CN107097021B - The control method of welding machine strip parallel setting device - Google Patents
The control method of welding machine strip parallel setting device Download PDFInfo
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- CN107097021B CN107097021B CN201610093945.1A CN201610093945A CN107097021B CN 107097021 B CN107097021 B CN 107097021B CN 201610093945 A CN201610093945 A CN 201610093945A CN 107097021 B CN107097021 B CN 107097021B
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- small loop
- welding machine
- setting device
- strip
- parallel setting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/16—Bands or sheets of indefinite length
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a kind of control methods of welding machine strip parallel setting device, including small loop control method: welding machine issues the production small loop order of upper channel to unit；Small loop is made, and monitors the Production Time of the small loop of unit；Confirm that the small loop amount of strip is greater than 500mm；Complete small loop production；If small loop is completed in the given time, welding machine no longer issues the vertical motion order of small loop back roll, and otherwise welding machine issues the rising order of small loop back roll, and alarms；The small loop back roll decline of entrance；The small loop back roll of entrance is fallen into place.The control method of welding machine strip parallel setting device of the invention can provide good strip steel weld joint for unit, and reduce the machine halt trouble of unit.
Description
Technical field
The present invention relates to production control methods, more specifically to a kind of control of welding machine strip parallel setting device
Method.
Background technique
As shown in Figure 1, existing continuous galvanizing line welder equipment includes that entrance lower channel is parallel with the three sets of strips in outlet
Adjustment device [being often cased with a pair of of parallel setting device (abbreviation P.A.D), the structure of each parallel setting device is as shown in Figure 6],
The equipment such as entry/exit mouth clamp, entry/exit mouth pinch roller and welder body composition, according to processing flow sequence, successively divides from front to back
Be not: outlet looping 1, the second strip parallel setting device 2 of outlet, outlet pinch roller 3, width notcher 4, the first strip of outlet are parallel
Adjust device 5, welding machine 6, the second strip of entrance upper channel parallel setting device 7, entrance upper channel pinch roller 8, entrance upper channel
First strip parallel setting device 9, entrance upper channel loop 10, the second strip of entrance lower channel parallel setting device 11, entrance
Lower channel pinch roller 12, the first strip of entrance lower channel parallel setting device 13, entrance lower channel loop 14.The strip of welding machine is flat
The function of row adjustment device is exactly: the angle degree of the center line and rear row strip center line that ensure leading strip is controlled certain
In range, its angle degree of perfect condition is 0 (the center line keeping parallelism of i.e. leading strip and rear row strip), such as Fig. 2 and Fig. 3 institute
Show.
Each strip parallel setting device can normally put into be welding machine an important equipment functional parameter, strip adjusts in parallel
After engagement positions function is effectively put into, it can be ensured that welding machine will be in advance and after the completion of the welding of rear row strip, there is no strip after welding
The shape of camber is generated, good strip steel weld joint shape is the necessary condition that unit high speed leads to plate.
Existing control method is:
1. the small tower-loop control of strip parallel setting device uses " synchronously control " mode, " synchronously control " mode of being somebody's turn to do is exactly
Welding machine is issuing small loop order simultaneously to unit, and delay (now designs 2 seconds) after a certain period of time, issues loop back roll vertical motion
Order, when unit plays small loop, welding machine loop back roll is using the synchronous control method risen.
2. the retrogressing control of strip parallel setting device uses " inertia control " mode, " inertia control " mode of being somebody's turn to do is exactly:
When strip parallel setting device backward movement, welding machine PLC (programmable logic controller (PLC)) controls low speed after its first high speed, when the dress
It sets close to when encountering off-line sensors, after PLC (programmable logic controller (PLC)) receives sensor high level " 1 ", sends out immediately
It ceases and desist order out, continues to move forwards by the inertia of strip parallel setting device completely, so that the device and off-line sensors are filled
Divide and combines.
But there are the following problems in actual use for above-mentioned control model:
1. since the small tower-loop control of strip parallel setting device uses " synchronously control " mode, and unit plays small loop
Time includes shut-in time and fieldbus (FL_NET) network transmission order delay time of a straightener etc., due to this
The uncertainty of a little times, welding machine entrance walks the failure of time-out automatically frequent occurrence, and welding machine makes because small tower-loop control is abnormal
Welding is interrupted, and strip parallel setting device normally cannot effectively put into operation, and after causing welding machine to weld strip, strip is being welded
Serious camber shape (severity of camber shape depends on entrance pinch roller state), this reaping hook are formed at seam
It is also easy to produce deviation phenomenon when the strip steel weld joint of bending shape is by furnace, unit is had to reduction of speed production, the strip when sideslip is serious
Can be close to leads to compressor emergency shutdown.
