CN106311775B - A kind of independent partitions control method suitable for roller-plate cold bed - Google Patents
A kind of independent partitions control method suitable for roller-plate cold bed Download PDFInfo
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Abstract
A kind of independent partitions control method suitable for roller-plate cold bed, belong to control field.The cold bed is roller-plate cold bed；Whole cold bed working region is decomposed into several subregions by it, Subarea detecting is carried out to cold bed, width by PLC program according to supplied materials steel plate, calculate open ended steel plate number on each isolated area, and combine the cloth situation of cold bed target area and the chilling temperature setting model of steel plate needs, the operational mode in the region is automatically selected, to improve the utilization rate of cold bed.By the device simultaneously classification cooling treatment is carried out to the different cooling jig steel plates in heat treatment process, can effectively avoid conventional cold bed integrally control caused by utilization rate it is low, reduce the upper and lower cold bed of steel plate stand-by period；Make the steel plate of different size follow each cooling Temperature control model function on cold bed to be achieved, greatly enhance utilization rate and the control flexibility of cold bed.It can be widely used for the cold bed cooling control field during heat-treatment lines large-scale continuous production.
Description
Technical field
The invention belongs to control field, more particularly to a kind of cold bed being used for during heat-treatment lines large-scale continuous production
Control method for lowering temp.
Background technology
In the production process of the administrative Thick Plate Plant heat-treatment lines of applicant, thermally treated stove heat or it is quenched after steel plate
Natural cooling is carried out on cold bed, collection or transportation processing are entered back into after temperature meets to require.
Cold bed forms an independent heat treatment with heat-treatment furnace and its access device and given birth to as heat-treatment furnace outlet device
The technique such as producing line, the aligning of rear process then belongs to another independent production line, therefore natural cooling of the steel plate on cold bed
(air cooling) time and collection temperature have no strict technology requirement.
The cold bed is step motion control pattern, and being hydraulically operated step rate, slowly single stepping is advanced, so as to by cold bed
Steel plate transport is forward (shown in Fig. 1, Fig. 2).
The characteristics of this automatic control mode is：
1st, transporting direction is single：Steel plate on cold bed can only carry out advance fortune automatically by the periodic motion of step rate
It is defeated；
2nd, control mode is simple：Limited by mechanical structure, cold bed must be used as it is overall and can not partition running, that is, work as stepping
When beam advances, all steel plates on cold bed carry out advance transmission simultaneously；
3rd, chilling temperature can not be controlled：L1 automatic control systems (in applicant enterprise, are practised when steel plate enters, transports cold bed
The used upper 1 grade of PLC controlled for basic automatization is referred to as L1, and 2 grades of PLC for process management are L2, similarly hereinafter) using traditional
" first in first out " lining up mode, if the chilling temperature for reaching requirement confirms by operating personnel entirely, no automated procedure computer control
System, can not more realize Temperature Control Model.
Because the cold bed of the heat-treatment lines of hot rolling 2050 is online equipment, heat-treatment furnace and cold straightener are connected, steel plate is cold
Haulage time on bed is controlled by cooling Temperature control model.Further, since heat-treatment lines process-intensive, for every kind of specification steel plate
Technology for Heating Processing is had nothing in common with each other, thus the cooling to it requires also different.The single queue-type cold bed control of tradition can not
Meet actual process demand.
It it is on 08 21st, 2013 in authorized announcement date, Authorization Notice No. is that CN203140457U Chinese utility model is special
In profit, " a kind of multistage cold bed master ＆ slave control system " is disclosed, and it includes cold bed body, host computer, programmable controller, cold
Principal and subordinate's stepping is cross-device for bed, cold bed body principal and subordinate's stepping cross-location detection means, principal and subordinate's driving motor, principal and subordinate's speed reducer device,
Principal and subordinate's transmission control device, host computer connection programmable controller I/O modules, main transmission control device are communicated by main transmission
Cable is sequentially connected that main driving motor, main transmission deceleration device, the main stepping of cold bed be cross-device, cold bed body master enters cross-location detection
Device, cold bed body master enter cross-location detection means and connect programmable controller by main transmission signal wire, controlled from transmission
Device by being sequentially connected from transmission communication cable from driving motor, from transmission decelerating device, cold bed from stepping is cross-device, cold bed
Body is from cross-location detection means is entered, and cold bed body is from cross-location detection means is entered by may be programmed from actuating signal connection
Sequence controller.The technical scheme is primarily adapted for use in the master-slave synchronisation control for realizing cold bed multistage.
