Anti-deformation welding fixture and welding method

Abstract

The invention belongs to the technical field of welding tools, and particularly relates to a deformation-resistant welding fixture and a welding method.The deformation-resistant welding fixture comprises a workbench, a three-axis moving mechanism is installed on the workbench, and a welding head is installed on the three-axis moving mechanism; the clamping assembly comprises an adjusting part arranged on the bottom face of the workbench, a clamping part is arranged on the adjusting part, and a limiting part is arranged on the clamping part; and the auxiliary assembly comprises a refrigeration box, a liquid conveying part is arranged on the refrigeration box, a purification part is arranged on the bottom face of the workbench, an air draft part is arranged on the purification part, and a dust suction part is arranged above the workbench. According to the welding fixture with the cooling system, the clamping part can be effectively cooled in the welding process, the problems of deformation and material fatigue caused by high temperature are avoided, the clamping stability is ensured, the welding quality is improved, and the service life of the fixture is prolonged.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of welding fixtures, and particularly relates to a deformation-resistant welding fixture and a welding method. BACKGROUND

[0002] In the field of welding processing, fixtures are key equipment for ensuring the positioning accuracy of workpieces and the welding quality, and their performance directly affects the welding efficiency, precision and yield. Especially when high-strength welding operations are performed on metal workpieces, a large amount of heat is generated during the welding process, and the contact part of the fixture and the workpiece is prone to thermal deformation due to local high temperature, which further leads to a decrease in clamping stability, affecting the welding quality and even causing the workpiece to be scrapped.

[0003] Traditional welding fixtures mostly adopt fixed or mechanically adjustable structures, and only have basic clamping functions, lacking effective control means for thermal effects during the welding process. For example, a welding fixture is disclosed in Chinese patent document CN117139958A, which can achieve good clamping effect, but still has problems such as thermal expansion of clamping components and material fatigue during long-time welding, affecting the service life of the fixture and the welding consistency.

[0004] In addition, a large amount of smoke and harmful gases such as metal oxide particles and nitrogen oxides are generated during the welding process. If these substances are not treated in time, they not only pose a threat to the health of operators, but also may pollute the working environment and affect subsequent processing procedures. The welding fixtures in the prior art usually lack effective smoke purification systems or rely on external independent exhaust devices, which have problems such as complex structure, inconvenience to install, low purification efficiency, etc.

[0005] At the same time, with the increasing demand for product diversity and flexible production in modern manufacturing, traditional fixtures have poor adaptability when facing welding workpieces of different shapes and sizes, often requiring replacement of different fixtures or complex adjustments, which reduces production efficiency and increases equipment cost.

[0006] Therefore, it is urgent to provide a welding fixture with anti-thermal deformation capability, integrated cooling system and high-efficiency smoke purification function, and good versatility, to meet the actual needs of high-precision and high-efficiency welding processing. SUMMARY

[0007] The purpose of the present application is to provide a deformation-resistant welding fixture and a welding method, which can improve the welding quality and the service life of the fixture, purify the smoke, enhance the adaptability and flexibility of the equipment, and improve the production efficiency and the safety of the working environment.

[0008] The technical solutions adopted by the present application are as follows:

[0009] A deformation-resistant welding fixture comprises a workbench, a three-axis moving mechanism is installed on the workbench, and a welding head is installed on the three-axis moving mechanism;

[0010] A clamping assembly, the clamping assembly comprising an adjusting portion arranged on the bottom surface of the workbench, a clamping portion arranged on the adjusting portion, and a limiting portion arranged on the clamping portion;

[0011] An auxiliary component, the auxiliary component includes a refrigeration box, an infusion unit is provided on the refrigeration box, a purification unit is provided on the bottom surface of the workbench, an exhaust unit is provided on the purification unit, and an ash suction unit is provided above the workbench;

[0012] The adjusting part drives the clamping part to move to fix the workpiece to be welded, and the coolant is transported into the clamping part through the infusion part. During the process of transporting the coolant, the exhaust part is driven to operate, so that negative pressure is generated in the purification part, and the fume generated during welding is sucked into the purification part along the ash suction part, and then discharged after purification.

