WO2023128175A1 - Torch head for gas welding - Google Patents

Torch head for gas welding Download PDF

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Publication number
WO2023128175A1
WO2023128175A1 PCT/KR2022/015684 KR2022015684W WO2023128175A1 WO 2023128175 A1 WO2023128175 A1 WO 2023128175A1 KR 2022015684 W KR2022015684 W KR 2022015684W WO 2023128175 A1 WO2023128175 A1 WO 2023128175A1
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WO
WIPO (PCT)
Prior art keywords
welding
nozzle
gas
torch head
circumferential surface
Prior art date
Application number
PCT/KR2022/015684
Other languages
French (fr)
Korean (ko)
Inventor
정문교
정지혜
Original Assignee
주식회사 맵
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020220128933A external-priority patent/KR20230103922A/en
Application filed by 주식회사 맵 filed Critical 주식회사 맵
Publication of WO2023128175A1 publication Critical patent/WO2023128175A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/24—Features related to electrodes
    • B23K9/26—Accessories for electrodes, e.g. ignition tips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/24—Features related to electrodes
    • B23K9/28—Supporting devices for electrodes
    • B23K9/29—Supporting devices adapted for making use of shielding means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/32—Accessories

Definitions

  • the present invention relates to a torch head for gas welding coupled to a torch body and discharging a welding wire and a shielding gas supplied from the torch body to the outside.
  • an arc welding machine performs welding by supplying a consumable electrode wire acting on a material to a welding part at a constant speed so that an arc is generated between the wire and the base material through an electric current. At this time, it proceeds in a protective gas such as carbon dioxide, hydrogen, nitrogen, helium, and argon, and is widely used when welding carbon steel, alloy steel, and colored metal.
  • a protective gas such as carbon dioxide, hydrogen, nitrogen, helium, and argon
  • the arc welding machine as described above is largely composed of a welding body, a wire feeder, and a welding torch, and the welding torch is connected to the welding body through a welding cable and is further classified into a torch body and a torch head directly held by an operator.
  • the torch head is coupled to the torch body to perform welding work in close proximity to the material.
  • the conventional torch head 10 is a diffuser coupled and fixed to the torch body (not shown) ( 20), the welding tip 30 that supplies current so that an arc is generated while discharging the wire to the outside in a state coupled to the front end of the diffuser 20, and the nozzle 50 and the welding tip coupled to the diffuser 20 ( 30) is configured to include an insulator 40 spaced apart, and a nozzle 50 coupled to the insulator 40 and surrounding the welding tip 30.
  • the welding operation is performed while the nozzle 50 is obliquely disposed on the welding base material 10a, since welding must be performed while the operator sees the welding area. Due to this, when the protective gas is discharged from the nozzle 50, the nozzle 50 and the welding base material 10a are closer than the point 'A' where the nozzle 50 and the welding base material 10a are closer based on the point 'C' of the welding part. In addition to the discharge of the shielding gas to the distant 'B' point, the shielding gas discharged to the point 'A' based on the point 'C' of the welding part is discharged in the direction of 'C' of the welding part.
  • the present invention is capable of stably blocking external air without additional supply of protective gas during inclined welding of the welding base material to minimize welding costs due to prevention of welding defects and reduction of protective gas, as well as reducing air pollution
  • An object of the present invention is to provide a torch head for gas welding.
  • the present invention is a diffuser coupled to the torch body, a welding tip in which an arc is generated while discharging a wire to the outside in a state disposed at the tip of the diffuser, an insulator disposed outside the diffuser, and protection while connected to the insulator so as to surround the welding tip.
  • a gas welding torch head including a nozzle for guiding gas discharge, a gas spreading guide portion provided on an outer circumferential surface of the welding tip and having an area in which the outer diameter of the welding tip increases based on the discharge direction of the shielding gas; It is provided on the inner circumferential surface of the nozzle and is disposed in front of the gas spreading guide unit based on the discharge direction of the shielding gas, so that some of the shielding gas discharged through the nozzle is guided to a flow toward the welding area. It provides a torch head for gas welding including a protective gas concentration guide to do.
  • the protective gas concentration guide unit may be provided around a partial area of the inner circumferential circumference of the nozzle.
  • the protective gas concentration guide unit may be disposed at a front edge of the nozzle.
  • the protective gas concentration guide portion may have a shape protruding from the inner circumferential surface of the nozzle toward the welding tip.
  • the protective gas concentration guide portion may have an elliptical or semicircular protruding cross-section.
  • the protective gas concentration guide part may have a shape indented from the inner circumferential surface of the nozzle toward the inside of the nozzle.
  • connection guide portion provided on an outer circumferential surface of the welding tip to be disposed at the rear side of the gas spreading guide portion and having a region in which an outer diameter of the welding tip is reduced based on a discharge direction of the protective gas may be further provided.
  • a location display unit may be provided so that an operator can recognize the location of the gas concentration guide unit.
  • the nozzle is rotatably disposed on the insulator, and is provided on the nozzle, and when the nozzle is inclined in the direction of the welding base material, the rest of the nozzle except for a partial region provided with the shielding gas concentration guide is based on the welding region.
  • a center of gravity rotation control unit may be provided to rotate the nozzle so as to be disposed closer to the welding base material.
  • center of gravity rotation control unit may be provided on an outer circumferential surface of the rear end of the nozzle so as to be disposed on the opposite side of the protective gas concentration guide unit based on the circumferential direction of the nozzle.
  • center of gravity rotation control unit may be provided on an outer circumferential surface of the front end of the nozzle so as to be disposed on the opposite side of the protective gas concentration guide unit based on the circumferential direction of the nozzle.
  • the protective gas concentration guide unit may be provided around a 20 to 40% area around the inner circumferential surface of the nozzle.
  • a plurality of contact reduction grooves may be provided on an outer circumferential surface of the insulator to be spaced apart from each other in a direction from a front end to a rear end of the insulator.
  • the plurality of contact reduction grooves may be provided with areas gradually widening in a direction from the front end to the rear end of the insulator.
  • a gas spreading guide is formed on the outer circumferential surface of the welding tip, so that when the shielding gas is discharged from the nozzle, the discharge direction of the shielding gas is in the opposite direction to the welding part based on the point 'a' of the welding part.
  • a flow flow is generated in a spreading state, and a protective gas concentration guide part on one side of the inner circumference of the tip of the nozzle guides some of the protective gas discharged through the nozzle to be discharged as a flow discharged toward the welding part.
  • 1 is a configuration diagram of a conventional torch head for gas welding.
  • FIG. 2 is a configuration diagram of a torch head for gas welding according to an embodiment of the present invention.
  • FIG 3 is a configuration diagram of a torch head for gas welding according to another embodiment of the present invention.
  • Figure 4 is a perspective view of the nozzle shown in Figure 2;
  • 5 to 7 are configuration diagrams of a torch head for gas welding according to another embodiment of the present invention.
  • 8 and 9 are simulation images showing the flow state of the shielding gas when the shielding gas is discharged through a conventional gas welding torch head.
  • 10 and 11 are simulation images showing the flow state of the shielding gas when the shielding gas is discharged through the torch head for gas welding according to an embodiment of the present invention.
  • the gas welding torch head of one embodiment may be provided in a torch body (not shown) in a state including a diffuser 100, a welding tip 200, an insulator 300, and a nozzle 400. there is.
  • the diffuser 100 is a part that is fixedly coupled to the torch body.
  • the diffuser 100 is responsible for fixing the position of the torch head, diffuses and discharges the protective gas supplied from the outside to the inside, and provides a transfer space for the wire 10.
  • the diffuser 100 is provided in the form of a tube through which the inner side is penetrated in the longitudinal direction, and a threaded portion (not shown) coupled to the torch body and the welding tip 200 is provided on both sides in the longitudinal direction of the diffuser 100, and the diffuser ( Screw parts (not shown) coupled to the insulator 300 may be provided between the screw parts provided on both sides of the longitudinal direction of 100).
  • a gas discharge hole 101 may be provided at one side of the diffuser 100 to diffuse and discharge the protective gas supplied to the inside toward the outside of the diffuser 100 .
  • the welding tip 200 guides the wire 10 transported from the diffuser 100 to be discharged to the outside and receives current to generate an arc.
  • the welding tip 200 is coupled to the diffuser 100 through a screw portion disposed at the front end of the diffuser 100 .
  • the welding tip 200 is provided in the form of a tube through which the inside is penetrated in the longitudinal direction, and guides the wire 10 supplied from the diffuser 100 to be discharged to the outside.
  • the flow of the protective gas discharged through the gas discharge hole 101 of the diffuser 100 and then moved through the welding tip 200 and the nozzle 400 Gas spreading guide parts 210 and 210a that change may be provided. That is, the gas spreading guide parts 210 and 210a are configured to direct the flow of the shielding gas moving between the welding tip 200 and the nozzle 400 in a state in which the nozzle 400 is disposed toward the welding portion. ) Guides the flow flow from the outer circumferential direction to the inner circumferential direction of the nozzle 400, that is, in the direction opposite to the welding area based on the welding area.
  • the gas spreading guide parts 210 and 210a are formed on the outer circumferential surface of the welding tip 200 in the form of having a region in which the outer diameter of the welding tip 200 increases based on the discharge direction of the protective gas. may be provided. At this time, the gas spreading guide parts 210 and 210a may have a protruding structure protruding from the outer circumferential surface of the welding tip 200 .
  • the gas spreading guide parts 210 and 210a have an area in which the outer diameter of the welding tip 200 increases from the rear end to the front end of the welding tip 200 based on the discharge direction of the protective gas.
  • the flow of the protective gas moving through the welding tip 200 and the nozzle 400 is guided so as to be directed from the outer circumferential surface of the welding tip 200 to the inner circumferential direction of the nozzle 400. Due to this, when the shielding gas is discharged from the nozzle 400 via the gas spreading guide part 210, the discharge direction of the shielding gas is in the direction opposite to the point 'a' of the welding part based on the point 'a' of the welding part, that is, the welding part.
  • the velocity vector value of the discharged protective gas after colliding with the protective gas concentration guide parts 410 and 410a to be described later becomes larger, so that the welded area from the outside Even if an external force such as wind is generated at the point 'a', the inflow of external air to the point 'a' of the welding part is stably blocked.
  • the gas spreading guide parts 210 and 210a are provided to be disposed on the outer circumferential surface of the front end of the welding tip 200, and more specifically, the shielding gas concentration guide of the nozzle 400 to be described later based on the shielding gas discharge direction. It is preferable to be provided on the outer circumferential surface of the front end of the welding tip 200 so as to be disposed adjacent to the rear of the parts 410 and 410a.
  • the flow of the protective gas discharged through the nozzle 400 is the gas spreading guide part ( 210 and 210a)
  • a flow flow is induced in the direction opposite to the welding part 'a' point, that is, in the direction away from the welding part, based on the welding part 'a' point, and then collides with the protective gas concentration guide parts 410 and 410a.
  • some of the shielding gases are induced to flow through the shielding gas concentration guide parts 410 and 410a.
  • connection guide parts 211 and 211a may be provided on the outer circumferential surface of the welding tip 200 to have a region in which the outer diameter of the welding tip 200 is reduced based on the discharge direction of the protective gas.
  • the connection guide parts 211 and 211a are connected to the rear side of the gas spreading guide parts 210 and 210a, that is, the ends of the gas spreading guide parts 210 and 210a disposed at the rear with respect to the discharge direction of the protective gas. 200), the flow of the shielding gas moving through the welding tip 200 and the nozzle 400 is guided before moving to the gas spreading guide parts 210 and 210a.
  • connection guide parts 211 and 211a increase the flow rate of the protective gas moving through the welding tip 200 and the nozzle 400 before the flow is induced through the gas spreading guide parts 210 and 210a.
  • the velocity vector value in the discharge direction can be stably increased.
  • the insulator 300 is an insulator part coupled to the outside of the diffuser 100 .
  • the rear end of the insulator 300 may be screwed into the threaded portion of the diffuser 100 .
  • the insulator 300 prevents the diffuser 100 from being exposed to the outside while being coupled to the outside of the diffuser 100, and separates the welding tip 200 and the nozzle 400 so as to prevent the welding tip 200 from being exposed to the outside.
  • the current supplied through the nozzle 400 is prevented from being transferred.
  • a contact reduction groove 310 may be provided on an outer circumferential surface of the front end of the insulator 300, that is, an outer circumferential surface of an end connected to the rear end of the nozzle 400.
  • the contact reduction groove 310 reduces the contact area between the inner circumferential surface of the rear end of the nozzle 400 and the front end of the insulator 300, and reduces the heat transfer rate from the nozzle 400 to the insulator 300 during welding, thereby reducing the insulator by heat. It is possible to minimize the occurrence of damage to (300).
  • a plurality of contact reduction grooves 310 are spaced apart from each other in the longitudinal direction of the insulator 300, that is, in the direction from the front end to the rear end of the insulator 300, so as to minimize heat transfer from the nozzle 400.
  • the plurality of contact reduction grooves 310 reduce the contact area with the nozzle 400 toward the front end of the insulator 300 so that the heat transfer rate transferred from the nozzle 400 can be stably reduced. It may be provided in a form in which the area is sequentially widened toward the rear end.
  • the nozzle 400 is installed to surround the welding tip 200 while being coupled to the insulator 300, and guides the protective gas supplied from the outside and then discharged through the gas discharge hole 101 to the welding part.
  • the nozzle 400 is provided with a tubular structure through which the inner side is penetrated in the longitudinal direction so as to surround the welding tip 200.
  • the nozzle 400 is disposed to surround the welding tip 200, and a flow path through which the fluid moves is provided between the inner circumferential surface of the nozzle 400 and the outer circumferential surface of the welding tip 200. ) serves to guide the protective gas discharged through the gas discharge hole 101 to be discharged in a direction surrounding the welding portion 'a' point.
  • the rear end of the nozzle 400 is coupled to the front end of the insulator 300 .
  • the rear end of the nozzle 400 may be rotatably provided at the front end of the insulator 300 .
  • the position of the protective gas concentration guide parts 410 and 410a can be easily changed by the operator.
  • a plurality of incision grooves 401 are provided at the rear edge of the nozzle 400 to be spaced apart from each other around the nozzle 400, and the nozzle 400 It can be easily inserted and disposed outside the front end of the insulator 300 by allowing the rear end to be easily opened.
  • a pressure ring member 403 for pressurizing the rear end of the nozzle 400 may be inserted and disposed on the outer circumferential surface of the rear end of the nozzle 400 when the outside of the front end of the insulator 300 is connected to the rear end of the nozzle 400 in an inserted state.
  • a ring installation groove 402 may be provided.
  • shielding gas concentration guide parts 410 and 410a may be provided on an inner circumferential surface of the front edge of the nozzle 400, that is, an inner circumferential surface of the nozzle 400 adjacent to an outlet portion of the nozzle 400.
  • the shielding gas concentration guide parts 410 and 410a move between the nozzle 400 and the welding tip 200 and then some of the shielding gas discharged to the outside of the nozzle 400, that is, the welding part, passes through the welding part. It guides the flow flow discharged toward the point 'a' to occur.
  • the protective gas concentration guide parts 410 and 410a may be provided on the inner circumferential surface of the nozzle 400 so as to be disposed in front of the gas spreading guide parts 210 and 210a based on the discharge direction of the protective gas discharged through the nozzle 400.
  • the shielding gas concentration guide parts 410 and 410a provided in the nozzle 400 are inclined at an acute or obtuse angle in the direction of the welding base material 1 for welding, the welding base material is based on the point 'a' of the welding part. It is provided to extend around a partial area of the inner circumference of the nozzle 400 so that the flow of the protective gas can be guided only by a certain circumference from the point 'a 1 ', which is a part far from (1), to the point 'a' of the welding part. .
  • the protective gas concentration guide units 410 and 410a may be provided on the inner circumferential surface of the front end of the nozzle 400 so as to have a circumference of 20 to 40% of the circumference of the inner circumferential surface of the nozzle 400 .
  • the circumferential length of the inner circumferential area of the nozzle 400 equipped with the protective gas concentration guide parts 410 and 410a is less than 20% of the inner circumferential circumference of the nozzle 400.
  • the protective gas concentration guide part 410 may be provided in the form of a protrusion protruding from the inner circumferential surface of the front end of the nozzle 400 toward the inner circumferential surface of the welding tip 200 .
  • the protective gas concentration guide unit 410 may be provided with a protruding structure having a cross-section protruding in a semicircular shape. As such, when the protective gas concentration guide unit 410 is protruded in the form of a protrusion, the fluid discharge space between the inner circumferential surface of the tip edge of the nozzle 400 and the outer circumferential surface of the welding tip 200 is narrowed through the nozzle 400.
  • a portion of the discharged shielding gas guides the flow toward the point 'a' of the welding area to be induced.
  • the discharge flow rate is reduced while the shielding gas concentration guide part 410 collides with the flow of the shielding gas moving through the nozzle 400. and while increasing the velocity vector value of the shielding gas discharged through the area of the remaining nozzle 400 that is not provided with the shielding gas concentration guide part 410, even if an external force such as wind is generated, the welding part to the point 'a' The inflow of outside air is stably blocked.
  • the shielding gas concentration guide unit 410a may be provided in a groove shape recessed from the inner circumferential surface of the tip of the nozzle 400 toward the inside of the nozzle 400 .
  • the protective gas concentration guide part 410a is provided to be recessed into the nozzle 400 in the form of a groove, a portion of the protective gas moving along the inner circumferential surface of the nozzle 400 flows toward the welding portion 'a'. guide to occur.
  • the shielding gas concentration guide part 410a guides the discharge flow of the shielding gas through the inner circumferential surface of the nozzle 400 in a stable manner,
  • the shielding gas concentration guide parts 410 and 410a formed on the nozzle 400 are based on the point 'a' of the welding part.
  • the protective gas is discharged through the nozzle 400, the discharged at the 'a 1 ' point far from the welding base material 1
  • the inflow of outside air is stably blocked between the point 'a 1 ' and the base material 1, preventing welding defects from occurring.
  • the shielding gas concentration guide parts 410 and 410a are provided, as the flow of the shielding gas collides and the velocity vector value increases, the shielding gas moves to the point 'a 1 ' far from the welding base material 1.
  • the discharge flow rate decreases, and the inner circumferential area of the nozzle 400, except for some areas of the nozzle 400 provided with the shielding gas concentration guide parts 410 and 410a, is relatively reduced by the shielding gas concentration guide parts 410 and 410a.
  • the flow of the shielding gas is concentrated.
  • the velocity vector value increases and the welding part Based on the point 'a', the discharge flow is stably induced in the direction of the welding base material (1) of the shielding gas toward the opposite direction of the point 'a' of the welding part.
  • a location display unit 420 for easily recognizing the location of 410 and 410a may be provided. That is, when the nozzle 400 is inclined at an acute angle or an obtuse angle in the direction of the welding base material 1, the position display unit 420 is the rest area except for the partial area where the shielding gas concentration guide parts 410 and 410a of the nozzle 400 are provided. It is possible for the operator to easily recognize the position of the protective gas concentration guide parts 410 and 410a so as to be closer to the welding base material based on the welding region.
  • the position display unit 420 is provided in the form of a mark on the outer circumferential surface of the front end of the nozzle 400, so that the operator can recognize the position of the protective gas concentration guide unit 410, 410a, so that the operator can weld before welding Based on the point 'a', the position is adjusted by rotating the nozzle 400 so that the shielding gas concentration guide part 410, 410a is located at the point 'a 1 ', which is a far part from the welding base material 1, or Allows the grip position to be changed.
  • the portion opposite the nozzle 400 which is the remaining area except for the partial area portion of the nozzle 400 provided with the protective gas concentration guide parts 410 and 410a of the nozzle 400, increases the weight.
  • a center of gravity rotation control unit 430 may be installed. When the nozzle 400 is inclined at an obtuse angle or an acute angle in the direction of the welding base material 1, the center of gravity rotation control unit 430 is a portion of the nozzle 400 provided with the protective gas concentration guide parts 410 and 410a.
  • the nozzle 400 is operated so that the center of gravity of the nozzle 400 is maintained in a state in which the location of the remaining area excluding the area is disposed at the point 'a 2 ', which is a part close to the welding base material 1 based on the point 'a' of the welding part. make it rotate
  • the center of gravity rotation control unit 430 is shown as being provided on the outer circumferential surface of the rear end of the nozzle 400 so as to be disposed on the opposite side of the protective gas concentration guide unit 410 and 410a based on the circumferential direction of the nozzle 400, but is limited thereto. It may be provided on the outer circumferential surface of the front end of the nozzle 400 so as to be disposed on the opposite side of the protective gas concentration guide parts 410 and 410a based on the circumferential direction of the nozzle 400.
  • carbon dioxide is supplied as a protective gas to a conventional gas welding torch head at a rate of 25 L/min based on an environment in which a flow of external air is applied at a speed of 1 m/s to the welding area. It is a simulation result showing the velocity vector value according to the flow of the shielding gas moving in the discharge direction in
  • the conventional gas welding torch head structure is not provided with the gas spreading guide parts 210 and 210a and the protective gas concentration guide parts 410 and 410a, and in the case of FIG.
  • the welding tip 200 and the nozzle ( 400) and the velocity vector value of the shielding gas discharged from the nozzle 400 to the welding part is the speed of the shielding gas discharged to the welding part through the conventional gas welding torch head shown in FIGS. 8 and 9 It can be seen that each becomes larger than the vector value.
  • the velocity vector value according to the movement of some of the shielding gas in the direction of 'a' of the welding part is greatly induced, and the welding base material ( It can be inferred that the inflow of outside air into 1) can be stably blocked.
  • Figures 10 and 11 are based on the environment in which the flow of external air is applied at a speed of 1m / s to the welding area
  • Figure 10 is a gas welding torch head of one embodiment
  • Supplying carbon dioxide as a protective gas at 25L / min 11 is a velocity vector value according to the flow flow of the shielding gas moving in the discharge direction in the state of being moved in the discharge direction in a state in which carbon dioxide is supplied at 15 L/min as the shielding gas to the torch head for gas welding in one embodiment. It is the velocity vector value according to the flow of the shielding gas.
  • the gas spreading guide parts 210 and 210a And the velocity vector value according to the movement of the shielding gas flowing between the welding tip 200 and the nozzle 400 and the shielding gas discharged from the nozzle 400 to the welding part by the shielding gas concentration guide part 410, 410a is also stable. It can be seen that it is induced in an enlarged state.
  • the gas spreading guide parts 210 and 210a are provided on the outer circumferential surface of the welding tip 200, so that when the nozzle 400 discharges the protective gas, the protective gas discharge direction Based on the point 'a' of the welding area, a fluid flow is induced in a spreading state toward the opposite direction of the welding area, and on one side of the inner circumferential surface of the front end of the nozzle 400, the protective gas concentration guide parts 410 and 410a pass through the nozzle 400.
  • Some of the shielding gas discharged guides the flow of the discharged gas toward the welding part, so that the nozzle 400 is inclined in the direction of the welding base material 1, and the shielding gas concentration guide unit 410,410
  • a portion of the shielding gas flows in the direction of the welding part 'a' at the point 'a 1 ', which is a far part from the welding base material 1. It induces the flow with the increased velocity vector value, and at the point 'a 2 ', which is close to the welding base material, the discharge flow rate of the shielding gas increases as much as the discharge flow rate of the shielding gas decreased at the 'a 1 ' point, and the velocity vector value increases. Since the discharge is performed in this state, it is possible to stably block the inflow of external air to the welding part 'a' without increasing the discharge amount of the shielding gas, thereby preventing welding defects.

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  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)

Abstract

The present invention provides a torch head for gas welding, the torch head comprising: a diffuser coupled to a torch body; a welding tip which is arranged at the front end of the diffuser and generates an arc while discharging a wire to the outside; an insulator arranged outside the diffuser; and a nozzle which is connected to the insulator so as to surround the welding tip, and guides the discharge of a shield gas, wherein the torch head for gas welding further comprises: a gas spread guide portion which is provided on the outer circumference of the welding tip and has an area in which the outer diameter of the welding tip increases in a direction in which the shield gas is discharged; and a shield gas intensive guide portion which is provided on the inner circumference of the nozzle, and is arranged in front of the gas spread guide portion in the direction in which the shield gas is discharged, so as to guide some of the shield gas discharged through the nozzle to flow toward a direction of the welded part.

