Multilevel telescopic cylindrical type nozzle color mixing mechanism

Abstract

The invention relates to a multilevel telescopic cylindrical type nozzle color mixing mechanism which is suitable to produce products with color mixing, multilayer color mixing or interlayer color mixing requirements in a plastics injection molding way. The multilevel telescopic cylindrical type nozzle color mixing mechanism comprises a valve core nozzle device and a multilevel telescopic cylindrical assembly, wherein the valve core nozzle device is fixed on a front supporting plate, the multilevel telescopic cylindrical assembly is fixed on a rear supporting plate, the valve core nozzle device is connected with the multilevel telescopic cylindrical assembly, and the front supporting plate and the rear supporting plate are oppositely fixed on four positioning rods by round nuts. The multilevel telescopic cylindrical type nozzle color mixing mechanism is also provided with round threads which tightly support the round nuts through stop screws. The invention controls a valve core to move through a plurality of layers of cylinders, thereby controlling the multilayer injection of a plurality of plastics so as to lead the products to achieve the effect of color mixing, multilayer color mixing or interlayer color mixing.

Description

technical field [0001] The invention relates to a multi-stage sleeve type nozzle color mixing mechanism, which is suitable for plastic injection molding to produce products requiring color mixing, multi-layer color mixing or interlayer color mixing. Background technique [0002] Generally, in the molding of plastic products, products of various colors are involved, and there are more mixed-color and clear-color products, while interlayer mixed-color products require less technology developed in China. Chinese patent ZL200620101766 "Interlayer Mixed Color Common Injection Mold" discloses a sandwich mixed color shared injection mold for producing interlayer mixed color plastic products. The flow channel in this patent is controlled by a one-way valve, and the structure of the diverter valve core is determined. Runner A and runner B cannot be opened at the same time, that is, the actions can only be completed in sequence. When one check valve is opened, the other check valve ca...

AI Technical Summary

Problems solved by technology

Chinese patent ZL200620101766 "Interlayer Mixed Color Common Injection Mold" discloses a sandwich mixed color shared injection mold for producing interlayer mixed color plastic products. The flow channel in this patent is controlled by a one-way valve, and the structure of the diverter valve core is determined. Runner A and runner B cannot be opened at the same time, that is, the actions can only be completed in sequence. When one check valve is opened, the other check valve cannot be opened (runner B is closed when runner A is opened or runner B is opened The flow path A is closed), and the flow paths at the two flow paths of flow path A and flow path B and the split valve core are relatively long, so when the material on one flow path is injected, it is possible to inject the material into the other flow path , so that two kinds of materials are mixed at this flow channel, which determines that when processing interlayer plastic products or products with special color-mixed plastics, the interlayer or color-mixing effect is not very ideal; in addition, this invention is an open nozzle, so It is determined that the nozzle should be tightly pressed against the mold during premolding, otherwise the nozzle will cause material leakage; and the premolding cannot be performed at the same time as opening and closing the mold (if it is performed at the same time, there may be material leakage on the mold), so will reduce efficiency

The disadvantages of this patent are: due to the one-way valve control, and the two flow paths of flow path A and flow path B and the flow path at the diverter valve core are relatively long, since the amount and pressure of the plastic cannot be accurately controlled during injection, it will It causes inaccurate measurement and inaccurate control of product accuracy; and the control of this one-way valve is controlled by the pressure of plastic, so the control method is single, resulting in few functions and poor versatility; at the same time, open nozzles cause material leakage phenomenon, low efficiency

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