Copper foil member manufacturing method

Abstract

The present application discloses a copper foil component manufacturing method, comprising the steps of: (1) adhering a flat gasket tape longitudinally on a part of a flat copper foil tape which is transported along with a flat protective film tape; (2) die-cutting the flat copper foil tape and the flat gasket tape which are transported along with the flat protective film tape, so that the flat copper foil tape is die-cut into a copper foil die-cut product, and the flat gasket tape is die-cut into a flat gasket block which covers a part of the copper foil die-cut product; (3) adhering a flat filling tape on the flat protective film tape and the copper foil die-cut product which are transported along with the flat protective film tape, so as to avoid the flat gasket block; and (4) simultaneously flattening the copper foil die-cut product, the flat filling tape and the flat gasket block which are transported along with the flat protective film tape. The copper foil component manufacturing method of the present application solves the defect that the existing copper foil component with a gasket block cannot be assembled flatly with external components due to the edge curling of the die-cut profile.

Description

Technical Field

[0001] This invention relates to the field of copper foil production, which is a major raw material for printed circuit boards (PCBs), copper clad laminates (CCLs), and lithium-ion batteries, and particularly to a method for manufacturing copper foil components. Background Technology

[0002] As is well known, copper foil is the main raw material for making printed circuit boards (PCBs), copper clad laminates (CCLs), and lithium-ion batteries. Copper foil components are commonly found inside electronic devices such as smartphones, used to connect the grounding path of flexible circuit boards (FCAMs) and main circuit boards (MLBs), or to shield electromagnetic interference (EMI) between the flexible circuit boards (FCAMs) and main circuit boards (MLBs).

[0003] Currently, Figure 1 In the existing copper foil component 100' with shim 110' shown, since the mating surface 210 of the external component 200 (e.g., but not limited to the main circuit board) for mounting the copper foil component 100' is a stepped surface that is recessed in the middle and flat on both sides, it is necessary to use the shim 110' to engage with the recessed part of the mating surface 210 to ensure that the copper foil component 100' and the mating surface 210 of the external component 200 are flat and fit together.

[0004] However, in Figure 1 During the manufacturing process of the existing copper foil component 100' with shim block 110', since the shim block 110 is located in a part of the surface 130' of the copper foil component 100', the steel rod cannot be fully pressed onto the remaining area of ​​the surface 130' of the copper foil component 100'. Therefore, the rolled edge 121' of the die-cut contour 120' of the copper foil component 100' due to the non-springback of the material cannot be flattened, and thus it cannot be ensured that the mating surface 210 of the copper foil component 100' and the external component 200 are flat and fit together.

[0005] Therefore, there is an urgent need for a method for manufacturing copper foil components to overcome one or more of the aforementioned defects. Summary of the Invention

[0006] The purpose of this invention is to provide a method for manufacturing copper foil components that solves the problem that existing copper foil components with raised blocks cannot be smoothly and tightly assembled with external components due to the curled edges of the die-cut contours.

[0007] To achieve the above objectives, the copper foil component manufacturing method of the present invention includes the following steps: (1) longitudinally attaching a flat padding strip to a portion of a flat copper foil strip that is conveyed together with a flat protective film strip; (2) die-cutting the flat copper foil strip and the flat padding strip together, so that while the flat copper foil strip is die-cut into a copper foil die-cut product, the flat padding strip is also die-cut into a flat padding block that covers a portion of the copper foil die-cut product; (3) providing a flat filling strip with a thickness matching the flat padding strip, and attaching the flat filling strip to the flat protective film strip and the copper foil die-cut product that is conveyed together with the flat protective film strip in a manner that avoids the flat padding block; and (4) simultaneously flattening the copper foil die-cut product, the flat filling strip, and the flat padding block that are conveyed together with the flat protective film strip.

[0008] Compared with existing technologies, by using a flat filler strip that is attached to a flat protective film strip and a copper foil die-cut product transported along with the flat protective film strip, avoiding the flat padding blocks, the flat filler strip and the flat padding blocks together form a flat structure on the copper foil die-cut product that matches the size and completely covers the copper foil die-cut product. Then, by applying pressure to this flat structure, the pressure is applied to the die-cut contour of the copper foil die-cut product through the flat structure, achieving the purpose of flattening the rolled edge of the die-cut contour of the copper foil die-cut product. As a result, the copper foil component manufactured by the copper foil component manufacturing method of the present invention can be flatly and fitted with external components, solving the defect of existing copper foil components with padding blocks that cannot be flatly and fitted with external components due to the rolled edge of the die-cut contour.

