Self-cleaning air spindle for PCB drilling machine

Abstract

The invention relates to the technical field of air spindles, and discloses a self-cleaning air spindle for a PCB (printed circuit board) drilling machine, which comprises an air spindle body, a drill rod is mounted on one side of the air spindle body, a mounting frame is fixedly connected to the outer side of the air spindle body, and a self-cleaning mechanism is arranged on the mounting frame. The self-cleaning mechanism comprises two swing plates. Through the design of the self-cleaning mechanism, when a drill rod of air spindle equipment needs to be cleaned, two swing plates can be controlled to swing, and after an annular plate is promoted to move to the position where the drill rod of an air spindle can be inserted, the annular plate is moved by controlling a first electric push rod to retract; according to the self-cleaning air spindle, the drill rod of the air spindle can be inserted between the bristles, the drill rod is further controlled to rotate, rapid friction between the bristles and the drill rod can be achieved, the cleaning purpose is achieved, self-cleaning is conducted in this way, and compared with manual disassembly and cleaning, the self-cleaning air spindle is more convenient and efficient.

Description

Technical Field

[0001] The present invention relates to the technical field of air spindles, and more particularly to a self-cleaning air spindle for a PCB drilling machine. Background Art

[0002] The spindle of a PCB drilling machine is one of the key components in the PCB manufacturing process. It is mainly used to drive the drill bit to perform precise drilling on the PCB board. By rotating at high speed, it ensures that the drill bit can quickly and stably complete the drilling task of fine apertures, meeting the high-precision and high-efficiency requirements in PCB processing.

[0003] Patent Publication No. CN211331342U discloses a special electric spindle for the PCB electric spindle industry, including a housing. Fixed disks are fixedly connected to both the upper and lower sides of the housing, and a first bearing and a second bearing are respectively embedded in the two fixed disks. A spindle is arranged in the middle of the inner cavity of the housing, and the front and rear ends of the spindle respectively penetrate through the opposite sides of the two fixed disks and are fixedly connected to the inner rings of the first bearing and the second bearing. A rotor is sleeved on the middle section of the spindle, and the rotor is movably connected to the stator. By setting a cooling mechanism, it can effectively make the air in the housing reach a flowing state through the annular net, cool the air flow effectively, and make the air flow temperature take away a large amount of working temperature in the housing while being reduced, so that the sustainable working time of the spindle is greatly improved, and further, the situation of damage due to high temperature is avoided while ensuring its working efficiency.

[0004] PCB boards are a type of very compact component, so high precision is required during the drilling process. When using the spindle to drill it, if there are impurities such as oil stains on the drill rod of the spindle, the impurities may cause pollution to the PCB board. Especially some sharp impurities are more likely to cause damage to the PCB board or errors in drilling during the drilling process. The above device is similar to the existing spindle structure and lacks the function of self-cleaning the drilling end of the spindle. The traditional cleaning method is generally manual cleaning by hand or cleaning it with additional cleaning equipment after removing the spindle, which is rather cumbersome and will also delay the normal operation of the spindle. Therefore, a self-cleaning air spindle for a PCB drilling machine is proposed here. Summary of the Invention

[0005] In order to solve the above-mentioned problems, the present invention provides a self-cleaning air spindle for a PCB drilling machine.

[0006] The self-cleaning air spindle for a PCB drilling machine provided by the present invention adopts the following technical solutions: A self-cleaning air spindle for a PCB drilling machine includes an air spindle body. A drill rod is installed on one side of the air spindle body, and a mounting frame is fixedly connected to the outside of the air spindle body. A self-cleaning mechanism is arranged on the mounting frame; The self-cleaning mechanism includes two swing plates, which are respectively arranged on the front and rear sides of the installation frame. A rotating rod is fixedly connected to the swing plate. The rotating rod extends into the installation frame and is rotatably connected to the installation frame. A first extension plate is slidably connected inside one of the swing plates, and a second extension plate is slidably connected inside the other swing plate. The first extension plate and the second extension plate respectively extend outside the two swing plates. An annular plate is arranged between the first extension plate and the second extension plate. Two connecting rods are fixedly connected to the outer side of the annular plate. The two connecting rods are respectively rotatably connected to the first extension plate and the second extension plate. A brush is fixedly connected to the inner side of the annular plate. First electric push rods are fixedly connected to the inner sides of the two swing plates. One end of each of the two first electric push rods is fixedly connected to the inner sides of the first extension plate and the second extension plate respectively.

