CN214407345U - Original point reset system for measuring line width and line distance of PCB - Google Patents

Abstract

The invention discloses a PCB board line width and line distance measurement origin reset system, which comprises: an XYZ axis system, a photoelectric sensing system and a computer device; the imaging device, the photoelectric sensing system and the XYZ axis system are electrically connected with the computer device. The invention realizes the functions of induction switching, induction resetting and induction positioning of an XYZ system by arranging the induction photoelectric system, thereby realizing automatic positioning operation measurement, limit early warning prevention and control in the measurement process and automatic lens resetting after measurement.

Description

Original point reset system for measuring line width and line distance of PCB

Technical Field

The invention relates to the technical field of line width and line distance measurement, in particular to a PCB line width and line distance measurement origin reset system.

Background

With the rapid development of the PCB industry, the quality requirement of the production process is more and more strict. The PCB board line width measuring equipment is more and more popular, and the manual line width measuring instrument that mostly uses in the existing market is leading, and manual line width measuring instrument needs the manual work to remove by the survey PCB board, removes the measuring point to imaging device's formation of image within range, then manual location operation measurement again, does not have spacing early warning mechanism in the measurement process, and manual resetting to XYZ axle after measuring, extravagant manpower, detection efficiency is low.

Therefore, the prior art has defects and needs to be improved and developed.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a reset system for measuring the line width and line distance of a PCB, aiming at the defects of the prior art pointed out in the background art.

Another object of the present invention is to provide a PCB board linewidth and linewidth measuring device having the above PCB board linewidth and linewidth measuring origin resetting system.

The technical scheme adopted by the invention for solving the technical problem is as follows:

the utility model provides a PCB board linewidth line spacing measurement initial point reset system which characterized in that includes:

an XYZ axis system configured to drive a measuring lens to move above a point to be measured of a PCB to be measured, the XYZ axis system comprising: an X-axis system, a Y-axis system and a Z-axis system;

the photoelectric sensing system comprises photoelectric switches and photoelectric switch sensing pieces which are respectively arranged on an X-axis system, a Y-axis system and a Z-axis system, wherein the X-axis system, the Y-axis system and the Z-axis system are respectively provided with 3 photoelectric switches and 1 photoelectric switch sensing piece, and the 3 photoelectric switches are a positive limit photoelectric switch, an original point photoelectric switch and a negative limit photoelectric switch;

a computer device;

wherein the imaging device, the photoelectric sensing system and the XYZ axis system are electrically connected with the computer device.

The photoelectric sensing system is creatively arranged in an X-axis system, a Y-axis system and a Z-axis system, and photoelectric switches in the photoelectric sensing system comprise positive limit switches, original points and negative limit switches, and sense the positions of photoelectric switch sensing pieces, so that the functions of sensing switches, sensing reset and sensing positioning of an XYZ system can be realized, and further, the automatic positioning operation measurement, the limit early warning prevention and control in the measurement process and the automatic reset of a measured lens can be realized.

The origin reset system comprises the functions of induction limiting, positioning and resetting, and the specific principle is as follows:

(1) when the control computer device carries out X-axis/Y-axis/Z-axis reset, the X-axis/Y-axis/Z-axis can simultaneously move towards positive limit, when the positive limit photoelectric switch is triggered, the X-axis/Y-axis/Z-axis can find back the origin photoelectric switch, when the origin photoelectric switch is triggered, the X-axis/Y-axis/Z-axis stops moving, and then the reset is completed.

(2) Along with the movement of the X axis, the Y axis and the Z axis, when the corresponding photoelectric switch senses the photoelectric switch sensing piece, a triggering signal is sent to the computer device, and the software of the computer device displays a triggering state. For example, when the sensing piece touches a positive limit photoelectric switch, the software can prompt that the corresponding axis triggers the positive limit, and the computer device can give an alarm and stop the movement of the corresponding X axis/Y axis/Z axis.

(3) When the X-axis/Y-axis/Z-axis three-axis driver is debugged, the number of pulses sent by the motion control card, namely the corresponding moving distance of the X-axis/Y-axis/Z-axis is set in the computer device, then the computer device feeds back the number of actually moving pulses, and whether the sent pulses and the fed-back pulses are positioned or not is determined.

