WO2005120814A1 - 生タイヤの成型方法、およびそれに用いられる生タイヤ冷却装置 - Google Patents
生タイヤの成型方法、およびそれに用いられる生タイヤ冷却装置 Download PDFInfo
- Publication number
- WO2005120814A1 WO2005120814A1 PCT/JP2005/008156 JP2005008156W WO2005120814A1 WO 2005120814 A1 WO2005120814 A1 WO 2005120814A1 JP 2005008156 W JP2005008156 W JP 2005008156W WO 2005120814 A1 WO2005120814 A1 WO 2005120814A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooling
- unvulcanized rubber
- cooling gas
- green tire
- molding
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
- B29D30/30—Applying the layers; Guiding or stretching the layers during application
- B29D30/3028—Applying the layers; Guiding or stretching the layers during application by feeding a continuous band and winding it helically, i.e. the band is fed while being advanced along the drum axis, to form an annular element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
- B29D30/58—Applying bands of rubber treads, i.e. applying camel backs
- B29D30/60—Applying bands of rubber treads, i.e. applying camel backs by winding narrow strips
Definitions
- the present invention relates to a method for molding a raw tire and a raw tire cooling device used for the method.
- the present invention relates to a method for molding a green tire by forming an unvulcanized rubber member by winding a plurality of unvulcanized rubber ribbons around a rotating support, and a method for molding a green tire.
- the present invention relates to a tire cooling device, and more particularly to a device capable of preventing defects such as bear, Chris and air.
- FIG. 1 is a schematic view showing the conventional method.
- Fig. 2 is a cross-sectional view of an unvulcanized rubber member being formed by the conventional method, taken along the line II-II in Fig. 1.
- FIG. This green tire is molded by extruding an unvulcanized rubber ribbon 91 from an extruder 93 and guiding it directly onto a support 92, and pressing the unvulcanized rubber ribbon 91 against the support 92 using an attaching roller 94. By rotating, the unvulcanized rubber ribbon 91 is wound around the support 92 to form an unvulcanized rubber member 95.
- the unvulcanized rubber ribbon 91 extruded from the extruder 92 is directly wound on the support 2 in a high temperature state without stocking in another place and without stocking.
- the unvulcanized rubber ribbon 91 and the support 92 or the unvulcanized rubber ribbon 91 can be firmly bonded without using an adhesive or the like.
- Patent Document 1 JP 2002-160284 A
- Patent Document 2 JP 2002-154991
- a method of cooling the unvulcanized rubber ribbon 91 before winding it on the support 92 while applying force is as follows. First, the unvulcanized rubber ribbon 91 is moved from the extruder 2 to the bonding roller 94. Since it is only cooled while passing through a small part of the short section, it is necessary to cool it to a temperature that does not cause blasting. Therefore, there is a problem that the adhesive strength may be reduced.
- the present invention has been made in view of such a problem, and it is possible to sufficiently cool the unvulcanized rubber ribbon 91 without sacrificing the adhesive performance, and to prevent the occurrence of a blaster. It is an object of the present invention to provide a method of molding a green tire and a raw tire cooling device used for the method.
- the invention according to ⁇ 1> is a method of forming an unvulcanized rubber member by winding a plurality of unvulcanized rubber ribbons around a rotating support to form a green tire,
- At least the winding start force of the unvulcanized rubber ribbon In the process up to the end of the winding, a width direction range corresponding to the entire width of the unvulcanized rubber member on the surface of the rotating green tire in the process of molding, and a predetermined circumferential direction
- a width direction range corresponding to the entire width of the unvulcanized rubber member on the surface of the rotating green tire in the process of molding, and a predetermined circumferential direction
- ⁇ 2> is a method for molding a green tire according to ⁇ 1>, wherein the spraying of the cooling gas is limited only during rotation of the support.
- the circumferential angle range of the surface of the raw tire during molding, in which a cooling gas is blown is set to a range of 90 degrees or more fixed in a predetermined direction. This is the method for molding raw tires.
- ⁇ 4> is a method for molding a green tire according to any one of ⁇ 1> to ⁇ 3>, wherein air is used as the cooling gas.
- the invention of ⁇ 5> is a green tire cooling device used in the green tire molding method according to any one of ⁇ 1> to ⁇ 4>,
- a cooling blower that generates and blows a cooling gas, and an outlet that blows out the cooling gas generated by the cooling blower, wherein the outlet is the entire width of the unvulcanized rubber member on the surface of the raw tire being molded.
