US3548995A - Controlled variable speed stacking device for publication conveyor - Google Patents

Controlled variable speed stacking device for publication conveyor Download PDF

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Publication number
US3548995A
US3548995A US736673A US3548995DA US3548995A US 3548995 A US3548995 A US 3548995A US 736673 A US736673 A US 736673A US 3548995D A US3548995D A US 3548995DA US 3548995 A US3548995 A US 3548995A
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Prior art keywords
stack
stacking
support members
support member
stacking region
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US736673A
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English (en)
Inventor
Samuel Oderman
Raymond L Wiseman
Geroge T Rushforth
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Sta-Hi Corp
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Sta-Hi Corp
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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
    • B65H31/00—Pile receivers
    • B65H31/04—Pile receivers with movable end support arranged to recede as pile accumulates
    • B65H31/12—Devices relieving the weight of the pile or permitting or effecting movement of the pile end support during piling
    • B65H31/18—Positively-acting mechanical devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/28—Bands, chains, or like moving receivers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H33/00—Forming counted batches in delivery pile or stream of articles
    • B65H33/16—Forming counted batches in delivery pile or stream of articles by depositing articles in batches on moving supports
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S414/00—Material or article handling
    • Y10S414/10—Associated with forming or dispersing groups of intersupporting articles, e.g. stacking patterns
    • Y10S414/102—Associated with forming or dispersing groups of intersupporting articles, e.g. stacking patterns including support for group
    • Y10S414/103—Vertically shiftable
    • Y10S414/105—Shifted by article responsive means

Definitions

  • ABSTRACT A series of support members are driven in a continuous path downwardly through a stacking region to a lower end thereof and then upwardly to return to an upper end thereof.
  • publications are received from a more or less continuous stream building stacks thereon for deposit at the stacking region lower end.
  • Sensing means senses the stack upper extremity during stack buildup and controls the feed of downward movement of the particular support member to maintain the stack upper extremity within a predetermined vertical distance range from the stacking region upper end during said stack buildup.
  • the sensing means may include a safety switch arranged to override other control and temporarily provide maximum speed of support member downward movement in the event the stack upper extremity reaches a predetermined maximum vertical position during stack buildup.
  • BACKGROUND OF THE INVENTION ing generalcharacter incorporating a unique speed control device controlling the speed of downward movement of each of the support members during the publication stack building thereon so as to coordinate the speed of support member downward movement withthe speedof stack buildup and always maintain the upper extremity of the particular stack during said buildup within. a predetermined vertical distance range of the continuous stream of publicationsbeing intercepted by that support member.
  • the principles of the present invention make possible the building of publication stacks on the moving support members in a much more perfectly arranged and orderly stack than has ever been heretofore possible with prior stacking devices, despitethe required high-speed operation of said stacking devices.
  • the support member upon which the publication stack is being built must move downwardly within the stacking region well ahead of. the infeeding publication stream and be stopped intions entering the stacking region to drop freely downwardly an appreciable distance for reaching the stack upper extremity with consequent disarrangement of the stack. buildup.
  • sensing means is arranged for automatically sensing the speed of stack buildup on each support member as said support member progresses downwardly through the stacking region receiving the publications from the infeeding publication stream, said sensing means in turn automatically controlling the support member downward speed for maintaining the upper extremity of the particular stack being built within the predetermined vertical distance range of the infeeding publication stream.
  • sensing means is arranged for automatically sensing the speed of stack buildup on each support member as said support member progresses downwardly through the stacking region receiving the publications from the infeeding publication stream, said sensing means in turn automatically controlling the support member downward speed for maintaining the upper extremity of the particular stack being built within the predetermined vertical distance range of the infeeding publication stream.
  • a preferred embodiment of the present invention includes variable electrical transducer means operable through a sensing member constantly engaged with the publication stack upper extremity during the buildup of said stack, movements of said sensing member creating variations in said transducer means.
