CN117621615A - An intelligent coating and printing system for thin films and an intelligent drying control method - Google Patents
An intelligent coating and printing system for thin films and an intelligent drying control method Download PDFInfo
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- CN117621615A CN117621615A CN202311497998.6A CN202311497998A CN117621615A CN 117621615 A CN117621615 A CN 117621615A CN 202311497998 A CN202311497998 A CN 202311497998A CN 117621615 A CN117621615 A CN 117621615A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/08—Machines
- B41F15/12—Machines with auxiliary equipment, e.g. for drying printed articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0036—Devices for scanning or checking the printed matter for quality control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses an intelligent coating printing system and an intelligent drying control method for a film, which belong to the technical field of coating and printing ink, and comprise an unreeling device, a coating printing device, a reeling device, a drying device, a control device and a detection device which are sequentially arranged; according to the method, the unprinted base material is dried on line through the drying device, meanwhile, the conveying efficiency of the unreeling device for conveying the base material and the ventilation temperature and ventilation quantity of the drying device are controlled in a coordinated mode according to the temperature and humidity of the base material before being dried, which are detected by the detecting device, so that the dried base material reaches ideal drying conditions, and the quality defect of products caused by the fact that coating materials or printing ink cannot be uniformly adhered to the surface of the base material is reduced. The intelligent coating printing system and the intelligent drying control method for the film can realize intelligent response to environmental changes, always ensure the drying effect of a base material and the highest efficiency of equipment, and effectively improve the production efficiency and the product qualification rate of the film.
Description
Technical Field
The invention belongs to the technical field of coating and ink printing, and particularly relates to an intelligent coating printing system and an intelligent drying control method for a film.
Background
In the film production process, a coating machine is generally utilized to coat a layer of glue, paint, ink and the like with specific functions on a coiled base material, and then the base material is cut into pieces or coiled after being sensed; or the printing machine is used for firstly mounting the character and image to be printed on the printing machine, then the printing ink is coated on the place where the character and image are on the printing plate, and then the printing ink is directly or indirectly transferred on paper or other base materials.
In the traditional film production process, the substrate is generally not dried when being coated or printed, most of printing ink and most of coating are dispersed in a hydrophobic solvent, when the air humidity is too high or the substrate has strong water absorption, the surface of the substrate can contain a certain amount of water, the adhesion effect is poor in the coating or printing process because the water on the surface of the substrate is incompatible with the coating or printing ink, bubbles are often generated on the surface of the printed product coating, cracks are generated on the surface of the coating, the apparent non-uniformity of the coating is caused, and finally, a certain degree of product quality defects are caused.
At present, although the substrate is put into the oven to be dried in a concentrated manner in advance, the production batch of the film is generally larger, the printing effect just started is better, however, as the exposure time of the dried substrate in the environment is increased, the substrate is easy to get damp, the printing effect is gradually deteriorated, the problem that the printing appearance does not reach the standard after a few hours is solved, continuous production cannot be realized, and the production efficiency is lower.
Disclosure of Invention
In view of one or more of the above drawbacks or improvements of the prior art, the present invention provides an intelligent coating printing system and intelligent drying control method for thin films, which can dry a substrate online to improve the printing effect of the product.
In order to achieve the above object, an aspect of the present invention provides an intelligent coating printing system for a film, which includes an unreeling device, a coating printing device, a reeling device, a drying device, a control device, and a detection device, which are sequentially arranged;
the drying device is arranged between the unreeling device and the coating printing device and comprises a drying chamber, an air inlet mechanism and an air outlet mechanism, and the air inlet mechanism is electrically connected with the control device;
the air inlet mechanism comprises a compressed air station and a heating assembly, wherein the output end of the compressed air station is communicated with the heating assembly so as to heat air output by the compressed air station through the heating assembly, and the output end of the heating assembly is communicated with the drying chamber so as to input the heated air into the drying chamber to dry the film substrate;
the air outlet mechanism is communicated with the drying chamber and is used for exhausting the drying chamber;
the detection device is arranged corresponding to the base material, is arranged between the unreeling device and the drying chamber, is used for detecting the temperature and the humidity of the base material before being dried, and is electrically connected with the control device;
and the unreeling device is electrically connected with the control device.
