US3581873A - Endless magnetic conveyor - Google Patents

Endless magnetic conveyor Download PDF

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Publication number
US3581873A
US3581873A US750918A US3581873DA US3581873A US 3581873 A US3581873 A US 3581873A US 750918 A US750918 A US 750918A US 3581873D A US3581873D A US 3581873DA US 3581873 A US3581873 A US 3581873A
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US
United States
Prior art keywords
belt
magnetic
magnet system
conveyor device
endless conveyor
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
US750918A
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English (en)
Inventor
Heinrich Spodig
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Individual
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Individual
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Filing date
Publication date
Priority claimed from DE19671556183 external-priority patent/DE1556183C3/de
Application filed by Individual filed Critical Individual
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Publication of US3581873A publication Critical patent/US3581873A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B65G21/00—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors
    • B65G21/20—Means incorporated in, or attached to, framework or housings for guiding load-carriers, traction elements or loads supported on moving surfaces
    • B65G21/2009—Magnetic retaining means
    • B65G21/2018—Magnetic retaining means for retaining the load on the load-carrying surface
    • 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
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/15—Devices for holding work using magnetic or electric force acting directly on the work
    • B23Q3/154—Stationary devices
    • 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
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/15—Devices for holding work using magnetic or electric force acting directly on the work
    • B23Q3/154—Stationary devices
    • B23Q3/1546—Stationary devices using permanent magnets
    • 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
    • B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
    • B65G15/30—Belts or like endless load-carriers
    • B65G15/58—Belts or like endless load-carriers with means for holding or retaining the loads in fixed position, e.g. magnetic
    • 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
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/02—Articles

