Splicing needle capable of preventing splicing needle push block from falling into injection mold cavity

Abstract

The utility model discloses a splicing needle capable of preventing a splicing needle push block from falling into an injection mold cavity, which comprises a needle body, the needle body is arranged on an injection mold of the splicing needle push block, a supporting mechanism is arranged on the needle body, the needle body comprises a main support and an upper boss fixed on the main support, a buffer groove is formed in the main support, and the upper boss is fixed on the main support. A plurality of containing grooves are formed in the upper boss, the supporting mechanism comprises a spring and a sliding body fixedly connected with the spring, a plurality of springback structures are fixed to the sliding body, the springback structures have certain elasticity, the springback structures can elastically stretch out and draw back within a certain range with the sliding body as a base body, and each springback structure comprises an elastic piece. The elastic piece is arranged in the containing groove. According to the splicing needle capable of preventing the splicing needle push block from falling into the injection mold cavity, when the push block is assembled, the inner wall of the push block is in contact with the supporting surface of the elastic piece, the push block is supported by utilizing the elastic effect of the elastic piece, and the situation that the push block is too tight and difficult to assemble due to too small size or falls off due to too large size is avoided.

Description

Technical Field

[0001] This utility model relates to a pin assembly, specifically a pin assembly that prevents the pin assembly pusher block from falling into the injection mold cavity. Background Technology

[0002] Currently, in the use of injection molds with ejector pins, due to manufacturing tolerances, some ejector pins are either too large or too small during assembly. If the ejector pin is too large, it may fall into the mold cavity during installation, causing damage to the slider and mold due to compression. If the ejector pin is too small, it will be too tight and difficult to install. To address this, an ejector pin design has been developed to fix the ejector pin and prevent it from falling into the injection mold cavity. Utility Model Content

[0003] The purpose of this invention is to provide a pin that prevents the ejector block from falling into the injection mold cavity. By setting multiple spring pieces, each of which has an inclined surface and a supporting surface, the ejector block is compressed by the inclined surface during assembly. Finally, the inner wall of the ejector block comes into contact with the supporting surface of the spring piece. The elasticity of the spring piece supports the ejector block, thereby preventing the ejector block from being too tight and difficult to install due to its small size or falling off due to its large size.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a pin for preventing a pin ejector block from falling into the injection mold cavity, comprising a pin body, the pin body being disposed on the injection mold of the pin ejector block, a support mechanism being provided on the pin body, and the pin body including a main support and an upper boss fixed on the main support, a buffer groove being formed inside the main support, and multiple receiving grooves being formed on the upper boss, the support mechanism including a spring and a sliding body fixedly connected to the spring, multiple spring-loaded structures being fixed on the sliding body, and the sliding body and the spring-loaded structures being designed as an integral part, the spring-loaded structures having a certain elasticity, the spring-loaded structures being able to elastically expand and contract within a certain range with the sliding body as the base, the spring-loaded structures including spring pieces, the spring pieces being disposed in the receiving grooves.

[0005] Preferably, both the spring and the sliding body are disposed in the buffer groove, and a bottom support block fixed to the main support is disposed at the bottom of the buffer groove, and the end of the spring away from the sliding body is fixedly connected to the bottom support block.

[0006] Preferably, all the receiving slots are connected to the buffer slot, and the upper boss is penetrated on the side of the receiving slot away from the buffer slot.

[0007] Preferably, a positioning seat is fixed on the upper boss, with one end of the positioning seat located on the outside of the upper boss and the other end extending into the receiving groove; the positioning seat is used to abut against multiple spring pieces, thereby preventing the spring pieces from being excessively compressed in the receiving groove.

[0008] Preferably, the sliding body fits snugly against the inner wall of the buffer groove, so that the sliding body can only move in one direction under the action of the spring, and will not sway within the buffer groove.

[0009] Preferably, the spring sheet is provided with an inclined surface and a support surface; when the push block is installed, the push block first contacts the inclined surface, and the push block can use the inclined surface to squeeze the spring sheet, so that the spring sheet moves slightly into the receiving groove, and finally the inner wall of the push block contacts the support surface. The inclined surface will generate a reaction force on the push block, thereby using the support surface to support the push block. The push block is located on the outside of the spring sheet.

[0010] Preferably, multiple spring-loaded structures are distributed in the circumferential direction of the upper boss, and at least three spring-loaded structures are provided.

[0011] The end of the sliding body away from the spring is fixedly connected to a stabilizing post.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In the assembly of the push block, the push block is squeezed by the inclined surface, and finally the inner wall of the push block contacts the supporting surface of the spring. The elasticity of the spring supports the push block, thereby avoiding the push block from being too tight and difficult to install due to its small size or falling off due to its large size. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the injection mold and needle body of the needle ejector block of this utility model;

[0014] Figure 2 This is a schematic diagram of the needle body of this utility model;

[0015] Figure 3 This utility model Figure 2 Cross-sectional view along the AA direction;

[0016] Figure 4 This utility model Figure 2 A cross-sectional view along the AA direction;

[0017] Figure 5 This utility model Figure 2 Enlarged view of the structure at point B in the middle;

[0018] Figure 6 This is a cross-sectional view of the pusher block of this utility model after it is installed on the needle body.

[0019] The reference numerals and names in the figure are as follows: 1. Needle body; 11. Main support; 12. Buffer groove; 13. Bottom support block; 14. Upper boss; 15. Positioning seat; 16. Receiving groove; 2. Support mechanism; 21. Spring; 22. Sliding body; 23. Rebound structure; 231. Spring piece; 232. Inclined surface; 233. Support surface; 24. Stabilizing pile. Detailed Implementation

[0020] 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.

