EP1484270B1 - Device and method for gentle and wasteless further treatment of a remaining ream - Google Patents
Device and method for gentle and wasteless further treatment of a remaining ream Download PDFInfo
- Publication number
- EP1484270B1 EP1484270B1 EP04020937A EP04020937A EP1484270B1 EP 1484270 B1 EP1484270 B1 EP 1484270B1 EP 04020937 A EP04020937 A EP 04020937A EP 04020937 A EP04020937 A EP 04020937A EP 1484270 B1 EP1484270 B1 EP 1484270B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stack
- ream
- residual
- gripper
- sheets
- 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.)
- Expired - Lifetime
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Classifications
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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
- B65H3/00—Separating articles from piles
- B65H3/32—Separating articles from piles by elements, e.g. fingers, plates, rollers, inserted or traversed between articles to be separated and remainder of the pile
- B65H3/322—Separating articles from piles by elements, e.g. fingers, plates, rollers, inserted or traversed between articles to be separated and remainder of the pile for separating a part of the pile, i.e. several articles at once
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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
- B65H83/00—Combinations of piling and depiling operations, e.g. performed simultaneously, of interest apart from the single operation of piling or depiling as such
- B65H83/02—Combinations of piling and depiling operations, e.g. performed simultaneously, of interest apart from the single operation of piling or depiling as such performed on the same pile or stack
- B65H83/025—Combinations of piling and depiling operations, e.g. performed simultaneously, of interest apart from the single operation of piling or depiling as such performed on the same pile or stack onto and from the same side of the pile or stack
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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
- 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
- B65H2301/4223—Pressing piles
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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
- 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
- B65H2301/4224—Gripping piles, sets or stacks of articles
- B65H2301/42242—Gripping piles, sets or stacks of articles by acting on the outermost articles of the pile for clamping the 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
- B65H2405/00—Parts for holding the handled material
- B65H2405/50—Gripping means
- B65H2405/52—Gripping means reciprocating
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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
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/30—Numbers, e.g. of windings or rotations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2601/00—Problem to be solved or advantage achieved
- B65H2601/50—Diminishing, minimizing or reducing
- B65H2601/51—Diminishing, minimizing or reducing entities relating to handled material
- B65H2601/511—Waste of handled material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/18—Form of handled article or web
- B65H2701/182—Piled package
- B65H2701/1826—Arrangement of sheets
Definitions
- the invention relates to a device and method for stacking, i. for dividing a stack of leaves in Giant given number of sheets.
- stacking and palletizing of these cut sheets often occurs after the production of cut sheets.
- individual giant In the further processing of these single sheets then individual giant must be generated, containing the most possible number of sheets a predetermined number of sheets. Typical giant sizes are, for example, in the range of 50 to 500 leaves.
- paper of certain quality (usually in terms of weight per square meter of paper) has a uniform thickness. Paper stacks of the same quality differ in height from each other only if there are air gaps between individual sheets. Therefore, it is known for stacking of stacks of paper to compress the paper on one side with a certain surface pressure, which is reliably the same stack height with the same number of sheets and paper quality. To discard a Rieses predetermined number of sheets is then inserted in the predetermined number of sheets corresponding height of the upper edge of the paper stack in the paper stack and thus separated the Ries lying predetermined number of sheets from the remaining remaining stack.
- this method has the disadvantage that it is necessary for the correct determination of the height of the paper stack on the one hand to bring a high surface pressure in the paper stack at the puncture, on the other hand with the increasing surface pressure but the risk of piercing at least one of the leaves in the puncture area to damage.
- the GB 772,679 describes the processing of sheet stacks in a printing press where, when a stack is emptied, a disk is placed under the old stack, a new stack is placed underneath, and then the disk is removed.
- the DE 26 39 676 A1 describes a method and a device for feeding a round-pile sheet feeder, which is described in that when a pallet becomes empty, a signal is triggered when there is no complete stack of sheets on the pallet. Thereafter, a pallet change takes place. In this device, no exactly measured stack are formed, but the final state is a scaly sheet position.
- the US 4,955,854 describes a device for pocketing a stack into a number of individual stacks, in which the plowing is continued until the entire stack is completely emptied, after which a stack change takes place.
- the CH 675 995 A5 describes a device for unstacking a pallet loaded with a stack of paper sheets and also deals with the separation of the lowermost, last partial stack, that is with the problem of the residual giant with respect to the feeding of the last stack for removal. It does not matter what number of leaves the last sub-stack contains. Further use of this sub-stack is not addressed.
- the object of the invention is therefore to provide a method and an apparatus for destacking, with the rest giant, gently and waste be further processed, and this processing is included in the stack change. This object is solved by the claims 1, 10 and 11.
- a ream ultimately remains as the remaining stack whose number of leaves is less than the number of leaves which a ream to be discarded should contain. This is due to the fact that the stack of the leaves is not necessarily exactly a multiple of the predetermined Number of leaves of a Ries to be discarded contains. On the other hand, it can not be ruled out that all discarded giants contain exactly the desired number of leaves, so that slight deviations in the number of leaves can result upwards or downwards, whereby the remaining of a residual giant with a number of leaves that is less than that given number of sheets, even if the original stack contains an integer multiple of the desired number of sheets itself.
- the residue is gripped by the gripping device like a complete ream.
- This gripping of the residual giant by the gripping device can be carried out, for example, according to the method described below, wherein a piercing of a sword takes place, but this piercing then takes place at the level of the lowermost sheet of the paper stack, regardless of the height of the remaining paper stack.
- this ream can be moved away from the stack of leaves. Instead of the now completely removed stack of sheets, a new stack of sheets is provided at that location. Then the Restries is moved to the new pile of leaves and stored there.
- the new stack is held during the transfer of the residual ream advantageously by means of a pressing or clamping means such that in particular the top, but also the underlying leaves of the stack are not moved in the Umsetzvorgang.
- the sword of the gripper can be moved into a position in which it is above the paper stack and then passes through vertical down procedure in contact with the top of the stack and thus ensures a correspondingly sufficient surface pressure in the new stack of sheets.
- the Restries is temporarily stored on the forwarding agent, which also serves the further transport of complete giant. Removing the rest giant from the deployment location and dropping it At a storage location corresponds to the travel path in the culling and method of mecanicschondernden giant.
- the forwarding agent also serves the further transport of complete giant.
- a ream is separated from the stack, which consists of the Restries and leaves the new stack.
- the deposition of the ream on the further transport means a flushing or smoothing of the ream.
- This flush is used to compensate for vertical offset between the leaves of the residual giant and the sorted leaves of the new stack.
- the bumping can take place at least in the removal direction of the ream from the stack of leaves.
- the flushing also takes place in this transversal direction, ie transversely to the conveying direction of the ream from the stack of leaves.
- the gripping and removal of a ream which is composed of a Restries and a number of sheets from the new stack, can be done completely according to the inventive method for segregating a ream of predetermined number of sheets from a stack of sheets or any other, according to suitable methods ,
- a stack of sheets is divided into Einzelriese given number of sheets, including a gripper is provided.
- the gripper has a first pressure pad for generating a predeterminable surface pressure in the stack to be split. He also has a sword for piercing the stack to be split at a predetermined height from the top of the stack.
- a gripping tongs for handling the segregated ream is provided.
- the gripper consists on the one hand of a fork as a lower, insertable into the stack part and the other from a pliers shell for clamping holding the ream between the fork and pliers shell.
- a second Anpresskissen is provided, which serves to generate a pressure in the stack ashamed former on the attack side, ie the piercing, side facing away from the stack.
- the sword is the Anschnäbeln, so the piercing with a small - for example, in the range of less than 3mm lying - penetration depth of the sword tip in the stack.
- a pull bar is provided on the gripper, wherein the pull bar designed vertically movable and beyond is designed so that it comes into contact with the side of the stack of sheets facing the gripper at the latest when the paper stack is angeschnäbelt by the sword.
- the pull bar on its side facing the stack, the front has a friction surface.
- the friction surface may be formed in particular in the form of a rubber coating or a rubberized layer.
- the pull bar is used by a vertically upward moving away movement when the pull bar is in lateral contact with the paper stack to pull the ream secreted by the sword upwards.
- the pull bar of the discharge of the weight of the paper of the sword of the overlying ream serves.
- the corresponding pressure pad is removed from the paper stack - upwards.
- a second Anpresskissen ensures that the unilaterally raised leaves from the stack can not slip backwards.
- the pulling up of the ream to be discarded by the pull bar makes it possible to insert the sword over the entire length into the paper stack almost without load.
- the sword can then serve to reliably push up the ream and serve the distance between the rejected ream and the now remaining upper edge of the rest of the pile.
- a sufficient gap for the insertion of a fork of a gripping tongs is created.
- the fork is preferably used to segregate and gripping the Ries above the sword.
- the sword is arranged vertically movable relative to the fork for this purpose.
- Embodiments are preferred in which both the piercing or biting of the paper stack by the sword, as well as the insertion of the sword in the paper stack and the retraction of the fork in the space created by the sword in a horizontal movement takes place at right angles to the gripper facing side of the stack is aligned.
- the sword and fork are independently movable horizontally.
- the sword may consist of a forward projecting, facing the stack flat blade.
- the fork is preferably designed so that projecting tines are provided on the stack.
- a defined pressure is generated by means of a first pressure pad on the front upper side of the stack, which faces the gripper.
- a second Anpresskissens is also on the rear upper side of the stack, which faces away from the gripper, a defined pressure in the stack produced.
- the gripper is moved to its working position with respect to the stack. It is located in close proximity to the front of the stack facing it.
- the sword of the gripper At a distance from the top of the stack is the sword of the gripper. The distance is determined so that it corresponds to the stack height of the predetermined number of sheets of the sheet type contained in the stack at the pressure generated by the first Anpresskissen. The sword then performs a horizontal feed motion at this distance from the top of the stack.
- the length of the vertical feed movement is determined so that the sword pierces the stack, ie that the sword penetrates only slightly into the stack. After this first slight prick of the paper stack at the point where the stack is divided into the remainder stack and the ream to be discarded, the first pressure pad is lifted off the stack. On the front of the stack then no more pressure prevails in the stack, which is beyond the burden of the own weight of the leaves of the discarded Giant goes out. Only after this relief, the sword is completely inserted into the stack. Subsequently, by a vertical lifting movement of the sword, the rejected ream of predetermined number of sheets lying above the sword is raised.
- a Ziehelf is brought into contact with the gripper facing the front of the paper stack after the beaking of the paper stack by the sword.
- the pull bar is to be regarded as part of the gripper.
- the pull bar is then on the side of the paper stack, with a defined contact force can be specified.
