Intelligent bicycle welding manipulator

Abstract

The invention relates to the technical field of bicycle welding, and provides an intelligent bicycle welding manipulator which comprises a working table and a mechanical arm arranged on one side of the working table, a connecting base is installed at the tail end of the mechanical arm, a welding gun is installed on the connecting base, and a clamping component used for clamping a bicycle frame is arranged on the other side of the working table; a neck bent pipe is installed at the lower end of the welding gun, a nozzle is installed at the lower end of the neck bent pipe, a vibration material preventing assembly is arranged in the nozzle, and a material blocking assembly is arranged in the middle of the vibration material preventing assembly. The tremble material prevention assembly comprises a hollow conical ring sleeve coaxially arranged on the inner wall of the opening of the nozzle and a circulation bevel opening formed in the lower portion of the inner wall of the hollow conical ring sleeve. When the device is used, protective gas is expanded into a high-frequency self-cleaning vibration and double-layer air curtain protection synergistic mechanism through the vibration anti-material assembly, splash accumulation is prevented and controlled, runner deformation, uneven protection and hidden danger of air holes are avoided, and the welding seam strength and the frame welding quality are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of bicycle welding technology, and more specifically, to an intelligent bicycle welding robot. Background Technology

[0002] The core triangular frame of a bicycle is the main load-bearing structure of the entire vehicle. Its welding quality directly determines the impact resistance, durability, and riding safety of the entire vehicle. It is a key process in frame manufacturing. This part is made up of multiple tubes joined together at complex spatial angles to form multiple continuous circling welds. Currently, the mainstream technology in the industry is to use electric arc welding to achieve a reliable connection between the tubes.

[0003] With the advancement of intelligent manufacturing and the innovation of bicycle production processes, welding robots have become the preferred execution unit for bicycle frame welding. Through pre-programmed precise positioning and trajectory planning, the robot guides the welding torch to move uniformly along the pipe joint and establishes a stable electric arc between the welding wire and the workpiece as a heat source, causing the base material and welding wire to melt and form a strong weld, thereby achieving consistent and high-quality connection for complex spatial welds.

[0004] However, during the welding of bicycle frames by existing welding robots, spatter from the welding torch's contact tip is a common phenomenon, especially under high-current welding conditions. The spatter particles generated by the contact tip tend to scatter and adhere to the inner wall of the welding torch nozzle, accumulating over time. These deposits gradually alter the original shape of the gas flow channels inside the nozzle, affecting the uniformity of the shielding gas flow. Uneven gas flow can lead to inconsistent distribution of the shielding gas curtain around the molten pool, increasing the probability of porosity in the weld and adversely affecting its strength and toughness. Ultimately, this impacts the safety and reliability of the bicycle frame welding structure.

[0005] Therefore, this application proposes an intelligent bicycle welding robot to solve the above problems. Summary of the Invention

[0006] Technical problem to be solved: In view of the problems existing in the prior art, the purpose of this invention is to provide an intelligent bicycle welding robot, which solves the problem that when the intelligent bicycle welding robot is welding with high current, the spatter particles from the welding torch conductive nozzle adhere to and accumulate on the inner wall of the nozzle, change the gas flow channel, thereby destroying the uniformity of the protective gas, affecting the quality of the weld, and ultimately endangering the safety and reliability of the bicycle frame welding structure.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an intelligent bicycle welding robot, comprising a worktable and a robotic arm disposed on one side of the worktable, a connecting seat being installed at the end of the robotic arm, a welding torch being installed on the connecting seat, and a clamping component for clamping a bicycle frame being provided on the other side of the worktable; a neck bend tube being installed at the lower end of the welding torch, a nozzle being installed at the lower end of the neck bend tube, a vibration-damping component being provided inside the nozzle, and a material-blocking component being provided in the middle of the vibration-damping component; The vibration prevention component includes: a hollow conical ring sleeve coaxially disposed on the inner wall of the nozzle opening and an aperture oblique opening opened at the lower part of the inner wall of the hollow conical ring sleeve. Multiple sets of vibration plates are installed in a ring on the inner ring wall of the hollow conical ring sleeve, and a flow-blocking ring is provided on the outer ring wall of the hollow conical ring sleeve corresponding to the axial rear of each set of vibration plates. During operation, the protective airflow enters the hollow conical ring sleeve, and its flow field interacts with the vibration plates and flow-blocking rings to form turbulence, which excites the inner wall of the hollow conical ring sleeve to generate self-cleaning wall surface vibration, thus inhibiting the adhesion of welding molten spatter.

