Plastic Injection Equipment

Abstract

The invention discloses plastic injection equipment. A small-caliber spray nozzle replacement device is arranged at the lower part of a spray nozzle of the plastic injection equipment; by changing the polarity of an electromagnet, the electromagnet can be adsorbed onto a first permanent magnet of which the polarity is opposite to that of the electromagnet under an electromagnetic interaction and sleeves an original spray nozzle, so that an injection caliber of the spray nozzle is reduced; when the electromagnet is required to be recovered so as to restore the injection caliber of the original spray nozzle, the polarity of the electromagnet is changed; and by means of setting of a second permanent magnet, the electromagnet of which the polarity is opposite to that of the second permanent magnet can be attracted onto the second permanent magnet. The plastic injection equipment disclosed by the invention is simple and convenient, thereby achieving the aim of flexibly selecting spray nozzles with a large caliber and a smaller caliber according to requirements under the condition of not detaching the original spray nozzle; and in addition, the small-caliber spray nozzle replacement device is arranged on a drawable main board, and does not occupy the space in use. According to the plastic injection equipment disclosed by the invention, the defective rate is reduced.

Description

technical field [0001] The invention relates to the field of processing devices. More specifically, the present invention relates to a plastic injection equipment. Background technique [0002] As a material that is often in contact with in daily life, plastic is widely used. Injection molding machine is a kind of plastic machinery, referred to as injection machine or injection molding machine, is the main molding equipment for making thermoplastics or thermosetting plastics into various shapes of plastic products using plastic molding molds. The working principle of the injection molding machine is similar to that of the syringe used for injection. It uses the thrust of the plunger to inject the plasticized viscous plastic into the closed mold cavity, and obtains the finished product after curing. . [0003] The molding process of the commonly used screw-type injection molding machine is to add granular or powdery plastics into the barrel, and make the plastic into a mol...

AI Technical Summary

Problems solved by technology

[0004] The current nozzles are all integrally formed and are usually used together with molds. However, the optimal injection volume required for different volumes, thicknesses, materials, and shapes of plastics are different. In some cases, molds or products may have large mold volumes but require The injection volume is small, or a nozzle with a smaller caliber is required to obtain a higher quality product. At this time, the standard specification may not meet the demand, and replacing the nozzle or mold with the existing nozzle is time-consuming and laborious and increases the cost. Therefore, it is urgent Need to find a plastic injection equipment that can easily replace small-caliber nozzles

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