WO2013073605A1 - ゴム部材の接合装置及び接合方法 - Google Patents

ゴム部材の接合装置及び接合方法 Download PDF

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Publication number
WO2013073605A1
WO2013073605A1 PCT/JP2012/079623 JP2012079623W WO2013073605A1 WO 2013073605 A1 WO2013073605 A1 WO 2013073605A1 JP 2012079623 W JP2012079623 W JP 2012079623W WO 2013073605 A1 WO2013073605 A1 WO 2013073605A1
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WO
WIPO (PCT)
Prior art keywords
joining
roll
rubber member
rubber
pressing
Prior art date
Application number
PCT/JP2012/079623
Other languages
English (en)
French (fr)
Inventor
一史 山元
Original Assignee
株式会社ブリヂストン
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 株式会社ブリヂストン filed Critical 株式会社ブリヂストン
Priority to CN201280055563.XA priority Critical patent/CN103930258B/zh
Priority to US14/357,627 priority patent/US9676174B2/en
Priority to EP12849841.7A priority patent/EP2781339B1/en
Publication of WO2013073605A1 publication Critical patent/WO2013073605A1/ja

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
    • B30B3/005—Roll constructions
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/82—Testing the joint
    • B29C65/8207—Testing the joint by mechanical methods
    • B29C65/8215—Tensile tests
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/344—Stretching or tensioning the joint area during joining
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7214—Fibre-reinforced materials characterised by the length of the fibres
    • B29C66/72141—Fibres of continuous length
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7375—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured
    • B29C66/73751—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being uncured, i.e. non cross-linked, non vulcanized
    • B29C66/73752—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being uncured, i.e. non cross-linked, non vulcanized the to-be-joined areas of both parts to be joined being uncured
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81419—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled and flat
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81423—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • B29C66/81435—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
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    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81463—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • B29C66/81465—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint one placed behind the other in a single row in the feed direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
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    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81463—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • B29C66/81469—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint one placed next to the other in a single line transverse to the feed direction, e.g. shoulder to shoulder sonotrodes
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • B29C66/8362—Rollers, cylinders or drums moving relative to and tangentially to the parts to be joined
    • 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
    • B29D30/42—Endless textile bands without bead-rings
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/116—Single bevelled joints, i.e. one of the parts to be joined being bevelled in the joint area
    • B29C66/1162—Single bevel to bevel joints, e.g. mitre joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/341—Measures for intermixing the material of the joint interlayer
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
    • 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
    • B29D30/42—Endless textile bands without bead-rings
    • B29D2030/421—General aspects of the joining methods and devices for creating the bands
    • B29D2030/423—Joining by overlapping
    • 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
    • B29D30/42—Endless textile bands without bead-rings
    • B29D2030/421—General aspects of the joining methods and devices for creating the bands
    • B29D2030/424—General aspects of the joining methods and devices for creating the bands the joining devices being angularly adjustable
    • 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
    • B29D30/42—Endless textile bands without bead-rings
    • B29D2030/421—General aspects of the joining methods and devices for creating the bands
    • B29D2030/425—General aspects of the joining methods and devices for creating the bands the joining devices being laterally adjustable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor

Definitions

  • the present invention relates to a rubber member joining apparatus and a rubber member joining method for joining the end portions of rubber members together.
  • the rubber members for example, the tire component members are overlapped with each other on the molding drum up and down, that is, with one on the outer side in the radial direction of the tire molding drum and the other on the inner side, and a pressing roll is pressed against the overlapped portion.
  • a joining apparatus that joins the end portions is already well known in a tire forming apparatus (see, for example, Patent Document 1).
  • FIG. 9 is a perspective view schematically showing the principle of joining of such tire constituent members.
  • a tire constituent member 100 having a predetermined length made of a rubber material is wound around a molding drum, the end portions 101 and 102 are overlapped vertically, and the overlapped portion rolls.
  • the pressing roll 110 is pressed.
  • the end portions 101 and 102 of the tire constituent member 100 are joined using the adhesiveness of the unvulcanized rubber to form a cylindrical body such as a carcass ply.
  • the present invention has been made in view of the above-described conventional problems in joining ends of rubber members having a predetermined length, and the purpose thereof is to overlap both ends of a rubber member as in the past, Even in the case of a small joining area where the joining strength cannot be maintained by simply pressing the overlapped portion with a conventional pressing roll, the joining area is increased at the time of joining and the necessary joining force (or adhesive force). It is to be able to join with.
  • the present invention is a joining device for joining the end portions of the rubber member, one end on the upper side and the other on the lower side, and joining the end portions of the rubber member to each other.
  • a pressing roll that rotates about an inclined axis that is inclined with respect to the pressing roll, a means for pressing the rolling surface of the pressing roll against the upper end of the overlapped rubber member, and the rolling surface of the pressing roll on the upper side of the rubber member
  • a moving device that rolls in a state of being pressed against the end, and pressing the rolling surface of the pressing roll against the upper end of the rubber member to roll, thereby extending the upper end,
  • This is a joining device for rubber members for joining by increasing the joining area between the joining end portions.
  • the present invention relates to a joining method for joining the end portions of the rubber member, one end on the upper side and the other on the lower side, and joining the end portions of the rubber member to each other.
  • This is a method for joining rubber members for joining by increasing the joining area.
  • the conventional pressing roll which joins the end portions of the rubber members by overlapping them and pressing them from above joins the rubber member by increasing the bonding area even when the bonding force is insufficient. Can be joined with a joining force.
  • FIG. 1A is the perspective view
  • FIG. 1B is the front view
  • 2A is a plan view of the disk-shaped roll
  • FIG. 2B is a side view seen from a direction orthogonal to the line L1 in FIG. 2A.
  • It is a principal part front view which shows typically the structure of the joining apparatus of the tire structural member of this embodiment.
  • FIG. 5 is a cross-sectional view taken in the YY direction of FIG. 4 and shows a state where a disc-shaped roll is mounted on a roll shaft attached to the support.
  • It is a perspective view which shows the edge part of the joined tire structural member.
  • FIG. 1A shows a disk-shaped roll
  • FIG. 1A is a perspective view thereof
  • FIG. 1B is a front view thereof
  • FIG. 2A is a plan view of the disk-shaped roll
  • FIG. 2B is a side view as viewed from a direction orthogonal to the line L1 in FIG.
  • FIG. 1A shows a disk-shaped roll
  • FIG. 1A is a perspective view thereof
  • FIG. 1B is a front view thereof
  • FIG. 2A is a plan view of the disk-shaped roll
  • FIG. 2B is a side view as viewed from a direction orthogonal to the line L1 in FIG.
