KR200147992Y1 - Device of inserting spacer in the beading jig of the crt - Google Patents

Abstract

The present invention discloses a novel apparatus for injecting a spacer for maintaining a gap between electrodes when assembling an electron gun.

In the related art, separate spacers are alternately inserted with an electrode and then separated one by one, thereby requiring a lot of assembly labor.

In the present invention, a plurality of spacers are supported and guided on the support block so that each spacer may be sequentially inserted in the horizontal direction and separated at once.

Description

Spacer input device of electron gun bead jig

1 is a side view showing a general configuration of an electron gun.

2 is an exploded side view showing the configuration of a conventional bidding jig.

3 is a perspective view showing a conventional electrode and spacer assembly process.

Figure 4 is an exploded side view showing the configuration of the bidding jig of the applicant of the same applicant.

Figure 5 is a plan sectional view showing the configuration of the spacer device of the present invention.

6 (a) to (c) are sequential side views showing the operation of the spacer input device of the present invention.

* Explanation of symbols for main parts of the drawings

G: electrode 2: lower jig

23: guide rod 24: assembly rod

25: spacer support 251: spacer

252: spacer tip 253: support block

254: guide groove 255: elongated hole

256: lever

The present invention relates to the manufacture of an electron gun of a CRT, and more particularly, to an apparatus for putting a spacer into a beading jig for temporarily holding an electrode.

An electron gun which emits an electron beam for emitting a fluorescent surface is provided with a plurality of electrodes (G; G1, G2,...) That focus and accelerate thermal electrons emitted from a cathode (K) as shown in FIG. 1. ) Are arranged at predetermined intervals, respectively.

In order to support the plurality of electrodes G at predetermined intervals, bead glass B is used, which is pressed by the outside of the electrodes G in a softened state by heating and thus enters the plurality of electrodes G. G) are combined into one electron gun assembly.

At the top of the combined electron gun assembly, a convergence cup (C) is bonded to the final electrode to prevent penetration of the deflection magnetic field, and a stem having a stem pin (P) and an exhaust pipe (X) at the bottom thereof. ; T) is combined.

Here, the stem pin P is bonded to each of the electrodes G and the bead glass B directly with the lugs L embedded with the electrode G or through a ribbon R. At the same time it is electrically connected to support the electron gun.

As described above, a process of assembling the electron gun integrally by combining the bead glass B is referred to as a beading process. In this beading process, the electrodes G are aligned at a predetermined interval and temporarily suspended. The device for fixing is a biding jig.

2 shows the configuration of the bidding jig most commonly used for the assembly of an in-line type color gun. The bidding jig is divided into an upper jig 3 and a lower jig 4, and the lower jig 4 has two supporting rods 42 for coupling with the upper jig 3, and an electrode G therebetween. Three assembly rods G are provided in which the spacers S are inserted alternately with the spacers S.

On the other hand, the upper jig 3 is provided with a substrate 31 into which the upper part of the supporting rod 42 of the lower jig 4 is inserted into the coupling holes 31a on both sides. A protrusion 421 protrudes from the upper side of the support bar 42 to insert and rotate the fixing cap 32 having the slot 32a to move the substrate 31 of the upper jig 3 to the lower jig 4. It is locked to the assembly rod (42).

On the other hand, the two extension rods 36 into which the pressure springs 36a are inserted are extended upwards, so that both ends of the pressure block 33 are coupled to the two extension rods 36, and the extension rods 36 are formed. A pressing cam 37 with a handle 37a is hinged between the two ends of the end.

On the other hand, the lug support part 34 is installed below the substrate 31, and the three cathode support bars 35a constituting the cathode support part 35 extend upwards, and the spring 35c and the operation handle 35b) is installed.

The conventional bidding jig alternately inserts the electrodes G; G1, G2, ... into the spacer S of the lower electrode 4 from the final electrode.

Meanwhile, the lug L is coupled to the lug support part 34 of the upper jig 1 and the cathode K is inserted into the cathode support part 35, and then the upper jig 3 is placed on the lower jig 4. Put on.

Then, the tip of the supporting rod 42 of the lower jig 4 protrudes upward through the coupling hole 31a of the substrate 31 of the upper jig 3. At this time, the projection 421 is covered with the fixing cap 32. The upper and lower jigs 3 and 4 are integrally engaged by the slots 32a of the fixing cap 32.

Then, by operating the operation handle 35b of the cathode support rod 35a up and down to adjust the relative position between the cathode K and the electrode G, pressurizing by rotating the pressure cam 37 by turning the handle 37a. The block 33 descends and the three cathode support rods 35a are elastically pressed to complete the assembly of the bidding jig.

In addition, in the conventional bidding jig, since the electrode G and the spacer S are alternately inserted into the assembly rod 44 in the lower jig 4, the insertion of the bidding jig is cumbersome and after completion of the bidding, Difficult to separate

In addition, since the cathode support part 35 does not completely fix the cathode K in the upper jig 3, the cathode K is detached well when the upper jig 3 is placed on the lower jig 4, so that a great care is taken. And, the coupling of the upper and lower jig (3, 4) is also very troublesome because it is configured to rotate after the fixing cap 32 to match the projection 421 position.

In addition, the maintenance of the assembled state of the electrodes (G) is also a hassle to rotate the pressure cam 37.

In addition, the upper jig (3) has a large number of protrusions above and below the substrate (31) can not stand or fixed independently can not proceed even manual assembly without a separate jig.

In short, although the conventional bidding jig has a very complicated configuration, the assembling work of the electrode and the like is very cumbersome, and in particular, the automation of the electron gun assembly is impossible at all.

Accordingly, the applicant has developed a bidding jig of an electron gun as shown in FIG. 4 and filed the same as the present application (patent tool number later).

