FI58957C - PAPPERSKALANDER I SYNNERHET GLAETT- OCH SATINERINGSKALANDER - Google Patents

Description

RÄr7! M <ii) * uu.iutu * published ,, u «58957

Mj lJ 1 'UTLAOGNINGSSKRIFT 302.0' • • <^ 5 C (45) Patent granted on 11 May 1931

Patent oeddelat ^ v ^ (51) Ky.ik.3 / iw.a.3 D 21 G 1/00 FINLAND — FINLAND (21) * tmttlhalnmu »- P * mitaM6knlns 77021 * 0 (22) HakmnitpUvt - An * öknlnpd« g 26.01.77 '* (23) Alkupllvt — Giltif httfdag 26.01.77 (41) Tullut | ulklMk * l - Bllvlt off »ntll | 31 07 77 ratant- oeh reglatrrtyral — n 'Anattkan utlafd och vtl.tkrtfton publkand 30.01.8l (32) (33) (31) Pyydetty ctudkoM —BctM priorltat 30.01.76

Germany Federal Republic-Förbundsrepubliken Tyskland (DE) P 26031 * 85.5 Proof-Styrkt (71) Kleinevefers GmbH, Kleinewefers-Kalanderstrasse, 1 * 15 Krefeld,

Federal Republic of Germany-Förbundsrepubliken Tyskland (DE) (72) Jiirgen Schlunke, Krefeld, Reinhard Wenzel, Tönisvorst, Federal Republic of Germany-Förbundsrepubliken Tyskland (DE) (7 * 0 Leitzinger Oy (5 * 0 Paper calender, especially polishing calender and satin , i synnerhet glätt- och satineringskalander

The invention relates to a paper calender, in particular a polishing and satin calender with flexible rollers, in which a plurality of paired rollers with their bearings are guided substantially horizontally in the calender body, at least one of the last two rollers being a compression-loaded cylinder piston.

Alternatively, in known calenders in which the rollers are arranged one on top of the other and are guided in a roll frame, the upper and / or lower roll can be loaded in the direction of the roll plane. In all vertical calenders of this type, the line pressure between the rollers increases from the upper to the lower roll gap due to the absolute weight of the rollers in the vertical roll package. Making this line pressure between adjacent rollers independent of the weight of the rollers above them requires the use of complex equipment. - If the roll of the lowest roll package can be lowered to form a roll gap between the rollers, then a strong cylinder piston device is needed to lift the lower roll and the weight of the roll pack resting on it.

2 58957

Finnish patent publication 45587 discloses a calender in which three rollers are arranged horizontally side by side, whereby a double-acting power unit presses both outer rollers against the middle roll. In this case, the first bar is acted upon by longitudinal tension and the second bar by longitudinal compression, as a result of which the outer rollers can be adjusted. The rollers are then separated by moving the rollers horizontally. Finnish patent publication 55373 describes a vertically standing calender in which the formation of gaps between the rollers takes place in a common vertical plane of the rollers. It is further known from Finnish patent publication 35953 to arrange a row of rollers at an angle of 45 ° to the horizontal.

The object of the invention is to provide a calender in which fine-grained pressure control from zero to the desired maximum pressure in the roll slots is possible and in which, in addition, the formation of roll intermediate spaces in the event of a goods track break can be carried out quickly. Furthermore, in relation to the known solution models, the calender body must be easier to implement.

To solve this problem, the invention proposes a calender of the type mentioned in the introduction, characterized in that some of the rollers can be lowered from their position where they are in contact with non-lowerable local rollers via the goods path, forming an intermediate space with respect to these local rolls. Primarily, every other roll in the roll row can be lowered alternately.

All rollers on the calendar can be held in their working position in one common horizontal plane. However, it is also possible to make a division in which the non-lowering calender rolls are guided in a second common horizontal plane, the lowering rollers being displaceable in their lower working position in the lower second plane, so that the goods path is guided through zigzag-shaped rollers the height of the non-countable rollers is less than the circumference of the countable rollers.

