On-line paper inserting machine for stator assembly

Abstract

The invention discloses an on-line paper inserting machine for a stator assembly, and belongs to the technical field of motor stator production, the on-line paper inserting machine comprises a rack (1), a stator core conveying device (2) is arranged on the rack (1), the stator core conveying device (2) comprises a conveying belt (3), a stator core lifting device (5) is arranged at the discharging end of the conveying belt (3), a paper inserting device (9) is arranged above the stator core lifting device (5), and the paper inserting device (9) is arranged above the conveying belt (3). The paper inserting device (9) comprises a material storage roller (10), an indentation mechanism (11), a first feeding mechanism (12) and a paper cutting mechanism (13) which are sequentially arranged from top to bottom, and a second feeding mechanism (14) is arranged on one side of the paper cutting mechanism (13). The stator core insulation paper inserting machine can be used in cooperation with a stator core production line, automatic operation of inserting insulation paper into a stator core is achieved, the production efficiency can be improved, and the production cost is reduced. And the product quality of the motor stator is ensured.

Description

Technical Field

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

[0002] A paper inserting machine is a mechanical device that inserts an insulating paper of a certain length into the slots of a stator core. A number of slots for winding copper wires are evenly arranged along the circumferential direction on the inner wall of the stator core. Copper wires need to be inserted into the slots. Therefore, an insulator needs to be arranged in the core slots first to keep it isolated from the copper wires to prevent conduction, and then the copper wires are wound around the intervals between adjacent slots according to a certain rule. The traditional paper inserting machine uses manual labor for paper insertion, resulting in low production efficiency.

[0003] In order to implement automated production, a utility model patent with an application date of September 22, 2022 and an application number of 202222518062.4 discloses an automatic paper inserting machine, which includes a frame. A rotating table is arranged on the frame, and a stepping motor is arranged inside the frame. The stepping motor is connected to the rotating table. An installation frame is slidably equipped on the frame, and a driving member is arranged on the frame. Two moving frames are slidably fitted on the installation frame, and a moving component is arranged on the installation frame. The moving component includes a moving motor, a bidirectional screw rod and a nut block. The moving motor is connected to the installation frame, the bidirectional screw rod is rotatably connected to the installation frame, two nut blocks are threadedly connected to the bidirectional screw rod, and the nut blocks are connected to the moving frames; A paper inserting mechanism is connected to the side wall of the moving frame away from the installation frame. The paper inserting mechanism includes a conveying component, a conveying channel, a cutting member, a baffle, an extrusion die, an extrusion member and a pushing member. The conveying channel is located below the conveying component, the cutting member is located between the conveying component and the conveying channel, and the baffle is located directly below the conveying channel. This utility model can improve the paper inserting efficiency of the automatic paper inserting machine. Although the above-mentioned prior art can achieve 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 inserting machine for paper insertion, and it is impossible to perform automatic paper insertion on the production line of stator core production.

[0004] The invention patent with application date of June 27, 2023 and application number 202310766728.4 discloses a motor 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 plate rotatably connected to the swing arm and a material transfer tube slidably connected to the receiving plate; a temporary storage groove is formed on the material transfer tube; a limiting column is formed on the receiving plate; the swing arm rotates to drive the material transfer tube to slide. When the receiving plate rotates to the first position, the material transfer tube slides relative to the receiving plate, and the insulating paper in the temporary storage groove enters the paper insertion groove. When the receiving plate rotates to the second position, the iron core filled with insulating paper is separated from the receiving plate, 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; 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, and cannot be used in conjunction with a production line for producing cores, and cannot automatically insert paper on the production line.

[0005] The invention patent with application date of November 6, 2024 and 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, wherein 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 materials, 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 to 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, and the paper inserting mold is detachably connected to the driving structure, 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 realizing 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 still cannot be used in conjunction with a production line for producing stator cores, and cannot perform automatic paper inserting in the production line. Summary of the invention

