TWI620914B - Measuring device - Google Patents

Abstract

According to an embodiment, the measuring device has a base, a pair of range finder and an auxiliary member. The base has a lower frame, an upper frame disposed opposite the lower frame, and a pillar connecting the lower frame and the upper frame. A pair of range finder are respectively disposed in the lower frame and the upper frame, and are arranged opposite to each other with a gap through which the measurement object can pass. The auxiliary member is formed on the base portion and is made of a material having a linear expansion coefficient different from that of the pillar, and the length of the pair of distance measuring devices in the opposing direction has heat with the pillars facing the foregoing The amount of expansion in which the pair of range finder is expanded in the opposite direction becomes the same amount of expansion.

Description

Measuring device

An embodiment of the present invention relates to a measuring device that measures the thickness of a measuring object by non-contact measurement.

A measuring device that passes a measurement object between a pair of range finder that is disposed oppositely in a frame-like frame is known. In this measuring apparatus, the thickness of the object is derived by subtracting the distance from each of the distance measuring instruments to be measured to the measuring object from the distance between the pair of distance measuring instruments measured in advance.

The frame used in the measuring device has an upper frame and a lower frame for fixing a pair of range finder, and a pillar for connecting the upper frame and the lower frame. The pillars are provided at one end or both ends of the upper and lower frames.

A conventional technique of the thickness measuring device is disclosed in Japanese Laid-Open Patent Publication No. 2014-174010.

The problem to be solved by the present invention is to provide a measuring device which can be measured with high precision even if the length of the strut is changed by heat. The thickness of the object.

According to an embodiment of the invention, the measuring device has a base, a pair of range finder and an auxiliary member. The base has a lower frame, an upper frame disposed opposite the lower frame, and a pillar connecting the lower frame and the upper frame. A pair of range finder are respectively disposed in the lower frame and the upper frame, and are arranged opposite to each other with a gap through which the measurement object can pass. The auxiliary member is formed of a material having a linear expansion coefficient different from the struts, and the length of the pair of distance measuring devices in the opposing direction has a heat toward the pillar The amount of expansion that expands in the opposite direction of the range finder becomes the same amount of expansion.

1A, 1B, 1C, 1D, 1E‧‧‧ measuring devices

11, 11A, 11B, 11D‧‧‧ base

12‧‧‧ Rangefinder

13, 13A, 13B, 13C‧‧‧ auxiliary components

14‧‧‧ calibration device

15‧‧‧Control Department

21‧‧‧ Lower frame

22, 22B‧‧ ‧ pillar

22a‧‧‧1st pillar

22b‧‧‧2nd pillar

23‧‧‧上上

31, 32‧‧‧ Fixed Department

99‧‧‧Signal line

100‧‧‧Measurement object

200‧‧‧Setting surface

[Fig. 1] is an explanatory view showing a configuration of a measuring device according to a first embodiment.

[Fig. 2] An explanatory view showing a configuration of a measuring apparatus according to a second embodiment.

[Fig. 3] An explanatory view showing a configuration of a measuring apparatus according to a third embodiment.

[Fig. 4] An explanatory view showing a configuration of a measuring apparatus according to a fourth embodiment.

[Fig. 5] An explanatory view showing a configuration of a measuring apparatus according to a fifth embodiment.

[Fig. 6] A view showing the configuration of the measuring device of the sixth embodiment Figure.

(First embodiment)

Hereinafter, the measurement device 1 of the first embodiment will be described using FIG.

Fig. 1 is an explanatory view showing the configuration of the measuring device 1 of the first embodiment.

The measuring device 1 includes a frame-shaped base portion 11 through which the measurement target 100 passes, a pair of distance measuring devices 12 disposed on the base portion 11 and opposed to each other, and a distance between the base portion 11 and one of the range finder 12 The auxiliary member 13 and the correction device 14 for measuring the distance between the gaps of the pair of distance meters 12 and the control unit 15 for transmitting the signal line 99 to the pair of distance measuring device 12 and the correction device 14 respectively.

Here, the measurement object 100 is, for example, a plate-shaped metal plate having a long direction. The measurement object 100 is, for example, measured by the measuring device 1 after the heat treatment.

The base portion 11 includes a lower frame 21, one or a pair of side pillars 22 provided on one side surface or a pair of side surfaces of the lower frame 21, and an upper frame 23 provided on the pillars 22. The base portion 11 has a square frame shape in front or a C shape. In the present embodiment, the base portion 11 has a square frame shape having a pair of pillars 22 and is described below.

The base portion 11 is, for example, the lower surface of the lower frame 21 and the pillars 22 The lower surface is fixed to the setting surface 200. The installation surface 200 is, for example, a floor or the like in which a factory or the like of the measuring device 1 is installed.

