PCB precision hole processing technology based on cross hole processing

Abstract

The invention relates to the technical field of PCB processing, in particular to a PCB precision hole processing technology based on cross hole processing, which comprises a mounting seat, a loading block is movably arranged on the mounting seat, an electric telescopic machine is fixedly mounted at the upper end of the mounting seat, and first limiting frames are fixedly mounted on the left and right sides of the electric telescopic machine; and a drilling machine is fixedly mounted on an output shaft of the electric telescopic machine and slides in the first limiting frame, an air outlet pipe is fixedly mounted on one side of the drilling machine, an air outlet block is fixedly mounted on the right side of the mounting base, and a collecting frame is arranged on the mounting base. The air outlet block and the air outlet pipe can be used for cleaning a drill bit of the PCB drilling machine on the loading block through movement of the drilling machine, so that impurities can enter a collecting frame in the drilling process, the stability of the equipment in use is improved, in addition, a positioning mechanism is further arranged, and the drilling efficiency is improved. And the sinking point and the cross hole point of the drill bit are positioned in a laser positioning mode.

Description

Technical Field

[0001] The invention relates to the technical field of PCB board processing, and in particular to a PCB board precision hole processing technology based on cross hole processing. Background Art

[0002] PCB, Chinese name is printed circuit board, also known as printed circuit board, printed circuit board, is an important electronic component, the support of electronic components, and the provider of electrical connections for electronic components. Because it is made by electronic printing, it is called a "printed" circuit board. In the processing of PCB boards, cross holes are one of the processes. In the process of personal or experimental PCB board production, a small drilling machine will be used to drill holes in the PCB board. The small drilling machine does not have high requirements for precision, but the following problems are prone to occur during the cross drilling process. First, there may be residual materials on the drill bit or PCB board during drilling. If it is removed manually, it may cause displacement of the PCB. Second, since cross drilling requires turning over and not drilling through, it is difficult to position the turned PCB board during drilling. For this reason, we propose a PCB board precision hole processing process based on cross hole processing to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a PCB board precision hole processing technology based on cross hole processing to solve the problems of difficult cleaning during the drilling process and difficult positioning after turning over proposed in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a PCB board precision hole processing technology based on cross hole processing, comprising a mounting seat, on which a loading block is movably arranged,

[0005] An electric telescopic machine is fixedly installed on the upper end of the mounting seat, a first limit frame is fixedly installed on the left and right sides of the electric telescopic machine, a drilling machine is fixedly installed on the output shaft of the electric telescopic machine, the drilling machine slides in the first limit frame, an air outlet pipe is fixedly installed on one side of the drilling machine, an air outlet block is fixedly installed on the right side of the mounting seat, a collecting frame is provided on the mounting seat, a cleaning mechanism is provided at the drilling machine, a displacement mechanism is provided on the mounting seat, a limiting mechanism is provided on the loading block, and a positioning mechanism is provided on the first limit frame.

[0006] Preferably, the cleaning mechanism includes a first fixed plate, the first fixed plate is fixedly installed on one side of the drilling machine, the second fixed plate is fixedly installed on one side of the first limit frame, the lower side of the second fixed plate is fixedly installed with a telescopic tube, the telescopic tube is fixedly installed on the first fixed plate, the lower side of the first fixed plate is fixedly installed with an air outlet pipe, and the air outlet pipe is opposite to the drill bit of the drilling machine.

[0007] Preferably, a gas rod is fixedly mounted on the first fixed plate, an air cylinder is fixedly mounted on one side of the first limit frame, the upper end of the air cylinder is connected with a ventilation pipe, the lower end of the ventilation pipe is connected with an air outlet block, an air outlet is provided on the air outlet block, the air outlet is opposite to the loading block, a limiting groove is provided on the left side of the mounting seat, a limiting block is fixedly mounted on the collecting frame, and the limiting block is inserted in the limiting groove.

[0008] Preferably, the displacement mechanism includes a first slide groove, two groups of first slide grooves are opened on the upper side of the mounting seat, a moving bar is provided on the upper side of the mounting seat, two groups of first sliders are fixedly installed on the lower side of the moving bar, rollers are rotatably installed on the first slider, the first slider slides in the first slide groove, a second slide groove is opened in the moving bar, a guide rod is fixedly installed in the second slide groove, a second slider is slidably installed in the second slide groove, the second slider has a guide groove, the guide rod is inserted in the guide groove, and the second slider is fixedly installed on the lower side of the loading block.

