JP3246323B2 - Spinning machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spinning machine such as a ring spinning machine and a ring twisting machine, and more particularly to a spinning machine in which a lifting drive system is driven by a motor different from a motor for driving a spindle drive system.

[0002]

2. Description of the Related Art In a spinning machine such as a ring spinning machine or a ring twisting machine, a ring rail is gradually raised while repeating a raising and lowering movement of a ring rail during operation of a machine base for forming a tube yarn, and a lappet angle is accordingly increased. A lifting device that raises and lowers is also adopted. In the case of performing a filling building, the lifting drive system is driven by a motor different from the roller part and the spindle drive system in order to easily change the amount by which the ring rail moves up and down each time and the amount of winding up once. An arrangement has been proposed. However, the moment of inertia is greatly different between the roller part and the spindle drive system and the lifting drive system,
The moment of inertia of the lifting drive is much smaller than the moment of inertia of the spindle drive. As a result, if the power supply to the spindle drive system and the motor for the lifting drive system are simultaneously stopped at the time of a power failure, the spindle drive system continues to operate for a while even after the lift drive system is stopped. Then, the yarn is wound for a long time at the same position of the tube yarn, and there is a disadvantage that the yarn is frequently broken at the time of restarting, or the loop is missed at the time of rewinding in the winding process.

[0003] In order to solve this problem, 3-4
No. 8223 discloses that a roller part and a spindle drive system are driven by a main motor, a lifting drive system can be driven by a lifting motor, and both drive systems are connected via a clutch, and the clutch is connected only during a power failure. An apparatus provided with a control mechanism for setting a state is disclosed. In this device, the draft part and the spindle drive system are driven by a main motor during normal operation, and the lifting drive system is driven by a lifting motor. During the operation of the machine stand, when the power supply to the main motor and the lifting motor is stopped due to a power failure, both drive systems are connected by a clutch. Both drive systems are driven in a synchronized state until a stop even after the respective motors are coasted.

In a draft part drive system of a ring spinning machine, a plurality of draft rollers are synchronously driven via a gear train, and when changing the draft ratio, some gears (change gears) constituting the gear train are replaced. Then, the rotation speed ratio of each draft roller is changed. When replacing a change gear, it is necessary to move the change gear along the longitudinal direction of the machine base and remove it from the rotating shaft, and to move another change gear along the longitudinal direction of the machine base to fit the rotating gear. . Since the motor (main motor) for driving the spindle drive system is large, if the main motor and the gear train of the draft part drive system are arranged at the same side end of the machine base, the workability at the time of changing gear change is poor. Become. Therefore,
In the ring spinning machine, a main motor for driving a spindle drive system is provided at one end (out end) side of the machine base to improve workability when changing gears are exchanged, and constitutes a draft part drive system. The gear train is arranged on the other end (gear end) side.

In the apparatus disclosed in Japanese Utility Model Publication No. 3-48223, the lifting motor and a transmission mechanism for transmitting the rotation of the spindle drive system to the lifting drive system in the event of a power failure are arranged on the gear end side. Therefore,
In a spinning machine equipped with a lifting device disclosed in Japanese Utility Model Publication No. 3-48223, as shown in FIG.
1, a main motor M for driving a spindle drive system and a draft part drive system, and a main motor M
And a main control device 63 for controlling the power supply. The lifting motor 64 for driving the lifting drive system is provided on the gear end 66 side where the gear train 65 constituting the draft part drive system is provided, and the lifting control device 66 is also provided on the gear end 66 side.

The lifting drive system must be accurately driven in synchronization with the spindle drive system, and feedback is required when controlling the lifting motor 64. In the spinning machine, the overall length of the frame is long, and the distance between the out end 62 and the gear end 66 is large. Therefore, when the main control device 63 disposed on the out end 62 side controls the lifting motor 64 disposed on the gear end 66 side,
Disturbance is likely to occur in signals transmitted and received between the lifting motor 64 and the main controller 63, and it becomes difficult to operate the lifting motor 64 stably. Therefore, the lifting control device 67 is arranged on the gear end 66 side together with the lifting motor 64.

Japanese Unexamined Patent Publication No. Sho 60-246826 discloses a spinning machine in which a draft part driving system, a lifting driving system, and a spindle driving system are driven by separate motors. An apparatus that drives and stops each drive system in a synchronized state is disclosed. Also disclosed is a device in which a motor of a spindle drive system is caused to rotate by inertia during a power failure, and motors of other drive systems are driven by a backup power supply.
These devices are also driven in a state of being synchronized with each other at the time of a power failure until a stop.

[0008]

Problems to be Solved by the Invention
In the case of the lifting device disclosed in Japanese Patent Publication No. 23, since the main control device 63 and the lifting control device 67 are provided to operate the spinning machine, synchronization between the two control devices 63 and 67 is required, and the control is complicated. Problem.

In the apparatus disclosed in Japanese Patent Application Laid-Open No. 60-246826, a transmission mechanism for transmitting the rotation of the spindle drive system to the lifting drive system at the time of power failure as a measure against power failure is not required, and the lifting motor is driven by the draft part drive. It is not necessary to provide on the same side (gear end) as the arrangement side of the gear train of the system. However, driving a lifting motor or a draft part driving motor with a backup power supply during a power failure requires a backup power supply having a large capacity, and the backup power supply becomes large. If the lifting motor is arranged on the out end side together with a large backup power supply, there is a problem that the volume on the out end side increases.

