Automatic frequency conversion rotor assembly line and assembly process

Abstract

The assembly line comprises a lower end cover automatic mounting mechanism, an automatic magnetic steel inserting mechanism and an upper end cover automatic mounting mechanism which are sequentially arranged in the moving direction of a tool plate. And an automatic iron core mounting mechanism. The lower end cover automatic mounting mechanism is used for mounting the lower end cover into the tool plate; the automatic magnetic steel inserting mechanism is used for pressing the magnetic steel into the iron core on the tool plate and comprises an automatic magnetic steel feeding device, a servo pushing device, a magnetic steel feeding device, a servo propelling device and a magnetic steel pressing-in device which are sequentially connected according to an assembly process; the magnetic steel automatic feeding device is used for conveying a row of magnetic steel to the servo pushing device; the servo pushing device is used for feeding the magnetic steel into the magnetic steel feeding device; the servo propelling device is used for feeding the magnetic steel in the magnetic steel feeding device into the magnetic steel pressing-in device; and the magnetic steel press-in device is used for receiving three pieces of magnetic steel required by the iron core and pressing the three pieces of magnetic steel into the mounting grooves in the iron core. Automatic installation of the iron core, the upper end cover and the lower end cover is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic assembly equipment, and in particular relates to a variable frequency rotor automatic assembly line and an assembly process. Background Art

[0002] In the existing frequency conversion rotor assembly process, most of the assembly operations are performed manually or semi-automatically. However, these traditional assembly methods have problems such as low production efficiency, unstable assembly quality, high labor intensity and high labor costs.

[0003] With the continuous development of industrial production and the increasing market requirements for product quality and production efficiency, the development of an efficient, stable and fully automated variable frequency rotor assembly line and equipment has become an urgent need in the industry. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic assembly line and assembly process for variable frequency rotors, which can realize the automatic installation of the iron core, the upper end cover and the lower end cover. The technical solution adopted is as follows:

[0005] A variable frequency rotor automatic assembly line, comprising:

[0006] The lower end cover automatic installation mechanism 20, the automatic magnetic steel insertion mechanism 40, and the upper end cover automatic installation mechanism 50 are sequentially arranged along the moving direction of the tooling plate;

[0007] and an automatic core installation mechanism 30, which is disposed between the automatic lower end cover installation mechanism 20 and the automatic magnetic steel insertion mechanism 40, and is located on one side of the automatic lower end cover installation mechanism 20;

[0008] The lower end cover automatic installation mechanism 20 is used to install the lower end cover into the tooling plate;

[0009] The automatic magnet insertion mechanism 40 is used to press the magnet into the core on the tooling plate, and includes: a magnet automatic feeding device 402, a servo pushing device 403, a magnet feeding device 404, a servo pushing device 405 and a magnet pressing device 406, which are connected in sequence according to the assembly process;

[0010] The magnetic steel automatic feeding device 402 is used to transfer a row of magnetic steel to the servo pushing device 403;

[0011] The servo pusher 403 is used to feed the magnetic steel into the magnetic steel feeding device 404;

[0012] The servo propulsion device 405 is used to feed the magnetic steel in the magnetic steel feeding device 404 into the magnetic steel pressing device 406;

[0013] The magnetic steel pressing device 406 is used to receive the three magnetic steels required by the iron core and press them into the installation grooves on the iron core.

[0014] Preferably, the magnetic steel automatic feeding device 402 comprises:

[0015] A feeding frame 4021 is provided with a belt transmission mechanism 4024, and the belt transmission mechanism 4024 drives the conveyor belt 4022 to operate;

[0016] The driving motor 4023 is used to drive the active pulley in the belt transmission mechanism 4024.

[0017] Preferably, the servo pushing device 403 comprises:

[0018] A linear module 4031 is connected to a loading rack 4021 via a connector 1;

[0019] A servo motor 4032 is used to drive a linear module 4031, which is installed on a connector 1;

[0020] The push block 4034 is used to push a row of magnets on the conveyor belt 4022 into the magnet guide groove 4041 in the magnet feeding device 404 and is connected to the output end of the linear module 4031.

[0021] Preferably, the magnetic steel feeding device 404 is installed on the frame assembly 401, and includes:

[0022] A magnetic steel guide groove 4041 is provided in the feeding device body and extends along the pushing direction of the push block 1 4034;

[0023] A row of magnetic steels 4042 are sequentially arranged in the magnetic steel guide grooves 4041;

[0024] The steel ball groove 4044 is fixedly arranged on the feeding device body, and a plurality of springs arranged along the magnetic steel guide groove 4041 are installed therein, the ends of the springs are connected to the steel balls, and the steel column is located between two adjacent magnetic steels;

[0025] The shift fork 4043 has one end thereof facing the magnetic steel guide groove 4041 and is rotatably disposed on the feeding device body, and the other end thereof is connected to the linear motion mechanism.

[0026] Preferably, the servo propulsion device 405 comprises:

[0027] The second linear module 4051 is connected to the loading frame 4021 through the movable bottom plate 4054;

[0028] Servo motor 2 4052, used to drive linear module 2 4051;

[0029] The second push block 4055 is engaged with the front surface of the magnetic steel to feed the magnetic steel into the material guide upper mold 4064 in the magnetic steel pressing device 406;

[0030] The servo cylinder 4053 is used to drive the push block 4055 to rise and fall. The servo cylinder 4053 is connected to the output end of the linear module 4051 through a connecting plate. The output end of the servo cylinder 4053 is connected to the push block 4055.

[0031] Preferably, the magnetic steel pressing device 406 comprises:

[0032] The cylinder 4061 can move up and down, and its output end is connected to the pressure rod connecting seat 4062 through a connecting member;

[0033] The pressure rod 4063 has an upper end connected to the pressure rod connecting seat 4062 and a lower end connected to the pressure die. The pressure die can pass through the material guide upper die 4064 and abut against the magnetic steel attached to the upper section of the material guide upper die 4064.

[0034] The material guide upper mold 4064 is used to receive the magnetic steel, which is installed on the base plate through a bearing. The base plate is fixedly arranged. The upper section of the material guide upper mold 4064 forms an inwardly concave magnetic steel groove, and the convex surface of the magnetic steel fits the magnetic steel groove;

[0035] The lower end of the material guiding upper die 4064 is connected to the material guiding lower die 4065, and the lower end thereof is connected to the belt transmission component to realize rotation.

[0036] The material guiding lower die 4065 has a material guiding gap on its inner circumference for the magnetic steel and the die to pass through.

