CN107775875B

CN107775875B - Forming structure of double-color product

Info

Publication number: CN107775875B
Application number: CN201610710077.7A
Authority: CN
Inventors: 王双喜
Original assignee: Suzhou Mitac Precision Technology Co Ltd
Current assignee: Suzhou Mitac Precision Technology Co Ltd
Priority date: 2016-08-24
Filing date: 2016-08-24
Publication date: 2020-04-10
Anticipated expiration: 2036-08-24
Also published as: CN107775875A

Abstract

The invention discloses a forming structure of a bicolor product, which comprises: the core insert is arranged in a core plate, an ejector plate, an insert pin and a small return pin are arranged in the core insert, the ejector plate has a movable distance in the core insert, a strong spring is arranged below the ejector plate, one end of the strong spring abuts against the core plate, the other end of the strong spring abuts against the ejector plate, one end of the insert pin is fixed in the ejector plate, the other end of the insert pin is provided with a hollow part for forming an injection product, one end of the small return pin is fixed in the ejector plate, and the other end of the small return pin extends out of the core insert; the injection cavity insert is matched with the core insert and the insert pin to form an injection product, and the position of the injection cavity insert corresponding to the small return pin is kept away; and the two injection cavity inserts are matched with the core inserts and the insert pins to form two injection products, and the two injection cavity inserts and the small return pins are broken. Thereby forming a two-shot product partially embedded in the one-shot product.

Description

Forming structure of double-color product

[ technical field ] A method for producing a semiconductor device

The invention relates to a forming structure, in particular to a forming structure of a double-color product.

[ background of the invention ]

In the production of molds, the molding of products with two-color molds is often encountered. The double-color mold is a double-color mold which is formed by injecting two plastic materials on the same injection molding machine in two times, but the product is only subjected to mold stripping once. Two-color molds usually need two sets of molds to complete together, and a special two-color injection molding machine is needed. The general working process is as follows: the first injection raw material is injected into the first-time forming die through the material pipe to form a single-injection finished product, the single-injection finished product is left in the male die after periodic die opening, the male die part of the forming machine rotates to a second injection position to be closed, the second injection raw material is injected into the second-time forming die through the material pipe to form a double-color product, and then the product is ejected out of the die through the periodic die opening and the ejection mechanism. In the double-color mold, the male mold part needs to be completely the same, and the rotary exchange of the forming molds can be realized twice.

Referring to fig. 1, fig. 1 is a schematic diagram of a product structure. As shown in the figure, the two-color product 10 needs to be molded by a two-color mold, and the two-color product 10 includes a one-shot product and a two-shot product. However, the existing two-color mold cannot mold a two-shot product with a part embedded in the one-shot product.

In view of the above, it is necessary to develop a molding structure of a two-color product to solve the above problems.

[ summary of the invention ]

Therefore, the invention aims to provide a molding structure of a double-color product, which solves the problem that the existing double-color mold cannot mold a double-shot product partially embedded into a single-shot product.

In order to achieve the above object, the present invention provides a molding structure of a two-color product, the two-color product includes a first injection product and a second injection product, the first injection product has an insertion portion for inserting the first injection product, the first injection product has a void portion, the molding structure of the two-color product includes:

the core insert is arranged in a core plate, an ejector plate, an insert pin and a small return pin are arranged in the core insert, the ejector plate has a movable distance in the core insert, a strong spring is arranged below the ejector plate, one end of the strong spring abuts against the core plate, the other end of the strong spring abuts against the ejector plate, one end of the insert pin is fixed in the ejector plate, the other end of the insert pin is provided with a hollow part for forming the first-shot product, one end of the small return pin is fixed in the ejector plate, and the other end of the small return pin extends out of the core insert;

the injection cavity insert is arranged opposite to the male cavity insert during injection, the injection cavity insert, the male cavity insert and the insert pin are matched to form the injection product, and the injection cavity insert is kept away from the small return pin;

and the two injection female die cores are arranged opposite to the male die core during two injection, the two injection female die cores, the male die core and the insert pin are matched to form the two injection product, and the two injection female die cores and the small return pin are broken.

Optionally, the ejector plate comprises an upper ejector plate and a lower ejector plate, and the insert pin and one end of the small return pin are clamped and fixed between the upper ejector plate and the lower ejector plate.

Compared with the prior art, in the forming structure of the double-color product, when the injection molding is carried out, the injection cavity insert is kept away from the small return pin, so that the strong spring is released, and the insert pin forms the hollow part of the injection product; during the second injection molding, as the second injection cavity insert and the small return pin are broken, the strong spring is compressed to drive the ejector plate to move downwards, and the insert pin is separated from the hollow part of the first injection product downwards, so that the second injection generates the embedded part of the second injection product. Therefore, by adopting the molding structure of the double-color product, a double-shot product with a part embedded into the single-shot product can be molded.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of a product.

