CN113079641B - Production system and working method of PCB substrate of annular lamp - Google Patents
Production system and working method of PCB substrate of annular lamp Download PDFInfo
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- CN113079641B CN113079641B CN202110201201.8A CN202110201201A CN113079641B CN 113079641 B CN113079641 B CN 113079641B CN 202110201201 A CN202110201201 A CN 202110201201A CN 113079641 B CN113079641 B CN 113079641B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0014—Shaping of the substrate, e.g. by moulding
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/02—Details related to mechanical or acoustic processing, e.g. drilling, punching, cutting, using ultrasound
- H05K2203/0228—Cutting, sawing, milling or shearing
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Abstract
The invention discloses a production system of a PCB (printed circuit board) substrate of an annular lamp, which comprises a circular rotary platform, wherein a central column is coaxially arranged at the upper side axis of the circular rotary platform, and a vertical eccentric column is arranged at the upper side eccentric position of the circular rotary platform; according to the invention, the circular plate can be smoothly cut into the circular arc-shaped PCB, and then the cut circular arc-shaped PCBs are combined to form a circular ring structure, so that the comprehensive plate utilization rate is higher than that of a traditional mode of cutting a whole circular ring.
Description
Technical Field
The invention belongs to the field of PCB production.
Background
The PCB substrate of the existing annular LED ceiling lamp is a full circular ring, and a large circular plate in the middle of the PCB substrate with the full circular ring structure (shown in figure 1) needs to be discarded in the cutting process, so that the plate waste is caused;
the applicant believes that the annular PCB substrate itself may be formed from a combination of arcuate PCB panels (as shown in figure 2); therefore, a special mechanism for cutting the PCB into the arc-shaped PCB can be designed, and the comprehensive board utilization rate is higher.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a production system and a working method of a PCB substrate of an annular lamp.
The technical scheme is as follows: in order to achieve the purpose, the production system of the PCB substrate of the annular lamp comprises a circular rotary platform, wherein a central column is coaxially arranged at the upper side axis of the circular rotary platform, and a vertical eccentric column is arranged at the upper side eccentric position of the circular rotary platform;
the PCB cutting machine is characterized by further comprising a round PCB to be cut, wherein a center hole is formed in the axis of the round PCB to be cut, and an eccentric hole is formed in one side of the center hole; the center post slides with the axle center and passes the centre bore, eccentric post slides with the axle center and passes the eccentric orfice to make circular waiting to cut PCB panel follow circular revolving platform gyration still includes the cutting unit, the cutting unit can with circular waiting to cut PCB panel cuts into a plurality of circular circumference array distribution arc form PCB blank boards.
Furthermore, a plurality of arc-shaped cantilever supporting beams distributed in a circumferential array are fixedly connected to the periphery of the circular rotary platform, and the upper surfaces of the arc-shaped cantilever supporting beams are higher than the upper surface of the circular rotary platform, so that the upper surfaces of the arc-shaped cantilever supporting beams are in supporting contact with the lower surface of the circular PCB to be cut;
the cutting unit is used for cutting a circular PCB to be cut into a plurality of arc-shaped PCB blank plates distributed in a circumferential array, and the overlooking profiles of the arc-shaped PCB blank plates are respectively superposed with the overlooking profiles of the arc-shaped cantilever supporting beams.
Furthermore, the mechanism comprises a mechanism base, wherein a vertical brake type stepping motor is fixedly mounted on the mechanism base, and the upper end of an output rotating shaft of the brake type stepping motor is fixedly connected with the circular rotating platform with the same axis.
Furthermore, the cutting unit comprises a vertical bearing seat, a vertical rotary arm shaft is rotatably arranged in the bearing seat through a bearing, a horizontal rotary arm is fixedly connected to the upper end of the rotary arm shaft, the tail end of the rotary arm is fixedly connected with a horizontal arc-shaped beam, a plurality of transmission tooth bodies are arranged on the outer edge of the arc-shaped beam in an equidistant array, and the arc-shaped circle center of the arc-shaped beam is overlapped with the axis of the rotary arm shaft; the arc-shaped beam counter-time needle end lower side fixed mounting has first milling cutter driver and second milling cutter driver, still includes vertical first PCB cutting milling cutter and second PCB cutting milling cutter, first milling cutter driver and second milling cutter driver drive respectively and connect first PCB cutting milling cutter and second PCB cutting milling cutter.
Furthermore, a second stepping motor is fixedly installed on the mechanism base, a motor output shaft of the second stepping motor is coaxially and synchronously connected with a transmission gear, and the transmission gear is meshed with the plurality of transmission tooth bodies on the arc-shaped beam.
