ES2332152T3 - DEVICE, PROCEDURE AND INSTALLATION TO ACCUMULATE CLIPS FORMING BATTERIES. - Google Patents

Abstract

The device has a conveyor belt (6) for supplying of flat parts (4) in the form of clips, and a suction handling device (12) divided into two edge sections in a movement direction of the clips. An ionization unit (10) is provided up-stream of the handling device and is formed to electrostatically load the clips, where a measuring device (22) is provided in an area of edge sections for electrostatic discharge of the clips. Independent claims are also included for the following: (1) a method of accumulation of clips of paper sheets of a paper processing industry to stack in a stacking delivery (2) a system for accumulation of clips of paper sheets comprising two devices for accumulation of clips.

Description

Device, procedure and installation for accumulate clips forming batteries.

The invention relates to a device for accumulate paper sheet clips from the processing industry of paper, forming batteries in a battery repository, with a device supply to supply clips, especially in Scaled arrangement, to the battery compartment. Also the invention refers to a procedure to accumulate sheet clips of paper from the paper processing industry forming batteries in a battery storage, especially using a device of the type mentioned above, the clips being supplied, especially in scaled arrangement, to the battery storage by a supply device Finally, the invention relates to an installation to accumulate paper sheet clips from the paper processing industry forming batteries in a warehouse batteries, with at least two devices of the type mentioned previously.

Such a device, a procedure of this type and an installation of this type serve to transport clips that follow one or more conveyor belts that are extend next to each other, to a battery depot and accumulate them in this one in the form of batteries. Especially the paper sheets of Large format paper processing industry meet in several groups or flat piles, in which the sheets of paper substantially lie on top of each other and they are called "clips", and are transported, in the form of a scaled stream, to the battery compartment.

Document DE1906090A1 describes a device for stacking flat pieces, in which an upper belt extends to the top of the battery compartment. The lower branch of said upper belt extends along the lower side of a vacuum aspiration device, through which the flat parts are aspirated. For this purpose, the upper belt is configured permeable to air. The vacuum aspiration device consists of a multitude of individual chambers separated respectively by longitudinal and transverse bulkheads, each individual chamber being connected to a separate suction fan. Suction fans can be connected and disconnected at discretion. In addition, in the disconnected state of the aspirating fans, compressed air can optionally be supplied to certain individual chambers, which allows the flat object to be thrown into the battery compartment. With such a device, however, it is not possible to make a careful transport to the battery compartment. It is that in order to achieve a sufficient adhesion of the flat pieces to the lower branch of the upper belt, it is necessary to generate a relatively high suction force in the suction box, which, however, in the elaboration of relatively thin flat parts and of Large format, such as especially paper sheets, increases the danger of wrinkles as the transport along the upper belt progresses. On the other hand, if the force is adjusted to a relatively low value and therefore careful there is a danger that the effect of trans-
bearing of the upper belt due to insufficient adhesion. In addition, due to the periodic disconnection of the suction air and the switching to compressed air, the device requires complicated control, since it is continually necessary to ensure that the suction air is briefly disconnected only when a flat piece reaches its final position above the battery compartment, having to reconnect the suction air immediately afterwards.

A document FR2527570A1 is known as device for accumulating sheets of paper in a stack, in which sheets of paper are transported individually and successively to the battery. In addition, a transport device is provided by suction, arranged above the stack, which applies a force of aspiration in the sheets of paper. To control the strength of suction depending on the position of a sheet of paper at along the transport path, the transport device by aspiration is divided into two aspiration chambers located one behind another in the sense of movement of the leaves of paper.

A suction transport device similar is disclosed in JP49012567A.

EP1595836A1 describes a device for making stacks of flat parts that can be charged  electrostatically, preferably with sheets of paper. In this known device, a download device Electrostatic is arranged in the area of the battery compartment.

The present invention has the objective of guarantee, especially with a view to driving conditions difficult especially for thin and large format sheets of paper With a high transport capacity, careful transportation of the clips to the battery compartment, for an impeccable formation of batteries

According to a first aspect of the invention, this objective is achieved by a device to accumulate clips of paper sheets of the paper forming industry batteries in a battery compartment, with a supply device to supply the clips, especially in scaled arrangement, to the battery compartment, with at least one transport device per suction arranged above the battery compartment, which applies a suction force on the upper face of the clips to receive clips from the delivery device, being divided the suction transport device in at least two sections located one behind the other in the sense of movement of the clips, whose suction force decreases, in sections, at least during running rotation as the distance increases with respect to the delivery device, and with a device of load that is arranged upstream with respect to the device suction transport and that is configured in such a way that electrostatically charge the front sections, especially the edge sections of the clips, and with a download device for the electrostatic discharge of the clips, which is arranged in the area of an edge section of the battery compartment, away from the supply device

According to a second aspect of the invention, for to achieve the objective a procedure is proposed to accumulate paper sheet clips from the paper processing industry forming batteries in a battery repository, especially using a device according to at least one of the preceding claims, clips being supplied, especially in arrangement scaled, by a battery reservoir supply device and received by at least one suction transport device that is arranged above the battery compartment and that applies a suction force on the upper face of the clips, adjusting the suction force of the transport device by aspiration in at least two sections located one behind the other in the direction of movement of the clips, so that the force of suction decrease by sections in the direction of movement of the clips, at least during the rotation in progress, and being loaded the clips electrostatically in their front sections, especially its edge sections, before being received by the suction transport device, and discharged electrostatically in the area of an edge section of the tank batteries, away from the supply device.

According to a third aspect of the invention, for to achieve the objective an installation is proposed to accumulate paper sheet clips from the paper processing industry, with at least two devices according to the first aspect, in which the at least two devices, especially the at least two suction transport devices are arranged substantially parallel to each other with a separation from each other.

Since, according to the invention, at least for rotation in progress, in the section of the transport device by aspiration closest to the delivery device can adjust to a higher suction force than in a section away from the suction transport device, it is possible careful transport of clips to the tank of batteries, so the danger of crumple the sheets of paper. The invention takes advantage of the knowledge that for the transfer of device clips supply to the suction transport device is it requires a relatively high clamping force while in the area of the battery tank must have only one clamping force relatively low to cause particularly smooth adhesion of the clips and at the same time not hinder the detachment of the clips in the direction of the battery compartment. For the division by sections and the possibility of adjusting the transport device by aspiration the collapse of the vacuum is also avoided in case of drills for suction air not covered and therefore a uncontrolled distribution of aspirant air. Another advantage of the invention is that the stability of the clips to be processed already does not influence, or at least no longer significantly influences its deposition in the battery compartment, which is important especially in case of processing oversized clips, Due to its lability. Finally, the invention achieves minimize the consumption of aspirating air, which leads to a Reduction of operating expenses.

To avoid internal discoloration of clips, which may occur, not lastly, due to its lability, at least in a front section or in its edge area front are electrostatically charged, and therefore locked, by means of a loading device provided upstream from to the suction transport device. To return to download the clips then electrostatically, so that the folios of specifications can no longer adhere to each other during their following processing, for example on a printing machine, according to the invention a discharge device is also provided in the area of an edge section of the battery tank, away from the delivery device, which is preferably delimited or formed by a front dressing.

Preferably, the transport device by aspiration can be divided into at least three sections located one behind the other in the direction of movement of the flat pieces, in which case it is possible to generate, in addition to relatively high vacuum in the inlet area of the battery compartment and relatively weak vacuum in the final area of the deposit of batteries, between these two places, a medium vacuum for transport subsequent careful of the flat pieces, to continue optimizing further transport of flat parts to the warehouse of batteries

To encourage the detachment of clips of the suction transport device towards the battery repository, preferably a detachment device disposed in an edge section of the battery compartment, away from the supply device, or in the area of said edge section.

Conveniently, the discharge device can display its discharge effect substantially on the release device, so that electrostatic discharge and detachment of the clips of the aspiration transport device can be performed not only in a single procedure step, but also with single component Alternatively, however, it is obviously also possible to provide the discharge device separately from the releasing device and therefore perform electrostatic discharge, therefore, separately from the detachment procedure, in terms of function and / or space. Preferably, the release device must have at least one electroconductive section, especially metal, and the discharge device must form an electrical connection of the electroconductive section to ground, whereby the release device is grounded and, therefore,
The electrostatic charge of the clips deviates mostly at the time of the detachment of the clips.

