Circuit board processing technology without internal pins

Abstract

The present invention discloses a printed circuit board processing technology without using internal dowel pins, which includes the following steps: S1. Take a large board material and position the large board material on the workbench of a numerical control router through the fixture dowel pins of two groups of peripheral positioning holes; S2. Use the numerical control router to perform routing and cutting on the large board material in the direction from away from the positioning corner to close to the positioning corner to cut out at least one first type of printed circuit board; S3. Adjust the routing and cutting speed of the numerical control router until the A-th side of the first type of printed circuit board is completely separated from the large board material; S4. Pause the numerical control router; S5. Use the numerical control router to perform routing and cutting on the large board material in the direction from away from the positioning corner to close to the positioning corner to cut out at least one N-th type of printed circuit board; S6. Adjust the routing and cutting speed of the numerical control router until the C-th side of the N-th type of printed circuit board is completely separated from the large board material; S7. Pause the numerical control router; S8. Remove the waste material. The present invention has the advantages of simple processing method, no need to use internal dowel pins, time saving, high operation efficiency and low cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of printed circuit board processing technology, and particularly relates to a printed circuit board processing technology without using internal dowel pins. Background Art

[0002] Printed circuit board manufacturers process the shapes of finished and semi-finished boards according to process requirements or customer needs. Traditional forming methods include CNC routing, die cutting, hand routing, hand cutting, etc. CNC routing machines are now widely used due to their characteristics such as safe operation, high efficiency, and high forming accuracy.

[0003] As Figure 1 shown, in the process of producing printed circuit boards, in order to improve efficiency and save costs, after manufacturing small-area printed circuit boards on a large-area sheet material, the small-area printed circuit boards are cut from the sheet material by a CNC routing machine. To prevent the printed circuit boards being routed from undergoing relative displacement during the routing process, which may affect the routing processing accuracy of the printed circuit boards, a large number of positioning dowel pins need to be set on the workbench of the CNC routing machine for each printed circuit board to be routed, and corresponding pin holes for inserting the positioning dowel pins need to be set on each printed circuit board. Then, the pin holes on the printed circuit board are aligned with the already fixed positioning dowel pins on the workbench, so that the printed circuit board is positioned and installed on the workbench through the positioning dowel pins, and then the routing processing operation of the printed circuit board is carried out to produce printed circuit boards of corresponding models.

[0004] This makes the work process of positioning and routing printed circuit boards on the sheet material very cumbersome and time-consuming. When changing products of different models, workers need to remove the positioning dowel pins driven for the previous model, re-set the positioning dowel pins on the workbench, and re-drill corresponding pin holes on the printed circuit boards of the new model to meet the positioning operation requirements for routing the printed circuit boards of the new model. With the increase in production costs such as materials and labor, and the improvement of process requirements from end customers, the positioning method by the cooperation of positioning dowel pins and pin holes can no longer meet these requirements. In addition, during the routing processing of some small printed circuit boards, it is simply impossible to reserve pin holes at the positions of the small printed circuit boards, thus resulting in the technical problem of difficult positioning.

[0005] As patent application No. 201710019052.7 discloses a PCB routing and cutting process without nailing pins on the workbench, at least one PCB is routed and cut from a stock board by using a CNC router. The PCB routing and cutting process without nailing pins on the workbench includes the following steps: positioning and fixing the stock board by using an air clamp, wherein the air clamp includes a first positioning pin column and a second positioning pin column, the first positioning pin column is a fixed pin column, the second positioning pin column can move relative to the first positioning pin column to clamp and fix the stock board, and first positioning pin holes and second positioning pin holes are formed in the edge portion of the stock board corresponding to the first positioning pin column and the second positioning pin column; performing a first routing and cutting process on the stock board along the edge of the PCB by using the CNC router. During the first routing and cutting process, a plurality of breaking positions are reserved between the PCB and the stock board, and the plurality of breaking positions are distributed at intervals on the circumferential edge of the PCB. The PCB and the stock board are connected through the breaking positions; after the first routing and cutting process is completed, performing a second routing and cutting process on each of the breaking positions by using the CNC router to separate the PCB from the stock board. During the second routing and cutting process, the stock board and the currently routed and cut PCB are simultaneously pressed against the workbench of the CNC router by using the pressure foot device of the CNC router, wherein the air clamp is installed on the workbench. The PCB routing and cutting process without nailing pins on the workbench can complete PCB routing and cutting without nailing pins. However, in this process, a plurality of breaking positions need to be reserved between the PCB and the stock board, and the processing method is complex and not simple. Summary of the Invention

