Motor assembly machine

Abstract

The present invention relates to the field of motor manufacturing technology, specifically a motor assembly machine. It includes a frame, an upper turntable, a hole alignment mechanism, a plurality of fixed tubes, a plurality of stator clamping mechanisms and a plurality of shaft clamping mechanisms; a support ring is provided on the frame, and a lower turntable is rotatably mounted on the support ring; a plurality of fixed tubes are rotatably mounted on the lower turntable along a circular array; a plurality of stator clamping mechanisms are respectively mounted on a plurality of fixed tubes, and a connecting shaft is connected between the upper turntable and the lower turntable; a plurality of shaft clamping mechanisms are mounted on the upper turntable along a circular array; the hole alignment mechanism includes a first infrared ranging sensor mounted on the frame, a second infrared ranging sensor and two sets of rotating drive mechanisms symmetrically mounted on the upper and lower ends of the frame. The present invention has the functions of high assembly efficiency and automatic hole alignment, which significantly improves the working efficiency of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of motor manufacturing, and in particular to a motor assembling machine. Background Art

[0002] An electric motor is a device that converts electrical energy into mechanical energy. The motor includes a rotor part and a casing. It uses an energized coil, that is, a stator winding, to generate a rotating magnetic field and act on the rotor, such as a squirrel-cage closed aluminum frame, to form a magneto-electrical rotational torque. During the manufacturing process, the rotor and stator of the motor need to be assembled together. In the existing motor assembly, the rotor is inserted into the central rotor positioning cavity of the stator and then pressed into place.

[0003] In the prior art, when assembling a motor, it is necessary to align the bolt holes on the end cover (the rotor is installed on the end cover) with the bolt holes on the stator housing, and the existing assembly equipment performs loading, hole alignment, assembly and unloading at one station. It is easy for multiple processes to affect and interfere with each other. When faced with the assembly of large quantities of motors, the assembly efficiency needs to be improved. Summary of the invention

[0004] The purpose of the present invention is to provide a motor assembly machine in view of the problems existing in the background technology.

[0005] The technical solution of the present invention is a motor assembly machine, comprising:

[0006] A frame, a support ring is arranged on the frame, a lower turntable is rotatably mounted on the support ring, and a power assembly for driving the lower turntable to rotate is installed on the frame;

[0007] A plurality of fixed tubes, wherein the plurality of fixed tubes are rotatably mounted on the lower turntable along a circular array;

[0008] A plurality of stator clamping mechanisms, wherein the plurality of stator clamping mechanisms are respectively mounted on the plurality of fixing tubes;

[0009] An upper turntable, which is arranged directly above the lower turntable, and a connecting shaft is connected between the upper turntable and the lower turntable;

[0010] A plurality of shaft clamping mechanisms, wherein the plurality of shaft clamping mechanisms are mounted on the upper turntable along a circular array;

[0011] A pressing mechanism for driving the shaft clamping mechanism to move;

[0012] The hole alignment mechanism comprises a first infrared distance measuring sensor and a second infrared distance measuring sensor installed on the frame, and two sets of rotating drive mechanisms symmetrically installed at the upper and lower ends of the frame;

[0013] Belt conveyor: The belt conveyor is arranged on one side below the turntable;

[0014] And two sets of supporting mechanisms at the bottom of the mounting rack.

[0015] Preferably, the stator clamping mechanism includes a horn cover, a connecting rod, a limiting slide, a first circular ring and multiple groups of clamping assemblies; the multiple groups of clamping assemblies are installed on the fixed tube along a circular array, and the clamping assembly includes a guide rod movably penetrating the side wall of the fixed tube, a clamping plate and a hemispherical block connected to the inner and outer ends of the guide rod, and a second spring sleeved on the guide rod; the horn cover is slidably arranged on the outside of the fixed tube, the horn cover is located below the lower turntable, and the large mouth of the horn cover faces downward; the first circular ring is sleeved on the fixed tube and located above the horn cover, the connecting rod is connected to the first circular ring, the limiting slide is connected to the lower turntable, and the connecting rod is vertically slidably installed on the limiting slide; a guide rail is connected to the frame, the guide rail is located below the lower turntable, the guide rail is an open circular ring structure, and one end of the guide rail has an upwardly tilted structure.

