EP2218667A2 - Sheet feeder for loading a transport device with folded printed sheets and method for operating such a sheet feeder - Google Patents
Sheet feeder for loading a transport device with folded printed sheets and method for operating such a sheet feeder Download PDFInfo
- Publication number
- EP2218667A2 EP2218667A2 EP10162547A EP10162547A EP2218667A2 EP 2218667 A2 EP2218667 A2 EP 2218667A2 EP 10162547 A EP10162547 A EP 10162547A EP 10162547 A EP10162547 A EP 10162547A EP 2218667 A2 EP2218667 A2 EP 2218667A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- stop
- gripper
- sheet feeder
- speed
- 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.)
- Ceased
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Classifications
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- 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
- B65H5/30—Opening devices for folded sheets or signatures
- B65H5/305—Opening devices for folded sheets or signatures comprising rotary means for opening the folded sheets
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- 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
- B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
- B65H5/12—Revolving grippers, e.g. mounted on arms, frames or cylinders
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/44—Moving, forwarding, guiding material
- B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
- B65H2301/4471—Grippers, e.g. moved in paths enclosing an area
- B65H2301/44714—Grippers, e.g. moved in paths enclosing an area carried by rotating members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/44—Moving, forwarding, guiding material
- B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
- B65H2301/4474—Pair of cooperating moving elements as rollers, belts forming nip into which material is transported
Definitions
- the invention relates to a sheet feeder for loading a conveyor with folded signature, with a gripper drum having at least one gripper for removing a respective sheet from a stack, with a stop device which is arranged on the circumference of the gripper drum and which has a stop on which Each sheet can be aligned with the fold advancing, and with an opening device with which the respectively aligned to the stop device sheet open and can be stored under direction reversal on the transport device. It also relates to a method of operating such a sheet feeder.
- Sheet feeders of this type are, for example, in saddle stitchers known for a long time. With such a sheet feeder, folded sheets are withdrawn individually from the pile with the gripper drum, opened and, for example, deposited on a collecting chain. At such sheet feeder the requirement is made that even with different formats and different paper trouble-free storage of the sheet is guaranteed.
- DE-A-30 35 497 is a sheet feeder of the type mentioned become known in which the stop is designed to be movable. The stop takes over the sheets each synchronized motion and slow them down. This is to avoid that the striking at high speed on the stop compressed sheet are compressed.
- the DE-A-197 38 920 discloses a sheet feeder in which upstream of the stop a strip is arranged which forms a wedge-shaped inlet opening for the printed sheets. By a friction engagement of the sheet with the tape to stabilize the sheet to be achieved when hitting the stop.
- the invention has for its object to provide a sheet feeder of the type mentioned, which allows even higher performance and still ensures safe storage of the sheet.
- the object is achieved in a generic sheet feeder in that upstream of the stop pressure means are arranged, which press the released from the gripper sheet each to a decelerating member having a transport speed, but the rectified is substantially smaller than that of the gripper drum, such that the Printing sheet upstream of the stop are each slowed down substantially to the transport speed of the delay element and impinge on the stop at this reduced speed.
- the speed of the printed sheet prior to the stop is thus reduced stepwise by the transfer to a retarding member at a substantially lower speed.
- the printed sheets can be slowed down, for example, to half the peripheral speed of the gripper drum. When hitting the sheet on the Stop this sheet then only half the speed and can be kept correspondingly safer under control.
- thin printed sheets can be processed with high performance, without being significantly compressed at the stop. Thick and heavy printed sheets, which have a correspondingly high kinetic energy, can be better controlled.
- the delay element has at least one endless belt.
- This endless belt is thus arranged at least in the region of the stop device and driven at a speed which is substantially smaller than the transport speed of said gripper.
- the delay element has at least one ring which is mounted on the circumference of the gripper drum.
- the ring has an outer surface on which the printed sheets are pressed in each case before reaching the stop. A particularly safe and stable deceleration of the printed sheet is guaranteed if two such rings are provided, each having an outer surface.
- the outer surfaces have a radius that is equal to or less than the radius on which the grippers transport printed sheets to the stop device.
- the pressure means are arranged on the stop device. This allows a simple yet stable support of these pressure medium. At the same time, the pressure means stabilize the printed sheets in the area of the stop device.
- the pressure means have at least one pressure roller, which bears against an outer side of the delay element.
- This pressure roller presses the printed sheets in each case shortly before the stop on the outside of the retarder and thereby significantly reduces the transport speed of the sheet.
- two spaced pressure rollers are provided. This allows a wide and secure support and stabilization of the sheets when they hit the stop.
- the pressure means are arranged according to an embodiment of the invention on one arm of the stop device and pressed under tension on the delay element.
- this voltage is adjustable. This allows a safe braking of the printed sheets to the lower transport speed.
- the delay element is driven by the gripper drum.
