PCB drilling machine and PCB drilling method

Abstract

The invention belongs to the technical field of PCB machining, and particularly relates to a PCB drilling method and a PCB drilling machine. The PCB drilling method comprises the steps that a first positioning hole is formed in a base plate, and a first positioning piece is inserted into the base plate; the cover plate and the base plate are clamped on the two opposite sides of the PCB in the first direction, the base plate, the PCB and the cover plate are encapsulated, and a combination formed by stacking the cover plate, the PCB and the base plate is obtained; a second positioning hole is formed in the non-metal plate, and a second positioning piece is inserted into the non-metal plate; the combined body is transferred to the non-metal plate, the first positioning piece is inserted into the second positioning hole, and the second positioning piece is inserted into the first positioning hole; and drilling holes in the combined body along the first direction so as to realize drilling holes in the PCB. According to the embodiment, pre-positioning of the assembly is achieved through cooperation of the second positioning hole and the first positioning piece, precise positioning of the assembly is achieved through cooperation of the first positioning hole and the second positioning piece, the nonmetal plate cannot expand with heat and contract with cold, positioning deviation of the first positioning piece can be avoided, and the drilling precision is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of PCB board processing, and in particular relates to a PCB drilling machine and a PCB drilling method. Background Art

[0002] PCB (Printed Circuit Board) is an important component of the electronics industry. It is used to achieve electrical connections between components in the circuit. Its application areas are becoming more and more extensive, and the requirements for drilling holes in PCB boards are becoming higher and higher.

[0003] At present, when a PCB board is drilled, a pad, a PCB board and a cover plate are stacked and fixed by two positioning pieces. After the pad and the cover plate are bonded together with tape, the three layers of the board are fixed on the table of a drilling machine. After the positioning pieces are clamped by a mechanical structure on the table for positioning, drilling begins.

[0004] However, when the temperature changes during the operation of the drilling machine, the mechanical structure will expand and contract due to heat, resulting in deviations in the positioning of the positioning parts, which in turn leads to low drilling accuracy of the drilling machine, making it unsuitable for the processing of high-precision PCB products. Summary of the invention

[0005] The technical problem to be solved by the present invention is: to provide a PCB drilling machine and a PCB drilling method in view of the problem that the drilling accuracy of the existing drilling machine is relatively low.

[0006] In order to solve the above technical problems, on the one hand, an embodiment of the present invention provides a PCB drilling method, comprising: Form a first positioning hole on the backing plate, and insert the first positioning member into the backing plate; Clamping the cover plate and the backing plate on opposite sides of the PCB along a first direction, and encapsulating the backing plate, the PCB and the cover plate with rubber to obtain a stacked assembly of the cover plate, the PCB and the backing plate; forming a second positioning hole on the non-metal plate and inserting the second positioning member into the non-metal plate; Transferring the assembly to the non-metal plate, inserting the first positioning member into the second positioning hole, and inserting the second positioning member into the first positioning hole; A hole is drilled on the assembly along the first direction to achieve drilling on the PCB board.

[0007] Optionally, before the step of inserting the second positioning member into the first positioning hole, the method further includes: forming a third positioning hole on the PCB board; The step of inserting the second positioning member into the first positioning hole specifically includes: Insert the second positioning member into the first positioning hole and into the third positioning hole.

[0008] Optionally, the step of transferring the assembly to the non-metal plate, inserting the first positioning member into the second positioning hole, and inserting the second positioning member into the first positioning hole comprises: The conveying mechanism on the workbench rises, driving the assembly to move in a plane perpendicular to the first direction, so that the first positioning member is aligned with the second positioning hole, and the second positioning member is aligned with the first positioning hole; The conveying mechanism descends, so that the first positioning member is inserted into the second positioning hole, and the second positioning member is inserted into the first positioning hole.

[0009] Optionally, before clamping the cover plate and the backing plate along the first direction at opposite sides of the PCB in the thickness direction, the method further includes: forming a first connection hole on the backing plate; forming a second connection hole on the PCB board; The first positioning member is passed through the first connecting hole and the second connecting hole to fix the pad and the PCB board.

[0010] Optionally, after drilling a hole in the assembly along the first direction, the method further comprises: separating the assembly from the non-metallic plate; The conveying mechanism drives the assembly to leave the workbench.

