EP2253569A2 - Transfer of stacks of paper - Google Patents

Abstract

The conveyor (30) has clamping devices (15a, 15b), which are diametrically arranged together in a paired manner. The conveyor is moved in a straight-line after accommodation of paper stacks (50a, 50b). The conveyor is moved to a receiver station (E) by a linear drive i.e. linkage drive (25), after rotation of the conveyor around a predetermined angle of 180 degree, so that the paper stacks conveyed by the conveyor are supplied to the receiving station after translatory motion of the conveyor. A bent guiding device (20) is provided for the paper stacks. An independent claim is also included for a method for transferring paper stacks.

Description

description

The invention relates to a device for transferring stacks of paper from a delivery station for delivering at least one stack of paper to a receiving station for receiving at least one stack of paper and a device for transferring stacks of paper with a discharge station for dispensing stacks of paper and with a receiving station for receiving stacks of paper. Furthermore, the invention relates to a method for transferring stacks of paper from a dispensing station for dispensing at least one stack of paper to a receiving station for receiving at least one stack of paper.

It is known in the state of the art that paper sheet stacks are produced in multiple lanes from at least one wide paper web. The wide paper webs are each unrolled from a roll and processed in successive operations by slitting and cross-cutting into sheets that successively in several tracks next to each other or conveyed in a scaly stream to a collection station in which the sheets of each row are respectively accumulated into adjacent stacks. With a transfer agent or transfer means, the stacks are removed from the collection station or delivery station and transferred to one or more feed conveyors, which transfer them to a further machine or device for further processing.

For example, in EP-B-0 514 783 discloses a device for conveying paper sheet stacks.

In addition, in DE-B-10 2004 030 254 a rotary feeder for conveying inserts described. Further disclosed DE-B-103 09 096 a device for transporting a substantially arcuate element in a printing machine.

Based on this prior art, the object of the present invention is to provide a simple and secure transfer of stacks of paper from a collection station to a receiving station, it should be possible to easily achieve a high transfer performance.

This object is achieved by a device for transferring stacks of paper from a delivery station for delivering at least one stack of paper to a receiving station for receiving at least one stack of paper, which is further developed in that the device is designed as a rotary conveyor for receiving at least one stack of paper such that after receiving at least one stack of paper at the receiving station of the rotary conveyor is translational, in particular linear, or from the receiving station translationally, in particular linear, movable away or is moved and after rotation of the rotary conveyor with the stack of paper by a predetermined angle, preferably by 180 °, the rotary conveyor is translatable, in particular linear, is movable or moved to the receiving station, so that after the translational movement of the rotary conveyor of the conveyed by the rotary conveyor paper stack of the receiving station is or is delivered.

The invention is based on the idea that for transferring paper stacks such as e.g. Clips, sheets stacks and / or book blocks from a stack tray or collection station or delivery station, the paper stack by means of the rotary conveyor linear, preferably horizontal, are pulled out, so that after detecting and pulling out a paper stack of paper stack by means of the rotary conveyor to the, in particular horizontally oriented, rotation axis of Rotary conveyor is rotated. In this case, the paper stack reaches a storage surface, so that using the rotary conveyor and a linear, preferably horizontal, movement of the rotary conveyor, the rotated paper stack in the receiving station, e.g. a removal facility. The translational movements of the rotary conveyor take place transversely, in particular perpendicular to the axis of rotation of the rotary conveyor, wherein a preferred movement of the rotary conveyor takes place in a horizontal plane.

If in the present context for the sake of simplicity of paper sheets or paper sheet stacking is mentioned, the invention is not limited to sheets or stacks of paper. Rather, the invention also includes sheets and stacks of other materials such as cardboard, cardboard, plastic and the like.

For the transfer of the paper stack from or from the delivery station to the receiving station is further provided that the dispensing station and the receiving station are spaced apart at a predetermined horizontal and vertical distance so that the rotary conveyor can perform both translational and rotational movements according to a predetermined selection and combination.

