CN212227984U - Three-dimensional measuring device - Google Patents
Three-dimensional measuring device Download PDFInfo
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- CN212227984U CN212227984U CN202021368190.XU CN202021368190U CN212227984U CN 212227984 U CN212227984 U CN 212227984U CN 202021368190 U CN202021368190 U CN 202021368190U CN 212227984 U CN212227984 U CN 212227984U
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Abstract
The utility model provides a three-dimensional measuring device, including one get for picture element, RGB lamp panel, slope set up in get for picture element side two at least projection and with the fixed frame of light source of projection one-to-one, the fixed frame of light source is fixed in on the RGB lamp panel, one the fixed frame of light source is used for fixed one projection, projection can pass the fixed frame projection of light source extremely in the RGB lamp panel. The utility model relates to a three-dimensional measuring device can effectively realize the high and effectual beneficial effect of formation of image precision.
Description
Technical Field
The utility model relates to a measuring equipment technical field particularly, relates to a three-dimensional measuring device.
Background
SPI (solder inspection) refers to a solder paste detection system, and is SMT detection equipment which calculates the height of solder paste printed on a circuit board (PCB) by a triangulation method by using an optical principle. When the circuit board is detected, the circuit board needs to be clamped and fixed by the clamping plate device.
When the circuit board is automatically shot, imaged and detected, the circuit board to be detected and a raised object to be detected on the circuit board need to be irradiated by a light source, and in a camera imaging (FOV) range, namely a detected area, the fewer shadow areas of projection imaging are, and the more accurate the detected data is.
In the detection of a circuit board with a Mirco LED chip, the height of a printed soldering paste is generally 30 +/-5 um, the size of a bonding pad is about 30 x 30um, the existing three-dimensional measuring device cannot accurately image the bonding pad with the small area, shadow areas in the imaging area are too many, and the final detection result is greatly influenced.
In view of this, the utility model provides a three-dimensional measuring device that the formation of image precision is high and the formation of image is effectual.
SUMMERY OF THE UTILITY MODEL
The utility model provides a three-dimensional measuring device that imaging precision is high and the formation of image is effectual.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a three-dimensional measuring device, including one get for instance piece, RGB lamp panel, slope set up in get for instance at least two projection pieces of side and with the fixed frame of light source of projection piece one-to-one, the fixed frame of light source is fixed in on the RGB lamp panel, one the fixed frame of light source is used for fixed one the projection piece, the projection piece can pass the fixed frame projection of light source extremely in the RGB lamp panel.
As a further improvement, the number of the projection pieces is two, and the included angle of the two projection pieces in the orthographic projection direction is 180 °.
As a further improvement, the number of the projection pieces is three, and the included angles of the three projection pieces in the orthographic projection direction are sequentially spaced by 90 degrees.
As a further improvement, an included angle between the projection piece in the orthographic projection direction and the arrangement direction of the objects to be tested on the pad to be tested is defined as alpha, wherein the range of the alpha is 10-110 degrees.
As a further refinement, said α is 14 °.
As further improvement, get for instance vertical set up in the axis position of RGB lamp panel, get for instance including the industry camera and the telecentric mirror head that the cooperation was used, the frame resolution scope that can realize the determinand of industry camera and telecentric mirror head cooperation is 1.5um ~2 um.
As a further improvement, the image capturing element comprises a 1200 ten thousand pixel industrial camera and a telecentric lens with a magnification of 3X, and an image source of the industrial camera is 5.5 um.
As further improvement, the RGB lamp panel includes lamp shade locking plate, lamp shade main part, camera lens locating part and overhead lamp plate, lamp shade main part detachably is fixed in lamp shade locking plate below is used for arranging blue LED lamp and green LED lamp, the lamp shade locking plate is seted up one and is stepped down the light trap that groove and at least one projection light that supplies the projection to send passed, the camera lens locating part passes the groove of stepping down extends to in the lamp shade main part, the camera lens locating part is the tubulose, camera lens locating part upper end with lamp shade locking plate is connected and the lower extreme is fixed with the overhead lamp plate, the overhead lamp plate is used for fixed red LED lamp, telecentric lens lower extreme extends to camera lens locating part bottom with overhead lamp plate looks butt, a camera lens formation of image hole has been seted up to the overhead lamp plate.