[0006] In order to solve the deficiencies in the prior art, the present invention provides a PCB processing process without punching internal pins and with a simple processing method.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A PCB processing process without punching internal pins, which is completed by relying on a CNC router and the workbench of the CNC router. At least two groups of peripheral positioning holes are provided on the workbench of the CNC router, and the two groups of peripheral positioning holes enclose a positioning angle. Fixture pins are provided in the peripheral positioning holes, and the process includes the following steps:

[0009] S1. Take a large board stock and position the large board stock on the workbench of the CNC router through the fixture pins of the two groups of peripheral positioning holes;

[0010] S2. Use a numerically controlled router to perform routing on the large board material from a direction away from the positioning angle to a direction close to the positioning angle to route out at least one first type of circuit board. The first type of circuit board has A + B sides. The A-th side of the first type of circuit board is the side closest to the positioning angle. The numerically controlled router first performs routing on the B sides of the first type of circuit board, and then the numerically controlled router performs routing on the A-th side of the first type of circuit board. A is 1, and B is a positive integer greater than or equal to 2;

[0011] S3. When the numerically controlled router performs routing on the A-th side of the first type of circuit board until the remaining connection distance between the A-th side of the first type of circuit board and the large board material reaches a set distance, start the pressure foot device of the numerically controlled router to press the large board material and the first type of circuit board tightly on the workbench at the same time, and then adjust the routing speed of the numerically controlled router until the A-th side of the first type of circuit board is completely separated from the large board material;

[0012] S4. Pause the numerically controlled router and remove the first type of circuit board;

[0013] S5. Use a numerically controlled router to perform routing on the large board material from a direction away from the positioning angle to a direction close to the positioning angle to route out at least one N-th type of circuit board. The N-th type of circuit board has C + D sides. The C-th side of the N-th type of circuit board is the side closest to the positioning angle. The numerically controlled router first performs routing on the D sides of the N-th type of circuit board, and then the numerically controlled router performs routing on the C-th side of the N-th type of circuit board. C is 1, D is a positive integer greater than or equal to 2, and N is a positive integer greater than or equal to 2;

[0014] S6. When the numerically controlled router performs routing on the C-th side of the N-th type of circuit board until the remaining connection distance between the C-th side of the N-th type of circuit board and the large board material reaches a set distance, start the pressure foot device of the numerically controlled router to press the large board material and the N-th type of circuit board tightly on the workbench at the same time, and then adjust the routing speed of the numerically controlled router until the C-th side of the N-th type of circuit board is completely separated from the large board material;

[0015] S7. Pause the numerically controlled router and remove the N-th type of circuit board;

[0016] S8. Remove the remaining waste material of the large board material after routing on the workbench of the numerically controlled router, and continue to start the numerically controlled router until all types of circuit boards are completely routed.

[0017] Preferably, the positioning angle is a right angle.

[0018] Preferably, when the first type of circuit board is a quadrilateral circuit board, B = 3 and the B sides of the first type of circuit board are the B1 side, the B2 side, and the B3 side respectively. Among them, the B1 side and the B3 side are connected to both ends of the Ath side of the first type of circuit board, and the B2 side is located between the B1 side and the B3 side. In S2, the CNC router first selects the starting point of an arc or a straight line at the angle between the Ath side and the B1 side of the first type of circuit board to start cutting, then the CNC router processes the B1 side of the first type of circuit board, then the CNC router processes the B2 side of the first type of circuit board, then the CNC router processes the B3 side of the first type of circuit board, then the CNC router completes the tool retraction at the angle between the Ath side and the B3 side of the first type of circuit board, pauses the CNC router, and then starts the CNC router to perform routing on the Ath side of the first type of circuit board;

