WO2021033780A1 - 差圧式ホットメルト接着剤流量計を装備するホットメルト接着剤塗布装置 - Google Patents

差圧式ホットメルト接着剤流量計を装備するホットメルト接着剤塗布装置 Download PDF

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Publication number
WO2021033780A1
WO2021033780A1 PCT/JP2020/032493 JP2020032493W WO2021033780A1 WO 2021033780 A1 WO2021033780 A1 WO 2021033780A1 JP 2020032493 W JP2020032493 W JP 2020032493W WO 2021033780 A1 WO2021033780 A1 WO 2021033780A1
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WO
WIPO (PCT)
Prior art keywords
hot melt
melt adhesive
measurement
flow rate
flow
Prior art date
Application number
PCT/JP2020/032493
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English (en)
French (fr)
Japanese (ja)
Inventor
昇二 日高
浩 品川
Original Assignee
株式会社サンツール
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 株式会社サンツール filed Critical 株式会社サンツール
Priority to JP2021540996A priority Critical patent/JPWO2021033780A1/ja
Publication of WO2021033780A1 publication Critical patent/WO2021033780A1/ja

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
    • G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • G01F1/40—Details of construction of the flow constriction devices
    • G01F1/42—Orifices or nozzles

Definitions

  • the present invention relates to a coating device to which a viscous hot melt adhesive is applied. More specifically, the present invention relates to a means for measuring the flow rate of the hot melt adhesive in a coating apparatus to which the hot melt adhesive is applied.
  • Patent Document 4 discloses a differential pressure type flow meter.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 56-17656 “Method and apparatus for applying liquid composition”
  • Patent Document 2 Special Fair 1-486185 "Applying device for liquid composition”
  • Patent Document 3 Japanese Patent Application Laid-Open No. 2-48191 "Manufacturing apparatus for hot melt thermoplastic adhesive foam”
  • Patent Document 4 Japanese Patent Application Laid-Open No. 6-137914 "Flow rate measuring device” [Problems to be Solved by the Present Invention]
  • the proportional feed pumps disclosed in Patent Document 1, Patent Document 2, and Patent Document 3 indicate that a "gear-type flow meter" is configured by functioning as a "weighing device”.
  • the housing 101 is equipped with a pair of left and right gears 102 and 102, and the pair of left and right gears 102 and 102 are rotationally driven to drive the hot melt adhesive HM. Is transferred from the inlet IN to the outlet OUT, the flow rate of the hot melt adhesive HM passing through the gear type flow meter is measured by measuring the rotation speed of the gear 102 with the proximity sensor 104.
  • the gear type flow meter 100 has the following drawbacks. ⁇ Need a precise gear.
  • a differential pressure type flow meter when measuring the flow rate of a viscous hot melt adhesive, a differential pressure type flow meter is applied in order to eliminate the above-mentioned drawbacks to improve the measurement accuracy of the hot melt adhesive flow meter.
  • the subject is to simplify the structure of the hot melt adhesive flowmeter. That is, it is an object of the present invention to apply a differential pressure type flow meter that measures the flow rate of a fluid to the flow rate measurement of a hot melt adhesive whose viscosity changes with temperature.
  • the present invention is a differential pressure type hot melt adhesive flow that has a measurement flow path and displays the flow rate by calculating the flow rate based on the pressure difference on both sides of the measurement flow path in a coating device using a viscous hot melt adhesive as a coating material.
  • Flow meter of differential pressure type hot melt adhesive The measurement flow path is composed of a flow measurement plate of a flat plate having a linear groove having a square cross section, and a plurality of flow measurement plates having different cross-sectional areas of the vertical groove.
  • a differential pressure type hot melt adhesive flow meter characterized in that the cross-sectional area of the measurement flow path of the flow rate measuring plate to be used is selected according to the viscosity of the hot melt adhesive used in the coating apparatus.
  • the flow rate can always be accurately measured by a differential pressure type flow meter by responding to a change in the viscosity of the hot melt adhesive used. Compared to a gear-type flow meter, accurate measurement can always be performed and the structure can be simplified.
  • FIG. A is a plan view
  • FIG. B is a vertical sectional view
  • the viscosity curve diagram of the hot melt adhesive which shows the relationship with the viscosity with respect to the melting temperature of a hot melt adhesive.
  • An example of selected numerical values for the survey flow path M of the flow measurement plate 1 is shown, where a is a plan view, b is a vertical cross-sectional view, and c is an individual flow measurement plate 1A, 1B, 1C, 1D, 1E. The selected numerical value is shown.
  • the product A specifications are shown with respect to the product specifications regarding the viscosity of the hot melt adhesive and the appropriate working temperature.
  • the product B specifications are shown.
  • the product C specifications are shown.
  • FIG. 9 is an explanatory diagram similar to FIG. 9 showing a second embodiment of the survey flow path of the flow rate measuring plate 1.