2. since strip parallel setting device cannot normally be put into, by welding the strip steel weld joint formed into the shape of camber
Shape also easily causes circle shear is unilateral to cut failure, and rotary shear equipment cannot normally be put into, and unit cannot normally go out finished product, right
The logistics of cold rolling mill causes very big impact.
3. the backward movement control of strip parallel setting device uses " inertia control " mode, can strip be adjusted in parallel
Less than 1/3, leading to the signal lamp of the sensor is " yellow " (shoulding normally be " green ") for device and the faying face of off-line sensors,
Indicate that the sensor is in a unstable state.And the signal momentary loss of the sensor, unit inlet section repeatedly occurs
It is shut down because of welding machine " HOME POSITION " (home position) dropout, if operative employee does not have found in time, central sections are just
It can be shut down because entry loop strip draws sky, seriously affect stable operation of unit.
Summary of the invention
For the above-mentioned problems in the prior art, the object of the present invention is to provide a kind of welding machine strips to adjust dress in parallel
The control method set can adapt to provide good strip in the control of each strip parallel setting device of welding for unit
Weld seam, and reduce the machine halt trouble of unit.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of control method of welding machine strip parallel setting device, including small loop control method: welding machine is issued to unit
Make the small loop order of upper channel；Small loop is made, and monitors the Production Time of the small loop of unit；Confirm the small loop amount of strip
Greater than 500mm；Complete small loop production；If small loop is completed in the given time, welding machine no longer issues the upper of small loop back roll
Action command is risen, otherwise welding machine issues the rising order of small loop back roll, and alarms；The small loop back roll decline of entrance；The small loop of entrance
Roller is fallen into place.
An embodiment according to the present invention, further includes fallback control method: after welding machine is issued to strip parallel setting device
Move back action command；Strip parallel setting device high-speed cruising；When encountering high low speed switching point, strip parallel setting device low speed fortune
Row；When encountering off-line sensors, by certain time-delay, welding machine is ceased and desisted order to the sending of strip parallel setting device.
An embodiment according to the present invention, delay time are 0.1~0.3 second.
An embodiment according to the present invention, the speed of high-speed cruising are 500mm/3 seconds.
An embodiment according to the present invention, the speed of low speed operation are 500mm/18 seconds.
In the above-mentioned technical solutions, the control method of welding machine strip parallel setting device of the invention can provide good for unit
Good strip steel weld joint, and reduce the machine halt trouble of unit.
Detailed description of the invention
Fig. 1 is welder equipment layout drawing；
Fig. 2 is the parallel regulating device schematic diagram (outlet side) of strip；
Fig. 3 is the parallel regulating device schematic diagram (entrance side) of strip；
Fig. 4 is the flow chart of the small loop control method of the present invention；
Fig. 5 is welding machine strip parallel device (P.A.D) control flow chart；
Fig. 6 is the parallel regulating device schematic elevation view of welding machine.
Specific embodiment
Technical solution of the present invention is further illustrated with reference to the accompanying drawings and examples.
Referring to fig. 4 to fig. 6, the control method of welding machine strip parallel setting device of the invention mainly includes 2 most of, i.e.,
Small loop control method and fallback control method.
As shown in figure 4, small loop control method the following steps are included:
Welding machine issues the production small loop order of upper channel to unit.By taking unit upper channel as an example, when welding machine PLC is (programmable
Logic controller) to machine set PLC (programmable logic controller (PLC)) issue production the small loop order of upper channel.
Small loop is made, and monitors the Production Time of the small loop of unit.Welding machine PLC (programmable logic controller (PLC)) to
While unit issues small loop production order, start the Production Time for monitoring the small loop of unit.Its calculation formula is: X=A+B
(second).
Wherein X are as follows: the supervisory control action time of small loop
A are as follows: upper channel makes the time of small loop；
B are as follows: the surplus of monitoring alarm, preferably 2~3 seconds.
Confirm that the small loop amount of strip is greater than 500mm；Small loop production is completed, at this time machine set PLC (Programmable logical controller
Device) starting uncoiler move forwards it is out of service after 500mm.
