Welding pressure head and welding pressing module

Abstract

The utility model discloses a welding pressure head and a welding pressing module, and the welding pressure head comprises a pressure head body which is provided with a central axis; the first gas supply channel is arranged in the pressure head body and provided with a first gas outlet, and the first gas supply channel is used for guiding the protective gas to the welding working face in the direction inclined to the central axis; the second gas supply channel is arranged in the pressure head body and is provided with a second gas outlet, and the second gas supply channel is used for guiding the protective gas to the welding working surface; and the rotational flow generator is arranged in the second gas supply channel and is used for enabling the protective gas discharged from the second gas outlet to form a rotational jet flow. When the first gas supply channel conveys protective gas to the working face at an inclined angle, the rotational flow generator in the second gas supply channel generates rotational jet flow, and due to the fact that the position of the second gas outlet is closer to the central axis and the included angle between the gas outlet direction and the central axis is smaller, a controlled low-intensity backflow area is formed. And a high-strength backflow region formed by the first channel is effectively inhibited.

Description

A welding pressure head and welding clamping module Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a welding pressure head and a welding clamping module. Background Technology

[0002] In welding processes, to ensure welding quality, a stable inert gas protective environment is typically required in the welding area. Traditional welding head structures usually employ a side-connected gas pipe or a built-in gas channel design. These gas channels are generally inclined, extending at an angle to the central axis of the welding head, creating an angle between the gas and the welding surface.

[0003] However, this design creates a high-intensity reflow zone dominated by the high-speed airflow when it impacts the work surface at an angle. The drastic fluctuations in gas pressure and velocity within this reflow zone can easily lead to instability in the weld melt, thus affecting the welding quality and outcome. Summary of the Invention

[0004] The main purpose of this utility model is to provide a welding pressure head and a welding clamping module to solve the above-mentioned technical problems.

[0005] The objective of this utility model can be achieved by adopting the following technical solution:

[0006] A welding pressure head, comprising:

[0007] The pressure head body has a central axis;

[0008] A first gas supply channel is provided in the body of the pressure head and has a first gas outlet. The first gas supply channel is used to guide the protective gas to the welding working surface in a direction inclined to the central axis.

[0009] The second gas supply channel is disposed in the body of the pressure head and has a second gas outlet. The second gas supply channel is used to guide the protective gas to the welding working surface.

[0010] A vortex generator is disposed in the second gas supply channel to form a rotating jet of the protective gas discharged from the second gas outlet;

[0011] Wherein, the angle between the extension direction of the second air supply channel near the second air outlet and the central axis is smaller than the angle between the extension direction of the first air supply channel near the first air outlet and the central axis.

[0012] Furthermore, the radial distance between the second air outlet and the central axis is less than the radial distance between the first air outlet and the central axis.

[0013] The pressure head body has a central channel that runs through the central axis; the second air outlet and the first air outlet are arranged vertically along the central axis.

[0014] The second air supply channel extends in a direction parallel to the central axis near the second air outlet.

[0015] Both the first and second air supply channels are annular channels, and the annular channels are coaxially arranged around the central axis.

[0016] The first air supply channel includes a first air inlet and a first transition section distributed sequentially along its length. The first air outlet is located at the end of the first transition section. The cross-sectional area of ​​the first air inlet gradually decreases along the direction of protective gas flow.

[0017] The second air supply channel includes a second air inlet and a second transition section distributed sequentially along its length. The vortex generator is located in the second transition section, and the second air outlet is located at the end of the second transition section. The cross-section of the second transition section gradually increases along the direction of protective gas flow.

[0018] The swirl generator includes an impeller or a helical flow channel.

[0019] The pressure head body is also provided with an air intake channel, which has an air intake port near the central axis and an exhaust port for connecting an external dust collection component. The exhaust port and the second air outlet are arranged vertically along the central axis.

[0020] A welding clamping module includes: a driving component, one end of which is provided with a pressure head mounting plate, the pressure head mounting plate being provided with a welding pressure head as described above; the pressure head mounting plate having a through hole along its thickness direction, the through hole communicating with the central channel of the welding pressure head along its central axis.

[0021] The suction channel of the welding head is connected to a dust collection component, and the dust collection component is connected to the exhaust port of the suction channel.

