CN1266918A

CN1266918A - Single spindle drive type twisting frame

Info

Publication number: CN1266918A
Application number: CN00102933A
Authority: CN
Inventors: 黑田佳儿
Original assignee: Murata Machinery Ltd
Current assignee: Murata Machinery Ltd
Priority date: 1999-03-12
Filing date: 2000-03-09
Publication date: 2000-09-20
Anticipated expiration: 2020-03-09
Also published as: KR20010014541A; CN1304660C; JP2000265336A; KR100500039B1; JP3384351B2

Abstract

This machine is obtained by installing a load detecting means for detecting the load on a driving motor, a voltage detecting means for detecting the fluctuation in a power source voltage for feeding an electric power to the driving motor and a motor controller for monitoring the load fluctuation detected with the load detecting means, monitoring the fluctuation in the power source voltage from the voltage detecting means and detecting the presence or absence of the yarn breakage of each yarn to be twisted from the fluctuation both in the load and the power source voltage in the single spindle driving type twist texturing machine equipped with the driving motor for each spindle unit for imparting twists to the yarn. To provide a single spindle driving type twist texturing machine capable of preventing malfunction of the detection of yarn breakage at the time of fluctuation just after starting the twist texturing or on the side of a power source voltage.

Description

Single spindle drive type twisting frame

The present invention relates to the twisting frame of two-for-one twister or ring spinning frame etc., the single spindle drive type twisting frame that when particularly breaking end this ingot is stopped driving each ingot.

In the past, two-for-one twister adopted many ingots of twisting apparatus structure arranged, and this twisting apparatus is provided with batching apparatus above the spindle device.

The spindle device by the fixed disk that is used to support the yarn feeding package, be arranged on the rotating disc that yarn feeding is twisted of fixed disk bottom and the CD-ROM drive motor of rotating disc rotation formed.

The yarn that is supported in the yarn feeding package on the fixed disk is in shredding, after applying tension force by tensioner, axle center by the yarn feeding package, radially protruding next from rotating disc, Yi Bian form air ring, Yi Bian pass through the air ring thread-carrier in axle center once again, twist, through the yarn feeding of twisting, on one side by batching apparatus it is traversed, Yi Bian be wound up on the coiling package that rotates on the cylinder.

In this two-for-one twister, each CD-ROM drive motor is driven by controller for motor.

This controller for motor AC/DC transverter, the current transformation of the AC power of the source power supply of forming from converter is become direct current, with the transistor of controller for motor the electric current of this dc source is carried out ON-OFF control, make its interchange that becomes changeable frequency, drive this CD-ROM drive motor.In addition, the rotation of this CD-ROM drive motor detects with the sensor of not representing among the figure, for load change, CD-ROM drive motor is carried out pivotally according to the rotation mode of setting, and carries out FEEDBACK CONTROL with controller for motor.

In this two-for-one twister, owing to be to drive each spindle device respectively, thereby the spindle that broken end takes place do not allow yarn form air ring, can reduce the load of CD-ROM drive motor sharp.Thus, the controller for motor of this spindle detects this with current sensor etc., and the rotation of CD-ROM drive motor is stopped.

But, even under the occasion that do not break end, air ring did not reach between stationary phase when the spindle device starts, or when moment stops, during owing to get muddled from variation in voltage, the air ring of source power supply, the load of CD-ROM drive motor also can change, thereby, even twisting apparatus adds man-hour normally carrying out twist yarn, also have unavoidably and be used as the false judgment that stops CD-ROM drive motor that broken end takes place.

Therefore, the purpose of this invention is to provide a kind of single spindle drive type twisting frame that can address the above problem, its can prevent twist yarn processing just begun after or broken end detects during power supply voltage variation false judgment.

