JPH08293257A - Method and device for system constituting application seat for cathode-ray tube - Google Patents

Abstract

PURPOSE: To enhance safety and to eliminate input errors by stamping a panel with a kind identification mark during a masking process, reading the mark during a seat-forming process, and replacing the panel with another one using a robot if the kind of the mark does not agree with that of the seat of a pallet. CONSTITUTION: A kind identification mark is stamped on the skirt of a panel 13 using a kind identification mark stamping device for use in a masking process. In the subsequent stabilizing process, the mark is baked and fixed into place. When the panel is placed and positioned on a pallet 11 and fed to a seat-forming process by means of a conveyor 10 for inputting panel to application process, a kind identification device 35 reads the mark, the when the kind agrees with a seat on a pallet seat display 12, the panel is directly fed downstream; when the kind does not agree with a sorting robot 45 operates, replacing the panel with one of the kind which agrees with the seat of a storage rack 46. Therefore, the work of identifying and forming kinds is mechanized for enhanced safety, and input errors due to human errors can be eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for applying a cathode ray tube to a seat.

[0002]

2. Description of the Related Art As shown in FIG. 8, a shadow mask is incorporated into a panel in a mask step 1, the panel is heated and cooled in a stabilizer step 2, and then sent to a coating step 3. In the coating step 3, first, the black matrix coating is formed in the BM step 4, and then in the PH step 5, G is formed.
(Green), B (blue), and R (red) phosphors are applied and formed, and then an aluminum film is vapor-deposited in AL process 6.

By the way, the coating process 3 in the multi-product production line for cathode ray tubes employs a system in which the order of starting products is determined in advance according to the seat. For this reason, when the panel on which the stabilization process 2 has been completed is put into the coating process 3, it is necessary to configure the product types in the order of seats, and the work of the seat configuration process 7 is performed. Due to the work of the seat forming step 7, in the mask step 1, a type discrimination mark such as a character mark representing the type is imprinted on the panel skirt portion. Then, in the seat forming process 7, as shown in FIG. 7, the pallet seat indicator 12 of the pallet 11 which is randomly transported by the coating and feeding conveyor 10 from the stabilizing process 2 and the panel 13 positioned and mounted on the pallet 11. When the operator 14 visually checks the product type discrimination mark of No. 1 and the types of the seat of the pallet seat display 12 and the panel 13 are different from each other, the panel 13 mounted on the panel carriage 15 behind the operator 14 I was replacing it.

Further, a mask process 1 and a stabilizer process 2
The index of each is 30 seconds, and the coating process 3
Each BM process 4, PH process 5, and AL process 6 has an index of 27 seconds. In this way, the index of the coating process 3 is faster than the index of the stabilizing process 2 of the preceding process, so that the stabilizing processes 2 to 1
Even if the panel is flushed with 00%, the starting rate in coating process 3 is 90%.
Not only that, there is a 10% construction loss. In order to reduce the start-up loss, it is necessary to re-inject the defective panel generated in the coating process 3. Now, assuming that the number of panels flowing from the stabilizing process 2 is n1, in the seat configuration process 7, the shortage of construction start n2 in the coating process 3 is input and fixed (K
= N1 + n2) panel must be applied to the coating step 3.

Therefore, conventionally, as shown in FIG. 8, a defective panel generated in the BM process 4, the PH process 5, and the AL process 6 is manually lined out and placed on the panel carriage 15, and the coating film defect A is a seat forming process. It has a system that transports it to position 7 and reloads it. The aluminum film thickness defect B is introduced before the AL process 6, and the material defect C is transported to the inspection process 8. That is, the worker 14 who performs the work of the seat formation process 7 shown in FIG. 7 is also in charge of not only the product type formation work but also the re-insertion of the defective panel.

[0006]

In the above-mentioned prior art, since human beings perform the product type discrimination and product type construction work, an input error due to a human error occurs, and as a result, the equipment operation rate is lowered and the next process of the product with the wrong processing is performed. Is washed away. In addition, since the defective panel cannot be smoothly returned, the work rate will be reduced. Above all, there is concern about the safety problem of manually transporting large glass panels.

A first object of the present invention is to provide a method and apparatus for applying a cathode ray tube to a seat, which is capable of mechanizing the product type discrimination and the product type configuring work to improve the safety and eliminating the mistaken input due to a human error. To provide.

