Steel wire wheel cleaning mechanism for drill point cleaning

Abstract

The utility model discloses a steel wire wheel cleaning mechanism for drill point cleaning, which comprises a bottom plate, a first support, a second support, a first thin steel wire wheel, a second thin steel wire wheel, a steel wire wheel rotation driving device, a steel wire wheel opening and closing driving device and a steel wire wheel Z-axis lifting device, the first thin steel wire wheel and the second thin steel wire wheel are rotatably arranged on the tops of the first support and the second support respectively and are slidably connected to the output portion of the steel wire wheel opening and closing driving device, and one end of the first thin steel wire wheel and one end of the second thin steel wire wheel are in transmission connection with the steel wire wheel rotation driving device respectively. The steel wire wheel opening and closing driving device can drive the first thin steel wire wheel and the second thin steel wire wheel to get close to each other or get away from each other. A physical cleaning mode is adopted, namely, the double-pressing-piece type stainless steel wire wheel rotates to scrape the surface of the drill point and repeatedly pulls down for cleaning, dirt in the blade portion of the drill point and a chip groove is effectively removed, and the service life of the drill point is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of drill bit cleaning equipment technology, and more specifically, to a wire wheel cleaning mechanism for cleaning drill bits. Background Technology

[0002] In PCB manufacturing, multiple sets of circular holes with diameters ranging from 0.1 to 0.02 mm need to be drilled on the board to secure the pins of electronic components. PCB drill bits are specialized tools used for drilling these holes. After prolonged use, the cutting edges of PCB drill bits wear down and require resharpening (one drill bit can be resharpened up to 5 times). Before resharpening, it is necessary to clean the cutting edge and the chip removal grooves of the PCB drill bit to remove sticky dust and tangled cutting chips. These residues not only affect drilling quality but also reduce the drill bit's efficiency and shorten its lifespan. Cleaning the PCB drill bit facilitates the visual assessment of the cutting edge's grinding results in the next step of the grinding process. Traditional cleaning methods involve manually brushing away sticky dust and tangled cutting chips with a plastic brush. However, because the bristles of the plastic brush are relatively coarse and parallel to the drill bit, it cannot effectively clean the dirt in the chip removal grooves on the 0.02 mm cylindrical part, easily causing the drill bit to break. Furthermore, although ultrasonic cleaners can remove general dirt, they cannot clean tangled cutting chips. Therefore, a wire wheel cleaning mechanism is needed to solve the cleaning problem of PCB drill bits and extend their service life. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide a wire wheel cleaning mechanism for cleaning drill bits that can remove sticky dust and entangled cutting chips.

[0004] To achieve the above objectives, this utility model provides a wire wheel cleaning mechanism for drill bit cleaning, comprising a base plate, a first support, a second support, a first fine wire wheel, a second fine wire wheel, a wire wheel rotation drive device, a wire wheel opening and closing drive device, and a wire wheel Z-axis lifting device. The base plate is horizontally disposed on the lifting part of the wire wheel Z-axis lifting device, and the wire wheel opening and closing drive device is disposed on the base plate. The first support and the second support are slidably connected to the output part of the wire wheel opening and closing drive device via a slide rail slider assembly. The first fine wire wheel is rotatably disposed on the top of the first support, and the second fine wire wheel is parallel to the first support and rotatably disposed on the top of the second support. Two wire wheel rotation drive devices are provided and respectively disposed on the first support and the second support. One end of the first fine wire wheel and the second fine wire wheel are respectively connected to their respective wire wheel rotation drive devices and can drive them to rotate. The wire wheel opening and closing drive device can drive the first fine wire wheel and the second fine wire wheel to move closer to each other or further away from each other.

[0005] Preferably, the wire wheel opening and closing drive device includes an opening and closing drive motor, a drive wheel, a driven wheel, a timing belt, a screw bearing housing, a forward and reverse screw, a first ball nut, a second ball nut, and a nut sleeve. The opening and closing drive motor is fixedly installed at the bottom of the base plate. The drive wheel is drivenly connected to the output shaft of the opening and closing drive motor. The forward and reverse screw is arranged along the length of the base plate, and one end of it is rotatably installed on the top surface of the base plate through the screw bearing housing. The end of the forward and reverse screw extending out of the screw bearing housing is fixedly connected to the driven wheel. The timing belt is sleeved on the drive wheel and the driven wheel. The forward and reverse screw has a smooth rod section in the middle. The first ball nut and the second ball nut are respectively threadedly connected to the threaded sections on both sides of the forward and reverse screw. The bottom surfaces of the first support and the second support are fixedly connected to their respective first ball nut and second ball nut through the nut sleeve.

