EP1223137A2 - Device for the superposing of sheets in a packet - Google Patents

Abstract

Film stacks (7) on pallets (6) are moved onto storage tables on tiered shelves (29) in a stand (1) and aligned according to visible light and/or laser projected marks. Film stacks (7) on pallets (6) are moved onto storage tables on tiered shelves (29) in a stand (1) and aligned according to visible light and/or laser projected marks. A suction bar (2) on telescopic rails (14) moves horizontally and vertically to take a film (8) from a stack edge and move it onto a transfer unit (3) with suction belts (18) for further movement towards a placing machine (5). Film is lifted from the transfer unit edge by a second vertically moveable suction bar (4), then moved by a carriage (32) on rails to a position above a placing table (20).

Description

The invention relates to a device for folding foils a layer package according to the preamble of claim 1.

Such devices are used in systems such as short cycle coating systems or coating systems with single or multi-day presses, for tempering of carrier boards such as chipboard, fiber or similar wood-based panels used, foils / papers possibly in several layers to laminate panels or on carrier plates, applied on one or both sides to decorative plates be pressed. In these systems with extremely short cycle times in the Pressing is the quick folding of the layer packages (press packages) from of outstanding importance and the most important thing to solve for the technology Problem.

DE 198 39 924 A1 describes a device for removing films from one Film stack in a stacking station and for storing the removed Slides in a gathering station have become known that have a similar Has structure, as described in the preamble of the present application. This The device is characterized in that the transfer platform is on both sides Guide rails with squeegee drives for the over the transfer platform back and forth movable squeegee that the transfer platform with the Guide rails, the squeegee drives and the squeegee one height-swiveling acceptance and transfer unit form and that itself the swivel bearing axis for the acceptance and transfer unit on the side the assembly station.

A device produced with these features is from the time of Lift off until a film is placed in the assembly station for some systems are not fast enough. Another disadvantage is the grinding Transfer the slides over the transfer platform, with which an injury to the Surfaces is not entirely avoidable. It is also disadvantageous that the squeegee over the total length of the transfer platform of approximately 3-4 m Film width must go back and forth.

The invention has for its object to provide a device with of picking up, transferring and depositing a film in less time than with the devices known from the prior art is possible and also to ensure careful and precise alignment when manipulating the To enable foils.

The solution to this problem is characterized by the characterizing part of claim 1
the arrangement of film stacks lying on protective plates or transport pallets with a transport device, such as a forklift, on several levels of a multi-storey shelf, each level being equipped with a storage table on which a transport device projects the film stacks in a longitudinal and transverse direction onto the storage table, visible Turns off light and / or laser markings,
the inclusion of a film from the edge of a film stack with a short-distance, telescopically extendable rails with their own drive, horizontally movable and liftable and lowerable suction bar, the film picked up by suction can be delivered to a transfer device by means of the suction bar, which with its side adjacent to the multi-storey shelf to the appropriate height of the respective floor and film height can be raised and lowered by means of a lifting drive and consists of a base frame in which a transfer table with several continuous vacuum suction belts for the further transport of the films is suspended and through which Transfer of the films from the transfer device by means of a second suction bar for further transport to an adjacent laying station, the suction bar, which can be raised and lowered, each sucking in a film from the edge of the transfer table, lifting it up and moving it in with a carriage Pulls rails of a driving portal over a laying table and places them on it.

Within these measures and features, it is expedient if the storage tables on the floors of the multi-storey shelving are arranged in their longitudinal and transverse axes by means of servomotors and via positioning units automatically after the longitudinal and transverse film edges with the help of permanently installed light sensors or manually in jog mode for visible light - or laser markings can be aligned. Chain conveyors can also be provided for moving the transport pallets onto the storage tables. Instead of the chain conveyor, two-part roller conveyors are also conceivable.
To align the foils during the transfer to the laying table, the transfer table in the base frame can also be designed to be longitudinally and transversely displaceable in a controlled manner by means of light sensors or light barriers or cameras by means of servomotors and positioning units.
As part of the solution according to the invention, the device for further transport of the films from the transfer device to the laying table consists in the fact that the unaligned film can be automatically aligned according to its longitudinal edge above the laying table by a carriage to which the suction bar is attached, via one or two positioning units Position of the travel drive is designed to be traversable and according to its transverse edge in that the suction bar on the carriage is designed to be longitudinally adjustable with a positioning unit.