A second object of the present invention is to provide a cathode ray tube coating seat configuration system method and apparatus capable of ensuring a stable high construction rate by establishing a defective return system.

[0009]

A first method of the present invention for achieving the above first object comprises a mask step of incorporating a shadow mask into a panel, and then a stabilizing step of heating and cooling the panel. In the method of manufacturing a cathode ray tube, which comprises a coating step of forming a phosphor and an aluminum film after that, and a seat configuration step of determining a starting product rank order according to seats in advance on the panel before applying the coating step,
In the mask process, the product type identification mark is automatically imprinted on the skirt of the panel by the product type identification mark imprinting device, and the product type identification mark imprinted on the panel in the seat configuration process is automatically read by the product type identification device. If the type of seat on the pallet is different, the sorting robot will automatically replace the corresponding panel on the storage shelf.

A first apparatus of the present invention for achieving the above first object comprises a mask step of incorporating a shadow mask into a panel, a stabilization step of heating and cooling the panel next, and a phosphor and In a cathode ray tube manufacturing apparatus having a coating step of forming an aluminum film and having a seat configuration step of determining a starting product rank order according to seats in a panel before the application step, a panel skirt disposed in the mask step. A type discrimination mark imprinting device that automatically imprints a type discrimination mark on the section, a type discrimination device that is arranged in the seat configuration process and that automatically reads the type discrimination mark impressed on the panel, and a type discrimination device that reads the type discrimination mark. If the seat type of the pallet on which the panel is mounted is different from that of the pallet, the sorting robot that automatically replaces the corresponding panel on the storage shelf Characterized by comprising a preparative.

A second method of the present invention for achieving the above second object is a mask step of incorporating a shadow mask into a panel, a stabilization step of heating and cooling the panel next, and then a phosphor and In a method for manufacturing a cathode ray tube, which comprises a coating step of forming an aluminum film, and which has a seat configuration step of determining a starting product rank order according to seats in a panel prior to the application of the coating step, a phosphor film after the coating step of the coating step is formed. The defective coating film and the defective aluminum film thickness after the aluminum film formation in the coating process are automatically shifted, and the defective panel thus shifted is automatically divided, and the divided coating film defect is subjected to the seat forming process. Automatically returned and returned to the seat configuration process so as to compensate for the shortage of the application process due to the difference in index between the stabilization process and the application process Characterized in that it is turned and automatically controlled the said coating film defects.

A second apparatus of the present invention for achieving the above second object comprises a mask step of incorporating a shadow mask into a panel, a stabilization step of heating and cooling the panel next, and a phosphor and In a cathode ray tube manufacturing apparatus, which comprises a coating step of forming an aluminum film, and which has a seat configuration step of determining a starting product rank order in accordance with seats in a panel before the coating step is put in, a phosphor film after the coating step is formed. A defective coating film shifter circuit provided in a portion for shifting defective coating film; an aluminum film thickness defective shifter circuit provided in a portion after the aluminum film formation in the coating step for shifting defective aluminum film thickness; and the defective coating film shifter. Circuit and a defective return automatic sorting system for classifying defective panels that have been shifted by the aluminum film thickness defective shifter circuit,
Due to the difference in index between the conveyor for returning coating film defects classified by this defect return automatic sorting system to the seat forming process and the conveyor for returning aluminum film thickness defects before the aluminum film forming process, and the stabilizing process and the coating process. In order to make up for the deficiency in the coating process, an automatic control means is provided for introducing the defective coating film returned by the conveyor to the seat forming process.

[0013]

According to the first method and apparatus described above, the type identification mark impressing device imprints the type identification mark on the skirt portion of the panel. This type discrimination mark is baked in the heating furnace in the next stabilizing process, and the solvent is separated and fixed on the panel skirt surface. When the pallet on which this panel is positioned and placed is sent to the seat forming process, first, the type discrimination device reads the type discrimination mark. If the pallet seat and the product type match, the pallet seat is flown downstream. If the pallet seat and the product type do not match, the sorting robot operates and replaces the storage shelf panel. In this way, instead of visual discrimination by the operator, the type discrimination device automatically discriminates, and when the seat and the type are different, the sorting robot performs instead of the panel replacement by the operator,
Product type discrimination and product type construction work are mechanized to improve safety, and it is possible to eliminate input errors due to human error.

