A wire cutting mechanism for a stator coil

Abstract

A stator coil wire-cutting mechanism is disclosed, which cuts the wires on a stator coil. The stator coil wire-cutting mechanism includes a gripping and flipping device, which comprises a first two-axis moving assembly, a flipping cylinder disposed at the output end of the first two-axis moving assembly, a gripping cylinder disposed at the output end of the flipping cylinder, and two grippers disposed at the output ends of the gripping cylinder. The flipping cylinder drives the gripping cylinder holding the stator coil to rotate, so that the wires are positioned downwards. The stator coil wire-cutting mechanism flips the stator coil so that the wires face the ground, thereby preventing the cut wires from remaining on the stator coil during subsequent wire-cutting operations and eliminating the need for manual cleaning. The stator coil wire-cutting mechanism requires no manual intervention throughout the entire process, has a high degree of automation, and is suitable for assembly line production.

Description

Technical Field

[0001] This invention relates to the field of stator coil manufacturing technology, and in particular to a stator coil wire cutting mechanism. Background Technology

[0002] like Figure 2 As shown, after the stator coil 50 is wound, the conductors 51 on it will have excess length that needs to be cut off. In existing production equipment, the cut waste wire is usually left on the stator coil 50 or carried by the conveyor belt to the next process for manual cleaning. For example, Chinese patent CN201520869932.X discloses a stator lead wire cutting machine. It includes a support frame, and the stator lead wire cutting machine also includes a lifting and lowering device, a self-positioning bottom mold, and a clamping cutting device. The self-positioning bottom mold is located above the stator of the motor to be processed. The self-positioning bottom mold is installed on the actuating end of the lifting and lowering device, which is installed on the support frame. The clamping cutting device is connected to the self-positioning bottom mold. The self-positioning bottom mold includes a coil cylindrical surface, a stator lead wire guide groove, an upper pressure mold groove, a lower pressure mold groove, and a cutting groove. The clamping cutting device includes a horizontal cylinder mounting plate, a clamping cylinder, a horizontal guide column, a knife holder, an upper pressure mold, a lower pressure mold, a cutting cylinder, and a knife. The mechanism can quickly cut off the excess part of the stator lead wire to the specified length. However, the remaining waste wire still needs to be handled manually, which wastes human resources. In addition, the self-positioning bottom mold cannot be adjusted in time. It can only reserve the specified wire length and cannot adjust the reserved wire length in a timely manner. Summary of the Invention

[0003] In view of this, the present invention provides a stator coil wire cutting mechanism to solve the above problems.

[0004] A stator coil wire cutting mechanism is disclosed, which cuts the conductor on a stator coil. The stator coil wire cutting mechanism includes a gripping and flipping device, a waiting device disposed on one side of the gripping and flipping device, a clamping and rotating device disposed on one side of the waiting device, and a wire cutting device disposed on one side of the clamping and rotating device. The gripping and flipping device includes a first two-axis moving assembly, a flipping cylinder disposed at the output end of the first two-axis moving assembly, a gripping cylinder disposed at the output end of the flipping cylinder, and two grippers disposed at the output end of the gripping cylinder. The flipping cylinder drives the gripping cylinder holding the stator coil to rotate, so that the conductor is positioned downwards. The waiting device includes a first positioning fixture and a second positioning fixture disposed on one side of the first positioning fixture, the first positioning fixture and the second positioning fixture having the same structure. The first positioning fixture includes a support column, at least one bending frame disposed at one end of the support column, and a positioning ring disposed on the bending frame. The first positioning fixture is used to receive the stator coil to be cut released by the gripping and flipping device, and the second positioning fixture is used to place the stator coil after the wire has been cut. The clamping and rotating device includes a second two-axis moving assembly, a rotary motor disposed at the output end of the second two-axis moving assembly, a three-jaw cylinder disposed at the output end of the rotary motor, and a three-jaw chuck disposed at the output end of the three-jaw cylinder. The gripping surface of the jaws matches the circumferential outer wall of the stator coil. The wire cutting device includes a three-axis moving assembly, a base plate disposed at the output end of the three-axis moving assembly, a wire cutting cylinder disposed on the base plate, a pair of scissors disposed at the output end of the wire cutting cylinder, a straightening cylinder disposed on one side of the base plate, a wire clamping cylinder disposed at the output end of the straightening cylinder, and a wire clamp disposed at the output end of the wire clamping cylinder. The output direction of the straightening cylinder is towards the wire cutting cylinder, and the wire clamp is bent towards the scissors. Before the wire-cutting cylinder drives the shears to cut the wire, the wire clamp clamps the wire and moves it away from the stator coil to straighten the wire.