[0011] On the other hand, an embodiment of the present invention provides a PCB drilling machine, which performs the above-mentioned PCB drilling method to process a PCB board, comprising a workbench, a pad, a cover plate and a non-metallic plate, wherein the non-metallic plate is mounted on the workbench, the cover plate and the pad are clamped on opposite sides of the PCB board along a first direction so that the cover plate, the PCB board and the pad are stacked to form a combination, and the non-metallic plate is arranged on a side of the pad away from the cover plate; The PCB drilling machine further includes a first positioning member and a second positioning member, wherein the first positioning member is at least provided through the backing plate and the PCB board to combine the backing plate with the PCB board, and the second positioning member is provided through the non-metallic plate; The backing plate is provided with a first positioning hole, the non-metal plate is provided with a second positioning hole, the first positioning member is inserted into the second positioning hole, and the second positioning member is inserted into the first positioning hole, so as to position the combination on the non-metal plate.

[0012] Optionally, the first positioning members are provided in plurality, the pad has a first side and a second side opposite to each other in the second direction, at least one of the first positioning members is provided on the first side, and at least one of the first positioning members is provided on the second side; The non-metal plate is provided with a plurality of the second positioning holes, and the plurality of the first positioning members are provided correspondingly to the plurality of the second positioning holes; The second direction intersects the first direction.

[0013] Optionally, a plurality of the second positioning members are provided, a plurality of the first positioning holes are provided, and the plurality of the second positioning members are provided correspondingly to the plurality of the first positioning holes.

[0014] Optionally, there are a plurality of corners, each of which is provided with at least one second positioning member. Optionally, the non-metal plate has two opposite side edges, one of which is provided with at least one second positioning member, and the other of which is provided with at least two second positioning members.

[0015] Optionally, the first positioning hole is a circular hole, the second positioning piece is cylindrical, the diameter of the first positioning hole is larger than the diameter of the second positioning piece, and the difference between the diameter of the first positioning hole and the diameter of the second positioning piece is 0-0.025 mm.

[0016] Optionally, the second positioning hole is a circular hole, the first positioning piece is cylindrical, the diameter of the second positioning hole is larger than the diameter of the first positioning piece, and the difference between the diameter of the second positioning hole and the diameter of the first positioning piece is 0-0.025 mm.

[0017] Optionally, the PCB drilling machine also includes a conveying mechanism installed on the workbench, and the conveying mechanism includes a first roller assembly and a second roller assembly, the first roller assembly can drive the combination to move along a second direction, and the second roller assembly can drive the combination to move along a third direction; wherein the second direction and the third direction intersect.

[0018] Optionally, the conveying mechanism further comprises a support seat, the first roller assembly comprises a plurality of first rollers, the second roller assembly comprises a plurality of second rollers, and along the second direction, the plurality of first rollers and the plurality of second rollers are alternately arranged on the support seat; A plurality of the second rollers are liftably connected to the support base; Alternatively, a plurality of the second rollers are connected to the support base in a manner that allows them to be lifted and rotatable.

[0019] Optionally, the non-metallic plate includes a first sub-plate and a second sub-plate that are spaced apart from each other, and the conveying mechanism is located between the first sub-plate and the second sub-plate.

[0020] Optionally, the PCB drilling machine further comprises a plurality of lifting mechanisms, which are arranged at intervals on the workbench, and are used to drive the assembly to separate from the non-metallic plate, so that the first positioning member is disengaged from the second positioning hole and the second positioning member is disengaged from the first positioning hole; The lifting mechanism includes a lifting plate and a lifting pin arranged on the lifting plate, a first through hole is arranged on the workbench, a second through hole corresponding to the second through hole is arranged on the non-metallic plate, and the lifting plate can move along the first direction so that the lifting pin passes through the first through hole and the second through hole in sequence and abuts against the combination.

[0021] The PCB drilling method provided by the embodiment of the present invention fixes the non-metallic plate on the workbench of the drilling machine, and after the backing plate, PCB board and cover plate are encapsulated to form an assembly, it is transferred to the non-metallic plate, and there is no need to position them layer by layer on the non-metallic plate, so the production efficiency is high. The pre-positioning function of the assembly is realized by the cooperation of the second positioning hole and the first positioning member, and the precise positioning of the assembly and the non-metallic plate is realized by the plug-in cooperation of the first positioning hole and the second positioning member. Since the non-metallic plate will not expand or contract due to heat, the position deviation of the positioning of the first positioning member on the assembly can be avoided, and the error during drilling is reduced, thereby improving the drilling accuracy of the drilling machine, and is suitable for the processing of high-layer and high-precision PCB products. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of a combination and a non-metallic plate provided by an embodiment of the present invention; Figure 2 It is one of the schematic diagrams of a pad provided by an embodiment of the present invention; Figure 3 This is a schematic diagram of a PCB board provided in one embodiment of the present invention; Figure 4 This is a second schematic diagram of a pad provided by an embodiment of the present invention; Figure 5 This is a third schematic diagram of a pad provided by an embodiment of the present invention; Figure 6 is a schematic diagram of a spindle assembly provided by an embodiment of the present invention; Figure 7 is a schematic diagram of a lifting mechanism and a non-metallic plate provided in one embodiment of the present invention; Figure 8 is a schematic diagram of a lifting mechanism provided by an embodiment of the present invention; Fig. 9is a schematic diagram of a transmission mechanism provided by an embodiment of the present invention; Fig.10 It is a flow chart of a PCB drilling method provided by one embodiment of the present invention.

