CN104550326A - Periodical longitudinal variable-thickness plate straightener - Google Patents
Periodical longitudinal variable-thickness plate straightener Download PDFInfo
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- CN104550326A CN104550326A CN201310497174.9A CN201310497174A CN104550326A CN 104550326 A CN104550326 A CN 104550326A CN 201310497174 A CN201310497174 A CN 201310497174A CN 104550326 A CN104550326 A CN 104550326A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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Abstract
The invention belongs to the technical field of cold rolled strip straightening and particularly relates to a periodical longitudinal variable-thickness plate straightener. The straightener comprises a thickness measuring roll, a speed measuring roll, pinch rolls, work rolls, an upper work roll tilting device, an upper work roll verticality adjustment device and an equipment frame. The work rolls include upper work rolls and lower work rolls, the lower work rolls are mounted on the equipment frame, each upper work roll comprises an upper work roll tilt adjustment part and an upper work roll verticality adjustment part arranged in a front-back manner, each upper work roll tilt adjustment part is connected with the upper work roll tilting device, each upper work roll verticality adjustment part is connected with the upper work roll verticality adjustment device, and the upper work roll tilting device and the upper work roll verticality adjustment part are connected with hydraulic cylinders respectively; the pinch rolls are arranged in front of the upper work rolls and the lower work rolls, and the thickness measuring roll and the speed measuring roll are arranged in front of the pinch rolls, arranged in longitudinal symmetry according to a work center line and driven to rotate by depending on friction with strips. The straightener meets the requirement on alternating straightening of different-thickness parts of plates and the requirement on precise straightening of the different-thickness parts of the plates.
Description
Technical field
The invention belongs to cold rolled sheet steel straightening technology field, specifically a kind of periodic longitudinal variable-thickness sheet material straightener.
Background technology
Rolled piece, in rolling, cooling and transportation, due to the impact of various factors, often produces various shape defect.Such as sheet material and band can produce buckling, transverse curvature, middle wooden dipper song and limit wave type and camber.In order to eliminate these defects, rolled piece needs to align.And straightener is exactly the equipment realizing this straightening process.Roll leveller is the Strip straightener that current range of application is the widest.Its Levelling principle is that sheet material continues through and is staggered and the roller be rotating, obtain repeatedly repeatedly reverse bending, if the drafts adjustment of roller suitably, the sheet material with different original curvature can be made to become rapidly single curvature, gradually by sheet material leveling, thus reach the object improving Strip surface quality and dimensional accuracy.
The various types of roll levellers being widely used in cold rolled sheet finishing are at present all the alignings for equal thickness sheet material, in the straightening process of reality, rectify when examination the position terminating to determine each smoothing roll just no longer to change later, carry out alternating bending to stack pile sheet material continuously, sheet material is through the repeatedly back-flexing of staggered smoothing roll and leveling gradually.
Existing straightener owing to dynamically can not change the position of smoothing roll in straightening process, this is to periodic longitudinal variable-thickness sheet material (namely length direction periodically occurs thick district, transition region and Bao Qu), and especially the aligning of the sheet material that longitudinal thickness difference is larger brings very large difficulty.If straightening roll press quantity is according to the setting of thick district thickness, thin district does not littlely have leveling effect owing to depressing; If straightening roll press quantity is according to the setting of thin district thickness, thick district is due under excessive pressure, and leveling effect is also bad, also easily occurs impression in addition, affect surface quality on surface, thick district; If straightening roll press quantity sets according to a certain thickness in Hou Qu and thin interval, to a certain degree align although Hou Qu and thin district have, no matter thin district or its leveling effect of thick district all can not be fine.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of periodic longitudinal variable-thickness sheet material straightener.This device adapts to the alternation aligning requirement of sheet material different-thickness position, adapts to sheet material different-thickness position essence and rectifys requirement.
To achieve these goals, the present invention is by the following technical solutions:
A kind of periodic longitudinal variable-thickness sheet material straightener, comprise thickness measuring roller, velocity measuring roller, pinch roll, working roll, top working roll tilting gearing, top working roll vertical-adjustment device and device framework, wherein working roll comprises and is arranged at top working roll above and below work center line and bottom working roll, described bottom working roll is installed on device framework, before described top working roll comprises, the top working roll tilt adjustments part adjustment member vertical with top working roll of rear setting, described top working roll tilt adjustments part is connected with top working roll tilting gearing, the vertical adjustment member of described top working roll is connected with top working roll vertical-adjustment device, described top working roll tilting gearing and top working roll vertical-adjustment device are connected to hydraulic jack, described top working roll tilting gearing carries out the adjustment at drafts and angle of inclination to top working roll tilt adjustments part by the driving of hydraulic jack, described top working roll vertical-adjustment device carries out drafts adjustment by the driving of hydraulic jack to the vertical adjustment member of top working roll, described pinch roll is arranged at the front of top working roll and bottom working roll, comprise top pinch roll and bottom pinch roll, described bottom pinch roll is installed on device framework, and described top pinch roll is connected with hydraulic jack, and described top pinch roll is driven by hydraulic jack and rises or decline, before described thickness measuring roller and velocity measuring roller are arranged at pinch roll, and be symmetrically arranged in above and below work center line.
