Welding torch nozzle cleaning device

Abstract

To provide a welding torch nozzle cleaner which can easily and reliably remove spatter adhered to an inner surface of a nozzle of a welding torch.SOLUTION: A welding torch nozzle cleaner comprises a long blade 10 which extends in parallel with a prescribed rotation axis α, and a rotary drive mechanism 11 which rotates the blade 10 around the prescribed rotation axis α. The blade 10 is configured from a thin plate having a pair of wide plane parts 101, and is located in such a manner that the plane part 101 is along a circumferential direction of the rotation axis α. The blade 10 is elastically deformed so as to be deflected outward in a radial direction with respect to the rotation axis α by receiving action of centrifugal force when rotating around the prescribed rotation axis α by the rotary drive mechanism 11 after being inserted inside a nozzle 21 in such a manner that the plane part 101 faces an inner surface of the nozzle 21 of a welding torch 2, whereby the blade removes spatter while slide-contacting the inner surface of the nozzle 21 of the welding torch 2.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a nozzle cleaner device for removing spatter adhering to the inner surface of a welding torch.

Background Art

[0002] Generally, in arc welding, spatter scatters during welding and adheres to the inner surface of the nozzle. If this spatter is left unattended, the spatter accumulates, causing turbulence in the gas flow and resulting in welding defects due to poor shielding. Therefore, it is necessary to remove the spatter adhering to the inner surface of the nozzle after welding. And various devices for removing the spatter adhering to the inner surface of the nozzle of such a welding torch have been proposed.

[0003] For example, Patent Document 1 discloses a device composed of a cleaner main body and a drive mechanism of the cleaner main body. The cleaner main body includes a ring-shaped first rotary cleaner head for removing adhered spatter at the tip of the nozzle and a second rotary cleaner head composed of a radially expandable and contractible cylindrical brush member for removing adhered spatter on the inner surface of the nozzle that is inserted into the central hole of the cleaner head in a vertically movable manner.

[0004] Further, Patent Document 2 includes a pre-treatment device in which a plurality of long wires with the tips bent inward and short wires with the tips formed into outward hook shapes are erected on a circumference slightly smaller than the diameter of the nozzle opening end of a fixed table, and a main treatment device 20 in which a plurality of long brushing rods and short brushing rods with fine wires planted at the tips are erected on a circumference slightly smaller than the diameter of the nozzle opening end of a rotating table and a cylindrical wire brush is erected outside thereof. A device for removing spatter near the gas outlet and annular spatter at the nozzle opening end is disclosed.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

[0006] However, conventional devices have a problem in that the spatter removal member is composed of multiple linear brush members or rod-shaped brushing rods, which may be able to elastically deform to easily bend radially outward during rotation, but also elastically deform to easily bend circumferentially backward, and the removal member itself is formed in a simple linear or rod shape, so it cannot adequately remove spatter adhering to the inner surface of the nozzle. Moreover, in conventional devices, the removal member often undergoes plastic deformation at the end of rotation and does not return to its original shape, making it difficult to reuse the removal member many times.

[0007] The present invention has been made in view of the above-mentioned problems, and aims to provide, firstly, a welding torch nozzle cleaner device that can easily and reliably remove spatter adhering to the inner surface of the welding torch nozzle, and secondly, a device that can be used repeatedly. [Means for solving the problem]

[0008] To achieve the above objective, the present invention provides a welding torch nozzle cleaner device for removing spatter adhering to the inner surface of a welding torch nozzle, comprising a long blade extending parallel to a predetermined axis of rotation, and a rotational drive mechanism for rotating the blade around the predetermined axis of rotation, wherein the blade is composed of a thin plate having a pair of wide flat portions, the flat portions are arranged in a manner that they are aligned with the circumferential direction of the axis of rotation, and after the flat portions are inserted into the inside of the nozzle of the welding torch in a manner that they face the inner surface of the nozzle of the welding torch, when rotated around the predetermined axis of rotation by the rotational drive mechanism, the device elastically deforms so as to bend radially outward relative to the axis of rotation due to the acting of centrifugal force, thereby removing spatter while sliding against the inner surface of the welding torch nozzle.