- This is a raw tire cooling device that is arranged so that a cooling gas is blown over the entire region specified by a width direction range corresponding to the above and a predetermined circumferential angle range.
- the air conditioner according to ⁇ 5> further comprising: a blowing control means for controlling start and end of the cooling gas blowing from the blowing port.
- the raw tire cooling device is configured to start the blowing after starting the rotation for the tire, and to finish the blowing before the support body finishes the rotation.
- a switching damper and an opening for releasing the cooling gas to the outside are provided in the path for guiding the cooling gas from the cooling blower to the blowout port.
- the damper is moved between an open position where the opening is closed and the cooling blower and the outlet are connected to each other, and a closed position where the opening is opened and communication between the cooling blower and the outlet is cut off.
- the blowout control means performs control for continuously operating the cooling blower or control for starting the cooling blower before the start of the blowing of the cooling gas from the outlet and stopping it after the end of the blowing,
- a fresh tire cooling device configured to control the start and end of the blowing by switching a switching damper between the open position and the closed position.
- the entire width of the unvulcanized rubber member on the surface of the rotating green tire in the middle of molding since the cooling gas is continuously blown over the entire area specified by the width direction range corresponding to the above and the predetermined circumferential angle range, the wound unvulcanized rubber ribbon is repeatedly applied for a long time. By cooling, blisters can be prevented from occurring, and since the non-vulcanized rubber ribbon is not cooled before winding, the adhesive strength of the unvulcanized rubber ribbon is not sacrificed.
- the cooling fan includes a cooling blower that generates and blows a cooling gas, and an outlet that blows out the cooling gas generated by the cooling blower. Since the cooling gas is blown over the entire area specified by the width direction range corresponding to the entire width of the unvulcanized rubber member and the predetermined circumferential angle range, as described above, Cool the attached unvulcanized rubber ribbon many times and for a long time to The occurrence of a lister can be prevented.
- a blow control means is provided for controlling the start and end of the blow-out of the cooling gas from the blow-out port, and the blow control means is provided with a support for winding the unvulcanized rubber ribbon. Since the blowing is started after the rotation is started and the blowing is finished before the support finishes its rotation, the blowing of the cooling gas can be limited only during the rotation of the support. As described above, it is possible to prevent the tire formality from being deteriorated.
- a switching damper and an opening for opening the cooling gas to the outside are provided in the middle of the path for guiding the cooling gas to the cooling blower power outlet, and the switching damper is closed. Switching between an open position where the cooling blower and the outlet are connected to each other and a closed position where the opening is opened and the communication between the cooling blower and the outlet is cut off,
- the blowout control means performs control for continuously operating the cooling blower or control for starting the operation of the cooling blower before the start of the blowing of the cooling gas from the outlet and stopping it after the end of the blowing,
- the switching damper is switched between the open position and the closed position to control the start and end of the blowout, so that the cooling blower is directly turned on and off to control the start and end of the blowout. You can control this much more responsively.
- FIG. 1 is a conceptual diagram showing a conventional green tire molding method.
- FIG. 2 is a schematic view showing a cross section of an unvulcanized rubber member formed by a conventional method.
- FIG. 3 is a perspective view showing a raw tire cooling device of the present embodiment.
- FIG. 4 is a conceptual diagram illustrating a problem when a cooling gas is blown from an outlet while the support 2 is not rotating.
- FIG. 5 is a sectional view showing a switching damper.
- FIG. 6 is a graph for explaining the effect of using a green tire cooling device in forming a tread rubber by winding an unvulcanized rubber ribbon.
- FIG. 7 is a cross-sectional view of the unvulcanized rubber member shown in a state in which the innermost unvulcanized rubber ribbon is being wound.
- FIG. 3 is a perspective view showing the green tire cooling device of the present embodiment.
- the green tire cooling device 1 is wound on a support 2 which is extruded from an extruder 3 and rotates via an attaching roller 4.
- the cooling air blower 13 is configured to cool the unvulcanized rubber ribbon R and generates and blows a cooling gas, an outlet 14 for blowing out the cooling gas generated by the cooling air blower 13, and an outlet 1 for cooling the cooling gas from the cooling air blower 13.
