One-way flow-limiting and anti-clogging nozzle for injection molding machine

Abstract

The invention discloses a one-way flow-limiting and anti-clogging injection molding machine nozzle, which comprises a nozzle body, a heating wire, a first driving spring and a second driving spring. The nozzle body is provided with a pouring pipe, and the left end of the pouring pipe A delivery pipe is installed, a spray tube is provided on the outside of the delivery tube, and a heating wire is provided on the outside of the spray tube, a second check valve plate is provided on the right side of the delivery tube, and the second check valve The plate is located inside the left end of the spray barrel, and the second check valve plate is interconnected with the spray barrel. The one-way flow-limiting and anti-clogging injection molding machine nozzle can use the driving force of the material to drive the spray cylinder to perform displacement movement, so that the spray cylinder can drive the conveying cylinder to insert into the injection molding head and push the first one-way valve plate, so that the injection molding The head remains open, which is convenient for subsequent injection molding operations. At the same time, the injection head can be dredged to avoid blockage of the injection head and the need for frequent manual cleaning.

Description

technical field [0001] The invention relates to the technical field of injection molding machine nozzles, in particular to a one-way flow-limiting and anti-clogging injection molding machine nozzle. Background technique [0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment for making thermoplastics or thermosetting plastics into various shapes of plastic products using plastic molding molds. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it shoot out. Filling the mold cavity, the nozzle of the injection molding machine is the key technology of the injection molding process, and it is the key component that injects the hot-melt plastic into the mold. However, the existing nozzles of the injection molding machine often have the following problems during use: [0003] 1. After the injection molding is completed, it is easy to reverse the material i...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a one-way flow-limiting and anti-clogging injection molding machine nozzle to solve the problem in the above-mentioned background technology that after the injection molding is completed, the material in the mold is easily reversed and drawn back when the nozzle is withdrawn. When the material is condensed and solidified, the opening of the nozzle is prone to clogging, which affects the subsequent normal injection molding process. However, manual cleaning of the nozzle is poor in cleaning effect and time-consuming and labor-intensive. During the completion of injection molding and the withdrawal of the nozzle, some materials will be If the residue remains in the nozzle, the nozzle itself cannot be closed in time at this time, resulting in the residual material dripping from the nozzle continuously, which is extremely easy to cause waste of materials and damage the production environment.

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