A device for forming a cushioning child shoe

Abstract

The utility model relates to children's shoes processing equipment technical field, concretely is a kind of shock-absorbing children's shoes forming device, the lower end of processing table is fixedly arranged locating seat, locating seat is equipped with the installation groove that passes through processing table, installation groove is equipped with bottom die, the lower end of bottom die is fixedly arranged bottom plate, the both sides of bottom plate are equipped with multiple limit slots, the both sides of processing table are symmetrically arranged two limit components, and limit component includes locating rack and pull block, locating rack is fixed in the both sides of processing table, locating rack is equipped with locating slot, pull block is inserted into locating slot inside, the device is with limit component (locating rack, pull block etc.) and elastic lifting structure (support plate, vertical pole etc.) to realize the quick replacement of bottom die, by pulling handle, i.

Description

Technical Field

[0001] This utility model relates to the technical field of children's shoe processing equipment, specifically to a device for molding shock-absorbing children's shoes. Background Technology

[0002] In the children's shoe manufacturing industry, cushioned children's shoes have become one of the mainstream products in the market because they are suitable for children's active daily activities, effectively reducing the impact of foot landing and protecting children's foot development. The core performance of cushioned children's shoes depends on the molding quality of the sole. The sole is usually composed of multiple components such as a cushioning midsole, support layer, and shoe inserts. Specific processes are needed to achieve a tight bond between these components. As the core equipment for molding cushioned children's shoes, the sole pressing machine uses preset pressure to make the sole more firmly pressed together.

[0003] Existing shoe sole pressing machines still have significant technical shortcomings in practical applications for molding cushioned children's shoes, especially in terms of adaptability during mold replacement. Since cushioned children's shoes require different sole specifications based on children's age, shoe size, and style, the corresponding molds also need to be replaced accordingly. However, existing pressing machines generally lack a quick mold replacement and adaptation mechanism. Molds are often rigidly connected to the pressing machine's worktable via multiple sets of bolts. When replacing them, tools are needed to disassemble the bolts one by one, making the operation cumbersome, extending the mold replacement cycle, and thus reducing the production efficiency of cushioned children's shoes. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a device for molding shock-absorbing children's shoes.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a device for molding shock-absorbing children's shoes, including a processing table, a top plate fixedly installed above the processing table, a control box fixedly installed at the upper end of the processing table, a positioning seat fixedly installed at the lower end of the processing table, an installation groove penetrating the processing table provided in the positioning seat, a bottom mold provided in the installation groove, a bottom plate fixedly installed at the lower end of the bottom mold, multiple limiting grooves provided on both sides of the bottom plate, two limiting components symmetrically arranged on both sides of the processing table, the limiting components including a positioning frame and a pull block, the positioning frame fixed on both sides of the processing table, the positioning frame having a positioning groove provided in the positioning frame, the pull block being inserted into the positioning groove, and multiple limiting rods penetrating the positioning seat and inserted into the limiting groove on one side of the pull block; A cylinder is fixedly installed at the lower end of the top plate, and a pressure plate is provided at the output end of the cylinder above the mounting groove.

[0006] To make the pull block more securely installed, the present invention is improved by symmetrically arranging multiple slots on the inner wall of the positioning groove, providing cavities on both sides of the pull block, and providing a first spring inside the cavity. One end of the first spring is fixed inside the cavity, and the other end is provided with a locking block that cooperates with the slot. The locking block is an isosceles trapezoidal structure.

[0007] To make the pull block easier to grip, the present invention includes an improvement where a handle is provided on the outer side of the pull block.

[0008] To make the bottom mold easier to handle, the present invention includes an improvement where gripping grooves are provided on the other two sides of the bottom mold.

[0009] To make the bottom mold more securely installed, the improvement of this utility model is that the bottom mold fits tightly against the inner wall of the mounting groove, positioning holes are provided at the four corners of the lower end of the positioning seat, and limiting blocks that are inserted into the positioning holes are provided at the four corners of the upper end of the base plate, and there is friction between the limiting blocks and the positioning holes.

[0010] To facilitate assembly of the bottom mold, the present invention includes the following improvements: a support plate is provided below the processing table, a protrusion is fixedly provided at the upper end of the support plate, and a groove is provided at the lower end of the bottom mold to cooperate with the protrusion. The protrusion fits tightly against the inner wall of the groove. Multiple positioning tubes are fixedly provided at the lower end of the processing table. The positioning tubes have hollow grooves inside, and a second spring is provided inside the hollow grooves. The top end of the second spring is fixed to the top of the hollow groove, and a vertical rod is provided at the bottom end of the second spring. Multiple side blocks are provided on both sides of the support plate, and the side blocks are fixed to the lower end of the vertical rod by screws.