Description

가스 용접용 토치 헤드Torch head for gas welding
본 발명은, 토치 본체에 결합되어 토치 본체에서 공급되는 용접 와이어와 보호가스를 외부로 배출시키는 가스 용접용 토치 헤드에 관한 것이다.The present invention relates to a torch head for gas welding coupled to a torch body and discharging a welding wire and a shielding gas supplied from the torch body to the outside.
일반적으로 아크 용접기는 용재에 작용하는 소모 전극 와이어를 일정한 속도로 용접부위에 송급되면서 전류를 통하여 와이어와 모재 사이에서 아크가 발생되도록 하여 용접을 수행한다. 이때, 이산화탄소, 수소, 질소, 헬륨 및 아르곤 등의 보호가스 속에서 진행하게 되며, 통상 탄소강, 합금강, 유색 금속을 용접할 때 널리 사용된다.In general, an arc welding machine performs welding by supplying a consumable electrode wire acting on a material to a welding part at a constant speed so that an arc is generated between the wire and the base material through an electric current. At this time, it proceeds in a protective gas such as carbon dioxide, hydrogen, nitrogen, helium, and argon, and is widely used when welding carbon steel, alloy steel, and colored metal.
상기와 같은 아크 용접기는 크게 용접 본체, 와이어 송급장치, 용접 토치로 구성되며, 용접 토치는 용접본체와 용접케이블을 통해 연결되며 작업자가 직접 파지하는 토치 본체와 토치 헤드로 다시 분류된다.The arc welding machine as described above is largely composed of a welding body, a wire feeder, and a welding torch, and the welding torch is connected to the welding body through a welding cable and is further classified into a torch body and a torch head directly held by an operator.
이때, 상기 토치 헤드는 토치 본체와 결합되어 용재에 근접하여 용접을 작업을 하는 것으로, 도 1을 참조하면, 종래의 토치 헤드(10)는, 토치 본체(도면미도시)에 결합 고정되는 디퓨져(20), 디퓨져(20)의 선단에 결합된 상태로 와이어를 외부로 배출시키면서 아크가 발생되도록 전류를 공급하게 되는 용접팁(30), 디퓨져(20)에 결합되어 노즐(50)과 용접팁(30)을 이격시키는 인슐레이터(40), 인슐레이터(40)에 결합되어 용접팁(30)을 감싸는 노즐(50)을 포함하여 구성된다.At this time, the torch head is coupled to the torch body to perform welding work in close proximity to the material. Referring to FIG. 1, the conventional torch head 10 is a diffuser coupled and fixed to the torch body (not shown) ( 20), the welding tip 30 that supplies current so that an arc is generated while discharging the wire to the outside in a state coupled to the front end of the diffuser 20, and the nozzle 50 and the welding tip coupled to the diffuser 20 ( 30) is configured to include an insulator 40 spaced apart, and a nozzle 50 coupled to the insulator 40 and surrounding the welding tip 30.
그런데, 종래의 토치 헤드는, 작업자가 용접부위를 보면서 용접이 이루어져야 하는 바, 노즐(50)이 용접모재(10a)에 경사지게 배치된 상태로 용접작업을 수행하게 된다. 이로 인해, 노즐(50)에서 보호가스가 배출시, 용접부위 'C' 지점을 기준으로 노즐(50)과 용접모재(10a)가 가까운 'A' 지점보다 노즐(50)과 용접모재(10a)가 먼 'B'지점으로의 보호가스 배출량 쏠림과 더불어 보호가스가 용접부위 'C' 지점을 기준으로 'A' 지점으로 배출되는 보호가스는 용접부위 'C' 방향으로의 배출흐름이 이루어지게 되는 바, 'A' 지점에서 'C' 지점으로 불어오는 외부 공기를 안정적으로 차단하지 못하면서 용접부위 'C' 지점에 대한 용접 불량이 발생되는 문제점이 있다. 또한, 노즐(50)이 용접모재(10a)에 경사지게 배치된 상태에서 용접이 이루어질 경우, 용접부위 'C' 지점을 기준으로 노즐(50)과 용접모재(10a)가 먼 'B' 지점으로 배출되는 보호가스는 용접부위 'C' 지점을 향하지 않고 용접모재(10a)로부터 이격상태로의 배출흐름이 이루어지고, 이로 인해 외부 공기를 안정적으로 차단하지 못하면서 용접부위 'C' 지점에 대한 용접 불량이 발생되는 문제점이 있다However, in the conventional torch head, the welding operation is performed while the nozzle 50 is obliquely disposed on the welding base material 10a, since welding must be performed while the operator sees the welding area. Due to this, when the protective gas is discharged from the nozzle 50, the nozzle 50 and the welding base material 10a are closer than the point 'A' where the nozzle 50 and the welding base material 10a are closer based on the point 'C' of the welding part. In addition to the discharge of the shielding gas to the distant 'B' point, the shielding gas discharged to the point 'A' based on the point 'C' of the welding part is discharged in the direction of 'C' of the welding part. Bar, there is a problem in that welding defects for the welding part 'C' point occur while the external air blowing from the 'A' point to the 'C' point cannot be stably blocked. In addition, when welding is performed in a state in which the nozzle 50 is inclined to the welding base material 10a, the nozzle 50 and the welding base material 10a are discharged to a distant 'B' point based on the welding portion 'C' point. The shielding gas is not directed to the point 'C' of the welding part, but flows away from the welding base material 10a, and as a result, welding defects for the point 'C' of the welding part cannot be stably blocked from outside air. There are problems that arise
그러므로, 종래에는 용접 품질을 유지하기 위해 다량의 보호가스가 공급하고 있는데, 이러한 경우, 용접비용의 증가와 더불어 보호가스로 저렴한 이산화탄소를 주로 사용시 탄소저감 추세에 역행한다는 점에서 사용 상의 제약이 따르게 된다.Therefore, in the prior art, a large amount of shielding gas has been supplied to maintain welding quality. In this case, along with the increase in welding cost, use of inexpensive carbon dioxide as a shielding gas runs counter to the carbon reduction trend. .
이러한, 토치 헤드에 대한 관련 기술은, 대한민국 공개특허공보 제2011-0038356호(2011.04.14)에 제시된다.A related technology for such a torch head is presented in Korean Patent Publication No. 2011-0038356 (2011.04.14).
본 발명은, 용접모재에 대한 경사 용접시 보호가스의 추가적인 공급없이 안정적으로 외부공기를 차단시켜 용접 불량 방지 및 보호가스 저감으로 인한 용접 비용을 최소화할 수 있게 함과 더불어 대기오염을 감소시킬 수 있는 가스 용접용 토치 헤드를 제공하는데 목적이 있다.The present invention is capable of stably blocking external air without additional supply of protective gas during inclined welding of the welding base material to minimize welding costs due to prevention of welding defects and reduction of protective gas, as well as reducing air pollution An object of the present invention is to provide a torch head for gas welding.
본 발명은, 토치 본체에 결합되는 디퓨져, 디퓨져의 선단에 배치된 상태로 와이어를 외부로 배출시키면서 아크가 발생되는 용접팁, 디퓨져 외측에 배치된 인슐레이터, 용접팁을 감싸도록 인슐레이터에 연결된 상태로 보호가스의 배출을 가이드하는 노즐을 포함하는 가스 용접용 토치 헤드에 있어서, 상기 용접팁의 외주면에 구비되며, 보호가스의 배출방향을 기준으로 용접팁의 외경이 증대되는 영역을 가지는 가스퍼짐 가이드부, 상기 노즐의 내주면에 구비되며, 보호가스의 배출방향을 기준으로 가스퍼짐 가이드부보다 전방에 배치되어, 노즐을 통해 배출되는 보호가스 중 일부의 보호가스가 용접부위 방향을 향하는 유동 흐름으로 유도되게 가이드하는 보호가스 집중가이드부를 포함하는 가스 용접용 토치 헤드를 제공한다.The present invention is a diffuser coupled to the torch body, a welding tip in which an arc is generated while discharging a wire to the outside in a state disposed at the tip of the diffuser, an insulator disposed outside the diffuser, and protection while connected to the insulator so as to surround the welding tip. In a gas welding torch head including a nozzle for guiding gas discharge, a gas spreading guide portion provided on an outer circumferential surface of the welding tip and having an area in which the outer diameter of the welding tip increases based on the discharge direction of the shielding gas; It is provided on the inner circumferential surface of the nozzle and is disposed in front of the gas spreading guide unit based on the discharge direction of the shielding gas, so that some of the shielding gas discharged through the nozzle is guided to a flow toward the welding area. It provides a torch head for gas welding including a protective gas concentration guide to do.
또한, 상기 보호가스 집중가이드부는, 노즐의 내주면 둘레 중 일부 영역 둘레로 구비될 수 있다.In addition, the protective gas concentration guide unit may be provided around a partial area of the inner circumferential circumference of the nozzle.
또한, 상기 보호가스 집중가이드부는, 노즐의 선단 가장자리에 배치될 수 있다.In addition, the protective gas concentration guide unit may be disposed at a front edge of the nozzle.
또한, 상기 보호가스 집중가이드부는 노즐의 내주면으로부터 용접팁 방향으로 돌출된 형태를 가질 수 있다.In addition, the protective gas concentration guide portion may have a shape protruding from the inner circumferential surface of the nozzle toward the welding tip.
또한, 상기 보호가스 집중가이드부는 타원형 또는 반원형으로 돌출된 단면형태를 가질 수 있다.In addition, the protective gas concentration guide portion may have an elliptical or semicircular protruding cross-section.
또한, 상기 보호가스 집중가이드부는 노즐의 내주면으로부터 노즐 내측방향으로 함입된 형태를 가질 수 있다.In addition, the protective gas concentration guide part may have a shape indented from the inner circumferential surface of the nozzle toward the inside of the nozzle.
또한, 상기 가스퍼짐 가이드부의 후측에 배치되도록 용접팁의 외주면에 구비되며, 보호가스의 배출방향을 기준으로 용접팁의 외경이 축소되는 영역을 가지게 하는 연결 가이드부가 더 구비될 수 있다.In addition, a connection guide portion provided on an outer circumferential surface of the welding tip to be disposed at the rear side of the gas spreading guide portion and having a region in which an outer diameter of the welding tip is reduced based on a discharge direction of the protective gas may be further provided.
또한, 상기 노즐을 용접모재 방향으로 예각 또는 둔각으로 경사지게 배치시, 노즐의 보호가스 집중가이드부가 구비된 일부 영역을 제외한 나머지 영역이 용접부위를 기준으로 용접모재에 더 가깝게 배치되며, 상기 노즐에는 보호가스 집중가이드부의 위치를 작업자가 인지할 수 있게 하는 위치 표시부가 구비될 수 있다.In addition, when the nozzle is disposed inclined at an acute angle or an obtuse angle in the direction of the welding base material, the rest of the nozzle except for a portion of the shielding gas concentration guide part is disposed closer to the welding base material based on the welding part, and the nozzle has protection A location display unit may be provided so that an operator can recognize the location of the gas concentration guide unit.
또한, 상기 노즐은 인슐레이터에 회전 가능하게 배치되며, 상기 노즐에 구비되어, 노즐을 용접모재 방향으로 경사지게 배치시, 노즐의 보호가스 집중가이드부가 구비된 일부 영역을 제외한 나머지 영역이 용접부위를 기준으로 용접모재에 더 가깝게 배치되도록 노즐을 회전시키는 무게중심 회전조절부가 구비될 수 있다.In addition, the nozzle is rotatably disposed on the insulator, and is provided on the nozzle, and when the nozzle is inclined in the direction of the welding base material, the rest of the nozzle except for a partial region provided with the shielding gas concentration guide is based on the welding region. A center of gravity rotation control unit may be provided to rotate the nozzle so as to be disposed closer to the welding base material.
또한, 상기 무게중심 회전조절부는, 노즐의 원주방향을 기준으로 보호가스 집중가이드부 반대측에 배치되도록 노즐의 후단 외주면에 구비될 수 있다.In addition, the center of gravity rotation control unit may be provided on an outer circumferential surface of the rear end of the nozzle so as to be disposed on the opposite side of the protective gas concentration guide unit based on the circumferential direction of the nozzle.
또한, 상기 무게중심 회전조절부는, 노즐의 원주방향을 기준으로 보호가스 집중가이드부 반대측에 배치되도록 노즐의 선단 외주면에 구비될 수 있다.In addition, the center of gravity rotation control unit may be provided on an outer circumferential surface of the front end of the nozzle so as to be disposed on the opposite side of the protective gas concentration guide unit based on the circumferential direction of the nozzle.
