EP3845475A1 - Dispositif et procédé d'empilage des boîtes pliables et des découpes dans un puit d'empilage - Google Patents

Dispositif et procédé d'empilage des boîtes pliables et des découpes dans un puit d'empilage Download PDF

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Publication number
EP3845475A1
EP3845475A1 EP20212652.0A EP20212652A EP3845475A1 EP 3845475 A1 EP3845475 A1 EP 3845475A1 EP 20212652 A EP20212652 A EP 20212652A EP 3845475 A1 EP3845475 A1 EP 3845475A1
Authority
EP
European Patent Office
Prior art keywords
hold
stacking shaft
down device
drive
lifting table
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
EP20212652.0A
Other languages
German (de)
English (en)
Other versions
EP3845475C0 (fr
EP3845475B1 (fr
Inventor
Reiner Deiss
Jan Undeutsch
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.)
Wilhelm B A H M Ue L L E R Maschinenbau Praezisionswerkzeuge GmbH
Original Assignee
Wilhelm B A H M Ue L L E R Maschinenbau Praezisionswerkzeuge GmbH
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
Application filed by Wilhelm B A H M Ue L L E R Maschinenbau Praezisionswerkzeuge GmbH filed Critical Wilhelm B A H M Ue L L E R Maschinenbau Praezisionswerkzeuge GmbH
Publication of EP3845475A1 publication Critical patent/EP3845475A1/fr
Application granted granted Critical
Publication of EP3845475C0 publication Critical patent/EP3845475C0/fr
Publication of EP3845475B1 publication Critical patent/EP3845475B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65H31/00—Pile receivers
    • B65H31/04—Pile receivers with movable end support arranged to recede as pile accumulates
    • B65H31/08—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled one above another
    • B65H31/10—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled one above another and applied at the top of 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
    • B65H31/00—Pile receivers
    • B65H31/32—Auxiliary devices for receiving articles during removal of a completed pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/422—Handling piles, sets or stacks of articles
    • B65H2301/4223—Pressing piles
    • 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
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • B65H2701/1764—Cut-out, single-layer, e.g. flat blanks for boxes
    • 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
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • B65H2701/1766—Cut-out, multi-layer, e.g. folded blanks or boxes

