CN112996249A - Circuit board exposure reference positioning method and device - Google Patents
Circuit board exposure reference positioning method and device Download PDFInfo
- Publication number
- CN112996249A CN112996249A CN202110153476.9A CN202110153476A CN112996249A CN 112996249 A CN112996249 A CN 112996249A CN 202110153476 A CN202110153476 A CN 202110153476A CN 112996249 A CN112996249 A CN 112996249A
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- CN
- China
- Prior art keywords
- circuit board
- positioning
- exposure
- analysis device
- mark point
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Classifications
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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
-
- 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
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/16—Inspection; Monitoring; Aligning
- H05K2203/166—Alignment or registration; Control of registration
-
- 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
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/16—Inspection; Monitoring; Aligning
- H05K2203/167—Using mechanical means for positioning, alignment or registration, e.g. using rod-in-hole alignment
Abstract
The invention discloses a circuit board exposure reference positioning method and device, which relate to the field of circuit board processing and comprise a box body, a positioning device, an exposure device, a visual system and an analysis device, wherein the positioning device comprises a movable positioning clamp. The analysis device body intelligently controls the mobile positioning clamp to position the circuit board and can control the mobile circuit board according to the required coordinate change; the accuracy is improved and the operation time is reduced by using the Hough transformation with good performance as a positioning detection algorithm of the round Mark point.
Description
Technical Field
The invention relates to the technical field of circuit board processing exposure, in particular to a circuit board exposure reference positioning method and device.
Background
The circuit boards are classified into three categories, namely single-sided boards, double-sided boards and multilayer circuit boards according to the number of layers, and classified into flexible printed circuit boards (FPCs), hard Printed Circuit Boards (PCBs) and Flexible Printed Circuit Boards (FPCBs) according to characteristics, and the domestic research on the automatic detection system of the printed circuit boards starts at the early and middle 90 s and is just started. The research institutes for this research are also relatively few, and the research on the automatic optical inspection system for defects of the printed circuit board is still relatively early due to the influence of various factors.
The existing circuit board exposure reference positioning device is not intelligent enough, cannot position on the same point position, and cannot move a circuit board according to required coordinate change.
Disclosure of Invention
The invention aims to provide a circuit board exposure reference positioning method and device, which solve the problems that the existing circuit board exposure reference positioning device is not intelligent enough, cannot position on the same point position, and cannot move a circuit board according to the required coordinate change, and the existing circuit board exposure reference positioning method adopts the traditional Mark point identification, so that the operation time is relatively long and the precision is relatively high.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a circuit board exposure reference positioning device which comprises a box body, a positioning device, an exposure device, a visual system and an analysis device, wherein the box body comprises a box body, the positioning device comprises fixed slide rails and movable slide rails, the fixed slide rails are respectively welded on the surfaces of two sides in the box body, two ends of the movable slide rails are respectively in sliding fit with the fixed slide rails, the upper surface and the lower surface in the box body are respectively provided with an installation groove, the exposure devices are installed in the installation grooves, the visual system is installed on one surface of the exposure device, and the positioning device, the exposure device and the visual system are respectively and electrically connected with the analysis device.
Preferably, the box body further comprises box doors, the box doors are respectively hinged with one surface of the box body, and the box doors are provided with handles.
Preferably, the positioning device further comprises a mobile positioning fixture, the mobile positioning fixture is provided with a sliding block, the sliding block is in sliding fit with the mobile sliding rail, and the mobile positioning fixture is further provided with a right-angle fixing clamp.
Preferably, the analysis device includes an analysis device body and a display, the analysis device body is disposed on an upper surface of the box body, and the display is mounted on a surface of the analysis device body.
Preferably, S1: fixing the circuit board to the central area of the box body through the movable positioning clamp;
s2: acquiring a circuit board image through the vision system, and inputting circuit board image data into the analysis device body;
s3: the analysis device body carries out Mark point identification analysis and then carries out Mark point positioning;
s4: the analysis device body controls the positioning device to position the circuit board;
s5: and a plurality of exposure devices are used for exposure.
Preferably, in step S1, the movable positioning fixture fixes the circuit board diagonally by a right-angle fixing clamp.
