CN113580261A - Device and method for detecting missed drilling on circuit board with high precision - Google Patents
Device and method for detecting missed drilling on circuit board with high precision Download PDFInfo
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- CN113580261A CN113580261A CN202111147102.2A CN202111147102A CN113580261A CN 113580261 A CN113580261 A CN 113580261A CN 202111147102 A CN202111147102 A CN 202111147102A CN 113580261 A CN113580261 A CN 113580261A
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- circuit board
- hole
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- groove
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/16—Perforating by tool or tools of the drill type
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
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Abstract
The invention discloses a device and a method for detecting missed drilling holes on a circuit board with high precision, and the device and the method comprise a workbench (1) and a portal frame (2) fixedly arranged on the table top of the workbench (1), wherein the top surface of a fixed seat (4) is provided with a sinking groove (5), a detection mechanism (13) comprises a step hole (14) formed in the top surface of a bottom plate (11) and a sliding block (15) slidably arranged in a large hole of the step hole (14), the bottom of the small hole of the step hole (14) is provided with a guide hole (17) penetrating through the bottom surface of the bottom plate (11), the top surface and the bottom surface of the sliding block (15) are respectively and fixedly provided with an upper pressure rod (18) and a lower pressure rod (19), the upper pressure rod (18) extends into a gap (12), and the lower pressure rod (19) is slidably arranged in the guide hole (17) and extends below the bottom plate (11). The invention has the beneficial effects that: all the missed drilling holes are detected at one time, the detection is thorough, the missed drilling hole detection efficiency is high, and the production efficiency of the circuit board is improved.
Description
Technical Field
The invention relates to the technical field of precision drilling for drilling holes in a circuit board, in particular to a device and a method for detecting missed drilling holes in the circuit board with high precision.
Background
Along with the continuous development of 5G technique, the quantity of 5G communication equipment is also more and more, and the quantity of the circuit board that uses in the 5G communication equipment is also more and more, and the structure of standard circuit board is as shown in fig. 1~2, and it includes the base plate, sets up the circuit layer on the surface about the base plate respectively, is provided with multirow through-hole 33 in the base plate, and upper and lower end of through-hole 33 runs through upper circuit layer and lower floor's circuit layer respectively, and wherein, the effect of through-hole has following: 1. and relieving current stress. 2. When the product works, the circuit board is very hot, and the through holes are properly added, so that the heat can be released. 3. The upper circuit layer and the lower circuit layer on the substrate are electrically conducted. After the circuit board is produced and formed in batches, the quantity of the through holes 33 meets the requirements technically, in the later quality inspection process, quality inspection personnel often find that the circuit board is provided with a drill-missing phenomenon, namely the through holes 33 at the local positions on the circuit board are not machined, the circuit board is an unqualified board and can only be reworked again, the reason for the problem is that the quantity of the machined through holes is large, and the manual operation is easy or the judgment is problematic, so that some through holes are not machined.
However, the following problems still exist by manual quality inspection: I. the through holes 33 on the circuit board are large in number and irregular in distribution, and quality testing personnel cannot find all the missed drilling holes, so that some unqualified circuit boards flow out to the market, customer complaints are caused, and the problem of incomplete through hole detection exists. II. The time that the workman detects through-hole 33 consumption on the circuit board is longer, causes that can only detect 30~40 circuit boards one day to very big reduction the delivery volume of circuit board, and then influence the economic efficiency of enterprise, there is the defect that detection efficiency is low. And III, even if the existence of the missed drilling is detected, returning the unqualified circuit board to the upper drilling station, fixing the unqualified circuit board tool again, and drilling the un-drilled position by using the drill bit after the tool is fixed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a device and a method for detecting the missed drilling holes on the circuit board with high precision, which have the advantages of compact structure, complete detection, high efficiency of detecting the missed drilling holes and improvement on the production efficiency of the circuit board, and can detect all the missed drilling holes at one time.
