KR100241021B1 - Non-contact type surface measuring apparatus of conductor roll - Google Patents

Abstract

The present invention relates to an apparatus for non-contact measurement of the shape of a conductor roll surface in electroplating on a strip-type iron plate, comprising: a measuring optical sensor for measuring the surface of the roll; A reference optical sensor for vibration compensation and noise compensation of the optical sensor for measurement, an air nozzle for removing the plating liquid at the measurement surface position of the two optical sensors, and a movable plate on which the optical sensor for measurement is mounted The AC servo motor is driven by the N-belt method, the configuration is simplified and the cost is reduced, and the plating liquid on the roll surface is removed with the air nozzle, thereby minimizing the error in measuring the surface shape by the optical sensor. .

Description

Non-contact energizing roll surface measuring device in electroplating line

1 is a conceptual diagram of a non-contact energizing roll surface measuring apparatus according to the present invention.

2 is a conceptual diagram of a conventional roll roll surface measuring apparatus.

3 is a block diagram showing data processing for an optical sensor in the present invention.

4 is a configuration diagram of the optical sensor and the air nozzle in the present invention.

* Explanation of symbols for main parts of the drawings

1a, 1b: optical sensor 2: linear guide

3: AC servo motor 4, 5: amplifier

6: Comparator 7: Analog / Digital Converter

8: Central Processing Unit (CPU) 9: Digital / Analog Converter

10: computer

11: timing pully and belt

13: reference plate 14: movable plate for measurement

15: air nozzle 30: case

31: air stream 32: plating solution on the roll surface

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a non-contact electricity roll surface measuring apparatus in an electroplating line for non-contact measuring the shape of a surface of a conductor roll in electroplating on a strip type iron plate.

In the conventional apparatus for measuring the surface shape of a current-carrying roll, three water jets for vibration compensation, as shown in the documents CAMP-ISIJ Vol. 4 (1991) and P1382, presented by Japan's Chuu Metal shown in FIG. water jet) ultrasonic rangefinder was used.

FIG. 2 is a conceptual view showing the structure of a conventional roll-bearing surface measuring apparatus, which uses three water jet ultrasonic rangefinders 20 and sets the position and angle of the three sensors. 21) and the sensor head 21 was mounted on a side rail 22 driven in a parallel direction along the surface of the current carrying roll 12 to measure the surface shape of the current carrying roll.

However, conventionally, by using three sensors, there is a structural complexity, and there is a problem that requires accurate angle correction and position selection between the sensors in the initial device configuration, and also theoretically measures the shape from three positions. Therefore, it is based on the assumption that the energizing roll is a circle (pure circle), and the water jet type ultrasonic range finder has a problem in that it has a limit value of about several tens of micrometers to about 100 micrometers.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its object is to provide two non-contact optical sensors, simplifying the configuration, and removing the vibration compensation and noise components, as well as the non-contact type in the electroplating line which can obtain high resolution. The present invention provides a surface roll measuring device.

As a technical means for achieving the above object, the present invention is a non-contact current rolling roll surface measuring apparatus in an electroplating line, fixed to a reference plate and a movable plate connected to a linear guide installed parallel to the current rolling roll Two optical sensors, an air nozzle for removing a plating solution from the measurement surfaces of the two optical sensors, an AC servo motor for driving a movable plate to which the optical sensors are fixed, and a signal applied from the two optical sensors And a computer for outputting a signal applied from the signal processing apparatus so that an operator can know and outputting a signal for controlling the driving of the servomotor according to the operator's instruction.

It will be described below with reference to the accompanying drawings.

1 is a conceptual view of the non-contact electricity supply roll surface measuring apparatus according to the present invention, which is provided in parallel with the optical sensors 1a and 1b for measuring the surface state of the electricity supply roll 12, and the electricity supply roll 12 as a measurement target. The linear guide 2 on which the optical sensors 1a and 1b are installed by the reference plate 13 and the movable plate 14 and the movable plate on which the optical sensor 1b is fixed ( AC servo motor 3 for precise position control of 14) and a timing pulley & belt 11 driven by the AC servo motor 3 to drive the movable plate 14 at high speed. And, the reference plate 13 and the movable plate 14 are respectively installed at a predetermined angle with the optical sensors (1a, 1b) to remove the plating solution from the surface during the surface measurement of the conduction roll 12 of the optical sensors (1a, 1b) An air nozzle 15 is provided.

The optical sensors 1a and 1b are sensors for measuring distance using light. For example, the optical sensors 1a and 1b measure a distance of a measurement target based on an angle at which a laser emitted at a predetermined angle is reflected back through the measurement target. A laser triangulation distance sensor, or a laser time difference distance sensor for measuring the distance of the measurement target based on a time difference that is reflected by the laser beam being reflected back through the measurement target, and the like may be used in the embodiment of the present invention. Distance sensor.

3 is a block diagram showing the processing of data output from the optical sensors 1a and 1b according to the present invention. Amplifiers 4 and 5 respectively amplifying the signals output from the optical sensors 1a and 1b, respectively. ), A comparator 6 for comparing the signals output from the two amplifiers 4 and 5, an analog / digital converter 7 for converting the analog signal output from the comparator 6 into a digital signal, A CPU 8 for filtering and signal processing a digital signal output from the analog / digital converter 7, a digital / analog converter 9 for converting a signal output from the CPU 8 into an analog signal, And a computer 10 for controlling the drive of the AC servomotor 3 by a signal output from the digital / analog converter 9, and the communication between the computer 10 and the AC servomotor 3 is RS232C. By the way.