[0016] Preferably, the power assembly includes a third servo motor, a second gear and a gear ring, wherein the third servo motor is mounted on the frame, the second gear is mounted on the output shaft of the third servo motor, the gear ring is mounted on the outer periphery of the lower turntable, and the gear ring is meshed with the second gear.

[0017] Preferably, an angle sensor is installed on the upper end of the connecting shaft.

[0018] Preferably, the rotation drive mechanism includes a first servo motor, a second servo motor, a mounting seat, two clamping frames and two first gears, wherein the mounting seat is rotatably mounted on the frame, the second servo motor is mounted on the frame and its output shaft is connected to the rotating shaft of the mounting seat, the two clamping frames are symmetrically rotatably mounted on the mounting seat, the first servo motor is mounted on the mounting seat and its output shaft is connected to the rotating shaft of any clamping frame, the two first gears are respectively mounted on the rotating shafts of the two clamping frames, and the two first gears are meshingly connected.

[0019] Preferably, the supporting mechanism includes a mounting frame arranged on the frame and a plurality of rollers rotatably mounted on the inner side of the mounting frame, and the rollers are arranged along the radial direction of the lower turntable.

[0020] Preferably, the shaft clamping mechanism includes a rotating cylinder, a movable frame, a sliding rod, a first spring and an electric three-jaw chuck. The rotating cylinder is rotatably mounted on the upper turntable. The movable frame is slidably connected to the rotating cylinder along the length direction of the rotating cylinder. The main body of the sliding rod is arranged on the inner side of the rotating cylinder and is connected to the movable frame. The lower end of the sliding rod movably passes through the upper turntable and is connected to the electric three-jaw chuck. The first spring is sleeved and mounted on the sliding rod.

[0021] Preferably, the pressing mechanism includes a hydraulic cylinder mounted on the frame, a connecting frame connected to the output shaft of the hydraulic cylinder, and a second ring connected to the end of the connecting frame.

[0022] Preferably, a positioning column is vertically connected to the connecting frame, a pointed head is provided at the bottom of the positioning column, a plurality of positioning holes are opened on the upper turntable, the plurality of positioning holes are arranged in one-to-one correspondence with the plurality of stator clamping mechanisms and the plurality of shaft clamping mechanisms, and the positioning holes are clearance-matched with the positioning column.

[0023] Preferably, the outer circumference of the belt of the belt conveyor is wrapped with sponge.

[0024] Compared with the prior art, the present invention has the following beneficial technical effects: in the technical scheme, there are at least four workstations of material discharge, hole alignment, assembly and unloading, and their work does not affect each other, but works in coordination, and can synchronously complete the functions of material discharge, hole alignment, assembly and unloading, and the whole work rhythm is compact and the work efficiency is high; and the hole alignment mechanism set up can complete the automatic hole alignment work, and the degree of automation is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1-Figure 3 All of them are structural schematic diagrams of the present invention.

[0026] Figure 4 It is a structural schematic diagram of the stator clamping mechanism in the present invention.

[0027] Figure 5 It is a cross-sectional structural diagram of the rotating cylinder in the present invention.

[0028] Figure 6 It is a structural schematic diagram of the support mechanism in the present invention.

[0029] Figure 7 for Figure 1 Schematic diagram of the local enlarged structure at A.

[0030] Figure 8 for Figure 1 Schematic diagram of the local enlarged structure at point B.

[0031] Reference numerals: 1, frame; 2, support ring; 3, lower turntable; 4, upper turntable; 401, positioning hole; 5, guide rail; 6, PLC controller; 7, fixed pipe; 8, belt conveyor; 9, mounting frame; 10, roller; 11, rotating cylinder; 12, movable frame; 13, slide bar; 14, first spring; 15, electric three-jaw chuck; 16, horn cover; 17, connecting rod; 18, limit slide plate; 19, clamping plate; 20, guide rod; 21, second spring; 22, Hemispherical block; 23, first circular ring; 24, hydraulic cylinder; 25, connecting frame; 26, positioning column; 27, second circular ring; 28, first servo motor; 29, second servo motor; 30, mounting seat; 31, clamping frame; 32, first gear; 331, third servo motor; 332, second gear; 333, gear ring; 34, connecting shaft; 35, angle sensor; 36, mounting rod; 371, first infrared ranging sensor; 372, second infrared ranging sensor. DETAILED DESCRIPTION

[0032] Embodiment 1

[0033] like Figure 1-Figure 8 As shown, a motor assembly machine proposed in this embodiment includes a frame 1, an upper turntable 4, a belt conveyor 8, a hole alignment mechanism, a downward pressing mechanism, two sets of supporting mechanisms, a plurality of fixing tubes 7, a plurality of stator clamping mechanisms and a plurality of shaft clamping mechanisms.

