Three-way core-pulling mechanism of injection mold

Abstract

A three-way core-pulling mechanism of an injection mold comprises an upper doubling plate, a lower doubling plate; the upper doubling plate is provided with a cavity, the lower doubling plate is provided with a through hole, the lower doubling plate is provided with die feet, an upper thimble plate, a lower thimble plate and a thimble, the die feet are provided with a mold core, a plastic part is arranged between the mold core and the cavity, the plastic part is provided with an upper oblique rib, a lower oblique rib and a side panel, the side panel is provided with a side hole, the three-way core-pulling mechanism is characterized in that a controlled distance kerve, an upper oblique chute and oblique spring slots are arranged in the cavity, the upper doubling plate is provided with a controlled distance pull rod connected with a controlled distance pull plate, the controlled distance pull plate is matched with the controlled distance kerve, the upper oblique chute is internally provided with an upper oblique sliding block, the lower part of the upper oblique chute is provided with an upper rib slot matched with the upper oblique rib, baffles are arranged at two sides of the upper oblique sliding block, the oblique spring slots are internally provided with oblique springs of which the upper ends contact the baffles, an oblique guide column is arranged under the cavity, the mold core is provided with a side core-pulling sliding block provided with a side lug and an oblique guide hole, the mold core is internally provided with a lower oblique chute internally provided with a lower oblique sliding block, the upper end of the lower oblique sliding block is matched with the lower oblique rib, an oblique guide slot is arranged in the lower oblique sliding block, one side of the mold core is provided with an oil pumping cylinder connected with a bent pin, and the bent pin is matched with the oblique guide slot.

Description

technical field [0001] The invention relates to an injection mold, in particular to a three-way core-pulling mechanism of an injection mold. Background technique [0002] After the plastic part is injection-molded by the injection mold, if the plastic part is formed with upward inclined ribs, downward inclined ribs and side holes, the existing technology usually enlarges the cavity and the core, and then separates them in the cavity and the core. Set the oil cylinder, use the oil cylinder to directly pull the core, the cost of the oil cylinder is high, and after the cavity and the core are enlarged, the volume of the entire injection molding machine will increase, and the tonnage of the injection molding machine will increase, thereby increasing the manufacturing cost, and the core pulling action of the oil cylinder is slow. Reduced production efficiency. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the prior a...

AI Technical Summary

Problems solved by technology

[0002] After the plastic part is injection-molded by the injection mold, if the plastic part is formed with upward inclined ribs, downward inclined ribs and side holes, the existing technology usually enlarges the cavity and the core, and then separates them in the cavity and the core. Set the oil cylinder, use the oil cylinder to directly pull the core, the cost of the oil cylinder is high, and after the cavity and the core are enlarged, the volume of the entire injection molding machine will increase, and the tonnage of the injection molding machine will increase, thereby increasing the manufacturing cost, and the core pulling action of the oil cylinder is slow. reduced productivity

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