A stator automatic wire trimming machine and a wire trimming method thereof

Abstract

The present invention relates to a stator automatic wire trimming machine and a wire trimming method thereof, comprising a processing table, on which a product conveyor belt and an automatic wire trimming station, a first manipulator, a visual inspection station and a second manipulator are provided; the automatic wire trimming station is provided with a product jig, a transverse movement unit, a wire management unit and a wire trimming unit; the wire management unit comprises a wire management frame, on which a mounting seat and a cylinder for driving the mounting seat are longitudinally slidably provided, and a wire management jig is provided on the lower surface of the mounting seat; the wire management jig comprises a positioning column, a rotating plate and a limiting step, the rotating plate is provided with a wire clamping unit, the wire clamping unit comprises a wire clamping head, an infrared transmitting tube and an infrared receiving tube, and the mounting seat is provided with a control board and a rotating motor; by applying the method of the present application, a positioning-free wire management operation of the stator can be realized, and the method can be applicable to the processing of stators with a variety of different numbers of wire clamping slots, greatly simplifying the structure, and having a high degree of automation, and realizing automatic wire management and wire trimming operations of the stator.

Description

Technical Field

[0001] The present invention relates to the technical field of motor processing, and more particularly to a stator automatic wire trimming machine and a wire trimming method thereof. Background Art

[0002] The stator is usually composed of a stator core and a coil wound on the stator core. After the stator core is wound by a winding machine, multiple joints are usually left. At this time, manual intervention is required to further press the wire ends into the wire grooves on the stator and then cut them short with pliers. However, since this step involves manual operation, it will affect the entire automated production line and the consistency of the products, and the labor load of the workers is also relatively large. The existing wire management structure requires precise positioning of the stator and the design of the jig to ensure reliable positioning before the wire management operation can be performed. This involves the coordination of many components, which increases the overall cost of the equipment and energy consumption. There is a need for a stator automatic wire cutting machine and a wire cutting method that do not require additional positioning components and positioning jigs for this step. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a stator automatic wire trimming machine and a wire trimming method of the stator automatic wire trimming machine in response to the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A stator automatic wire trimming machine is constructed, which includes a processing table, on which a product conveyor belt and an automatic wire trimming station located on one side of the product conveyor belt, a first manipulator cooperating with the automatic wire trimming station, a visual inspection station and a second manipulator cooperating with the visual inspection station are provided; the automatic wire trimming station is provided with a product fixture, a transverse movement unit for driving the product fixture to move transversely, a wire management unit for pressing and managing the product on the product fixture, and a wire trimming unit located downstream of the wire management unit; the wire management unit includes a wire management frame, on which a mounting seat and a cylinder for driving the mounting seat are longitudinally slidably provided, A wire management jig is provided on the lower surface of the mounting seat; the wire management jig includes a positioning column extending into the inner hole of the stator for positioning, a rotating plate arranged around the outside of the positioning column, and a C-shaped limiting step semi-surrounding the rotating plate. The rotating plate is provided with a plurality of wire clamping units corresponding one-to-one to the wire clamping grooves, and the wire clamping unit includes a cross-shaped wire clamping head and an infrared transmitting tube and an infrared receiving tube located on both sides of the cross-shaped wire clamping head. The mounting seat is provided with a control board that receives the signal of the infrared receiving tube and a rotating motor that drives the rotating plate to rotate. The rotating motor is electrically connected to the control board and is controlled by it.

[0006] The stator automatic wire trimming machine described in the present invention, wherein the wire trimming unit includes a wire trimming seat and a lifting unit that drives the wire trimming seat to rise and fall; the wire trimming seat is provided with a mounting plate and a deflection motor that drives the mounting plate to rotate; the mounting plate is provided with pneumatic scissors and an air blowing head that cooperates with the pneumatic scissors; when trimming the thread, the deflection motor is controlled by the control panel to drive the pneumatic scissors to move one by one to the positions corresponding to the multiple thread clamping heads to perform thread trimming.