[0022] The beneficial technical effects of this utility model are as follows:

[0023] This welding head solves the problem of melt instability caused by high-speed gas flow in traditional welding by setting up two gas supply channels with different angles and positions, as well as a vortex generator. When the first gas supply channel delivers shielding gas to the working face at an inclined angle, the vortex generator in the second gas supply channel generates a rotating jet. Because the second gas outlet is closer to the central axis and the angle between the gas outlet direction and the central axis is smaller, a controlled low-intensity backflow zone is formed, effectively suppressing the high-intensity backflow zone formed by the first channel. This dual-channel collaborative design reduces drastic fluctuations in gas pressure and velocity in the welding area, stabilizes the weld melt, and thus improves welding quality and effect. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 is a schematic diagram of the axial cross-section of the welding pressure head provided in an embodiment of this utility model;

[0026] Figure 2 is a structural schematic diagram of the welding clamping module provided in an embodiment of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] In the diagram: 100-Welding clamping module, 101-Drive assembly, 102-Pressure head mounting plate, 1021-Through hole, 103-Pressure head body, 104-Dust suction assembly, 1030-Central channel, 1031-First air supply channel, 1032-Second air supply channel, 1033-Swirl generator, 1034-Suction channel, 1035-First air outlet, 1036-Second air outlet, 1037-Central axis, 1051-First air inlet end, 1052-First transition section, 1053-Second air inlet end, 1054-Second transition section, 1055-Suction port, 1056-Exhaust port. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0031] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0032] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0033] Please refer to Figure 1, which is a schematic axial cross-sectional view of the welding head provided in this embodiment of the present invention. The welding head provided in this embodiment of the present invention includes a head body 103 having a central axis 1037; a first gas supply channel 1031 disposed within the head body 103 and having a first gas outlet 1035, the first gas supply channel 1031 being used to guide protective gas to the welding working surface in a direction inclined to the central axis 1037; a second gas supply channel 1032 disposed within the head body 103 and having a second gas outlet 1036, the second gas supply channel 1032 being used to guide protective gas to the welding working surface; and a vortex generator 1033. The protective gas discharged from the second outlet 1036 is disposed within the second air supply channel 1032 to form a rotating jet; wherein, the angle between the extension direction of the portion of the second air supply channel 1032 near the second outlet 1036 and the central axis 1037 is smaller than the angle between the extension direction of the portion of the first air supply channel 1031 near the first outlet 1035 and the central axis 1037; and the radial distance between the second outlet 1036 and the central axis 1037 is smaller than the radial distance between the first outlet 1035 and the central axis 1037.

[0034] In this embodiment, the first gas supply channel 1031 is used to guide a protective gas (e.g., nitrogen) to the welding surface at an angle inclined to the central axis 1037. As shown in FIG1, the first gas supply channel 1031 includes a channel portion extending downward at an angle, with its outlet end (i.e., the first outlet) facing the welding surface. Its inlet end can be connected to an external protective gas output device (not shown).

[0035] The second gas supply channel 1032 is used to guide the shielding gas to the welding working surface. As shown in Figure 1, the second gas supply channel 1032 includes a channel portion extending vertically downwards, and its outlet end (i.e., the second outlet) also faces the welding working surface. Its inlet end is also connected to an external shielding gas output device (not shown).

[0036] The vortex generator 1033 is located in the second gas supply channel 1032 near its second gas outlet 1036, specifically before the second gas outlet 1036. The function of the vortex generator 1033 is to form a rotating jet of protective gas discharged from the second gas outlet 1036. This rotating jet will generate a low-intensity backflow zone on the welding surface.

[0037] The angle between the extension direction of the second air supply channel 1032 near the second air outlet 1036 and the central axis 1037 is smaller than the angle between the extension direction of the first air supply channel 1031 near the first air outlet 1035 and the central axis 1037.

[0038] In the example shown in Figure 1, the portion of the first air supply channel 1031 near its first air outlet 1035 is inclined (with an angle greater than zero with the central axis 1037), and the portion of the second air supply channel 1032 near its second air outlet 1036 is vertical (with an angle of zero degrees with the central axis 1037), satisfying the condition of a smaller angle.

[0039] Furthermore, the radial distance of the second air outlet 1036 from the central axis 1037 is less than the radial distance of the first air outlet 1035 from the central axis 1037. As shown in Figure 1, the second air outlet 1036 of the second air supply channel 1032 is located inside the first air outlet 1035 of the first air supply channel 1031, that is, closer to the central axis 1037, thus satisfying the condition of a smaller radial distance.

