The utility model content
The purpose of this utility model is to provide a kind of bottle cap quality detection device, and this bottle cap quality detection device uses single camera to cooperate mirror system and lighting source that bottle cap is carried out 360 degree without the dead angle capture, so that bottle cap is carried out comprehensive detection.
To achieve these goals, the utility model has adopted following technical scheme:
A kind of bottle cap quality detection device, it is characterized in that: it comprises camera, mirror system, lighting source, wherein: this lighting source that is used for illuminating bottle cap position to be detected is arranged on the top of the bottle cap quality testing position that the bottle cap conveyer is provided with, the top of this lighting source is provided with this mirror system of reflection bottle cap image, the top of this mirror system is provided with this camera of bottle cap being taken via this mirror system, and the control end of this camera, lighting source links to each other with the control end of computer control system.
Described camera is face battle array industrial camera.Described lighting source is the ring illumination light source.
Described mirror system comprises upper reflector member and lower reflector elements, this upper reflector member is positioned at the top of this time reflector elements, this upper reflector member is made of N upper reflector, this time reflector elements is made of N lower catoptron, wherein: corresponding this time catoptron consists of one group of catoptron in this upper reflector in this upper reflector member and this time reflector elements, and every group of catoptron taken the image of appropriate section on the bottle cap.Described N is more than or equal to 3.
For described every group of catoptron, described upper reflector is positioned at the inboard of described lower catoptron, the reflecting surface of described lower catoptron is towards being positioned at the locational bottle cap of described bottle cap quality testing, the travelling belt plane of the residing described bottle cap conveyer of the reflecting surface of described lower catoptron and described bottle cap quality testing position rectangular or acute angle or obtuse angle, the reflecting surface of described upper reflector is relative with the reflecting surface of described lower catoptron, the travelling belt plane of the residing described bottle cap conveyer of the reflecting surface of described upper reflector and described bottle cap quality testing position in obtuse angle, the relative set between described upper reflector and described lower catoptron makes the bottle cap image of reflection complete.
The travelling belt angle that the plane is of the residing described bottle cap conveyer of the reflecting surface of described lower catoptron and described bottle cap quality testing position is between 75 degree and 100 degree, and the travelling belt angle that the plane is of the residing described bottle cap conveyer of the reflecting surface of described upper reflector and described bottle cap quality testing position is between 115 degree and 130 degree.
The optical axis of the central shaft of the central shaft of described lighting source, described upper reflector member, the central shaft of described lower reflector elements, described camera is coaxial, this axis is perpendicular to the travelling belt plane of the residing described bottle cap conveyer in described bottle cap quality testing position and run through the center of described bottle cap quality testing position, described N upper reflector axle centered by this axis of described upper reflector member distributes symmetrically, and the described N of described lower reflector elements lower catoptron axle centered by this axis distributes symmetrically.
Described every group of catoptron so that the bottle cap image that described camera photographs for take the bottle cap center as the center of circle, central angle 90 the degree to 120 the degree between image.
Described upper reflector and described lower catoptron are level crossing or prism.
The utlity model has following advantage:
The utility model illuminates bottle cap position to be detected by lighting source, use single camera via mirror system picked-up bottle cap image, realized the quality testing to bottle cap, by the appropriate design mirror system, can make the utility model that bottle cap is realized 360 degree without the dead angle capture, realization is to the comprehensive detection of bottle cap defective.
Embodiment
As depicted in figs. 1 and 2, the utility model bottle cap quality detection device is installed in the bottle cap quality testing position thatbottle cap conveyer 50 is provided with, it comprisescamera 10, mirror system,lighting source 40, wherein: thislighting source 40 that is used forilluminating bottle cap 60 positions to be detected is arranged on the top of the bottle cap quality testing position thatbottle cap conveyer 50 is provided with, the top of thislighting source 40 is provided with this mirror system of reflection bottle cap image, the top of this mirror system is provided with thiscamera 10 ofbottle cap 60 being taken via this mirror system, thiscamera 10, the control end oflighting source 40 links to each other with the control end of computer control system (not shown).
When actual design,camera 10 is chosen as face battle array industrial camera, and the irradiation target surface ofcamera 10 is towards bottle cap quality testing position and be parallel to the travelling belt plane of the residingbottle cap conveyer 50 in bottle cap quality testing position.
