EP0458066A1 - Vorrichtung zum Falten von Blättern für eine Falt-Leimmaschine zur Herstellung von Packungen - Google Patents

Vorrichtung zum Falten von Blättern für eine Falt-Leimmaschine zur Herstellung von Packungen Download PDF

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Publication number
EP0458066A1
EP0458066A1 EP91106284A EP91106284A EP0458066A1 EP 0458066 A1 EP0458066 A1 EP 0458066A1 EP 91106284 A EP91106284 A EP 91106284A EP 91106284 A EP91106284 A EP 91106284A EP 0458066 A1 EP0458066 A1 EP 0458066A1
Authority
EP
European Patent Office
Prior art keywords
folding
sheet
rollers
roller
fold line
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.)
Withdrawn
Application number
EP91106284A
Other languages
English (en)
French (fr)
Inventor
Alain Seiler
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.)
Bobst Mex SA
Original Assignee
Bobst SA
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 Bobst SA filed Critical Bobst SA
Publication of EP0458066A1 publication Critical patent/EP0458066A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible 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
    • 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
    • B31B50/58—Folding sheets, blanks or webs by moving endless belts or chains
    • 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
    • B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • 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
    • B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • B31B2100/002—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs characterised by the shape of the blank from which they are formed
    • B31B2100/0022—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs characterised by the shape of the blank from which they are formed made from tubular webs or blanks, including by tube or bottom forming operations
    • 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
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/30—Construction of rigid or semi-rigid containers collapsible; temporarily collapsed during manufacturing
    • 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
    • B31B50/36—Folding sheets, blanks or webs by continuously feeding the sheets, blanks or webs to stationary members, e.g. plates, ploughs or cores

Definitions

  • the present invention relates to a device for folding elements in the form of a plate or sheet used in a machine called "folder-gluer” for the production of packaging, according to the preamble of claim 1.
  • FIG. 1 of the accompanying drawing Such a folding device, described for example in patent CH-A-444650, is shown in Figure 1 of the accompanying drawing.
  • a sheet 1 for example of corrugated cardboard, is moved in the direction of the arrow 13 using at least one cleat 10 carried by a transport chain 11.
  • the sheet 1 in the form of a cutout and also called pose in the packaging industry, has a part in the form of a lateral tab 1 ′ which must be folded in the direction of arrow 2, that is to say along a line (not visible) predetermined previously by upsetting and parallel displacement 13.
  • a third conveyor belt 8 applies, under the action of pressure rollers 8 ', the edge of the fold in formation of the sheet 1 against the straight edge 3a of rule 3.
  • the three conveyor belts 4, 6, 8 are endless.
  • the folding is done using a plate in the form of a helix (not shown) bearing against the underside of the lug 1 ', the moving band 6 being interposed between the propeller and the lug 1'.
  • the folding of the tab 1 ' is carried out only by the strip 6, put in a helix under the action of the conical rollers 7.
  • the object of the present invention is to provide a folding device which eliminates the drawbacks mentioned above.
  • a conveyor belt 4 is moved in the direction of arrow 13 for the transport of sheets 1 (not shown in Figure 2; see Figures 3 and 4).
  • pressure rollers 5 which push the strip 4 upwards against a fixed rule 3 so that the sheet 1, which is located between the rule 3 and the strip 4, is driven by the latter in the direction of the arrow 13, that is to say from right to left.
  • sheet 1 enters the device from the right its tab 1 ′ has already been bent up to 90 ° by helical guides associated with an edge 3a with variable dihedral angle of a rule 3 (as explained above).
  • a first end of this rule 3 is fixed (by means not shown) to a front part of the machine, the other end being free and extending approximately to the downstream end (by reference to the direction of displacement 13) of the folding device described here.
  • the folding of the tab 1 ′ from 90 ° to 180 ° is carried out by the strip 6 subjected to the action of several rollers with variable cone 7 (see FIG. 4).
  • Each roller 7 is fixed by its axis 7a to a fixing block 20.
  • a clamping screw 20a makes it possible to adjust the position of the roller 7 relative to the block 20. All the blocks 20 are mounted on a bar 15. The clamping screw 20a also makes it possible to adjust each block 20 in position on the bar 15.
  • the lower edge of the strip 6 is kept at a constant distance from the edge 3a by a guide bar 21.
  • the guide 21 is supported by a fixed bar 22. Clamping screws 21a, passing through elongated holes provided in the guide 21 and in engagement with the bar 22, make it possible to vary the distance between the edge 3a and the guide 21 as a function of the thickness of the sheet. 1.
  • the bar 22 is fixed, by means of brackets 24 and screws 24a, to a plate 23 extending over the entire length of the device and on which the pressure rollers are mounted 5.
  • the plate 23 is fixed, by screws 23a, to a horizontal support 25 of the frame (not shown) of the machine.
  • the bar 15 is mounted at each of its ends on a mobile support 30a, respectively 30b, one of which 30a is therefore at the upstream end of the device, and the other 30b at the downstream end.
  • These two mobile supports 30a, 30b are pivotable simultaneously around an axis coincident with the fold line 01.
  • each mobile support 30a, 30b is provided with two cams 31a and 32a, respectively 31b and 32b, each describing an arc centered on the fold line 01.
  • the active surfaces of the two cams 31a and 32a, respectively 31b and 32b, are in opposite directions to each other and engaged with three rollers 33a, respectively 33b, mounted on an upstream vertical upright 36a, respectively downstream 36b.
  • These two uprights 36a, 36b are fixed by screws 27a, respectively 27b, to the horizontal support 25.
  • Each movable support 30a, 30b is provided with more than one toothing 37a, respectively 37b, in an arc centered on the line 01 and engaged with a toothed pinion 38a, respectively 38b, fixed on a shaft 39.
  • Each end of the 'shaft 39 is mounted for free rotation in a corresponding bore of the vertical uprights 36a, 36b.
  • a locking block 41 with slot (similar to block 20), fixed on the upstream vertical upright 36a and provided with a bore for the passage of the corresponding end of the shaft 39, allows, using a clamping screw 42, the locking in position of the pivotable supports 30a, 30b.
  • Such pivoting of the supports 30a, 30b around the fold line 01 has the advantage that each point of contact between a roller 7 and the strip 6, also describes a circle centered on this same line 01 (as shown in Figures 3 and 4).
  • the cross sections of the strip 6, which are in contact with the rollers 7, are forced to also pivot around from line 01.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Making Paper Articles (AREA)
EP91106284A 1990-04-26 1991-04-19 Vorrichtung zum Falten von Blättern für eine Falt-Leimmaschine zur Herstellung von Packungen Withdrawn EP0458066A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH142390 1990-04-26
CH1423/90 1990-04-26

