JPS603834A - Sealing device of cathode-ray tube - Google Patents

Abstract

PURPOSE:To make the central axis of a bulb to coincide with the central axis of an electron gun with high accuracy by detecting slipping-off of the central axis of the bulb neck part through magnification while making each pair of two contact levers in the X-Y axial directions to be displaced into the opposite directions respectively. CONSTITUTION:When the central axis Z of the bulb neck part 4 has the slipping- off of DELTAx in the first direction between the central axis Z0 of an electron gun 3 and itself, a pair of the contact levers 73 and 74 of the first detection mechanism 15 move into the opposite directions each other. Thereby, the cross lever 79 performs reversible circular motion to move a detection rod 82 of a dial gauge 81 for separating a pointer of the dial gauge 81 from the starting point. As to the second direction Y also, the second detection mechanism 16 operates in the same way. Accordingly, by moving a bulb holder adjustingly until the pointers of the respective dial gauges 81 and 96 meet the starting point, each central axis can be accorded with high accuracy.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a sealing device for a cathode ray tube, and more particularly, to a device capable of aligning the central axis of a bulb and the central axis of an electron gun with high precision. .

[Technical background of the invention]

Conventional cathode ray tube sealing devices, such as horizontal sealing devices,
A suction cup that suctions the front surface of the valve and a collet chuck that holds the electron gun are placed facing each other on the lathe type body, and a burner is provided between them.By moving the collet chuck toward the suction cup, The electron gun is inserted into the neck of the valve, and the joint between the valve and the electron gun is fused by heating the joint between the valve and the electron gun with a burner while rotating the suction cup and collet chuck synchronously. , [Problems with the background art] 8o U1, Yo2. ,, oh, □-. **、 、、、、
``There was a problem with the positioning of the valve 1, and the positioning of the valve relied on the operator's visual sense.As a result, the center axis of the neck of the valve and the center axis of the electron gun were misaligned.
Correcting this deviation is limited because it relies on the operator's intuition, and as a result, quality and yield deteriorate, making it impossible to manufacture cathode ray tubes with higher precision specifications.

[Purpose of the invention]

The present invention addresses the above-mentioned problems and provides a sealing device for a cathode ray tube that can align the central axis of a bulb with the central axis of an electron gun with high precision.

[Summary of the invention]

The cathode ray tube sealing device of the present invention includes an electron gun holder that holds an electron gun and orients its center axis (<20 axis) in a predetermined direction, and a valve that is provided opposite to the electron gun holder to hold the electron gun. The center axis (2 axes) of the bulb is oriented in a predetermined direction, and the direction of the spear 1 (X-axis direction) perpendicular to the central axis (2 axes) of the bulb being held, and the direction of the center axis (2 axes) of the bulb and the spear 1. The second direction (Y-axis direction) perpendicular to both directions (X-axis direction)
a valve holder whose movement can be adjusted; a central axis of the electron gun held by the electron gun holder <20 axes); and a central axis (2 axes) of the valve held by the valve holder. The detection mechanism of spear 1 detects the deviation in the direction (X-axis direction), the central axis (ZO axis) of the electron gun held by the electron gun holder, and the central axis (ZO axis) of the valve held by the valve holder. 2 axes)
a detection mechanism for the spear 2 that detects a deviation in the direction (Y-axis direction) of the spear 2; and an insertion mechanism that brings the electron gun holder and the valve holder closer together and inserts the electron gun into the neck of the valve. , a heating means for fixing and integrating the electron gun and the valve, and the detection mechanism of the spear 1 is thrown parallel to the direction of the spear 2 (Y-axis direction), (X-axis direction), and the valves are supported by being pivotally connected to two links. The detection mechanism of the spear 2 is provided parallel to the direction 1, 1-1 (X-axis direction), and the detection mechanism of the spear 2 is installed in the neck of the valve in the direction of the spear 2 ( (Y-axis direction) and are supported by two links that are pivoted and supported, and due to the deviation in the direction of spear 2 (Y-axis direction) of the valve, they touch each other in the direction of spear 1 (X-axis direction). It is characterized by being composed of a pair of contact levers that move in opposite directions. The deviations are detected as displacements of the six pairs of contact levers of the 1'F1 detection mechanism and the fang 2 detection mechanism in the 2nd direction (Y-axis direction) and the 1st direction (X@ direction), respectively, and further, By displacing six pairs of two contact levers in opposite directions, the deviation of the central axes (two axes) is magnified and detected, and thereby the valve holder is moved and adjusted, and each central axis ( 2 axes and 20 axes) with high precision.

