CN209167148U - A kind of detection device of pad pasting product - Google Patents
A kind of detection device of pad pasting product Download PDFInfo
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- CN209167148U CN209167148U CN201821690434.9U CN201821690434U CN209167148U CN 209167148 U CN209167148 U CN 209167148U CN 201821690434 U CN201821690434 U CN 201821690434U CN 209167148 U CN209167148 U CN 209167148U
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- 238000001514 detection method Methods 0.000 title claims abstract description 74
- 238000013519 translation Methods 0.000 claims abstract description 50
- 239000000725 suspension Substances 0.000 claims description 10
- 230000007547 defect Effects 0.000 abstract description 20
- 230000014616 translation Effects 0.000 description 31
- 230000001681 protective effect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
A kind of detection device of pad pasting product, comprising: detection platform, including the table top for placing pad pasting product, definable table top is that the direction of the face XY and vertical table-board is Z-direction；More lens groups, the electronics camera lens including multiple low depths of focus, the camera lens are at least equably arranged as a line and are adjustable as having common focal plane, and the common focal plane is parallel to the table top；Translation mechanism, for making more lens groups that the translation of opposite detection platform occur in the face XY；And Focusing mechanism, for finely tuning the camera lens at a distance from detection platform in Z-direction.This detection device can accurately and efficiently detect the film bottom defect of pad pasting product.
Description
Technical field
The utility model relates to a kind of detection devices of pad pasting product, belong to the technical field of optical detection.
Background technique
The flat panel products such as touch screen, display, surface often needs to stick certain protective film in the fabrication process
To be protected, the flat panel products of this coated with protective film are commonly referred to as pad pasting product.For pad pasting product, flat panel products ontology
Surface and protective film surface there may be open defect (as scratch, it is dirty), film bottom defect and film can be referred to as
Table defect, in general, the probability of occurrence of film table defect is very big but does not influence the quality of product, and the appearance of film bottom defect is general
Rate very little but the quality for influencing whether product, in order to guarantee the quality of product, in the manufacture of the flat panel products such as touch screen, display
In the process, the film bottom defect for pad pasting product is needed to be detected and handled.
Modern manufacturing industry often uses industrial robot combination machine vision to carry out the open defect of testing product.Touch screen or
The producer of the flat panel products such as display also wishes that electronics camera lens is used be imaged to the surface of flat panel products and machine is combined to regard
The method of feel detects the film bottom defects of pad pasting product, however, in the image that electronics camera lens obtains, film bottom defect and film table defect
(the general overlay of protective film) often mixed in together, general machine vision are difficult that its is discernable, are thus difficult
Using the method for machine vision, the film bottom defect of product is accurately and efficiently detected.
Summary of the invention
The purpose of this utility model is to provide a kind of detection device of pad pasting product, can accurately and efficiently detect to paste
The film bottom defect of film product, used design scheme are as follows:
A kind of detection device of pad pasting product, it is characterized in that, comprising:
Detection platform, including the table top for placing pad pasting product, definable table top is that the direction of the face XY and vertical table-board is Z
Direction；
More lens groups, the electronics camera lens including multiple low depths of focus, the camera lens are at least equably arranged as a line and adjustable
Section is with common focal plane, the common focal plane is parallel to the table top；
Translation mechanism, for making more lens groups that the translation of opposite detection platform occur in the face XY；And
Focusing mechanism, for finely tuning the camera lens at a distance from detection platform in Z-direction.
In above-mentioned more lens groups, electron mirror head is generally suspended on detection platform and face detection platform.Low depth of focus
Electronics camera lens of the camera lens, that is, depth of focus less than 50 μm can be specifically the microlens that object lens enlargement ratio is 5X or more, on
The width in the visual field (the touch screen area that i.e. monochromatic camera shooting is able to detect that for the first time) of camera lens is stated generally within 20mm, camera lens
Generally it is fixed to each other by rigid mount (such as metal suspension) to keep mutual position.The number of camera lens is greater than 2, arrangement side
Formula is including at least a line (in the present specification, " row " along the X direction), it can only comprising a line, or comprising in the Y direction
Upper tool spaced two or multirow.The camera lens is connected with power supply line and signal wire (or video line), and power supply line is used to be camera lens
Power supply, and camera lens institute captured image can be transferred to computer to carry out the knowledge of the image of machine vision by signal wire (or video line)
Other places reason.
