End-twisting driving mechanism

Abstract

An end-twisting driving mechanism, comprising a frame (1), wherein a rotating cylinder (2) is provided on the frame (1), the rotating cylinder (2) is rotationally arranged, around the axis thereof, on the frame (1), a connecting portion (21) configured to connect a bending finger claw is provided at one end of the rotating cylinder (2), and a driving assembly (3) configured to drive the rotating cylinder (2) to rotate is further provided on the frame (1).

Description

Twist drive mechanism

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 22, 2024, with application number 202410086099.5, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of power equipment, for example, to a twisting head drive mechanism. Background Art

[0003] A flat wire motor is a special type of motor that uses flat wire (also known as rectangular wire) instead of round wire for its windings. This design gives the motor advantages in terms of performance, efficiency, and power density.

[0004] In related art, a flat wire motor includes a cylindrical stator. The stator comprises a stator core and a flat wire winding. The flat wire winding comprises multiple strands of U-shaped conductors, with two free ends of the U-shaped conductors inserted through two reserved through-holes in the stator core. After the flat wire windings are inserted into the stator, each free end is bent, and then the corresponding free ends of two adjacent U-shaped conductors are welded together, so that all the U-shaped conductors in the flat wire winding are connected in series.

[0005] To bend the free end of the U-shaped conductor, the stator is first fixed, and then the bending device bends the free end of the U-shaped conductor. The bending device includes a frame, on which a drive mechanism and bending fingers are mounted. The drive mechanism includes an electric slide, and the bending fingers are vertically fixed to the slider of the electric slide. In actual use, the bending fingers abut the free end of the U-shaped conductor, the electric slide moves, and the bending fingers move horizontally along with the slider of the electric slide. The bending fingers push the free end of the U-shaped conductor and bend it.

[0006] However, the above method of using an electric slide to push the bending fingers to bend the free ends of the U-shaped wires one by one is relatively inefficient and needs to be improved.

[0007] Summary of the Invention

[0008] In order to improve the problem in the related art that the electric slide of the bending device pushes the bending fingers to bend the free ends of the U-shaped wires one by one, which is relatively inefficient, the present application provides a twisting head drive mechanism.

[0009] The present application provides a twisting head drive mechanism, including a frame, on which a rotating drum is provided. The rotating drum is arranged on the frame and rotates around its axis. One end of the rotating drum is provided with a connecting portion configured to connect a bending claw. The frame is also provided with a driving component configured to drive the rotating drum to rotate.

[0010] In one or more embodiments, a plurality of rotating drums are arranged on the frame, the axes of all the rotating drums are collinear, all the rotating drums are sequentially sleeved from the inside to the outside, and the driving assembly is configured to drive each rotating drum to rotate.

[0011] In one or more embodiments, a transmission ring is provided on the frame, the axis of the transmission ring is colinear with the axis of the rotating drum, the side of the rotating drum facing away from the connecting portion is coaxially fixed with the transmission ring, and the transmission ring corresponds to the rotating drum one-to-one, and the drive assembly is also configured to drive each transmission ring to rotate.

[0012] In one or more embodiments, a gear ring is coaxially fixed on the transmission ring, and the driving assembly includes a driving motor and a driving gear, the driving gear is rotatably set on the frame, the driving gear is engaged with the gear ring, the driving motor is fixed on the frame, and the driving motor is connected to the driving gear and drives the driving gear to engage with the gear ring.

[0013] In one or more embodiments, the side walls of two adjacent transmission rings close to each other are respectively provided with an annular groove and an annular protrusion, the axes of both the annular groove and the annular protrusion are collinear with the axis of the transmission ring, and the annular protrusion is embedded in the annular groove and is rotatably connected to the annular groove.

[0014] In one or more embodiments, a sliding bearing is provided between the annular protrusion and the side wall of the annular groove.

[0015] In one or more embodiments, a plane bearing is provided between two adjacent transmission rings.

[0016] In one or more embodiments, a positioning shaft is provided on the frame, the axis of the positioning shaft is parallel to the axis of the transmission ring, the outer side of the transmission ring abuts against the positioning shaft, and a plurality of positioning shafts are spaced apart around the axis of the transmission ring.

[0017] In one or more embodiments, a centering bearing is rotatably provided on the positioning shaft, and the outer side of the transmission ring abuts against the outer side of the centering bearing.