[Embodiments of the invention]

Unexploded """""""Tube 0 Sealed" 9mK Co., Ltd. Detailed explanation based on 1 example @ Figure 1 shows a cathode ray tube (1) for an oscilloscope, and Figure 2 shows its bulb (2) Figure y!3 shows the electron gun (3).

,? Figure 4 shows that when manufacturing the above cathode ray tube, the electron gun (3) is inserted horizontally into the neck (4) of the bulb (2), and the bulb (2) and electron gun (3) are placed in their opposing positions. This sealing device U is a horizontal sealing device (1v shown) that is fixed and integrated in an airtight manner at the contact portion (5).

Collet chuck (131) as a lathe-type body α2KK subgun holder (131, suction plate α as a valve holder, Sai1
In addition, it is formed by providing a detection mechanism α9αθ of 1-2, an insertion machine muη, a burner cod serving as a heating means, etc.

The above body (121 has a synchronous rotating shaft (211
is installed horizontally, and this synchronous rotation axis Qυ is connected to the body (13
It is rotated by a drive mechanism consisting of a motor etc. installed at the bottom of the holder.

The collet chuck a3 is supported by the insertion mechanism αn, and is configured to move parallel to the synchronous rotation shaft above the two swords.

That is, the above-mentioned insertion mechanism Q7) rotates the handle (c) so that its movable block 2 is aligned with the synchronous rotation axis C21).
It is designed to move parallel to the [The above collet chuck a3, as shown in Fig. 5 and Fig. 6,
Insert the electron gun (3) into the claw member holder and remove the screw tube (
By rotating K, the wedge member is moved to reduce the diameter of the claw member, thereby holding the electron gun (3) in place. Mounting tube C1
aK rotatably fitted together, and by attaching this mounting tube 04 to the upper part of the moving block bracket and the driven shaft CIK supported in parallel with the blade of the synchronous rotating shaft, the insertion mechanism Q? )
The central axis (Z
The central axes of the Q axis) and driven axis (C) are aligned.

In addition, a transmission mechanism consisting of a sprocket (to), etc. is provided between the driven shaft □□□ and the synchronous rotating shaft (21J), and the mounting tube 6z and the pawl member 12
A rotational position adjustment mechanism including a worm On and a worm wheel (to) is provided between the worm and the worm 91.

In addition, a laser projector (4υ) is provided below the collet chuck (131), and a light receiver (42) is provided above it.
A monitor television 143 for measuring the rotational position in 3) is connected. Note that the electron gun (3) is formed with a square hole 16 through which the laser beam passes.

Pull the suction plate a, move block of the insertion mechanism a (
C) is supported by a fixed block facing opposite to the collet chuck←3, and
It is perpendicular to the central axis (two axes) of the held bulb (2). 1
−1 direction (X-axis direction), that is, the long side direction of the face surface of the valve (12), and the central axis (2nd axis) of the valve (2) and the first
It is formed to be movable and adjustable in the direction of the spear 2 (Y-axis direction) perpendicular to both directions (X-axis direction), that is, in the short side direction of the face surface of the valve (2).

That is, as shown in Figures 7 and 28, the suction plate I suctions and holds the face of the valve (2). In contact with the long side and short side of the valve (2), 1?1
The table 6G of 171 is attached to the first table (50) together with five 7-line stoppers α9 that are positioned in the direction of the spear 2 (X-axis direction) and the direction of the spear 2 (Y-axis direction). It is supported by a table 69 so as to be movable in the X-axis direction (X-axis direction).

The table 61) of the spear 2 is supported by the board mark so as to be movable in the direction of the fang 2 (Y-axis direction), and the adjustment screw of the fang 1 is provided between the table (50) of the sword 1 and the table tbn of the sword 2. A mechanism mallet and a fixing screw mechanism 5 of 3-1 are provided, and between the table 61) of the tooth 2 and the board 17
2 adjustment screw mechanism marks and a spear 2 fixing screw mechanism □□□) are provided. Then, the board 6z is attached to the fixed block (4) via a plurality of mounting members 1571f511D■.
Above moving block c! on top of 1El! 0 driven axis (g)
It is attached to a driven shaft that is coaxially supported.

