CN103988047A - Method for evaluating coated film thickness and coating range of wax, and coating inspection system - Google Patents

Method for evaluating coated film thickness and coating range of wax, and coating inspection system Download PDF

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Publication number
CN103988047A
CN103988047A CN201280058045.3A CN201280058045A CN103988047A CN 103988047 A CN103988047 A CN 103988047A CN 201280058045 A CN201280058045 A CN 201280058045A CN 103988047 A CN103988047 A CN 103988047A
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China
Prior art keywords
coating
wax
temperature
film thickness
lower limit
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CN201280058045.3A
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Chinese (zh)
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CN103988047B (en
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中田裕二
塚本信久
高垣公志
川村贵纪
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Daihatsu Motor Co Ltd
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Daihatsu Motor Co Ltd
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Priority claimed from JP2012241072A external-priority patent/JP6124394B2/en
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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
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
    • G01B21/085—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness using thermal means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/72—Investigating presence of flaws

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

A method for evaluating coated film thickness of wax is provided with: a temperature acquisition step for acquiring the front surface temperature of a member to be coated that has not been coated with the wax and the back surface temperature of a region coated with the wax by capturing an image of the member to be coated by an infrared thermograph; an actual temperature difference calculation step for calculating the actual temperature difference between the back surface temperature of the coated region and the front surface temperature before the coating; a theoretical formula derivation step for, on the basis of a coating condition of the wax for the member to be coated, derives a theoretical formula indicating the relation between the temperature difference between the back surface temperature of the coated region and the front surface temperature before the coating, and the coated film thickness of the wax; and a coated film thickness evaluation step for evaluating the actual coated film thickness of the wax from the actual temperature difference using the theoretical formula.

Description

The coating film thickness of wax and coating scope evaluation method and coating check system
Technical field
The present invention relates to evaluate the coating film thickness of wax and the method for coating scope and coating check system, particularly evaluate coating film thickness and the method for coating scope and the coating check system that is coated with the inspection of operation for the Temperature Distribution based on dispensing area of the wax that is coated on position that can not be visual.
Background technology
For example, in the coating process of the car body of automobile, the corrosion of the steel plate that prevents that the immersion of rainwater etc. from causing of take is object, and antirust treatment process is set, and is coated with the wax of antirust use to forming the pocket structure portion of the door of car body and car bonnet (hood) etc. after coating process.
As described above, owing to being coated with the object of this wax, be antirust, therefore, after the coating operation of wax, need to check and whether be suitably coated with wax, particularly, check whether the wax being coated with has the coating film thickness that can bring into play the degree of enough rustless properties, or check whether be coated on and can bring into play in the scope of enough rustless properties.Yet the coating position of above-mentioned wax, therefore can being limited in scope with visual direct confirmation owing to being the inner face of the pocket structure portion of door and car bonnet etc.For this reason, be difficult to confirm the coating film thickness of All Ranges, be difficult in addition not leak coating scope and confirm.Thereby for this inspection, present situation is to carry out its coating weight of Indirect evaluation (size in the region that coating film thickness or reality have been coated with) according to wax from being arranged at the situation of of the osculum of applied parts (door etc.).
In addition, the some of sampling termly, checks with endoscope, or carry out Visual Confirmation after disintegrating, but no matter which kind of method confirms that quantity is all inevitable less, because the degree of deviation is indefinite, so sufficient quality guarantee of having carried out based on total amount evaluation hard to say.
On the other hand, the various parts for forming car body, are not limited to wax, to seek the functional object that rises to that waits appearance design or sealing and rust-preventing characteristic etc. attractive in appearance, carry out the coating operation of various applications and sealer etc.Therefore because these coating states all bring greater impact the quality of applied parts and performance, when coating or after coating, above-mentioned coating state is checked to judge that well whether it.
At this, when the inspection of coating operation, reality has adopted: according to operator's the visual method checking, the image based on being obtained by image units such as video cameras, judge the actual various detection methods such as method that whether good it is.On the other hand, in the situation that the bag-shaped parts of car bonnet or door-plate etc. are coated with to operation, for the coating things such as wax being applied to the inside of bag-shaped parts, also need to check the coating state of this inside.Yet, with the image unit of visual or common video camera of operator etc., be difficult to confirm inner coating state.
For this reason, in order dealing with problems, in following patent documentation 1, to disclose by parsing infrared thermal imager (thermograph) and taken the method that image that the applied position of car body obtains is evaluated the coating state of wax.This evaluation method is following gimmick specifically: by the image of taking with infrared thermal imager and obtaining according to pixels unit cut apart, and the rate of rise in temperature of each unit picture element of computed segmentation, itself and predefined 2 threshold values are compared, judge that it is to be directly coated with wax and the temperature that causes rise (being greater than the situation of high threshold value) that temperature in this unit picture element rises, or the temperature causing from the thermal diffusion of wax rises (situation that represents the value between upper and lower threshold value), carry out thus to determine the scope of coating distribution.In addition, above-mentioned a series of processing is undertaken by data processing equipment, and the analytical algorithm of this data processing equipment storage for carrying out this processing can send by infrared camera and take and the thermographic image data that obtains.
Look-ahead technique document
Patent documentation
Patent documentation 1:JP JP 2010-112806 communique
The summary of invention
The problem that invention will solve
So, the assessment technique of recording according to above-mentioned patent documentation 1 is evaluated the coating state of wax although can not destroy coating object (door etc.), the actual scope that only has dispensing area that can evaluate, incorrect its coating film thickness of evaluating.This is because the relation of said temperature ascending velocity and coating film thickness is not yet clear and definite.In addition, owing to can producing deviation in the surface temperature as the car body of mobile coating object on production line, therefore, even if suppose to know the relation of rate of rise in temperature and coating film thickness, be also difficult to always with the benchmark (threshold value) of fixing, evaluate the rate of rise in temperature at the dispensing area back side.
For example, although can also consider to measure with noncontact determinators such as laser displacement gauges the method for coating film thickness, but this determinator is high price not only, and in the situation that use the mensuration of the coating film thickness in such device pocket structure very difficult, this point does not change yet.And then, owing to controlling and adjusting, also likely can become complicated, the coating film thickness that is unsuitable for the such wax of this part is measured.
In addition, about the evaluation of coating scope, in the assessment technique of recording at above-mentioned patent documentation 1, for serviceability temperature ascending velocity, evaluate coating scope, after the end of job, need for resolving the time of captured image.If due to not resolve the time through not just being coated with the evaluation of scope later, so can cause the increase of activity duration, further cause the increase of operating cost.In addition, in the situation that the door that applied parts are car body and car bonnet etc., the coating operation expectation of wax is carried out a plurality of doors and car bonnet by a plurality of operators simultaneously.But, in this case, even if want to start the continuous set time from being just coated with, take the back side of given wax dispensing area, also the obstruction due to other operator or door etc. is difficult to take continuously as described above.For this reason, need 11 ground carry out the coating operation of door and take operation, identical with above-mentioned situation, all can cause the increase of activity duration.
In addition, the inspection method of recording according to patent documentation 1, by implementing certain processing to taken the thermographic image data obtaining by infrared camera, thereby can determine dispensing area automatically.But, in the situation that this coating operation is the operation of region (inside of bag-shaped parts) that can not vision identification being carried out by operator, in any case producing the possibility of holiday all can uprise, in addition, to producing the region of holiday, to be again coated with the needs of (carrying out recoat) also not within minority.In the inspection method of recording at patent documentation 1, the monitor that displays temperature distributes is set in data processing equipment, but to the not special record of its equipping position.In addition, use personal computer as data processing equipment.So, in the situation that become, can directly not confirm forming of check result by coating operator, in the situation that needing recoat, be coated with operator and be difficult to correctly and promptly grasp for the needed information of this recoat (region that has holiday at this time point).
Summary of the invention
In view of above situation, by usining easy method, evaluate the coating film thickness of wax as the problem of the 1st technology that will solve by the present invention totally.
In addition, in view of above situation, within the short time, the total coating scope of wax of evaluating is as the problem of the 2nd technology that will solve by the present invention.
In addition, in view of above situation, using provide coating operator can be correctly and the coating check system of check result of promptly grasping coating operation as the problem of the 3rd technology that will solve by the present invention.
For solving the means of problem
The solution of the problem of described the 1st technology is reached by the coating film thickness evaluation method of the related wax in the 1st side of the present invention.; this evaluation method is characterised in that; possess: temperature obtains operation, by with infrared thermal imager, take applied parts obtain the uncoated wax in described applied parts uncoated area surface temperature and be coated with the back temperature in the region of described wax; The poor operation of calculating of actual temperature, the actual temperature of calculating the back temperature of described dispensing area and the surface temperature of described uncoated area is poor; Theoretical formula derives operation, the coating condition of the described wax based on for described applied parts, the theoretical formula of the relation of the temperature difference described in induced representation between the back temperature of dispensing area and the surface temperature of described uncoated area and the coating film thickness of described wax; Evaluate operation with coating film thickness, use described theoretical formula, according to the poor evaluation of carrying out the actual coating film thickness of described wax of described actual temperature.
Becoming the door of coating object of wax and the common steel plate by thin-walled such as car bonnet etc. forms.In addition, while the coating operation of wax is owing to being that the coating gun that scans wax carries out given region, therefore from coating, start till coating finishes to need the regular hour.For this reason, after coating operation has just started, in the dispensing area of wax, from be coated with wax to applied parts, carry out heat transmission, after coating the completing of operation, in reality, can take with infrared thermal imager the time point of the back temperature of dispensing area, infer that the dispensing area of wax and applied parts reaches Isothermal Condition or the state close with it.The heat that the wax that now ascending temperature of applied parts is coated with to some extent in addition has, be the coating weight higher tendency more at most of wax.In view of above point, inventors of the present invention obtain following opinion: if ask for the back temperature in applied region and the temperature difference of surface temperature in the region of uncoated wax and the theoretical formula between the coating film thickness of wax after the coating wax in applied parts, and evaluate actual coating film thickness based on this theoretical formula, can implement accurately to all vehicles the evaluation of the coating film thickness of wax.
The present invention is based on above-mentioned opinion forms, due to the temperature difference of the dispensing area with wax and uncoated area and and the measured value of coating film thickness between confirmed certain matching theoretical formula determine the metewand of coating film thickness, therefore the impact of the deviation of the temperature of each applied parts can be suppressed to Min., can high precision and have reliability and carry out thickness evaluation.In addition, owing to measuring with infrared thermal imager the back temperature of dispensing area and the surface temperature of uncoated area of applied parts, evaluate thus coating film thickness, even be therefore difficult to the coating film thickness at visual position, also can easily and correctly evaluate.In addition, due to as long as can measure the surface temperature in region and the back temperature of coating the dispensing area after the set time of uncoated wax, therefore measure operation self and can on the basis of not destroying, implement, and complete at short notice.For this reason, can not cause especially the activity duration increase carry out the total evaluation of coating film thickness, can seek the lifting of further quality guarantee function.Certainly, the sensing equipment needing due to essence only has infrared thermal imager, therefore can also avoid the significantly increase of equipment cost.
