Automatic riveting device for motor rotor and control method thereof

Abstract

The present invention relates to the technical field of automated riveting of motor rotors, and in particular to an automated riveting device for motor rotors and a control method thereof, comprising a fixing seat and an integrated control box, wherein the upper end of the fixing seat is fixed with the integrated control box by welding a protective cover, a lifter is installed in the middle of the bottom end of the integrated control box, the bottom end of the lifter is fixedly connected with a riveted plate by bolts, a positioning platform is installed at the lower end of the riveted plate, a driving mechanism is fixedly connected to the movable end of the lifter, a supporting mechanism is installed on one side of the driving mechanism, a conveyor belt is installed on the outside of the supporting mechanism, the upper end of the conveyor belt is located between the riveted plate and the positioning platform, and a positioning mechanism is installed on the outside of the conveyor belt; the driving mechanism comprises a driving rod, and in the present invention, the automatic feeding mechanism can be assembled with the original riveting equipment, which solves the problems of manual operation, low work efficiency, and high investment cost of automated production equipment, and is more suitable for small processing plants.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic riveting of motor rotors, and in particular to an automatic riveting device for a motor rotor and a control method thereof. Background Art

[0002] The motor rotor automated riveting device is a device specifically designed for use on automated production lines to fix the various components of the motor rotor together by riveting. This device is very important in the motor manufacturing process because it can improve production efficiency and ensure product quality and consistency.

[0003] Automated riveting equipment for motor rotors plays an important role in the field of motor manufacturing, especially in electric vehicles, industrial motors and other industries that require high-efficiency and high-performance motors;

[0004] The existing automatic riveting device for motor rotors adopts manual loading or automatic loading mechanism to load the motor rotor when installing the motor rotor inside the protective shell by hot riveting. The manual loading method has low work efficiency and high labor cost. The automatic loading mechanism has high initial investment cost and is difficult to combine with the existing riveting device, resulting in the need to purchase a complete set of equipment and high production cost. Therefore, in order to solve the above problems, an automatic riveting device for motor rotors and a control method thereof are proposed. Summary of the Invention

[0005] The object of the present invention is to provide an automatic riveting device for a motor rotor and a control method thereof, so as to solve the problem that the existing automatic riveting device for a motor rotor adopts manual loading or an automatic loading mechanism to load the motor rotor when the motor rotor is installed inside a protective shell by hot riveting. The manual loading method has low work efficiency and high labor costs. The automatic loading mechanism has high initial investment costs and is difficult to combine with the existing riveting device, resulting in the need to purchase a complete set of equipment and the problem of high production costs.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An automatic riveting device for a motor rotor and a control method thereof, comprising a fixing seat and an integrated control box, wherein the upper end of the fixing seat is fixed with the integrated control box by welding through a protective cover, a lifter is installed in the middle of the bottom end of the integrated control box, the bottom end of the lifter is fixedly connected with a riveted plate by bolts, the lower end of the riveted plate is installed with a positioning platform, the movable end of the lifter is fixedly connected with a driving mechanism, a supporting mechanism is installed on one side of the driving mechanism, a conveyor belt is installed on the outside of the supporting mechanism, the upper end of the conveyor belt is located between the riveted plate and the positioning platform, and a positioning mechanism is installed on the outside of the conveyor belt; the driving mechanism comprises a driving rod, and the driving rod is fixedly connected to the riveted plate by bolts, and a positioning platform is installed on the lower end of the riveted plate. A vertical groove is provided on the lower side of the end, and a resistance mechanism is installed inside the vertical groove. The resistance mechanism includes a rotating plate, the inner side of one end of the rotating plate is fixedly connected to the central shaft, and a limiting rod is installed on the lower end of one side of the rotating plate to which the central shaft is fixed; the supporting mechanism includes a connecting plate, the inner side of one end of the connecting plate is rotatably connected to the rotating shaft through an anti-reversal device and a damping rubber ring, the outside of the rotating shaft is fixedly connected to a roller, the top end of the rotating shaft is welded and fixed with a connecting shaft, and the outer side of the other end of the connecting shaft is welded and fixed with a gear ring, the conveyor belt includes a conveyor belt surface, a flexible belt is integrally formed in the middle of the outer side of the conveyor belt surface, and a number of circular holes are provided on the inside of the flexible belt.

