WO2012124618A1 - 中空成形品の製造装置および製造方法 - Google Patents

中空成形品の製造装置および製造方法 Download PDF

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Publication number
WO2012124618A1
WO2012124618A1 PCT/JP2012/056065 JP2012056065W WO2012124618A1 WO 2012124618 A1 WO2012124618 A1 WO 2012124618A1 JP 2012056065 W JP2012056065 W JP 2012056065W WO 2012124618 A1 WO2012124618 A1 WO 2012124618A1
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WO
WIPO (PCT)
Prior art keywords
parison
mold
built
station
hollow molded
Prior art date
Application number
PCT/JP2012/056065
Other languages
English (en)
French (fr)
Inventor
隆俊 渡邉
新谷　智
真広 新堀
航 岩瀬
直也 田渕
一広 大滝
裕司 久富
齊藤　直人
直之 村田
隆一 川地
雄治 伊藤
Original Assignee
八千代工業株式会社
株式会社日本製鋼所
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 八千代工業株式会社, 株式会社日本製鋼所 filed Critical 八千代工業株式会社
Priority to EP12757729.4A priority Critical patent/EP2684681B1/en
Priority to US14/004,224 priority patent/US9358740B2/en
Priority to CN201280012242.1A priority patent/CN103582557B/zh
Publication of WO2012124618A1 publication Critical patent/WO2012124618A1/ja
Priority to US15/142,413 priority patent/US9463602B2/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D22/00—Producing hollow articles
    • B29D22/003—Containers for packaging, storing or transporting, e.g. bottles, jars, cans, barrels, tanks
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06905—Using combined techniques for making the preform
    • B29C49/0691—Using combined techniques for making the preform using sheet like material, e.g. sheet blow-moulding from joined sheets
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/28—Blow-moulding apparatus
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/12—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor of articles having inserts or reinforcements
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/266—Auxiliary operations after the thermoforming operation
    • B29C51/267—Two sheets being thermoformed in separate mould parts and joined together while still in 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
    • B29C66/01—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
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • 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
    • B29C66/50—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
    • B29C66/61—Joining from or joining on the inside
    • 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
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81463—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C69/004—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 making articles by joining parts moulded in separate cavities, said parts being in said separate cavities during said joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06905—Using combined techniques for making the preform
    • B29C49/0691—Using combined techniques for making the preform using sheet like material, e.g. sheet blow-moulding from joined sheets
    • B29C49/06914—Using combined techniques for making the preform using sheet like material, e.g. sheet blow-moulding from joined sheets using parallel sheets as a preform
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/02—Combined thermoforming and manufacture of the preform
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • B29C51/105—Twin sheet thermoforming, i.e. deforming two parallel opposing sheets or foils at the same time by using one common mould cavity and without welding them together during thermoforming
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/261—Handling means, e.g. transfer means, feeding means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7234—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer
    • 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
    • B29C66/82—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
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2623/00—Use of polyalkenes or derivatives thereof for preformed parts, e.g. for inserts
    • B29K2623/04—Polymers of ethylene
    • B29K2623/06—PE, i.e. polyethylene
    • B29K2623/0608—PE, i.e. polyethylene characterised by its density
    • B29K2623/065—HDPE, i.e. high density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7172—Fuel tanks, jerry cans

Definitions

  • the present invention relates to an apparatus and a method for manufacturing a hollow molded article such as a fuel tank mounted on an automobile.
  • Automobile fuel tanks contain various parts associated with the tank, such as parts related to valves and pumps, parts that ensure the strength of the fuel tank, and parts that suppress fuel spills.
  • Patent Document 1 As a conventional example of a technique for attaching a built-in component using a manufacturing process of a fuel tank, there is a method described in Patent Document 1.
  • the document includes a step of loading a built-in component into the core, a step of introducing the core between dies in which the parison is pressed in advance, a step of fixing the built-in component to the parison using the core, and taking out the core.
  • a method of manufacturing a fuel tank having a step of closing a die again to form a fuel tank and a step of taking out the fuel tank from the die is described.
  • the core is positioned between the first core stop position where the core is loaded with the built-in component, and between the first core stop position and the die, and the core is preliminarily overheated and inspected.
