An automatic laser welding production line and process method for an impeller

Abstract

On the one hand, the present invention provides a fully automatic laser welding production line for impellers, which includes a coil feeder, a stamping device, a blade bending device, a fully automatic impeller welding device, and an electric control box; a coil to be processed is provided on the coil feeder; a down-draw punch and a blade progressive die are provided in the stamping device, which are used to stamp and cut the coil automatically conveyed by the coil feeder to form blades; the blade bending device receives the blades formed by the processing of the stamping device and preliminarily processes them to bend the two ends of the blades; the fully automatic impeller welding device includes a transfer module, a hemming welding module, a detection module, and a blanking module; on the other hand, the present invention also provides a fully automatic laser welding process method for impellers; the present invention can automatically complete the processes of blade stamping and welding, with high welding quality, smooth and beautiful welds in the laser welding process, the next silver powder painting process can be cancelled, and the processing efficiency is high.

Description

Technical Field

[0001] The present invention relates to a full-automatic laser welding production line and process method for impellers. Background Art

[0002] As a key component in rotating machinery, the welding quality of an impeller directly affects the performance and service life of the equipment. In the prior art, when producing impellers, manual welding is mainly relied on, but the welding quality is greatly affected by the skills of the operator, and the production efficiency is relatively low; therefore, the prior art still needs to be improved and developed. Summary of the Invention

[0003] In view of the deficiencies in the above problems, the present invention provides a full-automatic laser welding production line and process method for impellers.

[0004] To achieve the above object, on the one hand, the present invention provides a full-automatic laser welding production line for impellers, including a coil feeder, a stamping device, a blade bending device, a full-automatic impeller welding device, and an electric control box;

[0005] Coil feeder, on which there is a coil to be processed;

[0006] Stamping device, which is provided with a down-drawing punch and a blade progressive die inside, and is used for stamping and cutting the coil automatically conveyed by the coil feeder to form blades;

[0007] Blade bending device, which receives the blades formed by the processing of the stamping device and preliminarily processes them to bend the two ends of the blades;

[0008] Full-automatic impeller welding device, which includes a transfer module, a hemming welding module, a detection module, and a blanking module. The transfer module includes an inclined chute, a moving seat, a driving member four, a driving member five, and a detection switch two. The inclined chute is fixed above the second frame, and the inner bottom surface is inclined so that the blade ends are attached to the limiting surface of the inclined chute. The moving seat is slidably connected to the second frame through a slide rail assembly and is arranged on the blanking side of the inclined chute. A dial block is provided on the output shaft of the driving member four, and the output shaft of the driving member five is connected to the moving seat. The transfer module receives the blades processed by the blade bending device and transfers and positions them to the hemming welding module. The hemming welding module completes the bending and welding of the middle parts of the blades step by step to form an impeller. The blanking module classifies and transfers the impellers according to the detection information of the weld quality on the impellers by the detection module;

[0009] Electric control box, which is provided with a PLC control program inside to control the coil feeder, the stamping device, the blade bending device, and the full-automatic impeller welding device to perform coordinated actions.

[0010] Further, the blade bending device includes a first frame, a flap disposed within the first frame, a lower die bar disposed on the flap for supporting both sides of the blade, an upper die block disposed above the end of the lower die bar, and a first driving member connected to the upper die block for driving the upper die block to move up and down. The upper die block and the end of the lower die bar have mating arc surfaces for bending both ends of the blade.

[0011] Further, the blade bending device is connected to the stamping device through a first transmission line. The output end of the first transmission line corresponds to the inlet end of the flap. Guide blocks and a first detection switch are disposed on both sides of the inlet end of the flap, and a first limiting block is disposed away from the inlet end. A second driving member is disposed on the first frame near the end of the first limiting block, and a strong magnetic member is disposed on the output shaft of the second driving member. During processing, the first detection switch feeds back the information of the blade in place on the flap to the electric control box, and the electric control box controls the output shaft of the second driving member to retract, driving the blade to move axially along the lower die bar and lean against the first limiting block.

[0012] Further, the blade bending device is connected to the full-automatic impeller welding device through a second transmission line. The second transmission line is disposed parallel to one side of the flap, and a baffle is disposed on the side away from the flap. One side of the flap is hinged to the first frame, and a third driving member is connected below the other side. The third driving member is electrically connected to the electric control box for driving the flap to turn upwards until the blade turns 180 degrees and is transferred to the second transmission line.

[0013] Further, the moving directions of the output shafts of the fourth driving member and the fifth driving member are parallel. A plurality of support bars are fixedly disposed on the moving seat along its moving direction in parallel. A limiting portion is disposed on the support bar near the inclined groove. The top surface of the limiting portion inclines downwards towards the inclined groove for facilitating the pusher block to push the blade in the inclined groove into the moving seat. A plurality of second limiting blocks cooperating with the limiting portion are disposed on the moving seat, and limiting plates are disposed on both sides perpendicular to the moving direction.

[0014] Further, the edge wrapping and welding module includes a welding electrode mandrel, a sixth driving member, a lower supporting die, a seventh driving member, a side pressing die, a moving assembly, and a welding torch. The welding electrode mandrel is fixedly disposed above the second frame, and its axis is parallel to the moving direction of the output shaft of the fifth driving member. One end of the sixth driving member is fixedly connected to the second frame, and its output shaft is connected to the lower supporting die to drive the lower supporting die to move up and down directly below the welding electrode mandrel. An inner concave portion cooperating with the lower supporting die is disposed on the moving seat. Two of the seventh driving members and the side pressing dies are symmetrically disposed on the second frame on both sides of the welding electrode mandrel. The side pressing die is connected to the output shaft of the seventh driving member. Mating arc surfaces are provided between the welding electrode mandrel, the lower supporting die, and the side pressing die to wrap both ends of the blade around the welding electrode mandrel. The moving assembly is fixedly disposed above the second frame on one side of the welding electrode mandrel. A plurality of welding torches are disposed on the moving assembly side by side and movable, and are driven by the moving assembly to move axially along the welding electrode mandrel to weld the edge wrapping seam of the blade to form an impeller.

