CN114035497A - Emergency switching control method suitable for finish paint drying furnace of automobile coating plant - Google Patents
Emergency switching control method suitable for finish paint drying furnace of automobile coating plant Download PDFInfo
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- CN114035497A CN114035497A CN202111249901.0A CN202111249901A CN114035497A CN 114035497 A CN114035497 A CN 114035497A CN 202111249901 A CN202111249901 A CN 202111249901A CN 114035497 A CN114035497 A CN 114035497A
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- drying room
- drying
- control method
- finish paint
- switching control
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- 238000001035 drying Methods 0.000 title claims abstract description 139
- 239000003973 paint Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000011248 coating agent Substances 0.000 title claims abstract description 14
- 238000000576 coating method Methods 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 238000010422 painting Methods 0.000 claims 6
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1103—Special, intelligent I-O processor, also plc can only access via processor
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Drying Of Solid Materials (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses an emergency switching control method suitable for finish paint drying ovens in an automobile coating plant, which is an emergency switching control method when a single drying oven conveying line or two drying oven conveying lines break down, and aims to provide a control method capable of flexibly determining the failure condition of the finish paint drying oven conveying lines according to the failure type, so that the normal production is ensured, the energy loss is reduced, and the quality problem is reduced as much as possible; compared with the traditional alternative inlet and outlet program, the energy waste when the fault occurs and the quality problem of the vehicle body are greatly reduced, the switching is flexible, the operation is convenient, and the method has strong applicability and popularization value.
Description
Technical Field
The invention relates to the technical field of automobile coating equipment, in particular to an emergency switching control method suitable for a finish paint drying furnace in an automobile coating plant.
Background
At present, when one automobile coating finish paint drying furnace production line is composed of two parallel conveying lines, the program design concept generally adopts an alternative inlet and outlet mode, when one or two finish paint drying furnace conveying lines break down, the traditional processing mode is that all drying furnace conveying chains stop simultaneously immediately after receiving an alarm signal, or the whole finish paint production line stops, a failed drying furnace is started after the fault is eliminated, and the finish paint production line can be recovered after all drying furnaces rise to the working temperature. Traditional emergency treatment measures are too single, when only a certain drying furnace conveying line breaks down, all drying furnace conveying chains must be stopped simultaneously to wait for recovery, whether production can be continued or not can not be determined according to the type of the failure, unnecessary productivity and energy consumption loss are caused, and the quality of products is influenced because the automobile body is excessively baked or is not baked enough.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an emergency switching control method suitable for a finish paint drying furnace in an automobile coating plant, namely an emergency switching control method when a single drying furnace conveying line or two drying furnace conveying lines have faults under the production condition of two drying furnace conveying lines, and aims to provide a control technology capable of flexibly determining the finish paint drying furnace conveying lines under the fault condition according to the fault types, so that the normal production is ensured, the energy loss is reduced, and the quality problem is reduced as much as possible.
In order to achieve the purpose, the invention adopts the following technical scheme:
an emergency switching control method suitable for a finish paint drying furnace in an automobile coating plant comprises the following steps:
s1: under the production condition of two drying furnace conveying lines, judging whether the drying furnace conveying lines can be quickly recovered or not when a single drying furnace conveying line or two drying furnace conveying lines are in failure;
s2: if the temperature can be quickly recovered and the temperature of the drying room is not lower than the working temperature by 10 ℃, PlanB (entering the vehicle at the inlet) is adopted;
s3: if the temperature can not be quickly recovered or the temperature of the drying room is lower than the working temperature by more than 10 ℃, PlanA (entry-free) is adopted.
Further, it is further determined in S2 that when neither the new drying room nor the old drying room fails in PlanB, both drying rooms can enter and exit simultaneously.
Further, in S2, it is further determined that when the new drying room fails in the PlanB, the old drying room goes in and out of the car, and the new drying room is linked.
Further, in S2, it is further determined that when the old drying room fails in the PlanB, the new drying room enters and exits the car, and the old drying room stops the chain.
Further, it is further determined in S3 that when both the new drying room and the old drying room fail in PlanA, both drying rooms are simultaneously out of the oven and do not enter the oven.