Further, recording the circle center of the circular PCB to be cut as a first circle center, and recording the arc-shaped circle center of the arc-shaped beam as a second circle center; setting a virtual circle, wherein the first circle center is on the virtual circle, the circle center of the virtual circle is coincident with the second circle center, and the radius of the virtual circle is recorded as R; a path of the first PCB cutting milling cutter rotating around a second circle center is recorded as a first circular feed path, and a path of the second PCB cutting milling cutter rotating around the second circle center is recorded as a second circular feed path; the radius of the first circular feed path and the radius of the second circular feed path are R1 and R2 respectively, and R-R1 is R2-R; the first PCB cutting milling cutter can cut a first circular arc hollow-out cutting seam on a circular PCB to be cut along the movement of the first circular feed path, and the second PCB cutting milling cutter can cut a second circular arc hollow-out cutting seam on the circular PCB to be cut along the movement of the second circular feed path.
Furthermore, the cutting unit also comprises a lifter fixedly installed on the mechanism base, the top end of a lifting rod of the lifter is fixedly connected with a lifting beam, a vertical cutting knife motor is fixedly installed on the lower side of the lifting beam, the output shaft of the cutting knife motor and the central column are coaxial, the lower end of the central column is coaxially connected with a cylindrical cutting knife, and the cylindrical cutting knife synchronously rotates along with the output shaft; a plurality of cutting sawteeth with downward tips are distributed at the lower end of the cylindrical cutting knife along the circular contour in an equidistant array manner; the contour line of the vertical projection of the cylindrical cutter on the circular PCB to be cut is marked as a virtual cutting line; and the descending of the lifting beam enables the cylindrical cutter to cut the PCB along the virtual cutting line.
Furthermore, a vacancy which is communicated up and down is formed between any two adjacent arc-shaped PCB blank plates in a plurality of arc-shaped PCB blank plates which are distributed in a circumferential array mode and are cut by the cutting unit, and two arc-shaped inner side walls of the vacancy are respectively a first arc-shaped inner side wall and a second arc-shaped inner side wall; a vacancy filling block is arranged right above any vacancy, the vacancy filling block can move downwards into the vacancy, and when the vacancy filling block is in the vacancy, the outer side walls of two cambered surfaces of the vacancy filling block are respectively in sliding fit with the first cambered inner side wall and the second cambered inner side wall;
the periphery of cutting knife motor is provided with cyclic annular lift platform, the downside of cyclic annular lift platform is fixed through a plurality of support columns and is connected a plurality of vacancy filling blocks respectively, cyclic annular lift platform pass through the second riser with the lift roof beam is connected, cyclic annular lift platform can be relative elevating movement with the lift roof beam under the effect of second riser.
Further, the working method of the production system of the PCB substrate of the annular lamp comprises the following steps:
the method comprises the following steps:
step one, a brake type stepping motor is in a brake state in an initial state, and the circular PCB to be cut cannot rotate around a first circle center; in order to avoid motion interference in the subsequent cutting process, the lifter is controlled to ascend until the cylindrical cutting knife and each vacancy filling block are higher than the arc-shaped beam, and the first PCB cutting milling cutter and the second PCB cutting milling cutter are outside the outline of the circular PCB to be cut in the initial state;
step two, controlling the first milling cutter driver and the second milling cutter driver to enable the first PCB cutting milling cutter and the second PCB cutting milling cutter to rotate along the axes of the first PCB cutting milling cutter and the second PCB cutting milling cutter at a cutting speed of 180-270 m/min and maintain the first PCB cutting milling cutter and the second PCB cutting milling cutter in the subsequent steps;
step three, controlling a second stepping motor to rotate in the forward direction, enabling a transmission gear to drive the arc-shaped beam to rotate anticlockwise around a second circle center under the action of meshing transmission, so that the first PCB cutting milling cutter and the second PCB cutting milling cutter feed along the anticlockwise directions of the first circular feed path and the second circular feed path respectively, when the first PCB cutting milling cutter and the second PCB cutting milling cutter feed along the anticlockwise directions of the first circular feed path and the second circular feed path respectively into the outline of the circular PCB to be cut, the first PCB cutting milling cutter and the second PCB cutting milling cutter can gradually cut a first arc hollow-out kerf and a second arc hollow-out kerf on the circular PCB to be cut until the first PCB cutting milling cutter and the second PCB cutting milling cutter simultaneously contact virtual cutting lines under the overlooking view angle, and one first arc hollow-out kerf and one second arc hollow-out kerf are cut completely, a non-falling arc-shaped PCB blank plate is formed between the adjacent first arc-shaped hollow joint and the second arc-shaped hollow joint, and the second stepping motor is controlled to reversely rotate, so that the transmission gear drives the arc-shaped beam to clockwise rotate by taking a second circle center as a center under the action of meshing transmission, and the first PCB cutting milling cutter and the second PCB cutting milling cutter are retreated along the clockwise direction of the first circular feed path and the clockwise direction of the second circular feed path respectively until the first PCB cutting milling cutter and the second PCB cutting milling cutter return to the outside of the outline of the circular PCB to be cut;
