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US20090309289A1 - Apparatus and method for removing flat printed products from a stack and transfering the printed products to a moving transporting device - Google Patents

Apparatus and method for removing flat printed products from a stack and transfering the printed products to a moving transporting device Download PDF

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Publication number
US20090309289A1
US20090309289A1 US12/483,743 US48374309A US2009309289A1 US 20090309289 A1 US20090309289 A1 US 20090309289A1 US 48374309 A US48374309 A US 48374309A US 2009309289 A1 US2009309289 A1 US 2009309289A1
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US
United States
Prior art keywords
gripper
printed products
printed product
transporting
transporting device
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.)
Abandoned
Application number
US12/483,743
Other languages
English (en)
Inventor
Pius Geisseler
Reto Furrer
Andreas Schuetz
Giorgio Zancanaro
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.)
Mueller Martini Holding AG
Original Assignee
Mueller Martini Holding 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 Mueller Martini Holding AG filed Critical Mueller Martini Holding AG
Assigned to MUELLER MARTINI HOLDING AG reassignment MUELLER MARTINI HOLDING AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Furrer, Reto, Geisseler, Pius, SCHUETZ, ANDREAS, ZANCANARO, GIORGIO
Publication of US20090309289A1 publication Critical patent/US20090309289A1/en
Abandoned 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
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/0808—Suction grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/02—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains
    • B65H5/021—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts
    • B65H5/023—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts between a pair of belts forming a transport nip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
    • B65H5/12—Revolving grippers, e.g. mounted on arms, frames or cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/30—Opening devices for folded sheets or signatures
    • B65H5/301—Opening devices for folded sheets or signatures comprising blade-like means inserted between the parts to be opened
    • B65H5/302—Opening devices for folded sheets or signatures comprising blade-like means inserted between the parts to be opened the blade-like means being stationary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/32—Saddle-like members over which partially-unfolded sheets or signatures are fed to signature-gathering, stitching, or like machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/34—Modifying, selecting, changing direction of displacement
    • B65H2301/341—Modifying, selecting, changing direction of displacement without change of plane of displacement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/43—Gathering; Associating; Assembling
    • B65H2301/435—Gathering; Associating; Assembling on collecting conveyor
    • B65H2301/4351—Gathering; Associating; Assembling on collecting conveyor receiving articles astride thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
    • B65H2301/4471—Grippers, e.g. moved in paths enclosing an area
    • B65H2301/44714—Grippers, e.g. moved in paths enclosing an area carried by rotating members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
    • B65H2301/4474—Pair of cooperating moving elements as rollers, belts forming nip into which material is transported
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
    • B65H2301/4479—Saddle conveyor with saddle member extending in transport direction