또한, 상기 보호가스 집중가이드부는 노즐 내주면 둘레의 20 ~ 40% 영역 둘레로 구비될 수 있다.In addition, the protective gas concentration guide unit may be provided around a 20 to 40% area around the inner circumferential surface of the nozzle.
또한, 상기 인슐레이터의 외주면에는 인슐레이터의 선단에서 후단 방향으로 상호 이격되게 복수의 접촉감소홈이 구비될 수 있다.In addition, a plurality of contact reduction grooves may be provided on an outer circumferential surface of the insulator to be spaced apart from each other in a direction from a front end to a rear end of the insulator.
또한, 상기 복수의 접촉감소홈은 인슐레이터의 선단에서 후단 방향으로 갈수록 순차적으로 면적이 넓어지게 구비될 수 있다.In addition, the plurality of contact reduction grooves may be provided with areas gradually widening in a direction from the front end to the rear end of the insulator.
본 발명에 따른 가스 용접용 토치 헤드는, 용접팁의 외주면에는 가스퍼짐 가이드부가 형성되어 노즐에서 보호가스의 배출시, 보호가스의 배출 방향이 용접부위 'a' 지점을 기준으로 용접부위 반대 방향을 향하는 퍼짐 상태로 유동 흐름이 발생되게 하고, 노즐의 선단 내주면 일측에는 보호가스 집중가이드부가 노즐을 통해 배출되는 보호가스 중 일부의 보호가스가 용접부위 방향을 향해 배출되는 유동 흐름으로 배출되게 가이드 하는 바, 노즐이 용접모재 방향으로 경사지게 배치된 상태로 용접시, 보호가스 집중가이드부가 용접모재로부터 먼 지점에 배치되게 하면 용접모재로부터 먼 부위인 'a1' 지점에서 용접부위 'a' 방향으로 일부의 보호가스가 증대된 속도벡터값으로 유동되게 유도하고 용접모재로부터 가까운 부위인 'a2' 지점에서는 'a1' 지점에서 감소되는 보호가스의 배출유량만큼 보호가스의 배출유량이 증가되면서 속도벡터값이 증대된 상태로 배출이 이루어지는 바, 보호가스의 배출량 증대없이도 용접부위 'a' 지점에 대한 외부공기의 유입을 안정적으로 차단할 수 있게 되면서 용접 불량을 방지할 수 있게 된다.In the gas welding torch head according to the present invention, a gas spreading guide is formed on the outer circumferential surface of the welding tip, so that when the shielding gas is discharged from the nozzle, the discharge direction of the shielding gas is in the opposite direction to the welding part based on the point 'a' of the welding part. A flow flow is generated in a spreading state, and a protective gas concentration guide part on one side of the inner circumference of the tip of the nozzle guides some of the protective gas discharged through the nozzle to be discharged as a flow discharged toward the welding part. , When welding in a state where the nozzle is inclined in the direction of the welding base material, if the shielding gas concentration guide is placed at a point far from the welding base material, a part of the welding part in the direction of ' a ' The shielding gas is induced to flow with the increased velocity vector value, and at the point 'a 2 ', which is close to the welding base material, the discharge flow rate of the shielding gas is increased by the amount of discharge flow of the shielding gas decreased at the point 'a 1 ', and the velocity vector value Since the discharge is performed in this increased state, it is possible to stably block the inflow of external air to the welding portion 'a' without increasing the discharge amount of the shielding gas, thereby preventing welding defects.
도 1은 종래의 가스 용접용 토치 헤드의 구성도이다.1 is a configuration diagram of a conventional torch head for gas welding.
도 2는 본 발명의 일 실시예에 따른 가스 용접용 토치 헤드의 구성도이다.2 is a configuration diagram of a torch head for gas welding according to an embodiment of the present invention.
도 3은 본 발명의 다른 실시예에 따른 가스 용접용 토치 헤드의 구성도이다.3 is a configuration diagram of a torch head for gas welding according to another embodiment of the present invention.
도 4는 도 2에 도시된 노즐의 사시도이다.Figure 4 is a perspective view of the nozzle shown in Figure 2;
도 5 내지 도 7은 본 발명의 또 다른 실시예에 따른 가스 용접용 토치 헤드의 구성도이다.5 to 7 are configuration diagrams of a torch head for gas welding according to another embodiment of the present invention.
도 8 및 도 9는 종래의 가스용접용 토치 헤드를 통한 보호가스 배출시 보호가스의 유동상태를 나타낸 시뮬레이션 이미지이다.8 and 9 are simulation images showing the flow state of the shielding gas when the shielding gas is discharged through a conventional gas welding torch head.
도 10 및 도 11은 본 발명의 일 실시예에 따른 가스 용접용 토치 헤드를 통한 보호가스 배출시 보호가스의 유동상태를 나타낸 시뮬레이션 이미지이다.10 and 11 are simulation images showing the flow state of the shielding gas when the shielding gas is discharged through the torch head for gas welding according to an embodiment of the present invention.
이하 첨부된 도면을 참조로 본 발명의 바람직한 실시예들을 상세히 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 2는 본 발명의 일 실시예에 따른 가스 용접용 토치 헤드의 구성도이다. 도 2를 참조하면, 일 실시예의 가스 용접용 토치 헤드는, 디퓨져(100), 용접팁(200), 인슐레이터(300), 노즐(400)을 포함한 상태로 토치 본체(미도시)에 구비될 수 있다.2 is a configuration diagram of a torch head for gas welding according to an embodiment of the present invention. Referring to FIG. 2, the gas welding torch head of one embodiment may be provided in a torch body (not shown) in a state including a diffuser 100, a welding tip 200, an insulator 300, and a nozzle 400. there is.
상기 디퓨져(100)는 토치 본체에 고정상태로 결합되는 부분이다. 이러한, 디퓨져(100)는 토치 헤드의 위치고정을 담당하면서 외부에서 내측으로 공급되는 보호가스를 확산 배출되게 함과 더불어 와이어(10)의 이송공간을 제공한다. 디퓨져(100)는 내측을 길이방향으로 관통되게 한 관 형태로 구비되며, 디퓨져(100)의 길이방향 양측에는 토치 본체 및 용접팁(200)과 결합되는 나사부(미도시)가 구비되며, 디퓨져(100)의 길이방향 양측에 구비된 나사부 사이에는 인슐레이터(300)와 결합되는 나사부(미도시)가 구비될 수 있다.The diffuser 100 is a part that is fixedly coupled to the torch body. The diffuser 100 is responsible for fixing the position of the torch head, diffuses and discharges the protective gas supplied from the outside to the inside, and provides a transfer space for the wire 10. The diffuser 100 is provided in the form of a tube through which the inner side is penetrated in the longitudinal direction, and a threaded portion (not shown) coupled to the torch body and the welding tip 200 is provided on both sides in the longitudinal direction of the diffuser 100, and the diffuser ( Screw parts (not shown) coupled to the insulator 300 may be provided between the screw parts provided on both sides of the longitudinal direction of 100).
그리고, 상기 디퓨져(100)의 일측에는 내측으로 공급되는 보호가스를 디퓨져(100)의 외측 방향으로 확산 배출되게 하는 가스배출공(101)이 구비될 수 있다.In addition, a gas discharge hole 101 may be provided at one side of the diffuser 100 to diffuse and discharge the protective gas supplied to the inside toward the outside of the diffuser 100 .
상기 용접팁(200)은 디퓨져(100)로부터 이송되는 와이어(10)를 외부로 배출되게 가이드함과 더불어 아크가 발생되도록 전류를 공급받게 된다. 이러한, 용접팁(200)은 디퓨져(100)의 선단에 배치된 나사부를 통해 디퓨져(100)에 결합된다. 여기서, 용접팁(200)은 내측을 길이방향으로 관통되게 한 관 형태로 구비된 바, 디퓨져(100)로부터 공급되는 와이어(10)를 외부로 배출되게 가이드한다.The welding tip 200 guides the wire 10 transported from the diffuser 100 to be discharged to the outside and receives current to generate an arc. The welding tip 200 is coupled to the diffuser 100 through a screw portion disposed at the front end of the diffuser 100 . Here, the welding tip 200 is provided in the form of a tube through which the inside is penetrated in the longitudinal direction, and guides the wire 10 supplied from the diffuser 100 to be discharged to the outside.
그리고, 상기 용접팁(200)의 외주면 일측에는 디퓨져(100)의 가스배출공(101)을 통해 배출된 후, 용접팁(200)과 노즐(400) 사이를 통해 이동되는 보호가스의 유동 흐름을 변경시키는 가스퍼짐 가이드부(210,210a)가 구비될 수 있다. 즉, 가스퍼짐 가이드부(210,210a)는 노즐(400)을 용접부위를 향하도록 배치시킨 상태에서 용접팁(200)과 노즐(400) 사이를 통해 이동되는 보호가스의 유동 흐름이 용접팁(200) 외주면에서 노즐(400) 내주면 방향, 즉 용접부위를 기준으로 용접부위 반대 방향을 향하는 유동 흐름이 발생되도록 가이드한다.In addition, on one side of the outer circumferential surface of the welding tip 200, the flow of the protective gas discharged through the gas discharge hole 101 of the diffuser 100 and then moved through the welding tip 200 and the nozzle 400 Gas spreading guide parts 210 and 210a that change may be provided. That is, the gas spreading guide parts 210 and 210a are configured to direct the flow of the shielding gas moving between the welding tip 200 and the nozzle 400 in a state in which the nozzle 400 is disposed toward the welding portion. ) Guides the flow flow from the outer circumferential direction to the inner circumferential direction of the nozzle 400, that is, in the direction opposite to the welding area based on the welding area.
도 2 및 도 3을 참조하면, 상기 가스퍼짐 가이드부(210,210a)는 보호가스의 배출방향을 기준으로 용접팁(200)의 외경이 증대되는 영역을 가지게 하는 형태로 용접팁(200) 외주면에 구비될 수 있다. 이때, 상기 가스퍼짐 가이드부(210,210a)는, 용접팁(200)의 외주면으로부터 돌출된 돌기 구조로 구비될 수 있다.2 and 3, the gas spreading guide parts 210 and 210a are formed on the outer circumferential surface of the welding tip 200 in the form of having a region in which the outer diameter of the welding tip 200 increases based on the discharge direction of the protective gas. may be provided. At this time, the gas spreading guide parts 210 and 210a may have a protruding structure protruding from the outer circumferential surface of the welding tip 200 .
이같은, 상기 가스퍼짐 가이드부(210,210a)는 보호가스의 배출방향을 기준으로 용접팁(200)의 외경을 용접팁(200)의 후단에서 선단 방향으로 갈수록 외경이 증대되는 영역을 가지게 하는 형태로 구비되는 바, 용접팁(200)과 노즐(400) 사이를 통해 이동되는 보호가스의 유동 흐름이 용접팁(200) 외주면에서 노즐(400) 내주면 방향을 향하도록 유도되게 가이드한다. 이로 인해, 가스퍼짐 가이드부(210)를 거쳐 노즐(400)에서 보호가스의 배출시, 보호가스의 배출방향이 용접부위 'a' 지점을 기준으로 용접부위 'a' 지점 반대 방향, 즉 용접부위로부터 멀어지는 방향을 향하는 유동흐름의 속도벡터값을 커지게 유도함으로써, 이후 설명될 보호가스 집중가이드부(410,410a)에 충돌된 후 배출되는 보호가스의 속도벡터값이 더욱 커지게 하여 외부에서 용접부위 'a' 지점으로의 바람과 같은 외력이 발생되더라도 용접부위 'a'지점으로의 외부공기 유입이 안정적으로 차단된다.As such, the gas spreading guide parts 210 and 210a have an area in which the outer diameter of the welding tip 200 increases from the rear end to the front end of the welding tip 200 based on the discharge direction of the protective gas. As provided, the flow of the protective gas moving through the welding tip 200 and the nozzle 400 is guided so as to be directed from the outer circumferential surface of the welding tip 200 to the inner circumferential direction of the nozzle 400. Due to this, when the shielding gas is discharged from the nozzle 400 via the gas spreading guide part 210, the discharge direction of the shielding gas is in the direction opposite to the point 'a' of the welding part based on the point 'a' of the welding part, that is, the welding part. By inducing the increase in the velocity vector value of the flow flow in the direction away from, the velocity vector value of the discharged protective gas after colliding with the protective gas concentration guide parts 410 and 410a to be described later becomes larger, so that the welded area from the outside Even if an external force such as wind is generated at the point 'a', the inflow of external air to the point 'a' of the welding part is stably blocked.
