JPH0414458B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an apparatus for assembling a panel and a shadow mask in a cathode ray tube.

[Technical background of the invention]

In the production of color cathode ray tubes, when forming a fluorescent surface on the inner surface of the panel, the panel and shadow mask are assembled and separated several times.

[Problems with background technology]

Conventionally, the panel and shadow mask assembly equipment used in the above-mentioned fluorescent surface manufacturing process was designed for a single type of panel and shadow mask, so it was difficult to produce multiple types of cathode ray tubes on the same production line. In this case, the assembly equipment becomes larger and
In some cases, it becomes difficult to use the existing production line due to space constraints, or it becomes necessary to sort panels and shadow masks by pipe type before introducing them into the assembly equipment. It has been difficult to perform mixed production of multiple types of tubes on existing production lines because it requires rework.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a panel and shadow mask assembly device that is compact and capable of introducing multi-tubular panels and shadow masks in a mixed state. The objective is to facilitate mixed production of multiple types of tubes using existing production lines.

[Summary of the invention]

The present invention comprises a plurality of panel pins protruding from at least two opposite locations on the inside of the panel, and a plurality of leaf spring-like holders provided on the outside of the shadow mask corresponding to the respective panel pins. by engaging the holes of
This device relates to an assembly device for assembling a panel and a shadow mask in a cathode ray tube, in which a plurality of blocks are arranged around the central axis of the base and advance and retreat from the inside toward each of the panel pins to come into contact with the panel pins, and the outside of each of these blocks. A panel positioning mechanism that can position multiple types of panels by a plurality of bevels that rise and engage with panel pins, and a plurality of reference pins that advance and retreat from the outside toward the holes of each of the holders and engage with the holes of the holders. and a plurality of holder pressers which can position a plurality of types of shadow masks by selectively moving each of the reference pins in one or more steps, and move back and forth toward each of the holders from the outside to press the holders. and a mask positioning/assembly mechanism capable of assembling a plurality of types of panels and shadow masks using a moving means for moving each holder presser and a plurality of stoppers that selectively change the advance and retreat positions of each holder presser by the moving means; A defective assembly removal mechanism;
Completed assembly carrying out mechanisms are arranged at equal intervals, and are movable above each of the mechanisms around the central axis of the base, and can be raised and lowered relative to each of the mechanisms. The present invention has a structure in which a panel holding mechanism is provided, thereby making it possible to downsize the assembly device and to allow a plurality of types of panels and shadow masks to be introduced in a mixed state.

[Embodiments of the invention]

Next, the apparatus of the present invention will be specifically explained based on an embodiment shown in the drawings.

FIGS. 1 and 2 show an assembly device for panels and shadow masks. This assembly device consists of a panel loading section 2, a mask loading section located every 90 degrees around the central axis of a horizontal base 1. 3. A defective assembly carry-out section 4 and a completed assembly carry-out section 5 are set.

In the panel loading section 2, there are third and fourth panels.
Two types of panels P ₁ , large and small as shown in the figure,
A panel positioning mechanism 6 for positioning the mask P ₂ is provided in the mask loading section 3 with two types of shadow masks M ₁ , large and small, as shown in FIGS. 6 and 7.
This shadow mask along with positioning _M2
The mask positioning/assembly mechanism 7 for assembling M ₁ and M ₂ to the panels P ₁ and P ₂ is connected to the defective assembly unloading section 4.
The base end of the defective assembly carrying out mechanism 8 for carrying out the defective assembly of the large panel P ₁ and shadow mask M ₁ and the defective assembly of the small panel P ₂ and shadow mask M ₂ is completed. The assembly carrying out section 5 has a completed assembly carrying out mechanism 9 for carrying out the completed assembly of the large panel P ₁ and the shadow mask M ₁ and the completed assembly of the small panel P ₂ and the shadow mask M ₂ . The base end portions are respectively disposed, and a panel carrying device 10 is provided outside the panel positioning mechanism 6 and the mask positioning/assembling mechanism 7, respectively.
and a mask carrying-in device 11 are provided.

