Lacing hole positioning and punching device

Abstract

This utility model relates to a shoelace hole positioning and punching device, including a frame with a hydraulic cylinder at the upper end. The piston rod of the hydraulic cylinder is connected to a punching mechanism. The punching mechanism has a cavity, and a lifting rod is installed in the cavity. Tension springs are installed between both ends of the lifting rod and the top wall of the cavity. Adjusting bolts are inserted into screw holes, with the lower ends of the adjusting bolts abutting against the lifting rod. Several upper sliders are installed in a sliding groove. The bottom wall of the cavity has a strip hole aligned with the lifting rod, and several lower sliders are installed in the strip hole. The upper and lower sliders are hinged together by a multi-link. The bottom of the lower slider has a groove, and a punching post is inserted into the groove. The punching device of this application, through the cooperation of the lifting rod, tension springs, and bolts, can accurately measure and flexibly adjust the shoelace hole spacing, eliminating the dependence on multiple sets of molds, solving the problems of low efficiency, high labor costs, and easy loss and difficulty in using molds by manual measurement, and reducing operation and management costs.

Description

Technical Field

[0001] This utility model relates to the field of shoe punching equipment, and in particular to a shoelace hole positioning and punching device. Background Technology

[0002] In the shoe manufacturing process, the processing of shoelace holes is a crucial step. Due to differences in shoe size and style, the spacing of shoelace holes needs to be flexibly adapted. Traditional processing methods rely on manual measurement and drilling, which is inefficient, labor-intensive, and requires the purchase of multiple sets of molds to accommodate different spacings. This results in problems such as large inventory, easy loss, and inconvenience in retrieval, increasing operational and management costs.

[0003] Chinese utility model patent CN222888685U discloses a shoelace hole punching device. It uses an external power source to drive a power block, which in turn moves a punching rod via an eccentric wheel and transmission block. The device can be adjusted using different angled tracks on a moving frame according to the number of holes to be punched in the shoe upper. However, this device still has drawbacks: the track direction is varied, the moving limit block experiences high friction, and adjustment is cumbersome; after long-term use, the inner wall of the track is easily worn and deformed by the limit block, causing changes in track width and uneven wear, resulting in large errors in the shoelace hole spacing and affecting the yield rate of shoe uppers. Summary of the Invention

[0004] This utility model provides a shoelace hole positioning and punching device to solve the problems of the above-mentioned shoelace hole punching devices, such as difficulty in adjustment, wear and deformation, and uneven shoelace holes.

[0005] The present invention adopts the following technical solution: A shoelace hole positioning and punching device includes a frame with a hydraulic cylinder at its upper end. The piston rod of the hydraulic cylinder is connected to a punching mechanism. The punching mechanism has a cavity with a lifting rod inside. Tension springs are provided between both ends of the lifting rod and the top wall of the cavity. The top wall of the cavity has a screw hole aligned with the middle end of the lifting rod, and an adjusting bolt is inserted into the screw hole, with its lower end abutting against the lifting rod. The bottom surface of the lifting rod has a sliding groove extending along its length, with several upper sliding blocks inside the sliding groove. The bottom wall of the cavity has a strip hole aligned with the lifting rod, with several lower sliding blocks inside the strip hole, one more lower sliding block than upper sliding blocks. Multiple connecting rods are provided between the upper and lower sliding blocks, and the connecting rods are sequentially hinged end-to-end. The bottom of the lower sliding block has a groove, with a punching post inserted into the groove. Magnets that attract each other are respectively located in the bottom of the groove and the top of the punching post.

[0006] Furthermore, the lower end of the frame is provided with a worktable, which has mounting slots corresponding to the left and right ends of the drilling mechanism, and springs for protecting the worktable are provided in the mounting slots.

[0007] Furthermore, the aforementioned sliding groove is provided with seven upper sliding blocks, and the strip-shaped hole is provided with eight lower sliding blocks.

[0008] Furthermore, a control panel is provided on the outer wall of the aforementioned rack.

[0009] Furthermore, the aforementioned punching mechanism is provided with a detachable top cover, which is connected to the piston rod of the aforementioned hydraulic cylinder.

[0010] Furthermore, the adjusting bolt is provided with a nut at the top, and the outer peripheral wall of the adjusting bolt is provided with anti-slip grooves.

[0011] Furthermore, PVC pads are laid on the aforementioned workbench.

[0012] As can be seen from the above description of the structure of this utility model, compared with the prior art, this utility model has the following advantages: 1. The punching device of this application, through the cooperation of lifting rod, tension spring and bolt, can accurately measure and flexibly adjust the spacing of shoelace holes, get rid of the dependence on multiple sets of molds, solve the problems of low efficiency, high labor cost and easy loss and difficulty in use of molds by manual measurement, and reduce operation and management costs.

