WO2010102924A1

WO2010102924A1 - Winding machine

Info

Publication number: WO2010102924A1
Application number: PCT/EP2010/052599
Authority: WO
Inventors: Suprit Pal Singh; Jochen Adler
Original assignee: Oerlikon Textile Gmbh & Co. Kg
Priority date: 2009-03-07
Filing date: 2010-03-02
Publication date: 2010-09-16
Also published as: JP2012519636A; EP2403793B1; EP2403793A1; CN102341331B; JP5479501B2; CN102341331A

Abstract

The invention relates to a winding machine having two overhanging-mounted winding spindles (2). The winding spindles are connected to one another on their protruding ends by a holder (10) in order to prevent vibrations. The holder has no connection to the frame of the winding machine. Couplings (8) between the winding spindles and the holder make it possible to mutually separate the holder and the winding spindles so that the holder can be pivoted to the side in a parking holder and the coils (9) of the then free winding spindles can be removed. The couplings are activated preferably together with the activation of the tensioning means (16), by means of which the coils are clamped on the winding spindles.

Description

Dishwasher

The invention relates to a winder according to the preamble of claim 1..

Winding machines serve to wind continuous filaments into coils. For this purpose, the threads are first changed by a traversing device transversely to the thread running direction and guided over a rotating pressure roller. The pressure roller sets the threads on each of the wound coils to be wound. Several coils are arranged in alignment one behind the other on a common winding spindle. This makes it possible to wind several threads at the same time.

With increasing coil diameter, the distance between the winding spindle and the pressure roller must be increased continuously. This is done by arranging the winding spindle on a rotatable winding spindle carrier whose axis of rotation is parallel to the axis of rotation of the winding spindle.

In addition, the winding spindle carrier provides a second winding spindle. By rotating the winding spindle carrier, the winding spindles are alternately pivoted into a winding area and an alternating area. In the winding area, the threads are wound up. After the bobbin is wound to the end, the winding spindle with the winding spindle carrier is swiveled into the exchange area, where the full bobbins are exchanged for an empty tube. At the same time, the winding spindle, which is already waiting in the changing area and already equipped with sleeves, is swiveled into the winding area. As a result of the rotation of the winding spindle carrier, the thread, which continues to flow towards the bobbin, comes into contact with the other winding spindle already rotating in this phase. On the winding spindle or on the empty sleeves catching means are provided, which now detect the current thread and cause the thread is now wound by the other winding spindle. The thread connection between the two winding spindles is separated in this process.

The full bobbins and the empty tubes are axially removed from the winding spindles or attached to the winding spindle during an exchange. For this purpose, the winding spindles are cantilevered cantilevered.

Accompanied by the ever-increasing efficiency of dishwashers, the spindles are now designed for 8 or more spools, so that the spool spindles have corresponding overall lengths that are dynamically soft and thus easy to excite vibrations. Due to the broadband vibration excitation by the rotating coils, which pass through a wide speed range between the tube diameter and the final coil diameter, the winding spindles must be very well damped. The disadvantage, however, is that due to the cantilevered shape of the winding spindles, the first natural frequency is very low.

For this reason, the patent DE 41 33 232 C2 proposes to connect the projecting ends by couplings with a holder, which in turn is rotatably connected via a carrier to the frame. The rotatable connection ensures that the holder can rotate together with the rotatable winding spindle carrier. In addition, the carrier is connected to a drive which can connect or disconnect the couplings with the winding spindles. This is required because the change of the coils, the free access to the projecting end of the winding spindle is required.

Even if this solution achieves the goal of preventing the first mode of vibration, this is a very complex and expensive solution, which, moreover, hinders the operation of the winding machine due to its high construction volume.

It is therefore an object of the invention to provide a winder, wherein the first vibration eigenform of the winding spindles is prevented by a structurally simple, inexpensive and not disturbing in operation construction.

