EP0926086B1 - Feed table with belts for sheets in underlapping formation - Google Patents

Feed table with belts for sheets in underlapping formation Download PDF

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Publication number
EP0926086B1
EP0926086B1 EP98123821A EP98123821A EP0926086B1 EP 0926086 B1 EP0926086 B1 EP 0926086B1 EP 98123821 A EP98123821 A EP 98123821A EP 98123821 A EP98123821 A EP 98123821A EP 0926086 B1 EP0926086 B1 EP 0926086B1
Authority
EP
European Patent Office
Prior art keywords
flanks
extensible element
running surface
transport
belts
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 - Lifetime
Application number
EP98123821A
Other languages
German (de)
French (fr)
Other versions
EP0926086A3 (en
EP0926086A2 (en
Inventor
Harald Bayer
Thomas Herrmann
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 AG
Original Assignee
MAN Roland Druckmaschinen AG
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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0926086A2 publication Critical patent/EP0926086A2/en
Publication of EP0926086A3 publication Critical patent/EP0926086A3/en
Application granted granted Critical
Publication of EP0926086B1 publication Critical patent/EP0926086B1/en
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
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/02—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains
    • B65H5/021—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts
    • 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
    • B65H2404/20—Belts
    • B65H2404/25—Driving or guiding arrangements
    • B65H2404/251—Details of drive roller
    • B65H2404/2511—Arrangement for varying outer diameter, e.g. for adjusting speed or belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/14—Diameter, e.g. of roll or package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed

Definitions

  • the improvement concerns a belt table for those to be transported under shingled Bow according to the preamble of claim 1.
  • a conveyor table for conveying in particular, a shingled stream of sheets is known.
  • this Belt table are elastically deformable conveyor rollers leading into the suction belts Ring elements embedded.
  • the ring elements can by axial displacement of the parts carrying these elements are squeezed so that they are theirs Change diameter. This will reduce the peripheral speed and therefore the belt speed also changed.
  • a disadvantage of the shown The device is that rubber rings are provided as elastic elements. The Resistance to aging of these elements is not sufficient, so that the Adjustment characteristic of the device deteriorates over time.
  • the object of the improvement is therefore a corresponding device create that shows no age wear.
  • a belt table 1 is shown, the two conveyor belts 2 for sheet B. having.
  • the conveyor belts 2 are driven about an axis 3 and by another axis deflected.
  • On the axis 3 there are two deflection rollers 4, 5 arranged.
  • the deflection rollers 4, 5 are adjusting devices 6, 7 assigned.
  • the adjustment devices 6, 7 serve to determine the scope of the Change pulleys 4, 5. It can also suffice here Deflection pulley fixed and the other only adjustable.
  • FIG. 2 A detail of the deflection roller 4 is shown in more detail in FIG. 2.
  • a suction belt 2 is shown above a suction box 8.
  • suction belt 2 and suction box 8 are used to transport the sheet D.
  • the suction belt 2 is redirected on the pulley 4.
  • the suction belt 2 runs over an elastic Expansion element 10.
  • the expansion element 10 is annular. It can for example in the form of a metal bellows element.
  • the Expansion element 10 sits on a guide element 11 of the deflection roller 4 and is by means of a screw connection 12 from a further guide element 13 Deflection roller 4 loaded.
  • the axial bracing takes place via an adjusting shaft 14, which is rotatably mounted within the guide roller 4.
  • the Expansion element 10 has a tread 20 on the circumference and lateral, radial extending flanks 21.
  • the flanks 21 are in the direction the axis of rotation braced against each other to create a Increase in diameter of the tread 20 or an increase in circumference to reach. Since a metallic element has an elasticity, it does but more to a bend, less to a stretch further measures are necessary for an efficient mode of operation meaningful.
  • the expansion element 10 is provided with expansion joints 22 which are transverse to Tread 20 run. The expansion joints open to avoid Voltage peaks each correlating in openings 23 in both sides of the Expansion element 10.
  • the openings 23 are preferably circular. But there are others, the effect of reducing voltage spikes Cross-sectional shapes reaching for the openings 23 are conceivable.
  • the change in diameter is caused by axial bending reached. Due to the pressure on the flanks 21, the bend accordingly Tread parts between the expansion joints 22 to the outside and the expansion joints 22 open in the tangential direction of the tread 20. This makes the circumference the tread 20 increases and the peripheral speed increases leading suction belt 2 increased. A provision has this accordingly opposite effect.
  • the opening of the expansion joints 22 has no disadvantage Effects on the guidance of the suction belt 2.
  • the effect of increasing the diameter can also be radially from the inside the treads 20 acting control elements can be reached.
  • the required largely circular cylindrical shape of the expansion elements 10 is due to their inner Maintain structure.
  • the device is not only for guiding suction belts 2 but by everyone Suitable for transport belts to be provided for sheet transport.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Endoscopes (AREA)
  • Making Paper Articles (AREA)
  • Paper (AREA)
  • Tyre Moulding (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Structure Of Belt Conveyors (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)