Further, a transmission mechanism consisting of a sprocket and the like is provided between the driven shaft and the synchronous rotating shaft (all), so that the suction plate I and the collet chuck (13) rotate synchronously on the same axis. There is.

In addition, an engaging body having a positioning hole is attached to the outer edge of the board 63, and the body (
A positioning pin (to) that engages with the positioning hole IQ is provided on 121 so as to be movable up and down via a guide body, and by inserting this positioning pin into the positioning hole i6), the suction plate a It is fixed at a predetermined rotational position, that is, a position where the long side direction of the held bulb (2), that is, the direction of the spear 1 (X-axis direction) is directed in the vertical direction.

The detection mechanism α9 of the spear 1 is held between the central axis (z0 axis) of the electron gun (3) held by the collet chuck 0, that is, the rotation center axis of the collet chuck (13) and the suction plate I, and the suction plate α. This is to detect the deviation (ΔX) in the direction of the spear 1 (X-axis direction) with respect to the central axis (z-axis) of the valve (21). The direction of the spear 2 between the central axis (2θ axis) of the electron gun (3), that is, the central axis of rotation of the collet chuck and suction plate I, and the central axis (2 axes) of the valve (2) held by the suction plate. (Y-axis direction) deviation (Δy) is detected.

As shown in Figures 9 and 10, the detection mechanism (I9) of the sensor 1 is connected to a pair of contact levers (73) on the board C71.
) □□□, facing each other and parallel to each other, are connected via two links (7!
A pair of contact levers (on the inner side of the tip of the r3σ
A sliding contact member (77) with a guide slope (70) is installed at the tip, and a roller (77) is installed at the base end, and a cross lever (marked 7 is attached to a rotatable K bracket 1) between each row 568.
A pair of contact levers σ3σ are provided so as to be movable in the length direction, and a coil spring ■ is stretched between one side of the cross lever σ and the substrate σ4.
The other two opposing sides of are brought into contact with each of the above-mentioned rollers σ~, the remaining one side of the cross lever 4 is brought into contact with the detection rod 6 of the dial gauge @υ provided on the board (7), and ,
Opposing the tips of the pair of contact levers ff31 (:14) [a stopper is provided on the 6 substrates, and each contact lever σ31σ4 is moved toward the tips by the biasing force of the spring ■ and brought to the closest position. In other words, each contact lever σ3
(741 and each link σ4 are locked in a right angle state.This detection mechanism ([90
The base plate (7a) is attached to the support plate provided on the body (1Z) in the direction of the spear 2 (Y-axis direction) with each contact lever (73) (74) facing in the direction of the arrow 2 (Y-axis direction). Y-axis direction)K
It is movably provided, and as it moves, it advances and retreats from the neck part (4) of the valve (2) held by the suction plate I, and when moving forward, the neck part (4) is moved by each contact lever (73) σ4.
It is designed to be sandwiched in the direction of (X-axis direction).

Further, the detection mechanism (161) of the spear 2 is similar to the detection mechanism (15) of the spear 1, and includes a substrate η, a pair of contact levers (
■(8'l, 11 links ■, 2 sliding contact members (921, 2 hanging rollers (93) with guide slope (9I)
, a cross lever (94), a coil spring (951, a dial gauge (to), a detection rod υη, two stoppers (not shown), etc. Lever (8111
With the 1M facing the 1st direction (X-axis direction), the above,
Detection of i-1 @Structure a9 board (adjacent to the parrot, it is provided on the support plate (goods) so as to be movable in the direction of spear 1 (X-axis direction), and by movement, it is attached to the suction plate (14) It moves forward and backward into the neck part (4) of the held valve (2), and when moving forward, the neck part 14) is pinched from the direction of the spear 2 (Y@ direction) by each contact lever (A).

In addition, the detection mechanism of the spear 1 (L901 pair of contact levers)
The layers σ and the pair of contact levers of the detection mechanism tte mentioned above are connected to the rotation center axis of the collet chuck a3 and the suction plate I, that is, the center axis of the electron gun (31) held on the collet chuck 3, respectively. If the (2θ axis) and the central axis (2 axes) of the neck portion of the valve (2) held on the suction plate a (a) coincide, a symmetrical state will occur as shown in Fig. 9. Therefore, there is no positional deviation between the six pairs of rollers agt (and the sides of each cross lever (79) (foundation) are also aligned in the first direction (X-axis direction) and the second direction (Y-axis direction). The pointer of each dial gauge Q31) (a) also points to the origin.

The burner plate is supported on a moving block (101) having a similar moving mechanism diagram as the insertion mechanism αη, and is moved between the nillet chuck housing 3 and the suction plate α.
By rotating the handle (102) of mechanism 4, it is moved parallel to the synchronous rotation axis ■υ.

Next, the operation will be explained.

First, the electron gun (3) is held by the collet chuck (13), and the face surface of the valve (2) is held by the suction plate.
14).

In this case, the central axis (zO axis) of the electron gun (3) coincides with the rotation center axis of the collet chuck (L31) and the suction plate (1), but the central axis (2 axes) of the valve (2) 2
) to position the valve (2) by simply contacting the two sides of the valve (2) with the five 7-line stop collars (491).
) The rotation center axis p of the suction plate I does not necessarily coincide with the center axis (ZO axis) of the electron gun (3) due to variations in the outer diameter of the suction plate I.

Next, a laser beam is emitted from the laser projector toward the receiver (421), and in this state, the collet chuck (13
is rotated by operating the worm on of the rotational position adjustment mechanism, and the laser beam is emitted from the electron gun (while watching the TV monitor (43)).
3) and pass through the square hole (6) of the electron gun (3).
Then, in this positioning, by using the diffraction phenomenon of laser light, the direct image of the rectangular hole (6) shape displayed on the monitor TV F431K and the diffraction image formed around it are determined. Extremely accurate positioning can be achieved by operating the worm c37) while observing the size, shape, clarity, etc. In addition, the rotational position of valve 1 (2) can be determined by using the five alignment stoppers 0
This is done by abutting the valve (2) against the valve and fitting the positioning pin trowel and the positioning hole (6).

Also, around this time, the detection mechanism as for spear 1 and spear 2
(1610゛ substrate (72 force is advanced, 6 pairs of contact levers (731σ 滲(he) (8 springs, each sliding contact member η04
Clamp the neck part (4) of the valve (2) through the .

At this time, the central axis (2
As shown in Figure 10, the collet chuck A3
There is a deviation (Δ
Z), the pair of contact levers (J3 ff41) of the detection mechanism 0901 of the spear 1 move in opposite directions.As a result, the cross lever (7 bells) rotates, and the detection rod of the dial gauge @υ 184 moved above.

The pointer of the dial gauge (81) moves away from the origin. Similarly, the direction of the spear 2 (
If there is a deviation C1y) in the Y-axis direction, the pair of contact levers (c) (c) of the spear 2 detection mechanism (161) move in opposite directions.
9 The tongue rotates, the detection rod P(an) of the dial gauge moves to the right, and the pointer of the dial gauge (A) moves away from the origin.

If the pointer of each dial gauge 1) (961) is far from the origin, operate the adjustment screw mechanism 6365 of spear 1 and 2 to bring the pointer of each dial gauge 0 (a) to the origin. Move the oni table 50 in the direction of spear 1 (X-axis direction) and move the table 6υ of spear 2 in the direction of 1-2 (Y-axis direction) until they are aligned. The center @ (Z-axis) of the neck portion 14) in 2) is aligned with the center axis (ZO-axis) of the electron gun (3). After that, operate the fixing screw mechanism (54 trowels) of Sai 1 and Spear 2,
On the spear 1 table (50 on the spear 2 table 61), the Sai 2
The table 151) of the table 151) is fixed to the substrate (52),
Thereafter, the substrate Cl21 of each detection mechanism α9αG is moved back.

In addition, 6 pairs of contact levers σ3)f of each detection mechanism α9αG
f4) (c) The amount of movement of □□□ is not necessarily equal, but
Each cross lever a (G) (Foundation) has each coil spring (8
Contact lever cts by 0 (to 741)
Since each cross lever (79) ((b) is biased to move in the direction of ) Even if there is a variation in the outer diameter, this can be accommodated.

Next, operate the handle (102) of the moving mechanism αOI to move the burner α mallet to the opposing contact part (5) of the neck part 14) of the valve (2), and operate the handle e1 of the insertion mechanism αη. The collet chuck α3 is moved toward the suction plate I, and the electron gun (3) is inserted into the neck portion (4) of the valve (2) to bring these opposing contact portions (5) into contact.