- An air passage 17 leading to 4 and a switching damper 16 for connecting and disconnecting the communication between the cooling blower 13 and the air outlet 14 are provided.
- the support 2 refers to a rotating body extending radially inward of an unvulcanized rubber member 5 formed by winding an unvulcanized rubber ribbon R, for example, as shown in FIG.
- the tread rubber is formed as the unvulcanized rubber member
- the belt that has already been formed serves as the support 2
- the inner liner rubber is formed as the unvulcanized rubber member, the forming drum or the rigid core is supported. Holder 2
- the blow-out port 14 is fixedly provided, and the cooling gas from the blow-out port 14 is supplied to the rotating green tire surface in the width direction range corresponding to the entire width W of the unvulcanized rubber member 5, It is evenly sprayed over the entire area specified by the predetermined circumferential angle range ⁇ .
- the width in the width direction of the surface of the green tire in the middle of molding, which is blown with a cooling gas, corresponds to the entire width W of the unvulcanized rubber member 5 in the finished state, so that the newly uncured sulfur can be wound.
- the unvulcanized rubber ribbon R immediately after winding can be cooled, and a plurality of unvulcanized rubber ribbons R arranged in the tire width direction are collectively cooled.
- the support 2 is also cooled, an extremely high cooling effect can be obtained, and the generation of blisters can be prevented.
- the angle range ⁇ for specifying the cooling gas blowing region in the tire circumferential direction is preferably 90 ° or more, so that the cooling range is widened, thereby further enhancing the cooling effect and generating blisters. Can be effectively prevented.
- the cooling air is not sprayed on the unvulcanized rubber ribbon R when the support 2 is stopped without rotating, as shown in FIG.
- the cooling gas is blown from the outlet 14 in a state in which the cooling gas does not rotate, the cooling gas is This is because there is a possibility that a physical property difference occurs between the part 5a to be sprayed and cooled and the part other than the part 5a, thereby deteriorating the tire formability.
- the raw tire cooling device 1 be provided with at least blowout control means for controlling the start and end of the blowout of the cooling gas from the blowout port. Starts to rotate after the rotation for winding the unvulcanized rubber ribbon starts, and operates to end the blowing before the support finishes its rotation.
- the start and end of the blowing of the cooling gas from the outlet 14 can be performed by turning on and off the operation of the cooling blower 13.
- the on / off of the operation of the cooling blower 13 and the cooling gas The timing of the start and end of the blow-out from the air outlet 14 is delayed due to the large capacity of the air passage 17, which makes it difficult to control the start and end of the cooling gas blowout in a timely manner. It is preferable to control the switching damper 16 to control the start and end of blowing.
- the cooling blower 13 in order to be able to control the start and end of the blowout by controlling the switching damper 16, the cooling blower 13 must be continuously operated, or the operating power of the cooling blower 13 It is assumed that it starts before the start of the blowout from the outlet 14 and stops after the end of the blowout, so that the blowout control means is configured to control the cooling blower 13 in this way.
- FIG. 5 is a partial cross-sectional view showing the switching damper 16, and FIG. 5 (a) shows a state in which the cooling blower 13 and the outlet 14 are communicated by the switching damper 16; FIG. 5 (b) shows a state in which the communication is cut off.
- the switching damper 16 is connected to a partition plate 22 slidably mounted around a hinge 25 fixed to the duct 21 and slidably around a tip 26A of the rod 26 by moving the rod 26 forward and backward.
- a cylinder 24 operable to swing the divided partition plate 22 around a hinge portion 25.
- the end of the cylinder 24 opposite to the rod 26 is swingably ducted through a bracket 27. Mounted on 21.
- A indicates the upstream side of the duct 21, that is, the side of the cooling blower 13
- B indicates the downstream side of the duct 21, that is, the side of the outlet 14.
- an opening 23 that opens a part of the duct 21 on the upstream side of the hinge portion 25 to release the cooling gas to the outside is provided.
- the partition plate 22 swingably connected to the distal end 26A of the rod 26 It is in a position where it swings around in a direction approaching the opening 23. At this time, the opening 23 is closed and the cooling blower 13 and the outlet 14 are in communication.
- the partition plate 22 swingably connected to the distal end 26A of the rod 26 It is located at a position where it swings around in a direction away from the opening 23, and at this time, the opening 23 is opened and the communication between the cooling blower 13 and the outlet 14 is cut off.
