A high-frequency welding machine profiling electrode module for complex curved surface welding

Abstract

The utility model discloses a high -frequency fusion machine profiling electrode module for complex curved surface welding, include: high -frequency fusion machine, the lower surface fixed mounting of high -frequency fusion machine has the U -shaped frame, the upper surface fixed mounting of U -shaped frame in has linear module, the movable block upper surface fixed mounting of linear module has the placement board, and the placement board is driven with the vertical opposite of profiling fusion mechanism by linear module's longitudinal, and the profiling fusion mechanism fixed mounting is in the U -shaped frame, and the U -shaped frame fixed mounting is in the high -frequency fusion machine in the lower surface of pressure -exerting mechanism. The design of this application through profiling fusion mechanism makes it through " air pressure drive + flexible adaptation " function realizes the self -adaptation of different curved surface and sticks to, need not according to the workpiece shape individually custom -made template, greatly reduced the mould design and manufacturing cost, has saved the time of template replacement simultaneously, has shortened the preparation period of multi -variety, small -batch production, has promoted the versatility and flexible production capacity of equipment.

Description

Technical Field

[0001] This utility model relates to the field of high-frequency welding machine technology, specifically a high-frequency welding machine contour electrode module for welding complex curved surfaces. Background Technology

[0002] Welding, as an important processing technology, is widely used in many fields such as machinery manufacturing, electronics, and aerospace. However, welding complex curved surfaces has always been a technical challenge. With the development of modern industry, product design is increasingly trending towards lightweight, miniaturization, and complexity, leading to the widespread application of complex curved surfaces in production. For example, in aero-engine manufacturing, key components such as turbine blades have complex curved shapes, and their welding quality directly affects the engine's performance and reliability. In electronic equipment manufacturing, the welding of some precision components also requires high-precision complex curved surface welding technology to ensure product quality and performance. Traditional welding methods have many limitations when dealing with complex curved surface welding. For instance, manual welding relies on the welder's experience and skills, resulting in inconsistent welding quality, difficulty in guaranteeing the precision and consistency of complex curved surface welding, and low efficiency, failing to meet the needs of large-scale production. Automated welding equipment, such as traditional linear or simple trajectory welding equipment, has fixed electrode or welding torch movement patterns and shapes, making it difficult to adapt to changes in complex curved surfaces and unable to achieve omnidirectional, high-precision welding of complex curved surfaces. This not only leads to an increase in welding defects, such as incomplete welds, missed welds, and uneven welds, but also results in material waste and increased production costs.

[0003] Currently, although there are some improved technologies for welding complex curved surfaces on the market, they still have shortcomings. Some technologies use contour templates to guide welding, but the templates are expensive to manufacture, have long production cycles, and lack flexibility. Once the shape of the workpiece changes, the template needs to be remade. At the same time, during the welding process, it is difficult to precisely control the fit between the electrode and the complex curved surface, which can easily lead to poor contact between the electrode and the workpiece or excessive local pressure, affecting the welding quality. Therefore, a contour electrode module for high-frequency welding machines for welding complex curved surfaces is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a high-frequency welding machine contour electrode module for welding complex curved surfaces, in order to solve the problems mentioned in the background art, such as high cost, long cycle, poor flexibility of contour template manufacturing, difficulty in accurately controlling the fit between the electrode and the complex curved surface, which easily leads to poor contact or excessive local pressure, thus affecting the welding quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-frequency welding machine contour electrode module for welding complex curved surfaces includes: a high-frequency welding machine, a U-shaped frame fixedly mounted on the lower surface of the high-frequency welding machine, a linear module fixedly mounted on the upper surface of the U-shaped frame, a placement plate fixedly mounted on the upper surface of the moving block of the linear module, the placement plate being driven longitudinally by the linear module to be perpendicular to the contour welding mechanism, the contour welding mechanism being fixedly mounted inside the U-shaped frame, and the U-shaped frame being fixedly mounted on the lower surface of the pressure application mechanism in the high-frequency welding machine.

[0007] Preferably, the contour welding mechanism includes multiple sets of equidistantly arranged piston columns, and the multiple sets of piston columns are all slidably installed in a sealed manner in the air pressure chamber. The air pressure chamber is opened in the lower surface of the U-shaped frame. A connecting arm is fixedly installed on the lower surface of the piston column, and the connecting arm extends from the lower surface of the air pressure chamber. A high-elasticity alloy sheet is fixedly installed on the lower surface of the connecting arm in a hollow shape, and an electrode unit is bonded to the lower surface of the high-elasticity alloy sheet with conductive adhesive.