- This can be realized in a structurally particularly simple manner when the drive takes place with a friction wheel, which is moved along with the gripper drum at a distance from the axis of rotation.
- the friction wheel is driven here, for example, via a toothed belt which is in engagement with a stationary toothed belt wheel.
- the printed sheets are preferably gripped simultaneously by two grippers, which are each arranged directly next to said outer surfaces of the rings.
- the distance between said outer surfaces is thus equal to or insignificantly smaller than the distance of the pairs arranged gripper.
- a deceleration of the printed sheets to a particularly low transport speed is possible if, according to a development of the invention, the delay element has two or more than two elements which have different transport speeds.
- the printed sheets can then be braked over two or more stages to a particularly low speed.
- the impact speed of the sheet on the stop and thus the risk of damage to the sheet can be further reduced.
- the sheet feeder is particularly suitable as a feeder for a gathering chain, but it can also be loaded with other transport devices such a sheet feeder.
- the sheet feeder 1 has according FIG. 1 a housing 5, which has spaced-apart side plates 5a, of which in FIG. 1 only one is shown.
- a so-called A-shaft 2 is mounted, which is driven by a drive device, not shown here about an axis of rotation 11 in the direction of the arrow 9 and thus in a clockwise direction.
- the A-wave 2 are each of a sheet stack 8, which may also be arranged in the housing 5, a folded sheet 7 withdrawn and transported with a fold 7 a ahead in the direction of arrow 9 to a stop device 32.
- the stop device 32 is adjusted to the format of a printing sheet 7 and forms with a stop element 10 a stop for the occasional folded printed sheet 7.
- the voltage applied to the fold 7a on the stop element 10 printed sheet 7 are of a B-wave 3 and a C-wave 4th taken and opened in a conventional manner and stored on a transport device, eg. A collection chain 15.
- a transport device eg. A collection chain 15.
- the saddle-shaped lying printed sheet 7 are transported parallel to the axis of rotation 11 and added for further processing further device not shown here.
- the B-shaft 3 and the C-shaft 4 may be formed in a known manner and will therefore not be explained further here.
- These waves can also be replaced by another suitable device with which the printed sheets 7 can be opened and stored on a transport device.
- the gripper drum 13 has according FIG. 2 two spaced-apart wheels 13 a and 13 b, which are fixedly connected to a shaft 19. This shaft 19 is mounted on the housing 5 and is driven by a toothed belt wheel 37. At each of the two wheels 13a and 13b are located at the same distance on the circumference of three grippers 6, each having a gripper arm 6a and a gripper pad 6b.
- the grippers 6 are arranged in pairs, for example on the outside, ie they have a greater distance in the direction of the axis of rotation 11 than the two wheels 13a and 13b. It is also conceivable that the grippers 6 are arranged by at least one of the wheels 13a and 13b between the wheels 13a and 13b.
- the gripper arms 6a are each attached to a control shaft 31 which is connected to arranged in a housing 33 control cams, and can be pivoted with this for gripping a respective printed sheet 7 in a known manner.
- FIG. 4 shows above two open gripper 6, while the remaining grippers 6 are closed.
- the closed state is according to FIG. 1 between each two gripper arms 6 and two gripper pads 6b a sheet 7 held in the region of the fold 7a.
- the gripper drum 13 can also be designed so that it is designed only for the transport of a printed sheet 7 or for more than three sheets 7 per revolution.
- the grippers 6 shown here are merely preferred embodiments for gripping means.
- a ring 14 is mounted in each case, which is driven by a drive 34.
- the two rings 14 are driven so that their peripheral speed is substantially smaller than that of the gripper drum 13.
- the peripheral speed of the two rings 14 is, for example, half as high as the peripheral speed of the gripper drum 13.
- the outer diameter of the rings 14, as in Fig. 3 shown selected so that it is equal to or smaller than the diameter on which the grippers 6 holding the printing sheet 7 rotate about the axis of rotation 11.
- the drive 34 has a toothed belt wheel 18 which is mounted on the shaft 19 and which is connected to a holder 38 fixed to the housing 5.
- the toothed belt wheel 18 is thus stationary with respect to the housing 5.
- a further toothed belt wheel 21 is arranged, which is rotationally fixedly connected to a shaft 16 which is fixed in parallel and at a distance from the shaft 19 with a holder 17 on the gripper drum 13.
- a toothed belt 20 is placed, which is tensioned with a belt tensioner 22. Rotates the gripper drum 13 on the A-shaft 19 about the axis 11, the shaft 16 moves similar to a planet in a circular orbit about the axis 11.
- the shaft 16 By the engagement of the toothed belt 20, the shaft 16 is simultaneously rotated about its axis.
- two friction wheels 24 are mounted on the shaft 16 at a distance from each other, which according to the FIG. 2 each pressed against an inner surface 25 of the rings 14.
- the transmission ratios of the toothed belt wheels 18 and 21 and the diameter of the friction wheels 24 and the inner diameter of the inner surface 25 of the rings 14 can be influenced.