Fig. 2 is a schematic structural view of an injection mold of the forming structure of the two-color product according to the present invention.

Fig. 3 is a partially enlarged view of a molding structure of a two-color product according to the present invention.

FIG. 4 is a partially enlarged view of a shot-small return pin of the forming structure of the dual-color product of the present invention.

Fig. 5 is a schematic structural view of a two-shot mold of a molding structure of a two-color product according to the present invention.

Fig. 6 is a partially enlarged schematic view of a two-shot insert pin of the forming structure of the two-color product according to the present invention.

Fig. 7 is a partially enlarged schematic view of a two-shot small return pin of the forming structure of the two-color product according to the present invention.

[ detailed description ] embodiments

Referring to fig. 2 to 7, fig. 2 is a schematic diagram of a one-shot mold structure of a molding structure of a two-color product according to the present invention, fig. 3 is a schematic diagram of a one-shot insert pin of a molding structure of a two-color product according to the present invention, fig. 4 is a schematic diagram of a small-shot return pin of a molding structure of a two-color product according to the present invention, fig. 5 is a schematic diagram of a two-shot mold structure of a molding structure of a two-color product according to the present invention, fig. 6 is a schematic diagram of a small-shot insert pin of a molding structure of a two-color product according to the present invention, and fig. 7 is a schematic diagram of a small-shot return pin of a molding structure of a two-color product according to the present.

In order to achieve the above object, the present invention provides a molding structure of a dual-color product, in which the dual-color product 10 includes a first injection product 11 and a second injection product 12, the second injection product 12 has an embedded portion embedded in the first injection product 11, the first injection product 11 correspondingly has a hollow portion (please refer to fig. 1), the molding structure of the dual-color product includes:

the core insert 101 is arranged in a core plate 100, an ejector plate 102, an insert pin 103 and a small return pin 104 are arranged in the core insert 101, the ejector plate 102 has a moving distance in the core insert 101, a strong spring 105 is arranged below the ejector plate 102, one end of the strong spring 105 abuts against the core plate 100, the other end of the strong spring abuts against the ejector plate 102, one end of the insert pin 103 is fixed in the ejector plate 102, the other end of the insert pin has a vacant part for molding the first shot product 11, one end of the small return pin 104 is fixed in the ejector plate 102, and the other end of the small return pin extends out of the core insert 101;

an injection cavity insert 106, which is set opposite to the core insert 101 during injection, the injection cavity insert 106, the core insert 101 and the insert pin 103 are matched to form the injection product 11, and the position of the injection cavity insert 106 corresponding to the small return pin 104 is kept away;

the two-shot cavity insert 107 is arranged opposite to the core insert 101 during two-shot, the two-shot cavity insert 107, the core insert 101 and the insert pin 103 are matched to form the two-shot product 12, and the two-shot cavity insert 107 and the small return pin 104 are broken.

The ejector plate 102 includes an upper ejector plate and a lower ejector plate, and the insert pin 103 and one end of the small return pin 104 are clamped and fixed between the upper ejector plate and the lower ejector plate.

Referring to fig. 4, during an injection molding process, since the position of the injection cavity insert 106 corresponding to the small return pin 104 is kept away, the strong spring 105 is released, and the insert pin 103 forms a vacant portion of the injection product 11 (see fig. 2-4); referring to fig. 7, during the second shot molding, since the second shot cavity insert 107 and the small return pin 104 are broken, the strong spring 105 is compressed to drive the ejector plate 102 to move downward, and the insert pin 103 is separated from the hollow portion of the first shot product 11 downward, so that the second shot produces the embedded portion of the second shot product 12 (see fig. 5-7). Therefore, the two-shot product 12 partially embedded in the one-shot product 11 can be molded by adopting the molding structure of the two-shot product.

It should be noted that the present invention is not limited to the above embodiments, and any simple modification, equivalent change and modification made to the above embodiments by those skilled in the art based on the technical solution of the present invention fall within the protection scope of the present invention.

Claims

1. The utility model provides a forming structure of double-colored product, this double-colored product include one penetrate the product and penetrate the product two times, and this two penetrate the product has the embedding portion that this one penetrated the product, and this one penetrates the product and corresponds to have vacant portion, and its characterized in that, this forming structure of double-colored product includes:

2. The molding structure of a bi-color product according to claim 1, wherein the ejector plate comprises an upper ejector plate and a lower ejector plate, and the insert pin and the small return pin are clamped and fixed at one end between the upper ejector plate and the lower ejector plate.