[0018] In one or more embodiments, a limit plate is fixedly mounted on the frame, and the limit plate is arranged relative to the frame in the axial direction of the transmission ring. All transmission rings are located between the limit plate and the frame, and the transmission ring on the side away from the frame abuts against the limit plate.

[0019] In one or more embodiments, a central shaft is further provided on the frame, and the central shaft passes through the innermost rotating drum and is rotatably connected to the innermost rotating drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is an axonometric diagram showing the overall structure of the twist drive mechanism of this embodiment;

[0021] FIG2 is a vertical cross-sectional view of the structure of the twisting drive mechanism of this embodiment;

[0022] FIG3 is an enlarged view of a portion A in FIG2 , showing the structure of the transmission ring and the sliding bearing;

[0023] FIG4 is an enlarged view of a part B in FIG1 , showing the structure of the positioning shaft and the centering bearing.

[0024] Figure numerals: 1. Frame; 11. Support plate; 12. Center axis; 13. Placement plate; 131. Tightening bolt; 2. Rotating drum; 21. Connecting part; 3. Driving assembly; 31. Driving motor; 32. Driving gear; 321. Transmission shaft; 4. Transmission ring; 41. Plane bearing; 42. Gear ring; 5. Limiting plate; 51. Avoidance hole; 52. Limiting ring; 6. Annular slide; 61. Sliding bearing; 7. Annular protrusion; 8. Positioning shaft; 81. Sliding seat; 811. Waist-shaped hole; 812. Fastening bolt; 83. Centering bearing. DETAILED DESCRIPTION

[0025] The present application is described below with reference to the accompanying drawings.

[0026] An embodiment of the present application provides a head-turning drive mechanism.

[0027] The twisting head drive mechanism includes a frame 1, on which a rotating drum 2 is provided. The rotating drum 2 is arranged on the frame 1 and rotates around its axis. One end of the rotating drum 2 is provided with a connecting portion 21 for connecting a bending finger claw. The frame 1 is also provided with a driving component 3 for driving the rotating drum 2 to rotate.

[0028] 1 and 2 , the twisting head drive mechanism includes a frame 1, on which a rotating drum 2 is mounted. The axis of the rotating drum 2 is vertical, and the rotating drum 2 is mounted on the frame 1 so as to rotate around the axis. A plurality of rotating drums 2 are mounted on the frame 1, and the axes of all the rotating drums 2 are collinear. The rotating drums 2 are sequentially arranged from the inside out. A connecting portion 21 is provided on the upper side of each rotating drum 2. Furthermore, a driving assembly 3 is provided on the frame 1 to drive each rotating drum 2 to rotate.

[0029] By adopting the above technical solution, in actual use, multiple bending fingers can be fixed to the connecting portion 21 of the rotating drum 2, and the stator and the rotating drum 2 are coaxial, so that each bending finger corresponds to the free end of a U-shaped wire. The driving assembly 3 drives the rotating drum 2 to rotate, and all the bending fingers simultaneously bend the free ends of the corresponding U-shaped wires. This method helps to achieve synchronous bending of the free ends of multiple U-shaped wires, helping to improve the efficiency of bending the free ends of U-shaped wires.

[0030] By adopting the above technical solution, in actual use, bending claws can be set at the connection part 21 of each inner and outer rotating drum 2 to bend the free ends of a large number of U-shaped wires at the same time, thereby improving the work efficiency of bending the free ends of the U-shaped wires.

[0031] During installation, the bending fingers can be vertically fixed to the connection portion 21 of the drum 2. The bending fingers can be locked to the connection portion 21 of the drum 2 using fasteners or directly welded to the connection portion 21 of the drum 2. There are other ways to secure the bending fingers, which will not be described here. When bending the free ends of the U-shaped conductors, the stator and the drum 2 are coaxial, so that each bending finger corresponds to the free end of a U-shaped conductor. The drive assembly 3 drives each drum 2 to rotate, and all the bending fingers simultaneously bend the free ends of the corresponding U-shaped conductors.

[0032] In one or more embodiments, a transmission ring 4 is provided on the frame 1, the axis of the transmission ring 4 is colinear with the axis of the rotating drum 2, the side of the rotating drum 2 facing away from the connecting portion 21 is coaxially fixed with the transmission ring 4, and the transmission ring 4 corresponds one-to-one to the rotating drum 2, and the driving assembly 3 is also configured to drive each transmission ring 4 to rotate.