In addition, the coating film thickness evaluation method of the wax that the 1st side of the present invention is related can be also, in temperature, obtains in operation, obtains the surface temperature of the applied parts before coating wax as the surface temperature of uncoated area.
So, by obtaining the surface temperature of the applied parts of coating before wax as the surface temperature of uncoated area, the temperature difference before and after the coating in can the coating presumptive area based on wax is evaluated coating film thickness.Thus, can take the surface temperature that is not subject to the applied parts under (occurrence temperature changes) state of the impact that heat that the coating of wax causes transmits completely evaluates the coating film thickness of wax as benchmark.In addition, can not be subject to each applied parts temperature deviation impact carry out stable thickness and evaluate.
In addition, as described above, in the situation that obtain the surface temperature of the applied parts before coating wax as the surface temperature of uncoated area, also can further in temperature, obtain in operation, by take the back side of coating presumptive area of the wax of applied parts with infrared thermal imager, obtain the back temperature of dispensing area and the surface temperature before coating.
So, if obtain the temperature of coating front and back by take the back side of the coating presumptive area of wax with infrared thermal imager,, in the situation that hypothesis has temperature deviation in applied parts, also can measure the temperature in the region that is suitable for obtaining most, as the surface temperature before wax coating.Thereby, can obtain the actual temperature corresponding with theoretical formula poor, can further promote the evaluation precision of coating film thickness.In addition, owing to making the relative position (camera site) of applied parts and infrared thermal imager fixing before and after the coating across wax, therefore can avoid thickness to evaluate the complicated of needed equipment, can avoid thus the increase of equipment cost.
Or the coating film thickness evaluation method of the wax that the 1st side of the present invention is related can be also, in temperature, obtain in operation, obtain the surface temperature of the applied parts except the coating presumptive area of wax as the surface temperature of uncoated area.
Purport of the present invention is, dispensing area based on wax and the actual temperature of uncoated area be poor evaluate and this actual temperature confirmed by experiment the coating film thickness of the wax of given matching between poor, in view of this point, become the uncoated area of the wax of obtaining object of surface temperature, being not limited to the coating presumptive area of wax, for example, can be also the region that the coating presumptive area from wax in applied parts departs from.So, by the region that the coating presumptive area from wax is departed from, be made as the region of obtaining of surface temperature, in the situation that the coating presumptive area that for example can not stably take wax with infrared thermal imager across the front and back of coating operation by operator or peripheral equipment, the coating presumptive area in applied parts and wax of yet take does not have the surface temperature in region (if such as door-plate for position above it etc.) of direct relation, and as benchmark, to calculate actual temperature poor.In addition, if the region separated with coating presumptive area, temperature variation in the coating operation causing due to heat transmission also very, or be inferred as the rank that can ignore, therefore, be not limited to be coated with before operation, be just coated with at last the surface temperature in this region of obtaining in operation process, also can not have any problem and use as the poor benchmark of calculating of actual temperature.
In addition, the coating film thickness evaluation method of the wax that the 1st side of the present invention is related can be also, also possess: lower limit allowable value is set operation, based on theoretical formula, set the lower limit allowable value of the temperature difference corresponding with the lower limit allowable value of coating film thickness, in coating film thickness, evaluate in operation, calculating by taking the actual temperature obtain with infrared thermal imager poor is region more than the lower limit allowable value of temperature difference, and only shows this region more than lower limit allowable value in the monitor setting in the position that the coating operator of wax can vision identification.
If as described above, can only show the part with the big or small coating film thickness that reality can allow at monitor.Thus, the coating operator of wax can not only correctly grasp the position that coating weight (coating film thickness) is not enough, after can also just confirming in monitor, just carries out the recoat of wax.Thus, can within the very short time, comprise the coating operation of the wax of recoat.
In addition, the solution of the problem of described the 2nd technology is reached by the coating scope evaluation method of the related wax in the 2nd side of the present invention.; this evaluation method is characterised in that; possess: temperature obtains operation, by take applied parts with infrared thermal imager, obtain the surface temperature of uncoated area of the uncoated wax in applied parts and the back temperature of the dispensing area of coating wax the wax after the set time; The poor operation of calculating of actual temperature, the actual temperature of calculating the back temperature of dispensing area and the surface temperature of uncoated area is poor; Lower limit allowable value is set operation, and the temperature of considering the dispensing area that the coating of wax causes rises to set the lower limit allowable value of the temperature difference of the back temperature of dispensing area and the surface temperature of uncoated area; Evaluate operation with coating scope, lower limit allowable value poor based on actual temperature and temperature difference is evaluated the coating scope of wax, in lower limit allowable value is set operation, the temperature that adds the uncoated area that the heat transmission from the dispensing area of wax to uncoated area causes rises and carrys out the poor lower limit allowable value of design temperature.
So, in the present invention, because the temperature difference of the surface temperature in region of the uncoated wax based in applied parts and the back temperature of the dispensing area of coating wax the wax after the set time is evaluated coating scope, therefore, can be respectively the dispensing area of wax and uncoated area be carried out to the coating scope that wax is evaluated in temperature measuring (shooting) operation of 1 time 1 time.Thus, the evaluation gimmick than the existing infrared thermal imager that need to continue continuously to take after just coating, can shorten the needed time of temperature measuring operation.In addition, owing to needing only the surface temperature in the region that can measure the uncoated wax in applied parts and the back temperature of coating the dispensing area after the set time, therefore measuring operation self can implement under the prerequisite of not destroying, and complete at short notice.So, the total coating scope of evaluating in increase ground of activity duration can be do not caused especially, the lifting of further quality guarantee function can be sought.
In addition, in the present invention, when setting the poor lower limit allowable value of said temperature, the temperature of not only considering the dispensing area that the coating of wax causes rises, the temperature of also considering from the dispensing area of wax to the uncoated area being adjacent the uncoated area that the heat transmission of (thereby can be also regions different from the uncoated area of the wax of obtaining object that becomes surface temperature result) causes rises, and carrys out the poor lower limit allowable value of design temperature.In the coating operation of this wax, the coating weight of the wax of actual needs is not so much, on the other hand, in the situation that form applied parts by steel plate, the more remarkable material of the such thermal conductivity of aluminium alloy plate, the temperature ascending amount of the uncoated area that the heat transmission from the dispensing area of wax to the uncoated area being adjacent causes becomes the size that can not ignore.In view of above point, in the present invention, the temperature of the uncoated area causing due to the heat transmission of also considering from dispensing area rises to set the poor lower limit allowable value of said temperature, therefore can avoid the region erroneous judgement that is not suitably coated with wax to be decided to be the state of affairs of dispensing area.In addition, in the situation that the coating operation ratio of wax is scheduled to elongate or complete in shorter time, due to from coating starts until the elapsed time change of taking, therefore there is deviation in the value of the actual temperature difference obtaining, if add as described above, the temperature causing to the heat transmission of uncoated area rises to evaluate, and can evaluate accurately with the ground of taking that it doesn't matter constantly the coating scope of wax.In addition, can improve the reliability with respect to evaluation result.
In addition, the coating scope evaluation method of wax involved in the present invention can be also, in temperature, obtains in operation, obtains the surface temperature of the applied parts before coating wax as the surface temperature of uncoated area.
So, by obtaining the surface temperature of the applied parts of coating before wax as the surface temperature of uncoated area, the temperature difference before and after the coating of coating presumptive area that can be based on wax is evaluated coating scope.Thus, can take the surface temperature that is not subject to the applied parts under (occurrence temperature changes) state of the impact that heat that the coating of wax causes transmits completely evaluates the coating scope of wax as benchmark.In addition, can not be subject to each applied parts temperature deviation impact obtain the evaluation result of stable coating scope.
Or the coating scope evaluation method of wax involved in the present invention can be also, in temperature, obtain in operation, obtain the surface temperature of the applied parts except the coating presumptive area of wax as the surface temperature of uncoated area.
Purport of the present invention is, the temperature that adds the dispensing area that the coating of waxing causes rises and the temperature of the uncoated area that the heat transmission from the dispensing area of wax to the uncoated area being adjacent causes rises, carry out the poor lower limit allowable value of design temperature, in view of this point, the uncoated area that becomes the wax of obtaining object of surface temperature is not limited to the coating presumptive area of wax, for example, can be also the region that the coating presumptive area from wax in applied parts departs from.So, by the region that the coating presumptive area from wax is departed from, be made as the region of obtaining of surface temperature, in the situation that the coating presumptive area that for example can not stably take wax with infrared thermal imager across the front and back of coating operation by operator or peripheral equipment, can not have the surface temperature in the region (if door-plate for example, for its position, top etc.) of direct relation to be that benchmark is calculated actual temperature with coating presumptive areas in applied parts and wax poor yet.In addition, if the region separated with coating presumptive area, owing to inferring that the temperature variation in the coating operation process that heat transmission causes is also very little, or be negligible size, therefore be not limited to be coated with before operation, with regard to the surface temperature in this region of obtaining in operation process in coating at last, also can as the poor benchmark of calculating of actual temperature, use no problemly.
In addition, the coating scope evaluation method of the wax that the 2nd side of the present invention is related can be also, in lower limit allowable value is set operation, also add after the coating of wax, follow the poor lower limit allowable value of the low lower design temperature of temperature of dispensing area of the process of set time.
In the region that has been coated with wax, due to the heat transmission from wax, temperature rises, but after the set time, there will be peripherad heat to transmit (thermal diffusion) amount and exceed the state of affairs from the amount of heat transfer of wax.For this reason, when the poor lower limit allowable value of said temperature being set as to more than necessity big or small, even be suitably coated with the region of wax, also likely can be decided to be uncoated area by starting the region erroneous judgement that temperature reduces.About this point, as described above, by being further added in after the coating of wax, follow the temperature of the dispensing area that the process of set time (from coating starts until take the time starting) produces to reduce the lower limit allowable value of coming design temperature poor, can prevent above-mentioned not good situation (misinterpretation), carry out the evaluation of more accurate coating scope.
In addition, the coating scope evaluation method of the wax that the 2nd side of the present invention is related can be also, also possess: theoretical formula derives operation, the coating condition of the wax based on for applied parts is carried out the temperature difference of the back temperature of induced representation dispensing area and the surface temperature of uncoated area, theoretical formula with the relation of the coating film thickness of wax, in lower limit allowable value, set in operation, based on theoretical formula, calculate the theoretical value of the lower limit allowable value of the temperature difference corresponding with the lower limit allowable value of coating film thickness, the temperature that adds the uncoated area that the heat transmission from the dispensing area of wax to uncoated area causes in this theoretical value rises, calculate the lower limit allowable value of temperature difference.
The object of coating wax is the antirust of applied parts, and the lower limit of the coating film thickness that therefore can allow is determined by specification etc.About this point, due to the theoretical formula based on representing the relation of the dispensing area of wax and the temperature difference of uncoated area and coating film thickness, ask for the theoretical value of the poor lower limit allowable value of said temperature, therefore, the temperature of the uncoated area causing by the heat transmission adding in this theoretical value from dispensing area rises, calculate the poor lower limit allowable value of said temperature, can more correctly evaluate the scope of suitable coating wax.
In addition, the coating scope evaluation method of the wax that the 2nd side of the present invention is related can be also, in the monitor that position that can vision identification the coating operator of wax sets, only show with infrared thermal imager take and the actual temperature that obtains poor be region more than the lower limit allowable value of temperature difference.
If as described above, can only show in monitor that reality has suitably been coated with the scope of wax.Thus, the coating operator of wax can not only correctly grasp the region of uncoated wax, can also after just confirming with monitor, carry out the recoat of wax.Thus, can within the very short time, comprise the coating operation of the wax of recoat.
In addition, the solution of the problem of described the 3rd technology is reached by the related coating check system in the 3rd side of the present invention.That is, this check system, for checking being applied to the coating state of the coating thing of applied parts, is characterised in that to possess: infrared thermal imager, and it takes at least dispensing area in applied parts; And display part, it is equipped on the position of coating operator energy vision identification, the Temperature Distribution of the dispensing area that the shooting of demonstration by infrared thermal imager obtains, display part can show: the Temperature Distribution that shows continuously dispensing area in time through and the still image of the given time of the dynamic image that changes and dynamic image.
So, in the present invention, due to can vision coating operator the scope of identification set the display part of the Temperature Distribution of the dispensing area that shows that the shooting by infrared thermal imager obtains, be therefore coated with operator self and can confirm that coating state carries out the whether good relevant inspection to this coating operation.In addition, now, by being shown, display part shows continuously the Temperature Distribution dynamic image that process changes in time of dispensing area, while coating operator can see in operation process that the Temperature Distribution of applied parts is coated with operation.Therefore, can be coated with swimmingly operation.In addition, in the present invention, owing to showing at above-mentioned display part the still image in the given moment of dynamic image, therefore can with stationary state confirm to be for example coated with the end time point of operation still image, be coated with the Temperature Distribution of the dispensing area after operation has just completed.If the Temperature Distribution of stationary state, due to than seeing dynamic image that its state changes constantly judge coating state well whether, can check more in detail and correctly, therefore can be rapidly and be correctly determined with without holiday, for the region that needs recoat, coating operator self also can grasp rapidly and correctly.Certainly, by the still image of the stylish demonstration of the end whenever recoat operation end time point, can also detailed inspection recoat well whether judge.Thereby, not only for initial coating operation, and also can carry out rapidly and correctly for the inspection of recoat operation.
In addition, the related coating check system in the 3rd side of the present invention can be also that display part can show dynamic image and still image simultaneously.
So, by make 1 display can show dynamic image and the still image about the Temperature Distribution of dispensing area simultaneously, at display part, shown after the still image that dynamic image carves at a time, the Temperature Distribution after being presented at continuously while obtaining this still image by dynamic image in time through and the variation that occurs.Thus, for example, based on still image, determining whether and needing after recoat, while the dynamic image of the result midway of the recoat operation after seeing this still image and reflecting is relatively coated with operation.Thereby on one side on one side real-time confirmation has finished the region of recoat and also needed the region of recoat to be coated with operation, energy is smooth and easy and promptly carry out recoat operation.
In addition, the related coating check system in the 3rd side of the present invention can be still to possess: show instruction unit, it indicates still image to the demonstration of display part by operation; With conveying instruction unit, it indicates supply unit to carry out the conveying of applied parts by operation.
By formation like this, by coating operator operation after finishing coating operation, show instruction unit, thereby make display part show that Temperature Distribution after coating operation completes is as still image.Then, coating operator self judge coating operation well whether, in the situation that being judged as no problem (there is no holiday), by operation, carries instruction unit, can be such as being transmitted applied component feed that band etc. supports to subsequent processing.On the other hand, in the situation that coating operator judges that according to still image the whether good result of coating operation is to be judged as problem (having holiday), can inoperation carry instruction unit ground to carry out recoat operation.Thereby judgement that can be based on coating operator, does not have holiday ground, the time point under the state that can be transported to subsequent processing is carried applied parts, can carry out rapidly and positively these a series of inspections and carry operation total applied parts.
In addition, in the situation that the related coating check system in the 3rd side of the present invention possesses above-mentioned demonstration instruction unit and carries instruction unit, carry the operation of instruction unit be only controlled as by show instruction unit operate in display part to show still image after effectively.
As described above, in the situation that considering recoat, it is effectively that formation as described above (show instruction unit and carry instruction unit) is equipped in the scope that coating operator's hand gets at, but in this case, worries to push the wrong the mistake causing and carry.About this point, by for example controlling as described above, show instruction unit and carry instruction unit, thereby in the situation that hypothesis pushes the wrong demonstration instruction unit and carries instruction unit, also can not carry applied parts.Thereby, can avoid applied parts to be coated with inspection and just flow into the state of affairs of subsequent processing, thereby can positively carry out exhaustive test.
Invention effect
As described above, according to the 1st related evaluation method in side of the present invention, can to the coating film thickness of wax, evaluate with easy gimmick totally.
In addition, as described above, according to the 2nd related evaluation method in side of the present invention, can to the coating scope of wax, evaluate at short notice totally.
In addition, as described above, according to the 3rd related check system in side of the present invention, coating operator can be correctly and is promptly grasped the check result of coating operation.In addition, the in the situation that of needs recoat, also can be rapidly and correctly carry out this recoat operation.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the coating film thickness evaluation method of the related wax of 1 embodiment of the 1st side of the present invention.
Fig. 2 means for implementing the stereographic map of an example of equipment of the coating film thickness evaluation method of wax.
Fig. 3 is the sectional view of pocket structure portion of door of the applied parts of conduct of the dispensing area that comprises wax.
Fig. 4 means the back temperature of dispensing area of wax and the chart of the relation of the temperature difference of surface temperature before coating and the coating film thickness of wax.
Fig. 5 A is the display case that evaluation result that the coating film thickness evaluation method by the related wax of 1 embodiment of the 1st side of the present invention obtains is presented at monitor.
Fig. 5 B is the display case that the evaluation result that obtains by the coating film thickness evaluation method identical with Fig. 5 A is presented at monitor.
Fig. 6 is the display case that evaluation result that the coating film thickness evaluation method by the related wax of other embodiment of the 1st side of the present invention obtains is presented at monitor.
Fig. 7 A is the display case that evaluation result that the coating film thickness evaluation method by the related wax of other embodiment of the 1st side of the present invention obtains is presented at monitor.
Fig. 7 B is the display case that the evaluation result that obtains by the coating film thickness evaluation method identical with Fig. 7 A is presented at monitor.
Fig. 8 is the process flow diagram of the coating scope evaluation method of the related wax of 1 embodiment of the 2nd side of the present invention.
Fig. 9 A is the front view of the display part of the related coating check system of 1 embodiment of the 3rd side of the present invention, the figure of the demonstration form of the display part while meaning coating operation.
Fig. 9 B is the front view of the display part of the coating check system identical with Fig. 9 A, means the figure of the demonstration form of the display part after the coating end of job.
Fig. 9 C is the front view of the display part of the coating check system identical with Fig. 9 A, means the figure of the demonstration form of the display part after coating inspection is finished.
Figure 10 means the vertical view that shows instruction unit and carry a configuration example of instruction unit.
Figure 11 is the process flow diagram of the inspection method of the related coating check system of 1 embodiment of use the 3rd side of the present invention.
Embodiment
1 embodiment of the coating film thickness evaluation method of the wax that the 1st side of the present invention is related is described based on accompanying drawing below.In the present embodiment, take the situation of evaluating the coating film thickness that is coated on the door of car body and the wax of the pocket structure portion of car bonnet describes as example.
Fig. 1 means the process flow diagram of the coating film thickness evaluation method of the wax that 1 embodiment of the 1st side of the present invention is related.As shown in Figure 1, this evaluation method possesses: temperature obtains operation S11, obtains the back temperature in the surface temperature of the applied parts before coating wax and the region of coating wax by take applied parts with infrared thermal imager; The poor operation S12 that calculates of actual temperature, calculates the back temperature of dispensing area and the actual temperature of the surface temperature before coating is poor; Theoretical formula derives operation S13, and the coating condition of the wax based on for applied parts is carried out the theoretical formula of the relation of the back temperature of induced representation dispensing area and the coating film thickness of the temperature difference between the surface temperature before coating and wax; Evaluate operation S14 with coating film thickness, use theoretical formula, according to the poor evaluation of carrying out the actual coating film thickness of wax of actual temperature.
In addition, in the present embodiment, also possess: lower limit allowable value is set operation S15, theoretical formula based on obtaining at theoretical formula derivation operation S13 is set the lower limit allowable value of the temperature difference corresponding with the lower limit allowable value of coating film thickness, also possess: evaluation result shows operation S16, the coating operator who is equipped on wax can vision only show in the monitor of position of identification with infrared thermal imager take and the actual temperature that obtains poor be region more than the lower limit allowable value of temperature difference, as evaluating in coating film thickness the evaluation result that operation S14 obtains.Below describe each operation in detail.
(temperature obtains operation S11)
First, by take applied parts with infrared thermal imager, obtain the back temperature of the surface temperature of the applied parts before coating wax and the dispensing area of coating wax the wax after the set time.Concrete describes, as shown in Figure 2, at the coating operation station 2 of the car body 1 as applied parts, arrange and a plurality ofly can take individually the infrared thermal imager 6 that becomes the side door 3 of the coating of wax object, back door 4 and car bonnet 5, and the monitor 7 of setting and infrared thermal imager 6 equal numbers.In the present embodiment, as shown in Figure 2, the position of the evaluation result of the coating film thickness of the coating object (side door 3 etc.) that can take in its job position vision identification the coating operator 8 who carries out the coating operation of wax and towards monitor 7 is set.
Then, when reality is moved into the given position (coating job position) of coating operation station 2 by car body 1, first, under the state of opening side door 3, back door 4 and car bonnet 5, with corresponding infrared thermal imager 6, take the surface of side door 3, back door 4 and car bonnet 5, measure the surface temperature T before coating wax p1.In the present embodiment, as shown in Figure 2, carry out the shooting of infrared thermal imager 6, the region (being the region 9 of actual coating wax at Fig. 5 A and Fig. 5 B) of the predetermined coating wax in the outside surface in outside of side door 3 grades is included in coverage, measures thus the temperature (distribution) of shooting area.
