JPS6290836A - Device for processing panel - Google Patents

Abstract

PURPOSE:To improve production efficiency by installing a device for detecting the level difference of the shadow mask during the coating of its inner surface and removing a defective combination of a panel and a shadow mask slantingly attached to the panel without stopping the flow of the process. CONSTITUTION:A detection station 30 is installed between a shadow mask attachment device 20 and a station for the next processing. It is provided with a device 34 for detecting the level difference of a shadow mask 2 which consists of three limit switches 31-33. When a defective combination of a panel 1 and a shadow mask 2 is found by detecting the level difference between three different points on the surface of the shadow mask 2 resulting from its slanting, the defective combination is sent to a given place by means of panel transfer device, thereby removing the defective combination without stopping the overall flow of the process.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a panel that automatically attaches a shadow mask to a panel, etc. in the manufacturing process of a color picture tube, and is equipped with a device that detects the attachment state of the shadow mask. This relates to processing equipment.

[Conventional technology]

In the manufacturing process of color picture tubes, a photoresist is applied to the inner surface of the panel, exposed through a shadow mask to form a resist film, and then a black matrix film, fluorescent film, emulsion film, etc. are applied. Multiple application steps are required. In these multiple coating steps, the respective predetermined operations are performed one after another without delay, and during this period, the panel and shadow mask are frequently repeatedly attached and detached. When automating these coating processes, it goes without saying that it is necessary to continuously flow the workpieces one after another, but in this case, if the flow stops due to a problem, how quickly can the flow be restored? is an important issue in increasing production efficiency. In addition, related devices of this type include, for example, the Japanese Patent Publication No.
No. 26655, Special Publication No. 1972-26177, Special Publication No. 1971
-45474, Japanese Patent Publication No. 59-35494, etc.

[Problem that the invention seeks to solve]

By the way, when attaching the shadow mask to the panel using the shadow mask attaching device in the above process, it may not be possible to completely attach the shadow mask to the panel due to variations in dimensions between the panel and the shadow mask. In other words, a so-called 2-pin mounting condition occurs in which the shadow mask is fitted with only two panel pins for a panel that has three or more panel pins, and the shadow mask is tilted and protrudes from the panel sealing surface without fitting with other panel pins. In some cases, the shadow mask interferes with the shadow mask mounting device, panel conveyance device, etc., resulting in problems such as stopping the flow and damaging the device. Also, there are similar drawbacks even when one pin is installed.

[Means for solving problems]

The present invention has been made in view of the above circumstances, and it is possible to improve production efficiency by detecting and processing without stopping the overall flow when a shadow mask cannot be completely attached to a panel using a shadow mask attaching device. The object of the present invention is to provide a panel processing device that can be improved.

[Effect]

The shadow mask height difference detection device can detect incorrect attachment of the shadow mask and prevent damage to the device itself, the shadow mask, and the panel.

〔Example〕

The present invention will be explained in detail below with reference to embodiments shown in the drawings.

If the shadow mask attachment device does not attach the shadow mask to the panel at all, the shadow mask remains in the shadow mask attachment device and can be easily detected, so there is no particular problem.6 The object of the present invention is to attach the shadow mask to the panel When installed, under normal conditions, the shadow mask 2 is attached to the three panel pins 3 and 4 of the panel 1, as shown in FIG.
゜5 and is installed horizontally, whereas in some cases, as shown in Figures 2 to 4, it is an example of so-called 2-pin installation, in which only two panel pins are connected and no other pins are connected. This is a case where the product is not properly installed.

Figure 2 shows the case where the shadow mask 2 is attached with pins 3 and 4, Figure 3 shows the case where it is attached with pins 3 and 5, and Figure 4 shows the case where it is attached with pins 4 and 5. show. Shadow mask 2 to panel 1 like this
When the shadow mask 2 is mounted with two pins, the shadow mask 2 is not horizontal but is tilted, and a height difference is created on the lower surface, so that a part of the shadow mask 2 protrudes from the panel seal surface 6. When the panel 1 and shadow mask 2 in such a state are transported to the processing station for the next process by the panel transport device 10 shown in FIGS. 5 and 6 and processed, they may interfere with these devices and cause flow problems. This may cause problems such as stopping or damaging the equipment.