The lower frame 21 is a square plate shape. The length between the pair of side faces of the lower frame 21 on which the pillars 22 are provided is longer than the length of the measurement object 100 in the width direction.

The pillars 22 are square plate-shaped or rod-shaped. The length of the pair of distance measuring devices 12 of the strut 22 is such that the gap between the pair of distance measuring devices 12 allows the measuring object 100 to pass, and the length of each of the distance measuring devices 12 can be separated from the measuring object 100. . The support post 22 is a side surface on which the lower frame 21 is fixed to the lower end, and the upper frame 23 is fixed to the upper end. That is, the pillars 22 are connected to the lower frame 21 and the upper frame 23.

The upper frame 23 is a square plate shape. The upper frame 23 is, for example, substantially the same shape as the lower frame 21 and faces the lower frame 21. The upper frame 23 is such that the auxiliary member 13 is fixed to the lower side thereof.

A pair of range finder 12 are arranged opposite each other. One pair of range finder 12 is fixed to the upper surface of the lower frame 21, and the other is fixed to the lower surface of the auxiliary member 13. The gap between the opposing pair of range finder 12 is the length through which the measuring object 100 can pass. The pair of range finder 12 is a distance that can be measured to the measurement object 100 that passes through each other. A pair of range finder 12 transmits the measured information to the control unit 15 via the signal line 99.

The auxiliary member 13 is, for example, a square plate shape or a block shape. The auxiliary member 13 has one of its opposing main faces fixed to the lower surface of the upper frame 23, and the range finder 12 is fixed to the other of the main faces. In other words, a pair The other of the range finder 12 is opposed to one of the pair of distance measuring devices 12, and is separated by a predetermined distance, and is fixed to the upper frame 23 through the auxiliary member 13 between itself and the upper frame 23.

The auxiliary member 13 is a material having a linear expansion coefficient different from the linear expansion coefficient of the support 22, and specifically, a material having a linear expansion coefficient higher than the linear expansion coefficient of the support 22. Further, the length of the pair of distance measuring devices 12 of the auxiliary member 13 in the opposing direction is the same as the amount of expansion of the pillars 22 which are expanded in the direction in which the pair of distance measuring devices 12 are opposed to each other by the heat. length. Here, the direction in which the pair of range finder 12 opposes is the up and down direction, that is, the height direction.

Hereinafter, the materials and lengths of the pillars 22 and the auxiliary members 13 will be specifically described. As shown in Fig. 1, the length of the support member 22 in the vertical direction is set to L1, and the length of the auxiliary member 13 in the vertical direction is set to L2. The material of the pillars 22 is the first material of the linear expansion coefficient M1, and the material of the auxiliary member 13 is the second material having a linear expansion coefficient M2 (M1 < M2) larger than the linear expansion coefficient M1. At this time, the length L2 of the auxiliary member 13 is L2 = L1/(M2/M1).

For example, when the material of the pillars 22 is an iron material and the auxiliary member 13 is an aluminum material, the linear expansion coefficient of the aluminum material is about twice the linear expansion coefficient of the iron material, so the length L2 of the auxiliary member 13 in the up and down direction, It is L2=L1/2. With such a configuration, the amount of expansion of the strut 22 and the auxiliary member 13 by heat is substantially the same.

The correcting means 14 is a length which can measure the distance between a pair of range finder 12, in other words, the gap of a pair of range finder 12. Correction device 14. The measured information is transmitted to the control unit 15 via the signal line 99.

The control unit 15 is a difference between the distance between the pair of distance measuring devices 12 measured by the correction device 14 and the distance from the pair of distance measuring devices 12 to the measurement target 100. The thickness of the measurement object 100 is derived.

Next, the measurement of the measuring object 100 using the measuring device 1 thus constructed will be described.

First, when the measurement object 100 heated by the heat treatment is measured by the measurement device 1, the measurement object 100 is passed between the pair of distance meters 12 by a conveyance device such as a conveyor belt. Further, the position at which the measurement target 100 passes is not particularly limited as long as each of the distance measuring device 12 and the measurement target 100 is separated.

When the measurement target 100 passes through the base portion 11, the base portion 11 and the auxiliary member 13 are heated by the heat of the measurement object 100, and the pillars 22 and the auxiliary member 13 are expanded in the vertical direction. Since the base portion 11 and the support frame 22 are fixed to the installation surface 200, the support portion 22 is expanded upward. Further, since the upper frame 23 to which the auxiliary member 13 is fixed is fixed to the support post 22, the auxiliary member 13 is inflated in the downward direction with respect to the upper frame 23.

