GB1590378A - Apparatus for applying tread material to tyres - Google Patents

Apparatus for applying tread material to tyres Download PDF

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Publication number
GB1590378A
GB1590378A GB31097/76A GB3109776A GB1590378A GB 1590378 A GB1590378 A GB 1590378A GB 31097/76 A GB31097/76 A GB 31097/76A GB 3109776 A GB3109776 A GB 3109776A GB 1590378 A GB1590378 A GB 1590378A
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GB
United Kingdom
Prior art keywords
carcass
undertread
tyre
tread material
die means
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB31097/76A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Barwell Machine and Rubber Group Ltd
Original Assignee
Barwell Machine and Rubber Group Ltd
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 Barwell Machine and Rubber Group Ltd filed Critical Barwell Machine and Rubber Group Ltd
Priority to GB31097/76A priority Critical patent/GB1590378A/en
Priority to CA282,920A priority patent/CA1100724A/en
Priority to AU27135/77A priority patent/AU514823B2/en
Priority to ZA00774323A priority patent/ZA774323B/en
Priority to NZ184686A priority patent/NZ184686A/en
Priority to ZM57/77A priority patent/ZM5777A1/en
Priority to PT66827A priority patent/PT66827B/en
Priority to BG7736984A priority patent/BG29276A3/en
Priority to MX169970A priority patent/MX144364A/en
Priority to TR19803A priority patent/TR19803A/en
Priority to BR7704879A priority patent/BR7704879A/en
Priority to DE19772733518 priority patent/DE2733518A1/en
Priority to FI772275A priority patent/FI772275A/fi
Priority to SU772512602A priority patent/SU665787A3/en
Priority to JP8913177A priority patent/JPS5314780A/en
Priority to FR7722974A priority patent/FR2359700A1/en
Priority to ES461025A priority patent/ES461025A1/en
Priority to GR54034A priority patent/GR71899B/el
Publication of GB1590378A publication Critical patent/GB1590378A/en
Expired legal-status Critical Current

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)
    • B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
    • B29D30/58—Applying bands of rubber treads, i.e. applying camel backs
    • B29D30/62—Applying bands of rubber treads, i.e. applying camel backs by extrusion or injection of the tread on carcass
    • 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
    • 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
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/35—Extrusion nozzles or dies with rollers
    • 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
    • B29C48/131—Curved articles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Tyre Moulding (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Description

(54) IMPROVEMENTS IN OR RELATING TO APPARATUS FOR APPLYING TREAD MATERIAL TO TYRES (71) We, BARWELL MACHINE AND RUBBER GROUP LIMITED, a British Company, of Swavesey, Cambridge, CB4 5QX, ANDREW ROBERT CLAYTON, a British Subject, of Box 119, Route 10, Salisbury, State of North Carolina 28144, United States of America, DONALD JAMES LANHAM, a British Subject, of 48 Middle Watch, Swavesey, Cambridge, and PHILIP RAYMOND GORDON BARWELL, a British Subject, of 8 Church Lane, Girton, Cambridge, do hereby declare this invention for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to an apparatus for applying tread material to tires.
The invention provides an apparatus for extruding uncured tread material onto a peripheral surface of a tyre carcass comprising: extruder means for expelling tread material under pressure, tyre stand means for supporting a tyre carcass in spaced relation to said extruder means for rotation of the tyre carcass in one direction during extrusion, die means mounted on said extruder means for directing expelled tread material directly onto a peripheral surface of a tyre carcass supported by said tyre stand means and rotating in said one direction to form a layer encircling the tyre carcass and simultaneously to bond the layer to the carcass, the die means having a central outlet for directing tread material onto a crown portion of the peripheral surface of the tyre and two wing elements located one on either side of the central outlet and facing towards each other to direct tread material onto sidewall portions of the peripheral surface of the tyre carcass to either side of the crown portion, and modulator means located in the die means for controlling the distribution of flow of tread material through the die means to tend to divert the tread material towards the wing elements of the die means, the central outlet and wing elements of the die means each having leading and trailing edge members, with respect to said direction of rotation, defining between them extrusion openings for facing the peripheral surface of the tyre carcass and spaced in the direction of rotation of the tyre carcass, the trailing edge members defining the profile of the layer of tread material to be extruded onto the tyre carcass, and the trailing edge member of the central outlet extending beyond the leading edge member thereof in the direction of flow of tread material through the central outlet so that, in use, a gap is formed between the leading edge member and the tyre carcass through which tread material can escape upstream,with respect to said direction of rotation, of the central outlet for form a bank of tread material adjacent the leading edge member of the central outlet to provide additional tread material for application to the tyre carcass when required.
The following is a description of a specific embodiment of the 15 invention, reference being made to the accompanying drawings, in which: Figure 1 is a perspective view of the apparatus of the present invention, illustrating the application of an under-tread layer to a tire carcass; Figure 2 is a perspective view of a die means incorporated in the apparatus of this invention; Figure 3 is an exploded perspective view of the die means of Figure 2; Figure 4 is an elevation view, taken from the position of a tire, of the die means of Figures 2 and 3; Figure 5 is a plan view, in section and partially in phantom, taken substantially along the line 5-5 in Figure 2; Figure 6 is an elevation view taken substantially along the line 6-6 in Figure 1; and Figure 7 is an enlarged elevation view, taken substantially along the line 7-7 in Figure 2.
While the apparatus of the present invention will be described hereinafter with more particular reference to the accompanying drawings, it is to be recognised at the outset of the following description that this invention contemplates the apparatus may take specific forms varying from that which is shown and will be described. Accordingly, the following description is to be taken as a broad teaching intended as permitting persons skilled in the applicable arts to apply this invention, and is not to be taken as restrictive on the scope of the invention.
Referring now more particularly to Figure 1, an extruder generally indicated at 10 supplies tread material 11 (Figure 6) under pressure and expels such materials for forming a layer 12 on the peripheral surface of a tire carcass 14. The extruder 10 is the type having a plurality of extruder barrels and a delivery valve which will permit mbber to be expelled successively from alternate ones of the barrels.
Alternatively an appropriate screw extruder may be used. The tread material preferably is a compound of natural rubber such as has heretofore been prepared for mold retreading of tires. As will be understood by persons skilled in the applicable arts, reloading one barrel of the extruder 10 while others are being prepared or are delivering tread material will permit substantially continuous extrusion of tread material in whatever quantity is required. Further, control over pressures employed to deliver or expel extruded tread material will provide control over the rate of expulsion of such material.
The apparatus of this invention additionally includes tire stand means generally indicated at 15 which includes suitable drive means (not shown) for rotating a tire carcass 14 undergoing renewal. The tire stand means 15 rotatably supports the tire carcass 14 in spaced relation from the extruder means 10.
The following more specific description will be directed particularly to the renewal of an off-the-road, heavy duty lugged tread tire.
However, it is to be noted that the structure to be described is usuable in connection with renewal or manufacture of any vehicle tire or wheel and is not to be taken as limited to the specific application described in some detail.
Mounted on the extruder means 10 is a die means generally 10 indicated at 18 which directs undertread material 11 expelled from the extruder 10 directly onto the peripheral surface of a rotating tire carcass mounted on the tire stand means 15. To the end of simultaneously forming an undertread layer encircling a rotating tire carcass and bonding the layer to the carcass, the die means engages sidewall portions of the peripheral surface of the tire carcass during rotation thereof by the tire stand means 15. Additionally, the die means 18, as pointed out more fully hereinafter, cooperates with an engaged tire carcass in defining bank areas for temporarily accumulating expelled undertread material and for maintaining during formation of the undertread layer 12 a bank of undertread material from which carcass nonuniformities are filled.
The die means 18 as shown more clearly in Figures 2-5 and 7 includes main body members 20, 21 heater plates 22, 23, a modulator plate 25 and an edge member 26 which, relative to the movement of the tire carcass past the die means, provides a trailing edge member, a central outlet being formed between the modulator plate 25 and the trailing edge member 26. The die means additionally includes right and left wing element 28, 29 and a plurality of reinforcing members 30 which span the body members 20, 21 upon the die means 18 being assembled.
