WO2004030899A1 - タイヤ用コード補強層の形成方法およびコード補強層形成装置 - Google Patents
タイヤ用コード補強層の形成方法およびコード補強層形成装置 Download PDFInfo
- Publication number
- WO2004030899A1 WO2004030899A1 PCT/JP2003/012611 JP0312611W WO2004030899A1 WO 2004030899 A1 WO2004030899 A1 WO 2004030899A1 JP 0312611 W JP0312611 W JP 0312611W WO 2004030899 A1 WO2004030899 A1 WO 2004030899A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cord
- rubber
- forming
- drum
- tire
- 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
- B29D30/3057—Applying the layers; Guiding or stretching the layers during application by feeding cut-to-length pieces in a direction inclined with respect to the drum axis and placing the pieces side-by-side 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)
- B29D30/08—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
- B29D30/305—Applying the layers; Guiding or stretching the layers during application by feeding cut-to-length pieces in a direction parallel to the drum axis and placing the pieces side-by-side 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)
- B29D30/08—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
- B29D2030/3064—Details, accessories and auxiliary operations not otherwise provided for
- B29D2030/3085—Details, accessories and auxiliary operations not otherwise provided for the layers being applied being already cut to the appropriate length, before the application step
Definitions
- the present invention relates to a method for forming a tire cord reinforcing layer constituting a carcass or a belt of a tire and a cord reinforcing layer forming apparatus used in the method, and is particularly suitable for producing small lot size tires.
- the present invention relates to a method for forming a tire cord reinforcing layer capable of improving the level of tires, and a cord reinforcing layer forming apparatus therefor.
- a conventional method of forming a cord reinforcing layer constituting a carcass or a belt of a tire is as follows. That is, first, a cord woven in an interdigitated form is passed between calendar rolls at high speed, rubber is coated on both sides of a cord, and the cord is wound around a large reel and temporarily stored as an intermediate stock. After that, the reel is fed out from the large reel and cut into small pieces each having a predetermined length D with a bias cutter, and these small pieces are joined in a direction intersecting the direction of the cord to form a continuous sheet having a width of D. Then, wind it up on a small reel and store it as an intermediate inventory.
- the cord reinforcing layer of the tire to be continuously formed can be sequentially formed.
- this conventional method is efficient for mass-producing tires of the same size, but is a small-lot production system that can respond to diversifying consumer needs.
- small lots of tires must be molded while frequently changing the size, and the above-mentioned method requires a large intermediate stock of large and small rolled tires, Since the equipment is also for mass production, it takes a lot of time to switch the size, and the smaller the unit, the more time wasted in switching the size.
- the length corresponding to the total width of the cord reinforcing layer on the forming drum can be formed by cutting the ripon strip into pieces and bonding the cut pieces on the forming drum by the number obtained by dividing the circumference of the forming drum by the ripon strip width w.
- This method can be realized by setting the relationship between the circumference of the forming drum and the width of the repone strip so that the circumference of the forming drums of various sizes is all an integral multiple of the width w of the ripon strip. Can be.
- This method can be applied to the production of tires of various sizes with a single type of repong strip width w, so there is no need to prepare repong strips of various widths, reducing intermediate stock and cutting length. It is possible to adapt to the total width of various cord reinforcement layers simply by changing the size, and it does not take much time to switch the size, so that the problem of the conventional method can be solved, but the accuracy of the repong width is not good. Then, on the periphery of the molding drum, a joining portion occurs in which a gap is formed between the ripon pieces and the ribbon pieces that are adjacent to each other in the circumferential direction, and a gap is formed between them.
- This method is also an improvement over the conventional method in that it can cope with the production of multi-size tires with a single type of repong width, thus reducing intermediate stock. Since the length corresponds to the total width of the cord reinforcing layer on the forming drum, the number of special drums is required at least as many as the total width of the cord reinforcing layer, and the cost and space for that are huge. It will be something. Furthermore, when winding the cut piece around the forming drum, it is difficult to join the front and rear ends of this piece in the circumferential direction on the forming drum without gaps and without overlapping due to the expansion and contraction of the piece to be wound. There is also a problem that the connecting portion becomes a non-uniform portion and lowers the level of the uniformity.
- the present invention has been made in view of such problems, and is capable of flexibly responding to small-lot production, and capable of producing a tire having a high uniformity level. It is an object of the present invention to provide a method for forming a cord reinforcing layer and a cord reinforcing layer forming apparatus therefor. Disclosure of the invention
- the present invention has been made to achieve the above object, and its gist configuration and operation will be described below.
- the present invention relates to a tire cord reinforcing layer for applying a rubber-coated cord of a predetermined length, which is previously coated with rubber, on a tire molding drum one by one in parallel or at an angle to the axis of the molding drum. It is a forming method.
