JP2003178673A - Pressing mechanism and method of manufacturing mask body structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a method of manufacturing a pressing mechanism capable of uniformly pressing a rod-shaped supporting part even if the dimensions of frame body structure are dispersed, and to provide a method of manufacturing for mask body structure capable of appropriately welding a mask and frame body structure without using complicated contour welding mechanism even if the dimensions of the frame body structure are dispersed. <P>SOLUTION: Members 3a1-3a4, 3b1-3b4 are respectively fit to the tip parts of projecting structures 2a1-2a4, 2b1-2b4. The members 3a1-3a4, 3b1-3b4 have a property deformable after the shapes of the outside surfaces of the rod-shaped supporting parts 102a, 102b when pressed, constituted with hollow rubber in which an inside space is filled with air, water, or oil for example. Movement of a movable part 1a for pressing the frame body structure 101 is stopped at a point of time when the distance between the side surfaces of the rod-shaped supporting parts 102a, 102b becomes the previously set specified distance W1. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a pressure mechanism and a method of manufacturing a mask structure in manufacturing an aperture grill type color selecting electrode used for a color cathode ray tube.

[0002]

2. Description of the Related Art FIG. 6 is a perspective view showing the structure of an aperture grill type mask structure. The mask structure functions as a color selection electrode of a color cathode ray tube, and includes a frame structure 101 having rod-shaped supporting portions 102a and 102b, a plurality of frames 103, and elastic supporting portions 104a and 104b, strip portions 112a and 112b, and And a mask 110 having a plurality of grid elements 111.

The rod-shaped support portions 102a and 102b form a pair in a substantially parallel positional relationship, and the inner side surfaces face each other. Two frames 103 are attached to each of the rod-shaped support portions 102a and 102b. Each frame 103 has a substantially L-shape, and one end of each frame 103 is connected to the bottom surface of the rod-shaped support portions 102a and 102b. The other ends of the two frames 103 whose inner side surfaces face each other have rod-shaped support portions 102a,
The elastic support portions 104a and 104b extend in a direction perpendicular to the direction in which 102b extends, and are connected to each other.

Bands 112a and 112b of the mask 110
Are fixed to the upper surfaces of the rod-shaped support portions 102a and 102b by welding or the like. Bands 112a, 11
A plurality of grid elements 111 that form a comb-shaped pattern are formed between the two 2b. All of the plurality of grid elements 111 are rod-shaped support portions 102a, 102a.
It extends in a direction perpendicular to the direction in which b extends. Also,
All of the plurality of grid elements 111 are rod-shaped support parts 10.
It is held in a stretched state by pulling both ends by 2a and 102b.

The mask 110 is attached to the frame structure 101 as follows. First, the rod-shaped support portion 102 is pressed by a pressing mechanism (not shown in FIG. 6).
The outer side surfaces of a and 102b are pressed inward. As a result, the frame structure 101 is deformed so that the rod-shaped support portions 102a and 102b approach each other. Next, while maintaining this pressurized state, the rod-shaped support portions 102a, 102a
The mask 110 is placed on the upper surface of b. Then, the rod-shaped support portions 102a and 102b and the belt portions 112a and 112b are fixed by welding or the like. Next, after the fixing step is completed, the rod-shaped support portion 10 by the pressing mechanism is
The pressure applied to 2a and 102b is released. As a result, due to the restoring force of the frame structure 101, the rod-shaped support portions 102a,
102b are displaced in the direction away from each other. Along with that, the strips 112a and 112b are similarly displaced, and as a result,
By the tension given from the band portions 112a and 112b,
A plurality of grid elements 111 are stretched.

FIG. 7 is a top view showing the structure of a conventional first pressurizing mechanism (see Japanese Patent Application Laid-Open No. 55-40978). The pressurizing mechanism includes a fixed portion 120 having protruding portions 121a and 121b and a movable portion 122 having protruding portions 123a and 123b. The movable part 122 is fixed to the fixed part 12.
By bringing it closer to the 0 side, the protrusions 121a, 121b
The rod-shaped support portion 102b is pressed by the protrusions 123a and 123b.

