Three-station multi-angle intelligent welding system and welding method thereof

Abstract

A three-station multi-angle intelligent welding system and a welding method thereof, the welding system comprising a transposition device and a transfer device outside the transposition device and two groups of welding devices; the transposition device comprises three groups of fixing mechanisms which can rotate around a vertical axis and are arranged in a circumferential array, and a reversing mechanism is arranged between two adjacent groups of fixing mechanisms, the reversing mechanism comprising two Y-shaped seats arranged oppositely and a rotating disc clamped between the two Y-shaped seats and capable of rotating, the two Y-shaped seats being rotationally connected with two adjacent fixing mechanisms respectively, wherein a rotating transmission shaft in transmission connection with the rotating disc is further arranged in the second Y-shaped seat, the fixing mechanism comprising two drive shafts arranged vertically and in transmission connection with the second Y-shaped seat and the rotating transmission shaft respectively; the transposition device further comprises three groups of drive machines arranged in a circumferential array, which can be in transmission cooperation with the drive shafts through lifting, on the one hand, the maintenance and replacement work of the drive machines can be more convenient, and on the other hand, the reversing mechanism can drive the workpiece to rotate, and then the welding work is divided into two times.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent welding equipment, in particular to a three-station multi-angle intelligent welding system and a welding method thereof. BACKGROUND

[0002] Positioners are commonly used auxiliary equipment for workpiece welding. Usually, some complex-shaped workpieces require positioners with certain overturning-rotating functions to adjust the welding angle. For example, the application file with the application number 202220538222.9 disclosed in the patent library discloses a liftable rotary welding positioner, which includes a longitudinal overturning driving mechanism and a horizontal rotating mechanism. The workpiece to be welded on the workbench can rotate in the longitudinal plane and the horizontal plane under the action of the longitudinal overturning driving mechanism and the horizontal rotating mechanism to complete the adjustment of the welding angle.

[0003] The above-mentioned positioner has only one workbench, so that after the workpiece on it is welded, the workpiece needs to be disassembled and reassembled with new parts before the welding work can continue, resulting in a long idle period and seriously affecting the welding efficiency.

[0004] Some positioners use a double-station welding method, in which one side of the welding station is used for welding and the other side of the welding station is used for disassembling and assembling the workpiece to ensure the welding efficiency. However, the driving machine for rotating or overturning the workpiece is usually directly fixed on the positioner, so that it can only rotate in the forward and reverse directions to complete the position exchange work of the two stations. This arrangement has certain limitations. On the one hand, when the workpiece to be welded requires high welding firmness or the workpiece itself has a complex structure, such as welding a scissors fork chassis, a large amount of welding time is required, while the assembly and fixation of the scissors fork chassis require less time, which results in a mismatch between the welding time and the disassembly and assembly time of the workpiece on the two stations. On the other hand, this direct fixation of the driving machine on the positioner makes it easy to be damaged due to collision or other reasons, and the maintenance and replacement work is difficult to perform. SUMMARY

[0005] To solve the technical problems in the background art, the present application provides a three-station multi-angle intelligent welding system and a welding method thereof.

[0006] The technical scheme of the present application is as follows:

[0007] The application first provides a three-station multi-angle intelligent welding system, which comprises a transposition device, a transfer device arranged circumferentially on the outer side of the transposition device, and two groups of welding devices.

[0008] As one of the core technical concepts of the application, the transposition device comprises a base and a rotating support arranged rotatably on the upper side of the base, the rotating axis of the rotating support is vertical, and three groups of fixing mechanisms are circumferentially arranged on the upper side of the rotating support around the rotating axis thereof, one group of reversing mechanisms is arranged between each adjacent two groups of fixing mechanisms, the reversing mechanisms are used for fixing work of the workpiece, and the rotating support can drive the three groups of reversing mechanisms to change positions between the two groups of welding devices and the transfer device through rotation.

