A wire end processing device for a motor stator winding machine

Abstract

The present invention relates to a wire end processing device for a motor stator winding machine, which is installed on the machine table of the winding machine and includes a wire twisting mechanism, a wire cutting mechanism, a wire clamping mechanism and a wire pulling mechanism. The wire clamping mechanism and the wire pulling mechanism are both installed on the base through a cross slide assembly. The cross slide assembly is controlled by a servo motor to move along the X-axis and Y-axis directions in a plane. The base is parallel to the tabletop of the winding machine. The wire twisting mechanism and the wire cutting mechanism are both located above the wire clamping mechanism and the wire pulling mechanism, and the wire twisting mechanism and the wire cutting mechanism can move up and down respectively. A wire clamping notch is provided at the lower part of the wire twisting mechanism. The wire clamping mechanism includes two wire clamping devices arranged side by side. The wire pulling mechanism includes a wire pulling cylinder, and the wire pulling cylinder can drive one of the wire clamping devices to translate in a direction away from or close to the other wire clamping device. The present invention is a multifunctional integrated device, which can be directly installed on the machine table of the winding machine, and the winding machine is used to position the stator assembly, eliminating the need for manual feeding.

Description

Technical Field

[0001] The present invention relates to motor manufacturing equipment, and particularly to a wire head processing device for a motor stator winding machine. Background Art

[0002] A motor is composed of a stator assembly and a rotor assembly. During the manufacturing process of the stator assembly, the winding of the stator core wire package is a key process in manufacturing the motor. The commonly used winding equipment is an automatic winding machine. After winding the wire package using the winding machine, the wire heads after cutting multiple strands of enameled wire need to be tightened. There is no automatic wire head processing function on the existing winding machines, mainly relying on manual labor to tighten the wire heads, which is time-consuming and laborious, seriously affecting the production efficiency of the motor.

[0003] To solve the above problems, some designers have specifically developed wire head processing devices, using automated equipment to replace manual processing. However, many existing wire head processing devices cannot be directly coordinated with the winding machine. Instead, the stator assembly after winding the wire package needs to be transferred from the winding machine to this wire head processing device, and then operations such as tightening and cutting the wire heads are carried out. Such a design idea still has the following deficiencies: Firstly, manual feeding is required to position the stator assembly, seriously wasting working hours; secondly, it is difficult to guarantee the positioning accuracy of the stator assembly, which will affect the tightening degree of the wire heads. In the existing designs, taking the invention patent with the publication number CN207753580U as an example, it discloses a wire head processing device for a motor stator. There are multiple devices with different functions for processing the wire heads arranged around a turntable, including a wire twisting device, a wire cutting device, a trimming device, a wire aligning device, and a clamping device in sequence. These devices are arranged at different workstations and need to use the turntable to sequentially send the stator assembly to different stator fixing seats. This design requires multi-station coordination, with a large debugging difficulty and it is difficult to guarantee the positioning accuracy of the stator assembly. After wire cutting, it is often necessary to additionally attach a special device for trimming the wire heads (such as the trimming device in this patent) to ensure the consistency of the outgoing ends of the stator assembly, resulting in waste of enameled wire. Summary of the Invention

[0004] The present invention discloses a wire head processing device for a motor stator winding machine. This device is a multi-functional integrated device, integrating functions of wire pulling, wire clamping, wire twisting, and wire cutting at one workstation. It can be directly installed on the machine table of the winding machine, and the winding machine is used to position the stator assembly, eliminating the need for manual feeding.

[0005] To achieve the above objective, the technical solution adopted by the present invention is as follows:

[0006] A wire end processing device for a motor stator winding machine, which is installed on the machine table of the winding machine, includes a wire twisting mechanism, a wire cutting mechanism, a wire clamping mechanism and a wire pulling mechanism. The wire clamping mechanism and the wire pulling mechanism are both installed on a base through a cross slide table assembly. The cross slide table assembly is controlled by a servo motor to move along the X-axis and Y-axis directions in a plane. The base is parallel to the table surface of the winding machine. The wire twisting mechanism and the wire cutting mechanism are both located above the wire clamping mechanism and the wire pulling mechanism, and the wire twisting mechanism and the wire cutting mechanism can move up and down respectively. A wire clamping notch is provided at the lower part of the wire twisting mechanism. The wire clamping mechanism includes two wire clamping devices arranged side by side. The wire pulling mechanism includes a wire pulling cylinder, and the wire pulling cylinder can drive one of the wire clamping devices to translate away from or close to the other wire clamping device.

