A turnover welding apparatus for welding an agricultural machine support

Abstract

The application relates to the technical field of industrial mother machines, and discloses a turnover welding device for welding of an agricultural machinery support, which comprises a welding table, two groups of welding mechanical arms are arranged at the upper end of the welding table, an annular sliding rail is fixedly installed at the upper end of the welding table, a plurality of groups of fixed turnover assemblies are slidably installed at the upper end of the annular sliding rail, a mechanical support is arranged at the upper end of each fixed turnover assembly, a discharging assembly is arranged at the lower end of the welding table, when the fixed turnover assembly carrying the mechanical support moves along the track, one-side welding is completed by keeping a stable posture through the limiting structure in the straight section, after entering the S-shaped section, the assembly is separated from the limiting structure and realizes 180 DEG turnover by being meshed with the symmetrical rack inside the track first, then reversely, synchronous rotation of the built-in fan blades is driven through the gear transmission, wind power generated by the fan blades is directed to blow the welding seam area through the arc-shaped groove on the fixed plate, heat exchange without dead angle brought by the turnover is combined, the temperature of the welding seam and the heat affected zone is rapidly reduced, and the superposition of coarse grains and thermal stress is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial mother machine, and particularly relates to a turnover welding device for welding of an agricultural machinery support. BACKGROUND

[0002] As an important metal connection process, welding is widely used in mechanical manufacturing, automobiles, aerospace and many other fields. With the continuous development of manufacturing industry, the requirements for welding quality, efficiency and automation degree are becoming higher and higher. In the workpiece turnover link of traditional welding equipment, most welding devices rely on manual operation, which not only consumes a lot of manpower, but also greatly reduces the welding efficiency. According to industry statistics, the auxiliary time of traditional welding equipment for each welding is 30%-40% of the total welding time under the condition of manual workpiece turnover, which is difficult to meet the needs of large-scale production.

[0003] At the same time, with the continuous growth of industrial demand and the continuous progress of technology, welding technology gradually changes from extensive operation to fine control. The excessive dependence of traditional welding technology on operator skills and the inadaptability to environmental changes are increasingly prominent, which is difficult to meet the requirements of modern manufacturing industry on welding precision and stability.

[0004] In the welding process, if one side is welded without cooling and the other side is directly welded, multiple problems will be caused due to the continuous accumulation of heat input in the joint area, the imbalance of stress distribution and the deterioration of organizational performance. For the above and existing related technologies, the inventors believe that the following defects often exist:

[0005] Continuous welding causes the temperature of the weld and the heat-affected zone to continuously rise, which easily causes the metal grains to be excessively coarse, and significantly reduces the mechanical properties such as joint strength and toughness, especially for materials such as thick plates and high-carbon steels. Under high temperature, the thermal stress is continuously superimposed, which easily causes penetrating cracks or aggravates welding deformation.

[0006] When welding dissimilar metals, the stress caused by the difference in thermal expansion coefficient of the two materials under the condition of no cooling cannot be effectively released, which will cause the weld to crack or the joint to separate. In addition, continuous high temperature may cause the molten pool of the welded weld to be reheated and melted again, which destroys the integrity of the original metallurgical bond, produces defects such as pores and slag, and at the same time, due to uneven overall heating, the key positioning parts such as mounting holes on the support are prone to position deviation, which eventually leads to poor welding quality stability, reduces the product qualification rate, and even needs to be repaired, increases the production cost and production cycle. SUMMARY

[0007] The technical problem to be solved by the present application is that in the prior art, after welding is completed, the other side is directly welded without cooling, which causes the continuous accumulation of heat input in the joint area, the imbalance of stress distribution and the deterioration of organizational performance. Therefore, we propose a turnover welding device for welding of an agricultural machinery support.