Definitions

  • the invention relates to an apparatus for removing flat printed products from a stack and transferring the printed products to a moving transporting device.
  • Such an apparatus including a separating device for separating out and removing the printed products from the stack, as well as a rotating conveyor for taking over the separated printed products and supplying them to the transporting device, wherein the conveyor has an axis of rotation and at least one gripper for taking over the printed products in a gripping plane.
  • the transporting device has a transporting direction and a vertical center plane that extends in the transporting direction, and wherein the rotational axis is oriented at least approximately at a right angle to the center plane.
  • the invention furthermore relates to a corresponding method for the removal of flat printed products from a stack and for transferring the printed products to a moving transporting device.
  • a rotary feeder is disclosed in Swiss patent document CH 617905 A5, which is designed to pull flat printed products with off-center folds individually from a stack inside a hopper, to open up these printed products, and to deposit them on the gathering chain of a gathering and wire-stitching machine.
  • the printed products which are separated with the aid of a suction device, are gripped successively by a continuously rotating draw-off drum provided with a gripper and are accelerated to the drum speed.
  • the movement direction for the printed products is reversed at an end stop for the sheets.
  • the printed products are subsequently opened up with the aid of two counter-rotating drums that are also provided with grippers.
  • the first opening drum in this case grips the first leg of the respective printed product, provided with an overlay fold, while the second opening drum grips its shorter leg.
  • the sheets are subsequently deposited by dropping them at a 90° angle relative to the transporting direction of the gathering chain.
  • the printed products are in free fall for a short distance, until the respective inside of a printed product impacts with the saddle of the gathering chain or comes to rest on the back of previously gathered printed products.
  • the printed products are accelerated to the transporting speed of the gathering chain when coming in contact with the pusher on the gathering chain.
  • the printed products are strongly accelerated while being gripped by the draw-off drum.
  • the subsequent change in direction at the end stop causes a deceleration and then a renewed acceleration of the printed products, which requires additional processing time and can lead to undesirable markings on the printed products or deformation of the printed products.
  • the pushers on the gathering chain impact at a high speed with the deposited printed products.
  • the printed products can thus be pushed together with enough force, so that their reliable acceleration through the pushers is no longer ensured and the end position of the respective printed product relative to the previously gathered printed products and/or the pusher can greatly vary.
  • the dropping of the sheets during the free fall is uncontrolled and is furthermore influenced by the surface-related mass of the printed products, the side dimensions, the structure, the production speed and the format for the printed products.
  • a relatively large chain pitch meaning a long distance between the pushers, is therefore required to ensure nonetheless that the printed products are dropped between two successively following pushers onto the gathering chain.
  • the chain speed must therefore be increased while the cycle time is maintained, which further complicates the processing and can lead to problems with the quality.
  • European patent document EP 1024099 A1 discloses an apparatus for opening and depositing a folded, flat printed product on a moving transporting device of a high-performance machine, operating at a processing speed of more than 16000 printed products per hour.
  • the printed products can be pre-accelerated in this machine through additionally installed acceleration drums or rolls, up to the speed of the transporting device, thus making it possible to drop the product, at least in part, in the movement direction of the transporting device.
  • Swiss patent document CH 695052 A5 relates to an apparatus for removing flat printed products from a plurality of stacks and for gathering the printed products along a gathering section, consisting of a transporting device and a plurality of conveyors, wherein the conveyors function to supply the printed products to the transporting device.
  • This type of machine which differs from the aforementioned prior art, is a so-called gathering machine and can be connected to a downstream-arranged adhesive binding machine. An opening of the printed products is neither intended nor necessary in this case.
  • the rotational axes of the conveyors for this solution are respectively arranged at a right angle to a vertical center plane for the transporting device that extends in transporting direction of the transporting device, so that the printed products are respectively dropped in the transporting direction onto the transporting device, wherein the printed products are initially stacked one above the other.
  • the respectively lowest printed product is partially separated from the stack with the aid of a separating device in the form of suction cups or the like, is then gripped by grippers arranged on the respective conveyor drum, is pulled completely from the stack and is conveyed to the transporting device.
  • the conveying device is thus formed by the surface of the respective drum and the grippers that operate jointly with this drum.
