EP0567807B1 - Active work station for a stream of printed products in shingled formation - Google Patents

Active work station for a stream of printed products in shingled formation Download PDF

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Publication number
EP0567807B1
EP0567807B1 EP93105576A EP93105576A EP0567807B1 EP 0567807 B1 EP0567807 B1 EP 0567807B1 EP 93105576 A EP93105576 A EP 93105576A EP 93105576 A EP93105576 A EP 93105576A EP 0567807 B1 EP0567807 B1 EP 0567807B1
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EP
European Patent Office
Prior art keywords
work station
deflection
station according
conveyor belt
stream
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93105576A
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German (de)
French (fr)
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EP0567807A1 (en
Inventor
Walter Reist
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Ferag AG
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Ferag AG
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/66Advancing articles in overlapping streams
    • B65H29/6645Advancing articles in overlapping streams buffering an overlapping stream of articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/66Advancing articles in overlapping streams
    • B65H29/6654Advancing articles in overlapping streams changing the overlapping figure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/66Advancing articles in overlapping streams
    • B65H29/6654Advancing articles in overlapping streams changing the overlapping figure
    • B65H29/6663Advancing articles in overlapping streams changing the overlapping figure reversing the overlapping figure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20Location in space
    • B65H2511/22Distance

Definitions

  • the invention relates to an interface for scale formations of printed products according to the preamble of claim 1 and a method for operating such an interface.
  • the interface according to the invention is active, it processes a shingled stream of printed products and can be used between a device that designs a shingled stream and a device that processes a shingled stream further.
  • Scale flows of printed products are laid out, for example, by rotary presses, from unwinding stations from winding or from investors from stacks.
  • a shingled stream is either further processed as such in a process station or it is first converted into another transport formation for further processing, for example into a transport stream in which each printed product is transported suspended by means of a clamp.
  • a designed stream of shingles has certain properties depending on the printed product and the device from which it is laid out.
  • Each device that processes a shingled stream or converts it into another transport formation places certain demands on the properties of the shingled stream supplied.
  • scale-shedding and shingling-absorbing devices can be combined as freely as possible, they must be configured or configurable in such a way that the laid-out stream corresponds to the requirements of further processing in any case, or further devices for adapting the shingled stream between the shingled stream-laying and shingled stream must be used - Receiving device can be switched on.
  • the required configuration or configurability of the shingled stream designing and shingled stream processing devices either increases the number of necessary device variants or makes the devices more complex and therefore more expensive. Interposition of additional devices takes up a lot of space, especially if more than one additional device is required.
  • EP-A-0 281 887 describes a conveying device for paper products accumulating in a scale formation, which can be produced particularly economically, can be used depending on the space conditions or the need to bridge changes in direction and, if appropriate, also for turning, and is easy to set up .
  • the transport device is assembled from individual standardized, self-contained, prefabricated components. By combining such structural units, conveying devices, the individual structural units of which have been prefabricated, can be put together in accordance with the transport requirements for the product flow and the spatial conditions.
  • One of these various standardized units is a deflection element for deflecting the product flow by 90 °.
  • the device disclosed in FR-A-2 343 675 serves to even out the distance between successive, flat, rigid objects which occur at irregular mutual distances in a scale formation.
  • the incoming objects are pushed onto an intermediate stack from above.
  • the objects are then removed from this intermediate stack again from below in a regular sequence and taken away in a uniform scale formation.
  • the object of the present invention to provide an interface of the type mentioned at the outset, which is to be designed and active in such a way that the scale flow that flows out of the interface differs from the scale flow that flows into the interface with regard to properties and / or differentiates in terms of quality, which means that the Scale flow is adapted through the interface for the scale flow-absorbing device.
  • the interface should be space-saving, simple and can be used for as many applications as possible, ie it should be able to change as many properties of a shingled stream as possible within the broadest possible range.
  • the interface according to the invention is preferably operated by the method according to claims 20-22.
  • Figures 1a to 1c show two exemplary scale streams of printed products as a top view ( Figure 1a) and a side view ( Figures 1b and 1c).
  • One of the printed products (P) is highlighted as an example by hatching.
  • the shingled stream S is conveyed in the conveying direction F on a moving conveying means FM, for example on a conveyor belt on which the products lie freely or pressed against one another in an overlapping manner.
  • the shingled stream S is characterized by parameters that relate to each individual product (product parameters) and by parameters that relate to the movement of the products and their relative arrangement in the stream (stream parameters).
  • product parameters are mainly length L, width B and thickness D of the products.
  • the current parameters which relate to the movement of the products, are the current speed v and the distance a between the same product edges lying transversely to the conveying direction F of successive products, the quotient v / a representing the current output l in products per unit of time.
  • the flow parameters which relate to the relative position of the products in the flow, are the position p of the products on the conveyor (center, left or right, or otherwise), the type of overlap u (front edge above, as shown in FIG. 1b) , or leading edge at the bottom, as shown in FIG. 1c) and the orientation o of the products relative to the conveying direction (for example fold at the front or fold at the rear).
  • FIG. 2 shows very schematically an interface 1 according to the invention, which between a device 2, which interprets a shingled stream, and a Device 3, which processes a shingled stream or converts it into another transport formation, is arranged.
  • a device 2 which interprets a shingled stream
  • a Device 3 which processes a shingled stream or converts it into another transport formation.
  • the active interface converts the input current S i into the output current S o by changing current parameters, that is to say by changing (a, p, u), comparing ( ⁇ a, ⁇ p), correcting (f) and / or decoupling ( ⁇ l) acts.
  • the only change to the products that the interface can bring about is a pressing, by means of which, for example, folded products in the area of the fold are easily changed.
  • the active interface differs from a processing point in that it essentially changes only the current parameters, not the product parameters.
  • FIGS. 3a to 3d now schematically show functional elements which the interface according to the invention can contain with the current parameters which can be changed as a result.
  • the basic functional element GE transfer element
  • Figure 3b illustrates a deflection UE.
  • a deflection UE Caused by the deflection of an incoming imbricated stream S i a leaking imbricated stream S o, with the two streams with respect to u distinguish the current parameter by a stream with overhead leading edge, a stream with underlying leading edge (or vice versa ) arises.
  • a deflection element UE consists, in a known manner, for example of a deflection roller 31 and a deflection belt 32 which runs around the deflection roller.
  • the printed products are guided between the deflection roller and the deflection belt during the deflection.
  • there are two conveyor belts the incoming shingled stream S i resting in the original position on one, the outgoing shingled stream S o resting in the upside-down position on the other. It is also conceivable that the deflection element has only one conveyor belt, while the deflection belt takes over the function of the other conveyor belt.
  • the deflection element can also always take on the function of a transfer element, that is to say it can also refer to the current parameters v, a and p act.
  • the operation of a deflection element can be reversed as desired.
  • FIGS. 5a and b An advantageous embodiment of a deflection element UE for the interface according to the invention is described in connection with FIGS. 5a and b.
  • Figure 3c shows a buffer element PE.
  • This essentially consists of two conveyor belts and a buffering means 37. Shifting means can be used as buffering means 37, with which the transfer point between the two conveyor belts, which have different speeds, is locally shifted (extension of the transport route at a lower speed when filling the buffer), or stacking means with which a stack of products is formed between the two conveyor belts.
  • a buffer element PE acts on the current parameter f by closing gaps and can act on the current parameter ⁇ a if the printed products are re-clocked in the buffer element.
  • the buffer element PE acts as a decoupling with regard to power fluctuations ( ⁇ l) between the input side and the output side.
  • the buffer element can also take over the functions of a transfer element.
  • the operation of a buffer element is not reversible.
  • Buffer elements which can be used in an interface according to the invention are known, for example, from the two patent specifications No. EP-0259650 and CH-667258 from the same applicant. In both cases, buffer elements with a locally movable takeover point are involved. A buffer element with stacking means is described in connection with FIG. 6.
  • Figure 3d shows a directional element RE.
  • a straightening element RE the printed products are aligned transversely to the conveying direction with the aid of stops.
  • the directional element has a comparative effect on the current parameter p, that is, it reduces the irregularities ⁇ p.
  • the current parameter p is changed.
  • the directional element RE can simultaneously serve as a takeover element GE for changing the current parameters v, a and p.
  • the current parameter p can be changed or maintained.
  • the interface according to the invention now represents a serial arrangement of functional elements according to FIGS. 3b to 3d (UE, PE, RE), which is designed according to the following construction principle:
  • the number of conveyor belts is as possible small, in that each conveyor belt serves two elements, its start as an interface input or exit from a functional element, its end as an entry into a subsequent functional element or as an interface output.
  • the functional elements are arranged one above the other as possible and thus save space.
  • Functional elements that only have a comparative effect for example a straightening element
  • the interface can be configured for various applications by setting or simple assembly.
  • the shingled stream can be set up in each functional element with respect to the current parameters v, a and p for the following functional element.
  • this setting is generated at the input of the interface, which forms a transfer element between the feeding conveyor belt of the upstream device and the first conveyor belt of the interface.
  • the parameters v, a and p required at the output of the interface are set in the last functional unit, which contains a transfer, so that the current no longer has to be changed at the output of the interface, which in turn is a transfer element.
  • the quality of the current especially if it has been improved by straightening in a last functional element, is no longer impaired at the output.
  • the arrangement of the functional elements one above the other is achieved by a corresponding arrangement of deflection elements.
  • the interface according to the invention has at least one deflection element.
  • the order of the functional elements is such that deflecting elements (UE) alternate with other functional elements (PE, RE).
  • Configurability is realized through several inputs and outputs.
  • the interface according to the invention is further distinguished by the fact that different embodiments of the same functional elements can be used in accordance with the requirements of a specific application of the scale flow, which is equivalent to a further, rather qualitative configuration.
  • Figures 4a to 4c show, in the schematic representation of Figures 3a to 3d, some exemplary embodiments of the interface according to the invention.
  • FIG. 4a shows an interface with two deflection elements UE.1 and UE.2, a buffer element PE and a directional element RE, which can be designed with or without a transfer function.
  • the serial order of the functional units is according to the construction principle: input I, UE.1, PE, UE.2, RE, output O.
  • the interface works with four (or five) conveyor belts, of which a first (input belt 41) the print products Input I to the interface takes over from a means of transport of the upstream shingled stream-laying device, and a last one (output belt 42) transfers the printed products to a means of transportation of the downstream shingled stream-picking device.
  • Both input band 41 and output band 42 take on additional functions.
  • the input band 41 guides the print products, for example, into the first deflection element UE.1
  • the output band 42 guides the print products from the second deflection element UE.2 through the directional element RE if this works without transfer.
  • Two further conveyor belts 45 and 46 are arranged between input belt 41 and output belt 42, both of which likewise each have two different functions.
  • the conveyor belt 46 is at the same time a discharging conveyor belt of the buffer element PE and a feeding conveyor belt of the second deflection element UE.2.
  • the straightening element RE is also a transfer element, an additional conveyor belt is necessary.
  • the straightening element is advantageously arranged directly in front of the outlet O as the last functional element in front of the outlet, so that the printed products cannot be moved out of their aligned position in any functional element following the straightening element RE. For the same reason, it is advantageously also dispensed with that the transfer element of the interface output O is used to change the current parameters v, a or p.
  • the output current S o flowing out of the interface according to FIG. 4a is more uniform than ⁇ p compared to the input current S i .
  • the two currents are decoupled with regard to power fluctuations ⁇ l.
  • the type of overlap u is the same (two redirections).
  • the output current S o has no gaps and can (depending on the design of the buffer element PE) be even with respect to ⁇ a.
  • the current parameters v and a can be changed, essentially depending on the relative speeds of the conveyor belt of the upstream device and the conveyor belt 42.