The purpose of the invention is realized by the following technical scheme: a device for detecting the leakage drilling on a circuit board with high precision comprises a workbench and a portal frame fixedly arranged on the surface of the workbench, wherein a lower through groove is formed in the workbench, a fixed seat fixedly arranged on the workbench is arranged on the top surface of the lower through groove, the fixed seat is arranged under a cross beam of the portal frame, a sunken groove is formed in the top surface of the fixed seat, the outline of the sunken groove is matched with the outline of a standard circuit board, the standard circuit board is supported on the top surface of the sunken groove, an upper through groove is formed in the bottom surface of the sunken groove, the upper through groove is communicated with the lower through groove, a hydraulic oil cylinder is fixedly arranged on the cross beam of the portal frame, a piston rod of the hydraulic oil cylinder penetrates through the cross beam, a fixed plate, a backing plate and a bottom plate are fixedly arranged from top to bottom in sequence, a gap is reserved between the bottom plate and the backing plate, the bottom plate is arranged right above the sunken groove, and a plurality of detection mechanisms for detecting the leakage drilling are arranged among the fixed plate, the backing plate and the bottom plate, the detection mechanism is including seting up the step hole on the bottom plate top surface, slidable mounting is in the slider in the step hole macropore, set up on the backing plate basal surface and be located the blind hole directly over the step hole, the guiding hole that runs through the bottom plate basal surface is seted up to the bottom of step hole aperture, last depression bar and depression bar have set firmly respectively on the top surface of slider and the basal surface, it extends in the clearance to go up the depression bar, depression bar slidable mounting just extends in the below of bottom plate in the guiding hole, be provided with the spring of cover on the depression bar in the aperture of step hole, the one end of spring sets firmly on the basal surface of slider, the other end sets firmly on the circular bead between guiding hole and the step hole, the hole bottom of blind hole is provided with micro-gap switch, micro-gap switch is connected with the controller electricity through the signal line, the depression bar of each detection mechanism corresponds respectively and sets up directly over each through-hole on the standard circuit board.
The top surface of the bottom plate is provided with a backing strip at the left end and the right end, and the two backing strips are welded on the bottom surface of the backing plate.
Two guide seats are fixedly arranged on the top surface of the portal frame beam, the two guide seats are respectively arranged on the left side and the right side of the hydraulic oil cylinder, guide rods are slidably arranged in the two guide seats, and the bottom ends of the guide rods are fixedly arranged on the top surface of the fixed plate.
The bottom surface of the fixing seat is provided with a plurality of threaded holes, and the fixing seat penetrates through the workbench through screws and is fixed on the workbench in threaded connection with the threaded holes.
The blind hole, the step hole, the guide hole, the sliding block, the upper pressing rod and the lower pressing rod are coaxially arranged.
The bottom of the blind hole is provided with a straight hole, the straight hole penetrates through the top surface of the fixing plate, and a signal wire of the microswitch penetrates through the straight hole and is connected with the controller.
The below of workstation is provided with drilling equipment, drilling equipment includes mounting panel and drilling mechanism, the end is set firmly on the supporting leg of workstation about the mounting panel, be provided with a plurality of drilling mechanisms on the mounting panel, drilling mechanism includes the feed cylinder of vertical setting, motor and drill bit, feed cylinder sets firmly on the basal surface of mounting panel, feed cylinder's piston rod runs through the mounting panel setting, and the effect of piston rod is served and has set firmly the supporting seat, the motor sets firmly on the top surface of supporting seat, the motor sets up in last logical inslot, be connected with the drill bit on the output shaft of motor, the drill bit of each drilling mechanism corresponds respectively and sets up under each through-hole on the standard circuit board.
And the controller is electrically connected with the electromagnetic valve of the feeding oil cylinder, the electromagnetic valve of the hydraulic oil cylinder and the motor.
And the left end surface and the right end surface of the fixing seat are provided with operation grooves communicated with the sinking grooves.
