Adapter structure of extention cable for CO2 arc welder

专利摘要:
The present invention relates to an adapter structure of an extension cable for a CO2 arc welder, and more particularly, to protrude a stepped portion inside an adapter plug which is coupled to both ends of the extension cable for a CO2 arc welder and into which a spring liner embedded in the extension cable is inserted. The inner part of the adapter nipple which is fastened to the spring end of the spring liner and fastened to one end of the adapter plug forms a cover insertion part into which the cover of the spring liner is inserted, and the end of the adapter plug when fastening the adapter nipple to the adapter plug. Extension of the CO2 arc welder to prevent the CO2 gas supplied through the gas hose of the extension cable from flowing into the spring liner and leaking or flowing back through the packing and the chuck between the part and the step of the adapter plug. It relates to the adapter structure of the cable. The present invention is coupled to both ends of the extension cable 40 for the CO2 arc welder, respectively, and the nipple fastening portion 4 is formed inside one end of the adapter plug 1 installed so as to surround the grip cover 49 on both sides. A cable coupling part 2 is formed at an outer side of the end, and a hose coupling part 3 to which a gas connecting pipe 48 is coupled is formed at an outer side of the end, and a spring 7 and a spring inside the adapter plug 1 are formed. The cover 8 is formed to surround the outside of the 7) and a spring liner 6 connected to the extension cable 40 is inserted therein, and the nipple fastening portion 4 of the adapter plug 1 is located at the center of one end. An adapter nipple having a wire through hole 14 formed therein and a spring fastening portion 16 fastened to an end portion of the spring 7 of the spring liner 6 inside the other end portion thereof and a male screw portion 15 formed on one side of the outer circumferential surface thereof. 13) to the adapter structure of the extension cable for the arc welding machine Then, a cover insertion portion 17 into which the cover 8 of the spring liner 6 is inserted is formed at one side of the inner circumferential surface of the adapter nipple 13, and a nipple fastening formed at one end of the adapter plug 1. A stepped portion 5 protrudes from the rear inner circumferential surface of the portion 4, and the end of the adapter nipple 13 and the adapter nipple 13 when the adapter nipple 13 is fastened to the nipple fastening portion 4 of the adapter plug 1. And a packing 9 interposed between the stepped portions 5 of the adapter plug 1, and an end portion and the packing of the adapter nipple 13 fastened to one end of the adapter plug 1; Between the (9) is characterized in that the chuck (10) formed integrally with the tapered portion (12) formed with the incision (12a) in front of the ring-shaped body portion 11 is inserted and fastened.
公开号:KR20020042604A
申请号:KR1020020027525
申请日:2002-05-17
公开日:2002-06-05
发明作者:이재돈
申请人:이재돈；경성용접재 주식회사；
IPC主号:

专利说明:

Adapter structure of extention cable for CO2 arc welder
[14] The present invention relates to an adapter structure of an extension cable for a CO2 arc welder, and more particularly, to protrude a stepped portion inside an adapter plug which is coupled to both ends of the extension cable for a CO2 arc welder and into which a spring liner embedded in the extension cable is inserted. The inner part of the adapter nipple which is fastened to the spring end of the spring liner and fastened to one end of the adapter plug forms a cover insertion part into which the cover of the spring liner is inserted, and the end of the adapter plug when fastening the adapter nipple to the adapter plug. Extension of the CO2 arc welder to prevent the CO2 gas supplied through the gas hose of the extension cable from flowing into the spring liner and leaking or flowing back through the packing and the chuck between the part and the step of the adapter plug. It relates to the adapter structure of the cable.
[15] In general, CO2 arc welding generates electric arc between the continuously supplied consumable electrode (wire) and the base material to be welded, while simultaneously spraying pure CO2 gas through the gas nozzle formed at the tip of the torch to protect the arc and melted paper. It is widely used in various industrial sites as a welding method to push out and block air around the welded portion to prevent oxidation and nitriding of the weld metal to form a good welded portion.
[16] As shown in FIG. 1, the CO 2 arc welding used as described above is connected to a welding machine 31, which is a device for supplying and controlling electric power, and a gas cylinder 30 for supplying CO 2 gas, and having a welding rod (wire) wound thereon. Torch 35 is connected to the feeding device 32, and in the case of an extensive work site that needs to work up and down a large ship or steel structure such as a shipyard or a heavy industry site, the equipment is transported to the work place. Since it is extremely difficult to use, it is supplied by the wire feeding device 32 and the extension cable 40 in which the adapter 34 is fixedly installed at both ends between the wire feeding device 32 and the torch 35. An extension feeding device 36 which draws a welding rod (wire) toward the torch 35 and supplies the same is used.
[17] The extension cable 40 includes a power line 42 for supplying power to the wire 45 inside the rubber tube 41 having high flexibility and electrical insulation, a wire supply device 32, a motor, an arc start compensation circuit, A control line 43 for controlling a control circuit, an output stabilization circuit, an overload protection device, a switch switching circuit, and the like, and a gas hose 44 to which CO 2 gas is supplied from the gas cylinder 30 are incorporated. There is a spring liner 6 to guide the wire 45 continuously supplied by the wire feeding device 32 to go straight without bending in the gas hose 44, the spring liner 6 The wire 45 is installed to surround the outside of the spring 7 and the spring 7 is guided to prevent the CO 2 gas flowing inside the gas hose 44 is introduced into the spring 7 to flow back It consists of the cover 8 which becomes.
[18] In addition, the adapters 34 respectively installed at both ends of the extension cable 40 have a nipple fastening portion 4 formed at the inner side of one end and the outer side of the other end as shown in FIGS. 2 and 3. The adapter plug 1 having the cable coupling part 2 formed thereon and the hose connection part 3 formed at one outer side thereof, and the wire through hole 14 formed at one side thereof, and the spring fastening portion 16 all over the inner circumferential surface of the other side. A male thread portion 15 is formed at one side of the outer circumferential surface thereof, and an adapter nipple 13 fastened to the nipple fastening portion 4 formed at one end of the adapter plug 1 and a hose fastening of the adapter plug 1. A control line connector 47 drawn from the gas connecting pipe 48 fastened to the part 3, the extension cable 40 coupled to the cable coupling part 2 of the adapter plug 1, and the adapter plug. It is installed to surround both sides of the (1) is composed of a grip cover 49 is coupled to the bolt (50) .
[19] In the conventional adapter structure of the extension cable configured as described above, when the adapter plug 1 and the adapter nipple 13 are fastened, the cable coupling portion 2 of the adapter plug 1 is connected to one end of the extension cable 40. After inserting into the coupling, as shown in FIG. 3, the spring liner 6 inserted into the extension cable 40 passes through the adapter plug 1 to the end of the spring liner 6. The spring fastening portion 16 of the adapter nipple 13 is fastened to a spring 7 protruding from the portion, and then an adapter plug (using a male screw part 15 formed on one side of the outer surface of the adapter nipple 13) is used. It is fixed by fastening to the nipple fastening portion 4 formed on one side inner peripheral surface of 1).
[20] However, the conventional extension cable adapter made as described above is inserted into the end of the adapter nipple 13 and the inside of the adapter plug 1 coupled to one end of the adapter plug 1 as shown in FIG. Since a gap is inevitably generated between the cover of the spring 7 of the spring liner 6 which is fastened to the adapter nipple 13, the gas hose in the long extension cable 40 reaching 20 m to 30 m. The CO 2 gas supplied through the 44 flows into the spring liner 6 through such a gap and leaks to the outside through the wire through hole 14, or the gas hose 44 inside the spring of the spring liner 6 ( 7) As the internal pressure difference flows back to the gas cylinder 30 through the inside of the spring 7, the pressure of the CO 2 gas is remarkably dropped, and the supply of CO 2 gas at the end of the torch 35 becomes unstable. Due to the surrounding area of the weld Failure to act as a protective shielding gas group properly was a fatal problem that the welding defects such as bubbles are generated on the weld.
[21] In addition, in the conventional extension cable adapter, not only the problem of CO2 gas leakage or backflow during the welding operation, but also the CO2 gas leakage continuously occurs during the movement, rest time and non-working of the workplace, so that the shipyard and the heavy industry site As described above, the cost loss due to leakage of CO2 gas was very serious in a large-scale work site in which a plurality of CO2 arc welders connected to the extension cable 40 were used.
[22] In order to solve the above problems, the present invention is coupled to both ends of the extension cable for the CO2 arc welder to form a protruding step in the inner side of the adapter plug into which the spring liner embedded in the extension cable is inserted, and is fastened to the spring end of the spring liner. The inner part of the adapter nipple which is fastened to one end of the adapter plug forms a cover insertion part into which the cover of the spring liner is inserted, and the packing and the chuck between the end of the adapter plug and the stepped part of the adapter plug when the adapter nipple is fastened to the adapter plug. By making it tightly sealed, the technical problem is to prevent the CO 2 gas supplied through the gas hose of the extension cable from flowing into the spring liner and leaking or flowing back.