According to the second method and apparatus described above, the defective coating film after the phosphor film formation and the defective aluminum film thickness after the aluminum formation are shifted, and the defective coating film and the defective aluminum film thickness are automatically returned to the defective condition. Divided by system. Then, the defective coating film is automatically returned to the seat forming process. Defective aluminum film thickness is automatically returned before the aluminum process. In this case, the physical distribution of the coating film defect to the seat forming process is such that the start of the coating process is insufficient, that is, the sum of the number of panels and the number of panels input from the stabilizing process is constant. Automatically controlled. In this way, the establishment of the defect recovery system ensures a stable high construction rate.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the moving hand part of the BS plate welding process in which the seat setting of the mask process 1 shown in FIG. 6 is made,
A type discriminating mark imprinting device 20 shown in FIG. 2 is provided, and the panel 1 is provided by the type discriminating mark imprinting device 20.
The product type identification mark 21 is imprinted on item 3. FIG. 3 shows the structure of the type discrimination mark imprinting device 20. The stamping device main body 22 includes four stamp core units 23 (23A, 23A).
B, 23C, 23D) are provided slidably. Stamp core unit 23 (23A, 23B, 23C, 2
3D) is composed of a slider 24, a stamp holding member 26 slidably provided on the slider 24 and urged by a spring 25, and a rubber sponge having a high mesh conformity attached to the tip of the stamp holding member 26. Stamp 27 (27A, 27B, 27C, 27D). The slider 24 is attached to the main body 2 of the stamping device.
4 slider drive air cylinders 2 mounted on 2
Eight (28A, 28B, 28C, 28D) actuating rods are coupled and each slider 24 is individually driven. Here, stamp 27 (27A, 27B, 27C, 27D)
Are squares of 19 mm × 19 mm, and are arranged at a pitch of 20 mm. The imprinting device main body 22 is rotatably supported by a support plate 29 and can be swung by a swiveling air cylinder 30.

FIG. 4 shows a type discrimination mark imprinting device 20 on the short side of the skirt portion of the panel 13 shown in FIG.
The pattern for imprinting 1 (21 ⁰ , 21 ¹ , 21 ² , 21 ³ ) is shown. That is, in the case of this embodiment, four stamps 2
Since it has 7 (27A, 27B, 27C, 27D),
Type identification mark patterns 0 to 9 and A to F
A total of 16 different imprint patterns can be created. The ink of the stamp 27 (27A, 27B, 27C, 27D) is
Use lead oxide as the main component and use white paint with high heat resistance. As a result, if a marking mistake occurs,
It can be erased with dilute nitric acid. The type discrimination mark imprinted according to the type is burned in the heating furnace of the stabilizing step 2 shown in FIG. 6, and the solvent is separated and fixed on the panel skirt surface.

As shown in FIG. 1, the panel 13 sent from the stabilizing step 2 with the product type identification mark 21 imprinted thereon is positioned and placed on the pallet 11 and the seat forming step 7 is randomly performed by the application charging conveyor 10. Will be sent to the position. As shown in FIGS. 1 and 5, a product type discrimination device 35 is arranged at the position of the seat formation process 7. The type discriminating device 35 has a slide plate 36 which slides in the direction of the skirt portion of the panel 13 by a driving means (not shown). The slide plate 36 has four type discriminating lines corresponding to the positions of the type discriminating marks 21. The mark reader 37 (37A, 37B, 37C, 37D) is attached. Type identification mark reader 37 (37A, 3
7B, 37C, 37D) are direct reflection type, use a red light that is visible light, have a convex lens on the light projecting side, and are a narrow-field phototube in which the detection focus can be adjusted with the naked eye.

The slide plate 36 is provided with a resin guide 38 which comes into contact with the skirt portion of the panel 13, and the striker 3
9 is provided, and the position of the striker 39 at which the resin guide 38 comes into contact with the panel 13 and stops is the proximity switch 4
It is read as 0.

As shown in FIG. 1, at the position of the seat forming process 7, a sorting robot 45 composed of a multi-joint for 6 axes is used.
Around the sorting robot 45, a plurality of fixed storage shelves 46 for mounting a plurality of (six in the embodiment) panels 13 are arranged in a multi-tiered manner (9 in the embodiment) around the sorting robot 45. is set up. The storage shelves 46 are preliminarily programmed with the types of goods to be loaded and unloaded.

