DE1262720B - Machine for the uninterrupted winding of a lengthwise cut web - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

B65h

German class: 47 k -5/10

Number: 1262720

File number: M 62108IX c / 47 k

Filing date: August 14, 1964

Opening day: March 7, 1968

For uninterrupted winding of a length-cut web, machines are used in which the individual strips are led apart and thus alternate between two similar ones several, the winding shaft supporting pairs of arms supplied to existing roller stars and during the Wickeins are pressed against a driving support roller with adjustable pressure. At acquaintances Machines of this type have several backup rollers in each star wheel concentric to the star wheel axis stored. Both the backup rollers and the winding shafts, if any, extend This machine covers the entire width of the machine.

It is known that strips cut lengthways from a web have thickness differences can, which have the consequence that when winding between the individual rolls diameter differences develop. Are these roles seated on a common shaft against a common shaft When the support roller is pressed on, the different diameters of the individual rollers cause one different contact pressure, which results in deviations in the winding hardness of the individual rolls and can also result in unusable roles that the strips run laterally.

For alternately winding lengthwise cut strips onto separate ones Winding stations are also known machines in which each individual winding roll is taken up by an arm and rests on a drive drum during winding. However, there is no certain contact pressure generated. In particular, however, allow the known machines of this type no uninterrupted winding, rather, after each roll series has been completed, a It is necessary to shut down the machine for the roll change.

The disadvantages of the known machine are avoided, and an uninterrupted winding of rolls with high quality with automatic sequence of the individual work processes is achieved according to the invention that in each roller star in a known manner several support rollers are mounted concentrically to the roller star axis and that each support roller Also mounted in the roller star pivot axis for several pairs of arms, each carrying a winding roller, of which the individual reeling rollers can be pressed against the associated support roller with a pressure that is uninterrupted within the roller star on each individual arm pair by the printing machine assigned to it Winding up
a lengthwise cut web

Applicant:

Maschinenfabrik Goebel G. mb H.,
6100 Darmstadt, Goebelstr. 21

Named as inventor:

Philipp Weinmann, 6100 Darmstadt;
Franz Held, 6112 Groß-Zimmer

can be generated medium. The per se known arrangement of several support rollers concentric to the roller star axis in every star wheel enables uninterrupted rotation of the star wheel step by step Work. The risk of different winding hardnesses of the individual roles and the risk of bleeding the strip is avoided in that each individual winding roll has its own pair of arms is led and burdened, consists in the fact that is pressed against the support roller by its own pressure medium assigned only to it. Only through the Combination of these features achieves the purpose of the invention.

The arranged according to the invention arm pairs capture the winding shaft or sleeve on both sides, the is thereby perfectly guided in the lateral direction, whereby a perfect winding with smooth End faces of the winding rolls is made possible. Each pair of arms or all supported on a common shaft Pairs of arms are under the action of a spring or a hydraulic or pneumatic one Cylinder, whereby each individual winding roll with adjustable pressure against the supporting roll driving it is pressed.

A major advantage of this arrangement is that each individual winding roll has its own pair of arms is led and burdened, consists in the fact that Deflections. cannot affect the wrapping result of any kind. For example, if If the back-up rolls bend, this will not affect the winding process in any way. That's why support rollers with a small diameter can also be used in relatively wide machines will.

The pairs of arms are expediently axially movable on their pivot axis and controlled in such a way that that they the winding shaft or sleeve on their

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3 4;

Feed point due to their opposing paths early .ihre-storage on the pivot shaft 10 and take up and the finished roll at its output whose storage in the disc 5 is evident. Further position by an opposite axial movement result from this part of A b b. 2 the later release. It is also expedient to use the pivoting devices for the axial movements, which will still be described of the pairs of arms in the radial direction 5 displacement of the arms 11 and their storage in by means of one or more fixed cam disks the disks of the roller star. On the left Od. Like. To control in such a way that the arm pairs of the A b b. 2 are the arms and their control means the winding rolls in front of their delivery point for the sake of clarity and because this part Lift off the back-up roll, then up to the take-up - mainly the storage of the back-up rolls and place the winding shafts or sleeves in raised io whose drive should show, omitted. of course is Remain in position and at this point with the ready- but generally the roller star on its whole holding the winding shaft or core in alignment. Width occupied with the arms mentioned.

