JPS63128528A - Assimbling/disasembling device of shadow mask for cathode-ray tube - Google Patents

Abstract

PURPOSE:To make it possible to assemble and disassemble a shadow mask easily by one person, and to prevent a damage or deformation of a panel or a shadow mask, by holding a mask frame positioned to mask guides while linking mask clamps of a main body frame. CONSTITUTION:Plural panel guides 3 to position a panel P abutting to an insulator of the panel P, and plural mask guides 4 to position a main frame F abutting to the main frame F are provided at a frame main body 2. And as well as plural mask clamps 8 to set the mask frame F positioned by the mask guides 4 are provided, a mask clamp linking device 9 to link the plural mask clamps 8, and a mask clamp operating lever 12 to operate the mask setter linking device 9 are arranged. And moreover, while plural holder pawls to abut to mask holders H and to squeeze them to the mask frame side are provided, a holder pawl linking device 14 to link the plural holder pawls 13, and a holder pawl operating lever 18 to operate the holder pawl linking device 14 are arranged. In such a composition, the manual assembling and disassembling of a shadow mask can be carried out easily.

Description

[Detailed Description of the Invention] (Objective of the Invention) (Industrial Application Field) The present invention relates to a shadow mask attachment/detachment device for a cathode ray tube. Concerning assembly and separation equipment.

- (Prior Art) In the cathode ray tube manufacturing process, particularly in the process of forming a phosphor screen on the inner surface of the panel, the panel and shadow mask are assembled and separated several times. This panel and shadow mask are
As shown in FIG. 3, panel bins P in the shape of a truncated cone protrude from predetermined positions inside the panel P, in this case at the four corner positions.
P is assembled by engaging the circular holder holes 1 of the leaf spring-like mask holder H provided at the four outer corners of the mask frame F supporting the shadow mask M.

This assembly work can be performed automatically by using an automatic assembly device such as that shown in Japanese Utility Model Publication No. 58-10283. In the case of small cathode ray tubes, etc., they are sometimes assembled and separated manually without being placed on an automatic production line.

To perform this work manually, in the case of assembly, as shown in FIG. By inserting and releasing the mask holder H, the panel bin PP is engaged in the holder hole HH of the mask holder H, and the panel P and the mask M are assembled.

In addition, in the case of separation, the mask frame F is supported with the fingers and the tip of the mask holder H is squeezed with the fingers, the holder hole HH is removed from the panel bin PP, and the mask M is separated from the panel P in the same manner as described above.

In this case, a predetermined engagement force is required to engage the mask holder H with the panel bin PP, and the mask holder H
is set to a spring force commensurate with the engaged state.

(Problem to be Solved by the Invention) However, if the engagement force of the mask holder H with the panel bin P is strong, not only is the assembly and separation work described above extremely difficult, but the panel P may be damaged. There are other problems. In addition, when assembling or separating one worker, it is not possible to squeeze two or more mask holders H at a time, and if only two mask holders H are squeezed during assembly or separation, the balance with the remaining mask holders H will be lost. There was a problem in that an uneven load was applied to the mask frame F, causing deformation of the mask M.

The present invention has been made in view of the above-mentioned problems, and provides a shadow mask for a cathode ray tube that can be easily assembled and separated by hand, and can be assembled and separated without damaging the panel, shadow mask, etc. The purpose of this invention is to provide an attachment/detachment device.

(Structure of the Invention) (Means for Solving the Problems) The present invention comprises a panel bin protruding from the inside of the panel of a cathode ray tube and a leaf spring-like mask holder provided outside the mask frame of the shadow mask. It is an attachment/detachment device that engages and detaches, and has a grip section on the main body frame to make it portable, and the main body frame includes a plurality of panel guides and a mask frame that are positioned by abutting against the edge of the panel. A plurality of mask guides are provided for positioning by coming into contact with the mask guides, a plurality of mask holders are provided for holding the mask frame positioned on the mask guides, a mask holder interlocking mechanism for interlocking the plurality of mask holders, and a mask holder interlocking mechanism for interlocking the plurality of mask holders. A mask holding operation part that operates the mechanism is provided, and a plurality of holder claws that contact the mask holder and narrow the mask holder toward the mask frame and the mask side are provided, and a holder claw interlocking mechanism that interlocks the plurality of holder claws; A holder claw operating section is provided for operating this holder claw interlocking mechanism.

(Function) In the present invention, by operating the mask holder operation section with the mask frame positioned on the main body frame, all the mask holders are interlocked to hold the mask frame through the mask holder interlocking mechanism, and this mask holder You can carry the shadow mask together with the main body frame when holding it. Further, by operating the holder claw operating section with the main body frame holding the shadow mask positioned on the panel, all the holder claws are interlocked via the holder claw interlocking mechanism to attach and detach the mask holder to and from the panel bin.

(Example) Hereinafter, the configuration of an example of the present invention will be described with reference to the drawings.

