KR100460054B1 - A chucking device for neck fusion-welding apparatus - Google Patents

Abstract

The present invention relates to a chucking device for a neck fusion apparatus for chucking a neck, comprising: a tubular sleeve; A pushing rod slidably received along the axial direction in the sleeve and having a lower end exposed; At least a pair of cylindrical sliders that are sequentially coupled to the pushing rod at predetermined intervals along the axial direction and each having an inclined surface formed so as to increase a gap toward the outside in a radial direction at an end region facing each other in the axial direction; It is annularly interposed between the sliders and has a slope in contact with the inclined surface of the slider in the radial direction. The outer wall is in close contact with the inner wall surface of the neck when the maximum expansion in the radial direction occurs, the minimum compression in the radial direction of the neck An expandable member having an outer diameter equal to or smaller than an outer diameter of the slider when spaced apart from the inner wall surface; A stop member detachably coupled to the lower end of the pushing rod and in contact with the slider at the lower end thereof; It is characterized in that it comprises a stopper formed in the sleeve to block the upward movement of the top slider. Thereby, the chucking apparatus for the neck fusion apparatus which can prevent the scratch defect of a neck is provided.

Description

Chucking Device for Neck Fusion Device {A CHUCKING DEVICE FOR NECK FUSION-WELDING APPARATUS}

The present invention relates to a chucking device for a neck fusion apparatus.

Generally, a cathode ray tube is provided in front of the panel on which an image is projected, a funnel shape in which funnels are formed, and a funnel bonded to the rear of the panel by pleat sealing, and a neck bonded to the rear side of the funnel by pressure welding. Has

Necks are generally classified into two types, a neck formed of a cylindrical hollow tube and a flare having a funnel portion enlarged at an end of the hollow tube.

The process of press-fusion welding the neck on the rear side of the funnel is performed by first cutting the body part by a certain length, placing the neck above the coaxial line with the cut part of the body part, and then chucking the device by chucking the neck It is made by pressing the neck downward to the injection cutting part.

8 is a cross-sectional view of a state in which a conventional chucking device is inserted into a neck, and the conventional chucking device 135 is slidably accommodated in the tubular sleeve 137 and the sleeve 137 along the axial direction. And a pushing rod 140 having a lower end exposed, a plurality of cylindrical sliders 146 slidably coupled to an outer side of the sleeve 137, and disposed between each slider 146 and moved by the slider 146. An expansion member 154 radially expanded with respect to the axis of the neck 110 and in close contact with the inner wall surface of the neck 110 and a lower end slider 146 detachably coupled to the lower end of the pushing rod 140. And a stop member 160 in contact with the stopper, a stop 162 formed in the sleeve 137 to prevent upward movement of the slider 146 at the top, and between the top slider 146 and the stop 162. A spacer 152 provided to prevent upward movement of the slider 146. And it has a pair of nuts 144 to prevent separation of the fastening to the lower end of the pushing rod 140, stop member 160.

In particular, in the conventional expansion member 154, the outer wall of the expansion member 154 is in close contact with the inner wall surface of the neck 110 when the expansion member 154 is inflated in the radial direction, the expansion member 154 is in the radial direction The outer wall of the expansion member 154 is configured to protrude outward radially by a predetermined height with respect to the outer wall of the slider 146 when the minimum compression to spaced apart from the inner wall surface of the neck 110.

By this configuration, the chucking device 135 is inserted into the neck 110 so that the stop flange 150 of the slider 146 at the top of the chucking device 135 is completely in contact with the upper surface of the neck 110. As a result, the pushing rod 140 is moved upward by a predetermined distance by a driving means (not shown). When the pushing rod 140 moves upward, the sliders 146 coupled to the outer circumferential surface of the sleeve 137 also move upward by a predetermined distance in association with the pushing rod 140. At this time, as the sliders 146 move upward, the expansion member 154 inclined contact with each slider 146 is inflated radially with respect to the inner wall surface of the neck 110, that is, the axis of the neck 110. Thus, the outer wall of the expansion member 154 is completely in contact with the inner wall surface of the neck 110, thereby completing the chucking operation of the neck 110 by the chucking device 135.

