US3827548A - Belt conveyor for sheet material - Google Patents

Belt conveyor for sheet material Download PDF

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Publication number
US3827548A
US3827548A US00343382A US34338273A US3827548A US 3827548 A US3827548 A US 3827548A US 00343382 A US00343382 A US 00343382A US 34338273 A US34338273 A US 34338273A US 3827548 A US3827548 A US 3827548A
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United States
Prior art keywords
chambers
belt
orifice
pump
outer portion
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
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US00343382A
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English (en)
Inventor
M Matsuo
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Individual
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Individual
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Publication of US3827548A publication Critical patent/US3827548A/en
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    • 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
    • B65H3/12—Suction bands, belts, or tables moving relatively to the pile
    • B65H3/124—Suction bands or belts
    • B65H3/126—Suction bands or belts separating from the bottom of pile
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86501—Sequential distributor or collector type

Definitions

  • This invention relates to a belt conveyor, and particularly to a conveyor for cardboard blanks and like pieces of sheet material which need to be held to the conveyor belt by suction.
  • limit switches sense the presence or absence of sheet material on the conveyor belt, and they are connected with solenoid valves in the vacuum lines to the individual chambers through relays to connect the vacuum pump only to selected chambers.
  • Relay and solenoid coils cause a time lag between the actuation of the limit switch and the opening of the valve, which lag is unavoidable and not acceptable at very high conveyor speeds.
  • limit switches relay for operativeness on freedom from contaminants not always capable of being achieved under the conditions common in box manufacturing plants, and the known electrically operated vacuum controls for belt conveyors of the type described require relatively frequent preventive maintenance operations even if their relatively sluggish response is acceptable.
  • the object of the invention is the provision of a suction-type conveyor in which proper synchronization between the evacuation of the suction chambers and the movement of the conveyor belt is achieved at all practical conveyor speeds and with great reliability over extended periods of operation without requiring overhaul or other maintenance of the vacuum controls.
  • the invention provides a conveyor of the type described with a rotary valve interposed between the suction pump and the vacuum chambers under the conveyor belt which sequentially connect the pump to the chambers.
  • a common drive motor is connected to the belt and to the valve for moving the belt in a closed loop and for sequentially connecting the chambers to the pump in timed sequence.
  • the rotary valve includes an outer shell having an axis and formed with ports angularly distributed relative to the axis. conduits respectively connect the ports to the chambers, and a rotor mounted in the housing shell for rotation about the axis of the latter by the drive motor defines an exhaust conduit having two orifices of which one sequentially sweeps the ports during rotation while the other orifice is connected to the pump.
  • the performance characteristics of the vacuum system may be adapted to various conveyed materials by adjusting the circumferential width of the exhaust conduit orifice, and by thereby varying the number of simultaneously evacuated chambers.
  • FIG. 1 shows a conveyor of the invention in side elevation, and partly in section, and the associated pneumatic circuit in a conventional manner
  • FIG. 2 illustrates a valve in the circuit of FIG. 1 in side elevational section
  • FIGS. 3 and 4 are front elevational sections of the valve of FIG. 2 taken on the lines III-III and IVIV respectively;
  • FIG. 5 shows the valve of FIG. 2 in rear elevational section on the Line V-V.
  • an endless conveyor belt 10 trained over four pulleys 12.
  • One of the pulleys 12 is driven by an electric motor 14 and draws the belt 10 horizontally over the open tops of a row of ten contiguously justaposed suction chambers 16.
  • the major faces of the belt 10 are connected by a multiplicity of perforations, and the orifices of the perforations in the bottom face of the belt communicate with the chambers 16 when traveling over the same.
  • the chambers 16 are sequentially connected with a vacuum pump 18 by two sections 20, 22 of a rotary distributor valve more fully illustrated in FIGS. 2 to 5, each section having five suction ports 24 respectively connected with associated chambers 16 by pipes 26.
  • the valve sections 20, 22 are coupled to the motor 14 and the driven guide pulley 12 for synchronous operation.
  • the distributor valve as shown in FIG. 2, has an outer cylindrical shell 28 fixedly mounted on the supporting frame 30 of the belt conveyor which also carries the pulleys 12 in a known manner, not shown.
  • Axially spaced ball bearings 32 in the shell 28 support the valve rotor which includes a partly hollow shaft 34.
  • the solid axial end portion of the shaft 34 is coupled to the motor 14 by a gear transmission 36 including bevel gears 38 on the shaft 34 and on the ouput shaft of the transmission whose input shaft is coupled to the motor 14 in an analogous manner.
  • Two flanged sleeves 40, 42 carry the inner races of the ball bearings 32 and are rotatably mounted on the shaft 34.
  • the sleeve on the solid end portion of the shaft 34 projects from the shell 28 and carries a clutch disc 44 axially slidable on the sleeve 40, but secured against rotation by a key 46.
