CN103712989A - Method for detecting apparent defects of O-shaped rubber ring - Google Patents
Method for detecting apparent defects of O-shaped rubber ring Download PDFInfo
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- CN103712989A CN103712989A CN201310753011.2A CN201310753011A CN103712989A CN 103712989 A CN103712989 A CN 103712989A CN 201310753011 A CN201310753011 A CN 201310753011A CN 103712989 A CN103712989 A CN 103712989A
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Abstract
The invention discloses a method for detecting apparent defects of an O-shaped rubber ring and belongs to the field of detection of the O-shaped rubber rings. The method comprises the following steps: (1) preparing conditions; (2) preparing the O-shaped rubber ring of which the appearance is required to be detected; (3) threading the O-shaped rubber ring in a to-be-detected product box; (4) performing the process that a worker holds two ends of a steel wire and stands at a middle position between two fluorescent lamps during detection; (5) checking the O-shaped rubber ring on the steel wire; (6) spreading the qualified O-shaped rubber ring detected in the step (5) on a plastic plate; and (7) checking another sealing surface of the O-shaped rubber ring. According to the method, the illuminations and directions of the fluorescent lamps and the color of the plastic plate are controlled, so that a visual effect in the process of detecting the O-shaped rubber ring by the worker is improved, visual fatigues of the worker are avoided, the efficiency is improved, the missing inspection of the appearance can be effectively avoided, and the missing inspection rate is greatly reduced.
Description
Technical field
The invention belongs to the detection field of O type rubber ring, specifically, relate to a kind of detection method of O type rubber ring open defect.
Background technology
Rubber o-ring section structure is extremely simple, and sealing property is reliable, and simplicity of design is easy to process, installs and changes easily, is therefore used in various sealing occasions.
Rubber o-ring can produce various appearances defect in process of production, as national standard < < GB/T3452.2-2007: hydropneumatic is listed with O shape rubber ring presentation quality inspection specification > >: dislocation, mispairing, combination overlap, back flow, excessively deburring, starved and indenture, current mark etc., in later stage check, mostly be artificial visual check, but artificial visual check always produces missed detection risk.Although have now O type circle outward appearance automatic detection instrument, it, still cannot be surveyed as little indenture, current mark small open defect, still needs to increase artificial visual check operation.Generally, artificial visual check, does not have fixing checking procedure, more random, easily undetected.Therefore, a good O type circle visual testing method is very important with regard to what show.And detect for a long time this wisp of rubber o-ring, eyes can produce dizzy sensation, have a strong impact on people's judgement, produce serious visual fatigue, workman's eyes are easily caused to damage, also can cause a lot undetected simultaneously, affect product quality, also affect the quality assessment of client to company's product, lose the chance of exploitation new product, bring harmful effect to the image of enterprise.And existing Research Emphasis is all material, the mechanical property of paying close attention to rubber ring, and for open defect, because thinking, research staff can pass through artificial visually examine, so seldom there is scientific research personnel to go to pay close attention to how to detect open defect, especially scientific research personnel goes personal experience to detect at a large amount of time of expense of really not deflorating, cannot understand the misery that detects workman, cause so for many years for O type rubber ring visual testing also not have the progress of essence.So exigence provides a kind of special detection method for O type rubber ring visual testing method of system now, not only will improve detection efficiency, main is to improve visual effect, solves the visual fatigue problem that workman produces in long-term detection.