[0033] By adopting the above technical solution, a transmission ring 4 is provided which is coaxially fixed with the rotating drum 2, and the driving assembly 3 drives each transmission ring 4 to rotate, thereby driving each rotating drum 2 to rotate. This helps to facilitate the installation and driving of all the rotating drums 2, and helps to reduce the interference between the driving operations of each rotating drum 2.

[0034] In one or more embodiments, a limit plate 5 is fixedly mounted on the frame 1, and the limit plate 5 is arranged relative to the frame 1 in the axial direction of the transmission ring 4. All the transmission rings 4 are located between the limit plate 5 and the frame 1, and the transmission ring 4 on the side facing away from the frame 1 abuts against the limit plate 5.

[0035] By adopting the above technical solution, the limiting plate 5 abuts against the transmission ring 4 on the side away from the frame 1, which helps to ensure the rotation stability of each transmission ring 4.

[0036] Referring to Figures 2 and 3, illustratively, a support plate 11 is fixed to the upper side of the frame 1. The support plate 11 is horizontal. A transmission ring 4 is provided on the upper side of the support plate 11. The axis of the transmission ring 4 is collinear with the axis of the rotating drum 2. Multiple transmission rings 4 are provided in the vertical direction. The transmission rings 4 correspond one-to-one to the rotating drum 2, and the lower end of each rotating drum 2 is fixedly connected to the corresponding transmission ring 4. In this embodiment, the lower side of each rotating drum 2 is fixed to the corresponding transmission ring 4 by bolts. A limit plate 5 is also fixed to the upper side of the frame 1. The limit plate 5 is horizontal. All transmission rings 4 are located between the limit plate 5 and the support plate 11. A avoidance hole 51 is provided in the middle of the limit plate 5 to avoid the rotating drum 2. The axis of the avoidance hole 51 is collinear with the axis of the rotating drum 2, and the diameter of the avoidance hole 51 is not less than the outer diameter of the outermost rotating drum 2. A limiting ring 52 is fixed to the lower side of the limiting plate 5 . The axis of the limiting ring 52 is collinear with the axis of the drum 2 , and the inner diameter of the limiting ring 52 is not less than the outer diameter of the outermost drum 2 .

[0037] In one or more embodiments, the side walls of two adjacent transmission rings 4 close to each other are respectively provided with an annular groove 6 and an annular protrusion 7, the axes of the annular groove 6 and the annular protrusion 7 are both collinear with the axis of the transmission ring 4, and the annular protrusion 7 is embedded in the annular groove 6 and is rotatably connected to the annular groove 6.

[0038] By adopting the above technical solution, the annular groove 6 and the annular protrusion 7 cooperate to connect two adjacent transmission rings 4, which helps to improve the stability of each drum 2 in rotating on the frame 1.

[0039] An annular groove 6 is provided on the upper side of the support plate 11 and all transmission rings 4. The axis of each annular groove 6 is collinear with the axis of the transmission ring 4. The lower sides of the limiting ring 52 and all transmission rings 4 are protruding downward and formed with an annular protrusion 7. The axis of each annular protrusion 7 is collinear with the axis of the transmission ring 4. Each annular protrusion 7 is downwardly embedded in the corresponding annular groove 6 and is rotatably connected to the corresponding annular groove 6. A sliding bearing 61 is provided between each annular protrusion 7 and the side wall of the corresponding annular groove 6. The axis of each sliding bearing 61 is collinear with the axis of the transmission ring 4. In addition, a plane bearing 41 is provided between the support plate 11 and adjacent transmission rings 4, between two adjacent transmission rings 4, and between the limiting ring 52 and adjacent transmission rings 4. The axis of each plane bearing 41 is collinear with the axis of the transmission ring 4. The plane bearing 41 is provided between two adjacent transmission rings 4 to improve the smoothness of relative rotation between the two adjacent transmission rings 4.

[0040] By adopting the above technical solution, a sliding bearing 61 is provided between the annular protrusion 7 and the side wall of the annular groove 6 , which helps to improve the smoothness of the relative rotation between two adjacent transmission rings 4 .

[0041] In one or more embodiments, a gear ring 42 is coaxially fixed to the transmission ring 4. The drive assembly 3 includes a drive motor 31 and a driving gear 32. The driving gear 32 is rotatably mounted on the frame 1. The driving gear 32 meshes with the gear ring 42. The drive motor 31 is fixed to the frame 1 and is in transmission connection with the driving gear 32, driving the driving gear 32 to mesh with the gear ring 42. The drive motor 31 is in transmission connection with the driving gear 32, driving the driving gear 32 to mesh with the gear ring 42. By adopting the above technical solution, the drive motor 31 drives the driving gear 32 to rotate, thereby driving the gear ring 42, the transmission ring 4, and the rotating drum 2 to drive the rotating drum 2.

