CN201881526U - A runner structure of a two-color mold - Google Patents

Abstract

The utility model provides a double-colored mould's structure of watering, it has shortened the main length of watering to improve to watering, thereby make the time of moulding plastics and filling shorten by a wide margin, open and shut mould time and distance have also shortened, thereby reduced the shaping cycle of product, improved work efficiency, reduced manufacturing cost, simultaneously, double-colored mould still has simple structure, low in manufacturing cost's advantage, has very strong market competition.

Description

A runner structure of a two-color mold

technical field

The utility model relates to the field of mold manufacturing, in particular to a runner structure of a two-color mold.

Background technique

The two-color mold is a product made of two different materials or two materials of the same material and different colors. It is generally divided into two categories. One is a mixed-color two-color injection mold, that is, the two nozzles of the injection molding The material is injected into the same cavity to form a color product without a clear boundary; the other type is a double-layer two-color injection mold, that is, two types of two nozzles inject two materials successively to form a two-color product with a clear boundary.

As shown in Figure 1, the runner structure of the two-color mold in the prior art generally adopts the fine nozzle structure: the first color runner in the prior art shown in the figure is composed of the main runner 110 and the sub-runners 120, 130, 140 to form the entire runner system. As a result, the entire sprue system is very long, and the parting surface must be set on the 130 surface to take out the sprue waste.

Please continue to refer to Fig. 2, the second color sprue of prior art shown in Fig. 2: also comprise main sprue 150 and corresponding sub-runner 160,170,180 likewise, its structure and effect are as described above, here Not much narrative.

In this way, it is easy to cause too much runner waste, too long injection molding filling time, and too many mold opening times, which makes the product processing cycle longer and the price higher. At the same time, the formwork structure of this sprue structure is complicated, and its manufacturing cost is also relatively high.

Therefore, the prior art still needs to be improved and developed.

Utility model content

The purpose of the utility model is to provide a runner structure of a two-color mold. It solves the problems of long runners, many waste materials, long injection filling time and many times of mold opening in the two-color mold with fine nozzle structure in the prior art, which leads to long processing cycle and high price of the product.

In order to achieve the above object, the utility model has taken the following technical solutions:

A runner structure for a two-color mold, including:

The first color runner is used for the first injection of molding materials, the first color runner further includes a first main runner and a first sub-runner, the first main runner is set as a large gate structure, the The first runner is arranged on the rear mold, the first main runner is vertical and connected to the first runner;

The second color runner is used for the second injection molding material, the second color runner further includes a second main runner and a second sub-runner, the second main runner is configured as a large gate structure, and The second runner is arranged on the front mold, and the second main runner is vertical and connected to the second runner;

The main runner of the first color is sleeved in the main runner of the second color.

In the runner structure of the two-color mold, bushings are arranged in the first and second main runners.

In the runner structure of the two-color mold, the first and second runners adopt a balanced mechanism.

Compared with the prior art, the runner structure of the two-color mold provided by the utility model shortens the length of the main runner, and improves the sub-runner, so that the injection filling time is greatly shortened, and the mold opening and closing The time and distance are also shortened, thereby reducing the molding cycle of the product, improving work efficiency, and reducing manufacturing costs. At the same time, the two-color mold has the advantages of simple structure and low manufacturing cost, and has strong market competitiveness. .

Description of drawings

FIG. 1 is a schematic diagram of a first-color runner structure of a two-color mold in the prior art.

Fig. 2 is a schematic diagram of a second color runner structure of a two-color mold in the prior art.

Fig. 3 is a schematic diagram of the first color runner structure of the two-color mold according to the embodiment of the present invention.

Fig. 4 is a schematic diagram of the second color runner structure of the two-color mold according to the embodiment of the present invention.

Fig. 5 is a schematic diagram of the overall runner structure of the two-color mold according to the embodiment of the present invention.

