| 摘要 |
PURPOSE:To strengthen the blocking of both free end parts and at the same time enhance the production efficiency of a tube by a method wherein both end parts of a hollow cylinder, which is made of uncured rubber material and has a predetermined length, are flattened by pressing and, after that, both end surfaces of said end parts are cut off and uncured rubber sealing members are bonded by pressure to both the flat cut end surface parts so as to block the ends and finally vulcanized. CONSTITUTION:An uncured rubber hollow cylinder 1 is cut in a predetermined length in response to the peripheral length of a tire, in which the cylinder is be attached. By vertically pinchingly pressing one end part of the cylinder with the force 3 of a splicer 2, the inner wall surfaces opposing to each other are urged on each other and flattened so as to form the closed state. One end part of an uncured rubber sealing member 5 is pinched by a force 4 at the other side of the splicer and fixed. In the state as mentioned above, the respective end parts are cut off in an amount of a small range with electrically-heated cutters 6. After that, cut area end surfaces 7 and 8 are contact-bonded by pressure. The band-shaped sealing member 5 is cut off by leaving a length of P. A similar operation as described above is executed at the other end part of the hollow cylinder 1 and an air valve is pasted to the predetermined site and finally vulcanized in order to complete a discontinuous type tube 10.
|