- the switching damper 16 closes the opening 23 and opens the communication between the cooling blower 13 and the outlet 14, and opens the opening 23 and connects the cooling blower 13 to the cooling blower 13. Switching can be performed between a closed position in which communication with the outlet 14 is interrupted, and a signal for operating the cylinder 24 is output from the blowout control means, so that the switching damper 16 is switched between these positions. Switching can be performed.
- the switching damper 16 Since the switching damper 16 is provided adjacent to the air outlet, if the switching damper 16 is switched to the closed position, the blowing of the cooling gas by the air outlet 14 can be stopped immediately. On the other hand, when the switching damper 16 is switched to the open position, since the cooling gas flows to the upstream side adjacent to the partition plate 22 so as to be discharged from the opening 23, the cooling gas maintained at a low temperature is immediately blown. By leading to the outlet 14, the blowing of the cooling gas from the outlet 14 can be started.
- FIG. 6 shows a case where a tread rubber as an example of the unvulcanized rubber member 5 is formed by winding an unvulcanized rubber ribbon, and the raw tire cooling device 1 described in the above embodiment is operated to produce a raw rubber.
- the tire was cooled and molded, and the raw tire cooling device 1 was not operated.
- It is the graph which recorded the change of the temperature of the vulcanized rubber ribbon.
- the vertical axis represents the temperature (° C) of the non-vulcanized rubber ribbon
- the horizontal axis represents the time (minutes) of the winding start force.
- FIG. 7 shows an unvulcanized rubber ribbon R of the innermost layer in a state in which the uncured rubber ribbon R is being wound.
- FIG. 9 is a cross-sectional view of the rubber member 5, and the temperature was measured by sticking to a point P on the outer periphery of the support 2 shown in FIG. 7 and recording the temperature there.
- the present invention can be applied to the molding of tires of all sizes.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tyre Moulding (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/628,364 US20080093011A1 (en) | 2004-06-08 | 2005-04-28 | Method for Building Green Tire and Green Tire Cooling Device Used Therefor |
DE602005021100T DE602005021100D1 (de) | 2004-06-08 | 2005-04-28 | Verfahren zum ausbilden von grünen reifen |
MXPA06014050A MXPA06014050A (es) | 2004-06-08 | 2005-04-28 | Metodo para construir una cubierta no vulcanizada y el dispositivo de enfriamiento de la cubierta no vulcanizada utilizado en el mismo. |
EP05736976A EP1754594B1 (en) | 2004-06-08 | 2005-04-28 | Method for forming green tire |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004169733A JP4454396B2 (ja) | 2004-06-08 | 2004-06-08 | 生タイヤの成型方法、およびそれに用いられる生タイヤ冷却装置 |
JP2004-169733 | 2004-06-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005120814A1 true WO2005120814A1 (ja) | 2005-12-22 |
Family
ID=35502913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/008156 WO2005120814A1 (ja) | 2004-06-08 | 2005-04-28 | 生タイヤの成型方法、およびそれに用いられる生タイヤ冷却装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20080093011A1 (ja) |
EP (1) | EP1754594B1 (ja) |
JP (1) | JP4454396B2 (ja) |
DE (1) | DE602005021100D1 (ja) |
MX (1) | MXPA06014050A (ja) |
WO (1) | WO2005120814A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007203903A (ja) * | 2006-02-02 | 2007-08-16 | Bridgestone Corp | 重荷重用空気入りタイヤ |
