JP2539937Y2 - Drive - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving device for selectively driving a plurality of motors in a take-up winder or the like.

[0002]

2. Description of the Related Art As shown in FIG. 3, a take-up winder 1 winds up a polyester filament or a nylon filament, and has two bobbin holders having spindle motors 2 and 3, respectively. 4, 5 and a touch roller 7 provided with a pulse generator 6, and a control box 8 for controlling the operation thereof is provided. The control box 8 is provided with a controller 9 to which a signal from the pulse generator 6 is input.
When the touch roller 7 comes into contact with the yarn layer (package) 10 wound on the upper bobbin holder 4, the peripheral speed is detected, and the inverters 11 and 12 are controlled to keep the peripheral speed constant. The spindle motors 2 and 3 are feedback-controlled via the motor.

As shown in FIG. 4, the two bobbin holders 4 and 5 are partially rotated and alternately driven to rotate.
When a predetermined time (t ₁ ) elapses from the time when winding reaches the steady rotation speed M and starts winding, the other bobbin holder 5 starts rotating and one bobbin holder 4 becomes full. The rotation speed reaches the steady rotation speed M by (t ₂ ). Thereafter, the upper and lower positions of the bobbin holders 4 and 5 are alternated and the yarn is transferred (t ₃ ), and the filament winding is subsequently performed.

[0004]

In the above-mentioned conventional drive device, separate spindle motors 2 and 3 and inverters 11 and 12 are required to drive the respective bobbin holders 4 and 5, respectively. In order to reduce the number of components in the control box 8, it has been an issue to share constituent components.

[0005] In view of the above circumstances, the present invention has been devised to provide a drive device capable of reducing the number of parts and reducing the cost.

[0006]

According to the present invention, a plurality of spins are provided.
In the driving device for the dollar Driving alternately winding the yarn continuously it to each motor for driving the spindle
The inverters are provided, and the DC parts of these inverters are connected to each other to provide a common brake circuit resistance.

[0007]

According to the above configuration, when the motor is stopped by reducing the rotation speed by the inverter , the resistors are alternately used by the connected inverters.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of a driving device according to the present invention, and shows a case where the present invention is applied to a take-up winder. This drive comprises two spindle motors 2, driven partially overlapping,
3 are respectively provided with inverters 21 and 22 with converters, and their DC parts 23 and 24 are connected to each other.
6 are provided.

The inverters 21 and 22 with converters are provided with converters 27 and 28 for converting AC power into DC, a resistor 30 and a capacitor 31 forming a smoothing circuit 29, a fuse 32, and the like. ), The power supply frequency is changed by an electric signal input to the inverter units 33 and 34 to increase or decrease the rotation speed of the spindle motors 2 and 3.

Then, the plus (p) of the DC parts 23 and 24
And the minus (n) are connected by connection lines 35 and 36, and the plus side of a transistor 37 for operating the brake circuit 25 is connected to a third connection line 38.
Are connected by Further, the resistor 26 and the thermal 39 are provided so as to be bridged between the plus side connection line 35 and the third connection line 38, and the diode 40 is provided in the third connection line 38, respectively. The resistor 26 has such a magnitude that the reverse induced voltage (energy) generated when the rotation of the spindle motors 2 and 3 is reduced can be quickly consumed by heat generation.

Next, the operation of this embodiment will be described.

When the bobbin holders 4 and 5 are rotated by the spindle motors 2 and 3 to take up the filament, one of the spindle motors 2 is started up to a steady rotation speed, and then wound by the bobbin holder 4. Start taking. The controller detects the peripheral speed of the yarn layer using the touch roller and the pulse generator, and gradually reduces the motor rotation speed and performs feedback control so that the winding speed is constant. When a predetermined time has elapsed, the other spindle motor 3 is started, and when one bobbin holder 4 is full, the upper and lower positions are switched to transfer the yarn to the other bobbin holder 5 having a steady rotation speed. (See FIG. 3).

When the bobbin holder 4 is full, the rotation of the motor is immediately reduced after the thread transfer. However, when the command of the controller decreases toward the frequency of 0 Hz, the back induced voltage is applied to the DC portion 23 of the inverter. Flows. When this voltage rises, the transistor 37 is turned on to guide the counter-induced voltage to the resistor 26 (solid arrow a in the figure), and the heat is consumed by heat generation, thereby substantially braking the rotation. When the frequency of the command from the controller becomes 0 Hz, the rotation is completely stopped by the auxiliary mechanical brake to doff.

When the winding by the other bobbin holder 5 proceeds and becomes full, the yarn is transferred to one of the empty bobbin holders 4 and then the reverse induced voltage due to the rotation deceleration is led to the resistor 26. (Broken arrow b in the figure), the braking of the rotation is performed in the same manner. Thereafter, winding is continuously performed by alternately repeating the rotation drive.

As described above, the spindle motors 2 and 3 are
In mutually driven machines (take-up winders)
Focuses on the fact that the resistances of the brake circuits are not used at the same time, and connects the DC parts 23 and 24 of the inverters 21 and 22 with converters provided in each of the spindle motors 2 and 3 to reduce the back induced voltage consumption. Since the resistors 26 are provided so as to be shared, only one resistor, which is conventionally provided for each of the spindle motors 2 and 3 in total, is reduced to one, and the number of parts and cost can be reduced. Also shown in FIG.
The spindle motors 2 and 3 overlap
In the case of alternating operation, the DC
Occurs on the braking side because the parts 23 and 24 are connected
Use the back-induced voltage as the initial rotational energy on the drive side.
Wear.

In this embodiment, a take-up winder is shown as a machine to which the present invention is applied. However, the present invention is not limited to this and can be widely applied to a drive device having a similar function.

[0018]

[Effects of the Invention] In summary, according to the present invention, the following excellent effects are exhibited.

An inverter is provided in the motor for alternately operating the plurality of spindles , and the DC parts thereof are connected to each other to provide the resistance of the brake circuit, so that the resistance can be shared. Reduction of points and cost can be achieved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of a driving device according to the present invention.

FIG. 2 is a configuration diagram of a take-up winder including a conventional driving device.

FIG. 3 is a time change diagram of the number of revolutions for explaining the operation of FIG. 2;

[Explanation of symbols]

 2,3 Motor (spindle motor) 21,22 Inverter with converter (inverter) 23,24 DC part 25 Brake circuit 26 Resistance

Claims (1)

(57) [Scope of request for utility model registration] 1. A yarn is driven by alternately operating a plurality of spindles.
In the drive device for continuous winding , the spin
Provided with an inverter to each motor for driving the dollar, by connecting the DC part between the inverters
A drive device comprising a common brake circuit resistor.