[0007] By adopting the above technical solution, when it is necessary to clean the drill rod of the air spindle device, the two swing plates can be controlled to swing. After the annular plate is moved to a position where the drill rod of the air spindle can be inserted, the annular plate is moved by controlling the first electric push rod to contract, so that the drill rod of the air spindle can be inserted between the brushes. Further controlling the rotation of the drill rod can achieve rapid friction between the brushes and the drill rod, so as to achieve the cleaning purpose. By self-cleaning in this way, it is more convenient and efficient compared with manual disassembly and cleaning.

[0008] Preferably, a first round rod is rotatably connected inside the installation frame, a first motor is fixedly connected to the outside of the installation frame, the first motor is fixedly connected to one end of the first round rod through an output shaft, two first belt pulleys are fixedly connected to the outside of the first round rod, and second belt pulleys are fixedly connected to the outside of the two rotating rods. The two first belt pulleys are respectively connected by belts to the two second belt pulleys.

[0009] By adopting the above technical solution, the first motor drives the first round rod to rotate after working.

[0010] Preferably, a gear is fixedly connected to the outside of one of the connecting rods. The gear is arranged inside the first extension plate. A guide plate is fixedly connected inside the first extension plate. A movable plate is slidably connected to the outside of the guide plate. A second electric push rod is fixedly connected inside the first extension plate. One end of the second electric push rod is fixedly connected to the movable plate.

[0011] By adopting the above technical solution, the second electric push rod pushes and pulls the movable plate after working.

[0012] Preferably, a rack is fixedly connected to the movable plate. The rack is arranged at the bottom of the gear. The rack meshes with the gear.

[0013] By adopting the above technical solution, the rack drives the gear to rotate after moving.

[0014] Preferably, the self-cleaning mechanism includes a cleaning component. The cleaning component includes a support plate fixedly connected to the outside of the annular plate. A moving block is slidably connected to one side wall of the support plate. A circular plate is rotatably connected to the moving block. An auxiliary plate is arranged on one side of the circular plate. A scraper is integrally formed on the auxiliary plate. The scraper penetrates through the circular plate. A frame body is arranged at the bottom of the air spindle body. A support plate is fixedly connected to the outside of the frame body. One end of the support plate is fixedly connected to the outside of the air spindle body. A second round bar is rotatably connected inside the frame body. The second round bar extends out of the frame body. A square rod is integrally formed at one end of the second round bar. A rectangular groove is formed on one side of the auxiliary plate, and the rectangular groove matches the square rod.

[0015] By adopting the above technical solution, when the square rod is inserted into the rectangular groove, the second round bar can drive the auxiliary plate to rotate after rotating.

[0016] Preferably, a control plate is slidably connected to the top wall of the support plate. One side of the control plate is movably connected to a push-pull rod through a movable hinge seat. One end of the push-pull rod is movably connected to the top of the moving block through a movable hinge seat. A third electric push rod is fixedly connected to the inside of the support plate. One end of the third electric push rod is fixedly connected to the control plate.

[0017] By adopting the above technical solution, the third electric push rod can push and pull the control plate after working.

[0018] Preferably, a spring is fixedly connected to the circular plate. One end of the spring is fixedly connected to the auxiliary plate.

[0019] By adopting the above technical solution, the spring provides an elastic force to the auxiliary plate.

[0020] Preferably, protective nets are fixedly connected to both the top and bottom walls of the frame body. A fan blade is fixedly connected to the outside of the second round bar. A fixing plate is fixedly connected to the inside of the frame body. A second motor is fixedly connected to the inside of the fixing plate. An auxiliary rod is fixedly connected to the output shaft of the second motor. A first bevel gear is fixedly connected to one end of the auxiliary rod. A second bevel gear is fixedly connected to the outside of the second round bar. The second bevel gear is arranged at the bottom of the first bevel gear and meshes with the first bevel gear.

