PCB micropore drilling device

Abstract

The utility model discloses a PCB micropore drilling device which comprises a working plate, a portal frame and two sets of fixing plates are installed on the upper portion of the working plate, a first lead screw rod penetrates through the inside of the portal frame through a bearing, a first lead screw sleeve is connected to the side wall of the first lead screw rod in a sleeved mode, and a sliding block is connected to the side wall of the first lead screw sleeve in a sleeved mode. And a transverse rod slidably penetrates through one side of the sliding block, the two ends of the transverse rod are fixedly connected with the two sides of the interior of the portal frame correspondingly, a first electric telescopic rod is installed on the lower portion of the sliding block, a mounting frame is installed at one end of the first electric telescopic rod, and a mounting cover is installed on the lower portion of the mounting frame. The PCB micropore drilling device has the advantages that the dust collection box is adopted, through the dust collection box, collection work of chippings and raised dust in the punching process can be completed without installing electric dust removal equipment, and the input cost of the PCB micropore drilling device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB circuit board drilling, in particular to a PCB micro-hole drilling device. Background Art

[0002] PCB circuit board, or printed circuit board, is the provider of electrical connections for electronic components. It uses an insulating board as the substrate, is cut into a certain size, has at least one conductive pattern attached to it, and is provided with holes (such as component holes, fastening holes, metallized holes, etc.). It is used to replace the chassis for installing electronic components in the past and to achieve mutual connection between electronic components. When actually processing PCB circuit boards, a drilling machine is required to complete the opening work on the surface of the PCB circuit board. In actual use, it has the advantages of simple operation, stable structure and good use effect.

[0003] The prior art discloses a drilling device for PCB circuit board processing with a publication number of CN220074912U, which includes a support plate, a fixing frame, a drilling machine, a slide rail, a slider, a workbench, a hydraulic rod, a fixing plate, a fixing block, a mounting block, a threaded rod, a rotating disk, and a screw sleeve. When in use, the hydraulic rod is first started to adjust the position of the fixing plate, and the PCB circuit board is inserted into the fixing plate. The hydraulic rod is started again to make the fixing plates close to each other, and the PCB circuit board is clamped and fixed. Then, the hydraulic rod is closed, which can reduce the sliding of the PCB circuit board during the drilling process. , improve the drilling accuracy, rotate the rotating disk to make the threaded rod rotate clockwise, the threaded rod and the screw sleeve move relative to each other, and the screw sleeve drives the workbench to move to the side close to the drilling machine, so that the PCB circuit board is located directly under the drilling machine, and then start the power component on the drilling machine to drive the drilling machine to move, and drill holes in the PCB circuit board. The PCB circuit board is supported by the workbench, so that the PCB circuit board will not slide downward during the process of the drilling machine squeezing and drilling the PCB circuit board downward, thereby improving the drilling efficiency of the drilling machine on the PCB circuit board.

[0004] In the above utility model, when the drilling machine is powered on, the drill bit will drill holes on the surface of the PCB circuit board. During this process, debris and dust will be generated. Without a collection structure, the operator will inhale the dust into the lungs, causing harm to his own health. Installing electric dust removal equipment will increase the investment cost of this utility model.

[0005] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] In view of the deficiencies in the prior art, the utility model provides a PCB micro-hole drilling device, which has the advantage of being able to collect debris and dust during the drilling process without installing electric dust removal equipment, thereby solving the problems in the above-mentioned background technology.

[0008] (II) Technical solution

[0009] In order to achieve the above-mentioned advantage of collecting debris and dust during the drilling process without installing electric dust removal equipment, the specific technical solution adopted by the utility model is as follows:

[0010] A PCB micro-hole drilling device comprises a working plate, a gantry and two groups of fixed plates are installed on the upper part of the working plate, a first wire lever is penetrated inside the gantry through a bearing, and a first wire screw sleeve is sleeved on the side wall of the first wire lever, and a slider is sleeved on the side wall of the first wire screw sleeve, a cross bar is slidably penetrated on one side of the slider, and two ends of the cross bar are respectively fixedly connected to the two sides of the interior of the gantry, a first electric telescopic rod is installed at the lower part of the slider, and a mounting frame is installed at one end of the first electric telescopic rod, and a mounting cover is installed at the lower part of the mounting frame, a driving motor is installed on the inner bottom surface of the mounting frame, and the output end of the driving motor penetrates the mounting cover through a bearing, a connecting piece is installed at the output end of the driving motor, and a micro drill is installed at the lower end of the connecting piece, and a dust collecting box is installed on the side of the micro drill, a second wire lever is penetrated between the two groups of fixed plates through a bearing, and a second wire screw sleeve is sleeved on the side wall of the second wire lever, and a guide rod is fixedly installed between the two groups of fixed plates Rod, an installation box is arranged between the two groups of fixed plates, and two groups of installation plates are installed at the lower part of the installation box, one end of the second lead screw sleeve is fixedly penetrated through the end surface of the left group of mounting plates, one end of the guide rod slides through the end surface of the right group of mounting plates, and the lower part of the installation box slides through a lifting plate, and second electric telescopic rods are installed on both sides of the interior of the installation box, and clamping plates are installed at the opposite ends of the two groups of second electric telescopic rods, a forward and reverse motor is installed on the other side of the gantry, and the output end of the forward and reverse motor is fixedly connected with one end of the first lead lever, a mounting shaft is penetrated through the lower part of the mounting cover through a bearing, and a driven gear and a fan blade are sleeved on the side wall of the mounting shaft, and a main gear is sleeved on the side wall of the output end of the driving motor, a filter pipe is installed at the lower part of the mounting cover, and an air guide hopper is installed at the lower end of the filter pipe, and a connecting hose is installed at one end of the air guide hopper, one end of the connecting hose passes through the upper part of the dust collecting box, and filter bags are penetrated on both sides of the dust collecting box.

[0011] Furthermore, the main gear and the driven gear are meshed with each other.

[0012] Furthermore, a battery box and two groups of hollow columns are installed on the upper part of the working plate, a buzzer alarm is installed on the upper part of the battery box, and a push switch is installed on the upper part of the buzzer alarm, telescopic springs are installed on the inner bottom surfaces of the two groups of hollow columns, T-shaped rods are installed on the upper ends of the two groups of telescopic springs, one end of the two groups of T-shaped rods respectively slide through the inner top surfaces of the two groups of hollow columns, and one end of the two groups of T-shaped rods is fixedly connected to the lower part of the lifting plate.

[0013] Furthermore, a storage battery is installed inside the battery box, and the push switch is electrically connected to the storage battery and the buzzer alarm through wires.

[0014] Furthermore, a control panel is installed on one side of the gantry, and the control panel is electrically connected to the forward and reverse motors, the first electric telescopic rods, the drive motor and the two groups of the second electric telescopic rods through electric wires.

[0015] Furthermore, the first lead screw lever and the first lead screw sleeve threadably cooperate with each other.

[0016] Furthermore, the second lead screw lever and the second lead screw sleeve thread cooperate with each other.

[0017] Furthermore, a support seat is installed at the lower part of the working plate.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the utility model provides a PCB micro-hole drilling device, which has the following beneficial effects:

[0020] (1) The utility model adopts a dust collecting box. When the PCB micro-hole drilling device is actually used, the operator first puts the PCB circuit board into the installation box, and then uses the control panel to operate the forward and reverse motors, the first electric telescopic rod, the drive motor and the two sets of second electric telescopic rods. The two sets of second electric telescopic rods are extended and can clamp the PCB circuit board through the two sets of clamps. The first electric telescopic rod is extended to move the installation frame downward. The output end of the drive motor drives the micro drill to rotate through the connecting piece. The rotating micro drill can punch holes in the PCB circuit board. The forward and reverse motor works, and its output end can drive the first screw lever to rotate. Since the first screw lever and the first screw sleeve thread cooperate with each other, the rotating first screw lever can push the first screw sleeve to move. The first screw sleeve can drive the installation frame to move through the slider and the first electric telescopic rod. The operator rotates the second screw lever by hand. Since the second screw lever and the second screw sleeve thread cooperate with each other, the rotating first screw lever can push the first screw sleeve to move. The first screw sleeve can drive the installation frame to move through the slider and the first electric telescopic rod. The threads of the lever sleeve cooperate with each other, and the rotating second wire lever can push the second screw sleeve to move. The second screw sleeve can drive the installation box to move forward and backward through a group of mounting plates on the left, and the use position of the installation box and the PCB circuit board can be adjusted. The output end of the drive motor can drive the main gear to rotate. Since the main gear and the driven gear are meshed with each other, the rotating main gear can drive the driven gear to rotate, and the driven gear can drive the fan blades to rotate through the mounting shaft. External air, debris and dust can enter the interior of the two groups of filter bags, and the external air can enter the interior of the air guide hopper through the connecting hose. The external air inside the air guide hopper can be discharged through the filter screen pipe. The cross bar can maintain the stability of the lateral movement of the slider, and a group of mounting plates and guide rods on the right can ensure the stability of the forward and backward movement of the installation box. Through the dust collection box, there is no need to install electric dust removal equipment to complete the collection of debris and dust during the punching process, thereby reducing the investment cost of the PCB micro-hole drilling device.

