Secondary injection mold for special-shaped workpiece and injection molding method thereof

Abstract

The invention discloses a secondary injection molding die of a special-shaped workpiece. The secondary injection molding die comprises a male die and a female die which form a cavity in a die assembling state. the secondary injection molding die further comprises a first guide rail, a pedestal, a second guide rail, a base and an inner die core, wherein the first guide rail is arranged on the male die or the female die; the pedestal is arranged on the first guide rail and can slide along a long shaft direction of the first guide rail; the second guide rail is arranged on the pedestal; the base is arranged on the second guide rail and can slide along the long shaft direction of the second guide rail; and the inner die core is arranged on the base. An injection molding method by using the die comprises the following steps: positioning the workpiece on the inner die core; fixing an aluminum ring-type core on the inner die core; moving the base through the second guide rail to the inner die core to be directed at the cavity; moving the base through the first guide rail into the cavity of the inner die core in the male die or the female die; carrying out die assembling processing; opening the male die or the female die; moving the pedestal through the first guide rail to take the pedestal out of the cavity; moving the pedestal through the second guide rail to be away from the male die or the female die; and removing the aluminum ring-type core and the workpiece.

Description

technical field [0001] The invention relates to a secondary injection mold for special-shaped workpieces and an injection molding method using the mold. Background technique [0002] After the first injection molding process of some workpieces, the second injection molding process of the second special-shaped workpiece is required. like figure 1 and figure 2 Shaped workpieces shown. The workpiece is made of plastic as a whole, and the main structure is a hollow cylinder, but a circle of copper wires around its circumference is arranged in the middle of the cylinder. like figure 1 The product shown is a semi-finished product after the first injection molding. Since there is a layer of copper wire in the middle of the plastic, it can only be obtained after the second injection molding of the first special-shaped workpiece. figure 2 Finished product shown. [0003] Transferring from the first injection mold to the second injection mold of the second special-shaped workp...

AI Technical Summary

Problems solved by technology

[0003]Transfer from the first injection mold to the second injection mold of the second special-shaped workpiece, which may cause inaccurate positioning, damage to the workpiece, etc.

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