Abstract

The device has a conveyor belt table around which conveyor belts run, transport rollers for guiding belts and devices for altering diameter of at least one driven transport roller. Within one transport roller is provided an elastic expansion component (10) of metal, which in the area of an outer running surface (20) acting indirectly or directly for guiding at least one conveyor belt, has a weakened area. The expansion component has the form of a metal bellows U-shaped in cross-section. The expansion component is provided with two concentric, face-side flanks (21) and a cylindrical cover surface connecting the flanks and forming a running surface. In the area of the running surface, parallel to the rotation axis, expansion seams (22) are provided.

Description

Die Verbesserung betrifft einen Bändertisch für unterschuppt zu transportierende Bogen nach dem Oberbegriff des Anspruchs 1.The improvement concerns a belt table for those to be transported under shingled Bow according to the preamble of claim 1.

Es ist bekannt in Bändertischen zur Zufuhr von Bogen zu Bogen verarbeitenden Maschinen Einrichtungen vorzusehen, mittels derer die Transportgeschwindigkeit der Bänder unabhängig voneinander verändert werden kann. Dadurch kann die Transportlage der Bogen beeinflußt werden.It is known in belt tables for feeding sheet to sheet processing Machines to provide facilities by means of which the transport speed the tapes can be changed independently. This allows the Transport position of the bow can be influenced.

Zum Beispiel ist aus der DE 4040830A1 ein Bändertisch zum Fördern insbesondere eines geschuppten Stroms von Bogen bekannt. In diesem Bändertisch sind in die Saugbänder führenden Förderrollen elastisch verformbare Ringelemente eingelassen. Die Ringelemente können durch Axialverschiebung der diese Elemente tragenden Teile gequetscht werden, so daß sie ihren Durchmesser verändern. Dadurch wird die Umfangsgeschwindigkeit und damit auch die Bändergeschwindigkeit verändert. Nachteilig an der gezeigten Vorrichtung ist, daß als elastische Elemente Gummiringe vorgesehen sind. Die Alterungsbeständigkeit dieser Elemente ist nicht ausreichend, so daß die Verstellcharakteristik der Vorrichtung mit der Zeit schlechter wird.For example, from DE 4040830A1 a conveyor table for conveying in particular, a shingled stream of sheets is known. In this Belt table are elastically deformable conveyor rollers leading into the suction belts Ring elements embedded. The ring elements can by axial displacement of the parts carrying these elements are squeezed so that they are theirs Change diameter. This will reduce the peripheral speed and therefore the belt speed also changed. A disadvantage of the shown The device is that rubber rings are provided as elastic elements. The Resistance to aging of these elements is not sufficient, so that the Adjustment characteristic of the device deteriorates over time.

Aufgabe der Verbesserung ist es daher eine entsprechende Vorrichtung zu schaffen, die keinen Altersverschleiß aufweist.The object of the improvement is therefore a corresponding device create that shows no age wear.

Die Lösung dieser Aufgabe kennzeichnet sich durch die Merkmale des Patentanspruches 1. Hierbei wird anstatt eines Gummiringes ein metallisches elastisches Element eingesetzt. Dieses elastische Element verliert über die Lebensdauer der Maschine seine Federcharakteristik nicht. Damit bleibt die Verstellmöglichkeit der Bändergeschwindigkeit immer erhalten. Zur Verbesserung und feinfühligeren Einstellung kann das elastische Element seitlich und in der Lauffläche geschlitzt werden. Damit ergibt sich eine weichere und besser einstellbare Charakteristik des metallischen Elementes.The solution to this problem is characterized by the features of Claim 1. This is a metallic instead of a rubber ring elastic element used. This elastic element loses over the Life of the machine its spring characteristics not. That leaves the Always keep the belt speed adjustable. For improvement and more sensitive adjustment can the elastic element laterally and in the Tread slit. This results in a softer and better adjustable characteristic of the metallic element.

