JP2729900B2 - Molding method and molding die for hollow product - Google Patents

Molding method and molding die for hollow product

Info

Publication number
JP2729900B2
JP2729900B2 JP5183466A JP18346693A JP2729900B2 JP 2729900 B2 JP2729900 B2 JP 2729900B2 JP 5183466 A JP5183466 A JP 5183466A JP 18346693 A JP18346693 A JP 18346693A JP 2729900 B2 JP2729900 B2 JP 2729900B2
Authority
JP
Japan
Prior art keywords
semi
hollow body
mold
hollow
movable mold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP5183466A
Other languages
Japanese (ja)
Other versions
JPH0716945A (en
Inventor
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.)
NIPPON SEIKOSHO KK
Original Assignee
NIPPON SEIKOSHO KK
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 NIPPON SEIKOSHO KK filed Critical NIPPON SEIKOSHO KK
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

Landscapes

  • 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)

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 relates to a method for forming a pair of first and second semi-hollow bodies by primary molding, and forming a joint between the first and second semi-hollow bodies formed by primary molding in a secondary form. The present invention relates to a method for forming a hollow product, which is manufactured by joining by molding, and a mold used for performing the 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 As a method for producing a synthetic resin hollow body product such as a poly tank, a brake fluid tank, a spray tank, a buoy, etc., a molding method using an injection molding machine is known. In the case of manufacturing a hollow body product by an injection molding machine, the hollow body product is formed as a half semi-hollow body or a divided body in the primary formation, the divided surfaces are abutted in the secondary formation, and the abutted portion is determined. Heating or welding 1
Manufactures hollow body products. According to the molding method using this injection molding machine, a completely sealed hollow product can be produced, a hollow product having a uniform thickness can be produced, and a complicated shape can be dealt with. However, the present applicant has further improved the above-mentioned molding method and provided a method of molding a hollow article 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。[0003] In carrying out this method, a set of dies is used. One mold is provided with a male mold and a female mold for forming one semi-hollow body, and the other mold has
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 one mold is slid with respect to the other mold to butt the joining surfaces of the semi-hollow bodies, the molten resin is injected into the periphery of the butt surfaces and integrated to obtain a hollow body product. . Further, a method for producing a hollow product by forming a hollow product as a half semi-hollow body in the primary formation, abutting the divided surfaces in the secondary formation, and heat-welding the abutted portion. 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 next molding, one mold can be slid with respect to the other mold to butt a pair of semi-hollow bodies, and a molten resin can be injected to obtain a hollow body product. There is an advantage that the hollow body product can be mass-produced. Further, since a pair of semi-hollow bodies are formed by injection molding, it has a feature that a hollow body product having a complicated shape can be formed. As described above, although there are many advantages, the molding process may be complicated because the molten resin must be newly injected during the secondary molding. There is also a problem that the familiarity of the molten resin injected during the secondary molding is poor. 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 formed by primary molding is cold,
Even if the molten resin is injected into the joined portion of the cooled semi-hollow body, the strength of the fused 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 selection of the 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。According to the latter method, the above-mentioned problems can be solved. However, since the joining surface must be heated to the extent that the joining surface is melted, the outer surface of the joining portion which is not directly related to joining may be deformed. In addition, since heating is performed from a portion to be joined, that is, a portion other than the joining surface, it takes a long time to melt and consumes more heat energy. The present invention has been proposed in order to improve the above-mentioned problems. Specifically, the strength of the joining portion of a hollow body product formed by secondary forming is sufficiently large, and moreover, at the time of secondary forming. Provided is a molding method of a hollow body product and a mold used for carrying out the method, which do not have an injection problem or a resin selection problem which complicates a molding process, and further, have no problem of deformation of a joint. It is intended to be.

