CN221233083U - Corner forming mechanism and mold for refrigerator door liner plastic suction - Google Patents

Abstract

The utility model provides a corner forming mechanism and a die for plastic uptake of a refrigerator door liner, wherein the corner forming mechanism comprises a die seat, a refrigerator door liner forming plate is arranged in the die seat, and side dies are arranged on four sides of the refrigerator door liner forming plate and are used for forming inverted edges on four sides of the refrigerator door liner; corner molds connected between adjacent side molds are arranged at four corners of the refrigerator door liner forming plate, a pneumatic core pulling mechanism is arranged on one side of each corner mold, each pneumatic core pulling mechanism comprises a core pulling block and a cylinder capable of pushing the core pulling block to move towards the corner mold, and the corner mold and the core pulling block can form a back-off edge forming space when in contact; the die is provided with the corner forming mechanism. The utility model can realize the integral molding of the four-corner back-off edges and the four-side back-off edges of the refrigerator door liner during plastic suction, and can also facilitate demoulding after molding.

Description

Corner forming mechanism and mold for refrigerator door liner plastic suction

Technical Field

The utility model belongs to the technical field of dies, and particularly relates to a corner forming mechanism for refrigerator door liner plastic uptake and a die.

Background

As shown in fig. 1, the molding of the refrigerator door liner is completed by means of a refrigerator door liner mold 1, in order to ensure the air tightness of the refrigerator door liner, as shown in fig. 2, a door seal strip 3 needs to be arranged around the periphery of the refrigerator door liner 2, and the refrigerator door liner 2 forms a back-off edge 4 capable of buckling a labyrinth claw 31 on the door seal strip 3 through a plastic suction process, so that the door seal strip 3 can be effectively prevented from falling off.

However, since the reverse buckling edges 4 on four corners of the refrigerator door liner 2 are just positioned in the demolding direction, demolding cannot be performed under normal conditions, the refrigerator door liner plastic mold in the prior art can only generally form the reverse buckling edges 4 on four sides of the refrigerator door liner 2, and the reverse buckling edges 4 on four corners need to be produced and assembled separately, so that time and labor are wasted, and the air tightness of the assembling structure of the refrigerator door liner is difficult to ensure.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art and provides a mechanism capable of realizing the formation and demoulding of the back-off edges at the four corners of the refrigerator door liner.

The utility model also provides a die using the corner forming mechanism for the refrigerator door liner plastic suction.

The first aspect of the utility model provides a corner forming mechanism for refrigerator door liner plastic uptake, which comprises a die seat, wherein a refrigerator door liner forming plate is arranged in the die seat, and four sides of the refrigerator door liner forming plate are provided with side dies for forming inverted edges of four sides of the refrigerator door liner; corner molds connected between adjacent side molds are arranged at four corners of the refrigerator door liner forming plate, a pneumatic core pulling mechanism is arranged on one side of each corner mold, each pneumatic core pulling mechanism comprises a core pulling block and a cylinder capable of pushing the core pulling block to move towards the corner mold, and the corner molds and the core pulling blocks can form a back-off edge forming space when in contact.

A second aspect of the present utility model provides a mold equipped with the above corner molding mechanism for refrigerator door liner suction molding.

The corner forming mechanism for the refrigerator door liner plastic suction provided by the utility model can realize the integral forming of the four-corner back-off edges and the four-side back-off edges of the refrigerator door liner during plastic suction, can be conveniently demoulded after forming, and has the advantages of simple structure and strong practicability.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

FIG. 1 is a schematic diagram of a refrigerator door liner plastic mold in the background art;

Fig. 2 is a schematic diagram (section) of an assembly structure of a refrigerator door liner and a door seal in the background art;

Fig. 3 is a schematic structural view of a corner forming mechanism for door liner suction molding of a refrigerator in the present embodiment;

Fig. 4 is a schematic diagram of an installation structure of the pneumatic core pulling mechanism in the present embodiment.

Detailed Description

Referring to fig. 3, the corner forming mechanism for plastic suction of a refrigerator door liner provided in this embodiment includes a mold seat 5, a refrigerator door liner forming plate 51 is provided in the mold seat 5, four sides of the refrigerator door liner forming plate 51 are provided with side molds 52 for forming a reverse buckling edge 4 on four sides of the refrigerator door liner, in order to solve the technical problem in the background art, in the technical scheme of this embodiment, corner molds 53 connected between adjacent side molds 52 are provided at four corners of the refrigerator door liner forming plate 51, one side of each corner mold 53 is provided with a pneumatic core pulling mechanism 6, and in combination with fig. 4, the pneumatic core pulling mechanism 6 includes a core pulling block 61 and a cylinder 62 capable of pushing the core pulling block 61 to move towards the corner mold 53, and the corner molds 53 and the core pulling block 61 can form a reverse buckling edge forming space 7 when in contact.

When in use, when the piston rod of the air cylinder 62 extends out, the core pulling block 61 is driven to move towards the corner die 53, the corner die 53 is matched with the core pulling block 61, and the inverted buckle edge forming space 7 is formed, so that the plastic suction forming of the refrigerator door liner 2 (comprising four edges and four corners) can be directly carried out; when the piston rod of the cylinder 62 is contracted, the core-pulling block 61 is separated from the corner mold 53, and the separated core-pulling block 61 does not obstruct the refrigerator door liner 2, so that the integral demolding of the refrigerator door liner 2 can be completed.

In this embodiment, the pneumatic core pulling mechanism 6 is positioned on the bottom surface of the refrigerator door liner molding plate 51 through the fixing seat 8. The method aims at ensuring accurate positioning during working, facilitating linkage control and ensuring the qualification rate of batch products.

In this embodiment, the back-off edge forming space 7 is located between the corner mold 53 and the upper portion of the core block 61. The purpose is that be convenient for with the side form 52 matching, make the integration shaping that can be better and drawing of patterns of the back-off limit 4 of refrigerator door courage 2 four sides and the back-off limit 4 of four corners department.

The embodiment also provides a die provided with the corner forming mechanism for refrigerator door liner plastic suction.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (4)

1. A corner forming mechanism for refrigerator door courage plastic uptake, includes the mould seat, is equipped with refrigerator door courage shaping board in the mould seat, and the four sides of refrigerator door courage shaping board are equipped with the side mould for form the four sides of refrigerator door courage back-off limit, its characterized in that: corner molds connected between adjacent side molds are arranged at four corners of the refrigerator door liner forming plate, a pneumatic core pulling mechanism is arranged on one side of each corner mold, each pneumatic core pulling mechanism comprises a core pulling block and a cylinder capable of pushing the core pulling block to move towards the corner mold, and the corner molds and the core pulling blocks can form a back-off edge forming space when in contact.

2. The corner forming mechanism for refrigerator door liner suction molding of claim 1, wherein: the pneumatic core pulling mechanism is positioned on the bottom surface of the refrigerator door liner forming plate through the fixing seat.

3. The corner forming mechanism for refrigerator door liner suction molding according to claim 1 or 2, wherein: the back-off edge forming space is positioned between the corner die and the upper part of the core pulling block.

4. A mold, characterized in that: a corner forming mechanism for refrigerator door liner suction as claimed in any one of claims 1 to 3.