A punching apparatus for low-cut leather shoe uppers and a method thereof

Abstract

The application discloses a punching device for low boots leather vamp and a method thereof, and relates to the technical field of punching devices, which comprises a base, a lifting device installed on the surface of the base and used for height adjustment of punching, a hydraulic cylinder connected with the lifting device through screws and used for power supply, and a punching rod sleeved on the external telescopic end of the bottom of the hydraulic cylinder and used for punching the vamp; after the vamp is positioned by the pressing device, the punching rod is driven by the hydraulic cylinder to complete punching, the blade of the punching rod is synchronously opened to the grinding rod and generates radial friction with the rough inclined surface of the grinding rod in the stroke, and bidirectional grinding is realized in one stroke; a plurality of grinding rods are driven by the driven gear, the connecting rod and the elastic element to revolve around the punching rod, circumferential continuous grinding is formed, the dead angle of grinding is eliminated, the punching rod is kept sharp in the use cycle, and the hole edge burr, tearing or non-punching phenomenon caused by blade passivation is avoided.

Description

Technical Field

[0001] This invention relates to the field of perforation equipment technology, specifically to a perforation device and method for the upper of ankle boots made of leather. Background Technology

[0002] In shoe manufacturing, the leather uppers of ankle boots need to be punched with rows of ventilation or decorative holes according to a pattern before proceeding to subsequent stitching and shaping processes. Currently, the perforation process for ankle boot leather uppers is typically done by directly punching with a stamping rod. However, due to the inherent toughness and thickness of leather, the cutting edge at the bottom of the stamping rod can gradually dull due to friction and impact during prolonged continuous operation. This leads to decreased punching efficiency, rough hole edges, and even quality problems such as leather tearing or incomplete punching.

[0003] Currently, some equipment maintains the sharpness of the cutting edge by periodically replacing the stamping rod or manually disassembling and sharpening it. However, this method not only increases maintenance costs but also significantly reduces production efficiency, making it difficult to meet the demands of modern shoemaking processes for efficient, continuous, and automated processing. Therefore, there is a need for equipment that can sharpen the cutting edge of the stamping rod in real time during the punching process to maintain its sharpness, thereby improving punching quality and production efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a perforation device and method for the leather upper of ankle boots, solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a perforation device and method for the leather upper of ankle boots, comprising:

[0006] Base;

[0007] Also includes:

[0008] A lifting device, installed on the surface of the base, is used to adjust the drilling height.

[0009] A hydraulic cylinder, connected to the lifting device by screws, is used to provide power;

[0010] A stamping rod, fitted onto the outside of the bottom telescopic end of the hydraulic cylinder, is used to punch holes in the shoe upper;

[0011] A grinding mechanism is located outside the bottom end of the stamping rod and is connected to the lifting device. It is used to grind the bottom edge of the stamping rod.

[0012] A pressing device, located below the stamping rod and connected to the surface of the base, is used to press the shoe upper.

[0013] A pressure assembly, connected to the grinding mechanism, is used to provide pressure to the clamping device.

[0014] Preferably, the lifting device includes a drive motor, which is connected to the base by bolts. The bottom output end of the drive motor is externally connected to a threaded rod, and the external threaded rod is externally connected to the internal thread of the lifting seat. Both ends of the lifting seat are slidably connected to slide rods, and both ends of the slide rods are connected to the base. The lifting device drives the threaded rod to rotate through the drive motor, so that the lifting seat can move up and down smoothly and accurately under the guidance of the slide rods on both sides, thereby precisely adjusting the punching height of the stamping rod.

