CN118417790A - Vacuum pump impeller welding jig - Google Patents

Abstract

The application belongs to the technical field of vacuum pump impeller processing, and discloses a vacuum pump impeller welding fixture, which comprises: including operation panel, equidistance adjustment mechanism, rim plate fixture, blade centre gripping transposition mechanism, blade height adjustment mechanism, link gear, welding mechanism and pressure testing mechanism, equidistance adjustment mechanism sets up the top at the operation panel, and rim plate fixture sets up on equidistant adjustment mechanism, and blade centre gripping transposition mechanism sets up the top at the operation panel, and blade height adjustment mechanism sets up the top at the operation panel, and link gear sets up the top at the operation panel. The application can ensure the accurate and consistent relative positions of all parts of the impeller in the welding process through the equidistant adjusting mechanism, thereby ensuring the balance and symmetry of the impeller, being important to reducing vibration and noise generated during operation, improving the efficiency and stability of the vacuum pump, simplifying the production preparation flow, leading the adjustment work to be more rapid and simple, improving the overall production efficiency and reducing the cost.

Description

A vacuum pump impeller welding fixture

Technical Field

The present application relates to the technical field of vacuum pump impeller processing, and in particular to a vacuum pump impeller welding fixture.

Background technique

The vacuum pump impeller is the core component of the vacuum pump. Its main function is to help generate vacuum. By rotating, the mechanical energy of the motor is converted into the kinetic energy of the gas and then into pressure energy to drive the gas to flow and discharge, thereby improving efficiency. The efficiency of the vacuum pump can be controlled by adjusting the size and speed of the impeller to control the gas flow and pressure, and achieve stable operation under different working conditions. The durability and reliability of the impeller also determine the long-term operation of the vacuum pump in harsh environments, affecting maintenance requirements and costs. It is one of the key factors affecting the performance of the vacuum pump. The vacuum pump impeller welding fixture can ensure the accurate position of the impeller by using a specially designed fixture to fix the impeller, thereby ensuring the welding quality;

The existing vacuum pump impeller welding fixture cannot be adjusted equidistantly during use. On the one hand, the inability to adjust equidistantly will lead to inaccurate welding position of the impeller, affecting the balance and symmetry of the impeller. The imbalance of the impeller will produce excessive vibration and noise during operation, reducing the working efficiency and life of the vacuum pump. On the other hand, slight differences in blade position during welding may lead to uneven stress distribution at the weld, which may easily cause fatigue damage to the blades or welds under long-term operation, increasing the risk of equipment failure. If quick and accurate adjustments cannot be made, the time for production preparation and adjustment will be increased, thereby affecting production efficiency and increasing production costs.

Summary of the invention

One of the purposes of the present application is to provide a vacuum pump impeller welding fixture.

In order to achieve the above purpose, the technical solution adopted in the present application is: a vacuum pump impeller welding fixture, including an operating table, an equidistant adjustment mechanism, a wheel clamping mechanism, a blade clamping and transposition mechanism, a blade height adjustment mechanism, a linkage mechanism, a welding mechanism and a pressure testing mechanism, wherein the equidistant adjustment mechanism is arranged on the top of the operating table, the wheel clamping mechanism is arranged on the equidistant adjustment mechanism, the blade clamping and transposition mechanism is arranged above the operating table, the blade height adjustment mechanism is arranged above the operating table, the linkage mechanism is arranged above the operating table, the welding mechanism is arranged on the outside of the operating table, and the pressure testing mechanism is arranged on the outside of the operating table. The structure is arranged on one side of the top of the operating table, the equidistant adjustment mechanism is used to distribute the blades of the impeller at an equal distance in the fixture, the disc clamping mechanism is used to firmly clamp the disc part of the impeller, the blade clamping and shifting mechanism shifts the blades after clamping, so as to facilitate uniform contact and processing of the blades during welding, the blade height adjustment mechanism enables the height of the blades to be adjusted according to needs, the linkage mechanism coordinates the actions of different components in the fixture and operates synchronously during the entire welding process, the welding mechanism is responsible for the actual welding operation, and the pressure testing mechanism performs a pressure test on the impeller after welding.

