EP3251992A1 - Système de ralentisseur de feuilles pour un receveur de feuilles d'une machine d'impression de feuilles - Google Patents

Système de ralentisseur de feuilles pour un receveur de feuilles d'une machine d'impression de feuilles Download PDF

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Publication number
EP3251992A1
EP3251992A1 EP17173325.6A EP17173325A EP3251992A1 EP 3251992 A1 EP3251992 A1 EP 3251992A1 EP 17173325 A EP17173325 A EP 17173325A EP 3251992 A1 EP3251992 A1 EP 3251992A1
Authority
EP
European Patent Office
Prior art keywords
sheet
suction
roll
brake assembly
assembly according
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Withdrawn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
EP17173325.6A
Other languages
German (de)
English (en)
Inventor
Harald Bayer
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.)
Manroland Sheetfed GmbH
Original Assignee
Manroland Sheetfed 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 Manroland Sheetfed GmbH filed Critical Manroland Sheetfed GmbH
Publication of EP3251992A1 publication Critical patent/EP3251992A1/fr
Withdrawn legal-status Critical Current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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/68—Reducing the speed of articles as they advance
    • B65H29/686—Pneumatic brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/15—Roller assembly, particular roller arrangement
    • B65H2404/152—Arrangement of roller on a movable frame
    • B65H2404/1521—Arrangement of roller on a movable frame rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/15—Roller assembly, particular roller arrangement
    • B65H2404/152—Arrangement of roller on a movable frame
    • B65H2404/1521—Arrangement of roller on a movable frame rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis
    • B65H2404/15212—Arrangement of roller on a movable frame rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis rotating, pivoting or oscillating around an axis perpendicular to the roller axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention relates to a sheet brake arrangement, in particular for the display area of a sheet processing machine, for example a sheet-fed printing press according to the preamble of claim 1.
  • the printing material In the case of sheet-fed presses, the printing material must be braked and brought to a standstill within a short delay distance of a speed corresponding to the machine speed in the area of the boom in order then to sink cleanly onto the delivery pile.
  • the substrate weights, the format lengths and the format widths vary depending on the print job to be processed and, depending on the format, type and printing of the substrate, different braking requirements result.
  • the deceleration of the printing material is carried out using suction belts or suction rollers. If there is insufficient deceleration of the sheet collides with the attacks of the boom, in which case markings can occur at the sheet edge regions.
  • a method for controlling an axially adjustable sheet brake is known.
  • a boom of a printing machine movable sheet brakes on a drive shaft and the sheet brakes with their suction bodies receiving guide beam and a parallel to the guide beam rack are provided in or against the conveying direction by means of guide carriage.
  • Each sheet brake has a drive motor coupled to a controller whose pinion is paired with the rack. The drive motor of a sheet brake is activated in such a way that the sheet brake is set axially movable to a position with the drive shaft rotating.
  • a sheet conveyor which provides for reducing the speed of sheets during conveyance in a boom of a printing press a guided over rollers and provided with air passages conveyor belt and arranged between the rollers suction chambers, which have adjacent to the conveyor belt suction openings.
  • the sheets to be conveyed are sucked by means of a negative pressure generated in the suction chambers to the conveyor belt.
  • Suction chambers and suction openings are formed by parallel plates, wherein the conveyor belt runs in the space between the plates close to this fitting. The suction openings are limited in the longitudinal direction by the rollers for guiding the conveyor belt.
  • a sheet brake of a sheet-processing printing machine and a method for depositing sheet which has for displacement on pressure-free corridors axially adjustable suction rings for acting on sheet conveyed in the sheet running direction.
  • the suction rings are arranged to cross-tighten the sheet in the sheet travel direction diverging.
  • brake bands are provided for retarding the arc, wherein the suction rings and brake bands are arranged one behind the other in the sheet running direction.
  • the invention has for its object to provide a sheet brake assembly of the type mentioned above, which is characterized by a robust and cost-effective construction and a sufficient delay of a sheet in the region of a boom of a sheet processing machine while gently contacting the same allows.
  • the suction wheels offer a high braking performance with gentle contacting of the printing material.
  • the printing material can be guided over the inventive arrangement over a large distance and there is a lower risk compared to previous designs of bow damage or scratching of the printed image.