[0021] (2) The utility model adopts a lifting plate. According to the above operation, when the driving motor is powered on, its output end can drive the micro drill to rotate through the connecting piece, and the first electric telescopic rod extends, so that the rotating micro drill can move down to drill holes in the PCB circuit board. When the rotating micro drill penetrates the PCB circuit board, it can contact the lifting plate. The lifting plate has no clamping structure and will move down under force. The lifting plate squeezes two sets of telescopic springs through two sets of T-shaped rods. When the lifting plate presses the push switch, the buzzer alarm starts to work. The operator can know that the PCB circuit board has completed a drilling work by the sound of the buzzer alarm. When the micro drill moves up and resets, the two sets of telescopic springs are acted upon by their own elastic force, and the lifting plate can move up and reset through the two sets of T-shaped rods, waiting for the next use. The set lifting plate can remind the operator whether the PCB circuit board has completed the drilling work, thereby improving the practicality of the PCB micro-hole drilling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of a PCB micro-hole drilling device proposed by the utility model;

[0024] Figure 2 This is a front view of a PCB micro-hole drilling device proposed by the utility model;

[0025] Figure 3 It is a three-dimensional diagram of the lifting plate proposed by the utility model;

[0026] Figure 4 The utility model proposes Figure 1 A magnified view of middle;

[0027] Figure 5 The utility model proposes Figure 1 Enlarged view of middle B;

[0028] Figure 6 The utility model proposes Figure 1 Enlarged view of middle C;

[0029] Figure 7 The utility model proposes Figure 1 Enlarged view of middle D;

[0030] Figure 8 The utility model proposes Figure 1 Enlarged view of E.

[0031] In the figure:

[0032] 1. Working plate; 2. Gantry; 3. First thread lever; 4. First thread screw sleeve; 5. Sliding block; 6. Cross bar; 7. Forward and reverse motor; 8. First electric telescopic rod; 9. Mounting frame; 10. Driving motor; 11. Mounting cover; 12. Connector; 13. Micro drill; 14. Dust collecting box; 15. Fixing plate; 16. Second thread lever; 17. Second thread screw sleeve; 18. Mounting box; 19. Second electric telescopic rod; 20. Mounting plate; 21. Guide rod; 22. Clamp; 23. Lifting plate; 24. Main gear; 25. Mounting shaft; 26. Driven gear; 27. Fan blade; 28. Filter screen tube; 29. ​​Wind guide scoop; 30. Filter bag; 31. Battery box; 32. Hollow column; 33. Buzzer alarm; 34. Press switch; 35. Telescopic spring; 36. T-bar. DETAILED DESCRIPTION

[0033] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0034] According to an embodiment of the utility model, a PCB micro-hole drilling device is provided.

