Drive unit for a combing machine and combing machine with a drive unit

Abstract

The invention relates to a drive unit (1) for a combing machine of a spinning preparation apparatus, having a drive spindle (10) which can be driven by means of a drive motor (27) via a main drive wheel (11), a nipper shaft (12) which can be placed in an oscillating back-and-forth rotary motion using a crank rocker (13) which is connected to the main drive wheel (11), a coupling rocker (14) which is connected to the nipper shaft (12) so that the coupling rocker (14) can be moved in an oscillating rotary motion by the nipper shaft (12), and having a cylinder drive (16) which is provided for driving at least one cylinder (17, 18), and in which the cylinder drive (16) can be continuously driven by the drive spindle (10), and in which an oscillating motion can be introduced into the cylinder drive (16) by means of the coupling rocker (14), which oscillating motion can be superimposed on the continuous drive by means of the drive spindle (10) in the cylinder drive (16), so that a pirn motion can be carried out using an output shaft (19) of the cylinder drive (16). According to the invention, an adjustment drive unit (20) and a control motor (23) are provided, in which the output shaft (19) of the cylinder drive (16) is operatively connected to the adjustment drive unit (20), and in which the control motor (23) is provided for introducing a rotary motion into the adjustment drive unit (20), which rotary motion can be applied to the output shaft (19) of the cylinder drive (16) by means of the adjustment drive unit (20).

Description

TECHNICAL FIELD

[0001] The invention relates to a drive unit for a combing machine of a spinning preparation device. The invention in particular relates to a drive unit having a drive spindle which can be driven by means of a drive motor via a main drive wheel, a nipper shaft which can be placed in an oscillating back-and-forth rotary motion using a crank rocker arm connected to the main drive wheel, a coupling rocker arm connected to the nipper shaft, whereby the coupling rocker arm can be moved in an oscillating rotary motion by the nipper shaft, and wherein the drive unit further has a cylinder drive mechanism which is provided for driving at least one cylinder, and wherein the cylinder drive mechanism can be continuously driven by means of the drive spindle, and wherein an oscillating motion can be introduced into the cylinder drive mechanism by means of the coupling rocker arm, which oscillating motion can be superimposed in the cylinder drive mechanism on the continuous drive by means of the drive spindle, whereby a pirn format motion can be carried out using an output shaft of the cylinder drive mechanism. The invention also relates to a combing machine having a drive unit as described above. BACKGROUND

[0002] A drive unit for a combing machine of a spinning preparation device is known, for example, from DE 10 2012 011 030 A1 and has a drive spindle as the main structural component, which drives a nipper drive mechanism, wherein the nipper drive mechanism is provided for driving a nipper assembly having an upper nipper plate and a lower nipper plate. Furthermore, the drive unit has a cylinder drive mechanism for driving two cylinders which form a respective cylinder pair with a mating cylinder, between which cylinder pair a fiber product to be combed is guided, wherein the cylinder drive mechanism is usually configured in a manner known per se as a planetary gear mechanism.

[0003] The main challenge in designing such a drive unit is to generate the so-called pirn format motion for the cylinders of the combing machine and to influence the motion profile of the pirn format motion as simply as possible. In order to generate the pirn format motion, the planetary gear mechanism is continuously driven by means of the drive spindle with a continuous rotary motion. This continuous drive motion is superimposed with a further oscillating motion, which is likewise introduced into the cylinder drive mechanism by means of a slip joint lever unit, for example by means of a further component of the planetary gear mechanism, for example the sun wheel, whereby finally a pirn format motion can be generated on the drive output of the planetary gear mechanism, which is generally introduced directly into the cylinders. The oscillating motion is acquired by the oscillating nipper shaft by means of the slip joint lever unit, wherein this acquisition is achieved by means of the coupling rocker arm and further components, which is advantageous in terms of energy, since the oscillating nipper shaft is necessary in any case for driving the nipper assembly. The coupling rocker arm of the nipper shaft oscillating motion is received on an eccentric sleeve, which is rotatably received on the drive spindle.

[0004] The taker-in shaft is placed in an oscillating back-and-forth movement by means of a crank rocker, which is connected to a main drive wheel, runs along with the main drive wheel and is drivingly connected to a drive spindle, which is finally driven by a drive motor.

