JPH11211647A - Method for density measurement and method for controlling coating amount - Google Patents
Method for density measurement and method for controlling coating amountInfo
- Publication number
- JPH11211647A JPH11211647A JP2377098A JP2377098A JPH11211647A JP H11211647 A JPH11211647 A JP H11211647A JP 2377098 A JP2377098 A JP 2377098A JP 2377098 A JP2377098 A JP 2377098A JP H11211647 A JPH11211647 A JP H11211647A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- measured
- density
- measuring
- amount
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 45
- 239000011248 coating agent Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001739 density measurement Methods 0.000 title 1
- 239000000463 material Substances 0.000 claims description 9
- 230000001678 irradiating effect Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000005250 beta ray Effects 0.000 abstract description 9
- 238000005520 cutting process Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 101100444142 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) dut-1 gene Proteins 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は密度測定方法およびその
密度測定方法を利用した塗布量制御方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring density and a method for controlling the amount of coating using the method.
【０００２】[0002]
【従来技術及び問題点】たとえば印刷用ブランケットの
ように、補強布に対しゴム層を設けるような構造の製品
においては、前記ゴムの塗布量が一定であり、均一に塗
布されているのが好ましい。このような補強布に対して
ゴムを塗布していく場合、補強布にゴムを引き、乾燥
後、さらにゴムを引くというように複数回にわけて行
い、なるべく均一にゴムが塗布されるようにしている。2. Description of the Related Art In a product such as a printing blanket having a structure in which a rubber layer is provided on a reinforcing cloth, it is preferable that the applied amount of the rubber is constant and the rubber is uniformly applied. . When applying rubber to such a reinforcing cloth, the rubber is applied to the reinforcing cloth, dried, and then the rubber is further applied in a plurality of times, so that the rubber is applied as uniformly as possible. ing.
【０００３】しかしながら上述のような方法においても
１回の塗布量は定量であるため、必ずしも均一に行われ
るとは限らないおそれがある。したがって、製品になっ
た後のものを、ランダムに採取して、試験片を切り取
り、単位面積の重量を通常の秤で測定して塗布量を知る
ことが行われている。この場合、塗布量が所定の量でな
いときには、そのロット全体が不良品になり、コストが
上昇する原因になっていた。However, even in the above-described method, since the amount of one application is a fixed amount, there is a possibility that the application is not always performed uniformly. Therefore, it is practiced to randomly sample the product after it has been formed, cut out a test piece, measure the weight per unit area with a normal balance, and know the amount of application. In this case, when the application amount is not the predetermined amount, the whole lot becomes defective and causes an increase in cost.
【０００４】本発明は上述の問題点に鑑みなされたもの
であり、前述のように製品の一部を切り取ることなく前
記製品の単位体積あたりの密度を測定可能であり、した
がって塗布量を検知可能な密度の測定方法および前記密
度の測定によって、塗布量の制御を行う方法を提供する
ことを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and as described above, it is possible to measure the density per unit volume of a product without cutting off a part of the product, and thus to detect the applied amount. It is an object of the present invention to provide a method for measuring the density and a method for controlling the amount of application by measuring the density.
【０００５】[0005]
【問題点を解決するための手段】上述の問題点を解決す
るため、本発明による密度測定方法は、レーザ光線を被
測定物に照射し、前記被測定物の表面より反射するレー
ザ光と裏面より反射するレーザ光の時間差を測定するこ
とによって前記被測定物の厚さを検知する工程、前記被
測定物にベータ線を照射し、その単位面積あたりの透過
量によって重量を検知する工程を含むことを特徴とす
る。Means for Solving the Problems To solve the above-mentioned problems, the density measuring method according to the present invention is directed to a method of irradiating a laser beam to an object to be measured with a laser beam reflected from the surface of the object and a back surface. Detecting the thickness of the object by measuring the time difference between the more reflected laser light, irradiating the object with beta rays, and detecting the weight by the amount of transmission per unit area. It is characterized by the following.