[0015] Preferably, the grinding mechanism includes a pressure plate fitted around the outside of the stamping rod. The outer wall of the stamping rod is fixedly connected to the pressure plate. A first spring is provided below the pressure plate, and a lifting plate is provided at the bottom of the first spring. The lifting plate has a slot inside, and the slot inside the lifting plate slides in contact with the outer wall of the stamping rod. A second spring is provided at the bottom of the lifting plate, and a connecting plate is provided at the bottom of the second spring. Both ends of the connecting plate are bolted to one end of the bottom of the fixed rod, and one end of the top of the fixed rod is connected to the lifting seat. In this grinding mechanism, the pressure plate moves down synchronously with the stamping rod, and the lifting plate is elastically pushed by the first spring. Under the synergistic action of the second spring and the connecting plate, the lifting plate forms a flexible buffer and reset, ensuring that the grinding rod is always close to the cutting edge and avoiding rigid collisions, effectively absorbing the impact of punching and extending the service life of the component.

[0016] Preferably, the top of the connecting plate is connected to one end of the bottom of the telescopic rod, and the top end of the telescopic rod is connected to the lifting plate. The surface of the connecting plate has a slot, and a guide rod is provided inside the slot. The surface of the guide rod has a spiral groove. The top end of the guide rod is fixedly connected to the lifting plate, and the bottom end of the guide rod slides in contact with the surface of the transmission gear. The transmission gear is rotatably connected to the bottom of the connecting plate, and the transmission gear meshes with the driven gear. The driven gear is rotatably connected to the bottom of the connecting plate. This structure uses the telescopic rod to maintain the axial rigidity of the lifting plate and the connecting plate during the punching process, preventing swaying. The spiral groove on the surface of the guide rod converts the linear displacement of the lifting plate into the rotational motion of the transmission gear. The meshing driven gear outputs power synchronously, realizing a compound action of "one descent and one rotation". This ensures that the grinding rod revolves around the stamping rod for grinding without dead angles, and eliminates the need for an additional motor, simplifying control and saving energy.

[0017] Preferably, the driven gear has a connecting rod at its bottom, with one end of the connecting rod fixedly connected to the driven gear. The connecting rods are distributed in a ring with equal spacing, and one side of the connecting rod is connected to an elastic element by a screw. One side of the elastic element is connected to a grinding rod by a screw. The grinding rods are distributed at an angle at their bottom, and have a rough surface. The inner side of the grinding rod is in sliding contact with one end of the bottom of the stamping rod. The stamping rod has a telescopic top rod inside, and a spring is provided at one end of the top of the telescopic top rod. This structure transmits the rotational power of the driven gear synchronously to multiple grinding rods through the evenly distributed ring connecting rods, achieving uniform grinding. The elastic element gives the grinding rod radial floating capability, allowing it to always stay close to the cutting edge during punching and automatically compensate for the gap as it wears, ensuring constant grinding pressure. The angled and rough grinding surface at the bottom forms bidirectional cutting during the downward and return strokes, quickly removing burrs and micro-chips. The stamping rod has a built-in telescopic top rod with a spring, which can instantly push out the waste material after punching, preventing blockage and reducing subsequent cleaning downtime.

[0018] Preferably, the clamping device includes a bracket, one bottom end of which is bolted to a base, and the bracket is bolted to a support platform. A lifting plate is provided at the bottom of the support platform, and a groove is correspondingly provided on the surface of the base below the lifting plate. A connecting arm is provided at one end of the lifting plate, the connecting arm having an L-shaped structure. A pressure strip is installed at the top end of the connecting arm, and a third spring is provided at the bottom of the pressure strip. The third spring is located inside the pressure block, which has a hollow internal structure. One end of the pressure block has a groove, and the bottom of the other end of the pressure block is sloped. A lifting groove is installed on the surface of the lifting plate. This clamping device is connected by a support... The frame is rigidly connected to the base and support platform to form a stable framework. The lifting plate can slide up and down in the groove of the base, driving the L-shaped connecting arm to move synchronously, realizing the overall lifting of the pressing strip and the pressing block, ensuring that the pressing action and the punching rhythm are completely synchronized. The pressing block has a groove at one end and a slope at the other end, which makes it easy for workers to quickly insert the leather. The third spring has a hollow pressing block inside, forming an elastic buffer, which can adaptively adjust the pressing force according to the thickness of the leather to prevent damage to the leather surface or insecure fixation. The lifting groove is linked with the subsequent airbag, which can press down again at the moment of punching, forming a two-stage pressing of "pre-pressurization-increase", completely eliminating leather slippage and wrinkling, and effectively improving the accuracy of the hole position and the cleanliness of the edges.

