Positioning and machining device for centrifugal pump accessories

Abstract

The invention relates to the technical field of centrifugal pump accessory positioning and machining, in particular to a centrifugal pump accessory positioning and machining device which is characterized in that a lifting mechanism and a rotating mechanism are arranged on the front side of a lifting console up and down, a positioning mechanism is arranged on the lifting mechanism, and a welding mechanism is arranged on the positioning mechanism; through cooperation of the positioning mechanism and the welding mechanism, the blades can be rapidly put, discharged and precisely guided and positioned, and the discharged and positioned blades can be rapidly connected to be fastened and abutted tightly and synchronously welded at the inner end and the outer end; according to the invention, through cooperation of the slewing mechanism and the lifting mechanism, not only can rapid transposition adjustment be carried out on a flat cover plate which completes blade welding and a flat cover plate which is not welded with a blade, but also blade positioning welding processing can be carried out on the flat cover plate which is not welded with the blade at the same time; and the arc-shaped cover plate on the flat cover plate subjected to blade welding is pressed and positioned so as to be matched with external welding equipment for welding machining.

Description

Technical Field

[0001] The present invention relates to the technical field of positioning and processing of centrifugal pump accessories, and specifically relates to a positioning and processing device for centrifugal pump accessories. Background Art

[0002] A centrifugal pump is a mechanical device that uses the centrifugal force generated by a rotating impeller to transport liquids. Among them, the impeller is the core component of the centrifugal pump. The impeller is usually assembled and welded by an arc-shaped cover plate, a flat cover plate riveted with a hub, and multiple blades; in the prior art, during the assembly and welding process of the impeller, it is usually necessary to first place and position a single blade at the corresponding position on the upper side of the flat cover plate through a material-taking robotic arm, and then use a welding robotic arm to spot-weld and fix the inner and outer end parts of the blade in contact with the upper side of the flat cover plate respectively. Then, the above operations are repeated until all the blades are welded and fixed on the upper side of the flat cover plate. Then, the arc-shaped cover plate is placed in position and pressed against the arc-shaped ends of all the blades, and finally, the welding robotic arm is used to weld and fix the positions where the arc-shaped ends of the blades are in contact with the lower side of the arc-shaped cover plate.

[0003] However, the traditional method of positioning and welding the impeller blades has the following problems: 1. In the prior art, when welding multiple blades on a single impeller, the material-taking robotic arm generally needs to perform multiple repeated material-taking and positioning operations. The above positioning method not only has relatively cumbersome overall operation steps, but also has a high overall working intensity, large loss, and high maintenance cost of the material-taking robotic arm, and the overall positioning and placement speed of the blades is slow and the efficiency is low, resulting in a low overall welding processing efficiency of the impeller; 2. In the prior art, during the welding process of the blade positioned and placed by the welding robotic arm, the material-taking robotic arm needs to always maintain the clamping and positioning of the blade and cannot simultaneously perform the material-taking and positioning of the next blade. During the material-taking and positioning process of the clamping robotic arm, the welding robotic arm cannot simultaneously perform welding on other blades. The above operation method not only results in poor continuity of welding between the blades and low overall assembly and welding efficiency of the impeller, but also results in poor overall cooperation effect and low efficiency of the processing equipment, resulting in low overall processing and forming efficiency of the impeller and the centrifugal pump. Summary of the Invention

[0004] To achieve the above object, the present invention provides the following technical solution: A positioning and processing device for centrifugal pump accessories, used for assembling and welding an impeller. The impeller includes a flat cover plate, a hub, blades, and an arc-shaped cover plate. The positioning and processing device includes a lifting control console. A lifting mechanism and a rotary mechanism are arranged up and down on the front side of the lifting control console. A positioning mechanism for positioning the blades is arranged on the lifting mechanism, and a welding mechanism is arranged on the positioning mechanism.

[0005] The slewing mechanism comprises a slewing control console installed at the front side of the lifting control console, a slewing control console is provided with a slewing adjustment part, and an inner support part for positioning the flat cover is provided on the slewing control console.

[0006] The lifting mechanism comprises a lifting guide rail installed on the front side of the lifting console, an electric lifting platform which moves up and down is slidably arranged on the lifting guide rail, and a pressing part for pressing the arc-shaped cover plate is arranged at the front end of the lower side of the electric lifting platform.

[0007] The positioning mechanism includes a plurality of connecting rods evenly fixedly arranged on the lower side of the electric lifting platform, a fixing frame is commonly fixedly arranged at the lower ends of all the connecting rods, a rotating driving part is arranged on the fixing frame, a positioning part for positioning the blades is arranged on the rotating driving part, and a docking part for docking with the hub is arranged on the positioning part.

