JPH10323903A - Method for thermally welding sealed resin case and molding molded from thermoplastic resin to be used in the method - Google Patents

Method for thermally welding sealed resin case and molding molded from thermoplastic resin to be used in the method

Info

Publication number
JPH10323903A
JPH10323903A JP9136627A JP13662797A JPH10323903A JP H10323903 A JPH10323903 A JP H10323903A JP 9136627 A JP9136627 A JP 9136627A JP 13662797 A JP13662797 A JP 13662797A JP H10323903 A JPH10323903 A JP H10323903A
Authority
JP
Japan
Prior art keywords
resistance heating
heating element
welding
heat
thermoplastic resin
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.)
Granted
Application number
JP9136627A
Other languages
Japanese (ja)
Other versions
JP3053786B2 (en
Inventor
Masahiro Tanaka
昌浩 田中
Hideaki Sakuma
英明 佐久間
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.)
Tohoku Munekata Co Ltd
Original Assignee
Tohoku Munekata Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tohoku Munekata Co Ltd filed Critical Tohoku Munekata Co Ltd
Priority to JP9136627A priority Critical patent/JP3053786B2/en
Publication of JPH10323903A publication Critical patent/JPH10323903A/en
Application granted granted Critical
Publication of JP3053786B2 publication Critical patent/JP3053786B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B29C65/3432—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding comprising several wires, e.g. in the form of several independent windings
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3468—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings
    • 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
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • 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
    • 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
    • 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
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • B29C66/2424—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain
    • B29C66/24243—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral
    • B29C66/24244—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral forming a rectangle
    • 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
    • B29C66/345—Progressively making the joint, e.g. starting from the middle
    • B29C66/3452—Making complete joints by combining partial 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
    • 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
    • B29C66/814—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
    • B29C66/83—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
    • B29C66/8322—Joining or pressing tools reciprocating along 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/004—Closing perforations or small holes, e.g. using additional moulding material
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • 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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/137—Beaded-edge joints or bead seals
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7146—Battery-cases

Abstract

PROBLEM TO BE SOLVED: To enhance sealability of a welded part and to reduce a manufacturing cost of a resistance heating element in a method for thermally welding a resin case and a molding molded by thermoplastic resin to be used for the method. SOLUTION: Resistance heating elements 40, 40' are substantially bisected, and sandwiched between welded surfaces 21 of a case body 20 and a cover 30. A voltage applying terminal is brought into contact with adjacent parts of both the ends of the bisected heating elements 40, 40 via guide holes 33 simultaneously, and hence the surfaces 21 are welded. The holes 33 are eventually melted by a welding tip, collapsed and blocked.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、熱可塑性樹脂で成
形された成形品、例えば、電解液を用いた蓄電池の様に
液体を収納するケースや気密を必要とするケースなどを
生産する場合、ケース本体とカバーとの接合面に抵抗発
熱体を挟み込み、この抵抗発熱体に電圧を印加して発熱
させることにより、接合面の樹脂を溶融して溶着させる
方法及びこの方法で熱溶着される成形品に関する。The present invention relates to a molded article formed of a thermoplastic resin, such as a case for storing a liquid such as a storage battery using an electrolytic solution or a case requiring airtightness. A method in which a resistance heating element is sandwiched between the joining surface of the case body and the cover, and a voltage is applied to the resistance heating element to generate heat, thereby melting and welding the resin on the joining surface, and a molding that is thermally welded by this method. About goods.

【０００２】[0002]

【従来の技術】熱可塑性樹脂で成形されたケース本体と
カバーを接合する場合、ケース本体とカバーの間に、電
気抵抗に基づく発熱体（以下「抵抗発熱体」と称す）を
挟み込み、この抵抗発熱体に電圧を印加して発熱させ、
その熱でケース本体の接合面とカバーの接合面の樹脂を
溶融させて相互を溶着させる方法がある。2. Description of the Related Art When joining a case body and a cover formed of a thermoplastic resin, a heating element based on electric resistance (hereinafter referred to as a "resistance heating element") is sandwiched between the case body and the cover. Apply voltage to the heating element to generate heat,
There is a method in which the resin on the joint surface of the case body and the resin on the joint surface of the cover are melted by the heat to fuse them together.

【０００３】この方法は、接着剤を用いる方法や超音
波、高周波電磁誘導を用いる方法に比べて短時間で接合
でき、又、少ない設備投資で実施可能な優れた方法であ
る。例えば、接着剤を用いる方法の場合には、固定する
までに時間がかかると共に、接着剤が接合面から漏れ出
して汚れの原因となる。また、超音波や高周波電磁誘導
を用いる場合には、例えば内部に電子回路を内蔵してい
る場合、電子部品に影響を与える心配や、大がかりな設
備を必要とし、そのため多くの費用が必要になる等の欠
点がある。しかし、抵抗発熱体を用いる熱溶着方法は、
抵抗発熱体に瞬間的な電圧印加時間でよく、短時間で溶
着でき、又、設備的にも安価な費用で整えることができ
る。This method is an excellent method that can be joined in a shorter time than a method using an adhesive or a method using ultrasonic waves or high-frequency electromagnetic induction, and can be implemented with a small capital investment. For example, in the case of a method using an adhesive, it takes time to fix the adhesive, and the adhesive leaks out from the joint surface to cause contamination. In addition, when using ultrasonic waves or high-frequency electromagnetic induction, for example, when an electronic circuit is built in, there is a concern that the electronic components will be affected, and large-scale facilities are required, and therefore a large amount of cost is required. And the like. However, the thermal welding method using a resistance heating element is
An instantaneous voltage application time can be applied to the resistance heating element, the welding can be performed in a short time, and the equipment can be prepared at low cost.