[0008] As a further optimization of the present invention, the protective cover includes a cover shell, both ends of the cover shell are provided with side holes for allowing the conveyor belt and the positioning mechanism to pass through, a slide groove is provided on the upper side of the rear end of the cover shell, and the drive rod is slidably connected to the cover shell through the slide groove.

[0009] As a further optimization of the present invention, a positioning plate is welded and fixed to the rear end of the protective cover, the upper end of the positioning plate is fixedly connected to the electric telescopic rod by bolts, the upper side of the movable end of the electric telescopic rod is fixedly connected to the driving rod, the positioning plate is parallel to the upper end of the driving rod, and the angle between the positioning plate and the electric telescopic rod is 90°.

[0010] As a further optimized content of the present invention, the integrated control box, the electric telescopic rod and the lifter are electrically connected, and the electric telescopic rod and the lifter operate synchronously.

[0011] As a further optimization of the present invention, both ends of the central axis fixedly connected to the inner side of the rotating plate are rotatably connected to the inner wall of the vertical groove, both ends of the limit rod are fixedly connected to the inner wall of the vertical groove, and the resistance mechanism is provided with several resistance mechanisms, which are installed inside the vertical groove.

[0012] As a further optimization of the present invention, there are four connecting plates, one end of which is fixedly connected to the protective cover and the fixing seat by bolts, the center points of the connecting plates are arranged in the same horizontal plane, and there are two rollers, the outer sides of the rollers are rotatably connected to the conveyor belt surface, the rollers are parallel to each other, and one of the rollers is on the same axis as the connecting shaft and the gear ring.

[0013] As a further optimization of the present invention, the bottom end of the fixed seat is provided with a through hole for the conveyor belt and the positioning mechanism to pass through, the number of circular holes opened on the inner side of the flexible belt is the same as the number of the positioning mechanism, and the flexible belt is rotatably connected to the positioning mechanism through the circular holes.

[0014] As a further optimized content of the present invention, the positioning mechanism includes a positioning box, a fixed shaft is fixedly connected to the middle of the opposite side of the open end of the positioning box through a connecting block, the connecting block is welded and fixed to the positioning box, and support blocks are welded and fixed at the four corners of the side of the positioning box where the connecting block is welded, the connecting block and the support block are both arc-shaped on the side away from the positioning box, and the fixed shaft is rotatably connected to the flexible belt through a circular hole.

[0015] As a further optimization of the present invention, there are several positioning mechanisms, and the positioning mechanisms are evenly distributed on the outside of the conveyor belt surface at equal distances.

[0016] As further optimized content of the present invention, the following steps are performed: S1: placing the motor rotor to be hot-riveted in a protective shell, and then placing the protective shell and the electric plate together inside a positioning box; positioning: placing the motor rotor in the protective shell, and then placing it inside the positioning box. During the placement process, aligning the motor rotor with a hot-riveted plastic column provided inside the protective shell, so that the upper end of the riveted plastic column is deformed by contacting the riveted plate with the upper end of the riveted plastic column, thereby fixing the motor rotor inside the protective shell and completing the positioning of the motor rotor;

[0017] S2: Power on the entire device and control the synchronous operation of the electric telescopic rod and the lifter through the integrated control box: After the entire device enters the working state, the integrated control box controls the synchronous operation of the electric telescopic rod and the lifter according to the set program. During this process, the electric telescopic rod mainly controls the lifting and lowering of the drive rod, and the lifter mainly controls the lifting and lowering of the riveted plate. The integrated control box is used to adjust the synchronous operation of the lifter and the electric telescopic rod;

