JPS61211933A - Apparatus for setting up shadow mask - Google Patents

Abstract

PURPOSE:To enable both a panel and a shadow mask with different sizes to match with each other by switching respective positions, by means of a switching measure, between a positioning unit consisting of devices for positioning both panel and mask and a claw as well as a panel receiver of a holder device. CONSTITUTION:A panel positioning device 20 which constitutes a positioning unit 10, drives by means of a driving measure 22 a positioning lever 21 which is engaged with the panel pin P1 of a panel P, and a mask positioning device 30 drives with a driving measure 32 a mask positioning pin 31 which is engaged with the spring hole M2 of a spring M1 in a shadow mask M. A holder device 40 has a claw 41 for bending the spring M1 in the shadow mask M, a frame retainer 42 for holding a frame M3 in the shadow mask M and a panel pin receiver 43 for positioning the panel pin P1 in the panel P. The claw 41 is connected to a slider 45 through a pair of driving measures 44A, 44B and the slider 45 behaves inwardly by means of the grooved cam 48 which makes a turning motion in gearing with a torque actuator 47 which is fixed on a vertically movable plate 46.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a shadow mask mounting device for automatically mounting a shadow mask on a panel in a color picture tube manufacturing process.

[Background of the invention]

Generally, in the manufacturing process of color picture tubes, it is necessary to repeat the exposure process many times in order to form light-absorbing substances and phosphor dots in the three colors of A (red), G (green), and B (blue). ,
It is necessary to combine the shadow mask with the panel each time.

Conventionally, as a device for attaching a shadow mask to a panel, for example, Japanese Patent Publication No. 59-35494 and Japanese Patent Publication No. 59-4
The one shown in Japanese Patent No. 2942 is known. However, all of these shadow mask mounting devices are dedicated machines that can only be applied to a single type of product, so many devices are required for products that are manufactured in a wide variety of products, such as color picture tubes.
There was a problem in that the cost of production equipment was high. Particularly in the case of high-mix low-volume production, in addition to the above-mentioned problems, there is another problem in that the operating rate of the equipment is significantly reduced.

[Purpose of the invention]

One object of the present invention is to provide a shadow mask mounting device that has versatility and can be adapted to the production of a wide variety of products.

Another object of the present invention is to provide a shadow mask mounting device that can quickly change product types.

[Summary of the invention]

According to an embodiment of the present invention, there is provided a shadow mask mounting device in which the positions of a positioning unit including a panel positioning device and a mask positioning device, and a claw and a panel receiver of a holder device are switched by a switching means. . This has the effect of being able to accommodate panels and shadow masks of different sizes.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be explained with reference to FIGS. 1 and 2. The shadow mask mounting device according to the present invention mainly positions the panel P shown in FIG. 3 and the shadow mask M shown in FIG. 4. A holder device [40] that holds the positioned panel P and shadow mask M, and a mask vertical movement device 60 that moves the shadow mask M up and down.

Positioning Unit 10 The positioning unit 10 includes a panel positioning device 20 that positions the panel P, and a mask positioning device 30 that is disposed below the panel positioning device 20 and positions the shadow mask M.
is integrated into the sliding block 11. The sliding block 11 is a support block 13 fixed to the base 12.
It is slidably provided on the top, and is driven by a pair of drive means 14A, 14B, so that it can assume three positions depending on the product type. The positioning unit (10) having such a configuration has three panel pins P as a reference for the panel P,
All three drive means 14A and 14B have the same structure, but only the strokes of the drive means 14A and 14B differ between the long diameter side and the short diameter side of the panel P.

The panel positioning device 20 is configured such that a positioning lever 21 that engages with a panel pin P of a panel P is driven by a driving means 22. The mask positioning device 30 is configured to drive a mask positioning pin 31 that engages with a spring M of a shadow mask M and a spring hole M of the shadow mask M using a driving means 32.

Moreover, since this embodiment shows a case where it is applied to a 4-pin panel, in addition to the mask positioning device 30 incorporated in the three positioning units 10, a spring is installed so as not to engage with the spring hole M of the shadow mask M. A mask positioning device 34 having a hole M and a larger blind pin 33 in place of the mask positioning pin 31 is provided.

The structure of the panel positioning device 20 and the mask positioning device 30, 33 itself is disclosed in Japanese Patent Publication No. 59-429.
Since it is almost the same as No. 42, further explanation will be omitted here.

Holder device 40 The holder device 40 includes a spring M of the shadow mask M,
The claw 41 that bends the frame M of the shadow mask M
, and a panel pin receiver 43 for positioning the panel pin P of the panel P.

