JPH09250987A - Inspection system for glass article for cathode-ray tube and its device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase efficiency of inspection by carrying a glass article with a conveyer, and, after inspection with the first inspecting part provided on the middle of conveyer, reversing with a reversing device, and further inspecting with the second inspecting part, so that carrying in/out from the inspecting part is automatically performed and attitude of the sample article is rapidly changed. SOLUTION: A glass article 2 is carried with a carrying conveyer 1, and branched/ distributed to an A line system or a B line system with a branching part 3, and carried to the first inspecting part 5 with a conveyer 4. After inspection, reversed with a reversing device 6, and the reversed article 2 is inspected with the second inspecting part 7. The reversed article 2 whose inspection is finished is carried with a reversing conveyer 8, and reversed with another reversing device 9, for restoring to the original attitude, for restoration to the origin. The article 2 whose attitude is restored is carried with a conveyer 10. Relating to the article 2 classified into non-defectives and defectives by inspection with the inspecting parts 5 and 7, the non-defective glass article 2 is carried to a packaging part 12 through a conveyer 11, and the defective glass article 2 is moved to a conveyer 14 with a defectives ejecting robot arm.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an inspection system and an inspection apparatus for glass articles for cathode ray tubes. More specifically, glass articles for cathode ray tubes, which inspect for defects such as glass panels of cathode ray tubes, face surfaces such as funnels, surfaces of side surfaces and seal edges, inner surfaces and inside (in the thickness direction), dents, defective transmission characteristics, etc. Inspection system and inspection device.

[0002]

2. Description of the Related Art Glass panels, funnels, etc. for cathode ray tubes are manufactured after manufacturing to determine whether or not they are suitable for use. Inspection for defects such as characteristic defects is performed.

Conventionally, for example, the inspection of the glass panel 60 for a cathode ray tube shown in FIG. 9 has been performed as follows.
First, the operator at the inspection position manually lifts the glass panel 60 on the conveyor and carries it onto the inspection table 65 shown in FIG.

Next, the glass panel 60 is irradiated with a lamp 66 provided on the inspection table 65 to perform a visual inspection. (A) shows a face surface transmission inspection, (B) shows a face surface reflection inspection, and (C) shows a seal edge surface reflection, a face inner surface reflection and a side surface reflection and transmission characteristic inspection. At this time, holding the glass panel 60 by hand, as shown in FIGS. 10A to 10C, the eye position E is changed, the glass panel is inverted, the position, the angle, and the posture are changed, and the transmitted light, Alternatively, the seal edge 60 of the glass panel 60 can be seen while visually observing the reflected light.
a, defects such as scratches, dents, and poor transparency on the surfaces of the face surface 60b and the side surface 60c, the inner surface and the inside are found.

[0005]

However, in the above-mentioned inspection, the glass panel 60 is carried in and out of the inspection table 65 by a worker, and the inspection is also performed by the glass panel 60.
It is difficult to change or move easily and quickly because it is turned over and the position, angle and posture are changed, and the detection rate is lowered and the cost is increased due to an increase in personnel. In particular, when the glass panel 60 is large, it is heavy and difficult to support manually, and it is not efficient.

Further, conventionally, three kinds of inspections of the face surface, the side surface, the surface of the seal edge, the inner surface, and the inside of the glass panel 60 are carried out at one position, but if it is advanced efficiently, the three positions are made. An inspection device is required for each part.

The present invention has been made in view of the above-mentioned drawbacks of the prior art. In the inspection, the glass articles are automatically carried in and out of the inspection section, and the attitude of the glass articles to be inspected is determined. Change quickly to improve the efficiency of the inspection,
An object of the present invention is to provide an inspection system and an inspection apparatus for CRT glass articles, which enables inspection without feeling the weight of glass articles even in the case of ultra-large glass articles, and improves inspection efficiency by centralizing by reducing inspection positions. And

[0008]

In order to achieve the above object, the present invention provides a conveyor for conveying glass articles, a first inspection section for inspecting glass articles provided in the middle of the conveyor, and the glass articles are inverted. It is characterized by comprising a reversing device and a second inspection unit for inspecting the reversed glass article.

