DE7007841U - CARRYING DRUM ROLLER FOR WINDING TRACKS. - Google Patents

Description

ap / A 3003 J.M. Voith GmbH Γ "

Keyword: "Vlieswickler" Heideriheim (Brenz)

Drum reel device for winding Viaren webs

The invention relates to a Tragtromrne 1 roll apparatus for winding of material webs, with a support drum, two levers arranged on the two end faces of the support drum, the are pivotable about an axis of rotation located in the area of the drum axis and parallel to it, and fork-shaped ends have to accommodate the pins of a winding roller (pre-roll lever), furthermore with two further levers to take over the winding roller with the started web section (overhead lifting # I) and with a device for cutting the web when changing a full for an empty winding roller (cutting device).

In known drum reels (e.g. Voith brochure no.1736), the web to be wound is carried over the upper area of the xr & gxr © mineiuffifänges and through the nip between the carrier drum and the winding roller on the winding roller. In the normal operating position, the winding roller rests with its journals or with its bearing bushes on approximately horizontal runways, the transfer levers engaging the journals or the bearing bushes of the winding roll and pressing the continuously growing roll against the shell of the drum. A completely wound roll is moved away from the carrier drum by the takeover lever and ejected at the outer end of the roller conveyor.

During the Aniwieke process is in the above-mentioned, first approximately vertically upwardly extending forward roll lever pair an empty winding roller in standby position; these

does not touch the drum nooh. Changing the full against the empty winding roller takes place in that first the pre-roll lever pair in the web running direction at an angle is pivoted downwards by about 20 - 50 ° (roll change position). Due to the eccentric mounting of the roll lever opposite the carrier drum, the empty winding roller comes in this position with the material web running over the carrier drum in contact and is set in rotation by circumferential friction, or beforehand with the help of a throwing device. so the material web - if it is a paper web in Area between the finished roll and the empty winding roller from the side by means of a compressed air jet «- separates; the following web section is grasped by the empty winding roller and is now wound up by this. That Paper webs can also be severed by first moving the finished roll away from the drum and the train running from the drum to the Holle from below Ober the entire width of the web with several compressed air jets to one forms a loop leading upwards; this is then picked up by the empty winding roller, with the web tearing off.

In the manufacture of cardboard, which is usually not severed by compressed air . can be formed into a loop, a so-called hoop line is used. This can, for example, be fastened at one end to one of the end faces of the new winding roller in the standby position and stretched across the machine in the inlet area of the support drum underneath the cardboard web. When the winding roller V7 starts to rotate, the ripcord is wound up spirally on it; it presses through the cardboard web and guides it onto the winding roller.

In all cases, the Roilenweehselvorgang is finally ended by the fact that the transfer lever pair after ejection the finished role is taken over by the new role from the "Vorrollhebe! couple"; the latter is about this further downwards

horizontal position swiveled (transfer position). Finally leads the pair of rolling levers is returned to the ready position.

These methods of severing the web when changing rolls are widely used in paper and board machines with drum pulleys spread and have proven themselves. However, they fail when particularly tear-resistant material webs, such as fleece, textile or plastic film webs are to be wound up with drum trolleys. So up to now one had to wind up such ¥ arenbahrlen make sure to use the drum trolleys and instead other Wicke! devices with axle-driven Use winding rollers. With such winding devices it is known to cut through the web a cutting device or, if it is an easily meltable material, a heatable one Wire to use.

It is the object of the present invention to provide the known drum reel apparatus to be further developed in such a way that they are also suitable for winding up particularly tear-resistant material webs.

This object is achieved in the case of the Tragtroinnieiroiiapparat described above in that the separating device, as known per se, has an xresnelesent (wire, hot wire, knife or the like) extending transversely to the web and that the separating element is arranged and guided in such a way that that it can be inserted into the space that forms between these two when a finished roll is moved away from the support drum.
i

For reasons of space, it will mostly be necessary to use the separating element indent from below into the space mentioned .. To allow the following web section to be fed onto the empty roller! To facilitate, it is also useful to make the severing as close as possible to this winding roller and therefore the separating element along the jacket of the support drum in less Distance from this lead upwards. In further development

According to the invention, it is therefore proposed that the separating element be attached to pivot levers which rotate around an axis in the region of the support drum are arranged pivotably parallel to this lying axis of rotation.

In the case of webs of fusible material, e.g. plastic foils or non-woven fabrics made of synthetic fibers, this is used the separating element is preferably iron heating area Brah * (Hot wire). This is done shortly before the start of the roll change process electrically heated and is then able to penetrate even very thick material webs without difficulty. at other tear-resistant material webs, especially in the case of relatively thin and non-meltable material, can also be used a preferably saw-like serrated knife can be used ".

