CN203567041U - Forming mechanism of injection mold for automobile washing cover plate - Google Patents

Abstract

The utility model provides a forming mechanism of an injection mold for an automobile cleaning cover plate, which belongs to the technical field of machinery. It solves the problem that the existing molds do not have mutual limiting functions. The molding mechanism of the automobile cleaning cover injection mold includes a core and a cavity. The core has a protruding molding surface, and the cavity has a concave molding part. Position limit mechanism. The molding mechanism can conveniently guide the molding process through the limit mechanism set between the core and the cavity, and prevent minor deviations in the injection molding process from causing flashes on the workpiece and insufficient injection pressure.

Description

A forming mechanism of an injection mold for a car wash cover

technical field

The utility model belongs to the technical field of machinery and relates to an injection mold, in particular to an injection mold for an automobile cleaning cover plate.

Background technique

Injection mold is tooling equipment used in plastic injection molding process, it is mainly used for molding thermoplastic products. The injection mold consists of two parts, the movable mold and the fixed mold. The movable mold is installed on the movable template of the injection machine, and the fixed mold is installed on the fixed template of the injection machine. Before injection, the movable and fixed molds are closed under the drive of the injection machine to form a mold. Cavity and gating system, the injection machine injects the plasticized plastic melt into the cavity through the gating system, after cooling and solidification, the movable and fixed molds are opened, and the demoulding mechanism pushes out the plastic to complete the injection molding action of a workpiece.

The main molding mechanism of the mold in the prior art is the core and the cavity. The core and the cavity in the prior art can be divided into integral type and embedded type. The integral type is the direct processing of the core or cavity. , its structural stability is high, but its cost is high, and its processing is inconvenient. For some core cavities with high molding requirements, its material cost is also high. The embedded core cavity means that the split core cavity is processed and then embedded in the core or cavity shell. Due to the split type, the core and cavity are easy to process, and the materials can also be selected from relatively high-quality materials. lower. In the prior art, plastic is injected into the mold after the core and cavity are closed, and the core cavity is opened after molding. Due to the regular structure, the parting surfaces of the core and cavity are mostly flat, even if they are not flat, the core The mold closing position with the cavity is also a plane, so the production is simple and convenient, and for some plastic parts that are inclined. Because the overall structure is inclined, if the core and the cavity are still made into a plane, the mold will take up a lot of space, the material cost is high, and the quality is large, which will affect the processing.

Contents of the invention

The purpose of this utility model is to solve the above-mentioned problems in the existing technology, and propose a molding mechanism for the injection mold of the automobile cleaning cover plate. It acts as an auxiliary guide for the core and the cavity.

The purpose of this utility model can be achieved through the following technical proposals: a molding mechanism of an injection mold for a car cleaning cover, including a core and a cavity, the core has a protruding molding surface, and the cavity is The molded portion having an inner concave is characterized in that the core and the cavity have a limiting mechanism for limiting the radial positions of the core and the cavity.

In the molding mechanism of the above-mentioned injection mold for the car wash cover, the limit mechanism includes a limit center column located in the middle of the edge of the cavity and a limit bayonet on the core that cooperates with the limit center column .

In the molding mechanism of the above-mentioned injection mold for a car wash cover, the limiting mechanism also includes two limiting bosses located at the end of the cavity and a limiting boss on the edge of the core that cooperates with the limiting bosses. bit notch.

In the above-mentioned molding mechanism of the injection mold for the car wash cover, one of the limiting bosses and the limiting notch is also provided with an error-proof mark.

In the above-mentioned molding mechanism of the injection mold for the car wash cover, the core has several ejection holes for the ejector pins to pass through.

In the above-mentioned molding mechanism of the injection mold for the car wash cover, the mold cavity is provided with a sprue.

Compared with the prior art, the molding mechanism can conveniently guide the molding process through the limit mechanism set between the core and the cavity, preventing slight deviation during the injection molding process from causing flashes on the workpiece, and the injection pressure Insufficiency and other issues.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of core in the utility model;

Fig. 2 is the three-dimensional structure schematic diagram of the cavity of the utility model;

Fig. 3 is a schematic diagram of the three-dimensional structure of the utility model.

In the figure, 1. core; 11. ejection hole; 2. cavity; 21. sprue; 3. forming surface; 4. forming part; 5. limit center column; 6. limit bayonet; 7 , Limit boss; 8, Limit notch; 9, Mistake proof mark.

Detailed ways

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

As shown in Figures 1 to 3, the molding mechanism of the injection mold for the car cleaning cover includes a core 1 and a cavity 2, the core 1 has a protruding molding surface 3, and the cavity 2 has a concave molding part 4. The core 1 and the cavity 2 have a limiting mechanism that limits the radial positions of the core 1 and the cavity 2 . The limit mechanism includes a limit center column 5 located in the middle of the edge of the cavity 2, a limit bayonet 6 located on the core 1 and matched with the limit center column 5, and two positions at the end of the cavity 2. The limiting boss 7 and the limiting notch 8 located at the edge of the core 1 and matching the limiting boss 7 , one of the limiting boss 7 and the limiting notch 8 is also provided with an error-proof mark 9 .

In order to facilitate the ejection of the workpiece after molding, several ejection holes 11 for the ejector pin to pass are reserved on the core 1 . In addition, in order to facilitate the injection of plastic into the cavity 2 after gate pouring, the cavity 2 is also provided with a sprue channel 21 .

The core 1 and the cavity 2 are fixedly installed in the core 1 seat and the cavity 2 seat of the mold, and two mutually symmetrical car cleaning cover-shaped cavities are formed between the core 1 and the cavity 2. After core 1 and cavity 2 are molded together, the limiting center column 5 on cavity 2 can be embedded in the limiting bayonet 6 on core 1, and the limiting boss 7 on cavity 2 can be embedded on core 1 Inside the limiting notch 8. Using the cooperation and guidance between the limit boss 7 and the limit notch 8 and the limit center column 5 and the limit bayonet 6, the core 1 and the cavity 2 can be accurately closed when the mold is closed, ensuring Clamping accuracy.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (6)

1. the shaping mechanism of an automobile washing injection mold for cover plate tool, comprise core and die cavity, the bossed forming surface of tool on described core, has the forming part of indent on described die cavity, it is characterized in that, described core and die cavity have the position-limit mechanism of restriction core and die cavity radial position.

2. the shaping mechanism of automobile washing injection mold for cover plate tool according to claim 1, is characterized in that, described position-limit mechanism comprises and is positioned at the spacing center pillar at die cavity edge middle part and is positioned at the spacing bayonet socket matching with spacing center pillar on core.

3. the shaping mechanism of automobile washing injection mold for cover plate tool according to claim 2, is characterized in that, described position-limit mechanism also comprises and is positioned at two positive stop lug boss of die cavity end and is positioned at the limit notch that core edge matches with positive stop lug boss.

4. the shaping mechanism of automobile washing injection mold for cover plate tool according to claim 3, is characterized in that, is also provided with mistake proofing sign in one of them described positive stop lug boss and limit notch.

5. according to the shaping mechanism of the automobile washing injection mold for cover plate tool described in claim 1 or 2 or 3 or 4, it is characterized in that on described core, thering is several holes that ejects for passing for push rod.

6. according to the shaping mechanism of the automobile washing injection mold for cover plate tool described in claim 1 or 2 or 3 or 4, it is characterized in that thering is pouring head on described die cavity.

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