JPH0716945A - Method and mold for molding hollow product - Google Patents

Method and mold for molding hollow product

Info

Publication number
JPH0716945A
JPH0716945A JP5183466A JP18346693A JPH0716945A JP H0716945 A JPH0716945 A JP H0716945A JP 5183466 A JP5183466 A JP 5183466A JP 18346693 A JP18346693 A JP 18346693A JP H0716945 A JPH0716945 A JP H0716945A
Authority
JP
Japan
Prior art keywords
semi
mold
hollow body
molding
hollow
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
JP5183466A
Other languages
Japanese (ja)
Other versions
JP2729900B2 (en
Inventor
Shozo Nishida
正三 西田
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.)
Japan Steel Works Ltd
Original Assignee
Japan Steel Works 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 Japan Steel Works Ltd filed Critical Japan Steel Works Ltd
Priority to JP5183466A priority Critical patent/JP2729900B2/en
Publication of JPH0716945A publication Critical patent/JPH0716945A/en
Application granted granted Critical
Publication of JP2729900B2 publication Critical patent/JP2729900B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/006—Joining parts moulded in separate cavities
    • 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
    • B29C65/022—Particular heating or welding methods not otherwise provided for
    • B29C65/028—Particular heating or welding methods not otherwise provided for making use of inherent heat, i.e. the heat for the joining comes from the moulding process of one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • B29C65/103—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined direct heating both surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • 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
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
    • 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
    • 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
    • B29C66/81427—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 ridge, e.g. for making a weakening line; comprising a single tooth
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool 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
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/006—Joining parts moulded in separate cavities
    • B29C2045/0063—Joining parts moulded in separate cavities facing before assembling, i.e. bringing the parts opposite to each other before assembling
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/006—Joining parts moulded in separate cavities
    • B29C2045/0074—Joining parts moulded in separate cavities inserting a heating tool inside the mould
    • 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
    • B29C66/81422—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 convex
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To provide a hollow product molding method sufficiently increasing the strength of the bonded part of half hollow products and not generating the problem of injection complicating a molding process, the problem of the selection of a resin and the problem of the deformation of the bonded part at the time of secondary molding. CONSTITUTION:In primary molding, a slide mold 1 and a movable mold 10 are used to integrally mold first and second half hollow members A, B so as to provide bonding parts Sa, Sb. In secondary molding, the slide mold 1 is slid upwardly with respect to the movable mold 10 to superpose one half hollow member B among the first and second half hollow members A, B subjected to the primary molding on the other half hollow member A so that the respective bonding parts Sa, Sb are opposed mutually and the inner surfaces of the bonding parts Sa, Sb of the superposed first and second half hollow members A, B are heated by heaters H, H or hot air to be partially melted. Them, the bonding parts Sa, Sb are pressed and welded to obtain a hollow product consisting of a pair of the first and second half hollow bodies A, B.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、１次成形で一対の第
１、２半中空体を成形し、そして１次成形で成形された
第１、２の半中空体の接合部を２次成形で接合して中空
体製品を製造する、中空体製品の成形方法およびこの成
形方法の実施に使用される金型に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention molds a pair of first and second semi-hollow bodies by primary molding, and secondarily joins the joints of the first and second semi-hollow bodies molded by primary molding. The present invention relates to a method for molding a hollow body product, which is joined by molding to produce a hollow body product, and a mold used for carrying out this molding method.

【０００２】[0002]

【従来の技術】ポリタンク、ブレーキ液タンク、スプレ
ータンク、ブイ等の合成樹脂性の中空体製品の製造方法
としては、射出成形機による成形法が知られている。射
出成形機により中空体製品を製造する場合は、１次形成
において中空体製品を二つ割の半中空体あるいは分割体
として形成し、２次形成においてその分割面を突き合わ
せ、そして突き合わせた部分を加熱あるいは溶着して１
個の中空体製品を製造している。この射出成形機を用い
た成形法によると、完全に密封された中空体製品を作る
ことができると共に、均一な肉厚の中空体製品を作るこ
ともでき、また複雑な形状にも対処できる等の利点もあ
るが、本出願人は特公平２ー３８３７７号により、上記
成形方法をさらに改良して量産に適した中空体製品の成
形方法を提供した。2. Description of the Related Art A molding method using an injection molding machine is known as a method of manufacturing a synthetic resin hollow body product such as a plastic tank, a brake fluid tank, a spray tank, and a buoy. When a hollow body product is manufactured by an injection molding machine, the hollow body product is formed as a half-hollow body or a divided body in the primary formation, the divided surfaces are abutted in the secondary formation, and the abutted portions are 1 by heating or welding
Manufactures individual hollow body products. According to the molding method using this injection molding machine, it is possible to make a completely sealed hollow body product, a hollow body product having a uniform wall thickness, and to deal with complicated shapes. However, the applicant of the present invention has further improved the above-mentioned molding method and provided a molding method of a hollow body product suitable for mass production, according to Japanese Patent Publication No. 2-38377.

【０００３】この方法の実施には、一組の金型が使用さ
れる。その一方の金型には１方の半中空体を形成するた
めの雄型と雌型とが設けられ、そして他方の金型には、
他方の半中空体を形成するための雌型と雄型とが設けら
れている。１次成形において、この１組の金型を使用し
て一対の半中空体を形成し、そして２次成形において、
一方の金型を他方の金型に対してスライドさせて半中空
体の接合面を突き合わせた後、突き合わせ面の周縁に溶
融樹脂を射出して一体化して中空体製品を得るようにな
っている。また、１次形成において中空体製品を二つ割
の半中空体として形成し、２次形成においてその分割面
を突き合わせ、そして突き合わせた部分を加熱溶着して
１個の中空体製品を得る製造方法も知られている。A set of molds is used to carry out this method. One mold is provided with a male mold and a female mold for forming one semi-hollow body, and the other mold is
A female mold and a male mold for forming the other semi-hollow body are provided. In the primary molding, the pair of molds is used to form a pair of semi-hollow bodies, and in the secondary molding,
After sliding one metal mold with respect to the other metal mold and abutting the joint surfaces of the semi-hollow bodies, a molten resin is injected to the periphery of the abutting surfaces to be integrated to obtain a hollow body product. . In addition, a manufacturing method for forming one hollow body product by forming the hollow body product as a half-hollow body in the primary formation, abutting the divided surfaces in the secondary formation, and heat welding the abutted portions. Is also known.

【０００４】[0004]

【発明が解決しようとする課題】上記方法によると、２
次成形において、一方の金型を他方の金型に対してスラ
イドさせて一対の半中空体を突き合わせ、そして溶融樹
脂を射出することにより、中空体製品を得ることができ
るので、各工程が自動化でき中空体製品を量産できると
いう利点がある。また一対の半中空体が射出形成により
成形されるので、複雑な形状の中空体製品も成形できる
等の特徴も有する。このように、数々の利点を有する
が、２次成形時に溶融樹脂を新たに射出しなければなら
ないので、成形工程が複雑になることがある。また２次
成形時に射出する溶融樹脂の馴染みが悪いという問題も
ある。樹脂の馴染みの問題は、２次成形時に半中空体と
同じ樹脂を射出することによりある程度解決できるが、
１次成形で成形された半中空体は、冷たくなっており、
冷たくなった半中空体の接合部に溶融樹脂を射出して
も、射出圧の大きさ如何によっては融着部の強度が得ら
れないことがある。さらには２次成形時に同じ樹脂を射
出するようにすると、樹脂の選択に融通がきかなくな
る。According to the above method, 2
In the subsequent molding, one mold can be slid with respect to the other mold to abut a pair of semi-hollow bodies, and a molten resin can be injected to obtain hollow body products. It is possible to mass-produce hollow body products. Further, since the pair of semi-hollow bodies are molded by injection molding, the hollow body product having a complicated shape can be molded. As described above, although it has various advantages, the molding process may be complicated because the molten resin must be newly injected during the secondary molding. Further, there is also a problem that the molten resin injected during the secondary molding is unsuitable. The problem of resin familiarity can be solved to some extent by injecting the same resin as the semi-hollow body during secondary molding,
The semi-hollow body molded by primary molding is cold,
Even if the molten resin is injected into the cooled joint portion of the semi-hollow body, the strength of the fusion-bonded portion may not be obtained depending on the magnitude of the injection pressure. Furthermore, if the same resin is injected during the secondary molding, the choice of resin becomes inflexible.