[0037] Preferably, the lower end cover automatic installation mechanism 20 comprises:

[0038] A frame 201, on which a servo transfer robot 203 and a lifting and discharging device 205 are arranged;

[0039] A material changing turntable 206 is used to rotate the lower end cover material box 204 to above the output end of the lifting and discharging device 205, and is connected to the frame 201 through a rotating motor, and the rotating motor is arranged on the frame 201;

[0040] A pair of lower end cover material boxes 204 are provided on the material changing turntable 1 206;

[0041] The lower end cover material box 204 is a hollow structure with an open upper end face and a lower end face, and is used to receive the lower end cover, and a receiving plate for receiving the lower end cover is placed on the lower end face;

[0042] A servo transfer robot 203 is used to move the lower end cover in the lower end cover material box 204 to the tooling plate, which is located above the lower end cover material box 204;

[0043] The vacuum suction cup 202 is used for sucking the lower end cover and is arranged at the output end of the servo transfer robot 203 .

[0044] Preferably, the tooling plate comprises:

[0045] A bottom plate 102, on which a tooling base 103 is disposed, and a rotor positioning seat 104 is connected to the tooling base 103 via fasteners;

[0046] The ejector pin 105 is used to position the upper end cover, the core, and the lower end cover. The ejector pin 105 is located in the tooling base 103. The upper end of the ejector pin 105 can pass through the upper end surface of the rotor positioning seat 104, and the lower end of the ejector pin 105 passes through the tooling base 103 and is located above the bottom plate 102. Before lifting, the ejector pin 105 is placed on the lifting cylinder on the bottom plate 102.

[0047] The clamping plate 106 is used to limit the position of the ejector pin 105 after being lifted, and is clamped on the tooling base 103 through a rubber ring.

[0048] A variable frequency rotor automatic assembly process, based on the variable frequency rotor automatic assembly, includes the steps of inserting magnetic steel:

[0049] The magnetic steel is loaded from the loading frame 4021 through the conveyor belt 4022, and the driving motor 4023 drives the conveyor belt to move through the driving chain 4024, and the magnetic steel is transported to the servo pusher 403;

[0050] The servo push device 403 uses a linear module 4031 and a servo motor 4032 to control the movement of a push block 4034 and push it into a magnetic steel guide groove 4041;

[0051] The servo propulsion device 405 controls the movement of the push block 4055 through the linear module 4051 and the servo motor 4052, and is driven by the servo cylinder 4053 to push the magnet 4042 from the magnet guide groove 4041 into the magnet pressing device 406;

[0052] The magnetic steel pressing device 406 uses the pressing force provided by the cylinder 4061 to push the magnetic steel on the material guide upper mold 4064 downward through the pressing die. The magnetic steel is sent into the material guide lower mold 4065 along the material guide upper mold 4064, and finally enters the designated position on the iron core below it from the material guide lower mold 4065.

[0053] Compared with the prior art, the advantages of the present invention are:

[0054] The present invention realizes fully automated operations of automatic installation of end covers, automatic feeding of iron cores, automatic insertion of magnetic steel, automatic rivet insertion, riveting, marking, and offline operation. The assembly line has the advantages of stable feeding and riveting, flexible production, and comprehensive process monitoring, thereby improving production efficiency and assembly quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 A three-dimensional diagram of the tooling plate positioning and lifting mechanism;

[0056] Figure 2 A three-dimensional diagram of the automatic installation mechanism for the lower end cover;

[0057] Figure 3 It is a three-dimensional diagram of the automatic core installation mechanism;

[0058] FIG4( a ) is a three-dimensional diagram of the automatic magnet insertion mechanism;

[0059] FIG4( b ) is a structural diagram of the automatic magnet feeding device in the automatic magnet insertion mechanism;

[0060] FIG4( c ) is a structural diagram of a servo pusher device in an automatic magnetic steel insertion mechanism;

[0061] FIG4( d ) is a structural diagram of a magnetic steel feeding device in an automatic magnetic steel insertion mechanism;

[0062] FIG4( e ) is a structural diagram of a servo propulsion device in an automatic magnetic steel insertion mechanism;

[0063] FIG4( f ) is a structural diagram of a magnetic steel pressing device in an automatic magnetic steel insertion mechanism;

[0064] Figure 5 It is a structural diagram of the automatic installation mechanism of the lower end cover;

[0065] Figure 6 It is a structural diagram of the rivet-piercing mechanism 1;

[0066] Figure 7 It is the structural diagram of the rivet-piercing mechanism 2;

[0067] Figure 8 It is the structural diagram of the rivet riveting and blanking mechanism;

[0068] Fig. 9 This is the structural diagram of the laser marking mechanism;

[0069] Fig.10 It is the structural diagram of roller polishing and packing mechanism;

[0070] Fig.11 This is a structural diagram of the mechanism for returning the tooling plate to its original position;

[0071] Fig.12 This is a top view of the variable frequency rotor automatic assembly line;

[0072] Fig.13 It is the position relationship diagram of the magnetic steel feeding device and the servo pushing device;

[0073] Fig.14 It is a position relationship diagram of the magnetic steel feeding device and the servo propulsion device;

[0074] Fig.15 It is a position relationship diagram of the servo propulsion device and the magnetic steel pressing device;

[0075] Fig.16 It is a position relationship diagram of the pressing rod and the material guiding upper die in the magnetic steel pressing device;

[0076] Fig.17 It is a position relationship diagram of the pressing rod, the material guiding upper die, the material guiding lower die and the iron core in the magnetic steel pressing device;

[0077] Fig.18 It is a position relationship diagram of the material guiding upper die and the material guiding lower die in the magnetic steel pressing device;

[0078] Fig.19 This is a structural diagram of the material guiding lower die in the magnetic steel pressing device;

[0079] Fig. 20 This is a structural diagram of the material guiding upper die in the magnetic steel pressing device;

[0080] Fig.21 It is a schematic diagram of the relative positions of the servo lifting platform and the tooling plate at the magnetic steel pressing device;

[0081] Fig. 22 It is a three-dimensional picture of the tooling board;

[0082] Fig.23 This is the structural diagram of the tooling board;

[0083] Fig.24 It is the structural diagram of the tooling base in the tooling plate;

[0084] Fig.25 A schematic diagram showing the positioning of the tooling plate on the line body;

[0085] Fig.26 It is a schematic diagram of the position of the pressure rod and the material guide upper die;

[0086] Figures 27-28 It is a partial diagram of the magnetic steel feeding device;

[0087] Fig.29 for Fig.21 The structural diagram of the servo jacking platform;

[0088] Fig.30 It is a partial diagram of the automatic installation mechanism of the upper end cover;

[0089] Figures 31-32 A three-dimensional diagram of the automatic installation mechanism of the upper end cover;

[0090] Fig.33 It is the structural diagram of the iron core;

[0091] Fig.34 This is a schematic diagram of the installation of the upper end cover;

[0092] Fig.35 This is a structural diagram of the lower end cover.