For gluing the outermost layer of the finished arms 11, two each form an arm winding roll can be a pair of glue applicators, which are arranged to receive a roll on both sides be, which is determined shortly before separating the web 15 shaft or sleeve. The swivel movement one in the direction of travel behind the windings of the individual shafts 10 are controlled by an am set the new roll located knife on the machine frame fixed curve 12 controlled by on Web applies glue to a point attached in front of the ends of these shafts arms 13, the winding tube held ready for winding is located. their rollers 14 on the cam 12 along-through the same glue applicator can slide 20 unless it is through the structure of the glue can also be applied to the new beginning of the web and lifted off the winding roll. The contact pressure be carried, which is thereby glued to the new winding tube between the individual winding rollers and the support will. The knife for separating the web rolls 7 is in the embodiment springs 15 can be produced outside of the star wheel in the machine frame. This is on each of the arms 11 be pivotally mounted, but one end of such a spring can also be attached, the other several Knife is also pivotally mounted in the roller star res end 16 on a disc 17, of be stored between the support rollers. Of these, those in A b b. 2 only a few are shown. One per Knives only occur in each case that behind the winding point such a disc is for all in the same vertical arranged in action. Pairs of arms lying flat in such a way that

An embodiment of the inventive idea 30 that the spring for one arm on one side

is shown schematically in the drawing. the disc and the one for the other arm on the

A b b. Figure 1 is a cross-section through the machine attached to the other side of the same.

omitting various details; Instead of the springs, for example

A b b. 2 shows two different longitudinal sections, including compressed air cylinders (or other pressure media)

step through the left and right parts of one of the two 35 arms with an approximately radially inward

Load roller stars and> directed force.

Fig. 3 is a cross-section through one of the two The axial movements of the armeil are of

Roll stars. Rods 18 and 19 effected by cams

The web, which comes from a supply roll, 20 and 21 are controlled in the axial direction, between the lower blades 2 and the upper 40 These cam disks are conveniently next to 3 knives into individual strips of roll width along the cam 12 also firmly on the machine cuts. The individual strips run alternately in the frame and, in contrast to this, in to the left and right roller star. The left axial direction is profiled. With the circulation of the Star roller consists of two-sided disks 4 star rollers become rods 18 and 19 and 5, in which evenly distributed several support 45 at certain points after the one or after the rollers 6 are stored. The right star is shifted in a different axial direction. On both bars Way formed and with the support rollers 7 gene carriers 22 and 23 are attached, thus Mistake. Both roller stars are also in the rest of the movements of the rods and follow through on designed in completely the same way, which is why claw-like drivers attached after them in a ring standing only groove one of the two roller stars closer to the arms 11 near their bearing point on the is written. It should be noted, however, that shaft 10 intervenes. The drivers 22 engage follow the bar 18, which differs in the exemplary embodiment, in each case in the left arms of an arm Infeed of the webs to the two pairs of rollers and the drivers 23 in the right arms Stars one in a clockwise direction and that of each pair of arms. For example, if the others must turn in the opposite direction. Infolde- 55 rod 18 to the left and at the same time rod 19 The star rolls are shifted to the right in a mirror-inverted manner, then all the arms move in an arranged manner. pairs opposite each other, d. i.e., they give e.g. B.

The two disks 4 and 5 of the left roll free a winding tube that had been held up until then. At um-

sterns are mounted on the shaft 8, which approach in the inverted mutual movement of the rods

Storage 9 of the machine frame is mounted. In the 60, the pairs of arms meet each other and can thereby

In addition to the support rollers 6, both disks 4 and 5 are provided with a winding tube.

