Rotor core lamination locking device

Abstract

The utility model discloses a rotor core overlying locking device, which relates to the technical field of permanent magnet synchronous motors of new energy automobiles and comprises a base and a first cylinder, a support is mounted on the base, the top of the support is connected with a top plate, and the first cylinder is mounted on the base. Two parallel sliding rails are installed at the positions, under the support, of the base, the movable end of the first air cylinder is connected with a movable base, the bottom of the movable base is connected with two pairs of sliding blocks, and the two pairs of sliding blocks are connected with the two sliding rails in a sliding mode respectively. According to the utility model, in the lamination process of the rotor cores, the cores are compressed layer by layer to ensure that the cores are attached in place, in the nut tightening process, press fitting and nut tightening are synchronous to ensure the assembly thickness after locking, and the two procedures of lamination compression and locking are automatically performed by the equipment, so that the operation difficulty and strength of staff are reduced, and the production efficiency is improved. And the product percent of pass is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of permanent magnet synchronous motors for new energy vehicles, in particular to a rotor core stacking and locking device. Background Technique

[0002] The core technology of new energy vehicles is the design and manufacture of drive motor controllers. In the production and manufacture of drive assemblies, at present, major domestic suppliers have basically achieved fully automatic or semi-automatic assembly. However, there are still a few processes that need to be completed manually (such as greasing splines, connecting signal wire harnesses, and performing electrical performance tests, etc.), resulting in a low quality control level and being unable to meet the quality requirements of customers.

[0003] Among them, when producing the rotor for a permanent magnet synchronous motor of a new energy vehicle, the rotor core needs to be stacked on the rotating shaft. To ensure that the rotor rotates at high speed in the motor, a nut needs to be used to fasten between the rotor core and the rotating shaft. The existing process is mostly to directly lock the nut after the rotor core stacking is completed. Although the torque of the nut can reach the standard, there are gaps between multiple layers of rotor cores, and the stacking effect and thickness of the locked assembly cannot be guaranteed to be consistent. There will be differences in the height of the product assembly, which is likely to cause poor product noise. Therefore, a rotor core stacking and locking device is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problems mentioned in the above background technique, and a rotor core stacking and locking device is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A rotor core stacking and locking device includes a base and a first cylinder. A bracket is installed on the base, the top of the bracket is connected with a top plate, the first cylinder is installed on the base, two parallel sliding rails are installed at a position directly below the bracket on the base, the movable end of the first cylinder is connected with a moving seat, the bottom of the moving seat is connected with two pairs of sliders, and the two pairs of sliders are respectively slidably connected with the two sliding rails. The top of the moving seat is connected with a mounting seat for placing the rotor core, and a pressing and locking mechanism is installed on the top plate.

[0007] Preferably, the pressing and locking mechanism includes a second cylinder, which is installed on the top plate. Four sliding rods are slidably connected through the top plate. The lower ends of the four sliding rods are jointly connected to a lifting plate. The movable end of the second cylinder penetrates the top plate and is connected to the lifting plate. The bottom of the lifting plate is slidably connected to a moving plate. A third cylinder is installed on the side of the lifting plate, and the movable end of the third cylinder is connected to the moving plate. Four connecting rods are connected to the bottom surface of the moving plate, and the lower ends of the four connecting rods are jointly connected to a pressing plate, and a pressing hole is formed in the pressing plate.

[0008] Preferably, a fixing plate is jointly connected to the middle positions of the four connecting rods. A connecting shaft and a main shaft are rotatably connected to the fixing plate. A gearbox is connected to the bottom of the fixing plate. A motor is installed on the outer wall of the bottom of the gearbox, and the output shaft of the motor is connected to the input end of the gearbox. The output end of the gearbox is connected to the connecting shaft. A gear is coaxially connected to the upper ends of the connecting shaft and the main shaft respectively. A toothed belt is sleeved on the two gears. A locking hole is formed in the pressing plate, and the locking hole is coaxially arranged with the main shaft. A locking head is coaxially connected to the lower end of the main shaft.

[0009] Preferably, a torque sensor is arranged on the locking head to control the shutdown of the motor.

