EP3095597A2 - Dispositif de pliage de sections de carton - Google Patents

Dispositif de pliage de sections de carton Download PDF

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Publication number
EP3095597A2
EP3095597A2 EP16170826.8A EP16170826A EP3095597A2 EP 3095597 A2 EP3095597 A2 EP 3095597A2 EP 16170826 A EP16170826 A EP 16170826A EP 3095597 A2 EP3095597 A2 EP 3095597A2
Authority
EP
European Patent Office
Prior art keywords
folding
drive shaft
carton blank
hook
folding hook
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
EP16170826.8A
Other languages
German (de)
English (en)
Other versions
EP3095597A3 (fr
EP3095597B1 (fr
Inventor
Uwe Kietzmann
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 Bahmueller Maschinenbau Praezisionswerkzeuge GmbH
Original Assignee
Wilhelm Bahmueller 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 Bahmueller Maschinenbau Praezisionswerkzeuge GmbH filed Critical Wilhelm Bahmueller Maschinenbau Praezisionswerkzeuge GmbH
Publication of EP3095597A2 publication Critical patent/EP3095597A2/fr
Publication of EP3095597A3 publication Critical patent/EP3095597A3/fr
Application granted granted Critical
Publication of EP3095597B1 publication Critical patent/EP3095597B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/52—Folding sheets, blanks or webs by reciprocating or oscillating members, e.g. fingers
    • B31B50/54—Folding sheets, blanks or webs by reciprocating or oscillating members, e.g. fingers operating on moving material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/262—Folding sheets, blanks or webs involving folding, leading, or trailing flaps of blanks