[0008] In a new embodiment, the nozzle is divided into an upper connecting cavity and a lower mouth cavity by an integrally formed isolation disc; the outer side of the isolation disc is provided with radially distributed annular flow ports, and the middle of the isolation disc is provided with an insertion hole; a conductive nozzle support is installed at the lower end of the neck bend, and a conductive nozzle is installed at the lower end of the conductive nozzle support; the neck bend, the conductive nozzle support, and the conductive nozzle are coaxially connected from top to bottom to form a tubular component, which passes through the connecting cavity and the insertion hole, so that the welding wire outlet end of the conductive nozzle is suspended in the mouth cavity.

[0009] In a new embodiment, the neck bend includes a welding wire spool, a flow guiding film ring coaxially sleeved outside the welding wire spool, and an outer ring sleeve coaxially sleeved outside the flow guiding film ring; the flow guiding film ring is provided with annularly distributed flow film grooves, which constitute the flow channel of the protective gas; a release ring is installed on the outer side of the lower end of the neck bend, the release ring closely abuts against the upper end of the isolation disk, and its position is aligned with the upper port of the radial circulation port to ensure that the protective gas flows smoothly through this channel.

[0010] In a new embodiment, a locking ring is installed on the neck bend, and the locking ring is threadedly connected to the upper end of the nozzle to fix the neck bend to the nozzle.

[0011] In a new embodiment, an inner guide assembly for secondary guiding of protective airflow is installed in the middle of the hollow conical ring sleeve. The inner guide assembly includes a guide sleeve and a baffle ring. The guide sleeve is coaxially sleeved outside the conductive nozzle and is connected to the inner cavity of the hollow conical ring sleeve. The baffle ring is fixedly installed at the connection part of the air inlet at the rear end of the outer ring wall of the guide sleeve. When the protective airflow enters the rear end of the guide sleeve, it is blocked by the baffle ring and diverted, and part of the airflow is guided to the inner cavity of the hollow conical ring sleeve.

[0012] In a new embodiment, the material blocking assembly includes: a bump ring, installed on the outer wall of the flow guide sleeve; a baffle plate, disposed below the bump ring, wherein the rear end of the baffle plate has an embedded ring groove, and the embedded ring groove engages with the bump ring; and a disassembly hook hole, formed on the lower end face of the baffle plate.

[0013] In a new embodiment, the conductive nozzle support is provided with a flow channel assembly, which includes a channel sleeve and heat-conducting strips. The conductive nozzle support is provided with a channel sleeve, the upper end of which is installed on the lower end face of the isolation disk, so that the internal flow channel of the channel sleeve is connected to the radial circulation port of the isolation disk, and its lower end opening is aligned with the air inlet at the rear end of the guide sleeve. Multiple heat-conducting strips are equidistantly installed on the inner ring wall of the channel sleeve, and the inner ends of the heat-conducting strips are all in contact with the outer wall of the conductive nozzle support.

[0014] In a new embodiment, the hollow cone ring is connected to the inner wall of the nozzle through a flexible bushing disposed on its outer wall.

[0015] In a new embodiment, the clamping component includes a drive motor, a right-angle frame driven to rotate by the drive motor, and a plurality of joint clamps mounted on the right-angle frame. The plurality of joint clamps cooperate with each other to form a clamping position for fixing and clamping the bicycle triangular frame.

[0016] Beneficial effects: Compared with the prior art, the advantages of the present invention are: 1. By adding a vibration anti-splash component inside the welding torch, the single function of the protective gas is expanded into a synergistic mechanism of driving high-frequency self-cleaning vibration and constructing a double-layer gas curtain protection, which actively and effectively prevents the accumulation of molten spatter on the inner wall of the nozzle, and solves the problem of automated welding of bicycle frames caused by gas flow channel deformation and uneven protection due to spatter adhesion, which in turn produces porosity and affects the weld strength.