1 and 2, reference numeral 1 denotes a shadow mask attaching/detaching device, which is equipped with a plate-shaped main body frame 2 made of a transparent material, and the outer edge of a panel P is attached to each of the four edges of the upper surface of this main body frame 2. An abbreviated panel guide 3 is provided that abuts on the mask frame F for positioning, and mask guides 4 are arranged near the four corners of the upper surface of the main body frame 2 for abutment and positioning on the inner peripheral edge of the mask frame F. ing.

The mask guide 4 is formed in a cylindrical shape with a conical portion at the upper end, is provided with a mask base 5 having a larger diameter than the mask guide 4, and is placed on the mask base 5,
A sprocket 7 is attached to a rotary shaft 6 which projects from the lower surface of the mask guide 4 and rotatably passes through the mask base 5 and main body frame 2, and is rotatable integrally with the sprocket 7.

Further, on the side surface of each panel guide 4, a roller-shaped mask presser 8 that holds the mask frame F positioned by the mask guide 4 is rotatably supported.

The plurality of mask holders 8 are interlocked by a mask holder interlocking mechanism 9, and this mask holder interlocking mechanism 9 includes each sprocket 7 that rotates integrally with the mask guide 4, and a frame attached to each sprocket 7 to rotate. One end of this chain 10 is connected to a spring 11 stretched between it and the main body frame 2, and the other end of the chain 10 is rotatably provided on the main body frame 2. The end of the chain 1 is connected to a lever 12 that protrudes from the edge of the main body frame 2, and when the mask frame F is held, the chain 1 is rotated from the solid line position to the imaginary line position in FIG.゜ and each mask guide 4 through each sprocket 7, all the mask pressers 8 rotate counterclockwise in FIG. By rotating the chain 12 from the imaginary line position to the solid line position, the chain 10 is pulled back by the spring 11, and the mask guide 4 and the mask holder 8 are moved to the first position.
All the mask holders 8 are removed from the mask frame F by rotating clockwise in the figure. Note that the lever 12 is configured as a mask presser operation section that operates the mask presser interlocking mechanism 9.

Claw grooves 2a are formed along diagonal lines in the four corners of the main body frame 2.
A holder claw 13 is arranged in this claw groove 28 with the tip of the claw protruding from the upper surface of the main body frame 2. Each holder claw 13 is connected to a holder claw interlocking mechanism 14 arranged on the lower surface of the main body frame 2. Operate. This holder claw interlocking mechanism 14 has a binion gear 15 at the center of the back surface of the main body frame 2.
is rotatably provided, and one end of each rack 16 that meshes with the pinion and gear 15 and the lower end of each holder claw 13 are connected by a connecting rod 17. A handle 18 is connected to the pinion gear 15, and the handle 18 is connected to the pinion gear 15. 18 passes through a guide groove 20 of a guide plate 19 attached to the edge of the main body frame 2, and a holder aperture groove 2 at one end of the guide groove 20.
1 and the center holder release groove 22 for positioning, and is moved to the mask attachment/detachment groove 23 at the other end.

Then, when tightening the mask holder H, the handle 18
By rotating the pinion gear 15 to the position of the holder throttle groove part 21 of the guide groove 20, the binion gear 15 rotates in the clockwise direction in FIG. All holder claws 1
3 moves inward to squeeze the mask holder H, and
When the mask holder H is released, the handle 18 is moved to the holder release groove 22 or the mask attachment/detachment groove 23 of the guide groove 20.
By rotating the pinion gear 15 to the position shown in FIG. 1, the pinion gear 15 rotates counterclockwise in FIG. Filtering is canceled. Note that the handle 18 is configured as a holder claw operating section that operates the holder claw interlocking mechanism 14.

Moreover, grips 24 for carrying the main body frame 2 are provided at both end edges of the main body frame 2, respectively.

As shown in FIG. 3, the panel P and the shadow mask M are connected by truncated cone-shaped panel pins PP protruding from the four inner corners of the panel P, and from the four outer corners of the mask frame F that supports the shadow mask M. The circular holder hole of the leaf spring-shaped mask holder H provided in the position! 111 to be assembled.

Then, when assembling the shadow mask M onto the panel P, the mask frame F is placed on the upper surface of the main body frame 2 along the mask guide 4, as shown in FIG. 2(2). The mounted mask frame F is positioned in the horizontal direction by the mask guide 4, and is also positioned in the height direction with respect to the main body frame 2 by the mask base 5. At this time, the lever 12 is in the position shown by the solid line in FIG.
is located in the mask attachment/detachment groove portion 23 of the guide groove 20, and is located at the position where each holder claw 13 has moved furthest outward.

Then, the lever 12 is rotated from the solid line position in FIG. 1 to the imaginary line position, and as shown in FIG. 2 (c), all mask pressers 8 are rotated onto the mask frame F via the chain 10, A mask frame F is held between this mask presser 8 and the mask base 5.

In addition, the handle 18 is attached to the holder aperture groove portion 2 of the guide groove 20.
1, all the holder claws 13 are moved inward as shown in FIG. 2, and the tip of each holder claw 13 narrows the mask holder H toward the mask frame F side.