• Da für das Anheben der Folien vom Folienstapel und das Ablegen der Folien am Legetisch jeweils eine eigene Saugleiste vorgesehen ist, sind kürzere Taktzeiten möglich, weil die erste Saugleiste nur eine Wegstrecke von 300 bis 400 mm vom Folienstapel bis zu den Vakuumsaugbändern zurücklegen muss und nicht die ganze Fahrstrecke über den Übernahmetisch mitfahren muss.
• Die kürzere Taktzeit wird auch dadurch ermöglicht, dass die erste Saugleiste bereits Vorbereitungen zum Anheben der nächsten Folien durchführen kann, wie Zurückfahren zum Folienstapelrand, Absenken der Saugnäpfe auf die Folie und das Unterblasen der abzuhebenden Folie, während die vorlaufende Folie zur zweiten Saugleiste transportiert und damit über den Legetisch gefahren wird.
• Während des Überführens der vorlaufenden Folie über den Übernahmetisch mit den Vakuumsaugbändern zum Legetisch, besitzt die erste Saugleiste einen Zeitüberschuss, der mit mehr Zeit für ein ausreichendes Unterblasen der nächsten abzuhebenden Folie für eine zuverlässige Trennung genutzt werden kann, was sich insbesondere vorteilhaft bei der Handhabung von schwierigen Folien bemerkbar macht.
• Eine kürzere Manipulierzeit ergibt auch das Umschalten der Folienentnahme von den Folienstapeln zwischen den Etagen untereinander, weil die erste Saugleiste nicht die Fahrbewegung der vorlaufenden Folie zum Legetisch mitfahren muss.
• Auch die Höheneinstellung der ersten Saugleiste auf den sich in der Höhe ändernden Folienstapel kann sehr einfach durch den eigenen Stellmotor unabhängig von der Verstellung des Übernahmetisches erfolgen. Dazu ist keine zusätzliche Winkelkorrektur der ersten Saugleiste erforderlich und ein sicheres Aufnehmen der Folien durch eine optimale Positionsanpassung der Saugnäpfe gewährleistet.
• Ein schonender Folientransport ergibt sich dadurch, dass die überführten Folien durch die vorgesehenen Vakuumsaugbänder getragen und nicht über einen Tisch schleifend gezogen werden.
• Ein genaues Manipulieren und Ausrichten der Folien innerhalb der erfindungsgemäßen Vorrichtung, insbesondere beim Ablegen auf dem Legetisch, wird durch die im Mehretagenregal, im Grundrahmen für den Übernahmetisch und für den Fahrwagen der zweiten Saugleiste vorgesehenen Positioniereinheiten mit Stellmotor erreicht.

Compared to the known prior art, the device according to the invention has the following advantages:

• Since a separate suction bar is provided for lifting the films from the film stack and placing the films on the laying table, shorter cycle times are possible because the first suction bar only has to cover a distance of 300 to 400 mm from the film stack to the vacuum suction belts and not that must travel the entire route over the transfer table.
• The shorter cycle time is also made possible by the fact that the first squeegee can already prepare for lifting the next films, such as returning to the edge of the film stack, lowering the suction cups onto the film and blowing the film to be lifted off, while the leading film is transported to the second suction bar and thus is driven over the laying table.
• During the transfer of the leading film over the transfer table with the vacuum suction belts to the laying table, the first suction bar has an excess of time, which can be used with more time for a sufficient blowing of the next film to be lifted off for a reliable separation, which is particularly advantageous when handling difficult films noticeable.
• A shorter manipulation time also results in the switching of the film removal from the film stacks between the levels with one another, because the first suction bar does not have to travel with the movement of the leading film to the laying table.
• The height of the first squeegee on the stack of films, which changes in height, can also be adjusted very easily using its own servomotor, regardless of the adjustment of the transfer table. No additional angle correction of the first suction bar is required for this, and a secure pick-up of the foils is guaranteed by an optimal adjustment of the position of the suction cups.
• Gentle film transport results from the fact that the transferred films are carried by the vacuum suction belts provided and are not dragged over a table.
• Precise manipulation and alignment of the foils within the device according to the invention, in particular when placing them on the laying table, is achieved by means of the positioning units with servomotors provided in the multi-storey shelf, in the base frame for the transfer table and for the carriage of the second suction bar.

