JP2015521240A - A device on the comb having a drive for generating a pilgrim movement for the drawing roller - Google Patents

Abstract

A device provided in the comb having a drive for generating a pilgrim step movement for the pulling roller of the comb, a first electric motor rotating in a uniform movement and a second rotating the shaft Having an electric motor, in which case the second shaft supports a component for transmitting movement to the drawing roller, the first electric motor also acting on some of the components of the control gear mechanism, The control gear mechanism transmits the motion to the drawing roller, and the second motor is equipped with a driving means, and the driving means follows a law of motion having an acceleration phase and a deceleration phase. The two motors are always engaged and rotate continuously in the same direction, and the rotational movement is the result of the “pilgrim steering” in the drawing roller. To obtain a movement of the flop "type, combined with de Ferre down Shall device. In order to improve the degree of freedom in forming the motion curve of the drawing roller and to enable higher combing efficiency, the second electric motor is a servo motor, and the servo motor is the first electric motor. It converts uniform motion into non-uniform rotational motion and is connected to an electronic open loop control and / or closed loop control device. [Selection] Figure 1

Description

  The present invention relates to a device provided in a comb having a driving device for generating a pilgrim step motion for a pulling roller of the comb, and a first electric motor that rotates in a uniform motion, and a shaft that rotates. Having a second electric motor, in which case the second shaft supports a component for transferring motion to the drawing roller, the first electric motor also acting on some of the components of the control gear mechanism; The control gear mechanism transfers the motion to the drawing roller, the second motor has drive means, and the drive means follows a one-way law of motion having an acceleration phase and a deceleration phase, in which case the first Both the motor and the second motor are always engaged and rotate continuously in the same direction, and that rotational movement results in the “Pilgrims To generate-up "movement are combined by di Ferre down Shall device.

In known combs, a circular combing roller is continuously driven by a drive motor.
The drawing cylinder is first rotated backward through a predetermined angle and then forwardly through another larger angle within each nipping, i.e. usually during each rotation of the circular combing roller. Must be (pilgrim step exercise).
This movement of the drawing cylinder is derived in a known comber from the rotation of a circular combing roller via a mechanical gear mechanism.

The pilgrim step motion of the drawing cylinder is generated by a planet gear mechanism (differential gear mechanism) in a classic comb.
There, a non-uniform oscillating rotational motion is superimposed on a uniform rotational speed (eg 20).
Inhomogeneous rotational movement results in the prior art from, for example, crank vibrations, cam gear mechanisms or non-circular gears.

In a known device (Patent Document 1), there are first and second electric motors.
The first electric motor drives part of the components (gear, shaft) of the differential gear mechanism with uniform unidirectional rotational movement. The second electric motor drives a part of the components of the differential gear mechanism in the same manner with a rotational movement in one direction, in which case the rotational movement of the second electric motor has an acceleration phase and a deceleration phase. ing.
The rotational movements of the two electric motors are combined so that the uniform rotational movement of the first electric motor is converted into a uniform rotational movement in cooperation with the rotational movement of the second electric motor.
This rotational movement is transmitted via the drive shaft to the drawing roller, which changes its direction of rotation in the form of a “pilgrim step” movement.
The disadvantage of this device is that the rotational movement of the two electric motors is defined.
Thereby, the degree of freedom in the formation of the movement curve of the drawing roller is severely limited, in particular the second electric motor follows a defined inherent law of motion.
In that case, in the course of rotation, there is only a light acceleration followed by a light deceleration with respect to the average value, so that only a light reverse movement and a light forward movement of the drawing roller are possible.
In order to bring about a change in the movement curve of the drawing roller, it is necessary to intervene in the structural and mounting to the differential gear mechanism, ie by exchanging gears.

European Patent Application EP1213380A

  The object of the present invention is therefore to provide a device of the kind mentioned at the outset which avoids the drawbacks mentioned above, in particular allows an increased degree of freedom in the formation of the movement curve of the drawing roller and allows higher efficiency of the comb It is to be.

  This problem is solved by the features of the characterizing part of claim 1.

The device according to the invention allows the adjustment and modification of the movement sequence of the drawing roller in a simple and preferred way, without intervention in the gear function. In particular, the degree of freedom in forming the movement curve of the drawing roller is significantly improved.
As the demand for the nipping rate becomes higher and higher, the efficiency of the comb is continuously improved. Furthermore, an adjustment with a change in the movement sequence is preferably possible in the adjustment device (display).

  Claims 2 to 26 include preferred developments of the present invention.

  Hereinafter, the present invention will be described in detail using embodiments shown in the drawings.

