CN116330817A - Temperature control system and control method for oven of intaglio printing press - Google Patents
Temperature control system and control method for oven of intaglio printing press Download PDFInfo
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- CN116330817A CN116330817A CN202310533008.3A CN202310533008A CN116330817A CN 116330817 A CN116330817 A CN 116330817A CN 202310533008 A CN202310533008 A CN 202310533008A CN 116330817 A CN116330817 A CN 116330817A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000007639 printing Methods 0.000 title claims description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 258
- 238000001035 drying Methods 0.000 claims abstract description 15
- 238000012423 maintenance Methods 0.000 claims abstract description 15
- 238000007646 gravure printing Methods 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims description 33
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000000977 initiatory effect Effects 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 238000005485 electric heating Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F9/00—Rotary intaglio printing presses
- B41F9/06—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
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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 a temperature control system of an oven of a gravure printing machine and a control method thereof, wherein the temperature control system comprises an oven body arranged in a drying chamber, an exhaust device and an auxiliary heating module arranged in the oven body, the auxiliary heating module comprises an auxiliary control switch and an auxiliary heating pipe which are mutually connected, the auxiliary heating module comprises a control module, a temperature sensor module and a main heating module arranged in the oven body, the temperature sensor module is in signal connection with the control module, and the control module is respectively connected with the main heating module and the auxiliary heating module. The main heating module capable of being adjusted in a temperature control mode is added in the existing constant-temperature heating system, the system temperature control mode is divided into the main heating mode and the mixed heating mode, the whole temperature of the system can be adjusted according to environmental conditions, the service life of a heating pipe is prolonged, the temperature control is more accurate, unnecessary energy loss is reduced, the maintenance cost is reduced, and the yield of printed matters is improved.
Description
Technical Field
The invention relates to a temperature control system and a control method thereof, in particular to a temperature control system and a control method thereof for an oven of a gravure printing machine, and belongs to the technical field of floor film drying.
Background
In the intaglio printing process, the drying of the printing ink is an important link, and the quality of the drying effect directly influences the quality and the printing speed of the printed matter.
At present, in the drying system of most printing ink, the contact control mode of an alternating current contactor and a solid state relay is directly used, because the constant temperature is provided in the mode, the drying temperature which needs to be provided by an electric heating pipe cannot be adjusted according to the temperature of the current working environment, the problems that the energy consumption is high and the temperature control is inaccurate when the drying temperature is smaller but the drying temperature is higher are solved, the damage rate of the electric heating pipe can be increased because the temperature is uncontrollable, and if the electric heating pipe is damaged due to overload in the processing process, the printing material processed on the machine cannot be dried, so that the yield and the drying effect of the printing material are greatly reduced, and the maintenance cost is improved.
Disclosure of Invention
The invention aims to: according to the invention, a main heating module capable of being adjusted in a temperature control manner is added into the existing constant-temperature heating system, so that the overall temperature of the system can be adjusted according to environmental conditions, the service life of a heating pipe is prolonged, the temperature control is more accurate, unnecessary energy loss is reduced, the maintenance cost is reduced, and the yield of printed matters is improved.
The technical scheme is as follows: the utility model provides a gravure press oven temperature control system, includes the oven body of installing in the drying chamber, exhaust device and installs the auxiliary heating module in the oven body, auxiliary heating module includes interconnect's auxiliary control switch and auxiliary heating pipe, including control module, temperature sensor module, installs the main heating module in the oven body, temperature sensor module and control module signal connection, control module is connected with main heating module and auxiliary heating module respectively.
According to the invention, the set target temperature value of the printed matter and the temperature of the current working environment are collected by the temperature sensor module and sent to the control module to set the target heating temperature value of the oven, the main heating mode or the mixed heating mode is selected to be used according to the set target heating temperature value of the oven, the control module starts the main heating module and the auxiliary heating module of the corresponding modes according to the selected heating mode, and the temperature sensor module sends the collected actual heating temperature of the oven to the control module to process together with the target heating temperature value of the oven to obtain the corresponding temperature deviation value delta T, and then the heating temperature is regulated according to the regulating signal converted by the temperature deviation value delta T, so that the whole temperature of the system can be regulated according to the environment conditions, the service life of the heating pipe is prolonged, the temperature control is more accurate, the unnecessary energy loss is reduced, the maintenance cost is reduced, and the yield of the printed matter is improved.
