JP2000200550A - Frit seal device and frit seal method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the rate of the occurrence of inferior goods by discharging positively the gas generated inside a cathode ray tube, by agreeing the opening part of a neck part of a funnel part with the position of an air nozzle and conveying, by excluding inclination at the time of conveyance connection of a conveying jig of the cathode ray tube, in a frit seal furnace of a fixed type air nozzle system in which a great number of air nozzles are arranged along the conveyance direction of the conveying jig in the furnace. SOLUTION: In order to obtain a cathode ray tube 2 by loading a conveying jig 6, on which the cathode ray tube 2 is positioned and loaded in a preceding process, on a chain conveyer 10 on which plural rows thereof are placed side by side, and by moving it in a frit seal furnace 1 and simultaneously by heating and fusing it, this device is composed of air nozzles 13 arranged along the conveyance direction of the conveying jig 6, and an air supply chamber for blowing hot air on the surface of a panel, on the bottom face side of the furnace 1 body, and plural rows of the conveying jigs 6 are closely lined up perpendicularly to the row direction of the chain conveyer 10, and the plural rows of the conveying jigs 6 after lining-up are transferred simultaneously by a transfer equipment 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frit seal device and a frit seal method, in which a panel and a funnel are set on a transfer jig via a frit seal, and are mounted on a transfer device provided with a plurality of rows in order. The present invention relates to a manufacturing technique for obtaining a cathode ray tube by heating and fusing with a heating device while moving inside a frit seal furnace.

[0002]

2. Description of the Related Art Conventionally, a cathode ray tube has been used for a cathode ray tube of a television or a CRT of a monitor of a personal computer. The manufacturing method in the case of a color cathode ray tube is such that RGB and matrix layers of the three primary colors are formed on the back side of the panel, and a funnel having a frit portion corresponding to the frit portion of the panel is bonded to the panel via a frit seal material. After placing it on a conveyor jig, placing it on a net conveyor, and moving it inside the frit seal furnace, it blows heated air upwards from below, thereby heating the panel and funnel, The cathode ray tube is obtained by fusing the sealing material.

A conventional frit seal furnace will be briefly described with reference to the accompanying drawings. FIG. 10 is a plan view (a) and a front view (b) showing an inlet portion of a conventional frit seal furnace.
It is. In this figure, the cathode ray tube 2 is composed of a panel portion 3, a frit seal material 4, and a funnel portion 5, and is set on a transport jig 106 so as to be joined in the previous process as shown in the drawing. Chain conveyor 12
, And is transferred onto the net conveyor 110. The net conveyor 110 is provided in the frit seal furnace 101, and continuously transports the transport jig 106 in the direction of the arrow as illustrated.

In the course of this conveyance, X in FIG.
As shown in FIG. 11 which is a cross-sectional view taken along the X-ray arrow, heating air guided by an air duct provided in the frit seal furnace 101 is caused to flow upward from below, so that the entire panel and funnel and the frit seal material The cathode ray tube 2 is obtained by heating and fusing the cathode ray tube 4.

[0005] As described above, the chain conveyor 120
If you transfer to the net conveyor 110 from
The transfer jig 106 placed on the net conveyor 110 may be inclined as shown in FIG.
And the center line CL2 of the transfer jig 106 placed on the chain conveyor 110 is tilted, and the transfer is performed with the tilt state. Even if the sheet is conveyed in such an inclined state, no particular problem arises because the heated air is blown from below onto the entire cathode ray tube 2 as described with reference to FIG.

Recently, during bonding in a furnace, the gas generated from the fluorescent paint applied to the back surface of the panel 3 is actively discharged to the outside through the opening of the neck of the funnel 5. Defective products caused by gas are eliminated. For this reason, a furnace in which an air nozzle is provided in a furnace and air is introduced from an opening of a neck portion of the funnel portion 5 is becoming mainstream.

[0007] For this purpose, Japanese Patent Application Laid-Open No. 07-0037502 is disclosed.
As disclosed in Japanese Patent Application Laid-Open Publication No. H10-260, it has been proposed to provide an air nozzle that moves in accordance with the movement of a transport jig for a cathode ray tube.

In addition, instead of the air nozzle moving in accordance with the movement of the transfer jig, a fixed air nozzle system in which a number of air nozzles are arranged in the furnace along the transfer direction of the transfer jig. Has the advantage that the apparatus can be simply constructed.

