DE102006047064B3 - Material stacks e.g. paper stacks, unstacking device, has height adjustable separation device with separation units, where separation device is stretched over width of lifting device and units are formed horizontally to ninety degrees - Google Patents

Abstract

The device has a cutting device (6) formed as a separating caliper that is moved horizontally along a longitudinal side of material stacks (1), where the caliper has a lower side piece (7) and an upper clamping side piece (8) that is moved vertically. A height adjustable separation device (9) with separation units (10) is attached to a transfer area, where the separation device is stretched over width of a lifting device (2). The separation units are formed horizontally to 90 degrees. An independent claim is also included for a method of unstacking of material stacks.

Description

The The invention relates to a device for unstacking layers sheet-like material stacks, consisting essentially of a movable lifting device, on the platform of which to be processed Material stack is stored and with a cut-off for laterally lifting a certain number of sheets from the material stack to achieve a slot-like opening between the lifted Location and the remaining material stack and a transport unit to the transfer the situation are connected to a processing device.

The The invention further relates to a method for unstacking in layers of sheet-like material stacks, in which the material stack in a position is taken in which the number of sheets to be lifted each Location counted or is calculated and the layer to be formed at first partially from the material stack is raised so that a transport device take over the location of the remaining stack and for further processing can.

So far was it usual Manually stacking material stacks into individual layers and, for example, on a vibrator to transport.

Known is also the automated transport of layers of different Number of sheets by means of gripper elements from a stack of material a processing machine, for example on the work surface of a Cutting machine.

By the ever-growing Paper formats, manual handling is fraught with difficulties because either only very small layer heights can be transported or a great effort necessary, which can lead to health problems.

The Separating material stacks into individual layers is also very time consuming and can lead to downtime in the further production process. The Laying layers of the same number of sheets is not or only under large Time and design effort possible. The provision of layers in about the same number of sheets before positioning the sheets within the stack of layers to each other is only on the basis of determining the exact weight the position and / or the layer thickness possible.

Through the publication DE 10 2005 008 595 A1 an apparatus and a method for automatic portioning of sheet material stacks, in particular of paper stacks for lifting individual layers and for automatic transfer into a vibrating unit has become known. The device consists essentially of a movable lifting device, on the platform of which the material stack to be processed is stored, a parting device for lifting a respective layer of the material stack and a transport device for transferring the layer for further processing. The device further comprises measuring, counting and positioning elements for adjusting the number of sheets to be picked up from the material stack per layer. The transport device consists of a one-sided horizontally movable roller-shaped separating element, which is connected to a clamping device between which the raised position is fixed. This makes it possible for a subsequent gripper unit to detect the raised position and deposit, for example, on the vibrating table of a vibrating machine.

adversely at this solution is the big constructive one and cost to realize the automatic layering.

It is therefore an object of the invention, a device of the above so-called type to develop so that the design effort in the automatic layering and the transport of the layers to further processing is reduced, damage to individual leaves of the Material stack in the layer formation reduced or avoided and downtime during subsequent processing of the Layers are reduced.

It is further object of the invention, a method of the above so that the sequence of the procedures optimized and the automatic lifting of layers from a stack of materials can be done with less time.

The inventive task is the device side according to the preamble of claim 1 solved by that the parting device is considered horizontal along one side of the Material stack and vertically movable separating pliers formed is a knife-like lower leg and an upper, vertically movable clamping leg has that in the transfer area the location one over the width of the lifting device reaching, height-adjustable separator with spaced it knife-like separating elements is attached and that the separating elements horizontally by at least Formed pivotable 90 ° are.

With this device according to the invention, individual layers of a specific number of sheets can be lifted from a stack of material in a much simpler way and fed to the processing. The pivotable training and spacing arrangement of the separating elements on the Whole width of the lifting device allows the partial lifting of the position over an entire material stack side by successively pivoting the separating elements in the slot-like opening created by the parting device. The design effort is compared to the solution DE 10 2005 008 595 A1 Significantly reduced by the fact that both mechanical and electronic components can be omitted. At the same time, the quality of the layer formation is improved, since damage to individual leaves is prevented when parting off the layer.

