CN110621119B

CN110621119B - PCB (printed circuit board) multilayer overlapping type punching process equipment and punching method thereof

Info

Publication number: CN110621119B
Application number: CN201910897470.5A
Authority: CN
Inventors: 宋志龙
Original assignee: Shenzhen Longzhan Technology Co ltd
Current assignee: Shenzhen Longzhan Technology Co ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2022-05-10
Anticipated expiration: 2039-09-23
Also published as: CN110621119A

Abstract

The invention discloses PCB (printed circuit board) multilayer overlapped punching process equipment, which comprises a PCB carrier to be punched, wherein a plurality of horizontal rectangular PCBs to be punched are arranged on the PCB carrier to be punched in an up-down overlapped mode, and overlooking outer contours of the PCBs to be punched are overlapped; a drilling mechanism is arranged above the pcb carrier for the board to be drilled; the drilling mechanism can be used for drilling a plurality of pcb plates to be drilled on the pcb plate carrier; the left bending-resistant cross beam and the right bending-resistant cross beam of the invention play a role in supporting the board to be punched of the pcb above, and effectively prevent the board to be punched of the pcb from being bent due to the jacking pressure of the rotary drill bit.

Description

PCB (printed circuit board) multilayer overlapping type punching process equipment and punching method thereof

Technical Field

The invention belongs to the field of pcb process equipment.

Background

Treat the polylith pcb and once only bore hole after the board that punches overlaps and can show improvement drilling efficiency, but polylith pcb can cause the thickness to increase after treating the board that punches overlap, and the smear metal piece can not in time be discharged, causes the hole site to form a large amount of burrs, the not high scheduling problem of precision.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the PCB multi-layer overlapped punching process equipment capable of timely discharging scraps and the punching method thereof.

The technical scheme is as follows: in order to achieve the purpose, the multilayer overlapped punching process equipment for the PCB comprises a PCB carrier to be punched, wherein a plurality of horizontal rectangular PCBs to be punched are arranged on the PCB carrier to be punched in an up-and-down overlapped mode, and overlooking outer contours of the PCBs to be punched are overlapped; a drilling mechanism is arranged above the pcb carrier for the board to be drilled; drilling mechanism can wait to punch a plurality of pcb on the board carrier to the pcb and wait to punch the board and punch.

Further, still include the horizontally carrier slide rail, the pcb is treated the board carrier setting of punching and is in the carrier spout on the carrier slide rail, drive arrangement can drive the pcb is treated the board carrier of punching and is followed the displacement about the slide rail direction of carrier spout.

Further, each pcb of waiting on the board carrier of punching is treated to the pcb and is treated the board equidistance setting of punching, adjacent two pcbs of waiting on the board carrier of punching are treated the interval between the board of punching and are formed the chip removal layer.

Furthermore, the drilling mechanism comprises a supporting upright post which is fixedly and vertically installed, a horizontal cantilever beam is fixedly installed at the upper end of the supporting upright post, and the cantilever beam is positioned right above the pcb carrier for the board to be drilled; the length direction of the cantilever beam is vertical to the extending direction of the carrier sliding groove; an electric guide rail is arranged on the lower side of the cantilever beam in the extension direction, a sliding block capable of performing translational displacement along the length direction of the cantilever beam is arranged on the electric guide rail, and a vertical telescopic cylinder device is arranged on the sliding block; the telescopic cylinder device can move in a translation manner along with the sliding block along the length direction of the cantilever beam; the tail end of a telescopic push rod of the telescopic cylinder device is fixedly provided with a vertical drilling machine, and a rotary drill bit of the drilling machine is arranged downwards; the rotary drill bit corresponds to a pcb to-be-punched plate on the pcb to-be-punched plate carrier; the extension movement of the telescopic push rod can enable the rotary drill bit to feed downwards, and the board to be punched of each layer of pcb is punched one by one.

Furthermore, the pcb carrier to be punched comprises a bottom sliding plate, and the bottom sliding plate can translate left and right in the sliding groove of the carrier along the direction of the sliding rail of the carrier sliding rail; a left side plate and a right side plate are symmetrically and vertically fixedly arranged on two sides of the bottom sliding plate, and a plurality of transverse pcb board clamping grooves to be punched are formed in the inner sides of the left side plate and the right side plate at equal intervals; and two side edges of the pcb board to be punched are respectively and limitedly arranged in the corresponding pcb board clamping grooves to be punched on the left side plate and the right side plate.

Furthermore, bending-resistant supporting mechanisms are arranged in chip removal layers formed between two adjacent pcb plates to be punched respectively, each bending-resistant supporting mechanism comprises a horizontal left bending-resistant cross beam and a horizontal right bending-resistant cross beam, the left bending-resistant cross beam and the right bending-resistant cross beam are perpendicular to the length direction of the carrier slide rail, the gap between the left bending-resistant cross beam and the right bending-resistant cross beam is larger than the outer diameter of the rotary drill bit, and the rotary drill bit can downwards penetrate through the gap between the left bending-resistant cross beam and the right bending-resistant cross beam; the upper ends of the left bending-resistant cross beam and the right bending-resistant cross beam are in sliding contact with the lower side surface of the upper pcb board to be punched; the lower ends of the left bending-resistant cross beam and the right bending-resistant cross beam are kept in a gap with a pcb to-be-punched plate below; and two cross beam supporting columns are fixedly installed at one side part of the carrier slide rail, and are respectively connected with one end of each left bending-resistant cross beam and one end of each right bending-resistant cross beam through a plurality of connecting beam fixed supports.

