EP0423065A2 - Déchargeur de piles des feuilles pour enlever une section de pile d'une pile des feuilles - Google Patents

Déchargeur de piles des feuilles pour enlever une section de pile d'une pile des feuilles Download PDF

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Publication number
EP0423065A2
EP0423065A2 EP90810688A EP90810688A EP0423065A2 EP 0423065 A2 EP0423065 A2 EP 0423065A2 EP 90810688 A EP90810688 A EP 90810688A EP 90810688 A EP90810688 A EP 90810688A EP 0423065 A2 EP0423065 A2 EP 0423065A2
Authority
EP
European Patent Office
Prior art keywords
knife
stack
support element
guide
pliers
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.)
Granted
Application number
EP90810688A
Other languages
German (de)
English (en)
Other versions
EP0423065B2 (fr
EP0423065B1 (fr
EP0423065A3 (en
Inventor
Willi Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SCHNEIDER ENGINEERING
Original Assignee
SCHNEIDER ENGINEERING
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4262254&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0423065(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SCHNEIDER ENGINEERING filed Critical SCHNEIDER ENGINEERING
Publication of EP0423065A2 publication Critical patent/EP0423065A2/fr
Publication of EP0423065A3 publication Critical patent/EP0423065A3/de
Application granted granted Critical
Publication of EP0423065B1 publication Critical patent/EP0423065B1/fr
Publication of EP0423065B2 publication Critical patent/EP0423065B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/30—Arrangements for removing completed piles
    • B65H31/3036—Arrangements for removing completed piles by gripping the pile
    • B65H31/3045—Arrangements for removing completed piles by gripping the pile 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
    • 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
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/20—Avoiding or preventing undesirable effects
    • B65H2601/25—Damages to handled material