It is on 01 29th, 2014 in publication date, it is public in Publication No. CN103537492A Chinese invention patent application
Open " a kind of synchronisation control means for multistage cold bed ", technology established angle synchronization module (1) in the programmable controller,
Angle synchronization module (1) reads actual speed value from transmission device, calculates the actual angle α 1 and α of the rotation of cold bed section eccentric wheel
N, α 1 is the actual anglec of rotation of principal piece cold bed, and α n are the actual anglec of rotation of secondary segment cold bed；The actual angle α n of each secondary segment are equal
Compared with the actual angle α 1 of principal piece, if difference DELTA α<=1%, then think angle synchronization；If difference DELTA α>1%, then by difference
Value is converted into the additional given Nadd of speed by pi regulator output and is added to the input of itself actuator velocity adjuster,
Speed closed loop is participated in reconcile；Described multistage cold bed refers to more than two sections of the cooling bed device mechanically disconnected；It is first that multistage is cold
Bed is defined as n sections, and n is >=2 integer, the first paragraph cold bed in n section cold beds is defined as into principal piece cold bed, remaining cold bed section is
Secondary segment cold bed；The rotating speed Nset of technique initialization is sent to the input of the speed regulator of every section of cooling bed transmission gear by PLC, makees
Principal velocity for each transmission device gives；Principal piece cold bed is passed through in PLC by conventional Speed closed-link system control, secondary segment cold bed
Angle synchronization module (1) calculate speed Nadd, Nadd is sent to the additional given defeated of itself actuator velocity adjuster
Enter end, give as from the addition speed of figure, be superimposed with principal velocity, complete the speed regulation of this section of cold bed jointly.The technology
Scheme is mainly concerned with Synchronization Control of the coaxial cold bed of multistage on-mechanical under multistep continuous operation mode.
In actual applications,, can suitable for single area independent control there is not yet after hot rolling is heat-treated heating technique
Meet the cold bed control method for lowering temp for realizing the temperature drop demand of different steel plates simultaneously.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of independent partitions control method suitable for roller-plate cold bed,
It uses the control mode that several independent partitions are decomposed into whole cold bed working region, and different according to supplied materials require to realize
The Temperature control model of setting, and possess the functions such as independent advance, swing, cold bed is driven suitable for the motor of roller-plate mechanical structure,
Meet the cold bed cooling control model for realizing the temperature drop demand of different steel plates simultaneously, be a kind of utilization that can greatly enhance cold bed
Rate and the control method for controlling flexibility.
The technical scheme is that：A kind of independent partitions control method suitable for roller-plate cold bed is provided, including it is cold
Bed and the PLC for controlling cold bed to run, it is characterized in that：
Described cold bed is roller-plate cold bed；
Described roller-plate cold bed includes multiple roller disks on every power transmission shaft of several power transmission shafts, interlaced arrangement, is located at
The gear motor, speed encoder and array photoelectric sensor of power transmission shaft one end；
Wherein, for each power transmission shaft, described roller disk is sleeved on power transmission shaft and is supported by carrying roller, described
Gear motor drives roller disk drive axis, and described roller disk rotates on carrying roller with power transmission shaft；
The speed encoder being arranged on gear motor and the photoelectric sensor being arranged between two root power transmission shafts, point
The detection and control of two pairs of rollers disk speed and steel plate physical location are not realized；
Described roller-plate cold bed automates logic control by PLC and drives power transmission shaft to drive roller disk to operate, and completion is treated cold
Transport and location action of the steel plate in cold bed region；
Described independent partitions control method, whole cold bed working region is decomposed into several subregions, using photoelectric sensing
Device carries out Subarea detecting to cold bed, the width by PLC program according to supplied materials steel plate, calculates open ended steel on each isolated area
Plate number, and the cloth situation of cold bed target area and the chilling temperature setting model of steel plate needs are combined, automatically select the area
The operational mode in domain, to improve the utilization rate of cold bed；
Described independent partitions control method, cold bed is divided into several small-sized cooled regions, each small-sized cooling zone
Domain is each provided with driving and treats the operation operating function that cold steel plate advances, retreats, stops and swing；
Described independent partitions control method, for each block of steel plate using the time of coming out of the stove as initial time point；With steel of coming out of the stove
Plate temperature is that initial temperature carries out computation of Period, and steel billet temperature of calculating per minute, can be directly perceived by PLC control interface
Cold bed steel billet temperature is shown, when steel plate runs to cold bed body outlet, the now actual measurement temperature of steel plate can be obtained, be steel
Whether plate needs blanking to provide reference；
Described independent partitions control method, the pattern controlled using independent partitions, when eliminating the upper and lower cold bed of steel plate pair
The influence of cold bed body operation, the steel plate of different size is also set to follow each cooling Temperature control model function reality on cold bed
It is existing, greatly enhance utilization rate and the control flexibility of cold bed.
Specifically, described operational mode includes advancing, swing, stop or swinging.