[0007] The purpose of the present invention is to solve the technical problem that the paper inserting machine in the prior art 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. An online paper inserting machine for a stator assembly is provided, which 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] To solve the above technical problems, the present invention provides an online paper inserting machine for a stator assembly, which includes a frame. A stator core conveying device is arranged on the frame. The stator core conveying device includes a conveyor belt and a first driving mechanism for driving the conveyor belt to move. A stator core lifting device is arranged at the discharge end of the conveyor belt. The stator core lifting device includes a tray for placing the stator core. 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 to 360° in its circumferential direction are respectively arranged on the frame. A paper inserting device is arranged above the stator core lifting device. The paper inserting device includes a storage roller, a creasing mechanism, a first feeding mechanism, and a paper cutting mechanism arranged in sequence from top to bottom. A second feeding mechanism is arranged on one side of the paper cutting mechanism. The second feeding mechanism includes a storage device. A first storage cavity and a second storage cavity which are connected and penetrate through the storage device in the longitudinal direction are opened in the storage device. 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 inserting rod is arranged above the second storage cavity, and a fourth driving mechanism for driving the paper inserting rod to penetrate through the second storage cavity in the longitudinal direction is arranged.

[0009] As a further improvement measure of the present invention, the above-mentioned stator core lifting device further includes a support seat and a fifth driving mechanism for driving the support seat to reciprocate in the longitudinal direction. A positioning disk is arranged on the support seat. Positioning seats are sequentially arranged along the circumferential direction of the outer edge of the positioning disk. A first positioning pin is arranged on one of the positioning seats. A first through hole for the tray to pass through is opened in the inner circle of the positioning disk. A fixed disk is arranged below the tray. The tray is rotatably connected to the fixed disk through a bearing. The fixed disk 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 arranged between the stator core lifting device and the paper inserting device. The stator core rotating device includes a rotating disk corresponding to the tray. A synchronous pulley is arranged on the output shaft of the third driving mechanism. A synchronous belt is arranged between the synchronous pulley and the rotating disk. The lower surface of the rotating disk is set as a first contact surface, and the first contact surface is in contact with the upper end surface of the stator core on the tray. Second through holes corresponding to the stator core slots one by one are sequentially opened along the circumferential direction of the rotating disk.

[0011] As a further improvement measure of the present invention, a positioning ring is arranged on the rotating disk. Positioning blocks corresponding to the second through holes one by one are sequentially arranged along the circumferential direction of the outer edge of the positioning ring. A second positioning pin is arranged on one of the positioning blocks. Sensors corresponding to the positioning blocks and the second positioning pin are respectively arranged on the frame.

[0012] As a further improvement measure of the present invention, the above-mentioned indentation mechanism includes an indentation punch and an indentation die arranged oppositely. A protrusion is provided on the outer edge of the indentation punch along its circumferential direction, and a groove is provided on the outer edge of the indentation die along its 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. A sixth driving mechanism for driving the indentation punch to move towards the indentation die is provided on the frame.

[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 oppositely. A second gap for the insulating paper to pass through is formed between the first pressing roller and the second pressing roller. 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 towards the first pressing roller are respectively provided on the frame.

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

[0015] As a further improvement measure of the present invention, the above-mentioned paper cutting mechanism includes a cutting knife horizontally arranged on a fixing plate. The cutting edge of the cutting knife corresponds to the first opening at the upper end of the first storage cavity in the storage device. A baffle is provided at the lower end of the first storage cavity. A pushing plate is arranged on the fixing plate along the longitudinal direction. The pushing plate corresponds to the second opening at the side of the first storage cavity in the storage device. A ninth driving mechanism for driving the fixing plate to move horizontally towards the storage device is provided on the frame.

[0016] As a further improvement measure of the present invention, an insulating paper forming die is provided below the above-mentioned storage device. A forming cavity is opened inside the insulating paper forming die. The forming cavity corresponds to the second storage cavity in the storage device. The cross-section of the upper end opening of the forming cavity is trapezoidal, and the cross-section of the lower end 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 inserting rod is set as the second contact surface, the upper end surface of the insulating paper cut by the cutter is in contact with the second contact surface, and corresponding first paper inserting grooves are respectively formed on two inner surfaces of the second storage cavity opposite to each other, and corresponding second paper inserting grooves are respectively formed on two inner surfaces of the forming cavity opposite to each other.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting a stator core conveying device on the frame, the present invention can be seamlessly docked 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, realizing the automation and continuous operation of stator core feeding, insulating paper inserting and processing, and stator core transmission, being applicable to the automated production of motor stators, especially applicable to scenarios with high-precision requirements such as new energy vehicle drive motors, improving the production efficiency of the entire motor stator production line, and ensuring the product quality of the motor stator; 2. Through the cooperation of the stator core lifting device, the stator core rotating device and the paper inserting device, the present invention realizes the automation and high efficiency of the process of inserting insulating paper into the stator core slots, ensures the accuracy and consistency of paper insertion, avoids the errors and unstable factors that may occur in manual paper insertion, improves the insulation performance and overall quality of the stator core, helps to improve the performance and reliability of the motor, and also simplifies the spatial structure of the online paper inserting machine for the stator assembly to the greatest extent, which is beneficial to cost savings; 3. In the paper inserting device of the present invention, by setting a storage roller, an indentation mechanism, a first feeding mechanism, a paper cutting mechanism, a second feeding mechanism and an insulating paper forming die, the insulating paper can be automatically conveyed, preformed, cut, and finally formed, and inserted into the slots of the stator core in sequence, improving the paper insertion efficiency; 4. In the stator core rotating device of the present invention, by setting a positioning ring and a sensor, it can be ensured that the angle of each rotation of the rotating disk exactly corresponds to the position of the next second through hole, that is, the slots of the stator core correspond to the paper inserting device in sequence, which plays an important role in improving the accuracy of inserting the insulating paper into the slots of the stator core. Description of the Drawings