- the cords with rubber are pasted one by one on a forming drum, so that a large-sized cord is applied as in the conventional method of forming a cord reinforcing layer for a tire.
- Intermediate inventory for small rolls is no longer required, and different tire sizes can be handled by simply changing the cutting length of the rubberized cord on the forming drum.
- the cords with rubber can be evenly arranged on the circumference of the molding drum, so that the uniformity level can be improved.
- the rubber cords of the outer layer are press-fitted between the rubber cords of the inner layer.
- the present invention relates to a cord reinforcing layer forming apparatus used in the method for forming a cord reinforcing layer for a tire according to (1) or (2),
- a cord sticking and cutting machine for sticking rubberized cords one by one on a molding drum and cutting a continuous rubberized cord to the predetermined length, a relay drum for feeding out cords from a cord reel and sending them to a cord sticking and cutting machine.
- a rubber coating machine that continuously coats the cord with rubber between the code reel and the relay drum, and a festival that adjusts the excess and deficiency of the rubberized cord that occurs between the cord pasting and cutting machine and the relay drum.
- the cord reinforcing layer forming apparatus has the above-described structure, and In addition to easily realizing the method for forming the tire cord reinforcing layer of the above, the process from unwinding of the cord to pasting the cord with a predetermined length of rubber onto the forming drum can be performed continuously. Intermediate inventory space can be further reduced.
- FIG. 1 is a schematic perspective view showing a configuration of a cord reinforcing layer forming apparatus according to an embodiment of the present invention.
- FIG. 2 is a schematic side view showing a modified example of the present embodiment, taken along the line 11-11 in FIG.
- FIG. 3 is a schematic side view corresponding to the view taken along the line II-II in FIG.
- FIG. 4 is a schematic perspective view of a forming drum showing a method of forming a belt cord reinforcing layer on a forming drum for forming a belt tread band.
- FIG. 1 is a schematic perspective view showing a configuration of a cord reinforcing layer forming apparatus 1 for forming a cord reinforcing layer of a carcass of a radial tire
- FIG. 2 is a schematic side view showing an arrow 11-11 in FIG. It is.
- the cord reinforcing layer forming apparatus 1 is a cord sticking and cutting device that sticks the cords G with rubber one by one on a forming drum 2 for force casband molding and cuts the cords G with rubber into a predetermined length 1.
- the Machine 3 a reel window 5 that rotatably supports the code reel 4, and a cord U that is not covered with rubber are unreeled from the cord reel 4 and continuously fed to the cord pasting and cutting machine 3.
- the relay drum 6 to be sent out, the rubber coating machine 7 that continuously coats the rubber on the cord U between the cord reel 4 and the relay drum 6, and the relay that operates continuously with the intermittently operating cord sticking and cutting machine 3 It is equipped with a festival 8 for adjusting the excess or deficiency of the rubber cord G generated between the drum 6 and the drum.
- the cord pasting and cutting machine 3 is equipped with a cutting machine 12 for cutting the cord G with rubber, a pressing port 13 for pushing the cord G with rubber against the molding drum, and mounting these, in parallel with the axis of the molding drum 2.
- the movable base 11 includes a reciprocating movable base 11, and a cutout 12 and a pressing port 13 are attached to the movable base 11 so as to be able to approach and separate from the forming drum 2.
- the rubber coating machine 7 has an insulation head 15 having a through-hole through which the cord passes and continuously covering the cord with the rubber in the through-hole. And a rubber extruder 16 for continuously supplying the coated rubber.
- Fig. 1 shows that the inner liner N is already affixed to the molding drum 2, and a plurality of rubber cords G cut to a predetermined length 1 are arranged at a predetermined pitch on a part of the circumference in the circumferential direction.
- the cord sticking and cutting machine 3 has its moving base 11 positioned at the right end of the forming drum 2 and also has a posture in which the cutting tool 12 and the pressing roller 13 are separated from the forming drum 2. The state is shown.
- the forming drum 2 is rotated by a small angle corresponding to the circumferential bonding pitch of the cord G with rubber, and the moving base 11 of the code bonding and cutting machine 3 is moved to the base of the forming drum 2. Displaced to the left along direction X parallel to the axis. At this time, the cord G with rubber held by the pressing roller 13 of the cord attaching / cutting machine 3 also moves to the left together with the pressing roller 13, so that the weight 14 of the festoon 8 rises, and the festoon 8 Code savings will decrease.
- the pressing roller 13 holding the tip of the cord G with rubber is brought close to the forming drum 2, and the tip of the cord G with rubber is pressed onto the inner liner N and adhered.