- the contact force is chosen so that damage to the leaves does not occur by pressing in at the contact point.
- This measure is used for further weight relief before the complete insertion of the sword in the paper stack at the specified location. It is sufficient if at least the majority of the leaves above the sword is raised. A certain residual part of the Ries to be eliminated can continue with his Resting weight on the sword. For this reason, it is advantageous if the pull bar is moved so that it only comes into contact with the stack above the sword.
- the sword remains in abutment with the remaining stack until the scrap to be discarded is removed from the stack. It is particularly advantageous if the reaming nurseimide is seen from the attack side of the gripper forth from the stack moved away to the rear. It is also advantageous if the stack of sheets is provided on a lifting device.
- the lifting device is preferably designed so that after each removal of a ream, a lifting of the paper stack takes place, wherein the lifting takes place just to the extent that corresponds to the height of the rejected Rieses. This ensures that the top edge of the paper stack is at the same height before the beginning of each throwing out a ream from the paper stack.
- the gripper can be designed so that it is adapted to compensate for the decreasing height of the paper stack in the course of sequentially separating giants from the stack. This can be done in particular by appropriate traversing devices.
- the Fig. 1 to 6 show a device according to the invention for dividing a stack of sheets into a ream having a predetermined number of sheets and a remainder stack.
- each shown a side view and a plan view of the device.
- the Fig. 7 to 17 also show such a device, but with respect to the device according to the Fig. 1 to 6 is supplemented by device components for the treatment of residual giants.
- the Fig. 18 to 25 is another embodiment for the treatment of the residual giant shown in different phases.
- the Fig. 7 to 25 in each case only either the side view or the top view are shown.
- the device consists essentially of the same components as the device according to the Fig. 1 to 6 ,
- a device for destacking is shown under the disposal of a ream presettable number of sheets from a stack of sheets.
- the device consists of a multiple-part gripper 30.
- the gripper 30 is actually more of a gripping device and has many partially independently movable in at least one traversing subunits.
- the common base of the subunits of the gripper 30 forms the carrier 31, to which all subunits of the gripper 30 are attached and with respect to which they are partially movable in at least one direction.
- the stack 83 of sheets is provided.
- the gripper 30 is formed from a carrier 31, protrude from the various parts. First of all, that's the first one Anpreßkissen 32 provided that is arranged vertically movable with the top of the stack of sheets on the front attack side of the gripper 30 for this purpose.
- the second Anpreßkissen 33 is provided in the region of the opposite, rear end of the stack 83. This is also held at least vertically movable on the support 31, so that regardless of the position of the upper edge of the stack 83 of sheets, the Anpreßkissen can be brought into contact with the top of the leaves.
- a conveyor belt is arranged on the rear, the attack side of the gripper 30 side facing away, which serves to receive the rejected giant.
- the sword 35 punctures the predetermined height into the stack of leaves by the number of leaves which a ream is to contain.
- Fig. 1 It is shown how the sword 35 is with its corresponding actuator in a position immediately in front of the front edge of the stack 83. Shortly before the front edge of the stack 83 and in the vertical slightly above the sword 35, the pull bar 39 extends upward.
- the pull bar 39 has a friction surface 38, which faces the stack 83.
- the friction surface 38 may have both a serrated profile, as well as be made by correspondingly soft material, such as rubber, so as to allow a strong rubbing conditioning of the pull bar on the front edge of the stack 83 above the sword 35.
- the pull bar 39 is vertically movable relative to the stack 83.
- the gripping tongs 40 are arranged on the carrier 31.
- the gripper 40 consists of two relatively vertically movable parts.
- the fork 41 which can retract into a gap between the Constellden ream 90 and the remaining remainder stack 92 and the pliers shell 42.
- the fork 41 two prongs 43, one prong 43 can on each side of the sword 35 in the Stack to be retracted.
- a hold-down 45 is also formed.
- the hold-down 45 is likewise arranged on the carrier 31 and can be retracted by a horizontal feed movement with its two contact surfaces 46 into the intermediate space between the ream 90 to be discarded and the remaining remainder stack 92.
- the contact surfaces 46 engage in each case between the sword and a prong 43 of the fork 41 in the intermediate space, as can be seen from the lower, drawn as a top half of the picture.
- the first and second nip pads 32 and 33 are brought downwardly in vertical abutment with the top edge 84 of the stack 83.
- the sword 35 is located with its sword tip immediately in front of the facing front of the stack 83. The sword is at such a vertical distance from the top edge 84 of the stack that in height above the sword is the appropriate number of leaves, which forms a ream to be discarded.
- the lower edge of the pull bar 39 is slightly above the sword 35.
- the hold-down 45 In a corresponding vertical position, but horizontally further away from the front of the stack is the hold-down 45 with its contact surfaces 46th and the fork 41 of the gripping tongs 40 with the prongs 43 in engagement.
- the sword 35 stings the stack 83.
- the sword with its sword tip penetrates only slightly, ie usually only a few millimeters, preferably for example, about 2 to 3mm in the stack. This situation is in the Fig. 2 shown.
- opposite to the Fig. 1 only changed that now also the pull bar 39 is with its friction surface 38 in abutment with the front edge of the ream 90.
- the stack 83 is split into the scrap 90 to be discarded and a remaining stack 92 remaining.
- the first Anpresskissen 32 is moved away vertically upwards. Thereby, the pressure generated by the first Anpresskissen 32 at the front of the stack is released. Furthermore, the pull bar 39 located in abutment with the front of the stack is moved vertically upwards. By frictionally applied to the pull bar system at least a portion of the leaves of the ream 90, these are raised at the front of the stack by the movement of the pull bar 39 and are no longer in circulation with the remaining remaining part of the ream and the remainder of stack 92. Dies only applies to the front of the sheets, as the surface pressure is still generated at the back of the stack.
- the second Anpresskissen 33 is still in proper contact with the stack 83, consisting of the remaining stack 92 and the Salgeden ream 90. At the same time is thereby prevented that the leaves of the ream 90 slip against each other by the one-sided lifting and thereby the alignment of the sheets on top of each other, as it is originally given in the stack, is resolved.
- the sword can now completely pierce the stack.
- air outlet nozzles 37 are provided on the sword, in particular at the tip of the blade of the sword, is blown through the air between the bottom sheet of Medicare Congressden ream and the top sheet of the remaining rest stack 92. In this way, a slight air cushion can be generated, so that the sword 35 can penetrate into the stack 83 with almost no friction and thus further defines the separation between the ream 90 to be discarded and the remaining stack 92 remaining. Following this, the ream 90 is separated from the remaining stack 92 by horizontal movement of the sword upwards at the insertion side and a gap 86 is created. The situation reached after these processes is in the Fig. 3 shown.
- the grasping forceps 40 are initially moved horizontally into the engagement position on the stack 83.
- the fork 41 with its prongs 43 penetrates into the intermediate space 86 between the residual stack 92 and the ream 90 to be discarded.
- the pliers upper part 42 is located in a position above the upper edge of the ream 90.
- the hold-down 45 is retracted with its contact surfaces in the intermediate space 86.
- the hold-down is first lowered by vertical method so far that it rests with a predetermined contact force on the upper edge of the remaining rest stack 92.
- the sword 35 is first moved by vertical lowering so far that the leaves of the ream 90 rest on the fork 41 of the grasping forceps 40.
- the sword 35 is pulled by horizontal process from the stack. It is now in a horizontal position in front of the front edge of the stack 83.
- the fork 41 is located immediately above the upper edge of the remaining stack 92 and the lower edge of the ridge 90 is only slightly removed from the upper edge of the remaining stack 92.
- the second pressure pad 33 is still resting on the stack 83, which is formed from the remaining stack 92 and the ream 90.
- the forceps upper part 42 is lowered so far by a vertical feed movement until it rests with defined contact force on the top of the ridge 90.
- the grasping forceps 40 opens and this can now again in their in the Fig. 1 shown starting position to be moved backwards. Also, the hold-down 45 can now be lifted from the front end of now the stack 83 forming residual stack 92 and then back into the in the Fig. 1 shown position - in the picture to the right, so seen in the stacking direction to the front - are driven away. The in the Fig. 1 illustrated starting position is then achieved again by the first and second Anpresskissen 32 and 33 are brought into contact with the upper edge of the stack 83. In this way, the exact position of the upper edge with respect to the stationary carrier 31 can be determined.
- the sword 35, the hold-down 45 and the grasping forceps 40 must be aligned vertically with respect to the upper edge of the stack 83.
- the detection of the position of the upper edge can be carried out so that the position of the first Anpreßkissens 32 is detected and the other parts of the gripper are aligned vertically with respect to this position.
- the place of delivery 80 of the stack 83 is on a lifting table. By lifting the lift table by the amount of height of a ream to be eliminated ensures that the vertical position of the top of the stack remains constant.
- the Fig. 7 to 17 show various snapshots from a process for the treatment of residual giants 91, which in particular in connection with an apparatus and a method for dividing a stack of sheets into giants of predetermined number of sheets as shown in FIGS Fig. 1 to 6 has been shown can be used. It is the implementation of a method according to the Fig. 7 to 17 with the procedure described below is not necessarily to a method as in relation to the Fig. 1 to 6 has been described, or a Entstaplervoriques, as in the Fig. 1 to 6 has been shown bound. However, in the example set forth below, it is assumed that a destacking apparatus according to the Fig. 1 to 6 is available.
- the in the Fig. 7 The situation shown corresponds approximately to the situation, as in the Fig. 5 is shown.
- One essential difference is that the ream held in gripping tongs 40 is a residue 91.
- a residue 91 differs from the other giants to be discarded in that it no longer contains the desired, predetermined number of leaves to contain a ream 90 to be discarded.
- the situation differs Fig. 7 of the Fig. 5 to the effect that the sword 35 has been inserted below the last sheet of the stack 83, which at the beginning of the puncturing process consisted only of the remaining ream. Otherwise, the process of grasping the residual giant 92 need not be different from grasping another ream 90.
- the residue was grasped just like a complete ream by means of the gripping tongs and is therefore manipulatable.
- the residue ridge 92 is pushed onto the conveyor belt 85.
- the conveyor belt moves at its conveying speed - this corresponds to the feed speed of the gripping tongs 40 - on. It takes up the Restries 92 at least partially.
- This situation is in the Fig. 8 shown. Will this be in the Fig.
- the sword 35 is in a position outside of the new stack 93. Now restrained in the gripping tongs 40 Restries 91 is stacked on the new stack 93. This stacking process is in the in Fig. 11 shown snapshot partially completed.
