CN111343788A - Control system and method for PCB (printed circuit board) splitting - Google Patents
Control system and method for PCB (printed circuit board) splitting Download PDFInfo
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- CN111343788A CN111343788A CN202010149412.7A CN202010149412A CN111343788A CN 111343788 A CN111343788 A CN 111343788A CN 202010149412 A CN202010149412 A CN 202010149412A CN 111343788 A CN111343788 A CN 111343788A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching
- H05K3/0052—Depaneling, i.e. dividing a panel into circuit boards; Working of the edges of circuit boards
Abstract
The invention discloses a control system and a control method for PCB board separation, which are used for separating material boards and comprise the following steps: a100, obtaining template coordinate system information of a material plate to be cut and initial cutting line information corresponding to the template coordinate system information; a200, detecting and judging whether a material plate exists in the object channel; if yes, starting the camera; a300, capturing a real-time picture in the material channel by a camera, recording Mark points of the material plate and comparing the Mark points with template coordinate system information in A100; a400, performing feedback compensation according to the comparison result of A300 to obtain cutting coordinate system information and cutting line information corresponding to the cutting coordinate system information, adjusting the position of the milling cutter to be overlapped with the cutting line information, and completing board splitting cutting to form a PCB; the technical scheme provided by the invention solves the technical problems of low board splitting precision and low efficiency in the existing PCB splitting.
Description
Technical Field
The invention relates to the technical field of PCB board separation control methods, in particular to a PCB board separation control system and a PCB board separation control method.
Background
To increase the throughput of Printed Circuit Board (PCB) manufacturing and the speed of the card production line, PCBs are typically designed in multiple versions that will be separated into many smaller individual PCB platelets in the final product.
In the process of separating the PCB, the conventional method uses manual folding, although the timeliness is high, the damage to a PCB electrical circuit, parts and a tin channel is often caused by uneven force of manual folding and the difference of the angle position of the folding plate; and the conventional board separator has the defects of large positioning error, poor PCB separation effect, high PCB rejection rate, few compatible PCB types, incapability of sorting NG modules on the PCB and the like.
Disclosure of Invention
The invention aims to provide a control system and a control method for PCB board separation, and the technical scheme provided by the invention solves the technical problems of low board separation precision and low efficiency in the existing PCB board separation.
In order to solve the technical problems, the invention provides a control system for PCB splitting, which is used for splitting a material plate, wherein the material plate comprises a material frame and a plurality of PCB plates which are uniformly arranged and connected, and the PCB plates are connected with the material frame through a water gap material; the PCB cutting machine comprises a material channel, a cutting station, a milling cutter and a cutting device, wherein the material channel conveys a material plate to the cutting station, and the milling cutter is started and cuts the water gap material, so that the material plate is divided into a plurality of PCB plates;
and the camera is used for capturing the real-time picture of the material plate or the PCB.
Preferably, Mark points are formed on the material plate.
A PCB board splitting control method based on the control system comprises the following steps:
a100, obtaining template coordinate system information of a material plate to be cut and initial cutting line information corresponding to the template coordinate system information;
a200, detecting and judging whether a material plate exists in a material channel; if yes, starting the camera;
step A300, capturing a real-time picture in the material channel by a camera, recording Mark points of the material plate and comparing the Mark points with the template coordinate system information in the step A100;
step A400, performing feedback compensation according to the comparison result of the step A300 to obtain cutting coordinate system information and cutting line information corresponding to the cutting coordinate system information, adjusting the position of the milling cutter to be overlapped with the cutting line information, and completing board splitting and cutting to form a PCB;
and A500, acquiring material information of the PCB after board separation, and sorting the PCB according to the material information.
Preferably, in step a100, the template coordinate system information includes a plurality of Mark points corresponding to Mark points on the material plate to be cut.
Preferably, the initial cutting line information includes an initial cutting position and a cutting direction.
Preferably, in step a100, the step of obtaining the initial cutting information includes:
a101, placing a material plate to be cut in a material channel along a correct cutting direction;
a102, after the material plate is conveyed to a cutting station by a material channel, a camera captures Mark points of the material plate, and a template coordinate system is established by the Mark points;
and A103, manually adjusting the position and the cutting direction of the milling cutter, and recording the initial cutting position and the cutting direction according to the template coordinate system.
