KR20010038719A - laser welding device for drive cable of small sealed radiaction source assembly polishing device for the same - Google Patents

Abstract

PURPOSE: A drive cable laser welding apparatus for small scale sealed source assemblies, and a polishing apparatus are provided to substantially increase working efficiency, productivity and quality of products by release-proofing welding the both ends of the cut area of the drive cable to both ends of which a sealed source capsule and an end cap are connected, polishing the welding area of the cut driving cable and mechanically automating the operating process of welding a capsule cap and end cap of the sealed source capsule to the driving cable. CONSTITUTION: The drive cable laser welding apparatus comprises a cable fixing and rotating part (110) rotating the lead-in driving cable (3) in the fixed state, and moving the cable up and down in a certain gap; a cable and cap supporting part (130) collinearly supporting the driving cable (3), a capsule cap and an end cap with spaced apart from the cable fixing and rotating part (110) in a certain gap; and a welding part (150) for release-proofing welding the driving cable (3) which is fixed and rotated by being installed between the cable fixing and rotating part (110) and the cable and cap supporting part (130) and welding to connect the driving cable (3), capsule cap and end cap.

Description

Laser welding device for drive cable of small sealed radiaction source assembly polishing device for the same}

The present invention relates to a system for manufacturing a small sealed source assembly for a treatment device, and more particularly, to prevent loosening welding the both ends of the cutting portion of the driving cable is connected to both ends of the source capsule and the end cap and welding the cut operation cable TECHNICAL FIELD The present invention relates to a driving cable laser welding device and a polishing device for a small sealed source assembly, which polishes a part and mechanically automates a process of welding a capsule cap and an end cap of a source capsule to a driving cable.

In general, Ir-192 sources are widely used for cancer treatment. In particular, since the utility is increased when the source diameter is small and the viva function is high, the remote source is installed in the treatment device to insert the source directly between the cancer tissues to treat the patient's convenience and radiation exposure in recent years. Therapeutic devices are widely used.

Accordingly, such an Ir-192 source constitutes a small sealed source assembly as shown in US Pat. No. 4,861,520, so that the Ir-192 source can be suitably used in a remote control brachytherapy device. As follows.

As shown in FIG. 1, the Ir-192 small sealed source assembly 1 includes a drive cable 3, a sealed source capsule 5 connected to one end of the drive cable 3, and , An end cap 9 connected to the other end of the driving cable 3 to which the source capsule 5 is connected.

The source capsule 5 is composed of a capsule body 6 in which the source 8 is embedded, and a capsule cap 7 fitted to the capsule body 6 and connected to the driving cable 3. . In addition, the source 8 embedded in the capsule body 6 is Ir-192, which is made of a cylindrical shape having a diameter of Φ 0.6 and a length of 3.5 mm to have a radiation amount of 10 Ci per one.

The end cap 9 is a plurality of thin wires are twisted in the form of a rope to close the driving cable 3 having a length of 1.5 m so as not to loosen, is connected by a welding operation. In addition, the capsule cap (7) also serves to connect the source capsule (5) and the driving cable (3) is connected by welding to prevent the other end of the end cap 9 is connected to loosen. The end cap 9, the source capsule 5 and the driving cable 3 are made of SUS 316L.

Looking at the manufacturing process of such a small sealed source assembly (1), first cut the driving cable (3) to a length of 1.5m, and then welds the end cap (9) to one end of the cut driving cable (3) Connect and weld the capsule cap 7 of the source capsule (5) to the other end. Then, the Ir-192 radiation source 8 irradiated with neutrons from the reactor is introduced into the capsule body 6 of the source capsule 5, and then the capsule cap 7 connected with the driving cable 3 is connected to the capsule body 6. When the upper part is sealed by welding, the fabrication of the Ir-192 small sealed source assembly 1 used for the remote control brachytherapy device is completed.

However, in the Ir-192 small sealed source assembly 1 as described above, when the plurality of wires are twisted in the form of a rope, the operation cable 3 is cut using a cutting tool or the like, so that the twisted wires are released. Before cutting, as shown in FIG. 2, the both ends of the cutting part A between 3 and 4 mm must be fixed together with the anti-loosening welding as shown in the two welding spots 10 and 11, respectively. Is required, and after cutting, finishing work is performed to remove the roughened portion 13 at the ends of the welding spots 10 and 11, as shown in FIG. The end cap 9 and the capsule cap 7 must be welded in place, i.e., coaxially and in a straight line. The complex operations of the sealed source assembly 1 are all dependent on manual labor, and therefore, especially in the medical field, Diagnosis There is a problem that can not meet the rapidly increasing demand for the use.