After the chucking device 135 chucks the neck 110, the neck 110 is press-bonded to a funnel (not shown).

After the neck 110 is press-fused to the funnel, the chucking device 135 is chucked from the neck 110. At this time, when the pushing rod 140 is moved downward by a predetermined distance, the respective sliders 146 are also moved downward by a predetermined distance. As each slider 146 moves downward, the expansion member 154 is minimally compressed in the radial direction, so that the outer wall of the expansion member 154 is spaced apart from the inner wall surface of the neck 110.

Then, the chucking device 135 is chucked from the neck 110 by simultaneously moving the sleeve 137 and the pushing rod 140 upward.

By the way, in the conventional chucking apparatus for neck fusing apparatus, the outer wall of the expansion member protrudes a predetermined height from the outer wall of the slider, that is, the clearance between the inner wall surface of the neck and the outer wall of the expansion member is small, and the chucking device is necked. When moving upward along the inner wall of the neck to release chucking from the neck, the outer wall of the neck is supported by the neck conveying unit so that the center of the neck and the center of the chucking device do not always coincide, so that the outer wall of the expansion member contacts the inner wall of the neck. There is a lot of concern that will cause scratch failure.

Accordingly, an object of the present invention is to provide a chucking device for a neck fusion apparatus that can prevent scratch defects on the inner wall of the neck.

1 is a side view of the neck fusion apparatus according to the present invention,

2 is an enlarged partial view of FIG.

Figure 3 is an exploded perspective view of the chucking device according to the first embodiment of the present invention used for a neck (flareless) consisting of a cylindrical hollow tube,

4 is a cross-sectional view of a state in which the chucking device of FIG. 3 is inserted into a neck;

5 is a cross-sectional view of the chucking device of FIG. 3 chucking the neck;

6 is an exploded perspective view of a chucking device according to a second embodiment of the present invention for use in a neck having a funnel portion expanded to the end of a hollow tube;

7 is a cross-sectional view of the state in which the chucking device of Figure 6 is inserted into the neck,

8 is a cross-sectional view of a state in which a conventional chucking device is inserted into a neck.

* Explanation of symbols for the main parts of the drawings

10: neck 24: lifting unit

35: chucking device 37: sleeve

40: Pushing Rod 46: Slider

50: stop flange 52: spacer

54: expansion member 60: stop member

62: stop

According to the present invention, there is provided a chucking device for a neck fusing device for chucking a neck, the sleeve comprising: a tubular sleeve; A pushing rod slidably received along the axial direction in the sleeve and having a lower end exposed; At least one pair of cylindrical sliders each of which is sequentially coupled to the pushing rod at a predetermined interval along an axial direction and each of which has an inclined surface formed so as to increase a clearance gap radially outward in an end region facing each other in the axial direction; Interposed between the sliders in an annular manner and having a slope in contact with the inclined surface of the slider in a radial direction, the outer wall is in close contact with the inner wall surface of the neck when the maximum expansion in the radial direction, the minimum compression in the radial direction An expansion member having an outer diameter equal to or smaller than an outer diameter of the slider when spaced apart from an inner wall surface of the neck; A stop member detachably coupled to a lower end of the pushing rod to contact the slider at a lower end thereof; Is formed by the sleeve is achieved by the chucking device for neck fusion device characterized in that it comprises a stop jaw to block the upward movement of the slider at the top.

Here, the sleeve may be configured to further include an extension extending to the inner diameter surface of the lowermost slider along the outer surface of the pushing rod.

In addition, it is very advantageous that the uppermost slider has a stop flange limiting the insertion depth of the neck, and a spacer is disposed between the stop flange and the stop jaw to prevent upward movement of the top slider.