[0009] According to this design, the blade is composed of a thin plate having a pair of wide flat sections, and the flat sections are arranged to align with the circumferential direction of the rotation axis. Therefore, when centrifugal force acts on it during rotation, it reliably elastically deforms so as to bend radially outward relative to the rotation axis, thereby allowing it to slide against the inner surface of the welding torch nozzle. Furthermore, because the blade has wide flat sections, it does not elastically deform towards the rear in the circumferential direction, and the front end of the flat sections in the circumferential direction is thin like a blade, so spatter adhering to the inner surface of the welding torch nozzle can be easily and reliably removed. Moreover, since the blade elastically deforms while following changes in the inner diameter of the welding torch nozzle, the same blade can be used to accommodate various inner surface shapes of the nozzle, such as the tapered section at the tip and the straight section at the back of the nozzle.

[0010] Furthermore, the blade may be made of a superelastic alloy that elastically deforms to bend radially outward due to centrifugal force acting on it during rotation, and returns to its original radially inward shape when the centrifugal force is removed at the end of rotation. In this case, because the blade returns to its original radially inward shape when the centrifugal force is removed at the end of rotation due to the properties of the superelastic alloy, the blade can be used repeatedly.

[0011] Furthermore, the blade may be made of a superelastic alloy mainly composed of nickel and titanium. This ensures that the blade can reliably return to its original shape when the centrifugal force is released at the end of rotation.

[0012] Furthermore, the blade may be formed in the shape of a thin plate with a circumferential width of 5 mm to 7 mm and a radial thickness of 0.5 mm to 1 mm. With this configuration, by making the width of the flat portion 7 mm or less relative to the blade's thickness of 0.5 mm to 1 mm, the blade can be easily inserted into the nozzle of the welding torch before rotation, and the blade can be reliably deflected radially outward during rotation. Also, by making the width of the flat portion 5 mm or more relative to the blade's thickness of 0.5 mm to 1 mm, the radial and circumferential plastic deformation of the blade can be reduced or prevented at the end of rotation, and the blade can be reliably returned to its original shape. In addition, by making the blade thickness 0.5 mm to 1 mm, the ends on both sides of the blade in the circumferential direction can be made thin like a blade.

[0013] Furthermore, the tip of the blade in the direction of the rotation axis may be formed at an acute angle. This makes it easier to insert the blade into the nozzle of the welding torch.

[0014] Furthermore, the blade may have curved ends on one or both sides in the circumferential direction of the flat portion. This allows for easy and reliable removal of spatter adhering to the inner surface of the welding torch nozzle while preventing the blade from excessively grinding the inner surface of the welding torch nozzle.

[0015] Furthermore, the rotary drive mechanism may include a drive motor section and a conical rotating base section provided above the drive motor section, with the base end of the blade connected to the top of the rotating base section. This arrangement prevents spatter removed from the welding torch nozzle from sliding down the conical rotating base section, thus preventing spatter from accumulating on the rotary drive mechanism.

[0016] Furthermore, the rotational drive mechanism may have a weight positioned symmetrically to the base end of the blade with respect to the rotation axis. This allows the blade and the weight to balance each other as they rotate around the rotation axis, thus preventing or reducing unwanted vibrations of the blade.

[0017] Furthermore, protective covers may be provided around the blade and the rotational drive mechanism. This prevents spatter removed from the inner surface of the welding torch from scattering outside the device.

[0018] Furthermore, the protective cover may be made transparent around at least the tip of the blade. This allows the tip of the blade to be seen through the transparent portion of the protective cover, making it easier to insert the blade into the nozzle of the welding torch.

[0019] Furthermore, the protective cover may be provided with a funnel-shaped discharge section for discharging spatter removed from the inner surface of the welding torch nozzle downwards. This allows spatter removed from the inner surface of the welding torch nozzle and falling from around the rotary drive mechanism to be discharged directly into a discharge box or the like below.

[0020] Furthermore, the present invention relates to a spatter removal method for removing spatter adhering to the inner surface of a welding torch nozzle using the nozzle cleaning device described above, comprising the steps of: moving the welding torch downward so that the tip of the blade contacts the side surface of the tip of the welding torch; rotating the blade at a low speed around the axis of rotation by a rotation drive mechanism so that the tip of the blade slides against the side surface of the tip of the welding torch, removing spatter adhering to the tip of the welding torch; and moving the welding torch further downward and rotating the blade at a gradually increasing speed around the axis of rotation by a rotation drive mechanism so that centrifugal force acts on the blade, causing it to elastically deform so that it bends radially outward with respect to the axis of rotation, thereby removing spatter while sliding against the inner surface of the welding torch nozzle. [Effects of the Invention]