- the gripper 40 is moved horizontally forward in the direction of the new stack 93. For this purpose, in order to support the Umstapelvorgangs and to avoid damage to the paper on the surface, a simultaneous process of the conveyor belt 85 in the appropriate direction.
- the movement of the conveyor belt 85 preferably takes place in synchronism with the speed of the gripping tongs 40, so that there is no relative movement of the surface of the gripper Conveyor belt 85 is given to the lowermost sheet of the ream 90 to be discarded or the residual giant 91.
- the gripper 40 is opened. This is done in particular by the fact that the fork 41 of the gripper 40 is moved vertically downwards and thus the upper fork edge passes below the level of the sword 35. Subsequently, the gripper 40 is moved to a position outside the range of the new stack 93.
- the Restries is now on the one hand on the new stack 93 and on the other hand slightly on the sword 35 on.
- the bearing force is optionally reduced by the injected air at the outlet nozzles of the sword blown air.
- the sword is moved away to the front, ie his sword leading edge passes outside the engagement area with the new stack 93 and the Restries 91. Now so is the Restries that can distinguish it from the rest of the new stack 93 in the Fig. 12 and 13 hatched on the new stack 93 provided at the point of delivery 80.
- Fig. 16 illustrated situation.
- the in the Fig. 16 presented as a side view situation is in the Fig. 17 shown as a supervisor.
- the Ries to be discarded was placed on the conveyor belt 85.
- the now open grasping forceps 40 is moved back toward its starting position to the front end of the stack 83 back. This movement takes place by a method along the carrier 31.
- the leading edge of the ream 90 comes into abutment with the stop bar 60, which was retracted into the travel path of the ream 90.
- this stop bar 60 may be part of a further gripping device 62, which grips the ream 90 and further manipulated.
- a ream 90 is only required if this ream consists of two sub-giants, which originally come from different stacks of paper. Moreover, according to the procedure, as it is based on the Fig. 1 to 6 ensures that the alignment of the sheets to each other, as originally provided in the stack 83, is maintained throughout the transfer and unstacking.
- the Fig. 18 to 25 show an alternative embodiment of a method for the treatment of Restriesen 91.
- the situation corresponds to the Fig. 18 the situation according to the Fig. 7 , It is in the embodiment according to the Fig. 18 as a difference from the embodiment according to the Fig. 7 only no conveyor belt 85 given.
- the tasks of the Conveyor belt, in particular the interim holding the Restrieses 91 is taken over by a gripping device 62, as will be explained below.
- the Restries 91 is moved by means of the gripper 40 so that the first running away from the pallet 79 end of the Restrieses 91 a stop bar 60, which is part of the gripping device 62 reaches. Once this stop bar 60 has been reached, the conveying movement of the Restrieses 91 is interrupted. By means of a corresponding punch 63 of a gripping device 62, the remote from the gripping jaw 40 end of Restrieses 91 is also held as clamping, as the other end in the gripper 40 clamped between the fork 41 and upper tongs 42 is clamped. This situation is in the Fig. 19 shown. Now, as in the Fig.
- the Restries 91 holds, held at its two ends in each case by the gripping tongs 40 and by the gripping device 62, with slight deflection in its achieved position.
- the surface pressures in the gripping tongs and in the gripping device must be selected so that the paper does not slip out of the tongs due to its own gravity and falls away downwards. This is especially possible with light paper grades and with small paper sizes, for example paper sizes in the range of A4 or A3.
- Fig. 21 shows the situation in which a new stack 93 has been provided on a new pallet 79 at the place of delivery and has been moved so far upwards by means of the lifting table that the upper edge of the new stack 93 at the desired Position, just below the rest giant 91 comes to rest.
- the Fig. 21 corresponds to the situation, as in the Fig. 10 of the previous method is given.
- the transition from the situation according to the Fig. 11 to the situation according to Fig. 12 will be in transition between the Fig. 21 and the Fig. 22 according to the method now described the Restries 91 brought into a position above the new stack 93.
- the clamping position of the gripping tongs 40 facing away from the end of the residual giant 91 in the gripping device 62 is first released and then pulled over by the gripping device 40, the Restries on the new stack 93.
- a pressure in the new stack 93 is generated, which prevents vertical displacement of the leaves during this Umsetzdoch.
- the transition from the in Fig. 22 presented situation to the situation as in Fig. 23 is represented, corresponds to the processes in the transition between the situation in Fig. 12 and Fig. 13 , The Restries 91 is first stored on the sword 35, then the fork 41 of the grasping forceps 40 is moved out and then the sword 35 pulled out. Then the Restries 91 is as flush as possible on the new stack 93.
- the situation is presented as it presents itself when a ream 90 has been separated and grabbed by the new stack and the residue 91 deposited thereon.
- This can, for example, according to the in the Fig. 1 to 6 method described, wherein in the Fig. 24 the situation, like the one Fig. 5 corresponds, is shown in the drawing.
- the proportion of the residual giant 91 is shown by hatched representation of the residual giant.
- the non-hatched portion of the ream corresponds to the leaves of the new stack 93.
- the ream 90 was seized by the grasping forceps 40 and is held between fork 41 and pliers shell 42.
- the situation shown is pushed away by shifting the gripping tongs 40 over the remaining stack 92 away from the remainder stack 92 reaming out.
- the transport movement is initially interrupted and the end of the ream 90 facing away from the grasping forceps 40 in the gripping device 62 is clamped by lowering a corresponding ram.
- the gripping device 62 is an alternative manipulation unit to the conveyor belt 85, as shown in the Fig. 1 to 17 was drawn.
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Description
Die Erfindung betrifft eine Vorrichtung und Verfahren zum Abstapeln, d.h. zur Aufteilung eines Stapels von Blättern in Riese vorgegebener Blattzahl. Bei der Papierverarbeitung erfolgt häufig nach der Herstellung von Einzelblättern ein Stapeln und Palettieren dieser Einzelblätter. Bei der weiteren Verarbeitung dieser Einzelblätter müssen dann einzelne Riese erzeugt werden, die möglichst blattzahlgenau eine vorgegebene Anzahl von Blättern enthalten. Übliche Riesgrößen liegen dabei beispielsweise im Bereich von 50 bis 500 Blättern.The invention relates to a device and method for stacking, i. for dividing a stack of leaves in Giant given number of sheets. In paper processing, stacking and palletizing of these cut sheets often occurs after the production of cut sheets. In the further processing of these single sheets then individual giant must be generated, containing the most possible number of sheets a predetermined number of sheets. Typical giant sizes are, for example, in the range of 50 to 500 leaves.
Zur Bestimmung der Anzahl von Blättern in einem einzelnen Ries sind unterschiedliche Methoden bekannt. Zum einen kann man, wenn die Blattzahl der einzelnen Riese von vornherein bekannt ist, einzelne, über den Stapelrand hinausragende Markierungsstreifen beim Aufstapeln der Blätter an den entsprechenden Stellen einschießen. Dies ist zum einen aufwendig, da hierzu eine entsprechende Vorrichtung beim Aufstapeln vorhanden sein muß, andererseits ist es beim Aufstapeln der Blätter nicht immer bekannt, welche Anzahl von Blättern in den einzelnen vom Stapel herunterzunehmenden Riesen enthalten sein soll.Different methods are known for determining the number of leaves in a single ream. On the one hand, if the number of sheets of the individual giant is known from the outset, individual, beyond the stack edge projecting marker strips when stacking the leaves einschießen in the appropriate places. This is on the one hand expensive, since this requires a corresponding device when stacking, on the other hand, it is when stacking the leaves not always known what number of leaves should be included in each of the giants to be taken down from the pile.
Dabei ist es bekannt, daß Papier bestimmter Qualität (zumeist im Gewicht pro Quadratmeter Papier ausgedrückt) eine gleichmäßige Dicke aufweist. Papierstapel gleicher Qualität weichen in ihrer Höhe nur dann voneinander ab, wenn zwischen einzelnen Blättern Luftspalte vorhanden sind. Daher ist es zum Abstapeln von Stapeln von Papier bekannt, das Papier an einer Seite mit einer bestimmten Flächenpressung zusammenzudrücken, wodurch bei gleicher Blattzahl und Papierqualität zuverlässig gleiche Stapelhöhe vorliegt. Zum Aussondern eines Rieses vorgegebener Blattzahl wird dann in der der vorgegebenen Blattzahl entsprechenden Höhe von der Oberkante des Papierstapels in den Papierstapel eingestochen und somit das darüber liegende Ries vorgegebener Blattzahl von dem verbleibenden Reststapel getrennt.It is known that paper of certain quality (usually in terms of weight per square meter of paper) has a uniform thickness. Paper stacks of the same quality differ in height from each other only if there are air gaps between individual sheets. Therefore, it is known for stacking of stacks of paper to compress the paper on one side with a certain surface pressure, which is reliably the same stack height with the same number of sheets and paper quality. To discard a Rieses predetermined number of sheets is then inserted in the predetermined number of sheets corresponding height of the upper edge of the paper stack in the paper stack and thus separated the Ries lying predetermined number of sheets from the remaining remaining stack.
Diese Methode hat allerdings den Nachteil, dass es zur richtigen Festlegung der Höhe des Papierstapels einerseits notwendig ist, eine hohe Flächenpressung in den Papierstapel an der Einstichseite einzubringen, zum anderen mit der zunehmenden Flächenpressung aber die Gefahr besteht, beim Einstechen wenigstens eines der Blätter im Einstichbereich zu beschädigen. Hierbei zählen nicht nur Beschädigungen durch Verknicken des Papiers, wenn an der Einstichstelle anstelle des Zwischenraumes zwischen zwei Blättern ein Blatt getroffen wird, sondern auch, wenn die Oberfläche eines der Blätter, beispielsweise durch Wisch- oder Kratzspuren, in ihrer Qualität beeinträchtigt wird.However, this method has the disadvantage that it is necessary for the correct determination of the height of the paper stack on the one hand to bring a high surface pressure in the paper stack at the puncture, on the other hand with the increasing surface pressure but the risk of piercing at least one of the leaves in the puncture area to damage. Here, not only damages due to buckling of the paper count when a sheet is hit at the puncture site instead of the space between two sheets, but also when the surface of one of the sheets, for example by wiping or scratch marks, is impaired in their quality.