【０００５】また、後者の加熱溶着方法によると、上記
のような問題点は解決される。しかしながら、接合面が
溶融する程度に加熱しなければならないので、接合に直
接関係の無い接合部の外表面が変形を起こすことがあ
る。また接合される部分すなわち接合面以外の部分から
加熱されるので、溶融に時間がかかると共に、消費され
る熱エネルギも大きくなる。本発明は、上記したような
問題点を改良すべく提案されたものであって、具体的に
は２次形成で成形された中空体製品の接合部の強度は充
分大きく、しかも２次成形時に成形工程が複雑になる射
出の問題、樹脂の選択の問題等がなく、さらには接合部
の変形の問題もない、中空体製品の成形方法およびその
方法の実施に使用される金型を提供することを目的とし
ている。The latter heat welding method can solve the above problems. However, since the joint surface must be heated to such an extent that it melts, the outer surface of the joint, which is not directly related to the joint, may be deformed. Further, since the portion to be joined, that is, the portion other than the joined surface is heated, it takes time to melt and the consumed heat energy becomes large. The present invention has been proposed to improve the above-mentioned problems. Specifically, the strength of the joint portion of the hollow body product formed by the secondary forming is sufficiently high, and at the time of the secondary forming. (EN) Provided are a method for molding a hollow body product and a mold used for carrying out the method, which does not have the problem of injection that complicates the molding process, the problem of resin selection, and the problem of deformation of the joint. Is intended.

【０００６】[0006]

【課題を解決するための手段】請求項１記載の発明は、
上記目的を達成するために、１次成形において、移動金
型と可動金型とを使用して第１、２半中空体を接合部を
有するように一体的に成形しそして２次成形において、
前記移動金型を可動金型に対して移動させて１次成形で
成形された第１、２半中空体の一方の半中空体を他方の
半中空体に、それぞれの接合部が対向するように重ね、
そして重ねられた第１、２半中空体の接合部の内面側を
加熱して、接合部を加圧溶着して第１、２半中空体から
中空体製品を得るように構成される。請求項２記載に発
明は、請求項１記載の第１、２半中空体の接合部の内面
側を加熱するとき、加圧溶着時に接合部に埋められる電
熱コイル、抵抗ヒータ等の電気発熱体で加熱し、請求項
３記載の発明は、第１、２半中空体の接合部の内面側を
加熱するとき、熱風で加熱するように構成される。請求
項４記載の発明は、１次成形において、移動金型と可動
金型とを使用して第１、２半中空体を、それぞれの接合
部が他の部分より肉厚になるように一体的に成形し、そ
して２次成形において、１次成形で成形された第１、２
半中空体の肉厚の接合部が固化する前に、前記移動金型
を可動金型に対して移動させて１次成形で成形された第
１、２半中空体の一方の半中空体を他方の半中空体に、
それぞれの接合部が対向するように重ね、そして重ねら
れた第１、２半中空体の接合部を加圧溶着して第１、２
半中空体から中空体製品を得るように構成される。そし
て金型に関する請求項５記載に発明は、移動金型と可動
金型とを備え、これらの金型の一方の金型には、第１コ
アと第２凹部とが所定の間隔をおいて、そして他方の金
型には、第１凹部と第２コアとが所定の間隔をおいてそ
れぞれ設けられ、前記第１凹部と第２凹部との開口部の
周囲には、リング状に段部がそれぞれ形成され、前記金
型が型締めされると、前記第１コアと第１凹部とにより
第１キャビティが、また前記第２凹部と第２コアとによ
り第２キャビティがそれぞれ形成されると共に、前記金
型の少なくとも一方の金型には、前記段部に出没する押
部材が設けられ、請求項６記載の発明は、請求項５記載
の第１コアと第２コアの周りには、段部側に突出した突
起が設けられる。The invention according to claim 1 is
To achieve the above object, in the primary molding, the first and second semi-hollow bodies are integrally molded with a joint using a movable mold and a movable mold, and in the secondary molding,
The movable mold is moved relative to the movable mold so that one of the first and second semi-hollow bodies molded by the primary molding is opposed to the other of the semi-hollow bodies so that the respective joint portions face each other. Over,
Then, the inner surface side of the joint portion of the first and second semi-hollow bodies that are stacked is heated, and the joint portion is pressure-welded to obtain a hollow body product from the first and second semi-hollow bodies. According to a second aspect of the present invention, when heating the inner surface side of the joint portion of the first and second semi-hollow bodies according to the first aspect, an electric heating element such as an electric heating coil or a resistance heater that is buried in the joint portion during pressure welding. In the invention according to claim 3, when heating the inner surface side of the joint portion of the first and second semi-hollow bodies, it is constituted by heating with hot air. According to a fourth aspect of the present invention, in the first molding, the first and second semi-hollow bodies are integrally formed by using a movable mold and a movable mold so that respective joints are thicker than other parts. First, and in the secondary molding, the first and second molded in the primary molding.
Before the thick joint portion of the semi-hollow body is solidified, the moving die is moved with respect to the movable die so that one of the first and second semi-hollow bodies formed by primary molding is In the other semi-hollow body,
The joining portions of the first and second semi-hollow bodies are overlapped with each other so that the respective joining portions face each other, and the first and second joining is performed by pressure welding.
It is configured to obtain a hollow body product from a semi-hollow body. The invention according to claim 5 relating to a mold comprises a movable mold and a movable mold, and one mold of these molds has a first core and a second recess at a predetermined interval. The other mold is provided with a first recess and a second core at predetermined intervals, and a ring-shaped step is formed around the opening of the first recess and the second recess. When the mold is clamped, the first core and the first recess form a first cavity, and the second recess and the second core form a second cavity. , At least one of the molds is provided with a pressing member protruding and retracting in the step portion, and the invention according to claim 6 has the first core and the second core according to claim 5, A protrusion protruding to the step side is provided.

【０００７】[0007]

【作用】例えば可動金型を移動金型に対して型締めす
る。そうすると、第１コアと第１凹部とにより第１キャ
ビティが、また第２凹部と第２コアとにより第２キャビ
ティがそれぞれ形成されるので、これらのキャビティに
溶融樹脂を充填する。このとき段部にも充填される。こ
れにより第１、２半中空体が接合部と一体的に成形され
る。可動金型を開く。そうして移動金型を、第２半中空
体が保持されている状態で例えばスライドさせる。この
とき、第２半中空体の接合部が、第１半中空体の接合部
に整合する位置までスライドさせる。第１、２半中空体
の接合部を突き合わせ、その内側を加熱して溶融する。
例えばヒータ線を接合部の内側に夾んでヒータ線に通電
して、第１、２半中空体の接合部の内側を加熱し、一部
溶融する。そうして押部材で第１半中空体の接合部を押
して接合部を接合する。再度型を開いて製品を取り出
す。Function: For example, the movable mold is clamped to the movable mold. Then, a first cavity is formed by the first core and the first recess, and a second cavity is formed by the second recess and the second core. These cavities are filled with the molten resin. At this time, the step is also filled. As a result, the first and second semi-hollow bodies are integrally molded with the joint. Open the movable mold. Then, the moving mold is slid, for example, while the second semi-hollow body is held. At this time, the joint portion of the second semi-hollow body is slid to a position aligned with the joint portion of the first semi-hollow body. The joining portions of the first and second semi-hollow bodies are abutted against each other, and the inside thereof is heated and melted.
For example, the heater wire is encased inside the joint to energize the heater wire, and the inside of the joint of the first and second semi-hollow bodies is heated and partially melted. Then, the pushing member pushes the joining portion of the first semi-hollow body to join the joining portion. Open the mold again and take out the product.

【０００８】あるいは、第１、２半中空体の少なくとも
接合部が固化する前に、可動金型を開き、移動金型を、
第２半中空体が保持されている状態で例えばスライドさ
せ、第１半中空体の接合部に整合させる。そうして第
１、２半中空体の接合部を押部材で押して接合部を溶着
接合する。Alternatively, the movable mold is opened and the movable mold is opened before at least the joint portion of the first and second semi-hollow bodies is solidified.
While the second semi-hollow body is held, the second semi-hollow body is slid, for example, to be aligned with the joint portion of the first semi-hollow body. Then, the joining portions of the first and second semi-hollow bodies are pushed by the pressing member to weld and join the joining portions.

