A fully automatic press-fit device for a motor rotor, bearings at both ends, and a front cover

Abstract

The present invention provides a fully automatic press-fitting device for a motor rotor, bearings at both ends, and a front end cover, belonging to the technical field of automatic press-fitting equipment for motors. The device comprises two equipment bodies, wherein an automatic assembly line is installed inside the equipment bodies, and the two ends of the automatic assembly line pass through the two equipment bodies. A product pallet carrier is installed on the automatic assembly line, and a lifting and unloading mechanism is installed on the equipment body, and the lifting and unloading mechanism is located below the product pallet carrier. A rotor positioning and transplanting mechanism is installed inside the equipment body, and the rotor positioning and transplanting mechanism is located on both sides of the automatic assembly line. A Z-axis press-fitting mechanism is also installed on the equipment body, and the Z-axis press-fitting mechanism is located above the product pallet carrier. The present invention solves the problem that the finished rotor and the front end cover need to be manually taken out and bolted in and tightened in the current industrial production, resulting in low production efficiency, low safety, and serious waste of human resources.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic press-fitting equipment for motors, and in particular relates to a fully automatic press-fitting device for a motor rotor, bearings at both ends and a front end cover. Background Art

[0002] Equipment for press-fitting motor rotors and bearings at both ends is widely used in all rotor and bearing press-fitting processes. Currently, traditional industrial production primarily utilizes semi-automatic horizontal press-fitting machines. The rotor is manually placed horizontally in the center of a V-block, and the bearings are manually inserted into a pneumatic or hydraulic device with ejectors on both sides. The machine is manually started, the ejectors aligned with the rotor, and the bearings are pressed in. The finished rotor is then manually removed. These machines are often semi-automatic, requiring manual loading and unloading, resulting in low efficiency. Heavy rotors pose a risk of injury to workers during handling, wasting human resources.

[0003] Currently, there are two main methods for assembling finished rotors and front-end covers in traditional industrial production. One is to manually place the finished rotor vertically above the front-end cover and then use pneumatic or hydraulic pressure to press the bearing at one end of the finished rotor into the front-end cover. The other is to manually place the finished rotor horizontally into the motor stator frame. The front and rear covers are then manually pre-assembled onto the shaft extending from both ends of the rotor. Pneumatic or hydraulic pressure is then used to simultaneously press the front and rear covers into the finished rotor. These two methods require manual loading and unloading, which is inefficient. When the rotor is heavy, workers may be injured during handling, which wastes manpower. Furthermore, the circumferential rotation of the end cover can cause the through-holes on the end cover to misalign with the threaded holes on the stator frame, affecting the subsequent process of tightening the bolts between the end cover and the stator frame. Manual tapping with a rubber hammer is then used to correct the alignment before inserting the bolts for tightening. Alternatively, a guide rod is placed in advance to guide alignment. After press-fitting is complete, the guide rod is removed and the bolts are inserted for tightening. This is also inefficient and wastes manpower. Summary of the Invention

[0004] The present invention provides a fully automatic press-fitting device for a motor rotor, bearings at both ends, and a front end cover, which aims to solve the problem in current industrial production that the finished rotor and the front end cover need to be manually taken out and bolted in and tightened, resulting in low production efficiency, low safety, and serious waste of human resources.

[0005] An embodiment of the present invention provides a fully automatic press-fitting device for a motor rotor, bearings at both ends, and a front end cover, comprising two equipment bodies, an automatic assembly line installed inside the equipment bodies, the two ends of the automatic assembly line passing through the two equipment bodies, a product tray carrier installed on the automatic assembly line, a lifting and unloading mechanism installed on the equipment body, the lifting and unloading mechanism located below the product tray carrier, a rotor positioning and transplanting mechanism installed inside the equipment body, the rotor positioning and transplanting mechanism located on both sides of the automatic assembly line, and a Z-axis press-fitting mechanism installed on the equipment body, the Z-axis press-fitting mechanism located above the product tray carrier;

[0006] The automatic assembly line is used for the automatic circulation of product pallet carriers;

[0007] The product tray carrier is used to place the rotor, bearings and front end cover;

[0008] The lifting and unloading mechanism is used to automatically detect when the product tray carrier is in place, lift it off the automatic assembly line to a certain height and unload the force;

[0009] The rotor positioning and transplanting mechanism is used to position the rotor and transplant it to the Z-axis axis center position of the Z-axis pressing mechanism;

[0010] The Z-axis press-fitting mechanism is used to press-fit the rotor and the bearings at both ends, and to monitor the press-fitting force and press-fitting dimensions in real time during the press-fitting process.