Specifically, described independent partitions control method, is decomposed into several subregions, under by whole cold bed working region
Row control method is to the equipment in each subregion and treats that cold steel plate carries out operation control：
1) according to the specification information for working as front spring, first area's roller disk, which advances, to be run, before detecting steel plate using photoelectric sensor
Along whether the firstth area is entered, using the velocity sensor detection on gear motor and reality of the steel plate in the firstth area is calculated by PLC
Border position, steel plate is accurately positioned in first area's back edge position；
2) PLC receives latter piece of steel plate specification information, determines whether identical with working as front spring specification：If different rule
Lattice, identical cooling Temperature control model can not be used, the firstth area enters next step flow；If same size, identical cooling can be used
Temperature control model is cooled down, and PLC need to be calculated when front spring is latter to determine whether to accommodate for first area's space occupancy rate
Block steel plate, if space is enough, the firstth area waits latter block of steel plate to enter, and returns to back and make cycle criterion；If insufficient space,
Firstth area enters next step flow；
3), it is necessary to by the steel plate transport in one's respective area to the secondth area, then after the firstth area completes isolated area feeding flow
First judge whether the secondth area is empty；If the secondth area is vacant, first area's roller disk, which advances, to be run, and all steel plates are transported into the secondth area
Afterwards, when photoelectric sensor detects that steel plate leaves the firstth area completely, the firstth area labeled as sky, is waited next operating week by PLC
Phase；If second area's non-NULL, PLC need to judge whether reach the setting of temperature control system when the cool time of front spring, if having reached drop
Temperature setting, area's roller disk stop waiting second area's steel plate to empty；If not yet reaching cooling setting, Ze Gai areas start weave mode,
After sub-region swing flow is completed, judge whether the secondth area is empty again, and subsequent control is carried out according to judged result；
4), it is necessary to by the steel plate transport in one's respective area to the 3rd area, then after the secondth area completes isolated area feeding flow
First judge whether the 3rd area is empty；If the 3rd area is vacant, second area's roller disk, which advances, to be run, and all steel plates are transported into the 3rd area
Afterwards, when photoelectric sensor detects that steel plate leaves the secondth area completely, the secondth area labeled as sky, is waited next operating week by PLC
Phase；If the 3rd area's non-NULL, PLC need to judge whether reach the setting of temperature control system when the cool time of front spring, if having reached drop
Temperature setting, area's roller disk stop waiting the 3rd area's steel plate to empty；If not yet reaching cooling setting, Ze Gai areas start weave mode,
After sub-region swing flow is completed, judge whether the 3rd area is empty again, and subsequent control is carried out according to judged result；
5), it is necessary to by the steel plate transport in one's respective area to discharging area, then after the 3rd area completes isolated area feeding flow
PLC first judges whether discharging area is empty, if discharging area is vacant, the 3rd area's roller disk, which advances, to be run, and all steel plates are transported to down
After expecting area, when photoelectric sensor detects that steel plate leaves 3rd areas completely, the 3rd area labeled as sky, is waited next fortune by PLC
The turn-week phase；If discharging area non-NULL, PLC need to judge whether reach the setting of temperature control system when the cool time of front spring, if having reached
Set to cooling, area's roller disk stops waiting discharging area steel plate to empty；If not yet reaching cooling setting, Ze Gai areas, which start, swings mould
Formula, after sub-region swing flow is completed, judge whether discharging area is empty again, and subsequently controlled according to judged result
System；
When described when cold steel plate leaves 3rd areas completely, whole service control process of the steel plate on cold bed terminates.
Further, the line style detection zone being made up of several photoelectric sensors, with reference to velocity sensor to steel
The detection of plate advance traffic direction, can quickly confirm whether steel plate enters the firstth area, the secondth area and the 3rd area；And by several photoelectricity
Sensor group into line style detection zone, with reference to detection of the velocity sensor to steel plate advance traffic direction, also can quickly confirm
Whether steel plate leaves the firstth area, the secondth area and the 3rd area.
Further, the described independent partitions control method suitable for roller-plate cold bed, can be realized with some simultaneously
The cold bed independent control of individual cooling zone composition；According to the difference of steel plate supplied materials width, each cooling zone can accommodate some block specifications
Identical steel plate；Steel plate enters or transported each cooled region and carries out material tracking by photoelectric sensor detection signal.
Further, the described independent partitions control method suitable for roller-plate cold bed, according to observed temperature with calculating
Temperature deviation, the steel plate Temperature control model change calculation formula when front spring is obtained, the change of described steel plate Temperature control model calculates public
Formula can be used for the warm extrusion die for correcting the same follow-up steel plate of steel grade specification；
Described steel plate Temperature control model change calculation formula is as follows：
Wherein, Δ TAC is the temperature change of air cooling；
Tmk is t seconds later steel plate mean temperature；
Tmsk is that steel plate cools down start temperature；
T is air cooling time；
H is thickness of slab；
Em is radiance；
Α conv are pyroconductivity；
H0For the thickness of slab of steel plate.
Further, the described independent partitions control method suitable for roller-plate cold bed, by the device simultaneously to heat
Different cooling jig steel plates in processing procedure carry out classification cooling treatment, can effectively avoid caused by conventional cold bed integrally controls
Utilization rate is low, reduces the stand-by period of the upper and lower cold bed of steel plate.
Compared with the prior art, it is an advantage of the invention that：
1. using the design of motor driven roller tray type structure, equipment is compact and performance of ventilating is good, especially suitable for Thin Specs steel
The cooling of plate；
2. being controlled using independent partitions, influence when eliminating the upper and lower cold bed of steel plate to cold bed body operation, also make difference
The steel plate of specification follows each cooling Temperature control model function on cold bed and is achieved, and greatly enhances utilization rate and the control of cold bed
Flexibility.
