An upper punching device

Abstract

The application relates to the technical field of shoe upper processing equipment, in particular to a shoe upper punching device which comprises a base platform, a self-adaptive vacuum adsorption positioning assembly, a multi-degree-of-freedom punching execution mechanism and an integrated negative pressure scrap cleaning system. The device realizes stable clamping of a special-shaped shoe upper through flexible vacuum adsorption controllable in different zones, realizes multi-angle accurate punching in combination with a three-degree-of-freedom punching head, and synchronously removes scraps through negative pressure, so that the punching precision, efficiency and equipment versatility are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of shoemaking equipment technology, and in particular to a shoe upper perforation device. Background Technology

[0002] With the continuous improvement of automation in the footwear industry, perforation of shoe uppers, as a key process in footwear production, has placed higher demands on perforation accuracy, efficiency, and adaptability. While current shoe upper perforation devices on the market have achieved a certain degree of mechanization, they still have many shortcomings in practical applications. For example, some devices struggle to adapt to and fix shoe uppers of different materials, thicknesses, or shapes during the perforation process, leading to perforation position misalignment, burrs at the hole edges, or material tearing. Furthermore, most devices lack efficient waste removal and multi-angle perforation capabilities, limiting their applicability in complex shoe designs.

[0003] A search revealed a shoe upper processing perforation device with publication number CN220734577U, authorized on April 9, 2024. This device, through the cooperation of a movable rod, pressure roller, and torsion spring, can automatically flatten and fix the shoe upper before perforation, effectively reducing the impact of wrinkles on perforation accuracy. However, this structure relies on mechanical linkage for clamping. For highly elastic or irregularly structured flyknit shoe uppers, the pressure roller cannot provide a uniform and stable clamping force, easily causing local slippage. Furthermore, its perforation direction is fixed vertically downwards, which cannot meet the non-vertical perforation requirements of modern shoe upper designs such as oblique holes and curved holes, limiting the device's versatility.

[0004] A search revealed a shoe upper perforation device with publication number CN223247700U, authorized on August 22, 2025. This device utilizes a rotatable slide beam and a servo motor to drive the overall perforation mechanism to rotate around an axis, enabling multi-angle perforation and improving adaptability to diverse shoe upper designs. However, this solution only addresses the perforation angle issue and lacks an effective shoe upper positioning and debris removal mechanism. In actual operation, manual positioning of the shoe upper is still required, and perforation debris easily accumulates on the worktable, affecting subsequent perforation accuracy and increasing cleaning and maintenance burdens, making efficient continuous production difficult.

[0005] The aforementioned problems indicate that existing shoe upper perforation devices have not yet formed an integrated solution in terms of adaptive clamping, multi-angle perforation, and waste management, making it difficult to meet the comprehensive needs of modern footwear manufacturing for high-precision, high-efficiency, and intelligent production. Therefore, this utility model provides a novel shoe upper perforation device, aiming to integrate intelligent positioning, multi-dimensional adjustment, and automatic waste removal functions to overcome the shortcomings of existing technologies and improve perforation quality and production efficiency. Utility Model Content