As a further improvement of the invention, the compressed air station comprises an air compressor, which is a variable frequency air compressor, to control the air flow by adjusting the output frequency of the air compressor;
and/or
The heating component is a variable-frequency heating component.
As a further improvement of the present invention, the apparatus further comprises a rotary shower nozzle disposed in the drying chamber and communicating with the output end of the heating assembly to uniformly disperse the heating gas on the surface of the substrate through the rotary shower nozzle.
As a further improvement of the present invention, a regulating valve is further provided between the rotary spray head and the output end of the heating assembly, so as to control communication between the heating assembly and the drying chamber through the regulating valve, and to control the air flux by controlling the opening degree of the regulating valve.
As a further development of the invention, the detection device comprises a temperature sensor and a humidity sensor, which are each electrically connected to the control device.
In another aspect of the present invention, an intelligent drying control method for an intelligent coating printing system for a thin film is provided, which is suitable for any one of the above intelligent coating printing systems, and inputs a substrate surface dew point calculation program and a mass transfer algorithm in a control device, and includes the following steps:
s100: the control device sets the output gas temperature Ts of the air inlet mechanism;
s200: detecting and feeding back the ambient temperature T of the substrate to the control device by using a temperature sensor; detecting the humidity of the surface of the substrate by using a humidity sensor and feeding back to a control device, wherein the control device outputs the water content of the unit area of the substrate according to the wettability curve of the surface of the substrate, and calculates the actually required transmission quality Qa of the surface of the substrate according to the water content of the unit area;
s300: the control device calculates a binary diffusion coefficient according to the output gas temperature Ts of the gas inlet mechanism, calculates a local convection mass transfer coefficient according to the binary diffusion coefficient, and calculates and obtains mass flow density according to the local convection mass transfer coefficient;
s400: the control device calculates the mass transfer quantity Qr of a unit drying surface according to the actual required mass transfer quantity Qa and the mass transfer contact surface area of the surface of the base material and the set conveying rate of the base material;
s500: calculating the actually required dry compressed air quantity Q, and outputting the air inlet frequency of an air inlet mechanism;
s600: the control device controls the unreeling device and the air inlet mechanism to operate according to the set and calculated values.
As a further improvement of the present invention, in step S100, the following steps are specifically included:
s110: acquiring a thermal deformation performance curve corresponding to the base material;
s120: obtaining the maximum temperature of the base material in the deformation range according to the heated deformation curve, and comparing the maximum temperature with the maximum temperature which can be realized by the air inlet mechanism as a critical temperature;
if the critical temperature is lower than the maximum temperature which can be realized by the air inlet mechanism, the output gas temperature Ts of the air inlet mechanism is equal to the critical temperature value;
if the critical temperature is higher than the maximum temperature that can be achieved by the air intake mechanism, the output gas temperature Ts of the air intake mechanism is equal to the maximum temperature that can be achieved by the air intake system.
As a further improvement of the present invention, in step S500, if the output air intake frequency of the air intake mechanism is greater than the maximum frequency allowed by the air intake mechanism, Q is the amount of dry compressed air available at the maximum frequency of the air intake mechanism, and the conveying rate of the desired substrate is reversely deduced therefrom.
As a further improvement of the present invention, in step S500, the dry compressed air amount Q and Qr have the following relationship:
Q＝Qr×I
wherein I is a correction coefficient.
The above-mentioned improved technical features can be combined with each other as long as they do not collide with each other.
In general, the above technical solutions conceived by the present invention have the beneficial effects compared with the prior art including:
(1) The intelligent coating printing system for the film and the intelligent drying control method are characterized in that a drying device, a control device and a detection device are arranged in the intelligent coating printing system, so that an unprinted base material is dried on line through the drying device, meanwhile, the control device is used for controlling the conveying efficiency of a conveying base material of an unreeling device and the ventilation temperature and ventilation quantity of the drying device according to the temperature and humidity coordination of the base material before being dried, which are detected by the detection device, so that the dried base material reaches ideal drying conditions, and the product quality defect caused by the fact that coating materials or printing ink cannot be uniformly adhered on the surface of the base material is reduced.
(2) The intelligent coating printing system and the intelligent drying control method for the film are characterized in that the output end of the heating assembly is communicated with the rotary spray head, so that heating gas is uniformly dispersed on the surface of a substrate through the rotary spray head, and the drying uniformity of the substrate is improved.