Further advantageous measures and refinements of the subject of Invention emerge from the subclaims and the following description with the drawing.

Figur 1

Die Vorrichtung gemäß der Erfindung in Seitenansicht und

Figur 2

die Vorrichtung nach Figur 1 im Grundriss.

Show it:

Figure 1

The device according to the invention in side view and

Figure 2

the device of Figure 1 in plan.

The drawing in FIGS. 1 and 2 shows the device for separating, aligning, combining and transporting coating materials in sheet form. Decorative papers (Japanese papers), melamine-resin-soaked papers, phenol-resin-soaked papers, veneers, PVC foils or laminates, hereinafter referred to as foils 8, can be used as coating materials. MDF, chipboard, OSB or plywood boards (not shown) can be folded together in the laying station 5 with the foils 8 on one or both sides as carrier boards. The main parts of the device consist of a multi-level shelf 1, a suction bar 2 for separating the foils 8, a transfer device 3, a second suction bar 4 and the laying station 5. The multi-level shelf 1 is based on a frame 9, the laying table on a frame 13 and the laying station 5 on the frame 26. The loading of the levels 29 of the multi-level shelf 1 can be done with a forklift 28 or another suitable transport device. For this purpose, each level 29 of the multi-level shelf 1 is preferably equipped with a storage table 10, on which the film stacks 7 are placed with a forklift 28. The film stacks 7 lie on protective plates or transport pallets 6. The film stacks 7 are placed on the storage table 10, preferably by a forklift 28 in the longitudinal and transverse directions for visible light crosses, light points or laser light lines, or by a motor drive with servomotors 15 of the sliding storage table 10 aligned by means of two motors on the longitudinal axis and one motor on the transverse axis. This makes it possible to align the film longitudinal edge a and film transverse edge b of the film stack 7 automatically with the aid of permanently installed light scanners or manually in jog mode according to visible light crosses, light points or laser light lines.
The loading of the multi-level shelf 1 can also be carried out with another transport device such as a conveyor belt or the like, each level 29 of the multi-level shelf 1 being equipped with a roller or chain conveyor on which the film stacks 7 are transferred with the transportation device. The film stack 7 are also on protective plates or transport pallets 6. The film stack 7 can be aligned by two-part roller and chain conveyors. By automatically aligning the film's longitudinal edge a with the help of permanently installed light scanners or manually in jog mode according to visible light crosses, light points or laser light lines, or by chain conveyors that are built on sliding platforms.
This makes it possible to automatically align the film longitudinal edge a and film transverse edge b by means of two servomotors on the longitudinal axis XX and a servomotor 15 on the transverse axis with the aid of permanently installed light scanners or manually in jog mode according to visible light crosses, light points or laser light lines. With 27 the working direction of the device is indicated.
The separation of the foils 8 from a stack of foils 7 provided and pre-arranged in the multi-level shelf 1 takes place by means of a lifting and lowering as well as horizontally movable suction bar 2. The suction bar 2 is for this purpose mounted between multi-level shelf 1 and the transfer device 3 on a guide column 35 and in a travel rail 14 , It can be moved vertically and horizontally by motor or pneumatically, with the travel rail 14 also being telescopically extendable in both directions in order to travel both over the edge of the film stack 7 or over the start of the transfer device 3 and to be vertically movable on the guide column 35 , With the help of a travel drive (not shown), the suction bar 2 is moved over the edge of the film stack. Then it is lowered on the film stack 7. A series of suction cups 11 are attached to the suction bar 2 and are evacuated via a vacuum generator, for example a vacuum pump, blower or suction nozzles according to the Venturi principle, and thus suck in a film 8. The uppermost film 8 is lifted off the stack during the subsequent upward stroke. In order to properly separate the film 8, air is blown along the longitudinal edge between the raised film 8 and the films remaining on the film stack 7. For this purpose, the blowing nozzles are preferably mounted on the suction bar 2. If the film 8 is detached from the film stack 7 in this way, it is drawn across the edge of the transfer device 3 and transferred to the transfer table 3 of the transfer device 3 by venting the vacuum system.
In order to ensure uninterrupted production or to separate films 8 alternately from two transport pallets 6 from the multi-storey shelf 1, the suction bar 2 can preferably be pivoted by a lifting drive on the guide column of the transfer device 3 or an additional motorized or pneumatic lifting movement to the height position of the corresponding floor 29 are brought.