[0013] In a preferred embodiment, an electric push rod is fixedly mounted on the top surface of the workbench, and an upper end of the electric push rod is fixedly connected to a support plate.

[0014] In a preferred embodiment, the adjustment part includes two first fixed seats, both of which are fixedly connected to the bottom surface of the workbench, and two second fixed seats are also arranged next to the first fixed seat, and the second fixed seats are fixedly connected to the bottom surface of the workbench, the first fixed seat is rotatably connected to a rotating rod through a bearing, the second fixed seat is fixedly connected to a guide rod, two wire blocks are sleeved on the rotating rod, and the wire blocks are slidingly connected to the guide rod, the wire blocks are also connected to a return pipe, and the return pipe is connected to the refrigeration box, a servo motor is fixedly installed on the first fixed seat, and the output shaft of the servo motor is fixedly connected to the central rotating shaft of the rotating rod, the wire block is connected to a collecting pipe, and the collecting pipe is connected to the return pipe.

[0015] In a preferred embodiment, the clamping part includes a third fixed seat, the third fixed seat is fixedly connected to the wire block, a hollow rod is fixedly connected to the third fixed seat, the clamping block is rotatably connected to the hollow rod through a sealed bearing, a water outlet is provided on the front side of the hollow rod, one end of the hollow rod is connected to a water inlet pipe, a through hole is provided on the clamping block, liquid storage tanks are provided at both ends of the clamping block, and water inlet holes are provided at the ends of the two liquid storage tanks close to each other, a drain pipe is fixedly connected to the clamping block, and the drain pipe is connected to the liquid storage tank.

[0016] In a preferred embodiment, the limiting portion includes a limiting hole, the clamping block is provided with a limiting hole, the third fixing seat is fixedly connected with a fixing block, the fixing block is slidably plugged with a limiting column, and a spring is fixedly connected between the limiting column and the fixing block.

[0017] In a preferred embodiment, the infusion part includes a water pump, which is fixedly installed on the bottom surface of the refrigeration box, and the water pumping end of the water pump is connected to the refrigeration box, the drainage end of the water pump is connected to the infusion pipe, and the upper end of the infusion pipe is connected to the water inlet pipe.

[0018] In a preferred embodiment, the purification unit includes a hollow cylinder, which is fixedly connected to the bottom surface of the workbench, an exhaust pipe is fixedly connected to the hollow cylinder, and a filter is fixedly installed in the hollow cylinder.

[0019] In a preferred embodiment, the exhaust part includes a hollow shell, which is connected to an infusion tube, and the infusion tube is communicated with the hollow shell. A round rod is rotatably connected to the hollow shell through a sealed bearing, and the other end of the round rod extends into the hollow cylinder and is rotatably connected to the hollow cylinder. An impeller is fixedly installed at one end of the round rod, and a fan blade is fixedly installed at the other end of the round rod.

[0020] In a preferred embodiment, the dust suction part includes a slide rail, which is fixedly installed on the top surface of the workbench, and a slider is slidably connected to the slide rail, and a telescopic rod is fixedly connected to the slider, and a hollow column is fixedly connected to the telescopic rod, and the hollow column is connected to the exhaust pipe, and a dust hood is fixedly installed on the hollow column, and the dust hood is connected to the hollow column, and is fixedly connected to the welding head by a support rod.

[0021] A welding method for a deformation-resistant welding fixture comprises the following steps:

[0022] Step 1: Unlock the limiter first, and adjust the clamping end of the clamping part according to the shape of the workpiece to be welded, and then lock the limiter after adjustment;

[0023] Step 2: Control the adjustment part to adjust the position of the clamping part, and clamp the workpiece to be welded through multiple clamping parts;

[0024] Step 3: During the welding process, the infusion unit is started to pump coolant into the clamping unit to cool the clamping unit;

[0025] Step 4: The coolant flows and causes the exhaust section to operate. At this time, negative pressure is generated in the ash suction section and the purification section to extract the smoke generated during welding, and the smoke is purified in the purification section before being discharged.

