EP0422562B1 - Vorrichtung zur Übergabe eines Teilstapels aus blattförmigem Gut von einem Gesamtstapel zu einer Weiterverarbeitungsstation - Google Patents

Vorrichtung zur Übergabe eines Teilstapels aus blattförmigem Gut von einem Gesamtstapel zu einer Weiterverarbeitungsstation Download PDF

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Publication number
EP0422562B1
EP0422562B1 EP90119267A EP90119267A EP0422562B1 EP 0422562 B1 EP0422562 B1 EP 0422562B1 EP 90119267 A EP90119267 A EP 90119267A EP 90119267 A EP90119267 A EP 90119267A EP 0422562 B1 EP0422562 B1 EP 0422562B1
Authority
EP
European Patent Office
Prior art keywords
stack
partial stack
partial
table part
further processing
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
Application number
EP90119267A
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German (de)
English (en)
French (fr)
Other versions
EP0422562A2 (de
EP0422562A3 (en
Inventor
Wolfgang Mohr
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.)
Individual
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Individual
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Filing date
Publication date
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Publication of EP0422562A2 publication Critical patent/EP0422562A2/de
Publication of EP0422562A3 publication Critical patent/EP0422562A3/de
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Publication of EP0422562B1 publication Critical patent/EP0422562B1/de
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
    • 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/422—Handling piles, sets or stacks of articles
    • B65H2301/4225—Handling piles, sets or stacks of articles in or on special supports
    • B65H2301/42256—Pallets; Skids; Platforms with feet, i.e. handled together with the stack