[0009] As another core technical concept of the application, the reversing mechanism comprises a first Y-shaped seat and a second Y-shaped seat arranged horizontally opposite to each other, and a rotating disc horizontally clamped between the two Y-shaped seats and capable of rotating, the rotating disc is provided with a second fixing member capable of fixing the workpiece, the two Y-shaped seats are rotatably connected with the adjacent two fixing mechanisms, and the rotating axes are horizontal, wherein the second Y-shaped seat is internally provided with a rotating transmission shaft coaxial with the rotating axis thereof, one end of the rotating transmission shaft is in transmission connection with the rotating disc, and the other end of the rotating transmission shaft extends out of the second Y-shaped seat, the fixing mechanism comprises two driving shafts arranged vertically, the second Y-shaped seat and the one end of the fixing mechanism rotatably connected with the second Y-shaped seat are in transmission connection with the two driving shafts, respectively, and the one end of the rotating transmission shaft extending out of the second Y-shaped seat is in transmission connection with the two driving shafts; the transposition device further comprises three groups of driving units circumferentially arranged on the lower side of the rotating support, each group of driving units comprises two driving machines, which are arranged to be capable of being in transmission cooperation with the lower ends of the two driving shafts of the fixing mechanism through lifting, the rotating of the driving shafts can be driven by the driving machines, the reversing action of the reversing mechanism can be driven, the rotating action of the rotating disc can be driven by the rotating transmission shaft, and the reversing action of the reversing mechanism and the rotating action of the rotating disc can not interfere with each other due to the fact that the rotating transmission shaft is collinear with the reversing axis of the reversing mechanism itself.

[0010] On the basis of the above structure, the transfer device comprises a transfer track and a transfer trolley arranged on the transfer track, the transfer trolley is arranged to be capable of being docked with the rotary table to complete the transfer work of the workpiece; the welding device is a welding robot / welding mechanical arm, since the driving machine for driving the reversing mechanism is fixed on the lower side of the rotary support, that is, the driving machine is actually designed in a split type between the reversing device body (including the base, the rotary support, the fixing mechanism and the reversing mechanism), the service life of the driving machine is increased, the maintenance and replacement work of the driving machine in the later period can be more conveniently performed, meanwhile, the split type arrangement between the driving machine and the reversing device body enables the rotary support to rotate in a single direction all the time without being limited by the installation of the driving machine, and the welding work of the workpiece can be performed twice in cooperation with the arrangement mode of the double welding devices, meanwhile, the docking and transfer time between the transfer device and the reversing device can be better matched with the welding time of the workpiece, and the welding efficiency of the workpiece is significantly improved.

[0011] The three-station multi-angle intelligent welding system as described above, in terms of the structure of the fixing mechanism, further comprises a housing, the Y-shaped seat is rotationally connected with the housing, the driving shaft is vertically arranged in the housing, and the housing can provide effective protection for the driving shaft. In order to make the connection between the fixing mechanism and the rotary support more convenient and the maintenance and replacement work of the internal driving shaft more convenient, the upper side of the rotary support is further provided with a fixed slot, and the housing of the fixing mechanism is vertically inserted and fixed in the fixed slot.

[0012] In order to make the rotary connection between the reversing mechanism and the fixing mechanism more stable and reliable, the outer side of the housing is further provided with a connecting cylinder, and the Y-shaped seat is inserted in the connecting cylinder.

[0013] As a preferred embodiment, in order to make the driving machine more accurately and stably transmit with the driving shaft, the fixed slot is further vertically provided with a transmission joint penetrating through the rotary support, the upper end of the transmission joint is inserted and fixed with the driving shaft, and the lower end is arranged to be capable of being inserted and transmitted with the driving machine. The driving machine can drive the transmission joint to rotate, and then drive the driving shaft to act.

[0014] As a further preferred embodiment, the reversing device further comprises three groups of fixing seats, the upper side of the fixing seat is vertically provided with a lifting barrel with an open upper end, and the driving unit is located in the lifting barrel; the vertical distance between the upper side of the lifting barrel and the lower side of the rotary support is less than the distance between the upper end of the driving machine and the lower end of the transmission joint, so that when the driving machine and the transmission joint are in transmission, the lifting barrel can provide a good support for the rotary support, so that the rotary support can be more stable during the welding work, especially when the reversing mechanism acts, to ensure the welding effect.