Further, the Y-axis system includes the bottom plate, sets up the Y axle drive arrangement on the bottom plate, Y axle drive arrangement is Y axle linear electric motor, Y axle linear electric motor includes Y axle linear electric motor stator and Y axle linear electric motor active cell, be the concave part in the middle of the bottom plate, Y axle linear electric motor stator is the long stator of rectangular form that sets up in the concave part, Y axle linear electric motor stator both sides all evenly are provided with two Y axle guide rails on the bottom plate, every be equipped with Y axle slider on the Y axle guide rail, Y axle slider and the highly uniform of Y axle linear electric motor active cell protrusion bottom plate are provided with Y axle slip table at Y axle linear electric motor active cell and the fixed Y axle slip table that is provided with in Y axle slider upper portion.

Further preferably, the Y-axis system is provided with a Y-axis photoelectric switch, the Y-axis photoelectric switch is arranged on the bottom plates at two ends of the Y-axis linear motor stator through a photoelectric switch guide rail, the photoelectric switch guide rail is fixed on the bottom plate and is arranged in parallel with the Y-axis guide rail, the Y-axis photoelectric switch can slide on the photoelectric switch guide rail, and a Y-axis photoelectric switch induction sheet corresponding to the Y-axis photoelectric switch is arranged at the bottom of the Y-axis sliding table.

Still further preferably, 3 photoelectric switches are arranged, 2 photoelectric switch guide rails are arranged, 2 photoelectric switches are arranged on one photoelectric switch guide rail, 1 photoelectric switch is arranged on the other photoelectric switch guide rail, and the 3 photoelectric switches are respectively a positive limit switch, an origin and a negative limit switch.

Further, X axle system includes X axle supporting seat, X axle base, X axle drive arrangement, and X axle supporting seat is equipped with two, and fixed mounting is provided with X axle bottom plate in the middle of the X axle supporting seat respectively at the both ends of Y axle slip table, has two X axle guide rails at one side parallel arrangement of X axle bottom plate, is X axle drive arrangement between two X axle guide rails, X axle drive arrangement is linear electric motor, X axle drive arrangement is equipped with the X axle slider on 2X axle guide rails including X axle linear electric motor stator and the X axle linear electric motor active cell that sets up between two X axle guide rails, at X axle linear electric motor active cell and the fixed X axle slip table that is provided with in X axle slider upper portion.

Further preferably, an X-axis photoelectric switch is further arranged on the X-axis base, and an X-axis photoelectric switch sensing piece corresponding to the X-axis photoelectric switch is arranged on the upper portion of the X-axis sliding table.

Still further preferably, the number of the X-axis photoelectric switches is 3, and the 3 photoelectric switches are respectively a positive limit switch, an origin point and a negative limit switch.

Further, Z axle system includes Z axle supporting seat, Z axle base, Z axle actuating system and Z axle fishplate bar, and Z axle supporting seat fixes on X axle slip table, and one side fixed connection of Z axle supporting seat and Z axle base, the opposite side of Z axle base set up to Z axle actuating system, Z axle actuating system is rotating electrical machines, Z axle actuating system include motor main part, motor side closing cap and with Z axle base parallel arrangement's motor upper cover, the cover has Z axle slip table on the motor, the one end of Z axle slip table is connected with rotating electrical machines's motor main part output, realizes Z to the motion of Z axle slip table, and Z axle slip table opposite side is fixed with Z axle fishplate bar.

Further preferably, a Z-axis photoelectric switch is further arranged on the Z-axis base, a Z-axis photoelectric switch sensing piece corresponding to the Z-axis photoelectric switch is arranged on the Z-axis sliding table, and the Z-axis photoelectric switch sensing piece moves along with the movement of the Z-axis sliding table.

Still further preferably, 3 photoelectric switches are arranged on the Z axis, and the 3 photoelectric switches are respectively a positive limit switch, an origin and a negative limit switch.

Further, the PCB to be tested is fixedly arranged and does not move along with the movement of the XYZ system.

The invention also discloses a PCB line width and line distance measuring device comprising the PCB line width and line distance measuring origin reset system.

Compared with the prior art, the invention has the beneficial effects that:

the invention creatively operates the computer device through the measuring lenses arranged on the movable X-axis system, the Y-axis system and the Z-axis system, the measuring lenses can be driven by the three X, Y and Z axes to automatically move to the point to be measured of the PCB to be measured, an operator does not need to manually move the position of the PCB to be measured, the labor is saved, the risks of falling off, protrusion, air leakage and PCB deviation caused by moving the PCB to be measured are prevented, and the detection efficiency and the detection accuracy are improved. Meanwhile, the photoelectric sensing system is arranged, photoelectric switches in the photoelectric sensing system comprise positive limit switches, original points and negative limit switches, the positions of photoelectric switch sensing pieces are sensed, the functions of sensing switches, sensing reset and sensing positioning of an XYZ system can be realized, and further the automatic positioning operation measurement, the limiting early warning prevention and control in the measurement process and the automatic lens reset after the measurement can be realized.

