An online paper inserting machine for stator assembly

Abstract

The present invention discloses an online paper inserting machine for a stator assembly, which belongs to the technical field of motor stator production. The machine comprises a frame (1), a stator core conveying device (2) is arranged on the frame (1), the stator core conveying device (2) comprises a conveyor belt (3), a stator core lifting device (5) is arranged at the discharge end of the conveyor belt (3), a paper inserting device (9) is arranged above the stator core lifting device (5), and the paper inserting device (9) comprises a storage roller (10), an indentation mechanism (11), a first feeding mechanism (12) and a paper cutting mechanism (13) arranged in sequence from top to bottom. A second feeding mechanism (14) is arranged on one side of the paper cutting mechanism (13). The present invention can be used in conjunction with a stator core production line to realize the automated operation of inserting insulating paper into the stator core, thereby improving production efficiency and ensuring the product quality of the motor stator.

Description

Technical Field

[0001] The present invention relates to the technical field of motor stator production, and in particular to an online paper inserting machine for a stator assembly. Background Art

[0002] A paper inserter is a mechanical device that inserts a certain length of insulating paper into the stator core slots. Several slots for winding copper wire are evenly opened along the circumference of the inner wall of the stator core. Copper wire needs to be inserted into the slots, so insulators must first be installed in the core slots to isolate them from the copper wire to prevent conductivity. The copper wire is then wound around the intervals between adjacent slots according to a certain pattern. Traditional paper inserters rely on manual labor to insert paper, resulting in low production efficiency.

[0003] In order to implement automated production, the utility model patent with application number 202222518062.4 and application date of September 22, 2022 discloses an automatic paper inserting machine, including a frame, a rotating table is provided on the frame, a stepping motor is provided in the frame, the stepping motor is connected to the rotating table, a mounting frame is provided for sliding on the frame, a driving member is provided on the frame, two moving frames are slidably matched on the mounting frame, a moving assembly is provided on the mounting frame, the moving assembly includes a moving motor, a bidirectional screw and a nut block, the moving motor is connected to the mounting frame, the bidirectional screw is rotatably connected to the mounting frame, and the bidirectional screw is threadedly connected to two nut blocks. The mother block and the nut block are connected to the movable frame; a paper insertion mechanism is connected to the side wall of the movable frame away from the mounting frame, and the paper insertion mechanism includes a conveying assembly, a conveying channel, a cutting piece, a baffle, an extrusion die, an extrusion piece and a pushing piece. The conveying channel is located below the conveying assembly, the cutting piece is located between the conveying assembly and the conveying channel, and the baffle is located directly below the conveying channel. The utility model can improve the paper insertion efficiency of the automatic paper insertion machine. Although the above-mentioned prior art can realize automatic paper insertion, the paper insertion shape is simple, and it is necessary to manually place the stator core individually on the rotating table of the paper insertion machine for paper insertion, and it is impossible to perform automatic paper insertion on the production line of the stator core production.

[0004] The invention patent with application date of June 27, 2023 and application number 202310766728.4 discloses a motor iron core paper inserting machine, including a workbench, a swing arm rotatably connected to the workbench, two temporary storage parts arranged on the swing arm, and a paper inserting part arranged on the workbench; the temporary storage part includes a receiving tray rotatably connected to the swing arm and a material transfer tube slidably connected to the receiving tray; a temporary storage groove is formed on the material transfer tube; a limiting column is formed on the receiving tray; the swing arm rotates to drive the material transfer tube to slide. When the receiving tray rotates to the first position, the material transfer tube slides relative to the receiving tray, and the insulating paper in the temporary storage groove enters the paper insertion groove. When the receiving tray rotates to the second position, the iron core filled with insulating paper is separated from the receiving tray, and the paper inserting part inserts insulating paper into the temporary storage groove. The invention can automatically insert insulating paper into the iron core; when placing the iron core, there is no need to adjust the angle position; and the processing cycle is shortened to a certain extent. The above motor core paper inserting machine still requires manual placement of the cores individually on the rotating table of the paper inserting machine for paper inserting. It cannot be used in conjunction with a production line for producing cores, and cannot automatically insert paper on the production line.

[0005] On November 6, 2024, the invention patent with application number 202411571159.9 discloses a universal paper inserting machine for a motor stator, including a frame, a loading mechanism, a feeding mechanism and a paper inserting mechanism, the loading mechanism is fixed to one side of the frame, the loading mechanism has a feeding shaft, the feeding shaft can rotate forward or reverse to feed or receive material, the feeding mechanism is fixed to the frame, and the feeding mechanism is configured to provide power for the insulating paper to transport the insulating paper into the paper inserting mechanism to be bent by the paper inserting mechanism; the paper inserting mechanism includes a driving structure and a paper inserting mold, the driving structure is fixed to the frame, and the paper inserting mold is detachably connected to the driving structure. Since the paper inserting mechanism includes a driving structure and a paper inserting mold, the paper inserting mold is detachably connected to the driving structure, so that when it is necessary to insert insulating paper of different cross sections into the motor, the insulating paper of different cross sections can be obtained by directly replacing the paper inserting mold, thereby achieving the versatility of the paper inserting machine.

