PCB panel

Abstract

This utility model discloses a PCB panel, comprising: at least two small boards and a connecting bridge; each small board has a horizontal edge, a vertical edge, and an inclined edge connecting the horizontal edge and the vertical edge; the connecting bridge has an inclined joint edge, a cutting edge, and a limiting groove; the number of inclined joint edges is the same as the number of small boards, the inclined joint edges are connected to the inclined edges, and each end of each inclined joint edge is connected to a cutting edge, the cutting edges and the limiting grooves are arranged sequentially along a first direction. This utility model solves the problems of low panel utilization and long processing paths for board separation in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of PCB board technology, and in particular to a PCB panel. Background Technology

[0002] In existing PCB manufacturing processes, to facilitate processing, transportation, and packaging, engineers typically combine multiple identical small circuit boards (small boards) into a large production panel (or panel for short) by connecting bridges.

[0003] In traditional technology, the apex corners of this small board are right-angled. This results in a panel with low space utilization, and there are two typical connection methods: One option is a single-sided connection scheme, where one edge of the right angle of the small board is connected to the connecting bridge. Although this method only requires a single milling operation and simplifies the board separation process, it usually requires increasing the length of the connecting bridge to ensure the connection strength between two adjacent small boards. This results in an excessive gap between the two adjacent small boards, which reduces space utilization and weakens the splicing strength.

[0004] The second option is a double-sided right-angle connection scheme, where both edges at the right angle of the small plate are connected to the connecting bridge. Although this method improves the structural strength, it requires two orthogonal milling operations to complete the plate separation operation, resulting in a long processing path and low efficiency for plate separation. Utility Model Content

[0005] The purpose of this invention is to propose a PCB panel that aims to solve the problems of low panel utilization and long processing paths for panel separation in the prior art.

[0006] To achieve one or more of the above objectives or other objectives, this utility model proposes a PCB panel, which includes: each of the small boards having a horizontal edge, a vertical edge, and an inclined edge connecting the horizontal edge and the vertical edge; The connecting bridge is provided with a mitered edge, a starting cut edge, and a limiting groove; the number of mitered edges is the same as the number of small plates, the mitered edges are connected to the edge of the inclined plate, and each end of each mitered edge is connected to a starting cut edge, the starting cut edges and the limiting grooves are arranged sequentially along the first direction.

[0007] In some embodiments of the PCB panel of this utility model, multiple half-holes are provided on both the horizontal and vertical sides; A clearance is provided between the half-hole and the end of the inclined plate adjacent to it. When in the pre-cutting state, a gap is formed between the milling cutter and the half-hole.

[0008] In some embodiments of the PCB panel of this utility model, each cutting edge includes a first clearance edge, a starting cutting edge, and a second clearance edge. The initial cutting edge is provided in a one-to-one correspondence with the limiting groove, and the two ends of the initial cutting edge are respectively connected to the inner end of the first clearance section edge and the inner end of the second clearance section edge; When the starting edge is located between two adjacent small plates, the outer ends of the first clearance section edge and the outer ends of the second clearance section edge are respectively connected to two adjacent oblique joint edges. When the starting edge is located outside two adjacent small plates, the outer end of the first clearance segment edge is connected to the outer end of the second clearance segment edge; The starting cutting edge is configured such that it can be tangent to the milling cutter when in the pre-cutting state.

[0009] In some embodiments of the PCB panel of this utility model, the initial cut edge is arc-shaped.

[0010] In some embodiments of the PCB panel of this utility model, the midpoint of the initial cut edge is located on the center line between two adjacent small boards.

[0011] In some embodiments of the PCB panel of this utility model, the limiting groove is V-shaped or U-shaped.

[0012] In some embodiments of the PCB panel of this utility model, the diameter of the half hole is P, and the distance of the clearance gap is S; wherein S satisfies: 0.6P ≤ S ≤ 0.7P.

[0013] In some embodiments of the PCB panel of this utility model, the side length of the inclined plate and the side length of the inclined joint are equal and both are W; where D is the diameter of the milling cutter, and W satisfies: 2 / 3D ≤ W ≤ 4 / 5D.

