Assembling and welding mechanism for concentrated winding iron core

Abstract

The utility model discloses an assembling and welding mechanism for a concentrated winding iron core. The device comprises a base, a hollow rotating platform, a first base table and a second base table, the hollow rotating platform is fixed to the base, the first base table and the second base table are fixed to the hollow rotating platform, and the hollow rotating platform rotates by 180 degrees to drive the first base table and the second base table to be interchanged in position. The first base station and the second base station are each provided with a positioning rotating tool, a pneumatic clamping jaw disc and a jacking mechanism in a rotating mode, the positioning rotating tools are used for assembling the single-tooth iron core into the stator, the pneumatic clamping jaw discs are arranged in the positioning rotating tools, the pneumatic clamping jaw discs are used for internally supporting the positioning rotating tools, and the jacking mechanisms are used for jacking the stator out of the positioning rotating tools. According to the utility model, the first base station and the second base station realize stator assembling and welding double stations, the first base station and the second base station rotate to exchange positions, the requirements of avoiding a framework and a coil are met, the welding operation and the assembling operation are continuously circulated, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor production equipment technology, specifically to an assembly and welding mechanism for a centralized winding core. Background Technology

[0002] Currently, the concentrated winding of a motor stator consists of one or more individual windings assembled into a single stator. This requires careful handling to avoid damaging the coils, and the welding gun must not interfere with the equipment. During assembly, the frame and coils must be avoided, and the assembly position must always be close to the operator. Therefore, a rotating assembly and positioning fixture is needed to ensure consistent welding point positions after each assembly. This fixture should also allow for continuous cycling of welding and assembly operations, and facilitate easy detachment of the stator winding from the fixture after welding, thereby improving production efficiency. Utility Model Content

[0003] The purpose of this invention is to provide an efficient assembly and welding mechanism for centralized winding cores used in stator production.

[0004] The purpose of this utility model is achieved as follows.

[0005] An assembly and welding mechanism for a concentrated winding core includes a base, a hollow rotating platform, a first base platform, and a second base platform. The hollow rotating platform is fixed to the base, and the first and second base platforms are respectively fixed to the hollow rotating platform. One of the first and second base platforms is in a first position, and the other is in a second position. The first position is the core assembly position, and the second position is the core welding position. Rotating the hollow rotating platform 180 degrees causes the positions of the first and second base platforms to interchange.

[0006] Both the first and second bases are rotatably equipped with a positioning and rotating fixture, a pneumatic chuck, and a lifting mechanism. The positioning and rotating fixture is used to assemble the single-tooth iron core into a stator. The pneumatic chuck is placed inside the positioning and rotating fixture and is used to internally support the positioning and rotating fixture. The lifting mechanism is used to push the stator out of the positioning and rotating fixture.

[0007] The first and second bases of this utility model realize a dual-station stator assembly and welding. The first and second bases rotate and interchange positions to meet the requirements of avoiding the frame and coil. The welding and assembly operations are continuously cycled to improve production efficiency. The lifting mechanism ensures that the winding stator can be easily detached from the tooling after assembly.

[0008] The above technical solution can be further improved as follows.

[0009] Furthermore, a base frame is provided on the hollow rotating platform, and the hollow rotating platform drives the base frame to rotate. The first base platform and the second base platform are respectively fixed at both ends of the base frame.

[0010] The first and second bases can easily rotate 180 degrees, and the structure is simple and easy to implement.

[0011] Furthermore, both the first and second bases are equipped with thrust bearings, and the positioning and rotating fixture can be manually rotated on the corresponding first or second base via the thrust bearings.

[0012] The positioning rotary fixture is easy to rotate manually, and easy to rotate when assembling the iron core.

[0013] Furthermore, the positioning and rotating fixture is annular in shape. The positioning and rotating fixture has two stepped surfaces on the same plane in the axial direction. A clearance groove is provided between the two stepped surfaces. The two stepped surfaces are used for axial positioning of the iron core. The positioning and rotating fixture has several openings and a keyway in the axial direction. The openings are arranged in a ring along the circumferential direction. The openings penetrate at least one stepped surface. The openings are used for the lifting mechanism to pass through the positioning and rotating fixture to push out the stator.

[0014] The clearance slots avoid the ends of the winding core to prevent damage to the coils. The positioning and rotating fixtures meet the requirements for stator assembly, welding, and ejection.