[0023] The reference numerals in the specification are as follows: 1. pad; 11. first positioning member; 12. first positioning hole; 13. first side edge; 14. second side edge; 15. first connecting hole; 2. PCB board; 21. third positioning hole; 22. second connecting hole; 3. Cover plate; 4. non-metallic plate; 41. second positioning member; 42. second positioning hole; 4a. first sub-plate; 4b. second sub-plate; 5. Spindle assembly; 51. Plug-in assembly; 6. Lifting mechanism; 61. Lifting plate; 62. Lifting plate pin; 7. Workbench; 8. Conveying mechanism; 81. First roller; 82. Second roller. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] like Figures 1 to 9 As shown, a PCB drilling machine provided by one embodiment of the present invention is used for processing PCB boards. The PCB drilling machine includes a workbench 7, a pad 1, a cover plate 3 and a non-metallic plate 4. The non-metallic plate 4 is installed on the workbench 7. The cover plate 3 and the pad 1 are suitable for clamping on opposite sides of the thickness direction of the PCB board 2 along a first direction so that the cover plate 3, the PCB board 2 and the pad 1 are stacked to form a combination, wherein the first direction is the stacking direction of the cover plate 3, the PCB board 2 and the pad 1.

[0026] The PCB drilling machine further includes a first positioning member 11 and a second positioning member 41 . The first positioning member 11 is at least penetrated through the backing plate 1 and the PCB board 2 to combine the backing plate 1 with the PCB board 2 . The second positioning member 41 is penetrated through the non-metallic plate 4 .

[0027] The non-metallic plate 4 is arranged on the side of the pad 1 away from the cover plate 3. The pad 1 is closer to the non-metallic plate 4 than the cover plate 3. A first positioning hole 12 is arranged on the pad 1, and a second positioning hole 42 is arranged on the non-metallic plate 4. The assembly is placed above the non-metallic plate 4, the first positioning piece 11 is aligned with the second positioning hole 42, and the second positioning piece 41 is aligned with the first positioning hole 12. The assembly is pressed down so that the first positioning piece 11 is inserted into the second positioning hole 42, and the second positioning piece 41 is inserted into the first positioning hole 12, so that the assembly is positioned and installed on the non-metallic plate 4, and the assembly is drilled by a drilling machine.

[0028] It should be noted that the non-metal plate 4 can be reused. After the assembly is processed, it is sent to the next process to continue positioning the next assembly on the non-metal plate 4.

[0029] In this embodiment, the non-metallic plate 4 is arranged on the table surface of the workbench 7 of the drilling machine. When the PCB board 2 is drilling, the assembly is moved above the non-metallic plate 4, and the pre-positioning function of the assembly is realized by the cooperation of the second positioning hole 42 and the first positioning piece 11. The first positioning hole 12 is set on the pad 1, and the precise positioning of the assembly 4 is realized by the plug-in cooperation of the first positioning hole 12 and the second positioning piece 41. Since the non-metallic plate 4 will not expand or contract due to heat, the position deviation of the first positioning piece 11 on the assembly can be avoided. After the assembly is accurately positioned by the first positioning hole 12 and the second positioning piece 41, the error is reduced during drilling, thereby improving the drilling accuracy of the drilling machine, which is suitable for the processing of high-layer and high-precision PCB products.

[0030] In one embodiment, the non-metallic plate 4 is a polymer plate. Preferably, the non-metallic plate 4 is a bakelite plate.

[0031] In one embodiment, a plurality of first positioning members 11 are provided, and a plurality of second positioning holes 42 are provided on the non-metallic plate 4. The plurality of first positioning members 11 and the plurality of second positioning holes 42 are arranged one by one in the first direction, and each first positioning member 11 can be inserted into the corresponding second positioning hole 42 to realize the pre-positioning function.

[0032] In one embodiment, if Figure 2 As shown, the pad 1 has a first side 13 and a second side 14 relative to each other in the second direction, at least one first positioning member 11 is arranged on the first side 13, and at least one first positioning member 11 is arranged on the second side 14. By arranging a first positioning member 11 on each of the two relatively arranged side edges, the deviation of the relative position of the pad 1 and the bakelite board can be reduced to achieve pre-positioning.