【０００９】請求項６記載の発明の金型は、次のように
作用する。すなわち第１コアと第２コアの周りには、段
部側に突出した突起が設けられているので、第１、２半
中空体の接合部の内側には複数個の断面が半円状の凹溝
が成形される。可動金型を開き、スライド金型をスライ
ドさせる。このとき、第２半中空体の接合部が、第１半
中空体の接合部に整合する位置までスライドさせる。そ
うして軽く型締めする。そうすると、第１半中空体の接
合部の凹溝と、第２半中空体の接合部の凹溝とが整合
し、断面が円形のリング状の通路が、接合部の内側に形
成される。そこで通路に所定温度に加熱されている熱風
を循環させる。そうすると、第１、２半中空体の接合部
の内側が通路の周りから一部溶融する。そこで熱風の供
給を停止し、押部材で第１半中空体の接合部を押す。こ
れにより通路が潰れて接合部が接合される。可動金型を
開いて製品を取り出す。The mold of the invention according to claim 6 operates as follows. That is, since the protrusion protruding toward the step is provided around the first core and the second core, a plurality of semicircular cross sections are formed inside the joint of the first and second semi-hollow bodies. The groove is formed. Open the movable mold and slide the slide mold. At this time, the joint portion of the second semi-hollow body is slid to a position aligned with the joint portion of the first semi-hollow body. Then lightly clamp the mold. Then, the concave groove of the joint portion of the first semi-hollow body and the concave groove of the joint portion of the second semi-hollow body are aligned, and a ring-shaped passage having a circular cross section is formed inside the joint portion. Therefore, hot air heated to a predetermined temperature is circulated in the passage. Then, the inside of the joint portion of the first and second semi-hollow bodies is partially melted from around the passage. Then, the supply of hot air is stopped and the joining member of the first semi-hollow body is pushed by the pushing member. As a result, the passage is crushed and the joint is joined. Open the movable mold and take out the product.

【００１０】[0010]

【実施例】最初に金型の第１実施例について説明する。
金型は、固定金型、スライド金型１、可動金型１０等か
ら構成されているが、図１にはスライド金型１と、この
スライド金型１と対をなす可動金型１０とが示されてい
る。スライド金型１は、本実施例では可動金型１０に対
して上下方向にスライド的に駆動され、可動金型１０は
スライド金型１に対して型締めされる。EXAMPLE First, a first example of the mold will be described.
The mold is composed of a fixed mold, a slide mold 1, a movable mold 10 and the like. In FIG. 1, the slide mold 1 and the movable mold 10 paired with the slide mold 1 are shown. It is shown. In this embodiment, the slide mold 1 is slidably driven in the vertical direction with respect to the movable mold 10, and the movable mold 10 is clamped to the slide mold 1.

【００１１】スライド金型１の図においてスライド金型
１の上方には、パーティングラインから突出した半球形
の第１コア２が設けられている。この第１コア２は、後
述する可動金型１０の第１凹部１２と協働して、第１キ
ャビティ１４を形成し、この第１キャビティ１４により
中空体製品Ｓの一方の第１半中空体Ａが成形される。第
１コア２の下方には、第１コア２と所定の間隔をおいて
第２凹部３が設けられている。この第２凹部３は、可動
金型１０の第２コア１２と協働して第２キャビティ４を
形成する。この第２キャビティ４により空体製品Ｓの他
方の第２半中空体Ｂが成形される。In the drawing of the slide mold 1, a hemispherical first core 2 protruding from the parting line is provided above the slide mold 1. The first core 2 cooperates with a first recess 12 of a movable mold 10 described later to form a first cavity 14, and the first cavity 14 allows the first semi-hollow body of one of the hollow body products S to be formed. A is molded. Below the first core 2, a second recess 3 is provided at a predetermined distance from the first core 2. The second recess 3 cooperates with the second core 12 of the movable mold 10 to form the second cavity 4. The second cavity 4 molds the other second semi-hollow body B of the empty product S.

【００１２】スライド金型１の第２凹部３の開口部の周
囲には、リング状に切り落とされた所定深さの段部５が
設けられている。段部５は、第２凹部３と連通している
ので、この段部５により第２半中空体Ｂと接合部Ｓｂと
が一体的に成形される。段部５に対向して、スライド金
型１には、複数本のエジェクタピンあるいは押部材６、
６、…が設けられている。押部材６、６、…は、図には
示されていないが押し板等により駆動され、その先端部
が段部５の底面と同じ面になる位置と、外方に突き出た
位置とを取る。したがって、押部材６、６、…は、２次
形成によって得られる中空体製品Ｓを押し出すエジェク
タの作用を奏すると共に、２次形成時に第２半中空体Ｂ
の接合部を押す押圧作用を奏することもできる。押部材
６、６、…が押圧作用を奏するときは、接合部を複数個
の点で押圧することになるので、押部材６、６、…の先
端部にリング状の部材を設けて線あるいは面で押圧する
ように実施することもできるが、図には示されていな
い。なお、スライド金型１の略中央部には、３〜６度程
度の勾配を持ったスプルー７が設けられ、射出機のノズ
ルから射出される樹脂はこのスプルー７を通して第２キ
ャビティ４、第１キャビティ１４等に充填される。Around the opening of the second recess 3 of the slide mold 1, there is provided a ring-shaped step 5 having a predetermined depth. Since the step 5 communicates with the second recess 3, the step 5 forms the second semi-hollow body B and the joint Sb integrally. A plurality of ejector pins or push members 6 are provided on the slide mold 1 so as to face the step portion 5.
6 are provided. Although not shown in the figure, the pushing members 6, 6, ... Are driven by a pushing plate or the like, and take a position where the tip end is flush with the bottom surface of the stepped portion 5 and a position protruding outward. . Therefore, the pressing members 6, 6, ... Have the function of an ejector for pushing out the hollow body product S obtained by the secondary formation, and at the same time, the second semi-hollow body B is formed during the secondary formation.
It is also possible to exert a pressing action of pushing the joint portion of. When the pushing members 6, 6, ... Have a pushing action, the joining portion is pushed by a plurality of points. Therefore, a ring-shaped member is provided at the tip of the pushing members 6, 6 ,. It can also be carried out by pressing on the surface, but it is not shown in the figure. It should be noted that a sprue 7 having a gradient of about 3 to 6 degrees is provided at a substantially central portion of the slide mold 1, and resin injected from a nozzle of an injection machine passes through the sprue 7 to the second cavity 4 and the first cavity. The cavity 14 and the like are filled.

【００１３】可動金型１０の上方には、スライド金型１
の第１コア２と対をなす第１凹部１２が設けられてい
る。この第１凹部１２の径は、第１コア２の径よりも所
定量だけ大きく、また第１コア２の突出量より深い。し
たがって、可動金型１０をスライド金型１に対して型締
めすると、図２に示されているように、第１凹部１２の
内周面と第１コア２の外周面との間に所定間隔の第１キ
ャビティ１４が形成される。この第１キャビティ１４に
より所定厚さの第１半中空体Ａが成形される。第１凹部
１２の開口部の周囲にも、リング状に切り落とされた所
定深さの段部１５が設けられている。この段部１５によ
り第１半中空体Ａに接合部が一体的に成形される。Above the movable mold 10, a slide mold 1 is provided.
The first recessed portion 12 that is paired with the first core 2 is provided. The diameter of the first recess 12 is larger than the diameter of the first core 2 by a predetermined amount and is deeper than the protruding amount of the first core 2. Therefore, when the movable mold 10 is clamped with respect to the slide mold 1, as shown in FIG. 2, a predetermined space is provided between the inner peripheral surface of the first recess 12 and the outer peripheral surface of the first core 2. The first cavity 14 is formed. The first cavity 14 molds the first semi-hollow body A having a predetermined thickness. A ring-shaped stepped portion 15 having a predetermined depth is also provided around the opening of the first recess 12. By this step portion 15, the joint portion is integrally formed with the first semi-hollow body A.