[0006] The paper inserting machine in the above-mentioned prior art is universal, but has a complex structure and cannot be used in conjunction with a production line for producing stator cores, and cannot automatically insert paper on the production line. Summary of the Invention

[0007] The purpose of the present invention is to solve the technical problem that the existing paper inserting machine cannot be used in conjunction with the stator core production line and cannot realize the automatic and continuous insertion of insulating paper into the stator core slot body. The present invention provides an online paper inserting machine for stator assembly that can be used in conjunction with the stator core production line to realize the automatic and continuous insertion of insulating paper into the stator core slot body, thereby improving production efficiency and ensuring the product quality of the motor stator.

[0008] In order to solve the above technical problems, the present invention provides an online paper inserting machine for a stator assembly, comprising a frame, a stator core conveying device is provided on the frame, the stator core conveying device comprises a conveyor belt, and a first driving mechanism for driving the conveyor belt transmission, a stator core lifting device is provided at the discharge end of the conveyor belt, the stator core lifting device comprises a tray for placing the stator core, and the frame is respectively provided with a second driving mechanism for driving the tray to reciprocate in the longitudinal direction, and a third driving mechanism for driving the tray to rotate 0~360° in its own circumferential direction, the stator A paper insertion device is provided above the iron core lifting device, and the paper insertion device includes a storage roller, an indentation mechanism, a first feeding mechanism and a paper cutting mechanism arranged in sequence from top to bottom. A second feeding mechanism is provided on one side of the paper cutting mechanism, and the second feeding mechanism includes a hopper, and a first storage cavity and a second storage cavity are provided in the hopper, which are connected and pass through the hopper in the longitudinal direction respectively. The first storage cavity is located between the second storage cavity and the paper cutting mechanism and corresponds to the first feeding mechanism. A paper insertion rod and a fourth driving mechanism for driving the paper insertion rod to pass through the second storage cavity in the longitudinal direction are provided above the second storage cavity.

[0009] As a further improvement measure of the present invention, the above-mentioned stator core lifting device also includes a support seat, and a fifth driving mechanism for driving the support seat to reciprocate along the longitudinal direction, a positioning plate is provided on the support seat, and the outer edge of the positioning plate is sequentially provided with positioning seats along its own circumferential direction, one of the positioning seats is provided with a first positioning pin, and the inner circle of the positioning plate is provided with a first through hole for the tray to pass through, and a fixed plate is provided under the tray, and the tray and the fixed plate are rotatably connected by a bearing, and the fixed plate is connected to the output shaft of the second driving mechanism.

[0010] As a further improvement measure of the present invention, a stator core rotating device is provided between the above-mentioned stator core lifting device and the paper insertion device, and the stator core rotating device includes a rotating disk corresponding to the tray, and a synchronous wheel is provided on the output shaft of the third drive mechanism, and a synchronous belt is provided between the synchronous wheel and the rotating disk. The lower surface of the rotating disk is set as a first contact surface, and the first contact surface contacts the upper end surface of the stator core on the tray. The rotating disk is provided with second through holes corresponding to the stator core slot bodies in sequence along its own circumferential direction.

[0011] As a further improvement measure of the present invention, a positioning ring is provided on the above-mentioned rotating disk, and the outer edge of the positioning ring is provided with positioning blocks corresponding to the second through holes in sequence along its own circumferential direction, one of the positioning blocks is provided with a second positioning pin, and the frame is respectively provided with sensors corresponding to the positioning blocks and the second positioning pins.

[0012] As a further improvement measure of the present invention, the above-mentioned indentation mechanism includes an indentation punch and an indentation die that are arranged relatively to each other, the outer edge of the indentation punch is provided with a protrusion along its own circumferential direction, and the outer edge of the indentation die is provided with a groove along its own circumferential direction, the protrusion is adapted to the groove, and a first gap for the insulating paper to pass through is formed between the outer surface of the protrusion and the inner surface of the groove, and the frame is provided with a sixth driving mechanism for driving the indentation punch to move toward the indentation die.

[0013] As a further improvement measure of the present invention, the above-mentioned first feeding mechanism includes a first pressing roller and a second pressing roller arranged opposite to each other, and a second gap for the insulating paper to pass through is formed between the first pressing roller and the second pressing roller. The frame is respectively provided with a seventh driving mechanism for driving the first pressing roller to rotate, and an eighth driving mechanism for driving the second pressing roller to move in the direction toward the first pressing roller.

