CN211206280U - Drilling copper plating defect detector for printed circuit board - Google Patents
Drilling copper plating defect detector for printed circuit board Download PDFInfo
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- CN211206280U CN211206280U CN201921644896.1U CN201921644896U CN211206280U CN 211206280 U CN211206280 U CN 211206280U CN 201921644896 U CN201921644896 U CN 201921644896U CN 211206280 U CN211206280 U CN 211206280U
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Abstract
The utility model relates to a printed circuit board's drilling copper facing defect's apparatus technical field provides a printed circuit board's drilling copper facing defect detects machine 100, include: the printed circuit board loading unit 200 includes a loading module for placing the printed circuit board and a longitudinal axis movement driving module; the longitudinal axis motion driving module is in linkage connection with the loading module; the image acquisition unit 300 comprises an image acquisition module, wherein the image acquisition module acquires an image of the printed circuit board and sends image information of the image to an identification module; an identification unit 400 including an identification module and a display module; the identification module is in communication connection with the image acquisition module, and the display module is in communication connection with the identification module; the control unit 500 includes a controller, and the controller is respectively connected to the pcb loading unit, the image capturing unit, and the recognition unit in a communication manner.
Description
Technical Field
The utility model relates to a printed circuit board's drilling copper facing defect's apparatus technical field especially relates to a printed circuit board's drilling copper facing defect detects machine.
Background
Whether the drilling copper plating of the printed circuit board has the defect in the prior art is detected by naked eyes of workers, so that the operation cost is high, the manual identification efficiency is low, the eye hygiene and the eyesight of the workers are easily damaged, and the problems are accompanied by various adverse factors such as difficulty in recruitment of enterprises, instability of the workers, long new engineering period and the like.
In view of the above, the conventional technique for detecting defects of copper plating in holes of printed circuit boards is inconvenient and defective in practical use, and thus needs to be improved.
SUMMERY OF THE UTILITY MODEL
To foretell defect, the utility model aims to provide a printed circuit board's drilling copper facing defect detecting machine has realized automatic operation mode, has improved product quality's qualification rate, stability and reliability, has promoted the production output in the unit interval.
In order to achieve the above object, the present invention provides a copper plating defect detecting machine 100 for a drilled hole of a printed circuit board, comprising:
a printed circuit board loading unit 200 including a loading module for placing the printed circuit board and a longitudinal axis movement driving module; the longitudinal axis motion driving module is in linkage connection with the loading module; the longitudinal axis motion driving module drives the loading module to move along a longitudinal axis;
an image collecting unit 300 including an image collecting module which collects an image of the printed circuit board and transmits image information of the image to an identification module;
an identification unit 400 including an identification module and a display module; the identification module is in communication connection with the image acquisition module, receives the image information and identifies whether the printed circuit board has defects according to the image information, and if the printed circuit board has defects, first identification result information is sent to the display module; if the defect does not exist, second identification result information is sent to the display module; the display module is in communication connection with the identification module and displays a first identification result or a second identification result according to the received first identification result information or second identification result information;
the control unit 500 comprises a controller, the controller is respectively in communication connection with the printed circuit board loading unit, the image acquisition unit and the identification unit, sends a preset control instruction to the printed circuit board loading unit, the image acquisition unit and the identification unit, and controls the printed circuit board loading unit, the image acquisition unit and the identification unit to execute corresponding operations.
According to the drilling copper plating defect detecting machine 100 of the printed circuit board, the loading module comprises:
a first mold frame 8 provided with a first glass plate 9 on the bottom side thereof;
a second mold frame 6 having a second glass plate 7 provided on the top surface thereof;
the first mold frame 8 is arranged at the top of the second mold frame 6, one end of the first mold frame 8 is hinged with one end of the second mold frame 6 through a rotating shaft, and the first mold frame 8 is turned over by taking the rotating shaft as a shaft;
the longitudinal axis motion driving module includes:
a first guide rail 2 on which a first sliding block is arranged;
the first lead screw 3 is arranged along a longitudinal axis; the first screw rod nut is slidably sleeved on the first screw rod 3;
the second die frame 6 is connected to the top surface of the first lead screw nut and the top surface of the first sliding block;
and the first motor 5 is connected with the first screw rod 3 through a first coupler 4.
According to the drilling and copper plating defect detecting machine 100 for the pcb, the pcb loading unit 200 further includes:
the first support frame 1 is used for supporting the loading module and the longitudinal shaft motion driving module, and the first guide rail 2 is arranged on the top surface of the first support frame 1;
the positioning module is used for acquiring the position information of the loading module, and comprises a magnetic grid ruler 11 and a reading head 13, wherein the magnetic grid ruler 11 is arranged on the first support frame 1 or the first guide rail 2; the reading head 13 is arranged on the second mold frame 6; the reading head 13 is in communication connection with the controller and sends the position information to the controller;
the first origin point loop module comprises a first inductor 12 and a first induction sheet 14, wherein the first inductor 12 and the first induction sheet 14 are respectively arranged on the first support frame 1 and the second mold frame 6; when the loading module is located at a first initial position, the first sensor 12 senses the first sensing piece 14, and the first sensor 12 sends first initial position information to the controller;
and the frame opening cylinder 10 is in communication connection with the controller, one end of the frame opening cylinder is connected to the first mold frame 8, and the other end of the frame opening cylinder is connected to the second mold frame 6 and used for pushing the first mold frame 8 to turn upwards or downwards.
