Abstract
The present invention relates to a tube holder (6, 7) for a bobbin frame (1) of a winding device, having a conical tube holder element (23), a retaining element (24), and a spring element (25). The tube holder element (23) is nonrotatably connected to the retaining element (24) via the spring element (25), and the spring element (25) is designed as a spring washer.
Claims
1. A tube holder (6, 7) for a bobbin frame (1) of a winding device, having a conical tube holder element (23), a retaining element (24), and a spring element (25), characterized in that the tube holder element (23) is nonrotatably connected to the retaining element (24) via the spring element (25), and the spring element (25) is designed as a spring washer.
2-12. (canceled)
Description
[0018] Further advantages of the invention are described in the following exemplary embodiments, as shown in the following figures:
[0019] FIG. 1 shows a schematic view of a bobbin frame according to the prior art;
[0020] FIG. 2 shows a schematic side view of the bobbin frame according to FIG. 1;
[0021] FIG. 3 shows a schematic illustration of one embodiment of a tube holder according to the invention;
[0022] FIG. 4 shows a schematic illustration of one embodiment of a spring element according to the invention;
[0023] FIG. 5 shows a schematic illustration of another embodiment of a spring element according to the invention; and
[0024] FIG. 6 shows a schematic sectional illustration at location X-X according to FIG. 5,
[0025] FIG. 1 shows a schematic view, and FIG. 2 shows a schematic side view, of a bobbin frame 1 according to the prior art. The bobbin frame 1 is made up of a swivel arm 4 having a swivel axis 5, and a first retaining arm 2 and a second retaining arm 3. The retaining arms 2 and 3 are nonrotatably fastened at opposite ends of the swivel arm 4. A swivel motion 38 of the swivel arm 4 thus causes the retaining arms 2 and 3 together with the swivel arm to be swiveled about the swivel axis 5. The swivel arm 4 is held in a machine frame 22 via corresponding stanchions 20. In addition, tube holders 6 and 7 are rotatably mounted opposite from one another at the end of the respective retaining arms 2 and 3 opposite from the swivel arm 4 via a bearing bolt 11 and 12, respectively. The first bearing bolt 11 together with a first tube holder 6 and a second bearing bolt 12 together with a second tube holder 7 are situated in a shared longitudinal axis 8. A bobbin tube 9 is clamped between the tube holders 6 and 7. One of the two tube holders, for example the tube holder 6, or its bearing bolt 11 is held in the retaining arm 2 so that it is displaceable in the direction of the longitudinal axis 8. In this way, a bobbin tube 9 may be inserted between the tube holders 6 and 7, and the tube holder 6 may subsequently be pressed against the tube holder 7, thus clamping the bobbin tube 9. In the embodiment shown, the tube holder 7 is connected to a drive wheel 13 in the longitudinal axis. The drive wheel 13 is set in rotation by a drive element 14, for example a chain drive, which results in rotation of the bobbin tube 9 due to the connection to the tube holder 7.
[0026] Situated in parallel to the longitudinal axis 8 of the bobbin tube 9 is a backing roller 10 on which the bobbin tube 9 comes to rest due to the swivel motion 35 of the swivel arm 4 about the swivel axis 5. The backing roller 10 is rotatably fastened in the machine frame 22 via corresponding mountings 21. As a result of the rotation of the bobbin tube 9 in a corresponding rotational direction 19, a thread 17 that is laid on the bobbin tube 9 is wound onto the bobbin tube 9, and a bobbin 18 is formed. During this winding operation, a traverse unit 15 moves the thread 17 back and forth along the longitudinal axis 8 of the bobbin tube 9. Various types of windings or bobbins 18 may be produced on the bobbin tube 9 by means of this movement direction 16 of the traverse unit 15. The bobbin 18 increases in diameter due to the formation of a winding on the bobbin tube 9, so that the contact with the backing roller 10 causes the bobbin frame 1 to be swiveled by the backing roller 10 about the swivel axis 5. During the winding operation, the thread 17 is clamped between the bobbin tube 9, or the thread 17 that is already wound onto the bobbin tube 9, and the backing roller 10, resulting in a tight winding on the bobbin tube 9.
