JPH023942B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a moisture content measuring device for paper liners used as insulation materials for batteries.

[Technical background of the invention and its problems] Paper liners are used as insulating materials for batteries, etc., and are made by applying a paste and then sending it to a drying room to dry. It is desirable that the paper liner after drying contains an appropriate amount of moisture, so it is necessary to measure the moisture content after drying and control the drying chamber temperature so that the moisture content is at an appropriate value.

Conventionally, such moisture content measurements of paper liners have been carried out by humans by pressing the sensor of a measuring device against the winding roll of the paper liner. However, this method had the disadvantage that the force with which the sensor was pressed against the paper liner varied from measurement to measurement, making accurate measurements impossible. Furthermore, in order to detect the moisture content of the paper liner, it is necessary to measure at several locations on the surface of the paper liner, but the above method has the disadvantage that the measurement position differs each time the measurement is made.

[Purpose of the invention]

This invention was made in order to eliminate such drawbacks, and it is possible to always keep the contact force of the moisture content sensor against the paper liner constant during measurement.
Another object of the present invention is to provide a paper liner moisture content measuring device that can always keep the measuring position relative to the paper liner constant and accurately measure the moisture content.

[Summary of the invention]

As shown in FIG. 1, this invention is provided with a moisture content sensor 1 that detects the moisture content of a paper liner using a contact method, and this moisture content sensor 1 is driven forward and backward with respect to the paper liner by an advance/retreat drive mechanism 2, and its movement is controlled. The movement of the moisture content sensor 1 is controlled by a mechanism 3, and the movement position of the moisture content sensor 1 whose movement is controlled by the movement control mechanism 3 is detected by position detection sensors 4-1,...4-n provided for each preset measurement position. , while driving the movement control mechanism 3 with the positioning control means 5, the position detection sensor 4-
1,...4-n outputs are input to position the moisture rate sensor 1, and then the moisture rate measuring means 6
Then, the forward and backward drive mechanism 2 is driven to bring the moisture content sensor 1 into contact with the paper liner and take in the sensor output.

[Embodiments of the invention]

In the figure, reference numeral 11 denotes a paper liner to which a paste has been applied and is wound up after drying, 12 a moisture content sensor provided movably forward and backward with respect to the surface of the paper liner 11, and 13 a moisture content sensor 12.
This is a forward/backward drive mechanism that has an air cylinder 14 that moves forward and backward. A contact detector 15 is attached to the moisture content sensor 12 to detect contact of the sensor 12 with the paper liner 11. Reference numeral 16 denotes a motor 17, a screw shaft 18 which is rotationally driven by the motor 17 and moves the forward/backward drive mechanism 13 from side to side in the figure, and a slide shaft 19 which is provided parallel to the screw shaft 18 and supports the forward/backward drive mechanism 13. , 20. Said slide shaft 2
Limit switches 21 and 22 for detecting the limit of movement of the advance/retreat drive mechanism 13 are attached to both ends of the drive mechanism 13. Position detection sensors 231 and 23 are installed at predetermined positions along the slide shaft 20 at the rear end of the forward/backward drive mechanism 13.
2,233,234,235 are provided. Each of the position detection sensors 231 to 235 is composed of, for example, a photo interrupter, and detects the movement position of the forward/backward drive mechanism 13 by detecting a billboard (not shown) attached to the rear end of the forward/backward drive mechanism 13. are doing. 24 is a solenoid valve that controls the air supply to the air cylinder 14 of the advance/retreat drive mechanism 13; 25 is a motor driver that controls the motor 17 of the movement control mechanism 16; 26 is a microcomputer that constitutes a positioning control means and a moisture content measuring means, and this microcomputer 26 is connected to the first
It controls the second multiplexer 28 and also controls the second multiplexer 30 via the buffer 29. The microcomputer 26 is a first
The first latch buffer 31 is selected by the multiplexer 28 of
A motor drive signal is supplied to the motor driver 25 via the motor driver 25, and the buffer 32 is selected by the second multiplexer 30, and the detection outputs from the contact detector 15, limit switches 21 and 22, and each position detection sensor 231 to 235 are sent to the motor drive signal. I'm trying to incorporate it. Of each of the position detection sensors 231 to 235, sensor 23
1 and 235 are spares for the sensors 232 and 234, respectively, and are used in place of the sensors 232 and 234 when they fail. The microcomputer 26 causes the motor driver 25 to rotate the motor 17 to control the movement of the advance/retreat drive mechanism 13, and controls each detection sensor 232 to 23.
4, the rotation of the motor 17 is stopped, and the moisture content sensor 12 is positioned relative to the paper liner 11. Further, when the positioning of the moisture content sensor 12 is completed, the microcomputer 26 selects the second latch buffer 33 by the first multiplexer 28, and connects the solid state relay via the second latch buffer 33. (hereinafter referred to as SSR) 34 and checks whether the detection output of the contact detector 15 is input via the buffer 32, and when the detection output is input, it is sent to the SSR 34. The output of the signal is controlled to stop. Next, the microcomputer 26 controls the A/D converter 35 by the second multiplexer 30.
is selected, and the detection output of the moisture content sensor 12 is taken in via the amplifier 36 and the A/D converter 35. The microcomputer 26 repeatedly takes in the detection output of the moisture content sensor 12 until it stabilizes, and this data is used, for example, in a drying oven based on the results obtained for all positions of the position detection sensors 232, 233, 234. Performs various controls such as temperature control and room temperature control. Furthermore, the microcomputer 26 detects the position detection sensors 231 and 2.
32 or 234 and 235 fail at the same time and the advance/retreat drive mechanism 13 goes out of control, the rotation of the motor 17 is controlled to stop based on the detection output of the limit switch 21 or 22.