[0011] Furthermore, the product pallet carrier includes a carrier base plate installed on the automatic assembly line, four positioning guide sleeves are symmetrically arranged on the center of the carrier base plate, a rotor tooling and a bearing positioning tooling are installed on the left and right sides of the carrier base plate respectively, the two rotor toolings and the two bearing positioning toolings are arranged diagonally, a front end cover positioning pin is installed in the middle position of the carrier base plate, the front end cover positioning pin is used for positioning and steering the product pallet carrier, an RFID chip is installed at the right end of the carrier base plate, the RFID chip is used for entering product information and automatic reading of the automatic assembly line.

[0012] The jacking and unloading mechanism includes a support base installed on the equipment body, a Z-axis jacking cylinder is installed in the middle position of the support base, and the output end of the Z-axis jacking cylinder is installed with a pallet carrier support plate, and four pallet carrier positioning pins are symmetrically installed on the center of the pallet carrier support plate, and the pallet carrier positioning pins are used to position the four positioning guide sleeves on the product pallet carrier. An upper unloading support block is installed on each side of the lower end of the pallet carrier support plate, and a linear slider is slidably installed on the left and right sides of the support base, and a lower unloading support block is installed on the linear slider. The lower end of the support base is installed with a horizontal extending cylinder, and the output ends of the horizontal extending cylinder are respectively connected to the corresponding linear sliders. Four Z-axis linear guide sleeves are symmetrically installed on the support base, and a Z-axis linear guide rod is slidably installed in the Z-axis linear guide sleeve. One end of the Z-axis linear guide rod passes through the Z-axis linear guide sleeve and is installed with a flat plate, and the other end of the Z-axis linear guide rod is connected to the lower end of the pallet carrier support plate.

[0013] Furthermore, the rotor positioning and transplanting mechanism includes a transplanting mechanism base plate installed on the equipment body, a Y-axis horizontal movement cylinder and a pair of slide rails 1 are installed on the transplanting mechanism base plate, a Y-axis movement connecting plate is slidably installed on the slide rail 1, one end of the Y-axis movement connecting plate is connected to the output end of the Y-axis horizontal movement cylinder, an X-axis horizontal movement cylinder is installed on one side of the Y-axis movement connecting plate, a pair of slide rails 2 are installed on the other side of the Y-axis movement connecting plate, an X-axis movement connecting plate is slidably installed on the slide rail 2, one end of the X-axis movement connecting plate is connected to the output end of the X-axis horizontal movement cylinder, a Z-axis servo module is installed on the Z-axis servo module, a Z-axis linear slider is movably installed on the Z-axis servo module, a connecting plate 1 is installed on the Z-axis linear slider, a two-finger clamping cylinder is installed on the side of the connecting plate 1 away from the Z-axis linear slider, and a rotor V-shaped positioning block is installed on the clamping end of the two-finger clamping cylinder.

[0014] Furthermore, the Z-axis pressing mechanism includes a mounting plate mounted on the equipment body, an electric servo press module is mounted on the mounting plate, a Z-axis linear guide sleeve 2 is mounted on the mounting plate, a Z-axis linear guide rod is slidably mounted in the Z-axis linear guide sleeve 2, one end of the Z-axis linear guide rod passes through the Z-axis linear guide sleeve 2 and is mounted with an assembly plate, the other end of the Z-axis linear guide rod passes through the Z-axis linear guide sleeve 2 and is mounted with a connecting plate 2, the output end of the electric servo press module passes through the mounting plate and is mounted with a pressure sensor, the lower end of the pressure sensor is connected to the upper end of the connecting plate 2, the lower end of the connecting plate 2 is provided with a dovetail slide, the right end of the connecting plate 2 is mounted with a press sleeve switching cylinder, the output end of the press sleeve switching cylinder is mounted with a press sleeve connecting block, the press sleeve connecting block can move left and right in the dovetail slide, and the lower end of the press sleeve connecting block is mounted with a press sleeve.