  • the transducer means is also electrically connected to electric drive means for the support members and arranged for variations in the transducer means to be translated into variations in electrical power to the electric drive means, thereby varying the speed of drive to the particular support member upon which the stack is then being built to perfectly control the location of the stack upper extremity during such buildup.
  • Such safety device may take on the form of a safety switch operable by the sensing member in the event the particular stack upper extremity reaches a maximum vertical position within the predetermined vertical distance range, said safety switch being operably connected for overriding or bypassing the control of the support member speed by the transducer means and automatically directing a maximum of electrical power to the electric drive means so as to drive said support member at a maximum speed downwardly.
  • FIG. 1 is a side elevational view of a stacking device incorporating an embodiment of the speed controlling sensing means of the present invention
  • FIG. 2 is an enlarged, fragmentary, vertical sectional view of an upper portion of the stacking device of FIG. 1 looking in the direction of the arrows 2-2 in FIG. 3 and more clearly illustrating the particulars of the sensing means of FIG. I;
  • FIG. 3 is a fragmentary, sectional view looking in the direction of the arrows 3-3 in FIG. 2;
  • FIG. 4 is an enlarged, fragmentary, sectional view looking in the direction of the arrows 4-4 in FIG. 3;
  • FIG. 5 is a vertical sectional view looking in the direction of the arrows 5-5 in FIG. 1.
  • a stacking device for publication conveyors includes a main frame generally indicated at 10 supporting an infeed conveyor section generally indicated at 12, a stacking section generally indicated at 1 4 and an outfeed conveyor section generally indicated at I6.
  • the stacking device includes sensing means generally indicated at 18 forming an illustrative embodiment of the principles of the present invention supported on the main frame 10 between the inner termination of the infeed conveyor section 12 and the entrance into the stacking section 14.
  • sensing means generally indicated at 18 forming an illustrative embodiment of the principles of the present invention supported on the main frame 10 between the inner termination of the infeed conveyor section 12 and the entrance into the stacking section 14.
  • the infeed conveyor section 12 is connected to a usual publication conveyor 20 for receiving therefrom a continuous stream of imbricated publications through said infeed conveyor section between usual upper conveyor belts 22 and lower conveyor belts '24.
  • the infeed conveyor section 12 directs the continuous stream of imbricated publications slightly angularly downwardly into an upper end of a stacking region generally indicated at 26 forming a part of the stacking section 14.
  • the continuous stream of imbricated publications is continuously and consecutively intersected by a series of publication stack support members generally indicated at 28 and movable in a continuous path around the stacking section 14 and particularly, downwardly through the stacking region 26 of said stacking section.
  • the support members -38' may be positioned at the stacking region upper end posed ready for entrance downwardly into said stacking region, or in the converse, one of the support members 38 may be moving downwardly through said stacking region while one of the support members 36 is poised ready for downward entrance into said stacking region, all to be explained more in detail below.
  • the sets of support members '36 and 38 are mounted movable about the stacking section 14 in the same continuous path downwardly through the stacking region 26 from theupper to the lower end thereof, then rearwardly from said stacking region lower end, then upwardly through a return region 40 displaced rearwardly from the stacking region and ultimately forwardly for return to the stacking region upper end.
  • the support members 36 forming the first set are sup ported for such movement on apair of inner conveyor chains 42 engaged over upper and lower drive shafts 44 and 46 throughappropriate sprockets 48,.
  • the support members 38 forming the second set are similarlysupp'orted over the upper and lower drive shafts 44 and 46 by a pair' of outer conveyor chains 50 engaged over appropriate sprockets S2.
  • the sprockets 48 for the inner conveyor chains 42 are secured to and movable with the upper'drive shaft 44, but journaled relative to the lower drive shaft 46, while the sprockets 52' for the outer conveyor chains 50 are joumaled relative to the upper drive shaft 44, but secured to and movable with the lower drive shaft 46.
