JPS5677120A - Parison thickness controller for continuous extrusion molding - Google Patents

Parison thickness controller for continuous extrusion molding

Info

Publication number
JPS5677120A
JPS5677120A JP15358879A JP15358879A JPS5677120A JP S5677120 A JPS5677120 A JP S5677120A JP 15358879 A JP15358879 A JP 15358879A JP 15358879 A JP15358879 A JP 15358879A JP S5677120 A JPS5677120 A JP S5677120A
Authority
JP
Japan
Prior art keywords
setting
thickness
output
parison
comparator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP15358879A
Other languages
Japanese (ja)
Other versions
JPS5727832B2 (en
Inventor
Keiji Fukuhara
Takashi Aida
Tomoshiro Takahashi
Shigeharu Hagiwara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Steel Works Ltd
Original Assignee
Japan Steel Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Japan Steel Works Ltd filed Critical Japan Steel Works Ltd
Priority to JP15358879A priority Critical patent/JPS5677120A/en
Publication of JPS5677120A publication Critical patent/JPS5677120A/en
Publication of JPS5727832B2 publication Critical patent/JPS5727832B2/ja
Granted 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/9218—Weight
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92609—Dimensions
    • B29C2948/92647—Thickness
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92904—Die; Nozzle zone
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92961—Auxiliary unit, e.g. for external melt filtering, re-combining or transfer between units
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels

Abstract

PURPOSE:To obtain a smooth parison with complicated setting of thickness limited in the number of setting by enabling separate switching in the setting of thickness by a parison programmer by means of a solenoid valve and a throttle valve to be used for driving a cylinder connected to the core. CONSTITUTION:A starting signal from a control panel 15 releases the self-holding of a cycle end hold comparator 11 to actuate an integrator 2 which integrates the setting output of a cycle time setting device 1 and outputs a cycle signal voltage. A thickness setting selection comparator 5 discriminates the state of the output and turns an analog SW7 on at the section corresponding to thickness setting devices 6a-6e. A certain voltage set with a weight control 9 is added to the output of an attenuator 8 with an adder 21 and the result, as a parison thickness setting signal is subtracted by the output of a linear potentiometer for detecting the core position with a subtractor 22. Depending on the polarity of the result, a comparator 10 for selecting the solenoid valve is actuated.
JP15358879A 1979-11-29 1979-11-29 Parison thickness controller for continuous extrusion molding Granted JPS5677120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15358879A JPS5677120A (en) 1979-11-29 1979-11-29 Parison thickness controller for continuous extrusion molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15358879A JPS5677120A (en) 1979-11-29 1979-11-29 Parison thickness controller for continuous extrusion molding

Publications (2)

Publication Number Publication Date
JPS5677120A true JPS5677120A (en) 1981-06-25
JPS5727832B2 JPS5727832B2 (en) 1982-06-12

Family

ID=15565764

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15358879A Granted JPS5677120A (en) 1979-11-29 1979-11-29 Parison thickness controller for continuous extrusion molding

Country Status (1)

Country Link
JP (1) JPS5677120A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4563147A (en) * 1980-08-20 1986-01-07 Battenfeld Maschinenfabrik Gmbh Apparatus for extruding a tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4563147A (en) * 1980-08-20 1986-01-07 Battenfeld Maschinenfabrik Gmbh Apparatus for extruding a tube

Also Published As

Publication number Publication date
JPS5727832B2 (en) 1982-06-12

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