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In-mold foam vulcanization molding rubber tire with double density and its manufacturing process

A rubber tire, vulcanization molding technology, applied to tire parts, tires, non-pneumatic tires, etc., can solve the problems of insufficient elasticity, high cost, and energy consumption of rubber tires, and achieve the elimination of transportation costs, low energy consumption, and increased elasticity effect of effect

Active Publication Date: 2020-11-13
东营睿港招商服务有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the problems of insufficient rubber tire elasticity, separate injection, foaming and vulcanization of double-density tires in the prior art, energy consumption, time-consuming and high cost problems, the present invention provides a foaming and vulcanization molding rubber in a double-density molding mold Tires and their manufacturing process

Method used

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  • In-mold foam vulcanization molding rubber tire with double density and its manufacturing process
  • In-mold foam vulcanization molding rubber tire with double density and its manufacturing process
  • In-mold foam vulcanization molding rubber tire with double density and its manufacturing process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The foam vulcanization molded rubber tire in the double-density forming mold of the present embodiment, such as figure 1 , 2 As shown, it includes a high-density outer layer 61 and a low-density inner layer 62, which is an integrated structure that is released from the same mold; the materials of the high-density outer layer 61 and the low-density inner layer 62 are high-density rubber and low-density rubber respectively. The low-density rubber is made by adding a foaming agent to the high-density rubber after foaming, and the double-density injection in-mold foaming production system is used to complete the double-density rubber injection, foaming and vulcanization processes in one mold. Effectively avoid the circulation of products in each process, thereby reducing production costs. The density ratio of the high-density outer layer 61 and the low-density inner layer 62 can be 2:1, wherein the density of the high-density outer layer 61 is 1000kg / m 3 .

Embodiment 2

[0058] The basic structure of the double-density molding in-mold foam vulcanization rubber tire of this embodiment is the same as that of Embodiment 1, and the improvements are as follows: figure 1 , 2As shown, the low-density inner layer 62 is also buried with an annular spring support 63, which acts as a skeleton support. The spring elasticity can be selected to be consistent with the elasticity of the low-density rubber, so as to strengthen the support strength of the low-density inner layer 62 and slow down the low-density Elastic attenuation caused by frequent deformation of the inner layer 62 . The double-density injection in-mold foam molding production system includes an injection machine base 1, a compression molding vulcanization base 5, an injection device 2 fixed on both, a compression molding and foaming vulcanization device 3, and a compression molding vulcanization base 5 The mold exhaust and inflation mechanism 4 on the side. The compression molding and foamin...

Embodiment 3

[0060] The basic structure of the dual-density molding production system of the double-density molding in-mold foaming vulcanization molding rubber tire used to produce rubber tires in this embodiment is the same as that of Embodiment 2, and the improvements are as follows: image 3 As shown, the injection device 2 in the double-density injection in-mold foam molding production system includes a hopper 21, an injection cylinder 22, a plasticizing injection screw barrel 23, an injection seat moving cylinder 24, a pre-injection chamber 25, a rubber plastic chemical machine 26, material switching oil cylinder 27, injection head 28 and material switching switching valve 29; the feeding hopper 21 communicates with the beginning of the plasticizing injection screw barrel 23, and the plasticizing injection screw barrel 23 is fixed on the end of the injection oil cylinder 22 side; the plasticizing injection screw barrel 23 and the discharge port of the rubber plasticizing machine 26 co...

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Abstract

The invention discloses a double density forming die internal foaming vulcanization forming rubber tire and a manufacturing process thereof, and belongs to the technical field of rubber tire products.The forming rubber tire comprises a high density outer layer and a low density inner layer, and is of an integrated structure of same die out. Textures of the high density outer layer and the low density inner layer are separately high density rubber and low density rubber, the low density rubber is obtained after a foaming agent is added into the high density rubber, annular spring support can be embedded into the low density inner layer and plays a framework supporting role, the elasticity of a spring can be selected to be consistent with the elasticity of low density rubber to enhance thesupporting strength of the low density inner layer, a double density injection die internal foaming forming production system is applied to a die for completing double density sizing material injection, foaming and vulcanization process, and transferring of the products in the processes is effectively avoided. The problems that the elasticity of the rubber tire is insufficient, double density tireinjection, foaming and vulcanization are carried out separately, energy and time are consumed, and the cost is high are solved.

Description

technical field [0001] The invention belongs to the technical field of rubber tire products, and in particular relates to a rubber tire foamed and vulcanized in a double-density molding mold and a manufacturing process thereof. Background technique [0002] Tires are one of the important components of a car. Its main function is to support the quality of the car, bear the load of the car, transmit traction and braking torque, and ensure the adhesion between the wheel and the road; reduce and absorb the vibration and impact of the car when it is running, and prevent the car from zero damage. The components are subject to severe vibration and early damage, adapt to the high-speed performance of the car and reduce the noise during driving, ensuring the driving safety, handling stability, comfort and energy-saving economy of the car. [0003] According to the requirements, the rubber tire must not only ensure its strength and wear resistance, but also ensure its elasticity. In o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D30/08B60C7/10
CPCB29D30/08B60C7/10
Inventor 葛九敢叶孙勇唐帆黎广周俊路丽珠陶克军孙岳红时守超葛磊
Owner 东营睿港招商服务有限责任公司
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