Apparatus for surface treatment of leather shoes and treatment method thereof

Abstract

The application relates to the technical field of shoe repairing, in particular to a device for leather shoe surface treatment and a treatment method thereof. The positioning workbench comprises a positioning table and a liquid storage tank. Two positioning assemblies are symmetrically arranged at the upper end of the positioning table. The positioning assembly comprises a fixing frame and a flow distribution box. A hollow groove is arranged on the fixing frame. A plurality of rectangular box bodies are slidably arranged in the hollow groove. A clamping block is arranged at the front end of the rectangular box body. A push rod is arranged at the rear end of the clamping block and inserted into the rectangular box body. The filling liquid is used as a power transmission medium. The plurality of clamping blocks are synchronously and flexibly clamped, the clamping force is uniformly distributed on the outer wall of the shoe sole, the stress uneven problem caused by the traditional rigid clamping is effectively avoided, irreversible deformation of the shoe sole is prevented, and the stability of the leather shoe positioning reference is ensured through the multidirectional adhesion of the clamping block and the shoe sole.

Description

Technical Field

[0001] This invention relates to the field of shoe repair technology, specifically to an apparatus and method for surface treatment of leather shoes. Background Technology

[0002] In the field of leather shoe repair and surface treatment, spraying and coloring is a key process to make up for fading and scratches. Its accuracy and efficiency directly depend on the adaptability of clamping and positioning to random-sized leather shoes. In repair scenarios, the leather shoes to be processed are mostly random styles, and there is no uniform standard for the outline of the sole (round toe, square toe, irregular shape, etc.), which poses a challenge to stable clamping.

[0003] To improve the drawbacks of manual hand-held spraying, existing technologies have developed related fixing devices, such as the Chinese invention patent "Coating Fixing Device for Shoe Parts" with application number 201510039061.3. In this technology, a "lower clamp + upper clamp + blade-like object" is used to fix local shoe parts (such as the sole interlayer). However, when the above structure is applied to the overall spraying of randomly sized leather shoes, there are obvious defects: the lower clamp and the blade-like object are both fixed rigid structures, which can only match the standardized contours of local regular parts. It is difficult to achieve a full fit with the irregular and non-regular soles of randomly sized leather shoes, which leads to uneven clamping stress. This not only easily causes irreversible deformation of the sole, but also causes the spraying reference to shift, directly affecting the smoothness and color consistency of the repaired leather shoe surface. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an apparatus and method for surface treatment of leather shoes.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a device for surface treatment of leather shoes, comprising a rotating worktable and a positioning worktable, wherein the positioning worktable is installed on the upper end of the rotating worktable;

[0008] The positioning worktable includes a positioning platform and a liquid storage tank. Two positioning components are symmetrically arranged on the upper end of the positioning platform. The positioning components include a fixing frame and a diversion box. The fixing frame has a slot, and multiple rectangular boxes are slidably arranged in the slot. The front end of the rectangular box is provided with a clamping block, and the rear end of the clamping block is provided with a push rod that is inserted into the interior of the rectangular box. The rear end of the push rod is provided with a first rubber plug located inside the rectangular box. The outer wall of the first rubber plug is tightly fitted with the inner wall of the rectangular box. The interior of the rectangular box is provided with a return spring. One end of the return spring is fixed to the rear end of the rectangular box, and the other end of the return spring is connected to the first rubber plug.

[0009] A cylindrical tube is fixedly installed at the upper end of the liquid storage tank, and the cylindrical tube is connected to the liquid storage tank. Both ends of the liquid storage tank are provided with diversion conduits that are connected to the diversion box. The inner side of the diversion box is provided with multiple flexible conduits that are connected to the rectangular box body. The inside of the cylindrical tube is provided with a second rubber stopper. The outer wall of the second rubber stopper is tightly fitted to the inner wall of the cylindrical tube. The upper end of the second rubber stopper is provided with a pressure rod that penetrates the top seat. The upper end of the pressure rod is provided with a pressure plate. A locking rod is provided on one side of the top seat. The locking rod penetrates the top seat and one end abuts against the pressure rod. The locking rod is threadedly connected to the top seat. The liquid storage tank, diversion conduits, diversion box, flexible conduits, and rectangular box body are all filled with filling liquid.

[0010] To facilitate the adjustment of the positioning table angle, the present invention includes the following improvements: the rotary worktable includes a base and a rotary table; the upper end of the base is provided with a groove; the rotary table is inserted into the groove and rotatably connected to the base via a bearing; an anti-slip pad is provided between the outer wall of the rotary table and the inner wall of the base; a support rod is provided at the lower end of the positioning table; the support rod is fixed to the upper end of the rotary table by screws; multiple positioning plates are provided on the periphery of the base; and multiple handles are provided on the periphery of the rotary table.

[0011] To facilitate assembly of the fixing frame, the present invention includes the following improvements: the liquid storage tank, the diversion box, and the fixing frame are all fixed on the upper part of the positioning platform. The liquid storage tank is located in front of the positioning platform. The fixing frame and the diversion box are symmetrically arranged on the upper part of the positioning platform, and the fixing frame is located inside the diversion box. Positioning seats are fixed at both ends of the fixing frame with screws. The positioning seats are fixed to the upper part of the positioning platform with screws. The two positioning seats at both ends of the diversion box cover the two ends of the empty slot. The upper and lower ends of the rectangular box are provided with guide grooves with rectangular cross sections. The top and bottom of the fixing frame pass through the guide grooves.