According to the drilling copper plating defect detecting machine 100 of the printed circuit board, the drilling copper plating defect detecting machine further includes a cross shaft feeding movement unit 600 including:
the supporting frame is a square body and is formed by mutually connecting two vertically arranged movable cross beam plates 17 and two vertically arranged cross beam end plates 18;
a second guide rail 19 provided on one of the movable cross beam plates 17 in the transverse axis direction and provided with a second slidable block thereon;
the second screw rod 20 and a second screw rod nut, wherein the second screw rod 20 is arranged along the transverse shaft; the second screw rod nut is slidably sleeved on the second screw rod 20;
the second motor 22 is connected with the second lead screw 20 through a second coupler 21, and the second motor 22 is in communication connection with the controller;
a slide backing plate 23 connected to the second slide and to the second lead screw nut;
the large carriage 24 is arranged on the sliding block backing plate 23;
the image acquisition unit is mounted on the carriage 24.
According to the machine 100 for detecting defects of drilling and copper plating of a printed circuit board, the transverse axis feeding unit 600 further comprises:
the stroke end detection module comprises a second sensor 26 and a second sensing piece 25, the second sensor 26 and the second sensing piece 25 are respectively arranged on the carriage 24 and the supporting frame, when the carriage 24 runs to an end position, the second sensor 26 senses the second sensing piece 25, and the second sensor 26 sends end position information to the controller;
and the second support frame comprises an upper shell 15 and an upper frame 16, wherein the upper frame 16 is arranged inside the upper shell 15, and the support frame is arranged on the upper frame 16.
According to the machine 100 for detecting defects of drilling and copper plating of the printed circuit board, the image acquisition unit further comprises a position adjustment module, which is installed on the carriage 24 and comprises:
a transverse carriage 27 in a plate shape;
a first gusset plate 28 and a second gusset plate 281, wherein the first gusset plate 28 is arranged at the left end of the cross planker 27; the second gusset plate 281 is arranged at the right end of the transverse carriage 27;
a first camera slide plate 29 and a second camera slide plate 291 movably disposed on the first gusset plate 28 and the second gusset plate 281, respectively;
a first camera mounting plate 30 and a second camera mounting plate 301, the first camera mounting plate 30 being connected to the right side of the first camera slide 29; the second camera mounting plate 301 is connected to the left side of the second camera slide 291;
a camera moving plate 31 having both ends connected to the first camera mounting plate 30 and the second camera mounting plate 301, respectively;
a first camera support plate 32 and a second camera support plate 321, both rotatably disposed on the camera moving plate 31;
a first camera support 33 and a second camera support 331 movably disposed on the first camera support plate 32 and the second camera support plate 321, respectively, for adjusting a distance between the first camera support 33 and the second camera support 331; the image acquisition module comprises a first camera set 34 and a second camera set 341, which are respectively arranged on the first camera support 33 and the second camera support 331; the first camera group 34 is composed of a plurality of cameras 53; the second camera group 341 is composed of a plurality of cameras 53;
a third guide rail 42 and a fourth guide rail 421 vertically disposed on the first gusset plate 28 and the second gusset plate 281, respectively; a slidable third sliding block is arranged on the third guide rail 42, and the third sliding block is connected with the first camera sliding plate 29; a slidable fourth sliding block is arranged on the fourth guide rail 421, and the fourth sliding block is connected with the second camera sliding plate 291;
the third screw rod 41 is vertically arranged; the third screw rod nut is slidably sleeved on the third screw rod 41; the third screw nut is connected with the first camera slide 29;
the fourth screw rod 411 and a fourth screw rod nut, wherein the fourth screw rod 411 is vertically arranged; the fourth lead screw nut is slidably sleeved on the fourth lead screw 411; the fourth screw nut is connected with the second camera sliding plate 291;
the third motor 35 is installed in the middle of the transverse carriage 27, the third motor 35 is connected with a first synchronous pulley 36, the first synchronous pulley 36 is connected with a second synchronous pulley 38 through a synchronous belt 37, the second synchronous pulley 38 is connected with a worm 39, and the left end and the right end of the worm 39 are respectively connected with a first worm wheel 40 and a second worm wheel 401; the first worm gear 40 is connected with the third screw rod 41; the second worm gear 401 is coupled with the fourth lead screw 411; the third motor 35 drives the first camera slide plate 29 and the second camera slide plate 291 to move up and down in the vertical direction.
According to printed circuit board's drilling copper facing defect detecting machine, the image acquisition unit still includes:
a second origin loop module, including a third sensor 44 and a third sensing piece 43, where the third sensor 44 and the third sensing piece 43 are respectively disposed on the first camera slide 29 and the first supporting plate 28; when the first camera slide 29 is located at the second initial position, the third sensor 44 senses the third sensing piece 43, and the third sensor 44 sends second initial position information to the controller;
a third origin loop module including a fourth inductor 441 and a fourth induction sheet 431, wherein the fourth inductor 441 and the fourth induction sheet 431 are respectively disposed on the second camera sliding plate 291 and the second gusset plate 281; when the second camera slide 291 is located at the third initial position, the fourth sensor 441 senses the fourth sensing piece 431, and the fourth sensor 441 sends third initial position information to the controller.