【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。According to the first aspect of the present invention,
In order to achieve the above object, in the primary molding, the first and second semi-hollow bodies are integrally formed so as to have a joint using a movable mold and a movable mold, and in the secondary molding,
The movable mold is moved with respect to the movable mold so that one of the first and second semi-hollow bodies formed by the primary molding faces the other half-hollow body, and the respective joints face each other. Layered on
Then, the inner surface side of the joined portion of the stacked first and second half hollow bodies is heated, and the joined portion is welded under pressure to obtain a hollow body product from the first and second half hollow bodies. The invention according to claim 2 is an electric heating element such as an electric heating coil or a resistance heater which is buried in the joint at the time of pressure welding when heating the inner surface side of the joint of the first and second semi-hollow bodies according to claim 1. The invention according to claim 3 is configured such that when the inner surface side of the joint portion between the first and second half hollow bodies is heated, it is heated by hot air. According to a fourth aspect of the present invention, in the primary molding, the first and second semi-hollow bodies are integrally formed using a movable mold and a movable mold so that each joint portion is thicker than other portions. In the secondary molding, the first and second molded primary moldings are used.
Before the thick joint of the semi-hollow body is solidified, the movable mold is moved with respect to the movable mold, and one of the first and second semi-hollow bodies formed by the primary molding is removed. In the other semi-hollow body,
The joints of the first and second semi-hollow bodies are welded together under pressure so that the joints are opposed to each other.
It is configured to obtain a hollow body product from a semi-hollow body. The invention according to claim 5 relating to a mold includes a movable mold and a movable mold, and the first core and the second recess are provided at a predetermined interval in one of the molds. A first concave portion and a second core are provided at predetermined intervals in the other mold, and a ring-shaped step portion is formed around an opening of the first concave portion and the second concave portion. Are formed, and when the mold is clamped, 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. The at least one of the molds is provided with a pressing member that protrudes and retracts from the step portion. The invention according to claim 6 is configured such that the first core and the second core around claim 5 include: A projection protruding toward the step 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。[Operation] 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 half hollow bodies are formed integrally with the joint. Open the movable mold. Then, the movable mold is slid, for example, while the second semi-hollow body is held. At this time, the joint of the second semi-hollow body is slid to a position matching the joint of the first semi-hollow body. The joints of the first and second semi-hollow bodies are butted, and the inside is heated and melted.
For example, a heater wire is inserted into the inside of the joint, and electricity is supplied to the heater wire to heat and partially melt the inside of the joint between the first and second semi-hollow bodies. Then, the joining part of the first semi-hollow body is pushed by the pressing member to join the joining part. Open the mold again and remove 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, before at least the joint portion of the first and second semi-hollow bodies is solidified, the movable mold is opened, and the movable mold is
The second semi-hollow body is held, for example, by sliding, so as to be aligned with the joint of the first semi-hollow body. Then, the joining portion of the first and second half hollow bodies is pressed by the pressing member, and the joining portion is welded and joined.

【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 according to the invention of claim 6 operates as follows. That is, since the protrusion protruding toward the step portion is provided around the first core and the second core, a plurality of cross-sections having a semicircular shape are formed inside the joint portion between the first and second semi-hollow bodies. A concave groove is formed. Open the movable mold and slide the slide mold. At this time, the joint of the second semi-hollow body is slid to a position matching the joint of the first semi-hollow body. Then lightly clamp the mold. Then, the concave groove of the joint of the first semi-hollow body and the concave groove of the joint of the second semi-hollow body are aligned, and a ring-shaped passage having a circular cross section is formed inside the joint. Therefore, hot air heated to a predetermined temperature is circulated through the passage. Then, the inside of the joint between the first and second half hollow bodies is partially melted from around the passage. Then, the supply of hot air is stopped, and the joining portion of the first semi-hollow body is pushed by the pushing member. This collapses the passage and joins the joint. 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。DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a first embodiment of the mold will be described.
The mold includes 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 that forms a pair with the slide mold 1 are shown. It is shown. In this embodiment, the slide mold 1 is slidably driven up and down 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 upper part of the slide mold 1 in the figure ,
A hemispherical first core 2 protruding from the parting line is provided. The first core 2 cooperates with a first concave portion 12 of a movable mold 10 described later to form a first cavity 14, and the first cavity 14 allows the first half hollow body of the hollow product S to be formed. A is molded. A second recess 3 is provided below the first core 2 at a predetermined interval from the first core 2. The second recess 3 is provided with the second
The second cavity 4 is formed in cooperation with the core 12. The second semi-hollow body B of the hollow body product S is formed by the second cavity 4.