[0014] As a further improvement measure of the present invention, a first material guide tube is arranged between the above-mentioned storage roller and the indentation mechanism, and a third through hole is provided in the first material guide tube for the insulating paper to pass through. A second material guide tube is arranged between the indentation mechanism and the first feeding mechanism, and a fourth through hole is provided in the second material guide tube for the insulating paper to pass through. A third material guide tube is arranged between the first feeding mechanism and the storage container, and a fifth through hole is provided in the third material guide tube for the insulating paper to pass through. The axes of the third through hole, the fourth through hole and the fifth through hole coincide with each other, and the fifth through hole corresponds to the first storage cavity in the storage container.

[0015] As a further improvement measure of the present invention, the above-mentioned paper cutting mechanism includes a cutter horizontally arranged on a fixed plate, the cutting edge of the cutter corresponds to the first opening at the upper end of the first storage cavity in the accumulator, a baffle is provided at the lower end of the first storage cavity, a push plate is provided on the fixed plate in the longitudinal direction, the push plate corresponds to the second opening on the side of the first storage cavity in the accumulator, and a ninth driving mechanism is provided on the frame for driving the fixed plate to move horizontally toward the accumulator.

[0016] As a further improvement measure of the present invention, an insulating paper forming mold is arranged below the above-mentioned storage container, and a forming cavity is opened inside the insulating paper forming mold. The forming cavity corresponds to the second storage cavity in the storage container, and the cross-section of the upper opening of the forming cavity is trapezoidal, and the cross-section of the lower opening of the forming cavity is rectangular.

[0017] As a further improvement measure of the present invention, the lower end surface of the above-mentioned paper insertion rod is set as a second contact surface, and the upper end surface of the insulating paper cut by the cutter contacts the second contact surface. The two opposite inner surfaces of the second storage cavity are respectively provided with corresponding first paper insertion grooves, and the two opposite inner surfaces of the forming cavity are respectively provided with corresponding second paper insertion grooves.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. By arranging a stator core conveying device on the frame, the present invention can seamlessly connect with the stator core production line, and can also cooperate with other production lines of the motor stator, breaking through the traditional single-machine operation mode that requires manual feeding, and realizing the automation and continuous operation of stator core loading, insulating paper inserting processing, and stator core transmission. It is suitable for the automated production of motor stators, especially for high-precision scenarios such as new energy vehicle drive motors, which improves the production efficiency of the entire motor stator production line and ensures the product quality of the motor stator; 2. By arranging the coordination between the stator core lifting device, the stator core rotating device and the paper inserting device, the present invention realizes the automation and efficiency of the stator core slot body insulating paper insertion process, ensures the accuracy and consistency of paper insertion, and avoids the possible occurrence of manual paper insertion. The error and instability factors are reduced, the insulation performance and overall quality of the stator core are improved, the performance and reliability of the motor are improved, and the spatial structure of the online paper insertion machine for the stator assembly is simplified to the greatest extent, which is conducive to cost saving; 3. The paper insertion device of the present invention is provided with a storage roller, an indentation mechanism, a first feeding mechanism, a paper cutting mechanism, a second feeding mechanism and an insulating paper forming mold, which can automatically transport, pre-form, cut and finally form the insulating paper, and insert it into the slot body of the stator core in sequence, thereby improving the paper insertion efficiency; 4. The stator core rotating device of the present invention is provided with a positioning ring and a sensor to ensure that the angle of each rotation of the rotating disk corresponds exactly to the position of the next second through hole, that is, the slot body of the stator core corresponds to the paper insertion device in sequence, which plays an important role in improving the accuracy of inserting the insulating paper into the stator core slot body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the front view of the present invention.

[0020] Figure 2 It is a top view of the present invention.

[0021] Figure 3 It is an enlarged stereoscopic view of the stator core lifting device in the present invention.

[0022] Figure 4 It is an enlarged front view of the stator core lifting device in the present invention.

[0023] Figure 5It is an enlarged front view of the stator core lifting device in the present invention when it is in the ascending state.

[0024] Figure 6 It is an enlarged stereoscopic view of the positioning plate in the present invention.

[0025] Figure 7 It is an enlarged top view of the positioning plate in the present invention.

[0026] Figure 8 It is one of the enlarged stereograms of the rotating disk and the positioning ring in the present invention.

[0027] Figure 9 This is the second enlarged stereoscopic view of the rotating disk and the positioning ring in the present invention.

[0028] Figure 10 It is an enlarged three-dimensional view of the paper inserting device in the present invention.

[0029] Figure 11 yes Figure 10 Magnified view of part A.

[0030] Figure 12 It is one of the enlarged three-dimensional views of the paper cutting mechanism in the present invention.

[0031] Figure 13 This is the second enlarged stereoscopic view of the paper cutting mechanism of the present invention.