[0008] The welding mechanism comprises a material cutting part which is centrally symmetrically arranged on the rotating driving part for cutting the blades, a fastening part which presses the positioned blades, and a welding part which welds the inner and outer ends of the positioned blades.

[0009] Preferably, the rotation adjustment part includes an electric turntable rotatably mounted on a turntable control console, a supporting platform is fixedly arranged on the electric turntable, a rotating disk is symmetrically mounted on the supporting platform for rotation front and back, a gear ring is fixedly arranged on the lower side of the rotating disk, a motor 1 is symmetrically fixedly arranged on the lower side of the supporting platform for rotation front and back, and a gear meshing with the corresponding gear ring is fixedly arranged on the driving end of the motor 1.

[0010] Preferably, the inner support part includes a fixed truncated table fixedly arranged at the center of the corresponding rotating disk, a pneumatic cylinder is fixedly arranged on the lower side of the fixed truncated table, a driving column which moves up and down is fixedly arranged on the telescopic end of the pneumatic cylinder, a plurality of linear grooves are evenly arranged on the upper side of the fixed truncated table in the circumference, a sliding shaft is slidingly arranged in the linear groove, an inner support plate is fixedly arranged on the upper end of the sliding shaft, and the inner support plate and the driving column are connected by a transmission rod hinged up and down.

[0011] Preferably, the abutting portion comprises a plurality of connecting columns evenly and fixedly arranged on the lower side of the electric lifting platform, an annular swivel seat is commonly and fixedly arranged at the lower ends of all the connecting columns, and a abutting swivel ring is rotatably arranged on the lower side of the annular swivel seat.

[0012] Preferably, the rotating drive unit includes a second motor fixedly mounted on the upper side of the fixed frame, a driving end of the second motor is fixedly mounted with a rotating shaft rotatably connected to the fixed frame, a rotating table is fixedly mounted on the lower side of the rotating shaft, and a linkage plate is fixedly mounted symmetrically on the side surface of the rotating table.

[0013] Preferably, the positioning part includes a positioning table rotatably arranged on the rotating table. A plurality of feeding racks are circumferentially and evenly fixed on the positioning table. An arc-shaped feeding groove penetrating up and down is formed in each feeding rack. A guiding groove located outside the feeding racks is formed on the upper surface of the positioning table. The guiding groove includes a plurality of obliquely-arranged arc grooves circumferentially and evenly distributed and an obliquely-arranged straight groove connecting the corresponding ends of two adjacent obliquely-arranged arc grooves, wherein the obliquely-arranged straight groove is shorter and the obliquely-arranged arc groove is longer.

[0014] Preferably, the docking part includes a plurality of L-shaped connecting racks circumferentially and evenly fixed on the lower side of the positioning table and located inside the corresponding feeding racks. A docking cover for plugging and aligning with the hub is fixedly arranged on the horizontal sections of all the L-shaped connecting racks. A plurality of rivet docking holes penetrating up and down and corresponding to the rivets on the hub are circumferentially and evenly formed in the docking cover.

[0015] Preferably, the blanking part includes a feeding rack fixedly arranged on the side surface of the corresponding linkage plate. A blanking groove penetrating up and down is formed in the feeding rack. A plurality of blades are slidably arranged up and down evenly in the blanking groove. A notch is formed at the lower end of the feeding rack and on the side far from the corresponding linkage plate. A spring rod is elastically slidably arranged on the feeding rack on the side far from the corresponding linkage plate through a support. A material supporting block slidably docked with the corresponding notch is fixedly arranged at one end of the spring rod close to the corresponding feeding rack. A first ball is rotatably arranged on the side of the material supporting block far from the corresponding spring rod. A driven shaft slidably matched with the guiding groove is fixedly arranged at one end of the spring rod far from the corresponding material supporting block through a connecting block.

[0016] Preferably, the fastening part includes an annular sliding groove formed on the upper surfaces of the positioning table and the middle parts of all the feeding racks. A sleeve is fixedly arranged on the upper side of the linkage plate. A pressing column slidably penetrating up and down through the corresponding linkage plate and slidably matched with the annular sliding groove is elastically slidably arranged in the sleeve. A second ball is rotatably arranged at the lower end of the pressing column.