The pillars 22 and the auxiliary members 13 have different linear expansion coefficients. However, since the lengths are L1 and L2 which are set to have the same amount of expansion, the pillars 22 and the auxiliary members 13 are vertically moved from the same amount of expansion. Swell. As a result, the range finder 12 fixed to the auxiliary member 13 by the expansion of the auxiliary member 13 is only the amount of expansion with the struts 22. The same amount is moved downward so that the gap of the pair of range finder 12 is held constant.

The pair of distance measuring devices 12 are distances measured to the passing measurement target 100, and the measured information is transmitted to the control unit 15. The control unit 15 is the difference between the distance between the pair of range finder 12 detected by the correction device 14 and the sum of the distances from the range finder 12 to the measurement target 100 received. The thickness of the measurement object 100 is derived. Further, for example, the correction device 14 measures the distance between the pair of distance measuring devices 12 in advance before the measurement of the measurement target 100, and transmits the information to the control unit 15. These measurements are made in a part or all of the feeding direction of the measuring object 100, and the thickness of the measuring object 100 is measured.

According to the measuring device 1 of the first embodiment configured as described above, the strut 22 is formed by the same amount of expansion by the heat of the strut 22 and the auxiliary member 13 in the direction opposite to the pair of distance measuring devices 12. The expansion is offset by the expansion of the auxiliary member 13 to which the range finder 12 is fixed, so that the gap between the pair of distance meters 12 can be made constant. With these, the measuring device 1 is such that the measuring object 100 can be measured with high precision by a pair of distance measuring devices 12.

As described above, according to the measuring apparatus 1 of the first embodiment, even if the length of the strut 22 is changed by heat, the thickness of the measuring object 100 can be measured with high precision.

(Second embodiment)

Next, with respect to the measuring device 1A of the second embodiment, the second drawing is used. Description.

Fig. 2 is an explanatory view showing the configuration of the measuring device 1A of the second embodiment. In the measurement device 1A of the second embodiment, the same components as those of the measurement device 1 of the above-described first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The measuring device 1A includes a frame-shaped base portion 11A through which the measurement target 100 passes, a pair of distance measuring devices 12 disposed on the base portion 11A and opposed to each other, a correction device 14, and a control portion 15.

The base portion 11A includes a lower frame 21, one or a pair of side walls 22 provided on one side surface or a pair of side surfaces of the lower frame 21, an auxiliary member 13A provided on the support post 22, and an upper frame provided on the auxiliary member 13A. twenty three. The base portion 11A has a square frame shape in front or a C shape. In the present embodiment, the base portion 11A has a square frame shape having a pair of pillars 22 and is described below.

The auxiliary member 13A is, for example, a plate shape. The auxiliary member 13A has an upper end fixed to the upper end of the stay 22 and a lower end fixed to the upper frame 23. Further, the auxiliary member 13A is, for example, an upper end surface thereof is fixed to the upper end surface of the support post 22 by the fixing portion 31, and a lower end of the main surface opposed to the upper frame 23 is fixed to the side surface of the upper frame 23. The fixing portion 31 may be, for example, a mechanically fixed member such as a plate material or a bolt, or a mechanically fixed member such as a welded portion.

The auxiliary member 13A is a material having a linear expansion coefficient different from the linear expansion coefficient of the strut 22, specifically, a material having a linear expansion coefficient higher than the linear expansion coefficient of the strut 22. to make. Further, the length of the pair of distance measuring devices 12 of the auxiliary member 13A in the opposing direction is the same as the amount of expansion of the pillars 22 which is expanded by the direction in which the pair of distance gauges 12 are opposed to each other by the heat. length. Here, the direction in which the pair of range finder 12 opposes is the up and down direction, that is, the height direction.

Hereinafter, the materials and lengths of the pillars 22 and the auxiliary members 13A will be specifically described. As shown in Fig. 2, the length of the support member 22 in the vertical direction is set to L1, and the length of the auxiliary member 13A in the vertical direction is set to L2. The material of the pillars 22 is the first material of the linear expansion coefficient M1, and the material of the auxiliary member 13 is the second material having a linear expansion coefficient M2 (M1 < M2) larger than the linear expansion coefficient M1. At this time, the length L2 of the auxiliary member 13 is L2 = L1/(M2/M1).

For example, when the material of the pillars 22 is an iron material and the auxiliary member 13 is an aluminum material, the linear expansion coefficient of the aluminum material is about twice the linear expansion coefficient of the iron material, so the length L2 of the auxiliary member 13A in the up and down direction, It is L2=L1/2. With such a configuration, the amount of expansion of the strut 22 and the auxiliary member 13A by heat is substantially the same.

The upper frame 23 is a square plate shape. The upper frame 23 is configured, for example, only the thickness of the auxiliary member 13A is smaller than that of the lower frame 21.

A pair of range finder 12 are arranged opposite each other. One pair of range finder 12 is fixed to the upper surface of the lower frame 21 and the other to the upper frame 23.

