SU1680610A1 - Arrangement for replacing feed pile of feeder of sheet-fed printing press - Google Patents

Abstract

The invention relates to the field of printing machinery and can be used in sheet-fed sheet presses to replace the table with the sheet material removed from it with a new table with a full slipway without interrupting the process. The purpose of the invention is to increase the reliability of the device for replacing the pile of the feeder. The device consists of the main and auxiliary tables, drives for their vertical movement, means for installing the sliding elements of the auxiliary table in the slots of the main table. Achieving the objectives of the invention is provided by introducing into the device means for providing a predetermined position of the sliding elements of the auxiliary table relative to the slots of the Main table. This means includes a carriage, which is mounted on a support beam of a drive for the vertical movement of the auxiliary table, a reversible drive of the carriage along the support beam, and sensors for monitoring the position of the carriage relative to the main table, which are associated with the carriage drive. 3 hp ff, 3 ill. sl C

Description

The invention relates to a printing machinery industry and can be used in sheet-fed sheet machine presses to replace a table with sheet material removed from it with a new table with a full slipway without interrupting the process.

The aim of the invention is to improve the reliability of the device in operation for replacing the stockpiles.

Figure 1 shows a schematic kinematic diagram of the device; figure 2 - section aa in figure 1; on fig.Z - view B in figure 1.

The device for replacing the stocks of the sheet feeder of the sheet press machine contains the main table 1, the auxiliary table

2 and drives for their vertical movement.

The drive of the vertical movement of the main table 1 includes a shaft 3 with sprockets 4 and 5 at the ends connected to the table by means of chains 6 and 7. The shaft 3 is connected with the electric motor 8 of the accelerated movement of the main table 1 through a worm gear 9 and the automatic motor 10 moving the main table 1 by means of a chain 11, a gear 12 and a worm 9 gears.

The vertical movement drive of the auxiliary table 22 includes chains 13 and 14, the ends of which are fixed to the support beams 15 and 16, worm gears 17 and 18, and a two-speed motor 19.

ON 00 About ON

The secondary table 2 is made in the form of a set of sliding elements of telescopic rods placed in one plane and mounted on a carriage 20, which, in turn, is mounted on the beam 16. The carriage 20 moves along the beam 16 by means of a reversing drive, which is placed in a fixed on the carriage 20 of the housing 21 and includes an electric motor 22 mounted on its shaft a worm to 23, which interacts with the last worm gear 24 with a threaded hole and is fixed on the support beam 16, the running screw 25, passing through zbovoe wheel hole 24 and forming with the latter a screw pair, the carriage movement is limited by end 20 of the switch 26 and the carriage 27. The drive can be formed, for example, hydraulically.

The carriage 20 in addition to the auxiliary table 2 carries a means of installing its sliding elements in the slots 28 of the main table. This tool includes a shaft 29 with disks 30 rigidly attached to it and flexible tapes 31 wound on disks 30, ensuring the extension of the telescopic rods of the auxiliary table 2.

Hydraulic devices can also be used as drive means of telescopic rods.

The means for mounting the auxiliary table 2 in the slots 28 of the main table 1 is associated with an automatic feed mechanism of the stocks 32, which includes an electric motor 33 and gears 34.

In order to accurately position the telescopic rods relative to the pazoo 28 of the table 1, sensors 35 and 36 are monitored on the carriage 20 and monitored relative to the table 1 and connected to the carriage drive.

These sensors, together with the carriage 20 and its drive, form a means for ensuring the predetermined position of the sliding elements of the table 2 relative to the slots 28 of the table 1.

A device for automatically replacing the stock of the feeder operates as follows.

The main table 1, with a stack of paper laid on it, is automatically lifted by the electric motor 10 through the chain 11, the gear 12 and the worm gear 9, the shaft 3, the wind wheels 4 and 5 and the chains 6 and 7 as the sheets are fed into the machine. When the set recharge level is reached, the metal plate 37, fixed on the main table 1, will start to overlap the sensor 38, which includes the following sensors 35 and 36, searching for the grooves 28 of the main table

;

1. The main table 1 can be shifted towards one of the following sensors 35 and 36. If the main table 1 is shifted towards the sensor 35, and the metal plate 37

blocked the zone of its action, then the command is given to the electric motor 22. The rotation of the worm-couples 23-25 provides movement of the movement drive body 21 rigidly connected with the movable beam 16,

0 towards the sensor 36 until the metal plate 37 leaves the zone of the sensor 35. If the main table 1 is displaced towards the sensor 36, a similar process occurs with the movement of the pivot of the moving beam 16 with the telescopic rods of the auxiliary table 2 attached to it. towards the sensor 35. Thus, the telescopic bars of the sub-table 2 are set against

0 notches 28 main table 1.

