EP0322398A1 - Dispositif de pliage - Google Patents

Dispositif de pliage Download PDF

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Publication number
EP0322398A1
EP0322398A1 EP88890327A EP88890327A EP0322398A1 EP 0322398 A1 EP0322398 A1 EP 0322398A1 EP 88890327 A EP88890327 A EP 88890327A EP 88890327 A EP88890327 A EP 88890327A EP 0322398 A1 EP0322398 A1 EP 0322398A1
Authority
EP
European Patent Office
Prior art keywords
folding
cassette
folded
plates
guide surfaces
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
EP88890327A
Other languages
German (de)
English (en)
Other versions
EP0322398B1 (fr
Inventor
Karl Zechner
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
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0322398A1 publication Critical patent/EP0322398A1/fr
Application granted granted Critical
Publication of EP0322398B1 publication Critical patent/EP0322398B1/fr
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
    • B65H45/20—Zig-zag folders
    • 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

Definitions

  • the invention relates to a folding device for folding one or more sheets of folded goods, such as paper sheets or the like, with a rotatable cassette, which receives a part of the folded goods between two parallel folding plates, and with folding elements arranged outside the cassette, which, when the cassette is rotated, over the Fold folding parts protruding from folding plates around one of the mutually parallel end edges of the folding plates.
  • Such a folding device is used in a known folding machine for folding mail in an inserting machine to first bend the mail for each fold to be produced at the rear end edge of one of the folding plates before it is inserted with the fold thus formed into the gap of a pair of folding rolls, to be folded at the point determined by the fold.
  • the mail item is drawn in between the folding plates by means of conveyor rollers arranged in the cassette and passing through the folding plates until the location provided for the folding comes to rest on the rear end edge of the folding plates.
  • the known folding machines are for folding different paper sizes at a speed of 12,000 to 20,000 sheets / h and automatic paper feed. These machines are technically very complex, have a corresponding size and are therefore also significantly heavier. These well-known folding machines are dimensioned too large, especially for the mail that is constantly generated, which usually has up to 90% DIN A4 format in small to medium-sized offices.
  • the object of the invention is to eliminate these disadvantages.
  • the folding members are designed as two folding stamps which receive the cassette between them and can be moved apart by rotating the cassette and are essentially flat with the folding plates on their inner sides facing the cassette have cooperating guide surfaces for protruding folding material parts, and that the cassette from a receiving position for the folding material with the folding plates adjacent, essentially parallel to these guide surfaces via a central position with guide surfaces perpendicular to the folding plates in an output position for the folded folding material with the folding plates adjacent, to these substantially parallel guide surfaces can be rotated by 180 °, in the receiving position and in the dispensing position folding stamp and cassette lie against each other under gravity and / or spring force and by rotating the Cassette a folder against the gravity and / or spring force can be pushed away from the other folder.
  • a folding stamp is arranged stationary in a frame and the cassette te and the other folder are movably guided in the housing.
  • the movable folder presses its weight onto the cassette and together with it onto the folder-fixed folder.
  • the cassette is rotatable in a housing about an axis fixed to the housing and the two folding stamps are movably guided in the housing. This design allows a folder to be used by gravity and a folder pressed by spring force against the cassette.
  • the cassette and the two folding stamps can be pressed together by means of compression springs.
  • the force required to turn the cassette can be determined or adjusted with the compression springs.
  • a lateral expansion piece which is clamped between support surfaces of the folding stamps, is fastened for pushing the folding stamps apart.
  • This design is particularly suitable for sensitive folding goods, since the majority of the forces required to push the folding stamp apart acts on the respective expansion piece.
  • the guide surfaces are each formed on pressure plates which are elastically supported on the inside of the stamp.
