CN105618596A - Control method and equipment for suturing and centering thin strip steel for continuous annealing furnace - Google Patents
Control method and equipment for suturing and centering thin strip steel for continuous annealing furnace Download PDFInfo
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- CN105618596A CN105618596A CN201410697057.1A CN201410697057A CN105618596A CN 105618596 A CN105618596 A CN 105618596A CN 201410697057 A CN201410697057 A CN 201410697057A CN 105618596 A CN105618596 A CN 105618596A
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Abstract
The invention relates to the technical field of strip steel rolling, in particular to a control method and equipment for suturing and centering thin strip steel for a continuous annealing furnace. According to the control method and equipment, centering devices and side measuring devices are respectively adopted in the front and the back of suturing equipment, the centering devices are mainly used for detecting whether the center position of the strip steel moving forwards and the center position of the strip steel moving backwards are located in the center position of a unit, and the side measuring devices are mainly used for detecting whether the strip steel moving forwards and the strip steel moving backwards are placed right, namely whether the center line of the strip steel is parallel with the center line of the unit; a horizontal-moving hydraulic cylinder and a rotating hydraulic cylinder are respectively installed in front and back of the suturing equipment, the strip steel in front of the suturing equipment and the strip steel in back of the suturing equipment can be placed right and centered through cooperation between a first correction roller and a second correction roller, the suturing accuracy can be improved greatly, the strip breakage risk of the unit is lowered, and production is more smooth. According to the control method and equipment, the technical problems that existing control methods are poor in suturing accuracy and the strip breakage risk exists especially when the strip steel in front and the strip steel in back are different in width are solved.
Description
Technical field
The present invention relates to belt steel rolling technical field, specifically a kind of continuous annealing furnace Thin Strip Steel sews up control method and the equipment of centering.
Background technology
Domestic Ge great steel mill cold-rolling pickling unit all devises longer production line, it is very big that it controls difficulty, it is mainly reflected in the band operating on production line in producing continuously and should control in certain lateral extent, if sideslip may result in the damage of product or the damage of the equipment of production, production is made not carry out, in order to avoid strip running deviation, centering of strip steel device is installed in production line appropriate location, so that strip steel ensure that in the unit on heart line, centralising device is arranged in a gage frame, can pass gage frame during strip steel uncoiling threading.
In the cold rolling part that strip produces, strip is to be existed by the form of coil of strip, and by uncoiler roll, central sections is heated, atmosphere is penetrated into and soda acid such as washes at the operation, then batches at coiling machine. In order to ensure continuous production, it is necessary to make uncoiler has all the time volume, by the magnetic tape trailer of first volume and next volume take the lead sew up, make unit remain logical board status. Because strip steel is relatively thin, adopt the method installing centralising device before and after tradition, during correction, strip steel can arch upward and cannot make to take the lead to swing to center, and the crooked of strip steel itself cannot be solved, simply at Alignment measuring framework place, strip steel is centrally located at gage frame center, so that front and back band steel exists an angle after sewing up, make seam place each point discontinuity, it is easy to cause and be close in stove and broken belt.
So in actual production process, usually carrying out manual measurement centering, but artificial centering there is also problem: the problem that still cannot solve to there is angle after front and back band steel is sewed up, and accuracy of alignment is poor, particularly during front and back band steel width difference; There is potential safety hazard.
Summary of the invention
It is an object of the invention to provide a kind of continuous annealing furnace Thin Strip Steel and sew up control method and the equipment of centering, the present invention is each before and after robotic suturing device adopts one group of centralising device and one group of survey limit device, one traversing hydraulic cylinder of each installation and a rotating hydraulic cylinder before and after robotic suturing device simultaneously, strip steel is adjusted by rotating hydraulic cylinder and traversing hydraulic cylinder, control strip steel to ajust and centering, whether in the unit centralising device detects move ahead strip steel and rear row strip steel centre bit heart position, survey limit device to predominantly detect and move ahead strip steel and whether rear row strip steel is ajusted, improve accuracy of alignment, reduce potential safety hazard, accuracy of alignment in order to solve existing control method is poor, and there is the technical problem of broken belt risk in unit.
