A flexible circuit board for a VCM motor and its manufacturing method

Abstract

The present invention discloses a flexible circuit board for a VCM motor and a processing method thereof, including a substrate. A left connector is fixedly connected to the left part of the rear end of the substrate, and a right connector is fixedly connected to the right part of the rear end of the substrate. A left conductor is fixedly connected to the rear end of the left connector, and a right conductor is fixedly connected to the rear end of the right connector. A left connection block is fixedly connected to the rear end of the left conductor, and a right connection block is fixedly connected to the rear end of the right conductor. In the present invention, an adhesive layer is sprayed on the substrate, and then a protective film, a lower protective film, a left protective film, and a right protective film are respectively adhered to the front side, the rear part, the left side, and the right side of the upper end of the substrate by using the adhesive layer, so that the protective film on the substrate is divided into four pieces. At the same time, a tearing head is provided on each of the four protective blocks, which can facilitate the peeling of the corresponding protective film and avoid peeling a whole protective film, resulting in damage to the surface of the flexible circuit board, thereby improving the service life of the flexible circuit board.

Description

Technical Field

[0001] The present invention belongs to the technical field of flexible circuit boards, and particularly relates to a flexible circuit board for a VCM motor and a processing method thereof. Background Art

[0002] A flexible circuit board is a highly reliable and extremely flexible printed circuit board made of polyimide or polyester film as the base material. It has the characteristics of high wiring density, light weight, thin thickness, and good bendability. Flexible circuit boards, also known as flexible printed circuit boards or FPCs, are favored for their excellent properties such as light weight, thin thickness, and the ability to be freely bent and folded. However, the quality inspection of domestic FPCs mainly relies on manual visual inspection, which is costly and inefficient. With the rapid development of the electronics industry, circuit board design is becoming more and more high-precision and high-density, and traditional manual inspection methods can no longer meet the production requirements. The automated inspection of FPC defects has become an inevitable trend in the industry development.

[0003] However, the existing flexible circuit boards still have the following deficiencies: 1. The protective films on the surfaces of the existing flexible circuit boards are directly laminated on the flexible circuit boards as a whole. This method is not convenient for the later peeling of the protective film, and the peeling of the whole piece is likely to cause damage to the surface of the flexible circuit board, affecting the service life of the flexible circuit board; 2. At present, only the substrate of the flexible circuit board is made of polyimide material, resulting in poor insulation performance of the flexible circuit board body, which is likely to affect the performance of electronic components. Therefore, we propose a flexible circuit board for a VCM motor and a processing method thereof. Summary of the Invention

[0004] The purpose of the present invention is to provide a flexible circuit board for a VCM motor and a processing method thereof to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0006] A flexible circuit board for a VCM motor includes a substrate. A left connector is fixedly connected to the left part of the rear end of the substrate, and a right connector is fixedly connected to the right part of the rear end of the substrate. A left conductor is fixedly connected to the rear end of the left connector, and a right conductor is fixedly connected to the rear end of the right connector. A left connection block is fixedly connected to the rear end of the left conductor, and a right connection block is fixedly connected to the rear end of the right conductor. Mounting holes penetrating up and down are formed in the upper ends of both the left connection block and the right connection block.

[0007] Preferably, an insulating film layer is fixedly connected to the lower end of the substrate, an adhesive layer is adhesively connected to the upper end of the substrate, an upper protective film, a lower protective film, a left protective film, and a right protective film are adhesively connected to the upper end of the adhesive layer, and tearing heads are fixedly connected to the inner sides of the upper protective film, the lower protective film, the left protective film, and the right protective film.

[0008] Preferably, the insulating film layer is made of polyimide film, and the upper protective film, lower protective film, left protective film and right protective film are all made of silica gel.

[0009] Preferably, the width and length of each of the four tearing heads are both 5 cm.