Furthermore, the left bending-resistant cross beam and the right bending-resistant cross beam are both of rigid hollow column structures with the shaft sections of C, and a left air outlet groove extending along the axis direction is formed at the C-shaped opening of the left bending-resistant cross beam; a right air outlet groove extending along the axial direction is formed at the C-shaped opening of the right bending-resistant cross beam; the left air outlet groove on the left bending-resistant cross beam is opposite to the right air outlet groove on the right bending-resistant cross beam; a left piston channel is arranged in the left bending-resistant cross beam, and a right piston channel is arranged in the right bending-resistant cross beam; a left piston group is arranged in the left piston channel in a sliding manner, and a right piston group is arranged in the right piston channel;

the left piston group and the right piston group respectively comprise a front piston and a tail piston which are coaxially arranged, a movable air chamber is formed between the front piston and the tail piston, a plurality of hard linkage rods are distributed in the movable air chamber in a circumferential array manner, and two ends of each linkage rod are respectively fixedly connected with the front piston and the tail piston;

a left air outlet is formed in the left air outlet groove of the movable air chamber formed in the left piston set, and pressure storage air in the movable air chamber formed in the left piston set can be ejected out through the left air outlet;

a right air outlet is formed at the right air outlet groove of the movable air chamber formed in the right piston group, and pressure accumulation air in the movable air chamber formed in the right piston group can be ejected out through the right air outlet;

the tail piston of each left piston group is integrally and coaxially connected with a left piston push rod, and the tail piston of each right piston group is integrally and coaxially connected with a right piston push rod; air guide channels are arranged in the left piston push rod and the right piston push rod; the air outlet end of the air guide channel in the left piston push rod is communicated with a movable air chamber formed in the left piston group; the air outlet end of the air guide channel in the right piston push rod is communicated with a movable air chamber formed in the right piston group;

the gas distribution box body is internally provided with a distribution cavity, the other ends of the left piston push rods and the right piston push rods are fixedly connected to the gas distribution box body, and the gas inlet end of each gas guide channel is communicated with the distribution cavity in the gas distribution box body; the air guide device is characterized by also comprising an air guide hose, wherein the air outlet end of the air guide hose is communicated with a flow dividing cavity in the air flow dividing box body, and the air inlet end of the air guide hose is connected with an air pump;

a shunt box sliding block is fixedly connected to the lower side of the gas shunt box body; still include the horizontally second slide rail, be provided with the second spout along length direction on the second slide rail, the reposition of redundant personnel case slider slides and sets up in the second spout, drive arrangement can drive the reposition of redundant personnel case slider is followed the extending direction of second spout slides, the length direction of second slide rail with the carrier slide rail is perpendicular.

Further, the punching process of the PCB multi-layer overlapped punching process equipment comprises the following steps:

firstly, a plurality of pcb to-be-punched boards are installed on a pcb to-be-punched board carrier in a limiting mode in an overlapping mode of an upper space and a lower space, overlooking outer contours of the pcb to-be-punched boards installed on the pcb to-be-punched board carrier are overlapped, a chip removal layer is formed at a space between every two adjacent pcb to-be-punched boards, and the tooling process of the pcb to-be-punched boards is completed;

driving the telescopic cylinder device to perform translational displacement along the length direction of the cantilever beam along with the sliding block by the driving device, and further enabling the rotary drill bit to perform forward and backward translational displacement along the length direction of the cantilever beam along with the telescopic cylinder device; meanwhile, the driving device controls the pcb carrier to be punched to move left and right along the carrier sliding groove, so that a plurality of pcb carriers to be punched on the pcb carrier to be punched are displaced left and right; the left-right translational displacement of the pcb board to be punched is matched with the front-back translational displacement of the rotary drill bit, so that the rotary drill bit can correspond to any preset punching position on the pcb board to be punched; when the rotary drill bit corresponds to a preset punching position, the translation of the pcb carrier for the board to be punched and the translation of the rotary drill bit are suspended;

in the step, because the left bending-resistant cross beam and the right bending-resistant cross beam are fixedly installed, and the left bending-resistant cross beam and the right bending-resistant cross beam cannot generate position change in the process of left-right translational displacement of the board to be punched of the pcb, the left bending-resistant cross beam and the right bending-resistant cross beam can generate relative sliding with the board to be punched of the pcb in the process of left-right translational displacement of the board to be punched of the pcb, so that an extension line of the rotary drill always downwards passes through a gap formed between the left bending-resistant cross beam and the right bending-resistant cross beam, and the left bending-resistant cross beam and the right bending-resistant cross beam cannot interfere with the feeding motion of the rotary drill all the time;

controlling a telescopic cylinder device to enable a telescopic push rod to drive a drilling machine and a rotary drill bit to move downwards until the lower end of the rotary drill bit contacts the upper side face of the uppermost pcb to-be-punched board;

driving a flow distribution box sliding block and a gas flow distribution box body to displace along a second sliding rail direction by a driving device, so that a left piston group and a right piston group synchronously displace along a left piston channel and a right piston channel respectively, a movable air chamber in the left piston group and a movable air chamber in the right piston group synchronously displace along the left piston group and the right piston group, a left air outlet and a right air outlet synchronously displace along the left piston group and the right piston group, and a downward extension line of a rotary drill bit is just clamped between the left air outlet and the right air outlet;

controlling a drilling machine to run, further enabling a rotary drill bit to rotate at a high speed, and controlling a telescopic cylinder device to enable a telescopic push rod to drive the drilling machine and the rotary drill bit to slowly displace downwards, and as the rotary drill bit continues to slowly feed downwards, further enabling the rotary drill bit to drill the uppermost pcb to be punched, wherein in the process that the rotary drill bit drills the uppermost pcb to be punched, the rotary drill bit can apply a downward jacking force to the uppermost pcb to be punched, so that the pcb to be punched is easily deformed, and the problem of low drilling precision is caused; at the moment, the left bending-resistant cross beam and the right bending-resistant cross beam play a role in supporting the pcb board to be punched above, so that the pcb board to be punched is effectively prevented from being bent due to the jacking pressure of the rotary drill bit; when the through hole on the uppermost pcb to-be-punched board is drilled by the rotary drill, a large amount of cutting chips can be generated on and near the rotary drill which penetrates through the uppermost pcb to-be-punched board, and at the moment, the rotary drill generates heat due to friction, so that the drilling quality of the next pcb to-be-punched board can be influenced due to the fact that the large amount of cutting chips are not timely discharged, hole burrs are easily generated due to the chips, and the product quality is finally influenced; starting an air pump on the air guide hose to continuously guide pressurized air into the air distribution box body through the air guide hose, and finally enabling the left air outlet and the right air outlet to spray the pressurized air at a high speed; at the moment, the rotary drill bit penetrating through the uppermost pcb to-be-punched plate is just clamped between the left air outlet and the right air outlet, so that high-speed airflow is generated nearby the rotary drill bit, and then thermal cutting chips nearby the rotary drill bit are rapidly taken away, so that the upper part and the nearby part of the rotary drill bit penetrating through the uppermost pcb to-be-punched plate are always in a chip-free state, and the chip generated on the upper pcb to-be-punched plate is prevented from influencing the drilling of the next pcb to-be-punched plate; as the rotary drill bit continues to slowly feed downwards, the rotary drill bit finally drills holes on all the pcb boards to be punched in sequence for the first time;

controlling a telescopic cylinder device to enable a telescopic push rod to drive a drilling machine and a rotary drill bit to move upwards so as to finish the tool retracting action of primary drilling; and then finding another predetermined puncturing position according to step two.

Has the advantages that: the left bending-resistant cross beam and the right bending-resistant cross beam play a supporting role for the board to be punched of the pcb above, and the board to be punched of the pcb is effectively prevented from being bent due to the jacking pressure of the rotary drill bit; the rotary drill bit penetrating through the uppermost pcb board to be punched is exactly clamped between the left air outlet and the right air outlet, so that high-speed airflow is generated near the rotary drill bit, and then cutting chips of heat near the rotary drill bit are quickly taken away, so that the rotary drill bit penetrating through the uppermost pcb board to be punched and the position near the rotary drill bit are always in a chip-free state; the chip chippings generated on the previous pcb board to be punched are prevented from influencing the drilling of the next pcb board to be punched.

Drawings

FIG. 1 is a schematic view of the overall structure of the device;

FIG. 2 is a second schematic view of the overall construction of the apparatus;

FIG. 3 is a schematic view of the apparatus without pcb blanks mounted on pcb carriers to be punched;

FIG. 4 is a schematic view of a pcb board carrier to be punched;

FIG. 5 is a schematic sectional view of a pcb carrier with a pcb to-be-punched plate attached thereto;

FIG. 6 is an enlarged schematic view at 91 of FIG. 3;

FIG. 7 is an enlarged schematic view at 92 of FIG. 3;

FIG. 8 is a schematic view of a rotary drill bit passing through all pcb boards to be punched in sequence;

FIG. 9 is an enlarged partial schematic view of the right piston set in the right moment beam;

fig. 10 is a schematic view of the cut-away structure of fig. 9.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The structure of the scheme is introduced as follows: the PCB multi-layer overlapped punching process equipment shown in the attached figures 1 to 10 is characterized in that: the punching device comprises a pcb carrier 8 for the board to be punched, wherein a plurality of horizontal rectangular boards 3 to be punched are arranged on the pcb carrier 8 in an up-and-down overlapping mode, and overlooking outer contours of the boards 3 to be punched are overlapped; a drilling mechanism is arranged above the pcb carrier 8 to be drilled with holes; drilling mechanism can wait to punch a plurality of pcb on the board carrier 8 that punches to the pcb and wait to punch 3 and punch.

