TW202037887A - Device for measuring glass sheet and merthod for manufacturing glass sheet - Google Patents

Abstract

A device 1 for measuring a glass sheet measures the squareness between an end surface Gb and an end surface Gc, which intersect at a corner G1 of a rectangular glass sheet G, wherein the device 1 for measuring a glass sheet is provided with: a table 2 having a mounting section 2x on which the glass sheet G is placed; a first pin 11 which makes contact with the end surface Gc; a second pin 12 which makes contact with the end surface Gb; and a distance meter 13 which measures the actual displacement of the position of a second end surface Gb of the glass sheet G positioned on the mounting section 2x by the first pin 11 and the second pin 12, the displacement being measured relative to a reference position where the second end surface Gb is positioned when the end surface Gb and the end surface Gc form a right angle therebetween.

Description

Glass plate measuring device and glass plate manufacturing method

The present invention relates to a glass plate measuring device for measuring the right angle of the end face of the glass plate and a method for manufacturing the glass plate.

The manufacturing step of the glass plate includes a cutting step of cutting the glass plate into a predetermined size, and an end surface processing step of performing finishing processing such as chamfering on the cut end surface of the glass plate.

Generally, in the end surface processing step, the cut end surface is used as a reference to position the glass plate, and in various steps after the end surface processing step, the finished end surface is used as a reference to position the glass plate.

Therefore, for example, for the purpose of implementing accurate positioning, after the cutting step or the end surface processing step, a shape measurement step of measuring the shape data of the glass plate including the right angle of the end surface of the glass plate is performed .

As one of the methods for measuring the straight angle of the glass plate, a method of photographing the four sides of the glass plate from above with a camera and analyzing the image obtained by the photographing is mentioned (for example, refer to Patent Document 1). [Prior Art Literature] [Patent Literature]

Patent Document 1: Japanese Patent Laid-Open No. 2007-205724

[The problem to be solved by the invention] However, except for some special glasses, glass plates are often transparent. Therefore, as disclosed in Patent Document 1, in the method of measuring the straight angle of a glass plate using image analysis, it is difficult to accurately detect the boundary between the edge of the glass plate and its background, and a high degree of image analysis is required. problem. Especially, as the glass plate becomes a thin plate, such a problem becomes remarkable.

In the present invention, a simple and reliable measurement of the right angle of the end face of the glass plate is a subject. [Means to solve the problem]

The present invention created to solve the above-mentioned problems is a glass plate measuring device for measuring the right angles of the first end surface and the second end surface intersecting at the corners of a rectangular glass plate. The device includes a table with a mounting glass. The mounting part of the board; the first pin, which is in contact with the first end surface; the second pin, which is in contact with the second end surface; and the distance meter, for the positioning of the first pin and the second pin on the mounting part The glass plate measures the displacement of the actual second end surface relative to the reference position where the second end surface is at a right angle to the first end surface and the second end surface.

According to this structure, while positioning the glass plate on the mounting portion by the first pin and the second pin, in the positioned state, the glass plate can be easily and reliably measured by the distance meter. The position of the second end surface is displaced from the reference position. Furthermore, based on the measured displacement, the inclination of the second end surface representing the right angle with respect to the first end surface can be easily calculated.

In the structure, it is preferable that the distance meter measures the displacement of the position of the second end surface from the reference position between the position where the second pin contacts the second end surface and the position where the second end surface crosses the first end surface.

If set in this way, the measurement position of the distance meter is close to the corner, so the range of variation from the reference position of the second end surface measured by the distance meter becomes small. As a result, the measurement range of the distance meter can be set to be small and the resolution can be improved. Therefore, it is easy to accurately measure the displacement of the second end surface from the reference position.

In the structure, it is preferable to calibrate the distance meter including: a calibration jig having a first guarantee surface and a second guarantee surface that can contact the first pin and the second pin and form a right angle with each other; and With the distance meter, the position of the second guarantee surface is measured together with the distance meter in the state where the first guarantee surface is in contact with the first pin.

It is very difficult to accurately set the calibration jig when calibrating the distance meter, and the operation requires skill. Therefore, in the state where the calibration distance meter is installed as described above and the first guarantee surface of the calibration jig is in contact with the first pin, the distance meter and the calibration related to the second guarantee surface of the calibration jig are confirmed. Use the distance meter to match the values, while making the second guarantee surface of the calibration jig contact the second pin. If set in this way, the setting of the calibration jig can be easily and accurately performed. Furthermore, if the position of the second guarantee surface of the calibration jig thus installed is measured with a distance meter and the reference position (zero point) is corrected, the distance meter can be accurately calibrated.

In this case, it is preferable that the correction distance meter is configured to be retractable from the second end surface of the glass plate.

If set in this way, when the second end surface of the glass plate is measured by the distance meter, the distance meter for calibration can be retracted from the second end surface of the glass plate, and it will not become an obstacle to the measurement by the distance meter. In addition, as a method of retreating the distance meter for calibration, for example, mounting the distance meter for calibration on an advance and retreat mechanism that can move forward and backward between the measurement position and the retreat position, or remove it from the table. Distance meter for calibration.

The present invention created in order to solve the above-mentioned problems is a method of manufacturing a glass plate including a measuring step that measures the right angle of an end face intersecting at a corner of a rectangular glass plate, and the method of manufacturing the glass plate Wherein, the measuring step includes the step of measuring the displacement of the position of the second end surface of the glass plate from the reference position using a measuring device suitably equipped with the above-mentioned structure; and calculating the second end surface representing the right angle relative to the first based on the measured displacement Steps for the inclination of one end face.

With such a structure, the same effect as the corresponding structure can be enjoyed. [Effects of the invention]

According to the present invention, the straight angle of the end face of the glass plate can be measured simply and reliably.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Furthermore, XYZ in the figure is an orthogonal coordinate system. X direction and Y direction are horizontal directions, and Z direction is vertical direction.

As shown in FIG. 1, the glass plate measuring apparatus 1 of this embodiment is an apparatus for measuring the shape data of the glass plate G of a rectangular shape. In this embodiment, the glass plate measuring device 1 measures the straightness of at least one end face Ga to end face Gd of the glass plate G as shape data, the vertical and horizontal dimensions of the glass plate G (X-direction dimensions and Y-direction dimensions), and the glass plate The right angle of the end face Ga to the end face Gd that intersect at least one of the corners G1 to G4 of G. That is, the glass plate measuring device 1 includes a straightness measuring device, a size measuring device, and a right angle measuring device.

(Table) The glass plate measuring device 1 includes a table 2 having a mounting portion 2x on which a glass plate G is mounted as a basic structure. The glass plate G is placed on the placement portion 2x of the table 2 so that the end face Ga and the end face Gb are substantially parallel to the X direction, and the end face Gc and the end face Gd are substantially parallel to the Y direction.