Preferably, the heater plates 22, 23 incorporate electrical resistance heating elements which facilitate maintenance of ready flowability for undertread material being extruded through the dia means 18. As will be appreciated, heat generated by the electrical resistance elements is conducted to the other elements of the die means 18.
The modulator plate 25 and the trailing edge member 26 cooperate with a crown portion of the peripheral surface of a rotating tire carcass 14 in certain important ways in facilitating ready formation of the desired undertread layer. More particularly, the modulator plate 25 includes a generally transversely extending barrier element 31 and a leading edge 32 (relative to the movement of the tire carcass past the die means) spaced from the barrier element 31. The barrier element 31 is configured to have its greatest height in a medial portion of the modulator plate 25 (Figure 4) and to taper outwardly therefrom toward side edge or wing portions. The leading edge 32 of the modulator plate 25 bears spaced relation to the trailing edge member 26 and to the crown portion of the peripheral surface of the tire carcass 14, as shown more clearly in Figure 6.
More particularly, the trailing edge member 26 more closely approaches the crown portion than does the leading edge 32 provided by the modulator plate 25. Such an arrangement accommodates a spill-over of expelled undertread material from the location of application against the crown portion of the rotating tire carcass 14 (Figure 6) opposite the direction of tire carcass rotation and upstream of the leading edge thereby providing for the accumulation and maintenance of a rolling bank of undertread material as will be pointed out more fully hereinafter.
The wing elements 28, 29 of the die means 18 are mounted for widthwise adjustment relative to the central outlet of the die means 18, preferably accomplished by the provision of respective rack gears 35, 36 and cooperating pinions 37, 38. By manual rotation of the pinions, the wing elements may be moved together or apart to accommodate varying widths of tire carcasses being renewed. In use, the wing elements 28, 29 are brought into engage ment with the sidewall portions of the peripheral surface of a tire carcass undergoing renewal (Figure 5).
In accordance with further important features of the apparatus it will be noted that each of the wing elements 28, 29 includes trailing and leading edge members 28A, 28B, 29A, 29B. Each pair of edge members are spaced apart by dimensions slightly greater than the vertical distance between the edges defined by the trailing edge member 26 and the modulator plate 25 (Figures 2 and 6). Further, each pair of spaced apart members define therebetween a volume or area through which undertread material passes in forming wing portions of an undertread layer (Figures 1 and 5). Each of the volumes or areas thus defined functions as a bank area in filling carcass sidewall irregularities. As will be noted, the configuration of the barrier element 31 of the modulator plate 25 assures feeding of expelled undertread material into the sidewall bank areas, due to the angulation and decreasing vertical height thereof(Figures 4 and 5).
In use, a tire carcass 14 undergoing renewal is mounted on the tire stand means 15. The crown portion being brought into position adjacent the central outlet of the die means 18, and the wing elements 28, 29 are adjusted if required to assure the desired engagement with the side-wall portions of the tire carcass 14.
Extrusion of undertread material 11 is then begun, and the tire carcass 14 is driven in rotation. As will be appreciated, rotation of the tire carcass 14 during extrusion of undertread material 11 will cause an undertread layer to be formed about and bonded to the periphery of the tire carcass 14. While the depth of the crown surface portion of the undertread layer 12 and the overall radius thereof are determined in part by the spacing of the center of rotation of the tire carcass 14 from the trailing edge member 26 of the die means 18, the uniformity of supply of material to form that layer is determined by the characteristics of the modulator plate 25 and the wing elements 28, 29 described hereinabove.
As will be appreciated, an additional factor controlling the thickness and radial dimensions of the undertread layer 12 is the comparative rate of roation of the tire carcass 14 and rate of delivery of undertread material 11 by the extruder 10. Relatively fast rotation of the tire carcass 14 and relatively slow delivery of undertread material 16 may lead to an unduly thin undertread layer 12. The structural characteristics of the modulator plate 25, trailing edge member 26 and wing elements 28, 29 are so formed that a bank of undertread material accumalates and is accommodated adjacent the point of application of such material to the tire carcass 14. Thus, skived portions causing irregularities in the surface of the tire carcass 14 (as indicated in Figure 6) may readily be filled while the desired contour of the finished undertread layer is obtained. Additionally, achievement of a more uniform rolling radius for the rebuilt tire is facilitated.
Formation of an undertread layer on the tire carcass 14 may be followed by the application of lugs thereto and curing of the lugs.
In the drawings and specification, there has been set forth a preferred embodiment of the invention, and although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation.
WHAT WE CLAIM IS: 1. Apparatus for extruding uncured tread material onto a peripheral surface of a tyre carcass comprising: extruder means for expelling tread material under pressure, tyre stand means for supporting a tyre carcass in spaced relation to said extruder means for rotation of the tyre carcass in one direction during extrusion, die means mounted on said extruder means for directing expelled tread material directly onto a peripheral surface of a tyre carcass supported by said tyre stand means and rotating in said one direction to form a layer encircling the tyre carcass and simultaneously to bond the layer to the carcass, the die means having a central outlet for directing tread material onto a crown portion of the peripheral surface of the tyre and two wing elements located one on either side of the central outlet and facing towards each other to direct tread material onto side-wall portions of the peripheral surface of the tyre carcass to either side of the crown portion, and modulator means located in the die means for controlling the distribution of flow of tread material through the die means to tend to divert the tread material towards the wing elements of the die means, the central outlet and wing elements of the die means each having leading and trailing edge members, with respect to said direction of rotation, defining between them extrusion openings for facing the peripheral surface of the tyre carcass and spaced in the direction of rotation of the tyre carcass, the trailing edge members defining the profile of the layer of tread material to be extruded onto the tyre carcass, and the trailing edge member of the central outlet extending beyond the leading edge member thereof in the direction of flow of tread material through the central outlet so that, in use, a gap is formed between the leading edge member and the tyre carcass through which tread material can escape upstream, with respect to said direction of rotation, of the central outlet to form a bank of tread material adjacent the leading edge member of the central outlet to provide additional tread material for application to the tyre carcass when required.