In a preferred embodiment of the utility model, the translation mechanism includes X translation mechanism and Y translation mechanism, the X
Translation mechanism and Y translation mechanism are arranged in more lens groups, thus can make more lens groups that the translation of X, Y-direction occur.
In another preferred embodiment of the utility model, the translation mechanism includes X translation mechanism and Y translation mechanism, institute
It states X translation mechanism and Y translation mechanism is arranged in detection platform, thus can make the detection platform that X-direction and/or Y occur
The translation in direction, and the camera lens detected is fixed, can reduce the shake of camera, guarantee that image obtained is more clear.
In the another preferred embodiment of the utility model, the translation mechanism includes X translation mechanism and Y translation mechanism, institute
It states X translation mechanism to be arranged in more lens groups, the Y translation mechanism is arranged in detection platform, and detection platform only needs to do as a result,
The movement of Y-direction, so that the overall structure of detection device is simpler, volume is smaller.
Typically, in above-mentioned each scheme, X, Y translation mechanism can be for using electric motors, especially stepper motor
The translation screw mechanism or synchronous belt mechanism of drive.X, translation caused by Y translation mechanism (such as translational velocity, translation away from
From) can be controlled by computer, to cooperate each camera lens to carry out Image Acquisition, guarantee that camera lens acquired image can be covered
Cover each region of detection platform (or pad pasting product).In general, in more lens groups, it is assumed that camera lens in the X direction between
Away from for D, then more lens groups at most only need the distances of mobile D (generally only to need the distance of mobile D-W, W is camera lens in the X direction
Visual field width).
In a preferred embodiment of the utility model, multiple low depth of focus camera lenses in more lens groups are fixed on suspension
On, the suspension is connect by Z axis micro-adjusting mechanism with detection device.In this scheme, each lens design (or can be presetting)
For with common focal plane, can be changed as a result, by Z axis micro-adjusting mechanism each camera lens and detection platform table top in more lens groups away from
From achieving the purpose that focusing, and entire more lens groups only use one group of Z axis micro-adjusting mechanism, structure is relatively simple.
In another preferred embodiment of the utility model, in more lens groups, multiple low depth of focus camera lenses pass through respective
Z axis micro-adjusting mechanism connect with suspension, each camera lens in more lens groups thus can be changed and reach at a distance from detection platform table top
The purpose of focusing.In this scheme, each camera lens can independently focus, from there through computer to each Z axis micro-adjusting mechanism
Control, can further increase the automation of detection process.
Typically, above-mentioned Z axis micro-adjusting mechanism can be for using electric motor, especially stepper motor or supersonic motor band
Dynamic fine tuning screw mechanism, or flexible piezoelectric ceramics mechanism is carried out in Z-direction using piezoelectric ceramics.
When carrying out film bottom defects detection to pad pasting product using the detection device of the utility model, pad pasting product can be placed on to inspection
On scaffold tower, the imaging surface of camera lens is adjusted to the film bottom of pad pasting product by Focusing mechanism, since the protective film of pad pasting product generally has
There is 50 μm or more of thickness, and the depth of focus of camera lens is less than 50 μm, when the imaging surface of camera lens is adjusted to the film bottom of pad pasting product, camera lens
The image of film table defect that may be present will blur within sweep of the eye, and the image of virtualization is easy to give by machine vision
It excludes, and after excluding film table defect, machine vision will accurately detect the film bottom defect of product.The utility model
Detection device can be by the translation of more lens groups, so that the visual field of camera lens covers each area of detection platform (or pad pasting product)
In domain, although the visual field of low depth of focus mirror is narrow, in this detection device, due to being equipped with multiple evenly distributed camera lenses, cooperation
The relative movement of more lens groups synchronizes acquisition image, also can guarantee the efficiency of detection.
It is described further below by way of the drawings and specific embodiments.
