DE2940987A1 - A winding unit for use in a winding machine for winding elongate members or cores - Google Patents

Description

5478

PEDERSEN, Jan Boie

No. 5 Buskevej
433o HVALS0, Denmark

Winding unit for use in a winding machine for winding elongated workpieces or cores

The invention relates to a winding unit with a wire magazine for use in a winding machine, especially for winding an elongated workpiece or tube or a core with wire or insulating material. The winding unit can be used for winding of toroidal cores are used, but can also be used to wind other cores.

With existing machines for winding toroidal cores., primarily with wire-like material, winding units are used Magazines are used, which mainly belong to the following types:

1) for the reel magazine type 4) for the single ring type

2) to the tubular magazine type 5) to the bandaging type

3) to the two-ring type

In winding units of the reel magazine type, as they ■ ;. B. are known from DE-AS 1 228 719, the coil magazine moves in a circular path around the workpiece to be wound around and at the same time rotates around its own axis. The disadvantages of this construction are that in one previous operation the winding material in the reel magazine .2o must be wound up and that the size of the supply in Bezig on the one hand the dimensions of the circular path and on the other hand the workpiece to be wound is limited. At the Winding of toroidal cores, regardless of whether they are open or closed, the size of the coil magazine and so that the supply is limited by the size of the opening of the toroidal cores, which is also a disadvantage.

When the tube magazine type, such. From U.S. patent amendment No. Re. 17,559 known, a pipe is used,

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which is bent into a circular ring in which the winding material forms a spiral. During the winding process, the ring rotates in its own plane around its own center point and around the workpiece to be wound. The disadvantage of this construction is that the wrapping material has to be twisted in a previous operation with the help of a special device and pushed into the pipe .

A winding unit of the two-ring type, as known for example from British patent specification No. 660.210, consists of a feed ring and a magazine ring. The two rings have almost the same diameter and a common axis of rotation. The disadvantage of this construction is that the two rings must first perform a rotary movement 5 in which they are locked together when they apply the wrapping material to the magazine ring, after which the lock is released, the direction of rotation is reversed and the winding in one of the can be carried out analogously to both of the above-mentioned methods.

The fact that in the two-ring type, due to the feed ring, the cross-sectional area is increased in relation to that of the tubular magazine type , has the effect that the smallest size of the opening of both open and 2 ') closed toroidal cores is increased.

In the single ring type, such as known from US Pat . No. 3,662,965 , a closed ring with a U-shaped cross section and provided with a shuttle is used.

The disadvantage of this type is that the finger first has to make a number of revolutions in order to wind the winding material onto the magazine, after which the direction of rotation is reversed and the winding is carried out with the help of the shuttle in a way.

3'i per can, the same as that used in the double ring type

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is analog. With both open and closed With toroidal cores, the winding plane is offset from the center of the opening, which increases the amount of wire used will. In addition, the smallest size takes the Opening of the toroid with increasing strength of the shuttle to.

The bandaging machine is used to cover a finished winding with a strip-shaped insulating film used. Such a machine may have a magazine comprising two identical rings between them cylindrical rollers are arranged close together. With one of the German disclosure documents DE-OS No. 2.427.5ÖÖ according to the machine is the attempt has been undertaken to use this principle for winding wire. However, when it is used for wire winding, the principle has two main principles Disadvantage. Firstly, a large opening remains in the toroid because the wire supply is only from the outermost part the rollers are supported with flanges. Second, it results from the fact that the individual cylinders are flanged roll during the winding process, a strong friction between the wire supply and the flange, and the wire will tear if more than one layer of wire is attached to the magazine will.

In addition, the magazine types described have in common, that the wire tension during the winding process is maintained with the help of a friction brake. However, this type of brake can only use the nominal wire voltage without changing the fluctuation range of the wire tension.

The aim of the present invention is to create a winding unit which works according to a new winding principle and in particular, but by no means exclusively, is intended for winding toroidal cores and in which the Disadvantages of the known winding process are avoided.

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In particular, the aim is to reduce the winding time and to simplify handling to a level that is suitable for automated operation, the invention therefore relates to a winding unit for winding elongated workpieces or cores, in particular closed ones Cores, such as toroidal cores, with wire or insulating material, which winding unit with drive means and possibly Braking means is provided, and according to the invention this winding unit is characterized in that the cross section the storage chamber of the wire magazine has a height and a width which is much greater than that Wire diameter that the wire supply is stationary with respect to the wire magazine during the winding process and that the wire magazine is set up to be emptied from below.