Definitions

  • the invention relates to a device for transferring a partial stack of sheet material from an entire stack to a further processing station, in particular a vibrating station, with a device for transferring the partial stack to a device for breaking up the partial stack and a device for transferring the broken partial stack to the further processing station.
  • breaking open is to be understood to mean the separation of the individual sheet layers which, for example, adhere to one another due to atmospheric pressure, static charging, adhesive effect by applying paint, etc.
  • Such a device is known from DE-A-27 23 162.
  • a partial stack is removed from an entire stack by means of grippers and moved to a vibrating station.
  • the partial stack is broken up during transport to the vibrating station. This is a prerequisite for the fact that the individual sheet layers can be displaced relative to one another in the vibrating station, whereby an exact alignment of the individual sheet layers is possible.
  • the break up of the partial stack takes place by a swiveling movement of the grippers which grip the partial stack on the outside, with which the sheet stack is deformed from a flat into a curved shape, which leads to the relative movement of the individual sheet layers.
  • the table part is pivoted downward with the stack clamped, which leads to flaking of the stack, then a further clamping element assigned to the remaining table is lowered onto the stack and the first clamping element is opened, so that after returning the table part to the horizontal starting position of the stack in its scaly shape remains.
  • the pivotable table part is pivotable about a stationary axis, while the other table part associated with the remaining table is horizontally displaceable relative to the latter.
  • the object of the present invention is to provide a device of the type mentioned which is structurally simple and which provides an adjacent arrangement of the entire stack and the further processing station, with which the respective partial stack can be transferred within a very short time.
  • the device for breaking up the partial stack has a table mounted in a movable frame, which has at least in the area of one end a table part that can be folded up from the horizontal table plane, and in the frame above the table part one in contact with the table part assigned area of the sub-stack can be brought pressure element, wherein the table in a first end position for taking over the sub-stack is moved into the overall stack between the sub-stack and the remaining stack and is positioned in a second end position above the further processing station.
  • the table serves on the one hand as a means of transport for the partial stack, on the other hand the at least one foldable table part of the table, in cooperation with the associated pressure elements, forms the device for breaking up the partial stack. Because the table on the one hand can be completely retracted into the stack between the remaining stack and the partial stack, and on the other hand can be positioned directly above the further processing station, there is the possibility of the entire stack and the further processing station to be positioned substantially adjacent to one another.
  • the device can be structurally simple, because the transfer of the partial stack to the further processing station and the breakup of the partial stack takes place essentially through the table or the table associated elements, apart from auxiliary elements which transfer the partial stack onto the table or from the table lose weight.
  • the partial stack is expediently transferred to the device for breaking up the partial stack by means of at least one take-over gripper which, after separating the partial stack, grips it in particular on the side facing away from the further processing station and moves it slightly over the remaining stack in the direction of the further processing station.
  • the table on the side facing the entire stack is advantageously provided with a drivable conveying roller which, after passing under the protruding part of the partial stack, supports its being pushed onto the table when the table is moved in between the remaining stack and the partial stack.
  • the partial stack can be broken open.
  • the interaction of the pressure element with the partial stack is essential here.
  • the individual sheets primarily consisting of paper, cardboard, plastic film or the like, which can be printed or unprinted.
  • the pressure element either comes into contact with the assigned area of the partial stack by its lowering movement or the pivoting movement of the table part. When the pressure element acts, the table part is folded back into the table plane. Depending on an action or a lack of action on that area of the Stack, which is facing away from the fold-up table part, can be broken open differently. In principle, it is sufficient to achieve the break-open effect if only one end of the table is provided with a table part that can be folded up.
  • the table has two table parts which can be pivoted in the region of opposite table ends about pivot axes arranged parallel to one another and a pressure element which can be brought into contact with the partial stack is provided above each table part. It is assumed that two fold-up table parts move the partial stack in opposite edge areas from the table level, which has the advantage that the partial stack is broken open in both edge areas and, in addition, the counter-moving table parts counteract a displacement of the partial stack during the folding up of the table parts .
  • the sequence of operations also results when using two table parts
  • Different possibilities with regard to the action on the partial stack by means of a pressure element assigned to the edge area of the partial stack or to pressure elements assigned to each edge area For example, provision is made to act only on an edge region of the partial stack by means of a pressure element. This leads to the previously described displacement of the individual sheet layers of the partial stack, which is essentially parallelogram-shaped after the table parts have been folded back. There is also the possibility that the folding back of both table parts into the table plane takes place with pressure elements acting, in particular that the folding back takes place simultaneously. Such action of the pressure elements leads to the fact that the upper sheet layers are stretched in a less curved arc between the pressure elements than the lower sheet layers and the sheet layers thus tend to separate from one another.
  • the compressive force of the respective pressure element acting on the stack should be dimensioned such that the sheet layers facing it can slip under the sheet before it reaches the tensile strength.
  • the pressure elements are advantageously designed as rotatable rollers, which extend in particular over the entire narrow side of the table.
  • the pressure elements should be provided with braking devices, in particular with braking devices that can be adjusted with regard to the braking torque.