2. An apparatus as claimed in Claim 1, wherein said modulator means comprises a barrier extending transversely of the die means for restricting flow of expelled tread material
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    ment with the sidewall portions of the peripheral surface of a tire carcass undergoing renewal (Figure 5).
    In accordance with further important features of the apparatus it will be noted that each of the wing elements 28, 29 includes trailing and leading edge members 28A, 28B, 29A, 29B. Each pair of edge members are spaced apart by dimensions slightly greater than the vertical distance between the edges defined by the trailing edge member 26 and the modulator plate 25 (Figures 2 and 6). Further, each pair of spaced apart members define therebetween a volume or area through which undertread material passes in forming wing portions of an undertread layer (Figures 1 and 5). Each of the volumes or areas thus defined functions as a bank area in filling carcass sidewall irregularities. As will be noted, the configuration of the barrier element 31 of the modulator plate 25 assures feeding of expelled undertread material into the sidewall bank areas, due to the angulation and decreasing vertical height thereof(Figures 4 and 5).
    In use, a tire carcass 14 undergoing renewal is mounted on the tire stand means 15. The crown portion being brought into position adjacent the central outlet of the die means 18, and the wing elements 28, 29 are adjusted if required to assure the desired engagement with the side-wall portions of the tire carcass 14.
    Extrusion of undertread material 11 is then begun, and the tire carcass 14 is driven in rotation. As will be appreciated, rotation of the tire carcass 14 during extrusion of undertread material 11 will cause an undertread layer to be formed about and bonded to the periphery of the tire carcass 14. While the depth of the crown surface portion of the undertread layer 12 and the overall radius thereof are determined in part by the spacing of the center of rotation of the tire carcass 14 from the trailing edge member 26 of the die means 18, the uniformity of supply of material to form that layer is determined by the characteristics of the modulator plate 25 and the wing elements 28, 29 described hereinabove.
    As will be appreciated, an additional factor controlling the thickness and radial dimensions of the undertread layer 12 is the comparative rate of roation of the tire carcass 14 and rate of delivery of undertread material 11 by the extruder 10. Relatively fast rotation of the tire carcass 14 and relatively slow delivery of undertread material 16 may lead to an unduly thin undertread layer 12. The structural characteristics of the modulator plate 25, trailing edge member 26 and wing elements 28, 29 are so formed that a bank of undertread material accumalates and is accommodated adjacent the point of application of such material to the tire carcass 14. Thus, skived portions causing irregularities in the surface of the tire carcass
    14 (as indicated in Figure 6) may readily be filled while the desired contour of the finished undertread layer is obtained. Additionally, achievement of a more uniform rolling radius for the rebuilt tire is facilitated.
    Formation of an undertread layer on the tire carcass 14 may be followed by the application of lugs thereto and curing of the lugs.
    In the drawings and specification, there has been set forth a preferred embodiment of the invention, and although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation.
    WHAT WE CLAIM IS: 1. Apparatus for extruding uncured tread material onto a peripheral surface of a tyre carcass comprising: extruder means for expelling tread material under pressure, tyre stand means for supporting a tyre carcass in spaced relation to said extruder means for rotation of the tyre carcass in one direction during extrusion, die means mounted on said extruder means for directing expelled tread material directly onto a peripheral surface of a tyre carcass supported by said tyre stand means and rotating in said one direction to form a layer encircling the tyre carcass and simultaneously to bond the layer to the carcass, the die means having a central outlet for directing tread material onto a crown portion of the peripheral surface of the tyre and two wing elements located one on either side of the central outlet and facing towards each other to direct tread material onto side-wall portions of the peripheral surface of the tyre carcass to either side of the crown portion, and modulator means located in the die means for controlling the distribution of flow of tread material through the die means to tend to divert the tread material towards the wing elements of the die means, the central outlet and wing elements of the die means each having leading and trailing edge members, with respect to said direction of rotation, defining between them extrusion openings for facing the peripheral surface of the tyre carcass and spaced in the direction of rotation of the tyre carcass, the trailing edge members defining the profile of the layer of tread material to be extruded onto the tyre carcass, and the trailing edge member of the central outlet extending beyond the leading edge member thereof in the direction of flow of tread material through the central outlet so that, in use, a gap is formed between the leading edge member and the tyre carcass through which tread material can escape upstream, with respect to said direction of rotation, of the central outlet to form a bank of tread material adjacent the leading edge member of the central outlet to provide additional tread material for application to the tyre carcass when required.
  2. 2. An apparatus as claimed in Claim 1, wherein said modulator means comprises a barrier extending transversely of the die means for restricting flow of expelled tread material
    through the central outlet of the die means to tend to divert portions of the material towards the wing elements of the die means.
  3. 3. An apparatus as claimed in Claim 2, wherein the height of the barrier is greatest at the centre of the die means, and the barrier tapers towards the ends thereof past which tread material is to be supplied to the wing elements.
  4. 4. An apparatus as claimed in any of the preceding claims, wherein the wing elements of the die means are mounted for adjustment across the central outlet to vary the spacing of the wing element to suit tyres of differing cross-sectional widths.
  5. 5. An apparatus as claimed in Claim 4, wherein means are provided for adjusting the spacing of the wing elements across the central outlet.
  6. 6. An apparatus for extruding uncured tread material onto a tyre carcass substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
GB31097/76A 1976-07-26 1976-07-26 Apparatus for applying tread material to tyres Expired GB1590378A (en)