[0009] Preferably, the limiting mechanism comprises a socket, the upper side array of the loading block is provided with a socket, the upper side of the loading block is provided with a second limiting frame, the lower side of the second limiting frame is fixedly mounted with a rubber block, and the rubber block is inserted into the socket.

[0010] Preferably, two groups of loading cylinders are fixedly installed on the front side of the loading block, a movable rod is movably installed in the loading cylinder, a spring is provided in the loading cylinder, the spring is against the first sliding block, a pressure block is fixedly installed on the lower side of the movable rod, a rubber sheet is fixedly installed on the lower side of the pressure block, and the rubber sheet is against the loading block.

[0011] Preferably, the positioning mechanism includes a mounting block, a mounting block is fixedly mounted on the front side of the lower end of the first limit frame, a first laser lamp is fixedly mounted on the mounting block, a mounting frame is provided on one side of the mounting block, a second laser lamp is slidably mounted in the mounting frame, a fixing block is fixedly mounted at the second laser lamp, a screw sleeve is fixedly mounted on the screw sleeve through a thread, and a fixed block is rotatably mounted on the screw.

[0012] Preferably, a loading ring is fixedly mounted on the mounting block, a swivel is rotatably mounted on the loading ring, a mounting frame is fixedly mounted on the swivel, and two groups of magnets are fixedly mounted on the front side of the first limiting frame, and the magnets adsorb the mounting frame.

[0013] Preferably, when the device is in use, the second limit frame is assembled by inserting the rubber block into the socket, so that the shape formed by the second limit frame can adapt to the shape of the PCB board, and then the pressure block is pulled up so that the loading block can move normally, and then the pressure block is released to achieve the positioning of the loading block, and the loading block is moved to the lower side of the drilling machine. At this time, the first laser light and the second laser light are irradiated on the PCB board, and the screw rod can be rotated to increase the distance between the second laser light and the first laser light. At this time, the second laser light irradiates the position of the cross hole on the back, and then the PCB board is turned over, and then the mounting frame is rotated, so that the second laser light irradiates the position that needs to be moved to the place where the first laser light irradiates, thereby completing the visual cross hole processing, and at this time, the air in the telescopic tube is blown out from the air outlet pipe to clean the drill bit of the drilling machine, and the air is blown out from the air outlet through the ventilation pipe, so that the impurities on the PCB board are blown to the collection frame for collection, and the collection frame can be pulled out for cleaning.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention can utilize the activity of the drilling machine to clean the drill bit of the PCB board drilling machine on the loading block through the air outlet block and the air outlet pipe, so that impurities can enter the collection frame during the drilling process, thereby increasing the stability of the equipment when in use; in addition, a positioning mechanism is provided, so that the drill bit sinking point and the cross hole point are positioned by laser positioning, thereby increasing the convenience of the equipment when in use; in addition, the equipment is also provided with a displacement mechanism for convenient displacement, thereby making the displacement of the PCB board more convenient and more stable during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic front view of the structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the structural separation of the present invention;

[0018] Figure 3 This is a schematic diagram of the structural separation of the loading block of the present invention;

[0019] Figure 4 It is a schematic diagram of the structural separation of the first laser lamp of the present invention;

[0020] Figure 5 It is a structural schematic diagram of the second limiting frame of the present invention;

[0021] Figure 6 For the present invention Figure 3 A is a partial enlarged schematic diagram;

[0022] Figure 7 For the present invention Figure 3 A partial enlarged schematic diagram of B in the middle;

[0023] Figure 8 For the present invention Figure 4 A partial enlarged schematic diagram of C in the middle.

