EP1041027A2 - Dispositif pour transporter des signatures dans une machine d'imprimerie - Google Patents

Dispositif pour transporter des signatures dans une machine d'imprimerie Download PDF

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Publication number
EP1041027A2
EP1041027A2 EP00104588A EP00104588A EP1041027A2 EP 1041027 A2 EP1041027 A2 EP 1041027A2 EP 00104588 A EP00104588 A EP 00104588A EP 00104588 A EP00104588 A EP 00104588A EP 1041027 A2 EP1041027 A2 EP 1041027A2
Authority
EP
European Patent Office
Prior art keywords
toothed belt
toothed
pair
belts
belt pulleys
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
EP00104588A
Other languages
German (de)
English (en)
Other versions
EP1041027B1 (fr
EP1041027A3 (fr
Inventor
Barry Mark Jackson
David Elliot Whitten
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1041027A2 publication Critical patent/EP1041027A2/fr
Publication of EP1041027A3 publication Critical patent/EP1041027A3/fr
Application granted granted Critical
Publication of EP1041027B1 publication Critical patent/EP1041027B1/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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/68—Reducing the speed of articles as they advance
    • 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
    • B65H29/12—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers
    • 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
    • B65H2404/24—Longitudinal profile
    • B65H2404/242—Timing 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
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • B65H2701/1932—Signatures, folded printed matter, newspapers or parts thereof and books