The beading jig includes a locking rod 22 and a guide rod 23 extending from the substrate 21 of the lower jig 2 where the assembly rod 24 into which the electrode G is to be inserted is installed. Is coupled to the sleeve 12 provided on both sides of the substrate 11 of the upper jig 1 by the weight of the upper jig 1 and locked by the locking unit 16. On the other hand, the pressure plate 13 having the lug support part 14 and the cathode support part 15 at the lower side thereof is guided to the sleeve 12 at both ends to be elastically supported by the substrate 11 of the upper jig 1, and the lower jig The spacer support part 25 is provided in the guide rod 23 of (2) (refer the correspondence application for the remainder details).

It is an object of the present invention to solve the above-mentioned problems of spacer insertion and separation of the conventional bidding jig and to provide a spacer dosing device suitable for use with this biding jig filed on the same day.

Spacer input device according to the present invention for achieving the above object is a device for inserting a spacer for maintaining a gap between a plurality of electrodes constituting the electron gun, the support block which is located on one side of the assembly rod is inserted a plurality of electrodes sequentially A plurality of spacers are supported and guided in the guide groove of the input and separated in the horizontal direction with respect to the electrode.

According to such a configuration, the spacers are simply assembled by pushing the spacers one by one when assembling the electrodes one by one, and after the electron gun assembly, all the spacers can be separated at once, thereby reducing the labor of assembling the electron gun and automating the electron gun assembly process. Can also be achieved.

Such specific features and advantages of the present invention will become more apparent from the following description of the preferred embodiments with reference to the accompanying drawings.

5 and 6, the locking rod 22 and the guide rod 23 extend from both sides of the substrate 21 of the lower jig 2. It is composed of a spacer support 25 on a guide rod 23 located on one side of the assembly rod 24 as part of the lower jig 2.

Support blocks 253 having different thicknesses having guide grooves 254 formed on the outer circumference of the guide rod 23 are stacked to support the plurality of spacers 251 at a predetermined interval.

An elongated hole 255 is formed in the body of each spacer 251 to be guided by the outer circumference of the guide rod 23. The guide groove 254 and the guide rod 23 of the support block 253 are formed inside and outside. By being guided to the relative movement relative to the electrode (G) on the assembly rod 24 in the horizontal direction.

Meanwhile, a spacer tip 252 having an appropriate thickness is attached to the front of the body of the spacer 251 to be inserted between the electrodes G to maintain the required interval. Preferably, the spacer tip 252 is branched into two forks so as not to interfere with the surface of the electrode G and has a U-shaped configuration.

In addition, at the rear end of the body of the spacer 251, two levers 256 are extended to both sides for separation of the spacer 251.

The operation of the spacer device of the present invention as described above will be described with reference to FIG.

In FIG. 6A, when one electrode G is inserted into the assembly rod 24 of the lower jig 2, the rear end of the spacer 251 is pushed so that the spacer tip 252 is placed on the electrode G. The required interval with the next electrode (G) is maintained by adding so that it is added.

At this time, when the assembly of the electrode (G) is made by the operator manually, the worker proceeds by inserting the electrode (G) in the assembly rod 24 and then pushing the spacer 251.

On the other hand, in the case of automatically assembling the electrode G, a suitable manipulator transfers each electrode G and inserts it on the assembly rod 24 while the lower jig 2 is fixed at one position. The jig 2 itself is made in such a manner as to insert components such as the electrode G while moving between the plurality of electrode G insertion processes.

In this configuration, a simple air cylinder is preferable as the configuration in which the spacer 251 is pushed in. In the state in which the lower jig 2 is fixed, there is no space for installing a plurality of air cylinders up and down. (2) is moved between the process to insert the electrode (G) is configured to push the spacer 251 of the air cylinder of different levels installed in the process.

As such, when all the electrodes G and the spacers 251 are inserted and inserted, the upper jig 1 is coupled to the lower jig 2 as shown in FIG. 6 (b), and the outer sides of the assembled electrodes G are assembled. In the heat-softened bead glass (B) is pressed in to combine the electrodes (G) with one electron gun.

After the bead glass B is cooled, the spacer 251 is separated as shown in FIG. 6 (c). Each spacer 251 is extended to the rear end thereof so that the two levers 256 extend. When the tool is stretched by tension, the entire spacer 251 is separated at one time.

Then, the upper jig 1 is removed and the electron gun is taken out, and then the lower jig 2 provided with the inventive spacer inserting device is again put into the next electron gun manufacturing.

As described above, according to the present invention, instead of inserting the independent spacers alternately with the electrodes and separating them one by one, the spacers supported and guided by the spacer support unit can be sequentially pushed in and separated at once.

As a result, the electron gun manufacturing labor is significantly reduced, and automation can be implemented.

Claims (5)

A device for inserting a spacer for maintaining a gap between a plurality of electrodes constituting the electron gun, the guide groove of the support block 253 is located on one side of the assembly rod 24 is inserted into the plurality of electrodes (G) ( And a plurality of spacers (251) are supported and guided to (254) to be inserted and separated in the horizontal direction with respect to the electrode (G). The electron gun as set forth in claim 1, wherein the support block 253 is installed on an outer circumference of the guide rod 23 extending from the lower jig 2 on which the assembly rod 24 is installed to the upper jig 1. Spacer input device of bead jig. The apparatus of claim 1, wherein the spacer (251) has a spacer tip (252) to be inserted into the electrode (G) at the tip of the body. The apparatus of claim 1, wherein a lever (256) extending to the rear of the body of the spacer (251) is provided. Electron gun beading according to any one of claims 2 to 4, wherein a long hole 255 is formed in the body of each spacer 251 in contact with the outer circumference of the guide rod 23. Jig spacer inserter.