JPH04209439A - Installation device of panel and shadow mask in manufacturing equipment of color cathode ray tube - Google Patents

Abstract

PURPOSE:To employ position matching by means of a dummy pin and a V-pawl according to a coner pin system to accurately install a panel and a mask by a method wherein a V-pawl is released from a panel pin before a pressure-fixed pawl advanced so that it can advance until it sufficiently restores a leaf spring holding piece. CONSTITUTION:The leaf spring holding piece S of a mask M like a turned-over bowl positioned in its installation attitude is pressure-held by a pressure-fixed pawl 18a which advances or retreats on a base. Next, a panel P is placed on the mask M like a crown to hold a panel pin at its installation position by means of a V-pawl rod 12a to adjust the panel P in its installation attitude. Then, the panel P is held at a supporting base to make the rod 12a turn around so that the holding state of the panel pin by means of a V-pawl is released. Next, the pawl 18a is made to advance in the direction of the shaft center of a panel pin so that the bending pressure of the holding piece S may be gradually eliminated and the insertion of the panel pin formed in the holding piece S is fitted to the panel pin to install the mask M on the panel P. It is thereby possible to realize position matching by means of a dummy pin 8a and V-pawl and accurate position matching of the panel P to the mask M.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application In color cathode ray tube manufacturing equipment, a device for mounting a shadow mask (hereinafter simply referred to as a mask) on a panel, which is used to form a fluorescent film of three primary colors on the inner surface of the panel. be.

BACKGROUND ART Conventionally, when a substantially rectangular face-up panel is attached to a substantially square face-up mask, the panel and the mask are attached together on the sides, for example, as disclosed in Japanese Patent Laid-Open No. 157633/1983. Japanese Patent Laid-Open No. 62-296328, which uses the side bottle method as disclosed in the publication No. 62-296328, and attaches each of the four corners of the panel and mask.
A corner pin method as disclosed in Japanese Patent Application No.

The present invention relates to the latter mounting technique using the corner pin method. That is, in the corner bin system, as shown in FIG. A plate spring holding piece S having a fixed upper end and a free lower end is attached to each plate spring holding piece S, and an insertion hole H for a panel pin P' is provided through the free i side of the holding piece S.

When attaching the mask to the panel by inserting the panel pin P' into the panel pin insertion hole H formed through the plate spring holding piece of the mask, as shown in FIG. The free end of the plate spring holding piece S of the mask M adjusted to the wearing posture is pressed and bent to the chain line position by the pushing pin C moving to the left in the same figure, and the mask M
The panel P adjusted to the mounting position by the positioning screw A at the upper position is lowered to the chain line position, the panel P is overlapped with the mask M, and the push pin C is moved back to the solid line position to release the leaf spring. By releasing the bending of the holding piece S, the insertion hole I of the plate spring holding piece S is inserted into the panel pin P', and the mask M is attached to the panel P.

The invention tries to solve i! Issue I The above-mentioned prior art is a method in which the panel and mask are adjusted to the mounting posture in vertically spaced positions, and then the panel and mask are mounted in an overlapping manner. Since the charging positioning with the hole H depends on the positioning of only the panel and the positioning of only the mask, which are performed individually, the relative positioning of the panel pin P' and the charging hole H is not performed. There is a risk that the insertion may become uncertain, and it is troublesome that the positioning pin B must be moved up and down repeatedly to swing the temporary spring holding piece S to ensure that the insertion hole H and panel pin P' are fitted. It was necessary to perform fitting by rocking. As a means to solve such troublesome fitting, as disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 157633/1982,
There is a panel pin positioning means using dummy pins and ■claws.

However, although the means for positioning panel pins using dummy bins and V-claws can be implemented in the side pin mounting method described above, it is difficult to implement in the corner pin mounting method for the following reasons.

That is, when a panel pin P' is set to protrude from the inner peripheral corner of the panel, both sides of the panel converge at the mounting base of the panel pin, so the m side space of the panel pin becomes extremely narrow, and a panel pin insertion hole H is formed. The distance that the crimping claw that presses and bends the leaf spring holding piece can move toward the mounting base of the panel pin in order to release the pressing force and restore the leaf spring holding piece is severely limited, and the panel pin is not supported from below. The position where the holding V-claw can be inserted also becomes closer to the tip of the panel pin.

As a result, as in the conventional side pin method, when the crimp claw is moved forward in the direction of releasing the pressing force while holding the panel pin with the claw, the crimp claw is blocked from advancing by the claw, and the panel pin of the leaf spring holding piece is There is a drawback that the leaf spring holding piece cannot be restored to the position where the panel pin is inserted into the entry hole, and the conventional positioning technique using a dummy bin and claws cannot be adopted in the corner bin mounting method.

Therefore, in the present invention, positioning using a dummy bin and claws can be employed even in the corner bin method, thereby making it possible to securely attach the panel and the mask.

