JP2003289684A - Quick stopper for body of rotation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To apply a brake to a body of rotation by the regenerative brake even by stopping power supply to a control device from a power source when the (external) power source is cut off at emergency stop time, service interruption time, etc., taken for a long period of time. <P>SOLUTION: This quick stopper 30 for a body of rotation is constituted by providing spindles 9A, 9B (body of rotation), spindle motors 6A, 6B driving the spindles 9A, 9B, a control device 5 controlling driving of the motors 6A, 6B through an inverter 4, and a service interruption detector 25 (detection means) detecting cutoff of power supply from a commercial AC power source 20 and the control device 5, when a power cutoff is detected, commands the spindle motor to decelerate to make the control device 5 supply regenerative power by the spindle motor, up to the time to continuously command the spindle motor to decelerate till a system turns down by insufficiency of the regenerative power. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a quick stop device for a rotating body, and more particularly to a structure for stopping the rotating body by utilizing a regenerative brake.

[0002]

2. Description of the Related Art A high-speed winder for a textile machine is an example of an apparatus equipped with a rotating body that is a heavy object that rotates at high speed. As a power source for such an apparatus, a commercial AC power source which is an external power source is generally used. The control device provided in the winder converts the electric power of the commercial AC power source through the inverter and rotates the spindle at high speed to wind the yarn. The spindle with the rolled-up package is heavy. The high-speed winder uses a regenerative brake to absorb a large amount of rotational energy of a spindle having a wound package into a motor during a normal stop to stop the rotating body.

When the power supply is momentarily stopped, for example, as shown in FIG. 5A, the power supplied from the commercial AC power supply may decrease by about 50%. At this time, the control device commands the spindle motor to decelerate through the inverter as shown in FIG. 5B, but commands the acceleration again when the stop time is within a predetermined time (for example, about 1 sec). To return to the rotation speed at the time of winding. The decelerated spindle motor functions as a generator, and regenerative electric power is generated from the spindle motor, and this electric power is utilized as operation maintaining electric power for the control device and the like. And by utilizing this regenerative power, regardless of the amount of decrease in commercial AC power,
The operation of the control device can be maintained. Such control is
It is known as kinetic buffering at the time of momentary power failure.

Further, in the event of an emergency stop or a power failure for a long time, the commercial AC power supply is disconnected from the winder, so that the power supply to the control device is stopped. Figure 6 (a)
The situation is as shown in. At this time, the deceleration control of the rotating body (spindle provided with the package) is performed as follows. (1) When the power supply is stopped or the power is cut off, the control device automatically goes down, the rotating body is not braked, and freely rotates according to inertia, and then stops. The change in the rotation speed of the rotating body is as shown in FIG. 6 (b). (2) When the power supply is stopped or the power is cut off, the control device operates the mechanical brake to stop the rotating body. Alternatively, the control device automatically goes down and the mechanical brake is activated. The change in the rotation speed of the rotating body is shown in FIG.
It is as shown in (c).

[0005]

In the case of an emergency stop or a power failure for a long time, the method (1) does not positively brake the rotating body. While rotating freely, the rotating body is decelerated by frictional resistance of the shaft portion, air resistance and the like. Therefore, it takes a long time to stop the rotating body. In the method (2), the mechanical brake is used to stop the rotating body, which is a heavy object, while rotating at high speed. Therefore, the mechanical brake requires a very large braking capacity. The maximum rotation speed of the winding shaft of the high-speed winder reaches tens of thousands rpm. It is necessary to design the size of the rotating disc and the strength of the brake main body so as to satisfy this braking capacity, but a rotating disc having a size satisfying the above requirements cannot be designed in terms of strength in view of the winder layout. In addition, since it is not necessary to operate such a mechanical brake at the time of normal stop, the cost is unbalanced. INDUSTRIAL APPLICABILITY The present invention makes it possible to brake the rotating body by regenerative braking even when the power supply from the power supply to the control device is stopped when the (external) power supply is cut off at the time of an emergency stop or a power failure for a long time. To do.

[0006]

The problems to be solved by the present invention are as described above. Next, the means for solving the problems will be described. That is, according to the first aspect of the present invention, the rapid stop of the rotating body includes the rotating body, the motor that drives the rotating body, the control device that controls the motor, and the detection unit that detects the power interruption of the power supply from the power supply In the device, when the power failure is detected, the control device instructs the motor to decelerate and supplies regenerative power from the motor to the control device.

According to a second aspect of the present invention, there is provided a rotating body including a rotating body, a motor for driving the rotating body, a control device for controlling the motor, and a connection / disconnection switch for cutting off power supply from a power source. When the control device detects a disconnection state of the connection / disconnection switch, the control device instructs the motor to decelerate and supplies regenerative power from the motor to the control device.