A method for detecting the missed drilling hole on a circuit board with high precision adopts a device for detecting the missed drilling hole on the circuit board with high precision, which comprises the following steps:
s1, taking out the standard circuit board, wherein two fingers of one hand of a worker penetrate through the left operation groove and press the left end face of the standard circuit board, and then two fingers of the other hand penetrate through the right operation groove and press the right end face of the standard circuit board, and then the standard circuit board is lifted up, so that the standard circuit board is moved out of the sinking groove of the fixing seat;
s2, detecting the circuit board A to be detected, wherein the specific operation steps are as follows:
s21, placing the circuit board A to be detected in the sinking groove of the fixing seat from top to bottom by a worker, and supporting the circuit board A on the bottom surface of the sinking groove after the circuit board A to be detected is placed in the sinking groove, so that the quick tooling of the circuit board A to be detected is realized;
s22, a worker controls a piston rod of the hydraulic oil cylinder to extend downwards, the piston rod drives a fixing plate to move downwards, the fixing plate drives a backing plate, a bottom plate and each detection mechanism to move downwards synchronously, after the piston rod extends completely, the bottom plate enters a sinking groove, the bottom surface of the bottom plate is contacted with the top surface of a circuit board A, after the base plate stands still for a period of time, if each microswitch does not send an electric signal to a controller, namely through holes are drilled at positions on the circuit board A corresponding to the microswitches, lower pressure rods of each detection mechanism respectively enter the through holes of the circuit board A correspondingly, each upper pressure rod does not press the microswitch, and the controller does not send a power generation signal to the controller, so that the detected circuit board A is a qualified standard circuit board; if one or more micro-switches send electric signals to the controller, namely the lower pressure rod is jacked upwards at the position, corresponding to the micro-switch, on the circuit board A, the lower pressure rod jacks the slider upwards along the axial direction of the stepped hole, the slider jacks the upper pressure rod upwards, the upper pressure rod enters the blind hole and presses the micro-switch, and the micro-switch sends the electric signals to the controller through a signal wire, so that the detected circuit board A is an unqualified board, and the detection of the circuit board A to be detected is realized;
s3, in the step S22, if the circuit board A is detected to be a qualified standard circuit board, the piston rod of the hydraulic oil cylinder is controlled to retract upwards, and a worker conveys the circuit board A to the next station; if the detected circuit board A is an unqualified board, a piston rod of a feeding oil cylinder corresponding to a microswitch which sends a signal is controlled to extend upwards, a motor on the feeding oil cylinder is controlled to start, the motor drives a drill bit to rotate, the drill bit does linear upward movement and also does rotational movement, so that a through hole is drilled at the position, not drilled, of the circuit board A, and the unqualified board can be processed into a qualified standard circuit board;
s4, repeating the steps S2-S3 to detect the leakage of the next circuit board B.
The invention has the following advantages: all the missed drilling holes are detected at one time, the detection is thorough, the missed drilling hole detection efficiency is high, and the production efficiency of the circuit board is improved.
Drawings
FIG. 1 is a schematic diagram of a standard circuit board;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic structural view of the present invention;
FIG. 4 is a front view of FIG. 3;
FIG. 5 is a view taken along line A of FIG. 3;
FIG. 6 is an enlarged view of a portion I of FIG. 3;
FIG. 7 is a schematic view of a base structure;
FIG. 8 is a top view of the base;
FIG. 9 is a schematic view of detecting no missing drill holes;
FIG. 10 is an enlarged partial view of section II of FIG. 9;
FIG. 11 is a schematic view of a missed borehole being detected;
FIG. 12 is an enlarged partial view of section III of FIG. 11;
in the figure, 1-workbench, 2-gantry, 3-lower through groove, 4-fixing seat, 5-sink groove, 6-standard circuit board, 7-upper through groove, 8-hydraulic oil cylinder, 9-fixing plate, 10-backing plate, 11-bottom plate, 12-gap, 13-detection mechanism, 14-step hole, 15-slide block, 16-blind hole, 17-guide hole, 18-upper pressure rod, 19-lower pressure rod, 20-spring, 21-microswitch, 22-backing strip, 23-guide seat, 24-guide rod, 25-screw, 26-straight hole, 27-mounting plate, 28-drilling mechanism, 29-feeding oil cylinder, 30-motor, 31-drill bit, 32-operation groove, 33-through hole, 34-Circuit Board A.