【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。A step 5 having a predetermined depth cut into a ring is provided around the opening of the second recess 3 of the slide mold 1. Since the step portion 5 is in communication with the second concave portion 3, the second semi-hollow body B and the joint portion Sb are integrally formed by the step portion 5. Opposite to the step 5, the slide mold 1 has a plurality of ejector pins or push members 6,
6,... Are provided. The pressing members 6, 6,... Are driven by a pressing plate or the like (not shown), and take a position where the front end portion is flush with the bottom surface of the step portion 5 and a position where the pressing member projects outward. . Therefore, the pressing members 6, 6,... Function as an ejector for extruding the hollow body product S obtained by the secondary formation, and the second semi-hollow body B at the time of the secondary formation.
Can also exert a pressing action of pressing the joint portion of. When the pressing members 6, 6,... Exert a pressing action, the joint is pressed at a plurality of points. Therefore, a ring-shaped member is provided at the tip of the pressing members 6, 6,. It can also be implemented by pressing on the surface, but is not shown in the figure. A sprue 7 having a gradient of about 3 to 6 degrees is provided substantially at the center of the slide mold 1, and the resin injected from the nozzle of the injection machine passes through the sprue 7 through the second cavity 4 and the first cavity 4. 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.
A first concave 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 protrusion of the first core 2. Therefore, when the movable mold 10 is clamped to the slide mold 1, as shown in FIG. 2, a predetermined distance is provided between the inner peripheral surface of the first recess 12 and the outer peripheral surface of the first core 2. Is formed. The first cavity 14 forms a first semi-hollow body A having a predetermined thickness. A step 15 having a predetermined depth cut into a ring is also provided around the opening of the first recess 12. The joint is integrally formed with the first semi-hollow body A by the step portion 15.

【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 able to advance and retreat, facing the step portion 15. These pressing members 16, 16,... Are attached to the pressing plate 17, and have the function of an ejector for extruding a hollow body product obtained by heat welding in the secondary forming, and
It also has a pressing action to press the joint during the secondary formation. As described above, a ring-shaped member may also be provided at the distal end of the pressing members 16, 16,... To press the joint with a line or 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.
A second core 13 paired with the second recess 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 predetermined intervals between the outer peripheral surface of the second core 13 and the inner peripheral surface of the second recess 3. The second cavity 4 forms a second semi-hollow body B having a predetermined thickness. Around the second core 13, a plurality of projections 18, 18,... Are formed in a ring shape. The projections 18, 18,... Are located in the step 5 when the mold is clamped, and these projections 18, 18,. The diameters of the first and second cavities 14 and 4 do not necessarily have to be equal,
The inner and outer diameters of the steps 5, 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 description will be given of a molding method for producing a hollow product S made of a synthetic resin using the above-mentioned mold apparatus. The movable mold 10 is abutted 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
Of the first core 2 and the first recess 12
Thus, the first cavity 14 is formed. At the same time, the second recess 3 of the slide mold 1 and the second core 1 of the movable mold 10
3 form a second cavity 4. The tip portions 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 from the sprue 7 into the first and second cavities 14 and 4 via a runner, a gate, and the like. Thereby, the first cavity 14
Thus, the first semi-hollow body A is integrally formed 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 joining portion S of the second semi-hollow body B
A groove is formed in a ring shape 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。Next, the process proceeds to secondary molding. Movable mold 1
Open 0. Then, the slide mold 1 is moved to the second semi-hollow body B.
Is slid upward while is held. At this time, the joint Sb of the second semi-hollow body B is slid to a position where it matches the joint Sa of the first semi-hollow body A. Utilizing a ring-shaped groove formed inside the joint portion Sb of the second semi-hollow body B, an electric heating coil or a heater wire H,
H are temporarily fixed inside the joint Sb. Then, the movable mold 10 is lightly clamped. FIG. 3 shows a state in which the heater wires H, H,. The heater wire H, H is energized to connect the first and second semi-hollow bodies A, B at the joint S
The inside of a and Sb is heated and partially melted. At the same time, the pressing plate 17 is driven, and the pressing members 16, 16,.
Is pressed from outside. Further, the joining portions Sb of the second semi-hollow bodies B are pushed from outside by the pushing members 6, 6,... Provided on the slide die 1, or the pushing members 16, 16,.
Receives the pushing force. Thus, the joining portions Sa and Sb are joined in a state where the heater wires H and H are buried and the product P is obtained. Open the mold again and press members 16, 16, 6,
6. The product P is taken out by. If necessary, heater wires H, H
And cut off the end.