[0005] The taker-in drive can be configured as a planetary gear drive, and the taker-in is driven by a distributor stage, for example consisting of spur gears, identically by the output shaft of the taker-in drive, whereby the taker-in performs a fixed predetermined motion curve of the Pohlmann motion, which directly follows the motion curve of the output shaft of the taker-in drive. SUMMARY

[0006] The task of the present invention is to improve a drive unit of a combing machine for a spinning preparation device, wherein, starting from the drive structure, the motion curve of the Pohlmann motion can be influenced in a simple manner. This influence can be carried out, in particular, by means of an electrical control unit. Furthermore, the task of the present invention is to provide a combing machine having such an improved drive unit.

[0007] The present invention comprises the technical teaching that an adjustment drive unit and a control motor are provided, wherein the output shaft of the taker-in drive is operatively connected to the adjustment drive unit, and wherein the control motor is provided for introducing a rotational motion into the adjustment drive unit, which rotational motion can be applied to the output shaft of the taker-in drive by means of the adjustment drive unit.

[0008] The core idea of the present invention is to improve the drive unit of a combing head of a combing machine having an adjustment drive unit, which is operatively connected to a control motor, so that the curve progression of the Pohlmann motion in the taker-in can be influenced with an electrically operable control motor, while the basic curve progression of the Pohlmann motion of the output shaft of the taker-in drive remains unchanged. For example, the angular velocity and the angular acceleration of the phase progression of the taker-in can be changed over the combing interval.

[0009] The advantage of the arrangement of the adjustment drive unit on the output shaft of the taker-in drive according to the invention is the retrofitability, since the connection of the output shaft to the taker-in can be detached in a simple manner, and the adjustment drive unit according to the invention can be connected to the output shaft in order to finally set the taker-in on the drive output of the adjustment drive unit. The control motor can be configured as a structural unit with the adjustment drive unit, and with the control motor a specific rotational motion can be introduced into the adjustment drive unit, similar to the specific oscillating motion of the taker-in drive, which is introduced from the taker-in shaft via the coupling rocker.

[0010] The adjustment transmission unit is advantageously configured as a planetary gear mechanism, which is preferably provided in the drive train between the separating cylinder transmission mechanism and the separating cylinders. The configuration of the planetary gear mechanism forming the adjustment transmission unit can be identical to the configuration of the separating cylinder transmission mechanism, which can also be configured as a planetary gear mechanism.

[0011] According to the separating cylinder transmission mechanism, which is preferably in the form of a planetary gear mechanism, two adjustment transmission units according to the application can be provided on the output shaft of the separating cylinder transmission mechanism, which are driven by the output shaft, but have a respective control motor, so that the front separating cylinder and the rear separating cylinder can be operated separately and can have a different phase from one another. The adjustment can be made in such a way, in particular, that the phase of the rear separating cylinder follows the phase of the front separating cylinder, which can be achieved by means of the two control motors on the respective adjustment transmission unit.

[0012] According to a further advantageous embodiment of the application, the output shaft can be connected to the sun gear of the planetary gear mechanism forming the adjustment transmission unit.

[0013] Furthermore, the control motor can be connected to the planet carrier of the planetary gear mechanism forming the adjustment transmission unit.

[0014] It is also advantageous if the coupling rocker is mounted rotatably on an eccentric sleeve, through which the drive spindle extends and is connected to the circular comb shaft for driving the circular comb rollers. The adjustment transmission unit according to the application has a shaft group, the shafts of which extend parallel to the drive spindle and / or parallel to the circular comb shaft. Thereby, the transmission unit can be configured particularly compactly.

[0015] It is also conceivable that the separating cylinder transmission mechanism is coupled to the drive spindle by means of a transmission stage and is also coupled to the coupling rocker by means of a slip joint lever unit. The basic structure of the transmission unit can thus be designed in a structure type known per se, and the adjustment transmission unit according to the application can be easily retrofitted with the control motor.

[0016] According to a further aspect of the application, a control unit can be provided, with which the control motor can be operated to perform continuous or discontinuous, periodic and / or process-repeating rotational movements.

