JPH1015755A - Automatic assembling method and part inserting device for cathode ray tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic assembling method for a cathode ray tube, by automatically positioning without turning over a workpiece flowed from a preceding process and inserting an automatically supplied clip into a clip insertion hole so as to feed the workpiece fully automatically to the next process. SOLUTION: A clip inserting device is constituted of a position adjusting part performing position adjustment of a glass panel (workpiece) 1, a positioning part for aligning a hole position of an internal magnetic shield 2 and a clip insertion hole 50, a clip holding/inserting part for holding a clip 4 for fixing the internal magnetic shield 2 to a mask frame 3 and inserting into the clip insertion hole 50 and a clip supply part for supplying the clip 4 from a parts feeder 60 to the clip holding/inserting part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of automatically assembling a cathode ray tube and a component insertion device, and more particularly to a clip insertion device for fixing an internal magnetic shield for incorporating an internal magnetic shield into a cathode ray tube.

[0002]

2. Description of the Related Art In a cathode ray tube such as a television receiver,
By mounting an internal magnetic shield (IMS) inside the cathode ray tube, the effect of magnetism on the electron beam is eliminated.

FIG. 7 is a perspective view of a glass panel to which an internal magnetic shield is temporarily fixed. Inside the glass panel 1, an internal magnetic shield 2 is attached to the mask frame 3 by bonding. Here, the mask frame 3 is fixed by stud pins (not shown) formed on the inner surface of the skirt portion of the glass panel 1. The mask frame 3 has a long side surface and an internal magnetic shield in advance. The two side surfaces are temporarily fixed by welding or the like. Therefore, the mask frame 3 is placed in the glass panel 1 with a certain degree of variation in the position in the Χ and Y directions with respect to the internal magnetic shield 2 attached to the glass panel 1.

Therefore, rectangular clip insertion holes 50 are formed at the four corners of the bottom surface of the internal magnetic shield 2 and the mask frame 3 in a state where they are joined to each other. By inserting the clips 4 into the insertion holes 50 respectively, the mask frame 3
, The internal magnetic shield 2 is accurately positioned and fixed.

FIG. 8 is a component configuration diagram for explaining an assembly process of the internal magnetic shield. As shown in this figure, the glass panel 1 is transported while being held downward, and in this state, an inner magnetic shield 2 is provided inside the glass panel 1.
Is temporarily inserted from below. The mask frame 3 has springs 3a in which fitting holes are formed. The springs 3a are fitted with the stud pins 1a formed on the inner surface of the skirt portion of the glass panel 1, so that the mask frame 3 is attached to the glass panel 1. Are held together within. Further, after the mask frame 3 and the clip insertion hole 50 formed in the internal magnetic shield 2 are aligned with each other, the clip 4 is inserted, whereby the mounting of the internal magnetic shield 2 is completed.

[0006] It is conceivable to automate this assembly process by a machine. In this case, the clip insertion hole 50 is positioned so as to overlap between the mask frame 3 and the internal magnetic shield 2 before inserting the clip. It is necessary to make adjustments. Moreover, it is necessary to minimize the assembly error between the mask frame 3 and the glass panel 1 for this purpose.
Therefore, the manufacturing cost increases. Therefore, conventionally, clips have been manually inserted by using parts manufactured with a certain degree of assembly error.

When the clip 4 is manually inserted, the glass panel 1 in which the mask frame 3 is incorporated is moved to the position shown in FIG.
A step of turning over to the state shown in (1) is required. Also, in order for one person to insert the clips 4 at four positions inside the glass panel 1 to fix the internal magnetic shield 2,
The user holds the clips 4 and manually inserts and assembles them four times.

[0008]

As described above, the problem with the conventional manual operation is that when the internal magnetic shield 2 is assembled by inserting the clip 4, a reversing device for turning over the glass panel 1 of the workpiece is required. It is to become. In addition, when the glass panel 1 is turned over, the chances of dust and the like entering the inner surface of the glass panel 1 increase, which is a problem in maintaining product quality. Another problem is that a plurality of clips 4 are required for assembling, and the clips 4 are changed.
It took a long time, which led to an increase in the number of staff for line construction.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and automatically performs positioning without turning over a work (work) flowing from a previous process, and automatically supplies a clip. Is inserted into a clip insertion hole, and a workpiece is automatically sent to the next process, thereby automatically assembling a cathode ray tube.