Pivot shafts 10, of which in Fig. 2 the support rollers 6, which are not only used for supporting,

only one is shown. On each of these shafts, but also to drive the winding rollers, the

numerous arms 11 are axially displaceably mounted, each of which is via a gear wheel 24, which is inserted into the inner

but in such a way that it engages the pivoting movements 65 gear 25, driven. In this interior

follow their wave 10. gear engage the gears 26 on the

On the right side of Fig. 2 the arms are attached to the shaft of each support roller. All support

11 can be seen in a longitudinal section, which also results in the rolling of the star wheel at the same time

Claims (1)

5 6 and driven at the same speed. would increase accordingly radially outwards, whereby they The drive of the back-up rollers via an internally under the action of the springs 15, which control the toothed gear has the advantage that cause a pressing pressure. Pivoting the roller star of the web run and taking up new winding cores through the arms Web tension remain practically unchanged. Ins- 5 takes place at the lower exit of the adjacent especially when the pitch circle diameter of the feed channels 35 in which the lowest of Gears 26 the diameter of the support rollers 6 several winding tubes stacked on top of one another is the same and therefore the pitch circle diameter is ready to be taken. of the gear 25 with the diameter of the support The arms 11 are for this purpose of the roll periphery coincides, namely roll io fixed cam 12 so in the radial Richdie Back-up rollers when the roller device is pivoted, so that they stand by as they pass the off the web in such a way that no winding tubes lying between the two are aligned with them. Im equal relative speed arises. At the moment, the two arms of each arm pair can be The pivoting movements of the roller star can through the curves 20, 21 and the rods be carried out continuously or gradually. A step 15 18.19 moves against each other, making them the winding way Movement can grasp between them through a cylinder 27. This entrainment takes place be called, the piston rod of which an arm expediently at the beginning of the movement 28 pivots back and forth. This arm acts on a step that connects the sleeves with the overrunning clutch, the one on the shaft 8 of the roll end in the ready position for the start of winding star is arranged and this only brings in a 20. Direction of rotation takes along, while the shaft and there- As Fig. 3 shows, there is 10 on each shaft with the roller star at the opposite piston a wedge 36 is attached, which extends over the entire length of the Rod movement stops. With such an approach, the shaft extends between the disks 4 and 5, drive, it is appropriate in connection with the He engages in keyways 37 in the hubs of each Roller star to provide a notch that allows the standing 25 Armeil a. However, the keyways are essential it remains wider than the wedges in a very specific position. As a result of the force of the secures. individual arms 11 acting springs put the The operation of the machine is as follows: In keyways with one side face of the keys A b b. 1 the machine is in a working phase on it. As a result, the position of the arms is in the radial direction, in which the winding roll 29 and the other 3 ° device depends on the shape of the cam disk 12, in the drawing behind it rolls almost This is designed so that the arms are wound in their prefabricated. From the following, in the overflow on the channels 35 exactly with the ready-drawing above arms 11, held winding tubes are aligned,
New winding sleeves 30 are pressed against the initially still the common support roller 6 located under the common support roller 6 which is the further rotation of the roller star, the winding rollers 29 cause the winding rollers 29 to taper. the contact of the winding tubes 30 with the web 1. As soon as the winding rolls 29 have their final diameter but once the web has reached these new winding tubes knife, which is wound by a not shown, the widened keyways provided scanning device or a meter counter leave a radial Movement of the arms 11 outward, is determined, opens briefly over each 40 without the roller 14 needing to lift off the curved track strip through a disk 12, also not shown. The arms are in the control device a nozzle 31, from which adhesive consequently is sprayed onto the web during the winding process. Immediately thereafter, the cam plate is independent and only the knife attached to a pivot arm 32 pushes under the influence of the springs 15. This arrangement 33 through the tracks, separates them and goes immediately 45 has the advantage that even with different things, it returns to its starting position . The diameter of the individual winding rolls as a result of the resulting web end, which is often inevitable differences in the thicknesses with adhesive, is drawn in between the support roll 6 and the individual strips to be wound up, each individual winding roll 29, which is thereby glued. Winding roll with one of the neighboring rolls and the beginning of the web 50, which is also provided with adhesive, is pressed against its support roll, with each strip remaining on the new winding core.