【０００４】[0004]

【発明が解決しようとする課題】このように、抵抗発熱
体を用いる溶着方法は優れた方法ではあるが、樹脂ケー
スの形状において、抵抗発熱体がワイヤーの様な線形状
の場合、図１３におけるＡ、Ｂの様に、ケース１には通
電用の引出し部２が必要になり、又、引出し部２におけ
るワイヤー３は接触しないようにワイヤー３の端末部間
に間隔をあける必要がある。したがって、従来例におい
ては、抵抗発熱体を用いて溶着しても端末部間の間隔位
置に未溶着部が存在し、ケースの内部に液体を充填して
いる場合は、ここが液漏れになったり、気密性を必要と
する場合は、空気漏れなどの原因になる。As described above, the welding method using the resistance heating element is an excellent method. However, when the resistance heating element has a linear shape like a wire in the shape of the resin case, the welding method shown in FIG. As in A and B, the case 1 requires a drawer 2 for energization, and it is necessary to provide an interval between the ends of the wires 3 so that the wires 3 in the drawer 2 do not come into contact with each other. Therefore, in the conventional example, even if welding is performed using a resistance heating element, if there is an unwelded portion at the interval between the terminal portions and the inside of the case is filled with liquid, this will result in liquid leakage. If air tightness is required, air leakage may occur.

【０００５】また、抵抗発熱体を板金から打ち抜いてリ
ング状に形成し、その均等分する箇所に電圧を印加して
リング状の抵抗発熱体を発熱させる溶着方法を用いれ
ば、引出し部が必要なくなり、完全なるシールが可能で
あるが、定尺板金から打ち抜いて抵抗発熱体を得る方法
にあっては、取り数が少なく、廃棄する面積の方が多く
なって経済的でない。[0005] Further, if a resistance heating element is punched out of a sheet metal to form a ring shape, and a welding method of applying a voltage to equally divided portions to generate heat in the ring-shaped resistance heating element is used, the drawer portion is not required. Although a complete seal is possible, the method of obtaining a resistance heating element by punching from a fixed-size sheet metal is not economical because the number of pieces to be taken is small and the area to be discarded is large.

【０００６】本発明の目的の第１は、熱可塑性樹脂で成
形された樹脂製ケースにおいて、ケース本体とカバーの
溶着部に、未溶着部分を残さないようにすることであ
る。更に第２の目的は、安価な抵抗発熱体を提供するこ
とである。更に第３の目的は、抵抗発熱体に対して簡単
に電圧を印加したり、この印加部分を閉塞できるように
することである。A first object of the present invention is to prevent a non-welded portion from remaining in a welded portion between a case body and a cover in a resin case molded from a thermoplastic resin. A second object is to provide an inexpensive resistance heating element. A third object is to easily apply a voltage to a resistance heating element or to close a portion to which the voltage is applied.

【０００７】[0007]

【課題を解決するための手段】上記目的を達成するため
に提案する本発明に係る密封された樹脂製ケースの熱溶
着方法及びその方法に用いる熱可塑性樹脂で成形された
成形品は、次のとおりである。Means for Solving the Problems A method for heat-sealing a sealed resin case according to the present invention proposed to achieve the above object and a molded article molded from a thermoplastic resin used in the method are as follows. It is as follows.

【０００８】１．熱可塑性樹脂で成形された成形品を熱
溶着する時、その接合面に抵抗発熱体を挟み込み、適宜
な力で加圧しながら、前記抵抗発熱体に電圧を印加して
発熱させることにより、成形品を溶着する方法におい
て、線条の抵抗発熱体を用い、且つ、成形品の溶着面全
周を均等分割した形状から成る複数の前記抵抗発熱体で
取り囲み、溶着を行う場合、前記複数の抵抗発熱体が、
互いに隣接する両端部において、各々同時に電圧を印加
し、その発熱で接合面全周を溶着する熱可塑性樹脂で成
形された成形品の熱溶着方法。[0008] 1. When a molded article molded from a thermoplastic resin is heat-welded, a resistance heating element is sandwiched between its joint surfaces, and while applying an appropriate force, a voltage is applied to the resistance heating element to generate heat. In the method of welding, in the case where a linear resistance heating element is used, and the entire circumference of the welding surface of the molded article is surrounded by a plurality of resistance heating elements having a shape equally divided, and the welding is performed, the plurality of resistance heating elements are used. Body is,
A method for heat-welding a molded article formed of a thermoplastic resin in which a voltage is simultaneously applied to both ends adjacent to each other and the entire surface of the joint is welded by the heat generated.

【０００９】２．前記１記載の熱溶着方法において、線
条の抵抗発熱体の両端部が軸方向に対し直角方向に折り
曲げられて形成された抵抗発熱体を用いる熱可塑性樹脂
で成形された成形品の熱溶着方法。[0009] 2. 2. The method for heat-welding a molded article formed of a thermoplastic resin using a resistance heating element formed by bending both ends of a linear resistance heating element in a direction perpendicular to an axial direction in the thermal welding method according to the above item 1. .

【００１０】３．前記１記載の熱溶着方法において、抵
抗発熱体に電圧を印加する電圧印加端子の先端面形状
が、該抵抗発熱体が収まる凹部を形成して成る電圧印加
端子を用いる熱可塑性樹脂で成形された成形品の熱溶着
方法。[0010] 3. 2. In the heat welding method according to the above 1, the tip surface shape of a voltage application terminal for applying a voltage to the resistance heating element is formed of a thermoplastic resin using a voltage application terminal formed by forming a concave portion for accommodating the resistance heating element. Heat welding method for molded products.

