An automatic pressing device for flat wire hairpin coils and stator cores

Abstract

The present invention discloses an automatic pressing device for a flat wire hairpin coil and a stator core. The automatic pressing device includes a frame body fixedly connected with a servo motor, a lead screw assembly, and a linear guide rail; the servo motor is connected to the lead screw assembly; the nut of the lead screw assembly is fixedly connected with a connecting plate; the slider of the linear guide rail is fixedly connected with the connecting plate; the connecting plate is fixedly connected with a floating plate; on the floating plate, there are fixedly connected an end face positioning disc for a special-shaped flat wire hairpin and a cylinder; under the floating plate, there are fixedly connected a slot positioning disc for a special-shaped flat wire hairpin and an end tooth inserting positioning disc for a hairpin coil; the cylinder rod of the cylinder is connected to the turntable of the end tooth inserting positioning disc for a hairpin coil; on the die plate, there is fixedly connected a positioning key. The present invention has the advantages of overall positioning and protection of the hairpin coil at the end, accurately pressing it into the respective opposite slots of the stator core, accurate consistency of the end coil after pressing, and the servo-controlled stroke can realize the automatic pressing of the hairpin coil and the stator core with different stack thicknesses.

Description

Technical Field

[0001] The invention belongs to the technical field of electrical machinery equipment, and relates to an automatic pressing device for a flat wire hairpin coil and a stator core. Background Art

[0002] At present, the method used by the automatic pressing device for flat wire hairpin coils and stator cores in the manufacture of motor stators is: placing the core in a simple positioning jig, using manpower to transport the core and position the flat wire, and manually pressing the flat wire hairpin coils into the stator core. The problems with this automatic pressing device for flat wire hairpin coils and stator cores are: low efficiency, requiring manpower, inaccurate positioning, no automation, and no automatic pressing function for stator cores and flat wire hairpin coils with different stacking thicknesses. Summary of the invention

[0003] The purpose of the invention is to provide a device for automatically pressing a flat wire hairpin coil into a stator core.

[0004] The technical scheme of the present invention is: a device for automatically pressing a flat wire hairpin coil into a stator core, characterized in that: a servo motor and a linear guide are installed on a frame; the servo motor is connected to a lead screw; a nut on the lead screw is fixedly connected to a connecting plate; a slider is provided on the linear guide and is fixedly connected to a connecting plate; the connecting plate is fixedly connected to a floating plate; a special-shaped flat wire hairpin end face positioning disk and a cylinder are provided on the floating plate; a special-shaped flat wire hairpin groove positioning disk 8 is provided under the floating plate, and the hairpin coil end gear positioning disk is fixedly connected; a special-shaped flat wire hairpin groove positioning disk is provided on the It serves as the overall guiding chamfer of the flat wire coil, the guiding chamfer of the card-leading wire, the end face positioning surface of the flat wire coil, and the positioning groove of the card-leading wire; the toothing positioning disk at the end of the card-leading coil includes an upper toothing positioning disk, a rotating disk, a toothing, and a lower guiding positioning disk; the cylinder rod of the cylinder is connected to the rotating disk of the toothing positioning disk at the end of the card-leading coil, and the rotating disk is provided with a cam groove; the toothing is provided with a slot paper giving way protection groove and a card-leading support fillet; the mold disk is fixedly connected to the frame; the mold disk is fixedly connected to the positioning key; the positioning key is provided with a positioning protrusion and a chamfer.

[0005] Beneficial effects: Due to the adoption of the above technical scheme, the overall positioning and protection of the end of the flat wire hairpin coil is achieved through the special-shaped flat wire hairpin end face positioning plate, the special-shaped flat wire hairpin groove positioning plate, and the hairpin coil end tooth positioning plate. The servo motor drives the screw assembly to rotate and drives the flat wire hairpin coil to move downward and accurately press it into the relative slots of the stator core, ensuring the accurate relative position of each hairpin at the end and the accurate consistency of the end coil after pressing. The servo control stroke can realize the automatic pressing of the hairpin coil and the stator core with different stack thicknesses, which has the advantages of universality, automation, high efficiency and speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0007] Figure 1 It is the front view of the present invention.

[0008] Figure 2 A cross-sectional view showing the accurate positioning of the flat wire hairpin coil and the positioning plate.

[0009] Figure 3 This is the front view of the positioning plate of the special-shaped flat wire hairpin slot.

[0010] Figure 4 for Figure 3 BB cross-sectional view.

[0011] Figure 5 This is the front view of the turntable.

[0012] Figure 6 This is the front view of the gear.

[0013] Figure 7 This is the main view of the positioning key.