여기서, 상기 가스퍼짐 가이드부(210,210a)는 용접팁(200)의 선단 외주면에 배치되도록 구비되는데, 보다 상세하게는 보호가스의 배출방향을 기준으로 이후 설명될 노즐(400)의 보호가스 집중가이드부(410,410a) 후방에 인접 배치되도록 용접팁(200)의 선단 외주면에 구비되는 것이 바람직하다. 이같이, 가스퍼짐 가이드부(210,210a)가 보호가스 집중가이드부(410,410a) 후방에 인접 배치되는 바, 노즐(400)를 통해 배출되는 보호가스의 유동흐름이 앞서 설명한 바와 같이 가스퍼짐 가이드부(210,210a)를 통해 용접부위 'a' 지점을 기준으로 용접부위 'a' 지점 반대 방향, 즉 용접부위로부터 멀어지는 방향을 향하는 유동흐름이 유도된 후, 보호가스 집중가이드부(410,410a)와 충돌이 안정적으로 이루어지면서 보호가스 중 일부의 보호가스가 보호가스 집중가이드부(410,410a)를 통한 유동흐름의 유도가 이루어지게 된다.Here, the gas spreading guide parts 210 and 210a are provided to be disposed on the outer circumferential surface of the front end of the welding tip 200, and more specifically, the shielding gas concentration guide of the nozzle 400 to be described later based on the shielding gas discharge direction. It is preferable to be provided on the outer circumferential surface of the front end of the welding tip 200 so as to be disposed adjacent to the rear of the parts 410 and 410a. As such, since the gas spreading guide parts 210 and 210a are disposed adjacent to the rear of the protective gas concentration guide parts 410 and 410a, the flow of the protective gas discharged through the nozzle 400 is the gas spreading guide part ( 210 and 210a), a flow flow is induced in the direction opposite to the welding part 'a' point, that is, in the direction away from the welding part, based on the welding part 'a' point, and then collides with the protective gas concentration guide parts 410 and 410a. As this is done stably, some of the shielding gases are induced to flow through the shielding gas concentration guide parts 410 and 410a.
또한, 상기 용접팁(200)의 외주면에는 보호가스의 배출방향을 기준으로 용접팁(200)의 외경이 축소되는 영역을 가지게 하는 연결 가이드부(211,211a)가 구비될 수 있다. 이러한, 연결 가이드부(211,211a)는 가스퍼짐 가이드부(210,210a)의 후측, 즉 보호가스의 배출방향을 기준으로 후방에 배치된 가스퍼짐 가이드부(210,210a)의 끝단과 연결되도록 용접팁(200)의 외주면에 구비됨으로써, 용접팁(200)과 노즐(400) 사이를 통해 이동되는 보호가스의 유동 흐름이 가스퍼짐 가이드부(210,210a)로 이동하기 전 유동흐름의 유도가 이루어지게 된다. 이같이, 연결 가이드부(211,211a)는 용접팁(200)과 노즐(400) 사이를 통해 이동되는 보호가스의 유량이 가스퍼짐 가이드부(210,210a)를 통해 유동흐름이 유도되기 전에 증가되게 하는 바, 가스퍼짐 가이드부(210,210a)를 통한 보호가스의 배출방향으로 유동흐름이 유도시 배출방향으로의 속도벡터값이 안정적으로 커질 수 있게 한다.In addition, connection guide parts 211 and 211a may be provided on the outer circumferential surface of the welding tip 200 to have a region in which the outer diameter of the welding tip 200 is reduced based on the discharge direction of the protective gas. The connection guide parts 211 and 211a are connected to the rear side of the gas spreading guide parts 210 and 210a, that is, the ends of the gas spreading guide parts 210 and 210a disposed at the rear with respect to the discharge direction of the protective gas. 200), the flow of the shielding gas moving through the welding tip 200 and the nozzle 400 is guided before moving to the gas spreading guide parts 210 and 210a. As such, the connection guide parts 211 and 211a increase the flow rate of the protective gas moving through the welding tip 200 and the nozzle 400 before the flow is induced through the gas spreading guide parts 210 and 210a. , When the flow is induced in the discharge direction of the protective gas through the gas spreading guide parts 210 and 210a, the velocity vector value in the discharge direction can be stably increased.
상기 인슐레이터(300)는 디퓨져(100)의 외측에 결합되는 절연체 부분이다. 이러한, 인슐레이터(300)의 후단은 디퓨져(100)의 나사부에 나사 결합될 수 있다. 이같이, 인슐레이터(300)는 디퓨져(100)의 외측에 결합 설치되면서 디퓨져(100)가 외부로 노출되는 것을 방지함과 더불어 용접팁(200)과 노즐(400)을 이격시켜 용접팁(200)을 통해 공급되는 전류가 노즐(400)로 전달되는 것을 방지한다.The insulator 300 is an insulator part coupled to the outside of the diffuser 100 . The rear end of the insulator 300 may be screwed into the threaded portion of the diffuser 100 . As such, the insulator 300 prevents the diffuser 100 from being exposed to the outside while being coupled to the outside of the diffuser 100, and separates the welding tip 200 and the nozzle 400 so as to prevent the welding tip 200 from being exposed to the outside. The current supplied through the nozzle 400 is prevented from being transferred.
더불어, 상기 인슐레이터(300)의 선단 외주면, 즉 노즐(400)의 후단과 연결되는 단부의 외주면에는 접촉감소홈(310)이 구비될 수 있다. 이러한, 접촉감소홈(310)은 노즐(400)의 후단 내주면과 인슐레이터(300) 선단의 접촉면적을 감소시키는 바, 용접작업시 노즐(400)에서 인슐레이터(300)로 열전달율을 저하시켜 열에 의한 인슐레이터(300)의 손상이 발생되는 것을 최소화할 수 있게 한다. 이때, 접촉감소홈(310)은 노즐(400)로부터 열전달을 최소화할 수 있도록 인슐레이터(300)의 길이방향, 즉 인슐레이터(300)의 선단에서 후단 방향으로 상호 이격되게 복수 개가 인슐레이터(300)의 외주면에 구비될 수 있다. 그리고, 복수 개의 접촉감소홈(310)은 인슐레이터(300)의 선단으로 갈수록 노즐(400)과의 접촉면적을 줄여 노즐(400)로부터 전달되는 열전달율을 안정적으로 감소시킬 수 있도록 인슐레이터(300)의 선단에서 후단 방향으로 갈수록 순차적으로 면적이 넓어지는 형태로 구비될 수 있다.In addition, a contact reduction groove 310 may be provided on an outer circumferential surface of the front end of the insulator 300, that is, an outer circumferential surface of an end connected to the rear end of the nozzle 400. The contact reduction groove 310 reduces the contact area between the inner circumferential surface of the rear end of the nozzle 400 and the front end of the insulator 300, and reduces the heat transfer rate from the nozzle 400 to the insulator 300 during welding, thereby reducing the insulator by heat. It is possible to minimize the occurrence of damage to (300). At this time, a plurality of contact reduction grooves 310 are spaced apart from each other in the longitudinal direction of the insulator 300, that is, in the direction from the front end to the rear end of the insulator 300, so as to minimize heat transfer from the nozzle 400. can be provided in In addition, the plurality of contact reduction grooves 310 reduce the contact area with the nozzle 400 toward the front end of the insulator 300 so that the heat transfer rate transferred from the nozzle 400 can be stably reduced. It may be provided in a form in which the area is sequentially widened toward the rear end.
상기 노즐(400)은 인슐레이터(300)에 결합된 상태로 용접팁(200)을 감싸도록 설치되며, 외부에서 공급된 후 가스배출공(101)을 통해 배출된 보호가스를 용접부위로 이동되게 가이드하는 부분이다. 이러한, 노즐(400)은 용접팁(200)을 감싸도록 내측을 길이방향으로 관통되게 한 관 구조로 구비된다. 이같이, 노즐(400)은 용접팁(200)을 감싸도록 배치되면서, 노즐(400)의 내주면과 용접팁(200) 외주면 사이에 유체의 이동이 이루어지는 유로가 마련되게 하고, 이러한 유로는 디퓨져(100)의 가스배출공(101)을 통해 배출되는 보호가스가 용접부위 'a' 지점을 둘러싸는 방향으로 배출되게 가이드하는 역할을 한다.The nozzle 400 is installed to surround the welding tip 200 while being coupled to the insulator 300, and guides the protective gas supplied from the outside and then discharged through the gas discharge hole 101 to the welding part. Part. The nozzle 400 is provided with a tubular structure through which the inner side is penetrated in the longitudinal direction so as to surround the welding tip 200. As such, the nozzle 400 is disposed to surround the welding tip 200, and a flow path through which the fluid moves is provided between the inner circumferential surface of the nozzle 400 and the outer circumferential surface of the welding tip 200. ) serves to guide the protective gas discharged through the gas discharge hole 101 to be discharged in a direction surrounding the welding portion 'a' point.
이러한, 상기 노즐(400)의 후단은 인슐레이터(300)의 선단에 결합된다. 이때, 노즐(400)의 후단은 인슐레이터(300)의 선단에 회전 가능하게 구비될 수도 있다. 이같이, 노즐(400)의 후단이 인슐레이터(300)의 선단에 회전 가능하게 구비될 경우, 보호가스 집중가이드부(410,410a)의 위치를 작업자가 쉽게 변경되게 할 수 있다. 도 4를 참조하면, 노즐(400)의 후단 테두리 부분에는 노즐(400)의 둘레로 상호 이격되게 복수 개의 절개홈(401)이 구비되어, 인슐레이터(300)의 선단 외경크기에 따라 노즐(400)의 후단이 쉽게 벌어질 수 있게 하여 인슐레이터(300)의 선단 외측에 쉽게 삽입 배치될 수 있다. 그리고, 노즐(400)의 후단 외주면에는 인슐레이터(300)의 선단 외측을 노즐(400)의 후단에 삽입상태로 연결시 노즐(400)의 후단을 가압하는 가압링부재(403)를 삽입 배치할 수 있도록 링설치홈(402)이 구비될 수 있다.The rear end of the nozzle 400 is coupled to the front end of the insulator 300 . At this time, the rear end of the nozzle 400 may be rotatably provided at the front end of the insulator 300 . In this way, when the rear end of the nozzle 400 is rotatably provided at the front end of the insulator 300, the position of the protective gas concentration guide parts 410 and 410a can be easily changed by the operator. Referring to FIG. 4, a plurality of incision grooves 401 are provided at the rear edge of the nozzle 400 to be spaced apart from each other around the nozzle 400, and the nozzle 400 It can be easily inserted and disposed outside the front end of the insulator 300 by allowing the rear end to be easily opened. In addition, a pressure ring member 403 for pressurizing the rear end of the nozzle 400 may be inserted and disposed on the outer circumferential surface of the rear end of the nozzle 400 when the outside of the front end of the insulator 300 is connected to the rear end of the nozzle 400 in an inserted state. A ring installation groove 402 may be provided.
그리고, 상기 노즐(400)의 선단 테두리 내주면, 즉 노즐(400)의 출구 부분에 인접한 노즐(400) 내주면에는 보호가스 집중가이드부(410,410a)가 마련될 수 있다. 이러한, 보호가스 집중가이드부(410,410a)는 노즐(400)과 용접팁(200) 사이를 통해 이동된 후 노즐(400)의 외부, 즉 용접부위로 배출되는 보호가스 중 일부의 보호가스가 용접부위 'a' 지점을 향해 배출되는 유동흐름이 발생되도록 가이드한다. 여기서, 보호가스 집중가이드부(410,410a)는 노즐(400)을 통해 배출되는 보호가스의 배출방향을 기준으로 가스퍼짐 가이드부(210,210a)보다 전방에 배치되도록 노즐(400)의 내주면에 구비될 수 있다.In addition, shielding gas concentration guide parts 410 and 410a may be provided on an inner circumferential surface of the front edge of the nozzle 400, that is, an inner circumferential surface of the nozzle 400 adjacent to an outlet portion of the nozzle 400. The shielding gas concentration guide parts 410 and 410a move between the nozzle 400 and the welding tip 200 and then some of the shielding gas discharged to the outside of the nozzle 400, that is, the welding part, passes through the welding part. It guides the flow flow discharged toward the point 'a' to occur. Here, the protective gas concentration guide parts 410 and 410a may be provided on the inner circumferential surface of the nozzle 400 so as to be disposed in front of the gas spreading guide parts 210 and 210a based on the discharge direction of the protective gas discharged through the nozzle 400. can