[0040] This design aims to address the problems mentioned in the background section. Traditional inclined airflow methods (similar to the first air supply channel 1031 in this embodiment) create a high-intensity backflow zone on the working surface, leading to instability in the weld pool. This embodiment adds a second air supply channel 1032 and incorporates a vortex generator 1033 within it, generating a rotating jet. Because the second outlet 1036 is located further inward (smaller radial distance) and its jet direction is closer to vertical (smaller angle, even zero), the resulting rotating jet can create a controlled, low-intensity backflow zone in the central region of the welding working surface. This low-intensity backflow zone effectively suppresses or buffers the high-intensity backflow zone formed by the inclined high-speed airflow of the first air supply channel 1031, reducing its severe disturbance to the weld pool. This dual-channel design combined with the vortex generator 1033 makes the airflow in the welding area more stable, reducing drastic fluctuations in gas pressure and velocity, thereby improving the stability of the weld pool and enhancing welding quality and results.

[0041] In this embodiment, the welding working surface refers to the workpiece surface area irradiated by the laser beam and subjected to welding operations during laser welding. Specifically, the welding working surface refers to the surface of the workpiece to be welded (such as a busbar or other components to be welded), which is located below the welding head. It is the area directly affected by the protective gas of the first gas supply channel 1031 and the second gas supply channel 1032, and is also the area irradiated by the laser beam and forms the weld pool.

[0042] In one embodiment, the pressure head body 103 has a central channel 1030 extending along the central axis 1037; the second air outlet 1036 and the first air outlet 1035 are arranged vertically along the central axis 1037.

[0043] In this embodiment, as shown in FIG1, the central channel 1030 is located at the center of the pressure head body 103 and runs through the entire pressure head body 103 in a vertical direction (i.e., the direction of the central axis 1037). The function of this central channel 1030 is to allow processing tools (such as the laser beam in laser welding) to pass through the pressure head body 103 and irradiate the welding working surface below for welding operations.

[0044] As shown in Figure 1, the second air outlet 1036 is located above the first air outlet 1035. This vertical arrangement, combined with the aforementioned radial inward and outward arrangement (the second air outlet is on the inside, and the first air outlet 1035 is on the outside), helps to form a structured airflow field, allowing the rotating jet ejected from the upper inner side to better act on the recirculation zone formed by the inclined jet from the lower outer side.

[0045] In one embodiment, the portion of the second air supply channel 1032 near the second air outlet 1036 extends parallel to the central axis 1037.

[0046] In this embodiment, as shown in Figure 1, the portion of the second air supply channel 1032 near its second air outlet 1036 extends vertically downwards, meaning its extension direction is parallel to the central axis 1037 with an included angle of zero degrees. This vertically downward jetting method allows the rotating jet generated by the vortex generator 1033 to impact the welding surface vertically. Compared to inclined jetting, the low-intensity backflow zone formed by this vertically jetting rotating jet is more stable and controllable, and can more effectively suppress the high-intensity backflow zone formed by the inclined jetting of the first air supply channel 1031, thereby achieving a more stable welding process and higher welding quality.

[0047] In one embodiment, both the first gas supply channel 1031 and the second gas supply channel 1032 are annular channels, and the annular channels are coaxially arranged around the central axis 1037.

[0048] In this embodiment, as shown in FIG1, the first air supply channel 1031 forms a ring structure within the pressure head body 103. Similarly, the second air supply channel 1032 also forms a ring structure within the pressure head body 103. Both channels are arranged with the central axis 1037 of the pressure head body 103 as a common axis.

[0049] The annular and coaxial arrangement allows the protective gas discharged from the first gas supply channel 1031 and the second gas supply channel 1032 to form a uniformly distributed airflow protective layer around the central area of ​​the welding surface, which helps to achieve comprehensive and symmetrical protection of the entire welding area and further improves the stability of the airflow organization and the protection effect.

[0050] In one embodiment, the first air supply channel 1031 includes a first air inlet 1051 and a first transition section 1052 distributed sequentially along its length, and a first air outlet 1035 is disposed at the end of the first transition section 1052. The cross-sectional area of ​​the first air inlet 1051 gradually decreases along the direction of protective gas flow.

[0051] In this embodiment, along the length of the first gas supply channel 1031, that is, along the direction of the protective gas flow inside it. The first gas inlet 1051 of the first gas supply channel 1031 is located upstream of the channel, and the first transition section 1052 is located downstream of the channel. The first gas outlet 1035 is the opening of the first gas supply channel 1031 shown in FIG1 facing the welding working surface.

