EP1481930B1 - Winding machine - Google Patents

Description

The invention relates to a winding machine according to the preamble of claim 1.

Such winding machines are known in a variety of configurations. The invention is not directed to the winding of tapes or the like, with a round or similar cross-section, since the problems that occur with tapes and strips with rectangular or flat cross-section, are not present.

The known winding machines that wind up yarns, wires and threads on a sleeve or spool are usually designed so that the guide is moved back and forth in front of the bobbin for producing a cross-wound bobbin. The guide may be a guide roller or another thread guide. This technology is also common in flat tapes and non-round cross-section strips because the moving masses are much lower when the guide moves across the spindle axis.

Also, the accelerations are lower at the reversal points and the associated forces smaller.

Furthermore, it is from the DE 4 55 581 Cl, the EP 0 188 035 A2 or the US 4,413,792 Also known to move the sleeve or coil axially.

In the winding machines known from the latter documents, the axial movement of the winding drum is accomplished, for example, by a hydraulic cylinder. Also known ball rolling spindles with servomotor drive for driving the axial movement.

With these drives, only comparatively low acceleration and deceleration forces can be achieved in the reversal points. Since the maximum winding speed depends on the maximum laying speed, which in turn depends on the said acceleration and deceleration forces, only a comparatively low winding speed can be achieved with these drives. This has an effect particularly on spindles with a small diameter, which can hardly be used economically on the known winding machines.

The invention is an object of the invention to provide a winder of the type mentioned, which also allows faster winding of ribbon or strip.

This object is achieved in principle by the characterizing part of claim 1.

In claims 2 and 3, two different configurations are placed under protection.

In claims 4 to 6 advantageous embodiments are placed under protection.

In the winding machine, the relative movement in the spindle axis direction between take-up reel and guide is generated by not moving the guide back and forth, but the take-up spindle with the take-up reel. This makes it possible, even delicate tapes and strips, even those with uneven cross section, wind up, since the Aufwickelgeometrie is better and more accurate to handle.

In particular, when winding on small sleeves, e.g. 1 "to 3" diameter (25.4 - 76.2 mm) is currently the winding speed especially at the beginning of the winding to a maximum of about 100 - 300 m / min, limited, as the usual servo motor / ball screw units or hydraulic drives get to their maximum possible load. Only after a certain winding diameter is built up can be increased to higher web speed. Therefore, it is desirable to obtain high speed axial movement in the sense of high line speed, especially at the beginning of winding, when the take up spindle is rotating at high speed. To solve this problem, a linear motor is used according to the invention to achieve a much higher acceleration and speed. It is particularly advantageous that at the beginning of the winding, the moving masses are still low. Only when a certain winding diameter has formed, the masses (spindle and motor and gear and winding material) are larger. Then it is possible to reduce the feed rate again and thus possibly protect the motor from excessive heating. A linear motor achieves up to five times the acceleration or deceleration speed of comparable prior art drives.

The faster and thus more economical to work with the spooling machine according to the invention with small diameter spindles have especially the logistical advantage that the packaging density of the finished coils is higher, since the winding capacity of the finished coils is larger with the same outer diameter.

In order to ensure a uniform distance between the guide and take-up reel, ie to take into account the fact that the take-up reel increases in diameter with increasing winding, the winder is either designed as stated in claim 2, or it will be the solution according to claim 3 prefers.

A preferred embodiment operates as a guide with a guide roller, as defined in claim 4. There are also other ribbon guides, as they are known, can be used.

Typically, the winding of the ribbons or strips into cross wound coils is done on conventional cardboard or plastic sleeves. The sleeve is usually slightly wider than the winding material to prevent damage to the end face of the coil during transport or handling. After the wrapping process, laterally protective side shields are often placed on the protrusions of the sleeves. These serve as transport protection or as unwinding aid.

However, it can also happen that, in the case of particularly smooth material to be wound up, a take-up reel or sleeve with fixed side flanges is to be used. This take-up reel body is available in a wide variety of embodiments as a plastic injection molded part, metal body or combinations of two covers of different material, which are firmly connected to a cardboard tube. When winding on such a take-up reel with side flanges, the problem now arises that the tape must be brought as close to the surface of the take-up reel or sleeve at the beginning of the winding process.

In order to cope with this problem, the winding machine according to the invention can advantageously be configured as indicated in claim 5. Characterized in that the guide roller has a correspondingly large diameter, it is ensured that they dive correspondingly far and the tape to be wound exactly and as desired approach the bottom of the take-up reel.

Advantageously, it is possible, as provided in claim 6 under protection, to adjust the width of the guide roller so that it is always only as wide as the ribbon or the strip. This ensures that when starting at the right or left flange of the take-up reel the smallest possible distance is maintained, which should be smaller than half the ribbon width.

In the following the invention will be explained in more detail with reference to the drawing with reference to two embodiments.

Fig. 1

eine schematische Seitenansicht einer ersten Ausführungsform einer Spulmaschine nach der Erfindung;

Fig. 2

eine Draufsicht auf die Darstellung der Fig. 1;

Fig. 3

eine schematische Seitenansicht auf eine andere zweite Ausführungsform einer Spulmaschine nach der Erfindung;

Fig. 4

eine Draufsicht auf die Darstellung der Fig. 3;

Fig. 5

eine den Fig. 2 und 4 entsprechende Draufsicht einer Ausführungsform mit einer besonderen Aufwickelspule; und

Fig. 6

einen Schnitt und eine Ansicht der Führungsrolle der Ausführungsform nach Fig. 5.