Definitions

  • the invention relates to an unstacking device for removing a partial stack from a stack of sheets standing on an airfoil, with a table top, a horizontal adjustment device for executing horizontal relative movements between the table top and said airfoil, a pair of pliers with an upper jaw and a lower part for grasping and Holding an edge of a partial stack and a vertical adjustment device for executing vertical relative movements between the table top and the pliers on the one hand and the supporting surface on the other.
  • the lower part of the pliers consists of a knife-like lower plier jaw, which can be inserted into a stack of sheets by horizontally displacing the pliers, while the upper plier jaw rests on and on top of the stack slides.
  • the tongs thus grip an edge of a partial stack of predetermined thickness, corresponding to the set distance from the upper jaw to the lower jaw.
  • the pliers can then be lifted to lift the detected partial stack edge from the remaining rest of the stack of sheets, and then the table top can be inserted between the partial stack and the remaining rest of the stack of sheets so that the partial stack lies on the table top.
  • a disadvantage of the known unstacking device is that individual blades can be damaged by the sharp edge and / or tip of the knife-like lower pliers jaw if the lower pliers bake a point on an edge of a relatively thick, heavy stack of parts so far from the rest of the stack of sheets that the table top can then be pushed between the stack of parts and the rest of the stack of sheets.
  • the sharp edge and / or tip of the lower jaw of the pliers are essential so that they can be inserted into the stack of leaves.
  • the upper jaw of the tongs will shift the uppermost sheet or the top sheets of the stack if it slides into the stack of sheets on the top of the stack when the lower tongs are inserted.
  • the object of the invention is to design the unstacking device specified at the outset so that the disadvantages of the known unstacking device can be avoided and in particular the edge of relatively thick and heavy partial stacks can be lifted off without damaging the sheets.
  • the pliers lower part has a knife guide, a horizontal knife and a knife drive device for causing horizontal movements of the knife with respect to the knife guide, and in addition to the knife at least one support element and a support element adjusting device for executing horizontal movements of the support element with respect to the Knife guide contains and that the pliers also has a support element lifting device for executing vertical movements of the support element with respect to the knife.
  • the de-stacking device In the de-stacking device according to the invention, damage to the sheets by the knife when lifting off a partial stack edge can be avoided, if only a very small vertical relative movement is initially effected between the pliers with the knife and the contact surface with the stack of leaves after the knife has been inserted horizontally into the stack of leaves with the upper jaw of the pliers resting on the top of the stack of leaves. The deflection of the partial stack edge at the edges and edges of the knife is then still small.
  • the partial stack lies at a comparatively small distance in front of the knife and laterally next to the knife on the remaining stack, so that the partial stack weight to be carried by the knife is not yet large.
  • the support elements can then be pushed next to the knife, which need not have sharp edges and can also be designed to be stronger than the knife.
  • the support elements can then be lifted with respect to the knife, so that the support elements then practically alone support the edge of the partial stack and clamp it against the upper jaw of the pliers with a predetermined force.
  • the knife can be pulled back and a further vertical relative movement between the pliers and the support surface can be brought about with the stack of leaves in order to enlarge the gap between the partial stack edge and the remaining stack in the area of the pliers so that the gap can accommodate the table top.
  • a horizontal relative movement between the table top on the one hand and the support surface with the stack of sheets and the pliers on the other hand can be brought about by either the table top between the part held by the pliers stack and the remaining stack is retracted or the partial stack is pulled from the pliers onto the table top and at the same time the remaining stack is moved under the table top so that the partial stack comes to lie completely on the table top.
  • the depacking device shown is used to remove a partial stack from a stack of sheets standing on a support surface by means of a table top 1.
  • the support surface can be the floor or the top of a pallet 2 lying on the floor, on which a stack of paper sheets 3 stands (FIG. 4).
  • the device contains a horizontal adjustment device for executing horizontal relative movements between the table top 1 and the supporting surface or the pallet 2.
  • the horizontal adjustment device in the device shown consists of one on one Machine stand 4 held table guide 5 (Fig. 1), on which the table top 1 is arranged horizontally displaceable, and from a drive means (not shown) for causing horizontal displacements of the table top along the table guide.
  • the pallet 2 could also be horizontally displaceable along a guide (not shown) by a drive means.
  • the device also contains a pair of pliers with an upper jaw 6 and a lower part 7 for gripping and holding a part of the stack of sheets 3 and a vertical adjustment device for executing vertical relative movements between the table top 1 and the pliers 6, 7 on the one hand and the pallet 2 on the other.
  • the vertical adjustment device consists of vertical guides (not shown) on the machine stand 4, along which the table guide 5 formed by a slide can be displaced vertically by a drive means, not shown.
  • the pallet 2 or a carrier for the same could also be guided such that it can be raised and lowered vertically along a vertical guide, not shown, by a drive means, not shown.
