Three-colour injection moulding device

Abstract

The invention discloses a three-colour injection moulding device. According to the invention, a middle material ejection gun transversally moves by virtue of a movement track, and the position of a middle charge hole of a moulding die can be adapted through large-range transversal movement of the middle material ejection gun; after a locking device is unscrewed, a middle adapter elbow is capable of rotating with a conical head at the discharge end of the middle material ejection gun by virtue of a connector of a first elbow part, so that a middle material ejection nozzle is specifically aligned with the middle charge hole of the moulding die, and the locking device can be screwed, so that location convex bars and strip-shaped concave grooves are correspondingly buckled to guarantee no desiderative rotation of the middle adapter elbow; and after the locking device is screwed, the surface and a conical inner surface of the conical head are mutually matched to clamp elastic sealing cushion layers to seal on the contact surfaces, and external annular convex lines and internal annular convex lines can clamp the elastic sealing cushion layers at the two sides, so that the surfaces of the elastic sealing cushion layers are deformed and mutually embedded in the external annular convex lines and the internal annular convex lines, thus sealing contact areas are remarkably increased, and the sealing effect is better.

Description

technical field [0001] The invention relates to the field of injection molding devices, in particular to a three-color injection molding device. Background technique [0002] More and more shoes are injection molded by injection molding device, and the structure of the injection molding device is known. For example, the Chinese invention patent CN201410647897.7 discloses a fully automatic injection molding machine, including a mold station, an injection device and a main frame. That is: the mold station includes a mold opening and closing cylinder, a connecting plate mechanism, a guide column, an upper plate, a middle plate and a lower plate, the upper plate and the lower plate are respectively fixed on the upper end and the lower end of the guide column, and the middle plate is slidably arranged on the On the guide column, the cylinder barrel of the mold opening and closing cylinder is fixed on the upper plate, and the piston rod of the mold opening and closing cylinder is ...

AI Technical Summary

Problems solved by technology

This invention is widely used, but in actual use, it is similar in structure to other injection molding devices on the market, and cannot adapt to various types of molds with feed holes in different positions. Usually, it is necessary to replace the gun or even the entire injection molding machine. One machine, the adaptability is too single, the use is not flexible enough, and the practicability needs to be improved

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