[0008] Preferably, the high-elasticity alloy sheet has a downward micro-arc protrusion, so that the electrode unit bonded to the lower surface also has a micro-arc protrusion, which facilitates bonding with complex curved workpieces and forms a composite structure of "flexible substrate + functional unit".

[0009] Preferably, the electrode unit is electrically connected to the wires inserted in the connecting arm via copper contacts. The wires extend sequentially from the connecting arm, piston column, and air pressure chamber and are connected to the power connection port. The power connection port is fixedly installed at one end of the U-shaped frame and can be electrically connected to the high-frequency power supply of the high-frequency welding machine to form a complete high-frequency current transmission path.

[0010] Preferably, the conductor is a flexible cable braided from multiple strands of fine copper wire, wrapped with a high-temperature resistant insulating sleeve, and is provided with sealing rings at the points through which it passes through the internal channels of the connecting arm and piston column and the through hole of the air pressure chamber to ensure the air pressure chamber is sealed.

[0011] Preferably, a pressure gauge and an air nozzle are fixedly installed at one end of the U-shaped frame. Both the pressure gauge and the air nozzle are connected to the air pressure chamber. The air nozzle is used to connect to an external air source to provide air pressure power to the air pressure chamber.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. Through the sealed fit between the piston rod and the air pressure chamber, stable pressure can be transmitted to the connecting arm. Combined with the micro-arc protrusion design of the high-elasticity alloy sheet, the electrode unit can adaptively deform with the curved surface when in contact with the workpiece, ensuring uniform pressure at each contact point. This "rigid drive + flexible compensation" structure avoids the problems of poor welding and missing welding caused by poor fit of traditional electrodes. At the same time, the flexible wire braided with multiple strands of fine copper wire ensures stable conduction of high-frequency current. Combined with the close contact between the electrode unit and the workpiece, current loss and local overheating are reduced, which greatly improves the consistency of welding strength. It is especially suitable for high-precision welding of thin-walled and irregularly shaped curved workpieces.

[0014] 2. By adjusting the extension and retraction of the piston column and utilizing the deformation capability of the high-elasticity alloy sheet, it can adapt to complex curved surfaces with different curvatures, eliminating the need for frequent parts replacement, thus reducing mold costs and changeover time. The high-temperature resistant insulating sleeve and sealing ring design of the wires ensure the sealing of the air pressure chamber and extend the service life of the wires, reducing maintenance frequency. In addition, the precise feeding of the linear module and the automated linkage of the pressure application mechanism simplify the operation process, allowing even non-professionals to quickly get started, significantly improving the adaptability to small-batch, multi-variety production. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the placement plate and the U-shaped frame of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the high-elasticity alloy sheet and electrode unit of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the pressure gauge and air nozzle of this utility model.

[0019] In the diagram: 1. High-frequency welding machine; 101. U-shaped frame; 102. Linear module; 103. Placement plate; 104. U-shaped frame; 105. Air pressure chamber; 2. Contour welding mechanism; 201. Piston column; 202. Connecting arm; 203. High-elasticity alloy sheet; 204. Electrode unit; 205. Wire; 206. Electrical connection port; 207. Air nozzle; 208. Air pressure gauge. Detailed Implementation

[0020] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4 This embodiment provides the following technical solution:

[0022] like Figures 1-2 As shown, a high-frequency welding machine contour electrode module for welding complex curved surfaces includes: a high-frequency welding machine 1, a U-shaped frame 101 fixedly installed on the lower surface of the high-frequency welding machine 1, a linear module 102 fixedly installed on the upper surface inside the U-shaped frame 101, a placement plate 103 fixedly installed on the upper surface of the moving block of the linear module 102, the placement plate 103 being driven longitudinally by the linear module 102 to be perpendicular to the contour welding mechanism 2, and the contour welding mechanism 2 being fixedly installed inside the U-shaped frame 104, and the U-shaped frame 104 being fixedly installed on the lower surface of the pressure mechanism in the high-frequency welding machine 1.

