WO1999004954A2 - Improvements in tyre manufacture - Google Patents
Improvements in tyre manufacture Download PDFInfo
- Publication number
- WO1999004954A2 WO1999004954A2 PCT/GB1998/002203 GB9802203W WO9904954A2 WO 1999004954 A2 WO1999004954 A2 WO 1999004954A2 GB 9802203 W GB9802203 W GB 9802203W WO 9904954 A2 WO9904954 A2 WO 9904954A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spindles
- cord
- calender
- rollers
- fabric
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
-
- 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)
- B29D30/38—Textile inserts, e.g. cord or canvas layers, for tyres; Treatment of inserts prior to building the tyre
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
- D04H3/04—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/12—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with filaments or yarns secured together by chemical or thermo-activatable bonding agents, e.g. adhesives, applied or incorporated in liquid or solid form
Definitions
- the present invention concerns improvements in tyre manufacture, particularly the manufacture of radial tyre carcass reinforcement fabric.
- the carcass reinforcement of a radial tyre comprises one or more plies of weftless fabric which, in the shaped tyre, has all the reinforcement cords lying in substantially radial planes so that each cord of the fabric extends from tyre bead to tyre bead around the tyre cross section.
- U.K. Patent Applications GB-A-2212441 and GB-A-2212529 describe a system whereby a tape having longitudinally extending cords is wrapped helically around a mandrel. The wound tape is then cut transversely to produce a flat sheet having reinforcing cord extending thereacross. The flat sheet can then be used as a ply in tyre manufacture.
- U.K. Patent 995613 describes a similar system whereby the wound tape is continuously fed off the mandrel and through cutters. The strips formed thereby have cords running transverse thereof and they can be used as ply fabric in tyre manufacture.
- U. K. Patent Application GB-A-2132573 describes a method for manufacture of a tyre ply material, in which a cord is wound helically around a cylindrical former. The winding is then covered by a helical winding of uncured rubber tape, and then the composite winding is cut longitudinally of the former to produce a rectangular piece of ply material.
- the strength of the ply fabric formed by the systems described relies on the strength of joints between lapped tape windings.
- United Kingdom Patent Application GB-A-2159185 describes apparatus and a method of manufacturing reinforcing fabric ply for pneumatic tyres, comprising a pair of parallel spindles rotating in the same direction, each spindle being surrounded by a helical sleeve rotating in the opposite direction to the spindles.
- An arm having a bobbin at one end thereof winds cord onto the two spindles, and a fabric is created thereby. The fabric is moved off of the spindles by means of the travel of the cord along the helical sleeves.
- Similar arrangements are disclosed in UK Patent 1596332.
- An arrangement for constructing ply from a bobbin which is stationary to allow ease of access is illustrated in UK Patent 1301788.
- apparatus for manufacturing fabric comprising a body having a pair of parallel and axially rotatable spindles, each spindle having a helical channel for training cord therealong, a housing mounted on the body and rotatable therewith about an axis of rotation parallel with the spindles, the housing comprising a dispensing arm for winding cord around said spindles and cord delivery means for delivering cord to said dispensing arm, said delivery means comprising a mounting for receiving a bundle of cord and means defining a cord delivery route between the mounting and the dispensing arm, said delivery means being radially spaced from the axis of rotation.
- the central axial region of the housing may be made available for other purposes.
- the apparatus comprises anchoring means for anchoring the body against rotation.
- the anchoring means comprises a shaft passing through the housing at the axis of rotation, the housing being borne on the shaft for rotation thereabout.
- the shaft is tubular.
- the housing has two dispensing arms for winding cord around the spindles.
- a fabric may be achieved which has a favourably dense construction, namely a double helical structure.
- the arms are diametrically opposed. In that case, the arms balance each other to reduce energy consumption and wear at the bearing.
- the advantage of the invention that the central axial region of the housing may be made available for other purposes, is particularly important in the above case where two dispensing arms are provided. That is because where a plurality of lines are to be delivered along the housing, there is an increased risk of tangling.
- the apparatus may further include a calender comprising two rollers rotatable on axes perpendicular to the axes of rotation of the spindles, the rollers defining a nip, and coating means for coating fabric passing through the nip of the calender with a layer of elastomeric material, wherein each of the spindles has a distal end towards which cord is trained in use, each distal end being directed into the nip between the rollers, such that the entire width of a fabric wound on the spindles in use is fed into the calender.