  • the current parameter p can be changed depending on the arrangement of the conveyor belts.
  • the interface has a buffer element PE, which processes a shingled stream whose stream parameter u (type of overlap) is different from u of the incoming and outgoing shingled stream.
  • FIG. 4b shows a further exemplary embodiment of the interface according to the invention. It has a deflection element UE.1, a buffer element PE and three conveyor belts (41, 45, 46), each conveyor belt forming the output of a functional element and the input of a subsequent functional element.
  • the scale flow is decoupled in this interface with regard to power fluctuations ⁇ l.
  • the type of overlap u changes.
  • the interface does not affect the current parameter ⁇ p. It may or may not act on the current parameters v, a, p and ⁇ a.
  • the buffer element PE used processes a scale stream with the same type of overlap u, which also has the output stream S o .
  • the interface according to FIG. 4b is also conceivable as a configuration of the interface according to FIG. 4a, in that the conveyor belt 46 leads to a second output O 'which can be activated by configuration.
  • FIG. 4c shows a further embodiment of the interface according to the invention, which differs from that according to FIG. 4b by a directional element RE and thus has a comparative effect with respect to ⁇ p.
  • the buffer element PE used processes a scale stream with the same type of overlap u as the input stream S i .
  • This embodiment is also conceivable as a configuration of the embodiment according to FIG. 4a with two inputs I and I '.
  • FIG. 4d shows a very simple embodiment of the interface according to the invention, which is also conceivable as a configuration of one of the embodiments shown above, in that its buffer element is not active or replaced by a conveyor belt 45 'and the second output O' is used. Only the current parameter u is changed in this interface. It cannot act on the current parameters ⁇ a, ⁇ p, f, ⁇ l.
  • Figures 4a to 4d each show a scale flow pattern in the interface, which is directed from the bottom up. It is also possible to operate the interfaces with a general conveying direction from top to bottom if the functional elements are set up accordingly.
  • the function of pressing the printed products mentioned at the outset can be carried out, for example, by a press roller arranged opposite one of the conveyor belts of the interface, by the transverse conveying means of the straightening element or by one of the deflecting elements.
  • FIGS. 5a and b show an embodiment of the deflection element UE which is advantageous for the interface according to the invention, as a side view with viewing direction parallel to the deflection axis (FIG. 5a) and as a top view (FIG. 5b, without return of the belts).
  • the deflection element has a deflection roller 51, a deflection belt 52 and two conveyor belts (53 and 54).
  • the deflection roller 51 and the deflection belt 52 are significantly narrower than the printed products. This can be clearly seen in the top view (FIG. 5b), in which the printed products running out around the deflection roller 51 and out of the deflection point are indicated by dash-dotted lines.
  • the two conveyor belts 53 and 54 are designed as double belts and are arranged on both sides of the deflection roller in the area of the transfer between the deflection roller 51 or deflection belt 52 and the conveyor belt (54 or 53). This is clearly visible in Figure 5b for the conveyor belt 54, which has two sub-belts 54.1 and 54.2.
  • the printed products are sufficiently stable in the area of the deflection, despite the small width of the deflection roller 51 and deflection belt 52, since the deflection radius is chosen to be so small that the printed products stabilize due to their curvature, and thus a good hold between the deflection roller 51 and the deflection belt 52 over their entire width take defined position.
  • the operation of the deflecting element can be reversed as desired.
  • the deflection belt 52 is usually driven and the deflection roller 51 is towed.
  • the drive of the deflection belt 52 which runs around the deflection roller 51, is arranged in such a way that the belt is pulled around the deflection roller in the conveying direction, that is to say that in the conveying direction shown, for example a roller 55 is driven, in the opposite conveying direction a roller 56 is driven.
  • the speed of the deflection belt 52 is greater than the speed of the conveyor belt 54.
  • deflection elements can also be used in the interface unit according to the invention, which have a wider deflection roller and a wider deflection belt, which can then also take over the function of one conveyor belt. In this case, it is also possible to use the deflection point to press the printed products. Additional belts arranged parallel to the deflection belt are also conceivable, for example, for pressing a laterally folded product.
  • FIG. 6 shows an embodiment of a buffer element PE, which is advantageous for the interface according to the invention, looking in the direction transverse to the conveying direction F. It is a buffer element with a stack between the two conveyor belts.
  • the buffer element shown is special advantageous for the device according to the invention because it is very simple and compact to implement.
  • the buffer element has an infeed conveyor belt 61 (only shown as a section) and an outflow conveyor belt 62. In between there is a stationary support 63. Inlet conveyor belt 61, support 63 and outlet conveyor belt 62 are arranged in such a way that the support surface for the printed products increases step-by-step during the transition from one to the other. A transport roller 64 is arranged and driven between the infeed conveyor belt 61 and the support 63 in such a way that it accepts the printed products from the infeed conveyor belt 61 and lifts them slightly.
  • a deflection roller 65 for an auxiliary belt 66 is arranged and driven above the takeover point between the infeed conveyor belt 61 and the transport roller 64 in such a way that the auxiliary belt 66 together with the infeed conveyor belt 61 forms a conveyor channel 67.1 which narrows against the transport roller 64 and which in the region of Transfer from the infeed conveyor belt 61 to the transport roller 64 opens into a conveying gap 67.2, which essentially has a width corresponding to the thickness of the incoming stream of shingles.
  • the printed products conveyed through the conveying gap 67.2 are lifted onto the support 63 and pushed under printed products already lying thereon until they strike a stop 68.
  • the stop 68 is arranged in such a way that a product hits it when its rear edge is being conveyed through the conveying gap 67.2.
  • the auxiliary band 66 equipped with an adhesive surface lifts this rear edge of a printed product in contact with the stop 68 along the circumference of the deflection roller 65 up to a second stop 69, whereby rear edges of printed products already resting on the support 63 are further lifted along the stop 69.
  • a continuous stack of printed products is inserted through the conveyor gap 67.2 between the stops 68 and 69. Gaps in the incoming stream of shingles are closed and its cycle stopped.
  • auxiliary belt 66 provided with an adhesive surface
  • this can also be equipped like a normal conveyor belt, but narrower than the printed products and narrower than the deflecting roller 65. Those parts of the deflecting roller 65 that are not covered by the auxiliary belt 66 and thus come into contact with the printed products come, in this case have an adhesive surface. The printed products are then conveyed from the roll 65 to the stop 69.
  • a removal roller 70 is arranged and driven in such a way that it rests on the stack and conveys the uppermost printed product of the stack from the stack onto the outlet conveyor belt 62, which produces the one produced by the removal roller 70 Shed stream S o promoted.
  • the removal roller 70 can only convey away printed products whose front edges lie above the level of the stop 68.
  • the stop 68 essentially has the task of stopping printed products pushed under the stack and of preventing the stack from being displaced in the conveying direction F by pushing new printed products underneath. In order to be able to perform this task, it must have a height that is greater than the thickness of a printed product. In other words, the stack must have a minimum of printed products at all times, namely as many as it takes to achieve a stack height that is greater than the height of the stop 68.
  • the removal roller 70 can be provided with an adhesive surface to prevent slippage between the roller and the printed product to be pushed away, or with openings through which air is sucked off, such that the printed product to be pushed is sucked onto the removal roller and thereby held.
  • the shingled stream S i entering the buffer element described must have underlying front edges.
  • the stack is created from below and removed from above.
  • the shingled stream S o running out of the buffer element also has lower front edges.
  • the quality of the scale stream S o generated with respect to clock regularity is independent of the quality of the incoming stream S i .
  • At least two vertically arranged, driven worm screws can be provided, which have a corresponding height as specified for the stop 68.
  • the front edge of a printed product pushed under the stack is then pushed into one turn of the worm screws and raised by their rotary movement until it reaches the upper end of the worm screws and the printed product thereby becomes part of the stack, which can be removed from the removal roller.
  • the stack of the buffer element described can also be removed with an investor function.
  • Devices that perform a feeder function are known and, for example, in the American Patent No. US-5042792 or the European patent application EP-OS-0368009 from the same applicant. With a feed function, the shingle spacing a of the shingle stream produced becomes so uniform, that is, ⁇ a so small that the shingle stream meets all requirements. However, the buffer element is then no longer very simple.
  • a further possibility of generating scale streams for higher requirements with regard to uniformity of the scale distance ( ⁇ a) is to use buffer elements which have shifting means for shifting the transfer point between the infeed conveyor belt and the outfeed conveyor belt. As already heated, such buffer elements are known. The advantage of such buffer elements is that the cycle of the incoming shingled stream is not canceled, but only changed. A regular shingled stream emerges from a regular shingled stream. Buffer elements of this type process shingled streams with leading edges lying at the top.
  • FIGS. 7a and b show an embodiment of a straightening element RE, which is advantageous for the interface according to the invention, as a top view (FIG. 7a) and as a side view with a viewing direction transverse to the conveying direction (FIG. 7b).
  • the straightening element essentially consists of a conveyor belt 71 which guides a shingled stream in the conveying direction F through the straightening element, a transverse conveying means (not shown) for displacing the printed products transversely to the conveying direction F and a stop unit 72. It is a one-sided straightening element by moving the printed products transversely to be moved to the conveying direction in only one direction against only one stop unit.
  • the printed products are conveyed into the straightening element with a conveying direction F i , are conveyed there transversely to the main conveying direction F so that a conveying direction F r arises and are finally conveyed out of the straightening element with a conveying direction F o which is parallel to the conveying direction F i runs.
  • a stop unit 72 parallel to the incoming shingled stream is provided to the side of the shingled stream, at a distance x therefrom which is at least as large as a maximum expected deviation ⁇ p from the position p of the incoming shingling stream.
  • transverse conveying means such as, for example, conveyor rollers or conveyor belts angled to the conveying direction or a stop arranged at an angle to the conveying direction can be used as the transverse conveying means of the straightening element.
  • a series of straightening columns 73.1 to 73.6 is advantageously used as the stop unit 72.
  • the straightening columns have a round floor plan and are arranged in a row in the area of the cross-conveyor in a row parallel to the conveying directions F i and F o at a distance x from the side edge of the incoming stream of shingles and are driven in such a way that their surface directed against the shingled stream moves at current speed moved in the direction of conveyance F.
  • the surface of the straightening columns is advantageously rough, for example cross-knurled, so that the printed products not slide on it, but be moved along.
  • the straightening columns can be driven, for example, with a drive belt 74 which is arranged below or above the conveyor belt 71 and is guided for deflection around the straightening columns 73.1 to 73.6, for example around deflection rollers 75.1 to 75.5 arranged between the straightening columns.
  • a drive belt 74 which is arranged below or above the conveyor belt 71 and is guided for deflection around the straightening columns 73.1 to 73.6, for example around deflection rollers 75.1 to 75.5 arranged between the straightening columns.
  • stop plates 76 are advantageously provided between the straightening columns intended. These stop plates are angled and reach under the conveyor belt 71.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Burglar Alarm Systems (AREA)
  • Glass Compositions (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Abstract

The interface according to the invention for printed products conveyed in an imbricated formation is used between an imbricated-stream-delivering device and an imbricated-stream-receiving device. The function of the interface is to modify the flow parameters of the input stream (Si) in such a manner that an output stream (So) is produced which meets the requirements of the downstream imbricated-stream-receiving device. The interface has an input (I) for an input stream (Si) and an output (O) for an output stream (So) and, between the input and output, a serial arrangement of functional elements (UE, PE, RE). The interface has at least one deflector element (UE) and at least one other functional element (PE, RE) and the serial arrangement is such that a deflector element (UE) is always connected between two other functional elements (PE, RE). The interface requires a minimum of conveyor belts (41, 42, 45, 46), since each conveyor belt running out of one functional element is the conveyor belt running into the next functional element. In each functional element, the imbricated stream is adjusted for the next functional element as regards velocity, imbrication spacing and position of the printed products on the conveyor belt. <IMAGE>

Description

Die Erfindung betrifft eine Schnittstelle für Schuppenformationen von Druckprodukten gemäss dem Oberbegriff des Patentanspruches 1 sowie ein Verfahren zum Betrieb einer solchen Schnittstelle. Die erfindungsgemässe Schnittstelle ist aktiv, sie bearbeitet einen Schuppenstrom von Druckprodukten und ist einsetzbar zwischen einer Vorrichtung, die einen Schuppenstrom auslegt und einer Vorrichtung, die einen Schuppenstrom weiterverarbeitet.The invention relates to an interface for scale formations of printed products according to the preamble of claim 1 and a method for operating such an interface. The interface according to the invention is active, it processes a shingled stream of printed products and can be used between a device that designs a shingled stream and a device that processes a shingled stream further.

