JPS6231467B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cathode ray tube exhaust device.

In the cathode ray tube exhaust process, an exhaust truck with a built-in vacuum pump is used. This is shown in FIG. A cathode ray tube, which is an object to be exhausted, is composed of a tube body 21 and an exhaust pipe 22, as shown in FIG. Conventionally, the task of attaching a cathode ray tube to an exhaust truck has relied on manual labor, and the sequence of work is to first place the cathode ray tube on the cathode ray tube support arm 12 provided on the exhaust truck 11, grasp the cathode ray tube neck 23, and then close the exhaust port 13. While adjusting the position, the support arm lowering handle 14 is turned to lower the support arm 12, and the exhaust pipe 22 is inserted into the exhaust port 13.

Recently, transfer technology has progressed, and it has become possible to automatically transfer the CRT onto the CRT support arm of the exhaust truck, but it is difficult to assemble the exhaust truck to insert the exhaust pipe into the exhaust port without damaging it. Due to poor accuracy and the small clearance between the exhaust pipe and the exhaust port (approximately 0.5 mm), it had to be done manually. In addition, the exhaust truck moves at a constant speed (approximately 10 mm /
sec), and it was extremely difficult to automatically insert the exhaust pipe while following the exhaust truck.

The present invention relates to a cathode ray tube exhaust system that has a mechanism for aligning the centers of an exhaust pipe and an exhaust port on a movable platform that follows the movement of an exhaust truck. The feature is that the exhaust pipe can be automatically inserted into the exhaust port.

An embodiment of the present invention will be described below with reference to FIGS. 3 and 4. First, a cathode ray tube exhaust cart 11 that moves at a constant speed has an exhaust pump (not shown) built therein, and a cylindrical exhaust port communicating with this exhaust pump is provided. Furthermore, this exhaust trolley 11 has a cathode ray tube support arm 12 that can be moved up and down.
are juxtaposed. Then, with respect to the moving exhaust truck, the exhaust truck is detected at a predetermined position, and the moving platform 31, which runs parallel to the exhaust truck 11, follows. A slider 32 that can move forward and backward is provided on a movable platform 31 that follows the movement of the exhaust truck 11. One end of a flexible support mechanism consisting of a fulcrum 33 and a link 34 is attached to this slider 32, and the other end is attached to an exhaust pipe. It is connected to the insertion main body 35. The exhaust pipe insertion main body 35 has an exhaust port chuck arm 36,
37 and air cylinder 3 for opening and closing the chuck arm.
An exhaust port chuck mechanism consisting of 8 is provided. In addition, the chuck arm 3 of the cathode ray tube neck section
9, 40 and air cylinder 4 for opening and closing chuck arm
The cathode ray tube neck chuck mechanism consisting of 1 is also connected to the exhaust pipe insertion body 35 via slide rods 42 and 43 so that it can move up and down with respect to the exhaust pipe insertion body 35. The center of the gripping portion of the exhaust port chuck mechanism and the center of the gripping portion of the cathode ray tube neck chuck mechanism are set in advance to be coaxial with the center of the exhaust port chuck.

A spring 4 is installed around the slide rods 42 and 43.
4 and 45 are provided, and the cathode ray tube neck chuck mechanism is pushed upward by this spring during normal times. Further, the movable table 31 is provided with a motor 46 for lowering the cathode ray tube support arm 12, and can be rotated by an external signal to turn the support arm lowering handle 14. The cathode ray tube mounted on it can be lowered. Note that the support arm can be returned to its original position by rotating the motor 46 in the reverse direction.

The cathode ray tube exhaust device having the above configuration will be explained in accordance with the following operating order.