[0014] In the figure: 1. frame; 2. servo motor; 3. lead screw assembly; 4. linear guide rail; 5. connecting plate; 6. floating plate; 7. positioning plate for the end face of special-shaped flat wire hairpin; 8. positioning plate for the slot of special-shaped flat wire hairpin; 9. cylinder; 10. upper positioning plate for inserting gear; 11. turntable; 12. inserting gear; 13. lower guide positioning plate for inserting gear; 14. die plate; 15. positioning key; 16. overall guide chamfer of flat wire coil; 17. guide chamfer of lead-out hairpin; 18. positioning surface of the end face of flat wire coil; 19. positioning slot for lead-out hairpin; 20. slot paper giving way protection slot; 21. hairpin support fillet; 22. positioning protrusion; 23. chamfer; 24. cam slot. DETAILED DESCRIPTION

[0015] refer to Figures 1-7A device for automatically pressing a flat wire hairpin coil into a stator core, wherein a servo motor 2 and a linear guide rail 4 are installed on a frame 1; the servo motor 2 is connected to a lead screw 3; a nut on the lead screw 3 is fixedly connected to a connecting plate 5; a slider is provided on the linear guide rail 4 and is fixedly connected to the connecting plate 5; the connecting plate 5 is fixedly connected to a floating plate 6; a special-shaped flat wire hairpin end face positioning plate 7 and a cylinder 9 are provided on the floating plate 6; a special-shaped flat wire hairpin groove positioning plate 8 and a hairpin coil end toothed positioning plate are fixedly connected under the floating plate 6; a chamfer 16 as a guide for the flat wire coil as a whole is provided on the special-shaped flat wire hairpin groove positioning plate 8, and a hairpin coil lead-out chamfer 16 is provided on the hairpin groove positioning plate 8 Guide chamfer 17, flat wire coil end face positioning surface 18, lead-out hairpin wire positioning groove 19; the hairpin coil end gear positioning disk includes a gear upper positioning disk 10, a turntable 11, a gear 12, and a gear lower guide positioning disk 13; the cylinder rod of the cylinder 9 is connected to the turntable 11 of the hairpin coil end gear positioning disk, and the turntable 11 is provided with a cam groove 24; the gear 12 is provided with a slot paper giving way protection groove 20 and a hairpin support fillet 21; the mold plate 14 is fixedly connected to the frame 1; the mold plate 14 is fixedly connected to the positioning key 15; the positioning key 15 is provided with a positioning protrusion 22 and a chamfer 23.

[0016] Working principle:

[0017] The servo motor 2 starts, and the output shaft of the servo motor 2 drives the screw 3 to rotate, so that the nut drives the connecting plate 5, the linear guide 4 slider, the floating plate 6, the special-shaped flat wire hairpin end face positioning plate 7, the special-shaped flat wire hairpin slot positioning plate 8, the cylinder 9, and the hairpin coil end gear positioning plate to move downward to the flat wire hairpin coil, so that the upper end face is close to the flat wire coil end face positioning surface 18, and the servo motor 2 stops, and the cylinder rod of the cylinder 9 extends, driving the turntable 11 to rotate, the gear 12 extends, and the hairpin support fillet 21 is close to the hairpin support surface. The servo motor 2 starts, and the output shaft of the servo motor 2 drives the screw of the screw assembly 3 to rotate, so that the nut drives the connecting plate 5, the linear guide 4 slider, the floating plate 6, the special-shaped flat wire hairpin end face positioning plate 7, the special-shaped flat wire hairpin slot positioning plate 8, the cylinder 9, the hairpin coil end gear positioning plate, and the flat wire hairpin coil continue to move downward to the required relative position between the flat wire hairpin coil and the stator core. Servo motor 2 stops, the cylinder rod of cylinder 9 retracts, servo motor 2 starts, and the motor rotates in the opposite direction to return to its original position.

[0018] The above implementation modes are not limitations of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by technicians in this technical field within the scope of the technical solution of the present invention also belong to the protection scope of the present invention.

Claims

1. An automatic pressing device for a flat wire hairpin coil and a stator core, characterized in that: A servo motor (2) and a linear guide rail (4) are installed on a frame body (1); the servo motor (2) is connected to a lead screw (3); a nut on the lead screw (3) is fixedly connected to a connecting plate (5); a slider is arranged on the linear guide rail (4) and is fixedly connected to the connecting plate (5); the connecting plate (5) is fixedly connected to a floating plate (6); a special-shaped flat wire hairpin end face positioning disc (7) and a cylinder (9) are arranged on the floating plate (6); a special-shaped flat wire hairpin slot positioning disc (8) and a hairpin coil end inserting tooth positioning disc are fixedly connected under the floating plate (6); the special-shaped flat wire hairpin slot positioning disc (8) is provided with an overall guiding chamfer (16) for the flat wire coil, a guiding chamfer (17) for leading out the hairpin wire, an end face positioning surface (18) of the flat wire coil, and a positioning groove (19) for leading out the hairpin wire; the hairpin coil end inserting tooth positioning disc comprises an inserting tooth upper positioning disc (10), a turntable (11), inserting teeth (12), and an inserting tooth lower guiding positioning disc (13); a cylinder rod of the cylinder (9) is connected to the turntable (11) of the hairpin coil end inserting tooth positioning disc, and a cam groove (24) is arranged on the turntable (11); the inserting teeth (12) are provided with a slot paper yielding protection groove (20) and a hairpin supporting fillet (21); a die plate (14) is fixedly connected to the frame body (1); a positioning key (15) is fixedly connected to the die plate (14); the positioning key (15) is provided with a positioning protrusion (22) and a chamfer (23).

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