[0021] By adopting the above technical solution, after the second motor works, the first bevel gear rotates and drives the second bevel gear to rotate.

[0022] Preferably, a cooling groove is formed inside the outer side wall of the air spindle body. A circulation component is arranged outside the air spindle body. The circulation component includes a cooling frame, and the cooling frame is fixedly connected to the outside of the air spindle body. Two socket connectors are fixedly connected to the outside of the air spindle body respectively, and both socket connectors are communicated with the cooling groove. A frame plate is fixedly connected to one side of the cooling frame, and a water pump is fixedly connected to the inner side of the frame plate. The input end of the water pump is fixedly connected with a first pipeline, and the first pipeline is fixedly connected to one side wall of the frame body. The output end of the water pump is fixedly connected with a second pipeline. A limiting plate is fixedly connected to the outside of the air spindle body, and the second pipeline penetrates through the limiting plate. A third pipeline is fixedly connected to the other side wall of the frame body. One ends of the second pipeline and the third pipeline are both fixedly connected with plug connectors, and the two plug connectors respectively extend into the two socket connectors, and the plug connectors are in fit with the inner sides of the socket connectors.

[0023] By adopting the above technical solution, after the plug connector is inserted into the socket connector, the friction force between the two can promote the tight connection between the two.

[0024] Preferably, heat conducting plates are fixedly connected inside the cooling frame, and the heat conducting plates are arranged at equal intervals on the cooling frame. The heat conducting plates extend out of the cooling frame, and heat dissipation openings are formed on the heat conducting plates.

[0025] By adopting the above technical solution, the heat conducting plates can absorb the heat of the coolant in the cooling frame.

[0026] In summary, the present invention includes the following beneficial technical effects: An air spindle for a PCB drilling machine that can be self-cleaned. Through the design of the self-cleaning mechanism, when it is necessary to clean the drill rod of the air spindle device, two swing plates can be controlled to swing. After the annular plate moves to a position where the drill rod of the air spindle can be inserted, by controlling the contraction of the first electric push rod, the annular plate is moved, so that the drill rod of the air spindle can be inserted between the bristles, and further controlling the rotation of the drill rod can achieve the rapid friction between the bristles and the drill rod, so as to achieve the cleaning purpose. By self-cleaning in this way, it is more convenient and efficient compared with manual disassembly and cleaning.

[0027] An air spindle for a PCB drilling machine that can be self-cleaned. Through the design of the impurity removal component, after controlling the annular plate to move to directly below the air spindle body, the square rod is controlled to insert into the rectangular groove, and further the scraper is promoted to insert into the bristles, so as to achieve the purpose of controlling the rotation of the scraper to knock off the impurities on the bristles. Moreover, the rotation of the fan blades can also accelerate the falling speed of the impurities, thereby improving the cleaning quality of the bristles and facilitating the rapid development of the next cleaning work of the bristles on the drill rod.

[0028] A self-cleaning air spindle for a PCB drilling machine, through the design of the impurity removal component, a large amount of heat is generated when the air spindle body works. After the water pump works, the coolant in the cooling frame is extracted and enters the cooling tank through the second pipeline, and the coolant flowing in the cooling tank will be re-inhaled into the cooling frame through the third pipeline to carry out circulating cooling. At this time, the fan blade starts to output air flow towards the heat conduction plate to perform air cooling on the heat conduction plate, so as to effectively improve the cooling speed and have higher cooling efficiency. Description of the Drawings

[0029] Figure 1 Schematic diagram of the structure of the present invention; Figure 2 Cross-sectional view of the mounting frame in the present invention; Figure 3 Schematic diagram of the structure of the support plate in the present invention; Figure 4 Cross-sectional view of the first extension plate in the present invention; Figure 5 Cross-sectional view of the structure of the air spindle body in the present invention; Figure 6 is Figure 5 Enlarged view of part A in Figure 7 is Figure 5 Enlarged view of part B in Figure 8 Schematic diagram of the frame body adjusted directly below in the present invention; Figure 9 is Figure 8 Enlarged view of part C in