[0017] Preferably, the welding part includes an inner welding gun installed on the lower side of the rotating table through a support two. An L-shaped connecting plate is fixedly arranged at one end of the linkage plate far from the rotating table and on the side close to the corresponding feeding rack. An outer welding gun is installed on the vertical section of the L-shaped connecting plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. Through the cooperation of the positioning mechanism and the welding mechanism, the present invention can not only quickly drop and feed the blades and accurately guide and position them, but also quickly connect to firmly press and tightly hold the blades positioned and fed, and synchronously weld the inner and outer ends. Thus, it not only ensures the accuracy and stability of the blade positioning and welding process, but also greatly simplifies the overall operation steps of the blade positioning and welding process, reduces the overall maintenance cost of the equipment, improves the continuity of the overall blade welding process and the efficiency of the overall impeller assembly and welding process, and further improves the overall processing and forming efficiency of the impeller and the centrifugal pump.

[0020] 2. Through the cooperation of the rotary mechanism and the lifting mechanism, the present invention can not only quickly switch and adjust the flat covers with welded blades and the flat covers with unwelded blades, but also simultaneously perform blade positioning and welding on the flat covers with unwelded blades, and press and position the arc-shaped covers on the flat covers with welded blades to cooperate with external welding equipment for welding. Thus, not only can the welding of the arc-shaped covers and the blades on the same impeller be quickly connected and carried out, but also the welding of the arc-shaped covers and the blades on different impellers can be carried out simultaneously, and further improves the efficiency of the overall impeller assembly and welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the present invention.

[0022] Figure 2 It is a partial sectional schematic diagram of a part of the structure of the present invention.

[0023] Figure 3 It is a partial sectional schematic diagram of a part of the rotary mechanism.

[0024] Figure 4 It is a partial sectional schematic diagram of a part of the inner support part.

[0025] Figure 5 It is a partial sectional schematic diagram of a part of the positioning mechanism.

[0026] Figure 6 It is a partial sectional schematic diagram of a part of the rotation drive part.

[0027] Figure 7 It is Figure 6 The enlarged schematic diagram at A in

[0028] Figure 8 It is a schematic diagram of a part of the structure of the positioning part.

[0029] Figure 9 It is a partial sectional schematic diagram of a part of the docking part.

[0030] Figure 10 It is a partial sectional schematic diagram of a part of the welding mechanism.

[0031] Figure 11 is Figure 10 the enlarged schematic view of part B in

[0032] Figure 12 the partial sectional view of the partial structure of the welding part.

[0033] In the figure: 1. Impeller; 11. Flat cover plate; 12. Hub; 13. Blade; 14. Arc cover plate; 2. Lifting control console; 3. Rotary mechanism; 31. Rotary control console; 32. Rotary adjustment part; 321. Electric rotary table; 322. Support table; 323. Rotary disk; 324. Tooth ring; 325. Motor 1; 326. Gear; 33. Inner support part; 331. Fixed round table; 332. Pneumatic cylinder; 333. Driving column; 334. Slide shaft; 335. Inner support plate; 4. Lifting mechanism; 41. Lifting guide rail; 42. Electric lifting table; 43. Tightening part; 431. Connecting column; 432. Ring-shaped rotating base; 433. Tightening rotating ring; 5. Positioning mechanism; 51. Connecting rod; 52. Fixed frame; 53. Rotary driving part; 531. Motor 2; 532. Rotating shaft; 533. Rotating table; 534. Linking plate; 54. Positioning part; 541. Positioning table; 542. Feeding frame; 543. Arc-shaped feeding groove; 544. Guide groove; 55. Docking part; 551. L-shaped connecting frame; 552. Docking cover; 553. Rivet docking hole; 6. Welding mechanism; 61. Feeding part; 611. Feeding rack; 612. Supporting block; 613. Driven shaft; 62. Tightening part; 621. Ring-shaped sliding groove; 622. Sleeve; 623. Tightening column; 63. Welding part; 631. Inner welding torch; 632. L-shaped connecting plate; 633. Outer welding torch. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figure 1 and Figure 3A centrifugal pump accessory positioning and processing device is used for assembling and welding an impeller 1. The impeller 1 includes a flat cover plate 11, a hub 12, blades 13 and an arc-shaped cover plate 14, wherein the vertical side of the blade 13 close to the center of the flat cover plate 11 is longer, and the vertical side away from the center of the flat cover plate 11 is shorter. The positioning and processing device includes a lifting control console 2, and a lifting mechanism 4 and a rotating mechanism 3 are arranged on the upper and lower sides of the front side of the lifting control console 2. A positioning mechanism 5 for positioning and placing the blade 13 is arranged on the lifting mechanism 4, and a welding mechanism 6 is arranged on the positioning mechanism 5.

