WO1999004960A1 - Improvements in tyre manufacture - Google Patents

Improvements in tyre manufacture Download PDF

Info

Publication number
WO1999004960A1
WO1999004960A1 PCT/GB1998/002193 GB9802193W WO9904960A1 WO 1999004960 A1 WO1999004960 A1 WO 1999004960A1 GB 9802193 W GB9802193 W GB 9802193W WO 9904960 A1 WO9904960 A1 WO 9904960A1
Authority
WO
WIPO (PCT)
Prior art keywords
ribbon
delivery
turntable
festoon
operative
Prior art date
Application number
PCT/GB1998/002193
Other languages
French (fr)
Inventor
Eric Holroyd
Colin Holroyd
Original Assignee
Holroyd Associates Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Holroyd Associates Limited filed Critical Holroyd Associates Limited
Priority to AU84544/98A priority Critical patent/AU8454498A/en
Publication of WO1999004960A1 publication Critical patent/WO1999004960A1/en

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
    • B29D30/10—Building tyres on round cores, i.e. the shape of the core is approximately identical with the shape of the completed tyre
    • B29D30/16—Applying the layers; Guiding or stretching the layers during application
    • B29D30/1628—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 core axis, to form an annular element
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • 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
    • 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
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • 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
    • B29D30/10—Building tyres on round cores, i.e. the shape of the core is approximately identical with the shape of the completed tyre
    • B29D30/16—Applying the layers; Guiding or stretching the layers during application
    • B29D2030/1664—Details, accessories or auxiliary operations not provided for in the other subgroups of B29D30/00
    • B29D2030/1678—Details, accessories or auxiliary operations not provided for in the other subgroups of B29D30/00 the layers being applied being substantially continuous, i.e. not being cut before the application step
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00—Pneumatic or solid tyres or parts thereof
    • B29L2030/002—Treads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00—Pneumatic or solid tyres or parts thereof
    • B29L2030/007—Sidewalls