FIG. 8 is a top view showing the structure of a conventional second pressing mechanism (see Japanese Patent Laid-Open No. 62590/1993).
The pressurizing mechanism has a fixed portion 130 having protrusions 131a and 131b rotatably attached to shafts 132a and 132b, and protrusions 134a and 134b rotatably attached to shafts 135a and 135b. And a movable part 133. The contact surfaces of the protrusions 134a and 134b contacting the rod-shaped support portion 102a and the contact surfaces of the protrusion portions 131a and 131b contacted to the rod-shaped support portion 102b are not pressed.
The shape is the same as the shape of each outer surface of a and 102b, or has a larger radius of curvature than the shape of each outer surface.
By bringing the movable part 133 closer to the fixed part 130 side,
The rod-shaped support portion 102b is formed by the protrusions 131a and 131b
And the rod-shaped support portion 102a is pressed by the protrusions 134a and 134b.

FIG. 9 is a top view showing the structure of a conventional third pressing mechanism (see Japanese Patent Laid-Open No. 5-314896). The pressure mechanism has a fixed portion 1 having a contact surface of a predetermined shape.
40 and a movable part 141 having a contact surface of a predetermined shape. The shapes of the contact surfaces of the movable portion 141 and the fixed portion 140 are the same as the outer surfaces of the rod-shaped support portions 102a and 102b in the frame structure 101 before the grid element body is stretched, and the rod-shaped support portions in the completed mask structure. 10
It is an envelope surface composed of a numerical value obtained by multiplying the outer frame displacement amount with each outer surface of 2a and 102b by a constant. By bringing the movable portion 141 closer to the fixed portion 140 side, the fixed portion 140 pressurizes the rod-shaped support portion 102b, and the movable portion 1
The rod-shaped support portion 102a is pressed by 41.

FIG. 10 is a schematic diagram for explaining the control method of the first to third pressurizing mechanisms. FIG. 10 (A) shows the state of the frame structure 101 before pressurization.
0 (B) shows the state of the frame structure 101 after the pressurization. The rod-shaped support part 102b is a fixed part 120, 130, 1
Since it is in contact with 40, the bar-shaped support part 10 is
The position of the outer surface of 2b does not change. On the other hand, the movable part 12
2, 133, 141 are based on the position at the time of contacting the rod-shaped support portion 102a, and the rod-shaped support portion 102a after pressurization is applied.
The position of the outer side surface of the rod-shaped support portion 102 is the distance L100.
It is displaced in the direction of approaching b. As described above, conventionally, the movable portions 122, 133, and the movable portions 122, 133 are moved by the preset distance L100.
The operations of the first to third pressure mechanisms are controlled so that the movement is stopped when 141 is moved.

[0010]

However, the above-mentioned first to third pressurizing mechanisms and the control method therefor have the following problems.

According to the first pressurizing mechanism shown in FIG. 7, the protrusions 121a and 121b and the rod-shaped support 102b, and the protrusions 123a and 123b and the rod-shaped support 102a are protrusions 121a and 121b, respectively. 123a, 123b
Point contact at the tip of. Therefore, the protrusions 121a, 121
Local deformation occurs in the rod-shaped support portions 102a and 102b due to the local pressure applied by b, 123a and 123b. As a result, there are problems that wrinkles and pitch unevenness occur in the grid element body 111 of the mask 110, and the tension distribution of the grid element body 111 becomes unbalanced. Such a problem becomes more remarkable as the thickness of the rod-shaped support portions 102a and 102b becomes thinner.

Further, according to the second pressurizing mechanism shown in FIG. 8, the protrusions 131a, 131b, 134a, 134b centering on the shafts 132a, 132b, 135a, 135b are provided.
When a situation occurs in which the rotation operation of No. 2 is not smooth, there is a problem that the protruding portions 131a, 131b, 134a, 134b and the rod-shaped support portions 102a, 102b do not make good surface contact (that is, one-sided contact). Even if a smooth rotation operation is obtained, the protrusions 131a, 1a
31b, 134a and 134b are shafts 132a and 132b,
Since it freely rotates around 135a and 135b,
As the pressurization progresses, the protrusion 13 is affected by slippage or the like.
1a, 131b, 134a, 134b and rod-shaped support portion 10
The contact points with 2a and 102b are slightly displaced. Then, in reality, the displacement amounts of the left and right protrusions (for example, the protrusion 131a and the protrusion 131b) are considered to be non-uniform. Therefore, due to the non-uniformity, the tension distribution of the grid element body 111 is left and right. There is a problem of becoming asymmetric.