[0018] S3: The lifter drives the riveting plate to hot-rivet the motor rotor into the protective shell: During the downward movement of the lifter, the riveting plate is driven to rivet the protective shell and the motor rotor placed inside the positioning box, so that the motor rotor is stably installed inside the protective shell;

[0019] S4: At the same time, the lifter cooperates with the electric telescopic rod to drive the driving rod to move up and down reciprocatingly, driving the conveyor belt to rotate synchronously to realize automatic loading: in the process of the driving rod being driven downward by the electric telescopic rod, the rotating plate set inside the vertical slot contacts the gear ring and rotates, and thus does not drive the gear ring to rotate. When the driving rod moves upward, the rotating plate cannot rotate due to the interference of the limit rod, thereby driving the gear ring to rotate. During this process, the riveting plate is in an upward state, and the riveting work is just completed. The rotation of the gear ring drives the roller and the conveyor belt surface to rotate, and the next protective shell to be riveted is driven by the lower end of the riveted plate through the positioning box to prepare for processing. The cycle is carried out in sequence, and the riveting loading process can be accurately realized.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the present invention, the automatic feeding mechanism can be assembled with the original riveting equipment through the provided driving mechanism and conveyor belt, which solves the problems of manual operation, low work efficiency and high investment cost of automated production equipment, and is more suitable for small processing plants;

[0022] 2. In the present invention, the supporting mechanism cooperates with the driving mechanism to accurately realize the loading process of the riveting process without adding too much power equipment, thereby reducing the cost of loading production, and the structure is relatively simple, which is convenient for later maintenance;

[0023] 3. In the present invention, the positioning mechanism is provided to stably limit and store objects during the riveting process, thereby ensuring the quality of the riveting of the objects, and has the effects of continuous loading and automatic unloading, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 Schematic diagram of the structure at A in the middle;

[0026] Figure 3 This is a schematic diagram of the protective cover structure of the present invention;

[0027] Figure 4 Schematic diagram of the driving mechanism structure of the present invention;

[0028] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at B in the middle;

[0029] Figure 6 This is a schematic diagram of the driving rod structure of the present invention;

[0030] Figure 7It is a schematic diagram of the conveyor belt structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the conveyor belt surface structure of the present invention;

[0032] Figure 9 This is a schematic structural diagram of the positioning mechanism of the present invention;

[0033] Figure 10 It is a schematic diagram of the support mechanism structure of the present invention.

[0034] In the figure: 1. Fixed seat; 2. Integrated control box;

[0035] 3. Protective cover; 31. Cover shell; 32. Side hole; 33. Slide groove;

[0036] 4. Driving mechanism; 41. Driving rod; 42. Vertical slot; 43. Resistance mechanism; 431. Rotating plate; 432. Central axis; 433. Limiting rod;

[0037] 5. Electric telescopic rod; 6. Positioning plate; 7. Riveted plate;

[0038] 8. Support mechanism; 81. Connecting plate; 82. Roller; 83. Rotating shaft; 84. Connecting shaft; 85. Ring gear;

[0039] 9. Conveyor belt; 91. Conveyor belt surface; 92. Flexible belt; 93. Round hole;

[0040] 10. Positioning mechanism; 101. Positioning box; 102. Connecting block; 103. Fixed shaft; 104. Support block;

[0041] 11. Lifter; 12. Positioning platform. DETAILED DESCRIPTION

[0042] See also Figure 1-10 , the present invention provides a technical solution:

[0043] An automatic riveting device for a motor rotor and a control method thereof include a fixing base 1 and an integrated control box 2. The upper end of the fixing base 1 is welded with the integrated control box 2 through a protective cover 3. A lifter 11 is installed in the middle of the bottom end of the integrated control box 2. The bottom end of the lifter 11 is fixedly connected to a riveting plate 7 by bolts. A positioning platform 12 is installed at the lower end of the riveting plate 7. The movable end of the lifter 11 is fixedly connected to a driving mechanism 4. A supporting mechanism 8 is installed on one side of the driving mechanism 4. A conveyor belt 9 is installed on the outside of the supporting mechanism 8. The upper end of the conveyor belt 9 is located between the riveting plate 7 and the positioning platform 12. A positioning mechanism 10 is installed on the outside of the conveyor belt 9. The driving mechanism 4 includes a driving rod 41. A vertical slot 42 is opened on the lower side of one end of the driving rod 41. A resistance mechanism 43 is installed inside the vertical slot 42, and the resistance mechanism 43 includes a rotating plate 431, and the inner side of one end of the rotating plate 431 is fixedly connected to the central shaft 432, and a limiting rod 433 is installed at the lower end of one side of the rotating plate 431 fixed with the central shaft 432; the supporting mechanism 8 includes a connecting plate 81, and the inner side of one end of the connecting plate 81 is rotatably connected to the rotating shaft 83 through an anti-reversal device and a damping rubber ring, and the outside of the rotating shaft 83 is fixedly connected to the roller 82, and the top of the rotating shaft 83 is welded and fixed with a connecting shaft 84, and the outer side of the other end of the connecting shaft 84 is welded and fixed with a gear ring 85. The conveyor belt 9 includes a conveyor belt surface 91, and a flexible belt 92 is integrally formed in the middle of the outer side of the conveyor belt surface 91, and a number of circular holes 93 are opened on the inside of the flexible belt 92.

[0044] As a further technical solution for implementing this solution, the protective cover 3 includes a cover shell 31. Side holes 32 for allowing the conveyor belt 9 and the positioning mechanism 10 to pass through are opened at both ends of the cover shell 31. A slide groove 33 is opened on the upper side of the rear end of the cover shell 31. The drive rod 41 is slidably connected to the cover shell 31 through the slide groove 33. Through the protective cover 3 set as above, the drive rod 41 can be positioned, and the fixed base 1 and the integrated control box 2 can be connected at the same time;

[0045] As a further technical solution of this solution, a positioning plate 6 is welded and fixed to the rear end of the protective cover 3. The upper end of the positioning plate 6 is fixedly connected to the electric telescopic rod 5 by bolts. The upper side of the movable end of the electric telescopic rod 5 is fixedly connected to the driving rod 41. The positioning plate 6 is parallel to the upper end of the driving rod 41. The angle between the positioning plate 6 and the electric telescopic rod 5 is 90°. Through the above arrangement, it can be ensured that the electric telescopic rod 5 drives the positioning plate 6 to move up and down stably;

[0046] As a further technical solution implemented in this scheme, the integrated control box 2, the electric telescopic rod 5 and the lifter 11 are electrically connected, and the electric telescopic rod 5 and the lifter 11 operate synchronously. Through the above arrangement, the overall intelligence of the device can be further improved;

[0047] As a further technical solution for implementing this solution, both ends of the central shaft 432 fixedly connected to the inner side of the rotating plate 431 are rotatably connected to the inner wall of the vertical slot 42, and both ends of the limiting rod 433 are fixedly connected to the inner wall of the vertical slot 42. The resistance mechanism 43 is provided with a plurality of resistance mechanisms 43, which are installed inside the vertical slot 42 and can stably limit the rotating plate 431 and the limiting rod 433.

