JPH05250983A - Holder and frame welding device for shadow mask - Google Patents

Abstract

PURPOSE:To cope with multiple kinds of products without stopping a device by dividing a slide table into plural ones, making them slidable respectively independently, and fixing one positioning head to each of the slide tables. CONSTITUTION:Positioning heads 7 and 8 to set positions of a frame 2 and a holder 3 are arranged on respectively independent slide tables 15 and 16, and the respective positioning heads 7 and 8 are introduced separately into a welding booth 9. Welding units 10 and 11 move to prescribed positions in the welding booth 9, and weld the positioned frame 2 and holder 3 together. After welding is finished, the positioning head 7 can move the slide table 15 to the operator side without being influenced by a condition of the other positioning head 8. Thereby, even if the positioning head 7 side is in production, the positioning head 8 side can switch the kinds of products.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a holder / frame welding apparatus for a shadow mask in a color cathode ray tube.

[0002]

2. Description of the Related Art Generally, a shadow mask is mounted in a color cathode ray tube. The shadow mask is constructed as shown in FIG. And a holder 3 attached to each corner of the frame 2. When the frame 2 and the holder 3 are welded and assembled, a holder frame welding device is used.

This type of holder frame welding apparatus is conventionally constructed as shown in FIG. 3, in which reference numeral 4 is a base having a rail 5, and 6 is an arrow on the rail 5. One slide table that slides in the direction, 7 and 8 are all positioning heads fixed on the slide table 6 to hold the frame 2 and the holder 3, and 9 is arranged above the slide table 6. The vertically movable welding boots 10, 10 and 11 are all welding units arranged in the welding boot 9, 12 is a welding unit driving unit for moving the welding units 10, 11 to the welding position, 13 and Each of 14 is an operator, and the frame 2 and the holder 3 are welded in the welding boot 9. In this case, since the slide table 6 has two positioning heads 7 and 8, it is possible to mount frames 2 or holders 3 of different types by replacing the jigs on each head 7 and 8.

In actual welding, the worker 1
Reference numerals 3 and 14 designate the frame 2 and the holder 3 for positioning heads 7,
Set to 8 and press the product setting completion switch.
Then, the positioning heads 7 and 8 move into the welding boot 9, and after the welding units 10 and 11 move to the welding position, the frame 2 and the holder 3 are welded. Meanwhile, the workers 13 and 14 set the product on one of the positioning heads 7 and press the product setting completion switch. The slide table 6 automatically moves to the operator 14 side after confirming that welding is completed and that the product setting completion switch on the opposite side is turned on. If the operator 14 on the opposite side delays the timing of placing the product, the slide table 6 is put in a standby state. After that, worker 1
3 removes the welded frame 2 and holder 3 from the positioning head 7.

[0005]

However, the above-described conventional holder frame welding apparatus has the following problems. First, when the positioning head on one side transfers the product, the positioning head on the opposite side also moves at the same time. Therefore, when the positioning head on one side is switched to another type, it is necessary to stop the apparatus. For this reason, the operation rate of the apparatus decreases when other-type mixed production is performed. Further, depending on the timings of the two workers placing the products, the workers on one side are in a standby state when the products are placed. That is, one cycle time is affected by the pace of a person who is slow in loading and unloading the product, which causes a loss of time and lowers production efficiency.

The present invention has been made in view of the above circumstances, and can support a wide variety of products without stopping the device even during production, and enables switching production to significantly improve the production efficiency of the device. -The purpose is to provide a welding apparatus.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a slide table slidably disposed on a base, a holder for a shadow mask fixed on the slide table, and a frame.
The slide head is provided with a positioning head on which a frame is placed, and a welding unit which is arranged above the base and is movable in the vertical direction to weld the holder and the frame.
This is a holder / frame welding device for a shadow mask, which is divided into a plurality of blocks, each of which is slidable independently and one positioning head is fixed to each slide table.

