PVC (polyvinyl chloride) antenna formed by IMD (in-mold decoration) injection molding

Abstract

The utility model discloses a PVC (polyvinyl chloride) antenna of IMD (in-mold decoration) injection molding, which comprises an NFC (near field communication) antenna and an injection molding part integrally formed with the NFC antenna, the NFC antenna comprises a PVC board and an enameled copper wire wound on the PVC board, and two ends of the enameled copper wire are respectively welded with two bonding pads of an external PCB (printed circuit board) or a mainboard. The antenna has the advantages that the PVC board bears the enameled copper wire, and the enameled copper wire is welded with the two bonding pads of the PCB to form a loop, so that the thickness of the whole PVC antenna subjected to injection molding in the IMD can be effectively reduced, and the product is made thinner; one side of the NFC antenna embedded with the enameled copper wire and the injection molding part are subjected to integral injection molding, and the enameled copper wire is coated by the injection molding part and the PVC plate after injection molding, so that the waterproof effect can be enhanced; and meanwhile, the injection molding part and the NFC antenna are integrally injection-molded, so that the NFC antenna and the injection molding part can be assembled more conveniently and quickly.

Description

Technical Field

[0001] The utility model relates to the field of communication equipment, in particular to an IMD in-mold injection-molded PVC antenna. Background Art

[0002] IMD molded PVC antennas are used for signal transmission of mobile payment devices. Existing IMD molded PVC antennas use FPC for signal transmission, which is expensive and leads to high costs. In addition, the thickness of FPC is large, so the thickness of the final antenna is large.

[0003] In view of this, it is necessary to provide an IMD molded PVC antenna. Utility Model Content

[0004] The utility model provides an IMD in-mold injection-molded PVC antenna, which effectively solves the problems of poor waterproofness and large overall thickness of the existing IMD in-mold injection-molded PVC antenna.

[0005] The technical solution adopted by the utility model is

[0006] An IMD in-mold injection-molded PVC antenna comprises an NFC antenna and an injection-molded part integrally formed with the NFC antenna and a PCB. The NFC antenna comprises a PVC board and an enameled copper wire wound on the PVC board, and two ends of the enameled copper wire are respectively welded to two pads of an external PCB or a mainboard.

[0007] Furthermore, the injection molded part includes a main body and a side integrally formed with the side of the main body, the main body is provided with a No. 1 groove for adapting to the PVC board, the No. 1 groove includes a No. 1 bottom wall and a No. 1 side wall, the No. 1 side wall is in contact with the end face of the PVC board, and the No. 1 side wall is in contact with the side of the PVC board.

[0008] Furthermore, the main body is provided with a plurality of screw holes and cylinders corresponding to the screw holes, and the cylinder protrudes from one side of the main body and the PVC antenna injection-molded by the IMD mold.

[0009] Furthermore, a rectangular groove and a rectangular through hole communicating with the rectangular groove are also provided on the back of the body, and the rectangular through hole is communicated with the bottom wall of the rectangular groove.

[0010] Furthermore, the PVC board is provided with a plurality of No. 1 holes, and the No. 1 holes penetrate the end surface of the PVC board.

[0011] Furthermore, the injection molded part is provided with a positioning column for positioning the external PCB.

[0012] The injection molding method of the PVC antenna of IMD in-mold injection molding is applied to the PVC antenna of IMD in-mold injection molding, S1, embedding wire: using an antenna implanter to embed the enameled copper wire into the PVC board; S2: printing ink: using a silk screen to print the ink on the enameled copper wire; S3, printing release film: covering the release film on the ink; S4, punching: punching the PVC board; S5, board gluing: gluing the PCB to the PVC board; S6, welding: using a fully automatic welding machine to weld the PCB and the enameled copper wire; S7, semi-inspection: using CCD to detect whether the welding between the PCB and the enameled copper wire is qualified; S8, punching: using a die-cutting machine to punch the PVC board; S9, electrical measurement: using an electrical measurement machine to test the withstand voltage value; S10, final inspection: checking whether there is residual glue on the surface of the PCB and whether the surface of the PCB is contaminated; S11, injection molding: placing the NFC antenna in the injection molding machine for injection molding.

[0013] The beneficial effects of the utility model are as follows: the PVC board carries the enameled copper wire, and a loop is formed by welding the enameled copper wire and two pads of the PCB, which can effectively reduce the thickness of the entire IMD in-mold injection-molded PVC antenna, making the product thinner; by integrally injecting one side of the NFC antenna in which the enameled copper wire is buried with the injection molded part, the enameled copper wire is covered by the injection molded part and the PVC board after injection molding, which can enhance the waterproof effect; at the same time, integrally injecting the injection molded part and the NFC antenna can make the assembly of the NFC antenna and the injection molded part more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 An exploded schematic diagram of an IMD molded PVC antenna provided in an embodiment of the present application.

[0015] Figure 2 This is a schematic diagram of the back side of the IMD molded PVC antenna provided in an embodiment of the present application.

[0016] The markings in the figure are: 1, external PCB; 2, injection molded part; 3, NFC antenna; 21, main body; 22, side; 201, groove No. 1; 202, rectangular groove; 203, rectangular through hole; 301, hole No. 1; 101, reference groove. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0018] like Figure 1As shown, an IMD in-mold injection-molded PVC antenna provided in an embodiment of the present application includes an NFC antenna 3 and an injection-molded part 2 integrally formed with the NFC antenna 3, wherein the NFC antenna 3 includes a PVC board and an enameled copper wire wound on the PVC board, and both ends of the enameled copper wire are respectively welded to two pads of an external PCB or a mainboard.

