Welding modules and automatic welding equipment

Abstract

The welding module and automatic welding equipment of the present invention relate to the field of welding technology. The welding module is used to weld gaps to be welded and includes a base, a gas protection device that sprays protective gas in parallel along a first direction to form a protective gas-enclosed space, a bent tungsten electrode disposed within the protective gas-enclosed space, a swinging device for driving the bent tungsten electrode to swing, and a wire feeding device. The gas protection device is disposed on the base. The bent tungsten electrode is used to form a molten pool at a predetermined position within the gap to be welded. The wire feeding device is used to transport welding wire into the molten pool. The protective gas sprayed along the first direction provides gas protection for the bent tungsten electrode, the gap to be welded, and the molten pool. This improves the adaptability of the product to the narrowness of the gap to be welded; furthermore, the single-channel parallel delivery of protective gas greatly simplifies the product structure; and secondly, the absence of a flat torch shell improves the ease of observation.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and more specifically, to a welding module and an automatic welding device. Background Technology

[0002] Welding equipment is typically classified according to the specific welding application. For example, for applications such as narrow-gap welding, specialized equipment is usually employed. Figure 1 The flat-gun type welding torch head shown generally consists of a flat torch shell, a tungsten electrode, a tungsten electrode clamp, a cooling block, a water channel, a gas channel, a gas screen, a conductive rod, a rotary motor, and other accessories. The front end of the tungsten electrode 40 extends from inside the flat torch shell 50 for welding.

[0003] However, flat-gun welding torch tips still have some shortcomings in practical applications:

[0004] First, because insulation needs to be ensured between the tungsten electrode and the flat gun shell, a sufficiently large gap needs to be reserved between the flat gun shell and the tungsten electrode. As a result, the thickness and width of the flat gun shell are always too large. Consequently, the welding torch tip cannot penetrate into the narrow gap for welding, and the welding equipment has poor adaptability to the narrow gap to be welded.

[0005] Secondly, during the welding process, protective gas, usually argon, needs to be introduced into both the inside and outside of the flat torch shell. The argon flowing inside the flat torch shell comes into direct contact with the tungsten electrode, providing a protective cover for the tungsten electrode, while the argon flowing outside the flat torch shell is used to protect the bevel and the molten pool. Thus, the dual-channel supply of protective gas will lead to an overly complex product structure.

[0006] In addition, during the welding process, it is necessary to observe the welding formation in real time, that is, to observe the position of the molten pool and the tip of the tungsten electrode. However, due to the large size of the flat gun shell and the relatively small extension of the tungsten electrode relative to the flat gun shell, it causes great inconvenience to the observation of the molten pool by the camera system. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a welding module and automatic welding equipment that are highly adaptable to the narrowness of the gap to be welded, have a simple structure, and are easy to observe.

[0008] The technical solution adopted by this invention to solve its technical problem is:

[0009] This application provides a welding module for welding gaps to be welded, comprising a base, a gas protection device that sprays protective gas in parallel along a first direction to form a protective gas envelope space, a bent tungsten electrode disposed in the protective gas envelope space, a swinging device for driving the bent tungsten electrode to swing, and a wire feeding device.

[0010] The gas protection device is disposed on the base. The bent tungsten electrode is used to form a molten pool at a predetermined position within the gap to be welded. The wire feeding device is used to transport the welding wire into the molten pool. The protective gas sprayed along the first direction will provide gas protection for the bent tungsten electrode, the gap to be welded, and the molten pool.

[0011] In some embodiments, the gas protection device includes a gas hood disposed on the base, a gas screen disposed inside the gas hood, and a vent disposed on the gas hood;

[0012] The bent tungsten electrode passes through the gas shroud and the gas screen, with the end of the bent tungsten electrode extending out of the gas shroud. The vent is used to supply protective gas into the gas shroud, and the gas screen is used to uniformly sieve the protective gas so that the protective gas is uniformly sprayed out of the gas shroud along the first direction.

[0013] In some embodiments, the central axis of the bent tungsten electrode coincides with the central axis of the gas sieve, and the central axis of the gas sieve is parallel to the first direction.

[0014] In some embodiments, the air screen has a plurality of screen holes, and each screen hole is symmetrically distributed about the center of the air screen.