  • FIG. 1A shows a disk-shaped roll
  • FIG. 1A is a perspective view thereof
  • FIG. 1B is a front view thereof
  • FIG. 2A is a plan view of the disk-shaped roll
  • FIG. 2B is a side view as viewed from a direction orthogonal to the line L1 in FIG.
  • FIG. 1A shows
  • the disc-shaped roll 45 rolls on the upper and lower end portions 71 and 72 of the tire member 70 in the embodiment, that is, on the upper and lower ends of the tire constituent member 70 in the center. It has a rolling surface 45b inclined toward it, and is preferably formed in a truncated cone shape composed of upper and lower flat surfaces. As shown in FIG. 2B, the disc-shaped roll 45 is rotatably supported via a bearing 47 on a roll shaft 46 that is an inclined shaft fixed to a support body 45 a of a joining apparatus described later.
  • the roll shaft 46 is disposed so as to be inclined by a predetermined inclination angle ⁇ 1 in the direction of the joint end 73 with respect to the traveling direction in plan view, and on the upper side of the tire constituent member 70. Is inclined by ⁇ 2 in a forward tilting direction with respect to the end portion 71 of the.
  • the rolling surface 45b of the disc-shaped roll 45 is formed on a rough surface having a plurality of convex shapes, concave grooves, or a plurality of protrusions and depressions by knurling or the like.
  • the inclined rolling surface 45 b around the roll shaft 46 is placed on the upper end 71 of the tire constituent member 70. Rolls when pressed.
  • the disc-shaped roll 45 is arranged so as to be inclined by ⁇ 1 (FIG. 2A) with respect to the traveling direction and by ⁇ 2 (FIG. 2B) with respect to the surface of the end portion 71.
  • the disc-shaped roll 45 has a roughened surface on its joint surface.
  • a larger shearing force S can be generated by the frictional force than when the end portion 71 in contact is not roughened, and the end portion 71 can be stretched more effectively.
  • the overlapping width of the end portions 71 and 72 is made smaller than the width (pressing width) of the rolling surface 45b of the disc-shaped roll 45, a shearing force is applied to the end portion 71 to stretch the end portion 71. Further, the end 71 is uniformly stretched.
  • FIG. 3 is a main part front view schematically showing the configuration of this joining apparatus.
  • the joining device 1 includes a pair of joining units 30 that joins a cylindrical forming drum 2 whose axis is held in the horizontal direction and a tire constituent member 70 arranged side by side in the axial direction of the forming drum 2.
  • the joining apparatus 1 includes a moving unit 10 that moves the pair of joining units 30 in the axial direction and the radial direction (left and right and up and down in FIG. 1) of the forming drum 2, and the moving unit 10 is an outer periphery of the forming drum 2. It is arranged upward along the surface.
  • the molding drum 2 is a support that supports the tire constituent member 70 to be joined at the time of molding an unvulcanized tire, and is configured to be rotatable around an axis and to be expanded or contracted by a bladder or the like provided on the outer periphery. .
  • the tire drum 70 is wound around a predetermined position on the outer periphery of the molding drum 2 by one turn, and the cylindrical tire drum 70 is held concentrically.
  • the molding drum 2 is rotationally driven by a connected drive device (not shown), a drive source such as a motor provided in the drive device, and a transmission mechanism for the rotational power thereof, so that the tire constituent member 70 is predetermined. It is possible to stop at an arbitrary rotation angle by rotating at a rotation speed of.
  • the tire constituent member 70 is supplied from a supply device (not shown) and wound toward the forming drum 2, and the front end portion and the rear end portion of the winding are arranged so as to overlap each other.
  • the tire component 70 is well known per se, and is formed by coating an organic fiber or steel cord with unvulcanized rubber, and a plurality of cords (not shown) are formed in the rubber on the surface. They are arranged in parallel so as to extend along the axial direction of the forming drum 2.
  • the forming drum 2 supports both end portions 71 and 72 to be joined of the tire constituent member 70 in a state where they overlap each other, and the joining device 1 is provided on each of the end portions 71 and 72 that are superposed on the top and bottom of the tire constituent member 70.
  • the joining unit 30 is moved along the joining ends 73 of the ends 71 and 72 to join the ends 71 and 72 together.
  • the joining apparatus 1 is comprised symmetrically on both sides of the center part CL of the axial direction of the forming drum 2. Therefore, the following description will be given on one side (the left side in the figure) across the central portion CL.
  • the moving means 10 is arranged so that the guide rail 11 spanned in parallel with the axis of the forming drum 2, the screw shaft 12 arranged in parallel above the guide rail 11, and the rotating shaft 13 ⁇ / b> A in parallel with the screw shaft 12.
  • the moving means 10 rotatably supports the screw shaft 12 by this frame, and hangs an endless belt 16 on a driven pulley 14 fixed to the screw shaft 12 and a driving pulley 15 fixed to the rotating shaft 13A of the motor 13. Handing over. Further, the moving means 10 transmits the rotational power of the motor 13 to the screw shaft 12 through the drive pulley 15, the belt 16 and the driven pulley 14, and rotates the screw shaft 12 in both directions around the axis at a predetermined speed.
  • the moving means 10 has a mounting bracket 17 attached to the screw shaft 12 and a piston / cylinder mechanism 18 fixed to the side surface thereof downward.
  • the mounting bracket 17 is driven by a screw transmission mechanism constituted by a ball screw or the like through which the screw shaft 12 penetrates. That is, the mounting bracket 17 has a screw hole and a guide hole through which the guide rail 11 slidably passes.
  • the mounting bracket 17 is guided by the guide rail 11 as the screw shaft 12 rotates, and the axis of the forming drum 2 It moves at a predetermined speed in both directions.
  • a piston rod 18P that advances and retreats from the cylinder 18S is disposed above the forming drum 2 toward the axis thereof, and the piston rod 18P is advanced and retracted and attached to the tip (lower end).
  • the joining unit 30 is moved closer to or away from the tire constituent member 70. That is, the piston / cylinder mechanism 18 presses the disk-shaped roll 45 or the like attached to the joining unit 30 to the upper end 71 of the tire constituent member 70 to be joined with a predetermined pressure or lifts it from there.
  • the joining unit 30 includes a rectangular plate-shaped fixing member 60 fixed to the piston rod 18P of the moving means 10, and a rectangular frame body 31 attached to the lower surface of the fixing member 60.
  • the frame body 31 is a tire. It arrange
  • FIG. 4 is a bottom view of the joining unit 30 as viewed from the direction of the arrow X in FIG. 3 and shows a configuration on the frame body 31 side through the fixing member 60 (shown by a dotted line in FIG. 4).
  • the joining unit 30 includes a lifting prevention roll 32, a zipper roll 40, and a disk-like roll 45 that is a pressing roll in the joining direction of the frame 31 from the front side (left side) to the rear side (right side).