Brief description of the drawings
Fig. 1 is the arrangement schematic diagram of traditional walking beam cooler；
Fig. 2 is the control flow schematic diagram of traditional walking beam cooler；
Fig. 3 is that the technique of the present invention and control require flow chart；
Fig. 4 (a)~(c) is the mechanical structure schematic diagram of technical solution of the present invention；
Fig. 5 is the logic control flow block diagram of technical solution of the present invention.
Fig. 6 is that the independent partitions of inventive technique scheme control cold bed control schematic diagram.
In figure, 1 is roller disk, and 2 be power transmission shaft, and 3 be carrying roller, and 4 be gear motor, and 5 be speed encoder, and 6 be photoelectric sensing
Device.
Embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Steel plate after hot rolling mill heat-treatment lines, thermally treated stove heat needs to be cooled to certain temperature rear on cold bed
The processing of subsequent processing can be carried out.Because traditional cold bed control mode is normalized " with same stop is entered " pattern, to different rule
The Temperature control model of lattice steel plate can not almost be realized.Further, since cold bed run action is unified, once there is steel plate to need to enter or transport
When going out, whole cold bed needs to wait for that after the completion of this process next step control can be carried out, and exists for cold bed space availability ratio
Larger waste.
In view of the above-mentioned problems, this programme designs a kind of independent partitions control method suitable for roller-plate cold bed.This method
Subarea detecting is carried out to cold bed using photoelectric sensor, the width by PLC program according to supplied materials steel plate, calculates each isolated area
Upper open ended steel plate number, and the cloth situation of cold bed target area and the chilling temperature setting model of steel plate needs are combined,
Automatically select the area operation pattern：Advance, swing or stop, while meet the cold bed drop for realizing the temperature drop demand of different steel plates
Warm control method, greatly enhance the utilization rate of cold bed and control the control method of flexibility.
The main technique of the technical program and control require that flow is as shown in Figure 3.
In Fig. 4 (a)~(c), the cold bed body of the technical program is mainly made up of the roller disk of interlaced arrangement.Device mainly by
Some roller disks 1, power transmission shaft 2, carrying roller 3, gear motor 4, speed encoder 5 and photoelectric sensor composition.Roller disk 1 is sleeved on biography
It is supported on moving axis 2 and by carrying roller 3.Gear motor 4 drives roller disk power transmission shaft 2 to rotate, and roller disk 1 is on carrying roller 3 with power transmission shaft 2
Rotate together.Speed encoder 6 and laser range finder realize the detection and control of two pairs of rollers disk speed and steel plate physical location respectively.
Drive power transmission shaft to drive roller disk to operate by automating logic control, complete cold bed transport and location action.
The control mode of the technical program can realize the cold bed independent control formed with several cooling zones simultaneously；According to
The difference of steel plate supplied materials width, each cooling zone can accommodate some block specifications identical steel plates；Steel plate enters or transported each cooling
Region carries out material tracking by photoelectric sensor detection signal.
1. control flow
Cold bed is divided into several small-sized cooled regions by this control method, is each provided with advancing, retreat, stop and putting
Dynamic function.Exemplified by cold bed to be divided into three cooled regions (referred to as the firstth area, the secondth area and the 3rd area), described controlling stream
Cheng Wei：
A) according to the specification information for working as front spring, first area's roller disk, which advances, to be run, before detecting steel plate using photoelectric sensor
Along whether the firstth area is entered, using the velocity sensor detection on gear motor and reality of the steel plate in the firstth area is calculated by PLC
Border position, steel plate is accurately positioned in behind the firstth area along (100mm-400mm) position.
B) latter piece of steel plate specification information is received, is determined whether identical with working as front spring specification：If different size, nothing
Method uses identical cooling Temperature control model, and the firstth area enters next step flow.If same size, identical cooling temperature control mould can be used
Type is cooled down, and PLC need to be calculated when front spring determines whether to accommodate latter block of steel plate for first area's space occupancy rate,
If space is enough, the firstth area waits latter block of steel plate to enter, and returns to back and make cycle criterion；If insufficient space, the firstth area
Into next step flow.
C), it is necessary to by the steel plate transport in one's respective area to the secondth area, then after the firstth area completes isolated area feeding flow
First judge whether the secondth area is empty.If the secondth area is vacant, first area's roller disk, which advances, to be run, and all steel plates are transported into the secondth area
Afterwards, when photoelectric sensor detects that steel plate leaves the firstth area completely, the firstth area labeled as sky, is waited next operating week by PLC
Phase.If second area's non-NULL, PLC need to judge whether reach the setting of temperature control system when the cool time of front spring, if having reached drop
Temperature setting, area's roller disk stop waiting second area's steel plate to empty；If not yet reaching cooling setting, Ze Gai areas start weave mode,
After sub-region swing flow is completed, judge whether the secondth area is empty again, and subsequent control is carried out according to judged result.
