Turnover welding equipment for agricultural mechanical support welding

Abstract

The invention relates to the technical field of industrial machine tools, and discloses an overturning welding device for agricultural mechanical support welding, which comprises a welding table, two groups of welding manipulators are arranged at the upper end of the welding table, an annular sliding rail is fixedly mounted at the upper end of the welding table, and a plurality of groups of fixed overturning assemblies are slidably mounted at the upper end of the annular sliding rail. A mechanical support is arranged at the upper end of the fixed overturning assembly, a discharging assembly is arranged at the lower end of the welding table, and when the fixed overturning assembly carries the mechanical support to move along the track, the fixed overturning assembly keeps a stable posture through a limiting structure on the straight section to complete single-side welding; the assembly is separated from limiting and is meshed with symmetrical racks on the inner side of a rail to achieve 180-degree overturning of forward rotation and backward rotation, built-in fan blades are synchronously driven to rotate through gear transmission, generated wind power directionally blows a welding seam area through an arc-shaped groove in a fixing plate, and the temperature of a welding seam and a heat affected area is rapidly reduced in combination with dead-corner-free heat exchange brought by overturning; and grain coarseness and thermal stress superposition are avoided.

Description

Technical Field

[0001] This invention relates to the field of industrial machine tool technology, and in particular to a flipping welding device for welding agricultural machinery supports. Background Technology

[0002] Welding, as an important metal joining process, is widely used in many fields such as machinery manufacturing, automobiles, and aerospace. With the continuous development of the manufacturing industry, the requirements for welding quality, efficiency and automation are getting higher and higher. In the workpiece flipping process of traditional welding equipment, most welding devices rely on manual operation, which not only consumes a lot of manpower, but also greatly reduces welding efficiency. According to industry statistics, when traditional welding equipment is used to manually flip workpieces, the auxiliary time for each welding operation accounts for 30%-40% of the total welding time on average, which is difficult to meet the needs of large-scale production.

[0003] Meanwhile, with the continuous growth of industrial demand and the continuous progress of technology, welding technology has gradually shifted from extensive operation to fine control. The problems of traditional welding technology's over-reliance on operator skills and its inability to adapt to environmental changes have become increasingly prominent, making it difficult to meet the requirements of modern manufacturing industry for welding precision and stability.

[0004] During the welding process, if the other side is welded directly without cooling after one side is completed, multiple problems will arise due to the continuous accumulation of heat input in the joint area, uneven stress distribution, and deterioration of microstructure properties. Regarding the above and existing related technologies, the inventors believe that the following defects often exist: Continuous welding causes the temperature of the weld and heat-affected zone to rise continuously, which can easily lead to excessively coarse metal grains and a significant decrease in the mechanical properties of the joint, such as strength and toughness. This is especially true for materials such as thick plates and high-carbon steel, where the thermal stress is constantly superimposed at high temperatures, which can easily cause through-cracks or aggravate welding deformation. When welding dissimilar metals, the stress caused by the difference in thermal expansion coefficients of the two materials in the uncooled state cannot be effectively released, which can lead to weld cracking or joint separation. Furthermore, continuous high temperatures may cause the weld pool to re-melt, destroying the integrity of the original metallurgical bond and producing defects such as porosity and slag inclusions. At the same time, due to uneven heating, key positioning parts such as mounting holes on the support are prone to displacement, ultimately resulting in poor welding quality stability, reduced product qualification rate, and even the need for rework and repair, increasing production costs and production cycle. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing technology has the disadvantage of welding the other side directly without cooling after welding, which will cause the continuous accumulation of heat input in the joint area, stress distribution imbalance and deterioration of the microstructure. To this end, we propose a flip welding device for welding agricultural machinery supports.