the formed first arc hollow joint-cutting and the second arc hollow joint-cutting are respectively marked as a first arc hollow joint-cutting and a second arc hollow joint-cutting; the arc PCB blank board formed at this time is marked as a first arc PCB blank board;
controlling a brake type stepping motor to operate, and enabling the circular PCB to be cut to rotate clockwise by a degree by taking the first circle center as a center;
step five, repeating the step three once;
after repeating step three once: the first PCB cutting milling cutter and the second PCB cutting milling cutter cut a first arc hollow joint-cutting and a second arc hollow joint-cutting on the circular PCB plate to be cut again, and the formed first arc hollow joint-cutting and second arc hollow joint-cutting are marked as a second first arc hollow joint-cutting and a second arc hollow joint-cutting respectively; marking the formed arc-shaped PCB blank plate as a second arc-shaped PCB blank plate; the intersection point formed by the first circular arc hollow joint-cutting slot and the second circular arc hollow joint-cutting slot is marked as a joint-cutting intersection point, a waste plate can automatically fall off between the first circular arc hollow joint-cutting slot and the second circular arc hollow joint-cutting slot, and after the waste plate falls off, a through vacancy is formed between two adjacent arc-shaped PCB blank plates;
step six, repeating the step four and the step five for N-2 times, and meeting the condition that the N multiplied by a degrees is 360 degrees; at this time, N arc-shaped PCB blank plates which are not yet fallen off and N waste plates which are already fallen off are formed;
step seven, controlling the lifting beam to descend so that each vacancy filling block and the cylindrical cutting knife descend synchronously until the lower end of the cylindrical cutting knife just contacts the PCB to be cut, wherein each vacancy filling block moves downwards just to each vacancy, when the vacancy filling blocks are in the vacancies, the two cambered outer side walls of the vacancy filling blocks are in sliding fit with the first cambered inner side wall and the second cambered inner side wall respectively, and any cambered PCB blank plate is limited by the two adjacent vacancy filling blocks;
step eight, the control lift roof beam continues descending and controls the second riser to rise simultaneously, make the absolute height of each vacancy filling block do not change simultaneously the cylindric cutting knife continue downstream, thereby make the cylindric cutting knife cut PCB board along the virtual line of cut, thereby make N slice arc form PCB blank board all drop, because the existence of each vacancy filling block, when the cylindric cutting knife cut PCB board along the virtual line of cut, the whole one-time that drops of N slice arc form PCB blank board can not take place strong displacement because of the torsional rotation that the cylindric cutting knife produced and cause the arc form PCB blank board that has formed to take place to damage.
Has the advantages that: according to the invention, the circular plate can be smoothly cut into the circular arc-shaped PCB, and then the cut circular arc-shaped PCBs are combined into a circular ring structure, so that the comprehensive plate utilization rate is higher than that of the traditional mode of cutting a whole circular ring.
Drawings
FIG. 1 is a schematic diagram illustrating a conventional circular PCB substrate cutting process;
FIG. 2 is a ring-shaped PCB substrate composed of a plurality of arc-shaped PCB substrates;
FIG. 3 is a schematic structural view of a circular PCB to be cut;
FIG. 4 is a first overall structural schematic diagram of the present apparatus;
FIG. 5 is a second overall structural schematic diagram of the present apparatus;
FIG. 6 is a third overall structural schematic diagram of the present apparatus;
FIG. 7 is a top view of the apparatus in a state;
FIG. 8 is a cross-sectional view of the present device;
FIG. 9 is a schematic view of the right part of FIG. 6 exploded in a vertical direction;
FIG. 10 is a schematic diagram after "step six" has ended;
FIG. 11 is a schematic view after "step seven" has ended;
FIG. 12 is a schematic diagram of the movement principle and feed path of the device;
FIG. 13 is a top view of the circular PCB board to be cut after step six;
FIG. 14 is a schematic view of the cylindrical cutter cutting the PCB to be cut along the virtual cutting line on the basis of FIG. 13;
fig. 15 is a schematic structural view of the waste plate which is removed after being hidden on the basis of fig. 14.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The PCB substrate of the existing annular LED ceiling lamp is a full circular ring, and in the cutting process of the PCB substrate with the full circular ring structure, a large circular plate in the middle as shown in figure 1 needs to be discarded, so that the plate is wasted; the applicant believes that the annular PCB substrate itself may be formed from a plurality of arcuate PCB panels assembled as shown in figure 2; therefore, a special mechanism for cutting the PCB into the arc-shaped PCB can be designed, and the comprehensive board utilization rate is higher.
The specific system structure is as shown in fig. 3 to 15, and the production system of the PCB substrate of the annular lamp comprises a circular rotary platform 22, wherein a central column 25 is coaxially arranged at the upper side axis of the circular rotary platform 22, and a vertical eccentric column 24 is arranged at the upper side eccentric position of the circular rotary platform 22;
the PCB cutting machine is characterized by further comprising a round PCB to be cut 14, wherein a center hole 26 is formed in the axis of the round PCB to be cut 14, and an eccentric hole 27 is formed in one side of the center hole 25; the central column 25 slides through the central hole 26 coaxially, the eccentric column 24 slides through the eccentric hole 27 coaxially, so that the circular to-be-cut PCB plate 14 rotates along with the circular rotary platform 22, and the cutting device further comprises a cutting unit, wherein the cutting unit can cut the circular to-be-cut PCB plate 14 into a plurality of arc-shaped PCB blank plates 29 distributed in a circumferential array manner.