Preferably, the equidistant adjustment mechanism includes a first L-shaped plate, a second L-shaped plate, a first motor, a rotating disk, a limit pin, a connecting rod, an adjustment disk and a transmission groove, the first L-shaped plate is fixedly connected to one side of the top of the operating table, the second L-shaped plate is fixedly connected to the outer side of the first L-shaped plate, the first motor is fixedly connected to the outer side of the second L-shaped plate, the output shaft of the first motor passes through the second L-shaped plate and the first L-shaped plate, the rotating disk is fixedly connected to the output shaft of the first motor, the limit pin is fixedly connected to one side of the rotating disk, the connecting rod is rotatably connected to one side of the first L-shaped plate, the adjustment disk is fixedly connected to the outside of the connecting rod, the transmission grooves are equidistantly opened on the outer side of the adjusting disk, and the limit pins are slidably connected to the corresponding transmission grooves.

Preferably, the wheel clamping mechanism includes a fixed plate, a support ring, a gear ring, three racks, three clamping plates, three transmission gears and a second motor, the fixed plate is fixedly connected to the end of the connecting rod away from the first L-shaped plate, the support ring is fixedly connected to one side of the fixed plate, the gear ring is rotatably connected to one side of the support ring, the three racks are stacked and slidably connected inside the support ring, the three clamping plates are fixedly connected to the corresponding ends of the corresponding racks, the three transmission gears are all arranged inside the support ring, the transmission gears are all meshed with the corresponding racks and gear rings, the second motor is fixedly connected to the outside of the fixed plate, and the output shaft of the second motor passes through the fixed plate and is fixedly connected to the outside of one of the transmission gears.

Preferably, the blade clamping and shifting mechanism includes a flower axis rod, a third L-shaped plate, two clamping cylinders and a second pulley, the flower axis rod is rotatably connected to the inside of the first L-shaped plate, the third L-shaped plate is fixedly connected to the bottom of the flower axis rod, the two clamping cylinders are respectively fixedly connected to the two ends of one side of the third L-shaped plate, the second pulley is rotatably connected to the top of the first L-shaped plate, and the flower axis rod is slidably connected to the second pulley.

Preferably, the blade height adjustment mechanism includes a telescopic cylinder and a first fixed plate, the telescopic cylinder is fixedly connected to the top of the first L-shaped plate, the first fixed plate is fixedly connected to the top of the flower shaft rod, and one end of the bottom of the first fixed plate is fixedly connected to the output end of the telescopic cylinder.

Preferably, the linkage mechanism includes a first bevel gear, two second fixed plates, a rotating rod, a second bevel gear, a first pulley and a transmission belt, the first bevel gear is fixedly connected to the output shaft of the first motor, the two second fixed plates are fixedly connected to the outer side of the first L-shaped plate, the rotating rod is rotatably connected between the two second fixed plates, the top and bottom of the rotating rod both pass through the corresponding second fixed plates, the second bevel gear is fixedly connected to the bottom of the rotating rod, the second bevel gear is meshed with the first bevel gear, the first pulley is fixedly connected to the top of the rotating rod, and the transmission belt is transmission-connected between the first pulley and the second pulley.

Preferably, the welding mechanism includes a third fixed plate, a robotic arm and a laser welding head, the third fixed plate is fixedly connected to the outside of the operating table, the robotic arm is arranged on the top of the third fixed plate, and the laser welding head is fixedly connected to the output end of the robotic arm.

Preferably, the pressure testing mechanism includes a support plate, two adjusting tubes, two bidirectional threaded rods, four sliding blocks, two adjusting knobs, four alignment blocks and two pressure gauges, the support plate is fixedly connected to one end of the top of the operating table, the two adjusting tubes are fixedly connected to one side of the support plate, the two bidirectional threaded rods are respectively rotatably connected to the inside of the corresponding adjusting tubes, the four sliding blocks are respectively threadedly connected to the outside of the corresponding bidirectional threaded rods, one end of the bidirectional threaded rods extends to the outside of the adjusting tube and is fixedly connected to the corresponding adjusting knob, the four alignment blocks are respectively fixedly connected to the side close to the corresponding two sliding blocks, the two pressure gauges are respectively fixedly connected to the outside of the corresponding sliding blocks, and the corresponding two alignment blocks and the pressure gauges are used in coordination with each other.

