Method and device for detecting nuts in trunk cover plate production

A technology for detecting devices and nuts, which is applied in the direction of optical device exploration, etc., can solve the problems of large quantity, small size of nuts, and difficult detection, etc., and achieve the effects of stable light source, easy handling, and reliable detection effect

Inactive Publication Date: 2015-02-25
YANTAI ZHENGHAI HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a detection method and device for detecting whether the nuts on the substrate are missing during the production process of the trunk cover, to solve the detection difficulties caused by the small size of the nuts, the large number, and the close proximity to each other. Accurate detection of nuts at a lower cost

Method used

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  • Method and device for detecting nuts in trunk cover plate production
  • Method and device for detecting nuts in trunk cover plate production

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 As shown, the base plate 11 is provided with a nut installation position 12 on which a nut 13 needs to be installed.

[0041] The opposite position of the substrate is provided with a probe fixing plate 8, on which the input end 21 of the first optical fiber 2 is arranged, aligned with the nut installation position 12, and the reflected light is transmitted to the photoelectric conversion element 3 corresponding to the output end 22, and converted into The electrical signal is sent to the judging unit 4 for judging.

[0042] When the nut 13 is not installed, the nut installation position 12 corresponding to the input end 21 is a composite material, the reflection intensity is low, and the electric signal is weak; after the nut 13 is installed, the nut 13 corresponding to the input end 21 is a metal material, so the reflection intensity Higher, stronger electrical signal.

[0043] In the two cases, the electrical signal will be significantly different,...

Embodiment 2

[0048] See attached figure 2 , on the basis of Embodiment 1, the second optical fiber 6 and the auxiliary light source 7 are set.

[0049] The first optical fiber 2, the photoelectric conversion element 3, and the judging unit 4 are set to be the same as in Embodiment 1, and the nut installed indicating device 51 and the nut missing indicating device 52 shown in the figure may also be provided, the difference being that the probe fixing plate The output end 62 of the second optical fiber 6 is also arranged above the nut installation position 12 on 8 , and the input end 61 is facing the auxiliary light source 7 .

[0050] The auxiliary light source 7 can correspond to a plurality of nut installation positions 12 through the second optical fiber 6, and can also be provided with a plurality of auxiliary light sources 7, and each auxiliary light source corresponds to a nut installation position 12

[0051] The light emitted by the auxiliary light source 7 is irradiated on the nu...

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Abstract

The invention relates to a method and device for detecting whether nuts mounted on a base plate are missed in trunk cover plate production. Light-guide fibers are used for transmitting reflected light on the nuts to photoelectric converting elements which convert the reflected light to electric signals, then the electric signals are sent to judging units, the strength of the reflected light is judged according to the strength of the electric signals, and therefore whether the nuts are missed can be known. The method and device solve the problem the detection is difficult due to the facts that the nuts are large in number and small in size, and the distances between the nuts are small, and the missing mounting detection problem is solved through the economical method.

Description

technical field [0001] The invention relates to a nut detection method and device, in particular to a detection method and device for whether nuts on a substrate are missing. Background technique [0002] The trunk cover is an automotive interior part, which is composed of a main body and accessories; the main body includes a base plate and the surface material covering the front and edge of the base plate, and the accessories include drawstrings, hooks, rotating shafts, etc. installed on the main body. [0003] The substrate and surface material on the main body are combined with glue. In order to assemble accessories such as shafts, drawstrings, and hooks on the back, nuts need to be pre-installed on the front of the substrate before compounding the surface material. In some models, for the convenience of use, the trunk cover is designed as a structure that can be folded in multiple sections, so it is necessary to install more nuts on the front to install the connecting pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V8/16G01V8/24
Inventor 赵建勇单汝坤杨林宪李光福于艳芳
Owner YANTAI ZHENGHAI HIGH TECH
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