After delivery of the or at least one stack of paper at the receiving station, the rotary conveyor is moved back again, preferably linearly, from the receiving station, so that following or during the return movement of the rotary conveyors a rotation is preferably performed by 180 °, so that the receiving point on the rotary conveyor again ready for picking up a stack of paper at the delivery station. For this purpose, the rotary conveyor is moved, for example, in an open clamping device to the dispensing station or in the collecting station, so that the clamping device can detect a stack of paper in the collecting station.

After delivery of the paper stack and after rotation of the rotary conveyor by a predetermined angle, preferably by 180 °, the rotary conveyor is translationally, in particular linear, moved to the discharge station, so that the rotary conveyor is approached to the discharge station to another paper stack at the discharge station or the collecting station to seize. In this case, in particular during the transfer of one or more stacks of paper from the delivery station to the receiving station one or more paper stacks are provided at the delivery station, for example, a shingled stream of paper layers is conveyed to the delivery station and introduced there, so that due to a clocked operation of the rotary conveyor a predetermined amount provided on paper sheets or paper sheets as a stack in the delivery station.

Moreover, it is possible within the scope of the invention for the stacks to be subsequently removed from the receiving station at the receiving station after delivery of one or more stacks of paper.

In addition, it is provided in a development of the device that the translational, in particular linear or horizontal, movements of the rotary conveyor are reversible, so that this results in simple movements that are executed or provided with a simple design effort. In particular, the rotary conveyor is moved back and forth between the vertically and horizontally offset dispensing and receiving stations, preferably horizontally.

In addition, a preferred embodiment of the device is characterized in that the rotary conveyor has one or more clamping devices, so that the paper stacks are or are held for transfer from the delivery station to the receiving station on or on or from the rotary conveyor.

In the context of the invention, it is possible that by means of the rotary conveyor a plurality of juxtaposed paper stacks are transferred to the delivery station at the same time to a receiving station, for example, one or more clamping devices detect and clamp a paper stack at the delivery station.

Furthermore, it is advantageous if the rotary conveyor on the circumference two diametrically opposite, preferably in pairs, arranged clamping devices, so that thereby the transfer performance of the rotary conveyor is doubled since, for example, a paper stack is detected at the top of the rotary conveyor by a first clamping device at the discharge station and a rotated paper stack is held by a second diametrically arranged lower clamping device, eg pliers or the like, on the underside of the rotary conveyor, so that in a linear movement of the rotary conveyor of the upper stack of paper is pulled out of the delivery station, while the lower stack of paper is delivered to the receiving station simultaneously.

As soon as the lower stack of paper is introduced in the receiving station, the clamping device is released at the lower paper stack, so that subsequently the rotary conveyor performs a rotation through 180 °, at the same time or subsequently the rotary conveyor is moved back horizontally. As a result, the initially lower clamping device is rotated upward, so that the now upper clamping device is introduced into the discharge station by the return movement of the rotary conveyor or the pliers drum to detect a stack of paper.

For this purpose, it is provided in a preferred embodiment that the diametrically arranged on the rotary conveyor clamping devices are operated in opposite directions or operated.

In addition, the device is characterized in that the rotary conveyor is rotatable between the translational movements or is rotated or is rotatable or rotated.

For this purpose, it is further provided that the rotary conveyor before or after the rotation about an axis of rotation, preferably by means of a linear drive, in the same translational direction, preferably horizontally, is movable or moved.

In a further development, it is additionally provided that during the rotation about an axis of rotation, preferably by means of a linear drive, the rotary conveyor is translationally movable or moved. For example, the rotary conveyor or the rotary conveyor designed as a pliers drum is simultaneously moved away from the receiving station and rotated so that the paper stack removed at the delivery station is transferred to the storage surface on which the transferred paper stack is introduced into the receiving station.