【００１１】４．熱溶着面に抵抗発熱体を挟み込み、前
記抵抗発熱体に電圧を印加して発熱させることにより接
合面を溶融し、その後冷却して溶着結合する方法に用い
られる熱可塑性樹脂で成形された成形品において、抵抗
発熱体を均等分割し、この分割された抵抗発熱体が互い
に隣接する両端部の位置に、抵抗発熱体に到達するよう
に電圧印加端子挿入用のガイド孔を前記両端部まで貫通
させて設け、更にこのガイド孔の入口側の周辺に突出段
部を設けたことを特徴とする熱可塑性樹脂で成形された
成形品。4. A molded article formed of a thermoplastic resin used in a method of sandwiching a resistance heating element between heat-welding surfaces, applying a voltage to the resistance heating element to generate heat, melting a joining surface, and then cooling and bonding the same. In the above, the resistance heating element is equally divided, and guide holes for inserting voltage application terminals are penetrated to the ends at the positions of both ends adjacent to each other so that the resistance heating element reaches the resistance heating element. A molded article made of a thermoplastic resin, characterized in that a projection step is provided around the entrance side of the guide hole.

【００１２】[0012]

【作用】樹脂性ケースの溶着面の形状をほぼ等分化した
複数の線条の抵抗発熱体をケース本体とカバー間の溶着
面全体に挟み込んで閉じる。次にケース本体或いはカバ
ーのいずれか一方に、お互いの抵抗発熱体の端部が隣接
する位置に形成したガイド孔を介して給電装置に接続し
た電圧印加端子を挿入して隣接する抵抗発熱体に同時に
電圧を印加する。抵抗発熱体はその電気抵抗により発熱
して、周囲の樹脂を溶融する。すなわち、溶着面全周の
樹脂を溶融する。A plurality of linear resistance heating elements having substantially the same shape of the welding surface of the resin case are sandwiched between the entire welding surface between the case body and the cover and closed. Next, a voltage application terminal connected to the power supply device is inserted into one of the case body and the cover through a guide hole formed at a position where the ends of the respective resistance heating elements are adjacent to each other, and the adjacent resistance heating elements are inserted into the adjacent resistance heating elements. A voltage is applied at the same time. The resistance heating element generates heat by its electric resistance and melts the surrounding resin. That is, the resin around the entire welding surface is melted.

【００１３】十分に溶融したところで電圧印加を止め、
電圧印加端子を抜き、冷却すると、溶融した樹脂が硬化
してケース本体とカバーは全周溶着する。その後、貫通
孔の周辺に突出した段部を溶着チップで押し潰すと貫通
孔が封鎖され、密封効果の高い一体化したケースが完成
する。When the molten metal is sufficiently melted, the voltage application is stopped.
When the voltage application terminal is pulled out and cooled, the molten resin hardens and the case body and the cover are welded all around. Thereafter, when the stepped portion protruding around the through hole is crushed by the welding tip, the through hole is closed, and an integrated case having a high sealing effect is completed.

【００１４】[0014]

【発明の実施の形態】熱溶着するための熱可塑性樹脂と
しては、例えば、ＡＢＳ樹脂、アセタール樹脂、アセタ
ール共重合体、アクリル樹脂、セルロースエステル、酢
酸セルロース、塩素化ポリエーテル、エチレン−酢ビ共
重合体、ふっ素樹脂、アイオノマー、メチルペンテンポ
リマー、ナイロン（ポリアミド）、パリレン、ポリアロ
マー、ポリカーボネート、ポリエチレン、ポリエチレン
テレフタレート、ポリイミド、ポリフェニレンオキサイ
ド、ポリプロピレン、ポリスチレン、ポリスルホン、酢
酸ビニル樹脂、塩化ビニリデン樹脂、ＡＳ樹脂、スチレ
ン・ブタジエン熱可塑性樹脂、塩化ビニル樹脂などを挙
げることができる。DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the thermoplastic resin for heat welding include ABS resin, acetal resin, acetal copolymer, acrylic resin, cellulose ester, cellulose acetate, chlorinated polyether, and ethylene-vinyl acetate. Polymer, fluororesin, ionomer, methylpentene polymer, nylon (polyamide), parylene, polyallomer, polycarbonate, polyethylene, polyethylene terephthalate, polyimide, polyphenylene oxide, polypropylene, polystyrene, polysulfone, vinyl acetate resin, vinylidene chloride resin, AS resin, Styrene-butadiene thermoplastic resin, vinyl chloride resin and the like can be mentioned.

【００１５】そして、これらの熱可塑性樹脂で成形され
た製品、例えば、蓄電池ケースにあっては、ケース本体
の溶着面に抵抗発熱体を位置決めすると共にカバーとの
嵌合のガイドとなるボスを適宜な位置に配置し、ケース
本体と一体成形する。カバーには、抵抗発熱体に到達す
るように電圧印加端子挿入用のガイド孔、及びそのガイ
ド孔の入口側の周囲に突出段部を形成する。なお、前記
ボスをカバーに、前記ガイド孔及び前記突出段部はケー
ス本体に設置してもかまわない。In the case of a product molded from such a thermoplastic resin, for example, a battery case, a resistive heating element is positioned on the welding surface of the case body and a boss serving as a guide for fitting with the cover is appropriately provided. And molded integrally with the case body. The cover has a guide hole for inserting a voltage application terminal so as to reach the resistance heating element, and a projecting step around the entrance side of the guide hole. The boss may be provided on the cover, and the guide hole and the protruding step may be provided on the case body.

