CN1762781B - Winding device and clamping disk for use on winding device - Google Patents

Abstract

The invention relates to a winding device for winding continuously fed filaments, and to a clamping disk with a yarn catcher for use in such a winding device. To fix the bobbin, the winding device has a bobbin holder, which holds the bobbin between two rotatably mounted clamping disks. One of the clamping discs has a yarn catcher for threading and catching of the filaments at the beginning of the winding. In order to avoid an imbalance of the clamping disk, a balancing mass is provided to balance the mass of the wire catcher, which is arranged at a circumferential position offset from the wire catcher. In particular for wire catchers with centrifugal force-controlled clamping bodies, according to the invention the clamping disk is equipped with an additional balancing body, wherein the clamping body and the balancing body are fastened on a common end face at mutually offset circumferential positions .

Description

Winding device and clamping disk for use on winding device

technical field

The invention relates to a winding device for winding a continuously fed filament, and to a clamping disc for the winding device with a yarn catcher.

Background technique

A winding device of this type and a clamping disk of this type are known from EP 1 129 975 A2 (TEX 2809).

In the known winding device, a bobbin is fixed between two clamping disks for supporting the wound yarn package. The clamping discs are each rotatably connected to the pivoting arms of a bobbin holder. The bobbin holder is fixed on a rotary shaft with the other end of the pivoting arms, wherein the pivoting arms are rigidly connected to each other. In order to wind the yarn into a bobbin, the bobbin holder interacts with a driven drive roller in such a way that the bobbin or bobbin is held by the bobbin holder in circumferential contact with the drive roller. In order to be able to wind up the filament at the start of the process or after a drum change, the filament which is continuously delivered by means of suction is guided through a yarn guide to a clamping disc on which a catch is formed device. The thread catcher on the clamping disc can be caught and clamped so that it passes through the clamping disc and thus is driven through the bobbin.

In the known winding device and the known clamping disc, the thread catcher consists of a catch nose and a movable clamping body, which can be guided by centrifugal force between a rest position and a clamping position . Such a clamping disc has the advantage in particular that the filament remains fixed on the clamping disc only during the winding process. As soon as the winding process is complete and the winding process is stopped by the brake of the drum, the clamping of the filament is released, so that when the bobbin with the finished drum is removed, there is no longer any residual filament attached to the clamp Serve on a tight plate. However, practice has shown that in order to generate high clamping forces on the filaments, the clamping body must have a minimum weight in order to obtain the high clamping forces produced by the centrifugal force. However, this configuration of the wire catcher results in an uneven weight distribution on the clamping disc, which can be noticed in particular by the unsteady rotational movement of the clamping disc on the winding device, which is transmitted directly to the bobbin by vibrations, And thus may adversely affect the winding of the filament.

Contents of the invention

It is therefore the object of the present invention to improve a winding device of this type and a clamping disk for such a winding device in such a way that at high speeds it is possible to fasten and drive the fastening device with high running smoothness. Clamp the bobbin on the disc.

According to the invention, this object is achieved by the winding device according to the invention and by the clamping disk according to the invention used in the winding device.

The excellent improved structure of the present invention is determined by corresponding following features and feature combinations.

The winding device according to the invention for winding continuously fed filaments has a driven bobbin on which the filaments are wound into a cross bobbin in the range of a bobbin; also has a bobbin Tube holder, which holds the bobbin between two rotatably mounted clamping disks, each with a centering shoulder embedded in the bobbin, one of which carries a A yarn catcher for catching and clamping filaments, characterized in that the clamping disk has a balancing mass for balancing the mass of the yarn catcher, which is formed at a circumferential position offset from the yarn catcher.

The winding device according to the invention is characterized in that the corresponding construction of the yarn catcher independent of the clamping disc is substantially free of imbalance. For this reason, a balance mass is formed on the clamping disc with a circumferential position offset from the wire catcher, so that the quality of the wire catcher can be balanced. Here the wire catcher can be formed both by depressions or protrusions on the clamping disc, or by additional components on the clamping disc. A particular advantage here is that the entire wire catcher often only has to be made in one place on the circumference of the clamping disc. The structure of the balancing mass is designed solely for mass compensation in order to avoid unbalances, which can therefore be formed by material voids or material accumulations on the clamping disk.

