EP0086153B1 - Maschine zum Falten von Platten - Google Patents

Maschine zum Falten von Platten Download PDF

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Publication number
EP0086153B1
EP0086153B1 EP83400236A EP83400236A EP0086153B1 EP 0086153 B1 EP0086153 B1 EP 0086153B1 EP 83400236 A EP83400236 A EP 83400236A EP 83400236 A EP83400236 A EP 83400236A EP 0086153 B1 EP0086153 B1 EP 0086153B1
Authority
EP
European Patent Office
Prior art keywords
folding
boards
machine
endless belt
conveyor
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
Application number
EP83400236A
Other languages
English (en)
French (fr)
Other versions
EP0086153A1 (de
EP0086153B2 (de
Inventor
Bernard Capdeboscq
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.)
Martin SA
Original Assignee
Martin 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9270662&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0086153(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Martin SA filed Critical Martin SA
Publication of EP0086153A1 publication Critical patent/EP0086153A1/de
Publication of EP0086153B1 publication Critical patent/EP0086153B1/de
Application granted granted Critical
Publication of EP0086153B2 publication Critical patent/EP0086153B2/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
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/22—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement
    • 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
    • B31B50/36—Folding sheets, blanks or webs by continuously feeding the sheets, blanks or webs to stationary members, e.g. plates, ploughs or cores
    • 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
    • B31B50/58—Folding sheets, blanks or webs by moving endless belts or chains

Definitions

  • the present invention relates to a machine for folding plates, and more particularly, by way of example, to a machine intended for folding packaging cases of corrugated cardboard after their shaping and printing.
  • the extreme transverse panels of the blank are folded inwards and glued to each other.
  • the folding is generally done by moving the boxes along an endless conveyor (belts, chains, etc ...) holding the central part of the blank firmly between the two folding lines thereof, the extreme panels supported by inclined bars which force them to rise or lower depending on whether the folding takes place from above or from below.
  • the extreme panels are thus brought vertically, and they are then generally taken up by other bars which end the folding flat.
  • the present invention aims to provide a solution to the drawbacks of these known devices. It relates to a plate folding machine with which flaps are associated by a folding line of the kind provided with a conveyor of the plates to be folded equipped with means making it possible to advance these plates during the cycle of the general movement of the machine, also provided with lateral push folding elements at least part of which consists of at least one endless strand associated with pusher cleats placed along said endless strand in correspondence with the successive plates on the conveyor, said endless strand also equipped with means allowing it to advance to the cycle of the machine is characterized in that the endless strand carries directly pusher cleats whose bearing face is in alignment with the fold line.
  • the endless strand which directly carries pusher cleats of rounded shape is straight and its two return pulleys have axes parallel to the starting position of the flaps of the plates, the axes of said pulleys on either side of the fold line.
  • the cardboard blanks are introduced into the machine in the form of pla ques 1 lined with two longitudinal marks 2, 3, obtained previously by crushing, or "pushing back", of the cardboard. These marks form hinges around which the flaps 5 and 6 will be folded.
  • the folding is carried out by longitudinal displacement of the blank 1 along the folder.
  • the meeting of the flaps 5, 6, with folding elements. constituted here by two twisted bars 7, 8, conventional, causes the rotation of these flaps, around the corresponding hinges 2, 3, respectively 180 degrees to the right and to the left, until the flaps are in superposition with the part central 9 of the blank 1, all of this first part of the device being extremely conventional.
  • the blanks 1 are transported through the folder using a conveyor comprising two endless belts 10, 11, pierced with holes 4 regularly distributed in the longitudinal direction, as can be clearly seen in Figure 2.
  • the the distance between these holes 4 is adjusted so as to allow their engagement in the corresponding end pulleys upstream 12, 13, and downstream 14, 15, each of said pulleys being consequently provided with fingers 115 regularly distributed.
  • Each finger 115 has a pointed shape, although having an upper flat 17, and has lateral profiles 16 substantially in the form of involutes of a circle, as can be seen in FIG. 2.
  • the upstream pulleys 12 and 13 are mounted idly, while the downstream pulleys 14 and 15 are integral with a shaft 18 driven in rotation by the general movement of the machine.
  • the driving pulleys 14 and 15 thus ensure an advance of the conveyor belts 10 and 11 in the machine cycle
  • the holes 4, in combination with the associated fingers 115 allow a permanent refocusing of said belts, permanently correcting their movement despite in particular their fluctuations in length, and thus guaranteeing their perfect cycling.
  • the holes 4 also serve as suction orifices making it possible to guarantee the plating of the central part 9 of the blanks 1 on the active parts of the conveyor belts 10 and 11, and therefore to guarantee their advance during the cycle of the machine.
  • Under each conveyor belt 10, 11 is therefore placed a suction box, respectively 19 and 20 connected to a vacuum pump by pipes 21 ( Figure 2).
  • the folding machine which has just been described has the advantage of guaranteeing the advancement of the plates during the machine cycle.
  • it uses conventional folding elements 7, 8 which have the disadvantage, with certain qualities of cardboard, of risking folding the flaps slightly crosswise.
  • the embodiments which will now be described use pusher cleats which move, by means of belts, chains, cables, or the like, during the cycle of the machine, that is to say at exactly the same theoretical speed as the plates to be folded, gradually pressing on the flaps to be folded.
  • pusher cleats which move, by means of belts, chains, cables, or the like, during the cycle of the machine, that is to say at exactly the same theoretical speed as the plates to be folded, gradually pressing on the flaps to be folded.
  • everything happens with this kind of device as if two slaves were folding the two flaps by pushing laterally on them while moving in the same direction as the boxes and at the same speed.
  • the folding bars 7 and 8 of FIG. 1 are, in this embodiment, replaced by a set of endless twisted belts 22, each turning at the cycle of the machine around end pulleys 23, 24, driven by the pulleys 12 of the conveyor 10 and carrying, at regular intervals in correspondence with the blanks on the conveyor 10, groups of pusher cleats 25.
  • the belts 22 are positioned so that their "go" or active strand is in alignment with the associated hinge 2, and the tabs 25 have such a section it is the same for their bearing face 26.
  • the belts 22 are lined with the same holes 4 as the conveyor belts 10 and 11 of Figure 1, and the end pulleys 23 and 24 are likewise lined with fingers of correction 115 identical to those described above with reference to FIG. 2.
  • a set of small intermediate pulleys 27 also makes it possible to maintain the belt 22 on the desired twisted path allowing the progressive folding of the flap 5 on the central part 9 of the blank.
  • each belt 22 is adjusted by acting on the relative positions of the pulleys 23, 24 and 27.
  • the belt 22 folds the flap 5 at an angle of approximately 90 degrees and, consequently, the end pulleys 24 and 23 have the positions shown in FIGS. 4 and 6 respectively.
  • the folding takes place gradually as it is clearly seen from the three successive phases shown diagrammatically in FIGS. 4 to 6.
  • the folder of Figure 3 has at least a pair of belts 22 upstream of that shown, responsible for performing the folding from 0 to about 90 degrees, as well as, if. necessary, another couple downstream to complete folding 180 °.
  • the respective positions of the end pulleys are adjusted according to the desired folding, easily determined, as in the case of FIGS. 4 and 6, so that the upstream pulley ensures, with a cleat 25, the initial folding position, and that the downstream pulley ensures, with a cleat 25, the final folding position.
  • FIGS. 7 to 10 show an embodiment close to that of FIG. 3, but using non-twisted belts 221, therefore straight, furnished with pusher cleats 251 with rounded section, in this case semi-circular.
  • FIGS. 7, 8, 9 and 10 which correspond respectively to FIGS. 3, 4, 5 and 6 of the previous embodiment, the folding carried out by self-parallel displacement of the upstream return pulleys 241 and downstream 231.
  • the end pulleys 241, 231 have their vertical axes and located respectively beyond and below the folding axis 2, therefore on either side of it in the horizontal plane.
  • an identical assembly will be placed, but with end pulleys with horizontal axes, located on either side of the axis of folding 2 in the vertical plane.

Landscapes

  • Making Paper Articles (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Claims (5)

1. Maschine zum Falten von Platten (1), die über eine Faltlinie (2) mit Seitenklappen (5) verbunden sind, mit einem Förderer (10, 11) für die zu faltenden Platten (1), der Mittel (4, 14, 15, 19) zum Vorschub dieser Platten im Zyklus der allgemeinen Maschinenbewegung sowie Elemente zum Falten durch seitlichen Druck aufweist, von denen mindestens ein Teil aus zumindest einem endlosen Band (22) besteht, an dem in Längsrichtung hintereinander, entsprechend den auf dem Förderer aufeinanderfolgenden Platten Druckanleger vorgesehen sind, und das ausserdem Mittel (23, 24, 115) zwecks seines Vorschubs im Maschinenzyklus besitzt, dadurch gekennzeichnet, dass das endlose Band (22) unmittelbar Druckanleger (25) trägt, deren Anlagefläche (26) mit der Faltlinie (2) gleich ausgerichtet ist.
2. Maschine zum Falten von Platten (1), die über eine Faltlinie (2) mit Seitenklappen (5) verbunden sind, mit einem Förderer (10, 11) für die zu flatenden (1), der Mittel (4, 14, 15, 19) zum Vorschub dieser Platten im Zyklus der allgemeinen Maschinenbewegung sowie Elemente zum Falten durch seitlichen Druck aufweist, von denen mindestens ein Teil aus zumindest einem endlosen Band (221) besteht, an dem in Längsrichtung hintereinander, entsprechend den auf dem Förderer aufeinanderfolgenden Platten Druckanleger vorgesehen sind, und das ausserdem Mittel (231, 241, 115) zwecks seines Vorschubs im Maschinenzyklus besitzt, dadurch gekennzeichnet, dass das endlose Band (221) unmittelbar Druckanleger (251) mit abgerundeter Form trägt, während das endlose Band (221) gerade ist, und seine beiden Umlenkscheiben (231, 241) zur Ausgagsstellung der Seitenklappen (5) der Platten (1) parallele Achsen aufweisen, welche sich beiderseits der Faltlinie (2) befinden.
3. Maschine nach Anspruch 1 oder 2, gekennzeichnet durch einen Förderer für die zu faltenden Platten der mindestens einen Riemen (10, 11) mit in Längsrichtung in gleichmässigen Abständen vorgesehenen Löchern (4) aufweist, wobei der Mittenabstand zwischen diesen Löchern das Eingreifen mindestens in eine Scheibe (14, 15) zulässt, die folglich Eingriffsvorsprünge (115) besitzt, deren Seitenprofile (16) im wesentlichen in Form von Kreisevolventenabschnitten ausgebildet sind.
4. Maschine nach Anspruch 3, gekennzeichnet durch eine durch die Löcher (4) des Riemens wirkende Saugvorrichtung (19, 21), welche die Platten auf dem Förderriemen festhält.
5. Maschine nach Anspruch 2, dadurch gekennzeichnet, dass die Druckanleger (251) einen halbkreisförmigen Querschnitt aufweisen.
EP83400236A 1982-02-04 1983-02-04 Maschine zum Falten von Platten Expired - Lifetime EP0086153B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8201782A FR2520665B1 (fr) 1982-02-04 1982-02-04 Machine de pliage de plaques
FR8201782 1982-02-04

Publications (3)

Publication Number Publication Date
EP0086153A1 EP0086153A1 (de) 1983-08-17
EP0086153B1 true EP0086153B1 (de) 1986-06-18
EP0086153B2 EP0086153B2 (de) 1990-10-03

Family

ID=9270662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83400236A Expired - Lifetime EP0086153B2 (de) 1982-02-04 1983-02-04 Maschine zum Falten von Platten

Country Status (5)

Country Link
US (1) US4614512A (de)
EP (1) EP0086153B2 (de)
JP (1) JPS58147346A (de)
DE (1) DE3364116D1 (de)
FR (1) FR2520665B1 (de)

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Publication number Publication date
DE3364116D1 (en) 1986-07-24
EP0086153A1 (de) 1983-08-17
FR2520665A1 (fr) 1983-08-05
EP0086153B2 (de) 1990-10-03
JPS6158296B2 (de) 1986-12-11
JPS58147346A (ja) 1983-09-02
US4614512A (en) 1986-09-30
FR2520665B1 (fr) 1987-12-24

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