[0009] Preferably, in step (3), a clearance space is first die-cut out on the flat filler tape being transported, and then the flat filler tape is attached to the remaining area of ​​the copper foil die-cut product except for the flat pad block, by means of the clearance space.

[0010] Preferably, the clearance space is larger than the flat pad block, and the size difference between the clearance space and the flat pad block is 0.3 to 1.0 mm.

[0011] Preferably, before step (1), the raw material of the flat raised material belt being conveyed is longitudinally die-cut and waste is discharged, thereby obtaining multiple flat raised material belts that are separated from each other laterally.

[0012] Preferably, the copper foil component manufacturing method of the present invention further includes the steps of removing the flat filler tape and bonding the flat release film to the copper foil die-cut product and the flat pad block that are conveyed together with the flat protective film tape.

[0013] Preferably, in step (4), the rigid roller assembly rolls the copper foil die-cut product, flat filler strip and flat pad block conveyed from the rigid roller assembly to flatten the die-cut profile of the copper foil die-cut product.

[0014] Preferably, in step (2), a plurality of longitudinally spaced copper foil die-cut products are die-cut from a flat copper foil strip, and a plurality of longitudinally spaced flat pad blocks are die-cut from a plurality of flat pad strips.

[0015] Preferably, in step (2), the die-cutting assembly die-cuts copper foil die-cuts and flat pad blocks from the flat copper foil strip and flat pad strip conveyed from the die-cutting assembly.

[0016] Preferably, the flat filler tape is a release film tape.

[0017] Preferably, the copper foil strip is a double-sided copper foil with single-sided adhesive. Attached Figure Description

[0018] Figure 1 This is a diagram showing the state of the existing copper foil component with raised blocks after assembly with external components.

[0019] Figure 2 yes Figure 1 Enlarged view of section A.

[0020] Figure 3 This is a flowchart of the copper foil component manufacturing method of the present invention.

[0021] Figure 4 The diagram shows a plan view of a flat protective film strip, a flat copper foil strip conveyed along with the flat protective film strip, and a flat raised strip longitudinally attached to a portion of the flat copper foil strip.

[0022] Figure 5 The diagram shows the flat protective film strip, flat copper foil strip, and flat raised strip passing through the die-cutting assembly.

[0023] Figure 6 The diagram shows a plan view of the flat copper foil strip and the flat pad strip being die-cut into copper foil die-cut products and flat pad blocks, which are conveyed together with the flat protective film strip.

[0024] Figure 7 Is Figure 6 Based on this, a plan view of the flat filler strip is displayed.

[0025] Figure 8 The diagram shows a plan view of the flat filler strip, copper foil die-cuts, flat padding blocks, and flat protective film strip passing through the rigid roller assembly.

[0026] Figure 9 The diagram shows a plan view of the protective film, copper foil die-cuts, flat pads, and release film stacked in sequence.

[0027] Figure 10 yes Figure 9 3D exploded view.

[0028] Figure 11 This displays a plan view of the flat, raised strip material.

[0029] Figure 12 The plan view shows the external components being flatly and securely assembled with the copper foil die-cut product featuring flat padding blocks.

[0030] Figure 13 yes Figure 12 Enlarged view of section D. Detailed Implementation

[0031] To illustrate the technical content and structural features of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0032] Please see Figure 3 The copper foil component manufacturing method of the present invention is used to manufacture a component with a flat pad block 11 (see...). Figure 9 The copper foil component is mounted on the external component 200 (see 13) to ensure that the copper foil die-cut product 31 with flat pad 11 is in a flat and fitted state with the mating surface 210 of the external component 200 (see 13). Figure 13 As shown), this solves the problem that the existing copper foil component 100' with shim block 110' cannot be smoothly and snugly assembled with the external component 200 due to the rolled edge 121' of the die-cut contour 120'. (See attached image). Figure 2 As shown. Combined with... Figure 4 , Figure 6 and Figure 7 The copper foil component manufacturing method of the present invention includes the following steps: S001. The flat padding strip 10a is longitudinally (see the direction indicated by arrow B) attached to a portion of the flat copper foil strip 30 that is being transported together with the flat protective film strip 20. That is, the flat padding strip 10a only covers a portion of the flat copper foil strip 30, leaving an exposed area of ​​the flat copper foil strip 30 in the transverse direction (see the direction indicated by arrow C). Specifically, combined with... Figure 4 and Figure 11 As an example, before step S001, the raw material 10 of the conveyed flat padding strip 10a is longitudinally die-cut and waste is removed, thereby obtaining two flat padding strips 10a that are laterally separated from each other. This design excludes the two outer edges and the middle part of the raw material 10, retaining two separate and continuous flat padding strips 10a. These two flat padding strips 10a are also continuously bonded to a portion of the flat copper foil strip 30, thereby effectively improving the bonding accuracy between the flat padding strips 10a and this portion of the area. Obviously, depending on actual needs, the raw material 10 can also be die-cut into three or more flat padding strips 10a, therefore... Figure 4 The above is the limit.