[0009]

However, in this fixed air nozzle type furnace, in order to introduce air from the opening of the neck of the funnel portion 5 with the transfer of the transfer jig, the transfer jig 106 is required. It is necessary to make all the center lines CL1 coincide with each other. In other words, if the airbag is inclined at the time of connection as described above, a gap occurs between the arrangement position of the air nozzle and the opening of the neck portion of the funnel portion, and there is a problem that air cannot be sent into the inside. .

Accordingly, the present invention has been made in view of the above-mentioned circumstances, and has a fixed air nozzle type frit seal furnace in which a number of air nozzles are arranged in a furnace along a conveying direction of a conveying jig. By eliminating the inclination of the transfer jig of the cathode ray tube when connecting, the opening of the neck of the funnel is aligned with the position of the air nozzle, and the gas generated inside the cathode ray tube is positively transported. It is an object of the present invention to provide a frit seal device and a frit seal method capable of reducing the rate of occurrence of defective products by discharging the products in a targeted manner.

[0011]

According to the present invention, in order to solve the above-mentioned problems and achieve the object, in a previous step, a panel and a funnel are positioned and placed on a transfer jig via a frit seal. A frit sealing device for obtaining a cathode ray tube by heating and fusing with a heating means while moving the inside of a frit seal furnace while placing the carrying jig on a carrying means provided in parallel with a plurality of rows, An air nozzle unit that supplies the air from the opening of the neck of the funnel by disposing the heating unit on the bottom surface side of the frit seal furnace along the conveying direction of the conveying jig; An air supply unit that blows heated air onto the surface of the panel, and the conveying unit includes two side edges along a conveying direction of a conveying jig to enable the supply of the heated air from the air nozzle unit. And a pair of endless bodies which are continuously driven, and the transfer jig conveyed from the previous step is transferred and the plurality of rows of the jigs are moved in the column direction of the conveying means. Aligning means for aligning without any gap so as to be orthogonal, and the plurality of rows of the conveying jig after the alignment,
And a transfer means for simultaneously transferring the data toward the transport means.

The aligning means is disposed between a transfer section for gripping and transferring the transfer jig conveyed from the previous step and the pair of endless bodies, and temporarily moves the transfer jig. And a positioning unit for positioning the transfer jig mounted on the temporary mount by the transfer unit without any gap so as to be orthogonal to the row direction of the transfer means. The transfer means moves between a base, an elevating base moved up and down by the elevating part of the base, and a sneaking position and a standby position where the moving part of the elevating base moves underneath the transporting means. Thus, a plurality of rows of transfer jigs on the temporary placing table are transferred to the transfer means without gaps, and a plurality of rows of elevating units are provided.

A frit sealing method for obtaining a cathode ray tube by heating and fusing with a heating means while moving in a frit seal furnace, wherein a panel and a funnel are conveyed through a frit seal in a pre-process. A step of preparing a transfer jig positioned and mounted on the tool, and transferring the transfer jig conveyed from the step, and transferring the transfer jig for a plurality of rows to a plurality of rows of a frit seal furnace. A step of aligning the plurality of rows of the transfer jigs without any gap so as to be orthogonal to the column direction, and simultaneously transferring the plurality of rows of the transfer jigs toward the transfer means without a gap, Transporting the transport jig inside the frit seal furnace by the transport means comprising a pair of endless bodies that are continuously driven by placing both side edges along the transport direction; and Supplying air from an air nozzle portion disposed along the transport direction of the transport jig through an opening in the neck of the funnel, and blowing heated air from an air supply portion onto the surface of the panel And a step.

[0014]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a plan view (a) and a front view (b) showing an inlet portion of a frit seal furnace 1. FIG. FIG.
FIG. 2 is a cross-sectional view taken along line XX of FIG. First, in FIG. 1, the frit seal furnace 1 is shown by a dashed line, and a state in which two rows of chain conveyors 10 are provided is shown. Although the number of rows is provided, the number of rows may be larger or smaller, and the rows are arbitrarily determined according to the scale of the manufacturing equipment.

On the other hand, the cathode ray tube 2 comprises a panel portion 3, a frit sealing material 4, and a funnel portion 5. For this purpose, in the previous step, as shown in the figure, the panel 3, the frit sealing material 4, and the funnel 5 are set on the transport jig 6 so that their joining surfaces coincide with each other, and placed on the chain conveyor 10. Transported.