[0013] 2. The adjustment structure of the punching device in this application is more reasonable, which can reduce the adjustment friction, make the operation simple, and ensure that the spacing accuracy is not easily affected by component wear during long-term use, thus ensuring the consistency of shoelace hole processing.

[0014] 3. The punching device of this application effectively avoids spacing errors through precise distance measurement and stable punching, reduces defective products caused by shoelace hole problems in the shoe upper, improves the quality of finished shoes, and enhances the market competitiveness of the products. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the positioning and drilling device of this utility model.

[0016] Figure 2 This is a side view of the positioning and drilling device of this utility model.

[0017] Figure 3 This is a schematic diagram of the punching mechanism of this utility model.

[0018] Figure 4 This is a bottom view of the punching mechanism of this utility model.

[0019] Figure 5 This is a schematic diagram of the structure of the workbench of this utility model.

[0020] Figure 6 This is a schematic diagram of the slider and perforated column of this utility model.

[0021] Figure 7 This is a partial structural diagram of the lifting rod and upper slider of this utility model.

[0022] In the diagram, 1. Frame; 2. Drilling mechanism; 3. Workbench; 11. Hydraulic cylinder; 12. Control panel; 20. Strip hole; 21. Adjusting bolt; 22. Tension spring; 23. Lifting rod; 24. Lower slider; 25. Drilling post; 26. Top cover; 30. Mounting slot; 32. Spring; 200. Cavity; 211. Nut; 230. Sliding groove; 231. Connecting rod; 232. Upper slider; 233. Locking screw; 240. Groove; 31. PVC gasket; 41. First magnet; 42. Second magnet. Detailed Implementation

[0023] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0024] Reference Figures 1-4 A shoelace hole positioning and punching device includes a frame 1, the upper end of which is equipped with a hydraulic cylinder 11, preferably an oil cylinder. The piston rod of the hydraulic cylinder 11 is connected to a punching mechanism 2. There are two hydraulic cylinders 11, which are respectively connected to the left and right ends of the punching mechanism 2. The hydraulic cylinders 11 drive the punching mechanism 2 to rise and fall. The punching mechanism 2 is used for punching holes in the shoe upper. The aforementioned drilling mechanism 2 has a cavity 200, in which a lifting rod 23 is installed. Tension springs 22 are installed between both ends of the lifting rod 23 and the top wall of the cavity 200. The restoring deformation force of the tension springs 22 causes the lifting rod 23 to move upward. A screw hole aligned with the middle end of the lifting rod 23 is provided on the top wall of the cavity 200. An adjusting bolt 21 is inserted into the screw hole, with its lower end abutting against the lifting rod 23. The adjusting bolt 21 is used to adjust the height of the lifting rod 23. A sliding groove 230 extending along the length of the lifting rod 23 is provided on its bottom surface. Several upper sliding blocks 232 are provided within the sliding groove 230. Both ends of the lifting rod 23 are close to the inner wall of the cavity 200 to prevent the upper sliding blocks 232 from falling out of the opening of the sliding groove 230. The bottom wall of the cavity 200 is provided with a linear slot 20 aligned with the lifting rod 23. The slot 20 is straight and contains several sliding blocks 24. The slot 20 is used to limit the sliding blocks 24 to slide back and forth along a straight line. The number of sliding blocks 24 is one more than the number of sliding blocks 232. Multiple connecting rods 231 are provided between the upper sliding block 232 and the lower sliding block 24. The connecting rods 231 are hinged to each other end to end in sequence.

[0025] Reference Figure 3 The bottom of the sliding block 24 is provided with a groove 240, and a perforated post 25 is inserted into the groove 240. Magnets that attract each other are respectively provided in the bottom of the groove 240 and the top of the perforated post 25. A first magnet 41 is fixed in the bottom of the groove 240, and a second magnet 42 is fixed in the top of the perforated post 25. The magnetic poles of the first magnet 41 and the second magnet 42 attract each other. The perforated post 25 is easy to assemble and disassemble quickly, adapts to different types of shoe uppers and shoelace holes, and is simple and convenient to operate.

[0026] Reference Figure 1 , Figure 2 and Figure 5 The lower end of the frame 1 is provided with a worktable 3. The worktable 3 is provided with mounting grooves 30 corresponding to the left and right ends of the drilling mechanism 2. The mounting grooves 30 are provided with springs 32 to protect the worktable 3. The springs 32 have a buffering effect and can protect the drilling column 25 from impact deformation. The worktable 3 is used to lay the shoe upper, which facilitates the punching column 25 to punch holes in the shoe upper.