[0048] As a technical solution further implemented in this scheme, four connecting plates 81 are provided, one end of which is fixedly connected to the protective cover 3 and the fixing seat 1 by bolts, the center points of the connecting plates 81 are arranged in the same horizontal plane, and two rollers 82 are provided. The outer sides of the rollers 82 are rotatably connected to the conveyor belt surface 91, and the rollers 82 are parallel to each other. One of the rollers 82 is coaxial with the connecting shaft 84 and the gear ring 85. Through the above arrangement, the stability of the overall operation of the device is further improved;

[0049] As a further technical solution of this solution, a through hole is opened at the bottom of the fixing base 1 for the conveyor belt 9 and the positioning mechanism 10 to pass through. The number of circular holes 93 opened on the inner side of the flexible belt 92 is the same as the number of the positioning mechanism 10. The flexible belt 92 is rotatably connected to the positioning mechanism 10 through the circular holes 93. Through the above arrangement, the positioning mechanism 10 can be accurately positioned.

[0050] As a technical solution further implemented in this solution, the positioning mechanism 10 includes a positioning box 101, a fixed shaft 103 is fixedly connected to the middle of the opposite side of the open end of the positioning box 101 through a connecting block 102, the connecting block 102 is welded and fixed to the positioning box 101, and the four corners of the side of the positioning box 101 where the connecting block 102 is welded are all welded and fixed with support blocks 104, the connecting block 102 and the support block 104 are both arc-shaped on the side away from the positioning box 101, the fixed shaft 103 is rotatably connected to the flexible belt 92 through the circular hole 93, and the positioning mechanism 10 is provided with a plurality of positioning mechanisms 10, which are evenly distributed at equal distances on the outside of the conveyor belt surface 91. By means of the positioning mechanism 10 provided above, the riveted materials can be stably positioned;

[0051] S1: Place the motor rotor that needs to be hot-riveted in a protective shell, and then place the protective shell and the electric plate together inside the positioning box 101 for positioning: Place the motor rotor in the protective shell, and then place it inside the positioning box 101. During the placement process, align the motor rotor with the hot-riveted plastic column set inside the protective shell, so that the riveting plate 7 contacts the upper end of the riveted plastic column, causing the upper end of the riveted plastic column to deform, thereby fixing the motor rotor inside the protective shell, completing the positioning of the motor rotor;

[0052] S2: Power on the entire device and control the synchronous operation of the electric telescopic rod 5 and the lifter 11 through the integrated control box 2: After the entire device enters the working state, the integrated control box 2 controls the synchronous operation of the electric telescopic rod 5 and the lifter 11 according to the set program. During this process, the electric telescopic rod 5 mainly controls the lifting and lowering of the drive rod 41, and the lifter 11 mainly controls the lifting and lowering of the riveting plate 7. The integrated control box 2 is used to adjust the synchronous operation of the lifter 11 and the electric telescopic rod 5;

[0053] S3: The lifter 11 drives the riveting plate 7 to hot-rivet the motor rotor into the protective shell: During the downward movement of the lifter 11, the riveting plate 7 is driven to rivet the protective shell and the motor rotor placed inside the positioning box 101, so that the motor rotor is stably installed inside the protective shell;

[0054] S4: At the same time, the lifter 11 cooperates with the electric telescopic rod 5 to drive the driving rod 41 to move up and down, driving the conveyor belt 9 to rotate synchronously to realize automatic loading: in the process of the driving rod 41 being driven downward by the electric telescopic rod 5, the rotating plate 431 provided inside the vertical slot 42 contacts the gear ring 85 and rotates, thereby not driving the gear ring 85 to rotate. When the driving rod 41 moves upward, the rotating plate 431 cannot rotate due to the interference of the limit rod 433, thereby driving the gear ring 85 to rotate. During this process, the riveting plate 7 is in an ascending state and the riveting work is just completed. The rotation of the gear ring 85 drives the roller 82 and the conveyor belt surface 91 to rotate, and the next protective shell to be riveted is driven by the positioning box 101 with the lower end of the riveted plate 7 to be processed, and the cycle is repeated in sequence, and the riveting loading process can be accurately realized.