- the gear ratios are selected so that the peripheral speed of the two wheels 14 is about 20 to 40% of the peripheral speed of the gripper drum 13.
- the frictional transmission of the rotational movement of the wheels 24 on the rings 14 is by another transmission, for example.
- toothing conceivable.
- the rings 14 are driven separately, for example with a suitable motor.
- the gripper drum 13 transports the printed sheet 7 withdrawn from the stack 8 in each case with preferably constant transport speed v 1 to the stop device 32. Shortly before each fold 7a (FIG. FIG. 1 ) of the printing sheet 7 impinges on the stop element 10, the corresponding two grippers 6 release the sheet 7. Substantially simultaneously with the opening of the corresponding gripper 6, the sheet 7, as in FIG FIG. 2 shown with two pressure rollers 12 to each one Outer surface 30 of the two rings 14 pressed. The printed sheet 7 is braked by appropriate friction on the outer surfaces 30 to the peripheral speed v 2 of the two rings 14 and thereby loses kinetic energy.
- the pressing force of the two pressure rollers 12 can by a setting device 35 (FIG. FIG.
- the contact pressure can be changed, for example, by means of a piston, which is acted upon by adjustable compressed air. Also conceivable is an embodiment in which the desired contact pressure is generated via a spring. By adjusting the contact pressure, the friction between the sheet 7 and the outer surfaces 30 and thus the negative acceleration of the sheet 7 can be adjusted.
- the sheet 7 is then transported further with a corresponding reduced speed until the fold 7a rests against the stop element 10 and the printed sheet 7 is aligned accordingly.
- the stop element 10 is preferably made of a damping material, which largely prevents a jumping back of the printed products.
- the folds 7a parallel to the free edges of the sheet 7, are now detected by the A-wave 2 and the B-wave 3 and the sheet 7 is opened so that it according to FIG. 1 can be stored on the gathering chain 15.
- the printed sheet 7 is thereby pulled out of the stop device 32 under direction reversal.
- the sheet 7 Before the printing sheet 7 is caught and opened by the A-shaft 2 and the B-shaft 3, the sheet 7 remains aligned on the stop element and remains aligned by the frictional force on the two rings 14 and the stop element 10. When pulling out the sheet 7 from the stopper 32, this frictional force is overcome.
- the two rings 14 form with the pressure rollers 12, a delay member 36, which transport the sheets 7 in the same direction as the gripper 6, but at a substantially reduced speed.
- the FIG. 6 shows a sheet feeder 1 ', which is basically formed as the sheet feeder 1, but which differs by a delay member 36' according to a variant.
- an endless belt 26 is provided, which is guided over deflection rollers 27 and driven by a drive roller 28. With a tension roller 29, the band 26 is stretched.
- the band 26 is arcuately guided in the region of the deflection rollers 27 and extends upstream and downstream of the stop element 10.
- the band 26 is preferably driven at a constant speed v 2 .
- the speed v 2 corresponds to the speed of the delay member 36.
- this speed v 2 is not mandatory, but can also be controlled variable.
- the speed v 2 could be controlled so that it is reduced during the transport of the printing sheet 7 to the stop element 10, so that the speed of the printing sheet 7 is further reduced when hitting the stop element 10.
- the in the FIG. 6 not shown gripper drum 13 transports a withdrawn from the stack 8 sheet 7 as described above.
- the gripper 6 which has hitherto transported the printed sheet 7, is opened and thus the printed sheet 7 is transferred to the belt 26 for transport.
- the lower transport speed of the belt 26 reduces the transport speed of the printing sheet 7. Even with the sheet feeder 1 'is a delay over several stages possible. Accordingly, then several bands 26 and pressure rollers 12 would be provided.
- the detection of the printed sheet 7 with the B-wave 3 and the C-shaft 4 and the depositing on the gathering chain 15 and the transport device takes place as explained above.
- pressure roller 12 may also be another suitable pressure element, for example. Also be provided an endless belt. Also possible is a design with two mutually spaced bands 26 and correspondingly two pressure rollers 12. The sheets 7 are then detected according to two bands 26 and two pressure rollers 12 and transported to the stop element 10.
- FIG. 5 is a first angular position 01 , in which the gripper 6 engaging the signature 7 opens.
- the corresponding printed sheet 7 is pressed against the rings 14 substantially simultaneously with the opening of the gripper 6 and thus the transport speed of the printing sheet 7 is delayed from the speed v 1 to the speed v 2 .
- peripheral speed v 1 of the corresponding sheet 7 is delayed up to a second angular position ⁇ 2 to the peripheral speed or transport speed v 2 .
- the printed sheet 7 now hits the stop element 10 with the fold 7a and is decelerated by it to the peripheral speed v 0 and thus to the zero speed.
- the curve K3 shows a speed course of a sheet 7, which is transported with a delay member 36 or 36 ', in which the transport speed is controlled variably by a cam control or a motor.
- the velocity of the retarding member 36 or 36 ' is reduced from the angular position ⁇ 1 to the angular position ⁇ 2 with the mentioned control or the motor. This makes it possible to further reduce the impact velocity of the printed sheets 7 on the stop element 10.
- the corresponding impact velocity is still significantly smaller than the velocity v 2 . As already mentioned above, such a delay is also possible over several stages.
- FIG. 7 shows the curve K1 the speed curve in a sheet feeder according to the prior art, in which the printed sheets 7 impinge on the stop member 10 at the angular position ⁇ 3 without delay.
- the printed sheets 7 are thus abruptly decelerated at the speed v 1 of the gripper drum 13 on the stop element 10 to a standstill or up to the peripheral speed v 0 .
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
- Discharge By Other Means (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Abstract
Description
Die Erfindung betrifft einen Bogenanleger zum Beschicken einer Transportvorrichtung mit gefalzten Druckbogen, mit einer Greifertrommel, die wenigstens einen Greifer zum Entnehmen jeweils eines Druckbogens von einem Stapel aufweist, mit einer Anschlagvorrichtung, die am Umfang der Greifertrommel angeordnet ist und welche einen Anschlag aufweist, an welchem Druckbogen jeweils mit dem Falz voran ausrichtbar sind, und mit einer Öffnungsvorrichtung, mit der die jeweils an den Anschlagvorrichtung ausgerichteten Druckbogen geöffnet und unter Richtungsumkehr auf die Transportvorrichtung ablegbar sind. Sie betrifft auch ein Verfahren zum Betrieb eines solchen Bogenanlegers.The invention relates to a sheet feeder for loading a conveyor with folded signature, with a gripper drum having at least one gripper for removing a respective sheet from a stack, with a stop device which is arranged on the circumference of the gripper drum and which has a stop on which Each sheet can be aligned with the fold advancing, and with an opening device with which the respectively aligned to the stop device sheet open and can be stored under direction reversal on the transport device. It also relates to a method of operating such a sheet feeder.
Bogenanleger dieser Art sind bspw. bei Sammelheftern seit langem bekannt. Mit einem solchen Bogenanleger werden mit der Greifertrommel von einem Stapel gefalzte Bogen einzeln abgezogen, geöffnet und bspw. auf eine Sammelkette abgelegt. An solche Bogenanleger wird die Forderung gestellt, dass auch bei unterschiedlichen Formaten und unterschiedlichem Papier ein störungsfreies Ablegen der Druckbogen gewährleistet ist.Sheet feeders of this type are, for example, in saddle stitchers known for a long time. With such a sheet feeder, folded sheets are withdrawn individually from the pile with the gripper drum, opened and, for example, deposited on a collecting chain. At such sheet feeder the requirement is made that even with different formats and different paper trouble-free storage of the sheet is guaranteed.
Ein wesentlicher Parameter, welcher die Produktionsgeschwindigkeit begrenzt, ist die Auftreffgeschwindigkeit der Bogen am Anschlag. Bei diesem Auftreffen kommt es vor allem bei dünnen Bogen zu einem Stauchen und Ausbeulen der Druckbogen oder diese können vom Anschlag zurückspringen. Dadurch kann es zu Störungen beim Öffnen des Druckbogens durch die Öffnungstrommeln kommen. Dieses Problem ist seit langem bekannt und es gibt bereits mehrere Vorschläge um dieses zu lösen.An important parameter that limits the production speed is the impact velocity of the sheet at the stop. In the case of this impact, especially with thin sheets, compression and buckling of the printed sheets occur or they can spring back from the stop. This can cause interference when opening the sheet through the opening drums. This problem has long been known and there are already several proposals to solve this.
Durch die
Die
Durch die
Vor allem bei schweren Druckbogen wird es auch mit den oben genannten Vorschlägen bei hohen Geschwindigkeiten schwierig, die kinetische Energie beim Auftreffen der Druckbogen auf die Anschläge ausreichend so abzubauen, dass keine übermassigen, den weiteren Verlauf des Prozesses störende Verformungen auftreten.Especially with heavy press sheets, it becomes difficult even with the above proposals at high speeds, the kinetic energy sufficient to hit the bends so that no excessive, the further course of the process disturbing deformations occur.
Der Erfindung liegt die Aufgabe zugrunde, einen Bogenanleger der genannten Art zu schaffen, der noch höhere Leistungen ermöglicht und der trotzdem ein sicheres Ablegen der Druckbogen gewährleistet.The invention has for its object to provide a sheet feeder of the type mentioned, which allows even higher performance and still ensures safe storage of the sheet.
Die Aufgabe ist bei einem gattungsgemässen Bogenanleger dadurch gelöst, dass stromaufwärts des Anschlages Druckmittel angeordnet sind, welche die vom Greifer freigegebenen Druckbogen jeweils an ein Verzögerungsorgan anpressen, das eine Transportgeschwindigkeit aufweist, die gleichgerichtet aber wesentlich kleiner ist als diejenige der Greifertrommel, derart, dass die Druckbogen stromaufwärts des Anschlages jeweils im Wesentlichen auf die Transportgeschwindigkeit des Verzögerungsorgan abgebremst werden und mit dieser verminderten Geschwindigkeit auf den Anschlag auftreffen. Beim erfindungsgemässen Bogenanleger wird somit die Geschwindigkeit der Druckbogen vor dem Anschlag stufenweise durch die Übergabe an ein Verzögerungsorgan mit einer wesentlich geringeren Geschwindigkeit vermindert. Die Druckbogen können dadurch bspw. auf die halbe Umfangsgeschwindigkeit der Greifertrommel abgebremst werden. Beim Auftreffen der Druckbogen auf den Anschlag haben diese Druckbogen dann lediglich noch die halbe Geschwindigkeit und können entsprechend sicherer unter Kontrolle gehalten werden. Damit können insbesondere auch dünne Druckbogen mit hoher Leistung verarbeitet werden, ohne dass sie am Anschlag wesentlich gestaucht werden. Dicke und schwere Druckbogen, die eine entsprechend hohe kinetische Energie besitzen, lassen sich besser kontrollieren.The object is achieved in a generic sheet feeder in that upstream of the stop pressure means are arranged, which press the released from the gripper sheet each to a decelerating member having a transport speed, but the rectified is substantially smaller than that of the gripper drum, such that the Printing sheet upstream of the stop are each slowed down substantially to the transport speed of the delay element and impinge on the stop at this reduced speed. In the case of the sheet feeder according to the invention, the speed of the printed sheet prior to the stop is thus reduced stepwise by the transfer to a retarding member at a substantially lower speed. The printed sheets can be slowed down, for example, to half the peripheral speed of the gripper drum. When hitting the sheet on the Stop this sheet then only half the speed and can be kept correspondingly safer under control. Thus, in particular, thin printed sheets can be processed with high performance, without being significantly compressed at the stop. Thick and heavy printed sheets, which have a correspondingly high kinetic energy, can be better controlled.
Bei der Erfindung besitzt das Verzögerungsorgan wenigstens ein endloses Band. Dieses endlose Band ist somit zumindest im Bereich der Anschlagvorrichtung angeordnet und mit einer Geschwindigkeit angetrieben, die wesentlich kleiner ist als die Transportgeschwindigkeit des genannten Greifers.In the invention, the delay element has at least one endless belt. This endless belt is thus arranged at least in the region of the stop device and driven at a speed which is substantially smaller than the transport speed of said gripper.
Bei der Erfindung weist das Verzögerungsorgan wenigstens einen Ring auf, der am Umfang der Greifertrommel gelagert ist. Der Ring besitzt eine Aussenfläche, an der die Druckbogen jeweils vor Erreichen des Anschlags angepresst werden. Ein besonders sicheres und stabiles Abbremsen der Druckbogen ist dann gewährleistet, wenn zwei solche Ringe vorgesehen sind, die jeweils eine Aussenfläche besitzen. Die Aussenflächen weisen einen Radius auf, der gleichgross oder wenig kleiner ist wie der Radius, auf dem die Greifer Druckbogen zur Anschlagvorrichtung transportieren.In the invention, the delay element has at least one ring which is mounted on the circumference of the gripper drum. The ring has an outer surface on which the printed sheets are pressed in each case before reaching the stop. A particularly safe and stable deceleration of the printed sheet is guaranteed if two such rings are provided, each having an outer surface. The outer surfaces have a radius that is equal to or less than the radius on which the grippers transport printed sheets to the stop device.
Nach einer Weiterbildung der Erfindung ist vorgesehen, dass die Druckmittel an der Anschlagvorrichtung angeordnet sind. Dies ermöglicht eine einfache und dennoch stabile Abstützung dieser Druckmittel. Die Druckmittel stabilisieren gleichzeitig die Druckbogen im Bereich der Anschlagvorrichtung.According to a development of the invention it is provided that the pressure means are arranged on the stop device. This allows a simple yet stable support of these pressure medium. At the same time, the pressure means stabilize the printed sheets in the area of the stop device.
Vorzugsweise weisen die Druckmittel wenigstens eine Druckrolle auf, die an einer Aussenseite des Verzögerungsorgans anliegt. Diese Druckrolle presst die Druckbogen jeweils kurz vor dem Anschlag an die Aussenseite des Verzögerungsorgans und vermindert dadurch die Transportgeschwindigkeit des Druckbogens wesentlich. Vorzugsweise sind zwei im Abstand zueinander angeordnete Druckrollen vorgesehen. Dies ermöglicht eine weite und sichere Abstützung und Stabilisierung der Druckbogen, wenn diese auf den Anschlag auftreffen.Preferably, the pressure means have at least one pressure roller, which bears against an outer side of the delay element. This pressure roller presses the printed sheets in each case shortly before the stop on the outside of the retarder and thereby significantly reduces the transport speed of the sheet. Preferably, two spaced pressure rollers are provided. This allows a wide and secure support and stabilization of the sheets when they hit the stop.
Die Druckmittel sind gemäss einer Weiterbildung der Erfindung an einem Arm der Anschlagvorrichtung angeordnet und unter Spannung am Verzögerungsorgan angepresst. Vorzugsweise ist diese Spannung einstellbar. Dies ermöglicht ein sicheres Abbremsen der Druckbogen auf die niedrigere Transportgeschwindigkeit.The pressure means are arranged according to an embodiment of the invention on one arm of the stop device and pressed under tension on the delay element. Preferably, this voltage is adjustable. This allows a safe braking of the printed sheets to the lower transport speed.
Nach einer Weiterbildung der Erfindung ist das Verzögerungsorgan mit der Greifertrommel angetrieben. Dies ist in konstruktiv besonders einfacher Weise dann realisierbar, wenn der Antrieb mit einem Reibrad erfolgt, das im Abstand zur Drehachse mit der Greifertrommel mitbewegt wird. Das Reibrad wird hier bspw. über einen Zahnriemen angetrieben, der mit einem ortsfesten Zahnriemenrad in Eingriff ist.According to a development of the invention, the delay element is driven by the gripper drum. This can be realized in a structurally particularly simple manner when the drive takes place with a friction wheel, which is moved along with the gripper drum at a distance from the axis of rotation. The friction wheel is driven here, for example, via a toothed belt which is in engagement with a stationary toothed belt wheel.
Die Druckbogen werden vorzugsweise gleichzeitig von zwei Greifern gefasst, welche jeweils unmittelbar neben den genannten Aussenflächen der Ringe angeordnet sind. Der Abstand zwischen den genannten Aussenflächen ist somit gleich oder unwesentlich kleiner als der Abstand der jeweils paarweise angeordneten Greifer.The printed sheets are preferably gripped simultaneously by two grippers, which are each arranged directly next to said outer surfaces of the rings. The distance between said outer surfaces is thus equal to or insignificantly smaller than the distance of the pairs arranged gripper.
Ein Abbremsen der Druckbogen auf eine besonders tiefe Transportgeschwindigkeit ist dann möglich, wenn gemäss einer Weiterbildung der Erfindung das Verzögerungsorgan zwei oder mehr als zwei Elemente aufweist, die unterschiedliche Transportgeschwindigkeiten besitzen. Die Druckbogen können dann über zwei oder mehr Stufen auf eine besonders niedrige Geschwindigkeit abgebremst werden. Damit kann die Auftreffgeschwindigkeit der Druckbogen auf den Anschlag und damit die Gefahr einer Beschädigung der Druckbogen noch weiter vermindert werden.A deceleration of the printed sheets to a particularly low transport speed is possible if, according to a development of the invention, the delay element has two or more than two elements which have different transport speeds. The printed sheets can then be braked over two or more stages to a particularly low speed. Thus, the impact speed of the sheet on the stop and thus the risk of damage to the sheet can be further reduced.
Der Bogenanleger eignet sich insbesondere als Anleger für eine Sammelkette, es können aber auch andere Transportvorrichtungen mit einem solchen Bogenanleger beschickt werden.The sheet feeder is particularly suitable as a feeder for a gathering chain, but it can also be loaded with other transport devices such a sheet feeder.
Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnungen näher erläutert. Dies zeigen:
- Fig. 1
- eine Seitenansicht eines erfindungsgemässen Bogenanlegers, wobei aus zeichnerischen Gründen eine Seitenwand des Gehäu- ses weggelassen ist,
- Fig. 2
- ein Schnitt durch den Bogenanleger entlang der Linie II-II der Fi- gur 1,
- Fig. 3
- ein Schnitt durch den Bogenanleger entlang der Linie III-III,
- Fig. 4
- eine räumliche Ansicht eines Teils des erfindungsgemässen Bo- genanlegers,
- Fig. 5
- eine Teilansicht des erfindungsgemässen Bogenanlegers und
- Fig. 6
- eine Teilansicht eines Bogenanschlages gemäss einer Variante,
- Fig. 7
- ein Diagramm zur Erläuterung der Geschwindigkeitsänderung der Druckbogen beim Transport auf der Greifertrommel.
- Fig. 1
- a side view of a sheet feeder according to the invention, wherein a side wall of the housing is omitted for illustrative reasons,
- Fig. 2
- a section through the sheet feeder along the line II-II of Figure 1,
- Fig. 3
- a section through the sheet feeder along the line III-III,
- Fig. 4
- 3 is a perspective view of part of the sheet feeder according to the invention;
- Fig. 5
- a partial view of the inventive sheet feeder and
- Fig. 6
- a partial view of a sheet stop according to a variant,
- Fig. 7
- a diagram for explaining the change in speed of the sheets during transport on the gripper drum.