[0014] In some embodiments of the PCB panel of this utility model, the recess depth H of the starting cut edge from one end adjacent to the inclined plate edge to the midpoint of the edge of the starting cut edge, where D is the diameter of the milling cutter, and H satisfies: 0.4D ≤ H ≤ 0.5D.

[0015] In some embodiments of the PCB panel of this utility model, the distance between the edges of two adjacent small boards is G, where D is the diameter of the milling cutter, and G satisfies: 1.1D ≤ G ≤ 1.4D.

[0016] In some embodiments of the PCB panel of this utility model, the included angle between the outer edge of the inclined plate and the outer edge of the horizontal plate is 45°.

[0017] The present invention has the following beneficial effects: The PCB panel proposed in this utility model reduces the space occupied by the connecting bridge by using the beveled edge, the starting edge, and the limiting groove. While ensuring the function of the connecting bridge, it is easy to reduce the gap between adjacent small boards, thereby improving the space utilization of the PCB panel.

[0018] By placing a slanted edge between the horizontal and vertical edges of the plate, and combining it with the slanted joint edge, the connection strength between the small plate and the connecting bridge is ensured while shortening the connection length between them. The starting edge is used as a marker for the cutting start point, and the limiting groove serves as a cutting turning point for the milling cutter's feed path, facilitating the user to complete the cutting of the small plate and the connecting bridge along a specified path and ensuring cutting quality.

[0019] In summary, the PCB panel, while ensuring the connection strength and cutting quality between the small board and the connecting bridge, shortens the cutting path length of the board splitting operation and improves space utilization. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] in: Figure 1 This is a schematic diagram of the structure of a PCB panel in the prior art; Figure 2 This is a schematic diagram of the cutting structure of a PCB panel in the prior art; Figure 3 This is a schematic diagram of the PCB panel structure in one embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a single small board of the PCB panel in one embodiment of the present invention; Figure 5 This is a schematic diagram of the connecting bridge of the PCB panel in one embodiment of the present invention; Figure 6 This is a schematic diagram of the PCB panel in the first milling starting point state according to one embodiment of the present invention; Figure 7 This is a schematic diagram of the PCB panel in the second milling starting point state according to one embodiment of the present invention; Figure 8 This is a schematic diagram of the PCB panel in the third milling starting point state according to one embodiment of the present invention; Figure 9This is a schematic diagram of the PCB panel in the milling endpoint state according to one embodiment of the present invention.

[0022] The image is labeled with: 10. Small plate; 11. Horizontal plate edge; 12. Slanted plate edge; 13. Vertical plate edge; 14. Half hole; 20. Connecting bridge; 21. Slanted joint edge; 22. Starting cutting edge; 221. First clearance section edge; 222. Starting cutting edge; 223. Second clearance section edge; 23. Limiting groove; 24. Marking frame; 30. Milling cutter. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figures 3 to 9 The first embodiment of this utility model is to provide a PCB panel, which includes at least two small boards 10 and a connecting bridge 20; Each of the small plates 10 has a horizontal plate edge 11, a vertical plate edge 13, and an inclined plate edge 12 connecting the horizontal plate edge 11 and the vertical plate edge 13; The connecting bridge 20 is provided with a mitered edge 21, a starting cut edge 22 and a limiting groove 23; the number of mitered edges 21 is the same as the number of small plates 10, the mitered edges 21 are connected to the inclined plate edge 12, and each end of each mitered edge 21 is connected to a starting cut edge 22, the starting cut edge 22 and the limiting groove 23 correspond one-to-one and are arranged sequentially along the first direction.

[0025] In this embodiment, the space occupied by the connecting bridge 20 is reduced by using the miter joint 21, the starting cut edge 22 and the limiting groove 23. While ensuring the function of the connecting bridge 20, it is easy to reduce the gap between adjacent small boards 10, thereby improving the space utilization of the PCB panel.

