 2, a reeling roller 301 for reeling leather is arranged on the top of the mounting frame 3, and a feeding roller 302 for guiding and feeding leather is arranged on the right side of the mounting frame 3; a door frame 4 is fixedly installed on the feeding platform 2 located on the right side of the mounting frame 3, a moving seat 9 is movably installed in the door frame 4 through a cutting moving mechanism, a lifting motor 11 is fixedly installed at the bottom of the moving seat 9, and a cutting tool 12 for cutting leather is fixedly installed at the output end of the lifting motor 11; a horizontal plate 5 is fixedly installed on the top of the door frame 4, a cylinder 6 is fixedly installed at the four corners of the bottom ends of the horizontal plate 5, a buffer seat 7 is fixedly installed at the output end of the cylinder 6, and a positioning clamp 8 for positioning the leather on both sides of the feeding platform 2 is movably installed below the buffer seat 7 through a buffer mechanism;

[0035] The buffer mechanism comprises a buffer cavity 701 arranged on the buffer seat 7, a movable block 703 is movably installed in the buffer cavity 701, and connecting rods 702 are fixedly connected to both sides of the bottom of the movable block 703, and the bottom end of the connecting rod 702 movably penetrates to the bottom of the buffer seat 7 and is fixedly connected to the positioning clamping plate 8; a spring groove 700 is provided at the bottom of the movable block 703, and a first buffer spring 704 is fixedly connected in the spring groove 700, and the bottom end of the first buffer spring 704 is fixedly connected to the bottom inner wall of the buffer cavity 701; an elastic buffer ring 13 is fixedly connected between the top center of the movable block 703 and the top inner wall of the buffer cavity 701 The middle parts of both sides of the elastic buffer ring 13 are rotatably connected with the inclined rotating connecting rod 14, and the movable blocks 703 located on both sides of the elastic buffer ring 13 are fixedly connected with the adapter seat 141, and the adapter seat 141 is provided with an adapter hole 142. The same rotating shaft 143 is rotatably installed in the adapter hole 142 through two bearings 145, and one end of the rotating shaft 143 is fixedly connected to the rotating connecting rod 14; a torsion spring 144 is sleeved on the rotating shaft 143 located in the adapter hole 142, one end of the torsion spring 144 is fixedly connected to the rotating shaft 143, and the other end of the torsion spring 144 is fixedly connected to the inner wall of the adapter hole 142.

[0036] like Figure 4-5 In the embodiment, the buffer mechanism also includes two movable frames 151 arranged on the top inner wall of the buffer chamber 701, and the elastic buffer ring 13 is located between the two movable frames 151, and a buffer roller 15 is rotatably installed at the bottom of the movable frame 151, and the elastic buffer ring 13 is rollingly connected to the buffer roller 15; a slide seat 152 is fixedly connected to the top of the movable frame 151, and slide grooves 154 are provided on both sides of the top inner wall of the buffer chamber 701, and the slide seat 152 is slidably installed in the slide groove 154 along the horizontal direction, and a hydraulic buffer rod 153 is fixedly installed in the slide groove 154, and the piston end of the hydraulic buffer rod 153 is fixedly connected to the slide seat 152.

[0037] like Figure 4-5 A groove 156 is provided on the inner wall of the two slide grooves 154 on the side close to each other, and a second buffer spring 155 is fixedly connected in the groove 156, and the other end of the second buffer spring 155 is fixedly connected to the slide seat 152; a vertically arranged third buffer spring 131 is fixedly connected between the top inner wall and the bottom inner wall of the elastic buffer ring 13.

[0038] like Figure 3 In the figure, the cutting moving mechanism includes a screw 903 rotatably installed in the door frame 4, and the screw 903 is arranged along the front-to-back direction. The moving seat 9 is provided with a screw hole 901 arranged along the front-to-back direction. The screw 903 passes through the screw hole 901 and is threadedly connected with the screw hole 901; a stepper motor 902 is fixedly installed on the inner wall of the rear side of the inner cavity of the door frame 4, and the output end of the stepper motor 902 is fixedly connected to the rear end of the screw 903.

[0039] In this embodiment, movable rods 904 are fixedly connected to both sides of the top of the movable seat 9, and a guide slider 905 is fixedly connected to the top of the movable rod 904. Guide rails 906 are fixedly connected to both ends of the inner wall at the top of the door frame 4. The bottom side of the guide rail 906 is provided with a guide groove arranged along the front-to-back direction, and the guide rail 906 is slidably installed in the guide groove along the front-to-back direction; guide balls 705 are rollingly installed at both ends of the movable block 703, and guide grooves 706 are provided on the inner walls of both sides of the buffer cavity 701, and one side of the guide ball 705 extends into the guide groove 706 and is rollingly connected to the inner wall of the guide groove 706 along the vertical direction.

