A stator torsion mechanism and a stator welding machine

Abstract

The present invention discloses a stator twisting mechanism, which is used for twisting the stator core, wherein the stator core is stacked by a plurality of stator loose sheets; a twisting groove parallel to the axis of the stator core is arranged on the inner wall of the stator core; the mechanism comprises a base, a vertically arranged limiting column is arranged on the base, and the stator core is sleeved on the limiting column; a limiting groove is arranged on the outer wall of the base, a swing rod is arranged in the limiting groove, the swing rod is located in the limiting groove, a convex strip is arranged on the swing rod, the convex strip part is located outside the limiting groove, the middle part of the convex strip is hinged with the telescopic end of the telescopic device, and the telescopic device is installed on the base; when the stator core is sleeved on the limiting column, the convex strip is located in the twisting groove; a driving mechanism is arranged below the limiting column, and the driving mechanism has a telescopic rod, and the end of the telescopic rod is hinged with the lower end of the swing rod. The present invention has the advantages of simple structure, simple operation, low cost, high efficiency, etc.

Description

Technical Field

[0001] The invention relates to a stator twisting mechanism and a stator welding machine, belonging to the technical field of motor stator processing equipment, and used for twisting and welding a motor stator. Background Art

[0002] The permanent magnet synchronous generator has the advantages of simple structure, small size, high efficiency and high power factor. The skew slot design of the permanent magnet motor stator can reduce the loss caused by tooth harmonics and reduce noise. The manufacturing process of the skew slot of the stator core is generally to put the stator punching sheet on the mold and stack it, and ensure the accurate twist angle and the uniform stacking of the punching sheet through process assembly. The original manufacturing process is to locate the inner diameter of the stator punching sheet and the punching sheet slot, and embed the punching sheet one by one into the positioning inner tube. The straight groove of the inner tube is equipped with a process key to achieve the slope control of the stacked punching sheet and press and weld. The original equipment has the following problems in the assembly process of the stator punching sheet: 1. The process of positioning the twisting is complicated, and the stator punching sheet needs to be assembled one by one through the inner diameter positioning, and the assembly efficiency is low; 2. After the twisting and stacking, the stator punching sheet cannot be tightened immediately, and it is easy to shift during the transfer of the material to the next station. Summary of the invention

[0003] The object of the present invention is to provide a stator twisting mechanism which has the advantages of simple structure, simple operation, low cost, high efficiency, etc. and can quickly twist the stator of a motor.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A stator torsion mechanism, used for twisting a stator core, the stator core is composed of a plurality of stacked stator sheets; a torsion groove parallel to the axis of the stator core is arranged on the inner wall; the mechanism comprises a base, a vertically arranged limit column is arranged on the base, the stator core is sleeved on the limit column; a limit groove is provided on the outer wall of the base, a swing rod is arranged in the limit groove, the swing rod is located in the limit groove, a convex strip is arranged on the swing rod, the convex strip part is located outside the limit groove, the middle part of the convex strip is hinged to the telescopic end of a telescopic device, and the telescopic device is installed on the base; when the stator core is sleeved on the limit column, the convex strip is located in the torsion groove; a driving mechanism is arranged below the limit column, the driving mechanism has a telescopic rod, and the end of the telescopic rod is hinged to the lower end of the swing rod.

[0006] In the aforementioned stator torsion mechanism, the swing device is a telescopic cylinder.

[0007] In the aforementioned stator torsion mechanism, the limiting groove includes a first side wall and a second side wall, the first side wall is composed of a first upper side wall and a first lower side wall, and the second side wall is composed of a second upper side wall and a second lower side wall; the first upper side wall is vertically arranged, the first lower side wall is inclined, the second upper side wall is inclined, the second lower side wall is vertically arranged, and the first lower side wall and the second upper side wall are parallel.