In a preferred aspect of the present invention, a reversing conveyor for conveying the reversed glass article is provided on the downstream side of the second inspection section, and a reversing device for returning the reversed glass article to the original posture is provided. And a conveyor for transporting the returned glass article.

According to another preferred aspect of the present invention, the first inspection section is provided with a tiltable support member that allows the glass article to be inspected to be tilted.

In another preferred aspect of the present invention, the first inspecting unit comprises a lower lamp provided on a lower side of a glass article to be inspected and irradiating the glass article, and a lower lamp when inspecting by irradiating the upper lamp. And a shielding plate for covering.

A second aspect of the present invention is, in an inspection apparatus, a tiltable support member for inclining a glass article to be inspected, a lower lamp provided on the lower side of the glass article and irradiating the glass article, and an upper lamp. And a shielding plate that covers the lower lamp when the inspection is performed by the irradiation of the.

In a preferred aspect of the second invention, in the inspection device, a vacuum chuck for adsorbing a glass article to be inspected, and a universal joint for making a supporting disc supporting the vacuum chuck capable of rolling and tilting are provided. It is provided with a rolling and tilting support mechanism including a spring for returning to a horizontal state and a cylinder for raising and lowering the rolling and tilting support mechanism.

In the present invention, a conveyor for conveying glass articles, a first inspection section provided in the middle of the conveyor for inspecting the glass articles, a reversing device for reversing the glass articles, and a second for inspecting the reversed glass articles. Since the glass article to be inspected is automatically carried into and out of the first and second inspecting sections, the seal edge of the glass article, the surface of the face and the side surface, the inner surface and the internal scratch, Defects such as dents and poor transparency can be inspected.

In the present invention, a reversing conveyor for conveying the reversed glass article to the downstream side of the second inspection section, another reversing device for returning the reversed glass article to the original posture, and the original posture. Since it has a conveyor for conveying glass articles, the glass articles inspected by the second inspection section are automatically inverted by the reversing device to return to the original posture, and for example, the conveyors for conveying to the packing section are good glass articles. Are transported to the packing section.

Further, in the present invention, since the first inspecting section is provided with the tiltable supporting member for inclining the glass article to be inspected, even if the glass article is heavy, the desired posture desired by the worker is desired. The glass articles can be changed quickly, the detection rate is improved, and the number of workers is reduced.

Further, in the present invention, the first inspection unit is provided on a lower side of a glass article to be inspected, and a shield plate for irradiating the glass article and a shielding plate for covering the lower lamp when inspecting by irradiation of the upper lamp. Since the above is provided, when the glass article is inspected by the upper lamp, the interference of light by the lower lamp is avoided and it becomes easy to see.

In the second invention, the inspecting apparatus comprises a tiltable support member for inclining a glass article to be inspected, a lower lamp provided on the lower side of the glass article and irradiating the glass article, and an upper lamp. Since it is equipped with a shielding plate that covers the lower lamp when inspecting it by irradiating the same, even if the glass article is heavy, the glass article can be swiftly changed to a desired posture, and when the glass article is inspected by the upper lamp, The interference of light due to is blocked, the inspection becomes efficient, and the inspection can be performed accurately and smoothly.

In the second aspect of the invention, the inspection apparatus returns the vacuum chuck for adsorbing the glass article to be inspected, the universal joint that allows the supporting disc supporting the vacuum chuck to roll and tilt, and the glass article to the horizontal state. Since a rolling tilting support mechanism including a spring and a cylinder for raising and lowering the rolling tilting support mechanism are provided, a glass article to be inspected by a vacuum chuck can be securely attracted and held, and a heavy glass panel, for example, in a reversed state can be used. Even if there is, the rolling and tilting support mechanism can quickly change the glass article to a desired inspection posture, and the efficiency of inspection can be improved.