It is a side view which shows typically the combing head of the flat type comb which has the drive device of a drawing roller. It is a block circuit diagram of an electronic open loop control and a closed loop control apparatus, Comprising: A display apparatus, the 1st electric motor, and the 2nd electric motor are connected to the apparatus. 1 is a cross-sectional view schematically showing a first embodiment of an apparatus according to the present invention. FIG. 3 is a cross-sectional view schematically showing a second embodiment of the apparatus according to the present invention. It is a graph which has a curve transition of the drawing roller motion during nipping. The drive scheme is the same as in FIG. 1, but the first electric motor further drives the circular combing roller.

The combing head shown in FIG. 1 has a circular combing roller 2 that supports a circular combing segment 3 that can be continuously rotated by a drive motor 1, and a nipper device that includes a lower nipper 4 and an upper nipper 5.
The lower nipper 4 is linked to a front stay 6 that can swing around the axis of the circular combing roller 2 at its front end, and is linked to a nipper arm 7 at its rear end. The nipper arm is mounted on a nipper shaft 8 that can swing back and forth.
The upper nipper 5 can swing about the shaft 9 with respect to the lower nipper 4.
Furthermore, the combing head has two drawing rollers 10 and 11 and a drawing roller pair 14, and drawing pressing rollers 12 to 13 are placed on the drawing rollers, respectively.

A wrap W to be rolled is supplied from a wrap roll 15 mounted on two rotatable winding rollers 16 and 17 to an intermittently rotatable supply cylinder 18 that is supported in the lower nipper 4. The
In the retracted position (not shown) of the nipper devices 4, 5, the nipper device is closed and secures the front end portion of the wrap W in the form of a fiber fringe protruding from the nipper devices 4, 5. To do.
The fiber fringes are squeezed out by a circular combing segment 3 on a rotating circular combing roller 2.
Next, the nipper devices 4, 5 are moved to the open position shown in the drawing.
In the meantime, the drawing rollers 10, 11 are rotated backward through a predetermined angle, whereby the rear end portion of the fiber web F that has been sown in front of the drawing cylinder 10 with the drawing pressure roller 12. It is ejected backward (toward the nipper device) from the tightening point.
Next, when the drawing rollers 10 and 11 are rotated forward, the fiber fringe squeezed out by the circular combing segment 3 rests on this terminal portion, and again has the drawing pressing roller 12 together with the terminal portion. The roller 10 is pulled into the tightening point.
The drawing rollers 10, 11 are rotated forward through a second predetermined angle, the second angle being greater than the predetermined initial angle, for example about twice as large. In that case, the drawing roller pulls out the fiber fringe from the wrap in the nipper devices 4 and 5.
In that case, the fiber fringes are usually drawn through a stationary comb (not shown).

Accordingly, the draw rollers 10, 11 must first be rotated backward by a predetermined angle within each combing cycle and then rotated forward by another larger predetermined angle.
This movement is called a pilgrim step movement. According to the present invention, two electric motors 1 and 19 and a comb gear mechanism 20 are provided to rotate the drawing rollers 10 and 11 by the above-described Pilgrim step motion.

The device according to the invention having a drive for generating a pilgrim step movement for the drawing rollers 10, 11 comprises a first electric motor 1, which rotates in a uniform movement, and The control gear mechanism 20 is driven. A second electric motor 19 rotates the shaft, which supports the components for transmitting motion to the drawing rollers 10, 11 (see FIGS. 3 and 4).
The first electric motor 1 also acts on some of the components of the control gear mechanism 20, which transmits the movement to the extraction rollers 10, 11.
The second electric motor 19 follows a one-way motion law having an acceleration phase and a deceleration phase in driving.
Both the first electric motor 1 and the second electric motor 19 are always engaged, and continuously rotate in the same direction, for example, clockwise. The rotational movement is combined, for example by means of a differential device (see FIGS. 3 and 4), in order to obtain the resulting “pilgrim step” type movement in the drawing rollers 10,11.

  The second electric motor 19 is a servo motor, for example a multiphase AC synchronous motor, which converts the uniform movement of the first electric motor 1 into a non-uniform rotational movement, and electronic open loop control and And / or connected to a closed loop control measure 21, for example a computer having a microprocessor.

According to FIG. 2, the electronic open-loop control and / or closed-loop control device 21 has a central process unit 22 (CPU) and a memory unit 23. An electronic open loop control and / or closed loop control device 21 is connected to an input device 24, a display member 25, the first electric motor 1, and the second electric motor 19.
Between the electronic open-loop control and / or closed-loop control device 21 and the first electric motor 1 and between the second electric motor 19, power converters 26 to 27 are arranged, respectively.