For achieving the above object, the solution of the present invention is: a kind of continuous annealing furnace Thin Strip Steel sews up the control method of centering, described control method is provided with move ahead centralising device and the survey limit device that moves ahead in the front side of rolling unit robotic suturing device, after the rear side of described robotic suturing device is provided with, row centralising device and rear row survey limit device, two groups of centralising devices are arranged near described robotic suturing device, two groups are provided with traversing hydraulic cylinder and rotating hydraulic cylinder between centralising device and robotic suturing device, two groups of centralising devices and two groups of fore sides surveying limit device and transmission side are respectively provided with seeks limit probe,
Described control method specifically includes following steps:
(1) when rear row strip steel starts threading, control system sends instruction, controlling the traversing hydraulic cylinder before and after robotic suturing device and rotating hydraulic cylinder returns to middle position, two groups of centralising devices and two groups of initial positions seeking limit probe surveying device both sides, limit are symmetrical relative to unit centre line;
(2) when rear row strip steel threading is to robotic suturing device region, control system sends instruction, move ahead described in control survey that limit device and rear row survey limit device seek limit probe respectively to moving ahead strip steel and rear row strip steel seeks limit detection, current line/rear row survey limit device seek limit probe detection to moving ahead/rear row steel edge portion time, calculating moves ahead the width of strip steel and rear row strip steel;
(3) width according to move ahead strip steel and rear row strip steel, control system controls to move ahead/rear row centralising device both sides seek limit probe from initial position, move to the distance of unit centre line equal to moving ahead/the position of rear row strip width half, and feed back OK signal to control system;
(4) control system issues instructions to move ahead survey limit device and rear row survey limit device, described move ahead/rear row survey device both sides, limit seek limit probe from moving ahead/edge of rear row strip steel, move to the distance of unit centre line equal to moving ahead/the position of rear row strip width half, and feed back OK signal to control system;
(5) control system sends instructions to two groups of traversing hydraulic cylinders and the rotating hydraulic cylinder of robotic suturing device both sides, by controlling the action of two groups of traversing hydraulic cylinders, makes the move ahead center of strip steel and rear row strip steel, gage frame place overlap with unit centre; By controlling the action of two groups of rotating hydraulic cylinders, make to move ahead/rear row centralising device and moving ahead/rear row surveys the limit probe of seeking of limit device and be concurrently detected/the edge of rear row strip steel that moves ahead, control to move ahead strip steel and rear row strip steel is ajusted;
(6) if move ahead/rear row centralising device detect move ahead/center of rear row strip steel overlaps with unit centre, move ahead simultaneously/rear row survey the detection of limit device move ahead/rear row strip steel ajusts, then complete to move ahead the centering of strip steel and rear row strip steel, send centering and complete signal to control system, and enter step (7), otherwise continue executing with step (5);
(7) control system receives after centering completes signal, controls robotic suturing device and carries out sewing up operation to rear row strip steel and the strip steel that moves ahead.
In described step (2), the width of move ahead strip steel or rear row strip steel is: y1=x1+x2+ n, wherein, x1Survey limit device for moving ahead or rear row surveys the distance moved when limit device fore side seeks limit probe detection to steel edge portion, x2Survey limit device for moving ahead or rear row survey the distance moved when limit device transmission side seeks limit probe detection to steel edge portion, n be move ahead survey limit device or rear row survey device both sides, limit seek limit pop one's head between initial distance.
In described step (3), the limit probe displacement of seeking of move ahead centralising device and rear row centralising device both sides is y2=(x1+x2)/2��
In described step (4), the limit probe displacement of seeking surveying limit device and rear row survey device both sides, limit that moves ahead is y3=(x1-x2)/2��
In described step (6), the determination methods that the center of move ahead strip steel and rear row strip steel overlaps with unit centre is: gage frame place moves ahead strip steel or the rear row strip steel center deviation with unit centre position less than setting value, it may be assumed that | (m1-m2) | < ��, wherein, m1For strip steel or rear row strip steel center position, the m of moving ahead2For unit centre point position, �� is m1And m2The maximum permissible value of deviation.
In described step (6), moving ahead strip steel and rear row strip steel is ajusted, the strip steel that namely moves ahead is parallel with unit centre line with rear row strip steel centrage, and the strip steel that the moves ahead determination methods parallel with unit centre line with rear row strip steel centrage is: | (m3-m4) | < ��, m3For moving ahead/and the position of rear row centrage, m4For the position of unit centre line, �� is m3And m4The maximum permissible value of deviation.