[0033] S002. The flat copper foil strip 30 and the flat padding strip 10a, which are conveyed along with the flat protective film strip 20, are die-cut together. While the flat copper foil strip 30 is die-cut into copper foil die-cut product 31, the flat padding strip 10a is also die-cut into flat padding blocks 11. These flat padding blocks 11 cover a portion of the copper foil die-cut product 31. (See attached diagram). Figure 6 As shown. Specifically, in conjunction with Figure 5 and Figure 8 In step S002, the die-cutting assembly 60 die-cuts copper foil die-cut products 31 and flat padding blocks 11 from the flat copper foil strip 30 and flat padding strip 10a conveyed from the die-cutting assembly 60. This design allows the die-cutting assembly 60 to perform online continuous die-cutting operation on the conveyed flat copper foil strip 30 and flat padding strip 10a, further improving the manufacturing efficiency of the copper foil component manufacturing method of the present invention; additionally, as Figure 4 and Figure 7 As shown, in step S002, a plurality of longitudinally spaced copper foil die-cut products 31 are die-cut from the flat copper foil strip 30, and a plurality of longitudinally spaced flat pad blocks 11 are die-cut from the plurality of flat pad strips 10a. This design can further improve the manufacturing efficiency of the copper foil component manufacturing method of the present invention.

[0034] S003. A flat filler tape 40 with a thickness matching that of the flat padding tape 10a is provided. The flat filler tape 40 is adhered to the flat protective film tape 20 and the copper foil die-cut product 31 conveyed along with the flat protective film tape 20, and the flat filler tape 40 is positioned to avoid the flat padding block 11, ensuring that the flat filler tape 40 and the flat padding block 11 together form a flat structure on the copper foil die-cut product 31 that is sized to match and completely covers the copper foil die-cut product 31. Specifically, as... Figure 7 As shown, in step S003, a clearance space 41 is first die-cut into the flat filler tape 40 being transported. Then, the flat filler tape 40 is adhered to the remaining area of ​​the copper foil die-cut product 31, excluding the area covered by the flat padding block 11, using the clearance space 41. This effectively ensures the reliability of the mutual avoidance between the flat filler tape 40 and the flat padding block 11 adhered to the copper foil die-cut product 31. It should be noted that, for the flat filler tape 40 to avoid the flat padding block 11 using the clearance space 41, the clearance space 41 must be larger than the flat padding block 11, and the dimensional difference between the clearance space 41 and the flat padding block 11 must be 0.3 to 1.0 mm. Figure 7 The sum of the two D values ​​is 0.3 to 1.0 mm, which effectively improves the convenience and reliability of the flat filler tape 40 adhering to the copper foil die-cut product 31 in the area excluding the flat pad block 11 covering.

[0035] And S004, simultaneously flatten the copper foil die-cut product 31, the flat filler belt 40, and the flat padding block 11 conveyed together with the flat protective film 20, so that the applied pressure acts on the die-cut contour 311 of the copper foil die-cut product 31 through the flat filler belt 40 and the flat padding block 11, thereby flattening the curled edge of the die-cut contour 311 of the copper foil die-cut product 31 and preventing the die-cut contour 311 from having curled edges. Specifically, as Figure 8 As shown, in step S004, the rigid roller assembly 70 rolls the copper foil die-cut product 31, the flat filler strip 40, and the flat padding block 11 conveyed through the rigid roller assembly 70, thereby flattening the die-cut contour 311 of the copper foil die-cut product 31. This design enables continuous online rolling of the copper foil die-cut product 31, the flat filler strip 40, and the flat padding block 11, further improving the manufacturing efficiency of the copper foil component manufacturing method of the present invention. More specifically, see the description below.