It shows:

Fig. 1

a schematic side view of a first embodiment of a winding machine according to the invention;

Fig. 2

a plan view of the representation of Fig. 1 ;

Fig. 3

a schematic side view of another second embodiment of a winder according to the invention;

Fig. 4

a plan view of the representation of Fig. 3 ;

Fig. 5

a the Fig. 2 and 4 corresponding plan view of an embodiment with a special take-up reel; and

Fig. 6

a section and a view of the guide roller of the embodiment according to Fig. 5 ,

In the drawing, like parts are designated by like reference numerals.

The in the Fig. 1 and 2 Spooling machine shown has a take-up spindle 1, which is driven by a motor 2 via a gearbox 3. On this take-up spindle 1, a take-up reel, not shown, can be placed.

The tape to be wound passes over various guide rollers 8 and a dancer roller, which controls tension to a guide roller 10. These rollers 8 to 10 are mounted on a dancer plate 6 which is movable relative to the frame 5 by a motor 7 perpendicular to the direction of the spindle axis. This is indicated by a double arrow.

Again perpendicular to the direction of the wound goods, i. parallel to the axis of rotation of the guide roller 10, the take-up spindle 1 is movable by a motor 4, so that a cross-wound bobbin can be produced. The axial movement of the take-up spindle 1 is generated by a combined linear motor / linear guide unit. A linear motor generates much higher acceleration and at the same time more accurate positioning than a conventional spindle / nut system in the prior art. It will be appreciated that when reciprocating in the direction of the double arrow in the direction of the spindle axis, a cross-wound bobbin when running up the material to be wound up on a take-up spindle.

The motor 7 is controlled so that, as the diameter of the take-up spool increases, the distance between the guide roller and the spindle axis is increased, i. that the correct approximately constant distance to the surface of the take-up reel is maintained. This distance is approximately 1/3 to 2/3 of the ribbon width.

In the embodiment according to Fig. 3 to 4 For the manufacture of the cross-wound bobbin, a movement of the take-up spindle 1 in the direction of the spindle axis is likewise carried out via the motor 4. For this axial movement, a combined linear motor / linear guide unit is also used to perform the high accelerations, especially at the beginning of the winding can. The movement which compensates for the increase in diameter of the take-up spindle is accomplished in this embodiment not by movement of the dancer plate with the various roles, but by movement of the take-up spindle 1 with the motor 2 and the transmission 3. This is done by the motor 7, in this Embodiment, the take-up spindle 1 perpendicular to the spindle axis, ie also moves perpendicular to the axis of the guide roller 10.

In the FIGS. 5 and 6 a further embodiment is shown in a special take-up reel 11, which cooperates with a correspondingly shaped guide roller 10. This take-up reel 11 is in both embodiments, ie after the one after the Fig. 1 and 2 and after the others after the 3 and 4 used.

The take-up reel 11 has two lateral flanges 12 which protect the wound goods. Thus, the tape to be wound can be brought to the bottom of the take-up spool, the guide roller 10 is designed accordingly, ie, it has a diameter which is so large that it dips into the take-up reel between the flanges 12, as when viewing the Fig. 5 becomes clear. The guide roller 10 is designed as narrow as possible in adaptation to the tape to be wound, so that the tape can be brought to the side flanges with the smallest possible distance.

To adapt to tapes of different width, the guide roller 10 is adjustable in width. At the in Fig. 6 illustrated embodiment, two symmetrical on one end side axially toothed discs 10a and 10b are provided. The tooth depths are chosen so that a certain width between the lateral edges can be adjusted continuously. At the outermost guide roller width, although rectangular openings are formed on the roller surface, which, however, are easily bridged with a small module by the overlying ribbon. The openings are even advantageous in high-speed machines to divert the air of the laminar flow layer inwards. This can not lead to a floating of the ribbon on the leadership role. The ribbon is safely guided.

Claims (6)

1. Winding machine for winding tapes or strips, particularly having a rectangular or flat, i.e. non-circular cross-section, with a winding spindle (1) for receiving a winding spool (11) and with a guide (10) from which the tape to be wound on is taken up on the winding spool, the winding spindle (1) together with the winding spool (11) being movable backwards and forwards in the direction of the spindle axis at right angles to the central take-up direction of the tape or strip on the winding spool, characterized by a linear motor with parallel linear guidance units for performing the advance movement of the winding spindle (1).
2. Winding machine according to claim 1, characterized in that, adapting to the diameter of the winding spool (1), the guide (10) is movable at right angles to the direction of the spindle axis.
3. winding machine according to claim 1, characterized in that, adapting to the winding spool diameter, the winding spindle (1) with the winding spool (11) can additionally be moved at right angles to the direction of the spindle axis.
4. Winding machine according to one or more of the preceding claims, characterized in that the guide is formed by a guide roll (10) located on a floating plate (6).
5. Winding machine according to claim 4, characterized in that the winding spool (11) has larger diameter lateral flanges (12) and that the diameter of the guide roll (10) is so large that sinking down to the spool base is possible.
6. Winding machine according to claim 5, characterized in that the width of the guide roll (10) can be adjusted to adapt to the tape or strip width.

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