So, after surface temperature (distribution) before having measured coating wax, a plurality of coating operators 8 move to respectively and become before the side door 3 of taken on coating object, back door 4 and car bonnet 5, with the wax that hand-held coating gun 10 sprays antirust use to the pocket structure portion 11 of each coating object (side door 3, back door 4, car bonnet 5), are coated with.When act side door 3 is elaborated for example, as shown in Figure 3, the pocket structure portion 11 of side door 3 for example outside panel 12 and the coincidence part of wainscot 13 filled under the state of bonding agent 14, the circumference of outer panels 12 is turned back (implementing crimping processing) thus outer panels 12 and wainscot 13 is integrated, form thus.Then, operator 8 is by inserting coating gun 10 to be coated with from being located at the gap of the surrounding of pocket structure portion 11 in coating, is forming the inner face of outer panels 12 and the inner face of the wainscot 13 coating wax 15 of pocket structure portion 11 thus.
Then, after the coating end of job of wax 15, with infrared thermal imager 6, again take the back side of the dispensing area 9 (with reference to figure 5A etc.) of wax, measure the back temperature T of dispensing area 9 p2.In the present embodiment, because car body 1 and the relative position of infrared thermal imager 6 are fixed, therefore, identical with time before coating, make the dispensing area 9 of the wax in the outside surface in outside of side door 3 grades be included in coverage and carry out the shooting of infrared thermal imager 6 interiorly, measure thus the temperature (distribution) of shooting area.
(the poor operation S12 that calculates of actual temperature)
Next, calculate the back temperature T of the dispensing area 9 of obtaining in temperature measuring operation S11 p2, with coating before surface temperature T p1the poor T of actual temperature r.Conventionally, because making the applied surface temperature of applied parts (side door 3 etc.), the coating by wax 15 rises, so the poor T of actual temperature rby following formula, characterize.
Formula 1:T r=T p2one T p1
(theoretical formula derives operation S13)
In addition, at the lower limit allowable value T that sets temperature difference described later ltime, first, in the present embodiment, the coating condition of the wax 15 based on for side door 3 grades, carrys out the back temperature T of induced representation dispensing area 9 p2with the surface temperature T before coating p1between temperature difference T and the coating film thickness t of wax 15 wAXthe theoretical formula of relation.At this, induced representation supposition is only in the situation that the poor T of said temperature and the coating film thickness t that carry out heat interchange (heat of wax 15 is all delivered to steel plate) between be coated with wax 15 and the formation steel plate as the side door 3 of applied parts etc. wAXthe theoretical formula of relation.At this, make the needed heat C of amount of the poor T of outer panels 12 rising said temperature p, by following formula 2, characterize.
Formula 2:C p=c p* M p* T
Wherein, c pthe specific heat that represents outer panels, M pthe quality of the outer panels in the dispensing area 9 of expression wax.
In addition, in this case, the heat C that the wax 15 being coated with loses wAXby following formula 3, characterize.
Formula 3:C wAX=c wAX* M wAX* { T wAXone (T m+ T) }
Wherein, c wAXthe specific heat that represents wax, M wAXthe quality of the wax that expression is coated with, T wAXthe temperature that represents the wax after just coating.
In addition, the mass M of outer panels p, wax mass M wAXuse respectively
Formula 4:M p=A * t p* ρ P
Formula 5:M wAX=A * t wAX* ρ wAX
Characterize.Wherein, A represents the spreading area of wax, t pthe thickness of slab that represents outer panels, t wAXthe coating film thickness that represents wax, ρ pthe density that represents outer panels, ρ wAXthe density that represents wax.
Then, in formula 1 and formula 2, exist, be made as C p=C wAXsituation under, the coating film thickness t of wax wAXas the function of temperature difference T and be characterized by
Formula 6:t wAX={ C p* t p* ρ p* T}/[c wAX* ρ wAX* { T wAXone (T p1+ T) }].
In addition, if will derive more closely temperature difference T and coating film thickness t wAXtheoretical formula, also can be such as also considering that being diffused into airborne heat etc. from wax 15 constructs thermal balance type, but this, as long as owing to guaranteeing coating film thickness t as described above wAXlower limit allowable value, therefore adopt the theoretical formula that can derive under more easy condition.In addition, if as described later, actual temperature difference (the poor T of actual temperature r) be greater than the lower limit allowable value of the temperature difference deriving in the situation that being made as not to airborne thermal diffusion, due to the coating film thickness t of actual wax 15 wAXthe value more strengthening is shown, therefore no problem aspect quality guarantee.
(lower limit allowable value is set operation S15)
So try to achieve temperature difference T and coating film thickness t wAXtheoretical formula after, based on this theoretical formula, calculate the lower limit allowable value t with coating film thickness lthe lower limit allowable value T of corresponding temperature difference ltheoretical value, in this theoretical value, add that from the dispensing area 9 of wax to uncoated area 16 temperature of the uncoated area 16 that the heat transmission of (with reference to figure 5A etc.) causes rises, the lower limit allowable value T that calculates temperature difference l.Fig. 4 means temperature difference T and coating film thickness t wAXthe chart of relation, in Fig. 4, the curve shown in a dot-and-dash line means temperature difference T and coating film thickness t wAXthe theoretical formula of relation, Plotted line is practical measurement temperature difference T and coating film thickness t wAXand the value obtaining.In addition, can use for example routine wet film to measure the coating film thickness that device (Wet gauge) is measured actual wax.According to this figure, prove to use to represent temperature difference T and coating film thickness t wAXthe theoretical formula of relation, can be according to the measured value of temperature difference (the poor T of actual temperature r) evaluate the appropriate property of the coating scope of wax 15.Therefore, for example according to the theoretical formula shown in formula 6, calculate the lower limit allowable value t with coating film thickness as standard value lthe lower limit allowable value T of corresponding temperature difference ltheoretical value, in this theoretical value, add that the temperature of the uncoated area 16 causing to the heat transmission to uncoated area 16 from the dispensing area 9 of wax rises, the lower limit allowable value T that calculates thus temperature difference l.In addition, in the present embodiment, further consider after the coating of wax 15, follow the process of set time (the in this case coating activity duration of wax 15) and the temperature reducing amount of the dispensing area 9 that produces is carried out the poor lower limit allowable value T of design temperature l.
In addition, the calculation method of the temperature ascending amount of the uncoated area 16 that the heat transmission from the dispensing area 9 of wax to uncoated area 16 causes is not particularly limited, wax 15 that for example can be based on reality coating and become heat and transmit the associated physics value of heat transmission of the steel plate of medium and calculate, also can actual wax 15 be coated on to outer panels 12 and carry out temperature measuring, by such trial and error, ask for.Or, also can obtain the relevant of dispensing area and coating weight and temperature ascending amount, the relevant temperature ascending amount of calculating of obtaining based on this.After the coating of wax 15, follow the process of set time and the calculation method of the temperature reducing amount of the dispensing area 9 that produces too.
(coating film thickness is evaluated operation S14)
So calculating the lower limit allowable value T of temperature difference lafter, the poor T of actual temperature based on trying to achieve before r, and the lower limit allowable value T of the temperature difference of just having tried to achieve above l, evaluate the coating film thickness of wax 15.Particularly, to the poor T of actual temperature rlower limit allowable value T for temperature difference l, above region, being judged to be is the region that reality has been coated with the wax 15 with needed coating film thickness.On the other hand, to the poor T of actual temperature rthe lower limit allowable value T of not enough temperature difference lregion, being judged to be is uncoated wax 15, even if or be coated with and also do not have the region of enough coating film thickness.
(evaluation result shows operation S16)
The monitor 7 of position (with reference to figure 2) that then, can vision identification the coating operator 8 who is equipped on wax 15 only shows with infrared thermal imager 6 to be taken and the poor T of actual temperature that obtains rlower limit allowable value T for temperature difference labove region, as evaluating in coating film thickness the evaluation result that operation S14 obtains.Thus, monitor 7 only shows that reality has suitably been coated with the scope of wax 15.Therefore, in the situation that coating operator 8 sees the displaying contents of this monitor 7, being judged as the original Zone Full that should be coated with as shown in Fig. 5 A or Fig. 5 B has been shown, think fit and be coated with wax 15 and finished this coating operation, car body 1 is transported to subsequent processing.In addition, although omitted diagram, in the situation that the part in the region that originally should be coated with is seen the position not showing, the relevant coating operator 8 who has carried out confirming is directly coated with wax 15 with coating gun 10 at corresponding position again.In addition, thinking need in the situation that, also can again with infrared thermal imager 6, after coating finishes, measure the back temperature of dispensing area 9, below repeatedly carry out above-mentioned S12～S16 operation be coated with the revaluation of scope.
So, in the present invention, due to the surface temperature T of side door 3 grades based on before coating wax 15 p1, with the back temperature T of the dispensing area of coating wax 15 wax through the set time (in this case starting till the time finishing from the coating operation of wax) p2the poor T of actual temperature revaluate coating film thickness t wAX, therefore can evaluate with each temperature measuring (shooting) operation of 1 time before and after the coating of wax 15 the coating scope of wax 15.Thus, compare with the evaluation gimmick of the existing infrared thermal imager that need to need to continue continuously after just coating to take, can shorten the needed time of temperature measuring operation.In addition, due to can be with coating the surface temperature T of side door 3 grades before wax 15 p1for benchmark is evaluated the coating film thickness t of wax wAX, therefore can not be subject to each applied parts temperature deviation impact obtain the evaluation result of stable coating scope.In addition, owing to needing only the surface temperature T that measures side door 3 grades before coating wax 15 p1, and coating the back temperature T of the dispensing area after the set time 9 p2just enough, therefore measure operation self and can under the prerequisite of not destroying, implement, and complete at short notice.For this reason, can under the prerequisite that does not increase the special activity duration, carry out coating film thickness t wAXtotal evaluation, can seek the lifting of further quality guarantee function.
In addition, in the present invention, setting the poor lower limit allowable value T of said temperature ltime, not only consider that the temperature of the dispensing area 9 that the coating of wax 15 causes rises, the temperature of also considering the uncoated area 16 that the heat transmission from the dispensing area 9 of wax to uncoated area 16 causes rises and carrys out the poor lower limit allowable value T of design temperature l.At this, in the temperature of for example not considering the uncoated area 16 that above-mentioned heat transmission causes, rise and set the poor lower limit allowable value T of said temperature according to theoretical formula l, situation under, its value is less than the situation of having considered that the temperature of uncoated area 16 rises.For this reason, if for example just taking after coating, can obtain well having reflected that the monitor 7 of actual dispensing area 9 shows result, for example, after the set time (the coating activity duration of wax 15), as the example shown in figure 6, the unactual position being coated with also in the painted demonstration of monitor 7 (in addition, in GTG in Fig. 6, approach white and characterize more high temperature, more approach black and characterize more low temperature, at Fig. 5 A and Fig. 5 B, Fig. 7 A and Fig. 7 B too), can not show correct coating scope.On the other hand, as the present invention, the temperature of the uncoated area 16 that the heat transmission from dispensing area 9 causes if add rises and carrys out the poor lower limit allowable value T of design temperature l, can avoid judging the region that is not suitably coated with wax 15 by accident be decided to be dispensing area the state of affairs.In addition, coating operation at wax 15 is spun out than predetermined, or complete in shorter time in the situation that, due to the elapsed time change that starts to play from coating till shooting, therefore there is deviation (with reference to figure 5A and Fig. 5 B) in the actual Temperature Distribution obtaining, owing to having added as described above the temperature causing to the heat transmission of uncoated area 16 to rise to evaluate, therefore in viewing area, do not have large difference.Thereby, if this evaluation method can make the time that starts to play till temperature measuring operation from coating have elasticity to a certain degree, can evaluate accurately the coating scope of wax 15.In addition, can improve the reliability with respect to evaluation result.