On the other hand, US Patent No. 5,080,278 discloses an apparatus and a method for welding and sealing a metal capsule and a metal cable in which the radiation source is embedded, the apparatus and method are provided in the capsule or the capsule having a pointed end with the cable The stoppers to be fitted are chucked to contact the capacitor terminals while facing each other, and then the cables and the capsules are discharged while the capacitors are discharged in the arc shape while the cables and the capsules are rotated together to seal the capsules at the same time.

By the way, the apparatus and method for welding and sealing the metal capsule and the metal cable as described above are useful in connecting the capsule and the cable directly to each other, but the wires are integrally fixed by anti-loosening welding of the cut portions of the cable. And the finishing work to remove the rough part of the end of the welding point must be done manually, and the driving cable is applied to the capsule body into which the source is inserted based on the difference between the method of welding and sealing the metal capsule and the metal cable. There is a problem that is difficult to apply to the manufacture of the Ir-192 small sealed source assembly to seal the long capsule cap.

Therefore, the present invention is the anti-loos welding of the both ends of the cutting portion of the driving cable connected to both ends of the source capsule and the end cap, trimming and polishing the welded portion of the cut operation cable, capsule cap and end of the source capsule on the driving cable Mechanically automate the process of welding caps, which greatly increases work efficiency and product productivity, and enables precise work to be performed by hand, thus improving the quality of products. It is an object to provide a driving cable laser welding device and a polishing device for a source assembly.

1 is a front view showing the configuration of the Ir-192 small sealed source assembly.

FIG. 2 is an exemplary view showing a state in which anti-loosening welding is performed in advance in order to cut a driving cable constituting the Ir-192 small sealed source assembly shown in FIG. 1. FIG.

Figure 3 is an exemplary view showing a state in which cutting the operation cable welded loosened in Figure 2;

Figure 4 is an exemplary view showing a state connected by welding the capsule cap and the end cap of the source capsule to both ends of the anti-loosening welding cable in Figure 3;

5, 6 and 7 show a driving cable laser welding device for a small sealed source assembly according to an embodiment of the present invention,

5 is a front view.

6 is a side view.

7 is a plan view.

8 is an extract of the cable and the cap support in the driving cable laser welding device for the small sealed source assembly shown in FIGS. 5 and 6 and 7,

8A is a front view.

8B is a plan view.

FIG. 9 shows each holder in the cable and cap support shown in FIG.

9A and 9B are sectional views of a holder for cable support.

Figure 9c is a cross-sectional view of the holder for the capsule cap support.

9D is a cross-sectional view of the holder for end cap support.

FIG. 10 is an excerpt of the base of the laser welding machine from the driving cable laser welding device for the small sealed source assembly shown in FIGS. 4, 5, and 6;

9A is a front view.

9B is a side view.

9C is a plan view.

10 and 11 show a driving cable polishing apparatus for a small sealed source assembly of the present invention,

10 is a plan view.

11 is a front view.

Explanation of symbols on the main parts of the drawings

100: driving cable laser welding device 110: cable fixed feed unit

111: support pillar 113: cable base

115, 223: collet chuck 121: chuck rotating motor

125: up and down cylinder 127: gap adjustment cylinder

128: spacing bar 130: cable and cap support

131: holder base 135: holder moving cylinder

137, 139, 141: holder 138, 140, 142: gas nozzle cap

150: welding part 151: laser welding machine

153: welding machine support base 170: cable lead-out

200: driving cable laser polishing apparatus 210: cable fixed feed unit

211: abrasive cable feed base 230: cable processing portion

231 wheel support 223 wheel spindle

235: Diamond Wheel 237: Wheel Drive Motor

The present invention for achieving the above object is the anti-loos welding of the both ends of the cutting portion of the driving cable is connected to both ends of the source capsule and the end cap and the capsule cap and end cap of the source capsule on the welded portion of the cut operation cable In the welding device, a cable fixing rotary part which rotates while the incoming driving cable is fixed and moves up and down at a predetermined interval, and the driving cable, the capsule cap and the end cap in the same line at a predetermined interval with respect to the cable fixing rotating part. Sealing source including a support cable and cap support portion, the anti-loosing welding of the operation cable is fixed and rotated between the cable fixed rotation portion and the cable and the cap support portion, the welding portion for connecting and welding the driving cable and the capsule cap and the end cap Driving cable laser welding device for assembly;

An apparatus for polishing and polishing the welded part of the operating cable cut by the anti-slip welded part where the source capsule and the end cap are connected, the fixing of the operating cable cut by the anti-loosened welding and transferring the welded part to the grinding processing position. It is characterized in that it provides a driving cable polishing apparatus for a sealed source assembly comprising a cable fixed feed portion to be made, and a cable processing portion for polishing the welded portion of the driving cable is fixed and conveyed to the cable fixed feed portion.

