KR100286759B1 - Elastic Pin Pressing Mechanism for Panel Pin Fastening - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

Elastic piece pressing mechanism for fastening the panel pins used in the device for mounting the shadow mask

2. The technical problem to be solved by the invention

In order to provide an elastic piece pressing mechanism for fastening the panel pins that can increase the rigidity and strength of the pressing nail body and at the same time can be made compact, and also ensures that the shadow mask is mounted on the panel. do.

3. Summary of Solution to Invention

An engagement recess 14B for positioning the panel P in engagement with the panel pin P of the panel corner portion of the CRT is formed on the upper surface, and a through hole 14C is formed below the engagement recess. The positioning nail body 14A, which protrudes from the inside of the penetrating hole, and is pressed against the panel pin engaging elastic piece S of the corner portion of the outer surface of the shadow mask M, and immersed in the penetrating hole to engage the panel pin. When opening the elastic piece (S), using the return deformation caused by the elasticity of the elastic piece (S) for panel pin engagement, the pressing force to hook the panel pin (P) into the hole (H) for the panel pin hooking. 15 A of integral parts are provided.

4. Important uses of the invention

Used in the manufacture of CRT

Description

Elastic Pin Pressing Mechanism for Panel Pin Fastening

The present invention relates to an elastic piece pressing mechanism for engaging panel pins, which is used in an apparatus for attaching a shadow mask to a panel of a cathode ray tube in which panel pins are arranged at corners.

In the conventional color-brown tube manufacturing process, a mesh-shaped shadow mask is mounted on the inside of the CRT panel, and three primary colors of photosensitive paint are applied one by one, and a shadow mask is mounted on the panel for each color to be applied. have.

In the shadow mask mounting operation, for example, a shadow mask mounting apparatus as described in Japanese Patent Application Laid-Open No. 4-77411 is used, and in this apparatus, protrusions are respectively provided at the inner central portions of the four sides of the panel. The shadow mask is positioned and mounted at a predetermined position in the panel by hooking the panel pins into the panel pin engaging holes of the elastic pieces respectively provided on the outer sides of the four sides of the shadow mask.

In the above apparatus, four sets of nail nails and a V nail body advancing and retreating side by side integrally are provided. When the shadow mask is mounted on the panel, the four sides of the shadow mask are positioned. Press and hold the nailing bodies to each of the elastic pieces installed, and then hold the V-grooves formed on the upper surface of the V-nail body from below from each panel pin of the panel supplied above the shadow mask. After positioning the panel on the shadow mask, by using the return deformation caused by elasticity of the elastic piece by separating these pressing nail bodies from each elastic piece, the hooking hole of the elastic piece is engaged with the panel pin. The shadow mask is mounted in the panel.

In recent years, it has been enlarged in accordance with high-definition of color brown tube, hi-vision, etc. In order to cope with this in the manufacturing process of the CRT, panel pins are installed at the corners of the inner surface of the panel and the corners of the shadow mask outer surface facing the panel pins In the structure which arrange | positions an elastic piece in a part, and has the structure which parallelly applies a pressing nail body and a V nail body as described in the said Unexamined-Japanese-Patent No. 4-77411, a panel and It is difficult to intrude the nail body and the V nail body into the narrow spaces of both corner portions of the shadow mask.

Therefore, as an apparatus for attaching a shadow mask to a panel having panel pins arranged at the corners as described above, it is disclosed in Japanese Patent Laid-Open No. 4-209436 or Japanese Patent Laid-Open No. 6-275192. Similarly, a narrow press nail body is provided on both sides of the V nail body, or as described in Japanese Patent Laid-Open No. 62-296328, the V nail body is removed and the panel is positioned and held from the outside. It is proposed.

However, in the structure in which narrow press nail bodies are provided on both sides of the V nail body, the press nail bodies are thin and long vertically, and in fact, can only take a width of about 1 mm, while pressing the elastic pieces of the shadow mask. There is a risk of falling from the elastic piece. In addition, since the pressing nail body requires a certain degree of strength and rigidity, it is necessary to increase the thickness by narrowing the width. When increasing the thickness, the pressing nail body is pressed on the corner of the panel when covering the panel from the upper side of the shadow mask. There is a problem that all of them collide, and there is a problem that sufficient strength and rigidity cannot be secured.