【０００６】また本発明による塗布量制御方法は、塗布
前の被塗布物の密度を測定する工程、被塗布物に塗布物
を塗布する工程、塗布後の被塗布物の密度を測定する工
程、前記塗布後の被塗布物の密度と塗布前の密度の関係
によって、塗布量を制御する工程を含む塗布量制御方法
であって、前記密度の測定はレーザ光線を被塗布物に照
射し、前記被塗布物の表面より反射するレーザ光と裏面
より反射するレーザ光の時間差を測定することによって
前記被塗布物の厚さを検知する工程、前記被塗布物にベ
ータ線を照射し、その単位面積あたりの透過量によって
重量を検知する工程によって行うことを特徴とする。The method of controlling the amount of coating according to the present invention includes a step of measuring the density of the object before coating, a step of applying the object to the object, and a step of measuring the density of the object after coating. The application amount control method including a step of controlling the application amount by the relationship between the density of the object to be applied after the application and the density before the application, wherein the measurement of the density is performed by irradiating the object with a laser beam, Detecting the thickness of the object by measuring the time difference between the laser light reflected from the front surface and the laser light reflected from the back surface of the object, irradiating the object with beta rays, and applying a unit area It is characterized by performing the step of detecting the weight based on the permeation amount per unit.
【０００７】本発明によれば、レーザ光線によって前記
被測定物の厚さを、またベータ線の照射およびその透過
量によって単位面積あたりの重量を検知することによっ
て、単位体積あたりの重量（密度）を知ることが可能に
なり、前記被測定物を切り取ることなく密度（塗布量）
の測定が可能になる。また本発明による塗布量制御方法
によれば、塗布前の被塗布物の密度と、塗布後の密度を
知ることによって、塗布量を知ることが可能であり、こ
の塗布量のデータをフィードバックして塗布装置の塗布
量を制御するようにしたため、塗布量のばらつきがな
く、均一な塗布を確保できるという利点がある。According to the present invention, the thickness (density) per unit volume is detected by detecting the thickness of the object to be measured by a laser beam and the weight per unit area by the irradiation of beta rays and the amount of transmission thereof. Density (coating amount) without cutting out the object to be measured
Can be measured. According to the application amount control method of the present invention, the application amount can be known by knowing the density of the object before application and the density after application, and the data of the application amount is fed back. Since the application amount of the application device is controlled, there is an advantage that there is no variation in the application amount and uniform application can be ensured.
【０００８】[0008]
【実施例】図１は本発明による典型的な塗布方法を概略
的に示すものであるが、この図より明らかなように被塗
布物１は塗布装置２の塗布ロール２１、案内ロール３に
よって乾燥装置４に導かれ、さらに案内ロール３により
エクスパンダーロール５をへて、再度塗布ロール２１に
導かれるようになっている。塗布装置２は前述の塗布ロ
ール２１と塗布物６を塗布するためのドクターナイフ２
２とよりなり、塗布ロール２１の回転により被塗布物１
が搬送されるときに、ペースト状の塗布物６が被塗布物
１上に塗布されるようになっている。FIG. 1 schematically shows a typical coating method according to the present invention. As is apparent from FIG. 1, an object to be coated 1 is dried by a coating roll 21 and a guide roll 3 of a coating apparatus 2. It is guided to the device 4, and is further guided by the guide roll 3 through the expander roll 5 and again to the application roll 21. The coating device 2 is a doctor knife 2 for coating the coating roll 21 and the coating material 6 described above.
2 and the object 1 to be coated is
Is transported, the paste-like coating material 6 is applied onto the coating target 1.
【０００９】被塗布物１は、その後乾燥装置４に導か
れ、塗布物６を乾燥した後、さらに案内ロール３および
エクスパンダーロール５を経て再度塗布物６が塗布され
るようになっている。The article to be coated 1 is then guided to a drying device 4, where the article 6 is dried, and then the article 6 is applied again through a guide roll 3 and an expander roll 5.
【００１０】本発明においては、密度測定装置７が塗布
物６の塗布前と塗布後の位置に設けられている。この密
度測定装置７は図２に示すようなレーザ厚さ測定機Ｒを
有しており、前記レーザ厚さ測定機Ｒは、レーザ照射受
光装置部７１により被測定物（被塗布物）１に対し垂直
な方向にレーザ光線を照射し、前記被測定物１の裏面
（事実上は測定台７２の表面）から反射したレーザ光線
の行程時間ｔ0を測定する。さらに同様に垂直な方向に
レーザ光線を照射して、被測定物１の表面から反射する
行程時間ｔ1を測定する。このとき被測定物の厚さｌは
１／２×（ｔ0−ｔ1）ｃ（ただしｃは光速を示す）とな
る。In the present invention, the density measuring devices 7 are provided at positions before and after the application of the coating material 6. The density measuring device 7 has a laser thickness measuring device R as shown in FIG. 2, and the laser thickness measuring device R is applied to an object to be measured (object to be coated) 1 by a laser irradiation light receiving device 71. A laser beam is irradiated in a direction perpendicular to the direction, and the stroke time t 0 of the laser beam reflected from the back surface of the DUT 1 (actually, the surface of the measuring table 72) is measured. Further, similarly, a laser beam is irradiated in a vertical direction, and a stroke time t 1 reflected from the surface of the DUT 1 is measured. At this time, the thickness l of the object to be measured is ×× (t 0 −t 1 ) c (where c indicates the speed of light).