[0015] In some embodiments, the gas protection device further includes a support plate disposed within the gas hood, a sealing ring disposed between the support plate and the inner wall of the gas hood, and an outlet rod passing through the support plate;

[0016] The support plate is used to support the rotation of the bent tungsten electrode, and the sealing ring is used to seal the fitting gap between the support plate and the gas shroud;

[0017] The gas outlet rod is used to guide the introduced protective gas through the support plate and the gas screen.

[0018] In some embodiments, the air hood includes a transparent cover.

[0019] In some embodiments, the swing device includes a swing drive member disposed on the base, a rotating disk connected to the swing drive member, and a bushing connected to the rotating disk;

[0020] The bent tungsten electrode passes through the bushing, and the rotating disk is used to drive the bushing to rotate under the drive of the swing drive, so that the bushing drives the bent tungsten electrode to rotate, thereby causing the end of the bent tungsten electrode to swing.

[0021] In some embodiments, the swinging device further includes a connecting rod with a waist hole and a sliding limiting member disposed on the rotating disk;

[0022] The connecting rod is connected to the bushing, and the sliding limit member passes through the waist hole. When the sliding limit member is driven by the rotating disk to rotate, it will slide in the waist hole. The sliding limit member is used to suspend the connecting rod to swing back and forth, thereby driving the bent tungsten electrode to swing back and forth.

[0023] In some embodiments, the oscillation angle of the bent tungsten electrode is less than 120°.

[0024] In some embodiments, the bent tungsten electrode includes a straight section and a bent section connected to each other, the length extension direction of the straight section is parallel to the first direction, the bent section is bent toward the welding direction, and the included angle between the bent section and the straight section is an obtuse angle.

[0025] In some embodiments, the welding module further includes a tungsten electrode cap for fixing the relative position of the bent tungsten electrode and the base.

[0026] In some embodiments, the welding module further includes a cooling device, which includes an inlet pipe, an outlet pipe, and a cooling block;

[0027] The inlet pipe and the outlet pipe are respectively disposed on the base. The bent tungsten electrode passes through the cooling block. The inlet pipe is used to guide the cooling liquid to the cooling block. After cooling the cooling block, the cooling liquid is discharged through the outlet pipe. The cooling block is used to cool the bent tungsten electrode.

[0028] In some embodiments, the welding module further includes a conductive device, which includes a conductive cable disposed on the base and a conductive block connected to the conductive cable;

[0029] The conductive block is used to draw the current from the conductive cable and further transmit it to the bent tungsten electrode.

[0030] On the other hand, this application also provides an automatic welding device, which includes a walking module and a welding module as described in any of the above technical solutions, wherein the base is disposed on the walking module, and the walking module is used to drive the welding module to walk along the gap to be welded.

[0031] In some embodiments, the walking module includes a walking track and a walking frame, the walking track being arranged side by side with the gap to be welded, and the walking frame being slidably disposed on the walking track; the base is disposed on the walking frame.

[0032] In some embodiments, the automatic welding equipment further includes a lifting module, which includes a lifting drive component disposed on the walking frame and a lifting guide rail disposed on the walking frame;

[0033] The base is slidably disposed on the lifting guide rail, and the lifting drive is drivenly connected to the base. The lifting drive is used to drive the base to slide along the lifting guide rail so that the bent tungsten electrode moves in the direction of penetrating or exiting the gap to be welded.

[0034] In some embodiments, the automatic welding equipment is used to weld two pipes together, with the ends of the two pipes aligned and abutting to form the gap to be welded; the traveling track is wound in a ring around the outer wall of the pipe.

[0035] In some embodiments, the automatic welding equipment further includes a control module, which includes a controller electrically connected to the lifting drive.

[0036] The welding module and automatic welding equipment of the present invention have at least the following beneficial effects:

[0037] The welding module and automatic welding equipment of the present invention relate to the field of welding technology. In the welding module, the gas protection device sprays protective gas in parallel along a first direction to form a protective gas covering space filled with protective gas. Then, the bent tungsten electrode is placed in the protective gas covering space, so that the gas sprayed in parallel along the first direction can provide gas protection for the bent tungsten electrode and also provide gas protection for the gap to be welded and the molten pool.

