EP0795503A2 - Procédé et dispositif pour aligner des objets plats - Google Patents

Procédé et dispositif pour aligner des objets plats Download PDF

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Publication number
EP0795503A2
EP0795503A2 EP97103681A EP97103681A EP0795503A2 EP 0795503 A2 EP0795503 A2 EP 0795503A2 EP 97103681 A EP97103681 A EP 97103681A EP 97103681 A EP97103681 A EP 97103681A EP 0795503 A2 EP0795503 A2 EP 0795503A2
Authority
EP
European Patent Office
Prior art keywords
suction
stop
aligned
speed
driver
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
EP97103681A
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German (de)
English (en)
Other versions
EP0795503A3 (fr
EP0795503B1 (fr
Inventor
Martin Blümle
Engelbert Rottmann
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 EP0795503A2 publication Critical patent/EP0795503A2/fr
Publication of EP0795503A3 publication Critical patent/EP0795503A3/fr
Application granted granted Critical
Publication of EP0795503B1 publication Critical patent/EP0795503B1/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
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/06—Movable stops or gauges, e.g. rising and falling front stops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/14—Retarding or controlling the forward movement of articles as they approach stops

Definitions

  • the invention relates to a method and a device for aligning flat objects, such as, in particular, envelopes, envelope blanks and the like, according to the position and machine cycle, with the features of the preambles of claims 1 and 6.
  • a method of the type mentioned is known from DE 8 76 527. It is used for aligning sheet metal or cardboard sheets or the like before further processing in painting or printing machines and provides that the object to be aligned is first of all along an alignment path at a speed is moved, which is greater than the speed of two stops arranged transversely to the transport direction at a distance from each other. As soon as the object hits the stop or stops, it is aligned according to its position and braked to its speed. The objects therefore then arrive in a machine part that processes them precisely and in machine cycle fashion and can be finished there, for example.
  • the stops which move precisely in terms of position and machine cycle, are moved with the aid of chains which, with their upper run, are located in the same plane as the transport chains carrying the object to be aligned.
  • These transport chains have engaging drivers at the rear end of the objects to be aligned and run faster than the chains with the stops.
  • the various components of the device are coordinated with one another in such a way that the objects to be aligned lie against the stops before the objects are released to the machine part which is to be further processed.
  • DE 17 61 435 A1 discloses a method and a corresponding device which basically work in the same way, the only differences being that the objects to be precisely aligned are conveyed scales overlapped at the entrance to a sheet-processing machine.
  • the distance from the front edge to the front edge of the sheet-like sheets is larger than the distance of the stops moving in the transport direction.
  • the stops also move in time with the machine, so that each sheet is countered by its faster running conveyor pushed one stop at a time, aligning it and braking slightly.
  • the objects or sheets reach the stops, they lie on conveyor belts and are held there by their own weight and by the pressure force caused by the scaly overlap. After the sheet alignment has been completed, they are taken over by a machine that processes them further or inserted individually into them.
  • the driver therefore accelerates the objects up to the stop on the driver, which can either be designed in the manner of a rotating lever or as a rotating roller. It is achieved with this known device that the objects leave it at regular intervals.
  • This known device is not suitable for the exact alignment of an object, since the objects can lie against the driver and two or more guide rollers at the same time, so that in truth they cannot be moved freely.
  • free mobility is a prerequisite for the objects being able to be aligned precisely in terms of position and machine.
  • the invention is therefore based on the object of specifying a method and a device for aligning flat objects such as, in particular, envelopes, envelope blanks, flat bags or their blanks and the like, which works safely and reliably, is structurally simple, has little or no wear is subject to and has also grown to the highest numbers.
  • the invention provides with the features of the characterizing part of claim 1 that the object to be aligned is detected in the area of its leading edge, that is to say in the direction of movement, and is held and pulled at least in the area of its front edge until it is on or hits the stops.
  • the object is pulled according to the invention and not pushed or pushed, as is the case in the prior art Case is. This ensures that its rear end can follow freely and can also align itself freely when the object hits the stop (s). Production disruptions, even with large quantities and the highest machine output, can therefore be avoided in the area of an alignment station.
  • At least one traction means is provided, with the aid of which the driver engages the object to be aligned at least in the region of its front edge in the direction of movement.
  • the traction device can work with the aid of suction air. It can be controlled very precisely, so that the holding force in the area of the leading edge of the object to be aligned can also be set exactly according to the respective requirements.
