Plastic pipe extrusion molding equipment and control method thereof

Abstract

The invention discloses plastic pipe extrusion molding equipment and a control method thereof. The plastic pipe extrusion molding equipment comprises an extrusion device and a forming die, and furthercomprises a speed detection device and a flow speed control device, wherein the extrusion device melts and extrudes plastic particles; the forming die is connected with a discharge port of the extrusion device through a first conveying pipe so as to extrude an inflowing molten material through a die head in the forming die and form plastic pipe parisons, and the plastic pipe parisons are segmented by an automatic cutting device in unit time; the speed detection device is used for detecting the discharging speed of the die head of the forming die in real time; and the flow speed control deviceis connected with a branch port of the first conveying pipe so as to divide or converge the molten materials flowing out of the discharge port of the extrusion device and further adjust the dischargespeed of the forming die head. According to the extrusion molding equipment, the output speed of the extruded plastic pipe parisons can be correspondingly adjusted and controlled, so that the lengthof the plastic pipe parison extruded in each period is uniform, the meter weight is similar, the material waste is reduced, and the defective rate of finished products is reduced.

Description

technical field [0001] The invention belongs to the technical field of plastic extrusion, and in particular relates to a plastic pipe extrusion molding equipment and a control method thereof. Background technique [0002] The extrusion molding of plastic products is a relatively mature molding process in plastic processing. The method of this process is to add powdery or granular plastic resin raw materials into the barrel of the extruder, and under the rotation and push of the screw, the The raw materials are melted and plasticized under high temperature and high pressure conditions, and then the molten material is pushed into the mold of the machine head by the continuously rotating screw, extruded from the mold of the machine head to form plastic products, and then shaped and cut to make the required specifications. product. [0003] Extrusion molding equipment generally includes an extruder and ancillary setting machines and cutting machines. There are many combinations...

AI Technical Summary

Problems solved by technology

[0004] For the production of plastic pipes, it needs to be cut into a specific length after extrusion molding for processing, use and transportation. etc.), these fluctuations will affect the extrusion speed of the plastic pipe, which will cause the length of the extruded plastic pipe to vary in unit time. If the length of the extruded plastic pipe is much larger than the required If the length of the plastic pipe is too long, the proportion of waste will be too large after cutting; if the length of the extruded plastic pipe is less than the length of the required plastic pipe, the cut plastic pipe will Can not meet the length requirements, and become a defective product

Images