3 58957

In the calendar according to the invention, the pressure of one or both end rollers is first depressurized and then a small roll gap is formed in the event of a web failure, which must be percussive, as well as a larger gap to retract the head of a new web or a broken web part. In addition to the above-mentioned possibility of forming roll slits, arranging the axis plane of the rolls in a horizontal plane has the advantage that a similar pressure on the material web can be achieved in all roll slots.

In another solution of the invention, the horizontally adjustable bearings in the lowering rollers can be moved vertically one by one or by means of a common lowering device. Primarily, the end rollers of the roll package are not lowerable and are both under the influence of a cylinder-piston device, by means of which the horizontally arranged rollers are pressed against each other and pulled apart.

In the practical solution of the invention, the lowerable rollers can be locked in position with their working height, so that maintaining the pressure in the cylinder-piston device moving the rollers is unnecessary. If two rows of folding rollers parallel to the calender rolls are used in a calender of the type described above, the folding rollers at the height of the lowering calender rolls are located above these calender rolls and are substantially horizontally displaceable with them, which primarily follows .

By shaping the calender in a corresponding manner, the upper folding rollers can always be lowered below the non-lowerable calender rolls, so that in the event of a goods track break the new beginning of the goods line can be driven straight or approximately straight below the non-lowerable rollers.

Admittedly, recumbent calendars are known for machining artificial film paths. In contrast to a paper calender operating at a freight web speed of 600 to 800 m / min, the film passes through the artificial material calender at speeds of approximately 50 m / min. The difficulties caused by interruptions in the freight track are not as small as the vibration and noise problems of rapidly rotating rollers.

The invention is based on the idea that the rollers, in particular the flexible rolls of the calendar, which are coated with paper or another coating, act like springs when the pressure on them ceases. In this case, the substantially horizontal arrangement of all the rollers and the advantageous rolling friction of the roller bearings provide an impact-like displacement of the rollers on the calender body. With the rapid lowering of every other roll, the necessary roll gap is formed in the shortest possible time when the tail line breaks. What is essential in this calculation is that all the roll slits are formed at the same time, and not as in the vertical calender where the roll slits are formed at the stern. - Nor could reclining letterpress calenders with a single roll slot be seriously conceivable for a paper calender, which according to all rules must have five rolls.

The advantage of the calendar according to the invention is not only the high compression of the roll slots at a low construction height and the impact-like formation of the spaces between the rolls in that the forces received by the vertical calendar are transferred to the base of the installation site. The vibrations present in all the rollers as well as the vibrations of the frame are received from the base.

Sound and safety enclosures can be shaped like simple plate-like covers * Because all roll slots can be depressurized in an instant, the gluing points on the paper path can be run through the calendar in continuous use without compromising the rolls.

The drawing shows the structural models of the calendar according to the invention and shows:

Figure 1 is a side view of a design model of a calender with a unilateral pressure load, in which the rollers in their working position are arranged in a common plane;

Figure 2 shows a calender in which the lowerable rollers in their working position are in a second common plane below the plane of the non-lowerable rollers;

Figure 3 is a side view on an enlarged scale of three roller bearings with respect to Figures 1 and 2;

Figure 4 Calenders with double sided pressure load.

According to the invention the calender is double-arrow 1 to the horizontal plane displaceable cantly controlled, non-fold-down rolls 2, aiaslaskettavat the rollers 3 and the y-lemmät taittovalssit 4 and the lower taittovalssit 5. In the drawing, shown at the left roller 6 is made of a solid lähtövalssiksi, the end roller 7 of the two cylinder-piston units 9 under the influence of horizontal piston rods 8.

5 58957

In the solution shown in Figure 1, the non-lowerable rollers 2 and the lowerable rollers 3 are in their working position in a common horizontal plane. Alaslasket the rolls 3 are as rolls 2, 1 in the direction of the double arrow horizontally movable. Therefore, when the compression is transferred by means of the roller 7 to the entire roll package, a uniformly adjustable uniform line pressure is created in the roller gaps between the individual adjacent rollers by means of a cylinder-blade piston device 9. The friction of the roller bearings has decreased to a low value primarily due to the formation of rolling friction in the roller bearings.