[0038] Thus, there is no need to set up a flat gun shell to guide the protective gas to protect the bent tungsten electrode, so that the depth of the bent tungsten electrode in the gap to be welded only needs to take into account the size and specifications of the bent tungsten electrode itself, which improves the adaptability of the product to the narrow gap to be welded; furthermore, the single-channel parallel delivery of protective gas also greatly simplifies the structure of the product; secondly, without the obstruction of the flat gun shell, the ease of observation is improved. Attached Figure Description

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0040] Figure 1 This is a schematic diagram of the structure of a flat-gun type welding torch head in related technologies;

[0041] Figure 2 This is a structural schematic diagram of an automatic welding device according to some preferred embodiments of the invention;

[0042] Figure 3 This is a structural schematic diagram of the automatic welding equipment in some preferred embodiments of the invention during use;

[0043] Figure 4 This is a structural schematic diagram of the welding module in some preferred embodiments of the invention;

[0044] Figure 5 yes Figure 4 A cross-sectional structural diagram of the welding module shown.

[0045] Figure 6 This is a schematic diagram of the swing position and structure of the bent tungsten electrode in some preferred embodiments of the present invention;

[0046] Figure 7 This is a schematic diagram of the bent tungsten electrode in some preferred embodiments of the present invention, viewed from another perspective.

[0047] Figure 8 This is a schematic diagram of the swing device in some preferred embodiments of the present invention. Detailed Implementation

[0048] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0049] Figure 2 and Figure 3 An automatic welding device 10 according to some preferred embodiments of the present invention is shown, which is used to weld the gap 20 to be welded, specifically, to weld two opposite bevels within the gap 20 to be welded.

[0050] like Figure 2 As shown, the automatic welding equipment 10 includes a walking module 1 and a welding module 2. The walking module 1 is used to drive the welding module 2 to move along the gap to be welded 20, and the welding module 2 is used to weld the gap to be welded 20.

[0051] like Figures 2 to 5 As shown, the welding module 2 includes a base 21, a gas protection device 22 that sprays protective gas parallel to the first direction X to form a protective gas enveloping space 22a, a bent tungsten electrode 23 disposed in the protective gas enveloping space 22a, a swinging device 24 for driving the bent tungsten electrode 23 to swing, and a wire feeding device 25.

[0052] The base 21 is mounted on the walking module 1, the gas protection device 22 is mounted on the base 21, the bent tungsten electrode 23 is used to form a molten pool (not shown in the figure) at a predetermined position in the gap to be welded 20, the wire feeding device 25 is used to transport the welding wire into the molten pool, and the protective gas sprayed along the first direction X will provide gas protection for the bent tungsten electrode 23, the gap to be welded 20 and the molten pool.

[0053] Understandably, the base 21 is used to support and mount the remaining devices or components. The gas protection device 22 is used to receive the protective gas and eject it in the first direction X. The protective gas can be argon or other gases, preferably those that can provide gas protection to prevent oxidation reactions. The bent tungsten electrode 23 is used to generate an electric arc between itself and the part to be welded after energization, so as to form a molten pool. The oscillating device 24 is used to provide the driving force to rotate the bent tungsten electrode 23. During the rotation of the bent tungsten electrode 23, the end of the bent tungsten electrode 23 exhibits an oscillating motion. The bent tungsten electrode 23 can be configured to be partially mounted on the base 21 for installation and fixation, while the remaining part is exposed in the protective gas enclosure space 22a for gas protection. The wire feeding device 25 is used to transport welding wire for welding. The welding wire is fed into the molten pool to melt and ultimately achieve the purpose of filling. The wire feeding device 25 can be a common welding wire feeding mechanism in related technologies. For example, the wire feeding device 25 can include a winding reel, a roller wire feeder, a hose, and a wire outlet. The welding wire is wound on the winding reel in a winding manner. The welding wire is fed into the hose by the roller wire feeder during rotation. The welding wire is fed along the wall of the hose to the wire outlet, passes through the through hole of the wire outlet, and is then fed to the welding direction Y of the bent tungsten electrode 23 to melt and fill the weld, thus completing the welding connection. Of course, the wire feeding device 25 can also adopt various welding wire feeding mechanisms commonly used in related technologies and is not limited to the implementation method in this embodiment.

