JPH0673911B2 - 熱可塑性樹脂帯の端部相互の融着方法 - Google Patents

熱可塑性樹脂帯の端部相互の融着方法

Info

Publication number
JPH0673911B2
JPH0673911B2 JP4331600A JP33160092A JPH0673911B2 JP H0673911 B2 JPH0673911 B2 JP H0673911B2 JP 4331600 A JP4331600 A JP 4331600A JP 33160092 A JP33160092 A JP 33160092A JP H0673911 B2 JPH0673911 B2 JP H0673911B2
Authority
JP
Japan
Prior art keywords
thermoplastic resin
belt
mold
template
state
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 - Lifetime
Application number
JP4331600A
Other languages
English (en)
Other versions
JPH05254022A (ja
Inventor
功憲 奥西
誠 吉住
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.)
Nitta Corp
Original Assignee
Nitta Corp
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 Nitta Corp filed Critical Nitta Corp
Priority to JP4331600A priority Critical patent/JPH0673911B2/ja
Publication of JPH05254022A publication Critical patent/JPH05254022A/ja
Publication of JPH0673911B2 publication Critical patent/JPH0673911B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/4324—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 for making closed loops, e.g. belts
    • 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
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/242—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool the heat transfer being achieved by contact, i.e. a heated tool being brought into contact with the welding tool and afterwards withdrawn from it
    • 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
    • B29C66/03—After-treatments in the joint area
    • B29C66/034—Thermal after-treatments
    • B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
    • 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
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt 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
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/22—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns
    • B29C66/223—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns being in the form of a triangle wave or of a sawtooth wave, e.g. zigzagged
    • 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
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/22—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns
    • B29C66/229—Other specific patterns not provided for in B29C66/221 - B29C66/227
    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/324—Avoiding burr formation
    • 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
    • B29C66/70—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
    • 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
    • B29C66/739—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 material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • 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
    • B29C66/81425—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 stepped, e.g. comprising a shoulder