[0010] Preferably, an installation hole is formed in the mounting seat for placing the rotor shaft, and the aperture of the pressing hole is slightly larger than the aperture of the installation hole.

[0011] In the present utility model, compared with the prior art, the advantages are as follows:

[0012] During the stacking process of the rotor core in the present utility model, each layer of the iron core is pressed layer by layer to ensure that each layer of the iron core is in place. During the tightening process of the nut, press-fitting is synchronized with the tightening of the nut to ensure the thickness of the assembled component after locking. Moreover, both the stacking and pressing and the locking processes are automatically performed by the equipment, which not only reduces the operation difficulty and intensity of workers but also improves the product qualification rate. Description of the Drawings

[0013] Figure 1 is a structural schematic diagram of the present utility model.

[0014] Figure 2 is a structural schematic diagram of another angle of the present utility model.

[0015] Figure 3 is a structural schematic diagram of the pressing and locking mechanism part of the present utility model.

[0016] Figure 4 is a structural schematic diagram of another angle of the pressing and locking mechanism part of the present utility model.

[0017] In the figure: 1 base, 11 bracket, 12 top plate, 2 first cylinder, 21 slide rail, 22 moving seat, 23 slider, 24 mounting seat, 3 second cylinder, 31 slide bar, 32 lifting plate, 33 moving plate, 34 third cylinder, 35 connecting rod, 36 pressing plate, 37 pressing hole, 38 locking hole, 4 motor, 41 fixing plate, 42 connecting shaft, 43 main shaft, 44 gearbox, 45 gear, 46 toothed belt, 47 locking head. Detailed implementation mode

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] Refer to Figures 1-4 As shown in the figure, a rotor core stacking and locking device includes a base 1 and a first cylinder 2. A bracket 11 is installed on the base 1, the top of the bracket 11 is connected to a top plate 12, the first cylinder 2 is installed on the base 1, two parallel slide rails 21 are installed at a position directly below the bracket 11 on the base 1, the movable end of the first cylinder 2 is connected to a moving seat 22, the bottom of the moving seat 22 is connected to two pairs of sliders 23, and the two pairs of sliders 23 are respectively slidably connected to the two slide rails 21. The top of the moving seat 22 is connected to a mounting seat 24 for placing the rotor core, and a pressing and locking mechanism is installed on the top plate 12.

[0020] In this embodiment, the pressing and locking mechanism includes a second cylinder 3. The second cylinder 3 is installed on the top plate 12. Four slide bars 31 are slidably connected through the top plate 12. The lower ends of the four slide bars 31 are jointly connected to a lifting plate 32. The movable end of the second cylinder 3 penetrates the top plate 12 and is connected to the lifting plate 32. The bottom of the lifting plate 32 is slidably connected to a moving plate 33. A third cylinder 34 is installed on the side of the lifting plate 32. The movable end of the third cylinder 34 is connected to the moving plate 33. Four connecting rods 35 are connected to the bottom surface of the moving plate 33. The lower ends of the four connecting rods 35 are jointly connected to a pressing plate 36. A pressing hole 37 is provided on the pressing plate 36.

[0021] In this embodiment, a fixing plate 41 is commonly connected to the middle positions of the four connecting rods 35. A connecting shaft 42 and a main shaft 43 are rotatably connected to the fixing plate 41. A gearbox 44 is connected to the bottom of the fixing plate 41. An electric motor 4 is installed on the outer wall of the bottom of the gearbox 44. The output shaft of the electric motor 4 is connected to the input end of the gearbox 44. The output end of the gearbox 44 is connected to the connecting shaft 42. A gear 45 is coaxially connected to the upper end of each of the connecting shaft 42 and the main shaft 43. A toothed belt 46 is commonly sleeved on the two gears 45. A locking hole 38 is formed in the pressing plate 36. The locking hole 38 is coaxially arranged with the main shaft 43. And a locking head 47 is coaxially connected to the lower end of the main shaft 43. The gearbox 44 is used to reduce the output speed of the electric motor 4 and increase the output torque.

[0022] In this embodiment, a torque sensor is arranged on the locking head 47 to control the shutdown of the electric motor 4. When the torque reaches the threshold value, it indicates that the nut has been tightened, and the electric motor 4 is controlled to stop.

