US3361469A - Fluid pressure controlled holding device for a lift unit - Google Patents

Fluid pressure controlled holding device for a lift unit Download PDF

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Publication number
US3361469A
US3361469A US554526A US55452666A US3361469A US 3361469 A US3361469 A US 3361469A US 554526 A US554526 A US 554526A US 55452666 A US55452666 A US 55452666A US 3361469 A US3361469 A US 3361469A
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US
United States
Prior art keywords
lift unit
cup
holding device
vacuum
lift
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
Application number
US554526A
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English (en)
Inventor
Jr Herbert W Yeager
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.)
ThyssenKrupp Budd Co
Original Assignee
Budd Co
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 Budd Co filed Critical Budd Co
Priority to US554526A priority Critical patent/US3361469A/en
Priority to GB18567/67A priority patent/GB1114029A/en
Priority to FR104317A priority patent/FR1521022A/fr
Priority to DE1506492A priority patent/DE1506492C3/de
Application granted granted Critical
Publication of US3361469A publication Critical patent/US3361469A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B66C1/0256—Operating and control devices
    • 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
    • B66C1/0256—Operating and control devices
    • B66C1/0268—Venturi effect

Definitions

  • This invention relates to a lifting device and more particularly to a holding device for a lifting unit controlled by a uid under pressure.
  • An object of this invention is to provide a vacuum lift device operable by a pressurized uid for rapid activation and deactivation.
  • Another object of this invention is to provide a lift unit having a flexible cup operable by a pressurized fluid controlled by a solenoid and having sn-ap-in connections for rapid and easy replacement of a faulty unit.
  • a further object of this invention is to provide a resilient bumper adjacent the ilexible suction cup for cushioning the contact between the lift unit and the material Ito be moved for preven-ting localized deformation of the material to be moved.
  • Another object of this invention is to provide Ia lift system in which pressurized fluid is used to create a vacuum for holding an object and also is used to destroy the vacuum it created and exert pressure against the held object to repel it upon command.
  • FIG. l is a front View of this novel invention prior to contact with the material to be moved and prior to activation of the lift unit.
  • FIG. 2 is a view in the direction of the arrows, substantial-ly along the line 2-2 of FIG. 1, showing the solenoid energized and the suction cup in contact with the material to be moved.
  • FIG. 3 is a view of the lift unit situated for movement into the mounting position on a lift arm of a transfer unit.
  • a lift unit is located adjacent a lift arm 12 of a transfer unit (not shown).
  • the lift arm 12 has coupling 14 connected to a source of fluid under pressure.
  • pressurized air is used.
  • a conventional bayonet type removable air connector having the female portion 16 secured in the lift ann 12 and connected to the pressurized air and the male portion 18 secured to the lift unit 10, is used for ease and rapidity of connecting the lift unit to the lift ann.
  • a pair of female plugs 20 are secured in the lift arm 12 and connected to for cooperating with a pair of male plugs 22, 23 mounted in the lift unit 10.
  • the lift unit 10 includes a body portion 24 having a contact portion 26 secured thereto by a plural-ity of bolts 28.
  • One or more spacer plates 30 may be positioned between the body portion 24 and the contact head 26, as desired to accommodate the various heights of the unit for ldifferent applications.
  • a resilient contact ring 32 preferably of rubber or plastic is secured to the outer edge of the contact head 26.
  • a commercially available vacuum cup assembly 34 is threadably secured in a threaded aperture 36 extending through the Contact head 26.
  • the vacuum cup assembly 34 includes a resilient cup portion 36 having an laperture 38 in t-ne center thereof connecting the cup portion 36 with the hollow threaded portion 40.
  • a solenoid 42 is secured to the body portion 24 by screws 44 or other suitable means.
  • the electrical leads 46, 48 from the solenoid are connected to the male plugs 22, 23 for actuation of the solenoid 42, upon command, when the lift unit 10 is mounted in operating position on the lift arm 12.
  • a spring 50 biases the plunger 52 to the extended position shown in FIG. 1 and is compressed by the action of the plunger 52 when the solenoid is actuated, as shown in FIG. 2.
  • the air passage 54 connects the pressurized air from connector 18, to a venturi sleeve 56, thread'ab'ly secured in a tubular cavi-ty 58, of the body 24.
