CN-224208950-U - Permanent magnet motor rotor punching die

CN224208950UCN 224208950 UCN224208950 UCN 224208950UCN-224208950-U

Abstract

The utility model discloses a permanent magnet motor rotor punching die which comprises a lower die holder, wherein an upper die holder is arranged above the lower die holder, the bottom surface of the upper die holder is fixedly connected with a guide post, the upper surface of the lower die holder is fixedly connected with a sleeve, a moving plate is arranged in the sleeve, the bottom surface of the moving plate is fixedly connected with an elastic piece, an oil storage cavity is arranged in the sleeve, a communication hole is formed in the inner wall of the sleeve, an air pressure balance hole is formed in the outer side of the lower die holder, the outer side of the lower die holder is fixedly connected with a material injection hole, the upper die holder is fixedly connected with an oil injection plate, and the bottom surface of the upper die holder is fixedly connected with one end of a fixing frame. According to the utility model, the guide column is buffered through the movable plate and the elastic piece, so that the die damage caused by overlarge impact force of the upper die is avoided, when the movable plate drives the air pushing piston to move upwards, lubricating oil can be sprayed out of the discharge hole to lubricate, the self-lubricating effect of the guide column is realized, the oil is uniformly coated on the surface of the silicon steel sheet through the coating roller, and burrs generated by stamping are reduced.

Inventors

DING YONG
HUANG YIN
ZHOU FENG
WANG ZHONGMING
ZHOU YAMING
CHEN BIN
XIAO ZHENG

Assignees

江苏大中电机股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250604

Claims (6)

1. A permanent magnet motor rotor punching die comprises a lower die holder (1) and is characterized in that an upper die holder (2) is arranged above the lower die holder (1), the bottom surface of the upper die holder (2) is fixedly connected with a guide post (3), the upper surface of the lower die holder (1) is fixedly connected with a sleeve (4), a moving plate (5) is arranged inside the sleeve (4), the bottom surface of the moving plate (5) is fixedly connected with an elastic piece (6), an oil storage cavity (7) is arranged inside the sleeve (4), a communication hole (8) is formed in the inner wall of the sleeve (4), an air pressure balance hole (9) is formed in the outer side of the lower die holder (1), the outer side of the lower die holder (1) is fixedly connected with an injection hole (11), the upper die holder (2) is fixedly connected with an oil injection plate (12), the bottom surface of the upper die holder (2) is fixedly connected with one end of a fixing frame (13), the side surface of the fixing frame (13) is rotationally connected with a material conveying roller (14), limit rings (15) are arranged on two sides of the fixing frame (14), and the side surface of the fixing frame (13) is rotationally connected with a coating roller (16).
2. The permanent magnet motor rotor punching die as set forth in claim 1, wherein the upper surface of the lower die holder (1) is connected with the lower die (101), the bottom surface of the upper die holder (2) is fixedly connected with the upper die (201), the lower die (101) is matched with the upper die (201) in position, and the upper die holder (2) is in sliding fit with the sleeve (4) through the guide post (3).
3. The permanent magnet motor rotor punching die is characterized in that a circular through hole is formed in the center of the sleeve (4), the inside of the sleeve (4) is in sliding fit with the outer side of the moving plate (5), a buffer cavity is formed between the moving plate (5) and the sleeve (4), the elastic piece (6) is located in the buffer cavity, and the oil storage cavity (7) is communicated with the buffer cavity through the communication hole (8).
4. The permanent magnet motor rotor punching die as set forth in claim 3, wherein a piston (17) is arranged inside the sleeve (4), the sleeve (4) is in sliding fit with the outer side of the piston (17) through an oil storage cavity (7), the oil storage cavity (7) is communicated with the outer side through an air pressure balance hole (9), and the air pressure balance hole (9) and the material injection hole (11) are respectively located on the upper side and the lower side of the oil storage cavity (7).
5. The permanent magnet motor rotor punching die as set forth in claim 4, wherein the inner wall of the sleeve (4) is provided with a discharge hole (10), the discharge hole (10) is communicated with the inside of the oil storage cavity (7), and the communication hole (8) and the discharge hole (10) are respectively positioned at the top and the bottom of the oil storage cavity (7).
6. The permanent magnet motor rotor punching die as set forth in claim 1, wherein the bottom surface of the oil spraying plate (12) is fixedly connected with a plurality of spray heads, a material conveying roller (14) is arranged at the bottom of the oil spraying plate (12), and the material conveying roller (14) is abutted with a limiting ring (15).