  • a gripper plane that extends parallel to the rotational axis for the conveyor and thus at a right angle to the center plane for the transporting device is embodied between the drum surface and the grippers.
  • This gripper plane corresponds to the contact surface of the drum and the gripper, without a printed product disposed in-between, and corresponds to the location where the grippers take over the printed products from the separating device.
  • the goal is to improve the process safety, the quality of the final products and the production capacity, to avoid problems with the separation, and to allow a simple yet sufficient buffer storage of printed products.
  • an apparatus for withdrawing flat printed products from a stack and transporting the printed products comprising: a transporting device having a transporting direction and a vertical center plane that extends in the transporting direction; a separating device to separate out the printed products from the stack; and a rotating conveyor having a rotational axis and a conveying direction, the rotating conveyor including at least one gripper with a gripper plane to grip a separated printed product in the gripper plane and supply the separated printed product to the transporting device, wherein the rotational axis is oriented approximately at a right angle to the center plane of the transporting device, and the gripper plane of the at least one gripper is essentially arranged in the center plane of the transporting device.
  • the printed products are essentially taken over by the rotating conveyor, conveyed and transferred to the transporting device in the center plane for the transporting device.
  • the required number of transfer locations for the printed products and the resulting process risks can be noticeably reduced.
  • the change of direction during the conveying operation, as well as the connected deceleration and renewed acceleration of the printed products are consequently also omitted.
  • a relatively low drop height can be realized as a result of a tangential approach of the conveyor to the transporting device, thus advantageously resulting in a compact apparatus including a continuously operating conveyor.
  • Access to the individual structural components is furthermore improved and the process sequence can be tracked and monitored more easily by the machine operator.
  • the stack alignment is essentially horizontal from the start, or at least need not be vertical.
  • a hopper suitable for the buffer storage of the printed products can thus be used advantageously, wherein the hopper can also accommodate bundles composed of printed products.
  • the speed of the printed products relative to the speed of the transporting device can be reduced optionally at the instant of dropping the sheet or signature. Since a deformation of the printed products is not required for the product takeover, as is required for the known withdrawing or opening drums, the printed products remain in a substantially extended position while passing through the device according to the embodiment, so that stiff printed products can be processed as well.
  • At least one supply device for supplying the printed products is arranged in the region upstream of a takeover location, arranged between the separating device and the conveyor.
  • the supply device supplies the printed products to the gripper with at least one edge oriented substantially in the gripper plane.
  • the at least one supply device is embodied as a hopper that accommodates the stack, is provided with an end stop as well as the separating device and is arranged adjacent to the conveyor, or it is embodied as a feeding device for the printed products that are arranged between the separating device and the conveyor.
  • the printed products are oriented with at least one edge essentially in the gripper plane for the at least one gripper. Following the separation, they are either taken over directly at the takeover location, or they are first supplied to the takeover location.
  • the option of either taking over the printed products directly or alternatively using the feeding device in-between makes it possible to advantageously adapt the apparatus and method to the respective process requirements.
  • a sheet opener is installed between the separating device and the transporting device.
  • the printed products can thus be opened during the feeding or conveying operation and can also be opened and transferred in the opened state to the transporting device, either in the same plane used for the takeover, conveying and transfer, or in an upstream positioned plane that is arranged at an angle thereto.
  • An embodiment employing the invention can therefore advantageously be used even for devices having a saddle-shaped gathering chain, such as a gathering and stitching machines, thread-stitching devices, or the like.
  • the conveyor is equipped with a driven rotor having at least one rotor arm.
  • a gripper with a pair of gripper elements for gripping the printed products is arranged on each rotor arm, wherein at least one gripper element of each pair is embodied to be movable.
  • the at least one gripper is attached to a support lever with a first and a second lever end, wherein the first lever end is connected via a joint to a rotor arm and wherein a cam roller for a control cam that is arranged on an apparatus frame is positioned on the second lever end.
  • a defined control of the gripper position is thus possible during its rotation around the axis of rotation for the rotor, which allows a parallel orientation to the printed product to be taken over and/or to the transporting direction of the transporting device during the takeover as well as the transfer of the printed products.
