Special-shaped conductive copper foil composite assembly and die-cutting knife die thereof

Abstract

The utility model relates to a special-shaped conductive copper foil composite assembly, which is provided with a strip-shaped conductive copper foil, first release films are respectively compounded at two ends of one surface of the strip-shaped conductive copper foil, and first handle parts protruding out of one side of the strip-shaped conductive copper foil are respectively formed at the inner ends of the two first release films; a second release film is compounded in the middle of the other surface of the strip-shaped conductive copper foil in a region which is not overlapped with the projection regions of the two first release films, and a second handle part protruding out of one side of the strip-shaped conductive copper foil is also formed at one end of the second release film. According to the conductive copper foil assembly, the structure and the die-cutting knife die are adopted, the shape and the structure meet the use requirements of special occasions, conductive copper foil raw materials are asynchronously cut into the specific width by accurately controlling the step pitch of the die and the advancing speed of the material belt, the conductive copper foil raw materials are arranged at the designated positions of the material belt at intervals, the raw materials are saved, and the product precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of die-cutting components for electronic products, in particular to a special-shaped conductive copper foil composite component and a die-cutting die thereof. Background Art

[0002] Die-cut components are widely used in electronic products and devices. Some electronic devices require composite components including conductive copper foil to simultaneously meet component bonding and electrical conductivity requirements. Due to the unique internal structure of the device, the shape of these conductive copper foil composite components also has corresponding characteristics. In some cases, special-shaped conductive copper foil composite components with unique shapes and hierarchical structures are required, and high precision in form and position characteristics is required. Summary of the Invention

[0003] The purpose of the utility model is to provide a special-shaped conductive copper foil composite component to meet the use needs of some electronic equipment.

[0004] The technical solution adopted by the utility model is: a special-shaped conductive copper foil composite component, which has a strip of conductive copper foil, and a first release film is respectively compounded at both ends of one side of the strip of conductive copper foil, and the inner ends of the two first release films are respectively formed with a first handle portion protruding from one side of the strip of conductive copper foil; a second release film is compounded in the middle area of ​​the other side of the strip of conductive copper foil that does not overlap with the projected areas of the two first release films, and one end of the second release film is also formed with a second handle portion protruding from one side of the strip of conductive copper foil.

[0005] The first release film and the second release film are both L-shaped, and the two first release films are symmetrically arranged relative to the center line of the strip-shaped conductive copper foil.

[0006] The first handle portion and the second handle portion are located on the same side of the strip-shaped conductive copper foil.

[0007] The upper and lower surfaces of the special-shaped conductive copper foil composite component are respectively compounded with a finished release paper and a finished protective film that completely covers the component.

[0008] The utility model also provides a die-cutting die for the above-mentioned special-shaped conductive copper foil composite assembly, which includes a first circular die-cutting roller group, a second asynchronous die-cutting roller group, a third circular die-cutting roller group, and a fourth circular die-cutting roller group, wherein the knife roller of the first circular die-cutting roller group has a first release film inner end contour line blade for forming the inner end contour line of the first release film, and the spacing between adjacent first release film inner end contour line blades is ≤1mm; the knife roller of the second asynchronous die-cutting roller group has an asynchronous slitting blade arranged parallel to the knife roller axis; the blade of the third circular die-cutting roller group includes a first closed blade that matches the contour line of the strip-shaped conductive copper foil, and a blade for the remaining contour line of the first release film corresponding to the remaining contour line of the first release film, the blade depth of the first closed blade is divided into two parts, and the blade depth of the portion overlapping with the contour line of the first release film is greater than the blade depth of the non-overlapping portion in the middle of the two parallel parts; the knife roller of the fourth circular die-cutting roller group has a second closed blade that forms the contour line of the second release film.