[0019] Preferably, the pressure assembly includes a piston rod, with one top end connected to a pressure plate and one bottom end fitted with a piston body. The piston body is located inside a pressure chamber, and two pressure chambers are provided, each mounted on the bottom end of a fixed rod. The bottom end of each pressure chamber is connected to an air bladder via a connecting pipe, and the air bladder is mounted on the surface of the lifting groove. This pressure assembly utilizes the mechanical stroke of the pressure plate as it moves downward with the punching rod to synchronously push the dual piston bodies to compress the air in the pressure chamber, converting mechanical energy into pneumatic energy without loss. This pneumatic energy is then rapidly inflated into the air bladder via the connecting pipe, causing the air bladder to expand instantly and push downward into the lifting groove, achieving integrated "punching-pressurization" linkage. Secondary pressing can be completed instantly during punching, ensuring zero-gap fixation between the leather and the support platform, completely eliminating slippage and rebound. No external air source or electrically controlled valve is required, resulting in a compact, energy-efficient, and reliable structure that significantly reduces equipment complexity and maintenance costs. All electrical components mentioned in this document are connected to an external main controller and 220V AC mains power, and the main controller can be a computer or other conventionally known control device.

[0020] Preferably, it includes the following steps:

[0021] S01: Place the leather upper on the support platform of the pressing device, start the drive motor to drive the threaded rod to rotate, so that the lifting seat moves down along the slide rod until the hydraulic cylinder drives the stamping rod to align with the position of the upper to be punched;

[0022] S02: The hydraulic cylinder extends, and the punching rod descends to pierce the shoe surface to complete the punching. At the same time, the bottom edge of the punching rod pushes the grinding rod outward as it passes through the shoe surface, so that the rough inclined surface at the bottom of the grinding rod rubs against the cutting edge, achieving real-time grinding during one downward movement.

[0023] S03: The stamping rod continues to descend, and the pressure plate pushes the lifting plate to move down through the first spring. The guide rod moves with it and drives the transmission gear to rotate through its spiral groove. The grinding rod is driven to revolve around the stamping rod through the driven gear, connecting rod and elastic element, and the cutting edge is uniformly ground in the circumference.

[0024] S04: As the pressure plate moves down, the piston rod pushes the piston body to compress the air in the pressure chamber, and inflates the airbag through the connecting pipe. The airbag expands and presses down the lifting groove and the lifting plate, so that the connecting arm drives the pressure strip to further press the pressure block, ensuring that the shoe upper remains fixed throughout the punching process.

[0025] S05: After punching is completed, the hydraulic cylinder retracts, the punching rod moves upward to reset, and the grinding rod rebounds under the action of the elastic element and re-fits the cutting edge, completing the return stroke and secondary grinding; after all parts are reset, the punched shoe upper can be taken out, and the next continuous punching operation can be carried out.

[0026] This invention provides a perforation device and method for the leather upper of ankle boots. It has the following beneficial effects:

[0027] After the device positions the leather shoe upper using a clamping device, a hydraulic cylinder drives the punching rod downwards to complete the punching. During the punching stroke, the cutting edge of the punching rod simultaneously opens the grinding rod and generates radial friction with its rough inclined surface, achieving bidirectional grinding in one downward stroke. The pressure plate moves downwards synchronously with the punching rod, and the first spring pushes the lifting plate and guide rod. The spiral groove of the guide rod meshes with the transmission gear, and through the driven gear, connecting rod and elastic element, it drives multiple grinding rods to revolve around the punching rod, forming continuous circumferential grinding, eliminating grinding dead angles, and ensuring that each punching is accompanied by vertical-rotation composite cutting edge sharpening, so that the punching rod remains sharp throughout its service life, avoiding burrs, tears or incomplete punching caused by blunt cutting edge. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a front view structural diagram of the present invention;

[0030] Figure 3 This is a schematic diagram of the pressure component structure of the present invention;

[0031] Figure 4 This is a schematic diagram of the driven gear structure of the present invention;

[0032] Figure 5 This is a schematic diagram of the guide rod structure of the present invention;

[0033] Figure 6 This is a schematic diagram of the elastic element structure of the present invention;

[0034] Figure 7 This is a schematic diagram of the pressing device structure of the present invention;

[0035] Figure 8 This is a schematic diagram of the airbag structure of the present invention.