[0005] Furthermore, the material receiving device also includes a first photoelectric sensor disposed on one side of the first positioning fixture, and a second photoelectric sensor disposed on one side of the second positioning fixture.

[0006] Furthermore, the first positioning fixture is positioned on the side close to the gripping and flipping device.

[0007] Furthermore, the inner circumferential wall of the positioning ring matches the outer circumferential wall of the stator coil.

[0008] Furthermore, the clamping and rotating device also includes a sensor disposed on one side of the rotary motor. The clamping surface of the three-jaw chuck matches the circumferential outer wall of the stator coil.

[0009] Furthermore, a sensor plate is provided at one edge of the rotary motor.

[0010] Furthermore, the wire cutting device also includes a baffle disposed on one side of the three-axis moving assembly, and a waste box disposed at the lower end of the baffle.

[0011] Compared with existing technologies, the stator coil wire cutting mechanism provided by this invention flips the stator coil with the gripping and flipping device so that the conductor faces the ground, thereby preventing the cut wire from remaining on the stator coil during subsequent wire cutting operations and saving manual cleaning. Furthermore, the mechanism adjusts the blade position of the scissors through the three-axis moving assembly, ensuring that the length of the remaining conductor is consistent, greatly improving the yield rate. The stator coil wire cutting mechanism requires no manual intervention throughout the entire process, has a high degree of automation, and is suitable for assembly line production. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the stator coil wire-cutting mechanism provided by the present invention.

[0013] Figure 2 This is a schematic diagram of the stator coil structure.

[0014] Figure 3 for Figure 1 A schematic diagram of the gripping and flipping device of the stator coil wire cutting mechanism.

[0015] Figure 4 for Figure 1 A schematic diagram of the material receiving device of the stator coil wire cutting mechanism.

[0016] Figure 5 for Figure 1 A schematic diagram of the clamping and rotating device of the stator coil wire cutting mechanism.

[0017] Figure 6 for Figure 1 A schematic diagram of the wire-cutting device in the stator coil wire-cutting mechanism. Detailed Implementation

[0018] The following provides a more detailed description of specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the scope of protection of the present invention.

[0019] like Figure 1The diagram shows a schematic representation of the stator coil wire-cutting mechanism provided by this invention. The stator coil wire-cutting mechanism includes a gripping and flipping device 10, a waiting device 20 disposed on one side of the gripping and flipping device 10, a clamping and rotating device 30 disposed on one side of the waiting device 20, and a wire-cutting device 40 disposed on one side of the clamping and rotating device 30. It is conceivable that the stator coil wire-cutting mechanism may also include other functional modules, such as a screw module, a power supply module, etc., which are technologies known to those skilled in the art and will not be described in detail here.

[0020] Please refer to the following: Figures 2 to 6 It should be noted that the stator coil wire cutting mechanism is located on an assembly line, and it is a mechanism for cutting the wires 51 on a stator coil 50. The stator coil 50 is transported to one side of the mechanism and gripped by the gripping and flipping device 10. To prevent the cut wire from remaining on the stator coil 50, the stator coil 50 needs to be flipped 180 degrees so that the wire ends face the ground before the wire cutting operation.

[0021] The gripping and flipping device 10 includes a first two-axis moving assembly 11, a flipping cylinder 12 disposed at the output end of the first two-axis moving assembly 11, a gripping cylinder 13 disposed at the output end of the flipping cylinder 12, and two grippers 14 disposed at the output ends of the gripping cylinder 13.

[0022] The first two-axis moving assembly 11 can drive the tilting cylinder 12 to move in a two-dimensional plane. This allows the stator coil 50 to be transported to the waiting device 20 after the gripping cylinder 13 has grasped it. Simultaneously, the tilting cylinder 12 rotates the gripping cylinder 13, which is holding the stator coil 50, by 180 degrees, so that the wire 51 faces downwards. The first two-axis moving assembly 11 is prior art and will not be described further here. The opposing gripping surfaces of the grippers 14 match the circumferential outer wall of the stator coil 50.

[0023] The material receiving device 20 includes a first positioning fixture 21, a second positioning fixture 22 disposed on one side of the first positioning fixture 21, a first photoelectric sensor 23 disposed on one side of the first positioning fixture 21, and a second photoelectric sensor 24 disposed on one side of the second positioning fixture 22.