[0008] In order to achieve the above object, the technical scheme adopted by the present application is as follows: a kind of agricultural machinery support welding is overturned and welded equipment, including welding station, the upper end of welding station is provided with two groups of welding manipulator, welding station includes connecting frame, the upper end of connecting frame is fixedly installed with annular slide rail, the upper end of annular slide rail is slidably installed with multiple fixed overturning components, the upper end of fixed overturning component is placed with mechanical support, the lower end of welding station is provided with blanking component;

[0009] Annular slide rail includes lower slide rail and upper slide rail, gap is reserved between lower slide rail and upper slide rail, lower slide rail and upper slide rail are all divided into straight track, S-shaped track and half-ring track, limit strip is arranged in the inner side position of straight track and half-ring track in lower slide rail, limit strip is matched with fixed overturning component, the outside of lower slide rail is provided with sprocket chain, sprocket chain is engaged with fixed overturning component;

[0010] The inner side arc surface of S-shaped track is provided with half-ring rack one, half-ring rack one is centrally symmetrically provided with half-ring rack two along the central axis of S-shaped track, half-ring rack one and half-ring rack two are engaged with fixed overturning component, the angle that fixed overturning component rotates on half-ring rack two is more than 180 ° than the angle that fixed overturning component rotates on half-ring rack one;

[0011] Fixed overturning component includes connecting sliding block, connecting sliding block is slidably connected with lower slide rail and upper slide rail, the upper end of connecting sliding block is rotatably installed with L-shaped fixed plate, one side of L-shaped fixed plate is provided with fixing piece;

[0012] Two groups of driving motors one are fixedly installed in the inside of connecting sliding block, the driving end of driving motor one is fixedly installed with rotating gear one, two groups of rotating gear one are rotatably connected with connecting sliding block, two groups of rotating gear one are engaged with sprocket chain;

[0013] Two groups of rotating gear two are rotatably installed in the inside of connecting sliding block, two groups of rotating gear two are located at the upper end of driving motor one, rotating fan blade is fixedly installed on the upper end of rotating gear two through connecting column, two groups of cavities are formed in the inside of connecting sliding block, rotating fan blade is located in the inside of cavity, connecting disc is rotatably installed on the upper end of connecting sliding block, connecting disc is communicated with cavity, and the upper end of connecting disc is fixedly connected with L-shaped fixed plate;

[0014] Connecting rod is fixedly installed on the lower end of L-shaped fixed plate, connecting rod penetrates connecting sliding block and connecting disc and is fixedly installed with rotating gear three, rotating gear three is engaged with two groups of rotating gear two, rotating gear four is fixedly installed on the lower end of rotating gear three, rotating gear four is engaged with half-ring rack one and half-ring rack two, limit block is fixedly installed on the lower end of rotating gear four, and limit block is matched with limit strip.

[0015] Preferably, four groups of fixed plates are fixedly installed on the connecting frame, rotating plates are rotatably installed at one end of the fixed plate close to the annular slide rail, connecting blocks are rotatably installed at the upper and lower ends of the rotating plate, the ends of the connecting blocks away from each other are fixedly connected with the connecting frame, torsion springs are fixedly installed at the ends of the connecting blocks close to each other, one end of the rotating plate is slidably connected with the annular slide rail, and an electromagnet is arranged at the connecting position of the rotating plate and the annular slide rail.

[0016] Preferably, the upper slide rail is supported and fixed at the upper end of the lower slide rail through a plurality of rotating plates, and the lower slide rail is fixedly connected with the connecting frame.

[0017] Preferably, a laser sensor is arranged on one side of the connecting sliding block.

[0018] Preferably, a plurality of limiting columns are installed through the L-shaped fixed plate, a plurality of arc-shaped grooves are formed in the limiting columns, the arc-shaped grooves are in communication with the inside of the connecting disc, and the limiting columns are matched with the mechanical support.

[0019] Preferably, the blanking assembly comprises a U-shaped connecting block, a driving motor two is fixedly installed at the upper end of the U-shaped connecting block, a blanking roller is fixedly installed at the driving end of the driving motor two and penetrates the U-shaped connecting block, a rotating gear five is fixedly installed at the outer side of the driving end of the driving motor two, a gear belt is meshed and arranged at the outer side of the rotating gear five, another blanking assembly is meshed and arranged at the other side of the gear belt, and the U-shaped connecting block is fixedly connected with the connecting frame through an L-shaped connecting frame.