[0023] Through the design of the high-frequency welding machine 1, the U-shaped frame 104, the air pressure chamber 105, and the contour welding mechanism 2, during use, the high-frequency power supply of the high-frequency welding machine 1 can be electrically connected to the contour welding mechanism 2 through the wire 205. The complex curved workpiece to be welded is placed on the placement plate 103, and the linear module 102 can longitudinally drive the placement plate 103 to accurately move the workpiece directly under the contour welding mechanism 2 for alignment. Subsequently, the pressure application mechanism of the high-frequency welding machine 1 drives the contour welding mechanism 2 to move downward through the U-shaped frame 104 until it touches the surface of the workpiece. With continuous pressure, the contour welding mechanism 2 at the corresponding position can be directed towards the air pressure chamber. The pressure chamber 105 retracts internally, allowing it to adaptively conform to the complex curved surface of the workpiece, ensuring close contact and uniform pressure. The compressed air within the pressure chamber 105 then applies a corresponding contact force to the workpiece surface via the conformal welding mechanism 2. Subsequently, the high-frequency welding machine 1 is activated, starting the high-frequency power supply and outputting high-frequency current. This current is transmitted via wires to the conformal welding mechanism 2, forming a closed loop in the contact area between the mechanism and the workpiece. Utilizing the Joule heating effect generated at the contact point by the high-frequency current, the area of ​​the workpiece to be welded rapidly heats to a molten state, achieving localized welding. During this process, the pressure chamber 105... The compressed air continuously applies a stable top contact force to the workpiece through the contour welding mechanism 2, ensuring close contact between the electrode and the workpiece to guarantee current conduction efficiency. The buffering characteristic of the air pressure also prevents sudden increases in local pressure that could cause workpiece deformation. The U-shaped frame 104 provides rigid support for the contour welding mechanism 2 and the air pressure chamber 105, preventing vibration or pressure during high-frequency welding from causing overall structural displacement and ensuring the accuracy of the welding position. Once welding in this area is complete, the high-frequency power supply stops outputting, and the pressure application mechanism moves the contour welding mechanism 2 upwards to reset. The air pressure in the air pressure chamber 105 is released, allowing the contour welding mechanism 2 to be pushed back to its original position by the air pressure. In the initial state, the linear module 102 drives the placement plate 103 to move longitudinally, moving the next area of ​​the workpiece to be welded to the area directly below the contour welding mechanism 2. The above alignment, pressure bonding, high-frequency welding and reset process is repeated until all the parts of the complex curved workpiece to be welded are processed. The "pneumatic drive + flexible adaptation" function realizes adaptive bonding to different curved surfaces, eliminating the need to customize templates according to the shape of the workpiece, greatly reducing the mold design and manufacturing cost, saving the time of template replacement, shortening the preparation cycle of multi-variety and small-batch production, and improving the versatility and flexible production capability of the equipment.

[0024] like Figures 3-4As shown, the contour welding mechanism 2 includes multiple sets of equidistantly arranged piston columns 201. All sets of piston columns 201 are slidably installed in a sealed manner within a pressure chamber 105. The pressure chamber 105 is located on the lower surface of the U-shaped frame 104. A connecting arm 202 is fixedly installed on the lower surface of the piston column 201, extending from the lower surface of the pressure chamber 105. A high-elasticity alloy sheet 203 is fixedly installed on the hollow lower surface of the connecting arm 202. An electrode unit 204 is bonded to the lower surface of the high-elasticity alloy sheet 203 using conductive adhesive. The high-elasticity alloy sheet 203 has a downwardly convex, slightly arc-shaped protrusion, which makes the electrode unit 204 bonded to its lower surface also have a slightly arc-shaped protrusion, facilitating adhesion to complex curved workpieces and forming a composite structure of "flexible substrate + functional unit".

[0025] Electrode unit 204 is electrically connected to wire 205 inserted in connecting arm 202 via copper contacts. Wire 205 extends sequentially from connecting arm 202, piston column 201 and air pressure chamber 105 and connects to power port 206. Power port 206 is fixedly installed at one end of U-shaped frame 104 and can be electrically connected to the high-frequency power supply of high-frequency welding machine 1 to form a complete high-frequency current transmission path.

[0026] The conductor 205 is a flexible cable braided from multiple strands of fine copper wire, wrapped with a high-temperature resistant insulating sleeve. Sealing rings are provided at the points where it passes through the connecting arm 202, the internal channel of the piston column 201, and the wire hole of the pressure chamber 105 to ensure the pressure chamber 105 is sealed. A pressure gauge 208 and an air nozzle 207 are fixedly installed at one end of the U-shaped frame 104. Both the pressure gauge 208 and the air nozzle 207 are connected to the pressure chamber 105. The air nozzle 207 is used to connect to an external air source to provide pneumatic power to the pressure chamber 105.