[0006] The purpose of this utility model is to provide a shoe upper perforation device to solve the problems mentioned in the background art, such as the difficulty of stable clamping of shoe uppers of different materials, thicknesses or irregular structures during the perforation process, resulting in perforation position displacement, material tearing or burrs on the hole edge; at the same time, the lack of multi-angle perforation capability and automatic chip removal function, which affects the perforation accuracy, efficiency and equipment versatility.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a shoe upper perforation device, comprising a base platform, an adaptive vacuum adsorption positioning component, a multi-degree-of-freedom perforation actuator, and an integrated negative pressure debris removal system; the upper surface of the base platform is provided with a hollowed-out grid area, and an adaptive vacuum adsorption positioning component is fixedly installed below the hollowed-out grid area. This component includes a flexible silicone adsorption pad, a zone control solenoid valve group, and a negative pressure chamber. The flexible silicone adsorption pad covers the hollowed-out grid area, and its bottom is connected to the negative pressure chamber through a sealing flange. The negative pressure chamber is provided with multiple independent air chambers, each of which is connected to the zone control solenoid valve group through an air pipe. The zone control solenoid valve group is electrically connected to a central controller and is used to selectively open the negative pressure channel of the corresponding area according to the shoe upper contour recognition result; a column support is vertically fixed on one side of the base platform, and a horizontal beam is installed on the top of the column support. A slide block is slidably connected to the horizontal beam, and the slide block is driven by a first servo motor through a ball screw pair to realize translational movement along the X-axis; a swing arm is hinged to the lower end of the slide block. The rotating shaft of the swing arm is connected to the output shaft of the second servo motor, which is fixed inside the slide block and drives the swing arm to rotate around the Y-axis. A rotary punching head assembly is fixedly connected to the end of the swing arm. The rotary punching head assembly includes a hollow spindle, a high-speed electric spindle, and an angle encoder. The hollow spindle is mounted on the end of the swing arm through a bearing seat, and a worm gear is sleeved on its outer circumference. The worm gear meshes with the worm at the output end of the third servo motor. The third servo motor is fixed to the side of the swing arm and drives the hollow spindle to rotate around the Z-axis, thereby adjusting... The spatial pointing angle of the drilling head; the high-speed electric spindle is installed inside the hollow spindle, and its output end is equipped with a replaceable drilling bit; the integrated negative pressure chip removal system includes an annular chip collection hood, a flexible chip guide tube and a central negative pressure fan. The annular chip collection hood is fixedly sleeved on the outside of the high-speed electric spindle, and its inner edge is provided with a downward-facing annular suction port. The annular suction port faces the drilling operation area. One end of the flexible chip guide tube is connected to the chip outlet at the top of the annular chip collection hood, and the other end is connected to the air inlet of the central negative pressure fan. The exhaust end of the central negative pressure fan is connected to the filter dust collection box.

[0008] Preferably, the upper surface of the flexible silicone adsorption pad is provided with a micro-bump array structure. The height of the micro-bumps is 0.3-0.8 mm, the spacing between adjacent micro-bumps is 2-5 mm, and the micro-bumps are integrally molded from silicone material with a Shore hardness of 30A-50A. A metal support mesh is embedded at the bottom of the micro-bumps. The metal support mesh is fixed in the mounting groove at the upper edge of the negative pressure cavity by screws, ensuring that the adsorption pad maintains shape stability under negative pressure while having local deformation capability.

[0009] Preferably, the partition control solenoid valve group consists of eight two-position three-way solenoid valves. The air inlet of each solenoid valve is connected in parallel to the same vacuum source, and the air outlet is respectively connected to eight independent fan-shaped air chambers in the negative pressure cavity. The eight fan-shaped air chambers are evenly distributed along the circumference, and a sealing partition is provided between every two adjacent air chambers. The height of the sealing partition is consistent with the height of the inner wall of the negative pressure cavity to prevent airflow interference.

[0010] Preferably, a linear guide pair is provided between the slide and the horizontal beam. The linear guide pair includes a guide rail fixed to the lower surface of the horizontal beam and a slider fixed to the top of the slide. The slider slides in cooperation with the guide rail. The two ends of the ball screw pair are supported by bearing seats between the column bracket and the support plate at the other end of the beam. The screw nut is fixedly connected to the bottom of the slide.

[0011] Preferably, the hinge shaft between the swing arm and the slide is a hollow structure, with a flexible cable for transmitting control signals and power passing through it. One end of the flexible cable is connected to the central controller, and the other end is connected to the high-speed electric spindle and each servo motor. Both ends of the hinge shaft are fixed to the slide and the swing arm through rotary sealing joints to prevent the cable from getting tangled.

[0012] Preferably, the inner diameter of the annular chip collection hood is 5-10 mm larger than the outer diameter of the high-speed electric spindle, and its annular suction port is provided with a guide slope inclined at 15°-30°. The guide slope converges towards the center of the drilling point. The flexible chip guide tube is made of corrugated stainless steel hose, and its inner wall is coated with an antistatic coating to prevent debris from adhering and clogging.

