Manufacturing process of vehicle flat conductor light flexible flat cable

Abstract

The invention provides a manufacturing process of a vehicle flat conductor light flexible flat cable, and relates to the technical field of flexible flat cable manufacturing. According to the manufacturing process of the flat conductor light flexible flat cable for the vehicle, a manufacturing base material for manufacturing the flat conductor light flexible flat cable for the vehicle is polyesterimide, the high temperature resistance of the polyesterimide is more than 400 DEG C for 10 seconds, the tensile strength of the polyesterimide is 15,000-30,000 PSI, and the polyesterimide is a high-temperature-resistant and high-strength high polymer material and can be used for manufacturing the flat conductor light flexible flat cable for the vehicle. The material can be kept invariant and unmelted for 10 seconds at a high temperature of 400 DEG C or above, and is very suitable for being used as a conductor material for vehicles. The flat conductor light and soft flat cable manufactured by the manufacturing process is thinner in thickness and better in bending resistance, so that the flat conductor light and soft flat cable has higher flexibility, can well adapt to dynamic changes in the automobile driving process, and cannot be damaged due to frequent bending.

Description

Technical Field

[0001] The invention relates to the technical field of flexible flat cable manufacturing, and in particular to a manufacturing process of a flat conductor lightweight flexible flat cable for vehicles. Background Art

[0002] Flexible flat cables are used in electronic products to provide signal transmission functions. Flexible flat cables are light and thin, so they are more widely used in electronic products that focus on lightness and thinness. In automotive electronic equipment, a large number of flexible flat cables are needed. For example, they are widely used in the connection lines between the engine control unit (ECU) and various sensors (such as temperature sensors, pressure sensors, etc.), or used to connect vehicle-mounted display screens, audio equipment, etc. During driving, the car may be bumpy and floating due to road conditions, or in the connection lines of car doors, when the doors are opened and closed, a large bending line is required. Therefore, the present invention proposes a production and manufacturing process for a flat conductor lightweight flexible cable for automobiles, which is used to produce a flat conductor lightweight flexible cable that is more suitable for automobiles, thereby solving the above-mentioned problems. Summary of the invention

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the present invention provides a manufacturing process for a flat conductor lightweight flexible flat cable for a vehicle. The flat conductor lightweight flexible flat cable manufactured by the process is thinner and more resistant to bending, thereby having higher flexibility. During the operation of the vehicle, the vehicle body will vibrate, twist, etc., so the flat conductor lightweight flexible flat cable can adapt well to such dynamic changes and will not be damaged due to frequent bending. Moreover, its thickness is very thin, so its flat shape allows it to be wired in a narrow space. The flexible flat cable can easily pass through the narrow gaps between various instruments and electronic equipment, reducing the clutter of wiring between various devices in the vehicle.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a manufacturing process of a flat conductor lightweight flexible flat cable for vehicles, the flat conductor lightweight flexible flat cable for vehicles is a double-sided board, and the manufacturing process steps of the flat conductor lightweight flexible flat cable for vehicles are as follows:

[0007] S1: Double-sided board processing, the copper foil raw material and polyester imide substrate are cut into fixed sizes by laser cutting, and then the board is drilled and plated with through holes. After the through holes are plated, the board is coated with light-resistant agent;

[0008] S2: Perform circuit imaging on the plate. Circuit imaging requires exposing, developing and etching the plate;

[0009] S3: The base plate is bonded to the cover film, and the cover film is completely bonded to the etched copper surface as a protective film and insulation layer on the line;

[0010] S4: Photosensitive ink printing, using printing to make the photosensitive ink adhere to the copper surface, and produce a chemical reaction with exposure to protect the copper foil and indicate the placement of parts;

[0011] S5: Surface treatment. The surface treatment processes of the substrate board include gold plating and tin spraying. Then, tin is electroplated and gold plating and tin spraying are used to increase the oxidation resistance, friction resistance and conductivity of the contact surface.

[0012] S6: A reinforcing sheet is attached for insulation treatment, and the surface of the substrate is covered with insulating material to provide electrical insulation and mechanical protection, and to increase the supporting force of the entire substrate board;

[0013] S7: Punching and forming, arranging the insulated conductors into the shape of flat cables according to the design requirements, and punching the positioning holes into through holes to facilitate the subsequent punching and forming of the sheet metal and auxiliary processing;

[0014] S8: Test and inspect shipment. Electrical tests and appearance inspections are performed on the manufactured flat conductor lightweight flexible cables to ensure that their quality meets the requirements.