[0012] Furthermore, the present invention includes the following improvements: the front end of the rectangular box is provided with a front end cover, the rear end of the front end cover is provided with a cylindrical frame inserted into the rectangular box, the cylindrical frame is threadedly connected to the rectangular box, a sealing ring is embedded in the front end of the front end cover, the sealing ring is penetrated by a push rod, the rear end of the rectangular box is provided with a cavity, a connecting pipe is provided at the rear of the rectangular box, the front end of the connecting pipe is provided with a rear end cover inserted into the cavity, the rear end cover is threadedly connected to the cavity, the connecting pipe is connected to the rectangular box, the end of the reset spring away from the first rubber plug is fixed to the front end of the rear end cover, and the end of the flexible conduit away from the diverter box is connected to the rear end of the connecting pipe.

[0013] To facilitate the adjustment of the spacing between multiple rectangular boxes, the present invention includes an improvement in that a driving assembly for moving the rectangular boxes is provided below the base, the driving assembly including a transmission assembly and two driving plates;

[0014] Two drive plates are symmetrically arranged on the lower end of the positioning platform. Multiple L-shaped limit frames are set at the lower end of the positioning platform, with each L-shaped limit frame located on both sides of the drive plate. A rectangular limit groove is provided on the inner side of the L-shaped limit frame. The two sides of the drive plate are inserted into the rectangular limit groove and slidably connected with the L-shaped limit frame. A sliding groove penetrating the positioning platform is provided at the lower end of the empty groove. A slider penetrating the sliding groove is provided at the lower end of the rectangular box. The slider is slidably connected with the sliding groove. Multiple inclined grooves with different inclinations are symmetrically arranged on the drive plate. The outer ends of the inclined grooves approach each other, and the inner ends of the inclined grooves gradually move away from each other. The bottom end of the slider penetrates the inclined groove and is slidably connected with the inclined groove. The transmission component drives the two drive plates to move synchronously in opposite directions.

[0015] To facilitate the movement of the two drive plates, the present invention includes the following improvements: the transmission assembly comprises a support frame, a drive shaft, a fixed box, and a circular plate. The fixed box is fixed below the positioning platform, and the support frame is fixed at the lower end of the positioning platform. A rotating shaft inserted into the fixed box is vertically arranged at the center of the circular plate. A worm gear is fixedly arranged at the lower end of the rotating shaft. The front end of the drive shaft passes through the support frame and is rotatably connected to the support frame via a bearing. A toggle block is provided at the front end of the drive shaft. The rear end of the drive shaft is inserted into the fixed box and is rotatably connected to the fixed box via a bearing. A worm gear that cooperates with the worm gear is provided at the rear end of the drive shaft. Two connecting rods are symmetrically arranged at the lower edge of the circular plate. Cylindrical protrusions are provided in the middle part of the drive plate and at the edge of the circular plate. The two cylindrical protrusions pass through both ends of the connecting rods and are rotatably connected to both ends of the connecting rods via bearings.

[0016] A method for treating the surface of leather shoes using an apparatus includes the following steps:

[0017] Step 1, device assembly: Assemble the positioning table on the upper part of the rotary table, fix the base in the designated work position, and use the anti-slip pads between the rotary table and the base to form friction positioning so that the rotary table remains stationary when no force is applied.

[0018] Step 2, shoe positioning: Place the shoes to be processed on the upper part of the positioning platform, so that the shoes are between the two fixed frames, and the friction between the soles of the shoes and the surface of the positioning platform is used to achieve initial fixation;

[0019] Step 3, Locking and Fixing: Press the pressure plate with one hand to move the pressure rod down, causing the second rubber stopper to squeeze the filling liquid in the cylindrical tube. The filling liquid enters the rectangular box in sequence through the storage tank, the diversion conduit, the diversion box, the soft conduit, and the adapter pipe. This pushes the first rubber stopper to stretch the return spring and moves the push rod and clamping block closer to the shoe until all the clamping blocks are in contact with the outer wall of the shoe sole. After confirming that the clamping is firm by touch and the deformation of the shoe sole, release the hand supporting the shoe and turn the locking rod clockwise to lock the pressure rod and fix the position of the second rubber stopper and the clamping block.

[0020] Step 4, Multi-angle treatment: Adjust the angle of the positioning platform by rotating the handle of the rotating platform to perform all-round spraying treatment on the surface of the leather shoes;

[0021] Step 5, Unlock and retrieve the item: After processing, turn the locking lever counterclockwise to release the limit on the pressure rod. The reset spring resets and moves the first rubber plug, push rod, and clamping block away from the leather shoe. The second rubber plug rises and resets under the reverse force of the filling liquid. Then, take out the processed leather shoe.