[0027] Through the design of piston column 201, connecting arm 202, high-elasticity alloy sheet 203, electrode unit 204, and wire 205, gas can be injected into the pressure chamber 105 through the air nozzle 207 using an external air source. The pressure gauge 208 monitors the pressure inside the chamber in real time, and the sealed design ensures that the pressure is stably transmitted to multiple sets of piston columns 201. Then, the linear module 102 can be activated to drive the placement plate 103 to accurately move the workpiece directly under the multiple sets of electrode units 204 to complete the alignment. Subsequently, the pressure application mechanism of the high-frequency welding machine 1 drives the high-elasticity alloy sheet 203 and the electrode unit 204 to move down synchronously through the U-shaped frame 104. At this time, the high-elasticity alloy sheet 203, which has a slightly arc-shaped protrusion, serves as a "flexible substrate". This allows the electrode unit 204 to maintain its initial posture adapted to the curved surface. When the electrode unit 204 contacts the workpiece surface, the height difference at different positions forces the corresponding connecting arm 202 to retract into the pneumatic chamber 105 via the piston column 201. The compressed air in the chamber forms a reverse pressure, which is converted into a uniform contact force on the workpiece via the piston column 201. At the same time, the high-elasticity alloy sheet 203 adapts to the curved surface contour by bending or twisting, causing the electrode unit 204 to transition from a "micro-arc protrusion" to a "fitted curved surface" shape. This ensures that each electrode unit 204 can make close contact with the workpiece. This combination of "rigid pneumatic drive + flexible deformation compensation" perfectly solves the fitting problem of complex curved surfaces.

[0028] The transmission path of high-frequency current also relies on the structural design. After the power supply of the high-frequency welding machine 1 is connected through the power interface 206, it is conducted through the flexible wire 205 woven from multiple strands of fine copper wire. The high-temperature resistant insulating sleeve on the outer layer of the wire 205 and the sealing ring at the through-hole ensure the air pressure chamber 105 is sealed and prevent current leakage. The current passes through the built-in channel of the piston column 201 and the hollow structure of the connecting arm 202, and is finally transmitted to the electrode unit 204 through the copper contacts. A closed loop is formed in the contact area between the electrode and the workpiece. Local welding is achieved by utilizing the Joule heating effect. During the welding process, the elastic recovery force of the high elastic alloy sheet 203 and the pressure of the air pressure chamber 105 form a dynamic balance, ensuring that the electrode unit 204 always adheres to the workpiece with stable pressure. This avoids workpiece damage caused by rigid contact and ensures current conduction efficiency. This design allows multiple sets of electrode units 204 to simultaneously adapt to different areas of the curved surface and achieve continuous welding in conjunction with the movement of the overall mechanism, which greatly improves the efficiency and accuracy of complex curved surface processing.

[0029] Based on the above technical solution, the working steps of this solution are summarized as follows: During use, gas can be injected into the pressure chamber 105 through the air nozzle 207 using an external air source. The pressure gauge 208 monitors the pressure inside the chamber in real time, and the sealed design ensures stable pressure transmission to multiple sets of piston columns 201. Subsequently, the linear module 102 can be activated to drive the placement plate 103 to precisely move the workpiece directly below the multiple sets of electrode units 204 for alignment. Then, the pressure application mechanism of the high-frequency welding machine 1 drives the high-elasticity alloy sheet through the U-shaped frame 104. Electrode unit 203 and electrode unit 204 move downwards synchronously. At this time, the highly elastic alloy sheet 203, which has a slightly arc-shaped protrusion, acts as a "flexible substrate," allowing electrode unit 204 to maintain its initial conforming surface posture. Until the electrode unit 204 contacts the workpiece surface, the height difference at different positions forces the corresponding connecting arm 202 to retract into the pneumatic chamber 105 via the piston column 201. The compressed air in the chamber then forms a reverse pressure, which is converted into a uniform contact force on the workpiece via the piston column 201. Simultaneously, the highly elastic alloy sheet 203 moves downwards with the workpiece. The curved surface contour undergoes adaptive bending or twisting to ensure that each electrode unit 204 can make close contact with the workpiece. The transmission path of the high-frequency current also relies on the structural design. After the power supply of the high-frequency welding machine 1 is connected through the power port 206, it is conducted through a flexible wire 205 braided with multiple strands of fine copper wire. The current passes through the built-in channel of the piston column 201, the hollow structure of the connecting arm 202, and finally through the copper contacts to the electrode unit 204, forming a closed loop in the contact area between the electrode and the workpiece. Local welding is achieved using the Joule heating effect. Once the welding of this area is completed, the high-frequency power supply stops outputting, the pressure mechanism drives the contour welding mechanism 2 to move upward and reset, the air pressure in the air pressure chamber 105 is released, allowing the connecting arm 202 to drive the electrode unit 204 to be pushed by the air pressure to return to the initial state, and the linear module 102 then drives the placement plate 103 to move longitudinally, moving the next area of ​​the workpiece to be welded to the area directly below the moving electrode unit 204. Then the above alignment, pressure bonding, high-frequency welding and reset process can be repeated until all the parts of the complex curved workpiece to be welded are processed.

