PCB micro drill

Abstract

The utility model relates to the technical field of micro drill bit, concretely to a PCB micro drill bit, including first connecting block, the first connecting block bottom swing is provided with second connecting block, the first connecting block and second connecting block outer surface are provided with the pull -down buckle fixing mechanism. The utility model can make the pull -ring of one end buckle interlock with the buckle to complete the disassembly and integration between the first connecting block and second connecting block by artificial wrenching the board buckle, the first connecting block bottom and the clamping strip of sleeve column two sides and the clamping groove of second connecting block inner wall two sides interlock, can play the connection reinforcing effect, guarantee the stability of device, the device is provided with pull -down buckle fixing mechanism, and the staff only needs to pull the board buckle to change the connection between the pull -ring and buckle, completes the disassembly and integration between the first connecting block and second connecting block, and the operation is simple and convenient, since the second connecting block is the carrier of drill bit, so can replace the drill bit of different specifications through the split, and then the application scope of device is further improved.

Description

Technical Field

[0001] This utility model relates to the field of micro drill technology, specifically a PCB micro drill. Background Technology

[0002] With the development of the electronics industry, the micro-via manufacturing technology of printed circuit boards (PCBs) determines the degree of integration of electronic products. Currently, the vast majority of PCB micro-via manufacturing uses mechanical drilling, which typically employs small-diameter drill bits with a high failure rate. The materials used in PCB micro-drills are generally cemented carbide; due to their small diameter, manufacturing costs increase as the drill bit diameter decreases.

[0003] As shown in the announcement number CN 215471629 U, a miniature drill bit for PCB processing includes a drill shank, a drill rod fixed to one end of the drill shank, and a shock-resistant component. The drill rod includes a cutting groove and a chip removal groove. The cutting groove is located at the end of the drill rod, and the chip removal groove is located on the outer wall of the drill rod and communicates with the cutting groove. The shock-resistant component includes a support platform, a bracket, and a contact platform. The support platform is fixed to the outer wall of the drill shank. This device does not have a pull-button fixing mechanism. The operator cannot change the connection between the pull ring and the buckle by simply pulling the plate buckle to complete the disassembly and assembly between the first connecting block and the second connecting block. Conventional drill bits are one piece and cannot be disassembled to replace drill bits of different specifications. The applicability of the device is greatly reduced. There is also no setting of multiple disassembly structures. The large size is not conducive to batch transportation, and replacing drill bits requires a lot of time. Utility Model Content

[0004] The purpose of this invention is to provide a PCB micro drill bit to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A PCB miniature drill bit includes a first connecting block, a second connecting block movably disposed at the bottom end of the first connecting block, and a pull-button fixing mechanism disposed on the outer surfaces of the first and second connecting blocks. The pull-button fixing mechanism includes a fixing component, a plate buckle, a pull ring, a snap fastener, and fixing screws. Several fixing components are fixedly disposed around the outer surface of the first connecting block, a plate buckle is movably disposed inside the fixing component, and pull rings are movably disposed on both sides of the plate buckle. Several snap fasteners are fixedly disposed around the outer surface of the second connecting block, the snap fasteners are movably connected to the pull rings, and two fixing screws are fixedly disposed on one side of the snap fasteners.

[0007] Preferably, the second connecting block has a placement groove in the center and slots on both sides of the inner wall of the second connecting block. The slots fit into the slots and the slot strips, which provide auxiliary reinforcement for the first connecting block and the second connecting block.

[0008] Preferably, a drill bit is fixedly provided at the bottom end of the second connecting block, and a spiral groove is provided at the bottom end of the drill bit. The spiral groove at the bottom end of the drill bit can increase the drilling force.

[0009] Preferably, a sleeve post is fixedly provided at the bottom end of the first connecting block. The sleeve post is movably connected to the placement groove. A retaining strip is fixedly provided on both sides of the outer side of the sleeve post. The retaining strip is movably connected to the retaining groove. The retaining strip and the retaining groove are connected by mortise and tenon joints to insert the sleeve post into the placement groove inside the second connecting block, thereby playing a role in connection and reinforcement and preventing its displacement.