[0007] The stator automatic wire trimming machine described in the present invention, wherein the transverse movement unit includes a base plate, two side-by-side transverse movement track bars are provided on the base plate, the product jig is slidably arranged on the two transverse movement track bars, and a screw assembly is provided on the base plate to drive the product jig to slide.

[0008] The stator automatic wire trimming machine described in the present invention, wherein the screw rod assembly is located on the outside of any of the transverse track bars and a cross bar is provided at the movable end of the screw rod assembly, the length direction of the cross bar is perpendicular to the sliding direction of the product jig; the product jig is provided with a slot for the cross bar to extend into; a material receiving hopper corresponding to the wire trimming unit is provided on the bottom plate, and the material receiving hopper is located between the two transverse track bars.

[0009] The stator automatic wire trimmer described in the present invention, wherein a mounting chamber is provided in the mounting seat, the rotating plate is rotatably connected to the positioning column, an outer gear ring is provided on the upper surface edge of the rotating plate, the outer gear ring is located in the mounting chamber, and the movable end of the rotating motor is provided with a driving gear meshing with the outer gear ring.

[0010] In the stator automatic thread trimmer of the present invention, the control board is arranged on the upper surface of the rotating piece, and the rotating motor is invertedly installed on the mounting seat with the movable end extending into the mounting cavity.

[0011] In the stator automatic wire trimming machine of the present invention, a through-hole slip ring for routing the rotating piece is provided on the positioning column, and the rotating motor is connected to the terminal end of the through-hole slip ring.

[0012] The stator automatic wire trimming machine described in the present invention, wherein the visual inspection station is provided with a workpiece placement seat, an annular light source located above the workpiece placement seat, and a photographing unit located above the annular light source.

[0013] The stator automatic wire trimming machine described in the present invention is characterized in that a plurality of NG stations are provided on the processing table, and the visual inspection station and the plurality of NG stations are distributed side by side along the material moving direction of the second manipulator.

[0014] A method for trimming a stator automatic wire trimmer, using the stator automatic wire trimmer as described above, wherein the method comprises the steps of:

[0015] The stator is transported by the product conveyor belt;

[0016] When the stator reaches the picking position of the first manipulator, the first manipulator grabs the stator and places it on the product jig;

[0017] The traverse unit drives the product jig to move under the line management jig;

[0018] The mounting seat moves downward for a first distance, the positioning post extends into the inner hole of the stator for positioning, the rotating motor drives the rotating piece to rotate, and the infrared transmitting tube and the infrared receiving tube operate;

[0019] When the multiple infrared receiving tubes cannot receive any signal, the multiple wire clamping heads arrive at the position where they are aligned with the multiple wire clamping slots on the stator, and the control board controls the rotating motor to stop moving.

[0020] The mounting seat moves downward for a second distance, and the wire clamping head extends into the wire clamping groove to compress the internal wire ends;

[0021] The mounting seat moves upward and resets, and the transverse movement unit drives the product fixture to move to the bottom of the thread trimming unit, and the thread trimming unit performs thread trimming;

[0022] The traverse unit drives the product fixture to its initial position, and the first manipulator moves the stator back to the product conveyor belt;

[0023] When the product conveyor belt transports the stator to the picking position of the second manipulator, the second manipulator grabs the stator and moves it to the visual inspection station for visual inspection;

[0024] The second robot moves the qualified stators back to the product conveyor belt, and the unqualified stators are placed in the NG station by the second robot.