£ s ^ is often necessary in Tragtroisael roller devices, by: i the carrier drum by means of a scraper depend permanent fiber stfernen j "material oa & F 3G" 5tige impurities ". For this purpose, it is proposed - in a further embodiment of the invention - to design a separating essence consisting essentially of a knife with a straight cutting edge, in the disengaged operating position, so that it can be applied as a scraper to the support drum. Am such

The knife thus mainly serves as a scraper blade {only during the

"* ~» ■> - ■ »ι ■« - - jiuAvmiigaE becomes ss briefly from ümf Tragtrominel

J. lifted off and, as explained above, to cut through the web

X used. This is a particularly economic training of the

% Subject matter of the invention.

4 In a further advantageous embodiment of the drum rollappa · »

At the & enneinrichtung I rates is a well-known, transversal

I arranged to the web extending compressed air blower pipe. This press

ft air blower tube thus swivels together with the fuel element into the

[| Gap between the drum and the finished roll, whereby

If- after cutting the web, it is necessary to run the new web-

ί section on the empty winding roller much more effectively

I can support it as a fixed pre-air blowpipe.

'07841-9.9.71

To move the separating device into the space mentioned and back again - like moving the advance and pressure levers - Separate hydraulic, pneumatic or -electrical switching elements can be provided; all movement processes can be used here can be controlled by a sequential circuit. However, it is particularly advantageous in a further embodiment of the invention to mechanically couple the separating device to the pre-roll levers; that is, the separating device must usually close exactly are engaged at the point in time when the pair of pre-roll levers swivels from the standby position into the roll change position (first movement phase). In this way, separate switching cylinders and the associated control devices for the separating device can be saved will.

As already mentioned, it is usually necessary that Treraaeinrieh- \ tung from below into said space indent. In this case, therefore% the movements of the separator and · the Vorrollhebelpaares in the first movement phase must run in opposite directions. In a further embodiment of the invention, therefore, when the separating element is attached to pivoting \

lever - the swivel lever swivel around the axis of rotation of the pre-roll lever »

I stored bar; in addition, the swivel f Lever in with the pre-roll levers in the area of each pre-roll lever Planetary gear set is provided, each with a pivot lever assigned to it External gear, an internal gear arranged on the roll lever and a planetary gear, which is in a planet carrier stored is.t, this planet carrier by a releasable bolt, a brake or the like. lockable on the machine frame is. When the bolt is in place, the desired movement in the opposite direction of the separating device relative to the pre-roll levers is achieved. The gear ratio of the planetary gear set is appropriate chosen so that the angular velocity of the separator is greater than the angular speed of the roll lever during the first phase of movement. The ratio is preferably these speeds 2: 1. During the second phase of movement of the roll lever from the roll change position to the approx

; Τ ^: 6 4 \. '

The separation device is close to the horizontal transfer division down towards their starting position. Here, the roll lever and the separating device must be move in the same direction of rotation, which can be achieved by simply releasing the said latch or the brake. Thereafter the swiveling back of the roll lever into the vertical starting position takes place, with the separating device again should reach their starting position. The required opposite movement of the separating device with respect to the pre-roll lever is achieved by re-applying the bolt or the brake. Thus, the entire sequence of movements can be very simple catfish controlled & grounded.

Embodiments of the invention are based on the following described in a drawing. In it shows

Fig.l a Tragtroaimelrollapparat in side view, whose separating device has a hot wire and separate switching cylinder, in Rollewechselstel development during cutting of the web;

Flg.2 a drum reel apparatus according to Fig.l in partial view, whose separating device additionally has a compressed air blow pipe;

3 shows a drum reel apparatus according to FIG Partial view, the separating device of which has a knife which is also used as a scraper is during the WiekelVorganges {standby position);

Fig. 4 shows the drum reel apparatus according to Fig. 5 * in the roll change position, while cutting the web;

Figo shows a roll lever of a compared to Fig.l to modified drum rolling apparatus, with one with the cutting device mechanically coupled to the roll lever, in standby position, in section Line V-V of Figure 9;

Flg = 6 the Yorroll lever according to Figure 5 in RoIlenkachse1 position;

Fig.7 the yorroll lever according to Fig.5 in the transfer positionj

FIG. 8 the YonOll lever according to FIG. 5 on the way back from the Handover to Bereltschaftsstelluag;

9 shows a cross section along line IX-IX of FIG.

Fig.IG the S3itenansleht one of the pivot levers for Separating device according to Fig. 5;

11 shows a section through the planet carrier to the separating device, according to line V-Y of the FIg. 9.

