JP2007255935A - Thickness measuring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thickness measuring device, capable of easily transporting to the measurement site and easily and correctly measuring the thickness of a plat body. <P>SOLUTION: The device body 2 comprises a base 4 on which a slit 4a is provided and capable of inserting the flat body to be measured; and a pair of displacement sensors 5 opposite to each other for measuring the plate thickness provided on the base 4. The thickness measuring device is constituted of the device body 2 and the control part for operating, based on the output of each displacement sensor for each thickness measurement displacement sensor 5, and displays the calculated results. The displacement sensor for each plate thickness measuring sensor 5 is freely slidable in a direction perpendicular to the plate body inserted to the slit 4a of the base 4, and is provided with contact pieces 52 energized so as to be in contact mutually with the slit 4a of the base 4. When the plate body is inserted into the slit 4a, the pair of contact pieces 52 of the displacement sensors 5 for plate thickness measurement are mutually slid in a direction of separating each other, and the sum of displacement amount is calculated and displayed as the thickness of the plate body. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a measuring apparatus for measuring the thickness of a plate such as a metal plate.

  Conventionally, a steel sheet wound in a coil shape is attached to an uncoiler, and the uncoiler is driven to rotate to feed out the steel sheet, cut into a plurality of narrow strips by a slitter, and the strip material is wound into a coil shape by the recoiler. (For example, refer to Patent Documents 1 and 2).

  As described above, when the steel sheet is cut into a narrow strip and wound up, the thickness of the steel sheet is slightly different at the center and the end in the width direction. For this reason, when winding the cut strip with a recoiler, the thick strip has a larger diameter as compared with the thin strip. Accordingly, a difference occurs in the circumferential length corresponding to the rotation angle of the recoiler, that is, the winding length, the winding amount of the relatively thin plate material is reduced, and slack is gradually generated. In consideration of such slack of the thin strip, pits are formed in advance, and the slack in which the slack has occurred is absorbed by the pits.

This slack can be calculated by measuring the thickness of the strip, and is usually measured by an operator using a caliper or a micrometer.
JP-A-7-299643 Japanese Patent Laid-Open No. 10-100016

  However, when measuring the thickness of a steel sheet using a caliper or a micrometer, the measured value varies depending on the skill level of the operator, and is not stable. In this case, if there is an error in the measured value, a slack more than the set amount may occur, and in this case, the strip material comes into contact with the floor surface of the pit and the quality is impaired.

  Also, in line work etc., there is a demand to quickly measure the thickness of a plate such as a metal plate to shorten the work time required for measurement, but in order to measure the thickness of the plate using a caliper or a micrometer Requires a certain amount of work time, and it is difficult to meet the demand for time reduction.

  Although it has been proposed to measure the thickness of the plate using ultrasonic waves, the equipment costs are high, and it cannot be carried and measured at any work site, resulting in poor usability. is there.

  The present invention has been made in view of such problems, and provides a thickness measuring device that can be easily carried to a measurement work site and that can easily and accurately measure the thickness of a plate. .

  The present invention relates to an apparatus main body comprising a base in which a slit into which a plate to be measured can be inserted is formed, and a pair of opposing plate thickness measuring displacement sensors provided on the base, and each plate thickness measuring displacement sensor. A control unit that calculates based on the output and displays the calculation result, and each of the plate thickness measurement displacement sensors slides in a direction perpendicular to the front and back surfaces of the plate inserted in the slit of the base. It is free and has contacts that are biased to contact each other in the slit of the base, and when the plate is inserted into the slit, the contacts of the pair of plate thickness measurement displacement sensors are mutually connected. The sum of the displacement amounts slid in the separating direction is calculated and displayed as the plate thickness of the plate.

  According to the present invention, a plate to be measured is inserted into the slit of the apparatus main body, and the contacts of the pair of plate thickness measurement displacement sensors are slid in a direction away from each other against the biasing force. . The displacement amount associated with the sliding of the contact of each plate thickness measurement displacement sensor is output to the control unit, and the control unit calculates the sum of the displacement amounts and displays the calculation result as the plate thickness. .

