JPH0233829A - Mounting of getter device in cathode-ray tube - Google Patents

Abstract

PURPOSE:To perform mounting easily and correctly by a method wherein a chuck part holds a getter spring to insert a neck tube, one of the links is bent to the side of a supporting plate followed by sliding the chuck part in the direction of the supporting plate for fitting the getter spring into the supporting plate. CONSTITUTION:A second link 24 and a chuck part 25 of a one joint robot 21 are made to operate, a chuck part 25 holds a getter spring 5 from top of a pallet for a getter in order to again put the one joint robot 22 in the upright state. Next, the drive of a first motor 32 makes a robot 22 holding the spring 5 to rise for making it to be inserted from a neck tube 1n into a tube body 1. Then, in a prescribed insertion position not interfered by an inner magnetic shielding member 12, the robot 22 stops rising and a second motor 36 is driven to raise a lever 28 in order to rotate the second link 24 to the wall surface side of a funnel centering about a gang axis 26. Next, an air cylinder 42 inside the link 24 is driven to make the chuck part 25 itself to slide forward for engaging an engaging pin 9 of the spring 5 with an engaging part 10a of the inside of a triangle groove 10 of a supporting plate 3 followed by opening the chuck part 25.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for mounting a getter device in a cathode ray tube;
In particular, the present invention relates to a method for inserting a getter spring into a support plate fixed to an anode button inside a tube through a neck tube.

[Summary of the invention]

The present invention provides a method for mounting a getter device in a cathode ray tube in which a getter spring is fitted to a support plate fixed to an anode button, in which a second link having a chuck portion is rotatably connected to a first link; Using a one-joint robot that uses an air cylinder to open, close, and slide the chuck, the getter spring is gripped by the chuck and inserted through the neck tube. @2 After bending the link toward the support plate, slide the chuck part toward the support plate and fit the getter spring to the support plate, making it possible to easily and accurately attach the getter device. It is.

[Conventional technology]

A cathode ray tube requires a getter to maintain the degree of vacuum inside the tube. As a method of supporting the getter, a getter support method 1.11 has been considered in which the getter is supported on the anode button as shown in FIGS. 5 and 6.

This getter device (11) consists of a support plate (3) that is press-fitted and fixed to the shaft (2a) of an anode button (2) embedded in the funnel of the tube body (1), as shown in FIGS. 5 to 7.
and a getter container (4) supported by this support plate (3).
It consists of a getter spring (5) with an attached getter spring (5). The support plate (3) has an anode button shaft (2) in its center.
a) has an insertion hole (6) that is press-fitted into the insertion hole (6), a plurality of clamp claws (8) formed by radial notches (7) are provided around the insertion hole (6), and a plurality of clamp claws (8) are provided on one end side. It widens toward the end, and the engagement pin (
Triangular groove 20 having an engaging portion (10a) that engages with 9)
) is formed.

The getter spring (5) is formed to be wider on the base side than the middle and narrower on the tip side, and a getter container (4) is attached to one narrow end, and an engagement pin (9) is attached to the middle part of the base side. Formed by welding.

Then, the insertion hole (6) of the support plate (3) is press-fitted into the shaft (2a) of the anode button (2), and the support plate (3) is fixed to the shaft (2a) with the clamp claw (8). , the engagement pin <9) of the getter spring (5) is engaged with the engagement part (10a) of the triangular groove (■0) of the support plate (3), and the other end (5Δ) is placed on the shaft part (2a). When the getter device (11) is brought into contact with the anode button (2), the attachment of the getter device (11) to the anode button (2) is completed.

Conventionally, an insertion machine for inserting the getter spring (5) from the neck tube and fitting it into the support plate (3) fixed in advance to the shaft part (2d) of the anode button has been used.
A two-joint robot driven by wires was used. That is, although not shown, this insertion machine includes a first link, a second link rotatably connected to the first link so as to form a first joint, and a second joint to the second link. a third link rotatably connected to configure;
It has a chuck part that grips the getter spring provided on the third link, and drives the first wire for driving the first joint, the second wire for driving the second joint, and the chuck part. Third wires are each led out from the first link through the links.

In this insertion machine, the two-joint robot robot 1- is inserted into the neck tube in an upright state with the getter spring (5) gripped by the chuck part, and then the first
Rotate the joint and second joint, getter spring (5)
is brought to the position of the support plate (3) fixed to the anode button and fitted.