In the measurement device 1A configured as described above, similarly to the above-described measurement device 1, the gap between the pair of distance measuring devices 12 can be kept constant. Specifically, by measuring the heat of the object 100, the base 11A is When the pillars 22 and the auxiliary members 13A are heated to expand in the vertical direction, the base portion 11A is fixed to the installation surface 200 by the lower frame 21 and the pillars 22, so that the pillars 22 are expanded upward. Further, since the auxiliary member 13A is fixed to the stay 22, it is swollen from the fixed portion 31 in the downward direction.

Further, the pillars 22 and the auxiliary members 13A have different linear expansion coefficients. However, since the lengths are set to L1 and L2 of the same expansion amount, the pillars 22 and the auxiliary members 13A are respectively expanded in the vertical direction by the same amount of expansion. As a result, by the expansion of the auxiliary member 13A, the upper frame 23 fixed to the auxiliary member 13A and the range finder 12 fixed to the upper frame 23 are moved downward only in the same amount as the expansion amount of the stay 22, so that a pair The gap of the range finder 12 is necessarily maintained.

According to the measuring apparatus 1A of the second embodiment configured as above, the amount of expansion by the heat of the strut 22 and the auxiliary member 13A can be the same in the direction in which the pair of distance measuring devices 12 oppose each other. Thereby, the measuring device 1A can cancel the expansion in the vertical direction of the support column 22 and the downward expansion of the auxiliary member 13A under the upper frame 23 to which the distance measuring device 12 is fixed, so that a pair of tests can be performed. The gap of the distance meter 12 becomes constant. With these, the measuring device 1A makes it possible to measure the measuring object 100 with high precision by a pair of distance measuring devices 12.

(Third embodiment)

Next, the measurement apparatus 1B of the third embodiment will be described using FIG.

Fig. 3 is a view showing the configuration of the measuring device 1B of the third embodiment. Illustrating. In the measurement device 1B of the third embodiment, the same components as those of the measurement device 1 of the first embodiment and the measurement device 1A of the second embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The measuring device 1B includes a frame-shaped base portion 11B through which the measurement target 100 passes, a pair of distance measuring devices 12 disposed on the base portion 11B and opposed to each other, a correction device 14, and a control portion 15.

The base portion 11B includes a lower frame 21, one or a pair of side walls 22B provided on one side surface or a pair of side surfaces of the lower frame 21, and an upper frame 23 provided on the auxiliary member 13B. The base portion 11B has a square frame shape in front or a C shape. In the present embodiment, the base portion 11B is formed in a square frame shape having a pair of pillars 22B and will be described below.

The pillar 22B includes a first pillar 22a that is fixed to the lower frame 21, an auxiliary member 13B that is fixed to the first pillar 22a, and a second pillar 22b that is fixed to the auxiliary member 13B. The length of the pair of distance measuring devices 12 of the strut 22B in the opposing direction is a length having a gap in which the measuring object 100 can pass through the pair of distance measuring devices 12, and each of the distance measuring devices 12 and the measuring object 100 can be separated.

The first pillar 22a has a square plate shape or a rod shape. The first pillar 22a is a side surface on which the side surface of the lower frame 21 is fixed to the lower end, and the auxiliary member 13B is fixed to the upper end. The first pillar 22a is fixed to the installation surface 200, for example. The second pillar 22b is a square plate shape or a rod shape. The second pillar 22b is a side surface on which the side surface of the upper frame 23 is fixed to the upper end, and the auxiliary member 13B is fixed to the lower end.

The auxiliary member 13B is, for example, a plate shape. Auxiliary member 13B, The upper end is fixed to the upper end of the first post 22a, and the lower end is fixed to the lower end of the second post 22b. Further, in the auxiliary member 13B, for example, the upper end surface is fixed to the upper end surface of the first pillar 22a by the fixing portion 31, and the lower end surface is fixed to the lower end surface of the second pillar 22b by the fixing portion 31.

The auxiliary member 13B is a material having a linear expansion coefficient different from the linear expansion coefficient of the first pillar 22a and the second pillar 22b, and specifically has a linear expansion coefficient larger than that of the first pillar 22a and the second pillar 22b. A material with a high coefficient of linear expansion. Further, the length of the pair of distance measuring devices 12 of the auxiliary member 13B in the opposing direction is such that the first column 22a and the second column 22b are inflated in the direction in which the pair of distance measuring devices 12 oppose each other. The same amount is the length of the amount of expansion. Here, the direction in which the pair of range finder 12 opposes is the up and down direction, that is, the height direction.

