PCB drill point with replaceable drill bit

Abstract

The utility model relates to a PCB drill point, in particular to a PCB drill point with a replaceable drill bit. The PCB drill point with the replaceable drill bit comprises a shell, a drill bit body, a clamping block, a first guide rod, a clamping block and a first spring, the lower portion of the drill bit body is connected with the clamping block, the clamping block is connected with the shell in a clamped mode, the upper portion of the shell is provided with a linear groove allowing the clamping block to enter, and the first guide rod is connected with the clamping block in a clamped mode. A plurality of first guide rods are connected to the upper portion in the shell, a clamping block is connected between every two adjacent first guide rods in a sliding mode, and the first guide rods are sleeved with first springs used for assisting resetting. And the push rod is loosened, so that the second spring and the first spring gradually restore to the original shape, then the push rod, the sliding plate, the connecting rod and the clamping block are assisted to move upwards, the clamping block makes contact with the clamping block, the clamping block is fixed in the shell, and therefore the purpose of replacing the drill bit body is achieved, and the drill point cost is reduced.

Description

Technical Field

[0001] The utility model relates to a PCB drill bit, in particular to a PCB drill bit with a replaceable drill head. Background Art

[0002] A PCB board is called a printed circuit board, which is a support for electronic components and also a carrier for electrical connection of electronic components. There are different types such as single-sided boards, double-sided boards, and multi-layer boards. A PCB carrier board drill bit is a tool used in the PCB manufacturing process, usually used to drill through the PCB carrier board for electronic components to enable circuit connection and fixation of electronic components.

[0003] A patent with the patent authorization announcement number CN205660837U discloses a drill bit for processing PCB boards, including a shank and a body provided at one end of the shank. The end of the body away from the shank forms a conical tip, and a spiral main chip removal groove is provided on the body along its body direction to its tip. Although the above patent can apply carbon fiber to the drill bit to change the structure and performance of the drill bit, when processing PCB boards, since the damage probability of the drill bit is relatively high, the drill bit needs to be replaced frequently. However, the body of the drill bit is provided at one end of the shank, which is equivalent to a fixed connection. Therefore, when replacing, the shank and the body need to be replaced together, thus increasing the cost of the drill bit.

[0004] Therefore, there is a particular need for a PCB drill bit with a replaceable drill head to solve the problems existing in the prior art. Summary of the Utility Model

[0005] In order to overcome the defect that in the existing patent, the body is provided at one end of the shank, which is equivalent to a fixed connection, so when replacing, the shank and the body need to be replaced together, thus increasing the cost of the drill bit, the utility model provides a PCB drill bit with a replaceable drill head.

[0006] The present utility model is achieved through the following technical means: A replaceable drill bit PCB drill pin, comprising a housing, a drill bit body, a clamping block, a first guide rod, a clamping block, a first spring, a sliding plate, a second spring, a connecting rod and a pushing rod. The lower part of the drill bit body is connected with a clamping block, the clamping block is clamped with the housing, the upper part of the housing is provided with a cross slot for the clamping block to enter, several first guide rods are connected to the upper part inside the housing, a clamping block is slidably connected between two adjacent first guide rods, a first spring for assisting in resetting is sleeved on the first guide rod, and two ends of the first spring are respectively connected with the clamping block and the housing. A sliding plate is slidably connected to the upper part inside the housing, a second spring for assisting in resetting is connected between the sliding plate and the housing, the sliding plate is connected with connecting rods distributed left and right, the upper ends of the connecting rods are connected with the bottom of the clamping block, a pushing rod is slidably connected to the upper part inside the housing, the rear end of the pushing rod is connected with the front part of the sliding plate, and the front end of the pushing rod protrudes out of the housing. By pulling down the pushing rod, the sliding plate drives the connecting rod to move downward, and the connecting rod drives the clamping block to move downward to be disengaged from the clamping block.

[0007] Optionally, a rubber ring is provided in the chute at the upper part of the housing, and the pushing rod contacts the rubber ring.

[0008] Optionally, it further includes a pin rod. The sliding plate is connected with symmetrically distributed pin rods, and the upper ends of the pin rods are inserted into the inside of the clamping block.

[0009] Optionally, it further includes a second guide rod. Symmetrically distributed second guide rods are connected to the upper part inside the housing, the sliding plate is slidably connected with the second guide rods, and the second spring is sleeved on the second guide rods.