Conveniently, the detachment device may have at least one elongated detacher element, preferably in the form of a foil, sheet, bar or strip, arranged directly below the transport device by aspiration and inclined against the direction of movement of clips towards the transport device by aspiration, so it is specially guided simple and at the same time effective clips from the device Suction transport in the direction of the battery compartment. For a particularly effective effect, the detachment element elongated extends with its upper end at least to the side bottom of the suction transport device. Further, several of these may be arranged side by side elongated detachment elements, substantially in the direction transversal with respect to the direction of movement of the clips.

To optimize the stacking procedure, the position of the detachment device can be adjusted with with respect to the suction transport device and / or the battery compartment, and especially, the height can be adjusted detachment device with respect to the battery reservoir.

According to another preferred embodiment, the suction transport device has at least one box of aspiration divided into several chambers arranged one behind another in the sense of movement of the clips, adjusting the suction force of a chamber respectively independent of the other cameras.

Alternatively or additionally, the Aspiration transport device may present several suction boxes located one behind the other in the sense of movement of the clips, each of which then forms a section, being adjusted the suction force of each box of suction independently of the other suction boxes.

Finally, the transport device by aspiration can present a perforated conveyor belt that pass in front of the bottom side of the at least one suction box forming a top tape for clips. Preferably, the distances between holes or holes for aspirating air are chosen and / or the conveyor belt is controlled or regulated in such so that a substantially constant distance is adjusted with regarding the front edge of the clips.

Conveniently, especially in facilities with several bands or sheets and / or in case of large or wide bands sheet, several transport devices are arranged by aspiration substantially parallel to each other, preferably an adjustment of the devices of suction transport, particularly transversely to the direction of transport, with the help of adjustment devices known.

Next, a detailed description of preferable embodiment of the invention, with the help of The attached figures. They show:

Figure 1 in a schematic side elevation, in section, a section of a paper transformer machine, which presents a battery repository;

Figure 2 on an enlarged scale, a first detail of figure 1; Y

Figure 3 on an enlarged scale, a second detail of figure 1.

In figure 1 it is represented in elevation schematic side, by sections, a section of a machine paper transformer in the area of the battery store 2 where, in the embodiment shown, the incoming sheets 4 are stacked overlapping scaly, forming a stack 44. Figure 2 shows an enlarged detail of an area of the Figure 1, which in this one is marked by a circle II of points and stripes; and Figure 3 shows an enlarged detail of an area of the Figure 1 which in this one is marked by a circle III of points and stripes.

Paper processing machines, which remove materials in the form of a single or multi-roll band and they transform into a format material, they are configured, in the Most cases, so that inside the machine generates a current of sheets 4, overlapped in a scaled way. This Scaled form is necessary to pass the high speed of withdrawal of band and transport, which is chosen for reasons of productivity of the installation as a whole, at a speed lowest possible to form stack 44.

For the transport of the 4 superimposed sheets a supply device that is generally consisting of one or several adjacent conveyor belts, a conveyor belt 6 being represented in figure 1. The Conveyor belt 6 is made as endless belt that deflects around rollers, of which, in figure 1, is represented the roller 8 that is closest to the tank of batteries 2. During transport to the battery tank 2 in the direction of the arrow A, the sheets 4 lie on the upper face of the upper branch of the conveyor belt 6, as can be seen in figure 1.

In addition, in figure 1 it is represented schematically an ionizing device 10 arranged current above with respect to the battery compartment. However the ionizing device 10 can also be found in one more place away, upstream, in the paper transformer. By means of the ionizing device 10 it is achieved that the different 4 superimposed sheets of a clip adhere to each other by the electrostatic charge of its front edge sections and not can move with respect to each other.

As also seen in figure 1, above a transport device 2 is disposed of a transport device by suction 12 that not only protrudes above all the tank of 2 batteries, but also extends, against the direction of movement of sheets 4 and, therefore, in the opposite direction to direction of arrow A, above a section of the belt conveyor 6. In the embodiment shown, the suction transport device 12 has a box of aspiration 14 which is divided into five aspiration chambers 14a, 14b, 14c, 14d and 14e separated from each other and placed one behind the other in the direction of movement of the sheets 4 according to arrow A. The first suction chamber 14a is still located in front of the Battery tank 2, in the area above the belt conveyor 6, seen in the direction of movement of the sheets 4 according to arrow A.