[0006] To achieve the above objectives, this application adopts the following technical solution: a rotating welding device for welding agricultural machinery supports, comprising a welding table, two sets of welding manipulators mounted on the upper end of the welding table, a connecting frame, an annular slide rail fixedly mounted on the upper end of the connecting frame, multiple sets of fixed rotating components slidably mounted on the upper end of the annular slide rail, a mechanical support mounted on the upper end of the fixed rotating components, a feeding component mounted on the lower end of the welding table, and a feeding component. The annular slide rail includes a lower slide rail and an upper slide rail, with a gap reserved between the lower slide rail and the upper slide rail. Both the lower slide rail and the upper slide rail are divided into straight tracks, S-shaped tracks, and... The semi-circular track has a limit strip located inside the straight track and the semi-circular track in the lower slide rail. The limit strip matches the fixed flipping component. A toothed chain is arranged around the outer side of the lower slide rail and meshes with the fixed flipping component. A semi-circular rack one is arranged on the inner arc surface of the S-shaped track. A semi-circular rack two is arranged symmetrically along the central axis of the S-shaped track. Both semi-circular rack one and semi-circular rack two mesh with the fixed flipping component. The fixed flipping component rotates 180° more on the semi-circular rack two than it rotates on the semi-circular rack one.

[0007] Preferably, four sets of fixing plates are fixedly installed on the connecting frame. A rotating plate is rotatably installed on one end of the fixing plate near the annular slide rail. Connecting blocks are rotatably installed on both the upper and lower ends of the rotating plate. The ends of the connecting blocks that are far apart from each other are fixedly connected to the connecting frame. A torsion spring is fixedly installed on the ends of the connecting blocks that are close to each other. One end of the rotating plate is slidably connected to the annular slide rail. An electromagnet is provided at the connection between the rotating plate and the annular slide rail.

[0008] Preferably, the upper slide rail is supported and fixed to the upper end of the lower slide rail by multiple sets of rotating plates, and the lower slide rail is fixedly connected to the connecting frame.

[0009] Preferably, the fixed flipping assembly includes a connecting slider, which is slidably connected to the lower slide rail and the upper slide rail. An L-shaped fixing plate is rotatably mounted on the upper end of the connecting slider, and a fixing member is provided on one side of the L-shaped fixing plate.

[0010] Preferably, a laser sensor is provided on one side of the connecting slider.

[0011] Preferably, two sets of drive motors are fixedly installed inside the connecting slider. Each drive motor has a rotating gear fixedly installed at its drive end. Both sets of rotating gears are rotatably connected to the connecting slider and mesh with a gear chain.

[0012] Preferably, two sets of rotating gears are rotatably installed inside the connecting slider. Both sets of rotating gears are located at the upper end of the drive motor. Rotating fan blades are fixedly installed at the upper end of the rotating gears via connecting columns. Two cavities are opened inside the connecting slider. The rotating fan blades are located inside the cavities. A connecting plate is rotatably installed at the upper end of the connecting slider. The connecting plate is connected to the cavities. The upper end of the connecting plate is fixedly connected to an L-shaped fixing plate.

[0013] Preferably, multiple sets of limiting posts are installed through the L-shaped fixing plate, and multiple sets of arc-shaped grooves are opened inside the limiting posts. The arc-shaped grooves are connected to the inside of the connecting plate, and the limiting posts are matched with the mechanical support.

[0014] Preferably, a connecting rod is fixedly installed at the lower end of the L-shaped fixing plate. The connecting rod passes through and connects the slider and the connecting plate and is fixedly installed with a rotating gear three. The rotating gear three meshes with two sets of rotating gear two. A rotating gear four is fixedly installed at the lower end of the rotating gear three. The rotating gear four meshes with a semi-annular rack one and a semi-annular rack two. A limit block is fixedly installed at the lower end of the rotating gear four. The limit block matches the limit strip.

[0015] Preferably, the feeding assembly includes a U-shaped connecting block, a second drive motor is fixedly installed at the upper end of the U-shaped connecting block, the driving end of the second drive motor passes through the U-shaped connecting block and a feeding roller is fixedly installed thereon, a fifth rotating gear is fixedly installed on the outer side of the driving end of the second drive motor, a gear belt is meshed on the outer side of the fifth rotating gear, another set of feeding assemblies is meshed on the other side of the gear belt, and one side of the U-shaped connecting block is fixedly connected to the connecting frame through an L-shaped connecting frame.

