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Device to apply rubber tape

A technology of rubber belts and conveyor belts, applied in the field of devices for applying rubber belts, can solve problems such as easy rupture of thin rubber belts

Active Publication Date: 2007-05-23
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also, if the winding speed is increased to improve production efficiency, the raw thin rubber band becomes prone to breakage due to torsional deformation in the worst case

Method used

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  • Device to apply rubber tape
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  • Device to apply rubber tape

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Embodiment Construction

[0025] In the drawings, a device for applying a rubber belt (hereinafter referred to as "belt application device 1") according to the present invention is a device that feeds and applies a long continuous raw rubber belt 3 onto a winding surface S of a rotating object 4. A means of winding 5 of rubber band 3 is thus formed around object 4 .

[0026] In this embodiment, as shown in FIG. 3 , the tape applying device 1 is incorporated in an apparatus 100 for manufacturing a tread assembly of a motorcycle pneumatic tire T, which includes an extruder 11 for extruding the tape 3 forms of raw rubber; belt applicator 1; and forming drum 6. Thus, in this embodiment, the aforementioned rotating body 4 generally refers to the forming drum 6 itself and the material previously wound around the drum 6 .

[0027] Further, as shown in FIG. 7, the motorcycle tire T includes: a tread portion Tt; a pair of axially spaced bead portions Tb each having a bead core Tc therein; a pair of sidewall po...

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Abstract

A device to apply a thin narrow rubber tape to a rotating object (4), which can be suitably utilized for making a rubber component of a pneumatic tire, is disclosed. The device comprises: a conveyer belt; a let-off roller (16) on which the conveyer belt runs and from which the rubber tape is let off; a traverser (21) to move the let-off roller (16) in an X-axis direction parallel to the rotational axis of the object; a radial shifter to move the let-off roller in a Y-axis direction perpendicular to the X-axis direction; a tilter (23) to turn the rotational axis of the let-off roller (16) around a reference axis which is parallel to a Z-axis direction perpendicular to the X-axis direction and Y-axis direction. Said conveyer belt provided with a substantially straight part extending for a certain distance from the let-off roller to the upstream side thereof at a substantially constant inclination angle theta of more than 0 but not more than 70 degrees with respect to a reference plane including the rotational axis of the let-off roller and the rotational axis of the object.

Description

technical field [0001] The invention relates to a device for applying a rubber band on the surface of a rotating object, such as a drum for building rubber parts of tires. Background technique [0002] For example, as disclosed in Japanese Patent Application No. 2000-94542, there has been proposed a method of manufacturing a pneumatic tire that utilizes a method of winding narrow and thin strips of raw rubber by overlapping instead of relatively wide and thick strips of raw rubber. Formed rubber parts. [0003] In order to adapt this method for practical use, tire manufacturers have made great efforts in recent years. For an efficient production line, this narrow and thin strip of raw rubber must be wound quickly and precisely. As shown in Fig. 9, if the distance (ds) between the feed-out roller (a1) at the downstream end of the tape applicator (a) and the surface (cs) of the object (c) is large, it is difficult to wind accurately . If the winding speed is increased, the...

Claims

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Application Information

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IPC IPC(8): B29D30/26B29D30/30B29D30/60
CPCB29D30/60B29D30/30
Inventor 林典男三木洋二郎
Owner SUMITOMO RUBBER IND LTD
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