A centrifugal pump accessories positioning processing device

Abstract

The present invention relates to the technical field of positioning and processing of centrifugal pump accessories, and specifically to a positioning and processing device for centrifugal pump accessories, comprising: a lifting mechanism and a rotating mechanism are arranged on the upper and lower sides of the front side of a lifting control console, a positioning mechanism is arranged on the lifting mechanism, and a welding mechanism is arranged on the positioning mechanism; the present invention cooperates with the positioning mechanism and the welding mechanism, not only can the blades be quickly dropped and accurately guided and positioned, but also the blades that have been positioned and cut can be quickly connected and tightened and the inner and outer ends are synchronously welded; the present invention cooperates with the rotating mechanism and the lifting mechanism, not only can the flat cover plate with completed blade welding and the flat cover plate with unwelded blades be quickly displaced and adjusted, but also the flat cover plate with unwelded blades can be simultaneously subjected to blade positioning welding processing, and the arc cover plate on the flat cover plate with completed blade welding can be pressed and positioned to cooperate with external welding equipment for welding processing.

Description

Technical Field

[0001] The invention relates to the technical field of positioning and processing of centrifugal pump accessories, in particular 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 liquid. The impeller is the core component of the centrifugal pump. The impeller is usually assembled and welded by a curved cover plate, a flat cover plate riveted with a hub, and multiple blades. In the existing technology, in the process of assembling and welding the impeller, it is usually necessary to first place a single blade at the corresponding position on the upper side of the flat cover plate through a material-taking robot arm, and then use a welding robot arm to spot-weld the inner and outer ends of the blade that are in contact with the upper side of the flat cover plate, and then repeat the above operation until all blades are welded and fixed to the upper side of the flat cover plate, and then the curved cover plate is placed in position and pressed against the curved ends of all blades, and finally the curved ends of each blade are welded and fixed at the position where they contact the lower side of the curved cover plate through a welding robot arm.

[0003] However, the traditional method of positioning and welding impeller blades has the following problems: 1. In the prior art, when welding multiple blades on a single impeller, the material-retrieving robot arm generally needs to perform repeated material-retrieving and positioning operations. The above-mentioned positioning method not only has relatively cumbersome overall operation steps, but also has high overall work intensity, large losses, and high maintenance costs for the material-retrieving robot arm. In addition, the positioning and placement speed of the blade as a whole is slow and the efficiency is low, resulting in low welding efficiency of the impeller as a whole; 2. In the prior art, the material-retrieving robot arm needs to always maintain the clamping and positioning of the blade during the welding process of the positioned blade by the welding robot arm, and cannot simultaneously retrieve and position the next blade. The welding robot arm cannot simultaneously perform welding on other blades during the process of retrieving and positioning the blade by the clamping robot arm. The above-mentioned operation method not only leads to poor continuity of welding between blades and low efficiency of assembly welding of the impeller as a whole, but also leads to poor and low efficiency of overall coordination of the processing equipment, resulting in low processing efficiency of the impeller and centrifugal pump as a whole. Summary of the Invention

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a centrifugal pump accessory positioning and processing device for assembling and welding an impeller, wherein the impeller includes a flat cover plate, a hub, blades and an arc-shaped cover plate, and the positioning and processing device includes a lifting console, and a lifting mechanism and a rotating mechanism are provided on the upper and lower sides of the front side of the lifting console, a positioning mechanism for positioning the blades is provided on the lifting mechanism, and a welding mechanism is provided on the positioning mechanism.

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

[0006] The lifting mechanism includes a lifting guide rail installed on the front side of the lifting console, an electric lifting platform that moves up and down is slidably provided on the lifting guide rail, and a pressing portion for pressing the arc cover is provided at the front end of the lower side of the electric lifting platform.

[0007] The positioning mechanism includes a plurality of connecting rods evenly fixed on the lower side of the electric lifting platform, and a fixing frame is fixed to the lower ends of all the connecting rods. A rotating drive unit is provided on the fixing frame, and a positioning unit for positioning the blades is provided on the rotating drive unit. The positioning unit is provided with a docking unit for docking with the hub.