[0015] The three-position multi-angle intelligent welding system has the positioning wheels arranged at the two ends of each Y-shaped seat close to the rotating disc, the positioning grooves are arranged in the middle outer rings of the positioning wheels, and the outer rings of the rotating disc are clamped in the positioning grooves.

[0016] In order to prevent the strong light generated during the welding work from affecting the workers, three baffles are vertically arranged on the upper side of the rotating support in a circumferential array.

[0017] In order to make the transmission cooperation between the driving machine and the reversing mechanism more stable, and make the control of the reversing angle of the reversing mechanism and the rotating angle of the rotating disc more accurate, the second Y-shaped seat and the driving shaft, the rotating transmission shaft and the driving shaft, and the rotating transmission shaft and the rotating disc are all connected through the bevel gear structure.

[0018] In the three-position multi-angle intelligent welding system, the transmission ratio between the second Y-shaped seat and the driving shaft is 1:30-1:20, and the transmission ratio between the rotating disc and the driving shaft is 1:50-1:40.

[0019] The application further provides a welding method based on the three-position multi-angle intelligent welding system.

[0020] S1, preparation;

[0021] S1.1, manually assembling the workpiece on the transfer trolley;

[0022] S1.2, moving the transfer trolley to the position changing device position and abutting against the rotating disc to transfer the workpiece to the rotating disc;

[0023] S2, one-time welding;

[0024] S2.1, returning the transfer trolley to the assembling position, running S1.1 once, at the same time, rotating the rotating support by 120° to drive the workpiece to the first group of welding device position to perform one-time welding work;

[0025] S2.2, running S1.2 once;

[0026] S2.3, the transfer trolley returns to the assembly position, and one S1.1 is run, at the same time, the first group of welding devices stops welding once, the rotating support rotates 120°, drives the once-welded workpiece to the second group of welding device position to carry out the second welding work, and drives the newly received workpiece to the first group of welding device position to carry out the first welding work;

[0027] S3, cycle welding;

[0028] S3.1, one S1.2 is run, and the transfer trolley waits for the second welding work to be completed;

[0029] S3.2, the first group of welding devices stops welding once, the rotating support rotates 120°, drives the once-welded workpiece to the second group of welding device position to carry out the second welding work, and drives the newly received workpiece to the first group of welding device position to carry out the first welding work;

[0030] S3.3, the transfer trolley and the rotating disc carry out the receiving work of the second-welded workpiece;

[0031] S3.4, the transfer trolley returns to the assembly position, and the workpiece is manually removed;

[0032] S3.5, one S1.1 is run;

[0033] S3.6, steps S3.1-S3.5 are repeatedly run.

[0034] The beneficial effects of the present application are that the present application is a three-station multi-angle intelligent welding system and a welding method thereof, the driving machine can drive the driving shaft to rotate, thereby driving the reversing mechanism to realize the overturning action, and can drive the rotating disc to realize the rotating action, since the rotating transmission shaft and the overturning axis of the reversing mechanism are collinear, the overturning action of the reversing mechanism and the rotating action of the rotating disc can not interfere with each other; since the driving machine driving the reversing mechanism is fixed on the lower side of the rotating support, that is, the driving machine is actually designed in a split type between the driving machine and the transposition device body, the service life of the driving machine is increased, so that the maintenance and replacement work of the driving machine in the later stage can be more conveniently carried out; the split type between the driving machine and the transposition device body enables the rotating support to drive the workpiece to rotate in a single direction all the time without being limited by the installation of the driving machine, and cooperates with the setting mode of the double welding devices, so that the welding work of the workpiece can be carried out twice, so that the docking and transferring time between the transfer device and the transposition device and the welding time of the workpiece can be better matched, and the welding efficiency of the workpiece is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0035] The scheme and advantages of the present application will become clear to those skilled in the art from the following detailed description of the preferred embodiments. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not considered to be limiting to the present application.