[0052] The cross-sectional area of ​​the first air inlet 1051 gradually decreases along the direction of protective gas flow. In other words, the inlet portion of the first air supply channel 1031 adopts a gradually narrowing design. This narrowing structure allows the incoming protective gas to increase its velocity as it passes through this section, while also helping to stabilize the airflow and improve its directionality.

[0053] The first transition section 1052, which connects to the narrowed first inlet end 1051 and leads to the first outlet 1035, maintains a relatively constant cross-sectional shape and size, forming a stable flow channel until the gas is discharged from the first outlet 1035. The upstream narrowing inlet end accelerates and stabilizes the airflow, allowing the gas jet ejected from the first outlet 1035 to act more concentratedly and precisely on the welding surface, thereby improving the protection effect and the stability of the welding process.

[0054] In one embodiment, the second air supply channel 1032 includes a second air inlet 1053 and a second transition section 1054 arranged sequentially along its length. A vortex generator 1033 is disposed in the second transition section 1054, and a second air outlet 1036 is disposed at the end of the second transition section 1054. The cross-section of the second transition section 1054 gradually increases along the direction of protective gas flow.

[0055] In this embodiment, along the length of the second gas supply channel 1032, that is, along the direction of the protective gas flow inside it. The second inlet end 1053 of the second gas supply channel 1032 is located upstream of the channel, and the second transition section 1054 is located downstream of the channel. The second outlet 1036 is the opening of the second gas supply channel 1032 shown in FIG1 facing the welding working surface.

[0056] The cross-sectional area of ​​the second transition section 1054 gradually increases along the direction of shielding gas flow. In other words, after the vortex generator 1033, the cross-section of the second gas supply channel 1032 gradually expands. This expansion design helps to appropriately reduce the axial velocity of the shielding gas after it forms a rotating jet through the vortex generator 1033, making its flow more stable. Through deceleration and stabilization, the rotating jet discharged from the second outlet 1036 can act more gently on the welding surface, forming a more stable and controllable low-intensity backflow zone, thereby better suppressing the high-intensity backflow generated by the first gas supply channel 1031, and further improving the stability and protection effect of the welding process.

[0057] In one specific embodiment, the swirl generator 1033 is specifically disposed at the top of the second transition section 1054, that is, immediately after the second air inlet 1053. After the gas flows through the swirl generator 1033, it enters the second transition section 1054, where the cross-sectional area of ​​the channel gradually increases.

[0058] In one specific embodiment, the velocity of the rotating jet output by the vortex generator 1033 is no greater than 10% of the velocity of the gas jet output by the first gas supply channel 1031.

[0059] By limiting the velocity of the rotating jet to a low level, it is ensured that the pressure and velocity fluctuations in the low-intensity reflow zone formed by the rotating jet are much smaller than those in the high-intensity reflow zone formed directly by the gas jet. This allows the low-intensity reflow zone to effectively suppress the drastic fluctuations of the high-intensity reflow zone. Simultaneously, due to its lower intensity, the low-intensity reflow zone does not significantly interfere with the gas jet itself (e.g., its atomization effect). This ensures both the primary protective function of the gas jet and the stabilizing effect of the rotating jet, thereby improving the overall stability and quality of the welding process.

[0060] In one specific embodiment, the flow rate of the rotating jet output by the vortex generator 1033 is no greater than 5% of the flow rate of the gas jet output by the first gas supply channel 1031. By maintaining the flow rate of the rotating jet at a low level, it is possible to minimize its impact on the overall airflow field and protection range of the gas jet output by the first gas supply channel 1031 while ensuring that the rotating jet can form an effective low-intensity backflow zone.

[0061] In the above embodiments, the control of the velocity and flow rate of the rotating jet can be achieved by a flow control device (not shown in the figure) on the air supply pipeline connected to the second air inlet 1053.

[0062] In one embodiment, the swirl generator 1033 includes an impeller or a helical flow channel.

[0063] In this embodiment, when the swirl generator 1033 adopts an impeller structure, the impeller is fixed inside the second air supply channel 1032. The impeller has multiple blades. When the protective gas flows through the impeller, the blades exert a force on the gas, causing it to generate a tangential velocity component, thereby forming a rotating jet after leaving the impeller.

[0064] In other embodiments, when the vortex generator 1033 adopts a spiral flow channel structure, the second gas supply channel 1032 is provided with a spirally extending flow channel structure inside. This can be achieved by machining spiral grooves on the inner wall of the channel or by providing spiral-shaped guides inside the channel. When the protective gas flows along the spiral flow channel, its trajectory is forced into a spiral shape, thereby naturally forming a rotational motion.