[0093] Among them, 10, tooling plate positioning and lifting mechanism; 101, tooling plate conveying bracket; 102, tooling plate; 103, tooling base; 104, rotor positioning seat; 105, ejector pin; 106, clamping plate; 107, stop cylinder;

[0094] 20. Automatic installation mechanism for lower end cover; 201. Frame 1; 202. Vacuum suction cup; 203. Servo transfer manipulator 1; 204. Lower end cover material box; 205. Lifting and discharging device 1; 206. Material changing turntable 1;

[0095] 30. Iron core automatic installation mechanism; 301. Robot installation base; 302. Four-axis robot; 303. Iron core clamping device; 304. Visual camera; 305. Lighting device; 306. Iron core conveyor belt;

[0096] 40. Automatic magnet insertion mechanism; 401. Frame assembly; 402. Automatic magnet feeding device; 403. Servo pushing device; 404. Magnet feeding device; 405. Servo pushing device; 406. Magnet pressing device; 407. Servo lifting platform;

[0097] 4021, feeding rack; 4022, conveyor belt; 4023, driving motor; 4024, belt transmission mechanism;

[0098] 4031, linear module 1; 4032, servo motor 1; 4033, laser rangefinder; 4034, push block 1;

[0099] 4041, magnetic steel guide groove; 4042, magnetic steel; 4043, shift fork; 4044, steel ball groove; 4045, pressure plate;

[0100] 4051, linear module 2; 4052, servo motor 2; 4053, servo cylinder; 4054, moving base plate; 4055, push block 2;

[0101] 4061, cylinder; 4062, pressure rod connecting seat; 4063, pressure rod; 4064, material guiding upper die; 4065, material guiding lower die;

[0102] 50. Automatic installation mechanism for upper end cover; 501. Frame 2; 502. Vacuum suction cup 2; 503. Servo transfer manipulator 2; 504. Lower end cover material box; 505. Lifting and discharging device 2; 506. Material changing turntable 2;

[0103] 60. Riveting mechanism 1; 601. Frame 3; 602. Rotating jacking platform 1; 603. Riveting device 1; 604. Air pipe 1; 605. Blowing nail system 1;

[0104] 70. Rivet insertion mechanism 2; 701. Frame 4; 702. Rotating jacking platform 2; 703. Rivet insertion device 2; 704. Air pipe 2; 705. Blowing nail system 2;

[0105] 80. Rivet riveting and unloading device; 801. Frame five; 802. Lower tooling; 803. Rivet pressing; 804. Hydraulic press; 805. Upper pressure head device; 806. Lower pressure head device; 807. Rotating gripper; 808. Rotating lifting platform three;

[0106] 90. Laser marking mechanism; 901. Adjustment mechanism; 902. Laser; 903. Laser control system;

[0107] 100. Roller polishing and packing mechanism; 1001. Flat belt line; 1002. Roller polishing machine device; 1003. Roller polishing operating table;

[0108] 110. Mechanism for returning the tooling plate to its original position; 11001. End stop cylinder; 11002. Press head; 11003. Guide rod; 11004. Rotor riveting tooling plate. DETAILED DESCRIPTION

[0109] The variable frequency rotor automatic assembly line and assembly process of the present invention will be described in more detail below in conjunction with the schematic diagram, wherein the preferred embodiment of the present invention is shown, and it should be understood that those skilled in the art can modify the present invention described herein while still achieving the beneficial effects of the present invention. Therefore, the following description should be understood as being widely known to those skilled in the art, and not as a limitation of the present invention.

[0110] like Figures 1 to 32 , a variable frequency rotor automatic assembly line, aims to realize the automatic installation of end caps, cores, magnetic steel, and the fully automated operation of riveting, laser marking and packaging. The following is a specific implementation scheme of the present invention, which describes in detail the penetration of the rotor riveting tooling plate in the entire production line and the coherent operation of each part, specifically including:

[0111] The lower end cover automatic installation mechanism 20, the automatic magnetic steel insertion mechanism 40, the upper end cover automatic installation mechanism 50, the rivet insertion mechanism 1 60, the rivet insertion mechanism 2 70, the rivet riveting and feeding mechanism 80, the laser marking mechanism 90, the roller polishing and packing mechanism 100 are arranged in sequence along the moving direction of the tooling plate.

[0112] The iron core automatic installation mechanism 30 is arranged between the lower end cover automatic installation mechanism 20 and the automatic magnetic steel insertion mechanism 40 , and is located on one side of the lower end cover automatic installation mechanism 20 .

[0113] The tooling plate positioning and lifting mechanism 10 is as follows Figure 1As shown, throughout the entire assembly process, it can move along the tooling plate conveying bracket 101 (line body). Among them, the structure involved in the movement of the tooling plate along the tooling plate conveying bracket 101 is the prior art.

[0114] like Figure 1 , Fig. 22 , Fig.23 and Fig.24 As shown, the tooling plate positioning and lifting mechanism 10 includes:

[0115] The bottom plate 102 has a tooling base 103 disposed thereon, and a rotor positioning seat 104 is connected to the tooling base 103 via fasteners.

[0116] The ejector pin 105 is used to position the upper end cover, the core, and the lower end cover. It is located in the tooling base 103, and its upper end can pass through the upper end surface of the rotor positioning seat 104, and its lower end passes through the tooling base 103 and is located above the bottom plate 102. Before jacking, the ejector pin 105 is placed in the jacking cylinder on the front of the bottom plate 102, and the jacking cylinder passes through the jacking cylinder.

[0117] Before jacking, the ejector pin 105 is placed on the upper end surface of the jacking cylinder.

[0118] In this embodiment, the number of the ejector pins 105 is 3, and one ejector cylinder can lift up one ejector pin 105 .

[0119] The lifting cylinder has a fixed cylinder body, which is located below the bottom plate 102 , and its output shaft can pass through the lifting cylinder on the bottom plate 102 .

[0120] The clamping plate 106 is used to limit the position of the ejector pin 105 after being lifted, and is clamped on the tooling base 103 through a rubber ring.

[0121] The bottom plate 102 , the tooling base 103 , the rotor positioning seat 104 , the ejector pin 105 , and the clamping plate 106 form a tooling plate.

[0122] The stop cylinder 107 is fixed to the line body, and an adjustment slot is provided at the end of the output shaft thereof. An adjustment rod is hinged in the adjustment slot, and the adjustment rod is engaged with the slot on the bottom plate 102 to position the bottom plate 102 .

[0123] Working principle of tooling plate positioning and lifting mechanism 10:

[0124] When the bottom plate 102 arrives at the designated position along with the tooling plate conveying bracket 101, the stop cylinder 107 is first actuated to fix (limit) the bottom plate 102 at the positioning position.

[0125] Subsequently, according to the needs of the workstation, the lifting cylinder at the workstation is started to lift the ejector pin 105 on the bottom plate 102 to a predetermined height, so that the tooling plate is precisely positioned.

[0126] After the ejector pin 105 is lifted into place, the clamping plate 106 is pressed tightly to ensure that it will not move during the subsequent assembly process.

[0127] That is, during the entire assembly process, a stop cylinder 107 is provided at each workstation, and a lifting cylinder is provided at the tooling plate positioning lifting mechanism 10 .

