GB2588560A

GB2588560A - A drilling apparatus for circuit boards

Info

Publication number: GB2588560A
Application number: GB2100837.0A
Authority: GB
Inventors: Shi Rujian
Original assignee: Zhejiang Legou Tech Co Ltd
Current assignee: Zhejiang Legou Tech Co Ltd
Priority date: 2020-04-23
Filing date: 2021-01-22
Publication date: 2021-04-28
Also published as: CN111511117B; CN111511117A; GB202100837D0

Abstract

A drilling apparatus for circuit boards, comprising: a first movable plate 601 on a first rail 600, a second movable plate 603 on a second rail 602. The circuit boards to be drilled are placed on the second movable plate and the second rail is on the first movable plate. A hydraulic cylinder 4 with a piston rod may move a drill bit downward. A first bevel gear is arranged on an output terminal of a motor housed in a shell on the piston rod. A second bevel gear is engaged with the first bevel gear and drives the drill bit rotation. A replacement device is used to change a drill bit. The replacement device is on the second bevel gear. A cleaning device, which may comprise fans and may be below the second bevel gear, is used to clean chippings from drilled holes e.g. by blowing the chippings.

Description

A DRILLING APPARATUS FOR CIRCUIT BOARDS

TECHNICAL FIELD

[0001] The present invention relates to the field of circuit boards processing, in particular to a drilling apparatus for circuit boards

BACKGROUND OF THE INVENTION

[0002] The circuit board is one of the most important electronic products, and on some occasions, the large circuit boards are required to be cut into small circuit boards, and surfaces of the circuit boards are also needed to be drilled for placing electronic components; when the existing apparatus are in use, chippings produced in cutting or drilling will remain on working station, which causes an interference to circuit boards processing and affects product quality, furthermore, as an automatic chippings cleaning can not be realized, a following manual operation for cleaning chippings with a blower is required, so that a labor of workers is increased

BRIEF SUMMARY OF THE INVENTION

[0003] The technical problem to be solved by the invention is to provide a drilling apparatus for circuit boards that is capable of automatically cleaning chippings without a manual cleaning operation after drilling performs so as to overcome the problems existing in the prior art.

[0004] The following technical plan is adopted by the invention to solve the above-mentioned technical problems: a drilling apparatus for circuit boards comprises a base, wherein a first electrical rail is fixedly arranged on a top of the base, wherein a first movable plate is fixedly arranged on a monorail trolley of the first electrical rail, wherein a second electrical rail is fixedly arranged on the first movable plate, wherein a second movable plate is fixedly arranged on a monorail trolley of the second electrical rail, wherein a stop block is fixedly arranged on the second movable plate, wherein a fixed base is fixedly arranged on the second movable plate, wherein a threaded hole is arranged on the fixed base, wherein a threaded rod is rotatably arranged within the threaded hole, wherein an pressing plate is fixedly arranged on one end of the threaded rod, wherein two of support plates are respectively and fixedly arranged on two sides of an upper end surface of the base, wherein an ejector plate is fixedly arranged on upper end surfaces of the support plates, wherein a hydraulic cylinder is fixedly arranged on a lower end surface of the ejector plate, wherein a fixed shell is fixedly arranged on a piston rod of the hydraulic cylinder, wherein a motor is arranged in the fixed shell, and a transmission house is fixedly arranged on one side surface of the fixed shell, wherein a transmission space is arranged in the transmission house, wherein a transmission hole is arranged on one side wall of the transmission space, wherein a first bevel gear is fixedly arranged on an output terminal of the motor and located in the transmission hole, and a ring is rotatably arranged on an upper end wall of the transmission space, wherein a second bevel gear is fixedly arranged on the ring, and a replacement device is used to change a bit, and a cleaning device is used to clean chippings in holes, wherein the replacement device comprises a rectangular space arranged on the second bevel gear, wherein a placement groove is arranged on a top of the rectangular space, wherein a rectangular tube is communicated with an upper end of the placement groove, wherein a clamping groove is arranged on a bottom of the rectangular space, and first limiting member and a second limiting member are used to stop the bit, and a transmission member is used to allow the first limiting members and the second member to release the bit being clamped.

[0005] The first limiting members comprise a first trapezoidal-shaped groove arranged on the top of the rectangular space, wherein first abutment blocks are movably and reciprocally disposed in a lower side of the first trapezoidal-shaped groove, wherein a first trapezoid-shaped block is fixedly arranged on upper ends of the first abutment blocks and located in the first trapezoidal-shaped groove, wherein a second trapezoidal-shaped groove is arranged on a side wall of the rectangular space, wherein second abutment blocks are vertically and movably disposed in the second trapezoid-shaped groove, wherein a second trapezoid-shaped block is fixedly arranged on the second abutment blocks and located within the second trapezoid-shaped groove, wherein a third trapezoid-shaped groove is arranged on the bottom of the rectangular space, wherein a first press spring is fixedly arranged between one side wall of the third trapezoid-shaped groove and the third trapezoid-shaped block, wherein third abutment blocks are movably and reciprocally disposed on an upper side of the third trapezoid-shaped groove, wherein a third trapezoid-shaped block is fixedly arranged on the third abutment blocks and located in the third trapezoid-shaped groove,two of the first limiting members are arranged bilaterally and symmetrically.