The present invention also provides for a kind of control equipment adopting above-mentioned control method, described control equipment include moving ahead centralising device, rear row centralising device, the survey limit device that moves ahead, rear row surveys limit device and control system, described moving ahead surveys limit device and the centralising device that moves ahead is arranged at the front side of unit robotic suturing device, for the strip steel that moves ahead is carried out centering control, described rear row centralising device and rear row are surveyed limit device and are arranged at the rear side of robotic suturing device, for rear row strip steel is carried out centering control, described in move ahead centralising device and rear row centralising device arrange near robotic suturing device;
Between described rear row centralising device and robotic suturing device and described moving ahead be provided with traversing hydraulic cylinder and rotating hydraulic cylinder between centralising device and robotic suturing device, described control system controls move ahead centralising device, rear row centralising device, the survey limit device that moves ahead, rear row of connection and surveys limit device, two groups of traversing hydraulic cylinders and two groups of rotating hydraulic cylinders.
Described control equipment is additionally provided with the first deviation rectification roller and the second deviation rectification roller, described first deviation rectification roller is at robotic suturing device and moves ahead between aligning equipment, described second deviation rectification roller is between robotic suturing device and rear row aligning equipment, described traversing hydraulic cylinder and rotating hydraulic cylinder are arranged on the under(-)chassis of the first deviation rectification roller and the second deviation rectification roller, and the under(-)chassis of described first deviation rectification roller and the second deviation rectification roller is movable.
The head of the described strip steel that moves ahead is provided with the first pressure roller, and the afterbody of described rear row strip steel is provided with the second pressure roller, and the under(-)chassis of described first pressure roller and the second pressure roller is fixed.
The beneficial effect that the present invention reaches: the present invention is each before and after robotic suturing device adopts one group of centralising device and one group of survey limit device, whether in the unit centralising device mainly for detection of strip steel and the rear row strip steel centre bit heart position of moving ahead, surveying limit device to predominantly detect and move ahead strip steel and whether rear row strip steel is ajusted, namely whether strip steel centrage is parallel with unit centre line. One traversing hydraulic cylinder of each installation and a rotation shape hydraulic cylinder before and after robotic suturing device simultaneously, by the cooperation of the first deviation rectification roller and the second deviation rectification roller, robotic suturing device front and back band steel is made to ajust and centering, it is possible to precision is sewed up in bigger raising, reduce the broken belt risk of unit, make production more direct motion.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of the present invention;
Fig. 2 is the scheme of installation of the traversing hydraulic cylinder of the present invention and rotating hydraulic cylinder;
Fig. 3 is the method flow diagram of the present invention;
Fig. 4 be centralising device of the present invention seek limit probe mobile before schematic diagram;
Fig. 5 be centralising device of the present invention seek limit probe mobile after schematic diagram;
Fig. 6 be the present invention survey limit device seek limit probe mobile before schematic diagram;
Fig. 7 be the present invention survey limit device seek limit probe mobile after schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further detailed explanation.
As shown in Figure 1, the control equipment of the present invention is provided with the first pressure roller at the head of the strip steel that moves ahead, the afterbody of rear row strip steel is provided with the second pressure roller, at ordinary times the first pressure roller and the second pressure roller are lifted, when carrying out centering operation, first pressure roller and the second pressure roller being depressed, the under(-)chassis of the first pressure roller and the second pressure roller is fixed, only serves the effect of fixing strip steel.
The afterbody of strip steel of moving ahead arranges the first deviation rectification roller, and the head of rear row strip steel arranges the second deviation rectification roller, and the under(-)chassis of the first deviation rectification roller and the second deviation rectification roller is movable. Such as Fig. 2, the under(-)chassis of the first deviation rectification roller and the second deviation rectification roller is also equipped with 2 groups of hydraulic cylinders, i.e. traversing hydraulic cylinder and rotating hydraulic cylinder, first deviation rectification roller and the second deviation rectification roller carry out traversing with the action of traversing hydraulic cylinder and rotating hydraulic cylinder and rotate, cooperation by the first deviation rectification roller and the second deviation rectification roller, make to move ahead strip steel and rear row strip steel does corresponding sports, make robotic suturing device front and back band steel ajust and centering, improve accuracy of alignment and safety.
The side, front and back of robotic suturing device is provided with, near the position of first deviation rectification roller the second deviation rectification roller, move ahead centralising device and rear row centralising device, the side, front and back of robotic suturing device is additionally provided with move ahead survey limit device and rear row survey limit device near the position of the first pressure roller and the second pressure roller, whether in the unit move ahead centralising device and rear row centralising device mainly for detection of strip steel and the rear row strip steel centre bit heart position of moving ahead, moving ahead survey limit device and rear row is surveyed limit device and predominantly detected and move ahead strip steel and whether rear row strip steel is ajusted, namely whether strip steel centrage is parallel with unit centre line.