[0020] The technical effects and advantages of the present application are as follows:

[0021] In the present application, the annular track integrates the straight welding section, the S-shaped overturning cooling section and the transition section, when the fixed overturning assembly is moved along the track with the mechanical support, the stable posture is maintained in the straight section through the limiting structure to complete the single-sided welding, after entering the S-shaped section, the assembly is disengaged from the limiting and realizes the 180° overturning of the forward rotation and then the reverse rotation through the meshing with the symmetrical rack inside the track, the built-in fan blades are driven to rotate through the gear transmission, the wind force generated is directed to blow the weld area through the arc-shaped groove on the fixed plate, the heat exchange without dead angle is brought by the overturning, the temperature of the weld and the heat affected zone is quickly reduced, the grain coarsening and the superposition of thermal stress are avoided, after the overturning is completed, the assembly enters the other straight section, the non-welding surface of the support is accurately aligned with the welding robot for secondary welding, and the continuous cooling can prevent the remelting of the welded molten pool and the displacement of the mounting hole, in addition, the elastic avoidance design of the track support structure and the gentle leading-out structure of the blanking assembly further guarantee the stability of the welding process and the quality of the finished product, effectively reduce the defects such as cracks and pores, and improve the welding qualification rate. BRIEF DESCRIPTION OF DRAWINGS

[0022] The disclosure of the present application will be described with reference to the accompanying drawings. It should be appreciated that the drawings are for purposes of illustration only and are not intended to limit the scope of the present application. In the drawings, the same reference numerals are used to refer to the same components:

[0023] Figure 1 The overall structure of the device of the present application is shown schematically;

[0024] Figure 2 The overall structure of the welding table of the present application is shown schematically;

[0025] Figure 3 The partial structure of the welding table of the present application is shown schematically;

[0026] Figure 4 The enlarged schematic view of Figure A of the present application is shown;

[0027] Figure 5 The three-dimensional structure of the annular slide rail of the present application is shown schematically;

[0028] Figure 6 The planar partial structure of the annular slide rail of the present application is shown schematically;

[0029] Figure 7 The overall planar structure of the annular slide rail of the present application is shown schematically;

[0030] Figure 8 The enlarged schematic view of Figure B of the present application is shown;

[0031] Figure 9 The structure of the fixed overturning assembly of the present application is shown schematically;

[0032] Figure 10 The planar structure of the fixed overturning assembly of the present application is shown schematically;

[0033] Figure 11 The internal structure of the connecting sliding block of the present application is shown schematically;

[0034] Figure 12 The structure of the blanking assembly of the present application is shown schematically.

[0035] Legend: 1, welding table; 11, connecting frame; 111, fixed plate; 112, rotating plate; 113, connecting block; 114, torsional spring; 12, annular slide rail; 121, lower slide rail; 1211, straight track; 1212, S-shaped track; 1213, semi-annular track; 1214, limiting strip; 1215, semi-annular rack one; 1216, semi-annular rack two; 122, upper slide rail; 123, toothed chain; 124, gap; 13, fixed turnover assembly; 131, connecting sliding block; 1311, drive motor one; 1312, rotating gear one; 1313, cavity; 1314, connecting disc; 1315, rotating gear two; 1316, rotating fan blade; 132, fixing piece; 133, L-shaped fixed plate; 1331, connecting rod; 1332, rotating gear three; 1333, rotating gear four; 1334, limiting block; 1335, limiting column; 1336, arc-shaped groove; 14, blanking assembly; 141, U-shaped connecting block; 142, drive motor two; 143, rotating gear five; 144, gear belt; 145, blanking roller; 146, L-shaped connecting frame; 2, welding manipulator; 3, mechanical support. DETAILED DESCRIPTION

[0036] It is easy to understand that those skilled in the art can propose various structural modes and implementation modes that can be replaced with each other without changing the essential spirit of the present application. Therefore, the following detailed description and the accompanying drawings are only exemplary descriptions of the technical solutions of the present application, and should not be regarded as the whole or regarded as the limitation or restriction of the technical solutions of the present application.