[0020]

1 is a schematic view of the entire system of an embodiment of an inspection system for glass articles for cathode ray tubes (panel glass) according to the present invention.

The inspection system for glass articles for cathode ray tubes according to the present invention comprises a conveyor 1 for conveying glass articles 2,
A branching unit 3 for branching the conveyor 1 into an A-line system conveyor 4 and a B-line system conveyor 4, and a first inspection unit 5 for inspecting a glass article 2 provided in the middle of each of the conveyors 4 branched by the branching unit 3. A reversing device 6 for reversing the glass article 2, a second inspection section 7 for inspecting the reversed glass article 2, a reversing conveyor 8 for conveying the reversed glass article 2 after the inspection, and a glass article 2 Other reversing device 9 for returning the glass article to the original posture, a conveyor 10 for conveying the glass article 2 returned to the original posture, and a glass article that is a good product and a defective product by the inspection of the first inspection unit 5 and the second inspection unit 7. Conveyor 11 that conveys the good glass article 2 classified into 2 to the packing unit 12
And a defective article discharge robot arm 13 for transferring the defective glass article 2 from the conveyor 10 to the conveyor 14.

The conveyor 1 is constituted by a roller conveyor, and the sealing edge 60a of the glass panel 60 (glass article 2) for the cathode ray tube is made the lower surface, and is supported by the roller 61 as shown in FIG. Transport to part 3.

At the branching section 3, the conveyed glass articles 2 are conveyed to the A line system conveyor 4 and the B line system conveyor 4.
Distribute to.

The A-line system conveyor 4 and the B-line system conveyor 4 perform substantially the same operation, and each of the conveyors 4 has rollers provided at predetermined intervals, like the conveyor 1. .

In the middle of each conveyor 4 of the A line system and the B line system, there is provided a first inspection section 5 for inspecting the conveyed glass article 2 in a state in which the seal edge is directed downward.

3 to 5 show the first inspection section 5. First
The inspection unit 5 includes a tiltable support member 20 that supports and inclines the glass article 2 to be inspected, and a small roller 15 that is in the frame body 16 fixed to the support material 20 and that conveys the glass article 2. , The glass article 2 installed on the lower side of the glass article 2
A lower lamp 17 composed of a fluorescent tube for irradiating the glass article, an upper lamp (not shown) composed of dimming illumination for irradiating the glass article 2 installed on the upper side of the glass article 2, and a lower lamp when irradiating the upper lamp for inspection. And a shielding plate 25 that covers the lamp 17.

The tiltable support member 20 has a shaft (X axis) provided on a column 21 fixed to a base 22 as shown in FIG.
A cylinder 23, which is rotatably supported by 19 and is provided between the base 22 and the support member 20 via a shaft 24, is driven in the up-down direction (arrow C), and the axis (X-axis) 19 is used as a rotation axis. The glass article 2 is rotated in the D direction to tilt and support the glass article 2 at a desired angle.

The supporting member 20 has an inclination angle of about 30 ° in the front-rear direction, and the supporting member 20 covers the entire base 22 by X.
It may be able to rotate around the Y-axis, which is perpendicular to the axis.
It may be rotatable about a Z axis perpendicular to the axis and the Y axis.

As shown in FIG. 4, the mechanism of the shield plate 25 includes a cylinder 26 fixed to the frame 16 and a cylinder 26.
Link arm 27 fixed to a rod of the link 2 and a link 2 rotatably attached to the link arm 27 via a shaft 28.
9 and a shield plate 25 rotatably attached to the link 29 via a shaft 30.

The shield plate 25 is made of a light absorbing material (a material that does not reflect) having a dark surface, and when the link arm 27 is pushed out in the direction of arrow E by the driving of the cylinder 26, the link 29 uses the shaft 28 as a rotating shaft. It rotates in the direction of arrow F, and the shield plate 25 opens vertically as shown by arrow G. This shield 25
Is a mechanical shutter system, but may be an electrical system using a liquid crystal shutter.