D), it is necessary to by the steel plate transport in one's respective area to the 3rd area, then after the secondth area completes isolated area feeding flow
First judge whether the 3rd area is empty.If the 3rd area is vacant, second area's roller disk, which advances, to be run, and all steel plates are transported into the 3rd area
Afterwards, when photoelectric sensor detects that steel plate leaves the secondth area completely, the secondth area labeled as sky, is waited next operating week by PLC
Phase.If the 3rd area's non-NULL, PLC need to judge whether reach the setting of temperature control system when the cool time of front spring, if having reached drop
Temperature setting, area's roller disk stop waiting the 3rd area's steel plate to empty；If not yet reaching cooling setting, Ze Gai areas start weave mode,
After sub-region swing flow is completed, judge whether the 3rd area is empty again, and subsequent control is carried out according to judged result.
E), it is necessary to by the steel plate transport in one's respective area to discharging area, then after the 3rd area completes isolated area feeding flow
First judge whether discharging area is empty.If discharging area is vacant, the 3rd area's roller disk, which advances, to be run, and all steel plates are transported into discharging area
Afterwards, when photoelectric sensor detects that steel plate leaves 3rd areas completely, the 3rd area labeled as sky, is waited next operating week by PLC
Phase.If discharging area non-NULL, PLC need to judge whether reach the setting of temperature control system when the cool time of front spring, if having reached drop
Temperature setting, area's roller disk stop waiting discharging area steel plate to empty；If not yet reaching cooling setting, Ze Gai areas start weave mode,
After sub-region swing flow is completed, judge whether discharging area is empty again, and subsequent control is carried out according to judged result.
When steel plate leaves 3rd areas completely, whole control process of the steel plate on cold bed terminates.
Above-mentioned automatic control flow chart is as shown in Figure 5.
2. signal detection：
In figure 6, by taking three cooled regions as an example, by photoelectric sensor LS01-LS02-LS03, LS11-LS12-LS13
And the line style detection zone of LS21-LS22-LS23 compositions, with reference to velocity sensor PG01, PG02 and PG03 advance traffic direction
Detection, can quickly confirm whether steel plate enters the firstth area, the secondth area and the 3rd area；And LS11-LS12-LS13, LS21-
The line style detection zone of LS22-LS23 and LS31-LS32-LS33 compositions, before velocity sensor PG01, PG02 and PG03
Enter the detection of traffic direction, also can quickly confirm whether steel plate leaves the firstth area, the secondth area and the 3rd area.
The line style being made up of photoelectric sensor LS01-LS02-LS03, LS11-LS12-LS13 and LS21-LS22-LS23 is examined
Region is surveyed, with reference to the detection in velocity sensor PG01, PG02 and PG03 fall back direction, can quickly confirm whether steel plate leaves
Firstth area, the secondth area and the 3rd area；And LS11-LS12-LS13, LS21-LS22-LS23 and LS31-LS32-LS33 composition
Line style detection zone, with reference to the detection of velocity sensor PG01, PG02 and PG03 advance traffic direction, it also can quickly confirm steel plate
Whether the firstth area, the secondth area and the 3rd area are entered.
(3) Process Control Principle
According to technological requirement, steel plate after coming out of the stove need to when being cooled to certain temperature on cold bed could blanking, therefore for
Each block of steel plate is using the time of coming out of the stove as initial time point；To come out of the stove, steel billet temperature carries out computation of Period as initial temperature, per minute
A steel billet temperature is calculated, by picture, can intuitively show cold bed steel billet temperature, when steel plate runs to cold bed body outlet,
The now actual measurement temperature of steel plate can be obtained, whether needs blanking to provide reference for steel plate.PLC is according to observed temperature with calculating
Temperature deviation, the steel plate Temperature control model when front spring is obtained, after described steel plate Temperature control model can correct same steel grade specification
The warm extrusion die of continuous steel plate.
Described steel plate Temperature control model (also known as air cooling model) change calculation formula is as follows：
The temperature change (DEG C) of Δ TAC air coolings；
Tmk t seconds later steel plate mean temperature (° K)；
Tmsk steel plates cooling start temperature (° K)；
T air cooling times；
H thicknesss of slab；
Em radiances；
(the Kcal/m of α conv pyroconductivities 7.52hr℃)；
H0Thickness of slab.
Remaining coefficient ai、biDetermination it is related to the thickness value of steel plate, specific value can refer to following table：
Embodiment：
Example：The steel plate of heat treatment three kinds of specifications of production, its specification, the initial temperature come out of the stove, the target of lower cold bed setting are cold
But temperature and cool time are respectively：
Understand that steel plate A, B, C of three kinds of different sizes are cold according to foregoing steel plate Temperature control model (also known as air cooling model)
Need unequal with cool time on bed, and meet relational expression：t1<t2<t3.Therefore, can be by three kinds when using the technical program
The steel plate of different size is respectively placed in different zones according to foregoing control flow chart and carries out independent cooling.
1st, transport controls of the steel plate A on the cold bed of independent partitions：
1) after first piece of steel plate A is completely into the firstth area, judge that latter piece of steel plate specification is identical with working as front spring specification
And remaining space can accommodate steel plate again in isolated area, the firstth area is waited on latter piece of steel plate transport to cold bed, while ought
The information updating of front spring is second piece of steel plate A information.