[0015] Furthermore, the welding electrode mandrel includes a main welding electrode mandrel and a secondary welding electrode mandrel which are coaxially arranged and used in cooperation. The main welding electrode mandrel is fixed above the second frame through a main connecting seat. The secondary welding electrode mandrel is connected to the output shaft of the eighth driving member, and the maximum distance between the secondary welding electrode mandrel and the main welding electrode mandrel is not less than the width of the impeller. The eighth driving member is fixed above the second frame through a secondary connecting seat. A pushing mechanism is provided on the main connecting seat to push the impeller out of the main welding electrode mandrel and drop it through the gap between the main welding electrode mandrel and the secondary welding electrode mandrel to the blanking module.

[0016] Furthermore, the blanking module includes a first material guiding plate, a second material guiding plate, a ninth driving member, and a tenth driving member. A blanking port is provided on the first material guiding plate and is fixedly connected to the second frame. One end of the second material guiding plate is hinged to the first material guiding plate, and the other end is controlled by the ninth driving member to swing up and down so that the second material guiding plate can be adjusted according to the usage requirements. One end of the eleventh driving member is fixedly connected to the first material guiding plate, and the output shaft is connected to the turning plate and opens or closes the blanking port according to the detection information of the weld quality on the corresponding impeller by the detection module.

[0017] Furthermore, there are multiple detection modules, which are arranged in one-to-one correspondence with each welding torch. The detection module includes an industrial camera, an eleventh driving member, and a baffle. The industrial camera and the eleventh driving member are fixedly arranged on the side wall of the corresponding welding torch through a connecting piece. The baffle is connected to the output shaft of the eleventh driving member to open or block the lens of the industrial camera.

[0018] Furthermore, two adjustment holes are provided on the lower supporting die along the moving direction of the output shaft of the fifth driving member. Elastic positioning components are provided on both sides of the corresponding adjustment holes by the sixth driving member. The elastic positioning component includes a guiding seat, a guiding shaft, a positioning rod, and a spring member. The guiding seat is fixedly connected to the side wall of the sixth driving member through a positioning adjustment block. The lower end of the guiding shaft is fixedly connected to the guiding seat. The positioning rod is movably arranged in the adjustment hole and its lower end is sleeved on the guiding shaft. The spring member is sleeved outside the guiding shaft to make there be a bouncing gap between the positioning rod and the guiding shaft.

[0019] On the other hand, the present invention also provides a full-automatic laser welding process method for an impeller, including the following steps:

[0020] S1: Place the to-be-processed coil on the coil feeder.

[0021] S2: The stamping device receives the coil automatically conveyed by the coil feeder, stamps and forms it, and cuts to form blades.

[0022] S3: The first transmission line conveys the blades processed by the stamping device to the turning plate inlet end of the blade bending device.

[0023] S4: The detection switch 1 feeds back the information on the in-place blades on the flap to the electric control box, and the electric control box controls the output shaft of the driving part 2 to retract, driving the blade to move axially along the lower die bar and lean against the limiting block 1;

[0024] S5: The driving part 1 drives the upper module to move downward until the two ends of the blade are bent, and then the driving part 1 drives the upper module to move upward and reset;

[0025] S6: The driving part 3 drives the flap to turn upward until the blade turns 180 degrees and is transferred to the transfer line 2;

[0026] S7: The transfer line 2 conveys the blades processed by the blade bending device to the inlet end of the chute of the transfer module;

[0027] S8: The detection switch 2 feeds back the information on the in-place blades on the chute to the electric control box, and the electric control box controls the driving part 4 to drive the dial to push the blade in the chute to move along the limiting surface into the moving seat for positioning, and controls the driving part 9 to drive the guide plate 2 to maintain the upward swing state;

[0028] S9: The electric control box controls the driving part 5 to drive the moving seat to move to the position directly above the lower supporting die for positioning, controls the driving part 4 to drive the dial to move back to its original position, and controls the driving part 8 to push the auxiliary welding electrode mandrel and the main welding electrode mandrel to close;

[0029] S10: The electric control box controls the driving part 6 to drive the lower supporting die to move upward and drive the blade arranged on the moving seat to press close to the welding electrode mandrel. After the blade detaches, the moving seat is driven by the driving part 5 controlled by the electric control box to move back to the discharging side of the chute;

[0030] S11: The electric control box controls the driving parts 7 on both sides to drive the corresponding side pressing dies to move towards the welding electrode mandrel at intervals until the middle of the blade is bent and then they reset;

[0031] S12: The electric control box controls the moving assembly to drive each welding torch to move axially along the welding electrode mandrel to weld the edge seams of the blade to form an impeller;

[0032] S13: When each welding torch moves back to its original position after welding, the electric control box controls the driving part 11 to rotate the shutter to open the lens of the industrial camera. Until after the welding torch resets, the electric control box controls the driving part 11 to rotate the shutter to block the lens of the industrial camera;

[0033] S14: The electric control box controls the driving part 6, the driving part 7, and the driving part 8 to start the return stroke and return to their original positions simultaneously;

[0034] S15: The electric control box controls the driving part 9 to drive the guide plate 2 to swing downward to the low position;

[0035] S16: The electric control box controls the pushing mechanism to push the impeller out from the main welding electrode mandrel and drop it into the blanking module through the gap between the main welding electrode mandrel and the auxiliary welding electrode mandrel;

[0036] S17: The blanking module classifies and transfers the impellers according to the detection information of the weld quality on the impellers by the detection module.

