Rotor lamination assembling equipment for motor processing
By designing a rotor laminate assembly equipment for motor processing, the cylinder and transmission mechanism are used to increase the guide bar insertion speed, and combining the push mechanism of the cylinder and guide groove to ensure accurate insertion of the guide bar, solving the problems of low assembly efficiency and loose guide bar in the prior art, and improving the performance and reliability of the motor.
Patent Information
- Application Number
- CN202510308891.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2025-05-23
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the prior art, the gap between the rotor guide bar and the installation hole is small, the insertion speed is slow, which affects the assembly efficiency; at the same time, the knocking force and angle are difficult to control, which easily causes the guide bar to scratch, resulting in looseness or deviation, and affects the performance of the motor.
A rotor laminate assembly equipment for motor processing is designed, including a base, a dust cover, an assembly mechanism, a transmission mechanism and a push mechanism. The assembly mechanism pushes the rotation shaft to slide through the first cylinder, and combines the moving rod and the roller to achieve the flip and intermittent rotation of the rotor laminate, thereby increasing the insertion speed of the guide bar. The push mechanism uses the second cylinder and guide groove to accurately push the guide bar to avoid scratches and offsets.
It improves the efficiency of rotor laminate assembly, ensures accurate insertion of guide bars, avoids loosening or offset, and improves the performance and reliability of the motor.
Smart Images

Figure CN120033923A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of motor processing, and in particular to rotor lamination assembly equipment for motor processing. Background Art
[0002] The motor rotor, as the name implies, is the part of the motor that is responsible for rotation. It is usually composed of core components such as rotor laminations, shafts, and commutators. The assembly of the motor rotor is the core link in the motor manufacturing process, involving multiple key steps and delicate operations. During the assembly process, the cleanliness of the components must be maintained to prevent dust and impurities from entering the rotor, which would affect the performance and life of the rotor.
[0003] The rotor laminations are formed by punching and laminating multiple silicon steel sheets. Not only does the rotating shaft need to be fixed in the middle, but multiple rotor bars also need to be inserted into the corresponding mounting holes on the rotor laminations in sequence. Since the gap between the rotor bars and the mounting holes is small, the speed of inserting the rotor bars into the mounting holes is slow, which affects the assembly efficiency of the rotor laminations. At the same time, during the installation process, a rubber hammer is needed to knock with appropriate force, but the force and angle of the knocking are difficult to control, which can easily cause scratches on the outer wall of the rotor bars, causing the rotor bars to loosen or shift in the mounting holes, affecting the performance of the motor. Summary of the invention
[0004] The technical problems solved by this solution are:
[0005] (1) How to solve the problem that the speed of inserting the rotor bars into the mounting holes is slow due to the small gap between the rotor bars and the mounting holes, which affects the efficiency of rotor lamination assembly;
[0006] (2) How to solve the problem that the force and angle of the knocking are difficult to control, which easily causes scratches on the rotor bars, causing the rotor bars to loosen or shift in the mounting holes, affecting the performance of the motor.
[0007] The object of the present invention can be achieved by the following technical scheme: a rotor lamination assembly device for motor processing, comprising a base and a dust cover fixedly mounted on the top thereof, an assembly mechanism for mounting a rotating shaft on the rotor lamination is arranged inside the dust cover, a transmission mechanism for driving the rotor lamination to flip is arranged above the assembly mechanism, and a pushing mechanism for mounting rotor bars on the rotor lamination is arranged on one side of the assembly mechanism;
[0008] The assembly mechanism includes a placement table for placing rotor laminations, a feeding unit for pushing the rotating shaft is arranged on one side of the placement table, and guide rods are fixedly installed at the four corners of the bottom of the placement table, and the bottom end of the guide rod movably passes through the base.
[0009] A further technical improvement of the present invention is that a support seat for supporting one end of the rotating shaft is fixedly installed on the top of the placing table, and two clamping blocks for positioning the rotor laminations are also fixedly installed on the placing table.
