JPH10182001A - Yarn manufacturing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To extremely shorten a distance between a motor and an inverter by a method wherein a common converter part to feed a DC power to a plurality of inverter parts is arranged at the external part of a motor and an inverter part to invert a DC current from the converter part into a necessary frequency is mounted on the motor. SOLUTION: When an AC power is fed from an external source, the AC power only in an amount needed by a yarn manufacturing line is converted into a direct current by a common converter 54 and transmitted to the yarn manufacturing equipment machine bed side through a single cable 57 for feeding a power and distributed to the motors 12, 13, 20, 21, 29, 30, and 31 for a spinning device 1, a first roller device 2, a second roller device 3, and a winding device 4. The DC is converted into an alternating current by inverters 9, 15, 17, 23, 25, 33, 35 and 37 mounted on the motors 12, 13, 20, 21, 29, 30, and 31 and the motors 12, 13, 20, 21, 29, 30, and 31 are rotated at the preset number of revolutions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a facility for producing yarn such as synthetic fibers.

[0002]

2. Description of the Related Art In a facility for producing synthetic fiber yarn, for example, a take-up roller, a drawing roller and a bobbin for winding a yarn in a winding device as described in JP-B-63-5485. Many rotating means are used in a mounting spindle or the like.

In these rotary systems, a motor is independently installed, and at the same time, an inverter device is installed so as to be attached to the motor, and the motor is started / stopped and shifted based on a command from a central controller. It is configured to be.

Recently, as described in Japanese Patent Application Laid-Open No. 7-101629, a technique has been seen in which the converter section of the inverter device is shared in the direction of the yarn flow. .

Further, when power is transmitted and received in the 400 V system, if the wiring distance from the inverter device is long, the voltage between the terminals of the motor has a high peak value,
Since the dielectric strength of the motor may be exceeded by exceeding the withstand voltage of the motor, a surge absorber (LCR circuit) is generally installed on the output side of the inverter device as a measure against surge voltage.

[0006]

In each of the above-mentioned technologies, an inverter is provided outside the motor, and electric power of a frequency controlled by the inverter is taken into the motor.

[0007] In such a system, an electric control panel requiring a large space in which a large number of drive power sources are integrated must be installed outside the yarn manufacturing equipment.

[0008] Therefore, a compact factory layout cannot be performed, and a large factory space needs to be taken.
There have been problems that the number of required personnel increases and the flow of products deteriorates.

An inverter corresponding to each motor described in Japanese Patent Publication No. 63-5485 is installed in an electric panel room far from the yarn manufacturing equipment, and each motor is rotated at a predetermined speed. Since the controller for controlling the speed is also installed in a normal air environment that does not contain an atmosphere such as oil outside the machine, a large number of cables are wired between the yarn manufacturing equipment and the controller. Have been.

A number of long signal transmission cables and motive power cables are provided at the factory so that the rotation speed information of the motor is detected by a pulse generator and a pulse pickup and transmitted to a controller so that the rotation speed can be controlled to a preset rotation speed. In this case, there is a problem that noise is put on the signal transmission cable and a trouble easily occurs.

When an electric panel is installed with a large space provided near the drive unit in order to avoid such troubles, the electric panel is used during the production of fibers in the cooling air used for cooling the electric panel. The oil to be sprayed is mixed in in a spray state, and the insulation is broken while the cooling air is sprayed on the electric panel, which may cause another trouble such as a short circuit or a short circuit.

Therefore, there is a problem that means for preventing this new trouble must be provided.

Further, when power is transmitted and received in a 400 V system, there is a problem that a surge absorber (LCR circuit) must be installed.

According to the present invention, the installation space for the inverter device can be reduced, the number of cables can be reduced, the wiring length can be reduced, the amount of heat generation can be reduced, and the leakage trouble can be reduced. It is an object of the present invention to provide a yarn manufacturing facility that does not require a surge absorber (LCR circuit) even when transmission and reception of yarns are performed.

