Injection device of injection molding machine and its operation method

Abstract

The invention relates to an ejection device of an injection molding machine and an operation method of the ejection device. The ejection device of the injection molding machine comprises more than three ejection mechanisms. All the ejection mechanisms are connected with a hot runner manifold through flanges at the front ends of the ejection mechanisms. The hot runner manifold is provided with an ejection nozzle flange, and an ejection nozzle is arranged on the ejection nozzle flange. The ejection nozzle is connected with the ejection nozzle flange through threads. The hot runner manifold is provided with melt channels communicating the ejection mechanisms and the ejection nozzle. Check valves are arranged between all the ejection mechanisms and the melt channels. The ejection mechanisms include the first injection mechanism, the second ejection mechanism and the third ejection mechanism, and the first injection mechanism, the second ejection mechanism and the third ejection mechanism are arranged in the shape of a sector. The ejection device of the injection molding machine has high capacity and can perform multiple times of injection according to the weight of a plastic product, therefore, the injection amount is very large, and the number of optimum injection times can be determined according to the product and the mold technology in the actual using process. The ejection device of the injection molding machine has the advantages of being flexible to operate, high in injection efficiency, high in capacity, wide in application range and the like.

Description

technical field

[0001] The invention relates to an injection molding machine, in particular to an injection device of the injection molding machine and an operating method thereof. Background technique

[0002] With the rapid development of industry and urbanization, the use of large plastic products has become very common. For the molding method of large plastic products, if the traditional injection molding process is used to complete it, the investment in equipment and molds is very high, and the investment cost of tens of millions will also increase the production cost of large plastic products, which is not conducive to promotion. For example, some large-scale plastic pipe fittings, plastic trays, automobile plastic covering parts, plastic municipal pits, etc., the product volume requires an injection volume of more than 15 kg. If such a large injection volume is produced by a traditional injection molding machine, it will take about 2000. Tons of injection molding mac...

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