Further, above the base 1, a horizontal arm 12 is provided.
is rotatably supported around the central axis of the base 1,
A panel holding mechanism 13 is supported at the bottom of both ends of this arm 12 so as to be able to rise and fall freely.
2 is driven clockwise in Figure 1 by a drive mechanism (not shown).
Each of the panel holding mechanisms 13 is rotated intermittently by 90 degrees, and each of the panel holding mechanisms 13 is moved up and down by a drive mechanism (not shown). It is designed to move above the mechanisms 6, 7, 8, and 9 and to move up and down relative to each mechanism.

The large and small panels P ₁ , P ₂ and shadow masks M ₁ , M ₂ assembled by this assembly device are as follows:
They are formed in similar shapes, respectively, and the panels P ₁ ,
A panel pin as shown in Fig. 5 protruding from the inside of two opposing short edges and one long edge of _P2 .
As shown in FIG. 8, PP ₁ , PP ₂ , PP ₃ and shadow masks M ₁ , M ₂ are fixed to the outside of two opposing short edges and one long edge of the frame portions F ₁ , F ₂ . Holes HH of plate spring-like holders H ₁ , H ₂ , H ₃ and
They are designed to be engaged and assembled.

The panel positioning mechanism 6 includes four panel seats 21, 2, as shown in FIGS. 9 to 14.
It has two block diagrams 22, two bevels 23, one plate 24 and one auxiliary seat 25.

The panel receivers 21 are provided at each corner of the substantially rectangular table 26, and the panels carried in by the panel carrying device 10 are
It supports the opening end corners of P ₁ and P ₂ ,
At this time, the large panel _P1 is roughly positioned in the longitudinal and lateral directions by the guide slope 28 of the approximately L-shaped protrusion 27 on the outside, and the large panel P1 is roughly positioned in the longitudinal and lateral directions. The guide slope 30 of the substantially truncated conical protrusion 29 allows approximate positioning of the small panel P ₂ in the longitudinal and lateral directions.

Further, the block 22 is connected to the table 26.
are provided inside two opposing short edges of the table 26, each is attached to a slider 32 via a support member 31, and by engaging the slider 32 with a slider guide 33 on the table 26, the longitudinal direction of the table 26 can be adjusted. It is configured to be movable in the two directions.
The two sliders 32 are connected by a link mechanism 34, and this link mechanism 34 is connected to an air cylinder 35.
By engaging the piston rod of
They are driven by two air cylinders 35 to advance and retreat synchronously with respect to the panel pins PP ₁ and PP ₂ on the short edges of the panels P ₁ and P ₂ supported by the panel seats 21, respectively. The panels P ₁ and P ₂ are positioned in the longitudinal direction.

Moreover, the bevels 23 each have a slider 3
By engaging this slider 36 with a slider 37 outside the support member 31, the table 20 is moved in the longitudinal direction together with the block 22, and the outside of the block 22 is moved up and down. Further, a guide rail 3 horizontal to the slider 6
8, and by engaging the piston rod of the air cylinder 39 with this guide rail 38 via a roller (not shown), the air cylinder 39 can be driven in the vertical direction as well.
2 advances and contacts the panel pins PP ₁ , PP ₂ of the panels P ₁ , P ₂ , and then by raising the bevel 23 , the approximately V-shaped recess 40 of the bevel 23 is connected to the panel pin PP ₁ with the short edge. , engage and lift PP ₂ ,
This allows the panel pins PP ₁ and PP ₂ to be positioned in the height direction, as well as the panels P ₁ and P ₂ to be positioned in the lateral direction.