  • the conveyor is provided with a separate drive motor, in particular a servo-motor, such that it can advantageously be operated independent of the downstream-arranged transporting device and its operating speed can be varied, depending on the upstream and/or the downstream arranged devices.
  • the at least one gripper is connected to a control element arranged on the support lever for the gripper elements.
  • the gripper can be activated directly and individual printed products can be gripped purposely.
  • the direct activation of the gripper furthermore allows an individual adaptation of the closing and opening moments.
  • a measuring device for measuring the thickness of the printed products is advantageously arranged on the at least one gripper.
  • This measuring device can be used to determine whether the gripper has gripped a single printed product, a plurality of printed products, or no printed product at all. In the event of a processing error, the partial processes that follow can be stopped and the amount of waste material reduced. If a plurality of printed products have been gripped impermissibly, these can be removed during a later partial process.
  • the sheet opener is arranged in the region of the conveyor, immediately following the separating device in the conveying direction, and is provided with an opening device as well as a guide element arranged downstream in the conveying direction of the printed products.
  • the opening device comprises a pivoting blade and the guide element is embodied in the shape of a sickle, thus making it possible to open the printed products during the conveying, without any additional acceleration or delay.
  • the fact that the blade takes up the overlay fold along the front permits a secure opening of even small overlay fold lengths, thereby resulting in improved process safety as compared to the prior art.
  • At least one printing head and/or at least one glue-application head is arranged in the region of the guide element and/or the feeding device.
  • the printed products can thus be provided with additional information during the conveying and/or the feeding operation and/or can be attached with glue to printed products already positioned on the transporting device.
  • the guide element further comprises an intake part and a discharge part, which are embodied adjustable relative to each other, thereby making it easier to adjust the format adjustment depending on the printed products to be processed.
  • the printed products are taken over by a rotating gripper and are released from this gripper for the transfer to the transporting device, wherein the respective gripper is oriented parallel to the stack and/or the transporting device even before the takeover as well as the transfer of a printed product, and wherein this orientation is maintained until after the takeover and/or the transfer of the printed product.
  • the respective printed product can thus be removed by the gripper essentially parallel to the stack and can also be transferred essentially parallel to the transporting device, resulting in a relatively quiet material flow where the printed products are transferred to the conveyor with defined control.
  • the transporting device can be realized with smaller chain pitches, which results in a reduction of the transporting speed while simultaneously maintaining the same production capacity, thereby contributing to improving the process safety.
  • FIG. 1 is a perspective view of the apparatus according to the invention.
  • FIG. 2 is a front view of the apparatus according to the invention, provided with an alternative drive, which is restricted to the essential components and is shown enlarged as compared to FIG. 1 ;
  • FIG. 3 is a side view of the apparatus, as shown in FIG. 2 , in a direction toward the guide element;
  • FIG. 4 is a perspective view of the apparatus in a different embodiment of the invention with a separating device installed upstream of the conveyor.
  • FIG. 1 shows a transporting device 1 , embodied as a gathering chain for a known gathering and stitching machine, which is not shown in further detail herein.
  • Flat printed products 4 with an overlay fold 3 ( FIG. 2 ), which are embodied as signatures, are deposited with the aid of a feeder 2 between two adjacent pushers 5 on this transporting device and are then transported further in transporting direction 6 .
  • the transporting device 1 is provided for this with two supports 7 , which are joined to abut in a ridge 8 and form a saddle.
  • this embodiment is not restricted to a transporting device 1 embodied as gathering chain for a gathering and stitching machine, meaning the feeder 2 can also be combined with the transporting device for a thread-stitching machine, the gathering channel of a perfect binder, the gathering channel of an inserting machine, or with a suitable conveying belt, wherein sheets without a fold can also be processed.
  • the feeder 2 that is supported by a frame 9 comprises a hopper 10 , a separating device 11 , a sheet opener 12 , and a rotating conveyor 13 for the printed products 4 .
  • the hopper 10 and the separating device 11 are arranged above the conveyor 13 , meaning directly adjacent thereto in the frame 9 .
  • the sheet opener 12 can be omitted if the printed products 4 do not have to be opened for the processing steps following the transporting device 1 .
  • the hopper 10 comprises two sheet metal side panels 14 , 15 , a bottom panel 16 , as well as an end stop 17 for forming a stack 19 with the printed products 4 , which are respectively taken over with the edge 18 that is embodied as a back pointing in downward direction.
  • a bottom and/or a side clearance space 20 , 21 is embodied between the end stop 17 and the bottom panel 16 on the bottom, as well as between the end stop 17 and the side panel 15 , wherein these clearance spaces are designed to aid the withdrawal from the stack 19 of the separated printed products 4 .