[0017] The control unit can be formed by an existing operating unit on the carding machine, or the control unit can be an integral part of the existing operating unit. By means of the control unit, which is designed as an interactive interface, for example, the control motor can be operated in order to adjust the phase of the pirn format movement of the separating cylinders in relation to the pirn format movement of the separating cylinder transmission mechanism.

[0018] The application also relates to a combing machine for a spinning preparation device with a drive unit according to the preceding description. Here, the combing machine can have a plurality of combing units each with a drive unit, wherein a control unit can be arranged centrally and can be configured for actuating all control motors of each drive unit. Of course, the plurality of drive units can be adjusted identically in each combing head, in particular with regard to the phase of the separating rollers, by identical actuation of the control motors, in particular by uniform operation of the control unit common to all combing heads. BRIEF DESCRIPTION OF DRAWINGS

[0019] The following further measures for improving the application are explained in more detail below together with the description of preferred embodiments of the application by means of the drawings.

[0020] In the drawings:

[0021] Figure 1 A drive unit for a combing machine of the prior art is shown,

[0022] Figure 2 A view of a drive unit for a combing machine is shown, the drive unit having an actuating drive unit and a control motor which are shown by way of example,

[0023] Figure 3 A graph is shown in which the curves of the phase of a front separating roller and the phase of a rear separating roller are plotted against time. DETAILED DESCRIPTION

[0024] Firstly described Figure 1 , Figure 1 A drive unit 1 of a combing machine for a spinning preparation device is shown, in which, again, the features described in Figure 2 and the associated reference numerals are taken into account, and in which the associated content of Figure 2 is not described again.

[0025] Figure 1 Both Figure 2 show the drive unit 1, in which Figure 1 the drive unit of Figure 2 represents the prior art, while the features of the application are described separately in

[0026] The drive unit 1 has a drive spindle 10, which is driven by means of a drive motor 27 via a main drive wheel 11. The drive motor 27 first drives an auxiliary shaft 30, which is a component of an auxiliary drive mechanism 31, wherein the auxiliary drive mechanism 31, for example, drives a table press roller 32 and, for example, a feed roller 33.

[0027] On the auxiliary shaft 30, a gear wheel 34 is mounted, which meshes with the main drive wheel 11 and which has a rigid connection to the drive spindle 10, so that this is likewise continuously driven in a rotary manner by the drive motor 27.

[0028] The drive spindle 10 cooperates with an intermediate transmission 35 with the circular comb shaft 21, by means of which the circular comb roller 22 is driven. Furthermore, the drive spindle 10 is connected with a transmission stage 25, by means of which the separating drum transmission 16 is continuously driven in order to drive the separating drums 17 and 18, wherein the separating drum transmission 16 is configured as a planetary gear transmission and the separating drums 17 and 18 are driven directly in a Pilger movement.

[0029] On the main drive wheel 11, a crank rocker 13 is arranged at an eccentric point, by means of which an oscillating movement is introduced into the platen shaft 12. The oscillating movement is transferred by the platen shaft 12 into a platen mechanism, which is not shown in detail, in order to oscillate the upper platen of the platen mechanism relative to the lower platen, in order to release and again hold a fiber strand between the upper platen and the lower platen.

[0030] The platen shaft 12 is also connected with the coupling rocker 14 by means of a coupling arm 36, and the oscillating movement of the platen shaft 12 is introduced into the coupling rocker 14 by means of the coupling arm 36, which is rigidly fastened on the platen shaft 12. Here, the coupling rocker 14 can perform a rotary pendulum movement on an eccentric sleeve 15, which is itself mounted rotatably on the drive spindle 10.

[0031] On the opposite side of the coupling at the coupling arm 36, the coupling rocker 14 is connected with the separating drum transmission 16 by means of a sliding hinge lever unit 26, so that with the pendulum movement of the coupling rocker 14, a discontinuous, but periodic pendulum movement is introduced into the separating drum transmission 16, which is superimposed on the continuous rotary movement caused by the drive spindle 10 and the transmission stage 25. As a result, the separating drums 17 and 18 can be driven with the required Pilger movement.

