A computer monitor arm plasma arc welding apparatus and method of use

Abstract

The application discloses a computer display support arm plasma arc welding device and a use method, relates to the field of plasma welding, and comprises a base, a supporting ring and a supporting rod arranged in the inner cavity of the base, a posture correction assembly arranged in the inner cavity of the base and comprising an adjusting piece arranged in the vertical direction of the central axis of the supporting ring, and a locking piece arranged at the end of the adjusting piece and used for locking the end of the support arm, wherein the computer display support arm plasma arc welding device and the use method are characterized in that the posture correction assembly is arranged, the adjusting piece, the locking piece and the butt joint piece are cooperated, the end of the computer display support arm can be finely adjusted in multiple degrees of freedom before and during welding, the problem that a traditional device is difficult to correct the posture of a thin-walled or special-shaped support arm is effectively solved, the butt joint gap of the welding end is uniform, the amount of misalignment is small, and the coaxiality is high, and therefore the forming quality and the structural strength of a welding seam are remarkably improved.

Description

Technical Field

[0001] This invention relates to plasma welding technology, specifically to a plasma arc welding device and method for using a computer monitor arm. Background Technology

[0002] Computer monitor arms are crucial load-bearing components in monitor support and adjustment systems, typically enabling height, tilt, rotation, and forward / backward position adjustments. To balance strength, weight, and aesthetics, computer monitor arms often utilize hollow metal tubing, bent tubing, aluminum alloy arms, or stainless steel arms. Their ends usually require welding connections to flanges, connecting sleeves, end caps, or rotating shaft connectors. Plasma arc welding offers advantages such as high energy density, a straight arc column, strong penetration, and a relatively small heat-affected zone, making it suitable for welding the end connectors of computer monitor arms.

[0003] However, computer monitor arms are mostly thin-walled tubular or irregularly shaped bent structures, and the end fittings need to meet requirements such as uniform joint gap, small misalignment, and high coaxiality during welding.

[0004] Existing plasma arc welding equipment can only fix the basic position of the workpiece end when welding the arm end, making it difficult to make precise multi-degree-of-freedom adjustments to the spatial position and posture of the workpiece end according to the welding process requirements. When the end to be welded deviates from the optimal welding posture, the incident angle of the plasma arc and the heat input distribution will change, directly affecting the weld formation quality and penetration uniformity. Therefore, this invention develops a plasma arc welding equipment and method for using a computer monitor arm. Summary of the Invention

[0005] The purpose of this invention is to provide a plasma arc welding device and method for computer monitor support arms, so as to solve the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a plasma arc welding device for a computer monitor arm, comprising a base, and a support ring and a support rod disposed in the inner cavity of the base; The attitude correction component is disposed in the inner cavity of the base, including an adjustment component disposed vertically along the central axis of the support ring, and a locking component is provided at the end of the adjustment component. The locking component is used to lock the end of the support arm, and is used to adjust the welding attitude during the welding process of the support arm in order to correct the docking state of the support arm. When the support arm is to be welded, the posture correction component can drive the adjustment component to move according to the preset welding path or the real-time monitoring of the docking deviation, thereby driving the locking component to finely adjust the spatial position and angle of the support arm end, ensuring that the gap at the support arm docking point is uniform and the alignment accuracy meets the requirements of plasma arc welding.

[0007] As a further optimization of the present invention, the adjusting component includes a movable component and a docking component. The docking component is snapped onto the end of the movable component. When the movable component is driven to move, it drives the docking component to move synchronously to correct the spatial posture of the welded end of the support arm, thereby adjusting the docking gap, misalignment, and coaxiality between the welded component and the welded end of the support arm. The attitude correction component also includes a base plate that is snapped into the base, an adjustment member being snapped into the inner cavity of the base plate, and an adjustment block being snapped into the end of the adjustment member.

[0008] As a further optimization of the present invention, a driving block is snapped onto the end of the adjusting block, and the end of the driving block is snapped onto the lower end of the movable part. A movable rod is slidably provided on the inner wall of the movable part, and a movable plate is snapped onto the end of the movable part, the end of the movable plate being snapped onto the end of the docking part.

[0009] As a further optimization of the present invention, positioning blocks are symmetrically arranged on the side of the base plate, and positioning rings are snapped onto the inner walls of the positioning blocks. Positioning grooves are formed on the inner walls of the positioning rings, and the inner walls of the positioning grooves are slidably connected to the outer surfaces of both ends of the movable rod.