Preferably, in order to select a heating mode and perform temperature adjustment, the control module includes a target temperature setting unit, a storage unit, a mode selecting unit, a control unit, and a parameter processing unit; the target temperature setting unit sends the target temperature value of the printed matter to the storage unit, the storage unit sends the target heating temperature value of the oven to the mode selection unit, and the mode selection unit sends the mode selection result to the control unit; the parameter processing unit sends a target heating temperature value of the oven and a temperature deviation value delta T of the actual heating temperature of the oven to the control unit.
The target temperature setting unit sends a target temperature value of the printed matter to the storage unit, the storage unit obtains a target heating temperature value of the oven according to the target temperature value of the printed matter and the temperature value of the current working environment acquired by the temperature sensor module, the storage unit sends the target heating temperature value of the oven to the mode selection unit, the mode selection unit selects a main heating mode or a mixed heating mode according to the target heating temperature value of the oven, and a signal of a selection result is sent to the control unit; the control unit starts the selected heating mode, and the parameter processing unit obtains a temperature deviation value delta T according to the target heating temperature value of the oven and the actual heating temperature of the oven acquired by the temperature sensor module, converts the temperature deviation value delta T into an adjustment signal and then sends the adjustment signal to the control unit for temperature adjustment.
Preferably, in order to collect the actual heating temperature of the oven and the temperature of the current working environment, the temperature sensor module comprises an environment temperature sensor and an oven temperature sensor which are respectively connected with the control module in a signal manner. The use of the environmental temperature sensor and the oven temperature sensor can enable operators to set target heating temperature values of the oven without manually predicting the temperature, so that the processing is more intelligent, the manpower is saved, and the temperature is controlled more accurately.
Preferably, in order to adjust the output power and the drying temperature of the main heating module, the main heating module comprises a voltage regulating switch and a main heating pipe, and the control module controls the power of the main heating pipe through the voltage regulating switch.
Preferably, in order to monitor the circuit in the running process of the system, current sensors are arranged in the circuits of the main heating pipe and the auxiliary heating pipe, and the current sensors are in signal connection with the control module. The damage degree of the electric heating pipe is detected through circuit detection, so that accident potential is eliminated, high maintenance cost is effectively avoided, and production loss is reduced.
Preferably, in order to timely remind an operator of the system failure, the control module further comprises a failure alarm unit.
A control method of a temperature control system of an oven of a gravure printing machine comprises the following steps:
s1: the system starts the front working: starting an exhaust device; s2 is entered;
s2: setting a target temperature value of a printed matter: starting a control system, setting a target temperature value of the printed matter through a target temperature setting unit, and sending the target temperature value of the printed matter to a storage unit by the target temperature setting unit; s3, entering;
s3: setting a target heating temperature value of the oven: the environment temperature sensor collects the temperature of the current working environment and sends the temperature to the storage unit, and the storage unit obtains a target heating temperature value of the oven according to the target temperature value of the printing product set in the step S2 and the temperature of the current working environment; s4, entering a step S;
s4: selection of a heating mode:
a main heating mode in which the main heating module alone heats,
a hybrid heating mode in which the main heating module and the auxiliary heating module heat simultaneously;
the storage unit sends the target heating temperature value of the oven obtained in the step S3 to the mode selection unit, the mode selection unit selects a main heating mode or a mixed heating mode according to the target heating temperature value of the oven, and a signal of a selection result is sent to the control unit; s5, entering;
s5: the system operates: the control unit starts the heating mode selected in the step S4, the actual heating temperature of the oven at the air outlet of the air exhaust device is acquired by the oven temperature sensor and sent to the parameter processing unit, the parameter processing unit obtains a temperature deviation value delta T according to the target heating temperature value of the oven obtained in the step S3 and the actual heating temperature of the oven, and the parameter processing unit converts the temperature deviation value delta T into an adjusting signal and then sends the adjusting signal to the control unit for temperature adjustment; s6, entering a step S;
s6: and (3) finishing: the temperature control system is firstly closed, and the exhaust device is closed after the baking oven is cooled.