Drawings

Fig. 1 is a schematic structural diagram of a device for measuring the line width and the line spacing of a PCB in embodiment 1.

Fig. 2 is a schematic structural diagram of a system for measuring the line width of the PCB in embodiment 1 and resetting the origin.

Fig. 3 is a schematic structural diagram of a Y-axis system of the PCB board line width measuring apparatus in embodiment 1.

Fig. 4 is a schematic structural diagram of an X-axis system of the PCB board line width measuring apparatus in embodiment 1.

Fig. 5 is a schematic structural diagram of a Z-axis system and an imaging system of the PCB board line width measuring apparatus in embodiment 1.

Fig. 6 is a schematic structural view of a PCB fixing and adsorbing device of the PCB line width measuring apparatus in embodiment 1.

Fig. 7 is a schematic diagram of a local explosion structure of a PCB fixing and adsorbing device of the PCB line width measuring apparatus in embodiment 1.

Fig. 8 is a schematic view of a lower frame structure of the PCB board line width measuring apparatus in embodiment 1.

Fig. 9 is a schematic structural diagram of an upper frame of the PCB line width measuring apparatus in embodiment 1.

Fig. 10 is a schematic structural diagram of the Z-axis system and the imaging system of the PCB board line width measuring apparatus in embodiment 1.

Description of reference numerals:

1-a frame; 11-mounting the frame; 12-lower frame;

2-fixing the adsorption device on the PCB; 21-an adsorption platform body; 22-a platform shelf; 23-adsorption platform fixing strip; 24-a rectangular frame; 25-a support column; 26-angle fixing blocks; 27-an adsorption zone; 28-cover plate; 29-an adsorption plate; 210-a sealing plate; 211-air connecting pipe; 212-suction holes; 213-a stop bar; 214-a suction device;

3-XYZ axis system; 31-X axis system; 311-X axis support seat; 312-X axis mount; 313-X axis end plate; 314-X axis base plate; 315-X axis guide rail; 316-X axis linear motor stator; 317-X axis linear motor rotor; 318-X axis slide; 319-X axis slips; 3110-X axis tow chain mounting slots; 3111-X axis drag chain; 3112-crashproof glue; 3113-X axis fixed bumper block; 3114-X-axis photoelectric switch; 3115-X-axis line shield grooves; a 32-Y axis system; 321-a bottom plate; 322-Y axis linear motor stator; 323-Y axis linear motor mover; 324-Y axis guides; 325-Y axis slide block; 326-Y axis slide; 327-Y axis drag chain mounting groove; 328-Y axis drag chain; 329-Y axis fixed anti-collision block; 3210-photoelectric switch guide rail; 3211-Y axis photoelectric switch; a 33-Z axis system; 331-Z axis support seat; 332-Z axis base; a 333-Z axis adapter plate; 334-Z axis motor body; 335-Z axis motor side cover; 336-Z axis motor upper cover; 337-Z axis slipway; 338-Z-axis photoelectric switches; 339-Z axis photoelectric switch induction sheet.

4-a computer device;

5-an imaging device; 51-lens holder; 52-test camera; 53-lens barrel; 54-automatic zoom module; 55-a light source; 56-ultrasonic sensor.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example 1

The embodiment discloses a PCB line width and line distance measurement origin resetting system and a PCB line width and line distance measurement device using the same.

Referring to fig. 2, the present embodiment provides a system for resetting a line width and a line distance measurement origin of a PCB, including:

an XYZ axis system 3 configured to drive an imaging device 5 to move above a point to be measured of a PCB to be measured, the XYZ axis system comprising: an X-axis system 31, a Y-axis system 32, and a Z-axis system 33;

the photoelectric sensing system comprises photoelectric switches and photoelectric switch sensing pieces which are respectively arranged on an X-axis system 31, a Y-axis system 32 and a Z-axis system 33, wherein the X-axis system 31, the Y-axis system 32 and the Z-axis system 33 are respectively provided with 3 photoelectric switches and 1 photoelectric switch sensing piece, and the 3 photoelectric switches are a positive limit photoelectric switch, an original point photoelectric switch and a negative limit photoelectric switch;

a computer device 4;

wherein the imaging device 5, the photoelectric sensing system and the XYZ axis system 3 are electrically connected with the computer device 4.

