JPH0222975B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a panel positioning device used in a combination machine for combining a cathode ray tube panel and a shadow mask.

The fluorescent surface on the inner surface of a color cathode ray tube panel consists of stripes of phosphor in three colors: blue, edge, and red, and black light-absorbing stripes that fill in the spaces between them. In this method, the panel and shadow mask are combined and separated for each stripe forming process.

In this case, the combination of the panel and shadow mask is
By fitting the engagement holes of three or four leaf spring-shaped holders fixed to the outer surface of the shadow mask to three or four panel pins protruding from the inner surface of the panel. It is done.

When combining a panel and a shadow mask using a combination machine, it is necessary to position the panel based on its panel pins, but since the position of the panel pins differs depending on the type of cathode ray tube, conventional The panel positioning device of the combination machine could not position the panels of multiple types of cathode ray tubes, and could not support mixed production of multiple types of cathode ray tubes.

The present invention has been devised in view of these points, and provides a panel positioning device that can position the panels of a plurality of types of cathode ray tubes.

Next, embodiments of the present invention will be described based on the drawings.

Figure 1 shows the panel and shadow mask combined machine 1.
This combination machine 1 has a panel loading section 3, a first
A mask inflow section 4, a second mask carry-in section 5, and a second mask carry-out section 6 are set.

A panel positioning device 7 according to the present invention is disposed in the panel loading section 3, and a panel loading device 8 is provided outside of the panel positioning device 7, and a panel loading device 8 is provided outside the panel positioning device 7, and a panel loading device 8 is provided outside the panel positioning device 7. First and second mask positioning devices 9, 10 are disposed in the sections 4, 5, and the first and second mask positioning devices 9, 10
The first and second mask loading devices 11 are located outside of the
12 is provided, and the unloading unit 6 is provided with an unloading device 13.
The base of is located.

The front end of the panel conveyor 14 is connected to the side of the panel carry-in device 8, and the front end of the mask conveyor 15 is connected to the side of the first mask carry-in device 11. 2
On the side of the mask carrying device 12, on the side opposite to the tip of the mask conveyor 15, there is a direction changing device 16.
The distal end of the discharging device 13 is connected to the base of the discharging conveyor 17.

Further, a rotation shaft 18 is erected at the center of the base 2, and horizontal rotation arms 19 are attached to the upper part of the rotation shaft 18 at every 90 degrees. A panel holding device 20 is provided so as to be movable up and down relative to the panel carrying-in section 3, the first mask carrying-in section 4, the second mask carrying-in section 5, and the carrying-out section 6.

Here, the operation of this combined machine 1 will be briefly explained.

Panels P ₁ , P ₂ and shadow masks M ₁ , M ₂ of relatively small cathode ray tubes, for example, 14 inches and slightly larger cathode ray tubes, for example 16 inches, are mixed on the panel conveyor 14 and the mask conveyor 15 so that they form pairs, respectively. When the panels P 1 and P 2 are carried in order, the panels P ₁ and P ₂ are carried into the panel carrying-in section 3 via the panel carrying-in device 8 and positioned by the panel positioning device 7, and the shadow masks M ₁ and M ₂ are
The size of the small shadow mask M 1 is detected by a sorting device (not shown) at the tip of the mask conveyor 15 , and the small shadow mask M ₁ is transferred to the first mask carrying device 11 . The large shadow mask M ₂ is carried into the first mask carry-in unit 4 via the direction changing device 16 and positioned by the first mask positioning device 9 .
The mask is transferred to the second mask carrying unit 5 via the second mask carrying device 12, and is positioned by the second mask positioning device 10.

Then, the rotation shaft 18 rotates counterclockwise intermittently by 90 degrees to move each panel holding device 20 to the panel carrying-in section 3, the first mask carrying-in section 4, the second mask carrying-in section 5, and the carrying-out section. As _shown in FIG.
Or, if the shadow mask M ₁ or M ₂ corresponding to the panel P ₁ or P 2 held by the rotation of the rotation shaft 18 is moved to the mask loading section 4 or 5 where the shadow mask M ₁ or M ₂ corresponding to the panel P 1 or P 2 held is moved. The shadow mask M ₁ or M ₂ is assembled to the panel P ₁ or P ₂ held in this state by an assembly mechanism (not shown) provided in the mask positioning device 9 or 10, and then raised and then rotated. When it moves to the unloading section 6 by rotation of the shaft 18, it descends and unloads the assembly of the panel P ₂ or P ₂ and the shadow mask M ₁ or M ₂ onto the unloading device 13, and then rises.

