Drilling device for circuit board with high thickness-diameter ratio

Abstract

A high-thickness-diameter-ratio circuit board drilling device comprises a bottom base, a first threaded rod is rotationally installed on the bottom base, a movable frame is slidably installed on the upper end face of the base, the outer surface of the first threaded rod is in threaded connection with the movable frame in a screwed mode, and a first motor is fixedly installed on the right end face of the first threaded rod and fixedly installed on one side of the base. A moving plate is slidably mounted on one side of the moving frame, a moving block is slidably mounted on one side of the moving plate, a second threaded rod is rotatably mounted on the inner wall of the moving plate, the outer surface of the second threaded rod is in threaded connection with the moving block, a second motor is fixedly mounted on the upper end face of the moving plate, and the output end of the second motor and the second threaded rod are fixedly mounted. A drilling motor for drilling the circuit board is installed at the bottom of the moving block, a fixing mechanism for fixing the circuit board is installed on the upper end face of the base, and an air injection mechanism for cleaning chippings generated during drilling of the circuit board is installed on the upper end face of the base.

Description

Technical Field

[0001] The utility model relates to a drilling device, in particular to a drilling device for a circuit board with a high aspect ratio. Background Art

[0002] With the rapid development of electronic information technology, circuit boards are developing towards fine lines, more layers and higher density. The increase in the number of layers in circuit boards leads to an increasing aspect ratio, while the aperture is decreasing, making the processing of through holes in high aspect ratio circuit boards more challenging.

[0003] A Chinese patent (authorization announcement number: CN219788600U, authorization announcement date: 2023.10.03) proposes a drilling device, and in particular, relates to a high aspect ratio circuit board drilling device. The utility model provides a high aspect ratio circuit board metallization back drilling device with a fixing function. The utility model provides such a high aspect ratio circuit board drilling device, including a mounting seat, a first mounting block, an electric push rod, a motor and a drill bit, the top of the support rod is connected to the first mounting block, the front of the first mounting block is equipped with an electric push rod, the telescopic rod of the electric push rod is equipped with a motor, and the motor output shaft is equipped with a drill bit. By moving the circuit board backward and squeezing the fixed plates on both sides to rotate, the first torsion spring is deformed, and then the fixed plate fixes and clamps the circuit board under the action of the first torsion spring.

[0004] In the above scheme, since the motor will generate debris and dust when drilling the circuit board, and since the circuit board is a high-precision electronic component, the dust on the surface of the circuit board will have a great impact on the product and its accuracy. In order to solve the impact of dust, we propose a high aspect ratio circuit board drilling device. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a high aspect ratio circuit board drilling device, which solves the problem that dust falling on the surface of the circuit board will have a great impact on the product and its accuracy through an air jet mechanism.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The bottom base is rotatably mounted with a first threaded rod, the upper end surface of the base is slidably mounted with a moving frame, the outer surface of the first threaded rod is threadedly screwed with the moving frame, the right end surface of the first threaded rod is fixedly mounted with a first motor, the first motor is fixedly mounted on one side of the base, a moving plate is slidably mounted on one side of the moving frame, a moving block is slidably mounted on one side of the moving plate, and a second threaded rod is rotatably mounted on the inner wall of the moving plate;

[0008] The outer surface of the second threaded rod is threadedly connected to the moving block, a second motor is fixedly mounted on the upper end surface of the moving plate, an output end of the second motor is fixedly mounted on the second threaded rod, a drilling motor for drilling holes in the circuit board is mounted on the bottom of the moving block, a fixing mechanism for fixing the circuit board is mounted on the upper end surface of the base, and an air jet mechanism for cleaning debris generated by drilling holes in the circuit board is mounted on the upper end surface of the base.

[0009] Furthermore, the fixing mechanism includes two groups of sliding plates, the sliding plates are fixedly mounted on the upper end surface of the base, a fixing plate is fixedly mounted on the upper end surface of the sliding plates, two groups of clamping plates are slidably mounted on the inner wall of the sliding plates, abutment plates for abutting and fixing the circuit board are fixedly mounted on the outer surface of the clamping plates, and a telescopic arm is fixedly mounted on one side of the clamping plates.

