CN208197429U - Bicolor injection mould - Google Patents

Abstract

A two-color injection mold relates to the technical field of injection molding and solves the technical problem of improving the operation efficiency of two-color injection molding. The mold includes a mold base, a turntable, and two fixed mold cores fixed on the mold base; two movable mold cores with the same structure are symmetrically fixed on the turntable, and the movable mold cavity of the movable mold core is provided with a Sliding inserts, the movable mold cavities of the two movable mold cores and the fixed mold cavities of the two fixed mold cores are facing one by one; the movable mold cores are provided with movable mold jacks that can slide back and forth, and the movable mold jacks The first thimble plate is fixed on the first thimble plate, the first thimble plate is fixed on the first thimble plate, the second thimble plate that can slide back and forth is provided on the movable mold core, the second thimble plate is fixed on the second thimble plate, the second thimble and Inserts are fixed. The mold provided by the utility model is suitable for two-color injection molding products.

Description

Two-color injection mold

technical field

The utility model relates to an injection molding processing technology, in particular to a technology of a two-color injection mold.

Background technique

At present, the use of injection molded parts is becoming more and more widely. Some injection molded parts need to use two-color injection molds during manufacture. These injection molds need to reserve space for secondary feeding, but due to the limitation of mold structure, it can only be used in the front mold. Partially reserve space for secondary feeding; if it is necessary to reserve space for secondary feeding in the rear mold part, the current structure is difficult to achieve. At present, the injection molds with such requirements are produced in this way: when the one-color product is injection-molded, the finished product in the mold cavity is ejected, and the finished product is manually placed on another set of molds for secondary molding, so that the operation of the injection molding operation less efficient.

Utility model content

Aiming at the above-mentioned defects in the prior art, the technical problem to be solved by the utility model is to provide a two-color injection mold which can improve the efficiency of the two-color injection molding operation.

In order to solve the above technical problems, a two-color injection mold provided by the utility model is characterized in that it includes a mold base, a turntable, and two fixed mold cores fixed on the mold base, one of which is the first fixed mold core. The fixed mold core, the other fixed mold core is the second fixed mold core, a fixed mold cavity is formed on each fixed mold core, and each fixed mold core is provided with a Fixed mold thimble ejected forward;

Two movable mold cores with the same structure are symmetrically fixed on the turntable, and a movable mold cavity is formed on the movable mold core, and an insert capable of sliding back and forth is arranged in the movable mold cavity, and the movable mold cavity of the two movable mold cores is connected to the The fixed mold cavities of the two fixed mold cores are facing each other;

The movable mold core is provided with a movable mold ejector column capable of sliding back and forth, a first ejector plate is fixed on the movable mold ejector column, a first ejector pin is fixed on the first ejector plate, and a movable mold cavity is provided for the first ejector pin to enter and exit. the thimble hole;

A second thimble plate capable of sliding back and forth is provided on the movable mold core, a second thimble is fixed on the second thimble plate, and the second thimble is fixedly connected with the insert.

Further, the movable mold core is provided with a backing plate capable of sliding left and right, and a side sliding oil cylinder for driving the backing plate to slide left and right, the backing plate is staggered left and right with the second ejector plate, and the backing plate can slide to the The position where the second ejector plate overlaps left and right.

The two-color injection mold provided by the utility model uses the turntable to drive the movable mold and the semi-finished product of the first color to rotate 180 degrees with the fixed mold of the second color, and uses the insert to adjust the cavity of the second color, which can improve the efficiency of the two-color injection molding operation .

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the left rear perspective of the two-color injection mold of the utility model embodiment;

Fig. 2 is a top cut-away view of the first fixed core and the movable core in the two-color injection mold of the embodiment of the present invention after they are mold-closed.

Detailed ways

The embodiments of the present utility model are described in further detail below in conjunction with the accompanying drawings, but the present embodiments are not intended to limit the present utility model. All similar structures and similar changes of the utility model should be included in the protection of the utility model. Scope, the comma in the utility model all represents and the relation.

As shown in Figure 1-Figure 2, a two-color injection mold provided by the embodiment of the utility model is characterized in that it includes a mold base (not shown in the figure), a turntable 3, and two fixed fixed on the mold base Mold core 11,12, wherein a fixed mold core is the first fixed mold core 11, and another fixed mold core is the second fixed mold core 12, and each fixed mold core is all formed with a fixed mold cavity, and in every fixed mold core Each fixed mold core is provided with a fixed mold thimble 10 for pushing out the injection molded product in the fixed mold cavity forward;

Two movable mold cores 2 with the same structure are symmetrically fixed on the turntable 3, a movable mold cavity is formed on the movable mold core 2, and an insert 9 capable of sliding back and forth is arranged in the movable mold cavity, and the two movable mold cores 2 The movable mold cavity of the two fixed mold cores 11, 12 is opposite to each other;

The movable mold core 2 is provided with a movable mold ejector column 6 capable of sliding back and forth, a first ejector plate 71 is fixed on the movable mold ejector column 6, a first ejector pin 81 is fixed on the first ejector plate 71, and the movable mold cavity is opened. There is a thimble hole for the first thimble to enter and exit;

The movable mold core 2 is provided with a second thimble plate 72 capable of sliding back and forth, a second thimble 82 is fixed on the second thimble plate 72, and the second thimble 82 is fixedly connected to the insert 9;

The movable mold core 2 is provided with a backing plate 5 capable of sliding left and right, and a side sliding oil cylinder 4 for driving the backing plate 5 to slide left and right. The backing plate 5 and the second ejector pin plate 72 are staggered left and right, and the backing plate 5 It can slide to a position overlapping with the second ejector plate 72 left and right.