Definitions

  • This invention is concerned with improvements in tyre manufacture, and particularly with improvements in the formation of sidewalls.
  • a pneumatic tyre is formed in several pieces which in use are distorted appreciably, and so it is desirable that the sides of a tyre are covered by a sidewall so that the appearance of the tyre is improved.
  • sidewalls for pneumatic tyres have been formed by moulding. That is a technique preferable to an extrusion process, which would tend to lead to creases being formed in the inside radius region of the sidewall. That improvement is known from U.S. Patent 4,743,322.
  • a slug of uncured elastomeric material is poured onto a female mould plate rotatable on a turntable.
  • a male plate is then placed over the female plate and the slug is pressed out to the desired sidewall shape.
  • the moulded sidewall is then applied to a tyre carcass and cured.
  • moulding flashes will be formed at both the exterior and interior edges of the sidewall. Those moulding flashes will need to be removed before the curing step. Although the flashes can be recycled, their existence reduces the efficiency of the process.
  • the step of removing the flashes is also time consuming and increases the overall production time for a sidewall or other tyre component produced by the above method.
  • apparatus for manufacturing a tyre component comprising continuous ribbon extrusion means for producing a substantially continuous supply of ribbon of elastomeric material, ribbon delivery means for receiving ribbon from said extrusion means, and a turntable onto which the delivery means is operative to deliver ribbon.
  • the apparatus comprises loop storage means for storing a loop of ribbon produced by the extrusion means prior to delivery by the delivery means.
  • the loop storage means may comprise a festoon.
  • the festoon preferably includes sensor means operative to sense the length of ribbon stored therein.
  • the sensor means may comprise upper and lower ribbon presence detectors for defining upper and lower limits for the length of ribbon stored in the festoon.
  • the sensor means is preferably operative to control the rate of production of ribbon by the extrusion means; the rate of production may be controlled by proportional control.
  • the delivery means is capable of delivering ribbon of variable thickness.
  • the delivery means may comprise a delivery head including a calender.
  • the turntable may be rotatable relative the deliver ⁇ ' means.
  • Figure 1 is a side elevation of a strip winding station according to a specific embodiment of the invention.
  • Figure 2 is a side elevation of a turntable of the strip winding station of figure 1 with a strip laying head assembly
  • Figure 3 is- an enlarged view of a mini-calender of the strip laying head assembly, viewed from the right in figure 2.
  • a strip winding station 10 comprises an extruder 12 which is operative to produce a bootlace of elastomeric material such as is normally found in the tread package or sidewall of a car tyre.
  • a festoon 14 Arranged adjacent the extruder is a festoon 14 which comprises intake and output rollers 16, 18 and in which a loop of the bootlace can be formed.
  • the system further comprises a turntable 20 which is generally horizontal and is mounted on a plinth 22.
  • the turntable 20 is rotatable relative to the plinth 22 about a vertical axis.
  • a drive motor 24 is mounted on the plinth 22 and which, via gearing or a belt, is operative to turn the turntable.
  • the plinth is also provided with means to allow the turntable 20 to be raised or lowered as required.
  • the turntable 20 has a profile corresponding to the profile of a half of a tread package, the half being such as would be fonned by cutting a complete tread package in a plane perpendicular to the axis of rotation of the tread package.
  • a laying head assembly 26 which comprises a mini-calender 28 and a laying head 30.
  • the minicalender 28 comprises three rolls 32, 34, 36 which are arranged in parallel to receive a supply of bootlace from the output roller 18 of the festoon 14, and to shape the bootlace into a strip suitable to be laid on the turntable.
  • the intermediate of the three rolls has side flanges between which the other rolls engage so as to define with the other rollers a calender nip limited in all planes. In that way, the profile of the strip can be controlled carefully.
  • the rolls 32, 34, 36 are movable relative each other in order that the thickness of the strip may be varied.
  • a driven endless conveyor 38 Situated between the mini-calender 28 and the laying head 30 is a driven endless conveyor 38.
  • the conveyor 38 supports strip as it is transferred from the mini-calender 28 to the laying head 30, and by driving the conveyor at a faster rate than the strip is delivered to the conveyor, a controlled strain may be imparted to the strip.
  • a roll 40 of the laying head is directed onto the conveyor, and assists in this imparting of the controlled strain.
  • the laying head 30 comprises a series of rolls 42 which are arranged to deliver the strip from the conveyor to the turntable in a controlled manner.
  • the height of the rolls 42 is adjustable, and so the laying head can be allowed to follow the profile of the turntable.
  • a layer built up in such a way can be made to be any desired shape, and can have thickness varying with radius. Other criteria may also be taken into account, such as by changing the characteristics of the elastomeric material during the winding step so as to produce a complex final product.
  • the strip is driven through the laying head by means of the rolls 32, 34, 36, 40 and 42 of the mini-calender and of the strip laying head.
  • the speed of delivery of the strip to the turntable is independent of the speed at which bootlace can be extruded.
  • the extruder 12 can be arranged to operate at a generally constant speed and need not be accelerated or decelerated in order to take account of stoppages, for instance that occurring when one tyre component is completed and the former for another is being introduced to the system.
  • the festoon 14 may include sensors 44, 46 positioned to correspond to predetermined minimum and maximum levels of the lower extent of the loop of bootlace stored in the festoon. If an appropriate signal is produced by the lower sensor 44, that indicates that the festoon is nearly full, and so the extmder decelerates to account for that. If an appropriate signal is produced by the upper sensor 46, that indicates that the festoon is nearly empty, and so the extruder accelerates to account for that.
  • the extruder may be spared from undue acceleration and deceleration which would otherwise lead to inefficiencies in the system.
  • the turntable may be of a lightweight construction. Hence, whereas previous arrangements required bulky moulding dies to be moved around a plant, the system described above is more efficient.

Abstract

Apparatus for manufacturing a tyre component comprises continuous ribbon extrusion means (12) for producing a substantially continuous supply of ribbon of elastomeric material, ribbon delivery means (26) for receiving ribbon from the extrusion means, and a turntable onto which the delivery means (26) is operative to deliver ribbon.

