JP2002075183A - Assembling apparatus and method of aperture grill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an assembling apparatus and a method of aperture grill which suppresses the occurrence of AG wrinkles and ensures its allowance, by minimizing the fluctuation of tension pattern of an aperture grill. SOLUTION: This aperture grill assembling apparatus 5 gives tension to a rectangular-like AG frame 1, consisting of a pair of frame members 2 disposed in parallel with each other and connecting members 2 mounted to both the frame members 2 respectively, and includes pressuring equalize units 6 making contact with the outer surfaces of the pair of the frame member 2 disposed in parallel and putting pressure on the frame members 2 in a direction of making the distance between them smaller, in which the pressuring equalize units 6 consists of pressure units 8 and a pair of parallel hard metal pins 9 fixed on a contacting side between the outer side of the frame members 2 and support holders 10 for holding the pressurizing units 8 rockably within a prescribed range, and also the pressurizing equalizing units 6 are arranged at four positions to the right and left, so as to correspond to the frame members 2 and touch to the outer surface of a curvature at a right angle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for assembling an aperture grill which constitutes a color selection mechanism for a cathode ray tube, which is widely used as a monitor for various devices such as a television receiver and a computer display monitor. It is about the method.

[0002]

2. Description of the Related Art FIG. 3 is an external perspective view showing a color cathode ray tube partially broken away. A color cathode ray tube 21 has a panel portion 22 constituting a screen and a neck portion 24 in which an electron gun 23 is sealed. A funnel body 25 having a conductive film provided on a part of the outer surface; a neck 24 and a funnel body 25
A color selection mechanism 27 as shown in FIG. 4 is provided inside the panel section 22 so that the electron beam emitted from the electron gun 23 is
Is controlled by a plurality of grid electrodes, and the same electron beam is selected by a color selection mechanism 27 and transmitted through the screen of the panel unit 22 to focus the image on the phosphor of the screen and emit light. Is configured to shine.

As shown in FIG. 4, the color selection mechanism 27 is constructed by extending an aperture grill 28 having a large number of stripe-shaped slits in a vertical scanning direction formed on a metal plate by selective etching on an AG frame 29. Things. The AG frame 29 includes a pair of parallel frame members 30 having an L-shaped cross section, and a pair of the frame members 30.
And a pair of connecting members 31 made of a hollow rectangular pipe material or the like for connecting and holding the pair of frame members 30 in parallel at predetermined intervals.

[0004] A damper spring 32 is welded to the pair of connecting members 31.
The vibration of the aperture grill 28 is suppressed by extending the damper wire 33 so as to be in contact with the surface of the aperture grill 28 between the two. In the color selection mechanism 27 having such a configuration, it is a great problem to suppress the deterioration of the image quality of the color cathode ray tube due to the vibration called so-called AG fluctuation of the aperture grill 28 due to vibration, impact, and the like. 28 is stretched between the pair of frame members 30 while applying a predetermined tension, and furthermore, a damper wire 33 is stretched over the surface of the aperture grill 28.

FIG. 5 shows an outline of an apparatus for assembling by assembling an aperture grill 28 between a pair of frame members 30 constituting an AG frame 29. A fixed bar 34 and an equalizing bar 35 are provided opposite the pair of frame members 30 of the AG frame 29.
4 and the equalizing bar 35 with a pressing unit 36 respectively.
Is built-in. The pressure unit 36 is provided with a pair of carbide pins 37 parallel to the contact surface side with the curved outer surface of the frame member 30 to improve abrasion resistance at the time of pressurization. Is supported via a support holder 38 in order to perform the operation smoothly.

[0006] Next, the aperture grill 28 by the above-mentioned device is used.
Will be described. First, the AG frame 29
Are positioned in the X and Y directions, and in this state, a fixed amount of pressure is applied in the Y direction by the equalizing bar 35 with the fixed bar 34 as a reference. As a result, the pressing unit 36 is moved with respect to the outer surface of the frame member 30, and the carbide pin 37 contacts the outer surface and starts pressing. At the time of pressurization, the front end surface of the frame member 30 is pressed from above by a pressing roller (not shown), and the frame member 30 is deformed under pressure so that the curved surface on the outer surface side becomes flat.