[0032] Figure 14 It is an enlarged internal structure diagram of the insulating paper forming mold in the present invention.

[0033] Description of the accompanying drawings: 1-frame, 2-stator core conveying device, 3-conveyor belt, 4-first driving mechanism, 5-stator core lifting device, 6-tray, 7-second driving mechanism, 8-third driving mechanism, 9-paper inserting device, 10-storage roller, 11-indentation mechanism, 12-first feeding mechanism, 13-paper cutting mechanism, 14-second feeding mechanism, 15-accumulator, 16-first storage cavity, 17-second storage cavity, 18-paper inserting rod, 19-fourth driving mechanism, 20-support seat, 21-fifth driving mechanism, 22-positioning plate, 23-positioning seat, 24-first positioning pin, 25-first through hole, 26-fixed plate, 27-bearing, 28-stator core rotating device, 29-rotating plate, 30-synchronizing wheel, 31-first contact surface, 32-second through hole, 33-positioning ring, 34-positioning block, 35-second positioning pin, 36-sensor, 37-indentation punch, 38-indentation die, 39-protrusion, 40-groove, 41-first gap, 42-sixth driving mechanism, 43-first pressing roller, 44-second pressing roller, 45-second gap, 46-seventh driving mechanism, 47-eighth driving mechanism, 48-first material guide pipe, 49-second material guide pipe, 50-third material guide pipe, 51-fixed plate, 52-cutter, 53-baffle, 54-push plate, 55-ninth driving mechanism, 56-insulating paper forming mold, 57-forming cavity, 58-first paper insertion slot, 59-second paper insertion slot. DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to the accompanying drawings.

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] On the contrary, the present invention covers any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention as defined by the claims. Furthermore, to facilitate a better understanding of the present invention, certain specific details are described in detail below in the detailed description of the present invention. Those skilled in the art will be able to fully understand the present invention without these details.

[0037] like Figure 1 and Figure 2An online paper inserting machine for a stator assembly is shown, comprising a frame 1, on which a stator core conveying device 2 is provided. The stator core conveying device 2 comprises a conveyor belt 3, and a first drive mechanism 4 for driving the conveyor belt 3. The first drive mechanism 4 can be set as a servo motor, which can accurately control the conveying speed of the conveyor belt 3. The feed end of the conveyor belt 3 corresponds to the stator core production line. The stator cores after production are arranged in sequence on the conveyor belt 3 for transportation. Baffles can be set on both sides of the conveyor belt 3 to prevent the position of the stator core from shifting during transportation, ensuring that the stator core can accurately reach the discharge end. The discharge end of the conveyor belt 3 is provided with a stator core lifting device 5, and a paper inserting device 9 is provided above the stator core lifting device 5.

[0038] like Figures 1 to 7 As shown, the stator core lifting device 5 includes a support seat 20, and a fifth drive mechanism 21 for driving the support seat 20 to reciprocate in the longitudinal direction. The fifth drive mechanism 21 can be set as a cylinder or a servo motor. A positioning plate 22 is provided on the support seat 20, and the outer edge of the positioning plate 22 is sequentially provided with positioning seats 23 along its own circumferential direction, and one of the positioning seats 23 is provided with a first positioning pin 24. In actual operation, the stator core on the conveyor belt 3 can be grasped by a manipulator and placed on the positioning seat 23 of the positioning plate 22, and one of the slots in the stator core is made to correspond to the first positioning pin 24, so as to realize the transfer of the stator core from the stator core conveying device 2 to the stator core lifting device 5. In this embodiment, the number of positioning seats 23 is set to 3, and all are set to L-shaped. The stator core can be positioned and limited by the positioning seat 23 to facilitate the subsequent paper insertion device 9 to insert the insulating paper into the stator core slot body.

[0039] Since insulating paper needs to be inserted into each slot of the stator core, in order to improve efficiency and simplify the spatial structure of the online paper inserting machine for the stator assembly to the greatest extent, the method adopted in the present invention is to rotate the stator core in the circumferential direction so that each slot of the stator core can correspond to the paper inserting device 9 in turn to complete the processing operation of inserting insulating paper. Figure 1 、 Figures 3 to 7As shown, in this embodiment, the inner circle of the positioning plate 22 is provided with a first through hole 25 for the tray 6 to pass through, and a fixed plate 26 is provided below the tray 6. The tray 6 and the fixed plate 26 are rotatably connected via a bearing 27. A second drive mechanism 7 for driving the tray 6 to reciprocate in the longitudinal direction is provided on the frame 1. The fixed plate 26 is connected to the output shaft of the second drive mechanism 7. The second drive mechanism 7 can be configured as a cylinder or a servo motor. The above configuration enables the tray 6 to achieve both longitudinal reciprocating motion and independent circumferential rotation relative to the fixed plate 26. As another solution, the output shaft of the second drive mechanism 7 can be directly keyed to the tray 6, which can also enable the tray 6 to achieve both longitudinal reciprocating motion and circumferential rotation.

