Butt joint type PCB machining milling cutter

Abstract

The utility model relates to the technical field of PCB (printed circuit board) processing, in particular to a butt joint type milling cutter for PCB processing. The butt joint type PCB machining milling cutter comprises a cutter handle, a rubber sleeve, a cutter body, locking pieces and a reset spring, the rubber sleeve is connected into the cutter handle, the cutter body is connected into the rubber sleeve in a sliding mode, the locking pieces which are symmetrically distributed are connected to the lower portion in the cutter handle in a sliding mode, the locking pieces are tightly attached to the surface of the rubber sleeve, and the reset spring is connected with the cutter body in a sliding mode. A reset spring used for assisting reset is connected between the locking piece and the cutter handle and is in a stretching state. The rubber sleeve is arranged, the locking bolt, the arc-shaped block, the extrusion block and the reset spring are matched, then the locking piece moves inwards to be separated from the rubber sleeve, the cutter body is gradually pulled downwards to be pulled out of the cutter handle, the effect of extending the cutter body is achieved, the whole cutter body does not need to be directly replaced, and therefore the cost of the cutter body is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB processing, in particular to a butt - type PCB processing milling cutter. Background Art

[0002] A PCB board is made by electronic printing technology. A printed circuit board is a substrate for assembling electronic components. It is a printed board that forms inter - point connections and printed components on a general substrate. Printed circuit boards have been extremely widely used in the production and manufacturing of electronic products. Its functions are to miniaturize and lighten the system, and to transmit signals at high speed, etc. During the process of processing a PCB board, a circuit board engraving machine is needed to engrave circuit patterns on the raw board, and a milling cutter is an important component on the circuit board engraving machine, which directly affects the engraving effect of the PCB board.

[0003] A patent with the patent authorization announcement number CN218396122U discloses a milling cutter, which includes a tool shank and a cutting part. The material of the tool shank is steel, and the tool shank includes a body part. The clamping sleeve of the milling machine equipment is sleeved on the body part. Although the above - mentioned patent can reduce the cost of the milling cutter by setting a steel tool shank and a hard alloy cutting part, since the clamping part is arranged at the upper inner position of the tool shank, when the cutting part breaks, the length of the cutting part is limited. When the clamping part continues to clamp the cutting part, the lower part of the cutting part cannot extend out of the tool shank, resulting in the need to replace the entire cutting part, thus increasing the cost of the cutting part.

[0004] Therefore, there is a particular need for a butt - type PCB processing milling cutter to solve the problems existing in the prior art. Summary of the Utility Model

[0005] In order to overcome the drawback that the length of the cutting part of the existing patent is limited, when the clamping part continues to clamp the cutting part, the lower part of the cutting part cannot extend out of the tool shank, resulting in the need to replace the entire cutting part, thus increasing the cost of the cutting part, the utility model provides a butt - type PCB processing milling cutter.

[0006] The utility model is realized by the following technical means: a docking type PCB processing milling cutter, comprising a tool handle, a rubber sleeve, a tool body, a locking piece, a reset spring, a locking bolt, an arc block and an extrusion block, wherein the tool handle is internally connected with a rubber sleeve, the rubber sleeve is internally slidably connected with the tool body, the lower part of the tool handle is slidably connected with a symmetrically distributed locking piece, the locking piece is closely attached to the surface of the rubber sleeve, a reset spring for auxiliary reset is connected between the locking piece and the tool handle, the reset spring is in a stretched state, a locking bolt is threadedly connected with a locking bolt at the lower part of the tool handle, an arc block is threadedly connected with the locking bolt, an extrusion block is connected with the arc block, the extrusion block is clamped with the locking piece, the arc block is moved forward and backward by the locking bolt, the extrusion block is moved forward and backward and is disengaged and clamped with the locking piece, the locking piece is assisted by the reset spring to move inside and outside, and the locking piece releases and clamps the rubber sleeve and the tool body.

[0007] As an improvement of the above solution, the top surface of the rubber sleeve is horizontally aligned with the top surface of the knife body, and the bottom surface of the rubber sleeve is horizontally aligned with the bottom surface of the knife handle.