Hereinafter, the materials and lengths of the first pillar 22a, the second pillar 22b, and the auxiliary member 13B will be specifically described. As shown in FIG. 3, the length of the first pillar 22a in the vertical direction is L11, the length of the second pillar 22b in the vertical direction is L21, and the length of the auxiliary member 13B in the vertical direction is L2. The material of the first pillar 22a and the second pillar 22b is a first material having a linear expansion coefficient M1, and the material of the auxiliary member 13B is a second material having a linear expansion coefficient M2 (M1 < M2) larger than the linear expansion coefficient M1. At this time, the length L2 of the auxiliary member 13B is L2 = (L11 + L12) / (M2 / M1).

For example, when the material of the first pillar 22a and the second pillar 22b is an iron material and the auxiliary member 13B is an aluminum material, since the linear expansion coefficient of the aluminum material is about twice the linear expansion coefficient of the iron material, The length L2 of the auxiliary member 13B in the vertical direction is L2 = (L11 + L12)/2. For example, when L11 and L12 are formed to have the same length, the lengths of the first pillar 22a, the second pillar 22b, and the auxiliary member 13B in the vertical direction are substantially equal. With such a configuration, the sum of the amounts of expansion by the heat of the first support 22a and the second support 22b and the amount of expansion by the heat of the auxiliary member 13B are substantially the same.

The upper frame 23 is a square plate shape. The upper frame 23 is, for example, substantially the same shape as the lower frame 21.

A pair of range finder 12 are arranged opposite each other. One pair of range finder 12 is fixed to the upper surface of the lower frame 21, and the other is fixed to the lower surface of the upper frame 23.

In the measurement device 1B configured as described above, similarly to the above-described measurement devices 1 and 1A, the gap between the pair of distance measuring devices 12 can be kept constant. Specifically, when the base portion 11B is heated by the heat of the measuring object 100 and the pillar 22B is expanded in the vertical direction, the base portion 11B is fixed to the installation surface 200 by the lower frame 21 and the first pillar 22a, so the first pillar 22a expands upwards. Since the upper end of the auxiliary member 13B is fixed to the upper end of the first stay 22a, the auxiliary member 13B is expanded downward from the upper end of the first stay 22a. Further, since the lower end of the second pillar 22b is fixed to the lower end of the auxiliary member 13B, the second pillar 22b is expanded upward from the lower end of the auxiliary member 13B.

The first pillar 22a, the second pillar 22b, and the auxiliary member 13B have different linear expansion coefficients, but are set to have a length of the first pillar 22a and the second pillar 22b, and a length of the auxiliary member 13B. The degree is L11, L12, and L2 which are the same amount of expansion. Therefore, the first pillar 22a, the second pillar 22b, and the auxiliary member 13A are respectively expanded in the vertical direction by the same amount of expansion. As a result, the upper frame 23 fixed to the auxiliary member 13A and the range finder 12 fixed to the upper frame 23 by the expansion of the auxiliary member 13A are only the first support 22a and the second support 22b which are inflated upward. The amount of the same amount of expansion moves downward, so that the gap of the pair of range finder 12 is kept constant.

According to the measuring device 1B of the third embodiment configured as described above, the amount of expansion of the first strut 22a, the second strut 22b, and the auxiliary member 13B due to heat in the opposing direction of the pair of distance measuring devices 12 Can be the same. As a result, the measurement device 1B can expand the gap between the pair of distance measuring devices 12 by expanding the upward direction of the first support 22a and the second support 22b and canceling the expansion of the auxiliary member 13B in the downward direction. With these, the measuring device 1B is such that the measuring object 100 can be measured with high precision by a pair of distance measuring devices 12.

(Fourth embodiment)

Next, the measurement apparatus 1C of the fourth embodiment will be described using FIG.

Fig. 1 is an explanatory view showing the configuration of the measuring device 1 of the first embodiment. In the measurement device 1C of the fourth embodiment, the same components as those of the measurement device 1 of the above-described first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The measuring device 1C includes: a measurement object 100 is passed through a frame-shaped base portion 11 and a pair of distance measuring devices 12 disposed on the base portion 11 and facing each other, and an auxiliary member 13C provided between the base portion 11 and one of the range finder 12, and a pair of distance measuring devices The correction device 14 for the gap of 12 gaps and the control unit 15 for transmitting the signal line 99 to the pair of range finder 12 and the correction device 14 respectively.

The auxiliary member 13C is fixed to the upper surface of the lower frame 21.

A pair of range finder 12 are arranged opposite each other. One pair of range finder 12 is fixed to the auxiliary member 13C, and the other is fixed to the lower surface of the upper frame 23.

The auxiliary member 13C is, for example, a square plate shape or a block shape. The auxiliary member 13C has one of the opposing main faces fixed to the upper surface of the lower frame 21, and the range finder 12 is fixed to the other of the main faces. In other words, one of the pair of range finder 12 faces the other of the pair of range finder 12, and is separated by a predetermined distance, and is fixed to the lower frame through the auxiliary member 13C between itself and the lower frame 21. twenty one.