In addition, the cable fixing rotary part is installed horizontally to the vertically movable support base vertically on the upper portion of the table panel, and is installed rotatably around the longitudinal direction on one side of the cable base is drawn into the center A collet chuck fixing the driving cable, a chuck rotary motor mounted on the other side of the cable base on which the collet chuck is installed, a vertical movement cylinder for vertically moving the cable base up and down at regular intervals, and an upper plate of the support column; And a spacing adjusting cylinder for reciprocating the spacing bar between the cable bases,

The cable and the cap support is mounted on the upper surface of the table panel and the holder base is formed of a guide bar which is horizontally extended in the front and rear direction is installed, the movable base is installed to be movable back and forth along the guide bar, the movable body of the guide bar Holder moving cylinder to move in the longitudinal direction and the driving cable is detachably installed in the center of the moving body to support the driving cable fixed to the cable fixed rotation part in the state drawn out to the bottom of the same vertical line, or to support the capsule cap or end cap Has a feature that includes a holder,

The welding unit is a laser welding machine for laser welding one point of the driving cable, the capsule cap and the end cap joint, which is located between the chuck spindle and the holder, and the laser welding machine is mounted on the upper surface of the table panel on one side of the cable and cap support. It is characterized in that it comprises a welder support base for supporting the movable in front and rear, left and right in one state.

In addition, the cable fixed feed unit is installed on the table top plate fixed body formed with a guide groove in the direction of the cable processing portion, a moving body moving along the guide groove of the fixed body, a transfer screw for transferring the moving body in the longitudinal direction of the guide groove, the mobile body The handle is installed to be rotatable about a horizontal direction such as a guide groove with a bearing in the center of the polishing cable transport base consisting of a rotating plate installed on one end of the handle and synchronously rotated, It is characterized in that it comprises a collet chuck consisting of a collet, a collet vice, which is installed on the outside to fix the driving cable drawn in the longitudinal direction of the handle

The cable processing part is coaxially coaxially with a wheel support which is erected vertically on an upper part of the table panel, a wheel spindle which is rotatably installed in a horizontal direction with a bearing in the center of the wheel support, and a wheel spindle. It is characterized by including a conical diamond wheel to be fixed, and a wheel drive motor for transmitting rotational force to the wheel spindle.

Hereinafter, an embodiment of the present invention will be described in more detail based on the accompanying drawings.

5, 6 and 7 show a driving cable laser welding device 100 for a small sealed source assembly according to an embodiment of the present invention. This welding device 100 is the anti-loosing welding of both ends of the cut portion of the driving cable (3) in which the source capsule (5) and the end cap (9) are connected at both ends in the small sealed source assembly (1) shown in FIG. And a device for welding the capsule cap 7 and the end cap 9 of the source capsule 5 to the cut operation cable 3, and the cable fixing rotation part 110, the cable and cap support part 130, and the welding part. 150, the cable lead-out unit 170, the camera 180, and the like.

In other words, the cable fixing rotation part 110 is rotated in a state where the driving cable 3 is fixed and moved up and down at a predetermined interval, so that the support pillar 111 is vertically upward on the table panel 103. Protrudingly installed, the cable base 113 is horizontally installed on the upper portion of the support pillar 111 so as to be movable vertically up and down, and one side of the cable base 113 has a driving cable 3 introduced into the center. The collet chuck 115 for fixing is rotatably installed about the longitudinal direction. In addition, a chuck rotary motor 121 for rotating the collet chuck 115 is mounted to the other side of the cable base 113 on which the collet chuck 115 is installed to protrude downward, and a cable is directly above the support pillar 111. A vertical movement cylinder 125 for vertically moving the base 113 at a predetermined interval is installed, and an interval adjusting cylinder 127 is installed at one side of the support pillar 111 to adjust the vertical movement interval of the cable base 113. Has a configuration.

In the center of the cable base 113, four guide pins (113a) are coupled to the guide hole (111b) formed in the upper plate (111a) of the support pillar (111) to move up and down to protrude downward, collet On the other end of the chuck 115 is installed a cable supply reel 129 rotatably mounted to supply the driving cable (3) that is not anti-loosening welding to the collet chuck 115.