[0024] In the figure: 1, mounting base; 2, loading block; 3, electric telescopic machine; 4, first limit frame; 5, drilling machine; 6, air outlet pipe; 7, air outlet block; 8, collecting frame; 9, first fixed plate; 10, second fixed plate; 11, telescopic pipe; 12, gas rod; 13, gas cylinder; 14, ventilation pipe; 15, air outlet; 16, limit slot; 17, limit block; 18, first slide slot; 19, moving bar; 20, first slider; 21, roller; 22, The second slide groove; 23. The guide rod; 24. The second slider; 25. The guide groove; 26. The socket; 27. The second limit frame; 28. The rubber block; 29. ​​The loading cylinder; 30. The movable rod; 31. The spring; 32. The pressure block; 33. The rubber sheet; 34. The mounting block; 35. The first laser light; 36. The loading ring; 37. The rotating ring; 38. The mounting frame; 39. The second laser light; 40. The fixing block; 41. The screw sleeve; 42. The screw; 43. The magnet. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-8 The present invention provides an embodiment: a PCB board precision hole processing technology based on cross hole processing, comprising a mounting seat 1, on which a loading block 2 is movably arranged,

[0027] An electric telescopic machine 3 is fixedly installed on the upper end of the mounting seat 1, and a first limit frame 4 is fixedly installed on the left and right sides of the electric telescopic machine 3. A drilling machine 5 is fixedly installed on the output shaft of the electric telescopic machine 3, and the drilling machine 5 slides in the first limit frame 4. An air outlet pipe 6 is fixedly installed on one side of the drilling machine 5, and an air outlet block 7 is fixedly installed on the right side of the mounting seat 1. A collecting frame 8 is provided on the mounting seat 1, and a cleaning mechanism is provided at the drilling machine 5. A displacement mechanism is provided on the mounting seat 1, a limiting mechanism is provided on the loading block 2, and a positioning mechanism is provided on the first limit frame 4. The device realizes the cleaning function of the device by utilizing the activity of the drilling machine 5 to clean the air outlet block 7 and the air outlet pipe 6 of the drill bit of the PCB board drilling machine 5 on the loading block 2. In addition, a positioning mechanism is also provided, so that the drill bit sinking point and the cross hole point are positioned by laser positioning, which increases the convenience of using the device;

[0028] Furthermore, the cleaning mechanism includes a first fixed plate 9, the first fixed plate 9 is fixedly installed on one side of the drilling machine 5, the second fixed plate 10 is fixedly installed on one side of the first limit frame 4, the telescopic tube 11 is fixedly installed on the lower side of the second fixed plate 10, the telescopic tube 11 is fixedly installed on the first fixed plate 9, and the air outlet pipe 6 is fixedly installed on the lower side of the first fixed plate 9, and the air outlet pipe 6 is opposite to the drill bit of the drilling machine 5. This structure utilizes the up and down movement of the drilling machine 5 and then compressed air to clean the drill bit of the drilling machine 5, which saves power while also achieving high-frequency cleaning, thereby increasing the stability of the equipment during use.

[0029] Furthermore, a gas rod 12 is fixedly mounted on the first fixed plate 9, a gas cylinder 13 is fixedly mounted on one side of the first limit frame 4, a ventilation pipe 14 is connected to the upper end of the gas cylinder 13, and the lower end of the ventilation pipe 14 is connected to the air outlet block 7, an air outlet 15 is provided on the air outlet block 7, and the air outlet 15 is opposite to the loading block 2, a limiting groove 16 is provided on the left side of the mounting seat 1, a limiting block 17 is fixedly mounted on the collecting frame 8, and the limiting block 17 is inserted in the limiting groove 16. This structure also utilizes the activity of the drilling machine 5 to clean the PCB board, further increasing the efficiency of equipment cleaning.

[0030] Furthermore, the displacement mechanism includes a first slide groove 18, two groups of first slide grooves 18 are opened on the upper side of the mounting seat 1, a moving bar 19 is arranged on the upper side of the mounting seat 1, two groups of first sliders 20 are fixedly installed on the lower side of the moving bar 19, rollers 21 are rotatably installed on the first slider 20, the first slider 20 slides in the first slide groove 18, a second slide groove 22 is opened in the moving bar 19, a guide rod 23 is fixedly installed in the second slide groove 22, a second slider 24 is slidably installed in the second slide groove 22, the second slider 24 is opened with a guide groove 25, the guide rod 23 is inserted in the guide groove 25, and the second slider 24 is fixedly installed on the lower side of the loading block 2. This structure makes the movement of the loading block 2 faster and more convenient, and the resistance is smaller during manual displacement, which further increases the convenience of using the equipment.