In this embodiment 1, the system for measuring the line width and the line distance of the PCB is suitable for PCB line width and line distance measuring devices with various structures, and the system for measuring the line width and the line distance of the PCB and a typical measuring device using the system are described below with reference to a PCB line width and line distance measuring device using the system for measuring the line width and the line distance of the PCB:

referring to fig. 1 and 2, a PCB board linewidth and linewidth measuring apparatus using the origin resetting system includes: the device comprises a rack 1, a PCB fixing and adsorbing device 2, an XYZ axis system 3, a computer device 4 and an imaging device 5. The PCB fixing and adsorbing device 2, the XYZ axis system 3, the computer device 4 and the imaging device 5 are all arranged on the rack 1, and the PCB fixing and adsorbing device 2 is used for adsorbing and placing a PCB to be tested. The XYZ axis system 3 comprises an X axis system 31, a Y axis system 32 and a Z axis system 33; the imaging device 5 is disposed on the Z-axis system 33, the Z-axis system 33 is disposed on the X-axis system 31, the X-axis system 31 is disposed on the Y-axis system 32, the Y-axis system 32 is configured to drive the X-axis system 31 to move along the Y-axis, the X-axis system 31 is configured to drive the Z-axis system 33 to move along the X-axis, and the Z-axis system 33 is configured to drive the imaging device 4 to move along the Z-axis, that is: the imaging device is driven by an XYZ axis system 3 and can move along the XYZ direction, and the imaging device 5 and the XYZ axis system 3 are electrically connected with the computer device 4.

According to the invention, the fixed PCB fixing and adsorbing device 2 is arranged, the imaging device 5 arranged on the movable X-axis system 31, the Y-axis system 32 and the Z-axis system 33 is used for operating the computer device 4, so that the imaging device 5 can be driven by three axes to automatically move the imaging range of the imaging device 4 to the point to be measured of the PCB to be measured, an operator is not required to manually move the position of the PCB to be measured, the labor is saved, the risks of falling off, protrusion, air leakage and PCB deviation caused by moving the PCB to be measured are also prevented, and the detection efficiency and accuracy are improved.

As shown in fig. 8 and 9, the rack 1 includes an upper rack 11 and a lower rack 12, the upper rack 11 and the lower rack 12 are both frame-type structures, a conventional openable and closable door and window structure is disposed around the upper rack, the computer device 4 is disposed in the lower rack 12, an air extractor 214 is further disposed in the lower rack 12, the XYZ shaft system 3 is fixedly disposed on the frame-type structure of the lower rack 12, and more specifically, the frame-type structure of the lower rack 12 is directly fixed in contact with the Y shaft system 32 of the XYZ shaft system 3. The upper frame 11 is further provided with a status display stand 111 and a drawer type keyboard base 112.

Fig. 3 is a structure diagram of a Y-axis system 32, which includes a base plate 321 fixed on the frame 1, and a Y-axis driving device disposed on the base plate 321, the Y-axis driving device is a Y-axis linear motor, the Y-axis linear motor includes a Y-axis linear motor stator 322 and a Y-axis linear motor mover 323, a concave portion is disposed in the middle of the base plate 321, the Y-axis linear motor stator 322 is an elongated long stator, and is disposed in the recess, the Y-axis linear motor mover 323 is block-shaped and located above the Y-axis linear motor stator 322, can do reciprocating motion within the length range of the Y-axis linear motor stator 322, two Y-axis guide rails 324 are uniformly arranged on two sides of the Y-axis linear motor stator 322 on the bottom plate 321, Y-axis sliding blocks 325 are arranged on 4Y-axis guide rails 324, the Y-axis slider 325 and the Y-axis linear motor mover 323 protrude from the base plate 321 at the same height, a Y-axis sliding table 326 is fixedly provided on the upper portions of the Y-axis linear motor mover 323 and the Y-axis slider 325. Namely: the Y-axis slide 326 is driven by the Y-axis driving device to reciprocate along the Y-axis guide rail 324 or the Y-axis linear motor stator 322. In this embodiment, a Y-axis tow chain installation groove 327 is fixedly installed at a side of the bottom plate 321 parallel to the Y-axis guide rail 324, and a Y-axis tow chain 328 is installed in the Y-axis tow chain installation groove 327. In this embodiment, 4Y-axis fixed anti-collision blocks 329 are disposed on a moving path of the Y-axis slider 325 near the Y-axis guide rails 324 on the bottom plate 321, and the Y-axis fixed anti-collision blocks 329 are respectively disposed at two ends of the two Y-axis guide rails 324 near the Y-axis linear motor stator 322.