[0128] Among them, the lower end cover automatic installation mechanism 20, the iron core automatic installation mechanism 30, the automatic magnetic steel insertion mechanism 40, the upper end cover automatic installation mechanism 50, the rivet insertion mechanism 1 60, the rivet insertion mechanism 2 70, the rivet riveting and unloading mechanism 80, the laser marking mechanism 90, and the roller polishing and packing mechanism 100 respectively form corresponding workstations.

[0129] After positioning is completed, each mechanism is reset, the stop cylinder 107 is released, the tooling plate is released, and the tooling plate continues to move to the next station to prepare for the next installation link.

[0130] like Figure 2 , Figures 30-32 As shown, the lower end cover automatic installation mechanism 20 is used to install the lower end cover (such as Fig.35 ) is loaded into a tooling plate, which includes:

[0131] A frame 201 is provided with a servo transfer robot 203 and a lifting and discharging device 205.

[0132] The material changing turntable 206 is used to rotate the lower end cover material box 204 to above the output end of the lifting and discharging device 205, and is connected to the frame 201 through a rotating motor, and the rotating motor is arranged on the frame 201.

[0133] A pair of lower end cover material boxes 204 are arranged on the material changing turntable 1 206 .

[0134] The lower end cover material box 204 is a hollow structure with open upper and lower end surfaces, and is used to receive the lower end cover. A receiving plate for receiving the lower end cover is placed on the lower end surface.

[0135] The lower end caps in the lower end cap material box 204 are placed manually or by a robot. A lower end cap material box 204 receives a plurality of lower end caps.

[0136] The servo transfer robot 203 is used to move the lower end cover in the lower end cover material box 204 to the tooling plate, which is located above the lower end cover material box 204.

[0137] The vacuum suction cup 202 is used to absorb the lower end cover, which is arranged at the output end of the servo transfer robot 203. That is, the loading box continuously sends the upper end cover to the vacuum suction cup through the cylinder lifting action.

[0138] The lifting and discharging device 205 has an output end located below a receiving plate of one of the lower end cover material boxes 204 .

[0139] Working principle of the lower end cover automatic installation mechanism 20:

[0140] The lower end cover material box 204 delivers the lower end covers one by one to the lifting and discharging device 205 through the rotation of the material changing turntable 206.

[0141] When the lifting and discharging device 205 is started, the lower end cover on the receiving plate is lifted to the grabbing position of the vacuum suction cup 202 .

[0142] The servo transfer robot 203 cooperates with the vacuum suction cup 202 to absorb and move the lower end cover 207 to the installation position. The servo transfer robot 203 accurately places the lower end cover (a hole is opened on the lower end cover for the ejector pin 105 to pass through) on the positioning ejector pin 105 on the bottom plate 102 to ensure its accurate position.

[0143] Before the lower end cover is mounted on the tooling plate, the ejector pin 105 is lifted by the lifting cylinder and finally passes through the rotor positioning seat 104, ensuring that the portion thereof extending out of the rotor positioning seat 104 can pass through the subsequent iron core and the upper end cover.

[0144] After the installation is completed, the servo transfer robot 203 and the vacuum suction cup 202 return to the initial position, ready for the next grab and installation. The tooling plate with the lower end cover continues to move forward along the tooling plate conveying bracket 101 to the core installation station.

[0145] like Figure 3 As shown, the core automatic installation mechanism 30 is used to install the core on the lower end cover on the tooling plate, which includes:

[0146] The four-axis robot 302 is mounted on the robot mounting base 301; the core clamping device 303 is mounted on the robot mounting base 301.

[0147] The visual camera 304 and the lighting device 305 are both mounted on the profile via a bracket, and the two constitute a visual recognition system.

[0148] The iron core conveyor belt 306 is used to convey the iron core to the four-axis robot 302 .

[0149] Working principle of the core automatic installation mechanism 30:

[0150] Specifically, the vibrating plate delivers the iron cores one by one from the iron core material box (a hollow structure with an open upper end surface) to the iron core conveyor belt 306 through vibration, and arranges them neatly.

[0151] The vibrating plate is located at the input end of the core conveyor belt 306 .

[0152] The iron core conveyor belt 306 conveys the iron core to the visual recognition system, and the visual camera 304 recognizes the position and posture of the iron core under the illumination of the lighting device 305 and transmits it to the four-axis robot 302 system;

[0153] Since the position and posture of the iron core are required, the four-axis robot 302 grasps the iron core, adjusts the one that does not meet the position and posture, and installs it on the tooling plate equipped with the lower end cover.

[0154] After the iron core is mounted on the tooling plate, the iron core is penetrated by the ejector pin 105 .

[0155] The tooling plate equipped with the lower end cover and the iron core continues to move along with the tooling plate conveying bracket 101 to the position of the automatic magnetic steel insertion mechanism 40, ready for the installation of the magnetic steel 401.

[0156] The automatic core installation mechanism 30 is equipped with a variety of visual detection algorithms, which can identify different types and specifications of cores and automatically adjust the robot's grasping and placement strategies.

[0157] The mechanism has an automatic calibration function, which regularly calibrates the manipulator and visual camera to ensure the accuracy of iron core detection and grasping. After grasping the iron core, its position is corrected before installation.

[0158] Figure 4, Figures 13 to 20 As shown, the automatic magnet insertion mechanism 40 is used to press the magnet into the iron core (such as Fig.33 shown), including:

[0159] The frame assembly 401 , the tooling plate conveying bracket 101 passes through the frame assembly 401 .

[0160] The magnetic steel automatic feeding device 402, the servo pushing device 403, the magnetic steel feeding device 404, the servo pushing device 405 and the magnetic steel pressing device 406 are connected in sequence according to the assembly process.

[0161] The magnetic steel automatic feeding device 402 is used to transfer the magnetic steel to the servo pushing device 403, which includes:

[0162] A loading frame 4021 is provided with a belt transmission mechanism 4024, and the belt transmission mechanism 4024 drives the conveyor belt 4022 to operate.

[0163] Specifically, the conveyor belt 4022 connects the first pulley and the second pulley, both of which are rotatably mounted on the loading frame 4021, and the first pulley is connected to the driven wheel of the belt transmission mechanism 4024.

[0164] The driving motor 4023 is used to drive the active pulley in the belt transmission mechanism 4024.

[0165] A row of magnets is placed on the conveyor belt 4022 manually or by a robot, and their positions are ensured to be correct.

[0166] When the magnetic steel is loaded, the tooling plate equipped with the lower end cover and the iron core has reached the corresponding position of the magnetic steel pressing device 406, such as Fig.17 shown.