Schuppenströme von Druckprodukten werden beispielsweise von Rotationspressen, von Abwickelstationen ab Wickeln oder von Anlegern ab Stapeln ausgelegt. Ein Schuppenstrom wird entweder als solcher in einer Prozessstation weiterverarbeitet oder er wird für die Weiterverarbeitung zuerst in eine andere Transportformation verwandelt, beispielsweise in einen Transportstrom, in dem jedes Druckprodukt mittels einer Klammer hängend transportiert wird.Scale flows of printed products are laid out, for example, by rotary presses, from unwinding stations from winding or from investors from stacks. A shingled stream is either further processed as such in a process station or it is first converted into another transport formation for further processing, for example into a transport stream in which each printed product is transported suspended by means of a clamp.

Ein ausgelegter Schuppenstrom hat je nach Druckprodukt und je nach Vorrichtung, von der er ausgelegt wird, bestimmte Eigenschaften. Jede einen Schuppenstrom verarbeitende oder diesen in eine andere Transportformation umwandelnde Vorrichtung stellt an die Eigenschaften des zugeführten Schuppenstroms bestimmte Anforderungen. Damit Schuppenstrom-auslegende und Schuppenstrom-aufnehmende Vorrichtungen möglichst frei kombinierbar sind, müssen sie derart konfiguriert oder konfigurierbar sein, dass in jedem Falle der ausgelegte Strom den Anforderungen der Weiterverarbeitung entspricht, oder es müssen weitere Vorrichtungen zur Anpassung des Schuppenstromes zwischen Schuppenstrom-auslegender und Schuppenstrom-aufnehmender Vorrichtung eingeschaltet werden. Die geforderte Konfiguration oder Konfigurierbarkeit der Schuppenstrom-auslegenden und der Schuppenstrom-verarbeitenden Vorrichtungen vergrössert entweder die Zahl notwendiger Vorrichtungsvarianten oder macht die Vorrichtungen aufwendiger und damit teurer. Das Zwischenschalten von zusätzlichen Vorrichtungen benötigt viel Platz, vor allem, wenn mehr als eine Zusatzvorrichtung notwendig ist.A designed stream of shingles has certain properties depending on the printed product and the device from which it is laid out. Each device that processes a shingled stream or converts it into another transport formation places certain demands on the properties of the shingled stream supplied. So that scale-shedding and shingling-absorbing devices can be combined as freely as possible, they must be configured or configurable in such a way that the laid-out stream corresponds to the requirements of further processing in any case, or further devices for adapting the shingled stream between the shingled stream-laying and shingled stream must be used - Receiving device can be switched on. The required configuration or configurability of the shingled stream designing and shingled stream processing devices either increases the number of necessary device variants or makes the devices more complex and therefore more expensive. Interposition of additional devices takes up a lot of space, especially if more than one additional device is required.

In der EP-A-0 281 887 ist eine Fördervorrichtung für in einer Schuppenformation anfallende Papierprodukte beschrieben, die besonders wirtschaftlich hergestellt werden kann, je nach den Raumverhältnissen oder dem Bedarf zur Ueberbrückung von Richtungsänderungen und gegebenenfalls auch zum Wenden eingesetzt werden kann und einfach aufzustellen ist. Zu diesem Zweck wird die Transportvorrichtung aus einzelnen standardisierten, in sich geschlossenen, vorgefertigten Bauelementen zusammengesetzt. Durch Kombination derartiger Baueinheiten können, entsprechend den Transporterfordernissen für den Produktestrom und den räumlichen Gegebenheiten, Fördervorrichtungen beliebig zusammengestellt werden, deren einzelne Baueinheiten vorgefertigt wurden. Eine dieser verschiedenen standardisierten Baueinheiten ist ein Umlenkelement zum Umlenken des Produktestromes um 90°.EP-A-0 281 887 describes a conveying device for paper products accumulating in a scale formation, which can be produced particularly economically, can be used depending on the space conditions or the need to bridge changes in direction and, if appropriate, also for turning, and is easy to set up . For this purpose, the transport device is assembled from individual standardized, self-contained, prefabricated components. By combining such structural units, conveying devices, the individual structural units of which have been prefabricated, can be put together in accordance with the transport requirements for the product flow and the spatial conditions. One of these various standardized units is a deflection element for deflecting the product flow by 90 °.

Die in der FR-A-2 343 675 offenbarte Vorrichtung dient dazu, den Abstand zwischen aufeinanderfolgenden, flächigen, steifen Gegenständen, die mit unregelmässigen gegenseitigen Abständen in einer Schuppenformation anfallen, zu vergleichmässigen. Zu diesem Zweck werden die ankommenden Gegenstände von oben auf einen Zwischenstapel aufgeschoben. Die Gegenstände werden diesem Zwischenstapel dann von unten in regelmässiger Folge wieder entnommen und in einer vergleichmässigten Schuppenformation weggeführt.The device disclosed in FR-A-2 343 675 serves to even out the distance between successive, flat, rigid objects which occur at irregular mutual distances in a scale formation. For this purpose, the incoming objects are pushed onto an intermediate stack from above. The objects are then removed from this intermediate stack again from below in a regular sequence and taken away in a uniform scale formation.

Es ist nun die Aufgabe der vorliegenden Erfindung, eine Schnittstelle der eingangs genannten Art zu schaffen, die derart ausgestaltet und aktiv sein soll, dass sich der Schuppenstrom, der aus der Schnittstelle ausläuft, vom Schuppenstrom, der in die Schnittstelle einläuft, bezüglich Eigenschaften und/oder bezüglich Qualität unterscheidet, das heisst, dass der Schuppenstrom durch die Schnittstelle für die Schuppenstrom-aufnehmende Vorrichtung adaptiert wird. Die Schnittstelle soll platzsparend, einfach und für möglichst viele Anwendungsfälle einsetzbar sein, d.h. sie soll möglichst viele Eigenschaften eines Schuppenstromes in einem möglichst weiten Rahmen verändern können.It is now the object of the present invention to provide an interface of the type mentioned at the outset, which is to be designed and active in such a way that the scale flow that flows out of the interface differs from the scale flow that flows into the interface with regard to properties and / or differentiates in terms of quality, which means that the Scale flow is adapted through the interface for the scale flow-absorbing device. The interface should be space-saving, simple and can be used for as many applications as possible, ie it should be able to change as many properties of a shingled stream as possible within the broadest possible range.

Diese Aufgabe wird mit einer Schnittstelle gemäss Anspruch 1 gelöst.This object is achieved with an interface according to claim 1.

Bevorzugte Weiterausgestaltungen des Erfindungsgegenstandes sind in den abhängigen Ansprüchen 2-19 umschrieben.Preferred further developments of the subject matter of the invention are described in the dependent claims 2-19.

Vorzugsweise wird die erfindungsgemässe Schnittstelle nach dem Verfahren gemäss den Ansprüchen 20-22 betrieben.The interface according to the invention is preferably operated by the method according to claims 20-22.

Anhand der folgenden Figuren sollen Betrieb und Ausgestaltung der erfindungsgemässen Schnittstelle detailliert beschrieben werden. Dabei zeigen:

Figuren 1a bis 1c
zwei beispielhafte Schuppenströme zur Darstellung der einen Schuppenstrom charakterisierenden Parameter, als Draufsicht (Figur 1a) und als Seitenansicht (Figur 1c);
Figur 2
ein grobes Funktionsschema der erfindungsgemässen Schnittstelle;
Figuren 3a bis 3d
die Funktionselemente, die eine erfindungsgemässe Schnittstelle enthalten können;
Figuren 4a bis 4d
Funktionsschemata von beispielhaften Ausführungsformen der erfindungsgemässen Schnittstelle;
Figuren 5a und b
eine beispielhafte Ausführungsform des Umlenkelementes als Seitenansicht und Draufsicht;
Figur 6
eine beispielhalte Ausführungsform des Pufferelementes;
Figuren 7a und b
eine beispielhafte Ausführungsform des Richtelementes als Draufsicht und Seitenansicht;
The operation and design of the interface according to the invention are to be described in detail with the aid of the following figures. Show:
Figures 1a to 1c
two exemplary scale streams to represent the parameters characterizing a scale stream, as a top view (FIG. 1a) and as a side view (FIG. 1c);
Figure 2
a rough functional diagram of the interface according to the invention;
Figures 3a to 3d
the functional elements which can contain an interface according to the invention;
Figures 4a to 4d
Functional diagrams of exemplary embodiments of the interface according to the invention;
Figures 5a and b
an exemplary embodiment of the deflecting element as a side view and top view;
Figure 6
an exemplary embodiment of the buffer element;
Figures 7a and b
an exemplary embodiment of the straightening element as a top view and side view;

Figuren 1a bis 1c zeigen zwei beispielhafte Schuppenströme von Druckprodukten als Draufsicht (Figur 1a) und als Seitenansicht (Figuren 1b und 1c). Eines der Druckprodukte (P) ist als Beispiel durch Schraffierung hervorgehoben. Figures 1a to 1c show two exemplary scale streams of printed products as a top view (Figure 1a) and a side view (Figures 1b and 1c). One of the printed products (P) is highlighted as an example by hatching.

Der Schuppenstrom S wird in Förderrichtung F gefördert auf einem sich bewegenden Fördermittel FM, beispielsweise auf einem Förderband, auf dem die Produkte sich gegenseitig überlappend frei oder angepresst aufliegen. Der Schuppenstrom S ist charakterisiert durch Parameter, die sich auf jedes einzelne Produkt beziehen (Produktparameter) und durch Parameter, die sich auf die Bewegung der Produkte und auf ihre relative Anordnung im Strom beziehen (Stromparameter). Die Produktparameter sind vor allem Länge L, Breite B und Dicke D der Produkte. Die Stromparameter, die sich auf die Bewegung der Produkte beziehen, sind die Stromgeschwindigkeit v und der Abstand a zwischen quer zur Förderrichtung F liegenden gleichen Produktekanten aufeinanderfolgender Produkte, wobei der Quotient v/a die Stromleistung l in Produkten pro Zeiteinheit darstellt. Die Stromparameter, die sich auf die relative Lage der Produkte im Strom beziehen, sind die Position p der Produkte auf dem Fördermittel (mittig, links oder rechts anschlagend oder anders), die Art der Überlappung u (Vorderkante oben, wie in der Figur 1b dargestellt, oder Vorderkante unten, wie in der Figur 1c dargestellt) und die Orientierung o der Produkte relativ zur Förderrichtung (beispielsweise Falt vorne oder Falt hinten).The shingled stream S is conveyed in the conveying direction F on a moving conveying means FM, for example on a conveyor belt on which the products lie freely or pressed against one another in an overlapping manner. The shingled stream S is characterized by parameters that relate to each individual product (product parameters) and by parameters that relate to the movement of the products and their relative arrangement in the stream (stream parameters). The product parameters are mainly length L, width B and thickness D of the products. The current parameters, which relate to the movement of the products, are the current speed v and the distance a between the same product edges lying transversely to the conveying direction F of successive products, the quotient v / a representing the current output l in products per unit of time. The flow parameters, which relate to the relative position of the products in the flow, are the position p of the products on the conveyor (center, left or right, or otherwise), the type of overlap u (front edge above, as shown in FIG. 1b) , or leading edge at the bottom, as shown in FIG. 1c) and the orientation o of the products relative to the conveying direction (for example fold at the front or fold at the rear).

