A kind of pvc multicolor blowing injection molding equipment and molding method thereof

Abstract

The invention provides a PVC multicolor blowing injection molding apparatus. The apparatus comprises a jet gun, a hot blowing device, a double color die, a gooseneck boom and a preheating device, the double color die is movably connected to the inside of the preheating device, the jet gun is fixed on the gooseneck boom, and the jet gun is movably connected to the double color die; the preheating is arranged on the gooseneck boom, and the hot blowing device is installed on the side surface of the gooseneck boom; the hot blowing device comprises an air compressor, a pipeline, a triple piece, a heating chamber, an air valve and a throttle valve, the air compressor is connected with the triple piece through the pipeline, the triple piece is connected with the heating chamber, the air valve is electrically connected with the heating chamber, and the double die is movably connected between the air valve and the throttle valve; and the preheating device comprises an oven, a heater and an air switch, the heater is electrically connected with the oven, the double color die is movably connected to the inside of the oven, and the heater is electrically connected with the air switch. The apparatus can prevent the cracking or slitting of a product and improve the quality and the yield of the product.

Description

technical field [0001] The invention relates to an injection molding process and method, in particular to a PVC multi-color blowing injection molding process and method. Background technique [0002] In the shoe-making industry, there are strict requirements on the injection of plastic soles, and the amount of injection is crucial to the quality of the product. Inaccurate injection is either scrapping the product or wasting materials. [0003] At present, in the production of PVC multi-color blown soles or slippers, it is known that after the first color injection is completed and the mold is changed, the second color injection is used to complete the production of the entire sole or slippers. The front and rear two-color materials cannot be bonded during the injection molding process. However, there are cracks and gaps in the soles or slippers, causing quality problems when the multi-color PVC air-blown soles or slippers occur, so that the normal production of multi-color P...

AI Technical Summary

Problems solved by technology

[0004] The invention proposes a PVC multi-color air blowing injection molding equipment and its molding method, which solves the defects that the existing PVC air blowing slippers or shoe soles are too single, and the soles are easy to crack; the invention has simple structure, convenient operation, and realizes multiple color, so that it has a beautiful appearance, and the sole is not easy to crack when using multi-color paste

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