In particular, an unbalance on the clamping disk can be avoided here by the fact that the positions of the wire catcher and the balancing mass on the clamping disk are offset by approximately 180° relative to each other.

In the case where the wire catching device has an additional component such as a movable clamping body that can be moved to the clamping position by centrifugal force to form a clamping gap, the balancing mass preferably consists of an additional balancing body that has a The weight of the device is the same as the weight.

According to the clamping disk with a thread catcher used in the winding device according to the invention, it is used to fix one end of the bobbin on a bobbin holder, wherein a first end face of the disc-shaped disk body is provided with a A centering shoulder used to support the end of a bobbin, and the wire catcher is designed to have a movable clamping body in an area outside the centering shoulder, characterized by: An additional balance body is installed on the second end surface, the clamping body is fixed on the second end surface, and the balance body is arranged at a circumferential position staggered from the wire catching device.

The clamping disc according to the invention can advantageously be used in this development of the winding device according to the invention. In the clamping disc of the present invention, the clamping body and the balancing body of the wire catching device are installed on the same end surface of the disc body. This advantageously achieves a rotational symmetry with mass compensation, which completely eliminates the magnitude and phase imbalance caused by the clamping body. The clamping disk according to the invention is particularly suitable for building up a high clamping force for holding and entraining the filament when the bobbin is driven. The function of the clamping body, which is moved by centrifugal force, is then fully maintained, so that the loose tail can be removed from the clamping disc together with the full package without any resistance during a package change in the stationary state.

In the clamping disk according to the invention, the weight balance can be further improved by the fact that the positions of the wire catcher and the balancing body are offset from each other by 180° on the end faces. In particular, the compensating body is designed in such a way that maximum smooth running of the clamping disk is achieved when an operating speed is reached which brings the clamping body into its clamping position.

The balancing body should here possibly have a weight that is substantially the same as the weight of the clamping body.

The following excellent improvement of the clamping disc of the present invention is that the clamping body cooperates with a wire-catching nose formed on the circumference of the opposite end face, and the clamping body passes through the disc body with an exposed clamping shoulder until the wire is caught. nose, and can be moved to a clamping position by a centrifugal force to form a clamping gap, and the clamping shoulder of the clamping body fits on an abutment surface of the wire-catching nose at the clamping position, and The clamping gap formed between the contact surface and the clamping shoulder allows a structurally simple construction in which the thread can be clamped immediately after it has been caught by the catching nose. Such a clamping disk and such an improved winding device are therefore distinguished by a high catching reliability of the filaments.

Since the disk body of the clamping disk is usually made of plastic, the clamping body is advantageously designed as a plastic rod in order to obtain the same frictional properties in the clamping gap between the contact surface and the clamping surface. Here, the weight of the plastic can advantageously be increased by the metal plate, so that a corresponding centrifugal force can be generated on the plastic rod.

In order to equalize the balancing body, it is preferably formed by a second metal plate, which is substantially identical to the first metal plate on the plastic rod.

In order to ensure that the filament can escape from the clamping disc as far as possible without resistance when changing the reel after the reel is braked, the improved structure of the clamping disc of the present invention is preferably designed in such a way that a device acting on the clamping body is arranged in it. A spring that produces a spring force opposite to the centrifugal force, wherein the spring force is less than the centrifugal force. The yarn end can therefore be pulled out of the clamping disc directly before the drum stops.

Description of drawings

An embodiment of the winding device of the present invention and an embodiment of the clamping disc of the present invention will be described in detail below with reference to the accompanying drawings.

The accompanying drawings indicate:

Figures 1 and 2 schematically represent an embodiment of the winding device of the present invention in different operating states;

3 to 5 are different views of an embodiment of the clamping disc of the present invention;

FIG. 6 schematically shows a partial view of the clamping disk shown in FIG. 4 in the operating state.

Detailed ways

1 and 2 show an embodiment of the winding device according to the invention, which can be used, for example, in a texturing machine. An embodiment is shown in FIG. 1 at the start of the winding process, for example at the start of the process or after a roll change. This embodiment is shown in FIG. 2 when the filament is wound into a package. The following description applies to both figures, if not specifically referring to a figure.