[0015] The beneficial effects of the present invention are:

[0016] 1. The highly automated process of the present invention does not require manual operation.

[0017] 2. The present invention adopts automatic assembly line operation, which has high work efficiency and improves the production efficiency of the enterprise.

[0018] 3. The entire process of the present invention has a stable production process and improves the consistency of the products.

[0019] 4. The present invention is suitable for mass production, thus reducing the production cost of the enterprise.

[0020] 5. The front cover of the present invention has a positioning pin in the product tray carrier to prevent it from rotating, which is beneficial to the automatic assembly of subsequent workstations.

[0021] 6. The present invention has strong adaptability and flexibility, is suitable for various motor series, and is less restricted by the size and weight of the motor. It can meet actual production needs by adjusting the clamping stroke of the rotor clamping module, the model and stroke of the screw module of the Z-axis lifting mechanism, the model and stroke of the screw module of the Z-axis pressing mechanism, replacing the size of the pressing sleeve, replacing the pressure sensor, etc.

[0022] 7. The present invention has strong compatibility. Once the target product series is determined, the vertical flexible fully automatic press-fitting process of the motor rotor, the bearings at both ends and the front end cover of the present invention can meet the production requirements of most models of the series of products.

[0023] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention;

[0026] Figure 2 This is a schematic structural diagram of a product tray carrier according to an embodiment of the present invention;

[0027] Figure 3 This is a schematic structural diagram of a lifting and unloading mechanism according to an embodiment of the present invention;

[0028] Figure 4 A schematic structural diagram of a rotor positioning and transplanting mechanism according to an embodiment of the present invention;

[0029] Figure 5 Schematic diagram of the Z-axis press-fitting mechanism structure according to an embodiment of the present invention;

[0030] Figures: 1. Automatic assembly line; 2. Equipment body; 3. Product pallet carrier; 4. Lifting and unloading mechanism; 5. Rotor positioning and transplanting mechanism; 6. Z-axis pressing mechanism; 31. Carrier base plate; 32. Positioning guide sleeve; 33. Rotor tooling; 34. Bearing positioning tooling; 35. Front cover positioning pin; 36. RFID chip; 41. Support base plate; 42. Z-axis lifting cylinder; 43. Pallet carrier support plate; 44. Pallet carrier positioning pin; 45. Upper unloading force support block; 46. Lower unloading force support block; 47. Horizontal extension cylinder; 48. Z-axis linear guide Set one; 49, linear slider; 51, rotor V-shaped positioning block; 52, two-finger clamping cylinder; 53, connecting plate one; 54, Z-axis linear slider; 55, Z-axis servo module; 56, X-axis moving connecting plate; 57, X-axis horizontal moving cylinder; 58, Y-axis moving connecting plate; 59, Y-axis horizontal moving cylinder; 510, transplanting mechanism base plate; 61, electric servo press module; 62, Z-axis linear guide sleeve two; 63, pressure sensor; 64, pressing sleeve switching cylinder; 65, dovetail slide; 66, pressing sleeve connecting block; 67, pressing sleeve; 68, connecting plate two. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention. The same figure marks in the drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Reference Figure 1-5, an embodiment of the present invention proposes a fully automatic press-fitting device for a motor rotor, bearings at both ends, and a front end cover, comprising two equipment bodies 2, an automatic assembly line 1 installed inside the equipment body 2, both ends of the automatic assembly line 1 passing through the two equipment bodies 2, a product tray carrier 3 installed on the automatic assembly line 1, a lifting and unloading mechanism 4 installed on the equipment body 2, the lifting and unloading mechanism 4 being located below the product tray carrier 3, a rotor positioning and transplanting mechanism 5 installed inside the equipment body 2, the rotor positioning and transplanting mechanism 5 being located on both sides of the automatic assembly line 1, a Z-axis press-fitting mechanism 6 also installed on the equipment body 2, the Z-axis press-fitting mechanism 6 being located above the product tray carrier 3; The automatic assembly line 1 is used for the automatic circulation of the product pallet carrier 3; the product pallet carrier 3 is used for the placement of the rotor, bearings and front end cover; the lifting and unloading mechanism 4 is used for the automatic detection of the position of the product pallet carrier 3, and to lift it off the automatic assembly line 1 to a certain height and unload the force; the rotor positioning and transplanting mechanism 5 is used to position the rotor and transplant it to the Z-axis axis position of the Z-axis pressing mechanism 6; the Z-axis pressing mechanism 6 is used to press the rotor and the bearings at both ends, and to monitor the pressing force and pressing size in real time during the pressing process; the automatic removal of the finished rotor and the front end cover and the insertion and tightening of bolts are realized in industrial production, which improves production efficiency, improves safety, and greatly saves human resources.

