JPS62202712A - Method of extruding parison and its device - Google Patents

Method of extruding parison and its device

Info

Publication number
JPS62202712A
JPS62202712A JP60215957A JP21595785A JPS62202712A JP S62202712 A JPS62202712 A JP S62202712A JP 60215957 A JP60215957 A JP 60215957A JP 21595785 A JP21595785 A JP 21595785A JP S62202712 A JPS62202712 A JP S62202712A
Authority
JP
Japan
Prior art keywords
extrusion
speed
parison
vacuum cylinder
die
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.)
Pending
Application number
JP60215957A
Other languages
Japanese (ja)
Other versions
JPH0460405B2 (en
Inventor
Shuji Higo
Original Assignee
Kyoraku Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyoraku Co Ltd filed Critical Kyoraku Co Ltd
Priority to JP60215957A priority Critical patent/JPH0460405B2/ja
Publication of JPS62202712A publication Critical patent/JPS62202712A/en
Publication of JPH0460405B2 publication Critical patent/JPH0460405B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion 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
    • B29C48/09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • B29C48/32Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • B29C48/32Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/325Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/388Plasticisers, homogenisers or feeders comprising two or more stages using a screw extruder and a ram or piston
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/475Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pistons, accumulators or press rams
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/92Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92009Measured parameter
    • B29C2948/92076Position, e.g. linear or angular
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92009Measured parameter
    • B29C2948/92085Velocity
    • B29C2948/92104Flow or feed rate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92323Location or phase of measurement
    • B29C2948/92361Extrusion unit
    • B29C2948/92409Die; Nozzle zone
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92323Location or phase of measurement
    • B29C2948/92466Auxiliary unit, e.g. for external melt filtering, re-combining or transfer between units
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/9258Velocity
    • B29C2948/926Flow or feed rate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92609Dimensions
    • B29C2948/92647Thickness
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92876Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92904Die; Nozzle zone

Abstract

PURPOSE:To enable the parison to obtain a precise thickness variation corresponding to a preset profile, by controlling an extrusion speed of resin in the vicinity of an outlet of a die at the time of extrusion of parison by changing a gap at the outlet of the die. CONSTITUTION:Synthetic resin loaded within an extrusion machine 4 is supplied through pressurization by a screw 8, melted through heating and accumulated within a chamber 2a. A vacuum cylinder rod 9 is moved backward according to accumulation and applied to a controller 15 by a position detector 17. When a signal is produced according to a preset profile, a valve 18 is actuated and a sliding speed of the vacuum cylinder 9 becomes fast at a position where a value of the preset profile is high, on the inside of the controller 15. When an extrusion speed of the synthetic resin is made fast by making the sliding speed of the vacuum cylinder rod 9 fast along with making the sliding speed of the vacuum cylinder rod 9 fast along with windening of a space between slits of a die 5 and core 6 by actuating a servocylinder 3 at the time of extrusion of a thick part, the diameter of parison can be made larger. The extrusion speed is measured by an extrusion speed detecting device 20 and a hydraulic cylinder 10 is controlled by applying feed back of the value to a controller 15.
JP60215957A 1985-09-28 1985-09-28 Expired - Lifetime JPH0460405B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60215957A JPH0460405B2 (en) 1985-09-28 1985-09-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60215957A JPH0460405B2 (en) 1985-09-28 1985-09-28

Publications (2)

Publication Number Publication Date
JPS62202712A true JPS62202712A (en) 1987-09-07
JPH0460405B2 JPH0460405B2 (en) 1992-09-28

Family

ID=16681042

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60215957A Expired - Lifetime JPH0460405B2 (en) 1985-09-28 1985-09-28

Country Status (1)

Country Link
JP (1) JPH0460405B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04361018A (en) * 1991-06-07 1992-12-14 Ube Ind Ltd Blow molding machine
JPH1110721A (en) * 1997-06-25 1999-01-19 Kishimoto Akira Method and apparatus for controlling thickness of parison
JP2006205746A (en) * 2006-05-11 2006-08-10 Tahara:Kk Blow molding method
JP2006519719A (en) * 2003-03-04 2006-08-31 デイビス − スタンダード コーポレイション Controller and method for bypassing a pressure reducing valve in a blow molding machine
US10035290B2 (en) 2012-12-11 2018-07-31 Kautex Maschinenbau Gmbh Extrusion blow-molding method and device for the performance thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5842437A (en) * 1981-09-08 1983-03-11 Ishikawajima Harima Heavy Ind Co Ltd Method of controlling distribution of sectional area of parison for blow molding

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5842437A (en) * 1981-09-08 1983-03-11 Ishikawajima Harima Heavy Ind Co Ltd Method of controlling distribution of sectional area of parison for blow molding

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04361018A (en) * 1991-06-07 1992-12-14 Ube Ind Ltd Blow molding machine
JPH1110721A (en) * 1997-06-25 1999-01-19 Kishimoto Akira Method and apparatus for controlling thickness of parison
JP2006519719A (en) * 2003-03-04 2006-08-31 デイビス − スタンダード コーポレイション Controller and method for bypassing a pressure reducing valve in a blow molding machine
KR101132511B1 (en) 2003-03-04 2012-04-03 데이비스-스탠다드, 엘엘씨 A controller for bypassing a presure-reducing valve in a blow-molding machine and method thereof
JP2006205746A (en) * 2006-05-11 2006-08-10 Tahara:Kk Blow molding method
JP4511492B2 (en) * 2006-05-11 2010-07-28 株式会社タハラ Blow molding method
US10035290B2 (en) 2012-12-11 2018-07-31 Kautex Maschinenbau Gmbh Extrusion blow-molding method and device for the performance thereof

Also Published As

Publication number Publication date
JPH0460405B2 (en) 1992-09-28

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