KR20030090107A - Cooling Device for CRT Panel Forming Apparatus - Google Patents

Abstract

PURPOSE: A cooling device for a CRT panel molding apparatus is provided to enhance the quality and the productivity by preventing the deformation of the panel. CONSTITUTION: A cooling device for a CRT panel molding apparatus includes a distribution plate(37), an inflow tube(23), a guide(41), and an air controller(43). The distribution plate(37) is formed at a predetermined position apart from a front molding portion(17). The distribution plate(37) is parallel to the front molding portion(17). A through-hole(39) is formed at a center region of the distribution plate(37) to distribute the cooled air to the inside of a lower mold(15). The inflow tube(23) is connected to the through-hole(39) of the center region of the distribution plate(37) in order to receive and guide the cooled air. The guide(41) is extended to the lower mold(15) along the edges of the distribution plate(37). The air controller(43) is installed at an inner side of the guide(41) in order to control the amount of the cooled air.

Description

Cooling device for cathode ray tube panel forming apparatus {Cooling Device for CRT Panel Forming Apparatus}

The present invention relates to a cooling device for a cathode ray tube panel forming apparatus, and more particularly, to a cathode ray tube panel forming apparatus which can reduce the deformation of a cold forming panel by adjusting the cooling air to be uniformly contacted with the panel to be cold formed. It relates to a cooling device.

Generally, the cathode ray tube panel has a front portion on which an image is displayed and a skirt portion bent along the edge of the front portion.

Such a cathode ray tube panel has a molten glass contained in the lower mold by a press called a plunger when a molten glass material of approximately 1200 ° is provided from the melting furnace in the lower mold having the front forming portion for forming the front portion and the skirt forming portion for forming the skirt portion. By pressurizing the water, the molten glass water provided in the lower mold is molded into a panel having a constant size and shape.

And about 800 ° pressure-molded in the lower mold. Panels having internal and external temperatures are subjected to a cooling process in the cooling device for cathode ray tube panel forming apparatus to have the strength and shape thereof. The cooling process mainly employs a method of cooling the lower mold at the bottom of the lower mold to cool the panel, and a method of spraying cooling air from the upper part of the lower mold to the panel in the lower mold.

In particular, in the case of spraying cooling air toward the panel from the top of the conventional lower mold, as shown in Figure 6, the cooling air flowing through the inlet pipe 111, the panel 101 in the lower mold 115 ) Flows toward the inner side of the front portion. Cooling air flowing toward the inner surface of the front part is spaced apart by a predetermined distance along the circumference of the front molding part 117 and the skirt molding part 119 of the lower mold 115 so as to be parallel to the front molding part 117. The front part of the panel 101 is cooled while being dispersed by the distribution plate 113. In addition, the cooling air in the lower mold 115 is cooled to the outside while being discharged to the outside through a gap between the outer surface of the guide 123, the inner surface of the skirt portion and the shell mold 121 forming the end of the skirt portion, The panel 101 in the mold 115 is cooled.

By the way, in the cooling device for cathode ray tube panel forming apparatus which injects cooling air from the upper part of the conventional lower mold toward the molded panel in the lower mold, the cooling air flowing toward the inner side of the front part of the panel is in the front part. In the space formed by the side plate and the distribution plate and the guide, the dispersion is disturbed by the distribution plate, so that local pressure difference of the cooling air occurs in the space formed by the inner surface of the front part and the distribution plate and the guide, and in particular, the front and skirt portions of the panel The amount of cooling air flowing to the inflection region where the short sides are connected is smaller than the amount of cooling air flowing to the inflection region where the long sides of the panel and the skirt are connected, that is, the cooling air on the inner side of the panel to be cold formed. The flow and amount of the particles act unbiased or unevenly, so that cooling of the panel is not performed uniformly, so that the front part of the panel Excessive deformation occurs in the short side region of the side surface. Accordingly, there is a problem that the defect of the panel to be cold-formed and at the same time affect the subsequent process to lower the productivity.

Accordingly, it is an object of the present invention to provide a cooling device for cathode ray tube panel forming apparatus that can reduce deformation of a panel to be cold formed and improve quality and productivity.

1 is a schematic configuration diagram of a cathode ray tube panel forming apparatus,

2 is a partial cut cross-sectional view of the cooling apparatus according to the present invention,

3 is a partial cross-sectional view of the installation of the lower mold, the dispersion plate and the guide of FIG.

