CN110632099A - Cover plate glass defect detection device of mobile phone screen - Google Patents
Cover plate glass defect detection device of mobile phone screen Download PDFInfo
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- CN110632099A CN110632099A CN201910799844.XA CN201910799844A CN110632099A CN 110632099 A CN110632099 A CN 110632099A CN 201910799844 A CN201910799844 A CN 201910799844A CN 110632099 A CN110632099 A CN 110632099A
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- jig
- pressing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/958—Inspecting transparent materials or objects, e.g. windscreens
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- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention relates to the technical field of screen production. A device for detecting defects of cover plate glass of a mobile phone screen comprises a rack, and a pressing mechanism, a light source assembly, a visual sensor assembly, a blocking mechanism, a positioning mechanism and a jig which are arranged on the rack; the pressing mechanism is arranged on the rack and corresponds to the jig; the blocking mechanism and the positioning mechanism are arranged at the bottom of the rack and are both positioned below the jig, and the blocking mechanism is positioned behind the positioning mechanism; the light source assembly is arranged on the rack and corresponds to the jig at the detection station; the vision sensor assembly is provided with two groups, one group is vertically arranged downwards and is positioned right above the jig, and the other group is obliquely arranged on the rack and corresponds to the jig. The invention has the advantages that the illumination is more uniform by the plurality of light sources, the visual detectors with different angles are arranged, and the detection effect is better.
Description
Technical Field
The invention relates to the technical field of screen production, in particular to a cover plate glass defect detection device of a mobile phone screen.
Background
The cover plate glass is a product which is manufactured by a series of special processing technologies such as cutting, CNC (computer numerical control), polishing, ultrasonic cleaning, vacuum coating, toughening, silk-screen printing and the like in the processing and manufacturing process. The touch screen is attached to the outermost layer of the touch screen and serves as a protective screen and a beautifying product. Therefore, the detection of the surface defects of the glass cover plate needs high detection precision and reliable polishing effect to ensure. Appearance defects are traditionally completed by visual inspection personnel, and are low in efficiency and accuracy.
The Chinese intellectual property office discloses a touch screen cover plate glass detection device with high production efficiency and the publication number of CN205607892U, which comprises a frame, a carrying mechanism, a first objective table, a clamp, a second objective table and a camera shooting mechanism; the carrying mechanism is fixed at the top of the rack; the first objective table is fixed at the top of the frame and close to one end of the carrying mechanism; the clamp and the second objective table are connected with the carrying mechanism in a sliding mode, the carrying mechanism drives the clamp to slide between the middle part and one end of the carrying mechanism, and the carrying mechanism drives the second objective table to slide between the middle part and the other end of the carrying mechanism; the bottom of the camera shooting mechanism is fixed at the top of the frame, and the upper part of the camera shooting mechanism is positioned above the middle part of the carrying mechanism. This patent has set up the centre gripping subassembly, can cause pressure to cover plate glass, arouses the deformation, influences the detection precision to the position of two cameras is not enough dispersed.
Disclosure of Invention
The purpose of the invention is: aiming at the defects in the prior art, the cover plate glass defect detection device for the mobile phone screen, which can detect surface defects, utilizes optical detection and has high detection precision, is provided.
For the purpose of the invention, the following technical scheme is adopted for realizing the purpose:
a device for detecting defects of cover plate glass of a mobile phone screen comprises a rack, and a pressing mechanism, a light source assembly, a visual sensor assembly, a blocking mechanism, a positioning mechanism and a jig which are arranged on the rack; the pressing mechanism is arranged on the rack and corresponds to the jig; the blocking mechanism and the positioning mechanism are arranged at the bottom of the rack and are both positioned below the jig, and the blocking mechanism is positioned behind the positioning mechanism; the light source assembly is arranged on the rack and corresponds to the jig at the detection station; the vision sensor assemblies are provided with two groups, one group is vertically arranged downwards and is positioned right above the jig, and the other group is obliquely arranged on the rack and corresponds to the jig;
the pressing mechanism is used for pressing the mobile phone screen to be detected, and the light source assembly and the vision sensor assembly are respectively used for illuminating the mobile phone screen to be detected and receiving light reflected by the mobile phone screen; the blocking mechanism is used for blocking feeding of the jig, and the positioning mechanism is used for positioning the jig.