[0011] (III) Beneficial Effects Compared with the prior art, this utility model provides a device for molding shock-absorbing children's shoes, which has the following beneficial effects: This device enables rapid replacement of the bottom mold using limiting components (positioning frame, pull block, etc.) and elastic support structure (support plate, vertical bar, etc.). The limiting is unlocked by pulling the handle, and the protrusion and groove position the bottom mold in seconds. No bolts or tools are required, which greatly shortens the mold change cycle. It is suitable for the production of various styles of shock-absorbing children's shoes and solves the problem of large-scale efficiency.

[0012] The bottom mold fits snugly into the mounting groove, the limiting block matches the positioning hole, and the limiting rod matches the limiting groove, ensuring the stability of the bottom mold during use, effectively reducing the defect rate, and meeting the molding precision requirements of shock-absorbing children's shoes. Attached Figure Description

[0013] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention; Figure 2 This is a second-view perspective three-dimensional structural diagram of the present invention; Figure 3 This utility model Figure 1 The main view; Figure 4 This is a schematic diagram of the mating structure of the card block and the card slot in this utility model; In the diagram: 1. Processing table; 2. Top plate; 3. Positioning seat; 4. Mounting groove; 5. Bottom mold; 6. Base plate; 7. Limiting block; 8. Positioning hole; 9. Support plate; 10. Protrusion; 11. Groove; 12. Positioning tube; 13. Vertical rod; 14. Side block; 15. Cylinder; 16. Pressure plate; 17. Control box; 18. Positioning frame; 19. Pull block; 20. Limiting rod; 21. Limiting groove; 22. Slot; 23. Cavity. Detailed Implementation

[0014] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figures 1-4 This utility model discloses a device for molding shock-absorbing children's shoes, including a processing table 1, a top plate 2 fixedly installed above the processing table 1, a control box 17 fixedly installed at the upper end of the processing table 1, a positioning seat 3 fixedly installed at the lower end of the processing table 1, an installation groove 4 penetrating the processing table 1 in the positioning seat 3, a bottom mold 5 in the installation groove 4, a bottom plate 6 fixedly installed at the lower end of the bottom mold 5, multiple limiting grooves 21 on both sides of the bottom plate 6, and two limiting components symmetrically arranged on both sides of the processing table 1. The limiting components include a positioning frame 18 and a pull block 19. The positioning frame 18 is fixed on both sides of the processing table 1, and a positioning groove is provided in the positioning frame 18. The pull block 19 is inserted into the positioning groove. Multiple limiting rods 20 penetrating the positioning seat 3 and inserted into the limiting groove 21 are provided on one side of the pull block 19. A cylinder 15 is fixedly installed at the lower end of the top plate 2, and a pressure plate 16 is provided at the output end of the cylinder 15 above the mounting groove 4.

[0016] (a) Equipment pre-installation and commissioning: Basic component assembly: With the processing table 1 as the core support, a top plate 2 is fixedly installed on top of it, and a positioning seat 3 and multiple positioning tubes 12 are respectively set at the lower end. A slot is opened inside the positioning tube 12, and a second spring is placed in the slot. The top of the second spring is fixed to the top of the slot, and the bottom is connected to the vertical rod 13. The side blocks 14 on both sides of the support plate 9 are fixed to the lower end of the vertical rod 13 by screws, forming a lifting structure that can be elastically raised and lowered.

[0017] The bottom plate 6 is fixed at the lower end of the bottom mold 5. The limiting blocks 7 at the four corners of the bottom plate 6 are aligned with the positioning holes 8 at the lower end of the positioning seat 3 and inserted. At the same time, the bottom mold 5 is embedded in the mounting groove 4 of the processing table 1 through the positioning seat 3 to ensure that the bottom mold 5 fits tightly with the inner wall of the mounting groove 4, thus completing the initial bearing positioning of the bottom mold 5.

[0018] Precise positioning of bottom mold 5: The protrusion 10 at the upper end of the tray 9 is aligned with the groove 11 at the lower end of the bottom mold 5 and inserted. Through the tight fit between the protrusion 10 and the groove 11, the bottom mold 5 is pre-positioned on the tray 9, thus preventing the bottom mold 5 from shifting laterally.

[0019] Limit component installation: The pull block 19 has a handle on its outer side.