According to the invention, the target heating temperature value of the oven is obtained by setting the target printing temperature value and the target printing temperature value, the main heating mode or the mixed heating mode is selected to be used according to the target heating temperature value of the oven, in order to realize temperature control adjustment in the system operation process, the temperature deviation value delta T obtained by the target heating temperature value of the oven and the actual heating temperature of the oven is converted into an adjustment signal and then sent to the control unit, the control unit adjusts the corresponding mode temperature, and because the auxiliary heating module is used for constant-temperature heating, only the power of the main heating pipe of the main heating module is required to be adjusted, so that the whole temperature of the system can be adjusted according to the environmental conditions, the temperature control is more accurate, the service life of the heating pipe is prolonged, the unnecessary energy loss is reduced, the maintenance cost is reduced, and the yield of the printed matter is improved.
Preferably, for selecting the heating mode, the specific step of S4 is as follows:
starting conditions of the main heating mode: when the target heating temperature value of the oven is smaller than or equal to the target heating temperature value of the printing product, the mode selection unit selects the main heating module to be used, a signal of a selection result is sent to the control unit, and the control unit starts the main heating module;
conditions for mixed heating mode initiation: when the target heating temperature value of the oven is larger than the target heating temperature value of the printed matter, the mode selection unit selects to simultaneously use the main heating module and the auxiliary heating module, signals of selection results are sent to the control unit, and the control unit simultaneously starts the main heating module and the auxiliary heating module.
The method comprises the following steps that in order to detect the damage degree of an electric heating pipe, eliminate accident hidden trouble and reduce maintenance cost and production loss, the S5 system comprises circuit monitoring in the operation process, the current sensor transmits load current change to the parameter processing unit, the parameter processing unit judges load symmetry according to three-phase current so as to judge whether the heating pipe is faulty, if so, the parameter processing unit sends a signal to the control unit, and the control unit starts a fault alarm unit and stops maintenance; if no fault exists, the temperature control system is closed after the processing is finished, and the exhaust device is closed after the baking oven is cooled.
The beneficial effects are that: according to the invention, the set target temperature value of the printed matter and the temperature of the current working environment are collected by the temperature sensor module and sent to the control module to set the target heating temperature value of the oven, the main heating mode or the mixed heating mode is selected to be used according to the set target heating temperature value of the oven, the control module starts the main heating module and the auxiliary heating module of the corresponding modes according to the selected heating mode, the temperature sensor module sends the collected actual heating temperature of the oven to the control module to process together with the target heating temperature value of the oven to obtain the corresponding temperature deviation value delta T, and then the heating temperature is regulated according to the regulating signal converted by the temperature deviation value delta T, so that the whole temperature of the system can be regulated according to the environmental conditions, and in order to detect the damage degree of the electric heating pipe, the hidden trouble is eliminated, the production loss of maintenance cost is reduced, the current sensor is arranged in the circuits of the main heating pipe and the auxiliary heating pipe, so that whether the heating pipe is in fault is monitored, the service life of the heating pipe is prolonged, the temperature control is more accurate, the unnecessary energy loss is reduced, the maintenance cost is reduced, and the yield of printed matter is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is an overall view of the external structure of the present invention;
FIG. 2 is a flow chart of a heating process of the present invention;
FIG. 3 is a flow chart of the temperature regulation of the present invention;
fig. 4 is a flowchart of a control method of the oven temperature control system of the intaglio printing press according to the present invention.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
As shown in fig. 1, the temperature control system of the oven of the intaglio printing press comprises an oven body 2 installed in a drying chamber 1, an exhaust device 3 and an auxiliary heating module 21 installed in the oven body 2, wherein the auxiliary heating module 21 comprises an auxiliary control switch 211 and an auxiliary heating pipe 212 which are mutually connected, the auxiliary heating system comprises a control module 4, a temperature sensor module 5 and a main heating module 22 installed in the oven body 2, the temperature sensor module 5 is in signal connection with the control module 4, and the control module 4 is respectively connected with the main heating module 22 and the auxiliary heating module 21.