  • the use of wear-prone suction belts, which would have to be replaced regularly, is eliminated.
  • the inventive concept also makes it possible in an advantageous manner to manufacture the brake assembly as a module that allows in conjunction with this leading rail or rod structure a simple adaptation of the machine to different formats.
  • the suction surface is formed by slightly curved mantle zones of three or more suction wheels which are brought approximately to the effective surface of suction belts used at this point.
  • the construction can be kept simple.
  • the suction wheels are preferably driven by friction.
  • the printing material can continue to be guided in the direction of the stacking plate.
  • the sheet brake assembly according to the invention can be tilted towards the stacking plate at the beginning of printing to reduce the drop height.
  • the Saugrate the sheet brake assembly according to the invention are easy to clean or change and relatively insensitive to contamination. There must be no difference between fine and turning printing machines.
  • the Saugrate the sheet brake assembly according to the invention can be made in proven color-repellent materials. The coupling of the Saugrate between these effective Fritechnischmieswalzen are made for example of polyurethane and are also easy to clean and replace.
  • this is designed such that the suction wheels are coupled together for common rotation.
  • This coupling can be realized, in particular, by elastomeric rollers, preferably from the region of a lower, i.e. The roll gap region facing away from the respective guide web projects towards the suction wheels and thus couples them in a friction-locked manner in the same direction in a rotatable manner.
  • These rollers can be driven in a defined manner and controlled for deceleration.
  • the suction wheels are combined in the sheet brake device according to the invention to a Saugrastmodul, said Saugrastmodul is then preferably arranged transversely to the sheet running direction and parallel to the sheet career displaced.
  • This displaceability can be achieved by the Saugratemodul slidably guided, for example on a linkage or rail device and in a respectively required position therein fixed, eg clamped.
  • the negative pressure can be accomplished in an advantageous manner via a suction line device.
  • the extracted air can be fed to a filter device, so that, as a result of the sheet braking device according to the invention, overall an emission reduction in the area of the boom, e.g. Powder or paper dust, is achievable.
  • a suction device in particular a fan, which, or which is still housed in the Saugziermoduls and supplied for example by electrical means with energy and, if necessary is adjusted in terms of its suction power.
  • the impeller module according to the invention can be designed and integrated into the arm such that the inclination of the plane defined by the axes of the impellers, i. the inclination of the defined by the sheet contacting the sheath sections defined career is adjustable variable.
  • an advantageous sequence of the sheets can take place on the still relatively low-lying stacking plate or stacking pallet.
  • the Saugrastmodul invention is preferably designed such that the negative pressure of the Saugrate is essentially limited to their intended for Bogen prominence ist peripheral portions. This makes it possible to achieve a high suction at low suction air flow.
  • the limitation of the suction effect can be achieved by appropriate enclosure of the suction wheels or by shaping the hub region such that only the respective leading to the bow channels of the suction roll communicate with a formed in the hub and leading to the vacuum source communication path.
  • devices in the manner of rotary valves may be provided to limit or extend the range of air supply to a respective suction roll.
  • the roll shells can be formed according to a particular aspect of the present invention by ring elements, which are optionally placed with slight elastic expansion on a Saugzierkern. These ring coats can be made in an advantageous manner from a color-repellent plastic material, which offers sufficient friction properties.
  • the Saugrastmodul can be designed so that in the context of simple maintenance, the ring coats are tool-free from the respective Saugrastkern removable.
  • FIG. 1 illustrates in the form of a simplified perspective view of the structure of a sheet brake assembly according to the invention.
  • This sheet brake assembly serves to decelerate a sheet B tapered along a sheet running direction F in the region of a cantilever.
  • the sheet brake assembly according to the invention comprises a first suction roll S1 which is rotatable about a first roll axis X1 and forms a first annular roll shell W1 provided for sheet contacting.
  • the sheet brake assembly comprises a second suction roll S2 which is rotatable about a second roll axis X2 and forms a provided for Bogentitle ist second annular roll shell W2.
  • the sheet brake assembly also comprises a third suction roll S3 which is rotatable about a third roll axis X3 and forms a third annular roll shell W3 provided for sheet contacting.