  • a technique is described in which the core is provided so as to be movable between two core stop positions and a third core stop position that is a position closed by a die.
  • the present invention has been created to solve such problems, and an object of the present invention is to provide a manufacturing apparatus and a manufacturing method of a hollow molded product that can easily control the mold.
  • a manufacturing apparatus for a hollow molded product includes a parison forming station that forms a parison and a pair of moldings on both sides of a center mold that includes a built-in part, sandwiching the parison in order from one end side.
  • a built-in component mounting station for mounting the built-in component on a parison transferred to the mold, closed with a mold, a molding station for molding the hollow molded product by closing the mold, and taking out and transporting the hollow molded product from the mold
  • the center mold is fixedly provided at the built-in component mounting station, and the molding die is provided so as to be capable of reciprocating between the built-in component mounting station and the molding station. It is characterized by.
  • the method for manufacturing a hollow molded product according to the present invention includes a parison loading step of carrying a parison in one direction to both sides of a center mold having a built-in component, and a pair of molds sandwiching the center mold between the parison.
  • the mold can be easily controlled, and the hollow molded product can be controlled with a simple control device. Can be manufactured. Further, since there are fewer movable parts, the mold structure is simplified, the manufacturing cost of the mold is reduced, and the mold maintenance work is simplified.
  • the hollow molded article manufacturing apparatus is provided so as to be reciprocable between the parison forming station and the built-in component mounting station, and grips the parison formed at the parison forming station and holds the center. It comprises a parison loading means for loading to both sides of the mold.
  • the parison can be carried in with a simple structure, and the manufacturing cost of the apparatus can be suppressed.
  • the mold can be easily controlled, and a hollow molded product can be manufactured with a simple control device. Further, since there are fewer movable parts, the mold structure is simplified, the manufacturing cost of the mold is reduced, and the mold maintenance work is simplified.
  • the hollow molded product that is the subject of the present invention is, for example, a blow molded product such as a fuel tank mounted on an automobile.
  • the hollow molded product manufacturing apparatus 1 has a parison forming station S ⁇ b> 1 for forming a parison P in order from one end side, and both sides of a center mold 3 having a built-in component 2.
  • a built-in component mounting station S2 for attaching the built-in component 2 to the parison P transferred to the molding die 4, and molding for closing the molding die 4 and molding the hollow molded product W (FIG. 2)
  • the station S3 and the transfer station S4 that takes out and conveys the hollow molded product W from the mold 4 are arranged in a straight line.
  • parison extrusion device 5 is provided at the parison forming station S1.
  • the parison P extruded from the parison extrusion device 5 is formed as a pair of parisons P (see FIG. 2) each having a substantially flat shape so as to be finally provided between the center mold 3 and the left and right molds 4.
  • the parison extrusion device 5 for example, a general-purpose structure that extrudes the molten resin in a cylindrical shape from an annular resin passage formed between a central mandrel and an outer die can be used.
  • the parison P hanging in a cylindrical shape is divided at the center by providing a cutter or the like directly under the parison extrusion apparatus 5, and each section having a semicircular cross section is respectively separated using a roller or the like. Measures such as drooping in a substantially flat shape are taken.
  • a parison extrusion device 5 having a pair of linear resin passages and extruding the parison P from each resin passage in a flat plate shape from the beginning may be used.
  • the parison P forms a barrier layer made of a material excellent in fuel impermeability, at least an inner thermoplastic resin layer that forms the tank inner surface, and a tank outer surface. It has a multilayer cross-sectional structure sandwiched between outer thermoplastic resin layers.
  • the material of the inner thermoplastic resin layer and the outer thermoplastic resin layer is, for example, PE (high density polyethylene) that is excellent in heat melting property and moldability.
  • a center mold 3 is provided in the built-in component mounting station S2.
  • the center mold 3 is a fixed type. As shown in FIG. 2, the center mold 3 has left and right mating surfaces 3 ⁇ / b> A, and a hollow 6 is provided with a cylinder 6 as an actuator for attaching the built-in component 2 to the parison P.
