A method for processing and molding a long strip product

Abstract

This invention discloses a method for processing and forming a long strip-shaped product. The product is laid out on a plate, which is divided along its length from front to back into a front positioning section, a product forming area, and a rear positioning section. The product forming area has the same length direction as the plate. The product forming area is further divided into multiple punching segments along the product's length. A front-end shape mold and a rear-end shape mold simultaneously punch both ends of the plate to remove the front and rear positioning sections, thus forming the outer contours of both ends of the product. A segmented shape mold forms the outer contours of both sides of the product in segments. While punching the previous segment, the segmented shape mold also punches a punching positioning hole in the next segment, ensuring accurate connection between the next and previous punching segments, avoiding misalignment at the connection points, and eliminating the cumulative error from multiple punching operations.

Description

Technical Field

[0001] This invention relates to the field of flexible circuit board manufacturing, and more specifically to a method for processing and forming elongated products. Background Technology

[0002] Some long, narrow products, such as flexible circuit boards, are too long. Due to the product's expansion and contraction and the limitations of the punching press tonnage, segmented punching is required during the punching process. This means multiple punching operations along the length of the product. For example... Figure 1 As shown, in the prior art, punching positioning holes 200 are provided on both sides of the width direction of each product 100 during typesetting, from which... Figure 2 The length direction of the punching die shown ( Figure 2 (Arrow direction) Feeding, the punching positioning hole 200 and the positioning pin 300 on the punching die are matched for positioning, which affects the product assembly utilization rate, and the expansion and contraction of extra-long products can easily cause the shape of the punched product to be like... Figure 2 and Figure 3 As shown, there is a punching misalignment of 500 at the joint of the die cutting edge 400. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a method for processing and forming long strip products, which mainly solves the problems of low plate utilization and easy misalignment during segmented punching of long strip products.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0005] A method for processing and forming a long strip-shaped product includes the following steps:

[0006] Step 1: Arrange the layout on the board. The board is divided into a front positioning part, a product forming area and a rear positioning part along the length direction from front to back. The front positioning part is provided with a front positioning hole and the rear positioning part is provided with a rear positioning hole. The length direction of the product arranged in the product forming area is the same as the length direction of the board. The product forming area is divided into multiple punching segments along the product length direction.

[0007] Step 2: According to the punching feed direction, the punching segments of the product forming area are sequentially the first punching segment, the second punching segment, the third punching segment, and so on. Each punching segment has a first punching positioning hole on both sides. The first punching positioning holes are arrayed along the product length direction on both sides of the product forming area. The first punching positioning holes are provided on both sides of the first punching segment.

[0008] Step 3: The front positioning part is provided with at least two front positioning holes, and the rear positioning part is provided with at least two rear positioning holes. The front positioning holes are positioned in conjunction with the positioning pins on the front end mold, and the rear positioning holes are positioned in conjunction with the positioning pins on the rear end mold. The front end mold and the rear end mold simultaneously punch the two ends of the plate body to remove the front positioning part and the rear positioning part, so that the outer contours of the two ends of the product are formed.

[0009] Step 4: Use a segmented shape mold to form the outer contour of the product on both sides in segments. The segmented shape mold is equipped with multiple positioning pins. When the segmented shape mold punches the first punched segment, the positioning pins on the segmented shape mold cooperate with the first punching positioning hole and the second punching positioning hole on the first punched segment for positioning. The segmented shape mold is equipped with a punch. While punching the first punched segment, the punch punches the second punched segment, so that a third punching positioning hole is formed on the second punched segment corresponding to the position of the second punching positioning hole.

[0010] Step 5: After completing step 4, continue feeding. The segmented shape mold punches the second punching segment. The positioning pin on the segmented shape mold cooperates with the first punching positioning hole and the third punching positioning hole on the second punching segment for positioning. At the same time as punching the second punching segment, the punch presses the third punching segment, so that the third punching positioning hole is formed on the third punching segment corresponding to the position of the second punching positioning hole.

