EP0716993B1 - Method for destacking non ferromagnetical plates and installation for carrying out the method - Google Patents
Method for destacking non ferromagnetical plates and installation for carrying out the method Download PDFInfo
- Publication number
- EP0716993B1 EP0716993B1 EP19950119278 EP95119278A EP0716993B1 EP 0716993 B1 EP0716993 B1 EP 0716993B1 EP 19950119278 EP19950119278 EP 19950119278 EP 95119278 A EP95119278 A EP 95119278A EP 0716993 B1 EP0716993 B1 EP 0716993B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blank
- compressed air
- stack
- nozzles
- upwards
- 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 - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/08—Separating articles from piles using pneumatic force
- B65H3/0808—Suction grippers
- B65H3/0816—Suction grippers separating from the top of pile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
- B65H3/48—Air blast acting on edges of, or under, articles
Definitions
- the invention relates to a method for unstacking non-ferromagnetic boards by means of vertical and horizontal movably arranged suction pads according to the preamble of claim 1 and a device for Execution of the procedure.
- the invention is based on the problem of specifying a method and a device for carrying out the method according to which a functionally reliable, low-noise and inexpensive unstacking of boards made of non-ferromagnetic materials by means of compressed air is possible without mechanical influences on the boards, a high back pressure being generated and the direction of the air jet should also act on the board to be lifted during the lifting stroke of the suction pad.
- the method can be implemented by the method steps mentioned in the characterizing part of patent claim 1. Further advantageous embodiments of the method are described in claims 2 to 6.
- a device for performing the method can be implemented by the features described in the characterizing part of claim 7.
- the features of claims 8 and 9 relate to further detailed configurations of the device.
- the compressed air nozzle can also be automated for the respective board stack change.
- the unstacking device (FIG. 1) consists of a simple one Execution from a frame-shaped frame 1 with in Transport direction extending guide rails 2, which a carriage 3 is slidably mounted. Of the The carriage 3 is driven by mechanical Coupling with the drive of the transfer device Press 9 or by means of a separate drive motor in known way. In the carriage 3 is one with suction cups 4 equipped traverse 5 by means of a separate drive and lowered. Below the suction pad 4 is at least one loaded with a stack of boards 20 Stacking trolley or stacking table 7 with a lifting device 8 intended. The stanchions 6 are firmly on the frame of the Stacking table 7. The lifting device 8 lifts the Circuit board stack 20 and leads it continuously during processing so that the tap level is as constant as possible is held. The stanchions 6 have at their upper end preferably each a pivotable compressed air nozzle 10.
- the lever 12 has a pneumatic pivot bearing 13 in its bearing point.
- the nozzle mouthpiece 14 is specially designed and is displaceably mounted on the lever 12.
- a compression spring 15 pushes it to the left to the stack of blanks 20.
- the cross pin 16 holds the nozzle mouthpiece 14 in its end position facing the stack of blanks 20 and serves the compression spring 15 as an abutment.
- An elongated hole is made for the cross pin 16 within the nozzle mouthpiece 14 in order to realize the displaceability of the nozzle mouthpiece 14.
- the nozzle contour 14 is designed in its outer contours so that the sealing surface 17 runs parallel to the outer edge of the stack of boards 20 and the bearing surface 18 comes to rest on the board stack 20, as shown in position I in Figure 3.
- the suction gripper 4 lifts the circuit board or several circuit boards into the control position (display of the control position with switch 11) and thus the compressed air nozzle 10 in position II. With a further upward stroke, the compressed air nozzle 10 arrives in position III, in which the circuit board bypasses it and from which pivots out of the compressed air nozzle 10 again by its own weight.
- the sloping surface 19 of the nozzle mouthpiece 14 slides onto the stack edge and pushes the nozzle mouthpiece 14 back until the sealing surface 17 abuts the outer surface of the stack.
- the compressed air nozzle 10 pivots further down until the support surface 18 rests on the stack surface.
- the outlet opening for the air jet in the nozzle mouthpiece 14 is preferably elongated, so that a Air jet vane is created.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Description
Die Erfindung betrifft ein Verfahren zum Entstapeln von nichtferromagnetischen Platinen mittels vertikal und horizontal bewegbar angeordneten Sauggreifern gemäß dem Oberbegriff des Patentanspruchs 1 sowie eine Einrichtung zur Durchführung des Verfahrens. The invention relates to a method for unstacking non-ferromagnetic boards by means of vertical and horizontal movably arranged suction pads according to the preamble of claim 1 and a device for Execution of the procedure.