The method is characterized in that: a plurality of arc-shaped cantilever supporting beams 15 distributed in a circumferential array are fixedly connected to the periphery of the circular rotary platform 22, and the upper surfaces of the arc-shaped cantilever supporting beams 15 are higher than the upper surface of the circular rotary platform 22, so that the upper surfaces of the arc-shaped cantilever supporting beams 15 are in supporting contact with the lower surface of the circular PCB to be cut 14;
the cutting unit is used for cutting the circular PCB plate 14 to be cut into a plurality of arc-shaped PCB blank plates 29 distributed in a circumferential array, and the top-view outlines of the arc-shaped PCB blank plates are respectively superposed with the top-view outlines of the arc-shaped cantilever supporting beams 15.
The mechanism is characterized by further comprising a mechanism base 17, wherein a vertical brake type stepping motor 90 is fixedly mounted on the mechanism base 17, and the upper end of an output rotating shaft 42 of the brake type stepping motor 90 is fixedly connected with the circular rotating platform 22 through the same axle center.
The cutting unit comprises a vertical bearing seat 40, a vertical rotary arm shaft 39 is rotatably arranged in the bearing seat 40 through a bearing 41, a horizontal rotary arm 38 is fixedly connected to the upper end of the rotary arm shaft 39, the tail end of the rotary arm 38 is fixedly connected with a horizontal arc-shaped beam 2, a plurality of transmission tooth bodies 1 are arrayed on the outer edge of the arc-shaped beam 2 at equal intervals, and the arc-shaped circle center of the arc-shaped beam 2 is overlapped with the axis of the rotary arm shaft 39; the downside fixed mounting of the circular arc 2 counterclockwise ends of roof beam has first milling cutter driver 3 and second milling cutter driver 19, still includes vertical first PCB cutting milling cutter 4 and second PCB cutting milling cutter 5, first milling cutter driver 3 and second milling cutter driver 19 drive respectively and connect first PCB cutting milling cutter 4 and second PCB cutting milling cutter 5.
A second stepping motor 18 is fixedly installed on the mechanism base 17, a motor output shaft 20 of the second stepping motor 18 is coaxially and synchronously connected with a transmission gear 21, and the transmission gear 21 is meshed with the plurality of transmission tooth bodies 1 on the arc-shaped beam 2.
Referring to fig. 12, the circle center of the circular PCB plate 14 to be cut is marked as a first circle center 31, and the arc-shaped circle center of the arc-shaped beam 2 is marked as a second circle center 30; setting a virtual circle 32, wherein the first circle center 31 is on the virtual circle 32, the center of the virtual circle 32 coincides with the second circle center 30, and the radius of the virtual circle 32 is recorded as R; a path of the first PCB cutting mill 4 revolving around the second circle center 30 is recorded as a first circular feed path 33, and a path of the second PCB cutting mill 5 revolving around the second circle center 30 is recorded as a second circular feed path 34; the first circular feed path 33 and the second circular feed path 34 have radii R1 and R2, respectively, and satisfy R-R1-R2-R; the first PCB cutting milling cutter 4 can cut a first circular arc hollow-out cut 35 on the circular PCB plate 14 to be cut along the movement of the first circular cutting path 33, and the second PCB cutting milling cutter 5 can cut a second circular arc hollow-out cut 36 on the circular PCB plate 14 to be cut along the movement of the second circular cutting path 34.
The cutting unit further comprises a lifter 9 fixedly mounted on a mechanism base 17, the top end of a lifting rod of the lifter 9 is fixedly connected with a lifting beam 7, a vertical cutting knife motor 8 is fixedly mounted on the lower side of the lifting beam 7, an output shaft 6 of the cutting knife motor 8 and the central column 25 are coaxial, the lower end of the central column 25 is coaxially connected with a cylindrical cutting knife 11, and the cylindrical cutting knife 11 synchronously rotates along with the output shaft 6; a plurality of cutting saw teeth 80 with downward tips are distributed at the lower end of the cylindrical cutting knife 11 along the circular contour in an equidistant array; the contour line of the vertical projection of the cylindrical cutter 11 on the circular PCB to be cut 14 is marked as a virtual cutting line 37; the lowering of the lifting beam 7 enables the cylindrical cutter 11 to cut the PCB board 14 along the virtual cutting line 37.
The cutting unit cuts a circular PCB plate 14 to be cut into a plurality of arc-shaped PCB blank plates 29 distributed in a circumferential array, a vacancy 97 which is communicated up and down is formed between any two adjacent arc-shaped PCB blank plates 29, and two arc-shaped inner side walls of the vacancy 97 are a first arc-shaped inner side wall 50.1 and a second arc-shaped inner side wall 50.2 respectively; a vacancy filling block 16 is arranged right above any vacancy 97, the vacancy filling block 16 can move downwards into the vacancy 97, and when the vacancy filling block 16 is in the vacancy 97, two cambered outer side walls of the vacancy filling block 16 are respectively in sliding fit with a first cambered inner side wall 50.1 and a second cambered inner side wall 50.2;
an annular lifting platform 12 is arranged on the periphery of the cutting knife motor 8, the lower side of the annular lifting platform 12 is fixedly connected with a plurality of vacancy filling blocks 16 through a plurality of support columns 13 respectively, the annular lifting platform 12 is connected with the lifting beam 7 through a second lifter 10, and the annular lifting platform 12 and the lifting beam 7 can do relative lifting motion under the action of the second lifter 10.
The working principle and the working method of the scheme are as follows:
the working method of the production system of the PCB substrate of the annular lamp comprises the following steps:
the method comprises the following steps:
step one, a brake type stepping motor 90 is in a brake state in an initial state, and the circular PCB to be cut 14 cannot rotate by taking a first circle center 31 as a center; in order to avoid movement interference in the subsequent cutting process, the lifter 9 is controlled to ascend until the cylindrical cutting knife 11 and each vacancy filling block 16 are higher than the circular arc-shaped beam 2, and the first PCB cutting milling cutter 4 and the second PCB cutting milling cutter 5 are outside the outline of the circular PCB to be cut 14 in the initial state, as shown in figure 12;
step two, controlling the first milling cutter driver 3 and the second milling cutter driver 19 to enable the first PCB cutting milling cutter 4 and the second PCB cutting milling cutter 5 to rotate along the axes of the first PCB cutting milling cutter and the second PCB cutting milling cutter at the cutting speed of 180-270 m/min and maintain the first PCB cutting milling cutter and the second PCB cutting milling cutter in the subsequent steps;
step three, controlling the second stepping motor 18 to rotate in the forward direction, so that the transmission gear 21 drives the arc-shaped beam 2 to rotate anticlockwise around the second circle center 30 under the action of meshing transmission, and accordingly, the first PCB cutting milling cutter 4 and the second PCB cutting milling cutter 5 feed along the first circular feed path 33 and the second circular feed path 34 in the anticlockwise direction, respectively, when the first PCB cutting milling cutter 4 and the second PCB cutting milling cutter 5 feed along the first circular feed path 33 and the second circular feed path 34 in the anticlockwise direction to the contour of the circular PCB plate 14 to be cut, the first PCB cutting milling cutter 4 and the second PCB cutting milling cutter 5 will gradually cut a first arc hollow-out kerf 35 and a second arc hollow-out kerf 36 on the circular PCB plate 14 to be cut, until the first PCB cutting milling cutter 4 and the second PCB cutting milling cutter 5 simultaneously contact a virtual cutting line 37 at a top view angle, a first circular arc hollow-out kerf 35 and a second circular arc hollow-out kerf 36 are cut, an arc-shaped PCB blank plate 29 which is not fallen off is formed between the adjacent first circular arc hollow-out kerf 35 and the adjacent second circular arc hollow-out kerf 36, and at the moment, the second stepping motor 18 is controlled to reversely rotate, so that the transmission gear 21 drives the circular arc beam 2 to clockwise rotate by taking the second circle center 30 as the center under the action of meshing transmission, and the first PCB cutting milling cutter 4 and the second PCB cutting milling cutter 5 are retreated along the clockwise direction of the first circular feed path 33 and the second circular feed path 34 respectively until the first PCB cutting milling cutter 4 and the second PCB cutting milling cutter 5 return to the outside of the outline of the circular PCB to be cut 14 again;
the first arc-shaped hollowed-out lancing 35 and the second arc-shaped hollowed-out lancing 36 formed at this time are respectively marked as a first arc-shaped hollowed-out lancing 35.1 and a second arc-shaped hollowed-out lancing 36.1; the arc-shaped PCB blank plate 29 formed at this time is marked as a first arc-shaped PCB blank plate 29.1;
step four, controlling the brake type stepping motor 90 to operate, and enabling the circular PCB to be cut 14 to rotate clockwise by a degrees by taking the first circle center 31 as a center;
step five, repeating the step three once;
after repeating step three once: the first PCB cutting milling cutter 4 and the second PCB cutting milling cutter 5 cut a first arc hollow-out kerf 35 and a second arc hollow-out kerf 36 on the circular PCB to be cut 14 again, and the formed first arc hollow-out kerf 35 and the second arc hollow-out kerf 36 are respectively marked as a first arc hollow-out kerf 35.2 and a second arc hollow-out kerf 36.2; the arc-shaped PCB blank plate 29 formed at this time is marked as a second arc-shaped PCB blank plate 29.2; the intersection point formed by the first second arc-shaped hollow joint slit 36.1 and the second first arc-shaped hollow joint slit 35.2 is marked as a slit intersection point 70, at this time, a waste plate 28 can automatically fall off between the first second arc-shaped hollow joint slit 36.1 and the second first arc-shaped hollow joint slit 35.2, and after the waste plate 28 falls off, a through-going empty position 97 is formed between two adjacent arc-shaped PCB blank plates 29;
step six, repeating the step four and the step five for N-2 times, and meeting the condition that the N multiplied by a degrees is 360 degrees; at this time, N arc-shaped PCB blank plates 29 which are not fallen yet and N waste plates 28 which are fallen are formed;
step seven, controlling the lifting beam 7 to descend to enable each vacancy filling block 16 and the cylindrical cutting knife 11 to descend synchronously until the lower end of the cylindrical cutting knife 11 just contacts the PCB 14 to be cut, wherein each vacancy filling block 16 moves downwards just to each vacancy 97, when each vacancy filling block 16 is in the vacancy 97, the outer side walls of two cambered surfaces of each vacancy filling block 16 are in sliding fit with the first arc-shaped inner side wall 50.1 and the second arc-shaped inner side wall 50.2 respectively, and at the moment, any arc-shaped PCB blank board 29 is limited by the two adjacent vacancy filling blocks 16;
step eight, control the lifting beam 7 to continue descending and control the second riser 10 to rise at the same time, make the cylindrical cutter 11 continue the downstream while the absolute height of each vacancy filling block 16 does not change, thereby make the cylindrical cutter 11 cut PCB board 14 to be cut along the virtual cut line 37, thereby make N slice arc shape PCB blank board 29 all drop, because the existence of each vacancy filling block 16, when the cylindrical cutter 11 cuts PCB board 14 to be cut along the virtual cut line 37, the arc shape PCB blank board 29 that has formed can not be caused because the strong displacement takes place for the rotational torque that cylindrical cutter 11 produced in the moment that N slice arc shape PCB blank board 29 all drops.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (9)
1. Production system of PCB base plate of cyclic annular lamp, its characterized in that: the device comprises a circular rotary platform (22), wherein a central column (25) is coaxially arranged at the axial center of the upper side surface of the circular rotary platform (22), and a vertical eccentric column (24) is arranged at the eccentric position of the upper side surface of the circular rotary platform (22);
the PCB cutting machine is characterized by further comprising a round PCB to be cut (14), wherein a center hole (26) is formed in the axis of the round PCB to be cut (14), and an eccentric hole (27) is formed in one side of the center hole (26); the central column (25) coaxially slides through the central hole (26), the eccentric column (24) coaxially slides through the eccentric hole (27), so that the circular PCB to be cut (14) rotates along with the circular rotating platform (22), and the PCB cutting machine further comprises a cutting unit which can cut the circular PCB to be cut (14) into a plurality of PCB blank plates (29) distributed in an arc shape in a circumferential array;
the cutting unit is used for cutting a circular PCB (printed circuit board) to be cut into a plurality of arc-shaped PCB blank plates (29) distributed in a circumferential array manner, a vacancy (97) which is communicated up and down is formed between any two adjacent arc-shaped PCB blank plates (29), and two arc-shaped inner side walls of the vacancy (97) are a first arc-shaped inner side wall (50.1) and a second arc-shaped inner side wall (50.2) respectively; a vacancy filling block (16) is arranged right above any vacancy (97), the vacancy filling block (16) can move downwards into the vacancy (97), when the vacancy filling block (16) is located in the vacancy (97), two arc-shaped outer side walls of the vacancy filling block (16) are in sliding fit with a first arc-shaped inner side wall (50.1) and a second arc-shaped inner side wall (50.2) respectively.
2. The production system of the PCB substrate of the ring lamp according to claim 1, wherein: the method is characterized in that: a plurality of arc-shaped cantilever supporting beams (15) distributed in a circumferential array are fixedly connected to the periphery of the circular rotary platform (22), and the upper surfaces of the arc-shaped cantilever supporting beams (15) are higher than the upper surface of the circular rotary platform (22), so that the upper surfaces of the arc-shaped cantilever supporting beams (15) are in supporting contact with the lower surface of the circular PCB (14) to be cut;
the cutting unit is used for cutting a circular PCB (printed circuit board) to be cut into a plurality of arc-shaped PCB blank plates (29) distributed in a circumferential array, and the top-view profiles of the arc-shaped PCB blank plates are respectively superposed with the top-view profiles of the arc-shaped cantilever supporting beams (15).
3. The production system of the PCB substrate for ring lamps according to claim 2, wherein: the mechanism is characterized by further comprising a mechanism base (17), wherein a vertical brake type stepping motor (90) is fixedly mounted on the mechanism base (17), and the upper end of an output rotating shaft (42) of the brake type stepping motor (90) is fixedly connected with the circular rotating platform (22) through the same axis.
4. The production system of the PCB substrate of the ring-shaped lamp according to claim 3, wherein: the cutting unit comprises a vertical bearing seat (40), a vertical rotary arm shaft (39) is rotatably arranged in the bearing seat (40) through a bearing (41), a horizontal rotary arm (38) is fixedly connected to the upper end of the rotary arm shaft (39), the tail end of the rotary arm (38) is fixedly connected with a horizontal arc-shaped beam (2), a plurality of transmission tooth bodies (1) are arranged on the outer edge of the arc-shaped beam (2) in an equidistant array, and the arc-shaped circle center of the arc-shaped beam (2) is overlapped with the axis of the rotary arm shaft (39); circular arc roof beam (2) downside fixed mounting of counterclockwise needle end has first milling cutter driver (3) and second milling cutter driver (19), still includes vertical first PCB cutting milling cutter (4) and second PCB cutting milling cutter (5), first milling cutter driver (3) and second milling cutter driver (19) drive connection first PCB cutting milling cutter (4) and second PCB cutting milling cutter (5) respectively.
5. The production system of the PCB substrate of the annular lamp according to claim 4, wherein: the mechanism is characterized in that a second stepping motor (18) is fixedly mounted on the mechanism base (17), a motor output shaft (20) of the second stepping motor (18) is coaxially and synchronously connected with a transmission gear (21), and the transmission gear (21) is meshed with a plurality of transmission tooth bodies (1) on the arc-shaped beam (2).
6. The production system of the PCB substrate of the ring-shaped lamp according to claim 5, wherein: recording the circle center of a circular PCB (14) to be cut as a first circle center (31), and recording the arc-shaped circle center of the arc-shaped beam (2) as a second circle center (30); setting a virtual circle (32), wherein the first circle center (31) is on the virtual circle (32), the circle center of the virtual circle (32) is superposed with the second circle center (30), and the radius of the virtual circle (32) is marked as R; the path of the first PCB cutting milling cutter (4) rotating around the second circle center (30) is recorded as a first circular feed path (33), and the path of the second PCB cutting milling cutter (5) rotating around the second circle center (30) is recorded as a second circular feed path (34); the first circular feed path (33) and the second circular feed path (34) have radii R1 and R2, respectively, and satisfy R-R1-R2-R; the first PCB cutting milling cutter (4) can cut a first circular arc hollowed-out kerf (35) on a circular PCB plate (14) to be cut through movement along a first circular cutting path (33), and the second PCB cutting milling cutter (5) can cut a second circular arc hollowed-out kerf (36) on the circular PCB plate (14) to be cut through movement along a second circular cutting path (34).
7. The production system of the PCB substrate of the ring-shaped lamp according to claim 5, wherein: the cutting unit further comprises a lifter (9) fixedly mounted on a mechanism base (17), the top end of a lifting rod of the lifter (9) is fixedly connected with a lifting beam (7), a vertical cutting knife motor (8) is fixedly mounted on the lower side of the lifting beam (7), an output shaft (6) of the cutting knife motor (8) and the central column (25) are coaxial, the lower end of the central column (25) is coaxially connected with a cylindrical cutting knife (11), and the cylindrical cutting knife (11) synchronously rotates along with the output shaft (6); a plurality of cutting saw teeth (80) with downward tips are distributed at the lower end of the cylindrical cutting knife (11) along the circular contour in an equidistant array manner; the contour line of the vertical projection of the cylindrical cutter (11) on the circular PCB (14) to be cut is marked as a virtual cutting line (37); the descending of the lifting beam (7) enables the cylindrical cutting knife (11) to cut the PCB (14) along the virtual cutting line (37).
8. The production system of the PCB substrate of the ring-shaped lamp according to claim 7, wherein: the periphery of cutting knife motor (8) is provided with cyclic annular lift platform (12), the downside of cyclic annular lift platform (12) is through a plurality of support columns (13) fixed a plurality of vacancy filling blocks (16) of connecting respectively, cyclic annular lift platform (12) pass through second riser (10) with lift beam (7) are connected, relative elevating movement can be done with lift beam (7) in cyclic annular lift platform (12) under the effect of second riser (10).
9. The operating method of the production system of the PCB substrate for ring lamps according to claim 8, wherein:
the method comprises the following steps:
step one, a brake type stepping motor (90) is in a brake state in an initial state, and the circular PCB (14) to be cut cannot rotate by taking a first circle center (31) as a center; in order to avoid movement interference in the subsequent cutting process, the lifter (9) is controlled to ascend until the cylindrical cutting knife (11) and each vacancy filling block (16) are higher than the circular arc-shaped beam (2), and the first PCB cutting milling cutter (4) and the second PCB cutting milling cutter (5) are outside the outline of the circular PCB to be cut (14) in the initial state;
step two, controlling the first milling cutter driver (3) and the second milling cutter driver (19) to enable the first PCB cutting milling cutter (4) and the second PCB cutting milling cutter (5) to rotate along the axis of the first PCB cutting milling cutter and the second PCB cutting milling cutter at the cutting speed of 180-270 m/min and maintain the first PCB cutting milling cutter and the second PCB cutting milling cutter in the subsequent steps;