[0034] A support ring 2 is provided on the frame 1, and a lower turntable 3 is rotatably mounted on the support ring 2. A power assembly for driving the lower turntable 3 to rotate is installed on the frame 1, and the power assembly includes a third servo motor 331, a second gear 332 and a gear ring 333, wherein the third servo motor 331 is installed on the frame 1, the second gear 332 is installed on the output shaft of the third servo motor 331, and the gear ring 333 is installed on the outer periphery of the lower turntable 3, and the gear ring 333 is meshed with the second gear 332.

[0035] An angle sensor 35 is installed at the upper end of the connecting shaft 34. The angle sensor 35 is used to detect the rotation angles of the lower turntable 3 and the upper turntable 4, so as to achieve accurate positioning of the lower turntable 3 and the upper turntable 4. The angle sensor 35 is connected to the PLC controller 6 signal.

[0036] A plurality of fixed tubes 7 are rotatably mounted on the lower turntable 3 along an annular array; a plurality of stator clamping mechanisms are respectively mounted on the plurality of fixed tubes 7, the stator clamping mechanisms comprising a horn cover 16, a connecting rod 17, a limiting slide plate 18, a first circular ring 23 and a plurality of clamping components; a plurality of clamping components are mounted on the fixed tube 7 along an annular array, the clamping components comprising a guide rod 20 movably penetrating the side wall of the fixed tube 7, a clamping plate 19 and a hemispherical block 22 connected to the inner and outer ends of the guide rod 20, and a second spring 21 sleeved on the guide rod 20; the horn cover 16 is slidably arranged on the outer side of the fixed tube 7, the horn cover 16 is located below the lower turntable 3, and the large mouth of the horn cover 16 faces downward; the first circular ring 23 is sleeved on the fixed tube 7 and is located above the horn cover 16, the connecting rod 17 is connected to the first circular ring 23, and the limiting slide plate 18 is connected to the lower turntable 3 , the connecting rod 17 is vertically slidably installed on the limiting slide plate 18; a guide rail 5 is connected to the frame 1, and the guide rail 5 is located below the lower turntable 3. The guide rail 5 is an open circular ring structure, and one end of the guide rail 5 has an upwardly tilted structure; it should be supplemented that a ball is installed at the outer end of the connecting rod 17. After the ball rolls on the guide rail 5, the friction on the connecting rod 17 can be reduced. After the end of the connecting rod 17 contacts the tilted part of the guide rail 5, the connecting rod 17 is forced to move downward gradually. When the connecting rod 17 moves to the plane area position of the guide rail 5, the connecting rod 17 moves downward to the limited position. The movement of the connecting rod 17 drives the first circular ring 23 to move. The movement of the first circular ring 23 pushes the horn cover 16 to move downward. At the same time, multiple guide rods 20 move inward synchronously, so that the stator can be clamped.

[0037] The upper turntable 4 is arranged directly above the lower turntable 3, and a connecting shaft 34 is connected between the upper turntable 4 and the lower turntable 3; a plurality of shaft clamping mechanisms are installed on the upper turntable 4 along a circular array, and the shaft clamping mechanisms include a rotating cylinder 11, a movable frame 12, a slide bar 13, a first spring 14 and an electric three-jaw chuck 15. The rotating cylinder 11 is rotatably installed on the upper turntable 4, and the movable frame 12 is slidably connected to the rotating cylinder 11 along the length direction of the rotating cylinder 11. The main body of the slide bar 13 is arranged on the inner side of the rotating cylinder 11 and is connected to the movable frame 12. The lower end of the slide bar 13 movably passes through the upper turntable 4 and is connected to the electric three-jaw chuck 15, and the first spring 14 is sleeved and installed on the slide bar 13.