According to the third pressurizing mechanism shown in FIG. 9, the contact surfaces of the fixed portion 140 and the movable portion 141 are fixed in a predetermined shape. Therefore, when the dimension of the frame structure 101 varies from the design value due to manufacturing reasons or the like, and the distance between the rod-shaped support portions 102a and 102b is longer or shorter than the design value, the distance is long. Then, the applied pressure becomes excessively strong, and the applied pressure becomes weak at the place where the distance is short. As a result, there is a problem that the tension distribution of the grid element body 111 becomes unbalanced due to the non-uniformity of the pressing force.

Further, as described above, in the conventional control method of the pressurizing mechanism, the pressurizing mechanism is stopped so that the movable parts 122, 133, 141 are moved by the predetermined distance L100 when the movable parts 122, 133, 141 are moved. The behavior of is controlled. Therefore, referring to FIG. 10, the dimensions of the frame structure 101 vary, and the rod-shaped support portions 102a, 102a,
Interval between the outer surfaces of 102b (W100 + L100)
If is deviated from the design value, even in the state after pressurization,
The distance (W100) between the outer surfaces of the rod-shaped support portions 102a and 102b is deviated from the specified value. That is, the positions of the rod-shaped support portions 102a and 102b after being pressed vary from product to product due to variations in the dimensions of the frame structure 101.

Therefore, in order to properly weld the mask 110 and the frame structure 101 even when the positions of the rod-shaped supporting portions 102a and 102b are varied, the Narai welding mechanism is adopted. FIG. 11 is a perspective view showing a state where welding is being performed by the Narai welding mechanism. 4 each
The Narai rods 164a and 164b of the book are attached to the rod-shaped supporting unit 102.
The arai plate 16 is brought into contact with the outer side surfaces of a and 102b.
5a and 165b are positioned, and the Narai plate 165
cam follower 166 along each outer surface of a and 165b.
a and 166b are run to connect the connecting arm 16
Cam followers 166a, 166 through 7a, 167b
By the welding electrodes 163a and 163b traveling in tandem with b, the rod-shaped support portion 1 on the welding lines 150a and 150b.
02a, 102b and the mask 110 are welded to each other.

As described above, according to the conventional control method of the pressurizing mechanism, even if the positions of the rod-shaped supporting portions 102a and 102b are varied due to the variation in the dimensions of the frame structure 101, the mask 110 and the frame structure 101 are not changed. There is a problem that it is essential to use a Narayi welding mechanism having a complicated structure in order to properly weld and.

The present invention has been made to solve these problems, and a pressing mechanism that can press the rod-shaped supporting portion without unevenness even when the dimensions of the frame structure vary. An object of the present invention is to obtain a method for manufacturing a mask structure that can appropriately weld a mask and a frame structure without using a complicated Narayi welding mechanism even if the dimensions of the frame structure vary.

[0018]

[Means for Solving the Problems] Claim 1 of the present invention
The pressurizing mechanism described in (1) above is a grid for obtaining a mask structure in which a plurality of grid elements are arranged in a stretched state between a pair of rod-shaped support parts connected to each other via elastic support parts. When the mask having the element body and the frame structure having the elastic support portion and the rod-shaped support portion are fixed to each other, a pressing mechanism for pressing the outer surface of the rod-shaped support portion in a direction in which the paired rod-shaped support portions approach each other. And a plurality of projecting structures each having a tip portion that comes into contact with the outer surface when being pressed, and each tip portion of the plurality of projecting structures can be deformed by applying pressure to follow the shape of the outer surface. It is characterized in that each member is attached.

Further, the pressing mechanism according to claim 2 of the present invention is the pressing mechanism according to claim 1, wherein the member is a hollow member capable of adjusting the pressure of the internal space. It is characterized by that.

