Tread splicing apparatus

Abstract

An automatic thread splicing apparatus is provided to cut the thread of tyre semifinished product wound on the trolley into a predetermined length to wind on a molding belt drum. A thread is supplied to a convey belt through a loop unit, and cut into a predetermined length by a cutter unit. The cut thread passes through a compression roll, and is wound onto a molding belt drum and spliced. A width guide unit for guiding the initial width of the thread is arrange in front of the cutter unit, and a marking unit is arrange in rear of the cutter unit. A length measurement unit is interposed between the marking unit and the molding belt drum so as to measure the length of the cut thread and has a marked portion formed by the marking unit. A splicing checking unit is spaced apart from the molding belt drum so as to check the splicing interval of the thread wound on the molding belt drum.

Description

technical field [0001] The present invention relates to an automatic tread joining device that cuts a tire tread that is a semi-finished tire rolled on a trolley to a predetermined length and rolls it on a forming belt cylinder, and more specifically, relates to improving the performance of tires by automating the entire operation Automatic tread joining device with labor saving and uniform quality. Background technique [0002] The so-called tire tread refers to the part of the tire that is in direct contact with the road surface. After such a tread is extruded with a specified length in the extruder and stored, when the tire is formed, in order to improve the efficiency of the forming operation , the tread is joined by a tread joining device, that is to say, the existing tread joining device as shown in FIG. Throwing into the conveying conveyor belt 103, then the cut portion 104 is cut into a length unit around the forming belt cylinder 106 and moves, and is supplied afte...

AI Technical Summary

Problems solved by technology

[0005] Moreover, after being wound on the above-mentioned forming belt type cylinder, the joint state of the tread overlaps or there is a phenomenon that there is a gap. Furthermore, although the cut tread cannot be subjected to an external force causing deformation on the conveyance belt 103, in the conventional device, the width guide 107 induces an external force while guiding the front ends on both sides as the shoulder portion of the tread 101, thereby change in length

[0006] Therefore, conventionally, after the tread 101 is wound on the molding belt cylinder 106, the operator visually confirms the joining state, and if it is not consistent, the joining operation is performed by properly stretching or overlapping manually. Point out the following problems: not only lead to high labor intensity and lower productivity, but also have adverse effects on the quality of finished tires

Images