[0010] A further technical improvement of the present invention is that the feeding unit includes a mounting plate fixedly connected to the base through a vertical plate, a first guide groove for guiding the rotating shaft is fixedly installed on the top of the mounting plate, a fixed seat is fixedly arranged on the mounting plate on one side of the first guide groove, and a first cylinder arranged horizontally is fixedly arranged on the fixed seat; the position of the extended end of the first cylinder corresponds to the position of the rotating shaft, and a shift rod is fixedly inserted into the extended end of the first cylinder.
[0011] A further technical improvement of the present invention is that a guide plate is fixedly installed on the base, two movable rods are movably inserted in the middle of the guide plate, one end of the two movable rods are connected to rollers for common rotation, a trapezoidal block is fixedly installed on the bottom of the display table, and the roller is rollingly connected to the trapezoidal block.
[0012] A further technical improvement of the present invention is that: the end of the moving rod away from the roller movably penetrates the vertical plate, and a baffle is fixedly installed in the middle of the moving rod, and a thrust spring is elastically arranged between the baffle and the vertical plate.
[0013] A further technical improvement of the present invention lies in that: an L-shaped plate is rotatably provided on the front and rear end surfaces of the mounting plate, the tops of the two L-shaped plates respectively correspond to the positions of the two ends of the shift rod, and the middle parts of the two moving rods are fixedly installed with a fixing pin, and the two fixing pins are movably connected to the bottoms of the two L-shaped plates respectively; by controlling the extension of the extended end of the first cylinder, the rotating shaft is pushed to slide in the first guide groove so that one end of the rotating shaft passes through the middle part of the rotor laminations, and when the extended end of the first cylinder is at a set length, the two ends of the shift rod respectively contact the tops of the two L-shaped plates. At this time, one end of the rotating shaft is located on the support seat, and the extended end of the first cylinder is continued to be controlled to extend to the longest, and one end of the rotating shaft is still located on the support seat. On the support seat, the two L-shaped plates are turned over by the lever, thereby cooperating with the fixed pin to drive the moving rod to move, so that the roller rolls from the side of the trapezoidal block away from the display table to its inclined surface. Due to the influence of gravity, the display table moves downward. Since one end of the rotating shaft is located on the support seat and the other end is located on the first guide groove, the rotor stack is supported by the rotating shaft, so that the rotor stack is separated from the display table, and then the extended end of the hydraulic cylinder is controlled to extend to the longest. At this time, the rubber roller is in close contact with the rotor stack, and the servo motor is turned on. The rotor stack is driven to rotate intermittently by the rubber roller, which is convenient for the subsequent pushing of the rotor guide bar into the rotor stack mounting hole by the feeding rod, thereby improving the efficiency of the rotor stack assembly.
[0014] A further technical improvement of the present invention is that the transmission mechanism includes a hydraulic cylinder fixedly inserted on the top of the dust cover, the hydraulic cylinder is longitudinally arranged, and a movable plate is fixedly installed on the protruding end of the hydraulic cylinder, and the back side of the movable plate is slidably connected to the inner wall of the dust cover through two guide rails.
[0015] A further technical improvement of the present invention is that a support plate is fixedly installed on the front side of the movable plate, a servo motor is fixedly installed on the top of the support plate, a rubber roller is fixedly installed on the output end of the servo motor, and one end of the rubber roller is rotatably connected to the front side of the movable plate.
[0016] A further technical improvement of the present invention is that: the pushing mechanism includes a second cylinder fixedly mounted on the inner wall of the dust cover, the second cylinder is arranged horizontally, and a feeding rod is fixedly mounted on the protruding end of the second cylinder, a support frame is fixedly mounted on the inner wall of the dust cover, and a second guide groove for guiding the rotor guide bars is fixedly mounted on the top of the support frame; the protruding end of the second cylinder is extended, and the position of the rotor guide bars is limited by the second guide groove to avoid changes in the angle of pushing the rotor guide bars, so that the rotor guide bars can accurately enter the corresponding mounting holes on the rotor laminations, and the thrust of the protruding end of the second cylinder during the extension process is relatively moderate, so as to avoid scratching the rotor guide bars during the process of pushing them into the corresponding mounting holes on the rotor laminations, and prevent the rotor guide bars from loosening or shifting therein, thereby affecting the performance of the motor.