  As a result, the operator can measure the thickness of the plate by a simple operation of simply inserting the plate into the slit of the apparatus main body, and the working time required for the measurement can be greatly shortened. Moreover, since the contact of the displacement sensor for measuring the plate thickness only needs to slide by a stroke substantially corresponding to the thickness of the plate, it can be formed in a compact size and includes a control unit for displaying the measurement result. However, it can be easily carried to the site, and measurement work can be performed at any work site.

  In the present invention, when a plurality of balls that press and urge one side of the front and back sides of the plate inserted in the slit protrude into the slit, the other side of the front and back sides of the plate Can be pressed through a plurality of balls so as to be in close contact with one surface of the slit, and the plate body can be prevented from being lifted from one surface of the slit, thereby suppressing the occurrence of measurement error as much as possible.

  In the present invention, an edge height measurement displacement sensor is attached to the base, and the edge height measurement displacement sensor is slidable in a direction perpendicular to the front and back surfaces of the plate inserted in the slit. The contactor is slidable in a direction perpendicular to the front and back surfaces of the plate inserted in the slit and urged in a direction of pressing the front and back sides of the plate inserted in the slit. Is opposed to the contact surface with the end face of the plate formed in the inner part of the slit, and the output of the displacement sensor for measuring the edge height is input to the control unit, and the plate is placed in the slit. When the end face is inserted into contact with the contact surface, the sliding member is pushed so that the contact of the displacement sensor for measuring the edge height contacts the edge of the plate, and the reference height of the standard piece is set. Calculate the difference from the displacement amount of the displacement sensor for edge height measurement, It is preferable to display as the edge height of the body.

  According to the present invention, the standard piece is inserted into the slit of the apparatus main body, the end surface of the standard piece is brought into contact with the contact surface, and then the sliding member is pushed to contact the edge height measuring displacement sensor. The child is brought into contact with the surface of the standard piece. When the contact comes into contact with the surface of the standard piece, the surface is output to the control unit as the reference height. Here, the thickness of the standard piece is set in advance. Next, the standard piece is taken out, the plate body to be measured is inserted into the slit of the main body of the apparatus, the end surface of the plate body is brought into contact with the contact surface, and similarly, the sliding member is pushed to move the edge. The contact of the displacement sensor for height measurement is brought into contact with the edge of the plate. When the contact comes into contact with the edge of the plate, the displacement of the contact of the edge height measuring displacement sensor due to sliding from the reference height is output to the control unit. Then, in the control unit, the difference between the reference height of the standard piece and the displacement amount of the displacement sensor is calculated, and the calculation result is displayed as the edge height of the plate.

  Therefore, the operator can insert the plate body into the slit of the apparatus main body, bring the end surface into contact with the contact surface, and then push the sliding member to push the edge height of the plate body. Can be measured, and the working time required for the measurement can be greatly reduced. Further, since the edge height measuring displacement sensor only needs to slide by a stroke substantially corresponding to the thickness of the plate, even if the edge height measuring displacement sensor is provided, the portability is not impaired.

  In addition, by measuring the edge height of the plate body, it is possible to grasp the wear of the blade that cuts the plate body.

  In the present invention, when the notch recess into which the end surface side tip of the plate body can be inserted is formed on the contact surface, the end surface side tip portion of the plate body is formed so as to protrude. However, it becomes possible to guide the edge so that the edge is positioned below the contact of the displacement sensor for measuring the edge height, and the edge height of the plate can be accurately measured.

  According to the present invention, the thickness of the plate can be easily and accurately measured while being easily carried to the measurement work site.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows an embodiment of a thickness measuring apparatus 1 according to the present invention.

  The thickness measuring apparatus 1 includes an apparatus main body 2 that measures the thickness of the plate body P and its edge height, and a controller 3 that calculates and displays measurement data obtained by the apparatus main body 2.

