EP0847949B1 - Device for forming a stack of printed sheets, where these are piled on the edge - Google Patents

Description

The invention relates to a device for education one perpendicular to the standing printed sheets extending stack according to the preamble of the claim 1.

With such a known device (WO92 / 21599), which in particular for forming stacks of envelopes the envelopes are used by a filing device with serrated locks isolated on the rear end of the fed to the stack forming stack. If he is forming stack has reached the desired size, the two support elements, which are behind the rear end of the forming stack in a standby position and with their free ends a little bit over the pile support protrude protruding, quickly to the rear end of the stack of envelopes moved so that they between the back end of the stack and the one that follows next envelope to be fed. there only reach the upper ends of the two support elements between the finished stack and the new ones Stack. Then the two support elements move above and thereby penetrate ever deeper between the stacking Envelopes. The support elements follow at the same time the direction of movement of the stack. Serve this way the support elements simultaneously to initiate stack separation as well as for the subsequent support of the separated Stack in the further course of processing.

At another known facility (AT-B-393 820) the separating device from above into the on the stack support growing stack driven, the separator is designed to be cut between them those in the stack with a certain pressure in denser mutual investment held sheet can penetrate. This drive-in process can, however, at least with sensitive Sheet material the risk of damage cannot be excluded.

One with the designation 327 under the Müller brand Martini known pole delivery or educational facility a stack of printed sheets standing next to each other (Muller Martini company brochure "The boom 327 - automation in the medium performance range ", print date 4.86) the latter are in partial scale flows, corresponding to the Length of a stack to be formed, in the vertical conveying direction an edition of two parallel, endless revolving Chains fed. Which is characterized by an encircling Bands and the horizontally driven support forming Stack will be on its front as on its back by one each resting on support elements of the chain End plate limited. In this relatively loose form, the Stack in the direction of its extension between two pliers parts a press that moves the stack from the ends from and then laterally for strapping relocated.

In another known device of the designation 244 becomes the stack formed on the revolving chains pressed from the chains by a pair of pliers, lifted off and laterally shifted for strapping in the pressed state.

The formation of the rod-like stacks is with these Devices for the division of the chains receiving the stack bound, d. H. also that a change in stack length only limited and possible with a relatively high workload is. Furthermore, there are several, discontinuous work steps required in different directions and levels are to be carried out.

The invention has for its object a device of the type mentioned at the beginning to create little space claimed and with which the supplied in scale streams Printing sheets can be transferred in batches without interruption.

According to the invention, this object is achieved by the indicator of claim 1 solved. Advantageous further developments result from the subclaims.

Fig. 1

eine schematische Seitenansicht einer Einrichtung zur Bildung eines Stapels von Druckbogen,

Fig. 2

eine vergrößerte schematische Darstellung der Einrichtung gemäß Fig. 1 im Beschickungsbereich der Stapelauflage,

Fig. 3

eine der Beschickung nach Fig. 2 folgende Stapelbildungssituation,

Fig. 4

eine gegenüber Fig. 3 fortgeschrittene Stapelbildungssituation,

Fig. 5

einen weiteren Arbeitsschritt der Stapelbildung,

Fig. 6

einen vergrößerten Querschnitt durch die erfindungsgemäße Einrichtung und

Fig. 7

einen vergrößerten Längsschnitt durch die erfindungsgemäße Einrichtung.

In the following description, an embodiment of the invention is explained in more detail with reference to the drawing. Show here:

Fig. 1

1 shows a schematic side view of a device for forming a stack of printed sheets,

Fig. 2

2 shows an enlarged schematic illustration of the device according to FIG. 1 in the loading area of the stacking support,

Fig. 3

2 a stack formation situation following the loading according to FIG. 2,

Fig. 4

an advanced stack formation situation compared to FIG. 3,

Fig. 5

a further step of stack formation,

Fig. 6

an enlarged cross section through the device according to the invention and

Fig. 7

an enlarged longitudinal section through the device according to the invention.

Fig. 1 shows the inventive device 1 for education one perpendicular to the one lined up Sheet extending stack.