[0030] Description of the reference numerals: 1. Air spindle body; 2. Drill rod; 3. Mounting frame; 4. Self-cleaning mechanism; 41. Swing plate; 42. Rotating rod; 43. First extension plate; 44. Second extension plate; 45. Ring plate; 46. Connecting rod; 47. Brush hair; 48. First electric push rod; 49. First round rod; 491. First motor; 492. First belt pulley; 493. Second belt pulley; 494. Gear; 495. Guide plate; 496. Movable plate; 497. Second electric push rod; 498. Rack; 5. Impurity removal component; 51. Support plate; 52. Moving block; 53. Circular plate; 54. Auxiliary plate; 55. Scraper; 56. Frame body; 57. Support plate; 58. Second round rod; 59. Square rod; 591. Control plate; 592. Push-pull rod; 593. Third electric push rod; 594. Spring; 595. Protective net; 596. Second motor; 597. First bevel gear; 598. Second bevel gear; 6. Cooling tank; 7. Circulation component; 71. Cooling frame; 72. Plug socket; 73. Frame plate; 74. Water pump; 75. Second pipeline; 76. Third pipeline; 77. Plug joint; 78. Heat conduction plate. Specific Embodiments

[0031] The following further elaborates on the present invention in conjunction with the appended Figure 1 - appended Figure 9 drawings.

[0032] The present invention discloses a self - cleaning air spindle for a PCB drilling machine. Referring to Figures 1 - 9 , it includes an air spindle body 1. A drill rod 2 is installed on one side of the air spindle body 1. An installation frame 3 is fixedly connected to the outside of the air spindle body 1. A self - cleaning mechanism 4 is arranged on the installation frame 3; The self - cleaning mechanism 4 includes two swing plates 41. The two swing plates 41 are respectively arranged on the front and rear sides of the installation frame 3. A rotating rod 42 is fixedly connected to the swing plate 41. The rotating rod 42 extends into the interior of the installation frame 3 and is rotatably connected to the installation frame 3. A first extension plate 43 is slidably connected to the interior of one of the swing plates 41, and a second extension plate 44 is slidably connected to the interior of the other swing plate 41. The first extension plate 43 and the second extension plate 44 respectively extend outside the two swing plates 41. An annular plate 45 is arranged between the first extension plate 43 and the second extension plate 44. Two connecting rods 46 are fixedly connected to the outside of the annular plate 45. The two connecting rods 46 are respectively rotatably connected to the first extension plate 43 and the second extension plate 44. A brush 47 is fixedly connected to the inner side of the annular plate 45; Both inner sides of the two swing plates 41 are fixedly connected with first electric push rods 48. One ends of the two first electric push rods 48 are respectively fixedly connected to the inner sides of the first extension plate 43 and the second extension plate 44. When it is necessary to clean the drill rod 2 of the air spindle device, the two swing plates 41 can be controlled to swing. After the annular plate 45 is moved to a position where the drill rod 2 of the air spindle can be inserted, by controlling the first electric push rods 48 to contract, the movement of the annular plate 45 is realized, so that the drill rod 2 of the air spindle can be inserted between the brushes 47, and further controlling the rotation of the drill rod 2 can achieve the rapid friction between the brushes 47 and the drill rod 2, thereby achieving the cleaning purpose. By self - cleaning in this way, it is more convenient and efficient compared to manual disassembly and cleaning.