Therefore, in the seat forming step 7, the slide plate 36 slides transversely so that the resin guide 38 comes into contact with the panel 13 and the product type discrimination mark reader 37 (37A, 37A).
(B, 37C, 37D) to read the type discrimination mark 21 and set the stop position of the striker 39 to the proximity switch 4
The data is read at 0 and the size data is also determined. The data and size data of the read type identification mark 21 are
The data is input to a programmable controller (not shown) and the product type data is determined.

Panel 1 for which discrimination of this product type data has been completed
When the pallet 11 on which 3 is placed advances to the next position, the next work is automatically performed. When the pallet seat display 12 matches the pallet seat type, the pallet seat indicator 12 is allowed to flow downstream. If the pallet seat and the product type do not match, the sorting robot 45 operates to first insert the panel 13 on the relevant pallet 11 into a predetermined position on the storage shelf 46, and then match the pallet seat on the pallet seat indicator 12. The relevant product type is taken out from a predetermined storage shelf 46 and loaded on the pallet 11. Even when there is no panel 13 on the pallet 11, the sorting robot 45 operates to load the relevant product on the pallet 11 from the storage rack 46.

As described above, instead of the visual discrimination by the operator, the type discrimination device 35 automatically discriminates. When the seat and the type are different, the sorting robot 45 replaces the panel exchange by the operator. . That is, it is possible to improve the safety by mechanizing the product type discrimination and the product type forming work, and it is possible to eliminate an input error due to a human error.

As shown in FIG. 6, after the seat forming step 7,
The BM process 4, the PH process 5, and the AL process 6 are performed on the panel 13. In this embodiment, after the BM process 4 and PH
After the step 5, coating film defect shifter circuits 50 and 51 that shift the coating film defect A and the material defect C are provided, and after the AL step 6, an aluminum film thickness defect shifter circuit 52 that shifts the aluminum film defect B and the material defect C, and An automatic defect return sorting system 53 is provided for separating the defective coating film A, the defective aluminum film thickness B, and the defective material C. The coating film defect A is returned to the seat construction step 7 by the defect return conveyor 55, the aluminum film thickness defect B is returned to the seat return step 56 before the AL step 6, and the material defect C is returned to the inspection step 8 by the defect return conveyor 57. Each is automatically transported.

Therefore, when the BM process 4 completed product is NG, a defective shifter of coating film defect A or material defect C is set, and similarly when the PH process 5 completed product is NG, the coating film defect A or material is defective. Set the defective C shifter. Then, the panel which is defectively shifted in each of the BM process 4 and the PH process 5 and the panel which is defectively shifted in the aluminum film thickness defect B in the AL process 6 are provided with an automatic defect return sorting system 53 provided at the end of the AL process 6. The coating film defect A, the aluminum film thickness defect B, and the material defect C are classified by. Then, the coating film defect A is automatically returned to the seat forming step 7 by the defect return conveyor 55. The aluminum film thickness defect B is automatically returned by the defect return conveyor 56 before the AL process 6. The material defect C is automatically returned to the inspection process 8 by the defect return conveyor 57. Here, the number n2 of applying the coating film defect A to the seat forming process 7 is set to be the shortage n2 of the start of the applying process 3, that is, the number n1 and the number n2 of panels flowing from the stabilizing process 2. The addition is constant K = n1 + n2
Therefore, the physical distribution of n1 is monitored and the physical distribution of n2 is automatically controlled. In this way, the establishment of the defect recovery system ensures a stable high construction rate.

[0025]

EFFECTS OF THE INVENTION According to the present invention, the product type discrimination and product type configuration work in the coating seat configuration system of the CRT multi-product type production line are mechanized, the product type collation error due to human error can be eliminated, and the safety of the transportation of large spheres can be eliminated. Can be improved. In addition, a stable high start-up rate can be secured by establishing a defect return system.

[Brief description of drawings]

FIG. 1 shows an embodiment of a system for applying a cathode ray tube according to the present invention, in which (a) is a plan view and (b) is a side view.

FIG. 2 is a perspective view showing a state of imprinting by a type discrimination mark imprinting device.

FIG. 3 shows the type discrimination mark stamping device of FIG. 3, (a)
Is a plan view and (b) is a sectional view.

FIG. 4 is an explanatory diagram showing an example of product type discrimination mark pattern classification.