The winding device has a rotatable bobbin holder 4 which is supported on a pivot shaft 7 . The rotary shaft 7 is fixed on a frame. At the free end of the bobbin holder 4 formed by two mutually opposite pivoting arms, two mutually opposite clamping disks 5 and 6 are mounted freely rotatable on the free ends of the pivoting arms, for which purpose the clamping disks 5 and 6 are fastened to the free end of a rotatable journal 41 which is rotatably mounted with mutually opposite ends in the swivel arm of the bobbin holder 4 . A bobbin 2 for supporting the package 3 is clamped between the clamping disks 5 and 6, for which purpose the clamping disks 5 and 6 each have a conical centering shoulder which is partially inserted into the bobbin end. The bobbin 2 is thus held centrally between the clamping disks 5 and 6 . For clamping and unclamping the bobbin 2, one of the journals 41 is designed axially movable together with the clamping disc.

The bobbin holder 4 is equipped with a driving roller 10 for driving the bobbin 2 or the reel 3 wound on it at the free end of the pivoting arm. For this purpose, the bobbin 2 or the mandrel 3 rests in contact on the circumference of the drive roller 10 . The driving roller 10 is connected with the driving roller motor 12 through the driving shaft 11 . The entraining roller motor 12 drives the entraining roller 10 at a substantially constant speed, so that the filament can be wound at a constant peripheral speed of the bobbin or growing mandrel.

In order to guide the yarn during winding, a reciprocating yarn guide 13 is arranged upstream of the drive roller 10 , which is driven reciprocatingly in the area of the reel by means of a drive 14 . The drive means 14 can be realized, for example, by a belt drive or a reciprocating threaded godet shaft.

In order to spin-up the running filament 1 on the bobbin 2 at the beginning of the process or after a reel change so that the filament is coiled, on one of the clamping discs 5 a catching device 8 and the other with Auxiliary device that the wire catcher 8 works together. In the exemplary embodiment shown, a wire catcher 8 is drawn on the clamping disk 5 , represented for example by a wire catch nose formed on the periphery of the clamping disk 5 with combined wire catch and clamping slots. This wire catching device on the clamping disc is well known in the prior art, for example, is announced in EP 0 916 610 A2, so reference can be made to said data here. For this purpose, the wire catcher 8 is formed at a circumferential position of the clamping disk 5 . A balancing mass 9 is formed on the clamping disc 5 at an end face of the clamping disc 5 offset by approximately 180° from the circumferential position of the wire catcher 8 . Depending on the construction of the wire catcher, the balancing mass can be formed by voids or accumulations of material. In the present exemplary embodiment, the balancing mass 9 is formed by a peripheral recess on the opposite end face of the clamping disk 5 . Since the material removal required to form the thread catcher 8 on the end face of the clamping disk 5 is substantially equal to the material void of the balancing mass 9 , a complete mass balance is produced—in particular in the operating speed range. Clamping disk 5 is therefore a rotationally symmetrical component without any imbalance. The bobbin 2 clamped between the centering shoulders of the clamping disks 5 and 6 therefore runs with the highest smoothness of running, especially at the beginning of the winding process at high bobbin peripheral speeds. Advantageously, excitations from clamping of the bobbin 2 are avoided.

In order to be able to take up the yarn in the clamping disc 5 by the yarn catcher 8 at the start of the process or after a drum change, a suction device 18 is arranged downstream of the entraining roller in the direction of yarn travel. The suction device 18 has a blade 19 and a suction connection 20 . The blade 19 is used to cut the filament when the reel is changed, and the input filament is led to the thread container by the suction connection at this time. After a reel change and at the start of the process, the filament 1 is fed continuously to the thread container via the suction connection 20 .

A yarn guide 16 is arranged in front of the drive roller 10 in the direction of travel of the filament, which is driven and controlled by a drive 17 and a control device 15 in order to spin up the filament.