Beim Abheben der Platinen von einem Stapel besteht das
Problem, daß gleichzeitig mehrere aneinanderhaftende Platinen
- sogenannte Doppelplatinen - durch die Sauggreifer
erfaßt, vom Stapel abgehoben und der Presse zugeführt
werden. Um das Abnehmen von Doppelplatinen zu vermeiden,
ist es erforderlich, die Adhäsionskräfte zwischen den aneinanderhaftenden
Platinen wesentlich zu reduzieren bzw.
aufzuheben und ggf. bei der Trennung der Platinen zu erreichen,
daß zwischen den Platinen Luft einströmen kann.
Mechanische Verhakungen durch den Schnittgrat sind ebenfalls
aufzuheben.
Zum Entstapeln ferromagnetischer Platinen ist es bekannt
(DE-A-42 02 379), im oberen Bereich der Platinenstapel als
Elektromagnete oder Permanentmagnete ausgeführte Spreizmagnete
anzuordnen, die durch den Aufbau von sich gegenseitig
abstoßenden Magnetfeldern ein zuverlässiges Trennen
der jeweils oberen Platinen vom Stapel gewährleisten. Derartige
Lösungen sind für das Entstapeln von nichtferromagnetischen
Platinen nicht anwendbar.
Das Vereinzeln und Entstapeln von nichtferromagnetischen
Platinen erfolgt bei bekannten Lösungen der vorstehend
genannten Art (DE-C-12 33 330, DE-A-28 00 381,
EP-A-0 190 754) durch die Übertragung von Schwingungen (bzw.
einer Rüttelbewegung) über die Sauggreifer auf die Platinen,
ggf. unterstützt durch ein zeitweises Anblasen der
Stapelkante mittels eines Druckluftstrahles.
Bei der letztgenannten Lösung (EP-A-0 190 754) wird auch
vorgeschlagen, durch Umbiegen eines Kantenabschnittes der
obersten Platine und Richten eines Luftstromes auf den
umgebogenen Abschnitt während des Zurückführens in die
Ebene eine Trennung von Doppelplatinen zu erreichen.
Nachteilig wirkt es sich bei diesen Lösungen aus, daß die
durch die Schwingungen erreichbaren geringen Lösekräfte bei
fest aneinander haftenden Platinen nicht in jedem Fall ausreichen,
um eine zuverlässige Trennung zu erreichen. Das
gleiche trifft auch für das zusätzliche Anblasen der Stapelkante
mittels eines Druckluftstrahles zu, so daß trotz
eines hohen Aufwandes ein kontinuierliches Arbeiten derartiger
Einrichtungen nicht gewährleistet ist. Das zeitweise
Umbiegen eines Kantenabschnittes der obersten Platine
ist aufgrund der Federeigenschaften nur bei sehr dünnen
Platinen anwendbar.
Der Erfindung liegt das Problem zugrunde, ein Verfahren und
eine Einrichtung zur Durchführung des Verfahrens anzugeben,
nach dem ein funktionssicheres, lärmarmes und
kostengünstiges Entstapeln von Platinen aus
nichtferromagnetischen Werkstoffen mittels Druckluft ohne
mechanische Einwirkungen auf die Platinen möglich ist,
wobei ein hoher Staudruck erzeugt werden und der Luftstrahl
richtungsveränderlich auch während des Hebehubes des
Sauggreifers auf die zu hebende Platine wirken soll. When lifting the blanks from a stack, there is the problem that a plurality of blended blanks - so-called double blanks - are gripped by the suction pads, lifted off the stack and fed to the press. In order to avoid the removal of double boards, it is necessary to substantially reduce or eliminate the adhesive forces between the boards adhering to one another and, if necessary, to achieve that when the boards are separated, air can flow in between the boards. Mechanical entanglement through the cutting ridge must also be removed.
For unstacking ferromagnetic boards, it is known (DE-A-42 02 379) to arrange spreading magnets designed as electromagnets or permanent magnets in the upper area of the board stack, which ensure reliable separation of the respective top boards from the stack by the construction of mutually repelling magnetic fields. Such solutions cannot be used for unstacking nonferromagnetic boards.
In known solutions of the aforementioned type (DE-C-12 33 330, DE-A-28 00 381, EP-A-0 190 754), the separation and de-stacking of nonferromagnetic boards takes place by the transmission of vibrations (or a shaking movement) ) via the suction pads on the boards, if necessary supported by temporarily blowing the edge of the stack with a compressed air jet.
In the latter solution (EP-A-0 190 754) it is also proposed to achieve a separation of double boards by bending an edge section of the uppermost board and directing an air stream onto the bent section while returning to the plane.
A disadvantage of these solutions is that the low release forces that can be achieved by the vibrations are not sufficient in all cases in the case of boards adhering firmly to one another in order to achieve a reliable separation. The same also applies to the additional blowing on the stack edge by means of a compressed air jet, so that despite such a high outlay, continuous operation of such devices is not guaranteed. The temporary bending of an edge section of the top board can only be used with very thin boards due to the spring properties.
The invention is based on the problem of specifying a method and a device for carrying out the method according to which a functionally reliable, low-noise and inexpensive unstacking of boards made of non-ferromagnetic materials by means of compressed air is possible without mechanical influences on the boards, a high back pressure being generated and the direction of the air jet should also act on the board to be lifted during the lifting stroke of the suction pad.
Erfindungsgemäß ist das Verfahren durch die im kennzeichnenden
Teil des Patentanspruchs 1 genannten Verfahrensschritte
realisierbar. Weitere vorteilhafte Ausgestaltungen
des Verfahrens sind in den Ansprüchen 2 bis 6 beschrieben.
Eine Einrichtung zur Durchführung des Verfahrens ist durch
die im kennzeichnenden Teil des Anspruchs 7 beschriebenen
Merkmale realisierbar. Die Merkmale der Ansprüche 8 und 9
betreffen weitere detaillierte Ausgestaltungen der
Einrichtung.
Für den jeweiligen Platinenstapelwechsel ist die
Druckluftdüse auch automatisierbar.
According to the invention, the method can be implemented by the method steps mentioned in the characterizing part of patent claim 1. Further advantageous embodiments of the method are described in claims 2 to 6. A device for performing the method can be implemented by the features described in the characterizing part of claim 7. The features of claims 8 and 9 relate to further detailed configurations of the device.
The compressed air nozzle can also be automated for the respective board stack change.
Die Erfindung wird nachstehend an einem Ausführungsbeispiel näher erläutert. Die zugehörigen Zeichnungen zeigen:
- Fig. 1:
- eine schematische Darstellung der Einrichtung in der Seitenansicht,
- Fig. 2:
- die Einrichtung nach Fig. 1 in der Draufsicht,
- Fig. 3:
- Schnittdarstellung der Druckluftdüse
- Fig. 1:
- a schematic representation of the device in side view,
- Fig. 2:
- 1 in top view,
- Fig. 3:
- Sectional view of the compressed air nozzle
Die Entstapeleinrichtung (Fig. 1) besteht in einer einfachen Ausführung aus einem rahmenförmigen Gestell 1 mit in Transportrichtung verlaufenden Führungsschienen 2, auf denen ein Schlitten 3 verschiebbar gelagert ist. Der Antrieb des Schlittens 3 erfolgt durch mechanische Koppelung mit dem Antrieb der Transfereinrichtung der Presse 9 oder mittels eines separaten Antriebsmotors in bekannter Weise. Im Schlitten 3 ist eine mit Sauggreifern 4 bestückte Traverse 5 mittels eines separaten Antriebes heb- und und senkbar gelagert. Unterhalb des Sauggreifers 4 ist mindestens ein mit einem Platinenstapel 20 beladener Stapelwagen bzw. Stapeltisch 7 mit einer Hubeinrichtung 8 vorgesehen. Die Rungen 6 stehen fest auf dem Rahmen des Stapeltisches 7. Die Hubeinrichtung 8 hebt den Platinenstapel 20 an und führt ihn bei Abarbeitung ständig nach, so daß ein möglichst konstantes Abgriffniveau gehalten wird. Die Rungen 6 besitzen an ihrem oberen Ende vorzugsweise je eine schwenkbare Druckluftdüse 10. The unstacking device (FIG. 1) consists of a simple one Execution from a frame-shaped frame 1 with in Transport direction extending guide rails 2, which a carriage 3 is slidably mounted. Of the The carriage 3 is driven by mechanical Coupling with the drive of the transfer device Press 9 or by means of a separate drive motor in known way. In the carriage 3 is one with suction cups 4 equipped traverse 5 by means of a separate drive and lowered. Below the suction pad 4 is at least one loaded with a stack of boards 20 Stacking trolley or stacking table 7 with a lifting device 8 intended. The stanchions 6 are firmly on the frame of the Stacking table 7. The lifting device 8 lifts the Circuit board stack 20 and leads it continuously during processing so that the tap level is as constant as possible is held. The stanchions 6 have at their upper end preferably each a pivotable compressed air nozzle 10.
In Fig. 3 sind die Einzelheiten der Druckluftdüse 10
dargestellt. Der Hebel 12 besitzt in seinem Lagerpunkt ein
pneumatisches Schwenklager 13. Das Düsenmundstück 14 ist
speziell gestaltet und auf dem Hebel 12 verschiebbar
gelagert. Eine Druckfeder 15 schiebt es nach links zum
Platinenstapel 20. Der Querstift 16 hält das Düsenmundstück
14 in seiner dem Platinenstapel 20 zugewandten Endlage und
dient der Druckfeder 15 als Widerlager.
Innerhalb des Düsenmundstückes 14 ist für den Querstift 16
ein Langloch eingebracht, um die Verschiebbarkeit des
Düsenmundstückes 14 zu realisieren. Das Düsenmundstück 14
ist in seinen äußeren Konturen so gestaltet, daß die
Dichtfläche 17 parallel zur Außenkante des Platinenstapels
20 verläuft und die Auflagefläche 18 auf dem Platinenstapel
20 zur Auflage kommt, wie in der Stellung I in Figur 3
dargestellt. Der Sauggreifer 4 hebt die Platine bzw.
mehrere Platinen in die Kontrollstellung (Anzeige der
Kontrollstellung mit Schalter 11) und damit die
Druckluftdüse 10 in Stellung II. Bei weiterem Aufwärtshub
gelangt die Druckluftdüse 10 in Stellung III, in der die
Platine an ihr vorbeigeleitet und von der aus die
Druckluftdüse 10 durch Eigengewicht wieder nach unten
schwenkt. Dabei gleitet die schräge Fläche 19 des
Düsenmundstückes 14 auf die Stapelkante und schiebt das
Düsenmundstück 14 so weit zurück bis die Dichtfläche 17 an
der Stapelaußenfläche anliegt. Die Druckluftdüse 10
schwenkt weiter nach unten bis die Auflagefläche 18 erneut
auf der Stapeloberfläche aufliegt. 3 shows the details of the compressed air nozzle 10. The lever 12 has a pneumatic pivot bearing 13 in its bearing point. The nozzle mouthpiece 14 is specially designed and is displaceably mounted on the lever 12. A compression spring 15 pushes it to the left to the stack of blanks 20. The cross pin 16 holds the nozzle mouthpiece 14 in its end position facing the stack of blanks 20 and serves the compression spring 15 as an abutment.
An elongated hole is made for the cross pin 16 within the nozzle mouthpiece 14 in order to realize the displaceability of the nozzle mouthpiece 14. The nozzle contour 14 is designed in its outer contours so that the sealing surface 17 runs parallel to the outer edge of the stack of boards 20 and the bearing surface 18 comes to rest on the board stack 20, as shown in position I in Figure 3. The suction gripper 4 lifts the circuit board or several circuit boards into the control position (display of the control position with switch 11) and thus the compressed air nozzle 10 in position II. With a further upward stroke, the compressed air nozzle 10 arrives in position III, in which the circuit board bypasses it and from which pivots out of the compressed air nozzle 10 again by its own weight. The sloping surface 19 of the nozzle mouthpiece 14 slides onto the stack edge and pushes the nozzle mouthpiece 14 back until the sealing surface 17 abuts the outer surface of the stack. The compressed air nozzle 10 pivots further down until the support surface 18 rests on the stack surface.
Die Austrittsöffnung für den Luftstrahl im Düsenmundstück 14 ist vorzugsweise länglich gestaltet, so daß eine Luftstrahlfahne entsteht. The outlet opening for the air jet in the nozzle mouthpiece 14 is preferably elongated, so that a Air jet vane is created.
Claims (9)
- A method of destacking non-ferromagnetic blanks, in which the blanks are lifted off the blank stack (20) by means of vacuum grippers (4) arranged so as to be vertically and horizontally mobile and are optionally supplied by means of further intermediate conveyors to the tool area of a press (9) or other processing machine, characterised in that, prior to removal of the uppermost blank from the blank stack (20), a plurality of positionable nozzles (10) blast compressed air at the parting line between the uppermost blank and the one located therebelow and, after removal of the uppermost blank, during the upwards stroke of the vacuum gripper (4), effect an upwards swivelling movement, whereby the parting line is blasted from a different direction.
- A method according to claim 1, characterised in that vertically swivellable compressed air nozzles (10) are arranged on the uprights (6), the displaceable nozzle mouthpieces (14) of which nozzles (10) may be accurately positioned on the uppermost blank by means of a bearing surface (18), such that the compressed air jet is blasted between the uppermost and subsequent blank and, during the lifting process carried out by the vacuum grippers (4), the compressed air nozzles (10) are swivelled upwards by means of the bearing surface (18) until the respective bearing surface (18) brushes downwards past the outer edge of the blank and rests itself once again on the next blank, the respective nozzle mouthpiece (14) thereby positioning itself.
- A method according to claims 1 and 2, characterised in that, to increase the effect of the compressed air, lateral escape of the compressed air from the blank stack (20) is extensively prevented by positioning the compressed air nozzle (10) flat against the blank stack (20).
- A method according to claims 1 and 2, characterised in that the upwards movement of the vacuum gripper (4) starts at low speed, such that sufficient time is available for penetration of the air between the uppermost and subsequent blank.
- A method according to claims 1 and 2, characterised in that the separating process effected during the upwards stroke when the nozzles (10) are blasting compressed air from a different direction is concluded only when measurement of sheet thickness indicates that only a single blank is held by the vacuum gripper (4).
- A method according to claims 1 and 2, characterised in that the vacuum gripper (4) effects its upwards stroke initially only as far as a check height indicated by an electrical or pneumatic signal, at which height the sheet thickness measurement is carried out and the compressed air nozzles (10) are still engaged and from which alternating stroke movements are effected if additional tenacious blanks have to blasted or shaken off, the vacuum gripper (4) then continuing its upwards stroke as far as the end position.
- An apparatus for carrying out the method according to claim 1, comprising at least one elevating device (8), which raises the blank stack (20) guided in uprights (6) and thus keeps the stack surface at pick-off level, with a tolerance of ca. ± 10 mm, and comprising a vacuum gripper (4), movable at least vertically, for lifting the blanks off the blank stack (20) and raising them towards a suction belt lying thereabove or conveying them to a transfer point, characterised in that vertically swivelling compressed air nozzles (10) are arranged on the uprights (6), which nozzles (10) have nozzle mouthpieces (14) arranged displaceably on a lever (12), wherein the nozzle mouthpieces (14) comprise, in addition to the vertically elongate air outlet opening, a bearing surface (18), a sealing surface (17) and an oblique surface (19) on the blank stack side.
- An apparatus according to claim 7, characterised in that the sealing surface (17) is pressed against the respective outer edge face of the blank stack (20) with low spring and compressed air force.