30 adhere and then winds up on it. When the winding is complete, the rollers 14 run up As soon as the new winding rolls are sufficiently applied to the raised part of the cam disk 12, with are wound, the roller star is activated by the operator, the wedge 36 and again on the arms speed of the compressed air in the cylinder 27 to a support 55 the finished winding rolls from their support rollers a little roller graduation turned further, lifts off in the exemplary embodiment. The arms remain in this radial position so by 60 °. During this rotation, expediently after the delivery of the winding roll and during further Usually before the end of the same, the sticks are turning the roller star until the rollers gen 18 and 19 of those arms that bring the finished roll 14 back to the mean diameter of the curve 29 hold, axially displaced in such a way that 60 disc 12 run up,
open the pairs of arms and release the winding rolls, which then on an inclined surface 34 to a for- claims:
the device from which it rolls out of the machine be led out. The new winding rolls are 1. Machine for uninterrupted winding which is now wound at the earlier point of the winding roll 65 of a lengthwise cut web, whose one 29 and, driven by the support roller, wind individual strips apart and thereby more and more on. The arms 11 pivot, alternating two similar, from several, of which they are held, the diameter - the winding shafts supporting pairs of arms - fed to the roller stars and during winding with adjustable pressure against a driving one Support roll are pressed, characterized in that in each roller star several support rollers (6 or 7) mounted concentrically to the roller star axis (8) in a known manner are and that each support roller has a pivot axis (10) also mounted in the roller star for several pairs of arms (11), each carrying a winding roll, of which the individual winding rollers (29) can be pressed against the associated support roller (6, 7) with a pressure are that within the roller star on each individual pair of arms (11) by its assigned Pressure medium can be generated. 2. Machine according to claim 1, characterized in that each pair of arms or all pairs of arms (11) mounted on a common shaft (10) are under the action of a spring (15) or a hydraulic or pneumatic cylinder. 3. Machine according to claim 1 or 2, characterized in that the pairs of arms (11) on their pivot axis (10) are axially movable and controlled in such a way that they take up the winding shaft or sleeve at its feed point by moving against each other and the finished roll release at their delivery point by an opposite axial movement. 4. Machine according to claim 1, 2 or 3, characterized by the control of the pivoting movements of the arm pairs (11) by means of one or more fixed cam disks (12) or the like in such a way that the pairs of arms remove the winding rolls from their support roll (6, 7) in front of their delivery point lift off, then up to the pick-up point for the winding shafts or tubes in the lifted position stay and align at this point with the winding shaft or core kept ready. 5. Machine according to claim 1 or the following, characterized by the arrangement of an adhesive application device (31) shortly before the separation of the web by a arranged behind the winding point of the new roll in the direction of travel Knife (33) applies glue to the web at a point in front of it for winding the winding tube kept ready. 6. Machine according to claim 5, characterized in that each support roller (6,7) has an on Roller star mounted knife is assigned, which is used to separate the web in approximately radial direction is moved outwards to the roller star. 7. Machine according to claim 1 or the following, characterized in that all the support rollers of each roller star are driven by a common internal gear, its Pitch diameter is completely or almost the same as the diameter of the backup roll periphery. 8. Machine according to claim 1 or the following, characterized in that the arms (11) on its shaft (10) by a keyway (37) widened in relation to the wedges (36) within certain Limits are pivotable. Considered publications:
German Patent No. 288 575;
German Auslegeschrift No. 1151 704;
French Patent No. 1,327,982;
U.S. Patents Nos. 2,736,508, 2,777,644,
970 786. 1 sheet of drawings 809 517/385 2.68 © Bundesdruckerei Berlin