[0035] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-8As shown, a PCB micro-hole drilling device according to an embodiment of the utility model comprises a working plate 1, a gantry 2 and two sets of fixed plates 15 are installed on the upper part of the working plate 1, a first wire lever 3 is penetrated inside the gantry 2 through a bearing, and a first screw sleeve 4 is sleeved on the side wall of the first wire lever 3, and a slider 5 is sleeved on the side wall of the first screw sleeve 4, a cross bar 6 is slidably penetrated on one side of the slider 5, and the two ends of the cross bar 6 are respectively fixedly connected to the two sides of the inside of the gantry 2, a first electric telescopic rod 8 is installed on the lower part of the slider 5, and a mounting frame 9 is installed on one end of the first electric telescopic rod 8, and the mounting frame A mounting cover 11 is installed at the lower part of the frame 9, a driving motor 10 is installed on the inner bottom surface of the mounting frame 9, and the output end of the driving motor 10 passes through the mounting cover 11 through a bearing, a connecting piece 12 is installed at the output end of the driving motor 10, and a micro drill 13 is installed at the lower end of the connecting piece 12, and a dust collecting box 14 is installed on the side of the micro drill 13, a second wire lever 16 passes through the bearing between the two sets of fixing plates 15, and a second screw sleeve 17 is sleeved on the side wall of the second wire lever 16, a guide rod 21 is fixedly installed between the two sets of fixing plates 15, and a mounting box 18 is arranged between the two sets of fixing plates 15, and the mounting box 18 is arranged between the two sets of fixing plates 15. Two groups of mounting plates 20 are installed at the lower part of the mounting box 18, one end of the second lead screw sleeve 17 is fixedly penetrated through the end surface of the left group of mounting plates 20, one end of the guide rod 21 slides through the end surface of the right group of mounting plates 20, and a lifting plate 23 slides through the lower part of the mounting box 18. Second electric telescopic rods 19 are installed on both sides of the interior of the mounting box 18, and the opposite ends of the two groups of second electric telescopic rods 19 are installed with clamping plates 22. A forward and reverse motor 7 is installed on the other side of the gantry 2, and the output end of the forward and reverse motor 7 is fixedly connected to one end of the first wire lever 3. The lower part of the mounting cover 11 is penetrated by a bearing. The mounting shaft 25 is provided, and the side wall of the mounting shaft 25 is sleeved with a driven gear 26 and a fan blade 27, the side wall of the output end of the driving motor 10 is sleeved with a main gear 24, a filter tube 28 is provided at the lower part of the mounting cover 11, and an air guide scoop 29 is provided at the lower end of the filter tube 28, and a connecting hose is provided at one end of the air guide scoop 29, and one end of the connecting hose passes through the upper part of the dust collecting box 14, and filter bags 30 are passed through both sides of the dust collecting box 14. By setting up the dust collecting box 14, it is possible to complete the collection of debris and dust during the punching process without installing electric dust removal equipment, thereby reducing the investment cost of the PCB micro-hole drilling device.

[0036] In one embodiment, the main gear 24 and the driven gear 26 mesh with each other, so that the main gear 24 drives the driven gear 26 to rotate.

[0037] In one embodiment, a battery box 31 and two groups of hollow columns 32 are installed on the upper part of the working plate 1, a buzzer alarm 33 is installed on the upper part of the battery box 31, and a push switch 34 is installed on the upper part of the buzzer alarm 33, telescopic springs 35 are installed on the inner bottom surfaces of the two groups of hollow columns 32, and T-shaped rods 36 are installed on the upper ends of the two groups of telescopic springs 35. One ends of the two groups of T-shaped rods 36 slide through the inner top surfaces of the two groups of hollow columns 32 respectively, and one ends of the two groups of T-shaped rods 36 are fixedly connected to the lower part of the lifting plate 23. Through the setting of the lifting plate 23, the operating worker can be prompted whether the drilling work of the PCB circuit board is completed, thereby improving the practicality of the PCB micro-hole drilling device.

[0038] In one embodiment, a battery is installed inside the battery box 31 , and the push switch 34 is electrically connected to the battery and the buzzer alarm 33 through wires, and the battery provides power for the buzzer alarm 33 .

[0039] In one embodiment, a control panel is installed on one side of the gantry 2, and the control panel is electrically connected to the forward and reverse motor 7, the first electric telescopic rod 8, the drive motor 10 and the two sets of second electric telescopic rods 19 through electric wires. The control panel can be implemented by simple programming by technicians in this field, which is common knowledge in this field. It is only used without modification, so the control method and circuit connection are not described in detail.

[0040] In one embodiment, the first screw lever 3 and the first screw sleeve 4 are threadably matched with each other, so as to facilitate adjustment of the use position of the first screw sleeve 4 .