Definitions

  • the invention relates to a device and a method for stacking folding box blanks or folding box tubes in a stacking shaft, the folding box blanks being transported at high frequency in a "quasi-continuous" flow in the stacking space. There they should be piled up to form a stack before the stack is transported out of the stacking shaft in one transport direction.
  • the ones from the EP 1 251 093 A2 or B1 known device comprises, in addition to a lifting table that can be moved in the vertical direction of the stacking shaft, two temporary supports that alternately or sequentially carry the stack of folding box blanks that are being formed until a finished stack is located on a lifting table in its lowest position is transported away from the stacking shaft. Then the lifting table that has become free is moved upwards again in the vertical direction and takes over the stack that is being formed from the active temporary support.
  • the disadvantage of this device is that it is limited with regard to its motion sequences and thus with regard to the method it carries out. As a result is that the process of destacking cannot be adapted within the wide limits required today.
  • the device is relatively complex, since in addition to the lifting table it requires two temporary intermediate shelves with the associated drives and a correspondingly complex control.
  • the invention is based on the object of providing a device and a method which makes it possible to uncouple extremely small and small folding box blanks in a process-reliable manner in the stacking shaft of a device for destacking into a stack without tilting the folding box blanks.
  • the method according to the invention should moreover be adaptable very flexibly to different folding box blanks or folding box tubes, so that almost all shapes and sizes of folding box blanks can be stacked.
  • a device for stacking folding boxes or folding box tubes comprising a stacking shaft, a lifting table, only one clipboard, a hold-down device, a first drive for the lifting table, a second drive for the clipboard and a third drive for the Hold-down released, the stacking shaft being delimited in a transport direction at its front end by a first stop and at its rear end by a second stop, the stacking shaft being limited downwards alternately by the lifting table and the intermediate storage
  • the first drive is designed as a single-axis drive that controls the position of the lifting table in the stacking shaft
  • the second drive being designed as a two-axis drive so that it controls the position of the clipboard along a predetermined and repetitive path
  • the third drive is designed as a two-axis drive in such a way that it controls the position of the hold-down device along a predetermined and repetitive cyclical path.
  • the device according to the invention in contrast to the prior art cited above, only one clipboard is required, which significantly reduces the outlay on equipment. Because the device according to the invention has a two-axis drive both for the clipboard and for the hold-down device, it is possible to control the path on which the hold-down device and the clipboard move as freely as possible, so that according to the size of the folding box blanks to be stacked and their other properties, an optimal control of the paths of the clipboard and hold-down can take place. As a result, a difference in height between the upper edge of the first stop can be kept almost constant during the stacking process, regardless of whether the stack being formed is carried by the hold-down device, the intermediate shelf or the lifting table.
  • the hold-down device has two functions. It serves as a temporary clipboard and after a short time transfers this function to the actual clipboard.
  • the "starting position" of the hold-down device is slightly below an upper edge of the first stop of the stacking shaft and moves gradually downwards, so that the upper end of the stack forming on the clipboard is always at a small and constant distance from the upper edge of the first stop of the stacking shaft is located. This ensures that the folding box blanks "flowing in” via the first stop of the stacking shaft cannot tilt and the stack is formed undisturbed.
  • the hold-down device is then quickly moved downwards, ie in the direction of the lifting table located at the bottom of the stacking shaft. As a result, the hold-down device "transfers" the stack that is being formed to the clipboard.
  • the lifting table moves up and takes over the stack that forms from the intermediate storage.
  • the hold-down device moves down so far that it compresses the (finished) stack on the lifting table. This stack is then moved out of the stacking shaft in the transport direction with the aid of conveyor belts. The hold-down follows the transport movement of the stack. This ensures that the stack leaves the stacking shaft without any problems. Then, ie when the prongs of the hold-down device have been moved completely out of the stacking shaft in the transport direction, the hold-down device moves back up into its starting position. At the same time, the new stack mentioned above is created on the clipboard.
  • the lifting table moves up and takes over the stack that forms from the intermediate storage.
  • the clipboard is then immediately pulled out of the stacking shaft, preferably against the direction of transport. Outside the stacking shaft, the clipboard is returned to its starting position in the direction of the Y-axis, i.e. at the desired distance from the upper edge of the first stop, before the method according to the invention starts again from the beginning.
  • the device according to the invention according to claim 1 enables this method to be carried out.
  • the method is relatively simple and the requirements for the device are relatively low. Because of the two-axis drives of the hold-down device and the clipboard, the movements of the hold-down device and also the clipboard in the transport direction can be controlled independently of one another orthogonally. This makes it easier to control them and to adapt the process to different folding box blanks.
  • the mutually independent movement axes of the second drive and the third drive preferably run orthogonally or parallel to a transport direction of the device.
  • the drives or the drives of the axes of movement can for example be electrical, electromechanical, pneumatic or hydraulic. Combinations of these drives are also possible.
  • An electromechanical drive is, for example, a drive with a toothed belt and an electric motor, which can be designed as a stepper motor or servo motor. Drives with ball screw spindles and a server motor or a stepper motor are also possible. Linear motors are also an option.
  • the invention can be implemented with different drive concepts for the movement axes.
  • one or several conveyor belts are arranged and the lifting table is lowered so far that the stack is seated on the beginning of the conveyor belt or belts. As soon as the conveyor belt is driven, the stack is transported out of the stacking shaft.
  • FIG 1 is a greatly simplified side view of an embodiment of a device according to the invention for stacking shown.
  • the device comprises a first stop 1 and a second stop 3 running parallel thereto.
  • the stops 1, 3 are adjustable in terms of their spacing from one another, so that they can be adjusted to the length of the in Figure 1 folding box blanks, not shown, can be matched.
  • the stack is formed between the first stop 1 and the second stop 3, as shown below on the basis of FIG Figures 4ff will be explained.
  • the first stop 1 can be designed as a vibrating wall.
  • the stops 1, 3 are not designed as a continuous wall, but rather they have slots through which the prongs of a hold-down device (not shown in FIG Figure 1 ) and a clipboard 15 can be moved through into the stacking shaft 5.
  • the stacking shaft 5 is delimited at the bottom by a transport device 7, which is designed here as a transport belt or a plurality of transport belts 9 running parallel to one another.
