An outer pressing device for pressing the end copper wire of a stator winding into a slit
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-01
- Publication Date
- 2026-08-11
AI Technical Summary
在步骤R2~R3中，一个定子绕组中、待外撑压紧的末端铜线6数量多达6个，工人用镊子这样一个接着一个将各个线圈5的末端铜线6外撑压紧到狭缝中，这不仅增加了工人的工作强度，而且还造成外撑压紧末端铜线6所消耗时间长，进而降低了外撑压紧末端铜线6的效率
[0014] The present invention has the following advantages: it greatly reduces the labor intensity of workers and greatly improves the efficiency of external support and clamping of copper wire at the end.
Smart Images
Figure CN122553639A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of pressing the end copper wires of a multi-coil stator winding into a slit, and in particular to an external pressing device for pressing the end copper wires of a stator winding into a slit. Background Technology
[0002] An electric motor contains stator windings and rotor windings. The stator windings are responsible for generating a rotating magnetic field, while the rotor windings cut the magnetic field to generate induced electromotive force and current, thereby realizing energy conversion. Different types of stator windings have different structures.
[0003] A workshop produced a batch of such Figures 1-4 The stator winding shown includes an aperture 1 and an annular circuit board 2. Multiple iron cores 4 are fixed on the inner wall of the central hole 3 of the aperture 1 and around its circumference. The top and bottom surfaces of the iron cores 4 are flush with the top and bottom surfaces of the aperture 1, respectively. Multiple turns of copper coils 5 are wound around the outside of each iron core 4, and the copper wires 6 at the ends of each coil 5 are vertically upward. Multiple slots 7 are opened on the inner wall of the annular circuit board 2. The bottom surface of the annular circuit board 2 is fixed on the top surface of each coil 5, and each slot 7 in the annular circuit board 2 is respectively fitted onto the outside of the copper wires 6 at the ends of each coil 5.
[0004] After a batch of stator windings is produced in the workshop, the process requires that the copper wires 6 at the ends of the multiple coils 5 of the stator windings be stretched and pressed into the slits (the slits are the area enclosed by the top surface of the coils 5 and the bottom surface of the ring circuit board 2). In other words, the copper wires 6 at the ends of the coils 5 are bent and deformed and inserted into the slits, which makes it easier for workers to weld the bent and deformed copper wires 6 onto the ring circuit board 2 more firmly later. In other words, it is more conducive to workers to weld the copper wires 6 onto the ring circuit board 2.
[0005] The method used by the workers in the workshop to externally push and press the copper wires 6 at the ends of multiple coils 5 of a batch of stator windings into the narrow slits is as follows: R1. The worker takes out a stator winding and supports the bottom surfaces of each coil 5 of the stator winding on the table surface. R2. Use tweezers to hold the copper wire 6 at the end of coil 5, and then press the copper wire 6 towards the slit to press the copper wire 6 at the end of coil 5 into the corresponding slit. R3. The worker repeats step R2 multiple times to push and press the end copper wires 6 of the other coils 5 of the stator winding into the slit, thus finally achieving the goal of pushing and pressing the end copper wires 6 of the multiple coils 5 of the first stator winding into the slit. R4. Workers repeat steps R1 to R3 multiple times to externally push and press the copper wires 6 at the ends of multiple coils 5 of a batch of stator windings into the slit.
[0006] However, although this method can compress the end copper wires 6 of multiple coils 5 of a batch of stator windings into the slits, it still has the following technical defects in actual operation: In steps R2 to R3, there are as many as 6 end copper wires 6 in a stator winding that need to be externally supported and pressed. Workers use tweezers to externally support and press the end copper wires 6 of each coil 5 into the slit one by one. This not only increases the workload of the workers, but also makes the time spent on externally supporting and pressing the end copper wires 6 long, thereby reducing the efficiency of externally supporting and pressing the end copper wires 6.
[0007] Therefore, there is an urgent need for a device that can greatly reduce the workload of workers and greatly improve the efficiency of external support and clamping of the copper wire at the end. Summary of the Invention
[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide an external support clamping device for pressing the end copper wire of the stator winding into a slit.