[0031] Furthermore, the limiting mechanism includes a socket 26, and the upper array of the loading block 2 is provided with the socket 26. The upper side of the loading block 2 is provided with a second limiting frame 27. The lower side of the second limiting frame 27 is fixedly installed with a rubber block 28, and the rubber block 28 is inserted into the socket 26. The structure is assembled through the friction between the rubber block 28 and the socket 26. This assembly method is more convenient, and the second limiting frame 27 is unlikely to be offset when the PCB board is subjected to force.

[0032] Furthermore, two groups of loading cylinders 29 are fixedly installed on the front side of the loading block 2, and a movable rod 30 is movably installed in the loading cylinder 29. A spring 31 is provided in the loading cylinder 29, and the spring 31 is against the first slider 20. A pressure block 32 is fixedly installed on the lower side of the movable rod 30, and a rubber sheet 33 is fixedly installed on the lower side of the pressure block 32, and the rubber sheet 33 is against the loading block 2. This structure enables the pressure block 32 to limit the loading block 2 by extrusion. This method is very stable under vertical force and is more convenient to move.

[0033] Furthermore, the positioning mechanism includes a mounting block 34, a mounting block 34 is fixedly mounted on the front side of the lower end of the first limit frame 4, a first laser lamp 35 is fixedly mounted on the mounting block 34, a mounting frame 38 is provided on one side of the mounting block 34, a second laser lamp 39 is slidably mounted in the mounting frame 38, a fixing block 40 is fixedly mounted at the second laser lamp 39, a screw sleeve 41 is fixedly mounted on the mounting frame 38, a screw rod 42 is threadedly mounted on the screw sleeve 41, and a fixing block 40 is rotatably mounted on the screw rod 42. The second laser lamp 39 of this structure illuminates the position of the cross hole on the back side, and the first laser lamp 35 illuminates the position of the lower cutter of the drilling machine 5, so that the distance between the first laser lamp 35 and the second laser lamp 39 can be adjusted according to actual needs to achieve better and more adaptive positioning.

[0034] Furthermore, a loading ring 36 is fixedly installed at the mounting block 34, a swivel 37 is rotatably installed on the loading ring 36, a mounting frame 38 is fixedly installed on the swivel 37, and two groups of magnets 43 are fixedly installed on the front side of the first limit frame 4, and the magnets 43 adsorb the mounting frame 38. This structure allows the position of the second laser lamp 39 to be reversed, so that the second laser lamp 39 irradiates the position that needs to be moved to the place where the first laser lamp 35 is irradiated, thereby completing the visual cross hole processing and increasing the accuracy of the visual processing.

[0035] Furthermore, when the device is in use, the second limit frame 27 is assembled by inserting the rubber block 28 into the socket 26, so that the shape formed by the second limit frame 27 can adapt to the shape of the PCB board, and then the pressure block 32 is pulled up so that the loading block 2 can move normally, and then the pressure block 32 is released to realize the positioning of the loading block 2, and the loading block 2 is moved to the lower side of the drilling machine 5. At this time, the first laser light 35 and the second laser light 39 are irradiated on the PCB board, and the screw 42 can be rotated so that the second laser light 39 and the first laser light 35 are aligned. The spacing increases, and the second laser lamp 39 now illuminates the position of the cross hole on the back, then the PCB board is turned over, and then the mounting frame 38 is rotated, so that the second laser lamp 39 illuminates the position that needs to be moved to the position where the first laser lamp 35 is now irradiated, thereby completing the visual cross hole processing, and the air in the telescopic tube 11 is blown out from the air outlet pipe 6 to clean the drill bit of the drilling machine 5, and the air is blown out from the air outlet 15 through the ventilation pipe 14, so that the impurities on the PCB board are blown to the collection frame 8 for collection, and the collection frame 8 can be pulled out for cleaning.

