Combined welding device for three metal parts

Abstract

The utility model discloses a combined welding device for three metal parts. The combined welding device comprises a driving rotating mechanism, a driven rotating mechanism, a part adsorption mechanism and a pressing mechanism. The center line of the driving rotating mechanism and the center line of the driven rotating mechanism are located on the same axis, the bottom end of the driving rotating mechanism is fixedly connected to the upper end face of the working machine table, the driven rotating mechanism comprises an adaptive tool and a driven fixing support, the cross section of the adaptive tool is circular, and the driven fixing support is fixedly connected to the upper end face of the working machine table. The driven fixing support is provided with a mounting hole penetrating in the horizontal direction, the adaptive tool is arranged in the mounting hole and rotationally connected with the driven fixing support, the bottom end of the driven fixing support is fixedly connected with a movable sliding block, and the movable sliding block is slidably connected with a movable guide rail. The movable guide rail is fixed to the upper end face of the working machine table. The combined welding device solves the technical problems that in the technical field of combined welding, three workpieces are difficult to weld, and the welding quality is poor.

Description

Technical Field

[0001] This utility model relates to the technical field of combined welding, specifically to a welding device for combining three metal parts. Background Technology

[0002] Welding, as a crucial manufacturing process, plays an indispensable role in industrial production. It is primarily used to permanently fasten components of metal or other materials together. The application of welding technology is wide-ranging, from small parts in everyday consumer goods to large building structures and heavy machinery. Different welding applications have different requirements for welding technology, but regardless of the field, the quality of the weld directly affects the overall performance and lifespan of the product.

[0003] Pre-assembled assemblies, meaning these components have been positioned and secured in the correct place before welding so that the welder can accurately weld on the mating surfaces, are a different scenario. However, another common practice is to place two unassembled parts directly together for welding. In this case, additional clamps or supports are needed to ensure the parts maintain the correct relative position during welding to avoid welding defects caused by movement.

[0004] When three or more parts are involved that are not pre-assembled, the complexity and challenge of the welding process increase significantly. First, positioning multiple parts to achieve the ideal contact surface is a huge challenge, as each part needs to be precisely placed and secured to ensure uniform welding across all joints. This necessitates the use of high-precision positioning devices and complex fixture systems to ensure that the position and angle of each part in three-dimensional space meet design requirements; any minute deviation can lead to asymmetry or instability in the entire structure. Second, in a mass production environment, the consistency and repeatability requirements for this multi-part welding are extremely high; any slight variation can cause fluctuations in the quality of the finished product. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a welding device for three metal parts, thereby solving the technical problems of difficulty in welding three workpieces and poor welding quality in the field of combined welding technology.

[0006] To achieve the above technical objectives, the present invention provides a welding device for assembling three metal parts, comprising:

[0007] The system includes an active rotating mechanism, a driven rotating mechanism, a parts adsorption mechanism, and a clamping mechanism. The centerlines of the active rotating mechanism and the driven rotating mechanism are on the same axis. The system includes an adapter fixture and a driven fixed bracket. The adapter fixture has a circular cross-section. The driven fixed bracket has a horizontally penetrating mounting hole. The adapter fixture is housed within the mounting hole and rotatably connected to the driven fixed bracket. A movable slider is fixedly connected to the bottom end of the fixed bracket. The movable slider is slidably connected to a movable guide rail, which is fixed to the upper surface of the machine tool.

[0008] Compared with the prior art, the beneficial effects of this utility model include:

[0009] 1. Multi-station synchronous operation: Welding three workpieces simultaneously greatly improves production efficiency and shortens the production cycle.

[0010] 2. Ensure welding quality: Since welding parameters and processes can be set and controlled uniformly, the welding quality of each workpiece is consistent, reducing the impact of human factors. Attached Figure Description

[0011] Figure 1 This is a front view of the three metal parts welding device provided by this utility model when it is not welded.

[0012] Figure 2 This is a front view structural diagram of the welding device for combining three metal parts provided by this utility model during welding.

[0013] Figure 3 This is a top view of the three-metal part welding device provided by this utility model.

[0014] Figure 4 This is a cross-sectional structural schematic diagram of the adapting tooling in the three-metal part combination welding device provided by this utility model. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0016] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0018] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 This embodiment provides a welding device for three metal parts, including: an active rotating mechanism 1, a driven rotating mechanism 2, a part adsorption mechanism 3, and a clamping mechanism 4.