[0013] Preferably, a radial gap is provided between the outer shell of the high-speed electric spindle and the inner wall of the hollow spindle, and the radial gap is filled with graphite grease. Double-lip seals are installed at both ends of the hollow spindle to prevent dust from entering the bearing area. The angle encoder is fixed to the rear end of the hollow spindle, and its code disk is coaxially connected to the hollow spindle to provide real-time feedback of the rotation angle of the punch head to the central controller.

[0014] Preferably, the hollowed-out grid area of ​​the base platform is provided with a liftable limit block. The liftable limit block is driven by a micro electric push rod. The cylinder of the micro electric push rod is fixed inside the base platform, and the top of the piston rod is connected to the bottom of the limit block. When the limit block is raised, it is 2-4mm higher than the surface of the flexible silicone adsorption pad, which is used to assist in the initial positioning of the shoe upper.

[0015] Preferably, the central controller is a PLC control system, whose input terminal is connected to an industrial camera. The industrial camera is fixed on the upper part of the column support, with the lens facing the base platform, and is used to collect images of the shoe upper and identify contour features. The PLC control system generates zone adsorption commands, perforation path coordinates and multi-axis linkage parameters according to the identification results, and synchronously starts and stops the central negative pressure fan.

[0016] The beneficial effects of this utility model are: it solves the problem that existing equipment has difficulty in achieving stable clamping of shoe uppers of different materials, thicknesses or irregular structures during the punching process, resulting in punching position deviation, material tearing or hole edge burrs; at the same time, it lacks multi-angle punching capability and automatic chip removal function, which affects punching accuracy, efficiency and equipment versatility. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a shoe upper perforation device according to the present invention.

[0018] Figure 2 This is a side view sectional diagram of a shoe upper perforation device according to the present invention.

[0019] Figure 3 This is a front view sectional view of the shoe upper perforation device of this utility model.

[0020] The attached diagram is labeled as follows: 1. Base platform; 2. Hollowed-out grid area; 3. Flexible silicone adsorption pad; 4. Negative pressure chamber; 5. Zoned control solenoid valve group; 6. Column support; 7. Horizontal beam; 8. Slide; 9. First servo motor; 10. Swing arm; 11. Second servo motor; 12. Hollow spindle; 13. Worm gear; 14. Third servo motor; 15. High-speed electric spindle; 16. Drill bit; 17. Annular chip collection hood; 18. Flexible chip guide tube; 19. Central negative pressure fan; 20. Central controller. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Specific implementation examples are given below.