[0017] Compared with the prior art, the present invention has the following beneficial effects:
[0018] When the present invention is in use, the extension of the extended end of the first cylinder is controlled to push the rotating shaft to slide in the first guide groove, so that one end of the rotating shaft passes through the middle of the rotor lamination. When the extended end of the first cylinder is at a set length, the two ends of the lever contact the tops of the two L-shaped plates respectively. At this time, one end of the rotating shaft is located on the support seat, and the extended end of the first cylinder is continuously controlled to extend to the longest. One end of the rotating shaft is still located on the support seat, and the two L-shaped plates are turned over by the lever, so as to cooperate with the fixed pin to drive the moving rod to move, so that the roller rolls from the side of the trapezoidal block away from the placing table to its inclined surface. Due to the influence of gravity, the placing table moves downward. Since one end of the rotating shaft is located on the supporting seat and the other end is located on the first guide groove, the rotor lamination is supported by the rotating shaft, so that the rotor lamination is separated from the placing table, and then the extended end of the hydraulic cylinder is controlled to extend to the longest. At this time, the rubber roller is in close contact with the rotor lamination, and the servo motor is turned on. The rotor lamination is driven to rotate intermittently through the rubber roller, which is convenient for the subsequent pushing of the rotor guide bar into the rotor lamination mounting hole by the feeding rod, thereby improving the efficiency of the rotor lamination assembly.
[0019] When the present invention is in use, the extended end of the second cylinder is extended, and the second guide groove cooperates with the limitation of the position of the rotor guide bar to avoid changes in the angle of pushing the rotor guide bar, so that the rotor guide bar can accurately enter the corresponding installation hole on the rotor lamination, and the thrust of the extended end of the second cylinder during the extension process is relatively moderate, which avoids scratching of the rotor guide bar during the process of pushing it into the corresponding installation hole on the rotor lamination, and prevents the rotor guide bar from loosening or shifting therein, thereby affecting the performance of the motor. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.
[0021] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;
[0022] Figure 2 It is a cross-sectional view of the overall front structure of the present invention;
[0023] Figure 3 It is a schematic diagram of the assembly mechanism structure of the present invention;
[0024] Figure 4 It is a three-dimensional schematic diagram of the assembly mechanism structure of the present invention;
[0025] Figure 5 It is a schematic diagram of the transmission mechanism structure of the present invention;
[0026] Figure 6 It is a three-dimensional schematic diagram of the pushing mechanism structure of the present invention.
[0027] In the figure: 1. hydraulic cylinder; 2. dust cover; 3. first cylinder; 4. base; 5. opening and closing door; 6. transmission mechanism; 7. assembly mechanism; 8. second cylinder; 9. pushing mechanism; 601. rubber roller; 602. moving plate; 603. support plate; 604. servo motor; 701. block; 702. first guide groove; 703. mounting plate; 704. vertical plate; 705. moving rod; 706. guide plate; 707. guide rod; 708. trapezoidal block; 709. placing table; 710. support seat; 711. fixed seat; 712. lever; 713. baffle; 714. fixing pin; 715. roller; 716. L-shaped plate; 901. second guide groove; 902. support frame; 903. feeding rod. DETAILED DESCRIPTION
[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the 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.
[0029] See also Figure 1-Figure 6 As shown, a rotor lamination assembly device for motor processing includes a base 4 and a dust cover 2 fixedly installed on the top thereof, an assembly mechanism 7 for installing a rotating shaft for the rotor laminations is arranged inside the dust cover 2, a transmission mechanism 6 for driving the rotor laminations to flip is arranged above the assembly mechanism 7, and a pushing mechanism 9 for installing rotor guide bars for the rotor laminations is arranged on one side of the assembly mechanism 7.
[0030] See also Figure 2 and Figure 3 As shown, the above-mentioned assembly mechanism 7 includes a placement table 709 for placing rotor laminations, a feeding unit for pushing the rotating shaft is arranged on one side of the placement table 709, and guide rods 707 are fixedly installed at the four corners of the bottom of the placement table 709, and the bottom end of the guide rod 707 movably passes through the base 4.
