DE427545C - Completely self-contained storage for the cylinders of rotary presses - Google Patents

Description

GERMAN EMPIRE

ISSUED ON
APRIL 10, 1926

REICH PATENT OFFICE

PATENT LETTERING

CLASS 15d GROUP 26 / Q

(Sch 66ηg-j XII! 15 d)

Patented in the German Empire on January 3, 1923.

In rotary printing machines, especially gravure printing machines, the axes of the Cylinders, which are used to print the paper, very often a small amount laterally in the Camps can be shifted and re-established in the new location. It must be special the cylinder carrying the printing form very often, possibly several times in a day, to be taken from its bearings so

ίο the old printing form removed from the axis and a new one can be applied; it must also be the cylinder to put the printing form on mechanical way to be removed from the cylinder, be transferred to another machine.

Furthermore, the cylinder serving as an impression cylinder for the cylinder carrying the printing forme has to be removed from its bearings every now and then because of the renewal of its rubber cover. If the cylinders have plain bearings, the bearing surfaces, as they are partially exposed, give rise to all sorts of inconveniences - soiling, damage, etc. -. If, on the other hand, roller bearings are provided, the ball or roller bearings are exposed when the cylinders have been removed from the bearings and are thus exposed to contamination. Must the roller bearings z. B. be removed from the axes when vulcanizing the rubber elevator of an impression cylinder, it can only be done by dismantling the storage. The bearings on which the roller bearing sits are attacked by the heat and need to be cleaned every time, but this affects the good fit of the roller bearing.
According to the invention, the bearings are designed so that it is not the axis that forms the running surface, but rather a sleeve which can be moved and locked on the axis forms the running surface in plain bearings and the seat for the roller bearings in the case of roller bearings. Plain bearings and roller bearings are surrounded by a closed housing designed as a rotary body. The bushing on the axis is advantageously fixed by means of a clamp and screw. After releasing the clamp, the axis can be shifted slightly laterally in the bearing, while the bushing, which forms the bearing surface or the seat for the roller bearings, together with the housing surrounding it, is fixed in the frame. When the rubber cover of an impression cylinder is vulcanized, the bearings can easily be pulled off the axle. If the axis is removed from the racks more often, the bearings remain fixed on the axis, since they form a self-contained whole, and the bearing surfaces or bearings cannot be damaged or soiled. It can also use the cylinder from the machine removed and without L ^T mstände in another machine are placed, or it can use the bearing from the axle and replaced by others. By designing the housing as a rotating body, the cylinder including the bearing can be rolled on its mounting without the risk of damage to the bearing points. The completely closed, dust- and oil-tight storage is a particular advantage. The bearings do not need to be cleaned and the oil renewed after each removal of the axle from its supports or after the bearings have been removed from the axle, but the oil remains in it

Claims (4)

closed bearing, which results in extremely economical oil consumption. The drawing shows, for example, some embodiments, namely Fig. 1 illustrates an axle bearing, Fig. 2 is a side elevation of the bearing, Fig. 3 is a plain bearing and Fig. 4 is a ίο sleeve combined with a drive wheel. The left bearing A according to Fig. Ι is set up to absorb larger lateral pressures by means of a ball bearing, the right bearing B is provided with comb washers that take the housing with it when the axis is pulled or the bearing through the housing when the axis is moved laterally hold on to the support. The comb disks can also be used to absorb lateral pressures. The housing of the bearing A is held laterally in the printing machine frame t in a known manner by cheeks s, while the housing of the bearing B rests in the frame tl and has lateral play so that the bearing can easily follow the expansions of the axis. In the case of bearing B (Fig. 1), a comb washer e, a ball bearing f and another comb washer e1 are mounted on a bush-α-with ferrule b and clamping screw c; parts e, f, e1 are tightened against the shoulder h of the sleeve by a nut i. A housing g, designed as a rotating body, pushed over the ball bearing, is closed by a disk k. The two comb disks e, e1 hold the housing g in the correct position relative to the bushing a. The lubricating material is retained in the interior of the bearing by the felt rings r. In the case of bearing A (Fig. 1), instead of the comb disks e, e1, a ball bearing I, e.g. B. a double-acting longitudinal bearing, arranged to accommodate larger lateral pressures. The ball bearing I can be replaced by two axial bearings lying to the right and left of the radial bearing +5 or a combined bearing can be used in place of these. The sliding bearing (Fig. 3), for example provided with a white metal lining, is formed from a bushing m provided with the bearing surface η and rotating in a housing 0. The latter is held between the shoulder p of the sleeve m on the one hand and the nut q on the other hand in its position. The housing 0 lies on a base t and is held in place between the cheeks s. Here, too, the oil is held back by the felt rings r inside the bearing. In Fig. 4, the sleeve a with a drive wheel, z. B. a gear connected. The dash-dotted form applies to plain bearings, the offset form to roller bearings. The type of storage is decisive for the shape of the can. A particular advantage is that after loosening the clamping screw c the gear u can be rotated while the axis ν is stationary with the forme cylinder, or the axis ν can be rotated and the gear is stationary, so that the register compared to another forme cylinder is simple or printing units can be adjusted. If the axis ν (Fig. 1) is to be shifted laterally, the clamps b on the bushes α are loosened somewhat by turning the screws c, the axis ν by some means in the bearing A resting in the frame t and in the one in the frame t1 stationary bearing B moved laterally into the desired position; then the clamping screws c are tightened again. ■■■■ · ■ 8 () The fact that the bearings are designed as rotating bodies makes machining much easier and the bearings can be fully assembled without the need for the axle. Ss Ρλ τ κ ν t-Ax Proverbs: 1. Completely self-contained storage for the cylinder of rotary presses, characterized in that the running surface [n in Fig. 3) of a plain bearing is formed by a bushing (m) which can be moved and determined on the axis {v) and with the exception of the clamping device (δ, c) firmly connected to the bushing, it is enclosed by a housing (0) designed as a rotary body. 2. Completely self-contained storage for the cylinder of rotary presses, characterized ■ that a normal roller bearing (f in Fig. 1 ) sits on a sleeve (a) which can be moved on the axis (v) and can be determined and with With the exception of the clamping device (δ, e) firmly connected to the bushing, it is enclosed by a housing (g) designed as a rotary body. 3. Storage according to claim 2, characterized in that the housing (g in Fig. 1) is held in its position relative to the bearing bush (a) by comb washers [e, e ¹ ) . 4. Storage according to claim 1 and 2, characterized in that the sleeve (a in Fig. 4 or m in Fig. 3) is connected to a drive wheel (u) . 1 sheet of drawings.