[0016] The technical effects and advantages of this invention are as follows: In this invention, the circular track integrates a straight welding section, an S-shaped flipping cooling section, and a transition section. When the fixed flipping component moves along the track with a mechanical support, it maintains a stable posture through a limiting structure in the straight section to complete single-sided welding. After entering the S-shaped section, the component disengages from the limiting structure and achieves a 180° flip by meshing with the symmetrical rack on the inner side of the track, first rotating forward and then in reverse. Simultaneously, the built-in fan blades are driven to rotate through gear transmission. The generated wind force blows directionally onto the weld area through the arc groove on the fixed plate. Combined with the heat exchange without dead angles brought about by the flipping, the temperature of the weld and heat-affected zone is quickly reduced, avoiding the superposition of coarse grains and thermal stress. After the flipping is completed, the component enters the straight section on the other side, allowing the unwelded surface of the support to be accurately aligned with the welding robot for secondary welding. At the same time, continuous cooling can prevent the remelting of the welded pool and the displacement of the mounting hole. In addition, the elastic avoidance design of the track support structure and the smooth exit structure of the unloading component further ensure the stability of the welding process and the quality of the finished product, effectively reducing defects such as cracks and porosity, and improving the welding qualification rate. Attached Figure Description

[0017] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the overall structure of the device of the present invention; Figure 2 This is a schematic diagram of the overall structure of the welding station of the present invention; Figure 3 This is a schematic diagram of the welding station structure of the present invention; Figure 4 This is an enlarged schematic diagram of Figure A of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the annular slide rail of the present invention; Figure 6 This is a schematic diagram of the planar structure of the annular slide rail of the present invention; Figure 7 This is a schematic diagram of the overall planar structure of the annular slide rail of the present invention; Figure 8 This is an enlarged schematic diagram of Figure B of the present invention; Figure 9 This is a schematic diagram of the fixed flipping component structure of the present invention; Figure 10 This is a schematic diagram of the planar structure of the fixed flipping component of the present invention; Figure 11 This is a schematic diagram of the internal structure of the connecting slider of the present invention; Figure 12 This is a schematic diagram of the feeding assembly structure of the present invention.

[0018] Legend: 1. Welding table; 11. Connecting frame; 111. Fixing plate; 112. Rotating plate; 113. Connecting block; 114. Torsion spring; 12. Circular slide rail; 121. Lower slide rail; 1211. Straight track; 1212. S-shaped track; 1213. Semi-circular track; 1214. Limiting strip; 1215. Semi-circular rack one; 1216. Semi-circular rack two; 122. Upper slide rail; 123. Toothed chain; 124. Gap; 13. Fixed flipping assembly; 131. Connecting slider; 1311. Drive motor one; 1312. Rotating gear one; 1313, Cavity; 1314, Connecting Plate; 1315, Rotating Gear II; 1316, Rotating Fan Blade; 132, Fixing Component; 133, L-shaped Fixing Plate; 1331, Connecting Rod; 1332, Rotating Gear III; 1333, Rotating Gear IV; 1334, Limiting Block; 1335, Limiting Post; 1336, Arc-shaped Groove; 14, Unloading Assembly; 141, U-shaped Connecting Block; 142, Drive Motor II; 143, Rotating Gear V; 144, Gear Belt; 145, Unloading Roller; 146, L-shaped Connecting Frame; 2, Welding Robot; 3, Mechanical Support. Detailed Implementation

[0019] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0020] Reference Figure 1 As shown, the present invention provides a technical solution: a flip welding device for welding agricultural machinery supports, including a welding table 1, and two sets of welding manipulators 2 are provided on the upper end of the welding table 1. The specific model of the welding manipulators 2 is Yaskawa MOTOMAN-MA1440.