The present invention has been made in view of the above problems, and a first object of the present invention is to provide a spinning machine in which a lifting drive system is driven by a different motor from a main motor driving a spindle drive system. An object of the present invention is to provide a spinning machine that can accurately drive a motor that drives a drive system with simple control. A second object is to provide a spinning machine that can operate a lifting drive system with a simple configuration and with less power consumption than during normal operation until the inertia rotation of the spindle drive system stops or almost stops during a power failure. It is in.

[0011]

To achieve pre-Symbol purpose Means for Solving the Problems] In the invention described in claim 1, there in a spinning machine lifting drive system is driven by the main motor and another motor for driving the spindle drive system The lifting drive during a power outage
The inertia rotation of the spindle drive system is stopped or almost stopped.
Measures against power failure and motor for lifting
Are arranged at the same side end of the machine stand, and the power failure countermeasure means
Rif with less power consumption than the lifting motor
Power failure motor that can drive the driving system and power failure
The inertia rotation of the spindle drive system stops or almost stops
Control means for controlling the power failure time motor until
Detects the occurrence of a power failure and outputs a power failure detection signal to the control means.
Power failure detection means, and the power failure motor and
And a battery for supplying power to the control means.
You .

[0012]

[0013]

According to a second aspect of the present invention, in the first aspect of the invention, the roller part drive system, the spindle drive system, and the lifting drive system are driven by different motors, respectively. Control means
It was provided on the same side end portion and the lifting motor.

In the first aspect of the present invention, the spindle drive system is driven by the main motor, and the lifting drive system is driven by a lifting motor different from the main motor. Since the main motor and the lifting motor and the control means for controlling both motors are arranged at the same side end of the machine base,
The arrangement interval between the lifting motor and its control means is significantly shorter than when each is arranged on the opposite side of the machine base. Then, when performing feedback control of the lifting motor, disturbance is less likely to enter into the control signal of the lifting motor output from the control means and the signal indicating the operating state of the spindle drive system and the lifting drive system input to the control means, The lifting drive system is driven with high accuracy.

Further, when a power failure during machine base operation occurs via a power fault protection means arranged on the same side end portion and the lifting motor, inertia rotation is stopped or nearly stopped lifting drive system spindle drive system Driven until you do.

If a power failure occurs during the machine operation, the lifting drive system is driven by a power failure motor driven by battery power with a smaller power consumption than the lifting motor. In the event of a power failure, the control means is backed up by the battery, and recognizes the occurrence of the power failure based on the power failure detection signal output from the power failure detection means, and drives the power failure motor until the inertial rotation of the spindle drive system stops or almost stops. .

According to the second aspect of the present invention, the roller part drive system is driven by a motor different from the motor that drives the spindle drive system or the lifting drive system. And
Riff motor and its control unit for the roller part drive system
It is provided at the same side end as the motor for the motor . Therefore, the number of components disposed on the gear end side of the machine is greatly reduced, and the machine is compact.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) A first embodiment in which the present invention is embodied in a ring spinning machine provided with a lifting device configured to vertically move a ring rail and a lappet angle by rotating a line shaft forward and backward. FIGS. 1-3
It will be described according to.

As shown in FIG. 1, an out end 2, which is one end of the spinning frame 1, has a main motor M for driving a draft part and a spindle drive system, and a lifting motor for driving a lifting drive system. 3 are provided. A control device 4 as control means for controlling the main motor M and the lifting motor 3 is provided at the out end 2.

As shown in FIG. 2, the driving shaft 5 extending along the longitudinal direction of the machine is driven to rotate by a main motor M via a belt transmission mechanism 6, and a spindle 7
(Only one weight is shown) is rotatably driven via a spindle tape 9 wound around a chin pulley 8 fixed to the driving shaft 5. As the main motor M, a variable speed motor driven via an inverter 10 is used, and a rotary encoder 11 as a spindle drive system operation detecting means is provided.
The rotating shaft 12a of the front bottom roller 12 constituting the draft part as a roller part is connected to the driving shaft 5 via a gear train 14a disposed on the gear end 13 side. Further, the rotation of the rotating shaft 12a is transmitted to a middle bottom roller and a back bottom roller (both not shown) constituting a draft part via a gear train 14b (shown in FIG. 1). Main motor M, belt transmission mechanism 6, driving shaft 5,
Chin pulley 8, spindle tape 9 and gear train 14a,
A draft part and a spindle drive system are constituted by 14b. The draft part and the spindle 7
Are disposed on both left and right sides of the spinning frame 1, but only one side is shown in FIG.

