EP1870361B1 - Procédé et dispositif destinés à la formation de piles de pièces plates - Google Patents

Procédé et dispositif destinés à la formation de piles de pièces plates Download PDF

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Publication number
EP1870361B1
EP1870361B1 EP07011236A EP07011236A EP1870361B1 EP 1870361 B1 EP1870361 B1 EP 1870361B1 EP 07011236 A EP07011236 A EP 07011236A EP 07011236 A EP07011236 A EP 07011236A EP 1870361 B1 EP1870361 B1 EP 1870361B1
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EP
European Patent Office
Prior art keywords
stack carrier
auxiliary
carrier
main
movement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP07011236A
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German (de)
English (en)
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EP1870361A1 (fr
Inventor
Bernd Höpner
Holger Kröger
Jochem Meyer
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ECH Will GmbH and Co
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ECH Will GmbH and Co
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Publication of EP1870361A1 publication Critical patent/EP1870361A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/32—Auxiliary devices for receiving articles during removal of a completed pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/422—Handling piles, sets or stacks of articles
    • B65H2301/4225—Handling piles, sets or stacks of articles in or on special supports
    • B65H2301/42256—Pallets; Skids; Platforms with feet, i.e. handled together with the stack
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/30—Other features of supports for sheets
    • B65H2405/32—Supports for sheets partially insertable - extractable, e.g. upon sliding movement, drawer

Definitions

  • the invention relates to a device for forming stacks of flat parts, in particular sheets such as sheets of paper, in a stacking area with substantially uninterrupted conveyance of the flat parts to the stacking area, with a main stack support on which the flat parts are stackable, and a Hiffsstapelisme, after reaching a predetermined number of stacked on the main stack carrier flat parts over the then formed by the predetermined number of flat parts on the main stack carrier finished stack in the stack area can be brought to receive subsequent flat parts stacked, the main stack support provided for the removal of the finished stack and in the empty state can be brought under the auxiliary stack carrier located in the stack area and wherein the auxiliary stack carrier for the transfer of the part stack formed on the auxiliary stack carrier up to this time on the main stack carrier from the stack area is retractable.
  • Critical is the transfer of the sub-stack of withdrawing from the stack area auxiliary stack carrier on the main stack carrier. Because the auxiliary stack carrier has a certain thickness, arises in the moment in which the sub-stack leaves the auxiliary stack carrier and deposits on the main stack carrier, in the lower portion of the sub-stack a shaft. As a result of the formation of such a shaft, the lower region of the partial stack is not stored vertically but offset relative to the remaining section of the partial stack. This disadvantageous effect can be further enhanced by a friction occurring between the upper side of the auxiliary pile carrier and the underside of the partial stack, whereby the lower layers of the partial stack can be taken along during the retraction movement of the auxiliary pile carrier from the stack area.
  • a second auxiliary stack carrier in addition to a first auxiliary stack carrier, a second auxiliary stack carrier is provided.
  • the second auxiliary stack carrier is disposed on the opposite side of the stack area with respect to the first auxiliary stack carrier. After retracting the first auxiliary stack carrier and reaching a position of the second auxiliary stack carrier opposite thereto, the second auxiliary stack carrier is moved synchronously with the rewinding of the first auxiliary stack carrier to a middle position in the stacking area and then withdrawn from the stack area in opposite directions synchronously with the extension of the first auxiliary stack carrier.
  • the partial stack formed thereupon then deposits on a pallet which lies on the main stack carrier which is already located below the plane formed by the two auxiliary stack carriers. Although in each case forms a wave at the mutually facing ends of the two auxiliary stack carrier. However, since these two shafts are directed opposite to each other, a compensation results, so that is stored by the synchronous symmetrical extension of the two auxiliary stack carrier of the sub-stack substantially without edge offset. Not least, the arrangement of a second auxiliary stack carrier requires in this known device a complex construction and complicated control, which is also reflected adversely in increased manufacturing, operating and maintenance costs.
  • a stacking device for stacking a stack of flat material layers in which initially on a pallet an initial stack between a vibrating Ausrichtanschlag and a facing aligner is piled so that the edge region lying at the Ausrichtanschlag over the pallet. Then, a pallet is lowered with the supporting this lowering table such that the edge area runs onto an under him driven auxiliary table and is raised with this slightly above the level of the support surface of the pallet.
  • the pallet can then be moved with a slider under the starting stack, the registration fence and the auxiliary table so that all the stacking edges are set back from the outer limits of the pallet, after which the auxiliary table is retracted and the raised edge area under guidance falls on the bearing surface on the alignment surface of the stopped alignment stop. Then the stack is stacked to its full height.
