KR950002570B1 - Curved surface forming method of flat mast for cathode-ray tube - Google Patents

Curved surface forming method of flat mast for cathode-ray tube Download PDF

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Publication number
KR950002570B1
KR950002570B1 KR1019920016686A KR920016686A KR950002570B1 KR 950002570 B1 KR950002570 B1 KR 950002570B1 KR 1019920016686 A KR1019920016686 A KR 1019920016686A KR 920016686 A KR920016686 A KR 920016686A KR 950002570 B1 KR950002570 B1 KR 950002570B1
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South Korea
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flat mask
basket
heat treatment
molding
curved surface
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KR1019920016686A
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Korean (ko)
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KR940007936A (en
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김재호
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주식회사금성사
이헌조
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22Applying luminescent coatings
    • H01J9/227Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

The molding method comprises (a) laminating a flat mask (1) on a basket (10) formed with a primary curved surface-shaped bottom surface (11), (b) heat-treating and primary curved surface molding the laminated basket, and (c) molding the treated and premolded basket in accordance with the designed shape. The basket is formed with at least one of insert space part (12), being filled with the flat mask, and small pores (11a) in the bottom surface.

Description

음극선관용 플래트 마스크 곡면 성형방법Flat Mask Curve Forming Method for Cathode Ray Tubes

제1도는 종래의 플래트 마스크 성형 공정도.1 is a conventional flat mask molding process diagram.

제2도는 종래 플래트 마스크 예비곡선 성형작업의 설명도.2 is an explanatory diagram of a conventional flat mask precursor forming operation.

제3도는 종래 플래트 마스크 성형작업에 사용되는 바스켓의 구성도.3 is a block diagram of a basket used in the conventional flat mask molding operation.

제4도는 종래 플래트 마스크의 평면도.4 is a plan view of a conventional flat mask.

제5도는 종래 금형작업 설명도.5 is an explanatory diagram of a conventional mold operation.

제6도는 본 발명에 의한 플래트 마스크 성형 공정도.6 is a flat mask forming process chart according to the present invention.

제7도 내지 제9도는 본 발명의 성형작업에 사용되는 바스켓의 실시예들을 보인 단면도.7 to 9 are cross-sectional views showing embodiments of the basket used in the molding operation of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 플래트 마스크 10 : 바스켓1: flat mask 10: basket

11 : 밑면 11a : 구멍11: bottom 11a: hole

12 : 삽입공간부12: insertion space

본 발명은 음극선관용 플래트 마스크(flat mask) 곡면 성형방법에 관한 것으로, 특히 열처리를 실시하면서 예비곡면을 동시에 성형하는 열처리 및 예비곡면성형단계와, 프레스 성형에 의하여 설계된 형상대로 성형하는 주성형단계를 거쳐 플래트 마스크를 성형함으로써 작업성 및 생산성을 향상하고, 품질을 향상하도록한 음극선관용 플래트 마스크 곡면 성형방법에 관한 것이다.The present invention relates to a flat mask curved molding method for a cathode ray tube, and more particularly, to a heat treatment and a preliminary curved molding step of simultaneously forming a precurve while performing a heat treatment, and a main molding step of forming a shape designed by press molding. The present invention relates to a flat mask curved surface forming method for a cathode ray tube, which improves workability and productivity by molding a flat mask.

종래에는 플래트 마스크를 형성함에 있어서, 제1도에 도시한 바와같이, 열처리를 실시하여 플래트 마스크 소재의 응력을 제거한 후, 이어서 플래트 마스크의 예비곡면을 성형 롤러를 이용하여 성형하고, 이어서 프레스 금형을 이용하여 플래트 마스크를 설계된 형상으로 성형한다.Conventionally, in forming the flat mask, as shown in FIG. 1, heat treatment is performed to remove the stress of the flat mask material, and then the precurved surface of the flat mask is molded using a forming roller, and then the press die is formed. To form the flat mask into the designed shape.