[0033] The pad 1 is rectangular, the second direction intersects the first direction, the first direction is the Z direction, and the second direction is the X direction or the Y direction.

[0034] In a specific embodiment, two first positioning members 11 are provided, and one first positioning member 11 is provided on each of the first side 13 and the second side 14. Correspondingly, two second positioning holes 42 are provided, and the first positioning member 11 on the first side 13 is inserted into one of the second positioning holes 42, and the first positioning member 11 on the second side 14 is inserted into the other second positioning hole 42, which can prevent the combination and the non-metallic plate 4 from rotating relative to each other in a plane perpendicular to the first direction and causing dislocation.

[0035] In one embodiment, the pad 1 and the PCB board 2 can be fixedly connected by the first positioning member 11. After the pad 1, the PCB board 2 and the cover plate 3 are stacked in sequence, the three layers of sheet materials can be wrapped together by a laminating machine to form a combination.

[0036] Among them, Figure 2 As shown, a first connecting hole 15 is provided on the pad 1, a second connecting hole 22 is provided on the PCB board 2, and the first positioning member 11 passes through the second connecting hole 22 and the first connecting hole 15 in sequence. When cooperating with the second positioning hole 42, the portion of the first positioning member 11 that exceeds the pad 1 is inserted into the second positioning hole 42.

[0037] Preferably, the first connecting hole 15 and the second connecting hole 22 are circular holes, the first positioning member 11 is a pin, the position of the first connecting hole 15 and the position of the second connecting hole 22 are correspondingly arranged in the first direction, so that the first connecting hole 15 and the second connecting hole 22 are connected, the outer diameter of the pin is slightly larger than the diameter of the first connecting hole 15, and the outer diameter of the pin is slightly larger than the diameter of the second connecting hole 22, so that a tight fit between the pin and the first connecting hole 15 and between the pin and the second connecting hole 22 is achieved, thereby achieving a fixed connection between the pad 1 and the PCB board 2.

[0038] In one embodiment, the cover plate 3 is an aluminum plate, and a third connection hole corresponding to the second connection hole 22 may be provided on the cover plate 3. In this case, the pin passes through the third connection hole, the second connection hole 22 and the first connection hole 15 in sequence.

[0039] In one embodiment, a plurality of second positioning members 41 are provided, and a plurality of first positioning holes 12 are provided. The plurality of second positioning members 41 are provided in a one-to-one correspondence with the plurality of first positioning holes 12 in the first direction, and each second positioning member 41 is plugged into and fits in the corresponding first positioning hole 12. "Multiple" refers to two or more. After the pre-positioning is completed, by providing a plurality of second positioning members 41, a limit can be formed between the backing plate 1 and the bakelite board in both the length direction and the width direction of the backing plate 1, so that the assembly can be positioned on the bakelite board with high precision, thereby improving the accuracy of the drilling position.

[0040] Preferably, at least three second positioning members 41 are provided, and a plane can be formed by the three second positioning members 41, thereby improving the positioning accuracy of the pad 1 and the bakelite board.

[0041] In one embodiment, the non-metallic plate 4 has a plurality of corners, and at least one second positioning member 41 is disposed at each corner, so that the non-metallic plate 4 can be accurately positioned with the assembly in all directions.

[0042] Specifically, Figure 4 As shown, the pad 1 is rectangular. When the first positioning hole 12 and the second positioning piece 41 are plugged into each other, a second positioning piece 41 is provided at each corner of the non-metallic plate 4, and a total of four second positioning pieces 41 are provided. A first positioning hole 12 is provided at each corner of the pad 1, and four first positioning holes 12 are provided.

[0043] In one embodiment, the non-metallic plate 4 has two oppositely disposed sides, one side is provided with at least one second positioning member 41, and the other side is provided with at least two second positioning members. Such multi-directional positioning can greatly improve the accuracy of the installation between the non-metallic plate 4 and the assembly, ensure the matching accuracy between the non-metallic plate 4 and the assembly, and reduce the accumulation of installation deviations.

[0044] Specifically, the non-metal plate 4 has a third side and a fourth side, one second positioning member 41 is arranged on the third side, and two second positioning members 41 are arranged on the fourth side. Preferably, the third side and the fourth side are arranged opposite to each other in the length or width direction of the pad 1. Accordingly, Figure 2 As shown, a first positioning hole 12 is arranged on the first side of the backing plate 1 , and two first positioning holes 12 are arranged on the second side of the backing plate 1 .

