EP0442066B1 - Drive for a spinning machine, in particular for a flyer - Google Patents

Description

The invention relates to a drive for spinning elements of a spinning machine, in particular for spools and / or wings of a flyer, which are mounted in a bank extending in the longitudinal direction of the machine and are driven in groups by toothed belt drives.

For driving wings and coils of flyers, it is known to arrange two parallel drive shafts under the wing bank and under the coil bank, which extend over the length of the machine. These shafts drive intermediate shafts via bevel gear drives, which are guided upwards at regular intervals and penetrate the coil bank and the wing bank. On the intermediate shafts used to drive the wings, toothed belt pulleys are rotatably arranged, which drive one or more wings via a toothed belt. The intermediate shafts used to drive the coils are designed as spline shafts, each of which drives a toothed belt pulley mounted in the coil bank. This toothed belt pulley then drives one or more spindles via a toothed belt, each of which receives a spool. The known drive requires considerable effort with regard to the production of shafts, shaft bearings, bevel gear drives and spline shafts or the like, to which a considerable amount of assembly work is added. The multiple deflections in the drive lead considerable energy consumption, while such a drive is relatively noisy.

From DE-A-36 22 215 a drive for winding spools carried by spool spindles in a double-sided, fixedly arranged creel of a threading machine without a delivery unit is known.

Above all, however, it is no longer possible with this type of construction to tilt the bobbin forward for conveniently removing full bobbins and fitting empty tubes, as is known, for example, from DE-C-28 38 398.

The invention has for its object to design a drive of the type mentioned in such a way that the coil bank is tiltable and is also structurally simple and requires a correspondingly low outlay in terms of manufacture and assembly.

This object is achieved in that at least one drive motor is mounted at least on the tiltable coil bank carrying the coils, which drives at least one coil via a toothed belt drive and that this driven coil in turn drives further coils via one or more toothed belt drives. In the sense of advantageously uniform construction, this drive can also be used on the wing bench supporting the wings.

Such a drive does not require shafts, shaft bearings and deflection gears running in the longitudinal direction of the machine, so that the structure is simple and inexpensive. The assembly is very simple. Above all, the reel bank can be tilted forward unhindered.

In order to ensure that the spinning elements are synchronized at the correct angle, electrical synchronization of the drive motors is provided, for example a corresponding frequency control of the drive motors, which are preferably designed as synchronous motors. The mechanical forced synchronization by means of the toothed belt ensures that the angular synchronism of the spinning elements is maintained even when it is switched off or in the event of a power failure.

Fig. 1

zeigt eine Ansicht in Maschinenlängsrichtung einer Flügelbank und einer Spulenbank mit zugehörigen Antrieben in der Betriebsstellung,

Fig. 2

eine Ansicht entsprechend der Ausführungsform nach Fig. 1 in einer Doff-Stellung, in welcher die Spulenbank in eine zur automatischen Entnahme der Spulen geeignete Stellung verschwenkt ist,

Fig. 3

eine Ansicht von oben auf die Flügelbank und den Antrieb der Flügel,

Fig. 4

eine Ansicht in Maschinenlängsrichtung einer Flügelbank und einer Spindelbank mit einem etwas abgewandelten Antrieb in der Betriebsstellung und

Fig. 5

eine Draufsicht auf die Flügelbank der Fig. 4 mit den zugehörigen Antrieben.

Further features and advantages of the invention result from the following description of the exemplary embodiments shown in the drawing and the subclaims.

Fig. 1

shows a view in the machine longitudinal direction of a wing bench and a reel bench with associated drives in the operating position,

Fig. 2

1 in a doff position, in which the spool bank is pivoted into a position suitable for automatic removal of the spools,

Fig. 3

a top view of the wing bench and the drive of the wing,

Fig. 4

a view in the machine longitudinal direction of a wing bench and a spindle bench with a slightly modified drive in the operating position and

Fig. 5

a plan view of the wing bench of FIG. 4 with the associated drives.

1 contains a wing bench (10) in which wings (13) are mounted in two staggered rows (11, 12) and a spool bench (14) in which also two rows (11, 12) spindles (15) are mounted in a corresponding arrangement. The coil bank (14) is carried on a holder (16) which can be moved up and down on vertical columns (17) by means of a drive (not shown). The coil bank (14) is connected to the holder (16) via a pivot axis (18) running in the machine longitudinal direction. Between the holders (16) and the spool bank (14) a plurality of hydraulic or pneumatic cylinders (19) are arranged, by their actuation the spool bank (14) from the operating position shown in FIG. 1 to the Doff position shown in FIG. 2 and can be pivoted back again. In this doff position, the coils (20), which are arranged on the reel spindles (15) in a rotationally fixed manner with their sleeves, are easily accessible for a doffing operation. In normal spinning the drawn roving, which comes from a drafting device, not shown, axially enters the heads of the wings (13) and is then guided in one of the wing arms to a pressure finger (21), from which it is then transferred to the bobbins (20) .