[0008] A stator welding machine comprises the stator torsion mechanism described above. The welding machine also comprises a fixed frame, a fixed plate is fixedly mounted on the upper part of the fixed frame, a first lifting device is mounted on the fixed plate, the telescopic end of the first lifting device faces the stator torsion structure below, a mounting frame is fixed on the telescopic end of the first lifting device, a driving cylinder and a driving ring are mounted on the mounting frame, a welding gun is mounted on the driving ring, the driving ring is slidably arranged on the mounting frame, and the piston rod of the driving cylinder is hinged to the driving ring.

[0009] In the aforementioned stator welding machine, a second lifting device is also installed on the fixed plate, the lifting end of the second lifting device faces downward, a support plate is installed on the lifting end of the second lifting device, a pressure block is installed on the support plate, the lower surface of the pressure block is the same shape as the upper surface of the stator core, and the pressure block is located above the stator core.

[0010] In the aforementioned stator welding machine, the first lifting device includes a driving motor, the driving motor is fixed on the fixed plate, a lead screw is also rotatably arranged on the fixed plate, the driving motor is connected to the lead screw through a transmission belt; a lifting block is arranged on the lead screw, the lifting block cooperates with the lead screw through a thread, a connecting rod is fixed on the lifting block, a slide rail is fixed to the lower end of the connecting rod, and the driving ring is arranged in the slide rail.

[0011] Compared with the prior art, the present invention has the advantages of simple structure, simple operation, low cost, high efficiency, etc., and can quickly twist the stator of a motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of a stator welding machine;

[0013] Figure 2 It is a schematic diagram of the internal structure of the stator welding machine;

[0014] Figure 3 It is a three-dimensional structural schematic diagram of a stator welding machine;

[0015] Figure 4 This is a partial enlarged view of the stator welding machine;

[0016] Figure 5 This is a partial enlarged view of the stator welding machine;

[0017] Figure 6 It is a structural diagram of the drive structure.

[0018] Figure markings: 1- convex strip, 2- rocker arm, 3- first upper side wall, 4- limiting column, 5- first side wall, 6- base, 7- first lower side wall, 8- limiting groove, 9- second upper side wall, 10- second side wall, 11- second lower side wall, 12- telescopic device, 13- fixed frame, 14- support plate, 15- fixed plate, 16- second lifting device, 17- first lifting device, 18- pressure block, 19- lead screw, 20- lifting block, 21- connecting rod, 22- driving motor, 23- driving belt, 24- slide rail, 25- welding gun, 26- driving cylinder, 27- driving ring, 28- driving mechanism, 29- telescopic rod.

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. DETAILED DESCRIPTION

[0020] Embodiment 1 of the stator torsion mechanism: A stator torsion mechanism, used for twisting a stator core, wherein the stator core is stacked by a plurality of stator sheets; a torsion groove parallel to the axis of the stator core is arranged on the inner wall; the mechanism comprises a base 6, on which a vertically arranged limit column 4 is arranged, and the stator core is sleeved on the limit column 4; a limit groove 8 is provided on the outer wall of the base 6, a rocker 2 is arranged in the limit groove 8, the rocker 2 is located in the limit groove 8, a convex strip 1 is provided on the rocker 2, the convex strip 1 is partially located outside the limit groove 8, the middle part of the convex strip 1 is hinged to the telescopic end of the telescopic device, and the telescopic device is installed on the base; when the stator core is sleeved on the limit column 4, the convex strip 1 is located in the torsion groove; a driving mechanism 28 is arranged below the limit column, and the driving mechanism 28 has a telescopic rod 29, and the end of the telescopic rod 29 is hinged to the lower end of the rocker. The telescopic device 12 is a swing cylinder.