  • roller axes X1, X2, X3 are aligned parallel to each other and spaced apart in the sheet running direction F, that the annular Roll shells W1, W2, W3 with a provided for BogenAuthierung circumferential portion of about 20 to 45 ° in a sheet zone, where between two adjacent Saugsen S1 / S2 or S2 / S3 each a web element B1, B2 is arranged, the one between the adjacent Saugrate S1 / S2 or S2, S3 formed nip G1, G2 covering and forms a sheet guide path between the following provided for Bogentraining ist peripheral portions of the annular roll shells W1, W2, W3.
  • the suction wheels S1, S2, S3 provide a high braking performance with gentle contacting of the printing B.
  • the substrate B can be guided over the device of the invention over a large running distance and there is a lower risk compared to previous designs bow damage or scratching of the printed image.
  • the inventive concept also makes it possible advantageously to realize the sheet brake device in the manner of a mounting unit as Saugckenmodul 1, which is slidably guided on a linkage device 2, 3 and thus positionally variable to different formats of processed in the sheet-fed press and to be braked printing material B is adaptable ,
  • the suction surface is formed by three or more suction wheels S1, S2, S3 which are approximately brought to the normally traversed by the sheet B surface.
  • the construction is relatively compact and inexpensive to implement.
  • the suction wheels S1, S2, S3 are coupled together by friction here. They can be driven by an electronic drive device with a specific, adapted to the braking speed profile, but they can also be designed as only braked roles. It is possible the gear ratio between these suction wheels S1, S2, S3 set so slightly distorted that on the Saugrastan angel a tendency to bow tightening, ie in the sheet running direction B downstream roll slightly, for example by 0.8 to 1.5% faster rotates.
  • This effect can be achieved by incorporating the friction coupling rollers K1, K2 into the assembly so as to be driven by a peripheral portion of the driving roller whose diameter is larger than the diameter of the peripheral portion of the driven roller. It is also possible to bring about the braking effect by braking the suction roller S1 located upstream in sheet travel direction B, so that a certain internal slip occurs due to the frictional coupling of the suction wheels S1, S2, S3 via the friction rollers K1, K2.
  • the braking device can be tilted at the start of printing in sheet travel direction F to the stacking plate of the sheet delivery back to reduce the drop height.
  • the suction wheels S1, S2, S3 are accessible on one side via an open journal and easy to clean or change and relatively insensitive to contamination.
  • the suction wheels S1, S2, S3, but at least the annular roller jackets W1, W2, W3 mounted on the suction wheels S1, S2, S3 are made of a color-reflecting plastic material.
  • the friction rollers K1, K2 are made of polyurethane here.
  • the suction wheels S1, S2, S3 are coupled to rotate together via the friction rollers K1, K2.
  • the three suction wheels S1, S2, S3 are combined to form a Saugrastmodul 1, which is transversely to the sheet running direction B and parallel to the sheet running track BLB on the linkage 2, 3 displaceable and steplessly positionable via a clamping mechanism 4.
  • the negative pressure is accomplished via a Saug effets driven 5, which is connected to a corresponding vacuum source.
  • the Saugganmodul 1 is formed and incorporated into the boom, that the inclination of the provided by the BogenAuthtechnik shell sections the annular roller shells W1, W2, W3 defined career is adjustable changeable.
  • the negative pressure of the Saugrate S1, S2, S3 is essentially limited to their intended for Bogencript réelle shell sections on the periphery. This can be achieved by shielding the zones of the suction wheels S1, S2, S3 which are not in contact with the arc from the outside, or are sealed off from the vacuum source by a channel guide formed in cooperation with the hub pins, so that these only come into contact with the sheet in each case enabling rotational position are subjected to negative pressure.
  • the corresponding device may be designed in the manner of a rotary valve for limiting or expansion of the air supply to the suction wheels S1, S2, S3 serving elements.
  • suction wheels S1, S2, S3 in such a way that the roller shells W1, W2, W3 are designed as ring elements which are placed on a respective suction wheel core (hub) 9.
  • the suction wheels S1, S2, S3 are mounted on hub pins Z1, Z2, Z3. These hub pins Z1, Z2, Z3 are anchored to a support plate 7.