So in being coated with the region 9 of wax 15, temperature rises due to the heat transmission from wax 15, but after the set time, can there is peripherad heat transmission (thermal diffusion) amount and exceed the state of affairs from the amount of heat transfer of wax 15.For this reason, by the poor lower limit allowable value T of said temperature lbe set to need above when big or small, for example as shown in Figure 7 A, so long as from coating start after preset time, just can correctly evaluate the coating scope of wax 15, but after the further time, in a part of temperature of dispensing area 9, start to reduce, likely can be as shown in Figure 7 B, although be that the region that has suitably been coated with wax 15 is not displayed on monitor 7 (being judged to be uncoated area 16) yet.About this point, by add as above-mentioned after the coating of wax 15, follow the set time (from coating start to play take start till the time) the temperature of the dispensing area that produces of process reduce the lower limit allowable value T that comes design temperature poor l, as shown in Figure 5 B, though after coating operation has just finished further after the regular hour, also can obtain roughly the same demonstration result (indication range).
Certainly, the coating film thickness evaluation method of the related wax in the 1st side of the present invention can adopt arbitrarily and form not departing within the scope of purport of the present invention.For example, in the above-described embodiment, exemplified with obtain operation S11 in temperature, obtain the surface temperature T that is coated with side door 3 grades before wax 15 p1as uncoated area, comprise the surface temperature T in the region of the uncoated wax 15 that is coated with presumptive area p1situation, certainly, can also obtain the surface temperature T of the uncoated area 16 except coating presumptive area p1surface temperature T as the region of uncoated wax 15 p1.In this case, by taking such as the region of leaving a little from dispensing area 9 in the applied parts of side door 3 grades with infrared thermal imager 6, can obtain the surface temperature T in this region p1.In addition, the region very little due to the temperature variation that the coating of wax 15 is caused is made as uncoated area, therefore, no matter how it obtains timing, so long as take to obtain in being for example coated with operation process.
In addition, in the above-described embodiment, obtain respectively the surface temperature T in the region of the uncoated wax 15 in applied parts (side door 3 etc.) for 1 time 1 time p1, and the back temperature T of the dispensing area 9 of coating wax 15 wax after the set time p2, the poor T of actual temperature based on now revaluate coating film thickness t wAX, but be certainly not limited to this form.For example, with infrared thermal imager 6, take heat pictures (temperature distribution image) continuously also can just having started from the coating of wax 15, and captured heat picture is carried out successively for evaluating above-mentioned coating film thickness T wAXcalculation process (the poor T of actual temperature when image is obtained rwith lower limit allowable value T l, comparison), at monitor 7, show continuously its result.That is, from starting, the coating operation of wax 15 repeatedly implements operation (the poor T of actual temperature particularly constantly changing till above-mentioned operation S11～S16 rtemperature Distribution obtain and with lower limit allowable value T lcomparison), at monitor 7, show its evaluation results.Thus, follow the progress of the coating operation of the wax 15 that operator carries out, from being coated with the region of wax 15 of suitable thickness, be displayed on successively monitor 7.In this case, as the surface temperature T of uncoated area p1, be that any one of surface temperature of the surface temperature of coating before wax 15 and the region except the coating presumptive area of wax 15 (uncoated area 16) all can be (in the latter case, for obtained surface temperature T p1, also the heat picture based on up-to-date or the heat picture just obtained before upgrade successively), in addition, by the poor T of actual temperature based on so obtaining successively rthe evaluation result of the coating film thickness of carrying out is presented at monitor 7 continuously.
In addition, in the above description, exemplified with to be evaluated as the situation of prerequisite totally, but the coating film thickness evaluation method of the wax that the 1st side of the present invention is related can certainly for example, be evaluated in the ratio of many (3) being evaluated to 1, or with every preset time (for example 1 hour) ratio of 1 time evaluate.
1 embodiment of the coating scope evaluation method of the wax that the 2nd side of the present invention is related is described based on accompanying drawing below.The situation of in the present embodiment, getting the coating scope of evaluating the wax be coated on the door of car body and the pocket structure portion of car bonnet is that example describes.
Fig. 8 represents the process flow diagram of the coating scope evaluation method of the wax that 1 embodiment of the 2nd side of the present invention is related.As shown in Figure 8, this evaluation method possesses: temperature obtains operation S21, obtains the back temperature of the surface temperature of the applied parts before coating wax and the dispensing area of coating wax the wax after the set time by take applied parts with infrared thermal imager; The poor operation S22 that calculates of actual temperature, calculates the back temperature of dispensing area and the actual temperature of the surface temperature before coating is poor; Lower limit allowable value is set operation S23, consider that temperature that the direct coating of wax causes rises and back temperature that the temperature of the uncoated area that the heat transmission from the dispensing area of wax to uncoated area causes rises to set dispensing area and coating the lower limit allowable value of temperature difference of surface temperature; Evaluate operation S24 with coating scope, lower limit allowable value poor based on actual temperature and temperature difference is evaluated the coating scope of wax.
In addition, in the present embodiment, before setting operation S23, lower limit allowable value also possesses: theoretical formula derives operation S25, the coating condition of the wax based on for applied parts is come the back temperature of induced representation dispensing area and the temperature difference between the surface temperature before coating, theoretical formula with the relation of the coating film thickness of wax, also possess: evaluation result shows operation S26, the coating operator who is equipped on wax can vision the monitor of position of identification only show with infrared thermal imager take and the actual temperature that obtains poor be region more than the lower limit allowable value of temperature difference, as evaluating in coating scope the evaluation result that operation S24 obtains.Below describe each operation in detail.
(temperature obtains operation S21)
First, by take applied parts with infrared thermal imager, obtain the back temperature of the surface temperature of the applied parts before coating wax and the dispensing area of coating wax the wax after the set time.Describe particularly, as shown in Figure 2, at the coating operation station 2 of the car body 1 as applied parts, arrange and a plurality ofly can take individually the infrared thermal imager 6 that becomes the side door 3 of the coating of wax object, back door 4 and car bonnet 5, and the monitor 7 of setting and infrared thermal imager 6 equal numbers.In the present embodiment, as shown in Figure 2, carry out the coating operator 8 of the coating operation of wax, at its job position, can vision the coating object (side door 3 etc.) taken on of identification coating scope evaluation result position and towards monitor 7 is set.
Then, when reality is moved into the given position (coating job position) of coating operation station 2 by car body 1, first, under the state that side door 3, back door 4 and car bonnet 5 are opened, with corresponding infrared thermal imager 6, take the surface of side door 3, back door 4 and car bonnet 5, measure the surface temperature T before coating wax p1.In the present embodiment, as shown in Figure 2, with infrared thermal imager 6, take, the region (being the region 9 of actual coating wax at Fig. 5 A and Fig. 5 B) of the predetermined coating wax in the outside surface in outside of side door 3 grades is included in coverage, measures thus the temperature (distribution) of shooting area.
So, after surface temperature (distribution) before measuring coating wax, a plurality of coating operators 8 move to respectively and become before the side door 3 of taken on coating object, back door 4 and car bonnet 5, with the wax that hand-held coating gun 10 sprays antirust use to the pocket structure portion 11 of each coating object (side door 3, back door 4, car bonnet 5), are coated with.When enumerating side door 3 and be elaborated for example, as shown in Figure 3, the pocket structure portion 11 of side door 3 for example outside panel 12 and the coincidence part of wainscot 13 filled the outer panels 12 of turning back under the state of bonding agent 14 circumference (implementing crimping processing) thus by outer panels 12 with wainscot 13 is integrated forms.Then, coating operator 8 is coated with from being located at the gap insertion coating gun 10 of the surrounding of pocket structure portion 11, is forming the inner face of outer panels 12 and the inner face of the wainscot 13 coating wax 15 of pocket structure portion 11 thus.
Then, after the coating end of job of wax 15, with infrared thermal imager 6, again take the back side of the dispensing area 9 (with reference to figure 5A etc.) of wax, measure the back temperature T of dispensing area 9 p2.In the present embodiment, because car body 1 and the relative position of infrared thermal imager 6 are fixed, therefore identical with time before coating, with infrared thermal imager 6, take, the dispensing area 9 of the wax in the outside surface in outside of side door 3 grades is included in coverage, measures thus the temperature (distribution) of shooting area.
(the poor operation S22 that calculates of actual temperature)
Next, the formula based on having narrated 1 is calculated the back temperature T of the dispensing area 9 of obtaining at temperature measuring operation S21 p2with the surface temperature T before coating p1the poor T of actual temperature r.As calculation method, for example, can enumerate the method for the formula 1 based on having narrated.
(theoretical formula derives operation S25)
In addition, at the lower limit allowable value T that sets temperature difference described later ltime, the first coating condition of the wax 15 based on for side door 3 grades is in the present embodiment carried out the back temperature T of induced representation dispensing area 9 p2with the surface temperature T before coating p1between temperature difference T and the coating film thickness t of wax 15 wAXthe theoretical formula of relation.At this, only derive supposition in the situation that the poor T of expression said temperature and the coating film thickness t that carries out heat interchange (heat of wax 15 all passes to steel plate) between be coated with wax 15 and the formation steel plate as the side door 3 of applied parts etc. wAXthe theoretical formula (example is formula 2～formula 6 as has been described) of relation.Thus, can be by the coating film thickness t of wax wAXbe shown as the function of temperature difference T.
In addition, if will derive more closely temperature difference T and coating film thickness t wAXtheoretical formula, can be such as also considering that being diffused into airborne heat etc. from wax 15 constructs thermal balance type, at this, as long as owing to guaranteeing coating film thickness t as described above wAXlower limit allowable value, therefore adopt the theoretical formula that can derive under more easy condition.In addition, if actual temperature difference (the poor T of actual temperature as described later r) be not greater than not to the lower limit allowable value T of the temperature difference deriving in the situation of diffusion heat in air l, due to the coating film thickness t of actual wax 15 wAXfurther large value is shown, therefore no problem aspect quality guarantee.