Im Folgenden wir anhand von zeichnerischen Darstellungen die Verbesserung näher dargestellt. Darin wird gezeigt in

Fig. 1
eine Übersicht über einen Bändertisch, in
Fig. 2
ein Detail einer Bänderwalze mit Verstellmöglichkeit und in
Fig. 3
ein Dehnelement im Detail.
In the following, the improvement is shown in more detail with the help of graphic representations. It shows in
Fig. 1
an overview of a conveyor table, in
Fig. 2
a detail of a belt roller with adjustment and in
Fig. 3
an expansion element in detail.

In Fig. 1 ist ein Bändertisch 1 dargestellt, der zwei Transportbänder 2 für Bogen B aufweist. Die Transportbänder 2 werden um eine Achse 3 angetrieben und von einer weiteren Achse umgelenkt. Auf der Achse 3 sind zwei Umlenkrollen 4, 5 angeordnet. Den Umlenkrollen 4, 5 sind Verstelleinrichtungen 6, 7 zugeordnet. Die Verstelleinrichtungen 6, 7 dienen dazu, den Umfang der Umlenkrollen 4, 5 zu verändern. Hierbei kann es auch genügen, die eine Umlenkrolle fest und die andere nur verstellbar zu machen.In Fig. 1, a belt table 1 is shown, the two conveyor belts 2 for sheet B. having. The conveyor belts 2 are driven about an axis 3 and by another axis deflected. On the axis 3 there are two deflection rollers 4, 5 arranged. The deflection rollers 4, 5 are adjusting devices 6, 7 assigned. The adjustment devices 6, 7 serve to determine the scope of the Change pulleys 4, 5. It can also suffice here Deflection pulley fixed and the other only adjustable.

In Fig. 2 ist ein Detail der Umlenkrolle 4 näher gezeigt. Gegenüber der Umlenkrolle 4 ist ein Saugband 2 über einem Saugkasten 8 dargestellt. Saugband 2 und Saugkasten 8 dienen dem Transport des Bogens D. Das Saugband 2 wird auf der Umlenkrolle 4 umgeführt. Dabei läuft das Saugband 2 über ein elastisches Dehnelement 10. Das Dehnelement 10 ist ringförmig ausgebildet. Es kann beispielsweise in Form eines Metallbalgelementes ausgeführt sein. Das Dehnelement 10 sitzt auf einem Führungselement 11 der Umlenkrolle 4 und wird mittels einer Schraubverbindung 12 von einem weiteren Führungselement 13 der Umlenkrolle 4 belastet. Die axiale Verspannung erfolgt über eine Stellwelle 14, die innerhalb der Umlenkrolle 4 drehbar gelagert ist. Durch Verdrehen der Stellwelle 14 wird mittels der Schraubverbindung 12 das Führungselement 13 über eine Druckscheibe 15 gegenüber dem Führungselement 11 verspannt. Dabei wird das Dehnelement 10 zusammengepreßt. Auf diese Weise wölbt sich das Dehnelement 10 in seiner Mitte auf. Damit vergrößert sich der Durchmesser des Dehnelementes 10, so daß sich auch seine Umfangsgeschwindigkeit vergrößert. Damit wird auch die Umlaufgeschwindigkeit des Saugbandes 2 entsprechend vergrößert. Durch Reduzierung des Druckes auf das Dehnelement 10 verringert sich die Umlaufgeschwindigkeit des Saugbandes 2 wieder entsprechend. Zur Vereinfachung des gesamten Systemes kann vorgesehen sein, daß nur ein einziger Verstellmechanismus bzw. eine Umlenkrolle 4 mit einem Dehnelement 10 versehen ist. Die zweite Umlenkrolle 5 wird dann auf immer mit der gleichen von ihrem Antrieb abhängigen Geschwindigkeit angetrieben. Die Umlenkrollen der mitlaufenden Welle auf der gegenüberliegenden Seite des Bändertisches 1 sind vorzugsweise unabhängig voneinander gelagert, damit die Geschwindigkeitsunterschiede zwischen den Transportbändern nicht in Schlupf auf der Welle übergehen und zu erhöhtem Verschleiß führen.A detail of the deflection roller 4 is shown in more detail in FIG. 2. Opposite the Deflection roller 4, a suction belt 2 is shown above a suction box 8. suction belt 2 and suction box 8 are used to transport the sheet D. The suction belt 2 is redirected on the pulley 4. The suction belt 2 runs over an elastic Expansion element 10. The expansion element 10 is annular. It can for example in the form of a metal bellows element. The Expansion element 10 sits on a guide element 11 of the deflection roller 4 and is by means of a screw connection 12 from a further guide element 13 Deflection roller 4 loaded. The axial bracing takes place via an adjusting shaft 14, which is rotatably mounted within the guide roller 4. By twisting the Actuating shaft 14 becomes the guide element 13 by means of the screw connection 12 clamped against the guide element 11 via a pressure disc 15. The expansion element 10 is pressed together. This way bulges the expansion element 10 in its center. This increases the diameter of the expansion element 10, so that its peripheral speed increased. The speed of rotation of the suction belt 2 is thus also enlarged accordingly. By reducing the pressure on the expansion element 10 reduces the speed of rotation of the suction belt 2 again corresponding. To simplify the entire system, it can be provided that that only a single adjustment mechanism or a pulley 4 with a Expansion element 10 is provided. The second guide roller 5 is then always with driven at the same speed depending on their drive. The Deflection rollers of the idler shaft on the opposite side of the Belt table 1 are preferably stored independently of one another so that the Differences in speed between the conveyor belts do not slip pass on the shaft and lead to increased wear.