Still include horizontally carrier slide rail 2, the pcb is treated the setting of punching board carrier 8 and is in carrier spout 9 on the carrier slide rail 2, drive arrangement can drive the pcb is treated punching board carrier 8 and is followed displacement about carrier spout 9's the slide rail direction.

Each pcb of waiting on the board carrier 8 that punches of pcb waits to punch 3 equidistance settings of board, adjacent two pcbs of waiting on the board carrier 8 that punches of pcb wait to punch the interval formation chip removal layer 33 between the board 3.

The drilling mechanism comprises a supporting upright post 16 which is fixedly and vertically installed, a horizontal cantilever beam 15 is fixedly installed at the upper end of the supporting upright post 16, and the cantilever beam 15 is positioned right above the pcb carrier 8 to be drilled; the length direction of the cantilever beam 15 is vertical to the extending direction of the carrier sliding groove 9; an electric guide rail is arranged on the lower side of the cantilever beam 15 in the extension direction, a sliding block capable of performing translational displacement along the length direction of the cantilever beam 15 is arranged on the electric guide rail, and a vertical telescopic cylinder device 14 is arranged on the sliding block; the telescopic cylinder device 14 can move in a translational manner along the length direction of the cantilever beam 15 along with the sliding block; the tail end of a telescopic push rod 13 of the telescopic cylinder device 14 is fixedly provided with a vertical drilling machine 10, and a rotary drill bit 12 of the drilling machine 10 is arranged downwards; the rotary drill bit 12 corresponds to the pcb to be punched sheet 3 on the pcb to be punched sheet carrier 8; the extension movement of the telescopic rod 13 enables the rotary drill 12 to feed downward, so as to sequentially punch holes in the sheets 3 to be punched of each layer pcb.

The pcb board to be punched carrier 8 comprises a bottom sliding plate 29, and the bottom sliding plate 29 can translate left and right in the carrier sliding groove 9 along the sliding rail direction of the carrier sliding rail 2; a left side plate 28 and a right side plate 30 are symmetrically and vertically fixedly arranged on two sides of the bottom sliding plate 29, and a plurality of transverse pcb board clamping grooves 34 to be punched are arranged on the inner sides of the left side plate 28 and the right side plate 30 at equal intervals; and two side edges of each pcb board 3 to be punched are respectively limited and arranged in corresponding pcb board clamping grooves 34 to be punched on the left side plate 28 and the right side plate 30.

Bending-resistant supporting mechanisms are arranged in chip removal layers 33 formed between two adjacent pcb boards 3 to be punched respectively, each bending-resistant supporting mechanism comprises a horizontal left bending-resistant cross beam 18 and a horizontal right bending-resistant cross beam 19, the left bending-resistant cross beam 18 and the right bending-resistant cross beam 19 are both vertical to the length direction of the carrier slide rail 2, the gap between the left bending-resistant cross beam 18 and the right bending-resistant cross beam 19 is larger than the outer diameter of the rotary drill bit 12, and the rotary drill bit 12 can downwards penetrate through the gap between the left bending-resistant cross beam 18 and the right bending-resistant cross beam 19; the upper ends of the left bending-resistant cross beam 18 and the right bending-resistant cross beam 19 are in sliding contact with the lower side surface of the upper pcb board 3 to be punched; the lower ends of the left bending-resistant cross beam 18 and the right bending-resistant cross beam 19 are kept in a gap with the pcb to-be-punched plate 3 below; two cross beam support columns 26 are fixedly mounted on one side portion of the carrier slide rail 2, and the two cross beam support columns 26 are respectively and fixedly supported and connected with one end of each left bending-resistant cross beam 18 and one end of each right bending-resistant cross beam 19 through a plurality of connecting beams 27.

The left bending-resistant beam 18 and the right bending-resistant beam 19 are both rigid hollow column structures with the shaft sections being C-shaped, and a left air outlet groove 31 extending along the axial direction is formed at the C-shaped opening of the left bending-resistant beam 18; a right air outlet groove 32 extending along the axial direction is formed at the C-shaped opening of the right bending-resistant cross beam 19; the left air outlet groove 31 on the left bending-resistant beam 18 is opposite to the right air outlet groove 32 on the right bending-resistant beam 19; a left piston channel 21 is arranged in the left bending-resistant cross beam 18, and a right piston channel 20 is arranged in the right bending-resistant cross beam 19; a left piston group 23 is arranged in the left piston channel 21 in a sliding manner, and a right piston group 22 is arranged in the right piston channel 20;

the left piston group 23 and the right piston group 22 both comprise a front piston 40 and a tail piston 41 which are coaxially arranged, a movable air chamber 42 is formed between the front piston 40 and the tail piston 41, a plurality of hard linkage rods 39 are circumferentially distributed in the movable air chamber 42 in an array manner, and two ends of each linkage rod 39 are respectively and fixedly connected with the front piston 40 and the tail piston 41;

a left air outlet 36 is formed in the left air outlet groove 31 of the movable air chamber 42 formed in the left piston group 23, and pressure accumulation air in the movable air chamber 42 formed in the left piston group 23 can be ejected out through the left air outlet 36;