And much detect now workmans in order to improve visual fatigue; oneself is all taken specially relevant medicine and treats visual fatigue; so being also placed in, scientific research personnel's Research Emphasis researches and develops the asthenopic medicine of new treatment; Chinese publication number: 102949523A for example; open day on March 6th, 2013; disclose a kind of pharmaceutical composition for alleviating asthenopia and capsule preparation method thereof thereof, the composition that this pharmaceutical composition contains and weight proportion thereof are: 25 parts of cassia seeds, 20 parts of chrysanthemums, 15 parts of the fruits of Chinese wolfberry, 20 parts of the fruits of medicinal cornel, 10 parts of procyanidin, 10 parts of taurines.The pharmaceutical composition expection of this invention can reach the effect of alleviating asthenopia, and take cassia seed, chrysanthemum, the fruit of Chinese wolfberry, the fruit of medicinal cornel, procyanidin, taurine is primary raw material, adopts scientific and reasonable production technology to process.Although the preparation method of the drug regimen of this invention is simple, conventional equipment just can have been prepared.It is good that but old maxim is said; three minutes poison of medicine; can not allow every day workman rely on medicine to carry out alleviating asthenopia; topmostly to improve detection mode; avoid asthenopic generation, how to have treated asthenopic problem like this with regard to not existing, this is also from the viewpoint of protection check workman's; so what should solve is how to prevent to produce visual fatigue at all, this is only scientific research personnel's research emphasis.
Summary of the invention
1. the problem that will solve
For prior art, O type rubber ring open defect is detected, easily there is visual fatigue in workman, during detection, also easily there is undetected problem, the invention provides a kind of detection method of O type rubber ring open defect, it detects the open defect of O type rubber ring by simple method, detects accurately, can avoid occurring undetected, most importantly can reduce or even avoid asthenopic generation.
2. technical scheme
In order to address the above problem, the technical solution adopted in the present invention is as follows:
A detection method for O type rubber ring open defect, the steps include:
(1) condition is prepared, and two parallel daylight lamps are installed, and the illumination F of daylight lamp is 6300-7400lux, and the distance between two daylight lamps is S; Prepare two plastic plates, one is dull and stereotyped, and it is fluted that be with at middle part, and the color of plastic plate utilizes CIE1976 color system to represent: L* is 71 to 79, a* to be-30 to-15, b* to be 45 to 75;
(2) prepare the O type rubber ring of check outward appearance, be put in product box to be checked;
(3) by O type rubber ring in product box to be checked, through diameter, be that on 1.98mm, the length steel wire that is L, L equals 0.235 times of workman's height;
(4) when workman detects, the two ends of hand-held steel wire stand in two centre positions between daylight lamp, and daylight lamp is vertical with steel wire, and daylight lamp is H apart from the vertical range of steel wire; Described
wherein F' is reference light photograph, and it is A hour that workman prepares stream time, and F' size is 6500-100(A-5) lux, D is reference range, the size of D is 1m; During practical operation, first according to workman's height and the height of normally picking up steel wire, determining the parameters such as height of daylight lamp, is not to allow workman according to light, adjust the height of steel wire;
(5) the O type rubber ring on check steel wire, toggles it to the other end from one end of steel wire one by one by O type rubber ring, in the process of stirring, according to standard, unacceptable product is chosen;
(6) the qualified O type rubber ring detecting in step (5) is taped against on a plastic plate, defectiveness whether on detection O type seal with elastometic washer face, picks out defective O type rubber ring;
(7) with an other middle part, with reeded plastic plate, cover on the O type rubber ring in step (6), then use hand two plastic plates, upset, take off a plastic plate above, check another sealing surface of O type rubber ring, pick out defective O type rubber ring, remaining is certified products.
Preferably, in described step (1), the illumination F of daylight lamp is 6800lux; The color of plastic plate utilizes CIE1976 color system to represent: L* is that 75, a* is that-23, b* is 60.
Preferably, the physical dimension of the plastic plate in described step (1) is long 300mm, wide 260mm, thick 3mm.
When preferably, O type rubber ring is taped against on a plastic plate in described step (6), guarantee that the area of O type rubber ring (3) accounts for 2/3 of cardboard area.Also can be less than this area, area is little to lower efficiency, and excessively cannot once see complete all product defectses can cause the tired and range estimation of workman's arm time, lowers efficiency on the contrary.