[0026] The technical effects achieved by the present invention are:

[0027] The present invention designs a welding fixture with a cooling system, which can effectively cool the clamping part during the welding process, avoiding deformation and material fatigue caused by high temperature, ensuring clamping stability, improving welding quality, and extending the service life of the fixture;

[0028] The present invention integrates a set of highly efficient fume purification systems. Through the effective cooperation of the exhaust unit, purification unit and ash suction unit, the fume generated by welding can be quickly extracted and discharged after purification, which greatly reduces the harm of harmful substances to the health of operators and the pollution to the environment, creating a safer and cleaner working environment.

[0029] This invention utilizes an adjustable structural design, where a servo motor drives the rotation of a rotating rod to adjust the clamping position. The clamping blocks can be quickly switched based on the workpiece type (plate or tubular). This significantly enhances the versatility and flexibility of the equipment, reduces production setup time, and improves production efficiency. This design also simplifies the equipment structure and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0032] Figure 2 It is a bottom view of the overall structure of the present invention;

[0033] Figure 3 It is a structural schematic diagram of the clamping assembly of the present invention;

[0034] Figure 4 It is a structural schematic diagram of the clamping portion of the present invention;

[0035] Figure 5 This invention Figure 4 An enlarged schematic diagram of part A shown in FIG;

[0036] Figure 6 This invention Figure 4 sectional view of

[0037] Figure 7 It is a partial structural schematic diagram of the auxiliary components of the present invention;

[0038] Figure 8 This invention Figure 7 Bottom view of

[0039] Figure 9 Schematic diagram of the internal structure of the hollow shell and hollow cylinder of the present invention;

[0040] Figure 10 It is a structural schematic diagram of the telescopic rod of the present invention.

[0041] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0042] 1. Workbench; 2. Three-axis moving mechanism; 3. Welding head; 4. Clamping assembly; 5. Auxiliary assembly; 6. Electric push rod; 7. Support plate;

[0043] 41. Adjusting portion; 42. Clamping portion; 43. Limiting portion; 411. First fixing seat; 412. Rotating rod; 413. Second fixing seat; 414. Guide rod; 415. Wire block; 416. Return pipe; 417. Servo motor; 418. Collecting pipe; 421. Third fixing seat; 422. Hollow rod; 423. Clamping block; 424. Water outlet; 425. Water inlet pipe; 426. Through hole; 427. Liquid storage tank; 428. Water inlet hole; 429. Drain pipe; 431. Limiting hole; 432. Fixing block; 433. Limiting column; 434. Spring;

[0044] 51. Refrigeration box; 52. Infusion unit; 53. Purification unit; 54. Exhaust unit; 55. Ash suction unit; 521. Water pump; 522. Infusion tube; 531. Hollow cylinder; 532. Exhaust pipe; 533. Filter element; 541. Hollow shell; 542. Round rod; 543. Impeller; 544. Fan blade; 551. Slide rail; 552. Slider; 553. Telescopic rod; 554. Hollow column; 555. Dust hood. DETAILED DESCRIPTION

[0045] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments.

[0046] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0047] Please see the attached Figures 1 to 8FIG. 1 is a first embodiment of the present invention, which provides a deformation-resistant welding fixture, comprising a workbench 1, a three-axis moving mechanism 2 mounted on the workbench 1, and a welding head 3 mounted on the three-axis moving mechanism 2;

[0048] The clamping assembly 4 includes an adjusting portion 41 disposed on the bottom surface of the workbench 1 , a clamping portion 42 disposed on the adjusting portion 41 , and a limiting portion 43 disposed on the clamping portion 42 ;

[0049] Auxiliary component 5, the auxiliary component 5 includes a refrigeration box 51, an infusion unit 52 is provided on the refrigeration box 51, a purification unit 53 is provided on the bottom surface of the workbench 1, an exhaust unit 54 is provided on the purification unit 53, and an ash suction unit 55 is provided above the workbench 1;

[0050] The clamping part 42 is driven by the adjusting part 41 to move and fix the workpiece to be welded, and the coolant is transported into the clamping part 42 through the infusion part 52. During the process of transporting the coolant, the exhaust part 54 is driven to operate, so that negative pressure is generated in the purification part 53, and the fume generated during welding is sucked into the purification part 53 along the ash suction part 55, and then discharged after purification.