[0011] Step 6: Repeat step 5 until the outer contours of both sides of the product are punched out.

[0012] Furthermore, the spacing between the products arranged in the product forming area is ≥1mm and ≤3mm.

[0013] Furthermore, the length of a single punching segment is ≥50mm and ≤200mm.

[0014] Furthermore, in addition to the first punching segment, the other punching segments are provided with auxiliary positioning holes on both sides at the corresponding second punching positioning hole positions. The auxiliary positioning holes are solid target positioning holes formed by the target punching machine. When punching the product forming area, after each punching segment is completed, the position of the third punching positioning hole on the next punching segment is compared with the position of the auxiliary positioning hole. The plate position is adjusted according to the offset.

[0015] Furthermore, the auxiliary positioning holes are located at the front ends on both sides of the punching segment to which they are located, and the first punching positioning holes are located at the rear ends on both sides of the punching segment to which they are located.

[0016] Furthermore, a ring target needs to be set at the positions of the first and second punching positioning holes on the plate. A target punching machine is used to identify and punch the inner ring of the ring target to form the first and second punching positioning holes.

[0017] Furthermore, the cutting edge adopts a rounded transition, and the length of the overlapping part of the die cutting edge between adjacent cutting segments is ≥0.5mm and ≤1mm.

[0018] The present invention has the following beneficial effects:

[0019] Compared with the traditional layout structure, the punching and positioning holes between products are eliminated, and punching and positioning holes are only set on the outermost side of the width direction of the panel, which greatly improves the utilization rate of the panel.

[0020] While punching the previous punching segment, a new punching positioning hole is punched on the next punching segment, and the hole formed by punching is used as the positioning hole when punching the punching segment. This reduces the cumulative error of multiple punchings and avoids the front and rear sections of the product shape from being misaligned.

[0021] Auxiliary positioning holes are set on the second punching section and subsequent punching sections. By comparing the auxiliary positioning holes, the position of the plate can be adjusted in time to improve the punching accuracy.

[0022] It can reduce the number of holes punched in the target and improve production efficiency.

[0023] It can process and shape extra-long products without being limited by product length.

[0024] The product is fed in whole sheets, eliminating the need for slit production and reducing production steps.

[0025] Segmented punching ensures high precision in connection, reduces product misalignment, and improves product yield.

[0026] It features built-in positioning correction to avoid cumulative errors caused by product punching and ensure product quality stability.

[0027] Long strip products are continuously fed and punched in sequence, eliminating the need for rotating the feeder and simplifying operation.

[0028] Smaller mold size reduces investment in large-tonnage punching equipment. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the existing die-cutting and layout structure;

[0030] Figure 2 This is a schematic diagram of a punching die used in existing technology;

[0031] Figure 3 This is a schematic diagram illustrating the misalignment of the product's shape caused by segmented punching technology.

[0032] Figure 4 yes Figure 3 Enlarged view of the misaligned connection point at point A in the middle.

[0033] Figure 5This is a schematic diagram of the punching and layout structure of the long strip product in this embodiment;

[0034] Figure 6 This is a schematic diagram of the product forming area obtained after punching away the front and rear positioning parts in this embodiment;

[0035] Figure 7 This is a schematic diagram of the product shape obtained after punching the first punching segment in this embodiment;

[0036] Figure 8 This is a schematic diagram of the product shape obtained after the second punching segment punching in this embodiment;

[0037] Figure 9 This is a schematic diagram of the front-end shape mold in this embodiment;

[0038] Figure 10 This is a schematic diagram of the segmented shape mold in this embodiment.

[0039] Labeling Explanation: 1. Product; 2. Front Positioning Part; 3. Product Forming Area; 4. Rear Positioning Part; 5. Positioning Pin; 21. Front Positioning Hole; 41. Rear Positioning Hole; 31. First Punching Positioning Hole; 32. Second Punching Positioning Hole; 33. First Punching Segment; 34. Second Punching Segment; 35. Third Punching Segment; 36. Auxiliary Positioning Hole; 37. Die Punching Edge; 38. Overlapping Part of the Die; 39. Punch. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0041] The "front" and "rear" orientations mentioned in this article refer to the front end of the feeding direction during punching as the front position and the rear end of the feeding direction as the rear position.

