KR100618376B1 - Apparatus for chucking neck of cathode ray tube - Google Patents

Abstract

The present invention relates to a neck chucking device of a cathode ray tube for chucking a neck in order to deposit a neck on a channel. The neck chucking device of the present invention is provided with three sliders which radially linearly reciprocate at equal intervals by interlocking a cylinder having a rod and a lever connected to the rod of the cylinder. A jaw is mounted on the upper surface of the slider to chuck the outer periphery of the neck, and the neck is supported by the table. In addition, the tip is rotatably mounted around the fixed shaft to chuck the outer periphery of the neck at the top of the jaw, the tip is first adjustment through the first screw hole and the second screw hole formed in the upper and lower ends of the jaw respectively The inclination is adjusted by the screw and the second adjusting screw, and a nozzle of the blower is mounted at the center of the table to blow air into the hollow of the neck. According to the present invention, when the slider is linearly reciprocated by the driving of the cylinder, the outer periphery of the necks having different diameters can be chucked by the cooperation of the tip, which can be tilted to the jaw, so that scratches can be prevented from the inner periphery of the neck. In addition, the chucking is stable. In addition, since air is injected into the hollow of the neck by driving the blower to prevent the generation of condensed water, defects are prevented and productivity is improved, and high quality of the neck can be maintained.

Description

Neck chucking device of cathode ray tube {APPARATUS FOR CHUCKING NECK OF CATHODE RAY TUBE}

1 is a cross-sectional view schematically showing a neck chucking device of a conventional cathode ray tube,

2 is a cross-sectional view showing a neck chucking device of a cathode ray tube according to the present invention;

3 is a cross-sectional view showing the operation of FIG.

4 is a plan view schematically showing a neck chucking device according to the present invention;

5 is a cross-sectional view partially showing the tip and the angle adjusting means of the tip in the neck chucking device according to the present invention,

6 is a cross-sectional view showing the operation of FIG.

7 is a cross-sectional view showing the height adjusting means in the neck chucking device according to the present invention,

8 is a cross-sectional view showing the operation of FIG.

♣ Explanation of symbols for the main parts of the drawing ♣

12: neck 30: cylinder

40: lever 50: slider

52: base plate 54: guide slot

60: Joe 62, 64: First and second screw holes

70: tip 74, 76: first and second adjusting screws

80: table 90: nozzle

100: post 104: adjusting screw shaft

108: housing 112: fixing nut

The present invention relates to a neck chucking device of a cathode ray tube that chucks a neck to deposit a neck on a funnel.

Cathode ray tubes used in the manufacture of color televisions and computer monitors basically consist of three components: a panel through which the image is projected, a conical channel attached to the back of the panel, and welding at the vertex of the channel. Consisting of a tubular neck. The panel is provided with a face and a skirt. An imaging phosphor is applied to the inner surface of the face, and a shadow mask having a plurality of holes is supported by the pin on the skirt. An electron gun is installed in the neck, and the electron gun generates an image by firing an electron beam through a hole of a shadow mask with a phosphor.

These panels, channels and necks are all made of glass. In particular, the panel and channel will produce a molten glass mass called a gob by press molding into a desired size and shape. Press-formed panels are processed into finished products through pin sealing stations, slow cooling furnaces, grinding and inspection stations, and press-formed panels are button sealing stations, primary slow cooling furnaces, die cutting and neck welding stations, secondary slow cooling furnaces, polishing And an inspection station to be processed into finished products.

On the other hand, since the press-formed channel has an unnecessary tail called moil, it is necessary to cut it and remove it, and to weld the neck to the mole cut surface. The cutting of the neck and the welding of the neck are performed by using the cutting device and the neck welding device arranged in sequence on the channel transfer path. In the neck welding apparatus, a flared necked funnel is generally manufactured by welding a flared neck to a channel. The flared neck has a flare that can guide the installation of an electron gun at a cathode ray tube maker, and a processing allowance that can be finished to meet the specifications of the electron gun during encapsulation. In such a neck welding apparatus, a neck chucking device for grasping and aligning the neck is required to weld the neck to the cut surface of the channel.

