Welding platform for automobile part machining and welding method of welding platform

Abstract

The welding platform comprises a working platform horizontally mounted on the ground, a mounting seat is arranged on the upper surface of the working platform, a welding mechanical arm is rotatably mounted above the mounting seat, a supporting box of a square structure is fixedly mounted on the upper surface of the working platform, and a welding mechanical arm is rotatably mounted above the supporting box. A welding table is fixedly installed above the supporting box through bolts, and a welding workpiece is installed on the welding table through a fixing clamp. According to the welding platform for automobile part machining and the welding method of the welding platform, novel structural design is adopted, a conveying pump is started in the process that a welding mechanical arm is used for welding a welding workpiece, air in a filtering bin is conveyed into a water storage bin under the action of the conveying pump, and at the moment, negative pressure is formed in the filtering bin; smoke generated during welding is sucked into the filter bin through the through holes under the action of negative pressure, the filter plate in the filter bin is used for filtering the smoke, and therefore the smoke is exhausted after being purified.

Description

Technical Field

[0001] This invention relates to the field of automotive parts welding technology, specifically to a welding platform and welding method for automotive parts processing. Background Technology

[0002] An automotive parts welding platform is a specialized workbench or automated system designed to connect multiple automotive parts into a complete component through welding processes. It is a key piece of equipment in the automotive manufacturing industry chain, used by parts suppliers and OEMs on their production lines. It is a comprehensive tooling that integrates mechanical structure, positioning fixtures, welding equipment (such as welding torches), and a flexible control system.

[0003] As in the prior art, Chinese patent application number CN201810222844.9 discloses a welding platform for processing automotive parts, including a rotating platform, a support platform, a support vertical plate, a right rotating rod, and a clamping mechanism. The rotating platform is rotatably mounted on the support platform by a support slider fixedly welded to its bottom. A drive motor for driving the rotating platform to rotate is fixedly installed at the bottom middle part of the support platform. Support vertical plates are symmetrically fixedly welded to the top of the rotating platform. A left rotating rod is rotatably mounted on the support vertical plate located at the top left side of the rotating platform, and a right rotating rod is rotatably mounted on the support vertical plate located at the top right side of the rotating platform. Clamping mechanisms for clamping and fixing automotive parts are fixedly installed on both the right and left rotating rods.

[0004] For example, in the prior art, Chinese patent application number CN202011323954.8 discloses a welding fixture for automotive parts, including a welding platform. The bottom of the welding platform is provided with a base. By stepping on the pedal, the rack slides up and down in the slide groove, thereby driving the ratchet and ratchet sleeve to rotate. Furthermore, the first bevel gear is rotated through the connecting shaft and the second bevel gear. It can be seen that the toolbox can rotate around the rotation axis, allowing the user to select welding tools without moving their position, thus improving work efficiency.

[0005] For example, in the prior art, Chinese patent application number CN201910973643.7 discloses a welding table for automotive parts, including a welding platform, a vertical plate, a rotating sleeve, a mounting groove, a cylinder, a connecting plate, a hinge rod, a clamping block, a V-groove, a clamping space, and a pull rod. The cylinder actuates, causing the hinge rod to drive the parallel four-bar linkage mechanism to swing, causing the two clamping blocks to move relative to each other and clamp the shaft-type bulk parts. Due to the V-groove on the clamping block, the clamping effect of the shaft-type bulk parts is relatively stable when they are clamped, and they are not prone to self-rotation.