또한, 상기 노즐(400)에 구비된 보호가스 집중가이드부(410,410a)는 용접을 위해 용접모재(1) 방향으로 예각 또는 둔각상태로 경사지게 배치시, 용접부위 'a' 지점을 기준으로 용접모재(1)로부터 먼 부위인 'a1' 지점에서 용접부위 'a' 지점으로 보호가스가 일정 둘레만큼만의 유동 흐름이 가이드될 수 있도록 노즐(400)의 내주면 둘레 중 일부 영역 둘레로 연장되게 구비된다. 보다 상세하게는 보호가스 집중가이드부(410,410a)는 노즐(400)의 내주면 둘레의 20 ~ 40% 영역 둘레를 가지도록 노즐(400)의 선단 내주면에 구비될 수 있다. 특히, 보호가스 집중가이드부(410,410a)가 구비시, 보호가스 집중가이드부(410,410a)가 구비된 노즐(400) 내주면 영역 둘레 길이가 노즐(400)의 내주면 둘레의 20%미만으로 구비될 경우, 용접부위 'a' 지점을 기준으로 용접모재(1)로부터 먼 부위인 'a1' 지점에서 용접부위 'a' 지점 방향으로의 보호가스 유동 흐름이 안정적으로 유도되기 어렵고, 보호가스 집중가이드부(410,410a)가 구비된 노즐(400) 내주면 영역 둘레 길이가 노즐(400)의 내주면 둘레의 40% 초과하여 구비될 경우, 오히려 용접부위 'a' 지점을 기준으로 용접모재(1)로부터 먼 부위인 'a1' 지점에서 보호가스의 배출유량이 급격하게 감소되면서 보호가스가 용접모재(1)의 표면까지 이동되지 못하면서 용접모재(1)로부터 먼 부위인 'a1'지점에서 용접부위 'a' 지점에 대한 외부공기 차단효과가 떨어지게 된다.In addition, when the shielding gas concentration guide parts 410 and 410a provided in the nozzle 400 are inclined at an acute or obtuse angle in the direction of the welding base material 1 for welding, the welding base material is based on the point 'a' of the welding part. It is provided to extend around a partial area of the inner circumference of the nozzle 400 so that the flow of the protective gas can be guided only by a certain circumference from the point 'a 1 ', which is a part far from (1), to the point 'a' of the welding part. . More specifically, the protective gas concentration guide units 410 and 410a may be provided on the inner circumferential surface of the front end of the nozzle 400 so as to have a circumference of 20 to 40% of the circumference of the inner circumferential surface of the nozzle 400 . In particular, when the protective gas concentration guide parts 410 and 410a are provided, the circumferential length of the inner circumferential area of the nozzle 400 equipped with the protective gas concentration guide parts 410 and 410a is less than 20% of the inner circumferential circumference of the nozzle 400. In this case, it is difficult to stably induce the flow of the shielding gas from the point ' a1 ', which is a part far from the welding base material 1, to the point 'a' of the welding part based on the point 'a' of the welding part, and the shielding gas concentration guide When the circumferential length of the inner circumferential area of the nozzle 400 with the parts 410 and 410a exceeds 40% of the inner circumferential circumference of the nozzle 400, it is rather far from the welding base material 1 based on the welding part 'a' point. As the discharge flow rate of the shielding gas is rapidly reduced at the point 'a 1 ', which is the part, the shielding gas cannot move to the surface of the welding base material ( 1 ). The external air blocking effect for the point a' is reduced.
도 4를 참조하면, 상기 보호가스 집중가이드부(410)는 노즐(400) 선단 내주면으로부터 용접팁(200) 내주면 방향으로 돌출되는 돌기 형태로 구비될 수 있다. 이때, 보호가스 집중가이드부(410)는 반원형으로 돌출된 단면형태를 가지는 돌기 구조로 구비될 수 있다. 이같이, 보호가스 집중가이드부(410)가 돌기 형태로 돌출되게 구비된 경우 노즐(400)의 선단 테두리 내주면과 용접팁(200) 외주면 사이의 유체 배출공간을 좁아지게 하면서, 노즐(400)을 통해 배출되는 일부의 보호가스가 용접부위 'a' 지점을 향하는 유동흐름이 유도되게 가이드한다. 또한, 보호가스 집중가이드부(410)가 돌기 형태로 돌출되게 구비될 경우, 보호가스 집중가이드부(410)가 노즐(400)을 통해 이동되는 보호가스의 유동흐름이 충돌되게 하면서 배출 유량은 감소시키고, 보호가스 집중가이드부(410)가 구비되는 않은 나머지 노즐(400)의 영역을 통해 배출되는 보호가스의 속도벡터값을 커지게 하면서 바람과 같은 외력이 발생되더라도 용접부위 'a'지점으로의 외부공기 유입이 안정적으로 차단된다.Referring to FIG. 4 , the protective gas concentration guide part 410 may be provided in the form of a protrusion protruding from the inner circumferential surface of the front end of the nozzle 400 toward the inner circumferential surface of the welding tip 200 . At this time, the protective gas concentration guide unit 410 may be provided with a protruding structure having a cross-section protruding in a semicircular shape. As such, when the protective gas concentration guide unit 410 is protruded in the form of a protrusion, the fluid discharge space between the inner circumferential surface of the tip edge of the nozzle 400 and the outer circumferential surface of the welding tip 200 is narrowed through the nozzle 400. A portion of the discharged shielding gas guides the flow toward the point 'a' of the welding area to be induced. In addition, when the shielding gas concentration guide part 410 protrudes in the form of a protrusion, the discharge flow rate is reduced while the shielding gas concentration guide part 410 collides with the flow of the shielding gas moving through the nozzle 400. and while increasing the velocity vector value of the shielding gas discharged through the area of the remaining nozzle 400 that is not provided with the shielding gas concentration guide part 410, even if an external force such as wind is generated, the welding part to the point 'a' The inflow of outside air is stably blocked.
도 5를 참조하면, 다른 실시예에 따른 보호가스 집중가이드부(410a)로, 노즐(400) 선단 내주면으로부터 노즐(400) 내측으로 함몰된 홈 형태로 구비될 수도 있다. 이같이, 보호가스 집중가이드부(410a)가 홈 형태로 노즐(400) 내측으로 함입되게 구비된 경우에도 노즐(400) 내주면을 따라 이동하는 일부의 보호가스가 용접부위 'a'을 향하는 유동흐름이 발생되게 가이드한다. 이때, 보호가스 집중가이드부(410a)가 홈 형태로 함입되게 구비시, 보호가스 집중가이드부(410a)는 노즐(400)의 내주면을 통한 보호가스의 배출 유동흐름을 안정적으로 이루어지게 가이드함과 더불어 노즐(400)을 통해 배출되는 보호가스 중 일부의 보호가스만이 용접부위 'a' 지점을 향하는 유동흐름이 유발되게 가이드할 수 있도록 반원형의 단면형태를 가지도록 구비되는 것이 바람직하나, 이에 한정하지 않음은 물론이다.Referring to FIG. 5 , the shielding gas concentration guide unit 410a according to another embodiment may be provided in a groove shape recessed from the inner circumferential surface of the tip of the nozzle 400 toward the inside of the nozzle 400 . In this way, even when the protective gas concentration guide part 410a is provided to be recessed into the nozzle 400 in the form of a groove, a portion of the protective gas moving along the inner circumferential surface of the nozzle 400 flows toward the welding portion 'a'. guide to occur. At this time, when the shielding gas concentration guide part 410a is provided to be recessed in the form of a groove, the shielding gas concentration guide part 410a guides the discharge flow of the shielding gas through the inner circumferential surface of the nozzle 400 in a stable manner, In addition, it is preferable to have a semicircular cross-sectional shape so that only a portion of the protective gas discharged through the nozzle 400 can guide the flow toward the welding part 'a' point, but is limited to this. Of course not.
이같이, 상기 노즐(400)에 형성된 보호가스 집중가이드부(410,410a)는 용접을 위해 용접모재(1)에 노즐(400)을 예각 또는 둔각상태로 경사지게 배치시, 용접부위 'a'지점을 기준으로 용접모재(1)로부터 먼 부위 'a1' 지점에 배치되게 하는 바, 노즐(400)을 통해 보호가스가 배출될 때, 용접모재(1)로부터 먼 부위인 'a1' 지점에서 배출되는 보호가스가 용접부위 'a' 지점 방향으로 배출되게 가이드하여, 'a1'지점과 모재(1) 사이를 통해 외부 공기의 유입이 안정적으로 차단되게 하면서 용접 불량 발생을 방지한다. 앞서 설명한 바와 같이, 보호가스 집중가이드부(410,410a)가 구비시, 보호가스의 유동흐름이 충돌되면서 속도벡터값이 커짐에 따라 용접모재(1)로부터 먼 부위 'a1' 지점으로 보호가스의 배출 유량은 감소하고, 보호가스 집중가이드부(410,410a)가 구비된 노즐(400)의 일부 영역을 제외한 나머지 노즐(400)의 내주면 영역 부분에서는 보호가스 집중가이드부(410,410a)에 의해 상대적으로 보호가스의 유동흐름이 집중되는데, 특히, 용접부위 'a'지점을 기준으로 용접모재(1)로부터 가까운 부위 'a2' 지점에서 보호가스의 유동흐름이 집중됨에 따라 속도벡터값이 커지면서 용접부위 'a' 지점을 기준으로 용접부위 'a' 지점 반대방향을 향한 보호가스의 용접모재(1) 방향으로 배출 유동이 안정적으로 유발된다.As such, when the nozzle 400 is inclined at an acute angle or an obtuse angle on the welding base material 1 for welding, the shielding gas concentration guide parts 410 and 410a formed on the nozzle 400 are based on the point 'a' of the welding part. To be disposed at the 'a 1 ' point far from the welding base material 1, when the protective gas is discharged through the nozzle 400, the discharged at the 'a 1 ' point far from the welding base material 1 By guiding the shielding gas to be discharged in the direction of point 'a' of the welding area, the inflow of outside air is stably blocked between the point 'a 1 ' and the base material 1, preventing welding defects from occurring. As described above, when the shielding gas concentration guide parts 410 and 410a are provided, as the flow of the shielding gas collides and the velocity vector value increases, the shielding gas moves to the point 'a 1 ' far from the welding base material 1. The discharge flow rate decreases, and the inner circumferential area of the nozzle 400, except for some areas of the nozzle 400 provided with the shielding gas concentration guide parts 410 and 410a, is relatively reduced by the shielding gas concentration guide parts 410 and 410a. The flow of the shielding gas is concentrated. In particular, as the flow of the shielding gas is concentrated at the point 'a 2 ' close to the welding base material (1) based on the point 'a' of the welding part, the velocity vector value increases and the welding part Based on the point 'a', the discharge flow is stably induced in the direction of the welding base material (1) of the shielding gas toward the opposite direction of the point 'a' of the welding part.
그리고, 상기 노즐(400)의 선단 외주면, 보다 상세하게는 보호가스 집중가이드부(410,410a)가 구비된 일부 영역 위치와 동일한 위치의 노즐(400) 선단 외주면 일측에는 작업자가 보호가스 집중가이드부(410,410a)의 위치를 쉽게 인지할 수 있게 하는 위치 표시부(420)가 구비될 수 있다. 즉, 위치 표시부(420)는 노즐(400)을 용접모재(1) 방향으로 예각 또는 둔각으로 경사지게 배치시 노즐(400)의 보호가스 집중가이드부(410,410a)가 구비된 일부 영역을 제외한 나머지 영역이 용접부위를 기준으로 용접모재에 더 가깝게 배치되게 하도록 작업자가 보호가스 집중가이드부(410,410a)의 위치를 쉽게 인지할 수 있게 한다.In addition, on one side of the outer circumferential surface of the front end of the nozzle 400, more specifically, on one side of the outer circumferential surface of the front end of the nozzle 400 at the same position as the position of the partial area provided with the protective gas concentration guide parts 410 and 410a, the operator is guided by the protective gas concentration guide ( A location display unit 420 for easily recognizing the location of 410 and 410a may be provided. That is, when the nozzle 400 is inclined at an acute angle or an obtuse angle in the direction of the welding base material 1, the position display unit 420 is the rest area except for the partial area where the shielding gas concentration guide parts 410 and 410a of the nozzle 400 are provided. It is possible for the operator to easily recognize the position of the protective gas concentration guide parts 410 and 410a so as to be closer to the welding base material based on the welding region.
이같은, 상기 위치 표시부(420)는 노즐(400)의 선단 외주면에 표식 형태로 구비되는 바, 작업자로 하여금 보호가스 집중가이드부(410,410a)의 위치를 인지할 수 있도록 하여 작업자가 용접작업 전에 용접부위 'a' 지점을 기준으로 용접모재(1)로부터 먼 부위인 'a1' 지점 위치에 보호가스 집중가이드부(410,410a)가 위치하도록 노즐(400)을 회전시켜 위치를 조정하거나 토치 본체의 파지 위치를 변경할 수 있게 한다.As such, the position display unit 420 is provided in the form of a mark on the outer circumferential surface of the front end of the nozzle 400, so that the operator can recognize the position of the protective gas concentration guide unit 410, 410a, so that the operator can weld before welding Based on the point 'a', the position is adjusted by rotating the nozzle 400 so that the shielding gas concentration guide part 410, 410a is located at the point 'a 1 ', which is a far part from the welding base material 1, or Allows the grip position to be changed.
