DE2110141A1 - Device for handling paper tracks - Google Patents

Description

Patent Attorneys ■ ..:. · * - * _ft * / _Λ

DipL-tng. A. Grünecker '£ | | UI 4 I

Dr.-lng. H. Ki ::!: R'd y \

ΰ: .-! ιψ. W. Si-jd: m-vr .

β Munich 22. SV / ax-rni, Uir.tir. 43 3 MARS 197 ^

ZERAND COEPOEATION

15800 West Overland Drive, New Berlin, Wisconsin, USA

P 3809

Device for handling paper webs

The invention relates to a device for handling a paper web. ■

Compression presses for the production of cardboard parts work in jerks. A paper web is therefore also fed to such compression molding presses in accordance with the intermittent processing method. As a result, the paper web must be started and started on the entry side of the press.

108839 / 01SS

to feed successive lengths of paper web to the press. Treatment devices located at the entry side of the cress usually consist of a set of measuring rollers which continuously act on the paper web in order to be able to precisely feed the paper web at a measured speed. After the paper web has run through the measuring rollers, it arrives at a braking device which holds the paper web at regular intervals to stop the conveying movement. Thereupon the Paoier- "b & fcn passes between alternately actuatable feed modes j which act at regular intervals on the paper web and feed a length of the same to the press. Continue the paper web. When the braking device · releases the paper web again; act the Vorsehubwalaen again on the BdIa ₅ the loop is pulled off and the papicrbah: * ;: is again under tension,

Siu'l · iar-like Yorriolitung for treating eggs

BAD ORJGiNAL

ίο

sis 9 / 01ss

Paper web is dealt with, for example, in U.S. Patent 3,385-178, which was issued on May 28, 1968 to P, Zernov and is entitled: "Drive device for a cardboard production molding press ". The known system comprises a Vorriehtung for handling a paper web at the entry side of the press »whereby the device enables the formation of a free loop on the exit side of the measuring rollers. If the loop formed in this device by the action of the intermittently operating feed rollers pulled out we-ü. or snaps out, will the loop tightened ^ it snaps against certain Share dej? Device and makes a noise, a fall or a violent noise dull thud, which because of the successful start-up time 'to a misregistration or misfunding more precise lengths of the paper web leads *

The object of the invention is therefore to create a device for handling paper webs, in which a strong folding or flapping of the loop is avoided when it passes through the feed rollers is deducted and for which a greater © start-up time is provided in the movement circle ifct

0983S / 0199

This object is achieved according to the invention by that a set of measuring rollers is provided for the paper web, that a pair of temporarily intermittent There is feed rollers that a braking device between the measuring and feed rollers is provided and is movable between paper web holding and release positions, one paper web like-Ii passing through the measuring rollers is repeatedly interpreted in a loop, which is then pulled out that an adjustable Vibrator is provided on the ejection side of the measuring rollers for setting the loop that a Means for time-dependent displacement of the oscillator with the loop is provided, wherein when pulling out the loop, it is relatively precisely balanced with the transducer Speed and one in the tracks *; directed movement can be brought about before sighting.

A preferred embodiment of the invention is explained in more detail below with reference to the drawing. It shows:

2? Ig. 1 is a vertical section through the

device according to the invention, fig. Figure 2 is a view taken along line 2-2 . in Fig. 1,

BATH ORIGINAL

109839/0198

FIG. 3 is a view similar to that in FIG

Fig. 1, but showing the paper web in the position for loop formation,

.Fig._ 4- a view similar to that in Fig. 3, the transducer in contact showing with the loop when he moves - as shown - to the left,

5 shows a graph showing the position of the transducer and the loop in relation to the degree representing the eccentric rotation of the device, and

6 shows a schematic overview of various Positions of the swinging egg.

The device shown in FIG. 1 corresponds in many respects to that in US Pat. No. 3,385,1-8 device shown, The device consists of two heavy lateral supports. 1 and

2, which are made of heavy plate and form the frame of the machine. A set of measuring rollers

3, 4- and 12 is arranged in the frame. The roller 5 is corresponding to that in US Pat. No. 3,385,178 mentioned type driven. In this context

103839/01 p

it suffices to state that these measuring rollers are driven in such a way that they enable the paper web to be conveyed precisely. Furthermore, a pair of alternately operable feed rollers 5 and 6 are in the? Machine provided. As shown in FIG. 1, the feed rollers are in contact with one another to such an extent that a roller gap is formed in order to convey the paper web into the press P. Both the press P and the device sum alternating opening and closing of the feed orphans are conventional; it therefore does not seem necessary to describe them in one place ^ Wesa, however, further details of the press CC- <bv ^Γ 1ί * ,? Drive means of the feed rollers require a more detailed explanation »so reference is made to US-PS 3,385" 1? 8 «