As a further improvement, the red LED lamp fixed below the overhead lamp panel comprises an inner layer and an outer layer, the inner layer LED lamp is used for illuminating the center reference point, and the outer layer LED lamp is used for illuminating red scattered light.
As a further improvement, the light source fixing frame is in a hollow right-angle trapezoid block shape, and the upper surface of the light source fixing frame is obliquely arranged and used for obliquely fixing the projection piece.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model relates to a three-dimensional measuring device wholly adopts the structure that sets up two at least projection pieces on the fixed frame of light source can effectively realize when measuring small-size printing soldering paste, guarantees through reasonable setting and the angle setting of a plurality of projection pieces that the shadow region is as few as possible in the measured area to the detection data that the assurance obtained is more accurate.
2. The utility model relates to an adopt projection among the three-dimensional measuring device on the orthographic projection direction and the pad that awaits measuring contained angle setting between the determinand array orientation can effectively avoid projection's projection grating and determinand array orientation to overlap, avoid leading to the not good problem that influences the testing result of projection effect.
3. The utility model relates to a three-dimensional measuring device wholly adopts the fixed frame of unique fixing device of projection spare i.e. light source, matches the special construction of telecentric mirror head, can effectively guarantee overall structure stability to can guarantee the data accuracy of SPI at the printing soldering paste about the high 30 +/-5 um size 30 x 30um of detection.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a three-dimensional measuring device according to the present invention;
fig. 2 is a schematic top view of a three-dimensional measuring device according to the present invention;
fig. 3 is a schematic structural diagram of the three-dimensional measuring device of the present invention.
Description of the main elements
10. An image capturing element;
11. an industrial camera;
12. a telecentric lens;
20. an RGB lamp panel;
21. a lampshade locking plate;
211. a light-transmitting hole;
22. a lampshade main body;
23. a lens limiting part;
24. an overhead lamp panel;
241. a lens imaging aperture;
30. a projection;
40. a light source fixing frame.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1, in an embodiment, a three-dimensional measuring device includes an image capturing element 10, an RGB lamp panel 20, at least two projecting elements 30 obliquely disposed on a side surface of the image capturing element 10, and light source fixing frames 40 corresponding to the projecting elements 30 one by one, wherein the light source fixing frames 40 are fixed on the RGB lamp panel 20, one light source fixing frame 40 is used for fixing one projecting element 30, and the projecting element 30 can project into the RGB lamp panel 20 through the light source fixing frame 40.
The whole structure that at least two projection members 30 are arranged on the light source fixing frame 40 can effectively realize that when small-sized printing soldering paste is measured, the shadow area in the measured area is ensured to be as few as possible through reasonable arrangement and angle arrangement of the plurality of projection members 30, so that the obtained detection data is ensured to be more accurate.
When the number of the projection members 30 is two, the included angle of the two projection members 30 in the orthographic projection direction is 180 degrees, most of the measured area can be illuminated by arranging the two projection members 30 under the normal condition, and the three-dimensional height of the measured object can be calculated.
Preferably, please refer to fig. 1 and 2, the number of the projection members 30 is three, three included angles of the projection members 30 in the orthogonal projection direction are sequentially spaced by 90 °, one side of the projection member 30 not provided for abdicating is reserved with enough space to fix the three-dimensional measuring device on the measuring machine, the middle projection member 30 is used for further ensuring the complete illumination of the measured object under the condition of some special pads, and a group of data is added to participate in the operation, so that the calculation result is more accurate, and the cost is increased due to the excessive projection members 30.
In addition, an included angle between the projection member 30 in the orthogonal projection direction and the arrangement direction of the objects to be tested on the pad to be tested is defined as alpha, wherein the range of alpha is 10-110 degrees, the normal pad is in a square plate shape, the arrangement direction of the objects to be tested on the pad is in the horizontal and vertical directions parallel to the side length of the pad, and a part of the arrangement direction of the objects to be tested is arranged along the cross diagonal line 45 degrees of the pad, so that the angle arrangement is adopted to avoid that the projection grating of the projection member 30 is overlapped with the arrangement direction of the objects to be tested, so that the projection effect is not good and the detection result is.