And panel P ₁ or P ₂ and shadow mask
The assembly M ₁ or M ₂ is carried out by the carrying-out device 13 onto the carrying-out conveyor 17 .

Next, the panel positioning device 7 of the combination machine 1 will be explained based on FIGS. 3 to 10.

Figure 3 shows each of the above panels P ₁ and P ₂ .
Panel pins PP ₁ and PP 2 are protruded from the inner surface of one of the long edges of each panel P ₁ and P ₂ , and panel pins MPP _{1 and} MPP serving as references are provided on the inner surface of the two opposing short edges. ₂ is installed protrudingly.

The above panel pins PP ₁ and PP ₂ are connected to the panel
The reference panel pins MPP ₁ and MPP ₂ are located on the Y axis passing through the center O of panels P 1 and P ₂ , and the X axis passing through the center O of panels P ₁ and _{P 2 is} in the direction of the other long edge. XQ ₁ axis translated by Q ₁ and Q ₂ to XQ ₂
It is located on the axis, and the values of Q ₁ and Q ₂ differ depending on the type of cathode ray tube.

Note that, depending on the type of cathode ray tube, a panel pin is also provided protruding from the inner surface of the other long edge of the panel, but here, as described above, a panel pin is provided protruding from the inner surface of the other long edge of the panel.
Panel pin MPP ₁ provided on one short edge,
Since it is based on MPP ₂ , we will omit the details.

Then, as shown in FIG. 4, the panel positioning device 7 includes a panel mounting table 25, a pipe type switching mechanism 26, an X-axis position adjustment mechanism 27, a Z-axis/Y-axis position adjustment mechanism 28, It is composed of a horizontal maintenance mechanism 29.

As shown in FIG. 5, the panel mounting table 25 has four pillars 36 erected on each corner of a horizontal base 35, and a guide block 37 is attached to the top of each pillar 36. Each guide block 37
A flat surface 38 is provided on the upper surface of the panel P ₁ and P ₂ to support the corners of the opening end surfaces (sealing surfaces), and small panels are installed inside and outside of this flat surface 38.
Circular projection 4 with guide slope 39 for P ₁
0 and a large panel P ₂ by providing a substantially L-shaped protrusion 42 having a guide slope 41.

As shown in FIG. 6, the pipe type switching mechanism 26 includes a horizontal moving plate 45 provided at the upper center of the base 35 so as to be movable in the Y-axis direction via a plurality of rollers 46. 4
First and second stoppers 47 and 48 are provided on the base 35 to face each other on both end faces of the base 35 in the moving direction.

A hole 49 is formed at one end of the moving plate 45, and a substantially L-shaped lever 51 is pivotally supported on the upper part of the base 35 via a support member 50 that is loosely fitted into the hole 49. is linked to the moving plate 45, and
The other end is pivotally attached to the tip of a piston rod of an air cylinder 53 which is pivotally supported at the upper part of one corner of the base 35 via a support member 52, and when the air cylinder 53 operates, the movable plate 45 is moved to the first position. The stopper 47 or the second stopper 48 is adapted to come into contact with the stopper 47 or the second stopper 48.

As shown in FIGS. 7 to 9, the X-axis position adjustment mechanism 27 includes a plate 56 that is long in the X-axis direction and is attached to the top of the moving plate 45 of the pipe type switching mechanism 26 via a support 55. This plate 5
A pair of guide members 57 are linearly attached on the plate 56 along the length direction of the plate 56, and a substantially L-shaped moving block 58 is fitted onto each guide member 57. on the panel
It is constructed by attaching pushers 59 to panel pins MPP ₁ and MPP ₂ of P ₁ and P ₂ .

A support member 60 is placed at the upper center of the plate 6.
A lever 61 is pivotally supported via the
Both ends of the lever 61 are symmetrically linked to the inner end of each moving block 58, and one end of the lever 61 is connected to the support member 62 at the upper end of the plate 56.
The piston rod of the air cylinder 63 is pivotally supported through the piston rod.
3, each of the moving blocks 58 moves forward and backward along each guide member 57 in opposite directions at the same speed.

As shown in FIGS. 7 to 9, the Z-axis/Y-axis position adjustment mechanism 28 has a guide member 65 on the outer surface of each moving block 58 of the X-axis position adjustment mechanism 27 in the vertical direction, that is, the Z-axis. A lifting block 66 is fitted to each guide member 65, and a lifting block 66 is attached to the outer upper part of each lifting block 66 for panel pins MPP ₁ and MPP ₂ of panels P ₁ and P ₂ .
It is constructed by attaching an engaging piece 68 having a substantially V-shaped recess 67 to the outside of each pusher 59 of the X-axis position adjustment mechanism 27.

