CN-122002706-A - Circular knife assembly for preparing FDC flexible circuit board

CN122002706ACN 122002706 ACN122002706 ACN 122002706ACN-122002706-A

Abstract

The invention discloses a circular knife assembly for preparing an FDC flexible circuit board, which relates to the technical field of flexible circuit board processing equipment, wherein the circular knife assembly for preparing the FDC flexible circuit board comprises a circular knife roller and a circular knife blade, the circular knife blade is arranged on the outer peripheral surface of the circular knife roller and comprises two edge sections which are arranged at intervals, the two edge sections are arranged side by side, one sides of the two edge sections facing each other are first knife surfaces, one sides of the two edge sections facing each other are second knife surfaces, the included angle between the perpendicular line between the tip of the edge section and the center of the circular knife roller and the first knife surface is alpha, the included angle between the tip of the edge section and the center of the circular knife roller and the included angle between the tip of the edge section and the second knife surface are beta, and the included angle alpha is more than or equal to 0 DEG and less than or equal to 2.2 DEG, and 24.1 DEG beta is less than or equal to 30.3 deg. The technical scheme provided by the invention reduces the production and manufacturing cost of the flexible circuit board.

Inventors

FAN QIUSHI
FAN QINHAI
Ou Tianyu
LI CHENGHUI
ZHENG RONG
HUANG YUYING

Assignees

深圳市益达兴科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260330

Claims (10)

1. A circular knife assembly for preparing an FDC flexible circuit board, comprising: Circular knife roll, and The circular knife blade comprises two knife edge sections arranged at intervals, the two knife edge sections are arranged side by side, one side of each knife edge section facing each other is a first knife face, one side of each knife edge section facing away from each other is a second knife face, the included angle between the perpendicular line between the knife tip of the knife edge section and the center of the circular knife roll shaft and the first knife face is alpha, the included angle between the perpendicular line between the knife tip of the knife edge section and the center of the circular knife roll shaft and the included angle between the perpendicular line between the knife tip and the center of the second knife face are beta, alpha is more than or equal to 0 degree and less than or equal to 2.2 degrees, and beta is more than or equal to 24.1 degrees and less than or equal to 30.3 degrees.
2. The circular knife assembly for producing an FDC flexible circuit board according to claim 1, wherein 0 ° - α -1.7 °.
3. The circular knife assembly for producing an FDC flexible circuit board according to claim 2, wherein β is 24.6 ° or less and 28.2 °.
4. The circular knife assembly for preparing the FDC flexible circuit board according to claim 3, wherein the width between the knife tips of the two blade sections is w 1 ,0.3mm≤w 1 -0.5 mm.
5. The circular knife assembly for preparing the FDC flexible circuit board according to claim 3, wherein two blade sections are arranged at intervals to form a cutting groove, and the depth of the cutting groove along the height direction of the circular knife blade is h, and h is more than or equal to 0.26mm and less than or equal to 0.37mm.
6. The circular knife assembly for producing an FDC flexible circuit board according to claim 5, wherein the cutting grooves have a trapezoidal cross section.
7. The circular knife assembly for producing an FDC flexible circuit board according to claim 1, wherein the maximum thickness of the blade section is w 2 ,0.11mm≤w 2 ∈0.18mm.
8. The circular knife assembly for producing an FDC flexible wiring board according to any one of claims 1 to 7, wherein said circular knife blade further comprises a connecting section connected to an outer peripheral wall of said circular knife roller, both of said blade sections being connected to a side of said connecting section facing away from said circular knife roller.
9. The circular knife assembly for producing the FDC flexible circuit board according to claim 8, wherein the sum of the heights of the connecting section and the cutting edge section along the height direction of the circular knife blade is H, and H is more than or equal to 1.1mm and less than or equal to 1.3mm.
10. The circular knife assembly for producing an FDC flexible wiring board according to claim 1, wherein the circular knife blade extends in an S-shape or in a straight line shape.