Die
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Aufgabe der Erfindung ist es daher, ein Verfahren und eine Vorrichtung zum Entstapeln zu schaffen, mit der Restriese, schonend und abfallles weiterverarbeitet werden, und diese Verarbeitung in den Stapelwechsel mit einbezogen ist. Diese Aufgabe wird durch die Ansprüche 1, 10 und 11 gelöst.The object of the invention is therefore to provide a method and an apparatus for destacking, with the rest giant, gently and waste be further processed, and this processing is included in the stack change. This object is solved by the
Soweit von einem Stapel von Blättern Riese von vorgegebener Blattzahl entfernt werden, so verbleibt letztendlich ein Ries als verbleibender Stapel zurück, dessen Blattzahl geringer ist als die Anzahl von Blättern, die ein auszusonderndes Ries enthalten soll. Dies ist zum einen dadurch bedingt, dass der Stapel von den Blättern nicht zwangsläufig genau ein Vielfaches der vorgegebenen Blattzahl eines auszusondernden Rieses enthält. Zum anderen ist es auch nicht auszuschließen, dass alle ausgesonderten Riese exakt die gewünschte Anzahl von Blättern enthalten, so dass sich geringfügige Abweichungen in der Blattzahl nach oben oder nach unten ergeben können, wodurch das Verbleiben eines Restrieses mit einer Blattzahl, die geringer ist als die vorgegebene Blattzahl, auch dann auftreten kann, wenn der ursprüngliche Stapel ein ganzzahliges Vielfaches der gewünschten Blattzahl selbst enthlalt.As far as a lot of given number of leaves are removed from a stack of leaves, a ream ultimately remains as the remaining stack whose number of leaves is less than the number of leaves which a ream to be discarded should contain. This is due to the fact that the stack of the leaves is not necessarily exactly a multiple of the predetermined Number of leaves of a Ries to be discarded contains. On the other hand, it can not be ruled out that all discarded giants contain exactly the desired number of leaves, so that slight deviations in the number of leaves can result upwards or downwards, whereby the remaining of a residual giant with a number of leaves that is less than that given number of sheets, even if the original stack contains an integer multiple of the desired number of sheets itself.
Es wird also ermöglicht, auch die in dem verbleibenden Restries enthaltenen Blätter auszunutzen, auch wenn darin nur noch eine Blattzahl vorhanden ist, die geringer ist als die vorgegebene Blattzahl, die ein auszusonderndes Ries umfassen soll. Gemäß der vorliegenden Erfindung wird das Restries wie ein vollständiges Ries von der Greifeinrichtung ergriffen. Dieses Ergreifen des Restrieses durch die Greifeinrichtung kann dabei beispielsweise gemäß dem im Folgenden beschriebenen Verfahren durchgeführt werden, wobei auch ein Einstechen eines Schwertes erfolgt, dieses Einstechen aber dann auf Höhe des untersten Blattes des Papierstapels erfolgt, ungeachtet von der Höhe des verbleibenden Papierstapels.It is thus possible to take advantage of the leaves contained in the remaining Restries, even if only a sheet number is present therein, which is less than the predetermined number of sheets, which should include a reaming auszusonderndes. According to the present invention, the residue is gripped by the gripping device like a complete ream. This gripping of the residual giant by the gripping device can be carried out, for example, according to the method described below, wherein a piercing of a sword takes place, but this piercing then takes place at the level of the lowermost sheet of the paper stack, regardless of the height of the remaining paper stack.
Nach dem Ergreifen des Restrieses kann dieses Ries vom Bereitstellungsort des Stapels von Blättern weggefahren werden. Anstelle des nunmehr vollständig entfernten Stapels von Blättern wird ein neuer Stapel von Blättern an diesem Bereitstellungsort bereitgestellt. Anschließend wird das Restries auf den neuen Stapel von Blättern verfahren und dort abgelegt.After grabbing the rest of the giant, this ream can be moved away from the stack of leaves. Instead of the now completely removed stack of sheets, a new stack of sheets is provided at that location. Then the Restries is moved to the new pile of leaves and stored there.
Der neue Stapel wird während des Überführens des Rest-Rieses vorteilhafter Weise mittels eines Anpress- oder Klemmmittels derart festgehalten, dass insbesondere die obersten, aber auch die darunter liegenden Blätter des Stapels, bei dem Umsetzvorgang nicht verschoben werden. Hierzu kann insbesondere das Schwert des Greifers in eine Stellung verfahren werden, in der es oberhalb des Papierstapels liegt und dann durch vertikales Verfahren nach unten in Anlage mit der Oberkante des Stapels gelangt und damit für eine entsprechend ausreichende Flächenpressung im neuen Stapel von Blättern sorgt.The new stack is held during the transfer of the residual ream advantageously by means of a pressing or clamping means such that in particular the top, but also the underlying leaves of the stack are not moved in the Umsetzvorgang. For this purpose, in particular, the sword of the gripper can be moved into a position in which it is above the paper stack and then passes through vertical down procedure in contact with the top of the stack and thus ensures a correspondingly sufficient surface pressure in the new stack of sheets.
Bevorzugt wird das Restries zwischenzeitlich auf dem Weitertransportmittel abgelegt, das auch dem Weitertransport vollständiger Riese dient. Das Entfernen des Restrieses von dem Bereitstellungsort und das Ablegen an einer Ablagestelle entspricht dabei auch dem Verfahrweg bei dem Aussondern und Verfahren der auszusondernden Riese. Sobald ein Restries auf dem Weitertransportmittel abgelegt wurde, erfolgt eine Unterbrechung der Förderbewegung des Weitertransportmittels. Die Unterbrechung dauert mindestens so lange, bis das Ries wieder von dem Weitertransportmittel entfernt worden ist.Preferably, the Restries is temporarily stored on the forwarding agent, which also serves the further transport of complete giant. Removing the rest giant from the deployment location and dropping it At a storage location corresponds to the travel path in the culling and method of auszuschondernden giant. Once a Restries has been placed on the means of further transport, there is an interruption of the conveying movement of the onward transport. The interruption lasts at least until the ream has been removed from the onward transport.
Weiterhin ist es vorteilhaft, wenn nach dem Ablegen des Restrieses auf dem neuen Stapel ein Ries von dem Stapel abgesondert wird, das aus dem Restries und Blättern des neuen Stapels besteht. Dabei erfolgt bevorzugt nach dem Ablegen des Rieses auf dem Weitertransportmittel ein Bündig- bzw. Glattstoßen des Rieses. Dieses Bündigstoßen dient dazu, vertikalen Versatz zwischen den Blättern des Restrieses und den dazusortierten Blättern des neuen Stapels auszugleichen. Das Stoßen kann dabei zumindest in Abtransportrichtung des Rieses vom Stapel von Blättern erfolgen. Zusätzlich ist es auch möglich, dass das Bündigstoßen auch in hierzu transversaler Richtung, also quer zur Förderrichtung des Rieses vom Stapel von Blättern erfolgt. Das Ergreifen und Wegfördern eines Rieses, das aus einem Restries und einer Anzahl von Blättern aus dem neuen Stapel zusammengesetzt ist, kann dabei vollständig gemäß dem erfindungsgemäßen Verfahren zum Absondern eines Rieses vorgegebener Blattzahl von einem Stapel von Blättern oder nach einem anderen, entsprechend geeigneten Verfahren erfolgen.Furthermore, it is advantageous if, after the deposition of the residual giant on the new stack, a ream is separated from the stack, which consists of the Restries and leaves the new stack. In this case, it is preferable after the deposition of the ream on the further transport means a flushing or smoothing of the ream. This flush is used to compensate for vertical offset between the leaves of the residual giant and the sorted leaves of the new stack. The bumping can take place at least in the removal direction of the ream from the stack of leaves. In addition, it is also possible that the flushing also takes place in this transversal direction, ie transversely to the conveying direction of the ream from the stack of leaves. The gripping and removal of a ream, which is composed of a Restries and a number of sheets from the new stack, can be done completely according to the inventive method for segregating a ream of predetermined number of sheets from a stack of sheets or any other, according to suitable methods ,
Darüber hinaus ist es alternativ zu der Lösung, das Restries auf einem Transportmittel zwischenzeitlich abzulegen auch möglich, eine zweite Greif- bzw. Klemmeinheit vorzusehen, die an dem Stapel an dessen dem ersten Greifer abgewandten Seite angreift, nachdem dieser um ein vorbestimmtes Maß von der ursprünglichen Bereitstellungsposition weggefahren worden ist. In diesem Fall muss das Restries so lange von dem Greifer und der Klemmeinrichtung klemmend gehalten werden, bis ein neuer Stapel von Blättern am Bereitstellungsort bereitsteht und das Restries wieder auf diesem abgelegt werden kann.In addition, as an alternative to the solution, in the meantime to place the Restries on a means of transport also possible to provide a second gripping or clamping unit which acts on the stack at its side facing away from the first gripper, after this by a predetermined amount of the original Deployment position has been moved away. In this case, the rest ridge must be kept clamped by the gripper and the clamping device until a new pile of leaves is ready at the place of delivery, and the rest of it can be put back on it.
Die erfindungsgemäße Aufgabe wird durch die Verfahren bzw. durch die Vorrichtung gemäß den unabhängigen Patentansprüchen gelöst.The object of the invention is achieved by the method or by the device according to the independent claims.
Bei der Vorrichtung, zu der die Restries-Einrichtung gehört, wird ein Stapel von Blättern in Einzelriese vorgegebener Blattzahl aufgeteilt, wozu ein Greifer vorgesehen ist. Der Greifer weist zur Erzeugung einer vorgebbaren Flächenpressung im aufzuteilenden Stapel ein erstes Anpresskissen auf. Er weist darüber hinaus ein Schwert zum Anstechen des aufzuteilenden Stapels in vorgebbarer Höhe vom oberen Rand des Stapels auf. Darüber hinaus ist eine Greifzange zum Handhaben des ausgesonderten Rieses vorgesehen. Die Greifzange besteht zum einen aus einer Gabel als unteres, in den Stapel einführbares Teil und zum anderen aus einem Zangenoberteil zum klemmenden Halten des Rieses zwischen Gabel und Zangenoberteil. Neben dem ersten Anpresskissen, das anstechseitig auf den Stapel von Blättern einwirkt, ist ein zweites Anpresskissen vorgesehen, das dem Erzeugen einer Pressung im aufzuteilenden Stapel an der der Angriffseite, also der Anstechseite, abgewandten Seite des Stapels dient.In the apparatus to which the Restries device belongs, a stack of sheets is divided into Einzelriese given number of sheets, including a gripper is provided. The gripper has a first pressure pad for generating a predeterminable surface pressure in the stack to be split. He also has a sword for piercing the stack to be split at a predetermined height from the top of the stack. In addition, a gripping tongs for handling the segregated ream is provided. The gripper consists on the one hand of a fork as a lower, insertable into the stack part and the other from a pliers shell for clamping holding the ream between the fork and pliers shell. In addition to the first Anpresskissen, the piercing acts on the stack of leaves, a second Anpresskissen is provided, which serves to generate a pressure in the stack aufzuteilenden on the attack side, ie the piercing, side facing away from the stack.