  • the disc 44 is held in driving connection with the flange 48 fixed on the shaft 34 by a fork 50 engaging a circumferential groove in the disc 44 in a manner not specifically shown but well known in clutch disengaging mechanisms of automotive friction clutches.
  • the fork 50 is pivotally mounted on the frame 30 and operated by means of a double-acting hydraulic or pneumatic cylinder 52 which is also mounted on the frame 32 and manually controlled in a conventional manner, not shown.
  • a worm wheel 54 normally rotates freely on the sleeve 40 when a worm 55 journaled in the frame 30 is turned by means of a non-illustrated handwheel.
  • the clutch disc 44 may be engaged with the worm wheel 54 by means of the cylinder 52, friction facings being provided on the axially opposite, radial engagement faces of the wheel 54, the disc 44, and the flange 48.
  • the tubular part of the shaft 34 has an internal annular shoulder 56 which separates an inner portion 58 of the bore in the shaft 34 from an outer, wider bore portion.
  • a coaxial tube 60 fixedly sealed in the shoulder 56 and the wider, tubular, axial portion of the shaft 34 radially bound an annular conduit 62.
  • the tube 60 axially projects beyond the shaft 34 through a cap 64 on the shell 28 and into a chamber 66.
  • the tube 60 is slidably sealed in the cap 64 whose cavity 68 freely communicates with the conduit 62.
  • Respective radial openings 70, 72 in the tubular portion of the shaft 34 connect the bore portion 58 and the conduit 62 with respective axial portions of the space between the shaft 34 and the shell 28 which are separated from each other by an annular disc-shaped partition 74.
  • Suction lines 76, 78 respectively lead from the cavity 68 and the chamber 66 to the pump 18.
  • two vanes 80, 82 are attached to the hollow portion of the shaft 34 by screws 84 on opposite axial sides of the partition 74.
  • Two corresponding vanes 86, 88 are mounted on respective pairs of axial bolts 90 between the partition 74 and the flanges of the sleeves 40, 42 so that the flanges are axially connected by the bolts 90 and the partition 74 into a fixedly connected portion of the rotor which is normally coupled to the shaft 34 by the clutch disc 44 for joint rotation.
  • the rotor thus defines two exhaust conduits of which one extends from the suction line 78 through the chamber 66, the tube 60, the bore portion 58, the opening 70 to an orifice circumferentially bounded by the vanes 80, 86 and axially bounded by the flange of the sleeve 40 and the partition 74.
  • the other exhaust conduit extends from the suction line 76 through the cavity 68, the annular conduit 62, the opening 72, to its orifice between the vanes 82, 88, the flanged sleeve 42 and the partition 74.
  • the partition axially separates the two groups of five ports 24 of the respective valve sections 22, 22' arranged in the upper half of the cylindrical shell 28, the lower half being imperforate.
  • the openings 70, 72 respectively associated with the valve sections and the associated orifices are offset 180 relative to the axis of rotation of the shaft 34 so that the orifices of the two exhaust conduits sweep the ten ports 24 consecutively and at uniform intervals during each revolution of the shaft 34.
  • the orifices are wide enough only to connect one port 24 and the associated chamber 16 at one time to the pump 18, and the shaft 34 is synchronized with the pulleys 12 in such a manner that the belt progresses at the same rate as the vacuum in the row of chambers 16. If a relatively light and stiff piece of cardboard 92 is presented to the conveyor as is indicated in FIG.
  • the front end of the piece as viewed in the direction of belt movement, is attached to the belt 10 by the vacuum in a subjacent chamber 16 and travels thereafter with the belt, its front end being held in contact with the belt by the vacuum produced by the pump 18.
  • the vacuum gradually decays by leakage in the chambers shut off from the pump by the rotary distribution valve, and the piece of cardboard is ultimately discharged from the conveyor belt 10 and free to be grasped by the feed mechanism of the next machine in the production line, not itself shown.
  • valve arrangement illustrated and described has been found more reliable than the combination of limit switches and solenoid valves employed heretofore. Its initial performance is better at high conveying speeds than that of the best available electromagnetic systems, and its durability is very great since it is immune to contaminants and does not rely for operativeness on absolutely tight seals between the moving valve parts. It need not be built to extremely close tolerances, and is not subject to deterioration by wear over long periods.
  • the division of the rotary valve into two sections 20, 22 respectively controlled by the vanes 80, 86 and the vanes 82, 88 permits dynamic balancing of the valve rotor in a manner not readily achieved otherwise, and essential for high-speed operation.
  • a conveyor comprising, in combination:
  • a perforated, elongated, endless belt having two opposite major faces and being formed with a multiplicity of perforations connecting said faces;
  • valve means including 6 1. an outer shell having an axis and formed with a said one orifice,
  • clutch means normally coupling said outer poran exhaust conduit having two orifices, one of tion to said inner portion for joint rotation, and said orifices sequentially sweeping said ports during said rotation, the other orifice being con- 5.
  • clutch disengaging means for disengaging said nected to said pump, said rotor having a radially 1O clutch means during said angular moving of said inner portion and a radially outer portion carryouter portion. ing respecive vanes circumferentially bounding