Preferably, the pressing mechanism comprises a movable sliding table assembly, a support plate, a pressing cylinder, a pressing frame, a buffer frame and optical glass; the movable sliding table assembly is fixedly arranged on the rack, the support plate is arranged at the movable part of the movable sliding table assembly, the pressing cylinder is vertically arranged on the support plate, the pressing frame is connected with the support plate through a slide rail, the pressing frame is connected with the telescopic end of the pressing cylinder, four rectangular holes are formed in the horizontal plate of the pressing frame, stand columns are arranged on four corners of the buffer frame and matched in the pressing frame, a spring is sleeved outside the stand columns, the upper end of the spring abuts against the pressing frame, and the lower end of the spring abuts against the buffer frame to press the buffer frame downwards; the middle part of the buffer frame is hollow, and the optical glass is arranged in the middle of the buffer frame.
Preferably, the visual sensor assembly comprises an adjusting screw rod component, a right-angle seat and a visual sensor; the right-angle seat is connected to the rack through a sliding rail, the screw rod component is connected to the rack, a screw rod nut of the screw rod component is connected to the right-angle seat, the vision sensor is installed on the right-angle seat, the lower end of the vision sensor can receive light, and whether the surface of the screen is smooth or not is judged through the controller.
Preferably, the blocking mechanism comprises a blocking cylinder and a blocking block; the blocking cylinder is fixedly arranged on the frame, and the blocking block is arranged on the telescopic end of the blocking cylinder.
Preferably, the positioning mechanism comprises a positioning cylinder, a lifting plate, a positioning column and an infrared sensor; the positioning cylinder is arranged on the frame, and the telescopic end of the positioning cylinder is connected with the lifting plate; the lower extreme of lifter plate is provided with the guide pillar, and the lifter plate removes to be connected in the frame, the reference column setting at the lifter plate up end, last the opening of lifter plate has the slotted hole, infrared sensor set up in this slotted hole, infrared sensor sets up.
Preferably, the light source assembly is provided with three groups, the three groups are arranged outside the jig in a surrounding manner, and the light source assembly is a scattered light source.
Preferably, when the cover plate glass defect detection device of the mobile phone screen acts, the jig is conveyed to a specific position, and after the jig is detected by the infrared sensor, the blocking cylinder drives the blocking block to ascend to stop the jig from continuing to advance; then the positioning cylinder extends, and the positioning column is inserted into the bottom surface of the jig for positioning; then moving the sliding table assembly and the pressing cylinder to act together, moving the optical glass above the jig, and descending to press the screen to be detected; then three light source subassemblies circular telegram are luminous, illuminate the screen that awaits measuring, and the light that the screen surface reflected is received by the vision sensor subassembly directly over and side, and the roughness of judging the screen according to the characteristics of reverberation, whether there is the defect.
Compared with the prior art, the invention has the beneficial effects that: the optical glass is arranged to tightly press the screen to be detected, so that the horizontal arrangement of the screen is ensured, and the detection precision is improved; the upper infrared sensor and the lateral infrared sensor are arranged to receive reflected light from different angles, so that the detection reliability is improved; three groups of light source components in different directions are arranged, so that the illumination is more comprehensive, and the detection result is more accurate; the buffer frame is arranged for buffering, so that physical damage to the screen caused by rigid impact is prevented; set up positioning mechanism and fix a position the tool, make and detect all the position unification at every turn, avoid the contingency, improve the degree of accuracy that detects.
Drawings
Fig. 1 is a schematic diagram of an explosive structure according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1, a device for detecting defects of a cover glass of a mobile phone screen comprises a frame 1, and a pressing mechanism 32, a light source assembly 33, a vision sensor assembly 34, a blocking mechanism 35 and a positioning mechanism 36 which are mounted on the frame; the pressing mechanism 32 is arranged on the frame 1 and corresponds to the jig; the blocking mechanism 35 and the positioning mechanism 36 are arranged at the bottom of the rack and are both positioned below the jig, and the blocking mechanism 35 is positioned behind the positioning mechanism 36; the light source components 33 are provided with three groups, are all arranged on the rack and correspond to the jigs at the detection stations; the vision sensor assemblies 34 are provided with two groups, one group is vertically arranged downwards and is positioned right above the jig, and the other group is obliquely arranged on the rack and corresponds to the jig; the pressing mechanism 32 comprises a movable sliding table assembly 321, a support plate 322, a pressing air cylinder 323, a pressing frame 324, a buffer frame 325 and optical glass 326; the movable sliding table assembly 321 is fixedly arranged on the rack, the support plate 322 is arranged at the moving part of the movable