The transfer device 3 consists of a base frame 16 which Lift actuators 12 can be raised and lowered on one or both sides. Thereby the front frame of the base frame can be adjusted to the transfer height of the Suction bar 2 and / or adapted to the transfer height of the suction bar 4 become. In the base frame 16 of the transfer device 3 is a Transfer table 17 with a table surface of the removal position in height and Angle of the squeegee 2 and the delivery position in height and angle of Squeegee 4 can be adjusted with the aid of the take-off angle adjustment 21. On the The table surface of the transfer table 17 runs a plurality of vacuum suction belts 18, provided with holes 31 for the purpose of sucking in the film 8 to be transferred are. To transport the film 8 are in under the conveyor belts suitably arranged suction boxes (not shown) which over Vacuum generator are evacuated. The film 8 is by means of the Transfer table 17 circumferentially guided vacuum suction belts 18 from the Suction bar 2 with automatic alignment of the film 8 to the suction bar 4 for the purpose Handover transported. The film 8 is aligned by in the base frame 16 light scanners, light barriers or cameras and three using servomotors 19 motor-driven positioning units 24 are installed. The slide 8 will aligned on their longitudinal and transverse edges a and b by the Transfer table 17 in the base frame 16 by the three motor driven positioning units 24 is moved longitudinally and transversely. The Position of the film 8, the film edges a and b, the alignment marks or The position of the decor print is determined by the light sensors, light barriers or Cameras recognized and reported to the control. The control regulates or controls the three motorized positioning units lengthways and crossways, that the film 8 in the angular, decorative, and edge direction or after Cut marks can be passed to the suction bar 4 aligned. The film 8 can also be used without alignment to the suction bar 4 Handover to the laying table 20 if they are transported during the Placing in the laying station 5 is aligned. The shape of the Transfer device 3 is selected so that the height adjustment to the suction bar 2 and / or suction bar 4 resulting twist angle to the 90 ° position of the suction cups 11 and 23 of the suction strips 2 or 4 compensated becomes.

To take over a film 8 from the transfer table 17 for transport to Laying station 5 and for laying on the laying table 20 is the second suction bar 4 motorized on a driving portal 25 and motorized or pneumatically vertically movable. With the help of the drive 22 Suction strip 4 moved over the film 8 to the edge of the transfer table 17 and then lowered onto the film 8. As with the first squeegee 2 the film 8 is sucked in by vacuum generators and suction cups 23 and raised. At this time, the suction boxes in the base frame 16 ventilated and thus release the film 8 for further transport. The squeegee 4 pulls the film 8 with automatic alignment on the laying station 5 and sets them here on the laying table 20. For this purpose, the suction bar 4 lowers on the Lay table 20 off, the vacuum system is ventilated and the suction bar 4 lifts back up to the starting position. If the delivery is not aligned the film 8, is aligned with the longitudinal edge a by the suction bar 4th via one or two positioning units 24 for the longitudinal edge a to the Position of the drive 22 is moved. The positioning units 24 for the alignment of the longitudinal edge a are on a carriage 32, which is traversed by the drive 22 attached. The film edge b is aligned by the suction bar 4 on the trolley 32 with a Positioning unit 24 is moved longitudinally. The position of a film edge a or b is by light sensors, light barriers or cameras, which are stationary or are arranged traveling, recognized and reported to the control. The The controller regulates or controls the motor-driven positioning units 24 lengthways and crossways so that the film 8 has the correct edges in the laying station 5 the laying table 20 can be handed over. Is used by sensors (not shown) recognized that the film 8 is already correctly edged to the second Suction strip 4 has been transferred, there is no further alignment of the film 8 on the way to the laying station 5. For this purpose, the suction bar 2 lowers on the Laying station 5 off, the vacuum system is ventilated, the film 8 lies down on the laying table 20 and the suction bar 2 rises up into the Starting position back.

LIST OF REFERENCE NUMBERS

1.