In the chain conveyor 10, a conveying jig 6 is placed on the back of a chain stretched between a chain sprocket 11 and a motor-driven sprocket (not shown) without any gap, and conveyed in the direction of the arrow. As shown in the figure, a part of the frit seal furnace 1 is provided so as to be outside the furnace. An air nozzle 13 is provided between the chain conveyors 10 arranged in this way and the center line CL.
1, and blows air to a guide member 7 fixed to the transfer jig 6. In addition, the guide member 7 is provided with a hollow tube 8 shown by a broken line communicating with an upper-door-shaped portion formed at a substantially central portion of the guide member 7. It is set in the previous step so as to enter the opening of the neck portion of the helmet.

Next, referring to FIG.
Supplies heating air from the supply chamber 17 on the ceiling side in the direction of the arrow, and blows the air downward from the hole 18 so that the heating chamber 16
While being exhausted to the outside via an exhaust duct 19. The air nozzle 13 is communicated with an air supply pipe 14 and is configured to supply air into the cathode ray tube 2.

With respect to the frit seal furnace 1 configured as described above, the transfer jig 6 placed on the conventional upstream conveyor 100 as shown in FIG. If the transfer is made, the guide perpendicular to the transport direction is not performed, the level of both conveyors can not be adjusted completely as a cause of deviation, and the influence of distortion of the transport jig is large. The center line CL1 of the transfer jig 6 properly placed on the chain conveyor 10 and the center line C of the broken jig 6 shown in broken lines placed on the chain conveyor 10 at an angle.
L2 is inclined, and is conveyed into the furnace while maintaining the inclined state, and the position of the air nozzle 13 and the guide member 7
And the air cannot be sent in.

Therefore, the transfer jig 6 transferred from the previous process
It is necessary to align the six rows without any gap so as to be orthogonal to the row direction of the chain conveyor 10 to prevent inclination and to reliably send air from the air nozzle 13 into the cathode ray tube 2. FIG. 3 is an external perspective view showing a main part of an entire apparatus for supplying a transfer jig to the frit seal furnace configured as described above.

In this figure, a large number of air nozzles 13 are arranged in six rows along the center line CL1 in the frit seal furnace 1 shown by a dashed line in the figure. In order to enable the supply of air from the air nozzle section 13, both side edges along the conveying direction of the conveying jig 6 are placed on the pair of chain conveyors 10 to continuously supply the air. It is configured to carry. The chain sprocket 11 has twelve parts fixed to the same shaft body 12, and by supporting the shaft body 12 as shown in the drawing, a chain is stretched between the chain sprocket and a chain sprocket (not shown). I have.

Between the chain sprockets 11 provided in this manner, six temporary placing stands 21 (only five are shown in the drawing) are fixed on columns 22 fixed to the floor surface. Six transport jigs 6 are temporarily placed on the temporary placing table 21 as described later. A positioning device 33 is provided on one side surface of the temporary placing table 21. The positioning device 33 does not have to be a device that guarantees the accuracy of a transfer device described later. The transfer device 26 is arranged so that the clearance in the direction orthogonal to the transport direction of the chain conveyor 10 is zero, so that the transfer can be performed orderly.

In the preceding step, the transport jig 6 set on the transport jig 6 so that the panel 3, the frit seal material 4, and the funnel 5 have the same joining surfaces,
It is sequentially conveyed to a stop position by the roller conveyor 23,
Positioning is performed by pressing against the stopper 24 by the positioning device 25, and waiting for pick-and-place by the transfer device 26 having the pair of gripping bodies 27 is performed. 4, the transfer device 26 is further provided with a roller 31 which runs on a pair of right and left rails 30 and a carriage. At 28, the above-described gripping body 27 driven by a motor (not shown) is provided, and the holding jig 27 is driven vertically by an elevating cylinder 32 so that the transport jigs 6 are sequentially placed on the temporary mounting table 21 as described later. Is configured.

Further, a support rod 9 for positioning the cathode ray tube 2 by abutting the guide 29 by fixing the cathode ray tube 2 as shown in the drawing is fixed to the transport jig 6. Further, a plurality of claw bodies 27a are fixed to the lower end of the gripping body 27, and these claw bodies 27a infiltrate below the transport jig 6 by moving the gripping body 27 to a position shown by a broken line. This allows the pickup to be picked up, and is moved to the standby position shown by the solid line to be placed on the temporary placing table 21. As shown in the side view of FIG. The tool 6 is placed on the temporary table 21.

Referring again to FIG. 3, the six transfer jigs 6 placed on the temporary placing table 21 are simultaneously transferred to the chain conveyor 10 by the transfer device 20.