The collet chuck 115 is rotatable about a vertical direction with a cylindrical chuck housing 116 fixedly installed to the cable base 113 and a bearing 117 interposed therein. It is installed, the insertion hole 118a through which the driving cable 3 is inserted from the top to the bottom is formed in the center, and the collet 118b for fixing the inserted driving cable 3 is formed in the lower end, and the upper end of the chuck rotation motor ( The chuck spindle 118 is installed to receive the rotational power from the 121, and the collet vice 119 is installed at the lower end of the chuck spindle 118 to adjust the locking of the collet 118b.

A driven pulley 120 is installed at an upper end of the chuck spindle 118, and a driving pulley 122 is installed at the chuck rotating motor 121, and a belt 123 is formed between the driving pulley 122 and the driven pulley 120. By walking, the chuck spindle 118 is to receive a rotational force from the chuck rotation motor 121 in a belt driving manner.

The gap adjusting cylinder 127 is moved up and down by the up and down cylinder 125 so that when the cable base 113 is raised together with the collet chuck 115 and lowers again, the upper plate 111a of the support pillar 111 and the cable base ( 113 is configured to sandwich the gap adjusting bar 128 therebetween. That is, when the gap adjusting bar 128 is sandwiched between the upper plate 111a of the support pillar 111 and the cable base 113, the lowering stops at a position of about 3-4 mm higher than the initial rising start point, thereby colleting The welding position of the driving cable 3 stopped at a high position of about 3-4 mm while being fixed together with the chuck 115 is raised and has a step of 3-4 mm.

In addition, the cable and cap support 130 is shown in Figures 8a and 8b, the drive cable 3, the capsule cap (7) and the end cap (9) at predetermined intervals with respect to the cable fixing rotation portion (110). It is composed of a holder base 131, three holders 137, 139, 141 provided on the holder base 131 so as to support the same line.

That is, the holder base 131 is mounted on the upper surface of the table panel 103 corresponding to the lower part of the collet chuck 115 of the cable fixing rotation part 110, and the guide bar 133 extending horizontally in the front-rear direction is installed. It consists of a stagnation 132 and a movable body 134 which is installed to be moved forward and backward from the lower part of the collet 118b of the collet chuck 115 along the guide bar 133 of the fixing body 132. The movement of the moving body 134 is mainly performed when the holder moving cylinder 135 is replaced with the holders 137, 139, and 141.

The three holders 137, 139, and 141 are detachably installed in the center of the moving body 134 to draw out the driving cable 3 fixed to the cable fixing rotating part 110 to the lower part on the same vertical line. Supporting the capsule cap 7 or the end cap 9 in the state, as shown in Figs. 9a and 9b, the cable support in which a cable hole 137a for guiding the driving cable 3 is formed in the center thereof. Holder 137, a capsule cap support holder 139 in which a cap seating groove 139a into which the capsule cap 7 is fitted as shown in FIG. 9C is formed, and an end cap 9 as shown in FIG. 9D. End cap support holder 141 is formed is a cap seating groove (141a) is inserted is replaced according to the progress work.

Gas nozzle caps (138, 140) for supplying an inert gas to the welded portion of the driving cable (3), capsule cap (7), end cap (9) supported outside the holders (137, 139, 141) 142 is covered. The caps 138, 140, and 142 are also divided into three types according to the shape of the holders 137, 139, and 141. 142a is formed through, and the gas passage penetrating upward while having a predetermined gap with the outer circumferential surface of the holders 137, 139, 141 in the state covered with the holders (137, 139, 141) ( 138b, 140b and 142b are formed.

In addition, the welding part 150 is installed between the cable fixing rotation part 110 and the cable and the cap support part 130 to prevent loosening welding of the driving cable 3, the driving cable 3 and the capsule cap 7, and It consists of a laser welder 151 and a welder support base 153 to connect weld the end cap 9.

That is, the laser welding machine 151 is one point of the driving cable 3 positioned between the chuck spindle 118 and the holders 137, 139 and 141, the driving cable 3 and the capsule cap 7. And the laser welding of the joint of the end cap 9, the driving cable 3 is rotated by the chuck spindle 118 of the collet chuck 115, it is possible to uniformly weld the circumferential weld. In addition, the laser welding machine 151 has a step of about 3-4 mm by the gap adjusting cylinder 127 in the welding position of the driving cable 3 when the loosening welding of the driving cable 3 is performed. Therefore, by welding two points per step of fixing the driving cable (3) to the collet chuck 115 to be cut between the welding points.