[0038] The pressing mechanism is used to drive the shaft clamping mechanism to move. The pressing mechanism includes a hydraulic cylinder 24 installed on the frame 1, a connecting frame 25 connected to the output shaft of the hydraulic cylinder 24, and a second ring 27 connected to the end of the connecting frame 25. The hydraulic cylinder 24 works to drive the second ring 27 to move downward, and the second ring 27 pushes the movable frame 12 to move downward, which drives the slide rod 13, the electric three-jaw chuck 15 and the rotor to move.

[0039] The hole alignment mechanism includes a first infrared distance measuring sensor 371 and a second infrared distance measuring sensor 372 mounted on the frame 1, and two sets of rotation drive mechanisms symmetrically mounted on the upper and lower ends of the frame 1. The rotation drive mechanism includes a first servo motor 28, a second servo motor 29, a mounting seat 30, two clamping frames 31 and two first gears 32, wherein the mounting seat 30 is rotatably mounted on the frame 1, the second servo motor 29 is mounted on the frame 1 and its output shaft is connected to the rotating shaft of the mounting seat 30, the two clamping frames 31 are symmetrically rotatably mounted on the mounting seat 30, the first servo motor 28 is mounted on the mounting seat 30 and its output shaft is connected to the rotating shaft of any clamping frame 31, and the two first gears 32 are respectively mounted on On the rotating shafts of the two clamping frames 31, two first gears 32 are meshed and connected. Starting the first servo motor 28 can drive the two first gears 32 to rotate in opposite directions. The two first gears 32 respectively drive the clamping frames 31 on both sides to rotate, thereby realizing the clamping and loosening operations of the rotating cylinder 11. The second servo motor 29 can drive the mounting seat 30 to rotate when working, and then the rotation angle of the rotating cylinder 11 can be adjusted. The rotation of the rotating cylinder 11 drives the rotor to rotate, so as to facilitate the positioning of the bolt holes on the end cover connected to the rotor. It should be added that the first infrared ranging sensor 371 and the second infrared ranging sensor 372 are connected to the frame 1 through the mounting rod 36.

[0040] The belt conveyor 8 is arranged at a side position below the turntable 3; the outer periphery of the belt of the belt conveyor 8 is wrapped with sponge, and the sponge can play a buffering role to avoid damage to the motor during the unloading process.

[0041] Both sets of support mechanisms are arranged at the bottom of the mounting frame 1. The support mechanism includes a mounting frame 9 arranged on the frame 1 and a plurality of rollers 10 rotatably mounted inside the mounting frame 9. The rollers 10 are arranged along the radial direction of the lower turntable 3. The two sets of support mechanisms are respectively arranged at the unloading station and the assembling station, and the purpose is to support the stator housing, and the rotatably mounted rollers 10 can reduce the friction generated by the stator during movement.

[0042] Specifically, in the present technical solution, at least four groups of stator clamping mechanisms are provided, forming a unloading station on the side adjacent to the belt conveyor 8, an assembly station on the side of the pressing mechanism, a hole alignment station on the side of the hole alignment mechanism, and a discharge station on the remaining side.

[0043] During operation, the rotor shaft is installed on the motor end cover. First, the outer shell with the stator is placed on the inner side of the fixed tube 7 of the discharge station. It should be added that the two sets of support mechanisms are respectively located below the discharge station and the hole alignment station, which are used to limit the support of the stator. Then the rotor shaft is placed on the inner side of the electric three-jaw chuck 15, and the corresponding electric three-jaw chuck 15 is controlled to start working to achieve the fixing of the rotor shaft. The lower turntable 3 and the upper turntable 4 are driven to rotate intermittently through the set power assembly. During the rotation process, the end of the connecting rod 17 contacts the raised part of the guide rail 5, forcing the connecting rod 17 to gradually move downward. When the connecting rod 17 moves to the plane area position of the guide rail 5, the connecting rod 17 moves downward to the limited position. The movement of the connecting rod 17 drives the first ring 23 to move, and the movement of the first ring 23 pushes the horn cover 16 to move downward. At the same time, multiple guide rods 20 move inward synchronously, so that the stator can be clamped.