A preferably execution The device provides that electronic and / or mechanical Measuring and / or counting devices and positioning elements for adjusting the material stack to be lifted layer height and / or the exact number of sheets per layer with the parting device are connected.

In order to will the exact layer height and set the number of sheets per layer automatically from the material stack should be deducted.

To a further preferred embodiment of the device according to the invention the knife-like separators are driven in a controlled manner, that they are successively pivoted by 90 ° be that between the position to be lifted and the rest Intervene material stack and that the pivoting back of all separating elements in the initial situation takes place simultaneously.

The cascade-like pivoting of the separating elements of the separating device allows easy lifting of one side of the tapped Location for grasping the situation by a transport unit. During the Transport the situation moves the parting device in the starting position to the rear end of the Material stack back and starts another cut-off. This can save time be reduced because the timing of the transport process not hindered by the parting device.

From Advantage is also when the transport device for gripping, complete removal from the material stack and for transport to a processing facility is designed as a gripper. This results in a quality-appropriate, time-saving, layer-by-layer stripping and transporting of the layers. Other transport elements can omitted.

to Prevention of damage the leaves to be lifted the situation is provided according to the invention, equip the parting device with air nozzles, which blows air between the leaves when lifting the layer.

The inventive task is further procedurally solved in that a parting device laying down the layer height and to form a slot-like opening between the layer and the rest Material stack laterally from the rear material stack end in the Material stack and along a material stack side in the immediate transfer area capable of doing that subsequently knife-like separators of a separator by successively Successful pivoting of each separating element from a starting position at least 90 ° to the longitudinal axis the separator into the formed slot-like opening between the location and the material stack process, so that the location over their entire width of the stack of material is raised and then the Transport device seizes the lifted part of the lay, completely from pulls remaining material stack and supplies the further processing.

In order to becomes a reliable, time-saving automatic process for stripping layers from a stack of materials and for transport to a depositing device, for example, a vibrator or another processing station reached.

Of the Process flow is more economical, if during the feeding the position for further processing the parting device back to the starting position moves and already executes another cut-off.

the method, is further provided and advantageous if the parting device after the pivoting of the separating elements of the separator, the situation stuck. This will also be additional Saved process steps by separate clamping devices would be necessary.

The Parting device is designed as a separating pliers whose upper, vertically movable clamping leg is placed on the position and this jams until the transport unit fixes the position.

In order to also accounts for more clamping elements, the process flow delay could and increase the design effort.

From It is also advantageous if the separating device during transport of the situation fixed the remaining material stack.

The Separating device is designed height adjustable and will be completed before Peel off the layer on the remaining stack of material lowered to to avoid the upper leaves of the material stack are shifted with the location.

Of Further, the process sequence according to the invention provides before, by appropriate control operations of the driven separating elements to ensure, simultaneously return all separating elements to the initial position.

This happens after the transport unit with its with gripper tines equipped lower jaw by the formed by the separating elements crossings through into the slot-like opening Move between the layer and the material stack and the upper jaw has been placed on the deducted position, this jams and the situation completely moves away from the material stack area and further processing supplies.

The Invention will be explained in more detail with reference to an embodiment. The drawing shows in

1 a schematic representation of the device according to the invention with lifting device, parting device, separating device and transport unit,

2 a perspective view of the separating device, in which the separating elements are shown both in the starting position and in the swung-out state,

3.1 - 3.8 schematic representations of the procedure for lifting and transporting a layer of a material stack and

4 a schematic representation of a partially raised and fixed by the parting device position after pivoting of the separating elements.

The embodiment is a large Papiersta pel, for example, consisting of printed sheets with different print contents, illustrate that must be unstacked in layers to the layers 5 align exactly in a vibrating machine and be able to feed a cutting machine, in which the trimming of the sheet is done.