Detailed Description
The invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following:
as shown in fig. 3 to 8, a device for detecting missed drilling on a circuit board with high precision comprises a workbench 1 and a portal frame 2 fixedly arranged on the table top of the workbench 1, wherein a lower through groove 3 is arranged on the workbench 1, a fixed seat 4 fixedly arranged on the workbench 1 is arranged on the top surface of the lower through groove 3, the fixed seat 4 is arranged under a cross beam of the portal frame 2, a sinking groove 5 is arranged on the top surface of the fixed seat 4, the outer contour of the sinking groove 5 is matched with the outer contour of a standard circuit board 6, the standard circuit board 6 is supported on the top surface of the sinking groove 5, an upper through groove 7 is arranged on the bottom surface of the sinking groove 5, the upper through groove 7 is communicated with the lower through groove 3, a hydraulic cylinder 8 is fixedly arranged on the cross beam of the portal frame 2, a piston rod of the hydraulic cylinder 8 penetrates through the cross beam, a fixed plate 9, a backing plate 10 and a bottom plate 11 are fixedly arranged on the bottom of the piston rod from top to bottom in sequence, a gap 12 is left between the bottom plate 11 and the backing plate 10, the bottom plate 11 is arranged right above the sinking groove 5, a plurality of detection mechanisms 13 for detecting the missed drilling are arranged among the fixed plate 9, the backing plate 10 and the bottom plate 11, each detection mechanism 13 comprises a step hole 14 arranged on the top surface of the bottom plate 11, a slide block 15 slidably arranged in a large hole of the step hole 14, and a blind hole 16 arranged on the bottom surface of the backing plate 10 and located right above the step hole 14, a guide hole 17 penetrating through the bottom surface of the bottom plate 11 is arranged at the bottom of the small hole of the step hole 14, an upper pressure rod 18 and a lower pressure rod 19 are respectively and fixedly arranged on the top surface and the bottom surface of the slide block 15, the upper pressure rod 18 extends into the gap 12, the lower pressure rod 19 is slidably arranged in the guide hole 17 and extends below the bottom plate 11, a spring 20 sleeved on the lower pressure rod 19 is arranged in the small hole of the step hole 14, one end of the spring 20 is fixedly arranged on the bottom surface of the slide block 15, and the other end is fixedly arranged on a shoulder between the guide hole 17 and the step hole 14, the bottom of the blind hole 16 is provided with a microswitch 21, the microswitch 21 is electrically connected with the controller through a signal line, and the lower pressure rods 19 of the detection mechanisms 13 are respectively and correspondingly arranged right above the through holes 33 on the standard circuit board 6. And the left end surface and the right end surface of the fixed seat 4 are provided with operation grooves 32 communicated with the sinking grooves.
The top surface of the bottom plate 11 and the left and right ends thereof are fixedly provided with backing strips 22, and the two backing strips 22 are welded on the bottom surface of the backing plate 10. Two guide seats 23 are fixedly arranged on the top surface of the cross beam of the portal frame 2, the two guide seats 23 are respectively arranged on the left side and the right side of the hydraulic oil cylinder 8, guide rods 24 are slidably arranged in the two guide seats 23, and the bottom ends of the guide rods 24 are fixedly arranged on the top surface of the fixing plate 9. The bottom surface of the fixed seat 4 is provided with a plurality of threaded holes, and the fixed seat 4 penetrates through the workbench 1 through a screw 25 and is fixed on the workbench 1 in threaded connection with the threaded holes. The blind hole 16, the stepped hole 14, the guide hole 17, the slider 15, the upper pressing rod 18 and the lower pressing rod 19 are coaxially arranged. The bottom of the blind hole 16 is provided with a straight hole 26, the straight hole 26 is arranged through the top surface of the fixing plate 9, and the signal line of the microswitch 21 passes through the straight hole 26 and is connected with the controller.