  • the upper drive shaft 44 is driven by a-variable speed, electric drive motor 54 through a power transmission connection formed by a series of drive chains 56
  • the lower drive shaft 46 is driven by a variable speed, electric drive motor 58 througha power transmission connection formed by 'a series of drive chains 60.
  • actuation of either of the drive motors 54 or 58 will separately move the respective of the support members 36 or 38 about the continuous path described on the stacking section 14, the speed of said drive being dependent on the amount of electrical power directed to that particular drive motor so that the speed of drive can be varied by varying the amount of electrical powerto that particular drive motor.
  • each of the support members 36 and 38 is substantially identical being pivotally connected to the respective inner and outer conveyor chains 42 and 50 projecting therefrom generally in cantilever fashion. Furthermore, the support members 36 and 38 are maintained appropriately properly positioned particularly in their movement downwardly through the stacking region 26 by sets of guide rollers 62 movable in appropriate guide tracks 64 so that said support members during their downward movement through the stacking region project forwardly in generally horizontal directions for receiving stacks of publications thereon from the continuous stream of imbricated pu blications hereinbefore discussed. Still further, each of the sup port members 36 and 38 is formed by a series of transversely spaced tines 66 shown in FIG. 5, which,during downward movement of the support members through the stacking re gion 26 project forwardly through a: series of transversely spaced, stationary stack guide bars 68 secured to the stacking section 14.
  • the support members 36 and 38 move progressively downwardly through the stacking region 26, they are guided in their forward projection of the tines66by the combination of the drive'chains 60, guide rollers 62 and guide tracks 64, the stacks of publications being built'th'ereon being rearwardly supported by the stationary stack guide bars 68.
  • the support members then move said stack on downwardly to the stacking region lower end adjacent the generally horizontal surface of the conveyor belt 30 on the outfeed conveyor sec tion 16.
  • the movable guiding of the supportrnernbers 36 and 38 is such that as the support members reach the lower end of the stacking region 26, said support members are rapidly withdrawn in a generally horizontal position rearwardly through the stack guide bars 68 so as to move from beneath the particular publication stack supported thereon and deposit said stack smoothly on the conveyor belt 30 or other conveying means of the outfeed conveyor section 16 for removal from the stacking device as also hereinbefore described.
  • the stacking section 14 will include some form of'latchmeans including alatch plate 70 at the entrance to the upper end of the stacking region 26 for operably engaging each of 'thesupport members 36 and 38 so that particular support member is brought to and preferably stopped at the stacking region upper end.
  • the purpose of this latch means is to preload each of the-support members 36 and 38 for snap entrance into the stacking region 26 to quickly and smoothly intercept the continuous stream of imbricated publications from the infeed conveyor section 12 when the desired stack building has been completed on the next preceding support member then travelling downwardly through the stacking region. Whether a particular support member 36 or 38 remains poised at the upper end of the stacking region 26 preloaded for snap entrance into the stacking region or whether it remains poised merely for normal entrance is not, however, vital to the improvements of the present invention.
  • the sensing means generally indicated at 18 is mountedat the upper end of the stacking region 26 directly overlying the path of travel of the infeeding continuous stream of imbricated publications from the infeed conveyor section 12.
  • the sensing means 18 includes an angularly and downwardly rearwardly projecting sensing arm 72 vertically pivotally connected to a frame 74 by a pivot plate 76 on a pivot shaft 78.
  • the pivot plate 76 is resiliently urged through a spring 80 to, in turn, spring urge the sensing arm 72toward a maximum downward angular position, said maximum angular downward position being defined by engagement of a stop'portion 82 of the pivot plate 76 engaging a part of the frame 74.
  • the sensing means 18 further includes variable electric transducer means, in this case, in the form of a variable electric differential transformer 84 mounted on the frame 74 overlying an engagement recess 86 of the pivot plate 76 which extends rearwardly of the pivot shaft 78.
  • a transformer control bar 88 is movably received in the differential transformer 84 in the usual manner and projects downwardly through the frame 74 into engagement in the recess 86 of the pivot plate 76, such engagement being spaced rearwardly of the pivot shaft 78.