Next, holding each grip 24 of the main body frame 2, as shown in FIG. 2(b), lower the main body frame 2 onto the panel P with the upper and lower surfaces reversed and the edges facing upward.

When the main body frame 2 is lowered, the panel guide 3 comes into contact with the peripheral edge of the panel P, and the panel P and the main frame 2 are positioned.

Then, the handle 18 is rotated to the position of the holder release groove 22 of the guide groove 20, and as in the second case, all the holder claws 13 are moved outward to release the narrowing of the mask holder H. The mask holder H whose narrowing is released moves inward of the panel P due to elasticity, and the holder hole old 1 fits into the panel pin PP of the panel P.

Further, the lever 12 is rotated from the imaginary line position in FIG. 1 to the solid line position, and the mask presser 8 is retracted and rotated as shown in FIG. 2 to release the holding of the mask frame F.

Next, hold the grip 24 of the main body frame 2 and lift the main body frame 2 away from the panel P and the shadow mask M, as shown in FIG. 2, to complete the assembly.

In addition, when separating the shadow mask M from the panel P, the assembly is completed in the above assembly state (the lever 12 is in the solid line position in FIG. 1, the handle 18 is in the guide position), as shown in FIG. Lower the main body frame 2 (fitted into the holder release groove 22 of the groove 20) onto the panel P,
The panel guide 3 is positioned by bringing it into contact with the edge of the panel P. In this positioning state, the mask guide 4 fits into the inner peripheral edge of the mask frame F, the mask base 5 contacts or faces the mask frame F, and the holder claws 1
3 is inserted between the panel P and the mask holder H.

Then, as shown in FIG. 2 (f), by rotating the lever 12, all the mask holders 8 are rotated onto the mask frame 61 surface, and the mask frame F is moved between the mask holders 8 and the mask base 5. At the same time, the handle 18 is rotated to move all the holder claws 13 inward, and the tip of each holder claw 13 narrows the tip side of the mask holder H toward the mask frame F side, and the mask holder H holder hole 11
Remove 8 from the panel door panel bin PP.

Next, the shadow mask M held by the mask presser 8 is separated from the panel P by holding the grip 24 of the main body frame 2 and lifting it.

Then, the handle 18 is rotated into the holder attachment/detachment groove 23 of the guide groove 20, and all the holder claws 13 are moved outward to release the mask holder H, as shown in FIG. At the same time, the lever 12 is rotated, and the mask presser 8 is retracted and rotated to release the holding of the mask frame F, as shown in FIG. 2 (2).

Then, the mask frame F is lifted up and separated from the main body frame 2, and the separation is completed.

As described above, by using the attachment/detachment device 1, the shadow mask M can be easily detached by one person, and the panel P and the shadow mask M are not damaged or deformed during attachment/detachment. .

In the above embodiment, the panel pins PP and the mask holder H are provided at the four corners of the panel P and the mask frame F. The panel bins PP and the mask holders H may be arranged in four or less or four or more locations in combination, and the arrangement and number of panel bins PP and mask holders H are not limited.

〔Effect of the invention〕

According to the present invention, by interlocking each mask holder of the main body frame and holding the mask frame positioned on the mask guide, the shadow mask can be carried together with the main body frame, and each of the main body frames The mask holder of the mask frame held by interlocking holder claws can be attached and detached from the panel pins, allowing one person to easily attach and detach the shadow mask and use it as a panel or shadow mask! 11! and does not cause deformation.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the shadow mask attachment/detachment device for a cathode ray tube according to the present invention, FIG. 2 is a partial sectional view illustrating the attachment/detachment procedure, and FIG. 3 is an exploded perspective view of the panel and shadow mask. FIG. 4 is a partial sectional view illustrating a conventional operation for attaching and detaching a panel and a shadow mask. 2. Main body frame, 3. Panel guide, 4. Mask guide, 8. Mask holder, 9. Mask holder interlocking mechanism, 12. Mask holder operation section, 13. Holder claw, 1
4...Holder claw interlocking mechanism, 18...Holder claw operation section, 2
4. Grip, F. Mask frame, H. Mask holder, M. Shadow mask, P. Panel, PP.
・Bunnel pin.

Claims (1)

[Claims] (1) An attachment/detachment device that engages and detaches a panel pin protruding from the inside of a cathode ray tube panel and a leaf spring-like mask holder provided outside a mask frame of a shadow mask, and includes a grip portion. A portable main body frame is provided, and the main body frame includes a plurality of panel guides that abut against the edge of the panel for positioning, a plurality of mask guides that abut against the mask frame for positioning, and a plurality of mask guides that abut against and position the mask frame. A plurality of mask holders that hold the positioned mask frame, a mask holder interlocking mechanism that interlocks the plurality of mask holders, a mask holder operating section that operates the mask holder interlocking mechanism, and a mask holder that comes into contact with the mask holder to operate the mask holder. A shadow mask attaching/detaching device for a cathode ray tube characterized in that a plurality of holder claws that narrow to the mask frame side, a holder claw interlocking mechanism for interlocking the plurality of holder claws, and a holder claw operating section for operating the holder claw interlocking mechanism are provided. Device.