Definitions

  • the present invention relates to a device for transporting signatures in printing presses according to the preamble of claim 1.
  • the present invention a device with which signatures after folding be slowed down, avoiding crushing or crumpling the signatures becomes.
  • signatures are printed on a printing press Folder fed to be folded one or more times. After folding is it is desirable to reduce the speed of the now folded signatures and / or increase while this is further processed to other components the press.
  • the prior art includes slowdown devices for signatures - so-called tail snubber "- known to grasp the rear end of a signature emerging from a folder to slow it down.
  • the devices form a gap in which a passing folded signature is gripped.
  • the gap which grips the signatures at their rear end, they have a linear speed which is lower than the transport speed of the respective signature, which slows down the signature .
  • the described devices have the problem that the folded signatures A folded signature is particularly compressed or crumpled when its rear end is moved by the slit of a slower one during its transport on a belt tail snubber "is gripped, so that parts of the folded signature move at different speeds.
  • the signatures' upsetting can lead to undesirable folds in the signatures, which can also cause a signature jam in the printing press.
  • the devices described require that that each time the signature format is changed, their position must be adapted to the respective signature length in order to be able to reliably grasp the rear end of the folded signatures with the new signature format.
  • the present invention relates to a device for transport and / or Slow down signatures in a printing press, which has the disadvantages of Prior art signature acceleration and deceleration mechanisms are overcome.
  • the device and method comprise a series of two or several flexible mechanical drives, e.g. B. belt drives or chain drives, each drive consisting of at least one pair arranged opposite one another Belt.
  • the belts are preferably toothed belts, which are associated with Toothed belt pulleys are driven.
  • the timing belt pulleys are partly with a non-circularly symmetrical surface, preferably a semi-elliptical Shaped outer surface.
  • the Timing belt pulleys preferably have a diameter ratio of 1: 1 these features are the belts or chains two directions of movement or Degrees of freedom given.
  • the first direction of movement of the belt or chain - the runs horizontally - moves the signatures forward and can also slow down of the signatures are used.
  • the second direction of movement of the belt or Chains which run vertically - pull the straps or chains from the signatures back so that they are no longer in contact with the signatures. Withdrawing
  • the belt from contact with the signatures prevents the signatures during a speed change or during a transition of the signatures be squeezed or wrinkled between ribbons.
  • One of the chain shafts or toothed belt pulley shafts can be arranged stationary, while the other chain or pulley shaft is movable or floating can be arranged so that the tension of the chains / belts can be regulated.
  • sprockets or Timing belt pulleys are used, which are made from conventional circular Sprockets or toothed belt pulleys are made with one side of the sprocket or the toothed belt pulley by grinding or other processing in one semi-elliptical shape.
  • the semi-elliptical shape ensures that during the movement of the chain or belt through a complete cycle Partial path of the trowel or belt remains constant; as a result, there is none Change in the tension of the trowel or belt there.
  • the concept of The device according to the present invention therefore does not require a mechanism for Compensate for voltage changes that cause unwanted vibrations can.
  • the toothed belt pulleys which drive the toothed belt, can in turn by a drive mechanism consisting of a driven belt with its own Voltage control can be driven.
  • Other drive mechanisms such as B. gears or motors can also be used to To drive toothed belt pulleys of the present invention.
  • the method of the present invention intermediates the supply of signatures belts arranged opposite one another, at least one of the belts retractable, d. H. is movable in two directions.
  • the signatures are from the Belt forward for one half of a turn of the timing belt pulley moves, the belts on the toothed belt pulleys in an elongated or the Signature contacting position.
  • the other half one Revolution of the toothed belt pulleys at least one of the belts is retracted and out of contact with the signature, so the signature of another couple each other Opposite straps can be contacted without the contact one end of the signature with the first pair of straps to crush or crumple of the signature.
  • the device of the present invention can be designed such that the Speed at which the belts move the signatures forward is optimal and that the amount by which the belt retracts or is spaced from the Signatures takes, is also optimal. These parameters depend on the size and Shape of the toothed belt pulleys determined. The speed of the forward movement, with which the signatures are moved depends on the pitch circle diameter the toothed belt pulley or the sprocket; and the amount by which the The belt pulls back from the signatures depends on the semi-elliptical profile of the Timing belt pulleys / sprockets.
  • the toothed belt pulleys driving a specific belt are preferably in arranged so that they are always in phase with each other, d. H. that the toothed side of a toothed belt pulley always in the same direction as the toothed one Side of every other toothed belt pulley is directed for this belt. In this way the tension in the belt is maintained since the same number of Timing Pulley Teeth - over half the circumference of a timing pulley away - during the complete rotation of the toothed belt pulleys with the Belt is engaged. This ensures an inevitable drive of the belts and thus an inevitable drive of the signatures during the rotation of the Timing belt pulleys without any change in the surface speed of the Belt.