[0006] The second limiting member comprises a fourth trapezoid-shaped groove arranged on the top of the rectangular-shaped space, wherein fourth abutment rods are movably and reciprocally disposed in a lower side of the fourth trapezoid-shaped groove, wherein a fourth trapezoid-shaped block is fixedly arranged on the fourth abutment rods and located in the fourth trapezoid-shaped groove, Wherein a fifth trapezoid-shaped groove is arranged on a side wall of the rectangular space, wherein a fifth abutment blocks is vertically and movably arranged on one side of the fifth trapezoid-shaped groove, wherein a fifth trapezoid-shaped block is fixedly arranged on the fifth abutment blocks and located in he fifth trapezoid-shaped groove, and a through slot is arranged on the bottom of the rectangular space, and a matching shell is fixedly arranged on a lower end surface of the second bevel gear, wherein a matching space is disposed in the matching shell and communicated with the through slot, wherein a sixth trapezoid-shaped groove is arranged on a bottom of the matching space, wherein a sixth abutment blocks is reciprocally and movably arranged on the sixth trapezoid-shaped groove, wherein a sixth trapezoid-shaped block is fixedly arranged on the sixth abutment blocks and located within the sixth trapezoid-shaped groove, wherein a second press spring is fixedly arranged on the sixth trapezoid-shaped block and the one side wall of the sixth trapezoid-shaped groove, wherein two of first matching teeth are fixedly arranged on a bottom of the sixth abutment blocks, wherein a clamping inclined plate is fixedly arranged on the sixth abutment blocks, and a rotating shaft is rotatably arranged between two side walls of the matching space, wherein a second matching tooth is fixedly arranged on an outer surface of the rotating shaft and matched with two of the first matching teeth, and a seventh trapezoid-shaped groove is arranged on the bottom of the matching space, and a storage box is fixedly arranged on the rotating shaft, wherein pushing blocks are reciprocally moved respective to the bottom of the matching space, wherein a seventh trapezoid-shaped block is fixedly arranged on the pushing blocks and located in the seventh trapezoid-shaped groove, wherein a resetting spring is fixedly arranged between the seventh trapezoid-shaped block and one side wall of the seventh trapezoid-shaped groove, and a support block is fixedly arranged on the pushing blocks, and two of the second limiting members are symmetrically arranged in front-rear direction.

[00071 The transmission member comprises a lifting, plate vertically and movably an raged in the rectangular space, wherein fourth telescopic springs are fixedly and respectively arranged between four angles of a bottom of the lifting plate and the bottom of the rectangular space, and a placement through slot is arranged on the lifting plate, wherein a locating pipe is arranged to communicate with the placement through slot, and two of sliding plates are reciprocally and movably arranged on a lower end of the placement through slot respectively, wherein two of first inclined plates are respectively and fixedly arranged on bottoms of two of the sliding plates, wherein two of second inclined plates are respectively and fixedly arranged on two side walls of the rectangular space, and two of eighth trapezoid-shaped grooves are respectively arranged on two sides of a bottom of the placement groove, wherein two of eighth trapezoid-shaped blocks are respectively and fixedly arranged on each of the second inclined plates:, wherein two of the eighth trapezoid-shaped blocks are located within two of the eighth trapezoid-shaped grooves.

[0008] The cleaning device comprises a first cleaning member and a second cleaning member respectively arranged on a bottom of the transmission house, wherein a first cleaning member comprises a first movable cylinder fixedly arranged on the bottom of the transmission house, wherein a first mounting block is fixedly arranged on a piston rod of the first movable cylinder, wherein a first semi-cylindrical house is fixedly arranged on the first mounting blcrwherein a first movable house is capable of moving vertically relative to the first semi-cylindrical house, and a ninth trapezoid-shaped groove is arranged on the first semi-cylindrical house, wherein a ninth trapezoid-shaped block is fixedly arranged on the first movable house and located in the ninth trapezoid-shaped groove, and a first semi-circular rail is fixedly arranged on the first semi-cylindrical house, wherein a first semi-circular groove is arranged on the first semi-circular rail, wherein a first fan blade is capable of rotating relative to the first semi-circular groove, wherein a. first movable stopper is fixedly arranged on the first fan blade and located within the semi-circular groove, and a first electromagnet is fixedly arranged in the first mounting block, wherein a storage box is fixedly arranged on the first movable house, wherein a feeding port communicated with the storage box is arranged on an inner wall of the first semi-cylindrical house; wherein a first semi-circular block is capable of reciprocally moving relative to the first semi-circular rail, wherein a plurality of first fixed springs are fixedly arranged between the first semi-circular block and a bottom of the first semi-circular groove; the second cleaning member comprises a second movable cylinder fixedly arranged on the bottom of the transmission house, wherein a second mounting block is fixedly arranged on a piston rod of the second movable cylinder, wherein a secon cylindrical house is fixedly arranged on the second mounting block, wherein a second movable house is capable of moving vertically relative to the second semi-cylindrical house, wherein a tenth trapezoid-shaped groove is arranged on the second semi-cylindrical house, wherein a tenth trapezoid-shaped block is fixedly arranged on the second movable house and located in the tenth trapezoid-shaped groove, and a second semi-cylindrical rail is fixedly arranged on the second semi--cylindrical house, wherein a second semi--circular groove is arranged on the second semi-cylindrical rail, wherein two of second fan blades are capable of rotating relative to the second semi-circular groove, wherein two of the second movable stoppers are fixedly and respectively arranged on two of the second fan blades and located within the second semi-circular groove, wherein a second electromagnet is fixedly arranged on the second mounting block, wherein an inlet pipe is fixedly arranged on one inner wall of the second semi-cylindrical house, and a discharge pipe is fixedly arranged on the second movable house, wherein a second semi-circular block is capable of moving reciprocally relative to the second semi-cylindrical rail, wherein a plurality of second fixed springs are fixedly arranged between the second semi-circular block and a bottom of the first semicircular groove, wherein an inlet soft pipe are arranged to communicate between the inlet pipe and the discharge pipe.