[0021] According to the present invention, the blade is composed of a thin plate having a pair of wide flat portions, and the flat portions are arranged in a manner along the circumferential direction of the rotation axis. Therefore, when rotating, due to the action of centrifugal force, it can surely elastically deform so as to bend radially outward with respect to the rotation axis, and thus can be in sliding contact with the inner surface of the nozzle of the welding torch. Moreover, since the blade has wide flat portions, it does not elastically deform rearward in the circumferential direction, and since the end portion on the front side in the circumferential direction of the flat portion has a thin shape like a blade, spatter adhering to the inner surface of the nozzle of the welding torch can be easily and surely removed.

Brief Description of the Drawings

[0022] [Figure 1] It is a perspective view showing a nozzle cleaner device and a welding torch according to a first embodiment of the present invention. [Figure 2] It is a side view showing the nozzle cleaner device of FIG. 1. [Figure 3] It is a (a) front view and (b) side view showing the blade of FIG. 1. [Figure 4] It is a sectional view taken along the arrow IV-IV of the blade of FIG. 3. [Figure 5] It is a longitudinal side view showing the process of inserting the blade into the nozzle of the welding torch. [Figure 6] It is a perspective view showing a nozzle cleaner device and a welding torch according to a second embodiment. [Figure 7] It is a longitudinal sectional view showing the nozzle cleaner device and the welding torch of FIG. 6.

Modes for Carrying Out the Invention

[0023] <First Embodiment> Next, a first embodiment of a nozzle cleaner device (hereinafter referred to as the present device 1) according to the present invention will be described with reference to FIGS. 1 to 5. In the present embodiment, the direction in which the blade 10 exists with respect to a predetermined rotation axis α of the present device 1 will be described as the radial direction, and the direction in which the blade 10 rotates will be described as the circumferential direction.

[0024] As shown in Figures 1 and 2, the device 1 comprises a long blade 10 extending parallel (including substantially parallel) along a predetermined rotation axis α, and a rotation drive mechanism 11 that rotates the blade 10 around the predetermined rotation axis α, and removes spatter adhering to the inner surface of the nozzle 21 and the side surface of the tip 22 of the welding torch 2. The welding torch 2 comprises a nozzle 21, a tip 22 provided inside the nozzle 21, and a welding wire 23 provided on the tip 22.

[0025] As shown in Figure 3, the blade 10 is made of a thin metal plate having a pair of wide flat sections 101 with an overall length L and width W, and a narrow side section 102 with an overall length L and thickness T.

[0026] Furthermore, the blade 10 is made of an elastically deformable metal material, and as will be described later, when it is rotated around the rotation axis α by the rotation drive mechanism 11, the centrifugal force acts on it, causing the flat portion 101 to elastically deform so that it bends radially outward.

[0027] In particular, in this embodiment, the blade 10 is made of a superelastic alloy that elastically deforms so that the flat portion 101 bends radially outward due to centrifugal force acting on it when it rotates around the axis, and returns to its original shape when the centrifugal force is removed at the end of rotation around the axis. A superelastic alloy mainly composed of nickel and titanium is particularly preferred. This allows the blade 10 to be used repeatedly.

[0028] Furthermore, as shown in Figure 3(a), the tip portion 101a of the blade 10 in the direction of the rotation axis α is formed in the shape of an acute isosceles triangle when viewed from the front. This makes it easier to insert the blade 10 into the inside of the nozzle 21 of the welding torch 2.

[0029] Furthermore, as shown in Figures 3(a) and 4, the blade 10 has curved ends 101b, 101b on both sides in the circumferential direction of the radially outer flat portion 101 in the middle of its length. This prevents the blade 10 from excessively scraping the inner surface of the nozzle 21 of the welding torch 2.

[0030] Furthermore, it is preferable that the blade 10 is formed in a thin plate shape with a circumferential width W of 5 mm to 7 mm and a radial thickness T of 0.5 mm to 1 mm. By making the width W of the flat portion 101 7 mm or less relative to the thickness T of the blade 10 of 0.5 mm to 1 mm, the blade 10 can be reliably inserted into the inside of the nozzle 21 of the welding torch 2 before rotation, and the blade 10 can be reliably deflected radially outward during rotation. In addition, by making the width W of the flat portion 101 5 mm or more relative to the thickness T of the blade 10 of 0.5 mm to 1 mm, the radial and circumferential plastic deformation of the blade 10 can be reduced or prevented at the end of rotation, and the blade 10 can be reliably returned to its original shape. Furthermore, by making the thickness T of the blade 10 0.5 mm to 1 mm, the ends 101b on both sides of the circumferential direction of the blade 10 can be formed thin like a blade.