【００１４】段部１５に対向して、可動金型１０にも複
数本の押部材１６、１６、…が進退自在に設けられてい
る。これらの押部材１６、１６、…は、押圧板１７に取
り付けられ、２次形成において加熱溶着して得られる中
空体製品を押し出すエジェクタの作用を奏すると共に、
２次形成時に接合部を押す押圧作用も奏する。なお、押
部材１６、１６、…の先端部にも前述したようにリング
状の部材を設けて線あるいは面で接合部を押圧するよう
に実施することもできる。A plurality of pressing members 16, 16, ... Are provided on the movable mold 10 so as to be movable back and forth so as to face the step portion 15. These pressing members 16, 16, ... Are attached to the pressing plate 17 and act as an ejector for pushing out a hollow body product obtained by heating and welding in the secondary formation.
It also exerts a pressing action of pushing the joint portion during the secondary formation. It is also possible to provide a ring-shaped member at the tip of the pressing members 16, 16, ... As described above so as to press the joint with a line or a surface.

【００１５】可動金型１０の下方には、スライド金型１
の第２凹部３と対をなす第２コア１３が設けられてい
る。この第２コア１３の径は、第２凹部３の径よりも所
定量だけ小さく、また突出量は凹部３の深さよりも小さ
い。したがって、可動金型１０をスライド金型１に対し
て型締めすると、第２コア１３の外周面と第２凹部３の
内周面との間に所定間隔の第２キャビティ４が形成さ
れ、この第２キャビティ４により所定厚さの第２半中空
体Ｂが成形される。また、第２コア１３の周りには、リ
ング状に複数個の突起１８、１８、…が形成されてい
る。この突起１８、１８、…は型締めしたとき段部５内
に位置し、これらの突起１８、１８、…により接合部の
内側面に凹溝が形成される。なお、第１、２のキャビテ
ィ１４、４の径を、必ずしも等しくする必要はないが、
段部５、１５の内径および外径は略等しくなっている。Below the movable mold 10, a slide mold 1 is provided.
The second core 13 that is paired with the second concave portion 3 is provided. The diameter of the second core 13 is smaller than the diameter of the second recess 3 by a predetermined amount, and the protrusion amount is smaller than the depth of the recess 3. Therefore, when the movable mold 10 is clamped to the slide mold 1, the second cavities 4 are formed at a predetermined interval between the outer peripheral surface of the second core 13 and the inner peripheral surface of the second recess 3. The second cavity 4 molds the second semi-hollow body B having a predetermined thickness. A plurality of ring-shaped protrusions 18, 18, ... Are formed around the second core 13. The protrusions 18, 18, ... Are located in the step portion 5 when the mold is clamped, and the protrusions 18, 18, ... Form a concave groove on the inner side surface of the joint portion. The diameters of the first and second cavities 14 and 4 are not necessarily equal, but
The inner diameter and the outer diameter of the step portions 5 and 15 are substantially equal.

【００１６】次に、上記型装置を用いて、合成樹脂製の
中空体製品Ｓを製造する成形方法を説明する。可動金型
１０をスライド金型１に突き合わせて、従来周知の手段
により型締をする。そうすると、図２の状態になる。す
なわち、スライド金型１の第１コア２は、可動金型１０
の第１凹部１２内に位置し、第１コア２と第１凹部１２
とにより第１キャビティ１４が形成される。同時にスラ
イド金型１の第２凹部３と、可動金型１０の第２コア１
３とにより第２キャビティ４が形成される。また、押部
材６、６、１６、１６、…の先端部は、段部５、１５の
底面と同一面になる。Next, a molding method for manufacturing the hollow body product S made of synthetic resin by using the above mold device will be described. The movable mold 10 is butted against the slide mold 1, and the mold is clamped by a conventionally known means. Then, the state shown in FIG. 2 is obtained. That is, the first core 2 of the slide mold 1 is the movable mold 10
Located in the first recess 12 of the first core 2 and the first recess 12
The first cavity 14 is formed by. At the same time, the second recess 3 of the slide mold 1 and the second core 1 of the movable mold 10
The second cavity 4 is formed by 3 and. Further, the tip ends of the pressing members 6, 6, 16, 16, ... Are flush with the bottom surfaces of the step portions 5, 15.

【００１７】射出機のノズルから、可塑化された溶融樹
脂Ｊをスプルー７に射出する。溶融樹脂Ｊは、スプルー
７からランナー、ゲート等を介して第１、２キャビティ
１４、４に充填される。これにより第１キャビティ１４
で、第１半中空体Ａが接合部Ｓａと一体的に、そして第
２キャビティ４で、第２半中空体Ｂが接合部Ｓｂと共に
同時に成形される。このとき第２半中空体Ｂの接合部Ｓ
ｂの内側にはリング状に凹溝が形成される。冷却固化を
待つ。これで１次成形は終了する。The plasticized molten resin J is injected into the sprue 7 from the nozzle of the injection machine. The molten resin J is filled in the first and second cavities 14 and 4 from the sprue 7 via a runner, a gate and the like. Thereby, the first cavity 14
Then, the first semi-hollow body A is molded integrally with the joint Sa, and the second semi-hollow body B is simultaneously molded with the joint Sb in the second cavity 4. At this time, the joint S of the second semi-hollow body B
A ring-shaped groove is formed inside b. Wait for cooling and solidification. This completes the primary molding.

【００１８】次いで、２次成形に移行する。可動金型１
０を開く。そうしてスライド金型１を、第２半中空体Ｂ
が保持されている状態で上方にスライドさせる。このと
き、第２半中空体Ｂの接合部Ｓｂが、第１半中空体Ａの
接合部Ｓａに整合する位置までスライドさせる。第２半
中空体Ｂの接合部Ｓｂの内側に成形されているリング状
の凹溝を利用して、電熱コイルあるいはヒータ線Ｈ、
Ｈ、…を接合部Ｓｂの内側に仮止めする。そうして可動
金型１０を軽く型締めする。ヒータ線Ｈ、Ｈ、…を夾ん
で型締めされた状態は図３に示されている。ヒータ線
Ｈ、Ｈに通電して、第１、２半中空体Ａ、Ｂの接合部Ｓ
ａ、Ｓｂの内側を加熱し、一部溶融する。同時に押圧板
１７を駆動して押部材１６、１６、…で第１半中空体Ａ
の接合部Ｓａを外側から押す。またスライド金型１に設
けられている押部材６、６、…で第２半中空体Ｂの接合
部Ｓｂを外側から押す、あるいは押部材１６、１６、…
で押される力を受ける。これによりヒータ線Ｈ、Ｈが埋
め殺しされた状態で接合部Ｓａ、Ｓｂが接合され、製品
Ｐが得られる。再度型を開いて押部材１６、１６、６、
６…で製品Ｐを取り出す。必要に応じてヒータ線Ｈ、Ｈ
の端部を切断する。Then, the secondary molding is performed. Movable mold 1
Open 0. Then, the slide mold 1 is attached to the second semi-hollow body B.
Slide upward while holding. At this time, the joint portion Sb of the second semi-hollow body B is slid to a position aligned with the joint portion Sa of the first semi-hollow body A. Utilizing a ring-shaped groove formed inside the joint Sb of the second semi-hollow body B, an electric heating coil or a heater wire H,
.. are temporarily fixed to the inside of the joint Sb. Then, the movable mold 10 is lightly clamped. The state where the heater wires H, H, ... Are clamped and clamped is shown in FIG. By energizing the heater wires H, H, the joint S of the first and second semi-hollow bodies A, B
The insides of a and Sb are heated and partially melted. At the same time, the pressing plate 17 is driven so that the pressing members 16, 16, ...
The joint Sa of is pushed from the outside. Further, pushing members 6, 6, ... Provided in the slide mold 1 push the joint portion Sb of the second semi-hollow body B from the outside, or pushing members 16, 16 ,.
Receives the force pushed by. As a result, the joints Sa and Sb are joined together with the heater wires H and H being buried therein, and the product P is obtained. Open the mold again and push members 16, 16, 6,
The product P is taken out at 6 ... Heater wire H, H if necessary
Cut the end of.