  • upward and downward pivotal movement of the sensing arm 72 will cause inward and outward movement of the control bar 88 within the differential transformer 84 to in turn, control the amount or characteristics of electrical power, in this case controlling voltage characteristics, transmitted through the differential transformer 84.
  • a safety switch in the form of a safety limit switch 90 is also mounted on the frame 74 rearward of the differential transformer 84 and overlying a rearward portion 92 of the pivot plate 76 spaced rearwardly from the pivot shaft 78.
  • An actuating arm 94 of the limit switch 90 is engaged with an actuating pin 96 projecting a limited distance downwardly through the frame 74 toward the rearward portion 92 of the pivot plate 76, the lower end of said actuating pin being engaged by the pivot plate rearward portion and movedupwardly to actuate the limit switch 90 when the sensing arm 72 is moved to an extreme vertically upward position.
  • the limit switch 90 is electrically connected in a usual and well-known manner for electrically bypassing or overriding the differential transformer 84 upon actuation of said limit switch to transmit a predetermined maximum electrical power around or bypassing said differential transformer.
  • the sensing arm 72 reaches said predetermined maximum vertical position and temporarily engaging the actuating pin 96, the safety limit switch 90 is temporarily actuated during the time the sensing arm remains in this maximum vertical position, thereby directing full power overriding the differential transformer 84 and eliminating the varying power control of said differential transformer.
  • Both of the differential transformer 84 and the safety limit switch 90 are electrically connected in a usual and well-known manner for in turn alternately controlling the direction of electrical power to the support member drive motors 54 and 58 during the time each of the support members 36 and 38 is moving downwardly from the upper end of the stacking region 26 and downwardly through said stacking region supporting a stack of publications being built thereon.
  • the drive motor 54 or 58 for that particular support member has the electrical power being directed thereto controlled by the differential transformer 84 and the safety limit switch 90 of the sensing means 18.
  • the sensing means 18 constantly senses the speed of buildup of said publication stack relative to the speed of downward movement of the particular support member by constantly sensing, through engagement by the sensing arm 72, the relative vertical position of the stack upper extremity. Furthermore, due to the electrical power control of the transducer means, in this case, the differential transformer 84, the direction of electrical power to the appropriate drive motor 54 or 58 is constantly controlled for controlling the speed of the particular support member to maintain the upper extremity of the stack being built at all times within a predetermined ve rtical distance range of the upper end of the stacking region and, more important, within said predetermined vertical distance range of the infeeding publications from the infeeding publication continuous stream.
  • the electrical power directed to the appropriate drive'motor 54 or 58 will be increased to increase the speed of said variable drive motor and move the particular support member at a greater speed downwardly. If the stack upper extremity moves vertically downwardly during said stack buildup, the speed of the appropriate drive motor 54 or 58 is decreased in the same manner to decrease the speed of the particular support member.
  • the stack upper extremity can reach a maximum vertical height as determined by the sensing arm 72 engaging the actuating pin 96 of the safety limit switch 90. If such occurs, the safety limit switch 90 is actuated, bypassing or overriding the control of the differential transformer 84 and directing full maximum power to the particular drive motor 54 or 58 causing said drive motor to move the particular support member 36 or 38at a maximum speed downwardly to quickly correct and properly position the stack upper extremity.
  • the temporary actuation of the safety limit switch 90 will, of course, cease by the downward movement of the sensing arm 72, but the effect of the safety limit switch is to obviously eliminate any danger to the components of the stacking device from the inordinate stack buildup.
  • differential transformer 84 for maintaining variable speed control of the particular support member 36 or 38 during said stack buildup
  • this differential transformer is only one form of transducer means which could be applied to the same function and it is not intended to limit the principles of the present invention to the exactconstruction shown.