[0033] The product tray carrier 3 includes a carrier base plate 31 installed on the automatic assembly line 1. Four positioning guide sleeves 32 are symmetrically arranged on the center of the carrier base plate 31. A rotor tool 33 and a bearing positioning tool 34 are installed on the left and right sides of the carrier base plate 31. The two rotor toolings 33 and the two bearing positioning toolings 34 are all arranged diagonally. A front cover positioning pin 35 is installed in the middle position of the carrier base plate 31. The front cover positioning pin 35 is used for positioning and steering the product tray carrier 3. An RFID chip 36 is installed on the right end of the carrier base plate 31. The model of the RFID chip 36 is MDS D422, the RFID chip 36 is used for entering product information and automatic reading by the automatic assembly line 1; the placement of the rotor, bearing and front end cover is realized, and the robot vertically places the rotor required for production into the rotor tooling 33, and the upper bearing is pre-mounted on the outer ring of the upper end shaft of the rotor, and the lower bearing and the front end cover are also placed in the corresponding tooling positions for positioning. The front end cover adopts the front end cover positioning pin 35 and the positioning through hole on the front end cover to prevent rotation, and then the product information is entered into the RFID chip 36, and the automatic assembly line 1 automatically detects and reads the content of the RFID chip 36, and releases the product tray carrier 3 to flow to the next workstation.

[0034] The lifting and unloading mechanism 4 includes a supporting base plate 41 mounted on the equipment body 2, a Z-axis lifting cylinder 42 is installed in the middle position of the supporting base plate 41, and a pallet carrier supporting plate 43 is installed at the output end of the Z-axis lifting cylinder 42. Four pallet carrier positioning pins 44 are installed symmetrically on the center of the pallet carrier supporting plate 43. The pallet carrier positioning pins 44 are used to position the four positioning guide sleeves 32 on the product pallet carrier 3. An upper unloading support block 45 is installed on each side of the lower end of the pallet carrier supporting plate 43. A linear slider 49 is slidably installed, and a lower unloading force support block 46 is installed on the linear slider 49. A horizontal extension cylinder 47 is installed at the lower end of the support base plate 41, and the output ends of the horizontal extension cylinder 47 are respectively connected to the corresponding linear sliders 49. Four Z-axis linear guide sleeves 48 are symmetrically installed on the support base plate 41, and a Z-axis linear guide rod is slidably installed in the Z-axis linear guide sleeve 48. One end of the Z-axis linear guide rod passes through the Z-axis linear guide sleeve 48 and is installed with a flat plate, and the other end of the Z-axis linear guide rod is connected to the lower end of the tray carrier support plate 43; to achieve The product tray carrier 3 is automatically detected to be in place, and it is lifted off the automatic assembly line 1 to a certain height and the force is unloaded. After the product tray carrier 3 is in place, the RFID reader inside the equipment body 2 reads the RFID chip 36 information, sends the obtained information to the PLC and performs information processing. The Z-axis lifting cylinder 42 extends, driving the tray carrier support plate 43, the tray carrier positioning pin 44, and the upper unloading support block 45 to rise vertically along the guide Z-axis linear guide sleeve 48. The tray carrier positioning pin 44 is positioned to the four positioning guide sleeves 32 on the product tray carrier 3, and lifts it off. At a certain height from the automatic assembly line 1, the horizontal extension cylinder 47 extends, driving the linear slider 49 connected to the two ends of the horizontal extension cylinder 47 and the lower unloading force support block 46 to open outward. At this time, the lower unloading force support block 46 moves to the bottom of the upper unloading force support block 45. The reverse unloading force of the Z-axis lifting cylinder 42 is caused by gravity to make the upper unloading force support block 45 contact with the lower unloading force support block 46, so that the force on the upper pallet carrier support plate 43 during press-fitting is transmitted from the upper unloading force support block 45 to the lower unloading force support block 46 and then to the support bottom plate 41 and then to the inside of the equipment body 2.