[0015] Preferably, the substrate of the flat conductor lightweight flexible cable for automobile is polyesterimide, and the polyesterimide has a high temperature resistance of more than 400 degrees Celsius for 10 seconds and a tensile strength of 15,000 to 30,000 PSI.

[0016] Through the above technical solution, polyesterimide is a high-temperature resistant, high-strength polymer material that can remain unchanged and unmelted for 10 seconds at temperatures above 400 degrees Celsius, making it very suitable as a conductor material for vehicles.

[0017] Preferably, the flat conductor lightweight flexible cable for vehicles uses rolled copper as the conductor material. The rolled copper has high strength and is resistant to bending. The thickness of the copper foil is 0.1MM*0.7MM.

[0018] Through the above technical solution, automotive flat conductor lightweight flexible cables use rolled copper as material. Rolled copper is softer and easier to bend. The conductor thickness parameter of rolled copper is set to 0.1MM*0.7MM. The thinner the copper foil, the smaller the minimum width and spacing that can be achieved, so it is more compact.

[0019] Preferably, the number of the flat conductor lightweight flexible flat cables for vehicles is 10 or more;

[0020] Through the above technical solution, the number of wiring cables is set to more than 10 to meet the maximum voltage and current of the vehicle.

[0021] Preferably, the material of the thermosetting adhesive used in the flat conductor lightweight flexible flat cable for vehicles is relatively soft polyethylene;

[0022] Through the above technical solution, the strength of polyethylene is relatively low, and polyethylene is selected to use a thinner substrate and transparent adhesive to reduce the stress on the surface of the copper foil, so that the chance of micro cracks in the copper foil is relatively small.

[0023] Preferably, in the S1 double-sided board processing process, the through-hole plating is to plate a layer of palladium ions on the glue layer between the copper foils as a plating medium for subsequent copper plating.

[0024] Preferably, in the S2 route imaging process, the circuit on the film is exposed to form on the copper foil base using a photoresist method, the negative photoresist cooperates with the negative film to transfer the film circuit to the dry film using UV light, and the unreacted dry film is removed by alkaline liquid. The reacted dry film is polymerized by UV light to form a molecular structure insoluble in alkaline liquid, and the copper foil not protected by the dry film is etched by copper etching liquid, and the copper foil protected by the dry film forms a circuit.

[0025] Preferably, the double-sided structure of the automotive flat conductor lightweight flexible cable has a substrate layer in the middle, adhesive layers are fixedly provided at both ends of the substrate layer, the outsides of the two adhesive layers are copper foil layers, the outsides of the two copper foil layers are plated through hole layers, and the outer layers of the two plated through hole layers are adhesive layers and covering layers.

[0026] (III) Beneficial effects

[0027] The present invention provides a manufacturing process for a flat conductor lightweight flexible flat cable for vehicles, which has the following beneficial effects:

[0028] 1. The present invention provides a manufacturing process for a flat conductor light flexible flat cable for a vehicle. The flat conductor light flexible flat cable manufactured by the manufacturing process is thinner and has better bending resistance, so it has higher flexibility. During the operation of the car, the car body will vibrate, twist, etc., so the flat conductor light flexible flat cable can adapt well to such dynamic changes and will not be damaged due to frequent bending. Moreover, its thickness is very thin, so its flat shape allows it to be wired in a narrow space. The flexible flat cable can easily pass through the narrow gaps between various instruments and electronic equipment, reducing the clutter of wiring between various devices in the car.

[0029] 2. The present invention provides a manufacturing process for a flat conductor lightweight flexible flat cable for use in a vehicle. The flexible flat cable manufactured by this manufacturing process has a better conductive effect and can effectively reduce the loss during signal transmission, thereby ensuring the integrity and accuracy of the signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1The manufacturing process flow chart of the flat conductor lightweight flexible flat cable for vehicles of the present invention is as follows;

[0031] Figure 2 It is a schematic structural diagram of the flat conductor lightweight flexible flat cable for vehicles of the present invention.