[0036] See also Figure 1 and Figure 3 The slewing mechanism 3 includes a slewing control console 31 installed on the front side of the lifting control console 2. The slewing control console 31 is provided with a rotation adjustment portion 32. The rotation adjustment portion 32 is provided with an inner support portion 33 for positioning the flat cover plate 11 and the wheel hub 12.

[0037] See also Figure 1 , Figure 2 and Figure 3 The rotation adjustment part 32 includes an electric turntable 321 rotatably mounted on the rotation control console 31, a supporting platform 322 is fixedly arranged on the electric turntable 321, a rotating disk 323 is rotatably mounted on the supporting platform 322 in a front-to-back symmetrical manner, a gear ring 324 is fixedly arranged on the lower side of the rotating disk 323, a motor 325 is fixedly arranged on the lower side of the supporting platform 322 in a front-to-back symmetrical manner, and a gear 326 meshingly connected to the corresponding gear ring 324 is fixedly arranged on the driving end of the motor 325.

[0038] See also Figure 3 and Figure 4 The inner support part 33 includes a fixed truncated table 331 fixedly arranged at the center of the corresponding rotating disk 323, a pneumatic cylinder 332 is fixedly arranged on the lower side of the fixed truncated table 331, a driving column 333 that moves up and down is fixedly arranged on the telescopic end of the pneumatic cylinder 332, a plurality of linear grooves are evenly opened on the upper side of the fixed truncated table 331 in the circumferential direction, a sliding shaft 334 is slidingly arranged in the linear groove, an inner support plate 335 is fixedly arranged on the upper end of the sliding shaft 334, and the inner support plate 335 is connected to the driving column 333 through a transmission rod hinged up and down.

[0039] The flat cover plate 11 riveted with the wheel hub 12 is inserted into the outer side of the inner support plate 335, and then the driving column 333 is driven downward by the pneumatic cylinder 332. The driving column 333 then drives the inner support plate 335 and its corresponding sliding shaft 334 to move along the corresponding linear groove away from the driving column 333 through the transmission rod until the inner support plate 335 is stably pressed against the inner surface of the wheel hub 12, thereby stably fixing the flat cover plate 11 riveted with the wheel hub 12 on the rotating disk 323.

[0040] Drive the electric slewing table 321 to rotate 180 degrees through the slewing control console 31. The electric slewing table 321 then drives the supporting table 322 and the rotating disk 323 mounted thereon to rotate synchronously. The rotating disk 323 then drives the flat cover plate 11 fixed on the upper side to rotate 180 degrees synchronously, so that the flat cover plate 11 on the front side can be rotated and adjusted to the rear side, and the flat cover plate 11 on the rear side can be rotated and adjusted to the front side; drive the gear 326 to rotate through the first motor 325. The gear 326 then meshes and drives with the corresponding toothed ring 324, and the toothed ring 324 then drives the corresponding rotating disk 323 and the flat cover plate 11 fixed on the upper side thereof to rotate and adjust synchronously.

[0041] Please refer to Figure 1 and Figure 2 , the lifting mechanism 4 includes a lifting guide rail 41 installed on the front side of the lifting control console 2. An electric lifting table 42 that moves up and down is slidably arranged on the lifting guide rail 41. A pressing and tightening part 43 for pressing and tightening the arc-shaped cover plate 14 is arranged at the front end of the lower side of the electric lifting table 42.

[0042] Please refer to Figure 1 and Figure 2 , the pressing and tightening part 43 includes a plurality of connecting columns 431 uniformly and fixedly arranged on the lower side of the electric lifting table 42. A circular rotating base 432 is fixedly arranged at the lower ends of all the connecting columns 431. A pressing and tightening rotating ring 433 is rotatably arranged on the lower side of the circular rotating base 432.

[0043] Please refer to Figure 1 , Figure 5 and Figure 6 , the positioning mechanism 5 includes a plurality of connecting rods 51 uniformly and fixedly arranged on the lower side of the electric lifting table 42 and located behind the pressing and tightening part 43. A fixing frame 52 is fixedly arranged at the lower ends of all the connecting rods 51. A rotating driving part 53 is arranged on the fixing frame 52. A positioning part 54 for positioning and placing the blade 13 is arranged on the rotating driving part 53. A docking part 55 for docking and positioning with the hub 12 is arranged on the positioning part 54.