Das Schwert dient dem Anschnäbeln, also dem Anstechen mit geringer - beispielsweise im Bereich von weniger als 3mm liegender ― Eindringtiefe der Schwertspitze in den Stapel.The sword is the Anschnäbeln, so the piercing with a small - for example, in the range of less than 3mm lying - penetration depth of the sword tip in the stack.
Vorteilhaft ist an dem Greifer eine Ziehleiste vorgesehen, wobei die Ziehleiste vertikalbeweglich ausgestaltet und darüber hinaus so ausgebildet ist, daß sie spätestens dann mit der dem Greifer zugewandten Seite des Stapels von Blättern in Anlage gelangt, wenn der Papierstapel vom Schwert angeschnäbelt ist. Darüber hinaus ist es vorteilhaft, wenn die Ziehleiste an ihrer dem Stapel zugewandten Seite, der Vorderseite, eine Reibfläche aufweist. Die Reibfläche kann dabei insbesondere in Form einer Gummierung oder einer gummierten Schicht ausgebildet sein. Dabei dient die Ziehleiste dazu, durch eine vertikal nach oben wegfahrende Bewegung dann, wenn die Ziehleiste sich in seitlicher Anlage an dem Papierstapel befindet, das durch das Schwert abgesonderte Ries nach oben zu ziehen. Insbesondere dann, wenn das Schwert nur den Papierstapel angeschnäbelt hat, dient die Ziehleiste der Entlastung von der Gewichtskraft des Papieres des Schwertes des darüber liegenden Rieses. Zuvor wird das entsprechende Anpresskissen vom Papierstapel - nach oben ― weggefahren. Gleichzeitig ist es hierzu erforderlich, dass auf der dem Papierstapel der Anstechseite abgewandten Seite des Papierstapels, der Rückseite, ein zweites Anpresskissen dafür sorgt, dass die einseitig angehobenen Blätter vom Stapel nicht nach hinten wegrutschen können. Insbesondere das Hochziehen des auszusondernden Rieses durch die Ziehleiste ermöglicht es, das Schwert über die gesamte Länge hinweg nahezu lastfrei in den Papierstapel einzuführen. Das Schwert kann danach zum zuverlässigen Hochschieben des Rieses dienen und den Abstand zwischen dem ausgesonderten Ries und der nunmehr verbleibenden Oberkante des Reststapels dienen. Durch das Hochfahren des Schwertes wird insbesondere ein ausreichender Zwischenraum für das Einführen einer Gabel einer Greifzange geschaffen.Advantageously, a pull bar is provided on the gripper, wherein the pull bar designed vertically movable and beyond is designed so that it comes into contact with the side of the stack of sheets facing the gripper at the latest when the paper stack is angeschnäbelt by the sword. Moreover, it is advantageous if the pull bar on its side facing the stack, the front, has a friction surface. The friction surface may be formed in particular in the form of a rubber coating or a rubberized layer. In this case, the pull bar is used by a vertically upward moving away movement when the pull bar is in lateral contact with the paper stack to pull the ream secreted by the sword upwards. In particular, when the sword has only angeschnäbelt the paper stack, the pull bar of the discharge of the weight of the paper of the sword of the overlying ream serves. Beforehand, the corresponding pressure pad is removed from the paper stack - upwards. At the same time it is necessary for this purpose that on the side facing away from the paper stack of the piercing side of the paper stack, the back, a second Anpresskissen ensures that the unilaterally raised leaves from the stack can not slip backwards. In particular, the pulling up of the ream to be discarded by the pull bar makes it possible to insert the sword over the entire length into the paper stack almost without load. The sword can then serve to reliably push up the ream and serve the distance between the rejected ream and the now remaining upper edge of the rest of the pile. By raising the sword in particular a sufficient gap for the insertion of a fork of a gripping tongs is created.
Die Gabel dient vorzugsweise zum Absondern und Greifen des oberhalb des Schwertes liegenden Rieses. Gemäß weiterführender Ausgestaltung ist hierfür das Schwert gegenüber der Gabel vertikal beweglich angeordnet. Bevorzugt werden Ausgestaltungen, bei der sowohl das Anstechen bzw. Anschnäbeln des Papierstapels durch das Schwert, als auch das Einstechen des Schwertes in den Papierstapel sowie das Einfahren der Gabel in den vom Schwert geschaffenen Zwischenraum in einer Horizontalbewegung erfolgt, die rechtwinklig zu der zu dem Greifer zugewandten Seite des Stapels hin ausgerichtet ist. Hierbei sind Ausführungen zu bevorzugen, gemäß denen Schwert und Gabel unabhängig voneinander horizontal verfahrbar sind.The fork is preferably used to segregate and gripping the Ries above the sword. According to a further embodiment, the sword is arranged vertically movable relative to the fork for this purpose. Embodiments are preferred in which both the piercing or biting of the paper stack by the sword, as well as the insertion of the sword in the paper stack and the retraction of the fork in the space created by the sword in a horizontal movement takes place at right angles to the gripper facing side of the stack is aligned. Here are versions to prefer, according to which the sword and fork are independently movable horizontally.
Das Schwert kann aus einer nach vorne abragenden, dem Stapel zugewandten flachen Klinge bestehen. Demgegenüber ist die Gabel vorzugsweise so ausgestaltet, dass auf den Stapel hin abragende Zinken vorgesehen sind. Es sind vorzugsweise mindestens zwei Zinken vorgesehen, eine größere Anzahl von Zinken ist auch möglich. Besonders bevorzugt werden Ausgestaltungen, gemäß denen auf jeder Seite des Schwertes wenigstens ein Zinken angeordnet ist.The sword may consist of a forward projecting, facing the stack flat blade. In contrast, the fork is preferably designed so that projecting tines are provided on the stack. There are preferably provided at least two prongs, a larger number of prongs is also possible. Particular preference is given to configurations according to which at least one tine is arranged on each side of the sword.
In dem Stapel von Blättern wird mittels eines ersten Anpresskissens auf der vorderen Oberseite des Stapels, die dem Greifer zugewandt ist, eine definierte Pressung erzeugt. Mittels eines zweiten Anpresskissens wird auf der hinteren Oberseite des Stapels, die dem Greifer abgewandt ist, ebenfalls eine definierte Pressung im Stapel erzeugt. Danach wird der Greifer in seine Arbeitsposition bezüglich dem Stapel gefahren. Er befindet sich in unmittelbarer Nähe zu der ihm zugewandten Vorderseite des Stapels. In einem Abstand von der Oberkante des Stapels befindet sich das Schwert des Greifers. Der Abstand ist dabei so ermittelt, dass er der Stapelhöhe der vorgegebenen Anzahl von Blättern des im Stapel enthaltenen Blatttyps bei der durch das erste Anpresskissen erzeugten Pressung entspricht. Das Schwert führt dann in diesem Abstand von der Oberkante des Stapels eine horizontale Zustellbewegung durch. Die Länge der vertikalen Zustellbewegung ist dabei so bestimmt, dass das Schwert den Stapel ansticht, d.h. dass das Schwert nur geringfügig in den Stapel eindringt. Nach diesem ersten leichten Anstechen - Anschnäbeln - des Papierstapels an der Stelle, an der der Stapel in den Reststapel und das auszusondernde Ries aufgeteilt wird, wird das erste Anpresskissen von dem Stapel abgehoben. Auf der Vorderseite des Stapels herrscht dann keine Pressung mehr im Stapel, die über die Belastung durch die eigene Gewichtskraft der Blätter des ausgesonderten Rieses hinausgeht. Erst nach dieser Entlastung wird das Schwert vollständig in den Stapel eingeführt. Anschließend wird durch eine vertikale Hubbewegung des Schwertes das oberhalb des Schwertes liegende ausgesonderte Ries vorgegebener Blattzahl angehoben. In den dadurch im Zwischenraum zwischen der Oberkante des verbleibenden Reststapels und dem auszusondernden Ries oberhalb des Schwertes entstehenden Zwischenraum wird die Gabel der Greifzange des Greifers eingeführt. Nach dem Einführen der Gabel in den Zwischenraum wird die Greifzange geschlossen, indem das Zangenoberteil soweit abgesenkt wird, dass das auszusondernde Ries klemmend zwischen Gabel- und Zangenoberteil der Greifzange gehalten wird. Erst zu diesem Zeitpunkt wird das zweite, hintere Anpresskissen vom Stapel weggefahren und anschließend das in der Greifzange gehaltene, auszusondernde Ries vom Stapel weggefahren.In the stack of sheets, a defined pressure is generated by means of a first pressure pad on the front upper side of the stack, which faces the gripper. By means of a second Anpresskissens is also on the rear upper side of the stack, which faces away from the gripper, a defined pressure in the stack produced. Thereafter, the gripper is moved to its working position with respect to the stack. It is located in close proximity to the front of the stack facing it. At a distance from the top of the stack is the sword of the gripper. The distance is determined so that it corresponds to the stack height of the predetermined number of sheets of the sheet type contained in the stack at the pressure generated by the first Anpresskissen. The sword then performs a horizontal feed motion at this distance from the top of the stack. The length of the vertical feed movement is determined so that the sword pierces the stack, ie that the sword penetrates only slightly into the stack. After this first slight prick of the paper stack at the point where the stack is divided into the remainder stack and the ream to be discarded, the first pressure pad is lifted off the stack. On the front of the stack then no more pressure prevails in the stack, which is beyond the burden of the own weight of the leaves of the discarded Giant goes out. Only after this relief, the sword is completely inserted into the stack. Subsequently, by a vertical lifting movement of the sword, the rejected ream of predetermined number of sheets lying above the sword is raised. In the resulting space between the upper edge of the remaining remainder of the stack and the auszusondernden ream above the sword gap between the fork of the gripping tongs of the gripper is introduced. After insertion of the fork in the gap, the gripping pliers is closed by the pliers upper part is lowered so far that the auszusondernde Ries is clamped between the fork and pliers upper part of the gripping pliers. Only at this time, the second, rear Anpresskissen is moved away from the stack and then moved away held in the tongs, herauszusondernde ream from the stack.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung wird nach dem Anschnäbeln des Papierstapels durch das Schwert eine Ziehleiste in Kontakt mit der dem Greifer zugewandten Vorderseite des Papierstapels gebracht. Die Ziehleiste ist dabei als ein Teil des Greifers anzusehen. Die Ziehleiste liegt dann seitlich an dem Papierstapel an, wobei eine definierte Anlagekraft vorgegeben sein kann. Die Anlagekraft ist dabei so gewählt, dass eine Beschädigung der Blätter durch Eindrücken an der Anlagestelle nicht erfolgt. Nachdem die Ziehleiste in Anlage mit dem Papierstapel gelangt ist und nachdem das erste Anpresskissen vom Stapel gelöst ist, wird die Ziehleiste vertikal nach oben verfahren. Dabei werden die oberhalb des Schwertes im Einstechbereich liegenden Blätter des auszusondernden Rieses einseitig leicht angehoben. Diese Maßnahme dient der weiteren Gewichtsentlastung vor dem vollständigen Einstechen des Schwertes in den Papierstapel an der vorgegebenen Stelle. Es reicht dabei aus, wenn wenigstens der überwiegende Teil der oberhalb des Schwertes liegenden Blätter angehoben wird. Ein gewisser Restteil des auszusondernden Rieses kann weiterhin mit seiner Gewichtskraft auf dem Schwert aufliegen. Aus diesem Grunde ist es vorteilhaft, wenn die Ziehleiste so verfahren wird, dass sie nur oberhalb des Schwertes in Anlage mit dem Stapel gelangt.According to an advantageous embodiment of the invention, a Ziehleiste is brought into contact with the gripper facing the front of the paper stack after the beaking of the paper stack by the sword. The pull bar is to be regarded as part of the gripper. The pull bar is then on the side of the paper stack, with a defined contact force can be specified. The contact force is chosen so that damage to the leaves does not occur by pressing in at the contact point. After the pull bar comes into abutment with the paper stack and after the first Anpresskissen is released from the stack, the pull bar is moved vertically upwards. In this case, the lying above the sword in the piercing region leaves of auszusondernden ream are slightly raised on one side. This measure is used for further weight relief before the complete insertion of the sword in the paper stack at the specified location. It is sufficient if at least the majority of the leaves above the sword is raised. A certain residual part of the Ries to be eliminated can continue with his Resting weight on the sword. For this reason, it is advantageous if the pull bar is moved so that it only comes into contact with the stack above the sword.