The Tragtroramel 12 of the Tragtronanelrollapparates shown in Fig.l is mounted on both sides in one bearing housing 13 each and is driven by drive elements not visible in the drawing. The one to be wound up, for example, made of easily meltable material Fiber material best nonwoven web 14 is in the direction of

: ₉ arrow P guided over a guide roller 15 and over the support drum 12 and wound onto a winding roller 16 * The bearing bushes 17 of the winding roller 16 rest on both sides on a horizontal roller conveyor 18 each. Bearing housings I3 and runways 13 are mounted on uprights 20 »21. Below the runways 18 a pair of fork-shaped levers (transfer levers 23) are placed in two bearing blocks 22.

which are actuated by shift cylinders 24. During the winding up, the transfer lever 23 grip the bearing bushes 17 the winding roller 16 and press it with the roller against the support drum 12. In the operating position shown in Fig.l If the takeover levers 23 have a finished roll 25 wound onto the winding roller 16, they are already part of the support drum 12 moved away to initiate the roll change process *

On the two end faces of the support drum 12 are two further fork-shaped levers operated by switching cylinders 3I (pre-roll levers 30) arranged. (These are not shown in FIGS. 2 to 4). The roll lever 30 are on the bearing housing 13 by one eccentric to the drum axis, namely with respect to the

drum axis horizontally displaced against the web direction of rotation pivot axis. During the winding up of the nonwoven web The pre-roll levers 30 extend vertically upward onto the winding roller 16 and hold an empty winding roller 116 in readiness (Division of readiness, in Pig. 1 by dash-dotted lines Lines shown).

In addition, a device for severing the web is at Change of a full for an empty winding roller provided, with two mounted on the two end faces of the support drum 12 and 'by switching cylinder 34 actuated pivot levers 32, between a hot wire 33 extending transversely to the direction of travel of the web is stretched as a separating element.

To change the full against the empty winding roller, the swivel Roll lever 30 - simultaneously with the departure of the finished Roll 25 from the support drum 12 - initially in the direction of travel of the web by approx. 45 to the roll change position (Fig.l). Here comes the empty winding roller 116 with the one running over the support drum 12 Nonwoven web in contact and is retfitioned by circumferential friction offset. At the same time, the pivoting levers 32 belonging to the separating device with the previously heated hot wire 33 are removed from the The starting position shown in dash-dotted lines is pivoted upwards, with the hot wire severing the nonwoven web. Included the initial part of the subsequent nonwoven web section is captured by the empty winding roller 116, for example, in that this is provided with a double-sided adhesive tape on the circumference; or one guides the beginning of the web by means of compressed air above. In the latter method, it is expedient to have a compressed air blow pipe 39 extending transversely through the trolley apparatus to the To attach swivel levers (Flg.2). The further course of the roll change process corresponds to that of the known drum trolleys. In addition, the separating device only has to be swiveled back into the starting position.

3 and 4 show an embodiment of the invention, in which a knife 63 is used as a separating element. This

70078A1-9.9.71

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has a straight cutting edge and is pivotably mounted on the pivot levers 62 so that it can also serve as a scraper for cleaning the outer surface of the support drum 12. For this purpose, the knife 63 is fastened to an angle profile rod 64 which also carries a compressed air blower pipe 39. At the two ends of the angle profile rod 64 pivot pins 65 are provided, which are mounted in corresponding bores of the pivot lever 62. Shift cylinders 66 press the knife 63 against the support drum 12 during the rocking process (FIG. 3) and bring it into the position required for cutting the web during the roll change (FIG. 4). \

In contrast to the exemplary embodiment shown in FIGS. 3 and 4, the separating device can also be toothed in the manner of a saw Have knives. In this case the knife is rigidly attached to the pivot lever and cannot be used as a scraper at the same time will.

In the construction shown in FIGS. 11 through 11, the pivot levers 42 with the hot wire 33 are not -cylinder operated, but it sisä by means of a planetary gear set, mechanically coupled to the pre-roll levers 30. Either of the two Bearing housing 13 is for this purpose only 1 «mg provided on the support drum 12 extending bearing neck 43 on which a planet carrier 40 is rotatably arranged. In the bearing neck 43, a snap bolt 44 is embedded on the circumference, which completely The bearing surface of the planet carrier can be lowered into the bearing neck 40 has two grooves 45, 46 (Fig. 11) into which the snap lock 44 can engage by means of spring force, as a result of which the planet carrier 40 is locked on the bearing neck 43.

In two radial webs 47 of the planet carrier 40 is a pair different diameters having planet gears 50, 5I mounted. The planet carrier 40 is located between these webs 47 a concentric outer bearing surface 48 is provided; on this is

one of the pivot levers 42 of the separating device is supported. The pivot lever 42 has a meshing with the larger plate wheel 5I External ring gear 52 on. In addition, an internal ring gear meshing with the smaller planet gear 50 is located on the roll lever 30 53 arranged.