Another object of the present invention is to provide an automated component insertion device which replaces the conventional manual operation.

[0011]

According to a first aspect of the present invention, there is provided a component having an inserting means for fixing a loaded workpiece and inserting a predetermined component into a component insertion hole formed in the workpiece. In the insertion device, the insertion means has a positioning pin disposed on the same floating plate, and the floating plate is aligned with the component insertion hole by inserting the positioning pin into the component insertion hole. Then, the component is inserted into the component insertion hole.

According to a second aspect of the present invention, there is provided a component insertion device for inserting a clip into a clip insertion hole passing through a mask frame in a glass panel constituting a cathode ray tube and an internal magnetic shield fixed to the mask frame. At
A base plate disposed at a position corresponding to the glass panel, a floating plate slidably disposed on the base plate, a positioning pin moving vertically on the floating plate, and locking the floating plate on the base plate Locking means, and a clip insertion means for inserting the clip into the clip insertion hole, wherein the positioning pin is inserted into the clip insertion hole, whereby the hole between the mask frame and the internal magnetic shield is formed in the glass panel. While aligning the positions, aligning the floating plate with these holes, fixing the floating plate to the base plate with the locking means, moving the base plate by a predetermined distance, and holding the clip Aligning the lip insertion hole, in which the clip was to be inserted into the clip insertion hole.

According to a third aspect of the present invention, in the component insertion device according to the second aspect, the clip inserting means inserts the clip from below the glass panel.

According to a fourth aspect of the present invention, the lifting mechanism of the clip inserting means is controlled to insert the clip with two strokes and different pressures.

According to a fifth aspect of the present invention, a clip is inserted by a clip insertion device so as to pass through a clip insertion hole of a mask frame disposed in a glass panel constituting a cathode ray tube and an internal magnetic shield, and the mask frame is inserted. A method for automatically assembling a cathode ray tube wherein an inner magnetic shield is fixed to the glass panel, wherein a step of adjusting the position of the glass panel, a step of supplying the clip to the clip insertion device, Inserting a pin to align the hole positions of the mask frame and the internal magnetic shield in the glass panel, aligning the clip with the clip insertion hole, and inserting the clip into the clip insertion hole; Is included.

According to a sixth aspect of the present invention, when the type of the cathode ray tube changes, the position of the cathode ray tube is adjusted according to the size of the glass panel.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
An automatic assembling method of a clip insertion device and a cathode ray tube according to an embodiment of the present invention will be described.

Embodiment 1 FIG. 1 is a diagram illustrating a schematic configuration of a clip insertion device according to a first embodiment of the present invention, and FIG. 2 is a block diagram illustrating components of the clip insertion device in block units.

As shown in these figures, the clip inserting device according to the first embodiment includes a position adjusting section 10 for adjusting the position of a glass panel (work) 1, and a clip insertion between a mask frame 3 and an internal magnetic shield 2. A positioning portion 20 for adjusting the position of the hole 50 and a clip holding / inserting portion 30 for holding the clip 4 for fixing the internal magnetic shield 2 to the mask frame 3 and inserting the clip 4 into the clip insertion hole 50.
And a clip supply unit 40 that supplies the clip 4 from the parts feeder 60 to the clip holding / inserting unit 30.

Here, an internal magnetic shield 2 is attached to a mask frame 3 inside a glass panel 1 serving as a work, similarly to the conventional example. The mask frame 3 has springs 3a formed with fitting holes, and these are fitted with stud pins 1a formed on the inner surface of the skirt portion of the glass panel 1, whereby these three members are integrated. And supplied.

The position adjusting section 10 has a roller conveyor 11 connected to an assembling process before and after the clip 4 is inserted.
A cylinder 12, a reference stopper member 13, and the like for positioning the glass panel 1 and further fixing and holding the glass panel 1 in order to insert the clip 4 from below the glass panel 1 conveyed by the roller conveyor 11. It has. Note that an air cylinder can be used as the cylinder 12.

The positioning section 20 is provided with the roller conveyor 1
1, a floating plate 22 slidably disposed on the base plate 21, and a floating plate 2
2 is provided with a cylinder 23 for vertically moving the positioning pin 23 a in the vertical direction, and a lock cylinder 24 for locking the floating plate 22 on the base plate 21. The tip of the positioning pin 23a is tapered so that it can be inserted into the clip insertion hole 50 formed in the mask frame 3 and the internal magnetic shield 2, and has the same shape as the clip insertion hole 50 at the intermediate portion, and cannot be further inserted. It is configured to be gradually thicker.