a right air outlet 37 is formed at the right air outlet groove 32 of the movable air chamber 42 formed in the right piston group 22, and pressure accumulation air in the movable air chamber 42 formed in the right piston group 22 can be ejected out through the right air outlet 37;

the tail piston 41 of each left piston group 23 is integrally and coaxially connected with a left piston push rod 24, and the tail piston 41 of each right piston group 22 is integrally and coaxially connected with a right piston push rod 25; air guide channels 43 are arranged in the left piston push rod 24 and the right piston push rod 25; the air outlet end of the air guide channel 43 in the left piston push rod 24 is communicated with the movable air chamber 42 formed in the left piston group 23; the air outlet end of the air guide channel 43 in the right piston push rod 25 is communicated with the movable air chamber 42 formed in the right piston group 22;

the gas distribution box comprises a gas distribution box body 7, a distribution cavity is formed inside the gas distribution box body 7, the other ends of the left piston push rods 24 and the right piston push rods 25 are fixedly connected to the gas distribution box body 7, and the gas inlet end of each gas guide channel 43 is communicated with the distribution cavity inside the gas distribution box body 7; the air guide box further comprises an air guide hose 11, an air outlet end of the air guide hose 11 is communicated with a flow dividing cavity in the air flow dividing box body 7, and an air inlet end of the air guide hose 11 is connected with an air pump;

the lower side of the gas distribution box body 7 is fixedly connected with a distribution box sliding block 4; still include horizontally second slide rail 5, be provided with second spout 6 along length direction on the second slide rail 5, reposition of redundant personnel case slider 4 slides and sets up in the second spout 6, drive arrangement can drive reposition of redundant personnel case slider 4 is followed the extending direction of second spout 6 slides, the length direction of second slide rail 5 with carrier slide rail 2 is perpendicular.

The punching process and the working principle of the PCB multi-layer overlapped punching process equipment comprise the following steps:

firstly, a plurality of pcb to-be-punched boards 3 are limited and installed on a pcb to-be-punched board carrier 8 in an up-and-down interval overlapping mode, so that overlooking outer contours of the pcb to-be-punched boards 3 installed on the pcb to-be-punched board carrier 8 are overlapped, a chip removal layer 33 is formed at the interval between every two adjacent pcb to-be-punched boards 3, and the tooling process of the pcb to-be-punched boards 3 is completed;

secondly, the driving device drives the telescopic cylinder device 14 to perform translational displacement along the length direction of the cantilever beam 15 along with the sliding block, so that the rotary drill bit 12 performs translational displacement back and forth along the length direction of the cantilever beam 15 along with the telescopic cylinder device 14; meanwhile, the driving device controls the pcb carrier 8 to be punched to move left and right along the carrier sliding groove 9, so that a plurality of pcb plates 3 to be punched on the pcb carrier 8 to be punched move left and right; the left-right translational displacement of the pcb board 3 to be punched is matched with the front-back translational displacement of the rotary drill bit 12, so that the rotary drill bit 12 can correspond to any preset punching position on the pcb board 3 to be punched; pausing the translation of the pcb carrier 8 to be perforated and the translation of the rotary drill bit 12 when the rotary drill bit 12 corresponds to a predetermined perforation position;

in this step, because the left anti-bending beam 18 and the right anti-bending beam 19 are both fixedly installed, and the left anti-bending beam 18 and the right anti-bending beam 19 do not change position during the left-right translational displacement of the pcb board 3 to be punched, the left anti-bending beam 18 and the right anti-bending beam 19 can slide relative to the pcb board 3 to be punched during the left-right translational displacement of the pcb board 3 to be punched, so that the extension line of the rotary drill bit 12 always passes downwards through the gap formed between the left anti-bending beam 18 and the right anti-bending beam 19, and the left anti-bending beam 18 and the right anti-bending beam 19 cannot interfere with the feeding motion of the rotary drill bit 12 all the time;

step three, controlling a telescopic cylinder device 14 to enable a telescopic push rod 13 to drive the drilling machine 10 and the rotary drill bit 12 to move downwards until the lower end of the rotary drill bit 12 contacts the upper side surface of the uppermost pcb board 3 to be punched;

driving the flow distribution box sliding block 4 and the gas flow distribution box body 7 to displace along the direction of the second sliding rail 5 by the driving device, further enabling the left piston group 23 and the right piston group 22 to synchronously displace along the left piston channel 21 and the right piston channel 20 respectively, further enabling the movable air chamber 42 in the left piston group 23 and the movable air chamber 42 in the right piston group 22 to synchronously displace along the left piston group 23 and the right piston group 22, further enabling the left air outlet 36 and the right air outlet 37 to synchronously displace along the left piston group 23 and the right piston group 22 until a downward extension line of the rotary drill bit 12 is just clamped between the left air outlet 36 and the right air outlet 37;