[0026] By positioning the inclined plate edge 12 between the horizontal plate edge 11 and the vertical plate edge 13, and combining it with the connection of the inclined plate edge 21 to the inclined plate edge 12, the connection strength between the small plate 10 and the connecting bridge 20 is ensured while shortening the connection length between the small plate 10 and the connecting bridge 20. The starting edge 22 serves as a marker for the cutting start point in the first direction, and the limiting groove 23 serves as the cutting end point in the first direction and the cutting start point in the second direction when the milling cutter 30 is tangent to the plane containing the inclined plate edge 12. This facilitates the user in completing the cutting of the small plate 10 and the connecting bridge 20 along a specified path, ensuring cutting quality.

[0027] In summary, the PCB panel, while ensuring the connection strength and cutting quality between the small board 10 and the connecting bridge 20, shortens the cutting path length of the board splitting operation and improves space utilization.

[0028] Specifically, the limiting groove 23 is straight, and the center point of the starting cut edge 22 is perpendicular to the center point of the limiting groove 23 to ensure the normal use of the limiting groove 23.

[0029] See Figure 1 In traditional technology, when the small board 10' structure adopts a double-sided right-angle connection scheme, the milling cutter 30 performs two orthogonal milling cuts, making the cutting path of the milling cutter 30 L-shaped. Through the inclined plate edge 12 and the starting cutting edge 22, the shape of the milling cutter 30 feed path in the first direction between the starting cutting edge 22 and the limiting groove 23 of the PCB panel of this utility model is straight, thereby shortening the cutting path length of the board separation operation.

[0030] Specifically, to facilitate PCB panel production, multiple small boards 10 are arranged in a matrix, corresponding to: When the PCB panel is split, the starting cutting edge 22 is configured to be tangent to the milling cutter 30 when it is in the pre-cutting state, and the inclined plate edge 12 is configured to be tangent to the milling cutter 30 when the milling cutter 30 is tangent to the limiting groove 23.

[0031] In some embodiments, a connecting bridge 20 connects two small plates 10. The connecting bridge 20 has two miter edges 21, a first cut edge 22, and a second cut edge 22. The first cut edge 22 connects to the two miter edges 21 respectively. Each of the two miter edges 21 is connected to a second cut edge 22. The second cut edge 22 has half the shape and size of the first cut edge 22, or the second cut edge 22 has the same shape and size as the first cut edge 22. Figure 3 The two small plates 10 at the edge of the central plate are connected to the connecting bridge 20.

[0032] In some embodiments, a connecting bridge 20 connects three small plates 10. The connecting bridge 20 has three miter edges 21, a first starting edge 22, and a second starting edge 22. The first starting edge 22 connects two adjacent miter edges 21 respectively. The outer ends of the first miter edge 21 and the third miter edge 21 located at the outer edge are each connected to a second starting edge 22. The second starting edge 22 is half the shape and size of the first starting edge 22, or the second starting edge 22 is the same as the shape and size of the first starting edge 22.

[0033] In some embodiments, one connection bridge 20 connects four small boards 10, such that the connection bridge 20 is in a "cross" shape. The connection bridge 20 is provided with four miter edges 21 and first starting cutting edges 22, and two adjacent miter edges 21 are provided with a section of the first starting cutting edge 22; there are four corresponding limiting grooves 23, and the four limiting grooves 23 are connected to form a "square" shape.

[0034] In some embodiments of the PCB panel of the present utility model, with reference to Figures 3 to 4 , a plurality of half holes 14 are provided on each of the horizontal board edge 11 and the vertical board edge 13; An avoidance gap is provided between the half hole 14 and the end adjacent to the inclined board edge 12, and in the pre-cutting state, a gap is formed between the milling cutter 30 and the half hole 14.

[0035] In this embodiment, the half holes 14 are used for electrical connection or structural positioning. The avoidance gap is utilized to prevent the cutting operation of the milling cutter 30 from damaging the half holes 14, that is, to avoid scrapping the small board 10 at this position.