The below of workstation 1 is provided with drilling equipment, drilling equipment includes mounting panel 27 and drilling mechanism 28, the end is fixed on the supporting leg of workstation 1 about mounting panel 27, be provided with a plurality of drilling mechanism 28 on the mounting panel 27, drilling mechanism 28 includes the feed cylinder 29 of vertical setting, motor 30 and drill bit 31, feed cylinder 29 sets firmly on the basal surface of mounting panel 27, feed cylinder 29's piston rod runs through the mounting panel 27 setting, and the effect of piston rod is served and is set firmly the supporting seat, motor 30 sets firmly on the top surface of supporting seat, motor 30 sets up in last logical inslot 7, be connected with drill bit 31 on motor 30's the output shaft, drill bit 31 of each drilling mechanism 28 corresponds respectively and sets up under each through-hole 33 on standard circuit board 6.
The controller is electrically connected with the electromagnetic valve of the feeding oil cylinder 29, the electromagnetic valve of the hydraulic oil cylinder 8 and the motor 30, the extension or retraction of the piston rods of the feeding oil cylinder 29 and the hydraulic oil cylinder 8 can be controlled through the controller, and meanwhile, the motor 30 can be controlled to be started or closed, so that the operation of work is facilitated, and the controller has the characteristic of high automation degree.
A method for detecting the missed drilling hole on a circuit board with high precision adopts a device for detecting the missed drilling hole on the circuit board with high precision, which comprises the following steps:
s1, taking out the standard circuit board, wherein two fingers of one hand of a worker penetrate through the left operation slot 32 and press the left end face of the standard circuit board 6, and then two fingers of the other hand penetrate through the right operation slot 32 and press the right end face of the standard circuit board 6, and then the standard circuit board 6 is lifted up, so that the standard circuit board 6 is removed from the sinking groove 5 of the fixed seat 4;
s2, detecting the circuit board A to be detected, wherein the specific operation steps are as follows:
s21, placing the circuit board A34 to be detected in the sinking groove 5 of the fixed seat 4 from top to bottom by a worker, and supporting the circuit board A34 on the bottom surface of the sinking groove 5 after the circuit board A is placed, so that the quick tool for the circuit board A to be detected is realized;
s22, a worker controls a piston rod of the hydraulic oil cylinder 8 to extend downwards, the piston rod drives the fixing plate 9 to move downwards, the fixing plate 9 drives the backing plate 10, the bottom plate 11 and the detection mechanisms 13 to move downwards synchronously, after the piston rod extends completely, the bottom plate 11 enters the sinking groove 5, the bottom surface of the bottom plate 11 is in contact with the top surface of the circuit board A34, after the circuit board A is static for a period of time, if the micro switches 21 do not send electric signals to a controller, namely through holes 33 are drilled in positions, corresponding to the micro switches 21, on the circuit board A34, the lower pressing rods 19 of the detection mechanisms 13 respectively enter the through holes 33 of the circuit board A34 correspondingly, as shown in figures 9-10, the upper pressing rods 18 are not pressed on the micro switches 21, and the controller does not generate electric signals to the controller, so that the detected circuit board A34 is a qualified standard circuit board; if one or more micro-switches 21 send an electric signal to the controller, that is, the lower pressing rod 19 is pushed upwards at a position on the circuit board a34 corresponding to the micro-switch 21, the lower pressing rod 19 pushes the slider 15 upwards along the axial direction of the stepped hole 14, the slider 15 pushes the upper pressing rod 18 upwards, the upper pressing rod 18 enters the blind hole 16 and presses the micro-switch 21 as shown in fig. 11-12, and the micro-switch 21 sends an electric signal to the controller through a signal line, it is indicated that the detected circuit board a34 is an unqualified board, so that the detection of the circuit board a to be detected is realized; in whole testing process, realized all hourglass drilling on the disposable detection circuit board, made to detect more thoroughly, avoided leading to the unqualified board to flow out to market because of artificial detection error, avoided by the customer because of the quality complaint, and need not artifical quality control, very big alleviate workman's working strength, still improved detection efficiency simultaneously. In addition, the device has shortened the check out time of leaking drilling on a circuit board, consequently can detect 100~140 circuit boards one day, very big shortening check out time, and then very big improvement detection efficiency, and then improved the production efficiency of circuit board.