[0019] When the Nth type of circuit board is a quadrilateral circuit board, D = 3 and the D sides of the Nth type of circuit board are the D1 side, the D2 side, and the D3 side respectively. Among them, the D1 side and the D3 side are connected to both ends of the Cth side of the Nth type of circuit board, and the D2 side is located between the D1 side and the D3 side. In S5, the CNC router first selects the starting point of an arc or a straight line at the angle between the Cth side and the D1 side of the Nth type of circuit board to start cutting, then the CNC router processes the D1 side of the Nth type of circuit board, then the CNC router processes the D2 side of the Nth type of circuit board, then the CNC router processes the D3 side of the Nth type of circuit board, then the CNC router completes the tool retraction at the angle between the Cth side and the D3 side of the Nth type of circuit board, pauses the CNC router, and then starts the CNC router to perform routing on the Cth side of the Nth type of circuit board.

[0020] Preferably, when there are two or more first type of circuit boards in S2, the CNC router first sequentially completes routing on the Bth sides of all the first type of circuit boards and then sequentially completes routing on the Ath sides of all the first type of circuit boards;

[0021] When there are two or more Nth type of circuit boards in S5, the CNC router first sequentially completes routing on the Dth sides of all the Nth type of circuit boards and then sequentially completes routing on the Cth sides of all the Nth type of circuit boards.

[0022] The present invention also discloses a circuit board processing process without punching internal pins. This process relies on a CNC router and the workbench of the CNC router. There are at least two groups of peripheral positioning holes on the workbench of the CNC router. The two groups of peripheral positioning holes enclose a positioning angle, and there are fixture pins in the peripheral positioning holes, including the following steps:

[0023] S1. Take a large board material and position the large board material on the workbench of the CNC router through the fixture pins of the two groups of peripheral positioning holes;

[0024] S2. Use a numerically controlled router to perform routing on the large board material from a position far from the positioning angle to a position close to the positioning angle to cut out at least one first type of circuit board. The first type of circuit board has A + B sides. The A-th side of the first type of circuit board is the side closest to the positioning angle. The numerically controlled router first performs routing on the B sides of the first type of circuit board, and then performs routing on the A-th side of the first type of circuit board. A is 1, and B is a positive integer greater than or equal to 2;

[0025] S3. When the numerically controlled router performs routing on the A-th side of the first type of circuit board until the remaining distance between the A-th side of the first type of circuit board and the large board material reaches a set distance, start the pressing device of the numerically controlled router to press the large board material and the first type of circuit board tightly on the workbench, and then adjust the routing speed of the numerically controlled router until the A-th side of the first type of circuit board is completely separated from the large board material;

[0026] S4. Pause the numerically controlled router and remove the first type of circuit board;

[0027] S5. Remove the remaining waste material of the large board material after routing on the workbench of the numerically controlled router.

[0028] Preferably, when the first type of circuit board is a quadrilateral circuit board, B is 3, and the B sides of the first type of circuit board are the B1 side, the B2 side, and the B3 side respectively. Among them, the B1 side and the B3 side are connected to both ends of the A-th side of the first type of circuit board, and the B2 side is located between the B1 side and the B3 side. In step S2, the numerically controlled router first selects the starting point of an arc or a straight line at the angle between the A-th side and the B1 side of the first type of circuit board to start cutting, then the numerically controlled router processes the B1 side of the first type of circuit board, then the numerically controlled router processes the B2 side of the first type of circuit board, then the numerically controlled router processes the B3 side of the first type of circuit board, then the numerically controlled router completes the tool retraction at the angle between the A-th side and the B3 side of the first type of circuit board, pauses the numerically controlled router, and then starts the numerically controlled router to perform routing on the A-th side of the first type of circuit board.

[0029] Preferably, when there are two or more first type of circuit boards in step S2, the numerically controlled router first sequentially completes routing on the B sides of all the first type of circuit boards and then sequentially completes routing on the A sides of all the first type of circuit boards.