According to the third aspect of the present invention, the motor is continuously instructed to decelerate until the system goes down due to insufficient regenerative power.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A quick stop device 30/40 which is a second embodiment having both the first and second inventions will now be described. A first invention is a quick stop device for a rotating body during a long power failure. The second invention is
This is a quick stop device for the rotating body at the time of emergency stop. In both inventions, the prerequisites are different, but the point that rapid stop of the rotating body is required is the same. The difference between the two inventions will be briefly described. A first aspect of the invention is a device in which, after a power outage is started, the control device 5 (described later) determines whether or not there is an instantaneous power outage, and then the control device 5 performs a quick stop control of a rotating body. A second aspect of the invention is a device in which the control device 5 immediately performs a quick stop control of the rotating body when the connection / disconnection switch that cuts off the power supply from the power source is in a disconnected state due to some abnormality or the like. The first invention and the second invention are applied to the quick stop devices 30 and 40, respectively.

First, the quick stop device 30 according to the first embodiment.
This will be described with reference to FIG. Quick stop device 30
Is applied to the device configuration from the commercial AC power supply 20 to the winding device 2. FIG. 1 is a block diagram showing the configuration of the quick stop device 30.

The winding device 2 is a device for winding a yarn in a spinning system. The spinning system is configured by arranging a spinning device, a codet roller, and a winding device 2 in series along the yarn feeding direction. The spinning device is a device for spinning a molten polymer into a thread. The codet roller is a device that takes up the spun yarn and applies an oil agent. The winding device 2 is a device that winds a yarn around a spindle while traversing the yarn.

The structure of the winding device 2 will be described with reference to FIG. The winding device 2 includes a pair of spindles 9A.
9B, contact roller 10, and traverse cam 11 are provided. At the base of the spindles 9A and 9B, a turret plate 1 that is rotatably provided on the winding device 2 main body.
Two are provided. By turning the turret plate 12,
By changing the vertical position of the spindles 9A and 9B, it is possible to collect the fully wound package 13 of either one of the spindles 9A and 9B. Of the spindles 9A and 9B, the yarn 12 fed from the spinning device and the codet roller is wound on the spindle located at the upper winding position to form the package 13. The contact roller 10 contacts the package 13 on the spindle in the upper position. Then, the winding speed of the package 13 is detected from the rotation speed of the contact roller 10. Further, by driving the traverse cam 24, the package 13
Is wound with a constant winding width.

As drive means for the spindles 9A and 9B,
Spindle motors 6A and 6B each have a spindle 9A
-It is provided coaxially with 9B. Contact roller 1
A contact roller motor 7 is provided coaxially as a driving means for driving the motor. The contact roller motor 7 is an auxiliary driving means used for running the contact roller 10. A traverse motor 8 is provided coaxially as a drive means for the traverse cam 11.

Each of the motors 6A, 6B, 7 and 8 is provided with encoders 14A, 14B, 15 and 16 as means for detecting the rotation speed. The encoders 14A, 14B, 15 and 16 are connected to the control device 5 via signal lines, and each of the motors 6A, 6B,
Information about the rotation speed of 7 · 8 is transmitted to the control device 5.

A tension sensor 17 for detecting the tension of the yarn 12 is provided, and the tension sensor 17 is composed of a sensor group for detecting the tension of each yarn 12. The tension sensor 17 is also connected to the control device 5 via a signal line, and information regarding the tension of the yarn 12 is transmitted to the control device 5.

The inverter 4 is an integrated inverter and can simultaneously control the power of a plurality of motors (multi-loads). Power can be supplied between the inverter 4 and each of the motors 6A, 6B, 7 and 8 through a power line. The inverter 4 and the control device 5 are connected via a signal line so that signals can be transmitted. Based on the detection signals of the encoders 14A, 14B, 15 and 16 and the tension sensor 17, the control device 5 causes the inverter 4 to drive each of the motors 6A and 6A.
Instruct that the amount of power supply to B.7.8 is appropriate. Here, “appropriate” means, for example, that the control device 5 controls each motor 6 so that the winding speed of the package 13 is constant.
It means controlling the rotation speed of A, 6B, 7 and 8. Note that the control that is "suitable" is not limited to this control, and may be a control that aims at keeping the tension of the yarn 12 constant.

Spindles 9A and 9B, especially the package 1
Spindles 9A and 9B on which 3 is wound are heavy objects.
The spindles 9A and 9B or the spindles 9A and 9B around which the package 13 is wound are rotating bodies driven by spindle motors 6A and 6B. The contact roller 10 is a rotating body driven by the contact roller motor 7, and the traverse cam 11 is a rotating body driven by the traverse motor 8.

In the winding device 2, the spindle 9A
9B or spindle 13A / 9 around which the package 13 is wound
B is a heavy object and rotates at a high speed during driving, and it is not a realistic measure to stop it by only the mechanical brake. Therefore, a quick stop device 30 having a regenerative brake as a main braking means is provided on the device configuration from the commercial AC power supply 20 (not including itself) to the winding device 2.