[0044] Please refer to Figure 5 and Figure 6 , the rotating driving part 53 includes a second motor 531 fixedly arranged on the upper side of the fixing frame 52. A rotating shaft 532 that is rotatably connected to the fixing frame 52 is fixedly arranged at the driving end of the second motor 531. A rotating table 533 is fixedly arranged at the lower side of the rotating shaft 532. Linking plates 534 are symmetrically fixedly arranged at the center of the side surface of the rotating table 533.

[0045] Please refer to Figure 5 , Figure 6 and Figure 8, the positioning part 54 includes a positioning table 541 rotatably arranged on the rotating table 533. A plurality of material guiding frames 542 are fixedly arranged on the positioning table 541 circumferentially and evenly. An arc-shaped material guiding groove 543 penetrating up and down is formed in the material guiding frame 542. A guiding groove 544 located outside the material guiding frame 542 is formed on the upper surface of the positioning table 541. The guiding groove 544 includes a plurality of obliquely-arc grooves circumferentially and evenly distributed and an obliquely-straight groove connecting the corresponding ends of two adjacent obliquely-arc grooves, wherein the obliquely-straight groove is shorter and the obliquely-arc groove is longer.

[0046] Please refer to Figure 3 , Figure 6 and Figure 9 , the docking part 55 includes a plurality of L-shaped connecting frames 551 fixedly arranged on the lower side of the positioning table 541 circumferentially and evenly and located inside the corresponding material guiding frames 542. A docking cover 552 for docking and inserting with the hub 12 is fixedly arranged on the horizontal sections of all the L-shaped connecting frames 551 together. A plurality of rivet docking holes 553 penetrating up and down and corresponding to the rivets on the hub 12 one by one are circumferentially and evenly formed in the docking cover 552. For convenient docking, chamfering treatment can be carried out on the upper ends of the rivet docking holes 553.

[0047] First, fixedly install a flat cover plate 11 riveted with the hub 12 on the upper side of the front rotating disk 323 through an inner support plate 335. Then, rotate and adjust it to the rear side through the electric rotary table 321 to be positioned with the upper positioning table 541 and the docking cover 552. Then, control the electric lifting table 42 to move downward along the lifting guide rail 41 through the lifting control console 2. The electric lifting table 42 drives the fixed frame 52 and the rotating table 533 to move downward synchronously through the connecting rod 51. The rotating table 533 drives the positioning table 541 and the L-shaped connecting frames 551 on its lower side to move downward synchronously. The L-shaped connecting frames 551 drive the docking cover 552 to move downward synchronously until the docking cover 552 is inserted into the outside of the hub 12 in a docking manner. At the same time, drive the rotating disk 323 through the motor one 325 to drive the flat cover plate 11 and the hub 12 to rotate and adjust, so that the rivet docking holes 553 on the docking cover 552 can be stably docked and inserted with the rivets on the hub 12, thereby stably positioning the positioning table 541 and the flat cover plate 11 together so that they cannot rotate relative to each other.

[0048] Please refer to Figure 1 and Figure 5 , the welding mechanism 6 includes a blanking part 61 for blanking the blades 13 symmetrically arranged at the center on the rotating driving part 53, a fastening part 62 for pressing and fastening the positioned and placed blades 13, and a welding part 63 for welding the inner and outer ends of the positioned and placed blades 13.

[0049] Please refer to Figure 5 , Figure 10 and Figure 11, the blanking part 61 includes a feeding rack 611 fixedly arranged on the side surface of the corresponding linkage plate 534. A blanking groove penetrating up and down is formed in the feeding rack 611. A plurality of blades 13 are slidably arranged up and down evenly in the blanking groove. A notch is formed at the lower end of the feeding rack 611 and on the side far from the corresponding linkage plate 534. A spring rod is elastically slidably arranged on the feeding rack 611 on the side far from the corresponding linkage plate 534 through a first support. A material supporting block 612 slidably butted with the corresponding notch is fixedly arranged at one end of the spring rod close to the corresponding feeding rack 611. A first ball is rotatably arranged on the side of the material supporting block 612 far from the corresponding spring rod. A driven shaft 613 slidably matched with the guiding groove 544 is fixedly arranged at one end of the spring rod far from the corresponding material supporting block 612 through a connecting block.

