CN100443278C

CN100443278C - Tyre mould and its producing method

Info

Publication number: CN100443278C
Application number: CNB2004100543108A
Authority: CN
Inventors: 鲍忠林
Original assignee: JUNXIANG MACHINE MOULD CO Ltd XIANGSHAN CITY
Current assignee: JUNXIANG MACHINE MOULD CO Ltd XIANGSHAN CITY
Priority date: 2004-09-01
Filing date: 2004-09-01
Publication date: 2008-12-17
Anticipated expiration: 2024-09-01
Also published as: CN1586858A

Abstract

The present invention relates to a tyre mould and a producing method thereof, particularly to a two half mould and a segmented mould for producing radial tyres for cars, bias angle tyres, engineering tyres and motorcycle tyres. The present invention adopts the technical scheme that the tyre mould is designed into a modular structure according to the forming rules of pattern units 'P' of a tyre tread; namely that a module comprises all contents of a 'P'; only a plurality of P unit modules are manufactured; a set of complete mould pattern type cavity can be assembled. The tyre mould and a producing method thereof of the present invention can be suitable for manufacturing tyre moulds producing various tyres; because of the modular structure, the manufacturing procedures of the tyre mould is simple, and the production period is short, the manufacture precision of each module modular is easy to control, the integral precision of the mould after assembled is high, and the qualified rate of produced completed products is high.

Description

Tire-mold and manufacture method thereof

Technical field

The present invention relates to make the technical field of mold of rubber tyre, be specifically related to comprise that production car radial-ply tyre, Dou hand over tire, engineering tire, two half modules of cycle tyre, the modularization manufacture method of segmented mold.

Background technology

The tire-mold manufacturing process of China's use at present roughly has three kinds, the one, the gypsum mould precision casting technology needs in its technological process through operations such as basic mode processing, cast silicon rubber counter-rotating mould, pouring gypsum core mould, the splicing of gypsum pattern, air dry, baking, aluminium alloy cast moldings; Production cycle is long, makes the mold integral precision low through multiple working procedure, and product qualified rate is low; The 2nd, electric spark galvanic corrosion technology exist long defective of production cycle equally, and processing cost is too high; The 3rd, applique, weldering flower process, this technology only is confined on mould the simple case decorative pattern of processing, and the positional precision of its corolla, paste weldering intensity, the finishing of weldering slope all have problems, is difficult to obtain the effect of satisfaction.

Summary of the invention

The objective of the invention is in order to reduce the defective of prior art, a kind of new mentality of designing and manufacturing process that is different from above-mentioned three kinds of technologies fully is provided, can be fit to produce the tire-mold and the manufacture method thereof of various tires, make tire-mold manufacturing process simple, with short production cycle, the precision height, the product qualified rate height of production.

For achieving the above object, analyze the structural element and the component law of tire tread pattern first.

A tire of any model specification, all equal or unequal and whole tire tread is formed in several identical decorative pattern unit of shape by physical dimension, this decorative pattern unit is referred to as " P ", tire for some different size model and different brackets, on the diverse location of its tyre surface, the physical dimension of " P " is also different, and as the radial-ply tyre of car, generally " P " by 2-6 unequal number amount different size forms the whole circumference tyre surface; Then form the whole circumference tyre surface for bogie oblique tire by " P " of a plurality of same sizes; The technical solution used in the present invention is the component law according to above-mentioned decorative pattern unit " P ", tire-mold is designed to modular construction, promptly module comprises all the elements of " P ", the bogie oblique tire of forming the whole circumference tyre surface like this for " P " by a plurality of same sizes promptly can be assembled into one pair of complete mould decorative pattern die cavity as long as make " P " of a plurality of same sizes; For the radial-ply tyre mould of car, only increase the module " P " of different size equally, promptly can be assembled into one pair of complete radial-ply tyre mould decorative pattern die cavity.

Owing to adopted technique scheme, tire-mold of the present invention and manufacture method thereof, can be fit to produce the mould manufacturing of various tires, modular construction makes tire-mold manufacturing process simple, with short production cycle, the making precision of each module is controlled easily, the mold integral precision height after the assembling, the product qualified rate height of production.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

The tyre tread expanded view that Fig. 1 forms for different size P.

Fig. 2 is the P unit figure after cutting apart.

Fig. 3 is a P modular structure schematic diagram of the present invention.

Fig. 4 is that the A of Fig. 3 is to view.

Fig. 5 is car radial-ply tyre two half module P module forming die structure for moulding schematic diagrames.

Fig. 6 is a car radial-ply tyre segmented mold P module forming die structure for moulding schematic diagram.

Fig. 7 is two half module installation diagrams.

Fig. 8 is the A-A cutaway view Amplified image of Fig. 7.

Fig. 9 is the segmented mold installation diagram.

Figure 10 is that the K of Fig. 9 is to view.