[0036] see Figure 1 and Figure 2 , when the structure of the small board 10 in the conventional technology adopts a bilateral right-angle connection scheme, the milling cutter 30 performs two orthogonal milling cuts. Frequent turning of the milling cutter 30 at the right-angle point is very likely to cause path deviation, which will not only damage the adjacent precise half hole 14' and lead to product scrapping; moreover, if the cutting is performed far away from the half hole 14 to avoid risks, uneven residual burrs will be left on the edge of the separated small board 10, and part of the connection bridge 20' will not be cut off, affecting the appearance and subsequent assembly.

[0037] For the PCB panel of the present utility model, the mark of the starting cutting edge 22 is combined with the avoidance gap, so that the tool drop position of the milling cutter 30 avoids the half hole 14 and prevents the half hole 14 from being damaged; then the limiting groove 23 is used to limit the end point of the first feed path of the milling cutter 30 (that is, the end point of the feed path of the milling cutter 30 in the first direction), the second feed path of the milling cutter 30 is parallel to the direction of the inclined board edge 12. When the adjacent next starting cutting edge 22 is tangent to the milling cutter 30, the tangent point of the milling cutter 30 and the plane where the inclined board edge 12 is located has already passed the other end of the inclined board edge 12, thereby completing the complete cutting of the connection bridge 20 and the current inclined board edge 12, and avoiding leaving uneven residual burrs.

[0038] In some embodiments of the PCB panel of the present utility model, with reference to Figure 3 and Figure 5 , each section of the starting cutting edge 22 includes a first avoidance section edge 221, a starting cutting edge 222 and a second avoidance section edge 223; The initial cutting edge 222 is provided in a one-to-one correspondence with the limiting groove 23, and the two ends of the initial cutting edge 222 are respectively connected to the inner end of the first clearance section edge 221 and the inner end of the second clearance section edge 223; When the starting edge 22 is located between two adjacent small plates 10, the outer ends of the first clearance section edge 221 and the outer ends of the second clearance section edge 223 are respectively connected to the two adjacent oblique joint edges 21. When the starting edge 22 is located outside two adjacent small plates 10, the outer end of the first clearance section edge 221 is connected to the outer end of the second clearance section edge 223; The starting cutting edge 22 is configured such that when in the pre-cutting state, the starting cutting edge 222 can be tangent to the milling cutter 30.

[0039] In this embodiment, both the first clearance edge 221 and the second clearance edge 223 are used to ensure that a gap is formed between the starting cutting edge 222 and the horizontal edge 11 or vertical edge 13 of one of the small plates 10, so as to prevent the milling cutter 30 from cutting into the half hole 14. The starting cutting edge 222 is used to mark the entry position of the milling cutter 30.

[0040] In some embodiments of the PCB panel of this utility model, reference is made to... Figures 5 to 9 The initial cut edge 222 is arc-shaped.

[0041] In this embodiment, the distance the milling cutter 30 travels from its initial drop position to the limiting groove 23 is shortened, thereby further shortening the cutting path length of the plate splitting operation. Specifically, the starting cutting edge 222 matches the radius of the milling cutter 30, providing a better guiding and positioning surface for the milling cutter 30, achieving precise entry, and avoiding impact and positioning deviation.

[0042] In some embodiments of the PCB panel of this utility model, reference is made to... Figures 5 to 9 The midpoint of the initial cut edge 222 is located on the center line between two adjacent small plates 10.

[0043] In this embodiment, the aesthetics of the two adjacent small plates 10 cut by the milling cutter 30 are improved, and one of the small plates 10 is prevented from having too many blank edges.

[0044] In some embodiments of the PCB panel of this utility model, the limiting groove 23 is V-shaped or U-shaped.

[0045] In this embodiment, the limiting groove 23 limits the end point of the first cutting path of the milling cutter 30 and also buffers the stress during cutting and vibration.

[0046] In some embodiments, the depth of the limiting groove 23 ranges from 0.05mm to 0.15mm, and the width of the limiting groove 23 ranges from 0.05mm. During the plate milling operation, the stress from cutting and vibration is preferentially concentrated at the bottom of the limiting groove 23, inducing microcracks there and causing these microcracks to steadily propagate along the setting path of the limiting groove 23, thereby releasing the destructive and random stress, thus achieving controllable stress release, effectively preventing stress from being transmitted to the half-hole 14 area, and providing secondary protection for the half-hole 14.

[0047] Specifically, the diameter P of the half-hole 14 is 0.6 mm, and the diameter D of the milling cutter 30 is 1.2 mm.

[0048] In some embodiments of the PCB panel of this utility model, reference is made to... Figure 6 The diameter of the semi-hole 14 is P, and the distance of the clearance gap is S; where S satisfies: 0.6P ≤ S ≤ 0.7P.

[0049] In this embodiment, the safety buffer range provides an absolute safety margin for milling paths and process fluctuations, protecting the half-hole 14 from damage and physically isolating it from the effects of processing stress and vibration. This range ensures an optimal balance between safety and space utilization. Specifically, the value of S is 0.36 mm, which allows for more half-holes 14 to be made on a section of the plate edge (i.e., a section of the horizontal plate edge 11 or the vertical plate edge 13). The clearance distance is S.

[0050] In some embodiments of the PCB panel of this utility model, reference is made to... Figure 6 The side lengths of the inclined plate 12 and the inclined connecting edge 21 are equal and both are W; where D is the diameter of the milling cutter 30, and W satisfies: 2 / 3D ≤ W ≤ 4 / 5D. The moving distance of the milling cutter 30 to translate and cut the connecting bridge 20 along the second direction parallel to the plane where the inclined plate 12 is located is also W.

[0051] In this embodiment, it is ensured that the connecting bridge 20 can be completely removed in a single cut, while retaining enough material to guarantee the strength of the panel; it also avoids large cutting loads and wasted space, and facilitates the determination of the remaining side length of the small plate 10, as well as the distance between the half-hole 14 and the end of the inclined side. Specifically, the value of W is 0.8 mm.

[0052] In some embodiments of the PCB panel of this utility model, reference is made to... Figure 6 The depth of the indentation of the starting cutting edge 22 from one end adjacent to the inclined plate edge 12 to the midpoint of the edge of the starting cutting edge 222 is H, where D is the diameter of the milling cutter 30, and H satisfies: 0.4D ≤ H ≤ 0.5D.

[0053] In this embodiment, the milling cutter 30 is designed to easily capture the path, minimizing idle travel, while retaining core material to ensure the structural strength of the connecting bridge 20 before the plate separation operation. The initial cutting edge 222 matches the radius of the milling cutter 30, providing better guidance and positioning for the milling cutter 30, achieving precise cutting and avoiding impact and positioning deviation. Specifically, the value of H is 0.5 mm.

[0054] In some embodiments of the PCB panel of this utility model, reference is made to... Figure 6 The distance between the edges of two adjacent small plates 10 is G, where D is the diameter of the milling cutter 30, and H satisfies: 1.1D ≤ G ≤ 1.4D.

[0055] In this embodiment, a suitable operating space is provided for the milling cutter 30, while ensuring that the connecting bridge 20 has sufficient cantilever length to provide flexibility and appropriate strength. Specifically, the value of G is 1.5 mm.

[0056] In some embodiments of the PCB panel of this utility model, reference is made to... Figure 6 The included angle between the inclined plate side 12 and the outer extension of the horizontal plate side 11 is 45°, and the included angle is α.

[0057] In this embodiment, the stress concentration factor is reduced, thereby reducing burrs generated during the plate separation process.

[0058] In some embodiments of the PCB panel of this utility model, when the milling cutter 30 is tangent to the initial cutting edge 222, the shortest distance from the end of the inclined plate edge 12 adjacent to the milling cutter 30 is Q, and the value of Q is 0.15mm.

[0059] In some embodiments of the PCB panel of this utility model, reference is made to... Figure 5 The connecting bridge 20 is also provided with a marking frame 24 in the middle. Each small plate 10 corresponds to a marking frame 24, which is used for equipment identification to determine the quality status of the corresponding small plate 10. If the small plate 10 is damaged during the initial production, the marking frame 24 is marked.

