FR2264464A7 - Indicating speed variation of machine elements - permanent magnet assembly indicates change of piston speed on pressure die casting machine - Google Patents

Indicating speed variation of machine elements - permanent magnet assembly indicates change of piston speed on pressure die casting machine

Info

Publication number
FR2264464A7
FR2264464A7 FR7504254A FR7504254A FR2264464A7 FR 2264464 A7 FR2264464 A7 FR 2264464A7 FR 7504254 A FR7504254 A FR 7504254A FR 7504254 A FR7504254 A FR 7504254A FR 2264464 A7 FR2264464 A7 FR 2264464A7
Authority
FR
France
Prior art keywords
die casting
permanent magnet
pressure die
machine
piston
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
FR7504254A
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.)
Idra Pressen GmbH
Original Assignee
Idra Pressen 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 Idra Pressen GmbH filed Critical Idra Pressen GmbH
Application granted granted Critical
Publication of FR2264464A7 publication Critical patent/FR2264464A7/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/11—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by inductive pick-up

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

Device which reacts to variations in the speed of machine elements, esp. for pressure die casting machines. The novelty is that the device consists of a coil joined to a permanent magnet, a guide-tube passing through the coil, and a magnet core which can slide through the tube. The coil is pref. tubular or annular, located coaxially w.r.t. the tube and connected by its end surface to a ring magnet coaxial with the tube. The magnet core is pref. a permanent magnet and the assembly is pref. housed in a common casing of light metal, esp. aluminium. An inexpensive device suitable, e.g. for mounting on the piston-rod of the injection piston in a pressure die casting machine so that a signal is generated when the piston speed alters.
FR7504254A 1974-03-11 1975-02-11 Indicating speed variation of machine elements - permanent magnet assembly indicates change of piston speed on pressure die casting machine Expired FR2264464A7 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE7408367 1974-03-11

Publications (1)

Publication Number Publication Date
FR2264464A7 true FR2264464A7 (en) 1975-10-10

Family

ID=6644135

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7504254A Expired FR2264464A7 (en) 1974-03-11 1975-02-11 Indicating speed variation of machine elements - permanent magnet assembly indicates change of piston speed on pressure die casting machine

Country Status (1)

Country Link
FR (1) FR2264464A7 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0356482A1 (en) * 1988-02-02 1990-03-07 Antonio Nicholas F D A sensor and transducer apparatus.
DE4418292A1 (en) * 1994-05-26 1995-11-30 Telefunken Microelectron Inductive movement sensor for irons
US5589639A (en) * 1986-02-28 1996-12-31 D'antonio; Nicholas F. Sensor and transducer apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5589639A (en) * 1986-02-28 1996-12-31 D'antonio; Nicholas F. Sensor and transducer apparatus
EP0356482A1 (en) * 1988-02-02 1990-03-07 Antonio Nicholas F D A sensor and transducer apparatus.
EP0356482A4 (en) * 1988-02-02 1992-08-05 Antonio Nicholas F D A sensor and transducer apparatus
DE4418292A1 (en) * 1994-05-26 1995-11-30 Telefunken Microelectron Inductive movement sensor for irons

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Legal Events

Date Code Title Description
ST Notification of lapse