A guide rail 69 having a U-shaped cross section is fixed to the outer center of each lifting block 66 along the moving direction of the moving block 58, and the plate 56 of the X-axis position adjustment mechanism 27 is attached to each guide rail 69. A roller 72 that is pivotally supported via a support 71 is engaged with the tip of the piston rod of an air cylinder 70 attached to the lower portion of both ends, and the operation of each air cylinder 70 causes each of the lifting blocks 66 to move up and down from each moving block 58. It is designed to move up and down along each guide member 65 regardless of its position.

A vertical pin 73 implanted in the plate 56 is engaged with the support 71 of each roller 72 to restrict rotation of the support 71.

As shown in FIG.
5 is positioned vertically on the Y-axis via a support tube 76, and cylindrical portions 78 at the bottom of both ends of a bridge 77 long in the Y-axis direction are slidably fitted to each guide shaft 75, At the top of both ends of this bridge 77 are panels P ₂ ,
A pad 79 made of an elastic material is fixed to the opening end surface (sealing surface) of P ₂ so that its upper surface is located on the same horizontal plane, and the bridge 77
Each guide shaft 7 between each cylinder portion 78 and each support cylinder 76
5 and a coil spring 80 is inserted thereinto.

Then, the bridge 77 receives a pushing force slightly smaller than the weight of the panels P ₁ and P ₂ by the coil spring 80, and when the panels P ₁ and P ₂ are supported on the panel mounting base 25, the panel
It descends due to the weight of P ₁ and P ₂ , and rises when the panels P ₁ and P ₂ are not supported on the panel mounting table 25 .

Next, the operation of this panel positioning device 7 will be explained.

Panel P ₁ or
When P ₂ is carried in and placed on the panel mounting table 25, the panel P ₁ or P ₂ is placed on each guide block 3.
It is supported on the plane 38 with the X-axis direction and the Y-axis direction approximately positioned by the guide slope 39 of the circular protrusion 40 of No. 7 or the guide slope 41 of the approximately L-shaped protrusion 42 .

Then, the panel is detected by a pipe type detection device (not shown).
The sizes of P ₁ and P ₂ are detected, and in the case of a small panel P ₁ , the piston rod of the air cylinder 53 of the pipe type switching mechanism 26 is retracted, and the lever 51 is rotated clockwise in FIGS. 4 and 6. The moving plate 45 comes into contact with the first stopper 47, and each pusher 59 of the X-axis position adjustment mechanism 27 is thereby moved.
and each engagement piece 6 of the Z-axis/Y-axis position adjustment mechanism 28
8 is the position for each panel pin MPP ₁ , i.e.
In the case of _a large panel _P2 , the piston rod of the air cylinder 53 is moved forward, the lever 51 is rotated counterclockwise, and the movable plate 45 is moved to the second stopper. 48
As a result, each pusher 59 and each engaging piece 68 are positioned relative to each panel pin MPP ₂ , that is, on and below the XQ ₂ axis.

Next, the piston rod of the air cylinder 63 of the X-axis position adjustment mechanism 27 is moved forward, and the lever 61 is rotated clockwise in FIGS. 4 and 7.
Each pusher 59 via each moving block 58
Each panel pin MPP ₁ of panel P ₁ or P ₂ is moved outward along the XQ ₁ axis or the XQ ₂ axis at the same speed and an equal distance.
Alternatively, it comes into contact with the front end surface of MPP ₂ , thereby adjusting the position of panel P ₁ or P ₂ in the X-axis direction.

Next, the piston rods of each air cylinder 70 of the Z-axis/Y-axis position adjustment mechanism 28 are advanced synchronously, and each engaging piece 68 is raised via each lifting block 66, whereby each engaging piece 68 is moved into the recessed portion. 67 to connect panel P ₁ or P ₂ to each panel pin MPP ₁ or
The sides of MPP ₂ are supported and lifted to a predetermined height, and the position of panel P ₁ or P ₂ in the Z-axis direction is adjusted. At the same time, each panel pin MPP ₁ or MPP ₂ of panel P _{1 or P 2 is} Move to the valley or center of the approximately V-shaped recess 67 of the joint piece 68,
The position of the panel P ₁ or P ₂ in the Y-axis direction is adjusted. Also, as the panel P ₁ or P ₂ rises, the bridge 77 of the horizontal maintenance mechanism 29 is moved by the pressing force of the coil spring 80 to move each pad 79 toward the panel P ₁
Or, the panel P _{1 or} P 2 is raised horizontally while in contact with the open end surface (sealing surface) of P 2, and thereby the panel P ₁ or P ₂ is aligned with the axis of the panel pin MPP ₁ or MPP ₂ , that is, the XQ ₁ axis or the XQ ₂ axis. The horizontal position of panel P ₁ or P ₂ is maintained without rotating around .

