Precision mold for cosmetic internal screw thread member

Abstract

The invention relates to a precision mold for a cosmetic internal screw thread member, which belongs to the technical field of plastic molds. The precision mold comprises two great parts, i.e., a front mold and a rear mold; grooves arranged at adjacent surfaces of a front mold fixing plate and a stripper plate in the part of the front mold form a row of fixing grooves, core loosing means are connected with the fixing grooves through a rolling bearing, a power gear is arranged in the fixing grooves, the power gear is externally connected with a motor and internally connected with transmission gears of every core loosing means, the transmission gears are in fixed connection with a rotation shaft which is led out downwards, a fixed block is provided at the joint of the rotation shaft and thestripper plate, the body of the rotation shaft is provided with a core returning rod, the lower end of the core returning rod is connected with a core through fixing pins, and the core returning rod is slidably connected with a fixing sleeve; the mold orifice of a front core insert and the mold orifice of a rear core insert closely penetrate each other. According to the invention, de-threading isrealized by loosing a core with gears; precision of the mold reaches 0.01 mm, precision of a product reaches 0.05 mm, and the advantages like high production efficiency are achieved.

Description

technical field [0001] The invention belongs to the technical field of plastic moulds, and relates to a precision mold of an internal thread member in the form of gear transmission core pulling, in particular to a precision mold of an internal thread member of cosmetics. Background technique [0002] Cosmetic internal thread components are a transmission device that pushes cosmetics out of the packaging pen during the use of cosmetics. It is some high-end cosmetics, which require delicate parts of the cosmetics, and it is absolutely not allowed to affect product sales and product positioning due to the quality of the parts. One is to manually twist out the product, the production efficiency cannot be improved, and the quality is still difficult to guarantee; the other is the rack core-pulling, because it is difficult to accurately control, so the precision of the rack core-pulling is relatively low. Contents of the invention [0003] Aiming at the problems existing in the...

AI Technical Summary

Problems solved by technology

[0002] Cosmetic internal thread components are a transmission device that pushes cosmetics out of the packaging pen during the use of cosmetics. It is some high-end cosmetics, which require delicate parts of the cosmetics, and it is absolutely not allowed to affect product sales and product positioning due to the quality of the parts. One is to manually twist out the product, the production efficiency cannot be improved, and the quality is still difficult to guarantee; the other is the rack core-pulling, because it is difficult to accurately control, so the precision of the rack core-pulling is relatively low

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