Gate removing structure of injection mold and injection mold

Abstract

The invention discloses a gate removing structure of an injection mold and the injection mold. The gate removing structure comprises a front mold insert, a floating insert and a driving structure; a boss is arranged at the top end of the front mold insert in a protruding mode; the floating insert is arranged outside the boss in a sleeving mode and can slide along the boss; the boss is provided with an inverted part of which the width is increased in the protruding direction of the boss and further provided with a runner extending downwards from the top surface of the boss; an inner cavity of the floating insert and the top end of the boss form a gate zone communicating with the runner; the inverted part is located in the gate zone; and the driving structure drives the floating insert to slide along the boss. Large molding entrances like a large gate structure do not need to be arranged, a large-area trace at the joint of a product and the runner is avoided, the appearance quality of the product is improved, a three-plate mold does not need to be arranged, only the inverted part and the floating insert are needed, thus, the structure is simple and stable, and the mold cost is reduced.

Description

technical field [0001] The invention relates to the technical field of molds, in particular to a dewatering port structure of an injection mold and the injection mold. Background technique [0002] For injection molding products, especially plastic parts such as drums, basins, boxes, and shaped deep cavities, to avoid surface clamping and meet injection molding requirements, the common practice is to use large spouts or hot runner dispensing ports. And sealing pin, or three-plate mold fine nozzle design, fast filling speed, good pressure holding effect, no or minimal weld lines on the product surface. However, for large nozzles, both the product and the cold material (parts formed after the plastic in the runner is cooled and formed) are demoulded on the parting line. Therefore, the cold material is still integrated with the product after demoulding, and the nozzle needs to be trimmed. A large rubber mouth print seriously affects the appearance of the product; while using a...

AI Technical Summary

Problems solved by technology

However, for large nozzles, both the product and the cold material (parts formed after the plastic in the runner is cooled and formed) are demoulded on the parting line. Therefore, the cold material is still integrated with the product after demoulding, and the nozzle needs to be trimmed. A large rubber mouth print seriously affects the appearance of the product; while using a hot runner increases the cost of the mold; using a three-plate mold with a fine nozzle, the mold will be thicker and the front mold needs a dehydration port, and for deep cavity products, the A plate is thicker , the load bearing of the guide column is too large, it is easy to deform or burn to death, and the structure is not stable enough. If the A plate is too thick, the tonnage of the injection molding machine needs to be increased, causing a lot of inconvenience

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