[0054] It should be noted that the gap to be welded 20 can be formed when two parts that need to be welded together come into contact with each other, or it can be formed by a single part.

[0055] The protective gas envelope space 22a, formed by the uniformly sprayed protective gas along the first direction X, is filled with protective gas. Before welding begins, the protective gas envelope space 22a continuously disperses air as it forms, minimizing air exposure within its coverage area. Thus, during welding, the bent tungsten electrode 23, the welding gap 20, and the molten pool all receive gas protection within the protective gas envelope space 22a. The coverage area of ​​the protective gas envelope space 22a includes the welding operation area and the bevel near the operation area, protecting both the molten pool and the components being welded.

[0056] It should also be noted that the protective gas ejected along the first direction X can be a single gas stream with a large cross-section in the flow direction; or it can be multiple gas streams with smaller cross-sections in the flow direction, but the flow directions of the multiple gas streams are all parallel to each other. The goal is simply to cover the predetermined area to meet the requirements of the welding operation.

[0057] The parallel ejection of multiple airflows avoids mutual interference, increases the density of the protective gas within the protective gas-enclosed space 22a, thereby enhancing the air dispersion effect and ultimately improving the gas protection effect. Specifically, to achieve the goal of parallel ejection of the protective gas, multiple parallel air pipes can be used to discharge the protective gas, or components that guide and divert the protective gas can be used to discharge it; of course, other structures or components in related technologies that can achieve parallel gas ejection can also be adopted.

[0058] like Figures 2 to 5 As shown, in some embodiments, the gas protection device 22 includes a gas hood 221 disposed on the base 21, a gas screen 222 disposed inside the gas hood 221, and a vent 223 disposed on the gas hood 221.

[0059] The bent tungsten electrode 23 is inserted through the gas shroud 221 and the gas screen 222, and the end of the bent tungsten electrode 23 extends out of the gas shroud 221. The vent 223 is used to supply protective gas into the gas shroud 221. The gas screen 222 is used to uniformly sieve the protective gas so that the protective gas is uniformly sprayed out of the gas shroud 221 along the first direction X.

[0060] Understandably, the gas hood 221 serves two purposes: protecting the operator and preventing the wasteful dissipation of protective gas, thus ensuring a fuller protective gas coverage space 22a and further enhancing the gas protection effect. The gas screen 222 disperses the gas flow, separating the protective gas into multiple streams as it passes through it. These streams are then ejected parallel to each other along the first direction X, forming a full protective gas coverage space 22a. The vent 223 connects to the protective gas supply device for gas input. The end of the bent tungsten electrode 23 is used to penetrate deep into the welding gap 20 to draw out the arc and further form a molten pool.

[0061] It should be noted that in some embodiments, the gas hood 221 can be configured as a transparent hood, which not only provides protection but also facilitates observation by the user. Multiple gas sieves 222 can be used together to sieve the protective gas.

[0062] Preferably, in order to improve the air dispersion effect of the protective gas enveloping space 22a, that is, to improve the gas protection effect, in some embodiments, the flow velocity of the protective gas passing through the center of the air screen 222 is relatively large, while the flow velocity of the protective gas closer to the edge of the air screen 222 is weaker; in this way, the stronger protective gas in the center can diffuse from all sides, dispersing the air from the center of the protective gas enveloping space 22a to the periphery, further improving the gas protection effect.

[0063] like Figure 5As shown, in some embodiments, the central axis of the bent tungsten electrode 23 is parallel to the central axis of the air sieve 222, and the central axis of the air sieve 222 is parallel to the first direction X.

[0064] Understandably, with the central axis of the gas screen 222 parallel to the first direction X, the central axis of the gas screen 222 is the central axis of the protective gas-enclosed space 22a. The gas protection effect is better in this straight line direction. Therefore, the central axis of the bent tungsten electrode 23 coincides with the central axis of the gas screen 222, which can ensure that the bent tungsten electrode 23 can be protected by gas in all directions.

[0065] like Figure 5 As shown, in some embodiments, the air screen 222 has a plurality of screen holes 2221, and each screen hole 2221 is symmetrically distributed with respect to the center of the air screen 222.

