TWI787633B - Carbon fiber tube hidden electronic label manufacturing method and carbon fiber tube products - Google Patents

Abstract

A method for manufacturing a hidden electronic label of a carbon fiber tube, comprising at least one central inner mold preparation procedure, a pressurized and heated mold preparation procedure, a carbon fiber prepreg covering procedure, an electronic label covering procedure, and a glass fiber covering procedure, A pressurized heating process and a surface treatment process; through the combination of multiple layers of carbon fiber prepreg and at least one glass fiber layer under pressure and heating, a carbon fiber electronic tag glass fiber blank is formed, and the surface is ground, polished and coated , finally forming a carbon fiber tube product; by the above method, under the premise of not destroying the body strength of the carbon fiber tube, the radio wave communication quality of the hidden electronic tag is still maintained, and the overall appearance is beautiful.

Description

Carbon fiber tube hidden electronic label manufacturing method and carbon fiber tube products

The invention relates to a carbon fiber control method, in particular to a carbon fiber tube concealed electronic tag manufacturing method which maintains the radio wave communication quality of the hidden electronic tag without destroying the strength of the carbon fiber tube.

Press, carbon fiber objects formed by carbon fiber composite materials have good mechanical properties such as light weight, strong rigidity, high temperature resistance, corrosion resistance, fatigue resistance, and crack resistance, and have been widely used in sports equipment, aerospace, medical appliances and other fields. Due to factors such as the high cost of carbon fiber composite materials, carbon fiber objects in various fields are generally regarded as expensive commodities. In order to introduce electronic management into the production and marketing channels of carbon fiber objects or to avoid forgery and theft, in recent years, carbon fiber objects are identified by electronic tags, which has become a trend in product development, and electronic tags are buried inside carbon fiber objects. The mainstream, such as Taiwan's No. I499534 "carbon fiber bicycle frame and bicycle" invention patent case, is to embed an electronic tag (RFID Tag) in the carbon fiber frame tube body, and use an electrically independent wire to pass through the tube body. The reader can prevent the carbon fiber tube body from affecting the communication quality of the electronic tag; however, the electrically independent wire passes from the inside of the tube body to the outside of the tube wall, resulting in a decrease in the strength of the tube body, which is not an ideal technical solution; No. M463874 "Carbon Fiber Device with Low-Frequency Radio-Frequency Identification Device" new patent case, in the process of forming carbon fiber objects, a radio frequency identification device (RFID) is installed between the first and second cladding layers composed of carbon fiber cloth Tag), and after the carbon fiber object is hot-pressed, the radio frequency identification device is clamped inside the carbon fiber object, which can be read by the reading device It is set to read the internal information of the radio frequency identification device from the outer surface of the carbon fiber object. Although this technical solution does not have the problem that the wire passes through the interior of the carbon fiber object and affects the strength of the tube body, there are only two antennas or antenna loops on the base material. The conventional radio frequency identification device (RFID Tag) structure in which the terminal point (pad) is welded to the radio frequency chip cannot avoid being squeezed by the cladding layer when the carbon fiber object is thermocompressed, and the antenna or antenna loop The two-terminal contacts (pads) are easily damaged, which affects the yield of the object. In addition, the material used in the carbon fiber object itself is conductive, which is easy to affect or interfere with the radio signal. The usual practice is to use radio frequency identification. The background value of the radio wave induction field effect at the location, adjust or design the adaptability of the antenna, but the adjustment is not easy and difficult, which affects the communication quality. Embedded inside the carbon fiber object, it will be difficult to use because of the change or difference of the background value of the electric wave induction field effect. Each carbon fiber object has its own dedicated radio frequency identification device. It causes a huge burden of manpower and financial resources. Even if the same RFID is used inside a predetermined carbon fiber object, there will often be too high frequency deviation due to the error of the embedding position, which will affect the reading effect.

That is to say, the main purpose of the present invention is to provide a method for manufacturing a hidden electronic label of a carbon fiber tube, which has at least one central internal mold preparation procedure, a pressurized and heated mold preparation procedure, a carbon fiber prepreg covering procedure, and a Electronic label covering procedure, a glass fiber covering procedure, a pressurized heating procedure and a surface treatment procedure;

The central inner mold preparation procedure is to manufacture a tubular central inner mold;