[0040] When the stator core is placed on the positioning plate 22, the fifth drive mechanism 21 is started, driving the support seat 20 to drive the positioning plate 22, the stator core on the positioning plate 22, the tray 6, the fixed plate 26 and the second drive mechanism 7 to move synchronously in the direction of the paper insertion device 9. The support seat 20 and the positioning plate 22 pause after moving to a specific height. The second drive mechanism 7 is started, driving the fixed plate 26 to drive the tray 6 through the first through hole 25 to continue moving in the direction of the paper insertion device 9. During the upward movement, the tray 6 lifts the stator core originally placed on the positioning plate 22, that is, at this time, the stator core is placed on the tray 6. Through the second drive mechanism 7 and the fifth drive mechanism 21, the lifting height and speed of the stator core can be accurately controlled so that it corresponds to the paper insertion device 9, ensuring the accuracy and stability of the insulating paper insertion process.

[0041] like Figures 1 to 3 、 Figure 8 and Figure 9 As shown, a stator core rotating device 28 is provided between the stator core lifting device 5 and the paper insertion device 9. The stator core rotating device 28 includes a rotating disk 29 corresponding to the tray 6. The lower surface of the rotating disk 29 is provided with a first contact surface 31. Driven by the second drive mechanism 7, the tray 6 drives the stator core upward until the upper end surface of the stator core contacts the first contact surface 31. The rotating disk 29 is provided with second through holes 32 corresponding to the stator core slots in a sequence along its own circumferential direction. The second through holes 32 allow the insulating paper at the paper insertion device 9 to pass through and ultimately be inserted into the stator core slots.

[0042] The frame 1 is provided with a third drive mechanism 8 for driving the stator core on the tray 6 to rotate 0-360° along its circumferential direction. The third drive mechanism 8 can be configured as a servo motor. In this embodiment, a synchronous pulley 30 is provided on the output shaft of the third drive mechanism 8, and a synchronous belt is provided between the synchronous pulley 30 and the rotating disk 29. Because the tray 6 and the fixed disk 26 are rotationally coupled, the rotating disk 29, driven by the third drive mechanism 8, rotates 0-360° along its circumferential direction, thereby driving the stator core in contact therewith to rotate 0-360° along its circumferential direction. The rotating disk 29 is provided with a positioning ring 33. The outer edge of the positioning ring 33 is provided with positioning blocks 34 corresponding to the second through holes 32 along its circumferential direction. One of the positioning blocks 34 is provided with a second positioning pin 35. The frame 1 is provided with sensors 36 corresponding to the positioning blocks 34 and the second positioning pin 35.

[0043] The sensor 36 is electrically connected to the third drive mechanism 8. Under the induction of the sensor 36, the position angle of the positioning block 34 provided with the second positioning pin 35 in the circumferential direction can be determined first, which is the same as the stator core slot body on the first positioning pin 24. In this way, it can be ensured that the second through holes 32 on the rotating disk 29 can correspond to the stator core slot body one by one. After the rotating disk 29 and the stator core rotate synchronously, it can also be ensured that the insulating paper can be inserted into the corresponding stator core slot body through each second through hole 32; secondly, through the induction of the positioning block 34 by the sensor 36, the next rotation can be performed after completing the insulating paper insertion process once, and it can be ensured that the angle of each rotation of the rotating disk 29 corresponds exactly to the position of the next second through hole 32, that is, the slot body of the stator core corresponds to the paper insertion device 9 in sequence, completing the process of inserting insulating paper into the stator core slot body.

[0044] like Figure 2 、 Figure 10 and Figure 11 As shown, the paper insertion device 9 includes a storage roller 10, an indentation mechanism 11, a first feeding mechanism 12 and a paper cutting mechanism 13 arranged in sequence from top to bottom. The storage roller 10 is used to store insulating paper on the one hand, and on the other hand, it can guide the material and ensure the flatness of the insulating paper during the insulation paper transportation process. The storage roller 10 can cooperate with the tension sensor to monitor and adjust the tension of the insulating paper in real time to ensure that the insulating paper always maintains appropriate tension during transportation to avoid relaxation or breakage.

[0045] The indentation mechanism 11 includes an indentation punch 37 and an indentation die 38 that are relatively arranged. Both the indentation punch 37 and the indentation die 38 are rotatably arranged on the frame 1. The outer edge of the indentation punch 37 is provided with a protrusion 39 along its own circumferential direction, and the outer edge of the indentation die 38 is provided with a groove 40 along its own circumferential direction. The protrusion 39 is adapted to the groove 40, and a first gap 41 for the insulating paper to pass through is formed between the outer surface of the protrusion 39 and the inner surface of the groove 40. The indentation punch 37 and the indentation die 38 cooperate to squeeze the insulating paper and deform it, transforming it from a flat shape to a rectangular shape with one side open, corresponding to the shape of the stator core slot body. At this time, it is a preformed insulating paper.

