Mold for automatically cutting water port in mold of common injection molding machine through cold pulling

Abstract

The invention relates to a mold for automatically cutting a water port in a mold of the common injection molding machine through cold pulling. The mold comprises a fixed mold seat, a fixed mold plate, a movable mold seat, a movable mold plate, a mold foot and an injection molding machine top rod. The mold has four water port cutter structures, wherein 1, a water port cutter is arranged in a fixed mold core, and an underflow channel is formed in the water port cutter and is connected with a large water port main flow channel and a product cavity; 2, a water port cutter is arranged in a fixed mold core and comprises a cutter body and a cutter head, the cutter body is provided with a large water port main flow channel, and an underflow channel is formed on the cutter head and is connected with a product cavity; 3, a water port cutter is also arranged in a movable mold core, and an underflow channel is formed at the front end of a cutter body and is connected with a product cavity; and 4, a movable mold core is provided with a movable mold core boss and a large water port sub flow channel, the large water port sub flow channel is connected with a large water port main flow channel and a product cavity, and a glue inlet mode is a large water port bottom lapping glue inlet mode. The mold automatically cuts the water port in the mold in a mode of separating a product from a large water port sprue through cold pulling and cutting.

Description

technical field [0001] The invention relates to a plastic mold for an ordinary injection molding machine, and mainly refers to a mold for an ordinary injection molding machine with internal cold pulling and automatic water cutting. Background technique [0002] At present, the injection molding machines of most injection molding companies are traditional ordinary injection molding machines without mold clamping and ejection functions. This kind of ordinary injection molding machines accounts for more than 99% of the world's share. At the same time, due to the particularity of the structure of a specific product, the glue can only be injected into the window hole in a small space or on the side wall of the product. The quality of the product often requires the glue to be injected in a large nozzle, and the injection mold of a large nozzle can only be done manually. Process the water cutout, and the remaining few injection molds with large nozzles can realize the automatic wat...

AI Technical Summary

Problems solved by technology

At the same time, due to the particularity of the structure of a specific product, the glue can only be injected into the window hole in a small space or on the side wall of the product. The quality of the product often requires the glue to be injected in a large nozzle, and the injection mold of a large nozzle can only be done manually. Process the water cutout, and the remaining few injection molds with large nozzles can realize the automatic water cutout in the mold by complex row positions (also called sliders) and high costs such as fragile and expensive tools, let alone in the small space of the window. It is very difficult to manually cut the glue into the hole

Others such as needle-point thin nozzle, diving nozzle, banana nozzle (also called horn nozzle), half-banana nozzle (also known as 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 manual post-processing and cutting of the nozzle is very different, and the 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 searching the published literature, it is not found that the same technology as this technology and standardized cutting tools is used on plastic molds

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