As shown in FIG. 2, a line shaft 15 (only one side is shown) is rotatably arranged along the longitudinal direction of a spindle rail (not shown), that is, in parallel with the driving shaft 5. Elevating units 18 for raising and lowering the ring rail 16 and the lappet angle 17 are arranged at predetermined intervals on the line shaft 15 (only one is shown). An elevating unit 18 includes a screw gear 19 fixed to the line shaft 15 so as to be integrally rotatable;
A nut body 21 is screwed into a screw portion 20a formed below the poker pillar 20 that supports the ring rail 16 or the lappet angle 17. The poker pillar 20 is supported by a machine frame (not shown) so as to be vertically movable. The nut body 21 is rotatably supported at a predetermined height position of the machine frame via a bracket (not shown), and has a screw gear 2 meshing with the outer periphery thereof.
1a is formed integrally. Two poker pillars 20 that support the ring rail 16 or the lappet angle 12 are provided adjacent to each other, and the screw gears 21a of the nut bodies 21 provided corresponding to the respective poker pillars 20 mesh with each other and one of the screw gears 21a is a screw gear 19
Is also engaged. These configurations are basically the same as those of the device disclosed in Japanese Patent Application Laid-Open No. 2-277826, for example.

At the end on the out end 2 side, a rotary shaft 22 constituting a line shaft drive system is provided.
The rotating shaft 22 is provided with a gear 23
Are fixed so as to be integrally rotatable. The gear 23 meshes with a gear 25 fixed to the output shaft 3a of the lifting motor 3 so as to be integrally rotatable. The lifting motor 3 uses, for example, an AC servomotor, and is equipped with a rotary encoder 26 as ring rail position detecting means for detecting the position of the ring rail 16.

At a position corresponding to the end of the line shaft 15 on the out end 2 side, the rotating shaft 27 is connected to the line shaft 1.
5 are arranged orthogonally. A worm 29 that meshes with a worm wheel 28 that is integrally rotatably fixed to the end of each line shaft 15 is fixed to both ends of the rotating shaft 27 so as to be integrally rotatable. A bevel gear 30 is fixed to the rotating shaft 22 so as to be integrally rotatable. The bevel gear 30 is fixed to an intermediate portion of the rotating shaft 27 so as to be integrally rotatable.
1 is engaged. An absolute type rotary encoder 32 as ring rail position detecting means is connected to an end of the line shaft 15 via a gear. The line shaft 15 is driven to rotate forward and backward with the forward and reverse rotation of the lifting motor 3. Lifting motor 3, rotating shafts 22, 27,
Gears 23, 25, worm wheel 28, worm 29
The bevel gears 30 and 31 constitute a line shaft drive system. Line shaft 15, lifting unit 1
A lifting drive system for raising and lowering the ring rail 16 and the lappet angle 17 by the line shaft drive system 8 and the line shaft drive system is configured.

The lifting drive system is provided with a gear 33 that meshes with the gear 23. The gear 33 is rotatably supported by an output shaft 34 a of a power failure motor 34 via an electromagnetic clutch 35. As the power failure motor 34, a motor that consumes less power (used power) than the lifting motor 3 is used. In this embodiment, as the power failure motor 34, a DC geared motor that is driven at the same voltage as the control device 4 and that can be driven forward and reverse is used. The power used by the lifting motor 3 is about several hundred W when performing a normal lifting motion, and about 1 kW when raising the ring rail 16 at high speed. On the other hand, the power used by the power failure motor 34 is about several tens of watts. The electromagnetic clutch 35 is configured to connect the gear 33 and the output shaft 34a in an excited state.

The main motor M is connected to the control device 4 via the inverter 10 and the lifting motor 3 is connected to the control device 4 via the servo driver 36. Control device 4, power failure motor 34, rotary encoders 11, 26, 32
The electromagnetic clutch 35 is configured so that both a normal power supply (not shown) and the battery 37 can be used as power supplies, and the power supply is switched from the normal power supply to the battery 37 when a power failure occurs. As the battery 37, for example, a battery having an electromotive force of 24V is used.

As shown in FIG. 1, the control device 4 includes a central processing unit (hereinafter, referred to as a CPU) 38 as a control means and an arithmetic means, a storage device 39, and an input / output interface 4.
0, and controls the main motor M, the lifting motor 3, the power failure motor 34, the electromagnetic clutch 35, and the like according to the program stored in the storage device 39. Control device 4
Is connected to an input device 41 for inputting spinning conditions and the like. The control device 4 includes rotary encoders 11, 26, 3
2 and an output signal of the power failure detecting means 42 are input.

The control device 4 calculates the position of the ring rail 16 based on the output signal from the rotary encoder 32 at the time of starting, and thereafter calculates the moving amount and position of the ring rail 16 based on the output signal from the rotary encoder 26. I do. That is, the absolute type rotary encoder 32 is used to confirm the position of the ring rail 16 at the time of startup, and is not used during operation. Then, during normal operation, the control device 4 calculates the reversal timing of the ring rail 16, which is the lifting condition input by the input device 41, based on the moving amount and the position of the ring rail 16, and the ring rail 16 and the like move up and down by a predetermined amount. The driving of the lifting motor 3 is controlled via the servo driver 36 so as to perform a movement.