- a calender comprising two rollers rotatable on axes perpendicular to the axes of rotation of the spindles, the rollers defining a nip, and coating means for coating fabric passing through the nip of the calender with a layer of elastomeric material, wherein each of the spindles has a distal end towards which cord is trained in use, each distal end being directed into
- the distal ends of the spindles may be tapered. In that way, cord wound on the spindles can be introduced deeper into the nip of the calender. Furthermore, the taper allows the wound cord to be removed from the spindle more easily.
- the distal ends of the spindles may be trapped in the nip of the calender. That allows an advantageous positive location of the spindles in the nip of the calender. That may not be necessary in the case that the anchoring means comprises a shaft passing through the housing at the axis of rotation.
- the calender comprises four rollers, including two inner rollers constituting the two above described rollers defining the nip therebetween and two outer rollers outside said two inner rollers, each of said outer rollers defining a nip with a respective inner roller.
- the coating means comprises means for dispensing elastomeric material to each of the nips defined between a respective inner roller and outer roller, such that elastomeric material can be introduced onto the surface of each inner roller for transfer to fabric passing through the calender.
- the apparatus comprises pressing means arranged to receive coated fabric from said calender for pressing said fabric.
- tension relieving means is provided between said calendar and said pressing means.
- the apparatus comprises a second calender for receiving coated fabric and applying a liner thereto.
- the two dispensers may be diametrically opposed relative to the axis of rotation of the dispensing arm. That is advantageous in that the arm will be balanced for rotation, thereby reducing wear on bearings.
- the spindles may be tubular, such that a bead wire can be delivered from the distal end of each of said tubular spindles in use.
- bead wires can be interlaced with the cord at each edge of the ply, thereby providing a more integrated product.
- further bead wires will be added to the construction of the tyre, but the bead wire within the ply is useful for purposes of location.
- the dispensing arm and the spindles are preferably rotatable in the same sense.
- Figure 1 is a side elevation of a ply manufacturing station including a winding apparatus according to a specific embodiment of the present invention
- Figure 2 is a side elevation similar to that illustrated in figure 1 of another ply manufacturing station;
- FIG. 3 is a detail plan of the winding apparatus illustrated in figures 1 and 2;
- Figure 4 is a schematic view of the winding apparatus of preceding drawings showing a preferred mode of operation.
- a ply forming station 10 comprises a ply winding apparatus 12, a rubberising calender 14, a press 16, a lining calender 18 and a trimmer 20. Those components are aligned in the order stated above.
- a turret 22 comprises a base 24 and front and rear upstanding members 26, 28.
- a generally horizontal axle 30 is journalled in the upper end of the rear upstanding member 28, and extends towards the front of the turret 22.
- a tubular sleeve 32 is arranged coaxially with the axle 30, and is journalled, via bearings 34, in the front upstanding member 26.
- the sleeve 32 is rotatable relative to the turret 22.
- apair of arms 36 extend radially outwardly.
- the arms 36 are diametrically opposed.
- Each arm 36 has a radial portion, and at the end of the radial portion a portion at right angles thereto, i.e. parallel with the axis of rotation of the sleeve 32.
- the axial portion extends forward of the turret 22.
- a similar pair of arms 38 are mounted thereon; they are oriented generally towards the rear of the turret 22.
- the arms 36, 38 are generally coplanar.
- a front plate 40 is mounted on the front end of the axle 30, adjacent the front end of the sleeve 32.
- the front plate 40 is generally planar and is oriented in a plane at right angles to the axle 30.
- the front plate 40 comprises a pair of spindles 42 extending forwardly of the front plate 40 and parallel to the axle 30. The spindles 42 are equally spaced either side of the axle 30.
- Each spindle 42 has a helical groove in the surface thereof. Each spindle is arranged to rotate relative to the plate; drive to the spindles 42 is conducted via shafts through the axle 30 and side shafts 44. In order to ensure a smooth progression of the ply windings from the spindles, the spindles 42 should be arranged to rotate at matched speed and at twice the rotational speed of the dispensing arms 36, 38.
- Each of the arms 38 has a radially inwardly extending pin 46 on which is provided a bobbin 48 of cord.
- the sleeve 32 has a pair of parallel axial channels 50, diametrically opposed about the axis of the sleeve 32, and along which cord is conducted from respective bobbins 48 to the front of the sleeve 32 and therefrom to the tips of the arms 36.