Here, the thickness of the glass plate G is, for example, 0.2 mm to 10 mm, and the size of the glass plate G is, for example, 700 mm×700 mm to 3000 mm×3000 mm. The glass plate G is manufactured by a well-known method such as a down draw method (for example, an over flow down draw method) and a float method. The glass plate G is used, for example, for a substrate of a flat panel display such as a liquid crystal display or a cover glass such as a touch panel.

The mounting portion 2x may be formed of a single or multiple planes. However, in this embodiment, it includes a first protruding stripe portion 2a and a second protruding stripe portion 2b having a long contact portion contacting the glass plate G.

The contact portion of the first protruding strip portion 2a extends along the opposing pair of end surfaces Ga and end surface Gb of the glass plate G, that is, the X direction, and the contact portion of the second protruding strip portion 2b extends along the opposing pair of end surfaces of the glass plate G Gc, the end surface Gd, that is, the Y direction is extended.

If set in this way, the contact portion of the first protruding strip portion 2a becomes elongated along the X direction. Therefore, when the glass plate G is moved in the X direction, the first protruding strip portion 2a does not become large relative to the glass plate G. resistance. Therefore, the glass plate G can be smoothly moved (slid) in the X direction in a state where the glass plate G is supported from below by the first protruding strip portion 2a. Similarly, the contact portion of the second protruding strip portion 2b becomes elongated along the Y direction, so when the glass sheet G is moved in the Y direction, the second protruding strip portion 2b does not become a large resistance to the glass sheet G. Therefore, the glass plate G can be smoothly moved (slid) in the Y direction in a state where the glass plate G is supported from below by the second ridge portion 2b. Therefore, it is possible to smoothly move the glass plate G in two different directions of the X direction and the Y direction while the glass plate G is supported by the first ridge portion 2a and the second ridge portion 2b. Positioning. In addition, compared to the case where the entire surface of the glass plate G is supported by the surface, the first protruding strip portion 2a and the second protruding strip portion 2b can reduce the supporting area. Therefore, even in the case of supporting a large-sized glass plate G, It is also possible to suppress an increase in cost accompanying the expansion of the supporting area of the placing portion 2x.

The first protruding strip portion 2a is spaced apart in the X direction, and multiple locations in the Y direction are provided. The second protruding strip portion 2b is spaced apart in the Y direction, and multiple locations in the X direction. There are multiple. That is, the first protruding line portion 2a and the second protruding line portion 2b are scattered on the table 2 with an interval therebetween so that the glass plate G can be supported in a stable posture.

The first protruding strip portion 2a and the second protruding strip portion 2b are detachably fixed to the table 2 by fastening tools (not shown) such as screws. Therefore, it is possible to individually replace any member among the plurality of protruding strip portions 2a and the protruding strip portions 2b.

Furthermore, the arrangement form of the first protruding strip portion 2a and the second protruding strip portion 2b is not particularly limited. For example, it may be a regular arrangement such as a grid or a zigzag, or it may be an irregular arrangement. In addition, the longitudinal direction of the contact portion of the first ridge portion 2a and the longitudinal direction of the contact portion of the second ridge portion 2b are not limited to the X direction or the Y direction, as long as they are directions different from each other. Furthermore, it is also possible to further provide another protruding stripe portion having a long contact portion along a direction different from the protruding stripe portion 2a and the protruding stripe portion 2b (for example, a direction where the angle formed with the X direction is 45°).

As shown in FIG. 2, in consideration of the posture stability of the first ridge portion 2 a on the table 2, the cross-sectional shape of the first ridge portion 2 a in the short-side direction (Y direction) is a trapezoid shape. That is, the width of the bottom part 2aa side of the 1st rib part 2a is larger than the width of the upper part 2ab side, and the bottom part 2aa is fixed to the table top 2 in the state in which it contact|abuts to the table top 2. Here, the upper portion 2ab (the contact portion with the glass plate G) of the first convex strip portion 2a may be a flat surface or a curved surface. Alternatively, the upper portion 2ab of the protruding strip portion 2a may narrow the width in the short-side direction to be linear. In this case, the cross-sectional shape of the first protruding strip portion 2a in the short-side direction (Y direction) can be set as Triangular shape. In addition, the cross-sectional shape of the short side direction of the 1st rib part 2a is not specifically limited, It can change variously. The first ridge portion 2a may have a cross-sectional shape as shown in FIGS. 3A to 3D, for example. In FIG. 3A, the front end part (glass plate G side) of the 1st convex strip part 2a has a trapezoid shape, and the base end part (table 2 side) has a rectangular shape. In FIG. 3B, the first convex strip portion 2a has a semicircular shape with a convex curved surface at its tip. In FIG. 3C, the first protruding strip portion 2a has a U-shape with two protruding strips arranged side by side. In FIG. 3D, the first convex strip portion 2a has a brush shape, that is, the first convex strip portion 2a may also include a brush. The cross-sectional shape in the short-side direction (X direction) of the second ridge portion 2b is not particularly limited, but the same shape as the cross-sectional shape in the short-side direction (Y direction) of the first ridge portion 2a can be adopted.

It is preferable that the contact part of the 1st convex-line part 2a and the contact part of the 2nd convex-line part 2b are resin, such as nylon, for example. If it is set in this way, the glass plate G will easily slide on the convex strip part 2a and the convex strip part 2b. Furthermore, in this embodiment, the whole of the 1st convex-line part 2a and the 2nd convex-line part 2b is formed of resin.

The size in the longitudinal direction (X-direction size) of the contact portion of the first ridge portion 2a and the size in the longitudinal direction (Y-direction size) of the contact portion of the second ridge portion 2b are preferably, for example, 0.2 mm to 20 mm . In addition, the short-side dimension (Y-direction dimension) of the contact portion of the first protruding strip portion 2a and the short-side dimension (X-direction dimension) of the contact portion of the second protruding strip portion 2b are preferably, for example, 5 mm to 400 mm.

As shown in FIG. 1, in this embodiment, the mounting part 2x further includes a plurality of columnar protrusions 2c. The protruding portion 2c supports the glass plate G from below by the tip portion. In order to facilitate the positioning of the glass plate G, the tip portion of the protrusion 2c may include a floating mechanism, but a spherical roller is included in this embodiment. The protrusions 2c are scattered on the table 2 with an interval therebetween. In addition, the arrangement form of the protrusions 2c is not particularly limited, and may be a regular arrangement such as a grid shape or a zigzag shape, or an irregular arrangement. In addition, the tip portion of the protrusion 2c may be a non-rotating body, and for example, any shape such as a convex curved surface or a flat surface may be adopted.

(Straightness measuring device) As shown in FIG. 1, the glass plate measuring device 1 includes a distance meter 3, a holding mechanism 4, a ruler 5, and a profiling mechanism 6 on the table 2 as a measure for the true straightness of the end face Ga to the end face Gd of the glass plate G. Degree (straightness) structure. Here, the straightness indicates the magnitude of the deviation of the linear shape from a geometrically positive straight line.

