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Fiber grating sensor insert for injection molding product detection and manufacturing method thereof

A technology for fiber grating and injection molded products, which is applied in the transmission of sensing components, instruments, measuring devices and other directions using optical devices, which can solve problems such as damage and difficulty in sensor positioning, and achieve the goal of reducing installation costs, improving survival rate and operability. Effect

Active Publication Date: 2016-03-02
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Optical fiber can be used for on-line detection of temperature and strain after engraving grating. However, optical fiber is soft and vulnerable to high temperature and high pressure environment during product injection molding. In addition, the melt injected during injection molding has certain fluidity and will wash away the sensor. , making it difficult to locate the sensor in the product, therefore, it is a technical challenge to implant a fiber grating sensor in an injection molded product

Method used

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  • Fiber grating sensor insert for injection molding product detection and manufacturing method thereof
  • Fiber grating sensor insert for injection molding product detection and manufacturing method thereof
  • Fiber grating sensor insert for injection molding product detection and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Grating sensor insert for injection molding diaphragm filter press filter plate

[0067] Such as figure 1 As shown, the insert is composed of a temperature measurement fiber grating and a strain measurement fiber grating, each fiber is engraved with 3 grating units, and the center wavelengths of the grating units are 1512nm, 1516nm, 1520nm, respectively. The material of the optical fiber protective layer and grating encapsulator is the same as that of the filter plate of the filter press, which is polypropylene. The polypropylene thickness of the grating protective layer is 1mm, each grating pair has 3 grating encapsulators, and a hard and heat-resistant optical fiber quick connector is installed at the front end of each fiber grating sensor. The connector includes a built-in connector and an external plug.

[0068] The specific manufacturing method of a grating sensor insert for the filter plate of a diaphragm filter press with an injection molding process is as follows:

[...

Embodiment 2

[0074] A grating sensor insert for strain measurement of ABS injection beam structure

[0075] Such as image 3 As shown, the insert is composed of only one strain measurement fiber grating, and each fiber is engraved with two grating units. The center wavelengths of the grating units are 1532nm and 1540nm respectively. The material of the optical fiber protective layer and the grating encapsulator is the same as that of the beam structure, which is ABS resin. The thickness of the grating protective layer ABS resin is 0.8mm, and each fiber pair has 2 grating encapsulators. Such as Figure 4 As shown, the positioning frame of the packager is a four-wing bracket, the optical fiber grating passes through the center of the packager, and a hard and heat-resistant optical fiber quick connector is installed at the front end of each grating sensor. The connector includes an embedded connector and an external plug.

[0076] The specific manufacturing method of an ABS injection beam struct...

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Abstract

The invention discloses a fiber grating sensor insert for injection molding product detection and a manufacturing method thereof. The insert comprises a temperature fiber grating, a strain fiber grating, grating encapsulators, protection layers and connectors; the temperature fiber grating and the strain fiber grating are arranged side by side, the temperature fiber grating comprises a plurality of conducting fibers and a plurality of grating unit zones, the strain fiber grating comprises a plurality of conducting fibers and a plurality of grating unit zones, the conducting fibers and the grating unit zones are disposed at intervals, the grating encapsulators protecting the grating unit zones are disposed on the temperature fiber grating and the strain fiber grating, the protection layers wrap the conducting fibers, and ends of the temperature fiber grating and the strain fiber grating are provided with the connectors. The insert can be conveniently and reliably implanted in a product injection molding process, so a temperature sensor and a strain sensor are buried in a product, the sensors can be positioned, and the sensors can be guaranteed to be live in a high-temperature and high-voltage condition of injection molding; and the sensors are seamlessly embedded into the product, so measurement accuracy and the service lives of the sensor can be substantially improved.

Description

Technical field [0001] The invention relates to a fiber grating sensor insert for injection molding product detection and a manufacturing method thereof. Background technique [0002] The injection molding process is to inject molten plastic or plastic-based composite material into a mold under pressure, and obtain various products after cooling and molding. Injection molding, also known as injection molding, has the advantage of high production efficiency and can produce products of various shapes. The resulting product is often the final product, and no other processing is required before installation or use as the final product. Many details of the product, such as protrusions, ribs, and threads, can be formed in one step of injection molding. [0003] Industrial sensors are one of the key technical means to realize the intelligentization of the manufacturing industry. In modern industrial production, especially in the automated production process, various intelligent sensors ...

Claims

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Application Information

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IPC IPC(8): G01D5/353G01D21/02
CPCG01D5/353G01D21/02
Inventor 贾玉玺郭云力安立佳董琪叶慧高琳琳王庆林周勇
Owner SHANDONG UNIV
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