CN114189116A

CN114189116A - Method for protecting hollow shaft of armature during insulation treatment

Info

Publication number: CN114189116A
Application number: CN202111381120.7A
Authority: CN
Inventors: 张世芬; 向红璇; 吴竣
Original assignee: Chongqing Huxi Electrical Industrial Co ltd
Current assignee: Chongqing Huxi Electrical Industrial Co ltd
Priority date: 2021-11-20
Filing date: 2021-11-20
Publication date: 2022-03-15

Abstract

The invention discloses a method for protecting an armature hollow shaft during insulation treatment, which comprises the following steps: 1) the armature of the motor is cleaned, and the two ends of the hollow shaft are respectively plugged by solid silica gel I and solid silica gel II. 2) And (3) placing the motor armature in an oven at 120 ℃, preheating for 3h, and removing water and volatile matters in the armature. 3) And (3) placing the motor armature in a vacuum paint dipping cylinder, and carrying out insulation treatment when the armature is cooled to 50-70 ℃. 4) And cleaning the armature assembling surface of the motor. 5) And (3) placing the motor armature in a drying oven at 120 ℃, heating to 140 +/-5 ℃ along with the oven, and preserving the temperature for more than 6 hours. 6) And pulling out the solid silica gel I and the solid silica gel II, and cleaning paint traces on the armature assembling surface of the motor. The invention adopts the silicon rubber plug to protect the bearing holes at the two ends of the hollow shaft of the armature, the silicon rubber plug is pulled out after dipping paint and cleaning, and then the silicon rubber plug is dried, thus being applicable to the matching part of the hollow shaft; meanwhile, the method is practical and convenient, and the problem that the hollow shaft of the armature is difficult to clean is solved.

Description

Method for protecting hollow shaft of armature during insulation treatment

Technical Field

The invention relates to a method for protecting an armature hollow shaft during insulation treatment.

Background

The insulation of the machine in the machine is used to isolate the conductive circuit, the most important part of which includes the insulation of the armature coil and the winding head, and the impregnation treatment with the insulating varnish is used, but the insulating varnish attached to the two ends of the armature shaft affects the subsequent assembly, so the insulating varnish at the two ends of the armature shaft needs to be cleaned.

The armature shaft of the motor is a solid shaft or a hollow shaft, and the armature is timely cleaned after being subjected to insulation treatment on the solid shaft, but for the hollow shaft, the insulating paint on the hollow shaft cannot be thoroughly cleaned by adopting a conventional cleaning mode due to the problems of small aperture, large depth, difficulty in cleaning and the like, so that the problems of deflection, damage and the like of the armature shaft during subsequent assembly are caused.

Disclosure of Invention

The invention aims to provide a method for protecting an armature hollow shaft during insulation treatment, so as to solve the problem that the armature hollow shaft is difficult to clean.

The technical scheme adopted for achieving the aim of the invention is that the method for protecting the hollow shaft of the armature during insulation treatment comprises the following steps:

1) protecting a hollow shaft in a motor armature: the armature of the motor is cleaned, and the two ends of the hollow shaft are respectively plugged by solid silica gel I and solid silica gel II.

2) Preheating: and (3) placing the motor armature in an oven at 120 ℃, preheating for 3h, and removing water and volatile matters in the armature.

3) Insulation treatment: and placing the motor armature in a vacuum paint dipping cylinder, and carrying out insulation treatment when the armature is cooled to 50-70 ℃.

4) Cleaning: and cleaning the armature assembling surface of the motor.

5) And (3) curing: and (3) placing the motor armature in a drying oven at 120 ℃, heating to 140 +/-5 ℃ along with the oven, and preserving the temperature for more than 6 hours.

6) Cleaning: and pulling out the solid silica gel I and the solid silica gel II, and cleaning up paint traces on the motor armature assembling surface.

Further, the motor armature includes a commutator, a hollow shaft, an inter-slot insulation, and a winding element.

Further, before the solid silica gel I and the solid silica gel II are installed in the step 1), a step of smearing silicone grease on the inner walls of the hollow shaft close to the two ends of the hollow shaft is also provided.

Further, solid silica gel I and solid silica gel II all are round platform form.

The technical effects of the invention are undoubted, the invention adopts the silicon rubber plug to protect the bearing holes at the two ends of the hollow shaft of the armature, the silicon rubber plug is pulled out after the dipping and cleaning, and then the drying is carried out, thus being applicable to the matching part of the hollow shaft; meanwhile, the method is practical and convenient, and the problem that the hollow shaft of the armature is difficult to clean is solved.