[0040] Among them, a pressure sensor 801 is arranged on the positioning clamp plate 8 between the two connecting rods 702, a pressure regulating valve is also arranged on the cylinder 6, and a controller 10 is arranged on the right side of the cutting machine body 1. The controller 10 controls the extension and retraction of the cylinder 6 through the pressure regulating valve according to the pressure information received by the pressure sensor 801; and the controller 10 is also electrically controlled and connected with the pressure regulating valve, the lifting motor 11, and the stepping motor 902 on the cylinder 6 respectively.

[0041] like Figure 1-7The feeding positioning device of a leather cutting machine shown in the figure, when in use, by setting positioning components (i.e. mainly referring to positioning clamps 8) on both sides of the feeding platform 2, when the leather is fed to the feeding platform 2, the cylinder 6 in the positioning component is used to push the buffer seat 7 and the positioning clamp 8 downward and press the leather down and clamp it on the feeding platform 2; then the lifting motor 11 is used to push the cutting tool 12 down to the leather on the feeding platform 2, and the stepping motor 902 in the cutting moving mechanism drives the screw 903 to rotate forward and reverse, so that the moving seat 9 is moved forward or backward on the screw 903 through the screw hole 901, and then the cutting tool 12 is moved to cut the leather on the feeding platform 2. And in the process of positioning the leather, it also has good buffering performance. When the positioning pressure on the leather is too large, the positioning clamp plate 8 can move upward for buffering. When the positioning clamp plate 8 moves upward, it will drive the movable block 703 to move upward through the connecting rod 702 and compress the first buffer spring 704 for buffering. In this way, through the buffering cooperation of the first buffer spring 704, part of the excessive positioning pressure can be offset; at the same time, when the movable block 703 moves upward, it also compresses the elastic buffer ring 13 and the third buffer spring 131. In this way, through the deformation buffering of the elastic buffer ring 13 and the third buffer spring 131, part of the excessive positioning pressure can be further consumed to reduce the excessive pressure on the leather during positioning; and when the elastic buffer ring 13 is squeezed and expanded outward, it will also make the rotating The connecting rod 14 and the adapter seat 141 rotate and cause the rotating shaft 143 to rotate in the adapter hole 142, thereby causing the torsion spring 144 to twist and deform, which can further achieve the effect of buffering and energy dissipation; at the same time, when the elastic buffer ring 13 is squeezed, the elastic buffer ring 13 itself will be compressed and expanded to both sides, and the buffer rollers 15, the movable frame 151, and the slide seat 152 on both sides will be moved away from each other, thereby compressing the hydraulic buffer rod 153 and stretching the second buffer spring 155. In this way, through the hydraulic buffering of the hydraulic buffer rod 153 and the deformation buffering of the second buffer spring 155, the effect of buffering and energy absorption can be further achieved, thereby further reducing the excessive pressure on the leather during positioning, which can ensure the clamping force without damaging the leather. At the same time, a pressure regulating valve is arranged in the air circuit system of the cylinder 6, and the positioning pressure can be adjusted according to the material and thickness of the leather, that is, the controller 10 can control the extension and contraction of the cylinder 6 through the pressure regulating valve according to the pressure information received by the pressure sensor 801, and then the positioning pressure of the positioning splint 8 can be further regulated to ensure a better overall positioning effect, and avoid the existing positioning components from causing instantaneous impact force directly acting on the leather due to poor buffering performance during leather positioning and cutting, thereby causing scratches, indentations or even damage to the leather surface. This not only reduces the scrap rate of leather in cutting processing, but also improves the processing efficiency and quality of leather, and is suitable for promotion and application.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A feeding and positioning device for a leather cutting machine, comprising a cutting machine body (1) and a feeding platform (2) arranged on the cutting machine body (1), characterized in that: A mounting frame (3) is provided on the left side of the top of the feeding platform (2), a reeling roller (301) for reeling leather is installed on the top of the mounting frame (3), and a feeding roller (302) for guiding and feeding leather is provided on the right side of the mounting frame (3); a door frame (4) is fixedly installed on the feeding platform (2) located on the right side of the mounting frame (3), a moving seat (9) is movably installed in the door frame (4) through a cutting moving mechanism, a lifting motor (11) is fixedly installed at the bottom of the moving seat (9), and a cutting tool (12) for cutting leather is fixedly installed at the output end of the lifting motor (11); a horizontal plate (5) is fixedly installed on the top of the door frame (4), cylinders (6) are fixedly installed at the four corners of the bottom ends of the horizontal plate (5), a buffer seat (7) is fixedly installed at the output end of the cylinder (6), and a positioning clamp (8) for positioning leather on both sides of the feeding platform (2) is movably installed below the buffer seat (7) through a buffer mechanism; The buffer mechanism comprises a buffer cavity (701) arranged on a buffer seat (7), a movable block (703) being movably installed in the buffer cavity (701), connecting rods (702) being fixedly connected to both sides of the bottom of the movable block (703), the bottom end of the connecting rod (702) being movably passed through the bottom of the buffer seat (7) and being fixedly connected to a positioning clamping plate (8); a spring groove (700) being arranged at the bottom of the movable block (703), a first buffer spring (704) being fixedly connected in the spring groove (700), and the bottom end of the first buffer spring (704) being fixedly connected to the inner wall of the bottom side of the buffer cavity (701); An elastic buffer ring (13) is fixedly connected between the top center of the movable block (703) and the top inner wall of the buffer chamber (701); the middle parts of both sides of the elastic buffer ring (13) are rotatably connected to an inclined rotating connecting rod (14); the movable blocks (703) located on both sides of the elastic buffer ring (13) are fixedly connected to an adapter seat (141); the adapter seat (141) is provided with an adapter hole (142); a same rotating shaft (143) is rotatably installed in the adapter hole (142) through two bearings (145), and one end of the rotating shaft (143) is fixedly connected to the rotating connecting rod (14); a torsion spring (144) is sleeved on the rotating shaft (143) located in the adapter hole (142); one end of the torsion spring (144) is fixedly connected to the rotating shaft (143), and the other end of the torsion spring (144) is fixedly connected to the inner wall of the adapter hole (142).