[0008] The welding mechanism includes a blanking part that is centrally symmetrically arranged on the rotating drive part for blanking the blades, a fastening part that presses the positioned blades, and a welding part that welds the inner and outer ends of the positioned blades.

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

[0010] Preferably, the inner support part includes a fixed table fixedly arranged at the center of the corresponding rotating disk, a pneumatic cylinder is fixedly arranged on the lower side of the fixed 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 on the upper side of the fixed 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 includes a plurality of connecting columns evenly fixedly arranged on the lower side of the electric lifting platform, an annular swivel seat is commonly 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 rotary 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 provided with a rotating shaft rotatably connected to the fixed frame, a rotating table is fixedly provided on the lower side of the rotating shaft, and a linkage plate is fixedly provided symmetrically on the side surface of the rotating table.

[0013] Preferably, the positioning portion includes a positioning platform rotatably arranged on a rotating table, a plurality of material guide racks are circumferentially evenly fixed on the positioning platform, an arc-shaped material guide groove running through the material guide rack is provided in the material guide rack, and a guide groove located outside the material guide rack is provided on the upper surface of the positioning platform, the guide groove includes a plurality of circumferentially evenly distributed oblique arc grooves 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.

[0014] Preferably, the docking portion includes a plurality of L-shaped connecting frames that are uniformly fixed circumferentially on the lower side of the positioning platform and located on the inner side of the corresponding material guide frame. A docking cover that is aligned with the wheel hub is fixedly provided on the horizontal sections of all the L-shaped connecting frames. The docking cover is uniformly provided with a plurality of rivet docking holes that pass through it vertically and correspond one-to-one with the rivets on the wheel hub.

[0015] Preferably, the unloading part includes a feeding rack fixedly arranged on the side surface of the corresponding linkage plate, a feeding trough which passes through the feeding rack from top to bottom is provided in the feeding rack, a plurality of blades are provided in the feeding trough for uniform sliding movement up and down, 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 provided on the side of the feeding rack away from the corresponding linkage plate through a support, a supporting block which slides into contact with the corresponding notch is fixedly provided on one end of the spring rod close to the corresponding feeding rack, a ball is rollingly provided on the side of the supporting block away from the corresponding spring rod, and a driven shaft which slides into contact with the guide groove is fixedly provided on the end of the spring rod away from the corresponding supporting block through a connecting block.

[0016] Preferably, the fastening part includes an annular groove commonly opened on the upper surface of the positioning platform and the middle part of all the material guide racks, a sleeve is fixedly provided on the upper side of the linkage plate, and a tightening column is elastically slidingly provided in the sleeve, which slides up and down through the corresponding linkage plate and slides with the annular groove, and a ball 2 is rolled on the lower end of the tightening column.

[0017] Preferably, the welding part includes an internal 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 connecting plate away from the rotating table and located on the side close to the corresponding feeding rack, and an external welding gun is installed on the vertical section of the L-shaped connecting plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention cooperates with the positioning mechanism and the welding mechanism, which can not only quickly place and cut the blades and accurately guide and position them, but also quickly connect the blades that have been cut and positioned to be tightened and the inner and outer ends are synchronously welded, thereby not only ensuring the accuracy and stability of the blade positioning welding process, but also greatly simplifying the overall operating steps of the blade positioning welding process, reducing the overall maintenance cost of the equipment, improving the continuity of the overall blade welding process and the efficiency of the overall impeller assembly welding process, thereby improving the overall processing efficiency of the impeller and the centrifugal pump.