If small loop is completed in the given time, welding machine no longer issues the vertical motion order of small loop back roll, otherwise welds
Machine issues the rising order of small loop back roll, and alarms.
Specifically, if within the X time, the small loop of unit completes, then welding machine no longer issues small loop back roll
Vertical motion order, if the small loop production of unit is not completed within the X time, then it represents that faulty, welding machine, which issues, lives
The rising order of roller is covered, and is alarmed on picture (HMI), alarm content are as follows: " entrance upper channel walks time-out automatically ".
The small loop back roll decline of entrance；The small loop back roll of entrance is fallen into place.
In addition, as shown in figure 5, the control method of welding machine strip parallel setting device of the invention further includes retreating controlling party
Method mainly comprises the steps that
When welding machine PLC (programmable logic controller (PLC)) issues backward movement order to strip parallel setting device, strip
First high speed, rear low speed are run parallel setting device, it may be assumed that
Welding machine issues backward movement order to strip parallel setting device.
Strip parallel setting device high-speed cruising.
When encountering high low speed switching point, the operation of strip parallel setting device low speed.
When encountering off-line sensors, by certain time-delay, welding machine PLC (programmable logic controller (PLC)) is adjusted in parallel to strip
Device sending is ceased and desisted order.Delay time is preferably 0.1~0.3 second.
The high low speed switching point adjustment selection of strip parallel setting device has at following 2 points:
1. to fully consider strip parallel setting device running stability.Therefore, the work of welding machine strip parallel setting device
Skill parameter are as follows: high speed are as follows: 500mm/3 seconds；Low speed are as follows: 500mm/18 seconds.
2. to consider that welder walks the overall process time as small as possible occupied needed for entrance switches automatically, be conducive to
Set steady reliability service.Therefore, the high low speed switching point of strip parallel setting device is preferably 800~900mm.
The retrogressing control of strip parallel setting device can make strip adjust in parallel using " delay stops " control model
Device and off-line sensors faying face reach 1/2 or more, it is ensured that off-line sensors signal stabilization.
In conclusion the present invention can have it is below the utility model has the advantages that
1. the present invention can change in the past since the small tower-loop control of strip parallel setting device uses " synchronously control " mould
Welding machine entrance walks frequent alarm automatically caused by formula, so that the shortcomings that strip parallel setting device cannot normally be put into.Weldering
Weld shape is good after machine welding, so that it is guaranteed that weld seam passes through stove, unit will not cause to shut down because of sideslip therefore
Barrier.
2. the present invention can change in the past since strip parallel setting device cannot normally be put into, by welding the strip formed
The shortcomings that weld seam causes rotary shear equipment that cannot normally put at camber shape.Rotary shear equipment can normally be put into, unit energy
Finished product is directly produced, ensures that the process logistics of cold rolling mill is in the state of efficient balance.
3. the present invention can change in the past since the backward movement control of strip parallel setting device uses " inertia control "
Mode, so that strip parallel setting device and the faying face of off-line sensors be less than 1/3, the shortcomings that so as to cause compressor emergency shutdown.
Strip parallel setting device and the faying face of off-line sensors can achieve 1/2 or more, and the signal stabilization of off-line sensors is reliable,
Unit will not be shut down because of welding machine " HOME POSITION " (home position) dropout, it is ensured that stable operation of unit.
Below for a thickness of 0.25~2.3mm, the strip that width is 700~1630mm, to further illustrate this hair
Bright technical solution.
In small loop control method, the small loop Production Time of up/down channel strip parallel setting device is 7 seconds, prison
Control alarm surplus is selected as 2 seconds, therefore the monitoring period of up/down channel strip parallel setting device is set as 9 seconds.It is parallel to export strip
The small loop Production Time for adjusting device is 4 seconds, and monitoring alarm surplus is selected as 2 seconds, therefore outlet side strip parallel setting device
Monitoring period be set as 6 seconds.
In fallback control method, the high low speed switching point of strip parallel setting device is preferably 850mm, and delay time is preferred
Are as follows: 0.2 second, so that strip parallel setting device and off-line sensors faying face reach 1/2 or more, it is ensured that off-line sensors signal
Stablize.