【００１９】押圧力が不十分で充分な接合力が得られな
いときは、図４に示されているような押し装置２０を使
用する。押し装置２０は、第１半中空体Ａの接合部Ｓａ
を直接押すリング状部材２１と、このリング状部材２１
を支持している複数本の支持部材２２、２２、…と、こ
の支持部材２２、２２、…を押すピストン・シリンダユ
ニット２３とから構成されている。図４に示されている
ように、成形品Ｐがスライド金型１の第２凹部３に支持
されている状態で、ピストン・シリンダユニット２３に
よりリング状部材２１で、前述したようにして第１半中
空体Ａの接合部Ｓａを押圧して接合する。When the pressing force is insufficient and a sufficient joining force cannot be obtained, the pressing device 20 as shown in FIG. 4 is used. The pushing device 20 includes the joint portion Sa of the first semi-hollow body A.
The ring-shaped member 21 for directly pressing
, And a piston / cylinder unit 23 that pushes the support members 22, 22 ,. As shown in FIG. 4, in a state where the molded product P is supported in the second recess 3 of the slide mold 1, the piston-cylinder unit 23 is used to form the ring-shaped member 21 so that the first member is formed as described above. The joining portion Sa of the semi-hollow body A is pressed and joined.

【００２０】本実施例によると、第１、２半中空体Ａ、
Ｂは、その接合部Ｓａ、Ｓｂの、接合に必要な内側がヒ
ータ線Ｈ、Ｈで溶融されるので、接合部の外側が溶融し
て変形を起こすようなことはない。また接合に必要な部
分だけが溶融されるので、溶融する熱エネルギが少なく
て済む利点もある。さらには２次成形時に成形工程が複
雑になる射出の問題、樹脂の選択の問題等もない。ま
た、１次成形において第１、２半中空体Ａ、Ｂを同時に
同じ金型１、１０で成形するので、効率がよく、量産も
可能である。さらには同じ金型１、１０で２次成形もす
るので、金型が安価で低コストで中空体製品Ｐを製造す
ることができる利点もある。なお、スライド金型１は、
水平軸を中心として回転する回転金型でも実施できるこ
とは明らかである。また、押部材６、６、…が設けられ
ていなくても、段部５の底面で押部材１６、１６、…で
押される力を受けて溶着できることも明らかである。According to this embodiment, the first and second semi-hollow bodies A,
In B, since the insides of the joints Sa and Sb necessary for joining are melted by the heater wires H and H, the outside of the joints is not melted and deformed. Further, since only the portion necessary for joining is melted, there is also an advantage that less heat energy is required for melting. Further, there is no problem of injection, which makes the molding process complicated at the time of secondary molding, and no problem of resin selection. Further, in the primary molding, since the first and second semi-hollow bodies A and B are simultaneously molded with the same molds 1 and 10, efficiency is high and mass production is possible. Furthermore, since secondary molding is performed using the same molds 1 and 10, there is an advantage that the mold is inexpensive and the hollow body product P can be manufactured at low cost. The slide mold 1 is
Obviously, it can be carried out by a rotating mold rotating about a horizontal axis. It is also apparent that even if the pressing members 6, 6, ... Are not provided, they can be welded by receiving the force pressed by the pressing members 16, 16 ,.

【００２１】次に、図５により金型の第２の実施例を説
明する。なお、前述した第１実施例の構成要素と同じよ
うな要素には、同じ参照符号を付けて重複説明を避け
る。第２実施例によると、スライド金型１の第１コア２
の周りにも、リング状に断面が半円形の突起８、８、…
が複数個形成されている。これらの突起８、８、…は型
締めしたとき段部１５内に位置し、これらの突起８、
８、…により第１半中空体Ａの接合部Ｓａの内側面に複
数個の、断面が半円の凹溝が形成される。また可動金型
１０の第２コア１３の周りにも、同様にリング状に突起
１８’、１８’、…が形成されている。これらの突起１
８’、１８’、…の大きさ、径等は、前述した突起８、
８、…の大きさ、径等と略等しい。したがって、これら
の突起１８’、１８’、…により第２半中空体Ｂの接合
部Ｓｂの内側面に形成される断面が半円の凹溝は、前述
した突起８、８、…により形成される凹溝と一致する。
なお、スライド金型１あるいは可動金型１０には、外部
から凹溝に熱風を供給する供給路および排気する排気路
を形成するためのコアが設けられているが、図には示さ
れていない。Next, a second embodiment of the die will be described with reference to FIG. The same components as those of the first embodiment described above are designated by the same reference numerals to avoid redundant description. According to the second embodiment, the first core 2 of the slide mold 1
Also around the circumference of the ring-shaped protrusions 8, 8, ...
Are formed in plural. These protrusions 8, 8, ... Are located in the step portion 15 when the mold is clamped, and these protrusions 8, 8 ,.
A plurality of concave grooves having a semicircular cross section are formed on the inner side surface of the joint portion Sa of the first semi-hollow body A by 8, ... Similarly, ring-shaped projections 18 ', 18', ... Are formed around the second core 13 of the movable mold 10. These protrusions 1
The size, diameter, etc. of 8 ′, 18 ′, ...
The size, diameter, etc. of 8, ... Therefore, the concave groove having a semicircular cross section formed on the inner surface of the joint portion Sb of the second semi-hollow body B by these projections 18 ', 18', ... Is formed by the above-mentioned projections 8, 8 ,. Match the groove.
The slide mold 1 or the movable mold 10 is provided with a core for forming a supply passage for supplying hot air and an exhaust passage for discharging hot air from the outside, but it is not shown in the drawing. .

【００２２】次に、上記金型を用いて、合成樹脂製の中
空体製品Ｓを製造する成形方法を説明する。図５に示さ
れているように、可動金型１をスライド金型１０に対し
て型締めをする。そうして前述したようにして溶融樹脂
を第１、２キャビテイ１４、４に充填する。そうする
と、第１キャビテイ１４で第１半中空体Ａが接合部Ｓａ
と共に成形される。このとき、接合部Ｓａの内側には複
数個の断面が半円状の凹溝が成形される。同時に第２キ
ャビテイ４で第２半中空体Ｂが成形される。このとき第
２半中空体Ｂの接合部Ｓｂの内側にも複数個の凹溝が成
形される。冷却固化を待つ。これで１次成形を終わる。Next, a molding method for manufacturing a hollow body product S made of synthetic resin using the above mold will be described. As shown in FIG. 5, the movable mold 1 is clamped to the slide mold 10. Then, the molten resin is filled into the first and second cavities 14 and 4 as described above. Then, in the first cavity 14, the first semi-hollow body A is joined to the joint Sa.
Is molded with. At this time, a plurality of concave grooves having a semicircular cross section are formed inside the joint Sa. At the same time, the second semi-hollow body B is molded in the second cavity 4. At this time, a plurality of concave grooves are also formed inside the joint portion Sb of the second semi-hollow body B. Wait for cooling and solidification. This completes the primary molding.

【００２３】第１実施例と同様に、可動金型１０を開
き、スライド金型１を上方にスライドさせる。このと
き、第２半中空体Ｂの接合部Ｓｂが、第１半中空体Ａの
接合部Ｓａに整合する位置までスライドさせる。そうし
て軽く型締めする。そうすると、第１半中空体Ａの接合
部Ｓａの凹溝と、第２半中空体Ｂの接合部Ｓｂの凹溝と
が整合し、断面が円形のリング状の通路Ｆ、Ｆ、…が、
図６に示されているように、接合部Ｓａ、Ｓｂの内側に
形成される。これらの通路Ｆ、Ｆ、…には、外部から供
給路と排気路とが連通しているので、供給路から通路
Ｆ、Ｆ、…に所定温度に加熱されている熱風を循環させ
る。そうすると、第１、２半中空体Ａ、Ｂの接合部Ｓ
ａ、Ｓｂの内側が通路Ｆ、Ｆ、…の周りから一部溶融す
る。そこで熱風の供給を停止し、前述したように、押圧
板１７を駆動して押部材１６、１６で第１半中空体Ａの
接合部Ｓａを外側から押す。またスライド金型１に設け
られている押部材６、６で第２半中空体Ｂの接合部Ｓｂ
を外側から押す。これにより通路Ｆ、Ｆ、…が潰れて接
合部Ｓａ、Ｓｂが接合される。接合部Ｓａ、Ｓｂが潰れ
て接合された状態は図７に示されている。押部材１６、
１６による押圧力が不十分で、充分な接合が得られない
ときは、前述したように押し装置２０を使用する。Similar to the first embodiment, the movable mold 10 is opened and the slide mold 1 is slid upward. At this time, the joint portion Sb of the second semi-hollow body B is slid to a position aligned with the joint portion Sa of the first semi-hollow body A. Then lightly clamp the mold. Then, the concave groove of the joint portion Sa of the first semi-hollow body A and the concave groove of the joint portion Sb of the second semi-hollow body B are aligned and the ring-shaped passages F, F, ...
As shown in FIG. 6, it is formed inside the joints Sa and Sb. Since a supply passage and an exhaust passage are communicated from outside to these passages F, F, ..., Hot air heated to a predetermined temperature is circulated from the supply passage to the passages F, F ,. Then, the joint S of the first and second semi-hollow bodies A and B
The insides of a and Sb are partially melted from around the passages F, F, .... Therefore, the supply of hot air is stopped, and as described above, the pressing plate 17 is driven to press the joint Sa of the first semi-hollow body A from the outside with the pressing members 16, 16. Further, the pressing members 6, 6 provided on the slide mold 1 are used to join the second semi-hollow body B to the joint Sb.
From the outside. As a result, the passages F, F, ... Are crushed and the joints Sa, Sb are joined. The state where the joints Sa and Sb are crushed and joined is shown in FIG. 7. Push member 16,
When the pressing force by 16 is insufficient and sufficient joining cannot be obtained, the pushing device 20 is used as described above.