  • each guide surface has at least one projection facing the cassette for clamping the folded goods on a folding plate edge. In this way, the folded goods are secured against twisting during the folding process.
  • the projection can be designed according to the invention as a rib parallel to the respective folded plate edge.
  • the cassette can be equipped with conveyor rollers arranged transversely to the axis of rotation of the cassette, which push the folded goods out of the cassette in the longitudinal direction of the axis of rotation of the cassette.
  • the invention For rolling the folds of the folded folded material, the invention provides that the folding rollers are arranged laterally next to the cassette, perpendicular to its axis of rotation and parallel to the folding plates, with the cassette in the dispensing position.
  • the folding device according to the invention can also be equipped with an automatic fold-in device.
  • the folding speed is lower than with conventional folding devices, depending on the specific requirements.
  • 1-6 shows a first embodiment of a folding device according to the invention for zigzag folding of folded material sheets, such as paper sheets with A4 format or the like.
  • a cassette 3 which can be rotated about an axis of rotation 2 fixed to the housing, is arranged between two folding stamps 5, 6, which are arranged parallel to one another and are movable in the housing 2 on guide rods 4 with respect to one another and apart.
  • the two folding stamps 5, 6 are connected to one another by coil tension springs 7 arranged around the guide rods, which pull the folding stamps 5, 6 towards one another and thus against the cassette 3.
  • the cassette 3 consists of two lateral expansion pieces 8, 9, arranged perpendicular to the cassette rotation axis 2, on which the folding stamps 5, 6 rest, and two folding plates 10, 11 that connect the two expansion pieces 8, 9 and are arranged symmetrically to the cassette rotation axis 2.
  • the two thin folding plates 10, 11 are at a very small distance, e.g. approx. 2 mm parallel one above the other and are fastened over their entire length to the inside of one expansion piece 8, on the outside of which the driven wheel 12 of a belt drive 14 driven by a motor 13 is fastened.
  • Each folding plate 10, 11 has two end edges parallel to the cassette rotation axis 2, the distance between which corresponds to a third of the length of the A4 paper format and whose length (parallel to the cassette rotation axis) is greater than the width of this paper format.
  • the length of the outlet slot 15 is slightly larger than a third of the length of this paper format.
  • the two folding stamps 5, 6 have on their inside guiding surfaces 16, 17 which cooperate with the folding plates 10, 11, which are formed on pressure springs 18 on the respective inside of the stamp elastically supported pressure plates 19, 20.
  • the folded sheet 21 is pressed at the front end edge of the upper folding plate 10 against the guide surface 17 of the pressure plate 20 of the lower folding die 6 and at the rear end edge of the lower folding plate 11 against the guide surface 16 of the pressing plate 19 of the upper folding die 5 and there around the the respective folding plate end edge is bent, whereby the front third of the folded goods protruding from the cassette 3 in the direction of insertion and the rear third of the folded goods protruding from the cassette 3 towards the rear are drawn into the cassette 3.
  • the folding dies 5, 6 After exceeding the middle position of the cassette 3, in which the folding plates 10, 11 are perpendicular to the guide surfaces 16, 17 of the two folding dies 5, 6, the folding dies 5, 6 are pulled together by the coil tension springs 7 and thereby accelerate the further rotation of the cassette 3 into the delivery position in which the two folding plates 10, 11 are again parallel to the pressure plates 19, 20 of the two folding dies 5, 6, the upper folding plate 10 now being at the bottom and the lower folding plate 11 at the top.
  • the now zigzag-folded sheet of folded goods 21 is arranged in the longitudinal direction from its axis of rotation 2 to lateral folding roller pairs 24, 25, which are arranged in the plungers 5, 6 and flattened at one point on their circumference, from the cassette 3, which transports them to the pairs of folding rollers 24, 25, which lead to the , Folding plates 10, 11 located in the output position rotate axes parallel and perpendicular to the axis of rotation of the cassette, a separate pair of folding rollers 24, 25 being provided for each of the two folds of the folded sheet of folded goods 21.
  • a pair of feed rollers 28 is arranged in the housing 1, in front of the cassette 3, at the level of its axis of rotation 2 and parallel thereto, the rollers each consisting of three individual rollers 29 arranged side by side on a common axis.