Detailed description of the invention
Fig. 1 is the outline structural diagram of the detection device of embodiment one；
Fig. 2 is the front schematic view of the detection device of embodiment one；
Fig. 3 is the camera lens schematic diagram of the detection device of embodiment one；
Fig. 4 is the front schematic view of the detection device of embodiment two；
Fig. 5 is the camera lens schematic diagram of the detection device of embodiment two；
Fig. 6 is another camera lens schematic diagram of the detection device of embodiment two；
Fig. 7 is the front schematic view of the detection device of embodiment three；
Fig. 8 is the outline structural diagram of the detection device of example IV；
Fig. 9 is the front schematic view of the detection device of example IV.
Specific embodiment
Embodiment one
As shown in Fig. 1-3, the detection device 100 of pad pasting product, including detection platform 10 and more lens groups 20.
Detection platform 10 is equipped with Y screw rod for placing pad pasting product (such as capacitance touch screen) 200 to be detected, detection platform 10
(Y translation mechanism) 11, Y screw rod 11 under the control of stepper motor 111, can be such that detection platform 10 translates in the Y direction；
More lens groups 20 include the electronics camera lens 22 of aluminium alloy suspension 21 and multiple low depths of focus (depth of focus < 50 μm), camera lens 22
Visual field width in the X direction is Wx, camera lens 22 is fixed on suspension 21 according to space D and is equably arranged as a line；It is each
Camera lens 22 can be adjusted to the common focal plane for being parallel to table top by adjusting screw 221 (nothing is drawn in figure)；Suspension 21 passes through Z
Screw rod 211 and X screw rod (X translation mechanism) 23 are connect with the support column 30 of 100 two sides of detection device, wherein Z screw rod 211 (including
Stepper motor) it is used as Focusing mechanism, for changing camera lens 22 at a distance from detection platform 10, the cunning of Z screw rod 211 and X screw rod 23
Block 231 connects, and X screw rod 23 constitutes translation mechanism with Y screw rod 11 under the control of stepper motor 232, so that more lens groups 20 can
It is translated so that opposite detection platform 10 occurs in the face XY.
When carrying out the detection of pad pasting product 200, pad pasting product 200 (can be posted the transparent plastic protection with a thickness of 100 μm
Film) it is placed in detection platform 100, the imaging surface of camera lens 22 is adjusted to the film to 200 protective film of pad pasting product by Z screw rod 211
Bottom (in figure without draw), then more lens groups 20 are controlled by X screw rod 23 and carries out X-axis translations (translation distance only needs as D-Wx) to obtain
The image for obtaining a line (is translated when obtaining the image for completing a line and then being translated by the Y-axis that Y screw rod 11 controls detection platform 10
Distance Wy), to obtain the image of next line, by repeating above-mentioned movement, the film bottom of available entire 200 protective film of pad pasting product
Image, since the protective film of pad pasting product 200 has 100 μm of thickness, and the depth of focus of camera lens 22 is less than 50 μm, when camera lens 22 at
When image planes are adjusted to the film bottom of 200 protective film of pad pasting product, in the figure of the film table defect that may be present within sweep of the eye of camera lens 22
As that will blur, the image of virtualization is easy to be excluded by machine vision, and after excluding film table defect, machine view
Feel the film bottom defect that will accurately detect pad pasting product 200.Due to using a plurality of lenses 22, more lens groups 20 are in the side X
Mobile D-W is only needed upwardsxDistance, thus have very high detection efficiency.
In other schemes of the present embodiment, X screw rod, Y screw rod also could alternatively be the electricity such as X synchronous belt, Y synchronous belt
Dynamic translation mechanism.
Embodiment two
As shown in Figure 4,5, on the basis of example 1, Z screw rod 211 (including stepper motor) is changed to be arranged each
On camera lens 22, each camera lens is independently focused, then constitutes the embodiments of the present invention two.
As shown in fig. 6, Z screw rod 211 can also be changed to piezoelectric ceramics 211 ' in other schemes of embodiment two, it is same
Sample can play the effect of adjusting.
Embodiment three
As shown in fig. 7, translating bring vibration on the basis of embodiment one or two to reduce more lens groups 20, mentioning
Height obtains the quality of image.X screw rod 23 is changed to be arranged under detection platform 10, detection platform 10 is allowed to do the flat of the face XY
It moves, and more lens groups 20 are fixed, then constitute the embodiments of the present invention three.