Further, the plate 24 is connected to the table 26.
The first slider 41 is connected to the first slider guide 43 on the outside of the second slider 42, and is attached to the first slider 41. slider 42
by engaging the second slider guide 44 on the table 26, the vertical direction and the table 26
By connecting the second slider 42 with one of the sliders 32 of the block 22 by a link mechanism 45, the length of the panels P ₁ and P ₂ is moved in synchronization with the block 22. Further, a horizontal guide rail 46 is attached to the _first slider 41, and the piston rod of the air cylinder 47 is connected to the guide rail 46 via a roller (not shown). By engaging, the plate 24 is also driven in the vertical direction, and by advancing the plate 24 below the panel pin PP ₃ and then raising it, the panel pin on the long edge is moved.
Lift up PP ₃ , this will remove the panel pin PP ₃
The positioning is performed in the height direction.

Further, the auxiliary catch seat 25 is connected to the plate 26.
A spring 49 is mounted on the base plate 48 below the
A recess 50 formed in the other long edge of the plate 26 is supported in an upwardly biased state through the
The panels P ₁ and P ₂ are brought into contact with the end faces of the other long edges of the panels P ₁ and P ₂ with a weak pressure that does not lift the panels P ₁ and P ₂ . and supports the panels P ₁ and P ₂ auxiliary when they are lifted by the plate 24, and after the panels P ₁ and P ₂ are lifted, the air cylinder 51
It is designed to be fixed by a stopper 52 driven by.

As shown in FIGS. 15 to 20, the mask positioning/assembling mechanism 7 includes four mask seats 61, six positioning rollers 62, three reference pins 63, four fixing members 64, and three holders. It has a presser foot 65.

The mask seat 61 is mounted on a substantially rectangular table 66 as shown in FIGS. 15 and 16.
A shadow mask M ₁ , which is provided at each corner of the screen and carried in by the mask carrying device 11,
It supports frame parts F ₁ and F ₂ of M ₂ ,
At that time, the approximately truncated conical protrusion 67 on the inside upper part
The guide slopes allow approximate positioning of the small shadow mask _M2 in the longitudinal and lateral directions.

Further, the positioning roller 62 is activated when the large shadow mask M ₁ is supported on the mask receiving seat 61 to roughly position the large shadow mask M ₁ in the longitudinal and lateral directions. Two of them are attached to a U-shaped support member 69 provided on one long edge of the table 66, and the other two are attached to shafts 70 (only one is shown) on both sides of the support member 69. ), and furthermore, interlocking pieces 72 are connected between each of these arms 71 and the support member 69, respectively.
By rotating one arm 71 (the right side in FIG. 15) about a shaft 70 with an air cylinder 73, the roller 62 attached to this one arm 71 can be used as a shadow mask. At the same time, the two rollers 62 attached to the support member 69 move back and forth to one _of the long edges of the shadow mask _M1 , and are further attached to the other arm 71. The roller 62 advances and retreats to the corner of the other short edge of the shadow mask _M1 , and the remaining two rollers 62 are attached to a U-shaped support member on a slider 74 provided on the other long edge of the table 66. 75, the slider 74 is engaged with a slider guide 76 on the table 66, and
It is pivotally connected to the F-shaped arm 77 via a connecting piece 78, and by rotating this arm 77 about a shaft 80 with an emitter cylinder 79, the supporting member 7
Two rollers 62 attached to the shadow mask M 5 move toward and away from the other long edge of the shadow mask M ₁ . Note that the support member 69 to which the two rollers 62 are attached to one of the long edges is moved in the lateral direction of the table 66 so that it is operated synchronously with the other two arms 71 by one air cylinder 73. It is designed to only move.

Further, the reference pin 63 is connected to the table 66.
are provided on two opposing short edges and one long edge of the Second
The slider 82 is engaged with the slider guide 83 on the table 66, and the first slider 81 is further engaged with the slider guide 83 on the table 66.
and the second slider 82 and the second slider 8
2 and the table 66, first and second air cylinders 84 each forming a multi-stage moving means,
85 is provided, the first air cylinder 84
As a result, the first slider 81 becomes the second slider 8.
At the same time, the second slider 82 is moved forward and backward along the slider guide 83 by the second air cylinder 85, thereby causing the two opposing short edge reference pins 63 and one of the The reference pins 63 on the long edges can advance and retreat to the second stage in the longitudinal direction of the table ₆₆ and the transverse direction of the table ₆₆ , respectively. The mask receiving seat 61 is moved in two steps toward the center of the table 66 from the illustrated state.
At the top, each roller 62 or mask receiving seat 61
The holes in each holder H ₁ , H ₂ , H ₃ of the shadow mask M ₁ or M ₂ approximately positioned by the protrusion 67 of
The tip of each reference pin 63 engages with HH, and the shadow masks M ₁ and M ₂ are positioned in the longitudinal and lateral directions, and the shadow masks M ₁ and M ₂ are positioned in the height direction. ing.