The auxiliary member 13C is a material having a linear expansion coefficient different from the linear expansion coefficient of the strut 22, and specifically, a material having a linear expansion coefficient higher than the linear expansion coefficient of the strut 22. Further, the length of the pair of distance measuring devices 12 of the auxiliary member 13C in the opposing direction is the same as the amount of expansion of the pillars 22 which is expanded by the direction in which the pair of distance gauges 12 are opposed to each other by the heat. length. Here, the direction in which the pair of range finder 12 opposes is the up and down direction, that is, the height direction.

Hereinafter, the materials and lengths of the pillars 22 and the auxiliary members 13C will be specifically described. As shown in Fig. 4, the up and down direction of the pillar 22 is The length is set to L1, and the length of the auxiliary member 13C in the vertical direction is set to L2. The material of the strut 22 is the first material having the linear expansion coefficient M1, and the material of the auxiliary member 13C is the second material having a linear expansion coefficient M2 (M1 < M2) larger than the linear expansion coefficient M1. At this time, the length L2 of the auxiliary member 13C is L2 = L1/(M2/M1).

For example, when the material of the pillar 22 is an iron material and the auxiliary member 13C is a rubber material, the linear expansion coefficient of the rubber material is about 10 times the linear expansion coefficient of the iron material, so the length L2 of the auxiliary member 13C in the up and down direction, It is L2=L1/10. With such a configuration, the amount of expansion of the strut 22 and the auxiliary member 13C by heat is substantially the same.

According to the measuring device 1C configured as described above, the same effects as those of the measuring device 1 described above can be achieved. That is, in the opposing direction of the pair of distance measuring devices 12, the expansion amount by the heat of the strut 22 and the auxiliary member 13C is made the same, and even if the strut 22 is expanded upward, the auxiliary member 13C can still face upward. Expanded by the same amount of expansion.

Therefore, even if the upper frame 23 provided with the range finder 12 moves upward, the pair of distance measuring instruments 12 can be moved upward by the auxiliary member 13C. As described above, the expansion of the strut 22 in the upward direction is offset by the expansion of the auxiliary member 13C in the upward direction, so that the gap between the pair of distance measuring devices 12 can be made constant. In the measuring device 1C, the thickness of the auxiliary member 13C can be reduced by using the rubber member in the auxiliary member 13C. As a result, the measuring device 1C can be downsized. With these, the measuring device 1 is made possible by the pair of distance measuring devices 12, and the measuring object 100 is made of high precision. Degree measurement.

(Fifth Embodiment)

Next, the measurement apparatus 1D of the fifth embodiment will be described using FIG.

Fig. 5 is an explanatory view showing the configuration of the measuring device 1D of the fifth embodiment. In the measurement device 1D of the fifth embodiment, the same components as those of the measurement device 1 of the above-described first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The measuring device 1D includes a frame-shaped base portion 11D through which the measurement target 100 passes, a pair of distance measuring devices 12 disposed on the base portion 11D and opposed to each other, and a correction for measuring the distance between the gaps of the pair of distance measuring devices 12 The device 14 and the control unit 15 connected to the pair of range finder 12 and the correction device 14 via the signal line 99 are respectively provided. Further, the measuring device 1D is different from the above-described measuring device 1, and does not have the auxiliary member 13.

The base portion 11D includes a lower frame 21, a pair of pillars 22 provided on a pair of side faces of the lower frame 21, and an upper frame 23 provided on the pillars 22. The base portion 11D has a square frame shape in front view. Further, the base portion 11D is a material having at least the lower linear expansion coefficient of the lower frame 21 and the upper frame 23, and has the same shape.

The base portion 11D is disposed on the installation surface 200. In the base portion 11D, the lower surface of one of the pillars 22 is fixed to the installation surface 200, and the lower frame 21 and the other pillar 22 are supported by the installation surface 200. Specifically, in the base portion 11D, the lower frame 21 and the other pillar 22 are not fixed to the installation surface 200, but the installation surface 200 faces the surface of the installation surface 200. It is movably constructed.

For example, in the base portion 11D, one of the pillars 22 is fixed by the fixing portion 32 such as a plate member or a bolt. Further, for example, the base portion 11D is configured such that the lower frame 21 and the other pillar 22 are movably attached to the installation surface 200 by rails, casters, or the like. The installation surface 200 is, for example, a floor or the like in which a factory or the like of the measuring device 1 is installed.