Preferably, the step of comparing the template coordinate system in the step a300 is as follows:
a301, recording a connecting line between Mark points on a material plate;
and A302, recording the slope of the Mark point connecting line on the material plate by taking the connecting line between the Mark points on the template coordinate system information as a standard to obtain slope information.
Preferably, the step of feedback compensation in step a400 is:
a401, obtaining the slope information of the Mark point connecting line in the step A302;
a402, obtaining a template coordinate system, and deflecting the template coordinate system according to the slope information to obtain a cutting coordinate system;
and A403, substituting the initial cutting line information into the cutting coordinate system to obtain cutting line information corresponding to the cutting coordinate system.
Preferably, in step a500, the material information includes an NG or OK identifier of the PCB and coordinate data.
Preferably, the NG or OK identifier and the coordinate data in the material information are input and acquired through a processing device at the front end of the material channel, or detected and acquired through a sorting device at the rear end of the material channel.
Compared with the prior art, the invention has the beneficial effects that: the control method provided by the invention has the advantages of high automation degree, high production efficiency and high production precision, and specifically comprises the following steps:
(1) compared with the traditional manual board splitting mode, the technical scheme provided by the invention has higher automation degree, reduces the use of human resources and reduces the labor cost; in addition, the manual operation process often cannot reach the accurate unified standard, and by adopting the technical scheme provided by the invention, the product loss caused by manual operation in the plate folding process is avoided;
(2) although a part of the existing PCB splitting plates are split by adopting an automatic plate splitting machine, a certain error exists in people, and the PCB splitting operation cannot be accurately carried out on the PCB; the invention adopts a control method of visual feedback adjustment, scans the field pictures of the board separation in real time through the camera, and adjusts the position of the cutting tool in time to achieve the effect of accurate board separation;
(3) according to the invention, after the PCB is cut and divided, the camera scans the real-time picture, and then the cut PCB is sorted, so that NG materials and OK materials are quickly classified, the automation degree is high, and the production efficiency is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic flow diagram of the process of the present invention;
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The existing PCB splitting method adopts two modes, namely manual plate folding or plate splitting by adopting a plate splitting machine; the automation degree of manual plate folding is low, and the PCB is damaged due to manual operation errors; although the board splitting degree of the board splitting machine is high, the board splitting machine still has certain errors and low precision, so that the product rejection rate is high.
In order to solve the above technical problem, the present embodiment provides the following technical solutions:
the embodiment provides a control system for PCB splitting, which comprises a material channel and a camera.
Specifically, the material processed in this embodiment is a material plate, wherein the material plate includes a material frame and a plurality of PCBs that are uniformly arranged and connected, and the PCBs are connected to each other and to the material frame through a nozzle material.
Specifically, the material channel is used for conveying the material plates to the cutting station, and the milling cutter is started to cut the water gap material, so that the PCB in the material plates is divided into a plurality of PCB plates.
Specifically, the camera is used for capturing real-time pictures of the material plate or the PCB.
Further, Mark points are formed on the material plate;
furthermore, the Mark points can be formed at the four corners of the material plate, and can also be formed on each PCB.
The present embodiment mainly describes main devices in the PCB board, and a specific control method will be specifically described from the following embodiments.
Example 2
This embodiment will specifically describe how to perform accurate board division by the PCB division control system provided in embodiment 1.
Specifically, the present embodiment provides a method for controlling PCB panel separation, including the following steps:
a100, obtaining template coordinate system information of a material plate to be cut and initial cutting line information corresponding to the template coordinate system information;
a200, detecting and judging whether a material plate exists in a material channel; if yes, starting the camera;
step A300, capturing a real-time picture in the material channel by a camera, recording Mark points of the material plate and comparing the Mark points with the template coordinate system information in the step A100;
step A400, performing feedback compensation according to the comparison result of the step A300 to obtain cutting coordinate system information and cutting line information corresponding to the cutting coordinate system information, adjusting the position of the milling cutter to be overlapped with the cutting line information, and completing board splitting and cutting to form a PCB;
and A500, acquiring material information of the PCB after board separation, and sorting the PCB according to the material information.
