JP3133080B2 - Color CRT manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a color cathode ray tube, and more particularly to management and control of panels flowing through a color cathode ray tube production line.

[0002]

2. Description of the Related Art In general, color CRTs are mixed and produced on the same production line.

[0003] The types of color cathode ray tubes are classified in the production series, and further finely classified in the exposure series, and there are a great number of them.

Among them, there are many types of panels, which are also one of the components of a color cathode ray tube, depending on the type of the panel itself and the type of shadow mask to be combined with the panel.

[0005] Therefore, the panel phosphor screen manufacturing process, the panel and the non <br/> suitable positive panel wrong combination of the shadow mask may occur. When this inappropriate positive panel flows out to the downstream of the manufacturing process, cathode ray tubes of different varieties within the specified production lot to customers from being shipped mixed. In order to prevent this beforehand, it is important to manage panels on the production line.

Conventionally, as a method of managing panels on a production line, an operator visually confirms whether or not a panel flowing from an upstream matches displayed contents with a panel manufacturing information display, according to a panel manufacturing information display. Was progressing.

[0007]

However, it is difficult to find a "mask difference" or a "panel glass display difference" by performing a visual inspection as in the prior art. Unsuitable for different types of shadow masks
A primary panel occurs, causing a mismatch between the flow of control information about regular panels on the production line and the actual panel flow on the production line.

[0008] Therefore, unsuitable positive panel to flow out to the downstream of the manufacturing process, problems have occurred affecting the production in the production process.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and eliminates visual confirmation by an operator, and automatically controls the type of panel actually flowing on a production line to control the production line. Accordingly, and aims to provide an apparatus for manufacturing a color CRT capable of preventing the different varieties CRT by flowing out to the downstream process of unsuitable positive panel is contaminated manufactured.

[0010]

SUMMARY OF THE INVENTION The present invention relates to a color cathode ray tube production line , which is exposed to light using a shadow mask.
The mask information indicators generated and attached to the panel itself
A transport device that transports a panel having a panel information index,
Read the mask information indicator panels conveyed by the conveying device
Of transport and the mask information indicator reading apparatus, in the transport device to take
And the panel information indicator reading <br/> winding devices read the panel information indicator for panel, these mask information indicator reader and panel
Judgment of panel type from reading result by information index reading device
Panel type discriminating device and incorrect from the production line
Removal device for removing a panel, and the panel type determination device
And the production line of the color CRT
Collating the control information of the panel through the emission, and a control device for the collation result from the determined unsuitable positive panel that does not match the flow of control information is removed from the production line at the removing device
Is provided .

[0011]

According to the present invention , the panel is transported by the transport device,
Read mask information indicator panel using the clock information indicator reader
With Ri preparative read <br/> panel information indicator panel information indicator reader, automatically determines the panel <br/> Le types from these reading results in panel type determination device, actually flowing the production line in the control device by matching the in which the panel and the control information of the production line, it is determined unsuitable positive panel that does not match the control information, be removed from the production line unsuitable positive panel removal device
You .

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of an embodiment of the present invention will be described below with reference to the drawings.

FIGS. 4 and 5 show a color cathode ray tube panel 1. FIG. There are index regions 3 where the mask information indicator is formed on the short side center and the long side central face 2 of the inner surface of the panel 1, and the left portion of the side surface 4 of one of the short sides, the central portion and On the right side is an index area 5 to which a panel information index is attached.

As shown in FIG. 6, the mask information index includes a register mark 11 having a rectangular hole pattern or a register mark 12 having a round hole pattern.
Information such as the type of shadow mask to be combined with the panel 1 is included. This mark is formed by exposing the black stripe film by exposing the panel 1 with a shadow mask in the panel phosphor film manufacturing process, and is simultaneously formed by exposure with the shadow mask. That is,
The shadow mask itself becomes the exposure original plate for the mark.