This ensures that the winding of a core begins at the same time as the magazine is filled can be, since the winding material, which is preferably lacquered copper wire, directly into the magazine led down and through its underside at any point out of this and to the to be wound Workpiece is led down. While the magazine is rotating, the workpiece and refilling the magazine at the same time. When the magazine is filled enough, the wire is cut and the wire supply in the magazine is wound onto the workpiece, without changing the direction of rotation or even stopping the magazine.

If the wire magazine is emptied from below at a point that is any fixed point below the underside of the wire magazine is opposite to a wire feed element, which is separated from the wire magazine and is arranged around an axis of rotation common to this, so that the wire magazine and the Wire feed element freely relative to one another, but in the-

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can rotate the same predetermined direction of rotation, results There is a fixed, well-defined point at which the wire is removed from the underside of the magazine can be. The magazine is also suitable for large wire diameters.

By setting up the wire magazine so that it is from its underside through a flexible Can be emptied through the gap, the result is that the smallest possible opening is left behind when the toroidal cores are wound, because the filled winding unit does not take up much more space than the wound one Amount of wire. This makes it possible to achieve an opening that remains, which is significantly smaller than the one with the known winding machines achievable.

When the wire magazine and the wire feed element each consist of two mainly ring-shaped elements consist, which are arranged concentrically around the common axis of rotation, results in a winding unit with small dimensions, so that the remaining opening can be small in a toroid.

A small opening left in a toroid can also be achieved with another embodiment, which is characterized in that the wire magazine βΐηεη has a larger diameter than the wire feed element and the latter surrounds that the wire magazine has a mainly 0- or U-shaped cross-section, in which the wire is collected that the wire magazine has a flexible central gap through that the wire can be pulled out, and that the wire magazine and the wire feed element each through a set of bearing elements are supported.

According to a further embodiment, which is characterized in that the wire magazine has a larger one Diameter than the wire feed element and the latter surrounds that the wire magazine has a main

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neuter O- or U-shaped cross-section in which the wire is collected , and that part of the lower part of the wire magazine is formed by bearing elements which are attached to the wire feed element, which bearing elements reduce the friction between the concentric annular elements and at the same time the Form a fixed, arbitrary point at which the magazine is emptied, a reduction in friction is achieved, which makes it possible to work with higher winding speeds.

If both the wire magazine and the wire feed element form an open ring, toroidal cores can or other closed cores can be wound without the winding unit having to be opened.

A winding machine, which is very reliable and easily adjustable, can by using a winding unit can be achieved in which the bearing element between the magazine and the wire feed element one or more Comprises ball tracks or in which the bearing element comprises sliding or ball bearings which are attached to the wire feed element are.

In a further embodiment, the wire is transparent braked by a separate, only acting on the wire magazine braking device, whereby v. constant wire tension during the winding process can achieve.

Fei particularly advantageous embodiments of the flexible gap, this gap can be seen either from an e ^ sti material in the underside of the wire magazine or are formed by two ring-shaped parts, of which at least one is elastically attached, that it is concentric with its wire magazine ring.

A mechanically very simple construction of the flexible gap can be achieved in that the 5 two symmetrical rings of the wire magazine in ela-

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-δ ■.

stj see bearings are mounted in such a way that they are of elastic forces are pressed against each other.

A possibility of very high winding speeds Achieving with thin wires can be achieved with a winding unit with a flexible gap, though the latter is formed by an air silver pressure which the Formation of an air cushion causes that carries part of the wire supply, which Luit overpressure from nozzle-like Means can be generated on the wire magazine during the rotation of the same.

The invention will now be explained in more detail with reference to the accompanying drawings. It indicates

1 shows a winding unit according to the invention with a flexible gap,

FIG. 2 shows a section through the winding unit according to FIG. 1,

3 shows a winding unit according to the invention with an open Wire magazine and wire feed element, Fig. 4 is a section through the bearing elements of the V / i disgusting unit according to Fig. 3,

5 shows an embodiment with open rings,

6 shows an embodiment with two sets of La p ere elements,

FIG. 7 shows the embodiment according to FIG. 6 in detail with a flexible gap and

Fig. Ö shows an embodiment of the magazine construction according to FIGS. 6 and 7.

1 shows a winding unit which comprises a wire magazine 42 which is supported by guide rollers 60 and set in rotation by drive means 61 with the aid of a ring 51. The wire material 2 ₄ 5 is fed from a wire supply 46 located outside the winding unit through guide means 47 together with the belt 51 to the wire magazine 42, from where

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from it further through the underside of the wire magazine, as shown in Fig. 2 at 62, a has flexible gap, is led to the core 49 to be wound. The free end of the wire material 45 is held against the core 49, and when the wire magazine 42 is rotated, the wire 45 is around the Core 49 lying around. So that the turns are correct are placed on the core 49, the latter and the winding unit must be relative to each other during the winding process. : 0 other to be moved. This can be done in a conventional manner with the aid of holders 50 for the core 49.