The control device 4 controls the ring rail 1 when a power failure occurs.
The rotation direction of the power failure motor 34 is determined by the position 6. That is, if the position of the ring rail 16 at the time of the power failure is higher than the reference position, the control device 4 moves the ring rail 16 downward. And outputs a control signal for rotating the power failure motor 34 so as to drive the motor. The control device 4 includes a power failure detection unit 4
Input of the power failure detection signal from the electromagnetic clutch 35
And outputs a drive control signal for the power failure motor 34. The control device 4 stops the excitation of the electromagnetic clutch 35 and the drive of the power failure motor 34 when the inertia rotation of the spindle drive system is almost stopped based on the output signal of the rotary encoder 11. ing.

Next, the operation of the above-configured apparatus will be described. Prior to the operation of the machine stand, first, spinning condition data such as the number of spindle revolutions, spinning length, lift length, and chase length during spinning operation are input by the input device 41. The input device 41 inputs reference position data of the ring rail 16 necessary for determining the rotation direction of the power failure motor 34 at the time of power failure. As the reference position L _S , for example, when the ring rail 16 is moved down from the reference position at the time of a power failure, the yarn is wound around a reduced diameter portion below the trunk portion (a portion where the yarn winding diameter is constant) of the tube yarn. The lower limit position of the position where there is no state is adopted. Then, the main motor M and the lifting motor 3 are driven by a command from the control device 4 when the machine is started.

When the main motor M is driven, the spindle 7 is rotated via the belt transmission mechanism 6, the driving shaft 5, the chin pulley 8, and the spindle tape 9. The rotation of the driving shaft 5 is transmitted to the rotating shaft 12a via a gear train 14a, and the draft part is driven via a gear train 14b. When the lifting motor 3 is driven, the rotating shafts 22 and 27 and the worm 2
9 and the like, the line shaft 15 is rotated, and the nut body 21 is rotated via the screw gear 19. Then, the poker pillar 20 screwed to the nut body 21 is moved up or down, and the ring rail 16 and the like are moved up and down. The ring rail 16 and the like are moved up when the lifting motor 3 rotates in the forward direction, and are moved down when rotating in the reverse direction. The yarn sent from the front bottom roller 12 is wound around a bobbin via a snell wire and a traveler.

The controller 4 calculates the position of the ring rail 16 at the time of starting based on the output signal from the rotary encoder 32, and corrects the reference value of the rotary encoder 26 based on the calculated value. During operation, the movement amount and the position of the ring rail 16 are calculated based on the output signal from the rotary encoder 26 mounted on the lifting motor 3. The control device 4 controls the ring rail 16 by a distance corresponding to the amount of rise or fall of one chase input in advance.
The drive of the lifting motor 3 is controlled via the servo driver 36 so that the rotation direction of the lifting motor 3 is changed at the time of the movement.

When the normal power supply is cut off due to an abnormal situation such as a power failure during operation, the power supply to the main motor M, the lifting motor 3 and the like is stopped, and the main motor M and the lifting motor 3 rotate by inertia. When the normal power supply is cut off, the power supplies of the control device 4, the power failure motor 34, the electromagnetic clutch 35 and the rotary encoders 11, 26, 32 are switched to the battery 37. When the power failure detection signal is input from the power failure detection means 42, the control device 4 executes a control program at the time of power failure and controls the lifting drive system until the inertial rotation of the spindle drive system is almost stopped.

The control of the lifting drive system during a power failure is shown in FIG.
Is performed according to the flowchart of FIG. That is, the control device 4
When a power failure detection signal is input from the power failure detection means 42, the position L ₀ of the ring rail 16 at the time of the power failure occurs in step S1.
Is calculated based on the output signal of the rotary encoder 26, and the electromagnetic clutch 35 is excited in step S2. Next, the control device 4 compares the position L ₀ of the ring rail 16 at the time of the occurrence of the power failure with the reference position L _S in step S3. If the position L ₀ of the ring rail 16 is higher than the reference position L _S (L ₀ > L _S ), the process proceeds to step S4, where a control signal for lowering the ring rail 16 is provided, and the position L ₀ is the reference position L _S If (L ₀ ≦ L _S ), the process proceeds to step S5, where control signals for raising the ring rail 16 are output to the servo driver 36, respectively. As a result, the ring rail 16 is moved in a predetermined direction by the power failure motor 34 at a lower speed than during normal operation.

Next, the control device 4 controls the rotary encoder 11
The operation state of the draft part and the spindle drive system, that is, the state of the inertia rotation, is determined based on the output signal of the above. Specifically, the inertial rotation speed of the spindle drive system is calculated in step S6, and it is determined in step S7 whether the inertial rotation speed is equal to or less than a predetermined speed. The inertial rotation of the spindle drive system gradually slows down and eventually stops. The control device 4 proceeds to step S8 when the spindle drive system is almost stopped, that is, when the inertia rotation speed calculated in step S6 becomes equal to or less than the predetermined speed, and outputs a stop signal of the power failure motor 34, A demagnetization signal is output to the electromagnetic clutch 35, and a series of control is completed. As a result, the driving force to the lifting drive system is cut off, the lifting drive system is stopped, and the spindle drive system is also stopped a little later. Although the spindle drive system stops slightly later than the stop of the lifting drive system, the amount of rotation of the spindle 7 between the stop of the lifting drive system and the stop of the spindle drive system is less than one rotation. There is no problem if the system stops first.