[0017] 2. Through the coupling of fluid and structure composed of hollow conical ring sleeve, vibrating plate and flow-blocking ring, the protective airflow forms multi-directional turbulence in this structure, which efficiently excites the vibrating plate to generate high-frequency micro-amplitude vibration for self-cleaning. With the flexible bushing set on the outer wall of hollow conical ring sleeve, the vibration energy is limited to the cleaning area, avoiding high-frequency vibration from interfering with the nozzle body and welding accuracy, thus achieving a unity of cleaning effect and welding stability.

[0018] 3. By setting up a material blocking component, it can not only block spatter in conventional welding, but also effectively prevent molten solder from flowing back in non-standard welding postures such as tilting, providing key safety assurance for complex space operations. Its snap-fit ​​and disassembly hook hole make it a quick-change sacrificial part, making maintenance work fast and simple, and maintaining the safety of core components at the lowest cost.

[0019] 4. By setting up an inner guide assembly, the wind baffle ring distributes a single protective airflow in two streams, simultaneously achieving vibration cleaning and central protection. The flow channel assembly utilizes the low-temperature protective gas during the transport process, and the high-temperature conductive nozzle support is pre-cooled through the heat-conducting strip, improving the utilization effect of the protective gas.

[0020] 5. The integrated molding of the nozzle and the isolation plate ensures the sealing and structural rigidity of the airflow channel, providing effective positioning for the conductive nozzle. At the same time, the layered flow guiding structure of the neck bend tube, through the flow film groove on its flow guiding film ring, rectifyes the protective gas, transforming it from disordered turbulence into stable laminar flow, significantly improving airflow efficiency and protective effect, thereby providing a more stable and efficient protective airflow for the inner sleeve flow guiding component and the vibration damping component. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a front view of the present invention.

[0023] Figure 3 This is a schematic diagram of the assembly structure of the connector and welding gun of the present invention.

[0024] Figure 4 This is a schematic diagram of the location and structure of the vibration damping component of the present invention.

[0025] Figure 5 This is a schematic diagram of the internal structure of the nozzle of the present invention.

[0026] Figure 6 This is a schematic diagram of the positional structure of the resistive material assembly of the present invention.

[0027] Figure 7 For the present invention Figure 6 Enlarged view of the structure at point A.

[0028] Figure 8 This is a schematic diagram of the positional structure of the flow channel assembly of the present invention.

[0029] Figure 9 This is a schematic diagram of the disassembled structure of the conductive nozzle, conductive nozzle support, and neck bend tube of the present invention.

[0030] Figure 10 This is a schematic diagram of the neck bend tail section structure of the present invention.

[0031] The attached diagram is labeled as follows: 1. Workbench; 2. Robotic arm; 3. Connecting seat; 4. Welding torch; 5. Neck bend; 51. Conductive nozzle support; 52. Conductive nozzle; 53. Welding wire spool; 54. Flow guiding membrane ring; 55. Outer ring sleeve; 56. Release ring; 6. Nozzle; 61. Isolation disc; 611. Radial circulation port; 612. Insertion hole; 62. Connecting cavity; 63. Mouth cavity; 7. Vibration damping assembly; 71. Hollow conical ring sleeve; 72. Circulation bevel; 73. Vibration damper; 74. Flow choke ring; 8. Material blocking assembly; 81. Protrusion ring; 82. Blocking plate; 83. Embedded ring groove; 84. Removal hook hole; 9. Inner airflow guide assembly; 91. Airflow guide sleeve; 92. Wind deflector ring; 10. Flow channel assembly; 101. Passage sleeve; 102. Heat conduction strip. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] This application provides an intelligent bicycle welding robot that solves the problem that during high-current welding, spatter particles from the welding torch nozzle adhere to and accumulate on the inner wall of the nozzle, altering the gas flow path, thereby disrupting the uniformity of the protective gas, affecting weld quality, and ultimately jeopardizing the safety and reliability of the bicycle frame welding structure. In use, a vibration-protective component extends the protective gas function to a synergistic mechanism of high-frequency self-cleaning vibration and double-layer gas curtain protection, achieving proactive control over the accumulation of molten spatter. This avoids gas flow path deformation, uneven protection, and porosity risks, ensuring weld strength and the quality of automated bicycle frame welding.

[0034] The technical solutions in this application are intended to solve the above-mentioned technical problems, and the overall approach is as follows.