When actual design,lighting source 40 can be the ring illumination light source, and as depicted in figs. 1 and 2, it is the middle part hollow structure, can not hinder light transmission.The ring illumination light source of choosing in the utility model can evenly illuminatebottle cap 60 positions to be detected, and can eliminate because the bright band that the light source projection that bottlecap 60 surperficial mirror-reflections cause produces avoids impact to detect effect.
Such as Fig. 1, mirror system comprises upper reflector member and lower reflector elements, this upper reflector member is positioned at the top of this time reflector elements, this upper reflector member is made of Nupper reflector 21, this time reflector elements is made of Nlower catoptron 31, wherein: the image of appropriate section on one group of catoptron of corresponding thistime catoptron 31 formations in one in this upper reflector member thisupper reflector 21 and this time reflector elements, every group of catoptron shooting bottle cap 60.It should be noted that, the quantity ofupper reflector 21 should equal the quantity oflower catoptron 31, eachupper reflector 21 is corresponding one by one with correspondinglower catoptron 31 respectively,upper reflector 21 andlower catoptron 31 relative set in every group, N is desirable to be positive integer more than or equal to 3(N), for example, can consist of 3 groups, 4 groups, 6 groups, 8 groups catoptrons in the utility model.Upper reflector 21 andlower catoptron 31 can be selected level crossing or prism.
And for every group of catoptron, such as Fig. 1 to Fig. 3,upper reflector 21 is positioned at the inboard oflower catoptron 31, the reflecting surface oflower catoptron 31 is towards being positioned at thelocational bottle cap 60 of bottle cap quality testing, the travelling belt plane of the residingbottle cap conveyer 50 of the reflecting surface oflower catoptron 31 and bottle cap quality testing position rectangular or acute angle or obtuse angle, the reflecting surface ofupper reflector 21 is relative with the reflecting surface oflower catoptron 31, the travelling belt plane of the residingbottle cap conveyer 50 of the reflecting surface ofupper reflector 21 and bottle cap quality testing position in obtuse angle, the relative set thatupper reflector 21 and lower catoptron are 31 should make the bottle cap image of reflection complete.Preferably, the travelling belt angle that the plane is of the residingbottle cap conveyer 50 of the reflecting surface oflower catoptron 31 and bottle cap quality testing position is between 75 degree and 100 degree, and the travelling belt angle that the plane is of the residingbottle cap conveyer 50 of the reflecting surface ofupper reflector 21 and bottle cap quality testing position is between 115 degree and 130 degree.
When actual design, such as Fig. 3, can make the central shaft oflighting source 40, the central shaft of upper reflector member, the central shaft of lower reflector elements, the optical axis ofcamera 10 is coaxial, this axis L is perpendicular to the travelling belt plane of the residingbottle cap conveyer 50 in bottle cap quality testing position and run through the center O of bottle cap quality testing position, the N of a upper reflector memberupper reflector 21 axle centered by this axis L distributes symmetrically, the N of lower reflector elementslower catoptron 31 axle centered by this axis L distributes symmetrically, can guarantee so respectively to organize the bottle cap picture centre symmetry that catoptron gathers, and enlargement ratio is identical, is convenient to each bottle cap image that gathers is unified to detect.
Preferably, every group of catoptron so that the bottle cap image thatcamera 10 photographs for takebottle cap 60 centers as the center of circle, central angle at 90 degree to the image between 120 degree, just can realize that to bottlecap 60 360 degree without the dead angle capture, can carry out comprehensive detection to the bottle cap defective like this, not exist undetected.It should be noted that N is larger, the bottle cap doubling of the image part that the two adjacent groups catoptron obtains is just more.
The below illustrates the utility model as an example of 6 groups of catoptrons example.
Such as Fig. 1 and Fig. 2, the utility model among the figure comprisescamera 10, mirror system,lighting source 40, wherein:lighting source 40 is the ring illumination light source, mirror system comprises that 6 upper reflector 21(that axle distributes symmetrically centered by axis L have formed six prism-frustum-shapeds) and axle distributes symmetrically centered by axis L 6 lower catoptron 31(6lower catoptrons 31 interval same distance each other) 6 groups of catoptrons consisting of, the travelling belt plane of the residingbottle cap conveyer 50 of the reflecting surface oflower catoptron 31 and bottle cap quality testing position is rectangular, the travelling belt plane of the residingbottle cap conveyer 50 of the reflecting surface ofupper reflector 21 and bottle cap quality testing position in obtuse angle, every group of catoptron can photograph takebottle cap 60 centers as the center of circle, the image of about 90 degree of central angle.If bottle cap is right cylinder, and the bottle cap end face is positioned on the travelling belt down and transmits, then whenbottle cap 60 is sent to bottle cap quality testing position, by the catoptron of respectively organizing in the utility model 360 ofbottle cap 60 sidewalls, inwall spent comprehensive reflection, can so that sidewall and the inwall of 10 pairs ofbottle caps 60 of camera are taken, by sidewall and the inwall image of taking the bottle cap quality be detected.
Such as Fig. 1 to Fig. 3, principle of work of the present utility model is:
If making bottle cap to be detected 60 end faces be positioned on the travelling belt of bottle cap conveyer 50 up transmits, then whenbottle cap 60 reaches bottle cap quality testing position, computer controlsystem control camera 10 gathers the bottle cap image, this moment,lighting source 40 was open mode, shown in Fig. 3 is the situation that bottle cap sidewall and bottle cap top plane view picture (bottle cap sidewall and end face can be referred to as the bottle cap outer wall) are gathered, in practice, can be selectively bottle cap sidewall or bottle cap end face or bottle cap outer wall be carried out quality testing.
Particularly, every group of catoptron in 6 groups of catoptrons gathers takebottle cap 60 centers as the center of circle separately, the corresponding bottle cap image of about 90 degree of central angle, therefore, there is overlapping region at the edge of 6 bottle cap images that collect, can realize 360 degree imagings of 10 pairs ofbottle caps 60 of single camera.For one group of catoptron, example is one group of catoptron as shown in Figure 3, and this group catoptron viaupper reflector 21 andlower catoptron 31 form can carry out capture to A point on the bottle cap among the figure 60 to the bottle cap surf zone that comprises between the B point.Such as Fig. 3, lighting source 40(ring illumination light source) incident ray is through the A on thebottle cap 60, B point A1, the B1 point of surface reflection to thelower catoptron 31 respectively, then through A2, the B2 point oflower catoptron 31 mirror-reflections to theupper reflector 21, then A3, the B3 point that shines on the target surfaces tocamera 10 throughupper reflector 21 mirror-reflections, thuscamera 10 is realized the final imaging of A point on thebottle cap 60 to the bottle cap surf zone that comprises between the B point.
Aftercamera 10 collects 6 images of bottle cap via 6 groups of catoptrons, send image to computer control system, thereby computer control system is carried out Treatment Analysis according to the image that receives, bottle cap sidewall, end face defective are judged, realization is checked on to the bottle cap quality, the most at last the bad product inspection rejects.
In the utility model, computer control system is known technology, does not here describe in detail.
The utlity model has following advantage:
The utility model illuminates bottle cap position to be detected by lighting source, use single camera via mirror system picked-up bottle cap image, realized the quality testing to bottle cap, by the appropriate design mirror system, can make the utility model that bottle cap is realized 360 degree without the dead angle capture, realization is to the comprehensive detection of bottle cap defective.
Transmit if the bottle cap end face is positioned on the travelling belt up, then the utility model can carry out quality testing to bottle cap sidewall and bottle cap end face, if the bottle cap end face is positioned on the travelling belt down transmits, then the utility model can carry out quality testing to bottle cap sidewall and bottle cap inwall.
The utility model is not only applicable to the quality testing to bottle cap, also is applicable to the quality testing of central shaft symmetry or the axisymmetric object of approximate center.When practical application, according to the size of object to be detected (long-pending such as side surface, height etc.) to mirror system (formation of mirror system and distribution etc., height, reflecting surface angle such as upper and lower catoptron), camera (putting and parameter etc. of camera, height such as camera), lighting source (such as the putting of lighting source, size etc.) etc. carries out appropriate design, can realize carrying out quality testing by obtaining object to be detected 360 degree without the dead angle image.
The above is preferred embodiment of the present utility model and the know-why used thereof; for a person skilled in the art; in the situation that does not deviate from spirit and scope of the present utility model; any based on apparent changes such as the equivalent transformation on the technical solutions of the utility model basis, simple replacements, all belong within the utility model protection domain.