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Two color injection molding principle:

1. The two shapes of the front die are different, forming 1 products respectively, and the two shapes of the latter die are the same.

2. The water outlet of the three plate die can be automatically demoulding, so that it will be more convenient to work. Special attention should be paid to whether the ejection action of the soft rubber nozzle is reliable.

3, the front and rear molds of the mold rotate 180 degrees at the center. Such inspection must be carried out during work because it requires the height of the template. The total thickness of the front template plus the A Board shall not be less than 170 mm. This should carefully check the type of injection molding machine and other reference data.

4. In the design of the second injection master plate, in order to avoid the second master mold scratching the glue level of the first product, you can design a part to avoid the void. However, the strength of each sealant must be carefully considered, that is, whether the plastic will deform under high injection pressure during injection molding, which may lead to the possibility of a second injection batch front.

5. In injection molding, the size of the first injection molding product can be slightly larger, because it can be in the second molding with another positive mold tightly pressed to achieve sealing function. And pay attention to the second injection, whether the flow of plastic impulse the first molding products, plastic position deformation? If possible, we must find ways to improve it.

6, before A or B plate clamping, pay attention to whether the front mold slider or tilted top will first reset and crush the product. Therefore, we must find a way to first clamp the A and B boards, and then the front module slider. Or tilt top reset. The water conveyance arrangement of the two front and back molds is as good as possible, and the balance is the same.