[0044] When the stator and rotor move to the hole alignment station, the power assembly stops driving. At this time, the second infrared ranging sensor 372 is located above the edge of the end cover connected to the rotor. The upper end of the rotating cylinder 11 is clamped and the rotating cylinder 11 is driven to rotate through the provided rotation drive mechanism. The rotation of the rotating cylinder 11 drives the rotor to rotate. When the bolt hole on the end cover installed with the rotor is placed directly below the second infrared ranging sensor 372, the detection data of the second infrared ranging sensor 372 changes. Furthermore, a PLC controller 6 is installed on the frame 1. The second infrared ranging sensor 372 feeds back the detected signal to the PLC controller 6, and the PLC controller 6 controls the upper rotation drive mechanism to stop driving. The following method for aligning the bolt holes on the stator casing is the same as mentioned above, so it will not be repeated. Through the above operation, the alignment of the end cover bolt holes with the stator casing bolt holes is achieved.

[0045] The lower turntable 3 is driven to rotate continuously. When the stator and the rotor are moved to the assembly position, the hydraulic cylinder 24 drives the second ring 27 to move downward. The movement of the second ring 27 drives the movable frame 12, the slide rod 13 and the electric three-jaw chuck 15 to move, so that the rotor is installed in the stator housing. Then, the fixing work on the rotor shaft is released. After the second ring 27 is driven to reset, and under the elastic force of the first spring 14, the electric three-jaw chuck 15 is driven to reset.

[0046] When the assembled motor moves to the unloading station, the connecting rod 17 is separated from the guide rail 5, and the multiple clamping plates 19 are driven to reset under the elastic force of the second spring 21. At this time, the positioning work of the motor is released, and then the motor falls onto the belt conveyor 8 and is transported to the next station.

[0047] Embodiment 2

[0048] like Figure 1 As shown, a motor assembly machine proposed in this embodiment, compared with the first embodiment, in this embodiment, a positioning column 26 is vertically connected to the connecting frame 25, and a pointed head is arranged at the bottom of the positioning column 26, and a plurality of positioning holes 401 are opened on the upper turntable 4, and the plurality of positioning holes 401 are arranged one by one corresponding to the plurality of stator clamping mechanisms and the plurality of shaft clamping mechanisms, and the positioning holes 401 are clearance-matched with the positioning columns 26. In the process of the hydraulic cylinder 24 driving the connecting frame 25 to move downward, the pointed head at the bottom of the positioning column 26 will first be inserted into the corresponding positioning hole 401. When the positioning column 26 is fully inserted into the inner side of the positioning hole 401, the precise positioning of the upper turntable 4 and the positioning column 26 is completed, so as to correct the slight position deviation of the lower turntable 3 and the upper turntable 4 during the rotation process.

[0049] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A motor assembly machine, characterized in that: include: A frame (1), a support ring (2) is arranged on the frame (1), a lower turntable (3) is rotatably mounted on the support ring (2), and a power assembly for driving the lower turntable (3) to rotate is mounted on the frame (1); A plurality of fixed tubes (7), wherein the plurality of fixed tubes (7) are rotatably mounted on the lower rotating disk (3) along a circular array; A plurality of stator clamping mechanisms, wherein the plurality of stator clamping mechanisms are respectively mounted on a plurality of fixing tubes (7); An upper turntable (4), the upper turntable (4) is arranged directly above the lower turntable (3), and a connecting shaft (34) is connected between the upper turntable (4) and the lower turntable (3); A plurality of shaft clamping mechanisms, wherein the plurality of shaft clamping mechanisms are mounted on the upper turntable (4) along a circular array; A pressing mechanism for driving the shaft clamping mechanism to move; A hole alignment mechanism, the hole alignment mechanism comprising a first infrared distance measuring sensor (371) mounted on the frame (1), a second infrared distance measuring sensor (372), and two sets of rotation drive mechanisms symmetrically mounted at the upper and lower ends of the frame (1); A belt conveyor (8), wherein the belt conveyor (8) is arranged at a side position below the turntable (3); And two sets of supporting mechanisms are installed at the bottom of the frame (1).