Preferably, in step S2, the positions of the plurality of vision systems are adapted, the plurality of vision systems respectively acquire images of the front and back sides of the circuit board, the vision systems read image coordinates, then input the image coordinates into the analysis device body to recognize the shape of the Mark point, calculate the coordinate position for the shape of the Mark point, and convert the coordinate position into a machine to calculate the deflection of the circuit board.
Preferably, in step S3, the analysis device body uses a good Hough transform as a positioning detection algorithm for the circular Mark points.
Preferably, in step S4, the analysis device body controls the positioning device to position the circuit board according to the coordinates calculated in step S3.
Preferably, in step S5, the plurality of exposure devices perform cursor printing on the front and back sides of the circuit board simultaneously and corresponding to the same position.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the circuit board is positioned by intelligently controlling the movable positioning clamp through the analysis device body, so that the defects that the conventional circuit board exposure reference positioning device is not intelligent enough, cannot position on the same point position, and cannot move the circuit board according to the required coordinate change are overcome, and compared with the conventional circuit board exposure reference positioning method by using a Hough transformation with good performance as a positioning detection algorithm of a circular Mark point, the conventional Mark point identification is adopted, so that the precision is improved, and the operation time is reduced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a circuit board exposure reference positioning device according to the present invention;
FIG. 2 is a schematic diagram of a side view of a circuit board exposure datum positioning device according to the present invention;
FIG. 3 is a schematic flow chart of an exposure reference positioning method for a circuit board according to the present invention
Fig. 4 is a distribution diagram of Mark points on a circuit board in the invention.
In the figure: 100. a box body; 101. a box door; 200. a positioning device; 201. fixing the slide rail; 202. moving the slide rail; 203. moving the positioning clamp; 300. an exposure device; 400. a vision system; 500. an analysis device; 501. a display; A. positioning holes; B. mark points of the circuit board; C. a pin; D. and (5) marking the device.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The first embodiment is as follows:
referring to fig. 1-2, the present invention is a circuit board exposure reference positioning device, including a box 100, a positioning device 200, an exposure device 300, a vision system 400, and an analysis device 500, wherein the box 100 includes a box body, the positioning device 200 includes a fixed slide rail 201 and a movable slide rail 202, the fixed slide rails 201 are respectively welded on two side surfaces inside the box body, two ends of the movable slide rails 202 are respectively in sliding fit with the fixed slide rails 201, the upper and lower surfaces inside the box body are respectively provided with an installation groove, the exposure devices 300 are installed in the installation grooves, the vision system 400 is installed on one surface of the exposure device 300, in order to achieve the intelligentization, a circuit system is provided between the positioning device 200, the exposure device 300, and the vision system 400 and the analysis device 500, and specifically, the positioning device 200, the exposure device 300, and the vision system 400 are electrically connected to the analysis device 500.
Further, when exposing, the inside other illumination influences that can not have of box body, in order to avoid receiving other illumination influences, specifically, box 100 still includes chamber door 101, and a plurality of chamber doors 101 are respectively with a box body surface hinge, and chamber door 101 is equipped with the handle.
Further, in order to fix the circuit board without affecting exposure, the circuit board is fixed in a side clamping mode, the positioning device 200 further comprises a plurality of movable positioning clamps 203, each of the plurality of movable positioning clamps 203 is provided with a sliding block, the sliding blocks are in sliding fit with the corresponding movable sliding rail 202, a single movable positioning clamp 203 is in sliding fit with one of the corresponding movable sliding rails 202, the circuit board is clamped in a matching mode through the two movable positioning clamps 203 in the sliding fit of the two movable sliding rails 202, the movable positioning clamps 203 are further provided with right-angle fixing clamps, and the right-angle fixing clamps are more effective in fixing the circuit board.
Further, the analysis device 500 includes an analysis device body and a display 501, the analysis device body is disposed on the upper surface of the box body, the display 501 is mounted on a surface of the analysis device body, and the display 501 displays the positioning data rapidly.
Example two:
referring to fig. 3, the present invention is a method and apparatus for positioning circuit board exposure references, S1: fixing the circuit board to the central area of the box body by moving the positioning clamp 203;
s2: acquiring a circuit board image through the vision system 400, and inputting circuit board image data into the analysis device body;
s3: the analysis device body carries out Mark point identification analysis and then carries out Mark point positioning;
s4: the analysis device body controls the positioning device 200 to position the circuit board;
s5: the plurality of exposure devices 300 perform exposure.