[0031] As shown in Figures 1 and 2, the rotary drive mechanism 11 comprises a drive motor unit 111 provided on the device body 3 via a support bracket 31, a conical rotating base unit 112 provided above the drive motor unit 111, and electrical wiring 32 provided below the drive motor unit 111, so that the rotating base unit 112 rotates on a predetermined rotation axis α by the drive motor unit 111.

[0032] Furthermore, the base end portion 101c of the blade 10 is connected to the top of the rotating base portion 112 of the rotation drive mechanism 11. Specifically, the base end portion 101c of the blade 10 is connected to the top of the rotating base portion 112 at a position offset radially outward by a distance K from the rotation axis α, and the flat portion 101 is arranged so as to be aligned circumferentially with respect to the rotation axis α. As a result, above the rotating base portion 112 of the rotation drive mechanism 11, the blade 10 is positioned such that, at a distance K from the rotation axis α, one flat portion 101 faces radially outward with respect to the rotation axis α, the other flat portion 101 faces radially inward with respect to the rotation axis α, one side portion 102 faces circumferentially forward with respect to the rotation axis α, and the other side portion 102 faces circumferentially rearward with respect to the rotation axis α.

[0033] Then, when the drive motor unit 111 rotates the rotating base unit 112 around a predetermined rotation axis α, the blade 10 rotates in a manner that traces a circle of radius K around the predetermined rotation axis α, and the flat portion 101 of the blade 10 elastically deforms so that it bends radially outward due to the centrifugal force acting on it. Note that the blade 10 does not elastically deform towards the rear in the circumferential direction during rotation.

[0034] In this embodiment, the weight 113 is positioned symmetrically to the base end 101c of the blade 10 with respect to the rotation axis α. As a result, the blade 10 and the weight 113 rotate around the rotation axis α while balancing each other, thereby preventing or reducing unwanted vibrations of the blade 10.

[0035] Next, the operation of this device 1 will be explained with reference to Figure 5.

[0036] First, as shown in Figure 5(a), when the welding torch 2 moves downward with the axis of the welding wire 23 of the welding torch 2 roughly aligned with the rotation axis α of the device 1, the inner flat portion 101 at the tip of the blade 10 comes into contact with the side surface of the tip 22 of the welding torch 2. Then, as the rotation drive mechanism 11 rotates the blade 10 at a low speed around the rotation axis α, the tip of the blade 10 slides against the side surface of the tip 22 of the welding torch 2, removing spatter adhering to the tip 22.

[0037] Next, as shown in Figure 5(b), as the welding torch 2 moves further downward and the rotation drive mechanism 11 rotates the blade 10 around the rotation axis α, gradually increasing its speed, the blade 10 is inserted into the nozzle 21 of the welding torch 2 and, due to the centrifugal force acting on it, elastically deforms so as to bend radially outward, thereby sliding against the inner surface of the tip (tapered portion) of the nozzle 21 of the welding torch 2 and removing spatter.

[0038] Next, as shown in Figure 5(c), as the welding torch 2 moves further downward and the rotation drive mechanism 11 rotates the blade 10 around the rotation axis α at an increasing speed, the blade 10 is further inserted into the nozzle 21 of the welding torch 2 and elastically deforms to bend radially outward due to centrifugal force, thereby sliding against the inner surface of the inner part (straight section) of the nozzle 21 of the welding torch 2 and removing spatter.

[0039] Furthermore, the spatter removed from the inner surface of the nozzle 21 of the welding torch 2 falls downward to the rotary drive mechanism 11, such as by sliding down the conical rotating base portion 112 of the rotary drive mechanism 11.

[0040] Next, when the removal of spatter adhering to the inner surface of the nozzle 21 of the welding torch 2 is complete, the welding torch 2 moves upward, and as the rotational drive mechanism 11 gradually reduces the rotational speed of the blade 10 around the rotation axis α and stops, the blade 10 is pulled out to the outside of the nozzle 21 while returning to its original radially inward shape.