[0006] Based on the above information, it can be seen that existing welding platforms generally use fixtures to clamp workpieces before performing welding operations. However, in actual use, the high temperature of welding generates a large amount of fumes, which contain a large number of heavy metal particles and harmful substances. If not treated, these fumes can affect the health of surrounding workers. Summary of the Invention

[0007] The purpose of this invention is to provide a welding platform and welding method for processing automotive parts, so as to solve the problem of inconvenient welding fume treatment mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a welding platform for processing automotive parts, comprising a work platform horizontally installed on the ground, a mounting base provided on the upper surface of the work platform, and a welding robotic arm rotatably mounted above the mounting base; a square support box fixedly installed on the upper surface of the work platform, and a welding table fixedly installed above the support box using bolts; the welding table is fitted with welding workpieces via a fixing clamp; a matrix-distributed through hole is provided in the middle of the welding table; a filter chamber and a water storage chamber are provided inside the welding table; a horizontally arranged filter plate is fixedly installed inside the filter chamber; the through holes, the filter chamber, and the water storage chamber are connected by a negative pressure mechanism; a square movable plate is installed below the welding table, and the position of the movable plate corresponds to the position of the through hole; the movable plate and the welding table form a left-right sliding structure through an adjustment mechanism.

[0009] Preferably, a strong magnetic block is fixedly installed on the lower surface of the fixing fixture, and the strong magnetic block is magnetically attracted and fixed to the upper surface of the welding table.

[0010] Preferably, the negative pressure mechanism includes a negative pressure air pump fixedly installed on the upper surface of the work platform, and the negative pressure air pump is connected to the heat exchange pipe through a connecting pipe, and the heat exchange pipe is configured with a curved structure.

[0011] Preferably, the heat exchange pipe is attached to the lower surface of the filter plate, and a connecting pipe is fixedly installed between the filter chamber and the water storage chamber, and a delivery pump is fixedly installed outside the connecting pipe.

[0012] Preferably, the front end of the connecting pipe is connected to the mounting base, and the mounting base is connected to the pressurized nozzle fixedly installed at the front end of the welding robot arm.

[0013] Preferably, a flushing nozzle located above the filter plate is fixedly installed on the inner wall of the filter chamber, and the flushing nozzle is connected to the water storage tank through a delivery pipe.

[0014] Preferably, a lifting water pump is fixedly installed at the bottom of the conveying pipe, and a stirring blade is rotatably installed inside the water storage tank, with the position of the stirring blade corresponding to the position of the connecting pipe.

[0015] Preferably, the adjustment mechanism includes an adjustment screw rotatably mounted below the welding table and a guide slide rod fixedly mounted below the welding table. The adjustment screw is threadedly connected to the movable plate, and the guide slide rod is slidably connected to the movable plate. The adjustment screw is driven to rotate by a drive motor.

[0016] Preferably, a clearance groove is provided in the middle of the movable plate, and a backflush nozzle is fixedly installed inside the clearance groove. Furthermore, blower airbags are fixedly installed between the left and right sides of the movable plate and the inner wall of the welding table, and the blower airbags are connected to the backflush nozzles.

[0017] Preferably, a welding method for a welding platform used in automotive parts processing includes the following steps: S1. Preparation before welding: Confirm that the material and specifications of the parts to be welded are consistent with the drawings. Check the surface for severe rust, oil stains, paint and moisture. Select the correct welding wire according to the base material and welding method. Clean the welding platform surface to ensure that there is no welding slag, spatter and other debris. Check and verify that all positioning clamps, clamping arms and hydraulic cylinders are functioning properly to ensure that the parts can be stably and accurately fixed in the design position. S2. Welding: Follow the principle of symmetrical welding and segmented back welding to control and reduce welding deformation to the maximum extent. For symmetrical structures, alternate welding at symmetrical positions, divide long welds into several segments, and weld them in the opposite order to the welding direction. S3. Post-weld treatment: After the weld has cooled, use tools such as a slag hammer, wire brush, and angle grinder to remove the slag and spatter from the surface of the weld. For any welding deformation that occurs, mechanical straightening or local flame heating straightening is permitted. During straightening, excessive damage to the base material should be avoided.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the welding platform and welding method for processing automotive parts adopt a novel structural design, the specific details of which are as follows: 1. During the welding process of the welding robot arm, the delivery pump is turned on. Under the action of the delivery pump, the air in the filter chamber is delivered to the water storage chamber. At this time, a negative pressure is formed in the filter chamber. Under the action of the negative pressure, the fumes generated during welding are drawn into the filter chamber through the through hole. The filter plate in the filter chamber filters the fumes, thereby purifying the fumes before they are discharged. Furthermore, the flue gas entering the water storage tank comes into contact with the clean water in the tank, using the clean water to cool the flue gas. Then, the negative pressure air pump is turned on, and under the action of the negative pressure air pump, the cooled flue gas is drawn into the heat exchange pipe. The heat exchange pipe is used to cool the filter plate, reducing the impact of high temperature on the filter plate's filtration effect (welding slag will fall off the filter plate, and the welding slag has a certain temperature that will be transferred to the filter plate). Finally, the purified flue gas is sprayed out from the pressurized nozzle through the connecting pipe and mounting base, and the sprayed airflow blows off the welding slag attached to the welded workpiece.