The time during which coasting of the spindle drive system is continued during a power failure depends on spinning conditions. Since the power failure motor 34 is driven at a constant speed, the distance that the ring rail 16 moves during that time also depends on the spinning conditions. different. In a configuration in which the ring rail 16 simply moves in a fixed direction from the time of the power failure, the ring rail 16 moves to a position beyond the yarn winding range of the thread depending on the spinning conditions and the position of the ring rail 16 at the time of the power failure. What happens when you do. As a result, a trouble occurs at the time of restarting after the blackout of the power supply or at the time of rewinding in the winder process. However, in this embodiment, the rotation direction of the power failure motor 34, that is, the moving direction of the ring rail 16 at the time of the power failure is determined based on the position of the ring rail 16 at the time of the power failure, and the inertia rotation of the spindle drive system at the time of the power failure. The yarn wound around the tube yarn while the operation is continued is reliably wound up at a position where the above-mentioned inconvenience does not occur.

When the power failure is resolved, the control device 4 calculates the position of the ring rail 16 from the rotary encoder 32. If the stop position of the ring rail 16 is out of the chase at the time of the power failure, the ring rail is moved to a position where the ring rail 16 reverses to the rising position in the chase movement following the chase movement at the time of the power failure. The driving of the lifting motor 3 is controlled so as to continue the elevating movement interrupted by the occurrence. When the stop position of the ring rail 16 is within the chase at the time of the occurrence of the power failure, the control device 4 controls the driving of the lifting motor 3 so as to continue the elevating movement interrupted by the occurrence of the power failure after restarting the machine. .

This embodiment has the following effects. (A) Since the main motor M, the lifting motor 3 and the control device 4 for controlling the two motors M and 3 are disposed at the same side end (out end 2) of the spinning frame 1, the lifting motor is used. The length of a wiring for sending a signal necessary for feedback-controlling No. 3 is reduced. As a result, the control signal of the lifting motor 3 output from the control device 4 and the signals (operation signals of the rotary encoders 11, 26, and 32) input to the control device 4 to inform the operating states of the spindle drive system and the lifting drive system. ), Disturbance is less likely to occur, and the lifting drive system can be accurately driven by simple control. Out end 2 and gear end 13
The number of wirings for connecting the components is reduced, the number of assembling steps is reduced, and the manufacturing cost is reduced.

(B) As a power failure countermeasure for driving the lifting drive system until the spindle drive system almost stops at the time of the power failure, the battery 37 is driven without providing a rotation transmission mechanism between the lifting drive system and the spindle drive system. Motor 34 for driving the lifting drive system with less power consumption than the lifting motor 3
Was provided. As a result, the structure is simplified as compared with the case where a rotation transmission mechanism is provided between the lifting drive system and the spindle drive system, and the lifting motor 3 and the power failure countermeasure means are disposed on the out end 2 side. It will be easier.

(C) The power failure motor 34 is configured to be rotatable in the forward and reverse directions.
The rotation direction of the power failure motor 34 is determined based on the position 6. As a result, the yarn wound during the inertia rotation of the spindle drive system is prevented from being broken when the machine is restarted, regardless of the amount of yarn wound on the tube yarn when a power failure occurs, and Is wound around the tube thread without hindering the rewinding of the thread.

(D) As a reference position for determining the rotation direction of the power failure motor 34, when the ring rail 16 is moved down from the reference position during a power failure, the yarn is wound around the lower reduced diameter portion of the tube thread. The lower limit position of the position where the state cannot be performed is adopted. Therefore, the ring rail 16 is often located above the reference position during a power failure. As a result, the power failure motor 34 often drives the lifting drive system in the direction in which the ring rail 16 is lowered, and the power consumption is reduced.

(E) Since a gad motor is used as the power failure motor 34, the motor becomes compact as compared with a case where a speed reduction mechanism is provided between the motor 34 and the rotary shaft 22. (F) Since the state of the inertia rotation of the spindle drive system is determined based on the output signal of the rotary encoder 11 provided in the main motor M, the lifting drive system is driven by the spindle drive regardless of the rotational speed of the spindle when a power failure occurs. It can be stopped easily and reliably shortly before the inertial rotation of the system stops. In addition, the rotation speed of the power failure motor can be changed regardless of the rotation speed of the spindle.For example, the speed should be high when spinning thick yarn, and slow when spinning fine yarn. Can be.

(G) Since the power supply to the power failure motor 34 is stopped shortly before the inertia rotation of the spindle drive system is completely stopped at the time of the power failure, the power failure during the inertia rotation of the spindle drive system is stopped. The power consumption is smaller than when the motor 34 is stopped.

(H) Since the power failure motor 34, the electromagnetic clutch 35, and the battery 37 are disposed at the same side end as the control device 4, the required wiring length is reduced, and control can be performed with high accuracy. In addition, the number of wirings is reduced, the number of assembling steps is reduced, and the manufacturing cost is reduced.

(Second Embodiment) Next, a second embodiment will be described with reference to FIG. This embodiment differs from the first embodiment in that a power failure countermeasure unit having a different configuration from the first embodiment is provided on the gear end side. Therefore, this embodiment also has the effect (a).