  • the braking torque of the rollers must be dimensioned so that they roll off before the tear limit of the sheet layers is exceeded.
  • the braking torques can be introduced, for example, by means of disc springs which can be preloaded and act on the rollers in the region of the bearings.
  • the two table parts receive a center table part between them and each table part is assigned a bridge segment which partially covers the respective pivotable table part and is pivotably mounted in this or the center table part parallel to the pivot axis of the pivotable table part.
  • the partial stack on the table is expediently broken open while the table is being moved to the further processing station.
  • at least one depositing gripper preferably grips this on the side of the partial stack facing away from the entire stack, and then the table is again in the direction of the Move the entire stack between the newly separated partial stack and the remaining stack, as soon as the table has moved out from under the partial stack gripped by the depositing gripper, the partial stack comes into contact with the further processing station.
  • the processing step assigned to this station is carried out after the release gripper has been released; at the same time, the next partial stack is transferred to the table and the partial stack is broken open.
  • Figure 1 shows an overall stack 2 arranged on a lifting pallet 1, which consists for example of printed paper sheets.
  • a vibrating station 3 is arranged directly adjacent to the entire stack 2, with a known, elevatable, lowerable and inclinable vibrating table 4.
  • the purpose of the device according to the invention and to be described in more detail below is to remove a partial stack from the entire stack 2 and break it open, so that the individual sheets of the partial stack 5 can be shaken to the exact edge after being deposited on the vibrating table 4.
  • a buffer shelf or a cutting machine for example, can be connected to the vibrating station 3.
  • a stationary support frame 7 with upper and lower, horizontally running guides 7a, 7b is arranged laterally and partially above the entire stack 2 and the vibrating station 3.
  • a transfer gripper 8 which can be brought into contact with the stack side facing away from the vibrating table 3 and which, in relation to the sheet plane, can be moved vertically and horizontally.
  • the transfer gripper 8 has a fixed support plate 9 and a clamping plate 10 arranged parallel to it, which is adjustable in the direction of the support plate 9 and in the opposite direction by means of adjustment elements (not shown).
  • a blowing nozzle 11 is also mounted, this is located adjacent to the transfer gripper 8 and is also horizontally and vertically movable.
  • the air outlet of the blowing nozzle 11 is directed towards the side of the entire stack 2 facing away from the vibrating station.
  • a hook-shaped hold-down device 12 is assigned to the opposite side of the entire stack 2 and is likewise arranged to be horizontally and vertically movable in the support frame 7.
  • a frame 13 is mounted so as to be horizontally displaceable.
  • the frame 13 receives a horizontally oriented table 15, which forms an essential element of the device for breaking up the partial stack 5.
  • the frame 13 can be moved horizontally by means of force means which are not illustrated in any more detail; the table 15 which is firmly connected to the lower region of the frame 13 can thus be moved horizontally.
  • FIGS 2 and 3 illustrate in detail the storage and design of the table 15, which is constructed essentially symmetrically with respect to the planes 17 and 18 perpendicular to the image planes.
  • the table 15 has a center table part 19 and two table parts 21 which adjoin directly on the end faces of the center table part 19 opposite in the longitudinal direction of the table 15 and can be pivoted about axes 20.
  • the middle table part 19 is in each case adjacent to the table parts 21 in the area of its support plane, that is to say above, provided with a recess 22 and the respective table part 21 also above and adjacent to the middle table part 19 with a recess 23.
  • the respective recess has a bridge segment 25 which can be pivoted about an axis 24.
  • the strength of the table parts 21 and the bridge segments 25 and the dimensions of the recesses 22 and 23 are dimensioned such that when the table parts 21 are pivoted in and thus also the bridge segments 25 are pivoted in, the surface of the center table part 19 forms a plane with the upper surfaces of the table parts 21 and bridge segments 25.
  • the bridge segments 25 slide with their free ends 26 in the recesses 23 until they reach the undercut 27 in each case, when the maximum position of the table parts 21 swung out by an angle of approximately 55 ° is reached Table part 21 come to rest.
  • FIGS. 2 and 3 illustrate the mounting of the table 15 in the frame 13.
  • the frame 13 has a horizontal support 31 which extends perpendicularly to the longitudinal guides 7a and 7b up to almost the opposite end of the table 15, on the vertical guides 32 which are arranged at a distance from one another and which extend almost over the entire width of the table 15, vertically movable portal frame 33 is guided.
  • the portal frame 33 essentially consists of a horizontally arranged frame part 34, which receives the guides 32 and can be raised and lowered by means of a pneumatic cylinder 35 on the support side.
  • the portal frame 33 On each of the two long sides of the table 15, the portal frame 33 also has a downwardly directed support frame part 36, in the end points of which supports 37 are pivotally mounted about pivot axes 38.
  • the position of the pivot axes 38 coincides with the position of the bearing axes 20 for the table parts 21.
  • two supports 27 assigned to a table part 21 are connected by means of a cross member, between each of these and the frame part 34 of the portal frame 33 a pivotably mounted pneumatic cylinder 39 engages to pivot the supports 37.
  • a pressure roller 40 is mounted between assigned carriers 37 in the region of the carrier ends parallel to the pivot axes 38 and thus extends almost over the entire width of the table 15.
  • the two pressure rollers 40 are provided with adjustable braking devices, not shown, for example in the form of disc springs, so that they can rotate when a defined torque is exceeded.
  • each support 37 is assigned a pivotably mounted pneumatic cylinder 41, which receives a relief hook 42, which can be brought into operative connection with a holding pin 43 assigned to the respective table part 21.
  • the relief hook 42 is designed such that it is pivoted out of the way of the holding pin 43 in the extended state by contact with a stop pin 44.
  • two bridge segments 25 are arranged next to one another, each of which is approximately 1/4 as wide as the table 15.
  • a further pneumatic cylinder 45 is mounted in the portal frame 33 on one side of the table. in the plane 17 movable hold-down device 46.
  • FIG. 2 illustrates that the table 15 is provided on the end face facing the entire stack 2 with a conveyor roller 47 for pushing the partial stack 5 onto the table 15.