S3, in step S22, if the circuit board A34 is detected to be a qualified standard circuit board, the piston rod of the hydraulic oil cylinder 8 is controlled to retract upwards, and a worker conveys the circuit board A34 to the next station; if the detected circuit board A34 is an unqualified board, the piston rod of the feeding oil cylinder 29 corresponding to the microswitch 21 which sends out a signal is controlled to extend upwards, and the motor 30 on the feeding oil cylinder 29 is controlled to start, the motor 30 drives the drill bit 31 to rotate, the drill bit 31 does linear upward movement and also does rotational movement, so that a through hole 33 is drilled at the position of the circuit board A34 where no hole is drilled, and the unqualified board can be processed into an qualified standard circuit board; therefore, unqualified boards do not need to be manually returned to the upper-stage drilling station, unqualified boards do not need to be re-positioned by a tool, the positions which are not drilled are directly drilled, any hole leakage is avoided on the circuit board, the processing time of the circuit board is greatly saved, and the production efficiency of the circuit board is greatly improved.
And S4, controlling the piston rods of the hydraulic oil cylinder 8 and the feed oil cylinder 29 to reset, and repeating the steps S2-S3 to detect the leakage hole of the next circuit board B.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a device that leaks drilling on high accuracy detection circuit board which characterized in that: the gantry comprises a workbench (1) and a portal frame (2) fixedly arranged on the table top of the workbench (1), wherein a lower through groove (3) is formed in the workbench (1), a fixing seat (4) fixedly arranged on the workbench (1) is arranged on the top surface of the lower through groove (3), the fixing seat (4) is arranged under a cross beam of the portal frame (2), a sinking groove (5) is formed in the top surface of the fixing seat (4), the outline of the sinking groove (5) is matched with the outline of a standard circuit board (6), the standard circuit board (6) is supported on the top surface of the sinking groove (5), an upper through groove (7) is formed in the bottom surface of the sinking groove (5), the upper through groove (7) is communicated with the lower through groove (3), a hydraulic oil cylinder (8) is fixedly arranged on the cross beam of the portal frame (2), a piston rod of the hydraulic oil cylinder (8) penetrates through the cross beam, a fixing plate (9) is sequentially fixedly arranged at the bottom of the piston rod from top to bottom, The detection device comprises a base plate (10) and a bottom plate (11), a gap (12) is reserved between the bottom plate (11) and the base plate (10), the bottom plate (11) is arranged right above a sink groove (5), a plurality of detection mechanisms (13) for detecting missed drilling are arranged among a fixing plate (9), the base plate (10) and the bottom plate (11), each detection mechanism (13) comprises a step hole (14) formed in the top surface of the bottom plate (11), a sliding block (15) installed in a large hole of the step hole (14) in a sliding mode, a blind hole (16) formed in the bottom surface of the base plate (10) and located right above the step hole (14), a guide hole (17) penetrating through the bottom surface of the bottom plate (11) is formed in the bottom of a small hole of the step hole (14), an upper pressing rod (18) and a lower pressing rod (19) are fixedly arranged on the top surface and the bottom surface of the sliding block (15) respectively, the upper pressing rod (18) extends into the gap (12), the lower pressing rod (19) is installed in the guide hole (17) in a sliding mode and extends to the lower portion of the bottom plate (11), a spring (20) sleeved on a lower pressing rod (19) is arranged in a small hole of the stepped hole (14), one end of the spring (20) is fixedly arranged on the bottom surface of the sliding block (15), the other end of the spring (20) is fixedly arranged on a shoulder between the guide hole (17) and the stepped hole (14), a micro switch (21) is arranged at the bottom of the blind hole (16), the micro switch (21) is electrically connected with a controller through a signal line, and the lower pressing rods (19) of all detection mechanisms (13) are respectively and correspondingly arranged right above all through holes (33) in the standard circuit board (6).