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

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

[0021] Figure 3 is the enlarged three-dimensional view of the stator core lifting device in the present invention.

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

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

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

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

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

[0027] Figure 9 It is the other enlarged perspective view of the rotating disk and the positioning ring in the present invention.

[0028] Figure 10 It is the enlarged perspective view of the paper inserting device in the present invention.

[0029] Figure 11 It is Figure 10 the enlarged view of part A.

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

[0031] Figure 13 It is the other enlarged perspective view of the paper cutting mechanism in the present invention.

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

[0033] Description of the attached reference numerals: 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 - storage device, 16 - first storage chamber, 17 - second storage chamber, 18 - paper inserting rod, 19 - fourth driving mechanism, 20 - support base, 21 - fifth driving mechanism, 22 - positioning disk, 23 - positioning seat, 24 - first positioning pin, 25 - first through hole, 26 - fixed disk, 27 - bearing, 28 - stator core rotating device, 29 - rotating disk, 30 - synchronous pulley, 31 - first contact surface, 32 - second through hole, 33 - positioning ring, 34 - positioning block, 35 - second positioning pin, 36 - inductor, 37 - indentation punch, 38 - indentation die, 39 - protrusion, 40 - groove, 41 - first gap, 42 - sixth driving mechanism, 43 - first pressure roller, 44 - second pressure roller, 45 - second gap, 46 - seventh driving mechanism, 47 - eighth driving mechanism, 48 - first guide pipe, 49 - second guide pipe, 50 - third guide pipe, 51 - fixing plate, 52 - cutter, 53 - baffle plate, 54 - pushing plate, 55 - ninth driving mechanism, 56 - insulating paper forming die, 57 - forming cavity, 58 - first paper inserting groove, 59 - second paper inserting groove. Detailed implementation manners

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

[0035] In order to make the objectives, technical solutions and advantages of the present invention clearer, 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 used to limit the present invention.

[0036] On the contrary, the present invention covers any alternatives, modifications, equivalent methods and solutions made within the spirit and scope of the present invention defined by the claims. Further, in order to enable the public to better understand the present invention, some specific details are described in detail in the following detailed description of the present invention. Those skilled in the art can fully understand the present invention without the description of these details.

[0037] Such as Figure 1 And Figure 2An in-line paper inserting machine for a stator assembly as shown includes a frame 1. A stator core conveying device 2 is provided on the frame 1. The stator core conveying device 2 includes a conveyor belt 3 and a first driving mechanism 4 for driving the conveyor belt 3 to move. The first driving mechanism 4 can be set as a servo motor to accurately control the conveying speed of the conveyor belt 3. The feeding end of the conveyor belt 3 corresponds to the stator core production line. After being manufactured, the stator cores are arranged in sequence on the conveyor belt 3 for conveying. Baffle plates can be provided on both sides of the conveyor belt 3 to prevent the stator cores from shifting in position during conveying and ensure that the stator cores can accurately reach the discharging end. A stator core lifting device 5 is provided at the discharging end of the conveyor belt 3, and a paper inserting device 9 is provided above the stator core lifting device 5.