The clip holding / inserting part 30 is
And a cylinder 32 for raising the clip chuck 31.
And is provided in parallel with the positioning portion 20 at a distance L on the floating plate 22.

The base plate 21 has a cylinder 33 for moving the positions of the positioning portion 20 and the clip holding / inserting portion 30 together with the floating plate 22 by a predetermined distance L equal to the distance L.

The clip supply unit 40 is provided with the parts feeder 6
A clip chuck 41 for grasping the clip 4 aligned at 0 and supplying the clip 4 to the clip chuck 31 of the clip holding / inserting unit 30, and gripping the leading end of the clip 4 in the insertion direction and transporting the clip 4 in the lateral direction; The clip 4 is guided by the clip chuck 41 so that the clip 4 is
1 and a guide mechanism 42 for transporting the sheet to the same.

Next, each of the parts 10 to 40 constituting the clip insertion device will be described in more detail.

FIG. 3 is a top view showing an example of the position adjusting unit 10 according to the first embodiment. The adjusting unit 10 is moved to a predetermined position in the clip insertion device in a state where the internal magnetic shield 2 temporarily fixed to the mask frame 3 is fitted to the glass panel 1 by the roller conveyor 11 for transporting the work in the downward direction in the figure. It is carried in. The roller conveyor 11 includes a cylinder 12 and a reference stopper member 13 for determining the position of the glass panel 1 in the left-right direction on both left and right sides thereof, and a cylinder 14 and a reference stopper member 15 for determining the position in the front-rear direction. ing.

In the position adjusting unit 10, the glass panel 1
Arrives at the reference stopper member 15 provided at a predetermined position, the positioning cylinder 14 is raised to the panel transfer surface, and the glass is moved while the two surfaces of the panel skirt portion are brought into contact with the reference stopper members 13 and 15, respectively. Panel 1
The other surface of the glass panel 1 is pushed by the cylinders 12 and 14, and the accurate position of the glass panel 1 is determined by the reference stopper members 13 and 15. Thereafter, when the clip 4 is inserted into the insertion hole 50 of the internal magnetic shield 2, the positions in the Χ and Y directions are fixed by the cylinders 12 and 14 so that the glass panel 1 does not shift. When unloading the glass panel 1, the reference stopper member 15 is lowered below the panel transfer surface.

By changing the width of the roller conveyor 11 constituting the panel conveying surface of the position adjusting unit 10, it is possible to cope with a change in the size of the glass panel 1 even when the pipe type changes.

FIG. 4 is a side view showing an example of the positioning section 20 and the clip holding / inserting section 30 according to the first embodiment.

The inner magnetic shield 2 and the mask frame 3 temporarily fixed with variations in the で direction and the Y direction (perpendicular to the plane of FIG. 4) in the glass panel 1
In order to fix the clip insertion holes, it is necessary to align the positions of the clip insertion holes 50 formed respectively. Therefore, the lock cylinder 24 is set in the unlocked state, and the positioning pin 23a is vertically moved by the cylinder 23 of the positioning unit 20 disposed on the floating plate 22 with respect to the glass panel 1 whose position is fixed by the position adjusting unit 10. To raise. When the positioning pin 23a starts to rise, the clip insertion hole 50 of the internal magnetic shield 2 and the mask frame 3 is formed.
Even if the positioning pins 23a are displaced with respect to the clip insertion holes 50, the relative positions of the internal magnetic shield 2 and the mask frame 3 change with the rise of the positioning pins 23a. Plate 22
Move, any displacement can be eliminated at the same time. That is, at the position where the positioning pin 23a cannot be further raised, the above-mentioned displacement is eliminated. Therefore, by locking the lock cylinder 24 in this state, the floating plate 22 on the base plate 21 is positioned with respect to the clip insertion hole 50. .

After the positioning is completed, the positioning pins 23a are lowered, and the base plate 21 is moved by a predetermined distance L while the floating plate 22 is fixed. At this time, the clip 4 is held by the clip chuck 31 in the clip holding / inserting section 30 provided at a position separated from the positioning section 20 and the base plate 21 by a predetermined distance L. Since the clip chuck 31 is moved to the position of the positioning pin 23a, the clip 4 of the clip chuck 31 can be aligned with the center position of the clip insertion hole 50. The clip 4 is inserted into the clip insertion hole 50 by the clip holding / inserting section 30 in two stages of temporary insertion and main insertion as described later.