The pressing mechanism according to a third aspect of the present invention is the pressing mechanism according to the second aspect, wherein the plurality of projecting structures apply symmetrical positions of the pair of rod-shaped supporting portions. It is characterized in that the internal spaces of the members that include a pair of protruding structures that are pressed and that are respectively attached to the pair of protruding structures are connected to each other.

The pressing mechanism according to a fourth aspect of the present invention is the pressing mechanism according to any one of the first to third aspects, in which the distance between the pair of rod-shaped supporting portions is It is characterized in that it is controlled so that further pressurization is stopped when a predetermined distance is reached.

According to a fifth aspect of the present invention, in the method of manufacturing a mask structure, a plurality of grid elements are stretched between a pair of rod-shaped support portions connected to each other through elastic support portions. In order to obtain the mask structure arranged in the state,
(A) In the direction in which the pair of rod-shaped support portions approach each other,
A step of pressurizing the outer surface of the rod-shaped support portion by a pressurizing mechanism, and (b) a step of fixing a mask having a grid element on the rod-shaped support portion while maintaining the pressure applied in step (a). c) a step of releasing the pressure applied by the pressure mechanism after the step (b) is completed, and in the step (a),
The pressurizing mechanism is characterized in that it is controlled so that further pressurization is stopped when the distance between the pair of rod-shaped support portions reaches a predetermined distance.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. FIG. 1 is a top view showing a pressure mechanism according to a first embodiment of the present invention together with a frame structure 101. FIG. 1 shows a state before the pressing of the frame structure 101 by the pressing mechanism is executed. The pressurizing mechanism according to the first embodiment is similar to the conventional one in that the elastic support portions 104a and 104b and the frame 103 are provided.
Bar-shaped support portions 102a, 102 connected to each other via
When the mask 110 and the frame structure 101 are fixed to each other in order to obtain a mask structure in which a plurality of grid elements 111 are stretched between b, the rod-shaped support part 1
02a and 102b press the outer side surfaces of the rod-shaped support portions 102a and 102b in a direction in which the two 02a and 102b approach each other.

The pressurizing mechanism according to the first embodiment is fixedly arranged so as to face the movable part 1a with the movable structure 1a having four projecting structures 2a1 to 2a4 and the frame structure 101 interposed therebetween. And the fixing portion 1b having the protruding structures 2b1 to 2b4. The respective tip portions of the projecting structures 2a1 to 2a4 and the projecting structures 2b1 to 2b4 face each other. Projection structure 2a1-2a4, 2b1-2
The members 3a1 to 3a4 and 3b1 to 3b1 to 3a1 to 3a3 are attached to the respective tip portions of b4.
b4 is attached respectively. Members 3a1-3a
4, 3b1 to 3b4 are rod-shaped support portions 102a,
It has a property that it can be deformed according to the shape of each outer surface of 102b, and is made of, for example, a hollow rubber (or tube) whose internal space is filled with air, water, oil or the like.

2 and 3 are top views sequentially showing the steps of pressing the frame structure 101 by the pressing mechanism according to the first embodiment. Referring to FIG. 2, first, the rod-shaped support portion 1
The outer surface of 02b is brought into contact with the members 3b2 and 3b3 of the fixed portion 1b to arrange the frame structure 101. At this point, the members 3a1 to 3a4 of the movable portion 1a and the frame structure 1 are
01 and the rod-shaped support portion 102a are not in contact with each other. Next, the movable portion 1a is gradually moved upward in the drawing (first-stage movement). While continuing to move,
First, the members 3a2, 3a3 first come into contact with the outer surface of the rod-shaped support portion 102a, but in the first stage movement, all the members 3a1-3a4, 3b1-3b4 have the rod-shaped support portion 102a.
When it contacts a and 102b, it stops once. At this stage, the frame structure 101 is hardly deformed by the pressure.

