SU1442491A2 - Delivery device of sheet-fed printing press - Google Patents

Abstract

The invention relates to the field of printing, and in particular to receiving devices for a sheet-fed printing press, and allows to increase the reliability of its operation. A feature of this device is that it is equipped with a means for delaying the feeding sheets on the table, made in the form of a series of telescopic rods with needles and a drive for moving them along a given cycle. 1 il.

Description

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The invention relates to the field of printing, in particular, to receiving devices5 used in sheet-fed printing machines, and is an improvement of the invention according to the authors. Ev, No. 692765.

The aim of the invention is to increase the reliability of its operation.

In the drawing, the schematic diagram of the receiving device for a sheet press is shown in principle.

The receiving device comprises a main stacking table 1 with a drive for its vertical movement, an auxiliary table in the form of telescopic K1-IX rods 2 with a means of installing them into the working position and. means of delaying falling sheets.

The drive of the main stacker table 1 includes a crank 3, a shatup 4, a yoke 5 with a pawl 6 interacting with a ratchet 7, a conical 8 and a worm gear 9 and a drum 10 on which cables 11 and 12 are wound, connected by free condes to the table 1. Thus, the rotation of the drum 10 performs the vertical movement of the table 1 moving along special guides (not shown). The amount of lowering of the table 1 depends on the thickness of the paper and is adjusted by turning the slide 13 associated with the handle 14.

In order to quickly raise or lower the main table 1, an electric motor 15 is connected to the worm gear shaft 9.

The auxiliary table installation tool has a drive shaft with disks 16 rigidly mounted on it, receiving the drive from the electric motor 17 through a worm gear 18, and narrow flexible belts 19, which are fixed on the disks 16 by one ends, and The shells 20 through the slots are connected to the end sections of the telescopic rods 2. In the working position (when receiving sheets), the telescopic rods 2 are extended and supported on the rear 21 and front 22 fixed supports.

The means of delaying the falling sheets contains a series of needle-like rods 23, driving these rods in the form of an electromagnet 24 dp of their installation in the path of movement of the rear edges of the falling

sheets and spring 25 return the rods 23 to its original position. All the details of this tool are mounted on a frame (not shown) of the brake rollers 26 and can, together with the rollers 26, move when the format of the output sheets is changed. Dp control by electromachine 25 is used with a dial setter consisting of a metal sector 27 fixed on the shaft of the crank 3 and a proximity sensor 28.

The device works as follows.

The main table 1 with the stocks 29 of the sealed paper first lowers a little, freeing up space, for the secondary table. The activation of the mechanism of accelerated lowering can be carried out manually or automatically by a Sact-1 table by turning to the limit switch (not shown). Then, on the command of the cyclic unit set at that time, the waod is carried out according to the cycle of needle-like rods 23 under the falling sheets and thereafter the telescopic rods 2 are inserted into the gap formed between the sheets. the damages of the latter, resting on the supports 21 and 22, form an auxiliary table for the output sheets-prints. Then, the stocks of printed sheets are removed, the new main table 1 is installed and it is accelerated to the top position.

The activation of the lifting mechanism of the main stacking table is carried out by a sensor. The same sensor includes a reversing motor 7e which, through a worm gear 18, rotates the disks 6, which by winding the belts 19 return the telescopic rods to their original position. The sheets' foot, lying on the telescopic rods x 2, under the action of its own weight falls on the main slipway table 1.

The use of the proposed invention in printing presses will improve the reliability of the receiving device by eliminating the possibility of smith sheets when changing the pile table.

Claims (1)

Invention Formula Receiver for sheet-fed printing machine auth. St. No. 692765, 31442А914 characterized by the fact that the hinges with needle like rods In order to increase the reliability of its operation of these rods for their installation, it has a means of delaying the assembly in the path of moving the rear sheets stealing to the table, consisting of a row of sheets arranged above the telescopic plates.