[Problem to be solved by the invention]

However, in conventional 11-ton machines, the second link, third link, etc. are pulled and driven by wires, so the wires stretch, etc., and the second link.

There was a problem that the position reproducibility and durability of the third link were poor. In addition, it has two joints, and the drive of the second joint is pulled by the wire passing through the first joint, so the wire at the second joint depends on the balance of forces between the first and second joints. When pulled, the first joint also moves, making it difficult to control the movement.

In view of the above-mentioned points, the present invention provides a method for mounting a getter device in a LiB overcoat tube, which allows the above-mentioned getter device to be mounted easily and accurately.

[Means to solve the problem]

The present invention provides a method for installing a getter device in which a getter spring (5) is inserted through a neck tube and fitted to a support plate (3) fixed to an anode button (2). (25) is rotatably connected to the second link (24) having a chuck part (25).
5) The opening/closing and sliding operations are performed using an air cylinder.
Using the one-joint robot (22), grip the getter spring (5) with the chuck part (25), insert the one-joint robot from the neck tube, and attach the second link (24) to the support plate (
3) After bending it to (III), slide the chuck part (25) toward the support plate (3) and remove the getter spring (
5) into the support plate (3).

In the 1st Seki&'f robot (22), the cylindrical first link (23) and the second link (24) connect to the connecting shaft (26).
The first joint is rotatably supported by the first joint. The end of the lever (28) that passes through the first link (23) is rotatably attached to the second link (24) about a shaft (29), and when the lever (28) moves in the axial direction, the end of the lever (28) passes through the first link (23). The second link (24) is configured to rotate from the first joint (27).

Also, at the tip of the second link (24) there is an air cylinder (
42), a slidable chuck part (25) is disposed, and this chuck part (25) is configured to be opened and closed by another air cylinder (47).

[Effect]

Hold the getter spring (5) in the chuck part (25), and insert the joint robot 1-(22) into the tube body (1) from the neck tube (in) in an upright position.At the predetermined insertion position, Operate the lever (28) to open the second link (24).
) to the support plate (3) 1) III, and then, while gripping the getter spring (5), slide the Nayasoku part (25) using the air cylinder (42) to maintain the getter spring link (5). The retaining part (10a) of the support plate (3) that fixes the joint bottle (9) to the anode button (2)
). Next, the chunk portion (25) is opened, the getter spring (5) is released, and its end portion (58) is brought into contact with the shaft portion (2a) of the anode button. After that, the chuck part (25) is moved back and the second link (2=1
) upright, then put the 1-joint robot ]・ into the neck tube (1n
) to return it outside the jurisdiction.

Since the second link (24) is thus driven via the lever (28), the position repeatability of the second link (24) is extremely good. And the first. Since an l-joint robot with a second link is used, there is no malfunction and control is easy. Further, since the opening/closing operation and sliding operation of the chuck part (25) are performed by the air cylinders (42) and (47), there are fewer malfunctions. Therefore, by such an operation, the getter spring (5) can be easily attached to the support plate (3) and can be carried out in the correct ff(t).

〔Example〕

Hereinafter, an example of a method for mounting a getter device of the present invention will be described with reference to the drawings.

FIG. 1 shows the inserter of the getter device (11) that is used in this example. In the figure, (1) is a getter device (11
) is shown, for example, a small cathode ray tube body to which the anode button (2) is attached.
) is fixed with the support plate (3) shown in FIGS. 5 and 6 described above, and a box-shaped internal magnetic shield member (12) is arranged (see FIG. 2). (21) shows the entire insertion machine, and (22) is an l-joint robot that grips the getter spring (5) and inserts it into the tube body (1). This l-joint robot (21) has a cylindrical first link (23) that can move in the axial direction (so-called vertical direction) and a second link (24) that is rotatably connected to the tip of the first link (23). and a chuck part (25) that grips the getter spring (5) provided at the tip of the second link (24). 1st
The link (23) and the second link (24) are connected to the connecting shaft (26).
) is rotatably supported by the first joint (27).
is configured. The end of a lever (28) penetrating through the first link (23) is rotatably attached to the end of the second link (24) by a shaft (29). The axial movement causes the second link (24) to rotate relative to the first link (23) from its first joint (27).

The first link (23) is threadedly supported by the screw shaft (31) via the support member (30), and is rotated by the rotation of the screw shaft (31) based on the drive of the first motor (32). 'It is made to move.' (33) is a gear mechanism.