This object is achieved in that the holder which connects the two winding spindles in operation in a connecting position with each other, at least in the connecting position is connected exclusively to the winding spindles. This means that the holder in the connecting position has no connection to the frame, which carries the individual components of the winder and thus has no NEN carrier which establishes the connection with the frame and interferes with the operation of the winder. The invention is based on the knowledge that already the coupling of the additional mass of the second winding spindle to the rotating winding spindle is sufficient to influence the winding spindles in their oscillatory motion.

In a further development of the invention, the couplings that make the connection between the holder and the winding spindles, actuated by an actuating drive, which acts together with a clamping drive for actuating the clamping means. This has the advantage that the couplings are actuated directly by the winding spindle, but no separate power supply and control is required. Rather, the already existing compressed air, for operating the clamping means in the Winding spindle is passed or axially displaceable tensioning devices used to actuate the clutch.

Alternatively, the couplings may also have external actuating means. For example, the clutch can be operated by an operator or doffer. By way of example, this can be done by bolts, bayonet locks, etc.

The winding machine preferably has a parking mount into which the holder can be inserted in the change position. This eliminates the retention of the holder during the exchange of the coils by an operator or by a doffer. Thus, it is conceivable that before the change of the coils, the clutch is released by the operator or doffer or the actuating drive of the winding spindle, the clutch and the holder is fixed in the Parkhalte- tion. After removing the coils and reinserting empty sleeves then the holder is removed from the parking mount and reconnected to the coupling with the winding spindle.

In order to be able to manipulate the holder by a doffer, in a variant of the embodiment, the holder has a doffer coupling by means of which a doffer can grip the holder.

Furthermore, in a preferred embodiment, the coupling is rotatably mounted in the winding spindle at the end of the winding spindle in order to decouple the holder from the rotation of the winding spindle.

In a particularly preferred embodiment, coupling and holder cooperate via clamping surfaces. These clamping surfaces are aligned orthogonal to the axis of rotation of the winding spindle. The movement of the magnet from the change position to the connection position brings the clamping surfaces one above the other, whereupon the coupling is clamped by an axial movement of one of the clamping surfaces.

- A - An embodiment variant of this preferred embodiment has a mushroom-shaped latch, which has on its underside the clamping surface of the coupling. The holder has an opening with a lateral slot, which is aligned so that during the movement of the holder from the change position into the connecting position, the slot is guided under the mushroom, and are guided one above the other by the clamping surfaces. The clutch is then closed by attracting the fungus.

In a preferred embodiment, damping elements are provided between the winding spindle and the holder. From the prior art, various solutions are known to use damping elements. These can be friction surfaces, oil dampers or rubber elements, all of which fulfill the task of extracting energy from a movement. The damping elements can be provided between the winding spindle and the clutch, within the clutch or between the clutch and holder.

An embodiment will be described in more detail below with reference to the accompanying drawings.

They show:

1 is a view of the winding machine according to the invention,

FIG. 2 shows the front view of the winding machine according to the invention from FIG. 1, FIG.

Fig. 3 is a schematic sectional view of the projecting end of a winding spindle, Fig. 4 shows the holder for connecting the winding spindles. FIG. 1 shows the winding machine according to the invention from the side. Continuously tapering threads 28 are oscillated by means of traversing devices 29 in the direction of the reel axis, guided over a pressure roller 5 and wound into coils 9 spanned on a winding spindle 2.

In this case, the winding spindle 2, on which the coils 9 are wound, in a winding position 3. The winding spindle 2 is mounted together with another winding spindle on a rotatable Spulspindelträger 6. The growth of the bobbin diameter is compensated either by a continuous rotation of the Spulspindelträgers 6 or by a vertical movement of the pressure roller 5. In any case, however, the winding spindle 2 is brought from the winding position 3 in a bobbin changing position 4 when reaching the final diameter of the coil 9 by a rotation of the winding spindle 6, while at the same time the other winding spindle, which was previously in the bobbin changing position 4, in the winding position 3rd brought. Now, the full coils 9 can be removed axially over the freely projecting end of the winding spindle 2 and replaced with empty sleeves.

