Double-layer injection mold

Abstract

The utility model discloses a double-layer injection mold. The double-layer injection mold comprises a base plate, a glue injection hole, a runner, a first cavity and a second cavity, by means of the double-ring cavity structure that the first cavity is arranged around the glue injection hole and the second cavity is arranged around the first cavity, the distance between each cavity and the glue injection hole is effectively controlled, and the situation that due to the fact that each cavity is too far away from the material injection hole, material injection is insufficient is avoided.

Description

Technical Field

[0001] This utility model specifically relates to a double-layer injection mold. Background Technology

[0002] Currently, injection mold structures are frequently used in the production of large-scale products. The technology is relatively mature, and the mold utilization rate is high. The advantages of large-scale product mold design include: one injection point typically supplies material to 3-6 cavities; the distance between cavities and injection points is reasonable, avoiding excessive distances that could hinder injection, cause glue aging, or prevent injection altogether; the cavity layout is reasonable, with an optimized number of cavities, fully utilizing the mold area; and the injection point positions are standardized, with an 8-point cold runner design. Figure 1 (as shown) and 16-point injection cold runner ( Figure 2 (As shown), the cold runner is shared and resources are fully utilized to save production costs;

[0003] However, many small-sized products on the market still utilize molds in their production (such as...). Figure 3 As shown), manual feeding is still used in its production. These products use strip or solid parts, and the feeding auxiliary time is relatively long during production. Pre-forming process is required to cut the material before vulcanization. Using the original 8-point or 16-point injection mold structure, the cavity may be too far from the injection point or the number of cavities may be too small, making it impossible to achieve optimal cavity utilization. Utility Model Content

[0004] The purpose of this invention is to provide a double-layer injection mold to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a double-layer injection mold.

[0006] The invention includes: a substrate, wherein a glue injection hole is formed on the substrate, and a plurality of first cavities are evenly distributed around the glue injection hole, and adjacent first cavities are interconnected, and one side of the connection between adjacent first cavities is connected to the glue injection hole, and the other side is also connected to a second cavity.

[0007] Preferably, the edge of the second cavity is close to the edge of two adjacent first cavities.

[0008] Preferably, there are several distribution channels evenly distributed around the injection hole, one end of which is connected to the injection hole and the other end is connected to the connection point of the first cavity.

[0009] Preferably, the flow channel is disposed between two adjacent first cavities.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] The double-circle cavity structure that the first cavity surrounds the glue injection hole and the second cavity surrounds the first cavity effectively controls the distance between each cavity and the glue injection hole, and avoids the situation that each cavity is too far from the glue injection hole to cause insufficient injection. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 An 8-point injection cold runner schematic diagram adapted to the existing large-specification product mold structure diagram;

[0013] Figure 2 A 16-point injection cold runner schematic diagram adapted to the existing large-specification product mold structure diagram;

[0014] Figure 3 A small-specification product mold design diagram;

[0015] Figure 4 A substrate schematic diagram of the utility model;

[0016] Figure 5 An enlarged view of A in Figure 4 ;

[0017] In the figure: 1, a substrate 2, a glue injection hole; 3, a shunt; 4, a first cavity; 5, a second cavity. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] Please refer to Figures 1-5 , the utility model provides a kind of technical scheme: a double-layer injection type mold, comprising:

[0020] It comprises: substrate 1, glue injection hole 2 is set on the substrate 1, the periphery of the glue injection hole 2 is evenly distributed with several first cavities 4, and adjacent first cavities 4 are communicated with each other, and the communication place of adjacent first cavities 4 is communicated with the glue injection hole 2 on one side, and second cavity 5 is also communicated on the other side.

[0021] The double-circle cavity structure that the first cavity 4 surrounds the glue injection hole 2 and the second cavity 5 surrounds the first cavity 4 effectively controls the distance between each cavity and the glue injection hole 2, and avoids the situation that each cavity is too far from the glue injection hole 2 to cause insufficient injection.

[0022] In the embodiment, the edge of the second cavity 5 is close to the edges of the two adjacent first cavities 4.

[0023] The edge of the second cavity 5 is close to the edges of the two adjacent first cavities 4, so that the area of the substrate 1 is effectively utilized.

[0024] In the embodiment, the injection hole 2 is surrounded by a plurality of distribution channels 3, one end of the distribution channel 3 is communicated with the injection hole 2, and the other end is communicated with the communication position of the first cavity 4.

[0025] In the embodiment, the distribution channel 3 is arranged between the two adjacent first cavities 4.

[0026] The distribution channel 3 is arranged between the two adjacent first cavities 4, so that one distribution channel 3 is communicated with two adjacent first cavities 4, avoiding excessive distribution channels 3 and saving processing cost.

[0027] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A two-layer injection-molded class mold characterized by, The application relates to a substrate (1) with glue injection holes (2) and first cavities (4) and second cavities (5). The edge of the second cavity (5) is close to the edges of two adjacent first cavities (4).

2. A two-layer injection-molded mold according to claim 1, characterized in that: The glue injection holes (2) are surrounded by a plurality of shunt channels (3), one end of the shunt channels (3) is communicated with the glue injection holes (2), and the other end is communicated with the communication positions of the first cavities (4).

3. A two-layer injection-molded article according to claim 2, characterized in that: The shunt channels (3) are arranged between two adjacent first cavities (4).

4. A two-layer injection-molded article according to claim 3, characterized in that: ​

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