CN110768482A

CN110768482A - Motor iron core bonding type manufacturing method

Info

Publication number: CN110768482A
Application number: CN201910808917.7A
Authority: CN
Inventors: 李俊松; 王海洋
Original assignee: XIANGYANG HANGLI ELECTROMECHANICAL TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: XIANGYANG HANGLI ELECTROMECHANICAL TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-02-07

Abstract

The invention relates to a motor iron core bonding type manufacturing method for manufacturing stator and rotor iron cores of a generator and a motor. Comprises the technical processes of tabletting processing and pretreatment, process preparation, molding, curing and the like; the preparation stage of the process comprises the following steps: glue coating preparation, lamellar body retreatment and lamellar body antiseized processing, when the glue coating is prepared, the bonding glue coating is high strength adhesive, and the major ingredient ratio is: 20-25% of 604 type high-purity epoxy resin, 1-5% of dicyanodiamine, 0.2-0.6% of HT110 type curing accelerator and 75-80% of acetone, wherein the ingredients need to be accurately weighed, proportioned and uniformly mixed; when the sheet body is reprocessed, the formed sheet body is processed by gum dipping, airing and drying; when the antiseized processing of lamellar body, to the coating antiseized agent of stacked frock and preheat, antiseized agent is the antiseized agent of high temperature vacuum type insulating lipid. And in the forming and curing stage, stacking forming, secondary heating curing and demolding treatment are carried out on the formed sheet body. The method has the advantages of simplicity, environmental friendliness, good operation repeatability and wide application range.

Description

Motor iron core bonding type manufacturing method

Technical Field

The invention relates to a manufacturing technology of a stator and rotor core of a generator and a motor, in particular to a bonding type manufacturing method of a motor core.

Background

In the prior art, most of iron cores of a generator, a motor stator and a rotor are formed by laminating silicon steel sheets or other magnetic conductive material sheets, and the fastening mode of the iron cores is generally welding, riveting and sheet self-buckling type fixed connection structures, which have the defects that firstly, in terms of the performance of the iron cores, the local contact connection force of the silicon steel sheets is not high, the silicon steel sheets outside the contact easily generate edge short circuit, and the silicon steel sheet iron core with the edge short circuit reduces the insulation performance and increases the loss of the iron cores; secondly, in terms of the technical process, the welding type fixed connection structure damages the magnetic characteristics of the silicon steel sheet and causes local environmental pollution; thirdly, in terms of application range, the welding and riveting type fixed connection structure is not suitable for processing the iron cores of many micro motors.

Disclosure of Invention

The invention aims to provide a motor iron core bonding type manufacturing method which can effectively reduce the electromagnetic loss of a motor iron core, reliably improve the comprehensive performance of motor operation and be widely applied to the iron core processing of various generators and motors including micro motors.

The technical scheme of the invention is as follows: designing a bonding type manufacturing method of a motor iron core, comprising the technical processes of sheet-making processing and pretreatment, technical preparation, molding, curing and the like of an iron chip body; and in the tabletting processing and pretreatment stage, acetone is used as a cleaning agent to clean and dry the formed sheet body. The preparation stage of the process comprises the following steps: glue coating preparation, lamellar body retreatment and lamellar body antiseized processing, when the glue coating is prepared, the bonding glue coating is high strength adhesive, and the major ingredient ratio is: 20-25% of 604 type high-purity epoxy resin, 1-5% of dicyanodiamine, 0.2-0.6% of HT110 type curing accelerator and 75-80% of acetone, wherein the ingredients need to be accurately weighed, proportioned and uniformly mixed; when the sheet body is reprocessed, the formed sheet body is processed by gum dipping, airing and drying; when the antiseized processing of lamellar body, to the coating antiseized agent of stacked frock and preheat, antiseized agent is the antiseized agent of high temperature vacuum type insulating lipid. And in the forming and curing stage, stacking, bonding, positioning and forming, secondary heating curing and demolding treatment are carried out on the formed sheet bodies.

The beneficial technical effects of the invention are as follows: in the process of forming and curing the iron core, an adhesive fastening and positioning method of secondary curing after gum dipping is adopted, so that the electromagnetic loss of the iron core of the motor is effectively reduced, and the comprehensive performance of the motor in operation is improved. Meanwhile, the procedures of silicon steel sheet gum dipping, primary glue coating and curing, post-glue stacking and shaping, secondary heating and curing, iron core bonding and forming and the like are adopted, so that the processing process of the motor iron core is reliably simplified, and the negative influence of the production environment is reduced. In addition, the main materials of the adhesive coating are reasonable in proportion, and the auxiliary materials are proper in selection, so that the structural strength, the insulating property and the service life of the motor iron core are guaranteed. The invention also has the advantages of simple method, environmental protection, good operation repeatability and wide application range.