FIG. 5 is a view for explaining a two-stage clip insertion operation by the clip holding / inserting section 30. When the clip chuck 31 moves to the center position of the clip insertion hole 50, the clip 4 is inserted into the clip insertion hole 50 as shown in FIG. At this time, the glass panel 1
Due to dimensional differences between products and variations in the height position of the temporarily fixed mask frame,
The height from 0 to the clip insertion hole 50 varies.

Therefore, in order to absorb variations in the height of the clip insertion hole 50, the stroke of the upward movement of the clip chuck 31 is set in two stages as shown in FIG. That is, the stroke L ₁ of the first stage is assumed to be stopped in a state where the clip 4 is temporarily inserted to a certain position relative to the clip insertion hole 50, and a clip chuck 31 at the time the released state, the following two-stage in the stroke L _2, and lift the clip 4 with a smaller pressure. Therefore, even if the height of the clip insertion hole 50 varies in the range of the _second stroke L2, the clip 4 held by the clip chuck 31 is surely raised to the proper mounting position, and Since the clip can be attached to the clip 50, insertion failure due to excessive insertion or insufficient insertion of the clip can be eliminated.

In the clip holding / inserting section 30, a cylinder for moving the base plate 21 is provided in addition to the cylinder 33 shown in FIG. Of 4
One clip insertion hole 50 can be dealt with.
The positioning unit 20 and the clip holding / inserting unit 30
Correspond to the four clip insertion holes 50, respectively.
The set, the clip supply unit 40, and the parts feeder 60 are integrated with two adjacent
A total of two sets are provided, and supply of the clip 4 to the clip chuck 31 is performed by the adjacent clip holding / inserting unit 30.
However, the positioning and insertion of the clip 4 are performed simultaneously at four locations except that the clip 4 is sequentially performed.

FIG. 6 is an operation flowchart of automatic assembly by the clip insertion device of the first embodiment.

In step ST101, the glass panel 1 with the internal magnetic shield is carried into the clip insertion device by the roller conveyor 11. Next step ST102
Then, the position adjustment unit 10 positions the glass panel 1 on the roller conveyor 11.

In step ST103, the clip 4 is transferred from the clip supply unit 40 to the clip chuck 31 of the clip holding / inserting unit 30 and supplied. The clips 4 are supplied to the clip supply unit 40 one by one from a parts feeder 60 that matches the shape of the clip 4.

Next, in step ST104, it is determined whether or not the preparation in steps ST102 and ST103 has been completed, and if it is determined that the clip 4 can be inserted, the process proceeds to step ST105. If the preparation for insertion has not been completed, the clip 4 is supplied to the parts feeder 60 (step ST106), and the transfer of the clip 4 is waited.

In step ST105, the positioning unit 20
Of the clip insertion hole 5
Insert at 0. In the next step ST107, the clip 4 held by the clip chuck 31 of the clip holding / inserting section 30 is inserted into the clip insertion hole 50 of the mask frame 3 and the internal magnetic shield 2 arranged in the glass panel 1.
Insert

In step ST108, the glass panel 1 of the cathode ray tube in which the inner magnetic shield 2 is fixed to the mask frame 3 is carried out from the clip insertion device.

As described above, according to the clip insertion device of the first embodiment, the mask frame 3 and the internal magnetic shield 2
Can be inserted by an automatic assembly process without manual operation, so that the clip 4 can be inserted.
No personnel are required for the insertion work. In addition, the time required for inserting the clip 4 in the automatic assembly process is half that of the conventional manual operation, so that the line tact can be reduced and the productivity is improved.

Further, since the clip insertion operation is performed without turning over the glass panel 1, the chance of foreign substances such as dust entering the glass panel 1 is reduced, and the quality of the product is improved.

Further, since the clips 4 are supplied to the clip holding / inserting section 30 by the clip supply section 40, a predetermined number of clips 4 can be supplied to the parts feeder 60 in a batch. Efficiency is improved.

Embodiment 2 In the clip insertion device of the first embodiment, each component has been described as being controlled by the air cylinder. However, the present invention is not limited to air cylinder control, and may be configured by motor control, hydraulic control, or the like.