【００１６】抵抗発熱体としての材料は、例えばニッケ
ル−クロム合金、鉄−クロム合金、鉄−ニッケル合金及
びＳＵＳ等を用いることができ、形状としては単線のも
の、又は抵抗発熱体を数本よりあわせたものなど線条の
線材をフォーミング加工により溶着面の形状に合わせて
形成するが、抵抗発熱体を複数本用いることから、抵抗
発熱体の寸法は溶着面の周囲全長における等分割した長
さが望ましい。このようにすると、抵抗値の違いによる
抵抗発熱体相互の発熱量の差が生じない。As a material for the resistance heating element, for example, a nickel-chromium alloy, an iron-chromium alloy, an iron-nickel alloy, SUS, or the like can be used. The wire material of the striated wire is formed according to the shape of the welding surface by forming, but since multiple resistance heating elements are used, the dimensions of the resistance heating element are the equally divided lengths of the entire length around the welding surface Is desirable. In this case, there is no difference in the amount of heat generated between the resistance heating elements due to the difference in the resistance value.

【００１７】更に、抵抗発熱体の両端部は、軸方向に対
し直角方向に折り曲げられていると、各々の抵抗発熱体
を溶着面に設置した場合、折り返し部が隣接するので、
電圧印加端子を当接した時、接触面積を大きく取れる効
果がある。Furthermore, if the both ends of the resistance heating element are bent in a direction perpendicular to the axial direction, when each resistance heating element is installed on the welding surface, the folded portions are adjacent to each other.
When the voltage application terminals are brought into contact, there is an effect that a large contact area can be obtained.

【００１８】溶着工程内容としては、例えば２本の抵抗
発熱体を用いる場合、ケース本体の溶着面に２本の抵抗
発熱体をガイド役のボスに合わせて組み込み、これにカ
バーを被せてその下縁（溶着面）を前記ケース本体側の
溶着面に合わせると共に、２本の抵抗発熱体を両溶着面
に挟み込み、ケース本体とカバーを押圧する。その状態
で２箇所設けた前記ガイド孔に各々の電圧印加端子を挿
入して２つの抵抗発熱体の折り返し部（隣接部）に同時
に当接させた後、電圧を印加して抵抗発熱体を発熱させ
ると、周囲の樹脂が溶融する。２本の抵抗発熱体の両端
が隣接又は接触しているため、溶接面の全周で樹脂の溶
融を可能としている。When two resistance heating elements are used, for example, when two resistance heating elements are used, the two resistance heating elements are mounted on the welding surface of the case main body in accordance with the boss serving as a guide, and a cover is put on the cover to cover it. The edge (welding surface) is aligned with the welding surface on the case body side, and two resistance heating elements are sandwiched between both welding surfaces to press the case body and the cover. In this state, the respective voltage application terminals are inserted into the two guide holes provided so as to be simultaneously brought into contact with the folded portions (adjacent portions) of the two resistance heating elements, and then a voltage is applied to heat the resistance heating elements. Then, the surrounding resin is melted. Since both ends of the two resistance heating elements are adjacent or in contact with each other, the resin can be melted over the entire circumference of the welding surface.

【００１９】この状態の後、電圧を止め、電圧印加端子
をガイド孔から抜き取り、自然又は強制的に溶融部分を
冷却すると、溶融した樹脂は硬化する。この結果、ケー
ス本体とカバーの融合、つまり結合が行われる。After this state, when the voltage is stopped, the voltage application terminal is removed from the guide hole, and the molten portion is cooled naturally or forcibly, the molten resin is cured. As a result, the case body and the cover are fused, that is, joined.

【００２０】次に、溶着結合後、ガイド孔の周辺に突設
した突出段部に、それを加熱溶解させるための皿状の当
接面を一端部に有する溶着チップを当接し、突出段部を
加熱して溶融させ、更に押し潰すことにより、膨大部を
形成して、ガイド孔を塞ぐ。この結果、気密性の高い熱
可塑性樹脂で成形された樹脂製ケースが完成する。Next, after welding and joining, a welding tip having a dish-shaped contact surface at one end for heating and melting the projecting step is brought into contact with the projecting step projecting around the guide hole. Is heated and melted, and further crushed to form an enormous portion and close the guide hole. As a result, a resin case molded with a highly airtight thermoplastic resin is completed.

【００２１】[0021]

【実施例】図１は、本発明による密封性を持った樹脂製
ケース１０の完成斜視図である。樹脂製ケース１０はケ
ース本体２０にカバー３０を被せた形状になっている。
カバー３０上面に形成されている皿状の膨大部３１は溶
着チップ５０で突出段部３２が潰されて形成されたもの
である。FIG. 1 is a completed perspective view of a resin case 10 having a sealing property according to the present invention. The resin case 10 has a shape in which a cover 30 is put on the case body 20.
The dish-shaped enlarged portion 31 formed on the upper surface of the cover 30 is formed by crushing the projecting step portion 32 with the welding tip 50.

【００２２】図２は、樹脂製ケース１０の組み立て斜視
図である。ケース本体２０とカバー３０は熱可塑性樹脂
で成形されたプラスチック成形品であり、ケース本体２
０の溶着面２１には、抵抗発熱体４０、４０′を配置す
る時のガイド及びケース本体２０にカバー３０を被せる
ときのガイドとしてボス２２を８箇所に具備している。
２３は各抵抗発熱体４０、４０′の受電部４１を受ける
受けリブである。図中ではケース本体２０の内部底面か
ら延長して形成されているが、電圧印加端子６０を各抵
抗発熱体４０、４０′に当接した時の強度が保たれれば
皿形状の薄いものでもさしつかえない。FIG. 2 is an assembled perspective view of the resin case 10. The case body 20 and the cover 30 are plastic molded products formed of a thermoplastic resin.
The bosses 22 are provided at eight locations on the welding surface 21 as a guide for arranging the resistance heating elements 40 and 40 ′ and a guide for covering the case body 20 with the cover 30.
23 is a receiving rib for receiving the power receiving portion 41 of each of the resistance heating elements 40 and 40 '. Although it is formed to extend from the inner bottom surface of the case main body 20 in the figure, a dish-shaped thin one can be used as long as the strength when the voltage application terminal 60 is in contact with each of the resistance heating elements 40 and 40 ′ is maintained. I can't tell.