- the arms 36, 38 and the channels 50 are all provided with pulley wheels 52 to assist the passage of cord to the tips of the arms 36.
- the sleeve 32 is rotated by a drive motor situated on the turret 22.
- the drive is transferred by means of a belt 54 riding in a flanged wheel 56.
- cord is dispensed from the tips of the arms 36, and wound around the spindles 42.
- the cord will ride in the helical grooves, and by rotation of the spindles, the wound cords will traverse away from the front plate towards the ends of the spindles 42.
- the rubberising calender 14 is arranged to receive wound cord from the winding apparatus 12.
- the calender 14 comprises upper and lower inner rollers 60, 62, arranged in parallel.
- the inner rollers 60, 62 are oriented at right angles to the apindles 42, and define a nip 64 into which the ends of the spindles 42 extend. Hence, cords wound on the spindles are delivered into the nip 64.
- the inner rollers 60, 62 in use rotate in opposite directions so as to draw the wound cord from the spindles and into the nip 64.
- Each of the inner rollers 60, 62 has a respective outer roller 66 arranged thereagainst.
- the rubberising calender 14 is known as a "four bowl” calender.
- a delivery outlet 68 is arranged between each inner and outer roller combination 60, 62, 66, and out of which is delivered pellets of elastomeric material. Those pellets are squeezed between the inner and outer roller and become a coating on the surface of the inner roller. That coating is transferred in use to either side of the wound cord passing through the nip 64 between the inner rollers 60, 62.
- the calender 14 further includes an accumulator 69 to which the coated cord is passed after existing the nip 64.
- the accumulator prevents minor variations in speed in the process from causing ply to break.
- the press -16 comprises a top plate 70 and a bottom plate 72, between which successive portions of the coated wound cord exiting the rubberising calender 14 are pressed. The effect of that is to push the elastomeric material through the windings of the wound cord to achieve strike through. In that way, a ply material having cord embedded therein is formed.
- the lining calender 18 is situated to receive ply from the press 16.
- the lining calender 18 is a three bowl calender, in that it comprises three rollers 74, 76, 78 arranged one above another in parallel. The ply is passed between the upper two rollers 74, 76, in use.
- the lowest roller 78 is served by a delivery outlet 80 which deposits pellets of elastomeric material between the lowest roller 78 and the roller 76 adjacent thereto. The deposited material forms a layer on the adjacent roller 76 which is subsequently transferred to the ply passing through the calender 18. Accordingly, the calender 18 forms a lining layer on the ply.
- the trimmer 20 comprises a pair of cutters 82 arranged one each side of a roller track 84 .
- the cutters trim each edge of the ply passing therethrough, and so produce a parallel sided product.
- a trimming removal duct 86 is arranged to remove trimmings; trimmed elastomeric material can be recycled for future use.
- the station illustrated in figure 2 is similar to that illustrated in figure 1. Those parts thereof which are common to the two stations are given the same reference numeral and will not be described further.
- the station 100 of figure 2 includes a ply winding apparatus 12, a rubberising calender 14, a press 16, a trimmer 20 and a slitter 90. Those components are aligned in the order stated above. It will be appreciated that the station 100 does not include a lining calender 18, but that one could be provided if necessary.
- the slitter 90 comprises a plurality of parallel slitting heads 92 arranged across the width of the ply to draw off a plurality of parallel strips of the ply material. Therefore, for convenience a number of small components may be produced out of a wide strip of ply material.
- the slitter 90 comprises a plurality of transporters 94 to separate and transport away the strips formed thereby.
- Figure 4 shows a winding apparatus in schematic form.
- the components of the winding apparatus, and portions of a calender, have been labelled with reference numerals appropriate to the specific embodiment described above.
- Figure 4 shows some further features of the specific embodiment of the invention.
- the spindles 42 of figure 4 are tubular, and bead wire is delivered down the tube centres. In that way the ply formed by the apparatus of figure 4 may incorporate bead wire at each edge thereof. Clearly, with bead wire being incorporated at each edge of the ply, the trimmer will need to be finely adjusted or omitted altogether.
- the apparatus described above is advantageous because in particular the channels 50 described in relation to figure 3 offset the cord delivery route from the axis. That is possible because the bobbins are rotated with the arms 36 from which cord is dispensed.
- a bobbin was mounted directly onto the turret, which meant that the cord had to be fed through the sleeve at the centre of rotation in order to avoid entanglement.