[0009] In conclusion, the benefits of the invention are as follows: the apparatus is simple in structure and is capable of cleaning the chippings automatically after performing drilling, so a manual cleaning operation is not required, so as to improve a working efficiency and reduce a labor cost.

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] FIG. 1 is a stereoscopic view of the present invention; [0011] FIG. 2 is a top view of the presentinvention; [0012] FIG. 3 is a sectional perspective view along "A-A" in FIG. 2; [0013] FIG. 4 is an enlarged diagram of -B" in FIG. 3; [0014] FIG. 5 is an enlarged diagram of "C" in FIG. 4; [0015] FIG. 6 is an enlarged diagram of "D" in FIG. 5; [0016] FIG. 7 is a cross-sectional view along"A-A" direction in FIG. 2; [0017] FIG. 8 is an enlarged diagram of "E" in FIG. 7; [0018] FIG. 9 is an enlarged diagram of "F" in FIG. 8; [0019] FIG. 10 s a front view of the present invention; [0020] FIG. 11 is a sectional perspective view along "G-G" in FIG. 10; [0021] FIG. 12 is an enlarged diagram of "H" in FIG. 1 l; [0022] FIG. 13 is an enlarged diagram of "I" in FIG. 12; [0023] FIG. 14 is an enlarged diagram of "V in FIG. 13; [0024] FIG. 15 is a schematic diagram of a mounting structure of a first movable stopper and a first semi-circular rail; [0025] FIG. 16 and FIG. 17 are two schematic structural diagrams of bits with different diameters; [0026] FIG. 18 is a schematic structural diagram of a lifting plate;

DETAILED DESCRIPTION OF THE INVENTION

[0027] Referring to FIG. 1-18, a drilling apparatus for circuit boards comprises a base I, wherein a first electrical rail 600 is fixedly arranged on a top of the base 1, wherein a first movable plate 601 is fixedly arranged on a monorail trolley of the first electrical rail 600, wherein a second electrical rail 602 is fixedly arranged on the first movable plate 60 wherein a second movable plate 603 is fixedly arranged on a monorail trolley of the second electrical rail 602, wherein a stop block 604 is fixedly arranged on the second movable plate 603, wherein a fixed base 605 is fixedly arranged on the second movable plate 603, wherein a threaded hole is arranged on the fixed base 605, wherein a threaded rod 606 is rotatably arranged within the threaded hole, wherein an pressing plate 607 is fixedly arranged on one end of the threaded rod 606, wherein two of support plates 2 are respectively and fixedly arranged on two sides of an upper end surface of the base 1, wherein an ejector plate 3 is fixedly arranged on upper end surfaces of the support plates 2, wherein a hydraulic cylinder 4 is fixedly arranged on a lower end surface of the ejector plate 3, wherein a fixed shell 5 is fixedly arranged on a piston rod of the hydraulic cylinder 4, wherein a motor is arranged in the fixed shell 5, and a transmission house 6 is fixedly arranged on one side surface of the fixed shell 5, wherein a transmission space is arranged in the transmission house 6, wherein a transmission hole is arranged on one side wall of the transmission space, wherein a first bevel gear 7 is fixedly arranged on an output terminal of the motor and located in the transmission hole, and a ring 8 is rotatably arranged on an upper end wall of the transmission space, wherein a second bevel gear 9 is fixedly arranged on the ring 8, and a replacement device is used to change a bit 677, and a cleaning device is -used to clean clippings in holes; wherein the replacement device comprises a rectangular space arranged on the second bevel gear 9, wherein a placement groove is arranged on a top of the rectangular space, wherein a rectangular tube is communicated with an upper end of the placement groove, wherein a clamping groove is arranged on a bottom of the rectangular space, and first limiting member and a second limiting member are used to stop the bit 677, and a transmission member is used to allow the first limiting members and the second member to release the bit 677 being clamped; whereby the circuit boards to be drilled are placed on a second movable plate 603, and then the threaded rod 606 is rotated manually, and then the circuit boards are clamped between a pressing plate 607 and a stop block 604, and then a hydraulic cylinder is started to drive the bit 677 to move downward, and then the motor rotates to drive the first bevel gear 7 to rotate, thereby the second bevel gear 9 is driven to rotate to drive the bits to rotate for drilling holes on the circuit boards; after drilling holes is finished, the cleaning device is started to clean the chippings in the holes, and then the first eleettical rail 600 regulates a bilateral direction of the circuit boards while the second electrical rail 602 regulates an anterior-posterior direction of the circuit boards, thereby designated positions of the circuit boards are drilled in terms of requirements, and when the bit 677 is required to be changed, a clanging device is started to change the bit 677 with different diameters for drilling.