[0022] Furthermore, the improvement of the present invention includes a size adaptation adjustment step: when there is a difference in the size of the leather shoes to be processed, the drive shaft is rotated clockwise, and the circular plate is driven to rotate through the meshing transmission of the worm and the worm wheel. The circular plate pushes the two drive plates to slide synchronously in opposite directions along the rectangular limiting groove of the L-shaped limiting frame to the outside of the positioning platform through the connecting rod. The slider slides along the inclined groove on the drive plate and drives the rectangular box to move along the empty groove and the sliding groove, increasing the distance between the multiple rectangular boxes.

[0023] Alternatively, the drive shaft can be rotated counterclockwise, which in turn drives the rectangular housing to move in the opposite direction through the aforementioned transmission components, reducing the distance between multiple rectangular housings to accommodate different sizes of leather shoes.

[0024] (III) Beneficial Effects

[0025] Compared with the prior art, the present invention provides an apparatus and method for surface treatment of leather shoes, which has the following beneficial effects:

[0026] Stable clamping and shoe protection, ensuring processing accuracy: Using filler liquid as the power transmission medium, multiple sets of clamping blocks are pushed to clamp synchronously and flexibly, so that the clamping force is evenly distributed on the outer wall of the sole. This effectively avoids the problem of uneven stress caused by traditional rigid clamping, and prevents irreversible deformation of the sole. At the same time, the multi-directional fit between the clamping blocks and the sole ensures the stability of the shoe positioning benchmark, avoids benchmark deviation during the spraying process, and ensures the smoothness and color consistency of the repaired shoe surface.

[0027] Wide adaptability, solving the problem of multi-size adaptation: This device can flexibly adjust the spacing between rectangular boxes through the drive component. Combined with the multi-set clamping block design driven by the filling liquid, it can not only adapt to different sizes of leather shoes, but also form a full fit for irregular shoe sole contours such as round toe, square toe, and irregular shape. It completely changes the limitation of the rigid fixed structure in the existing technology that can only match standardized parts, and greatly improves the applicability in the repair of random-size leather shoes.

[0028] Convenient and efficient operation, reducing work intensity: The entire clamping and unlocking process can be completed by operating the pressure plate and locking rod with only one hand. There is no need for complicated multi-step adjustments. The design of the rotating worktable allows the operator to achieve all-round processing without moving shoes or their own position, which greatly simplifies the operation process, improves the efficiency of surface treatment, and reduces the labor intensity of operators. Attached Figure Description

[0029] Figure 1 This is a first-view three-dimensional structural diagram of the present invention;

[0030] Figure 2 This is a second-view three-dimensional structural diagram of the present invention;

[0031] Figure 3 This is a top view of the present invention;

[0032] Figure 4 This is the front view of the present invention;

[0033] Figure 5 This is a schematic diagram of the installation structure of the driver board in this invention;

[0034] Figure 6 For the present invention Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0035] Figure 7 This is a schematic diagram of the mating structure of the worm and worm wheel in this invention;

[0036] Figure 8 This is a schematic diagram of the installation structure of the first rubber stopper in this invention;

[0037] Figure 9 This is a schematic diagram of the installation structure of the second rubber stopper in this invention;

[0038] Figure 10 This is a schematic diagram of the installation structure of the anti-slip pad in this invention.

[0039] In the diagram: 1. Base; 2. Rotary table; 3. Groove; 4. Positioning platform; 5. Support rod; 6. Diverter box; 7. Fixing frame; 8. Hollow slot; 9. Rectangular box; 10. Clamping block; 11. Front end cover; 12. Cylindrical frame; 13. Sealing ring; 14. Push rod; 15. First rubber plug; 16. Return spring; 17. Rear end cover; 18. Cavity; 19. Adaptor pipe; 20. Flexible conduit; 21. Slide groove; 22. 23. Slider; 24. Positioning seat; 25. L-shaped limit frame; 26. Drive plate; 27. Inclined groove; 28. Connecting rod; 29. ​​Cylindrical protrusion; 30. Circular plate; 31. Fixing box; 32. Rotating shaft; 33. Worm gear; 34. Worm; 35. Drive shaft; 36. Support frame; 37. Liquid storage tank; 38. Diverting conduit; 39. Cylindrical tube; 40. Top seat; 41. Pressure rod; 42. Locking rod; 43. Second rubber stopper. Detailed Implementation

[0040] 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figures 1-10 The present invention provides an apparatus for surface treatment of leather shoes, comprising a rotating worktable and a positioning worktable, wherein the positioning worktable is installed on the upper end of the rotating worktable;

[0042] The positioning workbench includes a positioning platform 4 and a liquid storage tank 36. Two positioning components are symmetrically arranged on the upper end of the positioning platform 4. The positioning components include a fixing frame 7 and a diversion box 6. The fixing frame 7 is provided with a slot 8. Multiple rectangular boxes 9 are slidably arranged in the slot 8. The front end of the rectangular box 9 is provided with a clamping block 10. The rear end of the clamping block 10 is provided with a push rod 14 that is inserted into the rectangular box 9. The rear end of the push rod 14 is provided with a first rubber plug 15 located inside the rectangular box 9. The outer wall of the first rubber plug 15 is tightly fitted with the inner wall of the rectangular box 9. The rectangular box 9 is provided with a return spring 16. One end of the return spring 16 is fixed to the rear end of the rectangular box 9, and the other end of the return spring 16 is connected to the first rubber plug 15.