[0007] Further, the cross slide table assembly includes a bottom plate installed on the base. A first guide rail is provided on the bottom plate. A first slider is provided at the bottom of a first mounting plate parallel to the bottom plate. The first slider slides along the first guide rail. A first servo motor is provided on the bottom plate. The first servo motor drives a first lead screw. The bottom of the first mounting plate is assembled on the first lead screw through a first nut. A third mounting plate is provided above the first mounting plate. When the first mounting plate slides along the first guide rail, it drives the third mounting plate to move synchronously. A second guide rail is provided on the third mounting plate. The length direction of the second guide rail is perpendicular to the length direction of the first guide rail. A second slider is provided on the second guide rail. The top of the second slider is fixedly connected to a second nut. A second servo motor drives a second lead screw. The second nut is assembled on the second lead screw. The wire clamping mechanism and the wire pulling mechanism are installed on the second nut through a connecting small plate.

[0008] Further, a second mounting plate is further provided between the first mounting plate and the third mounting plate. The second mounting plate is fixed to the top of the first mounting plate. A first cylinder is provided on the second mounting plate. The first cylinder is used to push the third mounting plate to move up and down.

[0009] Further, each wire clamping device includes a wire clamping cylinder and a chute seat. One end of the chute seat is provided with a sliding rod that can slide along the chute seat. A cylinder connecting block pushed by the wire clamping cylinder is fixedly connected to the sliding rod. A push head is provided at one end of the sliding rod. A hook angle head is provided at the other end of the chute seat. The wire harness to be clamped passes through between the push heads and the hook angle heads of the two wire clamping devices. The wire clamping cylinder drives the sliding rod to drive the push head to move towards the hook angle head to clamp the wire harness.

[0010] Further, the push head includes a horizontal end parallel to the top surface of the chute seat and a vertical end perpendicular to the top surface of the chute seat. The vertical end of the push head is opposite to the vertical end of the hook angle head. When the push head and the hook angle head cooperate to clamp the wire harness, the top of the hook angle head is located below the horizontal end of the push head.

[0011] Further, a groove is provided at one end of the top of the chute seat near the hook angle head. A wire pushing rod is provided on the chute seat. The wire pushing rod includes a first connecting rod located at the bottom of the chute seat, second connecting rods perpendicularly connected to both ends of the first connecting rod respectively, a third connecting rod fixedly connected to one end of the second connecting rod, and a fourth connecting rod connected between the two third connecting rods and capable of being embedded in the groove. The connecting end of the second connecting rod and the third connecting rod is hinged to the side wall of the chute seat. A second air cylinder is provided at the bottom of the chute seat, and a top head is provided at the pushing end of the second air cylinder. The second air cylinder pushes the top head to apply a thrust to the first connecting rod of the wire pushing rod, so that the fourth connecting rod of the wire pushing rod disengages from the groove.

[0012] Further, a return spring is provided at the bottom of the chute seat. One end of the return spring is installed on the side wall of the chute seat, and the other end of the return spring is installed on the wire pushing rod.

[0013] Further, the wire pulling mechanism further includes a third guide rail. The wire clamping cylinder of one of the wire clamping devices is fixed on the slider connecting plate. The bottom of the slider connecting plate is fixedly connected to the third slider. The third slider slides along the third guide rail. The output end of the wire pulling cylinder is fixedly connected to the cylinder connecting plate. The cylinder connecting plate is fixedly connected to the slider connecting plate. The sliding direction of the third slider is perpendicular to the pushing direction of the wire clamping cylinder.

[0014] Further, the wire cutting mechanism includes a pneumatic wire cutting pliers, a scissors lifting air cylinder, and a vertically arranged fourth guide rail. The scissors lifting air cylinder drives the pneumatic wire cutting pliers to move up and down. The pneumatic wire cutting pliers are installed on the scissors mounting plate. The scissors mounting plate is fixedly connected to the fourth slider. The fourth slider slides up and down along the fourth guide rail.

[0015] Further, the wire twisting mechanism includes a third servo motor, a speed reducer driven by the third servo motor, and a telescopic air cylinder moving up and down. The cylinder push plate of the telescopic air cylinder drives the speed reducer fixing plate to move up and down. The speed reducer is installed on the speed reducer fixing plate. A wire twisting wheel fixing plate is installed on the speed reducer fixing plate. A wire twisting driving wheel driven by the speed reducer is installed on the upper part of the wire twisting wheel fixing plate. A wire twisting driven wheel meshing with the wire twisting driving wheel is installed on the lower part of the wire twisting wheel fixing plate. A through wire clamping part is arranged inside the wire twisting driven wheel. A notch is arranged at the bottom of the wire twisting driven wheel, and the notch communicates with the wire clamping part.