[0051] An electric push rod 6 is fixedly mounted on the top surface of the workbench 1 , and a support plate 7 is fixedly connected to the upper end of the electric push rod 6 .

[0052] In this embodiment, the three-axis moving mechanism 2 drives the welding head 3 to move for welding; when welding a plate-like workpiece, the electric push rod 6 can be controlled to extend and retract to drive the support plate 7 to move up and down, and the support plate 7 supports the bottom surface of the plate-like workpiece.

[0053] The three-axis moving mechanism 2 adopts the products currently available on the market. When selecting the model, it should be selected as much as possible to meet the requirements of this application under the premise of being suitable for the specifications and usage scenarios. The specific model specifications are not limited here.

[0054] Next, please refer to Figure 2 and Figure 3The adjusting part 41 includes two first fixed seats 411, and the two first fixed seats 411 are fixedly connected to the bottom surface of the workbench 1. Two second fixed seats 413 are also provided next to the first fixed seat 411, and the second fixed seat 413 is fixedly connected to the bottom surface of the workbench 1. The first fixed seat 411 is rotatably connected to the rotating rod 412 through a bearing, and the second fixed seat 413 is fixedly connected to the guide rod 414. Two wire blocks 415 are sleeved on the rotating rod 412, and the wire blocks 415 are slidably connected to the guide rod 414. The wire blocks 415 are also connected to the return pipe 416, and the return pipe 416 is connected to the refrigeration box 51. A servo motor 417 is fixedly installed on the first fixed seat 411, and the output shaft of the servo motor 417 is fixedly connected to the central rotating shaft of the rotating rod 412. A collecting pipe 418 is connected to the wire block 415, and the collecting pipe 418 is connected to the return pipe 416. The return pipe 416 adopts a retractable hose.

[0055] In this embodiment, two servo motors 417 are simultaneously activated to rotate the rotating rod 412. The rotation of the rotating rod 412 in turn drives the movement of the filament block 415. The filament block 415 and the guide rod 414 form a sliding structure, which can achieve position limiting and guiding functions, ensuring the stability of the movement of the filament block 415.

[0056] It should be noted that: threads in opposite directions are formed at both ends of the rotating rod 412 , and the rotating rod 412 is threadedly connected to the thread block 415 .

[0057] Secondly, please refer to Figures 3 to 6 The clamping portion 42 includes a third fixed seat 421, which is fixedly connected to the wire block 415. A hollow rod 422 is fixedly connected to the third fixed seat 421, and a clamping block 423 is rotatably connected to the hollow rod 422 through a sealed bearing. A water outlet 424 is provided on the front side of the hollow rod 422, and one end of the hollow rod 422 is connected to a water inlet pipe 425. A through hole 426 is provided on the clamping block 423, and liquid storage grooves 427 are provided at both ends of the clamping block 423. A water inlet hole 428 is provided at one end of the two liquid storage grooves 427 close to each other. A drain pipe 429 is fixedly connected to the clamping block 423, and the drain pipe 429 is connected to the liquid storage groove 427. The water inlet pipe 425 adopts a retractable hose.

[0058] In this embodiment, the movement of the wire block 415 forces the third fixed base 421 and the clamping block 423 thereon to approach each other, thereby clamping the workpiece to be welded. Furthermore, the clamping block 423 is rotatably connected to the hollow rod 422 of the third fixed base 421, allowing the clamping block 423 to rotate on the hollow rod 422. The clamping block 423 has a flat surface at one end and a V-shaped surface at the other. The flat surface is used to clamp plate-shaped welded parts, while the V-shaped surface is used to clamp tubular welded parts.

