US3545595A - Control device for a two section belt conveyor - Google Patents

Control device for a two section belt conveyor Download PDF

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Publication number
US3545595A
US3545595A US731856A US3545595DA US3545595A US 3545595 A US3545595 A US 3545595A US 731856 A US731856 A US 731856A US 3545595D A US3545595D A US 3545595DA US 3545595 A US3545595 A US 3545595A
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US
United States
Prior art keywords
imbricated
belt
sequence
conveyor
newspapers
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
US731856A
Other languages
English (en)
Inventor
Walter Reist
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.)
Ferag AG
Ferag Fehr and Reist AG
Original Assignee
Ferag AG
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 Ferag AG filed Critical Ferag AG
Application granted granted Critical
Publication of US3545595A publication Critical patent/US3545595A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/66—Advancing articles in overlapping streams
    • 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
    • B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
    • 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
    • B65G37/00—Combinations of mechanical conveyors of the same kind, or of different kinds, of interest apart from their application in particular machines or use in particular manufacturing processes
    • 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
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • 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
    • B65G2811/00—Indexing codes relating to common features for more than one conveyor kind or type
    • B65G2811/06—Devices controlling the relative position of articles
    • B65G2811/0673—Control of conveying operations
    • B65G2811/0689—Releasing constant material flow
    • B65G2811/0694—Releasing constant material flow for permanently occupying the conveyor path
    • 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
    • B65G2811/00—Indexing codes relating to common features for more than one conveyor kind or type
    • B65G2811/09—Driving means for the conveyors
    • B65G2811/091—Driving means for the conveyors the conveyor type being irrelevant
    • B65G2811/093—Control means for automatic stop, start or warning variation during conveying operations
    • 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
    • B65G2812/00—Indexing codes relating to the kind or type of conveyors
    • B65G2812/01—Conveyors composed of several types of conveyors
    • B65G2812/012—Conveyors composed of several types of conveyors for conveying material successively by a series of conveyors
    • B65G2812/013—Conveyors composed of several types of conveyors for conveying material successively by a series of conveyors without relative movement between conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • B65H2701/1932—Signatures, folded printed matter, newspapers or parts thereof and books