[0042] Referring to Figures 1 and 2, a gear ring 42 is coaxially arranged around the outer side of the transmission ring 4, with the teeth of the gear ring 42 facing outward. The inner side of the gear ring 42 is fixed to the transmission ring 4 by bolts, and the gear ring 42 corresponds one-to-one with the transmission ring 4. The driving assembly 3 includes a driving motor 31 and a driving gear 32. The frame 1 is located on the outer side of the gear ring 42 and is rotatably provided with a transmission shaft 321. The transmission shaft 321 is vertical, and the driving gear 32 is coaxially fixed with the transmission shaft 321, and the driving gear 32 is engaged with the gear ring 42. The driving motor 31 is fixed to the lower side of the frame 1, and the output shaft of the driving motor 31 is fixed to the lower end of the transmission shaft 321. In addition, both the driving motor 31 and the driving gear 32 correspond one-to-one with the gear ring 42.

[0043] Referring to Figure 2 , to enhance the stability of the rotating drum 2 and the transmission ring 4, a central shaft 12 is provided in the middle of the frame 1. The central shaft 12 coaxially passes through the innermost rotating drum 2 and is rotatably connected to the innermost rotating drum 2. In this embodiment, the central shaft 12 can be rotatably connected to the frame 1 or fixed thereto.

[0044] By adopting the above technical solution, the central shaft 12 is rotatably connected to the innermost drum 2, thereby improving the rotation stability of the drum 2.

[0045] In one or more embodiments, a positioning shaft 8 is provided on the frame 1. The axis of the positioning shaft 8 is parallel to the axis of the transmission ring 4. The outer side of the transmission ring 4 abuts the positioning shaft 8. Multiple positioning shafts 8 are provided at intervals around the axis of the transmission ring 4. By adopting the above technical solution, multiple positioning shafts 8 abut the outer side of the transmission ring 4, which helps to improve the rotational stability of the transmission ring 4 and the drum 2.

[0046] A centering bearing 83 is rotatably provided on the positioning shaft 8 , and the outer side of the transmission ring 4 abuts against the outer side of the centering bearing 83 .

[0047] By adopting the above technical solution, the resistance of the positioning shaft 8 to the rotation of the transmission ring 4 is reduced, and the smoothness of the rotation of the transmission ring 4 and the rotating drum 2 is improved.

[0048] Referring to Figures 1 and 4 , the frame 1 is also provided with a positioning shaft 8. The positioning shaft 8 is vertical, and the upper end of the positioning shaft 8 passes through the limit plate 5. The hole on the limit plate 5 through which the positioning shaft 8 passes is larger than the positioning shaft 8 and allows the positioning shaft 8 to move. A slide 81 is fixed to each end of the positioning shaft 8. Both slides 81 are provided with a waist-shaped hole 811. The length direction of the waist-shaped hole 811 extends from the side of the slide 81 away from the transmission ring 4 to the side close to the transmission ring 4. Each slide 81 is provided with a fastening bolt 812. The fastening bolt 812 passes through the waist-shaped hole 811, and the fastening bolt 812 corresponds to the waist-shaped hole 811 one-to-one. The fastening bolt 812 on the lower side locks the lower slide 81 to the frame 1, and the fastening bolt 812 on the upper side locks the upper slide 81 to the limit plate 5. In this embodiment, each slide 81 is provided with a plurality of waist-shaped holes 811, and fastening bolts 812 are provided corresponding to the waist-shaped holes 811. A centering bearing 83 is sleeved on the positioning shaft 8, and the centering bearing 83 abuts against the outer wall of the transmission ring 4, and the centering bearing 83 is provided corresponding to the transmission ring 4.

[0049] A placement plate 13 is provided on the side of the two slides 81 facing away from the transmission ring 4. The two placement plates 13 are respectively fixed on the frame 1 and the limit plate 5. The two placement plates 13 are each provided with a tightening bolt 131 from the side facing away from the slide 81 to the side of the slide 81. The two tightening bolts 131 are both threadedly connected to the corresponding placement plate 13, and the two tightening bolts 131 tighten the corresponding slide 81 respectively.