A simplified handling of the paper stacks during the transfer from the delivery station to the receiving station results from the fact that a, preferably curved, guide device is provided for the paper stack conveyed by the rotary body. For example, the guide device is designed, for example, in the form of a flap, so that detection of a paper stack at the delivery station of the paper stack is pulled horizontally out of the delivery station until the clamping device at the top of the rotary conveyor is brought into the region or the vicinity of the flap, then subsequently is promoted along the inner wall of the flipper flap under rotation of the rotary conveyor designed as a pliers drum, the paper stack, resulting in a gentle treatment in the storage on the lower receiving station. As a result, during the rotation of the rotary conveyor, the paper stack is guided to form a curvature in the paper stack in a manner defined by a circular arc or arc.

In addition, the device is characterized by the fact that a servo motor is provided as a rotary drive for the rotary conveyor. By means of the servo motor is a high clock rate of the rotary conveyor ensured along with a high positioning accuracy.

Preferably, a linear drive is provided for the translational movement of the rotary conveyor, wherein in particular the linear drive is designed as a linkage or has a linkage. In one embodiment, not shown, may be provided as linear drive and a servo motor together with linear guide or a linear motor.

Furthermore, a coordinated and / or simultaneous predetermined sequence of movements of the rotary and the translational movement of the rotary conveyor is provided in a development by means of a higher-level control or regulation, wherein preferably the rotary conveyor follows a law of motion, which in terms of starting point, characteristics and amount of angular acceleration and / or deceleration and / or phases of constant rotational speed to the law of motion of the translational movement is adaptable or adapted, so that a particularly gentle product treatment is achieved or achieved.

In addition, in one embodiment, the clamping devices on at least one mechanical drive, which is derived from the rotation of the rotary conveyor. As a result, in particular rotating unions for example, an electrical and / or pneumatic power supply in the case of appropriately driven clamping devices are avoided.

Furthermore, the object is achieved by a device or an arrangement for transferring stacks of paper with a delivery station for dispensing at least one stack of paper and at least a receiving station for receiving at least one, preferably transferred from the discharge station, paper stack, wherein a device for transferring stacks of paper from the delivery station to the receiving station is provided, wherein the device is formed as described above. To avoid repetition, reference is expressly made to the above statements.

In addition, the object is achieved by a method for transferring stacks of paper from a delivery station for delivering at least one stack of paper to a receiving station for receiving at least one stack of paper using a device described above for transferring stacks of paper from a delivery station to a receiving station. Here, the device for transferring stacks of paper is carried out as described above, so that expressly referred to the above-described details of the device.

Further features of the invention will become apparent from the description of embodiments according to the invention together with the claims and the accompanying drawings. Embodiments of the invention may satisfy individual features or a combination of several features.

Fig. 1

schematisch eine Seitenansicht einer Zangentrommel im eingefahrenen Zustand in einer Sammelstation;

Fig. 2

schematisch eine Seitenansicht der Zangentrommel mit einem teilweise aus der Sammelstation herausgezoge- nen Papierstapel;

Fig. 3

schematisch eine Seitenansicht der Zangentrommel mit herausgezogenem und teilweise gedrehtem Papiersta- pel;

Fig. 4

schematisch eine Vorderansicht der Zangentrommel und

Fig. 5

schematisch eine Draufsicht auf die Zangentrommel im eingefahrenen Zustand in einer Sammelstation.

Below, the invention will be described by way of example with reference to embodiments without limitation of the general inventive idea, with respect to all in the text unspecified details of the invention is expressly made to the figures. Show it:

Fig. 1

schematically a side view of a pliers drum in the retracted state in a collecting station;

Fig. 2

1 is a schematic side view of the pliers drum with a paper stack partially withdrawn from the collecting station;

Fig. 3

schematically a side view of the pliers drum with pulled out and partially rotated Papiersta- pel;

Fig. 4

schematically a front view of the pliers drum and

Fig. 5

schematically a plan view of the pliers drum in the retracted state in a collecting station.

In the following figures, identical or similar elements or corresponding parts are provided with the same reference numerals, so that a corresponding renewed idea is dispensed with.

In the Fig. 1 to 3 different working positions of a pliers drum 30 between a collection station designed as a collection station A and a receiving station E for paper stacks are shown in each case schematic side views.

The pliers drum 30 has on its circumference at two diametrically opposite points of the pliers drum 30 via pliers 15a, 15b, which are formed in pairs on the pliers drum 30. For the transport of a stack of paper, one or more pliers 15a, 15b may be arranged on one side of the pliers drum 30 side by side in a row-like manner.

The side is on both sides of the pliers drum 30 (see. Fig. 5 ) arranged in each case a linkage 25, so that the pliers drum 30 can perform a linear guided horizontal movement between the collecting station A and the receiving station E. Between the joint gears 25, the rotation axis 32 of the pliers drum 30 is rotatably mounted, so that the pliers drum 30 can perform rotational movements.

In the collecting station A are in accordance with the in Fig. 1 shown side view several sheets of paper in a shingled paper stream 5 promoted to the collection station A, in which the sheets are accumulated to a stack of superimposed flat parts or paper sheets. When processing a wide paper web by longitudinal cutting and cross cutting operations to paper sheets, the individual sheets of paper are conveyed in a plurality of webs side by side in the collection station A, where the sheets of each row are respectively accumulated to adjacent stacks.

At the in Fig. 1 shown working position of the pliers drum 30 is present in the collecting station A paper stack 50a with the one or more top pliers 15a from the collecting station A below the shingled paper stream 5 pulled out (arrow V). In this case, a separating finger 10 holds back the incoming paper sheets of the scaly stream 5 during extraction of the paper stack 50a. The linear withdrawal of the paper stack 50a (arrow V) via the linkage 25, so that the paper stack 50 is pulled out via a horizontal movement of the pliers drum 30 from the collection station A. In this case, the paper stack 50a is partially pulled out of the collecting station A. This working position is in Fig. 2 shown schematically.

While at the in Fig. 1 illustrated working position of the pliers or pliers 15a for detecting a paper stack 50a at the collecting station A, a second paper stack 50b is arranged on a support table 60 of the receiving station E on the underside of the pliers drum 30. Here, in a previous operation, the paper stack 50b has been transferred from the pliers drum 30 from the collecting station A to the receiving station E. In this case, the paper stack 50b was brought to rest on the delivery table 60 by opening a flap 20 from the position shown in dashed lines.

In Fig. 2 is schematically shown in the side view of the working position, in which the top paper stack 50a, which is detected by the pliers or the pliers 15a, partially pulled out of the discharge station A and conveyed to the flap 70. At the same time, the paper stack 50b is placed on the horizontal delivery table 60 in the receiving station E on the underside of the pliers drum 30 so that subsequently the paper stacks 50b delivered to the receiving station E are detected by a removal device 35 and removed from the receiving station E.

By the horizontal movement of the pliers drum 30 and the detected paper stacks 50a, 50b, the top paper stack 50a is pulled out of the discharge station A, while the bottom paper stack 50b is delivered to the receiving station E. This is done by a linear horizontal movement of the pliers drum 30 (see. Fig. 1 , Arrow V), during which the pliers drum 30 is not rotated.

After complete insertion of the lower-side paper stack 50b into the receiving station E, the lower-side pliers 15b are released, so that subsequently the pliers drum 30 is in rotation is offset. Fig. 2 schematically shows the working position of the pliers drum 30 after a first linear movement and before performing (arrow R) of the rotation about the rotation axis 32nd

By the subsequent rotation of the pliers drum 30, the upper paper stack 50a is completely pulled out of the discharge station A. This is schematically in Fig. 3 shown in a side view.

For guiding the paper stacks 50a, a camber flap 20 is arranged on the pliers drum 30 so that the paper peg 50a or pegs 50a pulled out are arched through the camber flap 20. In this case, the curving flap 20 serves to guide the paper stacks 50a during the rotational movement of the pliers drum 30. Furthermore, the paper layers of the paper stack 50a are held by the flap 20, until the previously extended paper layers are transported to or in the receiving station E from there.