FIG. 5 is a perspective view of a product type discrimination device.

FIG. 6 is a flowchart showing an embodiment of the defect return system of the present invention.

FIG. 7 shows a conventional cathode ray tube coating seat configuration system, in which (a) is a plan view and (b) is a side view.

FIG. 8 is a flowchart of a conventional defect return system.

[Explanation of symbols]

 1 Mask Process 2 Stabilize Process 3 Coating Process 4 BM Process 5 PH Process 6 AL Process 7 Seat Configuration Process 10 Application Loading Conveyor 11 Pallet 12 Pallet Seat Display 13 Panel 20 Product Classification Mark Stamping Device 21 Product Classification Mark 35 Product Classification Device 45 Sorting robot 46 Storage shelf 50, 51 Coating film defective shifter circuit 52 Aluminum film thickness defective shifter circuit 53 Defect recovery automatic sorting system 55, 56, 57 Defect return conveyor A Coating film defect B Aluminum film thickness defect C Material defect

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masatoshi Akiyama 3300 Hayano, Mobara-shi, Chiba Hitachi Chiba Electronics Co., Ltd.

Claims (4)

[Claims] 1. A masking step of incorporating a shadow mask into a panel, a stabilizing step of heating and cooling the panel next, and a coating step of subsequently forming a phosphor and an aluminum film. In a manufacturing method of a cathode ray tube having a seat configuration step of deciding a start product type order on a panel in advance according to seats, in the masking process, a product type identification mark is automatically impressed on a skirt portion of the panel by a type identification mark impressing device, and the seat The product type identification mark impressed on the panel in the configuration process is automatically read by the product type identification device, and if the seat type of the pallet on which the panel is mounted is different from the product type, the sorting robot automatically replaces it with the corresponding panel on the storage shelf. A method for applying a cathode ray tube to a seat. 2. A masking step of incorporating a shadow mask into a panel, a stabilizing step of heating and cooling the panel next, and a coating step of subsequently forming a phosphor and an aluminum film. A manufacturing apparatus for a cathode ray tube having a seat configuration process for determining a start product type order according to seats on a panel, and a product type identification mark stamping device which is disposed in the mask process and automatically stamps a product type identification mark on a skirt portion of the panel. If the type discrimination device arranged in the seat configuration process and automatically reading the type discrimination mark impressed on the panel and the seat on the pallet on which the panel read by this type discrimination device is different, An application seat structure of a cathode ray tube characterized by having a sorting robot that automatically replaces the corresponding panel of the storage shelf System system equipment. 3. A masking step of incorporating a shadow mask into a panel, a stabilizing step of heating and cooling the panel next, and a coating step of subsequently forming a phosphor and an aluminum film. In a manufacturing method of a cathode ray tube having a seat configuration step of deciding the starting product rank order according to seats on a panel, a coating film defect after the phosphor film formation in the coating process and an aluminum film thickness defect after the aluminum film formation in the coating process Automatically, the defective panel that has been shifted is automatically classified, and the defective coating film that has been classified is automatically returned to the seat forming step, and the index difference between the stabilizing step and the coating step is caused. In order to make up for the shortage of the coating process, the defective coating film returned to the seat forming process is automatically controlled and injected. And a coating seat configuration system method for a cathode ray tube. 4. A masking step of incorporating a shadow mask into a panel, a stabilizing step of heating and cooling the panel next, and a coating step of subsequently forming a phosphor and an aluminum film. In a cathode ray tube manufacturing apparatus having a seat configuration step of determining the starting product order according to the seats on the panel in advance, a coating film defect shifter circuit provided in a portion after the phosphor film formation in the coating process to shift a coating film defect, A defective aluminum film thickness shifter circuit provided in a portion after the aluminum film formation in the coating step to shift a defective aluminum film thickness and a defective panel shifted by the coated film defective shifter circuit and the defective aluminum film thickness shifter circuit are classified. Defect recovery automatic sorting system,
Due to the difference in index between the conveyor for returning coating film defects classified by this defect return automatic sorting system to the seat forming process and the conveyor for returning aluminum film thickness defects before the aluminum film forming process, and the stabilizing process and the coating process. An apparatus for configuring a coating seat for a cathode ray tube, comprising: an automatic control means for introducing the coating film defect returned by the conveyor to the seat forming step so as to make up for the shortage of the coating step.