Similarly, the lever (28) operates the second link (24).
) also has its lower end connected to the screw shaft (35) via the support member (34).
), and is moved up and down by the rotation of the screw shaft (35) based on the drive of the second motor (36).

On the other hand, the nayanok part (
25) consists of a pair of hooks, a first chuck half (39) having a first hook (37) and a second chuck half (40) having a second hook (38).

Here, when the getter brick (5) is gripped by the chuck part (25), the gripped part of the getter spring (5) is curved around the engagement pin (9), for example. The second hook (38) is provided on the axis (41) of the second link (24) (see Figure 3), and the second hook (38)
37) is provided at a position away from its axis (41).

The nayanok part (25) is connected to the second link (
24), and independently of this slide, the second chuck half (40) can slide axially against the first chuck half (39) using an air cylinder (i.e., the chuck part can be opened and closed). configured so that it can perform the following actions: Therefore, the second link (24) and the second chuck half (40) are each formed of an air cylinder, and their piston lofts are fixed to the first half (39). A specific example of this configuration is shown in FIG.

That is, the second link (24) has an air cylinder (42).
The cylinder body has two piston rods (143) and (44) arranged in parallel with each other. One first piston rod (43) is hollow 1:
1 no] and the other second piston soto (44
) is formed by a solid rod. Both piston rods (43
) and (44) are both fixed to the first chuck half (39), and pass through them to the second chuck half (40).
will be extended to The second piston loft (44) is inserted into the groove (45) of the second chuck half-rest (40), and the groove (45)
A spring (46) is interposed between the first chuck half (39) and the second chuck half (40). This spring (46) always keeps the second chuck half-off (40
) is elastically biased in a direction away from the first chuck (39) (that is, the chuck part (25) is in the open state).

On the other hand, the second chuck (40) is configured with an air cylinder (47), and its piston rod also serves as the first piston rod (43) in the air cylinder (42) of the second link.

In this air cylinder configuration, C is the first air port (A
), the hollow first piston Roso I・(
43) Air passes through the second chuck half (40) and the air cylinder (47) in the first chuck half (40) is driven.
39), the second nail half body (40) is pulled toward the chuck portion (25), and the chuck portion (25) is brought into the closed state. However, at this time, since the first piston rod (43) pushes out the first yank flat body (39) by the difference in the effective cross-sectional area of the hollow first piston rod (43), air also flows from the third air port (C). is introduced to suppress the movement of the first bis)-syrin t' (43).

When air is introduced through the second air port (B) (at this time, air is removed from the third air port (C)), the solid second piston rond (44) is driven, and the chuck tl (( (25)
moves forward while maintaining the relative positional relationship of both chucks (39) and (40), and conversely, when air is introduced from the third air port (C), both piston rods (43) and (44)
) moves forward, and the chuck extension 5 (25) retreats while maintaining the relative positional relationship between the two chucks (39) and (40).

Next, the getter spring (5) is attached to the support plate (3) fixed to the anode button (2) inside the tube using the above-mentioned insertion machine (21) as shown in FIGS. 2 and 3.
This will be explained with reference to the figures.

In the cathode ray tube body (1), the support plate (3) is fitted and fixed onto the shaft part (2a) of the anode button facing into the funnel when the funnel body is assembled before the panel and funnel are sealed ( After sealing the panel and the funnel, the cathode ray tube body (1) is placed in the insertion machine (21) and positioned.The positioning is performed at the position of the anode button (2) (that is, the position of the support plate (3)). This is done by the cone receiver (48) and the neck chuck part (49), including rotation so that it is at a predetermined position.

The one-joint robot (22) of the insertion machine (21) has a tube body (1)
(See Figure 1). At this time, the chuck portion (25) at the tip is in an open state as shown in FIG. 3A due to the elastic biasing force of the spring (46). Although not shown, the second link (24) and chuck part (25) of the l-joint robot (2) are operated, and the getter spring (5) is grasped from above the getter bullet by the chuck part (25). , again bring the articulated robot I-(22) into the upright position (see Figure 3B).

