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Capsule body of tire building capsule and preparation method thereof

A technology of tire forming and manufacturing method, applied in the field of tire forming, can solve the problems of insufficient tightening force, difference in direction of bonding force between bladder rubber and anti-adhesive cloth, and inability to guarantee it.

Active Publication Date: 2019-04-05
ZHONGCE RUBBER GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The difference in winding density and angle will cause the difference in the direction of the bonding force between the capsule rubber and the anti-adhesive cloth; the tightness and uniformity of the winding will cause the difference in the bonding force between the capsule and the anti-adhesive cloth
In the case of fully manual operation, none of the above four elements can be guaranteed
The result of manual mass production is that the quality of the capsule will inevitably fluctuate, and the tightening force produced by the vulcanization of the water-wrapped cloth is insufficient, resulting in insufficient bonding strength between the rubber material and the anti-sticking cloth, resulting in early damage such as easy skin breakage
In addition, when the finished capsule is installed on the tooling, the outer capsule and the first reverse capsule need to be folded once. The characteristics of the rubber product will produce arching under bending, which will inevitably cause a big butt problem.

Method used

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  • Capsule body of tire building capsule and preparation method thereof
  • Capsule body of tire building capsule and preparation method thereof
  • Capsule body of tire building capsule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 Capsule

[0031] Such as figure 1 The capsule body of a tire building bladder is shown, the capsule body includes an outer capsule body 1 integrally vulcanized, a first reverse bladder body 2 and a second reverse bladder body 3, the first reverse bladder body 2 and the second reverse bladder body The two reverse capsules 3 are respectively connected to the two ends of the outer capsule 1 and folded back into the capsule. The capsule body is composed of an outer rubber layer 11, a reinforcing skeleton layer 12 and an inner rubber layer 13, and an anti-adhesive cloth 14 is arranged on the outer surface of the outer capsule body 1, and the two ends of the anti-adhesive cloth 14 are turned up to the first turned-up bag The inner surface of the body 2 and the second turned-back capsule body 3 , the outer capsule body 1 and the turn-back area of ​​the first turned-back capsule body 2 are provided with a reinforcing glue layer 15 . The outer annular surface of the ...

Embodiment 2

[0032] Embodiment 2 Forming mold

[0033] Such as image 3 The molding die shown includes a first bladder 31 , a second bladder 32 , a pressure ring 33 and a back cover 34 . A connecting sleeve 35 is connected between the first bladder 31 and the second bladder 32 , and the connecting sleeve 35 is used for connecting the rotating shaft. Fastening screws 36 are arranged on the connecting sleeve 35 . The left end of the first bag tube 31 is provided with the first slit convex ring 37, and the right end is provided with the connecting convex ring 38, and the first bag tube 31 and the second bag tube 32 are connected to each other by connecting the convex ring 38, and the second bag tube 32 right-hand ends are provided with the second sub-mouth protruding ring 39, and described pressing ring 33 is fixedly arranged in the annular groove that the second sub-mouth protruding ring 39 forms, and the outer ring of pressing ring 33 and the inner part of the second sub-mouth protruding r...

Embodiment 3

[0034] Embodiment 3 vulcanization mold

[0035] Such as Figure 4 The vulcanization mold shown includes a first bladder 31 , a third bladder 42 , an external bladder 43 , a bottom cover 44 and an upper cover 45 . The first capsule 31 is the same as the first capsule 31 of Embodiment 1, the outer ring of the first capsule 31 is the first surface 46, the middle connection of the first capsule 31 is provided with a connecting sleeve 35, the connecting sleeve 35 is used to connect the rotating shaft, and a fastening screw 36 is arranged on the connecting sleeve 35 . The first sub-port protruding ring 37 on the left side of the first bag tube 31 is connected with the right side of the third bag tube 42, the outer ring of the third bag tube 42 is the second surface 47, and the right side end of the third bag tube 42 A first forming notch 48 is provided, and a first sub-mouth die 49 is formed between the third bladder 42 and the first sub-mouth protruding ring 37 . The left end of...

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Abstract

The invention relates to the field of tire forming, in particular to a tire body of a tire forming capsule and a preparing method of the capsule body. The capsule body of the tire forming capsule comprises an outer capsule body, a first reversely-wrapped capsule body and a second reversely-wrapped capsule body, all of which are integrally formed in a vulcanization manner. The first reversely-wrapped capsule body and the second reversely-wrapped capsule body are connected with the two ends of the outer capsule body correspondingly and are folded back to be reversely wrapped. When the capsule body is formed in the vulcanization manner, the outer surface of the outer capsule body, the outer surface of the first reversely-wrapped capsule body and the outer surface of the second reversely-wrapped capsule body are attached to a die, the inner surface of the outer capsule body, the inner surface of the first reversely-wrapped capsule body and the inner surface of the second reversely-wrapped capsule body are inflated by 2 bar-10 bar, the vulcanization time ranges from 30 min to 120 min, and the temperature ranges from 120 DEG C to 180 DEG C. The flatness of the surface of the capsule body can be ensured through control over the smoothness of a die housing, and uniformity of the thickness of the capsule body is mainly affected by fluctuation of the thickness of semi-finished rubber sheets under the condition that the size and the inflation inner pressure of a die cavity are stable.

Description

technical field [0001] The invention relates to the field of tire building, in particular to a tire building bladder body and a preparation method thereof. Background technique [0002] Chinese utility model patent (application number: CN201420214567.4, application date: 2014.04.30) discloses a tire building capsule including a capsule body and a fixing seat, the capsule body is arranged on the fixing seat, the capsule body includes an outer capsule body, a first turn-up The capsule body and the second anti-encapsulation body, the first anti-encapsulation body and the second anti-encapsulation body are respectively connected to the two ends of the outer capsule body and turned back. This kind of tire building capsule body adopts a straight cylindrical structure, covered with film and anti-adhesive cloth in sequence, and fixed with water-wrapped cloth (also called salt bar). The rubber materials are combined, and the stability of this process depends on the winding density, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D30/06B29C35/02B29D22/02
CPCB29D22/02B29D30/0654B29D2030/0655
Inventor 何毅超张敏蔡林峰
Owner ZHONGCE RUBBER GRP CO LTD
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