[0033] Inside the mounting frame 3, a first round rod 49 is rotatably connected. On the outside of the mounting frame 3, a first motor 491 is fixedly connected. The first motor 491 is fixedly connected to one end of the first round rod 49 through an output shaft. Two first belt pulleys 492 are fixedly connected to the outside of the first round rod 49. Second belt pulleys 493 are fixedly connected to the outside of the two rotating rods 42. The two first belt pulleys 492 and the two second belt pulleys 493 are connected by belts respectively. After the first motor 491 works, it drives the first round rod 49 to rotate. A gear 494 is fixedly connected to the outside of one of the connecting rods 46. The gear 494 is arranged inside the first extension plate 43. A guide plate 495 is fixedly connected inside the first extension plate 43. A movable plate 496 is slidably connected to the outside of the guide plate 495. A second electric push rod 497 is fixedly connected inside the first extension plate 43. One end of the second electric push rod 497 is fixedly connected to the movable plate 496. After the second electric push rod 497 works, it pushes and pulls the movable plate 496. A rack 498 is fixedly connected to the movable plate 496. The rack 498 is arranged at the bottom of the gear 494. The rack 498 meshes with the gear 494. After the rack 498 moves, it drives the gear 494 to rotate.

[0034] The self-cleaning mechanism 4 includes a debris removal component 5. The debris removal component 5 includes a support plate 51. The support plate 51 is fixedly connected to the outside of the annular plate 45. A moving block 52 is slidably connected to one side wall of the support plate 51. A round plate 53 is rotatably connected to the moving block 52. An auxiliary plate 54 is arranged on one side of the round plate 53. A scraping plate 55 is integrally formed on the auxiliary plate 54. The scraping plate 55 penetrates through the round plate 53. A frame body 56 is arranged at the bottom of the air spindle body 1. A support plate 57 is fixedly connected to the outside of the frame body 56. One end of the support plate 57 is fixedly connected to the outside of the air spindle body 1. A second round rod 58 is rotatably connected inside the frame body 56. The second round rod 58 extends outside the frame body 56. A square rod 59 is integrally formed at one end of the second round rod 58. A rectangular groove is formed on one side of the auxiliary plate 54. The rectangular groove matches the square rod 59. When the square rod 59 is inserted into the rectangular groove, the second round rod 58 can drive the auxiliary plate 54 to rotate after rotation; A control plate 591 is slidably connected to the top wall of the support plate 51. One side of the control plate 591 is movably connected to a push-pull rod 592 through a movable hinge seat. One end of the push-pull rod 592 is movably connected to the top of the moving block 52 through a movable hinge seat. A third electric push rod 593 is fixedly connected to the inside of the support plate 51. One end of the third electric push rod 593 is fixedly connected to the control plate 591. After the third electric push rod 593 works, it can push and pull the control plate 591. A spring 594 is fixedly connected to the round plate 53. One end of the spring 594 is fixedly connected to the auxiliary plate 54. The spring 594 provides an elastic force to the auxiliary plate 54; On the top and bottom walls of the frame body 56, protective nets 595 are fixedly connected. On the outside of the second round rod 58, fan blades are fixedly connected. Inside the frame body 56, a fixed plate is fixedly connected. Inside the fixed plate, a second motor 596 is fixedly connected. The second motor 596 is fixedly connected with an auxiliary rod through an output shaft. One end of the auxiliary rod is fixedly connected with a first bevel gear 597. On the outside of the second round rod 58, a second bevel gear 598 is fixedly connected. The second bevel gear 598 is arranged at the bottom of the first bevel gear 597 and meshes with the first bevel gear 597. After the second motor 596 operates, the first bevel gear 597 rotates and drives the second bevel gear 598 to rotate.

[0035] Inside the outer wall of the air spindle body 1, a cooling groove 6 is formed. Outside the air spindle body 1, a circulation assembly 7 is arranged. The circulation assembly 7 includes a cooling frame 71. The cooling frame 71 is fixedly connected to the outside of the air spindle body 1. On the outside of the air spindle body 1, two socket connectors 72 are fixedly connected respectively. Both of the two socket connectors 72 are communicated with the cooling groove 6. On one side of the cooling frame 71, a frame plate 73 is fixedly connected. Inside the frame plate 73, a water pump 74 is fixedly connected. The input end of the water pump 74 is fixedly connected with a first pipeline. The first pipeline is fixedly connected with one side wall of the frame body 56. The output end of the water pump 74 is fixedly connected with a second pipeline 75. On the outside of the air spindle body 1, a limiting plate is fixedly connected; The second pipeline 75 penetrates through the limiting plate. On the other side wall of the frame body 56, a third pipeline 76 is fixedly connected. One ends of the second pipeline 75 and the third pipeline 76 are both fixedly connected with socket joints 77. The two socket joints 77 respectively extend into the two socket connectors 72, and the socket joints 77 are in fit with the inner sides of the socket connectors 72. After the socket joints 77 are inserted into the socket connectors 72, the friction force between the two can make them be tightly connected. Inside the cooling frame 71, heat conducting plates 78 are fixedly connected. The heat conducting plates 78 are arranged at equal intervals on the cooling frame 71. The heat conducting plates 78 extend out of the cooling frame 71. Heat dissipation openings are formed on the heat conducting plates 78. The heat conducting plates 78 can absorb the heat of the coolant in the cooling frame 71.