[0036] Combination Figure 9 and Figure 10 As an example, the copper foil component manufacturing method of the present invention further includes the steps of removing the flat filler tape 40 and attaching the flat release film 50 to the copper foil die-cut product 31 and the flat pad block 11 conveyed together with the flat protective film tape 20, so as to provide protection for the copper foil die-cut product 31 with the flat pad block 11 when not in use; when in use, the flat release film 50 is first removed, and then the remaining positions of the flat pad block 11 and the copper foil die-cut product 31, except for those covered by the flat pad block 11, are flatly attached to the mating surface 210 of the external component 200; finally, the flat protective film 21 is removed, as shown in the figure. Figure 12 As shown. Additionally, the flat filler tape 40 is a release film tape, which facilitates the removal of the flat filler tape 40. Furthermore, the flat copper foil tape 30 is a double-sided adhesive copper foil.

[0037] Compared with the prior art, by using the flat filler strip 40 that is attached to the flat protective film strip 20 and the copper foil die-cut product 30 conveyed together with the flat protective film strip 20 to avoid the flat pad 11, the flat filler strip 40 and the flat pad 11 together form a flat structure on the copper foil die-cut product 31 that matches the size and completely covers the copper foil die-cut product 31. Then, by applying pressure to this flat structure, the pressure is applied to the die-cut contour 311 of the copper foil die-cut product 31 through the flat structure, so as to flatten the rolled edge of the die-cut contour 311 of the copper foil die-cut product 31. Thus, the copper foil component manufactured by the copper foil component manufacturing method of the present invention can be flatly attached and assembled with the external component 200, which solves the defect that the copper foil component 100' with the pad 110' cannot be flatly attached and assembled with the external component 200 due to the rolled edge 121' of the die-cut contour 120'.

[0038] It should be noted that arrow B in the attached diagram indicates the conveying direction, which is also longitudinal, while arrow C indicates the transverse direction. Furthermore, the matching thickness of the flat filling material strip 40 and the flat raising material strip 10a means that their thicknesses are the same or approximately the same.

[0039] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are within the scope of the present invention.

Claims

1. A method for manufacturing a copper foil component, characterized in that, Includes the following steps: (1) The flat padding strip is longitudinally attached to a portion of the flat copper foil strip that is being transported together with the flat protective film strip; (2) The flat copper foil strip and the flat padding strip conveyed with the flat protective film are die-cut together, so that the flat copper foil strip is die-cut into copper foil die-cut products, and the flat padding strip is die-cut into flat padding blocks that cover part of the copper foil die-cut products. (3) Provide a flat filler tape with a thickness matching that of the flat padding tape, and attach the flat filler tape to the flat protective film tape and the copper foil die-cut products conveyed together with the flat protective film tape, avoiding the flat padding blocks; and (4) Simultaneously flatten the copper foil die-cut products, flat filler belt and flat pad block that are conveyed together with the flat protective film belt.

2. The method for manufacturing copper foil components according to claim 1, characterized in that, In step (3), a clearance space is first die-cut into the flat filler tape being transported, and then the flat filler tape is attached to the remaining area of ​​the copper foil die-cut product except for the flat pad block, by means of the clearance space.

3. The method for manufacturing copper foil components according to claim 1, characterized in that, Avoid spaces larger than flat pad blocks, with a size difference of 0.3 to 1.0 mm between the avoid space and the flat pad blocks.

4. The method for manufacturing copper foil components according to claim 1, characterized in that, Before step (1), the raw material of the flat raised material belt in the conveyor is longitudinally die-cut and waste is discharged, thereby obtaining multiple flat raised material belts that are separated from each other in the transverse direction.

5. The method for manufacturing copper foil components according to claim 1, characterized in that, It also includes the steps of removing the flat filler tape and bonding the flat release film to the copper foil die-cuts and flat pads that are conveyed together with the flat protective film tape.

6. The method for manufacturing copper foil components according to claim 1, characterized in that, In step (4), the rigid roller assembly rolls the copper foil die-cut product, flat filler strip and flat pad block conveyed from the rigid roller assembly to flatten the die-cut contour of the copper foil die-cut product.

7. The method for manufacturing copper foil components according to claim 4, characterized in that, In step (2), multiple longitudinally spaced copper foil die-cut products are die-cut from the flat copper foil strip, and multiple longitudinally spaced flat pad blocks are die-cut from the multiple flat pad strips.

8. The method for manufacturing copper foil components according to claim 1 or 7, characterized in that, In step (2), the die-cutting assembly cuts out copper foil die-cut products and flat pad blocks from the flat copper foil strip and flat pad strip that are fed through the die-cutting assembly.

9. The method for manufacturing copper foil components according to claim 1, characterized in that, The flat filler tape is a release film tape.

10. The method for manufacturing copper foil components according to claim 1, characterized in that, The flat copper foil strip is a double-sided copper foil with single-sided adhesive.

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