[0032] Among them, 1. Base material layer; 2. Glue material layer; 3. Copper foil layer; 4. Plated-through layer; 5. Glue layer; 6. Covering layer. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In the description of this application, it should be noted that the terms used here are only for describing specific implementations, and are not intended to limit the exemplary implementations according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and devices known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and devices should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0034] Embodiment 1:

[0035] like Figure 1 As shown, an embodiment of the present invention provides a manufacturing process for a flat conductor lightweight flexible flat cable for a vehicle, and the manufacturing process steps of the flat conductor lightweight flexible flat cable for a vehicle are as follows:

[0036] S1: Double-sided board processing, the copper foil raw material and polyester imide substrate are cut into fixed sizes by laser cutting, and then the board is drilled and plated with through holes. After the through holes are plated, the board is coated with light-resistant agent;

[0037] S2: Perform circuit imaging on the plate. Circuit imaging requires exposing, developing and etching the plate;

[0038] S3: The base plate is bonded to the cover film, and the cover film is completely bonded to the etched copper surface as a protective film and insulation layer on the line;

[0039] S4: Photosensitive ink printing, using printing to make the photosensitive ink adhere to the copper surface, and produce a chemical reaction with exposure to protect the copper foil and indicate the placement of parts;

[0040] S5: Surface treatment. The surface treatment processes of the substrate board include gold plating and tin spraying. Then, tin is electroplated and gold plating and tin spraying are used to increase the oxidation resistance, friction resistance and conductivity of the contact surface.

[0041] S6: A reinforcing sheet is attached for insulation treatment, and the surface of the substrate is covered with insulating material to provide electrical insulation and mechanical protection, and to increase the supporting force of the entire substrate board;

[0042] S7: Punching and forming, arranging the insulated conductors into the shape of flat cables according to the design requirements, and punching the positioning holes into through holes to facilitate the subsequent punching and forming of the sheet metal and auxiliary processing;

[0043] S8: Test and inspect shipment. Electrical tests and appearance inspections are performed on the manufactured flat conductor lightweight flexible cables to ensure that their quality meets the requirements.

[0044] The base material of the flat conductor lightweight soft cable for automobile is polyesterimide, which can withstand high temperature of more than 400 degrees Celsius for 10 seconds and has a tensile strength of 15,000-30,000PSI. Polyesterimide is a high-temperature resistant and high-strength polymer material. It can remain unchanged and unmelted for 10 seconds at high temperatures above 400 degrees Celsius. It is very suitable as a conductor material for automobiles. Rolled copper is used as the conductor material. Rolled copper has high strength and is resistant to bending. The thickness of the copper foil is 0.1MM*0.7MM The automotive flat conductor lightweight soft cable uses rolled copper as the material. Rolled copper is softer and easier to bend. The conductor thickness parameter of rolled copper is set to 0.1MM*0.7MM. The thinner the copper foil, the smaller the minimum width and spacing that can be achieved, so it is more compact. The number of cables is set to more than 10 to meet the maximum voltage and current for the vehicle. The material of the thermosetting adhesive used is softer polyethylene. Polyethylene uses a thinner base material and transparent adhesive to reduce the stress on the surface of the copper foil, so that the chance of microcracks in the copper foil is relatively small.

[0045] In the S1 double-sided board processing process, the through-hole plating is to plate a layer of palladium ions on the glue layer between the copper foils as the electroplating medium for subsequent copper plating. In the S2 line imaging process, the circuit on the film is exposed to form on the copper foil base using photoresist. The negative photoresist is used with the negative film to transfer the film circuit to the dry film using UV light. The unreacted dry film is removed by alkaline liquid. The reacted dry film is polymerized by UV light to form a molecular structure that is insoluble in alkaline liquid. The copper foil not protected by the dry film is etched with copper etching liquid, and the copper foil protected by the dry film forms a circuit.