The set target temperature value of the printed matter and the temperature of the current working environment are collected by the temperature sensor module 5 and sent to the control module 4 to set the target heating temperature value of the oven, the main heating mode or the mixed heating mode is selected to be used according to the set target heating temperature value of the oven, the control module 4 starts the main heating module 22 and the auxiliary heating module 21 of the corresponding modes according to the selected heating mode, the temperature sensor module 5 sends the collected actual heating temperature of the oven to the control module 4 to be processed together with the target heating temperature value of the oven, a corresponding temperature deviation value delta T is obtained, and then the heating temperature is adjusted according to an adjusting signal converted by the temperature deviation value delta T, so that the overall temperature of the system can be adjusted according to the environment conditions, the service life of a heating pipe is prolonged, the temperature control is more accurate, unnecessary energy loss is reduced, the maintenance cost is reduced, and the yield of the printed matter is improved.
As shown in fig. 2 and 3, in order to select a heating mode and perform temperature adjustment, the control module 4 includes a target temperature setting unit 41, a storage unit 42, a mode selecting unit 43, a control unit 44, and a parameter processing unit 45; the target temperature setting unit 41 sends the target temperature value of the printed matter to the storage unit 42, the storage unit 42 sends the target heating temperature value of the oven to the mode selecting unit 43, and the mode selecting unit 43 sends the mode selecting result to the control unit 44; the parameter processing unit 45 sends the target heating temperature value of the oven and the temperature deviation value Δt of the actual heating temperature of the oven to the control unit 44.
The target temperature setting unit 41 sends the target temperature value of the printed matter to the storage unit 42, the storage unit 42 sends the target heating temperature value of the oven to the mode selecting unit 43 according to the target heating temperature value of the oven and the target heating temperature value of the current working environment acquired by the temperature sensor module 5, the mode selecting unit 43 selects a main heating mode or a mixed heating mode according to the target heating temperature value of the oven, and a signal of the selected result is sent to the control unit 44; the control unit 44 starts the selected heating mode, and the parameter processing unit 45 obtains a temperature deviation value deltat according to the target heating temperature value of the oven and the actual heating temperature of the oven acquired by the temperature sensor module 5, converts the temperature deviation value deltat into an adjustment signal, and sends the adjustment signal to the control unit 44 for temperature adjustment. The control module 4 of the invention adopts the PLC control module 4 for control.
For acquiring the actual heating temperature of the oven and the temperature of the current working environment, the temperature sensor module 5 comprises an ambient temperature sensor 51 and an oven temperature sensor 52 which are respectively connected with the control module 4 in a signal manner. The use of the ambient temperature sensor 51 and the oven temperature sensor 52 can make it unnecessary for an operator to manually predict the temperature to set the target heating temperature value of the oven, so that the processing is more intelligent, the labor is saved, and the temperature control is more accurate.
In order to regulate the output power of the main heating module 22 and the drying temperature, the main heating module 22 includes a voltage regulating switch 221 and a main heating pipe 222, and the control module 4 controls the power of the main heating pipe 222 through the voltage regulating switch 221. The voltage regulating switch 221 selects the SCR voltage regulator, and is in a contactless control mode, so that the damage rate of equipment is reduced, the temperature control precision is improved, and the energy consumption is reduced.
For the purpose of circuit monitoring during system operation, a current sensor 6 is provided in the circuit of the main heating pipe 222 and the auxiliary heating pipe 212, the current sensor 6 being in signal connection with the control module 4. The damage degree of the electric heating pipe is detected through circuit detection, so that accident potential is eliminated, high maintenance cost is effectively avoided, and production loss is reduced.
In order to timely alert the operator of a malfunction of the system, the control module 4 further comprises a malfunction alerting unit 46.