[0066] Understandably, the sieve holes 2221 are used for airflow to pass through, and the arrangement of multiple sieve holes 2221 can achieve the purpose of uniformly sieving the airflow. Symmetrically distributed sieve holes 2221 can improve the uniform sieving effect of the protective gas. It should be noted that the aperture of each sieve hole 2221 can be the same or different, depending on the relative position of the protective gas and the air sieve 222 before sieving. For example, for the position where the unsieving protective gas directly impacts, the aperture of the sieve hole 2221 at that position on the air sieve 222 can be set to a smaller size to prevent the protective gas from flowing out directly in large quantities through the sieve hole 2221 at that position, thus ensuring the average sieving effect of the protective gas.

[0067] like Figure 5 As shown, in some embodiments, the gas protection device 22 further includes a support plate 224 disposed in the gas cover 221, a sealing ring 225 disposed between the support plate 224 and the inner wall surface of the gas cover 221, and an exhaust rod 226 disposed through the support plate 224.

[0068] The support plate 224 is used to support the rotation of the bent tungsten electrode 23, and the sealing ring 225 is used to seal the fitting gap between the support plate 224 and the gas cover 221; wherein, the gas outlet rod 226 is used to guide the introduced protective gas through to the space between the support plate and the gas screen 222.

[0069] Understandably, the support plate 224 is used to support the rotation of the bent tungsten electrode 23. Specifically, a bearing can be installed on the support plate 224 to support the rotation of the bent tungsten electrode 23. The sealing ring 225 is used to prevent the protective gas from flowing through the mating gap between the support plate 224 and the gas shroud 221. On the one hand, it prevents the input protective gas from entering through the mating gap, preventing the protective gas from flowing too turbulently onto the gas screen 222, ensuring that the protective gas can be uniformly sieved. On the other hand, it can also prevent the protective gas from flowing back between the support plate 224 and the gas screen 222, so that the protective gas between the support plate 224 and the gas screen 222 can only flow out after being sieved by the gas screen 222. In addition, it can also maintain a certain pressure between the support plate 224 and the gas screen 222, improving the sieving efficiency of the protective gas. The exhaust rod 226 is used to pass through the support plate 224, so that the protective gas can pass smoothly through the support plate 224 and flow to the gas screen 222.

[0070] It should be noted that the sealing ring 225 can be an O-ring, lip ring, or other shaped sealing ring, as long as it meets the sealing requirements. The number of venting rods 226 can be multiple, and all venting rods 226 have a hollow structure.

[0071] like Figure 4 , Figure 5 and Figure 8 As shown, in some embodiments, the swing device 24 includes a swing drive 241 disposed on the base 21, a rotating disk 242 connected to the swing drive 241, and a bushing 243 connected to the rotating disk 242.

[0072] The bent tungsten electrode 23 is inserted through the bushing 243. The rotating disk 242 is used to drive the bushing 243 to rotate under the drive of the swing drive 241, so that the bushing 243 drives the bent tungsten electrode 23 to rotate, thereby causing the end of the bent tungsten electrode 23 to swing.

[0073] Understandably, the oscillating drive 241 can be configured as a motor or other power mechanism; the rotating disk 242 is located on the base 21; and the bushing 243 is rotatably mounted on the base 21. The bushing 243 has a hole for the bent tungsten electrode 23 to pass through and be fixed.

[0074] It should be noted that the connection between the swing drive 241, the rotating disk 242 and the bushing 243 can be a direct connection or a connection through other intermediate components. For example, a speed reduction mechanism can be added between the swing drive 241 and the rotating disk 242.

[0075] like Figure 8 As shown, in some embodiments, the swing device 24 further includes a connecting rod 244 with a waist hole 2441 and a sliding limit member 245 disposed on the rotating disk 242;

[0076] The connecting rod 244 is connected to the bushing 243, and the sliding limit member 245 passes through the waist hole 2441. When the sliding limit member 245 is driven by the rotating disk 242 to rotate, it will slide in the waist hole 2441. The sliding limit member 245 is used for the ceiling connecting rod 244 to swing back and forth, thereby driving the bent tungsten electrode 23 to swing back and forth.

[0077] Understandably, the movement of the sliding limit member 245 as it rotates is a circular motion. The circularly moving sliding limit member 245 slides within the waist hole 2441, and by pressing against the wall of the waist hole 2441, it causes the connecting rod 244 to swing. The swinging connecting rod 244 drives the bushing 243 to rotate, which in turn drives the bent tungsten electrode 23 to rotate. The bent end of the bent tungsten electrode 23 then swings.