[0036] In the drawings:

[0037] Figure 1 A schematic view of the structure of the welding system in the embodiment;

[0038] Figure 2 A schematic view of the structure of the transposition device in the embodiment;

[0039] Figure 3 A schematic view of the structure of the transposition mechanism in the embodiment;

[0040] Figure 4 A schematic view of the structure of the fixing mechanism in the embodiment;

[0041] Figure 5 A schematic view of the internal structure of the fixing mechanism in the embodiment;

[0042] Figure 6 A schematic view of the structure of the reversing mechanism in the embodiment;

[0043] Figure 7 A sectional view of the reversing mechanism in the embodiment;

[0044] Figure 8 A schematic view of the transmission cooperation structure of the reversing mechanism and the fixing mechanism in the embodiment;

[0045] Figure 9 A schematic view of the structure of the limiting support mechanism in the embodiment;

[0046] Figure 10 A schematic view of the circulating welding mode of the welding system in the embodiment;

[0047] The components represented by the respective reference numerals in the drawings are:

[0048] 1, transposition device; 11, transposition mechanism; 111, base; 112, rotating support; 1121, fixed slot; 113, baffle; 114, transmission joint; 12, fixing mechanism; 121, housing; 122, reversing drive unit; 1221, overturning drive shaft; 1222, rotating drive shaft; 123, connecting cylinder; 124, fixing frame; 13, reversing mechanism; 131, first fixing arm; 1311, first Y-shaped seat; 1312, positioning wheel; 132, second fixing arm; 1321, second Y-shaped seat; 1322, rotating transmission shaft; 133, rotating disc; 14, limiting support mechanism; 141, fixing seat; 142, lifting bucket; 143, drive machine; 2, transfer device; 21, transfer track; 22, transfer vehicle; 3, welding device. DETAILED DESCRIPTION

[0049] Exemplary embodiments of the present disclosure will be described in greater detail below with reference to the accompanying drawings.

[0050] Embodiment

[0051] The embodiment first provides a three-station multi-angle intelligent welding system, referring to Figure 1 , comprising a transposition device 1, a transfer device 2 circumferentially arranged on the outer side of the transposition device 1, and two groups of welding devices 3 circumferentially arranged on the transfer device 2. The workpiece can complete the welding work on the transposition device 1 through the welding device 3. The transfer device 2 is arranged to be able to dock with the transposition device 1, transfer the workpiece to be welded to the transposition device 1, and move the workpiece welded on the transposition device 1 out. The welding system (a three-station multi-angle intelligent welding system described above) further comprises a control device. The transposition device 1, the welding device 3, and the transfer device 2 are in communication connection with the control device and can be controlled to operate by the control mechanism. The structure of the welding system will be described in detail below with reference to the drawings.

[0052] In the embodiment, as for the structure of the welding device 3, a welding robot or a welding mechanical arm is adopted. In order to save welding space, a welding mechanical arm is preferably adopted.

[0053] In the embodiment, as for the structure of the transfer device 2, it comprises a transfer track 21 and a transfer trolley 22 arranged on the transfer track 21. The transfer trolley 22 comprises a trolley frame and a supporting plate arranged on the trolley frame. The supporting plate is provided with a first fixing member capable of fixing each component part of the workpiece. The trolley frame is further provided with a push-pull unit on the upper side. The transfer trolley 22 is arranged to be able to push the supporting plate together with the assembled workpiece to the transposition device 1 through the push-pull unit, and pull the workpiece welded to the supporting plate to the transfer trolley 22 through the push-pull unit, so as to finally complete the transfer work of the workpiece between the transfer trolley 22 and the transposition device 1.

[0054] In the embodiment, referring to Figure 2 , the transposition device 1 comprises a transposition mechanism 11 and a fixing mechanism 12 arranged on the transposition mechanism 11. A reversing mechanism 13 is installed through the fixing mechanism 12. The transfer trolley 22 can dock with the reversing mechanism 13 to complete the transfer work of the workpiece. The structure of the transposition device 1 will be described in detail below.