[0019] 2. Regularly turn on the booster pump. Under the action of the booster pump, the clean water in the water storage tank is transported to the flushing nozzle through the delivery pipe. The flushing nozzle sprays clean water to rinse the lower surface of the filter plate. Since the flue gas will heat the clean water as it passes through, the heated clean water has a better cleaning effect.

[0020] 3. A movable plate is installed under the welding table. The adjustment screw is driven by the drive motor to rotate. The rotation of the adjustment screw, together with the guide slide, moves the movable plate left and right. This makes the clearance groove inside the movable plate correspond to the through holes at different positions. The movement of the movable plate moves synchronously with the welding. That is, wherever the welding point is moved, the movable plate moves the clearance groove to the same position, so that the through holes can more accurately adsorb the flue gas. Furthermore, as the movable plate moves left and right, it compresses the blower airbag. When the blower airbag is compressed, the air inside is ejected from the backflush nozzle (the movable plate is designed with a hollow structure, so that the blower airbag and the backflush nozzle are connected). The airflow ejected from the backflush nozzle is used to clear any blockages that may occur in the through hole. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the fixing fixture structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the support box of the present invention; Figure 4 This is a schematic diagram of the installation position of the pressurized nozzle of the present invention; Figure 5 This is a schematic diagram of the internal structure of the water storage tank of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram showing the positional relationship between the heat exchange pipe and the filter plate of the present invention; Figure 8 This is a schematic diagram of the flushing nozzle structure of the present invention; Figure 9 This is a schematic diagram of the lower surface structure of the welding station of the present invention; Figure 10 For the present invention Figure 9 Enlarged structural diagram at point B; Figure 11 This is a schematic diagram of the movable plate structure of the present invention.

[0022] In the diagram: 1. Working platform; 2. Mounting base; 3. Welding robotic arm; 4. Support box; 5. Welding table; 501. Through hole; 6. Welding workpiece; 7. Fixing fixture; 8. Strong magnetic block; 9. Filter chamber; 10. Water storage chamber; 11. Filter plate; 12. Connecting pipe; 13. Negative pressure air pump; 14. Pressurizing nozzle; 15. Heat exchange pipe; 16. Connecting pipe; 17. Transfer pump; 18. Stirring blade; 19. Flushing nozzle; 20. Transfer pipe; 21. Lifting water pump; 22. Movable plate; 23. Adjusting screw; 24. Guide slide bar; 25. Drive motor; 26. Clearance groove; 27. Backflush nozzle; 28. Blower airbag. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1: Please refer to Figures 1-7 To achieve the purpose of filtering and purifying welding fumes, this embodiment provides the following technical solution, specifically: a work platform 1 horizontally installed on the ground; a mounting base 2 is provided on the upper surface of the work platform 1; a welding robotic arm 3 is rotatably mounted above the mounting base 2; a square support box 4 is fixedly mounted on the upper surface of the work platform 1; a welding table 5 is fixedly mounted on the support box 4 using bolts; a welding workpiece 6 is mounted on the welding table 5 via a fixing clamp 7; a matrix-distributed through hole 501 is provided in the middle of the welding table 5; a filter chamber 9 and a water storage chamber 10 are provided inside the welding table 5; and a filter chamber 9 is fixedly mounted inside the filter chamber 9. A horizontally arranged filter plate 11 is provided. The filter chamber 9 and the water storage chamber 10 are connected by a negative pressure mechanism through the through hole 501. A strong magnetic block 8 is fixedly installed on the lower surface of the fixing fixture 7, and the strong magnetic block 8 is magnetically attracted and fixed to the upper surface of the welding table 5. The negative pressure mechanism includes a negative pressure air pump 13 fixedly installed on the upper surface of the working platform 1. The negative pressure air pump 13 is connected to the heat exchange pipe 15 through the connecting pipe 12. The heat exchange pipe 15 is set with a curved structure and fits against the lower surface of the filter plate 11. A connecting pipe 16 is fixedly installed between the filter chamber 9 and the water storage chamber 10, and a delivery pump 17 is fixedly installed on the outside of the connecting pipe 16.