The glass article 2 is inspected by the lower lamp 17 by opening the shielding plate 25 to expose the lower lamp 17 between the small rollers 15 on both sides and irradiating the lower lamp 17 for inspection. Thus, the face surface transmission characteristic inspection of the glass panel is performed. At this time, since the glass panel is mounted on the support member 20, the inspector does not
You don't have to support the weight of.

When inspecting the glass article 2 with the upper lamp (face surface reflection inspection), the cylinder 26 of FIG. 4 is driven to return the link arm 27 in the direction opposite to the arrow E direction, and the shielding plate 25 is closed. The lower lamp 17 is covered and the light interference by the lower lamp 17 is blocked. This is because, when the face surface reflection characteristic inspection of the glass article 2 is performed with the upper lamp, even if the lower lamp 17 is turned off, the white lamp makes it difficult to see the reflected light of the upper lamp.

FIG. 6 shows a reversing device 6 for reversing the glass article 2 that has been inspected by the first inspection section 5. Reversing device 6
Is provided slidably on an elevating table 40 for elevating and lowering the glass article 2 conveyed by the conveyor 4 by driving a cylinder 41 fixed to the base 22 and a guide rail 31 provided on the upper side of the glass article 2. Mounted on a slider 32 and a cylinder 34 fixed to the slider 32, and for reversing drive mounted between left and right support plates 36 that move up and down by its drive, and pulleys provided above and below the support plate 36. It is composed of a belt 37 and a vacuum chuck 39 attached to an inversion plate 38 provided below the inside of the support plate 36.

The cylinder 41 of the reversing device 6 drives the elevating table 40 to raise the glass article 2 conveyed by the conveyor 4, and the vacuum attached to the inside of each supporting plate 36 supported by the slider 32 on the upper side. Adsorbed by the chuck 39 (see FIG.
(B)) Next, the reversal drive belt 37 is driven to rotate the reversal plate 38 (FIG. 6C), and the reversal plate 38 is reversed so that the seal edge 60a of the glass article 2 is the upper surface. The width between both support plates 36 can be changed by a cylinder provided between both support plates 36 according to the size of the glass article 2. After reversing, the cylinder 33 attached to the slider 32 is driven to move the slider 32 along the guide rail 31,
The glass article 2 is conveyed to the second inspection unit 7.

FIG. 7 shows a second inspection section for inspecting the inverted glass article 2.

The second inspection section 7 vacuum-sucks the inverted glass article 2 to be inspected and rolls and tilts it to bring it into a desired inspection posture. An upper cylinder 50 for raising and lowering the rolling and tilting support mechanism 42 and a lower cylinder 52 for raising and lowering a base 51 of the upper cylinder 50 are provided. In addition, the second inspection unit 7 is provided with the glass article 2 in the inverted state after the inspection is completed.
A traverser 53 for transporting the paper is provided so as to be movable in the vertical direction in the drawing.

The rolling and tilting support mechanism 42 includes a support plate 44 for supporting the glass article 2 to be inspected, a vacuum chuck 43 for adsorbing the supported glass article 2, and a support disk 45 for supporting the vacuum chuck 43. Other supporting disc 49
A horizontal joint of a universal joint 46 and a glass article 2 which are ball joints that allow the glass article 2 provided between the support disk 45 and another support disk 49 to roll and tilt in the directions M and J. It is composed of a rod 47 to which a biasing force of a spring 48 for returning the state is applied. The rod 47 to which the biasing force of the spring 48 is applied is
It is provided in three places at intervals of 120 ° with respect to 9. The rods 47 may be provided at four places at 90 ° intervals.

The traverser 53 is provided on the left and right supporting members 54 fixed to the base 22 via guide rails, and conveys the glass article 2 from the second inspection position to the adjacent reversing device 9 (see FIG. 1). That is, the reversing conveyor 8 in FIG. 1 is configured to include this traverser 53.