At the freely projecting end of the winding spindles 2, a holder 7 is provided, which connects the two winding spindles together. As a result, the oscillatory movement of the rotating winding spindle 2 is hindered on the projecting end. The holder 7 is connected by clutches 8 with the winding spindles 2. To change the bobbins 9, the holder 7 is separable from the winding spindle 2 by the coupling 8, at least on the winding spindle 2, which is located in the bobbin changing position 4.

A frame 1 fixes the components of the winding machine such as the winding spindle carrier 6 carrying the winding spindles 2, the pressure roller 5 and the traversing devices 29. FIG. 2 shows the front view of the winding machine shown in FIG. In particular, here the holder 7 is shown in its connection position 10 and change position 11. In the connecting position, the holder 7 connects the projecting ends of the two winding spindles 2 together. To remove the coils 9 and replace their sleeves, the holder 7 is transferred to the change position 11. For this purpose, the coupling 8 of the winding spindle 2 is opened in the bobbin changing position 4. This can be done either by the operator or doffer, which operates a provided on the clutch 8 development of the clutch 8. It is also possible that the clutch 8 is actuated together with the clamping means with which the coils 9 are tensioned on the winding spindle 2. Then, the holder 7 is brought by the operator or doffer in the change position 11, where the holder 7 is held by a connected to the rack Parkhalter 24. This prevents, on the one hand, that the holder 7, which is connected to the rotating winding spindle 2 in the winding position 3, hurls around in an uncontrolled manner. On the other hand, the damping of the projecting end of the winding spindle 2 in the winding position 4 continues to be ensured. In this case, the holder 7 may be suspended or clamped in the parking mount 24.

When the holder 7 is in the change position 11, the access to the winding spindle 2 in the bobbin changing position 4 is free, so that the coil 9 can be removed.

Figure 3 shows schematically and greatly simplified a section through the projecting end of the winding spindle 2. In a manner known from the prior art, the winding spindle 2 has radially extendable clamping means 16, with which the sleeves of the coil 9, not shown, clamped at its inner radius become. The radial movement of the clamping means 16 is effected via a cone which is driven by a tension spring 18 for an outward direction, and by a tensioning drive 15 for an inward direction. Connected to the tension drive 15 is the actuating drive 17 which actuates the clutch 8. Here, too, the system is designed for safety reasons so that there is a tensioned or clamped state in the event of a power failure.

At the projecting end in the winding spindle 2, the clutch 8 is provided, which is composed of a mushroom-shaped latch 14 with a rotatably mounted clamping plate 21 and an opposite rotatably mounted clamping plate 20 which is connected to the winding spindle 2. The rotatably mounted design of the clamping plates 20, 21 by means of the bearings 26 and 27 makes it possible to decouple the coupling 8 from the rotating winding spindle 2 and thus ensures the rotational degree of freedom of the winding spindle 2. The arrangement of the bearings 26 and 27 is only an example and may as well be provided at a different location. It is only important here that the coupling 8 and the winding spindle 2 are rotatably decoupled. Between the clamping plates 20, 21 and the bearings 26, 27 damping elements 25 are provided. These are in this case O-rings made of rubber, which cause a damping between the bearings 26, 27 and the clamping plates 20, 21. Here, too, other embodiments of a damping means, which are basically known from the prior art, can be used by other structural designs.

The clamping of the clutch 8 takes place in that the mushroom-shaped latch 14 is pulled into the winding spindle 2 into it. In this way, the holder 7, which was guided when moving from the connecting position 10 in the change position 11 of Figure 2 between the clamping plates 20 and 21, clamped by means of the clamping surfaces 22 and 23.

The release of the clamping of the clutch 8 is effected by an actuating drive 17 which counteracts the spring 19. The actuator drive 17 is connected in parallel with the tensioning drive 15, so that the clamping means 16 and the clutch 8 are actuated together.