【００２３】カバー３０には前記ボス２２に対応する凹
部（図示せず）が形成されていて、この凹部に前記ボス
２２が嵌合挿入し、ケース本体２０とカバー３０の位置
合わせを容易にしている。A recess (not shown) corresponding to the boss 22 is formed in the cover 30. The boss 22 is fitted and inserted into this recess to facilitate alignment between the case body 20 and the cover 30. I have.

【００２４】図３は、本実施例に用いる電気抵抗に基づ
く抵抗発熱体４０、４０′の斜視図である。その形状は
溶着面を約２等分した形状である。抵抗発熱体４０、４
０′の形状は、各抵抗発熱体４０、４０′を配置するこ
とにより溶着面２１全周に合致した形状が望ましい。更
に、各抵抗発熱体４０、４０′の両端部は軸方向に対し
直角方向に折り曲げられてなる受電部４１が形成されて
いるが、折り曲げられている理由は後述する電圧印加端
子６０と各抵抗発熱体４０、４０′へ同時に当接する
時、確実に、又、接触面積を広く確保出来る利点があ
る。FIG. 3 is a perspective view of the resistance heating elements 40 and 40 'based on the electric resistance used in this embodiment. The shape is a shape obtained by bisecting the welding surface. Resistance heating elements 40, 4
The shape of 0 'is desirably a shape that matches the entire circumference of the welding surface 21 by disposing the resistance heating elements 40 and 40'. Further, both ends of each of the resistance heating elements 40 and 40 'are formed with a power receiving portion 41 which is bent in a direction perpendicular to the axial direction. When simultaneously contacting the heating elements 40 and 40 ', there is an advantage that a large contact area can be ensured reliably.

【００２５】図４は、ケース本体２０の溶着面２１に各
抵抗発熱体４０、４０′を配置した状態をカバー３０側
から見た平面図である。ボス２２と各抵抗発熱体４０、
４０′との位置関係が明示されている。FIG. 4 is a plan view of the state in which the resistance heating elements 40 and 40 'are arranged on the welding surface 21 of the case body 20, as viewed from the cover 30 side. The boss 22 and each resistance heating element 40,
The positional relationship with 40 'is clearly shown.

【００２６】図５は、カバー３０の上面に形成された突
出段部３２に貫通しているガイド孔３３の中を覗いた様
子で、各抵抗発熱体４０、４０′を端部である受電部４
１、４１′が並んで隣接又は接触していることを図示し
ている。以上が図１、図２、図３、図４、図５の説明で
ある。FIG. 5 is a view showing the inside of a guide hole 33 penetrating a protruding step 32 formed on the upper surface of the cover 30. Each of the resistance heating elements 40 and 40 'is a power receiving section. 4
1, 41 'are shown side by side and adjacent or in contact. The above is the description of FIGS. 1, 2, 3, 4, and 5.

【００２７】次に本発明の熱溶着方法を各図に基づいて
説明する。まず、各抵抗発熱体４０、４０′をそれぞれ
所定の位置に配置する。各抵抗発熱体４０、４０′の両
端部を設置する付近にある２本のボス２２は、その位置
関係を各抵抗発熱体４０、４０′の直径の和にほぼ等し
くしておくことにより、約直角に折り曲げられた互いの
受電部４１、４１′が隣接するのを確実にしている。そ
の後カバー３０をケース本体２０の溶着面２１に形成さ
れたボス２２をガイドとして、各抵抗発熱体４０、４
０′を挟むように被せる。Next, the heat welding method of the present invention will be described with reference to the drawings. First, the respective resistance heating elements 40 and 40 'are respectively arranged at predetermined positions. The two bosses 22 near the positions where both ends of each of the resistance heating elements 40 and 40 'are installed can be approximately equalized by making the positional relationship substantially equal to the sum of the diameters of the resistance heating elements 40 and 40'. This ensures that the power receiving portions 41, 41 'bent at right angles are adjacent to each other. Thereafter, the cover 30 is connected to the resistance heating elements 40, 4, using the boss 22 formed on the welding surface 21 of the case body 20 as a guide.
0 'is sandwiched.

【００２８】図６、図７、図８、図９、図１０、図１１
は、図４における抵抗発熱体４０、４０′の受電部Ａ−
Ａ′線部分断面図である。図６は、各抵抗発熱体４０、
４０′をケース本体２０とカバー３０で挟んだ図であ
る。カバー３０には突出段部３２が一体形成されたその
内部には貫通されたガイド孔３３が設けられている。ガ
イド孔３３の中心に各抵抗発熱体４０、４０′の受電部
４１、４１′同士の接触面が位置するようにボス２２の
位置決めがされ、受けリブ２３により受電部４１、４
１′を支えている。6, 7, 8, 9, 10, and 11
Is a power receiving section A- of the resistance heating elements 40 and 40 'in FIG.
It is an A 'line partial sectional view. FIG. 6 shows each resistance heating element 40,
FIG. 4 is a diagram in which 40 ′ is sandwiched between a case main body 20 and a cover 30. The cover 30 has a projecting step portion 32 formed integrally therewith, and a guide hole 33 penetrating therethrough is provided therein. The boss 22 is positioned so that the contact surface between the power receiving portions 41, 41 'of the resistance heating elements 40, 40' is located at the center of the guide hole 33, and the power receiving portions 41, 4 '
1 'is supported.