For this purpose, the transfer device 20 has a base 35 fixed to the floor surface, a lifting base 37 raised and lowered by a lifting cylinder 36 fixed to the base 35, and a lifting base 37 fixed to the lifting base 37. By fixing the linear bush 39 guided by the linear guide 38 to the bottom surface, the linear bush 39 is moved between a sneaking position that sneaks below the space sandwiched by the temporary placing table 21 and a standby position illustrated in FIG. A plurality of rows of lifting / lowering units 40 for simultaneously transferring a plurality of rows of transfer jigs on the temporary placing table 21 toward the chain conveyor 10, and both side edges of the transfer jig are placed thereon. It is composed of members.

FIGS. 6A and 6B are explanatory diagrams of the operation of the transfer device 20. FIG. 6A shows a state in which the elevating unit 40 is located at the standby position.
(B) shows a state where it is located at a transfer position for transferring to the chain conveyor 10, and the temporary placing table 21 is shown slightly separated from the chain conveyor 10 for further explanation.

In FIG. 6 (a), in the standby state, the elevator 40 has been moved to the position shown by the solid line. The stroke B is further moved, and the transfer jig 6 is moved.
Is lifted upward from the temporary placing table 21. Next to FIG.
3 (b), while maintaining the state in which the transport jig 6 is lifted upward from the temporary placing table 21, the elevating unit 40 is moved toward the chain conveyor 10 at a high speed, and is moved into the space sandwiched between the chain sprockets 11 in FIG. Infiltrate. At this time, by setting the mounting surface of the transport jig 6 further away from the back of the chain by the distance C, the transport jig 6 moves at a low speed and comes into contact with the preceding transport jig 6 to reduce the gap to zero. To move. Before or after this, the lifting cylinder 36 is driven to move the lifting platform 40 downward, and the chain conveyor 10 is moved.
Place on. Then, after being further moved downward, it is moved to the position shown in FIG.

FIG. 7 is an external perspective view showing the moving direction of the transfer jig by arrows for explaining the operation of the apparatus described above. FIG. 8 is an explanatory diagram of the operation.

Referring to FIGS. 7 and 8, an operation example will be described. In step S1, the frit seal furnace 1 is prepared, and heating air and air are supplied from the air nozzle. In step S2, a total of 12 chains are provided. Conveyor 10 is simultaneously activated in the direction of arrow D to prepare for receiving the transfer jig. Thereafter, in step S3, the first transporting jig 6 on which the cathode ray tube 2 set as described above is mounted is transported on the roller conveyor 23 in the direction of arrow D1, and is moved in the direction of arrow D2 at the stop position to be positioned. Then, it waits for pickup by the transfer device 26. Thereafter, the process proceeds to step S4, where the transfer device 26 is moved upward, gripped by the gripping body, lifted in the direction of arrow D3, and then moved in parallel to the temporary placing table 21 on the side of the positioning device 33, whereupon the arrow D4 The transport jig 6 is placed down in the direction. Subsequently, in step S5, the second conveying jig 6 is conveyed by the roller conveyor 23 and stands by, and is similarly picked up and moved on the temporary placing table 21 in the second row in the direction of arrow D5. (Step S6).

Thereafter, the same operation is repeated, and it is determined in step S7 whether or not the transport jig 6 has been mounted on all the six temporary mounting tables 21, and the mounting is performed in a state where the gap becomes zero. The process ends (step S9). Thereafter, as described in FIG. 6, the six transfer jigs 6 are simultaneously moved to the chain conveyor 1.
Transfer to 0. After that, in step S10, the transfer device 26
Is returned to the standby position, and the conveyor jigs for six rows are sent into the furnace by the chain conveyor 10 in an aligned state.

By repeating the above series of operations, the guide tube 8 provided at the center of the guide member 7 of the transfer jig 6 is formed.
And the relative positional relationship between the air nozzle 13 and the air nozzle 13 can be reliably maintained, so that the gas inside the cathode ray tube 2 can be heated while being discharged.

With the above configuration, it is easy to set and adjust the level in the height direction for connecting to the chain conveyor when installing the apparatus. In addition, even if there are dimensional variations in the outer shape of the transport jig, they are aligned without gaps, so that they are not affected by the variations.

FIG. 9 is an external perspective view showing another configuration of the transfer device 26. In FIG. 9, at least three locking portions 6a are fixed to the transfer jig 6 as shown in FIG.
Are configured to grip these with a pair of gripping bodies 27,
Moreover, by configuring the transfer device 26 to move in the XYZ directions, the transfer device 26 can be transferred directly to the chain conveyor. That is, the functions of the temporary placing table 21 and the transfer device 20 can be replaced by allowing the transfer device 26 to move in the XYZ directions.