[0016] The wire end processing device disclosed by the present invention has a relatively simple mechanical structure, relatively small mechanical wear caused by movement, and avoids the deficiency of large mechanical cumulative errors brought by complex mechanisms. This wire end processing device can be directly installed on a winding machine, and can realize the twisting and tightening operations for wire bodies with different enameled wire diameters, with a wide application range and a small installation footprint. The entire device adopts a single-station multi-functional integrated design, integrating the functions of wire pulling, wire clamping, wire twisting, and wire cutting on one station. The wire pulling and wire clamping mechanisms are installed on the cross slide of the winding machine and are controlled by servo motors in the X-axis and Y-axis directions, which can meet the different processing requirements for the wire ends of the motor stator lead wires, center lines, and cross-over wires, and can achieve the most economical wire end processing, with strong consistency at the outgoing line end of the stator, avoiding the waste of enameled wire. The wire twisting mechanism adopts servo control, and the starting point of tightening can be accurately positioned, and the tightening degree and tightening force of each wire end can be accurately guaranteed. This wire end processing device can directly cooperate with the winding machine equipment to automatically position the wire end, without the need for a dedicated wire end positioning mechanism, which can reduce the man-hour loss of manual feeding and positioning, and can save cost expenditure. Brief Description of the Drawings

[0017] Figure 1 It is the overall assembly structure diagram of the wire end processing device in the embodiment;

[0018] Figure 2 is Figure 1 the schematic diagram of the wire pulling and wire clamping mechanisms installed on the cross slide in ;

[0019] Figure 3 It is the schematic diagram of the wire pulling and wire clamping mechanisms from the first perspective;

[0020] Figure 4 It is the schematic diagram of the wire pulling and wire clamping mechanisms from the second perspective;

[0021] Figure 5 It is the schematic diagram of the wire pulling and wire clamping mechanisms from the third perspective;

[0022] Figure 6 It is the schematic diagram of the wire twisting and wire cutting mechanisms from the first perspective;

[0023] Figure 7 It is the partial structure schematic diagram of the wire twisting and wire cutting mechanisms from the second perspective;

[0024] Figure 8 It is the partial structure schematic diagram of the wire twisting and wire cutting mechanisms from the third perspective;

[0025] Figure 9 It is the partial structure schematic diagram of the wire twisting mechanism.

[0026] Description of the Reference Numerals in the Drawings:

[0027] 1. Base; 2. Control cabinet; 3. Installation side plate; 4. Installation bottom plate; 5. First guide rail; 6. First slider; 7. First mounting plate; 8. Second mounting plate; 9. First servo motor; 10. First cylinder; 11. Third mounting plate; 12. Second guide rail; 13. Second servo motor; 14. First lead screw; 15. Second lead screw; 16. Second slider; 17. Connecting small plate; 18. Linear guide fixing plate; 19. Pulling wire cylinder; 20. First wire clamping cylinder; 21. Second wire clamping cylinder; 22. Cylinder connecting plate; 23. Cylinder fixing seat; 24. Cylinder connecting block; 25. Second cylinder; 26. Lining block; 27. Pushing head; 28. Wire dialing rod; 281. First connecting rod; 282. Second connecting rod; 283. Third connecting rod; 284. Fourth connecting rod; 29. Hook angle head; 30. Chute seat; 31. Cylinder support; 32. Third guide rail; 33. Guide rail stop block; 34. Third slider; 35. Slider connecting plate; 36. Slide bar; 37. Head; 38. Groove; 39. First fixing block; 40. Support rod; 41. Second fixing block; 42. Adjusting block; 43. First guide rod; 44. Conversion block; 45. Second guide rod; 46. Scissor mounting seat; 47. Lifting guide fixing plate; 48. Fourth slider; 49. Fourth guide rail; 50. Scissor mounting plate; 51. Guide rail stop block; 52. Pneumatic pliers; 53. Scissor lifting cylinder; 54. Twisting wheel fixing plate; 55. Pliers cylinder frame; 56. Telescopic cylinder; 57. Cylinder push plate; 58. Cylinder adapter plate; 59. Scissor cylinder connecting plate; 60. Third servo motor; 61. Input flange; 62. Reducer; 63. Ring gear; 64. Reducer fixing plate; 65. First twisting wheel fixing plate; 66. Second twisting wheel fixing plate; 67. Side plate; 68. Twisting wheel wire guide plate; 69. Twisting drive wheel; 70. Twisting driven wheel; 71. Notch; 72. Sensor; 73. Sensor support. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] This embodiment discloses a wire end processing device for a motor stator winding machine, which can be directly installed on the machine table of the winding machine. As Figures 1 to 9 shown, the wire end processing device includes a wire twisting mechanism, a wire cutting mechanism, a wire clamping mechanism, and a wire pulling mechanism. The wire twisting mechanism is used to tighten the multi-strand enameled wires at the wire end of the wire harness. The wire cutting mechanism is used to cut the tightened wire end. The wire clamping mechanism is used to hook the wire harness after winding and clamp the wire harness. The wire pulling mechanism cooperates with the wire clamping mechanism to pull the wire harness flat after clamping. According to the functional design of each mechanism, the wire clamping mechanism and the wire pulling mechanism cooperate with each other to complete the operations of wire clamping and wire pulling. Therefore, the wire pulling mechanism and the wire clamping mechanism are designed together, as Figure 1As shown, both the wire clamping mechanism and the wire pulling mechanism are installed on the base 1 through the cross slide assembly. The base 1 is parallel to the tabletop of the winding machine. The cross slide is used to drive the wire clamping mechanism and the wire pulling mechanism to stay in the standby position or move to the flying fork position of the winding machine for wire hooking. The wire cutting mechanism needs to cooperate with the wire twisting mechanism to complete wire twisting and then cut the wire head. Therefore, the wire cutting mechanism and the wire twisting mechanism are designed together, and the two are designed side by side. The wire twisting mechanism and the wire cutting mechanism are each controlled by a lifting mechanism to move up and down. As Figure 1 shown, both the wire twisting mechanism and the wire cutting mechanism are located above the wire clamping mechanism and the wire pulling mechanism.