[0036] In the diagram, 1. Base; 2. Lifting device; 201. Drive motor; 202. Threaded rod; 203. Slide rod; 204. Lifting seat; 3. Hydraulic cylinder; 4. Stamping rod; 5. Grinding mechanism; 501. Pressure plate; 502. First spring; 503. Lifting plate; 504. Second spring; 505. Connecting plate; 506. Telescopic rod; 507. Guide rod; 508. Transmission gear; 509. Driven gear; 510. Connecting rod; 511. Elastic element; 512. Grinding rod; 513. Fixing rod; 6. Pressing device; 601. Bracket; 602. Support platform; 603. Lifting plate; 604. Connecting arm; 605. Pressure bar; 606. Third spring; 607. Pressure block; 608. Lifting groove;

[0037] 7. Pressure assembly; 701. Piston rod; 702. Piston body; 703. Pressure chamber; 704. Connecting pipe; 705. Airbag. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1: Please refer to Figure 1-8 The present invention provides a technical solution: a perforation device for the leather upper of ankle boots, comprising: a base 1;

[0040] It also includes: a lifting device 2, mounted on the surface of the base 1, for adjusting the drilling height; a hydraulic cylinder 3, connected to the lifting device 2 by screws, for providing power; a punching rod 4, fitted onto the outside of the bottom telescopic end of the hydraulic cylinder 3, for punching holes in the shoe upper; a grinding mechanism 5, located outside one bottom end of the punching rod 4, connected to the lifting device 2, for grinding the bottom edge of the punching rod 4; a pressing device 6, located below the punching rod 4, connected to the surface of the base 1, for pressing the shoe upper; and a pressure assembly 7, connected to the grinding mechanism 5, for providing pressure to the pressing device 6.

[0041] This embodiment integrates a lifting device 2, a hydraulic cylinder 3, a punching rod 4, a grinding mechanism 5, a pressing device 6, and a pressure component 7 in a coordinated structure. This allows the equipment to automatically grind the cutting edge of the punching rod 4 in real time during continuous punching, effectively avoiding problems such as rough edges, tearing, or incomplete punching caused by a dull cutting edge. At the same time, the linkage between the pressing device 6 and the pressure component 7 ensures that the leather is fixed throughout the process, preventing displacement. This significantly improves punching efficiency and quality, and reduces the frequency of manual maintenance.

