Structure of double colored plastic injection molding machine and process modification thereof

Abstract

The invention relates to a structure of a double colored plastic injection molding machine and process modification thereof. The structure comprises a die combining mechanism, injection devices and a die specially arranged for the die combining mechanism and the injection devices. The number of the injection devices is two, and one injection device has the same installing positions as a common injection machine and is installed on one side of the injection molding machine. The structure of the double colored plastic injection molding machine and process modification of the structure are characterized in that the other injection device is installed on the injection molding machine, after one injection device finishes injection of plastic slurry of one color, a controller gives commands, a die cavity is changed according to requirements, space is spared in a die, the other injection device starts injection of plastic slurry of another color, and a purpose of double colored plastic injection molding is achieved. The structure of the double colored plastic injection molding machine and the process modification of the structure have the advantages of omitting a rotating disc device and matched driving mechanism, locating mechanism and locking mechanism and reducing manufacture cost of the plastic injection molding machine. During plastic injection molding, rotating procedures are omitted, plastic injection molding time is saved, precision requirements on the die is reduced, production efficiency is greatly improved, and electrical energy consumption is reduced.

Description

Technical field [0001] The invention relates to an injection molding machine, in particular to a two-color injection molding machine. technical background [0002] Nowadays, there are many two-color plastic products, which are usually manufactured by two-color injection molding machines. However, the purchase cost of two-color injection molding machines is relatively high, and its structure is also complicated. For example, the patent number CN200820120156.3 "Mold Rotating Device for Clear Two-color Injection Molding Machine" It is designed to make use of the existing ordinary injection molding machine to facilitate the production of clear two-color products, because the two-color injection device of the injection molding machine is generally composed of two parallel barrels connected with two corresponding parallel nozzles, so the Invented "the mold rotation device of the clear two-color injection molding machine, which is composed of a movable template, a rotating disc, a trans...

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Problems solved by technology

[0002] Now there are many two-color plastic products, which are usually manufactured by two-color injection molding machines, but the purchase cost of two-color injection molding machines is relatively high, and its structure is also complicated. It is designed to use the existing ordinary injection molding machine to produce clear and two-color products. Because the two-color injection device of the injection molding machine is generally composed of two parallel barrels connected to the corresponding two parallel nozzles, so this Invented "the mold rotating device of the clear two-color injection molding machine, which consists of a movable platen, a rotating disc, a transmission mechanism that drives the rotating disc to rotate, a positioning mechanism that positions the moving rotating disc, and a control mechanism that controls its positioning", through the rotation of the mold The device reaches the mobile injection port and docks with the nozzle to inject plastic slurry of two colors. This kind of injection molding machine is designed to control the rotation of the rotating disc. The structure is complex, the manufacturing and processing are difficult, the maintenance requirements are high, and it occupies an additional area. Larger area, longer injection cycle

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