Specifically, the information obtained in step a100 includes template coordinate system information of the material plate to be cut and initial cutting line information corresponding to the template coordinate system information;
the initial cutting line information specifically comprises an initial cutting position and a cutting direction;
furthermore, the milling cutter can be a lower cutter point and a straight line point of the milling cutter;
specifically, the specific position information when the lower cutting point position milling cutter moves to one side of the nozzle material can be coordinate information, and enters a to-be-cut state; the milling cutter advances from the lower cutter point to the straight line point under the guidance of the coordinate information of the lower cutter point and the straight line point, namely the cutting of the nozzle material is finished, and the initial cutting position and the cutting direction of the milling cutter are determined in a two-point line forming mode.
Specifically, in step a100, the template coordinate system information includes a plurality of Mark points corresponding to Mark points on the material plate to be cut.
Example 3
The present embodiment will describe a specific manner of acquiring the template coordinate system information and the initial cutting line information in step a 100.
Specifically, the template coordinate system information and the initial cutting line information may be obtained manually or directly from a database.
Further, the specific steps of manual adjustment acquisition are as follows:
a101, placing a material plate to be cut in a material channel along a correct cutting direction;
a102, after the material plate is conveyed to a cutting station by a material channel, a camera captures Mark points of the material plate, and a template coordinate system is established by the Mark points;
and A103, manually adjusting the position and the cutting direction of the milling cutter, and recording the initial cutting position and the cutting direction according to the template coordinate system.
In the actual production process, the PCB board that the producer produced often has multiple model, then need adjust the production line parameter when the PCB board that faces different models cuts to the PCB board of adaptation different model sizes, in order to further improve production efficiency, the time that needs the regulation when reducing the PCB board of changing different models, this embodiment provides following technical scheme.
Specifically, after each manual adjustment, the recorded template coordinate system and the initial cutting line of the corresponding model can be transmitted to a unified database, and when the PCB of the same model is subsequently replaced, the template coordinate system information and the initial cutting line information in the database can be called for use.
Example 4
This embodiment specifically describes a specific comparison process with the template coordinate system in step a300 and a specific process of performing feedback compensation according to the comparison result of step a300 in step a 400.
Specifically, the step of comparing the template coordinate system in step a300 includes:
a301, recording a connecting line between Mark points on a material plate;
and A302, recording the slope of the Mark point connecting line on the material plate by taking the connecting line between the Mark points on the template coordinate system information as a standard to obtain slope information.
Specifically, the feedback compensation in step a400 includes:
a401, obtaining the slope information of the Mark point connecting line in the step A302;
a402, obtaining a template coordinate system, and deflecting the template coordinate system according to the slope information to obtain a cutting coordinate system;
and A403, substituting the initial cutting line information into the cutting coordinate system to obtain cutting line information corresponding to the cutting coordinate system.
Specifically, the material plates are all arranged in a rectangular shape, and the PCB plates connected with the material plates through the water gap are also uniformly arranged, so that the cutting line information of the rest PCB plates can be obtained only by inputting the length and width information of the material plates and the PCB plates and converting the coordinate information of the known cut PCB plates into the coordinate information of the rest PCB plates,
example 5
In the production process of the PCB, because of the production process or operation errors and other reasons, some unqualified products, generally called NG materials, can appear on the PCB existing on the same material plate, in order to further improve the overall working efficiency, the invention applies the visual control method to the sorting procedure after the PCB is separated, and the method specifically comprises the following steps:
specifically, in step a500, the material information includes NG or OK identifiers and coordinate data of the PCB;
further, the NG or OK identification in the material information is obtained through a material channel front end processing device or a material channel rear end sorting device.
Specifically, the specific manner of obtaining through the material channel front end processing equipment may be:
the front end processing equipment of the material channel is a feeding machine or other material plate processing equipment;
furthermore, before the material plate enters the material channel to be subjected to plate dividing and cutting, the information of the NG materials or the OK materials can be detected in advance by the front-end equipment, the information is transmitted to the sorting equipment, and the NG materials and the OK materials are sorted by the sorting equipment.
