JPS5923060B2 - dummy panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dummy panel for transporting a shadow mask, which facilitates automatic attachment of a shadow mask to a panel, etc. in a color picture tube manufacturing process.

In general, during the manufacturing process of color picture tubes, multiple exposure steps are required to form light-absorbing substances and phosphor dots of the three colors R, G, and B, and to combine the tahini panel and shadow mask. There is a need.

However, in the past, the attachment and detachment of this shadow mask to and from the panel was mainly done manually by an operator, which had a major drawback of extremely low work efficiency.

Therefore, an automatic device was devised to automatically attach and detach such a shadow mask and panel, but since the shadow mask is mainly composed of a thin copper plate with low rigidity, it is difficult to handle and the shadow mask to the automatic device is difficult to handle. transportation of masks,
The disadvantage is that positioning must be done manually.

The present invention has been made in view of the above-mentioned drawbacks of the conventional art, and provides a shadow mask that is configured to automatically attach a shadow mask that is attached via a spring to a panel pin protruding from the inner surface of a panel of a color picture tube. A dummy panel is provided which serves as means for transporting a shadow mask to a mask attaching/detaching device and means for positioning the shadow mask in the mask attaching/detaching device.

Hereinafter, the present invention will be described in detail together with embodiments shown in the drawings.

The dummy panel according to the present invention has a structure as shown generally by reference numeral 53 in FIG.

That is, the dummy panel 53 consists of a rectangular frame 58, and the inner surface thereof has a fitting hole 56 formed at the free end of a leaf spring-shaped mounting spring 55 whose one end is fixed to the side surface of the shadow mask 54. Pins 57 are installed at precisely corresponding positions, and the shadow mask 54 is configured to be attached to the pins 5T via the attachment springs 55.

As shown in an enlarged view in FIG. 3, the pin 57 has a small-diameter recessed portion 57a at its tip, and a tapered surface so that it can be easily fitted into the fitting hole 56.

As is clear from FIG. 2, the flange portion of the frame 58 of the dummy panel 53 is provided with reference holes 59 and 60 for positioning the shadow mask in the shadow mask i placement device.

The enlarged view shown in FIG. 4 is for explaining the panel pin 62 implanted in the panel 61 of the color picture tube, which also has a small diameter portion at the tip and a tapered surface for easy installation of the mounting spring. It is formed.

FIGS. 5 to 7 explain the automatic shadow mask attaching/detaching device. In the figures, the reference numeral 1 indicates a base, and on this base 1 there is a supporting base 2 as shown in FIG. .3 are fixed facing each other at regular intervals.

As shown in FIG. 1, an air cylinder 4 is fixed to the support stands 2 and 3, and the rod of this air cylinder 4 extends through the upper plate of the support stand 2.3, and has a guide shaft at its tip. 6,
A lifting platform 5 guided by 7 is fixed.

As is clear from FIG. 7, on the lifting table 5, the support table 2.
A mounting plate 6a is positioned in a fixed state on the mounting plate 3, and pads P made of an elastic body such as rubber are fixed to both ends of opposing edges of the mounting plate 6a, respectively.

On the other hand, an air cylinder 8 is fixed on the lifting platform 5,
The tip of the rod is linked to an L-shaped positioning mold 10 having a pivot point on a support 9 installed on the lifting table 5.

As shown in FIG. 5, a panel pin guide groove 11 whose upper end is widened is formed at the tip of the positioning die 10. As shown in FIG.

Furthermore, a guide pin 12 is implanted on the opposing end side of the mounting plate 6a to fit into a positioning fitting hole drilled in the lower edge of the dummy panel described above between the para-P.

On the other hand, a support stand 13 is fixed on the base 1 in a state perpendicular to the straight line connecting the pair of support stands 2 and 3 arranged opposite to each other, and the rod of the air cylinder 14 fixed to this support stand 13 is A lifting table 15 extending through the upper plate of the support table 13 and guided by a guide rod 16 is fixed to the tip thereof.

An air cylinder 17 is fixed on the lifting table 15, and the tip of the rod is connected to the approximately central part of a substantially U-shaped positioning mold 19 that is rotatably supported on a column 18 installed on the lifting table 15. The links are combined.

As is clear from FIG. 5, a panel pin guide groove 20 whose upper end is widened is also formed at the tip of this positioning mold 19.

Furthermore, in the space formed by the pair of support stands 2 and 3 and the support stand 13, an air cylinder 21 attached to the base plate 1 is used to raise and lower the guide rod 22.
A lifting platform 23 guided by is arranged.

A positioning plate 25, which is raised and lowered by an air cylinder 24, is fixed on the lifting platform 23, and the positioning plate 25 has at least three positions on its outer surface, that is, positions facing the panel pins of the panel as shown in FIG. A positioning piece 26 having a U-shaped groove, a portion of which is shown, is provided to protrude upward.

This positioning plate 25 is normally connected to a guide rod 28 that connects the mask holder 27 and the lifting platform 23 located above the positioning plate 25.
You will be guided up by the.

As shown in FIG. 5, the mask holder 27 has a disc-shaped grooved cam 29 attached to its upper surface.
When the mask holder 27 is rotated by a torque actuator 30 fixed to the lower surface of the mask holder 27, a locking pawl 31 that deflects a mounting spring of the shadow mask expands and contracts in accordance with the rotation angle.

Of the locking claws 31, the locking claw 31a on the opposite side of the positioning mold 19 may be wide as shown in FIG. 5, but it may be narrow as shown in FIG. Either one is fine.

Further, as is clear from FIGS. 5 and 6, frame guides 32 made of an elastic material such as rubber are fixed to the four corners of the mask holder 27.