[0010] Furthermore, a first cylinder is fixedly installed on one side of the moving block, the first cylinder is fixedly connected to the telescopic arm, a first air plug is slidably installed on the inner wall of the first cylinder, a first spring is abutted against the upper end surface of the first air plug and the inner wall of the first cylinder, and a first push column is fixedly installed on the lower end surface of the first air plug.

[0011] Furthermore, the jet mechanism includes a second cylinder, a second air plug is slidably installed on the inner wall of the second cylinder, a third spring is installed between the upper end surface of the second air plug and the inner wall of the second cylinder, a second push column is fixedly installed on the bottom of the second air plug, an air outlet plate is fixedly installed on the bottom of the movable plate, the second cylinder is fixedly connected to the air outlet plate, and a movable plate is slidably installed on one side of the air outlet plate.

[0012] Furthermore, a damper is fixedly installed on the upper surface of the movable plate, and the end of the damper away from the movable plate is fixedly installed on the movable frame. A rotating rod is rotatably installed on the bottom of the movable frame, and the right end of the rotating rod is rotatably installed on the movable plate. A second push column that can squeeze the rotating rod is fixedly installed on the bottom of the drilling motor.

[0013] Furthermore, a rubber pad is provided on one side of the abutment plate.

[0014] Beneficial Effects

[0015] The utility model provides a circuit board drilling device with a high aspect ratio. Compared with the prior art, it has the following beneficial effects:

[0016] The second push pin inside the second cylinder will also be squeezed by the fixed plate. At this time, the second air plug will continue to squeeze the gas inside the second cylinder. When the second push pin presses the rotating rod, the rotating rod drives the movable plate to move up, and the movable plate moves up along the sliding column. The movable plate will not block the air holes, and the gas will be ejected from the air holes. The dust on the surface of the circuit board is removed by accumulating force to prevent dust from falling on the surface of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top view of the main body of the utility model;

[0018] Figure 2 It is a bottom schematic diagram of the main body of the utility model;

[0019] Figure 3 It is a rear view of the main body of the utility model;

[0020] Figure 4 It is a schematic diagram of the fixing mechanism structure of the main body of the utility model;

[0021] Figure 5 It is a schematic diagram of the splint structure of the main body of the utility model.

[0022] Figure 6 It is the internal structure diagram of the telescopic arm of the main body of the utility model;

[0023] Figure 7 It is a diagram of the internal structure of the second cylinder of the main body of the utility model;

[0024] Figure 8 It is a position diagram of the movable plate of the main body of the utility model;

[0025] Fig. 9 This is a position diagram of the second push column of the main body of the utility model.