[0020] 2. The present invention cooperates with the lifting mechanism to not only quickly adjust the position of the flat cover plate with completed blade welding and the flat cover plate with unwelded blades, but also simultaneously perform blade positioning welding processing on the flat cover plate with unwelded blades, and press and position the curved cover plate on the flat cover plate with completed blade welding to cooperate with external welding equipment for welding processing. As a result, not only the welding processing of the curved cover plate and blades on the same impeller can be quickly connected, but also the welding processing of the curved cover plates and blades on different impellers can be carried out simultaneously, thereby further improving the efficiency of the overall assembly and welding processing of the impeller. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0023] Figure 3 It is a partial cross-sectional diagram of the rotary mechanism structure.

[0024] Figure 4 It is a partial cross-sectional diagram of the inner support structure.

[0025] Figure 5 It is a partial cross-sectional diagram of the positioning mechanism structure.

[0026] Figure 6 It is a partial cross-sectional schematic diagram of the structure of the rotary drive unit.

[0027] Figure 7 for Figure 6 Enlarged schematic diagram of point A in the middle.

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

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

[0030] Figure 10 It is a partial cross-sectional diagram of the welding mechanism structure.

[0031] Figure 11 for Figure 10 Enlarged schematic diagram of point B in the middle.

[0032] Figure 12 It is a partial cross-sectional diagram of the welding part structure.

[0033] In the figure: 1. impeller; 11. flat cover plate; 12. hub; 13. blades; 14. arc-shaped cover plate; 2. lifting control console; 3. slewing mechanism; 31. slewing control console; 32. rotation adjustment unit; 321. electric slewing table; 322. supporting table; 323. rotating disk; 324. gear ring; 325. motor 1; 326. gear; 33. inner support unit; 331. fixed circular table; 332. pneumatic cylinder; 333. driving column; 334. sliding shaft; 335. inner support plate; 4. lifting mechanism; 41. lifting guide rail; 42. electric lifting table; 43. tightening unit; 431. connecting column; 432. annular swivel seat; 433. tightening swivel ring; 5. positioning mechanism; 51 , connecting rod; 52, fixed frame; 53, rotary drive unit; 531, motor 2; 532, rotating shaft; 533, rotating table; 534, connecting plate; 54, positioning unit; 541, positioning table; 542, guide rack; 543, arc-shaped guide trough; 544, guide groove; 55, docking unit; 551, L-shaped connecting frame; 552, docking cover; 553, rivet docking hole; 6, welding mechanism; 61, unloading unit; 611, feeding rack; 612, supporting block; 613, driven shaft; 62, fastening unit; 621, annular slide groove; 622, sleeve; 623, tightening column; 63, welding unit; 631, inner welding gun; 632, L-shaped connecting plate; 633, outer welding gun. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] See also Figure 1 and Figure 3A centrifugal pump accessory positioning and processing device is used to assemble and weld 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 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 console 2. The lifting mechanism 4 is provided with a positioning mechanism 5 for positioning and placing the blade 13, and the positioning mechanism 5 is provided with a welding mechanism 6.

[0036] See also Figure 1 and Figure 3 The slewing mechanism 3 includes a slewing console 31 installed on the front side of the lifting console 2. The slewing 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 provided on the electric turntable 321, a rotating disk 323 is symmetrically mounted on the supporting platform 322 for rotation front and back, a gear ring 324 is fixedly provided on the lower side of the rotating disk 323, a motor 1 325 is symmetrically fixedly provided on the lower side of the supporting platform 322, and a gear 326 meshing with the corresponding gear ring 324 is fixedly provided on the driving end of the motor 1 325.

[0038] See also Figure 3 and Figure 4 The inner support part 33 includes a fixed 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 table 331, and 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 table 331 in the circumference, and 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 and the driving column 333 are connected by a transmission rod hinged up and down.

[0039] The flat cover plate 11 riveted with the wheel hub 12 is aligned and inserted on 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] The electric turntable 321 is driven to rotate 180 degrees by the rotary control console 31, and the electric turntable 321 then drives the supporting platform 322 and the rotating disk 323 installed thereon to rotate synchronously, and the rotating disk 323 then drives the flat cover plate 11 fixed on the upper side to rotate synchronously 180 degrees, so that the front flat cover plate 11 can be rotated and adjusted to the rear side, and the rear flat cover plate 11 can be rotated and adjusted to the front side; the gear 326 is driven to rotate by the motor 1 325, and the gear 326 then engages with the corresponding gear ring 324 for transmission, and the gear ring 324 then drives the corresponding rotating disk 323 and the flat cover plate 11 fixed on the upper side to rotate and adjust synchronously.

