CN203077557U - Movable pouring gate structure of injection mold - Google Patents

Abstract

A movable gate structure of an injection mold, characterized in that it comprises a front mold core (1), a rear mold core (2) and a slider (3), and the slider (3) is provided with an injection runner (4), The latent gate (5) of the injection molding runner (4) is located at the mold parting surface, and the injection molding runner (4) is an insert type runner. The utility model adopts the design of a latent inlet gate on the slider, and uses the opening and closing action of the slider to automatically cut off the inlet gate, thereby improving the injection molding quality of products such as small medical catheter sleeves, and improving the high-quality rate of products.

Description

A movable gate structure of an injection mold

technical field

The utility model belongs to the technical field of injection molding, and specifically relates to a mold cooling system capable of controlling the temperature difference of molds according to the requirements of injection molding properties.

Background technique

Injection molding is an important means of product forming. Injection molding is the process of making various plastic materials into products that people need by using the principle that plastic materials change shape under high temperature and high pressure. Generally speaking, plastic The mold is a combined plastic mold used for compression molding, extrusion molding, injection molding, blow molding and low-foaming molding. A mold core is housed in the cavity. Existing common plastic molds are formed after the plastic raw material is melted and injected into the plastic mold through an injection molding machine.

There are many plastic products on the market (such as medical tube sleeves) that need to be made by combining soft and hard rubber. Such products are usually formed by special two-color injection molds. A key technical problem in the molding of two-color molding products is the gate structure of soft and hard rubber. Traditional soft and hard rubber two-color molds usually have two structures for the gate: 1. The first is that the hard rubber is designed on the back mold It is a latent gate or a side gate. The hard plastic is not ejected after injection molding. After the software injection is completed, it will be ejected at one time. The soft rubber is commonly used as a banana-shaped gate. 2. The second type is hard glue using a needle valve hot runner. Soft rubber also uses needle valve gate or banana gate. The use of hard rubber after injection molding is not directly ejected, and the method of ejecting after soft rubber injection will lead to deviations in the concentricity of the product; the needle valve type hot nozzle is used to directly enter the glue position due to the small size of the product. restricted

Utility model content

The purpose of this utility model is to provide a movable gate structure of an injection mold, which adopts a latent gate designed on the slider, and uses the opening and closing action of the slider to cut off the gate automatically, which improves the type of products such as small medical catheter sleeves. Excellent injection molding quality improves the quality rate of products.

Technical solutions

In order to achieve the above technical purpose, the utility model designs a movable gate structure of an injection mold, which is characterized in that it includes a front mold core, a rear mold core and a slider, and the slider is provided with an injection runner, and the latent type of the injection runner The gate is located at the parting surface of the mold, and the injection runner is an insert type runner.

The insert type flow channel is tapered.

Beneficial effect

The utility model provides a movable gate structure of an injection mold, which adopts a latent inlet gate designed on the slider, and uses the opening and closing action of the slider to automatically cut off the inlet gate, which improves the injection molding of small medical catheter sleeves. The forming quality improves the high-quality rate of the product.

Description of drawings

Accompanying drawing 1 is the mechanism schematic diagram of the present utility model.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the utility model is described further.

As shown in Figure 1, a movable gate structure of an injection mold includes a front mold core 1, a rear mold core 2, and a slider 3. The slider 3 is provided with an injection runner 4, and the latent type of the injection runner 4 The gate 5 is located at the parting surface of the mold, and the injection runner 4 is an insert-type runner.

The insert type flow channel is tapered.

The utility model provides a movable gate structure of an injection mold, which adopts a latent inlet gate designed on the slider, and uses the opening and closing action of the slider to automatically cut off the inlet gate, which improves the injection molding of small medical catheter sleeves. The forming quality improves the high-quality rate of the product. At the same time, the flow channel is made into a tapered shape to avoid impact on the mold forming inserts and avoid damage to the forming inserts.

Claims (2)

1. A movable gate structure of an injection mold is characterized in that: it comprises a front mold core (1), a rear mold core (2) and a slide block (3), and the slide block (3) is provided with an injection runner (4 ), the latent gate (5) of the injection molding runner (4) is located at the parting surface of the mold, and the injection molding runner (4) is an insert type runner. 2. The movable gate structure of an injection mold according to claim 1, wherein the insert-type runner is tapered.

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