In addition, the transport device by aspiration 12 has an upper belt 16 extending in the direction of the conveyor belt 6 and therefore in the sense of movement of the sheets 4 according to arrow A. The upper belt 16 is guided around the suction box 14 and deflects around a front roller 18 located in front of the box suction 14 and a rear roller 19 located behind the box aspiration 14, so that, with its upper branch, the upper belt 16 passes in front of the upper side of the suction box 14 and, with its lower branch, it passes in front of the lower side of the box suction 14. In the area of the conveyor belt 6, the belt upper 16 meets its lower branch than a small distance above the upper branch of the conveyor belt 6, the distance corresponding at least to the thickness of the current of sheets 4 overlapped in a scaled way.

On its lower side, the suction box 14 it is provided with suction holes not designated in detail in the figures, intended to aspirate air and generate a vacuum and generate in this way a suction force. Not to diminish the suction effect, upper belt 16 is perforated presenting corresponding holes 17, as can be seen in detail in figure 2. To also achieve a suction effect Safe and reproducible, tape hole distribution upper 16 is chosen so that, during the march, a substantially constant distance of the holes 17 results with respect to the front edge of the clips formed by the sheets 4. For this, conveniently, the upper belt 16 can be controlled or regulated accordingly in terms of its speed and its position relative to the sheets 4.

Below the fifth suction chamber 14e and, therefore, at the end of the battery reservoir 2, remote with respect to the conveyor belt 6, a sheet is arranged stripper 20 that extends against the sense of movement A of the sheets, obliquely upwards, in the direction towards the bottom side of the suction box 14, remaining located its upper end 20a in the lower section of the box  aspiration 14, as can be seen especially in Figure 3. The stripper plate 20 has an inclined section, designated by the reference sign 20b in figure 3, to deflect the sheets 4 arriving there with their front edge, down in the direction of arrow B (figure 1) in the direction of the tank of batteries 2. The release plate 20 may be made, by example, in two pieces, in the form of a fork on the left and the right of the suction transport device 12 or in two pieces. Several detachment plates may also be provided. located parallel to each other. To optimize the vertical position of the release plate 20 with respect to the battery compartment 2, an adjustment device may be provided usual, not represented in detail in the figures.

The stripper plate 20 is composed, in al minus one section, grounded metal through a wire electric ground 22, the electric ground wire 22 acting as ionizing device The electrical mass may be formed by for example, by a machine frame not shown in detail. When the sheets 4 electrostatically charged by the ionizing device 10 come into contact with the sheet stripper 20, therefore, the electrostatic charge of the sheets 4 is diverted by the electrical ground cable.

As can also be seen in figures 1 and 3, the slanting plate 20 inclined oriented is located on a vertically arranged wall element 24, which delimits the battery compartment 2 at the far end of the tape conveyor 6, acting as a stopper or front straightener. For the therefore, the flat pieces 4 stacked forming a stack 44 are substantially in contact with the wall element 24 that delimits  the battery compartment 2, as schematically represented in Figure 1. Battery tank 2 is not only delimited by the wall element 24 located downstream but also by a wall element 26, adjacent to the conveyor belt 6 and arranged vertically, upstream. In addition, the deposit of Stacks 2 presents a table 28 movable in the vertical direction for place battery 44 on top of it.

In the area of the first suction chamber 14a, the sheets 4 provided in scaled arrangement by the conveyor belt 6 is subjected to a suction force in the upper face of its leading edge, so they are received by the suction transport device 12. The following transport of sheets 4 to the area of the battery compartment 2 lo performs the upper belt 16 which rotates at the same speed as the Conveyor belt 6. Due to the suction force generated by the suction box 14, the sheets 4 are adhered to the bottom side of suction box 14 during its next movement, during which initially they maintain the disposition Scaled, as can be seen in Figure 2.