With reference to FIG. 3, next, the movement of the movable portion 1a is restarted (the movement of the second stage). As a result, the frame structure 101 is pressed by the pressure mechanism, and the frame structure 101 is deformed. Specifically, the members 3a1-3a
Pressurization from both sides by 4, 3b1 to 3b4 causes the rod-shaped support portions 102a and 102b to be displaced in a direction toward each other. FIG. 4 shows the member 3b4 and the rod-shaped support portion 10 from FIG.
It is the top view which extracted and expanded only the contact part with 2b. The member 3b4 is expanded and deformed in the lateral direction of the drawing by the pressure from the projecting structure 2b4 and the rod-shaped support portion 102b, but the bottom surface of the member 3b4 is deformed.
It is deformed following the shape of the outer surface of b, and the member 3b4 after deformation is in good contact with the outer surface of the rod-shaped support portion 102b.

Now, the timing of stopping the movement in the second stage will be described. FIG. 5 is a schematic diagram for explaining the control method of the pressurizing mechanism according to the first embodiment. FIG. 5A shows the state of the frame structure 101 at the time when the movement in the first stage is stopped.
(B) shows the second part after the movement of the movable part 1a is restarted.
The state of the frame structure 101 at the time when the stepwise movement is stopped is shown. In the movement in the second step, the distance (the longest distance in the example shown in FIG. 5) between the outer surfaces of the rod-shaped support portions 102a and 102b is set to a predetermined distance W1.
It will be stopped when it becomes. Since the rod-shaped support portion 102b is in contact with the fixed portion 1b, the rod-shaped support portion 1b is pressed before and after pressing.
The position of the outer surface of 02b does not change. Therefore, when the position at which the movable portion 1a is finally stopped is set in advance, when the distance between the outer side surfaces of the rod-shaped support portions 102a and 102b becomes the predetermined distance W1, the second stage The movement can be surely stopped.

Subsequent steps for manufacturing the mask structure are the same as conventional ones. That is, the mask 110 is placed on the upper surfaces of the rod-shaped support portions 102a and 102b while maintaining the pressure applied by the pressure mechanism. Then, the rod-shaped support portion 10
2a, 102b and strips 112a, 112b are fixed by welding or the like. Next, after this fixing step is completed, the movable portion 1a is moved in the opposite direction to the above, so that the rod-shaped support portions 102a, 102a by the above-mentioned pressing mechanism are formed.
Release the pressure on 02b. As a result, the frame structure 1
By the restoring force of 01, the rod-shaped support portions 102a, 102b
Move away from each other. Along with that, obi 1
12a and 112b are similarly displaced, and as a result, the strip 11
The plurality of grid element bodies 111 are stretched by the tension applied from 2a and 112b.

In the above description, the case where the pressurization is performed by the first and second stages of movement has been described, but it is not always necessary to perform the two stages of movement. Even when the pressure is applied only in one step, the members 3a1 to 3a4,
This is because 3b1 to 3b4 serve as a cushioning material and absorb variations in the shape of the frame structure 101.
For example, in a case where a part of the outer side surface of the rod-shaped support portion 102a has a portion which is projected more than other portions and the member 3a1 comes into contact with the portion before the other members 3a2 to 3a4. However, due to the concentration of pressure, the member 3a1 greatly expands in the lateral direction, and the other members 3a2 to 3a4 also come into contact with the outer surface of the rod-shaped support portion 102a during that time. in this way,
The displacement amount of the movable portion 1a does not directly correspond to the displacement amount of the rod-shaped support portion 102a, but the deformation of the member 3a1 absorbs the variation in the shape of the frame structure 101.

As described above, according to the pressing mechanism according to the first embodiment, the rod-shaped supporting portions 102a and 102a are applied to the tip ends of the projecting structures 2a1 to 2a4 and 2b1 to 2b4 by pressing.
The members 3a1 to 3a1 that can be deformed according to the shape of each outer surface of b.
a4, 3b1 to 3b4 are attached respectively.
Therefore, good surface contact can be obtained between the protruding structures 2a1 to 2a4, 2b1 to 2b4 and the rod-shaped support parts 102a and 102b. Therefore, the rod-shaped supporting portions 102a and 102b are not locally deformed as in the case of the conventional point contact, and the rubber members 3a1 to 3a4 and 3b1 to
3b4 is unlikely to slip between the rod-shaped support portions 102a and 102b. Therefore, it is possible to suppress the generation of wrinkles and pitch unevenness in the mask 110 while ensuring a stable tension distribution. In particular, the rod-shaped support portions 102a, 10
When the wall thickness of 2b is reduced to, for example, 3 mm or less, the displacement amount of the rod-shaped support portions 102a and 102b due to the pressurization becomes large, so that the effect of the first embodiment becomes remarkable.