The winding device 2 uses a commercial AC power source 20 which is an external power source as a power source, and is supplied with power from the commercial AC power source 20 through a power line 21 shown by a solid line.
The electric power is supplied to the inverter 4 and the control device 5 provided in the winding device 2. DC power is supplied to the control device 5 from the power line 21 via a converter or a transformer (not shown). In addition, as described above, the inverter 4
Supplies electric power to the respective motors 6A, 6B, 7 and 8.

A disconnection switch 22 is provided on the power line 21 so that the electrical connection between the commercial AC power source 20 and the winding device 2 can be cut off. Disconnection switch 2
2 is a means for forcibly shutting off the power supply from the commercial AC power supply 20 to the winding device 2 when an abnormality occurs in the winding device 2, mechanically (not electrically). Composed. In the normal state, the connection / disconnection switch 22 is in a connected state, and power can be supplied from the commercial AC power source 20 to the winding device 2.

The take-up device 2 is provided with an emergency stop switch 23 as an input means for inputting a quick stop instruction of a rotating body (a spindle on which a package 13 described later is wound). The emergency stop switch 23 is connected to the control device 5 and the connection / disconnection switch 22 via a signal line so that signals can be transmitted. When the operator operates the emergency stop switch 23, the connection / disconnection switch 22 cuts off the power supply from the commercial AC power supply 20 to the winding device 2. Although only one emergency stop switch 23 is shown in FIG. 1, a plurality of emergency stop switches 23 may be arranged in the winding device 2. In addition, an operator's input operation of the emergency stop switch 23 transmits an instruction to quickly stop the rotating body to the control device 5 via the signal line.

Also, when an abnormality occurs in the winding device 2, the connection / disconnection switch 22 cuts off the power supply from the commercial AC power source 20 to the winding device 2. For example, when the control device 5 goes down the system and the signal transmission to the connection / disconnection switch 22 is interrupted, the connection / disconnection switch 22 is activated to cut off the power supply.

A power failure detector 25 for detecting a power failure is provided on the power line 21 downstream of the connection / disconnection switch 22. When the power supply from the commercial AC power supply 20 is stopped, the power failure detector 25 detects the power failure state. The power outage detector 25 and the control device 5 are connected via a signal line so that signals can be transmitted, and the detection signal of the power outage detector 25 can be transmitted to the control device 5.

The power failure detector 25 includes a timer 25a.
Is provided. The timer 25a sends a signal for warning the end of the guarantee time to the control device 5 when the guarantee time at the momentary power failure elapses.

Particularly, the rotating bodies that need to be stopped by the quick stop device 30 are spindles 9A and 9B including a heavy weight and a package 13 that rotates at high speed. The spindles 9A and 9B including the package 13 have remarkably large rotational energy as compared with the other rotating body traverse cams 11 and the like, and are objects that are conventionally difficult to stop rapidly (objects to be solved by the present invention). . Therefore, in the following, only the spindles 9A and 9B will be treated as rotating bodies.

First, of the components of the quick stop device 30, those parts related to the first invention will be described. The first invention is, as described above, the quick stop device for the rotating body at the time of a long power failure. As a portion related to the first invention, the quick stop device 30 includes spindles 9A and 9B including the package 13 as rotating bodies and motors 6A and 6B that drive these rotating bodies. Further, a control device 5 for controlling the driving of the motors 6A and 6B via the inverter 4 is provided. Further, a power failure detector 25 is provided as a detection means for detecting a power interruption of the power supply from the commercial AC power supply 20.

Of the spindle motors 6A and 6B provided in the winding device 2, the spindle motor that is driven at the upper winding position is the target of deceleration control. The spindle motors 6A and 6B are coaxial with the spindles 9A and 9B, and their vertical positions are changed by the rotation of the turret plate 12. Therefore, in the following, of the two motors 6A and 6B, the motor located on the upper side is treated and the reference numeral of the spindle motor is omitted. Similarly, the reference numeral of the spindle corresponding to the spindle motor is omitted.

The deceleration control of the rotating body in the quick stop device 30 as an embodiment of the first invention (during a long power failure) will be described with reference to FIGS. 2 (a) and 2 (b). FIG. 2 is a diagram showing changes over time in the electric power and the rotational speed of the rotating body (spindle on which the package 13 is wound) during deceleration control by the quick stop device 30. In particular, FIG. 2A is a diagram showing a time change of the electric power supplied from the commercial AC power source 20, and FIG. 2B is a diagram showing a time change of the rotation speed of the rotating body during a long power failure. .

In the first invention (during a long power failure),
The deceleration control of the rotating body is divided into two stages. These are the within-guarantee time control that is performed from the moment of the power failure until the guarantee time at the moment of power failure, and the after-guarantee time control that is performed after the guarantee time has elapsed. Measuring the guaranteed time of momentary power failure,
As described above, the timer 2 provided in the power failure detector 25
5a. When the guarantee time elapses, a signal warning the end of the guarantee time is transmitted from the timer 25a to the control device 5.