[0167] Servo pusher 403, as shown in FIG4(c), Fig.13 As shown, it is used to feed the magnetic steel into the magnetic steel feeding device 404, which is installed on the loading frame 4021 and is located above the conveyor belt 4022, and is arranged near the output end of the magnetic steel guide groove 4041 in the magnetic steel feeding device 404, and includes:

[0168] The linear module 1 4031 is connected to the feeding frame 4021 through a connecting piece 1. In this embodiment, the linear module 1 4031 is a ball screw pair.

[0169] A servo motor 4032 is used to drive a linear module 4031, which is installed on a connector 1.

[0170] The push block 4034 is used to push a row of magnets on the conveyor belt 4022 into the magnet guide groove 4041 in the magnet feeding device 404 and is connected to the output end of the linear module 4031.

[0171] The front side of the magnet points to the concave side.

[0172] The laser rangefinder 4033 is used to detect the distance between the push block 1 4034 and the magnetic steel to be pushed, and is arranged on the connecting member 1. Specifically, when the distance is less than a threshold value, the push block 1 4034 stops moving.

[0173] As shown in FIG. 4( d ), the magnetic steel feeding device 404 is used to receive a row of magnetic steels pushed by the servo pushing device 403 , and is installed on the frame assembly 401 , and includes:

[0174] The magnetic steel guide groove 4041 is formed in the feeding device body and extends along the pushing direction of the push block 4034 .

[0175] A row of magnets 4042 is arranged in sequence in the magnet guide groove 4041 .

[0176] Steel ball groove 4044, such as Figures 27-28 As shown, it is fixedly arranged on the feeding device body, and a plurality of springs arranged along the magnetic steel guide groove 4041 are installed therein, the ends of the springs are connected to steel balls, and the steel column is located between two adjacent magnetic steels to avoid complete overlap of the two adjacent magnetic steels, that is, to form a gap between the two adjacent magnetic steels.

[0177] The push block 2 4055 of the subsequent servo propulsion device 405 is inserted from the gap between two adjacent magnetic steels, such as Fig.15 As shown, remove one of the magnets.

[0178] Fork 4043, as shown in FIG4(d), Figures 27-28 As shown, one end thereof facing the magnetic steel guide groove 4041 is rotatably arranged on the feeding device body, and the other end thereof is connected to the linear motion mechanism (cylinder).

[0179] When the push block 1 4034 pushes a row of magnets in, the linear motion mechanism retracts, and the shift fork 4043 does not contact the magnets. After a row of magnets is fully inserted, the shift fork 4043 is reset and abuts against the back of the second magnet from the output end of the magnet guide slot 4041.

[0180] The push plate 4045 is used to position the adjustment strip, which is installed in the groove of the feeding device body. As shown in Figure 4 (d), the push plate 4045 is arranged on the feeding device body, and an elastic element is arranged on its inner wall, which squeezes the adjustment strip.

[0181] The magnet 4042 is positioned in the guide groove 4041 by adjusting the shift fork 4043 and the steel ball groove 4044 to ensure that the magnet 4042 accurately enters the waiting position.

[0182] As shown in FIG. 4( e ), the servo propulsion device 405 is used to feed the magnetic steel in the magnetic steel feeding device 404 into the guide upper mold 4064 in the magnetic steel pressing device 406 . Fig.14 As shown, it can move along the pushing direction of the push block 4034 and can be lifted and lowered, and it includes:

[0183] The second linear module 4051 is connected to the loading frame 4021 via the movable bottom plate 4054. In this embodiment, the second linear module 4051 is a ball screw pair.

[0184] The second servo motor 4052 is used to drive the second linear module 4051 and is installed on the mounting base of the second linear module 4051.

[0185] The push block 4055 is engaged with the front face of the magnet to feed the magnet into the material guiding upper die 4064 in the magnet pressing device 406.

[0186] The servo cylinder 4053 is used to drive the push block 4055 to rise and fall so as to be inserted into the gap between the two magnets from top to bottom. The servo cylinder 4053 is connected to the output end of the linear module 4051 through the connecting plate. The output end of the servo cylinder 4053 is connected to the push block 4055.

[0187] like Figures 15-20 , Fig.264(f), the magnetic steel pressing device 406 is used to receive the three magnetic steels required by the iron core and press them into the mounting grooves on the iron core, which includes:

[0188] The cylinder 4061 can move up and down, and its output end is connected to the pressure rod connecting seat 4062 through a connecting member;

[0189] The pressure rod 4063 has an upper end connected to the pressure rod connecting seat 4062 and a lower end connected to the pressure die. The pressure die can pass through the material guide upper die 4064 and abut against the magnetic steel attached to the upper section of the material guide upper die 4064. Fig.26 shown.

[0190] The material guide upper mold 4064 is used to receive the magnetic steel, which is installed on the base plate through a bearing. The base plate is fixedly arranged. The upper section of the material guide upper mold 4064 forms an inwardly concave magnetic steel groove, and the convex surface of the magnetic steel fits the magnetic steel groove;

[0191] A protrusion is formed on the inner wall of the lower section of the material guiding upper mold 4064 for contacting the concave surface of the magnetic steel.

[0192] The lower end of the material guiding upper die 4064 is connected to the material guiding lower die 4065, and the lower end thereof is connected to the belt transmission component to realize rotation.

[0193] Under the action of the pressing die, the magnetic steel moves along the material guiding upper die 4064 , passes through the lower section of the material guiding upper die 4064 , and the material guiding lower die 4065 .

[0194] The guide lower die 4065 has a guide gap on its inner circumference for the magnetic steel and the die to pass through, such as Fig.19 shown.

[0195] And servo lifting platform 407, such as Fig.21 , Fig.29 As shown, displacement along the three degrees of freedom of XYZ can be generated, which is used to drive the tooling plate to move in two directions within the plane. It is located below the wire body and can be raised and lowered along the Z direction.

[0196] When the three magnets reach the lower guide die 4065 and contact the iron core, the servo lifting platform 407 rises and inserts into the tooling plate, and then under the action of the servo lifting platform 407, X-direction movement and Y-direction movement are generated.

[0197] Therefore, during the process of pressing the magnets, the tooling plate carrying the iron core can be adjusted within a small range to ensure that the three magnets are accurately inserted into the corresponding installation slots.

[0198] The working principle of the magnetic steel pressing device 406 is as follows: the magnetic steels of the material guiding upper die 4064 and the material guiding lower die 4065 are pressed together by using the pressing rod 4063 and the pressing die.

[0199] like Figures 14 to 21 , Fig.26 As shown, the push block 2 4055 sends a magnetic steel into the material guide upper die 4064, and then the material guide upper die rotates, and the push block 2 4055 continues to push until the material guide upper die 4064 carries 3 magnetic steels;

[0200] Then, the pressing rod 4063, driven by the cylinder 4061, drives the pressing die to move downward, and the pressing die pushes the magnetic steel on the material guide upper die 4064 downward, and the magnetic steel is sent into the material guide lower die 4065 along the material guide upper die 4064, and finally enters the iron core below the material guide lower die 4065. Fig.17 As shown, at this time, the tooling plate equipped with the iron core is located above the servo lifting platform 407.