(3) The intelligent coating printing system and the intelligent drying control method for the film can realize intelligent coping with environmental changes, always ensure the drying effect of the base material and the highest efficiency of equipment, solve the technical defect of poor adhesion effect caused by incompatibility of the water on the surface of the base material and the paint or the ink in the coating or printing process due to the fact that the surface of the base material contains a certain amount of water in the traditional technology, and ensure the stable and continuous operation of the equipment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of an intelligent coating printing system and intelligent drying control method for thin films in an embodiment of the invention;
like reference numerals denote like technical features throughout the drawings, in particular: 1. an unreeling device; 2. a humidity sensor; 3. a temperature sensor; 4. a compressed air station; 5. a heating assembly; 6. a valve body; 7. rotating the spray head; 8. a drying chamber; 9. a screen printing device; 10. a winding device; 11. a substrate; 12. an air inlet mechanism; 13. and an air outlet mechanism.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Examples:
referring to fig. 1, the intelligent coating printing system for thin films in the preferred embodiment of the present invention includes a control device, an unreeling device 1, a detecting device and a drying device. The unreeling device 1, the detecting device and the drying device are respectively connected with the control device, so that the control device can set the operation parameters of the devices to control the cooperation operation of the devices.
Specifically, as shown in fig. 1, the base material 11 in the preferred embodiment is stored in a roll on the unreeling device 1, and the base material 11 is unreeled and fed by the unreeling device 1. Preferably, the unreeling device 1 is provided with a variable frequency driving device in a matching way and is connected with a control device so as to control the unreeling speed of the unreeling device 1 and further control the conveying speed of the base material 11 through the control device.
Preferably, a detecting device is further provided corresponding to the substrate 11 to detect the temperature and humidity of the undried substrate 11 on line, and the detecting device is connected with the control device to transmit the detection result to the control device. As shown in fig. 1, the detecting device in the preferred embodiment includes a humidity sensor 2 and a temperature sensor 3 to detect the temperature of the substrate 11 and the surface humidity of the substrate 11, respectively, and transmit the detected real-time temperature value and humidity value to the control device.
Further, the substrate 11 in the preferred embodiment is drawn to a drying device after being unwound by the unwinding device 1 to dry the substrate 11 by the drying device.
As shown in fig. 1, the drying apparatus in the preferred embodiment includes a drying chamber 8, an air inlet mechanism 12, and an air outlet mechanism 13, wherein the drying chamber 8 is disposed downstream of the unreeling device 1, and pulls the substrate 11 unreeled by the unreeling device 1 into the drying chamber 8.
Accordingly, the air inlet mechanism 12 and the air outlet mechanism 13 are respectively communicated with the drying chamber 8, so that heated air is introduced into the drying chamber 8 through the air inlet mechanism 12, the substrate 11 pulled into the drying chamber 8 is dried, and the air in the drying chamber 8 is discharged through the air outlet mechanism 13.
Further, as shown in fig. 1, the air intake mechanism 12 includes a compressed air station 4 and a heating assembly 5, wherein an output end of the compressed air station 4 communicates with the heating assembly 5 to heat the compressed air output from the compressed air station 4 by the heating assembly 5; accordingly, the output end of the heating assembly 5 communicates with the drying chamber 8 to output heated air into the drying chamber 8 to dry the substrate 11.
The heating assembly 5 in the preferred embodiment comprises a pipe and a number of heating elements arranged in the pipe, into which air output via the compressed air station 4 enters and via which it is heated before being fed into the drying chamber 8. Preferably, the heating element is a variable frequency heating element and is connected with the control device so as to heat the compressed air to a specified temperature according to actual requirements.
Preferably, a valve body 6 is provided in the heating assembly 5 corresponding to the output of the heating gas to control the communication of the heating assembly 5 with the drying chamber 8 through the valve body 6.
Preferably, the compressed air station 4 comprises an air compressor, further preferably a variable frequency air compressor, which can provide dry compressed air free of oil, dew point-50 ℃; the valve body 6 is set to be a switch valve, and meanwhile, the compressed air station 4 is connected with the control device, so that the output frequency of the compressed air station 4 is controlled through the control device, the gas quantity heated by the heating component 5 is controlled, the gas flux input into the drying chamber 8 is further controlled, the gas is heated according to the actual demand, and the waste of heated gas is reduced.