[0009] The objective of this invention is achieved through the following technical solution: an external support pressing device for pressing the end copper wire of a stator winding into a slit, comprising an external support assembly and a positioning assembly for positioning the stator winding, wherein the positioning assembly comprises a base and a cylindrical platform, the cylindrical platform being fixed on the top surface of the base, and the top surface of the cylindrical platform having a central positioning blind hole. The external support assembly includes a circular disk with a circular countersunk hole in the center of the top surface of the disk. Four T-shaped grooves are formed on the top surface of the disk around the circumference of the countersunk hole. The inner ports of the T-shaped grooves are connected to the countersunk hole, and the outer ports of the T-shaped grooves penetrate the outer cylindrical surface of the disk. A circular block is fixed on the bottom surface of the circular disk, located directly below the circular countersunk hole, and the circular block cooperates with the central positioning blind hole inside the cylindrical platform. A long rod is fixed to the bottom of the circular countersunk hole of the circular disc. The long rod extends upward and a column head is fixed to the extended end. An annular plate is slidably sleeved on the long rod. A vertical spring is fixed to the top surface of the annular plate and sleeved outside the long rod. The top end of the vertical spring is fixed to the bottom surface of the column head. A sliding sleeve is slidably sleeved outside the long rod on the bottom surface of the annular plate. The bottom end of the sliding sleeve has a tapered surface. Under the elastic force of the vertical spring, the bottom surface of the sliding sleeve presses against the bottom of the circular countersunk hole. Each of the four T-shaped slots of the circular disk has a T-shaped slider that is slidably installed in it. Each of the four T-shaped sliders has an arc-shaped plate fixed on its top surface. An outer support plate extending out of the circular disk is fixed on the outer edge of the arc-shaped plate. A vertical block is fixed on the inner end of the arc-shaped plate. An arc-shaped groove facing the sliding sleeve is opened on the inner end face of the vertical block. A rubber ring is fitted around the cylinder formed by the vertical blocks on the four arc-shaped plates. Each of the four T-slots contains a steel ball located between the sliding sleeve and the T-shaped slider. Under the elastic force of the rubber ring, the steel ball abuts against the outer cylindrical surface of the sliding sleeve.
[0010] The cylindrical platform and the base of the positioning component are coaxially arranged.
[0011] The circular disc, long rod, annular plate, and sliding sleeve of the external support assembly are coaxially arranged.
[0012] The four T-shaped grooves on the circular disk are evenly distributed on the outside of the long rod, and a weight-reducing groove penetrating the bottom surface of the circular disk is opened between each two adjacent T-shaped grooves.
[0013] Four curved plates are evenly distributed on the outside of the long rod, with a gap between each pair of adjacent curved plates.
[0014] The present invention has the following advantages: it greatly reduces the labor intensity of workers and greatly improves the efficiency of external support and clamping of copper wire at the end. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of a stator winding in the prior art; Figure 2 for Figure 1 The main view; Figure 3 for Figure 1 Top view; Figure 4 for Figure 1 A schematic diagram showing the connection between the aperture and the iron core; Figure 5 This is a schematic diagram of the positioning component of the present invention; Figure 6 for Figure 5 The main view; Figure 7 A schematic diagram of the external support component of the present invention; Figure 8 for Figure 7 P-direction schematic diagram; Figure 9 for Figure 7 A schematic diagram showing the connection between the curved plate, the outer support plate, and the vertical block; Figure 10 To remove Figure 7 A schematic diagram of the arc-shaped plate in the middle; Figure 11 for Figure 7 A schematic diagram of the circular disk structure in the image; Figure 12 for Figure 11 Top view; Figure 13 for Figure 7 A schematic diagram showing the connection between the annular plate and the sliding sleeve; Figure 14 for Figure 7 A schematic diagram showing the connection between the circular disk, long rod, annular plate, and sliding sleeve in the diagram; Figure 15 A schematic diagram illustrating the installation of the stator windings; Figure 16 for Figure 15 The main view; Figure 17 A schematic diagram showing how to retract all four outer support plates to directly above the circular disc; Figure 18 To remove Figure 17 A schematic diagram of the arc-shaped plate in the middle; Figure 19 This is a schematic diagram of the external support component being installed onto the positioning component; Figure 20 for Figure 19 The main view; In the picture: 1-Aperture, 2-Ring circuit board, 3-Center hole, 4-Iron core, 5-Coil, 6-End copper wire, 7-Slot; 8-Base, 9-Cylindrical platform, 10-Center positioning blind hole; 11-Circular disc, 12-Circular countersunk hole, 13-T-groove, 14-Circular block, 15-Long rod, 16-Column head, 17-Annular plate, 18-Vertical spring, 19-Sliding sleeve, 20-Conical surface, 21-T-shaped slider, 22-Arc plate, 23-Outer support plate, 24-Standing block, 25-Arc groove, 26-Rubber ring, 27-Steel ball, 28-Weight reduction groove. Detailed Implementation
[0016] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description: like Figures 5-14 As shown, an external support clamping device for pressing the end copper wire of a stator winding into a slit includes an external support assembly and a positioning assembly for positioning the stator winding. The positioning assembly includes a base 8 and a cylindrical platform 9. The cylindrical platform 9 is fixed on the top surface of the base 8 and has a central positioning blind hole 10 on the top surface of the cylindrical platform 9. The cylindrical platform 9 and the base 8 of the positioning assembly are coaxially arranged.