3. beneficial effect
Than prior art, beneficial effect of the present invention is:
(1) the present invention is by controlling the illumination of daylight lamp, and the orientation of daylight lamp and the color of plastic plate are improved the visual effect of workman while detecting O type rubber ring, and protection eyes, avoid workman to occur visual fatigue situation, fundamentally solve visual fatigue problem;
(2) the present invention determines 0.235 times that the length of steel wire is workman's height from the angle of ergonomics, this is in the various parameters of the human bodies such as the ratio of the brachium with reference to people and height and definite size of the most applicable workman, have more rationality, when allowing workman feel comfortable, also improved checkability;
(3) concrete setting of the present invention will be with reference to the workman who sets the in advance duration of working, if short term detection, F' is larger, the result of bringing is that daylight lamp diminishes apart from the vertical range H of steel wire and the distance S between two daylight lamps, luminous flux strengthens, can improve workman's detection efficiency, and when the required longevity of service of workman, need to reduce the brightness of light, although efficiency when such work efficiency does not have daylight lamp to become large apart from the vertical range H of steel wire and the distance S between two daylight lamps is high, but when working long hours, can not cause visual fatigue yet, in the overall situation, do not reduce on the basis of work efficiency, protection workman's eyesight,
(4) detection method of the present invention is simple, efficient, a plurality of O type of the disposable detection of energy rubber ring, and also under the color of special light and base plate sets off, defect is more directly perceived; In view of it, can check all of O type rubber ring, when raising the efficiency, also can effectively prevent that outward appearance is undetected, loss reduces greatly;
(5) auxiliary mould cost of the present invention is low and be easy to obtain, simple to operate.
Accompanying drawing explanation
Fig. 1 is the O type rubber ring structural representation of outward appearance to be tested;
Fig. 2 is daylight lamp of the present invention and iron wire position view;
Fig. 3 is the structural representation of the present invention's iron wire used;
Fig. 4 is that the present invention middle part used is with the structural representation of fluted plastic plate.
Embodiment
Below in conjunction with concrete accompanying drawing, describe the present invention.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of detection method of O type rubber ring open defect, to the internal diameter a in Fig. 1: ∮ 11mm, wire diameter b: the O type rubber ring of ∮ 2.5mm is tested, and the steps include:
(1) condition is prepared, and two parallel daylight lamps 1 are installed, and the light sending of daylight lamp 1 is white light, and the illumination F of daylight lamp 1 is 6800lux, and the distance between two daylight lamps 1 is S; Prepare two plastic plates, one is dull and stereotyped, and it is fluted that be with at middle part, and the color of plastic plate utilizes CIE1976 color system to represent: L* is that 75, a* is that-23, b* is 60; The physical dimension of plastic plate is long 300mm, wide 260mm, thick 3mm;
(2) prepare the O type rubber ring 3 of check outward appearance, be put in product box to be checked;
(3) by O type rubber ring 3 in product box to be checked, through diameter, be that on 1.98mm, the length steel wire 2 that is L, L equals 0.235 times of workman's height; 40 check workmans select in Cong Mou rubber plant, are divided into immediately two groups, and 20 every group, first group of height is 1.58-1.81m, adopts method of the present invention; Second group of method while allowing it adopt its original work, the length of workman's the O type rubber ring 3 of wearing accounts for 1/2 of whole steel wire 2 length;
(4) when workman detects, the two ends of hand-held steel wire 2 stand in two centre positions between daylight lamp 1, and daylight lamp 1 is vertical with steel wire 2, as shown in Figure 2, vertical with steel wire because of daylight lamp in Fig. 2, so can only see one end of daylight lamp in Fig. 2; Daylight lamp 1 is H apart from the vertical range of steel wire 2; Described
wherein F' is reference light photograph, and it is A hour that workman prepares stream time, and F' size is 6500-100(A-5) lux, D is reference range, the size of D is 1m; In the present embodiment, A selects 8, H to be chosen as 1m;
(5) the O type rubber ring 3 on check steel wire 2, toggles it to the other end from one end of steel wire 2 one by one by O type rubber ring 3, in the process of stirring, according to standard, unacceptable product is chosen;
(6) the qualified O type rubber ring 3 detecting in step (5) is taped against on a plastic plate, defectiveness whether on detection O type rubber ring 3 sealing surfaces, picks out defective O type rubber ring 3;
(7) with an other middle part, with reeded plastic plate, cover on the O type rubber ring 3 in step (6), then use hand two plastic plates, upset, take off a plastic plate above, check another sealing surface of O type rubber ring 3, pick out defective O type rubber ring 3, remaining is certified products.