Example IV
As shown in Figure 8, Figure 9, on the basis of embodiment one or two, increase the number of electronics camera lens in its more lens group 20
Amount, and increased camera lens 22 ' is arranged on other rows, enables projection of the field range of camera lens 22,22 ' in X-axis
Cover X-axis；And save X screw rod, then constitute the embodiments of the present invention four.Using example IV detection device 100 into
When the detection of row pad pasting product 200, it is only necessary to translate detection platform 10 in Y-axis by Y screw rod 11, can be obtained pad pasting product 200
The image on surface, detection efficiency are higher.
In addition, it should be noted that, the specific embodiments described in this specification, each section title etc. can not
Together, all equivalent or simple changes done according to structure, feature and principle described in the concept of the patent of the utility model are included in this
In the protection scope of utility model patent.Those skilled in the art of the present invention can be to described specific reality
Example is applied to do various modifications or additions or be substituted in a similar manner, structure without departing from the utility model or
Beyond the scope defined by this claim, it all should belong to the protection range of the utility model.
Claims (9)
1. a kind of detection device of pad pasting product, it is characterized in that, comprising:
Detection platform, including the table top for placing pad pasting product, definable table top is that the direction of the face XY and vertical table-board is the side Z
To；
More lens groups, the electronics camera lens including multiple low depths of focus, the camera lens are at least equably arranged as a line and are adjustable as
With common focal plane, the common focal plane is parallel to the table top；
Translation mechanism, for making more lens groups that the translation of opposite detection platform occur in the face XY；And
Focusing mechanism, for finely tuning the camera lens at a distance from detection platform in Z-direction.
2. detection device as described in claim 1, it is characterized in that: the depth of focus of the camera lens is less than 50 μm.
3. detection device as described in claim 1, it is characterized in that: the camera lens is the microscope that enlargement ratio is 5X or more
Head.
4. detection device as described in claim 1, it is characterized in that: the arrangement mode of the camera lens is including at least a line.
5. detection device as described in claim 1, it is characterized in that: the translation mechanism includes X translation mechanism and Y translation machine
Structure, the X translation mechanism and Y translation mechanism are arranged in more lens groups.
6. detection device as described in claim 1, it is characterized in that: the translation mechanism includes X translation mechanism and Y translation machine
Structure, the X translation mechanism and Y translation mechanism are arranged in detection platform.
7. detection device as described in claim 1, it is characterized in that: the translation mechanism includes X translation mechanism and Y translation machine
Structure, the X translation mechanism are arranged in more lens groups, and the Y translation mechanism is arranged in detection platform.
8. detection device as described in claim 1, it is characterized in that: multiple low depth of focus camera lenses in more lens groups are fixed on
On suspension, the suspension is connect by Z axis micro-adjusting mechanism with detection device.
9. detection device as described in claim 1, it is characterized in that: in more lens groups, multiple low depth of focus camera lenses pass through
Respective Z axis micro-adjusting mechanism is connect with suspension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821690434.9U CN209167148U (en) | 2018-10-18 | 2018-10-18 | A kind of detection device of pad pasting product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821690434.9U CN209167148U (en) | 2018-10-18 | 2018-10-18 | A kind of detection device of pad pasting product |
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| CN209167148U true CN209167148U (en) | 2019-07-26 |
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| CN201821690434.9U Active CN209167148U (en) | 2018-10-18 | 2018-10-18 | A kind of detection device of pad pasting product |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113281950A (en) * | 2020-02-03 | 2021-08-20 | 三星电机株式会社 | Camera module and portable electronic device including the same |
| CN116754566A (en) * | 2023-08-17 | 2023-09-15 | 绍兴旭源新材料科技有限公司 | Flexible folding screen protective film detection method |
-
2018
- 2018-10-18 CN CN201821690434.9U patent/CN209167148U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113281950A (en) * | 2020-02-03 | 2021-08-20 | 三星电机株式会社 | Camera module and portable electronic device including the same |
| CN116754566A (en) * | 2023-08-17 | 2023-09-15 | 绍兴旭源新材料科技有限公司 | Flexible folding screen protective film detection method |
| CN116754566B (en) * | 2023-08-17 | 2023-10-31 | 绍兴旭源新材料科技有限公司 | Flexible folding screen protective film detection method |
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