Improved oil seal type mold

Abstract

The invention provides an improved oil seal type mold, which comprises an upper mold, a middle mold, a lower mold, a first mold core and a second mold core, wherein the upper mold, the middle mold andthe lower mold are in vertical arrangement; the middle mold is provided with a first die cavity; the top end of the lower mold is provided with an annular support table which extends into the first die cavity and is used for supporting an oil seal framework; the first mold core is arranged in the first die cavity; the bottom end of the first mold core is abutted against the lower mold; the secondmold core is arranged in the first die cavity; the second mold core is abutted against the first mold core; the bottom end of the upper mold is provided with an annular table extending into the firstdie cavity; in the mold matching state, a die cavity is formed among the upper mold, the middle mold, the lower mold, the first mold core and the second mold core; the die cavity is communicated witha glue injection flow passage; a glue injection opening is formed in the upper mold; a glue injection flow passage for connecting the glue injection opening and the die cavity is formed between the upper mold and the second die cavity. The non-flash design and the flash cutting process are used; shaping is used in four parts; the non-flash design is used in three positions; only the flash in theglue inlet position need to be cut.

Description

technical field [0001] The invention relates to the technical field of oil seal molds, in particular to an improved oil seal mold. Background technique [0002] Such as figure 1 As shown, the existing oil seal mold is a molded structure, with a total of 4 types, one of which adopts the flash cutting process, and the other 3 adopts the edge tearing design, which requires manual tearing of the flash after the subsequent process, which is low in efficiency and high in cost. The quality is unstable, and in order to ensure the tearing effect, the edge tearing groove is usually designed to be very close to the cavity, less than 0.1mm, and the cutting edge must be sharp, so that the flash can be easily torn, but in actual production, the distance between the mold During this period, friction and collision will occur between the mold and the production tool, which will cause damage to the edge and increase the difficulty of edge tearing. Contents of the invention [0003] Based ...

AI Technical Summary

Problems solved by technology

[0002] like figure 1 As shown, the existing oil seal mold is a molded structure, with a total of 4 types, one of which adopts the flash cutting process, and the other 3 adopts the edge tearing design, which requires manual tearing of the flash after the subsequent process, which is low in efficiency and high in cost. The quality is unstable, and in order to ensure the tearing effect, the edge tearing groove is usually designed to be very close to the cavity, less than 0.1mm, and the cutting edge must be sharp, so that the flash can be easily torn, but in actual production, the distance between the mold During the period, there will be friction and collision between the mold and the production tool, which will cause damage to the edge and increase the difficulty of edge tearing

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