[0042] A method for processing and forming a long strip-shaped product includes the following steps:

[0043] Step 1: Arrange the layout on the board. The board is divided into a front positioning part 2, a product forming area 3 and a rear positioning part 4 along the length direction from front to back. The front positioning part 2 is provided with a front positioning hole 21 and the rear positioning part 4 is provided with a rear positioning hole 41. The length direction of the product 1 arranged in the product forming area 3 is the same as the length direction of the board. The product forming area 3 is divided into multiple punching segments along the length direction of the product 1.

[0044] Step 2: According to the punching feeding direction, the punching segments of the product forming area 3 are sequentially the first punching segment 33, the second punching segment 34, the third punching segment 35, etc. Each punching segment is provided with a first punching positioning hole 31 on both sides. The first punching positioning holes 31 are arrayed along the length direction of the product 1 on both sides of the product forming area 3. The first punching segment 33 is provided with a second punching positioning hole 32 on both sides.

[0045] Step 3: The front positioning part 2 is provided with at least two front positioning holes 21, and the rear positioning part 4 is provided with at least two rear positioning holes 41. The front positioning holes 21 and Figure 9 The positioning pin 5 on the front-end mold is used for positioning, and the rear positioning hole 41 is used for positioning with the positioning pin 5 on the rear-end mold. The front-end mold and the rear-end mold simultaneously punch both ends of the plate to remove the front positioning part 2 and the rear positioning part 4, so that the outer contours of both ends of the product 1 are formed.

[0046] Step 4: The outer contours of both sides of product 1 are segmented and formed using a segmented mold. The segmented mold is provided with multiple positioning pins 5. When the segmented mold punches the first punching segment 33, the positioning pins 5 on the segmented mold cooperate with the first punching positioning hole 31 and the second punching positioning hole 32 on the first punching segment 33 for positioning. The segmented mold is provided with a punch 39. While punching the first punching segment 33, the punch 39 punches the second punching segment 34, so that a third punching positioning hole is formed on the second punching segment 34 at the position corresponding to the second punching positioning hole 32 (that is, the third punching positioning hole is punched at the position of the auxiliary positioning hole 36).

[0047] Step 5: After completing step 4, continue feeding. The segmented shape mold punches the second punching segment 34. The positioning pin 5 on the segmented shape mold cooperates with the first punching positioning hole 31 and the third punching positioning hole on the second punching segment 34 for positioning. At the same time as punching the second punching segment 34, the punch 39 punches the third punching segment 35, so that the third punching positioning hole is formed on the third punching segment 35 at the position corresponding to the second punching positioning hole 32.

[0048] Step 6: Repeat step 5 until the outer contours of both sides of product 1 are punched.

[0049] Since all punching segments are punched using the same segmental shape mold, the array of first punching positioning holes 31 on both sides of the product forming area 3 along the length of product 1 should be understood as meaning that the number and position of the first punching positioning holes 31 on all punching segments are the same. The attached figure shows an example where only one first punching positioning hole 31 is provided on one side of each punching segment. These first punching positioning holes 31 are arranged at equal intervals, with the interval being the length of a single punching segment. In other embodiments, the number of first punching positioning holes 31 on each side of a single punching segment can also be two or more.

[0050] Furthermore, the spacing between the products 1 arranged in the product forming area 3 is ≥1mm and ≤3mm.

[0051] Furthermore, the length of a single punching segment is ≥50mm and ≤200mm.

[0052] Furthermore, in addition to the first punching segment 33, the other punching segments are provided with auxiliary positioning holes 36 on both sides at the corresponding second punching positioning hole 32 positions. The auxiliary positioning hole 36 is a solid target positioning hole formed by a target punching machine. When punching the product forming area 3, after each punching segment is completed, the position of the third punching positioning hole on the next punching segment is compared with that of the auxiliary positioning hole 36 to see if there is any offset. The position of the plate is adjusted according to the offset.