[0032] A brushless motor 37 is also shown for driving a cleaning brush 38, and a motor 39 is provided, which at least serves to drive two winding rollers 40, on which fiber coils are placed.

[0033] A coupling lever 28 is provided as a connection between the main drive wheel 11 and the eccentric sleeve 15. By means of the coupling lever 28, a rotary movement is introduced into the eccentric sleeve 15, which generates a forced rotation of the eccentric sleeve 15 depending on the rotation of the main drive wheel 11.

[0034] In contrast to Figure 1 , Figure 2A transmission unit 1 is shown, which is expanded in accordance with the application, having an adjustment transmission unit 20. The adjustment transmission unit 20 is connected on the output shaft 19 of the decoupler transmission 16, so that the Pirquet movement is already able to be introduced into the adjustment transmission unit 20 by the output shaft 19. The output shaft 19 is for this purpose connected with a sun wheel 29, which is a component of the decoupler transmission 16 configured as a planetary transmission.

[0035] If the control motor 23 is at rest, the decouplers 17 and 18 perform a Pirquet movement in a phase, which is also introduced into the adjustment transmission unit 20 by the output shaft 19.

[0036] If the control motor 23 is activated, it rotates the planet carrier 41 of the adjustment transmission unit 20 configured as a planetary transmission by means of the control shaft 42, so that the decouplers 17 and 18 ultimately perform a Pirquet movement according to a phase PI set in advance in front of or behind the output shaft 19.

[0037] If the control motor 23 is configured as a servo motor, for example, a phase P2 can be produced, which is different from the phase PI, especially between the reversal points Ul and U2, as shown in Figure 3 .

[0038] For this purpose, in Figure 3 the time t is plotted in ms on the abscissa, in which the decouplers 17 and 18 perform a rotational movement in the angle a. The latter is plotted on the ordinate. The control motor 24 is controlled by means of the control unit 24, especially by means of a touch-sensitive screen.

[0039] Unlike the application, if the decouplers 17, 18 are driven and controlled by means of one servo motor each, so that the angular velocity and the angular acceleration of the phase progression of each decoupler 17, 18 can be controlled individually, this has the disadvantage of high investment costs. The energy consumption is also increased, since the servo motor consumes a large amount of energy and heats up strongly due to the constant acceleration and braking at a rotational speed of more than 500 revolutions / min for the imitation of the Pirquet movement. The application is therefore based on the knowledge that a small phase deviation produced by the intervening adjustment transmission unit 20 with the control motor 23 is sufficient to achieve a phase deviation of up to + / - 10% of the nominal rotational speed with regard to the decouplers 17, 18. Since the nominal rotational speed and the necessary energy are already predetermined and present due to the transmission unit 1 or the decoupler transmission 16, only the difference of the movement deviation is introduced into the transmission unit 1. The investment costs are significantly lower than in the case of the use of a servo motor. The energy consumption is likewise significantly lower and the solution according to the application is retrofittable.

[0040] The application in its implementation is not limited to the preferred embodiments given above. Rather, a number of variants are conceivable which also use the described solution in principle in different types of embodiments. All features and / or advantages derived from the claims, the description or the drawings, including structural details or spatial arrangements, are not only essential in themselves but also in various combinations.