On the other hand, in the case where the panel is positioned and held from the outside while the V nail body is removed, the outside of the panel is positioned, so that accurate positioning can be performed when the protrusion position of the panel pin is out of position due to manufacturing error. There is a problem of disappearing.

Therefore, the present invention solves the problems of the prior art as described above, can increase the stiffness and strength of the pressed nail body, and can be made compact, and also ensures the operation of attaching the shadow mask to the panel. An object of the present invention is to provide an elastic piece pressing mechanism for engaging a panel pin.

1 is a plan view showing the arrangement of the panel pin fastening elastic piece pressing device of the present invention on a mask mounting apparatus;

FIG. 2 is a longitudinal sectional view seen in the direction of the arrow in the position A-A of FIG. 1,

3 is a side view of the elastic piece pressing mechanism for engaging the panel pin of the present invention;

4 is a plan view of the elastic piece pressing mechanism for engaging the panel pin of the present invention;

5 is a side view of the main portion of the elastic piece pressing mechanism for engaging the panel pin of the present invention;

6 is a front view of the main portion of the elastic piece pressing mechanism for engaging the panel pin of the present invention.

<Explanation of symbols for main parts of drawing>

1: shadow mask mounting device 2: mask support

3: centering mechanism 4: elastic piece pressing mechanism for panel pin fitting

5: body frame 6: lifting frame

7,11: guide 8: movable frame

8A: Bracket 9: Fixing frame

10, 13, 17A, 19: Air cylinder 12: additional copper frame

14: positioning nail foundation 14A: positioning nail body

14B: engaging recess 14C: through hole

15: press nail base 15A: press nail body

16: movable table 17: centering

18: Panel positioning arm M: Shadow mask

S: Elastic piece for panel pin fastening T: Panel

P: panel pin H: hole for panel pin

For this purpose, in the panel pin fastening elastic piece pressing mechanism of the present invention, the engaging recess for positioning the panel by engaging with the panel pin protruding from the corner of the panel inner surface of the CRT is formed on the upper surface. And a positioning nail body having a permeation hole formed below the engaging concave portion, and a panel pin engaged with the shadow mask outer surface at a position protruding from the permeation hole and protruding from the permeation hole. The panel pin is pressed into the panel pin engaging hole formed in the panel pin fastening elastic piece by using the return deformation caused by the elasticity of the panel pin fastening elastic piece by being pressed against the elastic piece for fastening. It is equipped with the push nail body to put in.

In the state where the shadow mask is positioned so that the panel pin engaging elastic piece disposed at the corner of the shadow mask outer surface is at a predetermined position, the pressed nail body is projected from the penetrating hole of the positioning nail body, and the panel Press it onto the elastic piece for pin engagement.

Subsequently, the panel is supplied over the shadow mask, and the pressing nail body is raised together with the positioning nail body while pressing the pressing nail body against the elastic piece for fastening the panel pin, and the hook formed on the upper surface of the positioning nail body. The panel is positioned by engaging the fitting recess with the panel pin protruding from the corner of the inner surface of the panel. Thereafter, while the engaging nail of the positioning nail body is engaged with the panel pin and the pressing nail body is immersed in the penetrating hole of the positioning nail body, the elastic piece for panel pin engagement is deformed by its elasticity. do.

At this time, since the panel pin engaging hole formed in the panel pin fastening elastic piece is positioned at a position facing the panel pin, the panel pin fastening is caused by the return deformation of the panel pin fastening elastic piece. Panel pins are hooked into the holes, and shadow masks are mounted on the panels.

EXAMPLE

EMBODIMENT OF THE INVENTION Hereinafter, one Example of this invention is described based on drawing. 1 is a plan view showing the arrangement state of the panel pin engaging elastic piece pressing mechanism of the present invention attached to the shadow mask mounting apparatus, FIG. 2 is a longitudinal sectional view seen from the arrow direction in the AA position, In these drawings, although the shadow mask mounting apparatus 1 itself has abbreviate | omitted the detail, it is substantially the same structure as what was disclosed by Unexamined-Japanese-Patent No. 4-77411 mentioned above.

The shadow mask M is carried in on the four mask supporters 2 which are driven up and down synchronously in the shadow mask mounting apparatus 1. In addition, with respect to the shadow mask M placed on the mask supporter 2, the centering machine 3 omitted and shown in FIG. 2 from the lower side enters inward, and the shadow mask M The position is corrected and the panel pin engaging hole formed in the panel pin engaging elastic piece (not shown) provided on the outer surface of the corner portion of the shadow mask M is positioned so as to face in a predetermined direction. It is. As the centering mechanism 3, one having a structure disclosed in Japanese Patent Application Laid-Open No. 4-77411 can be used.