[0041] In one embodiment, the second screw lever 16 and the second screw sleeve 17 are threadably matched with each other to facilitate adjustment of the use position of the second screw sleeve 17 .

[0042] In one embodiment, a support seat is installed at the lower part of the working plate 1 .

[0043] Working principle:

[0044] When the PCB micro-hole drilling device is actually used, the operator first puts the PCB circuit board into the installation box 18, and then uses the control panel to make the forward and reverse motor 7, the first electric telescopic rod 8, the drive motor 10 and the two sets of second electric telescopic rods 19 work. The two sets of second electric telescopic rods 19 are extended, and the PCB circuit board can be clamped by the two sets of clamping plates 22. The first electric telescopic rod 8 is extended to move the installation frame 9 downward. The output end of the drive motor 10 drives the micro drill 13 to rotate through the connecting piece 12, and the rotating micro drill 13 can punch holes in the PCB circuit board. The forward and reverse motor 7 works, and its output end can drive the first wire lever 3 to rotate. Since the first wire lever 3 and the first screw sleeve 4 threads cooperate with each other, the rotating first wire lever 3 can push the first The lead screw sleeve 4 moves, and the first lead screw sleeve 4 can drive the installation frame 9 to move through the slider 5 and the first electric telescopic rod 8. The operator rotates the second wire lever 16 by hand. Since the second wire lever 16 and the second lead screw sleeve 17 threads cooperate with each other, the rotating second wire lever 16 can push the second lead screw sleeve 17 to move. The second lead screw sleeve 17 can drive the installation box 18 to move back and forth through a group of mounting plates 20 on the left side, and the use position of the installation box 18 and the PCB circuit board can be adjusted. The output end of the drive motor 10 can drive the main gear 24 to rotate. Since the main gear 24 and the driven gear 26 are meshed with each other, the rotating main gear 24 can drive the driven gear 26 to rotate, and the driven gear 26 can drive the fan blade 27 to rotate through the mounting shaft 25. External air, debris and dust The interior of the two groups of filter bags 30 can be entered, and the external air can enter the interior of the air guide hopper 29 through the connecting hose. The external air inside the air guide hopper 29 can be discharged through the filter screen pipe 28. The cross bar 6 can maintain the stability of the lateral movement of the slider 5. A group of mounting plates 20 and guide rods 21 on the right side can ensure the stability of the forward and backward movement of the mounting box 18. Through the dust collecting box 14, the collection of debris and dust during the punching process can be completed without installing electric dust removal equipment, thereby reducing the investment cost of the PCB micro-hole drilling device. At the same time, according to the above operation, when the driving motor 10 is powered on, its output end can drive the micro drill 13 to rotate through the connecting piece 12, and the first electric telescopic rod 8 is extended, so that the rotating micro drill 13 can be moved down to punch the PCB circuit board. Hole, when the rotating micro drill 13 penetrates the PCB circuit board, it can contact the lifting plate 23. The lifting plate 23 has no clamping structure and will be forced to move downward. The lifting plate 23 squeezes the two groups of telescopic springs 35 through the two groups of T-shaped rods 36. When the lifting plate 23 presses the push switch 34, the buzzer alarm 33 starts to work. The operator can know that the PCB circuit board has completed a drilling work by the sound of the buzzer alarm 33. When the micro drill 13 moves up and resets, the two groups of telescopic springs 35 are acted upon by their own elastic force, and the lifting plate 23 can be moved up and reset through the two groups of T-shaped rods 36, waiting for the next use. The setting of the lifting plate 23 can remind the operator whether the PCB circuit board has completed the drilling work, thereby improving the practicality of the PCB micro-hole drilling device.