The welder support base 153 allows the laser welder 151 to be finely adjusted by moving the laser welder 151 horizontally back, front, and left and right as shown in FIGS. 10A, 10B, and 10C. As the cable and the cap support part 130, a fixture 156 mounted on the upper surface of the table panel 103 on one side, and a plurality of movable bodies 157 movably coupled to the fixture 156 so as to be movable back and forth, left and right. 158, a welder clamp 159 fixed to the top of the movable body 158 and coupled to the laser welder 151, and a plurality of conveying screws for conveying the movable body 158 up, down, left, and right. 161, 162, and 163.

Meanwhile, the cable lead-out unit 170 pulls out the driving cable 3 passing through the cable and the cap support unit 130 to the lower portion of the table panel 103. 3) a cable take-off reel 177 installed at one end of the table panel 103 and winding the driving cable 3 passing through the rollers 171 and 173. And a tensioner 175 for applying tension to the driving cable 3 between the rollers 171, 173 and the cable take-up reel 177. The distance between the cable lead-out reel 177 and the welding point where the laser welder 151 is located maintains 1.5 m from which the driving cable 3 is cut.

Reference numeral 105 in the drawing is a caster for moving the table 101.

11 and 12 show a driving cable polishing apparatus 200 for a small sealed source assembly according to an embodiment of the present invention. The polishing apparatus 200 is a driving cable (3) in which the portion where the source capsule (5) and the end cap (9) are connected to each other by the driving cable laser welding device for the small sealed source assembly (100) is cut and welded. An apparatus for trimming and polishing the roughened portion 13 of the driving cable 3 as shown in FIG. 3, that is, the cable fixed feed part 210 and the cable processing part 230.

In addition, the cable fixed conveying unit 210 is fixed to the operation cable (3) to prevent the welding cable is cut and welded loosen and to transfer the welded portion to the abrasive machining position, the operation cable ( 3) the collet chuck 221 is fixed.

That is, the polishing cable feed base 211 is provided with a fixture 213 in which the guide groove 214 is formed in the table panel 203 in the direction of the cable processing portion 230, and a guide is provided above the fixture 213. A moving body 215 moving along the groove 214 is installed, and a feeding screw 217 for transferring the moving body 215 in the longitudinal direction of the guide groove 214 is rotatably installed at one side of the fixed body 213. do. In addition, a handle 219 is rotatably installed at the center of the movable body 215 with the bearing 218 interposed therebetween, and synchronously at one end of the handle 219. The rotating rotating plate 220 is installed.

The collet chuck 221 is installed to eccentrically rotate with respect to the handle 219 on the outer side of the rotating plate deviating from the center of the handle 219 to fix the driving cable (3) introduced into the longitudinally penetrating insertion groove (224) The collet 223 and the collet vice 225 which tighten the collet 223 are comprised.

In addition, the cable processing unit 230 is configured to diamond polish the welded portion of the driving cable 3 fixedly conveyed to the cable fixed feed unit 210, the table panel 203 at a point slightly deviated from the handle 219. The wheel support 231 is vertically erected on the upper part, and the wheel spindle 233 can be rotated about the horizontal direction such as the handle 219 with the bearing 232 in the center of the wheel support 231 It is installed so that, the one end of the wheel spindle 233, the rotary plate is located conical diamond wheel (diamond wheel) 235 is fixed coaxially, the other end to the wheel spindle 233 coupling 238 The wheel driving motor 237 is transmitted to transmit the rotational force. In addition, a lower portion of the diamond wheel 235 is provided with a dust container 239 for storing dust generated during polishing.

In the figure, reference numeral 205 denotes a caster for moving the table 201.

The operation of the driving cable laser welding device 100 and the polishing device 200 for a small sealed source assembly according to an embodiment of the present invention configured as described will be described according to some manufacturing processes of the small sealed source assembly 1 as follows. same.

First, two-point loosening prevention welding is performed on both ends of the cut portion of the driving cable 3 using the driving cable laser welding device 100 for a small sealed source assembly.

Looking at this, the driving cable (3) wound on the cable supply reel (129) is inserted into the insertion hole (118a) of the chuck spindle (118) from the top of the collet chuck 115 installed in the cable fixing rotation part 110, It is fixed to the cable lead-out reel 177 through the rollers 171 and 173 and the tensioners 175 of the cable and cap support 130 at the lower side and the cable lead-out 170 installed at the lower side of the table panel 103. do. The collet vice 119 installed at the lower end of the chuck spindle 118 of the collet chuck 115 is rotated in the tightening direction of the collet 118b to fix the driving cable 3 to the chuck spindle 118.

