The process of forming the appearance of the machine

(1) Closed mold: closed foam mold

When using the packaging material of the large bead material, the parting is often less than the radius of the pre-hair bead. It is good for the compressed air to be discharged from the air plug and gap during feeding, and it is good for the beads to fill the mold cavity quickly. When the steam is heated, the air and condensed water between the beads can be discharged from the cavity through the pores and gaps at the same time.

 

When using special beads for vanishing mold, due to the small diameter of beads, no gaps are left when the mold is closed, and the air and condensed water between beads can only be discharged from the mold cavity through the air plug. And leave a gap will make parting surface flash.

(2) preheat mold

Preheat mold before feeding is to reduce the condensation of the beads foam molding steam, shorten the foam molding time.

(3) Feeding

Commonly used feeding method. With the material gun, the beads are sucked into the mold cavity by using compressed air.

For simple mold cavity, this method works well. However, for more complex molds, the bead can not be fully filled cavity.

A.

Suction filling

Commonly used feeding method. With the material gun, the beads are sucked into the mold cavity by using compressed air.

For simple mold cavity, this method works well. However, for more complex molds, the bead can not be fully filled cavity.

B.

Suction filling

When feeding, positive pressure is applied to the bead so that the bead is filled with mold cavity and has a certain degree of compactness.

 

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