The pawl 41 is connected to a slider 45 via a pair of driving means 44A, 44B, and the slider 45 is moved inward by a grooved cam 48 that rotates in conjunction with a torque actuator 47 fixed to a vertical moving plate 46. It is supposed to work. A driving means 49 for driving the frame presser 42 and a panel pin receiver 43 are fixed to a movable holder 50, and the movable holder 50 has a pair of driving means 51A, 51B.
It is connected to the vertical moving plate 46 via.

The vertically movable plate 46 is connected to the guide tube 5 fixed to the base 12.
Three elevating shafts 53 (1 in the figure) are slidably provided on 2.
(Only books are shown)
is supported by a connecting plate 54. Also, the vertical moving plate 46
A driving means 55 is fixed to 1ζ, and this driving means 55 is connected to a driving means 56 fixed to the base 12.

Mask vertical movement device 60 The mask receiver 61 on which the shadow mask M is placed is.

A plurality of pins/62 are installed at four positions to receive the corners of the shadow mask M, and are implanted so as to guide the inside and outside of the frame M of the shadow mask M of different types. Further, the mask receiver 61 is attached to a lifting shaft 64 which is slidably provided on a guide tube 63 fixed to the base 12.
The lower ends of the four lifting shafts 64 are fixed to the upper ends of the connecting plates 6
It is fixed at 5. A driving means 66 is fixed to the connecting plate 65, and this driving means 66 is connected to a driving means 67 fixed to the base 12.

A panel receiver 70 on which other mechanism panels P are placed is fixed to the side surface of the mask positioning device 33, and this panel receiver 70
A panel balancer 71 for preventing the panel P from tilting is provided on the inner side of the panel P. In addition, the panel P is mounted on the panel holder 70.
A panel guide 72 is provided at the top of the panel positioning device 20 to guide the panel. Further, below the mask positioning pin 31, the mask positioning pin 31 (1!-
A spring guide member 73 that guides the lower surface of the spring M is integrally provided. The shadow mask M is positioned by the mask positioning pin 31 engaging the spring hole M. By the way, spring hole M! The dimension from spring hole M to the bottom surface of frame M3 varies widely, but the dimension from spring hole M to the bottom surface of spring M is spring M.

Since it is made from molded products, the variation is small. Therefore, as described above, by providing the spring guide member 73 that guides the lower surface of the spring M, positioning of the shadow mask M becomes easier.

Next, the effect will be explained. This embodiment shows a case where the present invention is applied to three types of panels P and shadow masks M of different sizes. In the case of the smallest of the three types, the driving means 14A and 14B are both turned on. As a result, the sliding block 11 slides on the support block 13 and the first positioning unit 10. That is, the panel positioning device 20 and the mask positioning device 30 are moved toward the center. Further, the driving means 44A and 44B are both operated so as to be turned off. As a result, the claw 41 slides on the slider 45 and is moved toward the center. Further, the driving means 51A,
51B are both turned off. As a result, the frame presser 42 and the panel pin receiver 43 are moved toward the center together with the movable holder 50. This completes the process of switching to the smallest type.

For the largest varieties, drive means 14A, 14B are both turned off, and drive means 44A, 44B and 51A are turned off.
, 51B are turned on, the positioning unit 10, frame presser 42, and panel pin receiver 43 are positioned outside.

In the case of an intermediate type, by turning on one of the driving means 14A, 14B, turning on one of the driving means 44A, 44B, and then turning on one of the driving means 51A, 51B. , positioning unit 10
, the frame presser 42 and the panel pin receiver 43 are located at an intermediate position between the minimum type and the maximum type described above.

When the switching operation corresponding to the applicable product type is completed in this way, a normal shadow mask attachment/removal operation is performed. This operation is performed by operating the drive means 22 to return the positioning lever 21, and by operating the drive means 55 to move the vertically moving plate 46.
This is done with the mask receiver 61 being lowered from the state shown in FIG. 2 and the driving means 67 being activated to raise the mask receiver 61.

First, the shadow mask M is transported by a transport device (not shown) and placed on the mask receiver 61. As a result, the shadow mask M becomes the mask frame M.

The inner side of the frame is approximately positioned by the pin 62.

Next, the mask receiver 61 on which the shadow mask M is placed is lowered by the driving means 67. Subsequently, the drive means 32 drives the
The mask positioning pins 31 and the blind pin 33 protrude to probe the spring hole M of the shadow mask M. In this state, the drive i-stage 66 is operated and the mask receiver 61 is
The shadow mask M is positioned and held by three positioning pins 31 and one blind pin 33.