  • FIG. 9 is an explanatory diagram similar to FIG. 9 showing a third embodiment of the survey flow path of the flow rate measuring plate 1.
  • the differential pressure type hot melt adhesive flow meter A of the present invention will be described with reference to FIGS. 1 to 3.
  • the differential pressure type hot melt adhesive flow meter A is equipped with a flow rate measuring plate 1 between the flow meter mounting base 2 containing the heater 7 and the holding plate 3, so that the survey flow path M can be moved forward.
  • a chamber MA and a posterior chamber MB are formed.
  • a first pressure sensor 4 for the front chamber MA of the survey flow path M and a second pressure sensor 5 for the rear chamber MB of the survey flow path M are provided.
  • 6 is a sensor mounting plate and 8 is a temperature sensor.
  • the flow rate measuring plate 1 is a flat plate, the bottom surface of the holding plate 3 and the upper surface of the flow meter mounting base 2 are also flat plates, and the square groove formed in the flow rate measuring plate 1 makes the surveying flow path M.
  • the surveying flow path M is adapted to measure the flow rate of the viscous hot melt adhesive.
  • the surveying flow path M side of the anterior chamber MA is a flow path that converges toward the surveying flow path M.
  • the surveying flow path M side of the rear chamber MB is a flow path that diverges at a wide angle immediately after passing through the surveying flow path M.
  • the measured value P1 from the first pressure sensor 4 with respect to the anterior chamber MA of the surveying channel M and the measured value P2 from the second pressure sensor 5 with respect to the rear chamber MB of the surveying channel M. Is input to the flow rate calculation device 9.
  • the measured value P1 from the first pressure sensor 4 with respect to the front chamber MA of the survey flow path M is input.
  • the measured value P1 from the first pressure sensor 4 and the measured value P2 from the second pressure sensor 5 are input according to "Bernouy's theorem that the pressure difference P is proportional to the square of the flow rate Q". By doing so, the flow rate Q is calculated.
  • FIG. 4 is a viscosity curve of the hot melt adhesive showing the relationship between the viscosity of the hot melt adhesive and the melting temperature. It shows the viscosity with respect to the set melting temperature (120 degrees Celsius, 140 degrees Celsius, 160 degrees Celsius, 180 degrees Celsius) of the hot melt adhesive and the softening point where the hot melt shape changes from solid to liquid.
  • FIG. 5 shows an example of the survey flow path M of the flow rate measuring plate 1 in the viscosity range with respect to the set melting temperature (120 degrees Celsius, 140 degrees Celsius, 160 degrees Celsius, 180 degrees Celsius) of the hot melt adhesive. At some point, 500 cps. Or 5,000 cps.
  • the flow rate measuring plates 1A, 1B, 1C, 1D, and 1E are shown as the flow rate measuring plates 1 having the surveying flow path M corresponding to 2,000 cps. Measurement Viscosity Range QA --- Viscosity 500 to 2,000 cps.
  • FIG. 6 shows product specifications regarding the viscosity of the hot melt adhesive and the appropriate working temperature.
  • FIG. 6 shows the product A specifications, which have a viscosity of 3,250 mPa ⁇ S at a working temperature of 180 degrees Celsius, a viscosity of 5,800 mPa ⁇ S at a working temperature of 160 degrees Celsius, and a viscosity of 13,000 mPa ⁇ S at a working temperature of 140 degrees Celsius. .. FIG.
  • FIG. 7 shows the product B specifications, which have a viscosity of 2,700 mPa ⁇ S at a working temperature of 180 degrees Celsius, a viscosity of 69,800 mPa ⁇ S at a working temperature of 160 degrees Celsius, and a viscosity of 281,000 mPa ⁇ S at a working temperature of 140 degrees Celsius.
  • FIG. 8 shows the product C specifications, which have a viscosity of 1,380 mPa ⁇ S at a working temperature of 190 degrees Celsius, a viscosity of 2,400 mPa ⁇ S at a working temperature of 180 degrees Celsius, and a viscosity of 4,090 mPa ⁇ S at a working temperature of 170 degrees Celsius. ..
  • FIG. 5 shows the selection of the survey flow path M of the flow rate measuring plate 1.
  • a flow rate measuring plate having a measuring flow path M that conforms to the product specifications of the hot melt adhesive in the measuring flow path a plurality of flow rate measuring plates 1A, 1B, 1C, Either 1D or 1E will be selected.
  • the above-mentioned actual measurement examples 1, 2 and 3 have a viscosity range of 500 cps with respect to the set melting temperature (120 degrees Celsius, 140 degrees Celsius, 160 degrees Celsius, 180 degrees Celsius) of the hot melt adhesive. Or 5,000 cps. It is shown that the flow rate measurement with respect to the above can be performed by selecting and using a plurality of flow rate measurement plates 1A, 1B, 1C, 1D, and 1E having different structures of the survey flow path M.
  • a differential pressure type flow meter corresponding to a change in the viscosity of the hot melt adhesive used, and the gear.
  • a Differential pressure type hot melt adhesive flow meter M Survey flow path MA Front room MB Rear room 1 Flow measurement plate 2 Flow meter mounting base 4 1st pressure sensor 5 2nd pressure sensor 6 Sensor mounting plate 7 Heater 8 temperature sensor