Ä-. imTisa? a braking device is arranged in the frame., the ο us a fixed upper part 7 uad elEer Ma- and. moveable aa. Brake rod 8

öestc kOe, you braking device is t in Fig Ί inclined in ge3ffelter collar .. Wemi the Bremseinjii-sli'iiiiE-v. gwaclilossai; is, in general 4; Lg "Jorsehubwalzon 5 and 6 open; in mngekshr = - '&& £ ■ manner the braking device is open, r ^ enn

O 3 8 3 9/01 9 9 bad

2110U1

the feed rollers 5 and 6 for conveying the paper web are closed. The device for periodically opening the braking device is also treated in U.S. TB 3,385 1--8. Here it should be noted that the gears for the feed rollers 5 and 6 as well as for the brake rod 8 from the eccentric shaft arranged on the machine 10 can be operated. With regard to the functioning of the braking device, it is sufficient to state that the brake rod 8 to open and close the braking device in regular Distances in the vertical direction and as a function of time to & ■ _,;. Feed rollers 5 and is moved.

A guide plate 14- is provided on the entry side of the measuring rollers to the paper web in to introduce the measuring rollers.

In operation, the measuring rollers continuously promote the paper web, whereas the feed rollers 5 and promote the same only in paragraphs. As a result, a loop L is created between "the roller pairs (Fig. 3) formed whenever the feed roller !! open (i.e. not conveying) and the brake application

109839/0199

direction are closed to. to set the | paper path. When the braking device is open and the feed rollers engage, they pull the loop of the paper web quickly out. This abrupt movement of the paper web is however, incorrectly shifting exact lengths of the paper web at high speeds caused.

According to the invention, a movable oscillator 15 is provided in order to be moved as a function of time on the arrangement and on the pulling out of the paper web. The transducer has the shape of a half-round ear. The tube is attached to both ends of a pair of arms 20 which are attached to the hollow shaft 24. The hollow shaft 24 eats in the purpose corresponding roller bearings 25 (Fig. 2) mounted in the side supports 1 and 2 and can swing back and forth to the oscillator 15 between the positions shown in FIGS. 1 and 4 and in timing with the loop to swing the paper web back and forth as the loop is formed and pulled out. At the central portion of the hollow shaft 24 is ^; a leg 30 firmly attached. The leg 30

109839/0199

_ ₉ _ 21TÖU1

is driven clockwise by means of a pivotable member 32 moved by an eccentric, like Pig. 1 can be seen. The link 32 is pivotably mounted at 33. An adjustable Link 34- is between the leg 30 and the pivotable link J2 in any one arranged by a number of adjustable positions by inserting in any a pair of associated recesses 35 » which are formed in the arm 30 and the pivotable member 32. The arrangement of the link 34- determines the amount of the grant, i.e. the extent of the oscillating movement of the oscillator determines the length of the inlet through the measuring rollers 3 and 4 fed paper web. The pivotable member 32 swings about the bearing pin 33 Action of the eccentric 36, which by means of the eccentric shaft 10 is rotatably arranged. The eccentric transmits the oscillating movement via the secondary wheel 37 and the steering rod 38 assigned to it on the pivotable member 32. The secondary thread is on a bracket 40 attached to the frame at 41 is rotatably mounted.

The hollow shaft 24 · is made by one of a pair

V09839 / 0199

of pneumatic cylinders 43 existing device in the counterclockwise position returned (Fig. 1). From the air cylinders each one is arranged near the end of the hollow shaft 24 (Fig. 2). A compressed air space 44 is provided for the two compressed air cylinders 43 and acts on the diaphragm 45 of the cylinder 43 to move the plungers 46. The elongated one Compressed air space 44 running transversely to the paper web thus acts as a pressure accumulator, so that a rapid and positive unilateral preloading of the hollow shaft 24 by the compressed air cylinder 43 is provided is. The one-sided biasing is because of the relatively large amount of accumulator in the Compressed air space 44 and the action on the membrane 45 of each compressed air cylinder 43 without any Loss of movement or accomplished without any delay.