[0017] The external support assembly includes a circular disk 11. A circular countersunk hole 12 is provided in the center of the top surface of the circular disk 11. Four T-shaped grooves 13 are provided on the top surface of the circular disk 11 and around the circumference of the circular countersunk hole 12. The inner ports of the T-shaped grooves 13 are all connected to the circular countersunk hole 12, and the outer ports of the T-shaped grooves 13 penetrate the outer cylindrical surface of the circular disk 11. A circular block 14 is fixed on the bottom surface of the circular disk 11, located directly below the circular countersunk hole 12. The circular block 14 cooperates with the central positioning blind hole 10 in the cylindrical platform 9. A long rod 15 is fixed at the bottom of the circular countersunk hole 12 of the circular disk 11. The long rod 15 extends upward and a column head 16 is fixed at the extended end. An annular plate 17 is slidably sleeved on the long rod 15. A vertical spring 18 is fixed on the top surface of the annular plate 17 and sleeved outside the long rod 15. The top end of the vertical spring 18 is fixed on the bottom surface of the column head 16. A sliding sleeve 19 is slidably sleeved on the bottom surface of the annular plate 17 and sleeved outside the long rod 15. A tapered surface 20 is opened at the bottom end of the sliding sleeve 19. Under the elastic force of the vertical spring 18, the bottom surface of the sliding sleeve 19 presses against the bottom of the circular countersunk hole 12.
[0018] Each of the four T-shaped slots 13 of the circular disk 11 has a T-shaped slider 21 that is slidably installed in it. Each of the four T-shaped sliders 21 has an arc-shaped plate 22 fixed on its top surface. An outer support plate 23 extending outside the circular disk 11 is fixed on the outer edge of the arc-shaped plate 22. A vertical block 24 is fixed on the inner end of the arc-shaped plate 22. An arc-shaped groove 25 facing the sliding sleeve 19 is opened on the inner end face of the vertical block 24. A rubber ring 26 is fitted around the cylinder formed by the vertical blocks 24 on the four arc-shaped plates 22.
[0019] Each of the four T-slots 13 contains a steel ball 27 located between the sliding sleeve 19 and the T-slider 21. Under the elastic force of the rubber ring 26, the steel ball 27 abuts against the outer cylindrical surface of the sliding sleeve 19.
[0020] The circular disk 11, long rod 15, annular plate 17, and sliding sleeve 19 of the external support assembly are coaxially arranged. Four T-shaped grooves 13 on the circular disk 11 are evenly distributed on the outside of the long rod 15, and a weight-reducing groove 28 penetrating the bottom surface of the circular disk 11 is formed between each pair of adjacent T-shaped grooves 13. Four arc-shaped plates 22 are evenly distributed on the outside of the long rod 15, with a gap between each pair of adjacent arc-shaped plates 22.
