KR100191935B1 - A fixed apparatus of panel pin for braun tube - Google Patents

Abstract

The present invention relates to an apparatus for fusion bonding of pins at corners of a CRT panel, comprising: a supporting member (20) installed on a base plate (10) for supporting the panel (1) at four points on its bottom surface; Sliding member 30 is installed on the diagonal of the (10) is conveyed before and after, the chucking member 40 is installed on the sliding member 30 above the vacuum suction pin (P), and the chucking member ( 40 is provided on one side of the high frequency induction heater 50 for heating the fin (I) to a predetermined temperature, and the pressing means for pressing the chucking member 40 before and after the inner surface side of the panel ( 60, a supporter 70 supporting the bottom of the panel 1 and being vertically adjusted by the first pneumatic cylinder 71, and installed on one side of the supporter 70 to center the panel 1. It is composed of a plurality of alignment support (80) to the base plate sliding diagonally with the member By installing the king member and the high frequency induction heater, the pins can be fused to the corners of the panel, so that the shadow mask can be reliably mounted on the large color CRT panel, thereby improving the reliability of the product for quality images. have.

Description

Pin welding device for CRT panel

The present invention relates to a device for fusing pins at corners of a CRT panel, and more particularly, an electron beam emitted from an electron gun installed on a color CRT tube of a television receiver and a monitor is coated with an RGB phosphor on an inner surface of the CRT panel. The pins can be installed at the inner corners of the panel where the shadow mask that collides the fluorescent film to reproduce colors and images is fixed.

A typical CRT is a panel with a phosphor coated on an inner surface of a panel and a shadow mask mounted thereon, a rear glass channel containing an anode button for applying high pressure to the rear of the panel, and an electron gun embedded therein. The shadow mask, which is installed on the panel of the CRT, constitutes the neck fused at the rear side, and is used for the CRT, and is fixedly fixed by the pin at a distance of about 10 mm from the inner surface of the panel forming the front part of the CRT. The thickness of the metal sheet is about 0.15mm, and 30-400,000 holes are regularly drilled, and the size of the holes is perforated according to the resolution of the image quality.

In order to mount such a shadow mask on the CRT panel, a bimetal spring having a fixing hole is attached to the horizontal edge and the vertical edge of the support frame surrounding the shadow mask, and the fixing hole is fitted to the inner horizontal side and the vertical side of the panel to form a shadow. Pins are provided to secure the mask.

The fins are fused to the panel in a state in which the fins P are heated to a predetermined temperature by a high frequency induction heating method, and the fins are shown in FIG. a) and (b) show the arrangement of the fins P for supporting the shadow mask on the panel 1 of 14 inches or more, and the fins P shown in (c) are the large CRT panels 1 In order to stably install the shadow mask on the corners, the corners are installed diagonally on each corner to show the installation state so that the shadow mask can be fixed.

The technical problem of the present invention, as shown in (c) of FIG. 1, is that the arrangement of the pins is particularly applied to the corners of a large panel of 25 inches or more. The corner portion of the shadow mask mounted on the panel causes thermal expansion and deformation due to the electron beam generated from the electron gun, thereby degrading the image quality.

Therefore, the purpose is to solve the above problems by fusion of the pin in the corner of the panel.

According to the present invention for achieving the above object, in the device for pin fusion of the inner wall corner portion of the CRT panel, the support member is installed on the base plate to support the panel four points from the bottom, and the diagonal of the base plate Sliding member is installed on the conveyance before and after, the chucking member for vacuum suction of the supplied pin is installed on the upper side of the sliding member, and the high frequency induction is installed on one side of the chucking member to heat the fin to a predetermined temperature Heater, the front and rear adjustment means for adjusting the chucking member to the inner surface side of the panel, a plurality of supports for supporting the bottom of the outer circumference of the panel, and connected to the lower portion of the support mounted up and down Pins of the panel for CRT and pneumatic cylinders installed on one side of the support and installed on a plurality of alignment supports for centering the panel. By providing a fusion device.

(A) and (b) of FIG. 1 are rear views of panels showing fins arranged in general panels, and (c) is rear views of panels showing fusion arrangement of fins at corners of panels.

Figure 2 is a plan view showing a fusion device of the present invention pin.