In this embodiment, the Y-axis system 32 is further provided with 3Y-axis photoelectric switches 3211, the Y-axis photoelectric switches 3211 are disposed on the bottom plates 321 at two ends of the Y-axis linear motor stator 322 through photoelectric switch guide rails 3210, the photoelectric switch guide rails 3210 are fixed on the bottom plates 321 and are parallel to the Y-axis guide rails 324, the Y-axis photoelectric switches 3211 can slide on the photoelectric switch guide rails 3210, the Y-axis photoelectric switches 3211 are slid to define the sensing position of the Y-axis in the XYZ-axis system 3, a Y-axis photoelectric switch sensing piece (not shown) corresponding to the Y-axis photoelectric switch 3211 is disposed at the bottom of the Y-axis sliding table 326, and the Y-axis photoelectric switch sensing piece moves along with the movement of the Y-axis sliding table 326 and is used for sensing a switching function corresponding to the 3Y-axis photoelectric switches 3211.

Specifically, in this embodiment, the 3Y-axis photoelectric switches 3211 of the Y-axis system 32 are respectively a positive limit switch, an origin point switch, and a negative limit switch, and when the Y-axis moves on the platform, the Y-axis photoelectric switch sensing plate fixed at the bottom of the Y-axis sliding table 326 also moves along with the movement.

In addition, two ends of the Y-axis system 32 of this embodiment are provided with Y-axis end plates 3212, and the Y-axis end plates 3212 are fixed at two ends of the Y-axis system 32 through short plate supporting blocks 3213.

Fig. 4 is a structural diagram of the X-axis system 31, where the X-axis system 31 includes two X-axis supporting seats 311, two X-axis bases 312, and two X-axis driving devices, and the two X-axis supporting seats 311 are respectively and fixedly installed at two ends of a Y-axis sliding table 326 to realize Y-direction movement of the X-axis system 31. An X-axis base plate 314 is fixedly arranged in the middle of an X-axis support base 311, two X-axis guide rails 315 are arranged on one side of the X-axis base plate 314 in parallel, an X-axis driving device 313 is arranged between the two X-axis guide rails 315, the X-axis driving device is similar to a Y-axis system, the X-axis driving device is a linear motor and comprises an X-axis linear motor stator 316 and an X-axis linear motor rotor 317, the X-axis sliding block 318 is arranged on 2X-axis guide rails 315, the height of the X-axis sliding block 318 is consistent with that of the X-axis linear motor rotor 317, and X-axis sliding tables 319 are fixedly arranged on the upper portions of the X-axis linear motor rotor 317 and the X-axis sliding block 318. In this embodiment, an X-axis tow chain installation groove 3110 is provided at the other side of the X-axis bottom plate 314, and an X-axis tow chain 3111 is provided in the X-axis tow chain installation groove 3110. In this embodiment, two ends of the X-axis linear motor mover 317 are provided with anti-collision glue 3112, and two ends of the X-axis linear motor stator 316 are respectively provided with 1X-axis fixed anti-collision block 3113 configured to limit the movement of the X-axis linear motor mover 317. Still be provided with 3X axle photoelectric switches 3114 on X axle base 312, be provided with one X axle photoelectric switch response piece (not shown) corresponding with X axle photoelectric switch 3114 on X axle slip table 319 upper portion, the X axle photoelectric switch response piece removes along with the removal of X axle slip table 319, corresponds 3X axle photoelectric switches 3114 and is used for the inductive switch function. Specifically, in this embodiment, the 3X-axis photoelectric switches 3114 of the X-axis system 31 are respectively a positive limit switch, an origin point switch and a negative limit switch, and when the X-axis moves on the platform, the X-axis photoelectric switch sensing plate fixed on the X-axis sliding table 319 also moves along with the movement.

As an alternative, in this embodiment, the positions of the 3X-axis photoelectric switches 3114 on the X-axis base 312 are adjustable, that is, the connection mode is a detachable fixed connection or a slidable connection, if the connection mode is a slidable connection, the function can be realized by arranging corresponding guide rails on the X-axis base 312, which is a conventional arrangement, and corresponding structural pictures are not shown in this embodiment.

In addition, the two ends of the X-axis system 31 of the present embodiment are provided with X-axis end plates 313, and the X-axis end plates 313 are fixed at the two ends of the X-axis system 31. The Z-axis support base 331 is fixed to the X-axis slide table 319, and an X-axis line protection groove 3115 is provided in an upper portion of the Z-axis support base 331.

