WO2024146106A1 - Combined insert, and forming method of same matched with water-soluble material - Google Patents

Abstract

A combined insert, the combined insert comprising an insert and a connecting block, wherein the functional part of the insert comprises a fixing part and a handle part: the fixing part is provided with a mold hole, a clamping recess and a jig fixing hole, wherein the mold hole is used for extending a pin into the mold; the handle part is formed by extending the fixing part in the vertical direction and a water-soluble material can be used to wrap on the periphery of the handle part; a connecting port protruding in the horizontal direction is formed in the side surface of the joint position of the fixing part and the handle part; the connecting block is connected between the fixing part and the handle part by means of connecting port, and the connecting block is arranged to be matched with other combined inserts. Also provided in the present application is a forming method of the combined insert matched with a water-soluble material.

Description

Combined insert and molding method thereof with water-soluble material

This disclosure claims the priority of the Chinese patent application number 202310011386.5 filed with the Chinese Patent Office on January 5, 2023. The entire contents of the above application are incorporated by reference into this application.

Technical Field

The present application relates to the field of injection molding, for example, to a combined injector and a molding method thereof in combination with a water-soluble material.

Background technique

In order to meet the needs of entertainment or daily life in today's society, plastic products have become a very important part of our lives, and in order to meet the needs of different usage scenarios, different plastic products have different characteristics and shapes; however, there are currently the following technical problems in the production of plastic products such as handles.

When plastic handle products in the related art are being molded, if there are undercuts or small columns inside in the demolding direction, and the angle between them and the slider exit direction is 90°, the slider will not be able to exit or demold using the current general injection molding solution in the industry. Even if it can be demolded, its appearance cannot meet the production quality requirements.

Summary of the invention

The present application provides a combined insert and a molding method thereof in combination with a water-soluble material, so as to solve the problems of the slider being unable to be withdrawn or demoulded in the current molding scheme.

The present application provides a combined insert, the combined insert comprising an insert and a connecting block, the functional components of the insert comprising a fixing portion and a handle portion;

The upper end of the fixing part is provided with a mold hole, and the mold hole is used for the pin in the mold to extend therein;

The handle portion is formed by extending the fixing portion in a vertical direction, and a water-soluble material may be used to wrap the outer periphery of the handle portion;

A connecting opening protruding in the horizontal direction is provided on the side of the connection between the fixing portion and the handle portion, and the connecting opening enables the connecting block to be fixedly arranged beside the insert;

A slot is provided between the fixing portion and the side opening of the connection port, and the slot is configured to be fixed to the mold;

The fixing portion extends to the side opening of the connection port and is further provided with a jig fixing hole between the mold hole and the card slot, and the jig fixing hole is configured to be clamped and fixed with the jig, so that the combined insert can be separated from the water-soluble material and the molded product by the jig after the molding is completed;

The connecting block is connected and arranged between the handle portion and the fixing portion through the connecting port;

The connecting block is configured to cooperate with other combined inserts;

The present application also provides a molding method of a combined insert and a water-soluble material, comprising:

According to product requirements, required holes and grooves are opened on the combined inlet and the connecting block;

After the insert and the connecting block are connected, they are put into the mold and fixed with the mold using the slot inside the combined insert;

Use water-soluble materials for injection molding, and the water-soluble materials are wrapped around the combined insert;

Put the combined insert wrapped with water-soluble material into the final mold, and the slot of the combined insert and the slot of the final mold are matched to limit the position;

Injection molding using the required material;

Use a jig to separate the combined insert from the water-soluble material and the molded product;

The molded product is placed in water to dissolve the water-soluble materials to obtain the final desired molded product.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of the combined insert of the present application when it is not combined;

FIG2 is a schematic diagram of the structure of the combined type of the present application when the subassembly is combined;

FIG3 is a schematic diagram of the structure of the combined insert of the present application when combined with a water-soluble material;

FIG4 is a schematic diagram of the structure of the combined insert of the present application and another combined insert of mirror-symmetrical design when they are not combined;

FIG5 is a schematic diagram of the structure of the combined insert of the present application combined with another combined insert of mirror-symmetrical design;

FIG. 6 is a step diagram of a molding method for combining a combination insert and a water-soluble material according to the present application.

Reference numerals:
100, combined insert; 110, insert; 120, connecting block; 111, fixing portion; 112, mold hole;
116, handle portion; 113, connection port; 114, slot; 115, fixture fixing hole; 100B, symmetrically arranged combined inserts; 120B, symmetrically arranged connection blocks; 110B, symmetrically arranged inserts; 113B, symmetrically arranged connection ports; 1A, water-soluble material.

Detailed ways

In order to illustrate the technical means adopted in this application and their effects, the following description is given in conjunction with the drawings of this application.

Please refer to FIG. 1 . The present application provides a combined plunger 100 . The combined plunger 100 includes an plunger 110 and a connecting block 120 . The plunger 110 includes two parts according to their functional distinction: a fixing part 111 and a handle part 116 .

The upper end of the fixing portion 111 is provided with a mold hole 112, and the mold hole 112 is used for the pin in the mold to extend therein;

Please refer to FIG. 1 and FIG. 2 , the insert 110 is provided with a connecting opening 113 protruding in the horizontal direction at the side of the connecting portion 111 and the handle portion 116 , and the connecting opening 113 enables the connecting block 120 to be fixedly arranged beside the insert 110 ;

A slot 114 is provided between the fixing portion 111 and the side opening of the connecting port 113, and the slot 114 is configured to be fixed to the mold;

The fixing portion 111 extends to the side opening of the connection port 113 and is provided with a jig fixing hole 115 between the mold hole 112 and the card slot 114. The jig fixing hole 115 is configured to be clamped and fixed to a jig, so that the combined insert 100 can be separated from the water-soluble material 1A and the molded product by a jig after molding is completed.