[0060] The PCB board separation method of this utility model includes: Step S1: Determine the position of the inclined plate edge 12 to be milled relative to the connecting bridge 20; Step S2: Position the milling cutter 30 at the corresponding starting edge 22 of the connecting bridge 20, and make the milling cutter 30 tangent to the starting edge 22; Step S3: Drive the milling cutter 30 to translate along the first direction to cut the cutting turning area at the limiting groove 23, so that the milling cutter 30 is tangent to both the limiting groove 23 and the plane where the inclined plate edge 12 to be cut is located; Step S4: Drive the milling cutter 30 to translate and cut the connecting bridge 20 along a second direction parallel to the plane where the inclined plate edge 12 is located. The point of tangency between the milling cutter 30 and the plane where the inclined plate edge 12 is located is located in the cutting turning area at the other end of the inclined plate edge 12, thus completing the cutting of the inclined plate edge 12 and the connecting bridge 20.

[0061] In step S3, the feed path of the milling cutter 30 is parallel to a section of the plate edge (i.e., a section of the horizontal plate edge 11 or the vertical plate edge 13).

[0062] The cutting transition zone at the other end of the inclined plate edge 12 is located between the newly milled small plate 10 and the next small plate 10 to be milled. The milling cutter 30 moves in a translational cutting direction parallel to the edge direction of the inclined plate edge 12.

[0063] Step S1 further includes: determining the number of inclined plate edges 12 connected to the connecting bridge 20 that need to be milled; Based on the required milling quantity, determine the number of times to execute steps S1, S2, S3, and S4; When the number of milling operations required is greater than or equal to 2, in step S2: the milling cutter 30 is positioned at the first starting edge 22 of the connecting bridge 20, and the milling cutter 30 is tangential to the first starting edge 22. The first cutting edge 22 is located outside the distribution area of ​​the multiple inclined plate edges 12 connected to the connecting bridge 20 that need to be milled.

[0064] Specifically, when the number of milling operations to be performed is 1, the milling cutter 30 is positioned at the starting cutting edge 22 of the connecting bridge 20, which is located on any side of the inclined plate edge 12, and the milling cutter 30 is tangential to the starting cutting edge 22.

[0065] In this embodiment, it is convenient to shorten the machining path length of milling.

[0066] The PCB panel separation method of this utility model further includes: step S5: after the previous cutting of the inclined plate edge 12 to be milled and the connecting bridge 20 is completed, it is determined whether the plane of the next inclined plate edge 12 to be milled is tangent to the milling cutter 30. If so, proceed to step S4; If not, execute step S3 first, then execute step S4.

[0067] In this embodiment, it is ensured that the connecting bridge 20 can be completely removed in a single cut, while retaining enough material to guarantee the strength of the panel. Specifically, the translational cutting direction of the milling cutter 30 (the feed path of this section of the milling cutter 30) is parallel to the edge direction of the inclined plate edge 12.

[0068] Based on the dimensions described above, the diameter P of the half-hole 14 is 0.6 mm, the diameter D of the milling cutter 30 is 1.2 mm, S is 0.36 mm, W is 0.8 mm, H is 0.5 mm, and G is 1.5 mm. When the cutting of the current small plate 10 connected to the connecting bridge 20 is completed, the plane containing the inclined edge 12 of the next small plate 10 is tangent to the milling cutter 30, and the initial cutting edge 222 between the current small plate 10 and the next small plate 10 is also tangent to the milling cutter 30, further shortening the machining path length of the milling.

[0069] Specifically, in step S3, the moving distance of the driven milling cutter 30 to the cutting turning area at the limiting groove 23 along the first direction is 0.2mm. In step S4, the moving distance of the driven milling cutter 30 to the connecting bridge 20 along the second direction parallel to the plane where the inclined plate edge 12 is located is 0.8mm.

[0070] Specifically, in the PCB panel of the utility model: at the edge of the PCB panel, a connecting bridge 20 connects two small boards 10; at the middle of the PCB panel, a connecting bridge 20 connects four small boards 10.