  • the object is achieved by an apparatus for forming stacks of flat parts, in particular sheets, such as paper sheets, in a stacking area with substantially uninterrupted conveyance of the flat parts to the stacking area, with a main stack carrier on which the flat parts can be stacked , and an auxiliary stack carrier, which after reaching a predetermined number of stacked on the main stack carrier flat parts over the then formed by the predetermined number of flat parts on the main stack carrier finished stack in the stack area can be brought to receive subsequent flat parts stacked, wherein the main stack carrier for the removal provided in the finished stack and can be brought in the empty state under the auxiliary stack carrier located in the stack area and wherein the auxiliary stack carrier for the transfer of the formed up to this time on the auxiliary stack carrier part Stackable on the main stack support from the stack area is retractable, characterized in that at least one of the top at least partially forming portion of the main stack support is at least substantially opposite to the direction of retraction movement of the auxiliary stack support movable and that a control
  • the invention proposes to make at least one portion of the main stack carrier at least partially forming in the direction of the retracting movement of the auxiliary stack carrier movable and movement of at least this uppermost at least partially forming portion of the main stack carrier substantially opposite to the retraction movement to use the auxiliary stack carrier for the compensation of an S-beat or offset in the lower part of the sub-stack.
  • this feed movement according to the invention forming a compensation movement, the leading edge of the lower region of the sub-stack is again pushed vertically under the remaining section of the sub-stack so that the formation of an S-impact or offset is prevented or at least reduced to a minimum in this manner.
  • the path length should be at least equal to the movement substantially opposite to the retraction movement of the auxiliary pile carrier the top of at least partially forming portion of the main stack support be individually adjustable and thus adjustable.
  • the invention offers a structurally and control-technically simple, but effective solution.
  • the DE 199 28 367 A1 a method and apparatus for changing pallets for sheet stacks with continuous sheet feeding to the stacking station using a main table and an auxiliary table.
  • the auxiliary table is provided with an endlessly circulating cloth, which is moved when pulling out of the auxiliary table with opposite, but in terms of the same speed along the auxiliary table.
  • the fact that therefore the relative speed of the cloth relative to the auxiliary table has the same amount as the speed of the auxiliary table against a space fixed point during its withdrawal from the stack area, but the movements of cloth and auxiliary table and thus their speeds are directed opposite to each other, there is no relative movement between the bottom of the bottom arch of a sub-stack and the cloth.
  • the at least one of the top at least partially forming portion of the main stack support at least one of the top at least partially forming Section of the auxiliary pile carrier to perform a movement substantially opposite to the retracting movement of the auxiliary pile carrier.
  • a suitably driven cloth are suitable.
  • the main stack support may have an at least partially forming its top tray table, which moves relative to the remaining portion of the main stack carrier substantially opposite to the retraction movement of the auxiliary stack carrier.
  • main stack support with an endlessly circulating conveyor belt whose upper run at least partially forms the top of the main pile support and moves substantially opposite to the retraction movement of the auxiliary pile support.
  • the entire main stack carrier may be designed to be movable substantially opposite to the retraction movement of the auxiliary stack carrier.
  • the advancing movement of the auxiliary stack support substantially opposite to the retraction movement of at least the uppermost at least partially forming section of the main stack support should only be initiated after the auxiliary stack support has already carried out its retraction movement by a predeterminable distance.
  • the fact is taken into account that sufficient friction occurs when already a part of the sub-stack rests on the main stack support in order to then be able to take them accordingly by the feed movement.
  • a movable receiving element preferably a pallet, is placed on the main stack carrier for receiving and transporting the stack.
  • At least the portion of the main stack carrier forming the upper side at least in part should perform an upward movement in addition to its feed motion substantially opposing the retraction movement of the auxiliary stack carrier, in order to be able to compensate at least the thickness of the retracting or already retracted auxiliary stack carrier.
  • substantially the entire main stack carrier can perform such an upward movement. This additional upward movement should take place at least until the upper side of the main stack carrier or the upper side of the receiving element located on the main stack carrier reaches approximately the level of the upper side of the previously completely retracted auxiliary stack carrier.
  • At least one separation shoe which is already mostly used in the prior art, at least the top of the main stack carrier at least partially perform its for retraction of the auxiliary stack carrier substantially opposite feed movement, while the release agent is still in the stacking area and preferably until it has been removed from the stacking area.
  • a corresponding control device is provided.
  • the control means controls the upward movement substantially simultaneously with the feed movement substantially opposite to the retraction movement of the auxiliary pile carrier.
  • a first drive means and for the upward movement, a second drive means may be provided for the retraction movement of the auxiliary stack carrier substantially opposite feed movement, said two drive means are controlled by the control device accordingly.
  • the control device at least one slotted guide for has mechanical guide at least the top of the at least partially forming portion of the main stack carrier.
  • FIGS. 1 to 13 1 schematically show an embodiment of a method according to the invention in the form of thirteen schematic snapshots of operating states of a preferred embodiment of a device according to the invention carrying out the method according to the invention.
  • the device has a top belt 4 and inlet side to the stacking point 2 located a conveyor plane 6 and a transport roller 8. Between the upper belt 4 on the one hand and the transport plane 6 and the transport roller 8 on the other hand sheet 10 are conveyed in the direction of arrow A to the stacking point 2, wherein the transport of the sheet 10 takes place substantially continuously.
  • a conveying plane 6 and a transporting roller 8 a lower band which terminates upstream of the stacking station 2.
  • the conveyed sheets 10 are stacked in the stacking station 2 into stacks on a pallet 12, which rests on top of a main stacking platform 14.
  • the main stacking platform 14 is in the FIGS. 1 to 13 Not shown manner mounted vertically movable.