In einer weitere Figur 3 ist ein Dehnelement 10 genauer dargestellt. Das Dehnelement 10 weist am Umfang eine Lauffläche 20 und seitliche, radial sich erstreckende Flanken 21 auf. Zur Verstellung werden die Flanken 21 in Richtung der Rotationsachse gegeneinander verspannt, um damit eine Durchmesservergrößerung der Lauffläche 20 bzw. eine Umfangsvergrößerung zu erreichen. Da ein metallisches Element zwar eine Elastizität aufweist, diese sich aber in stärkerem Maße auf eine Biegung, weniger aber auf eine Dehnung auswirken wird, sind hier für eine effiziente Wirkungsweise weiter Maßnahmen sinnvoll. Dazu ist das Dehnelement 10 mit Dehnfugen 22 versehen, die quer zur Lauffläche 20 verlaufen. Die Dehnfugen münden zur Vermeidung von Spannungsspitzen jeweils korrelierend in Öffnungen 23 in beiden Flanken des Dehnelementes 10. Die Öffnungen 23 sind vorzugsweise kreisförmig ausgeführt. Es sind aber auch andere, die Wirkung der Minderung von Spannungsspitzen erreichende Querschnittsformen für die Öffnungen 23 denkbar.In a further Figure 3, an expansion element 10 is shown in more detail. The Expansion element 10 has a tread 20 on the circumference and lateral, radial extending flanks 21. For adjustment, the flanks 21 are in the direction the axis of rotation braced against each other to create a Increase in diameter of the tread 20 or an increase in circumference to reach. Since a metallic element has an elasticity, it does but more to a bend, less to a stretch further measures are necessary for an efficient mode of operation meaningful. For this purpose, the expansion element 10 is provided with expansion joints 22 which are transverse to Tread 20 run. The expansion joints open to avoid Voltage peaks each correlating in openings 23 in both sides of the Expansion element 10. The openings 23 are preferably circular. But there are others, the effect of reducing voltage spikes Cross-sectional shapes reaching for the openings 23 are conceivable.

Im beschriebene Fall wird die Durchmesseränderung durch axiale Biegung erreicht. Durch den Druck auf die Flanken 21 biegen sich demzufolge die Laufflächenteile zwischen den Dehnfugen 22 nach außen und die Dehnfugen 22 öffnen sich in tangentialer Richtung der Lauffläche 20. Dadurch wird der Umfang der Lauffläche 20 vergrößert und die Umfangsgeschwindigkeit erhöht des zu führenden Saugbandes 2 erhöht. Eine Rückstellung hat die entsprechend gegenteilige Wirkung. Die Öffnung der Dehnfugen 22 hat keine nachteiligen Wirkungen auf die Führung des Saugbandes 2.In the case described, the change in diameter is caused by axial bending reached. Due to the pressure on the flanks 21, the bend accordingly Tread parts between the expansion joints 22 to the outside and the expansion joints 22 open in the tangential direction of the tread 20. This makes the circumference the tread 20 increases and the peripheral speed increases leading suction belt 2 increased. A provision has this accordingly opposite effect. The opening of the expansion joints 22 has no disadvantage Effects on the guidance of the suction belt 2.