In this state, the welding machine support base 153 of the welding part 150 is adjusted to accurately set the position of the first welding point 10 and the laser welding machine 151 of the driving cable 3, and then the laser welding machine 151. At the same time to drive the chuck rotary motor 121, and inert gas is injected into the gas injection hole (138a) of the gas nozzle cap 138 that is covered in the holder 137 of the cable and cap support 130. . At this time, the chuck rotation motor 121 rotates the chuck spindle 118 of the collet chuck 115 together with the driving cable 3 through the pulleys 120 and 122 and the belt 123, as shown in FIG. 9A. As described above, the laser welder 151 welds the circumferential image of the predetermined first welding point 10 of the rotating driving cable 3 and inertly injected into the gas injection hole 138a of the gas nozzle cap 138. Gas is wrapped around the welding portion through the gas passage (138b) to prevent the activity. This welding process can be accurately confirmed through the camera 180 made of an optical cable.

In this way, when the anti-loosening welding of the first welding point 10 is completed, driving of the laser welding machine 151 and the chuck rotation motor 121 is stopped, and injection of inert gas is blocked. Then, the vertical movement cylinder 125 of the cable fixing rotation part 110 operates to raise the cable base 113 together with the collet chuck 115 from the support pillar 111, and then adjust the gap of the space adjusting cylinder 127. Insert the bar 128 into the gap between the support pillar 111 and the cable base 113 so that the descending position of the cable base 113, which descends again, is about 3-4 mm higher than the initial raising position. At this time, since the driving cable 3 is raised to about 3-4 mm, as shown in FIG. 9B, the second welding point 11 of the driving cable 3 with respect to the laser welding machine 151 is the first welding point ( It is set to a position about 3-4 mm lower than 10).

In the state where the second welding point 11 of the driving cable 3 is set as described above, the laser welding machine 151 is operated as in the welding process of the first welding point 10 described above, and at the same time, the driving cable 3 is turned on. The inert gas is injected into the gas injection hole 138a of the gas nozzle cap 138 and the second welding point 11 is prevented from welding.

As such, when the two-point loosening welding is completed around the cut portion A of the driving cable 3, the collet chuck 115 is released, and then the driving cable 3 is wound around the cable pull-out reel 177 to prevent loosening. Maintain a distance of 1.5m between the welded position and the position to be welded again. Then, the driving cable 3 is fixed to the collet chuck 115 again, and then the same anti-loosening welding process as described above is repeated.

In this way, when all the front end loosening welding of the operation cable 3 is completed, the cutting portion A between the welding spots 10 and 11 of about 3-4 mm is cut by using a cutting tool. The driving cable 3 polishes the roughened portion 13 of the cut portion of the driving cable 3 using the driving cable polishing apparatus 200 for the small sealed source assembly.

That is, the cut operation cable 3 is inserted into the collet 223 of the collet chuck 221 fixed to the rotating plate 220 of the cable fixed feeder 210 in the longitudinal direction and fixed. At this time, the driving cable 3 fixed to the collet chuck 221 allows the cutting portion to protrude slightly forward. Then, the wheel driving motor 237 of the cable processing unit 230 is driven so that the rotational driving force of the motor 237 is transmitted to the diamond wheel 235 via the wheel spindle 233.

In this state in which the diamond wheel 235 is rotated, the feed screw 217 of the cable fixed feeder 210 is operated to cut the cut portion of the driving cable 3 together with the collet chuck 221 on the line of the diamond wheel 235. Next, the rotating plate 220 is rotated through the handle 219. At this time, the cutting part of the driving cable 3 of the collet chuck 221 revolving around the handle 219 in the rotating plate 220 is polished while approaching the rotating diamond wheel 235, the length of the driving cable (3) It has a machining surface that is exactly perpendicular to the direction.

When the polishing operation of one cut portion of the driving cable 3 is completed, the driving of the diamond wheel 235 is stopped, the collet chuck 221 is released, and the polishing machining portion of the driving cable 3 is replaced with the other side. Both ends of the driving cable 3 are polished.

As such, when the polishing processing of the driving cable 3 is completed, the capsule cap of the source capsule 5 at the welding portion of the driving cable 3 is again used by using the driving cable laser welding device 100 for the small sealed source assembly. 7) and the end cap 9 are welded.

