DE19745584A1 - Method of separating non-ferromagnetic plates from stack for feeding into press - Google Patents

Method of separating non-ferromagnetic plates from stack for feeding into press

Info

Publication number
DE19745584A1
DE19745584A1 DE1997145584 DE19745584A DE19745584A1 DE 19745584 A1 DE19745584 A1 DE 19745584A1 DE 1997145584 DE1997145584 DE 1997145584 DE 19745584 A DE19745584 A DE 19745584A DE 19745584 A1 DE19745584 A1 DE 19745584A1
Authority
DE
Germany
Prior art keywords
boards
stack
magnetic field
separating non
acting
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.)
Withdrawn
Application number
DE1997145584
Other languages
German (de)
Inventor
Thomas Dr Klaerner
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.)
UTZ-UMFORMTECHNISCHES ZENTRUM GMBH, 08451 CRIMMITS
Original Assignee
Sibea Ingenieurbetrieb Fu GmbH
UMFORMTECHNISCHES ZENTRUM 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 Sibea Ingenieurbetrieb Fu GmbH, UMFORMTECHNISCHES ZENTRUM GmbH filed Critical Sibea Ingenieurbetrieb Fu GmbH
Priority to DE1997145584 priority Critical patent/DE19745584A1/en
Publication of DE19745584A1 publication Critical patent/DE19745584A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G59/00—De-stacking of articles
    • B65G59/02—De-stacking from the top of the stack
    • B65G59/04—De-stacking from the top of the stack by suction or magnetic devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/23—Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
    • B23Q7/10—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of magazines
    • B23Q7/103—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of magazines for flat material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

The method involves one or more vacuum suction devices picking up the topmost plate, raising it and passing it through a magnetic field outside the stack. The magnetic field active in the periphery of the stack induces eddy currents in the vertically moving plates, so that pulsed forces act on the plates, leading to different relative motions if further plates adhere to the topmost plate, resulting in separation.

Description

Die Erfindung betrifft ein Verfahren zur Vereinzelung von nichtferromagnetischen Platinen vom Stapel, um das einzelne automatische Zuführen der Platinen in Pressen abzusichern.The invention relates to a method for separating non-ferromagnetic boards from the stack to secure the individual automatic feeding of the blanks in presses.

Beim Entstapeln von Platinen vom oberen Stapelende mittels Vakuumsauger besteht die Gefahr, daß unter der von einem oder mehreren Vakuumsaugern erfaßten Platine eine oder mehrere weitere Platinen durch zum Beispiel Schmierfilm oder Gratbildung anhaften. Um das zu vermeiden ist bekannt, beim Entstapeln von ferromagnetischen Platinen so­ genannte Spreizmagnete in Form von Elektro- oder Permanentmagneten (DE 36 15 186; DE 42 02 379) zum seitlichen fächerförmigen Aufspreizen der Platinen einzusetzen.When destacking boards from the top of the stack using a vacuum cup, there is Danger that under the board gripped by one or more suction cups or attach several other boards by, for example, lubricating film or burr formation. To avoid this, it is known to do so when destacking ferromagnetic boards called spreading magnets in the form of electric or permanent magnets (DE 36 15 186; DE 42 02 379) for lateral fan-shaped spreading of the boards.

Da diese Methode beim Entstapeln von nichtferromagnetischen Platinen versagt, wurde das Übertragen von Schwingungen bzw. einer Rüttelbewegung über die Vakuumsauger und ihre Halteelemente auf die Platinen, teilweise unterstützt durch seitliches Anblasen der oberen Stapelkante mittels Druckluftstrahl, vorgeschlagen (DE 12 33 330; DE 28 00 381; EP 01 90 754).Because this method failed when destacking non-ferromagnetic boards, the transmission of vibrations or a shaking motion via the vacuum cups and their holding elements on the boards, partly supported by blowing on the side the upper stack edge by means of compressed air jet, proposed (DE 12 33 330; DE 28 00 381; EP 01 90 754).

Die Schwingungs- bzw. Rüttelbewegungen beeinträchtigen die Haftkräfte der Vakuum­ sauger, so daß auch mit zusätzlichem Luftstrahl fest aneinanderhaftende Platinen nicht sicher getrennt werden.The vibration or shaking movements affect the adhesive forces of the vacuum sucker, so that even with additional air jet firmly adhering boards be separated safely.