[0055] First, referring to Figure 3 , as for the structure of the transposition mechanism 11, it comprises a base 111 and a rotating support 112 rotatably arranged on the upper side of the base 111. The rotating axis of the rotating support 112 is vertical. The base 111 is further provided with a motor (not shown in the figure) on one side. The motor is in transmission connection with the rotating support 112 and can drive the rotating support 112 to rotate.

[0056] On the basis of the above structure, the fixing mechanism 12 is located on the upper side of the rotating support 112, and there are three groups of the fixing mechanism 12 circumferentially arranged around the rotation axis of the rotating support 112, and one group of the reversing mechanism 13 is arranged between each two adjacent groups of the fixing mechanism 12, wherein the reversing mechanism 13 is used for the fixing work of the workpiece, the rotating support 112 can drive the three groups of the reversing mechanism 13 to act through rotation, and then drive the workpiece to complete the position transformation work between the two groups of the welding device 3 and the transfer device 2.

[0057] As a preferred embodiment, in order to prevent the strong light generated during the welding work from affecting the workers, three circumferentially arranged baffles 113 are further vertically arranged on the upper side of the rotating support 112, and the three groups of the reversing mechanism 13 are respectively located between two adjacent baffles 113.

[0058] Secondly, in combination with Figure 4 and Figure 5 As for the structure of the fixing mechanism 12, it comprises a reversing driving unit 122, the reversing driving unit 122 comprises two vertically arranged driving shafts, one of which is a turnover driving shaft 1221, and the other is a rotating driving shaft 1222.

[0059] Finally, in combination with Figure 6-8 As for the structure of the reversing mechanism 13, it comprises two horizontally oppositely arranged fixing arms, both of which comprise a Y-shaped seat, and the two Y-shaped seats of the two fixing arms are horizontally oppositely arranged, the reversing mechanism 13 further comprises a rotating disc 133 horizontally clamped between the two Y-shaped seats and capable of rotating, the rotating disc 133 is provided with a second fixing piece capable of fixing a tray and then fixing a workpiece, the second fixing piece can be in the form of a slot or a clamping groove, which is not limited here, and the two Y-shaped seats are respectively rotationally connected with two adjacent fixing mechanisms 12, and the rotation axis is horizontal.

[0060] Specifically, the two fixed arms are a first fixed arm 131 and a second fixed arm 132, and the Y-shaped seats are a first Y-shaped seat 1311 and a second Y-shaped seat 1321. The second Y-shaped seat 1321 is internally provided with a rotating transmission shaft 1322 coaxial with the rotation axis thereof. One end of the rotating transmission shaft 1322 is in transmission connection with the edge of a rotating disc 133, and the other end extends out of the second Y-shaped seat 1321. One end of the second Y-shaped seat 1321 in rotation connection with the fixed mechanism 12 and the end of the rotating transmission shaft 1322 extending out of the second Y-shaped seat 1321 are respectively in transmission connection with two drive shafts. The drive shaft in transmission connection with the second Y-shaped seat 1321 is a turnover drive shaft 1221, and the drive shaft in transmission connection with the rotating transmission shaft 1322 is a rotating drive shaft 1222. The turnover action of the reversing mechanism 13 can be realized through the rotation of the second Y-shaped seat 1321 driven by the turnover drive shaft 1221, and the rotating action of the rotating disc 133 can be realized through the rotation of the rotating transmission shaft 1322 driven by the rotating drive shaft 1222.

[0061] On the basis of the above structure, in combination with Figure 9 The transposition device 1 further comprises three groups of limiting support mechanisms 14 circumferentially arranged on the lower side of the rotating support 112. The limiting support mechanism 14 comprises a fixed seat 141 and a drive unit arranged on the upper side of the fixed seat 141. The drive unit comprises two drive machines 143 arranged to be in transmission cooperation with the lower ends of the two drive shafts of the fixed mechanism 12 through lifting. The drive machines 143 can drive the rotation of the two drive shafts, thereby driving the turnover action of the reversing mechanism 13 and the rotating action of the rotating disc 133 through the rotating transmission shaft 1322. Since the rotating transmission shaft 1322 is collinear with the turnover axis of the reversing mechanism 13, the turnover action of the reversing mechanism 13 and the rotating action of the rotating disc 133 do not interfere with each other.