[0046] Embodiment 2:

[0047] like Figure 2 As shown, the double-sided structure of the automotive flat conductor lightweight flexible cable has a substrate layer 1 in the middle, adhesive layers 2 are fixedly provided at both ends of the substrate layer 1, the outsides of the two adhesive layers 2 are copper foil layers 3, the outsides of the two copper foil layers 3 are plated through hole layers 4, and the outer layers of the two plated through hole layers 4 are adhesive layers 5 and covering layers 6.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A manufacturing process for a flat conductor lightweight flexible flat cable for a vehicle, characterized in that: The flat conductor lightweight flexible flat cable for vehicles is a double-sided board. The manufacturing process steps of the flat conductor lightweight flexible flat cable for vehicles are as follows: S1: Double-sided board processing, the copper foil raw material and polyester imide substrate are cut into fixed sizes by laser cutting, and then the board is drilled and plated with through holes. After the through holes are plated, the board is coated with light-resistant agent; S2: Perform circuit imaging on the plate. Circuit imaging requires exposing, developing and etching the plate; S3: The base plate is bonded to the cover film, and the cover film is completely bonded to the etched copper surface as a protective film and insulation layer on the line; S4: Photosensitive ink printing, using printing to make the photosensitive ink adhere to the copper surface, and produce a chemical reaction with exposure to protect the copper foil and indicate the placement of parts; S5: Surface treatment. The surface treatment processes of the substrate board include gold plating and tin spraying. Then, tin is electroplated and gold plating and tin spraying are used to increase the oxidation resistance, friction resistance and conductivity of the contact surface. S6: A reinforcing sheet is attached for insulation treatment, and the surface of the substrate is covered with insulating material to provide electrical insulation and mechanical protection, and to increase the supporting force of the entire substrate board; S7: Punching and forming, arranging the insulated conductors into the shape of flat cables according to the design requirements, and punching the positioning holes into through holes to facilitate the subsequent punching and forming of the sheet metal and auxiliary processing; S8: Test and inspect shipment. Electrical tests and appearance inspections are performed on the manufactured flat conductor lightweight flexible cables to ensure that their quality meets the requirements.

2. The manufacturing process of a flat conductor lightweight flexible flat cable for vehicles according to claim 1, characterized in that: The base material of the automotive flat conductor lightweight flexible cable is polyesterimide, which has a high temperature resistance of more than 400 degrees Celsius for 10 seconds and a tensile strength of 15,000 to 30,000 PSI.

3. The manufacturing process of a flat conductor lightweight flexible flat cable for vehicles according to claim 1, characterized in that: The flat conductor lightweight flexible cable for the car uses rolled copper as the conductor material. Rolled copper has high strength and is resistant to bending. The thickness of the copper foil is 0.1MM*0.7MM.

4. The manufacturing process of a flat conductor lightweight flexible flat cable for vehicles according to claim 1, characterized in that: The number of the flat conductor lightweight flexible cables for the vehicle is more than 10.

5. The manufacturing process of a flat conductor lightweight flexible flat cable for vehicles according to claim 1, characterized in that: The material of the thermosetting adhesive used in the flat conductor lightweight soft cable for this car is relatively soft polyethylene.

6. The manufacturing process of a flat conductor lightweight flexible flat cable for vehicles according to claim 1, characterized in that: In the S1 double-sided board processing process, the through-hole is plated with a layer of palladium ions on the glue layer between the copper foils, which serves as the electroplating medium for the subsequent copper plating.

7. The manufacturing process of a flat conductor lightweight flexible flat cable for vehicles according to claim 1, characterized in that: In the S2 line imaging process, the circuit on the film is exposed to form on the copper foil base using photoresist. The negative photoresist is used with the negative film to transfer the film circuit to the dry film using UV light. The unreacted dry film is removed by alkaline liquid. The reacted dry film polymerizes due to UV light exposure to form a molecular structure that is insoluble in alkaline liquid. The copper foil not protected by the dry film is etched with copper etching liquid, and the copper foil protected by the dry film forms a circuit.

8. The manufacturing process of a flat conductor lightweight flexible flat cable for vehicles according to claim 1, characterized in that: The double-sided structure of the flat conductor lightweight flexible flat cable for vehicles comprises a base material layer (1) in the middle, adhesive layers (2) are fixedly arranged at both ends of the base material layer (1), the outsides of the two adhesive layers (2) are copper foil layers (3), the outsides of the two copper foil layers (3) are plated through hole layers (4), and the outer layers of the two plated through hole layers (4) are adhesive layers (5) and covering layers (6).

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