  • Sensors 22 and 23 are attached to the end stop 17 and the side panel 15 , wherein one sensor is directed toward the lower clearance space 20 while the other sensor is directed toward the side clearance space 21 .
  • the hopper 10 is arranged at an angle in the frame 9 , meaning it is arranged at an angle ⁇ that opens up in the direction of the side clearance space 21 , relative to the ridge 8 of the transporting device 1 , resulting in a defined and also slanted positioning of the printed products 4 on the side panel 14 , regardless of the format.
  • the hopper 10 can furthermore be arranged horizontal inside the frame 9 , meaning parallel to the transporting device 1 , wherein the positioning of the printed products 4 in that case is realized with a corresponding adjustment of the side panels 14 , 15 of the hopper 10 .
  • the separating device 11 is arranged in the lower clearance space 20 of the hopper 10 and is provided with a number of suction devices 24 , as well as separating needles that are not shown herein.
  • the sheet opener 12 arranged in conveying direction 25 of the printed products 4 between the hopper 10 and the transporting device 1 and immediately following the separating device 11 , is connected via a first fastening element 26 to the hopper 10 and via a second fastening element 27 , shown in FIG. 2 , to the frame 9 for the feeder 2 .
  • additional fastening elements can also be used.
  • a first adjustment device 28 is installed between the first fastening element 26 and the side panel 15 of the hopper 10 while a second adjustment device, not shown herein, is installed inside the hopper.
  • the sheet opener 12 consists of an opening device 29 and a following, two-part guide element 30 in the shape of a sickle.
  • the opening device 29 is provided with a holder 31 attached to the guide element 30 , which is provided with a slotted bushing 33 for accommodating a blade 32 .
  • the bushing 33 is positioned inside the holder 31 , such that it can pivot around a rotational axis 34 , and is connected on the other end with a pivoting drive 35 that can be operated manually, pneumatically or with the aid of a motor.
  • the guide element 30 comprises an intake part 36 as well as a discharge part 37 , which are respectively attached with screws 38 to a joint holding element, not shown herein, such that they can be adjusted relative to each other.
  • Two guide rails 39 for the printed products 4 are respectively attached on both sides of the intake part 36 and the discharge part 37 of the guide element 30 .
  • a separate sensor 40 is furthermore installed in front as well as behind the intake part 36 of the guide element 30 , wherein FIG. 2 only shows the sensor 40 in front. Both sensors 40 are attached to the holder 31 for the opening device 29 .
  • a bracket 41 may be arranged on the frame 9 , which comprises a first support arm 42 for a first printing head 43 and, on the frame side, a second support arm 44 for a second printing head 43 .
  • the printing heads 43 are respectively oriented toward the guide element 30 of the sheet opener 12 and/or the thereon guided legs 45 , 46 of the printed products 4 and are connected to a feeding device, not shown herein, for supplying the required operating device such as the printing ink.
  • the conveyor 13 which is shown in further detail in FIG. 2 , comprises a driven, star-shaped rotor 47 with three rotor arms 48 , which support respectively one gripper 49 for the printed products 4 , wherein the rotor 47 can also have more or fewer than three rotor arms 48 .
  • the rotor 47 can rotate around an axis of rotation 50 and is positioned with the aid of a drive shaft 51 in a bearing block 52 on the frame 9 ( FIG. 1 ).
  • the axis of rotation 50 for the conveyor 13 is arranged horizontal and at a right angle to the transporting direction 6 of the transporting device 1 , as well as simultaneously also parallel to the orientation of the stack 19 and thus at a right angle to the end stop 17 on the hopper 10 .
  • the axis of rotation 50 for the conveyor 13 can also deviate somewhat from the right-angle position relative to the transporting direction 6 of the transporting device 1 , which advantageously provides more freedom for embodying the conveyor 13 .
  • a drive motor 53 is arranged on the frame 9 , offset to the side of the drive shaft 51 , which can be embodied as stepping motor, servo motor, or torque motor and permits a uniform as well as a non-uniform rotational movement of the conveyor 13 ( FIG. 2 ).
  • Its rotor 47 can be accelerated or delayed by using a non-uniform rotational movement and can thus be optimized, in particular as it concerns the speed during the takeover and/or the transfer of the printed products 4 .
  • the angular speed of the rotor 47 and thus also the circumferential speed of the printed products 4 can be varied, depending on the leading feeder 2 and/or the lagging transporting device 1 .
  • the drive motor 53 is provided with a first toothed belt wheel 54 while the drive shaft 51 is provided with a second toothed belt wheel that is not shown herein.
  • a toothed belt 55 moves around both toothed belt wheels and drives the rotor 47 .
  • FIG. 1 shows that alternatively a drive motor 53 ′ can also be arranged directly on the drive shaft 51 .
  • the drive motors 53 , 53 ′ are provided with a measuring device, not shown herein, for detecting the rotational position and/or the motor speed, which make it possible to provide the drive control unit with feedback regarding the actual drive position.
  • Measuring devices of this type can be absolute encoders, incremental encoders or resolvers, as previously disclosed in European patent document EP 917965 A1. These encoders ensure an angle-synchronous movement of the conveyor 13 , relative to the transporting device 1 .