[0071] When the connecting bridge 20 at the cutting edge is cut, the connecting bridge 20 connects two small plates 10. The corresponding plate separation method is as follows: In step S1, there are two inclined plate edges 12 that need to be milled. The two inclined plate edges 12 that need to be milled are respectively connected to two adjacent inclined joint edges 21 of the connecting bridge 20. In step S2, the milling cutter 30 is positioned at a starting edge 22 outside the two small plates 10, and the milling cutter 30 is tangent to the starting edge 22; In step S3, the milling cutter 30 is driven to translate along the first direction to cut the cutting turning area at the limiting groove 23, so that the milling cutter 30 is tangent to the plane of the limiting groove 23 and the plane of the first inclined plate edge 12 to be cut. In step S4, the milling cutter 30 is driven to translate and cut the connecting bridge 20 along the second direction parallel to the plane where the first inclined plate edge 12 is located. The point of tangency between the milling cutter 30 and the plane where the first inclined plate edge 12 is located is located in the cutting turning area at the other end of the inclined plate edge 12, thus completing the cutting of the first inclined plate edge 12 and the connecting bridge 20. At this time, the milling cutter 30 is located between the two small plates 10.

[0072] In step S5, it is determined whether the plane containing the second inclined plate edge 12 to be milled is tangent to the milling cutter 30; If so, execute step S4: drive the milling cutter 30 to translate and cut the connecting bridge 20 along the second direction parallel to the plane where the second inclined plate edge 12 is located. The point of tangency between the milling cutter 30 and the plane where the second inclined plate edge 12 is located is the cutting turning area at the other end of the second inclined plate edge 12, thus completing the cutting of the second inclined plate edge 12 and the connecting bridge 20.

[0073] If not, first execute step S3: drive the milling cutter 30 to translate along the first direction to cut the cutting turning area at the limiting groove 23, so that the milling cutter 30 is tangent to the plane where the limiting groove 23 and the second inclined plate edge 12 to be cut are located; Then execute step S4: drive the milling cutter 30 to translate and cut the connecting bridge 20 along the second direction parallel to the plane where the second inclined plate edge 12 is located. The point of tangency between the milling cutter 30 and the plane where the second inclined plate edge 12 is located is the cutting turning area at the other end of the second inclined plate edge 12, thus completing the cutting of the second inclined plate edge 12 and the connecting bridge 20.

[0074] When the connecting bridge 20 is located in the middle of the entire board, this connecting bridge 20 connects four small boards 10. The corresponding board separation method is as follows: In step S1, there are four inclined plate edges 12 that need to be milled, and the four inclined plate edges 12 that need to be milled are respectively connected to the four inclined joint edges 21 of the connecting bridge 20. In step S2, the milling cutter 30 is positioned at any one of the starting cutting edges 22 (the starting cutting edge 22 is the first starting cutting edge 22), and the milling cutter 30 is made tangent to the starting cutting edge 22; In step S3, the milling cutter 30 is driven to translate along the first direction to cut the cutting turning area at the limiting groove 23, so that the milling cutter 30 is tangent to the plane of the limiting groove 23 and the plane of the first inclined plate edge 12 to be cut. In step S4, the milling cutter 30 is driven to translate and cut the connecting bridge 20 along the second direction parallel to the plane where the first inclined plate edge 12 is located. The point of tangency between the milling cutter 30 and the plane where the first inclined plate edge 12 is located is located in the cutting turning area at the other end of the inclined plate edge 12, thus completing the cutting of the first inclined plate edge 12 and the connecting bridge 20. At this time, the milling cutter 30 is located between the first inclined plate edge 12 to be milled and the second inclined plate edge 12 to be milled.

[0075] In step S5, it is determined whether the plane containing the second inclined plate edge 12 to be milled is tangent to the milling cutter 30; If so, execute step S4: drive the milling cutter 30 to translate and cut the connecting bridge 20 along the second direction parallel to the plane where the second inclined plate edge 12 is located. The point of tangency between the milling cutter 30 and the plane where the second inclined plate edge 12 is located is located in the cutting turning area at the other end of the second inclined plate edge 12, thus completing the cutting of the second inclined plate edge 12 and the connecting bridge 20. At this time, the milling cutter 30 is located between the second inclined plate edge 12 to be milled and the third inclined plate edge 12 to be milled.