[0201] Working principle of automatic magnetic steel insertion mechanism 40:

[0202] The magnetic steel is loaded from the loading frame 4021 through the conveyor belt 4022 , and the conveyor belt is driven by the driving motor 4023 through the driving belt transmission mechanism 4024 to move the magnetic steel to the servo pushing device 403 .

[0203] The servo push device 403 uses a linear module 4031 and a servo motor 4032 to control the movement of a push block 4034 , accurately locates a magnetic steel 4042 through a laser rangefinder 4033 , and pushes it into a magnetic steel guide groove 4041 .

[0204] The servo propulsion device 405 controls the movement of the push block 4055 through the linear module 4051 and the servo motor 4052, and is driven by the servo cylinder 4053 to push the magnetic steel 4042 from the guide groove 4041 into the device to be placed.

[0205] The magnetic steel pressing device 406 uses the pressing force provided by the cylinder 4061 to press the magnetic steel 4042 in the material guide upper mold 4064 and the material guide lower mold 4065 through the pressure rod connecting seat 4062 and the pressure rod 4063 to ensure that the magnetic steel 4042 is firmly embedded in the specified position.

[0206] The servo lifting platform 407 cooperates with the operation of the entire mechanism to support and lift the workpiece, ensuring that the magnetic steel 4042 can be inserted smoothly.

[0207] In addition, the automatic magnet insertion mechanism 40 is provided with a magnet detection sensor, which can monitor the number and position of the magnets in real time to avoid missing or misplaced magnets.

[0208] The mechanism is equipped with a temperature monitoring system to monitor the temperature of the magnet in real time to prevent high temperature from affecting the performance of the magnet; a magnet fragment collection device is designed to collect fragments generated by press-fitting to prevent fragments from scattering and affecting production and equipment operation; a high-precision servo control system is used to ensure the speed and position accuracy of magnet advancement and press-fitting, thereby improving assembly quality; a magnet error prevention device is provided to ensure that each piece of magnet is correctly installed in the iron core to prevent assembly errors from affecting product quality; an intelligent control system is equipped to automatically adjust the magnet advancement speed and strength according to production needs, thereby improving assembly efficiency and quality.

[0209] like Figure 5 As shown, the upper end cover automatic installation mechanism 50 is used to install the upper end cover (such as Fig.34 ) is installed on the iron core equipped with magnetic steel, and its structure is the same as that of the lower end cover automatic installation mechanism 20, which includes:

[0210] A second frame 501, a second vacuum suction cup 502, a second servo transfer robot 503, a lower end cover material box 504, a second lifting and discharging device 505 and a second material changing turntable 506.

[0211] Working principle of the upper end cover automatic installation mechanism 50:

[0212] The upper end cover material box 504 delivers the upper end covers one by one to the lifting and discharging device 2 505 through the rotation of the material changing turntable 2 506 .

[0213] The lifting and discharging device 505 is started to lift the upper end cover to the grabbing position of the vacuum suction cup 502.

[0214] The servo transfer robot 503 cooperates with the vacuum suction cup 502 to absorb the upper end cover and move it to the installation position.

[0215] The servo transfer robot 2 503 places the upper end cover precisely on top of the iron core 306 and the lower end cover to ensure that the position is accurate.

[0216] After the installation is completed, the servo transfer robot 2 503 and the vacuum suction cup 503 return to the initial position to prepare for the next grasping and installation.

[0217] At this time, the tooling plate carries the installed lower end cover, iron core, magnetic steel 4042 and upper end cover and moves to the rivet insertion mechanism 60 position.

[0218] like Figure 6 As shown, the rivet insertion mechanism 60 includes:

[0219] Rack three 601;

[0220] The rotating lifting platform 1 602 can be raised and lowered along the frame 3 601 and can rotate itself.

[0221] The rivet-piercing device 603, the air pipe 604 and the rivet-blowing system 605 are connected in sequence and together constitute the rivet-piercing system.

[0222] Working principle of rivet piercing mechanism 1:

[0223] The tooling plate moves to the rivet insertion mechanism 60 position, and the rotary lifting platform 602 is started to lift the workpiece to the rivet position.

[0224] The rivet-piercing device 603 passes the rivets through the upper end cover, the iron core and the lower end cover through precise control.

[0225] The rivet blowing system 605 blows the rivets in through the air pipe 604 to ensure that the rivets completely pass through all parts.

[0226] After the rivet insertion is completed, the rotary lifting platform 1 602 is reset, and the tooling plate continues to move to the rivet insertion mechanism 2 70 position.

[0227] like Figure 7 As shown, the rivet-piercing mechanism 2 70 has the same structure as the rivet-piercing mechanism 1 60, and includes a frame 4 701, a rotating jacking platform 2 702, wherein the rivet-piercing device 2 703, the air pipe 2 704 and the rivet-blowing system 2 705 together constitute the rivet-piercing system;

[0228] Specifically, the tooling plate 106 moves to the position of the rivet insertion mechanism 27, and the rotary lifting platform 2702 is started to lift the workpiece to the position of the rivet 706. The rivet insertion device 2703 passes the rivet 706 through the upper end cover, the iron core and the lower end cover through precise control. The rivet blowing system 2705 blows the rivet through the air pipe 2704 to ensure that the rivet completely passes through all parts. After the rivet insertion is completed, the rotary lifting platform 2702 is reset, and the tooling plate continues to move to the position of the rivet riveting and unloading device 80.

[0229] The first rivet inserting mechanism 60 and the second rivet inserting mechanism 70 are used to insert rivets on different tooling plates respectively.

[0230] The rivet-piercing mechanism is equipped with a multi-stage pressure sensor, which can adjust the pressing force according to the specifications and materials of the rivets to ensure the riveting quality; it is equipped with an automatic rivet changing device, which can automatically replace new rivets when the rivets are used up, thereby improving production efficiency; it is designed with a multi-stage pressing mode, and the appropriate pressing mode is selected according to the rivet specifications and workpiece materials to ensure the riveting effect; it has the ability to operate simultaneously in multiple stations, and can press rivets on multiple workpieces at the same time, thereby improving production efficiency.

[0231] like Figure 8 As shown, the rivet riveting and unloading device 80 includes:

[0232] Rack five 801;

[0233] The rotary lifting platform 808 is used for lifting the tooling plate and is arranged on the frame 801.

[0234] The rivet press 803 is located on one side of the tooling plate conveying bracket 101 and above the tooling plate.

[0235] Hydraulic press 804;

[0236] The upper pressure head device 805 is connected to the output end of the hydraulic press 804;

[0237] The lower pressure head device 806 is located above the upper pressure head device 805.

[0238] A rotating gripper 807 is used to transfer the workpiece at the rivet press 803 to the hydraulic press 804;

[0239] The lower tooling 802 is installed on one side of the plate loading and conveying bracket 101, and is used to receive the workpiece after marking and release the positioning piece on the workpiece.