[0038] As Figures 1 to 7 shown, the stator core lifting device 5 includes a support base 20 and a fifth driving mechanism 21 for driving the support base 20 to make reciprocating movements in the longitudinal direction. The fifth driving mechanism 21 can be set as a cylinder or a servo motor. A positioning disk 22 is provided on the support base 20. Positioning seats 23 are sequentially arranged along the circumferential direction of the outer edge of the positioning disk 22. A first positioning pin 24 is provided on one of the positioning seats 23. During actual operation, the stator core on the conveyor belt 3 can be grabbed by a manipulator and placed on the positioning seat 23 of the positioning disk 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 the positioning seats 23 is set to 3, and all are set as L-shaped. The stator core can be positioned and limited by the positioning seats 23, so as to facilitate the subsequent processing operation of inserting insulating paper into the slots of the stator core by the paper inserting device 9.

[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 in-line 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 sequentially correspond to the paper inserting device 9 to complete the processing operation of inserting insulating paper. As Figure 1 、 Figures 3 to 7As shown, in this embodiment, a first through hole 25 for the tray 6 to pass through is formed in the inner circle of the positioning disk 22. A fixed disk 26 is arranged below the tray 6, and the tray 6 and the fixed disk 26 are rotationally connected by a bearing 27. A second driving mechanism 7 for driving the tray 6 to reciprocate in the longitudinal direction is arranged on the frame 1, and the fixed disk 26 is connected to the output shaft of the second driving mechanism 7. The second driving mechanism 7 can be set as a cylinder or a servo motor. The above settings enable the tray 6 to not only achieve reciprocating motion in the longitudinal direction but also rotate independently in the circumferential direction relative to the fixed disk 26. As another solution, the output shaft of the second driving mechanism 7 can be directly key-connected to the tray 6, which can also enable the tray 6 to achieve both reciprocating motion in the longitudinal direction and rotation in the circumferential direction.

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

[0041] As Figures 1 to 3 , Figure 8 and Figure 9 shown, a stator core rotating device 28 is arranged between the stator core lifting device 5 and the paper inserting 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 set as a first contact surface 31. Driven by the second driving mechanism 7, the tray 6 drives the stator core to move upward until the upper end surface of the stator core contacts the first contact surface 31. Second through holes 32 corresponding to the stator core slots one by one are formed in sequence along the circumferential direction of the rotating disk 29. The second through holes 32 can allow the insulating paper at the paper inserting device 9 to pass through and finally be inserted into the slots of the stator core.

[0042] A third driving mechanism 8 for driving the stator core on the tray 6 to rotate 0 - 360° in its circumferential direction is provided on the frame 1. The third driving mechanism 8 can be set as a servo motor. In this embodiment, a synchronous pulley 30 is provided on the output shaft of the third driving mechanism 8, and a synchronous belt is provided between the synchronous pulley 30 and the rotating disk 29. Since the tray 6 and the fixed disk 26 are in rotational fit, under the drive of the third driving mechanism 8, the rotating disk 29 rotates 0 - 360° in its circumferential direction, which can drive the stator core in contact with it to rotate 0 - 360° in its circumferential direction. A positioning ring 33 is provided on the rotating disk 29. Positioning blocks 34 corresponding to the second through holes 32 one by one are sequentially arranged on the outer edge of the positioning ring 33 in its circumferential direction. A second positioning pin 35 is provided on one of the positioning blocks 34, and sensors 36 corresponding to the positioning blocks 34 and the second positioning pin 35 are respectively provided on the frame 1.

[0043] The sensor 36 is electrically connected to the third driving mechanism 8. Under the induction of the sensor 36, first, the position angle of the positioning block 34 provided with the second positioning pin 35 in the circumferential direction can be determined, which is the same as the stator core slot 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 slots one by one. After the rotating disk 29 and the stator core rotate synchronously, it can also ensure that the insulating paper can be inserted into the corresponding stator core slots through each second through hole 32. Secondly, through the induction of the sensor 36 to the positioning block 34, the next rotation can be carried out after one insulating paper insertion process is completed, and it is ensured that the rotation angle of the rotating disk 29 each time exactly corresponds to the position of the next second through hole 32, that is, the slots of the stator core correspond to the paper inserting device 9 in sequence, and the process of inserting the insulating paper into the stator core slots is completed.

[0044] As Figure 2 、 Figure 10 and Figure 11 shown, the paper inserting device 9 includes a storage roller 10, a creasing 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 for storing the insulating paper on the one hand, and on the other hand, it can play a role in guiding the material and ensuring the flatness of the insulating paper during the conveying process of the insulating paper. The storage roller 10 can cooperate with a tension sensor to monitor and adjust the tension of the insulating paper in real time, ensuring that the insulating paper always maintains an appropriate tension during the conveying process and avoiding slack or breakage.