The utility model embodiment is installed on the injection molding machine and is suitable for two-color injection molding products. Its working method is as follows:

When in use, fix the mold base on the fixed part of the mold opening and closing system of the injection molding machine, and install the rotating shaft of the turntable on the movable part of the mold opening and closing system of the injection molding machine;

In the initial state, the backing plate is in a position staggered left and right with the second ejector plate. At this time, the second ejector plate moves forward to the front dead center, and the insert also moves forward to the front dead center position. The second ejector plate and the backing plate Front and rear alignment; Let the moving mold core facing the first fixed mold core be the first moving mold core, and the moving mold core facing the second fixed mold core be the second moving mold core;

At this time, the first color injection molding starts. The fixed mold cavity of the first fixed mold core and the movable mold cavity of the first movable mold core form the first color molding cavity. At this time, the first color molding cavity is injected into the first color molding cavity. After the first color injection melt is cooled and formed, the mold opening and closing system of the injection molding machine drives the turntable and the movable mold core to move the mold forward, so that the first movable mold core is separated from the first fixed mold core, and the mold is fixed at the same time The thimble also ejects the semi-finished product of the first color injection from the cavity of the fixed mold, and then the turntable rotates 180 degrees. The mold core rotates to the position facing the first fixed mold core;

Then the mold opening and closing system of the injection molding machine drives the turntable and the movable mold core to move backward to close the mold, so that the first movable mold core and the second fixed mold core are aligned (at the same time, the second movable mold core is also aligned with the first fixed mold core), Then the ejector column of the movable mold drives the first ejector plate to move backward, thereby driving the first ejector pin to move back to the rear dead point, thereby ejecting the semi-finished product of the first color injection molding from the movable mold cavity, and then the second ejector plate drives the second ejector pin to the rear At this time, the second thimble plate and the backing plate are staggered back and forth. At this time, the side slip cylinder drives the backing plate to slide to the position overlapping with the second thimble plate left and right, and then the second thimble plate The plate drives the insert forward through the second thimble until the front plate of the second thimble plate touches the backing plate, and the second color cavity is adjusted through the insert. At this time, the second color injection can be started, and the second fixed The fixed mold cavity of the mold core becomes the second color molding cavity. At this time, the second color injection molten liquid is injected into the second color molding cavity. After the second color injection molten liquid is cooled and formed, the injection molding machine opens and closes the mold system Drive the turntable and the movable mold core to move the mold forward, so that the first movable mold core is separated from the second fixed mold core. At the same time, the fixed mold thimble also ejects the two-color injection molded product from the fixed mold cavity, and then the turntable rotates 180 degrees. Once the moving mold core returns to the position facing the first fixed mold core, the injection molding of the two-color injection molding product is completed;

After removing the two-color injection molding product, the second ejector plate moves backward to the rear dead center, and then the side-sliding oil cylinder drives the backing plate to slide to a position staggered left and right with the second ejector plate, and then the second ejector plate drives the insert forward through the second ejector pin. Move to the front dead point, and then the mold opening and closing system of the injection molding machine drives the turntable and the movable mold core to move backward to close the mold, so that the first movable mold core is matched with the first fixed mold core (at the same time, the second movable mold core is also aligned with the second fixed mold core) The mold core is matched), and the next two-color injection molding operation can be started.

Claims (2)

1. A two-color injection mold is characterized in that: it comprises a mold base, a rotating disk, and two fixed mold cores fixed on the mold base, wherein a fixed mold core is the first fixed mold core, and another fixed mold core is The second fixed mold core, a fixed mold cavity is formed on each fixed mold core, and a fixed mold thimble for ejecting the injection molded product in the fixed mold cavity forward is provided on each fixed mold core; Two movable mold cores with the same structure are symmetrically fixed on the turntable, and a movable mold cavity is formed on the movable mold core, and an insert capable of sliding back and forth is arranged in the movable mold cavity, and the movable mold cavity of the two movable mold cores is connected to the The fixed mold cavities of the two fixed mold cores are facing each other; The movable mold core is provided with a movable mold ejector column capable of sliding back and forth, a first ejector plate is fixed on the movable mold ejector column, a first ejector pin is fixed on the first ejector plate, and a movable mold cavity is provided for the first ejector pin to enter and exit. the thimble hole; A second thimble plate capable of sliding back and forth is provided on the movable mold core, a second thimble is fixed on the second thimble plate, and the second thimble is fixedly connected with the insert. 2. The two-color injection mold according to claim 1, characterized in that: the movable mold core is provided with a backing plate capable of sliding left and right, and a side-sliding oil cylinder for driving the backing plate to slide left and right, and the backing plate and The second ejector plate is staggered left and right, and the backing plate can slide to a position overlapping with the second ejector plate left and right.