Preferably, the outer side of the rack is fixedly connected to a limit block, the limit blocks are slidably connected to the support ring, the inside of the adjusting tube and on both sides of the bidirectional threaded rod are fixedly connected to a limit rod, and the sliding blocks are slidably connected to the corresponding limit rods.

Preferably, a control panel is fixedly connected to the outer side of the operating table, the first motor, the second motor, the clamping cylinder, the telescopic cylinder, the robotic arm and the laser welding head are all electrically connected to the control panel, and four supporting legs are fixedly connected to the bottom of the operating table.

Compared with the prior art, the beneficial effects of this application are:

(1) The equidistant adjustment mechanism can ensure that the relative positions of the various parts of the impeller are accurate and consistent during the welding process, thereby ensuring the balance and symmetry of the impeller, which is crucial for reducing the vibration and noise generated during operation and improving the efficiency and stability of the vacuum pump. It can simplify the production preparation process, make the adjustment work faster and easier, improve the overall production efficiency and reduce costs.

(2) The impeller can be firmly fixed by the wheel clamping mechanism to ensure that the impeller remains stable during the welding process, prevent inaccurate welding due to impeller movement or swing, improve welding quality, ensure the smooth operation of the impeller, and reduce vibration and noise.

(3) The blade clamping and repositioning mechanism can ensure that each blade is in the best position during the welding process, achieving more uniform and precise welding quality and reducing the imbalance or structural weakness of the blades caused by position deviation, which is particularly important when dealing with impellers of various designs.

(4) The design of the vacuum pump impeller may vary depending on the model or functional requirements, and the height of the blades may also vary accordingly. With the height adjustment mechanism, it is possible to adapt to these blades of different heights, ensuring the versatility and applicability of the fixture and ensuring that the welding point is in the best position.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a first perspective stereogram of the present invention.

FIG. 2 is a stereoscopic diagram of the present invention from a second viewing angle.

FIG. 3 is a schematic diagram of the structure of the isometric adjustment mechanism of the present invention.

FIG. 4 is a schematic diagram of the structure of the wheel clamping mechanism of the present invention.

FIG. 5 is a schematic diagram of the structure of the blade clamping and transposing mechanism of the present invention.

FIG. 6 is a schematic diagram of the linkage mechanism structure of the present invention.

FIG. 7 is a schematic diagram of the welding mechanism structure of the present invention.

FIG. 8 is a schematic diagram of the structure of the pressure testing mechanism of the present invention.

FIG. 9 is a schematic cross-sectional view of the pressure testing mechanism of the present invention.

FIG. 10 is a schematic diagram of the exploded structure of the roulette clamping mechanism of the present invention.

In the figure: 1, operating table; 2, first L-shaped plate; 3, second L-shaped plate; 4, first motor; 5, rotating plate; 6, limit pin; 7, connecting rod; 8, adjusting plate; 9, transmission groove; 10, fixed plate; 11, supporting ring; 12, gear ring; 13, rack; 14, clamping plate; 15, transmission gear; 16, second motor; 17, flower shaft rod; 18, third L-shaped plate; 19, clamping cylinder; 20, telescopic cylinder; 21, first fixed plate; 22, first bevel gear Wheel; 23. Second fixed plate; 24. Rotating rod; 25. Second bevel gear; 26. First pulley; 27. Second pulley; 28. Transmission belt; 29. Third fixed plate; 30. Robot arm; 31. Laser welding head; 32. Support plate; 33. Adjustment tube; 34. Bidirectional threaded rod; 35. Sliding block; 36. Adjustment knob; 37. Alignment block; 38. Pressure gauge; 39. Limit block; 40. Limit rod; 41. Control panel; 42. Support leg.

