Drill point cleaning method

Abstract

The invention discloses a drill point cleaning method which comprises the following steps that a plurality of material boxes are placed on a belt body of a feeding conveying belt mechanism in an array shape and conveyed to the discharging end of the feeding conveying belt mechanism, a material box pushing mechanism pushes the material boxes in the first row to a belt body of a drill point taking conveying belt mechanism, and then the first material box is positioned through a material box positioning mechanism; the drill point taking transferring mechanism drives the drill point taking mechanical arm to move to the position above the positioned material box, and after one row of drill points in the material box are clamped through the drill point taking mechanical arm, the drill point taking mechanical arm moves to the position above the drill point cleaning mechanism. And the drill point taking and transferring mechanism drives the row of drill points to descend into the drill point cleaning mechanism to synchronously carry out double-pressure type up-down floating cleaning, and the cleaned row of drill points are moved to the taking and placing position of the material box to be placed back. Through cooperation of all the mechanisms and application of the steps and the method, the blade portion of the drill point extends into the drill point cleaning mechanism to be automatically cleaned, the purpose of removing sticky dust and wound cutting chips on the drill point is achieved, and the cleaning efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of PCB drill needle cleaning, and more particularly to a drill needle cleaning method. Background Art

[0002] During the production process of PCB, it is necessary to open multiple groups of circular holes with a diameter of 0.1 to 0.02 mm on the board to fix the pins of electronic components. The PCB drill needle is a special tool for opening holes on the board. After the PCB drill needle has been used for a long time, the blade wears and needs to be sharpened again (one needle can be sharpened 5 times). Before sharpening, it is necessary to clean the sticky dust, entangled cutting chips, etc. on the blade and the cutting groove of the PCB drill needle. These residues will not only affect the drilling quality, but also reduce the working efficiency of the drill needle and shorten its service life. Cleaning the PCB drill needle is convenient for the next step of the grinding machine to visually determine the grinding conclusion of the blade. The traditional cleaning method is to manually use a plastic brush to remove sticky dust and entangled cutting chips. Because the bristles of the plastic brush are coarse and parallel to the drill needle, it is impossible to effectively clean the dirt in the cutting groove on the 0.02 mm cylinder, which is easy to cause the needle to break. In addition, although the ultrasonic cleaning machine can remove general dirt, it cannot clean the entangled cutting chips. Therefore, a drill needle cleaning method is needed to solve the cleaning problem of PCB drill needles and extend their service life. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned defects in the prior art and provide a drill bit cleaning method that can realize automatic clamping and automatic cleaning of the drill bit and meet the needs of removing sticky dust and entangled cutting chips on the drill bit.

[0004] To achieve the above-mentioned purpose, the present invention provides a drill bit cleaning method, comprising a frame, a feeding conveyor belt mechanism, a feeding conveyor belt mechanism, a drill bit conveyor belt mechanism, a material box pushing mechanism, a material box positioning mechanism, a drill bit taking manipulator, a drill bit taking transfer mechanism, a drill bit cleaning mechanism, and a material box pulling mechanism, and also comprising the following steps:

[0005] S1: multiple material boxes are placed in an array on the belt body of the feeding conveyor belt mechanism and transported to its discharge end, and then the material box pushing mechanism pushes the material boxes in the front row to the belt body of the drill needle taking conveyor belt mechanism and transports them to the positions of the material box positioning mechanisms on both sides of the belt body, and then the first material box is positioned by the material box positioning mechanism;

[0006] S2: The drill needle transfer mechanism drives the drill needle manipulator to move to the top of the positioned material box, and the drill needle manipulator clamps one row of drill needles in the material box and then moves to the top of the drill needle cleaning mechanism;

[0007] S3: The drill needle transfer mechanism drives the row of drill needles to descend into the drill needle cleaning mechanism and performs double-pressure floating up and down cleaning synchronously through its first fine steel wire wheel and the second fine steel wire wheel. The row of drill needles that have completed cleaning are then driven by the drill needle transfer mechanism to move to the pick-up and placement position of the material box for return;

[0008] S4: The drill needle retrieval manipulator re-takes and places another row of drill needles until a box of drill needles is cleaned, and the material box positioning mechanism releases the material box again, and the drill needle retrieval conveyor belt mechanism drives it to the feeding end position of the unloading conveyor belt mechanism, and the above process is repeated;

[0009] S5: A row of material boxes containing cleaned drill bits are all located in front of the feeding end of the material discharge conveyor belt mechanism, and the material box pulling mechanism pulls the material discharge box onto the belt body of the material discharge conveyor belt mechanism for material discharge.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. Through the coordinated cooperation of various mechanisms and the application of the steps and methods of the present invention, the material box can be automatically loaded and unloaded and automatically positioned. The drill bit is automatically clamped by the drill bit manipulator, and the drill bit blade is inserted into the drill bit cleaning mechanism for automatic cleaning, thereby achieving the purpose of removing sticky dust and entangled cutting chips on the drill bit. The various mechanisms act in a coordinated manner, with a high degree of automation, replacing manual operation, and are highly efficient, which can meet the large-scale production needs of enterprises.