[0010] Preferably, a first fixing plate is fixedly provided at the top of the first connecting block, and a second fixing plate is movably provided at the top of the first fixing plate. The first fixing plate and the second fixing plate are movably connected and can be disassembled for easy transportation later.

[0011] Preferably, the first and second fixed plates have threaded grooves inside, and a positioning screw is movably disposed inside the threaded groove. A nut is movably disposed around the outside of the positioning screw. By passing the positioning screw through the screw groove inside the first and second fixed plates and fixing it with the nut, the connection part can be reinforced and the overall stability of the device can be ensured.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This is a PCB miniature drill bit. The device firstly fixes the top of the second fixed plate to the traction rod of the drive motor. The first fixed plate and the second fixed plate are then attached and fixed with positioning screws. Therefore, when the motor drives the rotation, it will drive the drill bit to rotate. If the operator needs to change to a different specification of drill bit or disassemble the device, the operator can manually pull the plate buckle so that the pull ring at one end engages with the buckle to complete the disassembly and assembly between the first connecting block and the second connecting block. The bottom end of the first connecting block and the two sides of the sleeve post engage with the slots on both sides of the inner wall of the second connecting block, which can play a role in connection reinforcement and ensure the stability of the device.

[0014] 2. This PCB miniature drill bit is equipped with a pull-button fixing mechanism. The operator only needs to pull the plate buckle to change the connection between the pull ring and the buckle, and complete the disassembly and assembly of the first connecting block and the second connecting block. The operation is simple and convenient. Since the second connecting block is the carrier of the drill bit, different specifications of drill bits can be replaced by disassembly, thereby improving the applicability of the device. The setting of multiple disassembly structures not only saves a lot of time when replacing drill bits, but also facilitates batch transportation in the later stage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2This is a partial structural installation diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the snap-fit ​​connection structure of this utility model.

[0018] Figure 4 This utility model Figure 2 Enlarged diagram of point A in the middle.

[0019] In the diagram: 1. First connecting block; 2. Second connecting block; 3. Fixing component; 4. Plate buckle; 5. Pull ring; 6. Buckle; 7. Fixing screw; 8. Placement groove; 9. Slot; 10. Drill bit; 11. Spiral groove; 12. Sleeve; 13. Clip; 14. First fixing plate; 15. Second fixing plate; 16. Threaded groove; 17. Positioning screw; 18. Nut. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4 As shown, this utility model provides a technical solution:

[0022] A PCB miniature drill bit includes a first connecting block 1, a second connecting block 2 movably disposed at the bottom end of the first connecting block 1, and a pull-button fixing mechanism disposed on the outer surface of the first connecting block 1 and the second connecting block 2. The pull-button fixing mechanism includes a fixing component 3, a plate buckle 4, a pull ring 5, a snap fastener 6, and a fixing screw 7. Several fixing components 3 are fixedly disposed around the outer surface of the first connecting block 1, a plate buckle 4 is movably disposed inside the fixing component 3, and pull rings 5 ​​are movably disposed on both sides of the outer surface of the plate buckle 4. Several snap fasteners 6 are fixedly disposed around the outer surface of the second connecting block 2, and the snap fasteners 6 are movably connected to the pull rings 5. Two fixing screws 7 are fixedly disposed on one side of the snap fastener 6.

[0023] In this embodiment, preferably, a placement groove 8 is provided in the center of the second connecting block 2, and slots 9 are provided on both sides of the inner wall of the second connecting block 2. The placement groove can be movably connected with the sleeve column, and the slots are fitted and connected with the slot strip, which plays an auxiliary reinforcing role for the first connecting block and the second connecting block.

[0024] In this embodiment, preferably, a drill bit 10 is fixedly provided at the bottom end of the second connecting block 2, and a spiral groove 11 is provided at the bottom end of the drill bit 10. The spiral groove at the bottom end of the drill bit can increase the drilling force.

[0025] In this embodiment, preferably, a sleeve post 12 is fixedly provided at the bottom end of the first connecting block 1. The sleeve post 12 is movably connected to the placement groove 8. A retaining strip 13 is fixedly provided on both sides of the outer side of the sleeve post 12. The retaining strip 13 is movably connected to the retaining groove 9. The retaining strip and the retaining groove are connected by mortise and tenon joints to insert the sleeve post into the placement groove inside the second connecting block, thereby playing a role in connection and reinforcement and preventing displacement.