[0023] See Figures 1-3 The specific implementation of the shoe upper perforation device of this utility model is as follows: The device as a whole includes a base platform 1, an adaptive vacuum adsorption positioning component, a multi-degree-of-freedom perforation actuator, and an integrated negative pressure debris removal system; the base platform 1 is a rectangular metal plate structure, and a hollowed-out grid area 2 is provided in the middle area of ​​its upper surface. The hollowed-out grid area 2 is composed of multiple regularly arranged through holes with a diameter of 3mm and a spacing of 5mm, forming a uniformly distributed breathable grid structure; the adaptive vacuum adsorption positioning component is fixedly installed below the hollowed-out grid area 2. The component includes a flexible silicone adsorption pad 3, a negative pressure chamber 4, and a zone control solenoid valve group 5; the flexible silicone adsorption pad 3 The entire upper surface of the hollowed-out grid area 2 is covered, and its edge is sealed to the upper edge of the negative pressure chamber 4 through a sealing flange to ensure that a closed chamber is formed between the two. The flexible silicone adsorption pad 3 is integrally molded from silicone material with a Shore hardness of 40A. Its upper surface has a micro-bump array structure with a micro-bump height of 0.5mm and a spacing of 3.5mm between adjacent micro-bumps. A layer of stainless steel metal support mesh with a thickness of 0.8mm is embedded at the bottom of the flexible silicone adsorption pad 3. The metal support mesh is fixed in the annular mounting groove opened at the upper edge of the negative pressure chamber 4 by four M4 screws to enhance the structural stability of the adsorption pad under negative pressure and allow local elastic deformation. The negative pressure chamber 4 is a cylindrical shell structure, and its interior is divided into eight independent sector-shaped air chambers by eight radially arranged sealing partitions. The central angle of each sector-shaped air chamber is 45°. The height of the sealing partitions is the same as the height of the inner wall of the negative pressure chamber 4 to prevent airflow interference between the air chambers. The bottom of each independent sector-shaped air chamber is connected to a two-position three-way solenoid valve in the partition control solenoid valve group 5 through an independent air pipe. The partition control solenoid valve group 5 contains a total of eight two-position three-way solenoid valves. The air inlets of all solenoid valves are connected in parallel to the same external vacuum source, and the air outlets are respectively connected to the eight independent sector-shaped air chambers. The partition control solenoid valve group 5 is electrically connected to the central controller 20 through electrical circuits. The central controller 20 is a programmable logic controller (PLC). Its input terminal is connected to an industrial camera. The industrial camera is fixedly installed on the upper part of the column bracket 6, and the lens is vertically facing the hollow grid area 2 of the base platform 1 to collect images of the shoe upper placed on the flexible silicone adsorption pad 3. A column support 6 is vertically welded to one side of the base platform 1. A horizontal beam 7 is fixedly installed on the top of the column support 6. A guide rail portion of a linear guide pair is fixedly installed on the lower surface of the horizontal beam 7 along the X-axis. A slider that slides with the guide rail is fixedly installed on the top of the slide block 8, allowing the slide block 8 to slide along the X-axis below the horizontal beam 7. The bottom of the slide block 8 is fixedly connected to the screw nut of the ball screw pair by bolts. The two ends of the ball screw pair are supported by bearing seats between the column support 6 and the support plate at the other end of the horizontal beam 7. One end of the screw is connected to the output shaft of the first servo motor 9 through a coupling. The first servo motor 9 is fixedly installed on the side of the column support 6 and drives the slide block 8 to translate along the X-axis by rotating the screw. The lower end of the slide 8 is connected to the swing arm 10 via a hinge shaft. The hinge shaft is a hollow structure, and its two ends are fixed in the corresponding mounting holes of the slide 8 and the swing arm 10 respectively through rotary sealing joints. A flexible cable runs through the hinge shaft. One end of the flexible cable is connected to the central controller 20, and the other end is connected to the high-speed electric spindle 15, the second servo motor 11, and the third servo motor 14 for transmitting control signals and power. The second servo motor 11 is fixedly installed inside the slide 8, and its output shaft passes through the side wall of the slide 8 and is coaxially connected to the hinge shaft for driving the swing arm 10 to rotate around the Y-axis. A rotary punching head assembly is fixedly connected to the end of the swing arm 10. This assembly includes a hollow spindle 12, a high-speed electric spindle 15, and an angle encoder. The hollow spindle 12 is installed in the bearing seat at the end of the swing arm 10 through two deep groove ball bearings. The hollow spindle 12 is fixed to the outer circumference of the worm gear 13 via a key connection. The third servo motor 14 is fixed to the side of the swing arm 10, and a worm gear is installed at its output end. The worm gear meshes with the worm gear 13, and the hollow spindle 12 is driven to rotate around the Z-axis by the forward and reverse rotation of the third servo motor 14. The high-speed electric spindle 15 passes through the inner hole of the hollow spindle 12, and a radial gap of 1.2mm is left between its outer shell and the inner wall of the hollow spindle 12. The gap is filled with graphite grease. Double-lip sealing rings are installed at both ends of the hollow spindle 12 to prevent external dust from entering the bearing area. A replaceable drilling bit 16 is installed at the output end of the high-speed electric spindle 15 via an ER chuck. The type of drilling bit 16 is selected according to the material of the shoe upper, including but not limited to carbide drill bits, hollow punch cutters, or laser-assisted hot melt drill bits. The integrated negative pressure chip removal system includes an annular chip collection hood 17, a flexible chip guide tube 18, and a central negative pressure fan 19. The annular chip collection hood 17 is a circular shell with an inner diameter 7mm larger than the outer diameter of the high-speed electric spindle 15. It is fixed to the outer shell of the high-speed electric spindle 15 by screws. The lower edge of the inner ring of the annular chip collection hood 17 is provided with an annular suction port facing the drilling area. An inclined 20° guide surface is machined on its edge, which converges towards the center of the drilling point. The top of the annular chip collection hood 17 is provided with a chip outlet. One end of the flexible chip guide tube 18 is connected to the chip outlet by a clamp, and the other end is connected to the air inlet of the central negative pressure fan 19. The flexible chip guide tube 18 is a corrugated stainless steel flexible hose with an inner diameter of 25mm and its inner wall is coated with a polytetrafluoroethylene antistatic coating. The exhaust end of the central negative pressure fan 19 is connected to a filter dust collection box through a pipe to collect the debris and dust generated during the drilling process. The base platform 1 has four adjustable limit blocks around its hollow mesh area 2. Each limit block is