Fig. 5 and 10 are structural diagrams of the Z-axis system 33 and the imaging device 5, the Z-axis system 33 includes a Z-axis support base 331, a Z-axis base 332, a Z-axis driving system and a Z-axis adapter plate 333, the Z-axis support base 331 is fixed on the X-axis sliding table 319 to enable X/Y movement of the Z-axis system 33, the Z-axis support base 331 is fixedly connected with one side of the Z-axis base 332, and the other side of the Z-axis base 332 is the Z-axis driving system. The Z-axis base 332 is further provided with 3Z-axis photoelectric switches 338, the Z-axis sliding table 337 is provided with a Z-axis photoelectric switch sensing piece 339 corresponding to the Z-axis photoelectric switches 338, the Z-axis photoelectric switch sensing piece 339 moves along with the movement of the Z-axis sliding table 337, and the corresponding 3Z-axis photoelectric switches 338 are used for sensing switch functions. Specifically, in this embodiment, the 3Z-axis photoelectric switches 338 of the Z-axis system 33 are respectively a positive limit switch, an origin point switch and a negative limit switch, and when the Z-axis moves on the platform, the Z-axis photoelectric switch sensing piece 339 fixed on the Z-axis sliding table 337 also moves along with the Z-axis photoelectric switch sensing piece.

As an alternative, in this embodiment, the positions of the 3Z-axis photoelectric switches 338 on the Z-axis base 332 are adjustable, that is, the connection mode is a detachable fixed connection or a slidable connection, if the connection mode is a slidable connection, the function can be realized by arranging corresponding guide rails on the Z-axis base 332, which is a conventional arrangement, and corresponding structural pictures are not shown in this embodiment.

The imaging device 5 is disposed on the Z-axis system 33, the Z-axis system 33 is configured to drive the imaging device 5 to move along a Z-axis, in this embodiment: the imaging device 5 is driven by the XYZ shaft system 3 and can move along XYZ directions, specifically, in this embodiment, the lens fixing base 51 is fixed on the Z shaft connection plate 338, and the imaging device 5 is fixedly mounted on the Z shaft system 33 through the lens fixing base 51.

In this embodiment, the imaging device 5 includes a test camera 52 and a navigation camera 56 connected to each other. The lower end face of the test camera 52 is sequentially connected with a lens cone 53, an automatic zooming module 54 and a light source 55; the navigation camera 53 is connected to the auto zoom module 54. The automatic zooming module 54 can switch the magnification according to the width of the point to be measured in the graph, so that the real object image occupies a proper proportion in the visual field. The light source 55 can automatically switch between upper and lower light sources, adjust brightness, and realize light source self-adaptation. The light source 55 is an upper and lower combined annular light source. The PCB to be tested is placed under the imaging device 5, and the image is obtained by adjusting hardware such as light source brightness and lens magnification. And the software on the computer device 4 calculates the size to be measured according to the acquired image.

In this embodiment, a display (not shown) is also included, connected to the imaging device 5, and is optionally mounted on the frame.

In this embodiment, the Z-axis connection board 338 is further provided with an ultrasonic sensor 57, the ultrasonic sensor 57 is electrically connected to the computer device 4, and a single focusing height cannot be completely compatible due to the existence of PCBs with different thicknesses in a production site; when the thickness and height of the PCB are not consistent, the imaging device 5 is easy to impact the PCB, and serious damage is caused to the instrument. In this embodiment, the ultrasonic sensor 57 is used in cooperation with the imaging device 5, and the software can read the height value of the upper surface of the PCB and convert the height value into an automatic focusing parameter, so that the focusing efficiency can be improved, the height of the object to be detected can be detected in real time, and the Z-axis brake is started when the imaging device 5 reaches the lower limit of the threshold value, thereby avoiding collision.

Referring to fig. 6 and 7, in the present embodiment, the PCB fixing and adsorbing device 2 includes an adsorbing platform main body 21 and a platform frame 22 for fixing and placing the adsorbing platform main body 21.

The platform frame 22 is of a frame structure, and comprises a rectangular frame 24 formed by four adsorption platform fixing strips 23 connected end to end and directly used for placing the adsorption platform main body 21, and adsorption platform support columns 25 located at four corners of the rectangular frame 24, wherein the support columns 25 are used for supporting the rectangular frame 24 and the adsorption platform main body 21. Wherein, adopt bolted connection fixed between the adsorption platform fixed strip 23, adopt bolted connection fixed between support column 25 and rectangular frame 24, be aided with angle fixed block 26 and strengthen fixedly.

In this embodiment, the supporting column 25 is fixed on the bottom plate 321 of the Y-axis system 32, the height of the supporting column 25 is smaller than the height of the X-axis supporting seat 311, and the width of the adsorption platform main body 21 is smaller than the distance between the outermost Y-axis guide rails 324 of the Y-axis system 32, that is, the adsorption platform main body 21 is fixed on the bottom plate 321 through the platform frame 22 and located between the Y-axis system 32 and the X-axis system 31.