4 is a front view of the dispersion plate and the guide of FIG.

5 is a bottom view of the dispersion plate and the guide of FIG. 2,

6 is a partial cross-sectional view of the installation of the lower mold, the dispersion plate and the guide of the conventional cooling apparatus.

* Explanation of symbols for the main parts of the drawings

1 panel 15 lower mold

17: front molding part 19: skirt molding part

23: inlet pipe 37: dispersion plate

41: guide 43: air conditioner

45: rotation shaft 47: control panel

49: handle portion

In order to achieve the above object, the present invention is a cathode ray tube panel disposed on an upper portion of the lower mold having a front molding portion for forming the front portion of the panel and a skirt molding portion for forming the skirt portion, to cool the molded panel in the lower mold. A cooling apparatus for a molding apparatus, comprising: a dispersion plate formed in parallel with the front molding portion at a predetermined distance, and having a through hole formed in a central region, and dispersing cooling air in the lower mold; An inlet pipe communicating with a through hole in a central region of the distribution plate to guide cooling air into the lower mold; A guide spaced apart along a circumference of the skirt molded part in parallel and extending downward along an edge of the distribution plate; Cooling apparatus for a cathode ray tube panel forming apparatus is rotatably coupled to the inner surface of the guide to adjust the amount of cooling air flowing to the inflection region connected to the distribution plate and the guide. to provide.

Here, the air control unit is preferably disposed opposite to each other on both edges of the long side of the guide.

In addition, the air control unit, and the rotation shaft which is rotatably coupled to each inner surface across the mutually opposite inner surface of the guide; A pair of control plates provided between mutually opposing inner surfaces of said guide and extending laterally opposite each other from the circumference of said rotation shaft; It is provided on one end of the rotation shaft to protrude out of the guide has a handle portion for adjusting the rotation angle of the adjustment plate.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic configuration diagram of a cathode ray tube panel forming apparatus. As shown, the forming apparatus has a column 9 and a turntable 11 which is installed to be rotatable with respect to the column 9.

In the circumferential region of the turntable 11, a plurality of lower molds 15 forming the shape of the panel 1 are stacked, and each of the lower molds 15 is rotated by two pitches. A plurality of stations # 1 to # 11 for forming and cooling 1) are formed.

In the first station, the glass melted from the melting furnace (not shown) is supplied to the lower mold 15 disposed corresponding to each station on the turntable 11, and in the third station, the compression molding apparatus having a press device is a molten glass. The panel 1 is molded by pressurizing water. In the fifth, seventh and ninth stations, a cooling device is provided to cool the panel 1 by spraying cooling air on the inner surface of the panel 1, and in the second, fourth and eleventh stations, the panel is cooled. Natural cooling of (1) is achieved. In the sixth station, the molded and cooled panel 1 is taken out from the lower mold 15, and the taken out panel 1 is transferred to a rare process of annealing the panel by a conveyor (not shown). The eighth and tenth stations pass through the lower mold 15 in an empty state.

During each of these processes, the panel 1 is cooled in the fifth, seventh and ninth stations by the cooling device according to the present invention. The cooling device for cathode ray tube panel forming apparatus according to the present invention, as shown in Figure 2, is installed so that the pedestal 13 and the pedestal 13 is disposed on the turntable (11). An inlet tube 23 for guiding cooling air into the lower mold 15, a dispersion plate 37 provided at one end of the inlet tube 23 to disperse the cooling air introduced into the lower mold 15; The guide 41 extends downward along the edge of the distribution plate 37, and the air adjusting unit 43 adjusts the amount of cooling air flowing into the inflection region to which the distribution plate 37 and the guide 41 are connected.

At the top of the pedestal 13 there is a lower mold 15 having a front molding 17 for molding the front part of the panel 1 and a skirt molding part 19 for molding the skirt part bent along the edge of the front part. It is prepared. The front molded part 17 of the lower mold 15 has a rectangular shape due to the cause that the panel 1 to be molded has an almost rectangular shape. The lower mold 15 is provided with a panel 1 in which a front part and a skirt part are molded.

On the upper side of the lower mold 15, a shell mold 21 for forming an end portion of the skirt portion of the panel 1 is disposed. The shell mold 21 may have a rectangular loop shape and may be selectively disposed on an upper end of the lower mold 15.