When power failure is detected by the power failure detector 25,
First, the in-guaranteed time control, which is the control within the guaranteed time at the momentary power failure, is started. The control device 5 is the power failure detector 2
Based on the detection of the power failure at 5, the spindle motor is commanded to decelerate. The state of the change in the electric power supplied from the commercial AC power source 20 through the connection / disconnection switch 22 is as shown in FIG. When the spindle motor that tries to rotate due to inertia is instructed to decelerate, regenerative power is generated in the spindle motor and the rotational energy corresponding to the regenerative power is lost. At this time, as shown in FIG. 2B, the rotation speed of the spindle motor decreases. At the same time, the control device 5 supplies the generated regenerative power to the control device 5 via the inverter 4 to obtain power for continuing its operation.

For the guaranteed time (for example, about 1 sec) at the momentary power failure, the regenerative power from the spindle motor is used,
While enabling the control device 5 and the inverter 4,
The spindle motor is controlled so as to avoid a decrease in winding speed as much as possible. The winding operation in the winding device 2 can be continued without interruption of the winding operation due to the momentary power failure. In contrast,
After the elapse of the guarantee time after a momentary power failure, it is judged that proper winding is impossible to maintain the quality of the yarn. Therefore, after the lapse of the guarantee time, deceleration control is performed to stop the spindle on which the package 13 is wound. One of the reasons why the rapid stop is required is that the spindle around which the package 13 is wound is stopped at the time of power recovery after a power failure and it is desirable that the restart can be expected immediately.

That is, the controller 5 obtains the minimum regenerative electric power capable of operating the controller 5 and the inverter 4 from the spindle motor within the guaranteed time at the momentary power failure, and the spindle wound around the package 13 is wound. Keep the rotation speed of as high as possible. On the other hand, after the lapse of the guarantee time at the momentary power failure, the control device 5 performs deceleration control so that the spindle around which the package 13 is wound is stopped as soon as possible.

When the guarantee time at the momentary power failure elapses, the guarantee time post-control for rapidly stopping the spindle (rotating body) on which the package 13 is wound is performed. The control device 5 continues to instruct the spindle motor to decelerate when a signal that warns the end of the guarantee time is transmitted from the timer 25a. The deceleration instruction after the guarantee time has passed is the package 13
The purpose is to stop the spindle wound up. Therefore, the deceleration amount instructed to the spindle motor at this time is larger than the deceleration amount within the guarantee time. As shown in FIG. 2B, the slope of deceleration changes before and after the guaranteed time.

With the above configuration, the rotating body (spindle around which the package 13 is wound) can be rapidly stopped even after the elapse of the guarantee time for a momentary power failure such as a long power failure. Therefore, in a device such as a spindle provided in the winding device 2 that needs to keep the rotation speed uniform and needs to stop once after the speed has decreased, a slow deceleration control (control within the guarantee time). And rapid deceleration control (control after the guarantee time) can be selectively used, which is preferable.

Further, the control device 5 continues to instruct the spindle motor to decelerate until the system itself goes down due to insufficient regenerative power. This means that the rotation speed of the spindle has become lower than the minimum rotation speed of the spindle motor capable of supplying the minimum power for operating the control device 5. When the control device 5 is down, the spindle motor cannot function as a generator (regenerative power generation source). Therefore, as shown in FIG. 2B, after the system of the control device 5 goes down, the spindle rotates freely. The spindle in the freely rotating state is decelerated by frictional resistance with the shaft portion, air resistance, and the like, and gently decelerates to stop as compared with the case where the regenerative brake, the mechanical brake, or the like is actively decelerated.

As described above, since the deceleration command to the spindle motor is continued until the control device 5 goes down, it is possible to perform the quick stop control of the rotating body by making maximum use of the regenerative brake.

Next, of the components of the quick stop device 30, the parts relating to the second invention will be described. The second invention is, as described above, the rapid stopping device for the rotating body at the time of emergency stop. As a portion related to the second invention, the quick stop device 30 is a rotating body and is a package 1
3 includes spindles 9A and 9B including 3 and motors 6A and 6B for driving these rotating bodies.
Further, a control device 5 for controlling the driving of the motors 6A and 6B via the inverter 4 is provided. Further, a connection / disconnection switch 22 capable of cutting off the power supply from the commercial AC power supply 20.
Is equipped with.

The deceleration control of the rotating body in the quick stop device 30 as an embodiment of the second invention (during an emergency stop) will be described with reference to FIG. 2 (c). FIG. 2C is a diagram showing a temporal change in the rotation speed of the rotating body at the time of emergency stop.

In the second invention (during an emergency stop), unlike the first invention (during a long power failure), the deceleration control of the rotating body is in one stage. In the second aspect of the invention, the object is to perform a rapid stop of the rotating body at the time of an abnormality, and the deceleration control is started immediately after the occurrence of the power interruption. Control device 5
The connection / disconnection switch 22 is connected via a signal line, and the control device 5 can detect the difference between the connection state and the disconnection state of electric power in the connection / disconnection switch 22.