Multi-floor shelf

Second

squeegee

Third

Transfer device

4th

squeegee

5th

laying station

6th

pallet

7th

film stack

8th.

films

9th

Frame for multi-level shelf 1

10th

Storage table for transport pallet 6

11th

Suction cups on suction bar 2

12th

Lift drive for transfer device 3

13th

Frame for laying table 20

14th

Track for suction bar 2

15th

Servomotors on multi-level shelf 1

16th

base frame

17th

transfer table

18th

Vakuumsaugbänder

19th

Servomotors on transfer device 3

20th

Legetisch

21st

Take-off angle adjustment for transfer device 3

22nd

Travel drive for trolley 32

23rd

Suction cups for squeegee 4

24th

Positioning units for deposit table 10, transfer table 17, suction bar 4

25th

Driving portal for trolleys 32

26th

frame

27th

working direction

28th

Transport device (forklift)

29th

Floors

30th 31st

drilling

32nd

trolley

33rd 34th 35th

Guide pillar for track 14

a, b

film edge

X X

longitudinal axis

Y-Y

transverse axis

Claims (8)

An apparatus for folding of sheets to a sheet package in a laying station, comprising a multi-floor shelf for the stack of sheets and means for withdrawing the film from the film stacks and transferring to the laying station and transport devices for introducing the stack of sheets in the multi-floor shelf, characterized by 1.1 the arrangement of film stacks (7) lying on protective plates or transport pallets (6) with a transport device, such as a forklift (28), into several floors (29) of a multi-storey shelf (1), each floor (29) with a storage table ( 10) is equipped on which the transport device / forklift (28) places the film stacks (7) in the longitudinal and transverse directions aligned with visible light and / or laser markings projected onto the storage table (10), 1.2 the inclusion of a film (8) from the edge of a film stack (7 or 7 ') with a short distance telescopically extendable rails (14) with its own drive horizontally movable as well as lifting and lowering squeegee (2), the through Suction of each film (8) taken up can be delivered to a transfer device (3) by means of the suction bar (2), the side of which is adjacent to the multi-storey shelf (1) to the corresponding height of the respective floor (29) and film height by means of a lifting drive (12) is raised and lowered and consists of a base frame (16), in which a transfer table (17) with several circumferentially guided endless vacuum suction belts (18) for the further transport of the films (8) is suspended and 1.3 by taking over the films (8) from the transfer device (3) by means of a second suction bar (4) for further transport to an adjacent laying station (5), the suction bar (4), which can be raised and lowered, each having a film (8) from Sucks in the edge of the transfer table (17), lifts it up and pulls it with a carriage (32) in rails of a travel portal (25) over a laying table (20) and deposits it thereon. Apparatus according to claim 1, characterized in that the storage tables (10) in the floors (29) in their longitudinal and transverse axes (XX, YY) are slidably arranged. Device according to claims 1 and 2, characterized in that chain conveyors for pulling in the transport pallets (6) are arranged on the storage tables (10). Apparatus according to claim 1, characterized in that the floors (29) for taking over and storing the transport pallets (6) are equipped with two-part roller or chain conveyors, the film longitudinal edges (a) and the film transverse edges (b) automatically using permanently installed light sensors or can be adjusted manually in jog mode according to visible light or laser markings. Device according to claims 1, 2 and 3, characterized in that the displaceable storage tables (10) automatically by means of two positioning motors (15) on the longitudinal axis (XX) and a positioning motor (15) on the transverse axis (YY) via positioning units (24) can be aligned according to the longitudinal and transverse film edges (a, b) using permanently installed light scanners or manually in jog mode according to visible light or laser markings. Device according to claims 6 and one or more of claims 2 to 5, characterized in that the film (8) resting on the transfer table (17) can be aligned longitudinally and transversely with the transfer table (17) in the base frame (16). Apparatus according to claim 6, characterized in that the transfer table (17) in the base frame (16) by means of light sensors or light barriers or cameras by means of servomotors (19) and positioning units (24) can be moved longitudinally and transversely. Device according to claims 1 and one or more of claims 2 to 7, characterized in that the unaligned or longitudinally and transversely oriented film (8) can be automatically aligned according to its longitudinal edge (a) above the laying table (20) by a carriage ( 32) to which the suction bar (4) is fastened, is designed to be traversable via one or two positioning units (24) to the position of the travel drive (22) and according to its transverse edge (b) by the suction bar (4) on the carriage (32) a positioning unit (24) is longitudinally adjustable.

Images