A drill bit for processing short grooves of PCB

Abstract

The utility model relates to the technical field of drill needles, and in particular to a drill needle for processing short grooves in PCB. The utility model provides a drill needle for processing short grooves in PCB, including a clamping rod, a drill needle, a chamfered surface, a sliding ring, a rotating ring and movable leaves, etc. The drill needle is installed at the bottom of the clamping rod, and the bottom surface of the drill needle is cut with a chamfered surface along the edge. The outer side of the clamping rod is evenly opened with a number of three clamping grooves for clamping the output shaft of the motor along the ring, and a sliding ring is clamped at the lower side of the clamping rod. The sliding ring is rotatably connected to the rotating ring, and the rotating ring is located on the outer side of the clamping rod. A plurality of movable leaves are evenly rotatably connected to the upper ring of the rotating ring. The drill needle and the clamping rod rotate at high speed to drill holes in the PCB. The movable leaves will rotate and unfold due to the wind force, and then block part of the wind, so that the wind accumulates downward to blow away the debris generated by the drilling, so as to avoid the debris affecting the angle of the drill needle, ensure the accurate hole rotation of the drill needle, and improve the quality of the finished product.

Description

Technical Field

[0001] The utility model relates to the technical field of drill needles, in particular to a drill needle for processing short grooves in a PCB. Background Art

[0002] With the innovation of PCB board materials, more and more short slot holes need to be processed on PCB boards. As a subsidiary industry of circuit board processing, mechanical drilling has invested a lot of energy in developing special drill bits suitable for PCB boards.

[0003] The patent with publication number CN210725516U discloses a drill needle for PCB, including a blade and a handle connected to each other, two groups of blade structures are arranged on the top of the blade, and the two groups of blade structures are symmetrically distributed. Each group of blade structures includes a main blade, a first auxiliary blade and a second auxiliary blade, and the main blade, the first auxiliary blade and the second auxiliary blade are connected and distributed in sequence in a fan shape around the top center of the blade; the inner end of the second auxiliary blade in each group of blade structures is connected to the inner end of the main blade in the adjacent blade structure to form a step structure; two spiral chip grooves are also arranged on the blade, and the two spiral chip grooves cooperate with the main blades in the two groups of blade structures to form corresponding cutting edges.

[0004] The above patent still has the following shortcomings: the above patent changes the blade of the drill needle to allow the drill needle to drill into the plate better, but the drill needle will produce debris when drilling, and some of the debris will accumulate on the blade of the drill needle and the plate. These debris will affect the shape and groove surface of the drill hole, resulting in insufficient drilling precision and inaccuracy. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings, the utility model provides a drill needle for processing short grooves in PCB. The technical solution of the utility model is: a drill needle for processing short grooves in PCB, comprising a clamping rod, a drill needle, a chamfered surface, a sliding ring, a rotating ring, a movable leaf, a clamping ball and an elastic member, a drill needle is installed at the bottom of the clamping rod, a chamfered surface is cut along the edge of the bottom surface of the drill needle, a plurality of three clamping grooves for clamping the output shaft of the motor are evenly opened along the ring on the outer side of the clamping rod, a sliding ring is clamped at the lower side of the clamping rod, a rotating ring is rotatably connected to the sliding ring, the rotating ring is located at the outer side of the clamping rod, a plurality of movable leaves are evenly rotatably connected to the upper edge of the rotating ring, four clamping balls are evenly slidably connected to the upper edge of the sliding ring, an elastic member is connected between the clamping ball and the inside of the sliding ring, four clamping grooves are evenly opened along the ring at the connection between the lower side of the clamping rod and the sliding ring, and the elastic member is clamped to the clamping groove.

[0006] Furthermore, the high-speed rotation of the clamping rod and the drill needle generates airflow, which causes the movable leaves to rotate outward and unfold due to the wind force.

[0007] Furthermore, it also includes a protrusion. Four protrusions are evenly fixed on the upper edge of the connection between the lower side of the clamping rod and the sliding ring. The protrusions and the clamping grooves are spaced apart on the clamping rod. Four limiting grooves are evenly opened on the inner side of the sliding ring along the ring. The limiting grooves and the clamping balls are spaced apart on the sliding ring.

[0008] Furthermore, the protrusion is engaged with the limiting groove, which can increase the stability between the sliding ring and the engaging rod.

[0009] Furthermore, it also includes a tooth plate, and tooth plates for increasing friction are fixed on both sides of the clamping groove.

[0010] Furthermore, it also includes a protective rubber block, which is clamped on the clamping rod at a position on the upper side of the sliding ring, and a plurality of ventilation holes are evenly opened on the protective rubber block.

