Phaser assembly positioning mechanism

Abstract

The present invention provides a phaser assembly and positioning mechanism, which relates to the field of phasers and includes a workbench and a loading rack. The loading rack is provided with a limit assembly for limiting the transfer pallet to the loading station. A lower positioning assembly is provided at a transfer station on the side of the workbench close to the loading rack. The lower positioning assembly includes a lower positioning shaft and a lower positioning portion. The upper end of the lower centering shaft is provided with a first core shaft for centering the inner rotor of the phaser and a second core shaft for centering the base plate of the phaser, from top to bottom. The lower positioning portion is used to axially position the base plate and inner rotor of the phaser. The centering station on the other side of the workbench is provided with an upper positioning assembly and a lifting drive assembly for driving the upper positioning assembly up and down. The workbench is also provided with a material shifting assembly and a transverse movement assembly. This phaser assembly and positioning mechanism achieves the coincidence of the process assembly datum and the product design datum, reduces the tolerance stacking caused by the assembly and positioning process, and improves the product assembly accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of phase shifters, and in particular to a phase shifter assembly positioning mechanism. Background Art

[0002] The VCT phaser is used to dynamically adjust the rotation of the engine camshaft relative to the engine crankshaft in order to advance or retard the opening and closing motion of the intake and exhaust valves.

[0003] Concentricity is a key parameter generated during the phaser assembly process, determining the smooth properties of the phaser during high-speed engine operation, such as vibration and NVH performance. Therefore, during the phaser assembly process, it is necessary to ensure the concentricity between various components, especially the concentricity between the inner rotor and the outer stator. Since the product's design reference is the center of the inner rotor, it is necessary to ensure that the inner rotor center is the reference as much as possible during the assembly process. This can minimize the tolerance stacking between parts and reduce the impact of assembly tolerances on product performance.

[0004] In the prior art, the transport pallet of the operating phaser is typically lifted and positioned directly to the set position. The inner rotor is then held in position by a radially deformable positioning mandrel. The outer rotor is then clamped and limited by an outer stator clamping device. The phaser is then clamped and locked by a vertically movable clamping device. Finally, the screws are tightened by a bolting mechanism to complete the entire phaser assembly and positioning process. In the aforementioned prior art phaser assembly equipment, since the mandrel that holds the inner rotor is radially deformable, it is essentially based on the clamping of the outer stator. This results in an inconsistency between the assembly reference and the product design reference, significantly affecting the tolerances of the assembly process and the performance parameters of the assembled phaser. Furthermore, the outer stator is easily deformed by the clamping, which not only causes the phaser's appearance to not meet the requirements, but also makes it difficult for the final performance to meet the design requirements. Summary of the Invention

[0005] In order to overcome at least one of the defects in the above-mentioned prior art, the present invention provides a phaser assembly positioning mechanism, which can achieve precise positioning during the phase assembly process, realize the coincidence of the process assembly benchmark and the product design benchmark, reduce the tolerance superposition caused by the assembly positioning process, and improve the product assembly accuracy.

[0006] The present invention provides a phaser assembly and positioning mechanism: it includes a workbench and a loading rack, the loading rack is connected to one side of the workbench and is used for the transfer pallet carrying the phaser to pass through in sequence, the loading rack is provided with a limit assembly for positioning the transfer pallet moved to a set position to the loading station, the workbench is provided with a lower positioning assembly on the transfer station close to the loading rack, the lower positioning assembly includes a lower positioning shaft and a lower positioning portion, the upper end of the lower centering shaft is provided with a first core shaft for centering the inner rotor of the phaser and a second core shaft for centering the bottom plate of the phaser in sequence from top to bottom, the lower positioning portion is used to axially position the bottom plate and the inner rotor of the phaser ; An upper positioning assembly and a lifting drive assembly for driving the upper positioning assembly to move up and down are provided on the centering station on the other side of the workbench. A material moving assembly and a transverse moving assembly are also provided on the workbench. When the shipping pallet carrying the phaser moves to the loading station, the material moving assembly is used to transfer the phaser on the transfer pallet to the lower positioning assembly of the transfer station, and the transverse moving assembly is used to drive the lower positioning assembly from the transfer station to the centering station. The lifting drive assembly is used to drive the upper positioning assembly downward to be press-fitted and positioned on the top plate of the phaser, and a screw gun for automatically tightening the connecting screws on the top plate is also provided on the upper positioning assembly.

[0007] Compared with the prior art, the phaser assembly positioning mechanism of the present invention has the following advantages:

[0008] The phaser assembly and positioning mechanism of the present invention is a special tool, which adds the phaser material shifting and lateral movement process of the lower positioning component compared to traditional assembly equipment, that is, in the present invention, the phaser is transferred from the transfer pallet to the specific lower positioning component for initial positioning, and the first core shaft and the second core shaft on the lower positioning component are used to achieve synchronous centering of the inner rotor and the base plate, and the phaser is axially pressed by the upper positioning component to achieve compression positioning of the top plate, and finally the pre-installed screws are automatically tightened by the screw gun; this process uses the inner rotor centering as the benchmark for the positioning of the phaser, that is, the coincidence of the process assembly benchmark and the product design benchmark is achieved, reducing the tolerance superposition caused by the assembly and positioning process, and improving the product assembly accuracy and performance.

[0009] Furthermore, the loading rack includes two profiles parallel to each other, the two profiles are connected to the side walls of the workbench through a fixed plate, and a channel for the transfer pallet to slide is formed between the two profiles. A vertically arranged lifting cylinder is connected to the fixed plate, and the driving end of the lifting cylinder is used to lift the transfer pallet to the loading station.

[0010] Furthermore, the material moving assembly includes a material moving rack connected to the workbench, the material moving rack is provided with a rotating cylinder and a first lifting drive cylinder for driving the rotating cylinder to move up and down, the power output end of the rotating cylinder is connected to a horizontally arranged rotating arm, both ends of the rotating arm are connected to a vertically retractable mounting plate, the mounting plate is provided with a clamping member for pressing on the top plate and a first clamping cylinder for clamping the phaser, and the clamping block of the first clamping cylinder protrudes from the lower end surface of the clamping member.

[0011] Furthermore, the lower positioning assembly includes a lower fixed seat and a second clamping cylinder connected to the workbench, and the clamping blocks of the second clamping cylinder are distributed on the outer periphery of the lower fixed seat, and the lower positioning shaft is vertically connected to the lower fixed seat.

[0012] As an improvement, the lower fixed seat is provided with a accommodating cavity with an upper opening, and a lower positioning sleeve which can slide vertically is provided in the accommodating cavity. The inner side of the upper end of the lower positioning sleeve is provided with a stop step corresponding to the limiting boss on the outer wall of the lower positioning shaft, and a first elastic member is provided between the lower end of the lower positioning sleeve and the bottom of the accommodating cavity.

[0013] As a further improvement, sealing members are provided between the inner wall of the upper end of the lower positioning sleeve and the outer wall of the lower positioning shaft, as well as between the outer wall and the inner wall of the accommodating chamber, so that a sealed chamber is formed in the accommodating chamber, and an oil inlet joint connected to the sealed chamber is connected to the outer wall of the lower fixed seat, and the outer end of the oil inlet joint is connected to the hydraulic station.

[0014] Furthermore, the upper positioning assembly includes an upper fixed seat connected to the driving end of the lifting drive assembly, the upper fixed seat is connected to an upper positioning shaft, the lower end of the upper positioning shaft is provided with a positioning column and an upper positioning step corresponding to the preset step at the upper end of the inner rotor; the top of the lower positioning shaft is provided with a positioning hole for the positioning column to be inserted and matched, and the outer wall of the lower positioning shaft is also provided with a lower positioning step corresponding to the preset step at the lower end of the inner rotor.

[0015] The locking plate is secured on one side of the cam face and is adapted to engage the locking plate, wherein the locking plate is secured on one side of the cam face and is adapted to engage the locking plate, wherein the locking plate is secured on one side of the cam face and is adapted to engage the locking plate.

[0016] Furthermore, the lifting drive assembly includes a second lifting drive cylinder connected to the lower end of the workbench top plate, a positioning plate is connected to the driving end of the lifting drive cylinder, four guide columns are connected to the positioning plate, the four guide columns are slidably passed through the workbench top plate, and the upper fixed seat is connected to the upper ends of the four guide columns.

[0017] As a further improvement, the lower end of the upper fixing seat is further provided with at least two clamping blocks located on the periphery of the upper positioning shaft and a clamping drive cylinder for driving each of the clamping blocks to move horizontally to clamp the outer peripheral wall of the phaser.

[0018] Other improved features and advantages of the present invention will be described in the following detailed description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purposes and other advantages of the present invention can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional structural diagram of the phase shifter assembly positioning mechanism of the present invention;

[0020] Figure 2 It is a front view of the phaser assembly positioning mechanism of the present invention;

[0021] Figure 3 This is a transverse cross-sectional view of the phase shifter assembly positioning mechanism of the present invention along the positioning base;

[0022] Figure 4 It is a cross-sectional view of the upper positioning assembly and the lower positioning assembly after mold closing in the present invention;

[0023] Figure 5 It is an enlarged structural diagram of X in the present invention;

[0024] Figure 6 A partial cross-sectional view of the top plate centering sleeve of the present invention;

[0025] Figure 7 This is a schematic diagram of the connection structure between the lower fixed base, the second clamping jaw cylinder and the workbench top plate in the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the lifting drive assembly in the present invention;

[0027] Figure 9 It is a partial schematic diagram of the connection structure between the upper positioning assembly and the lifting drive assembly in the present invention;

[0028] Figure 10 This is a structural diagram of the connection between the first gripper cylinder and the rotating arm of the present invention;

[0029] Figure 11 This is a schematic diagram from another angle of the connection structure between the first clamping jaw cylinder and the rotating arm in the present invention.

[0030] Description of reference numerals:

[0031] 1. Workbench; 2. Loading rack; 3. Transfer tray; 4. Lower positioning shaft; 5. Inner rotor; 6. First mandrel; 7. Bottom plate; 8. Second mandrel; 9. Top plate; 10. Screw gun; 11. Profile; 12. Fixing plate; 13. Lifting cylinder; 14. Material transfer rack; 15. Rotating cylinder; 16. First lifting drive cylinder; 17. Rotating arm; 18. Mounting plate; 19. Pressing element; 20. First clamping jaw cylinder; 21. Lower fixing seat; 22. Second clamping jaw cylinder; 23. Accommodating chamber; 24. Lower positioning sleeve; 25. Stop step; 26. First elastic member; 27. Oil inlet connector; 28. Upper fixing seat; 29. ​​Upper positioning shaft; 30. Positioning plug Column; 31. Upper positioning step; 32. Positioning socket; 33. Lower positioning step; 34. Top plate centering sleeve; 35. Top plate clamping sleeve; 36. First positioning boss; 37. Second positioning boss; 38. Third positioning boss; 39. Fourth positioning boss; 40. Fifth positioning boss; 41. Second elastic member; 42. Third core shaft; 43. Second lifting drive cylinder; 44. Positioning plate; 45. Guide column; 46. Clamping block; 47. Clamping drive cylinder; 48. Screw gun drive assembly; 49. Horizontal telescopic block; 50. Third elastic member; 51. Transverse drive cylinder; 52. Slide plate; 53. First conical surface; 54. Cylindrical surface; 55. Second conical surface. DETAILED DESCRIPTION

[0032] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.

[0033] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "fixed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0034] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] See also Figures 1 to 11 As shown, the embodiment of the present application discloses a phaser assembly positioning mechanism, including a rectangular workbench 1 and a loading rack 2, a rectangular workbench top plate 9 is provided on the top of the workbench 1, the loading rack 2 is connected to one side of the workbench 1 and is used for the transfer tray 3 carrying the phaser to pass through in sequence, and a limiting component for positioning the transfer tray 3 to the loading station is provided on the loading rack 2. Specifically, the loading rack 2 includes two mutually parallel profiles 11, the two profiles 11 are connected to the side wall of the workbench 1 through a fixing plate 12, and a space for the transfer tray 3 to pass through is formed between the two profiles 11. The channel for the sliding of the disc 3, a vertically arranged lifting cylinder 13 is connected to the fixed plate 12, and the driving end of the lifting cylinder 13 is connected to a ejection plate, and the upper end of the ejection plate is connected with a limiting part for inserting and limiting to the preset limiting slot at the bottom of the transfer pallet 3, which is used to lift the transfer pallet 3 moved to the set position and limit it to the loading station; and in order to ensure the stability of the lifting and lowering of the transfer pallet 3, four rectangularly distributed guide slides are connected to the lower end surface of the lifting plate, and four corresponding guide sleeves are provided on the fixed plate 12, and the four guide slides are respectively slidably fitted in the four guide sleeves.

[0036] In addition, in the above structure, a lower positioning assembly is provided on the transfer station on the side of the workbench 1 close to the loading rack 2. The lower positioning assembly includes a lower positioning shaft 4 and a lower positioning portion. The upper end of the lower centering shaft is provided with a first core shaft 6 for centering the inner rotor 5 of the phaser and a second core shaft 8 for centering the base plate 7 of the phaser from top to bottom. The lower positioning portion is used to axially position the base plate 7 and the inner rotor 5 of the phaser; an upper positioning assembly and a lifting drive assembly for driving the upper positioning assembly to move up and down are provided on the centering station on the other side of the workbench 1. A material moving assembly and a transverse moving assembly are also provided on the workbench 1; when the shipping pallet carrying the phaser moves to the set position, the lifting assembly is lifted. The cylinder 13 is used to drive the transfer pallet 3 to be lifted to the loading station and remain stationary. The material moving assembly is used to transfer the phaser on the transfer pallet 3 to the lower positioning assembly of the transfer station for preliminary positioning. The transverse movement assembly is used to drive the lower positioning assembly to move from the transfer station to the centering station. The lifting drive assembly is used to drive the upper positioning assembly downward to be pressed and positioned on the top plate 9 of the phaser, so as to realize the centering of the inner rotor 5 and the bottom plate 7 of the phaser and the axial compression positioning of the integrated phaser. A screw gun 10 is also provided on the upper positioning assembly for automatically tightening the connecting screws on the top plate 9. When the positioning of the various components of the phaser is stable, the pre-installed connecting screws on the phaser are automatically tightened by the screw gun 10.

[0037] In this embodiment, see the attached Figure 4 、 5 and 7, the lower positioning assembly also includes a lower fixed seat 21 and a second clamping cylinder 22 connected to the workbench 1, and the clamping blocks of the second clamping cylinder 22 are distributed on the outer periphery of the lower fixed seat 21, and the lower positioning shaft 4 is vertically connected to the lower fixed seat 21; when the phaser is on the lower positioning shaft 4 at a predetermined position, the clamping block of the second clamping cylinder 22 is clamped and limited on the outer wall of the phaser, further limiting it. Additionally, a receiving cavity 23 with an upper opening is provided on the lower fixing seat 21. The lower positioning shaft 4 is connected to the bottom center of the receiving cavity 23. A lower positioning sleeve 24 is also disposed within the receiving cavity 23, allowing for vertical sliding. A stop step 25 is disposed on the inner side of the upper end of the lower positioning sleeve 24, corresponding to a stop boss on the outer wall of the lower positioning shaft 4. A first elastic member 26 is disposed between the lower end of the lower positioning sleeve 24 and the bottom of the receiving cavity 23. The first elastic member 26 is used to force the lower positioning sleeve 24 to maintain an upward movement until the stop step 25 abuts the stop boss. In this structure, the lower positioning sleeve 24 supports the phaser during pre-positioning and acts as a buffer during the downward pressure of the upper positioning assembly, ensuring that the inner hole of the phaser inner rotor 5 can smoothly engage the first core shaft 6, achieving centering of the inner rotor 5. Furthermore, the provision of the first elastic member 26 in this structure facilitates demolding of the phaser after assembly, providing an upward thrust during demolding. In this structure, the lower positioning sleeve 24 and the lower positioning step 33 form a lower positioning portion.

[0038] In addition, in the above structure, see the attached Figure 4 , seals are provided between the inner wall of the upper end of the lower positioning sleeve 24 and the outer wall of the lower positioning shaft 4, as well as between the outer wall and the inner wall of the accommodating chamber 23, so that a sealed chamber is formed in the accommodating chamber 23; and an oil inlet joint 27 connected to the sealed chamber is connected to the outer wall of the lower fixing seat 21, and the outer end of the oil inlet joint 27 is connected to the hydraulic station. By introducing hydraulic oil into the sealed chamber, the lower positioning sleeve 24 is driven to move further upward, thereby achieving complete axial compression and limiting of the phaser, thereby avoiding relative rotation between components when the screw gun 10 is used to tighten the screws subsequently.

[0039] More specifically, in this embodiment, the upper positioning assembly includes an upper fixed seat 28 connected to the driving end of the lifting drive assembly, and the upper fixed seat 28 is connected to the upper positioning shaft 29. The lower end of the upper positioning shaft 29 is provided with a positioning column 30 and an upper positioning step 31 corresponding to the preset step at the upper end of the inner rotor 5; the top of the lower positioning shaft 4 is provided with a positioning hole 32 for the positioning column 30 to be inserted and matched, and the outer wall of the lower positioning shaft 4 is also provided with a lower positioning step 33 corresponding to the preset step at the lower end of the inner rotor 5. When the upper and lower positioning components are molded and positioned, the positioning pin 30 on the upper positioning shaft 29 is inserted into the positioning socket 32 ​​to ensure that the upper and lower structures can be aligned each time the upper and lower positioning components are molded, thereby ensuring continuous and repeated assembly accuracy; and under the driving action of the upper positioning step 31, the phaser is driven to move slowly downward until the preset step at the lower end of the inner rotor 5 abuts against the lower positioning step 33, thereby realizing the axial compression limit of the inner rotor 5 of the phaser, and the inner rotor 5 is centered by the first core shaft 6, and the bottom plate 7 is centered by the second core shaft 8, thereby realizing accurate centering of the inner rotor 5 during product assembly, which meets the design benchmark.

[0040] In some other embodiments, a positioning column 30 may be provided on the top of the lower positioning shaft 4 , and a positioning hole 32 may be provided on the bottom of the upper positioning shaft 29 .

[0041] For further information, see the attached Figure 4The upper positioning assembly also includes a top plate centering sleeve 34 and a top plate pressing sleeve 35. The top plate centering sleeve 34 is slidably sleeved on the outside of the upper positioning shaft 29 in the axial direction, and the top plate pressing sleeve 35 is slidably sleeved on the outside of the top plate centering sleeve 34 in the axial direction. A first positioning boss 36 is convexly provided on the outer wall of the upper positioning shaft 29, and a second positioning boss 37 that cooperates with the first positioning boss 36 is concavely provided on the inner wall of the top plate centering sleeve 34. The outer wall of the top plate centering sleeve 34 is convexly provided A third positioning boss 38 is provided, a fourth positioning boss 39 that cooperates with the third positioning boss 38 is provided at the lower end of the inner wall of the top plate clamping sleeve 35, a fifth positioning boss 40 is provided at the upper end of the inner wall of the top plate clamping sleeve 35, and a second elastic member 41 is provided between the fifth positioning boss 40 and the upper fixed seat 28; the lower end of the top plate centering sleeve 34 extends beyond the lower end surface of the top plate clamping sleeve 35 to form a third core shaft 42 for guiding and centering the inner hole of the top plate 9. In this structure, in the initial state, under the action of the second elastic member 41, the second positioning boss 37 abuts the first positioning boss 36, and the fourth positioning boss 39 abuts the third positioning boss 38. During the downward movement of the upper positioning assembly, the positioning pin 30 first engages with the positioning socket 32. As the upper positioning assembly continues to descend, the third core shaft 42 begins to guide and adjust the inner hole of the top plate 9 and center it. When the top plate 9 is also centered, the lower end face of the top plate clamping sleeve 35 is pressed against the top plate 9, achieving axial pre-compression positioning of the phaser. Then, hydraulic pressure is introduced into the sealing chamber, and the oil pressure further drives the lower positioning sleeve 24 upward to achieve complete axial compression and limit the phaser, effectively preventing relative rotation between the components when the screw gun 10 is subsequently used to tighten the screws. In the above structure, a limit ring is mounted on the upper end of the top plate clamping sleeve 35 to limit the downward displacement of the upper fixing seat 28 and prevent the upper positioning assembly from exceeding the downward travel range and causing overpressure of the product.

[0042] In the above structure, see the attached Figure 6 The outer wall of the third core shaft 42 is provided with a first conical surface 53, a cylindrical surface 54 and a third conical surface in sequence from bottom to top, and the diameter of the cylindrical surface 54 is smaller than the diameter of the top plate centering sleeve 34. During the press-fitting process, the inner hole of the top plate 9 is first roughly positioned by the first conical surface 53, and then it is guided by the cylindrical surface 54, and finally the second conical surface 55 is further pressed on the conical surface of the upper end of the inner hole of the top plate 9, effectively ensuring the accurate positioning of the inner hole of the top plate 9.

[0043] In addition, in order to facilitate the cooperation between the positioning pin 30 and the positioning socket 32, a first guide bevel is provided on the outer periphery of the bottom of the positioning plug at the lower end of the upper positioning shaft 29, and a second guide bevel is provided on the top of the inner wall of the positioning socket 32 ​​at the upper end of the lower positioning shaft 4; and in this structure, a third guide bevel is also provided on the outer periphery of the top of the first core shaft 6 to facilitate the centering cooperation with the inner hole of the inner rotor 5.

[0044] In this embodiment, see the attached Figure 3 、 8 9, the lifting drive assembly includes a second lifting drive cylinder 43 connected to the lower end of the top plate 9 of the workbench 1. A positioning plate 44 is connected to the driving end of the second lifting drive cylinder 43. Four guide posts 45 are connected to the positioning plate 44. The four guide posts 45 are slidably inserted into the top plate 9 of the workbench 1, and the upper fixed seat 28 is connected to the upper ends of the four guide posts 45. The lower end of the upper fixed seat 28 is also provided with at least two clamping blocks 46 located on the periphery of the upper positioning shaft 29, and a clamping drive cylinder 47 for driving each of the clamping blocks 46 to move horizontally to clamp the outer peripheral wall of the phaser. In this structure, the second lifting drive cylinder 43 drives the upper fixed seat 28 to rise and fall, thereby achieving axial compression of the upper positioning assembly on the top plate 9 of the phaser.

[0045] In this embodiment, see the attached Figure 2 、 10 and 11. The material moving assembly includes a material moving frame 14 connected to the workbench 1, and the material moving frame 14 is provided with a rotating cylinder 15 and a first lifting drive cylinder 16 for driving the rotating cylinder 15 to move up and down. The power output end of the rotating cylinder 15 is connected to a horizontally arranged rotating arm 17, and both ends of the rotating arm 17 are connected to a mounting plate 18. The mounting plate 18 is provided with a clamping member 19 for pressing on the phaser top plate 9 and a first clamping cylinder 20 for clamping the phaser, and the horizontal telescopic block 49 of the first clamping cylinder 20 is connected with a clamping block (not shown in the figure), each clamping block vertically protrudes from the lower end face of the clamping member 19. In the initial state, the clamping block of the first clamping cylinder 20 is located on the outside of the phaser when it is opened. When grabbing the phaser, the first lifting drive cylinder 16 drives the mounting plate 18 to descend to the clamping member 19 and press it on the top plate 9 of the phaser, and then clamps the outer peripheral wall of the limit phaser through the clamping block of the first clamping cylinder 20. In this structure, the mounting plate 18 is retractable in the vertical direction, and a third elastic member 50 is provided between the mounting plate 18 and the rotating arm 17 to achieve axial buffering when the phase shifter is captured.

[0046] In addition, in this embodiment, during the phase shifter assembly and positioning process, starting from the second transfer pallet 3, the two first clamping cylinders 20 are used to simultaneously clamp the phase shifter in the transfer pallet 3 and the assembled phase shifter on the lower positioning assembly, and the rotating cylinder 15 is driven to rotate and interchange the two to improve the efficiency of automated flow.

[0047] In addition, see the attached Figure 3 and 8The transverse movement assembly in this embodiment includes a slide 52 and a transverse movement drive cylinder 51 that drives the slide 52 to move horizontally. The lower fixed seat 21 is connected to the slide 52, and the slide 52 is slidably connected to the top plate 9 of the workbench 1 through a linear guide rail. The slide 52 is driven by the transverse movement drive cylinder 51 to move back and forth between the transfer station and the centering station.

[0048] For details, see the attached Figure 1 Four screw gun driving assemblies 48 are provided on the top plate 9 of the workbench 1 and are located on the periphery of the upper fixing seat 28. The screwdriver heads of the four screw guns 10 pass through the upper fixing seat 28 to tighten the four screws of the phaser top plate 9; the four screw gun driving assemblies 48 are used to drive the screw guns 10 to translate in the XY axis direction to tighten the screws of phasers of different specifications.

[0049] In the description of this embodiment, the first elastic member 26 , the second elastic member 41 and the third elastic member 50 are all springs.

[0050] In the description of this application, the description with reference to the terms "this embodiment", "some embodiments", etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are mutually inconsistent.

[0051] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A phaser assembly positioning mechanism, characterized by: The invention comprises a workbench (1) and a loading rack (2), wherein the loading rack (2) is connected to one side of the workbench (1) and is used for sequentially passing a transfer tray (3) carrying a phaser, and the loading rack (2) is provided with a limit assembly for positioning the transfer tray (3) moved to a set position at a loading station, and a lower positioning assembly is provided at a transfer station on one side of the workbench (1) close to the loading rack (2), and the lower positioning assembly comprises a lower positioning shaft (4) and a lower positioning portion, and the upper end of the lower positioning shaft (4) is sequentially provided with a first core for centering the inner rotor (5) of the phaser from top to bottom. The workbench (1) is provided with a first core shaft (6) and a second core shaft (8) for centering the base plate (7) of the phaser, and the lower positioning portion is used to axially position the base plate (7) and the inner rotor (5) of the phaser; an upper positioning component and a lifting drive component for driving the upper positioning component to move up and down are provided on the centering station on the other side of the workbench (1); a material shifting component and a transverse moving component are also provided on the workbench (1); when the shipping pallet carrying the phaser moves to the loading station, the material shifting component is used to transfer the phaser on the transfer pallet (3) to the lower positioning component of the transfer station, and the transverse moving component is used to drive the upper positioning component to move up and down. The lower positioning assembly moves from the transfer station to the centering station, and the lifting drive assembly is used to drive the upper positioning assembly downward to be pressed and positioned on the top plate (9) of the phaser, and the upper positioning assembly is also provided with a screw gun (10) for automatically tightening the connecting screws on the top plate (9); the lower positioning assembly also includes a lower fixed seat (21) and a second clamping cylinder (22) connected to the workbench (1), and the clamping blocks of the second clamping cylinder (22) are distributed on the outer periphery of the lower fixed seat (21), and the lower positioning shaft (4) is vertically connected to the lower fixed seat (2 1); the upper positioning assembly includes an upper fixed seat (28) connected to the driving end of the lifting drive assembly, the upper fixed seat (28) is connected to an upper positioning shaft (29), the lower end of the upper positioning shaft (29) is provided with a positioning plug (30) and an upper positioning step (31) corresponding to the preset step at the upper end of the inner rotor (5); the top of the lower positioning shaft (4) is provided with a positioning socket (32) for the positioning plug (30) to be inserted and matched, and the outer wall of the lower positioning shaft (4) is also provided with a lower positioning step (33) corresponding to the preset step at the lower end of the inner rotor (5).

2. The phase shifter assembly positioning mechanism according to claim 1, characterized in that: The loading rack (2) includes two mutually parallel profiles (11), the two profiles (11) are connected to the side wall of the workbench (1) through a fixed plate (12), and a channel for the transfer tray (3) to slide is formed between the two profiles (11), and a vertically arranged lifting cylinder (13) is connected to the fixed plate (12), and the driving end of the lifting cylinder (13) is used to lift the transfer tray (3) to the loading station.

3. The phase shifter assembly positioning mechanism according to claim 1, characterized in that: The material moving assembly includes a material moving frame (14) connected to the workbench (1), the material moving frame (14) is provided with a rotary cylinder (15) and a first lifting drive cylinder (16) for driving the rotary cylinder (15) to move up and down, the power output end of the rotary cylinder (15) is connected to a horizontally arranged rotary arm (17), both ends of the rotary arm (17) are connected to a vertically retractable mounting plate (18), the mounting plate (18) is provided with a clamping member (19) for pressing on the top plate (9) and a first clamping cylinder (20) for clamping the phaser, and the clamping block of the first clamping cylinder (20) exceeds the lower end surface of the clamping member (19).

4. The phase shifter assembly positioning mechanism according to claim 1, characterized in that: The lower fixing seat (21) is provided with a receiving cavity (23) with an upper opening, and a lower positioning sleeve (24) which can slide vertically is provided in the receiving cavity (23). A stop step (25) corresponding to the limiting boss on the outer wall of the lower positioning shaft (4) is provided on the inner side of the upper end of the lower positioning sleeve (24), and a first elastic member (26) is provided between the lower end of the lower positioning sleeve (24) and the bottom of the receiving cavity (23).

5. The phase shifter assembly positioning mechanism according to claim 4, characterized in that: A sealing member is provided between the inner wall of the upper end of the lower positioning sleeve (24) and the outer wall of the lower positioning shaft (4), and between the outer wall and the inner wall of the accommodating chamber (23), so that a sealed chamber is formed in the accommodating chamber (23). An oil inlet joint (27) connected to the sealed chamber is connected to the outer wall of the lower fixing seat (21), and the outer end of the oil inlet joint (27) is connected to the hydraulic station.

6. The phase shifter assembly positioning mechanism according to claim 1, characterized in that: The upper positioning assembly also includes a top plate (9) centering sleeve and a top plate (9) pressing sleeve, the top plate (9) centering sleeve is axially slidable and sleeved on the outside of the upper positioning shaft (29), the top plate (9) pressing sleeve is axially slidable and sleeved on the outside of the top plate (9) centering sleeve, the outer wall of the upper positioning shaft (29) is provided with a first positioning boss (36) in a convex manner, the inner wall of the top plate (9) centering sleeve is provided with a second positioning boss (37) that matches the first positioning boss (36), the outer wall of the top plate (9) centering sleeve is provided with a concave manner, and the outer wall of the top plate (9) centering sleeve is provided with a second positioning boss (37) that matches the first positioning boss (36). A third positioning boss (38) is provided, a fourth positioning boss (39) matching with the third positioning boss (38) is provided at the lower end of the inner wall of the top plate (9) compression sleeve, a fifth positioning boss (40) is provided at the upper end of the inner wall of the top plate (9) compression sleeve, and a second elastic member (41) is provided between the fifth positioning boss (40) and the upper fixed seat (28); the lower end of the top plate (9) centering sleeve extends beyond the lower end surface of the top plate (9) compression sleeve to form a third core shaft (42) for guiding and centering the inner hole of the top plate (9).

7. The phase shifter assembly positioning mechanism according to claim 1, characterized in that: The lifting drive assembly includes a second lifting drive cylinder (43) connected to the lower end of the top plate (9) of the workbench (1), a positioning plate (44) is connected to the driving end of the lifting drive cylinder, and four guide columns (45) are connected to the positioning plate (44). The four guide columns (45) are slidably arranged on the top plate (9) of the workbench (1), and the upper fixed seat (28) is connected to the upper ends of the four guide columns (45).

8. The phase shifter assembly positioning mechanism according to claim 7, characterized in that: The lower end of the upper fixed seat (28) is also provided with at least two clamping blocks (46) located on the periphery of the upper positioning shaft (29) and a clamping drive cylinder (47) for driving each of the clamping blocks (46) to move horizontally to clamp the outer peripheral wall of the phaser.

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