[0024] The first positioning fixture 21 and the second positioning fixture 22 have the same structure and are both used to place the stator coil 50. The first positioning fixture 21 is located near the gripping and flipping device 10 and includes a support column 211, at least one folding frame 212 disposed at one end of the support column 211, and a positioning ring 213 disposed on the folding frame 212. In this embodiment, there are three folding frames 212. The folding frames 212 are arranged to avoid the conductor 51 on the stator coil 50. The inner circumferential sidewall of the positioning ring 312 matches the outer circumferential sidewall of the stator coil 50.

[0025] The first and second photoelectric sensors 23 and 24 are used to sense whether there is material being placed on the first and second positioning fixtures 21 and 22, so as to facilitate the placement and removal of the stator coil 50.

[0026] The clamping and rotating device 30 includes a second two-axis moving assembly 31, a rotary motor 32 disposed at the output end of the second two-axis moving assembly 31, a three-jaw cylinder 33 disposed at the output end of the rotary motor 32, a three-jaw chuck 34 disposed at the output end of the three-jaw cylinder 33, and a sensor 35 disposed on one side of the rotary motor 32.

[0027] The second two-axis moving assembly 31 can drive the rotary motor 32 to move in a two-dimensional plane. Thus, after the three-jaw cylinder 33 grasps the stator coil 50, it can clamp the stator coil 50 from the waiting device 20 to one side of the wire cutting device 40, so that the wire cutting device 40 can perform wire cutting operations on the stator coil 50. The second two-axis moving assembly 31 is prior art and will not be described in detail here. The clamping surface of the three-jaw chuck 34 matches the circumferential outer wall of the stator coil 50.

[0028] After the wire-cutting device 40 cuts one of the wires 51, the rotary motor 32 rotates at a certain angle, allowing the wire-cutting device 40 to cut the next wire. A sensing plate 36 is located at one edge of the rotary motor 32. After the rotary motor 32 rotates one revolution, the sensing plate 36 passes the sensor 35 once, indicating that a stator coil 50 has been cut. Then, the second two-axis moving assembly 31 drives the rotary motor 32 to move onto the second positioning fixture 22, and the three-jaw cylinder 33 lowers the stator coil 50 that has completed the cutting operation.

[0029] The wire cutting device 40 includes a three-axis moving assembly 41, a base plate 42 disposed at the output end of the three-axis moving assembly 41, a wire cutting cylinder 43 disposed on the base plate 42, a scissor 44 disposed at the output end of the wire cutting cylinder 43, a straightening cylinder 45 disposed on one side of the base plate 42, a wire clamping cylinder 46 disposed at the output end of the straightening cylinder 45, and a wire clamp 47 disposed at the output end of the wire clamping cylinder 46.

[0030] The three-axis moving assembly 43 can drive the substrate 42 to move in a three-dimensional space, so that the wire-cutting cylinder 43 can move to the stator coil 50 and cut the wire 51. The output direction of the straightening cylinder 45 is towards the wire-cutting cylinder 43. The wire clamp 47 is bent towards the scissors 44, so that the wire clamp 47 can clamp the wire 51 and pull it a short distance away from the wire clamp 47 to straighten the wire 51. This ensures that the scissors 44 cuts the wire 51 to a uniform length and also prevents the wire 51 from flying off when the scissors 44 cuts it.

[0031] The wire cutting device 40 also includes a baffle 48 disposed on one side of the three-axis moving assembly 43, and a waste box 49 disposed at the lower end of the baffle 48. The baffle 48 is a plate body that surrounds the wire cutting cylinder 43 on three sides, and its main function is to block the wire cutting position of the scissors 44, thereby preventing the residue generated when the scissors 44 cuts the wire 51 from splashing out. The waste box 49 is used to collect the residue and debris after the wire 51 has been cut.

[0032] The following describes how the stator coil wire-cutting mechanism automates the wire-cutting operation: The gripping and flipping device 10 picks up the stator coil 50 from the production line and flips it so that the conductor 51 faces the ground. Then, the stator coil 50 is placed on the first positioning fixture 21. After the clamping and rotating device 30 removes the stator coil 50, the next stator coil 50 is placed on the first positioning fixture 21. The clamping and rotating device 30 removes the first stator coil 50 placed on the first positioning fixture 21 and moves it to one side of the wire-cutting device 40 for wire cutting. After completing the wire cutting operation, the clamping and rotating device 30 places the stator coil 50 on the second positioning fixture 22 and removes the second stator coil 50 placed on the first positioning fixture 21 for wire cutting. The gripping and flipping device 10 grips and flips the stator coil 50 on the second positioning fixture 22, then puts the stator coil 50 that has completed the wire cutting operation back onto the production line, and then grips the third stator coil 50 from the production line and places it on the first positioning fixture 21... This cycle is repeated to complete the wire cutting operation of the stator coil 50, thereby improving the degree of automation.