  • FIG. 2 shows an example in which the built-in component 2 is attached to each of the parisons P on both sides.
  • a clamp mechanism 7 is provided at the tip of the rod of the cylinder 6, and the built-in component 2 is held by the rod of the cylinder 6 by the clamp mechanism 7. A detailed description of the clamp mechanism 7 will be omitted because it departs from the spirit of the present invention.
  • the parison loading means 8 for loading up to is provided.
  • the parison loading means 8 includes, for example, a linear guide rail 9 that is hung between the parison forming station S1 and the built-in component mounting station S2 at a position above the center mold 3, and a parison that travels on the guide rail 9.
  • the parison transport device 10 includes a pair of gripping mechanisms 11 that grip the upper part of each parison P as shown in FIG.
  • a cutter (not shown) divides the parison P up and down at a position above the gripping portion of the gripping mechanism 11.
  • the parison transport device 10 holds the divided lower parison P and carries it to both sides of the center mold 3.
  • the molding station S ⁇ b> 3 is an area where the mold 4 is closed and the hollow molded product W is molded.
  • the forming die 4 is provided so as to reciprocate linearly between the built-in component mounting station S2 and the forming station S3 along a guide rail (not shown).
  • Reference numeral 12 denotes a base that moves along the guide rail (not shown), and reference numeral 13 denotes a frame that supports the mold 4.
  • Transport station S4 The transport station S4 is provided with a molded product transport means 14 for taking out and transporting the hollow molded product W from the mold 4.
  • the molded article conveying means 14 includes, for example, a linear guide rail 15 that is hung between the molding station S3 and the conveying station S4 at a position above the molding die 4, and a molded article conveyance that travels on the guide rail 15.
  • Device 16 The molded product conveying device 16 includes a gripping mechanism 17 that grips the upper part of the pinch-off portion protruding from the molding die 4 as shown in FIG.
  • the parison transporting device 10 grips the parison P via the gripping mechanism 11 in a state where the parison P of an amount necessary for forming the hollow molded product W is extruded from the parison extrusion device 5, and the built-in component It is carried in one direction (Q direction) to both sides of the center mold 3 provided with 2 (state shown in FIG. 3B).
  • the mold 4 is also positioned on both sides of the center mold 3 simultaneously with or before and after the parison P is carried.
  • the rod of the cylinder 6 moves forward by a predetermined length, and the base end of the built-in component 2 is pressed against the parison P to be buried by a predetermined depth, so that The built-in component 2 is attached.
  • the clamp of the clamp mechanism 7 is released and the rod of the cylinder 6 is retracted as shown in FIG.
  • Mold transfer process After the built-in component 2 is attached, the mold 4 is opened to the left and right as shown in FIG. 2 (f), and then in the one direction, that is, Q to the molding station S3 (predetermined position) as shown in FIG. Move in the direction.
  • the parison P is molded as a hollow molded product W by closing the molding die 4 and blowing air into the molding station S3.
  • the center mold 3 is loaded with the built-in component 2 for the next hollow molded product W.
  • the loading means for example, the built-in component 2 is automatically loaded into the clamp mechanism 7 in the center mold 3 using a robot arm or the like. If the robot arm is used, the loading time does not take much time, and it can be completed during the molding process even if the inspection time of the loading state by a sensor or the like is included. Of course, in some cases, a method of manually loading the built-in component 2 into the center mold 3 may be used.
  • the manufacturing apparatus 1 includes, in order from one end side, the parison forming station S1 that forms the parison P, and the pair of molds 4 with the parison P sandwiched on both sides of the center mold 3 that includes the built-in component 2.
  • the built-in component mounting station S2 for attaching the built-in component 2 to the parison P transferred to the mold 4 and the molding station S3 for closing the mold 4 to form the hollow molded product W.
  • the center mold 3 is fixed at the built-in component mounting station S2, and the mold 4 can be reciprocated between the built-in component mounting station S2 and the molding station S3. It is the structure provided. According to this structure, the manufacturing method of the hollow molded product W which has the above-mentioned parison carrying-in process, built-in component attaching process, mold moving process, molding process, and conveying process can be constructed, and the following effects are produced.