[0053] Furthermore, the auxiliary positioning holes 36 are located at the front ends on both sides of the punching segment, and the first punching positioning holes 31 are located at the rear ends on both sides of the punching segment. That is, the third punching positioning hole is closer to the preceding punching segment, and the first punching positioning hole is closer to the following punching segment, maximizing the positioning distance between the third and first punching positioning holes. This helps keep the two punching segments aligned, thus requiring only one first punching positioning hole 31 and one third punching positioning hole on each side of a single punching segment to achieve positioning with the segment's outer mold. The third punching positioning hole's proximity to the preceding punching segment also helps control the size of the segment's outer mold.

[0054] Furthermore, an annular target needs to be set at the position of the first punching positioning hole 31 on the plate body. A target punching machine is used to identify and punch the inner circle of the annular target to form the first punching positioning hole 31.

[0055] Furthermore, the cutting edge adopts a rounded transition, and the length of the overlapping part 38 of the die cutting edge between adjacent cutting segments is ≥0.5mm and ≤1mm.

[0056] The above-mentioned processing and forming method for long strip products is based on the following punching and layout structure.

[0057] like Figures 5 to 10As shown, the punching and layout structure includes a board (e.g., a substrate of a flexible circuit board). The board is divided into a front positioning part 2, a product forming area 3, and a rear positioning part 4 along its length from front to back. The front positioning part 2 is provided with a front positioning hole 21, and the rear positioning part 4 is provided with a rear positioning hole 41. The length direction of the product 1 laid out in the product forming area 3 is the same as the length direction of the board. The product forming area 3 is divided into multiple punching segments along the length direction of the product 1. Each punching segment is provided with a first punching positioning hole 31 on both sides. The first punching positioning holes 31 are arranged along the length direction of the product 1 on both sides of the product forming area 3. The punching segment closest to the front positioning part 2 (i.e., the first punching segment 33) is provided with a second punching positioning hole 32 on both sides.

[0058] Compared to traditional layout structures, the punching positioning holes between products 1 are eliminated. In this embodiment, the spacing between products 1 arranged in the product forming area 3 is preferably ≥1mm and ≤3mm. Furthermore, the length of a single punching segment is preferably ≥50mm and ≤200mm, and the array spacing of the first punching positioning holes 31 is the same as the length of a single punching segment. The layout structure provided in this embodiment only sets punching positioning holes on the outermost side of the width direction of the panel, which can greatly improve the utilization rate of the panel assembly.

[0059] Specifically, the product forming area 3 is arranged sequentially from front to back along the length of product 1 as a first punching segment 33, a second punching segment 34, a third punching segment 35, and so on. The first punching segment 33 has a first punching positioning hole 31 and a second punching positioning hole 32 on both sides. The remaining punching segments have a first punching positioning hole 31 on both sides and an auxiliary positioning hole 36 at the corresponding position of the second punching positioning hole 32. In the figure, only two first punching positioning holes 31 and two second punching positioning holes 32 are provided on the first punching segment 33, but the number of first punching positioning holes 31 and second punching positioning holes 32 is not limited to this and can be appropriately increased. Correspondingly, the number of first punching positioning holes 31 and auxiliary positioning holes 36 on the remaining punching segments can also be appropriately increased.

[0060] In this embodiment, preferably, both the first punching positioning hole 31 and the second punching positioning hole 32 are annular target positioning holes, and an automatic target punching machine is used to identify the inner circle of the annular target positioning hole for punching. The auxiliary positioning hole 36 is a solid target positioning hole. In other embodiments, the first punching positioning hole 31 and the second punching positioning hole 32 can also be ordinary hollow holes, formed using a laser blanking machine. Similarly, the front positioning hole and the rear positioning hole can be annular target positioning holes or ordinary hollow holes.