Definitions

  • a control device for a two-section belt conveyor particularly for transporting newspapers in a continuous imbricated or overlapping formation comprises feeling device for detecting a gap in the continuous formation and an electric control circuit including switching means actuated upon detection of a gap in the continuous formation for stopping the leading portion of the continuous formation until the gap has been filled up by the continuously advancing lagging portion of the continuous formation.
  • the invention relates to a control device for a two-section belt conveyor for maintaining a gapless conveying sequence of articles aligned in imbricated formation, particularly newspapers.
  • a package laying-out device which piles up newspapers supplied in imbricated arrangement to packages.
  • a package laying-out device comprises an incoming belt having its own drive, on which newspapers from the delivery station are deposited by a delivery belt.
  • the incoming imbricated sequence is braked, causing the newspapers to slide one upon the other to a pile.
  • a feeling device is arranged at the junction area between two successive conveyor belts to detect interruptions in the imbricated arrangement, and a switching device .is interposed in the drive of that conveyor belt which is first in transporting direction, said switching device being controlled by the feeling device and being operative upon a detected interruption, to stop said first conveyor belt for a determined time, a step being provided in the level of the travelling path between the first and second conveyor belts, so that the beginning of the lagging portion of the imbricated sequence is pushed by the moving second belt onto the end of the leading portion of the imbricated sequence on the stopped first conveyor belt during its stopping period, until the gap in the imbricated sequence is filled up.
  • FIG. 1 diagrammatically represents the junction areas between two conveyor belts with a gap detected by the feeler device in the imbricated sequence of newspapers;
  • FIG. 2 diagrammatically represents the procedure of filling of the gap
  • the conveyor belt 1 which is the first in conveying direction shall be for example the incoming belt of a package laying-out device for newspapers, and the second conveyor belt 2 shall be the delivery belt of a receiving station.
  • the driving shaft of the incoming belt 1 is coupled with the driving motor 4 by means of an electromagnetic coupling 3.
  • the drive of the incoming belt I is so formed that upon disengagement the belt is stopped almost instantaneously.
  • the two conveying belts I and 2 carry an imbricated formation of newspapers 5, which at a certain place presents a gap, and accordingly it is interrupted.'
  • FIG. 1 In FIG.
  • a light barrier 11 having a light source 12 and a photoelectric cell 13 as a feeling device for detecting interruptions is arranged at the junction area 6 between the two conveyor belts 1 and 2.
  • Light source 12 and photoelectric cell 13 are so aligned that the diaphragmmasked light beam 14, upon an interruption in the imbricated sequence, is received by the photoelectric cell 13 and is interrupted by the newspapers sliding through the junction area. When an interruption occurs, a signal will be emitted by the photoelectric cell 13.
  • the photoelectric cell 13 is connected to a control circuit 15.
  • the control circuit comprises output terminals 16 to which is connected the electromagnetic coupling 3 arranged in the drive of the incoming belt 1.
  • control circuit 15 When the control circuit 15 receives an input signal from the photoelectric cell 13, i.e., when the light barrier detects the beginning of an interruption in the imbricated sequence, then the control circuit 15 causes disengagement of the electromagnetic coupling 3 and the incoming belt 1 is stopped, while the delivery belt 2 continues to move and conveys the lagging portion of the imbricated sequence further on. When the first newspaper 10 of this portion arrives at the junction area 6 scanned by the light barrier 11, the light beam 14 is interrupted by this newspaper. Without the provision of special expedients the electromagnetic coupling would now be engaged and accordingly the incoming belt set in motion again, without the desired gapless imbricated sequence having been attained.
  • this reengagement is made independent of the disappearing input signal in the control circuit 15.
  • Different means are possible for obtaining this.
  • the procedure of filling the gap in the imbricated sequence could be supervised by a second light barrier which effects engagement of the coupling when the first newspaper 10 of the lagging portion 9 of the imbricated sequence has been pushed in correct positiononto the last newspaper 8 of the leading portion 7 of the imbricated sequence.
  • Such or similar means is relatively expensive, but has the advantage that it is independent of the speed of the delivery belt 2, the width of the existing gap and the breadth of the folded newspapers. In fact, the incoming belt 1 must be stopped for a determined time dependent on these three factors.
  • the reengagement of the electromagnetic coupling 3 accordingly can also be effected directly by a determination of time, and for this purpose the control circuit 15 contains a time member. Since in the practical operation, at least for a prolonged time, the travelling speed of the delivery belt is sufficiently constant, and the width of the folded newspapers does not vary, it is sufficient in most cases, for the time switch existing in the control circuit 15 to be actuated by the scanning light barrier 11, upon disappearance of the signal, i.e., at the moment when the light beam is intercepted by the newspaper 10. After expiration of the adjusted time the newspaper 10 is correctly positioned on the newspaper 8, and the time switch engages the electromagnetic coupling 3.
  • the means which shall be used for reengagement of the coupling 3 depend on the prevailing conditions and precision requirements. With high speed machines it is convenient to use a digital time switch.
  • a step 17 is provided in the level of the travelling path of the first and second conveyor belts.
  • the second conveyor belt 2 is disposed slightly higher than the first conveyor belt 1.
  • an adjustable ramp can be provided with the second conveyor belt, which ramp easily adapts to the thickness of the newspapers, or generally to the articles transported.
  • this ramp can be made movable, its actuation being controlled by the control circuitin such manner that the ramp, upon disengagement of the electromagnetic coupling, is turned up and upon reengagement of the coupling is retracted to its original position.
  • FIG. 2 shows diagrammatically the imbricated succession with the filled up interruption.
  • the light beam 14 of the light barrier 11 is interrupted by the newspapers 5 and both conveyor belts, the incoming belt and the delivery belt travel with approximately the same speed.
  • the light barrier 11 responds and effects the stopping of the incoming belt 1
  • the delivery belt 2 continues the conveying of the imbricated sequence and pushes the lagging portion of the imbricated sequence on the resting portion 8 of the imbricated sequence
  • the first newspaper 10 interrupting the signal upon arriving at the light barrier and due to this interruption the coupling is reengaged after a certain time delay.
  • feeler instead of the light barrier, obviously other suitable feelers could be used, for example a mechanical feeler actuated by the imbricated formation, which feeler actuates an electric contact when agap occurs in the imbricated sequence.
  • a mechanical feeler actuated by the imbricated formation which feeler actuates an electric contact when agap occurs in the imbricated sequence.
  • the control circuit then does not actuate a coupling, for example a contactor.
  • the formation of the control circuit is dependent on the type of feeler device used. For light barriers, generally an amplifier will have to be included in the control circuit.
  • An apparatus for conveying articles comprising first and second conveyor belts, each adapted for transporting articles in imbricated relation, first and second drive means for driving respective belts, said first conveyor belt being adjacent said second belt for transferring articles in imbricated succession, sensing means for detecting any interruption in the imbricated succession of the articles before the articles are transferred to the second belt, and switching means coupling said sensing means with said second drive means for momentarily stopping said second drive means and said conveyor belt when said interruption in said imbricated succession of articles arrives between the first and second belts to cause said first conveyor belt to continue to deposit said articles on said conveyor belt and restore an uninterrupted imbricated succession of articles.
  • a control device according to claim 1 wherein said sensing means includes a light barrier.
  • sensing means is positioned to detect interruptions in said imbricated succession as they arrive between the first and second belts.
  • An apparatus as claimed in claim 1 including timing means coupled with said sensing means for acting on said switching means to activate said second drive means after a predetermined period after restoration of an uninterrupted imbricated succession of articles, said restoration being detected by said sensing means to operate said timing means.
  • a control device according to claim 5 wherein said timing means is adjustable.
  • a control device according to claim 5 wherein said timing means is a digital time switch.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Packaging Of Special Articles (AREA)
US731856A 1967-05-26 1968-05-24 Control device for a two section belt conveyor Expired - Lifetime US3545595A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH746567A CH454736A (de) 1967-05-26 1967-05-26 Steuereinrichtung an einem zweigliedrigen Bandförderer