Schließlich ist in der DE 44 02 885 ein Verfahren zum Entstapeln von nichtferromagneti­ schen Platinen vorgeschlagen, bei dem die von den Vakuumsaugern erfaßte oberste Platine eines Stapels zur Vereinzelung eventuell daran haftenden weiteren Platinen während einer horizontalen Transportbewegung in den Werkzeugraum einer Presse durch ein unterhalb der Transportebene und entgegengesetzt zur Transportrichtung sich bewegendes elektromagnetisches Feld geführt wird. Dadurch soll in den aneinander haf­ tenden Platinen eine zur Transportrichtung entgegengesetzt wirkende Schubkraft erzeugt, diese gegeneinander verschoben und so voneinander getrennt werden.Finally, DE 44 02 885 describes a method for unstacking nonferromagneti circuit boards proposed, in which the uppermost captured by the vacuum suction Circuit board of a stack for separating further circuit boards that may adhere to it during a horizontal transport movement into the tool room of a press through one below the transport level and opposite to the transport direction moving electromagnetic field is guided. This is supposed to hafe each other blanks produce a shear force that acts counter to the direction of transport, these are shifted against each other and thus separated from each other.

An diesem Verfahren ist nachteilig, daß eine horizontale geradlinige Bewegungsphase der Vakuumsauger mit den Platinen erforderlich, aber mit vorhandenen Einrichtungen aus kinematischen Gründen eventuell nicht zu realisieren ist. The disadvantage of this method is that a horizontal rectilinear movement phase the vacuum cup with the circuit boards required, but with existing facilities may not be possible for kinematic reasons.  

Die horizontale Relativbewegung zwischen den aneinander haftenden Platinen kann zu Oberflächenbeschädigungen in Form von Kratzern führen. Andererseits kann eine starke Gratbildung das Verschieben der Platinen gegeneinander stark behindern oder gar un­ möglich machen.The horizontal relative movement between the boards adhering to each other can increase Cause surface damage in the form of scratches. On the other hand, a strong one Burr formation strongly hinder the movement of the boards against each other or even un make possible.

Der in den Ansprüchen angegebenen Erfindung liegt das Problem zugrunde, das Ver­ einzeln von aneinander haftenden nichtferromagnetischen Platinen während des Abhe­ bens vom Stapel oder unmittelbar danach über dem Stapel mit großer Sicherheit zu er­ möglichen.The invention specified in the claims is based on the problem that Ver individually of adhering nonferromagnetic boards during removal bens from the stack or immediately afterwards over the stack with great certainty possible.

Die erfindungsgemäße Lösung ist an Platinenzuführungen beliebiger Kinematik der Va­ kuumsauger ohne Beeinträchtigung der Taktzeit mit geringem materiellen und finanziellen Aufwand realisierbar. Auch durch Gratbildung aneinander haftende Platinen können sicher getrennt bzw. vereinzelt werden.The solution according to the invention is on board feeds of any kinematics of Va vacuum cleaner without affecting the cycle time with little material and financial Effort realizable. Boards that stick together can also be formed by burrs be separated or separated safely.

AusführungsbeispieleEmbodiments

Gemäß Anspruch 1 wird außerhalb des senkrecht angeordneten Platinenstapels ein Mag­ netfeld z. B. mittels einer von einer Impulsstromquelle gespeisten Induktionsspule er­ zeugt, das Wirbelströme in den Platinen des oberen Stapelendes hervorruft. Dadurch wirken entsprechend der Frequenz der Impulsstromquelle impulsförmige Kräfte auf die von den Vakuumsaugern erfaßte und eventuell daran haftende weitere Platine. Da diese Kräfte parallel oder leicht geneigt zur Stapelachse wirken, stoßen sich an der von den Vakuumsaugern erfaßten Platine haftende weitere Platinen von ersterer und von­ einander ab, so daß die Vakuumsauger nur die direkt erfaßte oberste Platine weitertrans­ portieren und bisher daran haftende weitere Platinen auf den Stapel zurückfallen.According to claim 1, a mag is placed outside the vertically arranged stack of boards netfeld z. B. by means of an induction coil fed by a pulse current source testifies that eddy currents cause in the boards of the upper end of the stack. As a result, pulsed forces act according to the frequency of the pulse current source on the other circuit board which is gripped by the vacuum suction cups and which may adhere to it. Since these forces act parallel or slightly inclined to the stacking axis, they collide with each other from the vacuum cups attached circuit boards adhering to the former and from from each other, so that the vacuum cups only the top board directly detected port and fall back on the stack of previously attached boards.

Gemäß Anspruch 2 wird unmittelbar nach dem Abheben der obersten Platine des senk­ recht angeordneten Platinenstapels mittels Sensortechnik kontrolliert, ob an dieser erfaß­ ten Platine eine oder mehrere weitere Platinen anhaften. According to claim 2 is immediately after lifting the top board of the lower right stack of boards checked by sensor technology to determine whether it was detected Adhere one or more other boards to the board.  

