KR20030090108A - 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 and reduce the deformation of the panel. CONSTITUTION: A cooling device for a CRT panel molding apparatus includes a distribution plate(37), an aperture controller(45), an inflow tube(23), and a guide(41). The distribution plate(37) is formed at a predetermined position apart from a front molding portion(17) to distribute the cooled air to the inside or the outside of a lower mold(15). 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 the lower mold(15). An aperture(43) is formed at a predetermined position apart from the through-hole(39). The aperture controller is installed at the distribution plate(37) in order to control an aperture ratio. 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).

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 cooling device for a cathode ray tube panel molding apparatus that can reduce deformation of a panel to be cold formed.

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 upper portion 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 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 a local pressure difference is generated. The pressure change occurs to deepen the internal deformation of the panel, and also the panel is not cooled uniformly, resulting in excessive deformation of the panel. 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 plan view of the dispersion plate and the guide of FIG.

5 is a cross-sectional view taken along the line VV of FIG. 4,

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: opening

45: opening control unit

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. In the cooling device for a molding apparatus, a through hole is formed in the center area in parallel with a predetermined distance spaced apart from the front molding portion, and has at least one opening spaced apart a predetermined distance from the periphery of the through hole, the lower portion A dispersion plate for dispersing cooling air introduced into a mold into and into the lower mold; An opening adjustment part provided on the distribution plate to adjust an opening degree of the opening; An inlet pipe communicating with a through hole in a central region of the distribution plate to guide cooling air into the lower mold; It provides a cooling device for a cathode ray tube panel forming apparatus, characterized in that it comprises a guide spaced apart along a circumference of the skirt molding portion parallel to each other and extending downward along the edge of the distribution plate.

Here, the openings have a rectangular cross-sectional shape and are disposed to face each other so as to be parallel to each short side of the distribution plate, and the opening adjustment unit moves along the long side of the distribution plate and adjusts the opening degree of the opening. .

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 Fig. 2, is installed so that the pedestal (13) disposed on the turntable (11) and the pedestal (13) can be lifted. And the inlet pipe 23 for guiding the cooling air into the lower mold 15 and the cooling air introduced into the lower mold 15 into one end of the inlet pipe 23 to the inside and outside of the lower mold 15. A dispersion plate 37 to be dispersed and a guide 41 extending downward along the edge of the dispersion plate 37 are provided.

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.

3 to 5, a pair of openings 43 are provided at the lower end of the distribution plate 37 so as to face each other at a predetermined distance from the circumference of the inflow through hole 39. . The opening 43 has a rectangular cross-sectional shape, and each long side of the opening 43 is parallel to each short side of the dispersion plate 37.

On the other hand, the plurality of receiving grooves 37a formed on the upper surface of the lower end of the dispersion plate 37 are spaced a predetermined distance from the edge of each short side of the opening 43 and are recessed at predetermined intervals along the short side of the opening 43. It is prepared.

On the upper surface of the lower end of the dispersion plate 37, a pair of opening adjustment parts 45 are provided to move along the long side of the dispersion plate 37 and to adjust the opening degree of each opening 43. The opening adjustment part 45 is formed in a plate shape and has a rectangular cross-sectional shape to enable the opening 43 to be closed. In addition, a pair of through holes 45a are formed at each short side of the opening adjusting part 45 to correspond to the receiving groove 37a of the distribution plate 37, and the opening adjusting part 45 is formed in each through hole 45a. ) And the pin 47 for fixing to the dispersion plate 37 is penetrated through. As a result, the opening adjusting part 45 is moved along the long side of the dispersion plate 37 so that the opening 43 has a predetermined opening degree, and then the pin 47 is inserted into the through hole 45a of the opening adjusting part 45. The opening adjustment part 45 is fixed to the distribution plate 37 by penetrating through and receiving one end of the pin 47 penetrated in the receiving groove 37a of the distribution plate 37. Here, the opening adjusting part 45 is described as being fixed to the distribution plate 37 by the pin 47, but not limited to this, the opening control part may be fixed to the distribution plate by bolts.