Bei dem Verfahren ist es darüber hinaus vorteilhaft, wenn nach dem Einfahren der Gabel in den entstandenen Zwischenraum zwischen dem auszusondernden Ries und dem verbleibenden Reststapel das Schwert durch vertikales Verfahren in eine Stellung abgesenkt wird, in der die Schwertoberkante unterhalb der Zinken der Gabel, insbesondere unterhalb der Oberkante der Zinken der Gabel, liegt. Besonders vorteilhaft ist es, wenn das Schwert vertikal soweit abgesenkt wird, dass es mit definierter Auflagekraft auf dem verbleibenden Reststapel aufliegt. Dadurch, dass das Schwert mit undefinierter Auflagekraft auf dem verbleibenden Reststapel aufliegt, wird dieser Reststapel dagegen gesichert, dass die obersten Blätter beim Verfahren des auszusondernden Rieses mitbewegt werden und damit die gleichmäßige Stoßkantenausbildung des Stapels und die vertikal übereinander geradlinige Ausrichtung der Blätter zueinander im verbleibenden Reststapel verloren geht. Aus diesem Grunde ist es auch vorteilhaft, wenn das Schwert so lange in Anlage auf dem verbleibenden Reststapel verbleibt, bis das auszusondernde Ries vom Stapel entfernt ist. Besonders vorteilhaft ist es, wenn das auszusondernde Ries von der Angriffsseite des Greifers her gesehen vom Stapel nach hinten weggefahren wird. Ebenfalls ist vorteilhaft, wenn der Stapel von Blättern auf einer Hubeinrichtung bereitgestellt wird. Die Hubeinrichtung ist vorzugsweise so ausgebildet, dass nach jedem Entfernen eines Rieses ein Anheben des Papierstapels erfolgt, wobei das Anheben gerade um das Maß erfolgt, das der Höhe des ausgesonderten Rieses entspricht. Dadurch wird erreicht, dass sich vor Beginn jedes Aussonderns eines Rieses von dem Papierstapel die Oberkante des Papierstapels auf gleicher Höhe befindet. Alternativ oder ergänzend zu dem Ausrichten der Oberkante des Papierstapels mittels einer Hubeinrichtung kann auch der Greifer so ausgebildet sein, dass er geeignet ist, die abnehmende Höhe des Papierstapels im Verlauf des aufeinanderfolgenden Aussonderns von Riesen aus dem Stapel auszugleichen. Dies kann insbesondere durch entsprechende Verfahreinrichtungen erfolgen.In the method, it is also advantageous if, after retraction of the fork in the resulting space between the auszusondernenden ream and the remaining remainder of the sword is lowered by vertical method in a position in which the upper edge of the sword below the tines of the fork, in particular below the top of the tines of the fork, lies. It is particularly advantageous if the sword is lowered vertically to the extent that it rests on the remaining stack with defined contact force. The fact that the sword rests with undefined bearing force on the remaining remainder stack, however, this residual stack is backed up that the top leaves are moved in the process of auszusondernden ream and thus the uniform edge formation of the stack and the vertical stacking one another rectilinear alignment of the leaves to each other in the remaining stack get lost. For this reason, it is also advantageous if the sword remains in abutment with the remaining stack until the scrap to be discarded is removed from the stack. It is particularly advantageous if the reaming auszusondernde is seen from the attack side of the gripper forth from the stack moved away to the rear. It is also advantageous if the stack of sheets is provided on a lifting device. The lifting device is preferably designed so that after each removal of a ream, a lifting of the paper stack takes place, wherein the lifting takes place just to the extent that corresponds to the height of the rejected Rieses. This ensures that the top edge of the paper stack is at the same height before the beginning of each throwing out a ream from the paper stack. Alternatively or in addition to the alignment of the upper edge of the paper stack by means of a lifting device and the gripper can be designed so that it is adapted to compensate for the decreasing height of the paper stack in the course of sequentially separating giants from the stack. This can be done in particular by appropriate traversing devices.
Diese und weitere Merkmale gehen außer aus den Ansprüchen aus der Beschreibung und den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombinationen bei einer Ausführungsform der Erfindung und auf anderen Gebieten verwirklicht sein und vorteilhafte Ausführungen darstellen können. Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden näher erläutert. Es zeigt:
- Fig. 1 bis 6
- eine erste Vorrichtung zum Aussondern eines Rieses von einem Stapel von Blättern während unterschiedlichen Phasen des Verfahrensablaufes;
- Fig. 7 bis 17
- eine Vorrichtung in unterschiedlichen Situationen des Verfahrensablaufes bei der Behandlung eines Restrieses;
- Fig. 18 bis 25
- ein weiteres Ausfürhungsbeispiel einer Vorrichtung in unterschiedlichen Stadien des Verfahrensablaufs zur Behandlung von Restriesen.
- Fig. 1 to 6
- a first apparatus for separating a ream from a stack of sheets during different phases of the process;
- Fig. 7 to 17
- a device in different situations of the procedure in the treatment of a Restrieses;
- Fig. 18 to 25
- Another Ausfürhungsbeispiel a device in different stages of the procedure for the treatment of residual giants.
Die
Nachfolgend ist zunächst eine Vorrichtung gemäß den
In den
An einem vorgegebenen Bereitstellungsort 80 wird der Stapel 83 von Blättern bereitgestellt. Der Greifer 30 wird aus einem Träger 31, von dem diverse Teile abragen gebildet. Zunächst einmal ist das erste Anpreßkissen 32 vorgesehen, dass mit der Oberseite des Stapels von Blättern an der vorderen Angriffsseite des Greifers 30 zu diesem Zwecke vertikal verfahrbar angeordnet ist. Das zweite Anpreßkissen 33 ist im Bereich des gegenüberliegenden, hinteren Ende des Stapels 83 vorgesehen. Auch dieses ist wenigstens vertikal verfahrbar an dem Träger 31 gehalten, so daß unabhängig von der Lage der Oberkante des Stapels 83 von Blättern das Anpreßkissen in Anlage mit der Oberseite der Blätter bringbar ist.At a given
In der dargestellten Ausführungsform ist an der hinteren, der Angriffsseite des Greifers 30 abgewandten Seite ein Transportband angeordnet, das der Aufnahme der ausgesonderten Riese dient.In the illustrated embodiment, a conveyor belt is arranged on the rear, the attack side of the
Der Greifer 30, mit seinen den Papierstapel in ein Ries vorgegebener vorgebbarer Blattzahl aufteilenden Angriffs- und Greifmittel greift an der ihm zugewandten, vorderen Seite des Stapels 83 von Blättern an.The
Hierzu ist zunächst einmal das Schwert 35 vorgesehen, das in dem durch die Anzahl der Blätter, die ein Ries enthalten soll, vorgegebener Höhe in den Stapel von Blättern einsticht. In der
Gegenüber dem Schwert 35 unabhängig horizontal verfahrbar ist die Greifzange 40 an dem Träger 31 angeordnet. Die Greifzange 40 besteht dabei aus zwei relativ zueinander vertikal beweglichen Teilen. Zum einen der Gabel 41, die in einen Zwischenraum zwischen den auszusondernden Ries 90 und dem verbleibenden Reststapel 92 einfahren kann und dem Zangenoberteil 42. Dabei weist die Gabel 41 zwei Zinken 43 auf, jeweils ein Zinken 43 kann auf jeder Seite des Schwertes 35 in den Stapel eingefahren werden.Independently horizontally movable relative to the
Darüber hinaus ist auch noch ein Niederhalter 45 ausgebildet. Der Niederhalter 45 ist ebenfalls an dem Träger 31 angeordnet und kann durch eine horizontale Zustellbewegung mit seinen beiden Anlageflächen 46 in den Zwischenraum zwischen dem auszusondernden Ries 90 und dem verbleibenden Reststapel 92 eingefahren werden. Die Anlageflächen 46 greifen dabei jeweils zwischen dem Schwert und einem Zinken 43 der Gabel 41 in den Zwischenraum ein, wie dies aus der unteren, als Aufsicht gezeichneten Bildhälfte erkennbar ist.In addition, a hold-down 45 is also formed. The hold-down 45 is likewise arranged on the
In der
Zum Aussondern eines Rieses 90 mit der vorgebbaren Anzahl von Blättern sticht das Schwert 35 den Stapel 83 an. Hierzu dringt das Schwert mit seiner Schwertspitze nur geringfügig, d.h. in der Regel nur um wenige Millimeter, vorzugsweise beispielsweise um ca. 2 bis 3mm in den Stapel ein. Diese Situation ist in der