  • the pliers 6, 7 are carried by a pliers carrier 8 which, together with the table top 1, can be raised and lowered on the machine stand 4.
  • the tong holder 8 is preferably arranged on a second carriage 9, which is also guided on the vertical guides of the machine stand 4 and which can be raised and lowered with respect to the table guide 5 formed by the first carriage by a drive means (not shown).
  • the tong holder 8 can be arranged on the slide 9 so as to be horizontally displaceable and by means of a drive means 10 with respect to the slide 9 be moved horizontally.
  • the lower part of the pliers 7 contains a knife guide 11 (FIGS. 2, 3) in which a horizontal knife 12 is guided to be horizontally displaceable.
  • a pneumatic cylinder 13 is fastened on the knife guide 11 and moves the knife 12 horizontally with respect to the knife guide 11 between the left end position according to FIG. 2 and a right end position. In the right end position, the free end of the knife 12 is retracted into the knife guide 11.
  • the knife guide 11 is attached to the lower end of a vertical rod 14, the upper end of which is attached to a circuit board 15.
  • the rod 14 is guided freely vertically displaceably in a block 16 fastened to the tong holder 8.
  • the downward movement of the rod 14 with respect to the pliers carrier 8 is limited by stop elements 18 and 19 carried by the circuit board 15, which interact with the top of the block 16 and the pliers carrier 8, respectively. While the stop element 18 is rigidly attached to the circuit board 15, the stop element 19 is carried by the plunger of a pneumatic cylinder 20 fastened on the circuit board 15. By actuating the pneumatic cylinder 20, the stop element 19 is moved downward with respect to the circuit board 15, as a result of which the lower end position of the circuit board 15 and the rod 14 is adjusted upward with respect to the pliers carrier 8.
  • the circuit board 15 also carries the upper jaw 6.
  • the vertical distance between the upper jaw 6 and the knife guide 11 or the knife 12 is adjustable, in the illustrated embodiment by turning a screw 21 which is rotatably mounted in the circuit board 15 (FIG. 2) , which is screwed into a sleeve 22, at the lower end of which the upper jaw 6 is fixed.
  • the sleeve 22 must not turn with screw 21;
  • a tab 23 is attached to the sleeve 22, which is guided on the rod 14 to be vertically displaceable.
  • the lower part of the pliers 7 also contains at least one support element in addition to the knife 12.
  • a support element 24 or 25 (FIGS. 2, 3) is arranged on both sides of the knife 12.
  • the support elements 24 and 25 are guided horizontally displaceably in a support element guide 26.
  • a pneumatic cylinder 27 or 28 is fastened on the support element guide 26 and moves the support element horizontally with respect to the support element guide 26 between the left end position according to FIG. 2 and a right end position. In the right end position, the free ends of the support elements 24 and in the support element guide 26 are retracted.
  • the support element guide 26 and the pneumatic cylinders 27 and 28 form a support element adjusting device for executing horizontal movements of each support element with respect to the knife guide 11.
  • the support element guide 26 is guided so as to be vertically displaceable on the rod 14 carrying the knife guide 11, and on the circuit board 15 is a pneumatic cylinder 29 with a tie rod 30 (Fig. 2) attached to the lower end of the support member guide 26 is attached.
  • the pneumatic cylinder 29 and the means for guiding the support element guide 26 on the vertical rod 14 form an embodiment of a support element lifting device for executing vertical movements of the support elements 24 and 25 with respect to the knife 12.
  • a stack of sheets 3 standing on an airfoil, for example on the pallet 2, can be used to remove partial stacks of a precisely selectable thickness or number of sheets in the manner described below with reference to FIGS. 4 to 17.
  • the table top 1 is at any height at which a partial stack has previously been pushed away from it, next to that on the wing or pallet 2 (FIG 4) Standing stack of sheets.
  • the knife 12 of the lower part 7 of the pliers is retracted into the knife guide 11, and the support elements 24 and 25 are withdrawn into the support element guide 26.
  • a vertical relative movement between the table top 1 and the tong holder 8 on the one hand and the pallet 2 on the other hand is carried out, in the embodiment shown by lifting (or lowering) the table guide 5 along the vertical guides of the machine stand 4 until the upper jaw 6 as in 4 is shown a certain distance higher than the top of the sheet stack 3. Reaching this height is determined by a photocell device 31 (FIG. 4) connected to the table top 1, which emits a signal when it is the top of the sheet stack 3 reached.
  • the pliers carrier 8 is moved horizontally to the left (or the support surface 2 with the stack of leaves 3 to the right) until the upper jaw 6 stands vertically above the stack of leaves 3 and the knife guide 11 and the support element guide 26 are small Stand next to the stack of sheets 3.
  • the tong holder 8 can be moved to the left by shifting with respect to the carriage 9 by means of the hydraulic cylinder 10 (FIG. 1); but he could also be horizontally immovably connected to the table top 1 and are moved together with the table guide 5 to the left. 5 can be indicated, for example, by a photocell device 32 (FIG. 3) arranged in the support element guide 26, which detects the distance between the support element guide 26 and the stack of sheets 3.
  • the predetermined contact force can be changed by weight loading or unloading means.
  • a compression spring 34 is shown schematically in FIG. 3, which is held in a sleeve 35 which is fastened in height-adjustable manner in the circuit board 15 and the lower end of which rests on the upper side of the pliers carrier 8.
  • the compression spring 34 transmits part of the Ge importance of the board 15 and the parts carried by it directly onto the pliers carrier 8.