The drive for the spindles (15) is designed as a so-called group drive, which contains a plurality of electric drive motors (32), each of which is used to drive a group of spindles (15), the drive motors (32) being identical to one another and on the Drive an equal number of spindles (15) is designed. The drive motors (32) are attached to the outside of the coil bank (14). They are provided on their motor shaft with a toothed belt pulley (33) which drives a toothed belt (34) which is wrapped around a toothed belt pulley (35) which is connected in a rotationally fixed manner to a spindle (15). In the embodiment shown in FIGS. 1 to 3, every sixth spindle (15) of one row, namely row (12), is driven by such a toothed belt drive. The drives of the other spindles (15) are derived from the spindle, which is driven directly by a drive motor (32), and are grouped together. As can be seen from Fig. 1, the directly driven spindle (15) is rotatably connected to a further toothed belt pulley (37), which drives two further toothed belt pulleys (39) via a toothed belt (38) that wraps around it and which rotates with spindles ( 15) of the opposite row (11) are connected. From this first group of three, which is formed from the directly driven spindle (15) and in two opposite spindles (15) of the row (11), the next spindles of the same row (11) and the opposite row (12) are in each case via toothed belt drives. driven. The spindles (15) of the row (11) are provided with toothed belt pulleys (39, 39 '), one above the other, connected to them in a rotationally fixed manner, a toothed belt (38') being wound around the toothed belt pulley (39 '), which, apart from this 1 and 2 by the toothed belt pulley (35) hidden toothed belt pulley of a spindle (15) of the series (12) and another toothed belt pulley (39 ') a spindle (15) of the series (11th ) wraps around, ie again three toothed belt pulleys. The spindles and thus the toothed belt pulleys are - as can be seen from FIG. 3 - in the corner points of an approximately isosceles triangle. The timing belt pulleys on the individual spindles are offset in height.

As can be seen in particular from FIG. 3, a total toothed belt drive containing a plurality of individual toothed belts is created in this way, in which all spindles (15) of both rows (11, 12) are mechanically coupled to one another, so that angularly accurate synchronism is ensured. The electric drive motors (32) are expediently electrically synchronized, in particular by means of a frequency control.

Since the drive motors (32) are attached to the spool bank (14), the spool bank (14) can easily be pivoted out of the operating position (FIG. 1) into the doff position (FIG. 2) and back again without this being caused by the drive is hindered. The drive of the individual coil spindles (15), like that of the wings (13), is positively synchronized. Electrical synchronization between the drive motors (32) is also advantageously provided here. In addition, there is an electrical speed control of these drive motors (32), the speed of which must be adapted to the degree of filling of the coils (20). It should be noted here that in the majority of cases there are always several drive motors (22) for the wings (13) and also several drive motors (32) for the coil spindles (15). With a short flyer, however, only one drive motor (22) for the wings (13) and one drive motor (32) for the coil spindles (15) can be sufficient.

The drive of the wings (13) is constructed according to the same principle according to which the spindles (15) are driven. At regular intervals on the wing bench (10), electric drive motors (22) designed for the same power are attached, which drive a wing (13) of the row (12) directly via a belt drive. For this purpose, the electric motors (22) are provided on their motor shafts in a rotationally fixed manner with toothed belt pulleys (23) which, via a toothed belt (24), drive a belt pulley (25) which is connected in a rotationally fixed manner to a wing (13). A further toothed belt pulley (27) is rotatably attached to the same wing (13) and also drives two wings (13) of the opposite row (11) via a toothed belt (28), since the toothed belt (28) is connected to this wing (13 ) non-rotatably arranged toothed belt pulleys (29) is looped. The drives to neighboring groups of three are derived from this belt drive (27, 28, 29) as shown in FIG. 3. The wings (13) of the row (11) are each provided with two toothed belt pulleys (29, 29 ') arranged one above the other, a toothed belt (28') running around the toothed belt pulleys (29 '), each leading to the adjacent group of three. In this way, an uninterrupted overall belt drive is also created for the wings (13), in which drive energy is introduced at regular intervals via electric drive motors (22).