  • FIG. 7-19 shows a further exemplary embodiment of a folding device according to the invention, in which, in a housing (not shown), two vertical holding plates 30, 31 lying opposite one another, the bearings for the cassette 32 and guide links 33-36 for the side of the folding stamp 37, 38 attached guide pins 39-42 included.
  • the cassette 32 has two, parallel to the axis of rotation 43, at a distance of about 2 mm one above the other, thin folding plates 44, 45, of which the lower folding plate 45 is offset relative to the upper folding plate 44 transversely to the axis of rotation 43, so that the respective Folds used the front end edge 46 of the upper folding plate 44 and the rear end edge 47 of the lower folding plate 45 are each arranged at a greater distance from the axis of rotation 43 than the corresponding front edge 48 of the lower folding plate 45 or the rear edge 49 of the upper folding plate 44 (Fig. 12).
  • the mutual distance of the front end edge 46 of the upper folding plate 44 from the rear end edge 47 of the lower folding plate 45 corresponds to a third of the length of the folded product sheet 50.
  • the cassette 32 consisting of the two folding plates 44, 45 and the two expansion pieces 51, 52 is on the drive side by means of a hollow shaft 55 in the holding plate 31 and on the ejection side by means of a cylindrical, fixed to the axis of rotation 43, attached to the ejection expansion piece 52 Inner ring 56 is rotatably supported in a concentric outer ring 57 formed on the holding plate 30.
  • the ejection spreader 52 has an outlet slot 58 which runs parallel to the side edges of the folding plates 44, 45 and which, in the receiving position and in the dispensing position of the cassette, is aligned with the lateral dispensing slot 59 in the holding plate 30 or in the outer rim 57 thereof.
  • the cassette 32 When the cassette 32 is driven via the hollow shaft 55, the cassette 32 is rotated counterclockwise by 180 ° in the drawing.
  • the two expansion pieces 51, 52 press the two folding dies 37, 38 apart during the first quarter turn up to 90 °. These are tilted out of their starting position and each move by means of the guide pins 39-42 in the predetermined guide figures of the guide link 33-36 in the two lateral holding plates 30,31.
  • the folding stamps 37, 38 are fastened by four pulls, for example attached to the guide pins 39-42 outside the holding plates 30, 31 springs (not shown) pulled to the cassette 32 or against the two expansion pieces 51, 52 thereof.
  • the two folding dies 37, 38 are pulled together again by the springs.
  • the actual folding process begins with the insertion of a folded sheet 50 e.g. in DIN A4 format in the cassette 32 in the recording position.
  • the folded sheet 50 is inserted by a pair of feed rollers 60 so far between the folding plates 44 and 45 that the middle third of the folded goods come between the folding plates and the two outer thirds of the folded goods lie outside the cassette.
  • the feed roller pair 60 has a one-way clutch, which is why the folded sheet can be freely pulled out of the feed roller pair 60 when the cassette 32 is rotated.
  • the front edge 48 of the lower folding plate 45 closest to the pair of feed rollers 60 is set back somewhat from the front end edge 46 of the upper folding plate 44, so that the goods to be folded are thus immediately at the beginning of the rotation of the cassette 32 between the front end edge 46 of the upper folding plate 44 and an opposite one, protruding nose 63 protruding from the corresponding pressure plate 62. Since the power transmission from the drive expansion piece 51 to the ejection expansion piece 52 takes place via the two folding plates 44, 45, the folded goods 50 are additionally clamped between them by a slight twisting of the folding plates caused thereby.
  • the folding dies 37, 38 due to the tension springs acting on their guide pins 39-42, not shown in the drawing, are pressed apart only at the guide pins 40 and 41 and these are in the linear guide slots 34, 35 pushed outwards. Subsequently, the guide pins 39 and 42 move obliquely inwards in the guide links 33 and 36 and are then pressed outwards by up to 90 °, performing the movement shown in FIGS. 7, 15 and 16.
  • the folding material 50 is bent by this tilting movement of the folding dies 37, 38 over the end edge 46 or 47 of a folding plate 44 or 45, respectively, FIGS. 15-17. In the range of rotation from 90 ° to 180 °, the two folding dies 37, 38 can be pulled towards one another again by the tension springs as a result of the rotary movement of the cassette 32 on the sides with the guide pins 40 and 41, FIG. 17.