The control equipment of the present invention includes control system, control system is used for sending instruction, control to move ahead centralising device, rear row centralising device, move ahead survey limit device, rear row surveys limit device and is arranged on the action of the traversing hydraulic cylinder on the first deviation rectification roller and the second deviation rectification roller and rotating hydraulic cylinder.
As it is shown on figure 3, the specific works process of the present invention is as follows:
1, when a new coiled strip steel threading, control system sends instruction in surely, makes before and after robotic suturing device two groups of traversing hydraulic cylinders and rotation shape hydraulic cylinder return to centred position.
2, when a new coiled strip steel as rear row strip steel threading to robotic suturing device region time, move ahead strip steel and rear row strip steel in place in robotic suturing device both sides, control system sends instruction, move ahead and survey limit device and rear row and survey the limit probe of seeking of limit device and proceed by and seek limit detection, what current line surveyed that limit device and rear row survey limit device seeks limit probe detection after the edge of each correspondence strip steel, by respective stroke, calculate the width of strip steel.
As shown in Figure 4, move ahead and survey limit device, rear row surveys limit device, move ahead centralising device and to seek the initial position of limit probe symmetrical relative to unit centre line in rear row centralising device both sides, n is two initial distances sought between the probe of limit, x1, x2 respectively two seek the distance that limit probe detection need to move to steel edge portion, therefore, strip width isy1=x1+x2+n. As shown in Figure 6, move ahead the edge moving to strip steel when seeking limit probe detection to steel edge portion surveying limit device and rear row survey limit device.
3, the width according to calculated move ahead strip steel and rear row strip steel, the limit probe of seeking of centralising device and rear row centralising device both sides of moving ahead moves to the direction away from unit centre line respectively, what make to move ahead centralising device and rear row centralising device seeks limit probe and the distance of the unit centre line half equal to respective corresponding strip width, the distance of movement is (x1+x2)/2, Fig. 4 is for before moving, what move ahead centralising device and rear row centralising device seeks limit probe initial position, Fig. 5 for after mobile, move ahead centralising device and rear row centralising device seek limit probe positions.
4, moving ahead centralising device and after rear row centralising device moves into place, feedback OK signal is to control system.
5, control system sends instructions to move ahead survey limit device and rear row survey limit device, control two groups of limit probes of seeking surveying limit device to move, two groups of limit probes of seeking surveying limit device move to the half being equal to each corresponding strip width with the distance of unit centre line, displacement is y2=(x1-x2)/2, Fig. 6 is for before moving, move ahead survey that limit device and rear row survey limit device seek limit probe positions, Fig. 7 for after mobile, move ahead survey that limit device and rear row survey limit device seek limit probe positions.
Through step 3��step 5, move ahead/rear row centralising device and moving ahead/rear row surveys the limit probe of seeking of limit device and forms former and later two rectangles, the width of two rectangles is respective correspondence and moves ahead/the width of rear row, if will move ahead, strip steel and rear row strip steel are by traversing and rotation, so as to be completely superposed with corresponding rectangle, illustrate to move ahead strip steel and rear row strip steel centering ajust.
6, moving ahead survey limit device and rear row is surveyed after limit device moves into place, feedback OK signal is to control system.
7, control system sends control instruction, control traversing hydraulic cylinder action, make to move ahead strip steel and rear row strip steel center overlaps with unit centre, criterion is | (m1-m2) | < ��, m1 is strip steel or the rear row strip steel center of moving ahead, and m2 is unit centre position, �� is the maximum permissible value that both differ, generally take 10mm, if the two difference is less than ��, then illustrate that strip steel center overlaps with unit centre.
8, control system and control rotating hydraulic cylinder action, make to move ahead/rear row centralising device and moving ahead/rear row surveys the limit probe of seeking of limit device and seeks/the edge of rear row strip steel that moves ahead simultaneously, now, move ahead/edge of rear row strip steel overlaps with above-mentioned rectangle, move ahead/rear row strip steel ajusts.
After step 7, move ahead/rear row strip steel center is probably consistent with unit centre, but move ahead/rear row strip steel is probably distortion, accordingly, it would be desirable to by the edge of strip steel is measured, just rotate back to rotating hydraulic cylinder drive strip steel. After rotating back to and just operating, move ahead/center and the unit centre of rear row strip steel may occur deviation again, it is therefore desirable to rejudge move ahead/whether rear row strip steel center overlap with unit centre, if deviation is relatively greatly, then re-executes step 7.
