JPH0624648A - Wire pail winding device - Google Patents

Abstract

(57) [Summary] [Purpose] The present invention relates to a pail take-up device for a wire that rewinds a wire such as a welding wire from a material supply drum and stores it in a pail pack. To make it easier to start up. [Structure] A wire rod 6 wound around a material supply drum 2 is rewound by driving an inverter-controlled motor 3, and the wire rod 6 is accommodated in a winding drum 14 via a dancer roll 9 in a winding pail pack 19. In the wire rod pail winding device configured as described above, a tachogenerator 27 is provided on the rotary shaft 29 of the winding drum 14, and the winding speed detected by the tachogenerator 27 is set to a target value of the rewinding speed of the material feeding drum 2. At the same time, the rewinding speed is corrected by using the movement of the dancer roll 9 as an element.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pail winding device for a wire, such as a welding wire wound around a drum, which is rewound from the drum and stored in a pail pack.

[0002]

2. Description of the Related Art As is well known, a pail take-up device is a device for accommodating a wire material such as a welding wire into a cylindrical pail pack so that it can be easily pulled out, and its outline is shown in FIG. In the figure, reference numeral 1 denotes a material supply device in which a material supply drum 2 around which a wire is wound is supported by a bearing 4 so as to be rewound and rotated by an inverter-controlled motor 3, and a material supply device 5 is unwound from the material supply drum 2. In order to apply a constant tension to the wire rod 6 to be applied, the tension device 10 that winds the wire rod 6 around the guide rolls 7 and 8 and the dancer roll 9 has the wire rod 6 pulled out from the tension device and the guide rolls 11 and 12. The straightening device 10 is composed of a plurality of straightening rolls that alternately sandwich the wire rod 6 from both sides. ing.

Reference numeral 13 is a winding drum 14 and its auxiliary drum 1
5 is a winding device, and 16a to 16d are pinch rolls for pressing the wire 6 onto the outer circumference of the winding drum 14,
Reference numeral 7 is an inverter-controlled motor for rotating the auxiliary drum 15 and the winding drum 14, and 18 is a horizontal plane synchronized with the winding drum 14 in order to give a certain twist to the wire 6 wound by the winding drum 14. A guide cylinder 19 is rotatably supported therein, and 19 is a pail pack.

FIG. 3 shows a conventional control system in the above-mentioned pail winding device. In FIG. 3, 20 is an inverter control device for controlling the rotation of the motor 3, 21 is a deviation of the dancer roll 9 from the reference position, and it is detected. A sensor for feeding back an operation amount proportional to the deviation to the inverter control device, 2
Reference numeral 2 is an inverter control device for controlling the rotation of the motor 17, and 23 is a speed setting variable resistor for issuing a speed command to the inverter control device 22 via a ramp circuit (for increasing or decreasing the rotation speed over time) 24. 25 is a voltage sensor for displaying the speed command value output from the lamp circuit 24, and 26 is a switch for instructing the inverter controller 20 of this speed command.

[0005]

In such a pail winding device, since the inertia of the winding drum 14, the auxiliary drum 15, the guide cylinder 18, etc. is large, a speed increasing command is issued from the ramp circuit 24 when starting the operation. Even if it comes, the actual number of revolutions does not easily increase. Therefore, the voltage sensor 2 is conventionally used.
When the pointer of No. 5 is monitored and the rotation of the take-up drum 14 is expected to rise appropriately, the switch 26 is turned on to issue a speed command to the inverter control device 20 to rotate the feed drum 2.

However, since the load torque of the motor 17 changes depending on the wire 6 and machine conditions and the starting characteristics are not stable, the winding speed and the feeding speed do not match and the wire 6 cannot be transferred normally in the above command. However, there was a problem that the operator had to operate while adjusting the variable resistor 23.

[0007]

DISCLOSURE OF THE INVENTION The present invention is intended to solve the above problems, and rewinds a wire wound around a feed drum by driving an inverter-controlled motor, and the wire is passed through a dancer roll. In a pail winding device for a wire rod adapted to be stored in a take-up drum in a take-up pail pack, a tachogenerator is provided on a rotary shaft of the take-up drum, and a take-up speed detected by the tachogenerator is taken up by the take-up drum. The rewinding speed is set to a target value, and the rewinding speed is corrected using the movement of the dancer roll as an element.

[0008]

Operation: The actual rotation speed of the winding drum, that is, the winding speed of the wire rod is set as the target value of the rewinding speed of the feeding drum, and the rewinding speed is corrected by the movement of the dancer roll. It can be started without any operation.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a wire rod pail winding device according to the present invention will now be described with reference to FIG. FIG. 1 shows a control system of a pail winding device according to the present invention. In FIG.
The same reference numerals denote the same functional parts.

In the present invention, a tachogenerator (generator) 27 is provided on the rotary shaft 29 of the winding drum 14, and the winding drum 1
A voltage proportional to the rotation speed of 4, that is, the winding speed is obtained from the tachogenerator 27, and the winding speed signal is input to the inverter control device 20 via the amplifier 28.
The winding speed is set to a target value of the rewinding speed of the material supply drum 2. Then, the sensor 21 provided on the dancer roll 9 detects the vertical shift of the dancer roll 9 with respect to the reference position, and feeds back the proportional element and the integral element to the inverter control device 20 as manipulated variables.

Note that the rotation speed command of the winding drum 14 is issued from the speed setting variable resistor 23 and the lamp circuit 24 in FIG. 1 to the inverter control device 22, as in FIG.

In this apparatus, when the operation is started, the tip of the wire 6 wound around the material supplying drum 2 is preliminarily provided with a dancer roll 9, a straightening device 10, a winding drum 14, and an auxiliary drum 1.
5. If it is hung down in the pail pack 19 through the guide tube 18 and the speed setting variable resistor 23 is appropriately set, a rotation speed command is issued from the lamp circuit 24 to the inverter control device 22 and the winding drum 14 is supplied. Can be gradually increased, and the rotation speed is detected by the tachogenerator 27. Since the feeding drum 2 uses the detected speed as a target value, the wire 6 can be rewound at the winding speed of the winding drum 14 as the winding drum 14 rotates.

[0013]

As described above, in the wire rod pail winding device of the present invention, the rewinding speed of the feeding drum and the winding speed of the winding drum are always matched so that the wire can be stably transferred and stored in the pail pack. There is a beneficial effect that can be made.

[Brief description of drawings]

FIG. 1 is a block diagram of a control system showing an embodiment of a wire pail winding device according to the present invention.

FIG. 2 is a layout diagram showing an outline of a pail winding device.

FIG. 3 is a block diagram of a control system of a conventional pail winding device.

[Explanation of symbols]

 1 Feeding Device 2 Feeding Drum 3 Motor 5 Tensioning Device 6 Wire Rod 9 Dancer Roll 14 Winding Drum 17 Motor 19 Pale Pack 20 Inverter Controller 21 Sensor 22 Inverter Controller 23 Speed Setting Variable Resistor 24 Lamp Circuit 27 Tachogenerator 28 Amplifier 29 rotation axis

Claims (1)

[Claims] 1. A wire rod wound around a feed drum is rewound by driving an inverter-controlled motor, and the wire rod is wound around a take-up drum via a dancer roll and stored in a pail pack. In the pail winding device, a tachogenerator is provided on the rotary shaft of the winding drum, and the winding speed detected by the tachogenerator is set as a target value of the rewinding speed of the material feeding drum, and the movement of the dancer roll is used as an element. A pail winding device for a wire rod, characterized in that the rewinding speed is corrected.