Furthermore, the material plate can be manually detected, and NG or OK material information is input and transmitted to the sorting equipment.
NG or OK sign and coordinate data in the material information still can obtain through the letter sorting equipment of material passageway rear end, specifically as follows:
the surfaces of the OK material and the NG material can be distinguished by covering distinguishing marks, such as a shielding cover and the like; the specific detection steps are as follows:
a501, a camera collects an image of the surface of a PCB;
and A502, carrying out graying processing on the surface image of the PCB acquired in A501, judging whether the material is NG or OK according to the area of black and white pixels, and sorting.
Specifically, in the actual production, the OK material needs to be further protected and packaged, so an end cover is covered on the surface, and the black and white pixel area of the OK material is intentionally fixed with a threshold value because the same end cover is generally adopted, so that the OK material can be used as a distinguishing point between the OK material and the NG material. When the black-white pixel area of the PCB picture information collected by the camera is in a specified threshold value, the material can be judged as OK material; and vice versa.
Furthermore, the camera captures Mark points or other identification points on the material plate so as to establish a coordinate system, specific coordinate data of each PCB is obtained according to the length and width information of the material plate and the PCB, and the sorting equipment sorts one by one according to the coordinate data by combining the recognized NG or OK identification.
Example 6
In the actual production process, the conveying speed of material is often greater than the speed that it cut the board, consequently, for the production efficiency in the further improvement actual production process, this embodiment provides following technical scheme:
specifically, the number of the material channels is at least two; utilize many material passageway simultaneous operation and many material passageway information interchange feedback to improve production efficiency, concrete theory of operation is:
when the front-end machine of the material channel is ready to be fed to the material channel, judging whether the material is cut or not inside the material channel, if so, not feeding, otherwise, feeding; therefore, a plurality of material channels can run simultaneously, and the transmission rate of matched materials is maximized.
Present milling cutter often only adopts a knife face to cut when cutting material board, and after using the certain degree, milling cutter's sharpness reduces, influences the cutting effect, then need change milling cutter this moment for milling cutter's overall utilization is not high, and in order to solve this technical problem, this embodiment provides following technical scheme:
specifically, the milling cutter can automatically replace the cutter face; the accessible sets up and carries out the automatic knife face of changing after the certain number of times of milling cutter cutting knife, and more abundant effectual utilization milling cutter has simultaneously guaranteed the quality of product cutting.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a control system of PCB branch board for cut apart the material board, its characterized in that: the material plate comprises a material frame and a plurality of PCB plates which are uniformly arranged and connected, and the PCB plates are connected with the material frame through a water gap material; comprises that
The material channel conveys the material plate to a cutting station, and starts the milling cutter and cuts the water gap material to divide the material plate into a plurality of PCB plates;
and the camera is used for capturing the real-time picture of the material plate or the PCB.
2. The PCB panel separation control method according to claim 1, wherein: mark points are formed on the material plate.
3. A board splitting control method based on the PCB board splitting control system of any one of claims 1-2, characterized in that: the method comprises the following steps:
a100, obtaining template coordinate system information of a material plate to be cut and initial cutting line information corresponding to the template coordinate system information;
a200, detecting and judging whether a material plate exists in a material channel; if yes, starting the camera;
step A300, capturing a real-time picture in the material channel by a camera, recording Mark points of the material plate and comparing the Mark points with the template coordinate system information in the step A100;
step A400, performing feedback compensation according to the comparison result of the step A300 to obtain cutting coordinate system information and cutting line information corresponding to the cutting coordinate system information, adjusting the position of the milling cutter to be overlapped with the cutting line information, and completing board splitting and cutting to form a PCB;
and A500, acquiring material information of the PCB after board separation, and sorting the PCB according to the material information.
4. The board separation control method according to claim 3, characterized in that: in step a100, the template coordinate system information includes a plurality of Mark points corresponding to Mark points on the material plate to be cut.
5. The PCB board splitting control method of claim 3, wherein: the initial cutting line information includes an initial cutting position and a cutting direction.