Referring to the neck chucking device of the conventional cathode ray tube based on Figure 1, the neck 12 is welded to the cutting surface of the channel 10 has a hollow 14, the hollow 14 of the neck 12 has a central axis ( 20) is fitted. On the outer circumference of the central shaft 20 is mounted a plurality of jaws 24 which are operated by the driving of the cylinder 22 and the front end guides the central shaft 20 to enter the hollow 14 of the neck 12. Carbon 26 is mounted.

However, since the neck chucking device of the conventional cathode ray tube is inserted into the hollow 14 of the neck 12 to perform chucking, scratches are generated while the jaw 24 and the carbon 26 touch the inner circumference of the neck 12. There was a problem that the defective rate is increased. In particular, the space between the inner circumference of the neck 12 and the jaw 24 is managed at about 0.5 mm, and the scratches of the neck 12 by the jaw 24 are being increased.

In addition, since the diameter of the neck 12 is also manufactured according to the size of the cathode ray tube, the chucking device suitable for the diameter of the neck 12 should be used. However, in recent years, since the cathode ray tube is manufactured in a small quantity production of a large number of varieties, the inconvenience of frequently replacing the neck chucking device is generated. When the neck chucking device is replaced, care must be taken so that the inclination of the neck 12 is kept constant. Therefore, there is a problem in that productivity is reduced due to delay in working time and waste of manpower due to replacement of the neck chucking device.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a neck chucking device of a cathode ray tube that can chuck the outer periphery of the neck.

Another object of the present invention is to provide a neck chucking device of a cathode ray tube that can chuck necks having different diameters.

Another object of the present invention is to provide a neck chucking device of a cathode ray tube to improve the productivity.

Another object of the present invention is to provide a neck chucking device of a cathode ray tube that can improve the quality of the neck.

It is still another object of the present invention to provide a neck chucking device of a cathode ray tube capable of adjusting the chucking position with respect to necks of different lengths.                         

A feature of the present invention for achieving the above object is a cylinder having a rod; Three sliders radially linearly reciprocating at equal intervals by an interlock of a lever connected to a rod of a cylinder; Jaws each mounted on the upper surface of the slider to chuck the outer periphery of the neck; And a neck chucking device of a cathode ray tube comprising a table supporting the neck.

In addition, a tip is rotatably mounted around a fixed shaft to chuck the outer periphery of the neck at the top of the jaw, and the tip is first adjusted through first and second screw holes respectively formed above and below the top of the jaw. The inclination is adjusted by the screw and the second adjusting screw. Therefore, the inclination of the tip can be precisely adjusted with respect to the outer circumference of the neck.

And since the nozzle of the blower which injects air to the hollow of a neck is mounted in the center of a table, it exists in that generation | occurrence | production of the condensate by a temperature difference is prevented.

Hereinafter, a preferred embodiment of a neck chucking device of a cathode ray tube according to the present invention will be described in detail with reference to the accompanying drawings.

2 to 8 are diagrams for explaining the neck chucking device of the cathode ray tube according to the present invention.

First, referring to FIGS. 2 and 3, the cylinder 30 of the neck chucking apparatus according to the present invention has a rod 32, and three levers 40 are equally spaced at the tip of the rod 30. Arranged and connected. The center of the lever 40 is rotatably coupled around the pin 42 and both ends are operatively connected to the tip of the rod 32 and the slider 50, respectively.

As shown in FIG. 4, the slider 50 is installed on the upper surface of the base plate 52 so as to linearly reciprocate along the guide slots 54 formed radially at equal intervals.

As shown in FIG. 2 and FIG. 5, the jaw 60 which chucks the outer periphery of the neck 12 is mounted in the upper surface of the slider 50, respectively, and the 1st screw hole 62 is provided in the upper and lower ends of the jaw 60. As shown in FIG. And second screw holes 64 are formed, respectively. A tip 70 for chucking the outer circumference of the neck 12 is rotatable about a fixed shaft 66 fixed between the first screw hole 62 and the second screw hole 64 of the jaw 60. It is mounted, the upper surface of the tip 70 is formed so that the guide surface 72 for guiding the entry of the neck 12 is inclined downward from the outside toward the inside. Then, the first adjusting screw 74 and the second adjusting screw 76 which can adjust the inclination of the tip 70 to the first screw hole 62 and the second screw hole 64 of the jaw 60. Are fastened respectively.