[0035] The rotor positioning and transplanting mechanism 5 includes a transplanting mechanism base plate 510 installed on the equipment body 2, and a Y-axis horizontal moving cylinder 59 and a pair of slide rails 1 are installed on the transplanting mechanism base plate 510. A Y-axis moving connecting plate 58 is slidably installed on the slide rail 1. One end of the Y-axis moving connecting plate 58 is connected to the output end of the Y-axis horizontal moving cylinder 59. An X-axis horizontal moving cylinder 57 is installed on one side of the Y-axis moving connecting plate 58. A pair of slide rails 2 are installed on the other side of the Y-axis moving connecting plate 58. An X-axis moving connecting plate 56 is slidably installed on the slide rail 2. One end of the X-axis moving connecting plate 56 is connected to the output end of the X-axis horizontal moving cylinder 57, and a Z-axis servo module 55 is installed on the X-axis moving connecting plate 56. A Z-axis linear slider 54 is movably installed on the Z-axis servo module 55, and a connecting plate 1 53 is installed on the Z-axis linear slider 54. A two-finger clamping cylinder 52 is installed on the side of the connecting plate 1 53 away from the Z-axis linear slider 54, and a rotor V-shaped positioning block 51 is installed on the clamping end of the two-finger clamping cylinder 52; the rotor is positioned and moved to the Z-axis axis center position of the Z-axis press-fitting mechanism 6, and the product is supported. After the tray carrier 3 is in place and lifted to unload the force, the Z-axis servo module 55 drives the two-finger clamping cylinder 52 connected to the Z-direction linear slider 54 to descend to the set height at the same time. The two-finger clamping cylinder 52 is closed, and the rotor V-shaped positioning block 51 installed on the two-finger clamping cylinder 52 clamps and positions the rotor to keep the Z-axis vertical. The Z-axis servo module 55 drives the two-finger clamping cylinder 52 to rise to the set safety height to separate the rotor from the product tray carrier 3. The X-axis horizontal moving cylinder 57 is actuated to move the rotor to the Z-axis axis center position just above the bearing to be installed, that is, the Z-axis pressing mechanism 6. The Z-axis servo module 55 drives the rotor to descend, pre-installs the shaft body at one end of the rotor into the lower bearing, and makes the rotor shaft body contact with the lower bearing. After the rotor shaft body contacts with the lower bearing, the Z-axis servo module 55 continues to descend with the Z-direction linear slider 54. The descending distance is greater than the moving distance required for the bearing to be pressed into the rotor. At this time, the Z-axis pressing mechanism 6 descends to press the rotor and the bearings on both sides into place. After the pressing is completed, the Z-axis pressing mechanism 6 is reset, the two-finger clamping cylinder 52 is opened, and the Z-axis servo module 55 rises back to the origin with the rotor V-shaped positioning block 51, and the X-axis horizontal moving cylinder 57 returns to the origin.

[0036] The Z-axis pressing mechanism 6 includes a mounting plate mounted on the device body 2, an electric servo press module 61 is mounted on the mounting plate, a Z-axis linear guide sleeve 2 62 is mounted on the mounting plate, a Z-axis linear guide rod is slidably mounted in the Z-axis linear guide sleeve 2 62, one end of the Z-axis linear guide rod passes through the Z-axis linear guide sleeve 2 62 and is mounted with an assembly plate, the other end of the Z-axis linear guide rod passes through the Z-axis linear guide sleeve 2 62 and is mounted with a connecting plate 2 68, the electric servo press module 61 The output end of the pressure sensor 63 is installed through the mounting plate. The model of the pressure sensor (63) is F2822-0T-7T. The lower end of the pressure sensor 63 is connected to the upper end of the connecting plate 2 68. The lower end of the connecting plate 2 68 is provided with a dovetail slot 65. The right end of the connecting plate 2 68 is provided with a sleeve switching cylinder 64. The sleeve switching cylinder 64 extends or retracts to drive different types of sleeves to be in the center position of the press fitting. The output end of the sleeve switching cylinder 64 is installed There is a pressing sleeve connecting block 66, which can move left and right in the dovetail slide 65, and a pressing sleeve 67 is installed at the lower end of the pressing sleeve connecting block 66; the rotor and the bearings at both ends are pressed, and the pressing force and pressing size are monitored in real time during the pressing process. After the product tray carrier 3 arrives at the inside of the equipment, the automatic assembly line 1 automatically detects and reads the content of the RFID chip 36 and transmits it to the PLC. The PLC analyzes the read content and gives subsequent instructions. The pressing sleeve switching cylinder 64 selects the corresponding pressing sleeve 67 according to the instruction given by the PLC. The electric servo press module 61 then drives the pressing sleeve 67 to descend along the Z-axis linear guide sleeve 2 62 according to the action instruction of the PLC and cooperates with the rotor positioning and transplanting mechanism 5 to complete the pressing of the rotor and the bearings on both sides, that is, the rotor finished product pressing. All mechanisms are reset, and the product tray carrier 3 falls into the automatic assembly line 1 and continues to flow to the next workstation. During pressing, the pressure sensor 63 monitors the pressure data parameters in real time, and the electric servo monitors the descending stroke and torque feedback in real time.