On the other hand, one end of the inlet pipe 23 is coupled to the upper end and the bolt of the distribution plate 37 so as to communicate with the inlet through-hole 39 of the distribution plate 37 to be described later. In addition, a cylinder bracket 27 fixed to the support part 25 is provided outside the inlet pipe 23, and the cylinder bracket 27 is driven up and down by the inlet pipe 23 and the distribution plate 37 integrally. An actuator 29 is provided to make it work.

The actuator 29 provided in at least one pair across the inflow pipe 23 has the cylinder main body 31 and the cylinder rod 33 provided so that a length is extended and contractible from the cylinder main body 31. As shown in FIG. The cylinder body 31 is coupled to the cylinder bracket 27, the cylinder rod 33 is coupled to the lifting piece 35 is horizontally coupled to the inlet pipe (23). By the extension and reduction of the length of the cylinder rod 33, the inlet pipe 23 and the distribution plate 37 can be elevated in the vertical direction.

The upper end of the distribution plate 37 is fastened to one end of the inlet pipe 23 by a bolt, and the lower end of the distribution plate 37 is formed on the front face 17 and the skirt 19 of the lower mold 15. A predetermined distance is spaced along the circumference of the parallel to the front molded part 17 is disposed. The lower end of the dispersion plate 37 has a rectangular shape corresponding to the panel 1 to be molded. In addition, an inflow through-hole 39 is formed in the central region of the distribution plate 37 to communicate with the inflow pipe 23.

The guide 41 extending downward from the edge of the lower end of the distribution plate 37 is parallel to the skirt forming portion 19 at a predetermined distance, and the end portion thereof is parallel to the inner surface of the front portion of the panel 1. Are spaced apart.

On the other hand, the opposite side edges of the long side of the guide 41 are disposed to face each other, and flow into the inflection region where the short sides of the dispersion plate 37 and the guide 41 are connected, that is, the respective short side regions of the lower mold 15. A pair of air regulators 43 for adjusting the amount of cooling air are provided.

As shown in FIGS. 3 to 5, the air conditioner 43 rotates across the mutually opposing inner surfaces of the guide 41 and is rotatably coupled to the rotation shaft 45 and the guide 41. It is provided between the inner surface facing each other, and a pair of control plate 47 extending horizontally opposite to each other from the circumference of the rotation shaft 45, and is provided at one end of the rotation shaft 45, the outside of one side of the guide 41 Protruding from the side has a handle portion 49 for adjusting the rotation angle of the adjustment plate 47. The throttle plate 47 has a lower surface of the distribution plate 37 and an inner surface of the guide 41 so that interference with the inner surface of the guide plate 41 and the lower surface of the distribution plate 37 does not occur when the control plate 47 is rotated. There is a predetermined distance from the side.

In addition, a plurality of accommodation grooves 41a formed in recesses at predetermined intervals are provided on the outer surface of the guide 41 facing the handle portion 49 at predetermined rotational angles of the adjustment plate 47. In addition, a through hole 49a is formed at one end of the handle 49 to correspond to the receiving groove 41a of the guide 41, and the handle 49 is guided to the through hole 49a. Pin 51 for fixing to the through). Thus, after the handle 49 is rotated at a predetermined angle, the pin 51 passes through the through hole 49a of the handle 49 and passes through the receiving groove 41a of the guide 41. By accommodating one end of the 51, the handle 49 is fixed to the guide 41 and the control plate 47 maintains a predetermined angle with the front face molding 17 of the lower mold 15. Here, the handle 49 is described as being fixed to the guide 41 by the pin 51, but is not limited to this, the handle may be fixed to the guide by a bolt.

Therefore, the cooling air flowing into the lower mold 15 increases the pressure of the cooling air in the space formed by the inner surface of the front part, the distribution plate 37 and the guide 41 and is dispersed and disturbed by the distribution plate 37. The control plate 47 of the air conditioner 43 separates and flows toward the central region, each long side region and each short side region of the lower mold 15. At this time, the amount of cooling air flowing toward the short side region of the lower mold 15 can be adjusted according to the rotation angle of the control plate 47.

By this configuration, when molten glass of approximately 1200 ° is provided from the melting furnace not shown in the lower mold 15, by pressing the molten glass contained in the lower mold 15 with a press called a plunger (not shown), The molten glass material provided in the lower mold 15 is formed into a panel 1 having a constant size and shape, and a cooling process is performed by the cooling device according to the present invention.