  • a small-diameter side pressing roll (preferably ring-shaped) 48 which is another pressing roll, is attached adjacent to the disc-shaped roll 45 (on the lower side in the figure).
  • a rear pressing roll (a ring-shaped roll in the present embodiment) 50 which is another pressing roll, is disposed on the rear side of the disk-shaped roll 45.
  • the lifting prevention roll 32 and the zipper roll 40 are supported by the support bodies 32a and 40a so as to be rotatable around the axis, and the support bodies 32a and 40a are connected to the fixing member 60 through biasing means described later. ing. Further, the disk-shaped roll 45 is also connected to the fixing member 60 through the urging means in the same manner as the support member 45a. On the other hand, the ring-shaped roll 50 is directly attached to the fixing member 60.
  • the roll-up prevention roll 32 is rotatably supported by a support body 32a, the outer peripheral surface is formed into a concave curved surface shape with a curvature corresponding to the surface shape of the molding drum 2, and the axial direction is the axis of the molding drum 2. They are arranged in a direction perpendicular to the direction.
  • the lifting prevention roll 32 presses against both ends 71 and 72 of the tire constituent member 70 and presses the portions of the both ends 71 and 72 overlapped with each other and the vicinity thereof against the forming drum 2 while rolling.
  • the zipper roll 40 has a cylindrical shape, and one end thereof is supported by the shaft supports 40a on both sides. Further, the zipper roll 40 is arranged symmetrically across the joining end 73 of the tire constituent member 70, and each axis is inclined at a predetermined angle in the traveling direction from a line orthogonal to the traveling direction.
  • the angle is, for example, an angle between 5 ° and 30 °, and the intersection of both axes is located on the joint end 73.
  • the zipper roll 40 has a plurality of projections 41 protruding in the axial direction at equal intervals along the mutually opposing edges, and the projections 41 and the recesses between them are formed on the joint end 73 side. Are alternately provided at the same pitch in the circumferential direction.
  • the protrusions 41 and the recesses are alternately arranged along the circumferential direction, and a part of the protrusions 41 enter between the protrusions 41 (the recesses) on the other side and mesh with each other, thereby rotating at a constant speed synchronously. To do.
  • each projection 41 abuts against the end portions 71 and 72 of the tire constituent member 70 and is pressed against a predetermined range of the end portions 71 and 72 to draw the end portions 71 and 72 together to form the tire.
  • the slack of the member is eliminated and the member is correctly positioned on the forming drum 2.
  • FIG. 5 is a cross-sectional view taken in the YY direction of FIG. 4 and shows a state where the disc-shaped roll 45 is mounted on the roll shaft 46 attached to the support body 45a.
  • the roll shaft 46 is inclined as illustrated with respect to the end portion 71 of the tire constituent member.
  • a side pressing roll 48 adjacent to the disk-shaped roll 45 is rotatably attached to a roll shaft 48 a fixed to the same support 45 a as the disk-shaped roll 45 via a bearing 49.
  • a plurality of grooves are provided at equal intervals on the circumferential surface of the side pressing roll 48, and the side pressing roll 48 is arranged side by side on the right side, that is, on the outer side (joining end side) of the disc-shaped roll 45 in FIG. 5.
  • the side pressing roll 48 contacts the end 72 which is the lower side of the tire constituent member 70. Hold it in contact with it so that it does not move with the upper end 71.
  • 62 is an urging means such as a mechanical or fluid spring attached to the frame 31, and the frame 31 is connected to the fixing member 60 via these urging means 62.
  • the ring-shaped roll 50 is directly connected to the fixing member 60 and is free from being in contact with the tire constituent member 70, and the lower end of the ring-shaped roll 50 is as shown in FIG. 32, the zipper roll 40, and the disk-shaped roll 45 are located above the line connecting the lower ends. Therefore, when the piston rod 18P of the piston / cylinder mechanism 18 is operated and the fixing member 60 is lowered in the state of FIG. 3, first, the lifting prevention roll 32, the zipper roll 40 and the disc-shaped roll 45 are moved to the upper end of the tire constituent member 70.
  • the fixing member 60 is further lowered against the urging force of the urging means 62, and when the ring-shaped roll 50 comes into contact with the end portion 71, the ring-shaped roll 50 is applied to the rubber material of the end portion 71. Press down to stop and stop descending.
  • the anti-lifting roll 32, the zipper roll 40 and the disc-shaped roll 45 are caused by a resistance against the urging force of the urging means 62, and the ring-shaped roll 50 is caused by the piston / cylinder mechanism 18.
  • the end portions 71 are pressed by the pressing force to join the end portions 71 and 72 to each other.
  • the pressing force of the ring-shaped roll 50 is greater than the rolls 32, 40, 45 with the urging means 62 interposed, because the pressing force of the piston rod 18 ⁇ / b> P acts directly.
  • the control device includes a microprocessor (MPU) (not shown), a ROM (Read Only Memory) that stores programs for various control processes, and a RAM (Random Access Memory) that temporarily stores data that the MPU directly accesses. And so on.
  • MPU microprocessor
  • ROM Read Only Memory
  • RAM Random Access Memory
  • one of the joining units 30 (left side in FIG. 3) is moved to the central portion CL of the forming drum 2 by the moving means 10.
  • the moving means 10 is temporarily stopped, the piston / cylinder mechanism 18 is actuated to lower the joining unit 30, and the lift preventing rolls are placed on the end portions 71 and 72 (see FIG. 2) of the tire constituent member 70.
  • each zipper roll 40 and ring-shaped roll 50 are pressed (the pressure condition of the piston / cylinder mechanism 18 is preferably 20 kgf to 140 kgf).
  • the outer peripheral portions (protruding end portions of the protrusions 41) of the lifting prevention roll 32 and the zipper roll 40 are brought into contact with the end portions 71 and 72 of the tire constituent member 70.
  • the moving means 10 is operated to move the joining unit 30 along the axial direction of the molding drum 2, that is, along the joining end 73 of the tire constituent member 70. Since the lifting prevention roll 32, the zipper roll 40, the disk-shaped roll 45, the side pressing roll 48, and the ring-shaped roll 50 are pressed against the end portions 71 and 72 of the tire constituent member 70, the movement of the joining unit 30 is performed. As a result, the tire rolls along the joining end 73 of the tire constituent member.
  • the lift prevention roll 32 rolls on the both ends 71 and 72 while pressing the both ends 71 and 72 sequentially, and the zipper roll 40 inclined in the opposite direction pulls the both ends 71 and 72. .
  • the shearing force generated by the rolling surface 45 b of the disk-shaped roll 45 that rolls acts on the upper end 71 of the tire constituent member 70 to stretch it, that is, bonding the overlapping portions of the ends 71 and 72.
