Flow assembly line for roots pump

Abstract

The utility model relates to a flow assembly line for roots pumps, which is particularly suitable for batch production of roots pumps. The conveying line is characterized by comprising a conveying line body, the on-line station, the first assembly station, the turnover press-fitting station, the second assembly station, the first turnover assembly station, the second turnover assembly station, the first horizontal rotation assembly station, the second horizontal rotation assembly station, the horizontal rotation detection station, the third turnover assembly station and the third assembly station are sequentially arranged end to end along the conveying line body and define a rectangle. The conveying line body is provided with a plurality of accompanying tool plates, and the overturning press-fitting station, the first horizontal rotating assembly station, the second horizontal rotating assembly station and the horizontal rotating detection station are each provided with a jacking rotating mechanism. The overturning press-fitting station, the first overturning assembly station, the second overturning assembly station, the third overturning assembly station and the overturning offline station are each provided with an overturning mechanism. The assembling device is high in assembling efficiency and beneficial to improving the assembling precision.

Description

Technical Field

[0001] This utility model relates to the field of Roots pump assembly technology, specifically to a flow assembly line for Roots pumps, which is particularly suitable for the mass production of Roots pumps. Background Technology

[0002] Roots pumps, as high-precision vacuum equipment, are widely used in semiconductor, photovoltaic, and chemical industries. Their assembly process involves the mating of multiple precision parts, including rotors, gears, bearings, and seals. Traditional assembly methods rely heavily on manual operation; key parameters such as gear meshing clearance and bearing press-fit depth require adjustments based on worker experience, leading to poor consistency. The pump body needs to be rotated multiple times (e.g., 180°, 90°) to assemble different sides, and traditional hoisting methods are prone to positioning errors. During the hoisting of heavy components (such as rotors), there is a risk of falling, and the press-fitting station lacks force control protection. Furthermore, the dispersed nature of the rotation, press-fitting, and inspection processes, along with frequent logistics transfers, results in lengthy assembly times. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned shortcomings in the existing technology and to provide a flow assembly line for Roots pumps with reasonable structural design, high assembly efficiency, and improved assembly accuracy.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: The structural features of the assembly line for Roots pumps are: including an upper assembly station, assembly station one, a flip-press assembly station, assembly station two, flip-assembly station one, flip-assembly station two, horizontal rotation assembly station one, horizontal rotation assembly station two, horizontal rotation inspection station, flip-assembly station three, assembly station three, marking assembly station, flip-off assembly station, and conveyor line. The upper assembly station, assembly station one, flip-press assembly station, assembly station two, flip-assembly station one, flip-assembly station two, horizontal rotation assembly station one, horizontal rotation assembly station two, horizontal rotation inspection station, and flip-assembly station three... Assembly station 1, the marking assembly station, and the flipping off-line station are arranged sequentially along the conveyor line, forming a rectangle. The conveyor line is equipped with several accompanying tooling plates. The loading station is equipped with a crane. Assembly stations 1 and 3 are both equipped with cantilever cranes. The flipping pressing station, horizontal rotating assembly station 1, horizontal rotating assembly station 2, and horizontal rotating inspection station are all equipped with lifting and rotating mechanisms. The flipping pressing station, flipping assembly station 1, flipping assembly station 2, flipping assembly station 3, and flipping off-line station are all equipped with flipping mechanisms. The flipping pressing station is also equipped with a pressing machine. The flipping marking assembly station is equipped with a nameplate marking machine.

[0005] Preferably, the online workstation, assembly workstation one, flip-pressing workstation, assembly workstation two, flip-assembly workstation one, flip-assembly workstation two, horizontal rotation assembly workstation one, horizontal rotation assembly workstation two, horizontal rotation inspection workstation, flip-assembly workstation three, assembly workstation three, engraving assembly workstation and flip-off workstation of this utility model are all equipped with tool plates.

