US3550759A - Apparatus for transporting tobacco or the like - Google Patents

Apparatus for transporting tobacco or the like Download PDF

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Publication number
US3550759A
US3550759A US742622A US3550759DA US3550759A US 3550759 A US3550759 A US 3550759A US 742622 A US742622 A US 742622A US 3550759D A US3550759D A US 3550759DA US 3550759 A US3550759 A US 3550759A
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United States
Prior art keywords
gate
outlet
belt
portions
speed
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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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US742622A
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English (en)
Inventor
Udo Von Papen
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.)
Koerber AG
Original Assignee
Hauni Werke Koerber and Co KG
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Filing date
Publication date
Application filed by Hauni Werke Koerber and Co KG filed Critical Hauni Werke Koerber and Co KG
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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
    • B65G65/00—Loading or unloading
    • B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
    • B65G65/34—Emptying devices
    • B65G65/40—Devices for emptying otherwise than from the top
    • B65G65/42—Devices for emptying otherwise than from the top using belt or chain conveyors

Definitions

  • a transporting apparatus for shredded tobacco which comprises a vibrating chute having a bottom wall provided with an outlet for gravity flow of tobacco therethrough.
  • the outlet can be closed by an endless belt or chain having an upper stringer which is rolled against the bottom wall in a direction from the upstream end toward the downstream end of the outlet at a speed which at least equals but preferably exceeds the speed of tobacco travel in the chute so that the belt reaches the downstream end of the outlet ahead of the front end of the tobacco stream. This prevents the belt from pinching particles of tobacco between its upper stretch and the bottom wall of the chute at the downstream end of the outlet.
  • the present invention relates to apparatus for transporting flowable materials, particularly for. transporting shredded tobacco, textile fibers and other types of fibrous substances which can form a stream. Still more particularly, the invention relates to improvements in closures or gateswhich are utilized toexpose or close outlets in conveyors of such transporting apparatus.
  • Shredded tobacco is often transported in vibrating chutes or troughs having a outlet through which the material can descend by gravity to enter the magazine of a rod cigarette machine or another tobacco consuming machine.
  • the outlet can be exposed or closed by a platelike gate of sheet metal or the like which is movable with reference to the chute and can be reciprocated by a drive which is mounted on the chute.
  • a drawback of such apparatus is that the gate is likely to pinch some tobacco shreds against the chute at the downstream end of the outlet, as considered in the direction of material flow. The thus entrapped particles interfere with orderly flow of material past and beyond the closed outlet.
  • Another object of the invention is to provide a novel gate for use in the just outlined apparatus.
  • a further object of the invention is to provide a gate which can be mounted on or used in connection with existing vibrating troughs, chutes or like conveyors for shredded tobacco or analogous flowable materials.
  • An additional object of the invention is to provide a gate which occupies little room and comprises a small number of simple parts.
  • the improved transporting apparatus comprises conveyor means defining an elongated path in which shredded tobacco or other flowable solid material is conveyed in a predetermined direction at a first speed and having outlet means through which the material can be evacuated from an intermediate portion of the. path, and a gate movable with reference to the conveyor means between a closed position in which it closes the outlet means and an open position in which it exposes at least a portion of the outlet means.
  • the gate includes a closing member having a succession of portions which more into registry with portions of the outlet means during movement of the gate from open to closed position to thereby reduce the effective area of the outlet means in'the direction of material travel at a second speed which at least equals but preferably exceeds the first speed. In this way, the outlet means is closed before the leading end of the thus intercepted material in the conveyor means reaches the downstream end of the outlet means.
  • the closing member may be an endless belt or chain or a belt or chain of finite length whose upper stretch may but need not be coupled to the conveyor means and which is trained over rollers movable back and forth with reference to the conveyo'r means.
  • FIG. 1 is a schematic partly elevational and partly sectional view of a transporting apparatus which embodies one form of the invention, the gate being shown in open position;
  • FIG. 2 is a similar view of the apparatus but showing the gate in an intermediate position
  • FIG. 3 is a similar view but showing the gate in closed position
  • FIG. 4 is a partly elevational andvpartly sectional view of the apparatus but showing further details of the gate and of its drive, the gate being shown in closed position;
  • FIG. 5 is a bottom plan view of the structure shown in FIG. 4, with a portion of the gate broken away;
  • FIG. 6 is a transverse vertical sectional view asseen in the direction of arrows from the line VI-VI of FIG. 4; and 7 FIG; 7 is a fragmentary longitudinal vertical sectional view of a second transporting apparatus.