보다 구체적으로 설명하면, 플래트 마스크(1)을 제3도에 도시한 바와같이 밑면이 매쉬(mesh)로 된 바스켓(basket)(5)에 담아 열처리용 수소로에서 응력 제거를 위한 열처리를 실시하고, 제2도에 도시한 바와같이 롤러 성형기(2)에 의하여 롤러 레벨링(roller reveling)을 실시하여 성형성 향상을 위한 예비곡면(R)을 형성한 후, 플래트 마스크(1)를 제5도에 도시한 바와같은 금형(6)(7)에 장착하되 플래트 마스크(1)의 노치(1a)가 금형(7)의 가이드핀(11)에 정확하게 일치하도록 금형에 삽입하여 압착 성형하고, 성형된 플래트 마스크(1)를 취출함으로써 성형작업이 끝난다.More specifically, as shown in FIG. 3, the flat mask 1 is placed in a basket 5 having a mesh of bottom surface, and heat treatment is performed to remove stress in a hydrogen heat treatment furnace. As shown in FIG. 2, after the roller reveling is performed by the roller forming machine 2 to form the preliminary curved surface R for improving formability, the flat mask 1 is attached to FIG. 5. Mounted to the mold (6) (7) as shown in the drawing, the notch (1a) of the flat mask 1 is inserted into the mold so as to exactly match the guide pin (11) of the mold (7), and the molded plate The molding operation is completed by taking out the mask 1.

상기한 바와같은 성형하게 되면 플래트 마스크(1)가 롤러 성형기(2)의 회전하는 성형롤러들 사이를 통과하면서 그 압력에 의하여 곡면이 형성되므로 회전 성형롤러와의 마찰에 의하여 표면 긁힘 불량이 발생하고, 회전 성형롤러와 플래트 마스크 사이에 이물질이 있을 경우 표면 긁힘 및 찍힘 불량이 발생하며, 성형롤러에 의해 예비곡면이 성형된후 가이드롤러(3)에 의하여 적재장치(4)에 적재될 때에도 가이드롤러(3)와의 마찰에 의하여 표면 긁힘 불량이 발생할 뿐아니라, 기 적재된 플래트 마스크(1)위에 다음 플래트 마스크(1)가 적재될 때 기 적재된 플래트 마스크(1)의 표면을 다음 플래트 마스크(1)의 선단부가 부딪힘(C)으로서 긁힘 및 찍힘 불량이 발생하였다.When the molding as described above, the flat mask is formed by the pressure while the flat mask (1) passes between the rotating forming rollers of the roller forming machine (2), so the surface scratching defect occurs due to friction with the rotating forming roller , If there is foreign matter between the rotating forming roller and the flat mask, surface scratches and chipping defects occur. In addition to the surface scratches caused by friction with (3), when the next plate mask 1 is loaded on the plate plate 1, the surface of the plate plate 1 is loaded. Scratches and chipping defects were generated as the tip C of the () was collided.

따라서, 상기한 바와같은 플래트 마스크(1)를 성형하게 되면 제품의 품질이 저하되고, 예비곡면 성형작업이 별도로 요구되는 것이므로 작업인원이 증가될 뿐아니라 생산성이 저하되었으며, 롤러 성형기(2) 구동에 따라 에너지가 낭비되는 결함이 있었다.Therefore, when the flat mask 1 is formed as described above, the quality of the product is lowered, and the pre-curve forming operation is required separately, thereby increasing the number of workers as well as reducing productivity, and driving the roller molding machine 2. Therefore, there was a defect in which energy was wasted.