[0010] As a further optimization of the present invention, multiple sets of adjusting plates are slidably arranged on the outer surface of the docking component, a calibration component is slidably arranged on the inner wall of the adjusting plate, a support plate is snapped onto the end of the docking component, an annular groove is formed on the outer surface of the support plate, and the inner wall of the annular groove is slidably connected to the outer surface of the end of the calibration component.

[0011] As a further optimization of the present invention, a floating protective component is arranged around the end of the support rod, including a guide and a protective component. The protective component is fitted and slidably disposed in the inner cavity of the guide. When the support arm undergoes radial runout or axial extension during welding, the protective component can adaptively float along the inner cavity of the guide to buffer the deformation impact caused by welding thermal stress. The floating protection assembly also includes a snap-fit ​​block that snaps into the support rod, and a movable part is snap-fitted into the end of the snap-fit ​​block.

[0012] As a further optimization of the present invention, an extension plate is snapped onto the outer surface of the moving part, the end of the extension plate is snapped onto the end of the guide part, and a guide groove is provided at the end of the guide part.

[0013] As a further optimization of the present invention, push rods are rotatably provided at both ends of the extension plate, a connecting block is rotatably provided at the end of the push rod, and a connecting rod is rotatably provided at the end of the connecting block, with the outer surface of the connecting rod slidably connected to the inner wall of the guide groove.

[0014] As a further optimization of the present invention, the protective component is snapped onto the outer surface of the connecting rod, and a protective plate is snapped onto the end of the protective component, and protective grooves are symmetrically opened at the end of the protective plate. The protective groove has a sphere that rotates inside, and a floating plate is snapped onto the end of the sphere.

[0015] A plasma arc welding method for a computer monitor arm, using the welding equipment described in any one of the above-mentioned methods, the welding method comprising the following steps: S1. Place the computer monitor arm to be welded in the support position formed by the support ring, so that the welding end of the arm faces the mating part. Adjust the position of the moving part according to the structural size of the arm so that the floating protective component is outside the welding area of ​​the arm. S2. Pre-connect the parts to be welded to the welding end of the support arm and observe the connection gap, end misalignment and axis deviation between the two. S3. After the large-scale deviation of the welded end is corrected, adjust the adjustment plate and calibration piece respectively to make multiple calibration pieces reasonably distributed along the butt joint and the annular groove, so as to further calibrate the welded end. S4. After the welding end reaches the preset assembly posture, move the plasma arc welding head to the weld start position and keep it at a suitable welding distance and incident angle with the welding end. Start the welding process and the plasma arc performs continuous or segmented welding on the weld. S5. If the outrigger experiences radial runout or axial expansion and contraction due to heat input, the floating plate will first float accordingly. Subsequently, the ball, protective plate, protective components, connecting rod, and guide groove will work together to form displacement compensation, so that the outrigger is still supported by the outside and is not completely rigidly locked. S6. After welding is completed, stop the plasma arc welding head and wait for the welding area to cool to a suitable temperature. Then, release the floating protection component from the outer perimeter of the support arm and the attitude correction component from the calibration support of the support arm in sequence. Remove the welded display support arm from the base.

[0016] Compared with the prior art, the plasma arc welding equipment and method for computer monitor support arms provided by the present invention have the following beneficial effects: By setting up an attitude correction component and utilizing the cooperation of adjustment, locking and docking components, the end of the computer monitor arm can be finely adjusted with multiple degrees of freedom before and during welding. This effectively solves the problem that traditional equipment is difficult to perform precise attitude correction on thin-walled or irregularly shaped arms, ensuring uniform butt joint gap, small misalignment and high coaxiality at the welding end, thereby significantly improving the weld formation quality and structural strength.