Drawings

FIG. 1 is a schematic view of a motor armature;

FIG. 2 is a schematic diagram of solid silica gel I;

FIG. 3 is a schematic view of solid silica gel II;

fig. 4 is a schematic diagram of solid silica gel I and solid silica gel II respectively plugging two ends of the hollow shaft.

In the figure: the device comprises a commutator 1, a hollow shaft 2, an inter-slot insulation 3, a winding element 4, solid silica gel I5 and solid silica gel II 6.

Detailed Description

The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.

Example 1:

the embodiment discloses a method for protecting an armature hollow shaft during insulation treatment, which comprises the following steps:

1) the hollow shaft 2 in the armature of the motor is protected: cleaning the armature of the motor, smearing silicone grease on the inner wall of the hollow shaft 2 close to the two ends thereof, referring to fig. 4, respectively blocking the two ends of the hollow shaft 2 by solid silicone I5 and solid silicone II 6. Referring to fig. 1, the motor armature comprises a commutator 1, a hollow shaft 2, inter-slot insulation 3 and a winding element 4. Referring to fig. 2 and 3, the solid silica gel I5 and the solid silica gel II 6 are both in a circular truncated cone shape.

4) Cleaning: and cleaning the armature assembling surface of the motor.

5) And (3) curing: and (3) placing the motor armature in a drying oven at 120 ℃, heating to 140 +/-5 ℃ along with the oven, preserving the temperature for more than 6 hours, and taking out the motor armature when a paint film is dry in a hot state and does not adhere.

6) Cleaning: and pulling out the solid silica gel I5 and the solid silica gel II 6, and cleaning paint traces on the armature assembling surface of the motor.

Example 2:

1) the hollow shaft 2 in the armature of the motor is protected: the armature of the motor is cleaned, see fig. 4, and the two ends of the hollow shaft 2 are respectively plugged by solid silica gel I5 and solid silica gel II 6.

4) Cleaning: and cleaning the armature assembling surface of the motor.

Example 3:

the main steps of this embodiment are the same as embodiment 2, and further, referring to fig. 1, the motor armature includes a commutator 1, a hollow shaft 2, an inter-slot insulation 3, and a winding element 4.

Example 4:

the main steps of the embodiment are the same as those of embodiment 2, and further, step 1) is to coat silicone grease on the inner wall of the hollow shaft 2 close to the two ends of the hollow shaft before the solid silica gel I5 and the solid silica gel II 6 are installed.

Example 5:

the main steps of this embodiment are the same as those of embodiment 2, and further, referring to fig. 2 and 3, the solid silica gel i 5 and the solid silica gel ii 6 are both in the shape of a circular truncated cone.

Claims

1. A method for protecting an armature hollow shaft during insulation treatment is characterized in that: the method comprises the following steps:

1) the hollow shaft (2) in the armature of the motor is protected: cleaning a motor armature, and respectively plugging two ends of a hollow shaft (2) by adopting solid silica gel I (5) and solid silica gel II (6);

2) preheating: placing the motor armature in an oven at 120 ℃, preheating for 3 hours, and removing water and volatile matters in the armature;

3) insulation treatment: placing the motor armature in a vacuum paint dipping cylinder, and carrying out insulation treatment when the armature is cooled to 50-70 ℃;

4) cleaning: cleaning the armature assembling surface of the motor:

5) and (3) curing: placing the motor armature in a drying oven at 120 ℃, heating to 140 +/-5 ℃ along with the oven, and keeping the temperature for more than 6 hours;

6) cleaning: and pulling out the solid silica gel I (5) and the solid silica gel II (6), and cleaning up paint traces on the motor armature assembling surface.

2. A method for protecting a hollow shaft of an armature during insulation processing according to claim 1, wherein: the motor armature comprises a commutator (1), a hollow shaft (2), an inter-slot insulation (3) and a winding element (4).

3. A method for protecting a hollow shaft of an armature during insulation processing according to claim 1, wherein: step 1) before the solid silica gel I (5) and the solid silica gel II (6) are installed, a step of smearing silicone grease on the inner walls of the hollow shaft (2) close to the two ends of the hollow shaft is also provided.

4. A method for protecting a hollow shaft of an armature during insulation processing according to claim 1, wherein: solid silica gel I (5) and solid silica gel II (6) all are round platform form.