(lower limit allowable value is set operation S23)
So, try to achieve temperature difference T and coating film thickness t wAXtheoretical formula after, based on this theoretical formula, calculate the lower limit allowable value t with coating film thickness lthe lower limit allowable value T of corresponding temperature difference ltheoretical value (with reference to figure 4), in this theoretical value, add the lower limit allowable value T that the temperature of the uncoated area 16 that the heat transmission from the dispensing area 9 of wax to uncoated area 16 (with reference to figure 5A etc.) causes rises to calculate temperature difference l.At this, as shown in Figure 4, owing to having confirmed to use expression temperature difference T and coating film thickness t wAXthe theoretical formula of relation, can be according to the measured value of temperature difference (the poor T of actual temperature r) evaluate the appropriate property of the coating scope of wax 15, therefore, according to the theoretical formula shown in formula 6, for example calculate the lower limit allowable value t with coating film thickness as standard value l, the lower limit allowable value T of corresponding temperature difference ltheoretical value, in this theoretical value, add that the temperature of the uncoated area 16 that the heat transmission from the dispensing area 9 of wax to uncoated area 16 causes rises, the lower limit allowable value T that calculates temperature difference l.In addition, in the present embodiment, further consider after the coating of wax 15, follow the process of set time (being the coating activity duration of wax 15 at this) and the temperature reducing amount of the dispensing area 9 that produces is carried out the poor lower limit allowable value T of design temperature l.
In addition, there is no particular limitation for the calculation method of the temperature ascending amount of the uncoated area 16 that the heat transmission from the dispensing area 9 of above-mentioned wax to uncoated area 16 causes, wax 15 that for example can be based on reality coating, become heat and transmit the associated physics value of heat transmission of the steel plate of medium and calculate, or also can wax 15 be coated on to outer panels 12 in reality and carry out temperature measuring, by such trial and error, ask for.Or, also can obtain the relevant of dispensing area and coating weight and temperature ascending amount, the relevant temperature ascending amount of calculating of obtaining based on this.The calculation method of the temperature reducing amount of the dispensing area 9 of following the process of set time after the coating about wax 15 and producing is also identical.
(coating scope is evaluated operation S24)
So, calculating the lower limit allowable value T of temperature difference lafter, the poor T of actual temperature based on previously having tried to achieve r, and the lower limit allowable value T of the temperature difference of just having tried to achieve above levaluate the coating scope of wax 15.Particularly, for the poor T of actual temperature rlower limit allowable value T for temperature difference l, above region, is judged to be the region that reality has been coated with the wax 15 with needed coating film thickness.On the other hand, for the poor T of actual temperature rthe lower limit allowable value T of not enough temperature difference lregion, even if be judged to be uncoated wax 15 or be coated with, do not there is the region of sufficient coating film thickness yet.
(evaluation result shows operation S26)
The monitor 7 of position (with reference to figure 2) that then, can vision identifications the coating operator 8 who is equipped on wax 15 only shows the poor T of actual temperature obtaining with infrared thermal imager 6 shootings rlower limit allowable value T for temperature difference labove region, as evaluating in coating scope the evaluation result that operation S24 obtains.Thus, at monitor 7, only show that reality has suitably been coated with the scope of wax 15.Therefore, in the situation that coating operator 8 sees the displaying contents of this monitor 7, as shown in for example Fig. 5 A or Fig. 5 B, be judged as and shown the Zone Full that originally will be coated with, think fit and be coated with wax 15 and finished this coating operation, car body 1 is transported to subsequent processing.In addition, though the diagram of omission, in the situation that of the region that originally will be coated with sees the position not showing, the corresponding coating operator 8 who has carried out confirming is directly coated with wax 15 with coating gun 10 at corresponding position again.In addition, thinking need in the situation that, also can again with infrared thermal imager 6, after coating finishes, measure the back temperature of dispensing area 9, below repeatedly carry out the operation of above-mentioned S22～S26, be coated with thus the revaluation of scope.
So, in the present invention, due to the surface temperature T of side door 3 grades based on before coating wax 15 p1, with the back temperature T of the dispensing area of coating wax 15 wax through the set time (in this case starting till the time finishing from the coating operation of wax) p2the poor T of actual temperature revaluate coating film thickness t wAX, therefore, can be evaluated by temperature measuring (shooting) operation of 1 time 1 time before and after wax 15 coatings the coating scope of wax 15.Thus, the evaluation gimmick than the existing infrared thermal imager that need to continue continuously to take from firm coating, can shorten the needed time of temperature measuring operation.In addition, due to can be with coating the surface temperature T of side door 3 grades before wax 15 p1for benchmark is evaluated the coating film thickness t of wax wAX, therefore can not be subject to each applied parts temperature deviation impact obtain the evaluation result of stable coating scope.In addition, owing to needing only the surface temperature T that can measure side door 3 grades before coating wax 15 p1, and be coated with and the back temperature T of the dispensing area after the set time 9 p2just enough, therefore measure operation self and can under the prerequisite of not destroying, implement, and can be complete at short notice.Thus, can not cause the special activity duration increase carry out coating film thickness t wAXtotal evaluation, can seek the lifting of further quality guarantee function.
In addition, in the present invention, setting the poor lower limit allowable value T of said temperature ltime, not only consider that the temperature of the dispensing area 9 that the coating of wax 15 causes rises, the temperature of also considering the uncoated area 16 that the heat transmission from the dispensing area 9 of wax to uncoated area 16 causes rises and carrys out the poor lower limit allowable value T of design temperature l.At this, in the temperature of not considering the uncoated area 16 that for example above-mentioned heat transmission causes, rise and set the poor lower limit allowable value T of said temperature according to theoretical formula l, situation under, its value is less than the situation of having considered that the temperature of uncoated area 16 rises.For this reason, if for example just taking after coating, can obtain well having reflected that the monitor of actual dispensing area 9 shows result, but for example, after the set time (wax coating activity duration), as the example shown in figure 6, actual uncoated position also can, in the painted demonstration of monitor, can not show correct coating scope.On the other hand, as the present invention, the temperature of the uncoated area 16 that the heat transmission from dispensing area 9 causes if add rises and carrys out the poor lower limit allowable value T of design temperature l, can avoid judging the region that is not suitably coated with wax 15 by accident be decided to be dispensing area the state of affairs.In addition, coating operation at wax 15 is elongated than predetermined, or in situation about completing at short notice, due to the elapsed time change that starts to play from coating till shooting, therefore the actual Temperature Distribution obtaining has deviation (with reference to figure 5A and Fig. 5 B), owing to adding as described above the temperature causing to the heat transmission of uncoated area 16 to rise to evaluate, therefore in viewing area, do not have large difference.Therefore,, if this evaluation method can make the time that starts to play till temperature measuring operation from coating have elasticity to a certain degree, can evaluate accurately the coating scope of wax 15.In addition, can improve the reliability with respect to evaluation result.
So, in the region 9 that has been coated with wax, because the heat transmission from wax 15 causes temperature, rise, but after the set time, peripherad heat can occur and transmit (thermal diffusion) amount over the state of affairs of the amount of heat transfer from wax 15.For this reason, by the poor lower limit allowable value T of said temperature lwhile setting more than necessary degree big or small for, for example as shown in Figure 7 A, so long as from coating start through after preset time, just can correctly evaluate the coating scope of wax 15, yet, after the further time, in a part of temperature of dispensing area 9, start to reduce, likely can be as shown in Figure 7 B, although be the region also shown (being judged to be uncoated area 16) that has suitably been coated with wax 15.About this point, by further adding the poor lower limit allowable value T of the low design temperature that gets off of temperature of the dispensing area that the above-mentioned process of following like that the set time (starting to play the time of taking till starting from coating) after the coating of wax 15 produces l, can be as shown in Figure 5 B, though after coating operation has just finished further after regular time, also can obtain roughly the same demonstration result (indication range).
Certainly, the coating scope evaluation method of the related wax in the 2nd side of the present invention can adopt arbitrarily and form in the scope that does not depart from purport of the present invention.For example, in the above-described embodiment, exemplified with obtain the surface temperature T that obtains side door 3 grades before coating wax 15 in operation S21 in temperature p1as uncoated area, comprise the surface temperature T in the region of the uncoated wax 15 that is coated with presumptive area p1situation, certainly, can also obtain the surface temperature T of the uncoated area 16 except coating presumptive area p1surface temperature T as the region of uncoated wax 15 p1.In this case, such as by taking such as the region of leaving from dispensing area 9 in the applied parts of side door 3 grades with infrared thermal imager 6, can obtain the surface temperature T in this region p1.In addition, the region very little due to the temperature variation that the coating of wax 15 is caused is made as uncoated area, therefore no matter how it obtains timing, and can be by for example taking to obtain in coating operation.
In addition, in the above-described embodiment, obtain respectively the surface temperature T in the region of the uncoated wax 15 in applied parts (side door 3 etc.) for 1 time 1 time p1, and the back temperature T of the dispensing area 9 of coating wax 15 wax after the set time p2, the poor TR of actual temperature based on now evaluates coating scope, but is certainly not limited to this form.For example, also can from wax 15 just start coating with infrared thermal imager 6, take heat pictures (temperature distribution image) continuously, and captured heat picture is carried out to calculation process (the poor T of actual temperature when image is obtained for the evaluation of above-mentioned coating scope successively rwith lower limit allowable value T lcomparison), at monitor 7, show continuously its result.That is, repeatedly implement operation (the poor T of actual temperature particularly constantly changing till above-mentioned operation S21～S26 also can starting from the coating operation of wax 15 rthe obtaining and lower limit allowable value T of Temperature Distribution lcomparison), at monitor 7, show its evaluation results.Thus, follow the progress of the coating operation of the wax 15 that operator carries out, and from the region of suitable coating wax 15, be presented at successively monitor 7.In this case, as the surface temperature T of uncoated area p1, can be that any one in the surface temperature of the surface temperature of coating before wax 15 and the region except the coating presumptive area of wax 15 (uncoated area 16) is (in the latter case, for the surface temperature T obtaining p1, also the heat picture based on just having obtained before up-to-date heat picture upgrades successively), in addition, by the poor T of actual temperature based on so obtaining successively rthe evaluation result of coating film thickness be presented at continuously monitor 7.
In addition, in the above description, exemplified with to be evaluated as the situation of prerequisite totally, but the coating scope evaluation method of the wax that the 2nd side of the present invention is related can certainly for example, be evaluated in the ratio of every many (3) being evaluated to 1, or with every preset time (for example 1 hour) ratio of 1 time evaluate.
1 embodiment of the coating check system that the 3rd side of the present invention is related is described based on accompanying drawing below.
The coating check system that present embodiment is related, as shown in Figure 2, the coating operation station 2 at the car body 1 as applied parts, mainly possesses: infrared thermal imager 6, its indivedual side door 3, back door 4 and car bonnets 5 that become coating object of taking; With the monitor 7 as display part, its be equipped on position that coating operator 8 can vision identifications and towards, the Temperature Distribution of the dispensing area that demonstration is obtained by the shooting of infrared thermal imager 6, monitor 7 can show dynamic image 17 that said temperature distributes and still image 18 (all with reference to Fig. 9 A described later etc.).