Further, the fixing members 64 are each attached to a lever 36 inside the mask receiving seat 61, and are positioned by the reference pin 63 by driving this lever 36 by a driving means (not shown). As well as advancing and retreating inside the long edges of the frames F ₁ and F ₂ of the shadow masks M ₁ and M ₂ ,
After each fixing member 64 contacts the frame F ₁ , F ₂ , each lever 36 is fixed by a stopper (not shown), thereby fixing the shadow masks M ₁ , M ₂ in the positioned state.

Further, as shown in FIGS. 17 to 19, the holder presser 65 is provided close to each of the reference pins 63 on two opposing short edges and one long edge of the table 66, Each is attached to a slider 87, and this slider 87 is engaged with a slider guide 88 on the table 66. This block 8 is connected via a connecting piece 90.
9 is rotated by a rotary air cylinder 91 as a moving means provided below the table 66, each holder presser 65 moves forward and backward in synchronization.
As a result, on the mask receiving seat 61,
While being positioned by each of the reference pins 63,
Shadow mask fixed with each fixing member 64 mentioned above
_{The holders H 1 , H 2 , and} H ₃ of M ₁ and M 2 are pushed from the outside.

First to third rollers 92, 93, 94 are provided on the outer periphery of the block 89, and first and second fixed stoppers 9 for the first roller 92 are provided on the table 66.
5, 96, a first movable stopper 97 for the first roller 92, the second and third rollers 9;
A second movable stop 98 for 3, 94 is provided, these stops 95, 96, 97, 98
As shown in FIG. 20, the movable stoppers 97 and 98 are adapted to retract above the table 66 by means of air cylinders 99 and 100 provided at the bottom of the table 66, respectively, and are adapted to move above the first roller. 92 and the first fixed stopper 95, each holder presser 65 is moved to the retracted position, that is, the stop ring before each holder presser 65 presses the holders H ₁ , H ₂ , H ₃ of the shadow masks M ₁ , M ₂ . By the engagement of the first roller 92 and the second fixed stopper 96, the forward position of each holder presser 65 with respect to the holders H ₁ , H ₂ , H ₃ of the small shadow mask M ₂ , that is, each holder presser Each holder presser 65 regulates the stopping position when the holders H ₁ , H ₂ , H ₃ of the small shadow mask M ₂ are pressed.
5 does not hit the frame _F2 of the small shadow mask _M2 , and the first roller 92 and the first
The holder of the large shadow mask _M1 of each holder presser foot 65 is activated by the engagement of the movable stopper 97.
The forward position relative to H ₁ , H ₂ , and H ₃ , that is, each holder presser 65 is the holder of the large shadow mask M ₁
Each holder presser 65 functions as a large shadow mask by regulating the stopping position when H ₁ , H ₂ , and H ₃ are pressed.
Avoid hitting frame F ₁ of M ₁ , and
Each of the above holder presses 65 is a small shadow mask.
After pressing the holders H ₁ , H ₂ , H ₃ of M ₂ , that is, the first roller 92 and the second fixed stopper 96
When retracting each holder presser foot 65 slightly after it is engaged (panel pin of small panel P ₂
When engaging the holes HH of the holders H ₁ , H ₂ , H ₃ of the small shadow mask M ₂ with PP ₁ , PP ₂ , PP ₃ ), the second roller 93 and the second movable stopper 98 engage with each other. to prevent each holder presser 65 from retreating more than necessary (to prevent each holder presser 65 from hitting the small panel P ₂ ), and to prevent each holder presser 65 from touching the holder of the large shadow mask M ₁ .
After pressing H ₁ , H ₂ , and H ₃ , that is, after the first roller 92 and the first movable stopper 97 engage, when each holder presser 65 is slightly retreated (the panel pin of the large panel P ₁ PP ₁ , PP ₂ , PP ₃ with large shadow mask M ₁ holder H ₁ , H ₂ , H ₃
when engaging the hole HH of the third roller 94
By the engagement of the second movable stopper 96, each holder presser 65 is prevented from retreating more than necessary (each holder presser 65 is prevented from hitting the large panel _P1 ).