Next, the driving means 55 is actuated to raise the vertical moving plate 46, and the claw 41 and the panel pin receiver 43 are located outside the mask spring M. In this state, the drive means 49 is operated, and the frame presser 42 supports and fixes the inside of the mask frame M. Thereafter, the torque actuator 47 operates to rotate the grooved cam 48, and the pawl 41 operates inward to deflect the mask spring M1 inward. After that, the driving means 3
2 operates and the mask positioning pin 31 and blind pin 33
returns to the outside, and in this state waits for the completion of positioning of the panel P.

As described above, the shadow mask M is placed on the mask holder 61, and after the mask holder 61 is lowered, the panel P is moved to the panel holder 7° and the panel guide 7 by a transport device (not shown).
2. Next, the positioning of this panel P is performed during the positioning operation of the shadow mask M. The drive means 22 is operated to rotate the positioning lever 21, and positioning on the horizontal plane is performed with the panel pin P as a reference. After positioning the panel P, the drive means 22 is activated again and the positioning lever 21 returns to its original state.

Thereafter, the vertically movable plate 46 of the holder device 40 to which the shadow mask M is attached is raised by the drive means 56, and the panel pin receiver 43 positions the panel pin P1. At this time,
The panel balance 71 prevents the panel P from tilting.

After the panel P is positioned in this way, the torque actuator 47 is activated, and the grooved cam 48 moves the pawl 41
releases the mask spring M, which had been pressed until now,
The frame presser 42 is returned by the driving means 49. Subsequently, by lowering the vertical moving plate 46 using the driving means 56, the mask spring M is completely attached to the panel pin P1.

Thereafter, the panel P with the shadow mask M is transported to the next process by a transport device (not shown). Also, the driving means 66.
67 causes the mask receiver 61 to rise, and the driving means 55 lowers the vertical moving plate 46 to return to its original state.

In this way, one cycle of shadow mask mounting is completed. Thereafter, in the case of the same type, the above cycle is repeated, and if the type changes, as described above, the drive means 14A, 14B, 44A, 44B, 51A, 51B for changing the type are activated to match the type. The switch will change and the cycle described above will be repeated.

Note that in the above embodiment, the panel positioning device has three
Although the structure in which the base is arranged is shown, the present invention is not limited thereto, and may be in the form of a panel pin.

Depending on the position and accuracy status, two units in the longitudinal direction of the panel
The NO flannel positioning device alone is sufficient for positioning. Further, in this embodiment, a 4-pin panel in which the panel pins are aligned in a straight line has been described, but the present invention is not limited to this. For example, in the case of a 3-pin panel, it is possible to rearrange each part, omit blind pins, and suppress the frame presser at each location. Furthermore, although this embodiment has been described for the case of three types, it can be applied to even more types by changing the operating section. Furthermore, although this embodiment has been described as a stand-alone shadow mask mounting device, for example, by providing a rough guide for the panel, a lifting mechanism, etc. for the panel transport device, it is possible to operate the device from a state in which the positioning lever of the device is rotated. It is possible to shorten the cycle time.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, it is possible to obtain a shadow mask mounting device that has versatility that can be used for production of a wide variety of products, and therefore requires less equipment. In addition, it is possible to quickly change the product type, improving the operating rate of the equipment.

[Brief explanation of drawings]

Fig. 1 is a front view showing an embodiment of the shadow mask mounting device according to the present invention, Fig. 2 is a developed side view of Fig. 1, Fig. 3 is a sectional view of the panel, and Fig. 4 is a side view of the shadow mask. It is a diagram. 10...Positioning unit, 14A, 14B.
...driving means, 20...panel positioning device,
21... Positioning lever, 30... Mask positioning device, 31... Mask positioning pin, 40
...Holder device, 41...Claw, 43...
・Panel pin receiver, 4・IA, 44B... Drive means, 46... Vertical movement plate, 51A, 51B, 5
5.56... Drive means, 60... Mask vertical movement device, 61... Mask receiver, 66.67...
Driving means, M...shadow mask, Ml...mask spring, M...mask spring hole,
P...Panel, P...Panel pin. Figure 3 Figure 4

Claims (1)

[Claims] A panel positioning device that is placed on the outside of a panel placed at an approximate position, is movable toward the inside from the outside of the panel, and positions the panel based on a panel pin provided on the panel, and a panel positioning device is provided below the panel positioning device. a positioning unit comprising a mask positioning device that positions the shadow mask based on a spring hole provided in the shadow mask; and a positioning unit switching means that switches the position of the positioning unit to correspond to panels and shadow masks of different sizes. , a holder device to which a claw for depressing the spring of the shadow mask and a panel pin holder for positioning the panel pin of the panel are attached, and is provided to be movable up and down; A shadow mask mounting device comprising claw switching means and panel receiver switching means for switching the positions of the claws and panel receivers of a holder device, and a mask vertical movement device on which a shadow mask is placed and provided to be movable up and down.