  • the center die 3 is fixedly provided at the built-in component mounting station S2, and the molding die 4 is provided so as to be able to reciprocate between the built-in component mounting station S2 and the molding station S3.
  • the present invention requires a shorter carry-in path for the parison P compared to this structure. That is, when the center mold 3 can be reciprocated and the mold 4 is fixed, when the center mold 3 is retracted from the mold 4 after the built-in component 2 is attached to the parison P, the center mold 3 is retracted to the transfer station S4 side.
  • the delivery path for the parison P can be a short path from the parison forming station S1 to the built-in component mounting station S2 adjacent thereto. It will be. It is better for the parison P to be exposed to the outside air from the point of temperature management, and according to the present invention, the parison P can be easily temperature-controlled and analyzed.
  • the parison loading means 8 is provided so as to be reciprocated between the parison forming station S1 and the built-in component mounting station S2, and holds the parison P formed at the parison forming station S1 and carries it to both sides of the center mold 3. If it is set as the manufacturing apparatus 1 provided, it will be able to carry in the parison P with a simple structure, and the manufacturing cost of the apparatus can be suppressed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

　製造装置（１）は、一端側から順に、パリソン（Ｐ）を形成するパリソン形成ステーション（Ｓ１）と、内蔵部品（２）を備えたセンター型（３）の両側をパリソン（Ｐ）を挟んで一対の成形型（４）で閉じ、成形型（４）に転写したパリソン（Ｐ）に内蔵部品（２）を取り付ける内蔵部品取付ステーション（Ｓ２）と、成形型（４）を閉じて中空成形品を成形する成形ステーション（Ｓ３）と、成形型（４）から中空成形品を取り出し搬送する搬送ステーション（Ｓ４）と、が並設され、センター型（３）が内蔵部品取付ステーション（Ｓ２）において固定して設けられ、成形型（４）が内蔵部品取付ステーション（Ｓ２）と成形ステーション（Ｓ３）との間で往復動可能に設けられる。

Description

中空成形品の製造装置および製造方法
　本発明は、自動車に搭載される燃料タンク等の中空成形品を製造する装置および方法に関する。
　自動車の燃料タンクには、バルブやポンプに関する部品、燃料タンクの強度を確保する部品、燃料の波立ちを抑制する部品等、タンク付随の各種の部品が内蔵される。これら内蔵部品を燃料タンクの内壁に取り付けるにあたっては、組み付け作業の手間等を考えた場合、完成後の燃料タンクに後付けする方法よりも燃料タンクの製造工程を利用してこの工程内に取り付ける方法を採ることが好ましい。
　燃料タンクの製造工程を利用して内蔵部品を取り付ける技術の従来例として特許文献１に記載の方法が挙げられる。同文献には、コアに内蔵部品を装填する工程と、予めパリソンが押圧されているダイ間にコアを導入する工程と、コアを利用して内蔵部品をパリソンに固定する工程と、コアを取り出してから再度ダイを閉じて燃料タンクを成形する工程と、ダイから燃料タンクを取り出す工程とを有する燃料タンクの製造方法について記載されている。さらに、コアを、コアに内蔵部品を装填する第１のコア停止位置と、第１のコア停止位置とダイとの間に位置し、コアに装填された内蔵部品の予備過熱や検査を行う第２のコア停止位置と、ダイによって閉じられる位置である第３のコア停止位置とにわたり移動可能に設ける技術が記載されている。
　同文献の技術は、パリソンの押出し装置の下方までダイとコアとを移動させてダイとコアとでパリソンを挟んで閉じ、その状態で第３のコア停止位置まで戻って内蔵部品を取り付ける工程を有するものと思われる。
特表２００９－５２５２０４号公報
　特許文献１に記載の技術によれば、コアが往復動するとともにダイもコアの移動方向に沿って往復動する構造となることから、両者の動きを連動して制御する制御装置が必要となり、その制御回路が複雑になりやすいという問題がある。
　本発明は、このような課題を解決するために創作されたものであり、型の制御が簡単となる中空成形品の製造装置および製造方法を提供することを目的としている。
　前記課題を解決するため、本発明に係る中空成形品の製造装置は、一端側から順に、パリソンを形成するパリソン形成ステーションと、内蔵部品を備えたセンター型の両側をパリソンを挟んで一対の成形型で閉じ、該成形型に転写したパリソンに前記内蔵部品を取り付ける内蔵部品取付ステーションと、前記成形型を閉じて中空成形品を成形する成形ステーションと、前記成形型から前記中空成形品を取り出し搬送する搬送ステーションと、が並設され、前記センター型が前記内蔵部品取付ステーションにおいて固定して設けられ、前記成形型が前記内蔵部品取付ステーションと前記成形ステーションとの間で往復動可能に設けられることを特徴とする。
　また、本発明に係る中空成形品の製造方法は、パリソンを、内蔵部品を備えたセンター型の両側まで一方向に搬入するパリソン搬入工程と、前記センター型を前記パリソンを挟んで一対の成形型で閉じ、該成形型に転写したパリソンに前記内蔵部品を取り付ける内蔵部品取付工程と、前記内蔵部品の取り付け後、前記成形型を所定位置まで前記一方向に移動させる成形型移動工程と、前記所定位置において前記成形型を閉じて中空成形品を成形する成形工程と、前記成形型から取り出した前記中空成形品を前記一方向に搬送する搬送工程と、を有することを特徴とする。
　本発明に係る中空成形品の製造装置または製造方法によれば、成形型とセンター型の内で成形型のみを往復動させることから、型の制御が容易となり、簡単な制御装置で中空成形品を製造できる。また、可動部分が少なくなるため、型の構造が簡単となって型の製造コストも抑えられ、型のメンテナンス作業も簡易化される。
　また、本発明に係る中空成形品の製造装置は、前記パリソン形成ステーションと前記内蔵部品取付ステーションとの間で往復動可能に設けられ、前記パリソン形成ステーションで形成されたパリソンを把持して前記センター型の両側まで搬入するパリソン搬入手段を備えることを特徴とする。
　本発明によれば、簡単な構造でパリソンの搬入を行えることとなり、装置の製造コストを抑えることができる。
　本発明によれば、型の制御が容易となり、簡単な制御装置で中空成形品を製造できる。また、可動部分が少なくなるため、型の構造が簡単となって型の製造コストも抑えられ、型のメンテナンス作業も簡易化される。
本発明に係る中空成形品の製造装置の構成を示す側面図である。 （ａ）～（ｆ）は内蔵部品取付工程を示す断面図であり、（ｇ）は成形工程を示す断面図である。 本発明に係る中空成形品の製造装置の動作を示す側面図である。