[0008] As an improvement of the above solution, a threaded plate is provided on the outer wall of the cutter body, the threaded plate is tightly attached to the inner wall of the rubber sleeve, and the locking piece is clamped into the threaded plate through the rubber sleeve.

[0009] As an improvement of the above scheme, it also includes a square rod, an inclined surface and a damping block. The square rod is connected to the top of the knife handle. The knife body is slidably connected to the square rod. The knife body is provided with a plurality of inclined surfaces, and the plurality of inclined surfaces are connected to the upper part of the knife body. The square rod is connected to a damping block for increasing resistance. The knife body contacts the damping block, and contacts the knife handle through the square rod and the damping block to increase its movement resistance.

[0010] As an improvement of the above solution, the square rod is made of damping material.

[0011] As an improvement on the above scheme, it also includes a diverter bin, an air inlet interface and an exhaust pipe. The lower part of the knife handle is rotatably connected to the diverter bin, the front part of the diverter bin is connected to the air inlet interface, and the bottom of the diverter bin is connected to a number of evenly distributed exhaust pipes. The lower end of the exhaust pipe is bent outward, and the gas is transported to the inside of the diverter bin through the air inlet interface, and the gas is ejected through the exhaust pipe.

[0012] As an improvement of the above solution, a leak-proof ring is provided on the air inlet interface to prevent air leakage.

[0013] 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 setting the rubber sleeve, the locking bolt, the arc-shaped block, the extrusion block and the return spring cooperate, so that the locking member moves inward to disengage from the rubber sleeve, and then gradually pulls the tool body downward to pull it out to the outside of the tool handle, thereby realizing the effect of extending the tool body, without directly replacing the entire tool body, thus saving the cost of the tool body.

[0014] 2. By setting the inclined plane, the upper part of the tool body can be accurately aligned with the lower part of the square rod.

[0015] 3. By setting the shunt chamber, the air inlet interface and the exhaust pipe, the gas is input into the shunt chamber through the air inlet interface, and then ejected through the exhaust pipe to generate an air flow to blow away the debris on the PCB board, avoiding the accumulation of debris on the PCB board and affecting the engraving of the tool body. Description of the Drawings

[0016] Figure 1 It is a three-dimensional structure schematic diagram of the present utility model.

[0017] Figure 2 It is the first partial sectional view of the present utility model.

[0018] Figure 3 It is the second partial sectional view of the present utility model.

[0019] Figure 4 It is a three-dimensional sectional structure schematic diagram of components such as the rubber sleeve, the locking member and the extrusion block of the present utility model.

[0020] Figure 5 It is a three-dimensional sectional structure schematic diagram of the arc-shaped block, the locking bolt and the return spring of the present utility model.

[0021] Figure 6 It is a three-dimensional sectional structure schematic diagram of the tool handle, the tool body and the square rod of the present utility model.

[0022] Figure 7 It is a three-dimensional sectional structure schematic diagram of components such as the square rod, the inclined plane and the damping block of the present utility model.

[0023] Figure 8 It is a three-dimensional structure schematic diagram of the shunt chamber, the air inlet interface and the exhaust pipe of the present utility model.

[0024] Names of the reference numerals in the figure: 1. Tool handle, 2. Tool body, 3. Rubber sleeve, 4. Locking member, 5. Extrusion block, 6. Arc-shaped block, 7. Locking bolt, 8. Return spring, 9. Square rod, 10. Inclined plane, 11. Damping block, 12. Shunt chamber, 13. Air inlet interface, 14. Exhaust pipe. Detailed Implementation Modes

[0025] 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.