[0026] In this embodiment, preferably, a first fixing plate 14 is fixedly provided at the top of the first connecting block 1, and a second fixing plate 15 is movably provided at the top of the first fixing plate 14. The first fixing plate and the second fixing plate are movably connected and can be disassembled for easy transportation later.

[0027] In this embodiment, preferably, the first fixed plate 14 and the second fixed plate 15 are provided with threaded grooves 16, and a positioning screw 17 is movably disposed inside the threaded groove 16. A nut 18 is movably disposed around the outside of the positioning screw 17. By passing the positioning screw through the screw groove inside the first fixed plate and the second fixed plate and fixing it with the nut, the connection part can be reinforced to ensure the overall stability of the device.

[0028] In this embodiment, a PCB miniature drill bit is used. First, the top of the second fixing plate 15 is fixedly connected to the traction rod of the drive motor. The first fixing plate 14 and the second fixing plate 15 are then attached and fixed using positioning screws 17. Therefore, when the motor drives the rotation, it will cause the drill bit 10 to rotate. If the operator needs to change to a different specification drill bit 10 or disassemble the device, they can manually pull the plate buckle 4 so that the pull ring 5 at one end engages with the buckle 6 to complete the disassembly and assembly of the first connecting block 1 and the second connecting block 2. The bottom end of the first connecting block 1 and the retaining strips 13 on both sides of the sleeve post 12 are connected to the second... The slots 9 on both sides of the inner wall of the connecting block 2 engage to reinforce the connection and ensure the stability of the device. The device is equipped with a pull-button fixing mechanism. The operator only needs to pull the plate buckle 4 to change the connection between the pull ring 5 and the buckle 6, thus completing the disassembly and assembly between the first connecting block 1 and the second connecting block 2. The operation is simple and convenient. Since the second connecting block 2 is the carrier of the drill bit 10, different specifications of drill bits 10 can be replaced by disassembly, thereby improving the applicability of the device. The design of multiple disassembly structures not only saves a lot of time when replacing the drill bit 10, but also facilitates batch transportation in the later stage.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A PCB micro drill bit, comprising a first connecting block (1), a second connecting block (2) movably disposed at the bottom end of the first connecting block (1), and a pull-button fixing mechanism disposed on the outer surface of the first connecting block (1) and the second connecting block (2), the pull-button fixing mechanism comprising a fixing member (3), a plate buckle (4), a pull ring (5), a buckle (6) and a fixing screw (7), a plurality of fixing members (3) being fixedly disposed around the outer surface of the first connecting block (1), a plate buckle (4) being movably disposed inside the fixing member (3), a pull ring (5) being movably disposed on both sides of the outer surface of the plate buckle (4), a plurality of buckles (6) being fixedly disposed around the outer surface of the second connecting block (2), the buckles (6) being movably connected to the pull rings (5), and two fixing screws (7) being fixedly disposed on one side of the buckles (6).

2. A PCB miniature drill bit according to claim 1, characterized in that: The second connecting block (2) has a placement groove (8) in the center and slots (9) on both sides of the inner wall of the second connecting block (2).

3. A PCB miniature drill bit according to claim 1, characterized in that: The bottom end of the second connecting block (2) is fixedly provided with a drill bit (10), and the bottom end of the drill bit (10) is provided with a spiral groove (11).

4. A PCB miniature drill bit according to claim 1, characterized in that: The bottom end of the first connecting block (1) is fixedly provided with a sleeve post (12), the sleeve post (12) is movably connected to the placement groove (8), and the outer sides of the sleeve post (12) are fixedly provided with locking strips (13), the locking strips (13) are movably connected to the locking groove (9).

5. A PCB miniature drill bit according to claim 1, characterized in that: The first connecting block (1) has a first fixing plate (14) fixedly installed at its top end, and a second fixing plate (15) is movably installed at its top end.

6. A PCB miniature drill bit according to claim 5, characterized in that: The first fixed plate (14) and the second fixed plate (15) are provided with threaded grooves (16), and a positioning screw (17) is movably arranged inside the threaded groove (16), and a nut (18) is movably arranged around the outside of the positioning screw (17).

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