  • the folding device is equipped with two pairs of conveyor rollers 65, 66. These are mounted on the outer sides of the folding stamps 37, 38, and the folded sheet of folded goods is pulled off the folding plates 44, 45 by them.
  • the conveyor rollers are flattened on the sides facing the pressure plates 61, 62 of the folding dies 37, 38 in such a way that they cannot hinder the movement of the pressure plates 61, 62 with the flattened side facing inward at a standstill.
  • These rollers are driven by two planet gears 69, 70 connected in a rotationally fixed manner to two shafts 67, 68, which mesh positively with a sun gear 71 when the folding dies 37, 38 are placed on the expansion pieces 51, 52 of the cassette 32.
  • the sun gear 71 is driven via a shaft 72 which leads through the hollow shaft 55 of the drive expansion piece 51.
  • An electro-magnet or an electromagnetically activated lock activated via a control unit prevents the plungers 37, 38 from being lifted from the expansion pieces 51, 52 of the cassette 32 by rotating the gearwheels during this operation.
  • the conveying rollers 65, 66 When ejecting, the conveying rollers 65, 66 now grip through the turnouts through corresponding recesses in the folding dies 37, 38, pressure plates 61, 62 and folding plates 44, 45 to the folded sheet 50 and push it through the outlet slot 58 in Ejection spreader 52 from the cassette 32 and through the output slot 59 in the holding plate 30 to folding rollers 73.
  • the peripheral speed of the conveyor rollers 65, 66 and the folding rollers 73 is coordinated with one another. The goods folded when the cassette 32 is rotated through 180 ° are folded and ejected by these folding rollers.
  • a light barrier (not shown) which triggers the start of the three successive operations such as sheet feeding, the rotary movement of the cassette and the drive of the conveyor rollers or the folding rollers when a folded item is introduced. This prevents folded goods from being drawn in during the folding process.
  • a cross fold can also be produced with the folding device according to the invention, one only needs to select a larger working stroke for the pressure plate 61 supported elastically on the upper folding stamp 37 and an electromagnet (not shown) on the outside of the folding stamp 37 for tightening the pressure plate 61 in to provide the upper end position.
  • the folded goods are first introduced into the cassette 32 in width to the middle.
  • the pressure plate 61 is drawn to the folding die 37 by means of the electromagnet. FIG. 13. The folded material is then folded. After the ejection, the simple and longitudinally folded items are folded in a second folding device.
  • the guide surfaces of the folding stamps which cooperate with the folding plates are each formed on the inside of pressure plates which are elastically supported on the inside of the stamp.
  • These guide surfaces can also be formed from the inside of the stamp itself, in which case the cassette 74 can be designed such that the two folding stamps 75, 76 in the receiving position rest with their inner sides directly on the outer sides of the folding plates 77, 78 and when the cassette 74 is rotated are pushed apart by the folding plates 77, 78 themselves and not by the expansion pieces trained cassette side walls.
  • FIG. 21 Such an embodiment is shown schematically in FIG. 21.
  • FIG. 22 and 23 show a further exemplary embodiment of a folding device according to the invention, in which the lower folder 79 is fixedly mounted in the housing 80 and both the cassette 81 and the upper folder 82 can be moved up and down in guides of the housing.
  • the cassette 81 lies under gravity on the lower folder 79 and the upper folder 82 under gravity on the cassette 81.
  • the cassette 81 is not driven here via an axle fixed to the housing, but via a shaft 84 movably guided in a guide rail 83.
  • the cassette 81 rotates, it is supported on the lower folder 79 and presses the upper folder 82 against gravity above, due to the stationary lower folder 79, the cassette 81 with the drive shaft 84 in the guide rail 83 is lifted up.
  • the weight of the upper folder 82 presses on the cassette 81 and increases its tendency to continue rotating under its own weight up to 180 °.
  • the cassette drive shaft 82 slides downward again in the guide rail 83.
  • the folding device folds from the central position into the dispensing position without spring force only by the weight of the upper folding punch or the cassette.
  • the upper folder 82 can be guided vertically displaceably in the housing 80 (FIG. 22) or by means of link guides similar to that of the exemplary embodiment in FIG. 7, so that it executes a tilting movement during the folding process (FIG. 23).

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP88890327A 1987-12-22 1988-12-21 Dispositif de pliage Expired - Lifetime EP0322398B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3399/87 1987-12-22
AT0339987A AT387952B (de) 1987-12-22 1987-12-22 Faltvorrichtung

Publications (2)

Publication Number Publication Date
EP0322398A1 true EP0322398A1 (fr) 1989-06-28
EP0322398B1 EP0322398B1 (fr) 1991-12-11

Family

ID=3549949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88890327A Expired - Lifetime EP0322398B1 (fr) 1987-12-22 1988-12-21 Dispositif de pliage

Country Status (5)

Country Link
US (1) US4900002A (fr)
EP (1) EP0322398B1 (fr)
JP (1) JPH0712878B2 (fr)
AT (1) AT387952B (fr)
DE (1) DE3866862D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19722930A1 (de) * 1997-05-23 1998-12-03 Guenter Dipl Ing Rucho Briefpapierfaltgerät
US6007999A (en) * 1991-07-31 1999-12-28 Idexx Laboratories, Inc. Reversible flow chromatographic binding assay

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9206501D0 (en) * 1992-03-25 1992-05-06 Flomat Ltd Bag folder
AT401046B (de) * 1992-10-19 1996-05-28 Zechner Karl Stauchfalzmaschine
DE102005053436B3 (de) * 2005-11-09 2007-03-15 Maschinenbau Oppenweiler Binder Gmbh & Co. Kg Falzmaschine mit Drehgestell
CN113321025B (zh) * 2021-05-08 2023-12-29 中国建筑第二工程局有限公司 建筑工程现场施工用密目网快速收卷装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2313214A1 (fr) * 1975-06-04 1976-12-31 Denis Albert Dispositif d'appareil plieur de lettres
DE2849431B1 (de) * 1978-11-15 1980-03-13 Hat Hohmann Automations Techni Vorrichtung zum Falten von Faltgutstuecken
US4403981A (en) * 1981-02-26 1983-09-13 Hasler Ag Folding machine
US4553370A (en) * 1983-08-10 1985-11-19 Mobil Oil Corporation Bag folder, transporter and carton loader having improved loading and stomper mechanism

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2540649C2 (de) * 1975-09-12 1982-10-21 Heinz-Hermann 4904 Enger Pott Falteinrichtung für Faltschachtelzuschnitte
JPH0641345B2 (ja) * 1986-11-26 1994-06-01 株式会社サン精機製作所 シ−ト折り畳み装置
JPH0699078B2 (ja) * 1987-03-31 1994-12-07 オリオン機械工業株式会社 折りたたみ装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2313214A1 (fr) * 1975-06-04 1976-12-31 Denis Albert Dispositif d'appareil plieur de lettres
DE2849431B1 (de) * 1978-11-15 1980-03-13 Hat Hohmann Automations Techni Vorrichtung zum Falten von Faltgutstuecken
US4403981A (en) * 1981-02-26 1983-09-13 Hasler Ag Folding machine
US4553370A (en) * 1983-08-10 1985-11-19 Mobil Oil Corporation Bag folder, transporter and carton loader having improved loading and stomper mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6007999A (en) * 1991-07-31 1999-12-28 Idexx Laboratories, Inc. Reversible flow chromatographic binding assay
DE19722930A1 (de) * 1997-05-23 1998-12-03 Guenter Dipl Ing Rucho Briefpapierfaltgerät
DE19722930C2 (de) * 1997-05-23 2000-02-03 Guenter Rucho Briefpapierfaltgerät

Also Published As

Publication number Publication date
JPH01197283A (ja) 1989-08-08
US4900002A (en) 1990-02-13
AT387952B (de) 1989-04-10
ATA339987A (de) 1988-09-15
DE3866862D1 (de) 1992-01-23
JPH0712878B2 (ja) 1995-02-15
EP0322398B1 (fr) 1991-12-11

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