As shown in FIG. 7, the panel information index includes a sand blast mark 13 or 14 composed of numerals, alphabets, and other symbols, and includes information such as a production lot, a glass base material, and a design. This mark is engraved on the side surface 4 of the panel 1 by sandblasting when the panel 1 is manufactured.

FIGS. 2 and 3 show a panel phosphor film manufacturing process, for example, after a process of forming a black stripe film is completed (otherwise, after a process of forming a phosphor film, after a process of forming an aluminum vapor deposition film, etc.). FIG. 2) shows a transfer device 21 for transferring the panel 1 to the next manufacturing process.

The panel 1 is determined in the course of transportation by the transportation device 21.
Positioning device 22, mask information to read the mask information index
Index reading device 23 and panel information for reading panel information index
An information indicator reading device 24 is provided.

When the positioning device 22 detects that the panel 1 has reached a predetermined position by the sensor 25, the positioning device 22 sandwiches the four side surfaces of the panel 1 from four directions with the positioning members 26 to perform positioning. The positioning member 26 at least in the moving area of the panel 1 can be moved up and down, and is retracted below the moving area when the panel 1 is transported.

The mask information index reading device 23 is disposed above the moving area of the panel 1 corresponding to each index area 3 where the short side and long side mask information indexes of the panel 1 are formed. The structure of the mask information index reading device 23 is such that a stage 29 is erected on a table 27 via stage driving means 28 which can move in a direction perpendicular to the corresponding side of the panel 1. Is provided with an arm 31 which is moved up and down by a motor 30.
An optical lens barrel 32 is provided, and a CCD camera 33 that reads a mask information index through the optical lens barrel 32 at the upper end of the optical lens barrel 32.
Is provided, and a light projecting device 34 for illuminating the reading position of the panel 1 is provided at the lower end side portion of the optical lens barrel 32.

The panel information index reader 24 reads the left and center panel information index areas 5 (both the left and center portions are read simultaneously) of one short side surface 4 of the panel 1 and the right side. The panel 1 is arranged on the side of the moving area of the panel 1 in correspondence with the index area 5 of the panel information index. The structure of the panel information index reader 24 is
An arm 37 is provided upright on the upper surface of the arm 35 so as to be movable in a direction opposite to the panel 1 by a motor 36, and an optical lens barrel 38 is provided on the front surface of the arm 37. A CCD camera 39 for reading the index is provided. Also, a light emitting device 40 for illuminating the side surface 4 of the panel 1
Are arranged.

FIG. 1 shows a control computer 41 as a control device for controlling a production line in a panel phosphor film manufacturing process. The control computer 41 controls the production line based on a flow of control information such as a type order and a processing order for the panel 1 flowing on the production line. Then, the control computer 41 inputs the discrimination result of the type of the panel 1 from the panel type discriminating device 42 and controls the transport device 21, the positioning device 22, the indexing device 43, the removing device 44, and other devices 45. .

The panel type discriminating device 42 discriminates a panel type to be combined from the mask information index read by each of the reading devices 23 and 24 and the panel information index.

The index attaching device 43 attaches an index to be used in a later manufacturing process for the panel 1 completed in the panel fluorescent film manufacturing process.

The removing device 44 compares the panel type determined by the panel type determining device 42 with the control information of the panel that has performed the determination by the control computer 41, and determines a panel that does not match the flow of the control information. If it is determined that the type, to remove the unsuitable positive panel from the production line.

It should be noted that the other devices 45 generally describe devices related to a control target in a production line of a panel phosphor film manufacturing process other than the above-described devices.

Next, the operation of this embodiment will be described.

In the panel phosphor film manufacturing process, the control computer 41 controls the production line based on the flow of control information such as the type order and the processing order of the panel 1 flowing on the production line.

In the panel phosphor film manufacturing process, for example, after the process of exposing and forming a black stripe film on the inner surface of the panel by incorporating a shadow mask inside the panel 1, a panel type discrimination process is performed.