[0037] The beneficial effects of the present invention compared with the prior art are as follows: The present invention can automatically complete the processes of blade stamping and welding with high welding quality. The welds of the laser welding process are smooth and beautiful, and the next process of applying silver powder paint can be cancelled, with high processing efficiency. Description of the Drawings

[0038] Figure 1 It is a perspective view of a full-automatic laser welding production line for an impeller of the present invention;

[0039] Figure 2 It is a perspective view of the blade bending device involved in this solution;

[0040] Figure 3 It is a perspective view of the full-automatic welding device for the impeller involved in this solution;

[0041] Figure 4 It is an assembly schematic diagram of the moving seat, support bar, second limiting block, and limiting plate involved in this solution;

[0042] Figure 5 It is an assembly schematic diagram of the sixth driving part, lower support die, and elastic positioning component involved in this solution;

[0043] Figure 6 It is a plan view of the blanking module involved in this solution;

[0044] Figure 7 It is a perspective view of the blade involved in this solution.

[0045] In the figure: 1000, a feeding machine; 2000, a stamping device; 3000, a blade bending device; 3001, a first frame; 3002, a turning plate; 3003, a lower die bar; 3004, an upper die block; 3005, a first driving member; 3006, a guiding block; 3007, a first limiting block; 3008, a second driving member; 3009, a baffle; 3010, a third driving member; 4000, an impeller full-automatic welding device; 4001, a second frame; 4100, a transfer module; 4101, an inclined chute; 4101-1, a limiting surface; 4102, a moving seat; 4102-1, a concave portion; 4103, a fourth driving member; 4104, a fifth driving member; 4105, a shifting block; 4106, a supporting bar; 4106-1, a limiting portion; 4107, a second limiting block; 4108, a limiting plate; 4200, a hemming welding module; 4201, a welding electrode mandrel; 4201-1, a main welding electrode mandrel; 4201-2, a sub-welding electrode mandrel; 4202, a sixth driving member; 4203, a lower supporting die; 4203-1, an adjusting hole; 4204, a seventh driving member; 4205, a side pressing die; 4206, a moving assembly; 4207, a welding torch; 4208, a main connecting seat; 4209, an eighth driving member; 4210, a sub-connecting seat; 4211, a pushing mechanism; 42111, a pushing piece; 4212, a guiding seat; 4213, a guiding shaft; 4214, a positioning rod; 4215, a spring member; 4216, a positioning and adjusting block; 4217, a thirteenth driving member; 4218, a scraper; 4300, a detection module; 4301, an industrial camera; 4302, an eleventh driving member; 4303, a retaining piece; 4400, a blanking module; 4401, a first material guiding plate; 4402, a second material guiding plate; 4403, a turning material plate; 4404, a ninth driving member; 4405, a tenth driving member; 4406, a front baffle; 4407, a twelfth driving member; 5000, an electric control box; 6000, a first transmission line; 7000, a second transmission line. Specific embodiments

[0046] As Figure 1 , Figure 7As shown in the figure, a fully automatic laser welding production line for an impeller according to an embodiment of the present invention includes a coil feeder 1000, a stamping device 2000, a blade bending device 3000, a fully automatic impeller welding device 4000, and an electric control box 5000. A coil to be processed is provided on the coil feeder 1000. A down-drawing punch and a blade progressive die are provided in the stamping device 2000, which are used to stamp and cut the coil automatically conveyed by the coil feeder 1000 to form a blade 1. The blade bending device 3000 receives the blade 1 processed by the stamping device 2000 and preliminarily processes it to bend the two ends of the blade 1. The fully automatic impeller welding device 4000 includes a transfer module 4100, a hemming welding module 4200, a detection module 4300, and a blanking module 4400. The transfer module 4100 receives the blade 1 processed by the blade bending device 3000 and transfers and positions it to the hemming welding module 4200. The hemming welding module 4200 completes the middle bending and welding of the blade 1 step by step to form an impeller. The blanking module 4400 classifies and transfers the impeller according to the detection information of the weld quality on the impeller by the detection module 4300. A PLC control program for controlling the coordinated operation of the coil feeder 1000, the stamping device 2000, the blade bending device 3000, and the fully automatic impeller welding device 4000 is provided in the electric control box 5000. Among them, the coil feeder 1000 and the stamping device 2000 are existing structures, and automatic transmission between the stamping device 2000, the blade bending device 3000, and the fully automatic impeller welding device 4000 can be realized through common mechanisms such as robotic arm grasping or conveyor belt transportation.

[0047] Further, as Figure 1 , Figure 2 , Figure 7 shown, the blade bending device 3000 in this embodiment includes a first frame 3001, a flap 3002, a lower die bar 3003, an upper module 3004, and a first driving member 3005. The flap 3002 is arranged in the first frame 3001. There are two lower die bars 3003, which are respectively arranged on both sides of the flap 3002 to support both sides of the blade 1. There are four upper modules 3004, which are respectively arranged above the ends of the blade 1. The first driving member 3005 is fixedly connected to the first frame 3001 and is connected to the upper module 3004 to drive the upper module 3004 to move up and down. The ends of the upper module 3004 and the lower die bar 3003 have a matching first arc surface to realize the downward bending of both ends of the blade 1, which facilitates the subsequent bending and welding of the middle part of the blade 1 into an impeller.

[0048] Specifically, as Figure 1 , Figure 2 , Figure 7As shown in the figure, the blade bending device 3000 in this embodiment is connected to the stamping device 2000 through the first transmission line 6000. The output end of the first transmission line 6000 corresponds to the inlet end of the turning plate 3002. Guide blocks 3006, a first detection switch are arranged on both sides of the inlet end of the turning plate 3002, and a first limiting block 3007 is arranged away from the inlet end. A second driving part 3008 is arranged at one end of the first frame 3001 close to the first limiting block 3007, and a strong magnetic part is arranged on the output shaft of the second driving part 3008. During processing, the first detection switch feeds back the in-place information of the blade 1 on the turning plate 3002 to the electric control box 5000, and the electric control box 5000 controls the output shaft of the second driving part 3008 to retract. The blade 1 moves axially along the lower die bar 3003 under the magnetic force of the strong magnetic part and leans against the first limiting block 3007, which is convenient for accurately bending the two ends of the blade 1 downward.