[0025] The beneficial effects of the present invention are as follows: the stator is transported by the product conveyor belt; when the stator reaches the material picking position of the first manipulator, the first manipulator grabs the stator and places it on the product jig; the transverse movement unit drives the product jig to move to the bottom of the wire management jig; the mounting seat descends a first distance, the positioning column extends into the inner hole of the stator for positioning, the rotating motor drives the rotating piece to rotate, and the infrared transmitting tube and the infrared receiving tube operate; when multiple infrared receiving tubes cannot receive signals, at this time, multiple wire clamping heads arrive at a position that is one by one opposite to multiple wire clamping slots on the stator, and the control board controls the rotating motor to stop moving; the mounting seat descends a second distance, the wire clamping heads extend into the wire clamping slots to press the internal wire ends; the mounting seat resets upward, and the transverse movement unit drives The product fixture moves to the bottom of the wire trimming unit, and the wire trimming unit performs wire trimming; the transverse movement unit drives the product fixture to the initial position, and the stator is moved back to the product conveyor belt by the first robot; when the product conveyor belt transports the stator to the material picking position of the second robot, the second robot grabs the stator and moves it to the visual inspection station for visual inspection; the stator that passes the inspection is moved back to the product conveyor belt by the second robot, and the stator that fails the inspection is placed in the NG station by the second robot; by applying the method of the present application, the non-positioning wire management operation of the stator can be realized, and it can be applicable to the processing of stators with a variety of different numbers of wire slots, greatly simplifying the structure, and having a high degree of automation, and can realize automatic wire management and wire trimming operations of the stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive efforts.

[0027] Figure 1 This is a structural diagram of a stator automatic thread trimmer according to a preferred embodiment of the present invention;

[0028] Figure 2 yes Figure 1 A in the middle is an enlarged schematic diagram;

[0029] Figure 3 This is a schematic diagram of the structure of the stator automatic wire trimming machine wire fixture of a preferred embodiment of the present invention;

[0030] Figure 4 This is a cross-sectional view of a wire jig for an automatic stator wire trimming machine according to a preferred embodiment of the present invention;

[0031] Figure 5 This is a structural schematic diagram of a thread trimming unit of a stator automatic thread trimming machine according to a preferred embodiment of the present invention;

[0032] Figure 6It is a flow chart of the thread trimming method of the stator automatic thread trimmer according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the following will be a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work shall fall within the scope of protection of the present invention.

[0034] The stator automatic thread trimmer of the preferred embodiment of the present invention is as follows: Figure 1 See also Figure 2-Figure 5 , including a processing table, on which are provided a product conveyor belt 1 and an automatic thread trimming station located on one side of the product conveyor belt 1, a first manipulator 3 cooperating with the automatic thread trimming station, a visual inspection station and a second manipulator 5 cooperating with the visual inspection station; the automatic thread trimming station is provided with a product fixture 20, a transverse movement unit 21 for driving the product fixture 20 to move transversely, a thread management unit 22 for pressing and managing the product on the product fixture 20, and a thread trimming unit 23 located downstream of the thread management unit 22;

[0035] The wire management unit 22 includes a wire management frame 220, a mounting seat 221 and a cylinder 222 for driving the mounting seat 221 are longitudinally slidably provided on the wire management frame 220, and a wire management fixture 223 is provided on the lower surface of the mounting seat 221; the wire management fixture 223 includes a positioning column 2230 extending into the inner hole of the stator for positioning, a rotating piece 2231 arranged around the outside of the positioning column 2230, and a C-shaped limiting step 2232 semi-enclosing the rotating piece 2231 (for downward limiting, positioning the outer contour of the stator, and also for the rotating piece 2231 and its upper portion). The rotating piece 2231 is provided with a plurality of line-holding units 2233 corresponding to the line-holding slots one by one. The line-holding unit 2233 includes a cross-shaped line-holding head 22330 and an infrared emitting tube 22331 and an infrared receiving tube 22332 located on both sides of the cross-shaped line-holding head 22330. The mounting base 221 is provided with a control board 2210 that receives signals from the infrared receiving tube 22332 and a rotating motor 2211 that drives the rotating piece 2231 to rotate. The rotating motor 2211 is electrically connected to the control board 2210 and is controlled by it.