도 6 및 도 7과 같이, 상기 노즐(400)의 보호가스 집중가이드부(410,410a)가 구비된 노즐(400)의 일부 영역 부분을 제외한 나머지 영역인 노즐(400) 반대측 부분에는 중량을 증대시키는 무게중심 회전조절부(430)를 설치할 수 있다. 이러한, 무게중심 회전조절부(430)는 노즐(400)을 용접모재(1) 방향으로 둔각 또는 예각상태로 경사지게 배치시, 노즐(400)의 보호가스 집중가이드부(410,410a)가 구비된 일부 영역을 제외한 나머지 영역 위치가 용접부위 'a'지점을 기준으로 용접모재(1)로부터 가까운 부위인 'a2' 지점에 배치된 상태로 노즐(400)의 무게중심이 유지되도록 노즐(400)을 회전되게 한다. 이러한, 무게중심 회전조절부(430)는 노즐(400)의 원주방향을 기준으로 보호가스 집중가이드부(410,410a) 반대측에 배치되도록 노즐(400)의 후단 외주면에 구비된 것으로 도시하였으나, 이에 한정하지 않고 노즐(400)의 원주방향을 기준으로 보호가스 집중가이드부(410,410a) 반대측에 배치되도록 노즐(400)의 선단 외주면에 구비될 수도 있다.As shown in FIGS. 6 and 7, the portion opposite the nozzle 400, which is the remaining area except for the partial area portion of the nozzle 400 provided with the protective gas concentration guide parts 410 and 410a of the nozzle 400, increases the weight. A center of gravity rotation control unit 430 may be installed. When the nozzle 400 is inclined at an obtuse angle or an acute angle in the direction of the welding base material 1, the center of gravity rotation control unit 430 is a portion of the nozzle 400 provided with the protective gas concentration guide parts 410 and 410a. The nozzle 400 is operated so that the center of gravity of the nozzle 400 is maintained in a state in which the location of the remaining area excluding the area is disposed at the point 'a 2 ', which is a part close to the welding base material 1 based on the point 'a' of the welding part. make it rotate The center of gravity rotation control unit 430 is shown as being provided on the outer circumferential surface of the rear end of the nozzle 400 so as to be disposed on the opposite side of the protective gas concentration guide unit 410 and 410a based on the circumferential direction of the nozzle 400, but is limited thereto. It may be provided on the outer circumferential surface of the front end of the nozzle 400 so as to be disposed on the opposite side of the protective gas concentration guide parts 410 and 410a based on the circumferential direction of the nozzle 400.
이와 같이 구성된 일 실시예의 가스 용접용 토치 헤드를 이용한 용접 작업을 위한 보호가스 배출시 보호가스의 유동흐름에 대해 도 8 내지 도 13을 참조하여 설명하면 다음과 같다.The flow of the shielding gas when the shielding gas is discharged for the welding operation using the torch head for gas welding according to the embodiment configured as described above will be described with reference to FIGS. 8 to 13 .
먼저, 도 8 내지 도 9의 경우, 용접부위에 1m/s의 속도로 외부 공기의 흐름이 가해지는 환경을 기준으로, 종래의 가스용접용 토치 헤드에 보호가스로 이산화탄소를 25L/min 로 공급하는 상태에서 배출방향으로 이동되는 보호가스의 유동흐름에 따른 속도벡터값을 나타낸 시뮬레이션 결과이다. 특히 도 8의 경우 가스퍼짐 가이드부(210,210a)와 보호가스 집중가이드부(410,410a)가 구비되지 않은 종래의 가스용접용 토치 헤드 구조이며, 도 9의 경우 용접팁(200)에만 보호가스의 유동흐름을 변경시키는 영역이 구비된 가스용접용 토치 헤드 구조로서, 이와 같이 종래의 가스용접용 토치 헤드의 경우 용접모재(1)로부터 먼 부위에 대한 보호가스의 배출시 용접부위 'a' 방향으로 속도벡터값의 증가효과가 크지 않은 것을 알 수 있다.First, in the case of FIGS. 8 to 9, carbon dioxide is supplied as a protective gas to a conventional gas welding torch head at a rate of 25 L/min based on an environment in which a flow of external air is applied at a speed of 1 m/s to the welding area. It is a simulation result showing the velocity vector value according to the flow of the shielding gas moving in the discharge direction in In particular, in the case of FIG. 8, the conventional gas welding torch head structure is not provided with the gas spreading guide parts 210 and 210a and the protective gas concentration guide parts 410 and 410a, and in the case of FIG. As a gas welding torch head structure equipped with a region for changing the flow flow, in the case of a conventional gas welding torch head, when the protective gas is discharged to a region far from the welding base material (1), it is directed toward the welding region 'a'. It can be seen that the effect of increasing the velocity vector value is not large.
이에 반해, 도 10 및 도 11과 같이 일 실시예에 따른 가스 용접용 토치 헤드의 경우 가스퍼짐 가이드부(210,210a)와 보호가스 집중가이드부(410,410a)에 의해 용접팁(200)과 노즐(400) 사이를 유동하는 보호가스 및 노즐(400)에서 용접부위로 배출되는 보호가스의 속도벡터값이 앞서 도 8 및 도 9에 나타낸 종래의 가스용접용 토치 헤드를 통해 용접부위로 배출되는 보호가스의 속도벡터값보다 각각 커짐을 알 수 있다. 특히, 용접모재(1)로부터 먼 부위에 대한 보호가스의 배출시 용접부위 'a' 방향으로 일부의 보호가스 이동에 따른 속도벡터값이 크게 유도되면서 용접모재(1)로부터 먼 지점에서도 용접모재(1)로의 외부 공기가 유입되는 것을 안정적으로 차단할 수 있음을 유추할 수 있다.On the other hand, in the case of a gas welding torch head according to an embodiment as shown in FIGS. 10 and 11, the welding tip 200 and the nozzle ( 400) and the velocity vector value of the shielding gas discharged from the nozzle 400 to the welding part is the speed of the shielding gas discharged to the welding part through the conventional gas welding torch head shown in FIGS. 8 and 9 It can be seen that each becomes larger than the vector value. In particular, when the shielding gas is discharged to a part far from the welding base material (1), the velocity vector value according to the movement of some of the shielding gas in the direction of 'a' of the welding part is greatly induced, and the welding base material ( It can be inferred that the inflow of outside air into 1) can be stably blocked.
여기서, 도 10 및 도 11은 용접부위에 1m/s의 속도로 외부 공기의 흐름이 가해지는 환경을 기준으로, 도 10은 일 실시예의 가스용접용 토치 헤드에 보호가스로 이산화탄소를 25L/min 로 공급하는 상태에서 배출방향으로 이동되는 보호가스의 유동흐름에 따른 속도벡터값이며, 도 11은 일 실시예의 가스용접용 토치 헤드에 보호가스로 이산화탄소를 15L/min 로 공급하는 상태에서 배출방향으로 이동되는 보호가스의 유동흐름에 따른 속도벡터값이다. 이를 통해 일 실시예의 가스 용접용 토치 헤드로 공급되는 보호가스의 공급량을 25L/min에서 15L/min 로 감소시킨 상태에서도 일 실시예에 따른 가스 용접용 토치 헤드의 경우 가스퍼짐 가이드부(210,210a)와 보호가스 집중가이드부(410,410a)에 의해 용접팁(200)과 노즐(400) 사이를 유동하는 보호가스 및 노즐(400)에서 용접부위로 배출되는 보호가스 이동에 따른 속도벡터값도 각각 안정적으로 커지는 상태로 유도됨을 알 수 있다. 이를 통해 일 실시예의 가스 용접용 토치 헤드의 경우, 보호가스의 사용량을 감소시킨 상태에서도 안정적인 용접작업을 가능하게 하여 용접비용 감소 및 보호가스 사용 감소에 따른 환경오염 유발을 최소화할 수 있음을 알 수 있다.Here, Figures 10 and 11 are based on the environment in which the flow of external air is applied at a speed of 1m / s to the welding area, Figure 10 is a gas welding torch head of one embodiment Supplying carbon dioxide as a protective gas at 25L / min 11 is a velocity vector value according to the flow flow of the shielding gas moving in the discharge direction in the state of being moved in the discharge direction in a state in which carbon dioxide is supplied at 15 L/min as the shielding gas to the torch head for gas welding in one embodiment. It is the velocity vector value according to the flow of the shielding gas. Through this, even in a state in which the supply amount of the protective gas supplied to the gas welding torch head of the embodiment is reduced from 25 L/min to 15 L/min, in the case of the gas welding torch head according to the embodiment, the gas spreading guide parts 210 and 210a And the velocity vector value according to the movement of the shielding gas flowing between the welding tip 200 and the nozzle 400 and the shielding gas discharged from the nozzle 400 to the welding part by the shielding gas concentration guide part 410, 410a is also stable. It can be seen that it is induced in an enlarged state. Through this, in the case of the torch head for gas welding of one embodiment, it is possible to perform stable welding work even in a state in which the amount of shielding gas is reduced, thereby reducing welding costs and reducing the use of shielding gas. It can be seen that environmental pollution can be minimized. there is.
이와 같이, 일 실시예에 따른 가스 용접용 토치 헤드는, 용접팁(200)의 외주면에는 가스퍼짐 가이드부(210,210a)가 구비되어 노즐(400)에서 보호가스의 배출시, 보호가스의 배출 방향이 용접부위 'a' 지점을 기준으로 용접부위 반대 방향을 향하는 퍼짐 상태로 유동 흐름이 유도되고, 노즐(400)의 선단 내주면 일측에는 보호가스 집중가이드부(410,410a)가 노즐(400)을 통해 배출되는 보호가스 중 일부의 보호가스가 용접부위 방향을 향해 배출되는 유동 흐름이 유도되게 가이드 하는 바, 노즐(400)이 용접모재(1) 방향으로 경사지게 배치함과 더불어 보호가스 집중가이드부(410,410a)가 용접모재(1)로부터 먼 지점에 배치시킨 상태로 용접 작업을 수행시, 용접모재(1)로부터 먼 부위인 'a1' 지점에서 용접부위 'a' 방향으로 일부의 보호가스 유동이 증대된 속도벡터값으로 유동되게 유도하고 용접모재로부터 가까운 부위인 'a2' 지점에서는 'a1' 지점에서 감소되는 보호가스의 배출유량만큼 보호가스의 배출유량이 증가되면서 속도벡터값이 증대된 상태로 배출이 이루어지는 바, 보호가스의 배출량 증대없이도 용접부위 'a' 지점에 대한 외부공기의 유입을 안정적으로 차단할 수 있게 되면서 용접 불량을 방지할 수 있게 된다.As such, in the torch head for gas welding according to an embodiment, the gas spreading guide parts 210 and 210a are provided on the outer circumferential surface of the welding tip 200, so that when the nozzle 400 discharges the protective gas, the protective gas discharge direction Based on the point 'a' of the welding area, a fluid flow is induced in a spreading state toward the opposite direction of the welding area, and on one side of the inner circumferential surface of the front end of the nozzle 400, the protective gas concentration guide parts 410 and 410a pass through the nozzle 400. Some of the shielding gas discharged guides the flow of the discharged gas toward the welding part, so that the nozzle 400 is inclined in the direction of the welding base material 1, and the shielding gas concentration guide unit 410,410 When welding is performed in a state in which a) is placed at a point far from the welding base material 1, a portion of the shielding gas flows in the direction of the welding part 'a' at the point 'a 1 ', which is a far part from the welding base material 1. It induces the flow with the increased velocity vector value, and at the point 'a 2 ', which is close to the welding base material, the discharge flow rate of the shielding gas increases as much as the discharge flow rate of the shielding gas decreased at the 'a 1 ' point, and the velocity vector value increases. Since the discharge is performed in this state, it is possible to stably block the inflow of external air to the welding part 'a' without increasing the discharge amount of the shielding gas, thereby preventing welding defects.
본 발명은 도면에 도시된 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 다른 실시예가 가능하다는 점을 이해할 것이다. 따라서, 본 발명의 진정한 기술적 보호 범위는 첨부된 청구범위의 기술적 사상에 의하여 정해져야 할 것이다.Although the present invention has been described with reference to the embodiments shown in the drawings, this is only exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