  • the stacking point 2 is limited in the conveying direction by serving as a stop for the conveyed to the stack 2 sheet 10 wall-like front runner 16.
  • the front end 16 opposite the stacking point 2 is limited by a schematically illustrated, wall-mounted rear 18.
  • the front-end 8 and the rear-end 18 are vertically arranged. Down the stacking point 2 is limited by the already mentioned pallet 12.
  • the pallet 12 carrying the main stacking platform 14 is lowered during the stacking of the sheet 10 at such a speed down that the top of the stack remains approximately always at the same height, ie relative to the conveying plane (at the level of in FIG. 1 shown arrow A) remains approximately unchanged.
  • the downward movement of the main stacking platform 14 is controlled by a control device, which will be explained in more detail later in the description.
  • the rear erector 18 has, in the figures, not shown, vertical recesses through which a separating finger 20 can get into the stacking point 2.
  • the separating finger consists in the illustrated embodiment of a substantially horizontally oriented plate and is located at the upper end of an im Substantially vertically disposed arm 22 which is pivotally mounted in unspecified manner.
  • a separating shoe 24 is provided, which is mounted in a manner not shown movable both in the vertical and in the horizontal direction.
  • separating finger 20 and one separating shoe 24 are shown in the figures, usually a plurality of separating fingers 20 and in particular a plurality of separating shoes 24 in the direction transverse to the plane of drawing of FIG. 1 used side by side.
  • an auxiliary stacking platform 26 Adjacent to the separating shoe 24, an auxiliary stacking platform 26 is arranged, which in the FIGS. 1 to 6 and 11 to 13 only with their stacking point 2 adjacent end, but in the FIGS. 7 to 10 is shown completely.
  • the auxiliary stacking platform 26 is movable in a manner not shown both in the vertical and in the horizontal direction. In the horizontal direction, the auxiliary stacking platform 26 between an in FIG. 1 shown rest position outside the stacking point 2 and, viewed in the conveying direction according to arrow A, upstream of this and a working position in which it is fully retracted into the stacking point 2, movable.
  • auxiliary stacking platform 26 If the auxiliary stacking platform 26 is retracted into the stacking station 2, it is lowered vertically downwards at a speed similar to the main stacking platform 14, so that the upper side of the sub-stack then formed on the auxiliary stacking platform 26 remains approximately always at the same height, ie approximately relative to the conveying plane remains unchanged. Moves upwardly in the vertical direction, the auxiliary stacking platform 26, when in their rest position according to FIG. 1 located. This movement sequence of the auxiliary stacking platform 26 is likewise influenced by the already mentioned control device.
  • FIG. 1 still a rear pallet manager 28 shown recognizable, between a in FIG. 1 shown rest position outside the stacking point 2 and, viewed in the conveying direction according to arrow A, upstream of this and a working position according to the FIGS. 7 to 11 is movably mounted below the rear Anrichters 18 in a manner not shown.
  • the movements of the separating finger 20, the separating shoe 24 and the pallet feeder 28 are also controlled accordingly by the already mentioned control device. Strictly speaking, the movement of the separating finger 20, the separating shoe 24 and the pallet feeder 28 take place by means not shown drives, which are connected to the control device. The same applies to the in the FIGS. 1 to 13 not shown drives for the main stack platform and also not shown drives for the auxiliary stack platform 26th
  • FIGS. 1 to 13 The following is based on the FIGS. 1 to 13 the operation of in FIG. 1 shown device, for reasons of clarity in the FIGS. 2 to 13 only the reference numerals of those components are given, which are of importance for the respective process step shown there.
  • FIG. 1 shows the ground state of the device or the method.
  • a predetermined number of sheets 10 are initially stacked on the pallet 12 in the stacking station 2, controlled by the already mentioned control device. This is done by a continuous stream of sheet 10 to the stacking point 2 is promoted against the front end 16.
  • the main stacking platform 14 is lowered to leave the top of the slowly growing stack approximately unchanged relative to the conveying plane.
  • the separating finger 20, the separating shoe 24, the auxiliary stacking platform 26 and the pallet manager 28 are each in their in FIG. 1 shown rest position.
  • the separating finger 20th in the direction according to the conveying direction according to arrow A moves until it engages over the thus formed, finished sheet stack 20, as FIG. 2 lets recognize.
  • the separating finger 20 thus limits according to FIG. 2 the finished stack of sheets 20 upwards and separates the subsequent uninterrupted promotion sheet 10 of the finished stack of sheets 30th
  • the separating finger 20 is simultaneously lowered to the main stacking platform 14 and thus to the finished sheet stack 30, which is now encompassed by the separating finger 20, as indicated by the arrow B in FIG FIG. 2 and by the arrow C in FIG. 3 is indicated.
  • the separating finger 20 forms a further partial stack 30a, which rests on the finished stack of sheets 30 and slowly grows due to the uninterrupted promotion of further sheet 10.
  • the inserted separating finger 20 defines a first virtual parting line 32 between the lower finished sheet stack 30 and the partial stack 30a growing above it FIG. 3 can also recognize.