[0062] In order to make the transmission cooperation between the drive machines 143 and the reversing mechanism 13 more stable and to make the control of the turnover angle of the reversing mechanism 13 and the rotating angle of the rotating disc 133 more accurate, the second Y-shaped seat 1321 and the drive shaft, the rotating transmission shaft 1322 and the drive shaft, and the rotating transmission shaft 1322 and the rotating disc 133 are all in transmission connection through bevel gear structures.

[0063] As a preferred embodiment, the transmission ratio between the second Y-shaped seat 1321 and the driving shaft is 1:30-1:20, preferably 1:25, and the transmission ratio between the rotating disc 133 and the driving shaft is 1:50-1:40, preferably 1:45. While ensuring the accuracy of the reversing mechanism 13 flipping angle and the rotating disc 133 rotating angle control, it can also save the time required for reversing mechanism 13 flipping and rotating disc 133 rotating control, thereby ensuring the welding efficiency.

[0064] In summary, the driving machine 143 driving the reversing mechanism 13 is fixed on the lower side of the rotating support 112, i.e. the driving machine 143 is actually separate from the body of the transposition device 1 (including the base 111, the rotating support 112, the fixing mechanism 12 and the reversing mechanism 13), which increases the service life of the driving machine 143 and makes the maintenance and replacement of the driving machine 143 more convenient. At the same time, the separate arrangement between the driving machine 143 and the body of the transposition device 1 enables the rotating support 112 to rotate the workpiece in a single direction without being limited by the installation of the driving machine 143. In combination with the arrangement of the double welding device 3, the welding work of the workpiece can be carried out twice, and the docking and transferring time between the transfer device 2 and the transposition device 1 can be better matched with the welding time of the workpiece, thereby significantly improving the welding efficiency of the workpiece.

[0065] In this embodiment, the fixing mechanism 12 further includes a vertically arranged housing 121 with an open lower end. The housing 121 further includes a fixing frame 124, and the rotating driving shaft 1222 and the flipping driving shaft 1221 are vertically arranged on the fixing frame 124 inside the housing 121, which can provide good protection for the two driving shafts.

[0066] As a preferred embodiment, the upper side of the rotating support 112 is further provided with a fixed slot 1121, and the housing 121 of the fixing mechanism 12 is vertically inserted and fixed in the fixed slot 1121, so that the connection between the fixing mechanism 12 and the rotating support 112 is more convenient, and the maintenance and replacement of the internal driving shafts are more convenient.

[0067] In order to enable the driving machine 143 to be more accurately and stably coupled with the driving shaft, the fixed slot 1121 is further provided with a transmission joint 114 penetrating through the rotating support 112, the upper end of the transmission joint 114 is inserted and fixed with the driving shaft, and the lower end is arranged to be inserted and coupled with the driving machine 143. The driving machine 143 can drive the transmission joint 114 to rotate, thereby driving the driving shaft to act.

[0068] As a further preferred, to ensure the Y-shaped seat of the reversing mechanism 13 and the shell 121 of the fixing mechanism 12 can be more stable and reliable in the rotational connection relationship, the outer side of the shell 121 is further provided with a connecting barrel 123, and the Y-shaped seat is inserted into the connecting barrel 123.

[0069] Further, to make the matching relationship between the rotating disc 133 and the two Y-shaped seats more stable and reliable, and at the same time make the rotating disc 133 be able to rotate freely, the two ends of the Y-shaped seat close to the rotating disc 133 are each provided with a positioning wheel 1312, the middle part of the positioning wheel 1312 is provided with a positioning groove, and the outer circle of the rotating disc 133 is clamped in the positioning groove.