The embodiment according to FIGS. 4 and 5 corresponds in principle to the embodiment according to FIGS. 1 to 3. As far as the same reference numerals are used here as in the embodiment according to FIGS. 1 to 3, these relate to elements already described without the description being repeated here becomes. For the wings (13) mounted in the wing bank (10) as well as for the coil sleeves mounted in the coil bank (14), a group drive is again provided in each case, which drives several individual electrical units distributed in the machine longitudinal direction Contains drive motors (22 and 32). In this embodiment, these drive motors (22, 32) are not attached to the outside of the wing bench (10) and the coil bench (14), but rather are integrated into them, so that a certain saving in installation space is obtained. The drive motors (22, 32) again drive a toothed belt pulley (25, 35) via toothed belt pulleys (23, 33) and a toothed belt (24, 34), which are non-rotatably arranged on their motor shafts and are connected to a wing (13) or a spool 15) are non-rotatably connected.

As can be seen from Fig. 5, groups of four of wings (13) and spool spindles (15) are driven by belt drives, which are derived from the individually driven wings (13) and spool spindles (15). Each wing (13) is provided with two toothed belt pulleys (40, 40 'and 41, 41') arranged one above the other and non-rotatably connected to it, into which toothed belts (42, 42 ') which each drive four wings (13) engage. Of course, only each wing (13) needs to be provided with two pulleys (40, 40 'and 41, 41') which are each wrapped by two toothed belts (42, 42 '), i.e. in a row (11 and 12) only every second wing. As can be seen from Fig. 4, the wings (13), which are driven directly, in the embodiment shown have three superposed pulleys (25, 41, 41 '). In a modified embodiment it is provided that the direct drive by means of an electric drive motor (22) takes place on one of the wings (13) of a group of four at the point where otherwise only a toothed belt (42, 42 ') around the corresponding wing ( 13) is performed.

The drive of the coil spindles (15) of the embodiment according to FIG. 4 is identical to the design of the drive for the wings (13). Toothed belt drives (43, 43 ') are also provided for each of the coil spindles (15), each of which encloses four diamond-shaped coil spindles (15).

4 and 5 the supply roller pair (44) of a drafting system is still indicated. 5 that the incoming roving can be guided in such a way that the arrangement of the electric motors (22) does not interfere. As can be seen from FIG. 5, a modification has been made compared to FIG. 4 in that the electric motor drives a wing (13) of the row (11) facing the drafting device (44), while FIG. 4 shows that the drive motor (22) drives a wing (13) of the row (12). However, this is irrelevant to the principle of the drive.

Even if the embodiment for the drive of the wings (13) and for the drive of the coil spindles (15) is of the same design, this is not absolutely necessary. For example, it is possible to provide the wings (13) with a drive in accordance with the exemplary embodiment according to FIGS. 1 to 3, while the coil spindles (15) are provided with a drive in accordance with FIGS. 4 and 5. Reverse training is also possible. Furthermore, it is also possible to provide only the wings (13) or only the coil spindles (15) with the group drive according to the invention. However, this is particularly preferred for driving the coil spindles (15).

Claims (6)

1. Drive for bobbins (20) carried by bobbin spindles and/or flyers (13) of a flyer assembly which, in each case, are mounted in a fixed flyer rail (10) or movable bobbin rail (14) extending in the longitudinal direction of the machine and which are driven in groups by means of toothed-belt drives (37, 38, 39), characterized in that the bobbin rail (14) is mounted tiltably forwards and there is attached to the bobbin rail (14) at least one drive motor (32) which drives at least one respective bobbin spindle (15) via a toothed-belt drive (33, 34, 35), and in that this driven bobbin spindle (15) itself drives groups of bobbin spindles via one or more toothed belt drives (37, 38, 39; 43, 43').
2. Drive according to Claim 1, characterized in that there is attached also to the flyer rail (10) at least one drive motor (22) which drives at least one respective flyer (13) via a toothed-belt drive (23, 24, 25), and in that these driven flyers (13) themselves drive groups of further flyers via one or more toothed-belt drives (27, 28, 29).
3. Drive according to Claim 1 or 2, characterized in that a respective spinning element (13, 15) of one group is surrounded by the toothed belt (28, 28'; 38, 38'; 42, 42'; 43, 43') of the preceding group and a spinning element is also surrounded by the toothed belt of the following group.
4. Drive according to one of Claims 1 to 3, characterized in that the spinning elements (13, 15) are arranged in two rows (11, 12) offset relative to one another, and in that one toothed belt (28, 28'; 38, 38') surrounds spinning elements (13, 15) forming the corner points of a triangle.
5. Drive according to Claim 4, characterized in that the spinning elements (13, 15) of one row (11) are respectively surrounded by two toothed belts (28, 28'; 38, 38'), and in that the drive motors (22, 32) together with their toothed-belt drives are assigned respectively to the spinning elements (13, 15) of the other row (12).
6. Drive according to one of Claims 1 to 3, characterized in that the spinning elements (13, 15) are arranged in two rows (11, 12) offset relative to one another, and in that a common toothed belt (42, 42'; 43, 43') respectively surround two spinning elements of each row (11, 12).

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