[23] In order to achieve the above technical problem, the present invention is coupled to both ends of the extension cable for the CO2 arc welder, the nipple fastening portion is formed on the inner side of one end of the adapter plug which is installed to wrap the grip cover on both sides, and the other end of the cable coupling portion Is formed and a hose connection portion is formed on the outer side is coupled to the gas connection pipe, the inside of the adapter plug is made of a cover surrounding the spring and the outside of the spring and the spring liner connected from the extension cable is inserted and installed, the adapter plug The nipple fastening portion of the CO2 arc welding machine is formed with a wire hole formed at the center of one end, a spring fastening part is formed at the spring end of the spring liner at the other end, and an adapter nipple is formed at the outer circumferential surface. In the adapter structure of the cable, A cover insert portion into which the cover of the spring liner is inserted is formed at one side of the inner peripheral surface of the nipple, and a stepped portion is formed at the rear inner peripheral surface of the nipple fastening portion formed at one end of the adapter plug, and the adapter nipple is fastened to the nipple of the adapter plug. When the part is fastened to the end portion of the adapter nipple and the adapter plug between the stepped through the packing characterized in that the fastening, and the end of the adapter nipple fastened to the end of the adapter plug and the packing between the end It is characterized in that the chuck is formed integrally with the tapered portion formed in the incision portion in front of the body portion is fastened.
[1] 1 is a system diagram showing a connection state of a general CO2 arc welder.
[2] Figure 2 is an exploded perspective view showing an adapter of a typical extension cable.
[3] 3 is a cross-sectional view showing the adapter structure of the extension cable according to the prior art.
[4] 4 is a sectional view showing a main portion of an adapter structure of an extension cable according to the present invention;
[5] Figure 5a is a cross-sectional view showing another embodiment of the present invention.
[6] 5B is a perspective view showing a chuck used in another embodiment of the present invention.
[7] <Description of the symbols for the main parts of the drawings>
[8] 1 Adapter plug 2 Cable connection 3 Hose connection
[9] 4: nipple fastening part 5: stepped part 6: spring liner
[10] 7: spring 8: cover 9: packing
[11] 10: chuck 11: body portion 12: taper portion
[12] 12a: incision 13: adapter nipple 14: wire through
[13] 15: male thread portion 16: spring fastening portion 17: cover insertion portion
[24] Hereinafter, the present invention will be described in detail with reference to FIGS. 4 and 5 to achieve the above object.
[25] Figure 4 is a cross-sectional view showing the main part of the adapter structure of the extension cable according to the present invention, Figure 5a is a cross-sectional view showing another embodiment of the present invention, Figure 5b is a perspective view showing a chuck used in another embodiment of the present invention. .
[26] As shown in FIG. 4, in the adapter structure of the extension cable according to the present invention, the adapter plug 1 is installed to be coupled to both ends of the extension cable 40 for the CO2 arc welder, and the grip cover 49 is wrapped on both sides. The nipple fastening portion 4 is formed at one end of the inner side), and a cable coupling part 2 is formed at the outer end of the other end thereof, and a hose fastening part 3 is formed at the outer one side to which the gas connecting pipe 48 is coupled. An adapter plug 1 includes a spring 7 and a cover 8 surrounding the outside of the spring 7, and a spring liner 6 connected from the extension cable 40 is inserted into the adapter plug 1, and the adapter plug is installed. The nipple fastening portion 4 of (1) has a wire through hole 14 formed at the center of one end thereof, and a spring fastening portion 16 fastened to the end of the spring 7 of the spring liner 6 inside the other end thereof. Adapter having a male thread portion 15 formed on one side of the outer 13 is a configuration that is signed is the same as the adapter of a conventional cable extension.
[27] In addition, the adapter structure of the extension cable according to the present invention, as shown in Figure 4, the cover insertion portion 17 into which the cover 8 of the spring liner 6 is inserted into one side of the inner circumferential surface of the adapter nipple 13. Is formed, and a stepped portion 5 protrudes from the rear inner circumferential surface of the nipple fastening portion 4 formed inside the one end of the adapter plug 1, and the adapter nipple 13 is nipple of the adapter plug 1. When fastening to the fastening portion 4 is characterized in that the fastening via the packing (9) between the end of the adapter nipple 13 and the stepped portion 5 of the adapter plug (1).
[28] The assembly and operation relationship of the adapter structure of the extension cable according to the present invention configured as described above are as follows.
[29] In the adapter structure of the extension cable according to the present invention, when the adapter plug 1 is installed at one end of the extension cable, the spring liner 6 drawn out from the extension cable passes through the inside of the adapter plug 1, and then the spring liner. Insert the well-known sealing packing 9 made of synthetic rubber into the outer side of the end of the cover 8 of (6), and then fasten the adapter nipple 13 to the end of the spring (7) of the spring liner (6). Done. At this time, the spring 7 end of the spring liner 6 is fastened to the spring fastening portion 16 formed on the inner inner circumferential surface of the adapter nipple 13, and the cover 8 end of the spring liner 6 is the adapter nipple. It is inserted into the cover insertion part 17 formed in the outer inner peripheral surface of (13).
[30] When the adapter nipple 13 coupled with the spring liner 6 is fastened to the nipple fastening portion 4 of the adapter plug 1, the male thread portion 15 formed on the outer surface of the adapter nipple 13 is nipple. It is tightened while being fastened to the fastening part (4). At this time, when the adapter nipple 13 is fastened, the packing 9 inserted into the cover 8 of the spring liner 6 outside protrudes from the nipple fastening portion 4 of the adapter plug 1. (5) tightly seals between the inner circumferential surface of the adapter plug (1) and the outer surface of the cover (8) of the spring liner (6), so that the adapter plug through the gas hose built into the extension cable (40) from the gas cylinder (1) is to prevent the CO2 gas flowing into the spring 7 of the spring liner 6 to flow back or leak out through the wire through hole (14).
[31] In addition, as another embodiment of the adapter structure of the extension cable according to the present invention between the end of the adapter nipple 13 and the packing 9 fastened to one end of the adapter plug 1 as shown in Figure 5a By inserting the chuck 10 in which the tapered part 12 in which the several incision part 12a was formed in front of the ring-shaped trunk part 11 is integrally formed as shown in FIG. As the adapter nipple 13 is fastened to the adapter plug 1, the end portion of the trunk portion 11 of the chuck 10 is pressed against the packing 9, and at the same time, the taper portion of the chuck 10 ( 12 is elastically contracted by the plurality of cutouts 12a and press-fitted into the cover insertion groove 17 of the adapter nipple 13 to cover the cover 8 and the adapter nipple of the spring liner 6 ( 13) It is possible to maintain a more tightly sealed state since there is no gap between the insides. All.
[32] As described above, the adapter structure of the extension cable for the CO2 arc welder according to the present invention is coupled to both ends of the extension cable to form a stepped portion protruding inside the adapter plug into which the spring liner embedded in the extension cable is inserted, and the spring end of the spring liner. The inner part of the adapter nipple fastened to the end of the adapter plug is formed on the inner part of the adapter nipple to form a cover insertion part into which the cover of the spring liner is inserted, and the end of the adapter plug and the stepped part of the adapter plug when the adapter nipple is fastened to the adapter plug. In this way, the packing and the chuck are tightly sealed to prevent the CO 2 gas supplied through the gas hose of the extension cable from entering the spring liner and leaking or flowing back, thereby reducing the supply pressure due to leakage or back flow of the CO 2 gas. Copper to prevent welding defects such as bubbles generated To be that the effect of being able to drastically reduce the cost of loss due to leakage of the CO2 gas constant.