The pressure heating mold preparation procedure includes an upper mold and a lower mold, and the corresponding ends of the upper mold and the lower mold are respectively formed with an inner concave surface of the upper mold and an inner concave surface of the lower mold. surface, and the concave surface of the upper mold and the concave surface of the lower mold are combined to form a pressurized heating space; the carbon fiber prepreg covering process is to cover the outer surface of the central inner mold with multiple layers of carbon fiber prepreg ; The electronic label coating process is to coat at least one electronic label on the outer surface of the carbon fiber prepreg; the glass fiber coating process is to coat at least one glass fiber layer on the carbon fiber prepreg and the electronic label; The outer surface of the label forms a carbon fiber electronic label glass fiber product to be processed; the pressurized heating procedure is to place the carbon fiber electronic label glass fiber product to be processed between the upper mold and the lower mold under pressure Pressurized heating is carried out in the heating space, so that the multi-layer carbon fiber prepreg is combined with the glass fiber layer to form a carbon fiber electronic label glass fiber blank; the surface treatment process, the carbon fiber electronic label glass fiber rough After the pressure heating space exits, the surface of the carbon fiber electronic tag glass fiber blank is ground, polished and painted; by the above method, the electric wave of the hidden electronic tag is still maintained without destroying the strength of the carbon fiber tube. Communication quality, and has the benefit of an overall beautiful appearance.

The second object of the present invention is to provide a method for manufacturing a hidden electronic tag of a carbon fiber tube, wherein the thickness ratio of the carbon fiber prepreg to the glass fiber layer is 1:1; Equal proportions, so that the materials can be mixed evenly to achieve the best properties of the composite material.

Another object of the present invention is to provide a method of manufacturing a hidden electronic tag for carbon fiber tubes, wherein the central inner mold is made of EPD foam, silicone or polyurethane rubber; the above-mentioned EPD foam is used to ensure accurate pipe diameter The size and the inner layer are flat and wrinkle-free. Silicone or polyurethane rubber is used to avoid cracks at the junction of the pipe body.

Regarding the techniques, means and effects adopted in the present invention, preferred embodiments are given and described in detail in conjunction with the drawings. It is believed that the above-mentioned purpose, structure and characteristics of the present invention should be able to gain a deep and specific understanding therefrom.

1: Central internal mold preparation procedure

11: Center inner mold

2: Pressurized heating mold preparation procedure

21: upper mold

211: Concave surface of the upper mold

22: Lower mold

221: The inner concave surface of the lower mold

23: Pressurized heating space

3: Carbon fiber prepreg covering procedure

31: Carbon fiber prepreg

4: Electronic label covering procedure

41: Electronic label

411: copper antenna layer

412:PI

413: chip

414: Underfill

415: Adhesive

416: Absorbing material

417: Adhesive

418: release paper

421: chip

422: IC base

423: Surface antenna covering material

424: copper antenna layer

425: thin FR4 board

426: Adhesive

427: release paper

5: Fiberglass cladding procedure

51: Glass fiber layer

52: carbon fiber electronic label glass fiber to be processed

6: Pressurization and heating program

62: Carbon fiber electronic label glass fiber rough embryo

7: Surface treatment procedure

8: Carbon fiber tube products

Fig. 1 is the program flowchart of the application method of the present invention.

Fig. 2A is the implementation sectional view of the central internal mold preparation procedure of the present invention.

Fig. 2B is an implementation sectional view of the pressurized and heated mold preparation procedure of the present invention.

Fig. 2C is an implementation sectional view of the carbon fiber prepreg covering and electronic label covering procedures of the present invention.

Fig. 2D is an implementation sectional view of the glass fiber coating process of the present invention.

Fig. 2E is an implementation sectional view of the pressurization and heating procedure of the present invention.

Figure 3A is a schematic diagram of the appearance of carbon fiber prepreg without electronic tags and glass fibers.

Figure 3B is a schematic diagram of the appearance of carbon fiber prepreg with electronic tags and glass fibers attached.

Fig. 4 is a cross-sectional view of the structure of the high-frequency electronic tag of the present invention.

Fig. 5A is the appearance diagram of the first implementation of the high-frequency electronic tag of the present invention.

Fig. 5B is the appearance diagram of the second implementation of the high-frequency electronic tag of the present invention.

Fig. 6 is a frequency scanning diagram of the sensitivity of the high frequency (HF) electronic tag of the present invention.

Fig. 7 is a cross-sectional view of the structure of the ultra-high frequency (HF) electronic tag of the present invention.

Fig. 8 is an appearance diagram of the implementation of the ultra-high frequency (UHF) electronic tag of the present invention.

Fig. 9 is a frequency scanning diagram of the sensitivity of the ultra-high frequency (UHF) electronic tag of the present invention.

Fig. 10 is the experimental data diagram before the 0.5mm glass fiber layer coating of the present invention.

Fig. 11 is the experimental data diagram after coating with 0.5mm glass fiber layer of the present invention.