2. The device for detecting the missed drilling hole on the circuit board with high precision as claimed in claim 1, wherein: the top surface of the bottom plate (11) is provided with a gasket strip (22) at the left end and the right end, and the two gasket strips (22) are welded on the bottom surface of the gasket plate (10).
3. The device for detecting the missed drilling hole on the circuit board with high precision as claimed in claim 1, wherein: two guide seats (23) are fixedly arranged on the top surface of the cross beam of the portal frame (2), the two guide seats (23) are respectively arranged on the left side and the right side of the hydraulic oil cylinder (8), guide rods (24) are slidably arranged in the two guide seats (23), and the bottom ends of the guide rods (24) are fixedly arranged on the top surface of the fixing plate (9).
4. The device for detecting the missed drilling hole on the circuit board with high precision as claimed in claim 1, wherein: the bottom surface of the fixed seat (4) is provided with a plurality of threaded holes, and the fixed seat (4) penetrates through the workbench (1) through a screw (25) and is fixed on the workbench (1) in threaded connection with the threaded holes.
5. The device for detecting the missed drilling hole on the circuit board with high precision as claimed in claim 1, wherein: the blind hole (16), the stepped hole (14), the guide hole (17), the sliding block (15), the upper pressing rod (18) and the lower pressing rod (19) are coaxially arranged.
6. The device for detecting the missed drilling hole on the circuit board with high precision as claimed in claim 1, wherein: the bottom of the blind hole (16) is provided with a straight hole (26), the straight hole (26) penetrates through the top surface of the fixing plate (9), and a signal line of the microswitch (21) penetrates through the straight hole (26) and is connected with the controller.
7. The device for detecting the missed drilling hole on the circuit board with high precision as claimed in claim 1, wherein: a drilling device is arranged below the workbench (1), the drilling device comprises a mounting plate (27) and drilling mechanisms (28), the left end and the right end of the mounting plate (27) are fixedly arranged on supporting legs of the workbench (1), the mounting plate (27) is provided with a plurality of drilling mechanisms (28), each drilling mechanism (28) comprises a feeding oil cylinder (29), a motor (30) and a drill bit (31) which are vertically arranged, the feeding oil cylinder (29) is fixedly arranged on the bottom surface of the mounting plate (27), a piston rod of the feeding oil cylinder (29) penetrates through the mounting plate (27) to be arranged, and the action end of the piston rod is fixedly provided with a supporting seat, the motor (30) is fixedly arranged on the top surface of the supporting seat, the motor (30) is arranged in the upper through groove (7), the output shaft of the motor (30) is connected with a drill bit (31), and the drill bits (31) of all drilling mechanisms (28) are respectively and correspondingly arranged right below all through holes (33) on the standard circuit board (6).
8. The device for detecting the missed drilling hole on the circuit board with high precision as claimed in claim 6, wherein: the controller is electrically connected with the electromagnetic valve of the feeding oil cylinder (29), the electromagnetic valve of the hydraulic oil cylinder (8) and the motor (30).
9. The device for detecting the missed drilling hole on the circuit board with high precision as claimed in claim 1, wherein: and the left end surface and the right end surface of the fixed seat (4) are provided with operation grooves (32) communicated with the sinking grooves.