  • control device now controls the movement of the separating finger 20 such that the lowering of the separating finger 20 with respect to the lowering speed of the main stacking platform 14 is slower. Due to the faster lowering of the main stacking platform 14 continues in the direction of now FIG. 4 Arrow D shown opposite to the lowering of the separating finger 20 forms a in FIG. 4 recognizable gap 34, which is bounded down from the top of the finished stack 30 at the level of the first dividing line 32 and upwards from a now formed by the separating finger 20 second virtual parting line 36.
  • FIG. 5 shows, the separating shoe 24 is now inserted in this gap 34 in the horizontal direction according to arrow E.
  • the separating finger 20 is returned to its rest position and the main stacking platform 14 moves with higher lowering speed down in the direction of arrow I, as in FIG. 8 is shown.
  • conveyor belt may be provided, the upper strand forms the top of the main stacking platform 14 and pushes with appropriate rotation, the pallet 12 resting thereon with the finished stack of sheets 30 from the main stacking platform 14 to another funding.
  • this conveyor belt also referred to as a pallet conveyor, transverse to the conveying direction of the sheet 10 as indicated by arrow A of FIG. 1 ,
  • a new empty pallet 12 arrives on the main stacking platform 14.
  • the main stacking platform 14 is now lifted vertically in the direction of the arrow J, as in FIG FIG. 9 recognize until the main stacking platform 14 with the empty pallet 12 in a position below the auxiliary stacking platform 26 according to FIG. 10 arrives.
  • the pallet applicator 28 located in its working position ensures a desired alignment of the pallet 12 with respect to the partial stack 30a, which is still carried by the auxiliary stacking platform 26 retracted into the stacking station 2 and due to continuous feed further sheet 10 continues to grow.
  • FIG. 10 is the partial stack 30a in its rear, (with respect to the conveying direction of the arc 10 according to arrow A of FIG. 1 , Upstream edge portion still on the separator shoe 24, whereby on the underside of the sub-stack 30a, a small wave has arisen.
  • the partial stack 30a does not lie on the auxiliary stacking platform 26 located beneath the separating shoe 24, so that only a part of the weight of the partial stack 30a is carried by the auxiliary stacking platform 26 on its section adjacent to the front-mounted implement 16.
  • This facilitates pulling out the auxiliary stacking platform 26 from the stacking point 2 in the direction of the arrow R according to FIG FIG. 11 in which the auxiliary stacking platform 26 is again shown in its rest position, in which it is then completely withdrawn from the stacking station 2.
  • the partial stack 30a with its front portion adjacent to the front implement 16 drops onto the empty pallet 12 carried by the main stacking platform 14. This transfers the transfer of the sub-stack 30 to the pallet 12.
  • the transfer of the sub-stack 30a from the auxiliary stacking platform 26 to the pallet 12 is critical. Since the auxiliary stacking platform 26 has a certain thickness, increases in the moment in which the partial stack 30a, the withdrawing auxiliary stack platform 26 and is deposited on the pallet 12, formed on the underside of the sub-stack 30a and previously mentioned wave.
  • a step can form, which is also referred to as a so-called "S-dash" and represents a quality defect.
  • the horizontal lifting movement according to arrow H also takes place during the extraction of the separating shoe 24, as in FIG. 13 is indicated. Since the size of the aforementioned wave may be variable depending on the type of paper, the length of the section, the height of the sub-stack 30a formed up to this point, the geometry of pulling out the auxiliary stacking platform 26 and other factors, the magnitude of the horizontal lifting movement should be variable according to arrow H. be adjustable. In this context, it is beneficial to the movement controlled by adding a suitable sensor instead of being controlled.
  • the horizontal movement according to arrow H should also be synchronous to the vertical stroke according to arrow V. It is conceivable that this synchronization is not linear, but an arbitrary, predetermined curve follows. The control of this sequence of movements is also taken over by the already mentioned control device.
  • the pallet applicator 28 is moved back to its rest position outside the stacking point 2.
  • FIG. 14 schematically shows in block diagram a preferred embodiment of a control and drive means 40 for controlling the basis of the FIGS. 1 to 13 described method steps of the device schematically shown there.
  • an operation terminal 42 is provided to a Machine control 44 is connected.
  • the machine controller 44 processes not only the data obtained from the operation terminal 42, but also the signals received from a laser photointerrupter 46, a back edge sensor 48, and a front edge sensor 50.
  • the laser light barrier 46 serves to count the sheets 10 or clips and is usually located on the inlet side of the stacking point 2, for example in the region of the transport roller 8 (FIG. FIG. 1 ). Counting the sheets 10 is important to determine when the formation of the stack 30 (FIG. FIG.
  • the Hinterkantensensorik 48 and the Vorderkantensensorik 50 are provided, inter alia, to detect the alignment of the lower layers of the formed on the auxiliary stack platform 26 sub-stack 30a, in order to determine the resulting by the shaft offset between the leading edges and the trailing edges of the sub-stack 30a, from which then the required length of the horizontal feed path for the main stacking platform 14 in the direction of the arrow H of FIG. 12 and 13 is determined. Accordingly, the rear edge sensor 48 in the plane of the rear hopper 18 and at the height of the auxiliary stacking platform 26 and the front edge sensor 50 in the plane of the front end 16 and also at the height of the auxiliary stacking platform 26 is to be arranged.