driven by a miniature electric push rod. The cylinder of the miniature electric push rod is fixed inside the mounting cavity of the base platform 1, and the top of the piston rod is threaded to the bottom of the limit block. When the limit block is in the raised state, its upper surface is 3mm higher than the upper surface of the flexible silicone adsorption pad 3, which is used to initially position the placed shoe upper and prevent it from shifting significantly before adsorption. An angle encoder is fixedly installed on the rear end face of the hollow spindle 12. Its code disk is coaxially connected to the hollow spindle 12 through a set screw, which is used to detect the rotation angle of the hollow spindle 12 in real time and feed the angle signal back to the central controller 20. In actual operation, the operator first places the shoe upper to be punched on the flexible silicone adsorption pad 3. At this time, the four adjustable limit blocks are in the raised state, which initially limits the edge of the shoe upper. The industrial camera is activated to acquire images of the shoe upper and transmits the image data to the central controller 20. The image processing module built into the central controller 20 identifies the contour of the shoe upper and determines the actual position, size and irregular area distribution of the shoe upper on the base platform 1. According to the identification results, the central controller 20 generates a partition adsorption command and controls the corresponding two-position three-way solenoid valve in the partition control solenoid valve group 5 to open, so that the fan-shaped independent air chambers in the negative pressure chamber 4 corresponding to the area covered by the shoe upper generate negative pressure. The shoe upper is locally adaptively adsorbed and fixed through the hollowed-out mesh area 2 and the flexible silicone adsorption pad 3. The area not covered by the shoe upper is kept at normal pressure to avoid ineffective energy consumption. Subsequently, the central controller 20 generates drilling path coordinates and multi-axis linkage control commands based on preset drilling process parameters and shoe upper contour information; the first servo motor 9 starts, driving the slide 8 to move along the X-axis to the X-coordinate position of the target drilling point; the second servo motor 11 starts, driving the swing arm 10 to rotate around the Y-axis, adjusting the pitch angle of the drilling bit 16; the third servo motor 14 starts, driving the hollow spindle 12 to rotate around the Z-axis through the meshing transmission of the worm gear 13 and the worm, adjusting the azimuth angle of the drilling bit 16, so that the spatial orientation of the drilling bit 16 is precisely aligned with the target drilling point; the angle encoder monitors the rotation angle of the hollow spindle 12 in real time and feeds the data back to the central controller 20, forming a closed-loop control; when the drilling bit 16 reaches the predetermined position, the high-speed electric spindle 15 starts, driving the drilling bit 16 to rotate at high speed, while pressing down along the Z-axis to complete the drilling action; During the punching process, the central negative pressure fan 19 starts synchronously, creating a negative pressure environment inside the annular chip collection hood 17. The chips and dust generated during punching are sucked in by the annular suction port under the negative pressure, guided by the guide slope and then enter the flexible chip guide tube 18, and finally transported to the filter dust collection box for centralized collection. After punching is completed, the high-speed electric spindle 15 stops running, each servo motor drives the punching head assembly to return to the initial position, the zone control solenoid valve group 5 closes all solenoid valves, releases the negative pressure adsorption, and the operator removes the punched shoe upper, completing one work cycle. The mechanical, electrical, and pneumatic connections between the aforementioned components are arranged according to the aforementioned structural relationships. All moving parts are equipped with travel limit switches or software limit protection to ensure safe operation of the equipment. The central controller 20 interacts with each servo motor driver, solenoid valve, and industrial camera via the Modbus communication protocol to achieve automated collaborative control of the entire machine. In order to enable those skilled in the art to fully understand and implement the technical solution of this utility model, the following describes the operating principle and technical effect mechanism of this utility model in detail, taking a typical application scenario—perforating high-elasticity flyknit shoe uppers with multi-angle irregular holes. In this application scenario, the shoe upper to be processed is a flyknit structure made of high-elasticity yarn, with an overall thickness of about 1.2mm. The surface has local hollow areas and irregular curved contours. Traditional pressure plate clamping can easily cause material slippage or local stretching deformation, which can lead to perforation misalignment or edge tearing. To address this situation, the operator lays the shoe upper flat on the flexible silicone adsorption pad 3. At this time, four liftable limit blocks are driven by micro electric push rods to rise to a position 3mm above the upper surface of the flexible silicone adsorption pad 3, forming an initial physical limit on the edges of the shoe upper to prevent it from shifting significantly before image recognition. Subsequently, the industrial camera fixed on the upper part of the column bracket 6 is activated to capture images of the shoe upper vertically downwards and transmits the image data to the central controller 20 in real time. The image processing algorithm built into the central controller 20 is based on edge detection and template matching technology to accurately extract the actual contour, coverage area and hollow area distribution of the shoe upper, and determines the spatial position and posture of the shoe upper on the base platform 1 accordingly. Based on the above identification results, the central controller 20 generates a zone control command, opening only the two-position three-way solenoid valves corresponding to the fan-shaped independent air chambers actually covered by the shoe upper in the negative pressure chamber 4; for example, if the shoe upper mainly covers the 2nd, 3rd, and 4th fan-shaped areas of the negative pressure chamber 4, only the three solenoid valves with corresponding numbers in the zone control solenoid valve group 5 are switched to the negative pressure conduction state, while the remaining solenoid valves remain normally closed, so that the uncovered areas maintain normal pressure; thus, under the action of the micro-protrusion array structure of the flexible silicone adsorption pad 3, a local vacuum adsorption force is formed only in the solid area of ​​the shoe upper; the height of the micro-protrusions The 0.5mm design increases the friction coefficient of the adsorption contact surface, preventing slippage. On the other hand, it can generate micron-level elastic fitting under negative pressure, adapting to the micro-undulations of the flyknit material surface. Meanwhile, the 0.8mm thick stainless steel metal support mesh embedded at the bottom is rigidly fixed to the annular mounting groove on the upper edge of the negative pressure cavity 4 by M4 screws. While providing overall support rigidity, it allows each micro-area to deform independently under negative pressure, thereby achieving "adaptive fitting and adsorption" for irregular curved shoe uppers, effectively