[0070] In the embodiment, the limiting support mechanism 14 further comprises a lifting barrel 142 which is arranged on the upper side of the fixing seat 141 and has an open upper end, and the driving unit is located in the lifting barrel 142; the vertical distance between the upper side of the lifting barrel 142 and the lower side of the rotating support 112 is less than the distance between the upper end of the driving machine 143 and the lower end of the transmission joint 114, so that when the driving machine 143 and the transmission joint 114 are in transmission cooperation, the rotating support 112 can be well supported by the lifting barrel 142, and the rotating support 112 can be more stable during the welding work, especially when the reversing mechanism 13 is in action, thereby ensuring the welding effect.

[0071] The embodiment also provides a welding method based on the three-station multi-angle intelligent welding system. Figure 10 The welding method specifically comprises the following steps:

[0072] The initial state transfer trolley 22 is arranged at the end of the transfer track 21 away from the position changing device 1, and is regarded as an assembly position;

[0073] S1, preparation;

[0074] S1.1, manually assembling a workpiece on the transfer trolley 22;

[0075] S1.2, combining Figure 10 (①), the transfer trolley 22 moves to the position of the position changing device 1 and is connected with the rotating disc 133 to transfer the workpiece to the rotating disc 133 through the communicating supporting plate, and the fixing of the supporting plate is completed through the second fixing part on the rotating disc 133;

[0076] S2, one-time welding;

[0077] S2.1, the transfer trolley 22 returns to the assembly position, and one-time S1.1 is performed, and at the same time, the rotating support 112 rotates by 120° to drive the workpiece to the position of the first group of welding devices 3 to perform one-time welding work;

[0078] S2.2, combining Figure 10(2), run S1.2 once;

[0079] S2.3, combine Figure 10 (3), the transfer car 22 returns to the assembly position, run S1.1 once, at the same time, the first group of welding devices 3 stops welding once, the rotating support 112 rotates 120°, drives the workpiece after the first welding to reach the second group of welding devices 3 position for secondary welding work, and drives the newly received workpiece to reach the first group of welding devices 3 position for primary welding work;

[0080] S3, cycle welding;

[0081] S3.1, run S1.2 once, and the transfer car 22 waits for the completion of the secondary welding work;

[0082] It should be noted that the working time required for primary welding is the same as the working time required for secondary welding work;

[0083] S3.2, the first group of welding devices 3 stops primary welding, the rotating support 112 rotates 120°, drives the workpiece after the first welding to reach the second group of welding devices 3 position for secondary welding work, and drives the newly received workpiece to reach the first group of welding devices 3 position for primary welding work;

[0084] S3.3, combine Figure 10 (4), after the transfer car 22 is docked with the rotating disc 133 for secondary welding, the receiving work of the workpiece is completed after all the welding work is completed;

[0085] S3.4, the transfer car 22 returns to the assembly position, and the workpiece is manually removed;

[0086] S3.5, run S1.1 once;

[0087] S3.6, combine Figure 10 (5), repeat steps S3.1-S3.5.

Claims

1. A three-station multi-angle intelligent welding system, characterized in that, The transposition device (1) and the transfer device (2) and two groups of welding devices (3) are arranged circumferentially outside the transposition device (1); The transposition device (1) comprises a base (111) and a rotating support (112) rotatably arranged on the upper side of the base (111), and three groups of fixing mechanisms (12) are circumferentially arranged on the upper side of the rotating support (112) around the rotating axis thereof, and a group of reversing mechanisms (13) is arranged between every two adjacent groups of fixing mechanisms (12); The reversing mechanism (13) comprises a first Y-shaped seat (1311) and a second Y-shaped seat (1321) arranged horizontally opposite to each other, and a rotating disc (133) horizontally clamped between the two Y-shaped seats and capable of rotating, and the two Y-shaped seats are rotatably connected with the two adjacent fixing mechanisms (12), and the rotating axes are horizontal, and the second Y-shaped seat (1321) further comprises a rotating transmission shaft (1322) coaxial with the rotating axis thereof, one end of the rotating transmission shaft (1322) is in transmission connection with the rotating disc (133), and the other end extends out of the second Y-shaped seat (1321); The fixing mechanism (12) comprises two driving shafts arranged vertically, one end of the second Y-shaped seat (1321) and the end of the rotating transmission shaft (1322) extending out of the second Y-shaped seat (1321) are in transmission connection with the two driving shafts, respectively; The transposition device (1) further comprises three groups of driving units circumferentially arranged on the lower side of the rotating support (112), each group of driving units comprises two driving machines (143) arranged to be capable of being in transmission cooperation with the lower ends of the two driving shafts of the fixing mechanism (12) through lifting; The transfer device (2) comprises a transfer track (21) and a transfer trolley (22) arranged thereon, and the transfer trolley (22) is arranged to be capable of being in butt joint with the rotating disc (133) to complete the transfer work of the workpiece; The welding device (3) is a welding robot / welding mechanical arm.

