The two-color molding means that two kinds of plastic materials are injected on the same injection molding machine and formed twice, but the product is only out of the mold once.  Two-color products have been widely used in power tools,  auto parts, home appliances, toys and other industries.  

Yozen Molding has a revolutionary injection molding technology, can be two, three colors and materials on an industrial product, let the product can meet the rich color demand, also can meet the diversification  functional requirements. 

Two-color injection mold is a product with two different materials or two different colors of the same material, generally divided into two categories.

One kind is mixed color double color injection mold, the injection molding machine of two alternating nozzle will be different color materials into one cavity, there is no clear boundary design and color of the products; Another kind is the double double color injection mold, the two two nozzle material has sent out a products have obvious boundary of double color products, after the first nozzle will materials into small cavity forming, Then the mold is opened but not ejected. After the mold is rotated 180 degrees, the second nozzle shoots another material into the large cavity that already has the first material. After the two materials are stuck together, the mold is opened and ejected for the second time, and Injection to produce a complete two-color product.

The injection molding machine of double layer and double color mold is a rotary injection molding machine, that is, the mold is fixed on a rotating plate, and the moving mold rotates 180 degrees every time. The two ejectors of this injection molding machine are arranged horizontally and up and down. In the process of involving this kind of mold, we should always pay attention to its rotation of 180 degrees to close the mold and open the mold smoothly.

1. Guide sleeve of mold embryo guide post must be symmetrical up and down, and symmetric before and after mold to ensure that the mold can be closed after 180 rotation, the thickness of the formwork must be consistent, and the thickness tolerance of the formwork should be controlled within 0.05mm.

2. Product spacing must be based on the spacing of injection molding machine nozzle.

3. Two independent ejector systems with spring resetting for thimble plate

4. The two rear parting surfaces must be the same.

5. The direction of water transport must be on the side of heaven and earth, and the inlet and outlet of each circulating water must be on the same surface, do not water in the sky, the water in the ground side, because the back mold to rotate 180 degrees, pay attention to the mold size should not exceed the injection molding machine. The height out of the tank. Otherwise, no water can be delivered.

6. The product injected for the first time should be placed on the non-operating side, because the product should be rotated 180 degrees for the second time after the first injection molding, is turning to the operation side, easy to take the product.

7. The side lock must be on the four sides of the center of the mold, and the front and back molds are symmetric, otherwise when the back mold rotates 180, it cannot match with the front mold.