Multi-head nozzle for injection molding machine

Abstract

The invention discloses a multi-head nozzle for an injection molding machine. The multi-head nozzle comprises a nozzle body, wherein a flow channel for allowing raw material flows to flow through is arranged in the nozzle body, a material placing bin is mounted on the nozzle body, three discharge openings are formed in the bottom of the material placing bin at equal intervals, and the discharge openings are connected with tightening threaded holes which are in fastening connection with injection needles through threads, and a flow guide plate is arranged at the bottom of the material placing bin in an adhering and sliding manner; three material passing holes of which the opening diameters are equal to those of the discharge openings are formed in the flow guide plate, and a bracket A and a bracket B are arranged above the flow guide plate, and a guide shaft is arranged on one side wall of the material placing bin; a limiting block is arranged at the end part of the guide shaft, the bracket A sleeves the guide shaft in a sliding manner, and a hex nut is fixedly arranged outside the other side wall of the material placing bin; a displacement screw rod is arranged in the hex nut. Compared with the prior art, the multi-head nozzle disclosed by the invention is simple in structure, is low in manufacturing cost, can prevent pipelines from being blocked, can ensure smooth injection molding, and can also protect molds. When the nozzle is needed to be repaired in case of an accident, a production line can also operate.

Description

technical field [0001] The invention belongs to the field of injection molding machine equipment, in particular to a multi-head nozzle for an injection molding machine. Background technique [0002] Injection molding machine is also known as injection molding machine or injection machine. It is the main molding equipment for making thermoplastics or thermosetting plastics into various shapes of plastic products using plastic molding molds. Divided into vertical, horizontal, all-electric. The injection molding machine heats the plastic, applies high pressure to the molten plastic, and makes it shoot out to fill the mold cavity. [0003] The working principle of the injection molding machine is similar to the syringe used for injection. It uses the thrust of the screw (or plunger) to inject the plasticized plastic in the molten state (that is, the viscous flow state) into the closed cavity. The process of obtaining products after curing and setting. [0004] Injection mold...

AI Technical Summary

Problems solved by technology

Ordinary nozzles mostly have a one-stage structure and the nozzle itself does not have a heating function, but the heat will always be lost during the process of the raw material flow into the mold

Therefore, after the product is formed, it is easy to produce defects such as cold material marks and white spots.

Moreover, the raw materials in the current plastic production are usually a mixture of several plastic particles, but the melting points of various plastic particles are different, and it is easy to block the flow channel of the nozzle during the continuous temperature change process, resulting in failure to work normally.

The trouble is, when a clog needs to be repaired, the entire nozzle needs to be wrenched off the injection molding machine, which is time consuming, laborious and inefficient

And maintenance must be stopped, which greatly increases production costs

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