Looking at this, first, the anti-loosening welding holder 137 and the corresponding gas nozzle cap 138 mounted on the holder base 131 of the cable and cap support 130 are separated, and then the capsule as shown in Figure 9c Holder 139 for cap welding and thus the gas nozzle cap 140 is fixed. Then, the capsule cap 7 is loaded and fixed in the cap seating groove 139a to the fixed capsule cap welding holder 139, and then the collet chuck installed in the cable fixing rotating part 110 is provided with the polished driving cable 3 ( Inserted into the insertion hole 118a of the chuck spindle 118 from the top of the 115 so that the polished portion is in contact with the connection surface of the capsule cap 7 fixed to the holder 139 at the bottom, and the collet chuck 115 The collet vice 119 installed at the lower end of the chuck spindle 118 of () is rotated in the tightening direction of the collet 118b to fix the driving cable 3 to the chuck spindle 118.

In this state, the welder support base 153 is adjusted again to connect the lower surface of the driving cable 3 to the connection surface of the capsule cap 7 fixed to the holders 137, 139, and 141. ) And then precisely set the position of the laser welding machine 151 to drive the chuck rotary motor 121 and at the same time, the gas nozzle cap 140 covered by the holder 139 of the cable and cap support 130. Inert gas is injected into the gas injection hole 140a. At this time, the chuck rotating motor 121 rotates the chuck spindle 118 of the collet chuck 115 together with the driving cable 3 through the pulleys 120 and 122 and the belt 123, and the laser welding machine 151. ) Is welded along the circumferential surface of the contact portion of the rotating driving cable 3 and the capsule cap (7), the inert gas injected into the gas injection hole (140a) of the gas nozzle cap 140 gas passage 140b ) To wrap around the welding area to prevent activity.

When the connection welding of the capsule cap 7 and the driving cable 3 is completed in this way, the direction of the driving cable 3 is changed, and as shown in FIG. 9D, the holder for the capsule cap welding 139 and the gas nozzle accordingly are shown. After replacing the cap 140 with the end cap welding holder 141 and thus the gas nozzle cap 142, the operation cable as in the connection welding process of the capsule cap 7 and the driving cable 3 as described above (3) and the end cap 9 are welded to each other.

As shown in FIG. 4, when the connecting body of the driving cable 3, the capsule cap 7, and the end cap 9 is formed as described above, the driving cable laser welding device for a small sealed source assembly according to the present invention. The manufacturing process of the small sealed source assembly 1 according to the 100 and the polishing apparatus 200 is completed.

As described above, the present invention is the anti-loos welding of the both ends of the cutting portion of the driving cable connected to both ends of the source capsule and the end cap, trimming and polishing the welded portion of the cut operation cable, the source of the source capsule By mechanically automating the process of welding capsule caps and end caps, you can significantly increase work efficiency and product productivity, as well as perform more precise work than by hand. Will be.

While the invention has been shown and described with respect to particular embodiments, those skilled in the art will recognize that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the appended claims. Anyone can easily know.

Claims (11)

