US3185607A - Method and apparatus for fitting bands of fabric or other material around wires for outer covers of pneumatic tires - Google Patents

Method and apparatus for fitting bands of fabric or other material around wires for outer covers of pneumatic tires Download PDF

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Publication number
US3185607A
US3185607A US201908A US20190862A US3185607A US 3185607 A US3185607 A US 3185607A US 201908 A US201908 A US 201908A US 20190862 A US20190862 A US 20190862A US 3185607 A US3185607 A US 3185607A
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United States
Prior art keywords
drum
fabric
ring
pneumatic tires
material around
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Expired - Lifetime
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US201908A
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English (en)
Inventor
Nebout Noel
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Dunlop France SA
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Dunlop France SA
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    • 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)
    • B29D30/48—Bead-rings or bead-cores; Treatment thereof prior to building the tyre
    • B29D30/50—Covering, e.g. by winding, the separate bead-rings or bead-cores with textile material, e.g. with flipper strips

Definitions

  • the present invention relates to a method and a device for folding over each other portions of a band or strip of rubber fabric or other similar material around a wire for outer covers of pneumatic tires, in such a manner as to provide a composite ring unit having the aspect of a truncated cone, with the sides thereof presenting a wel defined shape and slope.
  • the method according to the invention comprises essentially placing a strip or band of fabric, forming a cylindrical sleeve, girdledby said wire, onto a cylindrical car- 'rier surface fitting in said sleeve, the side portions of said band, onboth sides of the wire, bounding inflatable and deformable chambers or envelopes, said envelopes being then inflated and deformed by driving them back towards each other, in such a manner that these, in turn, cause the "sleeve to be deformed and the corresponding portions thereof to be folded towards each other, around said wire.
  • FIG. 1 is an axial view, in cross-section, of a wire around which aband orstrip of fabric has been folded
  • FIG. 2 is a diagrammatic view in elevation and in longitudinal half-section, of an apparatus according to the invention.
  • FIG. 3 is a cross-sectional view along the line IIIIII of FIG. 2.
  • FIGS. 4 and 5 are diagrammatic fragmentary views illustrating the method of operation of the apparatus of the invention.
  • a base or stand 1 comprising a bearing having journalled therein one of the ends of a shaft 3, on the other end of which is secured a hub 4 of a cylindrical drum 5.
  • staves or bars 16 of a partially cylindrical shape and of a width such that they may be brought nearest to drum 5 when the bags are in a deflated state.
  • the ends of the staves 16 are engaged in annular retaining elements consisting of U-section end-shields 17, secured at the ends of drum 5 so as to limit the motion of said staves towards the outside.
  • the staves 16 are surrounded, at their central portion, by a ring or annulus 18 of rubber or other similar material, of a diameter such that it will remain tight when the bags 6 are deflated and the staves near drum 5.
  • ring-shaped, inflatable and deformable chambers exemplified by envelopes 19 and 20, of rubber for instance, having a head or flange 19-a or 20-a adjacent ring 18 and a side portion 19-b or 20-11, respectively, extending up to and adjoining said end-shields 17.
  • the staves 16 are provided, beneath portions 19-12 and 20-h, with raised sections 16-a, so that the outer surfaces of ring 18 and of envelopes 19 and 20 are substantially in continuation to each other, providing a cylindrically-shaped bearing surface when said envelopes are not in an inflated state.
  • Each chamber or envelope comprises a duct 19-0 and 20-c, respectively, traversing one of said staves 16, as well as the drum wall wherein it is slidably mounted, said ducts being respectively connected, by means of hose pipes 21 and 22, respectively, to openings 23 or 24 formed in said hub 4 and communicating with ducts 25 and 26, respectively, provided in shaft 3.
  • Duct 25 leads to a groove 27 in bearing 2 and communicating, through a duct 28, with a compressed-air distributor 29.
  • duct 26 leads into a groove 30 to which is connected a pipe 31 fed by a distributor 32
  • Gaskets 15 provide a tight joint between grooves 27 and 30, respectively, and shaft 3.
  • Slidably mounted on shaft 3 is a hub 33 of a bell structure 34 the cylindrically-shaped skirt 35 of which has an inner diameter which is slightly superior to that of the cylindrical bearing surface comprised of the deflated envelopes 19 and 20 and ring 18. Skirt'35 terminates in a circular flange or collar 36.
  • the bell structure 34 is shiftai by means of a doubleacting fluid pressure actuated jack 37 resting on base 1 and operated from a distributor 38.
  • a shaft 39 Coaxially with shaft 3, and spaced apart a certain distance from drum 5, is a shaft 39 supported by base 40.
  • On said second shaft is slidably mounted the hub 41 of a further bell structure 42, similar to hell 34, and having its skirt terminated in a flange 44.
  • the shifting of said bell structure 42 is effected by means of a double-acting fluid pressure actuated jack operated from a distributor
  • the apparatus described hereinabove is adapted to produce ring-shaped elements such as illustrated in FIG.
