JPS5947417B2 - Color picture tube panel conveyance device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a panel conveyance device for a color picture tube.

Generally, the manufacturing process for color picture tubes involves coating photoresist.
Coating processes such as graphite coating and three-color phosphor coating are required, and when automating such coating processes, a conveying device is required to hold the panels and transport them to each process in a predetermined order. is necessary.

The present invention relates to such a conveying device, which has a large number of carriers, each carrier grips a panel and transports it sequentially to each process, and freely tilts the posture of the panel as necessary. The object of the present invention is to provide a panel conveyance device for a color picture tube having various functions such as being able to accurately determine the position when attaching and detaching the color picture tube.

Hereinafter, the present invention will be described in detail along with embodiments shown in the drawings.

Figures 1 to 3 illustrate the overall structure of the device of the present invention.
In the figure, the reference numeral 1 represents the entire device, which in this embodiment is constructed in the form of a turntable.

That is, a motor 3 for rotational driving is attached to the lower part of the base 2, and a rotating shaft (not shown) is rotated from the motor 3 via a belt 4.

The rotation axis passes through a circular base plate 5 fixed to the upper end of the base 2 and extends upward from a circular boss 6 fixed to the tip of the head, as shown in FIGS. 1 and 2. A large number of radially protruding support arms 7 are provided, and a carrier 8 is fixed to the tip of each support arm 7.

As is clear from FIG. 1, these carriers 8 have a substantially U-shape with an open end, and although the internal structure of the carriers 8 was clarified in another application filed by the present applicant, the carriers 8 are The frame is hollow and houses a tilting mechanism for the panel support shaft, which will be described later, and employs a rack and pinion gear mechanism.

At the distal end of the carrier 8, a panel support shaft 9 is fixed to the distal ends of a pair of shafts 10 rotatably supported at the distal end of the carrier 8.

These pair of shafts 10 are connected to each other via a drive shaft provided in the carrier 8 and a bevel gear, and are rotated by an angle changing mechanism, which will be described later, to tilt the panel support shaft 9.

A carrier head 11 as shown in an enlarged view in FIG. 4 is fixed to the tip of the panel support shaft 9. As shown in FIG.

This carrier head 11 is a cast product and has a plurality of support arms 13 extending radially from a cylindrical portion 12 formed at one end, and positioning blocks 14 are provided on the sides of these support arms 13.
is installed.

The positioning block 14 includes a guide/15 that is slidably fitted into a long hole 13a bored in the side surface of the support arm 13.
It is provided so that its position can be adjusted over a certain range with respect to the support arm 13 using a guide, and can be fixed at a desired position with a set screw 16.

Further, a clamping para N4a is fixed to the tip of the positioning block 14, and a mounting para N4b is fixed to the base thereof, and the block is configured to be able to elastically contact the panel. .

A circular shielding plate 17 is fixed between the positioning block 14 and the support arm 13, and is arranged to prevent application liquid such as photoresist solution, developer, etc. from adhering to the support arm 13 side. .

One of these positioning blocks 14 is movable with respect to the support arm 13, as shown by reference numeral 14c in FIG. 4, and is configured to be movable via an L-shaped operating arm 18. Fixed block 14 and movable block 1
4c constitutes a chuck that holds the shibaneru.

That is, the operating arm 18 and the positioning block 14c are integrally connected to the support column 19 via a pin 20 so as to be rotatable.

The other end of the actuating arm 18 extends through the shielding member 17 toward the support arm 13, and is rotatably connected to the rear end of the sliding rod 22 via a pin 21.

The tip of the sliding rod 22 is connected to the boss 23 of the carrier head 11.
A spring 24 is elastically inserted between the side surface of the boss and the vicinity of the outer end of the sliding rod 22, and the pin 20 is centered on the operating lever 18. As shown in FIG. 4, a counterclockwise rotational behavior is given, and the chuck composed of the fixed block 14 and the movable block 14c is closed.

Further, an annular contact ring 25 is fixed to the outer periphery of the cylindrical portion 12 of the carrier head 11.
A semicircular notch 25a is formed in a part of the circumferential surface.

This semicircular notch 25a is a positioning notch, and its position is detected by a positioning mechanism, which will be described later, to stop the carrier head 11 at a predetermined position.

The positioning mechanism is configured as shown in FIG. 3, for example.

That is, as shown in FIG. 3, the positioning mechanism 26 is arranged at a panel attachment/detachment position at a predetermined position on the turntable base 20, and is provided with the frame 27 as a reference.