[0041] See also Figure 1 and Figure 2 The lifting mechanism 4 includes a lifting guide rail 41 installed on the front side of the lifting console 2, and an electric lifting platform 42 that moves up and down is slidably provided on the lifting guide rail 41. The front end of the lower side of the electric lifting platform 42 is provided with a pressing portion 43 for pressing the arc cover 14.

[0042] See also Figure 1 and Figure 2 The tightening portion 43 includes a plurality of connecting columns 431 evenly fixedly arranged on the lower side of the electric lifting platform 42. The lower ends of all the connecting columns 431 are fixedly provided with an annular rotating seat 432, and the lower side of the annular rotating seat 432 is rotatably provided with a tightening swivel 433.

[0043] See also Figure 1 、 Figure 5 and Figure 6 The positioning mechanism 5 includes a plurality of connecting rods 51 evenly fixed on the lower side of the electric lifting platform 42 and located behind the pressing part 43. The lower ends of all the connecting rods 51 are fixed with a fixing frame 52. The fixing frame 52 is provided with a rotating driving part 53. The rotating driving part 53 is provided with a positioning part 54 for positioning and placing the blade 13. The positioning part 54 is provided with a docking part 55 for docking and positioning with the hub 12.

[0044] See also Figure 5 and Figure 6 The rotating drive unit 53 includes a second motor 531 fixedly arranged on the upper side of the fixed frame 52, a driving end of the second motor 531 is fixedly provided with a rotating shaft 532 rotatably connected to the fixed frame 52, a rotating table 533 is fixedly provided on the lower side of the rotating shaft 532, and a linkage plate 534 is fixedly provided on the side surface of the rotating table 533 in a centrally symmetrical manner.

[0045] See also Figure 5 、 Figure 6 and Figure 8The positioning portion 54 includes a positioning platform 541 rotatably arranged on a rotating platform 533, and a plurality of guide racks 542 are fixedly arranged evenly circumferentially on the positioning platform 541. An arc-shaped guide groove 543 running through the guide rack 542 is provided in the guide rack 542. A guide groove 544 is provided on the upper surface of the positioning platform 541 and is located outside the guide rack 542. The guide groove 544 includes a plurality of oblique arc grooves evenly distributed circumferentially 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.

[0046] See also Figure 3 、 Figure 6 and Figure 9 The docking portion 55 comprises a plurality of L-shaped connecting brackets 551 uniformly fixed around the circumference below the positioning platform 541 and located inside the corresponding material guide brackets 542. A docking cover 552 is fixedly mounted on the horizontal sections of all L-shaped connecting brackets 551 and is aligned with and plugged into the wheel hub 12. The docking cover 552 is uniformly formed around the circumference with a plurality of vertically extending rivet docking holes 553 that correspond one-to-one with the rivets on the wheel hub 12. To facilitate docking, the upper ends of the rivet docking holes 553 may be chamfered.

[0047] First, the flat cover 11 with the hub 12 riveted thereon is fixedly installed on the upper side of the rotating disk 323 on the front side through the inner support plate 335. Then, the electric turntable 321 is rotated and adjusted to the rear side to be positioned with the positioning platform 541 and the docking cover 552 above. Then, the lifting console 2 controls the electric lifting platform 42 to move downward along the lifting guide rail 41. The electric lifting platform 42 then drives the fixing frame 52 and the rotating platform 533 to move downward synchronously through the connecting rod 51. The rotating platform 533 then drives the positioning platform 541 and its The L-shaped connecting frame 551 on the lower side moves downward synchronously, and the L-shaped connecting frame 551 drives the docking cover 552 to move downward synchronously until the docking cover 552 is aligned and inserted into the outer side of the wheel hub 12. At the same time, the motor 325 drives the rotating disk 323 to drive the flat cover 11 and the wheel hub 12 to rotate and adjust, so that the rivet docking holes 553 on the docking cover 552 can be stably aligned and inserted with the rivets on the wheel hub 12, thereby stably positioning the positioning platform 541 and the flat cover 11 together so that the two cannot rotate relative to each other.