[0019] In the above design, the PVC board carries the enameled copper wire, and the enameled copper wire is welded to the two pads of the external PCB1 to form a loop, which can effectively reduce the thickness of the entire IMD in-mold injection-molded PVC antenna, making the product thinner by 0.3mm to 0.5mm; by integrally injecting one side of the NFC antenna 3 where the enameled copper wire is buried with the injection molded part 2, the enameled copper wire is covered by the injection molded part 2 and the PVC board after injection molding, which can enhance the waterproof effect; at the same time, integrally injecting the injection molded part 2 and the BFC antenna 3 can make the assembly of the NFC antenna 3 and the injection molded part 2 more convenient and quick.

[0020] Specifically: the injection molded part 2 includes a main body 21 and a side 22 integrally formed with the side of the main body 21. The main body 21 is provided with a No. 1 groove 201 for adapting to the PVC board. The No. 1 groove 201 includes a No. 1 bottom wall and a No. 1 side wall. The No. 1 side wall is in contact with the end face of the PVC board, and the No. 1 side wall is in contact with the side of the PVC board.

[0021] In the actual injection molding process, the injection molded part 2 is tightly attached to the side and end surfaces of the PVC board after molding, so that the PVC is fixed in the No. 1 groove 201 .

[0022] In the above design, the structural design of the injection molded part 2 can make the connection between the PVC board and the injection molded part 2 more secure after injection molding.

[0023] Specifically, the body 21 is provided with a plurality of screw holes and cylinders corresponding to the screw holes, and the cylinder protrudes from one side of the body 21 and the PVC antenna molded by IMD mold.

[0024] In actual use, the injection molded part 2 is fixed by the screw holes cooperating with the external studs, and the main body 21 is positioned with the external frame during installation by the cylinder.

[0025] In the above design, the structural design and specific implementation of the main body 21 can effectively realize the installation of the injection molded part 2.

[0026] Specifically: Figure 2 As shown, a rectangular groove 202 and a rectangular through hole 203 communicating with the rectangular groove 202 are further provided on the back of the body 21 , and the rectangular through hole 203 is communicated with the bottom wall of the rectangular groove 202 .

[0027] During actual use, the SIM card is placed in the rectangular groove 202 .

[0028] In the above design, the structural design of the main body 21 facilitates the installation of the SIM card.

[0029] Specifically, a plurality of No. 1 holes 301 are arranged on the PVC board, and the No. 1 holes 301 pass through the end surface of the PVC board.

[0030] During actual injection molding, the NFC antenna 3 is placed in the injection molding machine, and is inserted into the No. 1 hole 301 through the positioning column in the injection molding machine to achieve positioning of the PVC board.

[0031] In the above design, the structural design of the PVC plate can facilitate the positioning of the PVC plate during the injection molding process, thereby ensuring the injection molding accuracy of the PVC plate and the injection molded part 2 .

[0032] Specifically, the injection molded part 2 is provided with positioning posts for positioning the external PCB 1 .

[0033] It should be noted that a reference groove 101 for matching with the positioning column is provided on the external PCB 1 .

[0034] During the injection molding process of the NFC antenna 3 and the injection molded part 2 , the positioning post extends into the reference groove 101 , thereby further positioning the external PCB 1 .

[0035] In the above design, the structural design of the positioning column facilitates the positioning of the external PCB1.

[0036] To further explain in detail, it should be understood that the above is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An IMD molded PVC antenna, comprising an NFC antenna (3) and an injection molded part (2) integrally formed with the NFC antenna (3), characterized in that: The NFC antenna (3) comprises a PVC board and an enameled copper wire wound on the PVC board, and two ends of the enameled copper wire are respectively welded to two welding pads of an external PCB or a mainboard.

2. The IMD molded PVC antenna according to claim 1, characterized in that: The injection molded part (2) comprises a body (21) and a side edge (22) integrally formed with the side of the body (21); the body (21) is provided with a No. 1 groove (201) for matching with a PVC board; the No. 1 groove (201) comprises a No. 1 bottom wall and a No. 1 side wall; the No. 1 side wall is in contact with the end face of the PVC board; and the No. 1 side wall is in contact with the side face of the PVC board.

3. The IMD molded PVC antenna according to claim 2, characterized in that: The body (21) is provided with a plurality of screw holes and cylinders corresponding to the screw holes, and the cylinder protrudes from one side of the body (21) and the PVC antenna injection-molded in the IMD mold.

4. The IMD molded PVC antenna according to claim 3, characterized in that: The back side of the body (21) is also provided with a rectangular groove (202) and a rectangular through hole (203) in communication with the rectangular groove (202); the rectangular through hole (203) is in communication with the bottom wall of the rectangular groove (202).

5. The IMD molded PVC antenna according to claim 1, characterized in that: The PVC board is provided with a plurality of No. 1 holes (301), and the No. 1 holes (301) penetrate the end surface of the PVC board.

6. The IMD molded PVC antenna according to claim 1, characterized in that: The injection molded part (2) is provided with a positioning column for positioning the external PCB (1).

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