[0043] A cylindrical tube 38 is fixedly installed at the upper end of the liquid storage tank 36. The cylindrical tube 38 is connected to the liquid storage tank 36. Both ends of the liquid storage tank 36 are provided with diversion conduits 37 that are connected to the diversion box 6. The inner side of the diversion box 6 is provided with multiple flexible conduits 20 that are connected to the rectangular box 9. The inside of the cylindrical tube 38 is provided with a second rubber stopper 42. The outer wall of the second rubber stopper 42 is tightly fitted with the inner wall of the cylindrical tube 38. The upper end of the second rubber stopper 42 is provided with a pressure rod 40 that penetrates the top seat 39. The upper end of the pressure rod 40 is provided with a pressure plate. A locking rod 41 is provided on one side of the top seat 39. The locking rod 41 penetrates the top seat 39 and one end abuts against the pressure rod 40. The locking rod 41 is threadedly connected to the top seat 39. The liquid storage tank 36, the diversion conduits 37, the diversion box 6, the flexible conduits 20, and the rectangular box 9 are all filled with filling liquid.

[0044] A method for treating the surface of leather shoes using an apparatus includes the following steps:

[0045] Step 1, device assembly: assemble the positioning table 4 on the upper end of the rotary table 2, fix the base 1 in the designated work position, and use the anti-slip pads between the rotary table 2 and the base 1 to form friction positioning so that the rotary table 2 remains stationary when it is not under force.

[0046] Step 2, shoe positioning: Place the shoes to be processed on the upper part of the positioning platform 4, so that the shoes are between the two fixing frames 7, and achieve initial fixation through the friction between the sole of the shoe and the surface of the positioning platform 4;

[0047] Step 3, Locking and Fixing: Press the pressure plate with one hand to move the pressure rod 40 down, causing the second rubber plug 42 to squeeze the filling liquid in the cylindrical tube 38. The filling liquid enters the rectangular box 9 through the storage tank 36, the diversion conduit 37, the diversion box 6, the soft conduit 20 and the adapter tube 19 in sequence. This pushes the first rubber plug 15 to stretch the return spring 16 and drive the push rod 14 and the clamping block 10 to move closer to the leather shoe until all the clamping blocks 10 are in contact with the outer wall of the shoe sole. After confirming that the clamping is firm by touch and the deformation of the shoe sole, release the hand that is holding it and turn the locking rod 41 clockwise to lock the pressure rod 40 and fix the position of the second rubber plug 42 and the clamping block 10.

[0048] Step 4, multi-angle treatment: Adjust the angle of the positioning platform 4 by rotating the handle of the rotating platform 2 to perform all-round spraying treatment on the surface of the leather shoes;

[0049] Step 5, Unlock and retrieve the item: After processing, turn the locking rod 41 counterclockwise to release the limit on the pressure rod 40. The reset spring 16 resets and drives the first rubber plug 15, the push rod 14 and the clamping block 10 to move away from the leather shoe. The second rubber plug 42 rises and resets under the reverse force of the filling liquid. Then, take out the processed leather shoe.

[0050] It also includes a size adaptation adjustment step: when there is a difference in the size of the leather shoes to be processed, the drive shaft 34 is rotated clockwise, and the circular plate 29 is rotated through the meshing transmission of the worm 33 and the worm wheel 32. The circular plate 29 pushes the two drive plates 25 to slide synchronously and in opposite directions along the rectangular limiting groove of the L-shaped limiting frame 24 to the outside of the positioning platform 4 through the connecting rod 27. The slider 22 slides along the inclined groove 26 on the drive plate 25 and drives the rectangular box 9 to move along the empty groove 8 and the sliding groove 21, increasing the distance between multiple rectangular boxes 9.

[0051] Alternatively, the drive shaft 34 can be rotated counterclockwise to move the rectangular box 9 in the opposite direction through the aforementioned transmission components, thereby reducing the distance between multiple rectangular boxes 9 to accommodate leather shoes of different sizes.

[0052] Work steps:

[0053] Device assembly and fixing:

[0054] The rotary worktable includes a base 1 and a rotary table 2. The upper end of the base 1 is provided with a groove 3. The rotary table 2 is inserted into the groove 3 and is rotatably connected to the base 1 through a bearing. An anti-slip pad is provided between the outer wall of the rotary table 2 and the inner wall of the base 1. The lower end of the positioning platform 4 is provided with a support rod 5. The support rod 5 is fixed to the upper end of the rotary table 2 by screws. Multiple positioning plates are provided on the periphery of the base 1, and multiple handles are provided on the periphery of the rotary table 2.

[0055] First, securely assemble the positioning table 4 and the rotating table 2, then install the base 1 at the designated working position.

[0056] The rotary table 2 is connected to the base 1 by bearings, and the anti-slip pads between them can form reliable friction positioning, ensuring that the rotary table 2 remains stationary when not subjected to external forces, providing a stable reference for subsequent processing.

[0057] Size adjustment:

[0058] The base 1 is provided with a drive assembly for moving the rectangular box 9. The drive assembly includes a transmission assembly and two drive plates 25.