When the working fluid is supplied to the cylinder body 31 of the cooling apparatus to extend the cylinder rod 33 in accordance with the performance of the cooling process, the inlet pipe 23, the distribution plate 37 and the guide 43 are cylinder rods. It moves downward along the movement length of 33. As shown in FIG.

When the distribution plate 37 is disposed above the lower mold 15 and at a predetermined position, cooling air is supplied to the inlet pipe 23 through the cooling air supply unit (not shown). Cooling air flowing from the inlet pipe 23 is increased in the space formed by the inner surface of the front portion and the distribution plate 37 and the guide 41 and dispersed and disturbed by the distribution plate 37, the air conditioner 43 Part of the cooling air flows toward the central region and each long side region of the front part of the panel 1 in the lower mold 15, and the rest of the cooling air is the inner surface of the guide 41. As a result, the inner surface of the front part of the panel 1 is cooled by flowing to the inflection area where the short sides of the front part of the panel 1 and the skirt part are connected, that is, the respective short side areas of the front part of the panel 1.

And the cooling air which cooled the front part of the panel 1 is discharged outside along the inner side of a skirt part, and cooling the skirt part, and the panel 1 in the lower mold 15 is cooled.

Next, the panel 1 in which the cooling molding is completed in the molding apparatus is taken out from the molding apparatus and transferred to a rare process, which is a subsequent process, by a conveyor (not shown).

On the other hand, before the panel 1 is transferred to the rare process, the deformation of the inner surface of the panel 1 which is cold-formed by the molding apparatus with the naked eye or a camera is checked. At this time, when the deformation of the inner surface of the panel 1 is out of a predetermined range, that is, the amount of cooling air flowing to each short side region of the panel 1 to be cold-formed as an example is the central region of the panel 1 and If excessive deformation occurs in the short side area of the inner side of the front panel of the panel 1 because the cooling of the panel 1 is not performed uniformly or unevenly compared to the amount of cooling air flowing into each long side area, By adjusting the rotation angle of the control plate 47 of the air conditioner 43 of the cooling device so that the amount of cooling air flowing to the center region, each long side region, and the short side region of the panel 1 is uniform for the panel being cooled by Cooling air is uniformly contacted with the inner surface of the front part of the panel 1 to reduce the deformation of the panel 1.

As such, by adjusting the cooling air to be uniformly in contact with the panel to be cold-formed, it is possible to reduce deformation of the panel to be cold-formed and to improve quality and productivity.

On the other hand, in the above-described embodiment, it is described that a pair of air regulators are provided at both edges of the long side of the guide, but not limited to this, a pair of air regulators are provided at both edges of the short side of the guide to provide the It is also possible to adjust the amount of cooling air flowing into the inflection zone where each long side is connected.

As described above, according to the present invention, there is provided a cooling device for a cathode ray tube panel molding apparatus that can reduce deformation of a panel to be cold-formed and improve quality and productivity.

Claims (3)

In the cooling device for cathode ray tube panel forming apparatus which is arrange | positioned on the upper part of the lower mold which has the front-side shaping | molding part which forms the front part of a panel, and the skirt shaping | molding part which forms a skirt part, and cools the molded panel in the said lower mold, A dispersion plate in which a through hole is formed in a central area in parallel with the front molding part and spaced apart from the front molding part, and the dispersion plate disperses cooling air in the lower mold; An inlet pipe communicating with a through hole in a central region of the distribution plate to guide cooling air into the lower mold; A guide spaced apart along a circumference of the skirt molded part in parallel and extending downward along an edge of the distribution plate; And an air conditioner rotatably coupled to an opposite inner surface of the guide to adjust an amount of cooling air flowing into the inflection region where the distribution plate and the guide are connected. The method of claim 1, The air conditioning unit is a cooling device for a cathode ray tube panel forming apparatus, characterized in that disposed on opposite sides of the long side of the guide. The method according to claim 1 or 2, The air control unit, A rotating shaft that is rotatably coupled to each inner surface and intersecting between mutually opposite inner surfaces of the guide; A pair of control plates provided between mutually opposing inner surfaces of said guide and extending laterally opposite each other from the circumference of said rotation shaft; Cooling device for cathode ray tube panel forming apparatus provided on one end of the rotating shaft comprises a handle portion protruding out of the guide to adjust the rotation angle of the control plate.