[0045] Furthermore, a second positioning member 41 is provided at each corner, the third side and the fourth side of the non-metal. Figure 5 As shown, a first positioning hole 12 is provided at each corner, the first side edge and the second side edge of the pad 1 .

[0046] In one embodiment, the second positioning hole 42 is a round hole, the first positioning member 11 is cylindrical, the diameter of the second positioning hole 42 is larger than the diameter of the first positioning member 11, and the difference between the diameter of the second positioning hole 42 and the diameter of the first positioning member 11 is 0-0.025 mm. Within the above range, the first positioning member 11 has a better positioning function when inserted into the second positioning hole 42, and it is not easy to cause damage to the first positioning member 11 during plug-in matching and when drilling is completed to separate the assembly and the non-metallic plate 4.

[0047] In one embodiment, the first positioning hole 12 is a round hole, the second positioning member 41 is cylindrical, the diameter of the first positioning hole 12 is larger than the diameter of the second positioning member 41, and the difference between the diameter of the first positioning hole 12 and the diameter of the second positioning member 41 is 0-0.025 mm. The diameter difference is set within the above range, and when a plurality of second positioning members 41 are plugged into the corresponding first positioning holes 12, the pad 1 has a very small shaking range relative to the bakelite board on a plane perpendicular to the first direction, so that the assembly has a higher positioning accuracy, and thus has a higher drilling accuracy when drilling.

[0048] In one embodiment, the PCB drilling machine also includes a conveying mechanism 8 installed on the workbench 7, and the conveying mechanism 8 includes a first roller assembly and a second roller assembly. The first roller assembly can drive the combination to move along the second direction, and the second roller assembly can drive the combination to move along the third direction; wherein the second direction and the third direction intersect.

[0049] On the workbench 7, the second direction is the front-back direction of the workbench 7, and the third direction is the left-right direction of the workbench 7. In the rectangular coordinate system established on the workbench 7, the second direction is the Y direction, and the third direction is the X direction. In the process of positioning the assembly on the non-metallic plate 4, the assembly is driven to move in the second direction by the first roller assembly, and the assembly is driven to move in the third direction by the second roller assembly, so that the assembly can be moved directly above the non-metallic plate 4, and at the same time, the first positioning member 11 is aligned with the second positioning hole 42 on the non-metallic plate 4, and the second positioning member 41 is aligned with the first positioning hole 12, and force is applied to the assembly, so that the first positioning member 11 is inserted into the second positioning hole 42, and the second positioning member 41 is inserted into the first positioning hole 12.

[0050] In one embodiment, the conveying mechanism 8 also includes a support seat, the first roller assembly includes a plurality of first rollers 81, the second roller assembly includes a plurality of second rollers 82, and along the second direction, the plurality of first rollers 81 and the plurality of second rollers 82 are alternately arranged on the support seat.

[0051] The plurality of second rollers 82 are connected to the support base in a liftable manner, or the plurality of second rollers 82 are connected to the support base in a liftable and rotatable manner. The liftable connection of the second rollers 82 enables the second rollers 82 to rise to a suitable height, and can independently drive the assembly, and can reduce the interference of the first rollers 81 with the movement of the assembly.

[0052] As an example, the first roller 81 can drive the assembly to move in the second direction, and the second roller 82 can drive the assembly to move in the third direction. When the first roller 81 rolls, the second roller 82 cannot rotate, so that the assembly moves in the second direction. A plurality of second rollers 82 are connected to the support seat in a movably movable manner. When it is necessary to move in the third direction, the second roller 82 is lifted so that the second roller 82 contacts the assembly, driving the assembly to move.

[0053] In another example, the first roller 81 and the second roller 82 can drive the assembly to move in the second direction. The second roller 82 can be raised and lowered and rotated. When it is necessary to move in the third direction, the second roller 82 is raised and rotated to change the driving direction of the second roller 82, so that the second roller 82 can drive the assembly to move in the third direction.

[0054] In one embodiment, the non-metal plate 4 includes a first sub-plate 4a and a second sub-plate 4b, the first sub-plate 4a and the second sub-plate 4b are spaced apart in the third direction, and the conveying mechanism 8 is located between the first sub-plate 4a and the second sub-plate 4b. In this way, when the second roller 82 on the support seat is raised or lowered, the second roller 82 can be avoided by the gap between the first sub-plate 4a and the second sub-plate 4b.

[0055] In other embodiments, the number of sub-plates of the non-metal plate 4 is not limited to two, and the number of sub-plates is determined according to the number of conveying mechanisms.

[0056] In one embodiment, the PCB drilling machine further includes a spindle assembly 5, the non-metallic plate 4 is disposed on a workbench 7, and the spindle assembly 5 is used to drill holes on the assembly along a first direction to achieve drilling on the PCB.