  As shown in detail in FIG. 2, the apparatus main body 2 is configured by providing a pair of plate thickness measurement displacement sensors 5 on the base 4 so as to face each other and providing an edge height measurement displacement sensor 6. Of these, each plate thickness measuring displacement sensor 5 includes a holder 51 fixed to the base 4 and a contact 52 slidably inserted into the holder 51. The contact 52 is not shown. The spring is biased in a direction protruding from the holder 51. The displacement amount of the contact 52 with respect to the holder 51 is converted into an electric signal and output to the control unit 3 via the cable 9. In this case, the distal end surface of the contact 52 of each plate thickness measurement displacement sensor 5 is formed in a curved surface shape such as a spherical surface so that it can slide smoothly when the plate body P is inserted, as will be described later.

  The edge height measuring displacement sensor 6 includes a sliding member 61 slidably provided on the base 4 in a vertical direction, a holder 62 fixed to the sliding member 61, and a slidable member on the holder 62. The contact 63 is urged in a direction protruding from the holder 62 by a spring (not shown). The displacement amount of the contact 63 with respect to the holder 62 is also converted into an electrical signal and output to the control unit 3 via the cable 9.

  By the way, a slit 4a into which the plate P to be measured can be inserted is formed in a horizontal direction over a certain length in a substantially middle portion of the base 4 in the height direction. The contacts 52 are arranged in the slit 4a and are urged so as to contact each other. That is, the contact 52 of each plate thickness measurement displacement sensor 5 is slidable in a direction perpendicular to the front and back surfaces of the plate body P inserted into the slit 4a with respect to the holder 51, and within the slit 4a. Energized to contact. Further, the contact 63 of the displacement sensor 6 for measuring the edge height is arranged facing the contact surface 4b with the end surface of the plate body P formed in the inner back portion of the slit 4a. That is, the contact 63 of the edge height measuring displacement sensor 6 is slidable in a direction perpendicular to the front and back surfaces of the plate body P inserted into the slit 4 a with respect to the holder 62. And is urged to contact the back surface.

  The base 4 is provided with a plurality of ball plungers 7. The ball plunger 7 includes a ball 71 protruding into the slit 4a and a spring 72 that presses the ball 71 toward the bottom surface of the slit 4a. The ball plunger 7 presses the surface of the plate body P inserted into the slit 4a. The back surface is urged so as to be in close contact with the bottom surface of the slit 4a. In this case, it is preferable to provide the balls 71 of the ball plunger 7 so as to be positioned at equal intervals around the contact 52 of the plate thickness measuring displacement sensor 5 when viewed from above.

  The contact surface 4b of the slit 4a is formed with an arc-shaped cutout recess 4x (see FIG. 3) so as to face the contact 63 of the edge height measuring displacement sensor 6, and the plate P Even if it is formed so that the front end portion of the plate body P protrudes, the front end portion of the plate body P is accommodated in the notch recess 4x, that is, the edge of the plate body P is measured as an edge height measuring displacement sensor. 6 can be led directly under the contact 63.

  Further, the sliding member 61 of the edge height measuring displacement sensor 6 is urged by a spring (not shown) in a direction away from the front and back surfaces of the plate body P inserted into the slit 4a.

  Further, a cover 8 is provided on the apparatus main body 2 so as to cover the plate thickness measurement displacement sensor 5 and the edge height measurement displacement sensor 6. In this case, an opening 8a is formed in the cover 8 so as to face the sliding member 61 of the edge height measuring displacement sensor 6, and the sliding member 61 is pushed against the biasing force through the opening 8a. be able to.

  On the other hand, the control unit 3 is provided with various switches 31 such as a display mode changeover switch, a measurement data storage switch, a measurement data and storage data clear switch, and a display unit 32 for displaying the calculation result. As will be described later, when the output from the two plate thickness measurement displacement sensors 5 and the output from the single edge height measurement displacement sensor 6 are input through the cable 9, according to a preset program. The calculation is performed and the calculation result is displayed on the display unit 32.

  Here, the apparatus main body 3 is formed to have a width of 40 mm, a height of 80 mm, and a depth of 80 mm, and the slit 4a is set to a height of 2 mm so that the plate material P up to a plate thickness of 1.2 mm can be measured. The edge height is set so that an edge height of 0.35 mm to 1.35 mm can be measured.

  The control unit 3 is formed with a width of 100 mm, a height of 44 mm, and a depth of 180 mm, is powered by a dry cell, and has a resolution of 1.0 μm.