Means for Solving the Problems The present invention employs a positioning means using a dummy bin and a V-claw as a mounting means of the corner bin system. The spring holding piece can be moved forward until it is fully restored, and the panel pin and the panel pin insertion hole of the leaf spring holding piece can be inserted securely. Crimp claws that press and bend the free ends of the leaf spring holding pieces provided at each of the four corners inward, and V claws that align the panel pins with the panel pin insertion holes using the dummy bin as a reference to position the panel in the mounting position. The V-claw rod is mounted rotatably around a horizontal axis on a base having a rod, and the crimp claw is mounted to be movable forward and backward in the axial direction of the panel pin, and the panel is positioned in a mounting position. A support stand for supporting and holding the panel is provided on the above-mentioned base, and furthermore, the above-mentioned stand is disposed at each of the four corners of the panel so as to be slidable in the radial direction.

Operation: The temporary spring holding piece of the bowl-shaped mask positioned in the wearing posture is bent and pressed with the retracting crimp claw, the bowl-shaped panel is placed on the mask, and the panel pin is secured with the claw rod. Hold the panel in the mounting position, adjust the panel to the mounting position, support and hold the lower edge of the panel with a support base, and rotate the claw rod downward.
The state in which the panel pin is held by the claw is released, and then the crimping claw is advanced in the panel pin axis direction to gradually remove the bending pressing force of the leaf spring holding piece, and the panel pin insertion hole provided in the leaf spring holding piece is removed. The mask is attached to the panel by inserting it into the panel pin.

Then, the panel fitted with the mask is carried upward by a suction rod (not shown) and transported to the next coating film forming step.

Embodiment FIG. 1 is a plan view of an embodiment of the panel and mask mounting device using the corner pin method of the present invention. Boat-shaped rotation rods 2a and 2b are arranged, and the pair of boat-shaped rotation rods 2a and 2b are arranged.
Interlocking rods 3a and 3 with one end connected to the tip of each of a and 2b
The other ends of b, 3c, and 3d are sliding members 4a that are guided by guide rails G and slide in the front, back, left, and right directions in the figure.
.

4b, 4c and 4d, each sliding member 4a,
4b, 4c, and 4d are provided with a known mask centering device in which centering roller pins 5, 5, . . . are rotatably provided. That is,
A bowl-shaped mask M (indicated by a phantom line) descends from above, covers the centering device, and is placed on the mask support base, and the boat-shaped rotation rods 2a and 2b rotate to create a sliding member. 4a, 4b, 4c, and 4d expand and move forward,
Centering roller pins 5, 5, . . . press the inner surface of the mask M to move the mask M to the centering position on the support base and center the mask M.

In addition, since the sliding tables 6a, 6b, 6c and 6d of the panel centering device arranged on the front, rear, left and right sides are also well known, a detailed explanation will be omitted. Platform 6a.

The rotatable centering roller pins 7, 7, etc. installed upright on 6b, 6c, and 6d press the outer periphery of the panel from all sides, so that the panel is aligned with the axis O of the substrate 1.
It is centered on.

Furthermore, the dummy pins 8a, 8b, 8c and 8d are
The plate spring holding pieces S are erected on bases 9a, 9b, 9c and 9d that slide in the radial direction with respect to the substrate 1 at the four corners of the mask, respectively, and are attached to the four corners of the outer periphery of the centered mask. The dummy bin is inserted forward into the panel pin insertion hole H to further improve the accuracy of the centered mask wearing posture.
As disclosed in Publication No. 3, it is a panel pin dummy, and after improving the accuracy of the mask wearing posture, it retreats and leaves the panel pin insertion hole H. The pawl (2) is used to precisely align the panel pin P' with the position of the dummy bin.

FIG. 2 is a side view of an embodiment of the present invention disposed at one corner of the panel P and mask M in FIG. 1, and similarly disposed at other corners.

The dummy bin 8a is a gate-shaped frame 10a erected on a base 9a.
A frame 14a is mounted on the upper part of the base frame 14a so as to be movable forward and backward with a cylinder lla, and within the gate shape of the gate-shaped structure frame 10a is a frame 14a supporting a horizontal shaft 13a on which a V-shaped rod 12a is rotatably mounted.
a, and the horizontal shaft 13a is mounted on the axis of the dummy bin 8a, so that when the V-claw rod 12a pivots upward from the solid line position to the chain line position due to the extension operation of the cylinder 15a, the V-claw rod 13a V claw 12a' formed at the tip of 12a
By positioning the V-shaped center of the dummy bin on the axis of the dummy bin, it is possible to improve the alignment accuracy of the dummy bin and the panel pin.

Further, a crimp claw 18a having a bifurcated tip is fixed to the upper part of a crimp claw base 17a that slides along a guide rail 16a on the base 9a by operating a cylinder (not shown), and is attached to an outer corner of the mask M. Press the attached spring plate holding piece S to bend it.

Therefore, to explain the mounting operation of the panel P and the mask M, when the face-down bowl-shaped mask M that has been carried in a suspended state reaches the mounting position, it is lowered, covered with the centering device, and placed on the pedestal on the board 1. The mask is placed, and the centering roller pin 5.5 is expanded to center the mask with the centering axis O as a reference.

Next, the dummy pins 8a to 8d move forward and are inserted into the panel pin insertion holes I of the spring plate holding pieces S provided at the outer peripheral corners of the mask M, thereby accurately positioning the mask M.