Priority Applications (18)

Application Number Priority Date Filing Date Title
GB31097/76A GB1590378A (en) 1976-07-26 1976-07-26 Apparatus for applying tread material to tyres
CA282,920A CA1100724A (en) 1976-07-26 1977-07-18 Apparatus and methods for applying tread material to tyres
AU27135/77A AU514823B2 (en) 1976-07-26 1977-07-19 Applying tread material to tyres
ZA00774323A ZA774323B (en) 1976-07-26 1977-07-19 Improvements in or relating to apparatus and methods for applying tread material to tyres
NZ184686A NZ184686A (en) 1976-07-26 1977-07-19 Extrusion of tread material directly on to tyre carcass
ZM57/77A ZM5777A1 (en) 1976-07-26 1977-07-20 Improvements in or relating to apparatus and methods for applying tread material to tyres
PT66827A PT66827B (en) 1976-07-26 1977-07-20 Improvements in or relating to apparatus and methods for applying tread material to tyres
BG7736984A BG29276A3 (en) 1976-07-26 1977-07-22 Method and apparatus for tread material application over pneumatic tyres
MX169970A MX144364A (en) 1976-07-26 1977-07-25 IMPROVEMENTS IN APPARATUS AND METHOD FOR APPLYING A BEARING MATERIAL TO TIRES
TR19803A TR19803A (en) 1976-07-26 1977-07-25 TIRES FOR APPARATING BACK MATERIAL TO EXTERIOR TIRES AND EQUIPMENT AND METHODS OR REMEDY RELATED TO THEM
BR7704879A BR7704879A (en) 1976-07-26 1977-07-25 IMPROVEMENT IN APPLIANCE TO EXTRUDE Treadmill Material and IMPROVEMENT IN THE PROCESS OF RENEWING TIRES
DE19772733518 DE2733518A1 (en) 1976-07-26 1977-07-25 METHOD AND DEVICE FOR RENEWING A TIRE
FI772275A FI772275A (en) 1976-07-26 1977-07-25
SU772512602A SU665787A3 (en) 1976-07-26 1977-07-25 Sheet material in multi-roll calender method and apparatus for restoring pneumatic tyres
JP8913177A JPS5314780A (en) 1976-07-26 1977-07-25 Apparatus and method for extruding tread material onto peripheral surface of tire body
FR7722974A FR2359700A1 (en) 1976-07-26 1977-07-26 APPARATUS AND METHOD FOR APPLYING TREAD MATERIAL TO TIRES
ES461025A ES461025A1 (en) 1976-07-26 1977-07-26 Apparatus for applying tread material to tyres
GR54034A GR71899B (en) 1976-07-26 1981-01-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB31097/76A GB1590378A (en) 1976-07-26 1976-07-26 Apparatus for applying tread material to tyres