As can be seen from Fig. 1, in the solution shown therein, the upper folding rollers 4 of the calendar are at the height of the lowering rollers 3, the lower folding rollers 5 being arranged at the height of the non-lowering rollers 2. Thus, the lowered rollers 3 are allowed a way down as described below.

In the solution of Figure 2, the non-lowering rollers 2 are in a common plane E and are horizontally displaceable, the lowering rollers 3 being arranged in their working position in a slightly lower plane B. This solution has when lowering the rollers 3, the intermediate space formed between the adjacent rollers 2 and 3 increases, especially in the initial stage of lowering the rollers 2 faster than the corresponding intermediate space in the solution model according to Fig. 1. In addition, it is possible to achieve even finer pressure control to the extent that the pressure caused by the cylinder-piston device 9 by changing the pressure of the rollers 3 against the rollers 2 can additionally be varied.

Figure 3 shows the bearing frames 10, 10a, 10b of three adjacent rollers 11, 12, 13, of which rollers 11 and 13 are lowerable rollers. In a known manner, the bearing frames 10-10b are not guided in the direction of the arrows 14 in the horizontal guide 15 by means of roller bearings shown in the figure.

For the replacement of the rollers, the bearing frames 10 to 10b are provided with blocks 21 through which a screw 22 is inserted, with which the set nuts 23 can be adjusted longitudinally. The setting of the nuts 23 by the screw takes place in the same way as in the vertical calendars in the known through-hanging screws.

Figure 4 shows a solution model in which each end of a roll package has a system

Claims (8)

58957 a cylindrical piston device 25, 26. This has the advantage that the self-elasticity of the elastic rollers can affect the transfer plane of the rollers in both directions, te. both outer roller slots open simultaneously, then both nearest roller slots, etc. - The solution described in Figure 4 has one of two bearing frames 30, 31 loaded by a cylinder-piston device and adjustable in the direction of the double arrows 32, 33 guided between it and the first roller 34 against a response of 36 or 37. It can be seen from Figures 1, 3 and 4 that the calender body does not need a strong dimensioned reason that the forces and vibrations present are conducted to the substrate. A flat, plate-like cover 40 is shown as a muffler (Figure 4). The lowering of the rollers 3 and the folding rollers 4 can take place simultaneously, as well as the folding rollers 4, 5 of all the rollers are attached to the movable bearing frames. In this case, the folding rollers 4 can be lowered to such an extent that the beginning of the goods track can be passed horizontally through the non-lowerable rollers 2 and the folding rollers 4. The phrase "substantially horizontally" is to be understood as meaning that the calendar is at an angle of 0 to 20 ° to the horizontal and that the lowering movement of the other roller takes place perpendicular to the common working plane of the rollers or both rows of rollers. A paper calender, in particular a polishing and satin calender with flexible rollers, in which a plurality of paired rollers (2, 3) with their bearings are guided substantially horizontally in the calender body, at least one of the last two rollers being a compression-loaded cylinder-piston device characterized in that some of the rollers can be lowered from their position where they are in contact with the non-lowerable local rollers (2) via the goods track, forming an intermediate space with respect to these local rollers. Calendar according to Claim 1, characterized in that the non-lowering rollers (2) are guided horizontally displaceably in a common plane (E) and the lowering rollers (3) are in their working position in another common, lower plane (B). Calendar according to Claim 1 or 2, characterized in that the bearings of the 7 58957 lowering rollers (3) can be adjusted horizontally and vertically separately or together. Calendar according to one of Claims 1 to 3, characterized in that the last rollers (6, 7) of the roll package are not countable. Calendar according to one of Claims 1 to 4, with two rows of folding rollers parallel to the calender rolls, characterized in that the folding rollers (4) at the height of the lowerable calender rolls (3) are above these calender rolls. Calender according to one of Claims 1 to 5, characterized in that the raised folding rollers (4) can be adjusted in height separately or together. Calender according to one of Claims 1 to 6, characterized in that the bearing frames (10 to 10b) are guided by rollers on a substantially horizontal base. Calender according to one of Claims 1 to 7, characterized in that a cylinder-piston device (25, 26) is arranged at each end of the roll package and that both devices can be loaded or lightened simultaneously.