DE9001651U1 - Adapter for a clamping device for winding cores or spools with different inner bores - Google Patents

Description

AGFA-GEVAERT 5090 Leverkusen 1 STOCK COMPANY Patent Department std-kal-d Aäepter for sine clamping device for Wie^fslkema or

with different inner?N > hrungs

This invention relates to an adapter for a clamping device for the ^sequential winding of winding cores or spools with different inner bores, wherein the clamping device consists of a rotatably mounted block sitting on a circular disk, wherein the outer circumference of the adapter is at least partially adapted to the inner bore of the winding core and wherein the adapter contains several clamping elements which press the winding core against the circular disk.

In longitudinal cutting devices for tapes, a relatively wide film web is cut into several narrow strips and wound into rolls on individual cores. In contact winding machines, pivoting winding arms are mounted on a winding shaft, which have a clamping device to hold the cores.

From DE-GM 78 14 447, a clamping device for winding cores and reels for winding magnetic tapes is known, consisting of a rotatably mounted hollow cylindrical receiving body with a stop, for example a circular disk. The receiving body contains several spring-loaded clamping elements distributed over its circumference, which contain a spring with a ball resting on it in a counterbore, whereby the clamping elements are located at a distance from the stop so that the attached winding core is at

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The spherical cap protruding from the counterbore is supported and is pressed against the stop by the cap. This clamping device is suitable, for example, for winding cores of the so-called NAB type according to DIN 66 209 or for stackable winding cores according to DE-PS 24 48 853.

Furthermore, DE-GM 86 15 786 describes a tensioning device for winding cores according to DIN 45 515, the so-called AEG-Ksrn, for winding magnetic tapes. It consists of a rotatably mounted block sitting on a circular disk, the outer circumference of which is adapted to the inner bore of the winding core and which contains two opposing bushings as tensioning elements, each of which has two balls that support each other on the outside on the collar of the respective bushing and on the inside via a spring. In this way, the winding core is pressed against the stop in a similar way to the aforementioned DE-GM.

The winding cores mentioned above differ primarily in the size and shape of the inner bore. Now there is always the need to wind the lengthwise cut tapes onto different spools or winding cores as required. Then either the entire winding arm has to be replaced or cutting and winding systems have to be constantly available for the different systems. Both measures are uneconomical, and so the task was to create a winding and tensioning device for optionally winding cores with different inner bores.
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In addition, the various tape recorders, loaders and winders available on the market have different axle mounts, which are generally only suitable for a specific winding core or all

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specific coil shape. Here too, the task was to fit all possible winding cores or coils onto one and the same axle receiver.

According to the innovation, the stated tasks were solved with an adapter with the features mentioned in the characterizing part of claim 1. Further details of the innovation can be found in the subclaims, the description and the drawings. The innovation is explained in more detail below with reference to the drawings, namely the

Figure 1 is a top view of the new adapter

Figure 2 shows a partial cross-section through the innovative adapter according to Figure 1.

The adapter (3) is, as can be seen from the two figures, an essentially cylindrical ring body, the inner bore (14) of which is shaped in such a way that it can be placed on a winding or clamping device for a winding core with a small inner bore, for example on a winding core according to DIN 45 515, as known from the above-mentioned utility model 86 15 786. The outer circumference of the adapter is formed by a hollow cylindrical receiving body (19), as known from the above-mentioned utility model 78 14 447. The peripheral surface of the cylinder (13) can be conically tapered towards the front edge, so that a clearance is created between the peripheral surface of the cylinder (13) and the bore of the winding core (6) and so that the fitting process is not hindered if the winding cores are tilted. The conical part of the receiving cylinder can also run close to the stop, so that the core can only be pushed into a part rests straight on the cylinder. In this case

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The clamping elements are also mounted vertically on the conical part, which makes it even easier to load and remove the cores from the clamping device.

Furthermore, the adapter (3) has several screws or rivets (4) between its inner and outer circumference, distributed over its circular surface (15) on the side facing the circular disk (2) of the winding device, which each engage in correspondingly shaped holes (16) that continue in a circular slot (7), whereby the adapter can be locked to the circular disk in a bayonet-like manner.

Furthermore, snap-in devices are provided on the same side of the circular ring surface (15). These consist of balls (8) which are supported by helical springs (10*) in the collar of a bushing (11), whereby a spherical cap protrudes from the ring surface (15). The snap-in devices are arranged in such a way that when the bayonet locking mechanism described above is reached, the balls (8) snap into the corresponding circular holes (12) in the circular disk (2). In this way, the adapter is locked in a rotation-proof manner, which can then be released again and removed from the block by simply turning it in the opposite direction.

In a practical design, the described clamping device is attached to the adapter (3) in such a way that when a winding core according to DIN 66 209 is attached, the geometric center A of the winding surface (17) is the same as when a winding core (not shown) according to DIN 45 515 is attached instead of the adapter. In this way, with the easy change of different

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different winding cores, there is no shifting of the winding plane.

The described design of the adapter - the hollow cylinder (iSj) is connected to the outside of a circular ring (15) - is practical because it allows the bushings (5) for the clamping device to be attached to the hollow cylinder in a simple manner. However, other shapes for the adapter are of course also conceivable.

10

From the above it is clear that the new

bj tion is suitable for all possible applications, so

I also for winding cores or spools for typewriter ribbons, I Filaments, wires, threads and so on, provided that a plug-on I 15 bar anti-twist adapter for winding cores or spools I with different internal holes is required. I The new adapter can also be used on tape recorders

% machines, drives, winders or loaders.

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Claims (3)

Protection claims: 1. Adapter for a clamping device for selectively winding winding cores or spools with different inner bores, the clamping device consisting of a rotatably mounted block (1) sitting on a circular disk (2), the outer circumference of the adapter being at least partially adapted to the inner bore of the winding core (6) and the adapter containing several clamping elements (5, 9, 10) which press the winding core (6) onto the circular disk (2), characterized in that the adapter (3) is a cylindrical ring body which can be plugged onto the block (1), the outer circumferential surface (13) of which is adapted to the inner bore of an attachable winding core and the circumferential surface (13) containing several clamping elements known from the prior art, the ring surface (15) facing the circular disk (2) containing several screws or rivets (4) which are inserted into circular slots (7) of the circular disk (2) can be engaged with the extension (16) in a bayonet-like manner and can be locked in the circumferential direction of the ring surface and wherein several snap elements are distributed over the circumference of the hollow cylinder (19), consisting of balls (8) which are supported by helical springs (iü·) in the collar of a bushing (11) and which protrude from the hollow cylinder in the direction of the circular disk (2) and can be snapped into correspondingly arranged circular holes (12) of the circular disk in the locking position in a rotationally secure manner. 2. Adapter according to claim 1, characterized in that the clamping elements (5, 9, 10) are arranged axially in relation to the circular disk so that when the winding core (6) is placed on the disk, the geometric center (A) of the winding surface A-G 5562 <1IC I« (it· · a ■ -T- (17) is the same as when the adapter (3) is not present and when the winding core is plugged onto the block
(1). 3. Adapter according to claims 1 to 2, characterized in that it consists of a circular ring (15) with the inner bore (14) and a
Hollow cylinder (19). A-G 5562