[0010] Optionally, it further includes an inclined ring. An inclined ring for positioning is connected to the upper part of the housing.

[0011] Optionally, the bottom diameter of the drill bit body is the same as the diameter of the circular surface enclosed by the lowermost part of the inclined ring.

[0012] From the above description of the structure of the present utility model, the design starting point, concept and advantages of the present utility model are as follows: 1. By loosening the pushing rod, the second spring and the first spring gradually return to their original states, thereby assisting the pushing rod, the sliding plate, the connecting rod and the clamping block to move upward, making the clamping block contact the clamping block, fixing the clamping block in the housing, so as to achieve the purpose of replacing the drill bit body and reducing the cost of the drill pin.

[0013] 2. By arranging the pin rod to be clamped with the clamping block, the clamping block is further strengthened in the housing.

[0014] 3. By setting an inclined ring, the drill bit body is positioned, enabling the drill bit body to be accurately placed on the housing. Description of the Drawings

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural schematic diagram of the drill bit body and the clamping block of the present invention.

[0017] Figure 3 This is a three-dimensional sectional structural schematic diagram of the clamping block, the first guide rod, and the first spring of the present invention.

[0018] Figure 4 This is a three-dimensional structural schematic diagram of the sliding plate, the connecting rod, and the pin rod of the present invention.

[0019] The markings of each component in the drawings are as follows: 1. Housing, 2. Drill bit body, 3. Clamping block, 4. First guide rod, 5. First spring, 6. Clamping block, 7. Sliding plate, 8. Connecting rod, 9. Pin rod, 10. Pushing rod, 11. Second guide rod, 12. Second spring, 13. Inclined ring. Detailed Embodiment

[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings. It is hereby declared that the orientation terms such as up, down, left, right, front, back, inside, and outside that appear or will appear in the text of the present invention are only based on the drawings of the present invention and do not specifically limit the present invention.

[0021] Embodiment: A PCB drill bit with a replaceable drill bit, refer to Figures 1-4As shown, it includes a shell 1, a drill body 2, a clamping block 3, a first guide rod 4, a clamping block 6, a first spring 5, a sliding plate 7, a second spring 12, a connecting rod 8, a pushing rod 10, a latch rod 9, a second guide rod 11 and an oblique ring 13. The lower part of the drill body 2 is connected with the clamping block 3, the clamping block 3 is clamped with the shell 1, the upper part of the shell 1 is provided with a slot for accommodating the clamping block 3 to enter, a plurality of first guide rods 4 are connected to the upper inner part of the shell 1, a clamping block 6 is slidably connected between two adjacent first guide rods 4, a first spring 5 for assisting resetting is sleeved on the first guide rod 4, the two ends of the first spring 5 are respectively connected to the clamping block 6 and the shell 1, a sliding plate 7 is slidably connected to the upper inner part of the shell 1, a second spring 12 for assisting resetting is connected between the sliding plate 7 and the shell 1, connecting rods 8 distributed on the left and right are connected to the sliding plate 7, and the upper end of the connecting rod 8 is connected to the The bottom of the card block 6 is connected, and a push rod 10 is slidably connected to the upper inner part of the shell body 1. The rear end of the push rod 10 is connected to the front of the sliding plate 7, and the front end of the push rod 10 protrudes out of the shell body 1. A rubber ring is provided in the slide groove at the upper part of the shell body 1, and the push rod 10 contacts the rubber ring. The sliding plate 7 is connected with symmetrically distributed latch rods 9, and the upper end of the latch rod 9 is inserted into the card block 3. The upper inner part of the shell body 1 is connected with a symmetrically distributed second guide rod 11, and the sliding plate 7 is slidably connected to the second guide rod 11, and the second spring 12 is sleeved on the second guide rod 11. An oblique ring 13 for positioning is connected to the upper part of the shell body 1. The bottom surface diameter of the drill body 2 is consistent with the diameter of the circular surface encircled by the lowest part of the oblique ring 13. By pulling the push rod 10 downward, the sliding plate 7 drives the connecting rod 8 to move downward, and the connecting rod 8 drives the card block 6 to move downward and disengage from the card block 3.