[0015]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a yarn manufacturing facility according to the present invention has a common structure for supplying DC power to at least two or more inverter units. The converter is installed outside the motor, and an inverter for converting DC power from the converter to a required frequency is mounted on the motor.

Further, a pulse generator and a pickup for detecting the number of rotations of the motor as described in claim 2 are mounted on the motor, and information on the number of rotations of the motor from the pickup and a higher-order controller installed outside the motor are provided. The motor frequency is controlled to a preset speed by changing the inverter frequency by matching the speed command signal of the motor and the lower controller that controls the start and stop operation of the motor is mounted on the motor. be able to.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of a yarn manufacturing facility according to the present invention will be described based on the drawings.

FIG. 1 is a block diagram showing one embodiment of a drive system of a yarn manufacturing facility of the present invention. The yarn manufacturing facility of the present invention comprises a spinning device 1, a first roller device 2, and a second roller. It comprises a device 3 and a winding device 4.

The spinning apparatus 1 includes a gear pump 6 for feeding a polymer to a die 5 and a motor 7 for rotating the gear pump 6.
And a lower controller 8 and an inverter 9.

The above-mentioned first roller device 2 is a body roller 1
0, a separate roller 11, a motor 12 for rotating the body roller 10, a motor 13 for rotating the separate roller 11, lower controllers 14, 16 provided for the respective motors 12, 13, and inverters 15, 17. I have.

The second roller device 3 is a godet roller 1.
8, a separate roller 19, a motor 20 for rotating the body roller 18, a motor 21 for rotating the separate roller 19, lower controllers 22 and 24 provided for the respective motors 20 and 21, and inverters 23 and 25. .

The above-described winding device 4 includes a traverse mechanism 26 for yarn traverse and a spindle 27 for bobbin mounting rotatably mounted on a revolving member (not shown).
A motor 29 for rotating the traverse mechanism 26 and a motor 30 for rotating the spindles 27 and 28,
31, lower controllers 32, 34, 36 provided corresponding to the respective motors 29, 30, 31 and an inverter 33,
35 and 37.

The motor 7 has a lower controller 8 and an inverter 9 mounted on the motor 7, and a pulse generator 38 for detecting the number of revolutions at the shaft end (opposite output shaft side) of the motor 7. A pulse pickup 39 is provided.

The lower controller 8 instructs DC power sent from a common converter 54 for converting AC power to DC power by matching a rotation speed command signal from the upper controller 55 with rotation information from the pulse pickup 39. And has a function of converting the AC power into a predetermined predetermined frequency.

The aforementioned motors 12, 13, 20, 21, 2
Similarly to the motor 7, lower controllers 14, 16, 22, 24, 32, 34, 36 and inverters 15, 17, 23, 25, 33, 35, 37 are provided in 9, 30, 31 respectively.
And pulse generators 40, 42, 44, 46, 4 for detecting the number of rotations of each motor.
8, 50, 52 and pulse pickups 41, 43, 4
5, 47, 49, 51, and 53 are provided at predetermined positions.

The above inverters 9, 15, 17, 23,
25, 33, 35, 37 and the lower controllers 8, 14,
16, 22, 24, 32, 34, and 36 may be provided with heat-dissipating fins to prevent temperature rise,
Preferably, cooling is performed by a fan 7b or the like installed at the shaft end of 2, 13, 20, 21, 29, 30, 31.

The inverters 9, 15, 17, 23, 2
5, 33, 35, 37 and lower controllers 8, 14, 1
6, 22, 24, 32, 34, 36, pulse generators 38, 40, 42, 44, 46, 48, 50, 52 and pulse pickups 39, 41, 43, 45, 47, 4,
The installation positions of 9, 51, 53, etc. are not limited to the illustrated positions.

The above-mentioned high-order controller 55 includes the low-order controllers 8, 14, 16, 22, 24, 32, 3
It communicates with the low-order controller 36 and communicates with the lower-level controller, and controls the number of rotations so that the number of rotations becomes as instructed.