[0015] Furthermore, the positioning rotary tooling is provided with a limiting step on its outer periphery, and the corresponding first base and second base are provided with a number of limiting blocks around the outer periphery of the positioning rotary tooling. The limiting blocks and the limiting step are limited in the axial and radial directions and are in clearance fit.

[0016] This ensures that the positioning rotating fixture can be manually rotated, while also preventing the positioning rotating fixture from rising together with the stator during the lifting process.

[0017] Furthermore, the pneumatic chuck disc has multiple chucks, at least one of which has a clearance notch for the key pin to pass through.

[0018] The pneumatic chuck disc pushes the chuck to easily center the iron core, and the avoidance notch facilitates the insertion of the key pin for iron core positioning.

[0019] Furthermore, both the first and second bases are provided with key sockets, and a sensing device is provided inside the key sockets to detect whether a key is inserted into the key socket.

[0020] The lifting mechanism can only operate after the sensor detects the insertion of the key pin.

[0021] Furthermore, both the first and second bases are provided with electrodes that elastically contact the positioning rotating tooling.

[0022] Furthermore, the lifting mechanism includes a lifting bracket, a cylinder, a lifting seat, and several push rods. The lifting bracket is fixed to the bottom of both the first base and the second base. The bottom of the cylinder is fixed to the lifting bracket, and the telescopic end of the top of the cylinder is fixedly connected to the lifting seat. Several push rods are evenly distributed on the lifting seat, and the bottom of the push rods is connected and fixed to the lifting seat. The first base and the second base have clearance holes for the push rods to pass through. The cylinder pushes the lifting seat to move upward, and the lifting seat pushes the push rods through the clearance holes to push out the stator inside the positioning rotating fixture.

[0023] The lifting mechanism has a simple structure and the stator can be easily ejected.

[0024] Furthermore, a radiation shielding partition is provided between the first and second base stations.

[0025] Radiation shielding panels ensure that splicing and welding stations are separated, guaranteeing user safety.

[0026] The overall structure of this utility model is reasonably arranged. The first and second bases realize the dual station of stator assembly and welding. The first and second bases can rotate and interchange positions to meet the requirements of avoiding the frame and coil. The welding and assembly operations are continuously cycled to improve production efficiency. The lifting mechanism ensures that the winding stator can be easily detached from the tooling after assembly. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of Example 1.

[0028] Figure 2 for Figure 1 Enlarged view of section A.

[0029] Figure 3 This is a top view of Example 1.

[0030] Figure 4 for Figure 3 Enlarged view of section B in the middle.

[0031] Figure 5 This is a side view of Embodiment 1.

[0032] Figure 6 This is a schematic diagram of the stator assembly structure using the positioning and rotating tooling in Example 1.

[0033] Figure 7 This is a schematic diagram of the lifting mechanism ejecting the stator in Example 1. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0035] Example 1, see Figure 1-7As shown, a centralized winding core assembly and welding mechanism includes a base 1, a hollow rotating platform 2, a base frame 3, a first base 4, a second base 5, a positioning rotating fixture 6, a lifting mechanism, a pneumatic chuck disc 11, and a radiation shielding plate 12. The lifting mechanism includes a lifting bracket 7, a cylinder 8, a lifting seat 9, and a lifting rod 10. The pneumatic chuck disc 11 is a pneumatic three-jaw chuck.

[0036] A hollow rotating platform 2 is fixed on the base 1. The base frame 3 is installed on the top of the hollow rotating platform 2. The first base 4 and the second base 5 are symmetrically arranged at both ends of the top surface of the base frame 3. Each of the first base 4 and the second base 5 has 12 clearance holes corresponding to the top rod 10. Both the first base 4 and the second base 5 are provided with key pin sockets 15, and a sensing device 16 is provided inside the key pin sockets 15. Preferably, the sensing device 16 is a sensor switch.

[0037] Both the first base 4 and the second base 5 are equipped with thrust bearings 13, and the positioning rotary fixture 6 is mounted on the thrust bearings 13. The positioning rotary fixture 6 is annular in shape and has two stepped surfaces 31 located on the same plane along its axial direction. A clearance groove 30 is provided between the two stepped surfaces 31. The two stepped surfaces are used for axial positioning of the iron core. The positioning rotary fixture 6 has 12 evenly distributed openings 14 and a keyway 28 along its circumference in the axial direction. Each of the 12 openings 14 extends through one of the stepped surfaces. The positioning rotary fixture 6 can be easily rotated manually along its circumference.