  • the size of the part of this weight received by the compression spring 34 can be changed by adjusting the height of the sleeve 35 with respect to the board 15.
  • the pneumatic cylinder 13 (FIGS. 2, 3) is then actuated in order to stab the knife 12 horizontally into the sheet stack 3, as shown in FIG. 7.
  • the puncture point lies a distance below the top of the stack of sheets 3, which is equal to the vertical distance of the knife 12 from the upper pliers jaw 6 set by turning the screw 21 (FIG. 2). Because of the predetermined contact force of the upper jaw 6, this distance corresponds practically exactly to a certain number of individual sheets of the stack 3.
  • the circuit board 15 and thus the knife guide 11 and the knife 12 are lifted over the rod 14 by a first predetermined, small distance, e.g. by lifting the table guide 5 and the second slide 9 and thus the tong holder 8.
  • the knife 12 lifts a region of the edge of a partial stack 3.1 adjacent to it slightly from the rest of the stack of sheets 3.2, as shown in FIG. 8.
  • the support elements 24, 25 are then inserted into the gap formed in this way between a region of the edge of the partial stack 3.1 and the remaining stack 3.2, as shown in FIG. 9, by actuating the pneumatic cylinders 27, 28 (FIG. 3).
  • the support element lifting cylinder 29 by actuating the support element lifting cylinder 29, the support element guide 26 and thus the support elements 24 and 25 are moved upward with a predetermined force with respect to the knife guide 11, to clamp the mentioned area of the edge of the partial stack 3.1 against the upper jaw 6.
  • the support elements 24 and 25 are then, as shown in FIG. 10, higher than the knife 12 and only carry the edge of the partial stack 3.1.
  • the knife 12 is pulled back into the knife guide 11 by actuating the pneumatic cylinder 13.
  • the table guide 5 and the second carriage 9 are moved further up a second predetermined distance in order to make the gap between the support finger guide 26 or the knife guide 11 and the top of the remaining stack 3.2 by lifting the circuit board 15 to such an extent that the Table top 1 can be inserted into the gap, and to raise the table top 1 at the level of this gap, as shown in Fig. 11.
  • the table top 1 with the separating roller 36 also lifts the areas of the right edge of the partial stack 3.1 that are more distant from the support elements 24, 25, which areas initially still hang down (possibly up to the top of the remaining stack 3.2) onto the top of the table top . Simultaneously with the horizontal displacement of the table top 1 along the table guide 5, the table guide 5 - and with it the second carriage 9 - are moved somewhat upwards along the machine frame 4, so that the separating roller 36 and the table top 1 run inclinedly into the gap between the partial stack 3.1 and the remaining stack 3.2. 12, the table top 1 is shown inserted between the partial stack 3.1 and the remaining stack 3.2. The area of the right edge of the partial stack 3.1 in the area of the supporting elements 24, 25 is clamped between the supporting elements and the upper jaw 6, while the areas of the partial stack 3.1 which are more distant from the supporting elements 24, 25 now lie on the table top 1.
  • the tong holder 8 can now be shifted to the right along the slide 9 by the hydraulic cylinder 10, so that the tong 6, 7 pulls the partial stacks 3.1 further onto the table top 1, as shown in FIG. 13.
  • the pneumatic cylinder 29 is then actuated in order to move the support element guide 26 and thus the support elements 24, 25 downward with respect to the knife guide 11 and the upper jaw 6, as shown in FIG. 14. As a result, the clamping of the edge of the partial stack 3.1 between the support elements 24, 25 and the upper jaw 6 is released.
  • the ineumatic cylinders 27 and 28 are actuated to pull the supporting elements 24 and 25 away from under the edge of the partial stack 3.1, so that this edge of the partial stack 3.1 also falls on the table top 1, as shown in FIG. 15.
  • a vertical relative movement between the plate 15 and the table top 1 is then carried out in order to raise the lower part 7 of the pliers over the height of the partial stack 3.1 lying on the table top 1 lift as shown in Fig. 16.
  • the pneumatic cylinder 20 is actuated for this purpose in order to adjust the circuit board 15 upwards with respect to the tong holder 8.
  • the tong holder 8 itself can also be moved upward by moving the second carriage 9 (FIG. 1) upward with respect to the first carriage 5 forming the table guide along the machine stand 4.
  • the partial stack 3.1 can then be pushed away from the table top 1.
  • the circuit board 15 is lowered again onto the pliers carrier 8 by actuating the pneumatic cylinder 20, and if necessary the second carriage 9 is lowered onto the first carriage 5 again.
  • the unstacking device is then ready to remove a new partial stack from the remaining stack 3.2.
  • An additional advantage of the design and mode of operation of the unstacking device according to the invention is that the unstacking device can easily be removed for parallel processing of two (or even more) stacks of sheets at the same time.
  • the unstacking device shown in the drawings contains only a pair of pliers 6, 7 carried by a circuit board 15 for removing partial stacks from only one stack of sheets 3.
  • a second block 16 with a second pair of pliers 6, 7 can be easily arranged on the plier carrier 8 from and parallel to the first pliers 6, 7 and arranged in the same way as these. Then two sheets 3 can be placed next to each other on the wing 2, for example a pallet.
  • the device then takes a partial stack of exactly the same number of sheets from each of the two stacked sheets, with both partial stacks simultaneously on the table top 1 come to rest and are then pushed on by it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Discharge By Other Means (AREA)
EP90810688A 1989-10-12 1990-09-12 Déchargeur de piles des feuilles pour enlever une section de pile d'une pile des feuilles Expired - Lifetime EP0423065B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3729/89 1989-10-12
CH3729/89A CH680126A5 (fr) 1989-10-12 1989-10-12