As shown in Fig. 2, the wire magazine comprises two symmetrical rings 42, which with the help of guide rollers 40 are fixed relative to each other. the flexible gap 62 is formed between two rubber lips 63.

As shown in FIG. 1, the wire magazine 42 is in two sections with the connection points 57 divided so that the closed ring of the magazine is opened for the purpose of attaching closed toroidal cores can.

In Fig. 3 a Wjckeleinheit is shown, which comprises a wire feed element 11 and a wire magazine 12, which with the help of bearing elements 13 relative to one another can rotate freely. The rotation of the feed element 11 is controlled by special drive means 14 in Causes the form of gears or friction wheels which are in engagement with the feed element 11. The

.30 wire material 15 is from an outside of the winding unit The supply 16 located is fed to the wire magazine 12 by guide elements 17, from where it continues through the underside of the wire magazine through a fixed point 10 on the feed element 11 to the to be wound 5 Fern 19 is performed. The free end of the wire material

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is held against the core 19, and when the feed element 11 and thus the fixed point 10 is set in rotation, the wire 15 is wrapped around the core 19 and at the same time the wire magazine 12 is filled with wire. So that the turns are correctly placed on the core 19, the latter and the winding unit must be displaced relative to one another during the winding process. This can be done in a conventional manner with the aid of holders for the core 19. 3 shows a braking device 21 in the form of a belt which surrounds the wire magazine 12 on part of its periphery and rests against the wire magazine. As an example, four identical bearing elements 13 are shown in FIG. 3 between the feed element 11 and the wire magazine 12, and in FIG. 4 a single bearing element 13 is shown in detail. In this embodiment, the feed element is divided into two symmetrically arranged rings 22. The bearing element comprises two ball bearings 23 which are each arranged in one of the rings 22 and are connected to one another by a common shaft 24 which holds the two rows together. The wire magazine comprises two symmetrical rings 25 which are fitted between the two rings 22 of the feed element and, in relation to them, are arranged on the shaft 24 with the aid of a roller 26. The two rings 25 of the wire magazine can roll on the roller 26, as a result of which the wire magazine 12 can be set in rotation about the common axis of rotation with respect to the feed element 11. One of the rollers 26 can represent the fixed point 16 on the feed element 11, at which the wire material 15 is pulled out from the underside of the wire magazine 12 from the latter.

As can be seen from FIGS. 3 and 4, this is Wire magazine 12 and the wire feed element 11 in sections divided with connection points 27, so that the closed ring of the feed element 11 and the Ma-5 gazins 12 for the purpose of attaching closed toroidal cores

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: 294098?

'AA-

can be opened. The wire 15 can be the supply of the Underside can be removed over the roller 26, which represents the above-mentioned fixed point Iß.

In Fig. 5, an embodiment is shown in which the wire feed element 11 and the wire magazine 12 open Rings are that immediately around closed toroidal cores can be attached around.

In FIG. 6, an embodiment is illustrated in which the wire magazine 12 has the wire feed element 11

DO includes. In this case the wire magazine is from supports separate bearing elements 30, which are carried by consoles on the winding machine, and the feed element 11 is formed by a broken ring in one piece that is exposed with respect to the magazine is arranged.

Fig. 7 illustrates in detail the bearing elements 30 and 31, the wire magazine 12 with the rubber lips 32 and the feed element 11 according to the embodiment Fig. 6.

In Fig. Ss. is an alternative embodiment of the Magazine according to FIGS. 6 and 7 shown. The figure shows a practical embodiment of a magazine construction with a circular cross-section, so that the remaining opening in a wound toroidal core is the same The same size as the cross-section of the magazine and feed ring is retained together.

A VJi eke Ivorgang like him with a erfindungsgerqässen This can be described step by step as follows:

a) The wire is fed from the supply roll through the underside of the magazine to the core and held on to this.

b) The magazine is set in rotation. Every time a turn has been wrapped around the core, is a corresponding length of wire through the bottom of the

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Magazine has been pulled out of the magazine through it, being the point at which the wire was pulled out is shifted by a piece corresponding to the length of a turn or a corresponding shift between the two the wire magazine and the guide ring. At the same time, the magazine has become one of its own Circumference moved in addition to the length of a turn corresponding piece, and a corresponding wire length is the Magazine has been fed.

c) The wire is cut as soon as there is sufficient supply in the magazine for the current process has been filled, and the winding process continues with the same direction of rotation until the magazine is emptied.