A pair of range finder 12 are arranged opposite each other. One pair of range finder 12 is fixed to the upper surface of the lower frame 21, and the other is fixed to the lower surface of the upper frame 23. The gap between the opposing pair of range finder 12 is the length through which the measurement object 100 can pass.

Next, the measurement of the measuring object 100 using the measuring device 1 thus constructed will be described.

First, when the measurement object 100 heated by, for example, heat treatment is measured by the measurement device 1, the measurement object 100 is passed between the pair of distance meters 12 by a conveyance device such as a conveyor belt.

At this time, the base portion 11D is heated by the heat of the measuring object 100, and the lower frame 21 and the upper frame 23 are facing the surface of the lower frame 21 and the upper frame 23 to which the main surface of the range finder 12 is fixed, in other words, The direction perpendicular to the direction in which the range finder 12 is perpendicularly intersects, and in other words, expands in the lateral direction.

In the base portion 11D, since one of the pillars 22 is fixed to the installation surface 200, the lower frame 21 and the other pillar 22 are movably supported by the installation surface 200, and the lower frame 21 and the upper frame 23 are as shown in FIG. As shown by the two-point lock line, it expands in the horizontal direction. As a result, the other pillar 22 is One of the lateral direction, that is, one of the pillars 22 is expanded, and the lower frame 21 and the upper frame 23 are maintained in a plate shape.

Specifically, if the pair of struts 22 are fixed to the installation surface 200, the lower frame 21 and the upper frame 23 which are inflated by heat are fixed to the pair of struts 22, so that only The amount of expansion is deformed in the up and down direction. By this deformation, the distance between the pair of range finder 12 becomes larger or smaller.

In the base portion 11D of the present embodiment, one of the pillars 22 is fixed to the installation surface 200 through the fixing portion 32, and the other pillars 22 and the lower frame 21 are not fixed to the installation surface 200. Thereby, the lower frame 21 and the upper frame 23 are prevented from being deformed, and since the lower frame 21 and the upper frame 23 are formed into the same linear expansion coefficient and the same shape and have the same expansion amount, the pair of distance measuring devices 12 are The horizontal direction moves only by the same amount. Therefore, the deformation of the passing measurement object 100 due to heat is prevented, and the range finder 12 is maintained in a state of being opposed to each other.

Next, the pair of distance measuring devices 12 are distances measured to the passing measurement target 100, and the measured information is transmitted to the control unit 15. The control unit 15 is the difference between the distance between the pair of range finder 12 detected by the correction device 14 and the sum of the distances from the range finder 12 to the measurement target 100 received. The thickness of the measurement object 100 is derived. Further, for example, the correction device 14 measures the distance between the pair of distance measuring devices 12 in advance before the measurement of the measurement target 100, and transmits the information to the control unit 15. These measurements are performed across a part or all of the feeding direction of the measuring object 100, and the thickness of the measuring object 100 is measured.

According to the measuring device 1D of the fifth embodiment configured as described above, the lower frame 21 and the other pillar 22 are movably supported on the installation surface 200 by fixing only one of the pillars 22 to the installation surface 200. It is possible to prevent deformation of the lower frame 21 and the upper frame 23 caused by heat. As a result, the gap of the pair of range finder 12 can be prevented from being changed by the deformation of heat. With these, the measuring device 1D is such that the measuring object 100 can be measured with high precision by a pair of distance measuring devices 12.

(Sixth embodiment)

Next, the measurement apparatus 1E of the sixth embodiment will be described using FIG.

Fig. 6 is an explanatory view showing the configuration of the measuring device 1E of the sixth embodiment. In the measurement device 1E of the sixth embodiment, the same components as those of the measurement device 1 of the first embodiment and the measurement device 1D of the fifth embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The measuring device 1E includes a frame-shaped base portion 11D through which the measurement target 100 passes, a pair of distance measuring devices 12 disposed on the base portion 11D and opposed to each other, and a distance between the base portion 11D and one of the range finder 12 The auxiliary member 13 and the correction device 14 for measuring the distance between the gaps of the pair of rangefinders 12 and the control unit 15 connected to the pair of range finder 12 and the correction device 14 via the signal line 99 are respectively provided.

A pair of range finder 12 are arranged opposite each other. One of the pair of distance meters 12 is fixed to the upper surface of the lower frame 21, and the other is fixed to the auxiliary member 13. The gap between the opposite pair of range finder 12 is the measurement object The length that 100 can pass.

Here, the lower frame 21 and the upper frame 23 are made of a material having the same linear expansion coefficient, and the auxiliary member 13 is made of a material having a linear expansion coefficient higher than that of the pillars 22.

Further, the lower frame 21 and the upper frame 23 have the same shape, and have the same amount of expansion as the amount of expansion which is expanded by the direction of the pair of distance measuring devices 12 by heat.