9, by the continuous adjustment to step 7,8 so that move ahead strip steel and rear row strip steel center overlaps with unit centre, and ajust, it is achieved centering operation, and return centering and complete signal to control system.
10, control system sends centering and completes instruction to robotic suturing device, controls robotic suturing device and carries out sewing up operation.
Following table is to adopt manually to the accuracy comparison neutralizing automatic centering of the present invention:
The present invention is each before and after robotic suturing device adopts one group of centralising device and one group of survey limit device, whether in the unit centralising device mainly for detection of strip steel and the rear row strip steel centre bit heart position of moving ahead, surveying limit device to predominantly detect and move ahead strip steel and whether rear row strip steel is ajusted, namely whether strip steel centrage is parallel with unit centre line. One traversing hydraulic cylinder of each installation and a rotation shape hydraulic cylinder before and after robotic suturing device simultaneously, by the cooperation of the first deviation rectification roller and the second deviation rectification roller, robotic suturing device front and back band steel is made to ajust and centering, it is possible to precision is sewed up in bigger raising, reduce the broken belt risk of unit, make production more direct motion.
Claims (9)
1. the control method of a continuous annealing furnace Thin Strip Steel stitching centering, it is characterized in that: described control method is provided with move ahead centralising device and the survey limit device that moves ahead in the front side of rolling unit robotic suturing device, after the rear side of described robotic suturing device is provided with, row centralising device and rear row survey limit device, two groups of centralising devices are arranged near described robotic suturing device, two groups are provided with traversing hydraulic cylinder and rotating hydraulic cylinder between centralising device and robotic suturing device, two groups of centralising devices and two groups of fore sides surveying limit device and transmission side are respectively provided with seeks limit probe;
Described control method specifically includes following steps:
(1) when rear row strip steel starts threading, control system sends instruction, controlling the traversing hydraulic cylinder before and after robotic suturing device and rotating hydraulic cylinder returns to middle position, two groups of centralising devices and two groups of initial positions seeking limit probe surveying device both sides, limit are symmetrical relative to unit centre line;
(2) when rear row strip steel threading is to robotic suturing device region, control system sends instruction, move ahead described in control survey that limit device and rear row survey limit device seek limit probe respectively to moving ahead strip steel and rear row strip steel seeks limit detection, current line/rear row survey limit device seek limit probe detection to moving ahead/rear row steel edge portion time, calculating moves ahead the width of strip steel and rear row strip steel;
(3) width according to move ahead strip steel and rear row strip steel, control system controls to move ahead/rear row centralising device both sides seek limit probe from initial position, move to the distance of unit centre line equal to moving ahead/the position of rear row strip width half, and feed back OK signal to control system;
(4) control system issues instructions to move ahead survey limit device and rear row survey limit device, described move ahead/rear row survey device both sides, limit seek limit probe from moving ahead/edge of rear row strip steel, move to the distance of unit centre line equal to moving ahead/the position of rear row strip width half, and feed back OK signal to control system;
(5) control system sends instructions to two groups of traversing hydraulic cylinders and the rotating hydraulic cylinder of robotic suturing device both sides, by controlling the action of two groups of traversing hydraulic cylinders, makes the move ahead center of strip steel and rear row strip steel, gage frame place overlap with unit centre; By controlling the action of two groups of rotating hydraulic cylinders, make to move ahead/rear row centralising device and moving ahead/rear row surveys the limit probe of seeking of limit device and be concurrently detected/the edge of rear row strip steel that moves ahead, control to move ahead strip steel and rear row strip steel is ajusted;
(6) if move ahead/rear row centralising device detect move ahead/center of rear row strip steel overlaps with unit centre, move ahead simultaneously/rear row survey the detection of limit device move ahead/rear row strip steel ajusts, then complete to move ahead the centering of strip steel and rear row strip steel, send centering and complete signal to control system, and enter step (7), otherwise continue executing with step (5);
(7) control system receives after centering completes signal, controls robotic suturing device and carries out sewing up operation to rear row strip steel and the strip steel that moves ahead.
2. control method according to claim 1, it is characterised in that in described step (2), the width of move ahead strip steel or rear row strip steel is: y1=x1+x2+ n, wherein, x1Survey limit device for moving ahead or rear row surveys the distance moved when limit device fore side seeks limit probe detection to steel edge portion, x2Survey limit device for moving ahead or rear row survey the distance moved when limit device transmission side seeks limit probe detection to steel edge portion, n be move ahead survey limit device or rear row survey device both sides, limit seek limit pop one's head between initial distance.