[0026] In the figure: 1, base; 2, moving frame; 3, first threaded rod; 4, second folding tube; 5, first motor; 6, second motor; 7, second threaded rod; 8, third motor; 9, third threaded rod; 10, moving block; 11, drilling motor; 12, first cylinder; 13, second cylinder; 14, moving plate; 15, first folding tube; 16, telescopic arm; 17, first spring; 18, fixed plate; 19, clamping plate; 20, sliding plate; 21, first air plug; 22, first push column; 23, abutment plate; 24, second spring; 25, sliding column; 26, air hole; 27, rotating rod; 28, damper; 29, movable plate; 30, air outlet plate; 31, second push column; 32, second air plug; 33, third spring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example 1: Please refer to Figure 1-3The utility model provides a technical solution: a high aspect ratio circuit board drilling device, comprising a bottom base 1, a first threaded rod 3 is rotatably mounted on the bottom base 1, a moving frame 2 is slidably mounted on the upper end surface of the bottom base 1, the outer surface of the first threaded rod 3 is threadedly connected to the moving frame 2, and a first motor 5 is fixedly mounted on the right end surface of the first threaded rod 3. Please refer to Figure 3 The first motor 5 is fixedly installed on one side of the base 1, and a third threaded rod 9 is installed on one side of the mobile frame 2 for horizontal rotation. A third motor 8 is fixedly installed on one side of the mobile frame 2, and the output end of the third motor 8 is fixedly installed with one end of the third threaded rod 9. The outer surface of the third threaded rod 9 is threadedly screwed with a moving plate 14. When it is necessary to punch holes on the left and right sides of the circuit board, it is only necessary to start the third motor 8, and the third motor 8 drives the third threaded rod 9 to rotate. Because the moving plate 14 is threadedly screwed with the outer surface of the third threaded rod 9, the moving plate 14 will be driven by the third threaded rod 9, and the rotation of the third threaded rod 9 causes the moving plate 14 to move left and right, which is more The drilling motor 11 is used to drill holes in the circuit board over a large range. A moving plate 14 is slidably installed on one side of the moving frame 2, and a moving block 10 is slidably installed on one side of the moving plate 14. A second threaded rod 7 is rotatably installed on the inner wall of the moving plate 14, and the outer surface of the second threaded rod 7 is threadedly screwed with the moving block 10. A second motor 6 is fixedly installed on the upper end surface of the moving plate 14, and the output end of the second motor 6 is fixedly installed on the second threaded rod 7. A drilling motor 11 for drilling holes in the circuit board is installed at the bottom of the moving block 10, a fixing mechanism for fixing the circuit board is installed on the upper end surface of the base 1, and an air jet mechanism for cleaning debris generated by drilling holes in the circuit board is installed on the upper end surface of the base 1.

[0029] Example 2: Please refer to Figure 4-6The fixing mechanism includes two sets of sliding plates 20, which are fixedly mounted on the upper end surface of the base 1, and a fixing plate 18 is fixedly mounted on the upper end surface of the sliding plate 20. Two sets of clamping plates 19 are slidably mounted on the inner wall of the sliding plate 20, and abutment plates 23 for abutting and fixing the circuit board are fixedly mounted on the outer surface of the clamping plates 19. The two sets of clamping plates 19 are cross-abutted, and a telescopic arm 16 is fixedly mounted on one side of the clamping plates 19. A second spring 24 is installed inside the telescopic arm 16. When the first air plug 21 moves upward, the first air plug 21 pushes the air inside the first cylinder 12 into the first folding tube 15. When air enters the telescopic arm 16, the telescopic arm 16 is filled with gas and becomes longer. When the first air plug 21 moves downward, the first cylinder 12 draws air into the telescopic arm 16, and the telescopic arm 16 contracts. In order to prevent the air inside the telescopic arm 16 from The air is not completely sucked out by the first cylinder 12 to reach a fully contracted state, so the second spring 24 can use its contracted pulling force to better contract the telescopic arm 16. The first cylinder 12 is fixedly installed on one side of the moving block 10, and a first folding tube 15 is connected between the first cylinder 12 and the telescopic arm 16. Because the first folding tube 15 has a section that is a folded rubber tube, when the moving block 10 rises, the first folding tube 15 will be pulled up, so the folded part of the first folding tube 15 can well solve the problem that the first folding tube 15 will break due to the action of tension when it is pulled up. A first air plug 21 is slidably installed on the inner wall of the first cylinder 12, and the upper end surface of the first air plug 21 is abutted against the inner wall of the first cylinder 12 by a first spring 17, and the lower end surface of the first air plug 21 is fixedly installed with a first push column 22.