[0017] By setting up floating protective components, and utilizing the coordinated operation of guide components, protective components, connecting rods, and floating plates, the radial runout or axial expansion and contraction of the support arm caused by thermal stress can be adaptively buffered during the welding process. This avoids stress concentration or workpiece deformation caused by rigid locking, ensuring the stability of the support arm during the welding process while allowing it to generate necessary micro-displacements to release thermal stress, thereby further improving welding accuracy and yield. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention; Figure 2 This is a schematic diagram of the attitude correction component and the floating protection component provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the attitude correction component structure provided in an embodiment of the present invention; Figure 4 This is a first exploded view of the attitude correction component structure provided in an embodiment of the present invention; Figure 5 This is a second exploded view of the attitude correction component structure provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the floating protection component structure provided in an embodiment of the present invention; Figure 7 This is a first exploded view of the floating protection component structure provided in an embodiment of the present invention; Figure 8 This is a second exploded view of the floating protection component structure provided in an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached drawings: 1. Base; 2. Attitude correction component; 3. Floating protection component; 11. Support ring; 12. Support rod; 21. Base plate; 22. Adjusting component; 221. Adjusting block; 23. Drive block; 24. Movable component; 241. Movable rod; 242. Movable plate; 25. Positioning block; 251. Positioning ring; 252. Positioning groove; 26. Connecting component; 261. Adjusting plate; 262. Calibration component; 27. Support plate; 271. Annular groove; 31. Snap-fit ​​block; 32. Moving component; 33. Extension plate; 331. Push rod; 34. Connecting block; 341. Connecting rod; 35. Guide component; 351. Guide groove; 36. Protective component; 361. Protective plate; 362. Protective groove; 37. Sphere; 371. Floating plate. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Example: Please refer to Figures 1-8 A plasma arc welding device for a computer monitor arm includes a base 1, a support ring 11 and a support rod 12 disposed in the inner cavity of the base 1, an attitude correction component 2, and a floating protection component 3.

[0023] The base 1 serves as the mounting foundation for the entire machine, supporting the computer monitor arm to be welded, as well as the attitude correction component 2 and the floating protection component 3, and ensuring that each component maintains a stable relative position during the welding process. The support ring 11 forms a support or limiting area that adapts to the end of the arm to be welded, and the support rod 12 provides mounting support for the floating protection component 3.

[0024] In some embodiments, the base 1 may be made of a metal plate, frame, or combined support structure with sufficient rigidity, and has internal mounting positions for mounting the support ring 11 and the support rod 12. The support ring 11 is fixedly or detachably connected to the base 1 and is arranged around the predetermined welding area of ​​the arm to be welded, so that the arm can obtain basic support when the ends are joined. The support rod 12 is fixedly mounted on the base 1, and its end extends toward the welding area of ​​the arm so that the floating protective assembly 3 can be arranged around the welding position.

[0025] In use, place the computer monitor arm in the predetermined support position on the base 1 and align the welded end of the arm with the attitude correction component 2; then place the welded parts that need to be connected to the welded end of the arm in the mating position.

[0026] At this point, the attitude correction component 2 is used to adjust the spatial position between the welding end of the support arm and the welded part, and then the floating protection component 3 is used to assist in limiting the outer periphery of the welding area, so that the support arm has a stable initial attitude during the welding process, while allowing a small amount of radial runout and axial extension caused by thermal stress.

[0027] Reference Figure 1-5 As shown, the attitude correction component 2 is disposed in the inner cavity of the base 1, and includes a base plate 21, an adjusting member 22, an adjusting block 221, a driving block 23, a movable member 24, a movable rod 241, a movable plate 242, a positioning block 25, a positioning ring 251, a positioning groove 252, a docking member 26, an adjusting plate 261, a calibration member 262, and a support plate 27. The attitude correction component 2 adjusts the position of the movable member 24, causing the docking member 26 installed at the end of the movable member 24 to produce a corresponding displacement, thereby correcting the spatial attitude of the welded end of the support arm.

[0028] In some embodiments, the base plate 21 is snapped and fixed to the base 1, and serves as the mounting base for the adjusting member 22 and its related transmission structure; the adjusting member 22 is snapped into the inner cavity of the base plate 21, and the end of the adjusting member 22 is connected to the adjusting block 221.

[0029] When the adjusting member 22 is adjusted, the adjusting member 22 causes the adjusting block 221 to move in a predetermined direction. The adjusting block 221 further drives the driving block 23 to move, and the driving block 23 transmits the adjustment displacement to the movable member 24. By changing the adjustment amount of the adjusting member 22, the position of the movable member 24 relative to the base plate 21 can be changed, thereby providing the adjustment amount required for posture correction of the welding end of the support arm.