The winding unit with a wire magazine according to the invention can be used for winding elongated workpieces of any kind, both curved and straight, can be used with wire material or insulating material. In particular, it is used for winding cores for electrical Coils and transformers, such as closed toroidal cores, are suitable.

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Claims (10)

P 29 Ao 987.8 5A78 294098? Godparent speeches 1. Winding unit with a wire magazine (12, 42) for use in a winding machine for winding elongated workstocks or cores, in particular closed cores, such as toroidal cores, with wire or insulating material, which winding unit is provided with drive means and optionally braking means, characterized that the cross-section of the storage chamber of the wire magazine (12, 42) has a height and a width which is significantly greater than the wire diameter, that the wire supply (15, 45) during the winding process with respect to the wire magazine (12, 42) is stationary and that the wire magazine (12, 42) is set up to be emptied from below. 2. Winding unit according to claim 1, characterized in that the wire magazine (12) is emptied from below at a point which is opposite any fixed point (18) under the underside of the wire magazine on a wire feed element (11), which is separated from the wire magazine (12) and arranged around an axis of rotation common to this, so that the wire magazine (12) and the wire feed element (11) can rotate freely relative to one another, but in the same predetermined direction of rotation. 3. Winding unit according to claim 1, characterized in that the wire magazine (42) is set up so that it can be emptied from its underside through a flexible gap (62). 4. Winding unit according to claim 2, characterized in that the wire magazine (12) and the wire feed element (11) each consist of two mainly ring-shaped elements (22, 25) which are arranged concentrically around the common axis of rotation. 030606 / Ό013 P 29 Ao 987.8 _Λ Changed claims (on July 5, 1979 (07/05/79) in the International Bureau received) 1. Winding unit for use in a winding machine for winding elongated workpieces or cores, in particular closed cores, such as toroidal cores (19), with wire or insulating material, which winding unit is a mainly ring-shaped wire feed element (11) which is arranged so that it is with A predetermined direction of rotation rotates in its own plane, following a movement path that encircles the workpiece (19) to be wound, and comprises a mainly ring-shaped wire magazine (12) which concentrically surrounds the wire feed element (11) and is arranged so that it is in its own plane rotates independently of the rotation of the wire feed element (11) in said predetermined direction of rotation and simultaneously with the winding of said workpiece (19) removes wire (15) from a wire supply, characterized in that the wire magazine (12) has a mainly 0- or has a U-shaped cross-section having a height and a width, i ie is much larger than the wire puncture, and that the wire magazine (12) is designed to be emptied from its underside at a point that is opposite a fixed, arbitrary point (1δ) on the wire feed element (11). 2. Winding unit according to claim 1, characterized in that the wire magazine (12) and the wire feed element (11) each consist of two pairs of mainly ring-shaped elements (22, 25) which are arranged concentrically around a common axis of rotation. 3. V / i ckeleinhei t according to claim 2, characterized in that part of the underside of the Drahtir.agazins (12) is formed by bearing elements (13, 24, 26) which are attached to the wire feed element (11), polygamy Warehouse- 030606/0 013 elements reduce the friction between the concentric annular elements (22, 25) and at the same time form the fixed, arbitrary point (1β) at which the magazine is emptied. 4. Winding unit according to claim 3, characterized in that the bearing element (13) comprises sliding or ball bearings (23) which are fastened to the wire feed element (11). (Fig. 4) 5. Winding unit according to claim 1, characterized in that the underside of the wire magazine has a flexible central gap (62) through which the wire (15) can be pulled out, and that the wire magazine (12) and the wire feed element (11) each through a set of bearing elements (30 ^ 31) are supported. 6. Wjckeleinheit according to claim 5 » characterized in that the bearing element (13) between the magazine (12) and the wire feed element (11) comprises one or more ball tracks. (Fig. 8) 7. Winding unit according to claim 5 or 6, characterized labeled in - z eichnet '/' 0 that the flexible slit (62) in the bottom of the wire magazine by lips (32, 63) is formed of an elastic I'aterial. £ *. V.'i disgusting unit according to claim 5 or 6, characterized in that the flexible gap is formed by an excess air pressure which causes the formation of an air cushion which carries part of the wire in the wire magazine (12). °. Winding unit according to Claim 6, characterized in that the excess air pressure is generated by nozzle-like gowns on the wire magazine (12) during its rotation. 10. Wickeüeinheit according to any of the preceding claims, characterized gekennzei c HNET that the wire magazine (1?) And the wire supply member (11) each form an open ring. 030606/0013