[0061] During processing, the front and rear outline molds are first used to shape the outer contours of both ends of product 1. Simultaneously, the waste material (front positioning part 2 and rear positioning part 4) at both ends of the plate is removed, resulting in the following: Figure 6 The product forming area 3 shown has a structure where both ends are die-cutting blades 37, and then... Figure 10 The segmented shape mold shown forms the outer contour of product 1 in segments on both sides. After the segmented shape mold punches the first punched segment 33, the shape of product 1 is as follows: Figure 7 As shown, after continuing to punch the second punching segment 34, the product 1 has the following shape. Figure 8 As shown. The punching joint (the part connecting the two punching segments) adopts a rounded transition, and the length of the overlapping part 38 is preferably 0.5mm to 1mm.

[0062] The segmented shape mold is equipped with a positioning pin 5. When punching the first punched segment 33, the positioning pin 5 cooperates with the first punching positioning hole 31 and the second punching positioning hole 32 for positioning. At the same time as punching the first punched segment 33, the auxiliary positioning hole 36 on the second punched segment 34 is punched. After being punched by the punch of the segmented shape mold, the auxiliary positioning hole 36 is changed from a solid target positioning hole to a hollow hole (e.g., ...). Figure 7 This serves as the third punching positioning hole, which, when punching the second punching segment 34, engages with the positioning pin 5 on the segment shape mold for positioning (the positioning pin 5, originally paired with the second positioning hole, now engages with the hollow hole). Similarly, the auxiliary positioning holes 36 on the remaining punching segments are also punched into hollow holes simultaneously with the previous punching segment, and engage with the positioning pin 5 on the segment shape mold for positioning during the punching of that segment. This ensures higher connection accuracy between adjacent punched sections of product 1, preventing misalignment between the two sections. If misalignment occurs during the punching of product 1, the auxiliary positioning hole 36 will be misaligned with the punched hollow hole (the third punching positioning hole), making it easy to detect and adjust promptly.

[0063] The auxiliary positioning holes 36 are located at the front ends on both sides of their respective punching segments, while the first punching positioning holes 31 are located at the rear ends on both sides of their respective punching segments. The auxiliary positioning holes 36 are located at the front ends on both sides of their respective punching segments, meaning they are close to the preceding punching segment. This allows for simultaneous punching of the auxiliary positioning holes 36 on the following punching segment while the preceding segment is being punched, ensuring a higher relative precision between the hollow holes formed on the following punching segment and the product 1 formed by the preceding punching segment. For example... Figure 7 While the first punching segment 33 is being punched, the positions of the two auxiliary positioning holes 36 on the second punching segment 34 are punched into hollow holes.

[0064] The front positioning part 2 is provided with at least two front positioning holes 21, for example... Figure 9The front-end mold is positioned as shown; the rear positioning part 4 is provided with at least two rear positioning holes 41 for positioning the rear-end mold. Preferably, as follows... Figure 5 The product forming area 3 has multiple products 1 arranged in a row. The front positioning part 2 is provided with a front positioning hole 21 corresponding to each product 1, and the rear positioning part 4 is provided with a rear positioning hole 41 corresponding to each product 1, which has the function of preventing mistakes.

[0065] The punching and layout structure features of the elongated product 1 provided in this embodiment are as follows:

[0066] 1. The spacing between product panels is preferably 1-3mm. Instead of the positioning holes between panels in the traditional layout structure, punching positioning holes are only set on the outermost side of the panel. This can greatly improve the utilization rate of material panel layout.

[0067] 2. The punching positioning holes are arranged according to the punching segment punching array in the length direction. It is preferred to set 2 punching positioning holes on one side of each segment, and each segment array is preferably 50-200mm.

[0068] 3. The positioning holes are punched by the target punching machine and cut by the die. The target punching machine only punches the ring-shaped target positioning holes. The solid target positioning holes do not need to be punched into hollow holes during the subsequent die cutting process.

[0069] 4. The automatic target punching machine is set to punch holes in the inner circle of the annular target positioning hole. This avoids the solid target positioning hole being punched into shape by the automatic target punching machine. If a laser blanking machine is used for punching, the first punching positioning hole 31 and the second punching positioning hole 32 do not need to be set as annular target positioning holes.