[0021] Reference Figure 1-2 As shown in this embodiment: the welding table 1 includes a connecting frame 11, an annular slide rail 12 is fixedly installed on the upper end of the connecting frame 11, and multiple sets of fixed flipping components 13 are slidably installed on the upper end of the annular slide rail 12. A mechanical support 3 is placed on the upper end of the fixed flipping component 13, and a feeding component 14 is provided on the lower end of the welding table 1. This device is mainly used to weld the pre-treated mechanical support 3. During pre-treatment, the right-angled part and the triangular part of the mechanical support 3 are spot welded by the welding equipment. After cooling, the pre-treated mechanical support 3 is arc welded. When mechanical welding of the pre-treated mechanical support 3 is required... At that time, the mechanical support 3 is fixedly placed on the upper end of the fixed flipping assembly 13. The fixed flipping assembly 13 is activated to move on the annular slide rail 12. During the movement, one side of the mechanical support 3 is welded in sequence, and then flipped and cooled on the annular slide rail 12. Then the welding point on the other side of the mechanical support 3 is welded. After the welding is completed, it continues to move on the annular slide rail 12 for a period of time to cool. When the fixed flipping assembly 13 moves to the position of the unloading assembly 14, the fixation of the mechanical support 3 is released and the welded and cooled mechanical support 3 is unloaded through the unloading assembly 14.

[0022] Reference Figure 2-4As shown in this embodiment: four sets of fixing plates 111 are fixedly installed on the connecting frame 11. A rotating plate 112 is rotatably installed on one end of the fixing plate 111 near the annular slide rail 12. Connecting blocks 113 are rotatably installed on both the upper and lower ends of the rotating plate 112. The ends of the connecting blocks 113 that are far apart from each other are fixedly connected to the connecting frame 11. A torsion spring 114 is fixedly installed on the ends of the connecting blocks 113 that are close to each other. One end of the rotating plate 112 is slidably connected to the annular slide rail 12. An electromagnet is provided at the connection between the rotating plate 112 and the annular slide rail 12. The annular slide rail 12 is fixed to the upper end of the connecting frame 11 by the fixing plates 111. When the fixed flip assembly 13 moves to the position of the fixing plate 111, the laser sensor 13 on the upper end of the fixed flip assembly 13 is activated. 4. A position signal is sent to the processor. At this time, the electromagnet restriction between the rotating plate 112 and the annular slide rail 12 is released. When the fixed flip component 13 contacts the rotating plate 112, it will push the rotating plate 112 to rotate, so that the fixed flip component 13 passes through the fixed plate 111. When the fixed plate 111 and the fixed flip component 13 are no longer in contact, the fixed plate 111 is reset under the action of the torsion spring 114. The connection between the rotating plate 112 and the annular slide rail 12 is re-attracted by the electromagnet. The fixed flip component 13 moving on the annular slide rail 12 will not pass through the two sets of fixed plates 111 on the same side at the same time. Among the four sets of two pairs of opposing fixed plates 111, there are always two sets of opposing fixed plates 111 that fix the annular slide rail 12.

[0023] Reference Figure 2-3 , Figure 5 As shown in this embodiment: the annular slide rail 12 includes a lower slide rail 121 and an upper slide rail 122. A gap 124 is reserved between the lower slide rail 121 and the upper slide rail 122. The upper slide rail 122 is supported and fixed to the upper end of the lower slide rail 121 by multiple sets of rotating plates 112. The lower slide rail 121 is fixedly connected to the connecting frame 11. A toothed chain 123 is arranged around the outer side of the lower slide rail 121. The toothed chain 123 meshes with the fixed flipping assembly 13. The fixed flipping assembly 13 moves on the annular slide rail 12 along the toothed chain 123 arranged around the outer side of the lower slide rail 121.

