CN204398252U - Cover half envelope material muscle insert merges tool structure for processing - Google Patents

Abstract

The utility model relates to a processing tooling structure for a plastic mold structure, in particular to a processing tooling structure for sealing rib inserts, and belongs to the technical field of injection mold manufacturing and processing. A combined processing tooling structure for sealing rib inserts in a fixed mold, characterized in that it includes a fixed mold (4), sealing rib inserts (3), washers, and bolts; the sealing rib inserts (3) are embedded in the fixed mold , with a washer for a height of 8-12mm; the bottom of the sealing rib insert (3) is provided with a screw hole, and the washer is set on the screw fixing the sealing rib insert; the sealing surface of the sealing rib insert and the one-time product form The pointed part is higher than the upper end surface of the fixed die (4). The utility model has no flanging and rounded corners at the contact part between the sealing rib insert and the primary product, so that the boundary between the primary type and the secondary type on the surface of the injection molded product is clear; the discharge machining of EDM is reduced, and the processing cycle is shortened; the operation of adding a gasket is convenient .

Description

Combined processing tooling structure of fixed mold sealing rib insert block

technical field

The utility model relates to a processing tooling structure for a plastic mold structure, in particular to a processing tooling structure for sealing rib inserts, and belongs to the technical field of injection mold manufacturing and processing.

Background technique

In the field of injection mold manufacturing, the application of two-color and three-color injection molding technology is becoming more and more extensive. For example, in the field of car lamp manufacturing, all kinds of colorful light distribution mirrors add a lot of color to the car lights. Taking the two-color mold as an example, in the injection molding production process, during the first injection molding process, the fixed mold is first injection-molded with white plastic, and the white plastic is adhered to the movable mold; after the rotation of the movable mold by the manipulator, the second On the second station, that is, during the second injection molding process, the red plastic produced by the second injection molding of the fixed mold covers the entire product, thereby forming a multi-color product.

Since the one-time injection molding area is relatively small, it should be noted that during the second injection molding, the flow of red plastic may impulsively shape the product that has been formed for the first time, causing its glue position to be deformed. Therefore, during the first injection molding, the molten state The white plastic is sealed by the sealing material rib on the fixed mold.

Due to the limitation of cutting tools, the sharp corners formed by the sealing surface of the sealing rib and the one-time product cannot be processed by CNC machine tools during the combined processing of the one-shot sealing rib of the fixed mold. EDM (Electrical Discharge Machining), that is, electric discharge machining, is required. The effect after EDM will still form a small fillet of R0.3mm. In this way, when the secondary product is injected, the red plastic will fill the small rounded part, making the boundary between the primary product and the secondary product not clear enough. The surface quality of the product after injection molding is not good.

Contents of the invention

The technical problem to be solved by the utility model is: the existing sharp corner part formed by the sealing material surface of the sealing material rib and the disposable product cannot be processed by the numerical control machine tool, and needs to be processed by EDM. After EDM, the sealing rib seal The sharp corner formed by the material surface and the primary product will form a small rounded corner of R0.3mm, which will cause the red plastic to fill the small rounded part when the secondary product is injected, making the primary product and secondary product The boundaries are not clear enough. The surface quality of the product after injection molding is not good.

The utility model takes the following technical solutions:

A combined processing tooling structure for a fixed mold sealing rib insert, comprising a fixed mold 4, a sealing rib insert 3, washers, and bolts; the sealing rib insert 3 is inserted into the fixed mold, and the gasket is used to pad the height of 8-12mm; The bottom of the material rib insert 3 is provided with a screw hole, and the washer is sleeved on the screw for fixing the sealing material insert;

The sealing rib insert is embedded in the fixed mold, and the gasket is used to raise the height, and the gasket is set on the screw fixing the sealing rib insert. First process the sealing rib insert, including the sealing material surface, then take out the sealing rib insert and process the one-time product surface. In this way, the sealing rib insert and the disposable product have a perfect sharp corner.

Further, the height of the sealing rib insert 3 is 2-5mm.

Further, two pairs of sealing rib inserts 3 are embedded in the fixed mold 4 .

Furthermore, in each pair of sealing rib inserts, the heights of the two inserts are different.

The beneficial effects of the utility model are:

1) There is no flanging and fillet at the contact part of the sealing rib insert and the primary product, so that the boundary between the primary type and the secondary type on the surface of the injection molded product is clear.

2) Reduce the discharge machining of EDM and shorten the processing cycle.

3) It is convenient to add gaskets.

Description of drawings

Figure 1 is a schematic diagram of a two-color molded product and a sealing rib insert.

Fig. 2 is a schematic diagram of the clamping state of the sealing rib insert of the fixed mold in the fixed mold.

Fig. 3 is a schematic diagram of two pairs of sealing rib inserts being inserted into the fixed mold after being raised by the bottom gasket by 10mm.

Fig. 4 is a structural schematic diagram of a pair of sealing rib inserts.

Fig. 5 is a schematic diagram of the washer and the screw fixing the sealing rib insert.

In the figure, 1. The secondary injection molding area of the molded product is mostly red, 2. The primary injection molding area is mostly white, 3. The sealing rib insert, 4. The fixed mold, 5 sealing rib inserts and the primary The sharp corner part of the surface junction of the type product.

Detailed ways

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

Referring to Fig. 1-Fig. 5, a fixed mold sealing rib insert combined processing tooling structure includes a fixed mold 4, a sealing rib insert 3, washers, and bolts; the sealing rib insert 3 is inserted into the fixed mold, and the gasket The pad height is 8-12mm; there is a screw hole at the bottom of the sealing rib insert 3, and the washer is set on the screw fixing the sealing rib insert; the sharp corner formed by the sealing material surface of the sealing rib insert and the disposable product is higher than The upper end face of fixed mold 4.

The sealing rib insert is embedded in the fixed mold, and the gasket is used to raise the height, and the gasket is set on the screw fixing the sealing rib insert. First process the sealing rib insert, including the sealing material surface, then take out the sealing rib insert and process the one-time product surface. In this way, the sealing rib insert and the disposable product have a perfect sharp corner.

The height of the sealing rib insert 3 is 2-5mm.

Referring to FIG. 3 , two pairs of sealing rib inserts 3 are embedded in the fixed mold 4 .

Referring to Fig. 1-Fig. 2, in each pair of sealing rib inserts, the heights of the two inserts are different.

The utility model has no flanging and rounded corners at the contact part between the sealing rib insert and the primary product, so that the boundary between the primary type and the secondary type on the surface of the injection molded product is clear; the discharge machining of EDM is reduced, and the processing cycle is shortened; the operation of adding a gasket is convenient .

Claims (4)

1. a fixed mold sealing rib insert block merging processing tooling structure is characterized in that: comprise fixed mold (4), sealing material rib insert (3), washer, bolt; Sealing material rib insert (3) inserts fixed In the mold, use a gasket to increase the height of 8-12mm; there is a screw hole at the bottom of the sealing rib insert (3), and the washer is set on the screw that fixes the sealing rib insert; the sealing surface of the sealing rib insert and the one-time product The sharp corner part that forms is higher than the upper end surface of fixed die (4). 2. The combined processing tooling structure of sealing rib inserts in fixed molds according to claim 1, characterized in that: the height of the sealing rib inserts (3) is 2-5mm. 3. The combined processing tooling structure of sealing rib inserts in the fixed mold according to claim 1, characterized in that two pairs of sealing rib inserts (3) are embedded in the fixed mold (4). 4. The combined processing tooling structure of sealing rib inserts in a fixed mold as claimed in claim 3, characterized in that: in each pair of sealing rib inserts, the heights of the two inserts are different.