Der Bogenanleger 1 weist gemäss
Die Greifertrommel 13 besitzt gemäss
Die
Auf den beiden Rädern 13a und 13b ist jeweils ein Ring 14 gelagert, der mit einem Antrieb 34 angetrieben ist. Die beiden Ringe 14 sind so angetrieben, dass ihre Umfangsgeschwindigkeit wesentlich kleiner ist als die der Greifertrommel 13. Die Umfangsgeschwindigkeit der beiden Ringe 14 ist bspw. halb so hoch wie die Umfangsgeschwindigkeit der Greifertrommel 13.On the two
Der Aussendurchmesser der Ringe 14 wird, wie in
Der Antrieb 34 weist ein Zahnriemenrad 18 auf, das auf der Welle 19 gelagert ist und das mit einer Halterung 38 fest mit dem Gehäuse 5 verbunden ist. Das Zahnriemenrad 18 ist somit bezüglich des Gehäuses 5 stillstehend. Im Abstand zur Welle 19 ist ein weiteres Zahnriemenrad 21 angeordnet, das Drehfest mit einer Welle 16 verbunden ist, die parallel und im Abstand zur Welle 19 mit einem Halter 17 an der Greifertrommel 13 befestigt ist. Um die Zahnriemenräder 18 und 21 ist ein Zahnriemen 20 gelegt, der mit einem Riemenspanner 22 gespannt ist. Dreht die Greifertrommel 13 auf der A-Welle 19 um die Achse 11, so bewegt sich die Welle 16 ähnlich einem Planet auf einer Kreisbahn um die Achse 11. Durch den Eingriff des Zahnriemens 20 wird gleichzeitig die Welle 16 um ihre Achse gedreht. Um die beiden Ringe 14 anzutreiben, sind auf der Welle 16 im Abstand zueinander zwei Reibräder 24 befestigt, die gemäss der
Die Greifertrommel 13 transportiert die vom Stapel 8 abgezogenen Druckbogen 7 jeweils mit vorzugsweise gleich bleibender Transportgeschwindigkeit v1 bis zur Anschlagvorrichtung 32. Kurz bevor jeweils ein Falz 7a (
Der Bogen 7 wird nun mit entsprechender verminderter Geschwindigkeit weitertransportiert, bis der Falz 7a am Anschlagelement 10 anliegt und der Druckbogen 7 entsprechend ausgerichtet wird. Das Anschlagelement 10 ist vorzugsweise aus einem dämpfenden Werkstoff, der ein Zurückspringen der Druckprodukte weitgehend verhindert. Die zum Falz 7a parallelen freien Ränder des Druckbogens 7, werden nun von der A-Welle 2 und der B-Welle 3 erfasst und der Druckbogen 7 geöffnet, so dass er gemäss
Bevor der Druckbogen 7 von der A-Welle 2 und der B-Welle 3 gefasst und geöffnet wird, bleibt der Bogen 7 am Anschlagelement ausgerichtet und bleibt durch die Reibkraft an den beiden Ringen 14 und am Anschlagelement 10 ausgerichtet. Beim Herausziehen des Druckbogens 7 aus der Anschlagvorrichtung 32 wird diese Reibungskraft überwunden.Before the
Die beiden Ringe 14 bilden mit den Druckrollen 12 ein Verzögerungsorgan 36, das die Druckbogen 7 in gleiche Richtung wie Greifer 6 transportieren, jedoch mit wesentlich verminderter Geschwindigkeit.The two rings 14 form with the
Die
Die in der
Anstelle der Druckrolle 12 kann auch ein anderes geeignetes Druckelement, bspw. auch ein endloses Band vorgesehen sein. Möglich ist auch eine Ausführung mit zwei im Abstand zueinander angeordneten Bändern 26 und entsprechend zwei Druckrollen 12. Die Druckbogen 7 werden dann entsprechend von zwei Bändern 26 und zwei Druckrollen 12 erfasst und zum Anschlagelement 10 transportiert.Instead of the
Der Geschwindigkeitsverlauf beim Transport der Druckbogen 7 im Bereich der Anschlagvorrichtung 32 wird nachfolgend anhand des Diagramms gemäss
In
In der
Claims (9)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07405131A EP1988040B1 (en) | 2007-05-01 | 2007-05-01 | Sheet feeder for loading a transport device with folded printed sheets |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07405131.9 Division | 2007-05-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2218667A2 true EP2218667A2 (en) | 2010-08-18 |
EP2218667A3 EP2218667A3 (en) | 2010-10-13 |
Family
ID=38474099
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10162547A Ceased EP2218667A3 (en) | 2007-05-01 | 2007-05-01 | Sheet feeder for loading a transport device with folded printed sheets and method for operating such a sheet feeder |