10. A method for detecting a missing drilled hole on a circuit board with high precision, which adopts the device for detecting a missing drilled hole on a circuit board with high precision as claimed in any one of claims 1 to 9, characterized in that: it comprises the following steps:
s1, taking out the standard circuit board, wherein two fingers of one hand of a worker penetrate through the left operation groove (32) and press the left end surface of the standard circuit board (6), and then two fingers of the other hand penetrate through the right operation groove (32) and press the right end surface of the standard circuit board (6), and then the standard circuit board (6) is lifted up, so that the standard circuit board (6) is removed from the sinking groove (5) of the fixed seat (4);
s2, detecting the circuit board A to be detected, wherein the specific operation steps are as follows:
s21, a worker places the circuit board A (34) to be detected in the sinking groove (5) of the fixing seat (4) from top to bottom, and after the circuit board A (34) is placed in the sinking groove (5), the circuit board A is supported on the bottom surface of the sinking groove (5), so that the quick tool for the circuit board A to be detected is realized;
s22, a worker controls a piston rod of a hydraulic oil cylinder (8) to extend downwards, the piston rod drives a fixing plate (9) to move downwards, the fixing plate (9) drives a backing plate (10), a bottom plate (11) and each detection mechanism (13) to move downwards synchronously, after the piston rod extends completely, the bottom plate (11) enters a sinking groove (5), the bottom surface of the bottom plate (11) is contacted with the top surface of a circuit board A (34), after the base plate is static for a period of time, if each micro switch (21) does not send an electric signal to a controller, namely, through holes (33) are drilled at positions on the circuit board A (34) corresponding to each micro switch (21), lower pressure rods (19) of each detection mechanism (13) respectively enter each through hole (33) of the circuit board A (34) correspondingly, each upper pressure rod (18) is not pressed on the micro switch (21), and the controller does not send the electric signal to the controller, the detected circuit board A (34) is a qualified standard circuit board; if one or more micro switches (21) send an electric signal to the controller, namely the lower pressure rod (19) is jacked upwards at the position, corresponding to the micro switch (21), on the circuit board A (34), the lower pressure rod (19) jacks up the sliding block (15) upwards along the axial direction of the stepped hole (14), the sliding block (15) jacks up the upper pressure rod (18), the upper pressure rod (18) enters the blind hole (16) and is pressed on the micro switch (21), and the micro switch (21) sends an electric signal to the controller through a signal line, so that the detected circuit board A (34) is an unqualified board, and the detection of the circuit board A to be detected is realized;
s3, in step S22, if the circuit board A (34) is detected to be a qualified standard circuit board, the piston rod of the hydraulic oil cylinder (8) is controlled to retract upwards, and a worker conveys the circuit board A (34) to the next station; if the detected circuit board A (34) is an unqualified board, a piston rod of a feeding oil cylinder (29) corresponding to a microswitch (21) sending a signal is controlled to extend upwards, a motor (30) on the feeding oil cylinder (29) is controlled to start, the motor (30) drives a drill bit (31) to rotate, the drill bit (31) does linear upward movement and also does rotational movement, so that a through hole (33) is drilled at the position, which is not drilled, on the circuit board A (34), and the unqualified board can be processed into a qualified standard circuit board;
s4, repeating the steps S2-S3 to detect the leakage of the next circuit board B.
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| CN202111147102.2A CN113580261B (en) | 2021-09-29 | 2021-09-29 | Device and method for detecting missed drilling on circuit board with high precision |
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| CN202111147102.2A CN113580261B (en) | 2021-09-29 | 2021-09-29 | Device and method for detecting missed drilling on circuit board with high precision |
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| CN116533320A (en) * | 2023-06-26 | 2023-08-04 | 四川英创力电子科技股份有限公司 | Dual-positioning circuit board drilling equipment |
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