[0042] Example 2: Please refer to Figure 1-8This invention provides a technical solution: a perforation device for the leather upper of ankle boots. The lifting device 2 includes a drive motor 201, which is connected to a base 1 via bolts. The bottom output end of the drive motor 201 is keyed to a threaded rod 202. The threaded rod 202 is threadedly connected to the inside of a lifting seat 204. Both ends of the lifting seat 204 are slidably connected to slide rods 203, and both ends of the slide rods 203 are connected to the base 1. The grinding mechanism 5 includes a pressure plate 501, which is fitted onto the outside of a stamping rod 4. The outer wall of the stamping rod 4 is flush with the pressure plate 501. 01. Fixed connection: A first spring 502 is provided below the pressure plate 501. A lifting plate 503 is provided at the bottom of the first spring 502. The lifting plate 503 has a groove inside, and the groove inside the lifting plate 503 slides in contact with the outer wall of the stamping rod 4. A second spring 504 is provided at the bottom of the lifting plate 503. A connecting plate 505 is provided at the bottom of the second spring 504. Both ends of the connecting plate 505 are connected to one bottom end of the fixed rod 513 by bolts. One top end of the fixed rod 513 is connected to the lifting seat 204. The top of the connecting plate 505 is connected to one bottom end of the telescopic rod 506. The top end of the telescopic rod 506 is connected to the lifting plate 503. The surface of the connecting plate 505 has a slot, and a guide rod 507 is provided inside the slot. The surface of the guide rod 507 has a spiral groove. The top end of the guide rod 507 is fixedly connected to the lifting plate 503, and the bottom end of the guide rod 507 slides in contact with the surface of the transmission gear 508. The transmission gear 508 is rotatably connected to the bottom of the connecting plate 505. The transmission gear 508 meshes with the driven gear 509, and the driven gear 509 is rotatably connected to the bottom of the connecting plate 505. A connecting rod 510 is provided at the bottom of the driven gear 509. One end of the connecting rod 510 is fixedly connected to the driven gear 509. The connecting rods 510 are distributed in a ring with equal spacing. One side of the connecting rod 510 is connected to the elastic element 511 by screws. One side of the elastic element 511 is connected to the grinding rod 512 by screws. The bottom of the grinding rod 512 is distributed in an inclined shape and has a rough surface. The inner side of the grinding rod 512 is in sliding contact with one end of the bottom of the stamping rod 4. A telescopic top rod is provided inside the stamping rod 4, and a spring is provided at the top end of the telescopic top rod.

[0043] In this embodiment, the device is used by fixing the leather shoe upper with the clamping device 6, and then extending the telescopic end of the hydraulic cylinder 3 to allow the bottom end of the punching rod 4 to punch holes in the beveled surface of the leather. When the bottom end of the punching rod 4 extends downward, it will push the bottom end of the grinding rod 512 outward. During the pushing process, the bottom end of the punching rod 4 can rub against the grinding surface of the bottom of the grinding rod 512, so that the bottom edge of the punching rod 4 can be sharpened when it extends downward, thus preventing the bottom edge of the punching rod 4 from becoming dull after long-term use, which would affect the punching. At the same time, as the punching rod 4 moves downward, it can drive the pressure plate 501 to move downward. As the pressure plate 501 moves downward, it can elastically press the lifting plate 503 downward through the first spring 502, thereby... The lifting plate 503 can drive the guide rod 507 to move downwards. Through the groove on the surface of the guide rod 507, the guide rod 507 can force the transmission gear 508 to rotate when it moves downwards. The rotation of the transmission gear 508 can drive the driven gear 509 to rotate, which in turn can drive the connecting rod 510 to rotate. The connecting rod 510 can then drive multiple grinding rods 512 to rotate around the stamping rod 4 through multiple elastic elements 511. This ensures that the bottom end of the grinding rod 512 makes uniform contact with the bottom of the stamping rod 4, avoiding dead angles. As a result, the stamping rod 4 can grind perpendicularly to the grinding rod 512 and also rotate with the grinding rod 512 each time it punches a hole in the shoe upper. This ensures that the bottom edge of the stamping rod 4 remains sharp during use.

[0044] Example 3: Please refer to Figure 1-8 This invention provides a technical solution: a perforation device for the leather upper of ankle boots. The pressing device 6 includes a bracket 601, one bottom end of which is bolted to a base 1. The bracket 601 is also bolted to a support platform 602. A lifting plate 603 is provided at the bottom of the support platform 602. A groove is correspondingly provided on the surface of the base 1 below the lifting plate 603. A connecting arm 604 is provided at one end of the lifting plate 603. The connecting arm 604 has an L-shaped structure. A pressure strip 605 is installed at the top end of the connecting arm 604. A third spring 606 is provided at the bottom of the pressure strip 605. The third spring 606 is located inside a pressing block 607. The internal structure of 607 is hollow, and one end of the pressure block 607 is provided with a groove. The bottom of the other end of the pressure block 607 is sloping. The surface of the lifting plate 603 is provided with a lifting groove 608. The pressure assembly 7 includes a piston rod 701. The top end of the piston rod 701 is connected to the pressure plate 501. The bottom end of the piston rod 701 is provided with a piston body 702. The piston body 702 is located inside the pressure chamber 703. There are two pressure chambers 703. The two pressure chambers 703 are installed at the bottom end of the fixed rod 513. The bottom end of the pressure chamber 703 is connected to the airbag 705 through the connecting pipe 704. The airbag 705 is installed on the surface of the lifting groove 608.