  • the means for vibrating the chute 7 is of conventional design and is not shown in the drawing.
  • the bottom wall 70 of the chute 7 has an elongated opening or outlet 11 whose front end or downstream end is flanked by a substantially vertical transverse edge face 16.
  • the bottom wall 7a may but need not be inclined with reference to a horizontal plane.
  • the gate of the transporting apparatus comprises a closing means here shown as an endless beltor band 1 of plastic or thin metallic sheet material which is trained around rollers 2, 3 mounted on horizontal shafts 4, 6.
  • the distance A between the axes of the shafts 4, 6 is fixed and the upper stretch of the belt 1 is secured to the chute 7, as at B.
  • the drive which moves the gate between open and closed positions comprises a doubleacting hydraulic or pneumatic cylinder 8 and a piston rod 9 which is coupled to the gate, preferably in a manner which will be described later with reference to FIGS. 4 to 6.
  • the numeral 14 denotes the front end of the belt 1 and the character C denotes the direction in which the gate must be movedby the piston rod 9 from open to closed position,
  • the distanceA at least equals the length of the outlet 11.
  • FIG. 1 illustrates the gate in fully open position.
  • the front end 14 of the belt 1 is located directly below or slightly to the left of the left-hand end of the outlet 11 so that the particles of the tobacco stream 13 can descend'by gravity to accumulate in the magazine 12.
  • the cylinder 8 is caused to displace the piston rod 9 in the direction indicated by arrow C whereby. the entire gate (including the belt 1, rollers 2, 3 and shafts 4, 6 but not the point B where the belt is coupled to the bottom wall 7a) moves in a direction to the right and at a speed which at least equals but preferably exceeds the speed of the tobacco stream 13.
  • the belt 1 can be replaced by a link chain or by an apron conveyor without departing from the spirit of my invention.
  • the gate need not be suspended on the chute 7 but may be mounted on a separate frame.
  • the drive including the cylinder 8 and piston rod 9.
  • the belt 1 need not be affixed to the chute 7, i.e., its upper stretch can be affixed to another part of the apparatus so that a portion of such upper stretch remains stationary when the rollers 2, 3 move back and forth to deform the belt 1 at both sides of the point B.
  • FIGS. 4 to 6 illustrate in greater detail a transporting apparatus which utilizes the parts shown in FIGS. 1 to 3.
  • Such parts are denoted by similar numerals, i.e., the numeral 1 again denotes a closing belt and the numerals 2, 3 and 4,6 respectively denote two rollers and two shafts.
  • the end portions of the shafts 4,6 are mounted in two lateral frame members or cheeks 17, 18 which form part of a reciprocable carriage or dolly.
  • the latter further comprises transversely extending distancing beams 19, 21 having bearings 22, 23 for two pairs of wheels or runners 24, 26 travelling along rails or ways 27, 28 secured to the bottom wall 7a or to another part of the chute 7.
  • the front end of the piston rod 9 is secured to the carriage by a coupling 29.
  • the cylinder 8 is a pneumatic cylinder and has two chambers located at the opposite sides of a piston 34 which is affixed to the trailing end of the piston rod 9.
  • the two chambers respectively communicate with conduits 32, 33 which can be connected to a source of compressed gas by a system of valves which are not shown in the drawing.
  • the cylinder 8 is secured to the chute 7 by brackets 37, 38.
  • FIGS. 4 to 6 illustrate the gate in closed position.
  • the aforementioned system of valves connects the conduit 32 with the atmosphere and admits compressed gas by way of the conduit 33 so that the piston 34 moves to the left, as viewed in FIG. 4, and entrains the carriage and the belt l in the same direction by way of the piston rod 9.
  • the operator connects the conduit 33 with the atmosphere and admits compressed gas into the conduit 32.
  • the upper stretch of the belt 1 is propped from below, i.e., opposite the outlet 11, by longitudinally extending supports 36 which extend between the transverse frame members 19, 21.
  • the cylinder 8 is preferably mounted at a level below the belt 1 so that the latter can move into the space between the cylinder and the bottom wall 7a when the gate is moved toward open position.
  • the outlet 11 is then exposed and the flowable material (not shown) is free to descend into a magazine which is not illustrated in FIGS. 4 to 6.
  • the belt 1 is coupled to the bottom wall 7a, as at B, so that it can roll itself against or away from the outlet 11.
  • This auxiliary drive comprises a crossed belt 141 which is trained over a pulley on the front shaft 106 and over a pulley on the shaft 142 of the front wheels 126.
  • the belt 141 causes the roller 103 to rotate in a counterclockwise direction when the carriage with the belt 101 and wheels 126 is caused to move in a direction to the right, as viewed in FIG.
  • the auxiliary drive may comprise a separate prime mover; however, the arrangement shown in FIG. 7 is preferred because the roller 103 is rotated automatically in response to movement of the gate to closed position.
  • the front roller 103 forms part of the auxiliary drive.
  • the speed at which the upper stretch of the belt 101 is driven during movement of the gate toward closed position at least equals but preferably exceeds the speed of the tobacco stream in the path defined by the chute 107.