An upper cylinder 50 that raises and lowers the rolling and tilting support mechanism 42 in the direction of arrow K is supported on a base 51, and a lower cylinder 52 that raises and lowers the base 51 as shown by arrow L is a base on the floor. It is fixed on the table 22.

The inspection in the second inspection section 7 is carried out by setting the conveyed inverted glass article 2 on the rolling and tilting support mechanism 42. At this time, first, the lower cylinder 52 and the upper cylinder 50 are both raised to receive the inverted glass article 2 conveyed by the reversing device 6 (FIGS. 1 and 6),
The inverted glass article 2 to be inspected is supported on the support plate 44 of the rolling and tilting support mechanism 42, and is sucked by the vacuum chuck 43 so as not to slip down when tilted.

Next, the upper cylinder 50 is lowered to bring the height to the inspection position. That is, it is lowered to a position where the worker can easily see it.
Since the universal disc 46 is provided between the supporting disc 45 supporting the glass article 2 and the other supporting disc 49,
The supported glass article 2 is tilted at an arbitrary angle in the XY plane and is rotatable about the Z axis. Also,
Since the rod 47 to which the biasing force of the spring 48 is applied is provided between the support circular plate 45 and the other support circular plate 49, the glass article 2 is returned to the horizontal state by the biasing force of the spring 48. Has become.

Although not shown, lamps for irradiating the glass article are provided above and at the sides of the glass article 2 to be inspected. The worker manually puts the glass article 2 at the inspection position.
Each part is inspected by irradiating the light of the lamp while inclining or rotating and seeing the reflected light of the inner surface and the seal edge of the glass article 2 and the transmitted light of the side surface. When the hand is released, the glass article 2 returns to the horizontal state due to the urging force of the spring 48.

Also during this inspection, the above-mentioned first inspection unit 5
Similar to the inspection in 1., the operator does not need to support the weight of the glass article 2 but merely changes the angle, posture, rotational position, etc. with a light force. When the inspection is completed, the lower cylinder 52 that is rising is also lowered. As a result, the glass article 2 is lowered (arrow P in FIG. 8) and is received by the traverser 53.

FIG. 8 shows a reversing conveyor 8 which conveys the glass article 2 in a reversing state. The reversing conveyor 8 conveys the traverser 53 along the guide rails 57, and includes a nut 56 attached to the traverser 53, a ball screw 55 that moves the nut 56 by rotation, and a guide rail 57.

As shown in FIG. 2 (B), the traverser 53 (6
The traverser 53 supporting the glass article 2 in the inverted state supported by 2) is moved in the direction of the arrow Q along the guide rail 57 and is conveyed to another inversion device 9. The reversing device 9 is the same as the reversing device 6, and by this device, the glass article 2 in the reversing state is returned to the original posture so that the sealing edge faces downward, and is conveyed to the conveyor 10.

The non-defective glass article 2 classified into the non-defective article and the defective glass article 2 by the first inspection section 5 and the second inspection section 7 is transferred from the conveyor 10 to the conveyor 11 and conveyed to the packing section 12. (Fig. 1). The defective glass article 2 is
The defective product discharging robot arm 13 transfers the defective product from the conveyor 10 to the conveyor 14 and conveys it to a predetermined place. In this way, the inspection of the glass article 2 is completed.

In the above embodiment, an example of inspecting the panel glass 60 for a cathode ray tube by using the inspection system for glass articles for a cathode ray tube according to the present invention has been described. However, in the case of a funnel glass for a cathode ray tube, the same inspection is performed. You can In this case, first, the funnel glass 70
The seal edge 70a of the above is placed on the lower side as shown in FIG. 2 (C), and is conveyed by the roller 61. In this state, the funnel glass 70 is inspected by the first inspection section 5, and then shown in FIG. 2 (D). As described above, the seal edge 70a of the funnel glass 70 is turned upside down and detected by the second detection unit 7, and after the detection, the inspection is completed by returning to the original posture as in the above embodiment.