[0049] At the same time, as Figure 1 , Figure 2 , Figure 7 shown, the blade bending device 3000 in this embodiment is connected to the full-automatic impeller welding device 4000 through the second transmission line 7000. The second transmission line 7000 is arranged in parallel on one side of the turning plate 3002, and a baffle 3009 is arranged on the side away from the turning plate 3002. One side of the turning plate 3002 is hinged to the first frame 3001, and a third driving part 3010 is connected below the other side. One end of the third driving part 3010 is fixedly connected to the first frame 3001, and the third driving part 3010 is electrically connected to the electric control box 5000 and used to drive the turning plate 3002 to turn upward until the blade 1 turns 180 degrees and is transferred to the second transmission line 7000. When the blade 1 is transported to the full-automatic impeller welding device 4000 through the second transmission line 7000, the two ends of the blade 1 are bent upward.

[0050] Furthermore, as Figure 1 , Figure 3 , Figure 7As shown in the figure, the transfer module 4100 in this embodiment includes an inclined chute 4101, a moving seat 4102, a fourth driving member 4103, a fifth driving member 4104, and a second detection switch. The inclined chute 4101 is fixedly arranged above the second frame 4001, and its inlet end corresponds to the output end of the second transmission line 7000. The inner bottom surface of the inclined chute 4101 is inclined so that when the blade 1 enters the inclined chute 4101, it slides down to the end and fits on the limiting surface 4101-1 of the inclined chute 4101. The moving seat 4102 is slidably connected to the second frame 4001 through a slide rail assembly and is arranged on the discharging side of the inclined chute 4101. A dial block 4105 is arranged on the output shaft of the fourth driving member 4103. The fifth driving member 4104 is fixedly arranged on the second frame 4001, and its output shaft is connected to the moving seat 4102. During processing, the second detection switch feeds back the information of the blade in place on the inclined chute 4101 to the electric control box 5000. The electric control box 5000 controls the fourth driving member 4103 to drive the dial block 4105 to push the blade 1 in the inclined chute 4101 to move along the limiting surface 4101-1 and be positioned in the moving seat 4102, and then controls the fifth driving member 4104 to drive the moving seat 4102 to reciprocate between the inclined chute 4101 and the edge wrapping and welding module 4200.

[0051] Among them, as Figure 1 , Figure 3 , Figure 4 , Figure 7 shown, the moving directions of the output shafts of the fourth driving member 4103 and the fifth driving member 4104 in this embodiment are parallel. Two support bars 4106 are fixedly arranged on the moving seat 4102 along its moving direction. A limiting portion 4106-1 is arranged on the support bar 4106 close to the inclined chute 4101. The top surface of the limiting portion 4106-1 is inclined downward towards the inclined chute 4101 to facilitate the dial block 4105 to push the blade in the inclined chute 4101 into the moving seat 4102. Two second limiting blocks 4107 are arranged on the moving seat 4102. The second limiting blocks 4107 and the limiting portion 4106-1 are arranged oppositely. Limiting plates 4108 are arranged on both sides of the moving seat 4102 perpendicular to the moving direction. The cooperation of the second limiting blocks 4107, the limiting portion 4106-1, and the limiting plates 4108 on both sides limits the blade 1 in the moving seat 4102 after it is pushed into the moving seat 4102.

[0052] Furthermore, as Figure 1 , Figure 3 , Figure 7As shown in the figure, the edge welding module 4200 in this embodiment includes a welding electrode mandrel 4201, a sixth driving member 4202, a lower supporting die 4203, a seventh driving member 4204, a side pressing die 4205, a moving assembly 4206, and a welding torch 4207. The welding electrode mandrel 4201 is fixedly arranged above the second frame 4001, and its axis is parallel to the moving direction of the output shaft of the fifth driving member 4104. One end of the sixth driving member 4202 is fixedly connected to the second frame 4001, and its output shaft is connected to the lower supporting die 4203 to drive the lower supporting die 4203 to move up and down directly below the welding electrode mandrel 4201. An inner concave portion 4102-1 that cooperates with the lower supporting die 4203 is provided on the moving seat 4102. There are two of the seventh driving member 4204 and the side pressing die 4205 respectively, and they are symmetrically arranged on the second frame 4001 on both sides of the welding electrode mandrel 4201. The side pressing die 4205 is connected to the output shaft of the seventh driving member 4204. There are adapted arc surfaces II between the welding electrode mandrel 4201, the lower supporting die 4203, and the side pressing die 4205 to enable both ends of the blade 1 to be wrapped around the welding electrode mandrel 4201. The moving assembly 4206 is fixedly arranged above the second frame 4001 on one side of the welding electrode mandrel 4201. There are multiple welding torches 4207, which are arranged side by side and movably on the moving assembly 4206, and are driven by the moving assembly 4206 to move axially along the welding electrode mandrel 4201 to weld the edge seam of the blade 1 to form an impeller. During specific processing, when the moving seat 4102 is driven by the fifth driving member 4104 to enter directly above the lower supporting die 4203, the sixth driving member 4202 drives the lower supporting die 4203 to move upward and drives the blade 1 arranged on the moving seat 4102 to approach the welding electrode mandrel 4201. After the blade 1 is separated, the moving seat 4102 is driven by the fifth driving member 4104 to move back to the blanking side of the inclined groove 4101. When the blade 1 is tightly attached to the side wall of the welding electrode mandrel 4201, the output shaft of the sixth driving member 4202 stops ascending. The side pressing dies 4205 on both sides are driven by the seventh driving member 4204 at intervals to complete the bending of the middle part of the blade 1. Both ends of the blade 1 are wrapped around the welding electrode mandrel 4201, and each welding torch 4207 is driven by the moving assembly 4206 to weld the edge seam of the blade 1 to form an impeller.