After the work of 8 hours, second group of workman occurs that eye acid in various degree waits visual fatigue situation, the quantity of average every people detection O type rubber ring 3 is 3003, during reinspection, find, add up to 440 undetected, on average everyone have 22 undetected, loss is 0.7%, in these 440, there are 263 to be the concavo-convex defect at die joint place, have 177 to be current mark on sealing surface; And adopted first group of the inventive method, the quantity of average every people detection O type rubber ring 3 is 4216, during reinspection, find, add up to 35 undetected, loss is 0.0415%, are all the current marks on sealing surface, most importantly in 20 workmans, one-man has occurred that slight eye is puckery, has a rest and after 10 minutes, just recovers normal.Thereby can find out, adopt method of the present invention, not only can improve checkability, and can effectively prevent the undetected of O type circle open defect, most crucial is workman's visual fatigue situation is significantly improved.
Embodiment 2
With embodiment 1, difference is: the present embodiment is to internal diameter a: ∮ 5.5mm wire diameter b: the O type rubber ring of ∮ 1.5mm detects; The illumination F of daylight lamp 1 is 7400lux; The color of plastic plate utilizes CIE1976 color system to represent: L* is that 71, a* is that-15, b* is 45; H is chosen as 1.2m, and workman needs stream time A to equal 4.The method of workman in embodiment 1 is exchanged, and second group adopts method of the present invention, first group of method of work that adopts its original place factory.
After the work of 4 hours, in first group of workman, there is the 16 people acid that goes out to lose face to wait visual fatigue situation, the quantity of average every people detection O type rubber ring 3 is 1735, during reinspection, find, add up to 207 undetected, on average everyone have 10.35 undetected, loss is 0.6%, in these 207, there are 153 to be the concavo-convex defect at die joint place, have 54 to be current mark on sealing surface; And adopted second group of the inventive method, the quantity of average every people detection O type rubber ring 3 is 2634, during reinspection, find, add up to 13 undetected, on average everyone have 0.65 undetected, loss is 0.025%, is all the current marks on sealing surface, and topmost situation is that in 20 workmans of this group, visual fatigue appears in nobody.Thereby can find out, adopt method of the present invention, not only can improve checkability, and can effectively prevent the undetected of O type circle open defect, most crucial is workman's visual fatigue situation is significantly improved.Have simultaneously phenomenon be preferably adopt the present invention undetected be all current mark, without because of the undetected situation of concavo-convex defect, illustrate that the present invention is accurate especially to detecting concavo-convex defect.
Embodiment 3
With embodiment 1, difference is: the present embodiment is to internal diameter a: ∮ 2mm wire diameter b: the O type rubber ring of ∮ 1.5mm detects; The illumination F of daylight lamp 1 is 6300lux; The color of plastic plate utilizes CIE1976 color system to represent: L* is that 79, a* is that-30, b* is 75; H is chosen as 0.8m, and workman needs stream time A to equal 2.
After the work of 2 hours, in second group of workman, there is the 2 people acid that goes out to lose face to wait visual fatigue situation, the quantity of average every people detection O type rubber ring 3 is 937, during reinspection, find, add up to 78 undetected, on average everyone have 3.9 undetected, loss is 0.4%, in these 78, there are 45 to be the concavo-convex defect at die joint place, have 33 to be current mark on sealing surface; And adopted first group of the inventive method, the quantity of average every people detection O type rubber ring 3 is 1469, during reinspection, find, add up to 3 undetected, on average everyone have 0.15 undetected, loss is 0.01%, is all the current marks on sealing surface, and in topmost 20 workmans, the situations such as visual fatigue or eye acid, eye are puckery appear in nobody.Thereby can find out, adopt method of the present invention, not only can improve checkability, and can effectively prevent the undetected of O type circle open defect, most crucial is workman's visual fatigue situation is significantly improved.