Detailed ways

Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

One of the preferred embodiments of the present application, as shown in Figures 1 and 10 for vacuum pump impeller processing, is a vacuum pump impeller welding fixture, the equidistant adjustment mechanism includes a first L-shaped plate 2, a second L-shaped plate 3, a first motor 4, a rotating disk 5, a limit pin 6, a connecting rod 7, an adjustment disk 8 and a transmission groove 9, the first L-shaped plate 2 is fixedly connected to one side of the top of the operating table 1, the second L-shaped plate 3 is fixedly connected to the outer side of the first L-shaped plate 2, the first motor 4 is fixedly connected to the outer side of the second L-shaped plate 3, the output shaft of the first motor 4 passes through the second L-shaped plate 3 and the first L-shaped plate 2, the rotating disk 5 is fixedly connected to the output shaft of the first motor 4, the limit pin 6 is fixedly connected to the It is fixedly connected to one side of the rotating disk 5, the connecting rod 7 is rotatably connected to one side of the first L-shaped plate 2, the adjusting disk 8 is fixedly connected to the outside of the connecting rod 7, and the transmission grooves 9 are equidistantly arranged on the outside of the adjusting disk 8. The limit pins 6 are slidably connected to the corresponding transmission grooves 9. The above device can ensure the accurate consistency of the relative positions of various parts of the impeller during the welding process through the equidistant adjustment mechanism, thereby ensuring the balance and symmetry of the impeller, which is very important for reducing the vibration and noise generated during operation and improving the efficiency and stability of the vacuum pump. It can simplify the production preparation process, make the adjustment work faster and easier, improve the overall production efficiency and reduce costs.

As shown in FIG. 1 and FIG. 10 , a vacuum pump impeller welding fixture is provided. The impeller clamping mechanism includes a fixed plate 10, a support ring 11, a gear ring 12, three racks 13, three clamping plates 14, three transmission gears 15 and a second motor 16. The fixed plate 10 is fixedly connected to the end of the connecting rod 7 away from the first L-shaped plate 2. The support ring 11 is fixedly connected to one side of the fixed plate 10. The gear ring 12 is rotatably connected to one side of the support ring 11. The three racks 13 are stacked and slidably connected to the inside of the support ring 11. The three clamping plates 14 are fixedly connected to the corresponding racks 13. At one end, three transmission gears 15 are all arranged inside the support ring 11, and the transmission gears 15 are meshed with the corresponding racks 13 and the ring gears 12. The second motor 16 is fixedly connected to the outside of the fixed disk 10, and the output shaft of the second motor 16 passes through the fixed disk 10 and is fixedly connected to the outside of one of the transmission gears 15. The above device can firmly fix the impeller through the wheel clamping mechanism to ensure that the impeller remains stable during the welding process, prevent inaccurate welding due to movement or swing of the impeller, improve welding quality, ensure the smooth operation of the impeller, and reduce vibration and noise.

As shown in Figures 1 and 10, a vacuum pump impeller welding fixture is provided. The blade clamping and transposition mechanism includes a flower shaft rod 17, a third L-shaped plate 18, two clamping cylinders 19 and a second pulley 27. The flower shaft rod 17 is rotatably connected to the inside of the first L-shaped plate 2. The third L-shaped plate 18 is fixedly connected to the bottom of the flower shaft rod 17. The two clamping cylinders 19 are respectively fixedly connected to the two ends of one side of the third L-shaped plate 18. The second pulley 27 is rotatably connected to the top of the first L-shaped plate 2. The flower shaft rod 17 is slidably connected to the second pulley 27. The above device can ensure that each blade is in the best position during the welding process through the blade clamping and transposition mechanism, thereby achieving more uniform and precise welding quality and reducing the imbalance or structural weakness of the blades caused by position deviation. This is particularly important when processing impellers of various designs.

As shown in Figures 1 and 10, a vacuum pump impeller welding fixture is provided. The blade height adjustment mechanism includes a telescopic cylinder 20 and a first fixed plate 21. The telescopic cylinder 20 is fixedly connected to the top of the first L-shaped plate 2. The first fixed plate 21 is fixedly connected to the top of the flower shaft rod 17. One end of the bottom of the first fixed plate 21 is fixedly connected to the output end of the telescopic cylinder 20. The above device uses the blade height adjustment mechanism. The design of the vacuum pump impeller may vary depending on the model or functional requirements, and the height of the blades will also vary accordingly. With the height adjustment mechanism, these blades of different heights can be adapted to ensure the versatility and applicability of the fixture, and ensure that the welding point is located in the best position.