Detailed Description

The manufacturing method and process of the present invention are further illustrated by the following examples.

The method for manufacturing the motor iron core in the bonding mode comprises the following steps:

step one, in the flaking processing and pretreatment stage, acetone is used as a cleaning agent to clean and dry the formed sheet body. The method comprises the steps of blanking or cutting silicon steel sheets or other magnetic conductive material sheets into formed sheet bodies by a conventional motor iron core processing method, then putting the formed sheet bodies into a container filled with acetone for cleaning, wherein the amount of the acetone is not less than 25ml for every 50 sheets, and the acetone needs to be replaced when the acetone is obviously turbid; after cleaning, taking out the sheet body for drying until all acetone is volatilized.

Step two, the process preparation stage comprises: glue coating preparation, lamellar body retreatment and lamellar body antiseized processing, when the glue coating is prepared, the bonding glue coating is high strength adhesive, and the major ingredient ratio is: 20-25% of 604 type high-purity epoxy resin, 1-5% of dicyandiamide, 0.2-0.6% of HT110 type curing accelerator and 75-80% of acetone, wherein the ingredients need to be accurately weighed and proportioned according to the weight ratio, then the mixture is poured into a clean glass ware, the acetone is finally added, the other ingredients are not sequentially added, the mixture is uniformly mixed until no particle is precipitated, and the adhesive coating is milky white liquid. When the sheet body is reprocessed, the formed sheet body is treated by gum dipping, airing and drying. Gum dipping treatment: the formed sheet body made of silicon steel sheet or other magnetic conductive material sheet is processed by gumming in the prepared adhesive coating, the formed sheet body is put into an adhesive coating container, and the adhesive solution is stirred for 25s-35 s. Airing treatment: taking out the sheet material after the gum dipping treatment, hanging the sheet material separately, and airing the sheet material at normal temperature for 1 to 1.5 hours. Drying treatment: hanging the sheet materials into an oven, heating to 50-70 ℃, baking for 1-2h, ensuring that the sheet materials are separated from each other when placed, and avoiding bonding in the heating process. When the antiseized processing of lamellar body, to the coating antiseized agent of stacked frock and preheat, antiseized agent is the antiseized agent of high temperature vacuum type insulating lipid. Uniformly coating a layer of anti-sticking agent on the surface of the stacking tool, and then putting the stacking tool into a drying oven at the temperature of 150-165 ℃ for preheating for 1-2 hours.

And step three, in the forming and curing stage, stacking, bonding, positioning and forming, secondary heating and curing and demolding treatment are carried out on the formed sheet bodies. Stacking, bonding, positioning and molding the molded sheet bodies: taking out the stacked tooling subjected to anti-sticking treatment and preheating, assembling and forming, taking out the formed sheet body subjected to gluing from the oven, stacking the formed sheet body on the tooling according to the required size, locking the tooling and forming the iron core. And (3) secondary heating and curing: and (3) putting the iron core formed by stacking and the stacking tool into an oven, heating to 150-170 ℃, and curing for 4-8 hours. Demolding treatment: and taking out the solidified iron core and the tooling, cooling to room temperature, then disassembling the stacked tooling, and finishing the manufacturing of the motor iron core.

Claims

1. A motor iron core bonding type manufacturing method comprises the technical processes of sheet-making processing and pretreatment, technical preparation, molding, curing and the like of an iron chip body; the method is characterized in that: the preparation stage of the process comprises the following steps: glue spreading preparation, sheet reprocessing and sheet anti-sticking treatment; when the glue is prepared, the adhesive glue is a high-strength adhesive, and the main material proportion is as follows: 20-25% of 604 type high-purity epoxy resin, 1-5% of dicyanodiamine, 0.2-0.6% of HT110 type curing accelerator and 75-80% of acetone, wherein the ingredients need to be accurately weighed, proportioned and uniformly mixed; when the sheet body is reprocessed, the formed sheet body is processed by gum dipping, airing and drying; during anti-sticking treatment of the sheet bodies, coating an anti-sticking agent on the stacking tool and preheating the stacking tool, wherein the anti-sticking agent is a high-temperature vacuum insulating lipid anti-sticking agent; and in the forming and curing stage, stacking, bonding, positioning and forming and secondary heating and curing treatment are carried out on the formed sheet bodies.