[0030] In the above solution, to achieve a compact and reasonable layout design of the mechanical structure, as Figure 1 shown, an open mask with side plates 3 is provided on the top surface of the base 1, and the wire head processing device is installed in the mask. The side plates 3 are vertically fixed to the base 1. An electrical control cabinet 2 is provided behind the mask, and the electrical control cabinet 2 is used to control the operation of each mechanism of the wire head processing device.

[0031] As Figure 2 shown, the structure of the cross slide assembly is as follows: a bottom plate 4 is provided at the bottom of the mask, and the bottom plate 4 is fixed to the top of the base 1. Two parallel first guide rails 5 are provided on the bottom plate 4. A first mounting plate 7 is provided above the first guide rails 5. The first mounting plate 7 is parallel to the bottom plate 4. The bottom of the first mounting plate 7 is fixedly connected to a first slider 6, and the first slider 6 slides along the first guide rail 5. A first lead screw 14 and a first servo motor 9 are provided on the bottom plate between the two first guide rails 5. The bottom of the first mounting plate 7 is fixedly connected to a first nut, and the first nut is installed on the first lead screw 14. The first lead screw 14 is driven by the first servo motor 9 to move, and the first mounting plate 7 is translated in the X-axis direction along the first guide rail 5 under the drive of the first nut.

[0032] Further, a second mounting plate 8 is fixedly connected to the top of the first mounting plate 7. First cylinders 10 that move in the vertical direction are provided at both ends of the second mounting plate 8. A third mounting plate 11 is provided above the second mounting plate 8, and the bottom of the third mounting plate 11 is fixedly connected to the pushing end of the first cylinder 10. The third mounting plate 11 is a U-shaped long plate, that is, it is divided into a horizontal plate and a vertical plate. A second guide rail 12 is installed on the top surface of the horizontal plate. The length direction of the second guide rail 12 is perpendicular to the length direction of the first guide rail 5. A second slider 16 is provided on the second guide rail 12. The top of the second slider 16 is fixedly connected to a second nut. A second lead screw 15 is provided between the vertical plates of the third mounting plate 11. The second nut is assembled on the second lead screw 15. The second lead screw 15 is driven by a second servo motor 13. Under the drive of the second servo motor 13, the second slider 16 is translated in the Y-axis direction along the second guide rail 12. The wire clamping mechanism and the wire pulling mechanism are installed on the top of the second nut through an L-shaped connecting small plate 17.

[0033] Further description of the wire clamping mechanism and the wire pulling mechanism is as follows. As Figures 3 to 5 shown, the wire clamping mechanism includes two wire clamping devices arranged side by side. Each wire clamping device includes a wire clamping cylinder and a chute seat 30. To facilitate the distinction between the two wire clamping cylinders, the stationary wire clamping cylinder is called the first wire clamping cylinder 20, and the other wire clamping cylinder that can translate relative to the first wire clamping cylinder 20 is called the second wire clamping cylinder 21. The two wire clamping devices have the same structural design. Taking a single wire clamping device as an example, its structural composition is introduced. A linear guide fixing plate 18 is fixedly connected to the top of the L-shaped connecting small plate 17. A lining block 26 is fixedly connected to the top of one end of the linear guide fixing plate 18. The first wire clamping cylinder 20 is fixedly installed on the lining block 26 through a cylinder fixing seat 23. A third guide rail 32 is installed on the linear guide fixing plate 18 beside the lining block 26. A third slider 34 is arranged on the third guide rail 32. A guide rail stopper 33 is arranged at the outer end of the third guide rail 32. The length direction of the third guide rail 32 is perpendicular to the pushing direction of the wire clamping cylinder. The second wire clamping cylinder 21 is fixedly installed on the slider connecting plate 35 through another cylinder fixing seat 23. The bottom of the slider connecting plate 35 is fixedly connected to the top of the third slider 34. The slider connecting plate 35 is fixedly connected to an L-shaped cylinder connecting plate 22. A cylinder bracket 31 is installed on the bottom of the linear guide fixing plate 18 near one side of the guide rail stopper 33. The wire pulling cylinder 19 is fixedly installed on the cylinder bracket 31. The pushing end of the wire pulling cylinder 19 is fixedly connected to the cylinder connecting plate 22. The wire pulling cylinder 19 and the third guide rail 32, etc. constitute the wire pulling mechanism in the wire end processing device. Under the push of the wire pulling cylinder 19, the second wire clamping cylinder 21 translates along the third guide rail 32 in a direction away from the first wire clamping cylinder 20. When both ends of the wire harness are clamped by the two wire clamping devices respectively, as the second wire clamping cylinder 21 is driven away by the wire pulling cylinder 19, the wire harness can be pulled and flattened.