[0024] Reference Figure 5-7As shown in this embodiment: both the lower slide rail 121 and the upper slide rail 122 are divided into a straight track 1211, an S-shaped track 1212, and a semi-circular track 1213. A limiting strip 1214 is provided on the inner side of the straight track 1211 and the semi-circular track 1213 in the lower slide rail 121. The limiting strip 1214 is fixedly connected to the upper surface of the lower slide rail 121. The limiting strip 1214 is used to prevent the fixed flipping assembly 13 from rotating when moving between the straight track 1211 and the semi-circular track 1213. During the movement of the fixed flipping assembly 13 on the circular slide rail 12, it first passes through the straight track 1211 to weld one side of the mechanical support 3. During this process, the fixed flipping assembly 13 is restricted by the limiting strip 1214 and maintains linear movement. After the welding of one side of the mechanical support 3 is completed, when it passes through the S-shaped track 1212, the fixed flipping assembly 13 releases the restriction of the limiting strip 1214, allowing the fixed flipping assembly 13 to move freely on the S-shaped track 1212. The rotating mechanism continuously generates airflow to cool the welding position of the mechanical support 3, rapidly reducing its temperature. Simultaneously, as the fixed rotating component 1 leaves the S-shaped track 1212 and enters the straight track 1211 on the other side, it rotates 180°, aligning the other side of the mechanical support 3 with the welding robot 2. This allows the welding robot 2 to quickly weld the other side of the mechanical support 3. After welding, the mechanical support 3, driven by the fixed rotating component 1, rotates along the annular slide rail 12 to the lower position. At this point, the right-angled side of the lower mechanical support 3 is opposite to the right-angled side of the upper mechanical support 3. The fixed rotating component 1 rotates and resets in the lower S-shaped track 1212. During this process, the fixed rotating component 1 also generates airflow to cool the welding position of the mechanical support 3, improving the weld tightness. After this process, the fixed rotating component 1 moves to the unloading component 14 for unloading.

[0025] Reference Figure 5-8As shown in this embodiment: a semi-annular rack 1215 is provided on the inner arc surface of the S-shaped track 1212. A semi-annular rack 2 1216 is centrally symmetrically arranged along the central axis of the S-shaped track 1212. The semi-annular rack 1215 and the semi-annular rack 2 1216 can be combined to form a complete annular rack. The semi-annular rack 1215 and the semi-annular rack 2 1216 mesh with the fixed flipping assembly 13. The fixed flipping assembly 13 rotates at an angle 180° greater on the semi-annular rack 2 1216 than on the semi-annular rack 1215. During the rotation of the fixed flipping assembly 13 within the S-shaped track 1212, it first... When the fixed rotating component 13 rotates in the same direction after meshing with the semi-annular rack 1215, the cooling effect on the leeward side may be poor. In this case, after the fixed rotating component 13 rotates forward after passing the semi-annular rack 1215, it disengages from the semi-annular rack 1215 and enters the meshing range of the semi-annular rack 2 1216. The semi-annular rack 2 1216 drives the fixed rotating component 13 to rotate in the opposite direction, reducing the impact of poor cooling effect on the leeward side. At the same time, through the action of the semi-annular rack 1215 and the semi-annular rack 2 1216, the fixed rotating component 13 is rotated 180°, so that the unwelded side of its upper mechanical support 3 faces the welding robot 2 for rapid welding.

[0026] Reference Figure 2 , 9 As shown in this embodiment: the fixed flipping assembly 13 includes a connecting slider 131, which is slidably connected to the lower slide rail 121 and the upper slide rail 122. An L-shaped fixing plate 133 is rotatably mounted on the upper end of the connecting slider 131. A fixing member 132 is provided on one side of the L-shaped fixing plate 133. The fixing member 132 consists of a bidirectional synchronous telescopic electric cylinder and two sets of clamping members. The two sets of clamping members are slidably connected to the L-shaped fixing plate 133. A laser sensor 134 is provided on one side of the connecting slider 131. The laser sensor 134 is a Keyence LR-X. When welding is required on the mechanical support 3, the bidirectional synchronous telescopic electric cylinder drives the two sets of clamping members to fix the mechanical support 3 on the upper end of the L-shaped fixing plate 133, and the laser sensor 134 detects the movement position of the connecting slider 131 in real time.