[0078] It should be noted that the width of the waist hole 2441 can be configured to be the same as the width of the sliding limit member 245 to avoid excessive clearance between the two, thereby preventing the bushing 243 from shaking or having rotational play during rotation.

[0079] like Figure 6 As shown, in some embodiments, the oscillation angle of the bent tungsten electrode 23 is less than 120°.

[0080] Understandably, a suitable swing angle can be flexibly selected based on the size of the gap 20 to be welded, the bevel inclination, and the current welding depth. Specifically, the rotational movement of the rotating disk 242 can always be limited within a predetermined angle, thereby adjusting the swing angle of the bent tungsten electrode 23. The swing angle of the bent tungsten electrode 23 is... Figure 6 The β angle shown.

[0081] like Figure 7 As shown, in some embodiments, the bent tungsten electrode 23 includes a straight section 231 and a bent section 232 connected to each other. The length extension direction of the straight section 231 is parallel to the first direction X, and the bent section 232 is bent toward the welding direction Y. The included angle between the bent section 232 and the straight section 231 is an obtuse angle.

[0082] Understandably, the straight section 231 extends beyond the gas protection device 22 and further into the gap 20 to be welded, while the bent section 232 is used to create a molten pool with the workpiece due to its electric arc, thus completing the weld connection. Current is transmitted through the straight section 231 to the bent section 232. The angle between the bent section 232 and the straight section 231 is... Figure 7 The α angle shown.

[0083] like Figure 4 and Figure 5 As shown, in some embodiments, the welding module 2 further includes a tungsten electrode cap 26, which is used to fix the relative position of the bent tungsten electrode 23 and the base 21.

[0084] Understandably, the tungsten electrode cap 26 and the base 21 can be configured to be threaded together. When it is necessary to adjust the amount of protrusion of the bent tungsten electrode 23 relative to the gas protection device 22, loosen the tungsten electrode cap 26, adjust the bent tungsten electrode 23 to the desired position, and then tighten the tungsten electrode cap 26 again, thus completing the fixation of the relative position of the bent tungsten electrode 23 and the base 21.

[0085] like Figure 4 and Figure 5 As shown, in some embodiments, the welding module 2 further includes a cooling device 27, which includes an inlet pipe 271, an outlet pipe 272, and a cooling block 273.

[0086] Water inlet pipe 271 and water outlet pipe 272 are respectively installed on base 21. Cooling block 273 is installed through the bent tungsten electrode 23. Water inlet pipe 271 is used to guide cooling liquid to cooling block 273. After cooling cooling block 273, the cooling liquid is discharged through water outlet pipe 272. Cooling block 273 is used to cool bent tungsten electrode 23.

[0087] Understandably, the cooling device 27 is used to cool the bent tungsten electrode 23. The inlet pipe 271 is used to introduce the cooling liquid, and the outlet pipe 272 is used to discharge the liquid after heat exchange with the cooling block 273. The cooling block 273 can be configured in the form of a block or column, etc.

[0088] like Figure 4 and Figure 5 As shown, in some embodiments, the welding module 2 further includes a conductive device 28, which includes a conductive cable 281 disposed on the base 21 and a conductive block 282 connected to the conductive cable 281; wherein, the conductive block 282 is used to receive and guide the current of the conductive cable 281 and further transmit it to the bent tungsten electrode 23.

[0089] Understandably, the conductive device 28 is used to deliver current to the bent tungsten electrode 23 so that an electric arc is formed between the bent tungsten electrode 23 and the workpiece to be welded. The conductive cable 281 is used to transmit current, and the conductive block 282 is used to connect the bent tungsten electrode 23 and the conductive cable 281.

[0090] like Figure 2 As shown, in some embodiments, the walking module 1 includes a walking track 11 and a walking frame 12. The walking track 11 and the gap to be welded 20 are arranged side by side, and the walking frame 12 is slidably arranged on the walking track 11; the base 21 is arranged on the walking frame 12.