[0030] In summary, the "pneumatic drive + flexible adaptation" function enables adaptive fitting of different curved surfaces, eliminating the need for custom templates based on workpiece shape, significantly reducing mold design and manufacturing costs, saving template replacement time, shortening the preparation cycle for multi-variety, small-batch production, and improving the equipment's versatility and flexible production capabilities.

[0031] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-frequency welding machine contour electrode module for welding complex curved surfaces, characterized in that, include: A high-frequency welding machine (1) has a U-shaped frame (101) fixedly installed on its lower surface. A linear module (102) is fixedly installed on the upper surface of the U-shaped frame (101). A placement plate (103) is fixedly installed on the upper surface of the moving block of the linear module (102). The placement plate (103) is vertically opposite to the contour welding mechanism (2) by being driven longitudinally by the linear module (102). The contour welding mechanism (2) is fixedly installed inside the U-shaped frame (104). The U-shaped frame (104) is fixedly installed on the lower surface of the pressure mechanism in the high-frequency welding machine (1).

2. The high-frequency welding machine contour electrode module for welding complex curved surfaces according to claim 1, characterized in that: The contour welding mechanism (2) includes multiple sets of equally spaced piston columns (201), and the multiple sets of piston columns (201) are all slidably installed in a sealed manner in a pneumatic chamber (105). The pneumatic chamber (105) is opened on the lower surface of the U-shaped frame (104). A connecting arm (202) is fixedly installed on the lower surface of the piston column (201), and the connecting arm (202) extends out from the lower surface of the pneumatic chamber (105). A high-elasticity alloy sheet (203) is fixedly installed on the lower surface of the connecting arm (202) in a hollow shape, and an electrode unit (204) is bonded to the lower surface of the high-elasticity alloy sheet (203) with conductive adhesive.

3. A high-frequency welding machine contour electrode module for welding complex curved surfaces according to claim 2, characterized in that: The high-elasticity alloy sheet (203) has a downward micro-arc protrusion, so that the electrode unit (204) bonded to the lower surface also has a micro-arc protrusion, which facilitates bonding with complex curved workpieces and forms a composite structure of "flexible substrate + functional unit".

4. A high-frequency welding machine contour electrode module for welding complex curved surfaces according to claim 3, characterized in that: The electrode unit (204) is electrically connected to the wire (205) inserted in the connecting arm (202) through copper contacts. The wire (205) extends out from the connecting arm (202), the piston column (201) and the air pressure chamber (105) in sequence and is connected to the power interface (206). The power interface (206) is fixedly installed at one end of the U-shaped frame (104). The power interface (206) can be electrically connected to the high-frequency power supply of the high-frequency welding machine (1) to form a complete high-frequency current transmission path.

5. A high-frequency welding machine contour electrode module for welding complex curved surfaces according to claim 4, characterized in that: The conductor (205) is a flexible cable braided with multiple strands of fine copper wire, wrapped with a high-temperature resistant insulating sleeve. Sealing rings are provided at the points through which the conductor passes through the connecting arm (202), the built-in channel of the piston column (201), and the wire hole of the air pressure chamber (105) to ensure the air pressure chamber (105) is sealed.

6. A high-frequency welding machine contour electrode module for welding complex curved surfaces according to claim 4, characterized in that: A pressure gauge (208) and an air nozzle (207) are fixedly installed at one end of the U-shaped frame (104). The pressure gauge (208) and the air nozzle (207) are both connected to the air pressure chamber (105). The air nozzle (207) is used to connect to an external air source to provide air pressure power to the air pressure chamber (105).

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