As shown in the vacuum pump impeller processing of Figures 1 and 10, a vacuum pump impeller welding fixture, a linkage mechanism includes a first bevel gear 22, two second fixed plates 23, a rotating rod 24, a second bevel gear 25, a first pulley 26 and a transmission belt 28, the first bevel gear 22 is fixedly connected to the output shaft of the first motor 4, the two second fixed plates 23 are fixedly connected to the outside of the first L-shaped plate 2, the rotating rod 24 is rotatably connected between the two second fixed plates 23, the top and the bottom of the rotating rod 24 both pass through the corresponding second fixed plates 23, the second bevel gear 25 is fixedly connected to the bottom of the rotating rod 24, the second bevel gear 25 is meshed with the first bevel gear 22, the first pulley 26 is fixedly connected to the top of the rotating rod 24, and the transmission belt 28 is transmission-connected between the first pulley 26 and the second pulley 27. The above device can ensure that all blades are adjusted simultaneously and in the same way during the welding process through the linkage mechanism, which helps to ensure the consistency of welding and the dynamic balance of the impeller, and reduces the error that may be introduced by adjusting each blade individually.

As shown in Figures 1 and 10, a vacuum pump impeller welding fixture is provided. The welding mechanism includes a third fixed plate 29, a mechanical arm 30 and a laser welding head 31. The third fixed plate 29 is fixedly connected to the outside of the operating table 1. The mechanical arm 30 is arranged on the top of the third fixed plate 29. The laser welding head 31 is fixedly connected to the output end of the mechanical arm 30. The laser welding of the above device provides extremely high welding accuracy and can accurately control the welding position, depth and size. The weld produced by this welding method is of high quality and tightly combined, which helps to improve the overall performance and durability of the impeller. The thermal damage of the impeller material is minimized, thereby retaining the inherent performance and structural integrity of the material.

As shown in FIG. 1 and FIG. 10 , a vacuum pump impeller welding fixture is provided. The pressure testing mechanism includes a support plate 32, two adjusting tubes 33, two bidirectional threaded rods 34, four sliding blocks 35, two adjusting knobs 36, four alignment blocks 37 and two pressure gauges 38. The support plate 32 is fixedly connected to one end of the top of the operating table 1, and the two adjusting tubes 33 are fixedly connected to one side of the support plate 32. The two bidirectional threaded rods 34 are respectively rotatably connected to the inside of the corresponding adjusting tubes 33. The four sliding blocks 35 are respectively threadedly connected to the outside of the corresponding bidirectional threaded rods 34. One end of the bidirectional threaded rods 34 extends to the adjusting tubes 33. The outside of the device is fixedly connected to the corresponding adjusting knob 36, four alignment blocks 37 are respectively fixedly connected to the side close to the corresponding two sliding blocks 35, and two pressure gauges 38 are respectively fixedly connected to the outside of the corresponding sliding blocks 35. The corresponding two alignment blocks 37 and the pressure gauges 38 are used in conjunction with each other. The above device can check the sealing and strength of the welding joint through pressure testing to ensure that the weld can withstand the predetermined pressure in actual use, which helps to prevent leakage or impeller damage caused by welding defects, and promptly discover and correct problems in the production process. This instant quality control can reduce the outflow of defective products and improve overall production efficiency.

Working principle: When the above vacuum pump impeller welding fixture is in use, the rotating disk 5 is adjusted to a suitable position through the control of the first motor 4 to ensure that the impeller blades can be distributed in the fixture at a medium distance. The wheel disc clamping mechanism firmly clamps the wheel disc part of the impeller through the cooperation of the support ring 11, the gear ring 12, the rack 13 and the clamping plate 14 to prevent it from shifting during the welding process. This process is powered by the second motor 16 and precisely controlled by the transmission gear 15. The blade height adjustment mechanism includes a telescopic cylinder 20 and a first fixed plate 21, which allows the height of each blade to be adjusted as needed to adapt to impellers of different designs. The blade clamping and transposition mechanism realizes precise clamping and transposition of the blades through the control of the flower shaft rod 17 and the clamping cylinder 19, which provides convenience for the welding operation. Through the first bevel gear 22, the rotating rod 24, and the second bevel gear 25 The coordinated work with the transmission belt 28 ensures that the different components in the fixture operate synchronously and improves the efficiency of the operation, including the actual welding operation performed by the robot arm 30 and the laser welding head 31. The welding position and speed are accurately controlled through the control panel 41 to ensure high-quality welding seams. After welding is completed, the impeller is pressure tested using a pressure testing mechanism including a support plate 32, an adjusting tube 33 and a pressure gauge 38 to check the sealing and structural strength of the welding seams to ensure that the impeller meets the use requirements. The first motor 4, the second motor 16, the clamping cylinder 19, the telescopic cylinder 20, the robot arm 30 and the laser welding head 31 are all electrically controlled through the control panel 41 of the operating table 1, realizing the automation and precision of the operation. The support legs 42 at the bottom of the operating table 1 ensure that the entire welding fixture is stable and reliable, providing a solid foundation for high-quality welding operations.