  • This ring-shaped element has the general shape of a truncated cone the mean angle at the apex of which may vary in accordance, in particular, with the type of outer case or cover for which said ring is to be used.
  • the slopes of said flanges 36 and 44 of the bell structures 34 and 42, respectively, are determined as a function of the apex angle which the ring-shaped elements to be manufactured must present.
  • the band or strip 48 in the shape of a ring-shaped sleeve, is placed on the cylindrical bearing surface formed by ring 18 and the envelopes 19 and 20 in a deflated state, the staves or bars 16 being driven outwardly by means of the bags 6 inflated by distributor 14. Portion P rests on envelope 19 and portions P on envelope 20, these two envelopes being only partially covered up by said sleeve (FIG. 2).
  • the bell structure being shifted to the left so as to clear the corresponding side of the drum, the wire 47- carrying, if necessary, said ring 49is placed around sleeve 48 in such a manner that the wire is set in perpendicular relationship to ring 18.
  • the position of the bell structures 42 and 34 is then adjusted in such a manner that the end of the skirt thereof covers up the end of the corresponding inflatable envelope, as shown in FIG. 2.
  • the distributors 29 and 32 are then actuated to inflate the envelopes 19 and 20, those portions of said envelopes which are not subjected to the action of the bell structures forming rolls or folds 50 and 51 which raise the portions P and P of the sleeve 48 and initiate the folding action of the sleeve around wire 47 (FIG. 4).
  • the screw-jacks 37 and 45 cause the bell structures 34 and 42 to be shifted and the flanges thereof to drive back the folds or rolls 50 and 51 of said envelopes, folding portions P and P towards one another and applying them to the sides of ring 49, as shown in FIG. 5.
  • T remove said element, the bell structures are pushed back, the envelopes 19 and 20 deflated and the ringshaped element is cleared off the drum.
  • the inflating pressures of envelopes 19 and 20 may differ and that the inflating medium may be introduced into said chambers at different times and in different amounts.
  • the movements of the flanges 36 and 44 are independent from one another and may take place according to different laws for each one thereof.
  • the apparatus will thus operate with extreme smoothness and flexibility.
  • An apparatus for folding bands of fabric or the like material around bead wires for outer covers of pneumatic tires comprising in combination: a cylindrical drum, a pair of inflatable and deformable chambers fitted side by side on the outer periphery of said drum; bell structures, each coaxial to and axially slidable relative to said drum, respectively located on each side of said drum, said bell structures each having an inner diameter slightly greater than the outer diameter of said chambers when not inflated, and being further provided at their edges directed towards said drum with frustoconical flanges coaxial to said drum and the apex angles of which are substantially supplemental, whereby a band of fabric formed as a cylindrical sleeve, placed onto said chambers and girded by a bead wire may be folded around said bead wire by inflating said chambers and deforming the said chambers by shifting said bell structures towards each other and towards said drum.
  • An apparatus as claimed in claim 1 including an annulus encircling and secured against axial movement on said drum, said annulus having a radially outer face providing a seat for said fabric and said bead wire, said annulus projecting radially outwardly from the drum between said chambers and being in axial abutment with the respective chambers.
  • An apparatus for folding bands of fabric or the like material around bead wires for outer covers of pneumatic tires comprising in combination: a frame, said shaft being horizontally mounted on said frame, said shaft being provided with longitudinal ducts, means for connecting one end of said duets with sources of fluid under pressure; a drum mounted on said shaft, a pair of inflatable and deformable chambers fitted side by side around the outer periphery of said drum, means for respectively connecting said chambers with the other ends of said ducts; a second shaft mounted on said frame coaxially to and at a distance of said first shaft and said drum; a pair of hell structures each slidably mounted on said shafts on opposite axial sides of said drum, said bell structures having inner diameters slightly greater than the outer diameters of said chambers when not inflated and being further provided, at their edges directed towards said drum with frustoconical flanges coaxial to said drum and both diverging in the same axial direction from their respective shafts; and means connected between said frame and said bell structures for axially shifting both
  • said drum comprises a cylindrical surface, an inner set of inflatable bags fitted around said cylindrical surface, a pair of annular retaining elements located on both ends of said surface, longitudinal members disposed on said bags and engaged with said annular elements, said longitudinal members constituting said outer periphery of said drum, and an annulus of noninfiatable but resilient material fitted around said outer periphery between and in axial abutment with said inflatable and deformable bags.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Packages (AREA)
US201908A 1961-06-15 1962-06-12 Method and apparatus for fitting bands of fabric or other material around wires for outer covers of pneumatic tires Expired - Lifetime US3185607A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR865060A FR1311161A (fr) 1961-06-15 1961-06-15 Procédé et appareil pour poser des bandes de tissus ou matières analogues autour de tringles pour enveloppes de bandages pneumatiques