[0053] Further, as Figure 1 、 Figure 3As shown, the welding electrode mandrel 4201 in this embodiment includes a main welding electrode mandrel 4201-1 and a secondary welding electrode mandrel 4201-2 that are coaxially arranged and used in cooperation. The main welding electrode mandrel 4201-1 is fixed above the second frame 4001 through the main connecting seat 4208. The secondary welding electrode mandrel 4201-2 is connected to the output shaft of the eighth driving member 4209, and the maximum distance between the secondary welding electrode mandrel 4201-2 and the main welding electrode mandrel 4201-1 is not less than the width of the impeller. The eighth driving member 4209 is fixed above the second frame 4001 through the secondary connecting seat 4210. One end of the fourth driving member 4103 is fixedly connected to the secondary connecting seat 4210. A pushing mechanism 4211 is provided on the main connecting seat 4208. The pushing piece 42111 on the pushing mechanism 4211 can move along the axis direction of the main welding electrode mandrel 4201-1 to push the impeller 1 out of the main welding electrode mandrel 4201-1 and drop it into the blanking module 4400 through the gap between the main welding electrode mandrel 4201-1 and the secondary welding electrode mandrel 4201-2.

[0054] Among them, as Figure 1 , Figure 3 , Figure 6 , Figure 7As shown in the figure, the blanking module 4400 in this embodiment includes a first material guide plate 4401, a second material guide plate 4402, a material turning plate 4403, a ninth driving member 4404, and a tenth driving member 4405. A blanking port is provided on the first material guide plate 4401, and it is fixedly connected to the second frame 4001. One end of the second material guide plate 4402 is hinged to the first material guide plate 4401, and the other end is controlled by the ninth driving member 4404 to swing up and down and can be adjusted according to the usage requirements. One end of the tenth driving member 4405 is fixedly connected to the first material guide plate 4401, and the output shaft is connected to the material turning plate 4403 and opens or closes the blanking port according to the detection information of the detection module 4300 on the weld quality of the corresponding impeller. During specific processing, after the welding torch 4207 completes the welding process, the auxiliary electrode mandrel 4201-2 is controlled by the eighth driving member 4209 to move away from the main electrode mandrel 4201-1. The second material guide plate 4402 is controlled by the ninth driving member 4404 to swing down from the initial upswing state to the low position to receive the impeller pushed out by the pusher 42111. Then the second material guide plate 4402 is controlled by the ninth driving member 4404 to swing up, so that the impeller rolls towards the first material guide plate 4401 under the action of gravity. If the electric control box 5000 determines that the impeller is a qualified part according to the detection information of the detection module 4300, the material turning plate 4403 closes the blanking port, and the impeller rolls down along the first material guide plate 4401. If the electric control box 5000 determines that the impeller is a non-qualified part according to the detection information of the detection module 4300, the material turning plate 4403 opens the blanking port, and the impeller drops from the blanking port. And in order to prevent the impeller from rolling down naturally from the first material guide plate 4401 during the determination process of the electric control box 5000, a front baffle 4406 is movably provided in front of the blanking port on the first material guide plate 4401. The front baffle 4406 is controlled by a twelfth driving member 4407 fixed to the lower side of the first material guide plate 4401 to move up and down. In the initial state, the front baffle 4406 moves up to block the natural rolling of the impeller. If the electric control box 5000 determines that the impeller is a qualified part according to the detection information of the detection module 4300, the material turning plate 4403 closes the blanking port, and the front baffle 4406 moves down to make the impeller roll down along the first material guide plate 4401. If the electric control box 5000 determines that the impeller is a non-qualified part according to the detection information of the detection module 4300, the material turning plate 4403 opens the blanking port, and the impeller drops from the blanking port.

[0055] Further, as Figure 1 、 Figure 3As shown in the figure, there are multiple detection modules 4300 in this embodiment, which are arranged in one-to-one correspondence with each welding torch 4207. Among them, the detection module 4300 includes an industrial camera 4301, a driving member XI 4302, and a baffle 4303. The industrial camera 4301 and the driving member XI 4302 are fixedly arranged on the side wall of the corresponding welding torch 4207 through a connecting piece. The baffle 4303 is connected to the output shaft of the driving member XI 4302 and is used to open or block the lens of the industrial camera 4301. In the initial state, the baffle 4303 covers the lens of the industrial camera 4301. When the welding torch 4207 returns to its original position after completing the welding process, the driving member XI 4302 controls the baffle 4303 to rotate and open the lens of the industrial camera 4301. While the welding torch 4207 is moving, the industrial camera 4301 detects the quality of the weld seam through scanning, analysis, and comparison, and feeds the detection information back to the electric control box 5000. When the welding torch 4207 moves to the specified position and the weld seam detection is completed, the driving member XI 4302 controls the baffle 4303 to rotate and block the lens of the industrial camera 4301 again.

[0056] Further, as Figure 1 , Figure 3 , Figure 5 shown, there are two adjustment holes 4203-1 in the lower support mold 4203 of this embodiment along the moving direction of the output shaft of the driving member V 4104. The driving member VI 4202 is provided with elastic positioning components on both sides of the adjustment holes 4203-1. The elastic positioning components include a guide seat 4212, a guide shaft 4213, a positioning rod 4214, and a spring member 4215. The guide seat 4212 is fixedly connected to the side wall of the driving member VI 4202 through a positioning adjustment block 4216. The lower end of the guide shaft 4213 is fixedly connected to the guide seat 4212. The positioning rod 4214 is movably arranged in the adjustment hole 4203-1 and its lower end is sleeved on the guide shaft 4213. The spring member 4215 is sleeved outside the guide shaft 4213 and is used to make there be a bouncing gap between the positioning rod 4214 and the guide shaft 4213. The positioning rod 4214 is arranged to limit the relative position between the blade 1 on the moving seat 4102 and the lower support mold 4203.

