Core pin fixing structure

Abstract

This utility model discloses a core pin-type fixing structure, including a moving mold that cooperates with a fixed mold to perform mold closing and injection molding. A core is provided inside the moving mold and locked in place by a pin structure. The cavity is modularly designed, allowing for adaptation to the production needs of different products by changing the cavity. The pin-type bidirectional limiting tooth structure on both sides of the cavity ensures stable fixing; the locking slider structure makes the moving mold easy to assemble and disassemble.

Description

Technical Field

[0001] This utility model relates to the field of elevator button injection molding production, and in particular to a core pin type fixing structure. Background Technology

[0002] Most injection molds adopt an integral design, that is, the moving mold is fixedly connected to the cavity. When the product shape needs to be changed, the entire moving mold must be re-processed or the mold must be replaced, resulting in high production costs, long cycle time and poor flexibility.

[0003] Existing split-type moving mold structures also suffer from problems such as unstable cavity fixing methods. For example, the cavity may loosen due to vibration or pressure during injection molding, affecting product accuracy; complex assembly, cumbersome operation, and low production efficiency. Utility Model Content

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A core pin type fixing structure includes a moving mold that cooperates with a fixed mold to perform mold closing injection molding, wherein a core is provided in the moving mold and locked in place by a pin structure.

[0006] Furthermore, the core is placed at the bottom of the moving mold, and locking sliders are provided on opposite sides of the core, the locking sliders being fixed to the core by the pin structure.

[0007] Furthermore, the pin structure is at least one locking pin fixed to the side of the locking slider, and the locking pin is fixed by inserting a locking tongue toward the core into the core.

[0008] Furthermore, the end of the locking tongue engages with the side of the cavity, and a locking tongue limiting tooth is provided at the end of the locking tongue, and a cavity limiting tooth is provided on the side of the cavity, wherein the locking tongue limiting tooth and the cavity limiting tooth are engaged and fixed.

[0009] Furthermore, the tooth extension direction of the locking tongue limiting tooth is opposite to that of the locking tongue cavity limiting tooth.

[0010] Furthermore, the locking slider is slidably disposed at the bottom of the moving mold, and the upper sealing plate of the moving mold has a locking block that is inserted downward into the locking slider.

[0011] Furthermore, the locking block has a wedge-shaped cross-section.

[0012] The beneficial effects of this utility model are as follows:

[0013] The present invention provides a core pin type fixing structure, which modularly designs the cavity and can adapt to the production needs of different products by changing the cavity; the pin type bidirectional limiting tooth structure on both sides of the cavity ensures stable fixing; the locking slider structure makes the moving mold easy to disassemble and assemble. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall structure of an injection mold.

[0016] Figure 2 This is a schematic diagram of the structure of the upper sealing plate of this utility model.

[0017] Figure 3 This is an exploded view of the moving model of this utility model.

[0018] Figure 4 This is an assembly diagram of the core of this utility model.

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

[0020] Figure 6 This is a schematic diagram of the structure of the locking pin end of this utility model. Detailed Implementation

[0021] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. The above description is for the purpose of simplifying the description of this utility model and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0022] Exemplary embodiments of this application will now be described with reference to the accompanying drawings. However, it should be understood that this application can be presented in many different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments. Throughout the drawings, the same reference numerals denote the same or functionally identical elements.

[0023] Figures 1 to 3The diagram illustrates the connection structure between the upper sealing plate and the moving mold of this small mold. The moving mold 300 is positioned below the upper sealing plate 200 via guide posts 210 and forms an integral structure with the upper sealing plate 200. A downwardly extending locking block 220 is located at the bottom of the upper sealing plate 200. A pair of locking sliders 320 are slidably disposed at the bottom of the moving mold 300. Locking sliders 320 have locking grooves 321. The locking block 220 passes through the moving mold 310 and inserts into the locking grooves 321 to restrict the lateral sliding of the locking sliders 320, thereby fixing the locking sliders 320.

[0024] In some embodiments, the cross sections corresponding to the locking block 220 and the locking groove 321 are both wedge-shaped, which facilitates the assembly of the two together.

[0025] In some embodiments, the locking slider 320 has a laterally extending wing 322, and a corresponding groove 312 is provided at the bottom of the moving mold 310, thereby realizing the sliding function of the locking slider 320 within the moving mold 300.

[0026] Reference Figures 4 to 6 A locking pin 340 is fixed on one side of the locking slider 320. The locking pin 340 has a fixed end 342 for locking in the slot 323 and a locking tongue 341 that is inserted into the core 330 to form a pin fixing structure. The core 330 is fixed to the bottom of the moving mold 310 by the pin structures from opposite sides. Furthermore, after the locking tongue 341 is inserted into the core 330, it engages with the cavity 331 in the core 330. A locking tongue limiting tooth 341a is provided at the end of the locking tongue 341, and a cavity limiting tooth 331a is provided on the outside of the cavity 331. The locking tongue limiting tooth 341a and the cavity limiting tooth 331a extend in different directions to achieve mutual locking and limiting. The characteristic of this small mold is that the cavity 331 is designed as an independently assembleable modular unit. Without redesigning the moving mold 300 and fixed mold 100, different shapes of call buttons can be produced simply by replacing the cavity 331. The aforementioned limiting tooth structure can quickly clamp and fix the cavity 331 from both sides. During assembly, the cavity 331 is first vertically fixed to the core 300 using fasteners. Then, the locking slider 320 with locking pins 340 is inserted into the core 300 from both sides. Finally, the moving mold 310 with the core 300 is closed with the upper sealing plate 200, and the locking block 220 is inserted into the locking groove 321 to complete the assembly.

[0027] When a component is described in the specification as being "on", "fixed" to, "connected" to, or "joined" to another component, the component may be directly located on, fixed to, connected to, joined to, or in contact with the other component, or there may be an intermediate component present.

[0028] It is understood that although the terms "first," "second," etc., may be used herein to describe different elements, these elements should not be limited by these terms. These terms are merely used to distinguish one element from another. Therefore, a first element may be referred to as a second element without departing from the teachings of this application.

Claims

1. A core pin fixing structure characterized by comprising: Includes a moving mold that works in conjunction with a fixed mold to perform injection molding, wherein the moving mold contains a core that is locked and fixed by a pin structure; The core is placed at the bottom of the moving mold, and locking sliders are provided on opposite sides of the core. The locking sliders are fixed to the core by the pin structure.

2. The core pin fixing structure according to claim 1, wherein The pin structure is at least one locking pin fixed to the side of the locking slider, and the locking pin is fixed by inserting a locking tongue toward the core.

3. A core pin fixing structure according to claim 2, wherein The end of the latch engages with the side of the cavity. A latch limiting tooth is provided at the end of the latch, and a cavity limiting tooth is provided on the side of the cavity. The latch limiting tooth and the cavity limiting tooth are engaged and fixed.

4. A core pin fixing structure according to claim 3, wherein The locking tongue limiting teeth extend in the opposite direction to the locking tongue cavity limiting teeth.

5. A core pin fixing structure according to any one of claims 1 to 4, wherein The locking slider is slidably disposed at the bottom of the moving mold, and the upper sealing plate of the moving mold has a locking block that is inserted downward into the locking slider.

6. A core pin fixing structure according to claim 5, wherein The locking block has a wedge-shaped cross-section.

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