Die genannten Produkt- und Stromparameter (L, B, D, v, a, p, u, o) sind im Idealfalle über eine Produktionszeit konstant. Im Realfalle wird aber ein Schuppenstrom auch charakterisiert durch darin auftretende Unregelmässigkeiten, Fehlerstellen und zeitliche Schwankungen. Dabei sind für den vorliegenden Fall vor allem wichtig: Unregelmässigkeiten Δa in den Produkteabständen, Unregelmässigkeiten Δp in der Position der Produkte, Fehlerstellen, insbesondere Leerstellen f und zeitliche Schwankungen in der Stromleistung ( Δl = Δ(v/a) ).The product and current parameters mentioned (L, B, D, v, a, p, u, o) are ideally constant over a production time. In real cases, however, a shingled stream is also characterized by irregularities, defects and time fluctuations. In the present case, the following are particularly important: irregularities Δa in the product spacing, irregularities Δp in the position of the products, defects, in particular empty spaces f, and temporal fluctuations in the power output ( Δl = Δ (v / a) ).

Figur 2 zeigt nun sehr schematisch eine erfindungsgemässe Schnittstelle 1, die zwischen einer Vorrichtung 2, die einen Schuppenstrom auslegt, und einer Vorrichtung 3, die einen Schuppenstrom verarbeitet oder in eine andere Transportformation umwandelt, angeordnet ist. Von der Vorrichtung 2 fliessen Druckprodukte Pi in der Form eines Schuppenstromes Si (Inputstrom) in einen Eingang I der Schnittstelle 1. Aus einem Ausgang O der Schnittstelle 1 fliessen Druckprodukte Po in Form eines Schuppenstromes So (Outputstrom) in die Vorrichtung 3. Figure 2 shows very schematically an interface 1 according to the invention, which between a device 2, which interprets a shingled stream, and a Device 3, which processes a shingled stream or converts it into another transport formation, is arranged. From the device 2, printed products P i in the form of a shingled stream S i (input stream) flow into an input I of the interface 1. From an output O of the interface 1, printed products P o flow in the form of a shingled stream S o (output stream) into the device 3 .

Die erfindungsgemässe, aktive Schnittstelle wandelt den Inputstrom Si in den Outputstrom So, indem sie Stromparameter verändert, das heisst, indem sie ändernd (a, p, u), vergleichmässigend (Δa, Δp), korrigierend (f) und/oder entkoppelnd (Δl) wirkt. Die durch die Schnittstelle fliessenden Produkte werden dabei im wesentlichen nicht verändert ( P i = P o

Figure imgb0002
). Die einzige Veränderung an den Produkten, die die Schnittstelle bewirken kann, ist eine Pressung, durch die beispielsweise gefaltete Produkte im Bereiche des Faltes leicht verändert werden. Die aktive Schnittstelle unterscheidet sich von einer Verarbeitungsstelle dadurch, dass sie im wesentlichen nur Stromparameter, keine Produktparameter verändert.The active interface according to the invention converts the input current S i into the output current S o by changing current parameters, that is to say by changing (a, p, u), comparing (Δa, Δp), correcting (f) and / or decoupling (Δl) acts. The products flowing through the interface are essentially not changed ( P i = P O
Figure imgb0002
). The only change to the products that the interface can bring about is a pressing, by means of which, for example, folded products in the area of the fold are easily changed. The active interface differs from a processing point in that it essentially changes only the current parameters, not the product parameters.

Je nach Konfiguration der Schnittstelle können verschiedene Stromparameter verändert werden, wobei die Parameter v und a, die durch die Stromleistung korreliert sind, nur derart verändert werden können, dass die Leistung 1 im Zeitmittel für Input- und Outputstrom im wesentlichen gleich gross ist.Depending on the configuration of the interface, different current parameters can be changed, whereby the parameters v and a, which are correlated by the current power, can only be changed in such a way that the power 1 in the time average for input and output current is essentially the same.

Figuren 3a bis 3d zeigen nun schematisch Funktionselemente, die die erfindungsgemässe Schnittstelle enthalten kann, mit den Stromparametern, die dadurch verändert werden können. FIGS. 3a to 3d now schematically show functional elements which the interface according to the invention can contain with the current parameters which can be changed as a result.

Figur 3a stellt als Grund-Funktionselement ein einfaches Übergabeelement GE dar, in dem der Schuppenstrom von einem Transportband an ein anderes übergeben wird. Sind die Geschwindigkeiten der beiden Transportbänder nicht gleich gross, unterscheidet sich der in das Übergabeelement einlaufende Schuppenstrom Si vom auslaufenden Schuppenstrom So durch einen veränderten Stromparameter a (Produkteabstände), wobei die Stromleistung l = v/a

Figure imgb0003
konstant bleibt. Je nach Ausrichtung der beiden Transportbänder aufeinander verändert sich auch der Stromparameter p (Produkteposition auf dem Band). Der Betrieb eines Übergabeelementes kann beliebig reversiert werden. FIG. 3a represents a simple transfer element GE as the basic functional element, in which the shingled stream is transferred from one conveyor belt to another. If the speeds of the two conveyor belts are not the same, the shingled stream S i entering the transfer element differs from the outgoing shingled stream S o by a changed stream parameter a (product distances), the power output l = v / a
Figure imgb0003
remains constant. The current parameter p (product position on the belt) also changes depending on the alignment of the two conveyor belts. The operation of a transfer element can be reversed as desired.

Wie die Figuren 3b bis 3d zeigen werden, ist das Grund-Funktionselement GE (Übergabeelement) in den eigentlichen Funktionselementen zwingend enthalten oder kann darin integriert sein.As FIGS. 3b to 3d will show, the basic functional element GE (transfer element) is mandatory in the actual functional elements or can be integrated therein.

Figur 3b stellt ein Umlenkelement UE dar. Durch die Umlenkung entsteht aus einem einlaufenden Schuppenstrom Si ein auslaufender Schuppenstrom So, wobei sich die beiden Ströme bezüglich dem Stromparameter u unterscheiden, indem aus einem Strom mit obenliegenden Vorderkanten ein Strom mit untenliegenden Vorderkanten (oder umgekehrt) entsteht. Figure 3b illustrates a deflection UE. Caused by the deflection of an incoming imbricated stream S i a leaking imbricated stream S o, with the two streams with respect to u distinguish the current parameter by a stream with overhead leading edge, a stream with underlying leading edge (or vice versa ) arises.

Ein Umlenkelement UE besteht in bekannter Weise beispielsweise aus einer Umlenkrolle 31 und einem Umlenkband 32, das um die Umlenkrolle läuft. Die Druckprodukte werden bei der Umlenkung zwischen Umlenkrolle und Umlenkband geführt. Dazu kommen zwei Transportbänder, wobei der einlaufende Schuppenstrom Si in ursprünglicher Lage auf dem einen aufliegt, der auslaufende Schuppenstrom So in umgedrehter Lage auf dem anderen aufliegt. Es ist auch denkbar, dass das Umlenkelement nur ein Transportband aufweist, während das Umlenkband die Funktion des anderen Transportbandes übernimmt.A deflection element UE consists, in a known manner, for example of a deflection roller 31 and a deflection belt 32 which runs around the deflection roller. The printed products are guided between the deflection roller and the deflection belt during the deflection. In addition there are two conveyor belts, the incoming shingled stream S i resting in the original position on one, the outgoing shingled stream S o resting in the upside-down position on the other. It is also conceivable that the deflection element has only one conveyor belt, while the deflection belt takes over the function of the other conveyor belt.

Da in einem Umlenkelement UE immer auch mindestens eine Übergabe von einem Transportband auf das Umlenkband und/oder vom Umlenkband auf ein Transportband stattfindet, kann das Umlenkelement zusätzlich immer auch die Funktion eines Übergabeelementes übernehmen, das heisst es kann zusätzlich auf die Stromparameter v, a und p wirken. Der Betrieb eines Umlenkelementes ist beliebig reversierbar.Since in a deflection element UE there is always at least one transfer from a conveyor belt to the deflection belt and / or from the deflection belt to a conveyor belt, the deflection element can also always take on the function of a transfer element, that is to say it can also refer to the current parameters v, a and p act. The operation of a deflection element can be reversed as desired.

Eine vorteilhafte Ausführungsform eines Umlenkelementes UE für die erfindungsgemässe Schnittstelle wird im Zusammenhang mit den Figuren 5a und b beschrieben.An advantageous embodiment of a deflection element UE for the interface according to the invention is described in connection with FIGS. 5a and b.

Figur 3c zeigt ein Pufferelement PE. Dieses besteht im wesentlichen aus zwei Transportbändern und einem Puffermittel 37. Als Puffermittel 37 können Verschiebungsmittel eingesetzt werden, mit denen die Übernahmestelle zwischen den beiden Transportbändern, die verschiedene Geschwindigkeiten aufweisen, lokal verschoben wird (Verlängerung der Transportstrecke mit kleinerer Geschwindigkeit beim Füllen des Puffers), oder Stapelmittel, mit denen zwischen den beiden Transportbändern ein Stapel von Produkten gebildet wird. Ein Pufferelement PE wirkt auf den Stromparameter f, indem Lücken geschlossen werden, und kann auf den Stromparameter Δa wirken, wenn die Druckprodukte im Pufferelement neu eingetaktet werden. Zudem wirkt das Pufferelement PE als Entkopplung bezüglich Leistungsschwankungen (Δl) zwischen Inputseite und Outputseite. Figure 3c shows a buffer element PE. This essentially consists of two conveyor belts and a buffering means 37. Shifting means can be used as buffering means 37, with which the transfer point between the two conveyor belts, which have different speeds, is locally shifted (extension of the transport route at a lower speed when filling the buffer), or stacking means with which a stack of products is formed between the two conveyor belts. A buffer element PE acts on the current parameter f by closing gaps and can act on the current parameter Δa if the printed products are re-clocked in the buffer element. In addition, the buffer element PE acts as a decoupling with regard to power fluctuations (Δl) between the input side and the output side.

Da auch im Pufferelement PE der Schuppenstrom von einem Transportband auf ein anderes übergeben werden muss, kann das Pufferelement auch die Funktionen eines Übergabeelementes übernehmen. Der Betrieb eines Pufferelementes ist nicht reversierbar.Since the shingled stream must also be transferred from one conveyor belt to another in the buffer element PE, the buffer element can also take over the functions of a transfer element. The operation of a buffer element is not reversible.

Pufferelemente, die in einer erfindungsgemässen Schnittstelle anwendbar sind, sind beispielsweise aus den beiden Patentschriften Nr. EP-0259650 und CH-667258 derselben Anmelderin bekannt. In beiden Fällen handelt es sich um Pufferelemente mit örtlich verschiebbarer Übernahmestelle. Ein Pufferelement mit Stapelmittel wird im Zusammenhang mit der Figur 6 beschrieben.Buffer elements which can be used in an interface according to the invention are known, for example, from the two patent specifications No. EP-0259650 and CH-667258 from the same applicant. In both cases, buffer elements with a locally movable takeover point are involved. A buffer element with stacking means is described in connection with FIG. 6.