In the apparatus of the present invention having such a configuration, first, the first and second multiplexers 28 and 30 are controlled by the microcomputer 26, and the first latch buffer 31 and buffer 32 are selected. In this state, the motor driver 25 is operated and the motor 17 is driven. And advance/retreat drive mechanism 1
3 is controlled so that the moisture content sensor 12 moves along the surface of the paper liner 11. The forward/backward drive mechanism 13 uses the position detection sensor 232 to
234, for example, the detection sensor 233, the microcomputer 26 receives the detection output and stops the motor driver 25 from driving the motor 17. Next, the microcomputer 26 selects the first multiplexer 2.
8 is controlled and the second latch buffer 33 is selected. In this state, the SSR 34 is driven, the solenoid valve 24 is opened, air is supplied to the air cylinder 14, and the moisture content sensor 12 is driven in the direction of contacting the surface of the paper liner 11. When the moisture content sensor 12 comes into contact with the paper liner 11, the contact detector 15 detects this, and the microcomputer 26 thereby stops driving the SSR 34 and closes the solenoid valve 24. Next, the second multiplexer 30 is controlled by the microcomputer 26 to start receiving the output of the A/D converter 35. The paper liner 11 is thus detected by the moisture content sensor 12.
The moisture detection signal is input to the microcomputer 26 via the A/D converter 35, the second multiplexer 30, and the buffer 29, and the moisture content is calculated. The microcomputer 26 holds this moisture content data in its memory, and after opening the solenoid valve 24 to remove the air from the air cylinder 14, starts moving the advance/retreat control mechanism 13 to the next position, that is, the position detection sensor 234. . In this way, each position detection sensor 23
When the moisture content measurement at three points 2, 233, and 234 is completed, the microcomputer 26 checks each measurement data and, if necessary, controls the temperature of the drying oven and the room temperature to correct the moisture content of the paper liner 11. do.

Since the contact of the moisture content sensor 12 with the paper liner 11 is automatically controlled using the air cylinder 14 and the contact detector 15 in this way, the contact force of the moisture content sensor 12 with the paper liner 11 is always kept constant. Moisture content can always be measured under the same conditions. The measurement position of the moisture content sensor 12 relative to the paper liner 11 is determined by a movement control mechanism 16 using a motor 17 and position detection sensors 231 to 231.
235, the measurement position relative to the paper liner 11 can always be kept constant.

In this way, the contact force of the moisture content sensor 12 with respect to the paper liner 11 can be kept constant, and the measurement position can be kept constant, making it possible to accurately measure the moisture content. Moreover, since the measurement is automated, the measurement work is extremely easy.

〔Effect of the invention〕

As described above, according to the present invention, in measuring the moisture content of a paper liner using a contact-type moisture content sensor, the contact force of the moisture content sensor to the paper liner can be kept constant, and the measurement position can be kept constant, making it possible to accurately measure the moisture content of a paper liner. Accordingly, it is possible to provide a paper liner moisture content measuring device that can perform accurate moisture content measurement.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of this invention, and FIG. 2 is a block diagram showing an embodiment of this invention. 1,11……paper liner, 2,13……
Forward/backward drive mechanism, 3, 16...Movement control mechanism, 4-
1 to 4-n, 231 to 235...position detection sensor, 5...positioning control means, 6...moisture content measuring means, 26...microcomputer.

Claims (1)

[Claims] 1. A paper liner to which a paste has been applied and has been dried, a moisture content sensor that detects the moisture content of this paper liner by contact, a movement drive mechanism that drives this moisture content sensor back and forth with respect to the surface of the paper liner, and the above-mentioned A movement control mechanism that controls the movement of the moisture content sensor along the paper liner surface, a position detection sensor that is provided for each preset measurement position and detects the movement position of the moisture content sensor, and the movement control mechanism. positioning control means for inputting the position detection sensor output while driving and positioning the moisture content sensor at a predetermined measurement position; A paper liner moisture content measuring device comprising moisture content measuring means for bringing the moisture content sensor into contact with the paper liner surface and taking in the output of the moisture content sensor.