【００２４】本実施例によると、熱風で接合部Ｓａ、Ｓ
ｂの内側が溶融されるので、接合部Ｓａ、Ｓｂに異物が
入り込むことがなく、接合強度の大きい成形品Ｐが得ら
れる。また通路Ｆ、Ｆ、…が潰れて接合部Ｓａ、Ｓｂが
接合されるので、接合距離あるいは接合面積が広くなる
効果も得られる。According to this embodiment, the joints Sa and S are heated by hot air.
Since the inside of b is melted, foreign matter does not enter the joints Sa and Sb, and a molded product P having a high joint strength can be obtained. Further, since the passages F, F, ... Are crushed and the joining portions Sa, Sb are joined, the effect of increasing the joining distance or joining area can be obtained.

【００２５】図８に、金型の第３の実施例が示されてい
る。本実施例においても前述した第１実施例の構成要素
と同じような要素には、同じ参照符号を付けて重複説明
を避ける。あるいは同じ参照符号にダッシュ「’」を付
けて説明を簡単にする。第３の実施例によっても、可動
金型１０の第１凹部１２の周囲には、リング状に切り落
とされた段部１５’が設けられているが、この段部１
５’は、第１、２キャビテイ１４、４の厚みに対して充
分深い。したがって、この段部１５’で成形される第１
半中空体Ａの接合部Ｓａ’は、第１キャビテイ１４で成
形される部分に比較して肉厚で、第１キャビテイ１４で
成形される部分が冷却固化しても、段部１５’で成形さ
れる接合部Ａａ’の内部は固化しない。また第３の実施
例によると、スライド金型１の第１コア２の周りには、
突起８’が形成されている。この突起８’は型締めした
とき段部１５内に位置し、この突起８’により接合部の
内側に、断面が矩形の凹溝が形成される。FIG. 8 shows a third embodiment of the mold. Also in this embodiment, elements similar to those of the first embodiment described above are designated by the same reference numerals to avoid redundant description. Alternatively, a dash "'" is added to the same reference numeral to simplify the description. Also according to the third embodiment, a ring-shaped stepped portion 15 ′ is provided around the first recess 12 of the movable mold 10.
5'is sufficiently deep with respect to the thickness of the first and second cavities 14, 4. Therefore, the first molded by this step 15 '
The joint portion Sa ′ of the semi-hollow body A is thicker than the portion formed by the first cavity 14, and even if the portion formed by the first cavity 14 is cooled and solidified, the joint portion Sa ′ is formed by the step portion 15 ′. The inside of the joined portion Aa 'to be solidified does not solidify. Further, according to the third embodiment, around the first core 2 of the slide mold 1,
The protrusion 8'is formed. The protrusion 8'is located inside the step portion 15 when the mold is clamped, and the protrusion 8'forms a concave groove having a rectangular cross section inside the joint portion.

【００２６】スライド金型１の段部５’も、第１、２キ
ャビテイ１４、４の厚みに対して充分深く形成されてい
る。したがって、この段部５’で成形される第２半中空
体Ｂの接合部Ｓｂ’も、第２キャビテイ４で成形される
部分に比較して肉厚で、第２キャビテイ４で成形される
部分が冷却固化しても、段部５’で成形される接合部Ａ
ｂ’の内部は固化しない。可動金型１０の第２コア１３
の周りにも、同様に突起１８”が形成されている。この
突起１８”も、型締めしたときスライド金型１の段部
５’内に位置し、この突起１８”により接合部Ｓｂ’の
内側に凹溝が形成される。The step portion 5'of the slide mold 1 is also formed sufficiently deep with respect to the thickness of the first and second cavities 14 and 4. Therefore, the joint portion Sb ′ of the second semi-hollow body B formed by the step portion 5 ′ is also thicker than the portion formed by the second cavity 4, and the portion formed by the second cavity 4 is large. Even if the solidified material is cooled and solidified, the joint A formed by the step 5 '
The inside of b'does not solidify. Second core 13 of movable mold 10
Similarly, a protrusion 18 "is also formed around the periphery of the slide mold. This protrusion 18" is also located in the step 5'of the slide mold 1 when the mold is clamped, and the protrusion 18 "causes the joint Sb ' A groove is formed inside.

【００２７】この金型を使用して次のようにして成形す
る。すなわち図８に示されているように、型締めして溶
融樹脂を第１、２キャビテイ１４、４に充填する。そう
すると、第１キャビテイ１４で第１半中空体Ａが接合部
Ｓａ’と共に成形される。このとき、接合部Ｓａ’の内
側には断面が矩形の凹溝が成形される。同時に第２キャ
ビテイ４で第２半中空体Ｂが成形される。このとき第２
半中空体Ｂの接合部Ｓｂ’の内側にも凹溝が成形され
る。これで１次成形を終わる。Molding is performed as follows using this mold. That is, as shown in FIG. 8, the mold is clamped and the molten resin is filled in the first and second cavities 14 and 4. Then, the first semi-hollow body A is molded together with the joint Sa 'in the first cavity 14. At this time, a concave groove having a rectangular cross section is formed inside the joint Sa '. At the same time, the second semi-hollow body B is molded in the second cavity 4. At this time the second
A groove is also formed inside the joint Sb ′ of the semi-hollow body B. This completes the primary molding.

【００２８】少なくとも接合部Ｓａ’、Ｓｂ’の内部が
固化する前に、前述した第１、２実施例と同様に、可動
金型１０を開き、スライド金型１を上方にスライドさせ
る。このとき、第２半中空体Ｂの接合部Ｓｂ’が、第１
半中空体Ａの接合部Ｓａ’に整合する位置までスライド
させる。そうすると、第１半中空体Ａの接合部Ｓａ’の
凹溝と、第２半中空体Ｂの接合部Ｓｂ’の凹溝とが整合
し、断面が円形の空洞Ｋが、図９に示されているように
形成される。この状態で前述したように、押圧板１７を
駆動して押部材１６、１６で第１半中空体Ａの接合部Ｓ
ａ’を外側から押す。またスライド金型１に設けられて
いる押部材６、６で第２半中空体Ｂの接合部Ｓｂ’を外
側から押す。接合部Ｓａ’、Ｓｂ’は肉厚に成形され、
少なくともその内部の樹脂Ｊ、Ｊは溶融状態にあるの
で、空洞Ｋが潰れて接合部Ｓａ’、Ｓｂ’が接合され
る。接合部Ｓａ’、Ｓｂ’が接合され、成形品Ｐが得ら
れた状態は図１０に示されている。押圧力が不十分で充
分な接合が得られないときは、図４あるいは図７に示さ
れているような押し装置２０を別途使用して接合する。Before at least the insides of the joints Sa 'and Sb' are solidified, the movable mold 10 is opened and the slide mold 1 is slid upward as in the first and second embodiments. At this time, the joint portion Sb ′ of the second semi-hollow body B is
The semi-hollow body A is slid to a position aligned with the joint Sa '. Then, the concave groove of the joint portion Sa ′ of the first semi-hollow body A and the concave groove of the joint portion Sb ′ of the second semi-hollow body B are aligned, and a cavity K having a circular cross section is shown in FIG. Are formed. In this state, as described above, the pressing plate 17 is driven to push the joining members S of the first semi-hollow body A by the pushing members 16 and 16.
Press a'from the outside. Further, the joining members Sb ′ of the second semi-hollow body B are pushed from the outside by the pushing members 6 provided on the slide mold 1. The joints Sa 'and Sb' are formed to have a thick wall,
Since at least the resin J, J inside thereof is in a molten state, the cavity K is crushed and the joints Sa ', Sb' are joined. FIG. 10 shows a state in which the joint P is obtained by joining the joints Sa ′ and Sb ′. When the pressing force is insufficient and sufficient joining cannot be obtained, the pushing device 20 as shown in FIG. 4 or FIG. 7 is separately used for joining.

