Motor end stator winding wire cutter

Abstract

The invention belongs to the technical field of motor disassembly and repair, and discloses a motor end stator winding wire cutter which comprises a fixing plate, the fixing plate is rotationally connected with a vertical rotating shaft, the fixing plate is provided with a driving mechanism which is in driving connection with the rotating shaft, the bottom end of the rotating shaft is fixedly connected with a rotating block, and the rotating block is in sliding connection with a cutter bar; when the rotating shaft rotates, the tool nose of the tool bar revolves around the rotating shaft; a propelling mechanism is arranged between the fixing plate and the cutter bar, and when the cutter point revolves forwards, the propelling mechanism drives the cutter bar to extend outwards to increase the revolution radius of the cutter point. The winding cutting device is reasonable in structure, the driving mechanism drives the cutter bar to revolve to cut from the inner side of a winding, the propelling mechanism is arranged to drive the cutter bar to extend outwards when the cutter bar revolves, the cutting radius is increased, the winding is cut off step by step, manual cutter holding cutting is not needed any more, the working intensity is reduced, the safety is improved, the working efficiency is improved, and a stator is prevented from being damaged.

Description

Technical Field

[0001] The invention belongs to the technical field of motor dismantling and repairing, and in particular relates to a stator winding wire cutter at the end of a motor. Background Art

[0002] The stator winding of an electric motor may sometimes burn out due to various reasons such as overload and overvoltage, and the winding needs to be replaced. To replace the winding, the screws need to be removed to open the end cover of the motor, and then the central rotor needs to be taken out. The winding of the stator part of the inner wall of the casing needs to be cut along the end face of the stator. Generally, the end enameled wire of the winding is cut off manually with a chisel, and then the winding is removed.

[0003] The disadvantages of using a chisel to cut the enameled wire are that it is labor-intensive and time-consuming, inefficient, easy to injure hands, and it is also very easy to damage the motor stator.

[0004] From this perspective, a stator winding cutter at the end of the motor was developed and designed. Summary of the invention

[0005] In order to overcome the above technical problems, the present invention provides a stator winding wire cutter at the end of a motor, which can automatically rotate after installation and automatically feed from the inner ring to the outside to gradually cut the winding copper wire.

[0006] The present invention adopts the following technical solutions:

[0007] The stator winding wire cutter at the end of the motor comprises a fixed plate, the fixed plate is rotatably connected to a vertical rotating shaft, the fixed plate is equipped with a driving mechanism to drive the rotating shaft, the bottom end of the rotating shaft is fixedly connected to a rotating block, and the rotating block is slidably connected to a knife rod; when the rotating shaft rotates, the tip of the knife rod revolves around the rotating shaft; a propulsion mechanism is arranged between the fixed plate and the knife rod, and when the knife tip revolves in the positive direction, the propulsion mechanism drives the knife rod to extend outward to increase the orbital radius of the knife tip.

[0008] Preferably, the propulsion mechanism includes a vertical cylinder coaxially surrounding the rotating shaft, the top of the vertical cylinder is fixedly connected to the bottom surface of the fixed plate, the bottom end of the vertical cylinder is coaxially fixedly connected to the ring gear, the top surface of the rotating block is rotatably connected to the horizontal gear one, the ring gear is meshed with gear one, the gears are coaxially fixedly connected to gear two located inside the rotating block, and gear three is also rotatably arranged inside the rotating block, the gear two is meshed with gear three, the gear three is coaxially fixedly connected to gear four, the side wall of the knife rod has a rack section, and the gear four is meshed with the rack section.

[0009] Preferably, the radius of gear one is greater than that of the ring gear, the radius of gear three is greater than that of gear two, and the radius of gear three is greater than that of gear four.

[0010] Preferably, the outer periphery of the fixing plate is connected to a plurality of mounting plates arranged in a circumferential array, and radial long slot holes are provided on the mounting plates, and screws are placed in the long slot holes.

[0011] Preferably, the bottom surface of the mounting plate is radially slidably connected to a slider, the slider has a vertical through hole, the through hole is aligned with the long slot hole, the screw passes through the through hole, the bottom surface of the fixed plate is rotatably connected to a swivel, a pull rod is connected between the swivel and each slider, and the pull rod, swivel and slider are all hinged on a vertical axis.

[0012] Preferably, the hinge point between the pull rod and the slider is located at a corner of the slider close to the adjacent slider in the counterclockwise direction.

