A production process of high-precision flexible circuit board for vcm voice coil motor
A technology of flexible circuit boards and voice coil motors, which is applied to the assembly of printed circuits with electrical components, printed circuits, and printed circuit manufacturing. It can solve the problems of uncontrollable component offset and mass production, and achieve a reasonable layout. , Facilitate mass production and compact process
Active Publication Date: 2020-04-28
KUNSHAN LONGPENG PRECISION ELECTRONICS
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Problems solved by technology
[0003] Flexible circuit board (FPC for short) is a printed circuit made of flexible insulating substrates. During the production process of FPC, the dimensional tolerances required by high-precision flexible circuit boards for VCM voice coil motors are beyond the industry's conventional tolerance range. The large window of the cover film can ensure the positional accuracy of the six PADs. However, due to the large window opening, the component deviation cannot be controlled within + / -0.045mm during SMT, resulting in the tolerance of this type of FPC exceeding the mass production. Therefore, it is necessary to find new processing methods
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[0020] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.
[0021] see Figure 1 to Figure 3 , the embodiment of the present invention includes:
[0022] A production process for a high-precision flexible circuit board for a VCM voice coil motor, the production process for a high-precision flexible circuit board for a VCM voice coil motor has the following steps:
[0023] Step 1: Cutting. The cutting machine cuts and processes the flexible copper foil base material FCCL to obtain the outer dimensions of the flexible circuit board, and heat-dries the workpiece obtained by cutting;
[0024] Step 2: Hole making, the drilling machine drills holes at the corresponding positions of the workpiece, and after drilling, i...
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The invention discloses a production process of a high-precision flexible circuit board for a VCM voice coil motor. The production process of the high-precision flexible circuit board for the VCM voice coil motor comprises the following steps: 1, cutting;2, drill holes; 3, press that dried film; 4, stick a covering film; 5, lase window opening; 6, remove glue residue; 7, precipitate nickel and gold; 8, strip, electrically measuring and punch; 9, mount detection; 10: FOC packaging shipment. As that method is adopt, the process of the invention is compact, the layout is reasonable, the positionaccuracy of six PADs can be ensured by the laser window, the offset dimension of the components is controlled at + / -0. 045mm during SMT process, and batch production is facilitated.
Description
technical field [0001] The invention relates to the technical field of flexible circuit boards, in particular to a production process for high-precision flexible circuit boards used in VCM voice coil motors. Background technique [0002] VCM (Voice Coil Motor), the voice coil motor in electronics, is a kind of motor. Its principle is exhausted from the speaker, and has the characteristics of high frequency response and high precision. Its principle is to change the inner coil of the motor in a permanent magnetic field. The magnitude of the direct current is used to control the stretching position of the spring leaf, thereby driving the up and down movement. [0003] Flexible circuit board (FPC for short) is a printed circuit made of flexible insulating substrates. During the production process of FPC, the dimensional tolerances required by high-precision flexible circuit boards for VCM voice coil motors are beyond the industry's conventional tolerance range. The large windo...
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IPC IPC(8): H05K3/34H05K3/00
CPCH05K3/0044H05K3/341
Inventor 曹明峰许春雷
Owner KUNSHAN LONGPENG PRECISION ELECTRONICS