JPH0218916Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an insulating agent coating device that applies an insulating agent around the anode of a cathode ray tube.

[Technical background of the invention and its problems] As shown in FIG. 1, around the anode 2 of the cathode ray tube 1, there is a
An insulating material 4 such as silicone is applied in a ring shape.

Conventionally, the application of the insulating agent 4 is carried out on a cathode ray tube 1 rotatably supported on a conveyor frame 5 of a trolley conveyor via a rubber ring 6 in a production line for cathode ray tubes 1, as shown in FIG. Anode 2
The operator 7 engages the engagement portion 9 at the tip of the brush rod 8 held by the worker 7 with the brush rod 8 , and contacts the brush 10 provided on one side of the tip of the brush rod 8 with the cathode ray tube 1 . By rotating the brush rod 8 1.5 to 2 times, the insulating agent 4, which had been impregnated in the brush 10, was applied around the anode 2.

However, in the case of such application by the operator 7, the application condition and rotational speed of the brush 10 are not constant, and the number of rotations cannot be increased, so the application state is not stable, and as shown in FIGS. 3A, B, and C. As shown in Figure 2, there was a problem in that the insulating material 4 was prone to sagging, dust, and scratches/unevenness.

[Purpose of the invention] The present invention was devised in view of the above-mentioned points, and aims to automate the application of an insulating agent and stabilize the application state.

[Summary of the invention] The insulating agent applicator of the present invention is an insulating agent applicator that applies an insulating agent around the anode of a cathode ray tube. A coating mechanism includes a drive source and a drive source for advancing and retracting the applicator toward and from the anode portion of the cathode ray tube, an adjustment mechanism that moves the coating mechanism according to the position of the anode, and a coating mechanism that blows dry air to the anode portion of the cathode ray tube. The invention is characterized in that it is equipped with an air blowing mechanism that attaches to the air.

[Embodiment of the Invention] An insulating agent coating apparatus of the present invention will be described in detail based on an embodiment shown in the drawings.

In FIG. 4, numeral 11 is a pallet that supports the cathode ray tube 1;
It is designed to move on a conveyor 12 provided on a production line.

A network 13 which can be opened and closed and holds the neck portion 1a of the cathode ray tube 1 is provided at the position where the insulating agent 4 is applied in the production line. (X direction), lateral direction (Y direction), and depth direction (Z direction).

Furthermore, a coating mechanism 14 is provided on one side of the conveyor 12 at the position where the insulating agent 4 is coated. This application mechanism 14 includes a brush 1 as an application body.
5 is attached to one side of the tip of a shaft 16, and this shaft 16 is connected to a motor 19 as a rotational drive source through gears 17 and 18, and these brushes 15, shaft 16, motor 19, etc. are used as a forward/backward drive source. It is formed so as to integrally move forward and backward in the direction of the axis 16 using an air cylinder 20 for forward and backward movement.

The coating mechanism 14 is connected to the conveyor 1 by an air cylinder 21 for moving and adjusting the adjustment mechanism.
2, that is, in the lateral direction (Y direction) of the positioned cathode ray tube 1.

Further, a container 22 containing the insulating agent 4 is provided below the coating mechanism 14, and a pair of aperture plates 23 on both sides are provided at the upper opening of the container 22 so as to be openable and closable.

Furthermore, an air nozzle 24 of an air blowing mechanism is provided facing the conveyor 12 on one side of the conveyor 12 at the position where the insulating agent 4 is applied.

Next, the operation will be explained.

Note that before the pallet 11 supporting the cathode ray tube 1 is moved by the conveyor 12 to the application position of the insulating material 4, the brush 15 of the application mechanism 14 is directed toward the container 22 by shortening the moving/adjusting air cylinder 21, and then It is assumed that the brush 15 is immersed in the insulating agent 4 in the container 22 due to the extension of the advancing/retracting air cylinder 20 of the coating mechanism 14 .

Then, the pallet 11 supporting the cathode ray tube 1
When the pallet 11 is moved to the coating position by the conveyor 12, the pallet 11 is stopped by a stopper (not shown), and the neck portion 1a of the cathode ray tube 1 is held by the neck 13, thereby positioning the cathode ray tube 1.

When the cathode ray tube 1 is positioned, the brushes 15 rise from the container 22 by shortening the advance/retreat air cylinder 20, and during this rise, the brushes 15 are squeezed by the aperture plate 23 to remove excess insulating material 4. Then, after the shaft 16 of the brush 15 is directed toward the anode 2 of the cathode ray tube 1 by the extension of the moving/adjusting air cylinder 21, the brush 15 is moved toward the cathode ray tube 1 by the extension of the advancing/retracting air cylinder 20.
The motor 1 is brought into contact with the outside of the anode of the motor 1.
9, the shaft 16 rotates two to three times to apply the insulating agent 4 impregnated in the brush 15 around the anode 2, and air is blown onto the anode 2 from the air nozzle 24 as shown in FIG. This prevents "sagging", "dust", "fading", "unevenness", etc. of the insulating material 4 and promotes drying.