  • the conveyor belts 9 run over rollers 11, only one of which is shown, and are driven via one of the rollers 11 if necessary.
  • an X-axis and an XY-axis are entered.
  • the origin of this coordinate system lies at 13.
  • a transport direction T is also shown. It runs parallel to the X axis; the transport device 7 transports a stack (not shown) of folding box blanks in the direction of the transport direction T and thus also in the direction of the X-axis out of the stacking shaft 5.
  • a clipboard 15 is shown.
  • the clipboard 15 comprises several fingers or prongs running parallel to one another, only one of which can be seen.
  • the fingers protrude through slots (not visible) of the first stop 1 in the in Figure 1 position shown in the stacking shaft 5 and thus form with their upper edge a support for folding box blanks which flow into the stacking shaft 5 from the top left approximately in the direction of arrow 17.
  • the clipboard 15 is arranged on a first slide 17 which is arranged or guided along a linear guide in the direction of the Y-axis on a frame 19 so as to be movable.
  • the frame 19 can be moved on a first guide rail in the direction of the X-axis.
  • the travel of the carriage 17 in the direction of the Y-axis and of the frame 19 in the direction of the X-axis are indicated by double arrows 23, 25.
  • the frame 19 and with it the clipboard 15 can be moved far in the direction of the negative X-axis so that the clipboard 15 is completely outside the stacking shaft 5.
  • the travel path of the clipboard 15 or of the carriage 17 only has to be comparatively small. In practice, a travel distance of 15 or 20 cm in the direction of the Y-axis is sufficient.
  • the arrow 25 is significantly longer than the double arrow 23.
  • FIG. 10 is the same device also in the same side view as in FIG Figure 1 shown. However, the clipboard 15, the carriage 17 and the frame 19 are not shown. Rather, further components that belong to the device according to the invention are shown and are explained in detail below.
  • a lifting table 27 is shown in the stacking shaft 5.
  • the lifting table 27 can, as indicated by the arrows, be moved in the direction of the Y-axis.
  • a lowermost position of the lifting table 27 is reached when the top of the lifting table is below the conveyor belt 9 of the transport device 7. This lowest position is shown by a broken line.
  • the lifting table 27 is also not as continuous surface, but it has several parallel partial surfaces which are arranged and dimensioned so that these partial surfaces do not collide with the conveyor belts 9 of the transport device 7 when the lifting table 27 is lowered into the lowest position.
  • a hold-down device 29 is indicated in the Figure 2 to the right of the second stop 3, ie outside of the stacking shaft 5, a hold-down device 29 is indicated.
  • the hold-down device 29, like the clipboard 15, has a two-axis drive. This means that it can be moved in the direction of the Y-axis and in the direction of the X-axis via separate drives. As with the clipboard 15, these drives are not shown.
  • the carriages and guides to which the hold-down device 29 is attached and guided along two axes are also not shown.
  • the arrangement of the slide, frame and guides is in principle similar to that of the clipboard 15.
  • the hold-down device 29 is attached to a slide which is guided on a frame such that it can be displaced in the direction of the Y-axis.
  • the frame is arranged on a further linear guide or guide rail so that it can be moved in the direction of the X-axis.
  • the hold-down device 29 is retracted into the stacking shaft 5.
  • the upper edge of the hold-down 29 is an amount .DELTA.Y below the upper edge of the first stop 1.
  • This amount .DELTA.Y is determined depending on the size or length of the folding box blanks 31, which from the top left in the Figure 4 (see arrow 17) flow into the stacking shaft.
  • the folding box blank 31 can also be "pressed" downwards by a correspondingly directed air flow from a blower (not shown).
  • FIG. 5 a very similar situation is shown, with the difference that several folding box blanks 31 are already on the hold-down device 29.
  • the hold-down device 29 is located opposite the Figure 4 in a slightly lowered position, so that the topmost folding box blank 31 is located below the upper edge of the first stop 1 by approximately the same amount ⁇ Y in both figures. This is achieved by lowering the hold-down device 29 continuously or in steps.
  • the amount by which the hold-down 29 is lowered corresponds roughly to the height of the stack of folding box blanks 31 that is being formed. In other words: whenever another folding box blank has reached the stacking shaft 5, the hold-down is lowered by an amount corresponding to the thickness of a folding box blank .
  • the clipboard 15 moves from the left, ie in the direction of the positive X-axis, slightly below the hold-down 29 into the stacking shaft 5.
  • the intermediate storage 15, like the hold-down device 29, has several parallel prongs which can move into the stacking shaft 5 through complementary slots in the first stop 1.
  • the lifting table 27 is still up.
  • a stack 33 is present between the lifting table 27 and the hold-down device 29.
  • the distance between the lifting table 27 and the hold-down device 29 is controlled so that the height of the Stack 33 is less than the gap LH (see Figure 1 ) between the conveyor belt 9 and the lower edge of the second stop 3. Then it is possible to move the stack 33 after the lifting table 27 (and with it the stack 3 and the hold-down device 29) has reached its lower end position (see FIG Fig. 7 ) has reached to be transported out of the stacking shaft 5 to the right.
  • the clipboard 15 carries the stack of folding box blanks 31 that is building up.
  • the hold-down device 29 has moved downwards and presses the stack 33 of folding box blanks together, which is located on the lifting table 27 or on the conveyor belt 9.
  • the stack 33 is compressed by the hold-down device 29 to such an extent that it can be transported out of the stacking shaft to the right with the aid of the conveyor belt 9 or conveyor belts 9 without colliding with the lower edge of the second stop 3.
  • the stack 33 is transported out of the stacking shaft 5 by appropriately controlling the drive of the conveyor belt 9 and the hold-down device 29.
  • the stack 33 on the conveyor belt 9 and the hold-down device 29 are synchronized in the transport direction T (to the right in FIG Figure 7 ) is moved in the direction of the positive X-axis, so that the stack is pressed together by the hold-down 29 even during transport out of the stacking shaft 5.
  • the movement of the conveyor belt 9 and the hold-down device 29 takes place at the same speed, so that the stack 33 is not shifted or changed in any other way when it is transported out of the stacking shaft.
  • the lifting table 27 moves to just below the clipboard 15, so that when the clipboard 15, as in FIG Figure 9 shown, is pulled out of the stacking shaft 5 in the direction of the negative X-axis, the stack 33 being formed lands on the lifting table 27 and is carried by it.
  • the holding-down device 29 and the intermediate storage device 15 move back into the starting positions, ie the holding-down device 29 has the same height as in FIG Figure 4 and the clipboard 15 has the same height as in the Figure 7 shown.
  • the various drives are controlled via a control device (not shown) that coordinates and controls or regulates the various movements of the lifting table 27, drive 7, hold-down device 29 and clipboard 15.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
EP20212652.0A 2020-01-03 2020-12-09 Dispositif et procédé d'empilage des boîtes pliables et des découpes dans un puit d'empilage Active EP3845475B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020100067.7A DE102020100067A1 (de) 2020-01-03 2020-01-03 Vorrichtung und Verfahren zum Abstapeln von Faltschachteln und Zuschnitten in einem Stapelschacht