[0059] Two drive plates 25 are symmetrically arranged on the lower end of the positioning platform 4. Multiple L-shaped limit frames 24 are provided on the symmetrical drive plates 25 at the lower end of the positioning platform 4. The inner side of the L-shaped limit frame 24 is provided with a rectangular limit groove. The two sides of the drive plates 25 are inserted into the rectangular limit groove and are slidably connected with the L-shaped limit frame 24. The lower end of the empty slot 8 is provided with a sliding groove 21 that penetrates the positioning platform 4. The lower end of the rectangular box 9 is provided with a slider 22 that penetrates the sliding groove 21. The slider 22 is slidably connected with the sliding groove 21. Multiple inclined grooves 26 with different inclinations are symmetrically arranged on the drive plates 25. The outer ends of the inclined grooves 26 approach each other, and the inner ends of the inclined grooves 26 gradually move away from each other. The bottom end of the slider 22 penetrates the inclined groove 26 and is slidably connected with the inclined groove 26. The transmission component drives the two drive plates 25 to move synchronously in opposite directions.

[0060] The transmission assembly includes a support frame 35, a drive shaft 34, a fixed box 30, and a circular plate 29. The fixed box 30 is fixed below the positioning platform 4, and the support frame 35 is fixed at the lower end of the positioning platform 4. A rotating shaft 31 is vertically installed at the center of the circular plate 29 and inserted into the fixed box 30. A worm gear 32 is fixed at the lower end of the rotating shaft 31. The front end of the drive shaft 34 passes through the support frame 35 and is rotatably connected to the support frame 35 through a bearing. The front end of the drive shaft 34 is provided with a toggle block. The rear end of the drive shaft 34 is inserted into the fixed box 30 and is rotatably connected to the fixed box 30 through a bearing. The rear end of the drive shaft 34 is provided with a worm 33 that cooperates with the worm gear 32. Two connecting rods 27 are symmetrically arranged at the lower edge of the circular plate 29. Cylindrical protrusions 28 are provided in the middle part of the drive plate 25 and at the edge of the circular plate 29. The two cylindrical protrusions 28 pass through both ends of the connecting rods 27 and are rotatably connected to both ends of the connecting rods 27 through bearings.

[0061] When there are size discrepancies in the shoes to be processed, the transmission mechanism is triggered by rotating the drive shaft 34.

[0062] The worm gear 33 meshes with the worm wheel 32 to drive the circular plate 29 to rotate. The circular plate 29 pushes the two drive plates 25 to slide synchronously in opposite directions along the rectangular limiting groove of the L-shaped limiting frame 24 to the outside or inside of the positioning platform 4 via the connecting rod 27.

[0063] When the drive plate 25 moves, the slider 22 slides along the inclined groove 26 on the drive plate 25, thereby driving the rectangular box 9 to move along the empty groove 8 and the sliding groove 21. Since the inclined grooves 26 are symmetrically arranged and have different inclinations, the distance between the multiple rectangular boxes 9 can be increased or decreased to accurately fit different sizes of leather shoes.

[0064] Preliminary positioning of leather shoes:

[0065] Place the leather shoes to be processed on the upper part of the positioning platform 4, so that the leather shoes are between the two fixed frames 7.

[0066] The shoes are initially secured by the friction between the sole and the surface of the positioning platform 4. If further stability is required, the shoes can be temporarily supported with one hand.

[0067] Flexible locking and fixing:

[0068] The liquid storage tank 36, the diversion box 6, and the fixing frame 7 are all fixed on the upper end of the positioning platform 4. The liquid storage tank 36 is located in front of the positioning platform 4. The fixing frame 7 and the diversion box 6 are symmetrically arranged on the left and right sides of the upper end of the positioning platform 4, and the fixing frame 7 is located inside the diversion box 6. The two ends of the fixing frame 7 are fixed with positioning seats 23 by screws. The positioning seats 23 are fixed to the upper end of the positioning platform 4 by screws. The two positioning seats 23 cover the two ends of the empty slot 8 at both ends of the diversion box 6. The upper and lower ends of the rectangular box body 9 are provided with guide grooves with rectangular cross sections. The top and bottom of the fixing frame 7 are through the guide grooves.

[0069] The rectangular box 9 has a front cover 11 at its front end and a cylindrical frame 12 inserted into the rectangular box 9 at its rear end. The cylindrical frame 12 is threadedly connected to the rectangular box 9. A sealing ring 13 is embedded in the front end of the front cover 11 and is penetrated by a push rod 14 (to ensure the sealing at the push rod 14). The rectangular box 9 has a cavity 18 at its rear end and a connecting pipe 19 at the rear of the rectangular box 9. The connecting pipe 19 has a rear cover 17 inserted into the cavity 18 at its front end and is threadedly connected to the cavity 18. The connecting pipe 19 communicates with the rectangular box 9. The end of the return spring 16 away from the first rubber plug 15 is fixed to the front end of the rear cover 17. The end of the flexible conduit 20 away from the diversion box 6 is connected to the rear end of the connecting pipe 19.

[0070] Pressing the pressure plate with one hand moves the pressure rod 40 downward, causing the second rubber stopper 42 to squeeze the filling liquid inside the cylindrical tube 38.