[0027] Reference Figure 9-10As shown in this embodiment: two sets of drive motors 1311 are fixedly installed inside the connecting slider 131. Each drive end of the drive motor 1311 is fixedly equipped with a rotating gear 1312. Both sets of rotating gears 1312 are rotatably connected to the connecting slider 131. The two sets of rotating gears 1312 mesh with the toothed chain 123. When the connecting slider 131 moves on the annular slide rail 12, the drive motors 1311 drive the two sets of rotating gears 1312 to rotate, so that the connecting slider 131 moves along the toothed chain 123 on the annular slide rail 12.

[0028] Reference Figure 9-11 As shown in this embodiment: two sets of rotating gears 1315 are rotatably installed inside the connecting slider 131. Both sets of rotating gears 1315 are located at the upper end of the drive motor 1311. Rotating fan blades 1316 are fixedly installed at the upper end of the rotating gears 1315 through connecting columns. Two cavities 1313 are opened inside the connecting slider 131. Rotating fan blades 1316 are located inside the cavities 1313. A connecting plate 1314 is rotatably installed at the upper end of the connecting slider 131. The connecting plate 1314 is connected to the cavity 1313. The upper end of the connecting plate 1314 is fixedly connected to the L-shaped fixing plate 133.

[0029] Reference Figure 9-11 As shown in this embodiment: multiple sets of limiting posts 1335 are installed through the L-shaped fixing plate 133. Multiple sets of arc-shaped grooves 1336 are opened inside the limiting posts 1335. The arc-shaped grooves 1336 are connected to the inside of the connecting plate 1314. The limiting posts 1335 are matched with the mechanical support 3.

[0030] Reference Figure 9-11As shown in this embodiment: A connecting rod 1331 is fixedly installed at the lower end of the L-shaped fixing plate 133. The connecting rod 1331 passes through the connecting slider 131 and the connecting plate 1314 and is fixedly installed with a rotating gear three 1332. The rotating gear three 1332 meshes with two sets of rotating gear two 1315. A rotating gear four 1333 is fixedly installed at the lower end of the rotating gear three 1332. The rotating gear four 1333 meshes with a semi-annular rack one 1215 and a semi-annular rack two 1216. A limit block 1334 is fixedly installed at the lower end of the rotating gear four 1333. The limit block 1334 matches the limit strip 1214. The connecting slider 131 is connected to the straight track 1211 and the semi-annular track 1334. During the movement on track 1213, the limiting block 1334 is restricted by the limiting strip 1214, causing the rotating gear 3 1332, rotating gear 4 1333, connecting rod 1331, and L-shaped fixing plate 133 inside the connecting slider 131 to remain stationary and move linearly along the limiting strip 1214. When the connecting slider 131 moves to the S-shaped track 1212, the limiting block 1334 releases the restriction of the limiting strip 1214. At the same time, rotating gear 4 1333 meshes with semi-annular rack 1 1215 and semi-annular rack 2 1216 in sequence, causing the L-shaped fixing plate 133 to first rotate in the forward direction under the drive of rotating gear 4 1333, and then... The rotating gear 1333 rotates in the opposite direction, and during this rotation, the rotating gear 1332 drives the rotating gear 1335 to rotate, which in turn drives the two sets of rotating gears 1315 to rotate. The rotating gears 1315 then drive the rotating fan blades 1316 to rotate continuously, generating a large amount of airflow. This airflow continuously blows along the connecting plate 1314 and the arc-shaped groove 1336 towards the welding position of the mechanical support 3 held in the L-shaped fixing plate 133. Simultaneously, because the L-shaped fixing plate 133 rotates in both directions within the S-shaped track 1212, the mechanical support 3 does not experience a decrease in cooling effect on the leeward side. The continuous rotation and the resulting airflow blowing onto the welding position of the mechanical support 3 ensure that... As the mechanical support 3 cools down faster, after the mechanical support 3 rotates 180° and moves to the straight track 1211 on the other side, when the welding robot 2 welds the other side, the process of blowing wind directly onto the welding connection part of the mechanical support 3 and the position of reverse temperature conduction can effectively reduce the stress of the welded parts in the uncooled state that cannot be effectively released, which can lead to weld cracking or joint separation. In addition, continuous high temperature may also cause the weld pool of the welded seam to be heated and melted again, destroying the integrity of the original metallurgical bond and producing defects such as porosity and slag inclusion. At the same time, due to uneven heating, key positioning parts such as mounting holes on the support are prone to positional displacement, ultimately leading to poor welding quality stability.