When the control device 5 detects the disconnection state of the connection / disconnection switch 22, it instructs the spindle motor to decelerate. The state of the change in the electric power supplied from the commercial AC power source 20 through the connection / disconnection switch 22 is as shown in FIG. When the spindle motor that tries to rotate due to inertia is instructed to decelerate, regenerative power is generated in the spindle motor and the rotational energy corresponding to the regenerative power is lost. At this time, as shown in FIG. 2C, the rotation speed of the spindle motor decreases. At the same time, the controller 5
The generated regenerative electric power is supplied to the control device 5 via the inverter 4 to obtain electric power for continuing its operation.

In an emergency stop, it is desirable to stop the spindle around which the package 13 is wound up as quickly as possible. The emergency stop switch 23, which is an emergency stop instruction input means, is operated and an emergency stop is instructed when some abnormality occurs in the winding device 2. To stop the continuous driving of the winding device 2 in the abnormal state as soon as possible, it is necessary to quickly stop the rotating body.

During an emergency stop, deceleration control is performed so that the spindle wound around the package 13 is stopped as soon as possible. The inclination of deceleration at the time of emergency stop shown in FIG. 2C is similar to the inclination of deceleration after the elapse of the guarantee time at the momentary power failure shown in FIG. It is bigger than the inclination.

With the above configuration, when an abnormality occurs in a device (winding device 30) to which the quick stop device 30 is applied, such as during an emergency stop, the rotating body is rapidly stopped, so that an abnormal condition occurs. It is possible to interrupt the continuous rotation of the rotating body.

Next, the quick stop device 40 of the second embodiment will be described with reference to FIG. FIG. 3 shows a quick stop device 40.
3 is a block diagram showing the configuration of FIG. The quick stop device 40 of the second embodiment, as a braking means of the rotating body (spindle),
A mechanical brake 18 (described later) is provided in addition to the regenerative brake. The difference between the quick stop device 40 and the quick stop device 30 of the first embodiment is that the mechanical brake 1
8 is provided. Hereinafter, the same reference numerals will be used for the same parts as those of the quick stop device 30 of the first embodiment, and the description of those parts will be omitted.

Unlike the quick stop device 30, the winding device 42 to which the quick stop device 40 is applied is provided with mechanical brakes 18 and 18 on one side of the spindles 9A and 9B, respectively, as shown in FIG. Has been. Mechanical brake 1
The reference numeral 8 includes a rotary disc 18a and a brake device 18b for pressing the rotary disc 18a toward the spindle. Further, at one end of the spindles 9A and 9B on the shaft, the rotating discs 18a are brought into contact with the discs 9a and 9a.
a are provided respectively. The brake device 18b is provided with a pressing mechanism that constantly presses the rotating disk 18a toward the braking side by an urging member and a stopping mechanism that stops the pressing. For example, when the signal transmission from the control device 45 described later is interrupted, the stop by the stop mechanism is released and the pressing mechanism is driven, the rotary disk 18a is pressed against the disk 9a of the spindle, and the spindle is braked.

The control device 45 of the winding device 42 has a configuration that enables control of the mechanical brakes 18 in addition to the function of the control device 5 and the connection configuration of signal lines and power lines to the control device 5. It is provided. Mechanical brake 18 ・ 18
The control device 45 and the control device 45 are connected via a signal line so that signals can be transmitted, and the control device 45 can operate the mechanical brake 18.

The rapid stop device 40, like the rapid stop device 30, is an embodiment of both the first invention (during a long power failure) and the second invention (during an emergency stop). First, of the components of the quick stop device 40, a portion related to the first invention (during a long power failure) will be described. As a portion related to the first invention, the quick stop device 40 includes, as a rotating body, spindles 9A and 9B including the package 13, and spindle motors 6A and 6B that drive the rotating body. Further, a control device 45 for controlling the drive of the spindle motors 6A and 6B via the inverter 4 is provided. Further, a power failure detector 25 is provided as a detection means for detecting a power interruption of the power supply from the commercial AC power supply 20.

The deceleration control of the rotating body in the quick stop device 40 having the above structure will be described with reference to FIGS. 4 (a) and 4 (b). In deceleration control by the quick stop device 40,
It is a figure which shows the time change of the electric power and the rotation speed of a rotating body (spindle which wound up the package 13). In particular, FIG. 4A is a diagram showing a time change of the electric power supplied from the commercial AC power source 20, and FIG. 4B is a diagram showing a time change of the rotation speed of the rotating body during a long power failure. .

The deceleration control of the rotating body in the quick stop device 40 as an embodiment of the first invention (during a long power failure) will be described. The deceleration control of the rotating body is divided into three stages. As described above, in the first invention (during a long power failure), the deceleration control of the rotating body is divided into two stages. This two-stage deceleration control utilizes the regenerative brake of the spindle motor. In addition to this, the deceleration control of the rotating body is provided with a deceleration control by the mechanical brake 18 as a third step.