[0059] It is worth noting that the collecting pipe 418 is designed as a retractable hose and is equipped with a rubber ring at the upper end. The rubber ring is mounted on the drain pipe 429 to ensure a tight connection between the collecting pipe 418 and the drain pipe 429.

[0060] Next, please refer to Figure 4 and Figure 5 The limiting portion 43 includes a limiting hole 431, a limiting hole 431 is opened on the clamping block 423, a fixing block 432 is fixedly connected to the third fixing seat 421, a limiting column 433 is slidably inserted on the fixing block 432, and a spring 434 is fixedly connected between the limiting column 433 and the fixing block 432.

[0061] In this embodiment, first, the collection tube 418 is pulled downward to separate it from the drain pipe 429. Next, the limiting post 433 is pulled to disengage it from the limiting hole 431 on the clamping block 423, simultaneously stretching the spring 434. At this point, the clamping block 423 is no longer constrained and can be rotated to switch the clamping end. After the switch is completed, the limiting post 433 is released, and the restoring force of the spring 434 causes the limiting post 433 to return to its original position and insert into the limiting hole 431, thereby securing the clamping block 423. Finally, the collection tube 418 is pulled upward to reconnect it to the drain pipe 429.

[0062] Please refer again Figure 8 The infusion part 52 includes a water pump 521, which is fixedly installed on the bottom surface of the refrigeration box 51, and the water pumping end of the water pump 521 is connected to the refrigeration box 51, the drainage end of the water pump 521 is connected to the infusion pipe 522, and the upper end of the infusion pipe 522 is connected to the water inlet pipe 425.

[0063] In this embodiment, the water pump 521 is started to extract the coolant in the refrigeration box 51, and then the coolant is transported to the hollow rod 422 through the liquid delivery pipe 522 and the water inlet pipe 425. The coolant is discharged through the water outlet hole 424 on the hollow rod 422, and the water inlet hole 428 on the clamping block 423 corresponds to the water outlet hole 424, so that the coolant can flow into the liquid storage tank 427 on the clamping block 423 through the water outlet hole 424 and the water inlet hole 428. Finally, the coolant returns to the refrigeration box 51 through the drain pipe 429 and the return pipe 416, completing the cooling cycle. This circulating flow path cools the clamping block 423 through the circulation of the coolant, and continuously removes heat from the contact surface by using the principle of forced convection heat transfer, effectively avoiding material fatigue and thermal expansion deformation caused by long-term overheating of the clamping block 423, and preventing the surface oxide layer from falling off due to high temperature.

[0064] Since the hollow rod 422 is provided with the water outlet 424 only on one side, only the liquid storage tank 427 at the clamping end receives the coolant, thereby reducing the consumption of the coolant.

[0065] The function of the refrigeration box 51 is to store the coolant and cool the coolant. It uses products currently available on the market. When selecting a model, it should be selected as much as possible to meet the requirements of this application under the premise of being suitable for the specifications and usage scenarios. The specific model specifications are not limited here.

[0066] Please refer again Figures 7 to 9 The purification unit 53 includes a hollow cylinder 531 , which is fixedly connected to the bottom surface of the workbench 1 , an exhaust pipe 532 is fixedly connected to the hollow cylinder 531 , and a filter element 533 is fixedly installed in the hollow cylinder 531 .

[0067] In this embodiment, filter element 533 utilizes an activated carbon adsorption plate. With its powerful adsorption capacity, the activated carbon adsorption plate effectively captures and fixes tiny particles and harmful gases in the flue gas, such as metal oxides, nitrogen oxides, and other harmful substances generated during the welding process. Its porous structure significantly increases its contact area with the flue gas, improving purification efficiency. Furthermore, the activated carbon adsorption plate exhibits excellent regeneration properties. After a certain period of use, it can be regenerated through appropriate heat treatment to restore its adsorption capacity, thus achieving resource recycling and reducing operating costs. This design also facilitates replacement and maintenance, ensuring the continued efficient operation of the welding fixture.