The 1st kind of scheme of the present invention who makes is in order to achieve the above object, a kind of single spindle drive type processing machine of twisting thread is provided, it is to be provided with CD-ROM drive motor on each spindle device that every sliver is twisted, it is characterized in that, be provided with: the Weight detector that is used to detect the load of CD-ROM drive motor; Be used to detect voltage check device and controller for motor the change of the supply voltage of electric power supply CD-ROM drive motor, this controller for motor is when monitoring is by the load change that Weight detector detected, monitoring is from the change of the supply voltage of voltage check device, detects the sliver of being twisted from the change of this load change and supply voltage and has or not broken end.

The single spindle drive type twisting frame of the 2nd kind of scheme of the present invention is on the 1st kind of scheme basis, it is characterized in that, described controller for motor is when the change that detects supply voltage, interruption is from the monitoring of the load change of Weight detector, make under the occasion that supply voltage restores with interior at the power failure monitoring period, begin through after preset time from the recovery of supply voltage, the monitoring of beginning load change.

The single spindle drive type twisting frame of the 3rd scheme of the present invention is on the 2nd kind of basic scheme basis, it is characterized in that, controller for motor can be set change power failure monitoring period; Above-mentioned power failure monitoring is change, the time after the monitoring of interrupting from the load change of Weight detector, before the driving that stops motor as power failure according to supply voltage.

The single spindle drive type twisting frame of the 4th scheme of the present invention be the 2nd or the 3rd kind of scheme basis on, it is characterized in that controller for motor can be set the change time; The above-mentioned time is that the monitoring to load change began the preceding time after supply voltage restored.

The 5th scheme of the present invention provide a kind of single spindle drive type twisting frame, it is to be provided with CD-ROM drive motor on each spindle device that every sliver is twisted, and it is characterized in that, is provided with: the Weight detector that is used to detect the load of CD-ROM drive motor; The sliver that detects twisting from the load change that Weight detector detected has or not the controller for motor of broken end, and this controller for motor begins the monitoring of load change from the driving of CD-ROM drive motor, through after the given time.

The single spindle drive type twisting frame of the 6th kind of scheme of the present invention is on the basis of any one scheme in 1-5, it is characterized in that, also be provided with the turn-sensitive device of the rotary speed that is used to detect CD-ROM drive motor, controller for motor is according to the detected rotary speed of this turn-sensitive device, the control CD-ROM drive motor makes it rotate according to desired rotary speed.

The processing machine of the single spindle drive type twist yarn of the 7th kind of scheme of the present invention is on any one scheme basis, to it is characterized in that in 1-6, and Weight detector is the current sensor that is used to detect the current value of supplying with CD-ROM drive motor.

The processing machine of the single spindle drive type twist yarn of the 8th kind of scheme of the present invention is on the 7th kind of scheme basis, it is characterized in that, it is the current value that reads in after the twist yarn processing beginning through this moment after preset time, automatically sets the threshold value that is detected the current value reduction by Weight detector from this value and the ratio that sets in advance.

The single spindle drive type twisting frame of the 9th scheme of the present invention is on the basis of any one scheme in 1-6, it is characterized in that, controller for motor is a duty factor of adjusting output, CD-ROM drive motor is carried out PWM control, and Weight detector is recently to detect load according to the load to CD-ROM drive motor output.

The single spindle drive type twisting frame of the 10th scheme of the present invention is on the basis of any one scheme in 1-9, it is characterized in that, motor drive is that the single thread that detects two-stage yarn feeding formula breaks end.

As mentioned above, according to the present invention, thereby can avoid when starting or moment the caused load change of reason and be judged as the phenomenon that broken end stops ingot mistakenly such as when stopping, the judgement of breaking end definitely, that is to say, can be in that looping be unsettled when starting or moment of air ring disorder when stopping, by interrupting the monitoring of broken end, the judgement of more properly breaking end.

Below, the most preferred embodiment that present invention will be described in detail with reference to the accompanying.

Fig. 1 is the schematic diagram of expression one embodiment of the invention.

Fig. 2 is the control flow block diagram of expression controller for motor of the present invention.

Fig. 3 is the control time curve map in the presentation graphs 2.

