GB1398275A - Injection moulding machines - Google Patents

Injection moulding machines

Info

Publication number
GB1398275A
GB1398275A GB6022271A GB6022271A GB1398275A GB 1398275 A GB1398275 A GB 1398275A GB 6022271 A GB6022271 A GB 6022271A GB 6022271 A GB6022271 A GB 6022271A GB 1398275 A GB1398275 A GB 1398275A
Authority
GB
United Kingdom
Prior art keywords
motor
injection
torque
speed
preset
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
GB6022271A
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.)
British Industrial Plastics Ltd
Original Assignee
British Industrial Plastics 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 British Industrial Plastics Ltd filed Critical British Industrial Plastics Ltd
Priority to GB6022271A priority Critical patent/GB1398275A/en
Priority to ES410117A priority patent/ES410117A1/en
Priority to FR7246422A priority patent/FR2166088B1/fr
Priority to CH1889072A priority patent/CH569573A5/xx
Priority to DE19722263797 priority patent/DE2263797A1/en
Priority to DD16864672A priority patent/DD102109A5/xx
Priority to AT1110972A priority patent/ATA1110972A/en
Priority to IT5510172A priority patent/IT974892B/en
Priority to JP417273A priority patent/JPS4873456A/ja
Priority to NL7217722A priority patent/NL7217722A/xx
Priority to US482029A priority patent/US3911677A/en
Publication of GB1398275A publication Critical patent/GB1398275A/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

Landscapes

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

Abstract

1398275 Controlling injection moulding BRITISH INDUSTRIAL PLASTICS Ltd 28 Dec 1972 [28 Dec 1971] 60222/71 Heading B5A An hydraulically operated injection moulding machine has at least one hydraulic pump driven by an electric motor, the speed and torque of which are controlled (e.g. by preset digital switches) to provide the desired operating speeds and pressures (e.g. for two-speed mould closing) and also to reduce power consumption, unwanted heating of the hydraulic oil and flashing due to excess injection presssure. Signals from a tachogenerator are used to maintain a preset motor speed and signals from pressure transducers are used to vary the torque of the motor to maintain a preset ram pressure. The armature current of the (D.C.) motor is measured for controlling the motor torque. Limit switches also control the motor to initiate different stages of the injection cycle, and a second, higher power, pump is connected to the same motor for fast injection, the first pump providing mould opening and closing pressures.
GB6022271A 1971-12-28 1971-12-28 Injection moulding machines Expired GB1398275A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
GB6022271A GB1398275A (en) 1971-12-28 1971-12-28 Injection moulding machines
ES410117A ES410117A1 (en) 1971-12-28 1972-12-20 Injection moulding machines
FR7246422A FR2166088B1 (en) 1971-12-28 1972-12-27
CH1889072A CH569573A5 (en) 1971-12-28 1972-12-27
DE19722263797 DE2263797A1 (en) 1971-12-28 1972-12-28 INJECTION MOLDING MACHINE
DD16864672A DD102109A5 (en) 1971-12-28 1972-12-28
AT1110972A ATA1110972A (en) 1971-12-28 1972-12-28 INJECTION MOLDING MACHINE
IT5510172A IT974892B (en) 1971-12-28 1972-12-28 IMPROVEMENT IN MACHINES FOR INJECTION MOLDING OF PLASTIC MATERIALS
JP417273A JPS4873456A (en) 1971-12-28 1972-12-28
NL7217722A NL7217722A (en) 1971-12-28 1972-12-28
US482029A US3911677A (en) 1971-12-28 1974-06-21 Injection moulding machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6022271A GB1398275A (en) 1971-12-28 1971-12-28 Injection moulding machines

Publications (1)

Publication Number Publication Date
GB1398275A true GB1398275A (en) 1975-06-18

Family

ID=10485238

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6022271A Expired GB1398275A (en) 1971-12-28 1971-12-28 Injection moulding machines

Country Status (9)

Country Link
JP (1) JPS4873456A (en)
AT (1) ATA1110972A (en)
CH (1) CH569573A5 (en)
DD (1) DD102109A5 (en)
DE (1) DE2263797A1 (en)
ES (1) ES410117A1 (en)
FR (1) FR2166088B1 (en)
GB (1) GB1398275A (en)
NL (1) NL7217722A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2560491C2 (en) * 1975-06-28 1987-10-15 Karl 7298 Lossburg De Hehl
DE2528963C2 (en) 1975-06-28 1983-11-03 Karl 7298 Loßburg Hehl Control device for the hydraulic circuit of an injection molding machine
DE3119095C2 (en) * 1981-05-14 1983-09-01 Karl 7298 Loßburg Hehl Control device for the hydraulic circuit of a plastic injection molding machine
AT394825B (en) * 1989-03-21 1992-06-25 Engel Gmbh Maschbau Control device for hydraulically actuable machine parts of an injection-moulding machine
DE19524395C1 (en) * 1995-07-04 1996-10-10 Battenfeld Gmbh Hydraulic operating system for plastic injection processing machines

Also Published As

Publication number Publication date
DE2263797A1 (en) 1973-07-12
JPS4873456A (en) 1973-10-03
ATA1110972A (en) 1976-01-15
FR2166088A1 (en) 1973-08-10
NL7217722A (en) 1973-07-02
FR2166088B1 (en) 1976-04-23
DD102109A5 (en) 1973-12-05
CH569573A5 (en) 1975-11-28
ES410117A1 (en) 1975-12-16

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees