DD277446A1 - DEVICE FOR TURNING THE ARRANGEMENT OF A BOGEN ENGINE TO A PRINTING MACHINE - Google Patents

Abstract

The invention relates to a device for rotating angle-appropriate connection of a sheet feeder to a sheet-fed press within a working cycle of the sheet feeder, wherein the sheet feeder is driven by the sheet-fed press over a Einzahnkupplung. The object of the invention is a device for rotating angle-appropriate connection of a sheet feeder to a printing press independently of the respective working speed of the printing press. According to the invention, the object is achieved in that a pre-acceleration transmission is provided parallel to the single-clutch clutch. Fig. 1

Description

According to the invention the object is achieved in a device according to the preamble of the first claim., Is provided in parallel to the Einzahnkupplung oin pre-acceleration.

The Vorbeschleunigungsgetriebe consists of a arranged on a drive shaft and an intermediate shaft spur gear. The intermediate shaft is connected by means of an asynchronously switchable coupling with a further intermediate shaft on which a corresponding with a roller lever mounted in a roller cam is arranged, wherein the roller lever is rotatably mounted on a shaft and the shaft via a pinch roller clutch, a shaft, a Gear, an intermediate gear and another gear with the output shaft is in communication.

On the drive shaft and on the output shaft each have a pulse generator are arranged. The pulse generators are connected by means of a sequential circuit with the Einzahnkupplung and the asynchronously switchable coupling.

embodiment

An embodiment of the invention will be explained in more detail below. In the drawings shows

Fig. 1: the schematic representation of the device for rotational angle-appropriate connection of the sheet feeder, Figure 2: the block diagram of the device according to the invention.

As shown in Fig. 1, the device according to the invention consists of an associated with the sheet-fed printing machine drive shaft 1, which is coupled via an electrically switchable Einzahnkupplung 2 with the output shaft 3, which also darstelii the Eintourenwelle the sheet feeder. On the drive shaft 1, a spur gear 4.1 is arranged, which meshes with a spur gear 4.2, which is connected to an intermediate shaft 5. The spur gears 4.1 and 4.2 form the spur gear 4.

The intermediate shaft 5 can be connected by an asynchronously shiftable clutch 7 with the intermediate shaft 6, which is provided with a rotatably mounted cam 8 and a loosely arranged intermediate wheel 9. On the cam 8, a roller 10 runs off, which is mounted in a roller lever 11, which is fixedly connected to a Walle 12 and pivotable against a spring 13. The shaft 12 is connected by means of a pinch roller clutch 14 with the shaft 15 on which a gear 16 is rotatably mounted, which is connected via the intermediate gear 9 with the gear 17 which is fixedly connected to the output shaft 3 in operative connection.

On the drive shaft 1, an electric pulse generator 18 and on the output shaft 3, a pulse generator 19 (see Figure 2) is further attached, which are linked in a known per se control, which is shown as a control unit 20 with the electrically switchable clutches 2.7

 The operation of the device is the following:

The drive of the Sogenanlegers done by the sheet-fed press on the drive shaft 1 and the engaged Einzahnkupplung 2, the asynchronously shiftable clutch 7 is disengaged, on the output shaft 3 and thus on the single-turn shaft of the sheet feeder. In case of disturbances, the electrically switchable Einzahnkupplung 2 is separated and brought the sheet feeder by means of a brake, not shown, according to the speed-dependent braking distance within S100 ° of the output shaft 3 to a standstill. After the fault has been eliminated, the command || on || As a result, the intermediate shaft 6 is entrained and thus the cam disc 8 is rotated, whereby the roller 10 runs from the lower detent to the upper detent of the cam disc 8. The thereby executed by the roller lever 11 against the force of the spring 13 pivotal movement causes rotation of the shaft 12 and thus via the gear 16, the intermediate gear 9 and the gear 17, an acceleration of the output shaft 3 to a speed corresponding to the interpretation of the on the Kurbenscheibe 9 imprinted law of motion is preferably 10% below the speed of the drive shaft 1. Thereafter, via the control unit 20, the connection of the Einza'inkuppliing 2, which is possible due to a occurring even at maximum operating speed difference of about 10% with a low inrush, and so an acceleration of the output shaft 3 and thus the sheet feeder within a working cycle on the operating speed of the sheet-fed press, wherein the pinch roller clutch 14 allows overtaking of the pre-acceleration transmission.