In the operating state shown in FIG. 1 , the filament 1 is guided in the direction of the clamping disc 5 by the yarn guide 16, so that the filament is threaded, so that the filament is in contact with the periphery of the clamping disc 5 and can The clamping disc 5 with the wire catcher 8 is caught and clamped when it rotates. The thread length running between the clamping disk 5 and the suction connection 20 is cut off by the cutting device 21 assigned to the clamping disk 5 . The length of thread that is now fed to the clamping disc 5 can be introduced into the winding area via the yarn guide 16 and taken up by the reciprocating yarn guide, so that the winding process to form a bobbin can begin. This state is shown in Figure 2.

Due to the mass balance of the clamping disks 5, the bobbin 2 is centered essentially vibration-free between the two clamping disks 5 and 6 during the entire winding process. The excitations caused by the clamping of the bobbin 2 can thus be significantly reduced, so that the yarn can be wound under the same conditions during the entire winding period and a uniform bobbin structure of the bobbin results.

An exemplary embodiment of the use of the clamping disk according to the invention in such a winding device is explained in more detail with the aid of the following figures. Exemplary embodiments of the clamping disk are shown here in different views in FIGS. 3 to 5 . Figure 3 shows a side view of the end face for supporting the bobbin. The exemplary embodiment is shown in cross section in FIG. 4 and in side view on the opposite end in FIG. 5 . If no figure is specifically referred to, the following description applies to all figures.

The embodiment of the clamping disc 5 with the thread catcher 8 has a disc body 23, which is preferably made of plastic. The disk body 23 is designed in the shape of a disk with a central centering mounting hole 35 with a resulting clamping flange 42 . On the first end face 24.1 the disk body 23 has an annular step 50, to which an annular centering shoulder 22 is fastened. The centering shoulder 22 is preferably made of metal and is firmly connected to the disk body 23 . The centering shoulder 22 here forms the bearing surface for the bobbin. At the outer edge of the disc body 23 on the first end face 24.1 is formed a perimeter 25 surrounding a certain angular range. The periphery 25 has a recess 26 within an angular range α of approximately 30°. A snare nose 27 is formed on the disc body 23 through the recess 26 . Along the direction of rotation of the clamping disc indicated by arrows parallel to the circumferential surface in FIGS. . The thread catcher opening 43 formed by the recess 26 extends in the direction of rotation over the entire area of the thread catcher nose 27 up to the starting point of the periphery 25 , so that the thread catcher nose 27 forms an undercut relative to the circumferential surface of the disc body 23 . In the area of the thread catch opening 43 and the thread catch nose 27, the disk body 23 has a recess 44 into which a clamping shoulder 38 of a clamping body 28 arranged on the second opposite end face 24.2 protrudes.

The clamping body 28 is designed as a curved plastic rod 29 which extends over an angular range of approximately 90°. The plastic rod 29 is fixed on the rotary shaft 31 with a support end. The fixing of the plastic rod 29 on the pivot axis 31 takes place via a first fixing ring 32.1. In addition, the pivot shaft 31 is fixedly connected directly to the disk body 23 at the second end face 24.2. The axis of rotation 31 is preferably formed directly on the disc body 23 . The first metal plate 33.1 is fixedly connected to the plastic rod 29 on the inner side of the plastic rod 29 facing the second end face 24.2. The first metal plate 33.1 is also made into an arc, and is fixed by a fixing pin 34 formed on the plastic rod 29 and a second fixing ring 32.2. For this purpose, the plastic rod 29 is embedded in an annular groove 45 of the disc body 23 . The groove 45 is bounded towards the outer edge by an outer flange 46 and towards the inside by an inner flange 47 . The inner flange 47 here forms a centering recess 36 arranged concentrically with the centering hole 35 and which together with the centering hole 35 can support a journal.

It can be seen from FIG. 5 that a spring 39 is clamped between the plastic rod 29 and the outer flange 46 . As a result, the plastic rod 29 is held in a lower position, so that a greater distance is formed between the clamping shoulder 38 and the snout 27 . This state can be seen from Figure 4.