[0091] Understandably, the walking track 11 can be a common track structure in related technologies. The walking frame 12 can be driven to move by the cooperation of gears and racks. Specifically, the gears mesh with the racks, and the racks are correspondingly set on the walking track 11. A motor is set on the walking frame 12 to drive the gears to rotate, and the rotating gears will cause the walking frame 12 to move along the walking track 11.

[0092] It should be noted that the walking track 11 and the gap to be welded 20 are arranged side by side. The purpose of this is that when the walking frame 12 moves the bent tungsten electrode 23, the bent tungsten electrode 23 is always located at the predetermined depth position of the gap to be welded 20, and the collision between the bent tungsten electrode 23 and the side wall of the gap to be welded 20 can be avoided.

[0093] like Figure 2 As shown, in some embodiments, the automatic welding equipment 10 further includes a lifting module 3, which includes a lifting drive 31 mounted on the walking frame 12 and a lifting guide rail 32 mounted on the walking frame 12.

[0094] The base 21 is slidably mounted on the lifting guide rail 32. The lifting drive component 31 is driven to connect with the base 21. The lifting drive component 31 is used to drive the base 21 to slide along the lifting guide rail 32 so that the bent tungsten electrode 23 moves in the direction of penetrating or exiting the gap 20 to be welded.

[0095] Understandably, the lifting module 3 is used to adjust the height of the base 21 relative to the workpiece being welded, thereby adjusting the height position of the bent tungsten electrode 23 on the workpiece. The lifting drive component 31 can be driven to the base 21 through a screw transmission mechanism, so that the power output by the lifting drive component 31 can drive the base 21 to slide along the lifting guide rail 32, thereby causing the bent tungsten electrode 23 on the base 21 to rise or fall relative to the workpiece being welded. The rising direction is the direction in which the bent tungsten electrode 23 exits the gap 20 to be welded, and the falling direction is the direction in which the bent tungsten electrode 23 enters the gap 20 to be welded.

[0096] like Figure 2 and Figure 3 As shown, in some embodiments, the automatic welding equipment 10 can be used to weld two pipes 30 together, with the ends of the two pipes 30 aligned and abutting to form a gap 20 to be welded; the travel track 11 is wound around the outer wall of the pipe 30 in a ring.

[0097] Understandably, after the ends of the two pipes 30 are aligned and abutted, the edges of each end of the two pipes 30 have bevels. When the bevels of the two pipes abut, a gap 20 to be welded is formed. After welding this gap, the purpose of connecting the two pipes 30 and preventing leakage is achieved.

[0098] like Figure 2As shown, in some embodiments, the automatic welding equipment 10 further includes a control module (not shown), which includes a controller electrically connected to the lifting drive 31.

[0099] Understandably, the control module is used to control the operation of the corresponding components. The controller can be a control panel or a control element with remote control functionality.

[0100] The welding module and automatic welding equipment of the present invention have at least the following beneficial effects:

[0101] The welding module and automatic welding equipment of the present invention relate to the field of welding technology. In the welding module, the gas protection device sprays protective gas in parallel along a first direction and sets the bent tungsten electrode in a manner parallel to the first direction, so that the gas sprayed in parallel along the first direction can provide gas protection for the bent tungsten electrode and also provide gas protection for the gap to be welded and the molten pool.

[0102] Thus, there is no need to set up a flat gun shell to guide the protective gas to protect the bent tungsten electrode, so that the depth of the bent tungsten electrode in the gap to be welded only needs to take into account the size and specifications of the bent tungsten electrode itself, which improves the adaptability of the product to the narrow gap to be welded; furthermore, the single-channel parallel delivery of protective gas also greatly simplifies the structure of the product; secondly, without the obstruction of the flat gun shell, the ease of observation is improved.

[0103] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They do not limit the scope of protection of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should fall within the scope of the claims of the present invention.