The upper controller 55 receives instructions such as thread switching from the upper main controller 56,
Conversely, various kinds of information in the yarn manufacturing process are transmitted to manufacture the yarn in a close relationship.

The main controller 56 may be provided for each of a series of yarn manufacturing apparatuses, or the main controller 56 may also serve as the upper controller 55 depending on the scale and conditions.

When AC power is supplied from an external power source in the above-described power system, the DC power is converted by a converter 54 into a necessary amount in the yarn production line, and the power is supplied to the yarn production equipment base by one power supply cable 57. And is distributed to each motor in the machine base.

Then, the motor is converted into AC by an inverter mounted on each motor, and each motor is rotated at a preset number of rotations.

As shown in FIG.
When the cable 5 is installed on the side of the yarn manufacturing facility, the cables wired from the electric panel are a power supply cable 57 used for DC transmission and a transmission system for transmitting and receiving signals from the main controller 56 and a signal transmission cable from the LAN. Only the number of cables interconnecting the electric panel and the yarn manufacturing facility becomes very small.

The motors 7, 12, 13, 20, 2,
1, 29, 30, 31; lower-level controllers 8, 14, 16, 22, 24, 32, 34, 36 for driving the motors and inverters 9, 15, 17, 23, 25, 33, 35;
37 and a pulse pickup 39 for extracting a rotation signal,
The 41, 43, 45, 47, 49, 51, 53 and the upper controller 55 are located in the (A) zone on the side of the textile manufacturing machine, and the electric panels are located in the (B) zone such as an electric room remote from the manufacturing facility. The main controller 56 for managing and controlling the entire factory is installed in each zone (C) such as a management control room where a normal atmosphere is guaranteed.

On the other hand, in the conventional yarn manufacturing equipment, as shown in FIG. 3, a so-called inverter device in which a converter and an inverter are integrated is provided with a motor 7 for driving a gear pump of the spinning device 1 and a first roller device 2. Motors 12 and 13 for driving the rollers, motors 20 and 21 for driving the rollers of the second roller device 3, a motor 29 for driving the traverse mechanism 26 of the winding device 4, and motors 30 and 31 for driving the spindles 27 and 28. , And inverter devices 70, 71, 72, 73,
74, 75, 76, 77, 78 and each motor 7, 1
2, 13, 20, 21, 29, 30, and 31 are installed in a zone (B) such as an electric room far from the yarn manufacturing facility,
The main controller 79 is installed in a zone (C) under a normal air environment that does not include an atmosphere such as an oil agent, which is far away from the yarn manufacturing facility.

Accordingly, the inverter 70 of the yarn manufacturing facility
A large number of signal transmission cables and power supply cables are arranged between the controller 77 and the controller 78.

Further, a long signal transmission cable from the rotation speed pickup, which is important for transmitting the rotation speed information of the motor to the controller 78 and controlling the rotation to a predetermined rotation speed, is connected to the yarn manufacturing equipment and the controller. Since the signal transmission cable is wired in between, the signal transmission cable is apt to carry noise, which accounts for many of the causes of abnormal rotation speed.

In this case, the motor speed information is detected and
The rotation speed information detecting pickup for sending the information to the controller is provided in the zone (A) by the controller 7 for driving the motor.
8. The inverter devices 70 to 77 are in the (B ') zone, and the main controller 79 for managing and controlling the entire factory is (C').
It can be seen that the size of the space required for installing the electric panel and the like, the number of cables connecting each device, the length, and the like are largely different from those of FIG.