权利要求:
Claims (2)
[1" claim-type="Currently amended] Nipple fastening portions 4 are formed inside one end of the adapter plug 1 installed at both ends of the extension cable 40 for the CO2 arc welder, and the grip cover 49 is wrapped on both sides thereof, and the other end is outside the other end. Cable coupling portion (2) is formed and the outer one side is formed with a hose coupling portion (3) to which the gas connection pipe 48 is coupled,
Inside the adapter plug (1) is made of a spring (7) and a cover (8) surrounding the outside of the spring (7) and the spring liner (6) connected from the extension cable (40) is inserted and installed,
The nipple fastening portion 4 of the adapter plug 1 has a wire through hole 14 formed at the center of one end thereof, and a spring fastening portion 16 fastened to an end portion of the spring 7 of the spring liner 6 inside the other end thereof. In the adapter structure of the extension cable for the CO2 arc welder, in which the adapter nipple 13 is formed and the male nipple 15 is formed on one side of the outer circumferential surface thereof.
On one side of the inner circumferential surface of the adapter nipple 13 is formed a cover insertion portion 17 into which the cover 8 of the spring liner 6 is inserted,
A stepped portion 5 protrudes from the rear inner circumferential surface of the nipple fastening portion 4 formed at one end of the adapter plug 1 so that the adapter nipple 13 is connected to the nipple fastening portion 4 of the adapter plug 1. Adapter structure of the extension cable for the CO2 arc welder, characterized in that the coupling between the end of the adapter nipple (13) and the stepped portion (5) of the adapter plug (1) through the packing (9).
[2" claim-type="Currently amended] According to claim 1, Between the end of the adapter nipple 13 is fastened to one end of the adapter plug 1 and the incision (12a) formed in front of the ring-shaped body portion 11 is formed Adapter structure of the extension cable for the CO2 arc welder, characterized in that the tapered portion 12 is formed integrally with the chuck 10 is inserted.

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同族专利:

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公开号 | 公开日

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
2002-05-17|Application filed by 이재돈, 경성용접재 주식회사

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2002-05-17|Priority to KR1020020027525A

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2002-06-05|Publication of KR20020042604A

优先权:

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申请号 | 申请日 | 专利标题

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KR1020020027525A|KR20020042604A|2002-05-17|2002-05-17|Adapter structure of extention cable for CO2 arc welder|