Further, in step S1, the movable positioning jig 203 fixes the circuit board diagonally by the right-angle fixing jig.
Further, in step S2, the positions of the plurality of vision systems 400 are adapted, the plurality of vision systems 400 respectively obtain front and back images of the circuit board, the vision systems 400 read the image coordinates, then input the image coordinates into the analysis device body to identify the shape of the Mark point, calculate the coordinate position for the shape of the Mark point, and convert the coordinate position into a machine to calculate the deflection of the circuit board.
Further, in step S3, the analysis device body uses the Hough transform with good performance as the positioning detection algorithm of the circular Mark point.
Further, in step S4, the analysis device body control positioning device 200 performs positioning of the wiring board based on the coordinates calculated in step S3.
Further, in step S5, the plurality of exposure devices 300 perform cursor printing on the front and back sides of the circuit board simultaneously and corresponding to the same position.
Example three:
referring to fig. 4, in order to achieve the exposure reference positioning method for the circuit board of the present invention, the Mark point pattern of the present invention is a solid circle with a diameter of 1nm, the minimum Mark point is 0.5mm, the maximum Mark point is 3mm, the size change of the same circuit board is not more than 25 μm, a space region is arranged around the Mark point, the diameter of the space region is equal to the diameter of the Mark point, the Mark point is at least 5.0mm off the circuit board under the condition of satisfying the diameter of the space region, and in order to achieve the best performance, the contrast between the Mark point and the substrate material of the circuit board must be very high.
Example four:
aiming at the circuit board exposure reference positioning method, in order to further explain the accuracy of the Hough transformation algorithm in the aspect of Mark point positioning, a plurality of circuit boards with circular Mark points are selected, a rapid algorithm and the Hough transformation algorithm are respectively used for detecting the global Mark points (three Mark points form a group), and the performances of the two algorithms are compared by calculating the offset and the deflection angle of the circuit board in the horizontal direction and the vertical direction.
| Parameter(s) | Reference quantity | Fast algorithm | The invention |
| Horizontal offset Δ x (μm) | 1156 | 1163 | 1155.1 |
| Vertical offset Δ y (μm) | 1578 | 1581 | 1578.6 |
| Rotation angle delta theta (0.01 degree) | 2.15 | 2.18 | 2.16 |
The experiment proves that the calculated offset and deflection angle accuracy of the calculation circuit board in the horizontal and vertical directions are higher.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a circuit board exposure benchmark positioner, includes box (100), positioner (200), exposure device (300), vision system (400), analytical equipment (500), its characterized in that: the box (100) comprises a box body, the positioning device (200) comprises a fixed slide rail (201) and a movable slide rail (202), the fixed slide rail (201) is welded on the surfaces of the two sides in the box body respectively, the two ends of the movable slide rail (202) are in sliding fit with the fixed slide rails (201), the upper surface and the lower surface in the box body are provided with mounting grooves respectively, the exposure device (300) is mounted in the mounting grooves, the visual system (400) is mounted on one surface of the exposure device (300), and the positioning device (200), the exposure device (300) and the visual system (400) are electrically connected with the analysis device (500) respectively.
2. A circuit board exposure reference positioning device according to claim 1, wherein: the box body (100) further comprises box doors (101), the box doors (101) are hinged to one surface of the box body respectively, and the box doors (101) are provided with handles.
3. A circuit board exposure reference positioning device according to claim 1, wherein: the positioning device (200) further comprises a mobile positioning clamp (203), a plurality of sliding blocks are arranged on the mobile positioning clamp (203), the sliding blocks are in sliding fit with the mobile sliding rails (202), and the mobile positioning clamp (203) is further provided with a right-angle fixing clamp.
4. A circuit board exposure reference positioning device according to claim 1, wherein: the analysis device (500) comprises an analysis device body and a display (501), wherein the analysis device body is arranged on the upper surface of the box body, and the display (501) is arranged on one surface of the analysis device body.