[0048] See also Figure 1 and Figure 5 The welding mechanism 6 includes a blanking portion 61 centrally and symmetrically arranged on the rotating drive portion 53 for blanking the blades 13, a fastening portion 62 for pressing down and fastening the positioned blades 13, and a welding portion 63 for welding the inner and outer ends of the positioned blades 13.

[0049] See also Figure 5 、 Figure 10 and Figure 11The unloading part 61 includes a feeding rack 611 fixedly arranged on the side surface of the corresponding linkage plate 534, and a feeding trough that passes through the upper and lower parts is provided in the feeding rack 611. A plurality of blades 13 are evenly slidably arranged in the feeding trough, and a notch is provided at the lower end of the feeding rack 611 and on the side away from the corresponding linkage plate 534. A spring rod is elastically slidably provided on the side of the feeding rack 611 away from the corresponding linkage plate 534 through a support, and a supporting block 612 that slides into contact with the corresponding notch is fixedly provided on one end of the spring rod close to the corresponding feeding rack 611, and a ball bearing is rolled on the side of the supporting block 612 away from the corresponding spring rod, and a driven shaft 613 that slides with the guide groove 544 is fixedly provided on the end of the spring rod away from the corresponding supporting block 612 through a connecting block.

[0050] When the blade 13 is positioned on the upper side of the flat cover 11 fixed on the rear rotating disk 323, the motor 2 531 drives the rotating shaft 532 and the rotating platform 533 to rotate in a directional manner (such as Figure 10 The blade 13 is then aligned with the corresponding arc-shaped guide groove 543, and the blade 13 falls downwards under the action of its own weight, and at the same time, the driven shaft 613 moves to the corresponding oblique straight groove and is in the corresponding spring groove. Under the action of the spring rod, it moves toward the supporting block 612, and the supporting block 612 also moves toward the corresponding gap and contacts the shorter vertical side of the blade 13 that falls into the corresponding guide rack 542 until the vertical short side of the blade 13 is completely separated from the supporting block 612. The supporting block 612 then moves completely into the corresponding gap again and stably supports the blade 13 that falls immediately on the upper side of the blade 13. The blade 13 that falls into the guide rack 542 is stably positioned and placed at the corresponding position on the upper side of the flat cover 11 under the action of its own weight. The above operation is repeated until all the blades 13 in the feeding rack 611 are put into each guide rack 542 and positioned and placed at the corresponding position on the upper side of the flat cover 11, wherein the ball 1 on the supporting block 612 can reduce the friction between the vertical short side of the blade 13 that falls into the guide rack 542.

[0051] See also Figure 6 、 Figure 7 、 Figure 8 and Figure 10The fastening part 62 includes a positioning platform 541 and an annular slide groove 621 commonly opened on the upper surface of the middle part of all the guide racks 542. A sleeve 622 is fixedly provided on the upper side of the linkage plate 534. A tightening column 623 is elastically slidingly provided in the sleeve 622, which slides up and down through the corresponding linkage plate 534 and slides with the annular slide groove 621. A ball 2 is rolled on the lower end of the tightening column 623.

[0052] When the rotating table 533 drives the feeding rack 611 to rotate toward the guide rack 542 at the next adjacent position through the linkage plate 534, the sleeve 622 drives the clamping column 623 to rotate synchronously along the annular slide groove 621. When the feeding rack 611 is aligned with the guide rack 542 at the next adjacent position and puts the blade 13 into its corresponding arc-shaped guide groove 543, the clamping column 623 slides synchronously along the annular slide groove 621 to the upper side of the previous 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 clamping 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 fitted with the upper surface of the flat cover plate 11.