[0036] During the actual operation process, when this device is in use, first connect the power supply of this device. When there are impurities on the drill pipe 2, in order to clean the drill pipe 2, the first motor 491 operates and drives the first round rod 49 to rotate. The first round rod 49 drives the first pulley 492 to rotate. The first pulley 492 drives the second pulley 493 to rotate through a belt. The second pulley 493 drives the rotating rod 42 to rotate. The rotating rod 42 drives the swing plate 41 to swing with the rotating rod 42 as the axis. At this time, the two swing plates 41 respectively drive the first extension plate 43 and the second extension plate 44 to swing. The first extension plate 43 and the second extension plate 44 drive the connected connecting rod 46 to move. The connecting rod 46 drives the annular plate 45 to move until the annular plate 45 moves to one side of the drill pipe 2 and the drill pipe 2 is aligned with the center position of the brush bristles 47 and then stops. The central gap of the brush bristles 47 is smaller than the diameter of the drill pipe 2, which can ensure that the drill pipe 2 is fully in contact with the brush bristles 47 after insertion. Subsequently, the two first electric push rods 48 contract and drive the first extension plate 43 and the second extension plate 44 to move synchronously into the two swing plates 41 respectively. Through the above connection relationship, it can be known that the annular plate 45 moves towards the air spindle body 1, prompting the drill pipe 2 to be inserted into the inner side of the brush bristles 47. After controlling the rotation of the drill pipe 2, the brush bristles 47 can fully contact the outer side of the drill pipe 2 and brush off the impurities on the drill pipe 2, thereby achieving the purpose of self-cleaning; After the drill pipe 2 is cleaned, repeat the above steps to control the annular plate 45 to move directly below the air spindle main body. Then, the second electric push rod 497 operates and drives the movable plate 496 to move. The movable plate 496 drives the rack 498 to move. The rack 498 drives the gear 494 to rotate. The gear 494 drives the connected connecting rod 46 to rotate. This connecting rod 46 drives the annular plate 45 to rotate. After the support plate 51 faces the air spindle body 1, the third electric push rod 593 operates and pushes the control plate 591. The control plate 591 drives the push-pull rod 592 to swing. After the push-pull rod 592 swings, it drives the moving block 52 to move, thereby controlling the auxiliary plate 54 to stay directly below the square rod 59. Then, repeat the operation of the contraction of the first electric push rod 48 above. And through the above operation principle, it can be known that at this time, the annular plate 45 drives the support plate 51 to move upward. When the square rod 59 is inserted into the rectangular groove, as the support plate 51 continues to move upward, the effect of the square rod 59 pushing the auxiliary plate 54 is achieved. After the auxiliary plate 54 drives the scraper 55 to insert into the brush bristles 47, the second motor 596 operates and drives the auxiliary rod to rotate. The auxiliary rod drives the first bevel gear 597 to rotate. The first bevel gear 597 drives the second bevel gear 598 to rotate. The second bevel gear 598 drives the second round rod 58 to rotate. The second round rod 58 drives the square rod 59 to rotate. The square rod 59 drives the auxiliary plate 54 to rotate. After the auxiliary plate 54 drives the scraper 55 to rotate, the scraper 55 stirs the brush bristles 47 and scrapes off the impurities remaining on the brush bristles 47 itself; While the above operations are being performed, the second round bar 58 also drives the fan blades to rotate. After the fan blades rotate, the generated wind blows towards the bristles 47. In cooperation with the scraping of the scraper 55, the impurities can be quickly blown off, so as to improve the cleaning quality of the bristles 47 and facilitate the rapid development of the next cleaning work of the drill pipe 2 by the bristles 47; When the air spindle body 1 is working, a large amount of heat will be generated. After injecting the coolant into the cooling tank 6 through the upper socket 72 above, the coolant will enter the cooling frame 71. After inserting the two connectors 77 into the two sockets 72 respectively for connection, the water pump 74 works to extract the coolant in the cooling frame 71 and enters the cooling tank 6 through the second pipe 75. The coolant flowing in the cooling tank 6 will be re-sucked into the cooling frame 71 through the third pipe 76, so as to carry out circulating cooling to achieve the purpose of cooling the air spindle body 1 during operation. The heat conducting plate 78 can absorb the heat of the coolant in the cooling frame 71. At this time, the second motor 596 rotates in the opposite direction to that when driving the auxiliary plate 54 to rotate above. That is, through the above operations, it can be seen that at this time the fan blades blow in the opposite direction, that is, start to output air flow towards the heat conducting plate 78 to perform air cooling on the heat conducting plate 78, so as to effectively improve the cooling speed and the cooling efficiency is higher.