  • a combination comprising conveyor means defining an elongated path in which the material is conveyed in a predetermined direction at a first speed, said conveyor means having outlet means through which the material can be evacuated from said path; a gate movable between open and closed positions in which it respectively exposes and closes said out let means, said gate including deformable closing means hav-' ing a succession of portions which travel in said predetermined direction into registry with portions of said outlet means during movement of the gate toward closed position to thereby reduce the effective area of said outlet means; and drive means for moving said portions of said closing means into registry with said outlet means at a second speed which at least equals said first speed and for terminating the movement of said portions in said predetermined direction not later than when such portions register with said outlet means.
  • said conveyor means comprises a vibrating chute having a bottom wall and said outlet means is an opening in said bottom wall.
  • said closing means comprises a flexible member having an elongated stretch and said succession of portions form part of said stretch.
  • said flexible member is an endless flexible member and said gate further comprises rollers and a reciprocable carriage for said rollers, said flexible member being trained over said rollers.
  • said stretch of said flexible member is fixed to said conveyor means at a point located upstream of said outlet means as considered in said predetermined direction and wherein said gate further comprises deforming means for shortening said stretch upstream of said point and for simultaneously lengthening said stretch downstream of said point and along said outlet means in response to movement of said gate toward closed position,
  • said g te further comprises a carriage which is reciprocable along said outlet means and a pair of rollers mounted in said carriage at a distance from each other which at least equals the length of said outlet means as considered in said direction, said closing means comprising a flexible member which is trained over said rollers and said drive means being connected with said carriage.
  • said drive means comprises a fluid-operated cylinder and piston assembly.
  • a combination comprising conveyor means defining an elongated path in which the material is conveyed in a predetermined direction at a first speed, said conveyor means having outlet means through which the material can be evacuated from said path; a gate movable between open and closed positions in which it respectively exposes and closes said outlet means, said gate including closing means having a succession of portions which travel in said predetermined direction into registry with portions of said outlet means during movement of the gate toward closed position to thereby reduce the effective area of said outlet means, a carriage reciprocable along said outlet means, a pair of rollers mounted in said carriage at a distance from each other which at least equals the length of said outlet means asconsidered in said direction, said closing means comprising a flexible member which is trained over said rollers, and means for supporting said flexi ble member opposite said outlet means; and drive means connected with said carriage for moving said portions of said closing means into registry with portions of said outlet means at a second speed which
  • a combination comprising conveyor means defin-' ing an'elongated path in which the material is conveyed in a predetermined-direction at a first speed, said conveyor means including a bottom wall provided with outlet means through which the material can be evacuated from said path; a gate movable between open and closed positions in which it respectively exposes and closes said outlet means, said gate including an endless flexible member comprising an elongated stretch having a succession of portions which travel in said predetermined direction into registry with portions of said outlet means during movement of the gate toward closed position to thereby reduce the effective area of said outlet means, said gate further comprising rollers and a reciprocable carriage for said rollers, said flexible member being trained over said rollers and having an upper stretch which is adjacent to the underside of said bottom wall and forms part of said conveyor means on movement of said gate from open position; and drive means for moving said portions of said first-mentioned stretch into registry with portions of said outlet means at
  • a combination comprising conveyor means defining an elongated path in which the material is conveyed in a predetermined direction at a first speed, said conveyor means having outlet means through which the material can be evacuated from said path; a gate movable between open and closed positions in which it respectively exposes and closes said outlet means, said gate including a flexible member comprising an elongated stretch having a succession of portions which travel in said predetermined direction into registry with portions of said outlet means during movement of the gate toward closed position to thereby reduce the effective area of said outlet means; drive means for moving said portions of said stretch into registry with portions of said outlet means at a second speed which at least equals said first speed; and auxiliary drive means for transporting said portions of said stretch in a second direction counter to said predetermined direction during movement of said gate from open'toward closed position.
  • auxiliary drive means is arranged to transport said portions of said flexible member at a speed which exceeds said first speed.
  • said flexible member is an endless flexible member and said gate further comprises rollers at least one of which forms part of said auxiliary drive means, said flexible member being trained over said rollers.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
US742622A 1967-07-22 1968-07-05 Apparatus for transporting tobacco or the like Expired - Lifetime US3550759A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH0063357 1967-07-22