- the movable base 11 is displaced to the right at a constant speed while the pressing roller 13 is pressed against the molding drum 2, the rubber G cord G is sequentially moved from left to right by the rolling of the pressing roller 13. And pressed by the inner liner N.
- the moving base is at the left end in Fig. 1, lower the cutting edge 12 to cut the cord G with rubber. In this way, the cord G with rubber having a length of 1 can be arranged on the molding drum 2.
- the rubber cord G is supplied to the festoon 8 by the relay drum 6, and the relay drum 6 winds up the rubber cord G at the same time as winding the rubber cord G.
- the released rubberized cord G is configured to be discharged and is retracted by the weight 14 of the festoon 8 and stored in the festoon 8. Since the cord of the rubber cord G wound up on the relay drum 6 is directly connected to the cord reel 4, the cord U is fed from the cord reel 4 by winding the relay drum 6, but the cord U is a cord reel. After being fed from 4, the rubber passes through a through hole provided in the insulation head 15 of the rubber covering machine 7, and at this time, the rubber supplied from the rubber extruder 16 is covered around the cord U.
- the front end of the rubber cord G is attached to the molding drum 2 and the rear end is cut to form a rubber cord G having a predetermined length 1. Placed on Drum 2, but instead of attaching rubber cord G to molding drum 2, cut rubber cord G to length 1 and then stick this cut to molding drum You may.
- FIG. 3 is a schematic side view showing a modification of the present embodiment and corresponding to a view taken in the direction of arrows in FIG.
- the cords G with rubber cut into a predetermined length 1 are formed on the forming drum 2. It is formed in two layers in the radial direction, and the circumferential pitch of the rubber-attached cord G in each layer is a pitch in which a slight gap d is provided between the cords G adjacent to each other in the circumferential direction. Then, while pressing the press-in roller 24 with the press-in cylinder 23, the press-in cylinder is pressed.
- the rubber-coated code G of the radially outer layer of the two layers is changed to that of the radially inner layer.
- the cord G can be press-fitted into a gap between the cords G, and a single layer of cord reinforcing layer can be formed in which the circumferentially arranged pitch of the rubberized cord G is half of the pitch when the cords are arranged in two layers.
- the embodiment of the present invention has been described by taking the cord reinforcing layer constituting the radial carcass as an example.
- the present invention can be applied to this cord reinforcing layer.
- a belt for a radial tire is formed. It can be applied to code reinforcement layers.
- the extending direction of the rubber cord V is inclined with respect to the axis of the molding drum 22.
- the rollers 33 need to be moved in an arc shape, but the other points can be performed in the same manner as the formation of the carcass cord reinforcing layer.
- a rubber-coated cord of a predetermined length which is previously coated with rubber, is attached one by one on a tire forming drum, so that it is flexibly used for small-lot production. In addition to responding, it is possible to manufacture tires with a high uniformity level.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tyre Moulding (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03751306A EP1555113A4 (en) | 2002-10-01 | 2003-10-01 | METHOD AND APPARATUS FOR FORMING A WIRE REINFORCING LAYER CABLES FOR TIRES |
US10/529,494 US20060137803A1 (en) | 2002-10-01 | 2003-10-01 | Method and apparatus for forming cord reinforcement layer for tire |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-288659 | 2002-10-01 | ||
JP2002288659 | 2002-10-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004030899A1 true WO2004030899A1 (ja) | 2004-04-15 |
Family
ID=32063685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/012611 WO2004030899A1 (ja) | 2002-10-01 | 2003-10-01 | タイヤ用コード補強層の形成方法およびコード補強層形成装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20060137803A1 (ja) |
EP (1) | EP1555113A4 (ja) |
CN (1) | CN1711164A (ja) |
WO (1) | WO2004030899A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7344614B2 (en) * | 2004-11-01 | 2008-03-18 | The Goodyear Tire & Rubber Company | Tire breaker strip application method and tire fabricated therefrom |