Figur 3d zeigt ein Richtelement RE. In einem Richtelement RE werden die Druckprodukte mit Hilfe von Anschlägen quer zur Förderrichtung ausgerichtet. Das Richtelement wirkt vergleichmässigend auf den Stromparameter p, das heisst es verkleinert die Unregelmässigkeiten Δp. Der Stromparameter p wird dabei verändert. Je nach Anordnung und Anforderungen ist es notwendig, das Richtelement RE mit einem Übernahmeelement zu kombinieren, wie dies gestrichelt angedeutet ist. In derartigen Fällen kann das Richtelement RE gleichzeitig als Übernahmeelement GE zur Veränderung der Stromparameter v, a und p dienen. In einem Richtelement mit Übergabefunktion kann der Stromparameter p verändert oder beibehalten werden. Figure 3d shows a directional element RE. In a straightening element RE, the printed products are aligned transversely to the conveying direction with the aid of stops. The directional element has a comparative effect on the current parameter p, that is, it reduces the irregularities Δp. The current parameter p is changed. Depending on the arrangement and requirements, it is necessary to combine the straightening element RE with a takeover element, as indicated by dashed lines. In such cases, the directional element RE can simultaneously serve as a takeover element GE for changing the current parameters v, a and p. In a directional element with a transfer function, the current parameter p can be changed or maintained.

Richtelemente sind beispielsweise bekannt aus der europäischen Patentschrift Nr. 0223941 derselben Anmelderin. Eine für die erfindungsgemässe Schnittstelle vorteilhafte Ausführungsform wird im Zusammenhang mit der Figuren 7a und b beschrieben.Straightening elements are known, for example, from European Patent No. 0223941 by the same applicant. An embodiment which is advantageous for the interface according to the invention is described in connection with FIGS. 7a and b.

Mit den Funktionselementen gemäss Figuren 3a bis 3d können alle Stromparameter bis auf die Orientierung o der Produkte im Strom im Sinne der Aufgabenstellung für die erfindungsgemässe Schnittstelle verändert werden. Die erfindungsgemässe Schnittstelle stellt nun eine serielle Anordnung von Funktionselementen gemäss Figuren 3b bis 3d (UE, PE, RE) dar, die nach dem folgenden Bauprinzip ausgestaltet ist: Die Zahl der Transportbänder ist möglichst klein, dadurch dass jedes Transportband zwei Elementen dient, sein Anfang als Schnittstelleneingang oder Auslauf aus einem Funktionselement, sein Ende als Einlauf in ein folgendes Funktionselement oder als Schnittstellenausgang. Die Funktionselemente sind möglichst übereinander und dadurch platzsparend angeordnet. Funktionselemente, die nur vergleichmässigend wirken (bespielsweise Richtelement), sind unmittelbar vor dem Schnittstellenausgang angeordnet. Die Schnittstelle ist durch Einstellung oder einfache Montage für verschiedene Anwendungen konfigurierbar.With the functional elements according to FIGS. 3a to 3d, all current parameters can be changed except for the orientation o of the products in the current in the sense of the task for the interface according to the invention. The interface according to the invention now represents a serial arrangement of functional elements according to FIGS. 3b to 3d (UE, PE, RE), which is designed according to the following construction principle: The number of conveyor belts is as possible small, in that each conveyor belt serves two elements, its start as an interface input or exit from a functional element, its end as an entry into a subsequent functional element or as an interface output. The functional elements are arranged one above the other as possible and thus save space. Functional elements that only have a comparative effect (for example a straightening element) are arranged directly in front of the interface exit. The interface can be configured for various applications by setting or simple assembly.

Da in jedem Funktionselement (UE, PE, RE) die Grundfunktion (GE) integriert ist oder sein kann, kann in jedem Funktionselement der Schuppenstrom bezüglich der Stromparameter v, a und p für des folgende Funktionselement eingerichtet werden. Für das erste Funktionselement wird diese Einstellung am Eingang der Schnittstelle, der ein Übergabeelement zwischen dem zuführenden Transportband der vorgeschalteten Vorrichtung und dem ersten Transportband der Schnittstelle bildet, erzeugt. In der letzten Funktionseinheit, die eine Übergabe beinhaltet, werden die am Ausgang der Schnittstelle geforderten Parameter v, a und p eingestellt, sodass am Ausgang der Schnittstelle, die wiederum ein Übergabeelement darstellt, der Strom nicht mehr verändert werden muss. Dadurch wird die Qualität des Stromes, speziell, wenn sie durch Richten in einem letzten Funktionselement noch verbessert wurde, am Ausgang nicht mehr beeinträchtigt.Since the basic function (GE) is or can be integrated in each functional element (UE, PE, RE), the shingled stream can be set up in each functional element with respect to the current parameters v, a and p for the following functional element. For the first functional element, this setting is generated at the input of the interface, which forms a transfer element between the feeding conveyor belt of the upstream device and the first conveyor belt of the interface. The parameters v, a and p required at the output of the interface are set in the last functional unit, which contains a transfer, so that the current no longer has to be changed at the output of the interface, which in turn is a transfer element. As a result, the quality of the current, especially if it has been improved by straightening in a last functional element, is no longer impaired at the output.

Die Anordnung der Funktionselemente übereinander wird erreicht durch entsprechende Anordnung von Umlenkelementen. Die erfindungsgemässe Schnittstelle weist mindestens ein Umlenkelement auf. Die Reihenfolge der Funktionselemente ist derart, dass Umlenkelmente (UE) mit anderen Funktionselementen (PE, RE) abwechseln.The arrangement of the functional elements one above the other is achieved by a corresponding arrangement of deflection elements. The interface according to the invention has at least one deflection element. The order of the functional elements is such that deflecting elements (UE) alternate with other functional elements (PE, RE).

Die Konfigurierbarkeit wird durch mehrere Ein- bzw. Ausgänge realisiert.Configurability is realized through several inputs and outputs.

Die erfindungsgemässe Schnittstelle zeichnet sich ferner dadurch aus, dass entsprechend den Anforderungen einer bestimmten Anwendung an den Schuppenstrom verschiedene Ausführungsformen gleicher Funktionselemente eingesetzt werden können, was einer weiteren, eher qualitativen Konfiguration gleichkommt.The interface according to the invention is further distinguished by the fact that different embodiments of the same functional elements can be used in accordance with the requirements of a specific application of the scale flow, which is equivalent to a further, rather qualitative configuration.

Das der erfindungsgemässen Schnittstelle zugrunde liegende Bauprinzip führt zu einer standardisiert konfigurierbaren und trotzdem sehr kompakten und sehr leistungsfähigen Schnittstelle.The construction principle on which the interface according to the invention is based leads to a standardized, configurable, yet very compact and very powerful interface.

Figuren 4a bis 4c zeigen, in der schematischen Darstellungsweise der Figuren 3a bis 3d einige beispielhafte Ausführungsformen der erfindungsgemässen Schnittstelle. Figures 4a to 4c show, in the schematic representation of Figures 3a to 3d, some exemplary embodiments of the interface according to the invention.

Figur 4a zeigt eine Schnittstelle mit zwei Umlenkelementen UE.1 und UE.2, einem Pufferelement PE und einem Richtelement RE, das mit oder ohne Übergabefunktion ausgebildet sein kann. Die serielle Reihenfolge der Funktionseinheiten ist gemäss Bauprinzip: Eingang I, UE.1, PE, UE.2, RE, Ausgang O. Die Schnittstelle arbeitet mit vier (bzw. fünf) Transportbändern, von denen ein erstes (Inputband 41) die Druckprodukte am Eingang I zur Schnittstelle von einem Transportmittel der vorgeschalteten Schuppenstrom-auslegenden Vorrichtung übernimmt, und ein letztes (Outputband 42) die Druckprodukte an ein Transportmittel der nachgeschalteten Schuppenstrom-aufnehmende Vorrichtung übergibt. FIG. 4a shows an interface with two deflection elements UE.1 and UE.2, a buffer element PE and a directional element RE, which can be designed with or without a transfer function. The serial order of the functional units is according to the construction principle: input I, UE.1, PE, UE.2, RE, output O. The interface works with four (or five) conveyor belts, of which a first (input belt 41) the print products Input I to the interface takes over from a means of transport of the upstream shingled stream-laying device, and a last one (output belt 42) transfers the printed products to a means of transportation of the downstream shingled stream-picking device.

Sowohl Inputband 41 als auch Outputband 42 übernehmen zusätzliche Funktionen. Das Inputband 41 führt die Druckprodukte beispielsweise in das erste Umlenkungselement UE.1, das Outputband 42 führt die Druckprodukte aus dem zweiten Umlenkelement UE.2 durch das Richtelement RE, wenn dieses ohne Übergabe funktioniert. Zwischen Inputband 41 und Outputband 42 sind zwei weitere Transportbänder 45 und 46 angeordnet, die beide ebenfalls je zwei verschiedene Funktionen haben Das Transportband 45 ist gleichzeitig abführendes Transportband des ersten Umlenkelementes UE.1 und zuführendes Transportband des Pufferelementes PE. Das Transportband 46 ist gleichzeitig abführendes Transportband des Pufferelementes PE und zuführendes Transportband des zweiten Umlenkelementes UE.2.Both input band 41 and output band 42 take on additional functions. The input band 41 guides the print products, for example, into the first deflection element UE.1, the output band 42 guides the print products from the second deflection element UE.2 through the directional element RE if this works without transfer. Two further conveyor belts 45 and 46 are arranged between input belt 41 and output belt 42, both of which likewise each have two different functions. The conveyor belt 46 is at the same time a discharging conveyor belt of the buffer element PE and a feeding conveyor belt of the second deflection element UE.2.

Wenn das Richtelement RE auch Übergabeelement ist, ist ein weiteres Transportband notwendig. Das Richtelement ist vorteilhafterweise unmittelbar vor dem Ausgang O als letztes Funktionselement vor dem Ausgang angeordnet, damit die Druckprodukte in keinem auf das Richtelement RE folgenden Funktionselement wieder aus ihrer ausgerichteten Lage verschoben werden können. Aus demselben Grunde wird vorteilhafterweise auch darauf verzichtet, dass das Übergabeelement des Schnittstellenausgangs O zur Veränderung der Stromparameter v, a oder p verwendet wird.If the straightening element RE is also a transfer element, an additional conveyor belt is necessary. The straightening element is advantageously arranged directly in front of the outlet O as the last functional element in front of the outlet, so that the printed products cannot be moved out of their aligned position in any functional element following the straightening element RE. For the same reason, it is advantageously also dispensed with that the transfer element of the interface output O is used to change the current parameters v, a or p.

Der aus der Schnittstelle gemäss Figur 4a ausfliessende Outputstrom So ist gegenüber dem Inputstrom Si vergleichmässigt bezüglich Δp. Die beiden Ströme sind entkoppelt bezüglich Leistungsschwankungen Δl. Die Überlappungsart u ist dieselbe (zwei Umlenkungen). Der Outputstrom So hat keine Lücken und kann (je nach Ausgestaltung des Pufferelementes PE) bezüglich Δa vergleichmässigt sein. Die Stromparameter v und a können verändert sein, im wesentlichen abhängig von den relativen Geschwindigkeiten des Transportbandes der vorgeschalteten Vorrichtung und des Transportbandes 42. Der Stromparameter p kann verändert sein je nach Anordnung der Transportbänder. Die Schnittstelle hat ein Pufferelement PE, das einen Schuppenstrom verarbeitet, dessen Stromparameter u (Überlappungsart) vom u des einlaufenden und auslaufenden Schuppenstromes verschieden ist.The output current S o flowing out of the interface according to FIG. 4a is more uniform than Δp compared to the input current S i . The two currents are decoupled with regard to power fluctuations Δl. The type of overlap u is the same (two redirections). The output current S o has no gaps and can (depending on the design of the buffer element PE) be even with respect to Δa. The current parameters v and a can be changed, essentially depending on the relative speeds of the conveyor belt of the upstream device and the conveyor belt 42. The current parameter p can be changed depending on the arrangement of the conveyor belts. The interface has a buffer element PE, which processes a shingled stream whose stream parameter u (type of overlap) is different from u of the incoming and outgoing shingled stream.