    • 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
    • B29C66/81431—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 comprising a single cavity, e.g. a groove
    • 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
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8324—Joining or pressing tools pivoting around one axis
    • 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
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/855—Belt splicing machines
    • 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
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/861—Hand-held tools
    • B29C66/8614—Tongs, pincers or scissors
    • 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
    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81261—Thermal properties, e.g. thermal conductivity, thermal expansion coefficient
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/709—Articles shaped in a closed loop, e.g. conveyor belts
    • B29L2031/7092—Conveyor belts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】この出願の発明は、熱可塑性樹脂
帯の端部相互の融着方法に関するものである。
【０００２】
【従来の技術】熱可塑性樹脂により構成されたコンベア
ベルトの端部相互を接合してループ状にする場合、ベル
トの端部相互を突合わせ、この突合わせ部分を金型で挟
圧すると共にこの金型を加熱し、これにより融着するよ
うにしている。上記の如くループ状のベルトを製作する
場合、従来は図１２に示すように、押圧部９０に加熱・
冷却盤４’を付設したプレス機９及び、二枚の平面板８
９で構成された金型８８を使用し、以下に示す〜に
したがって行われている。尚、上記した加熱・冷却盤
４’は、ヒータ及び冷却水通過配管を有する構成として
あり、加熱状態にする場合にはヒータをＯＮ状態にし、
又、冷却状態にする場合には冷却水通過配管に冷却水を
供給状態にするものである。 ．先ず、ベルトの端部をフィンガー状に形成する。 ．前記フィンガー状部分相互を突き合わせた状態で、
この突き合わせ部分を金型で挟み込む。 ．次に、上記したプレス機９により加熱状態（熱可塑
性樹脂の溶融温度）にした加熱・冷却盤４’を介して金
型の中央部分（接合したい部分）を挟圧する。 ．一定時間上記挟圧状態を維持したままで、加熱・冷
却盤４’を冷却状態にすると溶融していた部分が固形化
し、ベルトの両端部相互は接合状態となる。 ．その後、ベルトを金型から取り外し、バリ等を裁断
すればループ状のベルトが完成することとなる。
【０００３】しかしながら、上記プレス機９を使用する
上記方法では、一旦加熱状態にした加熱・冷却盤４’を
この状態から冷却しなければならず、又、一つのベルト
接合終了後、連続して他のベルトを接合する場合、冷却
された状態の加熱・冷却盤４’を再び加熱状態にしなけ
ればならないことから、ベルトの端部相互の接合に多く
の時間を要するという問題がある。
【０００４】尚、上記問題はベルトの端部接合に限ら
ず、熱可塑性樹脂で構成された帯状体の端部相互の接合
に際し同様に問題となる。
【０００５】
【発明が解決しようとする課題】そこで、この出願の発
明では、熱可塑性樹脂で構成された帯状体の端部相互の
融着における時間の短縮化を図り得る、熱可塑性樹脂帯
の端部相互の融着方法を提供することを課題とする。
【０００６】
【課題を解決するための手段】この出願の請求項１記載
の発明では、熱可塑性樹脂帯の端部相互の融着方法に関
し、熱可塑性樹脂帯における端部相互の突き合わせた部
分を、一対の型板により挟み込む第１工程と、クランプ
により、前記型板相互を接近させるべく前記型板の両端
を挟圧すると共にこの挟圧状態を維持させる第２工程
と、前記突き合わせ部分と対応する型板部分に熱可塑性
樹脂が溶融する程度の温度の加熱体を当接させる第３工
程と、前記第３工程から一定時間後に加熱体を型板から
外す第４工程と、第４工程後上記加熱体とは別の冷却体
を型板に当接させる第５工程とを有するものとしてい
る。
【０００７】又、上記請求項２記載の発明では、上記請
求項１記載の考案の第１工程において、雌型に形成して
ある熱可塑性樹脂帯の幅よりも僅かに大きい幅の溝の底
面と、雄型に形成してある前記溝幅よりも僅かに幅の小
さい突面とにより、熱可塑性樹脂帯を挟み込むようにし
ている。
【０００８】
【作用】この出願の発明は次の作用を有する。この発明
を採用した場合、第３工程において型板に当設させた加
熱体を第４工程において型板から外し、この状態で第５
工程において冷却体を直接型板に当設させて型板を冷却
することから、従来の技術の欄に記載したような、一
旦、高温度に加熱せしめられた加熱・冷却盤を所定の温
度まで冷却するような無駄な操作が不要となり、その結
果、第３工程と第４工程間において溶融状態にあった熱
可塑性樹脂帯の固形化は第５工程において急速に始まる
こととなる。
【０００９】又、一つのベルト接合終了後、連続して他
のベルトを接合する場合、冷却された状態の加熱・冷却
盤４を再び加熱状態にしなければならない従来の技術の
欄のものと比較するとベルトの接合すべき部分の溶融が
急速に始まることとなる。
【００１０】