[0025] When using the device, firstly, a suitable fixing clamp 7 is attached to the welding table 5 using a strong magnetic block 8. Then, the workpiece 6 is clamped and fixed using the fixing clamp 7. Next, the welding robotic arm 3 is activated to perform welding operations on the workpiece 6. During the welding process, the delivery pump 17 is activated. Under the action of the delivery pump 17 and the connecting pipe 16, the air in the filter chamber 9 is delivered to the water storage chamber 10. At this time, a negative pressure is formed inside the filter chamber 9. Under the action of the negative pressure, the welding fumes are drawn into the filter chamber 9 through the through hole 501. The fumes are filtered and purified by the filter plate 11 inside the filter chamber 9. The purified fumes then enter the water storage chamber 10 and... Clean water comes into contact with and is discharged in the form of bubbles. At the same time, the negative pressure air pump 13 is turned on. Under the action of the negative pressure air pump 13, a negative pressure is formed in the heat exchange pipe 15 in conjunction with the connecting pipe 12. Thus, the heat exchange pipe 15 draws in the flue gas discharged in the form of bubbles from the water storage tank 10 (the inlet height of the heat exchange pipe 15 is higher than the water level in the water storage tank 10). The heat exchange pipe 15 is used to cool the filter plate 11, reducing the impact of high temperature on the filtration effect of the filter plate 11. Finally, the purified flue gas enters the interior of the mounting base 2 through the connecting pipe 12, and is finally sprayed out from the pressurized nozzle 14 through the pipes inside the mounting base 2 and the welding robot arm 3. The sprayed airflow blows off the welding slag remaining on the welding workpiece 6.

[0026] Example 2: Please refer to Figure 8 In order to achieve the purpose of filtering and purifying welding fumes, this embodiment provides the following technical solution, which specifically discloses: the front end of the connecting pipe 12 is connected to the mounting base 2, and the mounting base 2 is connected to the pressurizing nozzle 14 fixedly installed at the front end of the welding robotic arm 3. A flushing nozzle 19 located above the filter plate 11 is fixedly installed on the inner wall of the filter chamber 9, and the flushing nozzle 19 is connected to the water storage chamber 10 through the conveying pipe 20. A lifting water pump 21 is fixedly installed at the bottom end of the conveying pipe 20, and a stirring blade 18 is rotatably installed inside the water storage chamber 10, and the position of the stirring blade 18 corresponds to the position of the connecting pipe 16.

[0027] After the device has been used for a period of time, the lifting water pump 21 is turned on. The lifting water pump 21 is used to transport the clean water in the water storage tank 10 to the flushing nozzle 19 through the conveying pipe 20. The sprayed clean water is used to rinse and clean the upper surface of the filter plate 11 (when the flue gas is discharged from the connecting pipe 16, the stirring blade 18 is blown to rotate, and the heat of the flue gas heats the clean water, thereby improving the subsequent cleaning effect of the clean water).