[00281 The first limiting members comprise a first trapezoidal-shaped groove arranged on the top of the rectangular space, wherein first abutment blocks 50 are movably and reciprocally disposed in a lower side of the first trapezoidal-shaped groove, wherein a first trapezoid-shaped block 70 is fixedly arranged on upper ends of the first abutment blocks 50 and located in the first trapezoidal-shaped groove, wherein a second trapezoidal-shaped groove is arranged on a side wall of the rectangular space, wherein second abutment blocks 51 are vertically and movably disposed in the second trapezoid-shaped groove, wherein a second trapezoid-shaped block is fixedly arranged on the second abutment blocks 51 and located within the second trapezoid-shaped groove, wherein a thirdtrapezoid-shaped groove is arranged on the bottom of the rectangular space, wherein a first press spring 71 is fixedly arranged between one side wall of the third trapezoid-shaped groove and the third trapezoid-shaped block, wherein third abutment blocks 52 are movably and reciprocally disposed on an upper side of the third trapezoid-shaped groove, wherein a third trapezoid-shaped block is fixedly arranged on the third abutment blocks 52 and located in the third trapezoid-shaped groove, and two of the first limiting members are arranged bilaterally and symmetrically.

[00291 The second limiting member comprises a fourth trapezoid-shaped groove arranged on the top of the rectangular-shaped space, wherein fourth abutment rods 100 are movably and reciprocally disposed in a lower side of the fourth trapezoid-shaped groove, wherein a fourth trapezoid-shaped block is fixedly arranged on the fourth abutment rods 100 and located in the fourth trapezoid-shaped groove, wherein a fifth trapezoid-shaped groove is arranged on a side wall of the rectangular space, wherein a fifth abutment blocks 101 is vertically and movably arranged on one side of the fifth trapezoid-shaped groove, wherein a fifth trapezoid-shaped block is fixedly arranged on the fifth abutment blocks 101 and located in the fifth trapezoid-shaped groove, and a. through slot is arranged on the bottom of the rectangular space, and a matching shell 103 is fixedly arranged on a lower end surface of the second bevel gear 9, wherein a matching space is disposed in the matching shell 103 and communicated with the through slot, wherein a sixth trapezoid-shaped groove is arranged on a bottom of the matching space, wherein a sixth abutment blocks 102 is reciprocally and movably arranged on the sixth trapezoid-shaped groove, wherein a sixth trapezoid-shaped block is fixedly arranged on the sixth abutment blocks 102 and located within the sixth trapezoid-shaped groove, wherein a second press spring is fixedly arranged on the sixth trapezoid-shaped block and the one side wall of the sixth trapezoid-shaped groove, wherein two of first matching teeth 173 are fixedly arranged on a bottom of the sixth abutment blocks 102, wherein a clamping inclined plate 110 is fixedly arranged on the sixth abutment blocks 102, and a rotating shaft 299 is rotatably arranged between two side walls of the matching space, wherein a second matching tooth 104 is fixedly arranged on an outer surface of the rotating shaft 299 and matched with two of the first matching teeth 173, and a. seventh trapezoid-shaped groove is arranged on the bottom of the matching space, and a storage box 295 is fixedly arranged on the rotating shaft 299, wherein pushing blocks 105 are reciprocally moved respective to the bottom of the matching space, wherein a seventh trapezoid-shaped block is fixedly arranged on the pushing blocks 105 and located in the seventh trapezoid-shaped groove, wherein a resetting spring 566 is fixedly arranged between the seventh trapezoid-shaped block and one side wall of the seventh trapezoid-shaped groove, and a support block 106 is fixedly arranged on the pushing blocks 105, and a torsion spring is fixedly arranged on the rotating shaft 299, and two of the second limiting members are symmetrically arranged in front-rear direction, and one end of the torsion spring is fixedly arranged on the side wall of the matching space.