【実施例】以下、この出願の発明の構成を実施例として
示した図面に従って説明する。この実施例は、この出願
の考案の方法によりケブラー繊維を埋設した熱可塑性樹
脂のコンベアベルト（幅：３０mm）をループ状に形成す
るものであり、図１に示すように、ケブラー繊維３０が
埋設されたベルト３の両端部をそれぞれフィンガー状に
成形し、図２に示す如くフィンガー状部分相互を突き合
わせてこれを融着している。
【００１１】そして、この実施例では上記のようにベル
ト３の端部相互を接合する為、図３に示すような雄型１
と雌型２とから成る金型Ｋを使用している。上記雌型２
は鉄材により構成されており、図４に示すように、その
上面に溝２０が形成してあると共にこの溝２０の幅は３
０．０mm（公差：上限＋0.02，下限−0 ）に設定してあ
る。
【００１２】雄型１はアルミニウム材により構成されて
おり、同図に示すように、その下面に突面１０が形成し
てあると共にこの突面１０の幅は３０．０mm（公差：上
限＋0,下限−0.02）に設定してある。そして、上記した
雌型２の溝２０の深さを、ベルト３の厚みの２〜３倍程
度に設定している。
【００１３】ここで、加熱盤４、冷却盤５及び図５に示
すようなハサミ状のクランプ６（作用部相互の間隔が所
望の位置で固定できるようになっている）とを使用する
と、以下に示す〜の順序でベルト３の端部相互の溶
着が行える。尚、上記加熱盤４としては内部にヒータを
有する構成としてあり、冷却盤５としては内部に冷却水
を通す構成としてある。 ．ベルト３の端部相互を図１に示す如くフィンガー状
に形成する。 ．図６に示すように、フィンガー状部分相互を突き合
わせた状態で、この突き合わせ部分を雌型２の溝２０内
に嵌入し、その後、雄型１を雌型２に組み合わせる（第
１工程）。尚、この組合せ状態では、図７に示す如く状
態となっており、雄型１と雌型２との嵌合状態はすきま
嵌めになっている。 ．次に、クランプ６により、図５に示す如く、の状
態にある金型Ｋを両端近傍を挟圧すると共に前記挟圧状
態を維持する（第２工程）。 ．そして、図８に示すように、金型Ｋにおける中央部
分（ベルト３の端部相互の突き合わせ部と対応する部
分）に上下から１８０°C 程度に昇温させた加熱盤４を
当接させる（第３工程）。
【００１４】尚、この実施例のものでは、雄型１をアル
ミニウム材（線膨張係数：23.5×10 -6）により、雌型２
を鉄材（線膨張係数：12.1×10-6）により、それぞれ構
成してあるから、上記した温度状態では図９に示す如く
雄型１の突面１０と雌型２の溝２０との嵌合状態は所謂
とまり嵌め又はしまり嵌めとなっており、雄型１と雌型
２との隙間から溶融した樹脂がはみ出ないものとなって
いる。 ．一定時間経過後、クランプ６をそのまま維持しなが
ら上記加熱盤４を金型Ｋから外し（第４工程）、図１０
に示すように、金型Ｋの中央部分に冷却盤５を上下から
当接させる（第５工程）。すると、溶融状態にあった熱
可塑性樹脂帯の固形化は急速に始まることとなる。 ．一定時間経過後、クランプ６を解きベルト３を金型
Ｋから取り外すと、図２に示すようなループ状のベルト
が完成することとなる。
【００１５】尚、上記したベルト３の金型Ｋからの取り
外し時においては、雄型１の突面１０と雌型２の溝２０
との嵌合状態はゆるみ嵌めとなっており、雄型１と雌型
２との分離は容易なものとなっている。又、雄型１と雌
型２との隙間から溶融した樹脂がはみ出ないものとなっ
ていることから、完成したベルトにおいてバリはほとん
ど発生していない。
【００１６】上記実施例に記載した方法によると、作用
・効果の欄に記載したように、溶融状態にあった熱可塑
性樹脂帯の固形化は急速に始まることから、熱可塑性樹
脂帯の端部相互の融着における所要時間は短かいものと
なる。そして、この方法によっても上記ベルト３の融着
部分において発泡化していないことが確認された。尚、
上記実施例では、この考案の方法をコンベアベルトの両
端部の接合に使用したが、これに限定されることなく、
熱可塑性の帯状体であれば接合に際して同様の効果を得
ることができる。
【００１７】又、上記実施例では、手段の欄の加熱体と
して加熱盤を使用したが、これに限定されることなく、
所謂バンドヒータを使用するようにしてもよい。この場
合、金型に前記取扱いが非常に容易なものとなる。他
方、上記実施例ではクランプ６をハサミ状のものとした
が、これに限定されることなく、図１１に示すように、
ボルト７０の締め込みによって雄型１を雌型２に押しつ
ける形式のクランプ６を採用してもよく、又、その他公
知のクランプを採用してもよい。
【００１８】
【発明の効果】この出願の発明は、上述の如くの構成を
有するものであるから、次の効果を有する。このもので
は、作用の欄に記載したように、溶融状態にあった熱可
塑性樹脂帯の固形化は急速に始まることとなるから、熱
可塑性樹脂帯の端部相互の融着における時間の短縮化を
図ることができることとなる。即ち、熱可塑性樹脂で構
成された帯状体の端部相互の融着における時間の短縮化
を図り得る、熱可塑性樹脂帯の端部相互の融着方法を提
供できた。
【００１９】又、このものでは、一つのベルト接合終了
後、連続して他のベルトを接合する場合、冷却された状
態の加熱・冷却盤４を再び加熱状態にしなければならな
い従来の技術の欄のものと比較してベルトの接合すべき
部分の溶融が急速に始まることとなり、その結果、多数
の熱可塑性樹脂帯の端部相互の融着を連続的に行うに際
して時間の短縮化を図ることができることとなる。
【図面の簡単な説明】
【図１】この発明の実施例の方法により接合されるベル
ト端部の斜視図。
【図２】この発明の実施例の方法により形成されるルー
プ状のベルトの斜視図。
【図３】この発明の実施例の方法に使用される金型の斜
視図。
【図４】この発明の実施例の方法に使用されるの金型の
説明図。
【図５】この発明の実施例の方法に使用されるクランプ
と、ループ状のベルトの製造方法を示した図。
【図６】上記金型に融着すべきベルトをセットした図。
【図７】上記金型にベルトをセットした状態を示す断面
図。
【図８】上記金型の上下に加熱盤を当接させた状態を示
す図。
【図９】上記金型を樹脂溶融温度に加熱した場合の雄型
と雌型との嵌合状態を示す図。
【図１０】上記金型の上下に冷却盤を当接させた状態を
示す図。
【図１１】他の実施例の金型及びこれのクランプを示す
図。
【図１２】熱可塑性樹脂により構成されたベルト端部相
互を融着する従来の方法の説明図。
【符号の説明】
１ 雄型 ２ 雌型 ３ ベルト ４ 加熱盤 ５ 冷却盤 １０ 溝 ２０ 突面