[0057] The spindle assembly 5 is provided with a plug-in assembly 51, which can grab the second positioning member and automatically press the second positioning member into the drilled non-metallic plate 4. When the assembly is positioned with the non-metallic plate 4, the plug-in assembly 51 presses the assembly so that the first positioning member 11 is inserted into the second positioning hole 42, and the second positioning member 41 is inserted into the first positioning hole 12.

[0058] In one embodiment, the PCB drilling machine also includes a plurality of lifting mechanisms 6, which are spaced apart on the workbench 7. The lifting mechanisms 6 are used to drive the assembly to separate from the non-metallic plate 4, so that the first positioning member 11 is disengaged from the second positioning hole 42 and the second positioning member 41 is disengaged from the first positioning hole 12, thereby allowing the assembly to leave the non-metallic plate 4 after processing, making it easier to position the next assembly.

[0059] The lifting mechanisms 6 can be arranged in groups on the non-metallic plate 4 according to the size of the PCB board. When the PCB is lifted, the corresponding lifting mechanisms 6 are opened to realize the lifting function.

[0060] The lifting mechanism 6 includes a lifting plate 61 and a lifting pin 62 arranged on the lifting plate 61. A first through hole is arranged on the workbench 7, and a second through hole corresponding to the second through hole is arranged on the non-metallic plate. The lifting plate can move up and down along the first direction so that the lifting pin 62 passes through the first through hole and the second through hole in turn and abuts against the assembly, thereby lifting the assembly and separating it from the non-metallic plate 4.

[0061] On the other hand, Fig.10 As shown, an embodiment of the present invention provides a PCB drilling method, comprising the following steps: S1, forming a first positioning hole 12 on the backing plate 1, and inserting the first positioning member 11 into the backing plate 1; S2, clamping the cover plate 3 and the pad plate 1 along the first direction at the opposite sides of the thickness direction of the PCB board 2, so that the cover plate 3, the PCB board 2 and the pad plate 1 are stacked in sequence, and the pad plate 1, the PCB board 2 and the cover plate 3 are coated with glue by a PIN coating machine, so that the stacked cover plate 3, the PCB board 2 and the pad plate 1 are wrapped together to form a combination; S3, forming a second positioning hole 42 on the non-metallic plate 4, and inserting the second positioning member 41 into the non-metallic plate 4; S4, the assembly is transferred to the top of the non-metallic plate 4 by the conveying mechanism 8, the first positioning member 11 is aligned with the second positioning hole 42, the second positioning member 41 is aligned with the first positioning hole 12, and the first positioning member 11 is inserted into the second positioning hole 42 by the pressing pin function of the plug-in assembly 51, and the second positioning member 41 is inserted into the first positioning hole 12; S5 . The spindle assembly 5 of the drilling machine drills holes on the assembly along the first direction to drill holes on the PCB board 2 .

[0062] The non-metallic plate 4 is fixed on the workbench 7 of the drilling machine by screws, and after the backing plate 1, the PCB board 2 and the cover plate 3 are coated with rubber to form an assembly, they are transferred to the non-metallic plate 4. There is no need to position them layer by layer on the non-metallic plate 4, and the production efficiency is high. The pre-positioning function of the assembly is realized by the cooperation of the second positioning hole 42 and the first positioning member 11, and the precise positioning of the assembly and the non-metallic plate 4 is realized by the plug-in cooperation of the first positioning hole 12 and the second positioning member 41. Since the non-metallic plate 4 will not expand or contract due to heat, the position deviation of the positioning of the first positioning member 11 on the assembly can be avoided, and the error during drilling is reduced, thereby improving the drilling accuracy of the drilling machine, which is suitable for the processing of high-layer and high-precision PCB products.

[0063] In one embodiment, if Fig. 9As shown, the first roller assembly of the conveying mechanism 8 includes a plurality of first rollers 81, and the second roller assembly includes a plurality of second rollers 82. The rotation direction of the first rollers 81 is different from the rotation direction of the second rollers 82. For example, on the workbench 7, the first rollers 81 can drive the assembly to move in the front-back direction, and the second rollers 82 can drive the assembly to move in the left-right direction, so that the first positioning member 11 is aligned with the second positioning hole 42, and the second positioning member 41 is aligned with the first positioning hole 12.

[0064] In one embodiment, the PCB drilling method further includes: In step S1, a third positioning hole 21 is drilled on the PCB board 2, and the third positioning hole 21 is directly opposite to the first positioning hole 12 in the first direction; In step S3 , while the second positioning member 41 is inserted into the first positioning hole 12 , the second positioning member 41 is inserted into the third positioning hole 21 to improve the positioning effect of the second positioning member 41 and the assembly.