When the rotation of the shaft 16 is completed, the brush 15 is moved to the cathode ray tube 1 by the shortening of the air cylinder 20 for advancing and retreating.
Move away from the air cylinder 2 for movement/adjustment.
1 and the advancing/retracting air cylinder 20 is extended, the brush 15 is again immersed in the insulating material 4 in the container 22 and holds the next pallet 11.

Further, when the insulating material 4 applied to the cathode ray tube 1 dries after a predetermined period of time has elapsed, the air nozzle 24
At the same time, the air blowing from the pallet stops, and the stopper that stopped the pallet 11 is released.
The pallet 11 is moved to the next process by a conveyor 12.

Further, in the production line of the cathode ray tube 1, cathode ray tubes 1a and 1b of different sizes are mixed and produced. In this case, as shown in FIG. 5, if the sizes of the cathode ray tubes 1a and 1b differ, the positions of the anodes 2a and 2b also change. and the size signals of the cathode ray tube 1 are sequentially inputted to the control unit of the adjustment mechanism, thereby changing the amount of expansion of the advance/retreat air cylinder 20 of the coating mechanism 14 and the movement/adjustment air cylinder 21 of the adjustment mechanism. You can respond by doing this.

In the above-described operation, the aperture plate 23 can be used to aperture the brush 15 by opening and closing the aperture plate 23 freely and closing the aperture plate 23 when squeezing the brush 15. At the same time, the aperture plate 23 is attached to the container 22.
If the brush 15 is always biased in the closing direction by a spring or the like, the aperture plate 23 will be opened by the brush 15 when the brush 15 enters the container 22, and when the brush 15 leaves the container 22, The brush 15 is squeezed by the squeeze plate 23 which is urged in the closing direction by a spring.

In addition, an air cylinder 2 for moving and adjusting the adjustment mechanism
The movement of the coating mechanism 14 according to No. 1 may be rotation around a point 0 at the rear of the coating mechanism 14 (arrow a in the figure), or linear movement (arrow b in the figure).

Further, in the above-described operation, the pallet 11 is stopped when applying the insulating material 4, but it is not necessarily necessary to stop the pallet 11.
1, the network 13, the coating mechanism 14, the air cylinder 21 for moving/adjusting the adjustment mechanism, the air nozzle 24, etc. may be moved in synchronization with the conveyor 12.

Note that due to the layout of the production line, if the insulating material 4 is applied after applying a high voltage to the cathode ray tube 1, the state of the insulating material 4 applied tends to become unstable as shown in FIG. In this case, a discharge mechanism is provided to discharge the applied high voltage to stabilize the coating state.

[Effects of the invention] As described above, according to the invention, the coating body is advanced and retreated from the anode portion of the cathode ray tube, and the coating body is rotated by the anode portion, so that the application of the insulating agent is automatically performed. In addition to being able to
The coating condition is stable, and since drying air is blown onto the anode section, the coating condition is even more stable and drying can be accelerated.Furthermore, the coating mechanism can be moved according to the position of the anode. This makes it possible to apply the coating appropriately to cathode ray tubes of different sizes.

[Brief explanation of drawings]

Figure 1 is a diagram of a cathode ray tube coated with an insulating agent, Figure 2 is a diagram showing the conventional method of applying an insulating agent, Figure 3 is a diagram showing the state of applying an insulating agent showing its drawbacks, and Figure 4 is a diagram of the method of applying the insulating agent of the present invention. FIG. 5 is a perspective view showing an embodiment of an insulating agent coating device, and FIG. 5 is a diagram showing the positions of anodes of cathode ray tubes of different sizes. 1, 1a, 1b... Braun tube, 2, 2a, 2
b...Anode, 4...Insulating agent, 14...Applying mechanism, 15...Brush as an application body, 19...Motor as a rotational drive source, 20...Air cylinder for advancing and retracting as a forwarding/retracting drive source, 21 ... Air cylinder for moving and adjusting the adjustment mechanism, 24 ... Air nozzle of the air blowing mechanism.

Claims (1)

[Claims for Utility Model Registration] An insulating agent applicator for applying an insulating agent around the anode of a cathode ray tube, comprising: an applicator impregnated with an insulating agent, a rotation drive source for rotating the applicator, and a rotating drive source for rotating the applicator. a coating mechanism consisting of an advancing/retracting drive source that moves the anode section of the cathode ray tube forward and backward; an adjustment mechanism that moves the coating mechanism according to the position of the anode; and an air blowing mechanism that blows dry air to the anode section of the cathode ray tube. An insulating agent coating device characterized by comprising: