Abrasion-resistant material pulling stud for shoe production mold

Abstract

This utility model discloses an anti-wear pull pin for shoe production molds, relating to the field of mold pull pins. The utility model includes a pull pin comprising a pin shank, with an anti-wear mechanism slidably connected to the outer front end of the pin shank. By providing the anti-wear mechanism, a sleeve is slidably connected to the pin shank, and the sleeve can slidably cover the easily worn area of ​​the pin shank. In the actual use of shoe production molds, due to the characteristics of TPU material itself and the mechanical stress experienced by the mold during repeated opening and closing, injection molding, etc., the pin shank of the pull pin is prone to friction with other parts of the mold, leading to wear. The sleeve, by sliding, reduces direct contact and friction between the pin shank and other parts, thus effectively solving the technical problem of pull pin wear caused by the characteristics of TPU material and the mechanical stress of repeated mold use, and extending the service life of the pull pin.

Description

Technical Field

[0001] This utility model relates to the field of material pulling nails, specifically an anti-abrasion material pulling nail for shoe production molds. Background Technology

[0002] In the footwear manufacturing industry, thermoplastic polyurethane elastomer (TPU) is widely used in shoe manufacturing due to its excellent elasticity, abrasion resistance, oil resistance, and transparency, such as in the production of soles and upper trim pieces. During the TPU molding process, the TPU sprue mold plays a crucial role, and its performance and quality directly affect the production efficiency and quality of shoe components.

[0003] However, due to the inherent properties of TPU material and the mechanical stress of the mold during repeated use, the pull pin gradually wears down during continuous pulling operations. As the wear intensifies, the fit between the pull pin and other parts of the mold decreases, leading to gaps in the mold. These gaps have serious consequences. During injection molding, the sprue is prone to developing burrs. The presence of burrs not only affects the appearance quality of the product, making the surface rough and unclean, but also increases the subsequent processing steps and costs. More seriously, the burrs also make it difficult to demold the sprue, and problems such as sprue breakage and residue are likely to occur during demolding. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide an anti-wear pull pin for shoe production molds, so as to solve the technical problems caused by wear of pull pins due to the characteristics of TPU material and mechanical stress during repeated use of the mold, which in turn causes gaps in the mold, resulting in burrs on the material head during injection molding, affecting the appearance quality of the product, increasing subsequent processing steps and costs, and causing difficulties in demolding the material head, easy breakage and residue of the material head.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-abrasion pull pin for a shoe production mold, comprising a pull pin, wherein the pull pin includes a pin rod, and an anti-abrasion mechanism is slidably connected to the outer front end of the pin rod;

[0006] The anti-wear mechanism includes a sleeve, which is slidably connected to the nail rod. A spring is installed at the bottom of the sleeve via a base, and a mounting ring is provided at the bottom of the spring. The mounting ring is fixedly connected to the nail rod.

[0007] By adopting the above technical solution, the sleeve and the nail bar are slidably connected, which can effectively reduce the direct wear of the nail bar, extend the service life of the pull nail, and improve the stability and reliability of the mold in shoe production.

[0008] Furthermore, one end of the nail rod is provided with a nail head, and the other end of the nail rod is provided with a limiting seat.

[0009] By adopting the above technical solution, the nail rod is equipped with a nail head and a limiting seat. The nail head facilitates cooperation with the mold components, and the limiting seat can restrict the movement range of the components, ensuring that the pulling nail works normally in the mold and improving production efficiency.

[0010] Furthermore, the sleeve is fitted onto the front end of the nail rod and is used to slide during mold operation to reduce direct wear on the nail rod.

[0011] By adopting the above technical solution, the sleeve is set at the front end of the nail bar, which slides during mold operation to reduce direct wear on the nail bar, reduce mold failure rate, ensure the continuity of shoe production, and improve product quality.

[0012] Furthermore, the spring provides an elastic connection between the base and the mounting ring so that the sleeve can be reset relative to the pin rod.

[0013] By adopting the above technical solution, the spring provides an elastic connection between the base and the mounting ring, allowing the sleeve to return to its original position relative to the pin rod, ensuring the normal operation of the anti-wear mechanism and maintaining the mold accuracy.