Publications (3)

Publication Number Publication Date
EP3845475A1 true EP3845475A1 (fr) 2021-07-07
EP3845475C0 EP3845475C0 (fr) 2024-07-17
EP3845475B1 EP3845475B1 (fr) 2024-07-17

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ID=73789861

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20212652.0A Active EP3845475B1 (fr) 2020-01-03 2020-12-09 Dispositif et procédé d'empilage des boîtes pliables et des découpes dans un puit d'empilage

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EP (1) EP3845475B1 (fr)
DE (1) DE102020100067A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1251093A2 (fr) 2001-04-17 2002-10-23 Bahmüller Maschinenbau Präzisionswerkzeuge GmbH Dispositif de sortie de piles des boítes pliantes
JP4176210B2 (ja) * 1998-10-30 2008-11-05 三菱重工業株式会社 カウンタエゼクタ
JP2009184325A (ja) * 2008-02-08 2009-08-20 Ishikawa Seisakusho Ltd シート状段ボールの計数排出装置
EP2383108A1 (fr) * 2010-04-29 2011-11-02 Kabushiki Kaisha Isowa Éjecteur de compteur de machine de fabrication de boîtes en carton

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5014974A (en) * 1990-01-16 1991-05-14 Numerical Concepts, Inc. In-line, continuous paper batching system
FR2715911B1 (fr) * 1994-02-07 1996-04-19 Martin Sa Station d'empilage, de séparation et d'évacuation de lots d'éléments en plaque empilés en sortie d'une machine de transformation de tels éléments.
US6497549B2 (en) * 2000-12-27 2002-12-24 J & L Development, Inc. Counter-ejector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4176210B2 (ja) * 1998-10-30 2008-11-05 三菱重工業株式会社 カウンタエゼクタ
EP1251093A2 (fr) 2001-04-17 2002-10-23 Bahmüller Maschinenbau Präzisionswerkzeuge GmbH Dispositif de sortie de piles des boítes pliantes
JP2009184325A (ja) * 2008-02-08 2009-08-20 Ishikawa Seisakusho Ltd シート状段ボールの計数排出装置
EP2383108A1 (fr) * 2010-04-29 2011-11-02 Kabushiki Kaisha Isowa Éjecteur de compteur de machine de fabrication de boîtes en carton

Also Published As

Publication number Publication date
EP3845475C0 (fr) 2024-07-17
EP3845475B1 (fr) 2024-07-17
DE102020100067A1 (de) 2021-07-08

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