To 1 the device consists of the layered unstacking of sheet material stacks 1 , Essentially from the vertically movable lifting device 2 that a platform 3 having, by means of a drive 4 is formed horizontally movable, on the material stack 1 is stored and can be positioned accordingly.

The device according to the invention further comprises the parting device 6 on, as a separator with a knife-like lower leg 7 and a vertically movable clamping leg 8th is trained. At the lifting device 2 is in the transfer area of the separated location 5 a reaching over its entire width separator 9 arranged, the a plurality of spaced-apart separating elements 10 that is on the frame 11 the separator 9 are rotatably mounted and driven driven. The transfer of the raised position 5 takes place in that the transport unit 12 - Designed in the embodiment as gripper - the raised position 5 grasps, clamps, completely from the material stack 1 pulls and drops on the vibrating table of the vibrating machine (not shown in the drawing).

The cut-off device 6 is in the starting position at the rear end of the material stack 1 horizontally and vertically movable in a rail 13 stored and has an electronic counting device 14 on that with photocells 15 is in operative connection and the exact number of leaves to be lifted per layer 5 determined and the parting device 6 accurately positioned. The cut-off device 6 is equipped with air jets that vent air into the material stack before and during tapping 1 bring in the leaves to separate from each other and to avoid damage when parting.

The lower thigh 7 the parting device 6 is over a rear corner edge of the material stack 1 introduced and moves along the direction of the transfer area leading side of the material stack 1 , There is the clamping leg 8th deposited on the raised part of the layer and clamps this.

The separating elements 10 the separator 9 are in starting position - as in 2 shown - above the frame 11 spaced one behind the other along the longitudinal axis and are controlled so that they successively 90 ° in the material stack 1 can be swung when the parting device 6 has reached the transfer position. This creates the slot-like opening 16 between the raised position 5 and the material stack 1 into which the transport unit designed as gripper tongs 12 intervenes. The lower jaw 17 the transport unit is equipped with spaced gripper tines, passing through the passages 18 between the separating elements 10 through between location 5 and material stacks 1 engage and the upper jaw the raised position 5 fixed. The location 5 gets from the material stack 1 completely lifted, transported over the vibrating table of the vibrating machine and stored there.

The provision of the separating elements 10 in starting position he then follows for all separating elements 10 simultaneously. During the trans portes of the situation 5 for further processing is the parting device 6 in the starting position for re-cutting off a layer 5 moved back.

The 3.1 to 3.8 illustrate the process flow in schematic representations. 3.1 shows the starting position after the material stack 1 by lifting the platform 3 the lifting device 2 has been positioned in a predetermined position. The cut-off device 6 is in the starting position at that of the transport unit 12 turned away end of the material stack 1 , The counting device 14 interacts with two photocells 15 , which determine the exact position of the stack of material stack and the position of the stack top edge, the position in which the lower, knife-like leg 7 the parting device 6 in the material stacking corner pierces the location 5 to build.

3.2 illustrates the lateral process of the lower leg 7 right up to the transfer area of the location 5 to the transport unit 12 or in the sphere of action of the separating device 9 ,

In 3.3 and 4 is shown as the separation tool 6 trained parting device 6 the raised position 5 clamps and a separator 10 already pivoted by 90 °, in the slot-like opening 16 between material stacks 1 and location 5 intervenes.

3.4 illustrates the pivoting of another separator 10 in the slot-like opening 16 ,

In 3.5 are all separating elements 10 pivoted by 90 ° in the slot-like opening 16 proceed and thus lift the situation 5 over their entire width partially from the material stack 1 from. It is also shown that the separating elements 10 now passages 18 form, through which the gripper tines of the lower jaw 17 the transport unit 12 the location 5 under attack.

3.6 schematically shows this process operation.

3.7 illustrates the clamping action of the upper jaw 19 for fixing the position to be transported 5 ,

In 3.8 is the transport of the situation 5 represented, wherein at the same time the parting device 6 moved to the starting position to sting a new situation.