  • the main axis of the semi-elliptical surface of the toothed belt pulleys is - from Tooth root of the toothed belt pulley teeth measured - preferably equal to that Diameter of the respective toothed belt pulley.
  • the minor axis of the semi-elliptical Surface is preferably chosen such that the arc length of the semi-elliptical Surface equal to the length of an integer number of teeth of the Timing belt is.
  • the arcuate length can advantageously be such be varied so that they have any number of teeth on the timing belt corresponds to the desired amount of vertical lifting or To get displacement of the timing belt, for a particular arrangement or for certain operating conditions is desired.
  • the surface can also have a different curve shape.
  • the two are mutually exclusive opposing straps retractable straps.
  • a belt a stationary transport belt during the Opposed straps are retractable straps.
  • the device can consist of a series of sequentially arranged straps or pairs of straps, which revolve at different speeds, resulting in acceleration or there is a slowdown in the signatures as this goes from pair of straps to Move the pair of belts.
  • Belt pairs instead of a series of sequentially arranged ones Belt pairs the slower set of belts within the faster set of Straps may be arranged.
  • the top and lower straps offset relative to each other to form an S-shaped To generate curvature along a signature and thereby different thicknesses of the to compensate for folded signature.
  • a flexible mechanical element preferably in the form of a toothed belt 1
  • a semicircular side 4 of each toothed belt pulley 2, 3 has teeth 5 which engage in the teeth of the toothed belt 1.
  • the other side 7 of each toothed belt pulley 2, 3 has a semi-elliptical surface 8.
  • the side 4 of the toothed belt pulleys drives the toothed belt 1 in such a way that the latter moves relative to a center C of the toothed belt pulleys 2, 3 with a radius r 1 by 180 ° of the circumference of the toothed belt pulley.
  • the semi-elliptical side 7 of the toothed belt pulleys has a major axis M with a radius that is equal to the radius of the side 4 of the toothed belt pulleys - if measured from the tooth base of the teeth of the toothed belt - and a minor axis m with a radius that is smaller than the radius of the Major axis M is.
  • the semi-elliptical side 7 drives the toothed belt 1 in such a way that it rotates by 180 ° relative to a center C of the toothed belt pulleys 2, 3 between a radius r 1 and a radius r 2 that is smaller than the radius r 1 of the circumference of the toothed belt pulley along the radius r 1 .
  • the toothed belt 1 is retracted relative to its position in the radius r 1 .
  • the toothed belt pulleys 2, 3 formed by on one side of a conventional toothed belt pulley (timing sprocket) with a uniform radius, the teeth 5 ground or otherwise removed become. Then this side is further sanded or processed, so that a semi-elliptical Side with a major axis M and a minor axis m arises, their radius is smaller than the radius of the main axis M.
  • Fig. 3c shows the area A in hatched Representation that is ground from a conventional toothed belt pulley or was otherwise processed to the toothed belt pulleys 2, 3 of the present Shaping Invention.
  • the main axis M is equal to the diameter of the Timing belt pulleys 2, 3 - if from the tooth base of the timing belt pulley teeth measured -.
  • the radius of the minor axis m is calculated to make the correct movement and tension of the timing belt 1 to create.
  • the minor axis m must have a be chosen such that the arcuate length of the surface 8 is the same is the length of the toothed belt 1, which corresponds to an integer number of teeth 6.
  • the toothed belt pulleys 2, 3 are preferably each mounted on rockers 9 which through the center C of the toothed belt pulleys 2, 3 into a designated one Inserted opening and can be fixed therein.
  • the embodiment of the invention is one of the rockers 9 in a fixed bearing 20 rotatably mounted, while the other rocker 9 is mounted in a bearing 21, the is movable or floating (e.g. a bearing that slides in a slot 22 and can then be locked in).
  • the toothed belt pulleys 2, 3 can also each have a bearing bush 11.
  • On Drive belt 12 (Fig. 1a and 1b) can both around the bearing bushes 11 Toothed belt pulleys 2, 3 and also around a tension roller 13 are attached.
  • Any suitable drive mechanism such as a drive motor, can be used for the Drive of the drive belt 12 can be used.
  • the Drive belt 12 are dispensed with and another suitable one can be used instead Drive mechanism, such as a gearbox or motor, can be used to to drive the toothed belt pulleys 2, 3 in the R direction.
  • the bearing bushes 11 also preferably have a diameter ratio of 1: 1, so that the drive belt 12 drives the toothed belt pulleys 2, 3 with an identical rotational speed.
  • the toothed belt pulleys 2, 3 are preferably received in bearings 20, 21 and aligned with one another in such a way that they are in phase with one another, that is to say that the main axes M of both toothed belt pulleys 2, 3, as shown in FIG. 1d, are aligned parallel to one another are and the respective sides 4 of the toothed belt pulleys 2, 3 point in the same direction.
  • Fig. 2 shows a first embodiment of the device according to the invention, in which a series of first, oppositely arranged toothed belts 1 and second, oppositely arranged belts 1 'can be used to a Slow down signature S and / or move forward without being compressed or even crumpled.
  • the signatures S are used for this purpose
  • Printing press component e.g. B. from a folder, in a direction F between a first pair of belts 1 consisting of an upper and a lower toothed belt fed.
  • These first toothed belts 1 arranged opposite one another are around Toothed belt pulleys 2, 3 passed around.
  • Fig. B Printing press component
  • the second pair of timing belts 1 ' is in one withdrawn or contactless position when the first pair of timing belts 1 in a signature or contact position.
  • This condition is achieved by the second toothed belt pulleys 2 ', 3' are 180 ° out of phase with the first Toothed belt pulleys 2, 3 are moved.
