GB964314A - Detecting double sheets in sheet metal feeding - Google Patents

Detecting double sheets in sheet metal feeding

Info

Publication number
GB964314A
GB964314A GB2587263A GB2587263A GB964314A GB 964314 A GB964314 A GB 964314A GB 2587263 A GB2587263 A GB 2587263A GB 2587263 A GB2587263 A GB 2587263A GB 964314 A GB964314 A GB 964314A
Authority
GB
United Kingdom
Prior art keywords
magnet
spring
housing
sheets
superposed sheets
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
GB2587263A
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.)
Beteiligungs und Patentverwaltungs GmbH
Original Assignee
Beteiligungs und Patentverwaltungs 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 Beteiligungs und Patentverwaltungs GmbH filed Critical Beteiligungs und Patentverwaltungs GmbH
Publication of GB964314A publication Critical patent/GB964314A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/025—Fault detection, e.g. misfeed detection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D55/00—Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

964,314. Feeding sheets. BETEILGUNGS UND PATENTVERWALTUNGSGESELLSCHAFT m.b.H. June 28, 1963 [June 30, 1962], No. 25872/63. Heading B6B. Apparatus for detecting the presence of two superposed sheets of ferromagnetic material, which may have been separated from a pile, passing over a table &c. 1, comprises a magnet 3 which is normally held by a spring 5 at a short distance below the upper surface of the table, but will move upwardly towards the said surface when the magnetic field is increased by the presence of two superposed sheets 2, and so initiates a switching pulse. The magnet 3 is U- shaped or M-shaped, is in a non-magnetic housing 4, and is urged by the spring 5 against a microswitch 6 which acts as a stop. The housing 4 has a screw connection 7 with a housing 8 for the switch 6, so that the distance between the magnet 3 and a sheet 2 can be adjusted: this adjustment, and the initial setting of the tension of the spring 5, enables the magnet to be set so that it only moves upwardly when two or more superposed sheets 2 pass thereover. On the upward movement of the magnet 3, the switch 6 is opened to initiate a warning signal, to stop the processing machine, or to actuate a device for the ejection of the second sheet.
GB2587263A 1962-06-30 1963-06-28 Detecting double sheets in sheet metal feeding Expired GB964314A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1962B0067866 DE1296089B (en) 1962-06-30 1962-06-30 Device for separating ferromagnetic double sheets

Publications (1)

Publication Number Publication Date
GB964314A true GB964314A (en) 1964-07-22

Family

ID=6975673

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2587263A Expired GB964314A (en) 1962-06-30 1963-06-28 Detecting double sheets in sheet metal feeding

Country Status (2)

Country Link
DE (1) DE1296089B (en)
GB (1) GB964314A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0170706A1 (en) * 1982-12-28 1986-02-12 Seiei Kohsan Co.,Ltd. A frame separator
US11020927B2 (en) 2017-06-07 2021-06-01 Aida Engineering, Ltd. Double blank detecting device for press machine and die protecting device for press machine
CN114871302A (en) * 2022-06-07 2022-08-09 江铃汽车股份有限公司 Automatic change stamping die's elastic induction device and automatic stamping die

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2579922A (en) * 1945-12-21 1951-12-25 Continental Can Co Double sheet detector
DE1755356U (en) * 1957-05-22 1957-10-31 Ludwig Hildebrand SWITCH WITH PERMANENT MAGNET FOR THE AUTOMATION OF A MODEL RAILWAY.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0170706A1 (en) * 1982-12-28 1986-02-12 Seiei Kohsan Co.,Ltd. A frame separator
US11020927B2 (en) 2017-06-07 2021-06-01 Aida Engineering, Ltd. Double blank detecting device for press machine and die protecting device for press machine
CN114871302A (en) * 2022-06-07 2022-08-09 江铃汽车股份有限公司 Automatic change stamping die's elastic induction device and automatic stamping die

Also Published As

Publication number Publication date
DE1296089B (en) 1969-05-22

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