Description

Permanent magnet motor rotor punching die Technical Field The utility model relates to the technical field of motor rotor dies, in particular to a permanent magnet motor rotor punching die. Background The permanent magnet motor is widely applied due to the performances of large torque, energy saving and the like. The permanent magnet motor rotor is formed by punching silicon steel sheets, and rotor punching sheets are usually composed of magnetic steel holes, magnetic leakage holes, lightening holes and shaft holes, so that the silicon steel sheets are required to be punched and formed by a die. Can guide post and sleeve play the cushioning effect when guaranteeing upper and lower mould compound die stability on the punching die, reduce the wearing and tearing to mould and punching press head, but the lubrication oil evaporation after the guide post long-time use, need the manual interpolation lubricating oil of staff, if add not in time cause the guide post wearing and tearing and take place the noise easily, influence compound die effect, because the hardness of silicon steel sheet is higher, violent so need paint lubricating oil in punching process with material friction be used for reducing the damage of punching press power reduction burr and hedging piece, however traditional paint lubricating oil efficiency is lower, the amount of labour is big. Disclosure of utility model The utility model aims to provide a permanent magnet motor rotor punching die for solving the problems in the background technology. In order to achieve the purpose, the technical scheme is that the permanent magnet motor rotor punching die comprises a lower die holder, an upper die holder is arranged above the lower die holder, the bottom surface of the upper die holder is fixedly connected with a guide post, the upper surface of the lower die holder is fixedly connected with a sleeve, a moving plate is arranged in the sleeve, the bottom surface of the moving plate is fixedly connected with an elastic piece, an oil storage cavity is arranged in the sleeve, a communication hole is formed in the inner wall of the sleeve, an air pressure balance hole is formed in the outer side of the lower die holder, the outer side of the lower die holder is fixedly connected with a material injection hole, the upper die holder is fixedly connected with an oil injection plate, the bottom surface of the upper die holder is fixedly connected with one end of a fixing frame, the side surface of the fixing frame is rotationally connected with a material conveying roller, limit rings are arranged on two sides of the material conveying roller, and the side surface of the fixing frame is rotationally connected with a coating roller. Preferably, the upper surface of the lower die holder is connected with the lower die, the bottom surface of the upper die holder is fixedly connected with the upper die, the lower die is matched with the upper die in position, and the upper die holder is in sliding fit with the sleeve through the guide post. Preferably, the circular through hole is offered at the sleeve center, the inside sliding fit in sleeve and the movable plate outside, form the cushion chamber between movable plate and the sleeve, the elastic component is located the cushion intracavity, the oil storage chamber passes through the intercommunicating pore and cushion chamber intercommunication. Preferably, the piston is arranged in the sleeve, the sleeve is in sliding fit with the outer side of the piston through the oil storage cavity, the oil storage cavity is communicated with the outer side through the air pressure balance hole, and the air pressure balance hole and the material injection port are respectively positioned on the upper side and the lower side of the oil storage cavity. Preferably, the discharging hole is formed in the inner wall of the sleeve, the discharging hole is communicated with the inside of the oil storage cavity, and the communicating hole and the discharging hole are respectively positioned at the top and the bottom of the oil storage cavity. Preferably, the bottom surface of the oil spraying plate is fixedly connected with a plurality of spray heads, a material conveying roller is arranged at the bottom of the oil spraying plate, and the material conveying roller is in butt joint with the limiting ring. Compared with the prior art, the utility model has the beneficial effects that: 1. According to the utility model, the sleeve is arranged at the bottom of the guide post, so that the die assembly of the lower die and the upper die is more accurate, the guide post is buffered by the moving plate and the elastic piece, the die damage caused by overlarge impact force of the upper die is avoided, and when the moving plate moves, air enters the bottom of the oil storage cavity through the communication hole, so that the piston is pushed to move upwards, lubricating oil in the oil storage cavity can be sprayed out from the discharge h