[0034] In addition to the wire clamping cylinder, each wire clamping device also includes a chute seat 30. A chute is arranged at one end of the chute seat 30. A sliding rod 36 that can slide along the chute is arranged in the chute. The pushing end of the wire clamping cylinder is connected to a cylinder connecting block 24. The cylinder connecting block 24 is fixedly connected to the sliding rod 36. A push head 27 is arranged at one end of the sliding rod 36. A hook angle head 29 is arranged at the other end of the chute seat 30 away from the chute. The hook angle head 29 is used for hooking the wire and cooperating with the push head 27 to clamp the wire harness together.

[0035] Further explanation of the wire clamping device: in order to prevent the wire harness from escaping from the upper gap between the hook angle head 29 and the push head 27 when clamping the wire, the push head 27 in this embodiment is an L-shaped structure, that is, it includes a horizontal end parallel to the top surface of the slide seat 30 and a vertical end perpendicular to the top surface of the slide seat 30. The vertical end of the push head 27 is opposite to the vertical end of the hook angle head 29, and the vertical end of the push head 27 is fixedly connected to the slide rod 36. The horizontal end of the push head 27 faces the side of the hook angle head 29. When the wire clamping cylinder pushes the push head 27 to move toward the hook angle head 29, the wire harness passed through the wire clamping device is clamped by the vertical end of the push head 27 and the vertical end of the hook angle head 29. At this time, the top of the hook angle head 29 is located below the horizontal end of the push head 27, and the horizontal end of the push head 27 prevents the wire harness from escaping from the top.

[0036] Further optimization, in order to prevent the harness from being stuck to the clamping device, the clamping device of this embodiment is also provided with a de-wire mechanism, which includes a wire-pulling rod 28, a second cylinder 25 and a return spring. Figure 5 As shown, a groove 38 is provided at one end of the top of the chute seat 30 near the hook head 29, and a wire-moving rod 28 is provided on the chute seat 30. The wire-moving rod 28 includes a first connecting rod 281 located at the bottom of the chute seat 30, a second connecting rod 282 perpendicularly connected to both ends of the first connecting rod 281, a third connecting rod 283 fixedly connected to one end of the second connecting rod 282, and a fourth connecting rod 284 connected between the two third connecting rods 283 and capable of being embedded in the groove 38. The fourth connecting rod 284 is parallel to the first connecting rod 281, and the connecting end of the second connecting rod 282 and the third connecting rod 283 is hinged to the side wall of the chute seat 30. A second cylinder 25 is provided at the bottom of the chute seat 30, and a push head 37 is provided at the pushing end of the second cylinder 25. The push head 37 is used to push the wire-moving rod 28. A return spring (not shown in the figure) is provided at the bottom of the chute seat 30, one end of the return spring is mounted on the side wall of the chute seat 30, and the other end of the return spring is mounted on the wire-moving rod 28. Under the elastic force of the return spring, the fourth connecting rod 284 of the wire-pushing lever 28 is embedded in the groove 38. When the wire harness is clamped by the clamping device, the wire harness is located above the fourth connecting rod 284. If the clamping device releases the wire harness and the wire harness becomes stuck in the groove 38, the second cylinder 25 pushes the head 37 to apply a thrust to the first connecting rod 281 of the wire-pushing lever 28. The wire-pushing lever 28 rotates along the hinge point, causing the fourth connecting rod 284 of the wire-pushing lever 28 to disengage from the groove 38, thereby lifting the wire harness upward to prevent it from becoming stuck again. After the wire-pushing operation is completed, the second cylinder 25 is reset, and under the action of the return spring, the fourth connecting rod 284 is re-engaged in the groove 38 to await the next wire-clamping operation.

[0037] The thread twisting mechanism and the thread cutting mechanism in the thread end processing device of this embodiment are both installed on the side plate. Figures 6 to 9As shown in the figure, to facilitate the adjustment of the height of the wire twisting mechanism and the wire cutting mechanism relative to the base 1, in this embodiment, a second fixing block 41 and a first fixing block 39 are respectively fixedly installed on the upper and lower inner walls of the side plate on one side. A support rod 40 is used to connect the second fixing block 41 and the first fixing block 39. An adjustable-height adjusting block 42 is assembled on the support rod 40. A first guide rod 43 is horizontally arranged on one side of the adjusting block 42. One end of the first guide rod 43 is fixedly connected to the adjusting block 42, and the other end is fixedly connected to a conversion block 44. A second guide rod 45 is horizontally arranged on the other end face of the conversion block 44. The length direction of the second guide rod 45 is perpendicular to the length direction of the first guide rod 43. A scissor mounting seat 46 is installed at the end of the second guide rod 45. A lifting guide rail fixing plate 47 is fixedly installed on the back of the scissor mounting seat 46. The wire cutting mechanism and the wire twisting mechanism are arranged in a semi-enclosed cavity formed by the second guide rod 45 and the first guide rod 43, making the structures of the wire cutting mechanism and the wire twisting mechanism more compact, and also facilitating the adjustment of the height of the wire cutting mechanism and the wire twisting mechanism relative to the base 1 by adjusting the installation height of the adjusting block 42 on the support rod 40.