As mentioned, the eccentric 36 is of the same Eccentric shaft 10 driven, the similar not shown - eccentric for actuating the Feed rollers 5 and 6 and the brake rod 8 drives. These drive means are mentioned in the above US-PB 3 385 17S dealt with in detail.

109039/0199

2118141

The feed rollers, the braking device and the oscillator are all precisely time-dependent moved with the formation and withdrawal of the paper web, as described below will. - ·

In Fig. 1, the transducer 15 is in its outermost shown on the left. The paper web is taut by the movement of the feed rollers 5 and 6 by fa

the transducer has been pulled. The feed rollers slide and the braking device 7 »8 is open. This position of the transducer is referred to as position A, i.e. it relates to the drawing this is the extreme left position.

As shown in FIG. 5, the transducer has been moved almost to its rightmost position, which will be referred to as position B. Just 4ä

when the vibrator moves to the rightmost position, the feed rollers 5 and 6 close and the braking device is opened. When the transducer is in its position shown in FIG Position is, the loop L of the paper web is far to the right of the oscillator formed, or in other words is the

109839/0199

The displacement of the paper web is considerably more than the displacement of the oscillator out of it original position.

In "Fig.- ~ 4- the oscillator is shown during its movement to the left. The paper web, the is pulled through the closed feed rollers 5 and 6, is just in with the oscillator Intervention. At this point, the "-" position D, the speed of the moving paper web corresponds approximately to the speed of the transducer, thereby reducing the

Noise and clapping is achieved.

In Fig. 6 the positions of the vibrator considered are indicated by the letters A, B, C, D and E. indicated. The position C denotes that position of the oscillator in which it is from the left moved to the right and at what point the feed rollers 5 and 6 close. The position E refers to the position in which the transducer moves from left to right and in which the braking device closes. As previously indicated, the position C designates that Position in which the feed rollers close,

109839/0139

2110U1

■ when the transducer moves from left to right emotional; position A. is the extreme left position and position B is the extreme right Position of the transducer *

In successive positions of the transducer are the following: From the starting position A (Pig, i) the transducer moves to the right in the position C, in which the feed rollers JQ

close, and from which the transducer moves into position B, that is the extreme right position, 'moved on (Fig. 3). The Schwinger then returns its direction of movement and moves to position D (Fig. 4), in which the loop L den Swinger 15 catches up. The position D is the position in which both, the transducer and the loop, at practically the same speed move towards each other. When the transducer has reached position A (Pig. 1), it is the extreme left position has been reached «The transducer then reverses its direction again and begins its movement to the right. Here-r-on the transducer reaches the position E, in which the braking device is closes, and continues its rightward movement to position 0. Of the

1Q9339 / Q19 *

'The cycle continues in the manner explained.

In Fig. 5, the vertical axis shows the displacement both. of the oscillator 15 and the

Inch or

Loop L internally. It is noted that the loop compared to the transducer is shifted by twice the length because the loop two, the transducer Has enclosing sides. The curve 50 represents the displacement of the oscillator 15, the corresponds to the particular setting of the connecting member 34 shown in FIG. The positions A, B, C, D and E are also indicated on curve 50. The position B, which is at the top of the Curve is reached, represents the rightmost position of the transducer and corresponds to the upper one Dead center of the eccentric 36. The point 52. gives the maximum repeatable length, that is 91 * 4 cm, the paper web guided through the device

again; It lies on an ordinate 53 »which corresponds to the point at which the feed rollers are located conclude. The point 54 indicates the point which the feed rollers move the paper web out to come into contact with the oscillator, if the transducer corresponds to the division A

109839/0199

is stationary. The point 5 ^ must therefore be arranged in this way be that the displacement line 55 between points 52 and 54 can be drawn.

The displacement line 55 corresponds to the displacement line the paper web. The slope of the line corresponds to the speed of the paper web. It the aim is to increase the speed of the paper web with the speed corresponding to the oscillator adapt. Accordingly, the intersection of line 55 and curve 50 corresponds to, namely at 56 »the stop point of the paper web the moving transducer. This means that the slopes of the two lines at point 56 fit very closely together, resulting in very little noise or clap between the paper web and your vibrator leads. Expressed differently, give curve 50 the shift of the Schwingers and the line 55 relocate the paper web again, the aim being that Slopes of the two lines and thus the speed curves to adapt to each other. This is it is possible to determine the point of contact of the paper web with the transducer, at which it is almost a have the same speed.

109839/0199

2110U1

The point 52 can - as can be seen from the diagram is - minor: to be moved to the right, because after closing the feed roller ?! 5 and 6 these only need a short period of time to bring the paper web up to speed.