  • a device 1 for producing flat and relatively slightly flexible objects 6 'and specifically envelopes 2 comprises a plurality of stations, of which in FIG. 1 a deposit table 3 for an envelope stack 4 above part of a device 5 for drying rubberized, almost finished envelopes and in this respect of envelope blanks 6 and to the right of them a station 7 are shown, in which the envelope blanks 6 are finished and finally placed in a stack of envelopes 4.
  • a stacking device 8 in the form of a flap disk 9 is used, for example, to stack the finished envelopes 2.
  • the almost finished envelope blanks 6 are transported, for example in a staggered arrangement, through the device 5 serving for drying and then fed between belts 10 and 11 to a pull-out roller 12, which is also known in principle, and with the help of which either singly or in it Position changed to each other.
  • a switch 13 in the running direction behind the pull-out roller, in order, for example, to be able to discharge envelope blanks 6 which possibly lead to malfunctions when the device 1 starts up.
  • the envelope blanks 6 are always guided with the bottom fold first through the device 5 for drying and in this position also to the pull-out roller 12.
  • the device 14 used for alignment comprises a driver 16 for the envelope blank 6 and carrier 17, 18 for stops 19.
  • the driver 16 is a transport disc 16 'and the carriers 17, 18 are support discs 17 'or 18', between which the transport disk 16 'is arranged according to the embodiment shown in FIG. 2.
  • the two support disks 17 'and 18' are driven by a common shaft 20.
  • the transport disc 16 ' is also rotatably mounted on this shaft 20, but with the help of bearings 21, so that it can be driven by its own drive 22 at a higher speed than the support discs 17' and 18 '.
  • the drive 22 is a friction wheel drive 22 'with its own motor 23. It is therefore possible for the shaft 20 with the support disks 17' and 18 'to run at the machine speed while the transport disc 16 'rotates faster. In order to ensure a perfect friction wheel drive 22 ', a sprung friction wheel 22' 'is provided which presses into the gap between the friction wheel drive 22' and the transport disk 16 '.
  • stops 19 are adjustable parallel to the shaft 20.
  • a device 25 shown in FIG. 2 serves this purpose.
  • the transport disk 16 ' has radially directed suction openings 27 which end at its circumference 26.
  • the suction openings 27 serve together with suction air, i.e. together with a pressure relative to the atmospheric pressure generate such a traction means that the transport disk 16 'acting as a driver 16' detects the object to be aligned 6 'or envelope blank 6 in the region of its front edge 6' 'and takes it along according to its own peripheral speed.
  • the suction openings 27 hold and pull the object 6 'until its front edge 6' 'strikes one or both stops 19 and is thereby aligned and braked at their speed.
  • the diameter of the transport disk 16 ' can be dimensioned such that it is suitable for aligning one or more objects 6'.
  • the suction openings 27 are combined to form axially parallel rows and connected to likewise axially parallel suction channels 28, which are open towards one end 29 of the transport disk 16 '.
  • an annular disk 30 with bores 31 is also attached to the transport disk 16 ′, each of which is aligned with the suction channels 28.
  • the suction openings 27 and suction channels 28 in the transport disk 16 ' have to use a vacuum generator at times because of the negative pressure / because of the suction air during operation get connected.
  • a suction head 32 which is stationary during operation and has a suction connection pipe 33 and a control valve body 34 and the design of the support disk 17 ', which is arranged on the end face 29 of the transport disk 16', serve this purpose.
  • the support disk 17 ' is arranged with its hub 34a on the shaft 20 and rotates with it during operation.
  • the hub 34a carries, for example with the aid of ball bearings 35, the suction head 32 which does not rotate during operation and which has an axis-parallel bore 36 which is connected to the suction connection pipe 33.
  • the suction head 32 includes the control valve body 34 which also does not rotate during operation and which has a control channel 37 which is connected to the bore 36 and extends in the form of a segment in the direction of rotation over a little more than 90 °.
  • This control channel 37 is also open to the support disk 17 '.
  • the support disk 17' has a control window 38 open to the control channel 37, which is connected via a radially directed bore 39 and a short, axially parallel bore 40 to a suction segment 41, which in turn interacts with the suction channel (s) 28 in the transport disk 16 '.
  • the support disk 17 ' not only has three stops 19 like the other support disk 18', but it is also provided with three control windows 38, 38 'and 38' 'and respectively associated, radially directed bores 39 , 39 'and 39' 'and associated suction segments 41, 41' and 41 ''.
  • Each suction segment 41 has a suction window 43 which is dimensioned such that it completely covers at least one suction channel 28 in the transport disk 16 'or two adjacent suction channels 28, 28' partially.
  • the transport disk 16 ′ can have suction openings 27 along a single row for grasping an object 6 ′ to be aligned, or else several suction openings 27 arranged in parallel rows for pulling the object 6 ′.
  • the cross section of the suction openings 27 can also be circular like bores or slit-shaped.