  • Increase area At the same time, when the side pressing roll 48 holds the lower end 72 and the disk-shaped roll 45 extends the upper end 71, the lower end 72 does not move together with the upper end 71. To hold.
  • the ring-shaped roll 50 presses strongly the joining area
  • a heating means for heating the ring-shaped roll 50 from the inside or the outside of the ring-shaped roll 50. That is, by providing the heating means, the rolling surface of the ring-shaped roll 50 is heated to a predetermined temperature to maintain the temperature, and the rubber in the vicinity of both ends 71 and 72 of the tire constituent member 70 at the pressing (friction) position is removed.
  • the end portions 71 and 72 can be joined to each other with high joint strength by softening and enhancing the effect of joining the end portions 71 and 72 by the ring-shaped roll 50.
  • the other piston / cylinder mechanism 18 is operated to connect the joining unit 30 (on the right in FIG. 3) to the molding drum 2. Is lowered to the vicinity of the central portion CL.
  • the lowering position is a position where the joining on the left joining unit 30 has already been completed, and the position is moved in the direction opposite to the traveling direction of the right unit 30 from that position. That is, the pair of joining units 30 are moved in the opposite directions toward the outside in the axial direction of the forming drum 2 at the same speed, and the rolls 32 and 50, the zipper roll 40 and the disc-shaped roll 45 are moved along the end portions 71 and 72. And the end portions 71 and 72 are sequentially joined over the whole.
  • FIG. 6 is a perspective view showing the end portions 71 and 72 of the tire constituent member 70 joined as described above.
  • the tire constituent member 70 is joined in a state where the end portion 71 is extended and the joining region is increased.
  • An unvulcanized tire having a predetermined shape and structure is formed by arranging other tire constituent members on the joined tire constituent member 70, and various tires are manufactured by vulcanizing and molding the unvulcanized tire.
  • the joining unit 30 was comprised combining the disk-shaped roll 45 with the anti-lifting roll 32, the zipper roll 40, the ring-shaped roll 50, and the side press roll 48.
  • the direction of travel associated with rolling is restricted, straight running is ensured, and stable operation is possible.
  • an example of a joining device that joins the tire constituent member 70 on the molding drum 2 has been described.
  • a planar support, a conveyor, or the like is used.
  • the tire constituent member 70 can be similarly joined on a support other than the forming drum 2.
  • FIG. 7 shows that the tensile strength of the product according to the present invention and the conventional product is embedded in the carcass ply when the carcass ply formed by joining the end portions on the molding drum is pulled with the same tensile force. It is a graph showing the relationship between the extension of the cord interval and the bonding range (the length in the axial direction of the molding drum) of the joint.
  • ⁇ indicates a conventional product
  • ⁇ indicates an embodiment of the present invention.