According to the drilling copper plating defect detection machine 100 for the printed circuit board, the drilling copper plating defect detection machine further comprises a light source irradiation unit 700 for irradiating the printed circuit board, wherein the light source irradiation unit comprises an L ed light source box 45, a light source irradiation angle adjuster 46 for adjusting the angle of the L ed light source box 45, a light source bracket 47 and a light source controller 48;
the L ed light box 45 is arranged on the light source irradiation angle adjuster 46;
the light source irradiation angle adjuster 46 is disposed on the light source bracket 47, and the light source bracket 47 supports the light source irradiation angle adjuster 46;
the light source controller 48 is in communication connection with the L ed light source box 45, the light source controller 48 is in communication connection with the controller, and the light source controller 48 controls the L ed light source box 45 to be opened or closed according to instruction information sent by the controller.
According to the detection machine 100 for the defect of copper plating in the drilled hole of the printed circuit board, the identification module comprises a PC host computer 50, an operating system 51 and identification software 52 are installed in the PC host computer 50, and the identification software 52 is configured to be executed by the PC host computer 50 to realize the purpose of identifying whether the printed circuit board has defects according to the image information;
the display module is a display 49;
the controller includes a P L C system 55.
According to the drilling copper plating defect detection machine 100 of the printed circuit board, the drilling copper plating defect detection machine further comprises a control panel which is arranged on the outer surface of the drilling copper plating defect detection machine; the control panel is provided with input keys and/or a touch screen 54, and is in communication connection with the controller.
The utility model discloses a printed circuit board's drilling copper facing defect detecting machine 100 loads printed circuit board through printed circuit board loading unit 200, and image acquisition unit 300 gathers printed circuit board's image, and with the image information of image sends identification module, identification unit 400 the identification module receives the image information and according to image information discerns whether there is a defect in printed circuit board, if there is a defect, send first identification result information to identification unit 400 the display module; if the defect does not exist, second identification result information is sent to the display module; the display module is in communication connection with the identification module, displays a first identification result or a second identification result according to the received first identification result information or second identification result information, and a user can know whether the printed circuit board has a defect or not according to the first identification result or the second identification result; and the control unit 500 comprises a controller, and the units execute corresponding operations under the control of the controller to realize automatic control. Therefore, the utility model discloses a printed circuit board's drilling copper facing defect detecting machine has realized automatic operation mode, has improved product quality's qualification rate, stability and reliability, has promoted the production output in the unit interval.
Drawings
FIG. 1 is a schematic structural view of a drilling and copper plating defect detecting machine for a printed circuit board according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a printed circuit board loading unit of a printed circuit board according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a transverse-axis feeding movement unit of a printed circuit board according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an image capturing unit of a printed circuit board according to an embodiment of the present invention;
fig. 5 is a schematic view illustrating a structure and a connection relationship of a light source irradiation unit of a printed circuit board according to an embodiment of the present invention;
fig. 6 is a schematic diagram of the structure and connection relationship of the identification unit and other components of the printed circuit board according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, in a first embodiment of the present invention, there is provided a copper plating defect detecting machine 100 for a drilled hole of a printed circuit board, comprising:
a printed circuit board loading unit 200 including a loading module for placing the printed circuit board and a longitudinal axis movement driving module; the longitudinal axis motion driving module is in linkage connection with the loading module; the longitudinal axis motion driving module drives the loading module to move along a longitudinal axis;
an image collecting unit 300 including an image collecting module which collects an image of the printed circuit board and transmits image information of the image to an identification module;
an identification unit 400 including an identification module and a display module; the identification module is in communication connection with the image acquisition module, receives the image information and identifies whether the printed circuit board has defects according to the image information, and if the printed circuit board has defects, first identification result information is sent to the display module; if the defect does not exist, second identification result information is sent to the display module; the display module is in communication connection with the identification module and displays a first identification result or a second identification result according to the received first identification result information or second identification result information;
the control unit 500 comprises a controller, the controller is respectively in communication connection with the printed circuit board loading unit, the image acquisition unit and the identification unit, sends a preset control instruction to the printed circuit board loading unit, the image acquisition unit and the identification unit, and controls the printed circuit board loading unit, the image acquisition unit and the identification unit to execute corresponding operations.
In this embodiment, the drilling copper plating defect inspection machine 100 for the printed circuit board comprises a printed circuit board loading unit 200, an image capturing unit 300, an identifying unit 400, and a control unit 500, wherein the printed circuit board loading unit 200 comprises a loading module for loading the printed circuit board, and the loading module is driven by the longitudinal axis movement driving module; when the detection is performed, the loading module performs reciprocating scanning motion along a longitudinal axis, the image acquisition module of the image acquisition unit 300 acquires an image of the printed circuit board and sends image information of the image to the identification module, the identification module can identify whether the printed circuit board has a defect according to the image information, and if so, first identification result information is sent to the display module; if the defect does not exist, second identification result information is sent to the display module; the display module displays a first recognition result or a second recognition result according to the received first recognition result information or second recognition result information; the user can know whether the printed circuit board has defects according to the first identification result or the second identification result; the above units execute corresponding operations under the control of the controller of the control unit 500, thereby realizing automatic control and improving the working efficiency and quality.