  • the particular stacking device illustrated and described herein includes separately movable consecutive support members 36 and 38
  • the sensing means 18 of the present invention could be applied to consecutive, simultaneously movable support members driven by the same drive motor for controlling at least the major portion of the stack buildup on said support members andeven though the support members simultaneously move in a stop-start pattern.
  • the major portion of the advantages of the present invention would be obtained in this latter situation for obtaining a more orderly publication stack during the major portion of the building thereof.
  • a controlled variable speed stacking device for publication conveyors wherein the speed of stack buildup thereon is constantly sensed and the speed of the stacking device is automatically regulated to maintain the upper extremity of the stack being built within a predetermined vertical distance range of the infeeding publications forming said stack, thereby resulting in more orderly arranged stacks from said stacking device than has heretofore been possible with prior constructions.
  • the sensing means providing the foregoing advantages includes safety means incorporated therein for overriding the usual functioning of the sensing means and driving the stacking device at maximum speed in the event of some malfunction creating a danger of damage to said stacking device.
  • infeed conveyor means operably associated with said main frame for feeding a continuous streamof publications to said stacking region upper end and depositing said publications into generally vertical stacks on said support members means operably connected to said drive means and positioned 7 relative to said stacking region upper end for directly sensing an upper extremity'of each stack during at least a part of a buildup of said each stack on each of said'support members from said publication continuous stream andautomatically' during said sensing regulating the speed of movement of said each support member to maintain an upperextremity of said each stack within a predetermined vertical distance range from said stacking region upper end andsaid feeding of said publication continuous stream into saidstacking region.
  • a stacking device as definedin claim 1 in'which said drive means includes at least one variable speed electric drive motor operably connected to said support'members moving said support members in said continuous path at variable speeds dependent on electrical power to'said motor; and in which said stack sensing means includes electric transducer means electrically connected to said drive means motor and positioned relative to said stackingregion upper end for constantly sensing said upper extremity ofsaid each stack during said at least part of said each stack buildup and automatically regulating during said sensing the electrical power to said drive means motor to automatically regulate said speed of movement of said each support member.
  • a stacking device as defined in claim 1 in which said connected to said sensing arm for regulation by said sensing arm directly dependent on the relative position of said each stack upper extremity within said predetermined vertical distance range, said transducer means being electrically connected to said drive means varying the electrical power to said drive means according to said transducer means regulation to automatically regulate said speed of movement of said each support member during said each stackhuildup.
  • a stacking device as defined in claim 1 in. which said drive means includes variable speed electric drive means operably connected to said support members moving said support members in said continuous path and varying the speed of movement of said support members according to variations in electrical power thereto; 1 and in which said stack sensing means includes electric transducer means positioned relative to said stacking region upper endfmovable dependent on movement of said each stack upper extremity, said transducer means being electrically connected to said electric drive means regulating the electrical power.
  • safety switch means electrically connected to said 'electricdrive means and actionable upon said each stackupper extremity reaching a minimum predetermined vertical distance from said stacking region upper end to direct a predetemiined maximum electrical power to said electric drive means temporarily during said actuation and move said each support member at a predetermined maximum speed.
  • variable speed drive means operably connected to said support members for moving said support members in said continuous path, said drive means including variable speed electric drive means operably connected to said support members for moving said support members in said continuouspath and varying the speed of movement of said support members according to the amount of electrical power thereto; and stack sensing means operably connected to said drive means and positioned relative to said support member path of movement downwardly through said stacking region for sensing the speed of stack buildup on said downwardly moving support members and automatically controlling the speed ofsaid drive means drive to said support members to maintain during at least a part of said
  • variable speed electric drive means includes at least one variable speed electric drive motor operably-connected to said support members moving said support members at variable speeds in said continuous path according to the amount of electrical power directed to said drive motor; and in which said stack sensing means includes a sensing arm engaged with said stack upper extremity during said at least part ofsaid stack buildup and movable according to movements in the position of said stack upper extremity, said electric transducer means being operably connected to said sensing arm regulated according to- 7.
