Tire member-forming apparatus

Patent metadata

Field	Value
Publication number	US-10343360-B2
Application number	US-201515116092-A
Country	US
Kind code	B2
Filing date	Jan 15, 2015
Priority date	Feb 24, 2014
Publication date	Jul 9, 2019
Grant date	Jul 9, 2019

Abstract

The present invention glues a rubber strip on the surface of a non-right circular cylindrical winding body with good precision. The present invention reduces the space occupied by the apparatus. The tire member-forming apparatus is provided with a transport conveyor with a conveyor belt that is guided by guide rollers so that the conveyor belt is able to circle. The conveyor surface of the conveyor belt is provided with a conveyor surface width center line that extends in a straight line over the entire length thereof. The guide rollers are grouped into guide rollers on the front side of the conveyor direction and guide rollers on the back side of the conveyor direction. The front guide rollers are held so as to be capable of tilting around the conveyor surface width center line. As a result, on the conveyor surface, a twistable twisting conveyor surface section is formed between a front conveyor surface section, which is supported by the front guide rollers, and a back conveyor surface section, which is supported by the back guide rollers.

First claim

The invention claimed is:

1. A tire member-forming apparatus comprising:
a drum device comprising a wound body rotatably driven and having a non-straight cylindrical shape around which a rubber strip is wound;
a rubber strip supply device to supply the rubber strip; and
a rubber strip sticking device comprising an applicator transporting the rubber strip supplied from the rubber strip supply device and winding the same around the wound body;
wherein the applicator comprises a transport conveyor comprising a transport belt for transporting the rubber strip on a transport surface, the transport belt being guided by a plurality of guide rollers to turn around the guide rollers;
wherein the transport surface comprises a center line in a width direction extending linearly over the entire length of the transport surface;
wherein the guide rollers comprise front guide rollers comprising a foremost guide roller disposed on the foremost side of the transport direction and back guide rollers comprising a backmost guide roller disposed on the backmost side of the transport direction;
wherein the back guide rollers are supported by a first frame and the front guide rollers are supported by a second frame, the second frame supported by the first frame tiltably around the center line of the transport surface in the width direction so that the transport surface of the transport belt forms a twisted transport surface portion between a front transport surface portion supported by the front guide rollers and a back transport surface portion supported by the back guide rollers,
wherein the applicator comprises a back-side press conveyor, a front-side press conveyor arranged forwardly of the back-side press conveyor in the transport direction for pressing the rubber strip against the transport belt, and a cutting device for cutting the rubber strip,
the back-side press conveyor having a press belt guided by a plurality of upper guide rollers to circle in a loop around the upper guide rollers to press the rubber strip against the transport belt,
wherein the upper guide rollers comprise front upper guide rollers supported by the second frame and back upper guide rollers supported by the first frame to twist the press belt when the second frame is tilted with respect to the first frame in such a manner that the press belt comprises a press surface that is composed of a front press surface portion pressing the rubber strip against the front transport surface portion, a back press surface portion pressing the rubber strip against the back transport surface portion, and a twisted press surface portion pressing the rubber strip against the twisted transport surface portion,
wherein the cutting device is arranged between the front-side press conveyor and the back-side press conveyor,
wherein the cutting device comprises a cutter blade for cutting the rubber strip, and
wherein the front guide rollers comprise a guide roller disposed under the cutter blade to support the transport belt from beneath upon the cutter blade cutting the rubber strip.

2. The tire member-forming apparatus according to claim 1 ,
wherein the rubber strip supply device comprises a rubber extruder comprising a gear pump capable of quantitatively extruding rubber and an extrusion head that pre-shapes the rubber extruded from the gear pump.

3. The tire member-forming apparatus according to claim 1 ,
wherein the rubber strip supply device has a lateral movement stage supported movably in a direction parallel to an axis of the wound body, and the applicator is attached to the lateral movement stage.

4. The tire member-forming apparatus according to claim 2 ,
wherein the rubber strip supply device has a lateral movement stage supported movably in a direction parallel to an axis of the wound body, and the applicator is attached to the lateral movement stage.

Assignees

• Sumitomo Rubber Ind

Inventors

• Otani Masafumi

Classifications

• B29D2030/3085

  the layers being applied being already cut to the appropriate length, before the application step · CPC title

• B29D30/24

  Drums · CPC title

• B29B11/10

  Extrusion moulding · CPC title

• B29D30/08

  Building tyres · CPC title

• B29D30/60

  by winding narrow strips · CPC title