controlling the drilling machine 10 to operate, further enabling the rotary drill bit 12 to rotate at a high speed, and controlling the telescopic cylinder device 14 to enable the telescopic push rod 13 to drive the drilling machine 10 and the rotary drill bit 12 to slowly displace downwards, and continuously and slowly feed downwards along with the rotary drill bit 12, further enabling the rotary drill bit 12 to drill the uppermost pcb board 3 to be punched, wherein in the process that the rotary drill bit 12 drills the uppermost pcb board 3 to be punched, the rotary drill bit 12 can apply a downward jacking force to the uppermost pcb board 3 to be punched, so that the pcb board 3 to be punched is easily deformed, and the problem of low drilling precision is caused; at this time, the left bending-resistant beam 18 and the right bending-resistant beam 19 support the pcb board to be punched 3 above, so that the pcb board to be punched 3 is effectively prevented from being bent due to the jacking pressure of the rotary drill 12; after the through hole on the uppermost pcb to-be-punched board 3 is drilled by the rotary drill bit 12, a large amount of cutting chips are generated on and near the rotary drill bit 12 penetrating the uppermost pcb to-be-punched board 3, and at the moment, the rotary drill bit 12 generates heat due to friction, so that the drilling quality of the next pcb to-be-punched board 3 is affected due to the fact that a large amount of cutting chips are not timely discharged, hole burrs are easily generated due to the chips, and the product quality is finally affected; at this time, the air pump on the air guide hose 11 is started, so that the air guide hose 11 continuously guides the pressurized air into the air distribution box body 7, and finally the pressurized air is sprayed out from each of the left air outlet 36 and the right air outlet 37 at a high speed; at this time, the rotary drill bit 12 penetrating through the uppermost pcb to-be-punched board 3 is just clamped between the left air outlet 36 and the right air outlet 37, so that high-speed air flow is generated near the rotary drill bit 12, and then thermal cutting chips near the rotary drill bit 12 are rapidly taken away, so that the upper part and the vicinity of the rotary drill bit 12 penetrating through the uppermost pcb to-be-punched board 3 are always in a chip-free state, and the chip generated on the upper pcb to-be-punched board 3 is prevented from influencing the drilling of the next pcb to-be-punched board 3; as the rotary drill 12 continues to slowly feed downwards, the rotary drill 12 finally drills holes in all the pcb boards 3 to be punched in sequence for the first time;

step six, controlling a telescopic cylinder device 14 to enable a telescopic push rod 13 to drive the drilling machine 10 and the rotary drill bit 12 to move upwards, and finishing the tool retracting action of the first drilling; and then finding another predetermined puncturing position according to step two.

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

PCB board multilayer eclipsed form punching process equipment which characterized in that: the punching device comprises a pcb carrier (8) for the board to be punched, wherein a plurality of horizontal rectangular boards (3) to be punched which are arranged in an up-and-down overlapping mode are mounted on the pcb carrier (8), and overlooking outer contours of the boards (3) to be punched are overlapped; a drilling mechanism is arranged above the pcb carrier (8) to be drilled; the drilling mechanism can be used for drilling a plurality of pcb plates (3) to be drilled on the pcb plate carrier (8);

the punch plate punching machine is characterized by further comprising a horizontal carrier slide rail (2), wherein the pcb carrier (8) to be punched is arranged in a carrier slide groove (9) on the carrier slide rail (2), and a driving device can drive the pcb carrier (8) to be punched to move left and right along the slide rail direction of the carrier slide groove (9);

the boards (3) to be punched of the pcb carriers (8) are equidistantly arranged, and a chip removal layer (33) is formed between every two adjacent boards (3) to be punched of the pcb carriers (8);

the drilling mechanism comprises a supporting upright post (16) which is fixedly and vertically installed, a horizontal cantilever beam (15) is fixedly installed at the upper end of the supporting upright post (16), and the cantilever beam (15) is positioned right above the pcb carrier (8) to be drilled; the length direction of the cantilever beam (15) is vertical to the extending direction of the carrier sliding groove (9); an electric guide rail is arranged on the lower side of the cantilever beam (15) in the extension direction, a sliding block capable of performing translational displacement along the length direction of the cantilever beam (15) is arranged on the electric guide rail, and a vertical telescopic cylinder device (14) is arranged on the sliding block; the telescopic cylinder device (14) can move in a translation manner along the length direction of the cantilever beam (15) along with the sliding block; the tail end of a telescopic push rod (13) of the telescopic cylinder device (14) is fixedly provided with a vertical drilling machine (10), and a rotary drill bit (12) of the drilling machine (10) is arranged downwards; the rotary drill bit (12) corresponds to a pcb to-be-punched sheet (3) on the pcb to-be-punched sheet carrier (8); the extension movement of the telescopic push rod (13) can enable the rotary drill bit (12) to feed downwards, and each layer of pcb board (3) to be punched is punched one by one;

the pcb board to be punched carrier (8) comprises a bottom sliding plate (29), and the bottom sliding plate (29) can translate left and right in the carrier sliding groove (9) along the sliding rail direction of the carrier sliding rail (2); a left side plate (28) and a right side plate (30) are symmetrically and vertically fixedly arranged on two sides of the bottom sliding plate (29), and a plurality of transverse pcb board clamping grooves (34) to be punched are formed in the inner sides of the left side plate (28) and the right side plate (30) at equal intervals; two side edges of each pcb board (3) to be punched are respectively limited and arranged in corresponding pcb board clamping grooves (34) to be punched on the left side plate (28) and the right side plate (30);

bending-resistant supporting mechanisms are arranged in chip removal layers (33) formed between two adjacent pcb boards (3) to be punched, each bending-resistant supporting mechanism comprises a horizontal left bending-resistant cross beam (18) and a horizontal right bending-resistant cross beam (19), the left bending-resistant cross beam (18) and the right bending-resistant cross beam (19) are perpendicular to the length direction of the carrier sliding rail (2), the gap between the left bending-resistant cross beam (18) and the right bending-resistant cross beam (19) is larger than the outer diameter of the rotary drill bit (12), and the rotary drill bit (12) can downwards penetrate through the gap between the left bending-resistant cross beam (18) and the right bending-resistant cross beam (19); the upper ends of the left bending-resistant cross beam (18) and the right bending-resistant cross beam (19) are in sliding contact with the lower side surface of the upper pcb board (3) to be punched; the lower ends of the left bending-resistant cross beam (18) and the right bending-resistant cross beam (19) keep a gap with a pcb board (3) to be punched below; two cross beam supporting columns (26) are fixedly installed at one side part of the carrier sliding rail (2), and the two cross beam supporting columns (26) are fixedly supported and connected with one end of each left bending-resistant cross beam (18) and one end of each right bending-resistant cross beam (19) through a plurality of connecting beams (27);

the left bending-resistant crossbeam (18) and the right bending-resistant crossbeam (19) are both rigid hollow column structures with the shaft sections being C-shaped, and a left air outlet groove (31) extending along the axial direction is formed at the C-shaped opening of the left bending-resistant crossbeam (18); a right air outlet groove (32) extending along the axial direction is formed at the C-shaped opening of the right bending-resistant cross beam (19); a left air outlet groove (31) on the left bending-resistant cross beam (18) is opposite to a right air outlet groove (32) on the right bending-resistant cross beam (19); a left piston channel (21) is arranged in the left bending-resistant cross beam (18), and a right piston channel (20) is arranged in the right bending-resistant cross beam (19); a left piston group (23) is arranged in the left piston channel (21) in a sliding manner, and a right piston group (22) is arranged in the right piston channel (20);

the left piston group (23) and the right piston group (22) respectively comprise a front piston (40) and a tail piston (41) which are coaxially arranged, a movable air chamber (42) is formed between the front piston (40) and the tail piston (41), a plurality of hard linkage rods (39) are distributed in the movable air chamber (42) in a circumferential array manner, and two ends of each linkage rod (39) are respectively and fixedly connected with the front piston (40) and the tail piston (41);

a left air outlet (36) is formed in the left air outlet groove (31) of a movable air chamber (42) formed in the left piston group (23), and pressure accumulation air in the movable air chamber (42) formed in the left piston group (23) can be sprayed out through the left air outlet (36);

a right air outlet (37) is formed at the right air outlet groove (32) of a movable air chamber (42) formed in the right piston group (22), and pressure accumulation air in the movable air chamber (42) formed in the right piston group (22) can be sprayed out through the right air outlet (37);

the tail piston (41) of each left piston group (23) is integrally and coaxially connected with a left piston push rod (24), and the tail piston (41) of each right piston group (22) is integrally and coaxially connected with a right piston push rod (25); air guide channels (43) are arranged in the left piston push rod (24) and the right piston push rod (25); the air outlet end of an air guide channel (43) in the left piston push rod (24) is communicated with a movable air chamber (42) formed in the left piston group (23); the air outlet end of an air guide channel (43) in the right piston push rod (25) is communicated with a movable air chamber (42) formed in the right piston group (22);

the gas distributor is characterized by further comprising a gas distributor box body (7), a distribution cavity is formed inside the gas distributor box body (7), the other ends of the left piston push rods (24) and the right piston push rods (25) are fixedly connected to the gas distributor box body (7), and the gas inlet end of each gas guide channel (43) is communicated with the distribution cavity inside the gas distributor box body (7); the air guide box is characterized by further comprising an air guide hose (11), wherein the air outlet end of the air guide hose (11) is communicated with a flow dividing cavity in the air flow dividing box body (7), and the air inlet end of the air guide hose (11) is connected with an air pump;

a shunt box sliding block (4) is fixedly connected to the lower side of the gas shunt box body (7); still include horizontally second slide rail (5), be provided with second spout (6) along length direction on second slide rail (5), reposition of redundant personnel case slider (4) slide to set up in second spout (6), drive arrangement can drive reposition of redundant personnel case slider (4) are followed the extending direction of second spout (6) slides, the length direction of second slide rail (5) with carrier slide rail (2) are perpendicular.
2. The punching process of the PCB multi-layer overlapped punching process equipment according to claim 1, wherein the punching process comprises the following steps: the method comprises the following steps:

firstly, a plurality of pcb to-be-punched boards (3) are installed on a pcb to-be-punched board carrier (8) in a limiting manner in an up-and-down interval overlapping manner, so that overlooking outer contours of the pcb to-be-punched boards (3) installed on the pcb to-be-punched board carrier (8) are overlapped, a chip removal layer (33) is formed at an interval between every two adjacent pcb to-be-punched boards (3), and the process of assembling the pcb to-be-punched boards (3) is completed;