As an alternative to the embodiment shown here, it is also possible to actuate the clutch by an external actuating means. This can be done by a doffer or operator.

Figure 4 shows again in plan view the holder 7. At both ends of the holder 7 clamping surfaces 23 which cooperate with the clamping surfaces 22 of the coupling of Figure 3. In order to insert the holder 7 in the coupling 8, the holder has lateral slots 12. It makes sense that the slots are arranged on the side corresponding to the direction of rotation of the winding spindle 2 in the winding position 3. This ensures that the bearing friction of the bearing 26 and 27 of Figure 3 ensures that the holder 7 is securely inserted into the clutch 8.

A Daftkupplung 13 makes it possible to manipulate the holder 7 by a doffer. For this purpose, the doffing clutch 13 provides mold elements to which a doffer can grip the holder 7.

LIST OF REFERENCE NUMBERS

1 frame

2 winding spindle

3 winding position

4 bobbin change position

5 pressure roller

6 winding spindle carrier

7 holders

8 clutch

9 coil

10 connection position

11 change position

12 slot

13 Doffing clutch

14 bars

15 tensioning drive

16 clamping devices

17 actuator drive

18 tension spring

19 clutch spring

20, 21 clamp plate

22, 23 clamping surface

24 parking holder

25 damping element

26, 27 bearings

28 threads

29 traversing device

Claims

claims

1. Winding machine for winding continuously tapered threads on spools (9), with two on a rotatable Spulspindelträger (6) arranged cantilevered winding spindles (2), and with a holder (7) of the winding spindles (2) on the cantilevered side connects to each other, wherein the winding machine clutches (8), by means of which for changing the coil (9) the connection between one of the winding spindles (2) and the holder (7) during operation separated and then re-connected, so that the holder (7) between a connection position (10) and a change position (11) can be changed, characterized in that the holder (10) is connected at least in the connection position (10) exclusively with the winding spindles (2).

2. Winding machine according to claim 1, characterized in that the clutches (8) are provided at the projecting end of the winding spindles (2) that the winding spindles (2) by means of a clamping drive (15) actuated te clamping means (16), and that the couplings (8) have an actuating drive (17) which cooperates with the tensioning drive (15) in such a way that the tensioning means (18) and the coupling (8) are actuated together.

3. Winding machine according to claim 1, characterized in that the couplings (8) have external actuating means.

4. Winding machine according to one of the preceding claims, characterized in that the winding machine has a parking mount (24), in which the HaI- ter (7) in the change position (11) can be used.

5. Winding machine according to one of the preceding claims, characterized in that the holder (7) has a doffer coupling (13) by means of which a doffer can manipulate the holder (7).

6. Winding machine according to one of the preceding claims, characterized in that the couplings (8) at the end of the winding spindles (2) rotatably mounted with the winding spindle (2) are connected.

7. Winding machine according to one of the preceding claims, characterized in that

Coupling (8) and holder (7) via clamping surfaces (22, 23) cooperate, which are orthogonal to the axis of rotation of the winding spindle (2) that the coupling (8) and holder (7) are formed so that the clamping surfaces (22 , 23) are brought by the movement of the holder (7) from the change position (11) to the connection position (10) in the position in which they cooperate, and that the coupling (8) is formed so that the actuation of the Coupling (8) leads to an axial movement of the clamping surface (22) of the coupling (8) in the direction of the clamping surface (23) of the holder (7).

8. Winding machine according to claim 7, characterized in that the coupling (8) with a mushroom-shaped latch (14) is connected, which protrudes from the end of the winding spindle (2) and when actuated movement of the coupling (8) is axially displaceable, and that the holder (7) has a lateral slot (12) which is arranged so that upon movement of the holder (7) from the change position (11) to the connection position (10 ) the slot (12) is pushed under the mushroom-shaped latch (14).

9. Winding machine according to one of the preceding claims, characterized in that between the winding spindle (2) and the coupling (8), between the holder (7) and the coupling (8), or within the coupling (8) damping elements (25) are provided.