Please refer to FIG. 3 , the handle portion 116 is formed by extending the fixing portion 111 in a vertical direction, and a water-soluble material 1A may be used to wrap around the outer periphery of the handle portion 116 ;

The connection block 120 is connected between the handle portion 116 and the fixing portion 111 through the connection port 113;

The connecting block 120 is configured to cooperate with other combined inserts 100;

Please refer to Figures 4 and 5. In one embodiment, the connecting block 120 can be fixedly arranged with the symmetrically arranged connecting blocks 120B in another group of symmetrically arranged combination inserts 100B. The symmetrically arranged connecting blocks 120B are then connected to the symmetrically arranged inserts 110B in the symmetrically arranged combination inserts 100B through the symmetrically arranged connecting ports 113B in the symmetrically arranged combination inserts 100B, so as to realize a single-shot molding of a two-handled product.

Optionally, the fixing portion 111 , the handle portion 116 and the connecting block 120 may be provided with holes and grooves according to product requirements.

Optionally, the farther the handle portion 116 is from the fixing portion 111 , the smaller its volume is.

The fixing portion 111 and the connecting block 120 can also provide the water-soluble material 1A wrapped around the periphery;

The material of the combined insert 100 can be metal, plastic or a mixture of metal and plastic;

In one embodiment, the combined insert 100 is made of metal.

The present application also provides a molding method of the combined insert 100 and the water-soluble material, which comprises the following steps:

S1: according to product requirements, required holes and grooves are opened in the insert 110 and the connecting block 120 of the combined insert 100;

S2: After the insert 110 and the connecting block 120 are assembled and connected, they are placed into the mold, and the slot 114 on the inner side of the assembled insert 100 is used to engage and fix the mold;

S3: using the water-soluble material 1A for injection molding, the water-soluble material 1A is wrapped around the combined insert 100;

S4: Put the combined insert 100 wrapped with the water-soluble material 1A into the final mold, and the slot 114 of the combined insert 100 cooperates with the slot of the final mold to limit the position;

S5: Injection molding using the required material;

S6: Using a jig to separate the combined insert 100 from the water-soluble material 1A and the molded product;

S7: Put the molded product into water to dissolve the water-soluble material 1A to obtain the final desired molded product.

Optionally, the water-soluble material 1A in step S3 is a water-soluble plastic.

Optionally, the shape of the product after the water-soluble material 1A is molded in step S3 is the same as the inner cavity shape of the molded product.

It can be understood that by utilizing a combination insert and a molding method in combination with a water-soluble material provided in the present application, it is possible to realize injection molding production of molded products with an undercut structure inside, solve problems such as the inability to withdraw the slider or to demold in the current molding scheme, significantly improve the yield of molded products, and reduce the loss and cost of molding materials.

Claims (8)

1. A combined plunger (100), the combined plunger (100) comprising an plunger (110) and a connecting block (120), the functional components of the plunger (110) comprising a fixing portion (111) and a handle portion (116);

   The handle portion (116) is formed by extending the fixing portion (111) in a vertical direction;

   The upper end of the fixing portion (111) is provided with a mold hole (112);

   A connecting opening (113) protruding in the horizontal direction is provided on the side surface of the connection between the fixing portion (111) and the handle portion (116);

   A clamping groove (114) is provided between the fixing portion (111) and the side opening of the connecting port (113);

   The fixing portion (111) extends to a side opening of the connecting port (113), and a fixture fixing hole (115) is provided between the mold hole (112) and the clamping groove (114);

   The connection block (120) is connected and arranged between the handle portion (116) and the fixing portion (111) through the connection port (113).
2. According to the combination insert (100) of claim 1, wherein the connection block (120) can be fixedly arranged in cooperation with a symmetrically arranged connection block (120B) in another group of symmetrically arranged combination inserts (100B), and the symmetrically arranged connection block (120B) is connected to a symmetrically arranged insert (110B) in the symmetrically arranged combination insert (100B) via a symmetrically arranged connection port (113B) in the symmetrically arranged combination insert (100B), thereby realizing a single-shot molding of a two-handle type product.
3. According to the combined plunger (100) of claim 2, wherein the fixing portion (111), the handle portion (116) and the connecting block (120) can be provided with holes and grooves according to product requirements.
4. The combined plunger (100) according to claim 1, wherein the farther the handle portion (116) is from the fixing portion (111), the smaller its volume is.
5. The combined plunger (100) according to claim 1, wherein the combined plunger (100) is made of metal, plastic or a mixture of metal and plastic.
6. A molding method of a combined insert and a water-soluble material, comprising:

   According to product requirements, required holes and grooves are provided on the insert (110) and the connecting block (120) of the combined insert (100);

   The insert (110) and the connecting block (120) are assembled and connected and then placed into a mold, and the combined insert (100) is fixed to the mold by means of the clamping groove (114) inside the combined insert (100);

   Using a water-soluble material (1A) for injection molding, the water-soluble material (1A) is wrapped around the assembled insert (100);

   The combined insert (100) wrapped with the water-soluble material (1A) is placed into the final mold, and the slot (114) of the combined insert (100) cooperates with the slot of the final mold to limit the position;

   Injection molding using the required material;

   Using a jig to separate the combined insert (100) from the water-soluble material (1A) and the molded product;

   The molded product is placed in water to dissolve the water-soluble material (1A) to obtain the final desired molded product.
7. According to the molding method of the combined insert and the water-soluble material as described in claim 6, the water-soluble material (1A) is a water-soluble plastic.
8. According to the molding method of the combined insert and the water-soluble material according to claim 6, the shape of the product after the water-soluble material (1A) is molded is the same as the inner cavity shape of the molded product.