  • the venturi sleeve 56 includes an inlet passage 60, a funnel shaped outlet passage 62, having its smaller end connected to said inlet and a reduced section 64, the reduced section 64 cooperates with the walls of the cavity 58 to form an annular chamber 66, which is positioned about the juncture of the inlet passage 60 and the outlet passage 62.
  • a plurality of air passages or outlets 68 extend from the juncture of the inlet and outlet passages to the chamber 66.
  • a stopper or plug 72 is secured to the plunger 52 of the solenoid 42, for movement into contact with the larger end of the outlet passage 62, when the solenoid is not energized, whereby the stopper 72 effectively blocks escape of pressurized air from the outlet.
  • the plunger 52 overcomes the biasing action of spring 50 and moves the stopper 72 from contact with outlet 62, thus allowing the pressurized air to escape therefrom.
  • the solenoid 42 is energized by manual controls or automatic controls, such as a microswitch positioned for contact with the lift arm during its movement.
  • the plunger 52 and stopper 72 move to the position shown in FIG. 2.
  • the pressurized air iiows from its source through the couplings 16, 18 and the air passage 54 to the inlet passage 60 of the venturi sleeve 56.
  • the pressurized air passes through the venturi sleeve 56 from the inlet passage 60 through the outlet passage 62 to the atmosphere.
  • venturi effect of such passage creates a reduced pressure at the juncture at the inlet 60 and outlet 62 passages causing air to be drawn from the chamber 66, through air passages 68, and a vacuum is created by such venturi action in said chamber.
  • the vacuum thus created extends through air passage 70 to the vacuum cup assembly 34, and when the cup 36 contacts an object, such as the at plate 74, the reduced pressure within the cup 36 and the atmospheric pressure on the plate 74, opposite the cup provides a force differential acting on the plate for moving the plate 74 into contact with the contact ring 22, in the position shown in FIG. 2.
  • a person skilled in the art can easily calculate the relative size of air passages 68, inlet passage 610, outlet passage 62, and cup 34 for given conditions of air pressure and the Weight of the object to be moved by the unit.
  • the solenoid is deenergized thus the plunger 52 and the stopper 72 are returned to the position shown in FIG. l, at which time the escape of the pressurized air from outlet 62 is blocked.
  • the travel of the pressurized air then will flow from the inlet 66, through the air passages 68 to the chamber 66, and through passage 76 to the vacuum cup assembly 34.
  • the vacuum therein is changed to a pressurized area greater than atmospheric pressure and the plate 74 is forced by suchpressure away from ring 32, and cup 36, thus releasing and forcing the plate from the lift unit.
  • a holding device for a lift unit including means for attaching said lift unit to a movable arm -for movement therewith, a source of fluid under pressure; a venturi sleeve having an inlet, a plurality of outlets, said inlet being connected to said pressurized uid source for passage of said pressurized fluid therethrough; stopper means for controlling the ow of said pressurized fluid from said outlets upon command, flow of said pressurized uid through one of said outlets creating reduced pressure in said other outlet; a chamber connected to said other outlet, a fluid passage extending from said chamber, a vacuum cup assembly operably conneted to said uid passage, said vacuumcup assembly including a exible cup portioned for contacting a surface, said cup portion having a reduced pressure of less than atmospheric pressure therein when said presurized fluid passes through said one outlet -for using atmospheric pressureto -urge and Vhold said vacuum cup assembly and said surface into closer contact; resilient means for limiting movement in one direction between said surface and said holding unit;
  • said resilient means for limiting movement between said holding device and said held surface includes a resilient material attached to said holding device and spaced from said vacuum cup a ldistance great enough to permit actuation of said cup during application at a vacuum thereto.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manipulator (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
  • Load-Engaging Elements For Cranes (AREA)
US554526A 1966-06-01 1966-06-01 Fluid pressure controlled holding device for a lift unit Expired - Lifetime US3361469A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US554526A US3361469A (en) 1966-06-01 1966-06-01 Fluid pressure controlled holding device for a lift unit
GB18567/67A GB1114029A (en) 1966-06-01 1967-04-21 Fluid pressure controlled holding device for a lift unit
FR104317A FR1521022A (fr) 1966-06-01 1967-04-26 Dispositif de levage à ventouse
DE1506492A DE1506492C3 (de) 1966-06-01 1967-05-30 Greifvorrichtung für Gegenstände