The getter spring (5) is gripped by the chuck part (25) using the first and second hooks (37) and (38) at both ends (
13a) and (13b) are sandwiched between them. next,
The getter spring (5) is driven by the first motor (32).
The one-joint robot (22) grasping the is raised and inserted into the tube body 1) from the neck tube (In) (see operation ① in Figure 2). After stopping the lifting of the one-joint robot (22) at a predetermined insertion position where it will not be interfered with by the internal magnetic shielding member (12), the second motor (36) is driven to raise the lever (28). Link (2i)
is rotated around the connecting shaft (26) toward the wall of the funnel (see operation ① in Fig. 2 and C in Fig. 3). Next, the air cylinder (42) in the second link (24) is driven to slide the chuck part (25) itself forward, and the engagement pin (9) of the getter spring (5) is moved to the support plate (3). ) of the triangular groove (10)! 1! ! End engaging part (10
a) (see operation ① in Figure 2 and figure 3). Next, open the chuck part (25) (i.e., connect the air cylinder (47) and spring (46) to the second
Slide the chuck (40) forward to release the getter spring (5) from the chuck part (25), and insert the end (58) of the getter spring (5) into the shaft (2a) of the anode button (2). ) (second
(See operation ① in the figure and see Figure 3 C). This completes the attachment of the so-called game device (11) to the anode button (2).

Since there are variations in the surface and funnel glass, connect the tip of the electric micrometer (50) from the outside with the anode button (
2), and the measured value is fed back to the second motor (36) to control the rotation of the second link (24), that is, the distance M11 g between the funnel inner wall surface and the chuck part (25). It is possible to control the value at a constant level.

After installation, the chuck part (25) is moved back by the air cylinder (42), the second link (24) is made to stand upright,
Lower the 1-joint robot 7 (22) and attach the neck tube (1n)
Take it out of the tube body and place it in the specified position 11. Return to

According to the method of mounting the getter device described above, the L-joint robot (22) is used to grasp the getter spring (5) and insert it into the tube body (1) through the neck tube (1n).
The second link (24) is connected to the support plate (3) from the first joint (27).
) side, and then slide the chuck part (25) holding the getter spring (5) in the direction of the support plate (3) to fit the getter spring (5) into the support plate (3). , the getter spring (5) can be installed easily and accurately.

On the other hand, in the single-joint robot (22), the rotation of the second link (24) is performed by vertically driving the lever (28), so the reproducibility of the rotational position of the second link (24) is good. . Moreover, since the opening/closing operation of the chuck part (25) and the sliding movement (forward, backward) of the chuck part (25) are performed by the air cylinders (42) and (47), there are few malfunctions. Furthermore, since a one-joint robot is used, there is no malfunction and control is easy, and the getter spring (5) can be easily and accurately attached to the support plate (3).

〔Effect of the invention〕

According to the present invention, when inserting the getter spring through the neck tube and fitting it to the support plate fixed to the anode button, the first link and the second link having the chuck portion are rotatably connected, Using an l-joint robot that opens, closes, and slides the chuck part using an air cylinder, the getter spring is grasped by the chuck part, and it is pulled out from the neck tube, and the second link is bent toward the support plate.
By fitting the getter spring to the support plate by sliding the chuck portion toward the support plate, the getter spring can be easily and accurately attached to the support plate.

Since the insertion machine is a one-joint robot, there is no malfunction and control is easy. In particular, the second link is driven by a lever, and the opening/closing and sliding of the chuck part are performed by an air cylinder, so that the position reproducibility of the second link and the chuck part is good.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an example of an insertion machine applicable to the present invention;
FIG. 2 is a diagram showing its operating state, FIG. 3C is a diagram showing the operating state of the second link and chuck section, FIG. 4 is a sectional view of the chuck section, and FIGS. 5 and 6 are A side view and a plan view of the getter device applicable to the present invention, and FIG. 7 is a perspective view of the getter spring. (1) is a tube body, (2) is an anode button, (3) is a branch plate, (5) is a getter spring, (22) is a one-joint robot, (23) is the first link, (24) (25) is the second link, and (25) is the chuck portion. Agent Sadado Ito Hidemori Matsukuma

Claims (1)

[Claims] In a method for installing a getter device in which a getter spring is inserted through a neck tube and fitted to a support plate fixed to an anode button, a second ring having a chuck portion is rotatable on a first link. Using a one-joint robot that is connected to each other and uses an air cylinder to open, close, and slide the chuck part, grip the getter spring with the chuck part, insert the one-joint robot through the neck tube, and insert the second robot into the neck tube. A method for mounting a getter device in a cathode ray tube, comprising bending the link toward the support plate and then sliding the chuck portion toward the support plate to fit the getter spring to the support plate.