- the axis of rotation is now relieved for use in other ways, such as the transmission of power to the spindles.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Composite Materials (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Tyre Moulding (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU84551/98A AU8455198A (en) | 1997-07-23 | 1998-07-22 | Improvements in tyre manufacture |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9715460A GB2327436A (en) | 1997-07-23 | 1997-07-23 | Apparatus for making fabric for tyres |
GB9715460.3 | 1997-07-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1999004954A2 true WO1999004954A2 (en) | 1999-02-04 |
WO1999004954A3 WO1999004954A3 (en) | 1999-04-08 |
Family
ID=10816281
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1998/002203 WO1999004954A2 (en) | 1997-07-23 | 1998-07-22 | Improvements in tyre manufacture |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU8455198A (en) |
GB (1) | GB2327436A (en) |
WO (1) | WO1999004954A2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6131044B2 (en) * | 2012-12-28 | 2017-05-17 | ユニ・チャーム株式会社 | Stretchable sheet manufacturing apparatus and manufacturing method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR514547A (en) * | 1915-12-17 | 1921-03-12 | Tyre Machinery Syndicate Ltd | Improvements to tire casings and the processes and apparatus for manufacturing them |
GB649335A (en) * | 1947-02-26 | 1951-01-24 | Us Rubber Co | Improvements in apparatus for making wire tyre fabric |
FR2118877A1 (en) * | 1970-12-23 | 1972-08-04 | Isere Nord | Non-woven net fabric - formed by winding weft yarn helically around warp yarns |
FR2351040A1 (en) * | 1976-05-10 | 1977-12-09 | Rhone Poulenc Ind | Straight lengths of hollow fibres for dialysers, etc. - from windings lowered successively along guides into vibrated containers |
US4576672A (en) * | 1982-04-12 | 1986-03-18 | Kurashiki Boseki Kabushiki Kaisha | Apparatus for the production of reinforcing non-woven fabrics for composites |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3646647A (en) * | 1970-03-19 | 1972-03-07 | Deering Milliken Res Corp | Apparatus for the production of nonwoven materials |
IE46604B1 (en) * | 1977-04-27 | 1983-07-27 | Chomarat & Cie | Method and apparatus for the manufacture of non-woven textile fabrics |
GB8413092D0 (en) * | 1984-05-22 | 1984-06-27 | Apsley Metals Ltd | Tyre reinforcement fabrics |
JPS6445627A (en) * | 1987-08-14 | 1989-02-20 | Asahi Chemical Ind | Manufacture of topping sheet for reinforcing tire |
GB2212529B (en) * | 1987-11-13 | 1991-09-25 | Holroyd Associates Ltd | Improvements in and relating to the manufacture of ply fabric material |
-
1997
- 1997-07-23 GB GB9715460A patent/GB2327436A/en not_active Withdrawn
-
1998
- 1998-07-22 WO PCT/GB1998/002203 patent/WO1999004954A2/en active Application Filing
- 1998-07-22 AU AU84551/98A patent/AU8455198A/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR514547A (en) * | 1915-12-17 | 1921-03-12 | Tyre Machinery Syndicate Ltd | Improvements to tire casings and the processes and apparatus for manufacturing them |
GB649335A (en) * | 1947-02-26 | 1951-01-24 | Us Rubber Co | Improvements in apparatus for making wire tyre fabric |
FR2118877A1 (en) * | 1970-12-23 | 1972-08-04 | Isere Nord | Non-woven net fabric - formed by winding weft yarn helically around warp yarns |
FR2351040A1 (en) * | 1976-05-10 | 1977-12-09 | Rhone Poulenc Ind | Straight lengths of hollow fibres for dialysers, etc. - from windings lowered successively along guides into vibrated containers |
US4576672A (en) * | 1982-04-12 | 1986-03-18 | Kurashiki Boseki Kabushiki Kaisha | Apparatus for the production of reinforcing non-woven fabrics for composites |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 013, no. 234 (M-832), 30 May 1989 & JP 01 045627 A (ASAHI CHEM IND CO LTD), 20 February 1989 * |
Also Published As
Publication number | Publication date |
---|---|
WO1999004954A3 (en) | 1999-04-08 |
GB9715460D0 (en) | 1997-09-24 |
AU8455198A (en) | 1999-02-16 |
GB2327436A (en) | 1999-01-27 |
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