[0240] Working principle of rivet riveting and unloading device 80:

[0241] When the tooling plate moves to the position of the rivet pressing device 803, the rotary lifting platform 3 808 starts, lifts the workpiece to the rivet pressing device 803 and presses the rivet to the appropriate position, and the rotary gripper 807 grabs the pressed iron core and rotates it to the hydraulic press through the rotary lifting platform at the bottom. Under the action of the hydraulic press 804, the rivet is pressed to the predetermined position.

[0242] The upper pressing head device 805 ensures that the rivet is pressed and fixed through precise control.

[0243] After riveting is completed, the rotating gripper 807 moves the riveted workpiece to the laser marking mechanism 90 for marking. After marking is completed, the rotating gripper 807 moves it to the lower tooling 802 to release the fixation. The workpiece is riveted and ready to be offline, and then the tooling plate 106 continues to move.

[0244] Laser marking mechanism, such as Fig. 9 As shown, it includes an adjustment mechanism 901 , wherein a laser 902 and a laser control system 903 are mounted on the adjustment mechanism 901 .

[0245] Specifically, after the workpiece is placed in the laser marking position by the rotating gripper 806, the adjustment mechanism 901 adjusts the workpiece to the marking position to ensure the accuracy of the marking position. The laser 902 accurately marks the workpiece according to the instructions of the laser control system 903. After the marking is completed, the workpiece continues to be conveyed to the roller light and boxing station 100.

[0246] The laser marking mechanism 90 can accurately mark the qualified iron core through the laser and control system. The mechanism has a two-dimensional code marking function and can print a two-dimensional code on the iron core, which is conducive to subsequent product tracking and management; it is equipped with a protective cover to ensure the safety of operators during laser marking and prevent laser damage to the human body; it has an automatic focus function and can automatically adjust the laser focal length according to the height of the workpiece to ensure clear and accurate coding; it is designed with a dustproof and waterproof structure so that the laser and control system can operate normally in a dusty and humid environment, extending the service life of the equipment; it is equipped with an automatic laser power adjustment function, which can automatically adjust the laser power according to the marking material and requirements to ensure the marking effect; it also has a multi-language coding function, which can mark different languages ​​on the iron core according to customer needs to meet different market needs.

[0247] Roller polishing and boxing mechanism 100, such as Fig.10 As shown, it includes a flat belt line 1001. A roller polishing machine device 1002 is installed on a roller polishing operating table 1003.

[0248] Specifically, the workpiece is transferred to the roller polishing device 1002 via the flat belt line 1001. The roller polishing device 1002 performs roller polishing on the surface of the workpiece to ensure that the surface is smooth and flawless. The roller polishing operation table 1003 is used for the final inspection of the workpiece to ensure that each workpiece meets the quality requirements. The qualified workpieces then enter the packaging stage to complete the entire assembly process.

[0249] The roller polishing and packaging mechanism 100 can realize automatic offline and manual inspection and packaging of the rotor through the roller polishing device and the roller polishing workbench.

[0250] The mechanism is equipped with an automatic burr detection system, which can automatically detect the burr condition on the rotor surface and prompt the operator to handle it to ensure product quality; it also has an automatic statistical function, which can count the detection and processing of each workpiece and generate production reports, which is beneficial to production management; the equipped rotor automatic counting device can record the production quantity in real time, which is convenient for production statistics and management. In addition, the roller polishing and packing mechanism 100 adopts a modular design, and each functional module can be adjusted and replaced according to production needs, which enhances the flexibility and adaptability of the system; it has an automatic detection device, which can automatically detect the roller polishing and riveting quality of the rotor to ensure the qualified rate of the factory products.

[0251] The tooling plate is pushed back to its original position, such as Fig.11 As shown, it includes an end stop cylinder 11001, wherein a pressing head 11002 and a guide rod 11003 form a pressing device to press the rotor riveting tooling plate 11004 back to its original position;

[0252] Specifically, after the riveting process is completed, the tooling plate 11004 fails to return to the predetermined position, and the control system supplies air to the stop cylinder to extend its piston rod, which drives the pressure head 11002 to move downward and begins to apply pressure to the tooling plate 11004. The guide rod 11003 plays a guiding role, ensuring that the pressure head 11002 remains stable during the movement and applies pressure vertically downward.

[0253] After the pressure head 11002 contacts the rotor riveting tooling plate 11004, the pressure continues to be applied until the tooling plate 11004 completely returns to the predetermined position. During this process, the rotor riveting tooling plate 11004 moves along the guide groove or the slide rail to ensure the accuracy of the return position and complete the reset.

[0254] When the tooling plate 11004 returns to its original position, the stop cylinder stops supplying air, the piston rod retracts, and the pressure head 11002 returns to its initial position. The tooling plate 11004 is in a predetermined position, ready for the next riveting operation.

[0255] The tooling plate return mechanism is equipped with a sensor detection system that can monitor the reset status of the ejector in real time to ensure that the ejector can be reset in place every time, avoiding the impact of ejector misalignment on the next assembly; it is also equipped with an automatic lubrication device to provide lubrication for the ejector and guide rail, reduce friction, enhance the stability of the ejector reset and extend its service life.

[0256] The tooling plate return mechanism has a multi-level positioning function, which can adjust the reset height of the ejector according to the needs of different workpieces to meet the assembly requirements of various workpieces. At the same time, its equipped intelligent control system can automatically adjust the reset speed and force according to the production rhythm and workpiece type to improve production efficiency; the use of high wear-resistant materials allows the ejector and guide rails to maintain good wear resistance in long-term use, extending the service life of the equipment.

[0257] The variable frequency rotor automatic assembly line and equipment of the present invention realizes efficient, accurate and automatic assembly of variable frequency rotors by integrating advanced automation technology and equipment. This technology not only improves production efficiency and reduces labor costs, but also ensures the consistency of product quality, and has important practical value and broad market prospects.

[0258] The above is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any technician in the relevant technical field, without departing from the scope of the technical solution of the present invention, makes any form of equivalent replacement or modification to the technical solution and technical content disclosed in the present invention, which does not depart from the content of the technical solution of the present invention and still falls within the protection scope of the present invention.