[0050] When positioning and placing the blades 13 on the upper side of the flat cover plate 11 fixed on the rearward rotating disc 323, the motor two 531 drives the rotating shaft 532 and the rotating table 533 to rotate directionally (as Figure 10 shown by the arrow). The rotating table 533 drives the corresponding feeding rack 611 to rotate synchronously through the linkage plate 534. The driven shaft 613 drives the corresponding spring rod and the material supporting block 612 to move in the direction away from the corresponding notch by slidingly matching with the corresponding inclined arc groove in the guiding groove 544 until the material supporting block 612 moves out of the notch and cannot support the blades 13 on its upper side. The blade 13 and all the blades 13 above it move downward synchronously along the blanking groove for a certain distance until the lower end of the blade 13 contacts the upper surface of the positioning table 541. Immediately afterwards, the blanking groove in the feeding rack 611 aligns with the corresponding arc-shaped material guiding groove 543. The blade 13 falls downward into the corresponding arc-shaped material guiding groove 543 under the action of its own weight. At the same time, the driven shaft 613 just moves into the corresponding inclined straight groove and moves in the direction of the material supporting block 612 under the action of the corresponding spring rod. The material supporting block 612 also moves into the corresponding notch and contacts the shorter vertical side of the blade 13 falling into the corresponding material guiding frame 542 until the vertical short side of the blade 13 is completely separated from the material supporting block 612. The material supporting block 612 then completely moves into the corresponding notch again and stably supports the blade 13 falling immediately above it. The blade 13 falling into the material guiding frame 542 is stably positioned and placed at the corresponding position on the upper side of the flat cover plate 11 under the action of its own weight. Repeat the above operations until all the blades 13 in the feeding rack 611 are put into each material guiding frame 542 and are stably positioned and placed at the corresponding positions on the upper side of the flat cover plate 11. The first ball on the material supporting block 612 can reduce the friction with the shorter vertical side of the blade 13 falling into the material guiding frame 542.

[0051] Please refer to Figure 6 、 Figure 7 、 Figure 8 and Figure 10, the fastening part 62 includes an annular sliding groove 621 formed on the positioning table 541 and the upper surfaces of the middle parts of all the material guiding frames 542. A sleeve 622 is fixedly arranged on the upper side of the linkage plate 534. An abutting column 623 that slides up and down through the corresponding linkage plate 534 and is in sliding fit with the annular sliding groove 621 is elastically slidably arranged in the sleeve 622. A second ball is rotatably arranged at the lower end of the abutting column 623.

[0052] When the rotating table 533 drives the feeding rack 611 to rotate towards the material guiding frame 542 at the next adjacent position through the linkage plate 534, the sleeve 622 drives the abutting column 623 to rotate synchronously along the annular sliding groove 621. When the feeding rack 611 is aligned with the material guiding frame 542 at the next adjacent position and the blade 13 is put into the corresponding arc-shaped material guiding groove 543, the abutting column 623 slides synchronously along the annular sliding groove 621 to the upper side of the blade 13 that has been positioned and placed on the upper side of the flat cover plate 11. Under the action of the sleeve 622, the abutting column 623 stably presses the blade 13 at a specific position on the upper side of the flat cover plate 11, so that the lower end surface of the blade 13 can be stably and tightly attached to the upper surface of the flat cover plate 11.

[0053] Please refer to Figure 5 , Figure 6 and Figure 12 , the welding part 63 includes an inner welding gun 631 installed on the lower side of the rotating table 533 through a second support. An L-shaped connecting plate 632 is fixedly arranged at one end of the linkage plate 534 far from the rotating table 533 and on the side close to the corresponding feeding rack 611. An outer welding gun 633 is installed on the vertical section of the L-shaped connecting plate 632.

[0054] When the rotating table 533 drives the abutting column 623 to press down and fasten the blade 13 that has been positioned and placed on the upper side of the flat cover plate 11 following the feeding rack 611 through the linkage plate 534, the rotating table 533 drives the inner welding gun 631 to rotate synchronously and aligns the welding end of the inner welding gun 631 with the inner end of the lower end surface of the blade 13. Since the vertical section of the L-shaped connecting frame 551 is outside the overall rotation trajectory of the inner welding gun 631, it will not cause interference to the rotational welding operation of the inner welding gun 631. At the same time, the rotating table 533 also drives the L-shaped connecting plate 632 and its corresponding outer welding gun 633 to rotate synchronously through the linkage plate 534 and aligns the welding end of the outer welding gun 633 with the outer end of the lower end surface of the blade 13. At this time, the inner and outer ends of the lower end surface of the blade 13 can be spot-welded synchronously through the inner welding gun 631 and the outer welding gun 633. Thus, after the feeding rack 611 feeds the material, the fastened and welded processing of the blade 13 that has been positioned and placed can be carried out immediately. Repeat the above feeding and fastening welding operations until all the blades 13 positioned and placed at the corresponding positions on the flat cover plate 11 are welded and fixed.

