Rubber tube extruder head of rubber and plastic extruder without need of eccentric adjustment

Abstract

The invention discloses a rubber tube extruder head of a rubber and plastic extruder without the need of eccentric adjustment, which comprises a machine body (1), a flow channel body (2), a machine head seat (3), a machine head gland (4), a core pattern seat (5), a core pattern (6), a mouth pattern seat (7), a mouth pattern (8), a mouth pattern gland (9), a mouth pattern electric heating ring (10) and a snap-gauge (11). The mouth pattern and the mouth pattern seat as well as the mouth pattern seat and the mouth pattern gland are integrally connected through precise concentric static cooperation, the core pattern seat and the flow channel body are in transitional fit, the machine body and the flow channel body are in conical surface centripetal fit, and simultaneously the mouth pattern gland is provided with the mouth pattern electric heating ring. Concentricity drifting is avoided through precise fit, and the heating of the mouth pattern electric heating ring is controlled to avoid the risk of overpressure, so labor, time and materials are saved, the production efficiency is improved, the qualification rate is increased and hidden overpressure danger is eliminated in rubber tube extrusion production.

Description

technical field [0001] The invention relates to a head of a rubber and plastic extruder, in particular to a rubber hose extruder that is applied to a rubber and plastic extruder and used for extruding a rubber hose without adjusting the eccentricity head. Background technique [0002] The head of the rubber and plastic extruder is an important part of the extruder. The head is installed at the outlet end of the extruder barrel and cooperates with the extrusion screw; the rubber is heated, plasticized and compressed in the extruder barrel through the rotation of the screw. , forming an elastic fluid that is easy to flow and shape, and finally forms an extruded product through a die. [0003] In order to ensure the uniformity of the wall thickness of the extruded rubber hose in the prior art, four adjusting screws are evenly distributed on the circumference of the eccentric seat of the machine head to adjust the concentricity between the mouth shape and the core shape. When ...

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Problems solved by technology

[0003] In order to ensure the uniformity of the wall thickness of the extruded rubber hose in the prior art, four adjusting screws are evenly distributed on the circumference of the eccentric seat of the machine head to adjust the concentricity between the mouth shape and the core shape. When extruding out of the machine, according to the deviation of the wall thickness of the extruded hose, the eccentricity of the mouth shape is corrected manually by adjusting the screw; Loose screws will lead to changes in concentricity, so it is necessary for operators to monitor and correct in time; eccentricity is difficult to adjust and requires skilled manual operation, otherwise it will be difficult to control eccentricity, or symmetric eccentricity, uneven wall thickness, etc. phenomenon, resulting in the outflow of defective products, wasting materials and affecting the production beat;

[0004] In addition, when extruding products of different materials, it is necessary to readjust the eccentricity, which is labor-consuming, time-consuming, wastes materials, and increases costs; in addition, the temperature of the die is heated by the head of the extruder for temperature transmission, and the temperature transmission is slow and inefficient. Uniformity affects the extrusion size and appearance of the product, and there is also a hidden danger of overpressure; therefore, the existing technology has the problems of easy drift of concentricity, time-consuming adjustment of eccentricity, waste of materials, low production efficiency, prone to defective products and hidden dangers of overpressure Problems and deficiencies

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