As a power failure countermeasure, a rotation transmitting mechanism 43 for transmitting the rotation of the spindle drive system to the lifting drive system during a power failure is provided on the gear end 13 side. The rotation transmission mechanism 43 is capable of transmitting the rotation of the rotation shaft 44 disposed parallel to the line shaft 15 to both the line shafts 15, and the rotation transmitting the rotation of the driving shaft 5 via a gear train. A shaft 46 and a belt transmission mechanism 47 disposed between an end of the rotation shaft 46 and the rotation shaft 44 of the gear transmission mechanism 45 are provided. Gear transmission mechanism 4
5 is a bevel gear 4 instead of being connected to both line shafts 15 via a worm and a worm wheel.
They are connected via 8,49. Belt transmission mechanism 47
Is configured to transmit the rotation of the rotating shaft 46 to the rotating shaft 44 when the electromagnetic clutch 50 provided on the rotating shaft 44 is in an excited state. Electric power is supplied to the electromagnetic clutch 50 from the battery 37 at the time of a power failure, and excitation and demagnetization control is performed based on a control signal from the control device 4.

In the normal state (when there is no power failure), the electromagnetic clutch 5
0 is kept in a demagnetized state, and the rotation of the spindle drive system is not transmitted to the lifting drive system during the operation of the spinning frame 1. When a power failure occurs, the main motor M and the lifting motor 3 rotate by inertia. The electromagnetic clutch 50 is excited by an excitation signal from the control device 4, and the rotation of the driving shaft 5 is transmitted to the lifting drive system via the rotation transmission mechanism 43. Therefore, while the electromagnetic clutch 50 is kept in the excited state, the lifting drive system is driven in synchronization with the spindle drive system, and the ring rail 16 moves in one direction. Ring rail 1 when power outage occurs
Depending on the position of 6, there is a possibility that the ring rail 16 may move to a position beyond the yarn take-up range during the inertial rotation of the spindle drive system. The controller 4 calculates the position of the ring rail 16 based on the output signal of the rotary encoder 26, and when the ring rail 16 moves to the limit of the yarn winding range of the yarn, the inertial rotation of the spindle drive system is almost stopped. Before entering the state, the demagnetizing signal is output to the electromagnetic clutch 50 to stop the lifting drive system.
Therefore, the yarn is not wound at a position beyond the yarn winding range of the tube yarn during the inertial rotation of the spindle drive system.
Further, the power failure motor 34 is not required, and power consumption is reduced.

(Third Embodiment) Next, a third embodiment will be described with reference to FIG. In this embodiment, the draft part drive system is driven by a motor different from the spindle drive system, and the motor for the draft part drive system and its control means are also provided at the same side end (out end 2) as the main motor and the like. I have. In the draft part drive system, a plurality (in this embodiment, two or more
), A first draft motor 51 for driving the front bottom roller, and a second draft motor 52 for driving other draft rollers after the middle bottom roller. Motor 5 for both drafts
Servo motors 1 and 52 are used, and are controlled by the control device 4 via a servo driver (not shown). Each of the draft motors 51 and 52 is provided with a rotary encoder (not shown) that feeds back the operating state of the draft part drive system. The spindle drive system and the lifting drive system are configured the same as in the first embodiment.

On the gear end 13 side, a belt transmission mechanism 53 for transmitting the rotation of the driving shaft 5 to the rotating shaft 12a of the front bottom roller 12 at the time of power failure, and other draft rollers after the middle bottom roller at the time of power failure. And a rotation transmission mechanism 54 for transmitting the rotation to the motor. Each of the belt transmission mechanism 53 and the rotation transmission mechanism 54 is provided with an electromagnetic clutch (not shown) connected at the time of a power failure. The rotation of the driving shaft 5 is transmitted to the rotation shaft 12a only when a power failure occurs, and the rotation of the rotation shaft 12a is performed. Is transmitted to other draft rollers after the middle bottom roller.

Therefore, in this embodiment, by changing the rotation speed ratio of both draft motors 51 and 52,
Draft rate can be easily changed without troublesome change gear replacement. Then, both draft motors 51, 52
The motor is also disposed on the out-end 2 side similarly to the other motors, and is controlled by the control device 4. Therefore, the draft part drive system also outputs both draft motors 5 output from the controller 4.
Disturbance hardly occurs in the control signals 1 and 52 and the feedback signal input to the control device 4, and the draft part drive system can be accurately driven by simple control. In addition, at the time of power failure, the draft part drive system is connected to the spindle drive system and driven synchronously until the inertia rotation of the spindle drive system stops, so that thread breakage due to excessive stretching of the roving is prevented. You.

The present invention is not limited to the above embodiments, but may be embodied as follows, for example. (1) In the first embodiment, the power failure motor 34
May be stopped simultaneously with the stop of the inertial rotation of the spindle drive system. Also in this case, the same effects as in the first embodiment are exerted except for (f) and (g). Also in the third embodiment, the power failure motor 34 may be stopped at the same time as the inertia rotation of the spindle drive system is stopped.