2. A motor assembly machine according to claim 1, characterized in that: The stator clamping mechanism comprises a horn cover (16), a connecting rod (17), a limiting slide plate (18), a first ring (23) and a plurality of clamping components; the plurality of clamping components are installed on a fixed tube (7) along a circular array, the clamping components comprising a guide rod (20) movably penetrating a side wall of the fixed tube (7), a clamping plate (19) and a hemispherical block (22) connected to the inner and outer ends of the guide rod (20), and a second spring (21) sleeved on the guide rod (20); the horn cover (16) is slidably arranged on the outer side of the fixed tube (7), and the horn cover (16) is located The frame (1) is provided with a guide rail (5), the guide rail (5) is located below the lower turntable (3), and the large opening of the speaker cover (16) faces downward; the first circular ring (23) is sleeved on the fixed tube (7) and is located above the speaker cover (16); the connecting rod (17) is connected to the first circular ring (23); the limiting slide plate (18) is connected to the lower turntable (3); the connecting rod (17) is vertically slidably mounted on the limiting slide plate (18); the frame (1) is connected with a guide rail (5), the guide rail (5) is located below the lower turntable (3), the guide rail (5) is an open circular ring structure, and one end of the guide rail (5) has an upwardly tilted structure.

3. The motor assembly machine according to claim 1, characterized in that: The power assembly comprises a third servo motor (331), a second gear (332) and a gear ring (333), wherein the third servo motor (331) is mounted on the frame (1), the second gear (332) is mounted on the output shaft of the third servo motor (331), the gear ring (333) is mounted on the outer periphery of the lower turntable (3), and the gear ring (333) is meshed with the second gear (332).

4. The motor assembly machine according to claim 3, characterized in that: An angle sensor (35) is installed on the upper end of the connecting shaft (34).

5. The motor assembly machine according to claim 1, characterized in that: The rotary drive mechanism comprises a first servo motor (28), a second servo motor (29), a mounting seat (30), two clamping frames (31) and two first gears (32), wherein the mounting seat (30) is rotatably mounted on the frame (1), the second servo motor (29) is mounted on the frame (1) and its output shaft is connected to the rotating shaft of the mounting seat (30), the two clamping frames (31) are symmetrically rotatably mounted on the mounting seat (30), the first servo motor (28) is mounted on the mounting seat (30) and its output shaft is connected to the rotating shaft of any clamping frame (31), and the two first gears (32) are respectively mounted on the rotating shafts of the two clamping frames (31), and the two first gears (32) are meshedly connected.

6. The motor assembly machine according to claim 1, characterized in that: The supporting mechanism comprises a mounting frame (9) arranged on a frame (1) and a plurality of rollers (10) rotatably mounted on the inner side of the mounting frame (9), wherein the rollers (10) are arranged along the radial direction of the lower turntable (3).

7. The motor assembly machine according to claim 1, characterized in that: The shaft clamping mechanism comprises a rotating cylinder (11), a movable frame (12), a sliding rod (13), a first spring (14) and an electric three-jaw chuck (15); the rotating cylinder (11) is rotatably mounted on an upper turntable (4); the movable frame (12) is slidably connected to the rotating cylinder (11) along the length direction of the rotating cylinder (11); the main body of the sliding rod (13) is arranged on the inner side of the rotating cylinder (11) and is connected to the movable frame (12); the lower end of the sliding rod (13) movably passes through the upper turntable (4) and is connected to the electric three-jaw chuck (15); and the first spring (14) is sleeved and mounted on the sliding rod (13).

8. The motor assembly machine according to claim 7, characterized in that: The pressing mechanism comprises a hydraulic cylinder (24) mounted on a frame (1), a connecting frame (25) connected to an output shaft of the hydraulic cylinder (24), and a second ring (27) connected to an end of the connecting frame (25).

9. The motor assembly machine according to claim 8, characterized in that: A positioning column (26) is vertically connected to the connecting frame (25), and a pointed head is arranged at the bottom of the positioning column (26). A plurality of positioning holes (401) are opened on the upper turntable (4), and the plurality of positioning holes (401) are arranged in one-to-one correspondence with the plurality of stator clamping mechanisms and the plurality of shaft clamping mechanisms, and the positioning holes (401) and the positioning column (26) are clearance-matched.

10. The motor assembly machine according to claim 1, characterized in that: The outer periphery of the belt of the belt conveyor (8) is wrapped with sponge.

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