[0035] Example 1, please refer to Figures 1-10This application provides an intelligent bicycle welding robot, including a worktable 1 and a robotic arm 2 disposed on one side of the worktable 1. A connecting seat 3 is installed at the end of the robotic arm 2, and a welding torch 4 is installed on the connecting seat 3. A clamping component for clamping a bicycle frame is provided on the other side of the worktable 1. A neck bend 5 is installed at the lower end of the welding torch 4, and a nozzle 6 is installed at the lower end of the neck bend 5. A vibration-damping component 7 is provided inside the nozzle 6, and a material-blocking component 8 is provided in the middle of the vibration-damping component 7. The vibration-damping component 7 includes: a component coaxially disposed at the opening of the nozzle 6. The hollow conical ring sleeve 71 is located on the inner wall of the hollow conical ring sleeve 71, and the circulating oblique opening 72 is opened at the lower part of the inner wall of the hollow conical ring sleeve 71. Multiple sets of chattering discs 73 are installed in a ring on the inner ring wall of the hollow conical ring sleeve 71. A flow-blocking ring 74 is provided on the outer ring wall of the hollow conical ring sleeve 71 corresponding to the axial rear of each set of chattering discs 73. During operation, the protective airflow enters the hollow conical ring sleeve 71, and its flow field interacts with the chattering discs 73 and the flow-blocking ring 74 to form turbulence, which excites the inner wall of the hollow conical ring sleeve 71 to generate self-cleaning wall surface vibration and suppress the adhesion of welding molten spatter.

[0036] Furthermore, the hollow cone ring 71 is connected to the inner wall of the nozzle 6 through a flexible bushing provided on its outer wall.

[0037] Furthermore, the clamping component includes a drive motor, a right-angle frame driven to rotate by the drive motor, and multiple joint clamps mounted on the right-angle frame. The multiple joint clamps cooperate with each other to form a clamping position for fixing and clamping the bicycle triangle frame.

[0038] In the preferred embodiment of this solution, the welding robot intelligently controls the protective airflow, expanding the function of the protective airflow from single protection to a synergistic effect. The vibration anti-splash component 7 intelligently utilizes the airflow to simultaneously achieve high-frequency self-cleaning vibration and double-layer air curtain protection, thereby actively addressing the problem of spatter adhesion and ensuring the high stability and process continuity of the bicycle frame welding process.