Description

Title: Improvements in Tyre Manufacture
This invention is concerned with improvements in tyre manufacture, and particularly with improvements in the formation of sidewalls.
A pneumatic tyre is formed in several pieces which in use are distorted appreciably, and so it is desirable that the sides of a tyre are covered by a sidewall so that the appearance of the tyre is improved. In the past, sidewalls for pneumatic tyres have been formed by moulding. That is a technique preferable to an extrusion process, which would tend to lead to creases being formed in the inside radius region of the sidewall. That improvement is known from U.S. Patent 4,743,322.
As shown in figure 2 of that patent, a slug of uncured elastomeric material is poured onto a female mould plate rotatable on a turntable. A male plate is then placed over the female plate and the slug is pressed out to the desired sidewall shape. The moulded sidewall is then applied to a tyre carcass and cured.
In order to ensure correct moulding of the sidewall, an excess quantity of material is delivered onto the female plate. Thus, moulding flashes will be formed at both the exterior and interior edges of the sidewall. Those moulding flashes will need to be removed before the curing step. Although the flashes can be recycled, their existence reduces the efficiency of the process.
The step of removing the flashes is also time consuming and increases the overall production time for a sidewall or other tyre component produced by the above method.
Furthermore, the apparatus shown in the above referenced patent is only useful for the production of one size of sidewall. If a different interior or exterior tyre radius or sidewall thickness is to be produced, a completely different set of moulding tools is required to be used. US Patent 4155789 describes a method of producing a ribbon of elastomeric material and applying the same to an electronically controlled tyre former. However, it is apparent that the device described therein is inflexible in terms of speed control since it is dependent on the speed and the variability of the speed of extension.
It is an object of the invention to provide apparatus which ameliorates the above problems.
According to the invention, there is provided apparatus for manufacturing a tyre component, the apparatus comprising continuous ribbon extrusion means for producing a substantially continuous supply of ribbon of elastomeric material, ribbon delivery means for receiving ribbon from said extrusion means, and a turntable onto which the delivery means is operative to deliver ribbon.
In a preferred embodiment of the invention, the apparatus comprises loop storage means for storing a loop of ribbon produced by the extrusion means prior to delivery by the delivery means.
The loop storage means may comprise a festoon. The festoon preferably includes sensor means operative to sense the length of ribbon stored therein. The sensor means may comprise upper and lower ribbon presence detectors for defining upper and lower limits for the length of ribbon stored in the festoon.
The sensor means is preferably operative to control the rate of production of ribbon by the extrusion means; the rate of production may be controlled by proportional control.
In a preferred embodiment of the invention, the delivery means is capable of delivering ribbon of variable thickness. The delivery means may comprise a delivery head including a calender.
The turntable may be rotatable relative the deliver}' means. Further aspects and advantages of the invention will be apparent from the following description of a specific embodiment of apparatus in accordance with the invention with reference to the accompanying drawings, in which:
Figure 1 is a side elevation of a strip winding station according to a specific embodiment of the invention;
Figure 2 is a side elevation of a turntable of the strip winding station of figure 1 with a strip laying head assembly; and
Figure 3 is- an enlarged view of a mini-calender of the strip laying head assembly, viewed from the right in figure 2.
A strip winding station 10 comprises an extruder 12 which is operative to produce a bootlace of elastomeric material such as is normally found in the tread package or sidewall of a car tyre.
Arranged adjacent the extruder is a festoon 14 which comprises intake and output rollers 16, 18 and in which a loop of the bootlace can be formed.
The system further comprises a turntable 20 which is generally horizontal and is mounted on a plinth 22. The turntable 20 is rotatable relative to the plinth 22 about a vertical axis. A drive motor 24 is mounted on the plinth 22 and which, via gearing or a belt, is operative to turn the turntable. The plinth is also provided with means to allow the turntable 20 to be raised or lowered as required.
The turntable 20 has a profile corresponding to the profile of a half of a tread package, the half being such as would be fonned by cutting a complete tread package in a plane perpendicular to the axis of rotation of the tread package.
Located above the turntable is a laying head assembly 26 which comprises a mini-calender 28 and a laying head 30. The minicalender 28 comprises three rolls 32, 34, 36 which are arranged in parallel to receive a supply of bootlace from the output roller 18 of the festoon 14, and to shape the bootlace into a strip suitable to be laid on the turntable.
The three rolls are best illustrated in figure 3 of the drawings.
The intermediate of the three rolls has side flanges between which the other rolls engage so as to define with the other rollers a calender nip limited in all planes. In that way, the profile of the strip can be controlled carefully.
The rolls 32, 34, 36 are movable relative each other in order that the thickness of the strip may be varied.
Situated between the mini-calender 28 and the laying head 30 is a driven endless conveyor 38. In use, the conveyor 38 supports strip as it is transferred from the mini-calender 28 to the laying head 30, and by driving the conveyor at a faster rate than the strip is delivered to the conveyor, a controlled strain may be imparted to the strip. A roll 40 of the laying head is directed onto the conveyor, and assists in this imparting of the controlled strain.
The laying head 30 comprises a series of rolls 42 which are arranged to deliver the strip from the conveyor to the turntable in a controlled manner. The height of the rolls 42 is adjustable, and so the laying head can be allowed to follow the profile of the turntable. By rotating the turntable and by simultaneously moving the laying head in a radial direction relative thereto, a layer of elastomeric material may be built up on the turntable.
A layer built up in such a way can be made to be any desired shape, and can have thickness varying with radius. Other criteria may also be taken into account, such as by changing the characteristics of the elastomeric material during the winding step so as to produce a complex final product.
The strip is driven through the laying head by means of the rolls 32, 34, 36, 40 and 42 of the mini-calender and of the strip laying head. Thus, the speed of delivery of the strip to the turntable is independent of the speed at which bootlace can be extruded.
By use of the festoon 14, the extruder 12 can be arranged to operate at a generally constant speed and need not be accelerated or decelerated in order to take account of stoppages, for instance that occurring when one tyre component is completed and the former for another is being introduced to the system.
The festoon 14 may include sensors 44, 46 positioned to correspond to predetermined minimum and maximum levels of the lower extent of the loop of bootlace stored in the festoon. If an appropriate signal is produced by the lower sensor 44, that indicates that the festoon is nearly full, and so the extmder decelerates to account for that. If an appropriate signal is produced by the upper sensor 46, that indicates that the festoon is nearly empty, and so the extruder accelerates to account for that.
In that way, the extruder may be spared from undue acceleration and deceleration which would otherwise lead to inefficiencies in the system.
Since the system forms a component without recourse to moulding, the turntable may be of a lightweight construction. Hence, whereas previous arrangements required bulky moulding dies to be moved around a plant, the system described above is more efficient.