[0021] Embodiment 2 of the stator torsion mechanism: A stator torsion mechanism, used for twisting a stator core, wherein the stator core is stacked by a plurality of stator sheets; a torsion groove parallel to the axis of the stator core is arranged on the inner wall; the mechanism comprises a base 6, on which a vertically arranged limit column 4 is arranged, and the stator core is sleeved on the limit column 4; a limit groove 8 is provided on the outer wall of the base 6, a rocker 2 is arranged in the limit groove 8, the rocker 2 is located in the limit groove 8, a convex strip 1 is provided on the rocker 2, the convex strip 1 is partially located outside the limit groove 8, the middle part of the convex strip 1 is hinged to the telescopic end of the telescopic device, and the telescopic device is installed on the base; when the stator core is sleeved on the limit column 4, the convex strip 1 is located in the torsion groove; a driving mechanism 28 is arranged below the limit column, and the driving mechanism 28 has a telescopic rod 29, and the end of the telescopic rod 29 is hinged to the lower end of the rocker. The telescopic device 12 is a swing cylinder.

[0022] The limiting groove 8 includes a first side wall 5 and a second side wall 10, the first side wall 5 is composed of a first upper side wall 3 and a first lower side wall 7, and the second side wall 10 is composed of a second upper side wall 9 and a second lower side wall 11; the first upper side wall 3 is vertically arranged, the first lower side wall 7 is inclined, the second upper side wall 9 is inclined, the second lower side wall 11 is vertically arranged, and the first lower side wall 7 and the second upper side wall 9 are parallel.

[0023] Embodiment 1 of a stator welding machine: A stator welding machine comprises a stator torsion mechanism as described in the above embodiment, the welding machine further comprises a fixed frame 13, a fixed plate 15 is fixedly mounted on the upper part of the fixed frame 13, a first lifting device 17 is mounted on the fixed plate 15, the telescopic end of the first lifting device 17 faces the stator torsion structure below, a mounting frame is fixed on the telescopic end of the first lifting device 17, a driving cylinder 26 and a driving ring 27 are mounted on the mounting frame, a welding gun 25 is mounted on the driving ring 27, the driving ring 27 is slidably arranged on the mounting frame, and the piston rod of the driving cylinder 26 is hinged to the driving ring 27.

[0024] Embodiment 2 of the stator welding machine: A stator welding machine comprises a stator torsion mechanism as described in the above embodiment, the welding machine further comprises a fixed frame 13, a fixed plate 15 is fixedly mounted on the upper part of the fixed frame 13, a first lifting device 17 is mounted on the fixed plate 15, the telescopic end of the first lifting device 17 faces the stator torsion structure below, a mounting frame is fixed on the telescopic end of the first lifting device 17, a driving cylinder 26 and a driving ring 27 are mounted on the mounting frame, a welding gun 25 is mounted on the driving ring 27, the driving ring 27 is slidably arranged on the mounting frame, and the piston rod of the driving cylinder 26 is hinged to the driving ring 27.

[0025] The fixed plate 15 is also provided with a second lifting device 16, the lifting end of which faces downwards, and a support plate 14 is provided on the lifting end of which a pressure block 18 is provided. The lower surface of the pressure block 18 is in the same shape as the upper surface of the stator core, and the pressure block 18 is located above the stator core. The first lifting device 17 includes a driving motor 22, which is fixed on the fixed plate 15, and a lead screw 19 is rotatably provided on the fixed plate 15. The driving motor 22 is connected to the lead screw 19 through a transmission belt 23; a lifting block 20 is provided on the lead screw 19, and the lifting block 20 is matched with the lead screw 19 through a thread, and a connecting rod 21 is fixed on the lifting block 20, and a slide rail 24 is fixed at the lower end of the connecting rod 21, and the driving ring 27 is provided in the slide rail 24.

[0026] The working principle of an embodiment of the present invention is as follows: when in use, firstly, the stator laminations are sleeved on the limiting column 4, so that the convex strip 1 is located at the corresponding position of the stator core, and then the convex strip 1 of the swing rod 2 is located in the torsion groove of the stator core by controlling the telescopic device 12; then, the telescopic rod 29 is driven to move by controlling the driving structure, and the telescopic rod 29 drives the lower part of the swing rod 2 to move. Since the swing rod 2 is hinged at the telescopic end of the telescopic device, the swing rod 2 will rotate with the telescopic end of the telescopic device as the center of the circle, so that the swing rod 2 is tilted, and the tilted swing rod 2 drives the stator laminations to twist. Preferably, the driving mechanism 28 of this embodiment has two telescopic rods 29, and the two telescopic rods 29 run in opposite directions, so that the stator laminations can be twisted more smoothly.

