Plastic bottle pipe blank forming method and pipe blank mold

Abstract

The invention relates to a plastic bottle pipe blank forming method and a pipe blank mold. The plastic bottle pipe blank forming method comprises the following steps of S1, precooling a pipe blank mold core and a pipe blank mold wall, wherein the pipe blank mold core and the pipe blank mold wall are both of a hollow structure, and the pipe blank mold core and the pipe blank mold wall are combinedto form the pipe blank mold; and S2, injecting an injection molding machine into the pipe blank mold to conduct injection molding to form a pipe blank, wherein the pipe blank mold core and the pipe blank mold wall are connected to a temperature control device, and the temperature control device comprises a first temperature detector, a second temperature detector, a controller, a solenoid valve, acirculating system and a cooling device. The pipe blank mold is novel in structure. The pipe blank mold core and the pipe blank mold wall are arranged into the hollow structure. The first temperaturedetector is arranged in the pipe blank mold core. The second temperature detector is arranged in the pipe blank mold wall. The first temperature detector and the second temperature detector transmitdetected temperature signals to the controller in time to ensure real-time monitoring on the temperatures of the pipe blank mold core and the pipe blank mold wall.

Description

technical field [0001] The invention relates to a processing and molding method and device for plastic products, in particular to a tube blank forming method and tube blank mold for plastic bottles. Background technique [0002] With the rapid development of plastics and their products, plastic processing and manufacturing has gradually developed into a huge industrial cluster, and almost all walks of life are using plastic products. With the continuous development of the demand for plastic parts, the methods of plastic processing are also constantly updated. Injection molding is one of the main plastic molding processing methods; the so-called injection molding is to heat thermoplastics (PC, PE, PS, PP, PVC, PA, ABS, etc.) After melting, inject it into a mold with a cooling device at a certain injection pressure, and obtain various plastic products after rapid cooling. However, simple injection molding is difficult to meet the requirements for some high-demanding beverage...

AI Technical Summary

Problems solved by technology

[0004] (1) The equipment of the traditional one-step injection stretch blowing process is mostly three-station or four-station, with many stations, a large number of molds required, large volume, complex structural design, and long manufacturing and maintenance cycles. The cost of mold development is relatively high, and it needs to be used on the matching injection stretch blow molding machine. However, the price of injection stretch blow molding machine equipment on the market is generally more expensive, and the steps in the process of producing products are more complicated, which leads to production and maintenance costs are too high;

[0005] (2) The conversion between adjacent stations requires secondary heating of the bottomed parison, which consumes a lot of energy

The cooling structure of this patent is too complicated, and the cooling structure is set in the embryonic cavity, which is prone to product quality problems

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