Manufacturing method of soft magnetic material bias piece and anti-theft acoustic magnetic label using bias piece

A technology of soft magnetic material and manufacturing method, applied in the direction of magnetic material, inorganic material magnetism, inductor/transformer/magnet manufacturing, etc., can solve the problems of complicated structure and complicated process of anti-theft acousto-magnetic labels

Pending Publication Date: 2021-02-09
浙江南德精密合金有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the current bias sheet is made of semi-hard magnetic material, the process is relati

Method used

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  • Manufacturing method of soft magnetic material bias piece and anti-theft acoustic magnetic label using bias piece
  • Manufacturing method of soft magnetic material bias piece and anti-theft acoustic magnetic label using bias piece
  • Manufacturing method of soft magnetic material bias piece and anti-theft acoustic magnetic label using bias piece

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] see Figure 1-3 , a method for manufacturing a soft magnetic material bias sheet and an anti-theft acoustomagnetic label using the bias sheet, comprising a clamping and fixing shell 1 and a shell cover 6, a placement cavity 7 is opened on the surface of the clamping and fixing shell 1, and the placement cavity 7. Both sides of the interior are fixedly connected with a clamping and fixing device 2. The clamping and fixing device 2 includes a U-shaped bas...

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Abstract

The invention discloses a manufacturing method of a soft magnetic material bias piece and an anti-theft acoustic magnetic label using the bias piece. The anti-theft acoustic magnetic label comprises aclamping fixing shell and a shell cover; the surface of the clamping fixing shell is provided with a placing cavity; the two sides of the interior of the placing cavity are fixedly connected with clamping fixing devices; and resonance pieces are arranged in the clamping fixing devices. The resonance piece has a bending radian deviating from the bias piece in the vertical direction, the upper surface of the clamping fixing device is in lap joint with an isolation film, the bias piece is arranged on the upper surface of the isolation film, the resonance piece, the isolation film and the bias piece are all arranged in the placing cavity, and the clamping fixing shell is connected with the shell cover in a clamped mode. According to the manufacturing method of the soft magnetic material biaspiece and the anti-theft acoustic magnetic label using the bias piece, the processing technology is simple, materials are convenient to obtain, the anti-theft acoustic magnetic label is simple in structure, low in cost and convenient to process, and in addition, the resonance frequency of the soft magnetic material is stable, and demagnetization and decoding are easier.

Description

technical field [0001] The invention relates to the technical field of anti-theft systems, in particular to a method for manufacturing a bias sheet of soft magnetic material and an anti-theft acousto-magnetic label using the bias sheet. Background technique [0002] As one of the electronic commodity anti-theft systems, the acousto-magnetic anti-theft system is widely used for its superior performance. The acousto-magnetic anti-theft system belongs to the single-bit radio frequency identification system, and the modulation method adopted is the digital modulation method of amplitude keying (ASK). The antenna emits an alternating magnetic field, in which the modulation signal is a binary coded signal, consisting of a single-bit sequence of two states of 0 and 1, the pulse period is 20ms, and the required pulse amplitude is relatively large; the carrier signal is 58kHz (or 60kHz, 68kHz) low frequency A sine signal; a modulated signal is an ASK signal with an amplitude modulat...

Claims

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Application Information

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IPC IPC(8): H01F1/34H01F1/36H01F41/00G08B13/24
CPCG08B13/2422G08B13/2434H01F1/344H01F1/36H01F41/00
Inventor 李选明辅超超
Owner 浙江南德精密合金有限公司
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