The distance meter 3 measures the distance to the end surface Ga of the glass plate G placed on the mounting portion 2x of the table 2, that is, the displacement of the end surface Ga of the glass plate G from the reference position. Here, in this embodiment, the reference position is set as the position of the both ends of the X direction of the end surface Ga of the glass plate G. That is, the distance meter 3 is corrected so that the measurement value of the distance meter 3 shows zero at both ends in the X direction of the end face Ga of the glass plate G, and the mounting position of the glass plate G is adjusted.

The distance meter 3 is a contact type distance meter (such as a dial gauge) that includes a contact piece 3a and a spindle 3b. The contact piece 3a is in contact with the end surface Ga of the measuring object, and the spindle 3b contacts the piece 3a is maintained to be able to advance and retreat in the Y direction. In this embodiment, the contactor 3a is a cylindrical roller, and rotates while contacting the end surface Ga of the glass plate G (refer FIG. 8 mentioned later). In addition, the contact 3a is urged by the end face Ga side of the object to be measured, so that it can imitate the end face Ga of the object to be measured. In addition, the contact 3a may be, for example, a rotating body formed into a shape other than a cylindrical shape (for example, a spherical roller), or a non-rotating body (for example, a needle-shaped member or a cylindrical shape) that slides on the end surface Ga of the glass plate G. Components, etc.).

The holding mechanism 4 holds the distance meter 3 so as to be movable in the Y direction (the direction separating from the end face Ga of the glass plate G) and the X direction (the direction along the end face Ga of the glass plate G).

The holding mechanism 4 includes: a first platform 4b that can move in the X direction along a guide rail 4a provided on the table 2; and a second platform 4d that can move in the Y direction along a guide rail 4c provided on the first platform 4b Move up. The first platform 4b can be moved in the X direction manually or automatically. A distance meter 3 is installed on the second platform 4d. Furthermore, the movement direction of the second stage 4d is parallel to the Y direction, but may have an angle with respect to the Y direction.

The holding mechanism 4 further includes a ruler 4e, which is arranged on the table 2 and represents the position of the distance meter 3 in the X direction. In this embodiment, predetermined marks indicating the measurement position by the distance meter 3 are engraved on the ruler 4e at equal intervals. In addition, the arrangement position of the ruler 4e can be any position such as the ruler 5, for example. The ruler 4e can also be omitted.

The ruler 5 is set on the table 2 along the X direction. Measure and record the straightness of ruler 5 in advance.

The profiling mechanism 6 is a mechanism for making the distance meter 3 attached to the holding mechanism 4 follow the ruler 5. The profiling mechanism 6 includes a pressing member 6a and a spring 6b.

The base end of the pressing member 6a is attached to the second platform 4d, and the front end is in contact with the ruler 5.

The spring 6b is provided across the space between the first platform 4b and the second platform 4d so as to draw the second platform 4d closer to the ruler 5 side. Due to the pulling force of the spring 6b, the pressing member 6a is pressed by the ruler 5, so the X-direction position of the distance meter 3 is stable. Furthermore, the spring 6b can also be installed in such a way as to press the second platform 4d to be close to the straightedge 5 side. In addition, the spring 6b may be another elastic body such as rubber, or may be omitted.

As shown in FIG. 4, the pressing member 6a includes a cylindrical roller 6c at the front end. The ruler 5 includes a concave guide groove 5a that accommodates the roller 6c. That is, the roller 6c rotates on the ruler 5 in a state of being accommodated in the guide groove 5a. In this embodiment, the straightness of the guide groove 5a is measured and recorded as the straightness of the ruler 5 in advance. Furthermore, the tip portion of the pressing member 6a may be, for example, a rotating body (for example, a spherical roller) formed in a shape other than a cylindrical shape, or a non-rotating body (for example, a spherical member or a cylindrical member) that slides on the ruler 5. Components, etc.).

(Size measuring device) As shown in FIG. 1, the glass plate measuring device 1 includes a first pin 7, a second pin 8, a first size meter 9, and a second size meter 10 on the table 2 as X for measuring the glass plate G The structure of the direction size and the Y direction size.

The first pin 7 contacts the end surface Gc of the glass plate G placed on the placement portion 2x of the table 2 that is substantially parallel to the Y direction. The second pin 8 contacts the end surface Ga of the glass plate G placed on the placement portion 2x of the table 2 that is substantially parallel to the X direction. That is, the second pin 8 contacts the end surface Ga that intersects the end surface Gc with which the first pin 7 is in contact at a substantially right angle.

The first dimension measuring meter 9 measures the dimension between the end surface Gc and the end surface Gd that are substantially parallel to the Y direction, that is, the dimension of the glass plate G in the X direction (first dimension). The second dimension measuring meter 10 measures the dimension between the end surface Ga and the end surface Gb that are substantially parallel to the X direction, that is, the Y direction dimension (second dimension) of the glass plate G.

The first dimension measuring meter 9 is a contact type distance meter (such as a dial gauge) including a contact 9a and a spindle 9b. The contact 9a is in contact with the end surface Gd, and the spindle 9b holds the contact 9a at X Can advance and retreat in the direction. Similarly, the second dimension measuring meter 10 is a contact type distance meter (such as a dial gauge) including a contact piece 10a and a spindle 10b. The contact piece 10a is in contact with the end surface Gb, and the spindle 10b holds the contact piece 10a. It can advance and retreat in the Y direction. In this embodiment, the contact 9a and the contact 10a are cylindrical non-rotating bodies. Furthermore, the contact 9a and the contact 10a may be, for example, a non-rotating body (for example, a spherical member or a needle-shaped member) or a rotating body (for example, a cylindrical roller or a spherical roller) formed in a shape other than a cylindrical shape. .

The first dimension measuring gauge 9 is installed on the first position adjustment mechanism F whose position in the X direction can be adjusted. Thereby, the position of the 1st dimension measuring meter 9 can be easily changed, and the glass plate G of a different dimension can be measured. In addition, when measuring shape data other than the size of the glass plate G, the first size meter 9 can be retracted to a position where it does not become an obstacle. The first position adjustment mechanism F is not particularly limited as long as it can adjust the X-direction position of the first size meter 9. In this embodiment, it includes: a first guide rail Fa provided on the table 2 and a The first slider Fb that moves the first guide rail Fa in the X direction. The first sliding member Fb can be moved in the X direction manually or automatically. A first size measuring gauge 9 is attached to the first sliding member Fb.

The second dimension measuring meter 10 is installed on a second position adjustment mechanism S capable of adjusting its position in the Y direction. Thereby, the position of the second dimension measuring gauge 10 can be easily changed, so that the glass plate G of a different dimension can be measured. In addition, when measuring other shape data other than the size of the glass plate G, the second size meter 10 can be retracted to a position where it does not become an obstacle. The second position adjustment mechanism S is not particularly limited as long as it can adjust the Y-direction position of the second dimension measuring instrument 10. In this embodiment, it includes: a second guide rail Sa provided on the table 2 and The second sliding member Sb of the second guide rail Sa moving in the Y direction. The second sliding member Sb can be moved in the Y direction manually or automatically. A second size measuring gauge 10 is mounted on the second sliding member Sb.