An air cylinder 29 is fixed to the lower side of the board 28 fixed to the upper part of the frame 27, and the tip of the rod of this air cylinder 29 connects to a frame 30 which is also slidably attached to the lower side of the board 28. A guide roller 31 is rotatably attached to the lower side of the tip of the frame 30.

Further, an air cylinder 32 for operating the operating lever 18 of the carrier head is attached to a lower position of the frame 30.

A motor 34 is attached to the upper side of the board 28 via a bracket 33, and a pulley 35 is fixed to the tip of the output shaft of the motor 34 via a reduction gear.

The guide roller 31, pulley 35, etc. described above move the panel support shaft 9 along with the intermittent rotation of the turntable.
For example, when the carrier head 11 is rotated vertically to the opposing position as shown in FIG. The friction pulley 36 is placed in contact with the friction pulley 36.

The state shown in FIG. 3 is for explaining the panel mounting state, and the illustrated example shows a structure in which the friction pulley 36 for rotating the carrier head is attached to the upper end of the panel support shaft 9. As shown in FIG. 2, it may be provided near the carrier head 11 or it may be provided either way.

In addition, for the rotational positioning of the carrier head 11 by the guide roller 31 and the automatic transfer of panels to the carrier head, it is necessary that the inclination angle of the Shibanel support shaft 9 for each carrier is always constant regardless of the presence or absence of external force. be.

In the embodiment shown in FIG. 3, a pulley 59 for fixing the inclination is pressed against the friction pulley 12 of the carrier head 11 to keep the inclination constant.

That is, the swingable arm 60 is fixedly supported in the middle.
A pulley 59 is attached to one end and an air cylinder 61 is attached to the other end, and a stopper 62 is attached to the air cylinder side of the arm to regulate the swing angle of the arm.

The swinging of the arm is performed to separate the pulley 59 from the friction pulley 12 so that the pulley 59 does not apply excessive force to the carrier when the carrier is moved, and the arm 60 is moved to an arbitrary position by a push screw mechanism or the like to contact the friction pulley. It is regulated by a stopper 62 provided so that it can be stopped.

In addition, if the pulley 59 does not interfere with the carrier's movement axis even if the arm 60 is fixed, the swing mechanism can be omitted.

Alternatively, the inclination angle can be made constant by pressing the pulley 59 against the friction pulley 36.

On the other hand, the details of the base 2 are as shown in FIGS. 5 to 7.

That is, a side plate 38 curved into an arc shape having a constant curvature and having a guide groove 37 continuous over the entire circumference is attached to the surface of the base 2, as shown in expanded view in FIG.

This arc-shaped side plate 38 is divided into side plate blocks 38b at equal angular intervals as shown by dividing lines 38a in FIG.

The angular interval of the side plate blocks 38b can be set arbitrarily depending on the purpose, and each divided block 38b
The bent portions formed on the abutting surfaces are connected to each other using bolts or the like to form a cylindrical shape as a whole.

Guide grooves 37 that draw one continuous closed curve as a whole are independently formed in these side plate blocks 38b, and care is taken to form the intended continuous guide groove when the side plate blocks 38b are connected to each other. has been done.

By the way, in order to prevent the side plate 38 from being divided into two upper parts because the guide groove 37 is continuously formed, a U-shape is formed on the inside of the side plate 38 as shown in FIG. A section steel 39 having a shaped cross section is used to fix and hold the upper and lower side plates in a fixed position.

A guide roller 40 is rotatably fitted into the guide groove 37 as shown in FIG.
0 is provided at the lower end of the lifting rod 41.

The upper end of the lifting rod 41 fits into the frame of the carrier 8 as shown in FIG. It meshes with a pinion gear fixed at one end.

As a result, as the lifting rod 41 moves up and down, the tilting mechanism of the panel support shaft 9 centered on the drive shaft is operated as described above, but the specific structure thereof is disclosed in other applications filed by the present applicant. The details are not reproduced here.

Therefore, this guide groove 37 determines the elevation of the elevating rod 41, and its pressure angle and other parameters are set in advance according to a desired panel tilting angle.

By the way, in this embodiment, the side plate 38 is constructed as an assembly of side plate blocks 38b, so each side plate block can be freely replaced when the guide structure is worn out or when the shape of the guide groove is changed. Understand that it is possible.

On the other hand, the guide groove 37 can be formed by appropriately selecting the pressure angle within the width of the side plate 3B when the tilting angle of the panel is relatively small, as shown expanded in FIG. For example, if you want to obtain a large tilting angle close to 18 degrees, you need to set a large pressure angle for the guide groove, and you also have to set a large vertical displacement position. is too long to be practical.

Furthermore, when applying slurry, it is often necessary to tilt the panel while the carrier is stopped.

For this reason, in the present application, as shown in FIG. 6, when it is desired to obtain a large tilting angle of the panel such as when attaching or detaching the panel, or when it is desired to change the tilting angle while the carrier is stopped, the vertical A guide groove is provided, and an angle changing mechanism, which will be described later, is arranged inside the guide groove.

The angle changing mechanism is constructed as shown in FIGS. 8 and 9.

That is, inside the side plate 38, a pair of guide rods 43 are provided at positions facing the vertical guide grooves 42, and a pair of guide rods 43 are installed between the base plate 5 and the bottom plate 5.
A bracket 44 and a rack gear 45 are disposed facing each other on this guide rod 43, and are attached to the guide rod 43 by a slider 46 so as to be movable up and down.

A holder 47 having a U-shaped cross section for holding the guide roller 37 is fixed to the side of the upper end of the bracket 44 at a position facing the vertical groove 42 of the side plate 38, and a cam 48 is fixed to the side of the lower end. is fixed.

A support column 49 is arranged on the side facing the cam 48, and a plurality of limit switches 50 are attached to the support column 49 at predetermined intervals.

On the other hand, as is clear from FIG. 9, the rack gear 45 meshes with a pinion gear 54 fixed to the output shaft of a reducer 53, which is connected to the output shaft of a motor 51 via a coupling 52.

By the way, the conveyance device having the above structure is driven intermittently with a predetermined index, but at the stop position where the panel needs to rotate, the rotation occurs as shown in Figure 2. A device 55 is placed.

As is clear from FIG. 2, the rotation device 55 has a pulley 57 rotated by a motor 56, and when this pulley 57 and the friction pulley 36 of the carrier head 11 come into contact, the carrier head 11 and therefore the panel move at a predetermined speed. be rotated.

Next, the operation of this embodiment configured as above will be explained.

First, as shown in FIG. 3, when the carrier head 11 faces vertically downward and comes to the mounting position of the panel P, the pulley 59
and friction pulley 12, then pulley 35 and friction pulley 3.
6 are in contact with each other, and the guide roller 31 is in contact with the contact ring 25.

Then, the carrier head 11 rotates, and the guide roller 31 fits into the semicircular notch 25a of the contact ring 250.

Then, the back pressure of the air cylinder 29 decreases, and when this is detected, the motor 34 is stopped and the rotation of the carrier head 11 is also stopped.

That is, the carrier head 11 stops at a predetermined position determined by the position of the notch 25a.

Note that the positional displacement of the guide roller 31 may be detected by a limit switch or the like, and in that case, a buffer spring may be inserted between the air cylinder 29 and the guide roller 31.

Next, the air cylinder 32 is activated, and the operating lever 18 is pushed in a direction in which the sliding rod 22 is fitted into the boss 23 against the elastic force of the spring 24.

Then, the tip of the actuating lever 18 opens outward, and at the same time the third
As shown in the figure, the panel P is lifted by a panel mounting device (not shown) and fitted between the positioning blocks 14 of the carrier head 11.

This intrusion is detected by a detection device (not shown),
When the air cylinder 32 will be described later, the actuating lever 18 is returned to its original state by the elastic force of the spring 240, and its tip grips the panel P as shown in FIG. 4 to accurately position and hold the panel. When P is maintained, the guide roller 31 separates from the contact ring 25, the pulley 59 separates from the friction pulley 12, and the support arm 7 configured as a turntable is rotated by a predetermined pitch.

During this time, the guide roller 40 at the lower end of the lifting rod 41 fitted into the carrier 8 is guided and moved while being fitted into the guide groove 37 of the side plate 38, so that the lifting rod 41 moves according to the shape of the guide groove 37. The panel support shaft 9 is tilted according to the amount of elevation and descent, and the coating liquid is injected, and as the panel is moved through the guide groove 37, it is successively targeted as shown in FIG. 1, for example. tilted at an angle.

If it is necessary to rotate, it is rotated by a rotation device 55 or the like as shown in FIG.