[0006] Preferably, each of the steel wire wheel rotation drive devices includes a rotation drive motor, a first circular pulley, a second circular pulley, a circular belt, and a circular belt tensioner. The rotation drive motor is respectively installed on the lower part of the inner sidewall of the first support and the second support. The first circular pulley is driven by the output shaft of the rotation drive motor extending out of the outer wall of the first support and the second support. The second circular pulley is rotatably connected to one end of the first fine steel wire wheel and the second fine steel wire wheel extending out of the first support and the second support, respectively. The circular belt is respectively sleeved between the first circular pulley and the second circular pulley. The circular belt tensioner is rotatably installed on the outer wall of the first support and the second support through an adjusting block and abuts against its corresponding circular belt.

[0007] Preferably, the Z-axis lifting device for the wire wheel includes a Z-axis vertical plate, a Z-axis drive motor, a lifting screw, a screw support, a coupling, a lifting nut, and a connecting plate. The Z-axis drive motor is fixedly installed at the lower front end of the Z-axis vertical plate. The two ends of the lifting screw are rotatably and vertically installed on the front of the Z-axis vertical plate through the screw support. The output shaft of the Z-axis drive motor is connected to one end of the lifting screw extending from the screw support through the coupling. The lifting nut is sleeved on the lifting screw and threadedly connected to it. The two sides of one side wall of the connecting plate are slidably connected to the front of the Z-axis vertical plate along the Z-axis direction through a slide rail slider assembly. The middle part of the connecting plate is fixedly connected to the lifting nut through a nut sleeve. The base plate is horizontally fixed to the top of the connecting plate through an L-shaped connecting block.

[0008] Preferably, the device also includes a dust collection box and a dust cover. The dust collection box is disposed between the first support and the second support and below the first and second fine steel wire wheels. The top of the dust cover has a through groove. The dust cover covers the opening and closing drive device of the steel wire wheels and the opening of its through groove is directly above the space between the first and second fine steel wire wheels.

[0009] Preferably, the dust collection box has a dust suction port on one side for connecting to an external dust suction pipe.

[0010] Preferably, both the first and second fine wire wheels are configured as pressure-type fine stainless steel wire wheels.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This utility model features a novel structure and reasonable design. Through the coordinated operation of various components such as the wire wheel opening and closing drive device, the wire wheel rotation drive device, and the wire wheel Z-axis lifting device, it adopts a physical cleaning method. Specifically, the double-plate stainless steel wire wheel rotates and scrapes the surface of the drill bit. After repeated downward cleaning, it can effectively remove dirt from the drill bit cutting edge and chip removal groove, extend the service life of the drill bit, and achieve efficient, precise, and automated control of drill bit cleaning. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of a wire wheel cleaning mechanism for cleaning drill bits, provided in an embodiment of this utility model. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the structure of a wire wheel cleaning mechanism for cleaning drill bits, provided in an embodiment of this utility model. Figure 2 ;

[0016] Figure 3 This is an exploded schematic diagram of a wire wheel cleaning mechanism for cleaning drill bits provided in an embodiment of this utility model;

[0017] Figure 4 This is a top view schematic diagram of a wire wheel cleaning mechanism for cleaning drill bits provided in an embodiment of this utility model;

[0018] Figure 5 This is a side view schematic diagram of a wire wheel cleaning mechanism for cleaning drill bits provided in an embodiment of this utility model. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] Please refer to Figure 1 The present invention provides a wire wheel cleaning mechanism for cleaning drill bits, including a base plate 71, a first support 72, a second support 73, a first fine wire wheel 74, a second fine wire wheel 75, a wire wheel rotation drive device 76, a wire wheel opening and closing drive device 77, a wire wheel Z-axis lifting device 78, etc. The components of this embodiment will be described in detail below with reference to the accompanying drawings.

[0021] like Figure 1 and Figure 2 As shown, the base plate 71 can be horizontally set at the lifting part of the wire wheel Z-axis lifting device 78. The wire wheel opening and closing drive device 77 is set on the base plate 71. The first support 72 and the second support 73 are both slidably connected to the output part of the wire wheel opening and closing drive device 77 through the slide rail slider assembly. The first fine wire wheel 74 is rotatably set on the top of the first support 72. The second fine wire wheel 75 is parallel to the first support 72 and rotatably set on the top of the second support 73. There are two wire wheel rotation drive devices 76, which are respectively set on the first support 72 and the second support 73. One end of the first fine wire wheel 74 and the second fine wire wheel 75 are respectively connected to their respective wire wheel rotation drive devices 76 and can drive them to rotate. The wire wheel opening and closing drive device 77 can drive the first fine wire wheel 74 and the second fine wire wheel 75 to move closer to each other or further away from each other.