  • the suction head 32 with the connected suction connection pipe 33 leading to a vacuum generator stops during operation it has at least one holding element 44 (FIG. 3), to which a holding arm 46 (FIG. 2) attached to the machine frame 45 is assigned is.
  • the envelope blanks 6 are regulated or aligned along an alignment section 50 (FIG. 1) which is curved.
  • this is a circular segment-shaped path piece, since the alignment on the cylindrical circumference of a rotating transport disk 16 'and with the aid of two support disks 17' and 18 '.
  • the invention is not limited to such an embodiment, since it can also be implemented along another type - such as along a path or alignment section 50a extending in one plane.
  • 5-8 relate to a device 1a of this type with a flat alignment section 50a, features of the same type having the same reference numbers as the device 1 and additionally the letter index a.
  • the objects 6'a to be aligned with the aid of the device 14a are in turn envelope blanks 6a which come, for example, from a drying device with closing flaps directed towards the rear and in a staggered state. They are therefore first of all separated and accelerated with the aid of a short and disc-shaped segment roller 62a arranged below a working level 61a and a preferably pivotally mounted suction roller 63a arranged above the working level 61a and transferred to a carrier 16a which individually transports the envelope blanks 6a.
  • the driver 16a is a toothed belt 64a and moves in the working plane 61a of a flat alignment section 50a at a defined speed.
  • the driver 16a or toothed belt 64a lies with its upper run 65a in the working plane 61a and has suction openings 27a which serve as traction means and which are subjected to negative pressure or suction air.
  • the negative pressure is at the suction openings 27a along the entire alignment section 50a to which a suction box 66a is arranged on the underside of the toothed belt 64a.
  • Openings 68a associated with the suction openings 27a are located in a top wall 67a carrying the upper run 65a. As shown in FIG. 8, these openings 68a are relatively large in the transport direction and are only separated by webs 69a.
  • Sealing elements 71a are also arranged laterally on the suction box 66a for sealing and guiding the suction or toothed belt 64a. Connections 72a finally lead from the suction box 66a to a vacuum generator, not shown in the figures.
  • a further toothed belt 73a is arranged on each side of the toothed belt 64 serving as driver 16a.
  • These toothed and regulating belts 73a each serve as supports 17a, 18a for stops 19a.
  • the stops 19a can be set at a distance from one another (transversely to the transport direction, FIG. 7).
  • the stops 19a serving as regulating cams are arranged on the toothed and regulating belts 73a in the direction of the alignment section 50a at equal distances from one another. You can expediently also be molded directly onto the respective toothed belt 73.
  • the two toothed and regulating belts 73a run with their upper runs 74a in the same direction and likewise in the working plane 61a Suction or toothed belt 64a. However, the timing and regulating belts 73a move at a lower speed than the suction and timing belts 64a.
  • the position and arrangement of the suction openings 27a serving as traction means in the suction and toothed belt 64a is selected such that the objects 6 'or envelope blanks 6a to be aligned are gripped by the suction and toothed belt 64a in the area of their leading edge 6''a get picked up.
  • the envelope blanks 6a are pulled along the alignment path 50a at the higher speed of the suction and toothed belt 64a until they come to rest with their edges 6'a at the stops 19a and align themselves with them.
  • the suction and toothed belt 64a then slips easily with a small amount of slip on the envelope blank 6a until the suction and toothed belt 64a delivers the envelope blank 6a to rollers 75a and 76a which are transported further.
  • the segment roller 62a shown in FIGS. 5 and 6 and used to pull out the staggered envelope blanks 6a consists specifically of two disks 84a arranged on a shaft 83'a and driven by this, each with segment elements 85a arranged on their circumference.
  • the suction roller 63a assigned to the segment roller 62a comprises a roller body 86a which is connected in a rotationally fixed manner to a driven shaft 87a and is mounted in laterally arranged swivel arms 88a.
  • FIG. 6 shows the suction roller 63a in a position pivoted away from the illustration in FIG. 5.
  • Control valves 89a are provided on each end of the roller body 86a. They do not rotate with the shaft 87a nor with the roller body 86a.
  • continuous suction channels 90a are provided close to the circumference axially from the end face to the end face and are connected to the cylinder jacket 92a via radially directed bores 91a.
  • the suction channels 90a are acted upon one after the other on the short side in each case by negative pressure or suction air and atmospheric pressure.
  • the control valves 89a are used for this purpose, in each of which there is a short suction channel 93a, which is in air-conducting connection with a suction connection piece 94a. Further is A channel 95a is provided in the control valves 89a, via which the suction channels 90a in the roller body 86a are supplied with atmospheric pressure.
  • the objects 6'a or the envelope blanks 6a are sucked in by the suction roller 63a, slightly raised in an arc from their staggered state - which prevents snagging, particularly in the case of window envelopes - and furthermore they become with the segment roller 62a isolated.
  • the envelope blanks 6a are delivered to the toothed belt 64a serving as the driver 16a, whereupon the alignment takes place with the aid of the toothed belts 64a and 73a.