Nun wird zunächst das erste Anpresskissen 32 vertikal nach oben weggefahren. Dadurch wird die durch das erste Anpresskissen 32 erzeugte Pressung an der Vorderseite des Stapels aufgehoben. Des weiteren wird die sich in Anlage mit der Vorderseite des Stapels befindliche Ziehleiste 39 vertikal nach oben verfahren. Durch die reibschlüssig an der Ziehleiste gegebene Anlage wenigstens eines Teiles der Blätter des Rieses 90 werden diese an der Vorderseite des Stapels durch die Verfahrbewegung der Ziehleiste 39 angehoben und befinden sich nicht mehr in Auflage mit dem verbleibenden restlichen Teil des Rieses und dem Reststapel 92. Dies gilt nur für die Vorderseite der Blätter, da an der hinteren Seite des Stapels weiterhin die Flächenpressung erzeugt wird. Hierzu befindet sich das zweite Anpresskissen 33 weiterhin in entsprechender Anlage mit dem Stapel 83, bestehend aus dem Reststapel 92 und dem auszusondernden Ries 90. Gleichzeitig wird dadurch verhindert, dass die Blätter des Rieses 90 durch das einseitige Anheben gegeneinander verrutschen und dadurch die fluchtende Anordnung der Blätter übereinander, wie sie in dem Stapel ursprünglich gegeben ist, aufgelöst wird. Nachdem durch vertikales Wegfahren des ersten Anpresskissens 32 und durch Anheben beispielsweise wenigstens des überwiegenden Teils des Rieses 90 auf der Einstichseite des Schwertes 35, eine weitest gehende Gewichtsentlastung im Einstichbereich hergestellt wurde, kann das Schwert nunmehr vollständig in den Stapel einstechen. Zur Erleichterung eines beschädigungsfreien Einstechens kann es vorgesehen sein, dass an dem Schwert, insbesondere an der Spitze der Klinge des Schwertes Luftaustrittsdüsen 37 vorgesehen sind, durch die Luft zwischen das unterste Blatt des auszusondernden Rieses und das oberste Blatt des verbleibenden Reststapels 92 eingeblasen wird. Hierdurch kann ein geringfügiges Luftkissen erzeugt werden, so dass das Schwert 35 nahezu reibungsfrei in den Stapel 83 einstechen kann und somit die Trennung zwischen dem auszusondernden Ries 90 und dem verbleibenden Reststapel 92 weiter definiert. Im Anschluss daran wird durch horizontales Verfahren des Schwertes nach oben an der Einstichseite das Ries 90 von dem Reststapel 92 getrennt und es wird ein Zwischenraum 86 erzeugt. Die nach diesen Abläufen erreichte Situation ist in der
Um zu der in der
Um aus der in
Der verbleibende Reststapel 92 wird durch den Niederhalter 45 in seiner Lage fixiert, während durch ein horizontales Verfahren der Greifzange 40 das auszusondernde Ries nach hinten vom Stapel weg auf das Transportband 85 gelangt. Diese Situation ist in der
Nach dem das Ries 90 vollständig auf das abfahrende Transportband 85 überführt wurde, öffnet sich die Greifzange 40 und diese kann nunmehr wieder in ihre in der
Die
Die in der
Gemäß der in
Um die in
Das Schwert 35 befindet sich dabei in einer Position außerhalb des neuen Stapels 93. Nunmehr wird das in der Greifzange 40 festgehaltene Restries 91 auf den neuen Stapel 93 aufgestapelt. Dieser Aufstapelvorgang ist in der in
Wie in
Nunmehr wird das Schwert 35 in den Zwischenraum 86 zwischen dem Restries 91 und dem neuen Stapel 93 eingefahren. Soweit Luftaustrittsdüsen im Schwert 35 vorhanden sind, kann nunmehr Luft in den Zwischenraum eingeblasen werden.As in
Now, the
Nunmehr wird die Greifzange 40 geöffnet. Dies geschieht insbesondere dadurch, dass die Gabel 41 der Greifzange 40 vertikal nach unten verfahren wird und die Gabeloberkante somit unterhalb des Niveaus des Schwertes 35 gelangt. Anschließend wird die Greifzange 40 in eine Position außerhalb des Bereiches des neuen Stapels 93 verfahren. Das Restries liegt nun einerseits auf dem neuen Stapel 93 auf und andererseits leicht auf dem Schwert 35 auf. Dabei wird die Auflagekraft gegebenenfalls durch die eingeblasene Luft an den Austrittsdüsen des Schwertes eingeblasene Luft verringert. Das Schwert wird nach vorne weggefahren, d.h. seine Schwertvorderkante gelangt außerhalb des Eingriffbereiches mit dem neuen Stapel 93 und dem Restries 91. Nunmehr liegt also das Restries, das um es von dem restlichen neuen Stapel 93 unterscheiden zu können in den
Um von dieser in der
Im weiteren Ablauf des Verfahrens gelangt man zu der
Die Vorderkante des Rieses 90 gelangt in Anlage mit der Anschlagleiste 60, die in den Verfahrweg des Rieses 90 eingefahren wurde. Dabei kann diese Anschlagleiste 60 Teil einer weiteren Greifeinrichtung 62 sein, die das Ries 90 ergreift und weiter manipuliert. Sobald sich die - nunmehr in Transportrichtung des Rieses 90 gesehenen - vordere Kante des Rieses in Anlage mit der Anschlagleiste 60 befindet, wird die Transportförderbewegung des Transportbandes 85 unterbrochen. Mittels von entsprechenden Stellen angetriebenen Stossleisten 61, die sowohl an den beiden transversalen Seiten des Rieses 90 als auch mit einer Stossleiste, die am in Transportrichtung des Rieses gesehen hinteren Ende, das früher das vordere Ende die vordere Seite des Stapels 83 gebildet hat angreifen können, wird das Ries 90 bündig gestoßen. Durch das Bündigstoßen mittels der Stoßleisten 61 wird die Ausrichtung der Blätter des Restrieses 91 zu den Blättern des neuen Stapels 93 innerhalb des nunmehr gebildeten Rieses 90 ausgeglichen. In vertikaler Richtung wird ein sauber fluchtend ausgebildetes Ries 90 sichergestellt. Dieses Ries 90 kann nun beispielsweise, wie in der
Die
Um die in der
Der Übergang von der in
The transition from the in
In der
Claims (14)
- Destacking method in which a stack of sheets is divided into reams (90) of a predefined number of sheets with a gripper (30, 40), characterized in that, for the treatment of a residual ream (91), the residual ream (91) is gripped like a full ream (90) by the gripper (30, 40), wherein a residual ream is given when the number of sheets of the stack (83) of sheets remaining at a supply point is less than the predefinable number of sheets which is comprised by a ream (9D), the residual ream (91) is moved away from the supply point, a new stack (93) of sheets is fed to the supply point and the residual ream (91) is transported back to the new stack and deposited thereon.
- Method according to Claim 1, characterized in that the residual ream (91) is transported into a position which is horizontally offset in relation to the supply point, is held in this position separate from the stack (83), and, for redepositing on the said stack, is moved back into a position substantially aligned with the new stack (93) and is amalgamated for the separation of a new, full ream, and in that the residual ream (91) is moved away from the supply point of the stack (83) substantially horizontally, preferably in the direction of evacuation, is held ready there for return transport to the new stack (93) and, once the new stack (93) is provided at the supply point, is returned substantially horizontally to this and deposited thereon.
- Method according to one of the preceding claims, characterized in that, before the residual ream (91) is transported onto the new stack (93), the sheets of the new stack (93) are held fast in a non-displaceable manner by means of a pressure means, for example by means of the blade (35) of the gripper (30).
- Method according to one of the preceding claims, characterized in that, after the residual ream (91) has been deposited on the new stack (93), a ream (90), consisting of the residual ream (91) and sheets of the new stack (93), is separated off from the stack (83).
- Method according to one of the preceding claims, characterized in that, after the residual ream (91) has been deposited on the new stack, a ream consisting of the residual ream (91) and a part of the new stack is separated off from the stack (83) at a stack edge, whereafter the ream is seized by means of a gripper (30) having a tongs top part (42) and a tongs bottom part (41), the gripper is moved up to the stack, and the ream (90) held in its gripping tongs (40) moves away from the stack, with a first pressure pad (32) on the side of the gripper (40) a defined pressure is generated in the stack (83), with a second pressure pad (33) on that side of the stack (83) which lies opposite the gripper (30) a defined pressure is generated in the stack, for the separation-off of the ream (90) a blade (35) of the gripper (30), which blade is located with respect to a top edge of the stack at a distance apart corresponding to the predefined number of sheets of a ream, by a horizontal feed motion with the point of the blade, pricks the stack at the corresponding distance apart, the first pressure pad (32) is lifted from the stack, the blade (35) stabs fully into the stack and then, by a vertical lifting motion, raises the ream (90) of a predefined number of sheets, which ream is formed above the blade (35), on the stabbing side of the blade, the tongs bottom part (41) moves into the interspace formed by the one-sided raising of the ream (90), and the ream (90) is held in a clamping manner between the tongs top part and the tongs bottom part (42, 41), and the second pressure pad (33) is moved away from the stack before the gripper (30) moves away from the stack the ream held in the gripping tongs.
- Method according to one of the preceding claims, characterized in that the residual ream (91) is seized by its one edge by the gripper (30, 40) and by its opposite edge by a gripping device (62) and, as the new stack (93) is supplied, is offset somewhat in the horizontal direction, is held over the supply point of the new stack and is afterwards deposited on the new stack (93).
- Method according to Claim 6, characterized in that the residual ream is pushed by the gripper (30, 40) substantially horizontally into the gripping device (62).
- Method according to one of Claims 1-5, characterized in that the residual ream (91) is deposited on a forwarding conveyor (85), which also serves for the onward conveyance of full reams and the conveying motion of which is interrupted whenever a residual ream (91) is deposited thereon.
- Method according to Claim 8, when related back to Claim 4, characterized in that this ream is pushed flush on the forwarding conveyor (85) by means of corresponding push bars.