avoiding inaccurate perforation or material damage caused by local suspension or excessive stretching. After positioning is completed, the central controller 20 retrieves the pre-stored perforation process database and, combined with the current shoe upper contour information, dynamically plans a three-dimensional path containing multiple non-perpendicular perforation points. Taking one of the holes requiring a 30° tilt angle as an example, the central controller 20 first controls the first servo motor 9 to drive the ball screw pair, causing the slide 8 to move along the X-axis direction below the horizontal beam 7 to the X coordinate of the target hole. Then, the second servo motor 11 is started, and its output shaft drives the hinge shaft to rotate, causing the swing arm 10 to swing upward around the Y-axis to the set pitch angle. At the same time, the third servo motor 14 is started. The output worm gear drives the worm wheel 13, which is fixed to the hollow spindle 12, so that the hollow spindle 12 rotates around the Z-axis to the required azimuth angle. During this process, the angle encoder fixed to the rear end of the hollow spindle 12 collects the rotation angle signal in real time and feeds it back to the central controller 20, forming a closed-loop control circuit to ensure that the spatial pointing error of the drilling bit 16 is controlled within ±0.1°. When the three axes are in the linkage position, the high-speed electric spindle 15 starts, automatically matches the speed according to the shoe upper material (e.g., 8000rpm carbide drill bit is used for knitted material), and presses down along the Z-axis to complete the drilling. Simultaneously with the drilling action, the central negative pressure fan 19 starts, establishing a stable negative pressure field of -3kPa inside the annular chip collection hood 17. The fiber debris and dust generated during drilling are first captured by the annular suction port on the lower edge of the inner ring of the annular chip collection hood 17 under the negative pressure suction. This annular suction port has a 20° inclined guide surface at its edge, and its geometric configuration converging towards the center of the drilling point guides the airflow to form a centripetal vortex, significantly improving the collection efficiency of lightweight, loose debris. The captured debris is then transported to the filter dust collection box via the flexible chip guide tube 18. The flexible chip guide tube 18 uses a corrugated stainless steel flexible hose with an inner diameter of 25mm. Its inner wall is coated with a polytetrafluoroethylene antistatic coating, effectively inhibiting debris from adhering to the tube wall due to electrostatic adsorption, ensuring the long-term unobstructed chip discharge channel. This integrated negative pressure chip removal system starts and stops strictly synchronously with the drilling action, avoiding interference from debris accumulation on subsequent visual identification of the hole position and eliminating the manual chip removal step, thus ensuring the accuracy and stability of continuous operation. After punching is completed, each servo motor drives the punching head assembly to return to the safe initial position according to the program instructions. The zone control solenoid valve group 5 closes all solenoid valves, releases the negative pressure adsorption, and the limit block descends synchronously to be flush with the flexible silicone adsorption pad 3. The operator can then remove the flyknit upper that has been precisely punched at multiple angles without any obstruction. The entire process does not require manual intervention for positioning or cleaning, and it can stably cope with complex upper structures such as high elasticity, irregularity, and multiple holes. This fully demonstrates the synergistic effect of this utility model in adaptive clamping, multi-dimensional space punching, and intelligent waste management.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A shoe upper perforation device, characterized in that, The system includes a base platform (1), an adaptive vacuum adsorption positioning component, a multi-degree-of-freedom drilling actuator, and an integrated negative pressure chip removal system. The upper surface of the base platform (1) has a perforated grid area (2). The adaptive vacuum adsorption positioning component is fixedly installed below the perforated grid area (2). This component includes a flexible silicone adsorption pad (3), a zoned control solenoid valve group (5), and a negative pressure chamber (4). The flexible silicone adsorption pad (3) covers the perforated grid area (2), and its bottom is connected to the negative pressure chamber (4) through a sealing flange. Multiple independent... Each independent air chamber is connected to a zone control solenoid valve group (5) via an air pipe. The zone control solenoid valve group (5) is electrically connected to the central controller (20). A column support (6) is vertically fixed on one side of the base platform (1). A horizontal beam (7) is installed on the top of the column support (6). A slide block (8) is slidably connected to the horizontal beam (7). The slide block (8) is connected to the first servo motor (9) via a ball screw pair. A swing arm (10) is hinged to the lower end of the slide block (8). The rotation shaft of the swing arm (10) is connected to the second servo motor (11). The output shaft, the second servo motor (11) is fixed inside the slide (8); the end of the swing arm (10) is fixedly connected to a rotary drilling head assembly, the rotary drilling head assembly includes a hollow spindle (12), a high-speed electric spindle (15) and an angle encoder, the hollow spindle (12) is installed on the end of the swing arm (10) through a bearing seat, and a worm gear (13) is sleeved on its outer circumference, the worm gear (13) meshes with the worm at the output end of the third servo motor (14), the third servo motor (14) is fixed to the side of the swing arm (10); the high-speed electric spindle (15) passes through the hollow spindle (12) and the second servo motor (11) is fixed inside the slide (8); the high-speed electric spindle (15) passes through the hollow spindle (12) and the second servo motor (11) is fixed inside the slide (8); the output shaft, ...2) is fixed inside the slide (8) and the third servo motor (14) is fixed inside the slide (8); the output shaft, the second servo motor (11) is fixed inside the slide (8) and the third servo motor (14) is fixed inside the slide (8); the output shaft, the second servo motor (11) is fixed inside the slide (8) and the third servo motor (15) is fixed inside the slide (8); the output shaft, the second servo motor (12) is fixed inside the slide (8) and the third servo motor (14) is fixed inside the slide (8) and the second servo motor (15) is fixed inside the slide (8); the output shaft, the second servo motor ( 2) Inside, a replaceable drilling bit (16) is installed at its output end; the integrated negative pressure chip removal system includes an annular chip collection cover (17), a flexible chip guide tube (18) and a central negative pressure fan (19). The annular chip collection cover (17) is fixedly sleeved on the outside of the high-speed electric spindle (15). Its inner edge is provided with a downward-facing annular suction port. The annular suction port faces the drilling operation area. One end of the flexible chip guide tube (18) is connected to the chip outlet at the top of the annular chip collection cover (17), and the other end is connected to the air inlet of the central negative pressure fan (19). The exhaust end of the central negative pressure fan (19) is connected to the filter dust removal box.