After completion of the rotation by 180 ° of the pliers drum 30, the flap 20 is pivoted or controlled (see. Fig. 1 , Arrow W), so that the rotated paper layers stretched on the support table 60 rest. This is Fig. 1 for the drawn paper stack 50b shown accordingly. During the rotational movement (arrow R) of the pliers drum 30 about the horizontally oriented rotation axis 32, the forceps 15b initially positioned on the underside (cf. Fig. 1 . 2 ) turned upwards.

After rotation of the pliers drum 30 by 180 °, so that now the pliers or pliers 15b are arranged at the top of the pliers drum 30, the pliers drum 30 is moved horizontally to the discharge station A (see. Fig. 3 , Arrow Z), so that the Grab pliers 15b at the top into a next stack of paper plies in collecting station A formed using separating finger 10 and / or retainer 12 at collecting station A during withdrawal of a paper stack from collecting station A.

In addition, during rotation of the pliers drum 30 after complete withdrawal of the detected paper stack 50a from the collecting station A, the pliers drum 30 of the receiving station E horizontally opposite to the conveying direction (arrow Z) for pulling the conveyor stack from the collecting station A (see. Fig. 1 ) moved back. This is in Fig. 3 indicated schematically.

By the pliers drum 30 according to the invention and a predetermined curve and the linear reciprocating movement of the pliers drum 30 between the collecting station A and the receiving station E according to a horizontal travel previously drawn-out paper layers are inserted into the receiving station E, at the same time the upper next paper layers from the Collection station A are pulled out. As a result, both short transfer paths and a high extraction capacity of paper stacks from the collection station A can be achieved.

In Fig. 4 is a front view of the pliers drum 30 is shown schematically, wherein a plurality of paper stacks 50a are transferred from the collecting station A in the receiving station E by means of the pliers drum 30 in a multi-lane manner. For rotation of the pliers drum 30, a servomotor 45 is arranged laterally on a lifting arm of a joint transmission 25, so that a superimposed and at the same time position-precise rotational movement of the pliers drum 30 is carried out.

In the context of the invention, it is possible that the servomotor 45 is fixedly arranged, preferably on a main frame, wherein the servomotor by means of a propeller shaft and a flange, e.g. Rotary flange, connected to the lever arm.

It is also in Fig. 4 recognizable that two juxtaposed pliers 15a are provided for the transport of a paper stack 50a, which engage in the recesses 11 of the separating fingers 10 on the underside of the separating fingers 10 to take the paper stacks 50a in the collecting station A.

In the Fig. 4 illustrated front view corresponds to the in Fig. 1 shown working position of the pliers drum 30 with omission of the flap 20 (see. Fig. 1 ).

In addition, shows Fig. 5 in the plan view of the pliers drum 30 in the retracted state in the collecting station A, that the pliers 15 a of the pliers drum 30 between the recesses 11 of the separating fingers 10 reach through to detect a paper stack below the retained paper by the separating finger 10 layers.

Furthermore, in Fig. 5 It can be seen that the paper stacks 50b delivered to the receiving station E are detected by the removal devices 35 at the receiving station E and transversely or perpendicularly, as the double arrow Q shows, are transported away from the receiving station E to the previous conveying direction of the paper stacks.

All mentioned features, including the drawings alone to be taken as well as individual features that are disclosed in combination with other features are considered alone and in combination as essential to the invention. Embodiments of the invention may be by single features or a combination be met several characteristics.