As described above, the pair of frame members 30 are deformed in a direction in which the distance therebetween is reduced by pressurization, and the aperture grill 28 is supplied between the deformed pair of frame members 30 to maintain the state. Then, both edges of the aperture grill 28 are fixed to the upper end surface of the frame member 30 by welding. Then, when the pressing force is removed after the welding is completed, a force for returning the pair of frame members 30 to the original distance acts on the pair of frame members 30 by the restoring force, and the aperture grill 28 receives the tension due to the restoring force and applies a predetermined tension. It is stretched in the state that was done.

Here, when the frame member 30 is pressurized, it is necessary to press the pressing unit 36 evenly in close contact with the frame member 30 so as not to generate an eccentric load, prevent local deformation and prevent the aperture grill 28 from being deformed. Is important in stabilizing the tension pattern of the aperture grill and preventing the occurrence of irregularities called AG wrinkles on the surface of the aperture grill. However, in the above-described assembling apparatus, since a certain amount of pressure is applied in the Y direction by the equalizing bar 35 based on the fixed bar 34, four pressing units 36 are provided on the curved surface of the outer surface of the frame member 30. Due to the friction coefficient difference of the surface state of the frame member 30 that has not been evenly and closely contacted and shot blasted, the carbide pin 37 slips or an uneven load due to uneven pressing equalization occurs. .

As a result, after the completion of the assembly of the color selection mechanism, the tension pattern of the stretched aperture grille 28 may fluctuate, or irregularities called AG wrinkles may occur on the surface. A large number of stripe-shaped slits of the aperture grill 28 become non-uniform, causing a problem of deteriorating image quality. The pressurizing unit 36
Are not evenly close to each other and the contact state becomes unstable. This causes a variation in quality and causes a decrease in quality of the color cathode ray tube.

[0010]

SUMMARY OF THE INVENTION The present invention has been made to address the above-mentioned problems, and a first object of the present invention is to provide a frame member of an AG frame evenly when the aperture grill is extended. An object of the present invention is to provide an apparatus and a method for assembling an aperture grille which can minimize the fluctuation of the tension pattern of the aperture grill by suppressing the pressure and suppress the generation of AG wrinkles and secure the alliance thereof. is there. Another object of the present invention is to provide an aperture grill assembling apparatus and a uniform high-quality cathode-ray tube which can eliminate a variation in quality by equalizing the pressing of the frame member by the pressing unit. It is to provide a method.

[0011]

In order to solve the above-mentioned problems, an apparatus for assembling an aperture grill according to the present invention comprises a rectangular frame having a pair of parallel frame members and a connecting member for connecting the frame members. An aperture grille assembling apparatus, wherein the aperture grill is stretched by applying a predetermined tension to the AG frame, wherein the aperture frame contacts the outer surfaces of the pair of parallel frame members to reduce the distance between the frame members. A pressurizing equalizing unit that pressurizes in a direction, wherein the pressurizing equalizing unit includes a pair of parallel super-units provided on a contact surface side of the pressurizing unit and an outer surface of the frame member of the pressurizing unit. A hard pin, and a support holder that supports the pressurizing unit so as to swing freely within a predetermined range. The pressurizing equalizing unit is opposed to the frame member. At four right and left sides of the frame member so as to be perpendicular to the curved surface of the outer surface of the frame member. Is installed so as to be perpendicular to the curved surface of the outer surface of the frame member, so that the carbide pin of the pressure equalizing unit is always closely contacted at right angles to the curved surface of the outer surface of the frame member, Can be uniformly pressed and deformed to extend the aperture grill.

Further, in the apparatus for assembling an aperture grill according to the present invention, in the above-described apparatus for assembling an aperture grill, each of the pressure equalizing units is X,
It is characterized in that it has a shift function in the Y direction, and since each pressure equalizing unit can shift in the X and Y directions, fluctuations in the tension pattern of the aperture grille are caused by lot differences in the AG frame or the aperture grille. The pressure position can be easily adjusted in the event of occurrence in the assembling process or the like.