2. The shoe upper perforation device according to claim 1, characterized in that: The upper surface of the flexible silicone adsorption pad (3) is provided with a micro-bump array structure. The height of the micro-bump is 0.5 mm and the spacing between adjacent micro-bumps is 3.5 mm. The micro-bump is integrally formed with silicone material with a Shore hardness of 40A. A metal support mesh is embedded at its bottom. The metal support mesh is fixed in the mounting groove on the upper edge of the negative pressure cavity (4) by screws.

3. The shoe upper perforation device according to claim 1, characterized in that: The partition control solenoid valve group (5) consists of eight two-position three-way solenoid valves. The air inlet of each solenoid valve is connected in parallel to the same vacuum source, and the air outlet is connected to eight fan-shaped independent air chambers in the negative pressure cavity (4). The eight fan-shaped independent air chambers are evenly distributed along the circumference, and a sealing partition is provided between every two adjacent air chambers. The height of the sealing partition is consistent with the height of the inner wall of the negative pressure cavity (4).

4. The shoe upper perforation device according to claim 1, characterized in that: A linear guide pair is provided between the slide (8) and the horizontal beam (7). The linear guide pair includes a guide rail fixed to the lower surface of the horizontal beam (7) and a slider fixed to the top of the slide (8). The slider slides in cooperation with the guide rail. The two ends of the ball screw pair are supported by bearing seats between the column bracket (6) and the support plate at the other end of the beam. The screw nut is fixedly connected to the bottom of the slide (8).