[0010] A processing method for a flexible circuit board of a VCM motor specifically includes the following manufacturing steps:

[0011] Step (1), film laminating: Place an insulating film layer below the processed substrate, and use a film laminating machine to laminate the insulating film layer on the substrate;

[0012] Step (2), drilling: Drill mounting holes in both the left connecting block and the right connecting block;

[0013] Step (3), electroplating: Electroplate the left connecting block and the right connecting block so that a copper film is coated on the inner walls of the mounting holes drilled in Step (2);

[0014] Step (4), spraying: Convey the flexible circuit board obtained in Step (3) to a spraying machine through a conveying device, and spray an adhesive layer on the flexible circuit board through the spraying machine;

[0015] Step (5), film pasting: Convey the flexible circuit board sprayed with the adhesive layer in Step (4) to a film pasting machine, and attach an upper protective film, a lower protective film, a left protective film and a right protective film on the flexible circuit board through the film pasting machine;

[0016] Step (6), inspection: Perform performance testing on the finished flexible circuit board.

[0017] The present invention has the following beneficial effects:

[0018] 1. By spraying an adhesive layer on the substrate and then using the adhesive layer to attach an upper protective film, a lower protective film, a left protective film and a right protective film on the front side, rear side, left side and right side of the upper end of the substrate respectively, the protective film on the substrate is divided into four pieces, and tearing heads are provided on all four protective pieces, which can facilitate the peeling of the corresponding protective film and avoid peeling a whole protective film, causing damage to the surface of the flexible circuit board, thereby improving the service life of the flexible circuit board;

[0019] 2. By providing an insulating film layer on the lower end surface of the substrate and setting the insulating film layer as a polyimide film, the insulating effect of the flexible circuit board can be improved, which is practical and effective.

[0020] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. Description of the Drawings

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of a flexible circuit board for a VCM motor of the present invention;

[0023] Figure 2 It is a flowchart of the operation module of a processing method for a flexible circuit board of a VCM motor of the present invention.

[0024] In the figure: 1. Substrate; 2. Left connector; 3. Right connector; 4. Left conductor; 5. Right conductor; 6. Left connection block; 7. Right connection block; 8. Mounting hole; 9. Insulating film layer; 10. Adhesive layer; 11. Upper protective film; 12. Lower protective film; 13. Left protective film; 14. Right protective film; 15. Tear handle. Detailed implementation manners

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] Please refer to Figure 1-2 As shown, a flexible circuit board for a VCM motor includes a substrate 1. A left connector 2 is fixedly connected to the left part of the rear end of the substrate 1, a right connector 3 is fixedly connected to the right part of the rear end of the substrate 1, a left conductor 4 is fixedly connected to the rear end of the left connector 2, a right conductor 5 is fixedly connected to the rear end of the right connector 3, a left connection block 6 is fixedly connected to the rear end of the left conductor 4, a right connection block 7 is fixedly connected to the rear end of the right conductor 5, and mounting holes 8 penetrating up and down are formed in the upper ends of both the left connection block 6 and the right connection block 7.

[0027] An insulating film layer 9 is fixedly connected to the lower end of the substrate 1, an adhesive layer 10 is adhesively connected to the upper end of the substrate 1, an upper protective film 11, a lower protective film 12, a left protective film 13 and a right protective film 14 are adhesively connected to the upper end of the adhesive layer 10. The upper protective film 11 is located at the rear side of the upper end of the substrate 1, the lower protective film 12 is located at the front side of the upper end of the substrate 1, the left protective film 13 is located at the left side of the upper end of the substrate 1, and the right protective film 14 is located at the right side of the upper end of the substrate 1. The inner sides of the upper protective film 11, the lower protective film 12, the left protective film 13 and the right protective film 14 are all fixedly connected with a tearing head 15. There is a gap between the four tearing heads 15 and the substrate 1, so as to facilitate the use of the tearing heads 15. The insulating film layer 9 is made of polyimide film, and the upper protective film 11, the lower protective film 12, the left protective film 13 and the right protective film 14 are all made of silica gel. The width and length of the four tearing heads 15 are both 5 cm.