2) after second piece of steel plate A is completely into the firstth area, judge that latter piece of steel plate specification is identical with working as front spring specification
And remaining space can accommodate steel plate again in isolated area, the firstth area is waited on latter piece of steel plate transport to cold bed, while ought
The information updating of front spring is the 3rd piece of steel plate A information.
3) after the 3rd piece of steel plate A is completely into the firstth area, judge that latter piece of steel plate specification is different from working as front spring specification,
And second area be sky, the firstth area, the secondth area is simultaneously overall advances, and all steel plate A in the firstth area are transported into the secondth area.
4) when the 3rd piece of steel plate A leaves the firstth area completely, by the firstth area labeled as sky, it is allowed to which it receives follow-up steel again
Plate.Meanwhile the 3rd area is judged for sky, the secondth area, the 3rd area are simultaneously overall to advance, and all steel plate A in the secondth area are transported to
3rd area.
5) when the 3rd piece of steel plate A leaves the secondth area completely, by the secondth area labeled as sky, it is allowed to which it receives follow-up steel again
Plate.Meanwhile judge whether steel plate A surface temperature reaches the design temperature of lower cold bed according to live temperature element, if not up to,
3rd area enters independent weave mode, carries out temperature detection at the end of each hunting period again, until observed temperature meets
Sets requirement.
6) when the steel plate A observed temperatures in the 3rd area meet sets requirement, judge cold bed blanking region for sky, then the 3rd
Steel plate A block-by-block blankings in area, until the 3rd block of steel plate leaves the 3rd area completely, the 3rd area is labeled as sky, it is allowed to which it connects again
By follow-up steel plate.
2nd, transport controls of the steel plate B on the cold bed of independent partitions：
1) after first piece of steel plate B is completely into the firstth area, judge that latter piece of steel plate specification is identical with working as front spring specification
And remaining space can accommodate steel plate again in isolated area, the firstth area is waited on latter piece of steel plate transport to cold bed, while ought
The information updating of front spring is second piece of steel plate B information.
2) after second piece of steel plate B is completely into the firstth area, judge that latter piece of steel plate specification is different from working as front spring specification,
And second area be sky, the firstth area, the secondth area is simultaneously overall advances, and all steel plate B in the firstth area are transported into the secondth area.
3) when second piece of steel plate B leaves the firstth area completely, by the firstth area labeled as sky, it is allowed to which it receives follow-up steel again
Plate.Meanwhile judge the 3rd area and be not up to the cool time t set by lower cold bed for empty and steel plate B cool time2, second
Area enters independent weave mode, carries out the detection of the 3rd area room at the end of each hunting period again and cool time compares.
If 4) reached steel plate B setting cool time, space-time, the secondth area do not enter independent stop mode yet in the 3rd area,
The 3rd area room mark is waited to occur.
5) when the 3rd area is that empty mark occurs, the secondth area, the 3rd area are simultaneously overall to advance, by all steel in the secondth area
Plate B is transported to the 3rd area.
6) when second piece of steel plate B leaves the secondth area completely, by the secondth area labeled as sky, it is allowed to which it receives follow-up steel again
Plate.Meanwhile judge whether steel plate B surface temperature reaches the design temperature of lower cold bed according to live temperature element, if not up to,
3rd area enters independent weave mode, carries out temperature detection at the end of each hunting period again, until observed temperature meets
Sets requirement.
7) when the steel plate B observed temperatures in the 3rd area meet sets requirement, judge cold bed blanking region for sky, then the 3rd
Steel plate B block-by-block blankings in area, until the 3rd block of steel plate leaves the 3rd area completely, the 3rd area is labeled as sky, it is allowed to which it connects again
By follow-up steel plate.
3rd, transport controls of the steel plate C on the cold bed of independent partitions：
1) after first piece of steel plate C is completely into the firstth area, judge that remaining space can not accommodate steel again in isolated area
Plate, meanwhile, judge the secondth area and be not up to the cool time t set by lower cold bed for empty and steel plate C cool time3, first
Area enters independent weave mode, carries out the detection of the second area room at the end of each hunting period again and cool time compares.
If 2) steel plate C setting cool time t is reached3And space-time, the firstth area do not enter independent stopping mould yet in the secondth area
Formula, the second area room mark is waited to occur.
3) when the secondth area is that empty mark occurs, the firstth area, the secondth area are simultaneously overall to advance, by the steel plate C in the firstth area
It is transported to the secondth area.
4) when steel plate C leaves the firstth area completely, by the firstth area labeled as sky, it is allowed to which it receives follow-up steel plate again.Together
When, judge the 3rd area and be not up to the cool time set by lower cold bed for empty and steel plate C cool time, the secondth area enters only
Vertical weave mode, carries out the detection of the 3rd area room again at the end of each hunting period and cool time compares.
If 5) reached steel plate C setting cool time, space-time, the secondth area do not enter independent stop mode yet in the 3rd area,
The 3rd area room mark is waited to occur.
6) when the 3rd area is that empty mark occurs, the secondth area, the 3rd area are simultaneously overall to advance, by the steel plate C in the secondth area
It is transported to the 3rd area.
