JPH07288080A - Flat aperture grille welding method and flat aperture grille welder - Google Patents

Abstract

PURPOSE:To reduce welding labor, increase efficiency, stabilize quality and realize a low fraction defective by applying tension to a flat aperture grille, and welding it in a condition where an AG frame is press fitted to the reverse. CONSTITUTION:First of all, an AG frame 1 is set on an AG frame receiver 4. On the other hand, the periphery of a flat aperture grille FAG12 is strongly clamped between a lower member 13 and an upper member 14 of clamp means 11a and 11b by a hydraulic cylinder 19, and the means 11b is pulled in the direction for separating from the means 11a by a pulling means 20. When the frame l is set on the frame receiver 4, a support member 1a is pressurized by a pressurizing means 9, and an elastic member 1b is deformed. The means 9 and the frame receiver 4 integrally rise by a pressure raising cylinder 10, and the frame 1 where the member 1b is put in a deformed condition by pressurization is press-fitted to the reverse of the FAG12 to receive tension by the means 20. In that condition, seam welding is performed by a welding electrode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat aperture grill welding method, and more particularly to a flat aperture grill welding method for welding a flat aperture grill to a support member of an AG frame, and a flat aperture grill welding machine used for carrying out the method.

[0002]

2. Description of the Related Art A Trinitron (trademark) color cathode ray tube uses an aperture grill as a color selection electrode in which a number of stripe-shaped openings (slits) in the vertical scanning direction are formed in a metal plate by selective etching. As shown in FIG. 3, the aperture grille is welded to the AG frame d by seam welding in the state of the flat aperture grille b with the peripheral a. e is a seam welded line, that is, a seam welded line.

The AG frame c is a pair of upper and lower support members (often referred to as "A member" in the applicant company etc.) and a pair of side elastic members (applicant applicant company etc.). Is often referred to as "B member" in the above). D, d (only one elastic member d appears in the drawing), and the flat aperture grill b is welded to the support member of the AG frame c. . still,
When the welding is completed, the flat aperture grill b
The peripheries are cut.

By the way, the flat aperture grill b
What is important in the welding to the AG frame c is to ensure that the welded flat aperture grill b receives a desired tension in the Y direction (vertical scanning direction) by the AG frame c. This is because the aperture grill b has a large number of slits, and the grill tape vibrates due to a loud sound or impact, which may result in deterioration of image quality. Therefore, it is necessary to suppress the vibration. Is. Conventionally, a pair of support members are pressed by a pressurizer and manually welded in that state. When the pressure is removed after the welding is completed, the AG frame d, specifically, the restoring force of the elastic members d, d is used. The flat aperture grill b was designed to receive tension.

[0005]

By the way, in the prior art, since such welding was manually performed, it takes a long time for welding, and the operator is required to have a very high technique.
There are problems that it is difficult to position the flat aperture grill with respect to the frame, and it is difficult to apply a desired tension to the flat aperture grill.

The present invention has been made to solve the above problems, and it is an AG of a flat aperture grill.
Labor saving of welding to the frame, high efficiency, stable quality,
The purpose is to reduce the defect rate.

[0007]

According to the flat aperture grill welding method of claim 1, pressure is applied to a pair of supporting members so that the distance between them is narrowed, and the upper and lower edges of the peripheral of the flat aperture grill are clamped. The flat aperture grill is tensioned, and the flat aperture grill and the AG frame are welded while the AG frame is crimped to the back surface of the flat aperture grill.

According to another aspect of the flat aperture grill welding machine of the present invention, an AG frame receiver for receiving the AG frame upward, a pressurizing means for pressurizing a pair of supporting members of the AG frame, the AG frame receiver and the pressurizing means. Elevating means for integrally raising and lowering, and a pair of clamping means for clamping the edge portion of the peripheral of the flat aperture grill above the AG frame on the AG frame receiver,
At least one pulling means for pulling one of the clamping means away from the other to apply a tension in the Y direction to the flat aperture grill.

[0009]

According to the flat aperture grill welding method of the first aspect of the present invention, pressure is applied to the pair of support members so that the distance between them is narrowed, and the upper and lower edge portions of the peripheral of the flat aperture grill are clamped to form the flat aperture grill. Since tension is applied and the AG frame is crimped to the back surface of this flat aperture grill, not only is the support member of the AG frame pressed, but the flat aperture grill itself is also in tension, so that after welding the flat aperture grill Can surely receive the desired tension from the AG frame.

According to the flat aperture grill welder of the second aspect, the flat aperture grill is accurately and automatically positioned with respect to the AG frame by precisely adjusting the positional relationship between the AG frame receiver and the clamp means. can do. Further, by adjusting the pressure of the pressure means and the force of the tension means, the pressure applied to the support member of the AG frame and the strength of the tension received by the flat aperture grill at the time of welding are automatically adjusted as desired. be able to. Therefore, the flat aperture grille welding method according to the first aspect can be automated, and further, high efficiency, stable quality, and low defective rate can be achieved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The flat aperture grill welding method and flat aperture grill welding machine of the present invention will be described in detail below with reference to the illustrated embodiments. FIG. 1 is a front view showing the essential parts of one embodiment of the flat aperture grill welding machine of the present invention. In the drawings, 1 is an AG frame, 1a, 1
Reference symbol a is a pair of support members, and reference symbols 1b and 1b are a pair of elastic members (however, only one elastic member 1b appears in the drawing).