Note that FIG. 11 shows another embodiment of the tube type switching mechanism, and while the tube type switching mechanism 26 described above corresponds to two types of cathode ray tube panels P ₁ and P ₂ , this The tube type switching mechanism 85 is capable of handling three or more types of cathode ray tube panels.

That is, this pipe type switching mechanism 85
An index unit 86 is located outside one end of the moving plate 45 in the direction of movement of the moving plate 45, which is provided on the moving plate 45 so as to be movable in the Y-axis direction via a plurality of rollers 46.
A large number of stoppers 88 corresponding to the types of cathode ray tube panels are attached to the rotary disk 87 of this index unit 86, and this index unit 86 is controlled by a tube type detection device. A rotary disk 87 of the index unit 86 is rotated in response to a signal from the detection device, and a predetermined stopper 88 is moved to a position where it comes into contact with the moving plate 45.

As described above, according to the present invention, when positioning a panel with reference to a pair of opposing panel pins, the positioning mechanism is configured on a moving plate, and the moving plate is moved in a direction perpendicular to the panel pins. Since the positioning mechanism is formed so that it can be formed so as to selectively engage with the stopper corresponding to the type of panel, it is possible to reliably and quickly move the positioning mechanism to the position of the panel pin to position a plurality of types of panels. In addition, the positioning mechanism has a pair of pushers that move from the inside at the same speed and come into contact with opposing panel pins, making it easy to position the panel pins reliably and easily even when the types of panels are different. Furthermore, since the panel is lifted by supporting the panel pins facing each other by the approximately V-shaped recesses of the pair of engaging pieces that move together with each pusher, the panel can be lifted even when the types of panels are different. The vertical positioning of the pad and the positioning in the direction perpendicular to the panel pin can be performed simultaneously and easily, and the pad is brought into contact with the end face of the panel with a push-up force that is slightly smaller than the weight of the panel. Even when the panel is lifted, it can be maintained horizontally, resulting in extremely accurate and rapid panel positioning.

[Brief explanation of drawings]

Fig. 1 is a plan view of a combination machine using the panel positioning device of the present invention, Fig. 2 is an explanatory diagram of its operation, and Fig. 3 is a plan view of a combination machine using the panel positioning device of the present invention.
The figure is a bottom view of the panel showing the arrangement of the panel pins, Figures 4 to 10 show an embodiment of the panel positioning device of the present invention, Figure 4 is a plan view thereof, and Figure 5 is the panel mounting A front view showing a part of the stand, FIG. 6 is a plan view of its pipe type switching mechanism, and FIGS. 7, 8, and 9 are its X-axis position adjustment mechanism and Z-axis/Y-axis position adjustment mechanism, respectively. FIG. 10 is a side view of the horizontal maintenance mechanism, and FIG. 11 shows another embodiment of the panel positioning device of the present invention, including a pipe type switching mechanism. FIG. P ₁ , P ₂ ... Panel, MPP ₁ , MPP ₂ ... Panel pin, 1 ... Combiner, 7 ... Panel positioning device, 25 ... Panel mounting stand, 35 ... Base, 4
5...Moving plate, 47, 48...Stopper,
58...Moving block, 59...Pushiya, 67
... recess, 68 ... engagement piece, 79 ... pad, 8
8...Stotsupa.

Claims (1)

[Claims] 1. In a device for positioning a panel having panel pins on the inner surfaces of two opposing edges, a panel mounting table provided on a base supports the panel with its opening facing downward; and a panel mounting table provided on the base. a movable plate movable in the direction of the other two opposing edges of the panel; a plurality of stoppers selectively engaging the movable plate to position the movable plate at a position corresponding to the type of panel; A pair of moving blocks provided on the moving plate move forward and backward from the inside at the same speed toward two opposing edges of the panel, and a pair of moving blocks provided on each of the moving blocks move the panels toward each other by moving the moving blocks forward. a pair of pushers that abut on the front end surfaces of the respective panel pins; and a pair of pushers located outside the pushers that are movable up and down on each of the movable blocks; a pair of engaging pieces that support and lift the panel; and a pad that is provided on the base and abuts horizontally against the end faces of the other two opposing edges of the panel with a pushing force slightly smaller than the weight of the panel. A panel positioning device characterized by comprising: