An automatic balance measuring machine for an outer rotor fan

Abstract

The present invention discloses an automatic balancing machine for an external rotor fan, comprising: a frame; a pressing module for positioning the fan; a dynamic balancing test module for performing a dynamic balancing test on the fan; a weight removal module for milling and removing weight from the inner wall of the fan; and a transfer module for transporting the fan between the pressing module and the dynamic balancing test module. Compared with the prior art, the present invention solves the problem that the existing balancing machine for external rotor fans cannot accurately mill and remove weight.

Description

Technical Field

[0001] The present invention relates to the technical field of balancing machines, and particularly to an automatic balancing machine for external rotor fans. Background Art

[0002] During the operation of an external rotor fan, it needs to rotate at a high speed. In order to ensure the product quality of the external rotor fan, dynamic balance testing needs to be carried out after the external rotor fan is processed and before packaging, and milling and weight removal are performed according to the test results to ensure the rotational balance during the operation of the external rotor fan.

[0003] In the existing external rotor fan balancing machines, after the dynamic balance test of the fan, it is prone to angle and position deviation during the process of being transplanted to the milling station, resulting in inaccurate milling and weight removal subsequently. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic balancing machine for external rotor fans to solve the problem that the existing external rotor fan balancing machines cannot accurately mill and remove weights.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: An automatic balancing machine for external rotor fans, comprising:

[0006] A frame;

[0007] A pressing module for positioning the fan;

[0008] A dynamic balance testing module for performing dynamic balance testing on the fan;

[0009] A weight removal module for milling and removing weights from the inner wall of the fan;

[0010] A transfer module for transporting the fan between the pressing module and the dynamic balance testing module;

[0011] Among them, the transfer module includes a first bracket, a lifting seat, a servo motor, a rotating arm, and a suction cup. The first bracket is fixedly installed on the frame, the lifting seat is slidably connected to the first bracket, a first cylinder for driving the lifting seat is provided on the first bracket, the servo motor is fixedly installed on the lifting seat, the rotating arm is fixedly installed at the output end of the servo motor, and symmetrically arranged suction cups are provided at both ends of the rotating arm.

[0012] As a further description of the above technical solution:

[0013] A plurality of through holes are provided on the rotating arm.

[0014] As a further description of the above technical solution:

[0015] A buffer is further provided on the first bracket, and the position of the buffer corresponds to the lifting seat.

[0016] As a further description of the above technical solution:

[0017] The pressing module includes a second bracket, a positioning seat, a first gear, a second gear, a rotating motor, and a pressing unit. The positioning seat is rotatably installed on the second bracket. The first gear is fixedly installed on the positioning seat. The second gear meshes with the first gear. The second gear is fixedly installed at the output end of the rotating motor. The pressing unit is used to press the fan into the positioning seat.

[0018] As a further description of the above technical solution:

[0019] An optoelectronic sensor is provided on the second bracket, and a groove corresponding to the optoelectronic sensor in position is provided on the first gear.

[0020] As a further description of the above technical solution:

[0021] The pressing unit includes a fixed seat, a sliding seat, a downward pressing air cylinder, and a pressing block. The sliding seat is slidably connected to the fixed seat. The downward pressing air cylinder is fixedly installed on the sliding seat. The pressing block is fixedly installed on the piston rod of the downward pressing air cylinder.

[0022] As a further description of the above technical solution:

[0023] The weight removal module includes an X-axis mover, a Z-axis mover, a rotating seat, a milling cutter, and a floating seat. The X-axis mover is fixedly installed on the frame. The Z-axis mover is fixedly installed on the sliding seat of the X-axis mover. The rotating seat is fixedly installed on the sliding seat of the Z-axis mover. The milling cutter is rotatably installed on the rotating seat. The rotating shaft of the milling cutter is connected to a rotating driving member. The floating seat is elastically connected to the rotating seat. The milling cutter passes through the floating seat. An air blowing pipe is provided inside the floating seat, and an exhaust pipe is further provided on the side wall of the floating seat.

[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0025] 1. In the present invention, when the automatic balancing machine works, first place the fan at the dynamic balancing test module for dynamic balancing test. After the test, the transfer module moves the fan to the pressing module for downward pressing and positioning. Then, according to the test results, determine the position on the fan that needs to be milled and removed of weight. Furthermore, adjust the position of the fan through the pressing module. Then, the weight removal module mills the inner wall of the fan with the milling cutter.

[0026] 2. In the present invention, when the transfer module transports the fan, on the one hand, it simultaneously realizes the feeding of the fan to be milled and the discharging of the fan after milling and weight reduction, improving the feeding and discharging efficiency of the fan. On the other hand, when the transfer module transports the fan, the fan at the pressing module is centrosymmetric with the fan on the dynamic balance test module before transportation. The transfer process is simple and there will be no uncontrollable position deflection, facilitating the determination of the position of the fan to be milled at the pressing module according to the test results, facilitating subsequent precise milling and weight reduction, and improving the quality of the fan dynamic balance treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 is a three-dimensional view of an external rotor fan automatic dynamic balance machine Figure 1 .

[0029] Figure 2 is a three-dimensional view of an external rotor fan automatic dynamic balance machine Figure 2 .

[0030] Figure 3 is Figure 2 a partial enlarged view of part A in

[0031] Figure 4 is a schematic structural view of an external rotor fan automatic dynamic balance machine from a top view angle.

[0032] Figure 5 is a schematic structural view of the pressing module in an external rotor fan automatic dynamic balance machine.

[0033] Figure 6 is a schematic structural view of the weight reduction module in an external rotor fan automatic dynamic balance machine.

[0034] Figure 7 is Figure 6 a partial enlarged view of part B in

[0035] Legend Explanation:

[0036] 1. Frame; 2. Pressing module; 21. Second bracket; 22. Positioning seat; 23. First gear; 24. Second gear; 25. Rotating motor; 26. Pressing unit; 261. Fixed seat; 262. Sliding seat; 263. Downward pressing cylinder; 264. Pressing block; 27. Photoelectric sensor; 3. Dynamic balance testing module; 4. Weight removal module; 41. X-axis mover; 42. Z-axis mover; 43. Rotating seat; 44. Milling cutter; 45. Floating seat; 451. Blowing pipe; 452. Exhaust pipe; 5. Transfer module; 51. First bracket; 511. First cylinder; 52. Lifting seat; 53. Servo motor; 54. Rotating arm; 541. Through hole; 55. Suction cup; 56. Buffer; 9. Fan. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. The components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] Embodiment 1

[0040] Please refer to Figures 1-7 , the present invention provides a technical solution: an automatic balancing machine for an external rotor fan, comprising:

[0041] Frame 1;

[0042] Pressing module 2, which is used to position the fan 9;

[0043] Dynamic balance testing module 3, which is used to perform dynamic balance testing on the fan 9;

[0044] Weight removal module 4, which is used to mill and remove weights from the inner wall of the fan 9;

[0045] Transfer module 5, which is used to carry the fan 9 between the pressing module 2 and the dynamic balance testing module 3;

[0046] Among them, the transfer module 5 includes a first bracket 51, a lifting seat 52, a servo motor 53, a rotating arm 54 and a suction cup 55. The first bracket 51 is fixedly installed on the frame 1. The lifting seat 52 is slidably connected to the first bracket 51. A first cylinder 511 for driving the lifting seat 52 is provided on the first bracket 51. The servo motor 53 is fixedly installed on the lifting seat 52. The rotating arm 54 is fixedly installed at the output end of the servo motor 53. Symmetrically arranged suction cups 55 are provided at both ends of the rotating arm 54.

[0047] When the transfer module 5 transports the fan 9, on the one hand, it simultaneously realizes the loading of the fan 9 to be milled and the unloading of the fan 9 after milling and weight reduction, improving the loading and unloading efficiency of the fan 9. On the other hand, when the transfer module 5 transports the fan 9, the fan 9 at the pressing module 2 is centrosymmetric with the fan 9 on the dynamic balance test module 3 before transportation. The transfer process is simple and there will be no uncontrollable position deflection, which is convenient for determining the position to be milled of the fan 9 at the pressing module 2 according to the test results, facilitating subsequent precise milling and weight reduction, and improving the dynamic balance treatment quality of the fan 9.

[0048] The pressing module 2 includes a second bracket 21, a positioning seat 22, a first gear 23, a second gear 24, a rotating motor 25 and a pressing unit 26. The positioning seat 22 is rotatably installed on the second bracket 21. The first gear 23 is fixedly installed on the positioning seat 22. The second gear 24 meshes with the first gear 23. The second gear 24 is fixedly installed at the output end of the rotating motor 25. The pressing unit 26 is used to press the fan 9 into the positioning seat 22.

[0049] At the pressing module 2, the transfer module 5 places the fan 9 with the internal cavity facing down into the positioning seat 22. Then the pressing unit 26 presses the fan 9, and the rotating motor 25 drives the second gear 24 to rotate, driving the first gear 23 and the positioning seat 22 to rotate. According to the dynamic balance test results, the position to be milled of the fan 9 is rotated by a certain angle to be in a straight line (in the X-axis direction) with the milling cutter 44 below. During subsequent milling processing, the milling cutter 44 passes through the avoidance through hole on the positioning seat 22 and extends into the internal cavity of the fan 9, and the milling cutter moves in the X-axis direction and the Z-axis direction to precisely perform milling and weight reduction.

[0050] A photoelectric sensor 27 is provided on the second bracket 21, and a groove corresponding to the photoelectric sensor 27 in position is provided on the first gear 23. The groove on the first gear 23 cooperates with the photoelectric sensor 27 to mark the origin of the position of the positioning seat 22. After each milling of the fan 9 is completed, the positioning seat 22 has to rotate back to the initial position to confirm the angle to be rotated when milling the next fan 9.

[0051] The pressing unit 26 includes a fixed seat 261, a sliding seat 262, a downward pressing air cylinder 263 and a pressing block 264. The sliding seat 262 is slidably connected to the fixed seat 261. The downward pressing air cylinder 263 is fixedly installed on the sliding seat 262. The pressing block 264 is fixedly installed on the piston rod of the downward pressing air cylinder 263.

[0052] When the pressing unit 26 presses down the fan 9 in the positioning seat 22, the piston rod of the downward pressing air cylinder 263 extends downward and squeezes the fan 9 through the pressing block 264. The pressing block 264 and the piston rod rotate along with the rotation of the positioning seat 22 to maintain the pressing of the fan 9. When the transfer module 5 transports the fan 9, the piston rod of the downward pressing air cylinder 263 retracts upward, and the sliding seat 262 slides backward on the fixed seat 261 through the driving air cylinder to achieve avoidance.

[0053] The weight removal module 4 includes an X-axis mover 41, a Z-axis mover 42, a rotating seat 43, a milling cutter 44 and a floating seat 45. The X-axis mover 41 is fixedly installed on the frame 1. The Z-axis mover 42 is fixedly installed on the sliding seat of the X-axis mover 41. The rotating seat 43 is fixedly installed on the sliding seat of the Z-axis mover 42. The milling cutter 44 is rotatably installed on the rotating seat 43. The rotating shaft of the milling cutter 44 is connected to a rotation driving member. The floating seat 45 is elastically connected to the rotating seat 43. The milling cutter 44 passes through the floating seat 45. An air blowing pipe 451 is arranged in the floating seat 45, and an exhaust pipe 452 is further arranged on the side wall of the floating seat 45. The air blowing pipe 451 is connected to an air source, and the exhaust pipe 452 is connected to a negative pressure generating device.

[0054] During the milling process of the fan 9, the milling cutter 44 passes through the avoidance through hole on the positioning seat 22 and extends into the internal cavity of the fan 9. The milling cutter 44 moves in the X-axis direction and the Z-axis direction through the X-axis mover 41 and the Z-axis mover 42 to accurately perform milling for weight removal. Since the material being milled in the fan 9 is a magnetic substance, the fan 9 is cleaned by blowing air through the air blowing pipe 451 to remove the milled material, which is then sucked out through the exhaust pipe 452. The elastic connection of the floating seat 45 enables its upper end surface to fit the ground of the positioning seat 22, preventing the milling cutter 44 from detaching due to the up and down movement of the milling cutter 44, avoiding the leakage of milling waste, and at the same time ensuring the vacuum degree inside the floating seat 45, facilitating the suction of the milling waste inside the floating seat 45 through the exhaust pipe 452.

[0055] The rotation driving member can specifically adopt a synchronous belt mechanism, and the rotating shaft of the milling cutter 44 on the driven wheel is driven to rotate through the synchronous belt.

[0056] Working principle: When the automatic balance tester is working, first place the fan 9 at the dynamic balance test module 3 for dynamic balance testing. After the test, the transfer module 5 moves the fan 9 to the pressing module 2 to press and position it. Then, according to the test results, determine the position on the fan 9 that needs to be milled and removed for weight reduction. Furthermore, adjust the position of the fan 9 through the pressing module 2. After that, the weight removal module 4 mills the inner wall of the fan 9 with a milling cutter.