[0011] The beneficial effects are: 1. The drill needle and the clamping rod rotate at high speed to drill holes in the PCB. The movable leaves will rotate and unfold due to the wind force, thereby blocking part of the wind, so that the wind accumulates downward and can blow away the debris generated by drilling, avoiding the debris from affecting the angle of the drill needle, ensuring the accurate rotation of the drill needle, and improving the quality of the finished product;

[0012] 2. Add a card ball to fix the sliding ring, so that the movable leaf can be detachable, which is convenient for quick installation and use when the card rod or drill needle needs to be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a structural schematic diagram of the drill needle and the beveled surface of the utility model.

[0015] Figure 3 It is a structural schematic diagram of the components such as the sliding ring, the rotating ring and the movable leaves of the utility model.

[0016] Figure 4 It is a structural schematic diagram of the rotating ring, movable leaves, and clamping balls of the utility model.

[0017] Figure 5 It is a structural schematic diagram of the clamping ball and the elastic member of the utility model.

[0018] Figure 6 It is a structural schematic diagram of the components such as the clamping rod, the protrusion and the tooth plate of the utility model.

[0019] In the accompanying drawings: 1_clamping rod, 2_drill needle, 4_beveled surface, 5_clamping groove, 6_sliding ring, 7_rotating ring, 8_movable leaf, 9_clamping ball, 10_elastic member, 11_clamping groove, 1101_bump, 1102_limiting groove, 12_tooth plate, 13_protective rubber block, 14_ventilation hole. DETAILED DESCRIPTION

[0020] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Embodiment 1: A drill bit for processing short slots in PCB, such as Figure 1-Figure 6 As shown, it includes a clamping rod 1, a drill needle 2, a beveled surface 4, a sliding ring 6, a rotating ring 7, movable leaves 8, a clamping ball 9 and an elastic member 10. The bottom of the clamping rod 1 is equipped with a drill needle 2, and the bottom surface of the drill needle 2 is cut with a beveled surface 4 along the edge. The outer side of the clamping rod 1 is evenly provided with four clamping grooves 5 for clamping the output shaft of the motor along a ring. The lower side of the clamping rod 1 is clamped with a sliding ring 6, and the sliding ring 6 is rotatably connected with a rotating ring 7. The rotating ring 7 is located on the outer side of the clamping rod 1. A plurality of movable leaves 8 are evenly rotatably connected along the upper ring of the rotating ring 7. The clamping rod 1 and the drill needle 2 rotate at a high speed to generate airflow, which will cause the movable leaves 8 to rotate and unfold outward due to the wind force. Four clamping balls 9 are evenly slidably connected along the upper ring of the sliding ring 6. An elastic member 10 is connected between the clamping ball 9 and the inside of the sliding ring 6. Four clamping grooves 11 are evenly opened along the upper ring of the connection between the lower side of the clamping rod 1 and the sliding ring 6, and the elastic member 10 is clamped with the clamping grooves 11.

[0022] When the device is used to drill holes in a PCB, the PCB is placed on a workbench, the clamping rod 1 is clamped with the motor output shaft, the clamping groove 5 on the clamping rod 1 is clamped and fixed with the output shaft, after being fixed, the motor is held, the drill needle 2 is aligned with the target point, the motor is started, and the motor is rotated to drive the clamping rod 1 and the drill needle 2 to rotate. The drill needle 2 rotates at a high speed to drill holes in the PCB, and the chamfered surface 4 can ensure that the drill needle 2 is accurately rotated into the plate without being easily displaced. The clamping rod 1 and the drill needle 2 rotate at a high speed to generate airflow, which will cause the movable leaves 8 to rotate upward and swing away, and the rotating ring 7 is rotatably connected with the sliding ring 6. When the airflow enters the gap between the movable leaves 8, the rotating ring 7 will rotate along the sliding ring 6 to make the movable leaves 8 easier to unfold. The movable leaves 8 are unfolded to block part of the upward air, so that the air gathers at the bottom, which can blow away the debris on the PCB and blow away the debris, thereby preventing the debris generated by drilling from affecting the accuracy of the drill needle 2 and improving the product processing quality. When the drilling is completed, the motor stops working. The clamping rod 1 and the drill needle 2 stop rotating, and no wind force is generated. The movable leaf 8 will also rotate downward and retract due to its own gravity, thus completing the drilling work on the PCB. The sliding ring 6 is clamped and fixed on the clamping rod 1. If it is necessary to partially remove the movable leaf 8, the sliding ring 6 can be pushed downward with force to drive the rotating ring 7 and the movable leaf 8 to move downward. The card ball 9 moves with the sliding ring 6 and is squeezed by the card groove 11 to move outward, so that the elastic member 10 is compressed, and the card ball 9 is no longer clamped with the card groove 11, so that the sliding ring 6 is not clamped. When the movable ring 6 is loosened, the sliding ring 6 can be smoothly removed downward. When the card ball 9 is no longer blocked, it will move inward and reset under the reset action of the elastic member 10. Similarly, when installing the sliding ring 6, the sliding ring 6 is inserted into the outer side of the clamping rod 1 from the bottom, so that the card ball 9 is squeezed and moved inward. The elastic member 10 is compressed, and the sliding ring 6 is moved to align the card ball 9 with the card slot 11. The card ball 9 will move inward and engage with the card slot 11 under the reset action of the elastic member 10, thereby completing the fixation of the sliding ring 6.