Figur 4b zeigt eine weitere beispielhafte Ausführungsform der erfindungsgemässen Schnittstelle. Sie weist ein Umlenkelement UE.1, ein Pufferelement PE und drei Transportbänder (41, 45, 46) auf, wobei jedes Transportband den Ausgang eines Funktionselementes und den Eingang eines folgenden Funktionselementes bildet. In dieser Schnittstelle wird der Schuppenstrom bezüglich Leistungsschwankungen Δl entkoppelt. Die Überlappungsart u ändert sich. Die Schnittstelle wirkt nicht auf den Stromparameter Δp. Sie kann auf die Stromparameter v, a, p und Δa wirken oder nicht. Das eingesetzte Pufferelement PE bearbeitet eine Schuppenstrom mit gleicher Überlappungsart u, die auch der Outputstrom So aufweist. FIG. 4b shows a further exemplary embodiment of the interface according to the invention. It has a deflection element UE.1, a buffer element PE and three conveyor belts (41, 45, 46), each conveyor belt forming the output of a functional element and the input of a subsequent functional element. The scale flow is decoupled in this interface with regard to power fluctuations Δl. The type of overlap u changes. The interface does not affect the current parameter Δp. It may or may not act on the current parameters v, a, p and Δa. The buffer element PE used processes a scale stream with the same type of overlap u, which also has the output stream S o .

Die Schnittstelle gemäss Figur 4b ist auch denkbar als Konfiguration der Schnittstelle gemäss Figur 4a, indem das Transportband 46 zu einem durch Konfiguration aktivierbaren zweiten Ausgang O' führt.The interface according to FIG. 4b is also conceivable as a configuration of the interface according to FIG. 4a, in that the conveyor belt 46 leads to a second output O 'which can be activated by configuration.

Figur 4c zeigt eine weitere Ausführungsart der erfindungsgemässen Schnittstelle, die sich von derjenigen gemäss Figur 4b durch ein Richtelement RE unterscheidet und dadurch vergleichmässigend bezüglich Δp wirkt. Das eingesetzte Pufferelement PE bearbeitet einen Schuppenstrom mit derselben Überlappungsart u, die auch der Inputstrom Si aufweist. Auch diese Ausführungsart ist als Konfiguration der Ausführungsform gemäss Figur 4a vorstellbar mit zwei Eingängen I und I'. FIG. 4c shows a further embodiment of the interface according to the invention, which differs from that according to FIG. 4b by a directional element RE and thus has a comparative effect with respect to Δp. The buffer element PE used processes a scale stream with the same type of overlap u as the input stream S i . This embodiment is also conceivable as a configuration of the embodiment according to FIG. 4a with two inputs I and I '.

Figur 4d zeigt eine sehr einfache Ausführungsform der erfindungsgemässen Schnittstelle, die ebenfalls als Konfiguration einer der vorangehend dargestellten Ausführungsformen vorstellbar ist, indem deren Pufferelement nicht aktiv oder durch ein Transportband 45' ersetzt und der zweite Ausgang O' benutzt ist. In dieser Schnittstelle wird nur der Stromparameter u zwingend verändert. Sie kann nicht auf die Stromparameter Δa, Δp, f, Δl wirken. FIG. 4d shows a very simple embodiment of the interface according to the invention, which is also conceivable as a configuration of one of the embodiments shown above, in that its buffer element is not active or replaced by a conveyor belt 45 'and the second output O' is used. Only the current parameter u is changed in this interface. It cannot act on the current parameters Δa, Δp, f, Δl.

Die Figuren 4a bis 4d zeigen jeweils einen Schuppenstromverlauf in der Schnittstelle, der von unten nach oben gerichtet ist. Es ist auch möglich, die Schnittstellen mit einer allgemeinen Förderrichtung von oben nach unten zu betreiben, wenn die Funktionselemente entsprechend eingerichtet sind.Figures 4a to 4d each show a scale flow pattern in the interface, which is directed from the bottom up. It is also possible to operate the interfaces with a general conveying direction from top to bottom if the functional elements are set up accordingly.

Die eingangs erwähnte Funktion des Pressens der Druckprodukte kann beispielsweise durch eine gegenüber einem der Transportbänder der Schnittstelle angeordnete Presswalze übernommen werden, vom Querfördermittel des Richtelementes oder von einem der Umlenkelemente.The function of pressing the printed products mentioned at the outset can be carried out, for example, by a press roller arranged opposite one of the conveyor belts of the interface, by the transverse conveying means of the straightening element or by one of the deflecting elements.

Figuren 5a und b zeigen eine für die erfindungsgemässe Schnittstelle vorteilhafte Ausführungsform des Umlenkelementes UE, als Seitenansicht mit Blickrichtung parallel zur Umlenkachse (Figur 5a) und als Draufsicht (Figur 5b, ohne Retourtrum der Bänder). Das Umlenkelement weist eine Umlenkrolle 51, ein Umlenkband 52 und zwei Transportbänder (53 und 54) auf. Die Umlenkrolle 51 und das Umlenkband 52 sind bedeutend schmaler als die Druckprodukte. Dies ist deutlich zu erkennen in der Draufsicht (Figur 5b), in der die gegen oben um die Umlenkrolle 51 und aus der Umlenkstelle auslaufenden Druckprodukte strichpunktiert angedeutet sind. Die beiden Transportbänder 53 und 54 sind als Doppelbänder ausgebildet und im Bereich der Übergabe zwischen Umlenkrolle 51 bzw. Umlenkband 52 und Transportband (54 bzw. 53) beidseitig der Umlenkrolle angeordnet. Dies ist deutlich sichtbar in der Figur 5b für das Transportband 54, das zwei Teilbänder 54.1 und 54.2 aufweist. Die Druckprodukte sind im Bereich der Umlenkung trotz der geringen Breite von Umlenkrolle 51 und Umlenkband 52 genügend stabil, da der Umlenkradius derart klein gewählt wird, dass die Druckprodukte durch ihre Krümmung stabilisiert und dadurch zwischen Umlenkrolle 51 und Umlenkband 52 festgehalten über ihre ganze Breite eine gut definierte Position einnehmen.FIGS. 5a and b show an embodiment of the deflection element UE which is advantageous for the interface according to the invention, as a side view with viewing direction parallel to the deflection axis (FIG. 5a) and as a top view (FIG. 5b, without return of the belts). The deflection element has a deflection roller 51, a deflection belt 52 and two conveyor belts (53 and 54). The deflection roller 51 and the deflection belt 52 are significantly narrower than the printed products. This can be clearly seen in the top view (FIG. 5b), in which the printed products running out around the deflection roller 51 and out of the deflection point are indicated by dash-dotted lines. The two conveyor belts 53 and 54 are designed as double belts and are arranged on both sides of the deflection roller in the area of the transfer between the deflection roller 51 or deflection belt 52 and the conveyor belt (54 or 53). This is clearly visible in Figure 5b for the conveyor belt 54, which has two sub-belts 54.1 and 54.2. The printed products are sufficiently stable in the area of the deflection, despite the small width of the deflection roller 51 and deflection belt 52, since the deflection radius is chosen to be so small that the printed products stabilize due to their curvature, and thus a good hold between the deflection roller 51 and the deflection belt 52 over their entire width take defined position.

Der Betrieb des Umlenkelementes kann beliebig reversiert werden. Üblicherweise ist das Umlenkband 52 angetrieben und die Umlenkrolle 51 geschleppt. Der Antrieb des Umlenkbandes 52, das um die Umlenkrolle 51 läuft, ist derart angeordnet, dass das Band in Förderrichtung um die Umlenkrolle gezogen wird, das heisst, dass bei der dargestellter Förderrichtung beispielsweise eine Rolle 55, bei umgekehrter Förderrichtung eine Rolle 56 angetrieben ist. Die Geschwindigkeit des Umlenkbandes 52 ist dabei grösser als die Geschwindigkeit des Transportbandes 54.The operation of the deflecting element can be reversed as desired. The deflection belt 52 is usually driven and the deflection roller 51 is towed. The drive of the deflection belt 52, which runs around the deflection roller 51, is arranged in such a way that the belt is pulled around the deflection roller in the conveying direction, that is to say that in the conveying direction shown, for example a roller 55 is driven, in the opposite conveying direction a roller 56 is driven. The speed of the deflection belt 52 is greater than the speed of the conveyor belt 54.

Selbstverständlich sind auch Umlenkelemente in der erfindungsgemässen Schnittstelleneinheit einsetzbar, die eine breitere Umlenkrolle und ein breiteres Umlenkband aufweisen, das dann auch die Funktion des einen Transportbandes übernehmen kann. In diesem Falle ist es möglich, die Umlenkstelle auch zu einer Pressung der Druckprodukte anzuwenden. Auch zusätzliche parallel zum Umlenkband angeordnete Bänder sind beispielsweise zur Pressung eines seitlich gefalteten Produktes vorstellbar.Of course, deflection elements can also be used in the interface unit according to the invention, which have a wider deflection roller and a wider deflection belt, which can then also take over the function of one conveyor belt. In this case, it is also possible to use the deflection point to press the printed products. Additional belts arranged parallel to the deflection belt are also conceivable, for example, for pressing a laterally folded product.

Figur 6 zeigt eine für die erfindungsgemässe Schnittstelle vorteilhafte Ausführungsform eines Pufferelementes PE mit Blickrichtung quer zur Förderrichtung F. Es handelt sich um ein Pufferelement mit einem Stapel zwischen den beiden Transportbändern. Das dargestellte Pufferelement ist besonders vorteilhaft für die erfindungsgemässe Vorrichtung, weil es sehr einfach und kompakt realisierbar ist. FIG. 6 shows an embodiment of a buffer element PE, which is advantageous for the interface according to the invention, looking in the direction transverse to the conveying direction F. It is a buffer element with a stack between the two conveyor belts. The buffer element shown is special advantageous for the device according to the invention because it is very simple and compact to implement.