[0014] Furthermore, the fixed connection point between the mounting ring and the nail rod forms the support end of the spring, which is used to stabilize the movement of the anti-wear mechanism.

[0015] By adopting the above technical solution, the mounting ring and the nail rod are fixedly connected to form a spring support end, which stabilizes the movement of the anti-abrasion mechanism, reduces mold vibration, and improves the stability of shoe production.

[0016] Furthermore, the base and the ejector sleeve are fixedly connected to integrate the movement of the ejector sleeve and the spring.

[0017] By adopting the above technical solution, the base is fixedly connected to the ejector sleeve, integrating the movement of the ejector sleeve and the spring, making the anti-wear mechanism move in a coordinated manner, improving the mold response speed, and ensuring production efficiency.

[0018] Furthermore, the sliding connection of the sleeve allows for maintaining accuracy during the opening and closing of the nail bar, thereby reducing burrs on the material head.

[0019] By adopting the above technical solution, the sleeve sliding connection allows the nail bar to maintain accuracy when opening and closing, reduces burrs on the material ends, improves the appearance quality of shoe parts, and reduces subsequent processing costs.

[0020] Furthermore, the anti-wear mechanism slidably covers the wear-prone area of ​​the nail rod with the ejector sleeve, improving the smoothness of the injection operation.

[0021] By adopting the above technical solution, the anti-wear mechanism can slide to cover the wear-prone area of ​​the nail rod through the ejector sleeve, improving the smoothness of the injection operation, making the mold run more smoothly, and improving the quality of shoe production.

[0022] In summary, the present invention has the following main advantages:

[0023] 1. This utility model, by setting an anti-wear mechanism, wherein the sleeve is slidably connected to the nail rod, and the sleeve can slidably cover the easily worn area of ​​the nail rod, solves the problem in actual use of shoe production molds. Due to the characteristics of TPU material itself and the mechanical stress that the mold is subjected to during repeated opening and closing, injection molding and other operations, the nail rod of the pull pin is prone to friction with other parts of the mold, which leads to wear. The presence of the sleeve allows the friction force that was originally directly applied to the nail rod to be partially borne by the sleeve during mold operation. The sleeve reduces the direct contact and friction between the nail rod and other parts by sliding, thereby effectively solving the technical problem of wear of the pull pin caused by the characteristics of TPU material and the mechanical stress of repeated use of the mold, and extending the service life of the pull pin.

[0024] 2. This utility model incorporates a spring in its anti-wear mechanism, which provides an elastic connection between the base and the mounting ring, allowing the ejector sleeve to return to its original position relative to the pin. During the mold's opening and closing process, the ejector sleeve will slide due to contact with other mold components. After the mold completes one operation, the spring's elasticity enables the ejector sleeve to quickly and accurately return to its initial position, ensuring the relative positional accuracy between the ejector sleeve and the pin. This allows the mold to maintain high precision during subsequent opening and closing processes. This not only helps reduce burrs caused by loose mold fit but also improves the smoothness of the injection operation, enhancing the production quality and efficiency of shoe components. It solves the technical problem of the ejector sleeve returning to its original position after sliding to maintain mold opening and closing precision and reduce burrs. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This is a rear-view three-dimensional structural diagram of the present invention;

[0027] Figure 3 This is a side view cross-sectional three-dimensional structural schematic diagram of the present invention;

[0028] Figure 4 This utility model Figure 1 A magnified structural diagram of point A in the middle.

[0029] In the diagram: 1. Pulling pin; 101. Pin rod; 102. Pin head; 103. Limiting seat; 2. Anti-wear mechanism; 201. Sleeve; 202. Base; 203. Spring; 204. Mounting ring. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] A type of anti-abrasion pull stud for shoe production molds, such as Figure 1-4 As shown, it includes a pull pin 1, which includes a pin rod 101, and an anti-wear mechanism 2 is slidably connected to the outer front end of the pin rod 101;

[0032] The anti-abrasion mechanism 2 includes a sleeve 201, which is slidably connected to the nail rod 101. A spring 203 is mounted on the bottom of the sleeve 201 via a base 202. A mounting ring 204 is provided at the bottom of the spring 203, and the mounting ring 204 is fixedly connected to the nail rod 101. This anti-abrasion mechanism 2 is provided for the anti-abrasion pull stud of the shoe production mold, in which the sleeve 201 is slidably connected to the nail rod 101. During frequent opening and closing of the mold and injection molding operations, the sleeve 201 can preferentially withstand friction with other components, avoiding direct wear of the nail rod 101, ensuring the integrity of the pull stud structure, and thus improving the stability and reliability of the mold in the shoe production process.

