Method for solving local folding of copper foil

Abstract

The application provides a method for solving the local flanging of copper foil, which makes the fine lead position of the copper foil pass through a special roller to be flattened and then smoothly feed, so as to ensure the quality of the whole FDC product. At least two groups of steel rollers are arranged at intervals behind a copper foil cutter, so that the copper foil punched by the copper foil cutter sequentially passes through the middle gap of each pair of steel rollers, and then a special flattening roller is arranged at the position corresponding to the fine lead of the copper foil, and the outer peripheral surface of the special flattening roller is provided with a flattening protrusion corresponding to the position of the fine lead, and the flattening protrusion is only used for the flattening operation of the fine lead position.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of FDC product processing, in particular to a method for solving local copper foil flanging. BACKGROUND

[0002] The FDC product refers to a soft plate copper foil flat cable made by using a die cutting process, and the structure is mainly PSA+PI heat fixing film+CU+PI heat fixing film. Figure 1 The product structure layer is more, and there is a copper foil in the middle, the thickness of the copper foil is 70um, the material is relatively thick, and the product size is too large. When the copper foil is die cut, the copper foil material will deform, especially at the position corresponding to the terminal, and the local enlarged structure is shown in the figure. Two rows of terminals are arranged, and the outer row of terminals 1 needs to pass through the area between the inner row of terminals 3 through a thin lead 2. The width of the thin lead 2 is relatively small compared with the remaining leads. When the copper foil is punched by a single die cutting knife in the prior art, the flanging height of the copper foil at the position of the thin lead 2 is greater than 30um. Since the flanging height of the copper foil edge in the FDC product needs to be controlled below 30um to ensure normal operation, otherwise the copper foil edge is easy to produce bubbles when combined with the PI heat fixing film glue, which leads to product deformation and layering. Therefore, a method for solving local copper foil flanging needs to be developed.

[0003] SUMMARY

[0004] A method for solving local copper foil flanging, characterized by: at least two groups of steel rollers are arranged at intervals behind the copper foil cutter, so that the copper foil punched by the copper foil cutter sequentially passes through the middle gap of each pair of steel rollers, and then a special flattening roller is arranged at the position corresponding to the thin lead of the copper foil. The outer periphery of the special flattening roller is provided with a flattening protrusion corresponding to the position of the thin lead, and the flattening protrusion is only used for flattening operation at the position of the thin lead.

[0005] Further characterized by:

[0006] The number of groups of steel rollers is three, and the three groups of steel rollers are sequentially and interval arranged along the feeding direction of the copper foil.

[0007] The copper foil cutter is provided with two groups, specifically a first copper foil cutter and a second copper foil cutter. The first copper foil cutter does not punch the outer row of terminals and the corresponding thin lead, and the first copper foil cutter leaves the corresponding position of the outer row of terminals and the thin lead area;

[0008] The second copper foil cutter punches the outer row of terminals and the thin lead, and the inner terminal transition lead;

[0009] The rear of the first copper foil cutter is sequentially provided with three groups of steel rollers, the rear of the three groups of steel rollers is provided with a second copper foil cutter, and the rear of the second copper foil cutter is provided with a special flattening roller.

[0010] The width direction sides of the starting end of the first copper foil cutter are provided with two first alignment structures for cross positioning.

[0011] The width direction sides of the starting end of the second copper foil cutter are provided with two second alignment structures for cross positioning.

[0012] The width direction sides of all the flattening protrusions of the special flattening roller are provided with two third alignment structures for cross positioning.

[0013] The first alignment structure and the corresponding second alignment structure are combined to form cross positioning, and the third alignment structure and the corresponding second alignment structure are combined to form cross positioning.

[0014] The first group of steel rollers are two same steel rollers arranged in an up-down mode, the passing gap between the two steel rollers is 100-110 mu m, the second group of steel rollers are two same steel rollers arranged in an up-down mode, the passing gap between the two steel rollers is 90-100 mu m, and the third group of steel rollers are two same steel rollers arranged in an up-down mode, the passing gap between the two steel rollers is 75-90 mu m; the height of the flange of the copper foil after the first copper foil cutter is punched is less than 30 mu m.

[0015] After the application is adopted, the thin lead position of the copper foil terminal is flattened by the special profiling flattening protrusion, so that the thin lead position of the copper foil is smoothly fed after being flattened by the special roller, and the quality of the entire FDC product is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic view of a terminal position of the FDC product;

[0017] Figure 2 It is a schematic view of a process arrangement of the application;

[0018] Figure 3 It is a schematic view of the blade unfolding of the first copper foil cutter of the application;

[0019] Figure 4 It is a schematic view of the blade unfolding of the second copper foil cutter of the application;

[0020] Figure 5 It is a schematic view of the unfolding of all the flattening protrusions of the special flattening roller of the application;

[0021] Figure 6 It is a front view of the special flattening roller of the application. DETAILED DESCRIPTION

[0022] A method for solving the local flanging of copper foil is seen Figures 2-6 : Three sets of steel rollers are arranged at intervals behind the first copper foil cutter 10, so that the copper foil punched by the first copper foil cutter 10 sequentially passes through the middle gap of each pair of steel rollers, then a second copper foil cutter 50 is arranged, and a special flattening roller 60 is arranged behind the second copper foil cutter 50, waste treatment is carried out behind the special flattening roller 60, and the outer periphery of the special flattening roller 60 is provided with a profiled flattening protrusion 61 corresponding to the position of the fine lead, and the flattening protrusion 61 is only used for flattening work at the position of the fine lead.