Further, in the method of assembling the aperture grill according to the present invention, a predetermined tension is applied to a rectangular frame-shaped AG frame including a pair of parallel frame members and a connecting member for connecting the frame members. A method of assembling an aperture grille that spans the aperture grille, wherein a step of contacting the pressure equalizing unit from a perpendicular direction to a curved surface of an outer surface of the pair of parallel frame members,
A step of equalizing the pressure equalizing unit in this state to press the pair of parallel frame members in a direction to reduce the gap therebetween, and an end of the aperture grill while holding the frame members in a pressurized state. Welding and fixing an edge to the upper end surface of the frame member, and releasing the pressurized state by the pressure equalizing unit to stretch the aperture grill by applying a predetermined tension between the frame members. It is characterized in that the frame member can be deformed under pressure by equalizing the pressure equalizing unit in close contact with the curved surface of the outer surface of the frame member from a right angle direction, An aperture grille is applied to the frame member while suppressing uneven load and local deformation by uniformly pressing and deforming the frame member. It is possible to rack Zhang and welding.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view showing a schematic configuration of an aperture grill assembly apparatus according to a first embodiment of the present invention, and FIG. 2 is a perspective view showing a schematic configuration of an aperture grill assembly apparatus according to a second embodiment of the present invention. is there.

In FIG. 1, reference numeral 1 denotes an AG frame which constitutes a color selection mechanism, and is composed of a pair of parallel frame members 2 and a connecting member 3 which connects the frame members 2 as in the above-described conventional one. It is formed in a rectangular frame shape. Reference numeral 4 denotes an aperture grill which is stretched by applying a predetermined tension between a pair of parallel frame members 2 of the AG frame 1.
Reference numeral 5 denotes an aperture grill assembly device for welding the aperture grill 4 to the upper end surfaces of the pair of parallel frame members 2 of the AG frame 1 and applying a predetermined tension between the frame members 2 to stretch the aperture grill 4. is there.

The aperture grill assembling apparatus 5 includes pressure equalizing units 6 installed at four positions on the left and right of the pair of parallel frame members 2 opposite to each other.
It is configured so that the G frame 1 can be positioned by being distributed in the X and Y directions. Each pressurized equalizing unit 6
Are attached to the dedicated unit 7 and have a function of shifting by a predetermined stroke in the X and Y directions, respectively. The tension pattern of the aperture grill 4 fluctuates due to a frame lot difference or an aperture grill assembly process or the like. In this case, the pressing position can be adjusted.

Each of the pressure equalizing units 6 includes a pressure unit 8, a pair of parallel carbide pins 9 provided on a contact surface side of the pressure unit 8 with the curved outer surface of the frame member 2, And a support holder 10 for supporting the pressurizing unit 8 so that the pressurizing unit 8 can be smoothly swung within a predetermined angle range. A guide 11 is mounted on an upper portion of the support unit 10. It is installed via a dedicated unit 7 so as to be in close contact with the right angle.

The pressure equalizing unit 6 is provided with a guide 12 having a shape along the curved surface of the outer surface of the frame member 2 as shown in FIG. 2, and is installed on the guide 12 as described above. You may. The guides 11 and 12 have a function of bringing the carbide pin 9 into close contact with the curved surface of the frame member 2 when the pressure equalizing unit 6 is brought into contact with the curved surface of the outer surface of the frame member 2. .

In the above embodiment, when the aperture grill 4 is stretched between the frame members 2 of the AG frame 1 by applying a predetermined tension, first, the AG
The frame 1 is supplied onto the aperture grill assembly device 5,
It is positioned in the X and Y directions. Then, AG
The pressure equalizing unit 6 is made to scroll in the Y direction and contact the curved surfaces on the outer surfaces of the pair of parallel frame members 2 of the frame 1 from a right angle direction. Here, the carbide pins 9 provided on the pressing unit 8 of the pressing equalizing unit 6 by the action of the guides 11 and 12 are:
The frame member 2 is closely contacted at a right angle following the curved surface of the outer surface.

In this state, the pressure equalizing unit 6 is equalized on the other side with reference to one side, so that the pair of parallel frame members 2 is pressed in a direction to reduce the distance therebetween. When the frame member 2 is pressurized as described above, the upper end surface of the frame member 2 is pressed while being pressed by an upper surface pressing roller (not shown). By this pressing step, the outer surface of the frame member 2 is pressed and deformed to a substantially flat state.

After the frame member 2 is pressed and deformed to a predetermined state as described above, the upper surface pressing roller is removed, and an aperture grill 4 is supplied on the upper end surface of the frame member 2 to bring the frame member 2 into a pressed state. The edge of the aperture grill 4 is welded and fixed to the upper end surface of the frame member 2 while being held. After the welding is completed, the pressure equalizing unit 6
, The aperture grill 4 is stretched by applying a predetermined tension between the frame members 2 using the restoring force of the frame member 2 to its original shape.