Definitions

  • Striker ABSTRACT Endless magnetic conveyor comprising a belt, a support structure therefore, a magnet system disposed in said support structure, and means for revolving said belt about said support structure, the belt being formed of a magnetic material and having an active cross section relative to the flux of said magnet system adapted to provide a magnetic stray flux over and above saturation so that a holding action may be exerted on articles placed on said belt.
  • the invention relates to an endless magnetic belt conveyor, such as are used in magnetic conveyors, wherein the belt revolves around a magnet system disposed in the support structure.
  • the magnetic field of force in this kind of device extends transversely to the direction of movement of the belt.
  • the belt in the conventional device is formed of a nonmagnetic material to prevent a short circuit of the magnet system by the belt which would cancelout the holding power of the system.
  • the magnetic lines of force in this kind of device penetrate the nonmagnetic material of the belt and the ferromagnetic articles which may be placed on the belt form the return conductor for the lines of force. These articles will be subject, more or less, to magnetic saturation depending on the mass of iron present in relation to the flux of the magnet system. The magnetic attraction is effected thus without direct contact between the article and the magnet system.
  • the lines of force must bridge the distance resulting from the thickness of the belt and its spacing from the magnet system. Accordingly, and depending on this distance, there takes place an only partial utilization of the available coercive force of holding power of the magnet system and the system must therefore be built to larger specification than would be necessary for the holding action proper.
  • the invention has the object to avoid these shortcomings of present endless conveyor belts for magnetic conveyors. It has in particular the object to improve the utilization of the holding power of the magnet system in a magnetic conveyor.
  • an endless magnetic conveyor comprising a belt, a support structure therefore, a magnet system disposed in said support structure, and means for revolving said belt about said support structure, the belt being formed of a magnetic material and having a mass and volume relative to the flux of said magnet system adapted to provide a magnetic stray flux over and above saturation so that a holding action may be exerted on articles placed on said belt.
  • the conveyor belt consist of a magnetic material, and that the belt is magnetized to saturation and that beyond this a magnetic field of force or stray flux be created-to efiect the holding action on the workpiece.
  • the conveyor belt in this device is in a partial magnetic short circuit and when the workpiece is placed in direct magnetic contact with the'belt the magnetic stray flux emanating from the belt is included through the workpiece in this partial magnetic short circuit.
  • FIG. 2 is a partial plan view, likewise in diagrammatic manner, of the belt consisting of linked plates employed in the conveyor of FIG. 1;
  • FIG. 3 is a partial plan view of another embodiment wherein links of steel wire are employed as the belt together with a roller chain drive mechanism;
  • FIG. 4 illustrates diagrammatically another embodiment of the invention wherein a sheet metal strip is employed as the belt
  • FIG. 5 illustrates, in diagrammatic manner, a similar embodiment as FIG. 4 but including a basefor the sheet metal strip;
  • FIG. 6 illustrates, in diagrammatic cross section, another embodiment of the invention wherein parts of rollers are used for the movement of the belt.
  • FIG. 7 is a similar illustration of a different embodiment wherein ball bearings are employed to support the belt.
  • the conveyor in conventional manner comprises a support structure consisting of two interconnected brackets l and 2 which carry the magnet system 15 providing for a north and south pole at the center of the travel path.
  • the belt 3 following the concept of the invention is formed of magnetic material and more specifically in the embodiment illustrated in FIGS. 1 and 2 in the form of individual slats 4 which are provided with a thin nonmagnetic base 5 and are interconnected by links 6.
  • the volume and mass of the belt 3 are selected in relation to the power of the magnet system to subject the belt section disposed at each particular moment of time above the magnet system to a partial magnetic circuit and to cause its magnetic saturation and beyond that to cause it to retain a magnetic field of force or stray flux.
  • This stray flux will form part of the partial short circuit formed across the ferromagnetic article placed on the belt. There is thus accomplished an improvement of the optimum magnetic flux and therefore a better utilization of the holding power of the magnet system.
  • This will in particular be noticeable in case of articles of small ferromagnetic cross section, such as, thin-walled tin cans. Such tin cans will be held safely on the conveyor even when filled.
  • FIG. 3 illustrates a different embodiment where wire mesh links 7 are employed instead of the conveyor consisting of slats 4.
  • the wire mesh may be driven by laterally provided roller chains 8.
  • FIG. 4 shows another embodiment with a belt formed of a sheet metal strip 9. The strip may either be directly imposed upon the magnet system or it may be provided with a nonmagnetic base 10 to reduce friction.
  • the base is shown in FIG. 5. It will be understood that the base may either be applied to the belt 3 or that it may be rigidly secured to the magnet system 15 as far as the latter extends.
  • FIG. 7 A similar structure is illustrated in FIG. 7 where, however, ball bearings are employed consisting of balls 12 and journals therefor in the magnet system 15.
  • the journals may also be in the general support structure.
  • the belt 3 must consist of magnetic material and must have an active ferromagnetic cross section relative to the magnetic flux of the magnet system 15 permitting the portion of the belt 3 above the magnet system 15 at each moment of time to maintain a stray field of force over and above its magnetic saturation.
  • An endless magnetic conveyor comprising a belt consisting of a nonmagnetic base and a magnetic sheet metal strip fastened to said nonmagnetic base, said belt having a width which is a multiple of its thickness and having an upper run provided with an upper support face adapted to support magnetizable articles thereon; a support structure supporting said belt; and a magnet system disposed in said support structure and located closely adjacent to and beneath said upper run for magnetic saturation of said magnetic sheet metal strip of said upper run of said belt to provide magnetic stray flux extending over said support face of said belt so as to exert a holding action on articles placed on said support face.
  • the endless conveyor device of claim 1 which includes rotating means for supporting said belt, the said rotating I means consisting of magnetic material and being supported in said magnet system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Belt Conveyors (AREA)
  • Structure Of Belt Conveyors (AREA)
US750918A 1967-08-10 1968-08-07 Endless magnetic conveyor Expired - Lifetime US3581873A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19671556183 DE1556183C3 (de) 1967-08-10 1967-08-10 Endloses Förderband für magnetische Förderer

Publications (1)

Publication Number Publication Date
US3581873A true US3581873A (en) 1971-06-01

Family

ID=5677134

Family Applications (1)

Application Number Title Priority Date Filing Date
US750918A Expired - Lifetime US3581873A (en) 1967-08-10 1968-08-07 Endless magnetic conveyor

Country Status (7)