[0057] Further, as Figure 3 shown, a driving member XIII 4217 is provided on each of the main connection seat 4208 and the sub-connection seat 4210 in this embodiment. A scraper 4218 is connected to the output shaft of the driving member XIII 4217 and is used to scrape off the slag generated after the welding torch 4207 completes the welding process.

[0058] On the other hand, the present invention also provides a full-automatic laser welding process method for an impeller, including the following steps:

[0059] S1: Place the coil material to be processed on the uncoiler 1000;

[0060] S2: The stamping device 2000 receives the coil stock automatically conveyed by the uncoiler 1000, stamps and cuts it to form blades.

[0061] S3: The first transfer line 6000 conveys the blades processed by the stamping device 2000 to the inlet end of the turning plate 3002 of the blade bending device 3000.

[0062] S4: The first detection switch feeds back the information that the blades on the turning plate 3002 are in place to the electric control box 5000. The electric control box 5000 controls the output shaft of the second driving part 3008 to retract, and drives the blades to axially move along the lower die bar 3003 and lean against the first limiting block 3007.

[0063] S5: The first driving part 3005 drives the upper die module 3004 to move downward until the two ends of the blades are bent, and then the first driving part 3005 drives the upper die module 3004 to move upward and reset.

[0064] S6: The third driving part 3010 drives the turning plate 3002 to turn upward until the blades are turned 180 degrees and transferred to the second transfer line 7000.

[0065] S7: The second transfer line 7000 conveys the blades processed by the blade bending device 3000 to the inlet end of the chute 4101 of the transfer module 4100.

[0066] S8: The second detection switch feeds back the information that the blades on the chute 4101 are in place to the electric control box 5000. The electric control box 5000 controls the fourth driving part 4103 to drive the dial block 4105 to push the blades in the chute 4101 to move along the limiting surface 4101-1 into the moving seat 4102 for positioning, and controls the ninth driving part 4404 to drive the second guide plate 4402 to maintain the upward swing state.

[0067] S9: The electric control box 5000 controls the fifth driving part 4104 to drive the moving seat 4102 to move to the position directly above the lower supporting die 4203 for positioning, controls the fourth driving part 4103 to drive the dial block 4105 to move back to its original position, and controls the eighth driving part 4209 to push the auxiliary welding electrode mandrel 4201-2 and the main welding electrode mandrel 4201-1 to close.

[0068] S10: The electric control box 5000 controls the sixth driving part 4202 to drive the lower supporting die 4203 to move upward and drive the blades arranged on the moving seat 4102 to press close to the welding electrode mandrel 4201. After the blades are separated, the electric control box 5000 controls the fifth driving part 4104 to drive the moving seat 4102 to move back to the discharging side of the chute 4101.

[0069] S11: The electric control box 5000 controls the two side driving parts 4204 to drive the corresponding side pressing dies 4205 to move towards the welding electrode mandrel 4201 at intervals until the middle parts of the blades are bent and then reset.

[0070] S12: The electric control box 5000 controls the moving assembly 4206 to drive each welding torch 4207 to axially move along the welding electrode core shaft 4201 to weld the edge seams of the blades to form an impeller;

[0071] S13: When each welding torch 4207 moves back to its original position after welding, the electric control box 5000 controls the driving member eleven 4302 to rotate the shutter 4303 to open the lens of the industrial camera 4301. Until the welding torch 4207 finishes resetting, the electric control box 5000 controls the driving member eleven 4302 to rotate the shutter 4303 to block the lens of the industrial camera 4301;

[0072] S14: The electric control box 5000 controls the driving member six 4202, the driving member seven 4204, and the driving member eight 4209 to start the return stroke and return to their original positions simultaneously;

[0073] S15: The electric control box 5000 controls the driving member nine 4404 to drive the second material guide plate 4402 to swing down to the low position;

[0074] S16: The electric control box 5000 controls the pushing mechanism 4211 to push the impeller out from the main welding electrode core shaft 4201-1 and drop it into the blanking module 4400 through the gap between the main welding electrode core shaft 4201-1 and the secondary welding electrode core shaft 4201-2;

[0075] S17: The blanking module 4400 classifies and transfers the impeller according to the detection information of the welding seam quality on the impeller by the detection module 4300.

[0076] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fully automatic impeller laser welding production line, characterized in that: include: A material unloading machine (1000), wherein the material unloading machine (1000) is provided with a coil to be processed; A punching device (2000), wherein a pull-down punch and a blade progressive die are provided therein, and is used for punching and forming the coiled material automatically conveyed by the unloading machine (1000) and cutting it to form blades; A blade bending device (3000), the blade bending device (3000) receiving the blade formed by the punching device (2000), and performing preliminary processing so that both ends of the blade are bent; An impeller fully automatic welding device (4000) is disclosed. The impeller fully automatic welding device (4000) comprises a transfer module (4100), an edge welding module (4200), a detection module (4300), and a blanking module (4400). The transfer module (4100) comprises an inclined slot (4101), a movable seat (4102), a fourth driving member (4103), a fifth driving member (4104), and a second detection switch. The inclined slot (4101) is fixedly arranged above a second frame (4001), and the inner bottom surface is inclined so that the end of the blade fits on the limiting surface (4101-1) of the inclined slot (4101). The movable seat (4102) is connected to the inclined slot (4101) through a slide rail assembly. The frame 2 (4001) is slidably connected and arranged on the unloading side of the inclined slot (4101); a shift block (4105) is arranged on the output shaft of the driving member 4 (4103); the output shaft of the driving member 5 (4104) is connected to the movable seat (4102); the transfer module (4100) receives the blade processed by the blade bending device (3000) and transfers it to the edge welding module (4200) for positioning; the edge welding module (4200) completes the middle bending and welding of the blade in steps to form an impeller; the unloading module (4400) classifies and transfers the impeller according to the detection information of the weld quality on the impeller by the detection module (4300); An electric control box (5000) is provided with a PLC control program for controlling a material unloader (1000), a punching device (2000), a blade bending device (3000), and an impeller automatic welding device (4000) to coordinate actions.