Referring to fig. 2, in a second embodiment of the present invention, the loading module includes:
a first mold frame 8 provided with a first glass plate 9 on the bottom side thereof;
a second mold frame 6 having a second glass plate 7 provided on the top surface thereof;
the first mold frame 8 is arranged at the top of the second mold frame 6, one end of the first mold frame 8 is hinged with one end of the second mold frame 6 through a rotating shaft, and the first mold frame 8 is turned over by taking the rotating shaft as a shaft;
the longitudinal axis motion driving module includes:
a first guide rail 2 on which a first sliding block is arranged;
the first lead screw 3 is arranged along a longitudinal axis; the first screw rod nut is slidably sleeved on the first screw rod 3;
the second die frame 6 is connected to the top surface of the first lead screw nut and the top surface of the first sliding block;
and the first motor 5 is connected with the first screw rod 3 through a first coupler 4.
In this embodiment, the printed circuit board to be detected is placed above the second glass plate 7, the first mold frame 8 and the second mold frame 6 are closed, and the printed circuit board to be detected is clamped by the first glass plate 9 and the second glass plate 7; when the detection is started, the longitudinal axis motion driving module is required to drive the loading module to reciprocate along the longitudinal axis, so that the first motor 5 is arranged to drive the first screw rod 3, the first screw rod nut sleeved on the first screw rod 3 is connected with the second die frame 6, the first screw rod 3 and the first screw rod nut are matched to convert rotary motion into linear motion, and the loading module follows the first screw rod nut to reciprocate along the longitudinal axis; to facilitate the movement of the loading module, a first guide rail 2 is provided, on which a first slide is slidably arranged, a second mould frame 6 being attached to the top surface of the first slide. The first glass plate 9 and the second glass plate 7 are transparent; the first mold frame 8 and the second mold frame 6 are made of a stainless steel material.
Referring to fig. 2, in a third embodiment of the present invention, the pcb loading unit 200 further includes:
the first support frame 1 is used for supporting the loading module and the longitudinal shaft motion driving module, and the first guide rail 2 is arranged on the top surface of the first support frame 1;
the positioning module is used for acquiring the position information of the loading module, and comprises a magnetic grid ruler 11 and a reading head 13, wherein the magnetic grid ruler 11 is arranged on the first support frame 1 or the first guide rail 2; the reading head 13 is arranged on the second mold frame 6; the reading head 13 is in communication connection with the controller and sends the position information to the controller;
the first origin point loop module comprises a first inductor 12 and a first induction sheet 14, wherein the first inductor 12 and the first induction sheet 14 are respectively arranged on the first support frame 1 and the second mold frame 6; when the loading module is located at a first initial position, the first sensor 12 senses the first sensing piece 14, and the first sensor 12 sends first initial position information to the controller;
and the frame opening cylinder 10 is in communication connection with the controller, one end of the frame opening cylinder is connected to the first mold frame 8, and the other end of the frame opening cylinder is connected to the second mold frame 6 and used for pushing the first mold frame 8 to turn upwards or downwards.
In this embodiment, the controller obtains the position information of the loading module through the positioning module, and sends a control instruction to the first motor 5 according to the position information to realize the control of the process of reciprocating motion of the loading module along the longitudinal axis; the first origin loop module is used for realizing a zero point correction function and an origin homing function, the first induction sheet 14 can move along with the second mold frame 6, and the first inductor 12 is fixed on the first support frame 1; the origin homing function is completed during initialization, and through the cooperation of the first inductor 12 and the first induction sheet 14, the loading module is moved to the first initial position during initialization, specifically, the controller controls the first motor 5 to work, the loading module moves, when the loading module moves to the first initial position, the first induction sheet 14 also moves to the position of the first inductor 12, the first inductor 12 induces the first induction sheet 14, the first inductor 12 sends first initial position information to the controller through an output electric signal, the controller stops the first motor 5 to work, so that the loading module is located at the first initial position, and a next procedure is waited to be executed; the opening and closing of the first mold frame 8 and the second mold frame 6 are realized through the frame opening air cylinder 10, and the operation of the frame opening air cylinder 10 is controlled by the controller. The zero point correction function is performed when the drilled copper plating defect inspection machine 100 operates to inspect its position and ensure it is correct.
Referring to fig. 1 and 3, in a fourth embodiment of the present invention, the apparatus for detecting copper plating defects in drilled holes further includes a cross shaft feeding movement unit 600, which includes:
the supporting frame is a square body and is formed by mutually connecting two vertically arranged movable cross beam plates 17 and two vertically arranged cross beam end plates 18;
a second guide rail 19 provided on one of the movable cross beam plates 17 in the transverse axis direction and provided with a second slidable block thereon;
the second screw rod 20 and a second screw rod nut, wherein the second screw rod 20 is arranged along the transverse shaft; the second screw rod nut is slidably sleeved on the second screw rod 20;
the second motor 22, the second motor 22 is connected with the second lead screw 20 through a second coupler 21; the second motor 22 is in communication with the controller;
a slide backing plate 23 connected to the second slide and to the second lead screw nut;
the large carriage 24 is arranged on the sliding block backing plate 23;
the image acquisition unit is mounted on the carriage 24.
In this embodiment, at the end of each scan frame, the horizontal axis feeding unit 600 drives the image capturing unit to perform a feeding motion along the horizontal axis, preferably, a feeding distance is equal to a frame width, and for a standard printed circuit board of 630 × 580 mm, the image capturing unit needs four scan frames to capture the image of the printed circuit board.