  • the machine controller 44 is coupled to a drive controller 52 that includes a drive controller 54 to which a lift drive motor 56 for vertical movement of the main stack platform 14 and an associated position sensor 58 are connected. Furthermore, the drive controller 52 includes a drive controller 60, to which a horizontal drive motor 62 for the horizontal feed movement of the main stack platform 14 and an associated position sensor 64 is connected. Further leaves FIG. 14 schematically recognize that the drive controller 52 includes a drive controller 66, to which also a horizontal drive motor 68 and an associated position sensor 70 are connected. The horizontal drive motor 68 also serves to generate the horizontal feed movement of the main stack platform 14. Die in FIG.
  • control and drive means for the other components in the FIGS. 1 to 13 As shown, for example, the separating finger 20, the separating shoe 24, the auxiliary stacking platform 26 and the pallet manager 28. Of course, such control and drive means are also provided.
  • the main stacking platform 14 synchronously both a vertical lifting movement according to arrow V and a horizontal lifting movement according to arrow H, from which then a corresponding obliquely upward movement results.
  • FIG. 15 shown vector diagram shown schematically.
  • FIG. 15 It can clearly be seen that the resulting movement S R results from a combinatory effect of a vertical motion vector S v (corresponding to arrow V of FIG. 12 and 13 ) and a horizontal motion vector S H (corresponding to arrow H of FIG. 12 and 13 ) is formed.
  • the associated drives 56, 62 and 68 in the control and drive device 40 of FIG. 14 can be the location-dependent change the motion vectors S v and S H , whereby the main stacking platform 14, for example, can perform a curved movement.
  • FIG. 16 shows a more detailed perspective view of an embodiment of the previously with reference to FIGS. 1 to 13
  • Discernible is a four-legged frame 80 with two inlet-side vertical uprights 82 and two opposing uprights 83, wherein each of a stand 82 and a stand 83 are connected by an upper longitudinal beam 84 with each other.
  • the main stacking platform 14, which can also be seen, is suspended on the frame 80 on a chain drive, which ensures the vertical movement of the main stacking platform 14.
  • FIG. 16 are only dot-dashed from the chain drive Lines 86 are shown for schematic representation of the course of the chains and two sprockets 88, at which the chains are deflected.
  • the chains are led together to a drive, which in FIG. 16 not shown; this drive is the in FIG. 14 schematically shown lifting drive motor 56th
  • the main stacking platform 14 is guided by means of carriages 89, 90 in vertical rails arranged on the uprights 82, 83. These carriages 89, 90 are designed to move horizontally in the direction of the arrow H of FIG. 12 and 13 allow.
  • the carriages 90 are each provided with a drive which generates the previously described horizontal feed movement of the main stacking platform; these drives are the in FIG. 14 schematically illustrated horizontal drive motors 62 and 68th
  • FIG. 17 The structure and arrangement of one of the two carriages 90 is shown in FIG FIG. 17 shown enlarged.
  • the carriage 90 has rollers, of which in FIG. 17 only partially a role with the reference numeral "92" is shown recognizable. These rollers 92 run in a vertical rail 94 arranged on the stand 83.
  • the carriage 90 also has a support 96, which on the one hand is located on the main stacking platform 14 and on the other hand also in a FIG. 17 only indicated as a dotted line chain 86 of the aforementioned chain drive is attached.
  • the horizontal drive motor 62 Also supported on the carrier 96 is the horizontal drive motor 62, whose output shaft via a toothed belt drive 98 drives a horizontally mounted spindle 100, whereby a linear drive is formed, which generates the horizontal lifting movement of the main stacking platform 14 relative to the stator 83.
  • the adjustment also takes place with respect to the rollers 92, which are mounted on an unrecognizable element on which a likewise unrecognizable nut is arranged rotationally fixed, by which the spindle 100 is guided.

Claims (34)

  1. Procédé pour la formation de piles de pièces plates (10), en particulier de feuilles telles que, par exemple, des feuilles de papier, dans une zone d'empilage (2) par un transport sensiblement ininterrompu des pièces plates (10) vers la zone d'empilage (2), comprenant les étapes suivantes :
    a. empiler des pièces plates (10) sur un support d'empilage principal (14),
    b. une fois atteint un nombre prédéterminable de pièces plates (10) empilées sur le support d'empilage principal (14), amener un support d'empilage auxiliaire (26) dans la zone d'empilage (2) au-dessus de la pile (30) terminée alors formée par le nombre prédéterminable de pièces plates (10),
    c. empiler les pièces plates (10) suivantes sur le support d'empilage auxiliaire (26),
    d. extraire la pile (30) finie du support d'empilage principal (14),
    e. amener le support d'empilage principal (14) alors vide sous le support d'empilage auxiliaire (26), et
    f. retirer le support d'empilage auxiliaire (26) de la zone d'empilage (2) pour ainsi transférer sur le support d'empilage principal (14) la pile partielle (30a) formée jusqu'alors sur le support d'empilage auxiliaire (26),
    caractérisé en ce que, pendant et/ou après l'étape f), au moins une partie du support d'empilage principal (14) formant au moins partiellement la face supérieure exécute un mouvement d'avance (H) dans une direction sensiblement opposée au mouvement de retrait (R) du support d'empilage auxiliaire (26) pour pouvoir entraîner la pile partielle (30a), de manière correspondante, par ce mouvement d'avance (H).