In the shadow mask mounting apparatus 1, the panel pin engaging elastic piece pressing mechanism 4 of the present invention surrounds the centering mechanism 3 and corresponds to four corner portions of the shadow mask M, respectively. There are 4 sets to be installed. The four panel pin fastening elastic piece pressing mechanism 4 includes the centering mechanism 3 and the centering mechanism 3 which are lifted and supported freely by the main frame 5 of the shadow mask mounting apparatus 1. Attached together.

As shown in FIGS. 3 and 4, the panel pin fastening elastic piece pressing mechanism 4 is diagonal to the elevating frame 6 to a fixing frame 9 fixed on the elevating frame 6. It has a movable frame 8 in which advancing and retreat is supported freely along the guide 7 arrange | positioned in the direction, The said movable frame 8 is moved forward and backward by the air cylinder 10 provided in the fixed frame 9. It is supposed to be driven.

Moreover, on the movable frame 8, the guide 11 is arrange | positioned in the same direction as the advancing direction, The adjoining frame 12 is supported by the said guide 11 freely. The additional moving frame 12 is driven forward and backward by an air cylinder 13 provided in the movable frame 8.

In the movable frame 8, the positioning nail base portion 14, in which the positioning nail body 14A is formed at the upper end portion through the bracket 8A, is freely screwed to adjust the attachment position in the vertical direction. Moreover, the nail base part 15 which has 15A of nail nails pressed by the front end is being fixed to the said additional copper frame 12. As shown in FIG.

As shown in FIG. 5 and FIG. 6, on the upper surface of the positioning nail body 14A, a semicircular engaging recess for engaging with the panel pin P and for positioning the panel T ( 14B) is formed, and below the engagement recessed portion 14B, 14C of rectangular vertically extending holes are formed. The penetrating hole 14C has a length and a width for accommodating the pressing nail body 15A formed in the upper portion of the pressing nail base portion 15 therein, as shown in FIGS. 3 and 4. By actuating the air cylinder 13 shown, it is comprised so that the pressed nail body 15A may protrude from the said through hole 14C toward the inside of the positioning nail body 14A.

On the other hand, as shown in FIGS. 1 and 2, the main body frame 5 of the shadow mask mounting apparatus 1 corresponds to the four panel pin fastening elastic piece pressing mechanisms 4 described above. The movable base 16 is supported freely in the diagonal direction at each outer position.

Each of the movable tables 16 is provided with a centering pin 17 which is free to emerge in a diagonal direction by the air cylinder 17A, and is positioned on the mask support 2 by the centering mechanism 3. The centering pin 17 is hooked in all directions to the panel pin engaging hole formed in the panel pin engaging elastic piece of the shadow mask M to precisely position the shadow mask M. I'm trying to.

In addition, the rotational arm 18 is freely oscillated on three of the movable tables 16 above the centering pin 17. The rotary arm 18 has a panel pin guide groove, not shown at the front end, as disclosed in Japanese Patent Application Laid-Open No. 4-77411, and is located outside the center ring pin 17. The air cylinder 19 is rocked at the position swinging downward and the position swinging upward.

The front end of the rotary motion arm 18 is formed in a hook shape so as to face in a substantially vertical direction at a position swinging inwardly upwards, and the panel is carried upwards of the shadow mask M to support the panel (not shown). When supported by the member, the panel pin guide groove is engaged with the panel pin so that the panel supported by the support member is positioned at a predetermined position.

Next, the operation of attaching the shadow mask to the panel by the above-mentioned shadow mask mounting apparatus 1 will be described. In FIG. 1 and FIG. 2, the shadow mask M is carried in to the shadow mask mounting apparatus 1 by the conveying apparatus or attraction which has an adsorption | suction holding | gripping tool, etc., and is mounted on the mask supporter 2, FIG. Lose. Subsequently, the mask supporter 2 descends to the position of the centering mechanism 3, and the centering mechanism 3 intrudes from the lower side of the shadow mask M to the inside thereof to perform the centering operation, thereby causing the shadow mask M Preliminary positioning of

Further, the movable table 16 is positioned in the diagonal direction of the shadow mask M in accordance with the size of the shadow mask M, and the centering pin 17 is diagonally centered by the air cylinder 17A. It protrudes toward a side, it hangs in the panel pin engaging hole formed in each panel pin engaging elastic piece of the shadow mask M, and the shadow mask M is precisely located.