[0013] Preferably, the driving mechanism is a motor, the motor is mounted on the top surface of the fixed plate via a reduction gearbox, and the motor is connected to the rotating shaft via the reduction gearbox.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention is provided with a fixed plate, a driving mechanism, a rotating shaft, a rotating block, and a knife rod. The driving mechanism drives the knife rod to revolve to cut from the inner side of the winding, and a propulsion mechanism is provided to drive the knife rod to extend outward when the knife rod revolves, thereby increasing the cutting radius and gradually cutting off the winding. It is no longer necessary to hold a chisel for cutting, thereby reducing work intensity, improving safety, improving work efficiency, and not easily damaging the stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of the present invention;

[0017] Figure 2 It is an overall schematic diagram of the present invention (removing the bottom wall of the rotating block);

[0018] Figure 3 is a top view of the present invention;

[0019] Figure 4 yes Figure 3 Longitudinal section view along AA.

[0020] Description of reference numerals:

[0021] 1. Fixed plate; 2. Vertical cylinder; 3. Rotating shaft; 4. Rotating block; 40. Knife hole; 5. Knife rod; 6. Motor; 7. Ring gear; 8. Gear 1; 9. Gear 2; 10. Gear 3; 11. Gear 4; 12. Rack segment; 13. Mounting plate; 14. Long slot hole; 15. Screw; 16. Slider; 17. Pull rod; 18. Swivel. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. Unless otherwise specified, the raw materials and equipment used can be purchased from the market or are commonly used in the art. The methods in the embodiments are conventional methods in the art unless otherwise specified. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] Embodiment 1

[0024] The stator winding wire cutter at the end of the motor comprises a fixing plate 1, the outer periphery of the fixing plate 1 is connected to three mounting plates 13 arranged in a circumferential direction, a radial long slot hole 14 is provided on the mounting plate 13, a screw 15 is placed in the long slot hole 14, the fixing plate 1 is fixedly mounted on one end of the motor with the end cover removed by means of the mounting plate 13 and the screw 15, the screw 15 is screwed into the screw hole on the motor housing originally used for mounting the end cover, the long slot hole 14 enables the position of the screw 15 to be radially adjusted, and is suitable for being installed on motors 6 of different sizes, the fixing plate 1 is rotatably connected to the vertical rotating shaft 3, The fixed plate 1 is equipped with a driving mechanism to drive the connecting shaft 3. The driving mechanism is a motor 6. The motor 6 is installed on the top surface of the fixed plate 1 through a reduction box. The motor 6 is connected to the rotating shaft 3 through the reduction box. The bottom end of the rotating shaft 3 is fixedly connected to the rotating block 4. The rotating block 4 has a knife hole 40. A knife rod 5 is slidably connected in the knife hole 40. When the rotating shaft 3 rotates, the tip of the knife rod 5 revolves around the rotating shaft 3 and can cut the outer periphery. A propulsion mechanism is arranged between the fixed plate 1 and the knife rod 5. When the knife tip revolves in the positive direction, the propulsion mechanism drives the knife rod 5 to extend outward to increase the orbital radius of the knife tip. Figure 1 and Figure 2 As shown, the propulsion mechanism includes a vertical cylinder 2 coaxially surrounding the rotating shaft 3, the top of the vertical cylinder 2 is fixedly connected to the bottom surface of the fixed plate 1, the bottom end of the vertical cylinder 2 is coaxially fixedly connected to the ring gear 7, the top surface of the rotating block 4 is rotatably connected to the horizontal gear 1 8, the ring gear 7 is meshed with the gear 1 8, the gear 1 8 is coaxially fixedly connected to the gear 2 9 located inside the rotating block 4, and the rotating block 4 also rotatably arranges a gear 3 10 inside, the gear 2 9 meshes with the gear 3 10, the gear 3 10 is coaxially fixedly connected to the gear 4 11, the side wall of the knife rod 5 has a rack segment 12, the gear 4 11 meshes with the rack segment 12, and the radius of the gear 1 8 is larger than the ring gear 7, the radius of the gear 3 10 is larger than the gear 2 9, and the radius of the gear 3 10 is larger than the gear 4 11, forming a reduction gear set, through layer-by-layer deceleration, and finally making: every time the knife tip rotates 360°, the orbital radius increases by 1mm.

