Nozzle of injection molding machine

Abstract

The invention disclose a nozzle of an injection molding machine. The nozzle comprises a constant-temperature box, wherein a rotating shaft is rotationally arranged in the middle of the constant-temperature box; a plurality of feed pipes are uniformly distributed and arranged on one side wall of the constant-temperature box around the rotating shaft; the feed pipes are connected with different feedboxes; semicircular discharge ends are arranged at the end parts of the feed pipes; annular ports are arranged on the other side wall of the constant-temperature box corresponding to the feed pipes;the rotating shaft is provided with a connecting part, a plurality of connecting terminals are uniformly arranged on the connecting part, one connecting terminal is fixedly connected with a shoot needle through a bolt, the other connecting terminals are fixedly connected with blocking pieces through bolts, and the end part of one blocking piece is connected with a rotating handle; and the rotatingshaft is sleeved with a limiting spring A and a limiting spring B on both sides of the connecting part respectively. The nozzle provided by the invention has a simple structure and a low manufacturing cost, can isolate impurities in the injection molding machine, and can inject different materials into one mold.

Description

technical field [0001] The invention belongs to the field of injection molding machine equipment, in particular to an injection molding machine nozzle. 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 plastic that has been plasticized into the molten state (that is, the viscous flow state) into the closed cavity. The process of obtaining products after curing and setting. [0004] Injection moldi...

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 material in the current plastic production is 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, resulting in failure to work normally.

[0006] In addition, in the current injection molding products, some special products require multiple materials, and the existing injection molding machines need to be replaced to inject multiple materials into the same mold, which is very inconvenient

Images