[0037] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A self-cleaning air spindle for a PCB drilling machine, comprising an air spindle body (1), characterized in that: A drill rod (2) is installed on one side of the air spindle body (1), and a mounting frame (3) is fixedly connected to the outside of the air spindle body (1), and a self-cleaning mechanism (4) is arranged on the mounting frame (3); The self-cleaning mechanism (4) includes two swing plates (41), the two swing plates (41) are respectively arranged on the front and rear sides of the mounting frame (3), a rotating rod (42) is fixedly connected to the swing plate (41), and the rotating rod (42) extends into the mounting frame (3) and is rotatably connected to the mounting frame (3). A first extension plate (43) is slidably connected inside one of the swing plates (41), and a second extension plate (44) is slidably connected inside the other swing plate (41). The first extension plate (43) and the second extension plate (44) respectively extend outside the two swing plates (41). An annular plate (45) is arranged between the first extension plate (43) and the second extension plate (44). Two connecting rods (46) are fixedly connected to the outside of the annular plate (45), and the two connecting rods (46) are respectively rotatably connected to the first extension plate (43) and the second extension plate (44). A brush (47) is fixedly connected to the inner side of the annular plate (45). First electric push rods (48) are fixedly connected to the inner sides of the two swing plates (41), and one ends of the two first electric push rods (48) are respectively fixedly connected to the inner sides of the first extension plate (43) and the second extension plate (44).

2. The self-cleaning air spindle for a PCB drilling machine according to claim 1, wherein: A first round rod (49) is rotatably connected inside the mounting frame (3), a first motor (491) is fixedly connected to the outside of the mounting frame (3), the first motor (491) is fixedly connected to one end of the first round rod (49) through an output shaft, two first belt pulleys (492) are fixedly connected to the outside of the first round rod (49), second belt pulleys (493) are fixedly connected to the outside of the two rotating rods (42), and the two first belt pulleys (492) are respectively connected to the two second belt pulleys (493) through belts.

3. The self-cleaning air spindle for a PCB drilling machine according to claim 1, wherein: A gear (494) is fixedly connected to the outside of one of the connecting rods (46), the gear (494) is arranged inside the first extension plate (43), a guide plate (495) is fixedly connected to the inside of the first extension plate (43), a movable plate (496) is slidably connected to the outside of the guide plate (495), and a second electric push rod (497) is fixedly connected to the inside of the first extension plate (43), and one end of the second electric push rod (497) is fixedly connected to the movable plate (496).

4. The self-cleaning air spindle for a PCB drilling machine according to claim 3, wherein: A rack (498) is fixedly connected to the movable plate (496), the rack (498) is arranged at the bottom of the gear (494), and the rack (498) is meshed with the gear (494).