According to FIG. 3, a differential gear mechanism including a casing 30 that goes around as a control gear mechanism 20 is provided, and the casing is rotatably supported on a bearing 31 on one side.
In this case, the bearing 31 is supported on a central shaft 32, and the central shaft is rotatably supported in a machine frame (not shown).
The casing 30 is rotatably supported in the bearing 33 on the other side.
In that case, the bearing 33 is supported on the hollow shaft 34. A ring gear wheel 35 is provided in the casing 30 that goes around, and is firmly connected to the web 30.

A gear 38 meshes with the ring gear wheel 35 via an intermediate wheel 36 and is drive-coupled.
The intermediate wheel 36 is rotatably supported in the machine frame via its shaft 37 in the bearing.
The intermediate wheel 36 is fixed to a drive shaft 39 that is supported in the machine frame via a bearing portion (not shown) so as not to be relatively rotatable.
At a distance from the gear 38, another gear 40 is fixed on the drive shaft 39, and the gear is drivingly coupled to the gear 41 of the first electric motor 1.
In this case, the gear 41 supported in the machine frame via the shaft 42 is driven by the gear 43, and the gear is drivingly coupled to the central gear unit 45 via the shaft 44.
The gear unit 45 is driven by the first electric motor 1 via a drive coupling 46 shown schematically.
Instead of the gear combination shown, a belt drive can also be used.

The drawing rollers 10, 11 are driven on the one hand via a uniformly driven gear 38 which rotates the ring gear wheel 35 of the web 30 via an intermediate wheel 36.
Due to this rotational movement, the bearing housing portions 47 to 50 coupled to the web 30 are also moved, and the planet wheels 53 to 56 are rotatably supported through the shafts 51 and 52 in the bearing housing portions.
In this case, the planet wheels 53 and 54 are drivably coupled to the sun wheel 57, and the sun wheel is fixed on the shaft 32 so as not to be relatively rotatable.

The sun gear 58 of the gear stage of the differential gear mechanism 20 is firmly connected to a hollow shaft 34 rotatably supported on the shaft 32 on which the hollow shaft is rotatably supported via a bearing. It is supported by.
Planet wheels 55, 56 distributed on the circumferential surface of the sun wheel 58 and supported in the web 30 are drivably coupled to the sun wheel 58. In that case, the planet wheels 55 and 56 are coupled to the planet wheels 53 and 54 via the shafts 51 and 52.

A gear 59 is fixedly attached to the opposite end of the hollow shaft 34, and the gear is drivingly coupled to the gears 60 and 61.
The gears 60 and 61 are coupled to the drawing rollers 10 and 11 via shafts 62 and 63.
The drawing rollers 10 and 11 to the shafts 62 and 63 are supported in the machine frame via bearings.

According to FIG. 3, the shaft 32 to which the sun wheel 57 is fixed is simultaneously the output shaft of the gear stage 67 having the circular gears 64 and 65 connected to the front stage of the differential gear mechanism 20. The gears mesh with each other inside a housing (not shown).
In this case, the gear 65 is fixed on the shaft 32 so as not to be relatively rotatable. The gear 64 is fixed on the shaft 66 so as not to rotate relatively, and is attached to the other end of the shaft so that the second electric motor 19 is driven. The rotation axes of the shafts 32 and 66 extend in parallel with each other.

The uneven rotational movement of the second electric motor 19 in the gear stage 67 is transmitted to the sun wheel 57 via the shaft 32.
At the same time, a uniform rotational motion is transmitted from the gear 41 via the gear 40 to the shaft 39 and accompanying gear 38.
The gear 38 transmits this uniform rotational movement to the casing 30 of the differential gear mechanism 20 via the intermediate gear 36 and the ring gear wheel 35, whereby the planet wheels 53 and 54 are moved around the sun wheel 57. The
In that case, an uneven rotational movement of the planet wheels 53, 54 is brought about, which transmits them to the planet wheels 55, 56 that are connected to it.
The planet wheels 55, 56 transmit the non-uniform motion (pilgrim step motion) thus generated to the sun wheel 58, which transmits it via the shaft 34 and the gear 59 to the drawing rollers 10, 11. Are transmitted to the gears 60 and 61.

To the extent that the embodiment shown in FIG. 4 corresponds to the embodiment shown in FIG. 3, the same reference numerals are used in FIGS.
The embodiment shown in FIG. 4 differs from that of FIG. 3 in that instead of the gear stage 67, the second electric motor 19 drives the shaft 32 directly without intermediate means.
The shaft 32 and the drive shaft of the second electric motor 19 extend coaxially.

By using the second electric motor 19 in accordance with the present invention for non-uniform driving of the differential gear mechanism 20, the transition curve (FIG. 5) of the drawing roller can be optimized. It is.
The freedom to form provides optimal working conditions in order to obtain the advantages already described and other advantages.