[0027] Reference Figure 3 The aforementioned sliding groove 230 contains seven upper sliders 232, and the strip-shaped hole 20 contains eight lower sliders 24. From left to right, the first connecting rod 231 has its head hinged to the first lower slider 24 and its tail hinged to the first upper slider 232. The second connecting rod 231 has its head hinged to the first upper slider 232 and its tail hinged to the first connecting rod 231, and its tail hinged to the second lower slider 24. The connecting rods 231 alternately hinge the upper sliders 232 and lower sliders 24 at the head and tail, forming an M-shape. To prevent all the upper sliders 232 from shifting and causing asymmetry, a locking screw 233 is provided in the middle of the lifting rod 23, which holds the centrally located upper slider 232 in place.

[0028] Reference Figure 6 The lower end of the aforementioned perforated post 25 has a tubular structure, and the bottom edge of the perforated post 25 has a cutting edge.

[0029] Reference Figure 3 The aforementioned drilling mechanism 2 is provided with a detachable upper cover 26. The upper cover 26 can be connected to the housing of the drilling mechanism 2 by screws. The upper cover 26 is detachable, which facilitates the maintenance of internal parts. The upper cover 26 is connected to the piston rod of the aforementioned hydraulic cylinder 11 by screws.

[0030] The adjusting bolt 21 is provided with a nut 211 at the top. The outer peripheral wall of the adjusting bolt 21 is provided with anti-slip grooves. The nut 211 makes it easy to squeeze and rotate the adjusting bolt 21.

[0031] The workbench 3 is covered with PVC pads 31, which have a shock-absorbing effect and protect the drilling column 25 from impact deformation.

[0032] Reference Figure 1 The outer wall of the frame 1 is provided with a control panel 12, which is used to send commands to the hydraulic cylinder 11 to operate.

[0033] When drilling, refer to Figure 1Rotate the adjusting bolt 21, and the adjusting bolt presses down the lifting rod 23. The upper slider 232 unfolds through the connecting rods 231 and 231, causing the lower slider 24 to separate. Adjust the lower slider 24 to the required shoelace hole spacing on the shoe upper. The control panel 12 sends a command to the hydraulic cylinder 11 to work and run. The hydraulic cylinder 11 drives the punching mechanism 2 to punch holes in the shoe upper on the worktable 3. When the number of shoelace holes decreases, the punching post 25 near the end can be easily removed. The operation is simple and the structure is reasonably designed.

[0034] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A shoelace hole positioning and punching device, comprising a frame, wherein a hydraulic cylinder is provided at the upper end of the frame, and a punching mechanism is connected to the piston rod of the hydraulic cylinder, characterized in that: The drilling mechanism has a cavity containing a lifting rod. Tension springs are installed at both ends of the lifting rod and the top wall of the cavity. A screw hole aligned with the middle of the lifting rod is located on the top wall of the cavity, and an adjusting bolt is inserted into the screw hole, with its lower end abutting against the lifting rod. A sliding groove extending along the length of the lifting rod is provided on its bottom surface, containing several upper sliding blocks. A strip-shaped hole aligned with the lifting rod is provided on the bottom wall of the cavity, containing several lower sliding blocks, one more than the number of upper sliding blocks. Multiple connecting rods are provided between the upper and lower sliding blocks, and these connecting rods are sequentially hinged end-to-end. A groove is provided at the bottom of the lower sliding block, into which a drilling post is inserted. Magnets that attract each other are located at the bottom of the groove and the top of the drilling post.

2. The shoelace hole positioning and punching device as described in claim 1, characterized in that: The lower end of the frame is provided with a worktable, and the worktable is provided with mounting slots corresponding to the left and right ends of the drilling mechanism. Springs for protecting the worktable are provided in the mounting slots.

3. The shoelace hole positioning and punching device as described in claim 1, characterized in that: The sliding groove is equipped with seven upper sliders, and the strip-shaped hole is equipped with eight lower sliders.

4. The shoelace hole positioning and punching device as described in claim 1, characterized in that: The outer wall of the rack is equipped with a control panel.

5. The shoelace hole positioning and punching device as described in claim 1, characterized in that: The drilling mechanism is equipped with a detachable top cover, which is connected to the piston rod of the hydraulic cylinder.

6. The shoelace hole positioning and punching device as described in claim 1, characterized in that: The adjusting bolt is provided with a nut at the top, and the outer peripheral wall of the adjusting bolt is provided with anti-slip grooves.

7. The shoelace hole positioning and punching device as described in claim 1, characterized in that: The workbench is covered with PVC pads.

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