JP3014403U - Rotating AC servo traverse device - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To reduce the cost of the traverse device of the pan winder and make it almost maintenance-free compared to maintenance around hydraulic pressure and ball screw maintenance. [Structure] By the output P2 of the speed command controller 8,
At the same time as controlling the inverter to realize winding at a constant yarn speed, the traverse device is controlled by rotating the timing pulley C left and right with an AC servo motor driven by an AC servo amplifier. However, a constant velocity linear motion is made to the left and right, and the traverse guide directly connected to it also moves in the same way. Also, AC
The left and right rotation speeds of the servo motor are independent,
Determined by the traverse left speed setter and the traverse right speed setter.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 In the present invention, the traverse device of the pan winder was conventionally of the hydraulic cylinder type in many cases, but instead of this, in order to realize a constant-velocity linear motion by controlling the forward / reverse rotation of the AC servomotor. The present invention relates to the technology of the rotary AC servo traverse device.

[0002]

[Prior art]

 In conventional pan winders, most of the traverse devices are hydraulic cylinder type. In addition, there are those that use AC servomotors and those that convert to linear motion at a constant speed in combination with a ball screw.

The hydraulic cylinder type is expensive because it has many peripheral devices such as valves and hydraulic pumps and is expensive, and it is necessary to regularly replace oil. On the other hand, with the combination of the AC servomotor and the ball screw, the state of the ball screw directly depends on the quality of the traverse movement. Therefore, the ball screw should also be replenished with grease on a regular basis and dust and dirt removed. It is necessary to check if there are any scratches, and after all, the ball screw itself is very expensive.

[0004]

[Problems to be solved by the device]

 The present invention uses an AC servomotor so that the cost is as low as possible and maintenance-free as compared with the conventional method.

Therefore, an object of the present invention is to establish a technique for directly driving a timing belt via a timing pulley by a forward / reverse rotation of an AC servo motor to realize a uniform linear motion.

In order to achieve the above object, in the traverse device in the pan winder of the present invention, the traverse guide etc. is directly controlled by controlling the forward and reverse rotation of the AC servomotor without using a hydraulic cylinder or a ball screw. Achieves fast linear motion. The inversion signal of the AC servo motor is controlled by the AC traverse amplifier by the left and right traverse left end proximity switches L and the traverse right end proximity switch R.

[0007]

[Action]

 According to the present invention, the cost can be considerably reduced as compared with the conventional traverse device, and since the AC servo motor is used, it is a maintenance-free and timing without using a ball screw. Since the pulley and timing belt are used, maintenance is easy, and if the timing belt is extended, you can also adjust it easily by attaching one tension pulley. . Further, there is an advantage that there is almost no place to replenish grease or oil.

[0008]

【Example】

 Although there are FIGS. 1 and 2, an embodiment of the school plan will be described mainly with reference to FIG. FIG. 1 shows a drive control yarn of a pan winder and a control yarn of a rotary AC servo traverse device of the present invention. Although not shown, the filament yarn Y from the yarn supplying pan 1 is guided to the winding pan 3 through the tensor and the traverse guide 2, and is traversed by the traverse guide 2 to the left and right in the arrow direction, It is wound into a predetermined pattern. The winding pan 3 is directly connected to the shaft of the winding motor 6. Reference numeral 7 is an inverter for varying the speed of the take-up motor 6, which receives the output frequency command from the speed instruction controller 8, that is, the speed command P2, and drives the take-up motor 6 at a frequency corresponding to the speed command. Driven to achieve uniform yarn speed winding. At the same time, the output of the speed command P2 is taken in by the AD converter of the sequencer 36, sampled at fixed intervals, and stored in the data register as digital data.

On the other hand, regarding the control of the traverse device, when the timing pulley C of 47 is rotated right and left by the AC servo motor of 49 driven by the AC servo amplifier of 50, the timing belt for traverse 5 is Performs uniform linear motion to the left and right, and the 2 traverse guides directly connected to it also do the same. When the 44 traverse guide base made of the iron piece supporting the traverse guide moves to the left and comes to the position of the traverse left end proximity switch L of 42, the inversion signal is output from the AC servo amplifier of 50 and the AC The servo motor reverses and the traverse guide 2 starts moving to the right. Then, since the AC servomotor is reversed again at the position of the traverse right end proximity switch R of 43, the traverse guide of 2 makes a constant-speed linear reciprocating motion between these two proximity switches. Although not shown, the stepping motors 33 and 33 rotate the control screw to gradually reduce the widths of the two close switches so that the two close switches are wound into a predetermined pan shape.