5. A circuit board exposure reference positioning method according to any one of claims 1 to 4, characterized in that:
s1: fixing the circuit board to the central area of the box body by the mobile positioning clamp (203);
s2: obtaining a circuit board image through the vision system (400), and inputting circuit board image data into the analysis device body;
s3: the analysis device body carries out Mark point identification analysis and then carries out Mark point positioning;
s4: the analysis device body controls the positioning device (200) to position the circuit board;
s5: a plurality of the exposure devices (300) perform exposure.
6. The circuit board exposure reference positioning method according to claim 5, characterized in that: in step S1, the movable positioning clamp (203) fixes the circuit board diagonally through a right-angle fixing clamp.
7. The circuit board exposure reference positioning method according to claim 5, characterized in that: in the step S2, the positions of the plurality of vision systems (400) are adapted, the plurality of vision systems (400) respectively acquire images of the front and back sides of the circuit board, the vision systems (400) read image coordinates, then input the image coordinates into the analysis device body to identify the shape of the Mark point, calculate the coordinate position of the Mark point according to the shape of the Mark point, and convert the coordinate position into a machine to calculate the deflection of the circuit board.
8. The circuit board exposure reference positioning method according to claim 5, characterized in that: in step S3, the analysis device body uses Hough transform with good performance as a positioning detection algorithm for the circular Mark point.
9. The circuit board exposure reference positioning method according to claim 5, characterized in that: in step S4, the analysis device body controls the positioning device (200) to position the circuit board based on the coordinates calculated in step S3.
10. The circuit board exposure reference positioning method according to claim 5, characterized in that: in the step S5, the plurality of exposure devices (300) perform cursor printing on the front and back sides of the circuit board simultaneously and corresponding to the same position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110153476.9A CN112996249A (en) | 2021-02-04 | 2021-02-04 | Circuit board exposure reference positioning method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110153476.9A CN112996249A (en) | 2021-02-04 | 2021-02-04 | Circuit board exposure reference positioning method and device |
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| Publication Number | Publication Date |
|---|---|
| CN112996249A true CN112996249A (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110153476.9A Pending CN112996249A (en) | 2021-02-04 | 2021-02-04 | Circuit board exposure reference positioning method and device |
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| CN (1) | CN112996249A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113741386A (en) * | 2021-07-29 | 2021-12-03 | 东风电驱动系统有限公司 | Automatic program writing and function detection device and method for circuit board of vehicle control unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100914446B1 (en) * | 2008-12-24 | 2009-08-28 | 주식회사 이큐스팜 | Auto-alignment mechanism for multi-layer substrate and machine for induction bonding multi-layer substrate temporarily |
| CN108710266A (en) * | 2018-05-18 | 2018-10-26 | 无锡影速半导体科技有限公司 | A kind of the write-through exposure system and method for trigger-type aligning structure |
| CN109583504A (en) * | 2018-12-05 | 2019-04-05 | 河北工业大学 | A kind of pcb board circular locating openings quick and precisely recognition methods of view-based access control model |
| CN211236562U (en) * | 2020-01-20 | 2020-08-11 | 龙岩海圣科技有限公司 | Exposure machine convenient to adjust |
| CN112198764A (en) * | 2020-10-10 | 2021-01-08 | 肖文娟 | Automatic aligning device of printed circuit board exposure machine |
-
2021
- 2021-02-04 CN CN202110153476.9A patent/CN112996249A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100914446B1 (en) * | 2008-12-24 | 2009-08-28 | 주식회사 이큐스팜 | Auto-alignment mechanism for multi-layer substrate and machine for induction bonding multi-layer substrate temporarily |
| CN108710266A (en) * | 2018-05-18 | 2018-10-26 | 无锡影速半导体科技有限公司 | A kind of the write-through exposure system and method for trigger-type aligning structure |
| CN109583504A (en) * | 2018-12-05 | 2019-04-05 | 河北工业大学 | A kind of pcb board circular locating openings quick and precisely recognition methods of view-based access control model |
| CN211236562U (en) * | 2020-01-20 | 2020-08-11 | 龙岩海圣科技有限公司 | Exposure machine convenient to adjust |
| CN112198764A (en) * | 2020-10-10 | 2021-01-08 | 肖文娟 | Automatic aligning device of printed circuit board exposure machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113741386A (en) * | 2021-07-29 | 2021-12-03 | 东风电驱动系统有限公司 | Automatic program writing and function detection device and method for circuit board of vehicle control unit |
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Application publication date: 20210618 |