[0030] Adopting the above technical solution, the present invention has the following beneficial effects:

[0031] In the present invention, fixture pins are directly used to assist in positioning the large material board by utilizing the peripheral positioning holes on the workbench of the CNC router, and then routing and cutting processing is carried out. When processing circuit boards of different sizes and types, it is not necessary to punch internal pins, which can save the time for disassembling and assembling the pins and the time for taking out the circuit board after processing, greatly improving the operation efficiency, saving the cost of fixture loss, and the processing method is simple;

[0032] In summary, the present invention has the advantages of simple processing method, no need to punch internal pins, time saving, high operation efficiency, and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of circuit board processing by punching internal pins in the prior art;

[0034] Figure 2 is a schematic flow diagram of the present invention;

[0035] Figure 3 is a schematic structural diagram of processing a large board material without punching internal pins in the present invention;

[0036] Figure 4 is a schematic diagram of the routing and cutting direction when processing clockwise when the first type of circuit board in the present invention is a quadrilateral circuit board;

[0037] Figure 5 is a schematic diagram of the routing and cutting direction when processing counterclockwise when the first type of circuit board in the present invention is a quadrilateral circuit board;

[0038] Figure 6 is a schematic diagram of the routing and cutting direction when processing clockwise when the Nth type of circuit board in the present invention is a quadrilateral circuit board;

[0039] Figure 7 is a schematic diagram of the routing and cutting direction when processing counterclockwise when the Nth type of circuit board in the present invention is a quadrilateral circuit board. DETAILED DESCRIPTION OF THE INVENTION

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0041] The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention.

[0042] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0043] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0045] Embodiment 1

[0046] In this embodiment, a printed circuit board processing process without punching inner pins 100 is proposed. Without punching inner pins 100, it aims to solve the problems of cumbersome positioning and installation procedures and difficult positioning during the routing and cutting process of printed circuit boards in the prior art. Since the peripheral holes of the printed circuit board can be made with fixed spacing and fixed size, this positioning hole can be commonly used for sheet material positioning when processing different types of printed circuit boards, thereby saving the time for removing and inserting pins and the time for removing the material and taking the board after processing, greatly improving the operation efficiency and saving the cost of fixture loss.

[0047] Such as Figure 2 And Figure 3As shown, in an embodiment of the present invention, when it is necessary to process various different types of circuit boards on a large board, that is, when processing two or more circuit boards (it can be understood that the different types of circuit boards mentioned in the present invention refer to circuit boards of different types and sizes, which can be triangular, quadrilateral, pentagonal or even more polygon-shaped circuit boards with different sizes, and there are two or more such circuit boards on the large board), at this time, the circuit board processing process without punching internal dowel pins 100 of the present invention can be adopted. This process is completed by relying on a numerical control router and the workbench 3 of the numerical control router. At least two groups of peripheral positioning holes 4 are provided on the workbench 3 of the numerical control router. The two groups of peripheral positioning holes 4 enclose a positioning angle, and this positioning angle can be various angles, such as acute angle, right angle, obtuse angle, etc., preferably a right angle. Fixture dowel pins are provided in the peripheral positioning holes 4. The peripheral holes of the large board can be directly positioned by means of the two groups of peripheral positioning holes 4 on the workbench 3 of the numerical control router at a fixed pitch and size. It can be understood that in the present invention, at least two groups of peripheral positioning holes 4 are provided on the workbench 3 of the numerical control router. The peripheral positioning holes 4 can be two groups, three groups, four groups, etc. When there are two groups, it can be referred to Figure 3 As shown, they are respectively arranged on the left side and the lower side and enclose a positioning angle similar to a right angle. Then, the large board positions the left side and the lower side through these two groups of peripheral positioning holes 4. When there are three groups of peripheral positioning holes 4, they can be arranged on the left side, the lower side, and the right side (upper side), etc. When there are four groups of peripheral positioning holes 4, they can be arranged on the left side, the lower side, the right side, and the upper side. A positioning angle is enclosed between adjacent two groups of peripheral positioning holes 4. Any simple transformation should be covered within the protection scope of the present invention. In this embodiment of the present invention, the positioning is mainly exemplified by arranging two groups of peripheral positioning holes 4 on the left side and the lower side. Specifically, the circuit board processing process without punching internal dowel pins 100 of the present invention includes the following steps:

[0048] S1. Take the large board and position the large board on the workbench 3 of the numerical control router through the fixture dowel pins of the two groups of peripheral positioning holes 4 (when the peripheral positioning holes 4 are three groups, four groups or more groups, the large board can be positioned through the corresponding number of peripheral positioning holes 4 respectively);