[0071] The filling liquid flows sequentially through the storage tank 36, the diversion conduit 37, the diversion box 6, the soft conduit 20 and the adapter 19 into the rectangular box 9, pushing the first rubber stopper 15 to stretch the return spring 16, and driving the push rod 14 and the clamping block 10 to move closer to the leather shoe.

[0072] Once all clamping blocks 10 are in contact with the outer wall of the shoe sole, and the clamping is confirmed to be secure by touch and observation of the shoe sole deformation, release the supporting hand, rotate the locking rod 41 clockwise to lock the pressure rod 40, so that the second rubber plug 42 and the clamping block 10 are fixed in position, thus completing the stable clamping of the leather shoe.

[0073] Multi-angle surface treatment: By rotating the handles on the sides of the rotating table 2, the angle of the positioning table 4 can be flexibly adjusted. The bearing connection between the rotating table 2 and the base 1 ensures smooth rotation, while the anti-slip pads can achieve positioning at any angle, facilitating all-round, no-dead-angle spraying and other treatment operations on the surface of leather shoes.

[0074] Unlocking and Removal: After the processing is completed, turn the locking lever 41 counterclockwise to release the limit on the pressure lever 40. The return spring 16 returns to its original position under its own elasticity, causing the first rubber plug 15, push rod 14 and clamping block 10 to move away from the leather shoe. At the same time, the second rubber plug 42 rises and returns to its original position under the reverse force of the filling liquid, and the clamping state is released. At this time, the processed leather shoe can be easily removed.

[0075] Traditional structures may be replaced by several sets of hydraulic cylinders, pneumatic cylinders, or electric lead screws with a chuck equipped with a pressure sensor. However, the alternative requires additional configuration of multiple drive sources, pressure sensors, electrical control coordination modules, and wiring, making the overall system structure cumbersome. Furthermore, in the spraying process, there are media such as paint and solvents, and electrical components (sensors and control modules) are susceptible to corrosion and contamination, which not only further increases the failure rate but may also cause clamping failure or malfunction due to electrical faults, affecting the continuity of processing operations.

[0076] All connections of the device are sealed to ensure the tightness of the filling fluid, preventing leakage from affecting the performance. The cooperation between the return spring 16 and the transmission components ensures consistent and reliable operation after multiple uses. The assembly of each component is simple, facilitating daily inspection and maintenance. Furthermore, the wear-resistant and anti-slip design of the core components further extends the overall service life of the device and reduces operating costs.

[0077] In the structural design of this device, the length of the push rod 14 does not need to be strictly limited and can be flexibly adapted according to actual assembly requirements. During the shoe upper repair operation, the effective spraying range of the spray gun is limited. Even if a small amount of paint is accidentally contaminated on the front end of the push rod 14, since the contaminated part is always outside the rectangular box 9, it will not enter the interior of the rectangular box 9 and come into contact with the internal components. Therefore, it will not affect the subsequent stable sliding, power transmission and clamping action accuracy of the push rod 14, ensuring the long-term reliability of the push rod 14.

[0078] Load-bearing and support components:

[0079] Base 1, rotating platform 2, positioning platform 4: made of gray cast iron (HT200) or Q235 steel plate;

[0080] Gray cast iron is rigid and has good shock absorption, which can stably support the weight of the entire device; Q235 steel plate has high strength and is easy to process with flatness, and can be flexibly selected according to the specifications of the device to ensure structural stability during operation.

[0081] 7. Fixing frame, 9. Rectangular box, 30. Fixing box, 35. Support frame: 304 stainless steel or aluminum alloy (6061).

[0082] 304 stainless steel is corrosion-resistant and rust-resistant, making it suitable for spray coating environments; aluminum alloy is lightweight yet strong enough to reduce the overall weight of the device, facilitating handling and installation.

[0083] Support rod 5, positioning seat 23, L-shaped limit bracket 24: made of No. 45 steel and galvanized;

[0084] 45 steel has high mechanical strength, and galvanizing can improve its rust resistance, ensure the reliability of support and limit, and extend its service life.

[0085] Transmission parts:

[0086] Drive shaft 34, rotating shaft 31, worm gear 33, connecting rod 27, cylindrical protrusion 28: made of 40Cr alloy structural steel;

[0087] This material has good hardenability, high strength, and excellent wear resistance. After heat treatment, it can meet the torque transmission requirements in the transmission process and avoid deformation or wear.

[0088] Worm gear 32: made of tin bronze (ZCuSn10Pb1);

[0089] Tin bronze has good wear resistance and a low coefficient of friction. When used in conjunction with a steel worm gear 33, it can reduce meshing wear and ensure transmission accuracy and smoothness.

[0090] Drive plate 25, circular plate 29, slider 22: Q235 steel plate or engineering plastic (PA66 + glass fiber);

[0091] Steel plates are high-strength and suitable for heavy-duty applications; engineering plastics are lightweight, wear-resistant, and have good self-lubricating properties, which can reduce sliding friction resistance and improve adjustment flexibility.