[0021] The method for externally pressing the end copper wires 6 of multiple coils 5 of a batch of stator windings into the slit is as follows: S1, the worker removes as follows Figures 5-6 The positioning component shown is placed with its base 8 flat on the table surface. S2, The worker takes out a... Figure 1The stator winding shown is assembled by placing the area enclosed by the individual coils 5 of the stator winding around the cylindrical platform 9 of the positioning assembly, and then supporting each coil 5 of the stator winding on the top surface of the base 8, thereby achieving the installation of the stator winding. Figures 15-16 As shown; S3. The worker retracts all four outer support plates 23 of the outer support assembly to directly above the circular disk 11. The specific operating steps are as follows: S31, The worker takes out a... Figures 7-8 As shown in the external support assembly, the worker lifts the annular plate 17 of the external support assembly upwards by hand. The annular plate 17 compresses the vertical spring 18 upwards. At the same time, the annular plate 17 drives the sliding sleeve 19 to move upwards along the long rod 15. The sliding sleeve 19 gradually separates from the steel ball 27 in the height direction. When the sliding sleeve 19 and the steel ball 27 are misaligned in the height direction, under the elastic force of the rubber ring 26, all four upright blocks 24 move inward. The upright blocks 24 drive the arc plate 22 to move inward, the arc plate 22 drives the T-shaped slider 21 to move inward, and the T-shaped slider 21 pushes the corresponding steel ball 27 to move inward synchronously until the steel ball 27 abuts against the outer cylindrical surface of the long rod 15. At the same time, the four arc plates 22 are joined together, and all four outer support plates 23 retract to directly above the circular disk 11. Figures 17-18 As shown; S32. The worker holds the annular plate 17 still with his hand. S4. The worker moves the external support assembly, inserting the circular block 14 of the external support assembly from top to bottom into the center positioning blind hole 10 of the cylindrical platform 9 of the positioning assembly, and supports the circular disk 11 of the external support assembly on the top surface of the cylindrical platform 9, thereby installing the external support assembly onto the positioning assembly. Figures 19-20 As shown, at this time, the slits formed by the top surface of each coil and the bottom surface of the ring circuit board are all on the same horizontal plane as the four outer support plates. S5. The worker releases his grip on the annular plate 17. At this moment, under the elastic restoring force of the vertical spring 18, the annular plate 17 drives the sliding sleeve 19 to move downward along the long rod 15. The sliding sleeve 19 drives the conical surface 20 to move downward simultaneously. The conical surface 20 pushes the steel ball 27 to move outward along the T-groove 13. The steel ball 27 pushes the T-shaped slider 21 in the T-groove 13 to move outward simultaneously along the T-groove 13. The T-shaped slider 21 drives the arc plate 22 to move outward simultaneously along the T-groove 13. The arc plate 22 drives the vertical block 24 and the outer support plate 23 on it to move outward simultaneously. Among them, the vertical block 24 expands the rubber ring 26 outward. At the same time, the outer support plate 23 moves towards the end copper wire 6 of the coil 5. The direction of movement of the outer support plate 23 is as follows. Figure 19 As indicated by the middle arrow; When the vertical spring 18 returns to its initial state, each end copper wire 6 is pressed into the slit by the outer support plate 23, thus finally achieving the goal of pressing the end copper wires 6 of the multiple coils 5 of the first stator winding into the slit. In step S2, the worker first positions the stator winding on the positioning assembly; then in step S3, the pressing ring plate is lifted upward so that all four outer support plates 23 are retracted to directly above the circular disk 11; then in step S4, the outer support assembly is installed on the positioning assembly; finally, in step S5, the worker releases the ring plate 17, and the vertical spring 18, which is in a compressed state, drives the four outer support plates to move simultaneously toward the slit under the elastic restoring force, thereby pressing the end copper wires 6 of each coil of the stator winding into the slit at the same time through the four outer support plates.
[0022] Therefore, compared with the existing external support and clamping method, this support and clamping device eliminates the need for workers to use tweezers to clamp the copper wires at the ends of each coil into the slit one by one. This not only greatly reduces the workload of workers, but also shortens the time consumed in clamping the copper wires at the ends, thereby greatly improving the efficiency of clamping the copper wires at the ends.