[0049] S2. Use a numerically controlled router to perform routing on the large board material from a position far from the positioning angle to a position close to the positioning angle to route out at least one first type of circuit board 1. Among them, the first type of circuit board 1 has A + B sides. The A-th side of the first type of circuit board 1 is the side closest to the positioning angle. It can be understood that when there are multiple sides closest to the positioning angle, any one of them can be selected or the side with a longer connection distance to the large board material can be selected. The numerically controlled router first performs routing on the B sides of the first type of circuit board 1, and then the numerically controlled router performs routing on the A-th side of the first type of circuit board 1. A is 1, and B is a positive integer greater than or equal to 2. When there are two or more first type of circuit boards in S2, the numerically controlled router first sequentially completes routing on the B sides of all the first type of circuit boards and then sequentially completes routing on the A-th sides of all the first type of circuit boards. Specifically, there is one or more first type of circuit boards 1. For example, the same type of circuit boards arranged in the same column or the same row can be processed together at one time. The processing direction of the numerically controlled router can be clockwise, counterclockwise, or other suitable directions. When there are multiple first type of circuit boards 1, a suitable processing direction can also be selected. For example, if there are three first type of circuit boards arranged in the same column from top to bottom, the left side of the three circuit boards is the A-th side, and this side is processed last. The processing direction of the remaining sides is as follows: it can first process the uppermost side of the uppermost circuit board, then process the right sides of the three circuit boards at one time, then process the lower side of the third circuit board, and finally process the spaces between the first and second circuit boards and between the second and third circuit boards. At this time, the processing direction can be set according to requirements. Finally, process the left sides of the three circuit boards. More specifically, when the first type of circuit board is a quadrilateral circuit board, B is 3, and the B sides of the first type of circuit board are the B1 side, B2 side, and B3 side respectively. Among them, the B1 side and B3 side are connected to the two ends of the A-th side of the first type of circuit board, and the B2 side is located between the B1 side and B3 side. In S2, the numerically controlled router first selects the starting point of an arc or the starting point of a straight line at the angle between the A-th side and the B1 side of the first type of circuit board to start cutting, then the numerically controlled router processes the B1 side of the first type of circuit board, then the numerically controlled router processes the B2 side of the first type of circuit board, then the numerically controlled router processes the B3 side of the first type of circuit board, then the numerically controlled router completes the tool retraction at the angle between the A-th side and the B3 side of the first type of circuit board, pauses the numerically controlled router, and then starts the numerically controlled router to perform routing on the A-th side of the first type of circuit board. Selecting the starting point of a straight line for cutting in S2 means that the numerically controlled router feeds along the direction of a straight line, that is, in S2, the tool of the numerically controlled router moves in a straight line at the angle between the A-th side and the B1 side of the first type of circuit board. Selecting the starting point of an arc for cutting in S2 means that the numerically controlled router feeds along a certain arc direction.That is, in S2, the CNC routing machine first makes the tool of the CNC routing machine move in an arc at the included angle between the A-side and the B1-side of the first type of circuit board. After the CNC routing machine completes the tool retraction and pauses at the included angle between the A-side and the B3-side of the first type of circuit board, when the CNC routing machine is restarted to perform routing on the A-side of the first type of circuit board, the routing is performed in a straight feed manner;

[0050] S3. When the CNC routing machine performs routing on the A-side of the first type of circuit board 1 until the remaining set distance between the A-side of the first type of circuit board 1 and the large board material, which is within a few millimeters, the pressure foot device of the CNC routing machine is started to press the large board material and the first type of circuit board 1 tightly on the workbench 3 at the same time. Then, the routing speed of the CNC routing machine is adjusted until the A-side of the first type of circuit board 1 is completely separated from the large board material. More specifically, the CNC routing machine of the present invention is a prior art and has been detailedly disclosed in the background art. Its specific operation steps are to press the large board material and the first type of circuit board 1 tightly on the workbench 3 while ensuring that the soft brush and the like do not move, and slow down the routing speed of the CNC routing machine to ensure that there are no obvious convex points at the last cut-off break point of the routed first type of circuit board 1;

[0051] S4. Pause the CNC routing machine and remove the first type of circuit board 1;