Described thickness measuring roller and velocity measuring roller are respectively equipped with displacement transducer and encoder, and the signal of institute's displacement sensors, encoder is connected with computer control system respectively.
Described top working roll tilting gearing is two, and be arranged at fore side and the transmission side of top working roll tilt adjustments part respectively, before the top working roll tilting gearing of fore side, rear end is connected with the 3rd hydraulic jack and the 5th hydraulic jack respectively, before the top working roll tilting gearing of transmission side, rear end is connected with the 4th hydraulic jack and the 6th hydraulic jack respectively, described two top working roll tilting gearings pass through the synchronous driving of the 3rd hydraulic jack and the 4th hydraulic jack, the synchronous driving of the 5th hydraulic jack and the 6th hydraulic jack, before top working roll sloping portion, carry out drafts adjustment respectively afterwards, realize angle of inclination adjustment simultaneously.
Described top working roll tilt adjustments part comprises six roots of sensation roller and the two ends of each roller are connected with the top working roll tilting gearing of fore side and transmission side respectively.
Described top working roll vertical-adjustment device is two and is arranged at fore side and the transmission side of the vertical adjustment member of top working roll respectively, two top working roll vertical-adjustment device are connected with the 7th hydraulic jack and the 8th hydraulic jack respectively, and described top working roll vertical-adjustment device is by the synchronous driving of the 7th hydraulic jack and the 8th hydraulic jack, carry out drafts adjustment to the vertical adjustment member of top working roll.
The vertical adjustment member of described top working roll comprises a roller, and the two ends of this roller are connected with the top working roll vertical-adjustment device of fore side and transmission side respectively.Described bottom working roll comprises nine rollers and the two ends of each roller are arranged on device framework.
The two ends of described top pinch roll are connected with the first hydraulic jack and the second hydraulic jack respectively, and described first hydraulic jack and the second hydraulic jack synchronously drive top pinch roll, make top pinch roll increase or decline.
Described working roll and pinch roll are connected with motor by Hooks coupling universal coupling II, link rod, Hooks coupling universal coupling I, gear distribution box and reductor successively.The each hydraulic jack be connected with top pinch roll, top working roll tilting gearing and top working roll vertical-adjustment device is equipped with displacement transducer, and each displacement transducer is all connected with computer control system.
Advantage of the present invention and beneficial effect are:
1. roller system of straightening machine of the present invention is all made up of working roll, can be divided into upper and lower two parts according to position.Bottom working roll portion is fixed, top working roll part is divided into again tilt adjustments part and vertical adjustment member, its tilt adjustments part can carry out drafts dynamic conditioning and angle of inclination dynamic conditioning as a whole, adapts to the alternation aligning requirement of sheet material different-thickness position; The drafts of its vertical adjustment member can dynamic conditioning separately, adapts to sheet material different-thickness position essence and rectifys requirement.
2. the present invention has a pair pinch roll before straightening operation roller, and top pinch roll position dynamic adjusts, and bottom pinch roll position is fixed; A thickness measuring roller and a velocity measuring roller was also equipped with before pinch roll, the thin district of Varying-thickness sheet material, transition region and Hou Qu can be judged qualitatively by the displacement transducer on thickness measuring roller, the speed encoder on Negotiation speed measuring roll can sheet material measurement aligning speed or aligned length.
3. the present invention is good to the leveling effect of periodic longitudinal variable-thickness sheet material.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the schematic diagram of periodic longitudinal variable-thickness sheet material;
Fig. 4 is the top view of Fig. 3;
Fig. 5 is signal detection schematic diagram of the present invention;
Fig. 6 is transmission schematic diagram of the present invention;
Fig. 7 is the schematic diagram that thin for periodic longitudinal variable-thickness sheet material district aligns by the present invention;
Fig. 8 is the schematic diagram that thick for periodic longitudinal variable-thickness sheet material district aligns by the present invention;
Fig. 9 is the schematic diagram that periodic longitudinal variable-thickness sheet material is aligned by the present invention.
