阅读说明：本技术 一种手机无线充电器隔磁片的制造工艺 (manufacturing process of magnetic shielding sheet of wireless charger of mobile phone ) 是由 刘孝军 朱仁胜 朱国栋 朱国辉 于 2019-08-13 设计创作，主要内容包括：本发明公开了一种手机无线充电器隔磁片的制造工艺,属于家电元器件领域；制作工艺的步骤包括：(1)热处理、(2)破碎、(3)造粒、(4)热压、(5)烘烤、(6)粘贴保护层、(7)第二次热压；使用该工艺制作可以十分简单高效地生产手机无线充电器隔磁片,在节省了时间成本和金钱成本的同时,生产出的手机无线充电器隔磁片可以高效屏蔽电磁干扰,保证充电器的稳定运行。(the invention discloses a manufacturing process of a magnetic shielding sheet of a wireless charger of a mobile phone, belonging to the field of household appliance components; the manufacturing process comprises the following steps: (1) heat treatment, (2) crushing, (3) granulating, (4) hot pressing, (5) baking, (6) pasting a protective layer, and (7) second hot pressing; the process can be used for manufacturing the mobile phone wireless charger magnetic shielding sheet simply and efficiently, the time cost and the money cost are saved, and meanwhile, the manufactured mobile phone wireless charger magnetic shielding sheet can efficiently shield electromagnetic interference and ensure the stable operation of the charger.)

1. A manufacturing process of a magnetic shielding sheet of a wireless charger of a mobile phone is characterized by comprising the following steps:

(1): heat treating soft magnetic strip

(2): putting the soft magnetic strip subjected to the heat treatment in the step (1) into a crusher for crushing;

(3): adding a bonding agent into the powdery soft magnetic material obtained in the step (2), and mixing and granulating;

(4): hot-pressing the soft magnetic material particles in the step (3) onto a base material;

(5): baking the base material in the step (4);

(6): sticking a polymer protective layer on the substrate baked in the step (5);

(7): and (4) hot-pressing the polymer protective layer obtained in the step (6) to complete the manufacture of the magnetic shielding sheet.

2. The manufacturing process of the magnetic separator for the wireless charger of the mobile phone according to claim 1, wherein the temperature of the heat treatment in the step (1) is 225 ℃.

3. The manufacturing process of the magnetism isolating sheet for the wireless charger of the mobile phone according to claim 2, wherein the adhesive used in the step (3) is a carbon fiber environment-friendly adhesive.

4. The manufacturing process of the magnetism isolating sheet for the wireless charger of the mobile phone according to claim 3, wherein the granulation diameter of the step (2) is 0.5-1 mm.

5. The manufacturing process of the magnetism isolating sheet for the wireless charger of the mobile phone according to claim 4, wherein the polymer protective layer in the step (6) is a mixture of 2 parts by mass of polyethylene propylene polyester and 10-15 parts by mass of graphite.

Technical Field

The invention relates to the field of household appliance components, in particular to a manufacturing process of a magnetic separation sheet of a wireless charger of a mobile phone.

Background

an alternating electromagnetic field can be generated in the wireless charging process, when the alternating electromagnetic field meets metal, electronic eddy current can be generated, heat energy is generated on the metal, the transmission efficiency is low, electric energy is wasted, if a metal plate in a rechargeable battery is influenced by the magnetic field, the generated eddy current loss can cause the battery to be hot, explosion or fire is unsafe, and the magnetic field can interfere surrounding devices to influence the normal work of the whole charger. Therefore, in the technical aspect, the magnetic isolation sheet is required to be adopted to prevent the magnetic force lines from leaking, so as to ensure the safe and efficient work of the whole charging system, and the coils of the transmitting end and the receiving end are placed on the shield in practical application, so that the purposes of improving the efficiency and reducing the interference are achieved.

Disclosure of Invention

The invention aims to provide a manufacturing process of a mobile phone wireless charger magnetic-shielding sheet, which can be used for manufacturing the mobile phone wireless charger magnetic-shielding sheet simply, conveniently and efficiently.

In order to achieve the purpose, the invention adopts the technical scheme that: a manufacturing process of a magnetic shielding sheet of a wireless charger of a mobile phone is characterized by comprising the following steps:

(1): heat treating soft magnetic strip

(2): putting the soft magnetic strip subjected to the heat treatment in the step (1) into a crusher for crushing;

(3): adding a bonding agent into the powdery soft magnetic material obtained in the step (2), and mixing and granulating;

(4): hot-pressing the soft magnetic material particles in the step (3) onto a base material;

(5): baking the base material in the step (4);

(6): sticking a polymer protective layer on the substrate baked in the step (5);

(7): and (4) hot-pressing the polymer protective layer obtained in the step (6) to complete the manufacture of the magnetic shielding sheet.

Further, the temperature of the heat treatment in the step (1) is 225 ℃.

Further, the adhesive used in the step (3) is a carbon fiber environment-friendly adhesive.

Further, the diameter of the granules obtained in the step (2) is 0.5-1 mm.

Further, the polymer protective layer in the step (6) is a mixture of 2 parts by mass of polyethylene-polypropylene polyester and 10-15 parts by mass of graphite.

The method can be used for simply and efficiently producing the mobile phone wireless charger magnetic shielding sheet, and the produced mobile phone wireless charger magnetic shielding sheet can effectively shield electromagnetic interference while saving time cost and money cost, so that the stable operation of the charger is ensured.

Detailed Description

The present invention will be described in further detail with reference to specific examples.