본 발명은 상기한 바와같은 종래의 결함을 해소하기 위하여 창안한 것으로, 열처리를 실시하면서 예비곡면을 동시에 성형하는 열처리 및 예비곡면성형단계와, 프레스 성형에 의하여 설계된 형상대로 성형하는 주성형(主成形)단계를 거쳐 플래트 마스크를 성형함으로써 작업성 및 생산성을 향상하고, 품질을 향상하도록한 것인바, 이러한 본 발명을 첨부한 도면에 의하여 상세히 설명하면 다음과 같다.The present invention has been made to solve the above-mentioned conventional defects, and the heat-treatment and pre-curve forming step of simultaneously forming the pre-curve while performing the heat treatment, and the main molding for forming to the designed shape by press molding The step of forming a flat mask to improve the workability and productivity, and to improve the quality, the present invention will be described in detail by the accompanying drawings as follows.

제6도는 본 발명에 의한 플래트 마스크 성형공정도로서, 이에 도시한 바와같이, 플래트 마스크를 열처리를 하면서 예비곡면을 성형하는 열처리 및 예비곡면성형단계와, 프레스 성형에 의하여 설계된 형상대로 주성형(主成形)을 실시하는 단계로 구성되어 있다.6 is a process for forming a flat mask according to the present invention, as shown in the drawing, a heat treatment and a preliminary curved forming step of forming a precurve while heat treating a flat mask, and a main molding in a shape designed by press molding. )).

제7도는 열처리시 플래트 마스크(1)를 담기위한 바스켓(10)을 보인 도면으로서, 이에도시한 바와같은 본발명에 따르는 바스켓(10)은 밑면(11)이 요구하는 예비곡면과 동일한 곡면으로 형성되고, 그 밑면(11)에는 열처리시 분위기 가스(H2,N2,H2O)의 침투가 용이하도록 작은 구멍(11a)들이 조밀하게 형성되어 있다. 부호 12는 플래트 마스크(1)가 담기는 삽입공간부를 보인 것이다.7 is a view showing a basket 10 for holding the flat mask 1 during heat treatment, the basket 10 according to the present invention as shown in the figure is formed of the same curved surface as the preliminary surface required by the base 11 In the bottom 11, small holes 11a are densely formed so as to easily penetrate the atmosphere gases H 2 , N 2 , and H 2 O during the heat treatment. Reference numeral 12 shows an insertion space portion in which the flat mask 1 is contained.

제8도는 플래트 마스크(1)를 담기위한 바스켓(10)의 다른 실시예를 보인 것으로, 상기 제7도의 실시예는 곡면형 밑면(11)이 상측으로 볼록하게 형성되어 있으나, 이 제8도의 다른 실시예는 곡면형 밑면(11)이 하측으로 볼록하게 형성되어 있는 것이다.FIG. 8 shows another embodiment of the basket 10 for containing the flat mask 1. In the embodiment of FIG. 7, the curved bottom 11 is formed to be convex upward. In the embodiment, the curved bottom 11 is formed to be convex downward.

제9도는 바스켓(10)의 또 다른 실시예를 보인 것으로, 이 제9도의 실시예는 제7도의 바스켓(10)을 복수개(도면에는 2개) 연설한 형상으로 되어 있어 작업수량을 배가 할 수 있도록 되어 있다.FIG. 9 shows another embodiment of the basket 10. The embodiment of FIG. 9 has a shape in which a plurality of the baskets 10 of FIG. 7 are spoken (two in the drawing) to double the amount of work. It is supposed to be.

본 발명에 따라 플래트 마스크(1)를 성형하는 경우에는 제7도 내지 제9도와 같은 바스켓(10)에 플래트 마스크(1)를 적재하고, 이 바스켓(10)을 열처리로에 장착하여 열처리를 실시한다.In the case of forming the flat mask 1 according to the present invention, the flat mask 1 is placed in a basket 10 as shown in FIGS. 7 to 9, and the basket 10 is mounted on a heat treatment furnace to perform heat treatment. do.

열처리를 실시하면 열처리 최고온도(재결정온도)에서 플래트 마스크(1)가 열변형하여 자중에 의해 바스켓(10)의 밑면(11)이 이루고 있는 곡면의 형태로 예비곡면이 형성된다.When the heat treatment is performed, the flat mask 1 is thermally deformed at the highest heat treatment temperature (recrystallization temperature) to form a preliminary curved surface in the form of a curved surface formed by the bottom surface 11 of the basket 10 due to its own weight.