[0030] The drive block 23 is snapped onto the end of the adjusting block 221, and its other end is snapped onto the lower end of the movable member 24. The movable member 24 has a movable rod 241 slidably mounted on its inner wall, so that the movable member 24 can be guided along the movable rod 241 when it is displaced, thus avoiding disorderly swaying during the adjustment process.

[0031] A movable plate 242 is snapped onto the end of the movable component 24, and the movable plate 242 snaps onto the end of the docking component 26, thereby transmitting the displacement of the movable component 24 to the docking component 26 via the movable plate 242. Thus, with the force transmitted sequentially by the adjusting component 22, adjusting block 221, driving block 23, movable component 24, and movable plate 242, the docking component 26 can move synchronously with the movable component 24.

[0032] Specifically, the positioning blocks 25 are symmetrically arranged on the side of the base plate 21, the positioning ring 251 is snapped into the inner wall of the positioning blocks 25, the inner wall of the positioning ring 251 forms a positioning groove 252, and the two ends of the movable rod 241 are slidably connected to the corresponding positioning grooves 252.

[0033] By constraining both ends of the movable rod 241 with the positioning ring 251 and the positioning groove 252, the movable part 24 can be kept within the predetermined motion trajectory when driven. At the same time, the symmetrically arranged positioning structure improves the stability of the movable part 24 during the motion process, thereby reducing the adjustment error caused by lateral swaying during the attitude correction process.

[0034] The inner cavity of the drive block 23 is equipped with a device with power output, such as a motor, to drive the movable part 24 to rotate around the end of the drive block 23.

[0035] The inner cavity of the positioning block 25 is equipped with components such as an electric telescopic rod that have telescopic functions, and is connected to an external control device to drive the base plate 21 to move, thereby adjusting the position of the movable part 24 on the movable rod 241, and thus changing the position of the docking part 26 in the horizontal direction, so as to achieve fine adjustment compensation of the center position of the end of the support arm to be welded.

[0036] Reference Figure 4-5 As shown, the docking part 26 is used to form a support and calibration fit with the welding end of the support arm or the welding part to be connected. Multiple sets of adjustment plates 261 are slidably arranged on its outer surface. Each adjustment plate 261 can adjust its position along the outer surface of the docking part 26. A calibration part 262 is slidably arranged on the inner wall of the adjustment plate 261. The calibration part 262 can generate sliding displacement relative to the adjustment plate 261.

[0037] The end of the docking member 26 is snapped into the support plate 27. An annular groove 271 is formed on the outer surface of the support plate 27. The end of the calibration member 262 is fitted and slids in the annular groove 271, so that multiple calibration members 262 can form distributed support around the end of the support plate 27.

[0038] In some embodiments, the welding end of the support arm is first placed in the support area formed by the mating part 26 and the support plate 27. Then, based on the actual deviation between the welding part and the welding end of the support arm, the positions of the adjusting plate 261 and the calibrating part 262 are adjusted so that the end of the calibrating part 262 forms an appropriate support relationship with the part to be welded. Since the calibrating part 262 slides with the annular groove 271, the circumferential support position of the welding end of the support arm can be adjusted while changing its installation position, constraining the welding end from multiple directions, thereby helping to control the butt joint gap, misalignment, and coaxiality of the welding end.

[0039] During the attitude correction process, the initial position of the mating component 26 is first determined based on the structural dimensions of the arm to be welded. Then, the adjusting component 22 is adjusted so that the adjusting block 221, the driving block 23, the movable component 24, and the movable plate 242 sequentially generate linked displacements, thereby moving the mating component 26 towards the target position. Subsequently, the adjusting plates 261 and the calibration components 262 are finely adjusted according to the local deviations at the welding end, so that the welding end of the arm obtains stable support at multiple positions. When the welding component and the welding end of the arm reach the preset docking state, the adjustment of the adjusting component 22 and the calibration components 262 is stopped, so that the attitude correction component 2 maintains its current position.

[0040] The calibration component 262 can be made of an elastic material or a rigid material with a flexible wear-resistant layer on the surface, so as to provide effective support while avoiding damage to the surface coating or substrate of the welded end of the arm. Through the cooperation of the above-mentioned multiple sets of adjustment plates 261 and calibration component 262, it is possible to adapt to the end of the arm with different diameters or irregular cross-sections and achieve high-precision coaxiality calibration.