[0033] Compared with existing technologies, the stator coil wire cutting mechanism provided by this invention flips the stator coil 50 with the gripping and flipping device 10 so that the conductor faces the ground, thereby preventing the cut wire from remaining on the stator coil 50 during subsequent wire cutting operations and saving manual cleaning. Furthermore, the mechanism adjusts the blade position of the scissors 44 through the three-axis moving component 43, ensuring that the remaining conductor 51 is of uniform length, greatly improving the yield rate. The stator coil wire cutting mechanism requires no manual intervention throughout the entire process, has a high degree of automation, and is suitable for assembly line production.

[0034] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions or improvements within the spirit of the present invention are covered within the scope of the claims of the present invention.

Claims

1. A stator coil wire-cutting mechanism, characterized in that: The stator coil wire cutting mechanism includes a gripping and flipping device, a waiting device disposed on one side of the gripping and flipping device, a clamping and rotating device disposed on one side of the waiting device, and a wire cutting device disposed on one side of the clamping and rotating device. The gripping and flipping device includes a first two-axis moving assembly, a flipping cylinder disposed at the output end of the first two-axis moving assembly, a gripping cylinder disposed at the output end of the flipping cylinder, and two grippers disposed at the output end of the gripping cylinder. The flipping cylinder drives the gripping cylinder holding the stator coil to rotate, so that the wire is positioned downwards. The waiting device includes a first positioning fixture and a second positioning fixture disposed on one side of the first positioning fixture. The first positioning fixture and the second positioning fixture have the same structure. The first positioning fixture includes a support column, at least one bending frame disposed at one end of the support column, and a positioning ring disposed on the bending frame. The first positioning fixture is used to receive the stator coil to be cut released by the gripping and flipping device. The second positioning fixture is used to place the stator coil after the wire has been cut. The clamping and rotating device includes a second two-axis moving assembly, a rotary motor disposed at the output end of the second two-axis moving assembly, a three-jaw cylinder disposed at the output end of the rotary motor, and a three-jaw chuck disposed at the output end of the three-jaw cylinder. The clamping surface of the jaws matches the circumferential outer wall of the stator coil. The wire cutting device includes a three-axis moving assembly, a base plate disposed at the output end of the three-axis moving assembly, a wire cutting cylinder disposed on the base plate, a pair of scissors disposed at the output end of the wire cutting cylinder, a straightening cylinder disposed on one side of the base plate, a wire clamping cylinder disposed at the output end of the straightening cylinder, and a wire clamp disposed at the output end of the wire clamping cylinder. The output direction of the straightening cylinder is towards the wire cutting cylinder, and the wire clamp is bent towards the scissors. Before the wire cutting cylinder drives the scissors to cut the wire, the wire clamp clamps the wire and moves in a direction away from the stator coil to straighten the wire.

2. The stator coil wire cutting mechanism according to claim 1, characterized in that: The material waiting device further includes a first photoelectric sensor disposed on one side of the first positioning fixture, and a second photoelectric sensor disposed on one side of the second positioning fixture.

3. The stator coil wire cutting mechanism according to claim 1, characterized in that: The first positioning fixture is located on the side close to the gripping and flipping device.

4. The stator coil wire cutting mechanism according to claim 1, characterized in that: The inner circumferential wall of the positioning ring matches the outer circumferential wall of the stator coil.

5. The stator coil wire cutting mechanism according to claim 1, characterized in that: The clamping and rotating device also includes a sensor located on one side of the rotary motor, and the clamping surface of the three-jaw chuck matches the circumferential outer wall of the stator coil.

6. The stator coil wire cutting mechanism according to claim 1, characterized in that: An induction plate is provided at one edge of the rotating motor.

7. The stator coil wire cutting mechanism according to claim 1, characterized in that: The wire cutting device also includes a baffle disposed on one side of the three-axis moving assembly, and a waste box disposed at the lower end of the baffle.

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