Referring to fig. 3, in a fifth embodiment of the present invention, the transverse-axis feeding moving unit 600 further includes:
the stroke end detection module comprises a second sensor 26 and a second sensing piece 25, the second sensor 26 and the second sensing piece 25 are respectively arranged on the carriage 24 and the supporting frame, when the carriage 24 runs to an end position, the second sensor 26 senses the second sensing piece 25, and the second sensor 26 sends end position information to the controller; the stroke end detection module detects whether the carriage 24 runs to an end position through the cooperation of the second sensor 26 and the second sensing strip 25, and when the carriage 24 runs to the end position, the controller controls the second motor 22 to stop working to wait for executing a next program;
and the second support frame comprises an upper shell 15 and an upper frame 16, wherein the upper frame 16 is arranged inside the upper shell 15, and the support frame is arranged on the upper frame 16.
Referring to fig. 4, in a sixth embodiment of the present invention, the image capturing unit further includes a position adjusting module, which is installed on the carriage 24 and includes:
a transverse carriage 27 in a plate shape;
the first gusset plate 28 and the second gusset plate 281 are both plate-shaped, and the first gusset plate 28 is arranged at the left end of the transverse planker 27; the second gusset plate 281 is arranged at the right end of the transverse carriage 27;
a first camera slide plate 29 and a second camera slide plate 291, each having a plate shape, movably disposed on the first gusset plate 28 and the second gusset plate 281, respectively;
a first camera mounting plate 30 and a second camera mounting plate 301, both having a plate shape, the first camera mounting plate 30 being connected to the right side of the first camera slide plate 29; the second camera mounting plate 301 is connected to the left side of the second camera slide 291;
a camera moving plate 31 having a plate shape and having both ends connected to the first camera mounting plate 30 and the camera mounting plate
A second camera mounting plate 301;
the first camera support plate 32 and the second camera support plate 321 are both plate-shaped and rotatably disposed on the camera moving plate 31;
the first camera support 33 and the second camera support 331 are both plate-shaped and movably disposed on the first camera support plate 32 and the second camera support plate 321, respectively, so as to adjust a distance between the first camera support 33 and the second camera support 331; the image acquisition module comprises a first camera set 34 and a second camera set 341, which are respectively arranged on the first camera support 33 and the second camera support 331; the first camera group 34 is composed of a plurality of cameras 53; the second camera group 341 is composed of a plurality of cameras 53; preferably, the first camera group 34 is provided with 4 cameras 53 and the second camera group 341 is provided with 4 cameras 53. The camera 53 is preferably a CCD camera.
A third guide rail 42 and a fourth guide rail 421 vertically disposed on the first gusset plate 28 and the second gusset plate 281, respectively; a slidable third sliding block is arranged on the third guide rail 42, and the third sliding block is connected with the first camera sliding plate 29; a slidable fourth sliding block is arranged on the fourth guide rail 421, and the fourth sliding block is connected with the second camera sliding plate 291;
the third screw rod 41 is vertically arranged; the third screw rod nut is slidably sleeved on the third screw rod 41; the third screw nut is connected with the first camera slide 29;
the fourth screw rod 411 and a fourth screw rod nut, wherein the fourth screw rod 411 is vertically arranged; the fourth lead screw nut is slidably sleeved on the fourth lead screw 411; the fourth screw nut is connected with the second camera sliding plate 291;
a third motor 35, preferably a Z-axis motor, mounted in the middle of the carriage 27, wherein the third motor 35 is connected to a first synchronous pulley 36, the first synchronous pulley 36 is connected to a second synchronous pulley 38 through a synchronous belt 37, the second synchronous pulley 38 is connected to a worm 39, and the left and right ends of the worm 39 are respectively connected to a first worm wheel 40 and a second worm wheel 401; the first worm gear 40 is connected with the third screw rod 41; the second worm gear 401 is coupled with the fourth lead screw 411; the third motor 35 drives the first camera slide plate 29 and the second camera slide plate 291 to move up and down in the vertical direction. Preferably, the first timing pulley 36 is smaller than the second timing pulley 38.
In this embodiment, the position adjustment module is used to implement a scan angle adjustment function, a distance adjustment function, and the like of the image acquisition module, where the scan angle adjustment function is to manually adjust the tilt angles of the first camera support plate 32 and the second camera support plate 321 in the commissioning phase, so that the included angle between each two cameras 53 on the first camera set 34 and each two cameras 53 on the second camera set 341 meets the design value; the function of the distance adjustment is to move the first camera support 33 and the second camera support 331 to reach the distance between the camera 53 of the first camera set 34 and the camera 53 of the second camera set 341. The zoom lens of the camera 53 is configured to achieve field-of-view adjustment. The third motor 35 works under the control of the controller, and drives the cameras 53 on the first camera set 34 and the second camera set 341 respectively arranged on the first camera support 33 and the second camera support 331 to move up and down under the mutual connection of the boards, so that the distances between the first camera set 34 and the second camera set 341 relative to the printed circuit board can be adjusted, and the focal length can be automatically adjusted according to the thicknesses of different printed circuit boards, thereby achieving the purpose of clear imaging. Meanwhile, a manual focus adjusting component is arranged, the manual focus is achieved by manually adjusting the relative position of the transverse carriage 27 on the slide block backing plate 23, specifically, the manual focus adjusting component is arranged in screw holes at different positions to achieve the purpose of adjusting the distance, so as to meet the requirement of a printed circuit board with special thickness beyond the automatic focusing range.