As shown in fig. 2 to 4, a control method of an oven temperature control system of a gravure printing machine includes the steps of:
s1: the system starts the front working: starting the exhaust device 3; s2 is entered;
s2: setting a target temperature value of a printed matter: starting a control system, setting a target temperature value of the printed matter through a target temperature setting unit 41, and sending the target temperature value of the printed matter to a storage unit 42 by the target temperature setting unit 41; s3, entering;
s3: setting a target heating temperature value of the oven: the ambient temperature sensor 51 collects the temperature of the current working environment and sends the temperature to the storage unit 42, and the storage unit 42 obtains a target heating temperature value of the oven according to the target temperature value of the printing product set in the step S2 and the temperature of the current working environment; s4, entering a step S;
s4: selection of a heating mode:
a main heating mode, in which the main heating module 22 alone heats,
a hybrid heating mode in which the main heating module 22 and the auxiliary heating module 21 perform heating simultaneously;
the storage unit 42 sends the target heating temperature value of the oven obtained in S3 to the mode selection unit 43, the mode selection unit 43 selects to use the main heating mode or the hybrid heating mode according to the target heating temperature value of the oven, and sends a signal of the selection result to the control unit 44; s5, entering;
s5: the system operates: the control unit 44 starts the heating mode selected in the S4, the actual heating temperature of the oven at the air outlet of the air exhaust device 3 is collected by the oven temperature sensor 52 and sent to the parameter processing unit 45, the parameter processing unit 45 obtains a temperature deviation value delta T according to the target heating temperature value of the oven obtained in the S3 and the actual heating temperature of the oven, and the parameter processing unit 45 converts the temperature deviation value delta T into an adjustment signal and then sends the adjustment signal to the control unit 44 for temperature adjustment; s6, entering a step S;
according to the temperature deviation value delta T, the PLC control module 4 carries out PID operation through the parameter processing unit 45 to output 4-20 Ma signals, adjusts the phase control mode of the SCR voltage regulator, and changes the effective value of the output voltage, thereby realizing the power adjustment of the main heating pipe 222, and the temperature control mode can accurately achieve +/-1 ℃, shorten the temperature rise time, reduce the heat loss and improve the drying capacity of the system.
S6: and (3) finishing: the temperature control system is firstly closed, and after the oven is cooled, the exhaust device 3 is closed.
The target heating temperature value of the oven is obtained by setting the target heating temperature value of the printed matter and the target heating temperature value of the printed matter, the main heating mode or the mixed heating mode is selected to be used according to the target heating temperature value of the oven, in order to realize temperature control adjustment in the system operation process, the temperature deviation value delta T obtained by the target heating temperature value of the oven and the actual heating temperature of the oven is converted into an adjustment signal and then sent to the control unit 44, the control unit 44 adjusts the corresponding mode temperature, and because the auxiliary heating module 21 is used for constant-temperature heating, only the power of the main heating pipe 222 of the main heating module 22 is required to be adjusted, so that the whole temperature of the system can be adjusted according to the environmental conditions, the temperature control is more accurate, the service life of the heating pipe is prolonged, the unnecessary energy loss is reduced, the maintenance cost is reduced, and the yield of printed matters is improved.
In order to select the heating mode, the specific steps of S4 are as follows:
starting conditions of the main heating mode: when the target heating temperature value of the oven is less than or equal to the target heating temperature value of the print, the mode selection unit 43 selects to use the main heating module 22, sends a signal of the selection result to the control unit 44, and the control unit 44 activates the main heating module 22;
conditions for mixed heating mode initiation: when the target heating temperature value of the oven is greater than the target temperature value of the printed matter, the mode selection unit 43 selects to use the main heating module 22 and the auxiliary heating module 21 simultaneously, and sends a signal of the selection result to the control unit 44, and the control unit 44 activates the main heating module 22 and the auxiliary heating module 21 simultaneously.
Example 1
The target temperature setting unit 41 sets the target temperature value of the printed matter to 80 ℃, the target temperature setting unit 41 sends the target temperature value of the printed matter to the storage unit 42, the ambient temperature sensor 51 collects the temperature of the current working environment to be 35 ℃ and sends the temperature to the storage unit 42, the target heating temperature value of the oven is set to be smaller than the target temperature value of the printed matter to 80 ℃ because the temperature of the current working environment is 35 ℃ and is in a high temperature interval, namely, the storage unit 42 obtains the target heating temperature value of the oven to be 75 ℃ according to the target temperature value of the printed matter to 80 ℃ and the temperature of the current working environment to 35 ℃, the storage unit 42 sends the target heating temperature value of the oven to the mode selection unit 43, the mode selection unit 43 selects to use the main heating mode because the target heating temperature value of the oven is smaller than the target temperature value of the printed matter to be 80 ℃, the control unit 44 sends a signal of the selection result to the control unit 44, and the control unit 44 starts the main heating module 22.
Example two
The target temperature setting unit 41 sets the target temperature value of the printed matter to 80 ℃, the target temperature setting unit 41 sends the target temperature value of the printed matter to the storage unit 42, the ambient temperature sensor 51 collects the temperature of the current working environment to be 20 ℃ and sends the temperature to the storage unit 42, the target heating temperature value of the oven is set to be equal to the target temperature value of the printed matter to 80 ℃ because the temperature of the current working environment is 20 ℃ in a normal temperature interval, namely, the storage unit 42 obtains the target heating temperature value of the oven to be 80 ℃ according to the target temperature value of the printed matter to 80 ℃ and the temperature of the current working environment to 20 ℃, the storage unit 42 sends the target heating temperature value of the oven to the mode selection unit 43, the mode selection unit 43 selects to use the main heating mode because the target heating temperature value of the oven is equal to the target temperature value of the printed matter to be 80 ℃, the control unit 44 sends a signal of the selection result to the control unit 44, and the control unit 44 starts the main heating module 22.
Example III
The target temperature setting unit 41 sets the target temperature value of the printed matter to 80 ℃, the target temperature setting unit 41 sends the target temperature value of the printed matter to the storage unit 42, the ambient temperature sensor 51 collects the temperature of the current working environment to be 5 ℃ and sends the temperature to the storage unit 42, the target heating temperature value of the oven is set to be larger than the target temperature value of the printed matter to 80 ℃ because the temperature of the current working environment is in a low temperature zone, namely, the storage unit 42 obtains the target heating temperature value of the oven to be 90 ℃ according to the target temperature value of the printed matter to 80 ℃ and the temperature of the current working environment to be 5 ℃, the storage unit 42 sends the target heating temperature value of the oven to the mode selection unit 43, the mode selection unit 43 selects to use the mixed heating mode because the target heating temperature value of the oven to be larger than the target temperature value of the printed matter to be 80 ℃, the control unit 44 sends a signal of the selection result to the control unit 44, and the control unit 44 starts the main heating module 22 and the auxiliary heating module 21.
In order to detect the damage degree of the electric heating pipe, eliminate the accident hidden trouble, reduce the production loss of maintenance cost, the said S5 system includes the circuit monitoring in the operation course, the said current sensor 6 transmits the load current change to the parameter processing unit 45, the parameter processing unit 45 judges the load symmetry according to the three-phase current, so as to judge whether the heating pipe fails, if the trouble, the parameter processing unit 45 sends the signal to the control unit 44, the control unit 44 starts the trouble alarm unit 46, shut down and maintain; if no fault exists, the temperature control system is firstly closed after the processing is finished, and the exhaust device 3 is closed after the baking oven is cooled.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides an intaglio printing press oven temperature control system, includes oven body (2) of installing in drying chamber (1), exhaust device (3) and installs auxiliary heating module (21) in oven body (2), auxiliary heating module (21) are including interconnect's auxiliary control switch (211) and auxiliary heating pipe (212), its characterized in that: the heating device comprises a control module (4), a temperature sensor module (5) and a main heating module (22) arranged in an oven body (2), wherein the temperature sensor module (5) is connected with the control module (4) in a signal manner, and the control module (4) is respectively connected with the main heating module (22) and an auxiliary heating module (21).
2. The intaglio printing press oven temperature control system according to claim 1, wherein: the control module (4) comprises a target temperature setting unit (41), a storage unit (42), a mode selection unit (43), a control unit (44) and a parameter processing unit (45); the target temperature setting unit (41) sends a target temperature value of a printed matter to the storage unit (42), the storage unit (42) sends a target heating temperature value of the oven to the mode selection unit (43), and the mode selection unit (43) sends a mode selection result to the control unit (44); the parameter processing unit (45) sends a target heating temperature value of the oven and a temperature deviation value delta T of an actual heating temperature of the oven to the control unit (44).
3. The intaglio printing press oven temperature control system according to claim 2, wherein: the temperature sensor module (5) comprises an ambient temperature sensor (51) and an oven temperature sensor (52) which are respectively connected with the control module (4) in a signal mode.
4. A gravure printing press oven temperature control system according to claim 3, characterized in that: the main heating module (22) comprises a voltage regulating switch (221) and a main heating pipe (222), and the control module (4) controls the power of the main heating pipe (222) through the voltage regulating switch (221).
5. The gravure printing press oven temperature control system of claim 4, wherein: a current sensor (6) is arranged in the circuit of the main heating pipe (222) and the auxiliary heating pipe (212), and the current sensor (6) is in signal connection with the control module (4).