The first pin 7 and the first size measuring meter 9 are provided in two groups, and the second pin 8 and the second size measuring meter 10 are provided in two groups. That is, the X-direction size and the Y-direction size of the glass plate G are measured at two locations, respectively. Furthermore, the X-direction size and the Y-direction size may be the average value of two locations.

The grouped first pin 7 and the contact piece 9a of the first dimension measuring meter 9 are directly opposed to each other in the X direction. That is, the Y-direction position of the contactor 9a of the first pin 7 and the first dimension measuring meter 9 in the group is substantially the same. Similarly, the group of the second pin 8 and the contact piece 10a of the second dimension measuring gauge 10 are directly opposite to each other in the Y direction. That is, the X-direction position of the contactor 10a of the grouped second pin 8 and the second dimension meter 10 is substantially the same.

The first pin 7 and the second pin 8 are detachably held on the table 2. In this embodiment, engagement holes (not shown) for holding the pins 7 and 8 are provided on the table 2. The engaging holes are preferably provided in multiple positions of the table 2 so that when the size of the glass plate G is changed, the mounting positions of the pins 7 and 8 can be adjusted.

Furthermore, it may also be configured to omit any one of the set of the first pin 7 and the first size gauge 9, and the set of the second pin 8 and the second size gauge 10, and only measure Either the first size and the second size. From the viewpoint of efficiently measuring the longitudinal dimension and lateral dimension of the glass plate G, it is preferable to include a group of first pins 7 and a first dimension meter 9, and a group of second pins 8 and a second dimension at the same time. Measuring meter 10.

(Straight angle measuring device) As shown in FIG. 1, the glass plate measuring device 1 includes a first pin 11, a second pin 12, and a distance meter 13 on the table 2 as a structure for measuring the right angle of the end surface Ga to the end surface Gd of the glass plate G . In addition, the symbol 14 in the figure is a calibration distance meter for calibrating the distance meter 13.

The first pin 11 contacts the end face Gc (first end face) of the glass plate G placed on the placement portion 2x of the table 2 that is substantially parallel to the Y direction. The second pin 12 contacts the end face Gb (second end face) of the glass plate G placed on the placement portion 2x of the table 2 that is substantially parallel to the X direction. That is, the first pin 11 and the second pin 12 respectively contact the end face Gc and the end face Gb that intersect at the corner G1, which are objects of the right angle measurement.

The first pin 11 includes a pair of pins provided at an interval in the Y direction, and the second pin 12 includes a single pin provided with only one in the X direction. The end surface Gc is in contact with the pair of first pins 11 and is thereby held in parallel with the straight line connecting the pair of first pins 11. That is, the end surface Gc is maintained at a predetermined inclination set in advance. The second pin 12 maintains such an inclination of the end surface Gc, while being in contact with the end surface Gb. Thereby, the glass plate G is positioned by a total of three points of the pair of first pins 11 and the second pins 12.

The first pin 11 and the second pin 12 are detachably held on the table 2. In this embodiment, engagement holes (not shown) for holding the pins 11 and 12 are provided on the table 2. The engaging holes are preferably provided in multiple positions of the table 2 so that when the size of the glass plate G is changed, the mounting positions of the pins 11 and 12 can be adjusted.

The distance meter 13 measures the reference position of the end face Gb when the end face Gc and the end face Gb are at right angles to the glass plate G positioned by the first pin 11 and the second pin 12 (refer to the one-point chain line in Fig. 11 The actual position of the end face Gb (the deviation in the Y direction from the reference position) of the actual end surface Gb.

The distance meter 13 is a contact type distance meter (such as a dial gauge) that includes a contact piece 13a and a spindle 13b. The contact piece 13a is in contact with the end surface Gb, and the spindle 13b holds the contact piece 13a in the Y direction. Can advance and retreat. In this embodiment, the contact 13a is a cylindrical non-rotating body. In addition, the contact 13a may be, for example, a non-rotating body (for example, a spherical member or a needle-shaped member) or a rotating body (for example, a cylindrical roller or a spherical roller) formed in a shape other than a cylindrical shape.

The distance meter 13 is in contact with the end surface Gb at a position different from the position where the second pin 12 contacts the end surface Gb. In this embodiment, the distance meter 13 is in contact with the end surface Gb between the position where the second pin 12 contacts the end surface Gb and the position where the end surface Gb and the end surface Gc intersect.

Like the distance meter 13, the calibration distance meter 14 is also a contact type distance meter (for example, a dial gauge) including a contact 14a and a spindle 14b. The contact 14a is in contact with the end surface Gb, and the spindle 14b holds the contact 14a to be able to advance and retreat in the Y direction.

The calibration distance meter 14 is in contact with the end surface Gb at a position different from the position where the second pin 12 and the distance meter 13 contact the end surface Gb. In this embodiment, the correction distance meter 14 is in contact with the end surface Gb between the position where the second pin 12 contacts the end surface Gb and the position where the distance meter 13 contacts the end surface Gb.

The distance meter 13 and the distance meter 14 are held to be movable in the Y direction by a holding mechanism (for example, a sliding mechanism). Thereby, when measuring other shape data than the perpendicular angle of the glass plate G, the distance meter 13 and the distance meter 14 can be retracted to the position which does not become an obstacle. In addition, when the size of the glass plate G is changed, the positions of the distance meter 13 and the distance meter 14 can be easily adjusted.

(Mounting fixture) As shown in FIG. 1, the glass plate measuring device 1 includes a mounting jig 15 that supports the glass plate G from below as a structure for mounting the glass plate G on the mounting portion 2x of the table 2. The mounting jig 15 is a ladder-shaped member including an opening 15a through which the protrusion 2a, the protrusion 2b, and the protrusion 2c of the table 2 can be inserted. After replacing the glass plate G from the mounting jig 15 on the protruding strip portion 2a, the protruding strip portion 2b, and the protruding portion 2c, the placing jig 15 is placed on the table 2. Furthermore, as long as the protruding strip portion 2a, the protruding strip portion 2b, and/or the protrusion portion 2c do not interfere with the mounting jig 15, they may be provided outside the opening 15a in addition to the inside of the opening 15a. The mounting jig 15 may be, for example, a lattice-shaped member or the like, and it may adopt any shape including an opening through which the protruding strip portion 2a, the protruding strip portion 2b, and the protrusion portion 2c can be inserted.

Next, the glass plate measurement method using the glass plate measurement apparatus 1 comprised as mentioned above is demonstrated.