CN105500745A (zh) * | 2014-09-27 | 2016-04-20 | 青岛软控机电工程有限公司 | 翻胎缠绕机机头及翻胎挤出缠绕装置 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4793538B2 (ja) * | 2004-12-20 | 2011-10-12 | 横浜ゴム株式会社 | タイヤ製造方法及びその装置 |
JP6117082B2 (ja) | 2013-11-21 | 2017-04-19 | 東洋ゴム工業株式会社 | ストリップゴムの貼付け方法及び貼付け装置 |
JP7215888B2 (ja) * | 2018-12-13 | 2023-01-31 | Toyo Tire株式会社 | 空気入りタイヤの製造方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003340935A (ja) * | 2002-05-29 | 2003-12-02 | Yokohama Rubber Co Ltd:The | 空気入りタイヤの製造方法、その製造方法により製造された空気入りタイヤ及びその製造方法に使用するストリップ材冷却装置 |
JP2004025533A (ja) * | 2002-06-24 | 2004-01-29 | Yokohama Rubber Co Ltd:The | タイヤ構成部材の成形方法 |
JP2004074730A (ja) * | 2002-08-22 | 2004-03-11 | Yokohama Rubber Co Ltd:The | ストリップ材供給方法 |
Family Cites Families (12)
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US3645660A (en) * | 1966-11-22 | 1972-02-29 | Uniroyal Inc | Apparatus for jet air cooling of tires during postinflation |
US3433295A (en) * | 1967-10-03 | 1969-03-18 | Gilbert H Avery | Room air distribution and control damper means in an air conditioning system |
US3717529A (en) * | 1971-03-01 | 1973-02-20 | Amf Inc | Application assembly for tread building apparatus |
US3892616A (en) * | 1972-03-10 | 1975-07-01 | Gen Tire & Rubber Co | Index means for tire-building apparatus |
US3870227A (en) * | 1972-08-10 | 1975-03-11 | Ranco Inc | Comfort temperature control system for a zone |
JPS57201640A (en) * | 1981-06-08 | 1982-12-10 | Sumitomo Rubber Ind Ltd | Forming drum for elastomer band |
US6261174B1 (en) * | 1998-12-08 | 2001-07-17 | Thomas C. Kuehn | Air flow control apparatus and method |
US6676789B1 (en) * | 1999-05-20 | 2004-01-13 | The Goodyear Tire And Rubber Company | Tire building apparatus |
DE60218212T2 (de) * | 2001-11-12 | 2007-11-22 | Bridgestone Corp. | Herstellungsverfahren für nicht vulkanisierte kautschukelemente und reifen |
JP3908572B2 (ja) * | 2002-03-18 | 2007-04-25 | 株式会社東芝 | 半導体素子 |
US7161208B2 (en) * | 2002-05-14 | 2007-01-09 | International Rectifier Corporation | Trench mosfet with field relief feature |
EP1615219A1 (en) * | 2004-06-10 | 2006-01-11 | Broadcom Corporation | Creating a DVD compliant stream directly from encoder hardware |
-
2004
- 2004-06-08 JP JP2004169733A patent/JP4454396B2/ja not_active Expired - Fee Related
-
2005
- 2005-04-28 US US11/628,364 patent/US20080093011A1/en not_active Abandoned
- 2005-04-28 DE DE602005021100T patent/DE602005021100D1/de active Active
- 2005-04-28 EP EP05736976A patent/EP1754594B1/en not_active Ceased
- 2005-04-28 MX MXPA06014050A patent/MXPA06014050A/es active IP Right Grant
- 2005-04-28 WO PCT/JP2005/008156 patent/WO2005120814A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2003340935A (ja) * | 2002-05-29 | 2003-12-02 | Yokohama Rubber Co Ltd:The | 空気入りタイヤの製造方法、その製造方法により製造された空気入りタイヤ及びその製造方法に使用するストリップ材冷却装置 |
JP2004025533A (ja) * | 2002-06-24 | 2004-01-29 | Yokohama Rubber Co Ltd:The | タイヤ構成部材の成形方法 |
JP2004074730A (ja) * | 2002-08-22 | 2004-03-11 | Yokohama Rubber Co Ltd:The | ストリップ材供給方法 |
Non-Patent Citations (1)
Title |
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See also references of EP1754594A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007203903A (ja) * | 2006-02-02 | 2007-08-16 | Bridgestone Corp | 重荷重用空気入りタイヤ |
CN105500745A (zh) * | 2014-09-27 | 2016-04-20 | 青岛软控机电工程有限公司 | 翻胎缠绕机机头及翻胎挤出缠绕装置 |
Also Published As
Publication number | Publication date |
---|---|
EP1754594B1 (en) | 2010-05-05 |
EP1754594A4 (en) | 2008-03-05 |
MXPA06014050A (es) | 2007-01-31 |
JP4454396B2 (ja) | 2010-04-21 |
DE602005021100D1 (de) | 2010-06-17 |
EP1754594A1 (en) | 2007-02-21 |
US20080093011A1 (en) | 2008-04-24 |
JP2005349587A (ja) | 2005-12-22 |
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