[0025] The method for cutting the stator winding at the end of a motor adopts the above-mentioned stator winding cutter at the end of the motor, and comprises the following steps:

[0026] S1. After removing the end cover of the motor and taking out the central rotor, place the fixing plate 1 on the motor port, screw the screw 15 into the screw hole of the motor outer wall that originally fixed the end cover, so that the shaft 3 is located at the rotor shaft of the motor. A washer can be placed between the mounting plate 13 and the screw hole to make the tip of the knife bar 5 slightly higher than the upper end surface of the stator;

[0027] S2. Start the motor 6, which drives the shaft 3 through the reduction gear box to drive the rotating block 4 to rotate clockwise (from top view, the same below), and the tool tip revolves;

[0028] S3. As the gear 1 8 rotates passively clockwise around the gear ring 7, the gear 2 9 rotates clockwise, the gear 3 10 rotates counterclockwise, and the gear 4 11 rotates counterclockwise to drive the rack segment 12 to drive the cutter bar 5 to continuously feed in the direction of the knife tip, and the knife tip moves outward while revolving, cutting the copper wire from the inside to the outside circle by circle, and finally cutting off all the ends of the winding;

[0029] Embodiment 2

[0030] The difference between this embodiment and the first embodiment is that the bottom surface of the mounting plate 13 is radially slidably connected to the slider 16, the slider 16 has a vertical through hole, the through hole is aligned with the long slot hole 14, the screw 15 passes through the through hole, the bottom surface of the fixed plate 1 is rotatably connected to the swivel 18, a pull rod 17 is connected between the swivel 18 and each slider 16, the pull rod 17 and the swivel 18 and the slider 16 are all hinged on the vertical axis, and the hinge point of the pull rod 17 and the slider 16 is located at a corner of the slider 16 close to the adjacent slider 16 in the counterclockwise direction.

[0031] By rotating the rotating ring 18, the positions of all the sliders 16 can be adjusted simultaneously, and all the sliders 16 can be kept on the same concentric circle of the rotating shaft 3. Figure 2 As shown, when the rotating ring 18 is rotated counterclockwise (looking down), all the sliders 16 are simultaneously pulled inward by the pull rod 17, and when the rotating ring 18 is rotated clockwise (looking down), all the sliders 16 are simultaneously pushed outward by the pull rod 17. The position of the screw 15 is conveniently adjusted, and the installation of the device is convenient.

[0032] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the above embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A stator winding cutter for a motor end, comprising a fixing plate, characterized in that: The fixed plate is rotatably connected to a vertical rotating shaft, and the fixed plate is equipped with a driving mechanism to drive the rotating shaft. The bottom end of the rotating shaft is fixedly connected to a rotating block, and the rotating block is slidably connected to a knife rod. When the rotating shaft rotates, the tip of the knife rod revolves around the rotating shaft. A propulsion mechanism is arranged between the fixed plate and the knife rod, and when the knife tip revolves in the positive direction, the propulsion mechanism drives the knife rod to extend outward to increase the orbital radius of the knife tip.

2. The motor end stator winding wire cutter according to claim 1, characterized in that: The propulsion mechanism includes a vertical cylinder coaxially surrounding the rotating shaft, the top of the vertical cylinder is fixedly connected to the bottom surface of the fixed plate, the bottom end of the vertical cylinder is coaxially fixedly connected to the gear ring, the top surface of the rotating block is rotatably connected to the horizontal gear one, the gear ring is meshed with gear one, the gear is coaxially fixedly connected to gear two located inside the rotating block, and gear three is also rotatably arranged inside the rotating block, the gear two is meshed with gear three, the gear three is coaxially fixedly connected to gear four, the side wall of the knife rod has a rack section, and the gear four is meshed with the rack section.

3. The motor end stator winding wire cutter according to claim 2, characterized in that: The radius of gear one is greater than that of the ring gear, the radius of gear three is greater than that of gear two, and the radius of gear three is greater than that of gear four.

4. The motor end stator winding wire cutter according to claim 1, characterized in that: The outer periphery of the fixing plate is connected to a plurality of mounting plates arranged in a circumferential array, and radial long slot holes are provided on the mounting plates, and screws are placed in the long slot holes.

5. The motor end stator winding wire cutter according to claim 4, characterized in that: The bottom surface of the mounting plate is radially slidably connected to a slider, the slider has a vertical through hole, the through hole is aligned with the long slot hole, the screw passes through the through hole, the bottom surface of the fixed plate is rotatably connected to a swivel, a pull rod is connected between the swivel and each slider, the pull rod, the swivel and the slider are all hinged on a vertical axis.

6. The electric motor end stator winding wire cutter according to claim 5, characterized in that: The hinge point between the pull rod and the slider is located at a corner of the slider close to the adjacent slider in the counterclockwise direction.

7. The electric motor end stator winding wire cutter according to claim 1, characterized in that: The driving mechanism is a motor, which is installed on the top surface of the fixed plate through a reduction box, and the motor is connected to the rotating shaft through the reduction box.

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