EP0264807B1 - Winding device - Google Patents

Description

The invention relates to a device with a winding nozzle for winding saddle coils. Saddle coils are used in cathode ray tube deflection units for the horizontal deflection of the electrons.

They have in common that the winding strands running in the direction of the electron beam direction are connected in series with one another.

Essentially two technologies are known for realizing such saddle coils.

According to one technology, the winding wire is usually inserted into a winding form provided with corresponding receptacles and the turns arranged in this way are later baked together to form a self-supporting saddle coil. In a further development of this approach, JP-A-5723451 specifies for the formation of a saddle coil that the turns are to be glued directly after application into a non-receiving inner contour of a mold.

In the other technology, a so-called bobbin is required to form the saddle coils, around which the winding wire is wound. This As shown in DE-3011897, the coil former can be closed or, as illustrated in DE-2807978, can be designed to be open on one side. Regardless of the different shapes just described, the two known bobbins have two things in common. These are, on the one hand, the grooves arranged next to one another on the conical inner contour and running in the direction of the long axis of the coil body. Furthermore, these are the chambers arranged on the outside of the coil body, each of which is formed by two mutually parallel edges. The edges forming the end faces of the coil body each have slots through which a winding wire guided in a groove can be transferred to a chamber or a winding wire running in a chamber can be transferred to a groove.

DE-3011897 specifies a device for winding such winding areas, each lying on the inner and outer surface of the coil body, which has a winding nozzle which can be moved in two planes. In this known device, which also forms the starting point for the present invention, the winding nozzle with its internal winding wire is guided from its starting position at the upper edge of the coil former along the inner surface of the coil former to the lower edge and beyond that to the side to a stationary stop . By turning the bobbin holder counterclockwise, the winding wire is inserted into the lower edge of the bobbin. Then he threw the winding nozzle back along the inner surface of the bobbin to the top. There, the winding wire is gripped by means of a hook and drawn to the outer surface of the coil former. Then the bobbin holder performs one Clockwise rotation. Since the winding wire is held by the hook during the rotation, the winding wire is simultaneously inserted into the upper edge (the so-called upper chamber). After the hook has released the winding wire and the winding nozzle has moved down a little, the formation of the next turn train begins in accordance with the procedure described above. The device discussed in this document can also be used to form saddle coils on closed bobbins. Although saddle coils can be formed on all known bobbins by means of the known device, it is extremely cumbersome to finally form saddle coils by means of the known device. This is because an abundance of mechanical and therefore fragile work steps are required. The latter applies in particular to the work steps required to insert the winding wire into the upper chamber.

The invention is therefore based on the object of specifying a device for winding saddle coils on half-open bobbins by means of which saddle coils of any shape can be wound quickly and without problems.

This object is achieved with the means specified in claim 1. Advantageous refinements are contained in subclaims 2 to 5. If the winding nozzle is configured according to claim 5, the rotatable configuration of the receptacle carrying the coil former can even be dispensed with.

Fig.1

eine Seitenansicht einer schematisch dargestellten Vorrichtung zum Wickeln von Sattelspulen;

Fig. 2

die Draufsicht auf die Vorrichtung gemäß Fig. 1;

Fig. 3

den Weg der Wickeldüse längs einer Nut im Spulenkörper;

Fig. 4a

die Drehung des Spulenkörpers zum Wickeln des bis 4d oberen Wickelkopfes;

Fig. 5

den Weg der Wickeldüse längs einer weiteren Nut und

Fig. 6

den Weg der abgewinkelten Wickeldüse beim Wickeln der Sattelspule.

The invention will now be explained in more detail with reference to exemplary embodiments shown in the figures. Show it:

Fig. 1

a side view of a schematically illustrated device for winding saddle coils;

Fig. 2

the top view of the device of FIG. 1;

Fig. 3

the path of the winding nozzle along a groove in the coil body;

Fig. 4a

the rotation of the bobbin to wind the winding head up to 4d;

Fig. 5

the path of the winding nozzle along another groove and

Fig. 6

the path of the angled winding nozzle when winding the saddle coil.

In Figure 1, the device for winding the saddle coils is shown in a side view. On a base plate 1, a stand 2 is arranged, which has a holding arm 3 and a receptacle 4 for the at its upper end Carries the bobbin of the saddle coil (not shown). In addition, there is a device on the base plate 1 which can be moved in three mutually perpendicular planes. This device has a bearing block 5 for a horizontal rod 6, the other end of which is arranged in a carriage 7. The carriage 7 can slide on a further horizontal rod 8, which is arranged at right angles to the rod 6. The rod 8 is connected to the base plate 1 via two bearing blocks 9. A carrier 10 is slidably arranged on the rod 6 and holds a further vertical rod 11. A bracket 12 can slide on this rod 11. The holder 12 has a channel for the winding wire 19 (shown in dashed lines) 13, at one end of which there is an inlet nozzle 14 and at the other end of which there is a horizontal winding nozzle 15. An outlet nozzle 16 is attached to the free end of the winding nozzle 15. The inlet and outlet nozzles correspond to the commonly used nozzles.

The holder arm 3 with the receptacle 4 can rotate about the longitudinal axis of the stand 2. The carriage 7 and thus the rod 6 can move along the rod 8, ie perpendicular to the plane of the drawing. The carrier 10 is movable in the direction of the double arrow 17 along the rod 6. The bracket 12 can be moved in the direction of the double arrow 18 along the rod 11. The three movements mentioned are perpendicular to one another and thus the outlet nozzle 16 can be brought to any point in the space enclosed by the planes of movement.