[0035]

As described above, according to the present invention, there is provided a fixed air nozzle type frit seal furnace in which a number of air nozzles are arranged inside a frit seal furnace along the transport direction of a transport jig. By eliminating the inclination of the transport jig when connecting the cathode ray tube, the opening of the neck of the funnel is aligned with the position of the air nozzle and transported, and the gas generated inside the cathode ray tube is actively A frit sealing device and a frit sealing method that can reduce the incidence of defective products.

[0036]

[Brief description of the drawings]

FIG. 1 is a plan view (a) and a front view (b) showing an inlet portion of a frit seal furnace 1. FIG.

FIG. 2 is a sectional view taken along line XX of FIG. 1 (b).

FIG. 3 is an external perspective view of the entire apparatus.

FIG. 4 is a side view (a) and a front view (b) of the transfer device 26.
It is.

5 is a side view of the entire apparatus, showing a state in which six transfer jigs 6 are placed on a temporary placing table 21. FIG.

FIG. 6 is an explanatory diagram of an operation of the transfer device 26.

FIG. 7 is an external perspective view for explaining the operation of the entire apparatus.

FIG. 8 is a flowchart for explaining the operation of the entire apparatus.

FIG. 9 is an external perspective view showing another configuration of the transfer device.

FIG. 10 is a plan view (a) and a front view (b) of a conventional frit seal furnace.

FIG. 11 is a sectional view taken along line XX of FIG. 10 (b).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frit seal furnace 2 Cathode ray tube 3 Panel part 4 Frit seal material 5 Funnel part 6 Transport jig 7 Guide member 8 Guide tube 10 Chain conveyor 11 Chain sprocket 13 Air nozzle 16 Heating room 20 Transfer device 21 Temporary mounting table 22 Column 23 Roller conveyor 26 Transfer device 27 Gripping body 30 rail

Claims (3)

[Claims] 1. In a pre-process, a transfer jig in which a panel and a funnel are positioned and mounted on a transfer jig via a frit seal is mounted on a transfer means having a plurality of rows and is placed in a frit seal furnace. A frit seal device for obtaining a cathode ray tube by heating and fusing with a heating means while moving the heating means, wherein the heating means is arranged along the transport direction of a transport jig on the bottom side of the main body of the frit seal furnace. The air nozzle unit that supplies heated air from the opening of the neck of the funnel, and an air supply unit that blows heated air to the surface of the panel. In order to enable the supply of air from the air nozzle portion, it is composed of a pair of endless bodies that are continuously driven by placing both side edges along the transport direction of the transport jig, and transported from the previous step. Means for transferring a transfer jig, and aligning the transfer jigs for the plurality of rows without any gap so as to be orthogonal to the column direction of the transfer means; and a transfer jig for the plurality of rows after the alignment. And a transfer means for transferring the sheets all at once to the transport means. 2. The transfer device according to claim 1, further comprising: a transfer unit configured to hold and transfer the transfer jig conveyed from the previous process; and a transfer unit that temporarily moves the transfer jig. And a positioning unit for positioning the transfer jig mounted on the temporary mount by the transfer unit without any gap so as to be orthogonal to the row direction of the transfer means. The transfer means moves between a base, an elevating base moved up and down by the elevating part of the base, and a sneaking position and a standby position in which the moving part of the elevating base moves underneath the transporting means. 2. The apparatus according to claim 1, further comprising: a plurality of rows of lifting / lowering units that transfer the plurality of rows of transfer jigs on the temporary placing table toward the transfer unit without gaps. The frit seal device as described in the above. 3. A frit sealing method for obtaining a cathode ray tube by heating and fusing with a heating means while moving in a frit seal furnace, wherein a panel and a funnel are transported through a frit seal in a pre-process. Preparing a transfer jig positioned and placed on the tool, transferring the transfer jig transferred from the step, and transferring the transfer jig for a plurality of rows to a plurality of rows of a frit seal furnace Aligning the transfer jigs for the plurality of rows after the alignment at once without gap toward the transfer means; and A step of transporting the transport jig inside the frit seal furnace by the transport means comprising a pair of endless bodies which are continuously driven by placing both side edges along the transport direction, and at the bottom side of the main body of the frit seal furnace. , From the air nozzle unit that is disposed along the conveying direction of octyl tool,
A frit sealing method comprising: a step of supplying air through an opening of a neck of the funnel; and a step of blowing heated air from an air supply unit to a surface of the panel.