3 is a cross-sectional view taken along the line A-A of FIG. 2 showing a state in which the pin according to the present invention is fused to the corner portion of the panel.

4 is a cross-sectional view taken along the line B-B in FIG.

* Explanation of symbols for main parts of the drawings

P: Pin 1: Panel

10: base plate 20: support member

30: sliding member 40: chucking member

50: high frequency induction heater 60: pressurizing means

70: support 71: first pneumatic cylinder

80: alignment support

When described in more detail with reference to the accompanying Figures 2 to 4 showing the present invention.

2 is a sectional view showing a fusion device for fusion of the pin to the corner portion of the CRT panel of the present invention, Figure 3 is a cross-sectional view taken along line AA of FIG. 2 showing a state in which the pin is fused according to the present invention. 4 is a cross-sectional view taken along line BB of FIG.

It relates to a fusion device for welding the pin (P) to the inner wall corner portion of the panel for the CRT, the support member 20 is installed on the base plate 10 for supporting the panel 1 from the bottom 4 points And a sliding member 30 which is transported back and forth on a diagonal of the base plate 10, and a chucking member 40 which vacuum-adsorbs the supplied pin P on the upper side of the sliding member 30. Is installed.

The support member 20 is formed to be bent at a right angle, the carbon 21 is installed on the upper surface to support the bottom surface of the panel 1 to maintain a temperature difference with respect to room temperature, the fixed shaft 11 of the base plate 10 The fitting hole 22 having a slit groove 22-1 at the bottom is formed so as to be fitted to the support.

Then, a high frequency induction heater 50 is installed on one side of the chucking member 40 to heat the fin P to a predetermined temperature, and the chucking member 40 is moved to the inner surface side of the panel 1. After pressurizing means 60 is installed.

In addition, the upper surface of the base plate 10 is provided with a plurality of supports 70 for supporting the bottom of the outer periphery of the panel 1, the lower portion of the support 70, the upper support 70 . The first pneumatic cylinder 71 to adjust the lower is installed, one side of the support 70 is provided with a plurality of alignment support 80 for centering the panel 1 in place.

In addition, the sliding member 30 is provided with a movable table 31 on which the chucking member 40 and the high frequency induction heater 50 are mounted, and a lower side of the movable table 31 has a guide roller 31-. An actuator arm 32 in which 1) is installed is attached, and a second pneumatic cylinder 33 for operating the front and rear of the movable table 31 is installed on one side of the actuator arm 32.

On the other hand, the pressing means 60 is a cam plate 62 rotated by the motor 61 and the guide roller 31-1 installed on the upper surface of the cam plate 62 and installed on the actuator arm 32 It consists of the guide piece 63 which guides by the immersion fixation of the pin P. As shown in FIG.

Referring to the pin fusion device of the CRT panel of the present invention configured as described above are as follows.

First, in order to fix the pin P to the panel 1, which is the front glass, which is fused with the channel glass, which is fused with the rear glass, the panel 1, which has been transported through a plurality of processes in the work line, is moved by a transfer hole, not shown. It is seated on the support 70 installed on the base plate 10.

In the above state, the panel 1 seated on the support 70 is installed at the lower part of the base plate 10 by a sensor (not shown) and operates the first pneumatic cylinder which is extended with the support 70. It lowers the support 70 installed on the base plate 10.

The bottom surface of the panel 1 supported by the support 70 lowered by the first pneumatic cylinder 71 is the carbon 21 of the support member 20 installed on the fixed shaft 11 of the base plate 10. It will be placed on the top.

On the other hand, the fitting hole 22 formed in the lower portion of the support member 20 is fitted from the upper side of the fixed shaft 11, the slit groove 22-1 formed in communication with one side of the fitting hole 22 ) Is seated on the panel in a state of being supported with a suitable force against the diameter of the fixed shaft (11).

In addition, the carbon 21 attached to the upper surface of the supporting member 20 is intended to prevent damage to the panel by minimizing the temperature difference between the parts directly contacting the bottom surface of the panel 1.

On the other hand, the alignment support 80 provided on the base plate 10 supports the center of the outer surface of the panel on the side of the outer periphery of the panel 1 and at the same time supports it in place.