[0065] In one embodiment, the PCB drilling machine further includes a conveying mechanism 8 mounted on the workbench 7, and the steps of moving the assembly to the top of the non-metallic plate 4, inserting the first positioning member 11 into the second positioning hole 42, and inserting the second positioning member 41 into the first positioning hole 12 specifically include: The conveying mechanism 8 on the workbench 7 rises, driving the conveying mechanism 8 to move in a plane perpendicular to the first direction, so that the first positioning member 11 is aligned with the second positioning hole 42, and the second positioning member 41 is aligned with the first positioning hole 12; The conveying mechanism descends, and the first positioning member 11 is inserted into the second positioning hole 42 through the pin pressing function of the plug-in assembly 51 , and the second positioning member 41 is inserted into the first positioning hole 12 .

[0066] By driving the assembly to move through the transmission mechanism 8, the precise position adjustment of the assembly can be achieved, ensuring that the first positioning member can accurately align with the second positioning hole, and the second positioning member can also align with the first positioning hole.

[0067] In one embodiment, if Figure 2 , Figure 3 As shown, before the step of clamping the cover plate 3 and the backing plate 1 on opposite sides of the PCB board 2 along the first direction, the method further includes: A first connecting hole 15 is formed on the backing plate 1; A second connection hole 22 is formed on the PCB board 2; The first positioning member 11 passes through the first connection hole 15 and the second connection hole 22, and the first positioning member 11 is tightly matched with the first connection hole 15, and the first positioning member 11 is tightly matched with the second connection hole 22 to fix the pad 1 and the PCB board 2. The first positioning member 11 is a pin, and the size of the first positioning member 11 in the first direction is greater than the sum of the thickness of the pad 1 and the thickness of the PCB board 2, and the portion of the first positioning member 11 that exceeds the pad 1 can be plugged and matched in the second positioning hole 42.

[0068] In one embodiment, if Figure 7 , Fig.10 As shown, after the step of drilling a hole in the assembly along the first direction, the process further includes: separating the assembly from the non-metallic plate 4 by means of a lifting mechanism 6, and then sending the assembly to the next process by means of a conveying mechanism 8. After the assembly and the non-metallic plate 4 are separated, the non-metallic plate 4 can be reused to continue positioning the next assembly.

[0069] Among them, Figure 8 As shown, the lifting mechanism 6 includes a lifting plate 61 and a plurality of lifting pins 62 connected to the lifting plate 61. The lifting mechanism 6 is arranged below the workbench 7. The workbench 7 is provided with a first through hole, and the non-metallic plate is provided with a second through hole corresponding to the second through hole. The lifting plate can move up and down along the first direction so that the lifting pins 62 pass through the first through hole and the second through hole in sequence and abut against the assembly to lift the assembly, thereby enabling the assembly to be separated from the non-metallic plate 4.

[0070] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A PCB drilling method, characterized in that: include: Form a first positioning hole on the backing plate, and insert the first positioning member into the backing plate; Clamping the cover plate and the backing plate on opposite sides of the PCB along a first direction, and encapsulating the backing plate, the PCB and the cover plate with rubber to obtain a stacked assembly of the cover plate, the PCB and the backing plate; forming a second positioning hole on the non-metal plate and inserting the second positioning member into the non-metal plate; Transferring the assembly to the non-metal plate, inserting the first positioning member into the second positioning hole, and inserting the second positioning member into the first positioning hole; A hole is drilled on the assembly along the first direction to achieve drilling on the PCB board.

2. The PCB drilling method according to claim 1, characterized in that: Before the step of inserting the second positioning member into the first positioning hole, the method further includes: forming a third positioning hole on the PCB board; The step of inserting the second positioning member into the first positioning hole specifically includes: Insert the second positioning member into the first positioning hole and into the third positioning hole.

3. The PCB drilling method according to claim 1, characterized in that: The steps of transferring the assembly to the non-metal plate, inserting the first positioning member into the second positioning hole, and inserting the second positioning member into the first positioning hole specifically include: The conveying mechanism rises, driving the assembly to move in a plane perpendicular to the first direction, so that the first positioning member is aligned with the second positioning hole, and the second positioning member is aligned with the first positioning hole; The conveying mechanism descends, so that the first positioning member is inserted into the second positioning hole, and the second positioning member is inserted into the first positioning hole.