【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 bonding force cannot be obtained, a pressing device 20 as shown in FIG. 4 is used. The pushing device 20 is provided at the joint Sa of the first semi-hollow body A.
And a ring-shaped member 21 for directly pressing
Are supported, and a piston / cylinder unit 23 that presses the support members 22, 22,... Is provided. As shown in FIG. 4, in a state where the molded product P is supported by the second concave portion 3 of the slide mold 1, the piston / cylinder unit 23 uses the first member as described above with the ring-shaped member 21. The joining part 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 required for joining are melted by the heater wires H and H, the outside of the joints is not melted and deformed. Further, since only a portion necessary for joining is melted, there is an advantage that heat energy to be melted can be reduced. 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, since the first and second semi-hollow bodies A and B are simultaneously molded in the same molds 1 and 10 in the primary molding, the efficiency is high and mass production is possible. Further, since secondary molding is performed with the same molds 1 and 10, there is also an advantage that the hollow body product P can be manufactured at low cost and at low cost. The slide mold 1 is
Obviously, it can also be carried out with a rotating mold rotating about a horizontal axis. It is also clear that even if the pressing members 6, 6,... Are not provided, the welding can be performed 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 mold will be described with reference to FIG. Elements similar to those of the first embodiment described above are denoted by the same reference numerals to avoid redundant description. According to the second embodiment, the first core 2 of the slide mold 1
, Around the ring-shaped projections 8, 8, ...
Are formed. Are located in the step 15 when the mold is clamped, and these projections 8, 8,.
8, a plurality of concave grooves having a semicircular cross section are formed on the inner side surface of the joint Sa of the first semi-hollow body A. Also, around the second core 13 of the movable mold 10, similarly, ring-shaped projections 18 ', 18',... Are formed. These projections 1
The size, diameter, etc. of 8 ′, 18 ′,.
8,... Are substantially equal in size, diameter, etc. Therefore, a 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 the projections 18 ', 18',... Is formed by the above-described projections 8, 8,. Coincide with the concave groove.
The slide mold 1 or the movable mold 10 is provided with a core for forming a supply path for supplying hot air to the concave groove from the outside and an exhaust path for exhausting the groove, but 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 description will be given of a molding method for manufacturing the synthetic resin hollow body product S using the above-mentioned mold. As shown in FIG. 5, the movable mold 1 is clamped to the slide mold 10. Then, the first and second cavities 14 and 4 are filled with the molten resin as described above. Then, the first semi-hollow body A is joined to the joining portion Sa by the first cavity 14.
Molded with. At this time, a plurality of semi-circular concave grooves are formed inside the joint Sa. At the same time, the second semi-hollow body B is formed by the second cavity 4. At this time, a plurality of 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。As in the first embodiment, the movable mold 10 is opened, and the slide mold 1 is slid upward. At this time, the joint Sb of the second semi-hollow body B is slid to a position where it matches the joint Sa of the first semi-hollow body A. Then lightly clamp the mold. Then, the concave groove at the joint Sa of the first semi-hollow body A and the concave groove at the joint Sb of the second semi-hollow body B are aligned, and ring-shaped passages F, F,.
As shown in FIG. 6, it is formed inside the joints Sa and Sb. Since the supply passage and the exhaust passage communicate with the passages F, F,... From the outside, hot air heated to a predetermined temperature from the supply passage to the passages F, F,. Then, the joint S of the first and second half hollow bodies A and B is formed.
a, Sb is partially melted from around the passages F, F,. Then, 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 outside with the pressing members 16, 16. Further, the joining members Sb of the second semi-hollow body B are formed by the pressing members 6 provided on the slide mold 1.
Press from the outside. This collapses the passages F, F,... And joins the joints Sa, Sb. FIG. 7 shows a state where the joints Sa and Sb are crushed and joined. Push member 16,
When the pressing force by 16 is insufficient and sufficient joining cannot be obtained, the pressing 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, S
Since the inside of b is melted, a foreign material does not enter the joints Sa and Sb, and a molded product P having high joint strength can be obtained. Since the passages F, F,... Are crushed and the joints Sa and Sb are joined, the effect of increasing the joint distance or joint area can also 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 the present embodiment, the same reference numerals are given to the same components as those of the above-described first embodiment, and redundant description will be avoided. Alternatively, a dash "'" is appended to the same reference numeral to simplify the description. According to the third embodiment, a step 15 ′ cut into a ring shape 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 and 4. Therefore, the first part formed by this step 15 ′
The joining portion Sa 'of the semi-hollow body A is thicker than the portion formed by the first cavity 14, and is formed by the step portion 15' even if the portion formed by the first cavity 14 is cooled and solidified. The inside of the joined portion Aa ′ does not solidify. Further, according to the third embodiment, around the first core 2 of the slide mold 1,
A projection 8 'is formed. The projection 8 'is located in the step portion 15 when the mold is clamped, and the projection 8' forms a concave groove having a rectangular cross section inside the joint.