The drive devices necessary for the movements mentioned are shown in the schematic Representation of the device for winding saddle coils not shown because of the better overview. Likewise, only a short piece of winding wire 19 is shown at the inlet nozzle 14 and the outlet nozzle 16. An output device for the winding wire 19 is also not shown for the sake of clarity.

FIG. 2 shows the top view of the device for winding the saddle coils. From this illustration, the possible movement of the carriage 7 along the rod 8 can be clearly seen and is indicated by the double arrow 23. It can also be seen that the bearing block 5 extends over the entire width of the base plate 1 and has a receptacle for the end of the rod 6 in the region of the rod 8 opposite it. The movement of the holding arm 3 with the receptacle 4 about the longitudinal axis of the stand 2 is indicated by the curved double arrow 20.

The winding process is described below. In the associated figures, only the bobbin 21 with its grooves 22 and chambers for receiving the winding wire 19 is shown in order to clearly illustrate the process.

In Figure 3, the coil body 21 is shown in side view and the starting position a of the winding nozzle 15 is shown. The winding nozzle 15 moves out of this position in accordance with the movement arrows shown, then below the lower edge of the coil body 21 and then upwards in front of the groove to be wound. The winding nozzle then moves further up and to the right up to the position labeled b above the upper edge of the coil body. From here there is a movement to the right and then down to the position labeled c.

In Figure 4a, the coil body 21 is shown in plan view and the winding nozzle 15 in position c. The coil former 21 now rotates clockwise by 180 ° (arrow 24), the winding wire 19 being placed in the chamber running parallel to the upper edge. At the end of this process, the position shown in FIG. 4c is reached.

In FIG. 4b, the coil former 21 is shown with a partially broken edge in order to show the winding wires lying in the chamber underneath. From this figure it can also be seen that the planes of the grooves 22 and thus the planes of the later strands of the saddle coil do not run through the center 26 of the bobbin 21.

The winding nozzle then moves up, i.e. out of the plane of the drawing, and the bobbin 21 rotates 180 ° in the counterclockwise direction (arrow 25). At the same time, the winding nozzle moves to the left until the position shown in FIG. 4d, which is denoted by d, is reached.

In Figure 5, the position d of the winding nozzle and the bobbin shown in Figure 4d is shown again in a side view. The winding nozzle now moves downwards until it has reached position e. From here, it moves to the left and then upwards until the existing sideways under the bottom edge of the winding former chamber has reached. In this position, the bobbin 21 is rotated counterclockwise by 180 ° and the winding wire 19 is inserted into said chamber . Then the winding nozzle moves back to the position marked with e and the coil body is turned back 180 ° clockwise, whereby at the same time the winding nozzle moves to the right and reaches the position g shown in broken lines. This position corresponds approximately to the starting position of the winding process and the next turn is wound in the same way. When the first groove 22 is filled, the winding nozzle moves from its starting position to the next groove and carries out the winding process as described.

If a winding nozzle 15ʹ is used with an angled end, as shown in dashed lines in Figure 1, then the rotation of the bobbin 21 can be omitted when winding the saddle coil. The winding of saddle coils with an angled winding nozzle is described below.

FIG. 6 shows the path of the angled winding nozzle when winding the saddle coil. The winding nozzle is in the starting position a and the angled end points upwards. Position c is then approached via position b. On the way from position b to position c, the winding nozzle rotates 180 ° clockwise about its longitudinal axis, so that the angled end points downward. When position e is reached via position d, the winding nozzle moves to the left into position f. The bobbin 21 remains in the position shown in Figure 6. On the way from the position f via the position g to the position h, the winding nozzle rotates clockwise about its longitudinal axis by 180 °, so that in the position h the angled end of the winding nozzle points upwards. The winding nozzle then reaches position k via position i. From there, the changing nozzle moves to the right until it returns to position a, i.e. has reached its starting position. The next turn then begins winding as described above.

Claims (5)

1. A device for winding coil spools on coil formers, where, for the purpose of accommodating the winding wire (19), the interior surface of the coil former (21), which is of the half-open type, is provided with a series of grooves (22), the said grooves being arranged side by side with each other and running in the direction of the longitudinal axis of the coil former, while the outer surface of the coil former is provided with two chambers, arranged respectively at the upper and the lower edge of the coil former and running parallel to these edges, characterized in that the device is provided with a mobile winding orifice (15) that, during the process of winding the wire onto the coil former (21), is always situated directly opposite the places where the winding wire (19) is at that moment being inserted into the grooves (22) or the chambers of the coil former (21), though always maintaining a certain distance between itself and the said places.
2. A device in accordance with Claim 1, characterized in that the winding orifice (15) can be moved in three planes,.
3. A device in accordance with Claim 2, characterized in that the three planes are all arranged at right angles to each other.
4. A device in accordance with any one of Claims 1 to 3, characterized in that the seating (4) that carries the coil former (21) can be rotated about its longitudinal axis.
5. A device in accordance with any one of Claims 1 to 3, characterized in that the winding orifice (15') can be rotated about its longitudinal axis and has an end that is bent through an angle of about 90°.

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