Depth detection device and detection method for antenna in dual-interface card

Abstract

The invention discloses a depth detecting device and method for an antenna in a double-interface card. The detecting device comprises a milling mechanism and a vertical movement mechanism, the milling mechanism comprises a milling cutter, a spindle and a milling motor, the milling cutter is formed by combining a left half cutter and a right half cuter, and the left half cutter and the right half cuter are insulated with each other and respectively connected with two poles of a detecting circuit. The vertical movement mechanism comprises a servo motor and a vertical transmission mechanism. The detecting method comprises the following steps that (1) the milling motor drives the spindle and the milling cutter fixed to the spindle to rotate, the vertical movement mechanism drives the milling mechanism to move downwards to drill a hole; (2) when the milling cutter is in contact with the antenna arranged in the double-interface card and mills an insulation layer off the antenna, the left half cutter is conductive with the right half cutter through the antenna, the two poles of the detecting circuit are conductive, and the position depth is recorded. The antenna depth of each double-interface card can be accurately detected through the depth detecting device and method, accurate data are provided for subsequent milling groove antenna poke processing, and the rejection rate is reduced.

Description

technical field [0001] The invention relates to a production method and equipment of a dual-interface card, in particular to a depth detection device and a detection method for an antenna in a dual-interface card. Background technique [0002] The dual-interface card is a smart card based on a single chip that integrates contact and non-contact interfaces. RF way to access the chip. The card body of the dual-interface card is provided with an antenna and a chip, wherein the antenna is clamped in the card body, the chip is embedded in the card body and the contacts are exposed, and the two ends of the antenna are connected to the chip; through the antenna and the card reader The induction realizes the non-contact card reading, and the contact card reading is realized through the contacts of the chip contacting the card reader. [0003] The main production process of the dual-interface card is as follows: first, the card body with the built-in antenna is made by lamination, ...

AI Technical Summary

Problems solved by technology

In the milling process of the above-mentioned production process, since the depths of the antennas in different dual-interface cards are not exactly the same, the depth of the milling slots must be well controlled. If it is too deep, the antenna will be milled off, and if it is too shallow, it will be difficult to pick up the antenna.

In the prior art, the dual-interface cards of the same batch are usually milled at a set depth. If you encounter a dual-interface card whose antenna depth is too deep or too shallow, it will cause waste products.

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