After this condition has been met, the electric motor 33 is automatically turned on, the rotation from which is transmitted through gears 34 to the shaft 29 with the discs 30,

5 while the flexible belts 31 wound on the disks 30 push the telescopic rods of the auxiliary table 2 into the grooves 8 of the main table 1 With the telescopic rods fully extended

0 table 2, their ends are on the supporting beam 15. Simultaneously, the limit switch 39 turns off the electric motor 33 turns on a two-speed electric motor 19 to automatically raise the auxiliary table 2. When the telescopic rods of the auxiliary table 2 touch 32, the limit switch 40 switches the raising of the auxiliary table 2 to automatic and stops lifting

About the main table 1. The telescopic rods of the auxiliary table 2, lifting automatically up, remove the pile of the stocks 32 from the main table 1, while the metal plate is fixed on

5, the main table 1, leaves the zone of operation of the sensor 41. The latter gives a command to the electric motor 8 to accelerate lowering of the main table 1.

Samonaklad feeds sheets from the foot located on the side table 2, and

0, the main table 1, which is in the lower position, loads a new stack of paper. After that, the electric motor 8 is switched on, which provides lifting of the new stocks 32 to the telescopic rods of the auxiliary table 2. In the upper position, the stocks 32 slightly lifts the telescopic rods of the auxiliary table 2 from the support beam 15. This triggers the limit switch 40, which includes an electric motor 10 for automatically lifting the main table 1 and the electric motor 33 for driving the flexible tapes 31 inside the telescopic rods auxiliary Tel'nykh table 2. Tape 31 Referring to winding wheels 30, is drawn telescopic boom auxiliary section 2 of the paper stack. The sensors 42 and 43 control the complete retraction of the telescopic rods of the table 1. When the telescopic rods of the auxiliary table 2 are completely removed, the end switch 44 is activated, which turns on the flexible tape drive electric motor31 and turns on the electric motor 19 to lower the auxiliary table 2 into the initial lower position. Turns off the motor 19, the limit switch 45.

If during the time of the automatic lifting of the auxiliary table 2, the slipway 32 did not have time to change, the switch 46 is activated, stopping the supply of sheets to the machine.

Due to the presence in the device of the movement of the auxiliary table in the horizontal plane (transverse movement), manual adjustments are avoided when the telescopic rods of the auxiliary table 2 are aligned with the slots of the main table 1, which makes it possible to use the proposed device in modern high-speed machines.

Thus, the device according to the invention makes it possible to increase the reliability of the process of reloading the stocks on the feeder and facilitates maintenance conditions.

Claims (4)

1. A device for replacing the Gstapel samonaklada sheet press machine, containing a main table with a drive of its vertical movement, an auxiliary table, made in the form of sliding elements placed in one plane, means of mounting the auxiliary table elements in the slots of the main table and driving the vertical movement of the auxiliary table, including a support associated with the transport chains beam, from which, in order to increase its reliability in operation, it has the means to provide a predetermined position of the sliding elements of the auxiliary table relative to the slots of the main table, including a carriage mounted on the support beam, reversing the carriage drive along the support The beams and sensors controlling the position of the carriage relative to the main table, associated with the carriage drive, while the auxiliary table and means for installing its sliding elements in the slots of the main table are mounted on the carriage. 2.-The device according to claim 1, about tl and h and y e with the fact that the sliding elements are made in the form of telescopic rods. 3. The device according to claims 1 and 2, characterized in that the carriage drive includes reversible electric motor, worm and screw pairs, while the screw screw of the screw pair is fixed on the support beam, and the remaining elements of the carriage drive are mounted on it. 4. The device according to claims 1 and 2, characterized in that the carriage drive is made hydraulic. with vD  (Y Bui b