[0039] Specifically, the working process of this intelligent bicycle welding robot is as follows: First, before the welding operation starts, the bicycle triangular frame needs to be fixed by the clamping component on the other side of the workbench 1. Initially, the right-angle frame is in the preset position and multiple joint clamps are in the open state. After the operator or another robot arm places the bicycle triangular frame in the preset clamping area, the drive motor starts and drives the right-angle frame to rotate around the preset axis, thereby adjusting the frame to the precise spatial angle that meets the welding process requirements. This step establishes a stable and reliable benchmark for subsequent precise welding. Second, after the frame is clamped in place, the control system drives the robotic arm 2 on one side of the workbench 1 to start working. The robotic arm 2, according to the pre-programmed welding path, precisely drives the welding torch 4 to the welding starting point through the end connector 3. During this process, the neck bend tube 5, nozzle 6 and various functional components inside the welding torch 4 are in a complete assembly state, ensuring that the welding process and anti-spatter function can be started immediately and normally. Third, firstly, the protective gas is injected through the gas source interface at the tail of the welding wire spool 53, entering the annular area outside the neck bend 5 between the outer ring sleeve 55 and the guide film ring 54. The gas is stably transported downward along the flow film groove on the guide film ring 54. After the protective gas flow reaches the release ring 56 at the lower end of the neck bend 5, it is guided to the radial circulation port 611 at the upper end of the isolation plate 61. It is important to note that the sealing contact between the release ring 56 and the upper end of the isolation plate 61 is crucial. It ensures that the protective gas does not leak upward, but is completely forced into the radial circulation port 611. After the protective gas passes through the radial circulation port 611, it enters the passage sleeve 101 of the flow channel assembly 10. At the end of the passage sleeve 101, the airflow encounters the airflow impact distribution valve composed of the guide sleeve 91 and the wind baffle ring 92, and is divided into two airflows, as follows: The first airflow, the main vibrating airflow, changes direction after being blocked by the wind deflector ring 92 and enters the inner cavity of the hollow cone ring sleeve 71; The second airflow center protection airflow passes through the gap between the wind deflector ring 92 and the inside of the guide sleeve 91, and continues downward to protect the end of the conductive nozzle 52 and the welding wire. When the first airflow enters the hollow conical ring 71, the protective airflow acts on the flutter plate 73 on the inner ring wall of the hollow conical ring 71 and the corresponding flow-blocking ring 74 behind it. The incoming protective airflow first impacts the flutter plate 73, and then some of the airflow hits the flow-blocking ring 74 and deflects back, forming disordered turbulence. This multi-directional and unstable turbulence repeatedly pushes and pulls the flutter plate 73 from both sides, exciting it to generate relatively high-frequency micro-amplitude mechanical vibration. This vibration is transmitted through the mounting base of the flutter plate 73, that is, the inner wall of the hollow conical ring 71, to the front area of ​​the inner wall of the hollow conical ring 71, making it a self-cleaning vibration surface. It should be noted that the hollow cone ring 71 is connected to the nozzle 6 through a flexible bushing on its outer wall. This flexible bushing can effectively absorb and isolate vibration, ensuring that high-frequency vibration is strictly limited inside the hollow cone ring 71 and will not be transmitted to the nozzle 6 body, thus ensuring the stability and precision of welding. At the same time, the second airflow forms a first protective air curtain around the conductive nozzle 52 to prevent air intrusion and initial adhesion of solder. After the first airflow completes the vibration excitation, it is ejected obliquely from the annular inclined port 72 at the lower part of the hollow conical ring 71, forming a second protective air curtain on the outermost side of the inner side of the nozzle 6. Even if welding spatter breaks through the air curtain protection and comes into contact with the inner wall of the hollow conical ring 71 which is vibrating at high frequency, it will fall off during vibration because it cannot adhere stably. The detached slag particles are eventually carried out of the nozzle 6 by the downward protective airflow of the inner and outer layers and will not accumulate inside. The dual action mechanism of vibration cleaning and airflow protection is effectively utilized to ensure the reliability of the anti-adhesion effect. As the final safeguard, the material blocking component 8 uses a baffle plate 82 to engage with the protrusion ring 81 via an embedded annular groove 83 on its back, and is fixed below the flow guide sleeve 91. Its function is to physically block the molten solder particles splashed from the welding pool. On the one hand, it prevents them from directly impacting and adhering to the structure of the rear flow guide sleeve 91 and the hollow conical ring sleeve 71. On the other hand, when the welding torch 4 needs to perform non-standard overhead welding or tilted operation, the baffle plate 82 can effectively block the backflow of molten solder that may occur due to gravity, and prevent liquid metal from flowing back into the airflow channel above. This ensures the feasibility and safety of welding in complex spatial postures. At the same time, as a low-cost and high-efficiency sacrificial safety line, it prioritizes the ability to withstand possible mechanical impacts and solder adhesion, avoiding irreversible damage to other structures. Secondly, in terms of thermal management, the heat generated during welding will accumulate in the conductive nozzle support 51 and the conductive nozzle 52. Therefore, the inner side of the multiple heat-conducting strips 102 in the flow channel assembly 10 is in close contact with the outer wall of the conductive nozzle support 51, which can absorb the heat and concentrate it on the heat-conducting strips 102 and the passage sleeve 101. The protective gas that is low in temperature and can be input at low temperature can continuously flow through the inside of the passage sleeve 101, which can simultaneously cool the passage sleeve 101 and the heat-conducting strips 102, and is also a further utilization of the protective gas supply. Fifth, and finally, either manually or with another robotic arm, the frame clamp is released to pick up the welded frame and remove the next fixture, thus completing the welding operation in the bicycle welding workshop.