In diesem Fall wird durch einen Schaltimpuls der Aufbau eines im Umfangsbereich der Platinen wirkenden Magnetfeldes ausgelöst. Dieses erzeugt Wirbelströme in den vom Stapel abgehobenen Platinen, wodurch parallel oder leicht geneigt zur Stapelachse ge­ richtete impulsförmige Kräfte auf diese Platinen einwirken. Es kommt wieder zum Ab­ stoßen der abgehobenen Platinen voneinander und zum Zurückfallen der anhaftenden Platinen auf den Stapel, so daß nur die direkt erfaßte oberste Platine von den Vakuum­ saugern weitertransportiert wird.In this case, the build-up of a in the circumferential area of the Circuit boards acting magnetic field triggered. This creates eddy currents in the Stack of lifted boards, which means parallel or slightly inclined to the stacking axis directed impulsive forces act on these boards. It comes down again push the lifted boards off each other and the adhering ones fall back Boards on the stack so that only the top board directly captured by the vacuum vacuum is transported further.

Claims (2)

1. Verfahren zum Vereinzeln von nichtferromagnetischen Platinen vom Stapel, indem die oberste Platine von einem oder mehreren Vakuumsaugern erfaßt, abgehoben und durch ein außerhalb des Stapels erzeugtes Magnetfeld geführt wird, dadurch gekenn­ zeichnet, daß das im Umfangsbereich des Stapels wirkende Magnetfeld Wirbelströme in den vertikal bewegten Platinen hervorruft, dadurch impulsförmige Kräfte auf die Pla­ tinen einwirken, die im Falle des bekannten Anhaftens einer oder mehrerer weiterer Platinen an der obersten Platine zu unterschiedlichen Relativbewegungen und somit zum Lösen dieser Platinen voneinander führen.1. A method for separating non-ferromagnetic boards from the stack by the top board is grasped by one or more suction cups, lifted and passed through a magnetic field generated outside the stack, characterized in that the magnetic field acting in the peripheral region of the stack eddy currents in the vertical causes moving boards, thereby acting impulsive forces on the boards, which lead to different relative movements in the case of known adherence of one or more other boards to the top board and thus to detach these boards from each other. 2. Verfahren zum Vereinzeln von nichtferromagnetischen Platinen vom Stapel, indem die oberste Platine von einem oder mehreren Vakuumsaugern erfaßt, abgehoben und da­ bei das Anhaften einer oder mehrerer weiterer Platinen mittels eines Sensors kontrol­ liert wird, der in diesem Falle einen Schaltimpuls zum Aufbau eines Magnetfeldes aus­ löst, dadurch gekennzeichnet, daß das im Umfangsbereich des Stapels wirkende Magnetfeld Wirbelströme in den vertikal bewegten Platinen erzeugt, dadurch impuls­ förmige Kräfte auf die Platinen einwirken, die zu unterschiedlichen Relativbewegungen und somit zum Lösen dieser Platinen voneinander führen.2. Method for separating non-ferromagnetic boards from the stack by the top circuit board gripped by one or more suction cups, and there if one or more other boards are attached, check using a sensor Is liert, in this case a switching pulse to build up a magnetic field solves, characterized in that that acting in the peripheral region of the stack Magnetic field eddy currents generated in the vertically moving boards, thereby impulses shaped forces act on the boards, leading to different relative movements and thus lead to detachment of these boards from each other.
DE1997145584 1997-10-15 1997-10-15 Method of separating non-ferromagnetic plates from stack for feeding into press Withdrawn DE19745584A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1997145584 DE19745584A1 (en) 1997-10-15 1997-10-15 Method of separating non-ferromagnetic plates from stack for feeding into press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1997145584 DE19745584A1 (en) 1997-10-15 1997-10-15 Method of separating non-ferromagnetic plates from stack for feeding into press

Publications (1)

Publication Number Publication Date
DE19745584A1 true DE19745584A1 (en) 1999-04-22

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Application Number Title Priority Date Filing Date
DE1997145584 Withdrawn DE19745584A1 (en) 1997-10-15 1997-10-15 Method of separating non-ferromagnetic plates from stack for feeding into press

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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2160050A1 (en) * 1999-04-26 2001-10-16 Asm S A Device for separating, lifting and moving aluminum sheets or other non-ferromagnetic material
AT501323B1 (en) * 2005-01-19 2007-07-15 Josef Ing Moser DEVICE AND METHOD FOR ASSEMBLING AND MOVING PLATE-BASED SUBSTRATES WITH METALLIC PROPERTIES

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2160050A1 (en) * 1999-04-26 2001-10-16 Asm S A Device for separating, lifting and moving aluminum sheets or other non-ferromagnetic material
AT501323B1 (en) * 2005-01-19 2007-07-15 Josef Ing Moser DEVICE AND METHOD FOR ASSEMBLING AND MOVING PLATE-BASED SUBSTRATES WITH METALLIC PROPERTIES
DE102005002499B4 (en) 2005-01-19 2018-10-18 Josef Moser Device and method for separating and moving plate-shaped substrates with metallic properties

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Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

Owner name: UTZ-UMFORMTECHNISCHES ZENTRUM GMBH, 08451 CRIMMITS

8139 Disposal/non-payment of the annual fee