Therefore, according to these embodiments, the pressure equalizing unit 6 is evenly applied to the outer surfaces of the pair of frame members 2 of the AG frame 1 by closely contacting them at right angles according to their shapes. Since the pressure can be applied, it is possible to apply the pressure while preventing the occurrence of an uneven load and the occurrence of local deformation, and it is possible to extend the aperture grill 4 by minimizing the fluctuation of the tension pattern. In addition, the generation of AG wrinkles can be suppressed by preventing an eccentric load and local deformation, and the alliance thereof can be secured.

Further, in the process of assembling the aperture grille 4, since the aperture grille 4 can be stretched by uniformly pressing the AG frame 1, the quality of the color selection mechanism can be stabilized with high quality. In addition, it is possible to prevent the quality of the cathode ray tube from deteriorating due to the fluctuation of the tension pattern of the aperture grill and the AG wrinkle in the color selection mechanism by suppressing the variation of the quality, and to ensure the high quality image.

[0024]

As described above in detail, according to the apparatus and method for assembling the aperture according to the present invention, the pressure equalizing unit is installed so as to be perpendicular to the curved surface of the outer surface of the frame member. As a result, the carbide pins of the pressure equalizing unit are always in close contact with the curved surface of the outer surface of the frame member at right angles, and the frame member is evenly deformed by pressing to suppress the occurrence of uneven loads and local deformation. In addition, the aperture grill can be welded to the frame member and stretched.

Therefore, it is possible to extend the aperture grille by minimizing the fluctuation of the tension pattern of the aperture grille, and it is possible to suppress the generation of AG wrinkles and to ensure the alliance thereof. In addition, since the quality variation of the color selection mechanism can be eliminated and the quality can be stabilized under high quality, a high quality cathode ray tube without image quality deterioration can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a schematic configuration of an aperture grille assembling apparatus according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a schematic configuration of an aperture grille assembling apparatus according to a second embodiment of the present invention.

FIG. 3 is a partially cutaway perspective view showing a configuration of a conventional color cathode ray tube.

FIG. 4 is a perspective view showing a configuration of a conventional color selection mechanism for a color cathode ray tube.

FIG. 5 is a perspective view (A) showing a schematic configuration of a conventional aperture grill assembly apparatus, and an enlarged view (B) showing a configuration of an S portion thereof.
It is.

[Explanation of symbols]

1 ... AG frame, 2 ... Frame member, 3 ... Connecting member,
4 ... Aperture grille, 5 ... Aperture grill assembly device, 6 ... Pressure equalizing unit, 7 ... Dedicated unit, 8 ... Pressure unit, 9 ... Carbide pin, 10 ... Support holder, 11, 12 ... Guide

Claims (3)

[Claims] 1. An aperture grille for applying a predetermined tension to an aperture grill to apply a predetermined tension to a rectangular frame-shaped AG frame including a pair of parallel frame members and a connecting member for connecting the frame members. An apparatus, comprising: a pressurizing equalizing unit that comes into contact with the outer side surfaces of the pair of parallel frame members and presses the frame members in a direction to reduce the distance between the pair of parallel frame members. A pair of parallel carbide pins provided on the contact surface side of the pressure unit with the outer surface of the frame member, and a support holder for swingably supporting the pressure unit within a predetermined range. The pressure equalizing unit is installed at four positions on the left and right sides of the frame member opposite to the frame member so as to be in contact with the curved surface of the outer surface of the frame member at right angles. An aperture grille assembling device, characterized in that: 2. The apparatus according to claim 1, wherein each of the pressure equalizing units has a shift function in X and Y directions. 3. An aperture grille for applying a predetermined tension to an aperture grille to apply a predetermined tension to a rectangular frame-shaped AG frame including a pair of parallel frame members and a connecting member for connecting the frame members. A method comprising: bringing a pressure equalizing unit into contact with a curved surface of an outer surface of the pair of parallel frame members from a right angle direction; and, in this state, equalizing the pressure equalizing unit. A step of pressing a pair of parallel frame members in a direction to reduce the gap, and fixing an edge of the aperture grill to an upper end surface of the frame member while holding the frame members in a pressed state. Releasing the pressurized state by the pressurizing equalizing unit and applying a predetermined tension to the aperture grill between the frame members. Method of assembling the aperture grill, characterized in that comprising the step of rack Zhang and.