[0037] The specific implementation method is as follows: the operation of the equipment is controlled by PLC, and all action instructions and signal interactions are received and issued by PLC. At the same time, the equipment also includes MES system and permission management system. The MES system writes the current product information into RFID. After the equipment reads the RFID product information, it produces according to the corresponding parameters. The permission management system is used to set the permission to operate the equipment. Only authorized registered personnel can operate. The permission management system improves the security of equipment operation. Its workflow is as follows:

[0038] S1: The robot vertically places the rotor required for production into the rotor fixture 33, with the upper bearing pre-mounted on the outer ring of the rotor upper shaft body, and the lower bearing and front end cover are also positioned in the corresponding fixture positions. The front end cover is prevented from rotating by the front end cover positioning pin 35 and the positioning through hole on the front end cover. Then, the product information is recorded into the RFID chip 36. The automatic assembly line 1 automatically detects and reads the content of the RFID chip 36, and releases the product tray carrier 3 to the next station;

[0039] S2: After the product tray carrier 3 is in place, the RFID reader inside the equipment body 2 reads the information from the RFID chip 36 and sends the obtained information to the PLC for information processing. The Z-axis lifting cylinder 42 extends, driving the tray carrier support plate 43, tray carrier positioning pins 44, and upper unloading force support block 45 to rise vertically along the guide Z-axis linear guide sleeve 48. The tray carrier positioning pins 44 are positioned on the four positioning guide sleeves 32 on the product tray carrier 3, and the tray carrier is lifted off the automatic assembly line 1 to a certain height.

[0040] S3: The horizontal extension cylinder 47 extends, driving the linear sliders 49 connected to both ends of the horizontal extension cylinder 47 and the lower unloading force support block 46 to open outward. At this time, the lower unloading force support block 46 moves to the bottom of the upper unloading force support block 45.

[0041] S4: The reverse unloading force of the Z-axis lifting cylinder 42 is caused by gravity to make the upper unloading force support block 45 contact the lower unloading force support block 46, so that the force applied to the upper tray carrier support plate 43 during press-fitting is transmitted from the upper unloading force support block 45 to the lower unloading force support block 46, then to the support base plate 41, and finally to the interior of the equipment body 2;

[0042] S5: After the product tray carrier 3 is in place and lifted to unload the force, the Z-axis servo module 55 drives the two-finger clamping cylinder 52 connected to the Z-direction linear slider 54 to simultaneously descend to the set height. The two-finger clamping cylinder 52 closes, and the rotor V-shaped positioning block 51 installed on the two-finger clamping cylinder 52 clamps and positions the rotor, so that the rotor maintains the Z-axis vertical state;

[0043] S6: The Z-axis servo module 55 drives the two-finger clamping cylinder 52 to rise to the set safety height, so that the rotor is separated from the product tray carrier 3;

[0044] S7: The X-axis horizontal moving cylinder 57 is actuated to move the rotor to the position directly above the bearing to be installed, i.e., the Z-axis axis center position of the Z-axis press-fitting mechanism 6;

[0045] S8: The Z-axis servo module 55 drives the rotor to descend, and pre-installs the rotor shaft at one end into the lower bearing, so that the rotor shaft contacts the lower bearing;

[0046] S9: After the rotor shaft contacts the lower bearing, the Z-axis servo module 55 continues to descend with the Z-direction linear slider 54. The descending distance is greater than the moving distance required for the bearing to be pressed into the rotor.