  Next, the point which measures the thickness of the board P using the thickness measuring apparatus 1 comprised in this way is demonstrated.

  In order to measure the thickness, the measuring device 1 may be brought into the site where the thickness is to be measured, and the plate P to be measured may be inserted into the slit 4a of the base 4 in the device main body 2. When the plate body P is inserted into the slit 4a of the base 4, as shown in FIG. 4, the plate body P pushes up the balls 71 of the plurality of ball plungers 7 against the biasing force of the spring 72, while The contactor 52 of the plate thickness measuring displacement sensor 5 is pushed up against the biasing force, and the lower contactor 52 of the plate thickness measuring displacement sensor 5 is pushed down against the biasing force. The amount of displacement associated with the contact 52 of the pair of plate thickness measuring displacement sensors 5 sliding in the direction away from the holder 51 is output to the control unit 3 via the cable 9 as outputs Δe1 and Δe2. Is input.

  At this time, the plate body P is pressed so as to be in close contact with the bottom surface of the slit 4a by the urging force of the compressed spring 72 of the ball plunger 7, and the floating of the plate body P is prevented. Therefore, when the thickness of the plate P is measured, the contact 52 does not slide carelessly, and the thickness can be accurately measured.

  When outputs Δe1 and Δe2 which are displacement amounts of the contacts 52 of the pair of plate thickness measuring displacement sensors 5 are input to the control unit 3, the control unit 3 outputs Δe1 and Δe2 regarding the displacement amounts of the respective contacts 52. And the numerical value corresponding to the sum (Δe1 + Δe2), that is, the thickness of the plate P is displayed on the display unit 32.

  Therefore, the thickness measurement of the plate body P can be performed by a simple operation in which the operator simply inserts the plate body P into the slit 4a of the apparatus main body 2, and the work time required for the measurement can be greatly shortened. it can. Moreover, since the whole apparatus is formed in a compact size, it can be brought into the field and measured.

  On the other hand, when measuring the edge height of the plate body P, a standard piece (not shown) whose thickness is grasped in advance is inserted into the slit 4a of the base 4 in the apparatus main body 2 and the end surface thereof is contacted with the contact surface 4b. Abut. At this time, as described above, the plate body P is prevented from being lifted by the elastic force of the spring 72 by pushing up the balls 71 of the plurality of ball plungers 7 against the urging force of the spring 72.

  The contact 52 of the pair of plate thickness measurement displacement sensors 5 slides away from each other by the insertion of the plate P into the slit 4a, but the data on the amount of displacement is also displayed at the same time.

  When the end surface of the standard piece comes into contact with the contact surface 4b of the slit 4a, the sliding member 61 of the edge height measuring displacement sensor 6 is resisted against the biasing force, specifically, the sliding member 61. When the lower surface of the base member 4 is pushed down until it contacts the upper surface of the base 4, the contact 63 comes into contact with the upper surface of the standard piece. Then, when the contact 63 of the edge height measuring displacement sensor 6 comes into contact with the upper surface of the standard piece, the output Δe is input to the controller 3 via the cable 9 as a reference height.

  If the standard height by the standard piece is obtained, the standard piece is taken out from the slit 4a, and then the plate P to be measured is inserted into the slit 4a and its end face is brought into contact with the contact surface 4b of the slit 4a ( (See FIG. 5 (a)). Next, as in the case of the standard piece, when the sliding member 61 of the edge height measuring displacement sensor 6 is pushed down against its urging force until its lower surface comes into contact with the upper surface of the base 4, the contactor 63 is moved. It contacts the edge of the plate body P. The displacement amount associated with the sliding of the contactor 63 from the reference height when the contactor 63 of the edge height measuring displacement sensor 6 comes into contact with the upper surface of the standard piece is output Δe3 through the cable 9 and the control unit 3. (See FIG. 5B).

  When an output Δe3, which is a displacement amount of the contact 63 of the edge height measuring displacement sensor 6, is input to the control unit 3, the control unit 3 determines an amount of displacement of the contact 63 from the output Δe for the reference height. The output Δe3 is subtracted, and a numerical value corresponding to the difference (Δe−Δe3), that is, the edge height of the plate P is displayed on the display unit 32.