When the panel comes to a position where it is necessary to tilt while the carrier is stopped, it enters the vertical groove 42 of the side plate 38, the guide roller 40 of the lifting rod 41 is held by the holder 47, and rotated via the reducer 53. The rack gear 45 driven by the pinion 54 is raised and lowered to a position controlled by the limit switch 50, and is tilted at any speed and at any tilting angle.

Thereafter, the same operation is repeated, and the panel goes through a predetermined coating process, and the coating of the panel is completed.

The above explanation was based on the case where the panel is rotated by an externally installed motor 34.56, but the second
The motor 58 may be directly connected to the panel support shaft 9 as shown in the figure.

Further, the contact ring 25 is connected to the cylindrical portion 12 of the carrier head 11.
It may be integrally molded.

Furthermore, the semicircular notch 25a of the contact ring 25 may be a flat notch.

However, the method of rotationally positioning and fixing the inclination of the carrier head can also be applied to a type of panel conveyance device in which the carriers are held movably on an oblong rail and connected endlessly to each other for intermittent movement. should be obvious.

As is clear from the above description, the device of the present invention has a carrier that accommodates a tilting mechanism for a panel support shaft at the tip of a support arm that is driven intermittently, and a panel is clamped at the tip of the panel support shaft. Since it is equipped with a positioning mechanism that detects the position of this carrier head, panels can be automatically mounted and transferred to each process in sequence, and can be used in the color picture tube panel coating process. can be automated with extreme precision.

[Brief explanation of the drawing]

The figures are for explaining one embodiment of the device of the present invention, in which Fig. 1 is a plan view, Fig. 2 is a side view, Fig. 3 is a side view of the positioning mechanism, and Fig. 4 is a partially longitudinal side view of the carrier head. Figure 5 is a plan view of the base, Figure 6 is a developed view of the side plate, Figure 7 is a sectional view of the side plate, Figure 8 is a side view of the angle-changing mechanism, and Figure 9 is the main components of the angle-changing mechanism. FIG. 1... Conveyance device, 2... Base, 7...
...Support arm, 8...Carrier, 9...
...Panel support shaft, 11...Carrier head,
14...Positioning block, 14a, 14b.
...Bat, 17...Blocking plate, 18...
...Actuation lever, 20, 21...Pin, 2
2...Sliding rod, 24...Spring, 25...Contact ring, 26...Positioning mechanism, 29,32゜62... ...Air cylinder, 31...Guide roller, 34.56,58.
...Motor, 12, 35, 36゜57.59...
...Friction pulley, 37...Guide groove, 38
...Side plate, 38a...Parting line, 38b
...Side plate block, 40 ... Guide roller, 41 ... - lifting rod, 42 ... Vertical groove, 43 ... Guide rod, 44 ...・・・・・・
・Bracket, 45...Rack gear, 46...
...Slider, 47...Holder, 48...
...Cam, 50...Limit switch, 5
1...Motor, 53...Reducer, 54
...Pinion gear, 60...Arm.

Claims (1)

[Scope of Claims] 1. They are fixed to the tips of a plurality of support arms arranged radially on a circular base, or can run endlessly connected to each other along oval-shaped rails. It was held in place and housed a tilting mechanism. A carrier is attached to the carrier, a carrier head is provided at the tip of a panel support shaft that is tiltably attached to the carrier and holds the panel, and a rotary positioning device is formed at the base of the carrier head or on the panel support shaft. A color picture tube characterized in that the carrier head is configured to be stopped at a predetermined rotational position, and a detection means for detecting the flat part or uneven part for positioning. Panel conveyance device. 2 Fixed to the tips of a plurality of support arms arranged radially on a circular base, or endlessly connected to each other along oval shaped rails, held movably, and tiltable. A carrier mounted with the mechanism housed therein, a carrier head that clamps the panel provided at the tip of a panel support shaft that is tiltably mounted on this carrier, and a base of the carrier head or the panel support shaft. A formed flat part or uneven part for rotational positioning, a means for detecting the flat part or uneven part for positioning, a means for opening and closing the chuck of the carrier head, and a carrier or a carrier during rotational positioning and panel transfer. Equipped with an external pulley that rotates in contact with a circular ring provided on the head to maintain a constant inclination angle of the panel support shaft, so that the inclination angle of the panel support shaft remains constant regardless of the manufacturing accuracy of each individual carrier when transferring panels. A panel conveyance device for a color picture tube, characterized in that it is configured as follows.