Country Link
US (1) US3581873A (fr)
AT (1) AT288969B (fr)
BE (1) BE718496A (fr)
CH (1) CH473030A (fr)
FR (1) FR1572100A (fr)
GB (1) GB1163749A (fr)
NL (1) NL6811247A (fr)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760245A (en) * 1971-11-12 1973-09-18 H Halvorsen Magnetic conveyer system
US3871510A (en) * 1973-04-19 1975-03-18 Fmc Corp Magnetic conveyor structure
US3980173A (en) * 1975-10-02 1976-09-14 Owens-Illinois, Inc. Precision moving platform
US4051946A (en) * 1976-03-12 1977-10-04 Bucciconi Engineering Co., Inc. Magnetic conveyor
US4246867A (en) * 1973-04-26 1981-01-27 Xerox Corporation Xerographic developing system rolls having magnets of different widths
EP0062508A1 (fr) * 1981-04-02 1982-10-13 Inoue-Japax Research Incorporated Dispositif magnétique de fixation
US4526266A (en) * 1982-08-11 1985-07-02 Stewart Engineering & Equipment Co., Inc. Dual-T transfer conveyor
US4616796A (en) * 1981-07-23 1986-10-14 Inoue-Japax Research Incorporated Magnetic retainer assembly
US4925012A (en) * 1987-05-11 1990-05-15 Prazisions-Werkzeuge Ag Device for the positionally accurate transport of containers
US5027942A (en) * 1988-02-17 1991-07-02 Wallaart Jacobus J Chain conveyor
US5165527A (en) * 1990-03-20 1992-11-24 Regina Sud S.P.A. Chain conveyor
US5176247A (en) * 1991-08-12 1993-01-05 Rexnord Corporation Sideflexing conveyor chain including low centerline hinge pin
EP0978465A1 (fr) * 1998-08-06 2000-02-09 Griethe, Albert Appareil pour produire un mouvement linéaire de composants
EP0982243A2 (fr) * 1998-08-22 2000-03-01 Krones AG Transporteur en courbe pour emballages
EP0982246A1 (fr) * 1998-08-22 2000-03-01 Krones AG Système de transport pour emballages
US20050011733A1 (en) * 2002-07-03 2005-01-20 Junichi Imai Work fixing device
US20060037989A1 (en) * 2003-02-06 2006-02-23 Sms Demag Ag Device for transferring or threading beginnings of bands
US20090166158A1 (en) * 2006-08-03 2009-07-02 Dietmar Stoiber Revolving Device for a Conveyor Chain or a Conveyor Belt
US20140202833A1 (en) * 2011-10-06 2014-07-24 Ut-Battelle, Llc Mitigated-Force Carriage for High Magnetic Field Environments
CH711808A1 (de) * 2015-11-25 2017-05-31 Andritz Soutec Ag Verfahren zum Abladieren von beschichteten Werkstücken und eine Vorrichtung zur Durchführung des Verfahrens.
US20180022553A1 (en) * 2015-02-18 2018-01-25 Rexnord Flattop Europe S.R.L. Guide for chain for articles conveyor
US10850298B1 (en) 2016-05-06 2020-12-01 Madeline A. Kuchinski System for non-contact coating of moving component through a falling flow of coating material
CN112298907A (zh) * 2020-10-29 2021-02-02 奚尹莉 一种用于机械配件制造的配件输送装置
CN112623623A (zh) * 2020-12-17 2021-04-09 江西超联半导体科技有限公司 一种发光二极管生产用自动焊线机的进出料装置
CN112846851A (zh) * 2021-01-04 2021-05-28 张晓民 一种防变形薄壁管件的加工定位方法
US11607700B1 (en) 2016-05-06 2023-03-21 Madeline A. Kuchinski Method and apparatus for coating objects with minimal coating damage

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2444629B1 (fr) * 1978-12-21 1983-11-10 Gefra Bv Convoyeur a chaine
EP0077084B1 (fr) * 1981-10-14 1985-03-20 Werkzeugmaschinenfabrik Oerlikon-Bührle AG Coffre à munitions, en particulier magasin en forme de tambour

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881901A (en) * 1956-06-13 1959-04-14 Homer Mfg Co Inc Magnetic conveyor
US3308925A (en) * 1965-09-21 1967-03-14 Diamond Power Speciality Feed means for magnetic conveyor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881901A (en) * 1956-06-13 1959-04-14 Homer Mfg Co Inc Magnetic conveyor
US3308925A (en) * 1965-09-21 1967-03-14 Diamond Power Speciality Feed means for magnetic conveyor