[0038] Further, the wire cutting mechanism includes a pneumatic shear 52 and a scissor lifting cylinder 53 for controlling the lifting of the pneumatic shear 52. A fourth guide rail 49 is vertically arranged on the back of the lifting guide rail fixing plate 47. Guide rail stoppers 51 are arranged at both ends of the fourth guide rail 49. A pneumatic shear 52 is arranged beside the fourth guide rail 49. A scissor mounting plate 50 is assembled on the side wall of the pneumatic shear 52. A fourth slider 48 is arranged on the fourth guide rail 49, and the fourth slider 48 is fixedly connected to the scissor mounting plate 50.

[0039] Furthermore, a wire twisting wheel fixing plate 54 is fixedly installed on the back of the lifting guide rail fixing plate 47 and perpendicular to the lifting guide rail fixing plate 47. A shear cylinder frame 55 is fixedly installed on the outer wall of the wire twisting wheel fixing plate 54 facing the pneumatic shear 52. A scissor lifting cylinder 53 is installed on the shear cylinder frame 55. A scissor cylinder connecting plate 59 is fixedly installed on the outer wall of the pneumatic shear 52. The pushing end of the scissor lifting cylinder 53 is fixedly connected to the scissor cylinder connecting plate 59. Under the push of the scissor lifting cylinder 53, the pneumatic shear 52 moves up and down along the fourth guide rail 49 and cuts the wire harness through the scissors at the bottom of the pneumatic shear 52.

[0040] As Figures 7 to 9As shown in the figure, the wire twisting mechanism includes a telescopic cylinder 56, a third servo motor 60, a speed reducer 62, a wire twisting driving wheel 69 and a wire twisting driven wheel 70. The telescopic cylinder 56 is fixedly installed on the back of the wire twisting wheel fixing plate 54. The cylinder push plate 57 at the bottom of the telescopic cylinder 56 is fixedly connected to the cylinder adapter plate 58. A speed reducer fixing plate 64 is vertically installed at the bottom of the cylinder adapter plate 58. The wire twisting driving wheel 69 is installed on the side of the speed reducer fixing plate 64 facing the pneumatic wire cutter 52. The speed reducer fixing plate 64 is surrounded by a first wire twisting wheel fixing plate 65 at the rear, a second wire twisting wheel fixing plate 66 at the front and a side plate 67 at the side to form a housing to cover the wire twisting driving wheel 69 therein. The wire twisting driven wheel 70 is installed at the lower part of the speed reducer fixing plate 64. The wire twisting driven wheel 70 meshes with the wire twisting driving wheel 69. The front and rear of the wire twisting driven wheel 70 are clamped by the wire twisting wheel wire guide plates 68 installed on the speed reducer fixing plate 64. A wire clamping part penetrating through the thickness direction of the wire twisting driven wheel 70 is arranged inside the wire twisting driven wheel 70. A notch 71 is arranged at the bottom of the wire twisting driven wheel 70, and the notch 71 communicates with the wire clamping part. A speed reducer 62 covered by a corner box body is arranged on the side of the speed reducer fixing plate 64 away from the pneumatic wire cutter 52. The output end of the speed reducer 62 is connected to the speed reducer fixing plate 64 through a gear ring 63. The output shaft of the speed reducer 62 drives the wire twisting driving wheel 69 to rotate. The input end of the speed reducer 62 is assembled on the input flange 61. The third servo motor 60 is installed on the input flange 61, and the third servo motor 60 drives the speed reducer 62 to operate.

[0041] Furthermore, to facilitate the control of the operation of the wire twisting mechanism, a sensor bracket 73 is also installed at the bottom of the speed reducer fixing plate 64, and the sensor 72 for collecting whether the wire harness is clamped into the wire twisting driven wheel 70 from the notch 71 is installed on the sensor bracket 73. After the sensor 72 collects the signal that the wire harness is clamped in, it feeds back to the electrical control cabinet 2, and the control system issues an instruction to the third servo motor 60, and the wire twisting driving wheel 69 drives the wire twisting driven wheel 70 to rotate to tighten the clamped multi-strand wire harness together.