sliding table assembly 321, the pressing cylinder 323 is vertically arranged on the support plate 322, the pressing frame 324 is connected with the support plate 322 through a sliding rail, the pressing frame 324 is connected with the telescopic end of the pressing cylinder 323, four rectangular holes are formed in the horizontal plate of the pressing frame 324, upright posts are arranged on four corners of the buffer frame 325 and matched in the pressing frame 324, springs are sleeved outside the upright posts, the upper ends of the springs are abutted against the pressing frame 324, and the lower ends of the springs are abutted against the buffer frame 325 to press the buffer frame 325 downwards; the middle part of the buffer frame 325 is hollowed out, and the optical glass 326 is arranged in the middle part of the buffer frame 325; the visual sensor assembly 34 comprises an adjusting screw rod part 341, a right-angle seat 342 and a visual sensor 343; the right-angle seat 342 is connected to a rack through a sliding rail, the screw rod part 341 is connected to the rack, a screw rod nut of the screw rod part 341 is connected with the right-angle seat 342, the visual sensor 343 is installed on the right-angle seat 342, the lower end of the visual sensor 343 can receive light, and whether the surface of the screen is flat or not is judged through the controller; the blocking mechanism 35 comprises a blocking cylinder 351 and a blocking block 352; the blocking cylinder 351 is fixedly arranged on the frame, and the blocking block 352 is arranged on the telescopic end of the blocking cylinder 351; the positioning mechanism 36 comprises a positioning cylinder 361, a lifting plate 362, a positioning column 363 and an infrared sensor 364; the positioning cylinder 361 is installed on the frame, and the telescopic end of the positioning cylinder 361 is connected with the lifting plate 362; the lower end of the lifting plate 362 is provided with a guide post, the lifting plate 362 is movably connected to the frame, the positioning post 363 is arranged on the upper end surface of the lifting plate 362, a slot hole is formed in the lifting plate 362, the infrared sensor 364 is arranged in the slot hole, and the infrared sensor 364 faces upwards.
When the cover plate glass defect detection device of the mobile phone screen works, the jig is conveyed to a specific position, and after the jig is detected by the infrared sensor 364, the blocking cylinder 351 drives the blocking block 352 to ascend to stop the jig from continuing to advance; then the positioning cylinder 361 extends, and the positioning column 363 is inserted into the bottom surface of the jig for positioning; then, the movable sliding table assembly 321 and the pressing cylinder 323 act together to move the optical glass 326 to the upper part of the jig and descend to press the screen to be detected; then three light source components 33 are electrified to emit light to illuminate the screen to be measured, light reflected by the surface of the screen is received by the visual sensor components 34 right above and on the side, and the flatness of the screen is judged according to the characteristics of the reflected light, so that whether defects exist is judged.
The cover plate glass defect detection device for the mobile phone screen solves the problem of precision error caused by unevenness during screen optical detection, and ensures that the horizontal arrangement of the screen improves the detection precision by arranging the optical glass 326 to tightly press the screen to be detected; two groups of infrared sensors 364 on the upper part and the side part are arranged to receive reflected light from different angles, so that the detection reliability is improved; three groups of light source components 33 in different directions are arranged, so that the illumination is more comprehensive, and the detection result is more accurate; the buffer frame 325 is arranged for buffering, so that physical damage to the screen caused by rigid impact is prevented; set up positioning mechanism 36 and fix a position the tool, make and detect all the position unification at every turn, avoid the contingency, improve the degree of accuracy that detects.
Claims (7)
1. The device for detecting the defects of the cover plate glass of the mobile phone screen is characterized by comprising a rack (1), a pressing mechanism (32), a light source assembly (33), a vision sensor assembly (34), a blocking mechanism (35), a positioning mechanism (36) and a jig, wherein the pressing mechanism (32), the light source assembly (33), the vision sensor assembly (34), the blocking mechanism (35) and the jig are arranged on the rack; the pressing mechanism (32) is arranged on the rack (1) and corresponds to the jig; the blocking mechanism (35) and the positioning mechanism (36) are arranged at the bottom of the rack and are both positioned below the jig, and the blocking mechanism (35) is positioned behind the positioning mechanism (36); the light source assembly (33) is arranged on the rack and corresponds to the jig at the detection station; the vision sensor assemblies (34) are provided with two groups, one group is vertically arranged downwards and is positioned right above the jig, and the other group is obliquely arranged on the rack and corresponds to the jig;
the pressing mechanism (32) is used for pressing the mobile phone screen to be detected, and the light source assembly (33) and the vision sensor assembly (34) are respectively used for illuminating the mobile phone screen to be detected and receiving light rays reflected by the mobile phone screen; the blocking mechanism (35) is used for blocking feeding of the jig, and the positioning mechanism (36) is used for positioning the jig.