[0052] S5. Please refer to Figures 4 - 7 , use the CNC routing machine to perform routing on the large board material from far away from the positioning angle to close to the positioning angle to cut out at least one Nth type of circuit board 2. Among them, the Nth type of circuit board 2 has C + D sides, and the Cth side of the Nth type of circuit board 2 is the side closest to the positioning angle. The CNC routing machine first performs routing on the D sides of the Nth type of circuit board 2, and then the CNC routing machine performs routing on the Cth side of the Nth type of circuit board 2. C is 1, D is a positive integer greater than or equal to 2, and N is a positive integer greater than or equal to 2. For example, when the Nth type of circuit board is a quadrilateral circuit board, D is 3 and the D sides of the Nth type of circuit board are the D1 side, the D2 side, and the D3 side respectively. Among them, the D1 side and the D3 side are connected to both ends of the Cth side of the Nth type of circuit board, and the D2 side is located between the D1 side and the D3 side. In the S5, the CNC routing machine first selects the starting point of the arc or the starting point of the straight line at the included angle between the Cth side and the D1 side of the Nth type of circuit board, then the CNC routing machine processes the D1 side of the Nth type of circuit board, then the CNC routing machine processes the D2 side of the Nth type of circuit board, then the CNC routing machine processes the D3 side of the Nth type of circuit board, then the CNC routing machine completes the tool retraction at the included angle between the Cth side and the D3 side of the Nth type of circuit board, pauses the CNC routing machine, and then restarts the CNC routing machine to perform routing on the Cth side of the Nth type of circuit board;

[0053] When there are two or more circuit boards of the Nth type in S5, the numerical control routing machine first sequentially completes the routing and cutting of the Dth side of all circuit boards of the Nth type, and then sequentially completes the routing and cutting of the Cth side of all circuit boards of the Nth type. That is, there are also multiple circuit boards of the Nth type. For example, the same type of circuit boards arranged in the same column or the same row can be processed together at one time. The processing direction of the numerical control routing machine can be clockwise, counterclockwise, or other appropriate directions. When there are multiple circuit boards of the Nth type, it can also select an appropriate processing direction. For example, if there are specifically two circuit boards of the Nth type, and they are arranged from left to right in the same row, the lower side of the two circuit boards is the Cth side, and this side is processed last. The processing direction of the remaining sides is that it can first process the leftmost side of the leftmost circuit board, then process the upper sides of the two circuit boards at one time, and then process the right side of the right circuit board. At this time, the processing direction can be set according to requirements. The selection of the arc starting point or the straight line starting point for cutting in S5 means cutting along a straight line or an arc. There are circuit boards with various shape models on the same large board material. In the present invention, the overall routing board sequence is from the upper right to the lower right, and then from right to left. The numerical control routing machine completes the tool retraction at the angle between the Cth side and the D3 side of the circuit board of the Nth type. After pausing the numerical control routing machine, when starting the numerical control routing machine to perform routing and cutting on the Cth side of the circuit board of the Nth type, it also performs routing and cutting in a straight-line feed mode;

[0054] S6. When the numerical control routing machine performs routing and cutting on the Cth side of the circuit board of the Nth type until the remaining set distance between the Cth side of the circuit board of the Nth type and the large board material, similarly, this set distance is within a few millimeters, such as within 10 mm. Start the pressing foot device of the numerical control routing machine to press the large board material and the circuit board of the Nth type tightly on the workbench 3 at the same time, and then adjust the routing and cutting speed of the numerical control routing machine until the Cth side of the circuit board of the Nth type is completely separated from the large board material. Similarly, the specific operation steps are to ensure that the soft brush and the like do not move, press the large board material and the circuit board of the Nth type tightly on the workbench 3, slow down the routing and cutting speed of the numerical control routing machine, and ensure that there are no obvious bumps at the break point where the circuit board of the Nth type being routed and cut is finally broken;

[0055] S7. Pause the numerical control routing machine and remove the circuit board of the Nth type;

[0056] S8. Remove the remaining waste material of the large board material after routing and cutting on the workbench 3 of the numerical control routing machine, and continue to start the numerical control routing machine until all types of circuit boards are completely routed and cut.

[0057] In the present invention, one or more large board materials can be selected for processing according to requirements. The PCB processing technology without punching internal dowel pins 100 of the present invention only aims at the step of cutting multiple different types or a single type of PCBs from the large board material. Before this, it also includes the step of cutting the inner groove of the PCB. In order to ensure the quality of the cutting process, the existing processing method of positioning with punching internal dowel pins 100 is still selected for the cutting process of the inner groove of the PCB.