【００１１】一方、ベータ線重量測定機Ｗは、図３に示
すようにベータ線照射装置部７３と対称となる位置にカ
ウンター７４を有しており、ベータ線を被測定物１に垂
直に照射し、透過するベータ線量をカウンター７４で測
定することによって行われる。ベータ線の単位面積あた
りの照射量はあらかじめ知られており、またベータ線の
透過量を測定することによってベータ線の被測定物１に
よる吸収量が検知できる。この吸収量は被測定物の重量
に対応することが知られており、これによって前記単位
面積あたりの重量が測定でき、また厚さｌが測定される
ので、前記被測定物１の単位体積あたりの密度ρを知る
ことが可能になる。On the other hand, as shown in FIG. 3, the beta-ray weighing machine W has a counter 74 at a position symmetrical to the beta-ray irradiator 73, and irradiates the object 1 with beta rays vertically. This is done by measuring the transmitted beta dose with a counter 74. The irradiation amount of the beta ray per unit area is known in advance, and the absorption amount of the beta ray by the DUT 1 can be detected by measuring the transmission amount of the beta ray. It is known that this absorption amount corresponds to the weight of the device under test, whereby the weight per unit area can be measured, and the thickness l is measured. Can be known.
【００１２】このとき塗布前の密度ρ0とし塗布後の密
度をρ1とすると、（ρ1−ρ0）＝Δρが塗布量に相当
することになる。このΔρが所定範囲にあるときには、
所望の塗布量が得られていることになるが、所定範囲よ
り外れた場合には、前記Δρを制御装置（図示せず）に
フィードバックし、塗布装置２によって塗布する量を所
定範囲内になるようにドクターナイフ２２などの制御を
行う。このように塗布量を制御することによって、被塗
布物１への塗布物６の塗布量が制御されることになり、
均一な製品を製造することが可能になる。At this time, assuming that the density before coating is ρ 0 and the density after coating is ρ 1 , (ρ 1 −ρ 0 ) = Δρ corresponds to the coating amount. When this Δρ is within a predetermined range,
A desired amount of coating is obtained, but if it is out of the predetermined range, the Δρ is fed back to a control device (not shown), and the amount applied by the coating device 2 falls within the predetermined range. Thus, the doctor knife 22 and the like are controlled. By controlling the coating amount in this manner, the coating amount of the coating material 6 on the workpiece 1 is controlled,
It is possible to produce a uniform product.
【００１３】このように製品を製造する全行程で本発明
による塗布量を制御する方法を使用することによって、
品質検査を省略することが可能になる。By using the method for controlling the amount of coating according to the present invention in the whole process of manufacturing a product,
The quality inspection can be omitted.
【００１４】[0014]
【発明の効果】以上説明したように本発明による密度の
測定方法によれば、レーザ光線によって前記被測定物の
厚さを、またベータ線の照射およびその透過量によって
単位面積あたりの重量を検知することによって、単位体
積あたりの重量（密度）を知ることが可能になり、前記
被測定物を切り取ることなく密度（塗布量）の測定が可
能になる。また本発明による塗布量の制御方法によれ
ば、塗布前の被塗布物の密度と、塗布後の密度を知るこ
とによって、塗布量を知ることが可能であり、この塗布
量のデータをフィードバックして塗布装置の塗布量を制
御するようにしたため、塗布量のばらつきがなく、均一
な塗布を確保できるという利点がある。As described above, according to the density measuring method of the present invention, the thickness of the object to be measured is detected by a laser beam, and the weight per unit area is detected by the irradiation of beta rays and the amount of transmission. By doing so, it is possible to know the weight (density) per unit volume, and it is possible to measure the density (coating amount) without cutting out the object to be measured. Further, according to the coating amount control method according to the present invention, it is possible to know the coating amount by knowing the density of the object to be coated before the coating and the density after the coating, and feeding back the data of the coating amount. Since the application amount of the application device is controlled by the application, there is an advantage that there is no variation in the application amount and uniform application can be ensured.