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US3550759A true US3550759A (en) 1970-12-29

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US (1) US3550759A (xx)
DE (1) DE1531977A1 (xx)
GB (1) GB1208977A (xx)
NL (1) NL6805172A (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3731787A (en) * 1970-11-16 1973-05-08 V Gregor Modular distributor system for bulk material
DE2944006A1 (de) * 1978-11-01 1980-05-08 Molins Ltd Foerderanlage fuer stabfoermige gegenstaende
US4553660A (en) * 1978-11-01 1985-11-19 Molins Plc Handling rod-like articles
US4869483A (en) * 1987-06-12 1989-09-26 Siemens Aktiengesellschat Patient support apparatus
US6505727B2 (en) * 2001-04-26 2003-01-14 Intersystems, A Division Of Enduro Systems, Inc. Slide gate for a conveyor system
US20030127302A1 (en) * 2001-01-31 2003-07-10 Brewer Marvin Vincent Regulatory gate system for product drop off of vibratory conveyors

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6378688B1 (en) * 1999-02-17 2002-04-30 Paul A Svejkovsky Proportional gate mechanism for a conveyor and method
US9567163B2 (en) * 2014-02-21 2017-02-14 Paul A. Svejkovsky In-line adjustable gate

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3731787A (en) * 1970-11-16 1973-05-08 V Gregor Modular distributor system for bulk material
DE2944006A1 (de) * 1978-11-01 1980-05-08 Molins Ltd Foerderanlage fuer stabfoermige gegenstaende
US4553660A (en) * 1978-11-01 1985-11-19 Molins Plc Handling rod-like articles
US4869483A (en) * 1987-06-12 1989-09-26 Siemens Aktiengesellschat Patient support apparatus
US20030127302A1 (en) * 2001-01-31 2003-07-10 Brewer Marvin Vincent Regulatory gate system for product drop off of vibratory conveyors
US6505727B2 (en) * 2001-04-26 2003-01-14 Intersystems, A Division Of Enduro Systems, Inc. Slide gate for a conveyor system

Also Published As

Publication number Publication date
DE1531977A1 (de) 1969-09-25
NL6805172A (xx) 1969-01-24
GB1208977A (en) 1970-10-14

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