[0020] The positioning frame 18 is fixed on both sides of the processing table 1. The pull block 19 with handle is inserted into the positioning groove inside the positioning frame 18. The limiting rod 20 on one side of the pull block 19 passes through the positioning seat 3 and finally inserts into the limiting groove 21 on both sides of the base plate 6. Multiple slots 22 are symmetrically arranged on the inner wall of the positioning groove. Cavities 23 are provided on both sides of the pull block 19. A first spring is provided inside the cavity 23. One end of the first spring is fixed inside the cavity 23, and the other end is provided with a block that cooperates with the slot 22. The block is an isosceles trapezoidal structure.

[0021] At this time, the first spring in the cavity 23 on both sides of the pull block 19 releases its elastic force, pushing the card block into the card slot 22 on the inner wall of the positioning groove (the card block is an isosceles trapezoidal structure, which facilitates smooth engagement and disengagement). The pull block 19 is firmly locked, and the longitudinal and lateral displacement of the bottom mold 5 in the installation groove 4 is restricted, thus completing the overall debugging of the equipment.

[0022] Electrical control system inspection: Confirm that the electrical connection between the control box 17 at the top of the processing table 1 and the cylinder 15 at the bottom of the top plate 2 is normal, and ensure that the pressure plate 16 at the output end of the cylinder 15 is precisely aligned with the top of the mounting slot 4, in preparation for the subsequent pressing action.

[0023] (II) Sole pressing and molding process: The semi-finished children's shoes with shoe buckles are placed in the mold groove of the bottom mold 5. The control box 17 sends a command to start the cylinder 15: the cylinder 15 drives the pressure plate 16 to move downward. The pressure plate 16 directly applies pressure to the shoe buckle. Under the pressure, the shoe buckle works with the bottom mold 5 to form uniform pressure on each component of the sole (shock-absorbing midsole, support layer, etc.), which promotes the tight bonding of each layer of material. After the pressing is completed, the control box 17 controls the cylinder 15 to reset, and the pressure plate 16 moves upward with the output end of the cylinder 15, detaching from the finished shoe sole, thus completing a single pressing process.

[0024] Bottom mold 5 replacement process (disassembly and assembly): The processing table 1 is provided with a support plate 9 below it. A protrusion 10 is fixedly provided at the upper end of the support plate 9. The bottom mold 5 is provided with a groove 11 that mates with the protrusion 10 at the lower end. The protrusion 10 fits tightly against the inner wall of the groove 11. Multiple positioning tubes 12 are fixedly provided at the lower end of the processing table 1. The positioning tubes 12 are provided with a hollow groove inside. A second spring is provided inside the hollow groove. The top end of the second spring is fixed to the top of the hollow groove. A vertical rod 13 is provided at the bottom end of the second spring. Multiple side blocks 14 are provided on both sides of the support plate 9. The side blocks 14 are fixed to the lower end of the vertical rod 13 by screws.

[0025] 1. Disassembly of the old bottom mold 5: Hold the handle on the outside of the pull block 19 and pull the pull block 19 outward: when the pulling force is greater than the elastic force of the first spring, the block disengages from the slot 22, and the limiting rod 20 moves outward synchronously with the pull block 19, and finally is pulled out from the limiting slot 21 and the positioning seat 3 of the base plate 6, releasing the limiting lock of the bottom mold 5.

[0026] An upward force is applied to lift the support plate 9, and the vertical rod 13 further compresses the second spring in the slot of the positioning tube 12, causing the support plate 9 to gradually adhere to the bottom plate 6. The bottom mold 5 has gripping grooves on its other two sides.

[0027] At this time, a downward force is applied above the bottom mold 5. When the force is greater than the friction between the four corner limit blocks 7 of the bottom plate 6 and the positioning holes 8 of the positioning seat 3, the bottom mold 5 can be smoothly pulled out from the mounting groove 4. The support plate 9 slowly descends with the elastic reset of the second spring, and the bottom mold 5 moves down synchronously with the support plate 9. The operator can easily remove the old bottom mold 5 through the gripping grooves on both sides of the bottom mold 5.

[0028] New bottom mold 5 assembly: The new bottom mold 5 (with the bottom plate 6 and the limiting block 7 pre-installed) is placed on the support plate 9 through the gripping groove. The protrusion 10 at the upper end of the support plate 9 is precisely aligned with the groove 11 at the lower end of the bottom mold 5 to achieve rapid pre-positioning of the new bottom mold 5.

[0029] The bottom mold 5 fits tightly against the inner wall of the mounting groove 4. The four corners of the lower end of the positioning seat 3 are provided with positioning holes 8. The four corners of the upper end of the bottom plate 6 are provided with limiting blocks 7 that are inserted into the positioning holes 8. There is friction between the limiting blocks 7 and the positioning holes 8.