Fig. 12 is the experimental data diagram before the 0.4mm glass fiber layer coating of the present invention.

Fig. 13 is the experimental data diagram after the 0.4mm glass fiber layer of the present invention is covered.

Please refer to Fig. 1, the present invention provides a method for manufacturing a hidden electronic label 41 of a carbon fiber tube, which has at least one central internal mold preparation procedure 1, a pressurized and heated mold preparation procedure 2, and a carbon fiber prepreg cloth covering Procedure 3, an electronic label covering procedure 4, a glass fiber covering procedure 5, a pressurized heating procedure 6 and a surface treatment procedure 7;

The central inner mold preparation procedure 1 is to produce a tubular central inner mold 11 (as shown in Figure 2A);

The pressure heating mold preparation procedure 2 includes an upper mold 21 and a lower mold 22, the corresponding ends of the upper mold 21 and the lower mold 22 are respectively formed with an upper mold inner concave surface 211 and a lower mold inner concave surface 221, and the The inner concave surface 211 of the upper mold is combined with the inner concave surface 221 of the lower mold to form a pressurized heating space 23 (as shown in Figure 2B);

The carbon fiber prepreg covering procedure 3 is to attach or wrap multiple layers of carbon fiber prepreg 31 on the outer surface of the central inner mold 11 (as shown in Figures 2C and 3A);

The electronic label covering procedure 4 is to attach at least one electronic label 41 on the outer surface of the carbon fiber prepreg 31 (as shown in Figure 2C, 3B);

The glass fiber covering procedure 5 is to attach or wrap at least one glass fiber layer 51 on the outer surface of the carbon fiber prepreg 31 and the electronic label 41 to form a carbon fiber electronic label glass fiber product 52 to be processed (as shown in FIG. 2D, 3B);

The pressurized heating procedure 6 is to place the carbon fiber electronic tag glass fiber to be processed 52 in the pressurized heated space 23 between the upper mold 21 and the lower mold 22 Carry out pressurization and heating, make this multilayer carbon fiber prepreg cloth 31 and this glass fiber layer 51 combine, form a carbon fiber electronic tag glass fiber blank 62 (as shown in Figure 2E);

In the surface treatment procedure 7, after the carbon fiber electronic tag glass fiber blank 62 exits from the pressurized heating space 23, the surface of the carbon fiber electronic label glass fiber blank 62 is polished, polished and painted;

By the above method, without destroying the strength of the carbon fiber tube, the radio wave communication quality of the hidden electronic tag 41 is still maintained, and the overall appearance is beautiful.

Preferably, please refer to Fig. 2D and Fig. 3B, wherein, the thickness ratio of the carbon fiber prepreg 31 and the glass fiber layer 51 is 1:1; through the equal ratio of the carbon fiber material and the glass fiber material, so that The material can be mixed homogeneously to achieve the best properties of the composite material.

More preferably, as shown in Fig. 2A, the central inner mold 11 is made of EPD foam, silicone or polyurethane rubber; Likon or polyurethane rubber is used to avoid cracks at the junction of the pipe body.

Furthermore, when the carbon fiber prepreg 31 is cured at high temperature, the carbon on the surface of the carbon fiber will cause IC short circuit (carbon will conduct electricity or conduction). If the RFID tag is designed, the bottom of the electronic tag 41 has not been specially treated. There is no signal; in order to improve this known shortcoming, the high frequency (HF) electronic tag 41 implemented in the present invention (as shown in Figure 4) is to coat two copper antenna layers 411 (Cu) with a PI 412 (Polyimide, which is a class of acyl The polymer of imine repeating unit has the advantages of wide application temperature, chemical corrosion resistance, high strength, etc.), the bottom of the copper antenna layer (Cu) is provided with a chip 413 (IC) and coated with a layer of underfill 414 ( Under-fill), the bottom of the underfill 414 is sequentially provided with a back glue 415 (3M467), a wave-absorbing material 416, a back glue 417 (3M467) and a release paper 418, The overall thickness is 0.7mm±0.05mm, so that it can be combined into the high frequency (HF) electronic tag 41 of the present invention (as shown in the appearance diagrams of Figures 5A and 5B), where Figure 6 is the high frequency (HF) electronic tag 41 sensitivity sweep plot with excellent high frequency (HF) sensitivity.