  • the grippers 49 are respectively provided with a pair of gripper elements 56 (shown in FIG. 1 ), embodied as gripper jaws, wherein at least one gripper element 56 is designed to be movable.
  • the gripper elements 56 of each pair are respectively provided with a contact surface 57 (shown in FIG. 3 ), wherein these contact surfaces fit flush against each other if no printed product 4 is disposed between them.
  • the contact surfaces form a gripper plane 58 in which a gripper 49 takes over the respective printed product 4 from the separating device 11 .
  • the grippers 49 are positioned such that the gripper plane 58 is arranged in the center plane 59 for the transporting device 1 .
  • the printed products 4 located in the conveyor 13 are oriented in a vertical center plane 59 (shown in FIG. 2 ) of the transporting device 1 , which is embodied at a right angle to the axis of rotation 50 and extends in the transporting direction 6 .
  • the complete conveyor 13 is essentially also arranged in this center plane 59 , meaning the takeover, conveying and transfer of the printed products 4 also takes place essentially in this center plane 59 .
  • the grippers 49 are respectively positioned on a support lever 60 , which is attached with a first lever end 61 via a joint 62 to the respective rotor arm 48 and which supports on a second lever end 63 a cam roller 65 that is forcibly guided inside a control curve 64 ( FIG. 2 ).
  • a pneumatically operated control element 66 for the gripper elements 56 and a measuring device 67 for detecting the thickness of the respectively withdrawn printed product 4 are arranged on the support lever 60 , between the lever and the associated gripper 49 .
  • control element 66 For each gripper element 56 , the control element 66 is provided with a pneumatic cylinder that is not shown herein. Of course, the control element 66 can also be operated differently, for example hydraulically or electrically.
  • the gripper movement is triggered by the control element 66 , based on variables specified by the machine control unit. For example, a faulty withdrawal or a double withdrawal by the upstream-arranged feeders 2 can result in suppressing the gripper movement.
  • the printed product 4 that rests with its back, meaning the downward pointing edge 18 , against the end stop 17 and the side panel 14 is initially lifted with the aid of the separating device 11 , meaning the suction device 24 and the non-depicted separating needles, off the following printed product 4 in the stack 19 in the region of the lower clearance space 20 and is then moved to the gripper plane 58 of a gripper 49 , which moves in the movement direction of the printed product 4 . Following this, the printed product 4 is gripped along this edge 18 by the gripper elements 56 . Of course, a different edge such as a side edge can also be gripped, depending on how the printed product 4 is supplied.
  • a separated out printed product 4 is then guided with the aid of the rotor 47 that rotates in the conveying direction 25 in a clockwise direction over the opening blade 32 , which lifts the leg 45 with the overlay fold 3 slightly off the other leg 46 of the printed product 4 .
  • the blade 32 is pivoted with the aid of the pivoting drive 35 around the axis of rotation 34 , so that it comes in contact with the corresponding leg 45 , 46 of the printed product 4 .
  • the position of the blade 32 is either adjusted manually or selected with the aid of a motor, wherein the required position can also be adjusted automatically.
  • the sensors 40 arranged on the opening device 29 monitor the position of the legs, to ensure that a leg 45 is present in front and a leg 46 is present behind the guide element 30 . If that is not the case, it is assumed that the printed product 4 is not opened and has an overlay fold 3 embodied on the other leg.
  • the position of the blade 32 is then automatically adapted via the pivoting drive 35 , activated by the machine control, to ensure a correct opening of the following printed product 4 .
  • An automatic format adaptation is furthermore possible for each work order by initially determining the back length of a printed product 4 with the sensor 22 , arranged above the end stop 17 , and then the leg length of the printed product, meaning its format, via the sensor 23 that is arranged on the side panel 15 for the hopper 10 . Accordingly, the distance between the sheet opener 12 and the printed products 4 is adapted with the first adjustment device 28 , wherein simultaneously the intake portion 36 of the guide element 30 is displaced telescopically relative to the discharge portion 37 . A corresponding displacement of the side panels 14 , 15 for the hopper 10 occurs with the aid of the second adjustment device, which is not shown herein.
  • the rotor 47 which continues to rotate, conveys the opened printed product 4 that is pulled from the stack 19 in a vertical center plane 59 , which is positioned in the drawing plane of FIG. 2 at a right angle to the axis of rotation 50 and extends in the transporting direction 6 of the transporting device 1 .
  • the opened printed product is thus positioned over the guide element 30 to have one leg 45 extend in front and the other leg 46 extend behind the guide element 30 .
  • the guide rails 39 in this case support the conveying of the printed product 4 along the guide element 30 and prevent printed product legs 45 , 46 from folding down on the sides. While the legs 45 , 46 of a printed product 4 are moved past the print heads 43 , they can be imprinted if applicable with information, e.g.
  • the grippers 49 are consequently oriented parallel to the hopper 10 and/or the ridge 8 of the transporting device 1 .