Publications (1)

Publication Number Publication Date
US3185607A true US3185607A (en) 1965-05-25

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US201908A Expired - Lifetime US3185607A (en) 1961-06-15 1962-06-12 Method and apparatus for fitting bands of fabric or other material around wires for outer covers of pneumatic tires

Country Status (5)

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US (1) US3185607A (de)
DE (1) DE1223533B (de)
ES (1) ES278311A1 (de)
FR (1) FR1311161A (de)
GB (1) GB971814A (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3281305A (en) * 1961-12-15 1966-10-25 Continental Gummi Werke Ag Tire building drum variable in diameter
US3375151A (en) * 1962-12-04 1968-03-26 Us Rubber Co Bead-setting method used in tire carcass building process
US3433695A (en) * 1964-07-24 1969-03-18 Pirelli Apparatus for manufacturing pneumatic tires
US4087298A (en) * 1976-07-01 1978-05-02 The Goodyear Tire & Rubber Company Tire bead core-apex assembly
US4163683A (en) * 1977-12-27 1979-08-07 The Goodyear Tire & Rubber Company Forming a tire bead assembly
US4168336A (en) * 1978-01-16 1979-09-18 The Goodyear Tire & Rubber Company Wedge for tire bead assembly apparatus
US4450025A (en) * 1983-01-31 1984-05-22 The General Tire & Rubber Company Method and apparatus for wrapping a tire bead ring
US5108538A (en) * 1987-10-16 1992-04-28 Sumitomo Rubber Industries, Ltd. Method and apparatus for applying bead filler
US5282912A (en) * 1987-10-16 1994-02-01 Sumitomo Rubber Industries, Ltd. Method for applying bead flipper
US5350470A (en) * 1993-11-30 1994-09-27 Bridgestone Corporation Method of forming tire bead assembly
US5651849A (en) * 1993-10-11 1997-07-29 Pirelli Coordinamento Pneumatici S.P.A. Method for looping a coating structure around a bead core in motor-vehicle tires
US6461460B2 (en) * 1998-10-16 2002-10-08 Michelin Recherche Et Technique S.A. Process for the manufacture of a tire without bead wire
US20120024464A1 (en) * 2009-04-08 2012-02-02 Pirelli Tyre S.P.A Process for manufacturing tyres for vehicle wheels
US20170291378A1 (en) * 2014-10-03 2017-10-12 Fuji Seiko Co., Ltd. Filler-raising device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1077000B (it) * 1977-04-13 1985-04-27 Pirelli Procedimento per applicare un elemento di materiale deformabile ad un cerchietto per tallone di pneumatico e macchina per realizzare tale procedimento

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1899088A (en) * 1925-06-27 1933-02-28 Goodrich Co B F Bead for pneumatic tire casings and method of making the same
US2614952A (en) * 1950-11-02 1952-10-21 Gen Tire & Rubber Co Tire building machine
US2653645A (en) * 1933-10-14 1953-09-29 Nat Standard Co Tire building machine
CA592044A (en) * 1960-02-02 Pirelli Societa Per Azioni Process and apparatus for wrapping bead wires for tire covers with fabric ply loops
US2943668A (en) * 1956-11-17 1960-07-05 Dunlop Rubber Co Tire building apparatus
US3011540A (en) * 1957-05-14 1961-12-05 Pirelli Apparatus for producing fabric flippers for tire casings
US3053308A (en) * 1957-04-11 1962-09-11 Pirelli Tire building apparatus and method
US3078204A (en) * 1959-08-25 1963-02-19 Goodyear Tire & Rubber Method of and apparatus for building tires