Fig. 4 is the schematic diagram of expression another embodiment of the present invention.

Two-for-one twister adopts the structure that twisting apparatus 10 is arranged in many ingots as shown in Figure 1, and twisting apparatus 10 is provided with batching apparatus 12 above spindle device 11.

Spindle device 11 has: be used to support yarn feeding package 13 fixed disk 14, be arranged on fixed disk 14 bottoms the rotating disc 15 that yarn feeding is twisted, make rotating disc 15 rotations CD-ROM drive motor 16, be installed in yarn feeding package 13 shaft core position tensioner 17 and be arranged on air ring thread-carrier 18 on the axes extending line of yarn feeding package 13.Batching apparatus 12 has: be used to transport feeding roller 19 from the yarn feeding Y of air ring thread-carrier 18, make cylinder 21 that coiling package 20 rotates, make the traversing gear 22 that the yarn feeding Y to coiling package 20 traverses from feeding roller 19.

The yarn that is supported in the yarn feeding package 13 on the fixed disk 14 of spindle device 11 is in shredding, apply tension force by tensioner 17, axle center by yarn feeding package 13, radially extend out from rotating disc 15 to foreign side, form air ring on one side, Yi Bian twist by the air ring thread-carrier 18 on the axle center once more, through the yarn feeding Y of twisting, traverse by traversing gear 22 from the feeding roller 19 of batching apparatus 12, batch simultaneously on the coiling package 20 that rotates on the cylinder 21.

Except two-for-one twister shown in Figure 1, the present invention also is applicable to ring doubling frame, uptwister or other ring spinning frames.In addition, in the two-for-one twister of Fig. 1,, still, also be applicable to the detection of the single thread broken end of two-stage yarn feeding formula although understand the detection case that breaks end when twisting single thread.

In this two-for-one twister, each CD-ROM drive motor 16 is driven by controller for motor 30.

In Fig. 1, the CD-ROM drive motor 16 of spindle device 11 that is used to drive each spindle is respectively by the control of controller for motor 30 single driving, and controller for motor 30 has converter portion, CPU.

Controller for motor 30 usefulness converters will become the electric current of the variable AC power of output frequency from the current transformation of the dc source of AC/DC transverter 32, and drive above-mentioned CD-ROM drive motor 16 according to desired rotary speed, detect the rotation of this CD-ROM drive motor 16 with turn-sensitive device 33, by changing the operating frequency of converter, the rotation of control CD-ROM drive motor 16 makes the rotation of the rotating disc 15 of spindle device 11 become constant rotation.Above-mentioned AC/DC transverter 32 is connected on the commercial ac power source 25 by voltage check device 31.

The current value of supplying with CD-ROM drive motor 16 is detected by Weight detector 34, and this Weight detector 34 is made up of current sensor, and its detected value inputs to controller for motor 30, detects the load of CD-ROM drive motor 16 thus.

At the ratio (duty factor) of connection (ON) time of the switch element of adjusting converter and cut-out (OFF) time afterwards, when CD-ROM drive motor 16 is carried out PWM, can detect the load of CD-ROM drive motor by above-mentioned duty factor.

By motor drive signal line 35, from voltage check device 31 motor drive signal is inputed to each controller for motor 30, simultaneously, power cut signal is inputed to each controller for motor 30 by failure detection signal line 36.

The load change that detects by Weight detector 34 in controller for motor 30 monitoring, simultaneously with power cut signal during from 36 inputs of failure detection signal line, the detection to load change of interrupt load checkout gear 34, monitor change thus from the supply voltage of voltage check device 31, change judgment power failure or moment by this load change and supply voltage stop, and judge the broken end situation of the yarn of twisting simultaneously.

Below, utilize Fig. 2 that the flow diagram of this controller for motor 30 is described.

When starting the processing 40 of corresponding twisting apparatus (spindle device), beginning twist yarn, in step 1, judge from twist yarn processing beginning whether passed through preset time (t1), if passed through preset time (yes), in step 2, judge whether the detection that has a power failure is carried out.