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
PCT/JP2020/032493 2019-08-22 2020-08-17 差圧式ホットメルト接着剤流量計を装備するホットメルト接着剤塗布装置 WO2021033780A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2021540996A JPWO2021033780A1 (enrdf_load_stackoverflow) 2019-08-22 2020-08-17

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019164943 2019-08-22
JPJP2019-164943 2019-08-22

Publications (1)

Publication Number Publication Date
WO2021033780A1 true WO2021033780A1 (ja) 2021-02-25

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PCT/JP2020/032493 WO2021033780A1 (ja) 2019-08-22 2020-08-17 差圧式ホットメルト接着剤流量計を装備するホットメルト接着剤塗布装置

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61184922U (enrdf_load_stackoverflow) * 1985-05-09 1986-11-18
JPH01168827U (enrdf_load_stackoverflow) * 1988-05-18 1989-11-28
WO2006079669A1 (es) * 2004-12-21 2006-08-03 Melton, S.L. Sistema de aplicación de materiales termofusibles
JP2015531880A (ja) * 2012-09-19 2015-11-05 ノードソン コーポレーションＮｏｒｄｓｏｎ Ｃｏｒｐｏｒａｔｉｏｎ 流体用の計量装置
JP2017191090A (ja) * 2016-04-07 2017-10-19 日立金属株式会社 バイパスユニット、流量計用ベース、流量制御装置用ベース、流量計、及び流量制御装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2818083B2 (ja) * 1992-10-27 1998-10-30 矢崎総業株式会社 流量測定装置
JP2005291923A (ja) * 2004-03-31 2005-10-20 Ckd Corp 熱式流量計

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61184922U (enrdf_load_stackoverflow) * 1985-05-09 1986-11-18
JPH01168827U (enrdf_load_stackoverflow) * 1988-05-18 1989-11-28
WO2006079669A1 (es) * 2004-12-21 2006-08-03 Melton, S.L. Sistema de aplicación de materiales termofusibles
JP2015531880A (ja) * 2012-09-19 2015-11-05 ノードソン コーポレーションＮｏｒｄｓｏｎ Ｃｏｒｐｏｒａｔｉｏｎ 流体用の計量装置
JP2017191090A (ja) * 2016-04-07 2017-10-19 日立金属株式会社 バイパスユニット、流量計用ベース、流量制御装置用ベース、流量計、及び流量制御装置

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