  2. Procédé selon la revendication 1,
    caractérisé en ce que le support d'empilage principal présente une table de dépose formant au moins partiellement sa face supérieure, qui se déplace, pendant et/ou après l'étape f), par rapport à la partie restante du support d'empilage principal dans une direction sensiblement opposée au mouvement de retrait du support d'empilage auxiliaire.
  3. Procédé selon la revendication 1,
    caractérisé en ce que le support d'empilage principal présente une bande transporteuse circulant sans fin dont le brin supérieur forme au moins partiellement la face supérieure du support d'empilage principal et se déplace, pendant et/ou après l'étape f), dans une direction sensiblement opposée au mouvement de retrait du support d'empilage auxiliaire.
  4. Procédé selon la revendication 1,
    caractérisé en ce que, pendant et/ou après l'étape f), sensiblement l'intégralité du support d'empilage principal (14) est déplacé dans une direction sensiblement opposée au mouvement de retrait (R) du support d'empilage auxiliaire (26).
  5. Procédé selon au moins l'une des revendications précédentes,
    caractérisé en ce que, lors de l'étape f), le mouvement d'avance (H), sensiblement opposé au mouvement de retrait (R) du support d'empilage auxiliaire (26), d'au moins la partie du support d'empilage principal (14) formant au moins partiellement la face supérieure, n'est initié qu'une fois que le support d'empilage auxiliaire (26) a déjà exécuté son mouvement de retrait (R) d'une distance prédéterminable.
  6. Procédé selon au moins l'une des revendications précédentes,
    dans lequel, avant l'étape a), est posé sur le support d'empilage principal (14) un élément de réception mobile (12), de préférence une palette, pour la réception et le transport de la pile (30).
  7. Procédé selon au moins l'une des revendications précédentes,
    dans lequel, après l'étape d) et avant l'étape e) ou lors de l'étape e), est posé sur le support d'empilage principal (14) un élément de réception mobile (12), de préférence une palette, pour la réception et le transport de la pile (30).
  8. Procédé selon au moins l'une des revendications précédentes,
    caractérisé en ce que, pendant et/ou après l'étape f), au moins la partie du support d'empilage principal (14) formant au moins partiellement la face supérieure exécute, outre son mouvement d'avance (H) sensiblement opposé au mouvement de retrait (R) du support d'empilage auxiliaire (26), un mouvement ascendant (V) de manière sensiblement simultanée.
  9. Procédé selon la revendication 8,
    caractérisé en ce que sensiblement l'intégralité du support d'empilage principal (14) exécute le mouvement ascendant.
  10. Procédé selon la revendication 8 ou 9,
    caractérisé en ce que le mouvement ascendant supplémentaire s'effectue au moins jusqu'à ce que la face supérieure du support d'empilage principal atteigne sensiblement le niveau de la face supérieure du support d'empilage auxiliaire.
  11. Procédé selon la revendication 7, ainsi que selon la revendication 8 ou 9,
    caractérisé en ce que le mouvement ascendant supplémentaire (V) s'effectue au moins jusqu'à ce que la face supérieure de l'élément de réception (12) situé sur le support d'empilage principal (14) atteigne sensiblement le niveau de la face supérieure du support d'empilage auxiliaire (26).
  12. Procédé selon au moins l'une des revendications précédentes,
    dans lequel au moins un moyen de séparation (24), de préférence au moins un sabot de séparation, est introduit, entre les étapes a) et b), une fois atteint le nombre prédéterminable de pièces plates (10) empilées sur le support d'empilage principal (14), au-dessus du niveau du support d'empilage auxiliaire (26) entre la pièce plate la plus supérieure du nombre prédéterminable et la pièce plate la plus inférieure des pièces plates empilées par-dessus, et après l'étape f), une fois le support d'empilage auxiliaire (26) complètement extrait de la zone d'empilage (2), est retiré de la zone d'empilage (2),
    caractérisé en ce qu'après l'étape f), au moins la partie du support d'empilage principal (14) formant au moins partiellement la face supérieure exécute son mouvement d'avance (H) sensiblement opposé au mouvement de retrait (R) du support d'empilage auxiliaire (26) alors que le moyen de séparation (24) se trouve encore dans la zone d'empilage.
  13. Procédé selon la revendication 12,
    caractérisé en ce qu'après l'étape f), au moins la partie du support d'empilage principal (14) formant au moins partiellement la face supérieure exécute son mouvement d'avance (H) sensiblement opposé au mouvement de retrait (R) du support d'empilage auxiliaire (26), au moins jusqu'à ce que le moyen de séparation (24) ait été retiré de la zone d'empilage.
  14. Procédé selon l'une des revendications 8 à 11, ainsi que selon la revendication 12 ou 13,
    caractérisé en ce qu'au moins la partie du support d'empilage principal (14) formant au moins partiellement la face supérieure exécute le mouvement ascendant supplémentaire (V).