[0042] When the winding machine winds the motor stator, it can be divided into a cross-over wire, a center wire and a lead wire. For the cross-over wire head treatment device, only the wire clamping command needs to be executed, while for the center wire and the lead wire, the head treatment device needs to execute the wire clamping, wire pulling, wire twisting and wire cutting commands.

[0043] After the winding machine finishes winding the stator cross-connection wires, the winding machine sends an instruction to the control system of the wire end processing device. The control system of the wire end processing device controls the first clamping cylinder 20 and the second clamping cylinder 21 in the wire clamping mechanism to open. The servo motor in the cross slide is driven by the winding machine to perform a planar movement, and the wire pulling mechanism and the wire clamping mechanism are moved from the standby position to the flying fork position of the winding machine for wire hooking. After the wire harness is hooked, the winding machine drives the cross slide to move to the wire pulling position again. After reaching the wire pulling position, the first clamping cylinder 20 and the second clamping cylinder 21 close to clamp the enameled wire. After the enameled wire is clamped, the sensor on the clamping position of the clamping cylinder lights up. The winding machine drives the cross slide to move to the cross-connection wire position again, and the winding machine is ready to wind the next wire package. The wire end processing device loosens the clamped enameled wire (i.e., the first clamping cylinder 20 and the second clamping cylinder 21 are loosened) after the winding machine finishes winding one turn. The winding machine drives the cross slide to retract the wire pulling mechanism and the wire clamping mechanism to the standby position, waiting for the next instruction from the winding machine.

[0044] After the winding machine finishes winding the stator center line or the lead wire, the winding machine sends an instruction to the control system of the wire end processing device. The control system of the wire end processing device controls the first clamping cylinder 20 and the second clamping cylinder 21 in the wire clamping mechanism to open. The servo motor in the cross slide is driven by the winding machine to perform a planar movement, and the wire pulling mechanism and the wire clamping mechanism are moved from the standby position to the flying fork position of the winding machine for wire hooking. After the wire harness is hooked, the winding machine drives the cross slide to move the wire pulling mechanism and the wire clamping mechanism to the wire cutting position again. The wire clamping mechanism starts to act. The first clamping cylinder 20 closes to clamp one end of the enameled wire. After the first clamping cylinder 20 clamps, it sends an action instruction to the wire pulling cylinder 19, and the wire pulling mechanism starts to act. The wire pulling cylinder 19 drives the second clamping cylinder 21 to gradually move away from the first clamping cylinder 20 until the enameled wire is pulled apart. After the wire pulling cylinder 19 moves in place, it sends an instruction to the clamping mechanism. The second clamping cylinder 21 in the clamping mechanism closes to clamp the other end of the enameled wire. When the second clamping cylinder 21 clamps, it sends an action instruction to the wire twisting mechanism. After receiving the action instruction, the wire twisting mechanism, the telescopic cylinder 56 drives the wire twisting mechanism to descend, so that the enameled wire is inserted into the inside of the wire twisting driven wheel 70 from the notch 71. After the sensor 72 detects that the enameled wire is inserted in place, it sends an action instruction to the third servo motor 60. The third servo motor 60 starts to drive the wire twisting driven wheel 70 to rotate to complete the wire twisting operation. After the wire twisting is completed, it sends an action instruction to the wire cutting mechanism. After receiving the action instruction, the scissors lifting cylinder 53 drives the pneumatic scissors 52 to descend and complete the wire cutting operation of the enameled wire. After the wire cutting is completed, the second clamping cylinder 21 opens to loosen one end of the enameled wire. At the same time, the wire cutting mechanism and the wire twisting mechanism rise and retract to the original standby position again, and send an action instruction to the winding machine. After receiving this instruction, the winding machine drives the cross slide to move the wire pulling mechanism and the wire clamping mechanism to the standby position, waiting for the next instruction.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wire end processing device for a motor stator winding machine, installed on the machine table of the winding machine, characterized in that: It includes a wire twisting mechanism, a wire cutting mechanism, a wire clamping mechanism and a wire pulling mechanism. The wire clamping mechanism and the wire pulling mechanism are both installed on the base through a cross slide table assembly. The cross slide table assembly is controlled by a servo motor to move along the X-axis and Y-axis directions in a plane. The base is parallel to the tabletop of the winding machine. The wire twisting mechanism and the wire cutting mechanism are both located above the wire clamping mechanism and the wire pulling mechanism, and the wire twisting mechanism and the wire cutting mechanism can move up and down respectively. A wire clamping notch is provided at the lower part of the wire twisting mechanism. The wire clamping mechanism includes two wire clamping devices arranged side by side. The wire pulling mechanism includes a wire pulling cylinder, and the wire pulling cylinder can drive one of the wire clamping devices to translate away from or towards the other wire clamping device. The cross slide table assembly includes a bottom plate installed on the base. A first guide rail is provided on the bottom plate. The bottom of a first mounting plate parallel to the bottom plate is provided with a first slider, and the first slider slides along the first guide rail. A first servo motor is provided on the bottom plate, and the first servo motor drives a first lead screw. The bottom of the first mounting plate is assembled on the first lead screw through a first nut. A third mounting plate is provided above the first mounting plate. When the first mounting plate slides along the first guide rail, it drives the third mounting plate to move synchronously. A second guide rail is provided on the third mounting plate. The length direction of the second guide rail is perpendicular to the length direction of the first guide rail. A second slider is provided on the second guide rail, and the top of the second slider is fixedly connected to a second nut. A second servo motor drives a second lead screw, and the second nut is assembled on the second lead screw. The wire clamping mechanism and the wire pulling mechanism are installed on the second nut through a connecting small plate. The wire twisting mechanism includes a third servo motor, a reducer driven by the third servo motor, and a telescopic cylinder that moves up and down. The cylinder push plate of the telescopic cylinder drives the reducer fixing plate to move up and down. The reducer is installed on the reducer fixing plate. A wire twisting wheel fixing plate is installed on the reducer fixing plate. A wire twisting driving wheel driven by the reducer is installed on the upper part of the wire twisting wheel fixing plate. A wire twisting driven wheel meshing with the wire twisting driving wheel is installed on the lower part of the wire twisting wheel fixing plate. A through wire clamping part is arranged inside the wire twisting driven wheel, and a notch is provided at the bottom of the wire twisting driven wheel, and the notch communicates with the wire clamping part.