[0036] Working principle: When the equipment is in use, the second limit frame 27 is assembled by inserting the rubber block 28 into the socket 26, so that the shape formed by the second limit frame 27 can adapt to the shape of the PCB board, thereby realizing the loading of the PCB board, and then the pressure block 32 is pulled up, so that the movable rod 30 squeezes the spring 31, so that the loading block 2 can move normally. When moving horizontally, the second slider 24 slides in the moving bar 19, and when moving vertically, the first slider 20 slides in the first slide groove 18 to realize the free movement of the loading block 2, and then the pressure block 32 is released, so that the rubber sheet 33 squeezes the loading block 2 under the action of the elastic force of the spring 31, so as to realize the positioning of the loading block 2, and move the loading block 2 to the lower side of the drilling machine 5. At this time, the first laser light 35 and the second laser light 39 are irradiated on the PCB board, and the first laser light 35 is irradiated at the position where the drilling machine 5 cuts, while the second laser light 39 and the first laser light 35 are on the same horizontal line and can rotate The screw rod 42 moves to the right through the threaded action with the screw sleeve 41, thereby increasing the distance between the second laser lamp 39 and the first laser lamp 35. At this time, the second laser lamp 39 irradiates the position of the cross hole on the back, and then the PCB board is turned over, and then the mounting frame 38 is rotated so that the mounting frame 38 is rotated to the other side to be adsorbed by the magnet 43, so that the second laser lamp 39 irradiates the position that needs to be moved to the position where the first laser lamp 35 irradiates, thereby completing the visual cross hole processing, and then after the processing, the electric telescopic machine 3 drives the drilling machine 5 to rise, thereby compressing the telescopic tube 11, and at this time, the air in the telescopic tube 11 is blown out from the air outlet pipe 6 to clean the drill bit of the drilling machine 5, and the air rod 12 compresses the air in the air cylinder 13 and blows it out from the air outlet 15 through the ventilation pipe 14, so that the impurities on the PCB board are blown to the collection frame 8 for collection, and the collection frame 8 can be drawn out for cleaning. The above is the entire working principle of the present invention.

[0037] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A PCB board precision hole processing device based on cross hole processing, comprising a mounting seat (1), a loading block (2) movably arranged on the mounting seat (1), Features: An electric telescopic machine (3) is fixedly mounted on the upper end of the mounting seat (1), first limit frames (4) are fixedly mounted on the left and right sides of the electric telescopic machine (3), a drilling machine (5) is fixedly mounted on the output shaft of the electric telescopic machine (3), the drilling machine (5) slides in the first limit frame (4), an air outlet pipe (6) is fixedly mounted on one side of the drilling machine (5), an air outlet block (7) is fixedly mounted on the right side of the mounting seat (1), a collecting frame (8) is provided on the mounting seat (1), a cleaning mechanism is provided at the drilling machine (5), a displacement mechanism is provided on the mounting seat (1), a limit mechanism is provided on the loading block (2), and a positioning mechanism is provided on the first limit frame (4).

2. According to claim 1, a PCB board precision hole processing equipment based on cross hole processing is characterized in that: The cleaning mechanism comprises a first fixed plate (9), the first fixed plate (9) is fixedly mounted on one side of the drilling machine (5), a second fixed plate (10) is fixedly mounted on one side of the first limiting frame (4), a telescopic tube (11) is fixedly mounted on the lower side of the second fixed plate (10), the telescopic tube (11) is fixedly mounted on the first fixed plate (9), an air outlet pipe (6) is fixedly mounted on the lower side of the first fixed plate (9), and the air outlet pipe (6) is opposite to the drill bit of the drilling machine (5).

3. The PCB board precision hole processing equipment based on cross hole processing according to claim 2 is characterized in that: An air rod (12) is fixedly mounted on the first fixing plate (9), an air cylinder (13) is fixedly mounted on one side of the first limiting frame (4), the upper end of the air cylinder (13) is connected to a ventilation pipe (14), the lower end of the ventilation pipe (14) is connected to an air outlet block (7), an air outlet (15) is provided on the air outlet block (7), the air outlet (15) is opposite to the loading block (2), a limiting groove (16) is provided on the left side of the mounting seat (1), a limiting block (17) is fixedly mounted on the collecting frame (8), and the limiting block (17) is inserted into the limiting groove (16).