【００２９】次に、押圧器（図示せず）を用いて適宜な
力でカバー３０をケース本体２０に押圧しながら、図７
の様に電圧供給コントロール器（図示せず）に接続され
た電圧印加端子６０二本を各ガイド孔３３に挿入し、各
受電部４１、４１′に当接させ電圧を電圧供給コントロ
ール器から電圧印加端子６０を通して印加させると、抵
抗発熱体４０、４０′は発熱する。Next, while pressing the cover 30 against the case body 20 with an appropriate force using a pressing device (not shown), FIG.
The two voltage application terminals 60 connected to the voltage supply controller (not shown) are inserted into the respective guide holes 33 as described above, and are brought into contact with the respective power receiving portions 41 and 41 'to apply the voltage from the voltage supply controller. When the voltage is applied through the application terminal 60, the resistance heating elements 40 and 40 'generate heat.

【００３０】この発熱条件は使用した樹脂及びケースの
大きさ、そして抵抗発熱体の材質形状の要素があるた
め、あらかじめ電圧供給コントロール器にその条件を設
定しておく。The heating conditions include factors such as the size of the resin and the case used, and the material shape of the resistance heating element. Therefore, the conditions are set in the voltage supply controller in advance.

【００３１】各抵抗発熱体４０、４０′の発熱により各
抵抗発熱体４０、４０′の周囲の樹脂が溶融する。更に
各抵抗発熱体４０、４０′の両端部である受電部４１、
４１′においても互いに隣接しているため一体となった
樹脂の溶融が生じる。つまり、溶着面２１全周において
樹脂の溶融が行われケース本体２０側とカバー３０側の
溶融樹脂同士が融合する。この状態を図８に示す。そし
て、十分に融合した状態で電圧印加を止め、電圧印加端
子６０を抜き取り、冷却すると、溶融された樹脂が硬化
してケース本体２０とカバー３０は溶着し、結合する。The resin around each of the resistance heating elements 40 and 40 'is melted by the heat generated by each of the resistance heating elements 40 and 40'. Further, the power receiving units 41, which are both ends of each of the resistance heating elements 40 and 40 ',
Also at 41 ', since they are adjacent to each other, the integrated resin melts. That is, the resin is melted over the entire circumference of the welding surface 21 and the molten resins on the case body 20 side and the cover 30 side fuse together. This state is shown in FIG. Then, when the voltage application is stopped in a state of sufficient fusion, the voltage application terminal 60 is pulled out and cooled, the molten resin is cured, and the case body 20 and the cover 30 are welded and joined.

【００３２】次は、カバー３０に貫通されたガイド孔３
３を塞ぐ方法である。先ず、図９の様に突出段部３２の
先端へ当接面が皿状の形状をし、カバー３０の樹脂が溶
融する温度の昇温した溶着チップ５０を当接させる。そ
うすると、突出段部３２の樹脂が溶融し、更に、溶着チ
ップ５０にて押し潰すと溶融した突出段部３２の樹脂が
混合一体となる。その状態を図１０に示す。Next, the guide hole 3 penetrated through the cover 30
3 is a method of closing. First, as shown in FIG. 9, the contact surface is shaped like a dish and is brought into contact with the tip of the protruding step portion 32, and the welding tip 50 is heated to a temperature at which the resin of the cover 30 melts. Then, the resin of the protruding step portion 32 is melted. Further, when the resin of the protruding step portion 32 is crushed by the welding tip 50, the resin of the protruding step portion 32 is mixed and integrated. FIG. 10 shows this state.

【００３３】次に、溶着チップ５０を離し、冷却すると
図１１の様に皿状の膨大部３１が形成された結果、ガイ
ド孔３３が塞がれて密封された樹脂製ケース１０が完成
する。なお、３４は膨大部３１の形成により残された空
間である。Next, when the welding tip 50 is released and cooled, a dish-shaped bulging portion 31 is formed as shown in FIG. 11, so that the resin case 10 in which the guide hole 33 is closed and sealed is completed. Reference numeral 34 denotes a space left by the formation of the enlarged portion 31.

【００３４】本実施例では、電圧印加端子６０の先端面
形状が平面である場合を示しているが、図１２の様に抵
抗発熱体４０が収まる凹部６１を形成することにより、
電圧印加端子６０と抵抗発熱体４０の接触面積の増加を
図ることができ、より確実な溶着方法を得られる。In this embodiment, the case where the tip surface of the voltage application terminal 60 is flat is shown. However, as shown in FIG. 12, a concave portion 61 in which the resistance heating element 40 is accommodated is formed.
The contact area between the voltage application terminal 60 and the resistance heating element 40 can be increased, and a more reliable welding method can be obtained.

【００３５】溶着チップ５０は熱棒でもよいが、金属片
に電圧を印加して発熱させ樹脂を溶融後、金属片に冷媒
を吹き付けて強制冷却する構造の溶着チップを使用する
と仕上がりが良い。なお、本実施例では２つの抵抗発熱
体がほぼ同一形状であったが、各々の抵抗発熱体の電気
的抵抗値が近似的で値であれば、同一形状でなくても本
実施例と同じ効果が得られる。The welding tip 50 may be a hot rod. However, it is preferable to use a welding tip having a structure in which a voltage is applied to a metal piece to generate heat to melt the resin, and then a coolant is sprayed on the metal piece to forcibly cool the metal piece. In the present embodiment, the two resistance heating elements have substantially the same shape. However, as long as the electric resistance values of the respective resistance heating elements are approximate and values, even if they are not the same shape, they are the same as in this embodiment. The effect is obtained.