[0031] See also Figure 3 As shown, a support seat 710 for supporting one end of the rotating shaft is fixedly installed on the top of the above-mentioned placing table 709, and two clamping blocks 701 for positioning the rotor laminations are also fixedly installed on the placing table 709.
[0032] See also Figure 3 and Figure 4 As shown, the above-mentioned feeding unit includes a mounting plate 703 fixedly connected to the base 4 through a vertical plate 704, a first guide groove 702 for guiding the rotating shaft is fixedly installed on the top of the mounting plate 703, a fixing seat 711 is fixedly arranged on the mounting plate 703 on one side of the first guide groove 702, and a first cylinder 3 arranged horizontally is fixedly arranged on the fixing seat 711.
[0033] See also Figure 4 As shown, the position of the extended end of the first cylinder 3 corresponds to the position of the rotating shaft, and a shifting rod 712 is fixedly inserted into the extended end of the first cylinder 3 .
[0034] See also Figure 3 and Figure 4 As shown, a guide plate 706 is fixedly installed on the above-mentioned base 4, two moving rods 705 are movably inserted in the middle of the guide plate 706, one end of the two moving rods 705 is connected to a roller 715 for rotation together, and a trapezoidal block 708 is fixedly installed on the bottom of the display table 709, and the roller 715 is rollingly connected to the trapezoidal block 708.
[0035] See also Figure 3 and Figure 4 As shown, one end of the moving rod 705 away from the roller 715 movably penetrates the vertical plate 704 , and a baffle 713 is fixedly installed in the middle of the moving rod 705 , and a thrust spring is elastically arranged between the baffle 713 and the vertical plate 704 .
[0036] See also Figure 4 As shown, the front and rear end surfaces of the above-mentioned mounting plate 703 are rotatably provided with L-shaped plates 716, and the tops of the two L-shaped plates 716 correspond to the positions of the two ends of the lever 712 respectively. The middle parts of the two moving rods 705 are fixedly installed with fixing pins 714, and the two fixing pins 714 are movably connected to the bottoms of the two L-shaped plates 716 respectively; by controlling the extension of the extended end of the first cylinder 3, the rotating shaft is pushed to slide in the first guide groove 702, so that one end of it passes through the middle part of the rotor laminations. When the extended end of the first cylinder 3 is at a set length, the two ends of the lever 712 contact the tops of the two L-shaped plates 716 respectively. At this time, one end of the rotating shaft is located on the support seat 710, and the extended end of the first cylinder 3 is continuously controlled to be extended to the longest, and one end of the rotating shaft is still located on the support seat 710. Through the lever 71 2 drives the two L-shaped plates 716 to flip, thereby cooperating with the fixing pin 714 to drive the moving rod 705 to move, so that the roller 715 rolls from the side of the trapezoidal block 708 away from the placing table 709 to its inclined surface. Due to the influence of gravity, the placing table 709 moves downward. Since one end of the rotating shaft is located on the support seat 710 and the other end is located on the first guide groove 702, the rotor stack is supported by the rotating shaft, so that the rotor stack is separated from the placing table 709. Then the extended end of the hydraulic cylinder 1 is controlled to extend to the longest. At this time, the rubber roller 601 is in close contact with the rotor stack, and the servo motor 604 is turned on. The rubber roller 601 drives the rotor stack to rotate intermittently, which is convenient for the subsequent pushing of the rotor guide bar into the rotor stack installation hole by the feeding rod 903, thereby improving the efficiency of the rotor stack assembly.
[0037] See also Figure 2 and Figure 5 As shown, the transmission mechanism 6 includes a hydraulic cylinder 1 fixedly inserted on the top of the dust cover 2, the hydraulic cylinder 1 is longitudinally arranged, and a movable plate 602 is fixedly installed on the protruding end of the hydraulic cylinder 1, and the back side of the movable plate 602 is slidably connected to the inner wall of the dust cover 2 through two guide rails.
[0038] See also Figure 5 As shown, a support plate 603 is fixedly installed on the front side of the above-mentioned movable plate 602, a servo motor 604 is fixedly installed on the top of the support plate 603, a rubber roller 601 is fixedly installed on the output end of the servo motor 604, and one end of the rubber roller 601 is rotatably connected to the front side of the movable plate 602.
