JPS56144139A - Pressure controlling device for vent type two-stage extrusion machine - Google Patents

Pressure controlling device for vent type two-stage extrusion machine

Info

Publication number
JPS56144139A
JPS56144139A JP4737180A JP4737180A JPS56144139A JP S56144139 A JPS56144139 A JP S56144139A JP 4737180 A JP4737180 A JP 4737180A JP 4737180 A JP4737180 A JP 4737180A JP S56144139 A JPS56144139 A JP S56144139A
Authority
JP
Japan
Prior art keywords
pressure
extrusion machine
resin pressure
signal
resin
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
JP4737180A
Other languages
Japanese (ja)
Other versions
JPS6128501B2 (en
Inventor
Hiroharu Kato
Saburo Matsubayashi
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP4737180A priority Critical patent/JPS56144139A/en
Publication of JPS56144139A publication Critical patent/JPS56144139A/en
Publication of JPS6128501B2 publication Critical patent/JPS6128501B2/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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/38—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in the same barrel
    • 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
    • B29C2948/92019—Pressure
    • 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
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/9238—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • 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
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/92419—Degassing unit
    • 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
    • B29C2948/92514—Pressure
    • 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
    • B29C2948/9258—Velocity
    • 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
    • B29C2948/9258—Velocity
    • B29C2948/926—Flow or feed rate
    • 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
    • B29C2948/92952—Drive section, e.g. gearbox, motor or drive fluids
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To prevent vent up in the captioned extrusion machine by a system wherein a resin pressure is detected between a vent hole and a filter and the pressure in a connecting pipe arrranged between first and second extrusion mahines is controlled in accordance with the amount of fluctuation in the resin pressure. CONSTITUTION:A resin pressure detector 16 is provided at the downstream side of a vent hole 5 for the second stage extrusion machine 3 and a signal obtained by detecting the amount of fluctuation in the resin pressure is sent to a comparator 20 through a low-pass filter 17, subsequently, a difference signal obtained by comparing the signal with a set value from a pressure setter 18 is sent to the comparator 11 through an amplifier 19. Next, this signal is compared with a pressure signal in the connecting pipe 2 which is obtained by detecting with the resin pressure detector 9 and the difference signal thereof is utilized to control the first motor 8 which controls, in turn, the resin pressure in the connecting pipe 2 by increasing or decreasing the resin extrusion amount of the first stage extrusion machine.
JP4737180A 1980-04-10 1980-04-10 Pressure controlling device for vent type two-stage extrusion machine Granted JPS56144139A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4737180A JPS56144139A (en) 1980-04-10 1980-04-10 Pressure controlling device for vent type two-stage extrusion machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4737180A JPS56144139A (en) 1980-04-10 1980-04-10 Pressure controlling device for vent type two-stage extrusion machine

Publications (2)

Publication Number Publication Date
JPS56144139A true JPS56144139A (en) 1981-11-10
JPS6128501B2 JPS6128501B2 (en) 1986-06-30

Family

ID=12773239

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4737180A Granted JPS56144139A (en) 1980-04-10 1980-04-10 Pressure controlling device for vent type two-stage extrusion machine

Country Status (1)

Country Link
JP (1) JPS56144139A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4902455A (en) * 1987-12-24 1990-02-20 Hermann Berstorff Maschinenbau Gmbh Method and extrusion apparatus for degassing thermoplastic plastics material melts
JPH0323922A (en) * 1989-06-20 1991-01-31 Mitsubishi Heavy Ind Ltd Control method for series two-stage extruder
JP2011000854A (en) * 2009-06-22 2011-01-06 Japan Steel Works Ltd:The Vent-up detecting method of extruder equipped with vent, and extruder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49113854A (en) * 1973-03-05 1974-10-30

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49113854A (en) * 1973-03-05 1974-10-30

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4902455A (en) * 1987-12-24 1990-02-20 Hermann Berstorff Maschinenbau Gmbh Method and extrusion apparatus for degassing thermoplastic plastics material melts
JPH0323922A (en) * 1989-06-20 1991-01-31 Mitsubishi Heavy Ind Ltd Control method for series two-stage extruder
JP2011000854A (en) * 2009-06-22 2011-01-06 Japan Steel Works Ltd:The Vent-up detecting method of extruder equipped with vent, and extruder

Also Published As

Publication number Publication date
JPS6128501B2 (en) 1986-06-30

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