The subject of the invention is an adjustable one and time-dependent Schwinger- between measuring rollers and feed orphans, so that the Loop L can hit the transducer, the in the same direction as the loop that pulled out, moved, being at this point the speeds of the paper web and the oscillator are matched to one another. Through this slapping, noise, and part misalignment are reduced.

■ In addition, when _/: Investing Retirement the brake rod to the paper web at a time when the vibrator from right to left moved, the absolute velocity of the paper web is returned by the brake rod to the minimum, resulting in a greater ^s tetigkeit (Fig. 1) and repeatability of the repeatable or adjustable lengths entered into the device.

Claims BATH ORIGINAL

109839/0199

Claims (1)

Pa teintans prob fli device for handling a paper web, thereby characterized in that a set of measuring rollers (3, 4 and '12) is provided for the paper web (W) is that a pair of intermittent feed rollers (5, 6) is present that a braking device (7,8) between the measuring and feed rollers provided and between the tap holding and release positions can be moved, wherein a paper web passing through the measuring rollers rises again can be laid out in a loop (L), which is then pulled out so that an adjustable Oscillator (15) on the discharge side of the measuring rollers to adjust the loop it is provided that \ a device (30,32,34,36,37,58) to pending displacement of the oscillator with the loop is provided, when pulling out the Loop this with the transducer in a proportionate manner precisely adjusted speed and with one directed in the same direction Movement can be brought. 10983 ^ / 0190 2 * Device according to claim 1, characterized in that the device (30 "32,34,36,57,38) for Moving the oscillator (15) from an adjustable arm (30) for the variable displacement of the The oscillator consists, whereby the device is adapted to various repeatedly adjustable lengths of the Paper web (W) is adaptable, 3. Device according to AnsDruch 2, characterized in that that an eccentric (36) for the time-dependent actuation of the arm (30) with the insertion of the Paper web (W) is provided, 4. Apparatus according to claim 2, characterized in that that compressed air cylinder (43) for pretensioning of the arm (30) against the eccentric (36) and the oscillator (15) are provided in one direction. 5. Apparatus according to claim 4, characterized i that the compressed air cylinder (4-5) to one, itself with respect to the paper web (W) extending transversely Compressed air space (44) are connected and that an adjustable plunger (46) at each end of the Compressed air cylinder is provided and can be acted upon by compressed air for one-sided pretensioning of the arm (30) is. 109839/019 9 2110H1 6. Device for handling a paper web, characterized in that a set of continuously conveying 'measuring rollers (3, -4- and 12) is provided for accurately measuring the speed of the paper web (W), that a pair of temporarily intermittent feed rollers ( 5, 6) on the exit side of the measuring rollers for the alternating conveyance of the paper web is provided that a braking device (7, 8) is arranged between the measuring rollers and feed rollers and can be switched between a paper web holding and release position, the paper web running through the measuring rollers is interpretable in a loop (L) _t when the braking device is in the paper web-holding position that the loop of the paper web is pulled when the temporarily intermittent feed rollers are set promotional and the braking device in the paper Jjj track release position is that an adjustable Oscillator (15) between the measuring rollers and "the braking device to a generally alternating Movement with the loop is arranged that a device (30,32,34,36,37,38) for displacement of the oscillator is provided as a function of time on the movement of the loop, wherein BAD OfHGINAt 109839/0199 when the feed rollers convey the loop of the paper web away, the loop with the oscillator can be brought at a relatively uniformly balanced speed, 7. Apparatus according to claim 6, characterized in that the device (30,32,54,56,37,38) for Moving the oscillator (15) from an adjustable arm (30) for the variable displacement of the The oscillator consists, whereby the device is adapted to various repeatedly adjustable lengths of the Paper web (W) is adaptable. 8. Apparatus according to claim 7, characterized in that an eccentric (36) for time-dependent actuation of the arm (50) is provided with the insertion of the paper web (W). 9. Apparatus according to claim 7 »characterized in that compressed air cylinder (4-3) for biasing of the arm (30) against the eccentric (36) and the oscillator (15) are provided in one direction. 10. The device according to claim 9, characterized in that the compressed air cylinder (43) to one 109839/0199 211ΌΗ1 with respect to the paper web (W) transversely extending compressed air space (4-4 ·) are connected and that an adjustable plunger (4-6) is provided at each end of the air cylinders and through Compressed air for "one-sided pre-soaking of the arm (30) can be acted upon. 109839/0199