KR200348857Y1 - Mold device for forming apparatus of crt glass - Google Patents

Abstract

The present invention relates to a molding apparatus for glassware forming equipment having a lower mold which interacts with a liftable plunger to form a glass article for cathode ray tube, wherein the bottom surface of the lower mold is formed from the periphery of the remaining region except for the corner region of the lower mold. At least one air deflector spaced apart from the projecting surface is provided. Thereby, the mold apparatus for the glassware forming equipment which can cool the lower mold as a whole uniformly improves the cooling efficiency of a lower mold, and can prevent a deformation | transformation of a product.

Description

MOLD DEVICE FOR FORMING APPARATUS OF CRT GLASS}

The present invention relates to a mold apparatus for a glass product molding facility, and more particularly, to a mold apparatus for a glass product molding facility to improve the cooling efficiency of the lower mold.

In general, a cathode ray tube is provided at the front to project an image, and a funnel (hereinafter referred to as a glass product) that is coupled to the rear of the panel in a funnel shape in which a nose part is formed is melted by heating a raw material of glass in a melting furnace. It is molded by creating a state and applying it to a molding apparatus.

FIG. 5 is an enlarged cross-sectional view of a lower mold peripheral region for forming an outer surface of the glass article, and details thereof will be described below with reference to FIGS. 2 and 3, and here, the present invention is limited to a brief structure and problems thereof. Explain. As shown in this figure, the molding equipment for the glass tube for cathode ray tube is a rotatable disk-shaped turntable 112, and a plurality of lower molds 118 formed in the circumferential direction of the turntable 112 to form the outer surface of the glass article. ), A shell mold 122 selectively stacked on the lower mold 118 to form a bonded end surface of the glass product, and a plunger (not shown) for pressing the molten glass provided on the lower mold 118. .

The lower mold 118 has a rectangular shape having a long side and a short side, and is supported on the turntable 112 by a plurality of pedestals 125, and has an upper end of the turntable 112 on which the lower mold 118 is disposed. A predetermined air discharge port 123 is provided. Accordingly, when the molten glass material is introduced into the lower mold 118, the shell mold 122 is laminated to the upper end of the lower mold 118. After that, the molten glass material is pressed by pressing the molten glass material while the plunger is lowered. The silver can be molded into glass in the lower mold 118 and the shell mold 122. As such, when the molding of the glass product is completed, predetermined cooling air is introduced into the air duct 114 in the turntable 112 and sprayed to the bottom surface of the lower mold 118 through the air discharge port 123, thereby lowering the mold 118. In addition to appropriately cooling the molded glass product in the) it will prevent overheating of the lower mold 118 itself.

By the way, in the conventional mold apparatus for glassware forming equipment, cooling air injected from the air duct toward the lower mold cools the lower mold while spreading circumferentially from the center region of the bottom surface of the lower mold, and the short side of the lower mold. And because the thickness of the edge region where the long sides intersect is thicker than the thickness of the other region, high temperature is generated. Severely occurring, it is not possible to realize a uniform cooling of the glass product, there is a problem that causes deformation in the glass product to be cooled.

Accordingly, it is an object of the present invention to provide a mold apparatus for a glass product forming facility that can uniformly cool the lower mold as a whole to improve the cooling efficiency of the lower mold and prevent deformation of the product.

1 is a view schematically showing a glassware forming facility according to the present invention,

2 is a side view of FIG. 1;

3 is an enlarged cross-sectional view of the lower mold region of FIG.

4 is a rear perspective view of the lower mold according to the present invention;

5 is a cross-sectional view of a portion of a conventional lower mold peripheral region corresponding to FIG. 3.

* Explanation of symbols for the main parts of the drawings

10: column 12: turntable

18: lower mold 21: air deflector

22: shell mold 23: air outlet

27: outer basket 35: inner basket

In order to achieve the above object, the present invention, in the mold apparatus for glassware forming equipment having a lower mold for interacting with a liftable plunger to form a glass article for cathode ray tube, the bottom surface of the lower mold at the edge of the lower mold Provided is a mold apparatus for forming a glassware, characterized in that at least one air deflector projecting from the plate surface spaced apart from the circumference of the remaining region except for the region.

Herein, the air deflectors may be spaced in parallel with respect to the circumference of the lower mold.

Hereinafter, with reference to the accompanying drawings will be described in detail for the subject innovation.

As shown in FIG. 1, a molding facility for a glass product for a cathode ray tube has a column 10 and a disk-shaped turntable 12 rotatably disposed about the column 10, the periphery of the turntable 12. In the direction, lower molds 18, which constitute a plurality of stations (# 1 to # 11) for forming, cooling, and taking out a glass product, are placed on the edge thereof. In addition, a plurality of shell molds 22 are disposed on the upper part of the turntable 12 to selectively form the upper part of the lower molds 18 to form a glass product together with a plunger (not shown).

In the first station, the molten gob is provided in the lower mold 18 arranged to correspond to each station. In the third station, the shell mold 22 is stacked on the lower mold 18 and then referred to as a plunger. The press apparatus presses the gobs provided in the lower mold 18 to form a glass product. At this time, the shell mold 22, which is placed on the lower mold 18 to form the upper region of the glass product, is again moved by a separate transfer device to be disposed on the lower mold 18 in the next position.

In the fifth, seventh and ninth stations, cooling air is injected into the lower mold 18 to cool the lower mold 18 to cool the lower mold 18 to cool the molded glass product. In the station, the lower mold 18 is naturally cooled. In the sixth station, the molded and cooled glass products are taken out from the lower mold 18 and transferred to the post process. In the eighth and tenth stations, the lower mold 18 passes in an empty state. This process forms a continuous mechanism for each step by rotation of the turntable 12.

As shown in FIGS. 2 and 3, the turntable 12 is formed with an air discharge port 23 upwardly opened so that cooling air flowing in the lower mold air duct 14 to be described later is discharged. In the upper region of the air discharge port 23, lower molds 18 constituting a plurality of stations are stacked by the pedestal 25.

The bottom surface 20 of the lower mold 18 has a rectangular shape having a long side and a short side, and a plurality of air deflectors 21 protruding from the plate surface are provided on the bottom surface 20 of the lower mold 18. As shown in FIG. 4, the air deflectors 21 are spaced in parallel with respect to the circumference of the remaining area except for the corner area of the bottom surface 20 of the lower mold 18. As such, the air deflector 21 formed on the bottom surface 20 of the lower mold 18 has the lower mold for cooling air flowing into the bottom surface 20 of the lower mold 18 through the air duct 14 for the lower mold. Since it serves to guide smoothly from the center region of the corner 18 to the corner region, each long side region L located near the center of the lower mold 18, and the short side and long side of the lower mold 18 The temperature deviation between each corner region C which crosses and is located far from the center of the lower mold 18 is reduced, so that the lower mold 18 is uniformly cooled as a whole to improve the cooling efficiency of the lower mold 18. It is possible to prevent deformation of the glass product to be cooled.

The inside of the turntable 12 is discharged to the turntable air duct 16 through which the cooling air is circulated for cooling the turntable 12 itself, and the air discharge port 23 formed on the turntable 12 to discharge the air discharge port 23. A plurality of air ducts 14 and 16 are respectively formed which are divided into air mold ducts 14 for lower molds for cooling the lower molds 18 arranged in the upper region of the mold.

In the lower duct air duct 14 below the air discharge port 23, the fixing part 29 and the other end of which are screwed onto the turntable 12 are opened upwardly so as to communicate with the air discharge port 23. A basket-shaped outer basket 27 is fixed to the lower basket accommodating portion 31 of 12) and has a cylindrical side wall portion in which a plurality of side wall openings 33 are formed. A rotating shaft 37 is formed inside the outer basket 27 so that the outer basket 27 can be rotated forward and backward within a predetermined angle range, and the sidewall opening 33 of the outer basket 27 is selectively opened and closed. A cylindrical inner basket 35 having a side wall portion with a plurality of side wall openings 39 formed thereon is also provided.