In the present embodiment, a plurality of coating operators 8 move to respectively and become before the side door 3 of taken on coating object, back door 4 and car bonnet 5, with the wax that hand-held coating gun 10 sprays antirust use towards the pocket structure portion 11 of each applied parts (side door 3, back door 4, car bonnet 5), be coated with, use above-mentioned check system to check the coating state in this situation.At this, when enumerating side door 3, for example, this coating operation detailed be described, as shown in Figure 3, thereby the pocket structure portion 11 of side door 3 is by for example the circumference of outer panels 12 being turned back (implementing crimping processing) under the state of panel 12 and the coincidence part filling adhesive 14 of wainscot 13 outside by outer panels 12 with wainscot 13 is integrated forms.Then, coating operator 8, by being coated with from being located at the gap insertion coating gun 10 of the surrounding of pocket structure portion 11, is forming the inner face of outer panels 12 of pocket structure portion 11 and the wax 15 of the inner face of wainscot 13 coating conduct coating thing.
In addition, in the present embodiment, above-mentioned check system as shown in Figure 10, also possess: be provided with the functional unit 22 that shows instruction unit 20 and carry instruction unit 21, wherein show that instruction unit 20 indicates still image 18 to the demonstration of monitor 7 by operation, carry instruction unit 21 by operation, to indicate the conveying of the car body 1 that supply unit 23 (with reference to figure 2) carries out.In the present embodiment, for while carrying car body 1 to carry out above-mentioned a series of operation, if there is the indication of conveying to carry with regard to so continuing, if carry indication (if not carrying the operation of instruction unit 21) to stop at process aftercarriage preset time 1.In addition, in the present embodiment, control so that carry the operation of instruction unit 21 only becoming effectively by showing after the operation of instruction unit 20 makes still image 18 be presented at monitor 7.Thus, can avoid pushing the wrong that the situation lower body 1 that shows instruction unit 20 and carry instruction unit 21 does not accept to be coated with the coating inspection that operator 8 carries out and the state of affairs that flows into subsequent processing.The functional unit 22 of above-mentioned formation is for example arranged on coating gun 10, the state in using the coating operator 8 of coating gun 10 immediately to operate.
Fig. 9 A～Fig. 9 C represents the example as the demonstration form of the monitor 7 of display part, the situation (Fig. 9 C) that has the situation (Fig. 9 A) that only shows dynamic image 17, the device (Fig. 9 B) that simultaneously shows dynamic image 17 and still image 18 and further show check result 19.At this, dynamic image 17 is to show continuously with infrared thermal imager 6 to take and Temperature Distribution in the dispensing area of the wax 15 that obtains image over time, and still image 18 is the images of Temperature Distribution in the given moment of the above-mentioned dynamic image 17 of demonstration.
In addition, these Temperature Distribution as dynamic image 17 or still image 18 demonstrations can be also the raw data obtaining with infrared thermal imager 6 reference object positions (position of the dispensing area that comprises wax 15), but from more practical viewpoint, for ease of differentiating, whether be suitably coated with wax 15, can be that raw data is implemented to given processing and the data that obtain.
The coating scope evaluation method of wax that particularly, can the coating film thickness evaluation method, the 2nd side of the present invention that adopt the related wax in the 1st side of the present invention narrate is the related and evaluation result that obtains is presented at monitor 7 as dynamic image 17 or still image 18.Wherein, if the situation of monitor 7 will be for example presented at by the result that coating scope evaluation method obtains, also can (1) obtain by taking applied parts with infrared thermal imager 6 the surface temperature T that is coated with the applied parts before wax 15 p1, and start to be coated with the back temperature T of the dispensing area 9 (with reference to figure 5A etc.) of the wax after wax 15 p2calculate the back temperature T of dispensing area p2, with coating before surface temperature T p1the poor T of actual temperature r, and consider that the temperature of the dispensing area that the coating of wax 15 causes rises to set the back temperature T of dispensing area 9 p2with the surface temperature T before coating p1the lower limit allowable value T of temperature difference T l, the lower limit allowable value T that is only temperature difference by the poor TR of above-mentioned actual temperature labove region is presented at monitor 7 as dynamic image 17 and still image 18.In this case, for example the evaluation result (Temperature Distribution) shown in Fig. 5 A～Fig. 7 B is presented at the given position of monitor as dynamic image 17 or still image 18.In addition, the poor T of actual temperature rreflected that the shown up-to-date back temperature of dynamic image 17 distributes, still image 18 has reflected that the back temperature of the time point of the demonstration instruction unit 20 that coating operator 8 operations are indicated the demonstration of still image 18 distributes.
Or, if the result that the use coating film thickness evaluation method in above-mentioned evaluation method is obtained is presented at the situation of monitor 7, (2) also can take the surface temperature T that applied parts are obtained the applied parts before coating wax 15 with infrared thermal imager 6 p1, and start to be coated with the back temperature T of the dispensing area 9 of the wax after wax 15 p2calculate the back temperature T of dispensing area p2, with coating before surface temperature T p1the poor T of actual temperature r, the coating condition of the wax 15 based on for applied parts is carried out the back temperature T of induced representation dispensing area 9 p2with the surface temperature T before coating p1temperature difference T and the coating film thickness t of wax 15, wAXthe theoretical formula of relation, and set the lower limit allowable value tL with coating film thickness, the lower limit allowable value T of corresponding temperature difference based on this theoretical formula l, and only by the poor T of actual temperature rlower limit allowable value T for temperature difference labove region is presented at monitor 7 as dynamic image 17 and still image 18.In this case, be also that for example the evaluation result (Temperature Distribution) shown in Fig. 5 A～Fig. 7 B is presented at the given position of monitor as dynamic image 17 or still image 18.In addition, the poor T of actual temperature rreflected that the up-to-date back temperature being shown by dynamic image 17 distributes, still image 18 has reflected that the back temperature of the time point of the demonstration instruction unit 20 that coating operator 8 operations are indicated the demonstration of still image 18 distributes.
Next based on accompanying drawing explanation, used the example of inspection method of the coating check system of above-mentioned formation.
(S31) coating flow chart
First, as shown in Figure 2, when car body 1 being moved into the given position (coating job position) of coating operation station 2, under the state of opening side door 3, back door 4 and car bonnet 5, a plurality of coating operators 8 move to respectively and become before the side door 3 of taken on coating object, back door 4 and car bonnet 5, with the wax 15 that hand-held coating gun 10 sprays antirust use towards the pocket structure portion 11 of each applied parts (side door 3, back door 4, car bonnet 5), are coated with.In addition, now, with the infrared thermal imager corresponding with each applied parts 6, take, dispensing area in the outside surface in outside of side door 3, back door 4 and car bonnet 5, wax 15 is included in coverage, obtain thus the Temperature Distribution of dispensing area.Then, using the Temperature Distribution of the dispensing area of the wax of obtaining 15 as dynamic image 17, be presented at monitor 7 (with reference to figure 9A).Now, for example, be equal to the Temperature Distribution that obtains in advance this region before coating, and the Temperature Distribution of having implemented after the processing of above-mentioned (1) or (2) is presented to monitor 7 continuously as dynamic image 17.
(S32) still image shows operation
So, after the coating end of job of wax 15, the demonstration instruction unit 20 of coating operator 8 operating operation parts 22, the still image 18 distributing at monitor 7 displays temperatures like that as shown in Figure 9 B.In this case, shown still image 18 is Temperature Distribution of the running time point of the demonstration instruction unit 20 in dynamic image 17.The demonstration form of still image 18 is now not particularly limited, for example, also can as shown in Figure 9 B, still image 18 and dynamic image 17 be shown under horizontal state side by side simultaneously.In addition, also can show still image 18 to be greater than the size of dynamic image 17.
(S33) well whether judge operation
The Temperature Distribution that so shows dispensing areas at monitor 7 as still image 18 after, the actual coating operator 8 who has carried out coating operation is seeing monitor 7, the still image 18 based on being presented at monitor 7 is coated with well whether judging of state.That is, if the Zone Full of the above predetermined coating of district inclusion of the given temperature (threshold value) of the expression in the Temperature Distribution showing as still image 18 will be coated with condition judgement for good, and advance to next (S34) car body conveying operation.Or, in the situation that represent the region that region more than threshold value does not comprise the predetermined coating of a part, coating state, for not good, be in other words judged to be holiday and (do not waxed 15, or the inadequate region of coating film thickness), advance to (S35) recoat operation (Figure 11).In addition, as the display format to monitor 7, for example, as shown in Fig. 5 A～Fig. 7 B, for ease of coating operator 8 a glances, grasp, can adopt and represent that the region of temperature more than threshold value and the region that expression is less than the temperature of threshold value make the clear and definite diverse ways of tone.
(S34) car body is carried operation
Above-mentioned whether good, judge that operation S33 is judged to be coating in the situation that in good condition by being coated with operator 8, the conveying instruction unit 21 of coating operator 8 operating operation parts 22 is carried out the conveying to supply unit 23 indication car bodies 1.In the present embodiment, while in order to carry car body 1 to carry out above-mentioned a series of operation, if there is the indication of conveying just so to continue to carry car body 1.Thus, for example, by supply unit 23, the car body 1 that finishes to check is transported to subsequent processing, a series of operation of this car body 1, inspection are finished.In addition, by carrying the operation of instruction unit 21, at monitor 7, show check result 19 (for example demonstration of " OK "), be not only coated with operator 8 in person, operator around also can recognize coating (Fig. 9 C) in good condition.
(S35) recoat operation
Above-mentioned whether good judge operation by be coated with operator 8 be judged to be coating be not in good state, be judged to be holiday in the situation that, coating operator 8 is coated with wax 15 (recoat) again in the region that has holiday.In this case, in judgement, according to still image used 18, infer have behind the region of holiday, by making the front end (nozzle) of coating gun 10 again spray wax 15 towards corresponding position, carry out thus the coating of corresponding site.In addition, Yi Bian confirm that dynamic image 17 is confirmed whether suitably to have carried out recoat simultaneously, Yi Bian at uncoated area coating wax 15.So, after the recoat end of job, again operate the demonstration instruction unit 20 of still image 18, Temperature Distribution during by the recoat end of job is shown as still image 18 again, judge that well whether it, until there is being judged to be good result of determination, above-mentioned operations (S32, S33, S35) repeatedly all.Carrying the operation of instruction unit 21 and passing through the time point of the coating activity duration that can allow, car body 1 stops, and produces warning tones etc.In addition, at monitor 7, be shown as the not good such check result 19 of coating (for example demonstration of " NG "), comprise coating operator 8 I, operator around also can recognize that coating has occurred is not good.