  • FIG. 8 is a schematic view showing the carcass ply which is a conventional product and the carcass ply which is an embodiment of the present invention in comparison between before and after pulling.
  • the joining range is larger than that of the conventional product, and the distance between the cords C when pulled is smaller than that of the conventional product, that is, the tensile strength is excellent. It is shown that.
  • the overlapping width between the upper and lower end portions 71 and 72 of the tire constituent member 70 targeted in the present embodiment is preferably in the range of 0.1 mm to 10 mm.
  • stretching and joining the said upper edge part 71 with this joining apparatus is remarkable.
  • the overlap width is less than 0.1 mm, the absolute value of the overlap width is small in the first place, and the effect of extending the upper side is limited.
  • the thickness exceeds 10 mm, the absolute value of the overlap width is large, so that the required joining force can be obtained from the overlap width itself, and the effect is limited.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Textile Engineering (AREA)
  • Tyre Moulding (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

　ゴム部材の端部同士を重ねて接合する際に、接合面積を増大させることで従来よりも少ない接合面積で接合できるようにする。　ゴム部材（タイヤ構成部材）（７０）の一方の端部（７１）を上側に他方の端部（７２）を下側に重ね合わせて、前記ゴム部材（７０）の端部同士を接合するための接合装置であって、傾斜軸の回りで回転する押圧ロール（円盤状ロール）（４５）を、前記重ね合わせたゴム部材（７０）の上側端部（７１）に押し付けて転動させ、その時生じるせん断力で、前記上側端部（７１）を延伸させ、前記両端部（７１）、（７２）間の接合面積を増大する。

Description

ゴム部材の接合装置及び接合方法
　本発明は、ゴム部材の端部同士を突き合わせて接合するゴム部材の接合装置、及びゴム部材の接合方法に関する。
　ゴム部材、例えばタイヤ構成部材の端部同士を成形ドラム上で上下に、つまり、一方をタイヤ成形ドラムの半径方向外側、他方を同内側にして重ね合わせ、その重なった部分に押圧ロールを押し付けて端部同士を接合する接合装置は、タイヤの成形装置において既によく知られている（例えば特許文献１参照）。
　図９は、このようなタイヤ構成部材の接合の原理を模式的に示した斜視図である。
　この従来のタイヤ構成部材の接合装置では、ゴム材料でできた所定長さのタイヤ構成部材１００を成形ドラムに巻回して端部１０１、１０２同士を上下に重ね合わせ、重ね合わせた部分を転動する押圧ロール１１０で押圧する。これによって、タイヤ構成部材１００の端部１０１、１０２同士を、未加硫ゴムの粘着性を利用して接合してカーカスプライなどの筒状体を構成している。
　ところで、このようにタイヤ構成部材の両端部を重ね合わせ、その上から押圧ロール１１０で押し付けて接合する場合、当然のことながら重ね合わせた量（接合面積）が小さくなる（又は狭くなる）にしたがってその接合強度も小さくなる。そのため、一定の接合面積を確保しないと、必要な接合強度が保てなくなるという問題がある。
特開２０１１－１７３３９５号公報
　本発明は、所定長さのゴム部材の端部同士を接合する場合における前記従来の問題に鑑みてなされたものであって、その目的は、従来のようにゴム部材の両端を重ね合わせ、その重ねた部分を従来の押圧ロールで押圧するだけでは接合強度が保てないような小さな接合面積の場合であっても、接合の際に接合面積を増大させて必要な接合力（又は接着力）で接合できるようにすることである。
　本発明は、ゴム部材の端部を、一方を上側に他方を下側に重ね合わせて、前記ゴム部材の端部同士を接合するための接合装置であって、前記ゴム部材の端部表面に対して傾斜した傾斜軸の回りで回転する押圧ロールと、前記押圧ロールの転動面を前記重ね合わせたゴム部材の上側端部に押し付ける手段と、前記押圧ロールの転動面をゴム部材の上側端部に押し付けた状態で転動させる移動装置と、を有し、前記押圧ロールの転動面を前記ゴム部材の上側端部に押し付けて転動させることにより、前記上側端部を延伸させ、接合する端部間の接合面積を増大させて接合を行うゴム部材の接合装置である。
　本発明は、ゴム部材の端部を、一方を上側に他方を下側に重ね合わせて、前記ゴム部材の端部同士を接合するための接合方法であって、前記ゴム部材の端部表面に対して傾斜した傾斜軸の回りで回転する押圧ロールの転動面を前記重ね合わせたゴム部材の上側端部に押し付ける工程と、前記押圧ロールの転動面をゴム部材の上側端部に押し付けた状態で転動させる工程と、を有し、前記押圧ロールの転動面を前記ゴム部材の上側端部に押し付けて転動させることにより、前記上側端部を延伸させ、接合する端部間の接合面積を増大させて接合を行うゴム部材の接合方法である。
　本発明によれば、ゴム部材の端部同士を重ね合わせ、上から押圧して接合する従来の押圧ロールでは接合力が不足する場合であっても、接合面積を増大させてゴム部材を必要な接合力で接合することができる。
本発明の実施形態に係る接合装置で用いる円盤状ロールを示し、図１Ａはその斜視図、図１Ｂはその正面図である。 図２Ａは円盤状ロールの平面図であり、図２Ｂは図２Ａの線Ｌ１と直交する方向からみた側面図である。 本実施形態のタイヤ構成部材の接合装置の構成を模式的に示す要部正面図である。 図３の矢印Ｘ方向から見た接合ユニットの底面図である。 図４の矢視Ｙ－Ｙ方向でみた断面図であり、円盤状ロールをその支持体に取り付けたロール軸に装着した状態を示している。 接合したタイヤ構成部材の端部を示す斜視図である。 成型ドラム上で端部同士を接合して形成したカーカスプライを同じ引っ張り力で引張したときの、本発明の実施品と従来品の引っ張り強さを、カーカスプライに埋設されているコード間隔の延びと、接合部の接着範囲（成型ドラムの軸方向の長さ）との関係を表したグラフである。 従来品であるカーカスプライと本発明の実施品であるカーカスプライの、それぞれ引っ張り前と引っ張り後とを対比して示した模式図である。 従来の押圧ロールによるタイヤ構成部材の接合の原理を模式的に示す斜視図である。
　本発明の実施形態に係る接合装置を、添付図面を参照して説明する。
　まず、本接合装置で用いる押圧ロール（本実施形態では円盤状ロール）について説明する。