[0041] List of reference signs

[0042] 1 drive unit

[0043] 10 drive spindle

[0044] 11 main drive wheel

[0045] 12 clamp plate shaft

[0046] 13 crank rocker

[0047] 14 coupling rocker

[0048] 15 eccentric sleeve

[0049] 16 separation cylinder transmission

[0050] 17 separation cylinder

[0051] 18 separation cylinder

[0052] 19 output shaft

[0053] 20 adjustment transmission unit

[0054] 21 round comb shaft

[0055] 22 round comb shaft

[0056] 23 control motor

[0057] 24 control unit

[0058] 25 transmission stage

[0059] 26 slide-hinged lever unit

[0060] 27 drive motor

[0061] 28 coupling lever

[0062] 29 sun wheel

[0063] 30 auxiliary shaft

[0064] 31 auxiliary transmission

[0065] 32 table press roller

[0066] 33 delivery roller

[0067] 34 gear wheel

[0068] 35 intermediate transmission

[0069] 36 coupling arm

[0070] 37 squirrel cage motor

[0071] 38 cleaning brush

[0072] 39 motor

[0073] 40 winding roller

[0074] 41 planet carrier

[0075] phase of the p1 output shaft's poulter motion

[0076] phase of the p2 separation cylinder's poulter motion

[0077] u1 reversal point

[0078] u2 reversal point

[0079] a rotation angle

[0080] t time in ms

Claims

1. A drive unit (1) for a combing machine used in spinning preparation equipment, comprising: A drive spindle (10) is driven by a drive motor (27) via a main drive wheel (11). The clamp shaft (12) is capable of being placed in an oscillating reciprocating rotational motion by means of a crank rocker arm (13) connected to the main drive wheel (11). A coupling rocker arm (14) is connected to a clamp shaft (12), allowing the coupling rocker arm (14) to rotate oscillatingly via the clamp shaft (12). A separator cylinder drive mechanism (16) is configured to drive at least one separator cylinder (17, 18), wherein... The separator cylinder drive mechanism (16) can be continuously driven by the drive spindle (10), and wherein, The oscillating motion can be introduced into the separator cylinder drive mechanism (16) by means of a coupled rocker arm (14), and the oscillating motion can be superimposed in the separator cylinder drive mechanism (16) with the continuous drive by means of the drive spindle (10), so that the output shaft (19) of the separator cylinder drive mechanism (16) can perform Pierce motion, characterized in that, An adjustment transmission unit (20) and a control motor (23) are provided, wherein the output shaft (19) of the separator cylinder transmission mechanism (16) is effectively connected to the adjustment transmission unit (20), and wherein the control motor (23) is configured to apply the rotational motion to the output shaft (19) of the separator cylinder transmission mechanism (16) by means of the adjustment transmission unit (20) in order to introduce rotational motion into the adjustment transmission unit (20), wherein the adjustment transmission unit (20) is constructed as a planetary gear transmission mechanism, the planetary gear transmission mechanism being disposed between the separator cylinder transmission mechanism (16) and the separator cylinders (17, 18).

2. The transmission unit (1) according to claim 1, characterized in that, The output shaft (19) is effectively connected to the sun gear of the planetary gear transmission mechanism that forms the adjustment transmission unit (20).

3. The transmission unit (1) according to claim 1, characterized in that, The control motor (23) is effectively connected to the planet carrier (41) of the planetary gear transmission mechanism that forms the adjustment transmission unit (20).

4. The transmission unit (1) according to claim 2, characterized in that, The control motor (23) is effectively connected to the planet carrier (41) of the planetary gear transmission mechanism that forms the adjustment transmission unit (20).

5. The transmission unit (1) according to claim 1, characterized in that, The coupled rocker arm (14) is rotatably mounted on the eccentric sleeve (15), and the drive spindle (10) extends through the eccentric sleeve and is connected to the comb shaft (21) to drive the comb roller (22).

6. The transmission unit (1) according to claim 4, characterized in that, The coupled rocker arm (14) is rotatably mounted on the eccentric sleeve (15), and the drive spindle (10) extends through the eccentric sleeve and is connected to the comb shaft (21) to drive the comb roller (22).

7. The transmission unit (1) according to any one of the preceding claims, characterized in that, The separator cylinder drive mechanism (16) is coupled to the drive spindle (10) via a drive stage (25) and also to the coupled rocker arm (14) via a sliding hinge rod unit (26).

8. The transmission unit (1) according to claim 1, characterized in that, A control unit (24) is provided, which can be used to control the motor (23) to perform continuous or discontinuous, periodic and / or repetitive rotational movements.

9. The transmission unit (1) according to claim 7, characterized in that, A control unit (24) is provided, which can be used to control the motor (23) to perform continuous or discontinuous, periodic and / or repetitive rotational movements.

10. A combing machine for spinning preparation equipment, having a transmission unit (1) constructed according to any one of claims 1 to 9.

11. The combing machine according to claim 10, characterized in that, The combing machine has multiple combing units, each of which has a drive unit (1), wherein a control unit (24) is located in the center and is configured to operate all control motors (23) for each drive unit (1).

Images