[0006] Preferably, the flipping mechanism of this utility model includes a gantry frame, a lifting device, a clamping device, and a rotating device. The gantry frame includes a column and a top beam, the top beam being fixed to the top of the column, and the bottom of the column being fixed to the ground with bolts. The lifting device includes a limiting plate, a slider, a top plate, a bottom plate, a slider connecting block, a first servo motor, and a lifting guide rail. The top plate is fixed to the top beam with bolts, the lifting guide rail passes through the top plate, and the limiting plate and the bottom plate are respectively fixed to the top and bottom of the lifting guide rail. The slider connecting block and the first servo motor are both mounted on the top plate, the slider is mounted on the slider connecting block, and the slider cooperates with the lifting guide rail. The first servo motor is connected to the slider via a coupling. The clamping device includes a clamping arm, a gear and rack mechanism, a second servo motor, and a mounting frame. The top is fixed to the bottom of the base plate. The gear and rack mechanism is a bidirectional screw clamping mechanism. Both the gear and rack mechanism and the second servo motor are mounted on the mounting frame. The second servo motor is connected to the gear and rack mechanism. The upper end of the clamping arm is movably mounted on the mounting frame and connected to the gear and rack mechanism. The clamping arm is driven by the second servo motor, and the gear and rack mechanism is used to realize the retraction and extension of the clamping arm. The rotating device includes a drive shaft, a third servo motor, a worm gear reducer, and a clamping rotating block. Both the drive shaft and the third servo motor are mounted on the mounting frame. The third servo motor is connected to the drive shaft through a coupling. The worm gear reducer is mounted on the lower end of the clamping arm. The drive shaft is connected to the worm gear reducer. The drive shaft drives the worm gear reducer to move. The clamping rotating block is mounted on the worm gear reducer.

[0007] Preferably, the lifting guide rail of the lifting device of this utility model adopts a symmetrical arrangement of double guide rails, and the slider is a high-precision linear guide rail slider, with a quantity of 4 sliders, and the sliders are precisely matched with the lifting guide rails.

[0008] Preferably, the present invention has four columns and two top beams, with each top beam fixed to the top of two columns.

[0009] Preferably, the flipping and pressing station of this utility model is equipped with a guardrail.

[0010] An assembly method for a flow assembly line of Roots pumps is characterized by the following steps: Initial loading and pre-assembly of the pump body and rotor at the initial loading station; Assembly station one for the installation of the inlet and outlet ends; Tilting and pressing station for bearing pressing and pump body tilting; Assembly station two for the installation of round nuts, bearing pressure plates, and oil slingers; Both tilting assembly stations one and two are equipped with tilting mechanisms for tilting the pump body at different angles and adjusting the clearance; Both horizontal rotation assembly stations one and two are equipped with lifting and rotating mechanisms for the installation of gears and expansion sleeves; Horizontal rotation inspection station for final clearance inspection; Tilting assembly station three for the installation of couplings and gear end oil slingers; Motor assembly at assembly station three; Assembly nameplate engraving and installation, inlet and outlet sticker affixing, and water cooling water connector installation at the tilting and marking assembly station; Finally, the entire assembly process is completed at the tilting and unloading station.

[0011] Preferably, this utility model has a crane, a tool plate and a traveling tooling plate at the online station. The crane is used to load the vacuum pump housing onto the traveling tooling plate that is stationed at the online station. Then, a bushing is installed on the rotor, and the crane is used to hoist the rotor into the rotor hole of the vacuum pump housing.

[0012] At assembly station one, there is a cantilever crane, tool plate, and accompanying tooling plate. After the accompanying tooling plate is moved to assembly station one, the step difference between the rotor and the housing is first checked and recorded using a depth gauge; then the cantilever crane is used to pick up the inlet and outlet ends and install them onto the housing; finally, the oil slinger ring and washer are assembled.

[0013] Preferably, this utility model includes a press-fitting machine, a lifting and rotating mechanism, a guardrail, and a flipping mechanism at the flipping press-fitting station. When the accompanying tooling plate moves to the press-fitting machine at the flipping press-fitting station, the bearing is placed into the bearing hole at the inlet and outlet end, and then the press-fitting machine presses the bearing to the bottom; a round nut is installed; the accompanying tooling plate moves to the flipping mechanism at the flipping press-fitting station, and the flipping mechanism flips the assembly 180 degrees; the accompanying tooling plate moves to the press-fitting machine at the flipping press-fitting station to install the movable side oil slinger ring and washer; the bearing is placed into the bearing hole of the housing, and then the press-fitting machine presses the bearing to the bottom;

[0014] At assembly station two, there is a tool plate and a traveling tool plate. The traveling tool plate is moved to assembly station two to assemble round nuts, bearing pressure plates, and oil slingers.

[0015] Preferably, this invention includes a flipping mechanism, a lifting and translating mechanism, and a tool plate at the first flipping assembly station. When the accompanying tool plate moves to the flipping mechanism at the first flipping assembly station, the assembly is flipped 180 degrees using the flipping mechanism. Then, the accompanying tool plate moves to the middle assembly area of ​​the first flipping assembly station to install the assembly gap shims and bearing pressure plates. Next, the accompanying tool plate moves again to the flipping mechanism's station, where the assembly is flipped 90 degrees using the flipping mechanism. The accompanying tool plate then moves to the transition section line, where the assembly is placed on the lifting and translating mechanism, and then the lifting and translating mechanism translates the assembly to the middle assembly area for gap detection.

[0016] At the second flip assembly station, there is a flipping mechanism, a lifting and translating mechanism, and a tool plate. When the accompanying tool plate moves to the second flip assembly station, the end face gap is first adjusted and the runout of the rotor shaft is checked. Then, the flipping mechanism is used to flip the accompanying tool plate 90°, the end face gap is re-measured and the data is recorded. Finally, the flipping mechanism is used again to flip the accompanying tool plate 90° and restore it to the initial position.

[0017] Preferably, this utility model has a lifting and rotating mechanism, a tool plate and a traveling tool plate at the first horizontal rotating assembly station. When the traveling tool plate moves to the first horizontal rotating assembly station, the gear batch number is recorded first, and then the driven gear is assembled. Next, the flat key, axial stop and expansion sleeve are installed in sequence, and finally the rotor clearance is adjusted and determined.

[0018] At the second horizontal rotary assembly station, there is a lifting and rotating mechanism, a tool plate, and a traveling tool plate. When the traveling tool plate moves to the lifting and rotating mechanism at the second horizontal rotary assembly station, the expansion sleeve should be locked first, and the end face clearance should be adjusted; then the clearance should be re-measured.

[0019] The horizontal rotation inspection station has a lifting and rotating mechanism, a tool plate, and a traveling tool plate. When the traveling tool plate moves to the lifting and rotating mechanism of the horizontal rotation inspection station, the gap is inspected and the results are recorded.

[0020] Preferably, this utility model has a flipping mechanism, a lifting and translating mechanism and a tool plate in the third flipping assembly station. After the accompanying tool plate moves to the third flipping assembly station, the gearbox is first assembled, then the coupling and the gear end oil slinger are installed; then, the accompanying tool plate is flipped 180°, the rear cover plate is installed, and finally the reset operation is completed.

[0021] Assembly station three has a cantilever crane, tool plate, and accompanying tooling plate. After the accompanying tooling plate is moved to assembly station three, the motor is installed after the motor components are assembled.

[0022] As a preferred embodiment, in the flip-mounted engraving assembly station, a nameplate engraving machine is used to engrave the nameplate with numbers, followed by the following assembly steps: installing the nameplate engraving, affixing the air intake and exhaust stickers, and installing the water cooling connector.

[0023] The flipping and unloading station has a flipping mechanism, a lifting and translating mechanism, and a tool plate. When the accompanying tooling plate moves to the flipping and unloading station, the flipping mechanism flips the assembly 90 degrees. Then, the accompanying tooling plate returns to the upper station via an automatic rotary station. At this time, the assembly is placed on the lifting and translating mechanism, which then moves it to the middle unloading position. Finally, a crane is used to lift the vacuum pump from the assembly onto the pallet.

[0024] Compared with existing technologies, this invention has the following advantages and effects: Through a thirteen-station rotary production line layout and coordinated equipment operation, the assembly time per unit is significantly improved compared to traditional purely manual assembly. The parallel operation design of each station achieves seamless connection of assembly processes, improving equipment utilization. Key stations are equipped with corresponding equipment, improving the coaxiality of bearing press-fitting, and the use of a servo-driven flipping mechanism enhances angular positioning accuracy. Manual handling is reduced, significantly lowering labor intensity. Rapid changeover via accompanying tooling plates and modular tooling fixture design adapt to various product specifications.

[0025] This invention, through innovative production line layout and equipment, achieves a transformation and upgrade of Roots pump assembly from traditional manufacturing to intelligent manufacturing, resulting in breakthrough improvements in efficiency, quality, and cost. It enables efficient and precise assembly and testing. An integrated chemical station design centralizes the functions of flipping, pressing, and testing, reducing material turnover; a modular design adapts to mixed-line production of multiple Roots pump models. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model and / or the prior art, the drawings used in the description of the embodiments and / or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional structural schematic diagram of a flow assembly line for a Roots pump, as described in this utility model example.

[0028] Figure 2 This is a top view of the assembly line for a Roots pump in an example of this utility model.

[0029] Figure 3 This is a three-dimensional structural diagram of the online workstation in an embodiment of this utility model.

[0030] Figure 4 This is a three-dimensional structural diagram of assembly station one in an embodiment of this utility model.

[0031] Figure 5 This is a three-dimensional structural diagram of the flipping and pressing station in an embodiment of this utility model.

[0032] Figure 6 This is a three-dimensional structural diagram of assembly station two in an embodiment of this utility model.

[0033] Figure 7 This is a three-dimensional structural diagram of the flipping assembly station one in the embodiments of this utility model.

[0034] Figure 8 This is a three-dimensional structural diagram of the second flip assembly station in this embodiment of the present invention.

[0035] Figure 9 This is a three-dimensional structural diagram of the horizontal rotating assembly station in this embodiment of the present invention.

[0036] Figure 10 This is a three-dimensional structural diagram of the second horizontal rotating assembly station in this utility model embodiment.

[0037] Figure 11 This is a three-dimensional structural diagram of the horizontal rotation detection station in an embodiment of this utility model.

[0038] Figure 12 This is a three-dimensional structural diagram of the flipping assembly station three in this embodiment of the present utility model.

[0039] Figure 13 This is a three-dimensional structural diagram of assembly station three in an embodiment of this utility model.

[0040] Figure 14 This is a three-dimensional structural diagram of the flipping off-line station in an embodiment of this utility model.

[0041] Figure 15 This is a three-dimensional structural diagram of the flipping mechanism in an embodiment of this utility model.

[0042] Figure 16 yes Figure 15 A magnified structural diagram of point A in the middle.

[0043] Figure 17 yes Figure 15 A magnified structural diagram of section B.

[0044] Figure 18 This is a three-dimensional structural diagram of the clamping device and the rotating device in the embodiments of this utility model.

[0045] In the diagram: 1-Onboard station; 2-Assembly station one; 3-Tilting pressing station; 4-Assembly station two; 5-Tilting assembly station one; 6-Tilting assembly station two; 7-Horizontal rotation assembly station one; 8-Horizontal rotation assembly station two; 9-Horizontal rotation inspection station; 10-Tilting assembly station three; 11-Assembly station three; 12-Engraving assembly station; 13-Tilting offboard station; 14-Conveyor line; 111-Overhead crane; 112-Tool plate; 21-Cantilever crane; 31-Pressure machine; 33-Lifting and rotating mechanism; 34-Guardrail; 51-Tilting mechanism; 52-Lifting and translating mechanism; 113-Traveling tooling plate;

[0046] 61-Gantry frame; 62-Lifting device; 63-Clamping device; 64-Rotating device; 611-Column; 612-Top beam; 621-Limiting plate; 622-Slider; 623-Top plate; 624-Base plate; 625-Slider connecting block; 626-Servo motor No. 1; 627-Lifting guide rail; 631-Clamping arm; 632-Gear and rack mechanism; 633-Servo motor No. 2; 634-Mounting bracket; 641-Drive shaft; 642-Servo motor No. 3; 643-Worm gear reducer; 644-Clamping rotating block. Detailed Implementation

[0047] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0048] Example

[0049] See Figures 1 to 18The assembly line for the Roots pump in this embodiment includes an upper loading station 1, an assembly station 2, a flip-over pressing station 3, an assembly station 2, a flip-over assembly station 1, a flip-over assembly station 1, a flip-over assembly station 2, a horizontal rotation assembly station 1, a horizontal rotation assembly station 2, a horizontal rotation inspection station 9, a flip-over assembly station 3, an assembly station 3, an engraving assembly station 12, a flip-over lower loading station 13, and a conveyor line 14. The upper loading station 1, assembly station 1, flip-over pressing station 3, assembly station 2, flip-over assembly station 1, flip-over assembly station 1, a flip-over assembly station 2, a horizontal rotation assembly station 1, a horizontal rotation inspection station 9, a flip-over assembly station 3, an assembly station 3, an engraving assembly station 11, and an engraving assembly station 12. Assembly station 12 and flip-off station 13 are arranged end to end along conveyor line 14 and form a rectangle. Conveyor line 14 is equipped with several accompanying tooling plates 113. Upline station 1 is equipped with a crane 111. Assembly station 1 and assembly station 3 are both equipped with cantilever cranes 21. Flip-off pressing station 3, horizontal rotation assembly station 1 7, horizontal rotation assembly station 2 8 and horizontal rotation inspection station 9 are all equipped with lifting and rotating mechanisms 33. Flip-off pressing station 3, flip-off assembly station 1 5, flip-off assembly station 2 6, flip-off assembly station 3 10 and flip-off station 13 are all equipped with flipping mechanisms 51. Flip-off pressing station 3 is also equipped with a pressing machine 31. Flip-off engraving assembly station 12 is equipped with a nameplate engraving machine.

[0050] In this embodiment, tool plates 112 are provided in the following stations: online station 1, assembly station 1, flip-press station 3, assembly station 2, flip-assembly station 1, flip-assembly station 1, horizontal rotation assembly station 1, horizontal rotation assembly station 2, horizontal rotation inspection station 9, flip-assembly station 3, assembly station 3, marking assembly station 12, and flip-off station 13.

[0051] The flipping mechanism 51 in this embodiment includes a gantry frame 61, a lifting device 62, a clamping device 63, and a rotating device 64. The gantry frame 61 includes columns 611 and top beams 612. The top beams 612 are fixed to the top of the columns 611, and the bottom of the columns 611 are fixed to the ground with bolts. There are four columns 611 and two top beams 612. Each top beam 612 is fixed to the top of two columns 611 to ensure a stable support effect.

[0052] The lifting device 62 in this embodiment includes a limiting plate 621, a slider 622, a top plate 623, a bottom plate 624, a slider connecting block 625, a first servo motor 626, and a lifting guide rail 627. The top plate 623 is fixed to the top crossbeam 612 by bolts. The lifting guide rail 627 passes through the top plate 623. The limiting plate 621 and the bottom plate 624 are respectively fixed to the top and bottom of the lifting guide rail 627. The slider connecting block 625 and the first servo motor 626 are both mounted on the top plate 623. The slider 622 is mounted on the slider connecting block 625, and the slider 622 cooperates with the lifting guide rail 627. The first servo motor 626 is connected to the slider 622 through a coupling. The limiting plate 621 is usually made of high-strength steel plate.

[0053] In this embodiment, the lifting guide rail 627 of the lifting device 62 adopts a symmetrical arrangement of double guide rails, and the slider 622 is a high-precision linear guide rail slider. There are four sliders 622, and the sliders 622 are precisely matched with the lifting guide rail 627. The slider connecting block 625 of the lifting device 62 can be equipped with a buffer rubber pad to reduce impact and vibration. The limit plate 621 can be equipped with a mechanical travel limit switch, which can work in conjunction with the control system. The surface can be marked with scale indicators for easy observation of the lifting travel in real time. Both the top plate 623 and the bottom plate 624 can adopt a box-type welded structure with internal reinforcing ribs and mounting holes at the four corners for easy overall assembly.

[0054] The clamping device 63 in this embodiment includes a clamping arm 631, a gear and rack mechanism 632, a second servo motor 633, and a mounting frame 634. The top of the mounting frame 634 is fixed to the bottom of the base plate 624. The gear and rack mechanism 632 is a bidirectional screw clamping mechanism. The structure of the bidirectional screw clamping mechanism is prior art and is clear to those skilled in the art. Both the gear and rack mechanism 632 and the second servo motor 633 are mounted on the mounting frame 634 and connected to the gear and rack mechanism 632. The upper end of the clamping arm 631 is movably mounted on the mounting frame 634 and connected to the gear and rack mechanism 632. The clamping arm 631 is driven by the second servo motor 633, and the gear and rack mechanism is used to realize the retraction and extension of the clamping arm 631. The inner side of the clamping arm 631 of the clamping device 63 may be provided with an anti-slip rubber pad, and the clamping device 63 has a self-locking function.

[0055] The rotating device 64 in this embodiment includes a drive shaft 641, a third servo motor 642, a worm gear reducer 643, and a clamping rotating block 644. Both the drive shaft 641 and the third servo motor 642 are mounted on a mounting bracket 634. The third servo motor 642 is connected to the drive shaft 641 via a coupling. The worm gear reducer 643 is mounted on the lower end of the clamping arm 631, and the drive shaft 641 is connected to the worm gear reducer 643. The drive shaft 641 drives the worm gear reducer 643 to move, and the clamping rotating block 644 is mounted on the worm gear reducer 643. The third servo motor 642 of the rotating device 64 can be connected to the drive shaft 641 via a reducer, enabling precise rotation of the clamping rotating block 644 within the range of 0-180°.

[0056] In this embodiment, the flipping mechanism 51 is linked to the production line through a PLC control system to achieve automated operation. During operation, after the accompanying tooling plate is conveyed to the workstation, the lifting device 62 descends to allow the clamping device 63 to grab the workpiece. After lifting to a safe height, the rotating device 64 flips the workpiece at a preset angle. After completing the operation, it resets. The flipping mechanism 51 may be equipped with safety protection devices, including overload protection, a fall protection device, and an emergency stop switch.

[0057] In this embodiment, the flipping and pressing station 3 is equipped with a guardrail 34.

[0058] The assembly method for the Roots pump assembly line in this embodiment is as follows: Station 1 is used for initial loading and pre-assembly of the pump body and rotor; Station 2 is used for the installation of the inlet and outlet ends; Station 3 is used for bearing press-fitting and pump body rotation; Station 4 is used for the installation of round nuts, bearing pressure plates, and oil slingers; Stations 5 and 6 are both equipped with rotation mechanisms 51 for pump body rotation at different angles and gap adjustment; Stations 7 and 8 are both equipped with lifting and rotating mechanisms 33 for the installation of gears and expansion sleeves; Station 9 is used for final gap detection; Station 10 is used for the installation of couplings and gear end oil slingers; the motor is assembled at Station 11; and at Station 12, the assembly nameplate is engraved, inlet and outlet stickers are affixed, and water-cooling connectors are installed. Finally, the entire assembly process is completed at Station 13.

[0059] In this embodiment, there is a crane 111, a tool plate 112 and a traveling tooling plate 113 at the upper station 1. The crane 111 is used to load the vacuum pump housing onto the traveling tooling plate 113 which is stationed at the upper station 1. Then, a bushing is installed on the rotor, and the crane 111 is used to hoist the rotor into the rotor hole of the vacuum pump housing.

[0060] At assembly station 2, there is a cantilever crane 21, a tool plate 112, and a traveling tool plate 113. After the traveling tool plate 113 is moved to assembly station 2, the step difference between the rotor and the housing is first checked and recorded using a depth gauge; then the cantilever crane 21 is used to pick up the intake and exhaust ends and install them onto the housing; finally, the oil slinger ring and gasket are assembled.

[0061] In this embodiment, the flipping press-fitting station 3 includes a press-fitting machine 31, a lifting and rotating mechanism 33, a guardrail 34, and a flipping mechanism 51. When the accompanying tooling plate 113 moves to the press-fitting machine at the flipping press-fitting station 3, the bearing is placed into the bearing hole at the inlet and outlet ends, and then the press-fitting machine 31 presses the bearing to the bottom; a round nut is installed; the accompanying tooling plate 113 moves to the flipping mechanism 51 at the flipping press-fitting station 3, and the flipping mechanism 51 flips the assembly 180 degrees; the accompanying tooling plate 113 moves to the press-fitting machine 31 at the flipping press-fitting station 3 to install the movable side oil slinger ring and washer; the bearing is placed into the bearing hole of the housing, and then the press-fitting machine 31 presses the bearing to the bottom;

[0062] At assembly station 2, there is a tool plate 112 and a traveling tool plate 113. The traveling tool plate 113 moves to assembly station 2 to assemble round nuts, bearing pressure plates, and oil slingers.