Then, when the carbon fiber prepreg 31 is cured at high temperature, the carbon on the surface of the carbon fiber will cause IC short circuit (carbon will conduct electricity or conduction). If the RFID tag is designed, the bottom of the electronic tag 41 has not been specially treated. Signal, in order to improve this conventional shortcoming, the ultra-high frequency (UHF) electronic tag 41 (as shown in Fig. 7) of the present invention implements a chip 421 (IC) on an IC base 422 (COB: Chip On Board) Above, the IC base 422 is set on a surface antenna covering material 423, and a copper antenna layer 424 (Cu) and a thin FR4 board 425 (PCB board) are sequentially arranged in the surface antenna covering material 423. The bottom of the antenna cover material 423 is provided with a back glue 426 (3M467) and a release paper 427 in sequence, so that it can be combined into the electronic tag 41 of the ultra-high frequency (UHF) of the present invention (as shown in the appearance diagram of FIG. 8 ), wherein Fig. 9 is a sensitivity sweep diagram of the UHF electronic tag 41, which has excellent UHF sensitivity; as mentioned above, the UHF electronic tag 41 can make production history, Automated production and collection of related data are more efficient.

Finally, Fig. 10 is a data map of the glass fiber layer 5 of 0.5 mm not covering the electronic tag 41, and Fig. 11 is a data map of the glass fiber layer 5 of 0.5 mm covering the electronic tag 41, wherein the electronic tag 41 ( As shown in Figure 5B and Figure 8), there is no abnormality/reading is normal, and the center frequency of the sweep is 920~930MHz, which is no different from that before uncoated; Figure 12 is a 0.4mm glass fiber layer 5 uncoated electronic label The data diagram of 41, Figure 13 is the data diagram of the 0.4mm glass fiber layer 5 coated electronic tag 41, wherein the electronic tag 41 after the coating (as shown in Figure 5B and Figure 8) has no abnormality/reading is normal, and the frequency is scanned The center frequency is 920~930MHz, which is no different from that before uncoated; from the above It is proved that a carbon fiber tube product 8 (as shown in FIG. 1 ) produced by the method of the present invention has good radio wave communication quality.

Based on the description of the above-mentioned embodiments, it is possible to fully understand the operation of the present invention, use and the effect that the present invention produces, but the above-mentioned embodiments are only preferred embodiments of the present invention, and should not be used to limit the implementation of the present invention. The scope, that is, the simple equivalent changes and modifications made according to the patent scope of the present invention and the content of the description of the invention, all fall within the scope of the present invention.

1: Central internal mold preparation procedure

2: Pressurized heating mold preparation procedure

3: Carbon fiber prepreg covering procedure

4: Electronic label covering procedure

5: Fiberglass cladding procedure

6: Pressurization and heating program

7: Surface treatment procedure

8: Carbon fiber tube products

Claims (4)

A method for manufacturing a hidden electronic label of a carbon fiber tube, comprising at least one central inner mold preparation procedure, a pressurized and heated mold preparation procedure, a carbon fiber prepreg covering procedure, an electronic label covering procedure, and a glass fiber covering procedure , a pressurization and heating procedure and a surface treatment procedure; the central inner mold preparation procedure is to produce a tubular central inner mold; the pressurization and heating mold preparation procedure includes an upper mold and a lower mold, the upper mold and the lower mold The corresponding ends of the lower mold are respectively formed with an inner concave surface of the upper mold and an inner concave surface of the lower mold, and the inner concave surface of the upper mold and the inner concave surface of the lower mold are combined to form a pressurized heating space; the carbon fiber prepreg covering process , covering multiple layers of carbon fiber prepreg on the outer surface of the central inner mold; the electronic label covering procedure is covering at least one electronic label on the outer surface of the carbon fiber prepreg; the glass fiber covering procedure, Covering at least one glass fiber layer on the carbon fiber prepreg and the outer surface of the electronic label to form a carbon fiber electronic label glass fiber product to be processed; the pressurization and heating process is to process the carbon fiber electronic label glass fiber The product is placed in the pressurized heating space between the upper mold and the lower mold for pressurized heating, so that the multi-layer carbon fiber prepreg is combined with the glass fiber layer to form a carbon fiber electronic label glass fiber blank ; the surface treatment procedure, after the carbon fiber electronic tag glass fiber blank is exited from the pressurized heating space, the surface of the carbon fiber electronic label glass fiber rough blank is ground, polished and painted. According to the carbon fiber tube hidden electronic label manufacturing method described in item 1 of the scope of the patent application, the ratio of the thickness of the carbon fiber prepreg to the thickness of the glass fiber layer is 1:1. According to the carbon fiber tube hidden electronic label manufacturing method described in item 1 of the scope of the patent application, the central inner mold is made of EPD foam material, silicone or polyurethane rubber material. A carbon fiber tube product is produced according to the hidden electronic tag manufacturing method for carbon fiber tubes described in any one of the first to third items of the scope of the patent application.

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