[0045] The indentation mechanism 11 includes an indentation punch 37 and an indentation die 38 which are oppositely arranged. The indentation punch 37 and the indentation die 38 are both rotatably arranged on the frame 1. A protrusion 39 is arranged on the outer edge of the indentation punch 37 along its circumferential direction, and a groove 40 is arranged on the outer edge of the indentation die 38 along its circumferential direction. The protrusion 39 and the groove 40 are adapted to each other, 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 insulating paper is extruded by the cooperation of the indentation punch 37 and the indentation die 38 to generate deformation, changing from a planar shape to a rectangular shape with one side open, corresponding to the shape of the stator core slot. At this time, it is the preformed insulating paper.

[0046] According to the different structures of the stator core slots, the indentation punch 37 and the indentation die 38 can be replaced to ensure that the preformed insulating paper can meet the paper insertion requirements of different stator cores. A sixth driving mechanism 42 for driving the indentation punch 37 to move towards the indentation die 38 is arranged on the frame 1. The sixth driving mechanism 42 can be set as a cylinder or a servo motor. By the drive of the sixth driving mechanism 42, the size of the first gap 41 can be adjusted according to the material and thickness of the insulating paper, so as to accurately adjust the indentation pressure and ensure that the indentation effect on the insulating paper meets the requirements.

[0047] The first feeding mechanism 12 includes a first pressure roller 43 and a second pressure roller 44 which are oppositely arranged. The first pressure roller 43 and the second pressure roller 44 are both rotatably arranged on the frame 1. A second gap 45 for the insulating paper to pass through is formed between the first pressure roller 43 and the second pressure roller 44. A seventh driving mechanism 46 for driving the first pressure roller 43 to rotate and an eighth driving mechanism 47 for driving the second pressure roller 44 to move towards the first pressure roller 43 are respectively arranged on the frame 1. The seventh driving mechanism 46 can be set as a servo motor. In this embodiment, a first pressure roller 43 and a first transmission gear are respectively arranged on the output shaft of the seventh driving mechanism 46, a second transmission gear is arranged on the second pressure roller 44, and the first transmission gear and the second transmission gear are meshed with each other. Driven by the seventh driving mechanism 46, the first pressure roller 43 and the first transmission gear rotate, driving the second transmission gear and the second pressure roller 44 to rotate, realizing the conveying of the insulating paper. The eighth driving mechanism 47 can be set as a cylinder or a servo motor. By the drive of the eighth driving mechanism 47, the size of the second gap 45 can be adjusted.

[0048] Such as Figure 1 、 Figure 10 、 Figure 12 and Figure 13As shown in the figure, a second feeding mechanism 14 is provided on one side of the paper cutting mechanism 13. The second feeding mechanism 14 includes a storage device 15. A first storage cavity 16 and a second storage cavity 17 which are connected and penetrate the storage device 15 in the longitudinal direction are formed in the storage device 15. 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 conveys the preformed insulating paper into the first storage cavity 16. The paper cutting mechanism 13 includes a cutting knife 52 horizontally arranged on the fixed plate 51. The cutting edge of the cutting knife 52 corresponds to the first opening at the upper end of the first storage cavity 16 in the storage device 15 to ensure the flatness of the cut of the insulating paper. A pushing plate 54 is arranged on the fixed plate 51 in the longitudinal direction. The pushing plate 54 corresponds to the second opening on the side of the first storage cavity 16 in the storage device 15. A ninth driving mechanism 55 for driving the fixed plate 51 to move horizontally towards the storage device 15 is arranged on the frame 1. The ninth driving mechanism 55 can be set as a cylinder or a servo motor.