2. The three-station multi-angle intelligent welding system of claim 1, wherein, The fixing mechanism (12) further comprises a shell (121), the Y-shaped seat is rotatably connected with the shell (121), and the driving shaft is vertically arranged in the shell (121); The upper side of the rotating support (112) is further provided with a fixed slot (1121), and the shell (121) is inserted and fixed in the fixed slot (1121).

3. The three-station multi-angle intelligent welding system of claim 2, wherein, The outer side of the shell (121) is provided with a connecting barrel (123), and the Y-shaped seat is inserted in the connecting barrel (123).

4. The three-station multi-angle intelligent welding system of claim 2, wherein, The transmission joint (114) vertically arranged in the fixed slot (1121) penetrates through the rotating support (112), the upper end of the transmission joint (114) is in insertion and fixed connection with the driving shaft, and the lower end is arranged to be capable of being in insertion transmission cooperation with the driving machine (143).

5. The three-station multi-angle intelligent welding system of claim 4, wherein, The transposition device (1) further comprises three groups of fixing seats (141), the upper side of the fixing seat (141) is provided with a lifting barrel (142) with an open upper end, and the driving unit is located in the lifting barrel (142); The vertical distance between the upper side of the lifting barrel (142) and the lower side of the rotating support (112) is less than the distance between the upper end of the driving machine (143) and the lower end of the transmission joint (114).

6. A welding method based on the three-station multi-angle intelligent welding system according to any one of claims 1-5, characterized in that, The welding method specifically comprises the following steps: S1, preparation; S1.1, artificial assembly of workpieces on the transfer trolley (22); S1.2, the transfer trolley (22) moves to the position of the transposition device (1) and is docked with the rotating disc (133) to transfer the workpieces to the rotating disc (133); S2, primary welding; S2.1, the transfer trolley (22) returns to the assembly position, and operation S1.1 is performed at the same time, and the rotating support (112) is rotated by 120° to drive the workpieces to the position of the first set of welding devices (3) for primary welding work; S2.2, operation S1.2 is performed; S2.3, the transfer trolley (22) returns to the assembly position, and operation S1.1 is performed at the same time, and the first set of welding devices (3) stops primary welding, the rotating support (112) is rotated by 120° to drive the workpieces after primary welding to the position of the second set of welding devices (3) for secondary welding work, and to drive the newly received workpieces to the position of the first set of welding devices (3) for primary welding work; S3, cyclic welding; S3.1, operation S1.2 is performed, and the transfer trolley (22) waits for the completion of secondary welding work; S3.2, the first set of welding devices (3) stops primary welding, the rotating support (112) is rotated by 120° to drive the workpieces after primary welding to the position of the second set of welding devices (3) for secondary welding work, and to drive the newly received workpieces to the position of the first set of welding devices (3) for primary welding work; S3.3, the transfer trolley (22) receives the workpieces after secondary welding with the rotating disc (133); S3.4, the transfer trolley (22) returns to the assembly position, and the workpieces are removed by artificial; S3.5, operation S1.1 is performed; S3.6, steps S3.1-S3.5 are repeatedly performed.

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