In step 2, usually, the detection (no) if do not have a power failure, then carry out the load current value of Weight detector 34 outputs and check 41, in step 3, according to the load change of being monitored by this load current value inspection 41, carry out abnormal current whether judgement, if current value ratio threshold value low (yes) then after carrying out alarm 42, representing to break end, stops CD-ROM drive motor 16.

In addition, detect threshold value that current value reduces and then can read in after the twist yarn processing beginning current value, setting automatically from this value and the ratio that sets in advance through preset time in (t1) this moment.

In case in this running, from failure detection signal line 36 input failure detection signal, then in step 2, detection (yes) has a power failure, the current monitoring of interrupt load checkout gear 34 (43), in step 4, by whether removing the signal that has a power failure and detect, judge that whether supply voltage restores, if voltage does not rise (no),, judge whether through given power failure monitoring period (t2) then in step 5, if passed through preset time the still not rising (no) of (t2) voltage, then be judged as power failure, motor drive signal is cut off (OFF), make motor stop (44).

In step 5, there be not (no) through within the given time (t2), if restore (yes) at step 4 voltage, then return the judgement of step 1, carry out above-mentioned normal control, after supply voltage restores, pass through preset time (t1) before, the judgement that can interrupt breaking end is when moment stops, even the generation load change also can prevent to misjudge the false judgment into broken end.

Running after initial start stage or voltage restore is unsettled operating condition, and after the yarn process of twisting can not form the preset time (t1) of normal air ring, the monitoring by broken end can prevent false judgment, thus, can carry out correct broken end and detect.

Fig. 3 shows control flow time plot shown in Figure 2, and Fig. 3 (a) and Fig. 3 (b) show moment respectively when stopping and the time plot of motor drive signal, failure detection signal and load monitoring when having a power failure.

Time graph when the moment shown in Fig. 3 (a) stops is represented, motor drive signal rises beginning from it with regard on (ON) when twist yarn processing beginning, after preset time (t1), carries out the monitoring of the load change of CD-ROM drive motor 16.In this running, if failure detection signal is connected (ON), then load monitoring cuts off (OFF), the interrupt load monitoring, if in preset time (t2), failure detection signal is cut off (OFF), voltage restores, then from the cut-out (OFF) of this failure detection signal, after preset time (t1), make load monitoring connect (ON) once more, the load current when being stopped by moment reduces, can prevent to misjudge false judgment into broken end, simultaneously, after voltage restores, the same during with the beginning of twist yarn processing, through after the given time (t1), carry out load monitoring once more.Like this, can avoid false judgment with more leaning on.In addition, even when moment stops, motor drive signal can continue to connect (ON).

During power failure shown in Fig. 3 (b), as mentioned above, motor drive signal connect (ON), from it rise beginning, through after preset time (t1), carry out the load monitoring (ON) of CD-ROM drive motor 16.In this running, if failure detection signal is connected (ON), then load monitoring cuts off (OFF).If t2 preset time has been passed through in the connection of this failure detection signal (ON),, make motor drive signal cut off (OFF) then because of having a power failure.

Like this, by adjusting the load current of supply voltage, monitoring CD-ROM drive motor 16, can more correctly judge broken end, the false judgment in the time of avoiding moment to stop.

In addition, because time t1, t2 have different reasonable times according to the difference that the conditioned disjunction of the capacity of CD-ROM drive motor 16 or twist yarn batches condition, therefore, can set change this time t1, t2.

In the present embodiment, be the same time (t1) during the forbidding of the load monitoring in twist yarn when beginning processing and during the forbidding of the load monitoring after moment, the voltage when stopping to restore, still, also can set separately, set the time of two asynchronism(-nization)s for.

Fig. 4 shows another embodiment of controller for motor of the present invention.

In the embodiment shown in fig. 1, show the example that drives a CD-ROM drive motor with controller for motor 30, in the present embodiment, with two CD-ROM drive motors of a controller for motor 50 drive controlling 16,16.