[0046] Depending on the stator core slot structure, the indentation punch 37 and indentation die 38 can be replaced to ensure that the preformed insulating paper meets the insertion requirements of different stator cores. A sixth drive mechanism 42 is provided on the frame 1 for driving the indentation punch 37 toward the indentation die 38. This sixth drive mechanism 42 can be configured as a cylinder or servo motor. Driven by this sixth drive mechanism 42, the size of the first gap 41 can be adjusted according to the material and thickness of the insulating paper, thereby precisely adjusting the indentation pressure and ensuring that the indentation effect on the insulating paper meets the requirements.

[0047] The first feeding mechanism 12 includes a first nip roller 43 and a second nip roller 44 arranged opposite to each other. The first nip roller 43 and the second nip roller 44 are both rotatably mounted on the frame 1. A second gap 45 for the insulating paper to pass through is formed between the first nip roller 43 and the second nip roller 44. The frame 1 is provided with a seventh drive mechanism 46 for driving the first nip roller 43 to rotate, and an eighth drive mechanism 47 for driving the second nip roller 44 to move toward the first nip roller 43. The seventh drive mechanism 46 can be configured as a servo motor. In this embodiment, the first nip roller 43 and a first transmission gear are respectively provided on the output shaft of the seventh drive mechanism 46, and the second nip roller 44 is provided with a second transmission gear. The first transmission gear meshes with the second transmission gear. Driven by the seventh drive mechanism 46, the first nip roller 43 and the first transmission gear rotate, driving the second transmission gear and the second nip roller 44 to rotate, thereby conveying the insulating paper. The eighth driving mechanism 47 can be configured as a cylinder or a servo motor. The eighth driving mechanism 47 can be driven to adjust the size of the second gap 45 .

[0048] like Figure 1 、 Figure 10 、 Figure 12 and Figure 13As shown, a second feeding mechanism 14 is provided on one side of the paper cutting mechanism 13. The second feeding mechanism 14 includes a hopper 15. The hopper 15 is provided with a first storage cavity 16 and a second storage cavity 17 which are connected and pass through the hopper 15 in the longitudinal direction respectively. The first storage cavity 16 is located between the second storage cavity 17 and the paper cutting mechanism 13 and corresponds to the first feeding mechanism 12. The first feeding mechanism 12 transports the preformed insulating paper into the first storage cavity 16. The paper cutting mechanism 13 includes a cutter 52 horizontally arranged on the fixed plate 51, and the blade of the cutter 52 corresponds to the first opening at the upper end of the first storage cavity 16 in the accumulator 15 to ensure the flatness of the insulating paper cut. A push plate 54 is arranged on the fixed plate 51 along the longitudinal direction, and the push plate 54 corresponds to the second opening on the side of the first storage cavity 16 in the accumulator 15. The frame 1 is provided with a ninth drive mechanism 55 for driving the fixed plate 51 to move horizontally toward the accumulator 15. The ninth drive mechanism 55 can be set as a cylinder or a servo motor.

[0049] Under the drive of the ninth driving mechanism 55, the fixed plate 51 drives the cutter 52 and the push plate 54 to move synchronously toward the accumulator 15, and the cutter 52 is used to cut the insulating paper, and the push plate 54 is used to push the insulating paper cut in the first storage chamber 16 into the second storage chamber 17. The lower end of the first storage chamber 16 is provided with a baffle 53, and the baffle 53 and the accumulator 15 can be an integrated structure, so that the insulating paper after cutting can be prevented from falling from the lower end of the first storage chamber 16. The top of the second storage chamber 17 is provided with a paper insertion rod 18, and a fourth driving mechanism 19 for driving the paper insertion rod 18 to pass through the second storage chamber 17 in the longitudinal direction. The fourth driving mechanism 19 can be set to a cylinder or a servo motor. Under the drive of the fourth driving mechanism 19, the paper insertion rod 18 pushes the insulating paper located in the second storage chamber 17 downward so that it can pass through the second through hole 32 on the rotating disk 29 and enter the slot body of the stator core. To ensure the precise positioning and feeding capacity of the paper insertion rod 18, a guide rail is provided on the frame 1 along the driving direction of the fourth driving mechanism 19, and a guide block is provided on the paper insertion rod 18. The guide rail and the guide block slide together so that the paper insertion rod 18 can be accurately inserted into the second storage cavity 17 and the insulating paper can be accurately inserted into the slot body of the stator core.