Next, the operation of this embodiment configured as above will be explained.

First, the positioning molds 10 and 19 are at the lower limit of rotation, and the lifting platform 2
3 is at its lower limit, a dummy panel (not shown) accommodates a shadow mask and is positioned by fitting a fitting hole formed in the lower end surface of the guide pin 12 on the mounting plate 6a. It will be placed.

In this state, the shadow mask (not shown) is accurately positioned by the pins of the dummy panel.

Next, the air cylinder 21 is activated, the lifting platform 23 is raised, the mask holder 27 is also raised, the locking claw 31 enters between the dummy panel and the mounting spring attached to the side of the shadow mask, and the torque actuator 30 is activated, rotates the grooved cam 29, retracts the locking pawl 31, presses the mounting spring toward the shadow mask, and releases it from the pin of the dummy panel.Then, the air cylinder 21 is activated again and the lifting platform 23 is moved. The shadow mask attached to the mask holder 27 is lowered.

Thereafter, the dummy ++ panel is removed from the mounting tables 2 and 3 by a transport device (not shown).

The operations up to this point are preliminary operations before the shadow mask device operates.

Next, as shown by reference numeral 61 in FIGS. 6 and 7, the butt P of the mounting plate 6a is placed in a state where the panel is roughly positioned by a transport device (not shown) with an accuracy within the operating accuracy of the transport device. placed on top.

Then, the air cylinder 8.11 operates, and the shallow type 10
．． 19 rotates, enters the inside of the panel 61, and guides the panel pin 62 into the guide groove 11.20 at its tip as shown in FIG.
After accurately positioning, it returns to its original state.

The positioning plate 25 is raised by the air cylinder 24 and approaches the mask holder 27, and the positioning piece 26 having the U-shaped notch is aligned with the locking claw 31.

In this state, the mask holder 27 with the shadow mask attached rises together with the lifting table 23 raised by the air cylinder 21, and the positioning pieces 26 sandwich the panel pins 62 of the panel 61 and position and fix them.

After that, the locking claw 31 is released, the shadow mask mounting spring that has been pressed until now is expanded, and the panel pin 62 is released.
mated with.

In this way, after the shadow mask has been attached to the panel, the air cylinders 21 and 24 are activated again.
The lifting platform 23 and the positioning plate 25 return to their original states.

The panel with the shadow mask attached is transported to the next process by a transport device (not shown).

In this way, one cycle of the shadow mask device is completed, and the above cycle is repeated thereafter.

Removal of the shadow mask from the panel is performed in the reverse order as described above. In this case, since the shadow mask in the panel becomes an obstacle to guide the panel pin 62 in the shallow type 10° 19, the shadow mask in FIG. 4 is used instead of the panel pin 62. Press the inner surface 64 near the sealing surface 63 of the panel 61 shown to position the panel.

Panel positioning using this method is not necessarily accurate because the dimensions of the panels vary from one panel to another.

Therefore, when attaching a shadow mask to a dummy panel, it is necessary to absorb variations in the inner dimensions of the panel.

FIG. 8 shows the process of removing the shadow mask from the panel and attaching it to the dummy panel. First, as shown in FIG. 31, the spring 55 is held and removed from the panel pin 62, resulting in the state shown in FIG.

In this state, the shadow mask is lowered and the panel is transported and removed (FIG. 8C).

Next, when the dummy panel is conveyed and positioned on the shadow mask, the shadow mask is raised to the state shown in FIG. 8d.

When the locking pawl 31 is opened, the hole 56 of the spring 55 is fitted into the narrow diameter part of the tip of the pin 57 of the dummy panel, and then the position of the shadow mask is guided correctly according to the slope of the pin 57, as shown in FIG. Fix it in the state of .

This allows the shadow mask to be accurately positioned and held within the dummy panel.

As is clear from the above description, according to the present invention, it is possible to accurately transport and position the shadow mask to the shadow mask attachment/detachment device, and also to accurately position and hold the shadow mask removed from the panel. This can be done accurately and automatically, and the efficiency of the shadow mask mounting work is greatly improved.

[Brief explanation of the drawing]

The figures are for explaining one embodiment of the present invention, and Fig. 1 is a perspective view of a dummy panel, Fig. 2 is an enlarged plan view, Fig. 3 is an enlarged view of a mounting pin of the dummy panel, and Fig. 4 is a panel pin. Figure 5 is a perspective view of the shadow mask attaching/detaching device, Figure 6 is an enlarged view of
The figure is a plan view, FIG. 7 is a side view of the developed state, and FIG. 8 is an explanatory diagram of the state in which the shadow mask is transferred from the panel to the dummy panel. 1... Base, 2.3. 13... Support stand, 4,8 degrees 14.17, 21.24... Air cylinder, 5 degrees 23
... Elevating table, 6a... Placement table, 7... Bat, 1
0゜19... shallow position type, 11.20... guide groove,
12... Guide pin, 25... Positioning plate, 26...
- Positioning piece, 27... Mask holder, 29... Groove cam, 30... Torque actuator, 31... Locking claw, 53... Tammy panel, 54... Shadow mask, 55...・Mounting spring, 56...fitting hole,
57... Pin, 58... Frame, 59.60... Reference hole, 61... Panel, 62... Panel pin, 6
3... Seal surface, 64... Panel inner surface.

Claims (1)

[Claims] 1 Consisting of a square frame body, on its inner surface, at least three pins that fit into the fitting holes of the shadow mask mounting springs are implanted, and at least two pins are embedded in the flange part of the frame body. A dummy panel for conveying a shadow mask, characterized by having a reference hole drilled therein.