After switching on the single-clutch 2, the release of the clutch 7 takes place about 360 ° after the Einkupplungszeitpunkt and the return, due to mass and spring forces, the roller 10 to the low latch and thus in a defined starting position.

With the realization of the Auskuppelzeitpunktes the clutch 7 werr ¹ η created the starting conditions for the transmission, and mass and spring forces are required only to fix the position.

Claims (4)

-1- ί! 7 Claims: 1. A device for rotational angle-appropriate Zuschaitung a Bog snanlogers to a sheetfed press within a working cycle Bogei.anlegers, wherein 1er sheet feeder is driven by the sheet-fed press via a Einzahnkupplung, characterized in that parallel to the Einzahnkupplung (2) a Vorbeschleunigungsgetriebe is arranged. 2. Device according to claim 1, characterized in that the Vorbeschleunigungsgetriebe consists of a on a drive shaft (1) and an intermediate shaft (5) disordered spur gear (4), the intermediate shaft (5) by means of an asynchronously sch.iltbaren coupling (7 ) connectable to an intermediate shaft (6) on which is arranged a cam disc (8) corresponding to a roller (10) mounted in a roller lever (11), the roller lever (H) being mounted non-rotatably on a shaft (12) and the shaft (12) via a pinch roller clutch (14), a shaft (15), a gear (16), an intermediate gear (9) and a gear (17) with the output shaft (3) is in communication. 3. Device according to claim 2, characterized in that au ν the drive shaft (your pulse generator (18) and on the output shaft (3) a Impulsgebe '· (19) is arranged. 4. Device according to claim 2 and 3, characterized in that the pulse generator (18,19) are connected by means of a sequential circuit with the Einzahnkupplung (2) and the coupling (7). For this 2 pages drawings Field of application of the invention The invention relates to a device for rotating angle-appropriate connection of a sheet feeder to a sheet-fed press within a working cycle of the sheet feeder, wherein the sheet feeder is driven by the sheet-fed printing machine via a Einzahnkupplung. Characteristic of the known state of the art In sheetfed presses, it is common that the drive of the sheet feeder is made by the Eintourenwelle the printing press via a Einzahnkupplung. In this case, the single-clutch preferably has the task to enable a clock and angle-correct coupling of the investor, which in particular after the occurrence of stoppers, due to faulty, crooked or double bow, is required. The sheets separated by the sheet feeder are fed to the sheet feeder in a scaly manner and checked for missing soils or incorrect separation and alignment before entering the press. In the presence of double, faulty or oblique sheet, the electrically switchable Einzahnkijpplung is disengaged and brought to a standstill by a simultaneously responsive brake of the sheet feeder, which due to the inertia of the sheet feeder and the response time of the control device and the electrically switchable Einzahnkupplung within the necessary braking distance, which amounts to about 100 ° of the single-turn shaft at maximum speed, takes place, d. h., the arbor is further promoted around this path in the direction of the bow plant. In order to cope with the now first bow of the arbor after the elimination of the causes of the interruption of the arch system, it is necessary to switch the sheet feeder within a revolution of its Eintourenwelle taking into account the date of transfer of the sheet to the system of sheet-fed press, which is realized by the Single-clutch, whereby the investor is abruptly accelerated to working speed. To keep the inrush occurring during coupling within manageable limits, it is common to reduce the working speed of the printing press, which may for example be 15,000 sheets per hour, to about 3000 sheets per hour, at this speed to couple the sheet feeder over the Einzahnkuppluny and then to control the maximum operating speed aries. This operation has the Machteil that caused by double, false or oblique sheet stopper high loss times. In addition, by leaving the working speed of the printing machine for reversing the color-water balance is disturbed, which leads to Makulaturan'all. Ziol of the invention Ziol dor invention is oino device for drohwinkelgerochten connection of a sheet feeder to a printing press, the oine reduction dor Vorlustzoiton and the spoilage allowed. Wee ° n of the invention The object of the invention is an oino device for rotating angle-appropriate connection of a sheet feeder on a printing machine, regardless of the jowoiligen Arboitsdrehzahl the printing press.