[0030] The transmission member comprises alifting plate 150 vertically and movably arranged in the rectangular space, wherein fourth telescopic springs 619 are fixedly and respectively arranged between four angles of a bottom of the lifting plate 150 and the bottom of the rectangular space, and a placement through slot is arranged on the lifting plate 150, wherein a locating pipe 151 is arranged to communicate with the placement through slot, and two of sliding plates 152 are reciprocally and movably arranged on a lower end of the placement through slot respectively, wherein two of first inclined plates 153 are respectively and fixedly arranged on bottoms of two of the sliding plates 152, wherein two of second inclined plates 154 are respectively and fixedly arranged on two side walls of the rectangular space, and two of eighth trapezoid-shaped grooves are respectively arranged on two sides of a bottom of the placement groove, wherein two of eighth trapezoid-shaped blocks are respectively and fixedly arranged on each of the second inclined plates 154, wherein two of the eighth trapezoid-shaped blocks are located within two of the eighth trapezoid-shaped grooves, and two sides of an upper end surface of the lifting plate 150 are arranged with inclined surfaces, and an opposite end of each of first abutment rods is respectively arranged with inclined surfaces; whereby when in changing the bit 677, a tool box is placed below the bit 677 in using, and then the bit 677 that need to be replaced is put on the placement through slot, under an action of gravity, the lifting plate 150 is pushed to move downward, and when two of fourth abutment rods 100 and two of the first abutment blocks 50 are separated from an outer surface of the lifting plate 150, two of sixth abutment blocks 102 move to opposite direction to push two of the fifth abutment blocks 101 to move upwards under an action of the second press sprin,g, thereby two of the fourth abutment rods 100 are closing to each other, and at the same time, two of third abutment blocks 52 respectively move to opposite directions under an action of the first press spring to push two of the second abutment blocks Si to move upwards, thereby two of the second abutment blocks 51 pushes two of the first abutment blocks 50 to close to each other, and then two of the sixth abutment blocks 102 move towards opposite directions to drive the storage box 295 to turnover under an engagement between the first matching teeth 173 and the second matching tooth 104, thereby two of the pushing blocks 105 move towards a direction away from the bit 677 under an action of the reset spring, thereby the bit 677 fell in to the tool box, and then under an action of the torsion spring, when the first matching teeth 173 separate from the second matching tooth 104, the storage box 295 reset immediately, thereby two of the pushing blocks 105 close to each other; when the lifting Mate 150 moves downward for a certain distance_ two of the first inclined plates 153 touch two of the second inclined plates 154, thereby two of the first inclined plates 153 move towards opposite directions, thereby the bit 677 to be replaced fall from the placement through hole onto two of the pushing blocks 105 that have been reset, and then after the second inclined plates 154 leave from the lifting plate 150 to reset upwards under actions of the fourth telescopic springs 619, and then the lifting plate 150 pushes two of the first abutment blocks 50 and two of the fourth abutment rods 100 upward to move towards a direction far away from the lifting plate 150 through a contact between inclined surfaces, and then the first abutment blocks 50 push the second abutment blocks 51 to move downward, thereby two of the third abutment blocks 52 are pushed to close each other to clamp the bit 677 that is to be replaced, and then the fourth abutment rods 100 push the fifth abutment blocks 101 to move downward, and then the fifth abutment blocks 101 push two of the sixth abutment blocks 102 to close to each other to clamp the bit 677, thereby a replacement of the bit 677 can be finished without using wrenches or any other auxiliary tools, thereby the replacement of the bit 677 becomes more conveniently and apparatus using becomes more human-friendly; by arranging a clamping inclined plate 110, an inclined surface of the clamping inclined plate 110 is coupled to an inclined surface of the rectangular block on the bit 677 to stop the bit 677 on a height direction, two of the sixth abutment blocks 102 and two of the third abutment blocks 52 are able to stop the bit 677 from horizontal directions, thereby when in drilling, the circuit boards will not be scraped due to a shaky or offset of he bit 677, thereby a production quality of drilling circuit boards is capable of improving; after the lifting plate 150 moves downward for a certain distance, two of the first inclined plates 153 touch two of the second inclined plates 154, so there is enough time for the bit 677 on apparatus to fall down in advance, thereby a damage to the bit 677 as a collision between the bit 677 to be replaced and the bit 677 on apparatus.