Claims

1. A welding module for welding gaps to be welded, characterized in that, The device includes a base, a gas protection device that sprays protective gas in parallel along a first direction to form a protective gas-enclosed space, a bent tungsten electrode disposed in the protective gas-enclosed space, a swinging device for driving the bent tungsten electrode to swing, and a wire feeding device. The gas protection device is disposed on the base, the bent tungsten electrode is used to form a molten pool at a predetermined position in the gap to be welded, the wire feeding device is used to transport the welding wire into the molten pool, and the protective gas sprayed along the first direction will provide gas protection for the bent tungsten electrode, the gap to be welded and the molten pool. The gas protection device includes a gas hood disposed on the base, a gas screen disposed inside the gas hood, and a vent disposed on the gas hood; The bent tungsten electrode passes through the gas hood and the gas screen, and the end of the bent tungsten electrode extends out of the gas hood. The vent is used to input protective gas into the gas hood, and the gas screen is used to uniformly sieve the protective gas so that the protective gas is uniformly sprayed out of the gas hood along the first direction. The central axis of the bent tungsten electrode coincides with the central axis of the gas sieve, and the central axis of the gas sieve is parallel to the first direction; The air screen has a plurality of screen holes, and each screen hole is symmetrically distributed about the center of the air screen. The swing device includes a swing drive component disposed on the base, a rotating disk connected to the swing drive component, a bushing connected to the rotating disk, a connecting rod with a waist hole, and a sliding limit component disposed on the rotating disk. The bent tungsten electrode passes through the bushing, the connecting rod is connected to the bushing, and the sliding limit member passes through the waist hole. When the sliding limit member is driven by the rotating disk to rotate, it will slide in the waist hole to drive the connecting rod to swing back and forth, thereby causing the bushing to drive the bent tungsten electrode to swing back and forth. The swing angle of the bent tungsten electrode is less than 120°.

2. The welding module according to claim 1, characterized in that, The gas protection device further includes a support plate disposed inside the gas hood, a sealing ring disposed between the support plate and the inner wall of the gas hood, and an outlet rod passing through the support plate. The support plate is used to support the rotation of the bent tungsten electrode, and the sealing ring is used to seal the fitting gap between the support plate and the gas shroud; The gas outlet rod is used to guide the introduced protective gas through the support plate and the gas screen.

3. The welding module according to claim 1, characterized in that, The air hood includes a transparent cover.

4. The welding module according to claim 1, characterized in that, The bent tungsten electrode includes a straight section and a bent section connected to each other. The length extension direction of the straight section is parallel to the first direction, and the bent section is bent toward the welding direction. The angle between the bent section and the straight section is an obtuse angle.

5. The welding module according to claim 1, characterized in that, The welding module also includes a tungsten electrode cap, which is used to fix the relative position of the bent tungsten electrode and the base.

6. The welding module according to claim 1, characterized in that, The welding module also includes a cooling device, which includes an inlet pipe, an outlet pipe, and a cooling block. The inlet pipe and the outlet pipe are respectively disposed on the base. The bent tungsten electrode passes through the cooling block. The inlet pipe is used to guide the cooling liquid to the cooling block. After cooling the cooling block, the cooling liquid is discharged through the outlet pipe. The cooling block is used to cool the bent tungsten electrode.

7. The welding module according to claim 1, characterized in that, The welding module further includes a conductive device, which includes a conductive cable disposed on the base and a conductive block connected to the conductive cable; The conductive block is used to draw the current from the conductive cable and further transmit it to the bent tungsten electrode.

8. An automatic welding device, characterized in that, The system includes a walking module and a welding module as described in any one of claims 1 to 7, wherein the base is disposed on the walking module and the walking module is used to drive the welding module to walk along the gap to be welded.

9. The automatic welding equipment according to claim 8, characterized in that, The walking module includes a walking track and a walking frame. The walking track is arranged side by side with the gap to be welded, and the walking frame is slidably mounted on the walking track. The base is mounted on the walking frame.

10. The automatic welding equipment according to claim 9, characterized in that, The automatic welding equipment also includes a lifting module, which includes a lifting drive component mounted on the walking frame and a lifting guide rail mounted on the walking frame. The base is slidably disposed on the lifting guide rail, and the lifting drive is drivenly connected to the base. The lifting drive is used to drive the base to slide along the lifting guide rail so that the bent tungsten electrode moves in the direction of penetrating or exiting the gap to be welded.

11. The automatic welding equipment according to claim 9, characterized in that, The automatic welding equipment is used to weld two pipes together, with the ends of the two pipes aligned and abutting to form the gap to be welded; the traveling track is wound in a ring around the outer wall of the pipe.

12. The automatic welding equipment according to claim 10, characterized in that, The automatic welding equipment also includes a control module, which includes a controller that is electrically connected to the lifting drive component.

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