Gasket protection ring composite forming mold

Abstract

The invention discloses a gasket protection ring composite forming mold. The mold comprises an upper mold plate and a lower mold plate; a lower fixing plate and a female mold are sequentially arranged on the lower mold plate, a lower punch mold is fixed to the lower fixing plate, a lower discharging sleeve is arranged between the lower punch mold and the female mold, an upper clamping plate, an elastic base plate and a lower clamping plate are sequentially connected to the lower face of the lower mold plate, and multiple lower ejection rods are arranged between the upper clamping plate and the lower discharging sleeve; and an upper base plate and an upper fixing plate are sequentially arranged on the lower face of the upper mold plate, an upper punch mold and a male mold are fixed to the lower face of the upper base plate, an upper discharging sleeve is arranged between the upper punch mold and the male mold, a punch sleeve is arranged on the upper face of the upper mold plate, a punching rod is arranged in a center hole of the punch sleeve, and multiple upper ejection rods are arranged between the lower end of the punching rod and the upper discharging sleeve. The mold has the beneficial effects that through one-time punching, complete forming of a protection ring can be finished, manufacturing cost can be reduced, production efficiency is improved, the mold number is small, occupied punching devices are few, time for mold replacing can be saved, and the punching devices can be sufficiently used.

Description

technical field [0001] The invention relates to a molding die, in particular to a composite molding die for sealing gasket and retaining ring used for stamping the retaining ring used on the cylinder gasket of an automobile engine. Background technique [0002] At present, gaskets of various shapes need to be used on automobile engines, and these gaskets are usually provided with multiple cylinder ports, ventilation holes and oil passage holes. In order to improve the sealing performance, a retainer is usually press-fitted on the cylinder port, air hole and oil hole. [0003] In the existing structure of retainer molding dies, one set of dies is used for forming and stretching respectively. This structure not only increases the number of dies prepared, but also increases the manufacturing cost of the dies, and also increases the stamping process, resulting in low production efficiency. Contents of the invention [0004] The technical problem to be solved by the present in...

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Problems solved by technology

[0003] In the structure of the existing retainer molding die, one set of dies is used for forming and stretching respectively. This structure not only increases the number of dies prepared, but also increases the manufacturing cost of the dies, and also increases the stamping process, resulting in low production efficiency.

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