Of course, the valve body 6 may be provided as a regulating valve, and the regulating valve may be connected to a control device to control the air flow rate input into the drying chamber 8 by controlling the opening degree of the regulating valve.
Preferably, at least one rotary spray head 7 is further disposed in the drying chamber 8 and is in communication with the output end of the heating assembly 5, so as to uniformly disperse the heating gas onto the substrate 11 through the rotary spray head 7, thereby ensuring that the surface of the substrate 11 can be sprayed, and improving the drying uniformity of the substrate 11.
Further, the dried substrate 11 is fed to a coating and printing device for coating or printing, in the preferred embodiment, a screen printing device 9, and the coated or printed film is wound up by a winding device 10 to complete the production of the film.
Further, the invention combines the actual temperature and humidity of the base material 11 before being dried, and carries out coordinated control on the relevant output parameters of the unreeling device 1 and the air inlet mechanism 12 through the control system so as to improve the drying efficiency and the drying quality.
Further, in a preferred embodiment, a substrate surface dew point calculation program and a mass transfer algorithm are provided in the control device to set and calculate the operation parameters of each device controlled by the control device, and the control method of the intelligent control system of the present invention includes, but is not limited to, the following steps:
s100: the control device sets the output gas temperature Ts of the intake mechanism 12;
in the preferred embodiment, the thermal deformation performance curves of different types of substrates 11 are stored in the control device, and in actual production, after the substrate 11 is selected, the control device automatically matches and reads the thermal deformation performance curve of the corresponding substrate 11, and obtains the maximum temperature of the substrate 11 in the deformation range, and compares the maximum temperature with the maximum temperature capable of being achieved by the air inlet mechanism 12 as the critical temperature, and outputs the temperature Ts; if the critical temperature is lower than the maximum temperature which can be realized by the air inlet mechanism, ts is the critical temperature of the base material in the deformation range; if the critical temperature is higher than the maximum temperature that can be achieved by the air intake mechanism, ts is the maximum temperature that can be achieved by the air intake mechanism.
S200: detecting and feeding back the ambient temperature T of the substrate to the control device by using a temperature sensor; detecting the humidity of the surface of the substrate by using a humidity sensor and feeding back to a control device, wherein the control device outputs the water content of the unit area of the substrate according to the wettability curve of the surface of the substrate, and calculates the actually required transmission quality Qa of the surface of the substrate according to the water content of the unit area;
in a preferred embodiment, the control device stores the surface wettability curves of different types of substrates 11, and in actual production, the corresponding surface wettability curves are read according to the type of the substrate 11 to be dried.
S300: the control device calculates a binary diffusion coefficient according to the output gas temperature Ts of the gas inlet mechanism, calculates a local convection mass transfer coefficient according to the binary diffusion coefficient, and calculates and obtains mass flow density according to the local convection mass transfer coefficient;
in one embodiment of the present invention, the binary diffusion coefficient D, pressure P and temperature T at one atmosphere have the following relationship:
D AB ∝P -1 T 3/2
at normal temperature T of 298K, assuming that the gas output temperature value Ts obtained in step S100 in the present embodiment is 319K, then
D AB (319K)＝D AB(298K) ×(319K/298K) 3/2 ＝0.288×10 -4 m 2 /s
Further, the local convective mass transfer coefficient h m,x And a binary diffusion coefficient D AB The following relationship exists:
wherein ρ is A Is the mass density of the water vapor; y is the distance in the mass transfer direction; ρ A,S The mass density of water vapor for the substrate contact surface; ρ A,∞ To mass density of water vapor in compressed air
When the output heated gas is regarded as ideal gas, P A ＝ρ A RT, isothermal conditions:
wherein P is A,S P being the pressure of the substrate contact surface A,∞ For compressing airPressure.
Then:
and then getFurther deriving the mass flow density n A ”
n” A ＝h m (P A,S -P A,∞ )＝h m M A (C A,S -C A,∞ )＝0.0096m/s·18.0152kg/mol(0.655mol/m 3 )
＝1.133×10 -3 kg/m 2 ·s
Wherein: m is M A Is the molecular weight of water vapor; c (C) A,S The method comprises the following steps: contact surface molar concentration; c (C) A,∞ Is the molar concentration of the compressed air.