[0063] In this embodiment, the flipping assembly station 5 has a flipping mechanism 51, a lifting and translating mechanism 52, and a tool plate 112. The accompanying tooling plate 113 moves to the flipping mechanism 51 at the flipping assembly station 5, and the assembly is flipped 180 degrees using the flipping mechanism 51. Then, the accompanying tooling plate 113 moves to the middle assembly area of ​​the flipping assembly station 5 to install the assembly gap shims and bearing pressure plates. Next, the accompanying tooling plate 113 moves again to the station of the flipping mechanism 51, and the assembly is flipped 90 degrees using the flipping mechanism 51. The accompanying tooling plate 113 then moves to the transition section line, and the assembly is placed on the lifting and translating mechanism 52. The lifting and translating mechanism 52 then translates the assembly to the middle assembly area for gap detection.

[0064] At the flipping assembly station 26, there is a flipping mechanism 51, a lifting and translating mechanism 52, and a tool plate 112. When the accompanying tool plate 113 moves to the flipping assembly station 26, the end face gap is first adjusted and the runout of the rotor shaft is checked. Then, the flipping mechanism 51 is used to flip the accompanying tool plate 113 by 90°, the end face gap is re-measured and the data is recorded. Finally, the flipping mechanism 51 is used again to flip the accompanying tool plate 113 by 90° and restore it to the initial position.

[0065] In this embodiment, the horizontal rotary assembly station 7 has a lifting and rotating mechanism 33, a tool plate 112, and a traveling tooling plate 113. When the traveling tooling plate 113 moves to the horizontal rotary assembly station 7, the gear batch number is recorded first, and then the driven gear is assembled. Next, the flat key, axial stop block, and expansion sleeve are installed in sequence, and finally the rotor clearance is adjusted and determined.

[0066] The second horizontal rotary assembly station 8 has a lifting and rotating mechanism 33, a tool plate 112, and a traveling tool plate 113. When the traveling tool plate 113 moves to the lifting and rotating mechanism 33 of the second horizontal rotary assembly station 8, the expansion sleeve should be locked first, and the end face clearance should be adjusted; then the clearance should be re-measured.

[0067] The horizontal rotation detection station 9 has a lifting and rotating mechanism 33, a tool plate 112, and a traveling tool plate 113. When the traveling tool plate 113 moves to the lifting and rotating mechanism 33 at the horizontal rotation detection station 9, the gap is detected and the result is recorded.

[0068] In this embodiment, the flipping assembly station 3 10 has a flipping mechanism 51, a lifting and translating mechanism 52, and a tool plate 112. After the accompanying tooling plate 113 moves to the flipping assembly station 3 10, the gearbox is first assembled, then the coupling and the gear end oil slinger are installed; subsequently, the accompanying tooling plate 113 is flipped 180°, the rear cover plate is installed, and finally the reset operation is completed.

[0069] Assembly station 3 11 has a cantilever crane 21, tool plate 112 and accompanying tooling plate 113. After the accompanying tooling plate 113 moves to assembly station 3 11, the motor is installed after the motor components are assembled.

[0070] In this embodiment, at the flip-mount engraving assembly station 12, a nameplate engraving machine is used to engrave the nameplate with numbers, and then the following assembly processes are performed: installing the nameplate engraving, affixing the air intake and exhaust stickers, and installing the water cooling connector.

[0071] The flipping and unloading station 13 has a flipping mechanism 51, a lifting and translating mechanism 52, and a tool plate 112. When the accompanying tooling plate 113 moves to the flipping and unloading station 13, the flipping mechanism 51 flips the assembly 90 degrees. Then, the accompanying tooling plate 113 returns to the upper station 1 via an automatic rotary station. At this time, the assembly is placed on the lifting and translating mechanism 52, and then the lifting and translating mechanism 52 moves it to the middle unloading position. Finally, the overhead crane 111 lifts the vacuum pump from the assembly to the pallet.

[0072] Furthermore, it should be noted that the specific embodiments described in this specification may differ in the shape and name of their components. The above description is merely illustrative of the structure of this utility model. All equivalent or simple variations made based on the structure, features, and principles described in this utility model patent concept are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, all of which should fall within the protection scope of this utility model.