【図１】本発明による塗布量制御方法を説明するための
概略図。FIG. 1 is a schematic diagram for explaining a coating amount control method according to the present invention.
【図２】本発明による厚さ測定機を説明するための概略
図。FIG. 2 is a schematic diagram for explaining a thickness measuring machine according to the present invention.
【図３】本発明による重量測定機を説明するための概略
図。FIG. 3 is a schematic diagram illustrating a weighing machine according to the present invention.
１ 被塗布物（被測定物） ２ 塗布装置 ２１ 塗布ロール ２２ ドクターナイフ ３ 案内ロール ４ 乾燥装置 ５ エクスパンダーロール ６ 塗布物 ７ 密度測定機 ７１ レーザ照射受光装置部 ７３ ベータ線照射装置部 ７４ カウンター Ｒ レーザ厚さ測定機 Ｗ ベータ線重量測定機 DESCRIPTION OF SYMBOLS 1 Coated object (measurement object) 2 Coating device 21 Coating roll 22 Doctor knife 3 Guide roll 4 Drying device 5 Expander roll 6 Coated material 7 Density measuring device 71 Laser irradiation light receiving device part 73 Beta ray irradiation device part 74 Counter R Laser thickness measuring machine W Beta ray weighing machine
Claims (2)
定物の表面より反射するレーザ光と裏面より反射するレ
ーザ光の時間差を測定することによって前記被測定物の
厚さを検知する工程、前記被測定物にベータ線を照射
し、その単位面積あたりの透過量によって重量を検知す
る工程を含むことを特徴とする密度測定方法。A thickness of the object is detected by irradiating the object with a laser beam and measuring a time difference between a laser beam reflected from a front surface of the object and a laser beam reflected from a back surface of the object. A density measuring method, comprising: irradiating the object to be measured with beta rays, and detecting a weight based on a transmission amount per unit area.
被塗布物に塗布物を塗布する工程、塗布後の被塗布物の
密度を測定する工程、前記塗布後の被塗布物の密度と塗
布前の密度の関係によって、塗布量を制御する工程を含
む塗布量制御方法であって、前記密度の測定はレーザ光
線を被塗布物に照射し、前記被塗布物の表面より反射す
るレーザ光と裏面より反射するレーザ光の時間差を測定
することによって前記被塗布物の厚さを検知する工程、
前記被塗布物にベータ線を照射し、その単位面積あたり
の透過量によって重量を検知する工程によって行うこと
を特徴とする塗布量制御方法。2. A step of measuring the density of the object before application,
A step of applying the coating material to the coating object, a step of measuring the density of the coating material after coating, and a step of controlling the amount of coating by a relationship between the density of the coating material after coating and the density before coating. In the method of controlling the amount of coating, the density is measured by irradiating the object with a laser beam and measuring a time difference between laser light reflected from a surface of the object and laser light reflected from a back surface of the object. A process of detecting the thickness of the applied material,
Irradiating the object with beta rays and detecting the weight based on the transmission amount per unit area of the object;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2377098A JPH11211647A (en) | 1998-01-21 | 1998-01-21 | Method for density measurement and method for controlling coating amount |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2377098A JPH11211647A (en) | 1998-01-21 | 1998-01-21 | Method for density measurement and method for controlling coating amount |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11211647A true JPH11211647A (en) | 1999-08-06 |
Family
ID=12119590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2377098A Pending JPH11211647A (en) | 1998-01-21 | 1998-01-21 | Method for density measurement and method for controlling coating amount |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11211647A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8813552B2 (en) | 2009-07-28 | 2014-08-26 | Toyota Jidosha Kabushiki Kaisha | Detecting apparatus |
-
1998
- 1998-01-21 JP JP2377098A patent/JPH11211647A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8813552B2 (en) | 2009-07-28 | 2014-08-26 | Toyota Jidosha Kabushiki Kaisha | Detecting apparatus |
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| Date | Code | Title | Description |
|---|---|---|---|
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Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20020716 |