　図１は円盤状ロールを示し、図１Ａはその斜視図、図１Ｂはその正面図であり、図２Ａは円盤状ロールの平面図、図２Ｂは図２Ａの線Ｌ１と直交する方向からみた側面図である。
　本円盤状ロール４５は、図１Ａに示すように、上下に重ね合わせたゴム部材、即ち本実施形態ではタイヤ構成部材７０の上側及び下側の端部７１、７２上を転動する、中心に向かって傾斜した転動面４５ｂを有し、好ましくはその上下の平らな面からなる円錐台形に形成されている。
　円盤状ロール４５は、図２Ｂに示すように、後述する接合装置の支持体４５ａに固定された傾斜軸であるロール軸４６に軸受４７を介して回転自在に支承されている。
　ロール軸４６は、図２Ａに示すように、平面視でその進行方向に対してその接合端７３の方向に所定の傾斜角θ１だけ傾斜して配置されていると共に、タイヤ構成部材７０の上側の端部７１に対して、前傾する方向にθ２だけ傾斜して配置されている。また、円盤状ロール４５の転動面４５ｂには、その全体にわたり、ローレット加工等により複数の凸状や凹溝又は複数の凸起や凹みが形成された粗面に形成されている。
　円盤状ロール４５は、円盤状ロール４５を備えた後述する接合装置を移動させる際に、ロール軸４６の回りでその前記傾斜した転動面４５ｂがタイヤ構成部材７０の上側の端部７１上に押し付けられて転動する。ここで、円盤状ロール４５は、進行方向に対してθ１（図２Ａ）、前記端部７１の表面に対してθ２（図２Ｂ）だけ傾斜して配置されているため、接合装置により円盤状ロール４５を前記端部７１に押し付けながら移動させると、円盤状ロール４５は、転動時に図２Ａの線Ｌ１に沿って前記端部７１に当接し、線Ｌ１と直交する方向のせん断力Ｓを作用させる。
　タイヤ構成部材７０の端部７１にせん断力Ｓが作用すると、ゴム材料でできた前記端部７１は引き伸ばされ、したがって、端部７１と端部７２との重ね合わさった接合（接着）面積が増大し、その増大された接合面積により接合がなされる。
　そのため、従来のように、タイヤ構成部材７０の端部同士を重ね合わせた状態で、円筒状ロールを上側の端部７１上に押圧転動させただけでは必要な接合強度が得られない場合であっても、本円盤状ロール４５を用いることで必要な接合強度を得ることができる。また、接合前における前記端部７１、７２の重ね代が同じ場合には、より大きな接合力を得ることができる。
　本円盤状ロール４５には、その接合面に粗面加工が施されているが、粗面加工を行ったことにより、円盤状ロール４５をタイヤ構成部材７０上で押圧転動させる際に、その摩擦力により、当接した前記端部７１に粗面加工を施さない場合に比べて、より大きなせん断力Ｓを発生させることができ、前記端部７１の延伸をより効果的に行うことができる。
　また、前記端部７１、７２の重なり幅は、円盤状ロール４５の転動面４５ｂの幅（押し当て幅）よりも小さくすることで、前記端部７１にせん断力を作用して延伸させるときに、前記端部７１が一様に延伸される。
　次に、以上で説明した円盤状ロール４５を備えた接合装置について説明する。
　図３は、この接合装置の構成を模式的に示す要部正面図である。
　接合装置１は、図示のように、軸線が水平方向に保持された円筒状の成形ドラム２と、成形ドラム２の軸線方向に並べて配置された、タイヤ構成部材７０を接合する一対の接合ユニット３０とを備えている。また、接合装置１は、一対の接合ユニット３０を成形ドラム２の軸線方向及び半径方向（図１では左右及び上下方向）に移動させる移動手段１０を備え、移動手段１０が、成形ドラム２の外周面に沿って上方に配置されている。
　成形ドラム２は、未加硫タイヤの成形時に、接合するタイヤ構成部材７０を支持する支持体であり、軸線回りに回転可能で、かつ外周に設けられたブラダ等により拡縮可能に構成されている。また、成形ドラム２は、外周の所定位置にタイヤ構成部材７０がその１周分巻き付けられ、円筒状のタイヤ構成部材７０を同芯状に保持する。この成形ドラム２は、連結された駆動装置（図示せず）と、駆動装置に設けられたモータ等の駆動源と、その回転動力の伝達機構とにより回転駆動されて、タイヤ構成部材７０を所定の回転速度で回転させて任意の回転角で停止させることができる。
　タイヤ構成部材７０は、成形ドラム２に向かって供給装置（図示せず）から供給されて巻き付けられ、その巻き付けの先端部と後端部とが、互いに重なり合うようにして配置されている。
　タイヤ構成部材７０は、それ自体は周知のものであり、有機繊維やスチール製のコードを未加硫ゴムで被覆して形成され、表面のゴム内に、複数のコード（図示せず）が、成形ドラム２の軸線方向に沿って延びるように並列して配置されている。
　成形ドラム２は、タイヤ構成部材７０の接合する両端部７１、７２を上下に重なり合った状態で支持し、接合装置１は、タイヤ構成部材７０の上下に重なった端部７１、７２上で、各接合ユニット３０をその端部７１、７２の接合端７３に沿って移動させて端部７１、７２同士を接合する。
　なお、接合装置１は、成形ドラム２の軸線方向の中央部ＣＬを挟んで左右対称に構成されている。そこで、以下の説明は、中央部ＣＬを挟んだ一方側（図の左側）について行う。
　移動手段１０は、成形ドラム２の軸線と平行に架け渡されたガイドレール１１と、その上方に平行に配置されたネジ軸１２と、回転軸１３Ａがネジ軸１２と平行になるように配置されたモータ１３と、それらが取り付けられたフレーム（図示せず）と、を有する。
　移動手段１０は、このフレームによりネジ軸１２を回転自在に支持するとともに、ネジ軸１２に固定した従動プーリ１４と、モータ１３の回転軸１３Ａに固定した駆動プーリ１５に無端状のベルト１６を架け渡している。また、移動手段１０は、これら駆動プーリ１５、ベルト１６及び従動プーリ１４を介して、モータ１３の回転動力をネジ軸１２に伝達し、ネジ軸１２を軸線回りの両方向に所定速度で回転させる。
　移動手段１０は、ネジ軸１２に取り付けられた取付ブラケット１７と、その側面に下方に向けて固定されたピストン・シリンダ機構１８とを有している。
　取付ブラケット１７は、ネジ軸１２が貫通して螺合するボールネジなどで構成するネジ伝動機構により駆動される。即ち、この取付ブラケット１７は、ネジ孔と、ガイドレール１１が摺動自在に貫通する案内孔とを有し、ネジ軸１２の回転に伴い、ガイドレール１１により案内されて、成形ドラム２の軸線方向の両方向に所定速度で移動する。
　ピストン・シリンダ機構１８は、シリンダ１８Ｓから進退するピストンロッド１８Ｐが、成形ドラム２の上方に、その軸線に向けて配置されており、ピストンロッド１８Ｐを進退させて、その先端（下端）に取り付けた接合ユニット３０をタイヤ構成部材７０に接近又は離間させる。つまり、ピストン・シリンダ機構１８は、接合ユニット３０に取り付けた円盤状ロール４５等を、接合するタイヤ構成部材７０の上側の端部７１に所定圧力で押し付け或いはそこから引き上げる。
　接合ユニット３０は、移動手段１０のピストンロッド１８Ｐに固定された矩形板状の固定部材６０と、固定部材６０の下面に取り付けられた矩形状の枠体３１とを有し、枠体３１がタイヤ構成部材７０の接合部分に沿って配置されている。接合ユニット３０は、移動手段１０により固定部材６０と枠体３１が一体に移動する。
　図４は、接合ユニット３０を図３の矢印Ｘ方向から見た底面図であり、固定部材６０（図４では点線で示す）を透視して枠体３１側の構成を示している。
　接合ユニット３０には、図４に示すように、浮き上がり防止ロール３２、ジッパロール４０、押圧ロールである円盤状ロール４５が、枠体３１内に接合方向の前方側（左側）から後方側（右側）に向かって順に配置されており、円盤状ロール４５に隣接して（図では下側に）、他の押圧ロールである小径の側押圧ロール（好ましくはリング状である）４８が取り付けられている。また、円盤状ロール４５の後方側にさらに他の押圧ロールである後部押圧ロール（本実施形態ではリング状ロール）５０が配置されている。