[0040] Please see Figures 1-10The nozzle 6 is divided into an upper connecting cavity 62 and a lower mouth cavity 63 by an integrally formed isolation disc 61. The outer side of the isolation disc 61 is provided with radially distributed annular flow ports 611, and the middle of the isolation disc 61 is provided with an insertion hole 612. The lower end of the neck bend 5 is equipped with a conductive nozzle support 51, and the lower end of the conductive nozzle support 51 is equipped with a conductive nozzle 52. The neck bend 5, the conductive nozzle support 51 and the conductive nozzle 52 are coaxially connected from top to bottom to form a tubular component. The tubular component passes through the connecting cavity 62 and the insertion hole 612, so that the welding wire outlet end of the conductive nozzle 52 is suspended in the mouth cavity 63. In the preferred embodiment of this solution, by setting up a connecting cavity 62, a mouth cavity 63, a radial circulation port 611, and an insertion hole 612, the nozzle 6 and the isolation disc 61 are integrated, eliminating the seams of multi-component assembly, ensuring the rigidity and sealing of the structure, avoiding gas waste and reduced protection effect due to leakage. Secondly, the insertion hole 612 and the insertion fit of the tubular component provide precise axial and radial positioning for the conductive nozzle 52, effectively preventing the welding wire from jumping during welding, ensuring the uniformity and consistency of weld formation, and directly improving the welding quality. Meanwhile, this integrated structure establishes a uniform and symmetrical flow path for the protective gas, which enters the mouth cavity 63 from the connecting cavity 62 through the annularly distributed radial circulation port 611. This lays the structural foundation for forming a stable and dead-angle-free protective gas curtain in the welding area, and solves the problems of turbulent airflow inside the welding torch 4, inaccurate positioning of the conductive nozzle 52 leading to poor protection effect and welding wire vibration.

[0041] Please see Figure 5 , Figures 6-8 - Figure 10 The neck bend 5 includes a welding wire spool 53, a flow guide film ring 54 coaxially sleeved outside the welding wire spool 53, and an outer ring sleeve 55 coaxially sleeved outside the flow guide film ring 54; the flow guide film ring 54 is provided with annularly distributed flow film grooves, which constitute the flow channel of the protective gas; a release ring 56 is installed on the outer side of the lower end of the neck bend 5, the release ring 56 closely abuts against the upper end of the isolation disk 61, and its position is aligned with the upper port of the radial circulation port 611 to ensure that the protective gas flows smoothly through this channel.

[0042] Furthermore, a locking ring is installed on the neck bend 5, which is threaded to the upper end of the nozzle 6 to fix the neck bend 5 to the nozzle 6.

[0043] In the preferred embodiment of this scheme, by setting up a welding wire spool 53, a flow guide film ring 54 and an outer ring sleeve 55, the flow film grooves on the flow guide film ring 54 can efficiently rectify the protective gas, transforming it from disordered turbulent flow to ordered laminar flow, reducing flow resistance and pressure loss, and enabling a higher effective airflow velocity to be obtained under the same gas source pressure. Meanwhile, the planar sealing interface formed by the release ring 56 and the upper end of the isolation disc 61 not only completely eliminates the potential gas leakage hazard at the connection, but also achieves precise airflow guidance, ensuring that the gas can enter the radial circulation port 611 in a concentrated and efficient manner, avoiding energy dispersion. In addition, this multi-layered structure also plays a stable supporting role for the welding wire spool 53, further reducing potential interference during the welding wire transportation process, thereby solving the problems of turbulence and unstable flow field that are easily generated during the transportation of protective gas, as well as the problem of easy gas leakage at the interface between the neck bend 5 and the nozzle 6.

[0044] Secondly, the fixation of the neck bend 5 and the nozzle 6 can effectively resist vibrations of various directions and frequencies generated during the welding process for a long time, ensuring the connection rigidity of the core components and keeping the relative position of the neck bend 5 and the nozzle 6 unchanged, thereby stabilizing the relative position between the conductive nozzle 52 and the workpiece.

[0045] Please see Figures 5-8 The hollow cone ring sleeve 71 is equipped with an inner guide assembly 9 for secondary guiding of protective airflow in the middle. The inner guide assembly 9 includes a guide sleeve 91 and a baffle ring 92. The guide sleeve 91 is coaxially sleeved outside the conductive nozzle 52 and is connected to the inner cavity of the hollow cone ring sleeve 71. The baffle ring 92 is fixedly installed at the connection part of the air inlet at the rear end of the outer ring wall of the guide sleeve 91. When the protective airflow enters the rear end of the guide sleeve 91, it is blocked by the baffle ring 92 and diverted, and part of the airflow is guided to the inner cavity of the hollow cone ring sleeve 71.

[0046] In the preferred embodiment of this solution, by setting up a flow guide sleeve 91 and a wind deflector ring 92, the wind deflector ring 92 is used as a passive fluid distributor without moving parts, realizing dual use of one airflow. One part of the airflow is used to excite high-frequency vibration to achieve self-cleaning, while the other part focuses on central protection. Without increasing the complexity of the gas source and energy consumption, the functionality and comprehensive performance of the equipment are expanded. At the same time, when the two airflows after being split finally flow out of the nozzle 6, they actually form a gradient composite protective air curtain from the inside out. Its blocking effect on welding fumes and spatter is better than that of a single air curtain, further improving the purity of the gas protection in the welding area.