Referring to fig. 4, in a seventh embodiment of the present invention, the image capturing unit further includes:
a second origin loop module, including a third sensor 44 and a third sensing piece 43, where the third sensor 44 and the third sensing piece 43 are respectively disposed on the first camera slide 29 and the first supporting plate 28; when the first camera slide 29 is located at the second initial position, the third sensor 44 senses the third sensing piece 43, and the third sensor 44 sends second initial position information to the controller;
a third origin loop module including a fourth inductor 441 and a fourth induction sheet 431, wherein the fourth inductor 441 and the fourth induction sheet 431 are respectively disposed on the second camera sliding plate 291 and the second gusset plate 281; when the second camera slide 291 is located at the third initial position, the fourth sensor 441 senses the fourth sensing piece 431, and the fourth sensor 441 sends third initial position information to the controller.
Referring to fig. 1 and 5, in an eighth embodiment of the present invention, the defect detector for copper plating in drilling holes further comprises a light source irradiation unit 700 for irradiating the printed circuit board, wherein the light source irradiation unit comprises L ed (L light-Emitting Diode) light source box 45, a light source irradiation angle adjuster 46 for adjusting the angle of the L ed light source box 45, a light source bracket 47 and a light source controller 48, and the light source irradiation unit 700 is used for treating the projection light source of the printed circuit board to be detected and achieving the purpose of controlling the angle and the illumination of the projection light source.
The L ed light box 45 is arranged on the light source irradiation angle adjuster 46;
the light source irradiation angle adjuster 46 is disposed on the light source bracket 47, and the light source bracket 47 supports the light source irradiation angle adjuster 46;
the light source controller 48 is in communication connection with the L ed light source box 45, the light source controller 48 is in communication connection with the controller, and the light source controller 48 controls the L ed light source box 45 to be opened or closed according to instruction information sent by the controller.
Referring to fig. 6, in a ninth embodiment of the present invention, the identification module includes a PC host 50, in which an operating system 51 and identification software 52 are installed, the identification software 52 is configured to be executed by the PC host 50 to identify whether the printed circuit board has a defect according to the image information;
the display module is a display 49;
the Controller comprises a P L C (Programmable logic Controller) system 55, the motion relation and the machine state of each module are monitored by a P L C, a P L C system 55 consists of P L C hardware (a P L C body, various sensors and a P L C peripheral supporting circuit) and a P L C software program, and finally realizes the control of the motion of a loading module, the motion, the stop and the acceleration and deceleration of a camera 53, the control of the operation of the frame opening cylinder 10 realizes the closing or the opening of a first frame and a second frame and the on and off of a lamp in a L d light source box 45, the Controller preferably further comprises a motor Controller 56, the first motor 5, the second motor 22 and the third motor 35 are preferably a servo motor 57, the motor Controller is used for controlling and driving the first motor 5, the second motor 22 and the third motor 35 to rotate forwards and reversely, accelerate and decelerate and stop according to the instructions of the P L C system 55, and the servo motor Controller is not directly connected with a power supply so as to control the motor to be connected with the operation.
In the ninth embodiment of the present invention, the drilling copper plating defect detecting machine 100 further comprises a control panel disposed on the outer surface of the drilling copper plating defect detecting machine, the control panel is provided with input keys and/or a touch screen 54, the control panel is in communication connection with the controller, human-computer interaction is realized through the control panel, and a user sends an instruction to the P L C system 55 through the control panel.
The working process of the drilling and copper plating defect detecting machine 100 is as follows:
the loading module is operated to an operation position, namely a first initial position, and is in a complete state when the drilling copper plating defect detector 100 is started, the user operates the control panel to start an input key for opening the frame, the first mold frame 8 is turned upwards and opened, a printed circuit board to be detected is placed on the second mold frame 6, the user starts a working button on the operation panel, the first mold frame 8 and the second mold frame 6 are closed, the drilling copper plating defect detector 100 automatically enters a detection program, the loading module performs scanning motion along the longitudinal axis, the image acquisition module performs image acquisition and scanning, acquired image information is transmitted to the PC host computer 50 in real time, the identification software 52 performs correct and incorrect screening, a screening result is output to a screen of the display 49 for display, the camera 53 performs feeding motion along the transverse axis at the end of each scanning frame, a feeding distance is equal to one frame width, for a printed circuit board with the standard 630-35580 mm frame, four scanning frames are all acquired, after the acquisition is completed, the loading module returns to the first initial position, is automatically opened through the first opening cylinder 10, the printed circuit board to be detected, and the printed circuit board to be detected is taken out again, and the printed circuit board to be detected is repeatedly.
To sum up, the utility model discloses a printed circuit board's drilling copper facing defect detecting machine 100 loads printed circuit board through printed circuit board loading unit 200, and image acquisition unit 300 gathers printed circuit board's image, and with the image information of image sends identification module, identification unit 400 the identification module receive the image information and according to image information discernment printed circuit board whether has the defect, if there is the defect, then send first identification result information to identification unit 400 the display module; if the defect does not exist, second identification result information is sent to the display module; the display module is in communication connection with the identification module, displays a first identification result or a second identification result according to the received first identification result information or second identification result information, and a user can know whether the printed circuit board has a defect or not according to the first identification result or the second identification result; and the control unit 500 comprises a controller, and the units execute corresponding operations under the control of the controller to realize automatic control. Therefore, the utility model discloses a printed circuit board's drilling copper facing defect detecting machine has realized automatic operation mode, has improved product quality's qualification rate, stability and reliability, has promoted the production output in the unit interval.
Naturally, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit or essential attributes thereof, and it is intended that all such changes and modifications be considered as within the scope of the appended claims.