[0038] The first base 4 and the second base 5 are both equipped with the pneumatic chuck disk 11 in the positioning and rotating fixture 6. One of the chucks has a clearance opening 17 for the key pin insertion port 15. The chuck is pneumatically driven by the chuck to perform telescopic movement in the radial direction. The radiation shielding partition 12 is provided on the base frame 3 between the first base 4 and the second base 5.

[0039] In this embodiment, four limiting blocks 18 are evenly distributed along the circumference of the positioning rotary fixture 6 on the first base 4 and the second base 5, respectively, and the limiting blocks are fixed to the corresponding base bolts. The positioning rotary fixture 6 has a limiting step 19 on its outer circumference, and the limiting blocks 18 and the limiting step 19 are limited in the axial and radial directions and have a clearance fit. Electrodes 20 are also fixed on both the first base 4 and the second base 5, and the electrodes 20 are in elastic contact with the positioning rotary fixture 6.

[0040] The bottom of the first base 4 and the second base 5 are respectively provided with U-shaped lifting brackets 7. Lifting cylinders 8 are fixed on the lifting brackets 7. Lifting seats 9 are provided on the cylinders. The lifting seats 9 are threadedly connected to the bottom of 12 evenly distributed push rods 10. The top of the push rods 10 passes through the corresponding clearance holes.

[0041] The first base 4 and the second base 5 are respectively equipped with pneumatic lifting control buttons 21 for controlling the lifting of two control cylinders 8, pneumatic telescopic control buttons 22 for controlling the extension and retraction of pneumatic chuck discs 11, two electric control buttons 23 for controlling the rotation of the hollow rotating platform, and an emergency stop switch 24.

[0042] During the working process, the first position is: the first base 4 is rotated to the iron core assembly position, and the second base 5 is in the welding position.

[0043] On the first base 4, the hand-held single-tooth iron core 25 with winding is inserted into the positioning rotating fixture 6. The positioning rotating fixture 6 is manually rotated by an angle, and the single-tooth iron core 25 is inserted again. Gradually, a stator is assembled. After the keyway 26 of the stator 29, the keyway 28 of the positioning rotating fixture 6, the clearance port 17 and the key pin insertion port 15 are aligned, the key pin 27 is inserted into the key pin insertion port 15. After the sensing device 16 senses the key pin 27, the pneumatic telescopic control button 22 is pressed. The jaws of the jaw disk 11 open and tighten the positioning rotating fixture 6. The control electric button 23 is pressed to rotate the hollow rotating platform 2 to the second position: the second base 5 is rotated to the iron core assembly position, and the first base 4 is in the welding position, that is, the positions of the first base 4 and the second base 5 are interchanged.

[0044] Next, the stator is assembled in the positioning and rotating fixture 6 of the second base 5 through the above actions, and the assembled stator 29 on the first base 4 begins to be welded.

[0045] Then, after the stator 29 of the first base 4 is welded and the stator 29 of the second base 5 is assembled, press the control electric button 23, and the hollow rotating platform 2 rotates to the first position: the first base 4 rotates to the iron core assembly position, the second base 5 is in the welding position, remove the key pin 27, and press the pneumatic telescopic control button 22 to make the jaws of the jaw disk 11 retract.

[0046] Finally, press the pneumatic lifting control button 21 of cylinder 8 to raise the telescopic end of cylinder 8. The telescopic end drives the push rod 10 on the lifting seat 9 to rise together. The push rod 10 passes through the clearance hole, through the opening 14, and abuts against the stator 29. The push rod 10 continues to rise and push out the stator 29. At the same time, the limiting pressure block 18 restricts the positioning rotating fixture 6 from rising through the limiting step 19, so that the stator 29 is separated from the positioning rotating fixture 6. After taking out the stator 29, press the lowering button of the pneumatic lifting control button 21 of cylinder 8 to reset the push rod 10.

[0047] This allows the first base 4 and the second base 5 to alternate between the assembly position and the welding position, which can improve the stator production efficiency and ensure the quality of the stator.