[0076] If not, first execute step S3: drive the milling cutter 30 to translate along the first direction to cut the cutting turning area at the limiting groove 23, so that the milling cutter 30 is tangent to the plane where the limiting groove 23 and the second inclined plate edge 12 to be cut are located; Then execute step S4: drive the milling cutter 30 to translate and cut the connecting bridge 20 along the second direction parallel to the plane where the second inclined plate edge 12 is located. The point of tangency between the milling cutter 30 and the plane where the second inclined plate edge 12 is located is located in the cutting turning area at the other end of the second inclined plate edge 12, thus completing the cutting of the second inclined plate edge 12 and the connecting bridge 20. At this time, the milling cutter 30 is located between the second inclined plate edge 12 to be milled and the third inclined plate edge 12 to be milled.

[0077] The method for separating the third and fourth inclined plate edges 12 that need to be milled is the same as the method for separating the second inclined plate edge 12 that needs to be milled. When the separation of the fourth inclined plate edge 12 that needs to be milled is completed, the milling cutter 30 is located between the fourth inclined plate edge 12 that needs to be milled and the first inclined plate edge 12 that needs to be milled, thereby completing the cutting of the four small plates 10 connected by the connecting bridge 20.

[0078] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A PCB panel, characterized by, Includes at least two small boards and a connecting bridge; Each of the small plates has a horizontal plate edge, a vertical plate edge, and an inclined plate edge connecting the horizontal plate edge and the vertical plate edge; The connecting bridge is provided with a mitered edge, a starting cut edge, and a limiting groove; the number of mitered edges is the same as the number of small plates, the mitered edges are connected to the edge of the inclined plate, and each end of each mitered edge is connected to a starting cut edge, the starting cut edges and the limiting grooves are arranged sequentially along the first direction.

2. The PCB panel of claim 1, wherein, Multiple half-holes are provided on both the horizontal plate edge and the vertical plate edge; A clearance is provided between the half-hole and the end of the inclined plate adjacent to it. When in the pre-cutting state, a gap is formed between the milling cutter and the half-hole.

3. The PCB panel of claim 2, wherein, Each segment's starting edge includes a first avoidance segment edge, a starting edge, and a second avoidance segment edge; The initial cutting edge is provided in a one-to-one correspondence with the limiting groove, and the two ends of the initial cutting edge are respectively connected to the inner end of the first clearance section edge and the inner end of the second clearance section edge; When the starting edge is located between two adjacent small plates, the outer ends of the first clearance section edge and the outer ends of the second clearance section edge are respectively connected to two adjacent oblique joint edges. When the starting edge is located outside two adjacent small plates, the outer end of the first clearance segment edge is connected to the outer end of the second clearance segment edge; The starting cutting edge is configured such that it can be tangent to the milling cutter when in the pre-cutting state.

4. The PCB panel of claim 3, wherein, The initial cut edge is arc-shaped.

5. The PCB panel of any of claims 1-4, wherein, The limiting groove is V-shaped or U-shaped.

6. The PCB panel of any of claims 3-4, wherein, The diameter of the semi-hole is P, and the clearance distance is S; where S satisfies: 0.6P ≤ S ≤ 0.7P.

7. The PCB panel of claim 6, wherein, The side lengths of the inclined plate and the inclined joint are equal and both are W; where D is the diameter of the milling cutter, and W satisfies: 2 / 3D ≤ W ≤ 4 / 5D.

8. The PCB panel of claim 7, wherein, The depth of the indentation of the starting cutting edge from one end adjacent to the edge of the inclined plate to the midpoint of the edge of the starting cutting edge is H, where D is the diameter of the milling cutter, and H satisfies: 0.4D ≤ H ≤ 0.5D.

9. The PCB panel according to claim 8, characterized in that, The distance between the edges of two adjacent small plates is G, where D is the diameter of the milling cutter, and G satisfies: 1.1D ≤ G ≤ 1.4D.

10. The PCB panel according to claim 6, characterized in that, The included angle between the inclined plate edge and the outer extension of the horizontal plate edge is 45°.

Images