  • This support plate 7 forms guide holes 6 and is on the linkage 2, 3 transversely to the sheet travel direction F and parallel to the sheet plane 4 infinitely adjustable positionable.
  • the fixation in the respectively desired position transversely to the sheet travel direction F is effected by a clamping mechanism 8.
  • the web elements B1, B2 are formed so that they are brought to the suction wheels S1, S2, S3 while leaving a small movement gap and cover the roller gaps G1, G2 in such a way that the tapered arc can not penetrate into them.
  • the suction air supply to a respective previous suction S1, S2 are interrupted in good time before the transition to the web elements B1, B2, so that the substrate B can take off there.
  • the web elements B1, B2 form sliding surfaces which can be formed as flat surfaces and lead the bow.
  • the web elements B1, B2 can be small holes be introduced, via which a slight blowing can be done to form an air cushion, so that the webs do not contact the substrate directly.
  • the web elements B1, B2 can for this purpose also be formed of a porous material, for example a sintered material made of metal or plastic beads, in particular Teflon beads, over or by which a slight underblowing of the bearing surface can be made possible.
  • adjusting means may in particular comprise electromagnetically controllable and with regard to their braking torque correspondingly variable braking structures.
  • means for detecting the rotation of the Saugender S1, S2, S3 and the position of the leading edge of the sheet B may be provided. These sensors make it possible to tune the braking effect of the Saugratemoduls 1 so that a particularly gentle, yet sufficient delay of the arc on the Saugratemodul 1 can be achieved.
  • Measuring means can also be provided which make it possible to detect the braking torque generated by the suction wheels S1, S2, S3 and, if necessary, to optimize them.
  • the suction wheels S1, S2, S3 may have a circumferential profile which causes an effective transmission of the frictional force.
  • the webs B1, B2 may be profiled complementarily in the region of their sides facing the suction wheels S1, S2, S3 flanks to the outer profile of the Saugrate S1, S2, S3, so that entry of the printing material in any between the suction wheels S1, S2, S3 and the webs B1, B2 remaining column is further prevented.
  • the webs B1, B2 can also be connected to each other by laterally mounted strips.
  • the braking torque can be applied to the suction wheels S1, S2, S3 and / or the coupling rollers K1, K2.
  • the braking torque is preferably adjustable adjustable via actuators. These actuators can be designed so that the braking torque adjusted taking into account the current sheet position becomes. It is also possible to generate the deceleration torque via electromotive drive of the suction wheels S1, S2, S3 and / or the coupling rollers K1, K2, wherein the drive of the corresponding electric motors takes place in view of the desired arc deceleration. In this case, a speed reduction to a non-critical for the emergence of marks residual speed and then a defined residual sheet displacement over a short final distance to reach the storage position can be realized.
  • Fig. 2 is an elevation of the Saugratemoduls 1 with the suction wheels S1, S2, S3, the coupling rollers K1, K2, the linkage of the shafts 2, 3 and the sheet track 4 shown.
  • the shaft 3 is formed as a drive shaft for the coupling rollers K1, K2 and transmits the conveying movement by means of the roller jackets W1, W2, W3 on the suction wheels S1, S2, S3.
  • These are supplied by a Saugluftzu operation 5 with suction air, which are passed via suction segments 12 on the outside of the Saugcken S1, S2, S3.
  • the suction segments 12 are determined in their length by an air control inside the suction wheels S1, S2, S3, which air passages in the manner of a rotary valve control, so that the length and the position of a suction segment 12 in sheet travel direction F at each suction S1, S2, S3 can be set.
  • the shaft 2 serves to guide the carrier element 7 for transverse displacement of the Saugrastmoduls 1 and the shaft 3 serves as a drive shaft for the Saugrast S1, S2, S3 via the coupling rollers K1, K2.
  • the Saugrastmodul 1 can in sheet travel direction, for example, around the shaft 2 in the direction of the right above in Fig. 2 shown double arrow P1 are pivoted.
  • the sheet career 4 can be lowered from the inlet left for sheet delivery right.
  • a lowered position is shown in dashed lines, so that the sheet running plane 4 in the dashed representation comes closer to the surface of the adjoining the Saugziermodul 1 boom stack 13 and a sheet transfer can be made easier and safer.
  • Fig. 3 shows a plan view of an embodiment of the Saugziermoduls 1, which is provided with a web track 10 which extends in the sheet braking area on both sides next to the suction wheels S1, S2, S3 in the sheet running direction F.
  • the web web 10 serves to guide the sheet in addition to the web elements B1, B2 in the nips between the suction wheels S1, S2, S3.
  • openings 11 are provided, in which the suction wheels S1, S2, S3 with their sheet braking serving peripheral portions of the roll coats W1, W2, W3 extend.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
EP17173325.6A 2016-05-29 2017-05-29 Système de ralentisseur de feuilles pour un receveur de feuilles d'une machine d'impression de feuilles Withdrawn EP3251992A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016006289 2016-05-29

Publications (1)

Publication Number Publication Date
EP3251992A1 true EP3251992A1 (fr) 2017-12-06

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EP17173325.6A Withdrawn EP3251992A1 (fr) 2016-05-29 2017-05-29 Système de ralentisseur de feuilles pour un receveur de feuilles d'une machine d'impression de feuilles

Country Status (2)

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EP (1) EP3251992A1 (fr)
DE (1) DE102017111670A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4019731A (en) * 1975-07-23 1977-04-26 Vits-Maschinenbau Gmbh Device for placement of rhythmically conveyed sheets on a stack
EP0178470A2 (fr) * 1984-10-13 1986-04-23 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de sotie de feuilles sur une machine à imprimer
JP2001261210A (ja) * 2000-03-23 2001-09-26 Toppan Printing Co Ltd 枚葉印刷機
DE102007000918A1 (de) * 2007-08-01 2009-02-05 Koenig & Bauer Aktiengesellschaft Bremsvorrichtung zum Bogenbremsen an einer Bogendruckmaschine
DE102008031710A1 (de) * 2008-07-04 2010-01-07 Manroland Ag Bogenausleger einer Bedruckbogen verarbeitenden Maschine, insbesondere Rotationsdruckmaschine
DE102012206923A1 (de) * 2011-04-26 2012-10-31 Koenig & Bauer Aktiengesellschaft Bogenkontaktvorrichtung mit mindestens einem zur Bogenquerstraffung bezüglich einer Bogenlaufrichtung neigungsverstellbaren umlaufenden oder rotierenden Bogenkontaktelement, Verfahren zur Neigungsverstellung und Verwendung eines Kraftimpulses zur Neigungsverstellung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19740337C2 (de) 1997-09-13 1999-07-15 Roland Man Druckmasch Bogenfördereinrichtung
DE19926401C1 (de) 1999-06-10 2001-03-15 Roland Man Druckmasch Verfahren zur Steuerung einer axial einstellbaren Bogenbremseinrichtung
DE102008042901B4 (de) 2008-10-16 2025-08-28 Koenig & Bauer Ag Bogenbremse einer bogenverarbeitenden Maschine, insbesondere Druckmaschine, und ein Verfahren zum Ablegen von Bogen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4019731A (en) * 1975-07-23 1977-04-26 Vits-Maschinenbau Gmbh Device for placement of rhythmically conveyed sheets on a stack
EP0178470A2 (fr) * 1984-10-13 1986-04-23 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de sotie de feuilles sur une machine à imprimer
JP2001261210A (ja) * 2000-03-23 2001-09-26 Toppan Printing Co Ltd 枚葉印刷機
DE102007000918A1 (de) * 2007-08-01 2009-02-05 Koenig & Bauer Aktiengesellschaft Bremsvorrichtung zum Bogenbremsen an einer Bogendruckmaschine
DE102008031710A1 (de) * 2008-07-04 2010-01-07 Manroland Ag Bogenausleger einer Bedruckbogen verarbeitenden Maschine, insbesondere Rotationsdruckmaschine
DE102012206923A1 (de) * 2011-04-26 2012-10-31 Koenig & Bauer Aktiengesellschaft Bogenkontaktvorrichtung mit mindestens einem zur Bogenquerstraffung bezüglich einer Bogenlaufrichtung neigungsverstellbaren umlaufenden oder rotierenden Bogenkontaktelement, Verfahren zur Neigungsverstellung und Verwendung eines Kraftimpulses zur Neigungsverstellung

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