In FIG. 1, since the converter 54, which is the drive power supply for the rotating means in the yarn manufacturing equipment, is shared, even if the power supply voltage may drop for a very short time due to an instantaneous power failure, etc. The energy due to the inertial force of the rollers 10, 18 and the take-up spindle 27 is returned to the converter 54 once, and the lower controllers 14, 2,
By performing regression control between the controllers 2 and 34 and the upper controller 55, it is easy to maintain the relative speed ratio between the rollers, and it is possible to maintain the thread breakage that has occurred in the past without breaking the thread. Becomes

[0040]

According to the yarn manufacturing equipment of the present invention, a common converter for supplying DC power to at least two or more inverters is installed outside the motor, as described in claim 1. Since the motor is provided with an inverter for converting the DC power from the converter to a required frequency, the distance between the motor and the inverter can be extremely short, and many long cables connecting between the motor and the inverter can be provided. Is not required, the installation space can be reduced, the operation of attaching / detaching the device and the operation of maintenance and the like, the wiring work of the cable and the like can be facilitated, and the cost can be reduced.

According to the yarn manufacturing equipment of the present invention, the pulse generator for detecting the motor speed and the pickup as described in claim 2 are mounted on the motor, and the motor speed information from the pickup and the motor speed information are output to the outside of the motor. The motor controller controls the motor speed to a preset speed by changing the inverter frequency by matching the speed command signal from the installed upper-level controller, and the lower-level controller that controls the start / stop operation of the motor to the motor. With this configuration, the converter is shared between the rotating means in a series of yarn manufacturing equipment, so that even if an instantaneous power failure occurs for any reason, the rollers will not be held. By applying a predetermined control by the controller by the action of the back electromotive force generated by the inertia force, the thread trimming It is possible to reduce the trouble of such.

In this case, it is needless to say that even in the case of an instantaneous power failure, it is necessary for each controller to be guaranteed by another power source which is not affected by the power failure.

Further, since the distance between the controller and the pulse pickup for detecting the number of rotations of the motor and transmitting the rotation number information to the lower-level controller is short, noise is less likely to be placed on the signal transmission cable. The rotation speed control can be performed easily and reliably.

Further, since the electric parts such as the lower controller, the inverter, and the pulse pickup for detecting the number of revolutions, which are hard to find at the time of the device failure, are easily mounted in the motor. This reduces the time required to respond to equipment failures overall, reduces the size of each electrical component, and reduces the amount of heat generated by each component, thereby reducing troubles such as deterioration of insulation due to adhesion of oil mist. Can be done.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a yarn manufacturing equipment according to the present invention.

FIG. 2 is a schematic sectional view showing one embodiment of a configuration of a motor in which a lower controller and an inverter are mounted in FIG.

FIG. 3 is a block diagram showing one embodiment of a conventional yarn manufacturing equipment.

[Description of sign]

REFERENCE SIGNS LIST 1 spinning device 2 first roller device 3 second roller device 4 winding device 5 die 6 gear pump 7, 12, 13, 20, 21, 29, 30, 31 motor 8, 14, 16, 22, 24, 32, 34 , 36 Lower controller 9, 15, 17, 23, 25, 33, 35, 37 Inverter 10, 18 Gode roller 11, 19 Separate roller 26 Traverse mechanism 27, 28 Spindle 38, 40, 42, 44, 46, 48, 50, 52 pulse generator 39, 41, 43, 45, 47, 49, 51, 53 pulse pickup 54 converter 55 host controller 56 main controller 57 power supply cable

Claims (2)

[Claims] 1. A spinning device for spinning a yarn, a cooling device for cooling the spun yarn, a roller device for conveying the cooled and solidified yarn, a traverse mechanism and a bobbin for traverse. A winding device having a spindle for use in a production facility in which at least the roller device and a motor installed in the winding device are speed-controlled by separate inverters. And a common converter section for supplying the same is installed outside the motor, and an inverter section for converting DC power from the converter section to a required frequency is mounted on the motor. 2. A pulse generator for detecting a motor speed and a pickup are mounted on the motor, and the motor speed information from the pickup is compared with a speed command signal from a higher-order controller installed outside the motor. 2. The yarn according to claim 1, wherein the frequency is changed to control the number of revolutions of the motor to a preset number of revolutions, or a lower-level controller that controls the start / stop operation of the motor is mounted on the motor. production equipment.