Definitions

  • the present invention relates to a folding hook and a device for folding cardboard blanks, which is for example in a folding box gluer.
  • Folding cartons are cut-to-size prefabricated boxes, which are delivered in a collapsed state by the manufacturer to processing companies to save space. There, the carton blanks are unfolded into the carton with simple hand movements or by machine.
  • the carton blanks are usually made of cardboard, preferably made of corrugated cardboard.
  • Some carton blanks include tabs that are folded by about 180 ° at the manufacturer. Most of these folded tabs are then glued to an adjacent part of the carton blank. These processes take place in folding box gluing machines. For this purpose, the area-trained carton blanks are conveyed in the transport direction by the gluing machine and processed during the process.
  • Vorderfalthaken For folding over the tabs on a front in the transport direction edge of the carton blank rotating devices are known, which are referred to as Vorderfalthaken.
  • Front catch and Schufalthaken are arranged in conventional machines each on a separate shaft, each having a separate drive (servo motor), which is controlled separately by a higher-level machine control.
  • Object of the present invention is to simplify the folding of front and rear flaps and to provide a particularly compact and inexpensive device.
  • the folding hook In the region of the convexly curved projection, the folding hook has a thickness D 16 which is greater than in the crescent-shaped region (D 16 > D 20 ). Therefore, the convexly curved projection of the folding hook according to the invention projects beyond the contour of a conventional rear folding hook on a side opposite the crescent-shaped and concave area.
  • folding hook according to the invention can serve alternately as Vorderfalthaken and as Hinterfalthaken.
  • the folding hook according to the invention first raises the tab on the front edge and then unfolds the flap located on the trailing edge.
  • the folding hook according to the invention takes over successively two functions and is therefore also referred to in the context of the invention as a combination folding hook.
  • the folding hook according to the invention is arranged on a rotating drive shaft.
  • a plurality of such combination folding hooks can be arranged at different positions in the processing line of the folding box gluing machine in order to successively be able to fold different flaps which are arranged next to one another at the front and rear edges.
  • At least two, preferably three folding hooks are arranged at a same angular distance as a folding hook arrangement on a drive shaft.
  • the arrangement of three folding hooks thus resembles a Triskele.
  • the drive shaft is controlled as a function of the transport speed and / or the position of the carton blank, thereby ensuring that the convexly curved projection and the substantially crescent-shaped shape of the folding hooks at the right time at a front and a rear flap of the Attack carton blank.
  • the drive shaft rotates stepwise and / or with different rotational speed. Assuming that the transport speed of the carton blank is done at a uniform speed, it may be necessary for effectively folding the tab that the drive shaft in certain periods of time, the folding hooks or only slowly move, or at certain times the folding hooks for a short time especially to move fast.
  • the drive shaft does not run at a constant speed.
  • the device according to the invention can have scanning devices for the carton blank and / or suitable sensors which determine the respective current position of the tab to be folded over.
  • the signals of the scanning devices or sensors are evaluated in a control device and depending on the determined result, the drive shaft is rotated by the drive in rotation.
  • FIG. 1 shows a Vorderfalthaken 10 of the prior art.
  • FIG. 1 are two Vorderfalthaken 10 offset by 180 ° to a common drive shaft 12 arranged with hexagonal cross-section.
  • the two Vorderfalthaken 10 are connected to each other by a chain link 14 and fixed by means of a clamping screw 15 to the drive shaft 12.
  • each have a convexly curved projection 16 is formed in FIG. 1 is formed annular.
  • the convexly curved projection 16 is usually pressed from below against a arranged at the front edge of a carton blank tab.
  • the tab is raised and moves against a fixed "obstacle", which causes the actual folding of this tab.
  • the transport movement of the carton blank supports or allows the folding of this tab only.
  • FIG. 2 shows two oppositely arranged Stromfalthaken 18 according to the prior art.
  • the Hinterfalthaken 18 is bent on its inside at least partially sickle-shaped.
  • the Hinterfalthaken 18 folds with its rounded tip 21 a at a trailing edge of a carton blank (not shown) tab.
  • the crescent-shaped region 20 is designed or curved so that the Schufalthaken 18 touches the tab only with its tip 21. This prevents the Schufalthaken 18 damaged the tab when folding.
  • the tip 21 is thus the actual effective range of the Schufalthakens 18, which at least partially rotated under a from the rear of the carton blank (seen in the transport direction) cut tab of a carton blank and then folds the tab by a further rotational movement of the Deutschenfalthakens 18 about the drive shaft 12 ,
  • the rotational movement of the drive axle 12 must be controlled so that the tip 21 of the Schufalthakens 18 at least briefly "overhauled" the rear end of the carton blank in the transport direction.
  • FIG. 3 shows three folding hooks 22 according to the invention, which are arranged offset by 120 ° to each other on a drive shaft 12. This arrangement is reminiscent of a so-called Triskele and is a preferred arrangement 23.
  • the combination folding hooks 22 according to the invention have features of a front folding hook 10 and a back folding hook 18 of the prior art.
  • a convexly curved projection 16 is formed at the free ends of the folding hook 22, wherein the folding hook on the convexly curved projection 16 has a thickness D 16 which is greater than a thickness D 20 in the crescent-shaped area 20.
  • the convexly curved projection 16, as well as in FIG. 1 be formed annular. The projection 16 serves to realize the Vorderfalthakenfunktion.
  • the folding hook 22 at its free end and on a concavely curved side of the crescent-shaped region 20, has a projection.
  • the folding hooks 22 in their course, in particular on the inside of the folding hook 22, a crescent-shaped portion 20 on.
  • the area 20 serves to realize the Deutschenfalthakenfunktion.
  • the tip 21 is formed only on the inside of the folding hook 22, that is, in continuation of the crescent-shaped portion 20. On the outside, where the convex curved projection 16 is present, no pronounced tip is present and also not required.
  • the folding hook 22 according to the invention thus represents aticiansfalthaken, which combines the functions of a Vorderfalthakens and a Schufalthakens.
  • FIG. 4 shows a part of a processing line in a plan view.
  • a folding or folding module 24 (hereinafter referred to as "module") are recessed in the conveyor belt 26 in grooves.
  • the transport belts 26 serve to convey a carton blank 28 through the module 24.
  • the transport direction (feed direction) is indicated by an arrow with the reference numeral 30.
  • the transport belts 26 are arranged offset to one another in part.
  • the transport belts 26 in the module 24 are laterally displaceable (see reference numeral 32) in order to adjust the module to the processing of different large carton blanks.
  • the module 24 is adapted to automatically fold on two sides of a carton blank 28 tabs 34, 34 'at the front edge and the trailing edge of the carton blank.
  • a fold line for the carton blank 28 is identified by the reference numeral 36.
  • the folding hooks 22 are arranged in the module 24, as seen in the transport direction 30, at two different positions 38, 38 'folding hooks 22 are arranged, wherein the folding hooks 22 at the position 38 of the folding over outer tabs 34, 34 'of the carton blank 28 is used. In the position 38 ', the folding hooks 22 are arranged for folding over tabs arranged in the interior of the carton blank.
  • FIG. 5a shows circulating the transport belt 26.
  • a flat trained cardboard blank 28 is placed, which is moved by the transport belt 26 in the transport direction 30.
  • the carton blank 28 has notches 42. Through these cuts 42, the folding tabs 34, 34 'are “divided”. In addition, the carton blank 28 has bent edges 44. Along these kink edges 44, the tabs 34, 34 'folded.
  • the folding hook arrangement 23 is arranged on a rotating drive shaft 12.
  • a direction of rotation of the drive shaft 12 is designated by the reference numeral 40.
  • one of the folding hooks 22 touches the tab 34 located at the front edge of the carton blank from below.
  • FIG. 5b the carton blank 28 has moved on and the drive shaft 12 has turned so far in the direction of rotation 40 that the convexly curved projection 16 at the free end of the folding hook 22 raises the front tab 34.
  • the tab 34 bends so far at the bend edge 44 that the tab 34 strikes a fixed fold-over roll 46 disposed above the carton blank 28 when the carton blank 28 is further transported through the module 24.
  • the Umklapprolle 46 then takes over the actual folding of the tab 34. Under folding it is a bend of the tabs 34, 34 'by significantly more than 90 °, preferably by about 180 °, understood. This process is in the FIG. 5c illustrated.
  • the Umklapprolle can also be used a brush or a hold-down rod.
  • FIG. 5d shows the completely folded flap 34.
  • the carton blank 28 has now been moved so far in the transport direction 30 that the folding hooks 22, the tab 34 can not reach.
  • the drive shaft 12 is temporarily stopped or rotates only very slowly. The transport of the carton blank 28 continues in the transport direction 30.
  • the drive shaft 12 In order to further fold over the tab 34 ', the drive shaft 12 must briefly perform a relatively fast rotational movement, so that the tip 21 of the folding hook 22' overtakes 'the moving carton blank 28 and as a result the tab 34' is folded forwards. This situation is in the FIG. 5f shown.
  • FIG. 5g the rotational movement of the folding hook assembly 23 is almost complete. Due to the sickle-shaped formation 20 of the folding hook 22 prevents the folding hook 22 the Umklappterrorism the rear tab 34 'bothers, or that the folding hook 22, the tab 34' is not damaged.
  • FIG. 5h the folding of the front flap 34 and the folding of the rear flap 34 'is completed.
  • the rotational movement of the folding hook arrangement 23 can be interrupted until a further carton blank 28 is brought onto the transport belt 26 in the region of the folding hook arrangement 23.
  • FIG. 6 an inventive arrangement of a Vorderfalthaken 10 and a Schufalthaken 20 on a common drive shaft 12 is shown.
  • the known from the prior art folding hooks 10, 20 are successively used.
  • the cost advantage and the saving of footprint are achieved.
  • the control of the drive shaft 12 is in this embodiment compared to the first embodiment according to the FIGS. 5a to h something else.
  • the performance [carton blanks / min] of both embodiments is similar.
  • FIG. 6 a combination according to the invention of a front-folding hook and a rear-folding hook is shown, which are arranged on a common shaft.
  • Both folding hooks are arranged on a common shaft.
  • Essential advantages of the invention namely saving space, reducing the number of waves and drives with the same functionality, also achieved.
  • folding hooks can be used, which are in and of themselves known from the prior art.
  • the front latch and the rear latch are designed as separate components.
  • the control of the common drive shaft can build on existing controls of front latch and the Schufalthaken (on separate drive shafts). This considerably simplifies and simplifies the integration into the machine control.