  • the storage of the conveyor roller 47 in the table 15 is not clarified, the conveyor roller 47 can be driven clockwise and extends essentially over the entire width of the table 15.
  • the entire stack 2 is first raised to such a level that the lowest sheet position of the partial stack 5 to be removed comes to lie slightly higher than the surface of the table 15. It is then moved by a corresponding vertical movement, possibly superimposed by a horizontal movement , the transfer gripper 8 with its support plate 9 brought to the level of the lowest sheet position of the partial stack 5 and the clamping plate 10 move so far from the support plate 9 that the two plates 9 and 10 can accommodate the partial stack 5 between them.
  • the transfer gripper 8 is then moved into the entire stack 2, separating the partial stack 5 from the remaining stack 6, and then the transfer gripper 8 is closed.
  • the hold-down device 12 is moved into the gap between the partial stack 5 and the remaining stack 6 and lowered onto the remaining stack 6, so that the partial stack 5 can be moved in the direction of the vibrating table 4 and the table 15 by means of the transfer gripper 8. This process is supported by the blowing nozzle 11, which blows air between the partial stack 5 and the remaining stack 6.
  • the table 15 located slightly below the level of the partial stack 5 becomes in when the table parts 21 are retracted and the supports 37 are pivoted up (support position according to FIG. 2) Direction of the total stack 2 moves.
  • the entire stack 2 is lowered so that the end of the partial stack 5 facing the conveying roller 47 rests thereon (FIG. 5).
  • the table 15 is moved further between the partial stack 5 and the remaining stack 6 until it has penetrated the entire stack 2 and the partial stack 5 rests on the table 15 symmetrically to the plane 17 (FIG. 6). From this position, the transfer gripper 8 moves back into its rest position, furthermore the hold-down device 12 is released and the blowing nozzle 11 is deactivated. While the table 15 is in the area of the remaining stack 6, sheet material deposited on the vibrating table 4 can be vibrated following a previous cycle.
  • the partial stack 5 can already be broken open in a position of the table 15 above the remaining stack 6, which is illustrated in FIG. 7.
  • the partial stack 5 lying on the table 15 forms a closed block, that is to say the individual sheets 48 cannot easily be shifted one above the other, which is a prerequisite for aligning the partial stack 5 precisely in the subsequent vibrating table 4. Therefore, after the stack 5 has been placed on the table 15, the pneumatic cylinders 30 are acted upon, which causes the table parts 21 and thus also the bridge segments 25 to fold up into the position likewise shown in FIG. In this position, as can be seen from the illustration in FIG. 7, the sheet layers are increasingly displaced from the neutral plane 17 to the edges 49, so that the block formation is already eliminated in the displacement area.
  • the two pressure rollers 40 are lowered onto the partial stack 5 in the region of the two edges 49 by actuating the pneumatic cylinders 39.
  • the extended relief hook 42 engage behind the retaining pins 43; by retracting the relief hook 42, the pressure force of the pressure rollers 40 on the partial stack can be adjusted to a desired level, whereby the partial stack 5 is clamped in its edge regions between the pressure rollers 40 and the table parts 21. If the table parts 21 and thus the bridge segments 25 are now pivoted back, with simultaneous tracking of the pressure rollers 40 by acting on the pneumatic cylinders 39, this causes the individual sheets 48 to stretch from the lower to the upper sheet layers and thus separate from one another.
  • air can additionally be blown between the individual sheets 48 by means of a large number of air nozzles 50 (FIG. 3) arranged laterally on the table 15.
  • the set braking torque of the pressure rollers 40 is exceeded when the upper sheet layers are fully tensioned, so that they roll outwards on the top sheet 48.
  • the relief hooks 42 are extended, whereby they come out of engagement with the holding pins 43, then the supports 37 can be pivoted up by means of the pneumatic cylinders 39, so that the partial stack 5 is now fed to the vibrating station 3 could be.
  • the break-open process is repeated again, that is to say the table parts 21 are extended again, the pressure roller 40 is lowered again, possibly even after the partial stack 5 has been previously rotated on the table 15 by 90 °.
  • FIG. 8 illustrates that the table 15 can already be moved into its other end position above the vibrating station 3 during the breaking process. As soon as this position has been reached, the next partial stack 5 can already be separated from the remaining stack 6 by the transfer gripper 8 again acting.
  • FIGS. 9 and 10 illustrate a section of the method which lends itself particularly to the breakup process described above.
  • the table parts 21 and the bridge segments 25 are to be pivoted again into the unfolded position shown in FIG. 7, but only the pressure roller 40 assigned to the right edge 49 is then lowered onto the partial stack 5 (FIG. 9) or the pressure roller 40 assigned to the left edge 49 onto the partial stack 5 (FIG. 10).
  • the pressure roller 40 assigned to the respective edge 49 fixes this stack area, so that the partial stack 5 is present in the form of a parallelogram when the table parts 21 and bridge segments 25 are retracted.
  • Such breaking open is expedient if the partial stack 5 is then to be shaken in the vibrating table 4, lying on the left (FIG. 9) or on the right (FIG. 10).
  • FIG. 11 shows the partial stack 5 broken open with respect to the left-hand system when the table parts 21 are folded in.
  • a depositing gripper 51 which can be moved in accordance with the transfer gripper 8 is moved into a position which grips the partial stack 5 on the right.
  • the table 15 is now moved in the direction of the entire stack 2, which was previously lowered so far that the conveyor roller 47 of the table 15 can pass under the next projecting partial stack 5.
  • the already opened partial stack 5 is deposited by a substantially vertical movement of the depositing gripper 51 onto the previously shaken sheet layers picked up by the vibrating table 4 (FIG. 12).
  • FIG. 13 illustrates that during the takeover of the next partial stack 5 on the table 15 and following the shaking of the partial stack 5 last placed on the vibrating table 4, the shaken total stack 52 is clamped on one side by means of a hold-down device 53 and then an air squeezing roller 54 is moved over the shaken total stack 52. While the partial stack 5 last removed from the entire stack 2 is being broken open, the vented overall stack 52 can be fed to a buffer shelf 56 or a cutting machine, for example by means of a gripper 55 (FIG. 14) or a slide 57 (FIG. 15).
  • the device described is not limited to the handling of sheets of paper, but generally relates to sheet-like material.
  • sheet-like goods made of paper, cardboard, plastic film or the like in unprinted or printed form