[0045] In this embodiment, the leather material for the shoe upper is inserted into the bottom of the pressure block 607 from one end of the sloping bottom. The third spring 606 can elastically press the pressure block 607 downward, thereby allowing the pressure block 607 to elastically press the shoe upper downward. When the punching rod 4 moves downward, the pressure plate 501 will drive the piston rod 701 to move downward, which in turn will drive the piston body 702 inside the pressure chamber 703 to move downward. When the piston body 702 moves downward, the air inside the pressure chamber 703 can be injected into the air bladder 705 through the connecting pipe 704. When the airbag 705 inflates, it can push the lifting groove 608 and the lifting plate 603 downward. The lifting plate 603 will then move downward into the groove on the bottom surface, which will drive the connecting arm 604 to move downward. This will allow the connecting arm 604 to drive the pressure strip 605 to move downward. As the pressure strip 605 moves downward, it can further press down on the pressure block 607, so that the shoe upper can be fully fixed when punching holes. At the same time, due to the elastic support of the airbag 705, the bottom of the punching rod 4 is prevented from rigidly contacting the surface of the support platform 602 during punching, which would cause damage to the bottom of the punching rod 4.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A perforation device for the leather upper of ankle boots, comprising: Base (1); Its characteristic is that it also includes: A lifting device (2) is installed on the surface of the base (1) for adjusting the drilling height. A hydraulic cylinder (3) is connected to the lifting device (2) by screws to provide power; The stamping rod (4) is fitted onto the outside of the bottom telescopic end of the hydraulic cylinder (3) and is used to punch holes in the shoe surface; The grinding mechanism (5) is located outside the bottom end of the stamping rod (4) and is connected to the lifting device (2) for grinding the bottom edge of the stamping rod (4); The pressing device (6) is located below the stamping rod (4) and is connected to the surface of the base (1) for pressing the shoe upper. The pressure assembly (7), connected to the grinding mechanism (5), is used to provide pressure to the clamping device (6); The grinding mechanism (5) includes a pressure plate (501), which is fitted onto the outside of the stamping rod (4). The outer wall of the stamping rod (4) is fixedly connected to the pressure plate (501). A first spring (502) is provided below the pressure plate (501). A lifting plate (503) is provided at the bottom of the first spring (502). The lifting plate (503) has a slot inside and slides in contact with the outer wall of the stamping rod (4). A second spring (504) is provided at the bottom of the lifting plate (503). A connecting plate (505) is provided at the bottom of the second spring (504). Both ends of the connecting plate (505) are connected to one end of the bottom of the fixing rod (513) by bolts. One end of the top of the fixing rod (513) is connected to the lifting seat (204). The top of the connecting plate (505) is connected to the bottom end of the telescopic rod (506), and the top end of the telescopic rod (506) is connected to the lifting plate (503). The surface of the connecting plate (505) is provided with a hole and groove, and a guide rod (507) is provided inside the hole and groove on the surface of the connecting plate (505). The surface of the guide rod (507) is provided with a spiral groove. The top end of the guide rod (507) is fixedly connected to the lifting plate (503), and the bottom end of the guide rod (507) is in sliding contact with the surface of the transmission gear (508). The transmission gear (508) is rotatably connected to the bottom of the connecting plate (505). The transmission gear (508) meshes with the driven gear (509), and the driven gear (509) is rotatably connected to the bottom of the connecting plate (505). The driven gear (509) is provided with a connecting rod (510) at the bottom. The top end of the connecting rod (510) is fixedly connected to the driven gear (509). The connecting rods (510) are distributed in a ring with equal spacing. One side of the connecting rod (510) is connected to the elastic element (511) by a screw. One side of the elastic element (511) is connected to the grinding rod (512) by a screw. The bottom of the grinding rod (512) is distributed in an inclined shape and has a rough surface. The inner side of the grinding rod (512) is in sliding contact with the bottom end of the stamping rod (4). The stamping rod (4) is provided with a telescopic top rod inside and a spring is provided at the top end of the telescopic top rod.