Next, the overall operation will be explained.

The large panel P ₁ and the shadow mask M ₁ and the small panel P ₂ and the shadow mask M ₂ are mixed in pairs, and the panels P ₁ and P ₂ are transferred to the panel positioning mechanism 6 via the panel carrying device 10.
, the shadow masks M ₁ and M ₂ are installed in the mask carrying device 1.
1 to the mask positioning and assembly mechanism 7, respectively, the panels _P1 , _P2 and the shadow masks _M1 , _M2 are positioned in the respective mechanisms 6 and 7, respectively.

That is, the panels P ₁ and P ₂ are connected to the panel receiver 21
At the same time, the large panel P ₁ is roughly positioned by the projection 27 and the small panel P ₂ is roughly positioned by the projection 29 in the longitudinal and lateral directions. By means of the air cylinder 35, the pair of blocks 22 advance to the panel pins PP ₁ and PP ₂ on the short edges of the panels P ₁ and P ₂ to position them in the longitudinal direction, and the pair of bevels 23 and the plate 24 moves below the panel pins PP ₁ and PP ₂ on the short edge and the panel pin PP ₃ on the long edge, and then the pair of bevels 23 are raised by the air cylinder 39 and the panel pins on the short edge are moved downward.
PP ₁ and PP ₂ are positioned in the lateral and height directions, and then the plate 24 is raised by the air cylinder 41 to position the panel pin PP ₃ on the long edge in the height direction. The auxiliary catch 25 is raised by the spring 49 and the panel
The long edges of P ₁ and P ₂ that are not supported by the panel pin PP ₃ are supported, and then the stopper 52 is moved forward by the air cylinder 51 to fix the auxiliary catch 25, and thereby the panels P ₁ and P ₂ are Its panel pins PP ₁ , PP ₂ ,
Completely positioned and fixed based on PP ₃ .

Furthermore, when the shadow masks M ₁ and M ₂ are supported on the mask seat 61, the shadow masks M 1 and M 2 become small shadow masks.
M ₂ is approximately positioned in the longitudinal and lateral directions by the protrusion 67 of the master seat 61, and in the case of a large shadow mask M ₂ , the air cylinders 73 and 79 are activated to move the roller 62. Moving forward, the large shadow mask M ₂ is moved forward by this roller 62.
Approximate positioning in the longitudinal and lateral directions is carried out by means of , and then, in the case of a large-sized shadow mask M ₁ , by one of the air cylinders 34 and 35,
In the case of a small shadow mask _M2 , the reference pin 63 is set to 1 by both the air cylinders 34 and 35.
Advance one or two steps and move the holders H ₁ , H ₂ , H ₃
The shadow masks M ₁ , M ₂ are completely positioned with reference to the holes HH of the holders H ₁ , H ₂ , H ₃ , and then the fixing member 64 moves forward to remove the shadow masks M ₁ , M 2 . _{2 ,} and in this state, _the fixing member 64
is fixed, and the shadow masks M ₁ and M ₂ are fixed in a completely positioned state.

Furthermore, in the mask positioning/assembly mechanism 7, after the shadow masks M ₁ and M ₂ are positioned and fixed, the shadow masks M ₁ and M ₂ are attached to the panel P ₁ ,
Set it so that it can be assembled into _P2 .