[0048] The terms used in this utility model, such as "first," "second," etc., do not indicate any order, quantity, or importance, but are only used for distinction.

[0049] In this invention, terms such as "a" or "an" are used to indicate not a limitation on the quantity, but rather to indicate the existence of at least one of the mentioned objects.

[0050] In this utility model, terms indicating direction or location such as front end, rear end, top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc., are used to indicate relative positions rather than absolute positions.

[0051] Terms used in this invention, such as "approximately," "overall," "approximately," and "similar," are limiting terms used to indicate features that exist but allow for certain deviations. The amount of deviation allowed may vary depending on the specific context.

Claims

1. A welding and assembly mechanism for a concentrated winding core, characterized in that, The system includes a base, a hollow rotating platform, a first base platform, and a second base platform. The hollow rotating platform is fixed to the base, and the first and second base platforms are symmetrically fixed to the hollow rotating platform. One of the first and second base platforms is in a first position, and the other is in a second position. The first position is the core assembly position, and the second position is the core welding position. Rotating the hollow rotating platform 180 degrees causes the positions of the first and second base platforms to interchange. Both the first and second bases are rotatably equipped with a positioning and rotating fixture, a pneumatic chuck, and a lifting mechanism. The positioning and rotating fixture is used to assemble the single-tooth iron core into a stator. The pneumatic chuck is placed inside the positioning and rotating fixture and is used to internally support the positioning and rotating fixture. The lifting mechanism is used to push the stator out of the positioning and rotating fixture.

2. The assembly and welding mechanism for the concentrated winding core according to claim 1, characterized in that, The hollow rotating platform is equipped with a base frame, and the hollow rotating platform drives the base frame to rotate. The first base and the second base are respectively fixed at both ends of the base frame.

3. The assembly and welding mechanism for the concentrated winding core according to claim 1, characterized in that, Both the first and second bases are equipped with thrust bearings, and the positioning and rotating fixture can be manually rotated on the corresponding first or second base via the thrust bearings.

4. The assembly and welding mechanism for concentrated winding cores according to claim 1, characterized in that, The positioning and rotating fixture is circular in shape. The positioning and rotating fixture has two stepped surfaces on the same plane in the axial direction. A clearance groove is provided between the two stepped surfaces. The two stepped surfaces are used for axial positioning of the iron core. The positioning and rotating fixture has several openings and a keyway in the axial direction. The openings are arranged in a ring along the circumference. The openings penetrate at least one stepped surface. The openings are used for the lifting mechanism to pass through the positioning and rotating fixture to push out the stator.

5. The assembly and welding mechanism for concentrated winding cores according to claim 1, characterized in that, The positioning rotary fixture has a limiting step on its outer periphery, and the corresponding first base and second base are provided with several limiting blocks around the outer periphery of the positioning rotary fixture. The limiting blocks and the limiting step are limited in the axial and radial directions and are in clearance fit.

6. The assembly and welding mechanism for concentrated winding cores according to claim 1, characterized in that, The pneumatic chuck disc has multiple chucks, at least one of which has a clearance notch for the key pin to pass through.

7. The assembly and welding mechanism for concentrated winding cores according to claim 1, characterized in that, Both the first and second bases are equipped with key sockets, and each key socket contains a sensing device used to detect whether a key is inserted into the key socket.

8. The assembly and welding mechanism for concentrated winding cores according to claim 1, characterized in that, Electrodes that elastically contact the positioning rotating tooling are provided on both the first and second bases.

9. The assembly and welding mechanism for concentrated winding cores according to claim 1, characterized in that, The lifting mechanism includes a lifting bracket, a cylinder, a lifting seat, and several push rods. The lifting bracket is fixed to the bottom of both the first and second bases. The bottom of the cylinder is fixed to the lifting bracket, and the telescopic end of the top of the cylinder is fixedly connected to the lifting seat. Several push rods are evenly distributed on the lifting seat, and the bottom of the push rods is connected and fixed to the lifting seat. The first and second bases have clearance holes for the push rods to pass through. The cylinder pushes the lifting seat upward, and the lifting seat pushes the push rods through the clearance holes to push out the stator inside the positioning rotating fixture.

10. The assembly and welding mechanism for a concentrated winding core according to claim 1, characterized in that, A radiation shielding partition is installed between the first and second base platforms.

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