[0047] S10: At this time, the Z-axis press-fitting mechanism 6 descends to press-fit the rotor and the bearings on both sides into place. After the press-fitting is completed, the Z-axis press-fitting mechanism 6 resets, the two-finger clamping cylinder 52 opens, the Z-axis servo module 55 and the rotor V-shaped positioning block 51 rise back to the origin, and the X-axis horizontal moving cylinder 57 returns to the origin;

[0048] S11: The pressing sleeve switching cylinder 64 selects the corresponding pressing sleeve 67 according to the instruction given by the PLC;

[0049] S12: The electric servo press module 61 drives the press sleeve 67 to descend along the Z-axis linear guide sleeve 2 62 according to the action command of the PLC and cooperates with the rotor positioning and transfer mechanism 5 to complete the press assembly of the rotor and the bearings at both ends. The press assembly of the finished rotor is completed. All mechanisms are reset, and the product tray carrier 3 falls into the automatic assembly line 1 and continues to flow to the next station. During the press assembly, the pressure sensor 63 monitors the pressure data parameters in real time, and the electric servo monitors the descending stroke and torque feedback in real time.

[0050] S1-S12 completes the press-fitting of the rotor and the bearings at both ends, that is, the press-fitting of the finished rotor is completed, and S1-S12 is repeated to complete the press-fitting of the finished rotor and the front end cover. The difference between the press-fitting of the finished rotor and the front end cover and the press-fitting of the rotor and the bearings at both ends is that: the rotor V-shaped positioning block 51 in S5 no longer clamps the rotor but the finished rotor with bearings installed, and the X-axis horizontal moving cylinder 57 in S7 needs to act simultaneously with the Y-axis horizontal moving cylinder 59 to move the rotor to the Z-axis axis center position just above the bearing to be installed, that is, the Z-axis axis center position of the Z-axis press-fitting mechanism 6.

[0051] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully automatic press-fitting device for a motor rotor, bearings at both ends and a front end cover, comprising two equipment bodies (2), characterized in that: An automatic assembly line (1) is installed inside the equipment body (2), and the two ends of the automatic assembly line (1) pass through the two equipment bodies (2). A product tray carrier (3) is installed on the automatic assembly line (1), and a lifting and unloading mechanism (4) is installed on the equipment body (2). The lifting and unloading mechanism (4) is located below the product tray carrier (3). A rotor positioning and transplanting mechanism (5) is installed inside the equipment body (2), and the rotor positioning and transplanting mechanism (5) is located on both sides of the automatic assembly line (1). A Z-axis pressing mechanism (6) is also installed on the equipment body (2), and the Z-axis pressing mechanism (6) is located above the product tray carrier (3); The automatic assembly line (1) is used for automatically circulating product tray carriers (3); The product tray carrier (3) is used to place the rotor, bearings and front end cover; The lifting and unloading mechanism (4) is used for automatically detecting the position of the product tray carrier, lifting it off the automatic assembly line (1) to a certain height and unloading the force; The rotor positioning and transplanting mechanism (5) is used to position the rotor and transplant it to the Z-axis axis center position of the Z-axis pressing mechanism (6); The Z-axis press-fitting mechanism (6) is used to press-fit the rotor and the bearings at both ends, and to monitor the press-fitting force and press-fitting dimensions in real time during the press-fitting process; The lifting and unloading mechanism (4) includes a supporting base plate (41) mounted on the equipment body (2), a Z-axis lifting cylinder (42) is mounted in the middle of the supporting base plate (41), a pallet carrier supporting plate (43) is mounted at the output end of the Z-axis lifting cylinder (42), four pallet carrier positioning pins (44) are mounted symmetrically on the center of the pallet carrier supporting plate (43), an upper unloading support block (45) is mounted on each side of the lower end of the pallet carrier supporting plate (43), and a linear slider (49) is slidably mounted on each left and right side of the supporting base plate (41). A lower unloading force support block (46) is installed on the linear slider (49), a horizontal extension cylinder (47) is installed on the lower end of the support base plate (41), and the output ends of the horizontal extension cylinder (47) are respectively connected to the corresponding linear sliders (49), and four Z-axis linear guide sleeves (48) are symmetrically installed on the support base plate (41), and a Z-axis linear guide rod is slidably installed in the Z-axis linear guide sleeve (48), one end of the Z-axis linear guide rod passes through the Z-axis linear guide sleeve (48) and is installed with a flat plate, and the other end of the Z-axis linear guide rod is connected to the lower end of the pallet carrier support plate (43).