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Discharge By Other Means (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
EP90119267A 1989-10-07 1990-10-08 Vorrichtung zur Übergabe eines Teilstapels aus blattförmigem Gut von einem Gesamtstapel zu einer Weiterverarbeitungsstation Expired - Lifetime EP0422562B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3933626 1989-10-07
DE3933626A DE3933626C1 (enrdf_load_stackoverflow) 1989-10-07 1989-10-07

Publications (3)

Publication Number Publication Date
EP0422562A2 EP0422562A2 (de) 1991-04-17
EP0422562A3 EP0422562A3 (en) 1992-02-26
EP0422562B1 true EP0422562B1 (de) 1995-04-05

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Application Number Title Priority Date Filing Date
EP90119267A Expired - Lifetime EP0422562B1 (de) 1989-10-07 1990-10-08 Vorrichtung zur Übergabe eines Teilstapels aus blattförmigem Gut von einem Gesamtstapel zu einer Weiterverarbeitungsstation

Country Status (5)

Country Link
US (1) US5096370A (enrdf_load_stackoverflow)
EP (1) EP0422562B1 (enrdf_load_stackoverflow)
JP (1) JPH0825650B2 (enrdf_load_stackoverflow)
DE (2) DE3933626C1 (enrdf_load_stackoverflow)
ES (1) ES2070969T3 (enrdf_load_stackoverflow)

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JP1645098S (enrdf_load_stackoverflow) * 2018-12-31 2019-11-05
JP1651030S (enrdf_load_stackoverflow) * 2018-12-31 2020-01-27
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Also Published As

Publication number Publication date
DE59008840D1 (de) 1995-05-11
EP0422562A2 (de) 1991-04-17
DE3933626C1 (enrdf_load_stackoverflow) 1991-03-14
EP0422562A3 (en) 1992-02-26
JPH0825650B2 (ja) 1996-03-13
ES2070969T3 (es) 1995-06-16
US5096370A (en) 1992-03-17
JPH03133854A (ja) 1991-06-07

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