The glass plate measurement method of this embodiment sequentially includes: a preparation step, placing the glass plate G on the placing portion 2x of the table 2; a straightness measuring step, measuring the straightness of the end surface of the glass plate G; and a size measuring step, The vertical and horizontal dimensions of the glass plate G are measured; and the right angle measurement step is to measure the right angle of the end face of the glass plate G. Furthermore, for example, the order of these steps after the preparation step may be changed in the order of the size measurement step, the straightness measurement step, and the right angle measurement step.

(Preparatory steps) As shown in FIG. 5, in the preparation step, first, the glass plate G is carried to the upper position of the table 2 in a state where it has been placed on the mounting jig 15 (a state indicated by a dotted chain line in the figure). Next, the mounting jig 15 is lowered from this state, and the protruding portion 2a, the protruding portion 2b, and the protrusion (spherical roller) 2c of the mounting portion 2x of the table 2 are inserted through the opening 15a of the mounting jig 15 . In this process, the glass plate G that has been placed on the mounting jig 15 is lifted upward from the ridge portion 2a, the ridge portion 2b, and the protrusion 2c, and the glass plate G is replaced on the ridge portion by the mounting jig 15 2a, the protruding part 2b and the protruding part 2c. In addition, the mounting jig 15 is lower than the protrusion part 2a, the protrusion part 2b, and the protrusion part 2c in the state which has been mounted on the table 2. Therefore, after the glass plate G is exchanged from the mounting jig 15 on the ridge portion 2a, the ridge portion 2b, and the protrusion 2c, the mounting jig 15 can be placed on the table 2 and stored.

(Steps for measuring straightness) As shown in FIG. 6, in the straightness measurement step, first, the positioning of the glass plate G supported by the placing portion 2x is performed. In this embodiment, the glass plate G is positioned so that one end in the X direction and the other end in the X direction of the end surface Ga of the glass plate G come to a predetermined reference position. Specifically, at the first position P1 and the second position P2 for measuring both ends in the X direction of the end face Ga, the displacement from the reference position measured by the distance meter 3 becomes zero. G for positioning. In this positioning operation of the glass plate G, when the distance meter 3 is moved between the first position P1 and the second position P2, in order to prevent the loss of the contact 3a of the distance meter 3, it is preferably set to The contact 3a has been retracted from the end surface Ga of the glass plate G. Next, in a state where the glass plate G is positioned, the weight 16 is placed on the glass plate G so as not to move the glass plate G. After that, while confirming the position with the ruler 4e, the holding mechanism 4 moves the distance meter 3 a predetermined distance in the X direction each time, and the straightness of the end surface Ga of the glass plate G is measured. Furthermore, the weight 16 is removed from the glass plate G at the stage where the straightness measurement step has ended.

As shown in FIG. 7, in this embodiment, the weight 16 placed on the glass plate G is arranged near the end surface Ga of the glass plate G along the end surface Ga (that is, the ruler 5). On the table 2, a support member 17 is arranged near the end surface Ga of the glass plate G. The support member 17 extends along the end surface Ga (that is, the ruler 5) and supports the weight 16 with the glass plate G interposed therebetween. This prevents the vicinity of the end face Ga of the glass plate G for measuring the straightness from bending downward due to the load of the weight 16.

Furthermore, in the step of measuring the straightness, it is preferable to remove the pin 7, the pin 8, the pin 11, and the pin 12 from the table 2, and to set the size meter 9, the size meter 10, the distance meter 13, and the distance meter Calculate 14 Evacuate to a position where it does not become an obstacle. As the evacuation method of the dimension measuring instrument 9, the dimension measuring instrument 10, the distance measuring instrument 13, and the distance measuring instrument 14, for example, each of the dimension measuring instrument 9, the dimension measuring instrument 10, the distance measuring instrument 13, and the distance measuring instrument 14 may be used The method of retreating the entirety to the retracted position, or the method of retracting only the contact 9a, the contact 10a, the contact 13a, and the contact 14a to the retracted position (the state of FIG. 6), etc.

As shown in FIG. 8, the contact 3a of the distance meter 3 is a cylindrical roller, which rotates while contacting the end surface Ga of the glass plate G. If set in this way, as the contact 3a rotates, the part of the contact 3a that is in contact with the end surface Ga of the glass plate G sequentially changes, so the wear of the contact 3a can be suppressed. In addition, since the contact 3a is cylindrical, even when the end surface Ga of the glass plate G is inclined, the displacement of the most protruding part of the end surface Ga is always measured. Therefore, the measurement error of the straightness measured by the distance meter 3 becomes small. In addition, the rotation axis of the contact 3a and the thickness direction (Z direction) of the glass plate G are substantially parallel.

As shown in Figure 6, the ruler 5 is used as a reference to determine the position of the distance meter 3 in the Y direction. Therefore, the displacement (straightness) of the end surface Ga of the glass plate G measured by the distance meter 3 is affected by the ruler 5. The effect of straightness. Therefore, the difference (S1-S2) between the measured straightness S1 of the end face Ga of the glass plate G and the straightness S2 of the known ruler 5 is recorded as the final straightness of the end face Ga of the glass plate G.

Furthermore, after measuring the straightness of the end surface Ga of the glass plate G, it is preferable to measure the end surface Ga of the glass plate G again with the distance meter 3 at the position P1, and the position P2, and to confirm whether there is a position shift of the glass plate G. That is, if the displacement from the reference position measured by the distance meter 3 at both the position P1 and the position P2 is zero, it can be confirmed that the glass plate G has no positional deviation before and after the measurement.

The above illustrates the case of measuring the straightness of the end face Ga of the glass plate G, but it is preferable to measure the straightness of each of the four end faces Ga to the end face Gd of the glass plate G. In this case, after measuring the straightness of the end surface Ga of the glass plate G, use the mounting jig 15 or other components to change the direction of the glass plate G relative to the table 2 and measure the remaining end surface Gb by the same procedure ~ The straightness of the end face Gd. If the straightness of each of the four end faces Ga to the end face Gd of the glass plate G is measured, for example, in the end face processing step included in the manufacturing step of the glass plate G, the straightness of each end face Ga to the end face Gd of the glass plate G can be determined. To adjust the position of the processing tool accurately. Therefore, it is easy to process each end surface Ga-the end surface Gd of the glass plate G with a fixed polishing amount. Furthermore, this method of adjusting the position of the processing tool according to the straightness can also be applied to the case of performing constant pressure polishing.

(Steps for size measurement) As shown in FIG. 9, in the size measurement step, first, the first pin 7 and the second pin 8 are brought into contact with the end face Ga and the end face Gc of the glass plate G, and the glass plate G supported by the mounting portion 2x is positioned. In this state, the dimension measuring gauge 9, the contact 9a, and the contact 10a of the dimension measuring gauge 10 are brought into contact with the end surface Gb and the end surface Gd of the glass plate G, and the X direction dimension and the Y direction dimension of the glass plate G are measured. The contact 9a and the contact 10a of the dimension measuring meter 9, the dimension measuring meter 10 are cylindrical, so similar to the contact 3a of the distance meter 3, measure the most protruding part of the end surface Gb and the end surface Gd of the glass plate G position.