【００２９】第３実施例によると、第１、２実施例と同
様な効果が得られると共に、接合部Ｓａ’、Ｓｂ’の内
側を再度加熱して溶融する必要がないので、熱エネルギ
が節約できる効果が得られる。また空洞Ｋが潰れて接合
されるので、接合面積が見かけ上広くなり接合強度が大
きくなる。According to the third embodiment, the same effect as in the first and second embodiments can be obtained, and since it is not necessary to reheat and melt the insides of the joints Sa 'and Sb', heat energy is saved. The effect that can be obtained is obtained. Further, since the cavities K are crushed and joined, the joint area is apparently widened and the joint strength is increased.

【００３０】[0030]

【発明の効果】以上ように、本発明によると、１次成形
において、移動金型と可動金型とを使用して第１、２半
中空体を接合部を有するように一体的に成形し、そして
２次成形において、前記移動金型を可動金型に対して移
動させて１次成形で成形された第１、２半中空体の一方
の半中空体を他方の半中空体に、それぞれの接合部が対
向するように重ね、そして重ねられた第１、２半中空体
の接合部を接合して中空体製品を得るとき、接合部の内
面側を加熱するので、接合部の外側が溶融して変形を起
こすようなことはなく、また接合に必要な部分だけが溶
融されるので、溶融する熱エネルギが少なくて済むとい
う本発明特有の効果が得られる。また２次成形時に成形
工程が複雑になる射出の問題、樹脂の選択の問題等もな
い。さらには、１次成形において第１、２半中空体を同
時に同じ金型で成形するので、効率がよく、量産も可能
で、同じ金型で２次成形もするので、金型が安価で低コ
ストで中空体製品を成形することができる利点もある。As described above, according to the present invention, in the primary molding, the first and second semi-hollow bodies are integrally molded so as to have the joint portion by using the movable mold and the movable mold. Then, in the secondary molding, one of the first and second semi-hollow bodies molded by the primary molding by moving the moving mold with respect to the movable mold is transformed into the other semi-hollow body, respectively. When the joined parts of the first and second semi-hollow bodies are joined to obtain a hollow body product, the inner surface side of the joined part is heated, so that the outside of the joined part is It does not melt and cause deformation, and since only the portion necessary for bonding is melted, the effect unique to the present invention that the heat energy to be melted is small can be obtained. Further, there is no problem of injection that complicates the molding process at the time of secondary molding, and no problem of resin selection. Furthermore, in the primary molding, the first and second semi-hollow bodies are simultaneously molded in the same mold, so that the mold is efficient and mass-produced, and the secondary mold is performed in the same mold, so the mold is inexpensive and low in cost. There is also an advantage that hollow body products can be formed at low cost.

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

【図１】 本発明の金型の第１実施例を示す、一部切欠
断面図である。FIG. 1 is a partially cutaway sectional view showing a first embodiment of a mold of the present invention.

【図２】 第１実施例の金型が型締めされている状態を
示す、一部切欠断面図である。FIG. 2 is a partially cutaway sectional view showing a state where the mold of the first embodiment is clamped.

【図３】 第１実施例の金型により２次成形している状
態を示す、一部切欠断面図である。FIG. 3 is a partially cutaway cross-sectional view showing a state where secondary molding is performed by the mold of the first embodiment.

【図４】 第１実施例の金型により２次成形している他
の状態を示す、一部切欠断面図である。FIG. 4 is a partially cutaway cross-sectional view showing another state in which secondary molding is performed by the mold of the first embodiment.

【図５】 金型の第２実施例を示す、一部切欠断面図で
ある。FIG. 5 is a partially cutaway sectional view showing a second embodiment of a mold.

【図６】 第２実施例の金型により２次成形している状
態を示す、一部切欠断面図である。FIG. 6 is a partially cutaway cross-sectional view showing a state where secondary molding is performed by the mold of the second embodiment.

【図７】 第２実施例の金型により２次成形している他
の状態を示す、一部切欠断面図である。FIG. 7 is a partially cutaway cross-sectional view showing another state in which secondary molding is performed by the mold of the second embodiment.

【図８】 金型の第３実施例を示す、一部切欠断面図で
ある。FIG. 8 is a partially cutaway sectional view showing a third embodiment of a mold.

【図９】 第３実施例の金型により２次成形している初
期の状態を示す、一部切欠断面図である。FIG. 9 is a partially cutaway sectional view showing an initial state in which secondary molding is performed by the mold of the third embodiment.

【図１０】第３実施例の金型により２次成形している最
終状態を示す、一部切欠断面図である。FIG. 10 is a partially cutaway cross-sectional view showing a final state in which secondary molding is performed by the mold of the third embodiment.

【符号の説明】[Explanation of symbols]

１ スライド金型 ２
第２コア ３ 第２凹部 ４
第１キャビテイ ５ 段部 ８
突起 １０ 可動金型 １２
第１凹部 １３ 第２コア １４
第１キャビティ １５ 段部 １６
押部材 １８ 突起 Ａ 第１半中空体 Ｂ
第２半中空体 Ｓａ、Ｓｂ 接合部 Ｈ
ヒータ Ｆ 通路1 slide mold 2
Second core 3 Second recess 4
1st cavity 5 steps 8
Protrusion 10 Movable mold 12
First recess 13 Second core 14
First cavity 15 Step 16
Pushing member 18 Protrusion A First semi-hollow body B
Second semi-hollow body Sa, Sb Joint H
Heater F passage

─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───

【手続補正書】[Procedure amendment]

【提出日】平成５年８月５日[Submission date] August 5, 1993

【手続補正１】[Procedure Amendment 1]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】請求項５[Name of item to be corrected] Claim 5

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【手続補正２】[Procedure Amendment 2]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】００１１[Correction target item name] 0011

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【００１１】スライド金型１の、図において上方には、
パーティングラインから突出した半球形の第１コア２が
設けられている。この第１コア２は、後述する可動金型
１０の第１凹部１２と協働して、第１キャビティ１４を
形成し、この第１キャビティ１４により中空体製品Ｓの
一方の第１半中空体Ａが成形される。第１コア２の下方
には、第１コア２と所定の間隔をおいて第２凹部３が設
けられている。この第２凹部３は、可動金型１０の第２
コア１２と協働して第２キャビティ４を形成する。この
第２キャビティ４により空体製品Ｓの他方の第２半中空
体Ｂが成形される。Above the slide mold 1 in the figure ,
A first hemispherical core 2 protruding from the parting line is provided. The first core 2 cooperates with a first recess 12 of a movable mold 10 described later to form a first cavity 14, and the first cavity 14 allows the first semi-hollow body of one of the hollow body products S to be formed. A is molded. Below the first core 2, a second recess 3 is provided at a predetermined distance from the first core 2. The second concave portion 3 is the second concave portion of the movable mold 10.
The second cavity 4 is formed in cooperation with the core 12. The second cavity 4 molds the other second semi-hollow body B of the empty product S.