Further, according to the method of controlling the pressurizing mechanism according to the first embodiment, the second step is performed when the distance between the outer side surfaces of the rod-shaped supporting portions 102a and 102b reaches the predetermined distance W1. Movement is stopped. Therefore, the frame structure 1
Even if the dimension of 01 varies, the positions of the rod-shaped supporting portions 102a and 102b are always constant in the frame structure 101 at the time when the movement in the second stage is stopped. Therefore, the mask 110 and the rod-shaped support portions 102a and 102b are welded together by using a welding mechanism having a simple structure provided with an electrode that can simply travel on a fixed track, without using a Narai welding mechanism having a complicated structure. can do.

Embodiment 2. In the first embodiment, the hollow member 3a1 whose internal space is filled with air or the like.
~ 3a4, 3b1 ~ 3b4 has been described, the member 3
The pressure (internal pressure) in the internal spaces of a1 to 3a4 and 3b1 to 3b4 may be adjusted. Each member 3a1-3
It is possible to adjust the internal pressure by providing inlets and outlets for air and the like in a4, 3b1 to 3b4 and taking air in and out through the inlets and outlets. Specifically, a pressure gauge for detecting the internal pressure is provided on each of the members 3a1 to 3a4, 3b1 to 3b4, and when the internal pressure is lower than a predetermined value, air or the like is injected or the frame structure 101 is sandwiched between the pressure gauges. When the balance of the internal pressure between the symmetrically opposed members (for example, the members 3a1 and 3b1) becomes poor, a control method of injecting air or the like into the member having the lower internal pressure can be considered. Such control may be performed manually or automatically by the device.

As described above, according to the pressurizing mechanism according to the second embodiment, it is possible to adjust the internal pressure of the members 3a1-3a4, 3b1-3b4, so that the protruding structures 2a1-2a are formed.
The pressure applied when the rod-shaped support portions 102a and 102b are pressed by the rods 4, 2b1 to 2b4 can be adjusted, and more detailed pressurization control can be performed by the pressurizing mechanism.

Embodiment 3. In the first embodiment, the hollow member 3a1 whose internal space is filled with air or the like.
.. 3a4, 3b1 to 3b4 have been described, the internal spaces of the two members (for example, the members 3a1 and 3b1) that press the symmetrical positions of the rod-shaped support portions 102a and 102b are connected to each other by a flexible hollow tube (for example, They may be connected to each other by a rubber tube). Specifically, the internal spaces of the members 3a1 and 3b1, the members 3a2 and 3b2, the members 3a3 and 3b3, and the members 3a4 and 3b4 are connected to each other.

As described above, according to the pressurizing mechanism according to the third embodiment, the internal spaces of the two members that press the symmetrical positions of the rod-shaped supporting portions 102a and 102b are connected to each other, so that these two members can be connected to each other. It is possible to move air and the like between the members. As a result, the pressures in the internal spaces of these two members can be made uniform, and the rod-shaped support portions 102a and 102a.
It becomes possible to pressurize the symmetrical position of b with good balance.

[0036]

According to the first aspect of the present invention, the member attached to the tip of the projecting structure is deformed according to the shape of the outer side surface of the rod-shaped support section by pressurization. The structure and the rod-shaped support portion are in surface contact along the shape of the outer surface of the rod-shaped support portion. Therefore, unlike the case of point contact, the rod-shaped support portion is not locally deformed,
It is possible to suppress wrinkles and pitch unevenness from occurring on the mask.

According to the second aspect of the present invention, by adjusting the pressure of the internal space of the member, it is possible to adjust the pressure applied by the projecting structure to the rod-shaped support portion.

According to the third aspect of the present invention, the pressure in each internal space of the paired members can be made uniform. As a result, it becomes possible to press the symmetrical positions of the rod-shaped support portions in a well-balanced manner by the paired protruding structures.