[0045] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. 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 micro-hole drilling device, characterized in that: The invention comprises a working plate (1), the upper part of which is provided with a gantry (2) and two sets of fixed plates (15), the interior of the gantry (2) is penetrated by a first wire lever (3) through a bearing, the side wall of the first wire lever (3) is sleeved with a first wire screw sleeve (4), and the side wall of the first wire screw sleeve (4) is sleeved with a slider (5), one side of the slider (5) is slidably penetrated by a cross bar (6), and the two ends of the cross bar (6) are respectively fixedly connected to the two sides of the interior of the gantry (2), the lower part of the slider (5) is provided with a first electric telescopic rod (8), one end of the first electric telescopic rod (8) is provided with a mounting frame (9), and the lower part of the mounting frame (9) is provided with a first electric telescopic rod (8). The mounting frame (9) is provided with a mounting cover (11), a driving motor (10) is installed on the inner bottom surface of the mounting frame (9), and the output end of the driving motor (10) passes through the mounting cover (11) through a bearing, a connecting piece (12) is installed on the output end of the driving motor (10), and a micro drill (13) is installed at the lower end of the connecting piece (12), and a dust collecting box (14) is installed on the side of the micro drill (13), a second wire lever (16) passes through the bearing between the two sets of the fixing plates (15), and a second wire screw sleeve (17) is sleeved on the side wall of the second wire lever (16), a guide rod (21) is fixedly installed between the two sets of the fixing plates (15), and the two sets of the fixing plates (15) are provided with a guide rod (21) and a guide rod (21) is fixedly installed between the two sets of the fixing plates (15). A mounting box (18) is arranged between the fixed plates (15), and two groups of mounting plates (20) are installed at the bottom of the mounting box (18), one end of the second lead screw sleeve (17) is fixedly passed through the end surface of the left group of mounting plates (20), one end of the guide rod (21) is slidably passed through the end surface of the right group of mounting plates (20), a lifting plate (23) is slidably passed through the bottom of the mounting box (18), second electric telescopic rods (19) are installed on both sides of the inside of the mounting box (18), and the opposite ends of the two groups of the second electric telescopic rods (19) are installed with clamping plates (22), and the other side of the gantry (2) is installed with a forward and reverse motor (7), and the forward and reverse motors (7) are installed on the other side of the gantry (2). The output end of the rotating motor (7) is fixedly connected to one end of the first wire lever (3); a mounting shaft (25) is passed through the lower part of the mounting cover (11) through a bearing, and the side wall of the mounting shaft (25) is sleeved with a driven gear (26) and a fan blade (27); the side wall of the output end of the driving motor (10) is sleeved with a main gear (24); a filter tube (28) is installed at the lower part of the mounting cover (11), and an air guide scoop (29) is installed at the lower end of the filter tube (28), and a connecting hose is installed at one end of the air guide scoop (29), and one end of the connecting hose passes through the upper part of the dust collecting box (14), and filter bags (30) are passed through both sides of the dust collecting box (14).

2. A PCB micro-hole drilling device according to claim 1, characterized in that: The main gear (24) and the driven gear (26) are meshed with each other.

3. A PCB micro-hole drilling device according to claim 1, characterized in that: A battery box (31) and two groups of hollow columns (32) are installed on the upper part of the working plate (1); a buzzer alarm (33) is installed on the upper part of the battery box (31); and a push switch (34) is installed on the upper part of the buzzer alarm (33); telescopic springs (35) are installed on the inner bottom surfaces of the two groups of hollow columns (32); T-shaped rods (36) are installed on the upper ends of the two groups of telescopic springs (35); one end of the two groups of T-shaped rods (36) respectively slides through the inner top surfaces of the two groups of hollow columns (32); and one end of the two groups of T-shaped rods (36) is fixedly connected to the lower part of the lifting plate (23).

4. A PCB micro-hole drilling device according to claim 3, characterized in that: A storage battery is installed inside the battery box (31), and the push switch (34) is electrically connected to the storage battery and the buzzer alarm (33) through wires.

5. A PCB micro-hole drilling device according to claim 1, characterized in that: A control panel is installed on one side of the gantry (2), and the control panel is electrically connected to the forward and reverse motor (7), the first electric telescopic rod (8), the drive motor (10) and the two sets of the second electric telescopic rods (19) through electric wires.

6. A PCB micro-hole drilling device according to claim 1, characterized in that: The first screw lever (3) and the first screw sleeve (4) are threadably matched with each other.

7. A PCB micro-hole drilling device according to claim 1, characterized in that: The second screw lever (16) and the second screw sleeve (17) are threadably matched with each other.

8. A PCB micro-hole drilling device according to claim 1, characterized in that: A support seat is installed at the lower part of the working plate (1).

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