[0030] See also Figure 1 , 7, 8, 9, the jet mechanism includes a second cylinder 13, a second air plug 32 is slidably mounted on the inner wall of the second cylinder 13, a third spring 33 is mounted between the upper end surface of the second air plug 32 and the inner wall of the second cylinder 13, a second push column 31 is fixedly mounted on the bottom of the second air plug 32, a second folding tube 4 is fixedly connected to the upper end surface of the second cylinder 13, an end of the second folding tube 4 away from the second cylinder 13 is fixedly connected to an air outlet plate 30, the effect of the second folding tube 4 is the same as that of the first folding tube 15, which will not be elaborated here, a plurality of air holes 26 are arranged inside the air outlet plate 30, because if the number of air holes 26 is large, the gas transmitted from the inside of the second cylinder 13 can be dispersed, and the second folding tube 4 can be fixedly connected to the upper end surface of the second cylinder 13, and the second folding tube 4 can be fixedly connected to the end of the second folding tube 4 away from the second cylinder 13, and the air outlet plate 30 can be fixedly connected to the upper end surface of the second cylinder 13, and the second folding tube 4 can be fixedly connected to the end of the second folding tube 4 away from the second cylinder 13, and the effect of the second folding tube 4 is the same as that of the first folding tube 15, which will not be elaborated here, and a plurality of air holes 26 are arranged inside the air outlet plate 30, because if the number of air holes 26 is large, the gas transmitted from the inside of the second cylinder 13 can be dispersed, and the second folding tube 4 can be fixedly connected to the upper end surface of the second cylinder 13, and the second folding tube 4 can be fixedly connected to the end of the second folding tube 4 away from the second cylinder In order to better clean the debris from the circuit board, a movable plate 29 is slidably installed on one side of the air outlet plate 30, and two sets of sliding columns 25 are fixedly installed between the movable plate 14 and the air outlet plate 30. The outer surface of the sliding column 25 is slidably installed with the movable plate 29, and the sliding column 25 can better guide the movable plate 29, and can make the movable plate 29 lifted to a higher height by the rotating rod 27. A damper 28 is fixedly installed on the upper end surface of the movable plate 29, and one end of the damper 28 away from the movable plate 29 is fixedly installed with the movable frame 2, and a rotating rod 27 is rotatably installed at the bottom of the movable frame 2, and the right end of the rotating rod 27 is rotatably installed with the movable plate 29, please refer to Figure 8 A second push column 31 is fixedly installed at the bottom of the drilling motor 11 and can squeeze the rotating rod 27.

[0031] Working principle: place the circuit board on the clamping plate 19, start the first motor 5, the first motor 5 drives the first threaded rod 3 to rotate, the first threaded rod 3 drives the movable frame 2 to move forward and backward, the movable frame 2 drives the drilling motor 11 to move forward and backward, start the third motor 8, the third motor 8 drives the third threaded rod 9 to rotate. Because the movable plate 14 and the outer surface of the third threaded rod 9 are threadedly connected, the movable plate 14 will be driven by the third threaded rod 9, and the rotation of the third threaded rod 9 causes the movable plate 14 to move left and right. When drilling is required, start the second motor 6 to drive the second threaded rod 7 to rotate, and the rotation of the second threaded rod 7 drives the movable block 10 to move, and the movable block 10 drives the drilling motor 11 to move downward, the first push column 22 and the second push column 31 abut against the fixed plate 18, and the first air plug 21 is squeezed to move upward. At this time, the air inside the first cylinder 12 and the third spring 33 is squeezed, and the gas inside the first cylinder 12 will enter the telescopic arm 16 through the two groups of first folding tubes 15. The telescopic arm 16 is filled with gas and drives the two groups The clamping plate 19 moves relative to each other. At this time, the plate 23 will clamp the circuit board, and the second push column 31 inside the second cylinder 13 will also be squeezed by the fixed plate 18. At this time, the second gas plug 32 will continue to squeeze the gas inside the second cylinder 13. When the second push column 31 presses the rotating rod 27, the rotating rod 27 drives the movable plate 29 to move up. The movable plate 29 moves up along the sliding column 25. The movable plate 29 will not block the air hole 26. The gas will be ejected from the air hole 26, and the force will be accumulated first, and the movable plate 29 will be driven by the rotating rod 27. The plate 29 moves upward to achieve the effect of strengthening the gas. When the moving block 10 moves upward, the second spring 24 and the third spring 33 inside the second cylinder 13 and the telescopic arm 16 can better reset the second gas plug 32. And because it takes time to pump air when the moving block 10 moves the second cylinder 13 upward to prevent the movable plate 29 from blocking the air hole 26, a damper 28 is provided to prevent the movable plate 29 from descending too fast and blocking the air hole 26, making it impossible to pump air inside the second cylinder 13.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high aspect ratio circuit board drilling device, comprising a bottom base (1), characterized in that: The bottom base (1) is rotatably mounted with a first threaded rod (3), the upper end surface of the base (1) is slidably mounted with a moving frame (2), the outer surface of the first threaded rod (3) is threadedly connected with the moving frame (2), the right end surface of the first threaded rod (3) is fixedly mounted with a first motor (5), the first motor (5) is fixedly mounted on one side of the base (1), a moving plate (14) is slidably mounted on one side of the moving frame (2), a moving block (10) is slidably mounted on one side of the moving plate (14), and a second threaded rod (7) is rotatably mounted on the inner wall of the moving plate (14); The outer surface of the second threaded rod (7) is threadedly connected to the moving block (10); a second motor (6) is fixedly mounted on the upper end surface of the moving plate (14); an output end of the second motor (6) is fixedly mounted on the second threaded rod (7); a drilling motor (11) for drilling holes in a circuit board is mounted on the bottom of the moving block (10); a fixing mechanism for fixing the circuit board is mounted on the upper end surface of the base (1); and an air jet mechanism for cleaning debris generated by drilling holes in the circuit board is mounted on the upper end surface of the base (1).