[0041] With the above structure, the attitude correction component 2 does not only fix the arm in a single direction, but first uses the displacement transmission between the adjusting component 22 and the moving component 24 to change the overall spatial position of the welding end, and then uses the circumferential support relationship formed by multiple sets of adjusting plates 261, calibrating component 262 and annular groove 271 to calibrate the local position, so that coarse adjustment and fine adjustment form a continuous calibration process, thereby reducing the welding end misalignment problem caused by inaccurate clamping position in traditional fixed fixtures.

[0042] Reference Figure 1 , Figure 6-8 As shown, the floating protective assembly 3 is arranged around the end of the support rod 12, and includes a snap-fit ​​block 31, a movable part 32, an extension plate 33, a push rod 331, a connecting block 34, a connecting rod 341, a guide part 35, a guide groove 351, a protective part 36, a protective plate 361, a protective groove 362, a ball 37, and a floating plate 371. This assembly is used to flexibly limit the outer periphery of the welding area of ​​the support arm during the welding process, and to provide floating compensation when the support arm undergoes dimensional changes, radial runout, or axial expansion and contraction due to heat.

[0043] In some embodiments, the snap-fit ​​block 31 is snap-fitted onto the end of the support rod 12, and the movable member 32 is snap-fitted onto the snap-fit ​​block 31, so that the movable member 32 can be adjusted in a predetermined direction relative to the support rod 12.

[0044] An extension plate 33 is snapped onto the outer surface of the movable component 32. The extension plate 33 is used to expand the effective range of the floating protective assembly 3 and serves as the mounting base for the push rod 331, connecting block 34, and connecting rod 341. By changing the position of the movable component 32, the position of the extension plate 33 relative to the base 1 and the welding area of ​​the support arm can be changed to adapt to support arm structures of different sizes.

[0045] Specifically, push rods 331 are rotatably provided at both ends of the extension plate 33, and a connecting block 34 is rotatably connected to the end of the push rod 331 away from the extension plate 33; the connecting block 34 is then rotatably connected to the connecting rod 341, and the outer surface of the connecting rod 341 is engaged and slidably fitted with the guide groove 351 at the end of the guide member 35.

[0046] The movement generated by the change in position of the extension plate 33 can be transmitted to the guide area of ​​the guide member 35 through the push rod 331, the connecting block 34 and the connecting rod 341, and the guide groove 351 constrains the movement direction of the connecting rod 341, so that the floating protective component 3 maintains a stable movement trajectory during the expansion or contraction process.

[0047] The guide member 35 is snapped into the end of the extension plate 33. The guide member 35 has a guide groove 351 inside. The protective member 36 is snapped into the outer surface of the connecting rod 341. When the connecting rod 341 moves along the guide groove 351, the protective member 36 moves synchronously with the connecting rod 341, thereby changing the position of the protective member 36 relative to the welding area of ​​the support arm.

[0048] The protective component 36 can be made of a high-temperature resistant and flexible material, such as ceramic fiber composite material or heat-resistant silicone. A protective plate 361 is snapped onto its end. A protective groove 362 is provided on the side of the protective plate 361 facing the support arm. A ball 37 is rotatably arranged inside the protective groove 362. A floating plate 371 is snapped onto the end of the ball 37.

[0049] After the outrigger is clamped, the position of the extension plate 33 is adjusted by the moving part 32, so that the push rods 331 on both sides and the connecting block 34 are in a suitable initial position for protection. At this time, the connecting rod 341 is located in the predetermined area of ​​the guide groove 351, and the protective part 36 drives the protective plate 361 to approach the welding area of ​​the outrigger. The floating plate 371 is movably connected to the protective plate 361 through the ball 37, so that the floating plate 371 can swing or make slight adjustments according to the local force direction when it contacts the surface of the outrigger, thereby avoiding the rigid protective part 36 directly pressing against the outrigger and causing additional clamping stress.

[0050] When the support arm experiences radial runout due to heat during plasma arc welding, the support arm first acts on the floating plate 371. The floating plate 371 transmits the force to the protective plate 361 and the protective component 36 through the ball 37. The protective component 36 drives the connecting rod 341 to generate a corresponding floating displacement along the guide groove 351, and through the connecting block 34 and the push rod 331, it creates an adaptive movement for the extension plate 33. At this time, the floating protective component 3 still provides a certain degree of peripheral support to the support arm, but it does not completely restrict the necessary slight displacement of the support arm caused by thermal stress, thereby reducing the risk of deformation caused by the superposition of welding thermal stress and rigid clamping.