[0065] Whether using an impeller or a spiral flow channel, the purpose of the swirling generator 1033 is to make the protective gas discharged from the second outlet 1036 form a jet with a specific rotation intensity, so as to generate a controlled low-intensity backflow zone on the welding working surface, thereby suppressing high-intensity backflow and stabilizing the welding process.

[0066] In one embodiment, the pressure head body 103 is further provided with an air intake channel 1034. The air intake channel 1034 has an air intake port 1055 adjacent to the central axis 1037 and an exhaust port 1056 for connecting to the external dust collection assembly 104. The exhaust port 1056 and the second air outlet 1036 are arranged vertically along the direction of the central axis 1037.

[0067] In this embodiment, the suction channel 1034 is used to extract fumes and dust generated during the welding process. The suction channel 1034 has a suction port 1055 (i.e., the inner opening of the suction channel 1034 in FIG. 1) adjacent to the central axis 1037 and an exhaust port 1056 (i.e., the outer opening of the suction channel 1034 in FIG. 1) for connecting to the external dust collection assembly 104. The suction port 1055 is designed to be located close to the central axis 1037 to capture fumes and dust rising from the center of the welding area.

[0068] Referring to Figure 1, the suction channel 1034 is located entirely above the second air supply channel 1032. Specifically, the suction port 1055 (inner opening) of the suction channel 1034 is located above the second air outlet 1036 of the second air supply channel 1032. This arrangement allows the suction channel 1034 above to effectively draw away the fumes generated during welding while the protective gas is ejected from below (the first and second air outlets), preventing fumes from polluting the working environment or interfering with the welding process, thus integrating the functions of protective gas delivery and fume extraction.

[0069] In this embodiment, as shown in Figure 1, the suction channel 1034 can be designed as a channel perpendicular to the central axis 1037. This structure is simple and facilitates smooth airflow. Furthermore, to avoid adverse effects on the protective gas environment during the suction process, the airflow velocity of the suction channel 1034 is designed to be lower than the airflow velocity of the second air supply channel 1032. By controlling the suction velocity to be relatively low, it can be ensured that while effectively removing fumes, the stable protective gas atmosphere formed by the first air supply channel 1031 and the second air supply channel 1032 is not excessively disturbed or disrupted, thereby guaranteeing welding quality.

[0070] Please refer to Figure 2, which is a structural schematic diagram of the welding clamping module 100 provided in this embodiment of the present invention. Corresponding to the above-mentioned welding clamping head, this embodiment of the present invention also provides a welding clamping module 100.

[0071] The welding clamping module 100 includes a drive assembly 101 and a clamping head mounting plate 102 disposed at one end of the drive assembly 101. The clamping head mounting plate 102 is provided with a welding clamping head of any of the aforementioned embodiments.

[0072] In this embodiment, the drive assembly 101 has an output end connected to the pressure head mounting plate 102. The drive assembly 101 generates a driving force to move the pressure head mounting plate 102 in a preset direction (e.g., direction D1 in Figure 2, which is the vertical direction). The drive assembly 101 can be a cylinder, a motor screw mechanism, or other device capable of providing linear motion.

[0073] The pressure head mounting plate 102 is used to support and fix the welding pressure head. The welding pressure head is detachably mounted on the pressure head mounting plate 102, for example, by bolts or other fasteners. This allows for easy replacement of welding pressure heads of different specifications or types according to different welding requirements.

[0074] During operation, the drive assembly 101 drives the pressure head mounting plate 102 to move downward, so that the bottom end of the welding pressure head mounted on it can press against the workpiece to be welded, providing a stable working environment for subsequent welding operations.

[0075] In one embodiment, the pressure head mounting plate 102 has a through hole 1021 extending along the thickness direction, and the through hole 1021 is connected to the central channel 1030 of the welding pressure head along the central axis 1037.

[0076] In this embodiment, when the welding head with the central channel 1030 is mounted on the head mounting plate 102, the through hole 1021 on the head mounting plate 102 communicates with the central channel 1030 of the welding head along the central axis 1037. In other words, the through hole 1021 on the head mounting plate 102 and the central channel 1030 of the welding head are coaxially aligned, together forming a continuous channel extending from above the head mounting plate 102 to below the welding head.