[0050] Since the pre-formed insulating paper has an opening on one side, the opening will open during transportation, turning the insulating paper into a trapezoidal shape. Therefore, in order to ensure that the insulating paper can be smoothly inserted into the slot of the stator core, the insulating paper needs to be re-formed, such as Figure 8 、 Figure 10 and Figure 14As shown, in this embodiment, an insulating paper forming mold 56 is provided below the accumulator 15, and a forming cavity 57 is opened inside the insulating paper forming mold 56. The forming cavity 57 corresponds to the second storage cavity 17 in the accumulator 15. The cross-section of the upper opening of the forming cavity 57 is trapezoidal to facilitate the entry of the insulating paper. The cross-section of the lower opening of the forming cavity 57 is rectangular, corresponding to the shape of the stator core slot body. The insulating paper formed by the insulating paper forming mold 56 is directly inserted into the slot body of the stator core under the push of the paper insertion rod 18. The distance between the insulating paper forming mold 56 and the rotating disk 29 is relatively close, which can largely avoid the deformation of the formed insulating paper and the occurrence of incompatibility with the stator core slot body.

[0051] like Figure 12 and Figure 14 As shown, since the interior of the formed insulating paper is a hollow structure, in order to ensure that the paper insertion rod 18 pushes the insulating paper, it is necessary to ensure that the lower end surface of the paper insertion rod 18 can simultaneously contact the two opposite sides of the insulating paper. The lower end surface of the paper insertion rod 18 is set as a second contact surface, and the upper end surface of the insulating paper cut by the cutter 52 contacts the second contact surface. The two opposite inner surfaces of the second storage cavity 17 are respectively provided with corresponding first paper insertion slots 58 for the paper insertion rod 18 to pass through, and the two opposite inner surfaces of the forming cavity 57 are respectively provided with corresponding second paper insertion slots 59 for the paper insertion rod 18 to pass through.

[0052] To protect the insulating paper during transportation, this embodiment provides a first guide tube 48 between the storage roller 10 and the indentation mechanism 11. A third through-hole for the insulating paper to pass through is provided in the first guide tube 48. A second guide tube 49 is provided between the indentation mechanism 11 and the first feeding mechanism 12. A fourth through-hole for the insulating paper to pass through is provided in the second guide tube 49. A third guide tube 50 is provided between the first feeding mechanism 12 and the accumulator 15. A fifth through-hole for the insulating paper to pass through is provided in the third guide tube 50. The axes of the third, fourth, and fifth through-holes coincide, preventing the insulating paper from bending or kinking during transportation. The fifth through-hole corresponds to the first storage cavity 16 within the accumulator 15. That is, the insulating paper delivered by the first feeding mechanism 12 enters the first storage cavity 16 of the accumulator 15 through the fifth through-hole in the third guide tube 50.

[0053] The above describes the embodiments of the present invention in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. A person skilled in the art may make several modifications and improvements without departing from the present invention, and these should also be considered to fall within the scope of protection of the present invention.

Claims

1. An online paper inserting machine for a stator assembly, comprising a frame (1), characterized in that: The frame (1) is provided with a stator core conveying device (2), the stator core conveying device (2) includes a conveyor belt (3), and a first driving mechanism (4) for driving the conveyor belt (3). The discharging end of the conveyor belt (3) is provided with a stator core lifting device (5), the stator core lifting device (5) includes a tray (6) for placing the stator core, the frame (1) is provided with a second driving mechanism (7) for driving the tray (6) to reciprocate in the longitudinal direction, and a third driving mechanism (8) for driving the tray (6) to rotate 0 to 360 degrees in its own circumferential direction. The stator core lifting device ( 5), a paper insertion device (9) is provided above the paper insertion device (9), the paper insertion device (9) comprises a storage roller (10), an indentation mechanism (11), a first feeding mechanism (12) and a paper cutting mechanism (13) arranged in sequence from top to bottom, a second feeding mechanism (14) is provided on one side of the paper cutting mechanism (13), the second feeding mechanism (14) comprises a hopper (15), a first hopper cavity (16) and a second hopper cavity (17) are provided in the hopper (15), the first hopper cavity (16) and the second hopper cavity (17) are connected and pass through the hopper (15) in the longitudinal direction, the first hopper cavity (16) is located between the second hopper cavity (17) and the paper cutting mechanism (13) and is opposite to the first feeding mechanism (12). Correspondingly, a paper insertion rod (18) is provided above the second material storage chamber (17), and a fourth driving mechanism (19) for driving the paper insertion rod (18) to pass through the second material storage chamber (17) in the longitudinal direction. A stator core rotating device (28) is provided between the stator core lifting device (5) and the paper insertion device (9). The stator core rotating device (28) includes a rotating disk (29) corresponding to the tray (6). A synchronous wheel (30) is provided on the output shaft of the third driving mechanism (8). A synchronous belt is provided between the synchronous wheel (30) and the rotating disk (29). The lower surface of the rotating disk (29) is provided with a first contact The first contact surface (31) contacts the upper end surface of the stator core on the tray (6); the rotating disk (29) is provided with second through holes (32) corresponding to the stator core slots in sequence along its own circumferential direction; the rotating disk (29) is provided with a positioning ring (33); the outer edge of the positioning ring (33) is provided with positioning blocks (34) corresponding to the second through holes (32) in sequence along its own circumferential direction; one of the positioning blocks (34) is provided with a second positioning pin (35); and the frame (1) is provided with sensors (36) corresponding to the positioning blocks (34) and the second positioning pin (35), respectively.