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Structure Of Belt Conveyors (AREA)
  • Belt Conveyors (AREA)
  • Multiple-Way Valves (AREA)
  • Making Paper Articles (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
US00343382A 1972-09-11 1973-03-21 Belt conveyor for sheet material Expired - Lifetime US3827548A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9034072A JPS552362B2 (enrdf_load_stackoverflow) 1972-09-11 1972-09-11

Publications (1)

Publication Number Publication Date
US3827548A true US3827548A (en) 1974-08-06

Family

ID=13995777

Family Applications (1)

Application Number Title Priority Date Filing Date
US00343382A Expired - Lifetime US3827548A (en) 1972-09-11 1973-03-21 Belt conveyor for sheet material

Country Status (5)

Country Link
US (1) US3827548A (enrdf_load_stackoverflow)
JP (1) JPS552362B2 (enrdf_load_stackoverflow)
FR (1) FR2199321A5 (enrdf_load_stackoverflow)
GB (1) GB1384828A (enrdf_load_stackoverflow)
IT (1) IT989254B (enrdf_load_stackoverflow)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4580937A (en) * 1983-03-04 1986-04-08 E. C. H. Will (Gmbh & Co.) Apparatus for back stripping stacks of paper sheets or the like
US4645069A (en) * 1985-11-12 1987-02-24 Quipp, Incorporated Vacuum accumulating conveyor
US4672792A (en) * 1984-03-14 1987-06-16 Sprinter System Ab Arrangement in a sealing machine
US4697973A (en) * 1986-01-21 1987-10-06 Adolph Coors Company Apparatus and method for handling folded cartons
US4745283A (en) * 1984-10-16 1988-05-17 Fuji Photo Film Co., Ltd. Stimulable phosphor sheet transfer apparatus which includes first and second suction boxes separately connected to a section blower and a pair of buffer tanks
US4773522A (en) * 1985-02-12 1988-09-27 Meyer Conveyair, Inc. Vacuum deadplate
US4792249A (en) * 1985-09-20 1988-12-20 Creative Associates Limited Partnership Vacuum paper transport system for printer
GB2234725A (en) * 1989-08-04 1991-02-13 British Res Agricult Eng Multi-section conveyor assembly
US5163891A (en) * 1991-12-19 1992-11-17 Langston Staley Corporation Box forming machine having a vacuum belt top conveyor
US5373933A (en) * 1993-11-09 1994-12-20 Tomra Systems A/S Conveyor with variable suction force
US5531313A (en) * 1994-05-07 1996-07-02 Heidelberger Druckmaschinen Ag Device for conveying a continuous shingled sheet stream
DE19625470A1 (de) * 1996-06-26 1998-01-02 Bielomatik Leuze & Co Verfahren und Vorrichtung zur Förderung von Gegenständen
DE19636160A1 (de) * 1996-09-06 1998-03-12 Nsm Magnettechnik Gmbh Bandfördereinrichtung für die hängende Beförderung von Transportgütern mit Unterdruck
EP0888992A3 (de) * 1997-07-01 1999-04-14 MAN Roland Druckmaschinen AG Anlegetisch zum taktmässigen Fördern von Bogen zu einer Bogen verarbeitenden Maschine
US6206591B1 (en) * 1999-07-12 2001-03-27 Riso Kagaku Corporation Sheet carrying device
US6481565B1 (en) * 2000-09-26 2002-11-19 Bernard J. Sherwood Conveyor system with pneumatic transfer
US20040060801A1 (en) * 2001-01-31 2004-04-01 Norbert Vogel Device and method for conveying work pieces
US20050156376A1 (en) * 2004-01-19 2005-07-21 Kondratuk John J. Self-valving vacuum distribution for a belt-driven sheet conveyor
US7125014B2 (en) 2001-04-26 2006-10-24 Heidelberger Druckmaschinen Ag Device for conveying a stream of sheets from a sheet pile to a sheet-processing machine
WO2011000678A1 (en) * 2009-06-30 2011-01-06 Eastman Kodak Company Sheet transport device
CN103708254A (zh) * 2013-12-31 2014-04-09 株洲三新包装技术有限公司 风箱组负压抽风装置及瓦楞纸板水性印刷机
CN107032163A (zh) * 2017-04-22 2017-08-11 广州明森科技股份有限公司 一种纸带输送装置
US9904259B2 (en) 2011-04-05 2018-02-27 Kawasaki Jukogyo Kabushiki Kaisha Plate member reversing system and reversing/transfer method thereof
US12345341B2 (en) 2021-04-16 2025-07-01 Zhejiang Sanhua Automotive Components Co., Ltd. Control valve