On the other hand, before the support 70 is installed on the base plate 10, the pin (P) to match the chucking member 40 provided on the upper side of the sliding member 30, respectively, the chucking flow not shown The pin P is vacuum-adsorbed from the.

In the above state, the sliding member 30 is operated as in the attached direction to move the moving table 31 of the sliding member 30 40 to the inner side of the panel 1.

At the same time, the high frequency induction heater 50 installed above the movable table 31 of the horizontal member heats the fin P instantaneously to a predetermined temperature so that the fin P can be immersed.

In this state, the first pneumatic cylinder 71 of the horizontal member pulls the actuator arm 32 attached to the lower portion of the movable table 31 horizontally, and guide rollers rotatably installed at one end of the actuator arm 32. 31-1 is the curvature formed in the guide piece 63 of the cam plate 62 which is the structure of the press means 60 provided in the lower center of the base plate 10, as shown in FIG. The cam plate 62 is rotated by the driving force of the motor 61 installed under the cam plate 62.

On the other hand, the guide roller 31-1 is guided in a dense state by the pulling force of the second pneumatic cylinder 33 along the curvature formed in the guide piece 63.

At this time, when the guide roller 31-1 is guided to the recessed portion at the initial point of the guide piece 63, the heated fin P is immersed into the corner portion of the panel 1, and the guide roller 31-1 The pin P is drawn out from the panel 1 at the same time as the pin P is pulled out from the panel 1 in a state where the portion from the recessed portion of the guide piece 63 reaches the portion raised by the continuous rotation of the cam plate 62.

As described above, after the pin P is immersed and fixed, the second pneumatic cylinder 33 pushes the actuator arm 32 in reverse to release the guide roller 31-1 from the guide piece 63, and the panel 1 Support 70, which was supporting the bottom of the outer circumference of the) is lifted by the first pneumatic cylinder (71), the upper panel (1) is transferred to the next process line by a conveying port (not shown), and sequentially transported The pins (P) can be repeatedly fused and fixed to the panel (1).

As described above, according to the present invention, by installing a high frequency induction heater on the sliding member and the chucking part which constitute the fusion apparatus diagonally on the base plate, the pins are immersed and fixed to the corner part of the panel to the large color CRT panel. It is possible to mount the applied shadow mask more stably, thereby improving the reliability of the product for a good image.

Claims (4)

In the welding device for welding the pin (P) to the corner portion of the CRT panel (1), the base plate (10) is fitted on the fixed shaft (11) to support the panel (1) four points from the bottom Vacuum suction of the member 20, the sliding member 170 is installed on the diagonal of the base plate 10 to be transported back and forth, and the pin (P) provided on the upper side of the sliding member 30 supplied The chucking member 40 and the high frequency induction heater 50 installed on one side of the chucking member 40 to heat the fins P to a predetermined temperature, and the chucking member 40 are panel 1. Pressing means (60) for pressing the front and back to the inner surface side of the plurality of supporters (70) for supporting the bottom of the outer periphery of the panel (1), and is installed connected to the lower portion of the support (70). A first pneumatic cylinder 71 for adjusting the lower and a plurality of alignment support 80 is installed on one side of the support 70 to center the panel 1 Pin fusing device of the CRT panel, characterized in that configured. According to claim 1, wherein the support member 20 is bent at a right angle, the carbon 21 is provided on the top surface to support the bottom surface of the panel 1 to maintain a temperature difference with respect to room temperature, the base plate shape (10) Pin fusion device of the panel for CRT panel, characterized in that the fitting hole 22 having a slit groove (22-1) formed in the lower portion so as to be fitted to the fixed shaft (11) of the. According to claim 1, The sliding member 310 is a movable table 31 on which the chucking member 40 and the high frequency induction heater 50 is placed, and the lower end of the movable table 31 is guided at one end An actuator arm 32 provided with a roller 31-1, and a second pneumatic cylinder 33 which is addressed to one side of the actuator arm 32 to operate the moving table 31 before and after is operated. Pin welding device for cathode ray tube panel. The guide roller (31) according to claim 1, wherein the pressurizing means (60) is installed on a cam plate (62) rotated by a motor (61) and an upper surface of the cam plate (62) and installed on an actuator arm (32). -1) pin fusion apparatus of the panel for a CRT panel, characterized in that the guide piece (63) for inducing immersion fixation of the pin (P).