  At this time, even if the front end of the plate P to be measured is formed in a shape protruding toward the front, the front end of the plate P is formed into the notch recess 4x of the contact surface 4b. Can be accommodated. For this reason, the edge of the plate P to be measured can be guided directly below the contactor 63, and the height of the edge of the plate P, that is, the edge height can be accurately measured.

  Therefore, the edge height of the plate body P is measured by the operator inserting the plate body P into the slit 4a of the apparatus main body 2 and bringing its end surface into contact with the contact surface 4b. Therefore, the operation time required for measurement can be greatly shortened. Moreover, since the whole apparatus is formed in a compact size, it can be brought into the field and measured.

  In the above-described embodiment, the thickness measuring device 1 that can measure the edge height together with the thickness of the plate P by providing the edge height measuring displacement sensor 6 together with the plate thickness measuring displacement sensor 5 is exemplified. However, when it is not always necessary to measure the edge height of the plate P, the edge height measuring displacement sensor 6 need not be provided.

  Moreover, although the case where the slit 4a was formed in the horizontal direction of the base 4 was illustrated, you may form a slit in a perpendicular direction. In this case, the pair of plate thickness measuring displacement sensors 5 are arranged to face each other in the left-right direction, and the contact 52 slides in the left-right direction.

  As described above, according to the present invention, the thickness of the plate body can be easily and accurately measured while being easily carried to the measurement work site. Can be greatly improved.

It is a perspective view which shows one Embodiment of the thickness measuring apparatus of this invention. It is a longitudinal cross-sectional view explaining the apparatus main body part which comprises the thickness measuring apparatus of FIG. It is the sectional view on the AA line of FIG. It is explanatory drawing which shows typically the measurement procedure of the thickness of the plate body by the thickness measuring apparatus of this invention. It is explanatory drawing which shows typically the measuring procedure of the edge height of the plate body by the thickness measuring apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Thickness measuring apparatus 2 Apparatus main-body part 3 Control part 4 Base 4a Slit 4b Contact surface 4x Notch recessed part 5 Displacement sensor for board thickness measurement 52 Contactor 6 Displacement sensor for edge height measurement 63 Contactor 7 Ball plunger

Claims (4)

  Based on the base body in which a slit into which a plate to be measured is inserted is formed, a device main body portion including a pair of opposing thickness measuring displacement sensors provided on the base, and the output of each thickness measuring displacement sensor Each of the plate thickness measurement displacement sensors is slidable in directions orthogonal to the front and back surfaces of the plate inserted in the slit of the base, respectively. And a contact member biased so as to come into contact with each other in the slit of the base, and when the plate body is inserted into the slit, the contact members of the pair of thickness measuring displacement sensors slide in a direction away from each other. A thickness measuring apparatus that calculates a sum of displacements that are moved and displays the sum as a plate thickness of the plate.   2. The thickness measuring apparatus according to claim 1, wherein a plurality of balls for pressing and energizing one surface of the front and back surfaces of the plate inserted in the slit protrude from the base.   An edge height measuring displacement sensor is attached to the base, and the edge height measuring displacement sensor is provided on a sliding member that is slidable in a direction perpendicular to the front and back surfaces of the plate inserted in the slit. The contact that is slidable in the direction orthogonal to the front and back surfaces of the plate inserted in the slit and that is urged in the direction of pressing the entire surface of the plate inserted in the slit is inserted into the slit. It is opposed to the contact surface with the plate end face formed in the back, and the output of the edge height measurement displacement sensor is input to the control unit, and the plate is inserted into the slit, When the end surface comes into contact with the contact surface, the sliding member is pushed to bring the edge sensor of the displacement sensor for edge height measurement into contact with the edge of the plate, and the reference height and edge height of the standard piece are measured. Calculate the difference from the displacement amount of the displacement sensor for the plate, and the edge height of the plate Thickness measuring apparatus according to claim 1 or 2 wherein, characterized in that to display.   The thickness measuring device according to claim 3, wherein a notch recess into which the end surface side tip of the plate body can be inserted is formed on the contact surface.

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