[00311 The cleaning device comprises a first cleaning member and a second cleaning member respectively arranged on a bottom of the transmission house 6, wherein a first cleaning. member comprises a first movable cylinder 200 fixedly arranged on the bottom of the transmission house 6, wherein a first mounting block 2113 is fixedly arranged on a piston rod of the first movable cylinder 200, wherein a first semi-cylindrical house 201 arranged on the first mounting block 203, wherein a first movable house 400 is capable of moving vertically relative to the first semi-cylindrical house 201, and a ninth trapezoid-shaped groove is arranged on the first semi--cylindrical house 201, wherein a ninth trapezoid-shaped block is fixedly arranged on the first movable house 400 and located in the ninth trapezoid-shaped groove, and a first semi-circular rail 202 is fixedly arranged on the first semi-cylindrical house 201, wherein a first semi-circular groove is arranged on the first semicircular rail 202, wherein a first fan blade 293 is capable of rotating relative to the first semicircular groove, wherein a first movable stopper 294 is fixedly arranged on the first fan blade 293 and located within the semi-circular groove, and a first electromagnet is fixedly arranged in the first mounting block 203, wherein a storage box 295 is fixedly arranged on the first movable house 400, wherein a feeding port communicated with the storage box 295 is arranged on an inner wall of the first semi-cylindrical house 201, wherein a first semi-circular block 998 is capable of reciprocally moving relative to the first semi-circular rail 202, wherein a plurality of first fixed springs are fixedly arranged between the first semi-circular block 998 and a bottom of the first semi-circular groove; the second cleaning member comprises a second movable cylinder 300 fixedly arranged on the bottom of the transmission house 6, wherein a second mounting block 304 is fixedly arranged on a piston rod of the second movable cylinder 300, wherein a second semi-cylindrical house 301 is fixedly arranged on the second mounting block 304, wherein a second movable house 500 is capable of moving vertically relative to the second semi-cylindrical house 301, wherein a tenth trapezoid-shaped groove is arranged on the second semi-cylindrical house 301, wherein a tenth trapezo -shaped block is fixedly arranged on the second movable house 500 and located in the tenth trapezoid-shaped groove, and a second semi-cylindrical rail 302 is fixedly arranged on the second semi-cylindrical house 301, wherein a second semi-circular groove is arranged on the second semi-cylindrical rail 302, wherein two of second fan blades 303 are capable of rotating relative to the second semi-circular groove, wherein two of the second movable stoppers are fixedly and respectively arranged on two of the second fan blades 303 and located within the second semi-circular groove, wherein a second electromagnet is fixedly arranged on the second mounting block 304, wherein an inlet pipe 305 is fixedly arranged on one inner wall of the second semi-cylindrical house 301, and a discharge pipe 306 is fixedly arranged on the second movable house 500, wherein a second semi-circular block is capable of moving reciprocally relative to the second semi-cylindrical rail 302, wherein a plurality of second fixed springs are fixedly arranged between the second semi-circular block and a bottom of the first semi-circular groove, wherein an inlet soft pipe 307 are arranged to communicate between the inlet pipe 305 and the discharge pipe 306, wherein an installation connection method between the second movable stoppers and the first semi-circular rail 202 is the same as an installation connection method between the first movable stopper 294 and the first semi-circular rail 202; when the bit 677 drills downwards, the first movable house 400 and the second movable house 500 move upward to extrude the bit 677 out under an extrusion force of the circuit boards, thereby no interference will be caused when in drilling; when a position sensor senses the bit 677 moving upwards, the first movable cylinder 200 and the second movable cylinder 300 are started to close the first semi-cylindrical house 201 and the second semi-cylindrical house 301 for surrounding the drilled holes, arid at the same time" under actions of first fixed springs, the first semi-circular block pushes another end of the first fan blade 293 to close a drilling head 999 that is in rotating, and then under actions of second fixed springs, the second semi-circular block pushes another ends of two of the second fan blades 303 to close the rotating drilling heads, and when one end of the first fan blade 293 and one ends of the second fan blades 303 enter into three of limit rectangular grooves, the drilling head 999 drives the first fan blade 293 and two of the second fan blades 303 to rotate to absorb the chippings in the holes, and wind blew out from the first fan blade 293 and two of the second fan blades 303 enter into the discharge pipe 306 through the inlet pipe 305, thereby the blew-up chippings enter into the storage box 295 by a leftward force, thereby the chippings in the holes will be cleaned when in drilling, so that a following manual operation for cleaning the chippings in the holes one by one with a blower is not needed, thereby a working efficiency is improved; moreover, a diameter of pipe port of the discharge pipe 306 is aranged to be smaller than a diameter of pipe port of the inlet pipe 305 to increase a wind force, thereby the chippiluzs that has been blown up are easily blown into the storage box 295; after cleaning is finished, the first electromagnet and the second electromagnet are started; thereby the first movable stopper 294 and the second movable stopper overcome an elasticity of the first fixed spring and the second fixed spring to move away from a direction of the drilling heads, thereby the first fan blade 293 and the second fan blades 303 move away from the limit rectangular grooves, and then after the first movable cylinder 200 and the second movable cylinder 300 restart to drive the first semi-cylindrical house 201 and the second semi--cylindrical house 301 to separate with each other, the first electromagnet and the second electromagnet are cut off, as actions of magnetic forces, the first fan blade 293 and the second fan blades 303 will not rotate for a certain time after leaving the drilling holes, thereby the first fan blade 293 and the second fan blades 303 are capable of being stopped, thereby a safety hazard caused by throwing-out of the first fan blade 293 and the second fan blades 303 when separating from the first semi-cylindrical house 201 and the second semi-cylindrical house 301 after rotating around the first semi-cylindrical house 201 and the second semi-cylindrical house 301 as an inertia can be avoided; when in drilling, the first semi-cylindrical house 201 is separated from the second semi-cylindrical house 301, thereby the bit 677 that is in drilling is easy to perform a heat dissipation, so that a using life of the bit 677 is increased.

[0032] The present apparatus is used with the bit 677, wherein the bit 677 comprises a rectangular block 678, wherein a drilling head 679 is fixedly arranged on the rectangular block 678, wherein three limited rectangular grooves are uniformly distributed along a circumference of an outer surface of the drilling head 679, and two sides of an upper end surface of the rectangular block 678 are arranged with inclined surfaces.

[0033] Two of first sponge mats are respectively and fixedly arranged on lower end surfaces of the first movable house 400 and the second movable house 500, [0034] A sponge is fixedly arranged on a bottom of the tool box, which is able to avoid a damage as the bit 677 falls into the tool box.

[0035] The position sensor is fixedly arranged on the bottom of the transmission house 6, wherein the position sensor is connected with the first movable cylinder 200 and die second movable cylinder 300, as the position sensor is an existing technology and will therefor not he described here [0036] The first movable stopper 294 and the second movable stopper are made of iron, which can he absorbed by a magnet.

[0037] Two of second sponge mats are respectively and fixedly arranged on upper end surfaces of two of the sliding plates 152 [0038] The hydraulic cylinder, the first movable cylinder 200 and the second movable cylinder 300 are existing technologies and will therefor not be described here, moreover, the diagrams of the three components are schematic structural diagrams.

Claims

CLAIMS1. A drilling apparatus for circuit boards, comprising: a base wherein a first electricalrail is fixedly arranged on a top of the base, wherein a first movable plate is fixedly arranged on a monorail trolley of the first electrical rail, wherein a second electrical rail is fixedly arranged on the first movable plate, wherein a second movable plate is fixedly arranged on a monorail trolley of the second electrical rail, wherein a. stop block is fixedly arranged on the second movable plate, wherein a, fixec ase is fixedly arranged on the second movable plate, wherein a threaded hole is arranged on the fixed base, wherein a threaded rod is rotatably arranged within the threaded hole, wherein an pre, te is fixedly arranged on one end of the thread wherein two of support plates are respectively and fixedly arranged on two sides of an upper end surface of the base, wherein an ejector plate is fixedly arranged on upper end surfaces of the support plates.wherein a hydraulic cylinder is fixedly arranged on a lower end surface of ie ejector plate, wherein a fixed shell is fixedly arranged on a piston rod of the hydraulic cylinder, wherein a motor is arranged in the fixed shell, and a transmission house is fixedly arranged on one side surface of the fixed shell.wherein a transmission space is arranged in thetransmission house, wherein a transmission hole is arranged on one side wall of the transmIssion space, wherein a first bevel gear is fixedly arranged on an output terminal olthe motor and located in the transmission hole; a ring rotalably ananged on at end wall of the transmission space, wherein second bevel gear is fixedly arranged on the ring; a replacement device used to change a bit; a cleaning device used to clean clippings in holes, wherein the replacement device comprises a rectangular space arranged on the second bevel gear, wherein a placement groove is arranged on a top of the rectangular space, wherein a rectangular tube is communicated with an upper end of the placement groove, wherein a clamping groove is arranged on a bottom of the rectangular space; firs ember and a second limiting used to stop the bit; a transmission member used to allow the first limiting members and the second member to release the bit being clamped.
2. The drilling apparatus for circuit boards, wherein the first limiting members comprise a first trapezoidal-shaped groove arranged on the top of the rectangular space, wherein first abutment blocks are movably and reciprocally disposed in a lower side of the first trapezoidal-shaped groove, wherein a first trapezoid-shaped block is fixedly arranged on upper ends of the first abutment blocks and located in the first trapezoidal-shaped groove, wherein a second trapezoidal-shaped groove is arranged on a side wall of the rectangular space, wherein second abutment blocks are vertically and movably disposed in the second trapezoid-shaped groove, wherein a second trapezoid-shaped block is fixedly arranged on the second abutment blocks and located within the second trapezoid-shaped groove, wherein a third trapezoid-shaped groove is arranged on the bottom of the rectangular space, wherein a first prcss spring is fixedly arranged bctwccn onc side wall of the third trapezoid-shaped groove and the third trapezoid-shaped block, wherein third abutment blocks are movably and reciprocally disposed on an upper side of the third trapezoid-shaped groove, wherein a third trapezoid-shaped block is fixedly arranged on the third abutment blocks and located in the third trapezoid-shaped groove, and two of the first limiting members are arranged bilaterally and symmetrically.
3 The drilling apparatus for circuit boards, wherein the second limiting member comprises a fourth trapezoid-shaped groove arranged on the top of the rectangular-shaped space, wherein fourth abutment rods are movably and reciprocally disposed in a lower side of the fourth trapezoid-shaped groove, wherein a fourth trapezoid-shaped block is fixedly arranged on the fourth abutment rods and located in the fourth trapezoid-shaped groove, wherein a fifth trapezoid-shaped groove is arranged on a side wall of the rectangular space, wherein a fifth abutment blocks is vertically and movably arranged on one side of the fifth trapezoid-shaped groove, wherein a fifth trapezoid-shaped block is fixedly arranged on the fifth abutment blocks and located in the fifth trapezoid-shaped groove; a through slot arranged on the bottom of the rectangular space; a matching shell fixedly arranged on a lower end surface of the second bevel gear, wherein a matching space is disposed in the matching shell and communicated with the through slot, wherein a sixth trapezoid-shaped groove is arranged on a bottom of the matching space, wherein a sixth abutment blocks is reciprocally and movably arranged on the sixth trapezoid-shaped