[0053] See also Figure 5 、 Figure 6 and Figure 12 The welding part 63 includes an inner welding gun 631 mounted on the lower side of the rotating table 533 through a second support. An L-shaped connecting plate 632 is fixedly provided on the connecting plate 534 at one end away from the rotating table 533 and located 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 platform 533 drives the tightening column 623 through the linkage plate 534 to follow the feeding rack 611 to press down and tighten the blade 13 that has been positioned on the upper side of the flat cover plate 11, the rotating platform 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. The vertical section of the L-shaped connecting frame 551 is outside the overall rotation trajectory of the inner welding gun 631, so it will not cause obstruction or interference to the rotation welding operation of the inner welding gun 631. At the same time, the rotating platform 533 also drives the inner welding gun 631 through the linkage plate 534 drives the L-shaped connecting plate 632 and its corresponding external welding gun 633 to rotate synchronously and aligns the welding end of the external 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 by the internal welding gun 631 and the external welding gun 633, so that the blades 13 that have been positioned and placed can be fastened and welded immediately after the feeding rack 611 is fed. The above-mentioned feeding and fastening welding operations are repeated until all the blades 13 positioned and placed at corresponding positions on the flat cover plate 11 are welded and fixed.

[0055] The above-mentioned operation method can not only realize the rapid feeding and precise guiding and positioning of the blades 13, but also can quickly connect the blades 13 that have been cut and positioned to be tightened and the inner and outer ends to be synchronously welded, thereby not only ensuring the accuracy and stability of the positioning welding processing of the blades 13, but also greatly simplifying the overall operation steps of the positioning welding processing of the blades 13, thereby improving the continuity of the overall welding processing of the blades 13 and the efficiency of the overall assembly welding processing of the impeller 1.

[0056] Before completing the welding process of the blades 13 of the flat cover plate 11 on the side rotating disk 323, a new flat cover plate 11 with a hub 12 riveted thereon is first fixedly installed on the front rotating disk 323. After the welding process of the blades 13 of the rear flat cover plate 11 is completed, the electric lifting platform 42 is first moved upward and reset, and then the electric turntable 321 is used to rotate and adjust it to the front side, and then the arc cover plate 14 is stably positioned and placed on the arc surface ends of all blades 13 through an external conveying device, and the flat cover plate 11 on the front side where the blades 13 are not welded is then rotated and adjusted to the rear side, and then the electric lifting platform 42 drives the positioning mechanism 5 and the welding mechanism 6 to move downward to weld the flat cover plate 11 on the rear side where the blades 13 are not welded, and at the same time, the connecting column 4 is connected. 31 also synchronously drives the tightening swivel 433 on the annular rotating seat 432 to move downward and press against the upper side of the arc cover plate 14, so that the arc cover plate 14 is stably fitted with the arc surface end of each blade 13, and then the rotating disk 323 drives the front flat cover plate 11 and the arc cover plate 14 to rotate and adjust at a fixed angle synchronously, and the tightening swivel 433 also rotates synchronously and is always pressed against the upper side of the arc cover plate 14. At the same time, the external welding equipment cooperates with the rotating disk 323 to stably weld each blade 13 to the arc cover plate 14 in turn, thereby completing the overall welding assembly of the impeller 1. Finally, the impeller 1 is transported and unloaded by the external conveying equipment, and the new flat cover plate 11 riveted with the hub 12 is fixedly installed on the rotating disk 323 on the front side.

[0057] The above-mentioned operation method can not only realize the rapid displacement adjustment of the flat cover plate 11 to which the blades 13 have been welded and the flat cover plate 11 to which the blades 13 have not been welded, but also simultaneously perform the blade 13 positioning welding processing on the flat cover plate 11 to which the blades 13 have not been welded, and press and position the arc-shaped cover plate 14 on the flat cover plate 11 to which the blades 13 have been welded, so as to cooperate with the external welding equipment for welding processing, thereby not only enabling the welding processing of the arc-shaped cover plate 14 and the blades 13 on the same impeller 1 to be quickly connected, but also enabling the welding processing of the arc-shaped cover plates 14 and the blades 13 on different impellers 1 to be carried out simultaneously, thereby further improving the efficiency of the overall assembly welding processing of the impeller 1.