The bearing surface of the Sohw "nkhefee Ib 42 has two switching cams 55 _# 56 (FIG. 10), which protrude through a corresponding slot in the planet carrier 40 inward and, in certain positions of the pivot lever 42, lower the latch 44 into the bearing neck 43, whereby the locking of the planet carrier 40 on the bearing neck 43 can be released.

In the standby position (FIG. 5) the pre-roll lever 30 extends vertically upwards and the pivot lever 42 of the separating device extends vertically downwards. Here, the Sehnappriegel 44 is locked into the groove 45 of the planet carrier, whereby this is locked on the bearing neck 43. At downstroke of Vorrollhebels 30 to about 45 ⁰ to the reel change position (Figure 6), the pivot lever 42 is pivoted upward. The diameter ratios of the planetary gears 50, 51 and the ring gears 52, 53 are chosen so that a total gear ratio of about 1 1 2 results, * L »* d # ^ the pivoting lever is adjusted by about double the angle compared to the roll lever; so it is now in an approximately horizontal position. When this operating position is reached, the switching cam 55 of the pivot lever 42 unlocks the locking of the planetary carrier 40 in the bearing neck 43 by sunking the latch 44- into the bearing neck.

When the pre-roll lever 30 is pivoted further, again by approx. 45 °, from the roll change position to the transfer position (FIG. 7), the stop 58 provided on the internal gear ring 53 of the pre-roll lever 30 guides the planet carrier 40 and thus also the pivot lever 42 downwards. On reaching this position the ■ <% latch 44 snaps into the groove 46 of the planet carrier and locks it again on the bearing neck 43. On the way back the Vorrollhebels 30

IJl "I

from the transfer position to the standby position is thus the pivot lever 42 initially in the opposite direction pivoted back further, namely by approx. 90 ° (Fig.8); here he unlocks the lock again, in this case by means of the Switching cam 56. Now the planet carrier 40 and with him the pivot lever 42 through the stop 59 of the pre-roll lever returned to the starting position (Fig. 5).

In the above-described exemplary embodiments of the invention, the winding roller 16 is always passed through from the support tray 12 Circumferential friction driven. However, the invention can of course also be applied when the drum trolley apparatus an additional drive device (e.g. a so-called electric winder) which is attached to the axis of the winding roller 16 attacks.

Heidenheim, March 2nd, 1997
Sh / Rä

Claims (6)

ap / A 3OO3 2) Password: "Vlieswickler" gns check 1. Carrying drum roller apparatus for winding up webs of material, with a carrying drum, two levers arranged on the two end faces of the carrying drum, which can be pivoted about an axis of rotation in the area of the carrier drum axis and parallel to this and have fork-shaped ends to accommodate the pins of a winding roller (Pre-roll lever), furthermore with two further levers for taking over the winding roller with the started web roll and with a device for cutting the web when changing a full for an empty winding roller (separating device), characterized in that the separating device, as known per se, a transversely to the web extending separating element (Draiit, hot wire, knife or the like.) (33 * 63) and that the separating element (33 , 63) is arranged in such a way and s is guided that it is formed in the when a finished hulk (25) is moved away from the support drum (12) between these two Space is indentable. " 2. Apparatus according to claim 1, characterized in that the separating element (33, 63) is attached to pivot levers (32, 42, 62) which is arranged to be pivotable about an axis of rotation lying parallel to this in the region of the carrier tube are. ^a 7007841-9.9.71 I. - • 2 - 3. Device according to claim 1 or 2, characterized in that that one consisting of a knife {63) with a straight cutting edge separating element in the disengaged operating position as Scraper is designed to be able to be placed on the support drum (12). 4. Device according to one of claims 1 to 3, characterized in that a per se known, Prefabricated air blowing tube extending across the web (39) is arranged. 5. Device according to one of claims 1 to 4, characterized marked that the separating device with the pre-roll levers (30) is mechanically coupled. 6. Device according to claims 2 and 5, characterized in that that the pivot lever (42) about the axis of rotation of the roll lever , i A (30) are pivotably mounted and therefor for mechanical coupling ^: 'i development of the pivot levers (42) with the pre-roll levers (30) io loading; - 5th Rich in each pre-roll lever (30) a flange gear set is provided, each with an external gear rim (52) assigned to the pivot lever (42), an ^{internal gear rim (53) arranged on the Vorro ^ lever ("5O 1} I) and a planetary gear (50, 51), which Is mounted in a planet carrier (40), the planet carrier being lockable on the machine frame by a releasable bolt (44), a brake or the like. Heidenheim, March 2, 1970