[0070] Although this embodiment uses a flexible circuit board as an example for illustration, the punching and layout structure is also applicable to other extra-long products, and the scope of the present invention is not limited to the layout structure of flexible circuit boards.

[0071] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features therein. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Therefore, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

Claims

1. A method for processing and forming a long strip-shaped product, characterized in that, Includes the following steps: Step 1: Arrange the layout on the board. The board is divided into a front positioning part, a product forming area and a rear positioning part from front to back along the length direction. The length direction of the product arranged in the product forming area is the same as the length direction of the board. The product forming area is divided into multiple punching segments along the product length direction. Step 2: According to the punching feed direction, the punching segments of the product forming area are sequentially the first punching segment, the second punching segment, the third punching segment, and so on. Each punching segment has a first punching positioning hole on both sides. The first punching positioning holes are arrayed along the product length direction on both sides of the product forming area. The first punching positioning holes are provided on both sides of the first punching segment. Step 3: Use the front and rear profile molds to punch both ends of the plate at the same time to remove the front and rear positioning parts, so that the outer contours of the product at both ends are formed. Step 4: Use a segmented shape mold to form the outer contour of the product on both sides in segments. The segmented shape mold is equipped with multiple positioning pins. When the segmented shape mold punches the first punched segment, the positioning pins on the segmented shape mold cooperate with the first punching positioning hole and the second punching positioning hole on the first punched segment for positioning. The segmented shape mold is equipped with a punch. While punching the first punched segment, the punch punches the second punched segment, so that a third punching positioning hole is formed on the second punched segment corresponding to the position of the second punching positioning hole. Step 5: After completing step 4, continue feeding. The segmented shape mold punches the second punching segment. The positioning pin on the segmented shape mold cooperates with the first punching positioning hole and the third punching positioning hole on the second punching segment for positioning. At the same time as punching the second punching segment, the punch presses the third punching segment, so that the third punching positioning hole is formed on the third punching segment corresponding to the position of the second punching positioning hole. Step 6: Repeat step 5 until the outer contours of both sides of the product are punched out.

2. The processing and forming method for elongated products according to claim 1, characterized in that: The spacing between products arranged in the product forming area is ≥1mm and ≤3mm.

3. The method for processing and forming a long strip-shaped product according to claim 1, characterized in that: The length of a single punching segment is ≥50mm and ≤200mm.

4. The method for processing and forming a long strip-shaped product according to claim 1, characterized in that: In addition to the first punching segment, the other punching segments have auxiliary positioning holes on both sides at the corresponding second punching positioning hole positions. The auxiliary positioning holes are solid target positioning holes formed by the target punching machine. When punching the product forming area, after each punching segment is completed, the position of the third punching positioning hole on the next punching segment is compared with the position of the auxiliary positioning hole. The position of the plate is adjusted according to the offset.

5. The method for processing and forming a long strip-shaped product according to claim 4, characterized in that: The auxiliary positioning holes are located at the front ends on both sides of the punching segment to which they are located, and the first punching positioning holes are located at the rear ends on both sides of the punching segment to which they are located.

6. The method for processing and forming a long strip-shaped product according to claim 1, characterized in that: A ring target is set at the positions of the first and second punching positioning holes on the plate. A target punching machine is used to identify and punch the inner ring of the ring target to form the first and second punching positioning holes.

7. The method for processing and forming a long strip-shaped product according to claim 1, characterized in that: The cutting edge of the punching cutter adopts a rounded transition, and the length of the overlapping part of the die cutter between adjacent punching sections is ≥0.5mm and ≤1mm.

8. The method for processing and forming a long strip-shaped product according to claim 1, characterized in that: The front positioning part is provided with at least two front positioning holes, and the rear positioning part is provided with at least two rear positioning holes. The front positioning holes are positioned in conjunction with the positioning pins on the front end mold, and the rear positioning holes are positioned in conjunction with the positioning pins on the rear end mold.

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