The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims (10)

1. A vacuum pump impeller welding jig, comprising: the device comprises an operation table (1), an equidistant adjusting mechanism, a wheel disc clamping mechanism, a blade clamping transposition mechanism, a blade height adjusting mechanism, a linkage mechanism, a welding mechanism and a pressure testing mechanism;

The device comprises an operation table (1), a wheel disc clamping mechanism, a blade clamping transposition mechanism, a blade height adjusting mechanism, a linkage mechanism, a welding mechanism and a pressure testing mechanism, wherein the equidistant adjusting mechanism is arranged at the top of the operation table (1), the wheel disc clamping mechanism is arranged on the equidistant adjusting mechanism, the blade clamping transposition mechanism is arranged above the operation table (1), the blade height adjusting mechanism is arranged above the operation table (1), the linkage mechanism is arranged above the operation table (1), the welding mechanism is arranged at the outer side of the operation table (1), and the pressure testing mechanism is arranged at one side of the top of the operation table (1);

Equidistant adjustment mechanism is used for the blade of impeller to distribute at anchor clamps equidistance, rim plate fixture is used for firmly centre gripping impeller's rim plate part, the transposition is carried out to the blade centre gripping transposition mechanism after carrying out the centre gripping to the blade, be convenient for carry out uniform contact and processing to the blade in the welding process, blade height adjustment mechanism makes the height of blade adjust according to the demand, different part actions in the link gear coordination anchor clamps, synchronous operation in whole welding process, welding mechanism is responsible for actual welding operation, pressure testing mechanism carries out pressure test to the impeller after the welding.

2. A vacuum pump impeller welding jig according to claim 1, wherein: the equidistant adjusting mechanism comprises a first L-shaped plate (2), a second L-shaped plate (3), a first motor (4), a rotating disc (5), a limiting pin (6), a connecting rod (7), an adjusting disc (8) and a transmission groove (9);

The utility model discloses a motor control device for a motor control device, including operation panel (1), first L shaped plate (2), connecting rod (7), locating pin (6), locating pin (7), locating pin (6) is fixed connection in one side of rotation panel (5), connecting rod (7) rotate one side of connecting first L shaped plate (2), adjusting disk (8) fixed connection is in the outside of connecting rod (7), outside at adjusting disk (8) is seted up to transmission groove (9) equidistance, locating pin (6) all with corresponding transmission groove (9) sliding connection.

3. A vacuum pump impeller welding jig according to claim 2, wherein: the wheel disc clamping mechanism comprises a fixed disc (10), a supporting ring (11), a gear ring (12), three racks (13), three clamping plates (14), three transmission gears (15) and a second motor (16);

The fixed disk (10) is fixedly connected with one end of the connecting rod (7) far away from the first L-shaped plate (2), the support ring (11) is fixedly connected with one side of the fixed disk (10), the gear ring (12) is rotationally connected with one side of the support ring (11), the three racks (13) are piled into the inside of the support ring (11) in a sliding mode, the three clamping plates (14) are fixedly connected with one corresponding end of the corresponding racks (13), the three transmission gears (15) are all arranged in the inside of the support ring (11), the transmission gears (15) are all meshed with the corresponding racks (13) and the gear ring (12), the second motor (16) is fixedly connected with the outer side of the fixed disk (10), and an output shaft of the second motor (16) penetrates through the fixed disk (10) and is fixedly connected with the outer side of one transmission gear (15).