On the other hand, the guide 41 extending downward from the edge of the lower end of the dispersion plate 37 is parallel and spaced apart by a predetermined distance along the circumference of the skirt forming portion 19, the end portion of the inner surface of the front portion of the panel (1) And a predetermined distance apart.

As a result, the cooling air flowing into the lower mold 15 is dispersed and disturbed by the dispersion plate 37 in the space formed by the inner surface of the front part, the dispersion plate 37, and the guide 41, and then into the interior of the lower mold 15. At the same time as it flows, it is discharged to the outside of the lower mold 15 through the opening 43, and the pressure of the cooling air is equalized in the space formed by the inner surface of the front part, the distribution plate 37, and the guide 41. Cooling air is uniformly in contact with the inner surface of the front portion of the) to reduce the internal deformation of the panel (1).

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 disturbed by the dispersion plate 37 in the space formed between the inner surface of the front portion, the dispersion plate 37 and the guide 41, and a part of the cooling air is lowered in the lower mold 15 2) flows toward the front part of the panel 1, and the rest of the cooling air is discharged to the outside of the lower mold 15 through the opening 43 of the distribution plate 37.

And the cooling air which cooled the front part of the panel 1 is discharged to the exterior along the inner surface of the skirt part, and by cooling the skirt part, 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, as an example, in the space formed by the inner surface of the front part of the panel 1 to be cold-formed and the dispersion plate 37 and the guide 41. As the cooling air is dispersed and disturbed by the dispersion plate 37, a local pressure difference occurs, and the flow and quantity of the cooling air are in uneven or non-uniform contact with the inner surface of the front part of the panel 1 so that the cooling of the panel 1 is constant. If the deformation of the panel 1 occurs excessively due to failure to perform it, cooling is performed in the space formed by the inner surface of the front part, the distribution plate 37 and the guide 41 for the panel 1 being cooled in the molding apparatus. By adjusting the opening 43 of the cooling apparatus to a predetermined opening degree so that the pressure of the air is uniform, the cooling air is uniformly contacted with the inner surface of the front part of the panel 1 to prevent deformation of the panel 1. .

In this way, a part of the cooling air in the space formed between the inner surface of the front part and the distribution plate and the guide is discharged to the outside of the lower mold by controlling the opening degree of the opening so that the pressure of the cooling air acting on the panel is made uniform. Reduce panel deformation and improve quality and productivity.

On the other hand, in the above-described embodiment, although the openings are disposed to face each other to be parallel to each short side of the distribution plate, it is described that the opening degree of the opening is adjusted by the opening adjustment unit, but is not limited to each long side of the distribution plate. It is also possible to adjust the amount of cooling air discharged to the outside of the lower mold by providing the openings which are arranged to be parallel to each other so as to be parallel to each other by adjusting the opening degree of the opening.

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 (2)

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 through hole is formed in a central area in parallel with a spaced distance from the front molding part, and has at least one opening spaced apart from a circumference of the through hole by a predetermined distance, and the cooling air introduced into the lower mold. A dispersion plate for dispersing into and out of the lower mold; An opening adjustment part provided on the distribution plate to adjust an opening degree of the opening; An inlet pipe communicating with a through hole in a central region of the distribution plate to guide cooling air into the lower mold; Cooling apparatus for a cathode ray tube panel forming apparatus, characterized in that it comprises a guide spaced apart along a circumference of the skirt forming part parallel to the parallel and extending downward along the edge of the distribution plate. The method of claim 1, The openings have a rectangular cross-sectional shape and are disposed to face each other so as to be parallel to each short side of the distribution plate, and the opening control unit moves along the long side of the distribution plate and adjusts the opening degree of the opening. Chiller for tube panel forming machine.