[0026] Embodiment: A docking type PCB processing milling cutter, see Figures 1 - 7 As shown, it includes a knife handle 1, a rubber sleeve 3, a knife body 2, a locking piece 4, a reset spring 8, a locking bolt 7, an arc block 6 and an extrusion block 5. The rubber sleeve 3 is connected to the inside of the knife handle 1, and the knife body 2 is slidably connected to the inside of the rubber sleeve 3. The top surface of the rubber sleeve 3 is horizontally aligned with the top surface of the knife body 2, and the bottom surface of the rubber sleeve 3 is horizontally aligned with the bottom surface of the knife handle 1. The outer wall of the knife body 2 is provided with a threaded plate, and the threaded plate is tightly attached to the inner wall of the rubber sleeve 3, and the locking piece 4 is inserted into the threaded plate through the rubber sleeve 3. The lower part of the knife handle 1 is slidably connected with symmetrically distributed locking pieces 4, and the locking pieces 4 are tightly attached to the rubber sleeve 3. On the surface of the rubber sleeve 3, a reset spring 8 for assisting reset is connected between the locking piece 4 and the knife handle 1, and the reset spring 8 is in a stretched state. A locking bolt 7 is threadedly connected to the lower part of the knife handle 1, and an arc block 6 is threadedly connected to the locking bolt 7. An extrusion block 5 is connected to the arc block 6, and the extrusion block 5 is clamped with the locking piece 4. The arc block 6 is moved forward and backward by the locking bolt 7, so that the extrusion block 5 moves forward and backward and is disengaged and clamped with the locking piece 4, and the locking piece 4 is moved inward and outward with the assistance of the reset spring 8, and the locking piece 4 loosens and clamps the rubber sleeve 3 and the knife body 2.

[0027] See also Figure 6 and Figure 7 As shown, it also includes a square rod 9, an inclined surface 10 and a damping block 11. The square rod 9 is connected to the top of the handle 1, and the knife body 2 is slidably connected to the square rod 9. The square rod 9 is made of damping material. A plurality of inclined surfaces 10 are arranged on the knife body 2, and the plurality of inclined surfaces 10 are connected to the upper part of the knife body 2. The square rod 9 is connected to a damping block 11 for increasing resistance. The knife body 2 contacts with the damping block 11, and contacts with the handle 1 through the square rod 9 and the damping block 11 to increase its movement resistance.

[0028] See also Figure 1 and Figure 8 As shown, it also includes a diversion chamber 12, an air inlet interface 13 and an exhaust pipe 14. The lower part of the knife handle 1 is rotatably connected to the diversion chamber 12, and the front part of the diversion chamber 12 is connected to the air inlet interface 13. The air inlet interface 13 is provided with a leak-proof ring for preventing air leakage. The bottom of the diversion chamber 12 is connected to a number of evenly distributed exhaust pipes 14. The lower end of the exhaust pipe 14 is bent outward, and the gas is transported to the inside of the diversion chamber 12 through the air inlet interface 13, so that the gas is ejected through the exhaust pipe 14.

[0029] First, the staff connects the tool handle 1 to the driving mechanism of the engraving machine. Subsequently, the air supply pipe is connected to the air inlet interface 13, and then the gas is input into the shunt chamber 12 through the air inlet interface 13. The gas in the shunt chamber 12 is ejected through the exhaust pipe 14 to generate an air flow. Then, the PCB board is placed on the workbench of the engraving machine. Next, the staff operates the engraving machine to make the driving mechanism run. The driving mechanism drives the tool handle 1 to rotate, and the tool handle 1 drives the rubber sleeve 3 and the tool body 2 to rotate, thereby engraving the surface of the PCB board. During the engraving process, debris will be generated on the PCB board. The exhaust pipe 14 continuously ejects gas, thereby blowing away the debris on the PCB board to prevent the debris from accumulating on the PCB board and affecting the engraving of the tool body 2. When the tool body 2 breaks, the staff immediately operates the engraving machine to emergently brake the driving mechanism, thereby stopping the rotation of the tool handle 1, the rubber sleeve 3, and the tool body 2. Then, rotate the locking bolt 7 forward. The locking bolt 7 drives the arc-shaped block 6 to move forward. The arc-shaped block 6 drives the extrusion block 5 to move forward and gradually disengages from the locking member 4. The return spring 8 returns to its original state, thereby causing the locking member 4 to move inward and disengage from the rubber sleeve 3. Then, gradually pull the tool body 2 downward to pull the tool body 2 out of the tool handle 1 to achieve the effect of extending the tool body 2, without directly replacing the entire tool body 2, thereby saving the cost of the tool body 2. When moving the tool body 2 downward, the tool body 2 makes sliding contact with the square rod 9 and the damping block 11. The square rod 9 and the damping block 11 play a role in increasing the resistance to prevent the tool body 2 from directly moving downward and falling out. When the tool body 2 moves downward to an appropriate position, the staff stops moving the tool body 2. Then, rotate the locking bolt 7 backward. The locking bolt 7 drives the arc-shaped block 6 to move backward. The arc-shaped block 6 drives the extrusion block 5 to move backward and gradually engages with the locking member 4. When engaging, the extrusion block 5 gradually pushes the locking member 4 to move outward and clamp the rubber sleeve 3, and the return spring 8 is stretched accordingly, thereby fixing the tool body 2 in the tool handle 1. Then, operate the engraving machine to continue the engraving operation on the PCB board.