[0036] The stator is transported by the product conveyor belt 1; when the stator reaches the picking position of the first manipulator 3, the first manipulator 3 grabs the stator and places it on the product fixture 20; the transverse movement unit 21 drives the product fixture 20 to move to the bottom of the wire management fixture 223; the mounting seat 221 moves downward a first distance, the positioning column 2230 extends into the inner hole of the stator for positioning, the rotating motor 2211 drives the rotating piece 2231 to rotate, and the infrared emitting tube 22331 and the infrared receiving tube 22332 operate (the infrared emitting tube 22331 emits infrared rays obliquely toward the stator). , the infrared receiving tube 22332 receives the reflected infrared light obliquely); when the multiple infrared receiving tubes 22332 do not receive any signal (the specific state is: when reaching the edge of the wire-holding slot, the multiple infrared receiving tubes will receive the reflected infrared light, and when entering the wire-holding slot, the multiple infrared receiving tubes will lose their sensitivity to the infrared light at the same time, that is, at this time, it can be determined that the position of the wire-holding slot has been found), the multiple wire-holding heads arrive at a position that is directly aligned with the multiple wire-holding slots on the stator, and the control board 2210 controls the rotating motor 2211 to stop moving;

[0037] The mounting seat 221 moves downward a second distance, and the thread clamping head 22330 extends into the thread clamping groove to compress the internal thread end; the mounting seat 221 moves upward and resets, and the transverse movement unit 21 drives the product fixture 20 to move to the bottom of the thread trimming unit 23, and the thread trimming unit 23 trims the thread;

[0038] The traverse unit 21 moves the product fixture 20 to its initial position, and the first manipulator 3 moves the stator back to the product conveyor belt 1. When the product conveyor belt 1 transports the stator to the pick-up position of the second manipulator 5, the second manipulator 5 grabs the stator and moves it to the visual inspection station for visual inspection. The second manipulator moves the stator back to the product conveyor belt 1 if it passes the inspection, while the second manipulator places the stator to the NG station if it fails the inspection.

[0039] By applying the method of the present application, the positioning-free wire-managing operation of the stator can be realized, which is applicable to the processing of stators with a variety of different numbers of wire slots, greatly simplifies the structure, and has a high degree of automation, and can realize automatic wire-managing and cutting operations of the stator.

[0040] Preferably, the thread trimming unit 23 includes a thread trimming seat 230 and a lifting unit 231 (a cylinder, a screw rod, etc. can be implemented) for driving the thread trimming seat 230 to rise and fall; the thread trimming seat 230 is provided with a mounting plate 2300 and a deflection motor 2301 for driving the mounting plate to rotate; the mounting plate 2300 is provided with a pneumatic scissors 2302 and a blowing head 2303 cooperating with the pneumatic scissors (for cooperating to blow off the cut thread ends); when trimming the thread, the deflection motor 2301 is controlled by the control board 2210 to drive the pneumatic scissors 2302 to move one by one to the positions corresponding to the multiple thread clamping heads 22330 to trim the thread;

[0041] After the control board 2210 obtains the position of the stator by relying on the cooperation of the infrared emitting tube 22331 and the infrared receiving tube 22332, the cutting position of the pneumatic scissors 2302 will be adjusted accordingly according to the position coordinate information, thereby realizing precise thread cutting operation without the cooperation of positioning components.

[0042] Preferably, the transverse movement unit 21 includes a base plate 210, on which two side-by-side transverse movement rails 211 are provided, and the product fixture 20 is slidably provided on the two transverse movement rails 211. The base plate 210 is provided with a screw assembly 212 for driving the product fixture 20 to slide; the screw assembly 212 is located on the outside of any transverse movement rail 211 and a cross bar 213 is provided at the movable end of the screw assembly 212, and the length direction of the cross bar 213 is perpendicular to the sliding direction of the product fixture 20; the product fixture 20 is provided with a slot 200 for the cross bar 213 to extend into; the base plate 210 is provided with a receiving hopper 2100 corresponding to the thread trimming unit 23, and the receiving hopper 2100 is located between the two transverse movement rails 211;

[0043] During operation, the screw assembly 212 drives the cross bar 213 to move, and then drives the product fixture 20 to slide on the two transverse track bars 211; using this design method, the transverse drive part can avoid the lower area of ​​the product fixture, so that after the shearing is completed, the blown-off thread ends fall directly into the receiving hopper 2100.

