Carcass ply forming apparatus and method for manufacturing pneumatic tyre using the same
A carcass ply and carcass ply technology, which is applied in the field of pneumatic tire manufacturing, can solve problems such as the difficulty of automatically forming carcass ply, and achieve the effects of convenient operation, automation, and deformation prevention
Inactive Publication Date: 2014-12-10
SUMITOMO RUBBER IND LTD
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- Summary
- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
Thus, it is difficult to automatically form the carcass ply
Method used
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Examples
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[0039] Hereinafter, examples of the present invention will be specifically described. figure 1 is a front view illustrating an embodiment of the carcass ply forming apparatus of the present invention. figure 2 It is a side view of the main part of the carcass ply forming apparatus of the present invention.
[0040] like figure 1 and 2 As shown, a carcass ply forming apparatus 1 according to the present invention (hereinafter, simply referred to as “forming apparatus 1 ”) includes a core 2 , a core rotating device 3 , a carcass guiding device 4 and an attaching device 5 . The core 2 has, on the outer surface, a forming surface M which approximates in shape the inner surface of a tire which has been inflated by the air pressure charged into it. The core rotating device 3 rotates the core 2 in the tire circumferential direction. The ply guide device 4 guides the ply piece S for forming the carcass ply to the ply attaching position P, and feeds the ply piece S intermittently ...
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[Purpose] The accuracy of forming a carcass ply on a core body is improved and production rate is increased through automation. [Technical scheme] A layer guide device is provided for guiding a ply piece for forming a carcass layer to a ply attaching position, and intermittently feeding the ply piece; and an attaching apparatus is used for, while feeding the ply piece at each time, forming a rectangular portion on a ply feed portion for the ply piece and attaching the rectangular portion to the external surface of the core body; moreover, the attaching apparatus comprises: a holding device including a holding unit for holding the ply feed portion on the two end portions of the ply feed portion; a slot forming device including a cutter for forming a slot in the ply piece on a rear side in a feed direction in the vicinity of the holding portion and the ply feed portion, thereby forming the rectangular portion divided by the slot on the ply feed portion; and an attaching device including a press roll which rotates and moves in an inward direction in the radial direction of a tyre while pressing the rectangular portion against the external surface of the core body.
Description
technical field [0001] The present invention relates to a carcass ply forming apparatus capable of attaching carcass ply sheets for forming a carcass with high precision on the outer surface of a core (plysheet) and can improve productivity through automation, and relates to a manufacturing method of a pneumatic tire using such a carcass ply forming apparatus. Background technique [0002] In recent years, a method of manufacturing a pneumatic tire has been proposed, for example, in which a core having an outer surface having an approximate shape to the inner surface of an inflated tire is used to improve the uniformity of the tire (see Patent Document 1 below) . In this manufacturing method, for example, as shown in FIG. 10(A), a carcass ply sheet for forming a carcass ply is cut into a plurality of laterally elongated rectangular plates in the circumferential direction of the tire along the carcass cord a1. piece. As shown in FIG. 10(B), a plurality of transversely elon...
Claims
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IPC IPC(8): B29D30/08
Inventor 石原昇
Owner SUMITOMO RUBBER IND LTD