Das Pufferelement weist wie bereits beschrieben ein Einlauf-Transportband 61 (nur als Teilstück dargestellt) und ein Auslauf-Transportband 62 auf. Dazwischen befindet sich eine stationäre Auflage 63. Einlauf-Transportband 61, Auflage 63 und Auslauf-Transportband 62 sind derart angeordnet, dass sich die Auflagefläche für die Druckprodukte beim Übergang von einem zum anderen stufenförmig erhöht. Zwischen dem Einlauf-Trausportband 61 und der Auflage 63 ist eine Transportrolle 64 derart angeordnet und angetrieben, dass sie die Druckprodukte vom Einlauf-Transportband 61 übernimmt und dabei leicht anhebt. Über der Übernahmestelle zwischen Einlauf-Transportband 61 und Transportrolle 64 ist eine Umlenkrolle 65 für ein Hilfsband 66 derart angeordnet und angetrieben, dass das Hilfsband 66 zusammen mit dem Einlauf-Transportband 61 einen sich gegen die Transportrolle 64 verengenden Förderkanal 67.1 bildet, der im Bereich der Übergabe von Einlauf-Transportband 61 zu Transportrolle 64 in einen Förderspalt 67.2 mündet, der im wesentlichen eine der Dicke des einlaufenden Schuppenstromes entsprechende Breite aufweist. Die durch den Förderspalt 67.2 geförderten Druckprodukte werden auf die Auflage 63 gehoben und unter bereits darauf liegende Druckprodukte geschoben, bis sie an einem Anschlag 68 anstossen. Der Anschlag 68 ist derart angeordnet, dass ein Produkt daran anstösst, wenn seine Hinterkante gerade durch den Förderspalt 67.2 gefördert wird. Das mit einer adhäsiven Oberfläche ausgestattete Hilfsband 66 hebt diese Hinterkante eines am Anschlag 68 anstehenden Druckproduktes entlang dem Umfang der Umlenkrolle 65 bis an einen zweiten Anschlag 69, wodurch Hinterkanten von bereits auf der Auflage 63 aufliegenden Druckprodukten weiter am Anschlag 69 entlang emporgehoben werden. Durch kontinuierliches Einschieben von Druckprodukten durch den Förderspalt 67.2 entsteht zwischen den Anschlägen 68 und 69 ein Stapel. Dabei werden Lücken des einlaufenden Schuppenstromes geschlossen und sein Takt aufgehoben.As already described, the buffer element has an infeed conveyor belt 61 (only shown as a section) and an outflow conveyor belt 62. In between there is a stationary support 63. Inlet conveyor belt 61, support 63 and outlet conveyor belt 62 are arranged in such a way that the support surface for the printed products increases step-by-step during the transition from one to the other. A transport roller 64 is arranged and driven between the infeed conveyor belt 61 and the support 63 in such a way that it accepts the printed products from the infeed conveyor belt 61 and lifts them slightly. A deflection roller 65 for an auxiliary belt 66 is arranged and driven above the takeover point between the infeed conveyor belt 61 and the transport roller 64 in such a way that the auxiliary belt 66 together with the infeed conveyor belt 61 forms a conveyor channel 67.1 which narrows against the transport roller 64 and which in the region of Transfer from the infeed conveyor belt 61 to the transport roller 64 opens into a conveying gap 67.2, which essentially has a width corresponding to the thickness of the incoming stream of shingles. The printed products conveyed through the conveying gap 67.2 are lifted onto the support 63 and pushed under printed products already lying thereon until they strike a stop 68. The stop 68 is arranged in such a way that a product hits it when its rear edge is being conveyed through the conveying gap 67.2. The auxiliary band 66 equipped with an adhesive surface lifts this rear edge of a printed product in contact with the stop 68 along the circumference of the deflection roller 65 up to a second stop 69, whereby rear edges of printed products already resting on the support 63 are further lifted along the stop 69. A continuous stack of printed products is inserted through the conveyor gap 67.2 between the stops 68 and 69. Gaps in the incoming stream of shingles are closed and its cycle stopped.

Anstatt eines mit einer adhäsiven Oberfläche versehenen Hilfsbandes 66 kann dieses auch wie ein normales Transportband ausgerüstet sein aber schmaler als die Druckprodukte und schmaler als die Umlenkrolle 65. Diejenigen Teile der Umlenkrolle 65, die vom Hilfsband 66 nicht bedeckt sind und damit mit den Druckprodukten in Berührung kommen, tragen in diesem Falle eine adhäsive Oberfläche. Die Druckprodukte werden dann von der Rolle 65 an den Anschlag 69 gefördert.Instead of an auxiliary belt 66 provided with an adhesive surface, this can also be equipped like a normal conveyor belt, but narrower than the printed products and narrower than the deflecting roller 65. Those parts of the deflecting roller 65 that are not covered by the auxiliary belt 66 and thus come into contact with the printed products come, in this case have an adhesive surface. The printed products are then conveyed from the roll 65 to the stop 69.

Über dem Stapel, der auf der Auflage 63 aufliegt, ist eine Abtragrolle 70 derart angeordnet und angetrieben, dass sie auf dem Stapel aufliegt und das jeweils oberste Druckprodukt des Stapels vom Stapel auf das Auslauf-Transportband 62 fördert, das den von der Abtragrolle 70 erzeugten Schuppenstrom So weiterfördert.Above the stack, which rests on the support 63, a removal roller 70 is arranged and driven in such a way that it rests on the stack and conveys the uppermost printed product of the stack from the stack onto the outlet conveyor belt 62, which produces the one produced by the removal roller 70 Shed stream S o promoted.

Die Abtragrolle 70 kann nur Druckprodukte wegfördern, deren Vorderkanten über dem Niveau des Anschlages 68 liegen. Der Anschlag 68 hat im wesentlichen die Aufgabe, unter den Stapel geschobene Druckprodukte zu stoppen und zu verhindern, dass der Stapel durch das Darunterschieben neuer Druckprodukte in Förderrichtung F verschoben wird. Um diese Aufgabe erfüllen zu können, muss er eine Höhe haben, die grösser ist als die Dicke eines Druckproduktes. Das heisst mit anderen Worten, dass der Stapel in jedem Moment ein Minimum von Druckprodukten aufweisen muss, nämlich so viele, wie es braucht, um eine Stapelhöhe zu erreichen, die grösser ist als die Höhe des Anschlages 68.The removal roller 70 can only convey away printed products whose front edges lie above the level of the stop 68. The stop 68 essentially has the task of stopping printed products pushed under the stack and of preventing the stack from being displaced in the conveying direction F by pushing new printed products underneath. In order to be able to perform this task, it must have a height that is greater than the thickness of a printed product. In other words, the stack must have a minimum of printed products at all times, namely as many as it takes to achieve a stack height that is greater than the height of the stop 68.

Je weiter gegen das Auslauf-Transportband 62 die Abtragrolle 70 angebracht ist, desto länger treibt sie ein abzutragendes Druckprodukt an, das heisst desto grösser wird der Produkteabstand des erzeugten Schuppenstromes (bei gleicher Geschwindigkeit der Abtragrolle). Die Abtragrolle 70 kann zur Verhinderung von Schlupf zwischen der Rolle und dem wegzuschiebenden Druckprodukt mit einer adhäsiven Oberfläche versehen sein oder mit Öffnungen, durch die Luft abgesaugt wird, derart, dass das zu schiebende Druckprodukt an die Abtragrolle gesaugt und dadurch festgehalten wird. Je weniger Schlupf zwischen der Abtagrolle und dem zu schiebenden Produkt entsteht, desto höher ist die Qualität des entstehenden Schuppenstromes bezüglich Unregelmässigkeiten im Produkteabstand (Taktregelmässigkeit).The further against the outlet conveyor belt 62 the removal roller 70 is attached, the longer it drives a printed product to be removed, that is to say the greater the product distance of the shingled stream generated (at same speed of the removal roller). The removal roller 70 can be provided with an adhesive surface to prevent slippage between the roller and the printed product to be pushed away, or with openings through which air is sucked off, such that the printed product to be pushed is sucked onto the removal roller and thereby held. The less slippage between the cutting roll and the product to be pushed, the higher the quality of the resulting stream of shingles with regard to irregularities in the product spacing (regularity between cycles).

Der in das beschriebene Pufferelement einlaufende Schuppenstrom Si muss unterliegende Vorderkanten aufweisen. Der Stapel wird von unten erstellt und von oben abgetragen. Der aus dem Pufferelement auslaufende Schuppenstrom So hat ebenfalls untenliegende Vorderkanten. Die Qualität des erzeugten Schuppenstromes So bezüglich Taktregelmässigkeit ist unabhängig von der Qualität des einlaufenden Stromes Si.The shingled stream S i entering the buffer element described must have underlying front edges. The stack is created from below and removed from above. The shingled stream S o running out of the buffer element also has lower front edges. The quality of the scale stream S o generated with respect to clock regularity is independent of the quality of the incoming stream S i .

Anstelle des Anschlages 68 können mindestens zwei senkrecht angeordnete, angetriebene Schneckenschrauben vorgesehen werden, die eine entsprechende Höhe wie für den Anschlag 68 angegeben, aufweisen. Die Vorderkante eines unter den Stapel geschobenen Druckproduktes wird dann in je eine Windung der Schneckenschrauben geschoben und durch deren Drehbewegung angehoben bis sie das obere Ende der Schneckenschrauben erreicht und dadurch das Druckprodukt Teil des Stapels wird, der von der Abtragrolle abgetragen werden kann.Instead of the stop 68, at least two vertically arranged, driven worm screws can be provided, which have a corresponding height as specified for the stop 68. The front edge of a printed product pushed under the stack is then pushed into one turn of the worm screws and raised by their rotary movement until it reaches the upper end of the worm screws and the printed product thereby becomes part of the stack, which can be removed from the removal roller.

Sind die Anforderungen bezüglich Taktregelmässigkeit des erzeugten Schuppenstromes sehr hoch, kann der Stapel des beschriebenen Pufferelementes auch mit einer Anlegertunktion abgetragen werden. Vorrichtungen, die eine Anlegerfunktion ausführen, sind bekannt und beispielsweise in der amerikanischen Patentschrift Nr US- 5042792 oder der europäischen Offenlegungsschrift EP-OS-0368009 derselben Anmelderin beschrieben. Mit einer Anlegerfunktion wird der Schuppenabstand a des produzierten Schuppenstromes derart gleichmässig, das heisst Δa derart klein, dass der Schuppenstrom allen Anforderungen genügt. Das Pufferelement ist dann allerdings nicht mehr sehr einfach.If the requirements with regard to the regularity of the scale flow generated are very high, the stack of the buffer element described can also be removed with an investor function. Devices that perform a feeder function are known and, for example, in the American Patent No. US-5042792 or the European patent application EP-OS-0368009 from the same applicant. With a feed function, the shingle spacing a of the shingle stream produced becomes so uniform, that is, Δa so small that the shingle stream meets all requirements. However, the buffer element is then no longer very simple.

Eine weitere Möglichkeit, Schuppenströme für höhere Anforderungen bezüglich Gleichmässigkeit des Schuppenabstandes (Δa) zu erzeugen, besteht darin, Pufferelemente einzusetzen, die Verschiebungsmittel zur Verschiebung der Übergabestelle zwischen Einlauf-Transportband und Auslauf-Transportband aufweisen Wie bereits erwärmt, sind derartige Pufferelemente bekannt. Der Vorteil derartiger Pufferelemente besteht darin, dass der Takt des einlaufenden Schuppenstromes nicht aufgehoben, sondern lediglich verändert wird. Aus einem regelmässigen Schuppenstrom entsteht dabei wieder ein regelmässiger Schuppenstrom. Derartige Pufferelemente verarbeiten Schuppenströme mit obenliegenden Vorderkanten.A further possibility of generating scale streams for higher requirements with regard to uniformity of the scale distance (Δa) is to use buffer elements which have shifting means for shifting the transfer point between the infeed conveyor belt and the outfeed conveyor belt. As already heated, such buffer elements are known. The advantage of such buffer elements is that the cycle of the incoming shingled stream is not canceled, but only changed. A regular shingled stream emerges from a regular shingled stream. Buffer elements of this type process shingled streams with leading edges lying at the top.

Figuren 7a und b zeigen eine für die erfindungsgemässe Schnittstelle vorteilhafte Ausführungsform eines Richtelementes RE als Draufsicht (Figur 7a) und als Seitenansicht mit Blickrichtung quer zur Förderrichtung (Figur 7b). Das Richtelement besteht im wesentlichen aus einem Transportband 71, das einen Schuppenstrom in Förderrichtung F durch das Richtelement führt, einem Querfördermittel (nicht dargestellt) zur Verschiebung der Druckprodukte quer zur Förderrichtung F und einer Anschlagseinheit 72. Es ist ein einseitiges Richtelement, indem die Druckprodukte quer zur Förderrichtung in nur einer Richtung gegen nur eine Anschlagseinheit verschoben werden. Die Druckprodukte werden mit einer Förderrichtung Fi in das Richtelement gefördert, werden dort zusätzlich zur Hauptförderrichtung F quer dazu gefördert, sodass eine Förderrichtung Fr entsteht und werden schliesslich mit einer Förderrichtung Fo aus dem Richtelement gefördert, die parallel zur Förderrichtung Fi verläuft. Im Bereiche der Förderung in Richtung Fr ist seitlich vom Schuppenstrom, in einem Abstand x davon, der mindestens so gross ist wie eine maximal zu erwartende Abweichung Δp von der Position p des einlaufenden Schuppenstromes, eine zum einlaufenden Schuppenstrom parallele Anschlagseinheit 72 vorgesehen. Durch die Querfördermittel werden die Druckprodukte gegen den Anschlag 72 bewegt und an diesem ausgerichtet. Sie verlassen das Richtelement bezüglich Δp vergleichmässigt und mit einer Position p o = p i +x

Figure imgb0004
.FIGS. 7a and b show an embodiment of a straightening element RE, which is advantageous for the interface according to the invention, as a top view (FIG. 7a) and as a side view with a viewing direction transverse to the conveying direction (FIG. 7b). The straightening element essentially consists of a conveyor belt 71 which guides a shingled stream in the conveying direction F through the straightening element, a transverse conveying means (not shown) for displacing the printed products transversely to the conveying direction F and a stop unit 72. It is a one-sided straightening element by moving the printed products transversely to be moved to the conveying direction in only one direction against only one stop unit. The printed products are conveyed into the straightening element with a conveying direction F i , are conveyed there transversely to the main conveying direction F so that a conveying direction F r arises and are finally conveyed out of the straightening element with a conveying direction F o which is parallel to the conveying direction F i runs. In the area of the conveyance in the direction F r , a stop unit 72 parallel to the incoming shingled stream is provided to the side of the shingled stream, at a distance x therefrom which is at least as large as a maximum expected deviation Δp from the position p of the incoming shingling stream. The printed products are moved against the stop 72 and aligned with the latter by means of the transverse conveying means. You leave the straightening element with a uniform position with regard to Δp p O = p i + x
Figure imgb0004
.