[0033] See Figure 1 , Figure 2 , Figure 3 , Figure 4 One end of the nail rod 101 is provided with a nail head 102, and the other end of the nail rod 101 is provided with a limiting seat 103. The nail head 102 can achieve good cooperation and connection with other parts of the mold to ensure the accurate installation of the pull nail in the mold; the limiting seat 103 can effectively limit the movement range of the anti-wear mechanism 2 and other components to prevent excessive displacement, ensure the normal operation of the pull nail during the mold operation process, thereby improving the shoe production efficiency.

[0034] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The sleeve 201 is fitted onto the front end of the nail rod 101 and is used to slide during mold operation to reduce direct wear of the nail rod 101. One end of the nail rod 101 is provided with a nail head 102 and the other end is provided with a limiting seat 103. The sleeve 201 is fitted onto the front end of the nail rod 101. When the mold is opened, closed, or injected, the sleeve 201 slides to reduce direct contact and friction between the nail rod 101 and other mold components, thereby reducing the wear of the nail rod 101, reducing mold failures caused by wear of the pull nail, ensuring the continuity of shoe production, and thus improving the quality of shoe products.

[0035] See Figure 1 , Figure 2 , Figure 3 , Figure 4 Spring 203 provides an elastic connection between base 202 and mounting ring 204, allowing sleeve 201 to return to its original position relative to nail bar 101. Sleeve 201 is fitted onto the front end of nail bar 101. Spring 203 is installed between base 202 at the bottom of sleeve 201 and mounting ring 204 fixed on nail bar 101, providing an elastic connection. When sleeve 201 is displaced due to mold operation, the elastic action of spring 203 allows sleeve 201 to quickly return to its original position relative to nail bar 101, ensuring the anti-abrasion mechanism 2 can continue to work normally, maintaining the accuracy of the mold, and ensuring the smooth progress of shoe production.

[0036] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The fixed connection point between the mounting ring 204 and the nail rod 101 forms the support end of the spring 203, which is used to stabilize the movement of the anti-abrasion mechanism 2. During the movement of the anti-abrasion mechanism 2, this support end provides stable support for the spring 203, allowing the spring 203 to better exert its elasticity, stabilizing the movement of the anti-abrasion mechanism 2, reducing mold vibration during operation, and improving the stability of shoe production.

[0037] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The base 202 and the sleeve 201 are fixedly connected to integrate the movement of the sleeve 201 and the spring 203. This fixed connection ensures more coordinated movement of the various components of the anti-abrasion mechanism 2 during mold operation, improving the mold's response speed and guaranteeing efficient shoe production.

[0038] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The sliding connection of the sleeve 201 allows for maintaining precision during the opening and closing of the spike 101, reducing burrs on the sprue. The sliding connection characteristic of the sleeve 201 enables high precision to be maintained during the opening and closing of the spike 101. In the injection molding process of shoe production molds, this effectively reduces burrs on the sprue caused by loose mold fit, improves the appearance quality of shoe components, and reduces the cost of subsequent burr treatment.

[0039] See Figure 1 , Figure 2 , Figure 3 , Figure 4The anti-abrasion mechanism 2 slidably covers the wear-prone area of ​​the nail rod 101 via the ejector sleeve 201, improving the smoothness of the injection operation. During the injection process, this structure enhances the smoothness of the operation, making the mold run more smoothly and reducing quality problems caused by operational difficulties, thereby improving the quality of shoe production.