[0008]

According to the present invention, unlike the conventional device, the timing of setting the product on the positioning head is not affected by the timing of the insertion of the product by the operator on one side,
Further, even during production, it is possible to cope with a wide variety of products without stopping the device, and it is possible to carry out switching production, so that the production efficiency of the device can be greatly improved. Furthermore,
There is also the merit that the production cost per unit time can be increased with almost the same equipment cost as before.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

A holder for a shadow mask according to the present invention
The frame welding apparatus is configured as shown in FIG. 1, and the same parts as those in the conventional example (FIG. 3) are designated by the same reference numerals. That is, a rail 5 is provided on the base 4, and a plurality of, for example, two slide tables 15 and 16 are arranged on the rail 5 so as to be slidable in the arrow direction. Positioning heads 7 and 8 are fixed to the slide tables 15 and 16, respectively, and the frame 2 and the holder 3 are placed and held on the positioning heads 7 and 8 during welding. A welding boot 9 is arranged above the base 4 so as to be vertically movable,
Welding units 10 and 11 are arranged in the welding boot 9. Further, the welding unit drive section 12 for moving the welding units 10 and 11 to the welding position is provided with a welding boot.
It is provided in the space 9. The workers 13 and 14 are located on both sides of the base 4, respectively.

Therefore, according to the present invention, the positioning heads 7 and 8 for setting the positions of the frame 2 and the holder 3 are on the independent slide tables 15 and 16, and the positioning heads 7 and 8 are welded independently. Can be led into the boot 9. That is, at the time of welding, the worker 13 mounts the frame 2 and the holder 3 on the positioning head 7 for setting the positions,
Press the start switch (not shown). The positioning head 7 holding the frame 2 and the holder 3 has a welding boot 9
Move in. In the welding boot 9, the welding units 10 and 11 move to a predetermined position to weld the positioned frame 2 and the holder 3. After the welding is completed, the positioning head 7 is not affected by the state of the positioning head 8 on the opposite side, and the slide table 15 allows the operator 1
The frame 2 and the holder 3 welded by the worker 13 are taken out. Further, during this time, the other operator 14 can attach the other frame 2 and the holder 3 to the positioning head 8 regardless of the operation of the positioning head 7. Similarly, even when the positioning head 7 side is in production, the type of the positioning head 8 side can be switched.

As described above, according to the present invention, the positioning heads 7 and 8 for holding the frame 2 and the holder 3 are on the independent slide tables 15 and 16, respectively, and one positioning head 7 is in production. The other positioning head 8 can be stopped. Therefore, even when the type of one of the two positioning heads is switched, it is not necessary to interrupt the production.

[0013]

According to the present invention, the timing for setting the product on the positioning head is the same as in the conventional apparatus.
It is possible to handle a wide variety of products without being affected by the mounting timing of the product by one operator, and without stopping the device during production. Can be greatly improved. Furthermore, there is an advantage that the production cost per unit time can be increased with the facility cost almost the same as the conventional one.

[Brief description of drawings]

FIG. 1 is a front view showing a shadow mask holder / frame welding apparatus according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a shadow mask used for a general color CRT.

FIG. 3 is a front view showing a conventional holder / frame welding device for a shadow mask.

[Explanation of symbols]

1 ... Mask, 2 ... Frame, 3 ... Holder, 4 ... Base, 5
... rails, 7,8 ... positioning heads, 9 ... welding boots,
10, 11 ... Welding unit, 12 ... Welding unit driving part, 13, 14 ... Workers, 15, 16 ... Slide table.

Claims (1)

[Claims] 1. A slide table slidably disposed on a base, a positioning head fixed on the slide table, on which a shadow mask holder and a frame are mounted, and the base. In a holder / frame welding apparatus for a shadow mask, which is arranged above the holder and is movable in the vertical direction, and which comprises a welding unit for welding the holder and the frame. A holder / frame welding device for a shadow mask, wherein each of the positioning heads is fixed to each slide table so as to be independently slidable.