Radial extruding forming device of cut-fiber reinforcement rubber composite material

Abstract

The invention relates to a radial extrusion molding device for the composite material of short fiber reinforced rubber, in particular to a device for realizing the radial direction of short fiber in rubber material. Eight threaded holes are produced on the front side of the flange of the device, eight double threaded screws and nuts are used for connecting the flange, a flow channel plate, a blocking supporting plate, a shaping plate and a machine head pressing plate into a whole in sequence, a rubber overflow valve is installed above the flange, and a threaded hole is drilled under the flange to install a pressure sensor; a pair of blocking adjusting blocks is positioned in the middle of the blocking supporting plate, one end of a blocking adjusting bolt is fixed with the blocking adjusting blocks, the other end thereof is connected with the blocking supporting plate through thread, and the blocking adjusting bolt is used for controlling the blocking gap; a pair of shaping adjusting blocks is positioned in the middle of the shaping plate to adjust the shaping gap, the shaping adjusting blocks are clamped between the blocking supporting plate and the machine head pressing plate and fixed through screws. The device has the advantages of simple structure, reliable principle, broad application range, low cost, good production efficiency, high product quality and stable performance.

Description

Technical field: [0001] The invention relates to a radial orientation extrusion molding device for short fiber reinforced rubber composite materials, in particular to a continuous extrusion molding of short fiber reinforced rubber which realizes radial orientation extrusion molding of short fibers in rubber materials during the extrusion process installation. Background technique: [0002] Short fiber-rubber composites are one of the ideal materials for preparing high-performance tires. Studies have found that adding short fibers to the rubber compound can significantly reduce the rolling resistance, wet skid resistance and hysteresis loss of the tire, and improve the tear resistance and chipping resistance of the tread, which can reduce the weight of the tire and make the tire more durable. Driving noise is reduced. If the short fibers are radially oriented in the rubber compound, the overall rigidity of the tire can be improved, and the balance handling, ride comfort and...

AI Technical Summary

Problems solved by technology

How to orient the short fibers in the radial direction, many researchers at home and abroad have carried out extensive research. At present, the main solutions and the devices used are: first, the short fibers extruded by the common head are used to orient the rubber in the circumferential direction. , punched into the cross-sectional shape of the tread, and then spliced ​​to the required tread length piece by piece. This method is very inefficient and is only suitable for experimental research. It cannot be applied to actual production at present; the second is to change the machine head and The die structure device directly extrudes the short fiber radially oriented rubber tube, then cuts it longitudinally, and then cuts it according to the width required by the part along the extrusion direction. However, the method and device are used in tire production, but there are many difficulties

Because the tire tread is a product with a certain shape and specifications, if the rubber tube is extruded, it must be cut and spliced ​​again. The operation is cumbersome, the production efficiency is low, and it will also affect the tire building process.

If the tread is directly extruded, the mouth size must be equivalent to the outer diameter of the tire. The mouth shape is huge, and the size of the extruder is huge, which brings great difficulties to mechanical manufacturing and is almost difficult to achieve. In addition, the composite tread Production is even more impossible to achieve

To sum up, the existing equipment and devices have outstanding shortcomings such as complex structure, cumbersome production process, high equipment cost, and difficulty in achieving ideal physical and chemical properties of the products produced.

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