[0055] The above operation method can not only achieve the rapid dropping and precise guiding and positioning of the blade 13, but also quickly connect to firmly press and synchronously weld the inner and outer ends of the blade 13 that has been positioned for feeding, thereby not only ensuring the accuracy and stability of the positioning and welding process of the blade 13, but also greatly simplifying the overall operation steps of the positioning and welding process of the blade 13, improving the continuity of the overall welding process of the blade 13 and the efficiency of the overall assembly and welding process of the impeller 1.

[0056] Before completing the welding process of the blade 13 on the upper flat cover plate 11 of the rear rotating disk 323, first fixedly install a new flat cover plate 11 riveted with the hub 12 on the front rotating disk 323. After the welding process of the blade 13 on the rear flat cover plate 11 is completed, first move the electric lifting table 42 upward to reset, then rotate and adjust it to the front side through the electric rotary table 321, and then stably position and place the arc-shaped cover plate 14 on the arc-shaped ends of all the blades 13 through the external conveying device. The flat cover plate 11 of the blade 13 that has not been welded on the front side is then rotated and adjusted to the rear side. Then, drive the positioning mechanism 5 and the welding mechanism 6 to move downward through the electric lifting table 42 to perform the welding process on the flat cover plate 11 of the blade 13 that has not been welded on the rear side. At the same time, the connecting column 431 also synchronously drives the pressing ring 433 on the annular rotating base 432 to move downward and press tightly on the upper side of the arc-shaped cover plate 14, so that the arc-shaped cover plate 14 is stably attached to the arc-shaped ends of the blades 13. Then, drive the flat cover plate 11 and the arc-shaped cover plate 14 on the front side to rotate and adjust at a fixed angle synchronously through the rotating disk 323. The pressing ring 433 also rotates synchronously and always presses tightly on the upper side of the arc-shaped cover plate 14. At the same time, cooperate with the rotating disk 323 through the external welding device to stably weld each blade 13 to the arc-shaped cover plate 14 in sequence, thereby completing the overall welding and assembly of the impeller 1. Finally, convey and discharge the impeller 1 through the external conveying device, and fixedly install a new flat cover plate 11 riveted with the hub 12 on the front rotating disk 323.

[0057] The above operation method can not only achieve the rapid conversion and adjustment between the flat cover plate 11 with the welded blade 13 and the flat cover plate 11 with the non-welded blade 13, but also simultaneously perform the positioning and welding process of the blade 13 on the flat cover plate 11 with the non-welded blade 13, and press and position the arc-shaped cover plate 14 on the flat cover plate 11 with the welded blade 13 to cooperate with the external welding device for welding, thereby not only enabling the welding process between the arc-shaped cover plate 14 and the blade 13 on the same impeller 1 to be quickly connected, but also enabling the welding process between the arc-shaped cover plate 14 and the blade 13 on different impellers 1 to be carried out simultaneously, further improving the efficiency of the overall assembly and welding process of the impeller 1.

[0058] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A centrifugal pump parts positioning and processing device, used for assembling and welding an impeller, the impeller comprising a flat cover plate, a hub, blades and an arc-shaped cover plate, the positioning and processing device comprising a lifting console, characterized in that: The front side of the lifting console is provided with a lifting mechanism and a rotating mechanism, the lifting mechanism is provided with a positioning mechanism for positioning the blades, and the positioning mechanism is provided with a welding mechanism; The slewing mechanism comprises a slewing console installed at the front side of the lifting console, the slewing console is provided with a slewing adjustment part, and the slewing adjustment part is provided with an inner support part for positioning the flat cover plate; The lifting mechanism comprises a lifting guide rail installed on the front side of the lifting console, an electric lifting platform that moves up and down is slidably arranged on the lifting guide rail, and a pressing part for pressing the arc-shaped cover plate is arranged at the front end of the lower side of the electric lifting platform; The positioning mechanism comprises a plurality of connecting rods uniformly fixedly arranged at the lower side of the electric lifting platform, a fixing frame is fixedly arranged at the lower ends of all the connecting rods, a rotating driving part is arranged on the fixing frame, a positioning part for positioning the blade is arranged on the rotating driving part, and a docking part for docking with the hub is arranged on the positioning part; The welding mechanism comprises a material cutting part which is centrally symmetrically arranged on the rotating driving part for cutting the blades, a fastening part which presses the positioned blades, and a welding part which welds the inner and outer ends of the positioned blades.

