JPH0868603A - Measuring apparatus - Google Patents

Abstract

PURPOSE: To provide a measuring apparatus for a window pane, which has a feature that its measuring time is fast as an advantage of a contact-type measuring apparatus, which can be attached or removed easily with reference to various inspection types and whose economical effect is large. CONSTITUTION: A measuring apparatus is constituted of an L-shaped member 4 constituted of a mounting plate 2 which is fixed and bonded to a frame and of a cutout member 3 which is coupled at right angles to the plate 2 and in which a fitting hole and a groove hole having a width smaller than the hole have been made. The measuring apparatus is constituted also of a measuring member 5 in which a lock cylinder 7, having a lock plate 72 at the tip, whose casing is fitted partly to the fitting hole is fixed and bonded to a board 6 and in which the board 6 is provided with a sensor 8 for a curved pane. In a state that a part of the casing for the lock cylinder 7 has been fitted to the fitting hole, the cutout member 3 is sandwiched between, and bonded by, the board 6 for the measuring member 5 and the lock plate 72 .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sensor attachment / detachment device for measuring curvature, duffing and the like of curved glass used in window glass for automobiles having a three-dimensional curved shape.

[0002]

2. Description of the Related Art As a flat glass for window glass for automobiles and the like, curved glass having a considerably complicated three-dimensional curved surface is generally used due to aerodynamic and design requirements. However, it is necessary to accurately manufacture not only the size of such a glass, but also the curvature of the peripheral portion of the glass for accurately mounting the glass in the opening of the automobile, and the debris that is the degree of curvature.

Conventionally, as a method of measuring the curvature of curved glass, the curved glass is placed on a reference inspection mold accurately manufactured to have a desired shape, and the gap between the reference inspection mold and the curved glass at a plurality of points in the peripheral portion is measured. It is carried out by, specifically, besides the method of manually measuring with a taper gauge,
A method of measuring with a displacement sensor such as a potentiometer as shown in JP-A-55-89708, a method of measuring with a displacement sensor through a release wire as shown in JP-A-61-47510, and an actual method. 63-9
A contact method such as a method in which a displacement sensor such as a gauge sensor is brought into contact with curved glass as shown in Japanese Patent No. 6406 to measure is proposed.
No. 08 is configured so that the potentiometer can be attached and detached, but since it is a device that attaches and detaches with a screw, not only does it take a long time to attach and detach, but the screwing tends to be insufficient and measurement errors easily occur. is there.

Japanese Patent Laid-Open No. 61-47510 is also removable, but it is necessary to provide a release wire of 1 to several meters at each measurement point in the standard inspection type, which hinders the work and requires an extra space. In addition to this, this method measures the displacement of the release wire, so the measurement accuracy is poor.

Further, there is a risk of damaging the object,
It is unavoidable to wear the movable parts such as the parts that come into contact with each other, and more recently, it has been demanded to inspect at an angle for mounting in an automobile, etc., and in many cases, the inspection mold is considerably inclined depending on the mounting angle of the window glass, Moreover, the number of vehicles that inspect the lower part of the window glass without clamping the upper part is increasing, but when placing curved glass on such an inspection mold and measuring the curvature by the contact method, The contact type displacement sensor is applied with an upward pressing force (strictly right angle to the curved glass) by a spring so that it can contact the curved glass, but its spring constant is the same as that of conventional potentiometers and differential transformers. It is more than 5g / mm,
Since the pressing force in the upward direction is strong, there is a drawback that the glass floats and accurate measurement cannot be performed.

The present invention has been made in view of the above points, and has a feature that the contact type is advantageous in that the measurement time is short, and that it can be easily attached to and detached from various inspection types.
Therefore, the economic effect is large, and when measuring the curvature, if a differential transformer is used as a displacement sensor, the glass can be accurately measured without being lifted, and the curved glass is not damaged. An object of the present invention is to provide a device for measuring the curvature, debris, etc. of curved glass.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a mounting plate fixed to a frame and a notch which is connected at an angle perpendicular to the plate and which has a fitting hole and a slot hole having a width smaller than the fitting hole are formed. An L-shaped member composed of a member,
With a lock plate at the tip, the casing is a lock cylinder part of which fits in the fitting hole is fixed to the substrate, and the substrate is composed of a measuring member equipped with a sensor for curved glass, It is characterized in that the notch member is sandwiched between the base plate of the measurement member and the lock plate in a state where a part of the casing of the lock cylinder is fitted in the fitting hole, and the sensor is in contact with the lock member. The sensor can measure the curvature of the curved glass, or the sensor can measure the doublet of the curved glass as a non-contact sensor. In the case of a contact sensor, a differential transformer can be used. In some cases, it is preferable to use an ultrasonic sensor.