[0055] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method of the present invention and its core ideas. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. An automated riveting device for a motor rotor, comprising a fixing seat (1) and an integrated control box (2), characterized in that: The upper end of the fixing seat (1) is welded with an integrated control box (2) through a protective cover (3), a lifter (11) is installed in the middle of the bottom end of the integrated control box (2), the bottom end of the lifter (11) is fixedly connected to a riveted plate (7) by bolts, the lower end of the riveted plate (7) is installed with a positioning platform (12), the movable end of the lifter (11) is fixedly connected to a driving mechanism (4), a supporting mechanism (8) is installed on one side of the driving mechanism (4), a conveyor belt (9) is installed on the outside of the supporting mechanism (8), the upper end of the conveyor belt (9) is located between the riveted plate (7) and the positioning platform (12), and a positioning mechanism (10) is installed on the outside of the conveyor belt (9); The driving mechanism (4) includes a driving rod (41), a vertical slot (42) is provided on the lower side of one end of the driving rod (41), a resistance mechanism (43) is installed inside the vertical slot (42), and the resistance mechanism (43) includes a rotating plate (431), a central shaft (432) is fixedly connected to the inner side of one end of the rotating plate (431), and a limiting rod (433) is installed on the lower end of one side of the rotating plate (431) to which the central shaft (432) is fixed; The support mechanism (8) includes a connecting plate (81), the inner side of one end of the connecting plate (81) is rotatably connected to a rotating shaft (83) through an anti-reversal device and a damping rubber ring, the outer side of the rotating shaft (83) is fixedly connected to a roller (82), the top end of the rotating shaft (83) is welded and fixed with a connecting shaft (84), and the outer side of the other end of the connecting shaft (84) is welded and fixed with a gear ring (85), the conveyor belt (9) includes a conveyor belt surface (91), a flexible belt (92) is integrally formed in the middle of the outer side of the conveyor belt surface (91), and a plurality of circular holes (93) are opened on the inner side of the flexible belt (92). A positioning plate (6) is welded and fixed to the rear end of the protective cover (3), and the upper end of the positioning plate (6) is fixedly connected to the electric telescopic rod (5) by bolts. The upper side of the movable end of the electric telescopic rod (5) is fixedly connected to the driving rod (41). The positioning plate (6) is parallel to the upper end of the driving rod (41), and the angle between the positioning plate (6) and the electric telescopic rod (5) is 90°. The positioning mechanism (10) includes a positioning box (101), a fixed shaft (103) is fixedly connected to the middle of the opposite side of the opening end of the positioning box (101) through a connecting block (102), the connecting block (102) and the positioning box (101) are welded and fixed, and support blocks (104) are welded and fixed to the four corners of the side of the positioning box (101) where the connecting block (102) is welded and fixed, and the connecting block (102) and the support block (104) are both arranged in an arc shape on the side away from the positioning box (101), and the fixed shaft (103) is rotatably connected to the flexible belt (92) through a circular hole (93). When the driving rod (41) is driven downward by the electric telescopic rod (5), the rotating plate (431) provided inside the vertical slot (42) contacts the gear ring (85) and rotates, thereby not driving the gear ring (85) to rotate. When the driving rod (41) moves upward, the rotating plate (431) cannot rotate due to the interference of the limiting rod (433), thereby driving the gear ring (85) to rotate.

2. The automatic riveting device for a motor rotor according to claim 1, characterized in that: The protective cover (3) includes a cover shell (31), and side holes (32) are provided at both ends of the cover shell (31) for allowing the conveyor belt (9) and the positioning mechanism (10) to pass through. A sliding groove (33) is provided on the upper side of the rear end of the cover shell (31), and the driving rod (41) is slidably connected to the cover shell (31) through the sliding groove (33).

3. The automatic riveting device for a motor rotor according to claim 1, characterized in that: The integrated control box (2), the electric telescopic rod (5) and the lifter (11) are electrically connected, and the electric telescopic rod (5) and the lifter (11) operate synchronously.