2. The impeller fully automatic laser welding production line according to claim 1 is characterized by: The blade bending device (3000) comprises a frame (3001), a flap (3002) arranged in the frame (3001), a lower mold bar (3003) arranged on the flap (3002) for supporting both sides of the blade, an upper module (3004) arranged above the end of the lower mold bar (3003), and a driving member (3005) connected to the upper module (3004) for driving the upper module (3004) to move up and down. The upper module (3004) and the end of the lower mold bar (3003) have matching arc surfaces for bending both ends of the blade.

3. The impeller fully automatic laser welding production line according to claim 2 is characterized by: The blade bending device (3000) is connected to the punching device (2000) via a transmission line 1 (6000); the output end of the transmission line 1 (6000) corresponds to the entry end of the flap (3002); guide blocks (3006) and a detection switch 1 are provided on both sides of the entry end of the flap (3002); a limit block 1 (3007) is provided away from the entry end; a drive member 2 (3008) is provided at the end of the frame 1 (3001) close to the limit block 1 (3007); a strong magnetic member is provided on the output shaft of the drive member 2 (3008); during processing, the detection switch 1 feeds back the information of the blade in position on the flap (3002) detected to the electric control box (5000); the electric control box (5000) controls the output shaft of the drive member 2 (3008) to retract, and drives the blade to move axially along the lower mold strip (3003) to the limit block 1 (3007).

4. The impeller fully automatic laser welding production line according to claim 3 is characterized by: The blade bending device (3000) is connected to the impeller automatic welding device (4000) via a second transmission line (7000). The second transmission line (7000) is arranged parallel to one side of the flap (3002) and is provided with a baffle (3009) on the side away from the flap (3002). One side of the flap (3002) is hinged to the frame one (3001) and the other side is connected to a driving member three (3010) at the bottom. The driving member three (3010) is connected to the circuit of the electric control box (5000) and is used to drive the flap (3002) to flip upward until the blade flips 180 degrees and is transferred to the second transmission line (7000).

5. The fully automatic impeller laser welding production line according to any one of claims 1 to 4, characterized in that: The output shafts of the driving member four (4103) and the driving member five (4104) are moved in parallel. The moving seat (4102) is provided with a plurality of support bars (4106) parallel to the moving direction thereof. A limiting portion (4106-1) is provided on the support bar (4106) near the inclined groove (4101). The top surface of the limiting portion (4106-1) is inclined downward toward the inclined groove (4101) to facilitate the shifting block (4105) to push the blades in the inclined groove (4101) into the moving seat (4102). The moving seat (4102) is provided with a plurality of limiting blocks two (4107) cooperating with the limiting portion (4106-1), and limiting plates (4108) are provided on both sides perpendicular to the moving direction.

6. The impeller fully automatic laser welding production line according to claim 5 is characterized by: The hemming welding module (4200) comprises a welding pole core shaft (4201), a driving member six (4202), a lower support die (4203), a driving member seven (4204), a side pressure die (4205), a moving assembly (4206), and a welding gun (4207). The welding pole core shaft (4201) is fixedly arranged above the frame two (4001), and its axis is parallel to the moving direction of the output shaft of the driving member five (4104). One end of the driving member six (4202) is fixedly connected to the frame two (4001), and its output shaft is connected to the lower support die (4203) to drive the lower support die (4203) to move up and down directly below the welding pole core shaft (4201). The moving seat (4102) is provided with an inner concave portion (4102-1) that cooperates with the lower support die (4203). The driving member There are two each of the seven (4204) and the side pressure mold (4205), and they are symmetrically arranged on the frame two (4001) on both sides of the welding pole core shaft (4201); the side pressure mold (4205) is connected to the output shaft of the driving member seven (4204); there are two matching arc surfaces between the welding pole core shaft (4201), the lower support mold (4203) and the side pressure mold (4205) to achieve that the two ends of the blade are wrapped on the welding pole core shaft (4201); the moving component (4206) is fixedly arranged above the frame two (4001) on one side of the welding pole core shaft (4201); there are multiple welding guns (4207) that are movably arranged side by side on the moving component (4206) and are driven by the moving component (4206) to move axially along the welding pole core shaft (4201) to weld the hemming seams of the blades to form an impeller.

7. The fully automatic impeller laser welding production line according to claim 6 is characterized by: The welding pole core shaft (4201) comprises a main welding pole core shaft (4201-1) and an auxiliary welding pole core shaft (4201-2) which are coaxially arranged and used in conjunction with each other. The main welding pole core shaft (4201-1) is fixed above the frame 2 (4001) via a main connecting seat (4208). The auxiliary welding pole core shaft (4201-2) is connected to the output shaft of the driving member 8 (4209) and has a maximum distance between the main welding pole core shaft (4201-1). The spacing is not less than the width of the impeller, the driving member eight (4209) is fixed above the frame two (4001) through the auxiliary connecting seat (4210), and the main connecting seat (4208) is provided with a pushing mechanism (4211) for pushing the impeller out from the main welding pole core shaft (4201-1) and dropping it from the gap between the main welding pole core shaft (4201-1) and the auxiliary welding pole core shaft (4201-2) to the unloading module (4400).