Die Wirkung der Durchmesservergrößerung kann auch durch radial von innen auf die Laufflächen 20 wirkende Stellelemente erreicht werden. Die erforderliche, weitgehend kreiszylindrische Form der Dehnelemente 10 wird durch deren innere Struktur beibehalten.The effect of increasing the diameter can also be radially from the inside the treads 20 acting control elements can be reached. The required largely circular cylindrical shape of the expansion elements 10 is due to their inner Maintain structure.

Die Vorrichtung ist nicht nur zur Führung von Saugbändem 2 sondern von allen für den Bogentransport vorzusehenden Transportbändern geeignet.The device is not only for guiding suction belts 2 but by everyone Suitable for transport belts to be provided for sheet transport.

Claims (7)

  1. Device for the transport of sheets in sheet processing machines with a belt table, transport belts circulating around the belt table, transport rollers for guiding the transport belts on the belt table and devices for changing the diameter at least of one driven transport roller, characterised in that within a transport roller (4), an elastic extensible element (10) of metal is provided, which, in the region of an outer running surface (20) which serves directly or indirectly for the guidance of at least one transport belt, has a weakened area.
  2. Device according to Claim 1, characterised in that the extensible element (10) has the shape of a metal bellows U-shaped in cross-section.
  3. Device according to Claim 1, characterised in that the extensible element (10) is provided with two concentric endwise flanks (21) and an essentially cylindrical cover surface connecting the flanks (21) and forming a running surface (20), wherein, at least in the region of its running surface (20) parallel to its rotational axis, it is provided with extensible slots (22).
  4. Device according to Claim 1, characterised in that the extensible element (10) is provided with two concentric end face flanks (21) and an essentially cylindrical cover connecting the flanks (21) and forming a running surface (20), wherein the cover is constructed tapering in in cross-section from both flanks (21) towards the middle of the running surface (20) of the extensible element (10).
  5. Device according to Claim 3, characterised in that the extensible element (10) in the region of the endwise flanks (21) is provided with openings (23) and the extension slots (21) debouch into the preferably circular shaped openings (23).
  6. Device according to one of Claims 1 to 5, characterised in that the device for adjusting the diameter is constructed as an adjustment device acting axially from the inside or the outside on the flanks (21) of the extensible element (10).
  7. Device according to one of Claims 1 to 5, characterised in that the device for adjusting the diameter is constructed as an adjustment unit acting radially from the interior on the cover surface of the extensible element (10).
EP98123821A 1997-12-23 1998-12-15 Feed table with belts for sheets in underlapping formation Expired - Lifetime EP0926086B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29722737U 1997-12-23
DE29722737U DE29722737U1 (en) 1997-12-23 1997-12-23 Belt table for shingled sheets

Publications (3)

Publication Number Publication Date
EP0926086A2 EP0926086A2 (en) 1999-06-30
EP0926086A3 EP0926086A3 (en) 2000-05-24
EP0926086B1 true EP0926086B1 (en) 2002-05-15

Family

ID=8050415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98123821A Expired - Lifetime EP0926086B1 (en) 1997-12-23 1998-12-15 Feed table with belts for sheets in underlapping formation

Country Status (3)

Country Link
EP (1) EP0926086B1 (en)
AT (1) ATE217597T1 (en)
DE (2) DE29722737U1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009025588B4 (en) 2008-07-11 2022-02-24 Heidelberger Druckmaschinen Ag Device for feeding and aligning sheets that are fed to a processing machine, in particular a printing machine
ES2874303T3 (en) * 2016-07-19 2021-11-04 Bobst Mex Sa Guide roller and transport device comprising several rollers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4040830C2 (en) * 1990-12-20 1995-06-01 Roland Man Druckmasch Belt table for conveying in particular a shingled stream of sheets

Also Published As

Publication number Publication date
EP0926086A3 (en) 2000-05-24
EP0926086A2 (en) 1999-06-30
DE29722737U1 (en) 1998-02-12
DE59804127D1 (en) 2002-06-20
ATE217597T1 (en) 2002-06-15

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