Description

Circular knife assembly for preparing FDC flexible circuit board Technical Field The invention relates to the technical field of flexible circuit board processing equipment, in particular to a circular knife assembly for preparing an FDC flexible circuit board. Background The traditional FPC flexible circuit board is formed by processing in an etching mode, so that metal in the flexible circuit board and etching liquid generate chemical reaction, chemical waste is generated, heavy metal pollution can be caused if the metal is directly discharged, the metal in the chemical waste is wasted, but if the metal in the chemical waste is recycled, higher cost is required to be consumed for recycling and treating pollution discharge, and the production and manufacturing cost of the flexible circuit board is increased. Disclosure of Invention The invention mainly aims to provide a circular knife assembly for preparing an FDC flexible circuit board, which aims to reduce the production and manufacturing cost of the flexible circuit board. In order to achieve the above object, the present invention provides a circular knife assembly for preparing an FDC flexible circuit board, comprising: Circular knife roll, and The circular knife blade comprises two knife edge sections arranged at intervals, the two knife edge sections are arranged side by side, one side of each knife edge section facing each other is a first knife face, one side of each knife edge section facing away from each other is a second knife face, the included angle between the perpendicular line between the knife tip of the knife edge section and the center of the circular knife roll shaft and the first knife face is alpha, the included angle between the perpendicular line between the knife tip of the knife edge section and the center of the circular knife roll shaft and the included angle between the perpendicular line between the knife tip and the center of the second knife face are beta, alpha is more than or equal to 0 degree and less than or equal to 2.2 degrees, and beta is more than or equal to 24.1 degrees and less than or equal to 30.3 degrees. In one embodiment, 0≤α≤1.7 °. In one embodiment, 24.6. Ltoreq.β≤28.2. In one embodiment, the width between the tips of two of the blade sections is w 1,0.3mm≤w1 mm or less. In one embodiment, two blade sections are arranged at intervals to form a cutting groove, and the depth of the cutting groove along the height direction of the circular blade is h, wherein h is more than or equal to 0.26mm and less than or equal to 0.37mm. In one embodiment, the cross section of the cutting groove is arranged in a trapezoid shape. In one embodiment, the maximum thickness of the blade segment is w 2,0.11mm≤w2 +.0.18 mm. In an embodiment, the circular blade further comprises a connecting section, wherein the connecting section is connected to the peripheral wall of the circular knife roll, and the two cutting edge sections are connected to one side, away from the circular knife roll, of the connecting section. In one embodiment, the sum of the heights of the connecting section and the cutting edge section along the height direction of the circular blade is H, and H is 1.1 mm-1.3 mm. In one embodiment, the circular blade extends in an S-shape or in a straight line. The circular knife assembly for preparing the FDC flexible circuit board comprises a circular knife roller and a circular knife blade, wherein the circular knife blade is arranged on the outer peripheral surface of the circular knife roller, the circular knife blade comprises two knife edge sections which are arranged at intervals, and the two knife edge sections are arranged side by side, so that in the process that the circular knife roller rotates to drive the circular knife blade to move, the knife edge sections on the circular knife blade can cut a flexible circuit board such as a conductive substrate, a protective film and the like and accessories thereof, and thus the flexible circuit board with a preset shape is processed. Further, alpha is more than or equal to 0 degree and less than or equal to 2.2 degrees; it can be understood that in the process of cutting the conductive substrate layer through the two blade sections, the blade sections can cut and squeeze the conductive substrate, so that bending deformation of the cut conductive substrate is easily caused, the conductive substrate generated by cutting between the two first blade surfaces is a finished product, and the two second blade surfaces are waste materials, so that in order to improve the waste discharge efficiency of the waste materials and the yield of the finished product, alpha is more than or equal to 0 DEG and less than or equal to 2.2 DEG; if alpha is more than 2.2 degrees, the first knife face of the knife edge section is too large, so that bending deformation generated by the knife edge section is too large when the knife edge section cuts the finished product piece, and the yield of