[0019] In this embodiment, the first part 5 and the second part 6 are both stamped hollow cylinders, the second part 6 has through holes 6a around its perimeter, and the third part 7 is a circular solid sheet.

[0020] Furthermore, the center lines of the active rotating mechanism 1 and the driven rotating mechanism 2 are on the same axis, and the bottom end of the active rotating mechanism 1 is fixedly connected to the upper end face of the workbench 8.

[0021] Furthermore, the active rotation mechanism 1 adopts existing technology – a machine tool chuck. The machine tool chuck is a crucial component on a machine tool used to fix the workpiece, ensuring its stability during machining. A chuck typically consists of the following main parts: a body, jaws, a drive mechanism, a locking device, and an adjustment mechanism. The chuck body is a cylindrical structure with internal or external threads, used to connect to the machine tool spindle. The jaws are the moving parts on the chuck, responsible for directly contacting and clamping the workpiece. Depending on different needs, the jaws can be radially moving straight jaws or helical jaws moving along a spiral. The drive mechanism includes mechanical components such as worm gears and gears, used to convert rotational motion into linear motion of the jaws, thereby clamping or releasing the workpiece. The locking device is used to fix the position of the jaws, preventing them from loosening due to vibration or other reasons during machining. The adjustment mechanism allows the user to adjust the position of the jaws to accommodate workpieces of different sizes and shapes.

[0022] Furthermore, the gripper requires high precision consistency, ensuring that the circumferential and radial runout of the part after clamping is within a very small range, typically within 0.15mm. Runout detection can be performed using a standard part, which is the same size as the first part 5, with dimensional accuracy controlled within 0.01mm.

[0023] Furthermore, the driven rotation mechanism 2 includes an adapter fixture 21 and a driven fixed bracket 22. The adapter fixture 21 has a circular cross-section, and the driven fixed bracket 22 has a horizontally penetrating mounting hole. The adapter fixture 21 is housed in the mounting hole and rotatably connected to the driven fixed bracket 22. A movable slider 23 is fixedly connected to the bottom end of the driven fixed bracket 22, and a movable guide rail 24 is slidably connected to the movable slider 23. The movable guide rail 24 is fixed to the upper surface of the worktable 8.

[0024] Furthermore, a bearing is provided between the adapter tooling 21 and the driven fixed bracket 22 for the rotational connection between the adapter tooling 21 and the driven fixed bracket 22.

[0025] Furthermore, the movable guide rail 24 and the movable slider 23 are used for the movement of the driven rotating mechanism 2 in the horizontal direction, so that the driven rotating mechanism 2 moves away from or closer to the active rotating mechanism 1.

[0026] Furthermore, the design of the moving guide rail 24 and the moving slider 23 ensures that the driven rotating mechanism 2 performs very smooth and precise linear motion along a predetermined path. For welding processes, the active rotating mechanism 1 and the driven rotating mechanism 2 require high positioning accuracy, making the selection of the moving guide rail 24 and the moving slider 23 particularly important. The moving guide rail 24 and the moving slider 23 are made of high-quality materials with good wear resistance. Special surface treatment technologies (such as plating and hardening treatment) are used to treat their surfaces, further enhancing their durability and service life.

[0027] Furthermore, the adapter tooling 21 has an adsorption groove 211 and a gas flow channel 212 in the horizontal direction. The adsorption groove is connected to the gas flow channel. The cross-sectional diameter of the gas flow channel is smaller than the cross-sectional diameter of the adsorption groove. The adsorption groove and the gas flow channel pass through the adapter tooling.

[0028] Furthermore, the adsorption tank 211 includes a limiting section 2111, an enlargement section 2112, and a main body section 2113 that are interconnected. The cross-sectional diameter of the limiting section 2111 is equal to the outer diameter of the second part 6, and the cross-sectional diameter of the enlargement section 2112 gradually increases in the horizontal direction to the cross-sectional diameter of the main body section 2113.

[0029] Furthermore, the design of the limiting section 2111, the expanding section 2112, and the main body section 2113 minimizes the internal clearance space of the adapting tooling 21, thereby reducing the power requirement of the vacuum generator 32 in the part adsorption mechanism 3.

[0030] Furthermore, the inner diameter of the adapter tooling 21 of the driven rotating mechanism 2 is designed according to the outer diameter of the second part 6 to ensure that the second part 6 does not wobble significantly after being placed in, and to ensure that the flange part of the second part 6 cannot be inserted.

[0031] Furthermore, the flatness and roughness of the end face of the adapting tool 21 must ensure that the flange surface of the second part 6 fits tightly after placement.