Claims (14)

  1. 토치 본체에 결합되는 디퓨져, 디퓨져의 선단에 배치된 상태로 와이어를 외부로 배출시키면서 아크가 발생되는 용접팁, 디퓨져 외측에 배치된 인슐레이터, 용접팁을 감싸도록 인슐레이터에 연결된 상태로 보호가스의 배출을 가이드하는 노즐을 포함하는 가스 용접용 토치 헤드에 있어서,A diffuser coupled to the torch body, a welding tip that generates an arc while discharging wires to the outside while being disposed at the front end of the diffuser, an insulator disposed outside the diffuser, and a shielding gas discharged while connected to the insulator to cover the welding tip. In the gas welding torch head including a nozzle to guide,
    상기 용접팁의 외주면에 구비되며, 보호가스의 배출방향을 기준으로 용접팁의 외경이 증대되는 영역을 가지는 가스퍼짐 가이드부;a gas spreading guide part provided on an outer circumferential surface of the welding tip and having an area in which an outer diameter of the welding tip increases based on a discharge direction of the shielding gas;
    상기 노즐의 내주면에 구비되며, 보호가스의 배출방향을 기준으로 가스퍼짐 가이드부보다 전방에 배치되어, 노즐을 통해 배출되는 보호가스 중 일부의 보호가스가 용접부위 방향을 향하는 유동 흐름으로 유도되게 가이드하는 보호가스 집중가이드부를 포함하는 가스 용접용 토치 헤드.It is provided on the inner circumferential surface of the nozzle and is disposed in front of the gas spreading guide unit based on the discharge direction of the shielding gas, so that some of the shielding gas discharged through the nozzle is guided to a flow toward the welding area. Torch head for gas welding including a protective gas concentration guide to do.
  2. 청구항 1에 있어서,The method of claim 1,
    상기 보호가스 집중가이드부는, 노즐의 내주면 둘레 중 일부 영역 둘레로 구비된 가스 용접용 토치 헤드.The protective gas concentration guide portion is provided around a partial area of the inner circumferential circumference of the nozzle, the torch head for gas welding.
  3. 청구항 1 또는 청구항 2에 있어서,According to claim 1 or claim 2,
    상기 보호가스 집중가이드부는, 노즐의 선단 가장자리에 배치된 가스 용접용 토치 헤드.The protective gas concentrating guide unit is a torch head for gas welding disposed at the front edge of the nozzle.
  4. 청구항 1에 있어서,The method of claim 1,
    상기 보호가스 집중가이드부는 노즐의 내주면으로부터 용접팁 방향으로 돌출된 형태를 가지는 가스 용접용 토치 헤드.The gas welding torch head having a form in which the protective gas concentration guide part protrudes from the inner circumferential surface of the nozzle toward the welding tip.
  5. 청구항 4에 있어서,The method of claim 4,
    상기 보호가스 집중가이드부는 타원형 또는 반원형으로 돌출된 단면형태를 가지는 가스 용접용 토치 헤드.The gas welding torch head having a cross-sectional shape protruding in an elliptical or semicircular shape.
  6. 청구항 1에 있어서,The method of claim 1,
    상기 보호가스 집중가이드부는 노즐의 내주면으로부터 노즐 내측방향으로 함입된 형태를 가지는 가스 용접용 토치 헤드.The gas welding torch head having a form in which the protective gas concentration guide part is recessed from the inner circumferential surface of the nozzle toward the inside of the nozzle.
  7. 청구항 1에 있어서,The method of claim 1,
    상기 가스퍼짐 가이드부의 후측에 배치되도록 용접팁의 외주면에 구비되며, 보호가스의 배출방향을 기준으로 용접팁의 외경이 축소되는 영역을 가지게 하는 연결 가이드부가 더 구비된 가스 용접용 토치 헤드.Gas welding torch head further provided with a connection guide portion provided on the outer circumferential surface of the welding tip to be disposed at the rear side of the gas spreading guide portion and having a region in which the outer diameter of the welding tip is reduced based on the discharge direction of the protective gas.
  8. 청구항 2에 있어서,The method of claim 2,
    상기 노즐을 용접모재 방향으로 예각 또는 둔각으로 경사지게 배치시, 노즐의 보호가스 집중가이드부가 구비된 일부 영역을 제외한 나머지 영역이 용접부위를 기준으로 용접모재에 더 가깝게 배치되며,When the nozzle is disposed inclined at an acute angle or an obtuse angle in the direction of the welding base material, the remaining area except for the partial area provided with the protective gas concentration guide part of the nozzle is disposed closer to the welding base material based on the welding part,
    상기 노즐에는 보호가스 집중가이드부의 위치를 작업자가 인지할 수 있게 하는 위치 표시부가 구비된 가스 용접용 토치 헤드.The nozzle has a gas welding torch head equipped with a position display unit that allows the operator to recognize the position of the protective gas concentration guide unit.
  9. 청구항 2에 있어서,The method of claim 2,
    상기 노즐은 인슐레이터에 회전 가능하게 배치되며,The nozzle is rotatably disposed on the insulator,
    상기 노즐에 구비되어, 노즐을 용접모재 방향으로 경사지게 배치시, 노즐의 보호가스 집중가이드부가 구비된 일부 영역을 제외한 나머지 영역이 용접부위를 기준으로 용접모재에 더 가깝게 배치되도록 노즐을 회전시키는 무게중심 회전조절부가 구비된 가스 용접용 토치 헤드.It is provided in the nozzle, and when the nozzle is inclined in the direction of the welding base material, the center of gravity rotates the nozzle so that the rest of the nozzle area, except for a partial area provided with the shielding gas concentration guide part, is disposed closer to the welding base material based on the welding part. Torch head for gas welding equipped with a rotation control unit.
  10. 청구항 9에 있어서,The method of claim 9,
    상기 무게중심 회전조절부는, 노즐의 원주방향을 기준으로 보호가스 집중가이드부 반대측에 배치되도록 노즐의 후단 외주면에 구비된 가스 용접용 토치 헤드.The center of gravity rotation control unit is a gas welding torch head provided on the outer circumferential surface of the rear end of the nozzle so as to be disposed on the opposite side of the protective gas concentration guide unit based on the circumferential direction of the nozzle.
  11. 청구항 10에 있어서,The method of claim 10,
    상기 무게중심 회전조절부는, 노즐의 원주방향을 기준으로 보호가스 집중가이드부 반대측에 배치되도록 노즐의 선단 외주면에 구비된 가스 용접용 토치 헤드.The center of gravity rotation control unit is a torch head for gas welding provided on the outer circumferential surface of the tip of the nozzle so as to be disposed on the opposite side of the protective gas concentration guide unit based on the circumferential direction of the nozzle.
  12. 청구항 2에 있어서,The method of claim 2,
    상기 보호가스 집중가이드부는 노즐 내주면 둘레의 20 ~ 40% 영역 둘레로 구비된 가스 용접용 토치 헤드.The protective gas concentration guide part is provided around the 20 to 40% area around the inner circumferential surface of the nozzle, the torch head for gas welding.
  13. 청구항 1에 있어서,The method of claim 1,
    상기 인슐레이터의 외주면에는 인슐레이터의 선단에서 후단 방향으로 상호 이격되게 복수의 접촉감소홈이 구비된 가스 용접용 토치 헤드.Gas welding torch head provided with a plurality of contact reduction grooves spaced apart from each other in the direction from the front end to the rear end of the insulator on the outer circumferential surface of the insulator.
  14. 청구항 13에 있어서,The method of claim 13,
    상기 복수의 접촉감소홈은 인슐레이터의 선단에서 후단 방향으로 갈수록 순차적으로 면적이 넓어지게 구비된 가스 용접용 토치 헤드.The plurality of contact reduction grooves are provided with a larger area sequentially from the front end to the rear end of the insulator.
PCT/KR2022/015684 2021-12-30 2022-10-17 Torch head for gas welding WO2023128175A1 (en)