[0023] In this embodiment, an installation hole is formed in the mounting seat 24 for placing the rotor shaft. The aperture of the pressing hole 37 is slightly larger than the aperture of the installation hole.

[0024] Working process and principle:

[0025] During use, the shaft of the rotor is inserted into the installation hole of the mounting seat 24. The program controls the third cylinder 34 to push the moving plate 33 to slide, so that the pressing hole 37 on the pressing plate 36 is on the same axis as the rotor shaft. The rotor cores to be installed are stacked layer by layer on the rotor shaft. After each layer of rotor core is stacked, the second cylinder 3 is started to push the pressing plate 36 to descend to press the rotor core once. When all the rotor cores are stacked, the nut is placed on the rotor shaft. At the same time, the program controls the third cylinder 34 to pull the moving plate 33 to slide, so that the locking hole 38 on the pressing plate 36 is on the same axis as the rotor shaft. After the second cylinder 3 pushes the pressing plate 36 to press down, the electric motor 4 is started to drive the main shaft 43 to rotate, and the locking head 47 is controlled to tighten the nut. Since the pressing plate 36 always keeps pressing down on the rotor core during the tightening process, the thickness of the assembled component after locking is ensured. After the locking nut is installed and tightened, through the push of the first cylinder 2, it is convenient to take out the processed product and replace it with the stacking of the next rotor core.

[0026] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent replacements or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A rotor core stacking locking device, characterized in that: The invention comprises a base (1) and a first cylinder (2), wherein a bracket (11) is mounted on the base (1), the top of the bracket (11) is connected to a top plate (12), the first cylinder (2) is mounted on the base (1), two parallel slide rails (21) are mounted on the base (1) directly below the bracket (11), the movable end of the first cylinder (2) is connected to a moving seat (22), the bottom of the moving seat (22) is connected to two pairs of slide blocks (23), the two pairs of slide blocks (23) are respectively slidably connected to the two slide rails (21), the top of the moving seat (22) is connected to a mounting seat (24) for placing a rotor core, and a locking mechanism is mounted on the top plate (12).

2. A rotor core stacking locking device according to claim 1, characterized in that: The locking mechanism comprises a second cylinder (3), which is mounted on a top plate (12). Four sliding rods (31) are slidably connected to the top plate (12). The lower ends of the four sliding rods (31) are commonly connected to a lifting plate (32). The movable end of the second cylinder (3) is connected to the lifting plate (32) through the top plate (12). The bottom of the lifting plate (32) is slidably connected to a moving plate (33). A third cylinder (34) is mounted on the side of the lifting plate (32). The movable end of the third cylinder (34) is connected to the moving plate (33). The bottom surface of the moving plate (33) is connected to four connecting rods (35). The lower ends of the four connecting rods (35) are commonly connected to a pressing plate (36). A pressing hole (37) is provided on the pressing plate (36).

3. A rotor core stacking locking device according to claim 2, characterized in that: The middle sections of the four connecting rods (35) are commonly connected to a fixing plate (41), and a connecting shaft (42) and a main shaft (43) are rotatably connected to the fixing plate (41). The bottom of the fixing plate (41) is connected to a gearbox (44), and a motor (4) is installed on the bottom outer wall of the gearbox (44). The output shaft of the motor (4) is connected to the input end of the gearbox (44), and the output end of the gearbox (44) is connected to the connecting shaft (42). The upper ends of the connecting shaft (42) and the main shaft (43) are coaxially connected with a gear (45), and two of the gears (45) are commonly sleeved with a toothed belt (46). A locking hole (38) is opened on the pressing plate (36), and the locking hole (38) is coaxially arranged with the main shaft (43), and the lower end of the main shaft (43) is coaxially connected with a locking head (47).

4. A rotor core stacking locking device according to claim 3, characterized in that: The locking head (47) is provided with a torque sensor for controlling the closing of the motor (4).

5. The rotor core stacking locking device according to claim 2, characterized in that: The mounting seat (24) is provided with a mounting hole for placing the rotor shaft, and the diameter of the pressing hole (37) is slightly larger than the diameter of the mounting hole.

Images