step three, controlling a second stepping motor (18) to rotate in the positive direction, enabling a transmission gear (21) to drive the arc-shaped beam (2) to rotate anticlockwise around a second circle center (30) under the action of meshing transmission, so that a first PCB cutting milling cutter (4) and a second PCB cutting milling cutter (5) feed along the anticlockwise directions of a first circular feed path (33) and a second circular feed path (34) respectively, when the first PCB cutting milling cutter (4) and the second PCB cutting milling cutter (5) feed into the outline of the circular PCB to be cut (14) along the anticlockwise directions of the first circular feed path (33) and the second circular feed path (34) respectively, the first PCB cutting milling cutter (4) and the second PCB cutting milling cutter (5) can gradually cut a first arc hollow part (35) and a second arc hollow part (36) on the circular PCB to be cut (14), until the first PCB cutting milling cutter (4) and the second PCB cutting milling cutter (5) simultaneously contact the virtual cutting line (37) under the overlooking visual angle, a first arc hollow-out kerf (35) and a second arc hollow-out kerf (36) are cut, an arc-shaped PCB blank plate (29) which is not fallen off is formed between the adjacent first arc hollow-out kerf (35) and the adjacent second arc hollow-out kerf (36), at the moment, the second step-by-step motor (18) is controlled to reversely rotate, the transmission gear (21) drives the arc-shaped beam (2) to clockwise rotate by taking the second circle center (30) as the center under the action of meshing transmission, so that the first PCB cutting milling cutter (4) and the second PCB cutting milling cutter (5) respectively retreat along the clockwise direction of the first circular feed path (33) and the second circular feed path (34), and the first PCB cutting milling cutter (4) and the second PCB cutting milling cutter (5) return to the outer contour of the circular PCB to-be-cut plate (14) again until the first PCB cutting milling cutter (4) and the second PCB cutting cutter (5) return to the outer contour of the circular to-be-cut plate (14) A section;
the first arc hollowed-out lancing (35) and the second arc hollowed-out lancing (36) formed at the moment are respectively marked as a first arc hollowed-out lancing (35.1) and a second arc hollowed-out lancing (36.1); the arc-shaped PCB blank plate (29) formed at this time is marked as a first arc-shaped PCB blank plate (29.1);
controlling a brake type stepping motor (90) to operate, and enabling the circular PCB (14) to be cut to rotate clockwise for a degrees by taking a first circle center (31) as a center;
step five, repeating the step three once;
after repeating step three once: a first circular arc hollowed-out kerf (35) and a second circular arc hollowed-out kerf (36) are cut out on the circular PCB plate (14) to be cut by the first PCB cutting milling cutter (4) and the second PCB cutting milling cutter (5) again, and the formed first circular arc hollowed-out kerf (35) and the formed second circular arc hollowed-out kerf (36) are marked as a second first circular arc hollowed-out kerf (35.2) and a second circular arc hollowed-out kerf (36.2) respectively; the formed arc-shaped PCB blank plate (29) is marked as a second arc-shaped PCB blank plate (29.2); the intersection point formed by the first circular arc hollowed-out kerf (36.1) and the second circular arc hollowed-out kerf (35.2) is marked as a kerf intersection point (70), at the moment, a waste plate (28) can automatically fall off between the first circular arc hollowed-out kerf (36.1) and the second circular arc hollowed-out kerf (35.2), and after the waste plate (28) falls off, a through vacancy (97) is formed between two adjacent arc-shaped PCB blank plates (29);
step six, repeating step four + step five' N-2 times, and satisfying (N × a) ° 360 °; at this time, N arc-shaped PCB blank plates (29) which are not fallen off and N waste plates (28) which are fallen off are formed;
seventhly, controlling the lifting beam (7) to descend synchronously to enable each vacancy filling block (16) and the cylindrical cutting knife (11) to descend until the lower end of the cylindrical cutting knife (11) just contacts the PCB (14) to be cut, enabling each vacancy filling block (16) to move downwards into each vacancy (97), and enabling two cambered outer side walls of each vacancy filling block (16) to be in sliding fit with a first cambered inner side wall (50.1) and a second cambered inner side wall (50.2) respectively when each vacancy filling block (16) is in the vacancy (97), wherein any cambered PCB blank plate (29) is limited by two adjacent vacancy filling blocks (16);
step eight, the second lifter (10) is controlled to ascend while the lifting beam (7) is controlled to continue descending, the cylindrical cutting knife (11) continues to move downwards while the absolute height of each vacancy filling block (16) is not changed, and therefore the cylindrical cutting knife (11) cuts the PCB (14) to be cut along the virtual cutting line (37), all the N arc-shaped PCB blanks (29) fall off, due to the existence of the N vacancy filling blocks (16), when the cylindrical cutting knife (11) cuts the PCB (14) to be cut along the virtual cutting line (37), the formed arc-shaped PCB blanks (29) cannot be damaged due to strong displacement of rotating torque generated by the cylindrical cutting knife (11) at the moment that all the N arc-shaped PCB blanks (29) fall off.
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| CN2131674Y (en) * | 1992-05-28 | 1993-05-05 | 蔡开炎 | Cutting machine with cutting disc |
| JP3523552B2 (en) * | 1999-01-21 | 2004-04-26 | 松下電器産業株式会社 | Cutting device, processing device, and cutting method |
| DE112015004330B4 (en) * | 2014-09-23 | 2023-08-24 | Ledvance Llc | Process for forming a printed circuit board strip |
| CN108162087A (en) * | 2017-12-29 | 2018-06-15 | 重庆聚伯雅科技有限公司 | A kind of cutting method for plank |
| CN110545623B (en) * | 2019-08-28 | 2022-04-29 | 深圳市汉龙赋科技有限公司 | Production process system and process flow method of PCB (printed circuit board) |
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