In addition, it is preferable that a male screw portion is formed at the lower end of the pushing rod so that the nut can be fastened. And, it is more effective that the expansion member includes a portion cylindrical contact portion and a connecting portion for elastically connecting the respective contact portions.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a side view of the neck fusion apparatus according to the present invention, Figure 2 is a partially enlarged view of FIG. As shown in these figures, the neck fusion device includes a funnel stacking portion 16 on which the funnel 12 is stacked, and a neck 10 above the axis of the funnel 12 stacked on the funnel stacking portion 16. The neck conveyance part which does not show in figure conveys, the elevating part 24 which elevates and moves the neck 10 conveyed by the neck conveyance part toward the funnel 12, and the neck 10 is moved up and down by the elevating part 24, and the funnel 12 In contact with the cut portion 14 of the), it has a burner 26 for heating the mutual contact area.

The column 18 is erected on one side of the funnel mounting portion 16, and the fixing portion 20 fixed in the radial direction with respect to the longitudinal direction of the column 18 is coupled to the edge surface of the column 18. . The fixed part 20 is provided with the vertical arm 22, and the lower part of the vertical arm 22 is provided with the lifting part 24 which moves up and down by the vertical arm 22 extended in length.

The edge surface of the elevating portion 24 forms a rail block shape so that the elevating portion is engaged with each other in a dovetail shape with respect to the rail formed on the edge surface side of the column 18, and the elevating portion 24 has a neck 10 and a funnel 12. The burner driver 28 which drives the burner 26 which heats the contact area of (circle) is rotated. The burner support part 32 which supports the burner 26 is provided between the burner drive part 28 and the burner 26. As shown in FIG.

On the other hand, the lifting unit 24, the chucking device 35 is inserted into the neck 10 to chuck the neck 10, the lifting device 24 is elevated in the vertical direction in the center region of the lifting unit 24, chucking At the top of the device 35 is a servomotor 30 for controlling the lifting height of the chucking device 35.

Figure 3 is an exploded perspective view of the chucking device according to the first embodiment of the present invention used for the neck (10a, flareless) consisting of a cylindrical hollow tube. As shown, the chucking device 35 according to the present invention for chucking the neck 10a has a tubular sleeve 37 inserted into the neck 10a and slides along the axial direction in the sleeve 37. A pushing rod 40 movably received and exposed at its lower end, a plurality of sliders 46 slidably coupled to the outside of the sleeve 37, and disposed between each slider 46, It has the expansion member 54 which expands radially with respect to the axis of the neck 10a by a movement, and is in intimate contact with the inner wall surface of the neck 10a.

The sleeve 37 extends downward along the outer surface of the pushing rod 40 and has an extended portion 39 formed to extend to the inner diameter surface of the lower slider 46c, which will be described later. A stop jaw 62 is formed to block the upward movement of the slider 46a. And, the upper side of the sleeve 37 is provided with a connecting bush 38 is formed with a plurality of fastening holes 41 to be coupled to the driving means (not shown).

At the end of each slider 46 in contact with the expansion member 54, a predetermined inclined surface 48 is formed to contact the inclined surface 56 of each expansion protrusion. In the present embodiment, three sliders 46 are shown coupled to the pushing rod 40, and the upper slider 46a, the middle slider 46b, and the lower part are sequentially sequentially from the top of the three sliders 46. This is referred to as a slider 46c. The upper slider 46a is provided with a stop flange 50 for close contact with the upper end surface of the neck 10a to prevent upward movement of the neck 10a and to limit the insertion depth of the neck 10a. When the neck 10 and the funnel 12 are fused at the plate surface of the stop flange 50, a plurality of gas discharge holes 51 through which gas is discharged to the outside is formed through the axial direction. In addition, a spacer 52 is disposed between the stop flange 50 and the stop jaw 62 to prevent upward movement of the upper slider 46a when the neck 10a is used.