[0022] The first support 72 and the second support 73 respectively support the first fine wire wheel 74 and the second fine wire wheel 75, and enable them to move relative to each other along the slide rail slider assembly to adjust the distance between the two wire wheels. This allows the wire wheels to press or release the drill bit as they move closer and further away, and can also adapt to different drill bit diameters, increasing the flexibility of cleaning.

[0023] In this embodiment, the wire wheel opening and closing drive device 77 may include an opening and closing drive motor 771, a drive wheel 772, a driven wheel 773, a timing belt 774, a lead screw bearing seat 775, a forward and reverse lead screw 776, a first ball nut 777, a second ball nut 778, and a nut sleeve 779. The opening and closing drive motor 771 is fixedly installed at the bottom of the base plate 71. The drive wheel 772 is connected to the output shaft of the opening and closing drive motor 771 through the fixed plate 770. The forward and reverse lead screw 776 is arranged along the length of the base plate 71 and one end of it passes through the lead screw bearing seat 775. Rotatably mounted on the top surface of the base plate 71, one end of the forward and reverse screw extending out of the screw bearing seat 775 is fixedly connected to the driven wheel 773. The synchronous belt 774 is sleeved on the driving wheel 772 and the driven wheel 773. The forward and reverse screw 776 has a smooth rod part 7760 in the middle. The first ball nut 777 and the second ball nut 778 are respectively threaded to the threaded parts on both sides of the forward and reverse screw 776. The bottom surfaces of the first support 72 and the second support 73 are fixedly connected to their respective first ball nut 777 and second ball nut 778 through nut sleeves 779.

[0024] In practice, when the forward and reverse screw 776 rotates, the first ball nut 777 and the second ball nut 778 move closer to each other on the threaded part of the forward and reverse screw 776, and when the forward and reverse screw 776 rotates in the opposite direction, the first ball nut 777 and the second ball nut 778 move away from each other.

[0025] like Figure 3 As shown, each of the steel wire wheel rotation drive devices 76 may include a rotation drive motor 761, a first circular pulley 762, a second circular pulley 763, a circular belt 764, and a circular belt tensioner 765. The rotation drive motor 761 is respectively installed on the lower part of the inner sidewall of the first support 72 and the second support 73. The first circular pulley 762 is connected to the output shaft of the rotation drive motor 761 that extends out of the outer wall of the first support 72 and the second support 73. The second circular pulley is rotatably connected to one end of the first fine steel wire wheel 74 and the second fine steel wire wheel 75 that extend out of the first support 72 and the second support 73, respectively. The circular belt 764 is respectively sleeved between the first circular pulley 762 and the second circular pulley 763. The circular belt tensioner 765 is rotatably installed on the outer wall of the first support 72 and the second support 73 through an adjusting block and abuts against its corresponding circular belt 764.

[0026] In practice, the position of the round belt tensioner 765 can be adjusted to maintain the appropriate tension of the round belt 764, thereby ensuring the smoothness and reliability of the transmission, and thus ensuring that the first fine wire wheel 74 and the second fine wire wheel 75 rotate quickly and stably.

[0027] Specifically, the Z-axis lifting device 78 of the wire wheel may include a Z-axis vertical plate 781, a Z-axis drive motor 782, a lifting screw 783, a screw support seat 784, a coupling 785, a lifting nut 786, and a connecting plate 787. The Z-axis drive motor 782 is fixedly installed at the lower front end of the Z-axis vertical plate 781. The two ends of the lifting screw 783 are rotatably and vertically installed on the front of the Z-axis vertical plate 781 through the screw support seat 784. The output shaft of the Z-axis drive motor 782 is connected to one end of the lifting screw 783 extending out of the screw support seat 784 through the coupling. The lifting nut 786 is sleeved on the lifting screw 783 and threadedly connected to it. The two sides of one side wall of the connecting plate 787 are slidably connected to the front of the Z-axis vertical plate 781 along the Z-axis direction through a slide rail slider assembly. The middle part of the connecting plate 787 is fixedly connected to the lifting nut 786 through the nut sleeve 779. The base plate 71 is horizontally fixed to the top of the connecting plate 787 through an L-shaped connecting block.