2. The wire end processing device for a motor stator winding machine according to claim 1, characterized in that: A second mounting plate is further provided between the first mounting plate and the third mounting plate. The second mounting plate is fixed to the top of the first mounting plate. A first cylinder is provided on the second mounting plate, and the first cylinder is used to push the third mounting plate to move up and down.

3. The wire end processing device for a motor stator winding machine according to claim 1, characterized in that: Each wire clamping device includes a wire clamping cylinder and a chute seat. One end of the chute seat is provided with a sliding rod that can slide along the chute seat. A cylinder connecting block pushed by the wire clamping cylinder is fixedly connected to the sliding rod. A push head is provided at one end of the sliding rod, and a hook angle head is provided at the other end of the chute seat. The wire harness to be clamped passes through between the push heads and the hook angle heads of the two wire clamping devices, and the wire clamping cylinder drives the sliding rod to drive the push head to move towards the hook angle head to clamp the wire harness.

4. The wire end processing device for a motor stator winding machine according to claim 3, characterized in that: The push head includes a horizontal end parallel to the top surface of the chute seat and a vertical end perpendicular to the top surface of the chute seat. The vertical end of the push head is opposite to the vertical end of the hook angle head. When the push head and the hook angle head cooperate to clamp the wire harness, the top of the hook angle head is located below the horizontal end of the push head.

5. The wire end processing device for a motor stator winding machine according to claim 3, characterized in that: One end of the top of the chute seat near the hook angle head is provided with a groove. A wire deflecting rod is arranged on the chute seat. The wire deflecting rod includes a first connecting rod located at the bottom of the chute seat, second connecting rods vertically connected to both ends of the first connecting rod respectively, a third connecting rod fixedly connected to one end of the second connecting rod, and a fourth connecting rod connected between the two third connecting rods and capable of being embedded in the groove. The connecting end of the second connecting rod and the third connecting rod is hinged to the side wall of the chute seat. A second air cylinder is arranged at the bottom of the chute seat, and a top head is arranged at the pushing end of the second air cylinder. The second air cylinder pushes the top head to apply a thrust to the first connecting rod of the wire deflecting rod, so that the fourth connecting rod of the wire deflecting rod disengages from the groove.

6. The wire end processing device for a motor stator winding machine according to claim 5, characterized in that: A return spring is arranged at the bottom of the chute seat. One end of the return spring is installed on the side wall of the chute seat, and the other end of the return spring is installed on the wire deflecting rod.

7. The lead wire processing device for a motor stator winding machine according to claim 3, characterized in that: The wire pulling mechanism further includes a third guide rail. The wire clamping cylinder of one of the wire clamping devices is fixed on the slider connecting plate. The bottom of the slider connecting plate is fixedly connected to the third slider. The third slider slides along the third guide rail. The output end of the wire pulling cylinder is fixedly connected to the cylinder connecting plate. The cylinder connecting plate is fixedly connected to the slider connecting plate. The sliding direction of the third slider is perpendicular to the pushing direction of the wire clamping cylinder.

8. The wire end processing device for a motor stator winding machine according to claim 1, characterized in that: The wire cutting mechanism includes a pneumatic cutting pliers, a scissors lifting air cylinder and a vertically arranged fourth guide rail. The scissors lifting air cylinder drives the pneumatic cutting pliers to move up and down. The pneumatic cutting pliers are installed on the scissors mounting plate. The scissors mounting plate is fixedly connected to the fourth slider. The fourth slider slides up and down along the fourth guide rail.

Images