The expansion member 54 has an inclined surface 56 inclined toward both sides of the pushing rod 40 from both edges thereof, and is in surface contact with the inclined surface 48 of each slider 46 in a radial direction with respect to the axis of the neck 10a. And a partial cylindrical contact portion 55 in contact with the inner wall surface of the neck 10a and a connecting portion 57 elastically connecting the respective contact portions 55 to each other. On the other hand, the outer diameter of the expansion member 54 when the minimum compression in the radial direction with respect to the axis of the neck 10a is made smaller than the outer diameter of the slider 46. Thus, when the chucking device 35 is moved upward along the inner wall surface of the neck 10a to release the chucking from the neck 10a, the contact portion 55 of the expansion member 54 is predetermined from the outer wall of the slider 46. Since it is deeply recessed, the scratch defect of the inner wall surface of the neck 10a by the expansion member 54 can be prevented. Here, each contact portion 55 is mainly formed of a carbon material so as not to damage the neck 10a even if the inner wall surface of the neck 10a is in contact, the connection portion 57 is preferably made of a spring that can be elastically deformed. Do.

A stop member 60 is detachably coupled to the lower end of the pushing rod 40 to prevent downward movement of the lower slider 46c by contacting the lower slider 46c. In addition, since the male thread 42 to which the nut 44 is fastened is formed at the lower end of the pushing rod 40, the spacer 52, the slider 46, and the expansion member 54 coupled to the pushing rod 40. When disassembling them, after loosening the nut 44 fastened to the lower end of the pushing rod 40, it is possible to simply disassemble them.

Meanwhile, the operation of the chucking device 35 and the fusion process of the neck 10 according to the first embodiment of the present invention will be briefly described with reference to FIGS. 4 and 5 as follows.

First, when the funnel 12 cut by a certain length is transferred to the neck fusion apparatus, the neck 10a is disposed above the coaxial line of the cut portion 14 of the funnel 12 by the neck transfer unit. When the arrangement of the neck 10a is completed, the vertical arm 22 extends downward to lower the lifting unit 24 by a predetermined distance, whereby the chucking device 35 is the neck 10a as shown in FIG. Will be inserted into the.

When the chucking device 35 is inserted into the neck 10a and the stop flange 50 of the upper slider 46a of the chucking device 35 comes into close contact with the upper surface of the neck 10a, driving means (not shown) Is to move the pushing rod 40 up a predetermined distance. When the pushing rod 40 moves upward, the sliders 46 coupled to the outer circumferential surface of the sleeve 37 also move upward by a predetermined distance as shown in FIG. 5. At this time, since the expansion member 54 inclined contact with each slider 46 is disposed between each slider 46, each slider 46 is moved upward while moving the expansion member 54 in the neck 10a. It is pushed to the wall surface, and thus the contact portion 55 of the expansion member 54 is in close contact with the inner wall surface of the neck 10a, thereby completing the chucking operation of the neck 10a by the chucking device 35.

As such, when the chucking of the neck 10a by the chucking device 35 is completed, the neck 24 chucked to the chucking device 35 by lowering the lifting unit 24 by the downward length extension of the vertical arm 22 again. 10a) is pressed downwardly to the cutting portion 14 of the funnel 12, and at the same time, fusion between the neck 10a and the funnel 12 is achieved by the injection of the flame by the burner 26 into the mutually contacting area. You lose.

After the neck 10a is press-fused to the funnel 12, the chucking device 35 is chucked from the neck 10a. At this time, when the pushing rod 40 is moved downward by a predetermined distance, the respective sliders 46 are also moved downward by a predetermined distance. As each of the sliders 46 moves downward, the expansion member 54 is minimally compressed in the radial direction, whereby the contact portion 55 of the expansion member 54 is spaced apart from the inner wall surface of the neck 10a.

Then, the sleeve 37 and the pushing rod 40 are simultaneously moved upward to release the chucking device 35 from the neck 10a. At this time, since the contact portion 55 of the expansion member 54 is recessed a predetermined depth from the outer wall of the slider 46, it is possible to prevent scratches on the inner wall surface of the neck 10a by the expansion member 54.

On the other hand, as described above, the rear side of the funnel (12) by using the neck (10b, flare) having a funnel portion expanded to the end of the hollow tube without using the neck (10a, flareless) formed of a cylindrical hollow tube In the case of welding to a part, the chucking device 35 is replaced by the following process.