4. A vacuum pump impeller welding jig according to claim 2, wherein: the blade clamping and transposition mechanism comprises a flower shaft lever (17), a third L-shaped plate (18), two clamping cylinders (19) and a second belt pulley (27);

The utility model discloses a flower-shaped shaft rod (17) is characterized in that the flower-shaped shaft rod (17) is rotationally connected in the first L-shaped plate (2), a third L-shaped plate (18) is fixedly connected at the bottom of the flower-shaped shaft rod (17), two clamping cylinders (19) are respectively fixedly connected at two ends on one side of the third L-shaped plate (18), a second belt pulley (27) is rotationally connected at the top of the first L-shaped plate (2), and the flower-shaped shaft rod (17) is in sliding connection with the second belt pulley (27).

5. A vacuum pump impeller welding jig according to claim 4, wherein: the blade height adjusting mechanism comprises a telescopic cylinder (20) and a first fixing plate (21);

The telescopic cylinder (20) is fixedly connected to the top of the first L-shaped plate (2), the first fixing plate (21) is fixedly connected to the top of the flower shaft rod (17), and one end of the bottom of the first fixing plate (21) is fixedly connected with the output end of the telescopic cylinder (20).

6. A vacuum pump impeller welding jig according to claim 4, wherein: the linkage mechanism comprises a first bevel gear (22), two second fixing plates (23), a rotating rod (24), a second bevel gear (25), a first belt pulley (26) and a transmission belt (28);

The first bevel gear (22) is fixedly connected to an output shaft of the first motor (4), the two second fixing plates (23) are fixedly connected to the outer side of the first L-shaped plate (2), the rotating rod (24) is rotatably connected between the two second fixing plates (23), the top and the bottom of the rotating rod (24) penetrate through the corresponding second fixing plates (23), the second bevel gear (25) is fixedly connected to the bottom of the rotating rod (24), the second bevel gear (25) is connected with the first bevel gear (22) in a meshed mode, the first belt pulley (26) is fixedly connected to the top of the rotating rod (24), and the driving belt (28) is connected between the first belt pulley (26) and the second belt pulley (27) in a driving mode.

7. A vacuum pump impeller welding jig according to claim 1, wherein: the welding mechanism comprises a third fixed plate (29), a mechanical arm (30) and a laser welding head (31);

the third fixing plate (29) is fixedly connected to the outer side of the operation table (1), the mechanical arm (30) is arranged at the top of the third fixing plate (29), and the laser welding head (31) is fixedly connected to the output end of the mechanical arm (30).

8. A vacuum pump impeller welding jig according to claim 3, wherein: the pressure testing mechanism comprises a supporting plate (32), two adjusting pipes (33), two bidirectional threaded rods (34), four sliding blocks (35), two adjusting knobs (36), four alignment blocks (37) and two pressure gauges (38);

The utility model discloses a control panel, including control panel (1) and control panel, backup pad (32) fixed connection is in the one end at control panel (1) top, two equal fixed connection of control tube (33) is in one side of backup pad (32), two bilateral threaded rod (34) rotate respectively and connect in the inside of corresponding control tube (33), four sliding block (35) threaded connection respectively in the outside of corresponding bilateral threaded rod (34), the one end of bilateral threaded rod (34) all extends to the outside of control tube (33) and with corresponding adjust knob (36) fixed connection, four alignment block (37) are fixed connection respectively in the one side that corresponds two sliding blocks (35) mutually close, two manometer (38) are fixed connection respectively in the outside of corresponding sliding block (35), correspond cooperation use between two alignment blocks (37) and manometer (38).

9. A vacuum pump impeller welding jig according to claim 8, wherein: the outside of rack (13) is all fixedly connected with stopper (39), stopper (39) all with holding ring (11) sliding connection, the inside of adjusting tube (33) just is located both sides of two-way threaded rod (34) and all fixedly connected with gag lever post (40), slider (35) all with corresponding gag lever post (40) sliding connection.

10. A vacuum pump impeller welding jig according to claim 2, wherein: the outside fixedly connected with control panel (41) of operation panel (1), first motor (4), second motor (16), centre gripping cylinder (19), flexible cylinder (20), arm (30) and laser welding head (31) all with control panel (41) electric connection, the bottom fixedly connected with four supporting legs (42) of operation panel (1).