Die head of plastic extruding machine

Abstract

The invention discloses a die head of a plastic extruding machine, which comprises a plurality of filter cores. A bolt and a base plate are inserted into each filter core, wherein the bolt comprises a screw rod having a hollow structure of which the bottom end is provided with an opening; a nut is arranged at one end of the screw rod; the nut is lapped on the end part at the top of the filter core; a plurality of through holes communicated with the inside of the screw rod are distributed on the surface of the screw rod; each filter core comprises at least an inner filter screen and an outer filter screen and is folded along the longitudinal edges of the inner and outer filter screens into a folded cylindrical filter screen structure in the positive and negative directions respectively; the outer filter screen covers the surface of the inner filter screen; the horizontal upper and lower edges of the inner and outer filter screens are shrunk and connected to form upper and lower opening ends; the base plate is provided with mounting holes with the same number as the filter cores; and the opening ends of the screw rods are connected with the mounting holes. Because the exchange times of the die head is reduced, the energy consumption is reduced, the environment is protected, frequent start is avoided; and the production efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of plastic extruders, in particular to a die head structure of a plastic extruder. Background technique [0002] In plastic molding equipment, plastic extruder is an important part of various plastic extrusion molding production lines. It is mainly used to extrude thermoplastics such as soft and hard polyvinyl chloride and polyethylene, and corresponding auxiliary machines (including Forming machine head) can process a variety of plastic products, such as film, tube, rod, plate, wire, cable insulation layer and hollow products, etc. It can also be used for granulation to produce various plastic products. [0003] The plastic extruder includes a machine head and a mold (referred to as the die head): the machine head is composed of an alloy steel inner sleeve and a carbon steel outer sleeve, and a molding die is installed inside the machine head. For parallel linear movement, it is evenly and smoothly introdu...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the heavy structure of the die head in the prior art, power and energy consumption, poor filtering effect and easy clogging of the filter screen due to the small expansion area, frequent replacement and cleaning of the filter screen, frequent shutdown, resulting in energy loss and low work efficiency. Technical problem, to provide a plastic extruder die head that reduces energy consumption, avoids frequent shutdowns, and has a good filtering effect

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