Publications (1)

Publication Number Publication Date
EP0458066A1 true EP0458066A1 (de) 1991-11-27

Family

ID=4210111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91106284A Withdrawn EP0458066A1 (de) 1990-04-26 1991-04-19 Vorrichtung zum Falten von Blättern für eine Falt-Leimmaschine zur Herstellung von Packungen

Country Status (4)

Country Link
EP (1) EP0458066A1 (de)
KR (1) KR910018274A (de)
BR (1) BR9101628A (de)
CA (1) CA2041221A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB156633A (en) * 1918-06-07 1922-03-23 Robert Kendrick Palmer Flange bending machine
GB594419A (en) * 1944-03-09 1947-11-11 Budd Edward G Mfg Co Improvements in or relating to method of and machines for making curved profiles of sheet metal or other material
CH444650A (fr) * 1966-09-09 1967-09-30 Bobst Fils Sa J Procédé et dispositif assurant le pliage d'une feuille de carton ondulé selon une ligne prédéterminée
US3462989A (en) * 1967-03-22 1969-08-26 Zedco Co Inc Sheet-flanging machine
FR2197341A5 (de) * 1972-08-25 1974-03-22 Tetra Pak Dev
FR2413209A1 (fr) * 1977-12-30 1979-07-27 Kohmann Gmbh Co Maschbau Machine pour fabriquer des enveloppes d'emballage
FR2621025A1 (fr) * 1987-09-30 1989-03-31 Marquip Inc Appareil pour le pliage de materiaux en feuilles

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB156633A (en) * 1918-06-07 1922-03-23 Robert Kendrick Palmer Flange bending machine
GB594419A (en) * 1944-03-09 1947-11-11 Budd Edward G Mfg Co Improvements in or relating to method of and machines for making curved profiles of sheet metal or other material
CH444650A (fr) * 1966-09-09 1967-09-30 Bobst Fils Sa J Procédé et dispositif assurant le pliage d'une feuille de carton ondulé selon une ligne prédéterminée
US3462989A (en) * 1967-03-22 1969-08-26 Zedco Co Inc Sheet-flanging machine
FR2197341A5 (de) * 1972-08-25 1974-03-22 Tetra Pak Dev
FR2413209A1 (fr) * 1977-12-30 1979-07-27 Kohmann Gmbh Co Maschbau Machine pour fabriquer des enveloppes d'emballage
FR2621025A1 (fr) * 1987-09-30 1989-03-31 Marquip Inc Appareil pour le pliage de materiaux en feuilles

Also Published As

Publication number Publication date
CA2041221A1 (en) 1991-10-27
BR9101628A (pt) 1991-12-10
KR910018274A (ko) 1991-11-30

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