Claims

Claims
1. Apparatus for manufacturing a tyre component, the apparatus comprising continuous ribbon extrusion means (12) for producing a substantially continuous supply of ribbon of elastomeric material, ribbon delivery means (26) for receiving ribbon from said extrusion means, and a turntable onto which the delivery means (26) is operative to deliver ribbon.
2. Apparatus according to claim 1 and further comprising loop storage means (14) for storing a loop of ribbon produced by the extrusion means prior to delivery by the delivery means (26).
3. Apparatus according to claim 2 wherein the loop storage (197) means comprises a festoon (14).
4. Apparatus according to claim 3 wherein the festoon (14) includes sensor means (44, 46) operative to sense the length of ribbon stored therein.
5. Apparatus according to claim 4 wherein the sensor means comprises upper and lower ribbon presence detectors (44, 46) for defining upper and lower limits for the length of ribbon stored in the festoon.
6. Apparatus according to claim 4 or claim 5 wherein the sensor means (44, 46) is operative to control the rate of production of ribbon by the extmsion means (12).
7. Apparatus according to claim 6 wherein the rate of production is controlled by proportional control.
8. Apparatus according to any preceding claim wherein the delivery means (26) is capable of delivering ribbon of variable thickness.
9. Apparatus according to any preceding claim wherein the delivery means comprises a delivery head (42) including a calender.
10. Apparatus according to any preceding claim wherein the turntable is rotatable relative the delivery means (26).
PCT/GB1998/002193 1997-07-23 1998-07-22 Improvements in tyre manufacture WO1999004960A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU84544/98A AU8454498A (en) 1997-07-23 1998-07-22 Improvements in tyre manufacture

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9715453.8 1997-07-23
GB9715453A GB2327393A (en) 1997-07-23 1997-07-23 Tyre component manufacture

Publications (1)

Publication Number Publication Date
WO1999004960A1 true WO1999004960A1 (en) 1999-02-04

Family

ID=10816274

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1998/002193 WO1999004960A1 (en) 1997-07-23 1998-07-22 Improvements in tyre manufacture

Country Status (3)

Country Link
AU (1) AU8454498A (en)
GB (1) GB2327393A (en)
WO (1) WO1999004960A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007045684A1 (en) * 2005-10-21 2007-04-26 Marangoni Meccanica S.P.A. Method and system for feeding a continuous rod of elastomeric material automatically to a user unit
JP2019081288A (en) * 2017-10-30 2019-05-30 住友ゴム工業株式会社 Method of manufacturing tire rubber member

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2924702B1 (en) * 2007-12-07 2010-05-07 Michelin Soc Tech DEVICE FOR REGULATING A FLOW RATE OF A LINEAR ELEMENT.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421130A1 (en) * 1978-04-01 1979-10-26 Henkel Kgaa Winding extruded sealing tape - extrusion on carrier is festooned and conveyed at speed regulated by festoon depth (NL 3.10.79)
EP0288609A1 (en) * 1987-04-21 1988-11-02 Bridgestone Corporation Tire reinforcing member winding apparatus
EP0340147A2 (en) * 1988-04-23 1989-11-02 The Goodyear Tire & Rubber Company Apparatus for the manufacture of a pneumatic tire
JPH0416333A (en) * 1990-05-09 1992-01-21 Bridgestone Corp Rewinding method of wound belt-like member