2. The cover glass defect detection device of the mobile phone screen as claimed in claim 1, wherein the pressing mechanism (32) comprises a movable sliding table assembly (321), a support plate (322), a pressing cylinder (323), a pressing frame (324), a buffer frame (325) and an optical glass (326); the movable sliding table assembly (321) is fixedly arranged on the rack, the support plate (322) is arranged at a moving part of the movable sliding table assembly (321), the pressing cylinder (323) is vertically arranged on the support plate (322), the pressing frame (324) is connected with the support plate (322) through a sliding rail, the pressing frame (324) is connected with a telescopic end of the pressing cylinder (323), four rectangular holes are formed in a horizontal plate of the pressing frame (324), stand columns are arranged on four corners of the buffer frame (325) and matched in the pressing frame (324), springs are sleeved outside the stand columns, the upper ends of the springs abut against the pressing frame (324), the lower ends of the springs abut against the buffer frame (325), and the buffer frame (325) is pressed downwards; the middle part of the buffer frame (325) is hollowed out, and the optical glass (326) is arranged in the middle part of the buffer frame (325).
3. The defect detecting device for the cover glass of the mobile phone screen as claimed in claim 1 or 2, wherein the visual sensor assembly (34) comprises a regulating screw component (341), a right-angle seat (342) and a visual sensor (343); right-angle seat (342) are connected in the frame through the slide rail, and screw rod part (341) are connected in the frame, and the screw-nut of screw rod part (341) is connected with right-angle seat (342), and visual sensor (343) are installed on right-angle seat (342), and visual sensor (343) lower extreme can receive light to judge through the controller whether screen surface is level and smooth.
4. The apparatus for detecting defects of cover glass of mobile phone screen according to claim 1, 2 or 3, wherein said blocking mechanism (35) comprises a blocking cylinder (351) and a blocking block (352); the blocking cylinder (351) is fixedly arranged on the frame, and the blocking block (352) is arranged on the telescopic end of the blocking cylinder (351).
5. The device for detecting defects of cover glass of mobile phone screen according to claim 1, 2 or 3, wherein the positioning mechanism (36) comprises a positioning cylinder (361), a lifting plate (362), a positioning column (363) and an infrared sensor (364); the positioning cylinder (361) is arranged on the frame, and the telescopic end of the positioning cylinder (361) is connected with the lifting plate (362); the lower extreme of lifter plate (362) is provided with the guide pillar, and lifter plate (362) removes to be connected in the frame, reference column (363) set up in lifter plate (362) up end, last the opening of lifter plate (362) has the slotted hole, infrared sensor (364) set up in this slotted hole, infrared sensor (364) set up.
6. The device for detecting defects of cover glass of mobile phone screen according to claim 1, 2 or 3, wherein the light source assembly (33) is provided with three groups, the three groups are arranged outside the fixture in a surrounding manner, and the light source assembly (33) is an astigmatism source.
7. The device for detecting the defect of the cover glass of the mobile phone screen as claimed in claim 1, 2 or 3, wherein when the device for detecting the defect of the cover glass of the mobile phone screen is in operation, the jig is conveyed to a specific position, and after the jig is detected by the infrared sensor (364), the blocking cylinder (351) drives the blocking block (352) to ascend to stop the jig from continuing to advance; then the positioning cylinder (361) extends, and the positioning column (363) is inserted into the bottom surface of the jig for positioning; then, the movable sliding table assembly (321) and the pressing cylinder (323) act together to move the optical glass (326) above the jig and descend to press the screen to be detected; then three light source components (33) are electrified to emit light to illuminate the screen to be measured, light reflected by the surface of the screen is received by the visual sensor components (34) right above and on the side, and the flatness of the screen is judged according to the characteristics of reflected light, so that whether defects exist is judged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910799844.XA CN110632099A (en) | 2019-08-28 | 2019-08-28 | Cover plate glass defect detection device of mobile phone screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910799844.XA CN110632099A (en) | 2019-08-28 | 2019-08-28 | Cover plate glass defect detection device of mobile phone screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110632099A true CN110632099A (en) | 2019-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910799844.XA Withdrawn CN110632099A (en) | 2019-08-28 | 2019-08-28 | Cover plate glass defect detection device of mobile phone screen |
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| CN (1) | CN110632099A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111948227A (en) * | 2020-08-15 | 2020-11-17 | 深圳市信濠光电科技股份有限公司 | Crack detector for touch screen |
-
2019
- 2019-08-28 CN CN201910799844.XA patent/CN110632099A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111948227A (en) * | 2020-08-15 | 2020-11-17 | 深圳市信濠光电科技股份有限公司 | Crack detector for touch screen |
| CN111948227B (en) * | 2020-08-15 | 2021-10-12 | 深圳市信濠光电科技股份有限公司 | Crack detector for touch screen |
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Application publication date: 20191231 |