Reference numeral 2 is a fixed receiving portion for receiving the pair of supporting members 1a, and 3 is a movable receiving portion for receiving the other supporting member 1a, which is provided so as to be movable in the Y direction. The fixed receiving portion 2 and the movable receiving portion 3 form an AG frame receiver 4. Reference numeral 5 is a pressurizing cylinder, which is composed of an air-hydraulic conversion type hydraulic cylinder and is provided so as to be movable in the Y direction.
The rod is fixed, and 6 is the fixed portion. Reference numeral 7 denotes a rotating body rotatably supported at a substantially central portion 8, one end of which is fixed to the pressure cylinder 5 and the other end thereof is fixed to the movable receiving portion 3. The pressurizing cylinder 5 and the rotating body 7 constitute a pressurizing means 9.

The pressing means 9 is rotated in the counterclockwise direction in FIG. 1 from the state shown by the chain double-dashed line by the driving force of the pressing cylinder 5 to support one supporting member 1a on the other. It functions to pressurize the member 1a. As a result, the elastic members 1b, 1b are deformed during welding and store a restoring force. At the same time, the supporting members 1a, 1a are deformed inward more greatly toward the central portion and store a greater restoring force toward the central portion. Reference numeral 10 denotes an elevating cylinder, which vertically moves the pressurizing means 9 and the AG frame receiver 4 integrally, and is an air-hydraulic conversion hydraulic pressure so as to press the AG frame 1 against the flat aperture grill with a strong force. It consists of a cylinder.

Reference numerals 11a and 11b are a pair of clamping means,
The flat aperture grilles 12 have substantially the same mechanism and clamp the upper and lower (upper and lower in the Y direction) peripherals of the flat aperture grill 12. Each of the clamping means 11a and 11b is shown in FIG.
As shown in FIG. 3, the lower member 13 has an upper surface that is convexly curved in a drum shape, and the upper member 14 that is concavely curved to correspond to the upper surface of the lower member 13, and the peripheral is clamped between them. Reference numeral 15 is a bar made of aluminum, and 16 is a urethane rubber, both of which are attached to the upper member 14 and play a role of preventing the flat aperture grille 12 from receiving a strong tension from coming off.

The upper member 14 is supported by a rotating air cylinder 18 from a state shown by a two-dot chain line in FIG.
The center of the flat aperture grill 12 is rotated with respect to the lower member 13 to hold the peripheral member of the flat aperture grill 12. Reference numeral 19 denotes a clamp pneumatic-hydraulic conversion type hydraulic cylinder that presses the lower member 13 upward, which firmly holds the peripheral. Reference numeral 20 is a pulling means for pulling the one clamp means 11b as a whole in a direction to be separated from the other clamp means 11a, and is conceptually shown by a two-dot chain line in the drawing, but a cylinder, for example, a pneumatic-hydraulic conversion cylinder is used as a drive source. The flat aperture grille 12 can be tensioned in the Y direction at the time of welding.

Next, a flat aperture grill welding method using the illustrated flat aperture grill welding machine will be described. First, the clamp means 11a and 1
The AG frame 1 is set on the AG frame receiver 4 in a state where the upper members 14 of 1b are pivoted outward and opened (see the upper member 14 indicated by the two-dot chain line in FIG. 1).

On the other hand, the flat aperture grille 12 is placed on the lower members 13 and 13 of the clamp means 11a and 11b, and then the rotating air cylinders 18 and 18 are operated to rotate the upper members 14 and 14 inward. Upper member 14, 1
4 and the lower members 13, 13 keep the peripheral of the flat aperture grill 12 held, and thereafter, the pneumatic members for clamping hydraulic pressure conversion hydraulic cylinders 19, 19 push the lower members 13, 13 upward to push the flat aperture grill 12 upward. Clamp the peripheral with strong force. Then, the tension means 20 is used to clamp the clamp means 11.
Pull b in the direction away from the clamping means 11a. This causes the flat aperture grille 12 to be in a state of being tensioned in the Y direction.

When the AG frame 1 is set on the AG frame receiver 4, the supporting members 1a, 1a are pressed by the pressing means 9.
Is pressed to deform the elastic members 1b, 1b.
Then, the pressurizing means 9 and the AG frame 4 receiver are integrally raised by the elevating cylinder 10, so that the AG frame 1 in a state in which the elastic members 1b, 1b are deformed by pressurization is tensioned by the tensioning means 20. It is crimped to the back surface of the flat aperture grille 12 to be received. Then, in that state, seam welding is performed by a welding electrode (not shown).