【００３６】また、膨大部３１をカバー３０の表面に突
出したくない場合は、突出段部３２周辺を膨大部３１の
高さ分段落ちさせると良い。本実施例では、ケース本体
２０側にボス、カバー３０側に突出段部３２やガイド孔
３３を設けているが、逆の設置方法でもよく、ケースの
形状、製造工程の都合などにより、任意にその位置を選
ぶことが可能である。If it is not desired to project the enlarged portion 31 from the surface of the cover 30, it is preferable to drop the periphery of the projecting step 32 by the height of the enlarged portion 31. In the present embodiment, the boss is provided on the case body 20 side, and the protruding step portion 32 and the guide hole 33 are provided on the cover 30 side. However, the installation method may be reversed. It is possible to choose its position.

【００３７】更に、本実施例では、ケース本体２０の溶
着面２１が平面であったが、線条の抵抗発熱体が組み込
みやすい様に接着面に溝を設け、更にカバー３０側から
溶着リブを前記溝に嵌合させて抵抗発熱体を挟むことも
可能である。Further, in the present embodiment, the welding surface 21 of the case body 20 is flat, but a groove is provided in the bonding surface so that the linear resistance heating element can be easily incorporated, and welding ribs are formed from the cover 30 side. It is also possible to fit the groove to sandwich the resistance heating element.

【００３８】[0038]

【発明の効果】本発明は以上のように、成形品の溶着面
を等分化した線条の抵抗発熱体を用いることにより、溶
着面全周の樹脂を溶融させ溶着することを可能とした。
さらに電圧印加端子のガイド孔を塞ぐための突出段部を
一体形成している成形品を用いることにより、溶着後突
出段部を溶融させて塞ぐことができるため、密封された
樹脂製ケースを容易に作成できる。したがって、本発明
の熱溶着方法や抵抗発熱体を用いれば次のような効果が
得られる。As described above, the present invention makes it possible to melt and weld the resin all around the welding surface by using a linear resistance heating element in which the welding surface of the molded article is equally divided.
Furthermore, by using a molded product that integrally forms a protruding step for closing the guide hole of the voltage application terminal, the protruding step can be melted and closed after welding, so that the sealed resin case can be easily manufactured. Can be created. Therefore, the following effects can be obtained by using the heat welding method and the resistance heating element of the present invention.

【００３９】ａ．抵抗発熱体が板金を打ち抜いたリング
状のものでなく、線条の抵抗発熱体をフォーミング加工
するので、材料の無駄がなく、加工費も安くて済む。 ｂ．線条の抵抗発熱体を組み合わせて溶着面全周を溶着
するので、従来のように未溶着部分が残らず、密封され
た樹脂製ケースを得られる。 ｃ．安価な溶着設備で溶着が可能である。A. Since the resistance heating element is not formed in a ring shape by punching a sheet metal, but is formed by forming a linear resistance heating element, there is no waste of material and the processing cost can be reduced. b. Since the entire circumference of the welding surface is welded by combining the linear resistance heating elements, an unwelded portion does not remain as in the related art, and a sealed resin case can be obtained. c. Welding is possible with inexpensive welding equipment.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の手法を用いた樹脂製ケースの完成斜視
図。FIG. 1 is a completed perspective view of a resin case using the method of the present invention.

【図２】樹脂製ケースにおいて、ケース本体とカバーを
熱溶着する際、本発明を実施した構造を示す説明図。FIG. 2 is an explanatory view showing a structure in which the present invention is implemented when a case body and a cover are thermally welded to each other in a resin case.

【図３】本発明の手法に用いる抵抗発熱体の斜視図。FIG. 3 is a perspective view of a resistance heating element used in the method of the present invention.

【図４】各抵抗発熱体をケース本体に組み込んだ状態を
カバー側から見たケース本体の平面図。FIG. 4 is a plan view of the case main body as viewed from a cover side in a state where each resistance heating element is incorporated in the case main body.

【図５】ガイド孔から覗いた受電部の配置図。FIG. 5 is a layout diagram of a power receiving unit viewed from a guide hole.

【図６】溶着面に各抵抗発熱体を組み込み、ケース本体
とカバーにより各抵抗発熱体を挟み込んだ受電部の断面
図。FIG. 6 is a cross-sectional view of a power receiving unit in which each resistance heating element is incorporated into a welding surface and each resistance heating element is sandwiched between a case body and a cover.

【図７】電圧印加端子を各抵抗発熱体に同時に当接させ
て樹脂を溶融させている受電部の断面図。FIG. 7 is a cross-sectional view of a power receiving unit in which a resin is melted by simultaneously contacting a voltage application terminal with each resistance heating element.

【図８】ケース本体とカバーが熱溶着により溶着結合さ
れた受電部の断面図。FIG. 8 is a cross-sectional view of a power receiving unit in which a case body and a cover are welded and bonded by thermal welding.

【図９】溶着チップを突出段部に当てて、頭部を溶着す
る受電部の断面図。FIG. 9 is a cross-sectional view of a power receiving unit for welding a head by applying a welding tip to a protruding step.

【図１０】溶着チップにて突出段部の樹脂が混合一体と
なった受電部の断面図。FIG. 10 is a cross-sectional view of the power receiving unit in which the resin of the protruding step is mixed and integrated with the welding tip.

【図１１】膨大部を形成し、ガイド孔を塞いだ様子を示
す受電部の断面図。FIG. 11 is a cross-sectional view of the power receiving unit showing a state in which a bulged portion is formed and a guide hole is closed.

【図１２】電圧印加端子の先端面に凹部を形成した受電
部の拡大断面図。FIG. 12 is an enlarged cross-sectional view of a power receiving unit in which a concave portion is formed on a tip surface of a voltage application terminal.

【図１３】従来における線条の抵抗発熱体を用いた熱溶
着方法を示す完成図と平面図。FIG. 13 is a completed view and a plan view showing a conventional heat welding method using a linear resistance heating element.