7) when steel plate C leaves the secondth area completely, by the secondth area labeled as sky, it is allowed to which it receives follow-up steel plate again.Together
When, whether the surface temperature for judging steel plate C according to live temperature element reaches the design temperature of lower cold bed, if not up to, the 3rd
Area enters independent weave mode, carries out temperature detection at the end of each hunting period again, until observed temperature meets setting
It is required that.
8) when the steel plate C observed temperatures in the 3rd area meet sets requirement, judge cold bed blanking region for sky, then the 3rd
Steel plate C block-by-block blankings in area, until steel plate C leaves the 3rd area completely, the 3rd area is labeled as sky, it is allowed to which it receives subsequently again
Steel plate.
In addition, in order to preferably utilize this technology, in the heat treatment production of reality according to the length of steel plate cool time
Optimize production organization mode：Cool time short steel plate is fitted into heat-treatment furnace in advance during steel loading and heated, cool time
Filled after long steel plate.When being cooled down after steel plate is come out of the stove on cold bed, the steel plate of cool time length can make full use of its place
Isolated area, do not influence to carry out under the premise of the operation of cold bed loading and unloading it is independent swing cooling, effectively strengthen the utilization of cold bed
Rate.
Due to present invention employs the control mode that several independent partitions are decomposed into whole cold bed working region, according to
The difference of supplied materials requires to realize the Temperature control models of setting, and possesses the functions such as independent advance, swing, is tied suitable for roller-plate machinery
The motor driving cold bed of structure, especially suitable for heat-treatment lines region, especially suitable for heat-treatment lines region, by the device simultaneously
Classification cooling treatment is carried out to the different cooling jig steel plates in heat treatment process, can effectively avoid conventional cold bed from integrally controlling and make
Into utilization rate it is low, reduce the upper and lower cold bed of steel plate stand-by period, there is larger economic promotional value.
The cold bed cooling control field that the method can be widely used in during heat-treatment lines large-scale continuous production.
Claims (5)
1. a kind of independent partitions control method suitable for roller-plate cold bed, including cold bed and the PLC for controlling cold bed to run,
It is characterized in that：
Described cold bed is roller-plate cold bed；
Described roller-plate cold bed includes multiple roller disks on every power transmission shaft of several power transmission shafts, interlaced arrangement, positioned at transmission
The gear motor, speed encoder and array photoelectric sensor of axle one end；
Wherein, it is sleeved on power transmission shaft and is supported by carrying roller for each power transmission shaft, described roller disk, described gear
Motor driven roller disk drive axis, described roller disk rotate on carrying roller with power transmission shaft；
The speed encoder being arranged on gear motor and the photoelectric sensor being arranged between two power transmission shafts, are realized respectively
The detection and control of two pairs of rollers disk speed and steel plate physical location；
Described roller-plate cold bed automates logic control by PLC and drives power transmission shaft to drive roller disk to operate, and cold steel plate is treated in completion
Transport and location action in cold bed region；
Described independent partitions control method, whole cold bed working region is decomposed into several subregions, using photoelectric sensor pair
Cold bed carries out Subarea detecting, the width by PLC program according to supplied materials steel plate, calculates open ended steel plate on each isolated area
Number, and the cloth situation of cold bed target area and the chilling temperature setting model of steel plate needs are combined, automatically select the region
Operational mode, to improve the utilization rate of cold bed,
Described independent partitions control method, cold bed is divided into several small-sized cooled regions, each small-sized cooled region is each
Cold steel plate advance, the operation operating function for retreating, stopping and swinging are treated from possessing driving；
Described independent partitions control method, for each block of steel plate using the time of coming out of the stove as initial time point；With steel plate temperature of coming out of the stove
Spend and carry out computation of Period for initial temperature, steel billet temperature of calculating per minute, by PLC control interface, can intuitively show
Cold bed steel billet temperature, when steel plate runs to cold bed body outlet, the now actual measurement temperature of steel plate can be obtained, is for steel plate
It is no to need blanking to provide reference；
Described independent partitions control method, the pattern controlled using independent partitions, to cold bed when eliminating the upper and lower cold bed of steel plate
The influence of this running body, the steel plate of different size is followed each cooling Temperature control model function on cold bed and be achieved, greatly
The utilization rate of big enhancing cold bed and control flexibility.