[0037] Reference Figure 1 As shown in the drawings, the present application provides a technical solution: a turnover welding device for welding agricultural mechanical support, comprising a welding table 1, the upper end of the welding table 1 is provided with two groups of welding manipulators 2, the specific model of the welding manipulator 2 is Yaskawa MOTOMAN-MA1440.

[0038] Reference Figures 1-2As shown, in the embodiment: the welding table 1 comprises a connecting frame 11, the upper end of the connecting frame 11 is fixedly installed with an annular slide rail 12, the upper end of the annular slide rail 12 is slidably installed with a plurality of groups of fixed overturning assemblies 13, the upper end of the fixed overturning assembly 13 is provided with a mechanical support 3, and the lower end of the welding table 1 is provided with a discharging assembly 14. The device mainly welds the pretreated mechanical support 3. During pretreatment, the right-angle part and the triangular part of the mechanical support 3 are spot welded by a welding device. After cooling, the pretreated mechanical support 3 is arc welded. When the pretreated mechanical support 3 needs to be mechanically welded, the mechanical support 3 is fixedly arranged at the upper end of the fixed overturning assembly 13. The fixed overturning assembly 13 is moved on the annular slide rail 12 by starting. During the movement, one side of the mechanical support 3 is welded in turn. After the welding, the mechanical support 3 is overturned and cooled on the annular slide rail 12. Then, the other side of the mechanical support 3 is welded. After the welding is completed, the mechanical support 3 is cooled for a period of time by continuously moving on the annular slide rail 12. When the fixed overturning assembly 13 moves to the position of the discharging assembly 14, the mechanical support 3 is released and discharged by the discharging assembly 14 after being welded and cooled.

[0039] Referring to Figures 2-4 As shown, in the embodiment: the connecting frame 11 is fixedly installed with four groups of fixed plates 111. The end of the fixed plate 111 close to the annular slide rail 12 is rotatably installed with a rotating plate 112. The upper and lower ends of the rotating plate 112 are rotatably installed with connecting blocks 113. The ends of the connecting blocks 113 away from each other are fixedly connected with the connecting frame 11. The ends of the connecting blocks 113 close to each other are fixedly installed with torsion springs 114. One end of the rotating plate 112 is slidably connected with the annular slide rail 12. The connection between the rotating plate 112 and the annular slide rail 12 is provided with an electromagnet. The annular slide rail 12 is fixed at the upper end of the connecting frame 11 through the fixed plate 111. When the fixed overturning assembly 13 moves to the position of the fixed plate 111, the laser sensor 134 at the upper end of the fixed overturning assembly 13 sends a position signal to the processor. At this time, the electromagnet between the rotating plate 112 and the annular slide rail 12 is released. When the fixed overturning assembly 13 contacts the rotating plate 112, the rotating plate 112 is pushed to rotate, so that the fixed overturning assembly 13 passes through the fixed plate 111. When the fixed plate 111 is not in contact with the fixed overturning assembly 13, 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 overturning assembly 13 moving on the annular slide rail 12 does not pass through the same side of the two groups of fixed plates 111 at the same time. Among the four groups of opposite fixed plates 111, two groups of opposite fixed plates 111 always fix the annular slide rail 12.

[0040] Referring to Figures 2-3 , Figure 5As shown, in the embodiment: the ring-shaped 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 on the upper end of the lower slide rail 121 through a plurality of groups of rotating plates 112, the lower slide rail 121 is fixedly connected with the connecting frame 11, the outer side of the lower slide rail 121 is provided with a toothed chain 123, the toothed chain 123 is engaged with the fixed overturning assembly 13, and the fixed overturning assembly 13 moves along the toothed chain 123 provided around the outer side of the lower slide rail 121 on the ring-shaped slide rail 12.