3. control method according to claim 2, it is characterised in that in described step (3), the limit probe displacement of seeking of move ahead centralising device and rear row centralising device both sides is y2=(x1+x2)/2��
4. control method according to claim 2, it is characterised in that in described step (4), the limit probe displacement of seeking surveying limit device and rear row survey device both sides, limit that moves ahead is y3=(x1-x2)/2��
5. control method according to claim 1, it is characterized in that, in described step (6), the determination methods that the center of strip steel and rear row strip steel of moving ahead overlaps with unit centre is: gage frame place moves ahead strip steel or the rear row strip steel center deviation with unit centre position less than setting value, it may be assumed that | (m1-m2) | < ��, wherein, m1For strip steel or rear row strip steel center position, the m of moving ahead2For unit centre point position, �� is m1And m2The maximum permissible value of deviation.
6. control method according to claim 1, it is characterized in that, in described step (6), move ahead strip steel and rear row strip steel is ajusted, namely the strip steel that moves ahead is parallel with unit centre line with rear row strip steel centrage, and the strip steel that the moves ahead determination methods parallel with unit centre line with rear row strip steel centrage is: | (m3-m4) | < ��, m3For moving ahead/and the position of rear row centrage, m4For the position of unit centre line, �� is m3And m4The maximum permissible value of deviation.
7. the control equipment adopting control method as claimed in claim 1, it is characterized in that: described control equipment includes the centralising device that moves ahead, rear row centralising device, move ahead survey limit device, rear row is surveyed limit device and controls system, described moving ahead surveys limit device and the centralising device that moves ahead is arranged at the front side of unit robotic suturing device, for the strip steel that moves ahead is carried out centering control, described rear row centralising device and rear row are surveyed limit device and are arranged at the rear side of robotic suturing device, for rear row strip steel is carried out centering control, described centralising device and the rear row centralising device of moving ahead is arranged near robotic suturing device,
Between described rear row centralising device and robotic suturing device and described moving ahead be provided with traversing hydraulic cylinder and rotating hydraulic cylinder between centralising device and robotic suturing device, described control system controls move ahead centralising device, rear row centralising device, the survey limit device that moves ahead, rear row of connection and surveys limit device, two groups of traversing hydraulic cylinders and two groups of rotating hydraulic cylinders.
8. control equipment according to claim 7, it is characterized in that, described control equipment is additionally provided with the first deviation rectification roller and the second deviation rectification roller, described first deviation rectification roller is at robotic suturing device and moves ahead between aligning equipment, described second deviation rectification roller is between robotic suturing device and rear row aligning equipment, described traversing hydraulic cylinder and rotating hydraulic cylinder are arranged on the under(-)chassis of the first deviation rectification roller and the second deviation rectification roller, and the under(-)chassis of described first deviation rectification roller and the second deviation rectification roller is movable.
9. control equipment according to claim 7, it is characterised in that described in the move ahead head of strip steel be provided with the first pressure roller, the afterbody of described rear row strip steel is provided with the second pressure roller, and the under(-)chassis of described first pressure roller and the second pressure roller is fixed.
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| CN113070410A (en) * | 2021-04-20 | 2021-07-06 | 大连诚通工程技术有限公司 | Full-automatic plate belt sewing machine and control method |
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| CN108931476A (en) * | 2017-05-25 | 2018-12-04 | 宝山钢铁股份有限公司 | A method of differentiating orientation silicon steel seam quality |
| CN108931476B (en) * | 2017-05-25 | 2020-10-27 | 宝山钢铁股份有限公司 | Method for judging seam quality of oriented silicon steel seam |
| CN109079040A (en) * | 2018-09-30 | 2018-12-25 | 重庆望变电气（集团）股份有限公司 | Silicon steel sheet stitching devices |
| CN109079040B (en) * | 2018-09-30 | 2019-12-20 | 重庆望变电气（集团）股份有限公司 | Silicon steel sheet sewing device |
| CN111872679A (en) * | 2020-08-10 | 2020-11-03 | 中石化石油机械股份有限公司沙市钢管分公司 | Automatic strip steel centering, cutting and welding device and method for spiral steel pipe production line |
| CN111872679B (en) * | 2020-08-10 | 2022-04-19 | 中石化石油机械股份有限公司沙市钢管分公司 | Method for automatically centering, cutting and welding strip steel on spiral steel pipe production line |
| CN113070410A (en) * | 2021-04-20 | 2021-07-06 | 大连诚通工程技术有限公司 | Full-automatic plate belt sewing machine and control method |
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