Device for producing polystyrene pipeline

Abstract

The invention discloses a device for producing a polystyrene pipeline. The device comprises an injection head and an injection molding material tank arranged below the injection head. The bottom of the injection head is provided with a pressure injection plate. The bottom of the injection molding material tank is provided with a discharging opening. The discharging opening is installed on a base. The inner diameter of the injection molding material tank is phi (m). The wall thickness of the injection molding material tank is A (m). The diameter of the pressure injection plate is from phi+A*0.5 / 100 to phi+A*1 / 100. Because the fit dimensions between the injection head and the injection molding material tank are improved, the seal performance can be improved, and the work performance is safer and more reliable.

Description

technical field [0001] The invention relates to a plastic pipe forming device, in particular to a device for producing polystyrene (PS) pipes. Background technique [0002] Traditional plastic molding machines generally use the screw to push the piston to form the plastic in the barrel in the mold. The biggest disadvantage of this type of molding machine is that it can only process workpieces less than 30kg in a mold at a time, and cannot process larger plastic products. Secondly, the equipment is expensive. [0003] In order to produce plastic products over 30kg, some companies adopt the design idea that the outer diameter of the injection piston is larger than the inner diameter of the plastic injection cylinder (patent application number is 200310111313.6), thereby expanding the capacity of the material cylinder and injection pressure, and can process 30-500kg of materials at a time Large workpieces are formed in the mold. However, due to the poor fluidity and slow flow...

AI Technical Summary

Problems solved by technology

The biggest disadvantage of this type of molding machine is that it can only process workpieces less than 30kg in a mold at a time, and cannot process larger plastic products. Secondly, the equipment is expensive.

However, due to the poor fluidity and slow flow rate of the polystyrene (PS) raw material itself, the outer diameter of the injection piston of this patent is larger than the fixed design value (0.3mm-0.6mm) of the inner diameter of the injection cylinder. The problem of mismatching will appear when it is used, which will easily cause the material to turn over or get stuck, making it difficult to guarantee the quality of the pipe.

What's more, the raw material cannot continue to flow at the end of the mold cavity because the required temperature has not been reached, resulting in the production of waste pipes that are not filled with the mold cavity, resulting in a low yield

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