[0021] In the description of the embodiments of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0023] Please see Figures 1 to 6 This utility model provides an embodiment of a pin for preventing a pin ejector block from falling into the injection mold cavity, comprising a pin body 1, which is disposed on the injection mold of the pin ejector block. A schematic diagram of the injection mold of the pin ejector block is attached. Figure 1A support mechanism 2 is provided on the needle body 1, and the needle body 1 includes a main support 11 and an upper boss 14 fixed on the main support 11. A buffer groove 12 is formed inside the main support 11, and a bottom support block 13 fixed to the main support 11 is provided at the bottom of the buffer groove 12. A positioning seat 15 is fixed on the upper boss 14, and multiple receiving grooves 16 are formed on the upper boss 14. The multiple receiving grooves 16 are all connected to the buffer groove 12, and the side of the receiving groove 16 away from the buffer groove 12 passes through the upper boss. 14. One end of the positioning seat 15 is located outside the upper boss 14, and the other end extends into the receiving groove 16. The support mechanism 2 includes a spring 21 and a sliding body 22 fixedly connected to the spring 21. Both the spring 21 and the sliding body 22 are disposed in the buffer groove 12. The end of the spring 21 away from the sliding body 22 is fixedly connected to the bottom support block 13. The sliding body 22 fits against the inner wall of the buffer groove 12, so that the sliding body 22 can only move in one direction under the action of the spring 21, and will not sway in the buffer groove 12. The sliding body 22 has multiple rebound structures 23 fixed on it. A stabilizing post 24 is fixedly connected to the end of the sliding body 22 away from the spring 21. The sliding body 22 and the rebound structures 23 are designed as a single unit. The rebound structures 23 have a certain degree of elasticity and can elastically expand and contract within a certain range using the sliding body 22 as a base. The rebound structure 23 includes spring pieces 231, and a positioning seat 15 is used to abut against the multiple spring pieces 231, thereby preventing the spring pieces 231 from being excessively compressed within the receiving groove 16. The spring piece 231 is disposed within the receiving groove 16. The spring piece 231 has an inclined surface 232 and a supporting surface 233. When the push block is installed, the push block first contacts the inclined surface 232. The push block can use the inclined surface 232 to press the spring piece 231, causing the spring piece 231 to move slightly into the receiving groove 16. Finally, the inner wall of the push block contacts the supporting surface 233. The inclined surface 232 will generate a reaction force on the push block, thereby using the supporting surface 233 to support the push block. See the attached diagram for a schematic diagram of the push block. Figure 6 Located on the outside of the spring piece 231, multiple spring-rebound structures 23 are distributed in the circumferential direction of the upper boss 14, and at least three spring-rebound structures 23 are provided.

[0024] When this utility model is in use, the push block (attached) Figure 6 The portion located outside the spring piece 231 is sleeved on the outer side of the upper boss 14 away from the main support 11. During this process, the inner wall of the push block first contacts the inclined surface 232, and the spring piece 231 is pressed into the receiving groove 16 by means of the inclined surface 232. At the same time, the push block passes over the inclined surface 232, and finally the inner wall of the push block contacts the support surface 233. Since the spring piece 231 is elastic, it will generate a reaction force on the push block, so that the push block is fixed on the outer side of multiple spring pieces 231.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pin for preventing a pin ejector block from falling into an injection mold cavity, comprising a pin body (1), wherein the pin body (1) is disposed on the injection mold of the pin ejector block, characterized in that: The needle body (1) is provided with a support mechanism (2), and the needle body (1) includes a main support (11) and an upper boss (14) fixed on the main support (11). A buffer groove (12) is formed inside the main support (11), and a plurality of receiving grooves (16) are formed on the upper boss (14). The support mechanism (2) includes a spring (21) and a sliding body (22) fixedly connected to the spring (21). A plurality of rebound structures (23) are fixed on the sliding body (22), and the sliding body (22) and the rebound structure (23) are designed as an integral unit. The rebound structure (23) is elastic, and the rebound structure (23) includes a spring piece (231), which is disposed in the receiving groove (16).

2. The pin for preventing the pin ejector block from falling into the injection mold cavity according to claim 1, characterized in that: The spring (21) and the sliding body (22) are both located in the buffer groove (12). The bottom of the buffer groove (12) is provided with a bottom support block (13) fixed to the main support (11). The end of the spring (21) away from the sliding body (22) is fixedly connected to the bottom support block (13).

3. The pin for preventing the pin ejector block from falling into the injection mold cavity according to claim 1, characterized in that: The plurality of the receiving grooves (16) are connected to the buffer groove (12), and the upper boss (14) is penetrated on the side of the receiving groove (16) away from the buffer groove (12).

4. The pin for preventing the pin ejector block from falling into the injection mold cavity according to claim 1, characterized in that: A positioning seat (15) is fixed on the upper boss (14). One end of the positioning seat (15) is located outside the upper boss (14), and the other end extends into the receiving groove (16).

5. The pin for preventing the pin ejector block from falling into the injection mold cavity according to claim 1, characterized in that: The sliding body (22) is attached to the inner wall of the buffer groove (12).

6. The pin for preventing the pin ejector block from falling into the injection mold cavity according to claim 1, characterized in that: The spring piece (231) is provided with an inclined surface (232) and a support surface (233).

7. The pin for preventing the pin ejector block from falling into the injection mold cavity according to claim 1, characterized in that: Multiple springback structures (23) are distributed in the circumferential direction of the upper boss (14).

8. The pin for preventing the pin ejector block from falling into the injection mold cavity according to claim 1, characterized in that: The sliding body (22) is fixedly connected to a stabilizing pile (24) at the end away from the spring (21).

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