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  • Making Paper Articles (AREA)
  • Cartons (AREA)
EP16170826.8A 2015-05-22 2016-05-23 Dispositif de pliage de sections de carton Active EP3095597B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015209546.0A DE102015209546A1 (de) 2015-05-22 2015-05-22 Vorrichtung zum Falten von Kartonzuschnitten

Publications (3)

Publication Number Publication Date
EP3095597A2 true EP3095597A2 (fr) 2016-11-23
EP3095597A3 EP3095597A3 (fr) 2017-01-25
EP3095597B1 EP3095597B1 (fr) 2018-12-12

Family

ID=56119296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16170826.8A Active EP3095597B1 (fr) 2015-05-22 2016-05-23 Dispositif de pliage de sections de carton

Country Status (2)

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EP (1) EP3095597B1 (fr)
DE (1) DE102015209546A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1956268A1 (de) 1969-11-08 1971-06-03 Guschky & Toennesmann Kg Faltscheibe
US4544368A (en) 1984-05-10 1985-10-01 Labombarde Raymond A Case presenter apparatus and method
US20110092350A1 (en) 2009-10-21 2011-04-21 Wilkinson Richard W Systems and methods for folding

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1513297A (en) * 1921-10-31 1924-10-28 Adams Bag Company Paper-bag-making machine
US2879699A (en) * 1957-02-26 1959-03-31 Raymond A Labombarde Folding apparatus for leading flaps
DE1561432A1 (de) * 1967-06-10 1970-02-12 Waldhof Zellstoff Fab Faltvorrichtung fuer die in Transportvorrichtung hinten liegenden Klappen von Faltschachteln
US20010018389A1 (en) * 1999-04-21 2001-08-30 Michael D. Wallace Apparatus and method for automatically generating a cam cycle representing control signals used to execute a cam profile representing moyion of a hook for folding a back flap of a carton

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1956268A1 (de) 1969-11-08 1971-06-03 Guschky & Toennesmann Kg Faltscheibe
US4544368A (en) 1984-05-10 1985-10-01 Labombarde Raymond A Case presenter apparatus and method
US20110092350A1 (en) 2009-10-21 2011-04-21 Wilkinson Richard W Systems and methods for folding

Also Published As

Publication number Publication date
EP3095597A3 (fr) 2017-01-25
EP3095597B1 (fr) 2018-12-12
DE102015209546A1 (de) 2016-11-24

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