[0039] See also Figure 2 and Figure 6As shown, the above-mentioned pushing mechanism 9 includes a second cylinder 8 fixedly mounted on the inner wall of the dust cover 2, the second cylinder 8 is arranged horizontally, and a feeding rod 903 is fixedly mounted on the protruding end of the second cylinder 8, a support frame 902 is fixedly mounted on the inner wall of the dust cover 2, and a second guide groove 901 for guiding the rotor guide bar is fixedly arranged on the top of the support frame 902; by extending the protruding end of the second cylinder 8 and limiting the position of the rotor guide bar by the second guide groove 901, the angle of pushing the rotor guide bar is avoided to change, so that the rotor guide bar can accurately enter the corresponding mounting hole on the rotor lamination, and the thrust of the protruding end of the second cylinder 8 during the extension process is relatively moderate, so as to avoid scratching the rotor guide bar during the process of pushing it into the corresponding mounting hole on the rotor lamination, and prevent the rotor guide bar from loosening or shifting therein, thereby affecting the performance of the motor.
[0040] See also Figure 2 As shown, one end of the second guide groove 901 corresponds to the position of one of the mounting holes of the rotor laminations, and the other end of the second guide groove 901 corresponds to the position of the feeding rod 903 .
[0041] See also Figure 1 As shown, the front side of the dust cover 2 is hinged with an opening and closing door 5.
[0042] Working principle: When the present invention is used, first, Figure 1 and Figure 3 As shown, open the opening and closing door 5, place the cleaned rotor laminations on the placing table 709, and limit the position of the rotor laminations by two clamping blocks 701. Figure 2 , Figure 3 and Figure 6 As shown, the extended ends of the two first cylinders 3 and the second cylinder 8 are at their shortest, and the rotating shaft and the rotor guide bar are placed on the first guide groove 702 and the second guide groove 901 respectively; Figure 3 and Figure 4 As shown, by controlling the extension of the extended end of the first cylinder 3, the rotating shaft is pushed to slide in the first guide groove 702, so that one end of the rotating shaft passes through the middle of the rotor lamination. When the extended end of the first cylinder 3 is at a set length, the two ends of the lever 712 are respectively in contact with the tops of the two L-shaped plates 716. At this time, one end of the rotating shaft is located on the support seat 710, and the extended end of the first cylinder 3 is continuously controlled to extend to the longest, and one end of the rotating shaft is still located on the support seat 710. The two L-shaped plates 716 are turned over by the lever 712, so as to cooperate with the fixing pin 714 to drive the moving rod 705 to move, so that the roller 715 rolls from the side of the trapezoidal block 708 away from the placing table 709 to its inclined surface. Due to the influence of gravity, the placing table 709 moves downward. Since one end of the rotating shaft is located on the supporting seat 710 and the other end is located on the first guide groove 702, the rotor lamination is supported by the rotating shaft, so that the rotor lamination is separated from the placing table 709. Figure 2 , Figure 3 and Figure 5 As shown, the extended end of the hydraulic cylinder 1 is controlled to extend to the longest. At this time, the rubber roller 601 is in close contact with the rotor laminations, and the servo motor 604 is turned on. The rubber roller 601 drives the rotor laminations to rotate intermittently, which facilitates the subsequent pushing of the rotor guide bars into the rotor lamination installation holes by the feeding rod 903, thereby improving the efficiency of the rotor lamination assembly; Figure 2 and Figure 6 As shown, the external loading equipment places the rotor guide bars into the second guide groove 901 in turn, and then extends the protruding end of the second cylinder 8, cooperating with the second guide groove 901 to limit the position of the rotor guide bars, to avoid changes in the angle of pushing the rotor guide bars, so that the rotor guide bars can accurately enter the corresponding mounting holes on the rotor laminations, and the thrust of the protruding end of the second cylinder 8 during the extension process is relatively moderate, so as to avoid scratching the rotor guide bars when they are pushed into the corresponding mounting holes on the rotor laminations, and prevent the rotor guide bars from loosening or shifting therein, thereby affecting the performance of the motor.