So, in the present invention, because scope that can vision identifications coating operator 8 sets the monitor 7 of the Temperature Distribution of the dispensing area that shows that the shooting by infrared thermal imager 6 obtains, therefore, coating operator 8 self can confirm that coating state carries out the whether good relevant inspection to this coating operation.In addition, now, by showing that the Temperature Distribution of demonstration dispensing area is asked the dynamic image 17 through changing at any time continuously at monitor 7, while coating operator 8 can see in operation process that the Temperature Distribution of applied parts is coated with operation.Thereby, can be coated with swimmingly operation.In addition, owing to showing at monitor 7 still image 18 in the given moment of dynamic image 17, therefore, can under static state confirm to be for example coated with the end time point of operation still image 18, be coated with the Temperature Distribution of the dispensing area after operation has just completed.Thus, due to can be in detail and correctly check coating state well whether, therefore can be determined with without holiday rapidly and correctly, and for the region that needs recoat, also can self be grasped rapidly and correctly by coating operator 8.Certainly, can also show the end time still image 18 of point carrys out well whether judging of detailed inspection recoat by just new when the recoat end of job.Therefore, not only for initial coating operation, and also can carry out rapidly and correctly for the inspection of recoat operation.
In addition, in the present embodiment, due to the dynamic image of the Temperature Distribution for dispensing area 17 and still image 18 are simultaneously displayed on to 1 monitor 7 (Fig. 9 B, Fig. 9 C), therefore can show after the still image 18 that dynamic images 17 carve at a time at monitor 7, the Temperature Distribution after being presented at continuously while obtaining this still image 18 by dynamic image 17 is asked the variation through generation at any time.Thus, can, determine whether needs recoat as described above based on still image 18 after, while comparing, the dynamic image 17 of the result midway of the recoat operation after seeing this still image 18 and reflecting be coated with operation.Therefore, on one side real-time confirmation has finished the region of recoat and has also needed the region of recoat, Yi Bian be coated with operation, energy is smooth and easy and promptly carry out recoat operation.
In addition, in the present embodiment, owing to also possessing by operation, indicate still image 18 to the demonstration instruction unit 20 of the demonstration of monitor 7 and by operation, indicate the conveying instruction unit 21 of the conveying of the car body 1 that supply unit 23 carries out, therefore, coating operator 8, finish after coating operation, by operation, show instruction unit 20, the Temperature Distribution after monitor 7 completes coating operation is shown as still image 18.Then, coating operator 8 self judge coating operation well whether, in the situation that being judged as no problem (there is no holiday), can carry that instruction unit 21 carries out being undertaken by supply unit 23 by operation to thering is the conveying of the car body 1 of applied parts.On the other hand, in the situation that coating operator 8 judges that according to still image 18 the whether good result of coating operation is to have problem (having holiday), if instruction unit 21 is carried in inoperation, until through can not making car body 1 carry out recoat operation preset time with stopping.And, thereby by recoat operation, no longer there is holiday, coating operator 8 is judged to be and can be transported to subsequent processing, can carry instruction unit 21 not make corresponding car body 1 carry by operation with stopping.By with co-relation, can be rapidly and positively to carry out these a series of inspections and carry operation totally.
In addition, in the present embodiment, using the monitor as display part 7 be equipped on the car body 1 that flows through on coating operation station 2 above.This coating operation conventionally as shown in Figure 1, is carried out on the production line of car body 1 that becomes applied parts, and carries out the coating operation at a plurality of positions by a plurality of coating operators 8 simultaneously.Thereby, only when the one-sided side of coating operation station 2 sets monitor 7, can there be other operator of the coating operator 8 who comprises other position, the equipment of periphery to block the visual field, thereby can not in coating operation process, confirm the situation of the Temperature Distribution of dispensing area.About this point, in the present embodiment, owing to setting monitor 7 above car body 1 and towards taking on coating operator 8 ground that are respectively coated with position, therefore can avoid as far as possible this problem, thereby promote corresponding coating operator's 8 vision identification.
More than narrated 1 embodiment of the related coating check system in the 3rd side of the present invention, the present invention only otherwise depart from and reflected that the formation of its intention just can adopt above-mentioned formation in addition.
For example, in the above-described embodiment, exemplified with showing instruction unit 20 and carry the functional unit 22 of instruction unit 21 to be arranged on the situation of coating gun 10 arranging, but be certainly not limited to this form.As long as be coated with when showing instruction unit 20 and carrying instruction unit 21 to be configured in coating operation in the scope that operator 8 hand gets at, for example, be configured near the configured equipment of operation area or self equip etc. by being coated with operator 8.Or, also can will show instruction unit 20 and carry instruction unit 21 to be also used as the injection cock (control lever) of coating gun 10.In this case, the opening operation of the injection cock after the coating end of job triggers performance function as the demonstration of still image 18.In addition, the temperature actuated of the injection cock after making it is obtained and is triggered and performance function as the demonstration triggering of dynamic image 17 or the shooting of infrared thermal imager 6.
In addition, in the above-described embodiment, enumerating while the situation of carrying car body 1 to implement coating operation is example, certainly, also can take following mode: make the car body 1 importing on coating operation station 2 be coated with operation under the state temporarily stopping, self being checked that by coating operator 8 result of (well whether judging) is to be judged to be while there is no holiday, by operation, carry instruction unit 21 to control, thereby make car body 1 restart conveying.
Symbol description
1 car body
2 coating operation stations
3 side doors
4 back doors
5 car bonnets
6 infrared thermal imagers
7 monitors
8 coating operators
9 dispensing areas
10 coating guns
11 pocket structure portions
12 outer panels
13 wainscots
14 bonding agents
15 waxes
16 uncoated area
17 dynamic images
18 still images
19 check results
20 show instruction unit
21 carry instruction unit
22 functional units
23 supply units

Claims (9)

1. a coating film thickness evaluation method for wax, is characterized in that possessing:
Temperature obtains operation, by with infrared thermal imager, take applied parts obtain the uncoated wax in described applied parts uncoated area surface temperature and be coated with the back temperature in the region of described wax;
The poor operation of calculating of actual temperature, the actual temperature of calculating the back temperature of described dispensing area and the surface temperature of described uncoated area is poor;
Theoretical formula derives operation, the coating condition of the described wax based on for described applied parts, the theoretical formula of the relation of the temperature difference described in induced representation between the back temperature of dispensing area and the surface temperature of described uncoated area and the coating film thickness of described wax; With
Coating film thickness is evaluated operation, uses described theoretical formula, according to the poor evaluation of carrying out the actual coating film thickness of described wax of described actual temperature.
2. a coating scope evaluation method for wax, is characterized in that possessing:
Temperature obtains operation, with infrared thermal imager take applied parts obtain the uncoated wax in described applied parts uncoated area surface temperature and be coated with described wax and the back temperature of the dispensing area of the described wax after the set time;
The poor operation of calculating of actual temperature, calculates the back temperature, poor with the actual temperature of the surface temperature of described uncoated area of described dispensing area;
Lower limit allowable value is set operation, considers that the temperature of the caused described dispensing area of coating of described wax rises, and sets the lower limit allowable value of the temperature difference of the back temperature of described dispensing area and the surface temperature of described uncoated area; With
Coating scope is evaluated operation, and lower limit allowable value poor based on described actual temperature and described temperature difference is evaluated the coating scope of described wax,
In described lower limit allowable value, set in operation, add the temperature of the described uncoated area that the heat transmission from the dispensing area of described wax to uncoated area causes to rise to set the lower limit allowable value of described temperature difference.
3. the coating film thickness evaluation method of wax according to claim 1 and 2, is characterized in that,
In described temperature, obtain in operation, obtain the surface temperature of the described applied parts before the described wax of coating as the surface temperature of described uncoated area.
4. the coating film thickness evaluation method of wax according to claim 1 and 2, is characterized in that,
In described temperature, obtain in operation, obtain the surface temperature of the described applied parts except the coating presumptive area of described wax as the surface temperature of described uncoated area.
5. the coating film thickness evaluation method of wax according to claim 1, is characterized in that,
The coating film thickness evaluation method of described wax also possesses:
Lower limit allowable value is set operation, sets the lower limit allowable value of the described temperature difference corresponding with the lower limit allowable value of described coating film thickness based on described theoretical formula,
In described coating film thickness, evaluate in operation, calculate with infrared thermal imager take and the described actual temperature that obtains poor be region more than the lower limit allowable value of described temperature difference, and only show region more than described lower limit allowable value in the monitor setting in the position that the coating operator of described wax can vision identification.
6. the coating scope evaluation method of wax according to claim 2, is characterized in that,
The coating scope evaluation method of described wax also possesses:
Theoretical formula derives operation, and the coating condition of the described wax based on for described applied parts is carried out the theoretical formula of the back temperature of dispensing area and the relation of the temperature difference of surface temperature before described coating and the coating film thickness of described wax described in induced representation,
In described lower limit allowable value, set in work, based on described theoretical formula, calculate the theoretical value of the lower limit allowable value of the described temperature difference corresponding with the lower limit allowable value of described coating film thickness, the temperature that adds the described uncoated area that the heat transmission from the dispensing area of described wax to uncoated area causes in this theoretical value rises, and calculates the lower limit allowable value of described temperature difference.
7. the coating scope evaluation method of wax according to claim 2, is characterized in that,
In the monitor that position that can vision identification the coating operator of described wax sets, only show with described infrared thermal imager take and the described actual temperature that obtains poor be more than the lower limit allowable value of described temperature difference region.
8. be coated with a check system, for checking being applied to the coating state of the coating thing of applied parts, this coating check system is characterised in that to possess:
Infrared thermal imager, it takes the dispensing area that has at least been coated with described coating thing in described applied parts; With
Display part, its be equipped on coating operator can vision the position of identification, show the Temperature Distribution of the described dispensing area that the shooting by described infrared thermal imager obtains,
Described display part can show: the Temperature Distribution that shows continuously described dispensing area is the still image in the given moment through the dynamic image of the variation that occurs and described dynamic image in time.
9. coating check system according to claim 8, is characterized in that,
Described coating check system also possesses:
Show instruction unit, it indicates described still image to the demonstration of described display part by operation; With
Carry instruction unit, it indicates the conveying of the described applied parts that supply unit carries out by operation.
CN201280058045.3A 2011-11-30 2012-11-30 The coating film thickness and coating scope evaluation method and coating inspection system of wax Active CN103988047B (en)

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JP2011-261992 2011-11-30
JP2011-261993 2011-11-30
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JP2012241072A JP6124394B2 (en) 2012-10-31 2012-10-31 Dispensing inspection system
JP2012-241072 2012-10-31
PCT/JP2012/081209 WO2013081151A1 (en) 2011-11-30 2012-11-30 Method for evaluating coated film thickness and coating range of wax, and coating inspection system

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CN110026350A (en) * 2018-01-11 2019-07-19 丰田自动车株式会社 For the inspection method of radiator, inspection equipment, production method and production system
CN110360974A (en) * 2019-06-27 2019-10-22 广东美的厨房电器制造有限公司 Food thickness estimating and measuring method and relevant apparatus
CN110660696A (en) * 2019-08-27 2020-01-07 浙江博蓝特半导体科技股份有限公司 Manufacturing method of sapphire substrate and wax dropping equipment
CN114087998A (en) * 2021-11-25 2022-02-25 重庆海浦洛自动化科技有限公司 Online film thickness detection system for cavity wax injection system

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