[0008]

A small L-shaped member is attached to a frame such as a standard inspection die, and a measurement member is attached to and detached from the L-shaped member to use an expensive measurement member even if the inspection die is changed. Therefore, it is not necessary to prepare a measuring member for each inspection die, which has a large economic effect. Furthermore, this attachment / detachment requires the rod portion of the lock cylinder to be fitted through the slot of the L-shaped member when attaching. After that, the measuring device is lowered to fit the casing part of the lock cylinder lower than the base plate into the fitting hole, and in this state, the lock cylinder is operated (the rod is shortened) to fit the part of the lock cylinder casing into the fitting part. With the cutout member sandwiched between the measuring member substrate and the lock plate in the state of being fitted in the dowel hole, it can be mounted with one touch, and when removed, the lock shield The locker is operated in the opposite direction to separate the lock plate from the notch member to release the clamp, and then a part of the lock cylinder casing is pulled out upward from the fitting hole to remove the lock cylinder rod part. Can be easily removed through the slot of the L-shaped member.

When a conventional potentiometer or the like is used as a displacement sensor when measuring the curvature of curved glass, the slider is brought into contact with the resistor to move, so the spring force for automatic return is strong, The spring constant must be 5 g / mm or more, but when a differential transformer is used as the displacement sensor, the core for the differential transformer is only partially formed on the shaft as shown in Fig. 2. However, since the only contact points are the upper and lower bearings, there is little resistance for movement, and the spring constant is about 0.5g / mm to 1.5g / mm, which is around 1g / mm. As a result, it is possible to prevent the glass from rising when measuring the curvature of curved glass, and it is possible to measure accurately, and by making the spring constant much smaller, it is possible to reduce the impact on the glass. The reduced as much as possible, it is possible to prevent damage to the glass.

Further, by using the differential transformer as the displacement sensor, there is almost no measurement error, and the measurement accuracy can be improved.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. 1 to 3 are perspective views showing a part of a curvature measuring device according to a first embodiment of the present invention, a partial perspective view showing a state in which the curvature measuring device is removed, and a sectional structure view of a displacement sensor, respectively. FIG. 7 is a perspective view showing a part of the debris measuring device according to the second embodiment.

Example 1 A case where a displacement sensor using a differential transformer is used as a sensor to measure the curvature of curved glass will be described.

As shown in FIGS. 1 and 2, a reference inspection die 1 is connected to a mounting plate 2 fixed to a frame at an angle orthogonal to the plate, and a fitting hole 3 ₁ and a smaller hole than this hole. An L-shaped member 4 composed of a groove hole 3 ₂ having a width and a notch member 3 having a locking pin hole 3 ₃ is attached at each measurement point.

The measuring member 5 is a lock cylinder on the substrate 6.
7. Displacement sensor using differential transformer 8. Lifting series
The rod 7₁Tip of
Lock plate 7₂The lock cylinder 7 having
The casing of the L-shaped member 4 fitting hole 3₁Slightly larger
The displacement sensor 8 formed with a different diameter and fixed to the substrate 6
Upper housing 8 as shown in FIG.₁And lower housing 8
₂Sub housing 8 ₃Linked by these ha
The upper bearing is the center of the housing 8_FourAnd lower bearing 8_FiveThrough
Then axis 8₆Is inserted, and the core 8 is attached to a part of this shaft.₇
The differential transformer is formed in the upper housing around the axis
Coil 8₈(Indicated without distinguishing the primary coil and the secondary coil
Mounted on the shaft in the lower housing.
Stopper 8₉Is the compression spring 8_TenUsually upwards
Pressed. That is, when the shaft is pressed upward
Has become. Compression spring of displacement sensor with such structure
In the present invention, the compressive force, that is, the spring constant is 1 g / mm
The later range of 0.5 g / mm to 1.5 g / mm
And the tip contactor 8₁₁Part is heat resistant resin, eg
For example, Teflon (trade name of DuPont) is coated,
Axis 8₆The second substrate 10 is fixed below the
Rod 9 of the lifting cylinder 9 fixed to the substrate 10 of
₁Operation (expansion and contraction) of the
The moving plate 12 that moves downward is fixed below the displacement sensor.
It Support 1 which is the frame of the inspection type 1 for reference₁To
Lock a plurality of L-shaped members 4 and lock cylinder
Rod of seven₁The notch part 3₂part
Then insert the lock cylinder casing into the hole
7₁Attach the lock pin (not shown) to the lock pin hole 3₃Mated to
And activate the lock cylinder 7 (rod 7₁To
(Shortened), the cutout member 3 to the substrate 6 and the lock plate 7₂
By sandwiching from above and below by
Attach it to the inspection type.

The output of the secondary coil of the differential transformer of the displacement sensor is input to a personal computer or the like via an amplifier, an A / D converter, etc. not shown. To describe the procedure for measuring the curvature using such measuring apparatus, first, the lifting cylinder 9, in a state of lowering the contact 8 ₁₁ of the displacement sensor, bending furnace such as press furnace vehicle 3 A flat glass (curved glass) 13 curved into a dimensional curved surface is placed on the reference inspection mold 1, positioned by a stopper (not shown), and the lower side of the curved glass is held by a clamp or the like. Then, the lifting cylinder 9 is operated to move the displacement sensor 8
When the shaft 8 _{6 of} is moved upward, the pressing force of the displacement sensor on the spring is released, so that the compression force of the spring acts upward, and as a result, the contact 8 ₁₁ abuts the curved glass 13,
The voltage signal generated according to the displacement amount of the contact at that time is amplified by the amplifier, converted into a digital amount by the A / D converter and input to a personal computer or the like, the clearance amount is calculated, and is within a predetermined range. It may be determined whether or not, and if it exceeds a predetermined range, an alarm may be issued.