  15. Procédé selon au moins l'une des revendications précédentes,
    dans lequel le support d'empilage principal (14) et/ou le support d'empilage auxiliaire (26) sont respectivement abaissés en fonction de la hauteur croissante de la pile (partielle) (30 ; 30a) en formation sur celui-ci et, à l'état vide, sont de nouveau relevés.
  16. Dispositif pour la formation de piles de pièces plates (10), en particulier de feuilles telles que, par exemple, des feuilles de papier, dans une zone d'empilage (2) par un transport sensiblement ininterrompu des pièces plates (10) vers la zone d'empilage (2), comprenant un support d'empilage principal (14) sur lequel peuvent être empilées les pièces plates (10), et un support d'empilage auxiliaire (26) qui, une fois atteint un nombre prédéterminable de pièces plates (10) empilées sur le support d'empilage principal (14), peut être amené dans la zone d'empilage (2) au-dessus de la pile (30) terminée formée par le nombre prédéterminable de pièces plates (10) sur le support d'empilage principal (14), pour recevoir en empilage les pièces plates (10) suivantes, le support d'empilage principal (14) étant prévu pour l'enlèvement de la pile (30) finie et pouvant, à l'état vide, être amené sous le support d'empilage auxiliaire (26) se trouvant dans la zone d'empilage (2), et le support d'empilage auxiliaire (26) pouvant être retiré de la zone d'empilage (2) pour le transfert, sur le support d'empilage principal (14), de la pile partielle (30a) formée jusqu'alors sur le support d'empilage auxiliaire (26),
    caractérisé en ce qu'au moins une partie du support d'empilage principal (14) formant au moins partiellement la face supérieure est conçue mobile au moins dans une direction au moins sensiblement opposée à la direction du mouvement de retrait (R) du support d'empilage auxiliaire, et en ce qu'est prévu un dispositif de commande (40) qui commande le mouvement d'au moins la partie du support d'empilage principal (14) formant au moins partiellement la face supérieure dans son état transféré sous le support d'empilage auxiliaire (26) de telle sorte qu'au moins la partie du support d'empilage principal (14) formant au moins partiellement la face supérieure exécute un mouvement d'avance (H) dans une direction sensiblement opposée au mouvement de retrait (R) du support d'empilage auxiliaire pour pouvoir entraîner la pile partielle (30a) de manière correspondante par ce mouvement d'avance (H), pendant que le support d'empilage auxiliaire (26) est retiré de la zone d'empilage (2) et/ou une fois que le support d'empilage auxiliaire (26) a été retiré de la zone d'empilage (2).
  17. Dispositif selon la revendication 16,
    caractérisé en ce que le support d'empilage principal présente une table de dépose formant au moins partiellement sa face supérieure, qui est déplaçable par rapport à la partie restante du support d'empilage principal au moins dans une direction sensiblement opposée à la direction du mouvement de retrait du support d'empilage auxiliaire.
  18. Dispositif selon la revendication 16,
    caractérisé en ce que le support d'empilage principal présente une bande transporteuse circulant sans fin dont le brin supérieur forme au moins partiellement la face supérieure du support d'empilage principal et se déplace dans une direction sensiblement opposée au mouvement de retrait du support d'empilage auxiliaire.
  19. Dispositif selon la revendication 16,
    caractérisé en ce que sensiblement l'intégralité du support d'empilage principal (14) est déplacé au moins dans une direction sensiblement opposée à la direction du mouvement de retrait (R) du support d'empilage auxiliaire (26).
  20. Dispositif selon au moins l'une des revendications 16 à 19,
    caractérisé en ce que le dispositif de commande (40) ne déclenche le mouvement d'avance (H), sensiblement opposé au mouvement de retrait (12) du support d'empilage auxiliaire (26), d'au moins la partie du support d'empilage principal (14) formant au moins partiellement la face supérieure qu'une fois que le support d'empilage auxiliaire (26) a déjà effectué son mouvement de retrait (R) d'une distance prédéterminable.
  21. Dispositif selon au moins l'une des revendications 16 à 20,
    dans lequel le support d'empilage principal (14) est conçu, sur sa face supérieure, pour la pose d'un élément de réception (12) mobile, de préférence une palette, en vue de la réception et du transport de la pile (30).
  22. Dispositif selon au moins l'une des revendications 16 à 21,
    caractérisé en ce qu'au moins la partie du support d'empilage principal (14) formant au moins partiellement la face supérieure est conçue mobile vers le haut et en ce que le dispositif de commande (40) commande le mouvement ascendant (V) d'au moins la partie du support d'empilage principal (14) formant au moins partiellement la face supérieure de telle sorte que son mouvement ascendant (V) s'effectue de manière sensiblement simultanée avec le mouvement d'avance (H) sensiblement opposé au mouvement de retrait (R) du support d'empilage auxiliaire (26).
  23. Dispositif selon la revendication 22,
    caractérisé en ce que sensiblement l'intégralité du support d'empilage principal est monté mobile vers le haut.
  24. Dispositif selon la revendication 22 ou 23,
    caractérisé en ce que le dispositif de commande commande le mouvement ascendant de façon que celui-ci s'effectue au moins jusqu'à ce que la face supérieure du support d'empilage principal atteigne sensiblement le niveau de la face supérieure du support d'empilage auxiliaire.