[0028] Furthermore, in this embodiment, both the first fine wire wheel 74 and the second fine wire wheel 75 can be configured as pressure-plate type fine stainless steel wire wheels. The wire wheel rotation drive device 76 drives the two to rotate rapidly. The two sets of wire wheels rotate in opposite directions and downwards, which can contact the effective drilling length of the drill bit. The Z-axis lifting device 78 of the wire wheel drives the wire wheel to float up and down as a whole to meet the length of the drill bit chip removal groove. The downward pull action more effectively removes sticky dust and entangled cutting chips from the PCB drill bit cutting edge and chip removal groove.

[0029] like Figure 4 and Figure 5 As shown, it may also include a dust collection box 79 and a dust cover 80. The dust collection box 79 is disposed between the first support 72 and the second support 73 and below the first fine wire wheel 74 and the second fine wire wheel 75. The top of the dust cover 80 is provided with a through groove 801. The dust cover 80 covers the wire wheel opening and closing drive device 77 and the opening of its through groove 801 is directly above the space between the first fine wire wheel 74 and the second fine wire wheel 75.

[0030] Preferably, a dust collection port 791 for connecting an external dust collection pipe can be provided on one side of the dust collection box 79.

[0031] The top opening width of the dust collection box 79 is greater than the maximum stroke width of the first fine steel wire wheel 74 and the second fine steel wire wheel 75. A dust collection interface 791 connected to the vacuum cleaner through an external exhaust pipe is provided on one side of the dust collection box 79. The function of the dust collection box 79 and the dust cover 791 is to collect the brushed-off micro-dust in one place, which is convenient for cleaning and prevents the debris from flying, thus maintaining a clean working environment.

[0032] The working principle of this embodiment is as follows:

[0033] First, an external drill bit retrieval robot drives a row of drill bits through the through slot 801 of the dust cover 80, extending the lower cutting edge of each drill bit 102 between the first fine steel wire wheel 74 and the second fine steel wire wheel 75. At this time, the rotation drive motor 761 drives the corresponding first fine steel wire wheel 74 and the second fine steel wire wheel 75 to rotate at high speed. Then, the opening and closing drive motor 771 drives the forward and reverse screw 776 to rotate and drive the first fine steel wire wheel 74 and the second fine steel wire wheel 75 to move closer to the center. The Z-axis lifting device 78 of the steel wire wheel drives the whole thing to float up and down, which can effectively clean the sticky dust and entangled cutting chips on the cutting edge of the drill bit. Next, the opening and closing drive motor 771 drives the forward and reverse screw 776 to rotate in the opposite direction and drive the first fine steel wire wheel 74 and the second fine steel wire wheel 75 to open outward. Finally, the drill bit retrieval robot transfers the cleaned drill bit to the material box for the next process.

[0034] In summary, this utility model adopts a physical cleaning method, namely, the rotating scraping of the drill bit surface by a double-pressure stainless steel wire wheel. After repeated downward cleaning, it can effectively remove dirt from the drill bit cutting edge and chip removal groove, extend the service life of the drill bit, and achieve efficient, precise and automated control of drill bit cleaning.

[0035] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A wire wheel cleaning mechanism for cleaning drill bits, characterized in that: The device includes a base plate (71), a first support (72), a second support (73), a first fine wire wheel (74), a second fine wire wheel (75), a wire wheel rotation drive device (76), a wire wheel opening and closing drive device (77), and a wire wheel Z-axis lifting device (78). The base plate (71) is horizontally positioned at the lifting part of the wire wheel Z-axis lifting device (78). The wire wheel opening and closing drive device (77) is mounted on the base plate (71). The first support (72) and the second support (73) are slidably connected to the output part of the wire wheel opening and closing drive device (77) via a slide rail slider assembly. The first fine wire wheel (74)... The first fine wire wheel (75) is rotatably mounted on the top of the first support (72). The second fine wire wheel (75) is parallel to the first support (72) and rotatably mounted on the top of the second support (73). The wire wheel rotation drive device (76) has two parts and is respectively mounted on the first support (72) and the second support (73). One end of the first fine wire wheel (74) and the second fine wire wheel (75) are respectively connected to their respective wire wheel rotation drive devices (76) and can drive them to rotate. The wire wheel opening and closing drive device (77) can drive the first fine wire wheel (74) and the second fine wire wheel (75) to move closer to each other or further away from each other.

2. The wire wheel cleaning mechanism for drill bit cleaning according to claim 1, characterized in that: The wire wheel opening and closing drive device (77) includes an opening and closing drive motor (771), a drive wheel (772), a driven wheel (773), a synchronous belt (774), a screw bearing seat (775), a forward and reverse screw (776), a first ball nut (777), a second ball nut (778), and a nut sleeve (779). The opening and closing drive motor (771) is fixedly installed on the bottom of the base plate (71) through a fixing plate (770). The drive wheel (772) is connected to the output shaft of the opening and closing drive motor (771) through the fixing plate (770). The forward and reverse screw (776) is arranged along the length of the base plate (71) and one end of it passes through the screw bearing seat (775). The screw is rotatably mounted on the top surface of the base plate (71). One end of the screw extending out of the screw bearing seat (775) is fixedly connected to the driven wheel (773). The synchronous belt (774) is sleeved on the driving wheel (772) and the driven wheel (773). The middle part of the screw (776) is provided with a smooth rod part (7760). The first ball nut (777) and the second ball nut (778) are respectively threaded to the threaded parts on both sides of the screw (776). The bottom surfaces of the first support (72) and the second support (73) are fixedly connected to their respective first ball nut (777) and second ball nut (778) through nut sleeves (779).

3. The wire wheel cleaning mechanism for drill bit cleaning according to claim 1, characterized in that: Each of the steel wire wheel rotation drive devices (76) includes a rotation drive motor (761), a first circular pulley (762), a second circular pulley (763), a circular belt (764), and a circular belt tensioner (765). The rotation drive motor (761) is respectively installed on the lower inner sidewall of the first support (72) and the second support (73). The first circular pulley (762) drives the output shaft of the rotation drive motor (761) which extends out of the outer wall of the first support (72) and the second support (73). The second circular pulley is rotatably connected to one end of the first fine steel wire pulley (74) and the second fine steel wire pulley (75) that extends out of the first support (72) and the second support (73), respectively. The circular belt (764) is respectively sleeved between the first circular pulley (762) and the second circular pulley (763). The circular belt tensioning pulley (765) is rotatably mounted on the outer wall of the first support (72) and the second support (73) through the adjusting block and abuts against the corresponding circular belt (764).

4. The wire wheel cleaning mechanism for drill bit cleaning according to claim 1, characterized in that: The Z-axis lifting device (78) of the wire wheel includes a Z-axis vertical plate (781), a Z-axis drive motor (782), a lifting screw (783), a screw support seat (784), a coupling (785), a lifting nut (786), and a connecting plate (787). The Z-axis drive motor (782) is fixedly installed on the lower front end of the Z-axis vertical plate (781). The two ends of the lifting screw (783) are rotatably and vertically installed on the front of the Z-axis vertical plate (781) through the screw support seat (784). The output shaft of the Z-axis drive motor (782) is connected to the Z-axis vertical plate (781). The coupling is connected to the end of the lifting screw (783) extending out of the screw support seat (784). The lifting nut (786) sleeve (779) is set on the lifting screw (783) and threadedly connected to it. The two sides of one side wall of the connecting plate (787) are slidably connected to the front of the Z-axis vertical plate (781) along the Z-axis direction through the slide rail slider assembly. The middle part of the connecting plate (787) is fixedly connected to the lifting nut (786) through the nut sleeve (779). The bottom plate (71) is horizontally fixed to the top of the connecting plate (787) through the L-shaped connecting block.

5. A wire wheel cleaning mechanism for drill bit cleaning according to claim 1, characterized in that: It also includes a dust collection box (79) and a dust cover (80). The dust collection box (79) is located between the first support (72) and the second support (73) and below the first fine wire wheel (74) and the second fine wire wheel (75). The top of the dust cover (80) is provided with a through groove (801). The dust cover (80) covers the wire wheel opening and closing drive device (77) and the opening of its through groove (801) is directly above the space between the first fine wire wheel (74) and the second fine wire wheel (75).

6. A wire wheel cleaning mechanism for drill bit cleaning according to claim 5, characterized in that: The dust collection box (79) has a dust suction port (791) on one side for connecting to an external dust suction pipe.

7. A wire wheel cleaning mechanism for cleaning drill bits according to claim 1, characterized in that: The first fine steel wire wheel (74) and the second fine steel wire wheel (75) are both configured as pressure plate type fine stainless steel wire wheels.

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