LIST OF REFERENCE NUMBERS

5

scaly paper stream

10

separating finger

11

recess

15a, 15b

tongs

20

Flap

25

linkage

30

pliers drum

32

axis of rotation

35

removal device

45

servomotor

50a, 50b

stack of paper

60

tray table

A

collection station

e

receiving station

Claims (15)

Apparatus (25, 30) for transferring stacks of paper (50a, 50b) from a dispensing station (A) for dispensing at least one stack of paper (50a, 50b) to a receiving station (E) for receiving at least one stack of paper (50a, 50b); characterized in that the device (25, 30) as a rotary conveyor (30) for receiving at least one paper stack (50a, 50b) is formed such that after receiving at least one paper stack (50a, 50b) at the receiving station (A) of Rotary conveyor (30) translationally, in particular linear, is movable or is moved and after rotation of the rotary conveyor (30) by a predetermined angle, preferably by 180 °, the rotary conveyor (30) translationally, in particular linear, to the receiving station (E) movable is or is moved, so that after the translational movement of the rotary conveyor (30) of the rotary conveyor (30) funded by the paper stack (50 a, 50 b) of the receiving station (E) is delivered or becomes. Apparatus (25, 30) according to claim 1, characterized in that after delivery of at least one stack of paper (50a, 50b) at the receiving station (E) of the rotary conveyor (30) of the receiving station (E) is translationally, in particular linear, movable or is moved and after rotation of the rotary conveyor (30) by a predetermined angle, preferably by 180 °, the rotary conveyor (30) translationally, in particular linear, to the discharge station (A) is movable or moved. Device (25, 30) according to claim 1 or 2, characterized in that the translational movements of the rotary conveyor (30) are reversible. Device (25, 30) according to one of claims 1 to 3, characterized in that the rotary conveyor (30) has one or more clamping devices (15a, 15b), so that the paper stacks (50a, 50b) for the transfer from the delivery station (50). A) are held to the receiving station (E) on the rotary conveyor (30) or are. Device (25, 30) according to one of claims 1 to 4, characterized in that the rotary conveyor (30) on the circumference has two diametrically opposite, preferably in pairs, arranged clamping devices (15a, 15b). Device (25, 30) according to claim 5, characterized in that the diametrically arranged clamping devices (15a, 15b) are operated or operated in opposite directions. Device (25, 30) according to one of claims 1 to 6, characterized in that the rotary conveyor (30) is rotatable or is rotated between the translational movements. Apparatus (25, 30) according to any one of claims 1 to 7, characterized in that the rotary conveyor (30) before and after the rotation about the rotation axis (32), preferably by means of a linear drive (25), in the same translational direction is movable or is moved. Apparatus (25, 30) according to any one of claims 1 to 8, characterized in that the rotary conveyor (30) during the rotation about an axis of rotation (32), preferably by means of a linear drive (25), is translationally movable or moved. Device (25, 30) according to any one of claims 1 to 9, characterized in that a, preferably curved, guide device (20) is provided for the paper stack (50a, 50b) conveyed by the rotary conveyor (30). Device (25, 30) according to one of claims 1 to 10, characterized in that a servomotor (45) is provided as the rotary drive (45) for the rotary conveyor (30). Device (25, 30) according to claim 8 or 9, characterized in that the linear drive (25) as a linkage (25) or is formed or a linkage (25). Device (25, 30) according to one of claims 4 to 6, characterized in that the clamping devices (15a, 15b) have at least one mechanical drive derived from the rotation of the rotary conveyor (30). Device for transferring stacks of paper (50a, 50b) to a delivery station (A) for delivering at least one stack of paper (50a, 50b) and to a receiving station (E) for receiving at least one stack of paper (50a, 50b), 25, 30) is provided for transferring stacks of paper (50a, 50b) from the delivery station (A) to the receiving station (E), characterized in that the device (25, 30) for transferring stacks of paper (50a, 50b) after a of claims 1 to 13 is formed. A method of transferring stacks of paper (50a, 50b) from a dispensing station (A) for dispensing at least one stack of paper (50a, 50b) to a receiving station (E) for receiving at least one stack of paper (50a, 50b) using a device (25 , 30) for transferring paper stacks (50a, 50b) according to one of claims 1 to 13.

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