The X-direction and Y-direction dimensions of the glass plate G can be measured simultaneously or separately. In the case of separate measurement, for example, the first pin 7 is brought into contact with the end surface Gc of the glass plate G, and the X-direction dimension of the glass plate G is measured by the first dimension measuring meter 9, and then the first pin 7 and the first dimension are released The measuring meter 9 is in contact with the glass plate G, and the second pin 8 is brought into contact with the end surface Ga of the glass plate G, and the dimension of the glass plate G in the Y direction is measured by the second dimension measuring meter 10.

In addition, in the present embodiment, the X-direction size and the Y-direction size are measured at two locations, respectively, but the number of sets of the pin and the size meter facing the same can be appropriately changed. That is, the size in the X direction and the size in the Y direction may be measured at only one location, or the size in the X direction and the Y direction may be measured at three or more locations.

In the size measurement step, it is preferable to evacuate the distance meter 3, the distance meter 13, and the distance meter 14 to a position where they do not become obstacles. As a method of retreating the distance meter 3, the distance meter 13, and the distance meter 14, for example, a method of retreating the entire distance meter 3, the distance meter 13, and the distance meter 14 to the escape position. Or a method of retreating only the contact 3a, the contact 13a, and the contact 14a to the retracted position (the state of FIG. 9).

(Steps for measuring the right angle) As shown in FIG. 10, in the right angle measurement step, first, the first pin 11 and the second pin 12 are brought into contact with the end surface Gb and the end surface Gc of the glass plate G, and the glass plate G supported by the mounting portion 2x is positioned. In this state, the contact 13a of the distance meter 13 is brought into contact with the end face Gb of the glass plate G, and the displacement (the displacement in the Y direction) of the end face Gb from the reference position is measured. Since the contact 13a of the distance meter 13 is cylindrical, similarly to the contact 3a of the distance meter 3, the position of the most protruding part of the end surface Ga of the glass plate G is measured.

The displacement measured by the distance meter 13 is converted into the inclination of the end surface Gb with respect to the vertical surface of the end surface Gc, and this inclination represents a right angle. As shown in FIG. 11, the inclination (right angle) of the end surface Gb with respect to the vertical surface of the end surface Gc is, for example, a displacement M in the Y direction from the position where the end surface Gc and the end surface Gb intersect to the position where the end surface Gb and the end surface Gb intersect (=d1×d3/d2), or the angle θ formed by the vertical surface of the end surface Gc and the end surface Gb (=tan ^-1 (d1/d2)). Here, d1 is the displacement in the Y direction that has been measured by the distance meter 13, d2 is the known distance in the X direction between the distance meter 13 and the second pin 12, and d3 is the known X direction of the glass plate G Dimensions (design values). For example, an arithmetic device may be used to automatically calculate the inclination of the end face Gb relative to the vertical plane of the end face Gc based on the displacement measured by the distance meter 13, or it may be prepared in advance to convert the displacement measured by the distance meter 13 into an inclination The inclination of the end surface Gb with respect to the vertical surface of the end surface Gc is read from the conversion table of the degree.

By measuring the vertical angle in this way and managing the vertical angle of the manufactured glass plate G, for example, it is possible to prevent the alignment of the glass plate G in various steps including processing, cleaning, and inspection (including steps at the place of delivery). Positioning).

The above exemplified the case of measuring the right angle of the end face of the glass plate G that intersects at the corner G1, but it is also possible to measure the straightness of the end face of the glass plate G that intersects at each of the four corners G1 to G4. All angles are measured. In this case, after measuring the right angle of the end face of the glass plate G that intersects at the corner G1, use the mounting jig 15 or other components to change the direction of the glass plate G relative to the table 2 and use the same The program measures the right angles of the end faces intersecting at the remaining corners G2 to G4.

Furthermore, in the right angle measurement step, it is preferable to remove the pin 7 and the pin 8 from the table 2, and to retract the distance meter 3, the distance meter 14 and the dimension meter 9, and the dimension meter 10 until they do not become The location of the obstacle. As a method of retreating the distance meter 3, the distance meter 14, the size meter 9, and the size meter 10, for example, each of the distance meter 3, the distance meter 14, the size meter 9, and the size meter 10 can be used. The method of retreating the entirety to the retracted position, or the method of retreating only the contact 3a, the contact 9a, the contact 10a, and the contact 14a to the retracted position (the state of FIG. 10).

(Calibration steps) Before the preparation step, the glass plate measurement method of this embodiment further includes: a first calibration step of calibrating the size meter 9 and the size meter 10 used in the size measurement step; and a second calibration step of correcting the right angle The distance meter 13 used in the measurement is calibrated. These calibration steps may be implemented every time the glass plate G is measured, or may be implemented after the glass plate G is measured for a predetermined number of times or for a predetermined time. In addition, it can also be implemented when the dimension of the glass plate G of a measurement object changes. Of course, only the first calibration step may be implemented, or only the second calibration step may be implemented.

As shown in FIGS. 12 and 13, in the first calibration step, the first calibration jig 18 in the shape of a rod is used to calibrate the first dimension measuring gauge 9, and the second calibration jig 19 in the shape of a rod is used to calibrate the second dimension measuring instrument. 10 Make corrections. In FIG. 12, the solid line shows the state of calibrating the first dimension measuring gauge 9 using the first calibration jig 18, and the one-dot chain line shows the state of calibrating the second dimension measuring meter 10 using the second calibration jig 19. In addition, the calibration of the first dimension measuring instrument 9 and the calibration of the second dimension measuring instrument 10 are performed separately.

The lengths of the first calibration jig 18 and the second calibration jig 19 are known. In this embodiment, the length of the first calibration jig 18 is set as the reference size (design size) of the X-direction size of the glass plate G, and the length of the second calibration jig 19 is set as the reference size of the Y-direction size of the glass plate G Size (design size). Furthermore, it is preferable to perform the calibration of the calibration jig 18 and the calibration jig 19 themselves on a regular basis (for example, about once a year).

When calibrating the first dimension measuring gauge 9, one end of the first calibration jig 18 is brought into contact with the first pin 7, and the other end of the first calibration jig 18 is brought into contact with the contact 9 a of the first dimension measuring gauge 9. When calibrating the second dimension measuring gauge 10, one end of the second calibration jig 19 is brought into contact with the second pin 8, and the other end of the second calibration jig 19 is brought into contact with the contact piece 10a of the second dimension measuring gauge 10.

The reference position (for example, the zero point) of the first dimension measuring instrument 9 is corrected to the position where the contact 9a is in contact with the first correction jig 18, and the reference position (for example, the zero point) of the second dimension measuring instrument 10 is corrected to the contact piece 10a and the first correction jig 18 Second, correct the contact position of the jig 19.