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2902083A (en) * 1955-03-03 1959-09-01 Nat Standard Co Method of manufacturing tire beads
GB919078A (en) * 1959-12-07 1963-02-20 Bridgestone Tire Co Ltd Method and apparatus for manufacturing pneumatic tyres
FR2301379A1 (en) * 1975-02-21 1976-09-17 Amf Inc METHOD AND APPARATUS FOR PRODUCING AN EXTRUDED ELASTOMERIC MATERIAL
GB8627503D0 (en) * 1986-11-18 1986-12-17 Apsley Metals Ltd Laying continuous strip of elastomeric material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421130A1 (en) * 1978-04-01 1979-10-26 Henkel Kgaa Winding extruded sealing tape - extrusion on carrier is festooned and conveyed at speed regulated by festoon depth (NL 3.10.79)
EP0288609A1 (en) * 1987-04-21 1988-11-02 Bridgestone Corporation Tire reinforcing member winding apparatus
EP0340147A2 (en) * 1988-04-23 1989-11-02 The Goodyear Tire & Rubber Company Apparatus for the manufacture of a pneumatic tire
JPH0416333A (en) * 1990-05-09 1992-01-21 Bridgestone Corp Rewinding method of wound belt-like member

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016, no. 173 (M - 1240) 24 April 1992 (1992-04-24) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007045684A1 (en) * 2005-10-21 2007-04-26 Marangoni Meccanica S.P.A. Method and system for feeding a continuous rod of elastomeric material automatically to a user unit
US8246879B2 (en) 2005-10-21 2012-08-21 Marangoni Meccanica S.P.A. Method and system for feeding a continuous rod of elastomeric material automatically to a user unit
JP2019081288A (en) * 2017-10-30 2019-05-30 住友ゴム工業株式会社 Method of manufacturing tire rubber member

Also Published As

Publication number Publication date
GB9715453D0 (en) 1997-09-24
AU8454498A (en) 1999-02-16
GB2327393A (en) 1999-01-27

Similar Documents

Publication Publication Date Title
US6719551B2 (en) Thermoplastic molding process and apparatus
KR100696901B1 (en) Tire forming system and forming method
EP1279486B1 (en) Production of shaped rubber body
EP2049324B1 (en) Process and apparatus for building pneumatic tyres
EP0340147B1 (en) Apparatus for the manufacture of a pneumatic tire
EP2978595B1 (en) Process and apparatus for obtaining tyres for vehicle wheels
EP1509386B1 (en) A method and apparatus for manufacturing elastomeric material components of a tyre for vehicle wheels
JPH11291363A (en) Tire molding machine and method for molding tire using the same
EP1419877B1 (en) Supply method of belt member
EP0062497A1 (en) Fillered bead core assembly machine and method of manufacturing a fillered bead core assembly
JPS6149814A (en) Method and device for continuously manufacturing body or coated material having complicatedly molded contour shape
US3479694A (en) Continuous method and apparatus for manufacturing articles from foamed thermoplastic material
US20040018263A1 (en) Apparatus useful for continuous forming of thermoplastic material and method for use thereof
US5234647A (en) Method of manufacturing rubber sheet with rugged patterns formed on its one side surface portion
WO1999004960A1 (en) Improvements in tyre manufacture
KR101658611B1 (en) Belt width control apparatus
US3779834A (en) Tire building machine
EP1291161B1 (en) Method and manufacturing system for manufacturing a lugged track for vehicles
US4198367A (en) Method and apparatus for producing retreading envelopes
EP3397472B1 (en) Tire with pre-formed ribbon tread and method of making same
US3746597A (en) Tire building machine and method
US3594868A (en) Forming unit for use with apparatus for forming and cutting three-dimensional plastic articles
US4565514A (en) Apparatus for shaping in a calibrated way a rubber pre-extruded profiled member for regenerating tires and the like
SU663603A1 (en) Method of moulding a blank for radial-ply pneumatic tyre
KR100441958B1 (en) Building Assemble Apparatus of Green Tire for Off The Road Vehicles

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM HR HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: JP

Ref document number: 1999509515

Format of ref document f/p: F

NENP Non-entry into the national phase

Ref country code: CA

122 Ep: pct application non-entry in european phase