【符号の説明】[Explanation of symbols]

１０ 樹脂製ケース ２０ ケース本体 ２１ 溶着面 ３０ カバー ３１ 膨大部 ３２ 突出段部 ３３ ガイド孔 ４０、４０′ 抵抗発熱体 ４１、４１′ 受電部 ５０ 溶着チップ ６０ 電圧印加端子 DESCRIPTION OF SYMBOLS 10 Resin case 20 Case main body 21 Welding surface 30 Cover 31 Enlarged part 32 Projection step 33 Guide hole 40, 40 'Resistance heating element 41, 41' Power receiving part 50 Welding chip 60 Voltage application terminal

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 熱可塑性樹脂で成形された成形品を熱溶
着する時、その接合面に抵抗発熱体を挟み込み、適宜な
力で加圧しながら、前記抵抗発熱体に電圧を印加して発
熱させることにより、成形品を溶着する方法において、
線条の抵抗発熱体を用い、且つ、成形品の溶着面全周を
均等分割した形状から成る複数の前記抵抗発熱体で取り
囲み、溶着を行う場合、前記複数の抵抗発熱体が、互い
に隣接する両端部において、各々同時に電圧を印加し、
その発熱で接合面全周を溶着する熱可塑性樹脂で成形さ
れた成形品の熱溶着方法。When a molded article formed of a thermoplastic resin is heat-welded, a resistance heating element is sandwiched between joining surfaces thereof, and a voltage is applied to the resistance heating element to generate heat while applying an appropriate force. Thereby, in the method of welding a molded product,
In the case of using a linear resistance heating element and enclosing the entire circumference of the welding surface of the molded article with a plurality of resistance heating elements having a shape equally divided and performing welding, the plurality of resistance heating elements are adjacent to each other. At both ends, apply voltage at the same time,
A method for heat welding a molded article formed of a thermoplastic resin that welds the entire periphery of the joint surface by the heat generated. 【請求項２】 請求項１記載の熱溶着方法において、線
条の抵抗発熱体の両端部が軸方向に対し直角方向に折り
曲げられて形成された抵抗発熱体を用いる熱可塑性樹脂
で成形された成形品の熱溶着方法。2. The heat welding method according to claim 1, wherein both ends of the linear resistance heating element are formed of a thermoplastic resin using a resistance heating element formed by being bent in a direction perpendicular to an axial direction. Heat welding method for molded products. 【請求項３】 請求項１記載の熱溶着方法において、抵
抗発熱体に電圧を印加する電圧印加端子の先端面形状
が、該抵抗発熱体が収まる凹部を形成して成る電圧印加
端子を用いる熱可塑性樹脂で成形された成形品の熱溶着
方法。3. The heat welding method according to claim 1, wherein the shape of the tip surface of the voltage application terminal for applying a voltage to the resistance heating element is formed by forming a concave portion in which the resistance heating element is accommodated. A method for heat welding molded articles molded with a plastic resin. 【請求項４】 熱溶着面に抵抗発熱体を挟み込み、前記
抵抗発熱体に電圧を印加して発熱させることにより接合
面を溶融し、その後冷却して溶着結合する方法に用いら
れる熱可塑性樹脂で成形された成形品において、抵抗発
熱体を均等分割し、この分割された抵抗発熱体が互いに
隣接する両端部の位置に、抵抗発熱体に到達するように
電圧印加端子挿入用のガイド孔を前記両端部まで貫通さ
せて設け、更にこのガイド孔の入口側の周辺に突出段部
を設けたことを特徴とする熱可塑性樹脂で成形された成
形品。4. A thermoplastic resin used for a method in which a resistance heating element is sandwiched between heat-welding surfaces, a voltage is applied to the resistance heating element to generate heat, and the joining surface is melted. In the molded article, the resistance heating element is equally divided, and the divided resistance heating element is provided with a guide hole for inserting a voltage application terminal at the position of both ends adjacent to each other so as to reach the resistance heating element. A molded article formed of a thermoplastic resin, wherein the molded article is provided so as to penetrate to both end portions, and further has a protruding step portion provided around the entrance side of the guide hole.
JP9136627A 1997-05-27 1997-05-27 Heat welding method of sealed resin case Expired - Lifetime JP3053786B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9136627A JP3053786B2 (en) 1997-05-27 1997-05-27 Heat welding method of sealed resin case

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9136627A JP3053786B2 (en) 1997-05-27 1997-05-27 Heat welding method of sealed resin case

Publications (2)

Publication Number Publication Date
JPH10323903A true JPH10323903A (en) 1998-12-08
JP3053786B2 JP3053786B2 (en) 2000-06-19

Family

ID=15179736

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9136627A Expired - Lifetime JP3053786B2 (en) 1997-05-27 1997-05-27 Heat welding method of sealed resin case

Country Status (1)

Country Link
JP (1) JP3053786B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6054679A (en) * 1998-05-15 2000-04-25 Tohoku Munekata Co., Ltd. Deposition method of product molded with thermoplastic resin, and a depositing electrode to be used for this deposition method
JP2013143271A (en) * 2012-01-11 2013-07-22 Toshiba Corp Lithium ion secondary battery and battery
JP2016143572A (en) * 2015-02-03 2016-08-08 アール・ビー・コントロールズ株式会社 Lighting apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6054679A (en) * 1998-05-15 2000-04-25 Tohoku Munekata Co., Ltd. Deposition method of product molded with thermoplastic resin, and a depositing electrode to be used for this deposition method
JP2013143271A (en) * 2012-01-11 2013-07-22 Toshiba Corp Lithium ion secondary battery and battery
JP2016143572A (en) * 2015-02-03 2016-08-08 アール・ビー・コントロールズ株式会社 Lighting apparatus

Also Published As

Publication number Publication date
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