The printed sheets are over in the present example a conveyor device 2 after it has been centered or aligned and then pressed the existing fold have been in the form of a stream of shingles or of the following Partial scale flows, which are the length of the to be produced Determine the stack, approximately in the vertical direction from fed to a horizontal stacking support 3 above. In doing so the printed sheets in the case of multi-sheet design with the fold set down on the stacking support 3 approximately vertically and at a located at the end of the conveyor 2 Slidable structure 4, which is a the front end of the End plate 5 forming stack supports on the stack support 3 piled up to form a stack, with the supporting structure 4 itself along the stack support 3 extending parallel guide arrangement 6 driven at the speed of stacking is. This situation is indicated in FIG. 2.

One next to the conveying end of the conveying device 2 outside the effective stacking pad 3 separable device 8 is inserted between two of the printed sheets fed, once the front of the two specific printed sheets is at least approximately on the stack support 3. This is done by moving the separator 8 in the direction of stacking and can regarding Reliability will be favored if before the end of funding the conveyor device 2 the scale flow through a gap formation device is interrupted in partial scale flows or the distance between two printed sheets is increased.

That is, It should be noted that the dimension of the stacking pad 3 protruding separating elements 9 is less than that Scale spacing between two printed sheets.

The separator 8 is transverse in pairs at a distance arranged to the direction of stacking, and each separator 8 in turn has two from a separator 9 and one Support element 10 formed part pairs, which along the stack support arranged opposite each other in mirror image are.

Inserting the separator 8 between two printed sheets takes place with adjoining partial pairs and superscript Separating elements 9, at least in the lower area the stacked printed sheets the formation of individual stacks arises.

The separating elements become in the course of the further stack formation 9 forming a larger gap in the stack 7 from each other away. Thereupon the separating elements 9 accompanying support elements 10 retracted into the gap, so far that the emerging rear end of the leading, supporting from the front end of the following stack 7 can separate. Fig. 3 shows the separating 9 and support elements 10 (alternatively) laterally offset, although it is transverse to the direction of stack movement are arranged approximately in alignment.

When support elements 10 are ejected, the separating elements become 9 withdrawn from the stack 7, as shown in FIG. 4 is illustrated. While the rear support members 10 delimit the front end of a re-forming stack, the front support elements 10 follow at the rear the complete batch 7.

As illustrated in FIG. 1, the stacking support 3 can at least in the front area of the stacking section by belts 45 driven endlessly in the stack formation direction be designed so that an optional pre-compression of the Stack 7 can be achieved.

The drive of the belts 45 can be both independent and also take place depending on the stack formation speed.

After a distance traveled on the stack support 3 is with a further structure 11, which as well Structure 4 is moved on the guide assembly 6, a end plate forming the rear end of the leading stack 7 12 lifted from a side magazine 13 and behind the stack 7 installed approximately leaning against the support elements 10. Then the support elements 10 below the stack support 3 are lowered, whereupon the stack 7 with the Back rests on the end plate 12. 4 is the preliminary one Lifting the end plate 12 out of a plate magazine 13 shown at about the height of the stack support 3.

In the meantime the Stack 7 through the structures 4 and 11 transporting it pressed together on the stack support 3 and then in a strapping device arranged at the end of the stacking support 3 14 tied (see Fig. 1).

The bound stack 7 is then using the structures 4 and 11 placed on a lateral transport device.

Subsequently, the structures 4 and 11 on the guide arrangement 6 in the area of a newly growing Partial stack moved back. The structures 4 and 11 have meanwhile one on its side facing the magazine 13 for the front end of the stack in production 7 certain end plate 5 added and lay them to the front of the continuously forming stack 7.

Fig. 5 conveys the last step in which the end plate 5 transverse to the stack support 3 in front of the partial stack is displaced so that the support elements immediately afterwards 10 at the front of the partial stack under the stacking surface 3 can be lowered.

Thereafter, the structure 11 is in the end plate removal position of the end plate magazine 13 retracted.

It must be added that the structures 4, 11 each Above or laterally displaceable from the stack support 3 Have pressure plate pair 15, 16, 17, 18, each of which the pressure plates 15, 17 facing the end plate magazine 13 additionally for the removal or the installation of the end plates 12 are destined in the stack.

Fig. 6 shows an embodiment according to the invention Device 1, in particular the guide arrangement 6 and the drive and actuating elements.

The guide arrangement 6 consists u. a. two in parallel opposite, in the direction of stack formation, attached to a machine stand or frame link-shaped guide rails 19, 20 on which the structures 4 and 11 are mobile. For this purpose is a table-shaped support 21 is provided on which the drive and Actuators are attached. One at support 21 screwed adapter 22 has a bearing pin 23 a roller 24 engaging in the guide rail 20 turns.