Next, after adjusting the position of the movable frame 8 shown to FIG. 3 and FIG. 4 with the air cylinder 10 in the position suitable for the size of the shadow mask M, it raises and lowers from the position shown in FIG. The frame 6 is raised and the engaging recess 14B of the positioning nail body 14 shown in FIGS. 5 and 6 is engaged with the centering pin 17 from below.

At this position, when the pressing nail body 15A projects inward from the through hole 14C of the positioning nail body 14A by the air cylinder 13 shown in FIG. 3, the positioning nail body 14A ) Is pressed against each panel pin fastening elastic piece of the shadow mask M, and the panel pin fastening elastic piece pressed by the positioning nail body 14A is elastically deformed so that the centering pin 17 is the panel pin. It exits from the hole to which it is hooked, and is hold | maintained by the pushing nail body 15A. The centering pin 17 is retracted to the original position by the air cylinder 17A after the pressing nail body 15A holds the elastic pieces for panel pin engagement.

On the other hand, at this point in time, the panel on which the shadow mask M is mounted is provided on the panel support member disposed above the shadow mask M by a conveying apparatus not shown in FIGS. 1 and 2. The rotary motion arm 18, which is carried on the top and is disposed above the three centering pins 17, swings upward in the air cylinder 19, and the panel pin guide grooves formed at the front end thereof are In alignment with the panel pins, positioning of the panel is performed. After the positioning operation, the rotary arm 18 swings downward again to return to its original position. In addition, the use of four rotary motion arms 18 is to avoid the mounting error of panel pins, and only two rotary motion arms 18 may be used to face diagonally.

Next, when raising and lowering the lifting frame 6, the shadow mask M, as shown in Figs. 5 and 6, the panel pin engaging elastic piece S by the pressing nail body 15A. The engagement recessed portion 14B of the positioning nail body 14A which rises in the state held through, penetrates from the bottom into the inside of the panel T, and rises together with the pressing nail body 15A is formed. It engages with the panel pin P of (T), and is positioned so that the engagement hole H of the elastic piece S for panel pin engagement may correspond exactly. In addition, in this embodiment, the engaging recess 14B to be engaged with the panel pin P is formed in a semicircle so as to conform to the contour of the outer circumferential surface of the panel pin P. You may form.

After the positioning is completed, the pressing nail body 15A is immersed in the penetrating hole 14C of the positioning nail body 14A, and the panel pin fastening elastic piece S is opened. The engagement elastic piece S is deformed by its elasticity, and the panel pin P is hooked into the hole H to which the panel pin is hooked, and the shadow mask M is fixed to the panel T. As shown in FIG. The panel T on which the shadow mask M is mounted is carried out by the conveying apparatus not shown from the shadow mask mounting apparatus 1 to the next process.

As explained above, according to the panel pin fastening elastic piece pressing mechanism of this invention, a press nail body is arrange | positioned in the permeation hole formed below the engagement recess of the positioning nail body, and the said transmission hole Since the width of the press-fit nail body can be secured sufficiently, even if the thickness is made thin, sufficient rigidity and strength can be obtained by pressing on the elastic pin for panel pin engagement to maintain the shadow mask. As a result, it is possible to reduce the size of the pressed nail body and the positioning nail body easily in a narrow space between the corner portions of both the panel and the shadow mask, and to improve the durability.

In addition, since the press-fit nail body presses the panel pin fastening elastic piece under the panel pin to maintain the shadow mask, the press-fit nail body may come off or fall out of the contact position with the panel pin fastening elastic piece. There is no concern, and a shadow mask can be reliably attached to a panel.

Claims (1)

A positioning nail body formed at an upper surface thereof with an engaging recess for positioning the panel by engaging with a panel pin protruding from a corner portion of the inner surface of the CRT, and having a through hole formed below the engaging recess; The panel pins are engaged with each other by being pushed out of the through-holes and pressing the panel pin engaging elastic pieces arranged at the corners of the shadow mask outer surface at the position protruding from the through-holes. A panel pin fastening elastic piece comprising a pressing nail body for fastening the panel pin to a panel pin fastening hole formed in the panel pin fastening elastic piece by using the elastic deformation of the elastic piece. Pressing mechanism.

Images