[0058] Embodiment 2

[0059] Embodiment 1 is a processing technology for different types of PCBs on a large board material. If there is only one type of PCB on the large board material, the PCB processing technology without punching internal dowel pins 100 of the present invention depends on a numerical control router and the workbench 3 of the numerical control router. There are at least two groups of peripheral positioning holes 4 on the workbench 3 of the numerical control router. The two groups of peripheral positioning holes 4 enclose a positioning angle, which can be various angles, such as acute angles, right angles, and obtuse angles, etc. There are fixture dowel pins in the peripheral positioning holes 4, including the following steps:

[0060] S1. Take the large board material and position the large board material on the workbench 3 of the numerical control router through the fixture dowel pins of the two groups of peripheral positioning holes 4;

[0061] S2. Use the numerical control router to cut the large board material in the direction from far away from the positioning angle to close to the positioning angle to cut out at least one first type of PCB 1. Among them, the first type of PCB 1 has A + B sides. The A-th side of the first type of PCB 1 is the side closest to the positioning angle. The numerical control router first cuts the B sides of the first type of PCB 1, and then the numerical control router cuts the A-th side of the first type of PCB 1. A is 1, and B is a positive integer greater than or equal to 2;

[0062] S3. When the numerical control router cuts the A-th side of the first type of PCB 1 until the remaining set distance between the A-th side of the first type of PCB 1 and the large board material, start the pressing foot device of the numerical control router to press the large board material and the first type of PCB 1 tightly on the workbench 3 at the same time, and then adjust the cutting speed of the numerical control router until the A-th side of the first type of PCB 1 is completely separated from the large board material;

[0063] S4. Pause the numerical control router and remove the first type of PCB 1;

[0064] S5. Remove the waste remaining on the large board material after routing on the workbench 3 of the CNC routing machine. In this embodiment, there is only one type of circuit board, and the operation steps are the same as those in the processing of the first type of circuit board in Embodiment 1. Specifically, when the first type of circuit board is a quadrilateral circuit board, B is 3, and the B sides of the first type of circuit board are B1 side, B2 side, and B3 side respectively. Among them, B1 side and B3 side are connected to both ends of the A-th side of the first type of circuit board, and B2 side is located between B1 side and B3 side. In step S2, the CNC routing machine first selects the starting point of the arc or the starting point of the straight line at the included angle between the A-th side and B1 side of the first type of circuit board, then the CNC routing machine processes B1 side of the first type of circuit board, then the CNC routing machine processes B2 side of the first type of circuit board, then the CNC routing machine processes B3 side of the first type of circuit board, then the CNC routing machine finishes retracting the tool at the included angle between the A-th side and B3 side of the first type of circuit board, pauses the CNC routing machine, and then starts the CNC routing machine to perform routing processing on the A-th side of the first type of circuit board. In step S2 of this embodiment, when there are two or more first type of circuit boards, the CNC routing machine first sequentially finishes routing processing on the B-th sides of all the first type of circuit boards and then sequentially finishes routing processing on the A-th sides of all the first type of circuit boards.

[0065] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the present invention. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention all belong to the protection scope of the technical solution of the present invention.