2. The perforation device for the leather upper of ankle boots according to claim 1, characterized in that: The lifting device (2) includes a drive motor (201), which is connected to the base (1) by bolts. The bottom output end of the drive motor (201) is keyed to the threaded rod (202). The threaded rod (202) is threaded to the inside of the lifting seat (204). The two ends of the lifting seat (204) are slidably connected to the slide rod (203). The two ends of the slide rod (203) are connected to the base (1).

3. The perforation device for the leather upper of ankle boots according to claim 2, characterized in that: The pressing device (6) includes a bracket (601), one end of which is bolted to the base (1), and the bracket (601) is bolted to the support platform (602). The support platform (602) has a lifting plate (603) at its bottom. The base (1) below the lifting plate (603) has a groove corresponding to it. One end of the lifting plate (603) has a connecting arm (604), which is L-shaped. One end of the connecting arm (604) has a pressure strip (605), and the bottom of the pressure strip (605) has a third spring (606). The third spring (606) is located inside the pressure block (607), which has a hollow structure. One end of the pressure block (607) has a groove, and the bottom of the other end of the pressure block (607) is sloped. The surface of the lifting plate (603) has a lifting groove (608).

4. The perforation device for the leather upper of ankle boots according to claim 3, characterized in that: The pressure assembly (7) includes a piston rod (701), one end of which is connected to a pressure plate (501), and a piston body (702) is installed at the bottom end of the piston rod (701). The piston body (702) is located inside a pressure chamber (703). There are two pressure chambers (703), which are installed at the bottom end of a fixed rod (513). The bottom end of the pressure chamber (703) is connected to an airbag (705) via a connecting pipe (704). The airbag (705) is installed on the surface of a lifting groove (608).

5. The method of using the perforation device for the leather upper of ankle boots according to claim 4, characterized in that: Includes the following steps: S01: Place the leather shoe upper on the support platform (602) of the pressing device (6), start the drive motor (201) to drive the threaded rod (202) to rotate, so that the lifting seat (204) moves down along the slide rod (203) until the hydraulic cylinder (3) drives the punching rod (4) to align with the position of the shoe upper to be punched; S02: The hydraulic cylinder (3) extends, and the punching rod (4) descends to pierce the shoe surface to complete the punching. At the same time, the bottom edge of the punching rod (4) pushes the grinding rod (512) outward during the process of passing through the shoe surface, so that the rough inclined surface at the bottom of the grinding rod (512) rubs against the cutting edge, realizing real-time grinding during one downward process; S03: The stamping rod (4) continues to descend, and the pressure plate (501) pushes the lifting plate (503) down through the first spring (502). The guide rod (507) moves with it and drives the transmission gear (508) to rotate through its spiral groove. The grinding rod (512) is driven to revolve around the stamping rod (4) through the driven gear (509), the connecting rod (510) and the elastic element (511) to grind the cutting edge evenly in the circumference. S04: As the pressure plate (501) moves down, the piston rod (701) pushes the piston body (702) to compress the air in the pressure chamber (703), and inflates the airbag (705) through the connecting pipe (704). The airbag (705) expands and presses down the lifting groove (608) and the lifting plate (603), so that the connecting arm (604) drives the pressure strip (605) to further press the pressure block (607), ensuring that the shoe upper remains fixed throughout the punching process; S05: After punching is completed, the hydraulic cylinder (3) retracts, the punching rod (4) moves upward to reset, and the grinding rod (512) rebounds under the action of the elastic element (511) and fits the cutting edge again to complete the return second grinding; after each part is reset, the punched shoe upper is taken out and the next continuous punching operation can be carried out.

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