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142273A (en) * 1977-11-04 1979-03-06 Rheem Manufacturing Company Stuffing horn construction for sausage making machine
AT385257B (de) * 1984-09-10 1988-03-10 Andritz Ag Maschf Einrichtung zum stabilisieren von auf ein transportband aufgebrachtes loses stueckgut bzw. loses koerniges gut
JP2744018B2 (ja) * 1988-07-12 1998-04-28 キヤノン株式会社 シート搬送装置
FR2674834B1 (fr) * 1991-04-03 1993-07-30 Darchis Pierre Dispositif d'extraction un a un d'objets plats a partir d'une pile de tels objets, notamment des enveloppes de lettres.
WO1998049084A2 (de) * 1997-04-30 1998-11-05 Siemens Aktiengesellschaft Vorrichtung zum transportieren von stückgut mittels eines transportbandes
DE102008017753B4 (de) * 2008-04-07 2010-04-22 Markus Eble Transportvorrichtung zum Führen und Ablegen von Tafeln

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2818881A (en) * 1953-05-21 1958-01-07 Ohio Commw Eng Co Sequential punching apparatus
US3202302A (en) * 1962-06-20 1965-08-24 Saint Gobain Corp Vacuum transfer conveyor
US3608895A (en) * 1969-10-02 1971-09-28 Gaf Corp Electropneumatic flat product shuffling and packaging system
US3707991A (en) * 1971-04-12 1973-01-02 J Shapiro Remote controlled valve for irrigation systems
US3750832A (en) * 1970-02-16 1973-08-07 B Ovarnstrom Sowing machine for dispensing seeds unto seed beds

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4912785U (enrdf_load_stackoverflow) * 1972-04-28 1974-02-02

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2818881A (en) * 1953-05-21 1958-01-07 Ohio Commw Eng Co Sequential punching apparatus
US3202302A (en) * 1962-06-20 1965-08-24 Saint Gobain Corp Vacuum transfer conveyor
US3608895A (en) * 1969-10-02 1971-09-28 Gaf Corp Electropneumatic flat product shuffling and packaging system
US3750832A (en) * 1970-02-16 1973-08-07 B Ovarnstrom Sowing machine for dispensing seeds unto seed beds
US3707991A (en) * 1971-04-12 1973-01-02 J Shapiro Remote controlled valve for irrigation systems