[0040] The implementation principle of this embodiment is as follows: First, an anti-wear mechanism 2 is provided in the material pulling nail structure of the shoe production mold. The sleeve 201 of the anti-wear mechanism 2 is sleeved on the front end of the nail rod 101 and slidably connected to the nail rod 101. During mold operation, when the material pulling nail moves relative to other mold components, the sleeve 201 will preferentially contact the relevant components and slide. Since the sleeve 201 bears the frictional force that might originally act directly on the nail rod 101, the direct wear of the nail rod 101 is reduced, effectively protecting the nail rod 101 and extending the overall service life of the material pulling nail.

[0041] Secondly, the spring 203 in the anti-abrasion mechanism 2 is installed between the base 202 at the bottom of the ejector sleeve 201 and the mounting ring 204 fixed on the nail rod 101, providing an elastic connection. After the ejector sleeve 201 is displaced due to operations such as mold opening and closing, the elasticity of the spring 203 allows the ejector sleeve 201 to quickly return to its original position relative to the nail rod 101. The fixed connection point between the mounting ring 204 and the nail rod 101 provides a stable support end for the spring 203, ensuring the stability of the movement of the anti-abrasion mechanism 2. At the same time, the fixed connection between the base 202 and the ejector sleeve 201 allows the movement of the ejector sleeve 201 and the spring 203 to be integrated, ensuring the coordination of the ejector sleeve 201 during sliding and returning. The sliding connection characteristic of the ejector sleeve 201 allows for maintaining high precision when the nail rod 101 is opening and closing, reducing burrs caused by mold fit problems. Furthermore, the ejector sleeve 201 can slidably cover the easily worn area of ​​the nail rod 101, improving the smoothness of the injection operation, thereby improving the quality and efficiency of shoe production.

[0042] In addition, the nail head 102 at one end of the nail rod 101 and the limiting seat 103 at the other end can, during the installation and use of the pull nail, play a role in connecting with other parts of the mold, while the limiting seat 103 can limit the movement range of components such as the anti-wear mechanism 2 to prevent them from moving excessively and affecting the normal operation of the mold.

[0043] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An anti-abrasion pull stud for a shoe manufacturing mold, characterized in that: It includes a pull pin (1), the pull pin (1) includes a pin rod (101), and the outer front end of the pin rod (101) is slidably connected to an anti-wear mechanism (2); The anti-wear mechanism (2) includes a sleeve (201), which is slidably connected to the nail rod (101). A spring (203) is installed at the bottom of the sleeve (201) via a base (202). An installation ring (204) is provided at the bottom of the spring (203), and the installation ring (204) is fixedly connected to the nail rod (101).

2. The anti-abrasion pull stud of the shoe production mold according to claim 1, characterized in that: One end of the nail rod (101) is provided with a nail head (102), and the other end of the nail rod (101) is provided with a limiting seat (103).

3. The anti-abrasion pull stud of the shoe production mold according to claim 1, characterized in that: The sleeve (201) is fitted onto the front end of the nail rod (101) and is used to slide during mold operation to reduce direct wear on the nail rod (101).

4. The anti-abrasion pull stud of the shoe production mold according to claim 1, characterized in that: The spring (203) provides an elastic connection between the base (202) and the mounting ring (204) so ​​that the sleeve (201) can be reset relative to the nail bar (101).

5. The anti-abrasion pull stud of the shoe production mold according to claim 1, characterized in that: The fixed connection point between the mounting ring (204) and the nail rod (101) forms the support end of the spring (203), which is used to stabilize the movement of the anti-wear mechanism (2).

6. The anti-abrasion pull stud of the shoe production mold according to claim 1, characterized in that: The base (202) and the sleeve (201) are fixedly connected to integrate the movement of the sleeve (201) and the spring (203).

7. The anti-abrasion pull stud of the shoe production mold according to claim 1, characterized in that: The sliding connection of the sleeve (201) allows for maintaining accuracy when the nail bar (101) is opened and closed, thereby reducing burrs on the material head.

8. The anti-abrasion pull stud of the shoe production mold according to claim 1, characterized in that: The anti-wear mechanism (2) can slidably cover the wear-prone area of ​​the nail rod (101) through the sleeve (201), thereby improving the smoothness of the injection operation.

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