[0009] The conductive copper foil assembly of the utility model adopts the above-mentioned structure and the above-mentioned die-cutting die, and its shape and structure meet the requirements of use in special occasions. Moreover, by accurately controlling the die step distance and the material strip travel speed, the conductive copper foil raw material is asynchronously cut into specific widths and arranged at intervals at specified positions of the material strip, thereby saving raw materials. At the same time, by simultaneously punching the contours of the L-shaped product release films at different levels in batches, the production process is optimized, the product precision is improved, the defect rate is reduced, and the material utilization rate is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the exploded structure of the special-shaped conductive copper foil composite component of the utility model;

[0011] Figure 2 It is a flow chart of the utility model process;

[0012] Figure 3-1 、 Figure 3-2 、 Figure 3-3 、 Figure 3-4 、 Figure 3-5 Schematic diagrams of the blade deployment and die-cutting effect of the first circular die-cutting roller group, the second asynchronous die-cutting roller group, the third circular die-cutting roller group, the fourth circular die-cutting roller group, and the fifth circular die-cutting roller group used in the process of the utility model;

[0013] Figure 3-6 yes Figure 3-1 to Figure 3-4 Schematic diagram after superimposing the die-cutting effect;

[0014] Figure 4 It is a schematic diagram of the primary block of conductive copper foil cut asynchronously in the present invention. DETAILED DESCRIPTION

[0015] The utility model describes a production process for a special-shaped conductive copper foil composite component, such as Figure 1 As shown, the special-shaped conductive copper foil composite assembly comprises a strip of conductive copper foil 1, with first release films 2 respectively compounded at both ends of the lower surface of the strip of conductive copper foil 1, and first handle portions 21 protruding from one side of the strip of conductive copper foil 1 are respectively formed at the inner ends of the two first release films 2; a second release film 3 is compounded in the middle of the upper surface of the strip of conductive copper foil 1 in an area that does not overlap with the projection areas of the two first release films 2, and a second handle portion 31 is also formed at one end of the second release film 3 protruding from one side of the strip of conductive copper foil. In this embodiment, the second handle portion 31 is located on the same side as the first handle portion 21. A finished release paper 4 and a finished protective film 5 that completely cover the assembly are also compounded on the upper and lower surfaces of the special-shaped conductive copper foil composite assembly.

[0016] Combine Figure 2 、 Figure 3-1 to Figure 3-6 As shown, the special-shaped conductive copper foil composite component is produced using a high-speed rotary die-cutting machine, and its production process includes the following steps:

[0017] Step a: Laminating the first release film strip L1 onto the first base film strip T1, performing a first die-cutting operation using a first circular die-cutting roller assembly M1, and forming first release film inner end contour lines M101 of the inner ends of two first release films 2 in a plurality of special-shaped conductive copper foil composite assemblies on the first release film strip L1, wherein the first release film inner end contour lines M101 are parallel to the running direction of the strip;

[0018] Step b, the conductive copper foil strip D1 is subjected to a second die-cutting process, namely asynchronous die-cutting, by the second asynchronous die-cutting roller group M2, the conductive copper foil strip D1 is peeled off from the film D11 after asynchronous die-cutting, and the formed strip-shaped conductive copper foil primary material blocks 11 are arranged at equal intervals on the first release film strip L1 formed with the inner end contour line M101 of the first release film, and combined with the conductive copper foil strip D1. Figure 4 As shown, the length direction of each strip-shaped conductive copper foil primary material block 11 is perpendicular to the inner end contour line M101 of the first release film and spans two parallel inner end contour lines M101 of the first release film;