[0049] Driven by the ninth driving mechanism 55, the fixed plate 51 drives the cutting knife 52 and the pushing plate 54 to move synchronously towards the storage device 15. The cutting knife 52 is used to cut the insulating paper, and the pushing plate 54 is used to push the cut insulating paper in the first storage cavity 16 into the second storage cavity 17. A baffle 53 is arranged at the lower end of the first storage cavity 16. The baffle 53 and the storage device 15 can be of an integral structure. Such a setting can prevent the cut insulating paper from falling from the lower end of the first storage cavity 16. An inserting rod 18 is arranged above the second storage cavity 17, and a fourth driving mechanism 19 for driving the inserting rod 18 to penetrate the second storage cavity 17 in the longitudinal direction. The fourth driving mechanism 19 can be set as a cylinder or a servo motor. Driven by the fourth driving mechanism 19, the inserting rod 18 pushes the insulating paper located in the second storage cavity 17 downward so that it can pass through the second through hole 32 on the rotating disk 29 and enter the slot of the stator core. To ensure the accurate positioning and feeding ability of the inserting rod 18, a guide rail is arranged on the frame 1 along the driving direction of the fourth driving mechanism 19. A guide block is arranged on the inserting rod 18. The guide rail and the guide block cooperate to slide so that the inserting rod 18 can accurately insert into the second storage cavity 17 and accurately insert the insulating paper into the slot of the stator core.

[0050] Since one side of the preformed insulating paper has an opening, the opening will open during the conveying process and the insulating paper will become a trapezoid. 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 the figure, in this embodiment, an insulating paper forming die 56 is provided below the storage device 15. A forming cavity 57 is formed inside the insulating paper forming die 56. The forming cavity 57 corresponds to the second storage cavity 17 in the storage device 15. The cross-section of the upper end opening of the forming cavity 57 is trapezoidal to facilitate the entry of the insulating paper, and the cross-section of the lower end opening of the forming cavity 57 is rectangular, corresponding to the shape of the stator core slot. The insulating paper formed by the insulating paper forming die 56 is directly inserted into the slot of the stator core under the push of the paper inserting rod 18. The distance between the insulating paper forming die 56 and the rotating disk 29 is relatively close, which can largely prevent the formed insulating paper from deforming and being incompatible with the stator core slot.

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

[0052] In order to protect the insulating paper during the conveying process, in this embodiment, a first guide pipe 48 is provided between the storage roller 10 and the indentation mechanism 11. A third through hole for the insulating paper to pass through is formed inside the first guide pipe 48. A second guide pipe 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 formed inside the second guide pipe 49. A third guide pipe 50 is provided between the first feeding mechanism 12 and the storage device 15. A fifth through hole for the insulating paper to pass through is formed inside the third guide pipe 50. The axes of the third through hole, the fourth through hole, and the fifth through hole coincide, which can prevent the insulating paper from bending or folding during the conveying process. The fifth through hole corresponds to the first storage cavity 16 in the storage device 15, that is, the insulating paper sent out by the first feeding mechanism 12 enters the first storage cavity 16 of the storage device 15 through the fifth through hole in the third guide pipe 50.

[0053] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. For those of ordinary skill in the art, several variations and improvements can be made without departing from the scope of the present invention, and these should also be regarded as belonging to the protection scope of the present invention.

Claims

1. An in-line paper inserting machine for a stator assembly, comprising a frame (1), characterized in that, A stator core conveying device (2) is provided on the frame (1). The stator core conveying device (2) includes a conveyor belt (3) and a first driving mechanism (4) for driving the conveyor belt (3) to move. An end of the conveyor belt (3) where materials are discharged is provided with a stator core lifting device (5). The stator core lifting device (5) includes a tray (6) for placing the stator core. 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 - 360° in its circumferential direction are respectively provided on the frame (1). An inserting paper device (9) is arranged above the stator core lifting device (5). The inserting paper 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. A second feeding mechanism (14) is arranged on one side of the paper cutting mechanism (13). The second feeding mechanism (14) includes a storage device (15). A first storage cavity (16) and a second storage cavity (17) which are communicated with each other and penetrate through the storage device (15) in the longitudinal direction are formed in the storage device (15). 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). An inserting paper rod (18) is arranged above the second storage cavity (17), and a fourth driving mechanism (19) for driving the inserting paper rod (18) to penetrate through the second storage cavity (17) in the longitudinal direction is provided.

2. The in-line paper inserting machine for the 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. A positioning disk (22) is arranged on the support seat (20). Positioning seats (23) are sequentially arranged on the outer edge of the positioning disk (22) in its circumferential direction. A first positioning pin (24) is arranged on one of the positioning seats (23). A first through hole (25) for the tray (6) to pass through is formed in the inner circle of the positioning disk (22). A fixed disk (26) is arranged below the tray (6). The tray (6) is rotatably connected to the fixed disk (26) through a bearing (27). The fixed disk (26) is connected to the output shaft of the second driving mechanism (7).