Among the figure: 1, cut-off rule, 2, the P unit of tire tread, 3, locating slot, 4, two half module module die cavities, 5, the quiet mould of two half module modules, 6, the dynamic model of two half module modules, 7, the push rod of two half module modules, top board, 8, segmented mold module die cavity, 9, the quiet mould of segmented mold module, 10, the dynamic model of segmented mold module, 11, the push rod of segmented mold module, top board, 12, pressure ring, 13, parabolic, 14, conical overcoat, 15, conical segmentation slide block, 16, pressure ring, 17, the P unit module of segmented mold, 18, segmentation is framed, and 19, framed, 20, the P unit module of two half modules.

The specific embodiment

Embodiment 1

Step 1, decomposed P unit:, tire tread is launched by attached illustrated in figures 1 and 2, tread contour can resolve into by forming as if a P unit, and each P unit 2 width dimensions has difference, but geometry is identical, for avoiding the decorative pattern steel disc to overlap with cut-off rule, cut-off rule 1 is cut apart along the corolla edge;

Step 2, system P unit module: see shown in Figure 5ly, make the dynamic model 6 of two half module modules according to P unit tread contour, and quiet mould 5 with matching, form die cavity 4 behind the matched moulds, push rod top board 7 is set on the dynamic model, aluminum alloy materials is 4 compression mouldings in die cavity;

The two half module P unit modules of making are seen Fig. 3 and shown in Figure 4, and its thickness is 25mm, and radially is an angle [alpha] along thickness, for guaranteeing the combination rigging position precision of P module, are provided with locating slot 3 in P unit module end;

Step 3, assembling: see Fig. 7 and shown in Figure 8, the two half module P unit modules 20 that step 2 is made are combined into full circle, closely be pressed into through heating framed 19 in, module is parabola 13 with framed mating surface, so that module and framed easy assembling are press-fitted; With make another half module with quadrat method, become upper and lower mould, each compresses with pressure ring 12, and finish turning upper and lower mould mating surface merges upper and lower mould then, forms the tire tread type cavity mould by the combination of P unit module; For guaranteeing that tyre surface does not stay module Mosaic face seam vestige, available crocus cloth or fine oil stone polishing seam burr make it smooth smooth.

Embodiment 2

In the step 2 of embodiment 1, change the material of putting into die cavity 4, adopt powdered metallurgical material extrusion modling in die cavity, make the P unit module through sintering, all the other repeat embodiment 1; The THICKNESS CONTROL of its P unit module is between 10-15mm.

Embodiment 3

Repeating step 1;

Step 2, system P unit module: see shown in Figure 5, make the dynamic model 10 of segmented mold module according to P unit tread contour, and quiet mould 9 with matching, form die cavity 8 behind the matched moulds, push rod top board 11 is set on the dynamic model, and powdered metallurgical material is extrusion modling in die cavity, is segmented mold P unit module through sintering;

Segmented mold P unit module, its THICKNESS CONTROL and radially are an angle [alpha] along thickness between 10-15mm, for guaranteeing the combination rigging position precision of P module, be provided with locating slot 3 in the P module ends;

Step 3, assembling: see Fig. 9 and shown in Figure 10, have one to be divided into 1.--the 9. segmentation framed 18 of section, the segmented mold P unit module 17 that step 2 grid are got puts in order by tire tread pattern and packs in the segmentation framed 18, pressurize to framed two ends with specific purpose tool, compress pressure ring 16, reinforce by bolt again; With adorning conical segmentation slide block 15 outward with quadrat method, conical segmentation slide block puts conical overcoat 14 outward.

Embodiment 4

In the step 2 of embodiment 3, change the material of putting into die cavity 4, adopt the extrusion modling in die cavity of aluminium alloy gold copper-base alloy, make segmented mold P unit module, all the other repeat embodiment 3; The thickness of its P unit module is 25mm.

Claims

1, a kind of manufacture method of tire-mold is characterized in that: adopt modularized design mfg. moulding die decorative pattern die cavity, it is made up of the following step:

Step 1, the decomposed P unit: tire tread is launched, and tread contour can resolve into by forming as if a P unit, and each P unit (2) width dimensions has difference, but geometry is identical, and cut-off rule (1) is cut apart along the corolla edge;

Step 2, system P unit module: make dynamic model (6,10) according to P unit tread contour, and quiet mould with matching (5,9), form die cavity (4,8) behind the matched moulds, push rod top board (7,11) is set, the extrusion modling in die cavity of system P unit module material on the dynamic model;

Step 3, assembling: with the P unit module (20,17) that step 2 makes, in pack into framed (19) or the segmentation framed (18), compress pressure ring (12,16), can be assembled into tire-mold decorative pattern die cavity.

2, the manufacture method of a kind of tire-mold according to claim 1 is characterized in that: said system P unit module material is an aluminum alloy materials, and its thickness is 25mm.

3, the manufacture method of a kind of tire-mold according to claim 1 is characterized in that: said system P unit module material is a powdered metallurgical material, and by the formed body that powdered metallurgical material makes, through sintering the P unit module into, its thickness is 10-15mm.