Vulcanizing mold for double-ejection type demolding of automobile ball head dust cover

Abstract

The invention discloses a vulcanizing mold for double-ejection type demolding of an automobile ball head dust cover. The vulcanization mold comprises an upper mold, a middle mold and a lower mold, at least one first mounting hole is formed in the middle mold, a first core is movably mounted in the first mounting hole, two ends of the first core extend out of the first mounting hole, a first expansion part is arranged at one end of the first core, the other end is provided with a first clamping spring, a second mounting hole is formed in the first core, a second core is movably mounted in the second mounting hole, two ends of the second core extend out of the first core, a second expanding part is arranged at one end of the second core, a second clamping spring is arranged at the other end of the second core, a first placement hole is formed in the lower mold, a movable plate is further arranged between the middle mold and the lower mold, and the movable plate is provided with a second placement hole. The mold is simple in structure and high in practicability.

Description

technical field [0001] The invention relates to the field of vulcanization molds, in particular to a vulcanization mold for a double-top type car ball head dust cover. Background technique [0002] Because the car suspension arm ball joint works under high temperature, dusty and rainy conditions, a dust cover is needed to protect the car ball joint. [0003] Because of the special mission of the dust cover, there are several sealing rings evenly distributed on the inner walls of both ends, and a ring groove is formed between any two adjacent sealing rings. , the outer walls at both ends have irregular bumps, and the dust cover is large in the middle, small at both ends and hollow inside, and the lower end must be expanded when demoulding (because the workpiece is made of rubber, it is a soft workpiece, Can be expanded) to get rid of the core (the core is adapted to the inner wall of the workpiece, which is a shape with a large middle and small ends), and the demoulding can ...

AI Technical Summary

Problems solved by technology

[0003] Because of the special mission of the dust cover, there are several sealing rings evenly distributed on the inner walls of both ends, and a ring groove is formed between any two adjacent sealing rings. , the outer walls at both ends have irregular bumps, and the dust cover is large in the middle, small at both ends and hollow inside, and the lower end must be expanded when demoulding (because the workpiece is made of rubber, it is a soft workpiece, Can be expanded) to get rid of the core (the core is adapted to the inner wall of the workpiece, which is a shape with a large middle and small ends), and the demoulding can be successful. Therefore, after vulcanization and molding in the vulcanizing machine, demoulding is a serious problem. The traditional When the mold is demolded, the core is fixed, and a molding cavity is formed between the core, the upper mold, and the middle mold. The staff takes a compressed air gun to purge, and waits for the concave and convex parts of the upper and lower ends of the workpiece to be blown away, and it will be compared with the traditional core. After the displacement occurs, wear heat-insulating gloves to expand the lower end and overcome the large part in the middle of the core, and then demould. On the one hand, the demoulding efficiency is low, and the output is low in one day; on the other hand, the fingers of the staff are often caught It is hot and red; and there is too much manual force when demolding, causing irreversible deformation to the workpiece

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