2. The online paper inserting machine for stator assembly according to claim 1, characterized in that: The stator core lifting device (5) further includes a support seat (20) and a fifth driving mechanism (21) for driving the support seat (20) to reciprocate in the longitudinal direction, wherein a positioning plate (22) is provided on the support seat (20), and positioning seats (23) are sequentially provided on the outer edge of the positioning plate (22) along its own circumferential direction, wherein a first positioning pin (24) is provided on one of the positioning seats (23), and a first through hole (25) for the tray (6) to pass through is provided on the inner circle of the positioning plate (22), and a fixed plate (26) is provided below the tray (6), and the tray (6) and the fixed plate (26) are rotatably connected via a bearing (27), and the fixed plate (26) is connected to the output shaft of the second driving mechanism (7).

3. The online paper inserting machine for stator assembly according to claim 2, characterized in that: The indentation mechanism (11) comprises an indentation punch (37) and an indentation die (38) arranged opposite to each other, the outer edge of the indentation punch (37) is provided with a protrusion (39) along its own circumferential direction, the outer edge of the indentation die (38) is provided with a groove (40) along its own circumferential direction, the protrusion (39) is adapted to the groove (40), and a first gap (41) for insulating paper to pass through is formed between the outer surface of the protrusion (39) and the inner surface of the groove (40), and a sixth driving mechanism (42) for driving the indentation punch (37) to move toward the indentation die (38) is provided on the frame (1).

4. The online paper inserting machine for stator assembly according to claim 3, characterized in that: The first feeding mechanism (12) includes a first pressing roller (43) and a second pressing roller (44) arranged opposite to each other, and a second gap (45) for the insulating paper to pass through is formed between the first pressing roller (43) and the second pressing roller (44). The frame (1) is respectively provided with a seventh driving mechanism (46) for driving the first pressing roller (43) to rotate, and an eighth driving mechanism (47) for driving the second pressing roller (44) to move in a direction toward the first pressing roller (43).

5. The online paper inserting machine for stator assembly according to claim 4, characterized in that: A first material guide tube (48) is provided between the material storage roller (10) and the indentation mechanism (11), and a third through hole is provided in the first material guide tube (48) for the insulating paper to pass through. A second material guide tube (49) is provided between the indentation mechanism (11) and the first material feeding mechanism (12), and a fourth through hole is provided in the second material guide tube (49) for the insulating paper to pass through. A third material guide tube (50) is provided between the first material feeding mechanism (12) and the material storage container (15), and a fifth through hole is provided in the third material guide tube (50) for the insulating paper to pass through. The axes of the third through hole, the fourth through hole, and the fifth through hole coincide with each other, and the fifth through hole corresponds to the first material storage cavity (16) in the material storage container (15).

6. The online paper inserting machine for stator assembly according to claim 5, characterized in that: The paper cutting mechanism (13) includes a cutter (52) horizontally arranged on a fixed plate (51), the cutting edge of the cutter (52) corresponds to the first opening at the upper end of the first storage cavity (16) in the accumulator (15), a baffle (53) is provided at the lower end of the first storage cavity (16), a push plate (54) is provided on the fixed plate (51) along the longitudinal direction, the push plate (54) corresponds to the second opening on the side of the first storage cavity (16) in the accumulator (15), and a ninth driving mechanism (55) is provided on the frame (1) for driving the fixed plate (51) to move horizontally toward the accumulator (15).

7. The online paper inserting machine for a stator assembly according to claim 6, characterized in that: An insulating paper forming mold (56) is provided below the accumulator (15), and a forming cavity (57) is provided inside the insulating paper forming mold (56). The forming cavity (57) corresponds to the second storage cavity (17) in the accumulator (15), and the cross-section of the upper opening of the forming cavity (57) is trapezoidal, and the cross-section of the lower opening of the forming cavity (57) is rectangular.

8. The online paper inserting machine for a stator assembly according to claim 7, characterized in that: The lower end surface of the paper insertion rod (18) is set as a second contact surface, and the upper end surface of the insulating paper cut by the cutter (52) contacts the second contact surface. The second storage cavity (17) is provided with corresponding first paper insertion slots (58) on two opposite inner surfaces, and the molding cavity (57) is provided with corresponding second paper insertion slots (59) on two opposite inner surfaces.

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