Claims

1. A circuit board processing technology without internal pins, which is completed by a CNC gong machine and a workbench of the CNC gong machine. The workbench of the CNC gong machine is provided with at least two groups of peripheral positioning holes, which enclose a positioning angle, and a fixture pin is provided in the peripheral positioning hole, characterized in that: The following steps are involved: S1, take a large plate and position the large plate on the workbench of the CNC gong machine through two sets of jig pins with peripheral positioning holes; S2. Use a CNC gong machine to perform gong cutting on the large sheet material in a direction from away from the positioning angle to close to the positioning angle to gong cut out at least one first type of circuit board, wherein the first type of circuit board has A+B edges, the Ath edge of the first type of circuit board is the edge closest to the positioning angle, the CNC gong machine first performs gong cutting on the Bth edge of the first type of circuit board, and then the CNC gong machine performs gong cutting on the Ath edge of the first type of circuit board, where A is 1 and B is a positive integer greater than or equal to 2; S3, when the CNC gong machine performs gong cutting on the Ath edge of the first type of circuit board to the remaining set distance between the Ath edge of the first type of circuit board and the large plate, the presser foot device of the CNC gong machine is started to simultaneously press the large plate and the first type of circuit board on the workbench, and then the gong cutting speed of the CNC gong machine is adjusted until the Ath edge of the first type of circuit board is completely separated from the large plate; S4, pausing the CNC gong machine and removing the first type of circuit board; S5. Use a CNC gong machine to perform gong cutting on the large sheet material in a direction from away from the positioning angle to close to the positioning angle to gong cut out at least one Nth type of circuit board, wherein the Nth type of circuit board has C+D edges, the Cth edge of the Nth type of circuit board is the edge closest to the positioning angle, the CNC gong machine first performs gong cutting on the Dth edge of the Nth type of circuit board, and then the CNC gong machine performs gong cutting on the Cth edge of the Nth type of circuit board, C is 1, D is a positive integer greater than or equal to 2, and N is a positive integer greater than or equal to 2; S6, when the CNC gong machine performs gong cutting on the Cth edge of the Nth type of circuit board to the remaining set distance between the Cth edge of the Nth type of circuit board and the large plate, the presser foot device of the CNC gong machine is started to press the large plate and the Nth type of circuit board on the workbench at the same time, and then the gong cutting speed of the CNC gong machine is adjusted until the Cth edge of the Nth type of circuit board is completely separated from the large plate; S7, pause the CNC gong machine and remove the Nth type of circuit board; S8. Remove the remaining waste of the large plate material after gong cutting on the workbench of the CNC gong machine, and continue to start the CNC gong machine until all types of circuit boards are gong cut.

2. The circuit board processing technology without inner pins according to claim 1 is characterized in that: The positioning angle is a right angle.

3. The circuit board processing technology without inner pins according to claim 1 is characterized in that: When the first type of circuit board is a quadrilateral circuit board, B is 3 and the B sides of the first type of circuit board are B1 side, B2 side and B3 side, wherein B1 side and B3 side are connected to the two ends of the Ath side of the first type of circuit board, and B2 side is located between B1 side and B3 side. In S2, the CNC gong machine first selects an arc starting point or a straight line starting point at the angle between the Ath side and the B1 side of the first type of circuit board to cut, and then the CNC gong machine processes the B1 side of the first type of circuit board, then the CNC gong machine processes the B2 side of the first type of circuit board, and then the CNC gong machine processes the B3 side of the first type of circuit board, and then the CNC gong machine completes the knife closing at the angle between the Ath side and the B3 side of the first type of circuit board, pauses the CNC gong machine, and then starts the CNC gong machine to perform gong cutting on the Ath side of the first type of circuit board; When the Nth type of circuit board is a quadrilateral circuit board, D is 3 and the D sides of the Nth type of circuit board are D1, D2 and D3 respectively, wherein D1 and D3 are connected to the two ends of the Cth side of the Nth type of circuit board, and D2 is located between D1 and D3. In S5, the CNC gong machine first selects an arc starting point or a straight line starting point at the angle between the Cth side and the D1 side of the Nth type of circuit board to cut, and then the CNC gong machine processes the D1 side of the Nth type of circuit board, then the CNC gong machine processes the D2 side of the Nth type of circuit board, and then the CNC gong machine processes the D3 side of the Nth type of circuit board, and then the CNC gong machine completes the knife closing at the angle between the Cth side and the D3 side of the Nth type of circuit board, pauses the CNC gong machine, and then starts the CNC gong machine to perform gong cutting on the Cth side of the Nth type of circuit board.

4. The circuit board processing technology without inner pins according to claim 1 is characterized in that: When there are two or more first-type circuit boards in S2, the CNC gong machine first completes gong cutting processing on the Bth edge of all first-type circuit boards in sequence, and then completes gong cutting processing on the Ath edge of all first-type circuit boards in sequence; When there are two or more Nth type circuit boards in S5, the CNC guillotine cutting machine first sequentially completes the guillotine cutting process on the Dth edges of all the Nth type circuit boards and then sequentially completes the guillotine cutting process on the Cth edges of all the Nth type circuit boards.

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