In 4 is the lift-off before transporting the situation 5 shown schematically on the vibrating table in a side view.

1

material stack

2

lifting device

3

platform

4

drive

5

location

6

sticking device, cutting forceps

7

lower leg

8th

clamping leg

9

separating device

10

separators

11

frame

12

Transport unit gripper

13

rail

14

electronic counting

15

photocell

16

slit-like opening

17

lower jaw

18

passage

19

upper jaw

Claims (10)

Device for unstacking layers of sheet-like material stacks, consisting essentially of a movable lifting device, on the platform of the material stack to be processed is stored and with a parting device for laterally lifting a certain number of sheets from the stack of material to achieve a slot-like opening between the position to be lifted and the rest Material stack and a transport unit for transferring the layer to a processing device are connected, characterized in that the parting device ( 6 ) as horizontally along a longitudinal side of the material stack ( 1 ) and vertically movable separating pliers, which has a knife-like lower leg ( 7 ) and an upper, vertically movable clamping leg ( 8th ) that in Überga bebereich the raised position ( 5 ) one over the width of the lifting device ( 2 ) reaching, height-adjustable separation device ( 9 ) with knife-like separating elements arranged at a distance therefrom ( 10 ) and that the separating elements ( 10 ) are formed horizontally at least 90 ° pivotable. Apparatus according to claim 1, characterized in that electronic and / or mechanical measuring and / or counting devices ( 14 ) and positioning elements for adjusting the layer height and / or the material stack ( 1 ) number of sheets per layer ( 5 ) with the parting device ( 6 ) are connected. Apparatus according to claim 1, characterized in that the knife-like Trennelemen te ( 10 ) are driven in such a way that they pivot one after the other in such a way by 90 °, that they between the position to be lifted ( 5 ) and the remaining material stack ( 1 ) and that the pivoting back of all separating elements ( 10 ) takes place simultaneously in the starting position. Device according to claim 1 and at least one of claims 2 or 3, characterized in that the transport unit ( 12 ) for grasping, completely lifting off the material stack ( 1 ) and designed for transport to a processing device as gripper tongs. Device according to claim 1 and at least one of claims 2 to 4, characterized in that the parting device ( 6 ) Has air nozzles which, when lifting the layer ( 5 ) Blowing air into the slot-like opening to be formed. A method for unstacking sheet-like material stacks in layers, in which the material stack is moved to a position in which the number of sheets is counted or calculated each layer to be lifted and the layer to be formed is first partially lifted from the stack of materials, so that a transport unit take over the situation from the material stack and the further processing, characterized in that a parting device ( 6 ) for determining the layer height and for forming a slot-like opening ( 16 ) between the position to be lifted ( 5 ) and the remaining material stack ( 1 ) laterally from the rear material stacking end into the material stack ( 1 ) and along a material stack side into the immediate transfer region of the layer ( 5 ), that subsequently knife-like separating elements ( 10 ) a separating device ( 9 ) by successively pivoting each separating element ( 10 ) from a starting position by at least 90 ° to the longitudinal axis of the separating device ( 9 ) into the slot-like opening ( 16 ) between the situation ( 5 ) and the material stack ( 1 ), so that the situation ( 5 ) over its entire width from the material stack ( 1 ) and then the transport unit ( 12 ) the raised part of the situation ( 5 ), completely from the material stack ( 1 ) and for further processing. Method according to claim 6, characterized in that during the feeding of the layer ( 5 ) for further processing the parting device ( 6 ) moves back to initial position and executes another cut-off. Method according to claims 6 and 7, characterized in that the parting device ( 6 ) after swiveling in the separating elements ( 10 ) of the separating device ( 9 ) the location ( 5 ) is stuck. Method according to claim 6 and at least one of claims 7 or 8, characterized in that the separating device ( 9 ) during the removal of the layer ( 5 ) fixes the material stack. Method according to claim 6 and at least one of claims 7 to 9, characterized in that all separating elements ( 10 ) at the same time swing back to the starting position.