[0044] Preferably, an installation chamber is provided in the mounting seat 221, the rotating piece 2231 is rotatably connected to the positioning column 2230, an outer ring gear 2234 is provided on the upper surface edge of the rotating piece 2231, the outer ring gear 2234 is located in the mounting chamber, and the movable end of the rotating motor 2211 is provided with a driving gear 2212 that meshes with the outer ring gear; the control board 2210 is provided on the upper surface of the rotating piece 2231, and the rotating motor 2211 is invertedly installed on the mounting seat 221 and the movable end extends into the installation chamber; a through-hole slip ring 2235 for routing the rotating piece 2231 is provided on the positioning column 2230, and the rotating motor 2211 is connected to the terminal end of the through-hole slip ring 2235; the structure is reasonable and compact, which can well complete the driving rotation, routing and signal transmission of the rotating piece 2231, and at the same time has good anti-interference performance.

[0045] Preferably, the visual inspection station is provided with a workpiece placement seat 40, an annular light source 41 located above the workpiece placement seat 40, and a photographing unit 42 located above the annular light source; the structure is simple and the photographing reliability is good.

[0046] Preferably, a plurality of NG stations 6 are provided on the processing table, and the visual inspection station and the plurality of NG stations are distributed side by side along the material moving direction of the second manipulator 5, so as to facilitate visual inspection and NG unloading.

[0047] A stator automatic wire trimming machine trimming method, using the stator automatic wire trimming machine as described above, such as Figure 6 As shown, the method includes the steps of:

[0048] S01: The stator is transported by the product conveyor belt;

[0049] S02: When the stator reaches the picking position of the first manipulator, the first manipulator grabs the stator and places it on the product jig;

[0050] S03: The traverse unit drives the product fixture to move to the bottom of the line management fixture;

[0051] S04: The mounting seat moves downward for a first distance, the positioning post extends into the inner hole of the stator for positioning, the rotating motor drives the rotating piece to rotate, and the infrared transmitting tube and the infrared receiving tube operate;

[0052] S05: When the multiple infrared receiving tubes cannot receive any signal, the multiple wire clamping heads are aligned with the multiple wire clamping slots on the stator, and the control board controls the rotating motor to stop moving;

[0053] S06: The mounting seat moves downward for a second distance, and the wire clamping head extends into the wire clamping groove to press the internal wire ends tightly;

[0054] S07: The mounting seat moves upward and resets, and the transverse movement unit drives the product fixture to move to the bottom of the thread trimming unit, and the thread trimming unit performs thread trimming;

[0055] S08: The traverse unit drives the product fixture to the initial position, and the first manipulator moves the stator back to the product conveyor belt;

[0056] S09: When the product conveyor belt transports the stator to the picking position of the second manipulator, the second manipulator grabs the stator and moves it to the visual inspection station for visual inspection;

[0057] S10: The second robot moves the qualified stators back to the product conveyor belt, and the unqualified stators are placed in the NG station by the second robot;

[0058] By applying the method of the present application, the positioning-free wire-managing operation of the stator can be realized, which is applicable to the processing of stators with a variety of different numbers of wire slots, greatly simplifies the structure, and has a high degree of automation, and can realize automatic wire-managing and cutting operations of the stator.

[0059] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A stator automatic wire cutting machine, characterized in that: The present invention comprises a processing table, wherein the processing table is provided with a product conveyor belt and an automatic wire cutting station located on one side of the product conveyor belt, a first manipulator cooperating with the automatic wire cutting station, a visual inspection station and a second manipulator cooperating with the visual inspection station; the automatic wire cutting station is provided with a product fixture, a transverse movement unit for driving the product fixture to move transversely, a wire management unit for pressing and organizing the product on the product fixture, and a wire cutting unit located downstream of the wire management unit; the wire management unit comprises a wire management frame, a mounting seat and a cylinder for driving the mounting seat are longitudinally slidably provided on the wire management frame, and a wire management fixture is provided on the lower surface of the mounting seat; the wire management fixture comprises a positioning column extending into the inner hole of the stator for positioning, a rotating plate arranged around the outside of the positioning column and a C-shaped limiting step semi-surrounding the rotating plate, the The rotating plate is provided with a plurality of wire holding units corresponding to the wire holding slots one by one, and the wire holding unit includes a cross-shaped wire holding head and an infrared emitting tube and an infrared receiving tube located on both sides of the cross-shaped wire holding head; the mounting seat is provided with a control board that receives the signal of the infrared receiving tube and a rotating motor that drives the rotating plate to rotate, and the rotating motor is electrically connected to the control board and controlled by it; the wire cutting unit includes a wire cutting seat and a lifting unit that drives the wire cutting seat to rise and fall; the wire cutting seat is provided with a mounting plate and a deflection motor that drives the mounting plate to rotate; the mounting plate is provided with pneumatic scissors and an air blowing head that cooperates with the pneumatic scissors; when cutting the thread, the deflection motor is controlled by the control board to drive the pneumatic scissors to move one by one to the positions corresponding to the plurality of wire holding heads to cut the thread.