[0077] This structural design allows processing tools (such as laser beams emitted by laser welding equipment) to pass through the through-hole 1021 on the pressure head mounting plate 102, then through the central channel 1030 of the welding pressure head, and finally reach and act on the welding working surface of the workpiece pressed under the welding pressure head. This ensures that welding energy or processing tools can reach the target area without obstruction.

[0078] In one embodiment, the suction channel 1034 of the welding head is connected to a dust suction assembly 104, and the dust suction assembly 104 is connected to the exhaust port of the suction channel 1034.

[0079] In this embodiment, as shown in Figure 2, the exhaust port of the suction channel 1034 is connected to the pipeline of the dust collection component 104. The dust collection component 104 can generate negative pressure to remove the welding fumes and powder sucked in through the suction port of the suction channel 1034 and perform filtration. In this way, the entire welding clamping module 100 can not only clamp the workpiece and provide protective gas, but also effectively remove fumes at the same time, ensuring welding quality and a clean working environment.

[0080] In this embodiment, the dust collection assembly 104 includes components such as a fan, pipes, and a filter (not shown in the figures), which is responsible for generating negative pressure and filtering the dust that is sucked out.

[0081] In one specific embodiment, the outer side of the welding indenter has at least one flat side surface. As shown in FIG2, the welding indenter can be designed to have one or more flat side regions. The exhaust port of the suction channel 1034 extends to the flat side surface. In other words, the external opening of the suction channel 1034 on the indenter body 103 is located on this flat side surface.

[0082] This design allows the tubing of the vacuum assembly 104 to be directly and stably mounted on this flat side surface, for example, via flanges, bolts, or other sealing connections. The flat contact surface helps ensure the strength and airtightness of the connection, ensuring vacuuming efficiency. In the example with multiple rows of welded pressure heads shown in Figure 2, the tubing of the vacuum assembly 104 can be connected to the flat surfaces on the outer sides of the welded pressure head arrays on the left and right sides, respectively.

[0083] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A welding pressure head, characterized in that, include: The pressure head body has a central axis; a first air supply channel is disposed within the pressure head body and has a first air outlet, the first air supply channel being used to guide protective gas to the welding working surface in a direction inclined to the central axis; a second air supply channel is disposed within the pressure head body and has a second air outlet, the second air supply channel being used to guide the protective gas to the welding working surface; a vortex generator is disposed within the second air supply channel, used to form a rotating jet of the protective gas discharged from the second air outlet; wherein, the angle between the extension direction of the portion of the second air supply channel near the second air outlet and the central axis is smaller than the angle between the extension direction of the portion of the first air supply channel near the first air outlet and the central axis; and, the radial distance of the second air outlet from the central axis is smaller than the radial distance of the first air outlet from the central axis.

2. The welding pressure head according to claim 1, characterized in that, The pressure head body has a central channel that runs through the central axis; the second air outlet and the first air outlet are arranged vertically along the central axis.

3. The welding pressure head according to claim 1, characterized in that, The portion of the second air supply channel near the second air outlet extends parallel to the central axis.

4. The welding pressure head according to claim 1, characterized in that, Both the first and second air supply channels are annular channels, and the annular channels are coaxially arranged around the central axis.

5. The welding pressure head according to claim 1, characterized in that, The first air supply channel includes a first air inlet and a first transition section distributed sequentially along its length. The first air outlet is located at the end of the first transition section. The cross-sectional area of ​​the first air inlet gradually decreases along the direction of protective gas flow.

6. The welding pressure head according to claim 1, characterized in that, The second air supply channel includes a second air inlet and a second transition section distributed sequentially along its length. The vortex generator is located in the second transition section, and the second air outlet is located at the end of the second transition section. The cross-section of the second transition section gradually increases along the direction of protective gas flow.

7. The welding pressure head according to claim 1, characterized in that, The swirl generator includes an impeller or a spiral flow channel.

8. The welding pressure head according to claim 1, characterized in that, The pressure head body is also provided with an air intake channel, which has an air intake port near the central axis and an exhaust port for connecting an external dust collection component. The exhaust port and the second air outlet are arranged vertically along the central axis.

9. A welding clamping module, characterized in that, include: A driving assembly, one end of which is provided with a pressure head mounting plate, the pressure head mounting plate being provided with a welding pressure head as described in any one of claims 1 to 8; the pressure head mounting plate having a through hole extending along the thickness direction, the through hole communicating with the central channel of the welding pressure head along the central axis.

10. The welding clamping module according to claim 9, characterized in that, The suction channel of the welding head is connected to a dust collection component, and the dust collection component is connected to the exhaust port of the suction channel.

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