  • variable speed electric drive means includes at least one variable speed electric drive motor operably connected to said support members moving said support members at variable speeds in said continuous path according to the amount of electrical power directed to said drive motor; and in which said stack sensing means includes a sensing arm engaged with said stack upper extremity during said at least part of said stack buildup and movable according to movements in the position of said stack upper extremity, said electric transducer means being operably connected to said sensing arm regulated according to said sensing arm movements and electrically connected to said drive means drive motor for varying the amount of electrical power to said drive motor accordingto said transducer means regulation, safety switch means electrically connected to said drive means drive motor and positioned engageable by said spaced stack support members separately movable in the same general continuous path downwardly through a stacking region to a stacking region lower end and then upwardly through a return region displaced from said stacking region to a stacking region upper end, infeed conveyor means operably associated with said main frame for feeding a continuous stream of publications to said
  • a stacking device as defined in claim 8 in which said drive means includes variable speed electric drive means operably connected to said support members for providing said support member movement and moving said support members downwardly through said stacking region at variable speedsaccording to the amount of electrical power directed to said drive means; and in which said stack sensing means includes a sensing member positioned for engagement with said each stack upper extremity during said each stack buildup and movable according to said each stack upper extremity, drive speed control means operably connected to said sensing member for regulation according to said sensing member movements and electrically connected to said electric drive means controlling the amount of electrical power to said drive means according to said control means regulation.
  • said drive means includes at least one variable speed electric drive motor operably connected to said support members moving said support members at variable speeds according to the amount of electrical power directed to said drive motor;
  • a stacking device as defined in claim 8 in which said drive means includes variable speed electrically actuated drive means operably connected to said support members moving said support members in said continuous path at a speed according to the amount of electrical power directed to said drive means; and in which said stack sensing means includes movable electric transducer means for constantly sensing said each stack upper extremity during said each stack buildup and regulating the amount of electrical power to said electrical drive means according to the position of said each stack upper extremity relative to said vertical distance range, said trans ducer means increasing electrical power to said drive means during movements of said each stack upper extremity toward an upper limit of said vertical distance range and decreasing electrical power to said drive means during movements of said each stack upper extremity toward a lower limit of said vertical distance range.
  • infeed conveyor means operably associated with said main frame for feeding a continuous stream of publications to 'said stacking region upper end and depositing said publications into generally vertical stacks on said support members during said support member movement downwardly through said stacking region
  • guide means operably connecting said support members to" said main frame movable in said continuous path and positioned for receiving said publications into said stacks built thereon during said support member movement downwardly through said stacking region and depositing said stacks at said stacking region lower end
  • each of said first and second drive means includes variable speed electric drive means moving at speeds according to the amount of electrical power directed thereto, said first and second drive means being operably connected to the respective of said support members for drivingsaid support member and regulating electrical power to the particular of said drive means driving said particular of said support member for varying said electrical power to said particular drive means and thereby regulating thedownward speed of said particular support member.
  • each of said first and second drive means includes 'a variable speed electric drive motor operably connected tothe appropriate of said support members for alternately moving said support members downwardly through said stacking region, said drive motors moving said support members at speeds proportionate to the amount of electrical power directed to said drive motors; and in which said stack sensing means includes a pivotal sensing arm operably engaged with said stack upper extremity during said stack buildup and movable according to the vertical level of said stack upper extremity; differential electric transformer means having a movable control bar operably connected to said pivotal sensing arm and movable according to movements of said sensing arm, said control bar regulating the amount of electrical power through said differential transformer means by said'control bar movements, said differential transformer means being operably connected to the appropriate of said'drive means atleast during said drive means drive to said particular of said supportmembers for regulating the amount of electrical power to said appropriate drive means to control the speed of said particular of said support member thereby maintaining said stack upper extremity v within said vertical distance range.
  • a stacking device of the type in a publication conveyor system having a main frame mounting two sets of spaced stack support members movable in a common continuous path downwardly through a stacking region to a stacking region lower end and then upwardly through a return region displaced from said region to a stacking region upper end, said support members of one set being individually alternately positioned along said continuouspath with the sup port members of the other set, infeed conveyor means operably associated with said main framefor feeding a continuous stream of publications to said.