Detailed ways

The utility model provides a runner structure of a two-color mold. In order to make the purpose, technical solution and effect of the utility model clearer and clearer, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Please refer to Figure 5, the runner structure of the two-color mold of the present invention includes a first-color runner and a second-color runner. Two colors, the first main runner 210 of the first color runner is set in the second main runner 310 of the second color runner, and the first sub-runner 220 of the first color runner is set On the rear mold, the second runner 320 of the second color runner is arranged on the front mold, so that during the second injection molding, the material can smoothly cross the first color runner and enter the cavity to complete the injection molding forming.

Further, in order to ensure the smooth progress of the double injection molding, the diameter and length of the first main runner 210 of the first color runner are generally set to be half of the second main runner 310 of the second color runner.

Please also refer to FIG. 3 , which is a schematic structural diagram of the first color runner. As shown in the figure, the first color runner includes a first main runner 210 and a first sub-runner 220 , and the first main runner 210 is vertical and connected to the first sub-runner 220 .

Specifically, the first main runner 210 is configured as a large sprue structure, its length is smaller than that of the existing main runner, and one end with a larger opening is connected to the first sub-runner 220, so that injection molding The filling time is shortened than before, which improves work efficiency. The first main runner 210 of the first color runner is set in the second main runner 310 of the second color runner, and the first sub-runner 220 is arranged on the rear mold, eliminating the need to remove the original runner. The fine nozzle structure is molded once, and its length is greatly reduced. Its advantage is: so that the product only needs to be parted once, instead of the original mold opening twice (originally, the gate must be broken through the parting surface, and then separated from the runner, and finally the product can be released), shortening the opening time. The time and distance of mold closing can effectively improve the production efficiency.

Similarly, referring to Fig. 4, the second color runner also includes a second main runner 310 and a second sub-runner 320, the structure principle of which is the same as that of the first color runner, and for the sake of brevity, there are not many details here. do the narrative.

Furthermore, since the first and second main runners are to be in contact with high-temperature materials first, and at the same time collide with the nozzle of the injection machine, they are easily damaged. Therefore, bushings are designed to be fixed in the first and second main runners. to the protective effect.

In order to ensure that the material can fill all the cavities at the same time with the same molding pressure and temperature during the molding process, so that products with the same size and good physical properties can be obtained, a balanced mechanism is used for the first and second runners: each runner A structure in which the shape, length and width dimensions, and fillet radii of the mouth and cavity are the same. All products are guaranteed to be of the same quality, with the same dimensional accuracy and physical properties.

In addition, the large ends of the first and second main runners and the corresponding connecting parts of the first and second sub-runners should adopt circular arc transitions to realize the smooth transition of injection molding materials from the main runner to the sub-runners, reducing the The pressure on the sprue wall is reduced.

The purpose of this utility model is to provide a runner structure of a two-color mold, which shortens the length of the main runner and the number of times of mold opening, and improves the sub-runner, so that the injection filling time is greatly shortened, and the opening and closing times are shortened. The mold clamping time and distance are also shortened, thereby reducing the molding cycle of the product, improving work efficiency, and reducing manufacturing costs. At the same time, the two-color mold also has the advantages of simple structure and low manufacturing cost, and has a strong market Competitiveness.

It can be understood that those skilled in the art can make equivalent replacements or changes according to the technical solution of the utility model and its utility model concept, and all these changes or replacements should belong to the appended claims of the utility model protected range.

Claims (3)

1. the running channel structure of a double-color mold is characterized in that, comprising:

Be used for the first look running channel of injected plastics material for the first time, the described first look running channel further comprises the first main running channel and first fen running channel, the described first main running channel is set to big gate structure, and described first minute running channel is arranged on the mould of back, and the described first main running channel is vertical and connect first fen running channel;

Be used for the second look running channel of injected plastics material for the second time, the described second look running channel further comprises the second main running channel and second fen running channel, the described second main running channel is set to big gate structure, and running channel was arranged on the front mould in described second minute, and the described second main running channel is vertical and connect second fen running channel;

The first look master running channel is placed in the described second look master running channel.

2. the running channel structure of double-color mold according to claim 1 is characterized in that, and is described

Be provided with lining in the first main running channel and the second main running channel.

3. the running channel structure of double-color mold according to claim 1 is characterized in that, and is described

First fen running channel and second fen running channel are balanced type mechanism.

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