Publications (1)

Publication Number Publication Date
GB1590378A true GB1590378A (en) 1981-06-03

Family

ID=10317928

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31097/76A Expired GB1590378A (en) 1976-07-26 1976-07-26 Apparatus for applying tread material to tyres

Country Status (18)

Country Link
JP (1) JPS5314780A (en)
AU (1) AU514823B2 (en)
BG (1) BG29276A3 (en)
BR (1) BR7704879A (en)
CA (1) CA1100724A (en)
DE (1) DE2733518A1 (en)
ES (1) ES461025A1 (en)
FI (1) FI772275A (en)
FR (1) FR2359700A1 (en)
GB (1) GB1590378A (en)
GR (1) GR71899B (en)
MX (1) MX144364A (en)
NZ (1) NZ184686A (en)
PT (1) PT66827B (en)
SU (1) SU665787A3 (en)
TR (1) TR19803A (en)
ZA (1) ZA774323B (en)
ZM (1) ZM5777A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0139604A2 (en) * 1983-07-29 1985-05-02 The Goodyear Tire & Rubber Company Apparatus and method for making a band from strips
US5017118A (en) * 1989-06-16 1991-05-21 The Goodyear Tire & Rubber Company Apparatus for forming a coextrusion from extruded strips
DE4326370A1 (en) * 1993-08-05 1995-02-09 Az Formen & Maschbau Gmbh Retreading device
EP0820849A2 (en) * 1996-07-25 1998-01-28 AZ Formen- und Maschinenbau GmbH Extrusion apparatus for tyres
CN1050323C (en) * 1993-08-05 2000-03-15 Az造型和机械制造有限公司 Retreading device
EP1418043A2 (en) * 2002-11-08 2004-05-12 The Goodyear Tire & Rubber Company A method and apparatus for forming an annular elastomeric tire component
US7780809B2 (en) 2005-08-04 2010-08-24 The Goodyear Tire & Rubber Company Method for forming elastomeric tire component and a tire