Claims

1. A flow assembly line for Roots pumps, characterized in that: The assembly line includes the following stations: 1 (online), 2 (assembly station 1), 3 (flipping and pressing station), 4 (assembly station 2), 5 (flipping and assembly station 1), 6 (flipping and assembly station 2), 7 (flipping and unloading station), 8 (flipping and inspection station), 9 (flipping and assembly station 3), 10 (flipping and pressing station), 11 (flipping and assembly station 3), 12 (engraving and assembly station), 13 (flipping and unloading station), and 14 (conveyor line). Workstation (12) and flip-off workstation (13) are arranged end to end along the conveyor line (14) and form a rectangle. The conveyor line (14) is equipped with several accompanying tooling plates (113). The upper workstation (1) is equipped with a crane (111). The first assembly workstation (2) and the third assembly workstation (11) are both equipped with cantilever cranes (21). The flip-off pressing workstation (3), the first horizontal rotation assembly workstation (7), the second horizontal rotation assembly workstation (8) and the third horizontal rotation inspection workstation (9) are all equipped with lifting and rotating mechanisms (33). The flip-off pressing workstation (3), the first flip assembly workstation (5), the second flip assembly workstation (6), the third flip assembly workstation (10) and the flip-off workstation (13) are all equipped with flipping mechanisms (51). The flip-off pressing workstation (3) is also equipped with a pressing machine (31).

2. The assembly line for a Roots pump according to claim 1, characterized in that: Tool plates (112) are provided in the following stations: online station (1), assembly station one (2), flip press station (3), assembly station two (4), flip assembly station one (5), flip assembly station two (6), horizontal rotation assembly station one (7), horizontal rotation assembly station two (8), horizontal rotation inspection station (9), flip assembly station three (10), assembly station three (11), engraving assembly station (12) and flip offline station (13).

3. A flow assembly line for a Roots pump according to claim 1, characterized in that: The flipping mechanism (51) includes a gantry frame (61), a lifting device (62), a clamping device (63), and a rotating device (64). The gantry frame (61) includes a column (611) and a top beam (612). The top beam (612) is fixed to the top of the column (611), and the bottom of the column (611) is fixed to the ground with bolts. The lifting device (62) includes a limiting plate (621), a slider (622), a top plate (623), a bottom plate (624), a slider connecting block (625), a first servo motor (626), and a lifting guide rail (627). The top plate (623) is bolted to the top beam (612). The lifting guide rail (627) is fixed, passing through the top plate (623). The limiting plate (621) and the bottom plate (624) are fixed to the top and bottom of the lifting guide rail (627), respectively. The slider connecting block (625) and the first servo motor (626) are both mounted on the top plate (623). The slider (622) is mounted on the slider connecting block (625), and the slider (622) cooperates with the lifting guide rail (627). The first servo motor (626) is connected to the slider (622) through a coupling. The clamping device (63) includes a clamping arm (631), a gear and rack mechanism (632), a second servo motor (633), and a mounting bracket. (634), the top of the mounting bracket (634) is fixed to the bottom of the base plate (624), the gear and rack mechanism (632) is a two-way screw clamping mechanism, the gear and rack mechanism (632) and the second servo motor (633) are both mounted on the mounting bracket (634), the second servo motor (633) and the gear and rack mechanism (632) are connected, the upper end of the clamping arm (631) is movably mounted on the mounting bracket (634) and connected to the gear and rack mechanism (632), the clamping arm (631) is driven by the second servo motor (633), and the gear and rack mechanism is used to realize the opening and closing action of the clamping arm (631); the rotating device (64) The device includes a drive shaft (641), a third servo motor (642), a worm gear reducer (643), and a clamping rotating block (644). The drive shaft (641) and the third servo motor (642) are both mounted on a mounting bracket (634). The third servo motor (642) is connected to the drive shaft (641) via a coupling. The worm gear reducer (643) is mounted on the lower end of the clamping arm (631). The drive shaft (641) and the worm gear reducer (643) are connected. The drive shaft (641) drives the worm gear reducer (643) to move. The clamping rotating block (644) is mounted on the worm gear reducer (643).

4. A flow assembly line for a Roots pump according to claim 1, characterized in that: The flipping and pressing station (3) is equipped with a guardrail (34).

5. A flow assembly line for a Roots pump according to claim 1, characterized in that: The flip-mount engraving assembly station (12) is equipped with a nameplate engraving machine.

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