[0027] Then, the second lifting device 16 is controlled to lower the pressing block 18, which fixes the stator segments in a vertical direction to prevent the stator segments from axial or circumferential displacement during welding. The pressing block 18 is located in the middle of the driving ring 27, so there is no interference between the two.

[0028] The driving ring 27 is driven to move downward by controlling the first lifting device 17. During the movement, the cylinder 26 is driven to drive the driving ring 27 to rotate, and the driving ring 27 drives the welding gun 25 to rotate. Under the combination of the downward and rotating actions, the welding gun 25 moves along the spiral direction, and the welding of the stator core is completed during the movement.

Claims

1. A stator welding machine, It is characterized in that The invention comprises a stator twisting mechanism, which is used for twisting a stator core, wherein the stator core is composed of a plurality of stator loose sheets stacked together; a twisting groove parallel to the axis of the stator core is arranged on the inner wall of the stator core; the stator twisting mechanism comprises a base (6), a vertically arranged limit column (4) is arranged on the base (6), and the stator core is sleeved on the limit column (4); a limit groove (8) is arranged on the outer wall of the base (6), and a swing rod (2) is arranged in the limit groove (8), and the swing rod (2) is located in the limit groove. The swing arm (2) is provided with a convex strip (1), the convex strip (1) is partially located outside the limiting slot (8), the middle part of the convex strip (1) is hinged to the telescopic end of the telescopic device, and the telescopic device is installed on the base; when the stator core is sleeved on the limiting column (4), the convex strip (1) is located in the torsion slot; a driving mechanism (28) is provided below the limiting column, the driving mechanism (28) has a telescopic rod (29), the end of the telescopic rod (29) is hinged to the lower end of the swing arm; The limiting groove (8) comprises a first side wall (5) and a second side wall (10); the first side wall (5) is composed of a first upper side wall (3) and a first lower side wall (7); the second side wall (10) is composed of a second upper side wall (9) and a second lower side wall (11); the first upper side wall (3) is vertically arranged, the first lower side wall (7) is inclined, the second upper side wall (9) is inclined, the second lower side wall (11) is vertically arranged, and the first lower side wall (7) and the second upper side wall (9) are parallel; The welding machine also includes a fixed frame (13), a fixed plate (15) is fixedly mounted on the upper part of the fixed frame (13), a first lifting device (17) is mounted on the fixed plate (15), the telescopic end of the first lifting device (17) faces the stator torsion structure below, a mounting frame is fixed on the telescopic end of the first lifting device (17), a driving cylinder (26) and a driving ring (27) are mounted on the mounting frame, a welding gun (25) is mounted on the driving ring (27), the driving ring (27) is slidably arranged on the mounting frame, and a piston rod of the driving cylinder (26) and the driving ring (27) are hinged; A second lifting device (16) is also installed on the fixed plate (15), the lifting end of the second lifting device (16) faces downward, a support plate (14) is installed on the lifting end of the second lifting device (16), a pressing block (18) is installed on the support plate (14), the lower surface of the pressing block (18) and the upper surface of the stator core have the same shape, and the pressing block (18) is located above the stator core; The first lifting device (17) comprises a driving motor (22), the driving motor (22) being fixed on the fixing plate (15), a lead screw (19) being rotatably arranged on the fixing plate (15), the driving motor (22) being connected to the lead screw (19) via a transmission belt (23); a lifting block (20) being arranged on the lead screw (19), the lifting block (20) being engaged with the lead screw (19) via a thread, a connecting rod (21) being fixed on the lifting block (20), a slide rail (24) being fixed at the lower end of the connecting rod (21), and the driving ring (27) being arranged in the slide rail (24).

2. A stator welding machine according to claim 1, It is characterized in that The telescopic device (12) is a telescopic cylinder.

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