4. The PCB board precision hole processing equipment based on cross hole processing according to claim 1 is characterized in that: The displacement mechanism comprises a first slide groove (18), two groups of first slide grooves (18) are provided on the upper side of the mounting seat (1), a moving bar (19) is provided on the upper side of the mounting seat (1), two groups of first sliders (20) are fixedly installed on the lower side of the moving bar (19), rollers (21) are rotatably installed in an array on the first slider (20), the first slider (20) slides in the first slide groove (18), a second slide groove (22) is provided in the moving bar (19), a guide rod (23) is fixedly installed in the second slide groove (22), a second slider (24) is slidably installed in the second slide groove (22), a guide groove (25) is provided in the second slider (24), the guide rod (23) is inserted in the guide groove (25), and the second slider (24) is fixedly installed on the lower side of the loading block (2).

5. The PCB board precision hole processing equipment based on cross hole processing according to claim 1 is characterized in that: The limiting mechanism comprises a socket (26), the sockets (26) are arranged in an array on the upper side of the loading block (2), a second limiting frame (27) is arranged on the upper side of the loading block (2), a rubber block (28) is fixedly mounted on the lower side of the second limiting frame (27), and the rubber block (28) is inserted into the socket (26).

6. The PCB board precision hole processing equipment based on cross hole processing according to claim 1 is characterized in that: Two groups of loading cylinders (29) are fixedly mounted on the front side of the loading block (2), a movable rod (30) is movably mounted in the loading cylinder (29), a spring (31) is arranged in the loading cylinder (29), the spring (31) abuts against the first sliding block (20), a pressure block (32) is fixedly mounted on the lower side of the movable rod (30), a rubber sheet (33) is fixedly mounted on the lower side of the pressure block (32), and the rubber sheet (33) abuts against the loading block (2).

7. The PCB board precision hole processing equipment based on cross hole processing according to claim 1 is characterized in that: The positioning mechanism comprises a mounting block (34), the mounting block (34) being fixedly mounted on the front side of the lower end of the first limiting frame (4), the first laser lamp (35) being fixedly mounted on the mounting block (34), a mounting square frame (38) being provided on one side of the mounting block (34), a second laser lamp (39) being slidably mounted in the mounting square frame (38), a fixing block (40) being fixedly mounted at the second laser lamp (39), a screw sleeve (41) being fixedly mounted on the screw sleeve (41), a screw rod (42) being threadedly mounted on the screw rod (42), and a fixing block (40) being rotatably mounted on the screw rod (42).

8. The PCB board precision hole processing equipment based on cross hole processing according to claim 7 is characterized in that: A loading ring (36) is fixedly mounted on the mounting block (34), a rotating ring (37) is rotatably mounted on the loading ring (36), a mounting frame (38) is fixedly mounted on the rotating ring (37), and two groups of magnets (43) are fixedly mounted on the front side of the first limiting frame (4), and the magnets (43) adsorb the mounting frame (38).

9. A processing technology of a PCB board precision hole processing equipment based on cross hole processing according to claims 1-8, characterized in that: When the device is in use, the second limit frame (27) is assembled by inserting the rubber block (28) into the insertion hole (26), so that the shape formed by the second limit frame (27) can adapt to the shape of the PCB board, and then the pressure block (32) is pulled up so that the loading block (2) can move normally, and then the pressure block (32) is released to achieve the positioning of the loading block (2), and the loading block (2) is moved to the lower side of the drilling machine (5). At this time, the first laser light (35) and the second laser light (39) are irradiated on the PCB board, and the screw rod (42) can be rotated so that the second laser light (39) and the first laser light (35) are in contact with each other. The spacing between the two ends of the substrate increases, and the second laser light (39) now illuminates the position of the cross hole on the back side. The PCB board is then turned over, and the mounting frame (38) is rotated, so that the second laser light (39) illuminates the position that needs to be moved from the position where the first laser light (35) is irradiated, thereby completing the visual processing of the cross hole. At this time, the air in the telescopic tube (11) is blown out from the air outlet pipe (6) to clean the drill bit of the drilling machine (5). The air is blown out from the air outlet (15) through the ventilation pipe (14), so that the impurities on the PCB board are blown to the collection frame (8) for collection, and the collection frame (8) can be pulled out for cleaning.

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