[0023] S6. The specific steps for removing the first stator winding are as follows: the worker lifts the annular plate 17 upwards by hand so that all four outer support plates 23 of the outer support assembly are retracted to the top of the circular disk 11; then the outer support assembly is removed from the positioning assembly; finally, the worker lifts the stator winding upwards to remove the stator winding from the cylindrical platform 9. S7. The worker repeats steps S1 to S6 multiple times to press the copper wires 6 at the ends of multiple coils 5 of a batch of stator windings into the slit.
[0024] Furthermore, because this external support clamping device shortens the external support clamping time for the end copper wires of each coil of a single stator winding, it can quickly process a batch of stator windings in the workshop, thereby greatly increasing the output of finished stator windings.
Claims
1. An external support clamping device for pressing the end copper wire of a stator winding into a slit, characterized in that: It includes an external support assembly and a positioning assembly for positioning the stator winding. The positioning assembly includes a base (8) and a cylindrical platform (9). The cylindrical platform (9) is fixed on the top surface of the base (8). The top surface of the cylindrical platform (9) has a central positioning blind hole (10). The external support assembly includes a circular disk (11), a circular countersunk hole (12) is provided in the center of the top surface of the circular disk (11), and four T-shaped grooves (13) are provided on the top surface of the circular disk (11) and around the circumference of the circular countersunk hole (12). The inner ports of the T-shaped grooves (13) are all connected to the circular countersunk hole (12), and the outer ports of the T-shaped grooves (13) penetrate the outer cylindrical surface of the circular disk (11). A circular block (14) is fixed on the bottom surface of the circular disk (11) and located directly below the circular countersunk hole (12). The circular block (14) cooperates with the central positioning blind hole (10) in the cylindrical platform (9). A long rod (15) is fixed at the bottom of the circular countersunk hole (12) of the circular disc (11). The long rod (15) extends upward and a column head (16) is fixed at the extended end. An annular plate (17) is slidably sleeved on the long rod (15). A vertical spring (18) is fixed on the top surface of the annular plate (17) and sleeved outside the long rod (15). The top end of the vertical spring (18) is fixed on the bottom surface of the column head (16). A sliding sleeve (19) is slidably sleeved outside the long rod (15) on the bottom surface of the annular plate (17). A tapered surface (20) is opened at the bottom end of the sliding sleeve (19). Under the elastic force of the vertical spring (18), the bottom surface of the sliding sleeve (19) presses against the bottom of the circular countersunk hole (12). Each of the four T-shaped grooves (13) of the circular disk (11) has a T-shaped slider (21) that slides and engages with it. Each of the four T-shaped sliders (21) has an arc plate (22) fixed on its top surface. An outer support plate (23) extending out of the circular disk (11) is fixed on the outer edge of the arc plate (22). A vertical block (24) is fixed on the inner end of the arc plate (22). An arc groove (25) facing the sliding sleeve (19) is opened on the inner end face of the vertical block (24). A rubber ring (26) is fitted around the cylinder formed by the vertical blocks (24) on the four arc plates (22). Each of the four T-slots (13) contains a steel ball (27) located between the sliding sleeve (19) and the T-slider (21). Under the elastic force of the rubber ring (26), the steel ball (27) abuts against the outer cylindrical surface of the sliding sleeve (19).
2. The external support clamping device for pressing the end copper wire of the stator winding into the slit according to claim 1, characterized in that: The cylindrical platform (9) and the base (8) of the positioning component are coaxially arranged.
3. The external support clamping device for pressing the end copper wire of the stator winding into the slit according to claim 1, characterized in that: The circular disk (11), long rod (15), annular plate (17), and sliding sleeve (19) of the external support assembly are coaxially arranged.
4. The external support clamping device for pressing the end copper wire of the stator winding into the slit according to claim 1, characterized in that: The four T-shaped grooves (13) on the circular disk (11) are evenly distributed on the outside of the long rod (15), and a weight-reducing groove (28) penetrating the bottom surface of the circular disk (11) is opened between each two adjacent T-shaped grooves (13).
5. The external support clamping device for pressing the end copper wire of the stator winding into the slit according to claim 1, characterized in that: Four curved plates (22) are evenly distributed on the outside of the long rod (15), and there is a gap between each two adjacent curved plates (22).