Porous type nozzle core pin-point sprue hot runner spray nozzle

Abstract

The invention discloses a porous type nozzle core pin-point sprue hot runner spray nozzle comprising a nozzle core and a sprue bushing which are coaxially sleeved in one end of a spray nozzle body, one end of the nozzle core is embedded into the spray nozzle body, the other end of the nozzle core is a cone end, the bottom of the cone end is encircled by the sprue bushing, a first runner is formed in the spray nozzle body, a second runner is formed in the nozzle core, the second runner is communicated with the first runner, the conical surface of the cone end is respectively provided with three runner holes, the three runner holes are communicated with the second runner, and an included angle is formed between the axis of each runner hole and the axis of the second runner, and the included angle is an acute angle. According to the porous type nozzle core pin-point sprue hot runner spray nozzle disclosed by the invention, a combined structure is adopted, the three circular runner holes which have certain angles with the second runner of the nozzle core are formed after matching with the spray nozzle body and the sprue bushing, therefore, plastic materials are more smooth to flow and much lower in molding pressure; and very small sprue marks are formed on the surface of a molded product, so that the purpose of forming an extremely excellent sprue appearance can be achieved.

Description

technical field [0001] The invention relates to the fields of hot runner molds and injection molding, in particular to a hot runner nozzle with a porous nozzle core point gate. Background technique [0002] Hot runner nozzles are used in injection molds. With the development of injection molds, hot runners have been widely used in injection molds. Hot runner nozzles are an indispensable and important part of hot runners. The new nozzles with this point gate structure are The new structure is improved on the basis of the existing technology. The new structure is mainly improved on the following two points of the existing technology: 1. The surface requirements of plastic products are extremely high, and the existing point gate structure is used. There are large gate marks left on the surface; 2. The core material of the existing point gate structure is relatively easy to wear when molding glass fiber plastic products. Contents of the invention [0003] The purpose of the p...

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Problems solved by technology

[0002] Hot runner nozzles are used in injection molds. With the development of injection molds, hot runners have been widely used in injection molds. Hot runner nozzles are an indispensable and important part of hot runners. The new nozzles with this point gate structure are The new structure is improved on the basis of the existing technology. The new structure is mainly improved on the following two points of the existing technology: 1. The surface requirements of plastic products are extremely high, and the existing point gate structure is used. There are large gate marks left on the surface; 2. The core material of the existing point gate structure is relatively easy to wear when molding glass fiber plastic products

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