Claims (4)
1. a detection method for O type rubber ring open defect, the steps include:
(1) condition is prepared, and two parallel daylight lamps (1) are installed, and the illumination F of daylight lamp (1) is 6300-7400lux, and the distance between two daylight lamps (1) is S; Prepare two plastic plates, one is dull and stereotyped, and it is fluted that be with at middle part, and the color of plastic plate utilizes CIE1976 color system to represent: L* is 71 to 79, a* to be-30 to-15, b* to be 45 to 75;
(2) prepare the O type rubber ring (3) of check outward appearance, be put in product box to be checked;
(3) by O type rubber ring (3) in product box to be checked, through diameter, be that the steel wire (2) that 1.98mm, length are L is gone up, L equals 0.235 times of workman's height;
(4) when workman detects, the two ends of hand-held steel wire (2) stand in the centre position between two daylight lamps (1), and daylight lamp (1) is vertical with steel wire (2), and daylight lamp (1) is H apart from the vertical range of steel wire (2); Described
wherein F' is reference light photograph, and it is A hour that workman prepares stream time, and F' size is 6500-100(A-5) lux, D is reference range, the size of D is 1m;
(5) the O type rubber ring (3) on check steel wire (2), toggles it to the other end from one end of steel wire (2) one by one by O type rubber ring (3), in the process of stirring, according to standard, unacceptable product is chosen;
(6) the qualified O type rubber ring (3) detecting in step (5) is taped against on a plastic plate, defectiveness whether on detection O type rubber ring (3) sealing surface, picks out defective O type rubber ring (3);
(7) with an other middle part, with reeded plastic plate, cover on the O type rubber ring (3) in step (6), then use hand two plastic plates, upset, take off a plastic plate above, check another sealing surface of O type rubber ring (3), pick out defective O type rubber ring (3), remaining is certified products.
2. the detection method of a kind of O type rubber ring open defect according to claim 1, is characterized in that: in described step (1), the illumination F of daylight lamp (1) is 6800lux; The color of plastic plate utilizes CIE1976 color system to represent: L* is that 75, a* is that-23, b* is 60.
3. the detection method of a kind of O type rubber ring open defect according to claim 1, is characterized in that: the physical dimension of the plastic plate in described step (1) is long 300mm, wide 260mm, thick 3mm.
4. according to the detection method of a kind of O type rubber ring open defect described in any one in claim 1-3, it is characterized in that: when O type rubber ring (3) is taped against on a plastic plate in described step (6), guarantee that the area of O type rubber ring (3) accounts for 2/3 of cardboard area.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310753011.2A CN103712989B (en) | 2013-12-31 | 2013-12-31 | A kind of detection method of O type rubber ring open defect |
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| CN201310753011.2A CN103712989B (en) | 2013-12-31 | 2013-12-31 | A kind of detection method of O type rubber ring open defect |
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| CN103712989B CN103712989B (en) | 2016-02-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932006A (en) * | 2017-04-12 | 2017-07-07 | 浙江硕和机器人科技有限公司 | A kind of product quality testing equipment based on machine vision |
| CN107990932A (en) * | 2017-12-15 | 2018-05-04 | 平湖市海特合金有限公司 | Leaf, tungsten point appearance test instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932006A (en) * | 2017-04-12 | 2017-07-07 | 浙江硕和机器人科技有限公司 | A kind of product quality testing equipment based on machine vision |
| CN107990932A (en) * | 2017-12-15 | 2018-05-04 | 平湖市海特合金有限公司 | Leaf, tungsten point appearance test instrument |
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| Publication number | Publication date |
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| CN103712989B (en) | 2016-02-24 |
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