[0031] Reference Figure 2 , Figure 12As shown, in this embodiment: the feeding assembly 14 includes a U-shaped connecting block 141. A second drive motor 142 is fixedly installed on the upper end of the U-shaped connecting block 141. The driving end of the second drive motor 142 passes through the U-shaped connecting block 141 and is fixedly installed with a feeding roller 145. A fifth rotating gear 143 is fixedly installed on the outer side of the driving end of the second drive motor 142. A gear belt 144 is meshed on the outer side of the fifth rotating gear 143. Another set of feeding assemblies 14 is meshed on the other side of the gear belt 144. One side of the U-shaped connecting block 141 is connected by an L-shaped connecting frame. 146 is fixedly connected to the connecting frame 11. When the connecting slider 131 moves to the position of the unloading assembly 14, the fixing part 132 at the upper end of the connecting slider 131 is immediately released. The drive motor 142 is started to drive multiple sets of unloading rollers 145, giving the mechanical support 3 on the L-shaped fixing plate 133 a guiding force in the same direction of movement. The mechanical support 3 is removed from the L-shaped fixing plate 133. The soft unloading rollers 145 cushion the fall of the mechanical support 3 to a certain extent, reducing the damage caused by the rapid fall of the mechanical support 3.

[0032] Working principle: The pre-treated mechanical support 3 is fixed to the L-shaped fixed plate 133 by the fixing part 132 in the fixed flip assembly 13. The drive motor 1311 drives the rotating gear 1312 to mesh with the tooth chain 123 of the annular slide rail 12, so that the fixed flip assembly 13 moves along the straight track 1211 of the slide rail 121. During this process, it remains stable under the restriction of the limit bar 1214. The welding robot 2 on the welding table 1 completes the welding on one side of the mechanical support 3. Then the fixed flip assembly 13 enters the S-shaped track 1212, the limit block 1334 disengages from the limit bar 1214, and the rotating gear 1333 meshes with the semi-annular rack 1215 and the semi-annular rack 2 1216 in sequence. The L-shaped fixing plate 133 rotates forward and then reverses to achieve a 180° flip. At the same time, the rotating gear 1332 drives the rotating gear 1315 to drive the rotating fan blade 1316 to rotate. The wind blows through the arc groove 1336 of the connecting plate 1314 and the limiting post 1335 to cool the weld. After flipping, the fixed flipping component 13 enters the straight track 1211 on the other side. The welding robot 2 welds the other side of the mechanical support 3. Afterwards, it is cooled and reset again through the semi-circular track 1213 and the lower S-shaped track 1212. Finally, it moves to the unloading component 14. The fixing part 132 is released. The drive motor 142 drives the unloading roller 145 through the gear belt 144 to smoothly guide the mechanical support 3 out.

[0033] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A flipping welding device for welding agricultural machinery supports, characterized in that, The welding table includes a welding station, with two sets of welding robots installed at the upper end of the welding station. The welding station also includes a connecting frame, with an annular slide rail fixedly installed at the upper end of the connecting frame. Multiple sets of fixed flipping components are slidably installed at the upper end of the annular slide rail. A mechanical support is placed at the upper end of the fixed flipping components. A material unloading component is installed at the lower end of the welding station. The annular slide rail includes a lower slide rail and an upper slide rail, with a gap reserved between the lower slide rail and the upper slide rail. Both the lower slide rail and the upper slide rail are divided into straight tracks, S-shaped tracks and semi-annular tracks. A limit strip is provided on the inner side of the lower slide rail located on the straight track and the semi-annular track. The limit strip matches the fixed flipping assembly. A toothed chain is arranged around the outer side of the lower slide rail, and the toothed chain meshes with the fixed flipping assembly. A semi-annular rack one is provided on the inner arc surface of the S-shaped track. A semi-annular rack two is provided symmetrically along the central axis of the S-shaped track. Both the semi-annular rack one and the semi-annular rack two are engaged with the fixed flipping assembly. The fixed flipping assembly rotates 180° more on the semi-annular rack two than it rotates on the semi-annular rack one.