groove, wherein a sixth trapezoid-shaped block is fixedly arranged on the sixth abutment blocks and located within the sixth trapezoid-shaped groove, wherein a second press spring is fixedly arranged on the sixth trapezoid-shaped block and the one side wall of the sixth trapezoid-shaped groove, wherein two of first matching teeth are fixedly arranged on a bottom of the sixth abutment blocks, wherein a clamping inclined plate is fixedly arranged on the sixth abutment blocks; a rotating shaft rotatably arranged between two side walls of the matching space, wherein a second matching tooth is fixedly arranged on an outer surface of the rotating shaft and matched with two of the first matching teeth; a seventh trapezoid-shaped groove arranged on the bottom of the matching space, a storage box fixedly arranged on the rotating shaft, wherein pushing blocks are reciprocally moved respective to the bottom of the matching space, wherein a seventh trapezoid-shaped block is fixedly arranged on the pushing blocks and located in the seventh trapezoid-shaped groove, wherein a resetting spring is fixedly arranged between the seventh trapezoid-shaped block and one side wall of the seventh trapezoid-shaped groove; a support block fixedly arranged on the pushing blocks, two of the second limiting members symmetrically arranged in front-rear direction.
4. The drilling apparatus for circuit boards, wherein the transmission member comprises a lifting plate vertically and movably arranged in the rectangular space, wherein fourth telescopic springs are fixedly and respectively arranged between four angles of a bottom of the lifting plate and the bottom of the rectangular space; a placement through slot arranged on the lifting plate, wherein a locating pipe is arranged to communicate with the placement through slot; two of sliding plates reciprocally and movably arranged on a lower end of the placement through slot respectively, wherein two of first inclined plates are respectively and fixedly arranged on bottoms of two of the sliding plates, wherein two of second inclined plates are respectively and fixedly arranged on two side walls of the rectangular space; two of eighth trapezoid-shaped grooves respectively arranged on two sides of a bottom of the placement groove, wherein two of eighth trapezoid-shaped blocks are respectively and fixedly arranged on each of the second inclined plates, wherein two of the eighth trapezoid-shaped blocks are located within two of the eighth trapezoid-shaped grooves
5. The drilling apparatus for circuit boards, wherein the cleaning device comprises a first cleaning member and a second cleaning member respectively arranged on a bottom of the transmission house, wherein a first cleaning member comprises a first movable cylinder fixedly arranged on the bottom of the transmission house, wherein a first mounting block is fixedly arranged on a piston rod of the first movable cylinder, wherein a first semi-cylindrical house is fixedly arranged on the first mounting block, wherein a first movable house is capable of moving vertically relative to the first semi-cylindrical house; a ninth trapezoid-shaped groove arranged on the first semi-cylindrical house, wherein a ninth trapezoid-shaped block is fixedly arranged on the first movable house and located in the ninth trapezoid-shaped groove; a first semi-circular rail fixedly arranged on the first semi-cylindrical house, wherein a first semi-circular groove is arranged on the first semi-circular rail, wherein a first fan blade is capable of rotating relative to the first semi-circular groove, wherein a first movable stopper is fixedly arranged on the first fan blade and located within the semi-circular groove, a first electromagnet fixedly arranged in the first mounting block, wherein a storage box is fixedly arranged on the first movable house, wherein a feeding port communicated with the storage box is arranged on an inner wall of the first semi-cylindrical house, wherein a first semi-circular block is capable of reciprocally moving relative to the first semicircular rail, wherein a plurality of first fixed springs are fixedly arranged between the first semi-circular block and a bottom of the first semi-circular groove, the second cleaning member comprises a second movable cylinder fixedly arranged on the bottom of the transmission house, wherein a second mounting block is fixedly arranged on a piston rod of the second movable cylinder, wherein a second semi-cylindrical house is fixedly arranged on the second mounting block, wherein a second movable house is capable of moving vertically relative to the second semi-cylindrical house, wherein a tenth trapezoid-shaped groove is arranged on the second semi-cylindrical house, wherein a tenth trapezoid-shaped block is fixedly arranged on the second movable house and located in the tenth trapezoid-shaped groove, a second semi-cylindrical rail fixedly arranged on the second semi-cylindrical house, wherein a second semi-circular groove is arranged on the second semi-cylindrical rail, wherein two of second fan blades are capable of rotating relative to the second semi-circular groove, wherein two of the second movable stoppers are fixedly and respectively arranged on two of the second fan blades and located within the second semi-circular groove, wherein a second electromagnet is fixedly arranged on the second mounting block, wherein an inlet pipe is fixedly arranged on one inner wall of the second semi-cylindrical house; a discharge pipe fixedly arranged on the second movable house, wherein a second semi-circular block is capable of moving reciprocally relative to the second semi-cylindrical rail, wherein a plurality of second fixed springs are fixedly arranged between the second semicircular block and a bottom of the first scmi-circular groove, wherein an inlet soft pipe are arranged to communicate between the inlet pipe and the discharge pipe.