[0047] Please see Figure 7 The material blocking assembly 8 includes: a bump ring 81, which is installed on the outer wall of the flow guide sleeve 91; a baffle plate 82, which is disposed below the bump ring 81, and the rear end of the baffle plate 82 is provided with an embedded ring groove 83, which is engaged with the bump ring 81; and a disassembly hook hole 84, which is opened on the lower end face of the baffle plate 82.

[0048] In the preferred embodiment of this solution, by setting up a bump ring 81, a baffle plate 82, an embedded ring groove 83, and a disassembly hook hole 84, in conventional welding, the baffle plate 82, as the first physical defense line facing the molten pool, can effectively intercept some of the spatter moving towards it, preventing damage to the guide sleeve 91 and the hollow cone ring sleeve 71 at its upper end. Secondly, in special welding postures such as inverted tilt, the baffle plate 82 can effectively block the backflow of molten solder that may occur due to gravity, providing key safety assurance for welding operations in complex spatial postures. Meanwhile, the disassembly hook hole 84 located at the bottom of the baffle plate 82 allows operators to quickly disassemble the baffle plate 82 using a barb, ensuring the operational safety and long-term reliability of the entire nozzle 6 core structure with extremely low maintenance costs.

[0049] Please see Figure 7 and Figure 8 The conductive nozzle support 51 is provided with a flow channel assembly 10, which includes a passage sleeve 101 and heat-conducting strips 102. The conductive nozzle support 51 is provided with a passage sleeve 101. The upper end of the passage sleeve 101 is installed on the lower end face of the isolation plate 61, so that the internal flow channel of the passage sleeve 101 is connected to the radial circulation port 611 of the isolation plate 61, and its lower end opening is aligned with the air inlet at the rear end of the guide sleeve 91. Multiple heat-conducting strips 102 are equidistantly installed on the inner ring wall of the passage sleeve 101, and the inner ends of the heat-conducting strips 102 are in contact with the outer wall of the conductive nozzle support 51.

[0050] In the preferred embodiment of this solution, by setting up a passage sleeve 101 and heat-conducting strips 102, multiple heat-conducting strips 102 form a highly efficient heat conduction path surrounding the conductive nozzle support 51, which greatly increases the heat dissipation contact area and can quickly and evenly dissipate the accumulated heat. The low-temperature protective gas from the gas source flowing through the passage sleeve 101 acts as a continuous cooling airflow, which can carry away the heat on the heat-conducting strips 102 and the passage sleeve 101, thus achieving a certain cooling effect.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A kind of intelligent bicycle welding manipulator, including workbench (1), mechanical arm (2) being arranged in workbench (1) one side, the end of the mechanical arm (2) is equipped with link seat (3), welding torch (4) is installed on the link seat (3), the other side of the workbench (1) is equipped with the clamping component for clamping bicycle frame;It is characterized in that: The lower end of the welding torch (4) is equipped with neck bend pipe (5), the lower end of the neck bend pipe (5) is equipped with nozzle (6), the nozzle (6) is equipped with tremor prevent material component (7) in, the middle part of the tremor prevent material component (7) is equipped with resistance material component (8); The tremor prevent material component (7) includes: Hollow cone ring sleeve (71) coaxially arranged in the inner wall of the opening of nozzle (6) and annular flow bevel (72) opened in the lower part of the inner wall of hollow cone ring sleeve (71), the inner ring wall of the hollow cone ring sleeve (71) is annularly installed with multiple groups of flutter blades (73), the outer ring wall of the hollow cone ring sleeve (71) is equipped with resistance ring (74) corresponding to the axial rear of each group of flutter blades (73); When working, shielding gas flows into the hollow cone ring sleeve (71), and the flow field interacts with the flutter blades (73) and the resistance ring (74) to form a turbulent flow, excite the self-cleaning wall vibration of the inner wall of the hollow cone ring sleeve (71), and inhibit the attachment of welding molten splashes.