5. The self-cleaning air spindle for a PCB drilling machine according to claim 1, characterized in that: The self-cleaning mechanism (4) includes a debris removal component (5). The debris removal component (5) includes a support plate (51). The support plate (51) is fixedly connected to the outside of the annular plate (45). A moving block (52) is slidably connected to one side wall of the support plate (51). A circular plate (53) is rotatably connected to the moving block (52). An auxiliary plate (54) is arranged on one side of the circular plate (53). A scraper (55) is integrally formed on the auxiliary plate (54). The scraper (55) penetrates the circular plate (53). A frame body (56) is arranged at the bottom of the air spindle body (1). A support plate (57) is fixedly connected to the outside of the frame body (56). One end of the support plate (57) is fixedly connected to the outside of the air spindle body (1). A second round rod (58) is rotatably connected inside the frame body (56). The second round rod (58) extends out of the frame body (56). A square rod (59) is integrally formed at one end of the second round rod (58). A rectangular groove is formed on one side of the auxiliary plate (54), and the rectangular groove is matched with the square rod (59).

6. The self-cleaning air spindle for a PCB drilling machine according to claim 5, characterized in that: A control plate (591) is slidably connected to the top wall of the support plate (51). One side of the control plate (591) is movably connected to a push-pull rod (592) through a movable hinge seat. One end of the push-pull rod (592) is movably connected to the top of the moving block (52) through a movable hinge seat. A third electric push rod (593) is fixedly connected to the inside of the support plate (51). One end of the third electric push rod (593) is fixedly connected to the control plate (591).

7. The self-cleaning air spindle for a PCB drilling machine according to claim 5, wherein: A spring (594) is fixedly connected to the circular plate (53). One end of the spring (594) is fixedly connected to the auxiliary plate (54).

8. The self-cleaning air spindle for a PCB drilling machine according to claim 5, characterized in that: Protective nets (595) are fixedly connected to both the top and bottom walls of the frame body (56). A fan blade is fixedly connected to the outside of the second round rod (58). A fixed plate is fixedly connected to the inside of the frame body (56). A second motor (596) is fixedly connected to the inside of the fixed plate. An auxiliary rod is fixedly connected to the output shaft of the second motor (596). A first bevel gear (597) is fixedly connected to one end of the auxiliary rod. A second bevel gear (598) is fixedly connected to the outside of the second round rod (58). The second bevel gear (598) is arranged at the bottom of the first bevel gear (597), and the second bevel gear (598) meshes with the first bevel gear (597).

9. The self-cleaning air spindle for a PCB drilling machine according to claim 1, characterized in that: A cooling groove (6) is provided inside the outer side wall of the air spindle body (1). A circulation assembly (7) is arranged outside the air spindle body (1). The circulation assembly (7) includes a cooling frame (71). The cooling frame (71) is fixedly connected to the outside of the air spindle body (1). Two socket connectors (72) are fixedly connected to the outside of the air spindle body (1). Both of the two socket connectors (72) are communicated with the cooling groove (6). A frame plate (73) is fixedly connected to one side of the cooling frame (71). A water pump (74) is fixedly connected to the inner side of the frame plate (73). The input end of the water pump (74) is fixedly connected with a first pipeline. The first pipeline is fixedly connected to one side wall of the frame body (56). The output end of the water pump (74) is fixedly connected with a second pipeline (75). A limiting plate is fixedly connected to the outside of the air spindle body (1). The second pipeline (75) penetrates through the limiting plate. A third pipeline (76) is fixedly connected to the other side wall of the frame body (56). One ends of the second pipeline (75) and the third pipeline (76) are both fixedly connected with socket joints (77). The two socket joints (77) respectively extend into the two socket connectors (72), and the socket joints (77) are in fit with the inner sides of the socket connectors (72).

10. A self-cleaning air spindle for a PCB drilling machine according to claim 9, characterized in that: A heat conducting plate (78) is fixedly connected to the inside of the cooling frame (71). The heat conducting plates (78) are arranged at equal intervals on the cooling frame (71). The heat conducting plates (78) extend outside the cooling frame (71). Heat dissipation openings are formed in the heat conducting plates (78).

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