As shown in fig. 6, the parallel regulating device operating principle of above-mentioned strip are as follows: motor 15 drives strip parallel by screw rod 16
The frame 17 of regulating device moves forwards, and slows down and stops when grating 18 detects strip, the folder of the parallel regulating device of strip
Pincers 19 clamp strip, using P.A.D1 and P.A.D2 encoder 20 counting come calculated location value, make to adjust P.A.D
The center of strip and the center parallel of unit, motor 15 drive 17 frame fall back of frame by screw rod 16, utilize encoder 20
Reading carries out high low speed switching to the parallel regulating device of strip (P.A.D), encounters out of service after off-line sensors 21.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, as long as the change in spirit of the invention, to embodiment described above
Change, modification will all be fallen within the scope of claims of the present invention.
Claims (4)
1. a kind of control method of welding machine strip parallel setting device, which is characterized in that including the small loop of entrance upper channel and enter
The control method of the mouth small loop of lower channel, and the control of the control method of the small loop of entrance lower channel and the small loop of entrance upper channel
Method processed is identical, the control method of the small loop of entrance upper channel are as follows:
Welding machine issues the production small loop order of entrance upper channel to unit；
The small loop of entrance upper channel is made, and monitors the Production Time of the small loop of unit inlet upper channel；
Confirm that the small loop amount of strip entrance upper channel is greater than 500mm；
Complete the small loop production of entrance upper channel；
If the small loop of entrance upper channel is completed in the given time, welding machine no longer issues the rising of the small loop back roll of entrance upper channel
Action command；The small loop back roll decline of entrance upper channel；The small loop back roll of entrance upper channel is fallen into place；
If the small loop of entrance upper channel does not complete in the given time, welding machine issues the rising life of the small loop back roll of entrance upper channel
It enables, and alarms；
The alarm is 2~3 seconds.
2. the control method of welding machine strip parallel setting device as described in claim 1, which is characterized in that further include retreating control
Method processed:
Welding machine issues backward movement order to strip parallel setting device；
Strip parallel setting device high-speed cruising；
When encountering high low speed switching point, the operation of strip parallel setting device low speed；
When encountering off-line sensors, by certain time-delay, welding machine is ceased and desisted order to the sending of strip parallel setting device.
3. the control method of welding machine strip parallel setting device as claimed in claim 2, which is characterized in that the delay time
It is 0.1~0.3 second.
4. the control method of welding machine strip parallel setting device as claimed in claim 2, which is characterized in that the strip is parallel
The adjustment high low speed switching point of device is 800~900mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610093945.1A CN107097021B (en) | 2016-02-19 | 2016-02-19 | The control method of welding machine strip parallel setting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610093945.1A CN107097021B (en) | 2016-02-19 | 2016-02-19 | The control method of welding machine strip parallel setting device |
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| CN107097021A CN107097021A (en) | 2017-08-29 |
| CN107097021B true CN107097021B (en) | 2019-02-05 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101311853A (en) * | 2007-05-21 | 2008-11-26 | 上海宝信软件股份有限公司 | Device of band steel continuous production unit for reducing front and back band steel welding time and method |
| CN102527720A (en) * | 2011-12-07 | 2012-07-04 | 鞍钢股份有限公司 | Control system and method of multi-roll straightening machine of cold-rolling recoiling unit |
| CN103088354A (en) * | 2011-10-31 | 2013-05-08 | 上海宝信软件股份有限公司 | Control method for eliminating strip steel bending-crease defect |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3626515B2 (en) * | 1994-09-07 | 2005-03-09 | 新日本製鐵株式会社 | Continuous press machine |
| JPH08132121A (en) * | 1994-11-11 | 1996-05-28 | Nkk Corp | Method for operating process line |
| JP4808668B2 (en) * | 2007-04-17 | 2011-11-02 | 新日本製鐵株式会社 | Steel plate tension control method and continuous rolling system control method |
| JP5717117B2 (en) * | 2009-06-11 | 2015-05-13 | オリイメック株式会社 | Strip material feeder |
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2016
- 2016-02-19 CN CN201610093945.1A patent/CN107097021B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101311853A (en) * | 2007-05-21 | 2008-11-26 | 上海宝信软件股份有限公司 | Device of band steel continuous production unit for reducing front and back band steel welding time and method |
| CN103088354A (en) * | 2011-10-31 | 2013-05-08 | 上海宝信软件股份有限公司 | Control method for eliminating strip steel bending-crease defect |
| CN102527720A (en) * | 2011-12-07 | 2012-07-04 | 鞍钢股份有限公司 | Control system and method of multi-roll straightening machine of cold-rolling recoiling unit |
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