That is, in the case of a large-sized shadow mask _M1 , the first movable stopper 97 is raised by the air cylinder 99, and in the case of a small-sized shadow mask _M2 , the first movable stopper 97 is lowered. , the block 89 is rotated clockwise in FIG. 17 by the rotary air cylinder 91, and the first roller 92 is rotated until it comes into contact with the first movable stopper 97 or the second fixed stopper 96. , the holder presser 65 holds the holders H ₁ , H ₂ , H ₃ of the shadow masks M ₁ , M ₂ to the frame F ₁ ,
_{The panels P 1 and P 2 are pushed inward to the extent that they do not come into contact with the holders H 1 and F 2 , thereby allowing the panels P 1 and P 2 to be attached} to the holders H ₁ and _H2 , _H3
Then, remove the reference pin 63 from the hole HH of the holder H ₁ , H ₂ , H ₃ by retracting it using one or both of the air cylinders 84 and 85, and in the case of a large shadow mask M _1. The roller ₆₂ is moved backward by the air cylinders ₇₃ and 79, and thereby _the reference pin 65 _is
Then, the roller 62 should not become an obstacle.

In addition, the panel holding mechanism 13 is the panel P ₁ ,
When P ₂ is positioned and fixed by the panel positioning mechanism 6, it descends from above to hold the panels P ₁ and P ₂ , and then rises, and by the rotation of the arm 12,
It moves above the mask positioning/assembly mechanism 7, and when the shadow masks M ₁ and M ₂ are set in a state where they can be assembled by the mask positioning/assembly mechanism 7, it descends from above and the shadow masks
A pair of panels P ₁ and P ₂ is applied to M ₁ and M ₂ .

Then, when the panels P 1 and P 2 are fitted onto the shadow masks M ₁ and M ₂ , the mask positioning/assembly mechanism 7 assembles the shadow masks _{M 1 and M 2 to} the panels P ₁ and P ₂ .

That is, when the panels P ₁ and P ₂ are lowered, the second movable stopper 96 is moved by the air cylinder 100.
rises, and then the rotary air cylinder 91
This causes the block 89 to rotate counterclockwise in FIG. 17, causing the third roller 94 to rotate in the case of a large shadow mask _M1 and _{the second} roller in the case of a small shadow mask M2. 93 is
The holder presser 65 rotates until it comes into contact with the second movable stopper 98 and retreats outward to the extent that it does not hit the panels P ₁ and P ₂ .
H ₁ , H ₂ , H ₃ return to their original states due to their spring properties, and holes HH of holders H ₁ , H ₂ , H ₃ are connected to panels P ₁ , P ₂
engages panel pins PP ₁ , PP ₂ , PP ₃ of
The detectors (not shown) are located in holes HH of holders H ₁ , H ₂ , and H ₃ .
Then _{, the} fixing member ₆₄
is retreated from the inside of the frames F ₁ , F ₂ of the shadow masks M ₁ , M ₂ , thereby freeing the shadow masks M ₁ , M ₂ assembled to the panels P ₁ , P ₂ .

The panel holding mechanism 13 then holds the panels P ₁ ,
When shadow masks M ₁ and M ₂ are assembled to P ₂ ,
As the arm 12 rotates, it moves sequentially to the defective assembly carry-out mechanism 8 and the completed assembly carry-out mechanism 9, and the assembly of panels P ₁ and P ₂ and shadow masks M ₁ and M ₂ is defective. In the _{case of}
Then, when the panels _{P 1 and} P ₂ and the shadow masks M _{1 and} M ₂ are completely assembled, the completed assembly carrying out mechanism 9
Go down and cover panels P ₁ and P ₂ with shadow masks M ₁ and M ₂
It is designed to release and rise again.

Note that in this embodiment, the panel holding mechanism 13
, each loading section 2, 3 and each loading section 4, 5 of the base 1
In this case, half of the number of the number of the number of the number of the number of the number of the number of the number of the number of the number of the number of the number of the number of the number of parts are provided, that is, two, but the number may be set to 4.