EP07405131A Not-in-force EP1988040B1 (en) | 2007-05-01 | 2007-05-01 | Sheet feeder for loading a transport device with folded printed sheets |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07405131A Not-in-force EP1988040B1 (en) | 2007-05-01 | 2007-05-01 | Sheet feeder for loading a transport device with folded printed sheets |
Country Status (6)
Country | Link |
---|---|
US (1) | US7891649B2 (en) |
EP (2) | EP2218667A3 (en) |
JP (1) | JP5102693B2 (en) |
CN (1) | CN101298299B (en) |
AT (1) | ATE473938T1 (en) |
DE (1) | DE502007004391D1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE502007004391D1 (en) * | 2007-05-01 | 2010-08-26 | Mueller Martini Holding Ag | Sheet feeder for loading a conveyor with folded sheet |
JP5477348B2 (en) * | 2011-08-09 | 2014-04-23 | コニカミノルタ株式会社 | Paper processing apparatus and image forming system |
CN103738775A (en) * | 2013-12-17 | 2014-04-23 | 安徽华印机电股份有限公司 | Section dropping speed reduction mechanism |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3035497A1 (en) | 1979-10-17 | 1981-04-30 | Grapha-Holding Ag, Hergiswil | BOW FEEDER |
EP0716995A2 (en) | 1994-12-14 | 1996-06-19 | Grapha-Holding Ag | Device for feeding the gathering section of a gathering and stitching machine |
DE19738920A1 (en) | 1997-09-05 | 1999-03-11 | Brehmer Buchbindereimaschinen | Bookbinding staple paper guide for conveying folded sheets of paper to a bookbinding machine receiving register |
EP1988040A1 (en) * | 2007-05-01 | 2008-11-05 | Müller Martini Holding AG | Sheet feeder for loading a transport device with folded printed sheets |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH665411A5 (en) * | 1985-02-07 | 1988-05-13 | Grapha Holding Ag | Collator. |
US5100116A (en) * | 1988-12-19 | 1992-03-31 | Quad/Tech, Inc. | Apparatus and method of processing signatures |
US5511769A (en) * | 1994-10-31 | 1996-04-30 | Am International, Inc. | Sheet material collating apparatus |
JP3786481B2 (en) * | 1996-10-15 | 2006-06-14 | 大日本印刷株式会社 | Initial setting method of operation timing in paper feeder |
US5921546A (en) * | 1997-06-02 | 1999-07-13 | Heidelberg Finishing Systems | Apparatus for decelerating sheet material while maintaining sheet registration |
EP1024099B1 (en) * | 1999-01-26 | 2002-06-05 | Grapha-Holding Ag | Device for opening and depositing a folded sheet on a travelling transport device |
DE502005004264D1 (en) * | 2005-03-10 | 2008-07-10 | Mueller Martini Holding Ag | Device for opening and depositing a folded sheet |
-
2007
- 2007-05-01 DE DE502007004391T patent/DE502007004391D1/en active Active
- 2007-05-01 EP EP10162547A patent/EP2218667A3/en not_active Ceased
- 2007-05-01 EP EP07405131A patent/EP1988040B1/en not_active Not-in-force
- 2007-05-01 AT AT07405131T patent/ATE473938T1/en active
-
2008
- 2008-04-28 US US12/149,167 patent/US7891649B2/en not_active Expired - Fee Related
- 2008-04-30 CN CN200810094975.XA patent/CN101298299B/en not_active Expired - Fee Related
- 2008-05-01 JP JP2008120047A patent/JP5102693B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3035497A1 (en) | 1979-10-17 | 1981-04-30 | Grapha-Holding Ag, Hergiswil | BOW FEEDER |
EP0716995A2 (en) | 1994-12-14 | 1996-06-19 | Grapha-Holding Ag | Device for feeding the gathering section of a gathering and stitching machine |
DE19738920A1 (en) | 1997-09-05 | 1999-03-11 | Brehmer Buchbindereimaschinen | Bookbinding staple paper guide for conveying folded sheets of paper to a bookbinding machine receiving register |
EP1988040A1 (en) * | 2007-05-01 | 2008-11-05 | Müller Martini Holding AG | Sheet feeder for loading a transport device with folded printed sheets |
Also Published As
Publication number | Publication date |
---|---|
EP1988040B1 (en) | 2010-07-14 |
CN101298299B (en) | 2014-07-30 |
EP1988040A1 (en) | 2008-11-05 |
JP2008273741A (en) | 2008-11-13 |
US20080272537A1 (en) | 2008-11-06 |
ATE473938T1 (en) | 2010-07-15 |
EP2218667A3 (en) | 2010-10-13 |
DE502007004391D1 (en) | 2010-08-26 |
CN101298299A (en) | 2008-11-05 |
JP5102693B2 (en) | 2012-12-19 |
US7891649B2 (en) | 2011-02-22 |
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