In addition, a table 80 supporting the neck 12 at the center of the base plate 52 is installed by the support of the spring 82, and the table 80 is fixed to the upper surface of the base plate 52. The lifting and lowering is installed along the guide post 84. In the center of the table 80, the nozzle 92 of the blower 90 fitted to the hollow 14 of the neck 12 is mounted.

7 shows that the length of the neck 12 is short, and FIG. 8 shows that the length of the neck 12 is long. 7 and 8, the neck chucking device of the present invention is provided with height adjusting means capable of adjusting the chucking position with respect to necks 12 of different lengths. As for the height adjustment means, the upper end of the post 100 is vertically fixed to the center of the lower surface of the cylinder 30, and the female screw 102 is formed at the lower end of the post 100. The upper end of the adjusting screw shaft 104 is fastened to the female screw 102 of the post 100, and the handle 106 is formed at the lower end of the adjusting screw shaft 104. The post 100 and the adjusting screw shaft 104 are wrapped in the housing 108, and the housing 108 is fixedly mounted to the frame 110 of the neck chucking device. At this time, the handle 106 of the adjustment screw shaft 104 protrudes to the lower portion of the housing 108. In addition, a fixing nut 112 to which the lower end of the adjusting screw shaft 104 is attached is attached to the lower end of the housing 108, and a guide bush 114 for guiding the adjusting screw shaft 104 vertically is mounted inside the lower end. .

The operation of the neck chucking device of the cathode ray tube according to the present invention will now be described.

As shown in FIGS. 2 and 3, when the rod 32 of the cylinder 30 is advanced to enter the neck 12 between the tips 70 while the jaw 60 is opened, that is, in the open state, the neck ( 12 passes through the tip 70 and is supported by the upper surface of the table 80, and the nozzle 92 of the blower 90 is fitted into the hollow 14 of the neck 12. At this time, the guide surface 72 of the tip 70 guides the entry of the neck 12 naturally, thereby preventing the neck 12 from being caught. Then, the spring 82 is compressed by being pressed by the table 80 descending along the guide post 84 when the neck 12 is supported on the upper surface of the table 80 to absorb the shock.

Next, when the hollow 14 of the neck 12 is fitted to the nozzle 92 to be supported by the upper surface of the table 80, the rod 32 is retracted by the driving of the cylinder 30. Accordingly, the jaw 60 is closed while the slider 50 is guided along the guide slot 54 of the base plate 52 by the linkage of the lever 40. As the jaw 60 is closed, the tip 70 cooperates to chuck the outer periphery of the neck 12.

As the jaw 60 opens and closes as described above, the tip 70 chucks the outer circumference of the neck 12, so that the chucking of the necks 12 having different diameters can be performed without any concern, thereby improving productivity. . In addition, the scratches generated in the hollow 14 of the neck 12 may be prevented to maintain the quality of the neck 12.

On the other hand, after the chucking of the neck 12 is completed, the neck 12 is aligned with the cutting surface of the channel 10, and the channel 10 and the neck 12 are welded by the burner of the neck welding apparatus which is not shown in figure. Let's do it.

In addition, during welding of the neck 12, air is injected into the hollow 14 of the neck 12 through the nozzle 92 by driving the blower 90. Due to the injection of air, condensate is prevented from occurring due to a temperature difference between the outer circumference and the inner circumference of the neck 12 caused by the fire of the burner. Therefore, the deformation of the neck 12 is prevented, as well as foreign matter remaining in the hollow 14 of the neck 12 is removed, thereby reducing defects.