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KR20210193018 2021-12-30
KR10-2021-0193018 2021-12-30
KR10-2022-0128933 2022-10-07
KR1020220128933A KR20230103922A (en) 2021-12-30 2022-10-07 Torch head for gas welding

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WO2023128175A1 true WO2023128175A1 (en) 2023-07-06

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010023063A (en) * 2008-07-17 2010-02-04 Tookin:Kk Welding torch
KR20120044135A (en) * 2010-10-27 2012-05-07 현대제철 주식회사 Gmaw welding torch with excellent molten weld pool protecting property
KR101231087B1 (en) * 2012-03-02 2013-03-07 정영재 Torch head for gas welding
KR20130090582A (en) * 2012-02-06 2013-08-14 강학진 A replacement nozzle for a carbon dioxide welding torch
KR102198174B1 (en) * 2020-08-31 2021-01-04 정재우 Welding torch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010023063A (en) * 2008-07-17 2010-02-04 Tookin:Kk Welding torch
KR20120044135A (en) * 2010-10-27 2012-05-07 현대제철 주식회사 Gmaw welding torch with excellent molten weld pool protecting property
KR20130090582A (en) * 2012-02-06 2013-08-14 강학진 A replacement nozzle for a carbon dioxide welding torch
KR101231087B1 (en) * 2012-03-02 2013-03-07 정영재 Torch head for gas welding
KR102198174B1 (en) * 2020-08-31 2021-01-04 정재우 Welding torch

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