[0051] When the outrigger undergoes axial expansion and contraction during welding, the protective component 36 can also adaptively move along the guide groove 351. The connecting rod 341 slides within the guide groove 351 to release the displacement caused by the length change, and the floating plate 371 adapts to the change in the contact state of the outrigger surface through the rotation of the ball 37. Thus, the floating protective assembly 3 forms a protective method that combines guided movement, rotational floating, and external support, ensuring that the outrigger remains near the target welding area even after being subjected to welding heat input.

[0052] Furthermore, the attitude correction component 2 and the floating protection component 3 work together during the welding process: the attitude correction component 2 performs spatial attitude calibration of the welding end of the support arm before welding, ensuring that the welding end reaches the preset butt gap, misalignment, and coaxiality; the floating protection component 3 provides flexible peripheral constraint to the calibrated welding end during welding, absorbing some deformation through floating displacement when thermal deformation tends to occur. Therefore, the former is responsible for establishing the initial geometric reference for welding, while the latter is responsible for maintaining geometric stability during the welding process. Together, they reduce weld offset caused by clamping deviation and welding thermal deformation.

[0053] In this embodiment, the plasma arc welding head can be positioned above or to the side of the welding end of the support arm, and performs welding on the joint area between the welding end of the support arm and the workpiece according to a predetermined welding trajectory. Before welding, the incident position of the welding torch relative to the weld seam is adjusted according to process requirements so that the welding heat source falls on the welding area calibrated by the attitude correction component 2. During welding, the floating protection component 3 maintains flexible restraint on the periphery of the support arm to reduce the impact of sudden changes in the position of the support arm on the welding trajectory. This plasma arc welding head is a welding process execution component, and its specific structure can be configured according to the plasma arc welding equipment used.

[0054] A plasma arc welding method for a computer monitor arm, using the aforementioned welding equipment, includes the following steps: S1. Place the computer monitor arm to be welded in the support position formed by the support ring 11, so that the welding end of the arm faces the mating part 26. Adjust the position of the moving part 32 according to the structural size of the arm so that the floating protective component 3 is located outside the welding area of ​​the arm. S2. Pre-connect the parts to be welded to the welding end of the support arm and observe the connection gap, end misalignment and axis deviation between the two. S3. After the large-scale deviation of the welding end is corrected, adjust the adjustment plate 261 and the calibration piece 262 respectively so that multiple calibration pieces 262 are reasonably distributed along the butt joint 26 and the annular groove 271, thereby further calibrating the welding end. S4. After the welding end reaches the preset assembly posture, move the plasma arc welding head to the weld start position and keep it at a suitable welding distance and incident angle with the welding end. Start the welding process and the plasma arc performs continuous or segmented welding on the weld. S5. If the outrigger experiences radial runout or axial extension / retraction due to heat input, the floating plate 371 will first float accordingly. Subsequently, the ball 37, the protective plate 361, the protective component 36, the connecting rod 341, and the guide groove 351 will work together to form displacement compensation, so that the outrigger is still supported by the outside and is not completely rigidly locked. S6. After welding is completed, stop the plasma arc welding head and wait for the welding area to cool to a suitable temperature. Then, release the outer constraint of the floating protection component 3 on the support arm and the calibration support of the attitude correction component 2 on the support arm in sequence, and remove the welded display support arm from the base 1.

[0055] The control device can choose a microcontroller as the control terminal. In this embodiment, the microcontroller is a typical embedded microcontroller unit, consisting of an arithmetic logic unit (ALU), a controller, memory, input / output devices, etc., essentially a miniature computer. Compared to general-purpose microprocessors used in personal computers, it emphasizes self-sufficiency (no external hardware required) and cost savings. Its biggest advantage is its small size, allowing it to be placed inside the instrument, but it has limited storage capacity, simple input / output interfaces, and low power consumption.

[0056] The working principle is as follows: First, the base 1 is placed in the designated position, and the connection status between the support ring 11, support rod 12, attitude correction component 2, and floating protection component 3 is checked. Then, the computer monitor arm to be welded is placed in the support position formed by the support ring 11, so that the welding end of the arm faces the mating part 26. According to the structural dimensions of the arm, the position of the moving part 32 is adjusted so that the floating protection component 3 is located outside the welding area of ​​the arm.