【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 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 joining 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 is formed by the second cavity 4. Is cooled and solidified, the joint A formed at the step 5 ′
The inside of b 'does not solidify. Second core 13 of movable mold 10
Is also formed around the periphery of the slide mold 1. The projection 18 ″ is also located in the step 5 ′ of the slide mold 1 when the mold is clamped. A concave 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。Using this mold, molding is performed as follows. That is, as shown in FIG. 8, the first and second cavities 14 and 4 are filled with the molten resin by clamping. Then, the first semi-hollow body A is formed by the first cavity 14 together with the joint Sa '. 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 formed by the second cavity 4. At this time
A concave groove is also formed inside the joining portion 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 Sb ′ of the second semi-hollow body B is
The semi-hollow body A is slid to a position matching the joint Sa '. Then, the concave groove at the joint Sa 'of the first semi-hollow body A and the concave groove of the joint Sb' of the second semi-hollow body B are aligned, and a cavity K having a circular cross section is shown in FIG. It is formed as follows. In this state, as described above, the pressing plate 17 is driven and the pressing members 16, 16 join the joining portion S of the first semi-hollow body A.
Press a 'from outside. Further, the joining members Sb ′ of the second semi-hollow body B are pushed from outside by the pressing members 6 provided on the slide mold 1. The joints Sa ′ and Sb ′ are formed to be thick,
Since at least the resin J therein is in a molten state, the cavity K is crushed and the joints Sa ′ and Sb ′ are joined. FIG. 10 shows a state in which the joined portions Sa ′ and Sb ′ have been joined and the molded product P has been obtained. When the pressing force is insufficient and sufficient bonding cannot be obtained, bonding is performed by using a separate pressing device 20 as shown in FIG. 4 or FIG.

【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 effects as those of the first and second embodiments can be obtained, and it is not necessary to heat and melt the insides of the joints Sa 'and Sb' again, thereby saving heat energy. The effect that can be obtained is obtained. Further, since the cavity K is 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 first molding, the first and second half hollow bodies are integrally formed so as to have a joint by using the movable mold and the movable mold. In the secondary molding, the movable mold is moved with respect to the movable mold, and one of the first and second semi-hollow bodies formed by the primary molding is converted into the other semi-hollow body, respectively. When joining the joined first and second half hollow bodies to obtain a hollow body product by heating the inner surface side of the joined part, the outside of the joined part is Since there is no possibility of deformation due to melting, and only a portion necessary for joining is melted, an effect unique to the present invention that only a small amount of heat energy is required for melting is obtained. In addition, there is no problem of injection which complicates the molding process at the time of secondary molding, and no problem of resin selection. Furthermore, in the first molding, the first and second semi-hollow bodies are molded simultaneously with the same mold, so that the efficiency and mass production are possible, and the secondary molding is performed with the same mold. There is also an advantage that the hollow body product can be formed at a low cost.