[0032] Furthermore, the part adsorption mechanism 3 includes a rotary joint 31 and a vacuum generator 32.

[0033] Furthermore, the vacuum generator 32 is a device that uses compressed air to generate a vacuum. It is widely used in fields such as automated production, packaging, and semiconductor manufacturing. Its working principle is based on the Venturi effect, which is the phenomenon that the velocity of a fluid increases and the pressure decreases when the fluid passes through a narrow area.

[0034] Furthermore, the fixed end of the vacuum generator 32 is fixedly disposed on the end face of the workbench 8, the output end of the vacuum generator 32 is connected to the air pipe 33, the end of the air pipe 33 away from the vacuum generator 32 is connected to the rotary joint 31, and the end of the rotary joint 31 away from the vacuum generator 32 is connected to the gas flow channel 212 of the adapter tooling 21.

[0035] Furthermore, the second part 6 is barrel-shaped; the second part 6 has a through hole 6a; the third part 7 is disc-shaped.

[0036] Furthermore, when welding the first part 5, the second part 6, and the third part 7, the vacuum generator 32 is first activated to connect the adsorption tank 211 and the gas flow channel 212 for vacuuming. When the vacuum generator 32 is working, the second part 6 is placed in the adsorption tank 211. Since the second part 6 has a through hole 6a, a certain negative pressure is generated at the entrance of the second part 6 under the action of the vacuum generator 32. Then, the third part 7 is placed close to the entrance of the second part 6. Under the negative pressure condition, the third part 7 is adsorbed onto the second part 6.

[0037] Furthermore, the clamping mechanism 4 includes a clamping drive source 41, a buffer bracket 42, and a buffer unit 43. The fixed end of the clamping drive source 41 is disposed on the upper end face of the worktable 8. The worktable 8 is located on the side of the driven rotating mechanism 2 away from the active rotating mechanism 1. The output end of the clamping drive source 41 is fixedly connected to a clamping block 44.

[0038] Furthermore, the clamping drive source 41 is used to drive the driven rotating mechanism 2 away from or closer to the active rotating mechanism 1. One end of the output shaft of the clamping drive source 41 is fixedly connected to the clamping block 44, and the clamping block 44 is fixedly connected to one side of the driven fixed bracket 22. When the output shaft of the clamping drive source 41 extends, it drives the driven rotating mechanism 2 to move closer to the active rotating mechanism 1; when the output shaft of the clamping drive source 41 shortens, it drives the driven rotating mechanism 2 to move away from the active rotating mechanism 1.

[0039] Furthermore, the clamping drive source 41 is a pneumatic drive source, which has the following advantages in this embodiment: 1. Strong explosion-proof performance: the pneumatic system does not generate electric sparks, so it is safer to use in flammable and explosive environments; 2. Fast start-up: the pneumatic system can start and stop instantly, with a fast response speed; 3. Large output torque: the pneumatic system can provide large thrust and torque, and is suitable for heavy-duty operations.

[0040] Furthermore, the bottom end of the buffer bracket 42 is fixedly disposed on the upper end surface of the workbench 8, the buffer bracket 42 is disposed on the side of the driven rotating mechanism 2 close to the active rotating mechanism 1, and the upper end of the buffer bracket 42 is provided with the buffer unit 43. When welding is performed, the output end of the buffer unit 43 abuts against one side of the driven fixed bracket 22.

[0041] Furthermore, the buffer unit 43 is selected as a hydraulic buffer. In this embodiment, the hydraulic buffer has the following advantages: good buffering effect: the hydraulic buffer can effectively absorb and disperse impact energy, reduce the impact and vibration on mechanical equipment, extend the service life of the equipment, and by controlling the flow of hydraulic oil, the hydraulic buffer can achieve a smooth deceleration process, avoiding the impact caused by sudden stops; high stability: the physical properties of hydraulic oil are less affected by temperature, and the hydraulic buffer can maintain stable performance under different temperature environments. Hydraulic buffers are usually made of corrosion-resistant materials and can work normally in humid or dusty environments.

[0042] Furthermore, the buffer unit 43 also has a limiting function. When the buffering effect of the buffer unit 43 reaches its limit, it restricts further movement when the pressure driving source 41 pushes the driven rotating mechanism 2 to move towards the active rotating mechanism 1 to the working position. At the working position, the first part 5, the second part 6 and the third part 7 can be just close together.

