JPS58184239A - Rotation measuring device - Google Patents

Abstract

PURPOSE:To make it needless to change each time a position as well as setting up of a light source and a light receiving camera even if the size of a glass bulb and a deflection angle as well as the position of a pass hole of an electron gun according to a sort are changed. CONSTITUTION:A luminous beam 12 irradiated from a light source (laser light source) 11 is made to curve at a right angle to hit the second reflector 221, one of the plurality of the second reflectors 221,2,3..., which are attached to a rotary plate 21 in the way of different radiuses and depth from the rotary shaft 23, while being curved again at a right angle. The luminous beam 12 curved in the horizontal direction passes the pass holes 101 and 102 of the electron gun inserted into a mount pin 9 while the hitting third reflector 22'1 on the light receiving side and having the same structure with that on said luminous side and curve at a right angle, further to be curved horizontally at a right angle by the fourth reflector 20' and received by a light receiving camera 13 thus to measure rotation while displaying images on a screen of a monitor 14 as before.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to rotary measurement of stems, gun mounts, electron guns and glass bulbs during the production of color cathode ray tubes.

Conventionally, this type of measuring device looked through an optical telescope and measured the misalignment between one transmission hole and the other transmission hole of an electron gun set on a jig by reading a scale carved into the jig.

In addition, in the sealing process of combining the glass bulb and the electron gun, as shown in Figure jlE1, the sealing head body 1 has a
A position bottle 3 is locked to a plurality of blocks 2, a rotary position of a glass bulb 4 is determined, and a distance to a burner 6 is further set using a saddle 5 to determine the sealing dimension of the glass bulb 4.

On the other hand, the rod 7t that supports the sealing head 1 - the mount bolt that rotates and moves up and down in synchronization with the rotating block 8 to which it is fastened.
The electron gun 10 is inserted into the electron gun 10, and the emission beam 12 emitted from the light emission flit passes through the hole 7' of the rod 7 and through the passage hole of the electron gun 10. - Emission beam 12 with light receiving camera I) 13
The Uke was measuring the error of the low-ten seal by drawing a bow on the screen of the monitor 14.

After that, the electron gun 10 is raised by the machine/tobin 9, inserted into the glass bulb 4, stopped at a predetermined dimension, and sealed with the burner 6, thereby ensuring rotation of the glass bulb 4 and the electron gun 10. @However, with the above method, if the size and deflection angle of the glass bulb were changed,
If the position of the electron gun passage hole changes depending on the product type, the position must be changed each time, and the settings of the light emitting source and light receiving camera must be changed.

Furthermore, automatic sealing machines have multiple sealing heads (usually 8 or 16 heads), and many types of products are often processed using the same machine, making this method practically impossible. there were.

In order to solve these drawbacks, the present invention rotates the emitted light beam irradiated from the light emitting source according to the height dimension using a plurality of reflecting plates, changes the irradiation direction, and rotates the light receiving side in synchronization with this. This is a rotary accuracy/measuring device with the following characteristics.

Hereinafter, the present invention will be explained with reference to the drawings. FIG. 2 is a perspective view of an embodiment. A light emitting beam 12 irradiated from a light emitting source (laser light #) 11 is bent at a right angle by a first reflecting mirror 20, and a rotating plate 21KI and several second reflecting mirrors 21.22 x,
2. alloo, 74E rotation axis 23 color (D second reflector 221 installed in different radius and depth ways)
It is bent again at right angles.

The emitting beam 12 bent in the horizontal direction is attached to the mounting bin 9
The electron gun 100 inserted in the electron gun 100 passes through the passage holes 101 and 102, is bent at a right angle to the second reflecting mirror 221l having the same structure as the light receiving side and the emitting side, and is further bent at a right angle to the fourth reflecting mirror 221l.
At 0', the light is bent at right angles in the horizontal direction and received by the light receiving camera 13, and the rotation angle is measured by drawing the light on the screen of the monitor 14 as before.

Figure 3 shows the installation of multiple reflective ATs, with one rotating plate 21.
is fitted onto the rotating shaft 23 via a bearing 24, and the other end is connected to the main body 2.
It is connected to a rotary power source 26 which is fastened to the rotary power source 26, and rotates one pitch at a time depending on the eccentricity.

This structure is exactly the same on the light emitting side and the light receiving side, and the only difference is whether the light receiving source is attached to the arm 27 attached to the lower end of the main body 25 or the light receiving camera is attached.

A plurality of reflecting mirrors 221, 2. The N principle for installing B...n is a combination of (a) and (b) in Figure 4. Figure (a) shows the reflector 22t - vertically moving it up and down to the height of the emitted beam 12. (Figure b1 moves the reflection @22 in the horizontal direction to adjust the height of the emitted beam 12. Now, if the rotary plate 21 is used as the reference for the rotation axis 23, the reflector 221 is moved closer to the emitted beam 12 side. Types of Kakufut with different installation and height of electron gun 100 passage hole 101.2,
The one-pitch rotating plate 21 rotates, and the reflection -222 rotates.

The mounting position of the reflecting mirror 222 is determined, for example, at a radius farther from the rotating shaft 23 and at the rotational power source 26 (lIl) so that the emitted beam 12 always comes to the center of the reflecting mirror.

Hereinafter, even if the height of the passage hole of the electron gun is different, the dimensions can be determined repeatedly as described above.

As explained above, even if the size and deflection angle of the glass pulp are different and the height of the electron gun passage hole is changed, rotary measurement using an electron gun alone can be performed using an automatic sealing machine with multiple heads. Even when producing a mixture of multiple models, changes can be made freely with a single signal, so there is no need to stop the equipment and change settings, resulting in a huge reduction in man-hours.

Furthermore, since the light-emitting side and the light-receiving side have the same structure and rotate one pitch at a time, the stopping precision is high, the position of the mirror does not shift, and there is little error in low-take measurements drawn on the monitor.

Furthermore, depending on the type of the mixing machine, six reflecting mirrors are used in the example of the present invention, but there are advantages in that they can be freely selected, the rotary plate can be easily attached and removed, and it can be stored permanently.

Note that the light emitting source and light receiving camera may be installed vertically if there is sufficient space; in this case, the second. The fourth reflecting mirror can be omitted.

[Brief explanation of the drawing]

Figure 1 is a diagram of low-temperature measurement using a conventional sealing machine, Figure 2 is a perspective view of the present invention, and Figure 3 is a reflection plate installation diagram of the present invention.Figure 4 (a), (b) is a diagram explaining the principle of the present invention◎ 1...Sealing head body% 4...Glass pulp, 10...Electron gun, 11...Light emitting source, 12... Luminous beam, 13...
Light receiving camera% 201. z, sll, n...
wE2 reflection f! ! % 21...Rotating plate.

Claims (1)

[Claims] In rotary measurement of color cathode ray tube glass pulp and electron guns, a rotating plate with multiple reflecting mirrors is rotated to match the height of the transmission hole of the emission beam of each different type of electron gun. A rotary scale IIIJ device characterized in that the position of the reflecting mirror is changed by changing the position of the reflecting mirror.