According to the measuring device 1E of the sixth embodiment configured as described above, similarly to the first embodiment described above, the expansion of the strut 22 can be offset by the expansion of the auxiliary member 13 to which the distance measuring device 12 is fixed, and the above-described Similarly to the fifth embodiment, deformation of the lower frame 21 and the upper frame 23 caused by heat can be prevented from occurring. As a result, according to the measuring device 1E, the gap change of the pair of range finder 12 can be prevented. With these, the measuring device 1E makes it possible to measure the measuring object 100 with high precision by a pair of distance measuring devices 12.

Further, the measuring device is not limited to the examples of the above embodiments.

In the above-described example, the measuring device 1A includes the lower frame 21, one or a pair of struts 22 provided on one side or a pair of side faces of the lower frame 21, and an auxiliary member 13A provided on the struts 22. The configuration of the upper frame 23 provided in the auxiliary member 13A is not limited thereto. For example, in the measurement device 1A, similarly to the above-described measurement devices 1D and 1E, one of the pair of pillars 22 is fixed to the installation surface 200 by the fixing portion 32, and the other of the pair of pillars 22 is provided to the installation surface 200. The composition of the movement is also ok. borrow With such a configuration, the measuring device 1A can achieve the same effects as the above-described measuring device 1E.

Similarly, in the measuring devices 1B and 1C, one of the pillars 22 and 22B is fixed to the installation surface 200 by the fixing portion 32, and the lower frame 21 and the other pillars 22 and 22B are movably supported by the installation surface 200. The configuration on the installation surface 200 is also possible.

Further, in the above-described example, each of the measuring devices 1 to 1E has a configuration in which each of the auxiliary members 13, 13A, 13B, and 13C is provided, but the present invention is not limited thereto. Each of the measuring devices 1 to 1E can be used in combination as appropriate. That is, the measuring device may be a measuring device having the auxiliary members 13, 13A, 13B, and 13C in combination.

In the above-described examples, each of the measuring devices 1 to 1E is a configuration in which the pillars 22 and the auxiliary members 13, 13A, 13B, and 13C are made of a metal material or a rubber material, but are not limited thereto. The material of the pillars 22 and the auxiliary members 13, 13A, 13B, and 13C can be appropriately set if the amount of expansion by heat is canceled.

In the above-described example, the material of the first pillar 22a and the second pillar 22b of the measuring device 1B is a first material having the same linear expansion coefficient, but is not limited thereto. In other words, the first pillar 22a and the second pillar 22b may have different linear expansion coefficients, and the first pillar 22a and the second pillar 22b may be configured to cancel the expansion amount of the first pillar 22a and the second pillar 22b by the amount of expansion of the auxiliary member 13B.

For example, the first pillar 22a is a first material having a linear expansion coefficient M1, and the material of the second pillar 22b is a third material having a linear expansion coefficient M3. The material of the auxiliary member 13B is a second material having a linear expansion coefficient M2 (M1 < M2, M3 < M2) larger than the linear expansion coefficients M1, M3. In this case, when the length L2 of the auxiliary member 13B is L2=(L11‧M1+L12‧M3)/M2, the sum of the expansion amounts of the first support 22a and the second support 22b can be increased by the expansion amount of the auxiliary member 13B. offset.

According to the measuring device of at least one of the above-described embodiments, even if the length of the strut is varied by heat, by adjusting the amount of expansion of the strut by the amount of expansion of the auxiliary member, a pair of distance measuring can be arranged in the opposite direction. The distance of the opposite direction of the instrument is kept constant, and the thickness of the object can be measured with high precision.

Although some embodiments of the invention have been described, these embodiments are intended to be illustrative only and not intended to limit the scope of the invention. The present invention may be embodied in a variety of other forms and various modifications, substitutions and changes can be made without departing from the scope of the invention. The embodiments and the modifications thereof are included in the scope and spirit of the invention, and are included in the scope of the invention as claimed.

Claims (1)

A measuring device comprising: a base frame, a lower frame, an upper frame disposed opposite the lower frame, and a pillar connecting the lower frame and the upper frame; and a pair of distance measuring devices respectively disposed at The lower frame and the upper frame are disposed opposite to each other and have a gap through which the measurement target can pass; and the auxiliary member is formed on the base and is made of a material having a linear expansion coefficient different from the support. The length of the pair of distance measuring devices in the opposing direction has the same amount of expansion as the amount of expansion of the above-mentioned strut by the heat in the direction opposite to the pair of distance measuring devices; the pillar has: the lower end is The first pillar and the upper end fixed to the lower frame are fixed to the second pillar of the upper frame, and the auxiliary member is disposed between the side surface of the first pillar and the side surface of the second pillar, and the upper end is fixed The lower end of the first pillar is fixed to the lower end of the second pillar.