[0050] Four positioning shafts 8 are evenly spaced around the axis of the transmission ring 4 on the frame 1. The slide 81, fastening bolts 812, centering bearings 83, mounting plate 13, and jacking bolts 131 are all positioned corresponding to the positioning shafts 8. During installation, each jacking bolt 131 is loosened; tightening each jacking bolt 131 pushes the slide 81 and positioning shaft 8 toward the transmission ring 4, forcing each centering bearing 83 to press against the corresponding transmission ring 4; tightening each jacking bolt 131 secures each slide 81.

[0051] The embodiment of the present application provides a twisting drive mechanism according to the following principles: In actual use, a bending finger can be vertically fixed to the connection portion 21 of the rotating drum 2. When bending the free end of a U-shaped wire, the stator and the rotating drum 2 are aligned coaxially, so that each bending finger corresponds to the free end of a U-shaped wire. Each drive motor 31 drives the transmission shaft 321 to rotate, and the driving gear 32 and the gear ring 42 cooperate to drive the transmission ring 4 and the rotating drum 2, thereby bending the free end of the corresponding U-shaped wire through the bending finger.

Claims

1. A twisting drive mechanism, comprising a frame (1), wherein, A rotating drum (2) is provided on the frame (1), and the rotating drum (2) is rotatably provided on the frame (1) around the axis of the rotating drum (2). One end of the rotating drum (2) is provided with a connecting portion (21) configured to connect with a bending finger claw. The frame (1) is also provided with a driving assembly (3) configured to drive the rotating drum (2) to rotate.

2. A head-turning drive mechanism according to claim 1, wherein: A plurality of rotating drums (2) are arranged on the frame (1), the axes of all the rotating drums (2) are collinear, all the rotating drums (2) are arranged in sequence from the inside to the outside, and the driving assembly (3) is configured to drive each rotating drum (2) to rotate.

3. The torsion drive mechanism according to claim 2, wherein, A transmission ring (4) is provided on the frame (1), the axis of the transmission ring (4) is colinear with the axis of the rotating drum (2), the side of the rotating drum (2) facing away from the connecting portion (21) is coaxially fixed with the transmission ring (4), and the transmission ring (4) corresponds to the rotating drum (2) one by one, and the driving assembly (3) is further configured to drive each transmission ring (4) to rotate.

4. A neck-turning drive mechanism according to claim 3, wherein, A gear ring (42) is coaxially fixed on the transmission ring (4); the driving assembly (3) comprises a driving motor (31) and a driving gear (32); the driving gear (32) is rotatably arranged on the frame (1); the driving gear (32) is meshed with the gear ring (42); the driving motor (31) is fixed on the frame (1); the driving motor (31) is transmission-connected to the driving gear (32) and drives the driving gear (32) to mesh with the gear ring (42).

5. The twisting drive mechanism according to claim 3, wherein, An annular groove (6) and an annular protrusion (7) are respectively provided on the side walls of two adjacent transmission rings (4) close to each other. The axes of the annular groove (6) and the annular protrusion (7) are both collinear with the axis of the transmission ring (4). The annular protrusion (7) is embedded in the annular groove (6) and is rotatably connected to the annular groove (6).

6. A neck-turning drive mechanism according to claim 5, wherein, A sliding bearing (61) is provided between the annular protrusion (7) and the side wall of the annular sliding groove (6).

7. A neck-turning drive mechanism according to claim 3, wherein, A positioning shaft (8) is provided on the frame (1), the axis of the positioning shaft (8) is parallel to the axis of the transmission ring (4), the outer side of the transmission ring (4) abuts against the positioning shaft (8), and a plurality of positioning shafts (8) are provided at intervals around the axis of the transmission ring (4).

8. A neck-turning drive mechanism according to claim 7, wherein, A centering bearing (83) is rotatably provided on the positioning shaft (8), and the outer side of the transmission ring (4) abuts against the outer side of the centering bearing (83).

9. A twisting drive mechanism according to claim 3, wherein, A limit plate (5) is also fixedly mounted on the frame (1), and the limit plate (5) is arranged relative to the frame (1) in the axial direction of the transmission ring (4). All the transmission rings (4) are located between the limit plate (5) and the frame (1), and the transmission ring (4) on the side facing away from the frame (1) abuts against the limit plate (5).

10. A head-turning drive mechanism according to claim 2, wherein, The frame (1) is further provided with a central shaft (12), which passes through the innermost rotating drum (2) and is rotatably connected to the innermost rotating drum (2).

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