[0012] 2. The present invention transports the material box through the loading conveyor belt mechanism, the unloading conveyor belt mechanism and the drill bit conveyor belt mechanism and positions it through the material box positioning mechanism. The drill bit taking manipulator can clamp a row of drill bit head ends at one time, with high coordination reliability. The drill bit cleaning mechanism uses a physical cleaning method, adopts a double-pressure stainless steel wire wheel to rotate and scrape the drill bit surface, and repeatedly pulls down to clean, which can effectively remove dirt on the drill bit blade and the chip groove, thereby extending the service life of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the structure provided by an embodiment of the present invention;

[0015] Figure 2 It is a structural schematic diagram of a material box pushing mechanism or a material box pulling mechanism provided in an embodiment of the present invention;

[0016] Figure 3 is an enlarged schematic diagram of a material box positioning mechanism provided in an embodiment of the present invention;

[0017] Figure 4 It is a structural schematic diagram of a drill needle retrieval transfer mechanism and a drill needle retrieval manipulator provided in an embodiment of the present invention;

[0018] Figure 5 It is a schematic front view of a part of the structure of the drill needle removal manipulator provided in an embodiment of the present invention;

[0019] Figure 6 It is a bottom view schematic diagram of the structure of the drill needle removal manipulator provided in an embodiment of the present invention;

[0020] Figure 7 It is a schematic side view of the structure of the drill needle removal manipulator provided in an embodiment of the present invention (one side panel is hidden);

[0021] Figure 8 It is a schematic diagram of the exploded structure of a drill needle removal manipulator provided in an embodiment of the present invention;

[0022] Fig. 9 The structure of the drill bit cleaning mechanism provided by the embodiment of the present invention is shown in FIG. Figure 1 ;

[0023] Fig.10 The structure of the drill bit cleaning mechanism provided by the embodiment of the present invention is shown in FIG. Figure 2 ;

[0024] Fig.11 Schematic diagram of the exploded structure of the drill bit cleaning mechanism provided by an embodiment of the present invention;

[0025] Fig.12 This is a schematic diagram of the working state provided by the second embodiment of the present invention. Figure 1 ;

[0026] Fig.13 This is a schematic diagram of the material box loading state provided by the second embodiment of the present invention;

[0027] Fig.14 This is a schematic diagram of the working state provided by the second embodiment of the present invention. Figure 2 . DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Please refer to Figure 1 The embodiment of the present invention provides a drill bit cleaning method, including a frame 1, a gantry 11, a feeding conveyor belt mechanism 2, a feeding conveyor belt mechanism 3, a drill bit conveyor belt mechanism 4, a material box pushing mechanism 21, a material box positioning mechanism 41, a drill bit manipulator 5, a drill bit transfer mechanism 6, a drill bit cleaning mechanism 7, and a material box pulling mechanism 31, and also includes the following steps:

[0030] S1: multiple material boxes are placed in an array on the belt body of the feeding conveyor belt mechanism 2 and transported to its discharge end, and then the material box pushing mechanism 21 pushes the material boxes in the front row to the belt body of the drill needle conveyor belt mechanism 4 and transports them to the positions of the material box positioning mechanisms 41 on both sides of the belt body, and then the first material box is positioned by the material box positioning mechanism 41;

[0031] S2: The drill needle transfer mechanism 6 drives the drill needle manipulator 5 to move above the positioned material box, and the drill needle manipulator 5 clamps one row of drill needles in the material box and then moves to above the drill needle cleaning mechanism 7;

[0032] S3: The drill needle transfer mechanism 6 drives the row of drill needles to descend into the drill needle cleaning mechanism 7 and performs double-pressure floating up and down cleaning synchronously through the first fine steel wire wheel 74 and the second fine steel wire wheel 75. The row of drill needles that have completed cleaning are then driven by the drill needle transfer mechanism 6 to move to the pick-up and placement position of the material box for return;

[0033] S4: The drill needle retrieval manipulator 5 picks up another row of drill needles until the cleaning of a box of drill needles is completed, and the material box positioning mechanism 41 releases the material box again, and the drill needle retrieval conveyor belt mechanism 4 drives it to the feeding end position of the unloading conveyor belt mechanism 3, and the above process is repeated;

[0034] S5: A row of material boxes containing cleaned drill bits are located in front of the feeding end of the material discharge conveyor belt mechanism 3, and the material box pulling mechanism 31 pulls the material discharge box onto the belt body of the material discharge conveyor belt mechanism 3 for material discharge.

[0035] like Figure 1As shown, the drill needle conveyor belt mechanism 4 can be arranged on the workbench of the frame 1 along the length direction of the frame 1, the discharge end of the loading conveyor belt mechanism 2 is connected to the feed end of the drill needle conveyor belt mechanism 4, the material box pushing mechanism 21 is arranged above the discharge end of the loading conveyor belt mechanism 2, the material box positioning mechanism 41 is arranged on the drill needle conveyor belt mechanism 4 along the loading and conveying direction of the material box, the feed end of the unloading conveyor belt mechanism 3 is connected to the discharge end of the drill needle conveyor belt mechanism 4, the material box pulling mechanism 31 is arranged above the feed end of the unloading conveyor belt mechanism 3, the gantry 11 is arranged parallel to the loading conveyor belt mechanism 2 and is erected above the drill needle conveyor belt mechanism 4, the drill needle transfer mechanism 6 is arranged on the top of the gantry 11, the drill needle cleaning mechanism 7 is arranged on one side of the drill needle conveyor belt mechanism 4, and the drill needle manipulator 5 is arranged at the output position of the drill needle transfer mechanism 6 and is driven by the drill needle transfer mechanism 6 to move back and forth above the drill needle conveyor belt mechanism 4 and the drill needle cleaning mechanism 7.

[0036] The loading conveyor belt mechanism 2 and the unloading conveyor belt mechanism 3 both adopt a single-line flat belt conveyor line composed of a flat conveyor belt, and the drill bit conveyor belt mechanism 4 adopts a double-line flat belt conveyor line composed of two parallel and spaced belts.

[0037] like Figure 2 As shown, the push box mechanism 21 and the pull box mechanism 31 have the same structure and can both include a mounting frame 211, a push-pull cylinder 212, a push-pull mounting plate 213, an upper and lower cylinder 215, an upper and lower cylinder mounting plate 216, an inverted L-shaped push-pull plate 217, a guide rod 218, a guide sleeve 219 and a limit ring 2171. The mounting frames 211 are respectively mounted on the discharge end of the loading conveyor belt mechanism 2 and the feed end of the unloading conveyor belt mechanism 3, and the push-pull mounting plate 213 is vertically arranged on the top end of the mounting frame 211 near the drill needle conveyor belt mechanism 4. The push-pull material cylinder 212 is fixedly arranged on the mounting frame 211 in advance, and the output shaft of the push-pull material cylinder 212 extends out of the push-pull mounting plate 213 and is transmission-connected with the back side of the upper and lower cylinder mounting plate 216. The upper and lower cylinders 215 are arranged downward on the upper and lower cylinder mounting plates 216. Two guide rods 218 are provided and one end of each of them is fixedly connected to the two sides of the upper and lower cylinder mounting plates 216 respectively, and the other end of the guide rod 218 passes through the guide sleeve 219 inserted on the push-pull mounting plate 213, and the other end of the guide rod 218 is sleeved with a limit ring 2171.

[0038] During specific implementation, the upper and lower cylinders 215 and the push-pull cylinder 212 cooperate to drive the inverted L-shaped push-pull plate 217 to move down to the push-pull position of each row of material boxes, and then the push-pull cylinder 212 pushes the material box onto the belt body of the drill needle conveyor belt mechanism 4 or pulls it onto the belt body of the unloading conveyor belt mechanism 3.

[0039] like Figure 3As shown, the material box positioning mechanism 41 may include two positioning support plates 42, a lifting cylinder 43, a lifting plate 431, a positioning cylinder 44, a first positioning block 441, a second positioning block 442, an abutting cylinder 45, a first abutting block 451, a second abutting block 452, a blocking cylinder 46 and a side blocking block 461. The two positioning support plates 42 are arranged in parallel below the two spaced-apart conveying lines of the drill needle conveyor belt mechanism 4. The lifting plate 431 is lifted upward on the left positioning support plate 42 by the lifting cylinder 43, and the side blocking block 461 is in a reverse L shape. The structure is arranged and can be lifted upward on the right positioning support plate 42 through the blocking cylinder 46. The positioning cylinder 44 and the abutment cylinder 45 are fixed in sequence on the side of the conveying line facing outward and are respectively located above the lifting cylinder 43 and the blocking cylinder 46. The first positioning block 441 is transmission connected to the output shaft of the positioning cylinder 44, the first abutment block 451 is transmission connected to the output shaft of the abutment cylinder 45, the second positioning block 442 and the second abutment block 452 are respectively fixed to the corresponding first positioning block 441 and the first abutment block 451 on one side of the conveying line facing each other.

[0040] Specifically, the following steps may be included: Figure 12 to Figure 13 As shown, first, the workers arrange the material box notches 101 of multiple material boxes 10 in the direction opposite to the loading direction of the loading conveyor belt mechanism 2 and in sequence along the width direction of the loading conveyor belt mechanism 2. When the loading conveyor belt mechanism 2 moves the first row of material boxes 10 to the discharge end, the inverted L-shaped push-pull plate 217 of the material box pushing mechanism 21 descends and pushes the row of material boxes 10 onto the drill needle conveyor belt mechanism. The drill needle conveyor belt 4 drives it to move forward to the material box positioning mechanism 41. When the first material box 10 moves to above the blocking cylinder 46 and drives the side blocking block 461 to block the outer side of the material box 10 through the blocking cylinder 46, the abutment cylinder 45 drives the first abutment block 451 and cooperates with the first abutment block 452 to abut the material box 10.

[0041] like Figure 4 As shown, the drill bit transfer mechanism 6 may include a Y-axis translation module 61 and an X-axis translation drive device 62. The Y-axis translation module 61 is installed on the top surface of the gantry 11 along the setting direction of the gantry 11, and the X-axis translation drive device 62 is installed on the translation part of the Y-axis translation module 61. The Y-axis translation module 61 can drive the X-axis translation drive device 62 to move back and forth in its length direction.

[0042] Among them, the Y-axis translation module 61 can adopt a common linear drive module on the market, and the X-axis translation drive device 62 can adopt a translation drive device structure composed of (motor + screw rod + slide rail slider assembly) and can refer to the wire wheel Z-axis lifting device 78. Of course, in other embodiments, the X-axis translation drive device 62 can also adopt a linear module, which is not limited to this embodiment.

[0043] like Figures 5 to 7 As shown, the drill bit removal manipulator 5 may include a drill bit removal Z-axis lifting device 51, a stand 52, a clamping cylinder 53, a clamping cylinder mounting plate 531, a wedge block 534, a spring 535, a side plate 536, a rotating shaft 537, a drill bit clamp, and a transmission wheel 539. The drill bit removal Z-axis lifting device 51 is downwardly mounted at the output position of the X-axis translation drive device 62, and both sides of the clamping cylinder mounting plate 531 are horizontally mounted below the output position of the drill bit removal Z-axis lifting device 51 through the stand 52. The clamping cylinder 53 is downwardly fixed to the clamping cylinder 53. The top surface of the holding cylinder mounting plate 531, the top surface of the wedge block 534 is drivingly connected to the output shaft of the clamping cylinder 53 passing through the clamping cylinder mounting plate 531, the longitudinal section of the wedge block 534 is an inverted isosceles trapezoidal arrangement, the side plates 536 are respectively fixedly connected to the two ends of the clamping cylinder mounting plate 531, and the middle part of the side plate 536 is provided with a groove 5361 for sliding connection with the protrusions 5341 protruding at both ends of the wedge block 534, and two spring pieces 535 are provided and are respectively fixedly connected to the inclined surfaces on both sides of the wedge block 534 in a V shape.

[0044] like Figure 8 As shown, further, the drill bit clamping parts are provided with several groups, each group of drill bit clamping parts includes a spring 502 and two oppositely arranged clamping jaws 501, the springs 502 are respectively fixedly inserted in the oppositely opened through holes 5012 at the lower part of each group of clamping jaws 501, and the rotating shaft 537 is provided with two and respectively passes through the side plate 536 on one side and the middle part of the clamping jaws 501 arranged side by side on both sides and is fixedly connected to the side plate 536 on the other side, and the bottom end of each clamping jaw 501 is provided with a clamping groove 5011 for cooperating with the corresponding clamping jaw 501 to realize positioning and clamping of the drill bit, and a transmission wheel 539 is respectively fixedly provided on the top of each clamping jaw 501, and the two spring pieces 535 are both located between the transmission wheels 539 arranged side by side on both sides and make their outer walls respectively abut against the wheel walls of the corresponding transmission wheels 539 on the same side.

[0045] In specific implementation, when the clamping cylinder 53 drives the wedge block 534 to descend, the two spring pieces 535 move downward between the two rows of transmission wheels 539 respectively and force the transmission wheels 539 to drive the upper end of each clamping jaw 501 to move inward around the rotating shaft 537, and at the same time force the lower end of each clamping jaw 501 to open outward and then retract through the clamping cylinder 53, thereby achieving clamping of the upper part of the drill bit.

[0046] In this embodiment, the clamping grooves 5011 are all set to be V-grooves or semicircular grooves, which can effectively achieve positioning and clamping with the corresponding drill bit and ensure stability during the clamping process; the spring 502 provides a reset function to ensure that the clamping jaws 501 can quickly return to their original position when released; the stroke of the clamping cylinder 53 is adjustable, and the opening width of the drill bit clamp can be adjusted according to drill bits of different sizes or needs, with high flexibility.

[0047] Furthermore, the drill needle Z-axis lifting device 51 may include a slide cylinder 511, a slide cylinder mounting plate 512, a hydraulic buffer 513, and an anti-collision block 514. The slide cylinder 511 is vertically mounted on the output portion of the X-axis translation drive device 62 through the slide cylinder mounting plate 512. The hydraulic buffer 513 is upwardly mounted on both sides of the lower portion of the slide cylinder mounting plate 512 through a support block. The anti-collision block 514 is fixedly mounted on the upper portion of the cylinder body of the slide cylinder 511 and its protruding portion is directly opposite to the hydraulic buffer 513. The coordination of the hydraulic buffer 513 and the anti-collision block 514 is to keep the slide cylinder 511 of the Z-axis from deviating when descending, maintain the position accuracy of the PCB drill needle, and avoid the drill needle from colliding with the box body and breaking the needle.

[0048] like Fig. 9 and Fig.10 As shown, the drill bit cleaning mechanism 7 may include 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, an exhaust dust box 79 and a dust cover 791. The base plate 71 is horizontally arranged at the lifting position of the wire wheel Z-axis lifting device 78, the wire wheel opening and closing drive device 77 is arranged on the base plate 71, and the first support 72 and the second support 73 are both slidably connected to the wire wheel opening and closing drive device 77 through a slide rail slider assembly. At the output part, the first fine steel wire wheel 74 is rotatably arranged along the X-axis direction at the top of the first support 72, and the second fine steel wire wheel 75 is parallelly arranged at the top of the second support 73. Two wire wheel rotation driving devices 76 are provided and are respectively arranged on the first support 72 and the second support 73. One end of the first fine steel wire wheel 74 and the second fine steel wire wheel 75 are respectively connected to the corresponding wire wheel rotation driving devices 76 and drive them to rotate. The wire wheel opening and closing driving device 77 can drive the first fine steel wire wheel 74 and the second fine steel wire wheel 75 to approach or move away from each other.

[0049] During specific implementation, when the drill needle is located between the first fine wire wheel 74 and the second fine wire wheel 75, the wire wheel opening and closing driving device 77 drives the first fine wire wheel 74 and the second fine wire wheel 75 to approach each other and contact the drill needle blade respectively. At the same time, the wire wheel rotation driving device 76 drives the first fine wire wheel 74 and the second fine wire wheel 75 to rotate rapidly, and the wire wheel Z-axis lifting device 78 drives the overall up and down movement to realize double-pressure up and down floating cleaning of the drill needle.

[0050] Preferably, the exhaust dust box 79 is arranged between the first support 72 and the second support 73 and is located below the first fine wire wheel 74 and the second fine wire wheel 75. A through groove is provided on the top of the dust cover 791, and the dust cover 791 is arranged on the wire wheel opening and closing driving device 77 (such as Fig.14As shown) the opening of the through groove is aligned with the top between the first fine steel wire wheel 74 and the second fine steel wire wheel 75.

[0051] Among them, the top opening width of the exhaust dust 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 suction interface 790 connected to the vacuum cleaner through an external exhaust duct is provided on one side of the exhaust dust box 79. The functions of the exhaust dust box 79 and the dust cover 791 are to collect the dust brushed off in one place for easy cleaning, prevent debris from flying, and keep the working environment clean.

[0052] Specifically, the wire wheel rotation drive device 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 tensioning pulley 765. The rotation drive motor 761 is respectively installed on the lower part of the inner wall of the first support 72 and the second support 73. The first circular pulley 762 is transmission-connected with the output shaft of the rotation drive motor 761 extending out of the outer wall of the first support 72 and the second support 73. The slave pulley is rotationally connected with one end of the first fine wire wheel 74 and the second fine wire wheel 75 extending 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 installed on the outer wall of the first support 72 and the second support 73 through an adjusting block and respectively abuts against the corresponding circular belts 764.

[0053] like Fig.11 As shown, the wire wheel opening and closing drive device 77 may include an opening and closing drive motor 771, a driving 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, and a second ball nut 778. The opening and closing drive motor 771 is fixedly mounted on the bottom of the base plate 71 through a fixing plate 770, the driving wheel 772 is connected to the output shaft of the opening and closing drive motor 771, and the forward and reverse screw 776 is arranged along the X-axis direction and one end of which is rotatably mounted on the base plate 71 through the screw bearing seat 775. On the top surface of the base plate 71, one end of the forward and reverse lead screw extends out of the lead screw bearing seat 775 and is fixedly connected to the driven wheel 773, the synchronous belt 774 is sleeved on the driving wheel 772 and the driven wheel 773, and a smooth rod portion 7760 is provided in the middle of the forward and reverse lead screw 776. The first ball nut 777 and the second ball nut 778 are respectively threadedly connected to the threaded portions on both sides of the forward and reverse lead screw 776, and the bottom surfaces of the first support 72 and the second support 73 are fixedly connected to the corresponding first ball nut 777 and the second ball nut 778 through nut sleeves.

[0054] During specific implementation, the forward and reverse screw 776 is driven to rotate by the opening and closing driving motor 771, and the first ball nut 777 and the second ball nut 778 drive the first fine wire wheel 74 and the second fine wire wheel 75 to approach the blade of the drill needle therebetween.

[0055] Preferably, the wire wheel Z-axis lifting device 78 may include a Z-axis vertical plate 781, a Z-axis driving 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 driving motor 782 is fixedly mounted on the lower end of the front side of the Z-axis vertical plate 781, and the two ends of the lifting screw 783 are rotatably vertically mounted on the front side of the Z-axis vertical plate 781 through the screw support seat 784. The output shaft of the Z-axis driving motor 782 is transmission-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 thereto. Both sides of one side wall of the connecting plate 787 are slidingly connected to the front side 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 a nut sleeve, and the bottom plate 71 is horizontally fixed to the top of the connecting plate 787 through an L-shaped connecting block.

[0056] Furthermore, the first fine wire wheel 74 and the second fine wire wheel 75 of the present embodiment are both pressed-type fine stainless steel wire wheels, which are driven by the wire wheel rotation drive device 76 to perform double rapid rotation. The rotation direction of the two groups of wire wheels is to rotate oppositely and downward, so as to contact the effective length of the drill bit for drilling. The wire wheel Z-axis lifting device 78 drives the wire wheel to float up and down as a whole to meet the length of the drill bit chip groove. The pulling-down action can more effectively remove sticky dust and entangled cutting chips in the PCB drill bit blade and the chip groove.

[0057] like Fig.14 As shown, further, the Y-axis translation module 61 drives the X-axis translation drive device 62 and the drill bit removal manipulator 5 to move above the abutted material box 10, and the drill bit removal Z-axis lifting device 51 drives the clamping cylinder 53 to descend to the top of one row of drill bits 102 in the material box 10, and the clamping cylinder 53 clamps the upper part of the row of drill bits 102; then the drill bit removal transfer mechanism 6 drives the clamping claw 501 to move to the top of the drill bit cleaning mechanism 7, and drives it to descend through the dust cover 791 through the drill bit removal Z-axis lifting device 51. The opening of the drill needle 102 extends the lower end blade of the drill needle 102 between the first fine wire wheel 74 and the second fine wire wheel 75. At this time, the rotating drive motor 761 drives the corresponding first fine wire wheel 74 and the second fine wire wheel 75 to rotate at high speed. Then the opening and closing drive motor 771 drives the forward and reverse screws 776 to rotate and drive the first fine wire wheel 74 and the second fine wire wheel 75 to move closer to the middle, and drives them to float up and down through the wire wheel Z-axis lifting device 78 to clean the sticky dust and entangled cutting chips on the blade of the drill needle 102.

[0058] Further, the opening and closing driving motor 771 drives the forward and reverse screw 776 to rotate in the opposite direction and drives the first fine wire wheel 74 and the second fine wire wheel 75 to open outward, and the drill needle Z-axis lifting device 51 drives the clamping jaws 501 and the row of drill needles 102 that have been cleaned to rise and drive them back to the pick-up and placement position through the drill needle transfer mechanism 6, and the drill needle manipulator 5 picks up and places a row of drill needles again to complete the cleaning of a box of drill needles;

[0059] Further, the lifting cylinder 43 drives the lifting plate 431 to move upward, and lifts the second material box 10 to the top of the belt bodies on both sides of the drill needle conveyor belt 4, and the positioning cylinder 44 drives the first positioning block 441 and cooperates with the second positioning block 442 to position the second material box 10. After the positioning is completed, the blocking cylinder 46 descends and the abutting cylinder 45 retracts and releases the first material box 10, and the first material box 10 is driven by the drill needle conveyor belt 4 to the feeding end position of the unloading conveyor line 3;

[0060] By analogy, the inverted L-shaped push-pull plate 217 of the material box pulling mechanism 31 pulls the entire row of material boxes 10 onto the material unloading conveyor belt mechanism 3 for unloading, and finally, transfers them to the downstream machine docked with the material unloading conveyor belt mechanism 3 for the next step of the process.

[0061] To sum up, through the coordinated cooperation of various mechanisms and the application of the steps and methods of the present invention, the drill bit blade can be inserted into the drill bit cleaning mechanism for automatic cleaning, thereby achieving the purpose of removing sticky dust and entangled cutting chips on the drill bit. The various mechanisms act in a coordinated manner with a high degree of automation, replacing manual operation with high efficiency, which can meet the large-scale production needs of enterprises.

[0062] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A drill needle cleaning method, comprising a frame (1), a feeding conveyor belt mechanism (2), a feeding conveyor belt mechanism (3), a drill needle conveyor belt mechanism (4), a material box pushing mechanism (21), a material box positioning mechanism (41), a drill needle taking manipulator (5), a drill needle taking transfer mechanism (6), a drill needle cleaning mechanism (7), and a material box pulling mechanism (31), characterized in that: The following steps are also included: S1: multiple material boxes are placed in an array on the belt body of the feeding conveyor belt mechanism (2) and transported to its discharge end, and then the material box pushing mechanism (21) pushes the material boxes in the front row onto the belt body of the drill needle removal conveyor belt mechanism (4) and transports them to the positions of the material box positioning mechanisms (41) on both sides of the belt body, and then the first material box is positioned by the material box positioning mechanisms (41); S2: The drill needle transfer mechanism (6) drives the drill needle manipulator (5) to move to the top of the positioned material box, and the drill needle manipulator (5) clamps one row of drill needles in the material box and then moves to the top of the drill needle cleaning mechanism (7); S3: The drill needle transfer mechanism (6) drives the row of drill needles to descend into the drill needle cleaning mechanism (7) and performs double-pressure floating up and down cleaning synchronously through the first fine steel wire wheel (74) and the second fine steel wire wheel (75). The row of drill needles that have been cleaned are then driven by the drill needle transfer mechanism (6) to move to the pick-up and placement position of the material box and are put back; S4: The drill needle retrieval manipulator (5) retrieves and places another row of drill needles into a box of drill needles to complete the cleaning. The material box positioning mechanism (41) releases the material box and drives it to be transported to the feeding end position of the material unloading conveyor belt mechanism (3) through the drill needle retrieval conveyor belt mechanism (4), and the above process is repeated; S5: A row of material boxes containing cleaned drill bits are located in front of the feeding end of the material discharge conveyor belt mechanism (3), and the material box pulling mechanism (31) pulls the material discharge box onto the belt body of the material discharge conveyor belt mechanism (3) for material discharge.

2. A drill bit cleaning method according to claim 1, characterized in that: The machine also comprises a gantry (11), wherein the drill needle conveyor belt mechanism (4) is arranged on the frame (1) along the length direction of the frame (1), the discharge end of the feeding conveyor belt mechanism (2) is connected to the feed end of the drill needle conveyor belt mechanism (4), the material pushing box mechanism (21) is arranged above the discharge end of the feeding conveyor belt mechanism (2), the material box positioning mechanism (41) is arranged on the drill needle conveyor belt mechanism (4) along the conveying direction of the material box, the feed end of the unloading conveyor belt mechanism (3) is connected to the discharge end of the drill needle conveyor belt mechanism (4), and the material pulling box mechanism (31) is arranged on the drill needle conveyor belt mechanism (4) along the conveying direction of the material box. 1) is arranged above the feeding end of the unloading conveyor belt mechanism (3), the gantry (11) is arranged parallel to the loading conveyor belt mechanism (2) and is erected above the drill needle retrieval conveyor belt mechanism (4), the drill needle retrieval transfer mechanism (6) is arranged on the top of the gantry (11), the drill needle cleaning mechanism (7) is arranged on one side of the drill needle retrieval conveyor belt mechanism (4), and the drill needle retrieval manipulator (5) is arranged at the output position of the drill needle retrieval transfer mechanism (6) and is driven by the drill needle retrieval transfer mechanism (6) to move back and forth above the drill needle retrieval conveyor belt mechanism (4) and the drill needle cleaning mechanism (7).

3. A drill bit cleaning method according to claim 1, characterized in that: The drill bit cleaning mechanism (7) further comprises a base plate (71), a first support (72), a second support (73), a wire wheel rotation driving device (76), a wire wheel opening and closing driving device (77), and a wire wheel Z-axis lifting device (78); the base plate (71) is horizontally arranged at the lifting position of the wire wheel Z-axis lifting device (78); the wire wheel opening and closing driving device (77) is arranged on the base plate (71); the first support (72) and the second support (73) are both slidably connected to the output position of the wire wheel opening and closing driving device (77) through a slide rail slider assembly; the first fine wire wheel (74) is rotatably arranged at the top of the first support (72) along the X-axis direction; the second fine wire wheel (75) is parallelly arranged at the top of the second support (73); The wire wheel rotation driving device (76) is provided with two and is respectively arranged 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 the corresponding wire wheel rotation driving device (76); when the drill needle is located between the first fine wire wheel (74) and the second fine wire wheel (75), the wire wheel opening and closing driving device (77) drives the first fine wire wheel (74) and the second fine wire wheel (75) to approach each other and contact the drill needle blade respectively; at the same time, the wire wheel rotation driving device (76) drives the first fine wire wheel (74) and the second fine wire wheel (75) to rotate rapidly, and the wire wheel Z-axis lifting device (78) drives the entire wire wheel to move up and down, so as to realize double-pressure up and down floating cleaning of the drill needle.

4. A drill bit cleaning method according to claim 3, characterized in that: The wire wheel opening and closing drive device (77) comprises an opening and closing drive motor (771), a driving 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), and a second ball nut (778). The opening and closing drive motor (771) is fixedly mounted on the bottom of the base plate (71) through a fixing plate (770). The driving wheel (772) is drivingly connected to the output shaft of the opening and closing drive motor (771) passing through the fixing plate (770). The forward and reverse screw (776) is arranged along the X-axis direction and one end of which is rotatably mounted on the top surface of the base plate (71) through the screw bearing seat (775). One end of the forward and reverse screw extending out of the screw bearing seat (775) is connected to the driven wheel (773). The synchronous belt (774) is sleeved on the driving wheel (772) and the driven wheel (773); a smooth rod portion (7760) is provided in the middle of the forward and reverse screw (776); the first ball nut (777) and the second ball nut (778) are respectively threadedly connected with the threaded portions 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 with the first ball nut (777) and the second ball nut (778) respectively corresponding to each other through the nut sleeve; the forward and reverse screw (776) is driven to rotate by the opening and closing driving motor (771) and the first ball nut (777) and the second ball nut (778) are driven to drive the first fine wire wheel (74) and the second fine wire wheel (75) to approach the blade of the drill needle between the two.

5. A drill bit cleaning method according to claim 2, characterized in that: The drill bit transfer mechanism (6) comprises a Y-axis translation module (61) and an X-axis translation drive device (62); the Y-axis translation module (61) is installed on the top surface of the gantry (11) along the setting direction of the gantry (11); the X-axis translation drive device (62) is installed on the translation part of the Y-axis translation module (61); the Y-axis translation module (61) can drive the X-axis translation drive device (62) to move back and forth in its length direction.

6. A drill bit cleaning method according to claim 5, characterized in that: The drill needle retrieval manipulator (5) comprises a drill needle retrieval Z-axis lifting device (51), a stand (52), a clamping cylinder (53), a clamping cylinder mounting plate (531), a wedge block (534), a spring sheet (535), a side plate (536), a rotating shaft (537), and a drill needle clamping member. The drill needle retrieval Z-axis lifting device (51) is mounted downward at the output position of the X-axis translation drive device (62). Both sides of the clamping cylinder mounting plate (531) are horizontally mounted below the output position of the drill needle retrieval Z-axis lifting device (51) through the stand (52). The cylinder (53) is fixed downwardly on the top surface of the clamping cylinder mounting plate (531); the top surface of the wedge block (534) is drivingly connected to the output shaft of the clamping cylinder (53) passing through the clamping cylinder mounting plate (531); the side plates (536) are respectively fixedly connected to the two ends of the clamping cylinder mounting plate (531); two spring sheets (535) are provided and are respectively fixedly connected to the inclined surfaces on both sides of the wedge block (534) in a V shape; the drill bit clamping parts are provided in a plurality of groups, and each group of drill bit clamping parts includes a spring (502) and two clamping claws (501) arranged opposite to each other. The springs (502) are respectively fixedly inserted into the through holes (5012) oppositely opened at the bottom of each group of clamping jaws (501). The rotating shafts (537) are provided with two and respectively pass through the side plate (536) on one side and the middle of the clamping jaws (501) arranged side by side on both sides and are fixedly connected to the side plate (536) on the other side. The bottom end of each clamping jaw (501) is provided with a clamping groove (5011) for cooperating with the corresponding clamping jaw (501) to realize positioning and clamping the drill needle. The top of each clamping jaw (501) is respectively fixedly provided with a transmission wheel (539). Two spring plates ( The two spring pieces (535) are located between the transmission wheels (539) arranged side by side on both sides and their outer walls are respectively in contact with the wheel walls of the corresponding transmission wheels (539) on the same side. When the clamping cylinder (53) drives the wedge-shaped adapter block (534) to descend, the two spring pieces (535) respectively move downward between the two rows of transmission wheels (539) and force the transmission wheels (539) to drive the upper end of each clamping jaw (501) to move inward around the rotating shaft (537), and at the same time force the lower end of each clamping jaw (501) to open outward and then retract through the clamping cylinder (53), thereby achieving the clamping of the upper part of the drill needle.

7. A drill bit cleaning method according to claim 6, characterized in that: The drill needle Z-axis lifting device (51) comprises a slide cylinder (511), a slide cylinder mounting plate (512), a hydraulic buffer (513), and an anti-collision block (514). The slide cylinder (511) is vertically mounted on the output portion of the X-axis translation drive device (62) through the slide cylinder mounting plate (512). The hydraulic buffer (513) is upwardly mounted on both sides of the lower part of the slide cylinder mounting plate (512) through support blocks. The anti-collision block (514) is fixedly mounted on the upper part of the cylinder body of the slide cylinder (511) and its protruding portion is directly opposite to the hydraulic buffer (513).

8. A drill bit cleaning method according to claim 1, characterized in that: The push box mechanism (21) and the pull box mechanism (31) have the same structure and both include a mounting frame (211), a push-pull cylinder (212), a push-pull mounting plate (213), upper and lower cylinders (215), upper and lower cylinder mounting plates (216), an inverted L-shaped push-pull plate (217), a guide rod (218), a guide sleeve (219) and a limit ring (2171). The mounting frame (211) is respectively mounted on the discharge end of the loading conveyor belt mechanism (2) and the feed end of the unloading conveyor belt mechanism (3). The push-pull mounting plate (213) is vertically arranged at one end of the mounting frame (211) near the top of the drill bit conveyor belt mechanism (4). The push-pull cylinder (212) is fixedly arranged on the mounting frame (211) in advance. The output shaft of the push-pull cylinder (212) extends out of the push-pull mounting plate ( The upper and lower cylinders (215) are arranged downward on the upper and lower cylinder mounting plates (216), and two guide rods (218) are provided, and one end of each guide rod is fixedly connected to the two sides of the upper and lower cylinder mounting plates (216). The other end of the guide rod (218) passes through a guide sleeve (219) inserted on the push-pull mounting plate (213). The other end of the guide rod (218) is sleeved with a limit ring (2171). The upper and lower cylinders (215) and the push-pull material cylinder (212) cooperate to drive the inverted L-shaped push-pull plate (217) to move down to the push-pull position of each row of material boxes, and then the push-pull material cylinder (212) pushes the material box onto the belt body of the drill needle conveyor belt mechanism (4) or pulls it onto the belt body of the unloading conveyor belt mechanism (3).

9. A drill bit cleaning method according to claim 1, characterized in that: The material box positioning mechanism (41) comprises two positioning support plates (42), a lifting cylinder (43), a lifting plate (431), a correction cylinder (44), a first correction block (441), a second correction block (442), an abutment cylinder (45), a first abutment block (451), a second abutment block (452), a blocking cylinder (46) and a side blocking block (461). The two positioning support plates (42) are arranged in parallel below two spaced-apart conveying lines of the drill needle conveyor belt mechanism (4). The lifting plate (431) is lifted upward on the left positioning support plate (42) by the lifting cylinder (43). The side blocking block (461) is in the reverse L The shaped structure is arranged and can be lifted upward on the right positioning support plate (42) through a blocking cylinder (46); the correction cylinder (44) and the abutment cylinder (45) are fixed in sequence on the side of the conveying line facing outward and are respectively located above the lifting cylinder (43) and the blocking cylinder (46); the first correction block (441) is transmission-connected with the output shaft of the correction cylinder (44); the first abutment block (451) is transmission-connected with the output shaft of the abutment cylinder (45); the second correction block (442) and the second abutment block (452) are respectively fixed on the side of the conveying line facing the first correction block (441) and the first abutment block (451) corresponding to each other.

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