A compensating body 30 in the form of a second metal plate 33.2 is connected to the disk body 23 in a groove 45 on the second end face 24.2. Here the second metal plate 33.2 is located at an angle of 180° offset from the first metal plate 33.1, wherein the first metal plate 33.1 and the second metal plate 33.2 are arranged substantially on the same radius of the second end face 24.2. The second metal plate 33.2 is fixed by a fixing tongue 49 formed on the disc body 23 and a third fixing ring 32.3. The first metal plate 33.1 and the second metal plate 33.2 are made of the same size and material, so the weight of the two metal plates is the same.

To illustrate the principle of operation of the capture and clamping of the filaments on the clamping disk, reference is now made to FIGS. 4 and 5 . FIG. 5 shows a partial view of the embodiment in FIG. 4 in the region of the clamping shoulder.

As can be seen from FIGS. 4 and 5 , the snout 27 has an inner abutment surface 37 . On the other hand, the clamping shoulder 38 of the plastic rod 29 forms a substantially matching clamping surface 48 . In the working state, the plastic rod 29 overcomes the spring force of the spring 39 and squeezes outward around the rotary shaft 31 due to the centrifugal force of the action. At this time, the clamping shoulder 38 hits the wire catching nose 27 , forming a clamping gap 40 between the abutment surface 37 and the clamping surface 48 . The clamping slit 40 leads into the wire catching mouth 43, so that the long filament that enters the catching wire opening 43 and advances behind the wire catching nose 27 reaches the clamping slit 40 automatically. The filament is clamped and fixed between the clamping shoulder 38 and the snout 27 under the action of centrifugal force. The method of thread guidance here is analogous to the exemplary embodiment of the winding device described in FIG. 1 . The filament is always clamped during the entire winding process due to the centrifugal force acting on the clamping disk. The plastic rod 29 is pressed from the outer clamping position back to the inner rest position by the spring 39 only after the reel or the clamping disk has been braked. At this moment, the clamping shoulder 38 disengages from the catch nose 27, thereby releasing the clamped filament.

The exemplary embodiment of the clamping disk according to the invention merely mentions one possibility for the construction of the clamping disk with centrifugal force-controlled clamping bodies. In principle, the clamping body solutions known from EP 1 129 975 A2 can all be utilized in order to achieve the clamping of the filaments. What is important here, however, is that the weight of the clamping body is compensated by the weight of the compensating body in such a way that no imbalance occurs on the clamping disk in the operating speed range. In this way, relatively heavy clamping bodies with high centrifugal force effects can also be realized. The transmission of impermissible excitation vibrations from the clamping disk to the bobbin can be avoided by a corresponding mounting of the balancing body. There is also the possibility here that the compensating body and compensating mass are formed by a plurality of sub-parts or sub-masses on the clamping disk. What is important for the clamping disc according to the invention is that only one thread catcher has to be formed on the clamping disc. The rotational symmetry for weight balancing can be produced by simple and cost-effective balancing bodies.

graphic marker table

1 filament 26 vacancies

2 bobbins 27 snare nose

3 reels 28 clamping bodies

4 bobbin holders 29 plastic rods

5 clamping disc 30 balance body

6 clamping disc 31 rotary shaft

7 rotary shaft 32 fixed ring

8 wire catcher 33.1 first metal plate

9 balance mass 33.2 second metal plate

10 pressure rollers 34 fixed pins

11 Drive shaft 35 Centering hole

12 drive roller motor 36 centering groove

13 Reciprocating wire guide 37 Fitting surface

14 Drive device 38 Clamping shoulder

15 control device 39 spring

16 wire guide 40 clamping gap

17 Driving device 41 Support journal

18 Suction device 42 Clamping flange

19 blades 43 thread catchers

20 suction connector 44 gap

21 cut-off device 45 slots

22 Centering shaft shoulder 46 Outer flange

23 disc body 47 inner flange

24.1 First end face 48 Clamping face

24.2 Second end face 49 Fixed tongue

25 around 50 steps

Claims (13)