2. The high aspect ratio circuit board drilling device according to claim 1, characterized in that: The fixing mechanism comprises two groups of sliding plates (20), the sliding plates (20) are fixedly mounted on the upper end surface of the base (1), a fixing plate (18) is fixedly mounted on the upper end surface of the sliding plates (20), two groups of clamping plates (19) are slidably mounted on the inner wall of the sliding plates (20), abutment plates (23) for abutting and fixing the circuit board are fixedly mounted on the outer surface of the clamping plates (19), and a telescopic arm (16) is fixedly mounted on one side of the clamping plates (19).

3. The high aspect ratio circuit board drilling device according to claim 2, characterized in that: A first cylinder (12) is fixedly mounted on one side of the moving block (10); the first cylinder (12) is fixedly connected to the telescopic arm (16); a first air plug (21) is slidably mounted on the inner wall of the first cylinder (12); a first spring (17) is abutted against the upper end surface of the first air plug (21) and the inner wall of the first cylinder (12); and a first push column (22) is fixedly mounted on the lower end surface of the first air plug (21).

4. The high aspect ratio circuit board drilling device according to claim 3, characterized in that: The jet mechanism comprises a second cylinder (13), a second air plug (32) is slidably mounted on the inner wall of the second cylinder (13), a third spring (33) is mounted between the upper end surface of the second air plug (32) and the inner wall of the second cylinder (13), a second push column (31) is fixedly mounted on the bottom of the second air plug (32), an air outlet plate (30) is fixedly mounted on the bottom of the movable plate (14), the second cylinder (13) is fixedly connected to the air outlet plate (30), and a movable plate (29) is slidably mounted on one side of the air outlet plate (30).

5. The high aspect ratio circuit board drilling device according to claim 4, characterized in that: A damper (28) is fixedly mounted on the upper end surface of the movable plate (29); one end of the damper (28) away from the movable plate (29) is fixedly mounted on the movable frame (2); a rotating rod (27) is rotatably mounted on the bottom of the movable frame (2); the right end of the rotating rod (27) is rotatably mounted on the movable plate (29); and a second push column (31) capable of squeezing the rotating rod (27) is fixedly mounted on the bottom of the drilling motor (11).

6. The high aspect ratio circuit board drilling device according to claim 5, characterized in that: A rubber pad is provided on one side of the abutment plate (23).

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