Preferably, α is 14 °, that is, in fig. 2, an angle between the Y axis of the industrial camera and the nearest projection member is 59 °, and by using such an angle, on one hand, a diagonal line crossing the bonding pads can be staggered, and on the other hand, enough space is reserved for fixing the three-dimensional measuring device on the measuring machine.
Referring to fig. 1, in an embodiment, the image capturing element 10 is vertically disposed at an axial line position of the RGB lamp panel 20, the image capturing element 10 includes an industrial camera 11 and a telecentric lens 12, and the industrial camera 11 and the telecentric lens 12 cooperate to realize a view frame resolution range of the object to be measured of 1.5um to 2 um.
Specifically, in the inspection of the circuit board with the Mirco LED chip, the height of the printed solder paste is generally 30 ± 5um, the size of the pad is about 30 × 30um, in order to accurately inspect the small printed solder paste, it is considered to use an industrial camera 11 with 1200 ten thousand pixels to match with a telecentric lens 12 with a magnification of 3X, the image source of the industrial camera 11 is 5.5um, that is, the viewfinder resolution is 5.5um/3=1.83um, then on the size of the pad of 30um, the pixels 30/1.83=16 corresponding to any vertical and horizontal direction, and the area of 30 × 30um is 256 pixels in total, which effectively meets the imaging requirement in the inspection, and meanwhile, the matching of the industrial camera 11 and the telecentric lens 12 can be correspondingly adjusted according to the sizes of the pads with other sizes, which is not only limited to the above specification.
Referring to fig. 1 and 3, the RGB lamp panel 20 includes a cover locking plate 21, a cover main body 22, a lens stopper 23, and an overhead lamp panel 24, the cover main body 22 is detachably fixed below the cover locking plate 21 and serves to arrange blue and green LED lamps, the lampshade locking plate 21 is provided with a relief groove and at least one light hole 211 for projection light emitted by the projection member 30 to pass through, the lens limiting piece 23 penetrates through the receding groove to extend into the lampshade main body 22, the lens limiting piece 23 is tubular, the upper end of the lens limit piece 23 is connected with the lampshade locking plate 21, the lower end is fixed with the overhead lamp plate 24, the top-mounted lamp plate 24 is used for fixing a red LED lamp, the lower end of the telecentric lens 12 extends to the bottom of the lens limiting part 23 and the top-mounted lamp plate 24 in a butting mode, and the top-mounted lamp plate 24 is provided with a lens imaging hole 241.
Further, the fixed red LED lamp in overhead lamp plate 24 below includes the inlayer and the ectonexine, and the inlayer LED lamp is used for lighting up central benchmark, and outer LED lamp is used for shining red scattered light.
The RGB lamp panel 20 adopts the structure that the lamp shade main body 22 combines the overhead lamp plate 24 to effectively realize the uniform irradiation of the red, blue, green three-color LED lamp source in the lamp panel, wherein the inner red LED lamp on the overhead lamp plate 24 is used for illuminating the center reference point, i.e. illuminating the mark point (the mark point is generally circular), and the outer red scattered light of RGB is adopted to avoid the direct light to produce the bright spot.
In addition, because the high-power patch LED lamp is adopted, the lamp panel is not made into a circular arc shape, so that the lamp panel in the lampshade main body 22 is in an octagonal shape approaching to a circle to ensure that the astigmatism is as uniform as possible. The specific structure of the lampshade main body 22 can refer to an octagonal lamp panel device in chinese patent CN2019205035537U, which is not described herein.
Referring to fig. 1, in an embodiment, the light source fixing frame 40 is a hollow right trapezoid block, the upper surface of the light source fixing frame 40 is obliquely arranged to obliquely fix the projection member 30, a lens of the projection member 30 extends into the light source fixing frame 40 through the upper surface of the light source fixing frame 40, and the periphery of the light source fixing frame 40 is also hollowed, so that the stability of the overall structure is ensured, and the material cost is saved to the maximum extent by observing whether the installation angle is accurate from the outside.