2. according to the independent partitions control method suitable for roller-plate cold bed described in claim 1, it is characterized in that described is only
Vertical partition control method, is decomposed into several subregions, according to following control method in each subregion by whole cold bed working region
Equipment and treat that cold steel plate carries out operation control：
A. according to the specification information for working as front spring, first area's roller disk, which advances, to be run, and detecting steel plate forward position using photoelectric sensor is
It is no to enter the firstth area, using the velocity sensor detection on gear motor and actual bit of the steel plate in the firstth area is calculated by PLC
Put, steel plate is accurately positioned in first area's back edge position；
B.PLC receives latter piece of steel plate specification information, determines whether identical with working as front spring specification：If different size, nothing
Method uses identical cooling Temperature control model, and the firstth area enters next step flow；If same size, identical cooling temperature control mould can be used
Type is cooled down, and PLC need to be calculated when front spring determines whether to accommodate latter block of steel plate for first area's space occupancy rate,
If space is enough, the firstth area waits latter block of steel plate to enter, and returns to back and make cycle criterion；If insufficient space, the firstth area
Into next step flow；
C. then first sentence, it is necessary to by the steel plate transport in one's respective area to the secondth area after the firstth area completes isolated area feeding flow
Whether disconnected secondth area is empty；If the secondth area is vacant, first area's roller disk, which advances, to be run, after all steel plates are transported into the secondth area,
When photoelectric sensor detects that steel plate leaves the firstth area completely, the firstth area labeled as sky, is waited next service cycle by PLC；
If second area's non-NULL, PLC need to judge whether reach the setting of temperature control system when the cool time of front spring, be set if having reached cooling
Fixed, area's roller disk stops waiting second area's steel plate to empty；If not yet reaching cooling setting, Ze Gai areas start weave mode, when complete
After swinging flow into a sub-region, judge whether the secondth area is empty again, and subsequent control is carried out according to judged result；
D. then first sentence, it is necessary to by the steel plate transport in one's respective area to the 3rd area after the secondth area completes isolated area feeding flow
Whether disconnected 3rd area is empty；If the 3rd area is vacant, second area's roller disk, which advances, to be run, after all steel plates are transported into the 3rd area,
When photoelectric sensor detects that steel plate leaves the secondth area completely, the secondth area labeled as sky, is waited next service cycle by PLC；
If the 3rd area's non-NULL, PLC need to judge whether reach the setting of temperature control system when the cool time of front spring, be set if having reached cooling
Fixed, area's roller disk stops waiting the 3rd area's steel plate to empty；If not yet reaching cooling setting, Ze Gai areas start weave mode, when complete
After swinging flow into a sub-region, judge whether the 3rd area is empty again, and subsequent control is carried out according to judged result；
E., it is necessary to by the steel plate transport in one's respective area to discharging area after the 3rd area completes isolated area feeding flow, then PLC is first
Judge whether discharging area is empty, if discharging area is vacant, the 3rd area's roller disk, which advances, to be run, and all steel plates are transported into discharging area
Afterwards, when photoelectric sensor detects that steel plate leaves 3rd areas completely, the 3rd area labeled as sky, is waited next operating week by PLC
Phase；If discharging area non-NULL, PLC need to judge whether reach the setting of temperature control system when the cool time of front spring, if having reached drop
Temperature setting, area's roller disk stop waiting discharging area steel plate to empty；If not yet reaching cooling setting, Ze Gai areas start weave mode,
After sub-region swing flow is completed, judge whether discharging area is empty again, and subsequent control is carried out according to judged result；
When described when cold steel plate leaves 3rd areas completely, whole service control process of the steel plate on cold bed terminates.
3. according to the independent partitions control method suitable for roller-plate cold bed described in claim 2, it is characterized in that by several light
The line style detection zone of electric transducer composition, with reference to detection of the velocity sensor to steel plate advance traffic direction, can quickly confirm
Whether steel plate enters the firstth area, the secondth area and the 3rd area；And the line style detection zone being made up of several photoelectric sensors, with reference to speed
Detection of the sensor to steel plate advance traffic direction is spent, also can quickly confirm whether steel plate leaves the firstth area, the secondth area and the 3rd
Area.
4. according to the independent partitions control method suitable for roller-plate cold bed described in claim 1, it is characterized in that described is suitable
For the independent partitions control method of roller-plate cold bed, it can realize that the cold bed formed with several cooling zones is independently controlled simultaneously
System；According to the difference of steel plate supplied materials width, each cooling zone can accommodate some block specifications identical steel plates；Steel plate enters or transported
Each cooled region carries out material tracking by photoelectric sensor detection signal.
5. according to the independent partitions control method suitable for roller-plate cold bed described in claim 1, it is characterized in that described is suitable
For the independent partitions control method of roller-plate cold bed, suitable for heat-treatment lines region, by the device simultaneously to heat treated
Different cooling jig steel plates in journey carry out classification cooling treatment, can effectively avoid conventional cold bed integrally control caused by utilization rate
Lowly, the stand-by period of the upper and lower cold bed of steel plate is reduced.
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| CN110404985A (en) * | 2019-08-29 | 2019-11-05 | 福建三钢闽光股份有限公司 | A kind of cold bed intelligence control system and its application method based on machine vision |
| CN113426841B (en) * | 2021-05-27 | 2023-01-06 | 广东韶钢松山股份有限公司 | Control method for automatically selecting material distribution mode of threaded bar stepping type cooling bed |
| CN114210745B (en) * | 2021-12-30 | 2023-08-29 | 重庆钢铁股份有限公司 | Automatic blanking method of cooling bed |
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| DE3711162A1 (en) * | 1987-04-02 | 1988-10-20 | Kocks Technik | Cooling bed for cooling and straightening elongated material |
| CN2245501Y (en) * | 1994-08-31 | 1997-01-22 | 冶金工业部重庆钢铁设计研究院 | Step-by-step cold bed |
| CN103537492A (en) * | 2013-08-12 | 2014-01-29 | 北京首钢自动化信息技术有限公司 | Synchronous control method for multi-section cooling bed |
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