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

Claims

1. A centrifugal pump parts positioning and processing device for assembling and welding an impeller, wherein the impeller comprises a flat cover plate, a hub, blades, and an arc-shaped cover plate. The positioning and processing device comprises 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 includes a slewing console installed on 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 includes a lifting guide rail installed on the front side of the lifting console, an electric lifting platform that moves up and down is slidably provided on the lifting guide rail, and a pressing portion for pressing the arc-shaped cover plate is provided at the front end of the lower side of the electric lifting platform; The positioning mechanism includes a plurality of connecting rods uniformly fixed on the lower side of the electric lifting platform, the lower ends of all the connecting rods are commonly fixed with a fixing frame, the fixing frame is provided with a rotating drive unit, the rotating drive unit is provided with a positioning unit for positioning the blade, and the positioning unit is provided with a docking portion for docking with the hub; The welding mechanism includes a blanking part symmetrically arranged on the rotating drive part for blanking the blades, a fastening part for pressing the positioned blades, and a welding part for welding the inner and outer ends of the positioned blades; The rotary drive unit includes a second motor fixedly mounted on the upper side of the fixed frame, a rotating shaft rotatably connected to the fixed frame fixedly mounted on the driving end of the second motor, a rotating platform fixedly mounted on the lower side of the rotating shaft, and a linkage plate fixedly mounted on the side surface of the rotating platform in a centrally symmetrical manner; The positioning portion includes a positioning platform rotatably arranged on a rotating platform, a plurality of guide racks are fixedly arranged evenly in the circumferential direction on the positioning platform, an arc-shaped guide trough is provided in the guide rack and passes through the guide rack from top to bottom, and a guide groove is provided on the upper surface of the positioning platform and is located outside the guide rack, 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 grooves are shorter and the oblique arc grooves are longer; The docking portion includes a plurality of L-shaped connecting frames uniformly fixedly arranged on the lower side of the positioning platform and located on the inner side of the corresponding material guide frame. A docking cover that is aligned with the wheel hub is fixedly arranged on the horizontal sections of all the L-shaped connecting frames. The docking cover is uniformly provided with a plurality of rivet docking holes that pass through it vertically and correspond one-to-one with the rivets on the wheel hub. The unloading part includes a feeding rack fixedly arranged on the side surface of the corresponding linkage plate, a feeding trough running through the feeding rack is provided in the feeding rack, a plurality of blades are evenly slidably provided 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 provided on the side of the feeding rack away from the corresponding linkage plate through a support, a supporting block is fixedly provided on one end of the spring rod close to the corresponding feeding rack and slidably docked with the corresponding notch, a ball is rolled on the side of the supporting block away from the corresponding spring rod, and a driven shaft slidingly matched with the guide groove is fixedly provided on the end of the spring rod away from the corresponding supporting block through a connecting block; The fastening part includes a positioning table and an annular slide groove commonly opened on the upper surface of the middle part of all the material guide racks. A sleeve is fixedly provided on the upper side of the linkage plate. A tightening column is elastically slidingly provided in the sleeve, which slides up and down 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.

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 rotation control console, a supporting platform is fixedly arranged on the electric turntable, a rotating disk is symmetrically mounted on the supporting platform for front and back rotation, 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, and a gear meshing with 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 circular table fixedly arranged at the center of the corresponding rotating disk, a pneumatic cylinder is fixedly arranged on the lower side of the fixed circular 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 on the upper side of the fixed circular 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.

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

5. The centrifugal pump parts positioning and processing device according to claim 1, characterized in that: The welding part includes an inner welding gun mounted 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 mounted on the vertical section of the L-shaped connecting plate.

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