When power failure is detected by the power failure detector 25,
First, as the first step, the in-guaranteed time control which is the control within the guaranteed time at the momentary power failure is started. Controller 4
Reference numeral 5 instructs the spindle motor to decelerate based on the detection of power failure by the power failure detector 25. The state of change in the electric power supplied from the commercial AC power source 20 through the connection / disconnection switch 22 is as shown in FIG. When the spindle motor that tries to rotate due to inertia is instructed to decelerate, regenerative power is generated in the spindle motor and the rotational energy corresponding to the regenerative power is lost. At this time, as shown in FIG. 4B, the rotation speed of the spindle motor decreases. At the same time, the control device 45 supplies the generated regenerative electric power to the control device 45 via the inverter 4 to obtain electric power for continuing its operation.

When the guarantee time at the momentary power failure elapses, as a second step, the guarantee time after-control for rapidly stopping the spindle (rotating body) on which the package 13 is wound is performed. The control device 45 continues to instruct the spindle motor to decelerate when a signal for warning the end of the guarantee time is transmitted from the timer 25a. The deceleration instruction after the lapse of the guarantee time is intended to stop the spindle on which the package 13 is wound. Therefore, the deceleration amount instructed to the spindle motor at this time is larger than the deceleration amount within the guarantee time. As shown in FIG. 2B, the slope of deceleration changes before and after the guaranteed time.

Further, the control device 45 continuously commands the spindle motor to decelerate until the regenerative power is insufficient and the system itself goes down. This means that the rotation speed of the spindle has become lower than the minimum rotation speed of the spindle motor capable of supplying the minimum power for operating the control device 45.

When the control device 45 is down, the spindle motor cannot function as a generator (regenerative electric power generation source). Here, as the third stage deceleration control, the mechanical brakes 18 are configured to operate when the control device 45 system downs.

As an example of this operating configuration, as described above, when the control device 45 system downs and the signal transmission to the mechanical brakes 18 is interrupted, the mechanical brake 1
8.18 is operated to brake the spindles 9A and 9B. Alternatively, if the drive source of the braking mechanism provided in the brake device 18b is the inverter 4 and the power supply from the inverter 4 is interrupted or the supplied power drops below a certain level, the braking mechanism stops and the pressing mechanism is The mechanical brake 18 may be activated so that the mechanical brake 18 is activated. The power supply from the inverter 4 is
Electric power or regenerative electric power from the commercial AC power supply 20 is supplied via the inverter 4. In other words, it means that the mechanical brake 18 is activated when the commercial AC power supply 20 is shut off, drops below a certain level, or the regenerative power from the spindle motor falls below a certain level.

The state of deceleration of the spindle by the mechanical brake 18 after the system down of the control device 45 is as shown in FIG. 4 (b). Comparing the braking effect of the mechanical brake 18 to the braking effect of the regenerative brake is extremely difficult in terms of strength design and cost of the rotating disk. In this embodiment, the braking efficiency of the mechanical brake 18 is about three times the braking efficiency of the regenerative brake.

As described above, in the quick stop device 40 as the embodiment of the first aspect of the invention, after the regenerative brake is operated, the mechanical brake 18 is operated to decelerate the rotating body. Therefore, the rotating body (spindle) is braked by the regenerative brake or the mechanical brake 18, so that the rotating body can be stopped more rapidly than in the case of free rotation. Moreover, since the mechanical brake 18 decelerates in advance after the deceleration by the regenerative brake, the load on the mechanical brake 18 is reduced, the durability of the mechanical brake 18 is improved, and the cost increase is prevented.

In the above, the mechanical brake 18 is operated after the system of the control device 45 is down, but the invention is not limited to this structure. For example, the mechanical brake 18 may be used immediately together with the regenerative brake to brake the rotating body at the stage of shifting to the control after the guarantee time. By doing so, the rotating body is stopped more rapidly than when the rotating body is stopped only by regenerative braking.

Next, of the components of the quick stop device 40, the part relating to the second invention will be described. The second invention is, as described above, the rapid stopping device for the rotating body at the time of emergency stop. As a part related to the second invention, the quick stop device 40 is a rotating body and is a package 1
3 includes spindles 9A and 9B including 3 and motors 6A and 6B for driving these rotating bodies.
Further, a control device 45 for controlling the driving of the motors 6A and 6B via the inverter 4 is provided. Further, a connection / disconnection switch 2 capable of cutting off the power supply from the commercial AC power supply 20.
Equipped with 2.

The deceleration control of the rotating body in the quick stop device 40 as an embodiment of the second invention (during an instantaneous power failure) will be described with reference to FIG. 4 (c). FIG.4 (c) is a figure which shows the time change of the rotation speed of a rotary body at the time of an emergency stop.

The rapid stop device 40 as an embodiment of the second invention is provided with two stages of deceleration control of the rotating body.
As described above, in the second invention (during an instantaneous power failure), the deceleration control of the rotating body is provided in one step, and the regenerative brake of the spindle motor is used. In addition to this, the deceleration control of the rotating body is provided with deceleration control by the mechanical brake 18 as a second step.