Therefore, in the embodiment of the present invention, a detection station 30 is provided between the shadow mask mounting device 20 and the next process processing station, and the detection station 30 is provided with a shadow mask 2 consisting of three limit switches 31, 32, and 33. A height difference detection device 34 is provided, and the shadow mask 2
Detects the difference in height of the surface at three different points due to the inclination of
If there is an inconvenient combination of panel 1 and shadow mask 2, it can be transported to a predetermined location using a panel transfer bag (not shown), removed, and treated without stopping the overall flow. There is. Further, guides 11 and 12 having tapered portions 11a and 12a at their ends are provided between the shadow mask mounting device 20 and the next stage detection station 30, and the panel 1 and the shadow mask 2 are connected to the panel conveyance device 10. When the shadow mask 2 is transported by the guides 11 and 12, it is pushed up to the next detection station 30.
sent to. The tapered portions 11a and 12a are for preventing the shadow mask 2 from coming off from the panel 1 due to impact during transportation.

The panel conveyor 10 that conveys the panel l uses a shuttle conveyor that moves in the order of raising, moving, and lowering as shown in FIG. Although this is not necessary, it has the disadvantage that the transport cycle of the panel 1 becomes longer. Therefore, it is considered best to shorten the ascending distance and use guides 11 and 12 together.

In the above embodiment, guides 11 and 12 are used to push up the shadow mask, and limit switches 31 and 12 are used to measure the difference in height of the shadow mask at the next detection station.
Although the detection structure was shown in Section 32.33, detection can also be performed using a discharge tube or the like, and similar results can be obtained by using a proximity switch as a shadow mask height difference detection device.

FIGS. 8 and 9 show other embodiments of the apparatus according to the invention using the discharge tube described above. As shown in the figure, the discharge tubes 40, 41, 42, 43 for emitting and receiving light are attached to the lower part of the panel 1 near the panel sealing surface 6 of the shadow mask mounting device @20, and the shadow mask 2 is attached from the panel sealing surface 6. By detecting the protrusion of the panel 1 and the shadow mask 2, an undesirable panel 1 and shadow mask 2 can be detected.

In the above embodiments, panels have been exemplified, but any object may be used as long as it is a concave container. Of course, the panel may be of 4-pin sliding construction. In addition, by applying the present invention to the shadow mask mounting device and the subsequent station rather than the next station, it is possible to detect shadow mask mounting defects that occur slowly.

In the above explanation, the shadow mask height difference detection device is installed between the shadow mask mounting device and the next processing station and in the shadow mask mounting device. It may be provided between the detachment device and the processing station in front of it, or even in the part of the shadow mask detachment device, when the shadow mask is not in the normally attached state at the processing station. but,
Although some processing may be carried out without stopping the flow,
This is because trouble will always occur in the shadow mask detachment device if this device operates for detachment. Therefore, if it is provided in this area, it is desirable to detect and remove it before starting the detachment operation.

It goes without saying that these shadow mask height difference detection devices may be provided at one or more locations.

〔Effect of the invention〕

As is clear from the above description, one aspect of the present invention is that by providing a shadow mask height difference detection device on the inner surface of a panel during the coating process, the shadow mask is not completely attached to the panel by the shadow mask attaching device. If the shadow mask is attached to the panel at an angle, the difference in height between the top and bottom of the shadow mask can be detected and removed during the process, making it possible to deal with it without stopping the flow. Therefore, even if a shadow mask attachment failure occurs, it can be automatically dealt with without stopping the flow, and there is no interference between the shadow mask and various devices, making it possible to significantly improve production efficiency.

[Brief explanation of drawings]

Figure 1 is a plan view of the shadow mask attached to the panel, and Figures 2, 3, and 4 show the shadow mask of Figure 1 fitted with only two pins on the panel and installed at an angle. 5 is a plan view showing an embodiment of the apparatus according to the present invention, FIG. 6 is a front view thereof, No. 71511 is a front explanatory view showing the general operation of the panel conveying device, and No. 8 The figure is a perspective view of one embodiment of the shadow mask mounting device according to the present invention, and FIG. 9 is a front view of FIG. 8. 1...Panel, 2...Shadow mask, 3°4.5
... Parnepin, 1o... Panel conveyance device, 11.
DESCRIPTION OF SYMBOLS 12... Guide, 20... Shadow mask attachment device, 30... Detection station, 34... Height difference detection device, 40-43... Discharge/i? . Agent: Patent attorney Katsuo Ogawa ゛・、? 2 Figure 6--Ha″ kiln-11,/■

Claims (1)

[Claims] 1. A panel processing device including a shadow mask mounting device for mounting a shadow mask on a panel, a processing station for processing the panel surface, a shadow mask detachment device, and a panel conveying device. Shadow mask height difference detection that detects the height difference of the shadow mask between the mounting device and the next processing station, or between the shadow mask mounting device, or between the shadow mask detachment device and the previous processing station, or the shadow mask detachment device. A panel processing device characterized by being equipped with a device. 2. The panel processing apparatus according to claim 1, wherein the shadow mask height difference detection device comprises a plurality of limit switches or proximity switches.