Claims (10)
1. A printed circuit board's drilling copper facing defect detection machine (100), characterized by, includes:
a printed circuit board loading unit (200) including a loading module for placing the printed circuit board and a longitudinal axis movement driving module; the longitudinal axis motion driving module is in linkage connection with the loading module; the longitudinal axis motion driving module drives the loading module to move along a longitudinal axis;
an image acquisition unit (300) comprising an image acquisition module which acquires an image of the printed circuit board and transmits image information of the image to an identification module;
an identification unit (400) comprising an identification module and a display module; the identification module is in communication connection with the image acquisition module, receives the image information and identifies whether the printed circuit board has defects according to the image information, and if the printed circuit board has defects, first identification result information is sent to the display module; if the defect does not exist, second identification result information is sent to the display module; the display module is in communication connection with the identification module and displays a first identification result or a second identification result according to the received first identification result information or second identification result information;
and the control unit (500) comprises a controller, the controller is respectively in communication connection with the printed circuit board loading unit, the image acquisition unit and the identification unit, sends a preset control instruction to the printed circuit board loading unit, the image acquisition unit and the identification unit, and controls the printed circuit board loading unit, the image acquisition unit and the identification unit to execute corresponding operations.
2. The printed circuit board drilled copper plating defect inspection machine (100) of claim 1,
the loading module includes:
a first mold frame (8) provided with a first glass plate (9) on the bottom side thereof;
a second mold frame (6) provided with a second glass plate (7) on the top surface thereof;
the first die frame (8) is arranged at the top of the second die frame (6), one end of the first die frame (8) is hinged with one end of the second die frame (6) through a rotating shaft, and the first die frame (8) is turned over by taking the rotating shaft as a shaft;
the longitudinal axis motion driving module includes:
the first guide rail (2) is provided with a first sliding block which can slide;
the first screw rod (3) and a first screw rod nut, wherein the first screw rod (3) is arranged along a longitudinal axis; the first screw rod nut is slidably sleeved on the first screw rod (3);
the second die frame (6) is connected to the top surface of the first screw rod nut and the top surface of the first sliding block;
the first motor (5), the first motor (5) with first lead screw (3) passes through first shaft coupling (4) hookup.
3. The printed circuit board drilling copper plating defect inspection machine (100) according to claim 2, wherein the printed circuit board loading unit (200) further comprises:
the first support frame (1) is used for supporting the loading module and the longitudinal shaft motion driving module, and the first guide rail (2) is arranged on the top surface of the first support frame (1);
the positioning module is used for acquiring the position information of the loading module and comprises a magnetic grid ruler (11) and a reading head (13), wherein the magnetic grid ruler (11) is arranged on the first support frame (1) or the first guide rail (2); the reading head (13) is arranged on the second mould frame (6); the reading head (13) is in communication connection with the controller and sends the position information to the controller;
the first origin point loop module comprises a first inductor (12) and a first induction sheet (14), wherein the first inductor (12) and the first induction sheet (14) are respectively arranged on the first support frame (1) and the second mold frame (6); when the loading module is located at a first initial position, the first sensor (12) senses the first sensing piece (14), and the first sensor (12) sends first initial position information to the controller;
and the frame opening cylinder (10) is in communication connection with the controller, one end of the frame opening cylinder is connected to the first mold frame (8), and the other end of the frame opening cylinder is connected to the second mold frame (6) and used for pushing the first mold frame (8) to turn upwards or downwards.
4. The machine (100) for detecting defects in drilled copper plating of printed circuit boards according to claim 3, characterized in that it further comprises a cross-axis feed motion unit (600) comprising:
the supporting frame is a square body and is formed by mutually connecting two vertically arranged movable cross beam plates (17) and two vertically arranged cross beam end plates (18);
a second guide rail (19) which is arranged on one of the movable cross beam plates (17) along the direction of the transverse shaft and is also provided with a second sliding block which can slide;
the second screw rod (20) and a second screw rod nut, wherein the second screw rod (20) is arranged along the transverse shaft; the second screw rod nut is sleeved on the second screw rod (20) in a sliding manner;
the second motor (22), the second motor (22) is connected with the second screw rod (20) through a second coupler (21); the second motor (22) is in communication connection with the controller;
a slide backing plate (23) attached to the second slide and to the second lead screw nut;
the large carriage (24) is arranged on the sliding block base plate (23);
the image acquisition unit is arranged on the large carriage (24).
5. The machine (100) for detecting defects in drilling copper plating of printed circuit boards according to claim 4, wherein said cross-axis feed motion unit (600) further comprises:
the stroke end detection module comprises a second sensor (26) and a second sensing piece (25), the second sensor (26) and the second sensing piece (25) are respectively arranged on the large carriage (24) and the supporting frame, when the large carriage (24) runs to an end position, the second sensor (26) senses the second sensing piece (25), and the second sensor (26) sends end position information to the controller;
and the second support frame comprises an upper shell (15) and an upper rack (16), the upper rack (16) is arranged inside the upper shell (15), and the support frame is arranged on the upper rack (16).