The suction chambers 14a to 14e inside the suction box 14 are configured separately between yes, so that the suction air in each box of aspiration can be controlled independently of the others suction chambers, so that in each suction box you can individually adjust the suction force generated by the same. This selective and separate adjustment of the suction air or vacuum in the corresponding suction chambers 14a to 14e, allows careful transport of sheets 4, which is describe in detail later. Thanks to the division of the box of suction 14 by sections, in aspiration chambers 14a to 14e independent of each other, the collapse of the vacuum can also be avoided in case of holes for aspirating air not covered on the side bottom of the suction box 14 and therefore a distribution uncontrolled suction air.

In the embodiment shown, the suction air in the suction chambers 14a to 14e is adjusted preferably in such a way that the first suction chamber 14a generate a relatively high suction force to aspirate the 4 sheets in the area of its leading edge, while in the suction chambers 14b to 14e following the suction force decreases successively, being generated only an effect of relatively weak suction through the last suction box 14e in the stripper area 20. The suction chambers 14b, 14c and 14d located between the first suction box 14a and the last suction box 14e then generate a suction force of medium intensity that also decreases from the second box of suction 14b to the fourth suction box 14d.

The relatively high vacuum generated by the First suction box 14a, not only allows a safe transfer from the paper sheets 4 of the conveyor belt 6 to the belt upper 16, but also necessary to safely aspirate the entire group (of clips), due to the scaled arrangement of 4 sheets supplied. For the next transport of the clips to the area of the battery tank 2, however, a force is sufficient of lower suction, such as that generated by the suction boxes 14b to 14d, to transport sheets 4 in a safe way, but careful, due to its lability, being attracted to the tape upper 16 to the battery compartment 2 until entering with its edge front in contact with the stripper plate 20. There, the sheets are not only electrostatically discharged the way described above, but, by the inclined section 20b of the stripper plate 20 deviate, in the direction of arrow B, towards the battery 44 located in the battery compartment 2. Therefore, the release plate 20 causes the sheets 4 to be released from the upper belt 16. In order not to obstruct this detachment, the box of aspiration 14e which upstream is the last and that in the present example of embodiment is the fifth, generates only one relatively weak suction effect, which, moreover, it can also happen already in the fourth suction box 14d previous, upstream. After releasing sheet 4 of the suction transport device 12, it falls towards down, in the direction of arrow B, to the battery compartment 2, on the battery 44 already located in it.

In conclusion, it should be mentioned that, instead of a suction box 14 together with several suction boxes 14a a 14e separated from each other, several boxes can also be provided of suction located one behind the other with a separation each other, each of which performs the function of a box of corresponding aspiration. It is also possible to provide several suction transport devices 12 located next to each other of others.

Depending on the width of the sheet and / or the sheet stability, two or more of the devices described above for each band.

Claims (24)