2. The intelligent bicycle welding robot as claimed in claim 1, wherein, The inside of the nozzle (6) is divided into upper intercommunication cavity (62) and lower nozzle cavity (63) by integral forming isolation disc (61); The outer side of the isolation disc (61) is provided with radially annular flow port (611), and the middle part of the isolation disc (61) is provided with extension hole (612); The lower end of the neck bend pipe (5) is equipped with conductive nozzle support (51), and the lower end of the conductive nozzle support (51) is equipped with conductive nozzle (52); The neck bend pipe (5), the conductive nozzle support (51) and the conductive nozzle (52) are coaxially connected from top to bottom to form a tubular part, the tubular part passes through the intercommunication cavity (62) and the extension hole (612), so that the welding wire outlet end of the conductive nozzle (52) is suspended in the nozzle cavity (63).

3. The intelligent robotic welding manipulator for bicycles of claim 2, wherein, The neck bend pipe (5) includes welding wire cylinder (53), flow film ring (54) coaxially sleeved outside the welding wire cylinder (53) and outer ring sleeve (55) coaxially sleeved outside the flow film ring (54); The flow film ring (54) is provided with annularly distributed flow film grooves, and the flow film grooves form the flow channel of the shielding gas; The lower end of the neck bend pipe (5) is equipped with release ring (56) on the outer side, the release ring (56) is in close contact with the upper end of the isolation disc (61), and the position thereof is aligned with the upper port of the radially annular flow port (611), so as to ensure that the shielding gas flow channel flows smoothly.

4. The intelligent bicycle welding robot as claimed in claim 3, wherein, The neck bend pipe (5) is equipped with locking ring, and the upper end of the locking ring is threadedly connected with the nozzle (6), so as to fix the neck bend pipe (5) on the nozzle (6).

5. The intelligent robotic welding manipulator for bicycles of claim 1, wherein, The middle part of the hollow cone ring sleeve (71) is equipped with inner sleeve flow guide component (9) for guiding the shielding gas, and the inner sleeve flow guide component (9) includes flow guide sleeve (91) and wind shield ring (92). The flow guide sleeve (91) is coaxially sleeved outside the conductive nozzle (52), and the flow guide sleeve (91) is in communication with the inner cavity of the hollow conical ring sleeve (71). The wind shield ring (92) is fixedly installed at the connecting position of the air inlet at the rear end of the outer ring wall of the flow guide sleeve (91); when the protection gas flow enters the rear end of the flow guide sleeve (91), the flow is divided by the wind shield ring (92) and part of the flow is guided to the inner cavity of the hollow conical ring sleeve (71).

6. The intelligent robotic welding manipulator for bicycles of claim 3, wherein, The material blocking assembly (8) comprises: The lug ring (81) is installed on the outer wall of the flow guide sleeve (91); The blocking plate (82) is arranged below the lug ring (81), and the rear end of the blocking plate (82) is provided with an embedded ring groove (83), and the embedded ring groove (83) is in clamping connection with the lug ring (81); The dismounting hook hole (84) is arranged on the lower end surface of the blocking plate (82).

7. The intelligent robotic welding manipulator for bicycles of claim 2, wherein, The flow channel assembly (10) is arranged outside the conductive nozzle support (51), and the flow channel assembly (10) comprises a passage sleeve (101) and a heat conduction strip (102). The passage sleeve (101) is arranged outside the conductive nozzle support (51), and the upper end of the passage sleeve (101) is installed on the lower end surface of the isolation disc (61), so that the internal flow channel of the passage sleeve (101) is in communication with the radial annular flow port (611) of the isolation disc (61), and the lower end opening is aligned with the air inlet at the rear end of the flow guide sleeve (91). A plurality of heat conduction strips (102) are equidistantly installed on the inner ring wall of the passage sleeve (101), and the inner side end portions of the heat conduction strips (102) are in contact with the outer wall of the conductive nozzle support (51).

8. The intelligent robotic welding manipulator of claim 1, wherein, The hollow conical ring sleeve (71) is connected with the inner wall of the nozzle (6) through the flexible bushing arranged on the outer wall thereof.

9. The intelligent robotic welding manipulator of claim 1, wherein, The clamping component comprises a driving motor, a right-angle frame driven to rotate by the driving motor, and a plurality of joint clamps installed on the right-angle frame, and the plurality of joint clamps are matched with each other to form a clamping position for fixing and clamping a bicycle triangular frame.

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