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2648388B1 (en) * 1989-06-16 1992-09-04 Goodyear Tire & Rubber EXTRUSION APPARATUS WITH ROLLER DIE, PARTICULARLY FOR A COEXTRUDED ELEMENT FOR A TIRE
US5342473A (en) * 1991-08-20 1994-08-30 Nrm Steelastic, Inc. Apparatus for applying hot cushion gum to a tire carcass
DE10020414B4 (en) 2000-04-26 2004-02-12 A-Z Formen- Und Maschinenbau Gmbh Tread application device
CN106393761A (en) * 2015-08-10 2017-02-15 青岛软控机电工程有限公司 Middle cushion rubber extruder
CN113021861B (en) * 2021-03-24 2022-12-27 山东省三利轮胎制造有限公司 Forming equipment for tyre thread

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Publication number Priority date Publication date Assignee Title
EP0139604A2 (en) * 1983-07-29 1985-05-02 The Goodyear Tire & Rubber Company Apparatus and method for making a band from strips
EP0139604A3 (en) * 1983-07-29 1986-02-26 The Goodyear Tire & Rubber Company Apparatus and method for making a band from strips
US5017118A (en) * 1989-06-16 1991-05-21 The Goodyear Tire & Rubber Company Apparatus for forming a coextrusion from extruded strips
DE4326370A1 (en) * 1993-08-05 1995-02-09 Az Formen & Maschbau Gmbh Retreading device
US5458727A (en) * 1993-08-05 1995-10-17 Az Formen- Und Maschinenbau Gmbh Direct extrusion cushion-gumming and skive-filling of tire casings for retreading
CN1050323C (en) * 1993-08-05 2000-03-15 Az造型和机械制造有限公司 Retreading device
EP0820849A2 (en) * 1996-07-25 1998-01-28 AZ Formen- und Maschinenbau GmbH Extrusion apparatus for tyres
EP0820849A3 (en) * 1996-07-25 1999-04-14 AZ Formen- und Maschinenbau GmbH Extrusion apparatus for tyres
EP1418043A2 (en) * 2002-11-08 2004-05-12 The Goodyear Tire & Rubber Company A method and apparatus for forming an annular elastomeric tire component
EP1418043A3 (en) * 2002-11-08 2005-05-25 The Goodyear Tire & Rubber Company A method and apparatus for forming an annular elastomeric tire component
CN100522579C (en) * 2002-11-08 2009-08-05 固特异轮胎和橡胶公司 Method and apparatus of forming annular elastic tyre parts
US7780809B2 (en) 2005-08-04 2010-08-24 The Goodyear Tire & Rubber Company Method for forming elastomeric tire component and a tire

Also Published As

Publication number Publication date
FR2359700A1 (en) 1978-02-24
JPS5314780A (en) 1978-02-09
AU514823B2 (en) 1981-02-26
TR19803A (en) 1979-12-28
BR7704879A (en) 1978-04-25
CA1100724A (en) 1981-05-12
FI772275A (en) 1978-01-27
ES461025A1 (en) 1978-05-16
SU665787A3 (en) 1979-05-30
PT66827A (en) 1977-08-01
DE2733518A1 (en) 1978-02-09
MX144364A (en) 1981-10-05
ZM5777A1 (en) 1978-03-21
GR71899B (en) 1983-08-11
PT66827B (en) 1978-12-27
AU2713577A (en) 1979-01-25
BG29276A3 (en) 1980-10-15
FR2359700B1 (en) 1982-07-30
ZA774323B (en) 1978-09-27
NZ184686A (en) 1981-03-16

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PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee