EP0425010A1 - Vorrichtung zum Heben von Gegenständen durch Anwenden von Unterdruck - Google Patents

Vorrichtung zum Heben von Gegenständen durch Anwenden von Unterdruck Download PDF

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Publication number
EP0425010A1
EP0425010A1 EP90202713A EP90202713A EP0425010A1 EP 0425010 A1 EP0425010 A1 EP 0425010A1 EP 90202713 A EP90202713 A EP 90202713A EP 90202713 A EP90202713 A EP 90202713A EP 0425010 A1 EP0425010 A1 EP 0425010A1
Authority
EP
European Patent Office
Prior art keywords
chamber
valve
passage
sub
atmospheric 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.)
Withdrawn
Application number
EP90202713A
Other languages
English (en)
French (fr)
Inventor
Paul Johannus Gerardus Helena Van Huet
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.)
Machinefabriek De Oude Rijn Pannerden BV
Original Assignee
Machinefabriek De Oude Rijn Pannerden BV
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 Machinefabriek De Oude Rijn Pannerden BV filed Critical Machinefabriek De Oude Rijn Pannerden BV
Publication of EP0425010A1 publication Critical patent/EP0425010A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/02—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by suction means
    • B66C1/0293—Single lifting units; Only one suction cup
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/02—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by suction means
    • B66C1/0212—Circular shape

Definitions

  • the invention relates to a device for lifting objects by making use of a sub-atmospheric pressure, said device being provided with a chamber in which a sub-atmospheric pressure can be generated.
  • Such a device is known from US Patent Specification No. 4,787,662.
  • the chamber in which a sub-atmospheric pressure can be generated is in open communication, via throttle passages, with openings located at the bottom side of the device which are surrounded by resilient material.
  • the device When the device is to be used it is placed on the objects to be moved, and a sub-atmospheric pressure will be generated in those openings that are covered by the objects as a result of which the object will stick to the device. At the location of the openings which are not covered by an object there will be an air flow.
  • a device for lifting objects by making use of a sub-­atmospheric pressure whereby the device is provided with a chamber in which a sub-atmospheric pressure can be generated, as well as with a valve located in said chamber and a valve stem fixed to the valve, said valve stem extending to a point beyond the chamber, through a passage extending in the bottom wall of the chamber, and with a bellows-shaped means connected to the valve and the valve stem, whereby the lower end of the valve stem is located near an opening surrounded by resilient material, which is located at the bottom side of the device, all this in such a manner that the valve and the valve stem can be put from a first position, in which the passage in the bottom wall of the chamber is closed by the valve, into a second position, in which the valve is located spaced from the bottom wall, and in which the chamber is in open communication with the opening surrounded by the resilient material.
  • Such a device is known from US-A-4,561.687.
  • the valve stem projecting beyond the bottom wall of the chamber is surrounded by the bellows-shaped means, which at its lower end is connected, via a connecting piece, to the lower end of the valve stems and which at its upper end is secured to the bottom wall of the chamber.
  • the bellows Near its lower end the bellows is thereby in open communication with the opening surrounded by the resilient material.
  • the bellows-shaped means functions mainly to effect a flexible connection between the connecting piece provided at the lower end of the valve stem and the remaining part of the device.
  • the valve located inside the chamber is at all times during operation subjected to the sub-atmospheric pressure prevailing in the chamber, which may involve the risk that a good seal of the passage cannot be ensured in the position in which the valve must close the passage.
  • the valve is secured to the lower end of the bellows-shaped means disposed in the chamber, said bellows-shaped means being retained between the valve and a fastening means located spaced from the bottom wall of the chamber, whilst the interior of the bellows-shaped means is in open communication, via a passage provided in the valve and in the valve stem, with the opening surrounded by the resilient material.
  • a pressure equal to the sub-atmospheric pressure will prevail in the interior of the bellows-shaped means, said pressure being exerted on the upper side of the valve, so that said valve will be positively forced into the position in which the passage in the bottom wall is closed.
  • a sub-­atmospheric pressure will also be generated in the interior of the bellows, so that the closing force exerted in the closed position is released.
  • a further advantage of the construction according to the invention is that as a result of its arrangement in the cabinet the bellows-shaped means is well-protected, as a result of which damage to the bellows-shaped means can be avoided to a great extent.
  • a device for lifting objects by making use of a sub-atmospheric pressure whereby the device is provided with a chamber in which a sub-­atmospheric pressure can be generated, said chamber being in open communication, via a passage, with a room in which a ball is present, said room being in communication with an opening surrounded by resilient material located at the bottom side of the device, all this in such a manner that when air tends to flow to the chamber via said opening and said room, as a result of a sub-atmospheric pressure being generated, said ball is moved upwards towards the passage in order to close said passage.
  • Such a device is known from FR-A-2,265,659 ( Figure 5).
  • the ball is accommodated in a cage with perforated walls, which is located spaced from the opening surrounded by resilient material.
  • the use of such a cage with perforated walls leads to a complicated construction, whilst there is also the risk of the perforations having a comparatively small passage becoming clogged.
  • the room accommodating the ball is formed by a bore having a diameter which is larger than the diameter of the ball, a further passage connecting to the bottom side of said room, said further passage forming the connection between the bore accomodating the ball and the opening surrounded by the resilient materials whilst the ends of the bore form conical seats for the ball.
  • Figure 1 shows an installation for removing. layer by layer, layers of bricks which are piled on top of each other in brick piles 1 which are present on a kiln car 2.
  • the bricks After baking the bricks usually show variations as to colour and shape, dependent on the fact whether the bricks form part of a pile placed near the side of the kiln car, and/or whether the bricks are located near the top or the bottom of the pile. In many cases it is desirable, therefore, to be able to mix the stones in a simple manner. For this purpose it is required to take down, layer by layers the piles built up of layers of bricks resting on top of each other, whereby it is furthermore required to be able to remove a layer from the one pile and a layer from another pile at random.
  • FIG. 1 which comprises a portal 3, under which a kiln car 2 is to be arranged in the illustrated manner.
  • a traversing trolley 3′ can be driven to and fro in the direction according to the arrow A.
  • Said traversing trolley supports a device 4 for lifting the bricks.
  • the device 4 can thereby be moved up and down by means of a setting cylinder 5.
  • the device 4 to be described in more detail hereinafter picks up the objects, bricks in this case, by using a sub-atmospheric pressure.
  • An air pump or fan 6 is mounted on the traversing trolley 3 in order to generate the sub-­atmospheric pressure in the device 4.
  • an upper layer of bricks can be respectively picked up from one of the piles 1, and such a layer can then be placed on a belt conveyor 7 in order to be discharged for further processing.
  • the device comprises a rectangular frame 8, in which a flat supporting plate 40 is fixed.
  • a plate 10 made of a resilient material, e.g. rubber or the like.
  • a large number of openings 11, circular in the illustrated embodiment, is provided in the plate 10, in such a manner that the central axes of said openings extend perpendicularly to the plate 40.
  • the openings 40 are in communication with a chamber 42 via bores 43 provided in the plate 40, said chamber 42 being bounded by the supporting plate 40 and a cover plate 41 provided, spaced by some distance, above the supporting plate, said cover plate 41 likewise being fixed in the frame 8.
  • the centre-to-centre distance between the openings 11 may suitably be 10 mm, whilst the diameter of the openings is 7 mm.
  • a sub-atmospheric pressure may be generated in the chamber 42 by means of the fan or the air pump.
  • Valve stems 44 extend through the holes 43.
  • the upper ends of the valve stems 44 are fixed to valves 45 formed by substantially cylindrical bodies.
  • Each valve 45 is secured to the lower end of a bellows 46 located in the chamber 42.
  • the bellows 46 is with its upper end fixed to a disc 47, which is secured to the plate 41 by means of a bolt connection 47.
  • valve stem 44 there is provided a slotted hole 49 ( Figure 5), which is in communication, by means of a bore 50 extending through the valve, with the otherwise closed internal room bounded by the bellows 46.
  • valves stems 49 located above the object(s) and the valves 45 with the sealing rings 51 coupled thereto will be forced upwards because the resilient material is pressed down under the influence of the weight of the device, so that the openings 11 located opposite the objects to be picked up will be put into open communication, via the holes 43, with the chamber 42 in which a sub-atmospheric pressure has been generated, and a sub-atmospheric pressure will again be generated in said openings.
  • the plate 10 consisting of resilient material and having openings 11, is secured to the lower side of a plate 52, in which there is provided a bore 53 which is in open communication with the opening 11.
  • said bore 53 opens, via a conical transition part 54, into a bore 55 having a larger diameter than the bore 53.
  • the upper end of said bore 55 joins up with a bore 56 having an equal diameter, said bore 56 being provided in a plate 57 secured to the upper side of the plate 52.
  • the bore 56 blends, via a conical transition part 58, into a bore 59, whose diameter is at least substantially equal to the diameter of the bore 53.
  • a ball 60 made of rubber, plastic material or the like material, the diameter of said ball being smaller than the diameter of the holes 56 and 55 and larger than the diameter of the holes 53 and 59.
  • the conical transition parts 54 and 58 form valve seats for said ball 60.
  • the bore 59 opens into a chamber 61 which, besides by the plate 57, is bounded by a plate 62 provided at some distance above the plate 57.
  • a plate 62 provided at some distance above the plate 57.
  • the chamber 61 it is again possible to generate a sub-atmospheric pressure by means not shown.
  • the device When using this device the device is first placed on one or more objects 15 to be picked up, as illustrated in Figure 18. Then a sub-­atmospheric pressure will be generated in the chamber 61. Near those openings 11 that are not covered by an object to be picked up, air will be sucked in via the opening 11 and the bores 53, 55, 56 and 59, as a result of which there will be an upward air flow, when seen in Figures 7 and 8, in the bores 55 and 56. Said air flow will carry along the ball 60 in upward direction, so that said ball 60 will bed down on the valve seat 58 and close the hole 59, so that it is prevented that air is further sucked in via openings 11 not covered by objects.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manipulator (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
EP90202713A 1989-10-26 1990-10-12 Vorrichtung zum Heben von Gegenständen durch Anwenden von Unterdruck Withdrawn EP0425010A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8902652A NL8902652A (nl) 1989-10-26 1989-10-26 Inrichting voor het opheffen van voorwerpen.
NL8902652 1989-10-26