As shown in Figure 4, the cathode ray tube is mounted on an exhaust truck 11.
The tube is mounted on the cathode ray tube support arm 12 and carried. When the exhaust truck reaches the movable platform 31, a detector (not shown) first detects that the movable platform 31 is located at the exhaust vehicle 1.
1. Start following movement. When stable follow-up movement is obtained, the slider 32 moves forward in the direction of the exhaust truck, and when the forward movement is completed, the air cylinder 38 is activated and the exhaust port chuck arms 36, 37 grip the exhaust port. At this time, the flexible support mechanism consisting of the fulcrum 33 and the link 34 expands and contracts to maintain the exhaust port 13 and the exhaust pipe insertion main body 35 in a predetermined position without strain.
That is, even if the accuracy of assembling the exhaust truck and the tracking accuracy of the movable platform with respect to the exhaust truck are poor to some extent, the flexible support mechanism allows the exhaust port and the exhaust pipe insertion body to be maintained at predetermined positions without difficulty.

Next, the air cylinder 41 is operated and the cathode ray tube neck chuck arms 39, 40 grip the neck of the cathode ray tube. By gripping both the exhaust port and the neck, the center of the CRT is positioned at the center of the exhaust port, and then the motor 46 is rotated by a signal obtained by a known detection means to lower the support arm 12, and the CRT exhaust pipe is rotated by the motor 46 to lower the support arm 12. 22 into the exhaust port 13. When the support arm 12 is lowered, the neck chuck mechanism is also lowered together with the cathode ray tube on the support arm, constantly working to align the center of the cathode ray tube with the center of the exhaust port. When the insertion of the cathode ray tube exhaust pipe into the exhaust port is completed, both the chuck mechanisms of the exhaust port and the neck part are switched from the gripping state to the release state, the slider 32 is separated from the exhaust cart, the movable table 31 returns to its original position, and a series of The operation is complete.

As described above, the cathode ray tube exhaust device according to the present invention combines two gripping functions for aligning the center of the cathode ray tube with the center of the exhaust port of the exhaust trolley and a flexible support mechanism, so that the cathode ray tube exhaust pipe can be exhausted without damaging the cathode ray tube exhaust pipe. It has the advantage of being able to be inserted into the exhaust port of the truck.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an exhaust truck for explaining the present invention, Fig. 2 is a perspective view showing a cathode ray tube, Fig. 3 is a perspective view showing an embodiment of the cathode ray tube exhaust device of the invention, and Fig. 4. FIG. 2 is a side view for explaining the operation of inserting an exhaust pipe in the embodiment of the cathode ray tube exhaust device of the present invention. 11... Exhaust trolley, 12... Braun tube support arm, 13... Exhaust port, 21... Braun tube body,
22...Exhaust pipe, 23...CRT network part,
31...Moving table, 33...Fully point, 34...Link, 35...Main body for inserting cathode ray tube exhaust pipe, 3
6, 37... Exhaust chuck arm, 39, 40...
Network part chuck arm.

Claims (1)

[Scope of Claims] 1. A cathode ray tube exhaust truck that moves at a constant speed and has a built-in exhaust pump, and a cylindrical exhaust port that communicates with the exhaust pump and projects from the exhaust truck, into which the cathode ray tube exhaust pipe is inserted. a plurality of cathode ray tube support arms protruding from the upper part of the exhaust truck, which are lowered by a motor rotated by an output signal from a detection means described later, and returned when the motor reverses; and detecting a predetermined position of the exhaust truck. a slider disposed on this moving table and moving back and forth in the direction of the exhaust truck; a flexible support mechanism having one end fixed to the slider and the other end moving in the left-right and front-rear directions; an exhaust pipe insertion body fixed to the other end of the flexible support mechanism; an exhaust chuck mechanism fixed to the lower part of the exhaust pipe insertion body and detachably gripping the exhaust port of the exhaust truck; A cathode ray tube neck fixed to the upper part of the exhaust pipe insertion body and detachably grips the neck portion of the cathode ray tube supported by the cathode ray tube support arm, and is arranged to be movable up and down with respect to the exhaust pipe insertion body via a spring. 1. A cathode ray tube exhaust device comprising: a partial chuck mechanism; and a detection means for detecting coincidence between the center of the cathode ray tube and the center of the exhaust port when the cathode ray tube and the exhaust port are gripped by the two chuck mechanisms.