Cutting-off methods of edge gates in plastic moulds and moulds thereof

Abstract

The invention provides cutting-off methods of edge gates in plastic moulds and moulds thereof, wherein the cutting-off methods include an edge gate pouring gate mold inserting technique and an edge gate pouring gate hot melting extrusion technique. A mould 1 comprises a top plate, a bottom plate, a static template, a movable template, a thimble panel, a thimble backing plate, product thimbles, a static mould core, a movable mould core, an edge gate thimble and a flat thimble. A mould 2 comprises a static mould holder and a movable mould holder, wherein a static template, a movable template, a product thimble fixed plate, a product thimble top plate, a compression nozzle thimble fixed plate, a compression nozzle thimble top plate, a mould leg, a static mould core, a movable mould core, product thimbles, a compression nozzle thimble, an edge gate thimble and a return pole of the compression nozzle thimble top plate.

Description

technical field [0001] The invention relates to a plastic mold for an injection molding machine. One is to press and cut off the large nozzle by setting a large nozzle gate insert in the mold; The molten rubber material is extruded to cut off the large nozzle. Background technique [0002] Most of the Dashuikou injection molds now only rely on manual post-processing of the shear nozzle, and the remaining very few Dashuikou injection molds can rely on complex rows (also called sliders) and high costs such as fragile and expensive tools. Internal automatic water cutting port. Others such as needle-point thin nozzle, diving nozzle, banana nozzle (also called horn nozzle), half-banana nozzle (also called half-horn nozzle, a new nozzle between the diving inlet and banana nozzle), pin-point hot water Although the nozzle, needle valve hot water outlet, etc. can have the function of automatic water cut-off in the mold, they are either expensive or have molding defects, so they can...

AI Technical Summary

Problems solved by technology

[0002] Most of the Dashuikou injection molds now only rely on manual post-processing of the shear nozzle, and the remaining very few Dashuikou injection molds can rely on complex rows (also called sliders) and high costs such as fragile and expensive tools. Internal automatic water cutting port

Others such as needle-point thin nozzle, diving nozzle, banana nozzle (also called horn nozzle), half-banana nozzle (also called half-horn nozzle, a new nozzle between the diving inlet and banana nozzle), pin-point hot water Although the nozzle, needle valve type hot water outlet, etc. can have the function of automatic water cut-off in the mold, they are either expensive or have molding defects, so they cannot replace the large nozzle.

At present, more than 60% of the molds are ordinary large nozzles, and the separation between the nozzle and the product can be realized only by manual post-processing and cutting of the nozzle: in this way, the labor cost is high, and the difference in manual post-processing and cutting of the nozzle is large, and manual cutting of the nozzle requires a knife and plastic parts It is easy to scratch and not good, and people are also easy to be injured and fatigued

[0003] After retrieving the published literature, it is not found that there is a mold identical to this technology

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