[0092] Sealing and elastic components:

[0093] First rubber stopper 15, second rubber stopper 42, sealing ring 13: fluororubber (FKM) or silicone rubber are selected;

[0094] Fluororubber is resistant to high temperatures and corrosion, making it suitable for chemical media in spraying environments; silicone rubber is flexible, has strong sealing properties, and does not cause swelling of the filler liquid, ensuring reliable sealing.

[0095] Return spring 16: Made of 65Mn spring steel;

[0096] 65Mn spring steel has a high elastic limit and good recovery, and can withstand multiple stretching and reset cycles. It is not prone to fatigue failure, ensuring smooth clamping and unlocking.

[0097] Conduits and connecting parts:

[0098] Flexible tubing 20, shunt tubing 37, adapter tubing 19: Use weather-resistant rubber tubing or PU flexible tubing;

[0099] Rubber hoses are flexible and resistant to bending, while PU hoses are lightweight and corrosion-resistant. Both can meet the needs of conveying filling fluids and facilitate the connection and layout of various components of the device.

[0100] Cylindrical frame 12, front end cover 11, rear end cover 17: made of 304 stainless steel or ABS engineering plastic;

[0101] Stainless steel is corrosion-resistant and has good sealing properties, while engineering plastics are easy to process and have a moderate cost, allowing for selection based on sealing requirements and usage scenarios.

[0102] Clamping and manipulating parts:

[0103] Clamping block 10: The rigid substrate is covered with polyurethane rubber (PU) or nitrile rubber (NBR);

[0104] The rubber material is soft and elastic, which can conform to the contour of the shoe sole when clamping, avoiding scratches or damage to the leather shoes, while also having a certain amount of friction to improve clamping stability.

[0105] Pressure bar 40, locking bar 41, handle: made of 45# steel or aluminum alloy and surface anodized / painted;

[0106] 45 steel is high in strength, aluminum alloy is lightweight and easy to handle, and surface treatment can improve the feel and rust resistance, making it convenient for workers to operate frequently.

[0107] In the description herein, it should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0108] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A device for surface treatment of leather shoes, comprising a rotating worktable and a positioning worktable, characterized in that: The positioning worktable is installed on the upper end of the rotary worktable; The positioning worktable includes a positioning platform and a liquid storage tank. Two positioning components are symmetrically arranged on the upper end of the positioning platform. The positioning components include a fixing frame and a diversion box. The fixing frame has a slot, and multiple rectangular boxes are slidably arranged in the slot. The front end of the rectangular box is provided with a clamping block, and the rear end of the clamping block is provided with a push rod that is inserted into the interior of the rectangular box. The rear end of the push rod is provided with a first rubber plug located inside the rectangular box. The outer wall of the first rubber plug is tightly fitted with the inner wall of the rectangular box. The interior of the rectangular box is provided with a return spring. One end of the return spring is fixed to the rear end of the rectangular box, and the other end of the return spring is connected to the first rubber plug. A cylindrical tube is fixedly installed at the upper end of the liquid storage tank, and the cylindrical tube is connected to the liquid storage tank. Both ends of the liquid storage tank are provided with diversion conduits that are connected to the diversion box. The inner side of the diversion box is provided with multiple flexible conduits that are connected to the rectangular box body. The inside of the cylindrical tube is provided with a second rubber stopper. The outer wall of the second rubber stopper is tightly fitted to the inner wall of the cylindrical tube. The upper end of the second rubber stopper is provided with a pressure rod that penetrates the top seat. The upper end of the pressure rod is provided with a pressure plate. A locking rod is provided on one side of the top seat. The locking rod penetrates the top seat and one end abuts against the pressure rod. The locking rod is threadedly connected to the top seat. The liquid storage tank, diversion conduits, diversion box, flexible conduits, and rectangular box body are all filled with filling liquid.

2. The apparatus for surface treatment of leather shoes according to claim 1, characterized in that: The rotary worktable includes a base and a rotary table. The upper end of the base is provided with a groove, and the rotary table is inserted into the groove and rotatably connected to the base through a bearing. An anti-slip pad is provided between the outer wall of the rotary table and the inner wall of the base. The lower end of the positioning table is provided with a support rod, which is fixed to the upper end of the rotary table by screws. Multiple positioning plates are provided on the periphery of the base, and multiple handles are provided on the periphery of the rotary table.

3. The apparatus for surface treatment of leather shoes according to claim 2, characterized in that: The liquid storage tank, the diversion box, and the fixing frame are all fixed on the upper part of the positioning platform. The liquid storage tank is located in front of the positioning platform. The fixing frame and the diversion box are symmetrically arranged on the upper part of the positioning platform, and the fixing frame is located inside the diversion box. The two ends of the fixing frame are fixed with positioning seats by screws. The positioning seats are fixed to the upper part of the positioning platform by screws. The two positioning seats at the two ends of the diversion box cover the two ends of the empty slot. The upper and lower ends of the rectangular box are provided with guide grooves with rectangular cross sections. The top and bottom of the fixing frame pass through the guide grooves.