2. The stator automatic thread trimming machine according to claim 1, characterized in that: The transverse movement unit includes a base plate, on which two side-by-side transverse movement rails are arranged, and the product fixture is slidably arranged on the two transverse movement rails. The base plate is provided with a screw assembly that drives the product fixture to slide.

3. The stator automatic thread trimming machine according to claim 2, characterized in that: The screw rod assembly is located on the outside of any of the transverse track bars and a cross bar is provided at the movable end of the screw rod assembly, the length direction of the cross bar is perpendicular to the sliding direction of the product jig; a slot for the cross bar to extend into is provided on the product jig; a material receiving hopper corresponding to the thread cutting unit is provided on the bottom plate, and the material receiving hopper is located between the two transverse track bars.

4. The stator automatic thread trimming machine according to claim 1, characterized in that: An installation chamber is provided in the installation seat, the rotating plate is rotatably connected to the positioning column, an outer gear ring is provided on the upper surface edge of the rotating plate, the outer gear ring is located in the installation chamber, and a driving gear meshing with the outer gear ring is provided at the movable end of the rotating motor.

5. The stator automatic thread trimming machine according to claim 4, characterized in that: The control board is arranged on the upper surface of the rotating piece, and the rotating motor is invertedly mounted on the mounting seat with the movable end extending into the mounting cavity.

6. The stator automatic thread trimming machine according to claim 5, characterized in that: The positioning column is provided with a through-hole slip ring for routing the rotating piece, and the rotating motor is connected to the terminal of the through-hole slip ring.

7. The stator automatic thread trimming machine according to claim 1, characterized in that: The visual inspection station is provided with a workpiece placement seat, an annular light source located above the workpiece placement seat, and a photographing unit located above the annular light source.

8. The stator automatic thread trimming machine according to claim 1, characterized in that: A plurality of NG stations are provided on the processing table, and the visual inspection station and the plurality of NG stations are distributed side by side along the material moving direction of the second robot.

9. A method for trimming a stator automatic wire trimmer, using the stator automatic wire trimmer according to any one of claims 1 to 8, characterized in that: The method comprises the steps of: The stator is transported by the product conveyor belt; When the stator reaches the picking position of the first manipulator, the first manipulator grabs the stator and places it on the product jig; The traverse unit drives the product jig to move under the line management jig; The mounting seat moves downward for a first distance, the positioning post extends into the inner hole of the stator for positioning, the rotating motor drives the rotating piece to rotate, and the infrared transmitting tube and the infrared receiving tube operate; When the multiple infrared receiving tubes cannot receive any signal, the multiple wire clamping heads arrive at the position where they are aligned with the multiple wire clamping slots on the stator, and the control board controls the rotating motor to stop moving. The mounting seat moves downward for a second distance, and the wire clamping head extends into the wire clamping groove to compress the internal wire ends; The mounting seat moves upward and resets, and the transverse movement unit drives the product fixture to move to the bottom of the thread trimming unit, and the thread trimming unit performs thread trimming; The traverse unit drives the product fixture to its initial position, and the first manipulator moves the stator back to the product conveyor belt; When the product conveyor belt transports the stator to the picking position of the second manipulator, the second manipulator grabs the stator and moves it to the visual inspection station for visual inspection; The second robot moves the qualified stators back to the product conveyor belt, and the unqualified stators are placed in the NG station by the second robot.

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