[0028] Example 3: Please refer to Figures 9-11In order to achieve the purpose of filtering and purifying welding fumes, this embodiment provides the following technical solution, specifically: A square-shaped movable plate 22 is installed below the welding table 5, and the position of the movable plate 22 corresponds to the position of the through hole 501. The movable plate 22 and the welding table 5 form a left-right sliding structure through an adjustment mechanism. The adjustment mechanism includes an adjustment screw 23 rotatably installed below the welding table 5 and a guide slide rod 24 fixedly installed below the welding table 5. The adjustment screw 23 is threadedly connected to the movable plate 22, and the guide slide rod 24 is slidably connected to the movable plate 22. The adjustment screw 23 is driven to rotate by a drive motor 25. An avoidance groove 26 is opened in the middle of the movable plate 22, and a backflush nozzle 27 is fixedly installed inside the avoidance groove 26. Blower air bags 28 are fixedly installed between the left and right sides of the movable plate 22 and the inner wall of the welding table 5. The blower air bags 28 are connected to the backflush nozzle 27.

[0029] During the welding process, the drive motor 25 under the welding table 5 is activated according to the change of welding position. The drive motor 25 drives the adjusting screw 23 to rotate. During the rotation of the adjusting screw 23, the movable plate 22 with its external through thread is moved left and right under the guidance of the guide slide rod 24, thereby adjusting the through hole 501 of the relief groove 26 corresponding to the welding position, so that the adsorption of flue gas is more precise. During the left and right movement of the movable plate 22, the blower air bag 28 on its side is squeezed. When the blower air bag 28 is squeezed, the air inside is discharged from the backflush nozzle 27 through the cavity inside the movable plate 22. The airflow discharged from the backflush nozzle 27 is used to clear any blockages that may occur in the through hole 501.

[0030] Example 4: This example provides a welding method for a welding platform, including the following steps: S1. Preparation before welding: Confirm that the material and specifications of the parts to be welded are consistent with the drawings. Check the surface for severe rust, oil stains, paint and moisture. Select the correct welding wire according to the base material and welding method. Clean the welding platform surface to ensure that there is no welding slag, spatter and other debris. Check and verify that all positioning clamps, clamping arms and hydraulic cylinders are functioning properly to ensure that the parts can be stably and accurately fixed in the design position. S2. Welding: Follow the principle of symmetrical welding and segmented back welding to control and reduce welding deformation to the maximum extent. For symmetrical structures, alternate welding at symmetrical positions, divide long welds into several segments, and weld them in the opposite order to the welding direction. S3. Post-weld treatment: After the weld has cooled, use tools such as a slag hammer, wire brush, and angle grinder to remove the slag and spatter from the surface of the weld. For any welding deformation that occurs, mechanical straightening (such as a jack or press) or local flame heating straightening is permitted. During straightening, excessive damage to the base material should be avoided.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding platform for processing automotive parts, comprising a work platform (1) horizontally mounted on the ground, wherein a mounting base (2) is provided on the upper surface of the work platform (1), and a welding robotic arm (3) is rotatably mounted above the mounting base (2), characterized in that, Also includes: The work platform (1) has a square support box (4) fixedly installed on its upper surface, and a welding table (5) is fixedly installed on the upper part of the support box (4) by bolts, and the welding table (5) is used to install the welding workpiece (6) by a fixing clamp (7). The welding table (5) has through holes (501) arranged in a matrix in the middle position, and the welding table (5) has a filter chamber (9) and a water storage chamber (10) inside. The filter chamber (9) has a filter plate (11) arranged horizontally fixedly installed inside. The through holes (501), the filter chamber (9) and the water storage chamber (10) are connected by a negative pressure mechanism. A square movable plate (22) is installed below the welding table (5), and the position of the movable plate (22) corresponds to the position of the through hole (501). The movable plate (22) and the welding table (5) form a left-right sliding structure through the adjustment mechanism.

2. The welding platform for processing automotive parts according to claim 1, characterized in that: The lower surface of the fixing fixture (7) is fixedly installed with a strong magnetic block (8), and the strong magnetic block (8) is magnetically attracted and fixed to the upper surface of the welding table (5).

3. The welding platform for automotive parts processing according to claim 2, characterized in that: The negative pressure mechanism includes a negative pressure air pump (13) fixedly installed on the upper surface of the working platform (1), and the negative pressure air pump (13) is connected to the heat exchange pipe (15) through the connecting pipe (12), and the heat exchange pipe (15) is configured as a curved structure.

4. The welding platform for processing automotive parts according to claim 3, characterized in that: The heat exchange pipe (15) is attached to the lower surface of the filter plate (11), and a connecting pipe (16) is fixedly installed between the filter chamber (9) and the water storage chamber (10), and a delivery pump (17) is fixedly installed outside the connecting pipe (16).

5. A welding platform for processing automotive parts according to claim 4, characterized in that: The front end of the connecting pipe (12) is connected to the mounting base (2), and the mounting base (2) is connected to the pressurized nozzle (14) fixedly installed at the front end of the welding robot arm (3).

6. A welding platform for processing automotive parts according to claim 5, characterized in that: The inner wall of the filter chamber (9) is fixedly installed with a flushing nozzle (19) located above the filter plate (11), and the flushing nozzle (19) is connected to the water storage chamber (10) through the delivery pipe (20).

7. A welding platform for processing automotive parts according to claim 6, characterized in that: A lifting water pump (21) is fixedly installed at the bottom of the conveying pipe (20), and a stirring blade (18) is rotatably installed inside the water storage tank (10), and the position of the stirring blade (18) corresponds to the position of the connecting pipe (16).

8. A welding platform for processing automotive parts according to claim 7, characterized in that: The adjustment mechanism includes an adjustment screw (23) rotatably mounted below the welding table (5) and a guide slide rod (24) fixedly mounted below the welding table (5). The adjustment screw (23) is threadedly connected to the movable plate (22), and the guide slide rod (24) is slidably connected to the movable plate (22). The adjustment screw (23) is driven to rotate by a drive motor (25).

9. A welding platform for processing automotive parts according to claim 8, characterized in that: The movable plate (22) has a clearance groove (26) in the middle, and a backflush nozzle (27) is fixedly installed inside the clearance groove (26). A blower airbag (28) is fixedly installed between the left and right sides of the movable plate (22) and the inner wall of the welding table (5). The blower airbag (28) is connected to the backflush nozzle (27).

10. A welding platform for processing automotive parts according to claim 9, characterized in that, The welding method for the welding platform was also disclosed, including the following steps: S1. Preparation before welding: Confirm that the material and specifications of the parts to be welded are consistent with the drawings. Check the surface for severe rust, oil stains, paint and moisture. Select the correct welding wire according to the base material and welding method. Clean the welding platform surface to ensure that there is no welding slag, spatter and other debris. Check and verify that all positioning clamps, clamping arms and hydraulic cylinders are functioning properly to ensure that the parts can be stably and accurately fixed in the design position. S2. Welding: Follow the principle of symmetrical welding and segmented back welding to control and reduce welding deformation to the maximum extent. For symmetrical structures, alternate welding at symmetrical positions, divide long welds into several segments, and weld them in the opposite order to the welding direction. S3. Post-weld treatment: After the weld has cooled, use tools such as a slag hammer, wire brush, and angle grinder to remove the slag and spatter from the surface of the weld. For any welding deformation that occurs, mechanical straightening (such as a jack or press) or local flame heating straightening is permitted. During straightening, excessive damage to the base material should be avoided.

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