- An apparatus according to claim 7, characterised in that drive of the upwards movement of the vacuum gripper (4) is effected pneumatically or hydraulically by a controlled servo or flow control valve or electrically by a servomotor or a reversible-pole electric motor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19944444963 DE4444963C2 (en) | 1994-12-16 | 1994-12-16 | Process for unstacking non-ferromagnetic boards and device for carrying out the process |
| DE4444963 | 1994-12-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0716993A1 EP0716993A1 (en) | 1996-06-19 |
| EP0716993B1 true EP0716993B1 (en) | 1998-05-06 |
Family
ID=6536055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19950119278 Expired - Lifetime EP0716993B1 (en) | 1994-12-16 | 1995-12-07 | Method for destacking non ferromagnetical plates and installation for carrying out the method |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0716993B1 (en) |
| DE (1) | DE4444963C2 (en) |
| ES (1) | ES2116031T3 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19950078A1 (en) * | 1999-10-18 | 2001-04-26 | Thyssenkrupp Ind Ag | Preparing components used in the production of metal sheets by laser welding comprises using an apparatus that stacks components from different stacks |
| DE10162047C1 (en) * | 2001-12-17 | 2003-04-03 | Audi Ag | Billet handling device for inserting steel sheet billet into a press comprises a manipulating crane having a vertical base pillar, an elbow arm, a manipulator and a vacuum gripper |
| DE102005020301B4 (en) * | 2005-04-30 | 2015-10-29 | Volkswagen Ag | A destacking apparatus for separating boards from a stack of boards and method for operating a destacking device |
| DE102006014136C5 (en) * | 2006-03-28 | 2017-01-12 | Rena Gmbh | Machine for destacking disc-shaped substrates |
| CN103879780A (en) * | 2014-03-25 | 2014-06-25 | 宁波摩科机器人科技有限公司 | Wafer loading device |
| CN104003193B (en) * | 2014-06-12 | 2016-04-06 | 山东省科学院自动化研究所 | A kind of based on swinging abrasive wheel forming movement circle punching press automatic charging device |
| JP2016011178A (en) * | 2014-06-27 | 2016-01-21 | 三星ダイヤモンド工業株式会社 | Method and device for conveying brittle material substrate |
| CN109433886A (en) * | 2018-10-12 | 2019-03-08 | 苏州峦胜机械科技有限公司 | Stamping device is used in a kind of processing of auto parts and components |
| DE102020209531A1 (en) | 2020-07-29 | 2022-02-03 | Volkswagen Aktiengesellschaft | Spreading device for separating sheets |
| DE102022105125A1 (en) * | 2022-03-04 | 2023-09-07 | TRUMPF Werkzeugmaschinen SE + Co. KG | Process and device for separating workpieces |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1233330B (en) | 1952-08-15 | 1967-01-26 | Budd Co | Device for lifting metal sheets from a stack of sheets |
| DE1816408A1 (en) * | 1968-12-13 | 1970-06-25 | Leipziger Buchbindereimaschine | Method and device for separating and separating sheets at regular intervals |
| US3627308A (en) * | 1970-05-25 | 1971-12-14 | Eastman Kodak Co | Sheet separator |
| US3724687A (en) * | 1971-03-26 | 1973-04-03 | Marguip Inc | Panel board feeding apparatus |
| DE2800381A1 (en) * | 1978-01-05 | 1979-07-12 | Schuler Gmbh L | LOADING DEVICE FOR A PRESS |
| DD138184A1 (en) * | 1978-08-22 | 1979-10-17 | Karl Marx | BLOWER EQUIPMENT FOR ARCCHAIR |
| DE3312459A1 (en) * | 1983-04-07 | 1984-10-18 | Lewecke Maschinenbau GmbH, 4920 Lemgo | Process for the forced separation of at least two flat workpieces adhering together by adhesive forces or vacuum suction forces during the lifting thereof and device for carrying out the process |
| US4703925A (en) * | 1985-02-08 | 1987-11-03 | Strippit/Di-Acro-Houdaille, Inc. | Semi-rigid sheet separation device and method |
| DE4202379A1 (en) * | 1992-01-29 | 1993-08-05 | Nsm Magnettechnik Gmbh | Removing steel sheets from sheet stack and transporting single sheets to transfer station for feeding press - using double sheet store between removal and transfer stations for separating double sheets using switchable magnets |
-
1994
- 1994-12-16 DE DE19944444963 patent/DE4444963C2/en not_active Expired - Fee Related
-
1995
- 1995-12-07 ES ES95119278T patent/ES2116031T3/en not_active Expired - Lifetime
- 1995-12-07 EP EP19950119278 patent/EP0716993B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ES2116031T3 (en) | 1998-07-01 |
| DE4444963A1 (en) | 1996-06-20 |
| DE4444963C2 (en) | 1997-12-18 |
| EP0716993A1 (en) | 1996-06-19 |
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