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE567670A (de) * 1957-05-14
GB907694A (en) * 1958-01-29 1962-10-10 Dunlop Rubber Co Improvements in or relating to tyre building
FR1243173A (fr) * 1958-12-16 1960-10-07 Dunlop Sa Procédé et appareil pour le montage et la pose des bandelettes de talon des bandages pneumatiques

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA592044A (en) * 1960-02-02 Pirelli Societa Per Azioni Process and apparatus for wrapping bead wires for tire covers with fabric ply loops
US1899088A (en) * 1925-06-27 1933-02-28 Goodrich Co B F Bead for pneumatic tire casings and method of making the same
US2653645A (en) * 1933-10-14 1953-09-29 Nat Standard Co Tire building machine
US2614952A (en) * 1950-11-02 1952-10-21 Gen Tire & Rubber Co Tire building machine
US2943668A (en) * 1956-11-17 1960-07-05 Dunlop Rubber Co Tire building apparatus
US3053308A (en) * 1957-04-11 1962-09-11 Pirelli Tire building apparatus and method
US3011540A (en) * 1957-05-14 1961-12-05 Pirelli Apparatus for producing fabric flippers for tire casings
US3078204A (en) * 1959-08-25 1963-02-19 Goodyear Tire & Rubber Method of and apparatus for building tires

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3281305A (en) * 1961-12-15 1966-10-25 Continental Gummi Werke Ag Tire building drum variable in diameter
US3375151A (en) * 1962-12-04 1968-03-26 Us Rubber Co Bead-setting method used in tire carcass building process
US3433695A (en) * 1964-07-24 1969-03-18 Pirelli Apparatus for manufacturing pneumatic tires
US3434897A (en) * 1964-07-24 1969-03-25 Pirelli Method for manufacturing pneumatic tires
US4087298A (en) * 1976-07-01 1978-05-02 The Goodyear Tire & Rubber Company Tire bead core-apex assembly
US4163683A (en) * 1977-12-27 1979-08-07 The Goodyear Tire & Rubber Company Forming a tire bead assembly
US4168336A (en) * 1978-01-16 1979-09-18 The Goodyear Tire & Rubber Company Wedge for tire bead assembly apparatus
US4450025A (en) * 1983-01-31 1984-05-22 The General Tire & Rubber Company Method and apparatus for wrapping a tire bead ring
US5108538A (en) * 1987-10-16 1992-04-28 Sumitomo Rubber Industries, Ltd. Method and apparatus for applying bead filler
US5282912A (en) * 1987-10-16 1994-02-01 Sumitomo Rubber Industries, Ltd. Method for applying bead flipper
US5804028A (en) * 1993-10-11 1998-09-08 Pirelli Coordinamento Pneumatici S.P.A. Apparatus for looping a coating structure around a bead core in motor-vehicle tires
US6117269A (en) * 1993-10-11 2000-09-12 Pirelli Coordinamento Pneumatici Spa Apparatus for looping a coating structure around a bead core in motor-vehicle tires
US5651849A (en) * 1993-10-11 1997-07-29 Pirelli Coordinamento Pneumatici S.P.A. Method for looping a coating structure around a bead core in motor-vehicle tires
US5350470A (en) * 1993-11-30 1994-09-27 Bridgestone Corporation Method of forming tire bead assembly
EP0655322A1 (de) * 1993-11-30 1995-05-31 Bridgestone Corporation Verfahren zur Herstellung eines Reifenwulstaufbaus
US6461460B2 (en) * 1998-10-16 2002-10-08 Michelin Recherche Et Technique S.A. Process for the manufacture of a tire without bead wire
US20120024464A1 (en) * 2009-04-08 2012-02-02 Pirelli Tyre S.P.A Process for manufacturing tyres for vehicle wheels
US9744733B2 (en) * 2009-04-08 2017-08-29 Pirelli Tyre S.P.A. Process for manufacturing tyres for vehicle wheels
US20170291378A1 (en) * 2014-10-03 2017-10-12 Fuji Seiko Co., Ltd. Filler-raising device
US10442148B2 (en) * 2014-10-03 2019-10-15 Fuji Seiko Co., Ltd. Filler-raising device

Also Published As

Publication number Publication date
ES278311A1 (es) 1962-10-16
FR1311161A (fr) 1962-12-07
DE1223533B (de) 1966-08-25
GB971814A (en) 1964-10-07

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