Publications (4)

Publication Number Publication Date
EP0423065A2 true EP0423065A2 (fr) 1991-04-17
EP0423065A3 EP0423065A3 (en) 1992-05-06
EP0423065B1 EP0423065B1 (fr) 1995-02-15
EP0423065B2 EP0423065B2 (fr) 1998-12-02

Family

ID=4262254

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810688A Expired - Lifetime EP0423065B2 (fr) 1989-10-12 1990-09-12 Déchargeur de piles des feuilles pour enlever une section de pile d'une pile des feuilles

Country Status (5)

Country Link
US (1) US5102293A (fr)
EP (1) EP0423065B2 (fr)
AT (1) ATE118454T1 (fr)
CH (1) CH680126A5 (fr)
DE (1) DE59008470D1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
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EP0694489A1 (fr) * 1994-07-29 1996-01-31 WRAPMATIC S.p.A. Dispositif pour le prélevement d'une partie d'une pile de feuilles de grande dimension
EP0749923A1 (fr) * 1995-06-22 1996-12-27 G.D. S.p.A. Dispositif pour enlever des piles de produit d'un support
EP1593627A3 (fr) * 2004-05-05 2007-06-20 Baumann Maschinenbau Solms GmbH & Co. KG Dispositif pour automatiquement débiter des piles de matériau en feuilles, en particulier des piles de papier
DE102010016938A1 (de) 2010-05-12 2011-11-17 Baumann Maschinenbau Solms Gmbh & Co. Kg Vorrichtung und Verfahren zum Abnehmen eines Teilstapels von einem Blätterstapel
DE102010056593A1 (de) 2010-06-25 2011-12-29 Baumann Maschinenbau Solms Gmbh & Co. Kg Verfahren zur Ermittlung einer Ortsposition einer Seitenkante eines Materialstapels
DE102010017593A1 (de) 2010-06-25 2011-12-29 Baumann Maschinenbau Solms Gmbh & Co. Kg Verfahren und Anordnung zum Aufnehmen eines Teilstapels einer abgezählten Anzahl von Materialbögen von einem Materialstapel
CN107487625A (zh) * 2017-07-24 2017-12-19 浙江华岳包装机械有限公司 卸纸机抓纸机构
WO2021171095A1 (fr) * 2020-02-26 2021-09-02 Greyorange Pte. Ltd. Procédé et système de manipulation d'objets déformables

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DE4124077C2 (de) * 1991-07-19 1995-03-09 Fraunhofer Ges Forschung Einrichtung zur Aufnahme von biegeschlaffen flächigen Teilen
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EP0423065B2 (fr) 1998-12-02
DE59008470D1 (de) 1995-03-23
EP0423065B1 (fr) 1995-02-15
EP0423065A3 (en) 1992-05-06
CH680126A5 (fr) 1992-06-30
ATE118454T1 (de) 1995-03-15
US5102293A (en) 1992-04-07

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