[0030] The above embodiments are only the preferred embodiments of the present invention and are not used to limit the scope of implementation of the present invention. Therefore, all equivalent changes made based on the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A docking type PCB processing milling cutter, characterized in that: The utility model comprises a knife handle (1), a rubber sleeve (3), a knife body (2), a locking piece (4), a reset spring (8), a locking bolt (7), an arc block (6) and an extrusion block (5), wherein the rubber sleeve (3) is connected inside the knife handle (1), the knife body (2) is slidably connected inside the rubber sleeve (3), the lower part of the knife handle (1) is slidably connected with a symmetrically distributed locking piece (4), the locking piece (4) is closely attached to the surface of the rubber sleeve (3), a reset spring (8) for assisting reset is connected between the locking piece (4) and the knife handle (1), the reset spring (8) is in a stretched state, the lower part of the knife handle (1) is threadedly connected with a locking bolt (7), the locking bolt (7) is threadedly connected with an arc block (6), the arc block (6) is connected with an extrusion block (5), and the extrusion block (5) is clamped with the locking piece (4).

2. A docking type PCB processing milling cutter according to claim 1, characterized in that: The top surface of the rubber sleeve (3) is horizontally aligned with the top surface of the knife body (2), and the bottom surface of the rubber sleeve (3) is horizontally aligned with the bottom surface of the knife handle (1).

3. A docking type PCB processing milling cutter according to claim 2, characterized in that: The outer wall of the blade body (2) is provided with a threaded plate, the threaded plate is tightly attached to the inner wall of the rubber sleeve (3), and the locking piece (4) is clamped into the threaded plate through the rubber sleeve (3).

4. The butt-jointed PCB processing milling cutter according to claim 3, characterized in that: The knife handle (1) further comprises a square rod (9), an inclined surface (10) and a damping block (11); the square rod (9) is connected to the top of the knife handle (1); the knife body (2) is slidably connected to the square rod (9); a plurality of inclined surfaces (10) are arranged on the knife body (2); the plurality of inclined surfaces (10) are connected to the upper part of the knife body (2); a damping block (11) for increasing resistance is connected to the square rod (9); the knife body (2) is in contact with the damping block (11).

5. The butt-jointed PCB processing milling cutter according to claim 4, characterized in that: The square rod (9) is made of damping material.

6. The butt-jointed PCB processing milling cutter according to claim 5, characterized in that: It also includes a diversion chamber (12), an air intake interface (13) and an exhaust pipe (14); the lower part of the knife handle (1) is rotatably connected to the diversion chamber (12); the front part of the diversion chamber (12) is connected to the air intake interface (13); the bottom of the diversion chamber (12) is connected to a plurality of evenly distributed exhaust pipes (14); the lower ends of the exhaust pipes (14) are bent outwards.

7. The butt-jointed PCB processing milling cutter according to claim 6, characterized in that: The air inlet interface (13) is provided with a leak-proof ring for preventing air leakage.

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