According to FIG. 6, the first electric motor 1 drives the circular combing roller 2 in addition to the control gear mechanism 20.
The first electric motor 1 can also drive (in a manner not shown) other main elements of the comb, for example nipper devices 4, 5.
The movements of the driven components are synchronized, for example via electronic open loop control and / or closed loop control device 21.

Claims (26)

A device provided in the comb having a drive for generating a pilgrim stepping motion for the pulling roller of the comb;
A first electric motor that rotates in a uniform motion and a second electric motor that rotates the shaft, the second shaft supports a component for transmitting motion to the draw roller;
The first electric motor also acts on some of the components of the control gear mechanism that transfers motion to the draw roller;
The second motor is equipped with driving means, and the driving means follows a one-way law of motion having an acceleration phase and a deceleration phase,
Both the first motor and the second motor are always engaged, rotate continuously in the same direction, and the rotational movement of the resulting pilgrim step type In order to get movement, combined with a differential device,
The second electric motor (19) is a servomotor, which converts the uniform movement of the first electric motor (1) into a non-uniform rotational movement, and electronic open-loop control and / or Connected to a closed loop control device (21),
A device provided in a comber characterized by that.   The apparatus according to claim 1, wherein the servo motor is a multiphase AC synchronous motor.   Device according to claim 1 or 2, characterized in that the open-loop control and / or the closed-loop control (21) comprises a computer (22), in particular a microprocessor.   4. The device according to claim 1, wherein the open-loop control and / or the closed-loop control (21) comprises a memory device (23). 5.   5. A device according to any one of the preceding claims, characterized in that an input device (24) is connected to the open loop control and / or closed loop control (21).   6. A device according to any one of the preceding claims, characterized in that a display member (25) is connected to the open loop control and / or the closed loop control (21).   7. A device according to any one of the preceding claims, characterized in that the first electric motor (1) is connected to the open loop control and / or closed loop control (21).   8. The electronic open-loop control and / or the closed-loop control can generate an operation signal for the drive unit (second electric motor). The device described in 1.   9. The device according to claim 1, wherein the start of the drawing process can be adjusted by an operation signal in the drive unit.   The apparatus according to claim 1, wherein the pull-out length is adjustable by an operation signal in the drive unit.   The apparatus according to any one of claims 1 to 10, wherein an extraction speed is adjustable by an operation signal in the drive unit.   The apparatus according to claim 1, wherein the vertical interval can be adjusted by an operation signal in the drive unit.   Device according to any one of the preceding claims, characterized in that adjustment of the movement sequence is possible at the input device.   14. A device according to any one of the preceding claims, characterized in that the movement sequence can be changed at the input device.   2. The open loop control and / or the closed loop control generates a drive pulse for supply to a second electric motor, the drive pulse being synchronized with the motion of the nipper device. The apparatus according to any one of 14.   The open-loop control and / or closed-loop control generates a drive pulse for supply to the second electric motor, the drive pulse being synchronized with the rotation of a circular combing roller. The apparatus according to any one of 1 to 15.   17. The length and / or amplitude and / or number of drive pulses can be adjusted within the open loop control and / or closed loop control device. apparatus.   The apparatus according to claim 1, wherein the servo motor drives a gear of a gear stage.   The apparatus according to claim 1, wherein the servo motor drives a geared toothed belt wheel.   20. A device according to any one of the preceding claims, wherein the servomotor directly drives a drive shaft for a sun wheel. The differential device has a planet gear mechanism,
The planet gear mechanism has at least one planet wheel;
The planet wheel is freely attached to the drive disk,
In that case, the planet gear mechanism is freely mounted on the shaft coupled with the second motor,
21. Apparatus according to any one of claims 1 to 20, characterized in that   22. A device according to any one of the preceding claims, wherein the planet gear mechanism has gears, the gears mesh with the corresponding gears and is rotated by a first motor. . A planet wheel mounted on the drive disk in the planet gear mechanism is free and rotated by the rotation of the shaft through cooperation with the pinion, and the planet wheel transmits its movement to the drawing roller In order to be coupled with other planet wheels via a drive disk,
23. Apparatus according to any one of claims 1 to 22, characterized in that   24. A planet wheel transmits its movement to a transmission member via a pinion, said transmission member being free and coupled to a drawing roller via its gear. The apparatus according to claim 1.   25. The device according to claim 1, wherein the drive unit for the control gear mechanism has a gear stage with round gears.   26. A drive unit for a control gear mechanism has a gear stage with a rounded toothed belt wheel and an endless toothed belt. Equipment.

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