4. The automatic riveting device for a motor rotor according to claim 1, characterized in that: Both ends of the central shaft (432) fixedly connected to the inner side of the rotating plate (431) are rotatably connected to the inner wall of the vertical slot (42), and both ends of the limiting rod (433) are fixedly connected to the inner wall of the vertical slot (42). The resistance mechanism (43) is provided with a plurality of resistance mechanisms (43), and the resistance mechanism (43) is installed inside the vertical slot (42).

5. The automatic riveting device for a motor rotor according to claim 1, characterized in that: There are four connecting plates (81), one end of each of which is fixedly connected to the protective cover (3) and the fixing seat (1) by a bolt, and the center points of the connecting plates (81) are arranged on the same horizontal plane. There are two rollers (82), the outside of each roller (82) is rotatably connected to the conveyor belt surface (91), and the rollers (82) are parallel to each other, and one of the rollers (82) has the same axis as the connecting shaft (84) and the gear ring (85).

6. The automatic riveting device for a motor rotor according to claim 1, characterized in that: The bottom end of the fixing seat (1) is provided with a through hole for the conveyor belt (9) and the positioning mechanism (10) to pass through. The number of the circular holes (93) provided on the inner side of the flexible belt (92) is the same as the number of the positioning mechanism (10). The flexible belt (92) is rotatably connected to the positioning mechanism (10) through the circular holes (93).

7. The automatic riveting device for a motor rotor according to claim 1, characterized in that: The positioning mechanisms (10) are provided in plurality, and the positioning mechanisms (10) are evenly distributed at equal intervals on the outside of the conveyor belt surface (91).

8. A control method for an automatic riveting device for a motor rotor according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: placing the motor rotor to be hot-riveted in a protective shell, and then placing the protective shell and the electric plate together in the interior of the positioning box (101) for positioning: placing the motor rotor in the protective shell, and then placing it inside the positioning box (101), during the placement process, aligning the motor rotor with the hot-riveted plastic column provided inside the protective shell, so that the riveted plate (7) contacts the upper end of the riveted plastic column, causing the upper end of the riveted plastic column to deform, and then fixing the motor rotor inside the protective shell, thereby completing the positioning of the motor rotor; S2: Power on the entire device, and control the electric telescopic rod (5) and the lifter (11) to work synchronously through the integrated control box (2): After the entire device enters the working state, the integrated control box (2) controls the electric telescopic rod (5) and the lifter (11) to work synchronously according to the set program. During this process, the electric telescopic rod (5) mainly controls the lifting and lowering of the driving rod (41), and the lifter (11) mainly controls the lifting and lowering of the riveting plate (7). The integrated control box (2) is used to adjust the lifter (11) and the electric telescopic rod (5) to operate synchronously; S3: The lifter (11) drives the riveting plate (7) to hot-rivet the motor rotor in the protective shell: during the downward movement of the lifter (11), the riveting plate (7) is driven to rivet the protective shell and the motor rotor placed inside the positioning box (101), so that the motor rotor is stably installed inside the protective shell; S4: At the same time, the lifter (11) cooperates with the electric telescopic rod (5) to drive the driving rod (41) to move up and down reciprocatingly, driving the conveyor belt (9) to rotate synchronously, realizing automatic loading: when the driving rod (41) is driven downward by the electric telescopic rod (5), the rotating plate (431) provided inside the vertical slot (42) contacts the gear ring (85) and rotates, thereby not driving the gear ring (85) to rotate. When the driving rod (41) moves upward, the rotating plate (431) cannot rotate under the interference of the limit rod (433), thereby driving the gear ring (85) to rotate. During this process, the riveting plate (7) is in an ascending state, just completing the riveting work. The gear ring (85) rotates and drives the roller (82) and the conveyor belt surface (91) to rotate, and the next protective shell to be riveted is driven by the positioning box (101) to the lower end of the riveting plate (7) to be processed. The cycle is repeated in sequence, and the loading process of the riveting process can be accurately realized.

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