FR2083279A5 - Quick acting hydraulic press - for injection machines - Google Patents

Quick acting hydraulic press - for injection machines

Info

Publication number
FR2083279A5
FR2083279A5 FR7111225A FR7111225A FR2083279A5 FR 2083279 A5 FR2083279 A5 FR 2083279A5 FR 7111225 A FR7111225 A FR 7111225A FR 7111225 A FR7111225 A FR 7111225A FR 2083279 A5 FR2083279 A5 FR 2083279A5
Authority
FR
France
Prior art keywords
press
piston
closure
encountered
hydraulic pressure
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
FR7111225A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7111225A priority Critical patent/FR2083279A5/en
Application granted granted Critical
Publication of FR2083279A5 publication Critical patent/FR2083279A5/en
Priority to ES401114A priority patent/ES401114A1/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
    • B29C45/64—Mould opening, closing or clamping devices
    • B29C45/67—Mould opening, closing or clamping devices hydraulic
    • B29C45/6764—Mould opening, closing or clamping devices hydraulic using hydraulically connectable chambers of the clamping cylinder during the mould opening and closing movement
    • B29C45/6771—Mould opening, closing or clamping devices hydraulic using hydraulically connectable chambers of the clamping cylinder during the mould opening and closing movement the connection being provided within the clamping cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/204—Control means for piston speed or actuating force without external control, e.g. control valve inside the piston

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Press Drives And Press Lines (AREA)
  • Actuator (AREA)

Abstract

The principal piston rapidly closes the press without displacing large volumes of oil by maintaining passages in the piston open. When during closure a higher resistance is encountered the passages are closed and hydraulic pressure acts over the full area of the cylinder. The valve attached to the principal piston is held open during the rapid closure of the press by means of a calibrated spring. When resistance is encountered at complete closure compression of the spring closes the valve and the total hydraulic pressure acts on the piston. The jack may be supplied with fluid under a permanent calculated pressure. Opt. the fluid may be gaseous, in which case it is stored in a reservoir on opening the press. The press permits a great reduction in the volume of oil displaced during closure and a consequent economy in pipework and pump capacity.
FR7111225A 1971-03-30 1971-03-30 Quick acting hydraulic press - for injection machines Expired FR2083279A5 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7111225A FR2083279A5 (en) 1971-03-30 1971-03-30 Quick acting hydraulic press - for injection machines
ES401114A ES401114A1 (en) 1971-03-30 1972-03-23 Improvements in the construction of rapid marking hydraulic presses. (Machine-translation by Google Translate, not legally binding)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7111225A FR2083279A5 (en) 1971-03-30 1971-03-30 Quick acting hydraulic press - for injection machines

Publications (1)

Publication Number Publication Date
FR2083279A5 true FR2083279A5 (en) 1971-12-10

Family

ID=9074447

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7111225A Expired FR2083279A5 (en) 1971-03-30 1971-03-30 Quick acting hydraulic press - for injection machines

Country Status (2)

Country Link
ES (1) ES401114A1 (en)
FR (1) FR2083279A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106003784A (en) * 2016-07-31 2016-10-12 江阴市瑞丰液压机械有限公司 Hydraulic machine of cylindrical structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106003784A (en) * 2016-07-31 2016-10-12 江阴市瑞丰液压机械有限公司 Hydraulic machine of cylindrical structure
CN106003784B (en) * 2016-07-31 2017-07-04 江阴市瑞丰液压机械有限公司 The hydraulic press of tubular construction

Also Published As

Publication number Publication date
ES401114A1 (en) 1975-02-01

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Legal Events

Date Code Title Description
ST Notification of lapse