Landscapes

  • Delivering By Means Of Belts And Rollers (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Making Paper Articles (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
EP97103681A 1996-03-14 1997-03-06 Procédé et dispositif pour aligner des objets plats Expired - Lifetime EP0795503B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19609991 1996-03-14
DE19609991A DE19609991A1 (de) 1996-03-14 1996-03-14 Verfahren und Vorrichtung zum Ausrichten von flachen Gegenständen, insbesondere von Briefumschlägen

Publications (3)

Publication Number Publication Date
EP0795503A2 true EP0795503A2 (fr) 1997-09-17
EP0795503A3 EP0795503A3 (fr) 1998-06-10
EP0795503B1 EP0795503B1 (fr) 2000-01-12

Family

ID=7788240

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97103681A Expired - Lifetime EP0795503B1 (fr) 1996-03-14 1997-03-06 Procédé et dispositif pour aligner des objets plats

Country Status (5)

Country Link
US (1) US5938193A (fr)
EP (1) EP0795503B1 (fr)
JP (1) JP4007520B2 (fr)
DE (2) DE19609991A1 (fr)
ES (1) ES2143262T3 (fr)

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US3690646A (en) * 1970-07-08 1972-09-12 Addressograph Multigraph Electrostatic conveyor
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EP0356864A2 (fr) * 1988-09-02 1990-03-07 Hitachi, Ltd. Appareil pour régler la position des feuilles
GB2289887A (en) * 1994-06-01 1995-12-06 Gd Spa Device for feeding blanks to a user machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001040091A1 (fr) * 1999-12-02 2001-06-07 Koenig & Bauer Aktiengesellschaft Cylindre aspirant
US6688594B2 (en) 1999-12-02 2004-02-10 Koenig & Bauer Aktiengesellschaft Suction roll

Also Published As

Publication number Publication date
JP4007520B2 (ja) 2007-11-14
JPH1095555A (ja) 1998-04-14
EP0795503A3 (fr) 1998-06-10
ES2143262T3 (es) 2000-05-01
EP0795503B1 (fr) 2000-01-12
DE19609991A1 (de) 1997-09-18
DE59700990D1 (de) 2000-02-17
US5938193A (en) 1999-08-17

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