Claims (2)

    【特許請求の範囲】
  1. 【請求項１】 熱可塑性樹脂帯における端部相互の突き
    合わせた部分を、一対の型板により挟み込む第１工程
    と、クランプにより、前記型板相互を接近させるべく前
    記型板の両端を挟圧すると共にこの挟圧状態を維持させ
    る第２工程と、前記突き合わせ部分と対応する型板部分
    に熱可塑性樹脂が溶融する程度の温度の加熱体を当接さ
    せる第３工程と、前記第３工程から一定時間後に加熱体
    を型板から外す第４工程と、第４工程後上記加熱体とは
    別の冷却体を型板に当接させる第５工程とを有する熱可
    塑性樹脂帯の端部相互の融着方法。
  2. 【請求項２】 第１工程において、雌型に形成してある
    熱可塑性樹脂帯の幅よりも僅かに大きい幅の溝の底面
    と、雄型に形成してある前記溝幅よりも僅かに幅の小さ
    い突面とにより、熱可塑性樹脂帯を挟み込むようにした
    ことを特徴とする請求項１記載の熱可塑性樹脂帯の端部
    相互の融着方法。
JP4331600A 1992-12-11 1992-12-11 熱可塑性樹脂帯の端部相互の融着方法 Expired - Lifetime JPH0673911B2 (ja)

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Publication number Priority date Publication date Assignee Title
JP3422057B2 (ja) * 1993-10-25 2003-06-30 ニプロ株式会社 熱溶融性チューブの溶着装置
JP3422061B2 (ja) * 1993-12-28 2003-06-30 ニプロ株式会社 熱溶融性チューブの溶着装置
JP2001018293A (ja) * 1999-07-09 2001-01-23 Bridgestone Corp Ｅｖａシートの接合方法
RU2458794C2 (ru) 2007-05-01 2012-08-20 Нитта Корпорейшн Способ изготовления соединяемого ремня
JP5761703B2 (ja) * 2010-06-24 2015-08-12 ニッタ株式会社 継合ベルト
JP2018171852A (ja) * 2017-03-31 2018-11-08 ニッタ株式会社 ベルト接合装置
JP2020097830A (ja) * 2018-12-17 2020-06-25 和光合成樹脂株式会社 板状体の連結治具及びそれを用いた接合方法
DE102019128328B3 (de) * 2019-10-21 2020-09-17 Forbo Siegling Gmbh Verfahren zur Verbindung von Bandenden

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