S400: the control device calculates the mass transfer quantity Qr of a unit drying surface according to the actual required mass transfer quantity Qa and the mass transfer contact surface area of the surface of the base material and the set conveying rate of the base material;
in the preferred embodiment of the present invention, the mass transfer amount Qr per dry surface is calculated under the condition that the transport rate of the default base material 11 is the maximum driving rate that the system can provide;
the mass transfer quantity Qr per dry surface and the transport rate of the base material 11 have the following relationship:
in the formula, L is the length of the drying surface of the substrate; w is the width of the dry surface of the substrate; v is the transport rate of the substrate 11.
S500: calculating the actually required dry compressed air quantity Q and outputting the air inlet frequency of a corresponding air inlet mechanism;
the actually required dry compressed air amounts Q and Qr have the following relationship:
Q＝Qr×I
wherein, I is a correction coefficient, I is proportional to Qa, and in actual use, the linear correlation between Q and Qr can be fitted through experimental data.
When the output frequency is greater than the maximum frequency that the compressed air station 4 is allowed to output, Q is the amount of dry compressed air that can be provided per unit time at the maximum frequency of the compressed air station 4, and thus the transport rate of the substrate 11 is reversely deduced.
S600: the control device controls the unreeling device and the air inlet mechanism to operate according to the set and calculated values.
The intelligent coating printing system is applied to the production of film products, such as the production of 15 mu PET films, the direct rate of product printing is improved from original 65.8% to current 89.5%, and the proportion of product quality defects in unqualified products caused by insufficient drying of the surface of a base material is reduced to 2% from original 72.01%; the production efficiency of the equipment is improved from 2000 m/8 h to 4000 m/8 h, and the production efficiency is improved by 100%.
The intelligent coating printing system and the intelligent drying control method for the film can effectively dry the film substrate, so that the printing effect is not affected by weather change in the film production process, the difference between the coating effect of the end of the substrate and the coating effect of the tail end is avoided, the printing stability is good, the product through rate is high, the production efficiency of the product is effectively improved, and the intelligent coating printing system and the intelligent drying control method for the film have good application prospect and popularization value.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (9)
1. The intelligent coating printing system for the film comprises an unreeling device, a coating printing device and a reeling device which are sequentially arranged, and is characterized by further comprising a drying device, a control device and a detection device;
the drying device is arranged between the unreeling device and the coating printing device and comprises a drying chamber, an air inlet mechanism and an air outlet mechanism, and the air inlet mechanism is electrically connected with the control device;
the air inlet mechanism comprises a compressed air station and a heating assembly, wherein the output end of the compressed air station is communicated with the heating assembly so as to heat air output by the compressed air station through the heating assembly, and the output end of the heating assembly is communicated with the drying chamber so as to input the heated air into the drying chamber to dry the film substrate;
the air outlet mechanism is communicated with the drying chamber and is used for exhausting the drying chamber;
the detection device is arranged corresponding to the base material, is arranged between the unreeling device and the drying chamber, is used for detecting the temperature and the humidity of the base material before being dried, and is electrically connected with the control device;
and the unreeling device is electrically connected with the control device.
2. The intelligent coating printing system for thin films according to claim 1, wherein the compressed air station comprises an air compressor, the air compressor being a variable frequency air compressor to control air flow by adjusting an output frequency of the air compressor;
and/or
The heating component is a variable-frequency heating component.
3. The intelligent coating printing system for thin films of claim 1, further comprising a rotary spray head disposed within the drying chamber and in communication with the output of the heating assembly to uniformly disperse heated gas across the surface of the substrate through the rotary spray head.
4. The intelligent coating printing system for thin films according to claim 3, wherein a regulating valve is further provided between the rotary spray head and the output end of the heating assembly, so as to control communication between the heating assembly and the drying chamber through the regulating valve, and to control air flux through controlling the opening degree of the regulating valve.
5. The intelligent coating printing system for thin films according to any one of claims 1 to 4, wherein the detection means comprises a temperature sensor and a humidity sensor, which are electrically connected to the control means, respectively.
6. An intelligent drying control method for an intelligent coating printing system of a film, which is suitable for the intelligent coating printing system of any one of claims 1 to 5, and inputs a substrate surface dew point calculation program and a mass transfer algorithm in a control device, and comprises the following steps:
s100: the control device sets the output gas temperature Ts of the air inlet mechanism;
s200: detecting and feeding back the ambient temperature T of the substrate to the control device by using a temperature sensor; detecting the humidity of the surface of the substrate by using a humidity sensor and feeding back to a control device, wherein the control device outputs the water content of the unit area of the substrate according to the wettability curve of the surface of the substrate, and calculates the actually required transmission quality Qa of the surface of the substrate according to the water content of the unit area;
s300: the control device calculates a binary diffusion coefficient according to the output gas temperature Ts of the gas inlet mechanism, calculates a local convection mass transfer coefficient according to the binary diffusion coefficient, and calculates and obtains mass flow density according to the local convection mass transfer coefficient;
s400: the control device calculates the mass transfer quantity Qr of a unit drying surface according to the actual required mass transfer quantity Qa and the mass transfer contact surface area of the surface of the base material and the set conveying rate of the base material;
s500: calculating the actually required dry compressed air quantity Q, and outputting the air inlet frequency of an air inlet mechanism;
s600: the control device controls the unreeling device and the air inlet mechanism to operate according to the set and calculated values.
7. The intelligent drying control method for intelligent coating printing system for thin film according to claim 6, wherein in step S100, the method specifically comprises the steps of:
s110: acquiring a thermal deformation performance curve corresponding to the base material;
s120: obtaining the maximum temperature of the base material in the deformation range according to the heated deformation curve, and comparing the maximum temperature with the maximum temperature which can be realized by the air inlet mechanism as a critical temperature;
if the critical temperature is lower than the maximum temperature which can be realized by the air inlet mechanism, the output gas temperature Ts of the air inlet mechanism is equal to the critical temperature value;
if the critical temperature is higher than the maximum temperature that can be achieved by the air intake mechanism, the output gas temperature Ts of the air intake mechanism is equal to the maximum temperature that can be achieved by the air intake system.
8. The intelligent drying control method for intelligent coating printing system for thin film according to claim 6, wherein in step S500, if the air intake frequency of the output air intake mechanism is greater than the maximum frequency allowed by the air intake mechanism, Q is the amount of dry compressed air available at the maximum frequency of the air intake mechanism, and thereby reversely deducing the transport rate of the desired substrate.
9. The intelligent drying control method for intelligent coating printing system for thin film according to claim 6, wherein in step S500, the dry compressed air quantity Q and Qr have the following relationship:
Q＝Qr×I
wherein I is a correction coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311497998.6A CN117621615B (en) | 2023-11-09 | A smart coating and printing system for thin films and a smart drying control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311497998.6A CN117621615B (en) | 2023-11-09 | A smart coating and printing system for thin films and a smart drying control method |
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| CN117621615A true CN117621615A (en) | 2024-03-01 |
| CN117621615B CN117621615B (en) | 2026-03-27 |
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| CN213973071U (en) * | 2020-09-27 | 2021-08-17 | 苏州新之彩机电设备有限公司 | Screen printing ink curing dryer |
| CN215676154U (en) * | 2021-08-06 | 2022-01-28 | 山东清华金属制品有限公司 | Wire drying equipment for welding wire production |
| CN115968333A (en) * | 2020-08-24 | 2023-04-14 | 瑞士克罗诺泰克股份公司 | Method and device for printing workpiece surface with decoration |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211105964U (en) * | 2019-10-12 | 2020-07-28 | 吉林省鹏瑞实业(集团)有限公司 | Printing device for woven bag production line |
| CN110712426A (en) * | 2019-10-30 | 2020-01-21 | 广东佳雅实业有限公司 | Integrated label printing equipment |
| CN213321110U (en) * | 2020-07-24 | 2021-06-01 | 安徽国风塑业股份有限公司 | Polyester chip crystallization drying equipment for PET film production line |
| CN115968333A (en) * | 2020-08-24 | 2023-04-14 | 瑞士克罗诺泰克股份公司 | Method and device for printing workpiece surface with decoration |
| CN213973071U (en) * | 2020-09-27 | 2021-08-17 | 苏州新之彩机电设备有限公司 | Screen printing ink curing dryer |
| CN215676154U (en) * | 2021-08-06 | 2022-01-28 | 山东清华金属制品有限公司 | Wire drying equipment for welding wire production |
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