1. A winding device for winding continuously fed filaments, having a driven bobbin (2) on which the filaments are wound into a cross bobbin (3) within a bobbin range; There is also a bobbin holder (4), which holds the bobbin (2) in two rotatably mounted clamps, each with a centering shoulder (22) embedded in the bobbin (2). Between the clamping discs (5, 6), one of the clamping discs (5) carries a yarn catcher (8) for catching and clamping the filament at the beginning of winding, characterized in that the clamping disc (5 ) has a balance mass (9) that balances the quality of the wire catcher (8), the balance mass is formed at a circumferential position that is staggered from the wire catcher (8), and the wire catcher (8) passes through a clamping disc ( 5) The wire-catching nose (27) formed on the circumference is composed of a movable clamping body (28), and the clamping body (28) can be moved to a clamping position by a centrifugal force to form a clamping gap (40), and the clamping body (28) is made into an arc-shaped plastic rod (29), which is rotatably connected with the clamping disc (5) at one end and has a clamping surface (48), and fix a first metal plate (33.1) on the curved plastic rod (29). 2. The winding device according to claim 1, characterized in that the positions of the wire catcher (8) and the balancing mass (9) on the clamping disc (5) are arranged offset from each other by approximately 180°. 3. Winding device according to claim 1, characterized in that the balancing mass (9) is formed by an additional balancing body (30) having substantially the same weight as the thread catcher (8). 4. The winding device according to claim 1, characterized in that: the balance body (30) as a balance mass is made of a second metal plate (33.2), which is connected to the first metal plate (33.1) have the same material and dimensions. 5. The winding device according to any one of claims 1 to 4, characterized in that: a spring (39) acting on the clamping body (28) is provided, which generates a spring in the opposite direction to the centrifugal force force, where the spring force is less than the centrifugal force. 6. The winding device according to any one of claims 1 to 4, characterized in that: the wire-catching nose (27) is formed by a vacancy (26) on the end edge of the clamping disc (5), one of which is used The fitting surface (37) of the clamping body (28) at the clamping position is formed on the inward circumferential surface of the wire catching nose (27). 7. The clamping disk (5) with a wire catcher (8) used in the winding device is used to fix one end of the bobbin on a bobbin holder, wherein the disc-shaped disk (23) A first end surface (24.1) is provided with a centering shoulder (22) for supporting the end of a bobbin, and the thread catcher (8) is designed to have A movable clamping body (28), is characterized in that: an additional balancing body (30) is installed on the second end surface (24.2) of the disk-shaped disc body (23), and the clamping body (28) is fixed on On this second end face, and the balance body (30) is arranged on a circumferential position staggered with the wire catcher (8), the clamping body (28) and a circle on the opposite first end face (24.1) The formed wire-catching nose (27) works together, and the clamping body (28) passes through the disc-shaped disc body (23) until the wire-catching nose (27) with an exposed clamping shoulder (38), and can pass through a Centrifugal force moves to a clamping position, to form a clamping slit (40), and clamping body (28) is designed as an arc plastic rod (29), and this arc plastic rod is with a supporting end and disc-shaped disk body (23) is rotatably connected, and has a clamping shoulder (38) that is completely conformed to the mating surface on the opposite clamping end, and fixes a first metal on the curved plastic rod (29). plate (33.1). 8. The clamping disc according to claim 7, characterized in that the clamping body (28) and the balancing body (30) are located on the second end face (24.2) opposite the centering shoulder (22) are staggered about 180° from each other. 9. The clamping disk according to claim 7, characterized in that the compensating body (30) has substantially the same weight as the clamping body (28). 10. The clamping disc according to claim 7, characterized in that: the clamping shoulder (38) of the clamping body (28) fits on a fitting surface ( 37), and the clamping gap (40) is formed between the abutment surface (37) and the clamping shoulder (38). 11. Clamping disc according to claim 7, characterized in that the balancing body (30) consists of a second metal plate (33.2) which has a Same material and size. 12. Clamping disc according to any one of claims 7 to 11, characterized in that a spring (39) acting on the clamping body (28) is provided which generates a spring in the opposite direction to the centrifugal force force, where the spring force is less than the centrifugal force. 13. Clamping disk according to any one of claims 7 to 11, characterized in that the wire catch nose (27) is formed by a recess (26) on the periphery (25) of the first end face (24.1), wherein The fitting surface (37) is formed on the inward circumferential surface of the wire catching nose (27).

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