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Rubber dynamic extrusion molding device and method

An extrusion molding and rubber technology, applied in the field of rubber processing, can solve the problems of poor rubber fluidity and difficulty in molding, and achieve the effects of decreasing flow resistance, decreasing extrusion pressure, and changing relaxation time.

Active Publication Date: 2017-09-26
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of poor rubber fluidity and difficult molding in the prior art, the present invention provides a rubber dynamic extrusion molding device and method

Method used

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  • Rubber dynamic extrusion molding device and method
  • Rubber dynamic extrusion molding device and method
  • Rubber dynamic extrusion molding device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025]A rubber dynamic extrusion molding device, including a rubber cold feed extruder 6, a slip ring 7, a vibrating sleeve 3, a vibrating connecting plate 2, a die 11, a vibrating system 1 and a guiding mechanism 4, wherein the vibrating system 1 Connected with the vibration connection plate 2, the die 11 is fixedly installed on the vibration connection plate 2, the vibration sleeve 3 has a cavity in the middle, and a hollow channel is opened in the slip ring 7, and one end of the slip ring 7 is fed with the rubber cold through the connection ring 5 The screw extruder 6 is fixedly connected, and a first flange 12 is provided on the circumference of the other end, and a second flange 13 is provided on the outer circumference. The size of the gap is 0.03mm, the elastic ring 8 is installed on the second flange 13, the thickness of the elastic ring is 15-18mm, the elastic ring 8 is in contact with the front end face of the vibration sleeve 3, and the first flange 12 is opened Gro...

Embodiment 2

[0027] (1) 70 parts by weight of raw rubber TSR20 and 30 parts by weight of raw rubber BR9000, 2 parts by weight of raw rubber small material SAD, 4 parts by weight of ZnO and 1 part by weight of 4010NA, 40 parts by weight of carbon black N375, 25 Aromatic hydrocarbon oil in parts by weight, carbon black remaining 20 parts by weight are heated and mixed in the internal mixer to make it uniform, the heating temperature is 100-120 ° C, the mixing time is ≤ 9min, and then 1.8 parts by weight are added to the open mixer Additive S and 0.9 parts by weight of CZ, continue mixing, the total mixing time ≤ 20min, and park the mixed rubber for at least 24h;

[0028] (2) The temperature of the feeding section, plasticizing section and extrusion section of the rubber cold-feeding screw extruder is controlled at 50°C, 65°C and 75°C in sequence, the screw temperature is set at 80°C, and the head section is set at 85°C. Start the rubber cold-feed screw extruder, put the rubber compound glue ...

Embodiment 3

[0031] (1) 70 parts by weight of raw rubber TSR20 and 30 parts by weight of raw rubber BR9000, 2 parts by weight of raw rubber small material SAD, 4 parts by weight of ZnO and 1 part by weight of 4010NA, 40 parts by weight of carbon black N375, 25 Aromatic hydrocarbon oil in parts by weight, carbon black remaining 20 parts by weight are heated and mixed in the internal mixer to make it uniform, the heating temperature is 100-120 ° C, the mixing time is ≤ 9min, and then 1.8 parts by weight are added to the open mixer Additive S and 0.9 parts by weight of CZ, continue mixing, the total mixing time ≤ 20min, and park the mixed rubber for at least 24h;

[0032] (2) The temperature of the feeding section, plasticizing section and extrusion section of the rubber cold-feeding screw extruder is controlled at 50°C, 65°C and 75°C in sequence, the screw temperature is set at 80°C, and the head section is set at 85°C. Start the rubber cold-feeding screw extruder, put the rubber compound gl...

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Abstract

The invention relates to the technical field of rubber processing, and discloses a rubber dynamic extrusion molding device and method. The device comprises a rubber cold feeding extruding machine, a slide ring, a vibration sleeve, a vibration connecting plate, a mouth model and a vibration system. According to the method, the vibration system provides axial vibration force in the position of an extruding machine head, the axial vibration force and extruding shear force are superposed, so that a vibration field is applied to rubber materials in the main shear direction. By adoption of the device and method, the rubber can be extruded dynamically, in addition, the extruding pressure and energy consumption can be reduced, and rubber molded products with high quality are obtained.

Description

technical field [0001] The invention relates to the technical field of rubber processing, in particular to a rubber dynamic extrusion molding device and method. Background technique [0002] The rubber extrusion molding method in the prior art is to carry out static extrusion under the stable extrusion pressure provided by the screw. Due to the long molecular chain of rubber, good flexibility, obvious strain stress relaxation, and the influence of elastic recovery on fluidity, it will cause viscosity High, the obvious disadvantage of poor fluidity, in order to promote its flow, it is necessary to increase the pressure during extrusion, or appropriately increase the temperature of the feeding section, plasticizing section, extrusion section and machine head. The increase of extrusion pressure puts forward higher requirements for strength, rigidity and power of the equipment, and the increase of temperature puts forward higher requirements for the heating medium, and too high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/58B29C48/50
CPCB29C48/50
Inventor 边慧光焦冬梅汪传生
Owner QINGDAO UNIV OF SCI & TECH
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