6. The machine (100) for detecting defects in drilling copper plating of printed circuit boards according to claim 5, characterized in that said image acquisition unit further comprises a position adjustment module, which is mounted on said carriage (24) and which comprises:
a transverse carriage (27) in a plate shape;
a first gusset plate (28) and a second gusset plate (281), wherein the first gusset plate (28) is arranged at the left end of the cross planker (27); the second gusset plate (281) is arranged at the right end of the transverse planker (27);
a first camera slide plate (29) and a second camera slide plate (291) movably disposed on the first gusset plate (28) and the second gusset plate (281), respectively;
a first camera mounting plate (30) and a second camera mounting plate (301), the first camera mounting plate (30) being connected to the right side of the first camera slide (29); the second camera mounting plate (301) is connected to the left side of the second camera sliding plate (291);
a camera moving plate (31) having both ends connected to the first camera mounting plate (30) and the second camera mounting plate (301), respectively;
a first camera support plate (32) and a second camera support plate (321) both rotatably disposed on the camera moving plate (31);
a first camera support (33) and a second camera support (331) movably disposed on the first camera support plate (32) and the second camera support plate (321), respectively, to adjust a distance between the first camera support (33) and the second camera support (331); the image acquisition module comprises a first camera set (34) and a second camera set (341) which are respectively arranged on the first camera support (33) and the second camera support (331); the first camera group (34) is composed of a plurality of cameras (53); the second camera group (341) is composed of a plurality of cameras (53);
a third guide rail (42) and a fourth guide rail (421) vertically disposed on the first gusset plate (28) and the second gusset plate (281), respectively; a slidable third sliding block is arranged on the third guide rail (42), and the third sliding block is connected with the first camera sliding plate (29); a slidable fourth sliding block is arranged on the fourth guide rail (421), and the fourth sliding block is connected with the second camera sliding plate (291);
the third screw rod (41) and a third screw rod nut, wherein the third screw rod (41) is vertically arranged; the third screw rod nut is sleeved on the third screw rod (41) in a sliding manner; the third screw nut is connected with the first camera slide plate (29);
the fourth screw rod (411) and a fourth screw rod nut are arranged, and the fourth screw rod (411) is arranged vertically; the fourth screw rod nut is slidably sleeved on the fourth screw rod (411); the fourth screw nut is connected with the second camera sliding plate (291);
the third motor (35) is mounted in the middle of the transverse carriage (27), the third motor (35) is connected with a first synchronous pulley (36), the first synchronous pulley (36) is connected with a second synchronous pulley (38) through a synchronous belt (37), the second synchronous pulley (38) is connected with a worm (39), and the left end and the right end of the worm (39) are respectively connected with a first worm wheel (40) and a second worm wheel (401); the first worm wheel (40) is coupled with the third screw rod (41); the second worm wheel (401) is coupled with the fourth screw rod (411); the third motor (35) drives the first camera slide plate (29) and the second camera slide plate (291) to move up and down in the vertical direction.
7. The machine (100) for detecting defects in drilling copper plating of printed circuit boards according to claim 6, wherein said image acquisition unit further comprises:
a second origin loop module including a third sensor (44) and a third sensing piece (43), wherein the third sensor (44) and the third sensing piece (43) are respectively disposed on the first camera slide plate (29) and the first gusset plate (28); when the first camera sliding plate (29) is located at the second initial position, the third sensor (44) senses the third sensing piece (43), and the third sensor (44) sends second initial position information to the controller;
a third origin loop module including a fourth inductor (441) and a fourth induction sheet (431), wherein the fourth inductor (441) and the fourth induction sheet (431) are respectively disposed on the second camera sliding plate (291) and the second gusset plate (281); when the second camera sliding plate (291) is located at a third initial position, the fourth sensor (441) senses the fourth sensing piece (431), and the fourth sensor (441) sends third initial position information to the controller.
8. The apparatus (100) for detecting defects in drilled copper plating of printed circuit boards as claimed in claim 7, further comprising a light source irradiation unit (700) for irradiating the printed circuit board, the light source irradiation unit comprising an L ed light source box (45), a light source irradiation angle adjuster (46) for adjusting the angle of the L ed light source box (45), a light source holder (47) and a light source controller (48);
the L ed light source box (45) is arranged on the light source irradiation angle adjuster (46);
the light source irradiation angle adjuster (46) is arranged on the light source bracket (47), and the light source bracket (47) supports the light source irradiation angle adjuster (46);
the light source controller (48) is in communication connection with the L ed light source box (45), the light source controller (48) is in communication connection with the controller, and the light source controller (48) controls the L ed light source box (45) to be opened or closed according to instruction information sent by the controller.
9. The printed circuit board drilled copper plating defect inspection machine (100) of claim 8,
the identification module comprises a PC host (50) internally provided with an operating system (51) and identification software (52), wherein the identification software (52) is configured to be executed by the PC host (50) to realize the identification of whether the printed circuit board has defects according to the image information;
the display module is a display (49);
the controller includes a P L C system (55).
10. The apparatus (100) for detecting defects in copper plating on holes drilled on printed circuit boards according to claim 9, further comprising a control panel disposed on an outer surface of the apparatus; the control panel is provided with input keys and/or a touch screen (54), and the control panel is in communication connection with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921644896.1U CN211206280U (en) | 2019-09-29 | 2019-09-29 | Drilling copper plating defect detector for printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921644896.1U CN211206280U (en) | 2019-09-29 | 2019-09-29 | Drilling copper plating defect detector for printed circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211206280U true CN211206280U (en) | 2020-08-07 |
Family
ID=71854722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921644896.1U Active CN211206280U (en) | 2019-09-29 | 2019-09-29 | Drilling copper plating defect detector for printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211206280U (en) |
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2019
- 2019-09-29 CN CN201921644896.1U patent/CN211206280U/en active Active
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