[0043] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A rotor lamination assembly device for motor processing, comprising a base (4) and a dust cover (2) fixedly mounted on the top of the base, characterized in that: An assembly mechanism (7) for installing a rotating shaft on the rotor laminations is arranged inside the dust cover (2); a transmission mechanism (6) for driving the rotor laminations to flip is arranged above the assembly mechanism (7); and a pushing mechanism (9) for installing rotor bars on the rotor laminations is arranged on one side of the assembly mechanism (7); The assembly mechanism (7) comprises a placing table (709) for placing rotor laminations, a feeding unit for pushing the rotating shaft is arranged on one side of the placing table (709), and guide rods (707) are fixedly installed at the four corners of the bottom of the placing table (709), and the bottom end of the guide rod (707) movably passes through the base (4).
2. The rotor lamination assembly equipment for motor processing according to claim 1, characterized in that: A support seat (710) for supporting one end of the rotating shaft is fixedly installed on the top of the placing table (709), and two clamping blocks (701) for positioning the rotor laminations are also fixedly installed on the placing table (709).
3. The rotor lamination assembly equipment for motor processing according to claim 1, characterized in that: The feeding unit comprises a mounting plate (703) fixedly connected to the base (4) via a vertical plate (704); a first guide groove (702) for guiding the rotating shaft is fixedly mounted on the top of the mounting plate (703); a fixing seat (711) is fixedly arranged on the mounting plate (703) on one side of the first guide groove (702); and a first cylinder (3) is fixedly mounted on the fixing seat (711); The position of the extended end of the first cylinder (3) corresponds to the position of the rotating shaft, and a shifting rod (712) is fixedly inserted into the extended end of the first cylinder (3).
4. The rotor lamination assembly equipment for motor processing according to claim 3, characterized in that: A guide plate (706) is fixedly mounted on the base (4); two movable rods (705) are movably inserted in the middle of the guide plate (706); one end of the two movable rods (705) is rotatably connected to a roller (715); a trapezoidal block (708) is fixedly mounted on the bottom of the placement table (709); and the roller (715) is rollingly connected to the trapezoidal block (708).
5. The rotor lamination assembly equipment for motor processing according to claim 4, characterized in that: One end of the moving rod (705) away from the roller (715) movably penetrates the vertical plate (704), and a baffle (713) is fixedly installed in the middle of the moving rod (705), and a thrust spring is elastically arranged between the baffle (713) and the vertical plate (704).
6. The rotor lamination assembly equipment for motor processing according to claim 4, characterized in that: L-shaped plates (716) are rotatably provided on both the front and rear end surfaces of the mounting plate (703), the tops of the two L-shaped plates (716) respectively correspond to the positions of the two ends of the shifting rod (712), and the middle parts of the two moving rods (705) are fixedly installed with fixing pins (714), and the two fixing pins (714) are movably connected to the bottoms of the two L-shaped plates (716) respectively.
7. The rotor lamination assembly equipment for motor processing according to claim 1, characterized in that: The transmission mechanism (6) comprises a hydraulic cylinder (1) fixedly inserted on the top of the dust cover (2), a movable plate (602) being fixedly mounted on the protruding end of the hydraulic cylinder (1), and the back side of the movable plate (602) being slidably connected to the inner wall of the dust cover (2).
8. The rotor lamination assembly equipment for motor processing according to claim 7, characterized in that: A support plate (603) is fixedly mounted on one side of the front face of the movable plate (602), a servo motor (604) is fixedly mounted on the top of the support plate (603), a rubber roller (601) is fixedly mounted on the output end of the servo motor (604), and one end of the rubber roller (601) is rotatably connected to the front face of the movable plate (602).
9. The rotor lamination assembly equipment for motor processing according to claim 1, characterized in that: The pushing mechanism (9) comprises a second cylinder (8) fixedly mounted on the inner wall of the dust cover (2), a feeding rod (903) fixedly mounted on the protruding end of the second cylinder (8), a support frame (902) fixedly mounted on the inner wall of the dust cover (2), and a second guide groove (901) for guiding the rotor guide bars fixedly arranged on the top of the support frame (902).