secondly, the driving device drives the telescopic cylinder device (14) to move in a translation mode along the length direction of the cantilever beam (15) along with the sliding block, and therefore the rotary drill bit (12) moves in a translation mode back and forth along the length direction of the cantilever beam (15) along with the telescopic cylinder device (14); meanwhile, the driving device controls the pcb carrier (8) to be punched to move left and right along the carrier sliding groove (9), so that a plurality of pcb plates (3) to be punched on the pcb carrier (8) to be punched move left and right; the left-right translational displacement of the pcb board (3) to be punched is matched with the front-back translational displacement of the rotary drill bit (12), so that the rotary drill bit (12) can correspond to any preset punching position on the pcb board (3) to be punched; pausing the translation of the pcb carrier (8) to be perforated and the translation of the rotary drill (12) when the rotary drill (12) corresponds to a predetermined perforation position;

in the step, because the left bending-resistant beam (18) and the right bending-resistant beam (19) are fixedly installed, and the left bending-resistant beam (18) and the right bending-resistant beam (19) cannot change positions in the process of left-right translational displacement of the pcb board to be punched (3), the left bending-resistant beam (18) and the right bending-resistant beam (19) can slide relative to the pcb board to be punched (3) in the process of left-right translational displacement of the pcb board to be punched (3), so that the extension line of the rotary drill bit (12) always passes downwards through a gap formed between the left bending-resistant beam (18) and the right bending-resistant beam (19), and the left bending-resistant beam (18) and the right bending-resistant beam (19) cannot interfere with the feeding motion of the rotary drill bit (12);

controlling a telescopic cylinder device (14) to enable a telescopic push rod (13) to drive a drilling machine (10) and a rotary drill bit (12) to move downwards until the lower end of the rotary drill bit (12) contacts the upper side face of the uppermost pcb (3) to be punched;

fourthly, the driving device drives the flow dividing box sliding block (4) and the gas flow dividing box body (7) to displace along the direction of the second sliding rail (5), so that the left piston group (23) and the right piston group (22) synchronously displace along the left piston channel (21) and the right piston channel (20) respectively, so that the movable air chamber (42) in the left piston group (23) and the movable air chamber (42) in the right piston group (22) synchronously displace along the left piston group (23) and the right piston group (22), so that the left air outlet (36) and the right air outlet (37) synchronously displace along the left piston group (23) and the right piston group (22), and the downward extension line of the rotary drill bit (12) is just clamped between the left air outlet (36) and the right air outlet (37);

controlling a drilling machine (10) to run, further enabling a rotary drill bit (12) to rotate at a high speed, and controlling a telescopic cylinder device (14), so that a telescopic push rod (13) drives the drilling machine (10) and the rotary drill bit (12) to slowly displace downwards, and continuously and slowly feed downwards along with the rotary drill bit (12), further enabling the rotary drill bit (12) to drill the uppermost pcb board to be punched (3), wherein in the process that the rotary drill bit (12) drills the uppermost pcb board to be punched (3), the rotary drill bit (12) can apply a downward jacking force to the uppermost pcb board to be punched (3), so that the pcb board to be punched (3) is easily deformed, and the problem of low drilling precision is caused; at the moment, the left bending-resistant beam (18) and the right bending-resistant beam (19) play a role in supporting the pcb board to be punched (3) above, and the pcb board to be punched (3) is effectively prevented from being bent due to the jacking pressure of the rotary drill (12); after the through hole on the uppermost pcb to-be-punched board (3) is drilled by the rotary drill bit (12), a large amount of cutting chips can be generated on and near the rotary drill bit (12) penetrating the uppermost pcb to-be-punched board (3), and at the moment, the rotary drill bit (12) generates heat due to friction, a large amount of cutting chips cannot be discharged in time, the drilling quality of the next pcb to-be-punched board (3) can be influenced, and hole burrs are easily generated due to the chips, so that the product quality is finally influenced; starting an air pump on the air guide hose (11) at the moment, leading the air guide hose (11) to continuously guide pressurized air into the air distribution box body (7), and finally leading the left air outlets (36) and the right air outlets (37) to spray the pressurized air at a high speed; at the moment, the rotary drill bit (12) penetrating through the uppermost pcb plate (3) to be punched is just clamped between the left air outlet (36) and the right air outlet (37), so that high-speed airflow is generated near the rotary drill bit (12), and then thermal cutting chips near the rotary drill bit (12) are rapidly taken away, so that the rotary drill bit (12) penetrating through the uppermost pcb plate (3) to be punched is always in a chip-free state at the upper part and the vicinity, and the chip chips generated on the upper pcb plate (3) to be punched are prevented from influencing the drilling of the next pcb plate (3) to be punched; as the rotary drill bit (12) continues to slowly feed downwards, finally the rotary drill bit (12) drills all the pcb boards (3) to be punched for the first time;

sixthly, controlling a telescopic cylinder device (14) to enable a telescopic push rod (13) to drive a drilling machine (10) and a rotary drill bit (12) to move upwards to finish the tool retracting action of the first drilling; and then finding another predetermined puncturing position according to step two.