2. The flipping welding equipment for welding agricultural machinery supports according to claim 1, characterized in that: Four sets of fixing plates are fixedly installed on the connecting frame. A rotating plate is rotatably installed on one end of the fixing plate near the annular slide rail. Connecting blocks are rotatably installed on both the upper and lower ends of the rotating plate. The ends of the connecting blocks that are far apart from each other are fixedly connected to the connecting frame. A torsion spring is fixedly installed on the ends of the connecting blocks that are close together. One end of the rotating plate is slidably connected to the annular slide rail. An electromagnet is provided at the connection between the rotating plate and the annular slide rail.

3. The flipping welding equipment for welding agricultural machinery supports according to claim 2, characterized in that: The upper slide rail is supported and fixed to the upper end of the lower slide rail by multiple sets of rotating plates, and the lower slide rail is fixedly connected to the connecting frame.

4. The flipping welding equipment for welding agricultural machinery supports according to claim 1, characterized in that: The fixed flipping assembly includes a connecting slider, which is slidably connected to the lower slide rail and the upper slide rail. An L-shaped fixing plate is rotatably mounted on the upper end of the connecting slider, and a fixing member is provided on one side of the L-shaped fixing plate.

5. The flipping welding equipment for welding agricultural machinery supports according to claim 4, characterized in that: A laser sensor is provided on one side of the connecting slider.

6. The flipping welding equipment for welding agricultural machinery supports according to claim 4, characterized in that: Two sets of drive motors are fixedly installed inside the connecting slider. Each drive motor has a rotating gear fixedly installed at its drive end. Both sets of rotating gears are rotatably connected to the connecting slider and mesh with the gear chain.

7. The flipping welding equipment for welding agricultural machinery supports according to claim 6, characterized in that: The connecting slider has two sets of rotating gears rotatably mounted inside, both sets of rotating gears being located at the upper end of the drive motor. Rotating fan blades are fixedly mounted on the upper end of the rotating gears via connecting columns. The connecting slider has two cavities inside, with the rotating fan blades located inside the cavities. A connecting plate is rotatably mounted on the upper end of the connecting slider, and the connecting plate communicates with the cavities. The upper end of the connecting plate is fixedly connected to the L-shaped fixing plate.

8. The flipping welding equipment for welding agricultural machinery supports according to claim 7, characterized in that: Multiple sets of limiting posts are installed through the L-shaped fixing plate. Multiple sets of arc-shaped grooves are opened inside the limiting posts. The arc-shaped grooves are connected to the inside of the connecting plate. The limiting posts are matched with the mechanical support.

9. The flipping welding equipment for welding agricultural machinery supports according to claim 8, characterized in that: A connecting rod is fixedly installed at the lower end of the L-shaped fixing plate. The connecting rod passes through the connecting slider and the connecting disc and is fixedly installed with a rotating gear three. The rotating gear three meshes with two sets of rotating gear two. A rotating gear four is fixedly installed at the lower end of the rotating gear three. The rotating gear four meshes with the semi-annular rack one and the semi-annular rack two. A limit block is fixedly installed at the lower end of the rotating gear four. The limit block matches the limit strip.

10. The flipping welding equipment for welding agricultural machinery supports according to claim 1, characterized in that: The feeding assembly includes a U-shaped connecting block. A second drive motor is fixedly installed at the upper end of the U-shaped connecting block. The driving end of the second drive motor passes through the U-shaped connecting block and is fixedly installed with a feeding roller. A fifth rotating gear is fixedly installed on the outer side of the driving end of the second drive motor. A gear belt is meshed on the outer side of the fifth rotating gear. Another set of feeding assemblies is meshed on the other side of the gear belt. One side of the U-shaped connecting block is fixedly connected to the connecting frame through an L-shaped connecting frame.

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