In addition, in this embodiment, the panels P ₁ and P ₂ are positioned based on their three panel pins PP ₁ , PP ₂ , and PP ₃ , and the shadow masks M ₁ and M ₂
Since the holes HH of the three holders H ₁ , H ₂ , and H ₃ are used as the reference for positioning, the occurrence of assembly defects is reduced, and the products of the panels P ₁ , P ₂ and the shadow masks M ₁ , M ₂ Even if there are some errors in dimensions, assembly is possible and is extremely effective.

〔Effect of the invention〕

As described above, according to the present invention, multiple types of panels and shadow masks can be positioned and assembled using one panel positioning mechanism and one mask positioning/assembly mechanism. There is no need to separate panels and shadow masks by type, and there is no need to increase the size of the assembly equipment. Therefore, the existing production line for a single type of pipe can be converted into a production line for mixed production of multiple types of pipes. When remodeling, the installation space for the assembly device does not change, and there is no need to modify the line before the assembly device, making it easy to remodel the production line.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a plan view of an assembly device, Fig. 2 is a front view thereof, and Figs. 3 and 4 show a large panel and a small panel. A is a cross-sectional view, B is a vertical cross-sectional view, FIG. 5 is a vertical cross-sectional view showing the panel pins, and FIGS. 6 and 7 are a large-sized shadow mask and a small-sized shadow mask, respectively. A plan view, B is a longitudinal sectional view, FIG. 8 is a side view showing the holder, FIG. 9 is a plan view of the panel positioning mechanism, FIGS. 10 to 14 are front views or side views of the respective main parts, Fig. 15 is a plan view showing a part of the mask positioning/assembly mechanism, Fig. 16 is a rear view thereof, Fig. 17 is a plan view showing a part of the mask positioning/assembly mechanism, and Fig. 18 is its rear view. 19 and 20 are front views of the main parts thereof. P ₁ , P ₂ ... Panel, PP ₁ , PP ₂ , PP ₃ ... Panel pin, M ₁ , M ₂ ... Shadow mask, H ₁ , H ₂ ,
H ₃ ...Holder, HH...Hole, 1...Base, 6...
…Panel positioning mechanism, 7…Mask positioning/
Assembly mechanism, 8...defective assembly carrying out mechanism, 9...completed assembly carrying out mechanism, 13...panel holding mechanism, 2
2...Block, 23...Bevel, 63...Reference pin, 65...Holder presser, 84, 85...First and second air cylinders constituting multi-stage moving means, 91...Rotary as moving means Air cylinder, 95, 96...Fixed stopper, 97,
98...Movable stopper.

Claims (1)

[Scope of Claims] 1. A plurality of types of panels and a shadow mask, a plurality of panel pins protruding from at least two opposite locations on the inside of the panel, and a plurality of leaf springs provided on the outside of the shadow mask corresponding to each of the panel pins. It is assembled by engaging holes in a shaped holder, and a plurality of blocks are arranged around the central axis of the base and advance and retreat from the inside toward each of the panel pins, and come into contact with the panel pins. A panel positioning mechanism that can position multiple types of panels with multiple bevels that rise on the outside of each block and engage with panel pins, and a panel positioning mechanism that moves toward and back from the outside toward the holes in each of the holders and engages with the holes in the holders. A plurality of reference pins and a multi-step moving means for selectively moving each of the reference pins in one step or a plurality of steps are capable of positioning a plurality of types of shadow masks, and move forward and backward toward each of the holders from the outside to press the holders. A plurality of holder presses, a moving means for moving each of the holder presses, and a plurality of stoppers for selectively varying the forward and backward positions of each holder press by the moving means,
A mask positioning/assembly mechanism capable of assembling multiple types of panels and shadow masks, a mechanism for discharging defective assemblies, and a mechanism for discharging completed assemblies are arranged at equal intervals around the central axis of the base. An apparatus for assembling a panel and a shadow mask in a cathode ray tube, characterized in that a panel holding mechanism is provided that is movable above each of the mechanisms about the central axis and that can be raised and lowered relative to each of the mechanisms.