6. The PCB board splitting control method of claim 5, wherein: in step a100, the step of obtaining the initial cutting information includes:
a101, placing a material plate to be cut in a material channel along a correct cutting direction;
a102, after the material plate is conveyed to a cutting station by a material channel, a camera captures Mark points of the material plate, and a template coordinate system is established by the Mark points;
and A103, manually adjusting the position and the cutting direction of the milling cutter, and recording the initial cutting position and the cutting direction according to the template coordinate system.
7. The PCB board splitting control method of claim 3, wherein: the step a300 of comparing the template coordinate system with the template coordinate system includes:
a301, recording a connecting line between Mark points on a material plate;
and A302, recording the slope of the Mark point connecting line on the material plate by taking the connecting line between the Mark points on the template coordinate system information as a standard to obtain slope information.
8. The board separation control method according to claim 3, characterized in that: the step of feedback compensation in step A400 is
A401, obtaining the slope information of the Mark point connecting line in the step A302;
a402, obtaining a template coordinate system, and deflecting the template coordinate system according to the slope information to obtain a cutting coordinate system;
and A403, substituting the initial cutting line information into the cutting coordinate system to obtain cutting line information corresponding to the cutting coordinate system.
9. The PCB board splitting control method of claim 3, wherein: in step a500, the material information includes NG or OK identifiers of the PCB and coordinate data.
10. The PCB panel separation control method of claim 9, wherein: and NG or OK identification and coordinate data in the material information are input and acquired through processing equipment at the front end of the material channel, or detected and acquired through sorting equipment at the rear end of the material channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010149412.7A CN111343788A (en) | 2020-03-04 | 2020-03-04 | Control system and method for PCB (printed circuit board) splitting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010149412.7A CN111343788A (en) | 2020-03-04 | 2020-03-04 | Control system and method for PCB (printed circuit board) splitting |
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| CN111343788A true CN111343788A (en) | 2020-06-26 |
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| CN202010149412.7A Pending CN111343788A (en) | 2020-03-04 | 2020-03-04 | Control system and method for PCB (printed circuit board) splitting |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018950A (en) * | 2021-09-29 | 2022-02-08 | 浪潮(山东)计算机科技有限公司 | Circuit board divides board detecting system |
| CN114245576A (en) * | 2021-11-17 | 2022-03-25 | 南京晟通信息技术有限公司 | Mark point pair-based track correction method for PCB splitting program |
| CN114727502A (en) * | 2022-05-24 | 2022-07-08 | 浙江树人学院 | Computer-aided PCB automatic alignment cutting method and system |
| CN117479440A (en) * | 2023-12-28 | 2024-01-30 | 珠海市申科谱工业科技有限公司 | Board separator control method and device, board separator and circuit board production line |
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| CN110696073A (en) * | 2019-09-29 | 2020-01-17 | 武汉大学 | Novel cutting device and method for PCB |
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| CN108260286A (en) * | 2018-03-12 | 2018-07-06 | 三和盛电子科技（东莞）有限公司 | A kind of online segmenting device of pcb board |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018950A (en) * | 2021-09-29 | 2022-02-08 | 浪潮(山东)计算机科技有限公司 | Circuit board divides board detecting system |
| CN114245576A (en) * | 2021-11-17 | 2022-03-25 | 南京晟通信息技术有限公司 | Mark point pair-based track correction method for PCB splitting program |
| CN114727502A (en) * | 2022-05-24 | 2022-07-08 | 浙江树人学院 | Computer-aided PCB automatic alignment cutting method and system |
| CN114727502B (en) * | 2022-05-24 | 2022-09-02 | 浙江树人学院 | Computer-aided PCB automatic alignment cutting method and system |
| CN117479440A (en) * | 2023-12-28 | 2024-01-30 | 珠海市申科谱工业科技有限公司 | Board separator control method and device, board separator and circuit board production line |
| CN117479440B (en) * | 2023-12-28 | 2024-02-27 | 珠海市申科谱工业科技有限公司 | Board separator control method and device, board separator and circuit board production line |
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Application publication date: 20200626 |