Further, the left and right rotational speeds of the AC servo motor are independently determined by a traverse leftward speed setter 51 and a traverse rightward speed setter 52, respectively.

As described above, the forward / reverse control of the AC servomotor 49 controls the timing belts 45, 46, and 47 directly to the traverse timing belt 5 for constant speed linear reciprocation without using a ball screw. A rotary AC servo traverse device can be realized by making a motion.

In addition to the control method described above, a DC servo motor, a brushless DC servo motor, or a high-output stepping motor can be used especially for the motor. In addition, a ball reducer without backlash or a harmonic drive reducer can be used for use in a place where the AC servo motor has a high rotation speed. Furthermore, the left and right traverse speeds can be set by the volume method and the pulse oscillator method. If the latter method is used, it will be 42 and 43 when combined with an AC servomotor with absolute encoder in the future. The traverse left end proximity switch L and the traverse right end proximity switch R are no longer needed, and the 33 stepping motors that control them are no longer needed, and the traverse width can be determined by directly positioning by the number of pulses. It will be possible, and since it is an absolute encoder, it will not be displaced even if a power failure occurs.

[0013]

[Effect of device]

 As described above, according to the present invention, the cost can be reduced as compared with the conventional hydraulic cylinder type or AC servo traverse device using a ball screw, and maintenance around the hydraulic pressure and maintenance of the ball screw are possible. Compared to, it is almost maintenance-free. Moreover, since the traverse timing belt is directly driven, there is an advantage that the efficiency of the system is increased.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a control yarn for carrying out the present invention.

FIG. 2 is a detailed view showing a configuration of a yarn speed detector 9 of FIG.

[Explanation of symbols]

 1 yarn feeding pan 2 traverse guide 3 winding pan 4 cradle handle 5 traverse timing belt 6 winding motor 7 inverter 8 speed command controller 9 yarn speed detector 10 roller 11 proximity switch 12 guide 1 13 guide 2 14 FV signal converter 15 yarn speed meter 16 speed setting device 17 winding yarn highest point 18 winding yarn intermediate point 19 winding yarn minimum point 20 speed command controller output signal 21 pan outer diameter setting digital switch 22 pan outer diameter digital data 23 winding pan Digital switch for setting angle 24 Digital data for angle of winding pan 25 Digital switch for setting maximum diameter of winding pan 26 Digital data for maximum diameter of winding pan 27 Run-stop signal 28 Sequencer digital output for pulse transmitter 29 Pulse transmitter 30 Pulse generator Out 31 stepping motor driver 32 stepping motor driver output 33 stepping motor (for traverse control) 34 sequencer power supply 35 sequencer CPU 36 sequencer AD converter 37 sequencer 8 point input A 38 sequencer 8 point input B 39 sequencer 16 point input 40 sequencer 8 point input C 41 Sequencer 16-point output 42 Traverse left end proximity switch L 43 Traverse right end proximity switch R 44 Traverse guide base (iron piece) 45 Timing pulley L 46 Timing pulley R 47 Timing pulley C 48 AC servo motor shaft 49 AC servo motor 50 AC servo amplifier 51 Traverse left direction speed setter 52 Traverse right direction speed setter

Claims (1)

[Scope of utility model registration request] 1. A winder that winds at a constant speed, by detecting the winding speed of the yarn by a signal from a roller that is rotated by the frictional force of the yarn and comparing it with a preset speed. AC driven by servo amplifier
When the timing pulley C is rotated to the left or right by the servo motor, the traverse timing belt makes a constant velocity linear motion to the left and right, and the traverse guide directly connected to the timing belt also moves in the same manner. When the traverse guide base made in step 5 moves to the left and reaches the position of the traverse left end proximity switch L, an inversion signal is output from the AC servo amplifier, the AC servo motor inverts, and the traverse guide begins to move to the right. , The AC servo motor is reversed again at the position of the right end proximity switch R of the traverse, the traverse guide reciprocates between these two proximity switches, and the width is gradually reduced by the stepping motor. When it comes in, it comes to be wound into a predetermined pan shape.
The left and right rotational speeds of the servomotor are independently determined by the traverse leftward speed setter and the traverse rightward speed setter. Thus, the rotary type can be realized by controlling the forward and reverse rotation of the AC servomotor. AC servo traverse device.