Publications (1)

Publication Number Publication Date
EP0425010A1 true EP0425010A1 (de) 1991-05-02

Family

ID=19855521

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90202713A Withdrawn EP0425010A1 (de) 1989-10-26 1990-10-12 Vorrichtung zum Heben von Gegenständen durch Anwenden von Unterdruck

Country Status (2)

Country Link
EP (1) EP0425010A1 (de)
NL (1) NL8902652A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110255347A (zh) * 2018-03-12 2019-09-20 J.施迈茨有限公司 用于管提升器的操作装置以及管提升器

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2783018A (en) * 1955-02-11 1957-02-26 Vac U Lift Company Valve means for suction lifting devices
US3307816A (en) * 1965-03-31 1967-03-07 Cocito Joe Michael Inclined-bore vacuum board valve
GB1249294A (en) * 1967-09-05 1971-10-13 Nat Res Dev Improvements in and relating to suction pads
DE2354898A1 (de) * 1973-03-02 1974-09-12 Othene Internat Handelmij B V Saugnapfausbildung
FR2265659A1 (en) * 1974-03-29 1975-10-24 Barbe Gaston Suction-type sheet handling equipment - has valves actuated by pressure difference between housing and compartments
DE3325207A1 (de) * 1983-07-13 1985-01-31 Peter-Uhren Gmbh, 7210 Rottweil Sauggreifer mit selbststeuernder saugoeffnung
DE3419913A1 (de) * 1984-05-28 1985-11-28 Max Kettner Verpackungsmaschinenfabrik GmbH & Co KG, 8000 München Vorrichtung zum anheben und transportieren von gebindelagen
US4561687A (en) * 1984-05-30 1985-12-31 Harris Corporation Vacuum grip device
US4787662A (en) * 1987-08-28 1988-11-29 Hewlett-Packard Company Vacuum driven gripping tool

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2783018A (en) * 1955-02-11 1957-02-26 Vac U Lift Company Valve means for suction lifting devices
US3307816A (en) * 1965-03-31 1967-03-07 Cocito Joe Michael Inclined-bore vacuum board valve
GB1249294A (en) * 1967-09-05 1971-10-13 Nat Res Dev Improvements in and relating to suction pads
DE2354898A1 (de) * 1973-03-02 1974-09-12 Othene Internat Handelmij B V Saugnapfausbildung
FR2265659A1 (en) * 1974-03-29 1975-10-24 Barbe Gaston Suction-type sheet handling equipment - has valves actuated by pressure difference between housing and compartments
DE3325207A1 (de) * 1983-07-13 1985-01-31 Peter-Uhren Gmbh, 7210 Rottweil Sauggreifer mit selbststeuernder saugoeffnung
DE3419913A1 (de) * 1984-05-28 1985-11-28 Max Kettner Verpackungsmaschinenfabrik GmbH & Co KG, 8000 München Vorrichtung zum anheben und transportieren von gebindelagen
US4561687A (en) * 1984-05-30 1985-12-31 Harris Corporation Vacuum grip device
US4787662A (en) * 1987-08-28 1988-11-29 Hewlett-Packard Company Vacuum driven gripping tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110255347A (zh) * 2018-03-12 2019-09-20 J.施迈茨有限公司 用于管提升器的操作装置以及管提升器
CN110255347B (zh) * 2018-03-12 2021-11-23 J.施迈茨有限公司 用于管提升器的操作装置以及管提升器

Also Published As

Publication number Publication date
NL8902652A (nl) 1991-05-16

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