In this embodiment, the first dimension meter 9 measures the displacement of the end surface Gd of the glass plate G from the reference position, and the second dimension meter 10 measures the displacement of the end surface Gb of the glass plate G from the reference position. That is, the sum of the reference dimension in each direction and the measured displacement (a negative displacement if shorter than the reference dimension, a positive displacement if longer than the reference dimension) is used as the X-direction dimension and the Y-direction dimension of the glass plate G To record. Therefore, if the reference positions of the dimension measuring gauge 9 and the dimension measuring gauge 10 are corrected as described above, the measurement accuracy of the X-direction dimension and the Y-direction dimension is improved.

The first calibration jig 18 includes a small diameter portion 18a and a large diameter portion 18b having a larger diameter than the small diameter portion 18a. Similarly, the second calibration jig 19 includes a small diameter portion 19a and a large diameter portion 19b having a larger diameter than the small diameter portion 19a. The materials of the small diameter portion 18a, the small diameter portion 19a, the large diameter portion 18b, and the large diameter portion 19b are not particularly limited. However, in this embodiment, the small diameter portion 18a and the small diameter portion 19a are formed of metal, and the large diameter portion 18b , The large diameter portion 19b is formed of rubber.

The table 2 is provided with a first supporting portion 20 supporting the large diameter portion 18 b of the first calibration jig 18 and a second supporting portion 21 supporting the large diameter portion 19 b of the second calibration jig 19. In order to support the cylindrical large-diameter part 18b and the large-diameter part 19b, the upper surface of the support part 20 and the support part 21 is formed with the semi-cylindrical groove|channel. The support part 20 and the support part 21 are used to support the calibration jig 18, the large diameter part 18 b and the large diameter part 19 b of the calibration jig 19, thereby automatically adjusting the height of the calibration jig 18 and the calibration jig 19. Therefore, the calibration work of the dimension measuring instrument 9 and the dimension measuring instrument 10 becomes easy.

The first support portion 20 and the second support portion 21 are lower than the mounting portion 2x of the table 2, that is, the protruding strip portion 2a, the protruding strip portion 2b, and the protruding portion 2c. Thereby, as shown in FIG. 14, when the calibration operation is not performed, these supporting parts 20 and 21 are not in contact with the glass plate G placed on the placing part 2x.

As shown in FIGS. 15 and 16, in the second calibration step, the distance meter 13 is calibrated using a calibration jig (for example, a square) 22 and a calibration distance meter 14 that the calibration jig (for example, a square) 22 It has a first guarantee surface 22a and a second guarantee surface 22b that can contact the first pin 11 and the second pin 12 and form a right angle with each other. The calibration distance meter 14 has made the first guarantee surface 22a contact the first guarantee surface 22a. In the state of the pin 11, the displacement of the position of the second guarantee surface 22b from the reference position is measured. In addition, it is preferable to perform the calibration of the calibration jig 22 itself on a regular basis (for example, about once a year).

It is very difficult to accurately set the calibration jig 22 when calibrating the distance meter 13, and the operation requires skill. Therefore, with the first guarantee surface 22a of the calibration jig 22 in contact with the pair of first pins 11, the distance meter 13 and the calibration distance meter related to the second guarantee surface 22b of the calibration jig 22 are confirmed. While the values of the gauge 14 are the same, the correction jig 22 is moved toward the second pin 12 side (Y direction). With this setting, the second securing surface 22b of the calibration jig 22 can be brought into contact with the second pin 12 while the calibration jig 22 is maintained in the correct posture. As a result, the calibration jig 22 can be installed simply and accurately. Furthermore, if the distance meter 13 measures the position of the second guarantee surface 22b of the calibration jig 22 thus installed and corrects the reference position (zero point), the distance meter 13 can be accurately calibrated.

Furthermore, it is preferable to retract the distance meter 14 for calibration to a position where it does not contact the end surface Gb of the glass plate G after the second calibration step is completed. If set in this way, when the end surface Gb of the glass plate G is measured by the distance meter 13, the distance meter 14 for calibration will not become an obstacle to the distance meter 13 in the measurement. At this time, in addition to evacuating the calibration distance meter 14 by the above-mentioned method, the calibration distance meter 14 may be removed from the table 2 and evacuated.

Here, the glass plate measurement method of this embodiment is implemented in a glass plate manufacturing process, for example. The glass plate manufacturing step includes: a forming step to shape the glass plate; a cutting step to cut the formed glass plate to a predetermined size; and an end surface processing step to perform finishing processing such as chamfering on the cut end surface of the glass plate . The glass plate measurement method is implemented after the cutting step and/or the end surface processing step, for example. In this case, one or more glass plates are taken from the glass plates in the manufacturing process as the measurement samples of the glass plate measurement method. Furthermore, the extracted glass plate (measurement sample) is discarded after measuring the shape data, and is reused as a glass cullet, for example.

As described above, according to the glass plate measuring device 1 of this embodiment, it is possible to simply and reliably measure the shape data of the glass plate G including the straightness of the end surface, the vertical and horizontal dimensions, and the right angle of the end surface without using high-level image processing. . In addition, since all the shape data of the glass plate G can be measured on the mounting part 2x, space saving can be achieved. Furthermore, since the glass plate G is supported by the convex strip part 2a, the convex strip part 2b, and the protrusion part 2c, even when the glass plate G has a large size, the positioning can be realized easily and at low cost.

In addition, the present invention is not limited to the above-mentioned embodiments at all, and can be implemented in various forms within the scope not departing from the gist of the present invention.

In the above-mentioned embodiment, the case where the placement portion 2x of the table 2 includes the ridge portion 2a, the ridge portion 2b, and the protrusion 2c including the spherical roller has been described, but the placement portion 2x has no structure It is specifically limited, and it may be a structure including only any one of the convex line part 2a, the convex line part 2b, and the protrusion part 2c.

In the above-mentioned embodiment, the case where the straightness of the end face of the glass plate G is intermittently measured at a plurality of locations on the end face has been described, but it may be continuously measured on the end face. Similarly, the case where the size of the glass plate G is measured at two locations on one end surface is described. However, the size of the glass plate G can also be measured at one location on the end surface, or it can be measured at three or more locations or continuously along the end surface. Determination.

In the above-mentioned embodiment, the case of measuring the straightness, the size, and the right angle as the shape data of the glass plate G has been described, but the shape data is not limited to this. For example, the shape data may only be a straight angle, or may include straightness or size in addition to the straight angle. In addition, other data such as the thickness or warpage of the glass plate G may also be included.

In the above-mentioned embodiment, the distance meter 3, the distance meter 13, the distance meter 14 or the size meter 9, the size meter 10 may also be optical (for example, a laser distance meter) or other non-contact measurement. Distance meter.