[0041] With reference to Figures 5-7 As shown, in the embodiment: the lower slide rail 121 and the upper slide rail 122 are each divided into a straight rail 1211, an S-shaped rail 1212 and a semi-ring-shaped rail 1213, a limiting strip 1214 is arranged at the inner side position of the straight rail 1211 and the semi-ring-shaped rail 1213 in the lower slide rail 121, the limiting strip 1214 is fixedly connected with the upper surface of the lower slide rail 121, the limiting strip 1214 is used for limiting the fixed overturning assembly 13 from rotating when moving between the straight rail 1211 and the semi-ring-shaped rail 1213, in the moving process of the fixed overturning assembly 13 on the ring-shaped slide rail 12, the fixed overturning assembly 13 first passes through the straight rail 1211 to weld one side of the mechanical support 3, in this process, the fixed overturning assembly 13 is limited by the limiting strip 1214 to keep straight-line movement, after the welding of one side of the mechanical support 3 is completed, when passing through the S-shaped rail 1212, the fixed overturning assembly 13 is no longer limited by the limiting strip 1214, so that the fixed overturning assembly 1 continuously overturns in the S-shaped rail 1212 and generates wind force to blow the welding position of the mechanical support 3, the welding position of the mechanical support 3 is rapidly cooled, at the same time, when the fixed overturning assembly 1 leaves the S-shaped rail 1212 to enter the straight rail 1211 on the other side, the direction of the fixed overturning assembly 1 is rotated by 180°, aligning the other side of the mechanical support 3 with the welding robot 2, so that the welding robot 2 can rapidly weld the other side of the mechanical support 3, after the welding is completed, the mechanical support 3 is driven by the fixed overturning assembly 1 to rotate to the lower side along the ring-shaped slide rail 12, at this time, the right-angle edge of the lower-end mechanical support 3 is oppositely arranged with the right-angle edge of the upper-end mechanical support 3, the fixed overturning assembly 1 is reset in the lower S-shaped rail 1212, in this process, the fixed overturning assembly 1 can also generate wind force to cool the welding position of the mechanical support 3, improving the tightness of the welding, after this process, the fixed overturning assembly 1 moves to the blanking assembly 14 to be blanked.

[0042] With reference to Figures 5-8As shown, in the embodiment: the inner arc surface of the S-shaped track 1212 is provided with a semi-annular gear rack one 1215, and the semi-annular gear rack one 1215 is centrally symmetrically provided with a semi-annular gear rack two 1216 along the central axis of the S-shaped track 1212, and the semi-annular gear rack one 1215 and the semi-annular gear rack two 1216 can be combined into a complete annular gear rack, and the semi-annular gear rack one 1215 and the semi-annular gear rack two 1216 are engaged with the fixed overturning assembly 13, and the angle of rotation of the fixed overturning assembly 13 on the semi-annular gear rack two 1216 is more than 180° than the angle of rotation on the semi-annular gear rack one 1215, and in the process of rotation of the fixed overturning assembly 13 in the S-shaped track 1212, the fixed overturning assembly 13 is first engaged with the semi-annular gear rack one 1215 to rotate, and if it rotates in the same direction all the time, the leeward side cooling effect may be poor, at this time, after the fixed overturning assembly 13 rotates positively through the semi-annular gear rack one 1215, it is driven by the semi-annular gear rack two 1216 to rotate reversely in the engagement range of the semi-annular gear rack two 1216, thereby reducing the influence of poor leeward side cooling effect, and at the same time, the fixed overturning assembly 13 is overturned by 180° through the action of the semi-annular gear rack one 1215 and the semi-annular gear rack two 1216, so that the non-welding side of the upper end mechanical support 3 faces the welding mechanical arm 2 for rapid welding treatment.

[0043] Referring to Figure 2 , 9 As shown, in the embodiment: the fixed overturning assembly 13 includes a connecting sliding block 131, the connecting sliding block 131 is in sliding connection with the lower sliding rail 121 and the upper sliding rail 122, the upper end of the connecting sliding block 131 is rotationally installed with an L-shaped fixed plate 133, one side of the L-shaped fixed plate 133 is provided with a fixing piece 132, the fixing piece 132 is composed of a bidirectional synchronous telescopic electric cylinder and two sets of clamping pieces, the two sets of clamping pieces are in sliding connection with the L-shaped fixed plate 133, one side of the connecting sliding block 131 is provided with a laser sensor 134, and the model of the laser sensor 134 is Keyence LR-X. When the mechanical support 3 needs to be welded, the two sets of clamping pieces are driven by the bidirectional synchronous telescopic electric cylinder to fix the mechanical support 3 on the upper end of the L-shaped fixed plate 133, and the moving position of the connecting sliding block 131 is detected in real time by the laser sensor 134.