That is, as shown in Figures 6 and 7, when using the neck (10b, flare) having a funnel portion expanded to the end of the hollow tube, first, the pushing rod 40 of the chucking device 35 described above Loosen the fastening nut 44 fastened to the bottom.

When the nut 44 is loosened, the slider 46, the expansion member 54, and the stop member 60 disposed on the outer side of the sleeve 37 are separated downward from the axial direction of the pushing rod 40. As shown in FIG. 5, only the upper slider 46a is replaced, and other components, that is, the respective slider 46, the expansion member 54, and the stop member 60 are sequentially rearranged. At this time, since the chucking device 35 used for the neck 10b does not require the use of the spacer 52 because the length of the upper slider 46a is relatively long on the length of the neck 10b, the upper slider 46a is not required. ), It is not necessary to fasten the spacer 52 as well. In addition, since the outer diameter of the expansion member 54 is smaller than the outer diameter of the slider 46 when the minimum compression in the radial direction with respect to the axis of the neck 10b, the chucking device 35 is released from the neck 10b. In order to move upward along the inner wall surface of the neck 10b, it is possible to prevent scratch failure of the inner wall surface of the neck 10b by the expansion member 54.

In this manner, after loosening the nut 44, removing the spacer 52 and replacing only the upper slider 46a, other components are used again for the neck 10b in which the funnel is formed by repositioning and tightening the nut 44. The chucking device 35 can be easily replaced.

The process of fusing the neck 10b to the funnel 12 by chucking the neck 10b with the replaced chucking device 35 and releasing the chucking device 35 from the neck 10b is the same as described above. Omit.

Thus, according to the present invention, the outer diameter of the expansion member is smaller than the outer diameter of the slider at the time of minimum compression of the expansion member, which expands and contracts radially with respect to the axis of the neck and adheres to or is spaced from the inner wall surface of the neck, so that the chucking device is removed from the neck By preventing the outer wall of the expansion member from contacting the inner wall surface of the neck when chucking is released, it is possible to prevent scratches on the inner wall of the neck.

Meanwhile, in the above embodiments, the outer diameter of the expansion member is smaller than the outer diameter of the slider at the time of the minimum compression of the expansion member. However, the outer diameter of the expansion member and the outer diameter of the slider may be the same at the minimum compression of the expansion member. Of course.

As described above, according to the present invention, when the chucking device is chucked from the neck, the outer wall of the expansion member does not come into contact with the inner wall surface of the neck, thereby preventing scratch defects on the inner wall surface of the neck. An apparatus is provided.

Claims (6)

In the chucking device for the neck fusion apparatus for chucking the neck, A tubular sleeve; A pushing rod slidably received along the axial direction in the sleeve and having a lower end exposed; At least one pair of cylindrical sliders each of which is sequentially coupled to the pushing rod at a predetermined interval along an axial direction and each of which has an inclined surface formed so as to increase a clearance gap radially outward in an end region facing each other in the axial direction; Interposed between the sliders in an annular manner and having a slope in contact with the inclined surface of the slider in a radial direction, the outer wall is in close contact with the inner wall surface of the neck when the maximum expansion in the radial direction, the minimum compression in the radial direction An expansion member having an outer diameter equal to or smaller than an outer diameter of the slider when spaced apart from an inner wall surface of the neck; A stop member detachably coupled to a lower end of the pushing rod to contact the slider at a lower end thereof; And a stopper formed in the sleeve to prevent upward movement of the slider at the top. The method of claim 1, And the sleeve further comprises an extension part extending along the outer surface of the pushing rod to the inner diameter surface of the lowermost slider. The method of claim 1, The uppermost slider has a stop flange for limiting the insertion depth of the neck chucking device for the neck fusion apparatus. The method of claim 1, A chucking device for a neck fusion device, characterized in that a spacer is disposed between the stop flange and the stop jaw to prevent upward movement of the top slider. The method of claim 1, The lower end of the pushing rod is a chucking device for a neck fusion apparatus, characterized in that the male screw portion is formed so that the nut can be fastened. The method of claim 1, And said expandable member comprises a partially cylindrical contact portion and a connecting portion for elastically connecting said respective contact portions.