[0048]

As described above, according to the present invention, the glass articles are automatically carried in and out of the inspection table at the time of the inspection, and it is not necessary to hold the glass articles, and the glass articles can be tilted with a light force, By operating the rotating hand, the glass article can be easily and quickly put into a desired posture. Therefore, even when inspecting a large glass article, the glass article can be easily and quickly changed to a desired posture without giving a feeling of weight, and the detection efficiency can be improved to reduce the number of workers to improve the inspection efficiency. It also reduces costs.

Further, according to the present invention, since the shielding plate for the lower illumination is installed in the first inspection section, two kinds of inspections are performed at one position without being adversely affected by light interference, and the inspection site The efficiency of inspection is improved by centralization by reduction.

[Brief description of drawings]

FIG. 1 is a schematic top view of an embodiment of an inspection system for glass articles for cathode ray tubes according to the present invention.

FIG. 2 is a schematic side view of various glass articles in a conveyed state in various postures.

FIG. 3 is a side sectional view of a first inspection unit.

FIG. 4 is a partially enlarged view of the mechanism of the shield plate.

FIG. 5 is a top view of the first inspection unit excluding the shield plate.

FIG. 6 is an explanatory view showing an inversion device ((A) is an upper surface,
(B) is the front, (C) is the side).

FIG. 7 is a side sectional view of a second inspection section.

FIG. 8 is a side view of the reverse conveyor.

FIG. 9: Panel glass for CRT (glass article)
FIG.

FIG. 10 is an explanatory diagram showing a conventional inspection state.

[Explanation of symbols]

 1, 4, 10, 11, 14: Conveyor 2: Glass article 3: Branching part 5: First inspection part 6: Inversion device 7: Second inspection part 8: Inversion conveyor 9: Inversion device 12: Packing part 13: No Robot arm for discharging non-defective products 20: Support material 22: Base 25: Shielding plate 42: Rolling and tilting support mechanism 43: Vacuum chuck 44: Support plate 45: Support disk 46: Universal joint 47: Rod 48: Spring 49: Support Disc 50: Upper cylinder 52: Lower cylinder

Claims (6)

[Claims] 1. A conveyor for transporting glass articles, and a first article for inspecting glass articles provided in the middle of the conveyor.
An inspection system for glass articles for cathode ray tubes, comprising: an inspection section, a reversing device for reversing a glass article, and a second inspection section for inspecting the reversed glass article. 2. A reversing conveyor that conveys the reversed glass article is provided downstream of the second inspection unit, and another reversing device that returns the reversed glass article to the original posture is provided to return the original posture to the original posture. The conveyor system which conveys the formed glass article, The inspection system of the glass article for cathode ray tubes of Claim 1 characterized by the above-mentioned. 3. The system for inspecting glass articles for cathode ray tubes according to claim 1, wherein the first inspection section includes a tiltable support member that allows the glass article to be inspected to be tilted. 4. The first inspection unit includes a lower lamp provided below the glass article to be inspected for irradiating the glass article, and a shield plate for covering the lower lamp when inspecting by irradiation of the upper lamp. The inspection system for glass articles for cathode ray tubes according to claim 1, wherein. 5. A tiltable support member for inclining a glass article to be inspected, a lower lamp provided on the lower side of the glass article for irradiating the glass article, and a lower lamp when the inspection is performed by irradiation of the upper lamp. An apparatus for inspecting glass articles for cathode ray tubes, comprising: a shielding plate. 6. A rolling tilt comprising a vacuum chuck for adsorbing a glass article to be inspected, a universal joint capable of rolling and tilting a support disk supporting the vacuum chuck, and a spring for returning the glass article to a horizontal state. An apparatus for inspecting a glass article for a cathode ray tube, comprising: a support mechanism; and a cylinder for raising and lowering the rolling and tilting support mechanism.