이후, 열처리로 내의 냉각구역에서 냉각을 시키면 열처리와 함께 예비곡면이 형성된 플래트 마스크(1)를 얻을 수 있게 된다.Subsequently, when the cooling is performed in the cooling zone in the heat treatment furnace, the flat mask 1 having the precured surface is formed together with the heat treatment.

상기와 같이 열처리가 완료되면 바스켓(10)으로 부터 플래트 마스크(1)를 꺼낸후 프레스 금형에서 설계된 형상대로 주성형을 실시한다.When the heat treatment is completed as described above, take out the flat mask (1) from the basket 10 and performs the main molding according to the shape designed in the press die.

이상에서 설명한 바와같은 본 발명은 종래에 비하여 공정을 축소할 수 있고, 표면 긁힘 및 불량을 제거할 수 있으며, 이에 따라 작업인원을 절감함과 아울러 생산성을 향상할 수 있다. 그리고, 예비곡면성형단계에서 긁힘 및 찍힘 등의 불량이 미세하게 발생하면 주성형시 압착력에 의하여 결함이 확대되어 나타나게 되는 것이나, 본 발명은 예비곡면성형단계에서 긁힘 및 찍힘 불량이 제거되므로 주성형의 프레스 공정에서 불량을 현저히 감소할 수 있는 이점이 있다.The present invention as described above can reduce the process compared to the conventional, can remove the surface scratches and defects, thereby reducing the work force and improve the productivity. In addition, when defects such as scratching and chipping occur in the preliminary curved molding step, the defects are enlarged by pressing force during the main molding. There is an advantage that can significantly reduce the defect in the press process.

Claims (2)

밑면(11)이 예비곡면의 형상으로 형성된 바스켓(10)에 플래트 마스크(1)를 적재하고 열처리를 실시하여 열처리와 예비곡면 성형을 동시에 행하는 열처리 및 예비곡면성형단계와, 프레스 성형에 의하여 설계된 형상대로 성형하는 주성형단계로 구성함을 특징으로 하는 음극선관용 플래트 마스크 곡면 성형방법.The heat treatment and pre-curve forming step of loading the plated mask 1 into the basket 10 having the bottom surface 11 formed in the shape of the pre-curve and performing heat treatment to simultaneously perform heat treatment and pre-curve forming, and a shape designed by press molding. Flat mask curved surface forming method for a cathode ray tube, characterized in that consisting of the main molding step for molding. 제1항에 있어서, 상기 바스켓(10)은 플래트 마스크(1)가 담기는 삽입공간부(12)가 적어도 하나 이상형성되고, 곡면 형상의 밑면(11)이 상부 또는 하부로 볼록하게 형성되며, 밑면(11)에는 열처리시 분위기 가스의 침투가 용이하도록 작은 구멍(11a)들이 조밀하게 형성시킨 것임을 특징으로 하는 음극선관용 플래트 마스크 곡면 성형방빕.According to claim 1, wherein the basket 10 is formed with at least one insertion space portion 12, the flat mask (1) is contained, the bottom surface 11 of the curved shape is formed convex to the upper or lower, The bottom surface 11 is a flat mask curved surface forming shield for cathode ray tube, characterized in that the small holes (11a) are formed densely to facilitate the penetration of the atmosphere gas during the heat treatment.
KR1019920016686A 1992-09-14 1992-09-14 Curved surface forming method of flat mast for cathode-ray tube KR950002570B1 (en)

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KR1019920016686A KR950002570B1 (en) 1992-09-14 1992-09-14 Curved surface forming method of flat mast for cathode-ray tube

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KR1019920016686A KR950002570B1 (en) 1992-09-14 1992-09-14 Curved surface forming method of flat mast for cathode-ray tube

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KR950002570B1 true KR950002570B1 (en) 1995-03-23

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