[0028] A processing method for a flexible circuit board of a VCM motor specifically includes the following manufacturing steps:

[0029] Step (1), film laminating: Place an insulating film layer under the processed substrate, and use a film laminating machine to laminate the insulating film layer on the substrate;

[0030] Step (2), drilling: Drill mounting holes in both the left connecting block and the right connecting block;

[0031] Step (3), electroplating: Electroplate the left connecting block and the right connecting block so that a copper film is coated on the inner walls of the mounting holes drilled in step (2);

[0032] Step (4), spraying: Convey the flexible circuit board obtained in step (3) to a spraying machine through a conveying device, and spray an adhesive layer on the flexible circuit board through the spraying machine;

[0033] Step (5), film pasting: Convey the flexible circuit board sprayed with the adhesive layer in step (4) to a film pasting machine, and paste an upper protective film, a lower protective film, a left protective film and a right protective film on the flexible circuit board through the film pasting machine;

[0034] Step (6), inspection: Perform performance testing on the finished flexible circuit board.

[0035] In the present invention, an adhesive layer 10 is sprayed on a substrate 1, and then a protective film 11, a lower protective film 12, a left protective film 13, and a right protective film 14 are respectively adhered to the front side, the rear part, the left side, and the right side of the upper end of the substrate 1 by using the adhesive layer 10, so that the protective film on the substrate 1 is divided into four pieces. At the same time, a tearing head 15 is provided on each of the four protective films, which can facilitate the peeling of the corresponding protective film and avoid peeling a whole protective film, causing damage to the surface of the flexible circuit board, thereby improving the service life of the flexible circuit board. By providing an insulating film layer 9 on the lower end surface of the substrate 1, and the insulating film layer 9 is made of a polyimide film, the insulating effect of the flexible circuit board can be improved, which is practical and effective.

[0036] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0037] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art in the relevant technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A flexible circuit board for a VCM motor, comprising a substrate (1), characterized in that, A left connector (2) is fixedly connected to the left part of the rear end of the substrate (1), a right connector (3) is fixedly connected to the right part of the rear end of the substrate (1), a left conductor (4) is fixedly connected to the rear end of the left connector (2), a right conductor (5) is fixedly connected to the rear end of the right connector (3), a left connection block (6) is fixedly connected to the rear end of the left conductor (4), a right connection block (7) is fixedly connected to the rear end of the right conductor (5), and mounting holes (8) penetrating up and down are formed in the upper ends of the left connection block (6) and the right connection block (7). An insulating film layer (9) is fixedly connected to the lower end of the substrate (1), an adhesive layer (10) is adhesively connected to the upper end of the substrate (1), an upper protective film (11), a lower protective film (12), a left protective film (13) and a right protective film (14) are adhesively connected to the upper end of the adhesive layer (10), and a tearing head (15) is fixedly connected to the inner side surface of each of the upper protective film (11), the lower protective film (12), the left protective film (13) and the right protective film (14). The insulating film layer (9) is a polyimide film, and the upper protective film (11), the lower protective film (12), the left protective film (13) and the right protective film (14) are all made of silica gel. The width and length of each of the four tearing heads (15) are both 5 cm.

2. A processing method for a flexible circuit board of a VCM motor, characterized in that, Specifically, it includes the following manufacturing steps: Step (1), film laminating: Place an insulating film layer below the processed substrate, and use a film laminating machine to laminate the insulating film layer on the substrate. The insulating film layer is made of polyimide material. Step (2), drilling: Drill mounting holes in both the left connection block and the right connection block. Step (3), electroplating: Electroplate the left connection block and the right connection block so that a copper film is coated on the inner walls of the mounting holes drilled in Step (2). Step (4), spraying: Convey the flexible circuit board obtained in Step (3) to a spraying machine through a conveying device, and spray an adhesive layer on the flexible circuit board through the spraying machine. Step (5), film pasting: Convey the flexible circuit board sprayed with the adhesive layer in Step (4) to a film pasting machine, and paste an upper protective film, a lower protective film, a left protective film and a right protective film on the flexible circuit board through the film pasting machine. Step (6), inspection: Conduct performance testing on the finished flexible circuit board.

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