As a first step, the control device 45, when detecting the disconnection state of the connection / disconnection switch 22, instructs the spindle motor to decelerate. Connection / disconnection switch 22 from commercial AC power supply 20
The state of the change in the electric power supplied through is as shown in FIG. When the spindle motor that tries to rotate due to inertia is instructed to decelerate, regenerative power is generated in the spindle motor and the rotational energy corresponding to the regenerative power is lost. At this time, as shown in FIG. 4C, the rotation speed of the spindle motor decreases. At the same time, the control device 45 supplies the generated regenerative electric power to the control device 45 via the inverter 4 to obtain electric power for continuing its operation.

At the time of an emergency stop, deceleration control is performed so that the spindle around which the package 13 is wound is stopped as soon as possible. The inclination of deceleration at the time of emergency stop shown in FIG. 4C is similar to the inclination of deceleration after the lapse of the guarantee time at the momentary power failure shown in FIG. 4B. It is bigger than the inclination.

When the control device 45 is down, the spindle motor cannot function as a generator (regenerative electric power generation source). Here, as the third stage deceleration control, the mechanical brakes 18 are configured to operate when the control device 45 system downs.
Further, the configuration is not limited to the configuration in which the mechanical brake 18 is activated after the system of the control device 45 is down.

[0064]

According to the first aspect of the present invention, a rotating body is provided with a rotating body, a motor for driving the rotating body, a control device for controlling the motor, and a detecting means for detecting a power failure of the power supply from the power source. This is a quick stop device for the body, and when a power failure is detected, the controller commands the motor to decelerate and supplies regenerative power from the motor to the controller. The rotating body can be rapidly stopped even after the elapse of the guarantee time. For this reason, a slow deceleration control and a rapid deceleration control are selectively used in a device such as a spindle provided in a winding device that needs to keep the rotation speed uniform and needs to stop once after the speed decreases. It is possible and preferable.

According to a second aspect of the present invention, a rotating body is provided with a rotating body, a motor for driving the rotating body, a control device for controlling the motor, and a connection / disconnection switch for cutting off power supply from a power source. When the control device detects the disconnection state of the connection / disconnection switch, it instructs the motor to decelerate and supplies regenerative power from the motor to the control device. In the device to which the stop device applies,
By stopping the rotating body rapidly when an abnormality occurs,
It is possible to interrupt the continuous rotation of the rotating body in the abnormal state.

As described in claim 3, since the motor is continuously instructed to decelerate until regenerative power is insufficient and the system goes down, the regenerative brake can be used to the maximum extent to control the deceleration of the rotor. It is possible. In particular, when a mechanical brake is also used as a braking means for the rotating body, the durability of the mechanical brake can be improved while the rotating body can be stopped more rapidly.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a quick stop device 30.

FIG. 2 is a diagram showing changes over time in electric power and a rotation speed of a rotating body (a spindle around which a package 13 is wound) during deceleration control by the quick stop device 30.

FIG. 3 is a block diagram showing a configuration of a quick stop device 40.

FIG. 4 is a diagram showing changes over time in electric power and a rotation speed of a rotating body (a spindle around which the package 13 is wound) in deceleration control by the quick stop device 40.

[Fig. 5] Electric power and rotating body (spindle) at the time of momentary power failure
It is a figure showing the time change of the rotation speed of.

FIG. 6 is a diagram showing a change over time in electric power and a rotation speed of a rotating body (spindle) at the time of an emergency stop in a conventional winder or a power failure for a long time.

[Explanation of symbols]

2 Winding device 4 inverter 5 Control device (first embodiment) 6A / 6B spindle motor 9A ・ 9B spindle 18 Mechanical brake 20 Commercial AC power supply 22 disconnection switch 25 Power failure detector (power failure detection means) 30 Rapid Stop Device of First Embodiment 40 Rapid Stop Device of Second Embodiment 42 Winding device 45 Control device (second embodiment)

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[Procedure amendment]

[Submission date] February 20, 2003 (2003.2.2)
0)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

3. A mechanical brake is provided,
The canical brake is made at a specified time after the above guarantee time has elapsed.
The rotating body according to claim 2, wherein the rotating body moves rapidly.
Quick stop device.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

[0006]

The problems to be solved by the present invention are as described above. Next, the means for solving the problems will be described. That is, the invention of claim 1, comprising a rotating body, a motor for driving the rotating body, and a control unit for controlling the motor, and a power-off detection means for detecting a power interruption of power supply from the power source a quick stop device of the rotating body, the control device, when the power disconnection is detected by the power-off detection means, instructs the deceleration to the motor, the regenerative electric power by the motor that is supplied to the control device Is. The invention of claim 2 provides the control device according to claim 1,
Is the deceleration control of the motor,
Instantaneous power failure guarantee time elapses after detecting a power failure at the stage
Control within the guarantee time until the
It is configured to control after the failure time,
Deceleration of the motor per unit time in post-lapse control
The amount is the unit time of the motor in the control within the guaranteed time
It is set to be larger than the deceleration amount per hit.
It The invention of claim 3 provides the mechanical structure according to claim 2,
A brake is provided, and this mechanical brake is
It operates at a predetermined time after the failure time elapses.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