　本発明の対象となる中空成形品は、例えば自動車に搭載される燃料タンク等のブロー成形品である。図１に示すように、本発明に係る中空成形品の製造装置１は、一端側から順に、パリソンＰを形成するパリソン形成ステーションＳ１と、内蔵部品２を備えたセンター型３の両側をパリソンＰを挟んで一対の成形型４で閉じ、成形型４に転写したパリソンＰに内蔵部品２を取り付ける内蔵部品取付ステーションＳ２と、成形型４を閉じて中空成形品Ｗ（図２）を成形する成形ステーションＳ３と、成形型４から中空成形品Ｗを取り出し搬送する搬送ステーションＳ４とが直線状に並設された構成である。
　「パリソン形成ステーションＳ１」
　パリソン形成ステーションＳ１にはパリソン押出し装置５が設けられる。パリソン押出し装置５から押し出されるパリソンＰは、最終的にセンター型３と左右の成形型４との間に供されるようにそれぞれ略平板状を呈する一対のパリソンＰ（図２参照）として形成される。パリソン押出し装置５としては、例えば、溶融樹脂を中央のマンドレルと外側のダイとの間に形成される環状の樹脂通路からパリソンＰを円筒状に押し出す汎用構造のものを用いることができる。この場合には、パリソン押出し装置５の直下にカッターを設けるなどして円筒状に垂下してくるパリソンＰを中央で分断し、平断面半円状となった各切片をローラ等を用いてそれぞれ略平板状にならして垂下形成させるなどの措置がとられる。環状の樹脂通路ではなく、一対の直線状の樹脂通路を有して、各樹脂通路からパリソンＰを初めから平板状に押し出す構造のパリソン押出し装置５を用いてもよい。
　中空成形品Ｗが自動車の燃料タンクである場合、パリソンＰは、燃料の不透過性に優れた材質からなるバリア層を、少なくとも、タンク内面を形成する内側熱可塑性樹脂層とタンク外面を形成する外側熱可塑性樹脂層とで挟んだ多層断面構造からなる。内側熱可塑性樹脂層および外側熱可塑性樹脂層の材質は、例えば熱溶融性や成形性に優れるＰＥ（高密度ポリエチレン）である。
　「内蔵部品取付ステーションＳ２」
　内蔵部品取付ステーションＳ２にはセンター型３が設けられている。このセンター型３は固定式である。センター型３は、図２に示すように左右に合わせ面３Ａが形成されており、中空の内部にはパリソンＰに内蔵部品２を取り付けるアクチュエータとしてのシリンダ６が備えられる。図２では、両側のパリソンＰのそれぞれに内蔵部品２を取り付ける例を示している。シリンダ６のロッドの先端にはクランプ機構７が備えられ、このクランプ機構７により内蔵部品２がシリンダ６のロッドに保持される。クランプ機構７の詳細な説明は本発明の趣旨から外れるので省略する。
　図１において、パリソン形成ステーションＳ１と内蔵部品取付ステーションＳ２との間には、両ステーション間を往復動可能であって、パリソン形成ステーションＳ１で形成されたパリソンＰを把持してセンター型３の両側まで搬入するパリソン搬入手段８が備えられる。パリソン搬入手段８は、例えば、センター型３よりも上方の位置においてパリソン形成ステーションＳ１と内蔵部品取付ステーションＳ２とに掛けて架設された直線状のガイドレール９と、このガイドレール９を走行するパリソン搬送装置１０とを備える。パリソン搬送装置１０は図２（ａ）に示すように各パリソンＰの上部を把持する一対の把持機構１１を備える。パリソン形成ステーションＳ１においてパリソン押出し装置５から垂下しているパリソンＰを把持機構１１が把持すると、カッター(図示せず)が把持機構１１の把持部よりも上方の部位にてパリソンＰを上下に分断するようになっており、パリソン搬送装置１０は分断された下側のパリソンＰを把持してセンター型３の両側まで搬入する。
　「成形ステーションＳ３」
　図１において、成形ステーションＳ３は成形型４を閉じて中空成形品Ｗを成形するエリアである。成形型４は、敷設されたガイドレール（図示せず）に沿って内蔵部品取付ステーションＳ２と成形ステーションＳ３との間を直線状に往復動可能に設けられる。符号１２は前記図示しないガイドレールに沿って移動する基台を、符号１３は成形型４を支持する架材を示す。
　「搬送ステーションＳ４」
　搬送ステーションＳ４には、成形型４から中空成形品Ｗを取り出し搬送する成形品搬送手段１４が備えられる。成形品搬送手段１４は、例えば、成形型４よりも上方の位置において成形ステーションＳ３と搬送ステーションＳ４とに掛けて架設された直線状のガイドレール１５と、このガイドレール１５を走行する成形品搬送装置１６とを備える。成形品搬送装置１６は、図２（ｇ）に示すように成形型４からはみ出たピンチオフ部の上部を把持する把持機構１７を備える。