These measurements are performed simultaneously on multiple measurement points.
Since it can be performed on the
It can be done in a short time, depending on the operating time of the duster.
When the measurement is complete and you want to use another reference test type,
The lock cylinder 9 is operated in reverse, and the cutout member 3
From the lock plate 7₂By separating
Undress and then part of the lock cylinder casing
The fitting hole 3 ₁From the lock cylinder
Rod 7₁Is the slot 3 of the L-shaped member 4 ₂Easy through
L-shaped part on the notch member provided on the other standard inspection mold.
Attach materials to measure the curvature of flat glass of different types
Can be

Example 2 With reference to FIG. 4, a case where the sensor is a non-contact type ultrasonic sensor and a doublet of curved glass is measured will be exemplified.

An L-shaped member 4 composed of a mounting plate 2 and a notch member 3 similar to that of the first embodiment is mounted on the frame 1 ₁ in the substantially central portion of the reference inspection mold 1. The measuring member 5 has a structure in which a lock cylinder 7, an ultrasonic sensor 14 and the like are incorporated in a substrate 6, and the lock cylinder 7 having a lock plate 7 ₂ at the tip of a rod has its casing fitted into a fitting hole 3 _{1 of} an L-shaped member 4. It is formed to have a slightly larger diameter, and an ultrasonic sensor 14 is fixed to the substrate 6 instead of the displacement sensor. Such a measuring member 5 is attached to the L-shaped member 4 by the same method as in the first embodiment. When mounted, the depth of the deepest bent portion of the curved glass can be measured.

Although the preferred embodiments have been described above, the present invention is not limited to these, and various applications are possible. The sensor that measures curved glass uses a contact type, and when measuring curvature, it is preferable because a displacement sensor that uses a differential transformer can measure with high accuracy, but other than that, a displacement sensor that uses a potentiometer is also preferable. Various sensors can be used. When a non-contact type sensor is used, the second embodiment is used.
As shown in Fig. 2, curved glass doublet can be measured with an ultrasonic sensor, etc., but in addition to this, it is also possible to use an optical sensor to detect the tip of the plate glass with a plate glass plate line etc. It can be applied.

It is preferable that the locking pin of the measuring member is fitted into the locking pin hole formed in the notch member because it acts as a rotation stop and the L-shaped member is set accurately, but it is preferable. This is not always necessary when the casing is formed not in a circular (cylindrical) cross section but in an elliptical or square cross section.

[0021]

According to the measuring device of the present invention, it is extremely easy to attach and detach, and the economic effect is great, and when a differential transformer is used as a displacement sensor when measuring curvature, the glass is not raised. It can be accurately measured, and without raising the curved glass so that it does not have a bad effect such as damage to the curved glass,
Accurate measurement is possible, and almost no impact is given to the glass, and the curved glass is not damaged, and the measurement can be performed quickly.

[Brief description of drawings]

FIG. 1 is a perspective view showing a part of a curvature measuring apparatus according to a first embodiment of the present invention.

FIG. 2 is a partial perspective view showing a state in which the curvature measuring device according to the first embodiment is removed.

FIG. 3 is a cross-sectional structure diagram showing a displacement sensor in Example 1.

FIG. 4 is a perspective view showing a portion of a curved glass debris measuring device according to a second embodiment of the present invention.

[Explanation of symbols]

1 reference test type 2 mounting plate 3 cutout member 3 ₁ fitting hole 3 ₂ slot 3 ₃ locking pin hole 4 L-shaped member 5 measuring member 6 substrate 7 lock cylinder 7 ₁ rod 7 ₂ lock plate 8 displacement sensor 9 Lifting cylinder 10 Second substrate 11 Guide rod 12 Operating plate 13 Curved glass

Claims (4)

[Claims] 1. An L-shaped member comprising a mounting plate fixed to a frame, and an engaging member connected at an angle orthogonal to the plate, and having a fitting hole and a notch member having a slot having a width smaller than the fitting hole. A measuring member having a lock plate at a tip thereof, the casing of which has a lock cylinder partly fitted in the fitting hole fixed to a substrate, and the substrate having a sensor for curved glass. A detachable measuring device, wherein a notch member is sandwiched between a base plate of the measuring member and a lock plate in a state where a part of the casing of the lock cylinder is fitted in the fitting hole. 2. The measuring device according to claim 1, wherein the sensor is a contact type sensor, and the curvature of the curved glass is measured. 3. The measuring device according to claim 2, wherein a differential transformer is used as the sensor. 4. The measuring device according to claim 1, wherein the sensor is a non-contact type sensor, and is adapted to measure a double of curved glass.