[0022] First, the staff installs the housing 1 on the processing machine, and then operates the processing machine to drive the drill bit body 2 to rotate by the housing 1 to process the PCB board. When the drill bit body 2 breaks, the staff immediately shuts down the processing machine to stop the rotation of the housing 1 and the drill bit body 2. Subsequently, the push rod 10 is moved downward, and the second spring 12 is compressed accordingly. The push rod 10 drives the sliding plate 7 to move downward, the sliding plate 7 drives the connecting rod 8 to move downward, and further the connecting rod 8 drives the clamping block 6 to move downward to disengage from the clamping block 3. The first spring 5 is compressed accordingly. The sliding plate 7 also drives the pin rod 9 to move downward to disengage from the clamping block 3. Then the staff rotates the drill bit body 2, and the drill bit body 2 drives the clamping block 3 to rotate. When the clamping block 3 rotates to an appropriate angle and aligns with the one-word groove of the housing 1, the staff stops rotating the drill bit body 2, and then moves the drill bit body 2 upward to disconnect the clamping block 3 from the housing 1. Then a new drill bit body 2 is placed above the housing 1 to align the clamping block 3 with the one-word groove of the housing 1. After alignment, the drill bit body 2 is directly moved downward to make the clamping block 3 enter the housing 1, and then the drill bit body 2 is rotated to drive the clamping block 3 to rotate, so that the clamping block 3 is snapped into the housing 1. Then the staff releases the push rod 10, and the second spring 12 and the first spring 5 gradually return to their original states. Further, the push rod 10, the sliding plate 7, the connecting rod 8, and the clamping block 6 move upward, and the clamping block 6 contacts the clamping block 3, thereby fixing the clamping block 3 in the housing 1 to prevent the drill bit body 2 from driving the clamping block 3 to rotate and disengage from the housing 1, so as to achieve the purpose of replacing the drill bit body 2, reduce the cost of drill needles. The sliding plate 7 also drives the pin rod 9 to move upward and insert into the clamping block 3, thereby strengthening the clamping block 3 in the housing 1.

[0023] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A PCB drill bit with a replaceable drill tip, characterized in that, It includes a housing (1), a drill bit body (2), a clamping block (3), a first guide rod (4), a clamping block (6), a first spring (5), a sliding plate (7), a second spring (12), a connecting rod (8) and a push rod (10). The lower part of the drill bit body (2) is connected with a clamping block (3), the clamping block (3) is clamped with the housing (1), the upper part of the housing (1) is provided with a slot for the clamping block (3) to enter, several first guide rods (4) are connected to the upper part inside the housing (1), a clamping block (6) is slidably connected between two adjacent first guide rods (4), a first spring (5) for assisting in resetting is sleeved on the first guide rod (4), and both ends of the first spring (5) are respectively connected with the clamping block (6) and the housing (1). A sliding plate (7) is slidably connected to the upper part inside the housing (1), a second spring (12) for assisting in resetting is connected between the sliding plate (7) and the housing (1), the sliding plate (7) is connected with connecting rods (8) distributed left and right, the upper ends of the connecting rods (8) are connected to the bottom of the clamping block (6), a push rod (10) is slidably connected to the upper part inside the housing (1), the rear end of the push rod (10) is connected to the front part of the sliding plate (7), and the front end of the push rod (10) protrudes out of the housing (1).

2. The PCB drill bit with replaceable drill bit according to claim 1, characterized in that, A rubber ring is arranged in the chute on the upper part of the housing (1), and the push rod (10) contacts the rubber ring.

3. The PCB drill bit with a replaceable drill head according to claim 2, wherein It further includes a pin rod (9), symmetrically distributed pin rods (9) are connected to the sliding plate (7), and the upper ends of the pin rods (9) are inserted into the inside of the clamping block (3).

4. The PCB drill bit with replaceable drill bit according to claim 3, characterized in that, It further includes a second guide rod (11), symmetrically distributed second guide rods (11) are connected to the upper part inside the housing (1), the sliding plate (7) is slidably connected to the second guide rods (11), and the second spring (12) is sleeved on the second guide rods (11).

5. The PCB drill bit with replaceable drill bit according to claim 4, characterized in that, It further includes an inclined ring (13), and an inclined ring (13) for positioning is connected to the upper part of the housing (1).

6. The PCB drill bit with replaceable drill bit according to claim 5, characterized in that, The bottom surface diameter of the drill bit body (2) is the same as the diameter of the circular surface enclosed by the lowermost part of the inclined ring (13).

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