　以上の製造装置１を用いた中空成形品Ｗの製造方法を説明する。
　「パリソン搬入工程」
　図３（ａ）において、パリソン押出し装置５から中空成形品Ｗの成形に要する分量のパリソンＰが押し出された状態で、パリソン搬送装置１０は把持機構１１を介してパリソンＰを把持し、内蔵部品２を備えたセンター型３の両側まで一方向（Ｑ方向）に搬入する（図３（ｂ）の状態）。成形型４もパリソンＰの搬入と同時に若しくは前後してセンター型３の両側に位置している。
　「内蔵部品取付工程」
　図２を参照して説明すると、前記パリソン搬入工程によって図２（ａ）に示すようにパリソンＰがセンター型３の両側まで搬入されると、図２（ｂ）に示すように左右の成形型４がパリソンＰを間に挟んでセンター型３を両側から閉じる。成形型４の合わせ面４Ａとセンター型３の合わせ面３ＡとによりパリソンＰの縁部全周を挟むことにより、成形型４の成形面とパリソンＰとで囲まれた空間が密閉されることとなり、この状態で成形型４の成形面側から真空引きしてブローすることにより、図２（ｃ）に示すようにパリソンＰが成形型４の成形面に転写される。次いで図２（ｄ）に示すように、シリンダ６のロッドが所定長さだけ前進し、内蔵部品２の基端がパリソンＰに押し付けられて所定の深さだけ埋設されることにより、パリソンＰに対する内蔵部品２の取り付けがなされる。内蔵部品２の取り付け後、クランプ機構７のクランプが外れて図２（ｅ）に示すようにシリンダ６のロッドが縮退する。
　「成形型移動工程」
　内蔵部品２の取り付け後、成形型４は図２（ｆ）に示すように左右に開いたうえで、図３（ｃ）に示すように成形ステーションＳ３（所定位置）まで前記一方向、すなわちＱ方向に移動する。
　「成形工程」
　次いで、成形ステーションＳ３において図２（ｇ）に示すように成形型４が閉じて内部にエアがブローされることによりパリソンＰが中空成形品Ｗとして成形される。
　なお、この成形工程の間に、例えばセンター型３に次の中空成形品Ｗ用の内蔵部品２が装填される。装填手段としては例えばロボットアーム等を用いて内蔵部品２をセンター型３内のクランプ機構７に自動装填する等である。ロボットアームを用いれば装填時間にさほど時間はかからず、センサ等による装填状態の検査時間を含めても成形工程の間に完了させておくことが可能である。勿論、場合によっては人手により内蔵部品２をセンター型３内に装填する方法を用いてもよい。
　「搬送工程」
　前記成形工程で成形型４が閉じた状態において、成形品搬送装置１６は把持機構１７を介して成形型４からはみ出たピンチオフ部の上部を把持している。したがって、成形型４が左右に開くことにより離型した中空成形品Ｗは、図３（ｄ）に示すようにそのまま把持機構１７に把持された状態で前記一方向、すなわちＱ方向に搬送されて次工程へと送られる。成形型４は再びセンター型３の両側まで移動する。
　以上のように本発明の製造装置１は、一端側から順に、パリソンＰを形成するパリソン形成ステーションＳ１と、内蔵部品２を備えたセンター型３の両側をパリソンＰを挟んで一対の成形型４で閉じ、成形型４に転写したパリソンＰに内蔵部品２を取り付ける内蔵部品取付ステーションＳ２と、成形型４を閉じて中空成形品Ｗを成形する成形ステーションＳ３と、成形型４から中空成形品Ｗを取り出し搬送する搬送ステーションＳ４とが並設され、センター型３が内蔵部品取付ステーションＳ２において固定して設けられ、成形型４が内蔵部品取付ステーションＳ２と成形ステーションＳ３との間で往復動可能に設けられた構成である。この構成によれば、前記したパリソン搬入工程と内蔵部品取付工程と成形型移動工程と成形工程と搬送工程とを有する中空成形品Ｗの製造方法を構築できることとなり、次のような効果が奏される。
　（１）成形型４とセンター型３の内で成形型４のみを往復動させることから、型の制御が容易となり、簡単な制御装置で中空成形品Ｗを製造できる。また、可動部分が少なくなるため、型の構造が簡単となって型の製造コストも抑えられ、型のメンテナンス作業も簡易化される。
　（２）本発明は、センター型３が内蔵部品取付ステーションＳ２において固定して設けられ、成形型４が内蔵部品取付ステーションＳ２と成形ステーションＳ３との間で往復動可能に設けられている。仮にセンター型３を往復動可能とし、成形型４を固定した構造を想定すると、この構造に比して本発明はパリソンＰの搬入経路が短くて済む。