Also, an automatic assembling method of a cathode ray tube for inserting a clip 4 used for joining the mask frame 3 and the internal magnetic shield 2 and the clip inserting device have been described. In addition, it goes without saying that the present invention can easily be diverted as an automatic component insertion device that inserts a component into a predetermined hole of a workpiece as a workpiece.

[0047]

Since the present invention is configured as described above, it has the following effects.

According to the first aspect of the invention, when a predetermined component is inserted into the component insertion hole of the loaded workpiece, even if the workpiece has an assembly error, the manufacturing cost can be reduced. In addition, labor for assembling can be eliminated.

According to the second aspect of the present invention, the operation of inserting the clip for joining the mask frame and the internal magnetic shield can be automatically performed from manual operation.

According to the third aspect of the present invention, the time required to assemble the cathode ray tube by inserting a clip can be shortened with the automatic assembling, which is effective in shortening the line tact and improving the productivity.

According to the fourth aspect of the present invention, it is possible to eliminate insertion failure due to excessive insertion or insufficient insertion of the clip.

According to the fifth aspect of the present invention, there is no need to turn the mask frame and the glass panel upside down, and foreign matter such as dust is less likely to enter the glass panel, which is also effective in improving product quality. is there.

According to the sixth aspect of the invention, productivity can be improved corresponding to cathode ray tubes of different sizes.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a schematic configuration of a clip insertion device according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing components of the clip insertion device of FIG. 1 in block units.

FIG. 3 is a top view illustrating an example of a position adjustment unit according to the first embodiment.

FIG. 4 is a side view showing an example of the positioning unit 20 and the clip holding / inserting unit 30 according to the first embodiment.

FIG. 5 is a diagram illustrating a clip insertion operation in two stages according to the first embodiment.

FIG. 6 is an operation flowchart of automatic assembly by the clip insertion device of the first embodiment.

FIG. 7 is a perspective view of a glass panel to which an internal magnetic shield is temporarily fixed.

FIG. 8 is a component configuration diagram for explaining an assembly process of the internal magnetic shield.

[Explanation of symbols]

1 Glass panel, 2 Internal magnetic shield (IM
S), 3 mask frames, 4 clips, 21
Base plate, 22 floating base,
23a positioning pin, 31 clip chuck,
60 Parts feeder.

Claims (6)

[Claims] 1. A component insertion apparatus having an insertion means for fixing a loaded workpiece and inserting a predetermined component into a component insertion hole formed in the workpiece, wherein the insertion means has the same floating structure. Having a positioning pin disposed on a plate, by inserting the positioning pin into the component insertion hole, after aligning the floating plate with respect to the component insertion hole,
A component insertion device, wherein the component is inserted into a component insertion hole. 2. A component insertion device for inserting a clip into a clip insertion hole penetrating a mask frame in a glass panel constituting a cathode ray tube and an internal magnetic shield fixed to the mask frame, wherein: A floating plate slidably disposed on the base plate; a positioning pin moving vertically on the floating plate; and a locking means for locking the floating plate on the base plate. And a clip inserting means for inserting the clip into the clip insertion hole, and aligning the hole positions of the mask frame and the internal magnetic shield within the glass panel by inserting the positioning pin into the clip insertion hole. Along with this Aligning the floating plate with the holes, fixing the floating plate to the base plate with the locking means, moving the base plate by a predetermined distance to align the clip with the clip insertion hole, Is inserted in the clip insertion hole. 3. The component insertion device according to claim 2, wherein the clip insertion means inserts the clip from below the glass panel. 4. The component insertion device according to claim 3, wherein said clip insertion means is controlled such that its lifting mechanism inserts said clip in two-stage strokes and at different pressures. apparatus. 5. A clip is inserted by a clip insertion device so as to pass through a clip insertion hole between a mask frame disposed in a glass panel constituting a cathode ray tube and an internal magnetic shield, and the internal magnetic shield is inserted into the mask frame. An automatic assembling method for a cathode ray tube fixed, comprising: a step of adjusting a position of the glass panel; a step of supplying the clip to the clip insertion device; and inserting a positioning pin into the clip insertion hole. A step of aligning the hole positions of the mask frame and the internal magnetic shield within the glass panel; and a step of aligning the clip with the clip insertion hole and inserting the clip into the clip insertion hole. Automatic assembly method of cathode ray tube. 6. When the type of the cathode ray tube changes,
6. The method according to claim 5, wherein the position of the glass panel is adjusted according to the size of the glass panel.