Next, the crimping claw 18a moves back to press and bend the free end of the spring plate holding piece S, and the dummy pin 8a moves back outward from the panel lowering position and is removed from the panel pin insertion hole H.

Next, the support base 20a (see Fig. 1), which is raised and lowered by a cylinder 19a erected on the outside of the mask M on the base 9a, is raised to the panel centering device. The periphery of the lower edge of the shaped panel P is supported by the support base 20a, and centering of the panel P is performed using the centering roller pin 7 with the centering axis 0 as a reference.

Then, the V-claw tip 12a' of the V-claw rod 12a pivots upward around the horizontal shaft 13a by the extension operation of the cylinder 15a, and stops and waits at the position shown by the chain line in FIG. 2 on the axis of the dummy bin 8a.

The above-mentioned centered panel P is mounted on the support base 20a.
The panel pin P' protruding from the inner corner of the panel is captured and supported by the V claw 12a' of the V claw rod 12a, so that the cylinder 19a stops descending, and the panel pin P' The axes of the spring plate holding piece S and the panel pin insertion hole tr are made to coincide with each other.

Therefore, even if the V-shaped lever 12a is rotated and lowered around the horizontal axis 13a, the panel P is still held by the support base 20a.
By disengaging the claw 12a' downward, the pressure bonding claw 18a, which presses and bends the leaf spring holding piece S, can move forward from the chain line position without any problem to the solid line position where the pressing force is released.

Therefore, the panel pin insertion hole H of the leaf spring holding piece S is completely inserted into the panel pin P' as shown by the solid line in FIG.
The mask M is securely attached to the panel P.

In addition, when the sizes of the panels and masks have stopped, the base 9a can be moved back and forth in the radial direction relative to the panel corners by rotating the ball screw shaft 21a, as shown in Figures 1 and 2. It can be adjusted by adjusting the The rotation of the ball screw shaft 21a is controlled by a pulse motor 22a.

Note that the number of pulse motors may be halved by intersecting the ball screw shafts diagonally.

Effects of the Invention The present invention is a mounting device using the so-called corner bin method in which a panel and a mask are mounted at the four corners. After the V pawl rod moves downward, the crimp pawl releases the pressing bending force of the plate spring holding piece and moves forward.
The crimp claw can penetrate deeply toward the mounting base of the protruding panel pin, and therefore the V that holds the panel pin
Even if the claws and the crimping claws that press the plate spring holding piece are in the overlapping position at the corner of the panel and mask, the panel pin insertion hole provided through the temporary spring holding piece will not be fully inserted into the panel pin. Since the plate spring holding piece can be pressed and held by the crimping claw, the insertion guidance of the panel pin into the panel pin insertion hole can be accurately performed, and reliable mounting can be achieved.

In addition, the base on which is mounted the V-claw rod with claws, the crimp claw, the support stand, the dummy bin, etc. is arranged so that it can move forward and backward in the radial direction at each of the four corners of the panel and the mask. Even if there is a large or small change in the dimensions of the mask, it can be accommodated by adjusting the forward and backward movement of the base, making it extremely versatile as a multi-tube mounting device.

[Brief explanation of the drawing]

Figures 1 to 4 show embodiments of the present invention, with Figure 1 being an overall plan view and Figure 2 being an elevational view of the main parts of the mounting device at one corner.
Figure 3 is an elevational view explaining the operation of the main part of the crimp claw, Figure 4 is a plan view explaining the operation of the main part of the crimp claw, Figure 5 is a bottom view of the mounting of the corner pin type panel and mask, and Figure 6 is the It is an explanatory diagram of a conventional mounting method using a corner pin method. 8a to 8d...Dummy pins 9a to 9d...Sliding base 12a to 12dV claw rods 12a' to 12d
'-V claws 13a to 13d...horizontal axis 17a to 17
d...Crimping claw base 18a-18d...Crimping claw 20a-20d...Elevating support base Fig. 5 Fig. 6

Claims (2)

[Claims] (1) A panel pin insertion hole provided at the free end side of the leaf spring holding piece whose upper end is attached to each of the four outer corners of the down-bowl-shaped shadow mask is provided protruding from each of the four inner corners of the down-bowl-shaped panel. In a device for mounting a panel on a shadow mask by inserting a panel pin into the shadow mask, a crimping claw that presses and bends the plate spring holding piece of the positioned shadow mask is provided on the base so as to be movable forward and backward, and the plate spring holding piece is also provided. A V-claw rod with a V-claw formed at the tip to position and hold the panel pin in the panel pin insertion hole insertion position of the piece is attached so as to be pivotable around a horizontal axis provided on the base, and the V-claw rod allows the mask to be attached to the position. A mounting device for a panel and a shadow mask in a color cathode ray tube manufacturing device, in which a support for holding a positioned panel in that position is provided on a base so as to be movable up and down. (2) A mounting device for a panel and a shadow mask in a color cathode ray tube manufacturing apparatus according to claim (1), wherein the base is disposed at each of the four corners of the panel so as to be slidable in a radial direction from the center of the panel.