[0044] Referring to Figures 9-10As shown, in the embodiment: the inside of the connecting sliding block 131 is fixedly installed with two groups of driving motors one 1311, the driving ends of the driving motors one 1311 are fixedly installed with rotating gears one 1312, the two groups of rotating gears one 1312 are rotationally connected with the connecting sliding block 131, and the two groups of rotating gears one 1312 are engaged with the tooth chain 123. When the connecting sliding block 131 moves on the annular slide rail 12, the two groups of rotating gears one 1312 are driven to rotate by the driving motors one 1311, so that the connecting sliding block 131 moves on the annular slide rail 12 along the tooth chain 123.

[0045] Referring to Figures 9-11 As shown, in the embodiment: the inside of the connecting sliding block 131 is rotatably installed with two groups of rotating gears two 1315, the two groups of rotating gears two 1315 are located at the upper ends of the driving motors one 1311, the upper ends of the rotating gears two 1315 are fixedly installed with rotating vanes 1316 through connecting columns, the inside of the connecting sliding block 131 is provided with two groups of cavities 1313, the rotating vanes 1316 are located inside the cavities 1313, the upper end of the connecting sliding block 131 is rotatably installed with a connecting disc 1314, the connecting disc 1314 is in communication with the cavities 1313, and the upper end of the connecting disc 1314 is fixedly connected with an L-shaped fixed plate 133.

[0046] Referring to Figures 9-11 As shown, in the embodiment: the L-shaped fixed plate 133 is installed through a plurality of limiting columns 1335, a plurality of arc-shaped grooves 1336 are formed in the inside of the limiting columns 1335, the arc-shaped grooves 1336 are in communication with the inside of the connecting disc 1314, and the limiting columns 1335 are matched with the mechanical support 3.

[0047] Referring to Figures 9-11As shown, in the embodiment: the lower end of the L-shaped fixed plate 133 is fixedly installed with a connecting rod 1331 penetrating through the connecting sliding block 131 and the connecting disc 1314 and fixedly installed with a rotating gear three 1332, the rotating gear three 1332 is engaged with the two groups of rotating gear two 1315, the lower end of the rotating gear three 1332 is fixedly installed with a rotating gear four 1333, the rotating gear four 1333 is engaged with the half-ring gear one 1215 and the half-ring gear two 1216, the lower end of the rotating gear four 1333 is fixedly installed with a limiting block 1334 matched with the limiting strip 1214, in the process of moving of the connecting sliding block 131 on the straight track 1211 and the half-ring track 1213, the rotating gear three 1332, the rotating gear four 1333, the connecting rod 1331 and the L-shaped fixed plate 133 inside the connecting sliding block 131 remain stationary along with the limiting strip 1214, when the connecting sliding block 131 moves to the S-shaped track 1212, the limiting block 1334 is released from the limiting of the limiting strip 1214, at the same time the rotating gear four 1333 is engaged with the half-ring gear one 1215 and the half-ring gear two 1216 in turn, so that the L-shaped fixed plate 133 is driven by the rotating gear four 1333 to rotate forwardly and then reversely, at the same time the rotation of the rotating gear four 1333 drives the rotating gear three 1332 to rotate constantly and then drives the two groups of rotating gear two 1315 to rotate, the rotating fan blade 1316 is driven by the rotating gear two 1315 to rotate constantly, a large amount of wind force is generated to blow and wipe the welding position of the mechanical support 3 clamped in the L-shaped fixed plate 133 along the connecting disc 1314 and the arc-shaped groove 1336 constantly, at the same time the L-shaped fixed plate 133 rotates forwardly and reversely in the S-shaped track 1212, so that the mechanical support 3 does not have the problem of poor temperature reduction effect of the leeward side, the mechanical support 3 is turned over constantly and the welding position is blown and wiped by the wind force, so that the temperature reduction speed of the mechanical support 3 is fast, after the mechanical support 3 rotates 180° and moves to the other straight track 1211, when the other side is welded by the welding robot 2, the process blows and wipes the welding connecting part and the position of the reverse direction temperature conduction of the mechanical support 3 by the wind force, so that the stress of the welded part in the uncooled state cannot be effectively released, the welded joint is cracked or separated, the molten pool of the welded joint is heated and melted again by the continuous high temperature, the integrity of the original metallurgical combination is damaged, pores, slag inclusion and other defects are generated, at the same time the key positioning parts such as the mounting hole of the support are prone to position deviation due to uneven overall heating, finally the welding quality stability is poor.