[0057] During the process of testing and milling for weight reduction of the fan 9, after the dynamic balance test of the fan 9 at the dynamic balance test module 3, the lifting seat 52 in the transfer module 5 descends and adsorbs the fan 9. The suction cups 55 at both ends of the rotating arm 54 respectively adsorb the fans 9 on the pressing module 2 and the dynamic balance test module 3. Then, the rotating arm 54 ascends with the lifting seat 52 and rotates 180 degrees through the servo motor 53, moving the tested fan 9 on the dynamic balance test module 3 to the pressing module 2, and moving the fan 9 after milling and weight reduction at the pressing module 2 to the dynamic balance test module 3 (for blanking or re - performing dynamic balance testing).

[0058] Embodiment 2

[0059] Based on the above - mentioned embodiment, the following further improved technical solutions are made in this embodiment: In the transfer module 5, a number of through - holes 541 are provided on the rotating arm 54 to reduce the self - weight of the rotating arm 54, reduce the inertia during rotation, and ensure the accurate position when the fan 9 is placed.

[0060] Embodiment 3

[0061] Based on the above - mentioned embodiment, the following further improved technical solutions are made in this embodiment: A buffer 56 is further provided on the first support 51, and the position of the buffer 56 corresponds to the lifting seat 52.

[0062] During the up - and - down movement of the position of the lifting seat 52, the buffer 56 absorbs the impact when the lifting seat 52 moves upward to the limit position, preventing the fan 9 from detaching from the suction cup 55 or having a position offset, and ensuring the accuracy of subsequent milling and weight reduction.

[0063] The above - mentioned are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An automatic balancing machine for an outer rotor fan, characterized in that: include: frame; A clamping module, which is used to position the fan; A dynamic balancing test module, used for performing a dynamic balancing test on the fan; A deweighting module, used for performing milling to deweight the inner wall of the fan; A transfer module, used for transferring the fan between the pressing module and the dynamic balancing test module; The transfer module comprises a first bracket, a lifting seat, a servo motor, a rotating arm and a suction cup, wherein the first bracket is fixedly mounted on the frame, the lifting seat is slidably connected to the first bracket, the first bracket is provided with a first cylinder for driving the lifting seat, the servo motor is fixedly mounted on the lifting seat, the rotating arm is fixedly mounted on the output end of the servo motor, and the suction cups are symmetrically arranged at both ends of the rotating arm; The clamping module comprises a second bracket, a positioning seat, a first gear, a second gear, a rotating motor and a clamping unit, wherein the positioning seat is rotatably mounted on the second bracket, the first gear is fixedly mounted on the positioning seat, the second gear is meshed with the first gear, the second gear is fixedly mounted on the output end of the rotating motor, and the clamping unit is used to press the fan into the positioning seat; The second bracket is provided with a photoelectric sensor, and the first gear is provided with a groove corresponding to the position of the photoelectric sensor, the groove cooperates with the photoelectric sensor to mark the origin position of the positioning seat; The first bracket is also provided with a buffer, and the position of the buffer corresponds to the lifting seat; The deweighting module includes an X-axis mover, a Z-axis mover, a rotating seat, a milling cutter and a floating seat, the X-axis mover is fixedly mounted on the frame, the Z-axis mover is fixedly mounted on the sliding seat of the X-axis mover, the rotating seat is fixedly mounted on the sliding seat of the Z-axis mover, the milling cutter is rotatably mounted on the rotating seat, the rotating shaft of the milling cutter is connected to the rotating drive member, the floating seat is elastically connected to the rotating seat, the milling cutter is inserted through the floating seat, an air blowing pipe is arranged in the floating seat, and an exhaust pipe is also arranged on the side wall of the floating seat.

2. The automatic balancing machine for an outer rotor fan according to claim 1, characterized in that: The rotating arm is provided with a plurality of through holes.

3. The automatic balancing machine for an outer rotor fan according to claim 1, characterized in that: The pressing unit comprises a fixed seat, a sliding seat, a pressing cylinder and a pressing block, the sliding seat is slidably connected to the fixed seat, the pressing cylinder is fixedly mounted on the sliding seat, and the pressing block is fixedly mounted on the piston rod of the pressing cylinder.

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