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Pressure injection method for integral forming of non-pneumatic tire

A non-pneumatic tire, integral molding technology, applied in the field of tire production technology, can solve problems such as uneven tire pressure, uneven tire dynamic balance, shortened tire service life, etc. Yield and quality effects

Inactive Publication Date: 2016-05-25
GUANGZHOU NEDONG INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another example is the Chinese patent application number 20071002383.X. Although the disclosed air-free tire does not distinguish between inner and outer tires, the inside of the tire is a hole structure, and the holes are distributed in different places inside the tire. Such a structure causes uneven pressure on the tire. , so that the tires have different stress points, resulting in uneven dynamic balance of the tires, the user will feel bumps, and the comfort is not good
The holes inside the tire will collapse with the prolongation of the use time and under the action of pressure, thus shortening the service life of the tire

Method used

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  • Pressure injection method for integral forming of non-pneumatic tire

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Put the prepared non-inflatable tire manufacturing raw materials into the funnel box, and use a stirring rod to stir evenly; preheat the injection machine to 180°C, so that the injection machine can fully dissolve the material, enhance the consistency of product density, and enhance the durability of the product. Aging performance, the aging resistance of the product is better at this temperature; increase the pressure of the injection machine to 50Pa to ensure that the injection machine has enough pressure to push the material into the mold; adjust the feeding speed to 10m / s to ensure that the material advances at a uniform speed , the softness and hardness of the product are uniform; adjust the holding time, the holding time is divided into three sections, each holding time is 42s, after these three sections of holding pressure, the tensile strength and elasticity of the product are greatly improved; the non-inflatable tire Manufacturing raw materials are injected into...

Embodiment 2

[0035] Put the prepared non-inflatable tire manufacturing raw materials into the funnel box, and use the stirring rod to stir evenly; preheat the injection machine to 185°C, so that the injection machine can fully dissolve the materials, ensure the consistency of product density, and enhance the durability of the product. Aging performance; increase the pressure of the injection machine to 55Pa, so that the injection machine has enough pressure to push the material into the mold; adjust the feeding speed to 15m / s to ensure that the material advances at a uniform speed, and ensure that the softness and hardness of the produced product are uniform state; adjust the holding time, the holding time is divided into three sections, each holding time is 42s, after these three sections, the tensile strength and elasticity of the product are greatly improved; the raw materials for non-inflatable tires are injected into the pressure injection Machine, adjust the injection machine to autom...

Embodiment 3

[0038] Put the prepared non-inflatable tire manufacturing raw materials into the funnel box, and use a stirring rod to stir evenly; preheat the injection machine to 190°C, so that the injection machine can fully dissolve the materials, ensure the consistency of the product density, and enhance the product Aging resistance; increase the pressure of the injection machine to 60Pa to ensure that the injection machine has enough pressure to push the material into the mold; adjust the feeding speed to 20m / s to ensure that the material advances at a uniform speed, so that the hardness of the product is uniform; adjust Pressure holding time, the pressure holding time is divided into three sections, each section of pressure holding time is 42s, after these three sections of pressure holding, the tensile strength and elasticity of the product are greatly improved; the raw materials for non-inflatable tires are injected into the injection machine, and the adjustment The injection machine ...

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Abstract

The invention provides a pressure injection method for integral forming of a non-pneumatic tire. The method includes the following steps that firstly, configured raw materials for manufacturing the non-pneumatic tire are placed into a material storage box and are evenly stirred; secondly, the temperature of a pre-heating pressure injection machine is raised to 180-190 DEG C; thirdly, pressure of the pre-heating pressure injection machine is increased to 50-60 Pa; fourthly, the material inflow speed is adjusted to 10-20 m / s; fifthly, the pressure holding time is adjusted to 2-3 min; sixthly, the raw materials for manufacturing the non-pneumatic tire in the first step are injected into the pressure injection machine, and operation is started according to a preset mode; seventhly, after mold assembly, injection, hot melting, cooling and mold disassembly are sequentially performed, the non-pneumatic tire is obtained. The technology is simple, multi-time machining is not needed, one-time forming is achieved, operation is convenient, and cost is low; the obtained non-pneumatic tire is uniform and reasonable in structure and is not divided into an inner tire and an outer tire, friction force and resistance between the inner tire and the outer tire are eliminated, dynamic balance is good, and the non-pneumatic tire is resistant to abrasion and rolling and durable.

Description

technical field [0001] The invention relates to a tire production process, in particular to an injection method for integrally forming an air-free tire. Background technique [0002] At present, the existing non-pneumatic tire production process is relatively complicated, the process is carried out step by step, the operation time is long, the cost is high, and the service life of the tire is short. Existing tire great majority can add filler inside, as name is called a kind of Chinese patent 00241097.4 of air-free tire, and this tire has inner and outer tire two-layer structure. This non-inflatable tire needs to be filled with fillers in the inner layer, which is formed through reprocessing. During use, the inner and outer tires rub against each other, which reduces the service life of the tire. Another example is the Chinese patent application number 20071002383.X. Although the disclosed air-free tire does not distinguish between inner and outer tires, the inside of the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/00B29L30/00
CPCB29C45/00B29L2030/006
Inventor 张春如孙智勇
Owner GUANGZHOU NEDONG INFORMATION TECH
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