[0043] Working Principle: This utility model provides a three-part welding device for metal parts, comprising: an active rotating mechanism 1, a driven rotating mechanism 2, a part adsorption mechanism 3, and a clamping mechanism 4. The driven rotating mechanism 2 includes an adapter fixture 21 and a driven fixed bracket 22. The adapter fixture 21 has a circular cross-section. The driven fixed bracket 22 has a horizontally penetrating mounting hole. The adapter fixture 21 is housed within the mounting hole and rotatably connected to the driven fixed bracket 22. A movable slider 23 is fixedly connected to the bottom end of the driven fixed bracket 22. A movable guide rail 24 is slidably connected to the movable slider 23 and fixed to the upper surface of the worktable 8. A bearing is provided between the adapter fixture 21 and the driven fixed bracket 22 for their rotatable connection. The movable guide rail 24 and the movable slider 23 are used for the horizontal movement of the driven rotating mechanism 2, allowing it to move away from or closer to the active rotating mechanism 1.

[0044] Specifically, when welding the first part 5, the second part 6, and the third part 7, the vacuum generator 32 operates to provide vacuum suction. First, the second part 6 is placed in the adsorption tank 211, and then the third part 7 is placed on the surface of the second part 6. The two are adsorbed and fixed under negative pressure. Second, the first part 5 is fixed using the claws, and the clamping drive source 41 is activated to push the driven rotation mechanism 2 to move towards the active rotation mechanism 1 to the working position, so that the first part 5, the second part 6, and the third part 7 can be just close together. Finally, the active rotation mechanism 1 is activated to drive the first part 5, the second part 6, and the third part 7 to rotate together, and welding is performed under the laser welding gun 9.

[0045] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A welding apparatus for assembling three metal parts, used for welding a first part, a second part, and a third part; characterized in that, include: The system includes an active rotating mechanism, a driven rotating mechanism, a part adsorption mechanism, and a clamping mechanism; the center lines of the active rotating mechanism and the driven rotating mechanism are on the same axis. The bottom end of the active rotation mechanism is fixedly connected to the upper end face of the workbench; the driven rotation mechanism includes an adapter fixture and a driven fixed bracket; the cross-section of the adapter fixture is circular; the driven fixed bracket has a horizontal through mounting hole; the adapter fixture is built into the mounting hole and rotatably connected to the driven fixed bracket; a movable slider is fixedly connected to the bottom end of the driven fixed bracket; the movable slider is slidably connected to a movable guide rail; the movable guide rail is fixed to the upper end face of the workbench.

2. The three-metal part assembly welding device according to claim 1, characterized in that, The adapter tooling has an adsorption tank and a gas flow channel in the horizontal direction; the adsorption tank and the gas flow channel are connected; the cross-sectional diameter of the gas flow channel is smaller than the cross-sectional diameter of the adsorption tank; the adsorption tank and the gas flow channel pass through the adapter tooling.

3. The three-metal part assembly welding device according to claim 2, characterized in that, The adsorption tank includes a limiting section, an enlarged section, and a main body section that are interconnected; the cross-sectional diameter of the limiting section is equal to the outer diameter of the second part; the cross-sectional diameter of the enlarged section gradually increases in the horizontal direction to the cross-sectional diameter of the main body section.

4. The three-metal part assembly welding device according to claim 3, characterized in that, The part adsorption mechanism includes a rotary joint and a vacuum generator; the fixed end of the vacuum generator is fixedly disposed on the end face of the workbench; the output end of the vacuum generator is connected to an air pipe; the end of the air pipe away from the vacuum generator is connected to the rotary joint; the end of the rotary joint away from the vacuum generator is connected to the gas flow channel of the adapting tooling.

5. The three-metal part assembly welding device according to claim 4, characterized in that, The clamping mechanism includes a clamping drive source, a buffer bracket, and a buffer unit; the fixed end of the clamping drive source is located at the upper end of the worktable; the worktable is located on the side of the driven rotating mechanism away from the active rotating mechanism; a clamping block is fixedly connected to the output end of the clamping drive source.

6. The three-metal part assembly welding device according to claim 5, characterized in that, The bottom end of the buffer bracket is fixedly mounted on the upper surface of the workbench; the buffer bracket is mounted on the side of the driven rotating mechanism close to the active rotating mechanism; the buffer unit is mounted on the upper end of the buffer bracket; when welding is performed, the output end of the buffer unit abuts against one side of the driven fixed bracket.

7. The three-metal part assembly welding device according to claim 6, characterized in that, The second part is barrel-shaped; the second part has a through hole; the third part is disc-shaped.

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