Structure for preventing FPC (Flexible Printed Circuit) from being missed in punching
By setting up leak-proof marks and ejection parts on the large FPC board, the problem of leak-proof or leak-cut in FPC production is solved, and the rapid identification of hedging cut situations and early detection of abnormal products are achieved, which improves the process yield.
Patent Information
- Application Number
- CN202421395012.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-06-18
AI Technical Summary
During the production process of FPC with flexible circuit board, large FPC boards are prone to leakage or leakage, resulting in failure of FPC monomers or partial leakage and leakage, and the narrow tangent line is difficult to recognize with the naked eye, which is easy to cause misjudgment and inflow of abnormal products.
A structure that prevents leakage and punching of FPC is designed. By setting up a leak-proof punching mark on the large FPC board, close to the outer edge of each FPC area, and an ejection piece is set in the punching slot hole to assist the inspector in identifying the punching situation.
It effectively reduces the flow of abnormal punching and cutting into the next process, detects and reworks abnormal products in advance, improves the process yield, and ensures the quality of FPC products.
Smart Images
Figure CN222981762U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flexible printed circuit board production, and particularly relates to a structure for preventing FPC from being missed or mis-cut. Background Art
[0002] A flexible printed circuit board, abbreviated as FPC in English, is a printed circuit made of polyester film (i.e., PET) or polyimide (i.e., PI) as the substrate and forming circuits on the copper foil through etching.
[0003] When producing FPC, multiple FPC monomers are usually processed simultaneously on an FPC large board, and then the FPC monomers are punched using a punching die, so that a tearable punching line is formed between the FPC monomer area and the waste area of the FPC large board, facilitating the extraction of each FPC monomer from the FPC large board.
[0004] During the continuous die punching process of the FPC large board, it is easy to have the entire FPC large board missed in punching, or local missed punching due to excessive warping of part of the FPC large board, ultimately resulting in punching abnormalities such as the FPC monomer not being punched or its local missed punching. Moreover, after the FPC large board is punched, since the punching line between the FPC monomer and the adjacent waste area is very narrow, it is difficult for inspectors to identify with the naked eye and misjudgment occurs, causing the FPC large board with punching abnormalities to flow to the next process, resulting in partial scrapping of the FPC during subsequent use. For example, if the punched FPC large board flows to the client, the abnormally punched products cannot be re-punched during the client's use and can only be scrapped. Summary of the Utility Model
[0005] Therefore, to solve the above problems, the utility model provides a structure for preventing FPC from being missed or mis-cut, which can assist inspectors in quickly identifying whether there are punching defects such as unpunched or missed punching in each FPC area on the punched FPC large board through the anti-leakage punching marks on the FPC large board.
[0006] To achieve the above object, the technical solution provided by the utility model is as follows:
[0007] The utility model provides a structure for preventing FPC from being missed or mis-cut, including an FPC large board, the FPC large board includes a plurality of FPC areas and a waste discharging area connected to the periphery of the FPC areas, an anti-leakage punching mark for inspecting FPC leakage punching is arranged in the waste discharging area, and each FPC area corresponds to at least 1 anti-leakage punching mark; the anti-leakage punching mark is close to the outer edge of the corresponding FPC area, so as to form an anti-leakage punching setting for each FPC area on the punched FPC large board.
[0008] Further, the anti-leakage punching mark is a punching slot hole penetrating the upper and lower surfaces of the FPC large board, and is provided with an ejector for ejecting the waste in the punching slot hole.
[0009] Furthermore, the punching slot is a square slot, and the ejector has a convex post that fits the square slot. The convex post passes through the square slot to eject the waste material in the punching slot; the convex posts correspond to the square slots one by one.
[0010] Furthermore, the size of the square slot is 3×3 mm, and the diameter of the convex post is 2 mm.
[0011] Furthermore, the FPC area is in a long and narrow shape, and at least one anti-leakage punching mark is provided on each side of each FPC area along its long direction.
[0012] Through the technical solution provided by the present utility model, the following beneficial effects are achieved:
[0013] By placing the anti-leakage punching marks in the waste discharge area of the FPC large board close to the outer edge of the corresponding FPC area, and each FPC area corresponds to at least one anti-leakage punching mark, in this way, the anti-leakage punching marks on the FPC large board can be used to assist the inspectors to quickly identify whether there are punching defects such as unpunched or missed punching in each FPC area on the punched FPC large board, effectively reducing the flow of abnormal punched products to the next process, and also being able to detect abnormal punched products early and rework them, so as to further improve the process yield. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 Shown is a schematic diagram of the structure for preventing FPC from being missed punched in the embodiment;
[0015] Figure 2 Shown is a schematic diagram of the ejector in the embodiment;
[0016] Figure 3 Shown is a schematic diagram of the punching slot of the FPC large board sleeved on the convex post of the ejector in the embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] To further illustrate the embodiments, the present utility model provides drawings. These drawings are part of the disclosure of the present utility model, mainly used to illustrate the embodiments, and can be combined with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.