4. The PCB drilling method according to claim 1, characterized in that: Before the step of clamping the cover plate and the backing plate on opposite sides of the PCB along the first direction, the method further includes: forming a first connection hole on the backing plate; forming a second connection hole on the PCB board; The first positioning member is passed through the first connecting hole and the second connecting hole to fix the pad and the PCB board.

5. The PCB drilling method according to claim 3, characterized in that: After the step of drilling a hole in the assembly along the first direction, the step further includes: separating the assembly from the non-metallic plate; The conveying mechanism drives the assembly to leave the workbench.

6. A PCB drilling machine, which performs the PCB drilling method according to any one of claims 1 to 5 to process a PCB board, characterized in that: It comprises a workbench, a pad, a cover plate and a non-metal plate, wherein the non-metal plate is mounted on the workbench, the cover plate and the pad are clamped on opposite sides of the PCB along a first direction so that the cover plate, the PCB and the pad are stacked to form a combination, and the non-metal plate is arranged on a side of the pad away from the cover plate; The PCB drilling machine further includes a first positioning member and a second positioning member, wherein the first positioning member is at least provided through the backing plate and the PCB board to combine the backing plate with the PCB board, and the second positioning member is provided through the non-metallic plate; The backing plate is provided with a first positioning hole, the non-metal plate is provided with a second positioning hole, the first positioning member is inserted into the second positioning hole, and the second positioning member is inserted into the first positioning hole, so as to position the combination on the non-metal plate.

7. The PCB drilling machine according to claim 6, characterized in that: There are a plurality of first positioning members, the pad has a first side and a second side opposite to each other in the second direction, at least one first positioning member is disposed on the first side, and at least one first positioning member is disposed on the second side; The non-metal plate is provided with a plurality of the second positioning holes, and the plurality of the second positioning holes are provided correspondingly to the plurality of the first positioning members; The second direction intersects the first direction.

8. The PCB drilling machine according to claim 6, characterized in that: There are a plurality of the second positioning members, there are a plurality of the first positioning holes, and the plurality of the second positioning members are arranged correspondingly to the plurality of the first positioning holes.

9. The PCB drilling machine according to claim 8, characterized in that: The non-metal plate has a plurality of corners, and each of the corners is provided with at least one second positioning member.

10. The PCB drilling machine according to claim 8 or 9, characterized in that: The non-metal plate has two opposite side edges, one of the side edges is provided with at least one second positioning member, and the other side edge is provided with at least two second positioning members.

11. The PCB drilling machine according to claim 6, characterized in that: The first positioning hole is a round hole, the second positioning piece is cylindrical, the diameter of the first positioning hole is larger than the diameter of the second positioning piece, and the difference between the diameter of the first positioning hole and the diameter of the second positioning piece is 0-0.025 mm.

12. The PCB drilling machine according to claim 6, characterized in that: The second positioning hole is a round hole, the first positioning piece is cylindrical, the diameter of the second positioning hole is larger than the diameter of the first positioning piece, and the difference between the diameter of the second positioning hole and the diameter of the first positioning piece is 0-0.025 mm.

13. The PCB drilling machine according to claim 6, characterized in that: The PCB drilling machine also includes a conveying mechanism installed on the workbench, and the conveying mechanism includes a first roller assembly and a second roller assembly, the first roller assembly can drive the combination to move along a second direction, and the second roller assembly can drive the combination to move along a third direction; wherein the second direction and the third direction intersect.

14. The PCB drilling machine according to claim 13, characterized in that: The conveying mechanism further comprises a support seat, the first roller assembly comprises a plurality of first rollers, the second roller assembly comprises a plurality of second rollers, and along the second direction, the plurality of first rollers and the plurality of second rollers are alternately arranged on the support seat; A plurality of the second rollers are liftably connected to the support base; Alternatively, a plurality of the second rollers are connected to the support base in a manner that allows them to be lifted and rotatable.

15. The PCB drilling machine according to claim 13, characterized in that: The non-metal plate includes a first sub-plate and a second sub-plate that are spaced apart from each other, and the conveying mechanism is located between the first sub-plate and the second sub-plate.

16. The PCB drilling machine according to claim 6, characterized in that: The PCB drilling machine further includes a plurality of lifting mechanisms, which are arranged at intervals on the workbench, and are used to drive the assembly to separate from the non-metallic plate, so that the first positioning member is disengaged from the second positioning hole and the second positioning member is disengaged from the first positioning hole; The lifting mechanism includes a lifting plate and a lifting pin arranged on the lifting plate, a first through hole is arranged on the workbench, a second through hole corresponding to the first through hole is arranged on the non-metallic plate, and the lifting plate can move along the first direction so that the lifting pin passes through the first through hole and the second through hole in sequence and abuts against the combination.

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