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4580937A (en) * 1983-03-04 1986-04-08 E. C. H. Will (Gmbh & Co.) Apparatus for back stripping stacks of paper sheets or the like
US4672792A (en) * 1984-03-14 1987-06-16 Sprinter System Ab Arrangement in a sealing machine
US4745283A (en) * 1984-10-16 1988-05-17 Fuji Photo Film Co., Ltd. Stimulable phosphor sheet transfer apparatus which includes first and second suction boxes separately connected to a section blower and a pair of buffer tanks
US4773522A (en) * 1985-02-12 1988-09-27 Meyer Conveyair, Inc. Vacuum deadplate
US4792249A (en) * 1985-09-20 1988-12-20 Creative Associates Limited Partnership Vacuum paper transport system for printer
US4645069A (en) * 1985-11-12 1987-02-24 Quipp, Incorporated Vacuum accumulating conveyor
US4697973A (en) * 1986-01-21 1987-10-06 Adolph Coors Company Apparatus and method for handling folded cartons
GB2234725A (en) * 1989-08-04 1991-02-13 British Res Agricult Eng Multi-section conveyor assembly
US5163891A (en) * 1991-12-19 1992-11-17 Langston Staley Corporation Box forming machine having a vacuum belt top conveyor
US5373933A (en) * 1993-11-09 1994-12-20 Tomra Systems A/S Conveyor with variable suction force
US5531313A (en) * 1994-05-07 1996-07-02 Heidelberger Druckmaschinen Ag Device for conveying a continuous shingled sheet stream
DE19625470A1 (de) * 1996-06-26 1998-01-02 Bielomatik Leuze & Co Verfahren und Vorrichtung zur Förderung von Gegenständen
US5971134A (en) * 1996-06-26 1999-10-26 Bielomatik Leuze Gmbh & Co. Method and apparatus for conveying articles
DE19636160A1 (de) * 1996-09-06 1998-03-12 Nsm Magnettechnik Gmbh Bandfördereinrichtung für die hängende Beförderung von Transportgütern mit Unterdruck
EP0888992A3 (de) * 1997-07-01 1999-04-14 MAN Roland Druckmaschinen AG Anlegetisch zum taktmässigen Fördern von Bogen zu einer Bogen verarbeitenden Maschine
US6206591B1 (en) * 1999-07-12 2001-03-27 Riso Kagaku Corporation Sheet carrying device
US6481565B1 (en) * 2000-09-26 2002-11-19 Bernard J. Sherwood Conveyor system with pneumatic transfer
US6823986B2 (en) * 2001-01-31 2004-11-30 Schuler Automation Gmbh & Co. Kg Device and method for conveying work pieces
US20040060801A1 (en) * 2001-01-31 2004-04-01 Norbert Vogel Device and method for conveying work pieces
DE10213705B4 (de) * 2001-04-26 2014-07-03 Heidelberger Druckmaschinen Ag Vorrichtung zum Fördern eines Bogenstroms von einem Bogenstapel zu einer bogenverarbeitenden Maschine
DE10213705C5 (de) * 2001-04-26 2017-01-05 Heidelberger Druckmaschinen Ag Vorrichtung zum Fördern eines Bogenstroms von einem Bogenstapel zu einer bogenverarbeitenden Maschine
US7125014B2 (en) 2001-04-26 2006-10-24 Heidelberger Druckmaschinen Ag Device for conveying a stream of sheets from a sheet pile to a sheet-processing machine
WO2005073115A1 (en) * 2004-01-19 2005-08-11 Marquip, Llc Self-valving vacuum distribution for a belt-driven sheet conveyor
US7296792B2 (en) 2004-01-19 2007-11-20 Marquip, Llc Self-valving vacuum distribution for a belt-driven sheet conveyor
US20050156376A1 (en) * 2004-01-19 2005-07-21 Kondratuk John J. Self-valving vacuum distribution for a belt-driven sheet conveyor
WO2011000678A1 (en) * 2009-06-30 2011-01-06 Eastman Kodak Company Sheet transport device
US8544842B2 (en) 2009-06-30 2013-10-01 Eastman Kodak Company Sheet transport device
US9904259B2 (en) 2011-04-05 2018-02-27 Kawasaki Jukogyo Kabushiki Kaisha Plate member reversing system and reversing/transfer method thereof
CN103708254A (zh) * 2013-12-31 2014-04-09 株洲三新包装技术有限公司 风箱组负压抽风装置及瓦楞纸板水性印刷机
CN103708254B (zh) * 2013-12-31 2017-01-04 株洲三新包装技术有限公司 风箱组负压抽风装置及瓦楞纸板水性印刷机
CN107032163A (zh) * 2017-04-22 2017-08-11 广州明森科技股份有限公司 一种纸带输送装置
US12345341B2 (en) 2021-04-16 2025-07-01 Zhejiang Sanhua Automotive Components Co., Ltd. Control valve

Also Published As

Publication number Publication date
DE2326524A1 (de) 1974-03-28
JPS552362B2 (enrdf_load_stackoverflow) 1980-01-19
GB1384828A (en) 1975-02-26
DE2326524B2 (de) 1975-12-11
FR2199321A5 (enrdf_load_stackoverflow) 1974-04-05
IT989254B (it) 1975-05-20
JPS4948076A (enrdf_load_stackoverflow) 1974-05-09

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