Publications (1)

Publication Number Publication Date
US3545595A true US3545595A (en) 1970-12-08

Family

ID=4325534

Family Applications (1)

Application Number Title Priority Date Filing Date
US731856A Expired - Lifetime US3545595A (en) 1967-05-26 1968-05-24 Control device for a two section belt conveyor

Country Status (5)

Country Link
US (1) US3545595A (de)
CH (1) CH454736A (de)
DE (1) DE1756320A1 (de)
GB (1) GB1201525A (de)
SE (1) SE309749B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5135962A (de) * 1974-07-19 1976-03-26 Pitney Bowes Inc
JPS53145270A (en) * 1977-05-12 1978-12-18 Oppenweiler Gmbh Maschinenbau Apparatus for stacking sheets
US4268200A (en) * 1977-11-24 1981-05-19 Womako Maschinenkonstruktionen Gmbh Apparatus for stacking note books or the like
US4526266A (en) * 1982-08-11 1985-07-02 Stewart Engineering & Equipment Co., Inc. Dual-T transfer conveyor
US5465825A (en) * 1992-11-27 1995-11-14 Finmeccanica S.P.A. Mail flow compensating device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105417013A (zh) * 2015-12-05 2016-03-23 重庆市恒固席勒装饰工程有限公司 交叉式摆杆运输装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5135962A (de) * 1974-07-19 1976-03-26 Pitney Bowes Inc
JPS53145270A (en) * 1977-05-12 1978-12-18 Oppenweiler Gmbh Maschinenbau Apparatus for stacking sheets
US4245832A (en) * 1977-05-12 1981-01-20 Maschinenbau Oppenweiler Gmbh Apparatus for the stacking of sheets
US4268200A (en) * 1977-11-24 1981-05-19 Womako Maschinenkonstruktionen Gmbh Apparatus for stacking note books or the like
US4369015A (en) * 1977-11-24 1983-01-18 Womako Maschinenkonstruktionen Gmbh Apparatus for stacking note books or the like
US4526266A (en) * 1982-08-11 1985-07-02 Stewart Engineering & Equipment Co., Inc. Dual-T transfer conveyor
US5465825A (en) * 1992-11-27 1995-11-14 Finmeccanica S.P.A. Mail flow compensating device

Also Published As

Publication number Publication date
GB1201525A (en) 1970-08-05
SE309749B (de) 1969-03-31
DE1756320A1 (de) 1970-04-02
CH454736A (de) 1968-04-15

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