2. The fully automatic press-fitting device for a motor rotor, bearings at both ends, and a front end cover according to claim 1, characterized in that: The product tray carrier (3) includes a carrier base plate (31) installed on the automatic assembly line (1), four positioning guide sleeves (32) are symmetrically arranged on the center of the carrier base plate (31), a rotor tool (33) and a bearing positioning tool (34) are installed on the left and right sides of the carrier base plate (31), and the two rotor toolings (33) and the two bearing positioning toolings (34) are all arranged diagonally. A front cover positioning pin (35) is installed in the middle position of the carrier base plate (31), and the front cover positioning pin (35) is used for positioning and steering the product tray carrier (3). An RFID chip (36) is installed at the right end of the carrier base plate (31), and the RFID chip (36) is used for entering product information and automatic detection of the automatic assembly line (1).

3. The fully automatic press-fitting device for a motor rotor, bearings at both ends, and a front end cover according to claim 2, characterized in that: The tray carrier positioning pins (44) are used to position the four positioning guide sleeves (32) on the product tray carrier (3).

4. The fully automatic press-fitting device for a motor rotor, bearings at both ends, and a front end cover according to claim 1, characterized in that: The rotor positioning and transplanting mechanism (5) includes a transplanting mechanism base plate (510) mounted on the equipment body (2), a Y-axis horizontal moving cylinder (59) and a pair of slide rails (1) mounted on the transplanting mechanism base plate (510), a Y-axis moving connecting plate (58) slidably mounted on the slide rail (1), one end of the Y-axis moving connecting plate (58) is connected to the output end of the Y-axis horizontal moving cylinder (59), an X-axis horizontal moving cylinder (57) is mounted on one side of the Y-axis moving connecting plate (58), and a pair of slide rails (2) are mounted on the other side of the Y-axis moving connecting plate (58), and a Y-axis horizontal moving cylinder (57) is mounted on the other side of the Y-axis moving connecting plate (58). An X-axis movable connecting plate (56) is installed, one end of the X-axis movable connecting plate (56) is connected to the output end of the X-axis horizontal movable cylinder (57), a Z-axis servo module (55) is installed on the X-axis movable connecting plate (56), a Z-axis linear slider (54) is movably installed on the Z-axis servo module (55), a connecting plate 1 (53) is installed on the Z-axis linear slider (54), a two-finger clamping cylinder (52) is installed on the side of the connecting plate 1 (53) away from the Z-axis linear slider (54), and a rotor V-shaped positioning block (51) is installed on the clamping end of the two-finger clamping cylinder (52).

5. The fully automatic press-fitting device for a motor rotor, bearings at both ends, and a front end cover according to claim 1, characterized in that: The Z-axis pressing mechanism (6) includes a mounting plate mounted on the device body (2), an electric servo press module (61) is mounted on the mounting plate, a Z-axis linear guide sleeve 2 (62) is mounted on the mounting plate, a Z-axis linear guide rod is slidably mounted in the Z-axis linear guide sleeve 2 (62), one end of the Z-axis linear guide rod passes through the Z-axis linear guide sleeve 2 (62) and is mounted with an assembly plate, the other end of the Z-axis linear guide rod passes through the Z-axis linear guide sleeve 2 (62) and is mounted with a connecting plate 2 (68), the electric servo press module (61) The output end of the pressure sensor (63) is installed through the mounting plate, the lower end of the pressure sensor (63) is connected to the upper end of the connecting plate 2 (68), the lower end of the connecting plate 2 (68) is provided with a dovetail slot (65), the right end of the connecting plate 2 (68) is installed with a pressing sleeve switching cylinder (64), the output end of the pressing sleeve switching cylinder (64) is installed with a pressing sleeve connecting block (66), the pressing sleeve connecting block (66) can move left and right in the dovetail slot (65), and the lower end of the pressing sleeve connecting block (66) is installed with a pressing sleeve (67).

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