[0027] FIG. 3 shows a schematic illustration of one embodiment of a tube holder 7 according to the invention. The tube holder 7 is fastened to the retaining arm 3 via a bearing bolt 12. The bearing bolt 12 is mounted in the retaining arm 3 so that it is rotatable about the longitudinal axis 8, the tube holder 7 being nonrotatably mounted on the bearing bolt 12. The tube holder 7 is formed from a tube holder element 23, a retaining element 24, and a spring element 25. The tube holder element 23 has a female thread 26 for fastening the spring element 25. Screws 30 for fastening the tube holder element 23 to the spring element 25, are provided that pass through a passage opening 29 in the retaining element 24 in a contactless manner and engage with the female thread 26 in the tube holder element 23. Screws 32 for fastening the retaining element 24 to the spring element 25 are provided that pass through a passage opening passage opening 27 in the tube holder element 23 in a contactless manner and engage with a female thread 31 in the retaining element 24. In the illustration shown, the spring element 25 is provided in an embodiment according to FIG. 5, and has fastening holes in the form of hollow pins 28. The screws 30 and 32 are guided through the hollow pins 28 in order to fasten the tube holder element 23 and the retaining element 24 to the spring element 25.
[0028] FIG. 4 shows a schematic illustration of one embodiment of a spring element 25 according to the invention. The spring element 25 is formed from a spring plate 33 in the shape of a ring. The spring plate 33 has a hexagonal shape with rounded corners, and has a central circular opening 34. Six concentrically arranged fastening holes 35 that are uniformly distributed over the circumference are provided for fastening in the tube holder 7 (see FIG. 3), wherein three fastening holes 35 are used in each case for fastening the tube holder element 23 and the retaining element 24.
[0029] FIG. 5 shows a schematic illustration of another embodiment of a spring element 25 according to the invention, and FIG. 6 shows a schematic sectional illustration at location X-X according to FIG. 5. The spring element 25 is made up of six elongated spring plate elements 36, 37 arranged in a hexagon. The spring plate elements 36, 37 at their respective ends are movably connected to one another via a hollow pin 28. A first spring plate element 36 and a second spring plate element 27 overlap at the position of a respective hollow pin 28, and have a corresponding opening for accommodating the hollow pin 28.
[0030] The present invention is not limited to the illustrated and described exemplary embodiments. Modifications within the scope of the patent claims are possible as well as a combination of the features, even when they are illustrated and described in different exemplary embodiments.
LIST OF REFERENCE NUMERALS
[0031] 1 bobbin frame [0032] 2 first retaining arm [0033] 3 second retaining arm [0034] 4 swivel arm [0035] 5 swivel axis [0036] 6 first tube holder [0037] 7 second tube holder [0038] 8 longitudinal axis of the bobbin tube [0039] 9 bobbin tube [0040] 10 backing roller [0041] 11 first bearing bolt [0042] 12 second bearing bolt [0043] 13 drive wheel [0044] 14 drive element [0045] 15 traverse unit [0046] 16 movement direction of the traverse unit [0047] 17 thread [0048] 18 bobbin [0049] 19 rotational direction of the bobbin [0050] 20 stanchion [0051] 21 mounting for the backing roller [0052] 22 machine frame [0053] 23 tube holder element [0054] 24 retaining element [0055] 25 spring element [0056] 26 female thread [0057] 27 passage opening in the tube holder element [0058] 28 hollow pin [0059] 29 passage opening in the retaining element [0060] 30 screw for the tube holder element [0061] 31 female thread [0062] 32 screw for the retaining element [0063] 33 spring plate [0064] 34 central opening [0065] 35 fastening hole [0066] 36 first spring plate element [0067] 37 second spring plate element [0068] 38 swivel motion