8. The impeller fully automatic laser welding production line according to claim 7 is characterized by: The material discharge module (4400) comprises a material guide plate one (4401), a material guide plate two (4402), a material turning plate (4403), a driving member nine (4404), and a driving member ten (4405); the material guide plate one (4401) is provided with a material discharge port and is fixedly connected to the frame two (4001); one end of the material guide plate two (4402) is hinged to the material guide plate one (4401), and the other end is controlled by the driving member nine (4404) to swing up and down so that the material guide plate two (4402) can adjust its state according to the use requirements; one end of the driving member ten (4405) is fixedly connected to the material guide plate one (4401), and the output shaft is connected to the material turning plate (4403), and the material discharge port is opened or closed according to the detection information of the weld quality on the corresponding impeller by the detection module (4300).

9. The fully automatic impeller laser welding production line according to claim 8 is characterized by: There are multiple detection modules (4300), which are arranged in one-to-one correspondence with each welding gun (4207). The detection module (4300) includes an industrial camera (4301), a driving member eleven (4302), and a baffle (4303). The industrial camera (4301) and the driving member eleven (4302) are fixed on the side wall of the corresponding welding gun (4207) via a connecting plate. The baffle (4303) is connected to the output shaft of the driving member eleven (4302) and is used to open or cover the lens of the industrial camera (4301).

10. The fully automatic impeller laser welding production line according to claim 6, characterized in that: The lower support mold (4203) is provided with two adjustment holes (4203-1) along the moving direction of the output shaft of the driving member five (4104); the driving member six (4202) is provided with elastic positioning components on both sides of the corresponding adjustment holes (4203-1); the elastic positioning components include a guide seat (4212), a guide shaft (4213), a positioning rod (4214), and a spring member (4215); the guide seat (4212) is fixedly connected to the side wall of the driving member six (4202) through a positioning adjustment block (4216); the lower end of the guide shaft (4213) is fixedly connected to the guide seat (4212); the positioning rod (4214) is movably arranged in the adjustment hole (4203-1), and the lower end is sleeved with the guide shaft (4213); the spring member (4215) is sleeved outside the guide shaft (4213) and is used to allow a bouncing gap to exist between the positioning rod (4214) and the guide shaft (4213).

11. A fully automatic laser welding process for an impeller, characterized in that: The fully automatic impeller laser welding production line according to claim 9 comprises the following steps: S1: placing the coil to be processed on the unwinding machine (1000); S2: The punching device (2000) receives the coiled material automatically conveyed by the unwinding machine (1000), punches and forms it, and cuts it to form blades; S3: The transmission line 1 (6000) transports the blades processed by the punching device (2000) to the entrance end of the flap (3002) of the blade bending device (3000); S4: the detection switch 1 feeds back the detected blade in-position information on the flap (3002) to the electric control box (5000), and the electric control box (5000) controls the output shaft of the driving member 2 (3008) to retract, and drives the blade to move axially along the lower mold bar (3003) to the position of the limit block 1 (3007); S5: the driving member 1 (3005) drives the upper module (3004) to move downward until both ends of the blades are bent, and the driving member 1 (3005) drives the upper module (3004) to move upward to reset; S6: the driving member 3 (3010) drives the flap (3002) to flip upward until the blade flips 180 degrees and transfers to the transmission line 2 (7000); S7: The transmission line 2 (7000) transports the blades processed by the blade bending device (3000) to the entrance end of the chute (4101) of the transfer module (4100); S8: the detection switch 2 feeds back the detected blade in-position information on the inclined slot (4101) to the electric control box (5000), and the electric control box (5000) controls the driving member 4 (4103) to drive the shifting block (4105) to push the blade in the inclined slot (4101) to move along the limiting surface (4101-1) to the movable seat (4102) for positioning, and controls the driving member 9 (4404) to drive the guide plate 2 (4402) to maintain the upper swing state; S9: the electric control box (5000) controls the driving member five (4104) to drive the moving seat (4102) to move to the upper part of the lower support mold (4203) for positioning, controls the driving member four (4103) to drive the shifting block (4105) to move and reset, and controls the driving member eight (4209) to push the auxiliary welding pole core shaft (4201-2) and the main welding pole core shaft (4201-1) to close; S10: the electric control box (5000) controls the driving member six (4202) to drive the lower support die (4203) to move upward and drive the blades provided on the movable seat (4102) to be close to the welding pole core shaft (4201); after the blades are separated, the movable seat (4102) is driven by the electric control box (5000) to control the driving member five (4104) to move back to the unloading side of the chute (4101); S11: the electric control box (5000) controls the driving members 7 (4204) on both sides to drive the corresponding side pressing dies (4205) to move toward the welding pole core shaft (4201) at intervals until the middle of the blade is bent and reset; S12: the electric control box (5000) controls the moving assembly (4206) to drive each welding gun (4207) to move axially along the welding pole core shaft (4201) to weld the hemming seams of the blades to form an impeller; S13: When each welding gun (4207) moves to reset after welding, the electric control box (5000) controls the driving member eleven (4302) to rotate the baffle (4303) to open the lens of the industrial camera (4301), until the welding gun (4207) is reset, the electric control box (5000) controls the driving member eleven (4302) to rotate the baffle (4303) to cover the lens of the industrial camera (4301); S14: the electric control box (5000) controls the driving member six (4202), the driving member seven (4204), and the driving member eight (4209) to start the return stroke at the same time; S15: The electric control box (5000) controls the driving member nine (4404) to drive the guide plate two (4402) to swing down to a low position; S16: the electric control box (5000) controls the pushing mechanism (4211) to push the impeller out of the main welding pole core shaft (4201-1) and drop the impeller from the gap between the main welding pole core shaft (4201-1) and the auxiliary welding pole core shaft (4201-2) to the unloading module (4400); S17: The unloading module (4400) classifies and transfers the impellers according to the inspection information of the weld quality on the impellers by the inspection module (4300).

Images