FIG. 4 is a conceptual diagram for explaining an operation of associating the optical sensor 1a, 1b with the air nozzle 15 of FIG.

The operation and effects of the present invention will be described in detail.

In FIG. 1, a measuring optical sensor 1b fixed to the movable plate 14 of two optical sensors 1a and 1b, which is composed of a laser triangular distance sensor, is used to control the position of the AC servomotor 3. As a result, the surface of the energization roll 12 is moved. In the present invention, the precision of the AC servo motor (3) has a resolution of about 10㎛ in the PTP (point to point) method, and in the high-speed measurement of the roll surface having a measuring range of about 2m, corrosion due to long time use And a timing pully and belt method without mechanical problems (eg, backlash) to drive the movable plate 14.

As described above, the reference signal and the measurement signal from the fixed reference optical sensor 1a and the measuring optical sensor 1b fixed to the movable plate 14 are transferred to the amplifiers 4 and 5, respectively. After being input and amplified, it is input to the comparator 6. The comparator 6 is output from the reference signal Vref output from the reference optical sensor 1a and the measurement optical sensor 1b fixed to the movable plate 14 to measure the surface of the energizing roll 12. The measurement signal Vmeasure is input to output the output signal Vout shown in the following equation.

V _out = V _ref -V _measure ... … … (One)

The output signal (Vout) is a signal to reduce the noise component generated during the measurement and vibration compensation, the signal is converted into a digital signal by the analog / digital converter (7) to the central processing unit (CPU) (8) Is entered. The central processing unit (CPU) 8 performs filtering and signal processing on the input digital signal, and the signal output from the central processing unit (CPU) 8 is converted into an analog signal by the digital / analog converter 9. It is converted and output to the computer 10 which is several meters or more away. The computer 10 notifies the operator of the surface measurement result of the energization roll input through the digital / analog converter 9, or outputs a control signal for controlling the AC servomotor 3 according to the operator's instruction.

When the surface is measured by the reference optical sensor 1a or the measuring optical sensor 1b, the plating liquid 32 is conventionally covered on the surface of the conduction roll 12 to be measured. An error occurred in measurement by reflection of light caused by the light. In the present invention, the air nozzle 15 also operates in the operation of the optical sensor 1a as shown in FIG. Stream 31 exits and removes the plating liquid 32 from the surface. As a result, the optical sensor 1a measures the surface state without errors due to reflection of the plating liquid. The heat of air comes out as described above by another optical sensor 1b and the air nozzle 15 provided on the movable plate 14 at the same angle with the optical sensor 1b, thereby removing the plating liquid on the roll surface.

As such, the present invention is provided with two optical sensors for measuring the surface of the current roll, it is possible to remove the vibration compensation and noise components, and to simplify the configuration to reduce the cost, the actual surface of the current roll By non-contact observation, the life of the sensor can be extended, and the state of the plate to be plated can be predicted in advance, and the plating solution on the roll surface can be removed using the air nozzle to reduce the error component of the measurement. will be.

Claims (4)

In the non-contact energizing roll surface measuring apparatus in the electroplating line, the optical sensor is fixed to the reference plate 13 and the movable plate 14 respectively connected to the linear guide 2 installed in parallel to the energizing roll 12 (1a, 1b); An air nozzle 15 for removing the plating liquid 32 from the measurement surfaces of the optical sensors 1a and 1b; An AC servo motor (3) for driving the movable plate (14) to which the one optical sensor is fixed; A signal processing device for processing signals applied from the two optical sensors (1a, 1b); A computer (10) for outputting a signal applied from the signal processing apparatus so that an operator can know, and outputting a signal for controlling driving of the servomotor (3) according to the operator's instruction; Non-contact energizing roll surface measurement apparatus in the electroplating line characterized in that it comprises a. The signal processing apparatus of claim 1, further comprising: two amplifiers (4, 5) for amplifying signals applied from the two optical sensors (1a, 1b), respectively; A comparator (6) for comparing two signals input from the two amplifiers (4, 5); An analog / digital converter 7 for converting the signal output from the comparator 6 into a digital signal; A central processing unit (8) for filtering and signal processing the digital signal output from the analog / digital converter (7); A digital / analog converter (9) for converting data output from the central processing unit (8) into an analog signal; Non-contact energizing roll surface measurement apparatus in the electroplating line characterized in that it comprises a. The optical sensor 1b of the two optical sensors, which is fixed to the movable plate 14, is a measuring optical sensor for measuring the surface of the energizing roll 12, and the reference plate 13 The non-contact energizing roll surface measuring apparatus of the electroplating line, characterized in that the fixed optical sensor (1a) is a reference optical sensor for vibration compensation and noise compensation of the measurement optical sensor (1b). The non-contact energizing roll surface in an electroplating line according to claim 1, wherein the driving method of the movable plate provided with the optical sensor by the AC servo motor is a timing pulley and belt method. Measuring device.