[0057] Next, the welding parts to be connected are pre-connected with the welding end of the support arm, and the connection gap, end misalignment and axis deviation between the two are observed. Adjust the adjustment part 22 of the attitude correction component 2 so that the adjustment block 221 drives the drive block 23 and the movable part 24 to move. The movable part 24 then drives the docking part 26 to change position through the movable plate 242. After the large-scale deviation of the welding end is corrected, the adjustment plate 261 and the calibration part 262 are adjusted respectively so that multiple calibration parts 262 are reasonably distributed along the docking part 26 and the annular groove 271, thereby further calibrating the welding end.

[0058] Once the welding end reaches the preset assembly posture, move the plasma arc welding head to the weld start position, maintaining a suitable welding distance and incident angle between it and the welding end. Start the welding process, and the plasma arc performs continuous or segmented welding on the weld.

[0059] During this process, if the outrigger experiences radial runout or axial extension / retraction due to heat input, the floating plate 371 will first float accordingly. Subsequently, the ball 37, the protective plate 361, the protective component 36, the connecting rod 341, and the guide groove 351 will work together to form displacement compensation, so that the outrigger is still supported by the outside and is not completely rigidly locked.

[0060] After welding is completed, stop the plasma arc welding head and wait for the welding area to cool to a suitable temperature. Then, release the outer constraint of the floating protection component 3 on the support arm and the calibration support of the attitude correction component 2 on the support arm in sequence, and remove the welded display support arm from the base 1.

[0061] For the next workpiece, the positions of the adjusting component 22, adjusting plate 261, calibrating component 262 and moving component 32 can be readjusted according to its specifications, so that the equipment can re-establish the positioning and protection state adapted to the corresponding workpiece.

[0062] Through the above-described specific structure and usage process, the present invention can continuously calibrate the displacement of the welding end of the support arm using the attitude correction component 2 before welding, and improve the support stability of the welding end through the multi-point, circumferentially distributed calibration components 262; during the welding process, the floating protection component 3 uses the guide groove 351, connecting rod 341 and ball 37 to form a floating outer protection, so that the support arm can obtain a certain displacement release space when it is subjected to welding thermal stress and causes radial runout or axial expansion and contraction, reducing the additional deformation caused by rigid clamping, thereby improving the weld formation consistency and welding connection accuracy after plasma arc welding.

[0063] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A plasma arc welding device for a computer monitor arm, characterized in that, Includes a base (1), and a support ring (11) and a support rod (12) disposed in the inner cavity of the base (1); The attitude correction component (2) is set in the inner cavity of the base (1), including an adjustment component arranged vertically along the central axis of the support ring (11), and a locking component is provided at the end of the adjustment component. The locking component is used to lock the end of the support arm, and is used to adjust the welding attitude during the welding process of the support arm, so as to correct the docking state of the support arm. When the support arm is to be welded, the posture correction component (2) can drive the adjustment component to move according to the preset welding path or the real-time monitoring of the docking deviation, thereby driving the locking component to finely adjust the spatial position and angle of the end of the support arm, so as to ensure that the gap at the docking point of the support arm is uniform and the alignment accuracy meets the requirements of plasma arc welding.

2. The plasma arc welding equipment for a computer monitor support arm according to claim 1, characterized in that, The adjusting component includes a movable component (24) and a docking component (26). The docking component (26) is snapped onto the end of the movable component (24). When the movable component (24) is driven to move, the docking component (26) is driven to move synchronously to correct the spatial posture of the welded end of the support arm, thereby adjusting the docking gap, misalignment and coaxiality between the welded component and the welded end of the support arm. The attitude correction component (2) also includes a base plate (21) that is snapped into the base (1). An adjustment member (22) is snapped into the inner cavity of the base plate (21), and an adjustment block (221) is snapped into the end of the adjustment member (22).

3. The plasma arc welding equipment for a computer monitor support arm according to claim 2, characterized in that, The end of the adjusting block (221) is fitted with a driving block (23), and the end of the driving block (23) is fitted with the lower end of the movable part (24). The inner wall of the movable part (24) is slidably fitted with a movable rod (241), and the end of the movable part (24) is fitted with a movable plate (242), and the end of the movable plate (242) is fitted with the end of the docking part (26).