Further, in S3, it is further determined that when the new drying room fails in PlanA, the old drying room gets in and out of the car, and the new drying room does not get out of the car.
Further, in S3, it is further determined that when the old drying room fails in PlanA, the new drying room is out of the car, and the old drying room is not out of the car.
The invention has the beneficial effects that:
the invention is suitable for the emergency switching control method of the finish paint drying oven in an automobile coating plant, can realize emergency switching under various conditions when one or more drying oven devices have faults, greatly reduces energy waste when the faults occur and the quality problem of an automobile body compared with the traditional alternative inlet and outlet program, is flexible in switching, convenient to operate and has strong applicability and popularization value.
Drawings
FIG. 1 is a logic diagram of a control program of an emergency switching control method for a finish paint drying oven in an automobile coating plant according to an embodiment of the present invention;
FIG. 2 is a control panel for operating a control program of an emergency switching control method for a finish paint drying oven in an automobile coating plant according to an embodiment of the present invention;
FIG. 3 is a network connection diagram of an emergency switching control method for a finish paint drying oven in an automobile coating plant according to an embodiment of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Referring to FIGS. 1-3, when one or both of the drying rooms fail and fail to recover in a short time, and the temperature of the drying room is lower than the working temperature by more than 10 ℃, PlanA is activated (the entrance of the two drying rooms is not in the vehicle)
The two drying rooms are simultaneously discharged and do not enter: when one or two drying rooms have problems, the function of entering the two drying rooms into the vehicle can be closed by clicking the button that the inlet is not forced to be used for loading the workpiece, and the outlet of the drying room is allowed to continue to exit the vehicle so as to ensure that the vehicle body in the drying room is not over-baked.
The old drying room is taken out, and the new drying room is not taken out: when the new drying room independently breaks down, the button of 'forced unloading at the outlet of the old drying room' is clicked, so that the chain of the old drying room can be forced to run for unloading; and (3) according to the fault condition of the new drying room, a 'chain stopping of the new drying room is not forced' button is clicked intermittently, and the quantity of the new drying room which is taken out can be controlled manually so as to ensure that the automobile body in the new drying room is not over-baked.
The new drying room is taken out, and the old drying room is not taken out: when the old drying room breaks down, the button of 'forced vehicle-out from the outlet of the new drying room' is clicked, so that the chain of the old drying room can be forced to run and vehicle-out; and intermittently clicking an 'unforced old drying room chain stopping' button according to the fault condition of the new drying room.
When one or two drying rooms are failed but can be quickly recovered and the working temperature drop temperature does not exceed 10 ℃, PlanB is started (the inlet of the two drying rooms can be driven in)
The two drying rooms simultaneously enter and exit, and the production mode is normal: and the two drying rooms are failed but are recovered immediately, the temperature drop of the working temperature is less than 10 ℃, and the normal production mode is kept unchanged.
The old drying room enters and exits the vehicle, and the new drying room stops the chain: when the new drying room fails, but is immediately recovered and the temperature drop does not exceed 10 ℃. And lightening a 'conveying chain bypass of an old drying room' button and a 'forced delivery of an outlet of the old drying room' button to ensure that the old drying room normally delivers the vehicle, and lightening a 'not-forced new drying room chain stopping' button according to the situation to ensure that the new drying room delivers the vehicle until the working temperature is reached.
And (3) the new drying room enters and exits the vehicle, and the old drying room stops the chain: when the old drying room fails, but is recovered immediately and the temperature drop does not exceed 10 ℃. And lightening a 'new drying room conveying chain bypass' button and a 'new drying room outlet forced vehicle-out' button to ensure that the new drying room normally enters and exits the vehicle, and lightening an 'unforced old drying room chain-stopping' button according to conditions to ensure that the old drying room enters and exits the vehicle until the working temperature is reached.
As shown in fig. 3, the hardware design content is as follows: after the PLC module 1 and the PLC module 2 are communicated with the etap5 through the etap1, the communication with the PLC module 3 is achieved through bridging of the etap2 and the etap3 to form an integral communication network, and finally the communication is completed through projection of the etap4 to the control screen.
Example one
Take a primary voltage flash failure of a finish paint drying furnace transmission line in a certain automobile coating plant as an example.
And due to the external voltage flash failure, the two finish paint drying furnace conveying lines simultaneously have a temporary halt failure. After the overhaul and confirmation of equipment personnel, the drying oven of the old drying room can be started just before production, the temperature drop is not more than 10 ℃, and the new drying room can be started normally when the temperature drop is more than 10 ℃ due to other problems.
And at the moment, the scheme No. 2 of PLAN B is analyzed and determined to be used, buttons of an old drying room conveying chain bypass and an old drying room outlet forced unloading are lightened, normal unloading of the old drying room is guaranteed, meanwhile, in order to guarantee that the product vehicle staying in the area 3 of the new drying room is not overbaked to cause quality problems, a button of un-forced new drying room chain stopping is lightened, normal unloading of the new drying room is guaranteed, after 4 vehicles are discharged from the new drying room, the button of un-forced new drying room chain stopping is clicked again, the unloading function of the new drying room is closed until the temperature of the new drying room is recovered, and the normal production mode is returned.
The above is an embodiment of the present invention. The embodiments and specific parameters in the embodiments are only for the purpose of clearly illustrating the verification process of the invention and are not intended to limit the scope of the invention, which is defined by the claims, and all equivalent structural changes made by using the contents of the specification and the drawings of the present invention should be covered by the scope of the present invention.
Claims (7)
1. An emergency switching control method suitable for a finish paint drying furnace in an automobile coating plant is characterized by comprising the following steps: the method comprises the following steps:
s1: under the production condition of two drying furnace conveying lines, judging whether the drying furnace conveying lines can be quickly recovered or not when a single drying furnace conveying line or two drying furnace conveying lines are in failure;
s2: if the temperature can be quickly recovered and the temperature of the drying room is not lower than the working temperature by 10 ℃, PlanB (entering the vehicle at the inlet) is adopted;
s3: if the temperature can not be quickly recovered or the temperature of the drying room is lower than the working temperature by more than 10 ℃, PlanA (entry-free) is adopted.
2. The emergency switching control method suitable for the finish paint drying oven of the automobile painting factory as claimed in claim 1, wherein:
in S2, it is further determined that when neither the new drying room nor the old drying room is faulty in PlanB, both drying rooms can enter and exit simultaneously.
3. The emergency switching control method suitable for the finish paint drying oven of the automobile painting factory as claimed in claim 1, wherein:
in the step S2, it is further judged that when the new drying room in the PlanB is in fault, the old drying room gets in and out of the vehicle, and the new drying room stops the chain.
4. The emergency switching control method suitable for the finish paint drying oven of the automobile painting factory as claimed in claim 1, wherein:
in the step S2, it is further judged that when the old drying room in the PlanB is in fault, the new drying room enters and exits the vehicle, and the old drying room stops the chain.
5. The emergency switching control method suitable for the finish paint drying oven of the automobile painting factory as claimed in claim 1, wherein:
in the step S3, it is further determined that when both the new drying room and the old drying room fail in PlanA, the two drying rooms are out of the vehicle at the same time and do not enter the vehicle.
6. The emergency switching control method suitable for the finish paint drying oven of the automobile painting factory as claimed in claim 1, wherein:
in the step S3, it is further judged that when a new drying room fails in PlanA, the old drying room gets in and out of the vehicle, and the new drying room does not get out of the vehicle.
7. The emergency switching control method suitable for the finish paint drying oven of the automobile painting factory as claimed in claim 1, wherein:
and S3, when the old drying room fails in PlanA, the new drying room is taken out of the car, and the old drying room is not taken out of the car.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111249901.0A CN114035497A (en) | 2021-10-26 | 2021-10-26 | Emergency switching control method suitable for finish paint drying furnace of automobile coating plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111249901.0A CN114035497A (en) | 2021-10-26 | 2021-10-26 | Emergency switching control method suitable for finish paint drying furnace of automobile coating plant |
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| CN114035497A true CN114035497A (en) | 2022-02-11 |
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| CN202111249901.0A Pending CN114035497A (en) | 2021-10-26 | 2021-10-26 | Emergency switching control method suitable for finish paint drying furnace of automobile coating plant |
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2021
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Application publication date: 20220211 |
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