  • the first toothed belt pulleys 2, 3 and the second toothed belt pulleys 2 ', 3' are driven at the same rotational speed.
  • the second, opposite one another Toothed belt 1 ' hereinafter also called second pair of toothed belts 1', over smaller ones second toothed belt drive 2 ', 3' driven, or run over the second smaller Toothed belt pulleys 2 ', 3', (compared to the toothed belt pulleys of the first Pair of timing belts 1).
  • the second pair of toothed belts 1 ' transports the signature S with a lower linear one Speed.
  • the system slows down or brakes accordingly Fig. 2, the signatures S, while this in the direction designated F forward be moved.
  • FIG. 4 shows a further embodiment of the invention, in which only one toothed belt 1, 1 'of the first and second pair of toothed belts is a retracting belt.
  • the other belts 101, 101 ' is conventional in this embodiment Toothed belt which is replaced by a conventional toothed belt pulley 102, 103 or 102 ', 103' is driven.
  • this arrangement ensures how also the arrangement of Fig. 2 that when the belt 1, 1 'in the contact position are located, the signature S between the toothed belt 1, 101, or 1 ', 101' and is moved forward.
  • the arrangement also ensures that when the Belts 1, 1 'are in the retracted position, a signature S between the Timing belt pairs 1, 101 and 1 ', 101' can be moved forward without one Force acts on the signature S, which leads to compression or crumpling can.
  • FIG. 5 shows a further alternative embodiment of the present invention, at which is a slower second pair of toothed belts 1 'within a faster first Toothed belt pair 1 is located.
  • the first pair of toothed belts 1 is 180 ° out of phase with the second Toothed belt pair 1 'driven, in such a way that the first pair of toothed belts 1 the Signature S takes hold when the second pair of toothed belts 1 'retracted in its Position, and vice versa.
  • Fig. 6 shows a further alternative embodiment of the invention, in which the Toothed belt 1, 1 'guided over a series of four toothed belt pulleys 2, 3, or 2', 3 ' are.
  • the first ones are located Timing belt pulleys 2, 3 in phase with each other and simultaneously through 180 ° out of phase with the second toothed belt pulleys 2 ', 3'.
  • FIGS. 2 and 6 are the embodiments of FIGS. 2 and 6 in terms of structure and function essentially equal to each other.
  • FIG. 1 shows a further alternative embodiment of the invention, in which the Toothed belt 1, 1 'guided over a series of four toothed belt pulleys 2, 3, or 2', 3 ' are.
  • the first ones are located Timing belt pulleys 2, 3 in phase with each other and simultaneously through 180 ° out of phase with the second toothed belt pulleys 2 ', 3'.
  • FIGS. 2 and 6 are the embodiments of FIGS. 2 and 6 in terms
  • the lower toothed belt 1, 1 'in the same way by semi-elliptical toothed belt pulleys are driven, such as the upper toothed belt 1, 1 '; or the lower straps 1, 1 ' can by normal circular toothed belt pulleys, such as in the lower half of Fig. 4 are driven.
  • FIG. 7 shows a further alternative embodiment of the invention Device shown, in which the upper and lower timing belts 1, 1 'in the direction F are laterally offset from each other.
  • the present invention is particularly suitable for additional signatures S.
  • deflection paths that are away from or to the side of path F extend.
  • Such paths can be by any suitable deflection or Gripping mechanism or created by additional drives for retraction belts the direction of the signature S is changed when the timing belt 1 or 1 'are in a withdrawn or contactless position. So can move the signature S freely in any direction in which it is deflected.
  • FIGS. 8-12 show an arrangement in which the drive mechanism according to the present invention can be used for the intermittent forward movement of a driven sprocket 33.
  • a chain 31 (or alternatively a toothed belt with teeth on both sides) is driven by chain wheels 32, which are identical to the chain wheels 2, 3 of FIG. 1.
  • the chain 31 contacts the driven sprocket 33 intermittently, so that a rotating movement of the driven sprocket 33 takes place in an intermittent manner.
  • the arrangement shown in Figs. 8-12 thus functions as an intermittent drive mechanism for a shaft connected to the driven sprocket 33, in the same manner as a so-called Geneva drive mechanism which drives a shaft in an intermittent manner.
  • the driven sprocket 33 is driven during half a revolution of each complete revolution of the sprockets 32.
  • the amount by which the driven sprocket 33 is driven with each revolution of the sprockets 32 is determined by the diameter ratio between the driven sprocket 33 and the sprockets 32.
  • the sprocket 33 can be driven to any desired intermittent motion.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Advancing Webs (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP00104588A 1999-03-31 2000-03-14 Dispositif pour transporter des signatures dans une machine d'imprimerie Expired - Lifetime EP1041027B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/282,870 US6405850B1 (en) 1999-03-31 1999-03-31 Apparatus and method for advancing signatures using a retracting drive
US282870 1999-03-31

Publications (3)

Publication Number Publication Date
EP1041027A2 true EP1041027A2 (fr) 2000-10-04
EP1041027A3 EP1041027A3 (fr) 2002-10-16
EP1041027B1 EP1041027B1 (fr) 2003-11-05

Family

ID=23083483

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00104588A Expired - Lifetime EP1041027B1 (fr) 1999-03-31 2000-03-14 Dispositif pour transporter des signatures dans une machine d'imprimerie

Country Status (4)

Country Link
US (2) US6405850B1 (fr)
EP (1) EP1041027B1 (fr)
JP (1) JP4584401B2 (fr)
DE (2) DE50004289D1 (fr)

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Also Published As

Publication number Publication date
US6405850B1 (en) 2002-06-18
JP2000309460A (ja) 2000-11-07
EP1041027B1 (fr) 2003-11-05
DE50004289D1 (de) 2003-12-11
US20020079197A1 (en) 2002-06-27
US6719123B2 (en) 2004-04-13
DE10012255A1 (de) 2000-10-05
JP4584401B2 (ja) 2010-11-24
EP1041027A3 (fr) 2002-10-16

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