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US554526A US3361469A (en) 1966-06-01 1966-06-01 Fluid pressure controlled holding device for a lift unit

Publications (1)

Publication Number Publication Date
US3361469A true US3361469A (en) 1968-01-02

Family

ID=24213703

Family Applications (1)

Application Number Title Priority Date Filing Date
US554526A Expired - Lifetime US3361469A (en) 1966-06-01 1966-06-01 Fluid pressure controlled holding device for a lift unit

Country Status (3)

Country Link
US (1) US3361469A (de)
DE (1) DE1506492C3 (de)
GB (1) GB1114029A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3696596A (en) * 1970-03-23 1972-10-10 Stanley C Wegscheid Watermelon harvesting device
US4050729A (en) * 1976-04-20 1977-09-27 Hutson Clifford L Apparatus for handling delicate articles such as silicon wafers
FR2549550A1 (fr) * 1983-07-20 1985-01-25 France Etat Armement Ventouse sous-marine du type a depression par aspiration
WO1996009962A1 (en) * 1994-09-28 1996-04-04 Tetra Laval Holdings & Finance S.A. Vacuum system
US6467825B1 (en) * 1998-03-13 2002-10-22 Pronomic Ab Vacuum ejector with a number of suction cups
US20060033349A1 (en) * 2001-11-08 2006-02-16 Dong-Hyo Shin Vacuum chuck device
US11207792B2 (en) 2017-02-07 2021-12-28 Weber Maschinenbau Gmbh Breidenbach Gripper, cutting apparatus and method for cutting a product

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2852681C3 (de) * 1978-12-06 1981-11-12 Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen Saugglockenträger
US4453755A (en) * 1982-08-06 1984-06-12 Leland F. Blatt Vacuum cup venturi assembly and blow off silencer
JPS60175800A (ja) * 1984-02-21 1985-09-09 Miyoutoku:Kk エゼクタポンプ
GB9017791D0 (en) * 1990-08-14 1990-09-26 Portsmouth Tech Consult Vacuum gripper devices
GB9224041D0 (en) * 1992-11-16 1993-01-06 Portsmouth Tech Consult Vaccum gripper devices

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2654013A (en) * 1952-06-03 1953-09-29 Weston Electrical Instr Corp Slide wire device for recorders
US2874989A (en) * 1955-04-27 1959-02-24 Ingersoll Rand Co Control for hoists
US3039623A (en) * 1958-03-10 1962-06-19 Sehn Automatic press material handling apparatus
US3063746A (en) * 1960-03-23 1962-11-13 Pittsburgh Plate Glass Co Universal vacuum cup

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2654013A (en) * 1952-06-03 1953-09-29 Weston Electrical Instr Corp Slide wire device for recorders
US2874989A (en) * 1955-04-27 1959-02-24 Ingersoll Rand Co Control for hoists
US3039623A (en) * 1958-03-10 1962-06-19 Sehn Automatic press material handling apparatus
US3063746A (en) * 1960-03-23 1962-11-13 Pittsburgh Plate Glass Co Universal vacuum cup

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3696596A (en) * 1970-03-23 1972-10-10 Stanley C Wegscheid Watermelon harvesting device
US4050729A (en) * 1976-04-20 1977-09-27 Hutson Clifford L Apparatus for handling delicate articles such as silicon wafers
FR2549550A1 (fr) * 1983-07-20 1985-01-25 France Etat Armement Ventouse sous-marine du type a depression par aspiration
WO1996009962A1 (en) * 1994-09-28 1996-04-04 Tetra Laval Holdings & Finance S.A. Vacuum system
US5603599A (en) * 1994-09-28 1997-02-18 Tetra Laval Holdings & Finance S.A. Vacuum system
US6467825B1 (en) * 1998-03-13 2002-10-22 Pronomic Ab Vacuum ejector with a number of suction cups
US20060033349A1 (en) * 2001-11-08 2006-02-16 Dong-Hyo Shin Vacuum chuck device
US11207792B2 (en) 2017-02-07 2021-12-28 Weber Maschinenbau Gmbh Breidenbach Gripper, cutting apparatus and method for cutting a product

Also Published As

Publication number Publication date
GB1114029A (en) 1968-05-15
DE1506492C3 (de) 1982-04-01
DE1506492A1 (de) 1969-08-07
DE1506492B2 (de) 1981-06-25

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