Da die Regelmässigkeit eines Schuppenstromes bezüglich Δp bei jeder weiteren Handhabung verschlechtert wird, ist es vorteilhaft, das Richtelement unmittelbar vor dem Ausgang der Schnittstelle anzuordnen und die Stromparameter a und p (unter Berücksichtigung von x) schon beim Auslauf aus dem Funktionselement, das vor dem Richtelement angeordnet ist, derart einrichten, dass sie den Anforderungen der dem Richtelement nachgeschalteten Vorrichtungen entsprechen. Auf diese Art muss der gerichtete Schuppenstrom vor der Weiterverarbeitung nicht mehr manipuliert werden.Since the regularity of a scale flow with respect to Δp deteriorates with every further handling, it is advantageous to arrange the straightening element immediately before the exit of the interface and the current parameters a and p (taking x into account) as soon as they exit the functional element, which is in front of the straightening element is arranged so that they meet the requirements of the devices downstream of the straightening element. In this way, the directed shingled stream no longer has to be manipulated before further processing.

Als Querfördermittel des Richtelementes können bekannte Querfördermittel wie beispielsweise gewinkelt zur Förderrichtung gerichtete Förderrollen oder Förderbänder oder ein gewinkelt zur Förderrichtung angeordneter Anschlag eingesetzt werden.Known transverse conveying means such as, for example, conveyor rollers or conveyor belts angled to the conveying direction or a stop arranged at an angle to the conveying direction can be used as the transverse conveying means of the straightening element.

Als Anschlagseinheit 72 wird vorteilhafterweise eine Reihe von Richtsäulen 73.1 bis 73.6 eingesetzt. Die Richtsäulen haben einen runden Grundriss und sind im Bereiche der Querfördermittel in einer Reihe parallel zu den Förderrichtungen Fi und Fo mit einem Abstand x von der Seitenkante des einlaufenden Schuppenstromes angeordnet und werden derart angetrieben, dass ihre gegen den Schuppenstrom gerichtete Oberfläche sich mit Stromgeschwindigkeit in Förderrichtung F bewegt. Die Oberfläche der Richtsäulen ist vorteilhafterweise rauh, beispielsweise kreuzgerändelt, damit die Druckprodukte nicht daran gleiten, sondern mitbewegt werden. Der Antrieb der Richtsäulen kann beispielsweise mit einem Antriebsband 74 realisiert werden, das unterhalb oder über dem Transportband 71 angeordnet ist und zur Umlenkung um die Richtsäulen 73.1 bis 73.6 beispielsweise um zwischen den Richtsäulen angeordnete Umlenkrollen 75.1 bis 75.5 geführt ist.A series of straightening columns 73.1 to 73.6 is advantageously used as the stop unit 72. The straightening columns have a round floor plan and are arranged in a row in the area of the cross-conveyor in a row parallel to the conveying directions F i and F o at a distance x from the side edge of the incoming stream of shingles and are driven in such a way that their surface directed against the shingled stream moves at current speed moved in the direction of conveyance F. The surface of the straightening columns is advantageously rough, for example cross-knurled, so that the printed products not slide on it, but be moved along. The straightening columns can be driven, for example, with a drive belt 74 which is arranged below or above the conveyor belt 71 and is guided for deflection around the straightening columns 73.1 to 73.6, for example around deflection rollers 75.1 to 75.5 arranged between the straightening columns.

Um zu verhindern, dass Druckprodukte, die beispielsweise mit einer Ecke gegen einen Abstand zwischen zwei Richtsäulen gefördert werden, zwischen den Richtsäulen durch und unter das Fördermittel getragen werden, wobei sie aus dem Strom gefördert und beschädigt werden könnten, sind zwischen den Richtsäulen vorteilhafterweise Anschlagbleche 76 vorgesehen. Diese Anschlagbleche sind abgewinkelt und reichen unter das Transportband 71.In order to prevent printed products which are conveyed, for example, with a corner against a distance between two straightening columns, from being carried through and below the conveying means between the straightening columns, which could be conveyed and damaged from the flow, stop plates 76 are advantageously provided between the straightening columns intended. These stop plates are angled and reach under the conveyor belt 71.

Claims (22)

  1. A work station for lapped formations (S) of printed products (P), with an intake (I) for an incoming lapped formation (Si ) and an outlet (O) for an outgoing lapped formation (So) and with a deflection element (UE) arranged between the intake (I) and the outlet (O) for the deflection of the lapped formation, characterized in that between the intake (I) for the lapped formation (S) delivered by a first device (2) and the outlet (O) for the outgoing lapped formation (So ) to be processed in a second device (3), there are arranged at least two functional elements (UE, PE, RE) disposed one after the other, which are designed for modifying flow parameters characterizing the properties of the lapped formation (S), such as speed (v), interspacing (a), position (p), the kind of overlap (u) and orientation (o) of the printed products (P), and defective points (f), one functional element whereof is the deflection element (UE) which deflects the lapped formation by 180° for altering the kind of overlap (u) of the printed products (P), wherein, when one deflection element (UE) and two other functional elements (PE, RE), such as buffer elements (PE) and aligning elements (RE), are provided, the deflection element (UE) is always arranged between the other two functional elements (PE, RE) with a view to a space-saving arrangement; and that between two respectively adjoining functional elements (UE, PE, RE) a conveyor belt (42, 45, 46) is provided which is at one and the same time the conveyor belt moving out of one functional element and the conveyor belt moving into the following functional element.
  2. A work station according to claim 1, characterized in that apart from one deflection element (UE) or deflection elements, it has a buffer element (PE) as a further functional element.
  3. A work station according to claim 1 or 2, characterized in that apart from one deflection element (UE) or deflection elements, it has an aligning element (RE) as a further functional element.
  4. A work station according to claim 3, characterized in that the aligning element (RE) is arranged directly ahead of the outlet (O).
  5. A work station according to claims 1, 2 and 3, characterized in that it has two deflection elements (UE.1, UE.2), a buffer element (PE) arranged between the two deflection elements (UE.1, UE.2), an aligning element (RE) arranged between the second deflection element (UE.2) and the outlet (O), and four conveyor belts (41, 42, 45, 46) which connect the intake (I) to the functional elements (UE.1, UE.2, PE, RE) and the latter to one another and to the outlet (O).
  6. A work station according to claim 5, characterized in that it has a second outlet (O') and that it can be configured or is configured in such a way that the lapped formation is carried from the buffer element (PE) or from the first deflection element (UE.1) directly to the second outlet (O').
  7. A work station according to claim 5, characterized in that it has a second intake (I') and that it is configured or can be configured in such a way that the lapped formation is carried from the second intake (I') directly to the buffer element (PE) or to the second deflection (UE.2).
  8. A work station according to claim 1, characterized in that the deflection element (UE) has a guide roller (51), a deflecting belt (52) and two conveyor belts (53 and 54) leading to the guide roller, which consist of two parallel part belts (54.1 and 54.2) each, between which the guide roller (51) is arranged.
  9. A work station according to claim 2, characterized in that the buffer element (PE) has an intake conveyor belt (61) and an outgoing conveyor belt (62), between which there is arranged a stationary support (63), that between the intake conveyor belt (61) and the stationary support (63) there are arranged conveyor means (64, 65, 66) by means of which printed products (P) are pushed from the intake conveyor belt (61) onto the support (63), and that above the support (63) there is arranged a removal means (70) for the removal of printed products (P) stacked on the support.
  10. A work station according to claim 9, characterized in that the
    support (63) is delimited at the front, in the conveyance direction, by a stop (68).
  11. A work station according to claim 9 or 10, characterized in that the conveyor means (64, 65, 66) form a conveyance gap (67.2) that ends at the rear, in the conveyance direction, on the support (63).
  12. A work station according to claim 11, characterized in that in the end zone of the conveyance gap (67.2) there are provided lifting means (65, 66), by means of which the rear edges of the printed products (P) conveyed through the conveyance gap (67.2) are lifted above the level of the support (63).
  13. A work station according to claim 12, characterized in that the conveyor means (64, 65, 66) and the lifting means (65, 66) are in the zone of the conveyance gap (67.2), a conveyor roller (64) and a guide roller (65) with an auxiliary belt (66) running above them.
  14. A work station according to claim 13, characterized in that parts of the guide roller (65) or the auxiliary belt (66) have an adhesive surface.
  15. A work station according to claim 3, characterized in that the aligning element (RE) has a conveyor belt (71) for conveying a lapped formation (S) through the aligning element, transverse conveyor means for the conveyance of the printed products (P) of the lapped formation (S) transversely to the conveyance direction (F) of the conveyor belt (71), and a stop unit (72) that is pa rallel in the zone of the transverse conveyor means to the incoming lapped formation (S) and interspaced therefrom.
  16. A work station according to claim 15, characterized in that the stop unit (72) consists of a number of alignment columns (73.1 - 73.6) with a round cross-section.
  17. A work station according to claim 16, characterized in that the alignment columns (73.1 - 73.6) are connected for operation to a drive (74) in such a way that their surface facing the lapped formation rotates in the conveyance direction (F) and at the conveyance speed of the lapped formation (S).
  18. A work station according to claim 16 or 17, characterized in that the surface of the alignment columns (73.1 - 73.6) is cross-knurled.
  19. A work station according to one of claims 16 to 18, characterized in that stop plates (76) are provided between the alignment columns (73.1 - 73.6).
  20. A method for operating a work station according to one of claims 1 to 7, characterized in that as the incoming lapped formation (Si) is delivered into the work station (1), the flow parameters: speed (v), product interspacing (a), and product position (p) are set up at the intake (I) for the first functional element, and that in each functional element these flow parameters (v, a, p) are set for the next functional element.
  21. A method according to claim 20, characterized in that the flow parameters: speed (v), product interspacing (a), and product position (p) are set up in the last or in the last two functional elements for the clapped formation (So) moving out of the work station (1), so that they do not have to be changed on delivery at the outlet (O).
  22. A method according to claim 20 or 21, characterized in that in the last functional element ahead of the outlet (O), the lapped formation (S) is evened out as far as the lateral alignment is concerned.
EP93105576A 1992-04-27 1993-04-03 Active work station for a stream of printed products in shingled formation Expired - Lifetime EP0567807B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH132592 1992-04-27
CH1325/92 1992-04-27

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DE59306763D1 (en) 1997-07-24
US5443254A (en) 1995-08-22
ATE154569T1 (en) 1997-07-15

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