[0018] Now, the present utility model will be further described in combination with the drawings and the specific embodiments.
[0019] Refer to Figure 1As shown in the figure, this embodiment provides a structure for preventing FPC from being missed or improperly punched, including an FPC large board 1. The FPC large board 1 includes a plurality of FPC areas 11 and a waste discharging area 12 connected to the periphery of the FPC areas 11. An anti-leakage punching mark 2 for inspecting whether the FPC is missed or improperly punched is arranged in the waste discharging area 12, and each FPC area 11 corresponds to at least 1 anti-leakage punching mark 2. The anti-leakage punching mark 2 is close to the outer edge of the corresponding FPC area 11, so as to form an anti-leakage punching setting for each FPC area 11 on the punched FPC large board 1.
[0020] In this embodiment, the FPC areas 11 are arranged in a single row or multiple rows on the FPC large board 1, and the part of the FPC large board 1 within each FPC area 11 is the FPC monomer.
[0021] By making the anti-leakage punching mark 2 in the waste discharging area 12 of the FPC large board 1 close to the outer edge of the corresponding FPC area 11, and each FPC area 11 corresponds to at least 1 anti-leakage punching mark 2, in this way, through the anti-leakage punching marks 2 on the FPC large board 1, it can assist the inspectors to quickly identify whether there are punching defects such as unpunched or missed punching in each FPC area 11 on the punched FPC large board 1, effectively reducing the flow of abnormal punched products to the next process, and can also detect abnormal punched products earlier and perform rework, so as to further improve the process yield.
[0022] In another preferred embodiment, as Figure 1 shown, the anti-leakage punching mark 2 is a punching slot hole penetrating the upper and lower surfaces of the FPC large board 1, and is provided with a ejector 3 for ejecting the waste in the punching slot hole as Figure 2 shown.
[0023] More specifically, the anti-leakage punching mark 2 is a square slot hole, and the ejector 3 has a convex column 31 matching the square slot hole. The convex column 31 penetrates through the square slot hole to eject the waste in the punching slot hole, and the convex columns 31 correspond to the square slot holes one by one.
[0024] During specific implementation, the FPC area 11 is in a long and narrow shape, and at least 1 anti-leakage punching mark 2 is arranged on both sides of each FPC area 11 along its length direction, so as to avoid misjudgment of local missed punching of the FPC area 11 caused by different warping degrees on both sides in the length direction of the FPC area 11.
[0025] Specifically, the ejector 3 is an ejecting jig fixed with ejecting pin columns corresponding to each punching slot hole. The size of the square slot hole is 3×3 mm, and the diameter of the convex column 31 is 2 mm, so that it is convenient for the inspectors to set the holes.
[0026] As Figure 3As shown in the figure, when it is necessary to conduct an anti-FPC punching inspection on the large FPC board 1 after punching, the inspector puts the square slot holes on the large FPC board 1 onto the convex posts 31 of the corresponding ejector 3, and quickly ejects and discharges the waste materials in the punching slot holes, so as to facilitate the inspector to more quickly identify with the naked eye whether each punching slot hole is completely punched, indirectly determine whether the adjacent FPC area 11 is punched normally, and intercept the abnormally punched products in time.
[0027] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the present invention in terms of form and details without departing from the spirit and scope of the present invention defined by the appended claims, and all of them are within the protection scope of the present invention.
Claims
1. A structure for preventing FPC from being punched out, comprising a large FPC board, wherein the large FPC board comprises a plurality of FPC areas and a waste discharge area connected to the periphery of the FPC areas, characterized in that: The waste discharge area is provided with an anti-leakage punching mark for checking the FPC leakage punching, and each FPC area corresponds to at least one anti-leakage punching mark; the anti-leakage punching mark is close to the outer edge of the corresponding FPC area to form an anti-leakage punching setting for each FPC area on the FPC large board after punching.
2. The structure for preventing FPC from being punched out inadvertently according to claim 1, characterized in that: The anti-leakage punching mark is a punching slot hole penetrating the upper and lower surfaces of the FPC large board, and is equipped with an ejector for ejecting waste materials in the punching slot hole.
3. The structure for preventing FPC from being punched out inadvertently according to claim 2, characterized in that: The punching slot is a square slot, and the ejector has a boss that matches the square slot. The boss is inserted into the square slot to eject the waste in the punching slot; the bosses correspond one-to-one to the square slots.
4. The structure for preventing FPC from being punched out inadvertently according to claim 3, characterized in that: The size of the square slot is 3×3 mm, and the diameter of the protrusion is 2 mm.
5. The structure for preventing FPC from being punched out inadvertently according to any one of claims 1 to 4, characterized in that: The FPC area is long and narrow, and each FPC area is provided with at least one anti-leakage mark on both sides along the long direction thereof.