[0019] Step c: After laminating a layer of process protective film material strip G1 on the composite material strip, the composite material strip is subjected to a third die-cutting by the third circular die-cutting roller group M3 to form a complete strip-shaped conductive copper foil contour line M301 and a first release film remaining contour line M302. Except for the first handle portion contour line, the remaining contour lines M302 of the first release film all coincide with the strip-shaped conductive copper foil contour line M301 (i.e. Figure 3-3The remaining outline M302 of the first release film and the inner end outline M101 of the first release film formed by the first die-cutting process just form the complete outline of the first release film. After the third die-cutting process, waste is removed by first peeling off the waste outside the frame of the first release film strip, the waste outside the frame of the conductive copper foil, and the waste outside the frame of the process protective film strip. Then, the waste process protective film inside the frame is removed using the waste removal tape P1. The main material strip formed at this time is, from bottom to top, the following: the first base film strip T1, the first release films 2 arranged at intervals on the first base film strip T1, and the strip-shaped conductive copper foil 1 on the first release film 2. The first release film 2 has a first handle portion 21 protruding from the strip-shaped conductive copper foil 1.

[0020] Step d: In front of the main material strip in the running direction, in the opposite direction, the second release film strip L2 (after stripping off its own film L21) is laminated on the second base film strip T2, and then the fourth circular die-cutting roller group M4 is used to perform a fourth die-cutting to form a complete outline M401 of the second release film, and the second release film strip waste outside the outline frame is removed. The second release film strip is then flipped by the lower roller of the fourth circular die-cutting roller group M4 and laminated with the main material strip, so that the formed second release film 3 is aligned and laminated to the upper surface of the strip-shaped conductive copper foil 1, and the second release film 3 is located in the area between the two first release films 2;

[0021] Step e: first peel off the second base film strip T2 from the top, compound a transition transfer film strip G2 (peel off the self-contained film), then peel off the first base film strip T1 from the bottom, and compound the finished protective film strip B1 and the third base film strip T3 in sequence below; then peel off the transition transfer film strip G2 from the top, and then compound the finished release paper strip L3 from the top, that is, transfer the formed conductive copper foil composite component between the finished release paper strip L3 and the finished protective film strip B1, and then separate the finished product from the third base film strip after slitting by the fifth circular knife die-cutting roller group. The finished product is from bottom to top: finished protective film 5, the first release film 2 arranged at intervals, the strip-shaped conductive copper foil 1, the second release film 3 and the finished release paper 4, and a plurality of special-shaped conductive copper foil composite components are covered between each piece of finished protective film 5 and the finished release paper 4;

[0022] Furthermore, in step a, the knife roller of the first circular die-cutting roller group M1 has a first release film inner end contour line blade R101 corresponding to the first release film inner end contour line M101, and its die-cutting depth just cuts through the first release film material strip L1, and the spacing between adjacent first release film inner end contour line blades R101 is ≤1mm. In this embodiment, a total of 20 groups of first release film inner end contour line blades R101 are provided; and the knife roller of the first circular die-cutting roller group M1 also has three first positioning mark line blades R102, that is, three first positioning mark lines M102 are formed on the first base film material strip, namely, first positioning mark line one, first positioning mark line two, and first positioning mark line three;

[0023] In step b, the outer dimensions of the strip-shaped conductive copper foil primary material block 11 formed by asynchronous die-cutting are slightly larger than the strip-shaped conductive copper foil 1 in the finished assembly. The knife roller of the second asynchronous die-cutting roller group M2 has asynchronous slitting blades R201 arranged parallel to the knife roller axis, and the number of the asynchronous slitting blades R201 is also 20, and a second positioning mark line blade R202 is provided corresponding to one of the first positioning mark line blades ( Figure 3-2 Middle 2# marking line blade);

[0024] In step c, the blade of the third circular die-cutting roller group M3 includes a first closed blade R301 that coincides with the contour line M301 of the strip-shaped conductive copper foil, a first release film remaining contour line blade R302 corresponding to the first release film remaining contour line M302, and a third positioning mark line blade R303 corresponding to the second of the first positioning mark line blades, wherein the blade depth of the first closed blade R301 is divided into two parts, the red part, i.e., the blade depth of the part that coincides with the contour line of the first release film, is just enough to cut the first release film strip L1, and the blade depth of the two parallel green parts, i.e., the non-overlapping parts in the middle, is just enough to cut the conductive copper foil primary material block 11, i.e., the blade depth of the green part is less than the blade depth of the red part; the contour line of the red part coincides with the inner end contour line M101 of the first release film formed by the first die-cutting (i.e. Figure 3-1 The middle magenta outline) just forms the complete outline of the first release film; when removing waste after the third die-cutting, first peel off the waste outside the frame of the first release film tape, the conductive copper foil tape and the process protective film tape, and then remove the waste inside the frame through the waste removal tape P1.