1: Glass plate measuring device 2: table 2x: Placement part 2a: The first rib 2b: second rib 2c: Protruding part (spherical roller) 2aa: bottom 2ab: upper 3: Distance meter (for measuring straightness) 3a, 9a, 10a, 13a, 14a: contacts 3b, 9b, 10b, 13b, 14b: spindle 4: keep the organization 4a, 4c: rail 4b: First platform 4d: second platform 4e: feet 5: Straightedge 5a: Guide slot 6: Profiling mechanism 6a: pressing member 6b: spring 6c: Roll 7: The first pin (for size measurement) (pin) 8: The second pin (for size measurement) (pin) 9: The first size tester (size tester) 10: The second size tester (size tester) 11: The first pin (for measuring the right angle) (pin) 12: The second pin (for measuring the right angle) (pin) 13: Distance meter (for measuring straight angle) 14: Distance meter for calibration (distance meter) 15: Mounting fixture 15a: opening 16: heavy objects 17: Supporting components 18: The first calibration fixture (for size measurement) 18a, 19a: Small diameter part 18b, 19b: Large diameter part 19: The second calibration fixture (for size measurement) 20: First Support Department 21: Second Support Department 22: Fixture for calibration (for measuring straight angle) 22a: The first guarantee 22b: The second guarantee surface d1, M: displacement d2: X direction distance d3: X direction size (design value) G: Glass plate Ga, Gd: end face Gc: end face (first end face) Gb: end face (second end face) G1～G4: corner F: The first position adjustment mechanism Fa: First rail Fb: first sliding part P1: First position (position) P2: second position (position) S: Second position adjustment mechanism Sa: second rail Sb: second sliding part θ: Angle X, Y, Z: direction

Fig. 1 is a plan view showing a glass plate measuring device according to an embodiment of the present invention. Fig. 2 is a cross-sectional view in the short-side direction of the first ridge portion. Fig. 3A is a cross-sectional view in the short-side direction showing a modification of the first ridge portion. Fig. 3B is a cross-sectional view in the short-side direction showing a modification of the first ridge portion. Fig. 3C is a cross-sectional view in the short-side direction showing a modification of the first ridge portion. 3D is a cross-sectional view in the short-side direction showing a modification example of the first ridge portion. Fig. 4 is a cross-sectional view taken along the line A-A in Fig. 1 and is a cross-sectional view showing an example of the contact state between the ruler and the roller of the profiling mechanism. Fig. 5 is a B-B cross-sectional view of Fig. 1 and is a diagram showing a preparation procedure for placing a glass plate on a table using a placing jig. 6 is a plan view of the glass plate measuring device according to the embodiment of the present invention, and is a diagram showing the straightness measurement procedure for measuring the straightness of the end face of the glass plate. Fig. 7 is a perspective view showing a state in which a heavy object is supported by a supporting member via a glass plate in the straightness measurement step of Fig. 6. 8 is a cross-sectional view showing an example of the contact state between the contact of the distance meter and the end surface of the glass plate in the straightness measurement step of FIG. 6. Fig. 9 is a plan view of the glass plate measuring device according to the embodiment of the present invention, and is a diagram showing a size measurement procedure for measuring the size of the glass plate. Fig. 10 is a plan view of the glass plate measuring device according to the embodiment of the present invention, and is a diagram showing a right angle measurement procedure for measuring the right angle of the glass plate. FIG. 11 is a schematic diagram for explaining a method of obtaining a right angle from a measurement value of a distance meter in the right angle measuring step of FIG. 10. FIG. 12 is a plan view of the glass plate measuring device according to the embodiment of the present invention, and is a diagram showing the first calibration step of calibrating the size meter using a calibration jig. Fig. 13 is a cross-sectional view taken along the line D-D of Fig. 12, and is a diagram showing an arrangement form of a calibration jig in a calibration step. Fig. 14 is a C-C cross-sectional view of Fig. 12 and a diagram showing the positional relationship between the support portion of the calibration jig and the glass plate in the height direction. 15 is a plan view of the glass plate measuring apparatus according to the embodiment of the present invention, and is a schematic diagram showing the initial state of the second calibration step of calibrating the distance meter using the calibration jig. 16 is a plan view of the glass plate measuring apparatus according to the embodiment of the present invention, and is a schematic diagram showing the final state of the second calibration step of calibrating the distance meter using a calibration jig.

1: Glass plate measuring device

2: table

2x: Placement part

2a: The first rib

2b: second rib

2c: Protruding part (spherical roller)

3: Distance meter (for measuring straightness)

3a, 9a, 10a, 13a, 14a: contacts

3b, 9b, 10b, 13b, 14b: spindle

4: keep the organization

4a, 4c: rail

4b: First platform

4d: second platform

4e: feet

5: Straightedge

6: Profiling mechanism

6a: pressing member

6b: spring

6c: Roll

7: The first pin (for size measurement) (pin)

8: The second pin (for size measurement) (pin)

9: The first size tester (size tester)

10: The second size tester (size tester)

11: The first pin (for measuring the right angle) (pin)

12: The second pin (for measuring the right angle) (pin)

13: Distance meter (for measuring straight angle)

14: Distance meter for calibration (distance meter)

15: Mounting fixture

15a: opening

17: Supporting components

20: First Support Department

21: Second Support Department

G: Glass plate

Ga, Gd: end face

Gc: end face (first end face)

Gb: end face (second end face)

G1~G4: corner

F: The first position adjustment mechanism

Fa: First rail

Fb: first sliding part

S: Second position adjustment mechanism

Sa: second rail

Sb: second sliding part

X, Y: direction

Claims (5)

A glass plate measuring device is a glass plate measuring device for measuring the right angles of the first end surface and the second end surface of a rectangular glass plate that intersect at the corners, and is characterized by comprising: A table with a placing part for placing the glass plate; The first pin is in contact with the first end surface; A second pin in contact with the second end surface; and A distance meter for measuring the glass plate positioned on the mounting portion by the first pin and the second pin to be at right angles to the first end surface and the second end surface The displacement of the actual position of the second end surface at the reference position where the second end surface is located. The glass plate measuring device according to claim 1, wherein the distance meter is between a position where the second pin contacts the second end surface and a position where the second end surface crosses the first end surface, The displacement of the position of the second end surface from the reference position is measured. The glass plate measuring device according to claim 1 or 2, which for calibrating the distance meter includes: The calibration jig has a first guarantee surface and a second guarantee surface that can contact the first pin and the second pin and form a right angle with each other; The distance meter for calibration measures the position of the second guarantee surface together with the distance meter in a state where the first guarantee surface has been brought into contact with the first pin. The glass plate measuring device according to claim 3, wherein the correction distance meter is configured to be retractable from the second end surface of the glass plate. A method for manufacturing a glass plate, comprising a measuring step of measuring the right angles of a first end surface and a second end surface intersecting at a corner of a rectangular glass plate, the method for manufacturing the glass plate is characterized by: The measuring step includes the following steps: using the measuring device according to any one of claims 1 to 4, measuring the displacement of the position of the second end surface from the reference position; and based on the measured The displacement is a step of calculating the inclination of the second end surface representing the right angle with respect to the first end surface.

Images