(2) In the first embodiment, instead of determining the drive stop time of the power failure motor 34 based on the output signal of the rotary encoder 11 mounted on the main motor M, a power failure occurrence detection signal is output. After a lapse of a predetermined time from the start, the power failure motor 34 is stopped. The predetermined time is set based on spinning conditions and a spindle rotation speed at the time of occurrence of a power failure. In this case, it is not necessary to detect the operation state of the spindle drive system after the control of the power failure motor 34 is started.

(3) In the first embodiment, the reference position for determining the rotation direction of the power failure motor 34 is such that when the ring rail 16 is moved down from the reference position during the power failure, the yarn is compressed. It is only necessary that the distance be between the lower limit position of the position where the yarn is not wound around the diameter portion and the upper limit position where the yarn does not exceed the winding range of the tube yarn when the ring rail 16 is moved upward from the reference position. .

(4) The position of the ring rail 16 at the time of the power failure is compared with the reference position to determine the rotation direction of the power failure motor 34 at the time of the power failure, and the ring rail 16 is moved in a fixed direction until it stops. Alternatively, the power failure motor 34 may be driven so that the chase movement before the power failure occurs is continued. In this case, since the ring rail 16 moves so as to continue the predetermined chase movement only by slowing down its moving speed, the input of the reference position becomes unnecessary, and when restarting the operation of the machine after the blackout of the power failure, There is no need to move the ring rail 16 to a predetermined position.

(5) Instead of using a DC motor capable of rotating forward and backward as the power failure motor 34, a non-reversible DC motor is used, and as shown in FIG.
Two sets of gear trains 55 and 56 for raising and lowering are provided between the rotary shaft 4 and the rotating shaft 22. The ascending gear train 55 includes the gears 23 and 33 of the first embodiment, and a descending gear train 56 is newly added. The torque of the output shaft 34 a is transmitted to the gear train 56 via an electromagnetic clutch 57. In this device, when only the electromagnetic clutch 35 is excited during a power failure, the rotating shaft 22 is driven in a direction to raise the ring rail 16 via a gear train 56, and when only the electromagnetic clutch 57 is excited, the rotating shaft 22 is driven via the gear train 56. 22 is driven in a direction to lower the ring rail 16. Therefore,
Even if the power failure motor 34 is a motor that cannot be driven in reverse rotation, the direction of movement of the ring rail 16 can be freely changed by controlling the excitation and demagnetization of the electromagnetic clutches 35 and 57 by the control device 4. The control of the embodiment, (3) and (4) can be performed.

(6) In the first embodiment, the ring rail 16 can be moved in either one of the up and down directions instead of the structure in which the ring rail 16 can be moved in either of the up and down directions in the event of a power failure. Configuration. Then, when the ring rail 16 reaches the boundary of the predetermined winding range of the thread, the power failure motor 34 is stopped even if the inertia rotation of the spindle drive system is not substantially stopped. In this case, driving the power failure motor 34 in the direction in which the ring rail 16 is lowered reduces power consumption. (7) In the second embodiment, as the rotation transmission mechanism 43 disposed on the gear end side, two sets of ascending and descending gear trains are provided between the rotating shafts 44 and 46, and each gear train is provided. Is provided with an electromagnetic clutch. Then, similarly to the first embodiment, the ring rail 1 at the time of occurrence of a power failure
The direction in which the ring rail 16 is moved is determined based on the position 6 and the corresponding electromagnetic clutch is excited. In this case, the yarn wound during the inertia rotation of the spindle drive system is prevented from being broken when the machine is restarted, regardless of the amount of yarn wound around the tube yarn at the time of the occurrence of the power failure. Is wound around the tube thread without hindering the rewinding of the thread.

(8) In the third embodiment, instead of providing the belt transmission mechanism 53 and the rotation transmission mechanism 54 as a means for driving the draft part drive system in synchronization with the spindle drive system at the time of a power failure, both drafts are used. Motor 5
A backup battery for supplying power to the power supply units 1 and 52 is provided. At the time of a power failure, the control device 4 controls both draft motors 51 and 52 based on the rotation speed of the spindle drive system.
May be feedback controlled. In this case, the draft part drive system can be rotated at the draft ratio corresponding to the spinning conditions at the time of the power failure, and the spun yarn does not have a thickness unevenness.

(9) In the third embodiment, the draft part may be driven by one draft motor. In this case, a change gear must be exchanged to change the draft rate, but a change gear for changing the number of twists is not required.

(10) A DC servo motor may be used as the lifting motor 3. In addition, a variable speed motor whose speed is controlled through an inverter is used in place of the servomotor, and its output shaft and line shaft 15 are used.
A mechanism for changing the rotation direction of the line shaft 15 by excitation and demagnetization of a pair of electromagnetic clutches may be provided between the two. Further, a constant speed motor may be used as the main motor M.

(11) As a spindle drive system operation detecting means for detecting an operation state of the spindle drive system, a rotary encoder is attached to a portion rotated in synchronization with the main motor M, for example, the driving shaft 5, instead of the main motor M. Is also good. Further, a tacho generator may be attached instead of the rotary encoder. When a tachogenerator is mounted, unlike a rotary encoder, a pulse signal proportional to the number of revolutions is output without power backup, thereby simplifying wiring. Alternatively, a dog may be provided at a position rotated by the main motor, and rotation of the dog may be detected by a proximity switch.