[0068] The exhaust pipe 532 utilizes a retractable hose, allowing it to flexibly adapt to different welding positions and angles. As the welding head 3 moves, the retractable hose can freely expand and contract, ensuring effective fume extraction. Furthermore, the retractable hose is flexible and less susceptible to damage due to bending, extending its service life. This design not only enhances welding flexibility but also ensures the stability and reliability of the purification system.

[0069] Please refer again Figures 7 to 9 The exhaust part 54 includes a hollow shell 541, which is connected to the infusion tube 522, and the infusion tube 522 is communicated with the hollow shell 541. A round rod 542 is rotatably connected to the hollow shell 541 through a sealed bearing, and the other end of the round rod 542 extends into the hollow cylinder 531 and is rotatably connected to the hollow cylinder 531. An impeller 543 is fixedly installed at one end of the round rod 542, and a fan blade 544 is fixedly installed at the other end of the round rod 542.

[0070] Please refer again Figure 1 and Figure 10The dust suction part 55 includes a slide rail 551, which is fixedly installed on the top surface of the workbench 1. A slider 552 is slidably connected to the slide rail 551, and a telescopic rod 553 is fixedly connected to the slider 552. A hollow column 554 is fixedly connected to the telescopic rod 553, and the hollow column 554 is connected to the exhaust pipe 532. A dust hood 555 is fixedly installed on the hollow column 554, and the dust hood 555 is connected to the hollow column 554, and is fixedly connected to the welding head 3 by a support rod.

[0071] In this embodiment, when the coolant flows through the hollow shell 541, it effectively drives the rotation of the impeller 543. The rotation of the impeller 543 is then transmitted to the round rod 542, causing the round rod 542 to also start rotating. The rotational motion of the round rod 542 is in turn transmitted to the fan blades 544, causing the fan blades 544 to start rotating. The rotation of the fan blades 544 generates a negative pressure effect inside the hollow cylinder 531. This negative pressure effect is transmitted along the exhaust pipe 532 and the hollow column 554, and ultimately generates negative pressure at the position of the dust hood 555. It can effectively inhale the fume generated during the welding process. The inhaled fume is then filtered through the filter element 533 to remove harmful particles and impurities therein. The purified fume will eventually be discharged from one end of the hollow cylinder 531, ensuring a clean and safe working environment.

[0072] The welding head 3 is connected to the dust hood 555 by a support rod, so that the dust hood 555 can move synchronously with the welding head 3. When the welding head 3 is raised or lowered, the design of the telescopic rod 553 allows the dust hood 555 to be raised or lowered.

[0073] A welding method for a deformation-resistant welding fixture comprises the following steps:

[0074] Step 1: First, unlock the limiting portion 43 and adjust the clamping end of the clamping portion 42 according to the shape of the workpiece to be welded. After the adjustment, lock the limiting portion 43;

[0075] Step 2: Control the adjusting portion 41 to adjust the position of the clamping portion 42, and clamp the workpiece to be welded by the multiple clamping portions 42;

[0076] Step 3: During the welding process, the liquid infusion unit 52 is started to pump coolant into the clamping unit 42 to cool the clamping unit 42;

[0077] Step 4: The coolant flows and causes the exhaust unit 54 to operate. At this time, negative pressure is generated in the ash suction unit 55 and the purification unit 53 to extract the smoke generated during welding, and the smoke is purified in the purification unit 53 and then discharged.