  25. Dispositif selon la revendication 21, ainsi que selon la revendication 22 ou 23, caractérisé en ce que le dispositif de commande (40) commande le mouvement ascendant (V) de façon que celui-ci s'effectue au moins jusqu'à ce que la face supérieure de l'élément de réception (12) situé sur le support d'empilage principal (14) atteigne sensiblement le niveau de la face supérieure du support d'empilage auxiliaire (26).
  26. Dispositif selon au moins l'une des revendications 16 à 25, comprenant au moins un moyen de séparation (24), de préférence au moins un sabot de séparation qui, une fois atteint le nombre prédéterminable de pièces plates (10) empilées sur le support d'empilage principal (14), peut être introduit au-dessus du niveau du support d'empilage auxiliaire (26) entre la pièce plate la plus supérieure du nombre prédéterminable et la pièce plate la plus inférieure des pièces plates empilées par-dessus, et une fois le support d'empilage auxiliaire (26) complètement retiré de la zone d'empilage (2), peut, de nouveau, être retiré de la zone d'empilage (2),
    caractérisé en ce que le dispositif de commande (40) commande le mouvement d'au moins la partie du support d'empilage principal (14) formant au moins partiellement la face supérieure de telle sorte que celui-ci exécute son mouvement d'avance (H) sensiblement opposé au mouvement de retrait (R) du support d'empilage auxiliaire (26), alors que le moyen de séparation (24) se trouve encore dans la zone d'empilage (2).
  27. Dispositif selon la revendication 26,
    caractérisé en ce que le dispositif de commande (40) commande le mouvement d'au moins la partie du support d'empilage principal (14) formant au moins partiellement la face supérieure de telle sorte que celui-ci exécute son mouvement d'avance (H) sensiblement opposé au mouvement de retrait (R) du support d'empilage auxiliaire (26) au moins jusqu'à ce que le moyen de séparation (24) ait été retiré de la zone d'empilage (2).
  28. Dispositif selon au moins l'une des revendications 16 à 27, dans lequel le support d'empilage principal (14) est monté sur un bâti (80) de façon mobile vers le haut et vers le bas, de préférence sensiblement verticalement.
  29. Dispositif selon la revendication 28,
    caractérisé en ce que le dispositif de commande (40) commande le mouvement ascendant et descendant du support d'empilage principal (14) de façon telle que le support d'empilage principal (14) est abaissé en fonction de la hauteur croissante de la pile (30) se formant sur celui-ci et de nouveau relevé à l'état vide.
  30. Dispositif selon au moins l'une des revendications 16 à 29, dans lequel le support d'empilage auxiliaire (26) est monté sur un bâti (80) de manière à pouvoir être aussi bien engagé dans la zone d'empilage (2) et dégagé hors de celle-ci, que mobile vers le haut et vers le bas, de préférence sensiblement verticalement.
  31. Dispositif selon la revendication 30,
    caractérisé en ce que le dispositif de commande (40) commande le mouvement ascendant et descendant du support d'empilage auxiliaire (26) de telle sorte que le support d'empilage auxiliaire (26), dans sa position engagée dans la zone d'empilage (2), est abaissé en fonction de la hauteur croissante de la pile partielle (30a) en formation sur celui-ci et, dans sa position dégagée de la zone d'empilage (2) est de nouveau relevé à l'état vide.
  32. Dispositif selon l'une des revendications 22 à 25 ainsi que, le cas échéant, au moins l'une des revendications 16 à 21 et 26 à 31,
    caractérisé en ce que le dispositif de commande (40) commande le mouvement ascendant (V) de manière sensiblement simultanée avec le mouvement d'avance (H) sensiblement opposé au mouvement de retrait (R) du support d'empilage auxiliaire (26).
  33. Dispositif selon la revendication 32, caractérisé en ce que sont prévus pour le mouvement d'avance (H) sensiblement opposé au mouvement de retrait (R) du support d'empilage auxiliaire (26) un premier moyen d'entraînement (62, 68) et pour le mouvement ascendant (V) un second moyen d'entraînement (56), et en ce que le dispositif de commande (40) commande les premier et second moyens d'entraînement (62, 68, 56).
  34. Dispositif selon la revendication 32,
    caractérisé en ce que le dispositif de commande présente au moins un guidage à coulisse pour le guidage mécanique d'au moins la partie du support d'empilage principal formant au moins partiellement la face supérieure.
EP07011236A 2006-06-19 2007-06-08 Procédé et dispositif destinés à la formation de piles de pièces plates Active EP1870361B1 (fr)

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US7651089B2 (en) 2010-01-26
CN101130412A (zh) 2008-02-27
AU2007202767A1 (en) 2008-01-10
CA2591453A1 (fr) 2007-12-19
EP1870361A1 (fr) 2007-12-26
CN101130412B (zh) 2011-12-21
DE102006028381A1 (de) 2007-12-20
RU2007122904A (ru) 2008-12-27
BRPI0705241A2 (pt) 2009-07-14
ATE519704T1 (de) 2011-08-15
ES2366656T3 (es) 2011-10-24
JP2008001525A (ja) 2008-01-10
US20080006981A1 (en) 2008-01-10

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