[0041] As described above, with this device 1, the blade 10 is made of a thin plate having a pair of wide flat sections 101, and the flat sections 101 are arranged in a manner that is aligned with the circumferential direction of the rotation axis α. Therefore, when centrifugal force acts on it during rotation, it reliably elastically deforms so as to bend radially outward with respect to the rotation axis α, thereby allowing it to slide against the inner surface of the nozzle 21 of the welding torch 2. Furthermore, because the blade 10 has wide flat sections 101, it does not elastically deform towards the rear in the circumferential direction, and the front end of the flat section 101 in the circumferential direction is thin like a blade, so spatter adhering to the inner surface of the nozzle 21 of the welding torch 2 can be easily and reliably removed. Moreover, since the blade 10 elastically deforms while following the change in the inner diameter of the nozzle 21 of the welding torch 2, the same blade 10 can be used to accommodate various inner surface shapes of the nozzle 21, such as the tapered part at the tip and the straight part at the back of the nozzle 21 of the welding torch 2.

[0042] <Second Embodiment> Next, a second embodiment of the device 1 will be described with reference to Figures 6 and 7. In the following description, only configurations different from the above embodiment will be described, and identical configurations will be omitted from the description and given the same reference numerals.

[0043] In this embodiment, a protective cover 12 is provided around the blade 10 and the rotation drive mechanism 11. This protective cover 12 consists of a first cylindrical protective cover 121 made of transparent synthetic resin or glass, a second cylindrical protective cover 122 made of opaque metal or synthetic resin, a positioning part 13 provided on the upper part of the first protective cover 121, and a funnel-shaped discharge part 14 made of metal or synthetic resin provided on the lower part of the second protective cover 122.

[0044] Since the first protective cover 121 and the second protective cover 122 are provided around the device 1, spatter removed from the inner surface of the welding torch 2 can be prevented from scattering outside the device. In addition, because the first protective cover 121 is made transparent, the tip 101a of the blade 10 can be seen through the transparent portion of the protective cover 12, making it easier to insert the blade 10 into the nozzle 21 of the welding torch 2.

[0045] The positioning unit 13 is used to position the nozzle 21 of the welding torch 2 and is equipped with a sensor switch 15. When the sensor switch 15 detects the welding torch 2, the rotating base 112 of the rotary drive mechanism 11 rotates, initiating spatter removal.

[0046] After being removed from the nozzle 21 of the welding torch 2, the discharge unit 14 receives the spatter that falls inside the protective cover 12 and discharges it directly into an externally provided discharge box (not shown).

[0047] In the above embodiment, a single blade 10 is provided, but multiple blades 10 may be provided around a predetermined rotation axis α. However, since superelastic alloys mainly composed of nickel and titanium are expensive, and a single blade 10 is sufficient to remove spatter, it is preferable to use a single blade 10.

[0048] Furthermore, although the spatter adhering to the side surface of the tip 22 is removed by the blade 10, and then the spatter adhering to the inner surface of the nozzle 21 is removed, it is also possible to remove only the spatter adhering to the inner surface of the nozzle 21 without removing the spatter adhering to the side surface of the tip 22.

[0049] Although embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiments within the same scope as the present invention, or within the equivalent scope. [Explanation of Symbols]

[0050] 1...This device 10…Blade 101...Plane part 101a...Tip 101b...Ends on both sides in the circumferential direction 101c...Proximal end 102…Side part 11…Rotational drive mechanism 111... Drive motor section 112... Rotating base section 113... Weight 12… Protective cover 121...First protective cover 122...Second protective cover 13…Positioning section 14...Discharge section 15... Sensor switch 2…Welding torch 21…Nozzle 22...Chip 23... Welding wire 3…Main unit of the device 31…Support bracket 32…Electrical wiring α... axis of rotation

Claims

1. A welding torch nozzle cleaner device for removing spatter adhering to the inner surface of the welding torch nozzle, It comprises a long blade extending parallel to a predetermined axis of rotation, and a rotational drive mechanism that rotates the blade around the predetermined axis of rotation, The blade is composed of a thin plate having a pair of wide flat sections, and the flat sections are arranged in such a manner that they are aligned with the circumferential direction of the axis of rotation. After the planar portion is inserted into the nozzle of the welding torch in a manner that faces the inner surface of the nozzle, when it is rotated around a predetermined axis of rotation by the rotation drive mechanism, the centrifugal force acts on it, causing it to elastically deform so as to bend radially outward relative to the axis of rotation, thereby removing spatter while sliding against the inner surface of the welding torch nozzle. The nozzle cleaning device for a welding torch is characterized in that the blade is formed in the shape of a thin plate with a circumferential width of 5 mm to 7 mm and a radial thickness of 0.5 mm to 1 mm.