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760245A (en) * 1971-11-12 1973-09-18 H Halvorsen Magnetic conveyer system
US3871510A (en) * 1973-04-19 1975-03-18 Fmc Corp Magnetic conveyor structure
US4246867A (en) * 1973-04-26 1981-01-27 Xerox Corporation Xerographic developing system rolls having magnets of different widths
US3980173A (en) * 1975-10-02 1976-09-14 Owens-Illinois, Inc. Precision moving platform
US4051946A (en) * 1976-03-12 1977-10-04 Bucciconi Engineering Co., Inc. Magnetic conveyor
EP0062508A1 (fr) * 1981-04-02 1982-10-13 Inoue-Japax Research Incorporated Dispositif magnétique de fixation
US4616796A (en) * 1981-07-23 1986-10-14 Inoue-Japax Research Incorporated Magnetic retainer assembly
US4526266A (en) * 1982-08-11 1985-07-02 Stewart Engineering & Equipment Co., Inc. Dual-T transfer conveyor
US4925012A (en) * 1987-05-11 1990-05-15 Prazisions-Werkzeuge Ag Device for the positionally accurate transport of containers
US5027942A (en) * 1988-02-17 1991-07-02 Wallaart Jacobus J Chain conveyor
US5165527A (en) * 1990-03-20 1992-11-24 Regina Sud S.P.A. Chain conveyor
US5176247A (en) * 1991-08-12 1993-01-05 Rexnord Corporation Sideflexing conveyor chain including low centerline hinge pin
EP0978465A1 (fr) * 1998-08-06 2000-02-09 Griethe, Albert Appareil pour produire un mouvement linéaire de composants
EP0982243A2 (fr) * 1998-08-22 2000-03-01 Krones AG Transporteur en courbe pour emballages
EP0982246A1 (fr) * 1998-08-22 2000-03-01 Krones AG Système de transport pour emballages
EP0982243B1 (fr) * 1998-08-22 2003-11-26 Krones AG Transporteur en courbe pour emballages
US20050011733A1 (en) * 2002-07-03 2005-01-20 Junichi Imai Work fixing device
US6957734B2 (en) * 2002-07-03 2005-10-25 Nisshinbo Industries, Inc Work fixing device
US20060037989A1 (en) * 2003-02-06 2006-02-23 Sms Demag Ag Device for transferring or threading beginnings of bands
US20080047998A1 (en) * 2003-02-06 2008-02-28 Sms Demag Ag Device for transferring or threading beginnings of a band
US20090166158A1 (en) * 2006-08-03 2009-07-02 Dietmar Stoiber Revolving Device for a Conveyor Chain or a Conveyor Belt
US7694804B2 (en) * 2006-08-03 2010-04-13 Siemens Aktiengesellschaft Revolving device for a conveyor chain or a conveyor belt
US20140202833A1 (en) * 2011-10-06 2014-07-24 Ut-Battelle, Llc Mitigated-Force Carriage for High Magnetic Field Environments
US9035733B2 (en) * 2011-10-06 2015-05-19 Ut-Battelle, Llc Mitigated-force carriage for high magnetic field environments
US20180022553A1 (en) * 2015-02-18 2018-01-25 Rexnord Flattop Europe S.R.L. Guide for chain for articles conveyor
US10093486B2 (en) * 2015-02-18 2018-10-09 Rexnord Flattop Europe S.R.L. Guide for chain for articles conveyor
CH711808A1 (de) * 2015-11-25 2017-05-31 Andritz Soutec Ag Verfahren zum Abladieren von beschichteten Werkstücken und eine Vorrichtung zur Durchführung des Verfahrens.
US10850298B1 (en) 2016-05-06 2020-12-01 Madeline A. Kuchinski System for non-contact coating of moving component through a falling flow of coating material
US11607700B1 (en) 2016-05-06 2023-03-21 Madeline A. Kuchinski Method and apparatus for coating objects with minimal coating damage
CN112298907A (zh) * 2020-10-29 2021-02-02 奚尹莉 一种用于机械配件制造的配件输送装置
CN112623623A (zh) * 2020-12-17 2021-04-09 江西超联半导体科技有限公司 一种发光二极管生产用自动焊线机的进出料装置
CN112846851A (zh) * 2021-01-04 2021-05-28 张晓民 一种防变形薄壁管件的加工定位方法
CN112846851B (zh) * 2021-01-04 2022-05-10 山东华舜重工集团有限公司 一种防变形薄壁管件的加工定位方法

Also Published As

Publication number Publication date
DE1556183A1 (de) 1970-01-29
GB1163749A (en) 1969-09-10
FR1572100A (fr) 1969-06-20
DE1556183B2 (de) 1975-05-22
BE718496A (fr) 1968-12-31
AT288969B (de) 1971-03-25
CH473030A (de) 1969-05-31
NL6811247A (fr) 1969-02-12

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