4. The apparatus for surface treatment of leather shoes according to claim 3, characterized in that: The rectangular box has a front cover at the front end, and a cylindrical frame inserted into the rectangular box at the rear end of the front cover. The cylindrical frame is threadedly connected to the rectangular box. A sealing ring is embedded in the front end of the front cover and is penetrated by a push rod. The rectangular box has a cavity at the rear end, and a connecting pipe is located at the rear of the rectangular box. The front end of the connecting pipe has a rear cover inserted into the cavity. The rear cover is threadedly connected to the cavity. The connecting pipe communicates with the rectangular box. The end of the return spring away from the first rubber plug is fixed to the front end of the rear cover. The end of the flexible conduit away from the diverter box is connected to the rear end of the connecting pipe.

5. The apparatus for surface treatment of leather shoes according to claim 4, characterized in that: The base is provided with a drive assembly for moving a rectangular box, which includes a transmission assembly and two drive plates. Two drive plates are symmetrically arranged on the lower end of the positioning platform. Multiple L-shaped limit frames are set at the lower end of the positioning platform, with each L-shaped limit frame located on both sides of the drive plate. A rectangular limit groove is provided on the inner side of the L-shaped limit frame. The two sides of the drive plate are inserted into the rectangular limit groove and slidably connected with the L-shaped limit frame. A sliding groove penetrating the positioning platform is provided at the lower end of the empty groove. A slider penetrating the sliding groove is provided at the lower end of the rectangular box. The slider is slidably connected with the sliding groove. Multiple inclined grooves with different inclinations are symmetrically arranged on the drive plate. The outer ends of the inclined grooves approach each other, and the inner ends of the inclined grooves gradually move away from each other. The bottom end of the slider penetrates the inclined groove and is slidably connected with the inclined groove. The transmission component drives the two drive plates to move synchronously in opposite directions.

6. The apparatus for surface treatment of leather shoes according to claim 5, characterized in that: The transmission assembly includes a support frame, a drive shaft, a fixed box, and a circular plate. The fixed box is fixed below the positioning platform, and the support frame is fixed at the lower end of the positioning platform. A rotating shaft inserted into the fixed box is vertically arranged at the center of the circular plate. A worm gear is fixed at the lower end of the rotating shaft. The front end of the drive shaft passes through the support frame and is rotatably connected to the support frame via a bearing. A toggle block is provided at the front end of the drive shaft. The rear end of the drive shaft is inserted into the fixed box and is rotatably connected to the fixed box via a bearing. A worm gear that cooperates with the worm gear is provided at the rear end of the drive shaft. Two connecting rods are symmetrically arranged at the lower edge of the circular plate. Cylindrical protrusions are provided in the middle part of the drive plate and at the edge of the circular plate. The two cylindrical protrusions pass through both ends of the connecting rods and are rotatably connected to both ends of the connecting rods via bearings.

7. A method for treating the surface of leather shoes using an apparatus, for implementing the apparatus for treating the surface of leather shoes as described in claim 6, characterized in that: Includes the following steps: Step 1, device assembly: Assemble the positioning table on the upper part of the rotary table, fix the base in the designated work position, and use the anti-slip pads between the rotary table and the base to form friction positioning so that the rotary table remains stationary when no force is applied. Step 2, shoe positioning: Place the shoes to be processed on the upper part of the positioning platform, so that the shoes are between the two fixed frames, and the friction between the soles of the shoes and the surface of the positioning platform is used to achieve initial fixation; Step 3, Locking and Fixing: Press the pressure plate with one hand to move the pressure rod down, causing the second rubber stopper to squeeze the filling liquid in the cylindrical tube. The filling liquid enters the rectangular box in sequence through the storage tank, the diversion conduit, the diversion box, the soft conduit, and the adapter pipe. This pushes the first rubber stopper to stretch the return spring and moves the push rod and clamping block closer to the shoe until all the clamping blocks are in contact with the outer wall of the shoe sole. After confirming that the clamping is firm by touch and the deformation of the shoe sole, release the hand supporting the shoe and turn the locking rod clockwise to lock the pressure rod and fix the position of the second rubber stopper and the clamping block. Step 4, Multi-angle treatment: Adjust the angle of the positioning platform by rotating the handle of the rotating platform to perform all-round spraying treatment on the surface of the leather shoes; Step 5, Unlock and retrieve the item: After processing, turn the locking lever counterclockwise to release the limit on the pressure rod. The reset spring resets and moves the first rubber plug, push rod, and clamping block away from the leather shoe. The second rubber plug rises and resets under the reverse force of the filling liquid. Then, take out the processed leather shoe.

8. The processing method of the apparatus for treating the surface of leather shoes according to claim 7, characterized in that: It also includes a size adaptation adjustment step: when there is a difference in the size of the leather shoes to be processed, the drive shaft is rotated clockwise, and the circular plate is driven to rotate through the meshing transmission of the worm and worm wheel. The circular plate pushes the two drive plates to slide synchronously and in opposite directions along the rectangular limit groove of the L-shaped limit frame to the outside of the positioning platform through the connecting rod. The slider slides along the inclined groove on the drive plate and drives the rectangular box to move along the empty groove and the sliding groove, increasing the distance between multiple rectangular boxes. Alternatively, the drive shaft can be rotated counterclockwise, which in turn drives the rectangular housing to move in the opposite direction through the aforementioned transmission components, reducing the distance between multiple rectangular housings to accommodate different sizes of leather shoes.

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