[0048] Referring to Figure 2 , Figure 12As shown, in the embodiment: the blanking assembly 14 comprises a U-shaped connecting block 141, a driving motor two 142 is fixedly installed at the upper end of the U-shaped connecting block 141, a driving end of the driving motor two 142 penetrates through the U-shaped connecting block 141 and is fixedly installed with a blanking roller 145, a rotating gear five 143 is fixedly installed outside the driving end of the driving motor two 142, a gear belt 144 is meshed outside the rotating gear five 143, another side of the gear belt 144 is meshed with another set of blanking assemblies 14, and the U-shaped connecting block 141 is fixedly connected with the connecting frame 11 through an L-shaped connecting frame 146, when the connecting sliding block 131 moves to the position of the blanking assembly 14, the fixing piece 132 at the upper end of the connecting sliding block 131 is immediately released from the fixing, and a plurality of blanking rollers 145 are driven by starting the driving motor two 142, so that a guide force in the same direction of movement is given to the mechanical support 3 on the L-shaped fixed plate 133, the mechanical support 3 is taken out of the L-shaped fixed plate 133, and the falling of the mechanical support 3 is buffered to a certain extent by the soft blanking roller 145, so as to reduce the damage caused by the rapid falling of the mechanical support 3.

[0049] Working principle: the pretreated mechanical support 3 is fixed on the L-shaped fixed plate 133 through the fixing piece 132 in the fixed turnover assembly 13, the rotating gear one 1312 is meshed with the tooth chain 123 of the annular sliding rail 12 under the driving of the driving motor one 1311, the fixed turnover assembly 13 moves along the straight track 1211 of the lower sliding rail 121, and is kept stable under the limitation of the limiting strip 1214, the welding mechanical arm 2 on the welding table 1 completes the welding of one side of the mechanical support 3, then the fixed turnover assembly 13 enters the S-shaped track 1212, the limiting block 1334 is separated from the limiting strip 1214, the rotating gear four 1333 is sequentially meshed with the half-annular gear rack one 1215 and the half-annular gear rack two 1216, drives the L-shaped fixed plate 133 to rotate forward and then reversely to realize 180° turnover, at the same time, the rotating gear three 1332 drives the rotating gear two 1315 to drive the rotating fan blade 1316 to rotate, the wind force blows to the weld joint for cooling through the arc-shaped groove 1336 of the connecting disc 1314 and the limiting column 1335, after turnover, the fixed turnover assembly 13 enters the other straight track 1211, the welding mechanical arm 2 welds the other side of the mechanical support 3, then is cooled and reset again through the half-annular track 1213 and the lower S-shaped track 1212, and finally moves to the blanking assembly 14, the fixing piece 132 is released from the fixing, and the driving motor two 142 drives the blanking roller 145 to guide the mechanical support 3 out gently through the gear belt 144.

[0050] The technical scope of the present application is not limited to the above description, and those skilled in the art can make various modifications and changes to the above embodiments without departing from the technical concept of the present application, and these modifications and changes should be within the protection scope of the present application.

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-circular rack one is provided on the inner arc surface of the S-shaped track. A semi-circular rack two is provided symmetrically along the central axis of the S-shaped track. Both the semi-circular rack one and the semi-circular rack two are engaged with the fixed flipping assembly. The fixed flipping assembly rotates 180° more on the semi-circular rack two than it rotates on the semi-circular rack one. 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. 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. 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 sets of 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. 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.

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: A laser sensor is provided on one side of the connecting slider.

5. The flipping welding equipment for welding agricultural machinery supports according to claim 1, 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.

6. 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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