【図面の簡単な説明】[Brief description of the 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 in which 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 sectional view showing a state in which 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 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 the 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 sectional view showing a state in which 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 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 the 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 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
2nd core 3 2nd recessed part 4
First cavity 5 Step 8
Projection 10 Movable mold 12
First recess 13 Second core 14
First cavity 15 Step 16
Pushing member 18 Projection A First semi-hollow body B
Second semi-hollow body Sa, Sb Joint H
Heater F passage

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｌ 22:00 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code Agency reference number FI Technical display location B29L 22:00

Claims (6)

(57)【特許請求の範囲】(57) [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 first and second semi-hollow bodies A and B are joined to each other using a movable mold 1 and a movable mold 10 at a joint S.
a, the first and second semi-hollow bodies A formed in the primary molding by moving the movable mold 1 with respect to the movable mold 10 in the secondary molding. B, one semi-hollow body B is superimposed on the other semi-hollow body A such that the respective joints Sa, Sb face each other, and the joint Sa of the superimposed first and second semi-hollow bodies A, B, The inner surface side of Sb is heated, and the joints Sa and Sb are welded under pressure to form the first and second joints.
A method for forming a hollow body product from the semi-hollow bodies A and B to obtain a hollow body product S. 【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 half hollow bodies A and B according to claim 1.
When the inner surfaces of the joints Sa, Sb are heated, the hollow body product is heated by electric heating elements H, H,... Buried in the joints Sa, Sb during pressure welding. . 【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 half hollow bodies A and B according to claim 1.
The method of molding a hollow product in which the inner surfaces of the joints Sa and Sb are heated by 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 first and second semi-hollow bodies A and B are separated from each other by using the movable mold 1 and the movable mold 10 so that the joints Sa ′ and Sb ′ are different from each other. It is molded integrally so as to be thick, and in the secondary molding, the first and the first molded
Before the thick joints Sa ′ and Sb ′ of the two semi-hollow bodies A and B are solidified, the movable mold 1 is moved with respect to the movable mold 10 to form the first and the first molded parts. (2) One semi-hollow body B of the semi-hollow bodies A and B is superimposed on the other semi-hollow body A such that the joints Sa ′ and Sb ′ face each other, and the superimposed first and second semi-hollow bodies Joints Sa 'and Sb' of A and B
And forming a hollow body product S from the first and second half 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１２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. One of the molds 1 and 10 has a first core 2 and a second recess 3 at a predetermined interval. In the other mold 10, a first recess 12 and a second core 13 are provided at predetermined intervals, respectively, and around the opening of the first recess 12 and the second recess 3. ,
Steps 15 and 5 are respectively formed in a ring shape. When the molds 1 and 10 are clamped, a first cavity 14 is formed by the first core 2 and the first recess 12 and a second cavity 3 is formed by the first recess 2. And the second core 13 respectively form a second cavity 4. At least one of the dies 1, 10 is provided with pressing members 16, 16,. A mold for molding a hollow body product, characterized in that it is formed. 【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, 1, 1
A mold for molding a hollow product provided with 8 'and 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 JPH0716945A (en) 1995-01-20
JP2729900B2 true JP2729900B2 (en) 1998-03-18

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ID=16136287

Family Applications (1)

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Country Link
JP (1) JP2729900B2 (en)

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* Cited by examiner, † Cited by third party
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WO2001011141A1 (en) 1999-08-04 2001-02-15 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
AU2001267905A1 (en) * 2000-07-03 2002-01-14 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
JP3855083B2 (en) 2004-04-30 2006-12-06 株式会社日本製鋼所 Method and apparatus for forming hollow molded product
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
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
DE102010032994A1 (en) * 2010-06-23 2011-12-29 Hummel-Formen Gmbh Method for producing a component
DE102010056326A1 (en) * 2010-12-27 2012-06-28 Hummel-Formen Gmbh Method for producing a component
KR102594199B1 (en) * 2021-07-29 2023-10-25 엘지전자 주식회사 Hollow part, and method for manufacturing the same

Also Published As

Publication number Publication date
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