2. A feeding and positioning device for a leather cutting machine according to claim 1, characterized in that: The buffer mechanism also includes two movable frames (151) arranged on the top inner wall of the buffer cavity (701), and the elastic buffer ring (13) is located between the two movable frames (151); a buffer roller (15) is rotatably installed at the bottom of the movable frame (151), and the elastic buffer ring (13) is rollingly connected to the buffer roller (15); a slide seat (152) is fixedly connected to the top of the movable frame (151), and slide grooves (154) are provided on both sides of the top inner wall of the buffer cavity (701); the slide seat (152) is slidably installed in the slide groove (154) along the horizontal direction, and a hydraulic buffer rod (153) is fixedly installed in the slide groove (154), and the piston end of the hydraulic buffer rod (153) is fixedly connected to the slide seat (152).

3. The feeding and positioning device of a leather cutting machine according to claim 2, characterized in that: A groove (156) is provided on the inner wall of the two slide grooves (154) on the side close to each other, a second buffer spring (155) is fixedly connected in the groove (156), and the other end of the second buffer spring (155) is fixedly connected to the slide seat (152).

4. The feeding and positioning device for a leather cutting machine according to claim 2, characterized in that: A third buffer spring (131) arranged vertically is fixedly connected between the top inner wall and the bottom inner wall of the elastic buffer ring (13).

5. The feeding and positioning device for a leather cutting machine according to claim 1, characterized in that: The cutting moving mechanism comprises a screw rod (903) rotatably mounted in the portal frame (4), and the screw rod (903) is arranged along the front-back direction; a screw hole (901) arranged along the front-back direction is provided on the moving seat (9); the screw rod (903) penetrates the screw hole (901) and is threadedly connected to the screw hole (901); a stepping motor (902) is fixedly mounted on the rear inner wall of the inner cavity of the portal frame (4), and the output end of the stepping motor (902) is fixedly connected to the rear end of the screw rod (903).

6. The feeding and positioning device for a leather cutting machine according to claim 5, characterized in that: Both sides of the top of the movable seat (9) are fixedly connected with movable rods (904), the top of the movable rods (904) are fixedly connected with guide slide blocks (905), and both ends of the top inner wall of the door frame (4) are fixedly connected with guide rails (906), and the bottom side of the guide rails (906) is provided with guide grooves arranged in the front-rear direction, and the guide rails (906) are slidably installed in the guide grooves in the front-rear direction.

7. The feeding and positioning device for a leather cutting machine according to claim 1, characterized in that: Both ends of the movable block (703) are rollingly mounted with guide balls (705), and both inner walls of the buffer cavity (701) are provided with guide grooves (706), and one side of the guide ball (705) extends into the guide groove (706) and is rollingly connected with the inner wall of the guide groove (706) in the vertical direction.

8. The feeding and positioning device for a leather cutting machine according to claim 1, characterized in that: A pressure sensor (801) is arranged on the positioning clamp (8) between the two connecting rods (702), and a pressure regulating valve is also arranged on the cylinder (6). A controller (10) is arranged on the right side of the cutting machine body (1). The controller (10) controls the extension and retraction of the cylinder (6) through the pressure regulating valve according to the pressure information received by the pressure sensor (801); and the controller (10) is also electrically controlled and connected to the pressure regulating valve on the cylinder (6), the lifting motor (11), and the stepping motor (902).

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