2. The nozzle cleaner device for a welding torch according to claim 1, wherein the blade is made of a superelastic alloy that elastically deforms to bend radially outward when centrifugal force acts on it during rotation, and returns to its original radially inward shape when the centrifugal force is removed at the end of rotation.

3. The nozzle cleaning device for a welding torch according to claim 2, wherein the blade is a superelastic alloy mainly composed of nickel and titanium.

4. The nozzle cleaning device for a welding torch according to claim 1, wherein the tip of the blade in the direction of the rotation axis is formed in an acute angle.

5. The nozzle cleaning device for a welding torch according to claim 1, wherein the blade has curved ends on one or both sides in the circumferential direction of the flat portion.

6. The welding torch nozzle cleaner device according to claim 1, wherein the rotational drive mechanism comprises a drive motor section and a conical rotating base section provided above the drive motor section, and the base end of the blade is connected to the top of the rotating base section.

7. A welding torch nozzle cleaner device for removing spatter adhering to the inner surface of the nozzle of a welding torch, It comprises a long blade extending parallel to a predetermined axis of rotation, and a rotational drive mechanism that rotates the blade around the predetermined axis of rotation, The blade is composed of a thin plate having a pair of wide flat sections, and the flat sections are arranged in such a manner that they are aligned with the circumferential direction of the axis of rotation. After the planar portion is inserted into the nozzle of the welding torch in a manner that faces the inner surface of the nozzle, when it is rotated around a predetermined axis of rotation by the rotation drive mechanism, the centrifugal force acts on it, causing it to elastically deform so as to bend radially outward relative to the axis of rotation, thereby removing spatter while sliding against the inner surface of the welding torch nozzle. The rotational drive mechanism comprises a drive motor section and a conical rotating base section provided above the drive motor section, with the base end of the blade connected to the top of the rotating base section. The nozzle cleaning device for a welding torch is characterized in that the rotational drive mechanism has a weight provided at a position symmetrical to the base end of the blade with respect to the rotation axis.

8. The nozzle cleaning device for a welding torch according to claim 6, wherein a protective cover is provided around the blade and the rotation drive mechanism.

9. The nozzle cleaning device for a welding torch according to claim 8, wherein the protective cover is formed transparent around at least the tip of the blade.

10. The welding torch nozzle cleaner device according to claim 8, wherein the protective cover is provided with a funnel-shaped discharge section for discharging spatter removed from the inner surface of the welding torch nozzle downward.

11. A welding torch nozzle cleaner device for removing spatter adhering to the inner surface of the nozzle of a welding torch, It comprises a long blade extending parallel to a predetermined axis of rotation, and a rotational drive mechanism that rotates the blade around the predetermined axis of rotation, The blade is composed of a thin plate having a pair of wide flat sections, and the flat sections are arranged in such a manner that they are aligned with the circumferential direction of the axis of rotation. A spatter removal method for removing spatter adhering to the inner surface of a welding torch nozzle, characterized in that the planar portion is inserted inside the nozzle in a manner that faces the inner surface of the nozzle of the welding torch, and then, when rotated around a predetermined rotation axis by the rotation drive mechanism, the device elastically deforms so as to bend radially outward relative to the rotation axis due to the centrifugal force acting upon it, thereby removing spatter while sliding against the inner surface of the nozzle of the welding torch, The welding torch moves downward, causing the tip of the blade to come into contact with the side of the tip of the welding torch, The process involves a rotational drive mechanism causing the blade to rotate at a low speed around the axis of rotation, thereby removing spatter adhering to the tip of the welding torch while the tip of the blade slides against the side of the tip of the welding torch, and A method for removing spatter from a welding torch, characterized by the step of further moving the welding torch downward and, as the rotation drive mechanism causes the blade to rotate around the axis of rotation at a gradually increasing speed, centrifugal force acts on it, causing the blade to elastically deform so as to bend radially outward relative to the axis of rotation, thereby removing spatter while sliding against the inner surface of the nozzle of the welding torch.

Images