JPH09147744A - Manufacture of shadow mask and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the machining time and process of a shadow mask to enhance production efficiency by punching a steel plate from a roll using a rotary press consisting of male and female drums, and cutting it after processes of resist application, exposure, and etching. SOLUTION: A steel plate 2 fed from a roll 2a is sandwiched and passed between the rotating, drum-shaped, blade-equipped male and female dies of a rotary press 7 to form continuous slits in a shadow mask. Next, a resist is applied to one side of the steel plate 2 by a resist application device 8 and baked by an exposure device 9, and burrs produced by punching are removed by an etching device 10. Next, the steel plate 2, from which a film of the resist is removed by a resist peeling device 11, is cut by a cutting press 5 to complete the shadow mask. Thus the slits are machined using the press 7, so the shadow mask can be manufactured with high efficiency while reducing the machining time and process.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shadow mask manufacturing method and manufacturing apparatus, and more particularly to a shadow mask manufacturing method and manufacturing apparatus used for a color cathode ray tube.

[0002]

2. Description of the Related Art Conventionally, a shadow mask provided in front of a phosphor of a color cathode ray tube is a steel plate provided with a large number of holes or blind grids for narrowing an electron beam. Since this shadow mask needs to make fine holes and lattices with extremely high dimensional accuracy, it is usually manufactured by chemical etching. For example, in the manufacturing process shown in FIG. 3, the steel plate 2 which is the raw material of the shadow mask 1 is unrolled from the roll 2 a and is fed by the feed roller 3.
It is transported horizontally.

First, a resist (photosensitive agent) for forming holes or slits by etching is applied to both front and back surfaces of the steel plate 2 (step P1). After coating, it is thoroughly dried. Next, the exposure mask 4 is brought into close contact with the resist-coated steel plate 2 from both upper and lower sides, vacuuming or the like is performed to increase the adhesion between the steel plate 2 and the exposure mask 4, and then the exposure light source 4a is applied. , The etching pattern is fixed on the steel plate (step P2). Next, an etching solution is applied (step P3), exposed (step P4), etched along the exposure pattern (step P5), and finally the steel plate 2 is cut individually by a cutting press 5 (step P4).
6) Complete shadow mask 1.

As described above, the conventional manufacturing process of the shadow mask 1 has a large number of steps, requires a long exposure time, requires a long etching time, and thus has a problem in production efficiency.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and an apparatus for manufacturing a shadow mask, which has a small number of processing steps and a short exposure time and etching time.

[0006]

According to a first aspect of the present invention, there is provided a shadow mask manufacturing method, wherein a step of punching a steel sheet sent from a roll by a rotary press, a step of applying a resist to the punched steel sheet, It is a method of manufacturing a shadow mask that includes a step of exposing the coated steel sheet, a step of etching the resist-exposed steel sheet, and a step of cutting the steel sheet that has undergone these steps. The number of punching and processing steps has been reduced, processing time has been shortened, and production efficiency has been improved.

A shadow mask manufacturing apparatus according to a second aspect of the present invention is a rotary press, a resist coating apparatus, an exposure apparatus, an etching apparatus, a resist film peeling apparatus, and a cutting press in the order of processing steel plates. The steel plate is continuously punched by a rotary press.
The number of processing steps has been reduced, processing time has been shortened, and production efficiency has been improved.

In the shadow mask manufacturing apparatus according to the third aspect of the present invention, the rotary press includes a drum-shaped male die and a drum-shaped female die, and blades are provided on the outer periphery of the male die and the female die, respectively. The structure of the shadow mask manufacturing apparatus according to claim 2, wherein a steel plate is sandwiched between a male mold and a female mold, a slit of the shadow mask is punched out, the processing steps are reduced, the processing time is shortened, and the production efficiency is improved. Improved.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

Exemplary Embodiment Hereinafter, a preferred exemplary embodiment of the present invention will be described with reference to FIGS. 1 and 2. The shadow mask manufacturing apparatus 6 is provided along the processing order of the steel sheet 2 in the order of the rotary press 7, the resist coating apparatus 8, the exposure apparatus 9, the etching apparatus 10, the resist film peeling apparatus 11, and the cutting press 5 along the steel sheet 2. ing.

The rotary press 7 includes a drum-shaped male die 7a and a drum-shaped female die 7b, and blades 7c are provided on the outer circumferences of these male die 7a and female die 7b, respectively.
By providing a gap 7d at a portion where punching is not necessary, the steel plate 2 passes through that portion.

In operation, the steel plate 2 is sandwiched between the male mold 7a and the female mold 7b and these molds are rotated to form a plurality of continuous slits 2a in the steel plate 2.

Next, a method of manufacturing a shadow mask using the manufacturing apparatus 6 will be described. The steel plate 2 sent from the roll 2a is punched into a predetermined shape by the rotary press 7 (punching step S1), and a resist is applied to one surface of the steel sheet 2 by the resist coating device 8 (resist coating step S2). . Next, the resist is baked by the exposure device 9 (exposure step S3). And
The etching apparatus 10 removes burrs generated by punching and performs etching with an appropriate taper (etching step S4). Next, the resist film peeling device 11
Then, the resist film is removed (resist stripping step S5) and finally cut by the cutting press 5 (cutting step S6) to complete the shadow mask 1.

According to the embodiment of the present invention described above,
In the manufacture of a shadow mask in the related art, the process of processing the slits 2b is performed by using a rotary press 7 instead of performing resist coating, exposure, and etching. Therefore, the process time is short and the process time is short, and the production efficiency is high. Made possible.

[0014]

According to the present invention, it is possible to provide a shadow mask manufacturing method and manufacturing apparatus which have a small number of processing steps, a short processing time, and high production efficiency.

[Brief description of the drawings]

1A is a perspective view of a rotary press which is a part of a shadow mask manufacturing apparatus of the present invention, and FIG. 1B is a side view thereof.

FIG. 2 is a schematic view showing a method and an apparatus for manufacturing a shadow mask of the present invention.

FIG. 3 is a schematic view showing a conventional shadow mask manufacturing method and apparatus.

[Explanation of symbols]

 1 Shadow Mask 2 Steel Plate 2a Roll 2b Slit 3 Feeding Roller 4 Exposure Mask 4a Light Source 5 Cutting Press 6 Shadow Mask Manufacturing Device 7 Rotary Press 7a Male 7b Female 7c Blade 7d Gap 8 Resist Coating Device 9 Exposure Device 10 Etching Device 11 Resist stripping device S1 punching step S2 resist coating step S3 exposure step S4 etching step S5 resist stripping step S6 cutting step

Claims (3)

[Claims] 1. A step of punching a steel sheet sent from a roll by a rotary press, a step of applying a resist to the punched steel sheet, a step of exposing the resist-coated steel sheet, and a step of exposing the resist-exposed steel sheet. A method of manufacturing a shadow mask, comprising a step of etching, and a step of cutting the steel sheet that has undergone the above steps. 2. A shadow mask manufacturing apparatus comprising a rotary press, a resist coating apparatus, an exposure apparatus, an etching apparatus, a resist film peeling apparatus, and a cutting press in the order of processing steel sheets. 3. The rotary press includes a drum-shaped male die and a drum-shaped female die, and blades are provided on outer circumferences of the male die and the female die, respectively.
An apparatus for manufacturing a shadow mask according to 1.