6. The gravure printing press oven temperature control system of claim 5, wherein: the control module (4) further comprises a fault alarm unit (46).
7. The control method of an oven temperature control system of a gravure printing machine according to claim 4, characterized in that: the method comprises the following steps:
s1: the system starts the front working: starting an exhaust device (3); s2 is entered;
s2: setting a target temperature value of a printed matter: starting a control system, setting a target temperature value of the printed matter through a target temperature setting unit (41), and sending the target temperature value of the printed matter to a storage unit (42) through the target temperature setting unit (41); s3, entering;
s3: setting a target heating temperature value of the oven: an ambient temperature sensor (51) collects the temperature of the current working environment and sends the temperature to a storage unit (42), and the storage unit (42) obtains a target heating temperature value of the oven according to the target temperature value of the printing product set in the step S2 and the temperature of the current working environment; s4, entering a step S;
s4: selection of a heating mode:
a main heating mode in which the main heating module (22) alone heats,
a hybrid heating mode in which the main heating module (22) and the auxiliary heating module (21) heat simultaneously;
the storage unit (42) sends the target heating temperature value of the oven obtained in the step S3 to the mode selection unit (43), the mode selection unit (43) selects a main heating mode or a mixed heating mode according to the target heating temperature value of the oven, and a signal of a selection result is sent to the control unit (44); s5, entering;
s5: the system operates: the control unit (44) starts the heating mode selected in the S4, the oven temperature sensor (52) collects the actual heating temperature of the oven at the air outlet of the air exhaust device (3) and sends the actual heating temperature to the parameter processing unit (45), the parameter processing unit (45) obtains a temperature deviation value delta T according to the target heating temperature value of the oven obtained in the S3 and the actual heating temperature of the oven, and the parameter processing unit (45) converts the temperature deviation value delta T into an adjusting signal and sends the adjusting signal to the control unit (44) for temperature adjustment; s6, entering a step S;
s6: and (3) finishing: the temperature control system is firstly closed, and after the baking oven is cooled, the air exhaust device (3) is closed.
8. The control method of an oven temperature control system of a gravure printing machine according to claim 7, characterized in that: the specific steps of the S3 are as follows:
the storage unit (42) is provided with a low temperature interval of-5 ℃ to 10 ℃, a normal temperature interval of 11 ℃ to 25 ℃ and a high temperature interval of 26 ℃ to 40 ℃, and when the working environment temperature is in the low temperature interval, the target heating temperature value of the oven is set to be larger than the target temperature value of the printed matter; when the working environment temperature is in a normal temperature interval, setting a target heating temperature value of the oven to be equal to a target temperature value of a printed matter; when the working environment temperature is in a high-temperature interval, the target heating temperature value of the oven is set to be smaller than the target temperature value of the printed matter.
9. The control method of an oven temperature control system of a gravure printing machine according to claim 7, characterized in that: the specific steps of the S4 are as follows:
starting conditions of the main heating mode: when the target heating temperature value of the oven is smaller than or equal to the target heating temperature value of the printing matter, the mode selection unit (43) selects to use the main heating module (22), a signal of a selection result is sent to the control unit (44), and the control unit (44) starts the main heating module (22);
conditions for mixed heating mode initiation: when the target heating temperature value of the oven is larger than the target heating temperature value of the printed matter, the mode selection unit (43) selects to simultaneously use the main heating module (22) and the auxiliary heating module (21), a signal of a selection result is sent to the control unit (44), and the control unit (44) simultaneously starts the main heating module (22) and the auxiliary heating module (21).
10. The control method of an oven temperature control system of a gravure printing machine according to claim 6, characterized in that: the S5 system comprises circuit monitoring in the operation process, the current sensor (6) transmits load current change to the parameter processing unit (45), the parameter processing unit (45) judges load symmetry according to three-phase current, so as to judge whether a heating pipe is faulty or not, if so, the parameter processing unit (45) sends a signal to the control unit (44), the control unit (44) starts a fault alarm unit (46) and stops maintenance; if no fault exists, the temperature control system is firstly closed after the processing is finished, and the exhaust device (3) is closed after the baking oven is cooled.
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| CN116330817B (en) | 2024-01-26 |
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