　浮き上がり防止ロール３２、ジッパロール４０は、その支持体３２ａ、４０ａに支承されて軸線周りに回転可能に支持されており、支持体３２ａ、４０ａは固定部材６０に後述する付勢手段を介して連結されている。また、円盤状ロール４５はこれもその支持部材４５ａが同様に付勢手段を介して固定部材６０に連結されている。他方、リング状ロール５０は固定部材６０に直接取り付けられている。
　ここで、浮き上がり防止ロール３２は支持体３２ａで回転可能に支持され、外周面が成形ドラム２の表面形状に応じた曲率の凹曲面状をなす形状に形成され、軸線方向を成形ドラム２の軸線方向と直交する方向にして配置されている。
　浮き上がり防止ロール３２は、タイヤ構成部材７０の両端部７１、７２に押し付けられて転動しながら両端部７１、７２の上下に重ね合わさった部分及びその近傍を成形ドラム２に対して押さえる。
　ジッパロール４０は、円筒状をなし、一端部が、両側の軸支持体４０ａにより支持されている。また、ジッパロール４０は、タイヤ構成部材７０の接合端７３を挟んで対称に、かつ、それぞれの軸線が進行方向に直交する線から進行方向に所定角度傾けて配置されている。ここでは、前記角度は、例えば、５～３０°間の角度をなし、かつ両軸線同士の交点が接合端７３上に位置するように配置されている。
　ジッパロール４０は、互いの対向する縁部に沿って、それぞれ軸線方向に突出する複数の突起４１が周方向に等間隔で同数形成され、接合端７３側に、突起４１と、それらの間の凹みとが、周方向に交互に同一ピッチで設けられている。
　ジッパロール４０は、これら突起４１と凹みが周方向に沿って互い違いに配置され、突起４１の一部が他方側の突起４１間（凹み）に入り込んで互いに噛み合い、これにより同期して等速度で回転する。
　ジッパロール４０はその回転移動中、各突起４１がタイヤ構成部材７０の端部７１、７２に当接して、端部７１、７２の所定範囲に押し付けられて端部７１、７２を互いに引き寄せてタイヤ構成部材の弛み等をなくし、成形ドラム２上に正しく位置決めする。
　図５は、図４の矢視Ｙ－Ｙ方向でみた断面図であり、円盤状ロール４５をその支持体４５ａに取り付けたロール軸４６に装着した状態を示している。
　ロール軸４６は、既に述べたように、タイヤ構成部材の前記端部７１に対して図示のように傾斜している。
　円盤状ロール４５に隣接して側押圧ロール４８が円盤状ロール４５と同じ支持体４５ａに固定されたロール軸４８ａに対し、軸受４９を介して回転可能に取り付けられている。側押圧ロール４８は、その円周面には複数の溝が等間隔で設けられており、円盤状ロール４５の図５において右側つまり外側（接合端側）に並んで配置されている。
　側押圧ロール４８は、円盤状ロール４５の転動面４５ｂが、タイヤ構成部材７０の上側の端部７１に当接して延伸する際に、タイヤ構成部材７０の下側になる端部７２に当接してそれが上側の端部７１と一緒に動かないように保持する。
　また、図５において、６２は枠体３１に取り付けられた機械式或いは流体式バネなどの付勢手段であって、枠体３１は、これらの付勢手段６２を介して固定部材６０に連結されている。他方、既に述べたようにリング状ロール５０は直接固定部材６０に連結されており、タイヤ構成部材７０に当接していない自由な状態で、その下端は、図３に示すように、浮き上がり防止ロール３２、ジッパロール４０及び円盤状ロール４５の下端を結ぶ線よりも上側に位置している。
　したがって、図３の状態で、ピストン・シリンダ機構１８のピストンロッド１８Ｐを作動させて固定部材６０を下降すると、まず、浮き上がり防止ロール３２、ジッパロール４０及び円盤状ロール４５がタイヤ構成部材７０の上側端部７１に当接する。その後、これらの付勢手段６２による付勢力に抗して固定部材６０をさらに下降させ、リング状ロール５０が前記端部７１に当接したとき前記端部７１のゴム材料にリング状ロール５０を押し込むように加圧して下降を停止する。
　このような構成を採ることで、浮き上がり防止ロール３２、ジッパロール４０及び円盤状ロール４５は、前記付勢手段６２の付勢力に抗する抗力により、また、リング状ロール５０はピストン・シリンダ機構１８による押圧力により、それぞれ前記端部７１を押圧して両端部７１、７２同士の接合を行う。
　この場合、リング状ロール５０の押圧力はピストンロッド１８Ｐの押し下げ力が直接作用するため、付勢手段６２を介在させたロール等３２、４０、４５よりも大きい。
　次に、接合装置１により、ゴムで形成されたタイヤ構成部材７０の端部７１、７２同士を接合する手順、及び端部７１、７２同士を接合してタイヤ構成部材７０を製造する製造方法について説明する。以下の手順等は、制御装置（図示せず）により制御されて行われる。
　制御装置は、図示しない、例えばマイクロプロセッサ（ＭＰＵ）と、各種制御処理のためのプログラムを格納するＲＯＭ（Read Only Memory）と、ＭＰＵが直接アクセスするデータを一時的に格納するＲＡＭ（Random Access Memory）等を備えたマイクロコンピュータを有する。また、制御装置は、接続手段を介して装置各部が接続されており、接続された各部を制御して予め設定されたタイミングや条件で関連動作させて、接合のための各動作を実行させる。
　タイヤ構成部材７０（図１参照）の端部７１、７２同士を接合するときには、まず、その内側に配置されるインナーライナ等の部材を成形ドラム２の外周に配置した後、タイヤ構成部材７０を回転する成形ドラム２の外周に１周巻き付けて成形ドラム２を停止する。その際、その端部７１、７２同士を上下に重ね合わせるとともに、移動手段１０により接合ユニット３０を押し付け位置に配置する。
　次に、移動手段１０により、一方（図３では左方）の接合ユニット３０を、成形ドラム２の中央部ＣＬに移動させる。ここで移動手段１０を一旦停止して、ピストン・シリンダ機構１８を作動させて接合ユニット３０を下降させ、タイヤ構成部材７０の重ね合わせた端部７１、７２（図２参照）に、浮き上がり防止ロール３２、各ジッパロール４０、及び、リング状ロール５０を押し付ける（ピストン・シリンダ機構１８の圧力条件としては、２０ｋｇｆ～１４０ｋｇｆが好ましい）。これにより、浮き上がり防止ロール３２及びジッパロール４０の外周部（突起４１の突端部）を、タイヤ構成部材７０の端部７１、７２に当接させる。
　続いて、移動手段１０を作動させて、接合ユニット３０を成形ドラム２の軸線方向、つまりタイヤ構成部材７０の接合端７３に沿って移動させる。浮き上がり防止ロール３２と、ジッパロール４０と、円盤状ロール４５と、側押圧ロール４８と、リング状ロール５０は、タイヤ構成部材７０の端部７１、７２に押し付けられているため、接合ユニット３０の移動に伴いそれぞれタイヤ構成部材の接合端７３に沿って転動する。
　その際、浮き上がり防止ロール３２は、前記両端部７１、７２を順次押えながら、また互いに逆方向に傾斜したジッパロール４０は前記両端部７１、７２を引き寄せながら前記両端部７１、７２上を転動する。続いて転動する円盤状ロール４５の転動面４５ｂによるせん断力がタイヤ構成部材７０の上側の端部７１に作用してこれを延伸させる、つまり、端部７１、７２の重なり合った部分の接着面積を増大させる。同時に側押圧ロール４８が下側の端部７２を抑えて、円盤状ロール４５が上側の端部７１の延伸を行う際に、下側の端部７２が上側の端部７１と一緒に動かないように保持する。続いて、リング状ロール５０（図４参照）は、前記両端部７１、７２の増大された接合領域を強く押圧して、端部７１、７２同士を接合する。