[0030] Push the support plate 9 upwards, the vertical rod 13 compresses the second spring, the bottom mold 5 rises with the support plate 9 and inserts into the mounting groove 4, the limiting blocks 7 at the four corners of the bottom plate 6 are simultaneously inserted into the positioning holes 8 of the positioning seat 3; push the pull block 19 to move inwards towards the positioning frame 18, the limiting rod 20 passes through the positioning seat 3 and inserts into the limiting groove 21 of the bottom plate 6, the first spring pushes the locking block to re-engage in the locking groove 22, the pull block 19 is locked, the new bottom mold 5 is firmly fixed in the mounting groove 4, and the replacement process is completed.

[0031] Cylinder 15: Model: SC series standard cylinder; Reasons for selection: The sole pressing of shock-absorbing children's shoes does not require excessive pressure. The thrust of cylinder 15 (approximately 980-1590N at 0.5MPa air pressure) can meet the requirements for tight bonding of shoe materials; it is equipped with a magnetic switch for easy control of the detection stroke of the chassis 17, realizing automatic start and stop.

[0032] Control box 17: Core components: Siemens S7-200 SMART PLC (model CPUSR20) + 7-inch industrial touch screen; Reasons for selection: The PLC programming is flexible and can accurately control the lifting speed and holding time of cylinder 15; the touch screen operation is intuitive, making it easy for workers to set pressing parameters for different shoe styles and adapt to multi-specification production; the chassis shell is made of cold-rolled steel plate with powder coating, with a dustproof and waterproof rating of IP54, suitable for workshop environments.

[0033] Pull Block 19: Material: 45# steel with heat treatment (hardness HRC28-32) + PVC-coated handle on the outside; Reasons for selection: 45# steel has good toughness after quenching and tempering, and is not easy to break after repeated pulling; PVC-coated handle is non-slip and comfortable to hold, reducing operator hand fatigue; the two sides are machined with cavities 23 for installing the first spring and the locking block, which is easy to process.

[0034] Limit rod 20: Material: 304 stainless steel; Reasons for selection: Good rust prevention performance, avoiding rust and jamming caused by long-term insertion of positioning seat 3 and limiting groove 21; high surface smoothness (Ra≤0.8μm), low resistance when pulling, and easy to unlock / lock quickly.

[0035] Card Block: Material: 45# steel, quenched (hardness HRC45-50); Reason for selection: The isosceles trapezoidal structure needs to be wear-resistant and not easily deformed. The hardness after quenching meets the requirements. When it is matched with the slot 22, it can be firmly locked and can be smoothly released under tension to avoid jamming.

[0036] First spring / Second spring: Type: Helical compression spring (material: 65Mn steel); Reasons for selection: 65Mn steel has a stable elastic modulus and strong fatigue resistance. The first spring force is small and suitable for locking the clip, while the second spring force is large and supports the weight of the support plate 9 and the bottom mold 5. It is not easy to fail after long-term use.

[0037] Pallet 9: Material: 6061-T6 aluminum alloy sheet; Reasons for selection: Lightweight, easy to push upward manually; high precision when processing the protrusions 10 on the surface, which can accurately match the grooves 11 of the bottom mold 5; corrosion resistant, avoiding rust caused by residual glue in the shoe material when in contact with the bottom mold 5.

[0038] Positioning tube 12: Material: 20# seamless steel pipe; Reasons for selection: The inner wall is smooth (Ra≤1.6μm), ensuring smooth sliding of the vertical rod 13; it has high strength and can withstand the radial force when the second spring is compressed, and it is not easily deformed after long-term use.

[0039] Vertical rod 13: Material: 304 stainless steel; Reasons for selection: Rust-proof and with good straightness (≤0.1mm / m), it slides smoothly in the positioning tube 12 without jamming; the top is firmly welded to the second spring, and the bottom is connected to the side block 14 by screws, making it easy to disassemble and assemble.

[0040] Limit block 7: Material: 45# steel Reasons for selection: moderate hardness (unquenched, HRC15-20), it can be fixed by friction when inserted into positioning hole 8, and avoids scratching the inner wall of positioning hole 8; simple to process and can be mass-produced.

[0041] Bump 10: Material: 45# steel; Reasons for selection: It has strong stability after welding with the support plate 9, and the surface is polished, resulting in low resistance when inserted into the groove 11 of the bottom mold 5; it has high hardness, is not easy to wear during long-term positioning, and ensures the assembly accuracy of the bottom mold 5.

[0042] 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.

[0043] Although embodiments of the present 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 present invention.

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