Claims (6)

【特許請求の範囲】[Claims] 【請求項１】 １次成形において、移動金型１と可動金
型１０とを使用して第１、２半中空体Ａ、Ｂを接合部Ｓ
ａ、Ｓｂを有するように一体的に成形しそして２次成形
において、前記移動金型１を可動金型１０に対して移動
させて１次成形で成形された第１、２半中空体Ａ、Ｂの
一方の半中空体Ｂを他方の半中空体Ａに、それぞれの接
合部Ｓａ、Ｓｂが対向するように重ね、そして重ねられ
た第１、２半中空体Ａ、Ｂの接合部Ｓａ、Ｓｂの内面側
を加熱して、接合部Ｓａ、Ｓｂを加圧溶着して第１、２
半中空体Ａ、Ｂから中空体製品Ｓを得る中空体製品の成
形方法。1. In the primary molding, the movable mold 1 and the movable mold 10 are used to join the first and second semi-hollow bodies A and B to a joint S.
a and Sb are integrally molded, and in the secondary molding, the movable mold 1 is moved with respect to the movable mold 10 to form the first and second semi-hollow bodies A by the primary molding, One semi-hollow body B of B is overlaid on the other semi-hollow body A so that the respective joints Sa and Sb face each other, and the joints Sa of the first and second semi-hollow bodies A and B are overlapped. The inner surface side of Sb is heated and the joints Sa and Sb are pressure-welded to form the first and second parts.
A method for molding a hollow body product, wherein a hollow body product S is obtained from the semi-hollow bodies A and B. 【請求項２】 請求項１記載の第１、２半中空体Ａ、Ｂ
の接合部Ｓａ、Ｓｂの内面側を加熱するとき、加圧溶着
時に接合部Ｓａ、Ｓｂに埋められる電熱コイル、抵抗ヒ
ータ等の電気発熱体Ｈ、Ｈ、…で加熱する中空体製品の
成形方法。2. The first and second semi-hollow bodies A and B according to claim 1.
When heating the inner surface side of the joints Sa and Sb of No. 1, a method for forming a hollow body product, in which electric heating coils H, H, ... . 【請求項３】 請求項１記載の第１、２半中空体Ａ、Ｂ
の接合部Ｓａ、Ｓｂの内面側を加熱するとき、熱風で加
熱する中空体製品の成形方法。3. The first and second semi-hollow bodies A and B according to claim 1.
A method for molding a hollow body product, wherein the inner surface sides of the joints Sa and Sb of (1) are heated with hot air. 【請求項４】 １次成形において、移動金型１と可動金
型１０とを使用して第１、２半中空体Ａ、Ｂを、それぞ
れの接合部Ｓａ’、Ｓｂ’が他の部分より肉厚になるよ
うに一体的に成形し、 そして２次成形において、１次成形で成形された第１、
２半中空体Ａ、Ｂの肉厚の接合部Ｓａ’、Ｓｂ’が固化
する前に、前記移動金型１を可動金型１０に対して移動
させて１次成形で成形された第１、２半中空体Ａ、Ｂの
一方の半中空体Ｂを他方の半中空体Ａに、それぞれの接
合部Ｓａ’、Ｓｂ’が対向するように重ね、そして重ね
られた第１、２半中空体Ａ、Ｂの接合部Ｓａ’、Ｓｂ’
を加圧溶着して第１、２半中空体Ａ、Ｂから中空体製品
Ｓを得る中空体製品の成形方法。4. In the primary molding, the moving mold 1 and the movable mold 10 are used to form the first and second semi-hollow bodies A and B such that the respective joints Sa 'and Sb' are larger than the other parts. Integrally molded to have a thick wall, and in the secondary molding, the first molded by the primary molding,
(2) Before the thick joints Sa ′, Sb ′ of the semi-hollow bodies A, B are solidified, the movable mold 1 is moved with respect to the movable mold 10 to form the first mold, The first and second semi-hollow bodies B, which are one of the two semi-hollow bodies A and B and are superposed on the other semi-hollow body A so that the respective joints Sa ′ and Sb ′ face each other. Joints Sa 'and Sb' of A and B
1. A method for molding a hollow body product, wherein the hollow body product S is obtained from the first and second semi-hollow bodies A and B by pressure welding. 【請求項５】 移動金型１と可動金型１０とを備え、こ
れらの金型１、１０の一方の金型１には、第１コア２と
第２凹部３とが所定の間隔をおいて、そして他方の金型
１０には、第１凹部１２と第２コア１３とが所定の間隔
をおいてそれぞれ設けられ、 前記第１凹部と第２凹部３との開口部の周囲には、リン
グ状に段部１５、５がそれぞれ形成され、 前記金型１、１０が型締めされると、前記第１コア２と
第１凹部１２とにより第１キャビティ１４が、また前記
第２凹部３と第２コア１３とにより第２キャビティ４が
それぞれ形成されると共に、 前記金型１、１０の少なくとも一方の金型１０には、前
記段部１５に出没する押部材１６、１６、…が設けられ
ていることを特徴とする中空体製品の成形用金型。5. A movable mold 1 and a movable mold 10 are provided, and one mold 1 of the molds 1 and 10 has a first core 2 and a second concave portion 3 with a predetermined interval. In the other mold 10, a first recess 12 and a second core 13 are provided with a predetermined interval, and around the opening of the first recess and the second recess 3, When the ring-shaped steps 15 and 5 are formed and the molds 1 and 10 are clamped, the first core 2 and the first recess 12 form the first cavity 14 and the second recess 3 respectively. The second cavity 4 is formed by the second core 13 and the second core 13, and at least one mold 10 of the molds 1 and 10 is provided with pushing members 16, 16, ... A mold for molding a hollow body product, which is characterized in that 【請求項６】 請求項５記載の第１コア２と第２コア１
３の周りには、段部１５、５側に突出した突起８、１
８’、１８”が設けられている中空体製品の成形用金
型。6. The first core 2 and the second core 1 according to claim 5.
3, the protrusions 8 and 1 projecting toward the steps 15 and 5
Mold for molding hollow body products provided with 8 ', 18 ".
JP5183466A 1993-06-30 1993-06-30 Molding method and molding die for hollow product Expired - Fee Related JP2729900B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5183466A JP2729900B2 (en) 1993-06-30 1993-06-30 Molding method and molding die for hollow product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5183466A JP2729900B2 (en) 1993-06-30 1993-06-30 Molding method and molding die for hollow product

Publications (2)

Publication Number Publication Date
JPH0716945A true JPH0716945A (en) 1995-01-20
JP2729900B2 JP2729900B2 (en) 1998-03-18

Family

ID=16136287

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
JP (1) JP2729900B2 (en)

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US7008509B1 (en) 1999-08-04 2006-03-07 Kao Corporation Molded body with projected part, dry mold for manufacturing the molded body, and method and device for manufacturing the molded body
JP2006255937A (en) * 2005-03-15 2006-09-28 Jms Co Ltd Injection molding, continuous molding method of high frequency welder and molded product
JP2008000995A (en) * 2006-06-22 2008-01-10 Nidec Sankyo Corp Manufacturing method for bonded article made of resin, molding die, and resin bonded article
US7575704B2 (en) 2004-04-30 2009-08-18 The Japan Steel Works, Ltd. Method of molding a hollow article
JP2009220429A (en) * 2008-03-17 2009-10-01 Japan Steel Works Ltd:The Molding method for blow-molded article, blow-molded article and manufacturing apparatus therefor
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US7008509B1 (en) 1999-08-04 2006-03-07 Kao Corporation Molded body with projected part, dry mold for manufacturing the molded body, and method and device for manufacturing the molded body
JP2001333923A (en) * 2000-05-29 2001-12-04 Sunstar Inc Drug supply tool
WO2002002297A1 (en) * 2000-07-03 2002-01-10 Cluster Technology Co., Ltd. Bonding method
JP2003154577A (en) * 2001-11-22 2003-05-27 Toyoda Spinning & Weaving Co Ltd Hollow molded object made of synthetic resin
US7575704B2 (en) 2004-04-30 2009-08-18 The Japan Steel Works, Ltd. Method of molding a hollow article
US7824173B2 (en) 2004-04-30 2010-11-02 The Japan Steel Works, Ltd. Apparatus for molding a hollow molded article
JP2006255937A (en) * 2005-03-15 2006-09-28 Jms Co Ltd Injection molding, continuous molding method of high frequency welder and molded product
JP2008000995A (en) * 2006-06-22 2008-01-10 Nidec Sankyo Corp Manufacturing method for bonded article made of resin, molding die, and resin bonded article
JP2009220429A (en) * 2008-03-17 2009-10-01 Japan Steel Works Ltd:The Molding method for blow-molded article, blow-molded article and manufacturing apparatus therefor
JP4527159B2 (en) * 2008-03-17 2010-08-18 株式会社日本製鋼所 Method and apparatus for forming hollow molded product
WO2011160734A1 (en) * 2010-06-23 2011-12-29 Hummel-Formen Gmbh Method and device for producing a component
WO2012089287A1 (en) * 2010-12-27 2012-07-05 Elringklinger Ag Method and device for producing a component by means of injection moulding and welding
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KR20230018132A (en) * 2021-07-29 2023-02-07 엘지전자 주식회사 Hollow part, method and apparatus for manufacturing the same

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