　すなわち、センター型３を往復動可能、成形型４を固定としたとき、内蔵部品２をパリソンＰに取り付けた後にセンター型３を成形型４から退避移動させるにあたっては、搬送ステーションＳ４側に退避させると中空成形品Ｗの搬送スペースと干渉することから、パリソン形成ステーションＳ１側に退避させざるを得ない。そして、センター型３をパリソン形成ステーションＳ１まで退避させるとパリソンＰの押出し工程と内蔵部品２の装填工程の併行ができなくなるので、パリソン形成ステーションＳ１と成形型４との間にセンター型３を退避させることとなる。つまり、パリソン形成ステーションＳ１と成形型４との間にセンター型３の退避スペースを要するレイアウトとなるので、パリソン形成ステーションＳ１から成形型４までのパリソンＰの搬入経路はセンター型３の退避スペースを跨いだ長い経路となる。
　これに対して本発明は、図３（ａ）、（ｂ）から明らかなように、パリソンＰの搬入経路がパリソン形成ステーションＳ１からこれに隣設する内蔵部品取付ステーションＳ２までの短い経路で済むことになる。パリソンＰはその温度管理の点から外気に触れる時間が短いほどよく、本発明によればパリソンＰの温度管理やその解析が行いやすくなる。
　また、パリソン形成ステーションＳ１と内蔵部品取付ステーションＳ２との間で往復動可能に設けられ、パリソン形成ステーションＳ１で形成されたパリソンＰを把持してセンター型３の両側まで搬入するパリソン搬入手段８を備える製造装置１とすれば、簡単な構造でパリソンＰの搬入を行えることとなり、装置の製造コストを抑えることができる。
　以上、本発明の好適な実施形態について説明したが、本発明は図面に記載したものに限られず、その趣旨を逸脱しない範囲で様々な設計変更が可能である。
　１　　　中空成形品の製造装置
　２　　　内蔵部品
　３　　　センター型
　４　　　成形型
　５　　　パリソン押出し装置
　８　　　パリソン搬入手段
１４　　　成形品搬送手段
　Ｐ　　　パリソン
Ｓ１　　　パリソン形成ステーション
Ｓ２　　　内蔵部品取付ステーション
Ｓ３　　　成形ステーション
Ｓ４　　　搬送ステーション
　Ｗ　　　中空成形品

Claims (3)

  1. 　一端側から順に、
    　パリソンを形成するパリソン形成ステーションと、
    　内蔵部品を備えたセンター型の両側をパリソンを挟んで一対の成形型で閉じ、該成形型に転写したパリソンに前記内蔵部品を取り付ける内蔵部品取付ステーションと、
    　前記成形型を閉じて中空成形品を成形する成形ステーションと、
    　前記成形型から前記中空成形品を取り出し搬送する搬送ステーションと、
    　が並設され、
    　前記センター型が前記内蔵部品取付ステーションにおいて固定して設けられ、
    　前記成形型が前記内蔵部品取付ステーションと前記成形ステーションとの間で往復動可能に設けられることを特徴とする中空成形品の製造装置。
  2. 　前記パリソン形成ステーションと前記内蔵部品取付ステーションとの間で往復動可能に設けられ、前記パリソン形成ステーションで形成されたパリソンを把持して前記センター型の両側まで搬入するパリソン搬入手段を備えることを特徴とする請求の範囲第１項に記載の中空成形品の製造装置。
  3. 　パリソンを、内蔵部品を備えたセンター型の両側まで一方向に搬入するパリソン搬入工程と、
    　前記センター型を前記パリソンを挟んで一対の成形型で閉じ、該成形型に転写したパリソンに前記内蔵部品を取り付ける内蔵部品取付工程と、
    　前記内蔵部品の取り付け後、前記成形型を所定位置まで前記一方向に移動させる成形型移動工程と、
    　前記所定位置において前記成形型を閉じて中空成形品を成形する成形工程と、
    　前記成形型から取り出した前記中空成形品を前記一方向に搬送する搬送工程と、
    　を有することを特徴とする中空成形品の製造方法。
PCT/JP2012/056065 2011-03-11 2012-03-09 中空成形品の製造装置および製造方法 WO2012124618A1 (ja)

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