Next, after pulling out the positioning bin side from the positioning hole Q3 (9), the drive mechanism consisting of a motor etc. is driven to rotate the synchronous rotating shaft C11, and thereby the transmission mechanism consisting of a sprocket etc. At the same time, the driven shaft Q is rotated by a transmission mechanism consisting of one sprocket, etc., and the valve (2) and the electron gun (3) are rotated synchronously on the same axis. valve(
2) and the electron gun (3) are heated to fix and integrate the bulb (21) and the electron gun (3) in an airtight manner at the opposing contact portions (5).

〔Effect of the invention〕

As described above, according to the present invention, the direction 1 (X-axis direction) and the direction 2 (Y-axis direction) can be detected as the displacement of a pair of contact levers of the detection mechanism of spear 1 and a pair of contact levers of the detection mechanism of spear 2, respectively. Furthermore, since the six pairs of contact levers are respectively displaced in opposite directions, the deviation of each of the central axes (ZO axis) (z axis) can be magnified and detected. Therefore, by adjusting the movement of the valve holder, each center axis (zQ axis) (Z axis)
can be matched with high precision, improving the quality of cathode ray tubes, improving yields, and efficiently manufacturing cathode ray tubes with higher precision specifications.

[Brief explanation of drawings]

The figure shows an embodiment of the cathode ray tube sealing device of the present invention,
Figure 1 is a side view of the cathode ray tube for an oscilloscope, Figure 2 is its front view, Figure 5 is a side view of the electron gun, and Figure I4 is a side view of the sealing device. Figure 6 is a side view and front view with a part of the fret chuck part as the electron gun holder in cross section, Figures 7 and 18 are side and rear views of the suction plate part as the valve holder,
Figure 9 of the spear is a rear view of the detection mechanism portion of the spear 1 and spear 2, and Figure 10 is an explanatory diagram of the detection mechanism of the spear 1. ill...CRT, (2)...Bulb, (3)...
Electron gun, 14)...neck part, ttn...sealing device,
C131・Collet chuck as a handgun holder,
Q4) -- Suction plate for valve holder, a9...spear 1
Detection mechanism for the shank, detection mechanism for the spear 2, shank...insertion mechanism,
a8... Burner as heating means, σ3σ4... Contact lever, (i'9... Link, (c) (89-... Contact lever, 0... Link.

Claims (1)

[Claims] (1) An electron gun holder that holds the electron gun and orients its central axis (ZO axis) in a predetermined direction; ) is directed in a predetermined direction, and the center axis (2 axes) of the held valve is orthogonal to the center axis (X).
axial direction) and the central axis of the valve (2 axes) and the first direction (X
51-2 direction (Y-axis direction) perpendicular to both the axial direction)
a valve holder that can be moved and adjusted; a central axis (ZQ axis) of the electron gun held in the electron gun holder;
The ability to detect the deviation in the direction of the spear 1 (X-axis direction) from the axis)
a detection mechanism, a central axis (ZO axis) of the electron gun held by the electron gun holder, and a central axis (ZO axis) of the valve held by the valve holder.
Fang 2 detects the deviation in the direction (Y-axis direction) from the axis
a detection mechanism; an insertion mechanism for bringing the electron gun holder and the valve holder close together to insert the electron gun into the neck of the valve; and a heating means for fixing and integrating the electron gun and the valve. The above-mentioned detection mechanism 1-1 is provided parallel to the direction 1 and 1-2 (Y-axis direction) and abuts on the neck part of the above-mentioned valve from the direction t'i (X-axis direction), respectively. A pair of contact levers, both of which are pivotally connected and supported by two links, are moved in opposite directions in the direction of the spear 2 (in the Y-axis direction) due to a deviation of the valve in the direction of 1'l (in the direction of the X-axis). The detection mechanism for the spear 2 is installed parallel to the direction of 1, 1F1 (X-axis direction), and the detection mechanism for the spear 2 is installed in the neck of the valve in the direction of the spear 2 (Y-axis direction).
The valves are in contact with each other in a sandwiching manner from the axial direction) and are supported by being pivotally connected to at least two links, and are opposite to each other in the direction of the spear 1 (X-axis direction) due to the deviation in the direction of the spear 2 (Y-axis direction) of the valve. A cathode ray tube sealing device comprising a pair of movable contact levers.