A tire turn-up capsule forming drum and its use method

Abstract

The invention discloses a tire turn-up capsule forming drum and a using method thereof, and relates to the technical field of tire turn-up capsule processing equipment. The inner ring is located on the inner side of the outer drum body, and the inside of the forming drum consists of the outer shell layer, the outer air channel, the outer layer, the heat medium channel, the outer second layer, the inner air channel and the inner shell layer from the outside to the inside; the outer shell layer has The outer air hole communicated with the outer air passage, and the inner air hole communicated with the inner air passage on the inner shell; the first air inlet pipe connected with the outer air passage and the second air inlet pipe connected with the heat medium passage are opened on the inner ring And the third intake pipe communicated with the inner air passage. The tire turn-up capsule is formed on the forming drum, which can be vacuumed and exhausted, so that the inner film of the capsule is completely attached to the drum surface of the forming drum, which improves the forming stability of the tire turn-up capsule and is easy to operate; the forming drum and the tire The turn-up bladder is vulcanized at the same time, and the hot medium is filled to improve the vulcanization process of the tire turn-up bladder; after vulcanization, it can be inflated and demolded to maintain the integrity of the tire turn-up bladder.

Description

technical field [0001] The invention relates to the technical field of tire turn-up capsule processing equipment, in particular to a tire turn-up capsule forming drum and a use method thereof. Background technique [0002] The tire turn-up capsule is used in the tire molding process, the main function is to discharge the gas between the bead part of the tire bead and the cord layer, and enhance the fit between the bead and the cord layer, thereby avoiding the bead ring and the cord. Bubbles and delamination appear between cloth layers. [0003] The tire turn-up capsule is generally in the shape of a cylinder, including a capsule body and a spigot, and there are differences in specific structures according to actual needs. Among them, the most widely used is the C-type reverse-wrapped capsule. The two ends of the capsule body of the C-type turn-around capsule are bent inward, and on the inner side, the slits at the two ends are relatively close and biased to one side; the C...

AI Technical Summary

Problems solved by technology

When forming, when the film is pasted on the surface of the forming drum, it needs to be exhausted to make it fully fit, and then bent, one side is bent to a greater degree, and after bending, it is bonded to the lower surface of the forming drum, which is very difficult to operate Large, currently it is mostly manual operation, the process takes a long time, and the operation stability is poor

In addition, after the tire turn-up bladder is vulcanized, due to the large degree of bending of the bladder, part of the mold is covered by two layers of inner and outer bladders. In addition, the thickness of the bladder is small, and the tire turn-up bladder is easily damaged during the demoulding process.

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