  • the gripper elements 56 are closed with the aid of the control element 66 and are opened again at the transfer location 69 .
  • the takeover by the grippers 49 of the conveyor 13 , the transport as well as the transfer of the printed products 4 are realized in a continuous movement, meaning without change in direction.
  • the printed products 4 are deposited at approximately at the same speed as the speed of the transporting device 1 .
  • the printed products 4 are therefore not only conveyed in the center plane 59 of the transporting device 1 , but are also opened and deposited onto the transporting device 1 in this plane.
  • the center plane 59 can therefore also be called the working plane.
  • gripper elements that are not shown herein above a specific section of the guide element 30 .
  • Such gripper elements may move along with the respective gripper 49 and are operated with the aid of a crank drive that is also not shown herein.
  • Additional and identically embodied feeders 2 can be installed before and/or after the feeder 2 , so that a plurality of printed products 4 can be collected and stacked one above the other on the transporting device 1 and can be made available for a subsequent further processing, for example for the stitching in a wire-stitching or thread-stitching device not shown herein.
  • a subsequent further processing for example for the stitching in a wire-stitching or thread-stitching device not shown herein.
  • the gripper 49 continues to hold the respective printed product 4 , which is moved past the hopper 10 during a further rotation of the conveyor 13 and is deposited only then on the transporting device 1 and/or on a printed product previously deposited on the transporting device and recognized as perfect. In this way, it is possible to react shortly after detecting the imperfect product and to prevent further paper waste.
  • FIG. 4 shows a second embodiment of a feeder 2 ′ with a separating device 11 ′ that is spatially separate and installed upstream of the conveyor 13 .
  • a hopper 10 ′ that holds the separating device 11 ′ is arranged horizontally on a frame 9 ′, which is separate from the frame 9 for the conveyor 13 .
  • a feeding device 71 is installed between the hopper 10 ′ and the conveyor 13 , which consists of two horizontally arranged conveying belts 70 and is connected with fastening elements that are not shown herein to the frames 9 , 9 ′.
  • the feeding device 71 can also be provided with different transporting devices such as grippers.
  • the frame 9 ′ and thus also the hopper 10 ′ and the separating device 11 ′ are arranged offset to the side and at an angle to the frame 9 for the conveyor 13 , such that sufficient space remains next to the feeder 2 ′ for the transporting device 1 as well as adjacent feeders 2 ′.
  • a second vertical plane 59 ′ is thus created, which is oriented at an angle to the center plane 59 of the transporting device. Since the separating and feeding of the printed products 4 to the center plane 59 takes place in the second plane 59 ′, the second plane 59 ′ can be referred to as the feeding plane.
  • the transport belts 70 of the feeding device 71 respectively have an angled section 72 .
  • Additional printing heads or glue application heads 43 , 43 ′ can be arranged in the region for the feed device 71 , either in place of or in addition to the printing heads/glue application heads 43 , 43 ′ installed in the region of the guide element 30 .
  • the additional components of the feeder 2 ′ are embodied and arranged identically to the first embodiment.
  • the mode of operation of the feeder 2 ′ essentially corresponds to the mode of operation of the feeder 2 of the first embodiment.
  • additional processing options can advantageously be realized during an intermediate feeding step, such as applying inscriptions and adhesive, folding or positioning the printed products 4 that are supplied to the conveyor 13 , but also the inserting or gluing on of additional printed products or other flat items.
  • the opening of the printed products could also occur upstream of the feeding device.
  • a corresponding sheet opener is arranged upstream of the takeover location 68 .
  • the opening of the products is furthermore easier because the printed products are transported linear in this region, as compared to a rotational transport.
  • the hopper 10 that is positioned adjacent to the conveyor 13 is designed to hold the stack 19 and is provided with the end stop 17 and the separating device 11 .
  • the feeding device 71 that is arranged between the separating device 11 and the conveyor 13 is provided as the device 73 , 73 ′ for supplying the printed products 4 , wherein the printed products 4 are essentially supplied with the edge 18 extending in the gripper plane 58 for the grippers 49 .
  • a printed product 4 may be immediately gripped by the rotating conveyor 13 at a takeover location 68 proximate to the stack and, in the second embodiment, the printed product 4 may be supplied to a distal takeover location (see FIG. 4 ) relative to the stack 19 ′ at which the printed product 4 is gripped by the gripper 49 of the rotating conveyor 13 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Discharge By Other Means (AREA)
  • Specific Conveyance Elements (AREA)
US12/483,743 2008-06-12 2009-06-12 Apparatus and method for removing flat printed products from a stack and transfering the printed products to a moving transporting device Abandoned US20090309289A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08405156.4 2008-06-12
EP08405156A EP2133295B1 (fr) 2008-06-12 2008-06-12 Dispositif et procédé destinés à extraire des produits d'impression plats d'une pile et à les transmettre à un dispositif de transport déroulant