In the inner basket 35, a cone-shaped air guide member 40 is installed for smooth upward guidance of the cooling air. In the lower portion of the inner basket 35, both arms arm 41 is coupled to the lower end of the rotary shaft 37, the bush 42 is inserted into the rotary shaft 37 and the lower end is fixed to the plate surface of both arms arm 41 and A plurality of coil springs elastically supporting the inner basket 35 with respect to the outer basket 27 by having one end contacting the flange portion 43 of the bush 42 and the other end contacting the lower end portion of the turntable 12 ( 45) is installed.

By this configuration, when the molten glass is provided to the lower mold 18 from the melting furnace (not shown), the plunger disposed coaxially with the lower mold 18 is lowered to pressurize the glass contained in the lower mold 18. do. When the glass product is molded by pressurization of the plunger, the lower mold 18 reaches the fifth, seventh and ninth stations, and by cooling the lower mold 18 whose temperature is raised according to the press molding of the glass product. Cooling of the glass products located inside will be parallel.

First, when both arms 41 are rotated by a predetermined angle in one direction by a driving device (not shown), the rotating shaft 37 coupled thereto is also rotated, and the inner basket 35 is also rotated by a predetermined angle in association with the inner basket. The side wall opening 39 of the 35 and the side wall opening 33 of the outer basket 27 are in communication with each other. As such, when the side wall openings 39 and 33 between the inner and outer baskets 35 and 27 coincide with each other, the cooling air supplied into the lower mold air duct 14 passes through the side wall openings 39 and 33 communicating with each other. After being introduced into the inner basket 35, it is guided upward by the air guide member 40 to the bottom surface 20 of the lower mold 18 through the air discharge port 23.

As such, the cooling air is directed to the bottom surface 20 of the lower mold 18, thereby cooling the lower mold 18 including the molded glass product. At this time, since the bottom face 20 of the lower mold 18 is provided with a plurality of air deflectors 21 parallel to the circumference of the remaining area except the edge area, the bottom face 20 of the lower mold 18 Cooling air flowing into the surface smoothly flows from the center region of the lower mold 18 to the corner region, and thus the temperature between each long side region L and each corner region C of the bottom surface 20 of the lower mold 18. The deviation is reduced, and as a result, the lower mold 18 is cooled uniformly as a whole to prevent deformation of the product.

Thus, in the present invention, by providing at least one air deflector projecting from the plate surface spaced apart from the periphery of the remaining area except the corner area of the lower mold on the bottom surface of the lower mold, the lower mold is cooled uniformly as a whole the lower mold It is possible to improve the cooling efficiency of the product and to prevent deformation of the product.

Meanwhile, in the above-described embodiment, although the plurality of air deflectors are spaced apart from the circumference of the remaining area except the corner area of the lower mold on the bottom surface of the lower mold, they protrude from the plate surface. Only the air deflector may be provided on the bottom surface of the lower mold.

As described above, according to the present invention, there is provided a mold apparatus for molding a glass product which can cool the lower mold as a whole to improve the cooling efficiency of the lower mold and prevent deformation of the product.

Claims (2)

A mold apparatus for a glass forming apparatus having a lower mold for interacting with a liftable plunger to form a glass article for a cathode ray tube, Molding apparatus for a glassware forming equipment, characterized in that the bottom surface of the lower mold is provided with at least one air deflector projecting from the plate surface spaced apart from the periphery of the remaining area except the corner region of the lower mold. The method of claim 1, The air deflector is a molding apparatus for a glass product forming equipment, characterized in that spaced apart parallel to the circumference of the lower mold.