[0078] The working principle of the present invention is:

[0079] The device drives the welding head 3 to perform precise welding operations through a three-axis moving mechanism 2, and at the same time uses the clamping assembly 4 to stably clamp the workpiece, and drives the clamping part 42 to move through the adjustment part 41 to adapt to workpieces to be welded of different shapes and sizes; during the clamping process, the clamping block 423 can rotate and switch the clamping end according to the type of workpiece (such as plate or tube), and the clamping block 423 is positioned and fixed by the limit part 43; during the welding process, the infusion part 52 transports the coolant in the refrigeration box 51 to the inside of the clamping part 42, and the coolant enters the liquid storage tank 427 of the clamping block 423 through the water outlet 424 of the hollow rod 422, forming forced convection heat exchange, effectively taking away the heat generated by the clamping block 423 due to high-temperature welding, and preventing the clamping block 423 from thermal deformation and material performance degradation; when the coolant refrigerates, it returns to the refrigeration box 51 through the refrigeration pipe 416 to complete the circulation cooling; at the same time, the coolant is driven during the flow of The impeller 543 in the exhaust section 54 rotates, driving the fan blades 544 to generate negative pressure in the purification section 53, so that the dust suction section 55 and the exhaust pipe 532 form an air flow channel, sucking in the smoke generated during the welding process and passing it through the filter element 533 (such as an activated carbon adsorption plate) in the purification section 53 for efficient purification, removing harmful particles and gases before discharge, thereby ensuring a clean working environment and the health of operators; in addition, the dust hood 555 of the dust suction section 55 moves synchronously with the welding head 3 through the support rod, and is flexibly followed by the telescopic rod 553 and the slide rail 551, ensuring that the smoke is extracted and discharged in a timely and effective manner; when welding plate-shaped workpieces, the electric push rod 6 can drive the support plate 7 to rise and fall, providing auxiliary support for the bottom of the workpiece, further improving welding stability and accuracy; the entire welding process realizes integrated integrated control with reliable clamping, efficient cooling, thorough dust removal, and flexible operation, which significantly improves welding quality and safety.

[0080] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0081] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A deformation-resistant welding fixture, characterized by: It comprises a workbench (1), a three-axis moving mechanism (2) is mounted on the workbench (1), and a welding head (3) is mounted on the three-axis moving mechanism (2); A clamping assembly (4), the clamping assembly (4) comprising an adjusting portion (41) arranged on the bottom surface of the workbench (1), a clamping portion (42) being arranged on the adjusting portion (41), and a limiting portion (43) being arranged on the clamping portion (42); An auxiliary component (5), the auxiliary component (5) comprising a refrigeration box (51), an infusion unit (52) being provided on the refrigeration box (51), a purification unit (53) being provided on the bottom surface of the workbench (1), an exhaust unit (54) being provided on the purification unit (53), and an ash suction unit (55) being provided above the workbench (1); The clamping portion (42) is driven by the adjusting portion (41) to move and fix the workpiece to be welded, and the cooling liquid is transported into the clamping portion (42) through the infusion portion (52). During the process of transporting the cooling liquid, the exhaust portion (54) is driven to operate, so that a negative pressure is generated in the purification portion (53), and the smoke generated during welding is sucked into the purification portion (53) along the ash suction portion (55), purified, and then discharged.

2. The deformation-resistant welding fixture according to claim 1, characterized in that: An electric push rod (6) is fixedly mounted on the top surface of the workbench (1), and a support plate (7) is fixedly connected to the upper end of the electric push rod (6).

3. The deformation-resistant welding fixture according to claim 1, characterized in that: The adjusting portion (41) includes two first fixing seats (411), both of which are fixedly connected to the bottom surface of the workbench (1), and two second fixing seats (413) are provided next to the first fixing seats (411), and the second fixing seats (413) are fixedly connected to the bottom surface of the workbench (1), the first fixing seats (411) are rotatably connected to a rotating rod (412) via a bearing, the second fixing seats (413) are fixedly connected to a guide rod (414), and the rotating rod (412) is sleeved with a guide rod (414). There are two wire blocks (415), and the wire blocks (415) are slidably connected to the guide rod (414). The wire blocks (415) are also connected to a return pipe (416), and the return pipe (416) is communicated with the refrigeration box (51). A servo motor (417) is fixedly installed on the first fixing seat (411), and the output shaft of the servo motor (417) is fixedly connected to the central rotating shaft of the rotating rod (412). The wire blocks (415) are connected to a collecting pipe (418), and the collecting pipe (418) is communicated with the return pipe (416).

4. The deformation-resistant welding fixture according to claim 3, characterized in that: The clamping portion (42) includes a third fixing seat (421), the third fixing seat (421) is fixedly connected to the wire block (415), a hollow rod (422) is fixedly connected to the third fixing seat (421), a clamping block (423) is rotatably connected to the hollow rod (422) via a sealed bearing, a water outlet (424) is provided on the front side of the hollow rod (422), one end of the hollow rod (422) is connected to a water inlet pipe (425), a through hole (426) is provided on the clamping block (423), both ends of the clamping block (423) are provided with liquid storage grooves (427), and the ends of the two liquid storage grooves (427) close to each other are provided with water inlet holes (428), a drain pipe (429) is fixedly connected to the clamping block (423), and the drain pipe (429) is connected to the liquid storage groove (427).

5. The deformation-resistant welding fixture according to claim 4, characterized in that: The limiting portion (43) includes a limiting hole (431), the clamping block (423) is provided with a limiting hole (431), the third fixing seat (421) is fixedly connected to a fixing block (432), the fixing block (432) is slidably connected to a limiting column (433), and a spring (434) is fixedly connected between the limiting column (433) and the fixing block (432).

6. The deformation-resistant welding fixture according to claim 4, characterized in that: The infusion unit (52) includes a water pump (521), the water pump (521) is fixedly mounted on the bottom surface of the refrigeration box (51), and a water pumping end of the water pump (521) is connected to the refrigeration box (51), a drainage end of the water pump (521) is connected to an infusion pipe (522), and an upper end of the infusion pipe (522) is connected to a water inlet pipe (425).

7. The deformation-resistant welding fixture according to claim 6, characterized in that: The purification section (53) comprises a hollow cylinder (531), the hollow cylinder (531) being fixedly connected to the bottom surface of the workbench (1), an exhaust pipe (532) being fixedly connected to the hollow cylinder (531), and a filter element (533) being fixedly installed in the hollow cylinder (531).

8. The deformation-resistant welding fixture according to claim 7, characterized in that: The exhaust portion (54) includes a hollow shell (541), the hollow shell (541) is connected to the infusion tube (522), and the infusion tube (522) is in communication with the hollow shell (541), a round rod (542) is rotatably connected to the hollow shell (541) via a sealed bearing, and the other end of the round rod (542) extends into the hollow cylinder (531) and is rotatably connected to the hollow cylinder (531), an impeller (543) is fixedly mounted on one end of the round rod (542), and a fan blade (544) is fixedly mounted on the other end of the round rod (542).

9. The deformation-resistant welding fixture according to claim 7, characterized in that: The dust suction part (55) includes a slide rail (551), the slide rail (551) is fixedly installed on the top surface of the workbench (1), a slider (552) is slidably connected to the slide rail (551), a telescopic rod (553) is fixedly connected to the slider (552), a hollow column (554) is fixedly connected to the telescopic rod (553), and the hollow column (554) is connected to the exhaust pipe (532), a dust hood (555) is fixedly installed on the hollow column (554), and the dust hood (555) is connected to the hollow column (554), and is fixedly connected to the welding head (3) by using a support rod.

10. A welding method using a deformation-resistant welding fixture according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: first unlock the limiting portion (43), and adjust the clamping end of the clamping portion (42) according to the shape of the workpiece to be welded, and then lock the limiting portion (43) after the adjustment; Step 2: controlling the adjustment portion (41) to adjust the position of the clamping portion (42), and clamping the workpiece to be welded by the plurality of clamping portions (42); Step 3: During the welding process, the liquid infusion unit (52) is started to pump coolant into the clamping unit (42) to cool the clamping unit (42); Step 4: The coolant flows and causes the exhaust section (54) to operate. At this time, negative pressure is generated at the ash suction section (55) and the purification section (53) to extract the smoke generated during welding, and the smoke is purified by the purification section (53) and then discharged.

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