According to the fourth aspect of the present invention, even if the dimensions of the frame structure vary, the pair of rod-shaped members are pressed in the frame structure after being pressed by the pressing mechanism. The distance between the supports is constant. Therefore, it is possible to avoid using the Narai welding mechanism having a complicated structure,
It is possible to weld the mask and the rod-shaped support portion by using a welding mechanism having a simple structure including an electrode that can simply travel on a fixed track.

Further, according to the fifth aspect of the present invention, even when the dimensions of the frame structure are varied, the frame structure after being pressurized by the pressure mechanism in the step (a) is used. , The distance between the pair of rod-shaped support portions is constant. Therefore, it is possible to avoid the use of the Narai welding mechanism having a complicated structure, and it is possible to weld the mask and the rod-shaped support portion by using the welding mechanism having a simple structure provided with an electrode that can simply travel on a constant track.

[Brief description of drawings]

FIG. 1 is a top view showing a pressure mechanism according to a first embodiment of the present invention together with a frame structure.

2A to 2C are top views sequentially showing steps of pressing the frame structure by the pressing mechanism according to the first embodiment of the present invention.

3A to 3C are top views sequentially showing steps of pressing the frame structure by the pressing mechanism according to the first embodiment of the present invention.

FIG. 4 is a top view showing a part of FIG. 3 extracted and enlarged.

FIG. 5 is a schematic diagram for explaining a control method of the pressurizing mechanism according to the first embodiment of the present invention.

FIG. 6 is a perspective view showing the structure of an aperture grille type mask structure.

FIG. 7 is a top view showing a structure of a conventional first pressing mechanism.

FIG. 8 is a top view showing a structure of a conventional second pressing mechanism.

FIG. 9 is a top view showing the structure of a third conventional pressing mechanism.

FIG. 10 is a schematic diagram for explaining a conventional method for controlling a pressing mechanism.

FIG. 11 is a perspective view showing a situation in which welding is being performed by the Narai welding mechanism.

[Explanation of symbols]

1a movable part, 1b fixed part, 2a1-2a4, 2b1
2b4 Projection structure, 3a1-3a4, 3b1-3b4
Element.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Keisuke Ito             2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo             Inside Ryo Electric Co., Ltd. F term (reference) 5C027 HH23

Claims (5)

[Claims] 1. A grid element body for obtaining a mask assembly in which a plurality of grid element bodies are stretched between a pair of rod-shaped support portions connected to each other via an elastic support portion. When fixing the mask having the and the frame structure having the elastic support portion and the rod-shaped support portion to each other,
A pressing mechanism for pressurizing an outer surface of the rod-shaped support portions in a direction in which the pair of rod-shaped support portions approach each other, and a plurality of projecting structures each having a tip end portion that abuts against the outer surface when pressure is applied. And a member capable of being deformed according to the shape of the outer side surface by pressure is attached to each of the tip portions of the plurality of protruding structures. 2. The pressurizing mechanism according to claim 1, wherein the member is a hollow member whose pressure in the internal space can be adjusted. 3. The plurality of projecting structures include paired projecting structures that press symmetrical positions of the pair of rod-shaped support portions, and the interior of the member respectively attached to the pair of projecting structures. The pressurizing mechanism according to claim 2, wherein the spaces are connected to each other. 4. The pressurization according to claim 1, wherein the pressurization is controlled to be stopped when the distance between the pair of rod-shaped support portions reaches a predetermined distance. mechanism. 5. A mask structure in which a plurality of grid elements are arranged in a stretched state between a pair of rod-shaped support portions connected to each other via an elastic support portion, A step of pressing the outer surface of the rod-shaped support portion by a pressure mechanism in a direction in which the pair of rod-shaped support portions approach each other; and (b) the grid element while maintaining the pressure applied in step (a). A step of fixing a mask having a body on the rod-shaped support part; and (c) releasing the pressure applied by the pressure mechanism after completion of the step (b), in the step (a), The pressurizing mechanism is controlled to stop further pressurization when the distance between the pair of rod-shaped support portions reaches a predetermined distance.
Method of manufacturing mask structure.