As shown in FIG. 5, when the first and second adjusting screws 74 and 76 are fastened through the first and second screw holes 62 and 64 of the jaw 60, the first and second adjusting screws are tightened. As the tip 70 is rotated about the fixed shaft 66 according to the fastening of the 74 and 76, the inclination of the tip 70 is adjusted.

That is, when the first adjusting screw 74 is tightened and the second adjusting screw 76 is released, the tip of the first adjusting screw 74 pushes the upper side of the tip 70. Accordingly, the tip 70 is rotated about the fixed shaft 66 and the inclination is adjusted so that the upper end is closer to the outer circumference of the neck 12 and the lower end is farther away. On the contrary, when the second adjusting screw 116 is tightened, the inclination is adjusted so that the upper end of the tip 70 is farther away and the lower end is closer to the outer circumference of the neck 12.

As described above, since the inclination of the tip 70 can be precisely adjusted by the fastening of the first and second adjustment screws 74 and 76, the chucking of the neck 12 by the tip 70 is made stable.

As shown in Figs. 7 and 8, when welding the channel 10 and the neck 12, the chucking position of the neck 12 should be adjusted if the length of the neck 12 is changed. In this case, when the knob 106 of the adjusting screw shaft 104 is rotated, the adjusting screw shaft 104 is vertically moved along the guide bush 114 while being tightened or loosened to the fixing nut 112. As a result, the neck chucking device is raised and lowered as a whole, so that the neck 12 having a different length can be chucked and fused to the channel 10. When the female screw 102 and the adjusting screw shaft 104 of the post 100 are released, the neck chucking device can be easily repaired and replaced.

The above embodiments are merely illustrative of the preferred embodiments of the present invention, and the scope of application of the present invention is not limited to these, and may be appropriately changed within the scope of the same idea. For example, the shape and structure of each component shown in the embodiment of the present invention can be modified. Moreover, this invention can be widely used for the chucking of various tubular products besides neck.

As described above, according to the neck chucking device of the cathode ray tube according to the present invention, when the slider is linearly reciprocated by the driving of the cylinder, the outer circumference of the neck having a different diameter is formed by the cooperation of the tip installed to allow the tilt adjustment to the jaw. Since chucking is possible, not only scratches are prevented on the inner circumference of the neck, but chucking is made stable. In addition, since air is injected into the hollow of the neck by driving the blower to prevent the generation of condensed water, defects are prevented and productivity is improved, as well as high quality of the neck can be maintained.

Claims (7)

A cylinder having a rod; Three sliders radially linearly reciprocating at equal intervals by interlocking of levers connected to the rods of the cylinders; Jaws each mounted on the upper surface of the slider to chuck the outer periphery of the neck; Neck chucking device of the cathode ray tube, characterized in that it comprises a table for supporting the neck. According to claim 1, wherein the tip is rotatably mounted around the fixed shaft to chuck the outer periphery of the neck at the top of the jaw, the tip is a first screw hole and the second screw hole formed in the upper and lower ends of the jaw Neck chucking device of the cathode ray tube, characterized in that the inclination is adjusted by the first adjustment screw and the second adjustment screw fastened respectively. The neck chucking device of a cathode ray tube according to claim 2, wherein a guide surface for guiding entry of the neck is inclined downward from the outside to the inside on an upper surface of the tip. The neck chucking device of a cathode ray tube according to claim 1, wherein a blower nozzle is mounted at the center of the table to blow air into the hollow of the neck. The neck chucking device of a cathode ray tube according to claim 1, wherein the table is installed to be elevated along a plurality of guide posts by a spring support. The neck chucking device of a cathode ray tube according to claim 1, further comprising height adjusting means capable of adjusting a chucking position with respect to said necks having different lengths. The method of claim 6, wherein the height adjustment means, A post fixed to the center of the lower surface of the cylinder; An adjustment screw shaft fastened to the lower end of the post and having a handle formed at the lower end thereof; A housing surrounding the post and the adjusting screw shaft, the housing being fixed to the frame; Neck chucking device of the cathode ray tube, characterized in that the fastening is fastened to the lower end of the adjustment screw shaft, the fixing nut attached to the lower end of the housing.

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