4. The plasma arc welding equipment for a computer monitor support arm according to claim 3, characterized in that, The base plate (21) is symmetrically provided with positioning blocks (25) on its side. The inner wall of the positioning block (25) is fitted with a positioning ring (251). The inner wall of the positioning ring (251) is provided with a positioning groove (252). The inner wall of the positioning groove (252) is slidably connected to the outer surface of both ends of the movable rod (241).

5. The plasma arc welding equipment for a computer monitor support arm according to claim 4, characterized in that, Multiple sets of adjustment plates (261) are slidably arranged on the outer surface of the docking part (26). A calibration part (262) is slidably arranged on the inner wall of the adjustment plate (261). A support plate (27) is snapped onto the end of the docking part (26). An annular groove (271) is opened on the outer surface of the support plate (27). The inner wall of the annular groove (271) is slidably connected to the outer surface of the end of the calibration part (262).

6. The plasma arc welding equipment for a computer monitor support arm according to claim 1, characterized in that, The floating protective component (3) is arranged around the end of the support rod (12) and includes a guide (35) and a protective component (36). The protective component (36) is fitted and slidably disposed in the inner cavity of the guide (35). When the support arm undergoes radial runout or axial extension during welding, the protective component (36) can adaptively float along the inner cavity of the guide (35) to buffer the deformation impact caused by welding thermal stress. The floating protective assembly (3) also includes a snap-fit ​​block (31) that snaps into the support rod (12), and a movable part (32) is snap-fitted into the end of the snap-fit ​​block (31).

7. The plasma arc welding equipment for a computer monitor support arm according to claim 6, characterized in that, An extension plate (33) is snapped onto the outer surface of the movable part (32), and the end of the extension plate (33) is snapped onto the end of the guide (35). Meanwhile, a guide groove (351) is provided at the end of the guide (35).

8. The plasma arc welding equipment for a computer monitor support arm according to claim 7, characterized in that, Both ends of the extension plate (33) are rotatably provided with push rods (331), the ends of the push rods (331) are rotatably provided with connecting blocks (34), the ends of the connecting blocks (34) are rotatably provided with connecting rods (341), and the outer surface of the connecting rods (341) is slidably connected to the inner wall of the guide groove (351).

9. The plasma arc welding equipment for a computer monitor support arm according to claim 8, characterized in that, The protective component (36) is snapped onto the outer surface of the connecting rod (341), and a protective plate (361) is snapped onto the end of the protective component (36), and protective grooves (362) are symmetrically opened at the end of the protective plate (361). The protective groove (362) is rotatably provided with a ball (37), and a floating plate (371) is snapped onto the end of the ball (37).

10. A method for plasma arc welding of a computer monitor arm, characterized in that, The welding method, using the welding equipment as described in any one of claims 1-9, comprises the following steps: S1. Place the computer monitor arm to be welded in the support position formed by the support ring (11), so that the welding end of the arm faces the butt joint (26). Adjust the position of the moving part (32) according to the structural size of the arm, so that the floating protective component (3) is located outside the welding area of ​​the arm. S2. Pre-connect the parts to be welded to the welding end of the support arm and observe the connection gap, end misalignment and axis deviation between the two. S3. After the large-scale deviation of the welding end is corrected, the adjustment plate (261) and the calibration piece (262) are adjusted respectively so that multiple calibration pieces (262) are reasonably distributed along the butt joint (26) and the annular groove (271) to further calibrate the welding end. S4. After the welding end reaches the preset assembly posture, move the plasma arc welding head to the weld start position and keep it at a suitable welding distance and incident angle with the welding end. Start the welding process and the plasma arc performs continuous or segmented welding on the weld. S5. If the outrigger experiences radial runout or axial extension due to heat input, the floating plate (371) will first float accordingly, and then the ball (37), the protective plate (361), the protective component (36), the connecting rod (341) and the guide groove (351) will work together to form displacement compensation, so that the outrigger is still supported by the outside and is not completely rigidly locked. S6. After welding is completed, stop the plasma arc welding head and wait for the welding area to cool to a suitable temperature. Then, release the floating protection component (3) from the outer perimeter of the support arm and the attitude correction component (2) from the calibration support of the support arm in sequence. Remove the welded display support arm from the base (1).

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