WO2009025028A1 (ja) * | 2007-08-21 | 2009-02-26 | Toyo Tire & Rubber Co., Ltd. | ベルト材の製造方法及び装置 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2155481B1 (en) | 2007-06-11 | 2012-04-18 | Pirelli Tyre S.P.A. | Process and apparatus for manufacturing tyres |
EP2170593B1 (en) * | 2007-06-29 | 2011-09-28 | Pirelli Tyre S.P.A. | Process and apparatus for manufacturing tyres for vehicle wheels |
WO2010097671A1 (en) * | 2009-02-24 | 2010-09-02 | Pirelli Tyre S.P.A. | Process for manufacturing tyres for vehicle wheels |
EP2640569B1 (en) * | 2010-11-18 | 2017-07-19 | Pirelli Tyre S.p.A. | Process and apparatus for manufacturing tyres for vehicle wheels |
NL2005819C2 (nl) * | 2010-12-06 | 2012-06-07 | Vmi Holland Bv | Lasinrichting en werkwijze voor het aan elkaar lassen van stroken van rubbermateriaal. |
CN102619037A (zh) * | 2011-01-30 | 2012-08-01 | 昆山大阳机电设备制造有限公司 | 涂布机蓄料架 |
US8783317B1 (en) * | 2013-03-14 | 2014-07-22 | Richard O. Rhodes | Method and apparatus for producing polymer solar collectors and heat exchangers |
EP3763507A4 (en) * | 2018-04-09 | 2021-12-08 | Sumitomo Rubber Industries, Ltd. | COATED CABLE MANUFACTURING DEVICE, AND COATED CABLE MANUFACTURING METHOD |
CN108688209B (zh) * | 2018-06-22 | 2024-02-06 | 联亚智能科技(苏州)有限公司 | 一种敷胶钢丝带缠绕装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4804436A (en) * | 1986-06-02 | 1989-02-14 | Compagine Generale Des Etablissements Michelin | Machine for the manufacture of a tire reinforcement |
US5032198A (en) * | 1987-06-18 | 1991-07-16 | Sumitomo Rubber Industries, Ltd. | Method for manufacturing an assembly of a belt, a band, and a tread rubber |
EP0492918A2 (en) * | 1990-12-28 | 1992-07-01 | Bridgestone Corporation | Method of forming ply member |
US5395476A (en) * | 1992-08-07 | 1995-03-07 | Sedepro | Machine for the manufacture of a crown reinforcement for tires |
US20010020518A1 (en) * | 2000-02-01 | 2001-09-13 | Sedepro | Oscillating arm apparatus for manufacturing a tire reinforcement from a single cord |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2134244B1 (ja) * | 1971-04-28 | 1973-12-28 | Michelin & Cie | |
US5192390A (en) * | 1987-11-13 | 1993-03-09 | Bridgestone/Firestone Inc. | Mandrel means |
US5200009A (en) * | 1989-07-07 | 1993-04-06 | The Uniroyal Goodrich Tire Company | Joining reinforced elastomeric sheet material |
US6457504B1 (en) * | 1998-07-31 | 2002-10-01 | Pirelli Pneumatici S.P.A. | Carcass structure for vehicle tires |
US6849146B2 (en) * | 2000-10-25 | 2005-02-01 | Toyo Tire & Rubber Co., Ltd. | Carcass ply producing apparatus, carcass ply producing method and pneumatic tire |
AU2002216363A1 (en) * | 2001-11-27 | 2003-06-10 | Rodolfo Noto | Method for forming a belt structure for tyres of vehicle wheels and radial tyre including such belt |
-
2003
- 2003-10-01 EP EP03751306A patent/EP1555113A4/en not_active Withdrawn
- 2003-10-01 CN CN200380103164.7A patent/CN1711164A/zh active Pending
- 2003-10-01 US US10/529,494 patent/US20060137803A1/en not_active Abandoned
- 2003-10-01 WO PCT/JP2003/012611 patent/WO2004030899A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4804436A (en) * | 1986-06-02 | 1989-02-14 | Compagine Generale Des Etablissements Michelin | Machine for the manufacture of a tire reinforcement |
US5032198A (en) * | 1987-06-18 | 1991-07-16 | Sumitomo Rubber Industries, Ltd. | Method for manufacturing an assembly of a belt, a band, and a tread rubber |
EP0492918A2 (en) * | 1990-12-28 | 1992-07-01 | Bridgestone Corporation | Method of forming ply member |
US5395476A (en) * | 1992-08-07 | 1995-03-07 | Sedepro | Machine for the manufacture of a crown reinforcement for tires |
US20010020518A1 (en) * | 2000-02-01 | 2001-09-13 | Sedepro | Oscillating arm apparatus for manufacturing a tire reinforcement from a single cord |
Non-Patent Citations (1)
Title |
---|
See also references of EP1555113A4 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7344614B2 (en) * | 2004-11-01 | 2008-03-18 | The Goodyear Tire & Rubber Company | Tire breaker strip application method and tire fabricated therefrom |
WO2009025028A1 (ja) * | 2007-08-21 | 2009-02-26 | Toyo Tire & Rubber Co., Ltd. | ベルト材の製造方法及び装置 |
JP4938854B2 (ja) * | 2007-08-21 | 2012-05-23 | 東洋ゴム工業株式会社 | ベルト材の製造方法及び装置 |
Also Published As
Publication number | Publication date |
---|---|
CN1711164A (zh) | 2005-12-21 |
US20060137803A1 (en) | 2006-06-29 |
EP1555113A1 (en) | 2005-07-20 |
EP1555113A4 (en) | 2010-01-13 |
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