- Destacking apparatus in which a stack (83) of sheets is divided into individual reams (90) of a predefined number of sheets, comprising a gripper (30) having a set of gripping tongs (40) which has a tongs bottom part (41) and a tongs top part (42), comprising a blade (35) for separating off reams (90) of predefined height from a stack (83) provided at a supply point for unstacking purposes, and wherein a new stack can be fed to the supply point following unstacking of the possible number of reams therefrom, characterized by means for gripping a residual ream (91) of the supplied stack (83), for temporarily storing the residual ream and for placing the residual ream (91) back onto a new stack (93) provided at the supply point, wherein a residual ream (91) is given when the number of sheets of the previous stack (83) remaining at the supply point is less than the predefinable number of sheets which is comprised by a ream (90), wherein the means comprises a gripper (30) for gripping the residual ream (91), wherein this is the gripper (30) with gripping tongs (40), tongs bottom part (41) and tongs top part (42) and is arranged so as to be transportable to an action side of the supplied stack (83), and on the rear side facing away from the action side of the gripper (30) there is arranged a conveyor belt (85) for temporarily storing the residual ream, and the gripper (30) is designed for the sliding movement of the residual ream onto the conveyor belt (85) and has means for the speed-synchronous transportation of gripper (30) and conveyor belt (85) in order to lead the residual ream (91) back and forth from and to the supply point.
- Destacking apparatus in which a stack (83) of sheets is divided into individual reams (90) of a predefined number of sheets, comprising a gripper (30) having a set of gripping tongs (40) which has a tongs bottom part (41) and a tongs top part (42), comprising a blade (35) for separating off reams (90) of predefined height from a stack (83) provided at a supply point for unstacking purposes, and wherein a new stack can be fed to the supply point following unstacking of the possible number of reams therefrom, characterized by means for gripping a residual ream (91) of the supplied stack (83), for temporarily storing the residual ream and for placing the residual ream (91) back onto a new stack (93) provided at the supply point, wherein a residual ream (91) is given when the number of sheets of the previous stack (83) remaining at the supply point is less than the predefinable number of sheets which is comprised by a ream (90), wherein the means comprises a gripper (30) for gripping the residual ream (91), wherein this is the gripper (30) with gripping tongs (40), tongs bottom part (41) and tongs top part (42) and is arranged so as to be transportable to an action side of the supplied stack (83), and the gripper (30) is designed for the sliding movement of the residual ream, and a gripping apparatus (62) for clamping the residual ream (91) on a side lying opposite the side gripped by the gripper (30) and which can be actuated to hold the residual ream (91) gripped on the other side by the gripper (30) slightly offset, but substantially over the supply point.
- Apparatus according to Claim 10, characterized by a squaring device (60, 61) for a completed ream (90) consisting of a residual ream (91) and supplementary sheets of the new stack.
- Apparatus according to Claim 12, characterized in that the squaring device (60, 61) contains a conveyor belt (85) lying adjacent to the stack supply point, and the residual ream device is configured also to grip and transfer the completed ream (90) to the squaring device (60, 61).
- Apparatus according to one of Claims 10 to 13, characterized in that the gripper (30) has a first pressure pad (32), separated from the tongs top part (42), for generating a defined pressure in the stack (83) to be divided, the blade (35) for pricking the stack (83) to be divided at the predefined height from the upper margin of the stack, and a second pressure pad (33), for generating a pressure in the stack (83) to be divided, which acts on that side of the stack (83) which lies opposite the action side of the gripper (30).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50115596T DE50115596D1 (en) | 2001-06-08 | 2001-06-08 | Device and method for gentle and waste-free further processing of a residual giant |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20010710027 EP1264792B1 (en) | 2001-06-08 | 2001-06-08 | Device and method for dividing a stack of sheets into reams of a predetermined number of sheets |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20010710027 Division EP1264792B1 (en) | 2001-06-08 | 2001-06-08 | Device and method for dividing a stack of sheets into reams of a predetermined number of sheets |
EP01710027.2 Division | 2001-06-08 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1484270A2 EP1484270A2 (en) | 2004-12-08 |
EP1484270A3 EP1484270A3 (en) | 2005-01-05 |
EP1484270B1 true EP1484270B1 (en) | 2010-08-11 |
Family
ID=8183650
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04020937A Expired - Lifetime EP1484270B1 (en) | 2001-06-08 | 2001-06-08 | Device and method for gentle and wasteless further treatment of a remaining ream |
EP20010710027 Expired - Lifetime EP1264792B1 (en) | 2001-06-08 | 2001-06-08 | Device and method for dividing a stack of sheets into reams of a predetermined number of sheets |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20010710027 Expired - Lifetime EP1264792B1 (en) | 2001-06-08 | 2001-06-08 | Device and method for dividing a stack of sheets into reams of a predetermined number of sheets |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP1484270B1 (en) |
DE (2) | DE50115596D1 (en) |
ES (2) | ES2269336T3 (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITBO20030489A1 (en) * | 2003-08-08 | 2005-02-09 | Kpl Packaging Spa | METHOD FOR FORMATION AND LEVY OF SHEETS |
ITBO20030490A1 (en) * | 2003-08-08 | 2005-02-09 | Kpl Packaging Spa | METHOD AND DEVICE FOR THE FORMATION AND LEVY OF SHEETS |
DE102005008595A1 (en) * | 2004-05-05 | 2005-12-01 | Baumann Maschinenbau Solms Gmbh & Co. Kg | Device and method for automatic portioning of sheet material stacks, in particular of paper stacks |
ITBO20060238A1 (en) * | 2006-04-04 | 2007-10-05 | Giben Int Spa | APPARATUS FOR FORMING PANELS AND FOR SUPPLYING THEM TO A STATION USER. |
ITBO20070540A1 (en) * | 2007-07-30 | 2009-01-31 | Giben Int Spa | APPARATUS FOR FORMING PANELS OF PANELS TO BE SUPPLIED TO A USER STATION. |
EP2128057A1 (en) * | 2008-05-28 | 2009-12-02 | KG Schneider-Senator Verkaufs-GmbH | Method and device for lifting and handling a stack of sheets or a section of the stack |
DE102010016938B4 (en) | 2010-05-12 | 2014-06-12 | Baumann Maschinenbau Solms Gmbh & Co. Kg | Apparatus and method for removing a sub-stack from a stack of sheets |
DE102010017593B4 (en) | 2010-06-25 | 2013-01-03 | Baumann Maschinenbau Solms Gmbh & Co. Kg | A method and arrangement for picking up a sub-stack of a counted number of sheets of material from a stack of materials |
DE102010056593B4 (en) | 2010-06-25 | 2013-01-03 | Baumann Maschinenbau Solms Gmbh & Co. Kg | Method for determining a spatial position of a side edge of a material stack |
US8777551B1 (en) * | 2011-07-14 | 2014-07-15 | Automatan, Inc. | Robotic lifting apparatus |
DE102011082967B4 (en) | 2011-09-19 | 2020-08-06 | Masterwork Machinery Gmbh | Device and method for lifting a stack arranged on a support |
WO2016096160A1 (en) * | 2014-12-18 | 2016-06-23 | Bobst Grenchen Ag | Feeder system for feeding a stack of flat elements to a processing device |
FR3043078B1 (en) | 2015-10-30 | 2020-09-18 | C E R M E X Constructions Etudes Et Rech De Materiels Pour Lemballage Dexpedition | EXTRACTION DEVICE AND METHOD |
DK201670379A1 (en) * | 2016-05-30 | 2017-12-11 | Schur Packaging Systems Ab | Pile Sheet Remover |
DE102019116306A1 (en) * | 2019-06-14 | 2020-12-17 | Koenig & Bauer Ag | Substrate handling system and method of operating a substrate handling system |
DE202022104808U1 (en) | 2022-08-25 | 2023-11-30 | Bw Papersystems Hamburg Gmbh | Device for dividing a stack of sheets into reams of a predetermined number of sheets |
DE102022121537A1 (en) | 2022-08-25 | 2024-03-07 | Bw Papersystems Hamburg Gmbh | Device and method for dividing a stack of sheets into reams of a predetermined number of sheets |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB772679A (en) * | 1953-11-20 | 1957-04-17 | Harris Seybold Co | Improvements in or relating to a method of continuously handling sheets in piles in the production of printed sheets in a printing press and apparatus for carrying out the method |
DE2639676C2 (en) * | 1976-09-03 | 1985-10-03 | Maschinenbau Oppenweiler Gmbh, 7155 Oppenweiler | Device for feeding a round pile sheet feeder |
GB2090815B (en) * | 1980-12-16 | 1985-02-06 | Thompson Jack Evans | Removing batches of sheets from a stack |
DE3641434A1 (en) * | 1986-12-04 | 1988-06-09 | Bielomatik Leuze & Co | Separation device for multiple layer stacks of sheet layers |
CH675995A5 (en) * | 1988-08-01 | 1990-11-30 | Oscar Roth | Sheets of paper from stack, removing device |
EP0353527A3 (en) * | 1988-08-01 | 1990-09-05 | Oscar Roth | Device for unpiling a pallet loaded with a stack of paper sheets |
DE3835032A1 (en) * | 1988-10-14 | 1990-04-19 | Niepmann Traylift Transport | METHOD AND DEVICE FOR THE STACKING OF BLOCKS IN BLOCKS ON PALLETS STACKED |
CH680126A5 (en) | 1989-10-12 | 1992-06-30 | Schneider Engineering | |
SE505882C2 (en) | 1994-02-10 | 1997-10-20 | Alf Peter Nissen | Method and apparatus for dividing a pile of sheets into rice and loading the rice into a rice binding device |
IT1274871B (en) * | 1994-07-29 | 1997-07-25 | Wrapmatic Spa | SELECTION DEVICE FOR LARGE BULK RACKS. |
DE19953018B4 (en) * | 1999-11-04 | 2006-03-09 | Koenig & Bauer Ag | Installation on continuous sheet feeders |
ITBO20000621A1 (en) * | 2000-10-26 | 2002-04-26 | Innopack S R L | METHOD AND DEVICE FOR THE COLLECTION OF SHEETS OF SHEETS |
-
2001
- 2001-06-08 EP EP04020937A patent/EP1484270B1/en not_active Expired - Lifetime
- 2001-06-08 DE DE50115596T patent/DE50115596D1/en not_active Expired - Lifetime
- 2001-06-08 DE DE50110700T patent/DE50110700D1/en not_active Expired - Lifetime
- 2001-06-08 ES ES01710027T patent/ES2269336T3/en not_active Expired - Lifetime
- 2001-06-08 EP EP20010710027 patent/EP1264792B1/en not_active Expired - Lifetime
- 2001-06-08 ES ES04020937T patent/ES2349734T3/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1484270A2 (en) | 2004-12-08 |
EP1264792B1 (en) | 2006-08-09 |
EP1484270A3 (en) | 2005-01-05 |
ES2349734T3 (en) | 2011-01-11 |
ES2269336T3 (en) | 2007-04-01 |
DE50110700D1 (en) | 2006-09-21 |
EP1264792A1 (en) | 2002-12-11 |
DE50115596D1 (en) | 2010-09-23 |
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