According to the present welding machine, the flat aperture grill 12 is accurately and automatically positioned with respect to the AG frame 4 by precisely adjusting the positional relationship between the AG frame receiver 4 and the clamp means 11a and 11b. can do. Further, the pressing force of the pressurizing means 9 and the pulling means 2
By adjusting the force of 0, it is possible to automatically adjust the pressure applied to the support members 1a, 1a of the AG frame 1 and the strength of the tension received by the flat aperture grill during welding. Therefore, the flat aperture grill welding method can be automated, and further, high efficiency, stable quality, and low defective rate can be achieved.

That is, pressure is applied to the pair of support members 1a, 1a in a direction in which the distance between the support members 1a, 1a is narrowed, the upper and lower edges of the peripheral of the flat aperture grille 12 are clamped, and tension is applied to the flat aperture grille 12. Since the AG frame 1 is pressure-bonded to the back surface of the aperture grill 12, only the support member 1 for the AG frame 1 is attached.
In addition to pressurizing a and 1a, the flat aperture grill 12 itself is also in a tensioned state, so that it is possible to ensure that the flat aperture grille 12 receives the desired tension from the AG frame 1 after welding. By welding, the aperture grille 12 can be welded to the AG frame 4 so that each tape thereof receives a desired tension.

[0021]

According to the flat aperture grill welding method of the first aspect of the present invention, pressure is applied to the pair of support members so that the distance between them is narrowed, and the upper and lower edges of the peripheral of the flat aperture grill are clamped to form the flat aperture grill. The flat aperture grill and the AG frame are welded in a state in which tension is applied and the AG frame is crimped to the back surface of the flat aperture grill. Therefore, according to the flat aperture grill welding method of the first aspect, pressure is applied to the pair of support members so that the distance between the support members is narrowed, and the upper and lower edges of the peripheral of the flat aperture grill are clamped to tension the flat aperture grill. In addition, since the AG frame is crimped to the back surface of this flat aperture grill, not only is the support member of the AG frame pressed, but the flat aperture grill itself is also in tension, so the flat aperture grill after welding is It is possible to surely receive the desired tension from the AG frame.

According to another aspect of the flat aperture grill welding machine of the present invention, an AG frame receiver for receiving the AG frame upward, a pressurizing means for pressurizing a pair of supporting members of the AG frame, the AG frame receiver and the pressurizing means. Elevating means for integrally raising and lowering, and a pair of clamping means for clamping the edge portion of the peripheral of the flat aperture grill above the AG frame on the AG frame receiver,
And a pulling means for pulling one of the clamping means away from the other to apply a tension in the Y direction to the flat aperture grill. Therefore, according to the flat aperture grill welder of the second aspect, the flat aperture grill is accurately and automatically positioned with respect to the AG frame by precisely adjusting the positional relationship between the AG frame receiver and the clamp means. be able to. Also, by adjusting the pressure of the pressure means and the force of the tension means, the force applied to the AG frame support member during welding and the strength of the tension applied to the flat aperture grill are automatically controlled as desired. can do. Therefore, the flat aperture grill welding method according to claim 1 can be automated, and further, high efficiency, stable quality,
A low defect rate can be achieved.

[Brief description of drawings]

FIG. 1 is a front view showing a main part of one embodiment of a flat aperture grill welding machine of the present invention.

FIG. 2 is an explanatory view of a clamp means of the above embodiment.

FIG. 3 is a perspective view of a flat aperture grill welded to an AG frame.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 AG frame 1a Support member 1b Elastic member 4 AG frame receiver 9 Pressurizing means 10 Elevating means 11a Clamping means 11b Clamping means 12 Flat aperture grille 20 Pulling means

Claims (2)

[Claims] 1. An AG frame comprising a pair of supporting members to which a flat aperture grill is welded and a pair of elastic members holding the supporting members, and the pair of supporting members is pressed against the pair of supporting members so as to have a narrow gap therebetween. The flat aperture grill is clamped at the upper and lower sides [up and down in the Y direction (vertical scanning direction)] of the peripheral edge so as to have a bending similar to that of the supporting member, and tension is applied to the flat aperture grill in the Y direction in that state. A flat aperture grill welding method, characterized in that an AG frame is pressure-bonded to the back surface of the flat aperture grill, and the flat aperture grill and the AG frame are welded. 2. An AG frame consisting of a pair of support members to which a flat aperture grill is welded and a pair of elastic members for holding the support members is provided above or below [in the Y direction (vertical scanning direction)]. An AG that has at least a fixed receiving portion that receives the AG frame and a movable receiving portion that receives the other supporting member, and receives the AG frame with the AG frame facing upward.
A frame receiver; a pressurizing means for applying a pressing force for moving the movable receiver to the fixed receiver side; an elevating means for integrally raising and lowering the AG frame receiver and the pressurizing means; and the flat aperture grill. A pair of clamping means for clamping the end edge portion of the peripheral above the AG frame on the AG frame receiver, and a pulling means for separating one of the clamping means from the other to apply a tension in the Y direction to the flat aperture grill. A flat aperture grill welder characterized by having at least