3. The on-line paper inserting machine for the stator assembly according to claim 2, characterized in that, A stator core rotating device (28) is provided between the stator core lifting device (5) and the paper inserting device (9). The stator core rotating device (28) includes a rotating disk (29) corresponding to the tray (6). A synchronous pulley (30) is provided on the output shaft of the third driving mechanism (8). A synchronous belt is provided between the synchronous pulley (30) and the rotating disk (29). The lower surface of the rotating disk (29) is set as a first contact surface (31), and the first contact surface (31) is in contact with the upper end surface of the stator core on the tray (6). Second through holes (32) corresponding to the stator core slots one by one are sequentially formed on the rotating disk (29) along its circumferential direction.

4. The online paper inserting machine for the stator assembly according to claim 3, wherein, A positioning ring (33) is provided on the rotating disk (29). Positioning blocks (34) corresponding to the second through holes (32) one by one are sequentially arranged on the outer edge of the positioning ring (33) along its circumferential direction. A second positioning pin (35) is provided on one of the positioning blocks (34). Sensors (36) corresponding to the positioning blocks (34) and the second positioning pin (35) are respectively provided on the frame (1).

5. The on-line paper inserting machine for the stator assembly according to any one of claims 1 to 4, characterized in that, The indentation mechanism (11) includes an indentation punch (37) and an indentation die (38) which are arranged oppositely. A protrusion (39) is arranged on the outer edge of the indentation punch (37) along its circumferential direction. A groove (40) is arranged on the outer edge of the indentation die (38) along its circumferential direction. The protrusion (39) is adapted to the groove (40). 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). A sixth driving mechanism (42) for driving the indentation punch (37) to move towards the indentation die (38) is provided on the frame (1).

6. The in-line paper inserting machine for a stator assembly according to claim 5, characterized in that, The first feeding mechanism (12) includes a first pressing roller (43) and a second pressing roller (44) which are arranged oppositely. 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). 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 towards the first pressing roller (43) are respectively provided on the frame (1).

7. The on-line paper inserting machine for a stator assembly according to claim 6, characterized in that, A first guide pipe (48) is arranged between the material storage roller (10) and the indentation mechanism (11). A third through hole for the insulating paper to pass through is formed in the first guide pipe (48). A second guide pipe (49) is arranged between the indentation mechanism (11) and the first feeding mechanism (12). A fourth through hole for the insulating paper to pass through is formed in the second guide pipe (49). A third guide pipe (50) is arranged between the first feeding mechanism (12) and the material storage device (15). A fifth through hole for the insulating paper to pass through is formed in the third guide pipe (50). The axes of the third through hole, the fourth through hole and the fifth through hole coincide. The fifth through hole corresponds to the first material storage cavity (16) in the material storage device (15).

8. The on-line paper inserting machine for the stator assembly according to claim 7, characterized in that, The paper cutting mechanism (13) includes a cutting knife (52) horizontally arranged on a fixed plate (51). The cutting edge of the cutting knife (52) corresponds to the first opening at the upper end of the first material storage cavity (16) in the material storage device (15). A baffle (53) is arranged at the lower end of the first material storage cavity (16). A pushing plate (54) is arranged on the fixed plate (51) in the longitudinal direction. The pushing plate (54) corresponds to the second opening on the side of the first material storage cavity (16) in the material storage device (15). A ninth driving mechanism (55) for driving the fixed plate (51) to move horizontally towards the material storage device (15) is arranged on the frame (1).

9. The online paper inserting machine for a stator assembly according to claim 8, characterized in that, An insulating paper forming die (56) is arranged below the material storage device (15). A forming cavity (57) is formed inside the insulating paper forming die (56). The forming cavity (57) corresponds to the second material storage cavity (17) in the material storage device (15). The cross section of the upper end opening of the forming cavity (57) is trapezoidal, and the cross section of the lower end opening of the forming cavity (57) is rectangular.

10. The on-line paper inserting machine for the stator assembly according to claim 9, characterized in that, The lower end surface of the paper inserting rod (18) is set as a second contact surface. The upper end surface of the insulating paper cut by the cutting knife (52) is in contact with the second contact surface. Corresponding first paper inserting grooves (58) are respectively formed on two opposite inner surfaces of the second material storage cavity (17). Corresponding second paper inserting grooves (59) are respectively formed on two opposite inner surfaces of the forming cavity (57).

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