[0023] Embodiment 2: Based on embodiment 1, Figure 1 , Figure 4 and Figure 6 As shown, it also includes a protrusion 1101, a tooth plate 12 and a protective rubber block 13. Four protrusions 1101 are evenly fixed on the upper edge of the connection between the lower side of the clamping rod 1 and the sliding ring 6. The protrusions 1101 and the clamping grooves 11 are spaced apart on the clamping rod 1. Four limiting grooves 1102 are evenly opened on the inner side of the sliding ring 6 along the ring. The limiting grooves 1102 and the clamping balls 9 are spaced apart on the sliding ring 6. The protrusions 1101 are clamped with the limiting grooves 1102 to increase the stability between the sliding ring 6 and the clamping rod 1. Tooth plates 12 for increasing friction are fixed on both sides of the clamping groove 5. A protective rubber block 13 is clamped at a position on the upper side of the sliding ring 6 on the clamping rod 1, and a plurality of ventilation holes 14 are evenly opened on the protective rubber block 13.

[0024] Adding the protrusion 1101 to cooperate with the limiting groove 1102 can improve the stability of the sliding ring 6 and the clamping rod 1, and make the sliding ring 6 not easy to loosen easily. When disassembling the sliding ring 6, push the sliding ring 6 downward so that the limiting groove 1102 is not engaged with the protrusion 1101, and the disassembly is completed. When installing, align the limiting groove 1102 with the protrusion 1101, move the sliding ring 6, and make the internal limiting groove 1102 cooperate with the protrusion 1101 to clamp the sliding ring 6. When using this device, the clamping rod 1 is clamped with the output shaft of the motor. Adding the tooth plate 12 on the clamping groove 5 can increase the friction between the clamping groove 5 and the output shaft to prevent the clamping rod 1 from loosening. When drilling holes in the PCB, the protective rubber block 13 can prevent the staff from touching the movable leaf 8 with their hands, and the vent 14 can ensure the circulation of air without affecting the deployment of the movable leaf 8.

[0025] 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 drill bit for processing short slots in PCB, characterized by: The invention comprises a clamping rod (1), a drill needle (2), a chamfered surface (4), a sliding ring (6), a rotating ring (7), a movable leaf (8), a clamping ball (9) and an elastic member (10). The bottom of the clamping rod (1) is provided with a drill needle (2), the bottom surface of the drill needle (2) is cut with a chamfered surface (4) along the edge, the outer side of the clamping rod (1) is evenly provided with a plurality of three clamping grooves (5) for clamping the output shaft of the motor, the lower side of the clamping rod (1) is clamped with a sliding ring (6), and the upper side of the sliding ring (6) is rotatable. A rotating ring (7) is connected, the rotating ring (7) is located outside the clamping rod (1), a plurality of movable leaves (8) are connected to the rotating ring (7) in an annular and uniform rotational manner, four clamping balls (9) are connected to the sliding ring (6) in an annular and uniform sliding manner, elastic members (10) are connected between the clamping balls (9) and the inside of the sliding ring (6), four clamping grooves (11) are evenly opened in an annular manner on the upper edge of the connection between the lower side of the clamping rod (1) and the sliding ring (6), and the elastic members (10) are clamped with the clamping grooves (11).

2. A PCB short slot processing drill bit according to claim 1, characterized in that: The fastening rod (1) and the drill needle (2) rotate at high speed to generate airflow, which causes the movable leaves (8) to rotate outwards and unfold due to the wind force.

3. A PCB short slot processing drill bit according to claim 1, characterized in that: It also includes a protrusion (1101), four protrusions (1101) are evenly fixed in a ring shape on the upper edge of the connection between the lower side of the clamping rod (1) and the sliding ring (6), the protrusions (1101) and the clamping grooves (11) are spaced apart on the clamping rod (1), four limiting grooves (1102) are evenly opened in a ring shape on the inner side of the sliding ring (6), and the limiting grooves (1102) and the clamping balls (9) are spaced apart on the sliding ring (6).

4. A PCB short slot processing drill bit according to claim 3, characterized in that: The protrusion (1101) is engaged with the limiting groove (1102), which can increase the stability between the sliding ring (6) and the engaging rod (1).

5. The PCB short slot processing drill bit according to claim 1, characterized in that: It also includes a tooth plate (12), and tooth plates (12) for increasing friction are fixed on both sides of the clamping groove (5).

6. A PCB short slot processing drill bit according to claim 1, characterized in that: It also includes a protective rubber block (13), which is clamped on a position on the clamping rod (1) located on the upper side of the sliding ring (6), and a plurality of ventilation holes (14) are evenly formed on the protective rubber block (13).

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