The whole special fixing device that adopts projection 30 is the fixed frame 40 of light source, matches the special construction of telecentric mirror 12, can effectively guarantee overall structure stability to can guarantee that SPI is detecting the data accuracy of high 30 +/-5 um big or small 30 x 30 um's printing solder paste.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A three-dimensional measuring device characterized by: including one get for picture element (10), RGB lamp panel (20), slope set up in get for picture element (10) side at least two projection (30) and with the fixed frame of light source (40) of projection (30) one-to-one, the fixed frame of light source (40) are fixed in on the RGB lamp panel (20), one the fixed frame of light source (40) are used for fixing one projection (30), projection (30) can pass the fixed frame of light source (40) projection extremely in the RGB lamp panel (20).
2. The three-dimensional measuring device according to claim 1, characterized in that: the number of the projection pieces (30) is two, and the included angle of the two projection pieces (30) in the orthographic projection direction is 180 degrees.
3. The three-dimensional measuring device according to claim 1, characterized in that: the number of the projection pieces (30) is three, and the included angles of the three projection pieces (30) in the orthographic projection direction are sequentially spaced by 90 degrees.
4. The three-dimensional measuring device according to any one of claims 2 or 3, characterized in that: an included angle between the projection piece (30) in the orthographic projection direction and the arrangement direction of the objects to be tested on the bonding pad to be tested is defined as alpha, wherein the range of the alpha is 10-110 degrees.
5. The three-dimensional measuring device according to claim 4, characterized in that: the alpha is 14 degrees.
6. The three-dimensional measuring device according to claim 1, characterized in that: get for instance (10) vertical set up in the axis position of RGB lamp panel (20), get for instance industrial camera (11) and telecentric lens (12) that (10) used including the cooperation, industrial camera (11) and telecentric lens (12) cooperation can realize that the frame resolution scope that finds a view of determinand is 1.5um ~2 um.
7. The three-dimensional measuring device according to claim 6, characterized in that: get piece (10) including 1200 ten thousand pixels industry camera (11) and magnification 3X's telecentric lens (12), the image source of industry camera (11) is 5.5 um.
8. The three-dimensional measuring device according to claim 6, characterized in that: the RGB lamp panel (20) comprises a lamp shade locking plate (21), a lamp shade main body (22), a lens limiting part (23) and an overhead lamp plate (24), wherein the lamp shade main body (22) is detachably fixed below the lamp shade locking plate (21) and used for arranging a blue LED lamp and a green LED lamp, the lamp shade locking plate (21) is provided with a yielding groove and at least one light transmitting hole (211) for projection light emitted by a projection piece (30) to pass through, the lens limiting part (23) passes through the yielding groove and extends into the lamp shade main body (22), the lens limiting part (23) is tubular, the upper end of the lens limiting part (23) is connected with the lamp shade locking plate (21), the lower end of the lens limiting part (23) is fixed with the overhead lamp plate (24), the overhead lamp plate (24) is used for fixing a red LED lamp, the lower end of the telecentric lens (12) extends to the bottom of the lens limiting part (23) and is abutted against the overhead lamp plate, the overhead lamp plate (24) is provided with a lens imaging hole (241).
9. The three-dimensional measuring device according to claim 8, characterized in that: the red LED lamp fixed below the overhead lamp plate (24) comprises an inner layer and an outer layer, the inner layer LED lamp is used for illuminating a center reference point, and the outer layer LED lamp is used for illuminating red scattered light.
10. The three-dimensional measuring device according to claim 1, characterized in that: the light source fixing frame (40) is in a hollow right-angle trapezoid block shape, and the upper surface of the light source fixing frame (40) is obliquely arranged and used for obliquely fixing the projection piece (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021368190.XU CN212227984U (en) | 2020-07-13 | 2020-07-13 | Three-dimensional measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021368190.XU CN212227984U (en) | 2020-07-13 | 2020-07-13 | Three-dimensional measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN212227984U true CN212227984U (en) | 2020-12-25 |
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| CN202021368190.XU Active CN212227984U (en) | 2020-07-13 | 2020-07-13 | Three-dimensional measuring device |
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| CN (1) | CN212227984U (en) |
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- 2020-07-13 CN CN202021368190.XU patent/CN212227984U/en active Active
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