2. A centrifugal pump parts positioning and processing device according to claim 1, characterized in that: The rotation adjustment part includes an electric turntable rotatably mounted on the turntable control console, a supporting platform is fixedly arranged on the electric turntable, a rotating disk is symmetrically mounted on the supporting platform for rotation front and back, a gear ring is fixedly arranged on the lower side of the rotating disk, a motor 1 is symmetrically fixedly arranged on the lower side of the supporting platform for rotation front and back, and a gear meshingly connected to the corresponding gear ring is fixedly arranged on the driving end of the motor 1.

3. A centrifugal pump parts positioning and processing device according to claim 2, characterized in that: The inner support part includes a fixed truncated table fixedly arranged at the center of the corresponding rotating disk, a pneumatic cylinder is fixedly arranged on the lower side of the fixed truncated table, a driving column that moves up and down is fixedly arranged on the telescopic end of the pneumatic cylinder, a plurality of linear grooves are evenly opened in the circumference of the upper side of the fixed truncated table, a sliding shaft is slidably arranged in the linear groove, an inner support plate is fixedly arranged on the upper end of the sliding shaft, and the inner support plate and the driving column are connected by a transmission rod hinged up and down.

4. A centrifugal pump parts positioning and processing device according to claim 1, characterized in that: The abutting part comprises a plurality of connection columns evenly and fixedly arranged at the lower side of the electric lifting platform, an annular rotating seat is commonly and fixedly arranged at the lower ends of all the connection columns, and a abutting rotating ring is rotatably arranged at the lower side of the annular rotating seat.

5. The centrifugal pump parts positioning and processing device according to claim 1, characterized in that: The rotary drive unit includes a second motor fixedly arranged on the upper side of a fixed frame, a driving end of the second motor is fixedly provided with a rotating shaft rotatably connected to the fixed frame, a rotating table is fixedly arranged on the lower side of the rotating shaft, and a linkage plate is fixedly arranged on the side surface of the rotating table with center symmetry.

6. A centrifugal pump parts positioning and processing device according to claim 5, characterized in that: The positioning part includes a positioning table rotatably arranged on a rotating table, a plurality of material guide racks are evenly and fixedly arranged on the positioning table in a circumferential direction, an arc-shaped material guide groove penetrating up and down is provided in the material guide rack, a guide groove located outside the material guide rack is provided on the upper surface of the positioning table, the guide groove includes a plurality of oblique arc grooves evenly distributed in the circumferential direction and an oblique straight groove connecting the corresponding ends of two adjacent oblique arc grooves, wherein the oblique straight groove is shorter and the oblique arc groove is longer.

7. A centrifugal pump parts positioning and processing device according to claim 6, characterized in that: The docking portion includes a plurality of L-shaped connecting frames which are evenly and circumferentially fixed on the lower side of the positioning platform and located on the inner side of the corresponding material guide frame. A docking cover which is aligned with the wheel hub is fixedly arranged on the horizontal sections of all the L-shaped connecting frames. The docking cover is evenly and circumferentially provided with a plurality of rivet docking holes which penetrate vertically and correspond one by one to the rivets on the wheel hub.

8. A centrifugal pump parts positioning and processing device according to claim 6, characterized in that: The feeding part includes a feeding rack fixedly arranged on the side surface of the corresponding linkage plate, a feeding rack is provided with a feeding trough which passes through up and down, a plurality of blades are evenly slidably arranged in the feeding trough, a notch is provided at the lower end of the feeding rack and on the side away from the corresponding linkage plate, a spring rod is elastically slidably arranged through a support on the side of the feeding rack away from the corresponding linkage plate, a supporting block which is slidably docked with the corresponding notch is fixedly arranged on one end of the spring rod close to the corresponding feeding rack, a ball bearing is rollingly arranged on the side of the supporting block away from the corresponding spring rod, and a driven shaft which slidably cooperates with the guide groove is fixedly arranged on one end of the spring rod away from the corresponding supporting block through a connecting block.

9. A centrifugal pump parts positioning and processing device according to claim 6, characterized in that: The fastening part includes an annular slide groove commonly opened on the upper surface of the positioning platform and the middle part of all the material guide frames. A sleeve is fixedly arranged on the upper side of the linkage plate. A tightening column is elastically slidably arranged in the sleeve, which slides up and down and passes through the corresponding linkage plate and slides with the annular slide groove. A ball 2 is rolled on the lower end of the tightening column.

10. A centrifugal pump parts positioning and processing device according to claim 8, characterized in that: The welding part includes an inner welding gun installed on the lower side of the rotating table through a second support, an L-shaped connecting plate is fixedly provided on one end of the linkage plate away from the rotating table and located close to the corresponding feeding rack, and an outer welding gun is installed on the vertical section of the L-shaped connecting plate.

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