[0007] The invention of claim 4, comprising a rotating body, a motor for driving the rotating body, and a control unit for controlling the motor, and a disengaging switch which allows interrupting the power supply from the power source a quick stop device of the rotating body, wherein the control device detects the disconnection state of the disengaging switch, the motor <br/> instructs decelerating motor, the system of regenerative power by the motor <br /> It is supplied to the control device. The invention of claim 5 is a contract
In requirement 4, a mechanical brake is installed.
The mechanical brake detects the disconnection state of the connection / disconnection switch
After that, it operates at a predetermined time.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

The invention of claim 6 is from claim 1 to claim 5.
In any of the control device regenerative power is insufficient
Until the system goes down, the controller continues to instruct the motor to decelerate. Claim 7
As for the light, in claim 3 or claim 5, the regenerative power is not
Add the control until the controller goes down.
So that the control device continuously commands the motor to decelerate.
The mechanical brake is activated when the
It is set after the system of the control device is down.
It The invention of claim 8 resides in claims 1 to 7.
The rotating body winds the yarn in the winding device.
Is a spindle for forming a package
is there.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0064

[Correction method] Change

[Correction content]

[0064]

Effect of the Invention of Claim 1 invention, a rotating body, a motor for driving the rotating body, and a control unit for controlling the motor, and the power-off detection means for detecting a power interruption of power supply from the power source a quick stop device for a rotary body wherein the system <br/> control apparatus, when the power disconnection is detected by the power-off detection means, instructs the deceleration to the motor, the regenerative electric power by the motor the so to supply to the control device, such as during extended outages, even after guaranteed time instant power failure, can cause rapid stop rotating body. The invention of claim 2 is
The control device uses the electric power as the deceleration control of the motor.
Instantaneous power failure guarantee time after power failure is detected by the power failure detection means
Control is performed within the warranty time until the time elapses, and the warranty time elapses.
It is configured to perform control after the lapse of the guarantee time after
The unit time of the motor in control after the guarantee time has passed
The deceleration amount of the
It is set to be larger than the deceleration amount per unit time.
Therefore, the rotational speed of the rotating body is almost constant during an instantaneous power failure.
The rotating body can be stopped rapidly during a long power failure.
It can be stopped and applied to the spindle of the winding device, etc.
It is suitable when The invention of claim 3 is mechanical
A brake is provided, and this mechanical brake is
Since it operates at a specified time after the outage time elapses,
It is possible to stop the rotating body even more rapidly during a power outage.
it can.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0065

[Correction method] Change

[Correction content]

[0065] The invention of claim 4, comprising a rotating body, a motor for driving the rotating body, and a control unit for controlling the motor, and a disengaging switch which allows interrupting the power supply from the power source a quick stop device of the rotating body, wherein the control device detects the disconnection state of the disengaging switch, the motor <br/> instructs decelerating motor, the system of regenerative power by the motor <br /> It is supplied to the control device . For this reason, when an abnormality occurs in a device to which the quick stop device is applied, such as during an emergency stop, by rapidly stopping the rotating body, it is possible to stop the rotating body from continuing to rotate in an abnormal state. Can be made. According to the invention of claim 5, a mechanical brake is provided.
This mechanical brake disconnects the connection / disconnection switch.
It operates at a predetermined time after the condition is detected.
Therefore, in the event of an emergency stop, the rotating body should be stopped more rapidly.
You can

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0066

[Correction method] Change

[Correction content]

[0066] The invention of claim 6, before the regenerative power is insufficient
Serial control apparatus until the system down, the control device
Since the motor is continuously instructed to decelerate, it is possible to make maximum use of the regenerative brake to control the deceleration of the rotating body. In the invention of claim 7, the regenerative power is insufficient and the
Until the control system goes down,
It is configured to continuously command deceleration to the motor,
The operation timing of the mechanical brake depends on the system
It is set after stem down. others
Therefore, it is possible to improve the durability of the mechanical brake.
In addition to being able to reduce the size of the mechanical brake
it can. In particular, the invention as defined in claim 8 is
Spindle for winding thread and forming a package
It is suitable to apply to a winding device equipped with.

Claims (3)

[Claims] 1. A rotating body and a motor for driving the rotating body,
A quick stop device for a rotating body, comprising a control device for controlling a motor and a detection means for detecting a power cut of power supply from a power supply, wherein the control device decelerates the motor when the power cut is detected. Is issued and the regenerative electric power from the motor is supplied to the control device. 2. A rotating body and a motor for driving the rotating body,
A quick stop device for a rotating body, comprising a control device for controlling a motor and a connection / disconnection switching device capable of cutting off power supply from a power supply, wherein the control device detects a disconnection state of the connection / disconnection switching device. A quick stop device for a rotating body, characterized in that the motor is instructed to decelerate and regenerative electric power from the motor is supplied to a control device. 3. The rotating body according to claim 1, wherein the controller continues to instruct the motor to decelerate until the system goes down due to insufficient regenerative power. Quick stop device.