The capsule cap (7) of the source capsule (5) on the cut operation cable (3) to prevent the loosening welding of both ends of the cut portion of the driving cable (3) connected to both ends of the source capsule (5) and the end cap (9) ) And an apparatus for welding the end cap 9, A cable fixing rotating part 110 which rotates in the fixed state of the driving cable 3 drawn in and moves up and down at a predetermined interval; A cable and cap support part 130 supporting the driving cable 3, the capsule cap 7, and the end cap 9 in the same line at a predetermined interval with respect to the cable fixing rotation part 110; An anti-loosening welding of the driving cable 3 installed and fixedly rotated between the cable fixing rotation part 110 and the cable and cap support part 130, the driving cable 3, the capsule cap 7, and the end. Driving cable laser welding device for a sealed source assembly, characterized in that it comprises a welding portion 150 for welding the cap (9). According to claim 1, The cable fixing rotary part 110 is installed on the support column 111 vertically erected on the upper portion of the table panel 103, the cable base 113 and horizontally installed, and the cable base ( The collet chuck 115 is rotatably installed on one side of the 113 to fix the driving cable 3 introduced into the center, and the cable base 113 on which the collet chuck 115 is installed. A chuck rotary motor 121 mounted on the other side to rotate the collet chuck 115, a vertical movement cylinder 125 for vertically moving the cable base 113 at regular intervals, and a top plate of the support pillar 111. Driving cable laser welding device for a sealed source assembly characterized in that it comprises a spacing adjusting cylinder (127) for reciprocating the spacing adjusting bar (128) between (111a) and the cable base (113). According to claim 2, wherein the collet chuck 115 is a cylindrical chuck housing 116 which is fixedly installed perpendicular to the cable base 113, and the bearing 117 in the interior of the chuck housing 116 between; It is installed so as to rotate around the vertical direction and the insertion hole 118a through which the driving cable 3 is inserted from the top to the bottom is formed in the center and the collet 118b for fixing the inserted driving cable 3 in the lower portion ) Is formed and the upper end of the chuck spindle 118 and the lower end of the chuck spindle 118 is installed to receive rotational power from the chuck rotation motor 121 through the pulley 120, 122 and the belt 123. Driving cable laser welding device for a sealed source assembly characterized in that it comprises a collet vice (119) which is installed in the adjusting the locking of the collet (118b). According to claim 1, The cable and cap support 130 is mounted on the upper surface of the table panel 103, the fixed body 132 is installed with a guide bar 133 extending horizontally in the front and rear direction, the guide bar ( A holder base 131 made of a movable body 134 movably moved forward and backward along the 133, a holder moving cylinder 135 for moving the movable body 134 in the longitudinal direction of the guide bar 133; Removably installed in the center of the movable body 134 in the longitudinal direction to support the driving cable (3) fixed to the cable fixed rotation part 110 in the state drawn out to the lower portion on the same vertical line or the capsule cap (7) Or a holder (137) (139) (141) for supporting the end cap (9). The gas nozzle cap of claim 4, wherein an inert gas is supplied to an outside of the holders 137, 139, and 141 to welded portions of the driving cable 3, the capsule cap 7, and the end cap 9. (138) (140) (142) driving cable laser welding device for sealing source assembly characterized in that the cover. The gas nozzle caps (138, 140, 142) of the gas nozzles 138a, 140a, 142a are formed through the side of the gas nozzle cap (138, 140, 142), and the holders (137) (139) ( Sealed source assembly characterized in that the gas passages (138b) (140b) (142b) penetrating upwards having a predetermined gap with the outer circumferential surfaces of the holders (137) (139) (141) in the state covered by 141 is formed. Driving cable laser welding device. The one of the driving cables (3) according to any one of claims 1 to 4, wherein the welding portion (150) is located between the chuck spindle (118) and the holders (137, 139, 141). Laser welding machine 151 for laser welding the junction of the point, the capsule cap 7 and the end cap 9, and the laser welding machine is mounted on the upper surface of the table panel 103 on one side of the cable and cap support 130 Driving cable laser welding device for a sealed source assembly, characterized in that it comprises a welder support base (153) for supporting so as to be movable in the front and rear, left and right directions in a horizontal state. The apparatus of claim 1, further comprising a cable lead portion (170) for drawing the driving cable (3) passing through the cable and the cap support portion (130). In the apparatus for trimming and polishing the welded portion of the driving cable (3) cut by the anti-loosening welding of the portion where the source capsule (5) and the end cap (9) is connected, A cable fixing conveying part 210 which fixes the driving cable 3 which is cut by welding to prevent loosening and transfers the welding part to a polishing processing position; Driving cable polishing apparatus for a sealed source assembly, characterized in that it comprises a cable processing unit 230 for polishing the welded portion of the driving cable (3) fixed and conveyed to the cable fixed feed unit (210). The fixed cable 213 of claim 9, wherein the cable fixed feeder 210 is installed in the table panel 203 and has a guide groove 214 formed in the direction of the cable processing part 230. The moving body 215 moving along the guide groove 214 of the movement, the conveying screw 217 for transferring the moving body 215 in the longitudinal direction of the guide groove 214, the bearing 218 in the center of the moving body 215 A polishing cable including a handle 219 installed rotatably about the same horizontal direction as the guide groove 214 and a rotating plate 220 installed at one end of the handle 219 to rotate therebetween. A collet 223 installed at the outer side of the transfer base 211 and the rotating plate 220 deviating from the center of the handle 219 to fix the driving cable 3 drawn in the longitudinal direction of the handle 219; It characterized in that it comprises a collet chuck 221 consisting of a collet vice 225 Driving cable polishing device for sealed source assembly. The method of claim 9, wherein the cable processing unit 230 is a wheel support 231 which is erected perpendicular to the upper surface of the table panel 203, and the bearing 232 between the center of the wheel support 231 And a wheel spindle 233 which is rotatably installed around the horizontal direction, a conical diamond wheel 235 fixed coaxially to one end of the wheel spindle 233, and a rotational force on the wheel spindle 233. Driving cable polishing apparatus for a sealed source assembly, characterized in that it comprises a wheel drive motor (237) for transmitting.