The one above the stack support 3 that runs parallel to this Guide arrangement 6 for the structures 4, 11 applies also as a suspension device for the drive and actuating elements the device according to the invention.

The guide arrangement 6 has at least approximately Length of the production line of a stack from the impact of the Scale flow on the stack support 3 to the finished stack 7 at the end of a press 25. The supports 21 of the structures 4, 11 laterally overlap the stack support 3 and point on its underside a transverse to the direction of movement of the Structures 4, 11 extending guide rod 26, the is attached to both side support ends. On the guide rod 26 each structure 4, 11 are two each pliers parts 27, 28 projecting at the bottom and are laterally displaceable, the lateral movement distance of a tong part 27, 28 approximately from the vertical plane in the longitudinal central axis of the Stacking support 3 up to the side edge of the support 21 is measured. Here is the pliers part 28 for removal the end plate 12 from the magazine 13 associated guide rod section trained longer.

The lateral displacement of the pliers parts 27, 28 on the Guide rod 26 takes place via a traction mechanism 29, the is connected on the drive side to a motor 30. The traction mechanism 29 consists of one drive wheel 31 each the motor shaft and one mounted on the pliers part 27, 28 Gear 32, which rotate about vertical axes and through one Timing belts 33 are connected to the drive.

Of course, instead of a geared motor 30 and traction mechanism gear 29 for the lateral drive of the Plier parts at least partially pneumatic or hydraulic Actuators such as piston-cylinder units are used if they are suitable for a synchronous drive.

The stabilization of the tong parts 27, 28 with respect the direction of movement forming a stack becomes - as in Fig. 7 shown in more detail - by one with the pliers part 27, 28 connected, at the free end one in a guide link 34 engaging roller 35 having boom 36 achieved, with the guide link 34 on the underside of the support 21 at its cross to the direction of stack movement extending side is attached. The transverse guidance of the pliers parts 27, 28 is by their (releasable) attachment to the the guide rod 26 slidably mounted boom 36 reached. On the guide assembly 6 are for the production of Stack 7 a total of four of the just described as possible Drive units for the lateral movement of the tong parts 27, 28, d. H. two drive units for each structure 4, 11 provided.

Because of the simple strapping between the Pliers parts 27, 28 are the individual band Plier parts 27, 28 above the dash-dotted line Stack 7 formed by adjacent recesses, which form a free space 43 for the upper band guide 44.

Fig. 6 mediates the lateral end positions of the pliers parts 27, 28 on the one hand with a solid line in the Stacking position (inside) and on the other hand dash-dotted in the return position of a supporting structure 4, 11 (outside), where pliers part 28 in the laterally offset position for receiving of end plates 12 from the end plate magazine 13 a has more distant side position.

The longitudinal drive of the structures 4, 11 above the stack formation is done according to FIG. 6 by a lying Gear motor 37 which is fixed on the support 21 and by a drive pinion 38 with one on the guide rail 19 attached rack 39 combs.

An extension 42 of the drive pinion 38 carrying Shaft 41 of the transmission 40 connects the not shown opposite drive pinion with the mirror image arranged Guide rail 20 on the same rack 39.

The rest of the constructive details are the expert mediated by Figures 6 and 7.

1 is the stack formation section on the stack support 3 is followed by a strapping device 14, the one between the pliers parts 27, 28 approximately in the longitudinal axis of the stack 7 extending section of a tape guide 44, the front vertical band guide portion 46 for the passage of the stack into the strapping device 14 is designed to be lowerable. The strapping 47 is removed from a drum 48 and from below via a Stack 7 surrounding guide articulated and welded at the ends.

With the present device 1, the formed Stack 7 is strapped one or more times, one way the control of the structures 4, 11 and pressure plates 15 to 18 is to be made.