  • first drive means operably 'c'onnected to one of member sets for separately driving said other-support member set and the support members thereof, said first and second drive means alternately moving one of said support members of the appropriate of said sets downwardly through said stacking region while the other of said support-member sets remains free from movement with a support member ready for entrance into said stacking region upper end during at least part of said one support member movement within said stacking region; and stack sensing means operably connected to said drive means and positioned relative to said support member path of movement downwardly through said stacking region for sensing the speed of stack buildup during said stack buildup on the particular of said downward
  • each of said first and second drive means includes variable speed electric drive means for driving said support member set at varying speeds according to the amount of electrical power directed thereto; and in which said stack sensing means includes variable electric transducer means operably connected movable according to the vertical position of said stack upper extremity during said stack buildup and regulating electrical power to the appropriate of said drive means to control the 19.
  • each of said first and second drive means includes variable speed electric drive means for driving said support member set at varying speeds according to the amountof electrical power directed thereto; and in which saidstack sensing means includes variable electric transducer means operably connected tremity within said vertical distance range during said stack buildup, pivotal sensing arm means engaged with said stack upper extremity during said stack buildup and movable with 1 said stack upper extremity, said sensing arm means being operably connected to said transducer means for moving said transducer means, safety switch means'operably connected to said sensing arm means for actuation upon said stack upper extremity reaching a predetermined maximum vertical posi tion within said vertical distance range to electrically bypass said transducer means and direct a predetermined maximum electrical power to said appropriate of said drive means and drive said particular support member downwardly at a predetermined maximum speed.
  • a stacking device of the type used in a publication conveyor system having a main frame mounting a series of spaced stack support members movable in a continuous path downwardly through a stacking region to a stacking region lower end and then upwardly through a return region displaced from said stacking region to a stacking region upper end
  • infeed conveyor means operably associated with said main frame for feeding a continuous stream of publications to said stacking region upper end and depositing said publications into generally vertical stacks on said support members during said support member movement downwardly through said stacking region
  • guide means operably connecting said support members to said main frame movable in said continuous path and positioned for receiving said publications into said stacks built thereon during said support member movement downwardly through said stacking region and depositing said stacks at said stacking region lower end
  • variable speed drive means operably connected to said support members for moving said support members in said continuous path
  • stack sensing means operably connected to said drive means and positioned relative to said support member path of movement downwardly through said stacking region for sensing the speed of stack buildup on said downwardly moving support members and automatically controlling the speed of said drive means drive to said support members to maintain during at least a part of said stack buildup an upper extremity of said stack within a predetermined vertical distance range from said stacking region upper end and said feeding of said publication continuous stream into said stacking region
  • said stack sensing means being operable independent of speed of said feeding of said publications by said infeed conveyor means other than through said sensing of said stack buildup directly at each one of said downwardly moving support members during said stack buildup.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Forming Counted Batches (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