[0025] In step d, the knife roller of the fourth circular die-cutting roller group M4 has a second closed blade R401 corresponding to the second release film contour line M401 and a fourth positioning mark line blade R402 corresponding to the third of the first positioning mark line blades.

[0026] In step e, the fifth circular die-cutting roller group M5 is provided with a slitting blade R501 parallel to the axial direction of the roller and a fifth positioning mark line blade R502.

[0027] The conductive copper foil assembly of the utility model adopts the above-mentioned structure and the above-mentioned die-cutting die, and its shape and structure meet the requirements of use in special occasions. Moreover, by accurately controlling the die step distance and the material strip travel speed, the conductive copper foil raw material is asynchronously cut into specific widths and arranged at intervals at specified positions of the material strip, thereby saving raw materials. At the same time, by simultaneously punching the contours of the L-shaped product release films at different levels in batches, the production process is optimized, the product precision is improved, the defect rate is reduced, and the material utilization rate is effectively improved.

[0028] The above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, but the present invention is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and essence of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A special-shaped conductive copper foil composite component, characterized by: The special-shaped conductive copper foil composite assembly comprises a strip of conductive copper foil, with first release films respectively compounded at both ends of one side of the strip of conductive copper foil, and first handle portions protruding from one side of the strip of conductive copper foil are respectively formed at the inner ends of the two first release films; a second release film is compounded in the middle of the other side of the strip of conductive copper foil in an area that does not overlap with the projected areas of the two first release films, and a second handle portion is also formed at one end of the second release film protruding from one side of the strip of conductive copper foil.

2. The special-shaped conductive copper foil composite assembly according to claim 1, characterized in that: The first release film and the second release film are both L-shaped, and the two first release films are symmetrically arranged relative to the center line of the strip-shaped conductive copper foil.

3. The special-shaped conductive copper foil composite assembly according to claim 1, characterized in that: The first handle portion and the second handle portion are located on the same side of the strip-shaped conductive copper foil.

4. The special-shaped conductive copper foil composite assembly according to claim 1, characterized in that: The upper and lower surfaces of the special-shaped conductive copper foil composite component are respectively compounded with a finished release paper and a finished protective film that completely covers the component.

5. A die-cutting die for producing the special-shaped conductive copper foil composite assembly according to any one of claims 1 to 4, characterized in that: The die-cutting die includes a first circular die-cutting roller group, a second asynchronous die-cutting roller group, a third circular die-cutting roller group, and a fourth circular die-cutting roller group, wherein the knife roller of the first circular die-cutting roller group has a first release film inner end contour line blade for forming the inner end contour line of the first release film, and the spacing between adjacent first release film inner end contour line blades is ≤1mm; the knife roller of the second asynchronous die-cutting roller group has an asynchronous slitting blade arranged parallel to the knife roller axis; the blade of the third circular die-cutting roller group includes a first closed blade that coincides with the contour line of the strip conductive copper foil, and a blade for the remaining contour line of the first release film corresponding to the remaining contour line of the first release film, the blade depth of the first closed blade is divided into two parts, and the blade depth of the part overlapping with the contour line of the first release film is greater than the blade depth of the non-overlapping part in the middle of the two parallel parts; the knife roller of the fourth circular die-cutting roller group has a second closed blade that forms the contour line of the second release film.

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