Claims (19)

1. Device for forming a stack (7) which extends vertically to printed sheets piled on edge, comprising a conveying device (2) which delivers printed sheets to a stack support (3) which is arranged approximately horizontally and designed for forming a stack, and an at least two part separating device (8) which engages between two printed sheets for the purpose of forming a stack (7) and which is insertible at the entry end of the stack support (3) with both parts adjacent to each other at the bottom into the delivered flow of scales or between two delivered partial scale flows, and the portion leading in the direction of stack forming is associated with the rear end of an established stack (7), and with a support element (10) which is associated with the rear end of a support element (10) which can be lifted and lowered and the trailing part of which is associated with the front end of a following stack (7), as well as with a support element (10) which is associated with the front end and which can be lifted and lowered, characterised in that the printed sheets are in the form of a scale flow or successive partial scale flows delivered perpendicularly from the top of the stack support (3), and the parts of the separating device (8) comprise separating elements (9) which are associated respectively with the rear end or the front end of two successive stacks (7) and which can be lifted and lowered and which are on insertion of the separating device (8) arranged in their elevated position and retracted into their lowered position with the support elements (10) extended into their elevated position.
2. Device according to Claim 1, characterised in that the separating device is inserted (8) as soon as the forward most printing sheet is at least virtually on the stack support (3).
3. Device according to Claim 2, characterised in that the separating device (8) is transposed for insertion in direction of the stack formation.
4. Device according to one of Claims 1 to 3, characterised in that the section of a separating element (9) which enters into the stack (7) is shorter than the scale gap of two printed sheets.
5. Device according to one of Claims 1 to 4, characterised in that the leading portion (9, 10) of the separating device (8) is designed to be removable from the trailing portion (9, 10).
6. Device according to one of Claims 1 to 5, characterised in that the separating device (8) is designed to be driven from an idling position located in front of the entry end of the stack support (3) along the stack forming section and back.
7. Device according to one of Claims 1 to 6, characterised in that the separating device (8) is driven synchronously with the forming of stacks.
8. Device according to one of Claims 1 to 7, characterised in that a feeding device is provided, which is arranged along the stack support (3) designed for stack forming and which establishes the length of a stack by endsidedly inserted end plates (5), and a downstream pincerlike press (25) is provided, which compresses the stack (7) and which is associated with a strapping device (14), and above the stack support (3), which extends into the operational area of the press (25), is provided a guide arrangement (6) of two support structures (4, 11), which are transposably driven and associated along the stack forming section as feed device of the end plates (5, 12) of the stack (7), and these support structures (4, 11) are designed to be effectively conveying and on the downstream section of the stack support (3), which is intended for strapping, as a press (25) which compresses the stack (7) in the direction of extension.
9. Device according to Claim 8, characterised in that the stack support (3) is at least in the front area of the stack forming section established by belts (45) which are continuously driven in the direction of stack forming.
10. Device according to Claim 8 or 9, characterised in that the support structures (4, 11) are designed to accommodate the end plates (5, 12) which form the ends of a stack (7) stored laterally from the stack forming section in a plate magazine (13).
11. Device according to one of Claims 8 to 10, characterised in that the support structures (4, 11), which are designed as inserting device of the end plates (5, 12), comprise above the top edge of a stack established on stack support (3) pressure plates (15 to 18) which are driven in a transversely transposable manner.
12. Device according to Claim 11, characterised in that the support structures (4, 11) are associated with two pressure plates (15, 16; 17, 18) which are arranged on guide bars (26) and transposable laterally to the stack support (3) by means of a drive element (30).
13. Device according to Claim 12, characterised in that the pressure plates (15 to 18) can be chosen to be mechanical, pneumatic, hydraulic or electrically driven.
14. Device according to Claim 12, characterised in that the pressure plates (15, 16; 17, 18) are attached to the bottom side of a support (21) which is accommodated in the guide arrangement (6).
15. Device according to one of Claims 8 to 14, characterised in that the guide arrangement (6) comprises two guide rails (19, 20), which extend oppositely relative to the direction of stack forming and which accommodate the support structures (4, 11).
16. Device according to Claim 15, characterised in that connected to at least one guide rail (19, 20) is a toothed rod (39) which meshes with a drive pinion (38) of a geared motor (37, 40) which is attached to the support structure (4, 11).
17. Device according to Claim 16, characterised in that on the guide rails (19, 20) is provided a respective toothed rod (39) the associated drive pinions (38) of which are mounted on a common shaft (41).
18. Device according to one of Claims 8 to 17, characterised in that the support structures (4, 11) are designed to be individually drivable in the direction of stack forming.
19. Device according to one of Claims 8 to 18, characterised in that it is designed for single and multiple strapping of a stack (7).

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