5. The shoe upper perforation device according to claim 1, characterized in that: The hinge shaft between the swing arm (10) and the slide (8) is a hollow structure, with a flexible cable for transmitting control signals and power inside. One end of the flexible cable is connected to the central controller (20), and the other end is connected to the high-speed electric spindle (15) and each servo motor. Both ends of the hinge shaft are fixed to the slide (8) and the swing arm (10) through rotary sealing joints.

6. The shoe upper perforation device according to claim 1, characterized in that: The inner diameter of the annular chip collection cover (17) is 7 mm larger than the outer diameter of the high-speed electric spindle (15). Its annular suction port is provided with a 20° inclined guide surface. The guide surface converges towards the center of the drilling point. The flexible chip guide tube (18) is made of corrugated stainless steel hose and its inner wall is coated with an antistatic coating.

7. The shoe upper perforation device according to claim 1, characterized in that: The outer shell of the high-speed electric spindle (15) and the inner wall of the hollow spindle (12) are provided with a radial gap of 1.2 mm. The radial gap is filled with graphite grease. Double-lip seals are installed at both ends of the hollow spindle (12). The angle encoder is fixed to the rear end of the hollow spindle (12), and its code disk is coaxially connected to the hollow spindle (12).

8. The shoe upper perforation device according to claim 1, characterized in that: The hollow grid area (2) of the base platform (1) is provided with a liftable limit block. The liftable limit block is driven by a micro electric push rod. The cylinder of the micro electric push rod is fixed inside the base platform (1). The top of the piston rod is connected to the bottom of the limit block. When the limit block is raised, it is 3mm higher than the surface of the flexible silicone adsorption pad (3).

9. A shoe upper perforation device according to claim 1, characterized in that: The central controller (20) is a PLC control system. Its input terminal is connected to an industrial camera. The industrial camera is fixed on the upper part of the column support (6) with the lens facing the base platform (1). It is used to collect shoe surface images and identify contour features. The PLC control system generates partition adsorption instructions, perforation path coordinates and multi-axis linkage parameters according to the identification results, and starts and stops the central negative pressure fan (19) simultaneously.

10. A shoe upper perforation device according to claim 1, characterized in that: The hollowed-out mesh area (2) is composed of multiple regularly arranged through holes with a diameter of 3 mm and a spacing of 5 mm.

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