1. Device for accumulating paper sheet clips (4) of the paper processing industry, forming batteries (44) in a battery store (2), with a supply device (6) to supply the clips, especially in disposition Scaled to the battery tank (2), with at least one suction transport device (12) arranged above the battery tank (2), which applies a suction force on the upper face of the clips to receive the clips of the supply device (6), the suction transport device (12) being divided into at least two sections (14a to 14e) located one behind the other in the direction of movement (A) of the clips, whose suction force decreases during travel, in sections, as the distance from the supply device (6) increases, and with a loading device (10) that is arranged upstream from the suction transport device (12) and which is set d e such that electrostatically charges the front sections, especially the edge sections of the clips, and with a discharge device (22) for electrostatic discharge of the clips, which is arranged in the area of an edge section of the tank of batteries (2), away from the device
supply (6). 2. Device according to claim 1, in the that the suction transport device (12) is divided in at least three sections (14a to 14e) located one behind the other in the direction of movement (A) of the clips. 3. Device according to at least one of the preceding claims, with a detachment device (20) arranged on an edge section of the battery tank (2), remote of the supply device (6), or in the area of said section of edge, to encourage detachment of device clips of transport by aspiration (12) in direction (B) towards the battery tank (2). 4. Device according to claim 3, in the that the download device (22) displays its download effect substantially in the release device (20). 5. Device according to claim 4, in the that the release device (20) has at least one section electroconductive, preferably metal, and the device discharge (22) forms a ground electrical connection of the section electroconductive 6. Device according to at least one of the claims 3 to 5, wherein the detacher device (20) It has at least one elongated detachment element, arranged by under the suction transport device (12) e tilted against the direction of movement (A) of the clips in direction to the suction transport device (12). 7. Device according to claim 6, in the that the elongate detacher element (20) extends, with its upper end (20a) at least to the lower side of the suction transport device (12). 8. Device according to claim 6 or 7, in which the elongated release element is composed of a sheet metal, a strip or a bar. 9. Device according to at least one of the claims 6 to 8, wherein the detacher device (20) It presents several elongated detached elements, arranged substantially transverse to the direction of movement (A) of the clips. 10. Device according to at least one of the claims 3 to 9, wherein the position of the scraper device (20) with respect to the transport device by aspiration (12) and / or to the battery tank (2). 11. Device according to claim 10, in which the release device (20) can be adjusted in height with respect to the battery tank (2). 12. Device according to at least one of the preceding claims, wherein the transport device  by suction (12) has at least one suction box (14) divided into several chambers (14a to 14e) arranged one behind another in the direction of movement (A) of the clips, each of the which forms a section with an adjustable suction force independently of each other. 13. Device according to at least one of the preceding claims, wherein the transport device  by aspiration it presents several suction boxes located a behind another in the sense of movement of the clips, each of which it forms a section with an adjustable suction force independently of each other. 14. Device according to claim 12 or 13, in which the suction transport device (12) has a perforated conveyor belt (16) that passes in front of the side bottom of the at least one suction box (14) forming a upper tape for clips (14). 15. Device according to claim 14, in which the perforated conveyor belt (16) has a hole distribution adapted to the overlap in one arrangement Scaled clips. 16. Device according to claim 14 or 15, in which the suction transport device (12) has a control or regulation device that controls or regulates the conveyor belt (16) perforated in terms of its speed and its position relative to the clips. 17. Procedure to accumulate sheet clips of paper from the paper-forming industry forming batteries (44) in a battery compartment (2), especially using a device according to at least one of the preceding claims, clips being supplied, especially in arrangement scaled, by a supply device (6) of the batteries (2) and received by at least one transport device by suction (12) that is arranged above the battery compartment (2) and that applies a suction force on the upper face of the clips, adjusting the suction force of the device suction transport (12) in at least two sections (14a to 24e) located one behind the other in the direction of movement (A) of the clips, so that the suction force decreases by sections in the direction of movement (A) of the clips, at least during the rotation in progress, and the clips being loaded electrostatically in its front sections, especially sections edge, before being received by the transport device by aspiration (12), and electrostatically discharged in the area of an edge section of the battery compartment (2), away from the delivery device (6). 18. Method according to claim 17, in which the suction force of the transport device by suction (12) fits in at least three sections (14a to 14e) located one behind the other in the direction of movement (A) of the clips. 19. Method according to claim 17 or 18, in which the clips are released from the transport device by suction (12) in the direction (B) towards the battery compartment (2), with the help of a detaching device (20) arranged preferably on an edge section of the battery container (2), away from the supply device (6), or in the area of such edge section. 20. Procedure according to at least one of the claims 17 to 19, wherein the clips are downloaded electrostatically by the release device (20). 21. Method according to claim 20, in the one for the electrostatic discharge of the clips, at least one electroconductive section, preferably composed of metal, of detachment device (20), electrically connects to mass. 22. Procedure according to at least one of the claims 17 to 21, wherein the transport device by suction (12) has at least one suction box (14) divided into several chambers (14a to 14e) arranged one behind another in the direction of movement (A) of the clips, each of the which forms a section, whose suction force is adjusted regardless of the other sections. 23. Procedure according to at least one of the claims 17 to 22, wherein the transport device by aspiration it presents several suction boxes located a behind another in the sense of movement of the clips, each of which it forms a section, whose suction force is adjusted regardless of the other suction boxes. 24. Installation to accumulate sheet clips of paper (4) of the paper-forming industry forming batteries (44) in a battery compartment (2), with at least two devices according to at least one of claims 1 to 16, wherein at least two devices, especially at least two suction transport devices (12), are arranged substantially parallel to each other with a separation between them.