　なお、リング状ロール５０の内部又は外部からリング状ロール５０を加熱する加熱手段（図示せず）を備えていることが好ましい。即ち、加熱手段を設けることにより、リング状ロール５０の転動面を所定温度に加熱して温度を維持し、押圧（摩擦）位置のタイヤ構成部材７０の両端部７１、７２の付近のゴムを軟化させ、リング状ロール５０による両端部７１、７２の接合する効果を高めて高い接合強度で端部７１、７２同士を接合することができる。
　以上のようにして、一方の接合装置１によるタイヤ構成部材の接合を少し行った後、他方のピストン・シリンダ機構１８を作動させて（図３では右方の）接合ユニット３０を、成形ドラム２の中央部ＣＬ近傍に下降させる。但し、降下位置はすでに左側の接合ユニット３０で接合が修了した位置とし、その位置から右側ユニット３０の進行方向とは逆向きに移動させる。つまり、一対の接合ユニット３０を、成形ドラム２の軸線方向外側に向かって互いに逆方向に同じ速度で移動させ、各ロール３２、５０、ジッパロール４０及び円盤状ロール４５を端部７１、７２に沿って転動させて端部７１、７２同士を全体に亘って順次接合する。
　図６は、以上のようにして接合したタイヤ構成部材７０の端部７１、７２を示す斜視図である。タイヤ構成部材７０は端部７１が延伸されて接合領域が増大した状態で接合されている。
　この接合したタイヤ構成部材７０に、他のタイヤ構成部材を配置する等して、所定形状及び構造の未加硫タイヤが成形され、未加硫タイヤを加硫成型して各種のタイヤが製造される。
　以上、本発明の実施形態について説明したが、本実施形態では、円盤状ロール４５を、浮き上がり防止ロール３２、ジッパロール４０、リング状ロール５０、側押圧ロール４８と組み合わせて接合ユニット３０を構成したことにより、転動に伴う進行方向が規制されて直進性が確保され安定した動作が可能である。
　また、本発明の実施形態として、成形ドラム２上でタイヤ構成部材７０を接合する接合装置に例を採って説明したが、この接合装置１を使用することで、平面状の支持体やコンベヤ等、成形ドラム２以外の支持体上でも、同様にタイヤ構成部材７０を接合できる。
　次に、タイヤ構成部材としてカーカスプライを例に採って、本発明の接合装置により接合して得た実施品と、前記従来の装置により接合を行った従来品について行った実験結果について説明する。
　図７は、成型ドラム上で端部同士を接合して形成したカーカスプライを同じ引っ張り力で引張したときの、本発明の実施品と従来品の引っ張り強さを、カーカスプライに埋設されているコード間隔の延びと、接合部の接着範囲（成型ドラムの軸方向の長さ）との関係を表したグラフである。
　図中、○は従来品を、また、×は本発明の実施品を示す。
　また、図８は、従来品であるカーカスプライと本発明の実施品であるカーカスプライの、それぞれ引っ張り前と引っ張り後とを対比して示した模式図である。
　図７及び８から明らかなように、本発明の実施品では接合範囲が従来品よりも大きく、また、引っ張ったときのコードＣ間の間隔が従来品よりも少ないこと、つまり引っ張り強さが優れていることが示されている。
　なお、実験の結果によれば、本実施形態で対象とするタイヤ構成部材７０の上側及び下側端部７１，７２同士の重ね幅については、０．１ｍｍ～１０ｍｍの範囲が好ましい。この範囲にある場合、前記上側の端部７１を本接合装置により延伸させて接合することによる効果が顕著である。重ね幅が０．１ｍｍ未満では、そもそも重ね幅の絶対値が小さく上側を延伸することによる効果は限定的である。逆に、１０ｍｍを越えると重ね幅の絶対値が大きいためその重ね幅自体から必要とする接合力が得られ、前記効果は限定的である。
　１・・・接合装置、２・・・成形ドラム、１０・・・移動手段、１１・・・ガイドレール、１２・・・ネジ軸、１３・・・モータ、１４・・・従動プーリ、１５・・・駆動プーリ、１６・・・ベルト、１７・・・取付ブラケット、１８・・・ピストン・シリンダ機構、３０・・・接合ユニット、３１・・・枠体、３２・・・浮き上がり防止ロール、４５・・・円盤状ロール、４５ａ・・・支持体、４５ｂ・・・転動面、４８・・・側押圧ロール、５０・・・リング状ロール、６０・・・固定部材、６２・・・付勢手段、７０・・・タイヤ構成部材、７１、７２・・・端部、７３・・・接合端、Ｃ・・・コード、ＣＬ・・・中央部。

Claims (10)

  1. 　ゴム部材の端部を、一方を上側に他方を下側に重ね合わせて、前記ゴム部材の端部同士を接合するための接合装置であって、
    　前記ゴム部材の端部表面に対して傾斜した傾斜軸の回りで回転する押圧ロールと、前記押圧ロールの転動面を前記重ね合わせたゴム部材の上側端部に押し付ける手段と、前記押圧ロールの転動面をゴム部材の上側端部に押し付けた状態で転動させる移動装置と、を有し、
    　前記押圧ロールの転動面を前記ゴム部材の上側端部に押し付けて転動させることにより、前記上側端部を延伸させ、接合する端部間の接合面積を増大させて接合を行うゴム部材の接合装置。
  2. 　請求項１に記載されたゴム部材の接合装置において、
    　前記押圧ロールは回転中心に向かって傾斜した前記転動面を備えた円盤状ロールであるゴム部材の接合装置。
  3. 　請求項２に記載されたゴム部材の接合装置において、
    　前記ゴム部材の前記端部の重ね合わせ幅は、前記円盤状ロールの転動面の幅よりも小さいゴム部材の接合装置。
  4. 　請求項３に記載されたゴム部材の接合装置において、
    　前記重ね合わせ幅は、０．１ｍｍ～１０ｍｍであるゴム部材の接合装置。
  5. 　請求項２に記載されたゴム部材の接合装置において、
    　前記円盤状ロールの前記ゴム部材に当接する転動面が粗面加工されているゴム部材の接合装置。
  6. 　請求項２に記載されたゴム部材の接合装置において、
    　前記円盤状ロールが前記ゴム部材の前記上側端部を延伸させるとき、前記ゴム部材の下側端部を拘束する側押圧ロールを有するゴム部材の接合装置。
  7. 　請求項２に記載されたゴム部材の接合装置において、
    　前記円盤状ロールは、接合ユニットに取り付けられており、前記接合ユニットの前記円盤状ロールの進行方向前方に前記ゴム部材の浮き上がり防止ロールが配置されているゴム部材の接合装置。
  8. 　請求項７に記載されたゴム部材の接合装置において、
    　前記接合ユニットにおいて、前記浮き上がり防止ロールと前記円盤状ロールの間にジッパロールが配置されているゴム部材の接合装置。
  9. 　請求項７に記載されたゴム部材の接合装置において、
    　前記接合ユニットにおいて、前記円盤状ロールの進行方向後方に後部押圧ロールが配置されているゴム部材の接合装置。
  10. 　ゴム部材の端部を、一方を上側に他方を下側に重ね合わせて、前記ゴム部材の端部同士を接合するための接合方法であって、
    　前記ゴム部材の端部表面に対して傾斜した傾斜軸の回りで回転する押圧ロールの転動面を前記重ね合わせたゴム部材の上側端部に押し付ける工程と、前記押圧ロールの転動面をゴム部材の上側端部に押し付けた状態で転動させる工程と、を有し、
    　前記押圧ロールの転動面を前記ゴム部材の上側端部に押し付けて転動させることにより、前記上側端部を延伸させ、接合する端部間の接合面積を増大させて接合を行うゴム部材の接合方法。
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US20140318681A1 (en) 2014-10-30
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US9676174B2 (en) 2017-06-13

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