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Sleeveless tire building drum with interchangeable width elements

A tire building drum and fixture technology, applied in tires, household appliances, other household appliances, etc., can solve the problems of uneven tires, uneven air flow distribution, etc.

Inactive Publication Date: 2014-03-26
THE GOODYEAR TIRE & RUBBER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] A third disadvantage of prior art center sleeves is that they are the highest maintenance component on a tire building drum, requiring frequent replacement when they break or blister
[0009] A fourth disadvantage of the prior art center sleeve is that the use of the sleeve results in an increase in the amount of force required to expand the drum
[0010] A fifth disadvantage of the prior art center sleeve is that the use of the sleeve can lead to uneven air flow distribution during inflation of the carcass, resulting in tire unevenness

Method used

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  • Sleeveless tire building drum with interchangeable width elements
  • Sleeveless tire building drum with interchangeable width elements
  • Sleeveless tire building drum with interchangeable width elements

Examples

Experimental program
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Embodiment Construction

[0052]Referring to the drawings, there is shown an exemplary tire building drum 5 of the present invention. More specifically, as shown in FIGS. 1 a and 1 b , the tire building drum 5 has a left-hand side 7 and a right-hand side 9 joined together by a central section 20 . The central section 20 is further divided into a right hand side 22b and a left hand side 22a, which are axially and radially movable, as will be described in more detail below. Adjacent the central section 20 are first and second bead locking mechanisms 25a, b, which are also radially movable, as figure 2 shown in . Adjacent the bead lock mechanism are first and second shoulder segments 29 . Both the bead lock mechanism and the shoulder are axially movable and driven by a central screw mechanism 121 . Thus, both the left-hand and right-hand sides of the drum are axially movable. These components will be described in more detail below.

[0053] center section

[0054] The central section 20 of the tire ...

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PUM

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Abstract

The present invention relates to a sleeveless tire building drum with interchangeable width elements, and discloses a tire building drum and a method for forming a tire body. The tire building drum comprises a center section composed of a plurality of segments that are radially and axially movable. The sleeve of the tire building drum over the center section has been eliminated, and instead, two seals are located on the outer ends or shoulders of the center section of the tire building drum. The building drum further comprises shoulder sections that are axially movable. The shoulder sections include radially expandable bead locks. The method employs the steps of applying one or more carcass layers, locking the bead locks and moving the center section radially outwardly while moving the bead locks axially inwardly.

Description

technical field [0001] The present invention relates to a tire building drum, more particularly to a tire building drum without a central sleeve. Background technique [0002] The manufacture of tires generally involves a tire building drum in which several tire components are sequentially applied to the drum to form a tire carcass of cylindrical shape. This stage of the tire building process is often referred to as "stage one" of the tire building process. The tire carcass is then typically removed from the tire building drum and sent to a second stage, expandable tire building drum where the carcass is expanded to accommodate the remaining components of the tire such as the belt The toroidal shape of the bundle ply pack and rubber tread. The finished annular shaped uncured tire carcass or green tire is then removed from the second stage drum and subsequently molded and cured into a finished tire. [0003] Thus, the prior art process requires two tire building drums and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/24
CPCB29D30/245B29D30/26
Inventor D.R.韦弗D.A.伦德尔
Owner THE GOODYEAR TIRE & RUBBER CO