[0023] In specific implementation, the three sets of steel rollers are sequentially and interval arranged along the feeding direction of the copper foil, sequentially being the first set of steel rollers 20, the second set of steel rollers 30, and the third set of steel rollers 40.

[0024] The first copper foil cutter 10 does not punch the outer terminal and the corresponding fine lead, and the first copper foil cutter 10 leaves the corresponding position of the outer terminal and the fine lead area; the second copper foil cutter 50 punches out the outer terminal and the fine lead, and the inner terminal transition lead;

[0025] The two sides of the starting end of the first copper foil cutter 10 in the width direction are provided with two first alignment structures 11 for cross positioning;

[0026] The two sides of the starting end of the second copper foil cutter 50 in the width direction are provided with two second alignment structures 51 for cross positioning;

[0027] The two sides of all the flattening protrusions of the special flattening roller 60 in the width direction are provided with two third alignment structures 62 for cross positioning;

[0028] The first alignment structure 11 and the corresponding second alignment structure 51 form cross positioning, and the third alignment structure 62 and the corresponding second alignment structure 51 form cross positioning.

[0029] In the specific embodiment, the first set of steel rollers 20 are two identical steel rollers arranged in an up-down manner, the passing gap between the two steel rollers is 100-110 μm, the second set of steel rollers 30 are two identical steel rollers arranged in an up-down manner, the passing gap between the two steel rollers is 90-100 μm, and the third set of steel rollers 40 are two identical steel rollers arranged in an up-down manner, the passing gap between the two steel rollers is 75-90 μm; to ensure that the flanging height of the copper foil punched by the first copper foil cutter 10 is less than 30 μm.

[0030] The working principle is as follows: when punching with one cutter at first, the fine lead position is easily cut off, now the fine lead position is independently punched by the second copper foil cutter, and the fine lead position of the outer copper foil terminal is flattened by the special profiled flattening protrusion, so that the fine lead position of the copper foil is continuous, and after being flattened by the special roller, the copper foil is smoothly fed, and the quality of the entire FDC product is ensured.

[0031] It will be obvious to a person skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments and can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims to the identity of the reference signs therein.

[0032] Furthermore, it should be understood that although the description is made on the basis of the embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A method for solving the problem of partial flanging of copper foil, characterized by: At least two sets of steel rollers are arranged at intervals behind the copper foil cutter, so that the copper foil punched by the copper foil cutter passes through the middle gap of each pair of steel rollers in sequence. Then, a special flattening roller is set at the position of the copper foil corresponding to the thin lead. The outer circumference of the special flattening roller is provided with a flattening protrusion corresponding to the position of the thin lead. The flattening protrusion is only used for flattening the thin lead position; The copper foil cutters are provided in two groups, specifically a first copper foil cutter and a second copper foil cutter. The first copper foil cutter does not punch out the outer terminals and the corresponding thin leads, and the first copper foil cutter leaves corresponding positions for the outer terminals and the thin leads; the second copper foil cutter punches out the outer terminals and the thin leads, as well as the inner transition leads.

2. A method for solving the problem of partial flanging of copper foil according to claim 1, characterized in that: The number of groups of steel rollers is three, and the three groups of steel rollers are arranged in sequence along the feeding direction of the copper foil, namely the first group of steel rollers, the second group of steel rollers, and the third group of steel rollers.

3. The method for solving the problem of partial flanging of copper foil according to claim 1, characterized in that: Three groups of steel rollers are sequentially arranged behind the first copper foil cutter, a second copper foil cutter is arranged behind the three groups of steel rollers, and a special leveling roller is arranged behind the second copper foil cutter.

4. The method for solving the problem of partial flanging of copper foil according to claim 1, wherein: Two first alignment structures for cross positioning are provided on both sides of the starting end of the first copper foil cutter in the width direction.

5. A method for solving the problem of partial flanging of copper foil according to claim 4, characterized in that: The second copper foil cutter has a second alignment structure on both sides of the starting end thereof in the width direction provided with a cross positioning.

6. A method for solving the problem of partial flanging of copper foil according to claim 5, characterized in that: Both sides of the width direction of all the flattening protrusions of the special flattening roller are provided with a third alignment structure on both sides for cross positioning.

7. A method for solving the problem of partial flanging of copper foil according to claim 6, characterized in that: The first alignment structure and the corresponding second alignment structure are combined to form a cross positioning, and the third alignment structure and the corresponding second alignment structure are combined to form a cross positioning.

8. The method for solving the problem of partial flanging of copper foil according to claim 2, characterized in that: The first group of steel rollers consists of two identical steel rollers, one above the other, with a clearance between them of 100 to 110 μm; the second group of steel rollers consists of two identical steel rollers, one above the other, with a clearance between them of 90 to 100 μm; the third group of steel rollers consists of two identical steel rollers, one above the other, with a clearance between them of 75 to 90 μm; ensuring that the flange height of the copper foil after being punched by the first copper foil cutter is less than 30 μm.

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