Claims

1. A variable frequency rotor automatic assembly line, characterized in that: include: The lower end cover automatic installation mechanism (20), the automatic magnetic steel insertion mechanism (40), and the upper end cover automatic installation mechanism (50) are sequentially arranged along the moving direction of the tooling plate; and an automatic iron core installation mechanism (30), which is arranged between the automatic lower end cover installation mechanism (20) and the automatic magnetic steel insertion mechanism (40), and is located on one side of the automatic lower end cover installation mechanism (20); The lower end cover automatic installation mechanism (20) is used to install the lower end cover into the tooling plate; The automatic magnetic steel insertion mechanism (40) is used to press the magnetic steel into the iron core on the tooling plate, and comprises: a magnetic steel automatic feeding device (402), a servo pushing device (403), a magnetic steel feeding device (404), a servo propulsion device (405) and a magnetic steel pressing device (406), which are connected in sequence according to the assembly process; The magnetic steel automatic feeding device (402) is used to transfer a row of magnetic steels to the servo pushing device (403); The servo pusher (403) is used to feed the magnetic steel into the magnetic steel feeding device (404); The servo propulsion device (405) is used to feed the magnetic steel in the magnetic steel feeding device (404) into the magnetic steel pressing device (406); The magnetic steel pressing device (406) is used to receive the three magnetic steels required by the iron core and press them into the installation grooves on the iron core.

2. The variable frequency rotor automatic assembly line according to claim 1 is characterized in that: The magnetic steel automatic feeding device (402) comprises: A feeding frame (4021) is provided with a belt transmission mechanism (4024), and the belt transmission mechanism (4024) drives the conveyor belt (4022) to operate; The driving motor (4023) is used to drive the driving pulley in the belt transmission mechanism (4024).

3. The variable frequency rotor automatic assembly line according to claim 2 is characterized in that: The servo pusher (403) comprises: A linear module 1 (4031) is connected to a loading frame (4021) via a connecting piece 1; A servo motor 1 (4032) is used to drive a linear module 1 (4031), which is installed on a connecting piece 1; Push block 1 (4034) is used to push a row of magnetic steels on the conveyor belt (4022) into the magnetic steel guide groove (4041) in the magnetic steel feeding device (404), and is connected to the output end of linear module 1 (4031).

4. The variable frequency rotor automatic assembly line according to claim 3 is characterized in that: The magnetic steel feeding device (404) is installed on the frame assembly (401), and comprises: A magnetic steel guide groove (4041) is provided on the feeding device body and extends along the pushing direction of the push block 1 (4034); A row of magnetic steels (4042) are sequentially arranged in the magnetic steel guide grooves (4041); A steel ball groove (4044) is fixedly arranged on the feeding device body, and a plurality of springs arranged along the magnetic steel guide groove (4041) are installed therein, the ends of the springs are connected to the steel balls, and the steel column is located between two adjacent magnetic steels; The shift fork (4043) has one end facing the magnetic steel guide groove (4041) and is rotatably arranged on the feeding device body, and the other end is connected to the linear motion mechanism.

5. The variable frequency rotor automatic assembly line according to claim 4, characterized in that: The servo propulsion device (405) comprises: The second linear module (4051) is connected to the loading frame (4021) via a movable base plate (4054); Servo motor 2 (4052), used to drive linear module 2 (4051); A second push block (4055) is clamped with the front surface of the magnetic steel to feed the magnetic steel into a material guide upper mold (4064) in the magnetic steel pressing device (406); The servo cylinder (4053) is used to drive the second push block (4055) to rise and fall. It is connected to the output end of the second linear module 4051 through a connecting plate. The output end of the servo cylinder (4053) is connected to the second push block (4055).

6. The variable frequency rotor automatic assembly line according to claim 5, characterized in that: The magnetic steel pressing device (406) comprises: The cylinder (4061) can move up and down, and its output end is connected to the pressure rod connecting seat (4062) through a connecting member; A pressure rod (4063), the upper end of which is connected to the pressure rod connecting seat (4062), and the lower end of which is connected to the pressure die, and the pressure die can pass through the material guide upper die (4064) and abut against the magnetic steel attached to the upper section of the material guide upper die (4064); The material guide upper mold (4064) is used to receive the magnetic steel, which is installed on the base plate through a bearing. The base plate is fixedly arranged. The upper section of the material guide upper mold (4064) forms an inwardly concave magnetic steel groove, and the convex surface of the magnetic steel fits the magnetic steel groove; The lower end of the material guiding upper die (4064) is connected to the material guiding lower die (4065), and the lower end thereof is connected to the belt transmission component to achieve rotation. The material guiding lower die (4065) has a material guiding gap on its inner circumference for the magnetic steel and the pressing die to pass through.

7. The variable frequency rotor automatic assembly line according to claim 6, characterized in that: The lower end cover automatic installation mechanism (20) comprises: A frame (201) on which a servo transfer robot (203) and a lifting and discharging device (205) are arranged; A material changing turntable (206) is used to rotate the lower end cover material box (204) to above the output end of the lifting and discharging device (205), and is connected to the frame (201) via a rotating motor, and the rotating motor is arranged on the frame (201); A pair of lower end cover material boxes (204) are arranged on the first material changing turntable (206); The lower end cover material box (204) is a hollow structure with an open upper end surface and a lower end surface, and is used to receive the lower end cover. A receiving plate for receiving the lower end cover is placed on the lower end surface. A servo transfer robot (203) is used to move the lower end cover in the lower end cover material box (204) to a tooling plate, and is located above the lower end cover material box (204); The vacuum suction cup (202) is used to absorb the lower end cover and is arranged at the output end of the servo transfer robot (203).

8. The variable frequency rotor automatic assembly line according to claim 6, characterized in that: The tooling plate comprises: A bottom plate (102) on which a tooling base (103) is disposed, and a rotor positioning seat (104) is connected to the tooling base (103) via a fastener; The ejector pin (105) is used to position the upper end cover, the iron core and the lower end cover. The ejector pin (105) is located in the tooling base (103). The upper end of the ejector pin can pass through the upper end surface of the rotor positioning seat (104). The lower end of the ejector pin passes through the tooling base 103 and is located above the bottom plate (102). Before jacking, the ejector pin is placed on the jacking cylinder on the bottom plate (102). The clamping plate (106) is used to limit the position of the ejector pin (105) after being lifted, and is clamped on the tooling base (103) through a rubber ring.

9. A variable frequency rotor automatic assembly process, based on the variable frequency rotor automatic assembly line according to any one of claims 5 to 8, characterized in that: Including the steps of inserting magnets: The magnetic steel is loaded from the loading frame (4021) via a conveyor belt (4022), and the driving motor (4023) drives the conveyor belt to move via a driving chain (4024), so as to transport the magnetic steel to the servo pushing device (403); The servo push device (403) uses a linear module (4031) and a servo motor (4032) to control the movement of a push block (4034) and push it into a magnetic steel guide groove (4041); The servo propulsion device (405) controls the movement of the second push block (4055) through the second linear module (4051) and the second servo motor (4052), and is driven by the servo cylinder (4053) to push the magnetic steel (4042) from the magnetic steel guide groove (4041) into the magnetic steel pressing device (406); The magnetic steel pressing device (406) uses the pressing force provided by the cylinder (4061) to push the magnetic steel on the material guide upper die (4064) downward through the pressing die, and the magnetic steel is sent into the material guide lower die (4065) along the material guide upper die (4064), and finally enters the designated position on the iron core below it through the material guide lower die (4065).

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