At this moment, the CPU that motor rotary speed and load current value is input to controller for motor 50 from the turn-sensitive device 33 and the Weight detector 34 of each CD-ROM drive motor 16, in view of the above, to deliver to each converter 52,52 corresponding to the driving signal 53,53 of the load of this ingot, control CD-

ROM drive motor

16,16 independently.

In this controller for motor 50, as mentioned above, when breaking end, the CD-ROM drive motor 16 of this ingot is stopped by any one ingot generation of two CD-ROM drive motors, 16 drivings, another ingot that does not break end can be driven same as before by CD-ROM drive motor 16.

As mentioned above, according to the present invention, thereby can avoid when starting or moment the caused load change of reason and be judged as the phenomenon that broken end stops ingot mistakenly such as when stopping, the judgement of breaking end definitely, that is to say, can be in that air ring be unsettled when starting or moment of air ring disorder when stopping, by interrupting the monitoring of broken end, the judgement of more properly breaking end.

Claims

1, single spindle drive type twisting frame, it is to be provided with CD-ROM drive motor on each spindle device that every sliver is twisted, and it is characterized in that, is provided with: the Weight detector that is used to detect the load of CD-ROM drive motor; Be used to detect voltage check device and controller for motor the change of the supply voltage of electric power supply CD-ROM drive motor, this controller for motor is when monitoring is by the load change that Weight detector detected, monitoring is from the change of the supply voltage of voltage check device, detects the sliver of being twisted from the change of this load change and supply voltage and has or not broken end.

2, single spindle drive type twisting frame as claimed in claim 1, it is characterized in that, described controller for motor is when the change that detects supply voltage, interruption is from the monitoring of the load change of Weight detector, make under the occasion that supply voltage restores with interior at the power failure monitoring period, begin through after preset time from the recovery of supply voltage, the monitoring of beginning load change.

3, single spindle drive type twisting frame as claimed in claim 2 is characterized in that, controller for motor can be set change power failure monitoring period; Above-mentioned power failure monitoring is change, the time after the monitoring of interrupting from the load change of Weight detector, before the driving that stops motor as power failure according to supply voltage.

4, as claim 2 or 3 described single spindle drive type twisting frames, it is characterized in that controller for motor can be set the change time; The above-mentioned time is that the monitoring to load change began the preceding time after supply voltage restored.

5, single spindle drive type twisting frame, it is to be provided with CD-ROM drive motor on each spindle device that every sliver is twisted, and it is characterized in that, is provided with: the Weight detector that is used to detect the load of CD-ROM drive motor; The sliver that detects twisting from the load change that Weight detector detected has or not the controller for motor of broken end, and this controller for motor begins the monitoring of load change from the driving of CD-ROM drive motor, through after the given time.

6, as any described single spindle drive type twisting frame in the claim 1～5, it is characterized in that, also be provided with the turn-sensitive device of the rotary speed that is used to detect CD-ROM drive motor, controller for motor is according to the detected rotary speed of this turn-sensitive device, the control CD-ROM drive motor makes it rotate according to desired rotary speed.

As any described single spindle drive type twisting frame in the claim 1～6, it is characterized in that 7, Weight detector is the current sensor that is used to detect the current value of supplying with CD-ROM drive motor.

8, single spindle drive type twisting frame as claimed in claim 7, it is characterized in that, it is the current value that reads in after the twist yarn processing beginning through this moment after preset time, automatically sets the threshold value that is detected the current value reduction by Weight detector from this value and the ratio that sets in advance.

9, as any described single spindle drive type twisting frame in the claim 1～6, it is characterized in that, controller for motor is a duty factor of adjusting output, and CD-ROM drive motor is carried out PWM control, and Weight detector is recently to detect load according to the load to CD-ROM drive motor output.

As any described single spindle drive type twisting frame in the claim 1～9, it is characterized in that 10, motor drive is that the single thread that detects two-stage yarn feeding formula breaks end.