GB1496470A - Injection moulding machine method for viscosity regulation therein and articles produced thereby - Google Patents

Injection moulding machine method for viscosity regulation therein and articles produced thereby

Info

Publication number
GB1496470A
GB1496470A GB3830976A GB3830976A GB1496470A GB 1496470 A GB1496470 A GB 1496470A GB 3830976 A GB3830976 A GB 3830976A GB 3830976 A GB3830976 A GB 3830976A GB 1496470 A GB1496470 A GB 1496470A
Authority
GB
United Kingdom
Prior art keywords
injection moulding
moulding machine
viscosity
articles produced
machine method
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
Application number
GB3830976A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1496470A publication Critical patent/GB1496470A/en
Expired 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/7646—Measuring, controlling or regulating viscosity

Landscapes

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

Abstract

The screw ram (2) of the injection moulding machine is moved during the filling phase with controlled velocity by means of a hydraulic piston (6). The hydraulic pressure resulting in the cylinder space (10) is a measure for the viscosity of the melt. This actual value is compared with a setpoint value in a controller (13) and the deviation is used to correct the back pressure for the succeeding operating cycle. The viscosity of the melt can thereby be accurately and rapidly controlled, increasing the quality of the injection moulded parts. <IMAGE>
GB3830976A 1975-09-17 1976-09-16 Injection moulding machine method for viscosity regulation therein and articles produced thereby Expired GB1496470A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752541329 DE2541329A1 (en) 1975-09-17 1975-09-17 INJECTION MOLDING MACHINE WITH VISCOSITY CONTROL

Publications (1)

Publication Number Publication Date
GB1496470A true GB1496470A (en) 1977-12-30

Family

ID=5956628

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3830976A Expired GB1496470A (en) 1975-09-17 1976-09-16 Injection moulding machine method for viscosity regulation therein and articles produced thereby

Country Status (6)

Country Link
CH (1) CH612878A5 (en)
DE (1) DE2541329A1 (en)
FR (1) FR2324441A1 (en)
GB (1) GB1496470A (en)
IT (1) IT1070723B (en)
NL (1) NL7610322A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150197054A1 (en) * 2014-01-16 2015-07-16 Plastic Technologies, Inc. Predicting a characteristic of an injection molded article

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2019608B (en) * 1978-04-13 1982-10-20 Toshiba Machine Co Ltd Controlling injection moulding
ATE80088T1 (en) * 1984-06-25 1992-09-15 Toshiba Machine Co Ltd INJECTION MOLDING MACHINES AND THEIR CONTROL METHODS.
FR2750918B1 (en) * 1996-07-09 1999-04-09 Transvalor Sa CONTROL AND REGULATION OF AN INJECTION MOLDING PRESS
DE102022206727A1 (en) 2022-06-30 2024-01-04 Baden-Württemberg Stiftung Ggmbh Method and device for process monitoring during the production of a finished part from a hot-curing material in a primary molding process

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1152250B (en) * 1961-07-15 1963-08-01 Ankerwerk Gebr Goller Process for the control and monitoring of screw injection molding machines for plastics and equipment for carrying out this process
US3642402A (en) * 1970-03-10 1972-02-15 Pennwalt Corp Injection molding process control
US3924840A (en) * 1972-09-18 1975-12-09 Gen Electric Viscosity control for a plastic molding machine
US3893792A (en) * 1973-04-06 1975-07-08 Bbf Group Inc Controller for injection molding machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150197054A1 (en) * 2014-01-16 2015-07-16 Plastic Technologies, Inc. Predicting a characteristic of an injection molded article

Also Published As

Publication number Publication date
NL7610322A (en) 1977-03-21
FR2324441A1 (en) 1977-04-15
IT1070723B (en) 1985-04-02
CH612878A5 (en) 1979-08-31
DE2541329A1 (en) 1977-03-31

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee