High-precision silicone rubber extrusion system

Abstract

The invention provides a high-precision silicone rubber extrusion system. A discharging outlet of a feeding system of the high-precision silicone rubber extrusion system is in rigid connection with a gear pump. A discharging outlet of the gear pump is in rigid connection with an extrusion head assembly. The extrusion head assembly comprises an adjusting seat in rigid connection with the gear pump. A diversion body is assembled in a step-shaped inner hole of the adjusting seat. A mandrel is installed in the center of the outer end face of the diversion body. The outer end face of the adjusting seat is in rigid connection with a mouth mold installation seat, a conical inner hole is formed in the center of the mouth mold installation seat, an annular circular bead is arranged on the inner end face of the mouth mold installation seat, an annular boss with an external thread is arranged on the outer end face of the mouth mold installation seat, and the annular circular bead is embedded in the inner hole of the adjusting seat and abuts against the outer end face of the diversion body. The mandrel is located in the conical inner hole of the mouth mold installation seat. A mouth mold is embedded in the annular boss and fixed through a nut installed on the external thread of the annular boss. According to the high-precision silicone rubber extrusion system, the gear pump feeding mode is adopted, and the problem that extruded products are unstable and inconsistent in dimension is solved.

Description

technical field [0001] The invention relates to the field of silicone rubber extrusion molding, in particular to a high-precision silicone rubber extrusion molding [0002] out of the system. Background technique [0003] In the current silicone rubber extruder, the rubber material enters the barrel through a synchronous feeding device, is extruded and sheared by the screw in the barrel, and then transported to the extruder head to form a product of the desired shape. Due to the characteristics of high viscosity and strong heat sensitivity of silicone rubber, the following problems are prone to occur: 1. Because the existing technology cannot ensure that the rubber material is fed into the machine head uniformly and stably, which in turn affects the dimensional stability of the extruded product, consistency. 2. Affected by the processing accuracy of the screw and barrel, and the smooth operation of the screw drive system, it is impossible to ensure that the amount of extru...

AI Technical Summary

Problems solved by technology

Due to the characteristics of high viscosity and strong heat sensitivity of silicone rubber, the following problems are prone to occur: 1. Because the existing technology cannot ensure that the rubber material is fed into the machine head uniformly and stably, which in turn affects the dimensional stability of the extruded product, consistency

2. Affected by the machining accuracy of the screw and barrel, as well as the smooth operation of the screw drive system, it is impossible to ensure that the amount of extruded glue remains consistent at all times, which in turn affects the dimensional accuracy of the extruded product

In response to the above problems, some people have improved the feeding device, as well as the shape of the screw, the aspect ratio, etc., but due to the influence of processing accuracy, etc., it is still unable to effectively solve the problem of unstable dimensions of the extruded product.

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