Five-composite rubber extrusion head

Abstract

The invention discloses a five-composite rubber extrusion head which comprises an upper die, a first upper-middle die, a second upper-middle die, a middle die, a lower-middle die and a lower die which are installed on a die base, wherein five extrusion ports which are connected with an extrusion cylinder and are arranged in a ride-back type structure are formed in the die base; and the extrusion ports which are arranged in an tilting manner are communicated with parting surface flowing chambers among the dies after die joint. The included angles among the axes and horizontal surfaces of the upper die extrusion port, the upper-middle die extrusion port, the middle die extrusion port, the lower-middle die extrusion port and the lower die extrusion port are respectively 30 degrees to 45 degrees, 10 degrees to 20 degrees, 5 degrees to -5 degrees, -10 degrees to -20 degrees, -30 degrees to -45 degrees, and preferably 34 degrees to 38 degrees, 16 degrees to 20 degrees, 2 degrees to -2 degrees, -13 degrees to -17 degrees and -33 degrees to -37 degrees; and the included angles among the parting surfaces and the horizontal surfaces of the dies and the lengths of the parting surface flowing chambers among the dies in match are also provided. The five-composite rubber extrusion head ensures the reasonable position of a linked extruder, optimizes the arrangement, and is convenient to install and maintain.

Description

Technical field [0001] The invention relates to a rubber machine, in particular to a five-compound rubber extruder head. Background technique [0002] In the existing tire production, generally speaking, most of the tread / sidewall semi-products are produced with two compound extrusion units and three compound extrusion units. There are also some high-grade tread / sidewall semi-products. Four compound extruders are used for production, but some of the treads / sidewalls produced by the two, three, and four compound extruders need to be film-laminated outside the machine. The dimensional accuracy of this kind of external bonding can no longer meet the dimensional accuracy and dynamic balance requirements of modern high-grade radial tires. Therefore, the development of a five-composite extrusion unit with more compound layers in the machine has become a high-end market demand. [0003] Five-compound rubber extruder unit changes the existing tire production in-machine compounding plus p...

AI Technical Summary

Problems solved by technology

Although there are four compound rubber extruder heads now, in order to make the structure of the five compound rubber extruder unit with one extruder more compact and the layout reasonable, the extrusion ports of the five compound rubber extruder heads The size of the horizontal inclination, the size of the horizontal inclination of the parting surface of each mold body, and the length range of each flow channel cavity still need to be redesigned, that is, an optimally designed five-composite rubber extrusion head is required

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