Method and device for detecting screw assembly position of printed circuit board
A technology of printed circuit board and assembly position, which is applied in the field of electricity, can solve the problems of inaccurate screw assembly and low operation efficiency, and achieve the effect of improving the efficiency of screw installation and the method is simple and reliable
Active Publication Date: 2015-10-28
YANFENG VISTEON AUTOMOTIVE ELECTRONICS
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Problems solved by technology
[0003] The object of the present invention is to provide a method for detecting the screw assembly position of a printed circuit board. The method for detecting the screw assembly position of a printed circuit board needs to solve the inaccurate and low operating efficiency of the prior art to judge the screw assembly in place. question
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Embodiment 1
[0014] Such as figure 1 As shown, in the method for detecting the screw assembly position of a printed circuit board of the present invention, an annular bare copper layer 5 is arranged around the entrance of the screw mounting hole of the printed circuit board 1, and the inner diameter of the annular bare copper layer 5 is larger than that of the screw. The diameter of the entrance of the installation hole, a detection circuit is set between the screw gun and the annular bare copper layer 5, the detection circuit includes a power supply and a prompting device, the screw 4 is made of conductive material, and the screw gun 2 is used to drive the screw 4 to enter Screw installation hole, when the step at the end of the screw 4 is in contact with the annular bare copper layer 5, connect the detection circuit between the screw gun 2 and the test point, and use the prompt device in the detection circuit to give a signal that the screw 4 is assembled in place .
[0015] Further, a ...
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The invention provides a method for detecting an assembling position of a screw of a printed circuit board. According to the method, an annular bare copper layer is arranged around an inlet of a screw mounting hole of the printed circuit board, wherein the inside diameter of the annular bare copper layer is more than the diameter of the inlet of the screw mounting hole; a detecting loop is arranged between a screw gun and the annular bare copper layer; the detecting loop comprises a power supply and a prompting device; the screw is made of conductive material, and is driven to be screwed into the screw mounting hole through the screw gun; once a step at the tail end of the screw is contacted with the annular bare copper layer, the detecting loop between the screw gun and a testing point is connected, and the prompting device in the detecting circuit provides a signal representing that screw is assembled in place. A device for detecting the assembling position of the screw of the printed circuit board comprises the screw gun, a probe and a detecting circuit, wherein a screw driving head is arranged in the screw gun, and is connected with the detecting circuit through a conductor; and the probe is connected with the detecting circuit through a lead. The method provided by the invention is simple and reliable; and through the device provided by the invention, the screw mounting rate of the printed circuit board can be improved.
Description
technical field [0001] The invention relates to the electrical field, in particular to the assembly technology of a printed circuit board, in particular to a method and a device for detecting the screw assembly position of a printed circuit board. Background technique [0002] The printed circuit board needs to be fixed with screws when installing. Each screw must be assembled in a proper position to achieve a reasonable installation of the printed circuit board. In the prior art, detecting screw assembly positions mainly relies on torque control of an electric screwdriver or operator's visual inspection. During the assembly process, it often happens that the axial direction of the screw is inconsistent with the axial direction of the reserved mounting hole of the printed circuit board. The screw is not assembled in place, and the torque control of the electric screwdriver still obtains the signal that the torque is in place. In addition, the operator's visual inspection is...
Claims
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IPC IPC(8): G01B7/00B23P19/06
Inventor 赵永军顾剑锋
Owner YANFENG VISTEON AUTOMOTIVE ELECTRONICS