(12) A means other than the rotary encoder may be used as the position detecting means of the ring rail 16. For example, a so-called magnet scale having a large number of permanent magnets in which N poles and S poles are alternately arranged near a lifting range of the ring rail is arranged, and its detection unit is fixed to the ring rail 16 so as to be integrally movable. An apparatus having the above configuration may be employed. Further, a linear potentiometer may be used as the position detecting means. The mounting position of the rotary encoder may be an appropriate position as long as the component is rotated in synchronization with the rotation of the line shaft 15.

(13) Instead of the configuration in which the spindle 7 is driven by the spindle tape 9 wound around the chin pulley 8, a configuration in which the spindle 7 is driven by a tangential belt may be adopted. Moreover, you may apply to a ring twisting machine.

The inventions other than those described in the claims which can be grasped from the above embodiments and modified examples will be described below together with their effects. (1) In the invention according to claim 1, the power failure countermeasure means is provided on the opposite side of the machine base with respect to the lifting motor,
As a power failure countermeasure, a rotation transmission mechanism having an electromagnetic clutch for transmitting the rotation of the spindle drive system to the lifting drive system during a power failure is adopted. In this case, by connecting the electromagnetic clutch at the time of power failure, the lifting drive system can be driven in synchronization with the spindle drive system, and a motor for power failure is not required, thereby reducing power consumption.

(2) In the third aspect of the present invention,
The power failure motor is configured to be rotatable forward and backward, and the control means controls the power failure motor so as to continue the chase motion before the power failure based on the detection signal of the ring rail position detection means for detecting the position of the ring rail. Perform control. In this case, when a power failure occurs, regardless of the amount of yarn wound on the yarn, the yarn will interfere with the yarn when the machine is restarted until the inertia rotation of the spindle drive system stops. In addition, the yarn is wound so as not to hinder the winding of the yarn in the winder process. Further, when the operation of the machine base is restarted after the blackout of the electrolysis, it is not necessary to move the ring rail to a predetermined position.

(3) In the invention according to claim 4,
A plurality of drive motors are provided in the draft part drive system as the roller part drive system so that the draft rate can be arbitrarily changed. In this case, when the draft rate or the number of twists is changed to change the spinning conditions, it is not necessary to exchange the change gear.

[0066]

As described in detail above, claims 1 and 2
According to the invention described in 2, the spinning machine lifting drive system is driven by the main motor and another motor for driving the spindle driving system, it is possible to accurately drive the motor for driving the lifting drive system with a simple control it can.

Further, the lifting drive system can be operated with a simple configuration and with less power consumption than during normal operation until the inertia rotation of the spindle drive system stops or almost stops at the time of a power failure.

According to the second aspect of the present invention, the number of components disposed on the gear end side of the machine is greatly reduced, and the machine is compact.

[Brief description of the drawings]

FIG. 1 is a schematic view of a ring spinning machine according to a first embodiment.

FIG. 2 is a schematic perspective view of the drive system.

FIG. 3 is a flowchart showing an operation at the time of a power failure.

FIG. 4 is a schematic perspective view of a drive system according to a second embodiment.

FIG. 5 is a schematic diagram of a ring spinning machine according to a third embodiment.

FIG. 6 is a schematic perspective view of a power failure countermeasure according to a modified example.

FIG. 7 is a schematic view of a conventional ring spinning machine.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Spinning machine stand, 2 ... Out end, 3 ... Lifting motor, 4 ... Control device as control means, 5 ... Driving shaft which comprises a spindle drive system, 12 ... Front which comprises draft part as a roller part Bottom roller, 15: a line shaft constituting a lifting drive system, 18: a lifting unit, 26: a rotary encoder, 34: a power failure motor constituting a power failure countermeasure means, 37: a battery, 42: a power failure detection means, 43 ... Rotation transmission mechanism as power failure countermeasure means, 5
Reference numeral 1 denotes a first draft motor serving as a roller part drive system motor; 52 denotes a second draft motor;
... Main motor.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D01H 13/20 D01H 1/36

Claims (2)

(57) [Claims] 1. A spinning machine in which a lifting drive system is driven by a motor different from a main motor that drives a spindle drive system , wherein the lifting drive system is connected to the spindle drive system during a power failure.
A power failure pair that drives until inertial rotation stops or almost stops
And the lifting motor on the same side of the machine
The power outage countermeasure means is provided with a lower power consumption than the lifting motor.
Power failure motor that can drive the switching drive system, and the inertia rotation of the spindle drive
Control means for controlling the power failure motor until it stops
And detecting the occurrence of a power failure and outputting a power failure detection signal to the control means.
Power failure detection means for supplying power to the power failure motor and the control means during a power failure.
A spinning machine having a battery to supply . 2. A roller part drive system and a spindle drive system.
And the lifting drive system is driven by separate motors.
The roller part drive system motor and its control means.
Serial provided on the same side end portion and the lifting motor according to claim 1
A spinning machine according to claim 1.