US736673A 1968-06-13 1968-06-13 Controlled variable speed stacking device for publication conveyor Expired - Lifetime US3548995A (en)

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US73667368A 1968-06-13 1968-06-13

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US3548995A true US3548995A (en) 1970-12-22

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US736673A Expired - Lifetime US3548995A (en) 1968-06-13 1968-06-13 Controlled variable speed stacking device for publication conveyor

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US (1) US3548995A (de)
JP (1) JPS4841647B1 (de)
CH (1) CH527757A (de)
GB (1) GB1203830A (de)
NL (1) NL6906640A (de)
SE (1) SE348406B (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643816A (en) * 1970-05-25 1972-02-22 Weber & Co Inc H G Stacker for bags and the like
US4019640A (en) * 1975-06-16 1977-04-26 Pitney-Bowes, Inc. Sheet material stacking and transfer apparatus
US4514128A (en) * 1982-07-12 1985-04-30 Mailroom Systems, Inc. Signature stacker including improved intercept means
EP0146869A3 (en) * 1983-12-14 1985-07-31 Karl Mohr Intermediate stacking device for cutting goods
US4577852A (en) * 1981-08-11 1986-03-25 Grapha-Holding Ag Apparatus for counting the sheets in a stream of partly overlapping sheets
US5024569A (en) * 1986-06-20 1991-06-18 Eds Technologies, Inc. Stacking method and apparatus
US5054993A (en) * 1986-06-20 1991-10-08 Idab Incorporated Rotary intercept stacking apparatus and method
US5338149A (en) * 1984-04-02 1994-08-16 Idab Incorporated Signature stacker
US6099452A (en) * 1995-03-01 2000-08-08 Moore Business Forms, Inc. Forms stacker
US6555776B2 (en) 2001-04-02 2003-04-29 Lockheed Martin Corporation Single feed one pass mixed mail sequencer
US20090289411A1 (en) * 2008-05-23 2009-11-26 Ferag Ag Apparatus for stacking sheet-like products, in particular printed products
US20130149096A1 (en) * 2011-12-07 2013-06-13 Ferag Ag Device and method for composing two-dimensional products, in particular printed products
CN106971816A (zh) * 2017-06-02 2017-07-21 王志强 一种变电站用变压器搬运装置
US20190062074A1 (en) * 2017-08-30 2019-02-28 R. A. Pearson Company Product-stacking and case-packing system and method

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CN110642065A (zh) * 2019-08-14 2020-01-03 霍山县雁江印务有限公司 一种高效堆码装置

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643816A (en) * 1970-05-25 1972-02-22 Weber & Co Inc H G Stacker for bags and the like
US4019640A (en) * 1975-06-16 1977-04-26 Pitney-Bowes, Inc. Sheet material stacking and transfer apparatus
US4577852A (en) * 1981-08-11 1986-03-25 Grapha-Holding Ag Apparatus for counting the sheets in a stream of partly overlapping sheets
US4514128A (en) * 1982-07-12 1985-04-30 Mailroom Systems, Inc. Signature stacker including improved intercept means
EP0146869A3 (en) * 1983-12-14 1985-07-31 Karl Mohr Intermediate stacking device for cutting goods
US5338149A (en) * 1984-04-02 1994-08-16 Idab Incorporated Signature stacker
US5024569A (en) * 1986-06-20 1991-06-18 Eds Technologies, Inc. Stacking method and apparatus
US5054993A (en) * 1986-06-20 1991-10-08 Idab Incorporated Rotary intercept stacking apparatus and method
US6099452A (en) * 1995-03-01 2000-08-08 Moore Business Forms, Inc. Forms stacker
US6555776B2 (en) 2001-04-02 2003-04-29 Lockheed Martin Corporation Single feed one pass mixed mail sequencer
US20090289411A1 (en) * 2008-05-23 2009-11-26 Ferag Ag Apparatus for stacking sheet-like products, in particular printed products
US20130149096A1 (en) * 2011-12-07 2013-06-13 Ferag Ag Device and method for composing two-dimensional products, in particular printed products
US9221628B2 (en) * 2011-12-07 2015-12-29 Ferg Ag Device and method for composing two-dimensional products, in particular printed products
CN106971816A (zh) * 2017-06-02 2017-07-21 王志强 一种变电站用变压器搬运装置
US20190062074A1 (en) * 2017-08-30 2019-02-28 R. A. Pearson Company Product-stacking and case-packing system and method
US10947062B2 (en) * 2017-08-30 2021-03-16 Pearson Packaging Systems Product-stacking and case-packing system and method

Also Published As

Publication number Publication date
JPS4841647B1 (de) 1973-12-07
NL6906640A (de) 1969-12-16
SE348406B (de) 1972-09-04
CH527757A (de) 1972-09-15
GB1203830A (en) 1970-09-03

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