In this determination step, the sensor 25 detects that the panel 1 conveyed by the conveying device 21 has reached a predetermined position.
, The positioning device 22 operates to position and hold the panel 1 at a predetermined reading position.

With respect to the panel 1 positioned and held,
The mask information index reading device 23 reads the mask information indices formed on the respective index regions 3 on the short side and the long side of the panel 1 by exposure, and the panel information index reading device 24
The panel information index attached to each index area 5 on one short side surface 4 is read.

At the time of this reading, each of the reading devices 23, 24
Control control information panel 1 from the computer 41 is provided, each reading device 23, 24 according to the position of the different index region 3 and 5 by the size of the panel 1 are adjusted respectively. The mask information index reading device 23 includes an optical lens barrel 32,
The movement is adjusted in the direction perpendicular to the corresponding short side or long side of the panel 1 and the movement is adjusted vertically. panel
The information index reading device 24 adjusts the interval between the optical barrel 38 and the panel 1.

After the reading of each index, the positioning of the panel 1 is released and the conveyance by the conveyance device 21 is restarted.

The panel type discriminating device 42 discriminates the panel type combined from the mask information index read by each of the reading devices 23 and 24 and the panel information index, and outputs the panel type to the control computer 41.

The control computer 41 determines whether or not the panel type determination result input from the panel type determination device 42 matches the flow of control information on the production line.

[0035] If the result that there is inadequate positive panel is determined not to match the flow of control information informs the operator, such as by lighting a lamp on the production line.

The control computer 41 is provided with a removing device.
Forcibly remove unsuitable positive panel from the production line by 44, and over the feet back to the production line, is added to the new production line the amount of the panel is removed.

[0037] As described above, it is possible to prevent the improper positive panel is off downstream process, it is possible to prevent the different varieties CRT is mixed production.

[0038]

According to the present invention , a panel is transported by a transport device.
Feed to, read-panel information indicator panel information indicator reader with reading mask information indicator panel in the mask information indicator reading apparatus, panel type determination from these reading results
The panel kinds device automatically identified, by collating the control information of the panel production line is actually flowing the production line in the control device determines unsuitable positive panel <br/> Le does not match the control information , because the you remove unsuitable positive panel from the production line removal device, can abolish the visual confirmation of the worker, different varieties CRT is incorporated produced by efflux into non <br/> suitable positive panel downstream process Can be prevented.

[Brief description of the drawings]

FIG. 1 is a block diagram of a control system showing one embodiment of a color cathode ray tube manufacturing apparatus of the present invention.

FIG. 2 is a perspective view showing a reading step on the production line.

FIG. 3 is a plan view of the transfer device.

FIG. 4 is a front view of the panel.

FIG. 5 is a side view of the panel.

FIG. 6 is an explanatory diagram of a mask information index.

FIG. 7 is an explanatory diagram of a panel information index.

[Explanation of symbols]

1 Panel 21 Conveyor 23 Mask information index reader 24 Panel information index reader 41 Control computer 42 Panel type discriminator 44 Removal device

Claims (1)

(57) [Claims] 1. A method of color cathode-ray tube production line smell
The mask information index exposed and formed by the shadow mask
And a panel information indicator attached to the panel itself
Reading a transport device, the mask information indicator panels conveyed by the conveying device for conveying the panels
Read and mask information indicator reading apparatus, the panel information indicator panel to be conveyed by the conveying device to take
And the panel information indicator reader take, these mask information indicator reader and panel information indicator reading
Panel that determines the panel type from the reading result of the reading device
Type discriminating device and removing device for removing inappropriate panels from the production line
The discrimination result determined by the panel type determination device and the color
Collating the control information of the panel through the production line over CRT, or the production line in the removing apparatus to determine unsuitable positive panel that does not match the flow of control information from the verification result
Apparatus for manufacturing a color cathode-ray tube, characterized in that it comprises a control device for al removed.