Publications (1)

Publication Number Publication Date
US20090309289A1 true US20090309289A1 (en) 2009-12-17

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US12/483,743 Abandoned US20090309289A1 (en) 2008-06-12 2009-06-12 Apparatus and method for removing flat printed products from a stack and transfering the printed products to a moving transporting device

Country Status (5)

Country Link
US (1) US20090309289A1 (fr)
EP (1) EP2133295B1 (fr)
JP (1) JP2009298595A (fr)
CN (1) CN101602443A (fr)
AT (1) ATE527196T1 (fr)

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DE102011082265A1 (de) 2011-09-07 2013-03-07 Müller Martini Holding AG Vorrichtung und Verfahren zur Beförderung von Druckbogen
DE102012104213B4 (de) 2012-05-15 2020-01-09 Taktomat Kurvengesteuerte Antriebssysteme Gmbh Transportsystem für Behandlungsmaschinen sowie Behandlungsmaschine
CN103738070B (zh) * 2013-12-13 2015-09-02 安徽华印机电股份有限公司 顺序下帖装置
CN107879180B (zh) * 2017-10-30 2023-12-12 长江大学 一种自动折纸机

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US20080007075A1 (en) * 2006-07-10 2008-01-10 Goss International Americas, Inc. Compensating gripper with independent gripper adjustment

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Publication number Priority date Publication date Assignee Title
EP2390209A2 (fr) 2010-05-28 2011-11-30 Goss International Americas, Inc. Dispositif de transport de signature doté d'un bras rotatif et procédé
US8602406B2 (en) 2010-05-28 2013-12-10 Goss International Americas, Inc. Signature transport device with rotary arm and method

Also Published As

Publication number Publication date
ATE527196T1 (de) 2011-10-15
CN101602443A (zh) 2009-12-16
EP2133295B1 (fr) 2011-10-05
EP2133295A1 (fr) 2009-12-16
JP2009298595A (ja) 2009-12-24

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