The adsorption platform body 21 in this embodiment includes an adsorption area 27 and a cover plate 28, and the adsorption area 27 is composed of an adsorption plate 29 on the surface, a sealing cover 210 in the middle, an air-receiving pipe 211 in the lower part, and an air-extracting device 214 communicated with the air-receiving pipe 211. The surface of the adsorption plate 29 is uniformly provided with air suction holes 212, the sealing cover 210 is provided with an opening communicated with the air receiving pipe 211, the sealing cover 210 is fixed at the lower part of the adsorption plate 29, if the air suction holes 212 and the opening communicated with the air receiving pipe 211 are sealed, a sealed space is formed between the sealing cover 210 and the adsorption plate 29, and in order to improve the sealing effect, the fixing part of the sealing cover 210 and the adsorption plate 29 is provided with a sealing measure, such as a sealing ring.

By adopting the structure, the air suction hole 212 is connected with the air extractor 214 through the sealing area and the air receiving pipe 211, so that the adsorption plate 29 on the surface of the adsorption area 27 has adsorbability, the PCB to be measured is adsorbed on the surface of the adsorption plate 29, and the PCB is uniformly adsorbed at the moment.

Connect tuber pipe 211 to adopt rectangular shape, be equipped with threely, even, set up side by side on sealed lid 210, with sealed lid 210 bolt fastening, correspond every sealed lid 210 position that connects tuber pipe 211, be equipped with the opening with airtight space intercommunication, the preferred 12 openings 214 that evenly are equipped with of this embodiment, every contact fixed area is equipped with 4 openings 214, for strengthening the adsorption effect, connect tuber pipe 211 and sealed lid 210 fixed part to be equipped with sealed measure, like the sealing washer.

In order to better limit the position of the PCB to be side, the surface of the absorption plate 29 is further fixedly provided with barrier strips 213, and the barrier strips 213 are uniformly arranged in the remaining three circumferential directions except the circumferential direction in which the absorption plate 29 contacts the cover plate 28.

In conclusion, the PCB fixing and adsorbing device 2 adopts a vacuum adsorption mode, reliable adsorption of the PCB can be guaranteed, the phenomena of middle protrusion, edge warping, air leakage and the like are effectively avoided, and detection precision and efficiency are improved.

In the measurement device in this embodiment, XYZ axis system 3, photoelectric sensing system and computer device 4 constitute PCB board linewidth line distance measurement origin reset system, wherein, photoelectric switch and photoelectric switch sensing piece in X axis system, Y axis system and Z axis system constitute PCB board linewidth line distance measurement device's photoelectric sensing system, and the photoelectric switch of every system all includes positive limit, origin, negative limit switch, the photoelectric sensing system can realize PCB board linewidth line distance measurement device XYZ system's inductive switch, response reset and induction location function, and in this embodiment, this function concrete performance is:

(1) along with the movement of the X axis/Y axis/Z axis, when the corresponding photoelectric switch senses the induction sheet, a trigger signal is sent to the computer device 4, and the software of the computer device 4 displays the trigger state. For example, when the sensing piece touches a positive limit photoelectric switch, the software can prompt that the corresponding shaft triggers the positive limit, and the computer device 4 can give an alarm and stop the movement of the X-axis/Y-axis/Z-axis.

(2) When the control computer device 4 carries out X-axis/Y-axis/Z-axis reset, the X-axis/Y-axis/Z-axis simultaneously moves to the positive limit, when the positive limit photoelectric switch is triggered, the X-axis/Y-axis/Z-axis returns to the original point photoelectric switch, when the original point photoelectric switch is triggered, the X-axis/Y-axis/Z-axis stops moving, and then the reset is completed.

(3) When the three-axis driver of the XYZ system is debugged, how many pulses are sent by the motion control card, that is, how much distance the X-axis/Y-axis/Z-axis moves correspondingly is set in the computer device 4, then the computer device 4 feeds back the number of pulses actually moved, and whether the sent pulses and the fed-back pulses are positioned or not is determined.

The embodiment discloses a PCB line width and line distance measurement origin resetting system and a PCB line width and line distance measurement device using the same, wherein the PCB line width and line distance measurement origin resetting system is also suitable for PCB line width and line distance measurement devices of other different structures, and the measurement device shown in the embodiment is only an optimal application example.

Claims (8)

1. The utility model provides a PCB board linewidth line spacing measurement initial point reset system which characterized in that includes:

an XYZ axis system configured to drive a measuring lens to move above a point to be measured of a PCB to be measured, the XYZ axis system comprising: an X-axis system, a Y-axis system and a Z-axis system;

the photoelectric sensing system comprises photoelectric switches and photoelectric switch sensing pieces which are respectively arranged on an X-axis system, a Y-axis system and a Z-axis system, wherein the X-axis system, the Y-axis system and the Z-axis system are respectively provided with 3 photoelectric switches and 1 photoelectric switch sensing piece, and the 3 photoelectric switches are a positive limit photoelectric switch, an original point photoelectric switch and a negative limit photoelectric switch;

a computer device;

wherein, the photoelectric sensing system and the XYZ axis system are electrically connected with the computer device.

2. The PCB board line width distance measurement origin reset system according to claim 1, wherein the Y-axis system comprises a base plate and a Y-axis driving device arranged on the base plate, the Y-axis driving device is a Y-axis linear motor, the Y-axis linear motor comprises a Y-axis linear motor stator and a Y-axis linear motor rotor, a concave portion is arranged in the middle of the base plate, the Y-axis linear motor stator is an elongated long stator arranged in the concave portion, two Y-axis guide rails are uniformly arranged on the base plate on two sides of the Y-axis linear motor stator, a Y-axis sliding block is arranged on each Y-axis guide rail, the height of the Y-axis sliding block is consistent with the height of the Y-axis linear motor rotor protruding out of the base plate, and Y-axis sliding tables are fixedly arranged on the upper portions of the Y-axis linear motor rotor and the Y-axis sliding blocks.

3. The PCB board linewidth line spacing measurement origin reset system of claim 2, characterized in that, Y axle system is provided with Y axle photoelectric switch, Y axle photoelectric switch passes through the photoelectric switch guide rail and sets up on the bottom plate at Y axle linear electric motor stator both ends, the photoelectric switch guide rail is fixed on the bottom plate, with Y axle guide rail parallel arrangement, Y axle photoelectric switch can slide on the photoelectric switch guide rail, is provided with a Y axle photoelectric switch response piece corresponding with Y axle photoelectric switch in Y axle slip table bottom.

4. The PCB board linewidth line spacing measurement origin reset system of claim 2, characterized in that the X-axis system comprises two X-axis supporting seats, two X-axis bases and two X-axis driving devices, wherein the two X-axis supporting seats are respectively and fixedly arranged at two ends of the Y-axis sliding table, an X-axis base plate is fixedly arranged in the middle of the X-axis supporting seat, two X-axis guide rails are arranged in parallel at one side of the X-axis base plate, the X-axis driving device is arranged between the two X-axis guide rails, the X-axis driving device is a linear motor, the X-axis driving device comprises an X-axis linear motor stator and an X-axis linear motor rotor which are arranged between the two X-axis guide rails, X-axis sliding blocks are arranged on the 2X-axis guide rails, and the X-axis sliding table is fixedly arranged on the upper portions of the X-axis linear motor rotor and the X-axis sliding block.

5. The PCB board linewidth line spacing measurement origin reset system of claim 4, wherein an X-axis photoelectric switch is further arranged on the X-axis base, and an X-axis photoelectric switch sensing piece corresponding to the X-axis photoelectric switch is arranged on the upper portion of the X-axis sliding table.

6. The PCB board linewidth line spacing measurement origin reset system of claim 4, characterized in that the Z-axis system comprises a Z-axis support base, a Z-axis drive system and a Z-axis adapter plate, the Z-axis support base is fixed on the X-axis sliding table, the Z-axis support base is fixedly connected with one side of the Z-axis base, the other side of the Z-axis base is provided with the Z-axis drive system, the Z-axis drive system is a rotating motor, the Z-axis drive system comprises a motor main body, a motor side cover and a motor upper cover which is arranged in parallel with the Z-axis base, the motor upper cover is provided with the Z-axis sliding table, one end of the Z-axis sliding table is connected with the motor main body output end of the rotating motor, Z-direction movement of the Z-axis sliding table is realized, and the Z-axis adapter plate is fixed on the other side of the Z-axis sliding table.

7. The PCB board linewidth line spacing measurement origin reset system of claim 6, wherein a Z-axis photoelectric switch is further arranged on the Z-axis base, a Z-axis photoelectric switch sensing piece corresponding to the Z-axis photoelectric switch is arranged on the Z-axis sliding table, and the Z-axis photoelectric switch sensing piece moves along with the movement of the Z-axis sliding table.

8. The system of any one of claims 1 to 7, wherein the PCB to be tested is fixedly disposed, and the PCB to be tested does not move with the movement of the XYZ system.

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