EP3741468A1 - Appareil et procédé de pesée de la peinture appliquée à un panneau - Google Patents
Appareil et procédé de pesée de la peinture appliquée à un panneau Download PDFInfo
- Publication number
- EP3741468A1 EP3741468A1 EP20175889.3A EP20175889A EP3741468A1 EP 3741468 A1 EP3741468 A1 EP 3741468A1 EP 20175889 A EP20175889 A EP 20175889A EP 3741468 A1 EP3741468 A1 EP 3741468A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- paint
- panels
- detecting
- roller
- applying
- 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
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Classifications
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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
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/02—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to separate articles
- B05C1/025—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to separate articles to flat rectangular articles, e.g. flat sheets
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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
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0873—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work
- B05C1/0886—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work responsive to the condition of the work
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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
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0873—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work
- B05C1/0895—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work responsive to the thickness of the weight of material applied to the work
Definitions
- the present invention relates to an apparatus and a method to detect the quantity of paint applied to a product, preferably a mainly flat panel.
- a mainly flat panel means a panel wherein two of the three dimensions are much larger than the third dimension.
- the measures of such panels range 300x300x18 mm to 1250x2400x30 mm.
- the quality of the finished product depends on the thickness of the applied paint: the thicker the paint layer, the more the paint can mask possible defects of the basic material.
- the process for monitoring the quantity of paint applied to a panel comprises the following steps:
- the weighing method is quite complex, it is nonetheless easier than the direct measuring of the thickness of the applied film, which is extremely difficult to perform.
- an apparatus for applying paint on products using the roller technology is provided with a conveying system, on which panels to be painted are laying.
- the panels are brought near the application head, made of two rollers: a first chromed dosing roller and a second rubber applying roller.
- the paint is withdrawn from a tank through a pump, and conveyed to a tank formed by said pair of rollers, which are pressurized.
- the transposition of the paint from the applying roller onto the panel occurs through pressure.
- the quantity of paint is adjusted through the variation of the pressure applied by the dosing roller on the applying roller.
- a load cell system can be used, measuring the thrust force of the dosing roller into the applying roller. In this way, an indication exactly proportional to the variation of the applied paint weight is obtained.
- KR20170053901A of Daewoo Shipbuilding & Marine discloses a device and a method to evaluate the transfer efficiency of a spray-painting apparatus.
- Said apparatus comprises a weight measuring sensor, capable of measuring the variation of weight of the paint in a storage container.
- the method comprises the following steps: applying a paint coating to a test part according to a condition of spray painting to be evaluated; measuring a weight variation of the paint after the spray application; calculating the volume of the paint used for the application based on a weight variation of the paint and the density of the paint; drying the painted sample measuring the thickness of a dried paint film applied to the sample; inversely calculating the volume of a wet paint film before being dried considering a solid rate of the paint, and calculating the transfer efficiency of the paint based on the volume of the wet paint film and the volume of the paint used for the application.
- the weight of the paint required for each spray is pre-set by a controller; a weight sensor detects the weight of the paint in a first barrel in real time; the controller receives the weight parameter sent by the weight sensor, and compares the weight before and after spraying. If the weight difference is lower than the pre-set value, the controller opens a first solenoid valve; if it is higher, the controller reduces the opening of said solenoid valve, adjusting the quantity of applied paint.
- JP2001-038273 discloses an apparatus and a method for applying paint to panels by means of rollers comprising:
- This apparatus comprising e weighting device, which determines the weight of the entire apparatus, before and after applying the paint to the panels and which is calculates as the value of the reduction in weight of the paint.
- JP 2009 233616 discloses a control method for an apparatus comprising rollers for coating metal plates and which is able to prevent the deposition of an anomalous quantity of coating on said plates by means of a feed-back mechanism which determines the quantity of coating deposited on the said plates.
- a detecting bar typically comprises three basic elements:
- Aim of the present invention is providing an apparatus and a method for measuring the layer of paint applied to products, which is rapid, automated and cheap.
- the apparatus comprises a weight sensor applied to a paint tank, from which paint is withdrawn to apply it to said panel. Said sensor allows to evaluate the quantity of paint applied to one or more products. Moreover, said apparatus comprises a sensor capable of measuring the dimension of the panel when passing. Said parameters are sent to a control unit capable of processing them and calculate the quantity of paint applied to panels in the form of weight/surface.
- the method according to the present invention comprises the following steps:
- a first advantage of the present invention consists in the possibility of automating the process of weighing the paint applied to a panel, which can be performed in the production line, without stopping the production line, without the need for test panels, without dedicating a human operator to this operation.
- a second advantage of the present invention consists in the improved control of the industrial process of applying paint through roller technology.
- a third advantage comes from the fact that the apparatus to perform said method requires a minimum number of additional components with respect to the known art, which translates into an apparatus with a reasonable cost.
- Figure 1 shows an axonometric view of a painting production line 1, comprising a plurality of (not shown) apparatuses, among which there is provided an apparatus 2 for applying paint to products, using the roller technology.
- the bold arrow shows the feeding direction of the products in the production line.
- a panel 4 to be painted is conveyed to said apparatus 2 through a band conveyor 5. Before entering into said apparatus 2, said panel 4 is measured when passing by a detecting bar 3, which detects its top dimensions and sends them to a control unit.
- said panel is painted through rollers when passing; the Figure shows a painted panel 4V coming out from said apparatus 2.
- the roller technology used in this apparatus is known art, and therefore is not described in detail.
- the weight of applied paint through a roller apparatus is adjusted by varying the pressure of the dosing roller applied on the applying roller through a suitable slide, and using a manual or motorized jack.
- the position of the dosing roller with respect to the applying roller is detected through mechanical or digital position markers, detecting the change of position of the dosing roller in its translational motion toward the applying roller.
- Said position can be adjusted through a control unit, when said jacks are provided with a motor; conversely, on the screen of the control unit of the apparatus or of the production line, one can read the applied adjustment.
- a load cell system can be used, measuring the thrust force of the dosing roller into the applying roller. In this way, an indication exactly proportional to the variation of the applied paint weight is obtained.
- a tank containing the paint to be applied As customary in the known art roller apparatuses, in said apparatus 2 for applying paint through rollers, there is provided a tank containing the paint to be applied.
- FIG. 2 shows said tank 6 in a side and in a front view.
- Said tank is provided with a load cell 7, allowing to detect the weight variation due to paint withdrawal. This parameter, too, is sent to said control unit.
- the use of a load cell is advantageous in that it allows to obtain the weight in kilograms of the tank containing said paint.
- said tank is provided with a temperature-adjusting system of the paint contained inside it.
- said paint tank 6 is in the form of a first steel tank contained in a second tank, so that the gap is filled with diathermic oil, which is heated through an electrical resistance controlled by a pyrometer.
- the method according to the present invention comprises the following steps:
- the apparatus 2 for roller painting is adjusted with basic parameters taken from the experience of the human operator, or alternatively, when the painting apparatus is provided with automated positioning and working program recalling systems, recalling a working program containing all the necessary parameters.
- the temperature of the paint contained inside paint tank 6 is adjusted, in that, as explained, variations of paint viscosity can produce significant variations of the paint weight applied to panel 4.
- the software of the control unit can detect the signal coming from said detecting bar 3, and the signal of the weight of the paint contained in said tank 6 detected by said load cell 7, and process said data with the aim of obtaining the datum relative to the quantity of paint applied on panel 4V. Said parameter is shown on a screen 8 of said apparatus 2, or on a different (not shown) screen of said painting line 1.
- said screen can be a touch screen and therefore can be used both to read data, and to input the desired parameters into the painting apparatus 2 (paint temperature, transit speed of panels, quantity of paint to be applied, etc.).
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- Coating Apparatus (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT201900007159 | 2019-05-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3741468A1 true EP3741468A1 (fr) | 2020-11-25 |
Family
ID=67876029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20175889.3A Pending EP3741468A1 (fr) | 2019-05-23 | 2020-05-21 | Appareil et procédé de pesée de la peinture appliquée à un panneau |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP3741468A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114308508A (zh) * | 2021-12-06 | 2022-04-12 | 中国建筑第二工程局有限公司 | 一种高效的发泡陶瓷保温板用界面剂涂抹装置 |
| CN117019515A (zh) * | 2023-10-09 | 2023-11-10 | 常州润来科技有限公司 | 一种凹版涂胶装置及方法 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001038273A (ja) | 1999-08-02 | 2001-02-13 | Dainippon Ink & Chem Inc | 塗布量の測定方法および塗装装置 |
| EP2022568A2 (fr) * | 2007-08-07 | 2009-02-11 | GE.MA.TA. S.p.A. | Machine pour le vernissage et l'impression à dessin sur plaques rigides et planes |
| JP2009233616A (ja) | 2008-03-27 | 2009-10-15 | Nisshin Steel Co Ltd | 塗布装置の制御方法および塗布システム |
| KR20170053901A (ko) | 2015-11-09 | 2017-05-17 | 대우조선해양 주식회사 | 스프레이 도장의 도착효율 평가 장치 및 방법 |
| CN108704800A (zh) | 2018-07-27 | 2018-10-26 | 江苏省中跃涂装设备有限公司 | 一种高精度自动喷涂系统 |
-
2020
- 2020-05-21 EP EP20175889.3A patent/EP3741468A1/fr active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001038273A (ja) | 1999-08-02 | 2001-02-13 | Dainippon Ink & Chem Inc | 塗布量の測定方法および塗装装置 |
| EP2022568A2 (fr) * | 2007-08-07 | 2009-02-11 | GE.MA.TA. S.p.A. | Machine pour le vernissage et l'impression à dessin sur plaques rigides et planes |
| JP2009233616A (ja) | 2008-03-27 | 2009-10-15 | Nisshin Steel Co Ltd | 塗布装置の制御方法および塗布システム |
| KR20170053901A (ko) | 2015-11-09 | 2017-05-17 | 대우조선해양 주식회사 | 스프레이 도장의 도착효율 평가 장치 및 방법 |
| CN108704800A (zh) | 2018-07-27 | 2018-10-26 | 江苏省中跃涂装设备有限公司 | 一种高精度自动喷涂系统 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114308508A (zh) * | 2021-12-06 | 2022-04-12 | 中国建筑第二工程局有限公司 | 一种高效的发泡陶瓷保温板用界面剂涂抹装置 |
| CN117019515A (zh) * | 2023-10-09 | 2023-11-10 | 常州润来科技有限公司 | 一种凹版涂胶装置及方法 |
| CN117019515B (zh) * | 2023-10-09 | 2023-12-15 | 常州润来科技有限公司 | 一种凹版涂胶装置及方法 |
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