Wherein: 1 is thickness measuring roller, 2 is velocity measuring roller, and 3 is pinch roll, and 4 is bottom working roll, 5 is top working roll, and 6 is top working roll tilting gearing, and 7 is top working roll vertical-adjustment device, 8 is hydraulic jack, and 9 is device framework, and 10 is thick district, 11 is transition region, and 12 is thin district, and 13 is motor, 14 is reductor, and 15 is gear distribution box, and 16 is Hooks coupling universal coupling I, 17 is link rod, and 18 is Hooks coupling universal coupling II, and 19 is working roller of straightening machine roller system.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1 and Figure 2, the present invention includes thickness measuring roller 1, velocity measuring roller 2, pinch roll 3, working roll, top working roll tilting gearing 6, top working roll vertical-adjustment device 7 and device framework 9, wherein working roll comprises and is arranged at top working roll 5 above and below work center line and bottom working roll 4.Bottom working roll 4 comprises nine rollers, and the two ends of nine rollers are all rotatably installed on device framework 9 by bearing.Top working roll 5 comprises the top working roll tilt adjustments part adjustment member vertical with top working roll of forward and backward setting, the fore side of top working roll tilt adjustments part and transmission side are respectively provided with a top working roll tilting gearing 6, and the fore side of the vertical adjustment member of top working roll and transmission side are respectively provided with a top working roll vertical-adjustment device 7.Described top working roll tilt adjustments part comprises six roots of sensation roller, and the two ends of this six roots of sensation roller are rotatably installed on the top working roll tilting gearing 6 of fore side and transmission side.At fore side, the forward and backward two ends of top working roll tilting gearing 6 are connected with the 3rd hydraulic jack 803 and the 5th hydraulic jack 805 respectively.And at transmission side, the forward and backward two ends of top working roll tilting gearing 6 are connected with the 4th hydraulic jack 804 and the 6th hydraulic jack 806 respectively.The top working roll tilting gearing 6 of fore side and transmission side passes through the synchronous driving of the 3rd hydraulic jack 803 and the 4th hydraulic jack 804, the synchronous driving of the 5th hydraulic jack 805 and the 6th hydraulic jack 806, drafts dynamic conditioning and angle of inclination dynamic conditioning are carried out to top working roll tilt adjustments part, dynamically can adapt to the alternation aligning requirement at periodic longitudinal variable-thickness sheet material different-thickness position.The vertical adjustment member of described top working roll comprises a roller, and the two ends of this roller are rotatably installed in the top working roll vertical-adjustment device 7 of fore side and transmission side.Fore side is connected with the 7th hydraulic jack 807 and the 8th hydraulic jack 808 respectively with the top working roll vertical-adjustment device 7 of transmission side, top working roll vertical-adjustment device 7 is by the synchronous driving of the 7th hydraulic jack 807 and the 8th hydraulic jack 808, carry out drafts dynamic conditioning to the vertical adjustment member of top working roll, and the essence that dynamically can adapt to periodic longitudinal variable-thickness sheet material different-thickness position rectifys requirement.
Pinch roll 3 is arranged at the front of top working roll 5 and bottom working roll 4, comprise top pinch roll and bottom pinch roll, described bottom pinch roll is rotatably installed on device framework 9, the two ends of described top pinch roll are connected with the first hydraulic jack 801 of fore side and transmission side and the second hydraulic jack 802 respectively, first hydraulic jack 801 and the second hydraulic jack 802 synchronously drive top pinch roll, make top pinch roll carry out drafts dynamic conditioning, what dynamically can adapt to periodic longitudinal variable-thickness sheet material different-thickness position pinches requirement.
The front of pinch roll 3 is provided with and is arranged symmetrically in thickness measuring roller 1 above and below work center line and velocity measuring roller 2, relies on the driven rotary that to rub with Strip.Thickness measuring roller 1 and velocity measuring roller 2 are respectively equipped with displacement transducer and speed encoder, and signal and each hydraulic jack of institute's displacement sensors, speed encoder are connected with computer control system respectively, and each hydraulic jack is connected with Hydraulic Station.The each hydraulic jack be connected with top pinch roll, top working roll tilting gearing 6 and top working roll vertical-adjustment device 7 is equipped with displacement transducer, and each displacement transducer is all connected with computer control system, as shown in Figure 5.According to the signal that the displacement transducer on thickness measuring roller 1 provides, the thick district of longitudinal variable-thickness sheet material, transition region and Bao Qu can be judged qualitatively; According to the signal that the speed encoder on velocity measuring roller 2 provides, computer control system can calculate aligning speed and aligning length in real time; The signal that speed encoder on the signal provided according to the displacement transducer on thickness measuring roller 1 and velocity measuring roller 2 provides, computer control system the thick district of computing cycle longitudinal variable-thickness sheet material, transition region and thin district can arrive time of roller system of straightening machine, and the structure of periodic longitudinal variable-thickness sheet material as shown in Figure 3, Figure 4.
As shown in Figure 6, working roll and pinch roll 3 are connected with motor 13 by Hooks coupling universal coupling II18, link rod 17, Hooks coupling universal coupling 116, gear distribution box 15 and reductor 14 successively.
Embodiment:
The present invention is arranged on the aligning workshop of certain factory, working roll 16, top working roll 7, bottom working roll 9, upper and lower interlaced arrangement, roller footpath 70mm, roll spacing 75mm, barrel length 500mm, maximum aligning speed 1500mm/s; Thickness measuring roller 1 and velocity measuring roller 2 are arranged on 500mm before straightener inlet, and the vertical adjustment member of top working roll is apart from straightener inlet 900mm.Periodic longitudinal variable-thickness sheet material material is Q235B, material yield strength is 235MPa, and Young's modulus is 203GPa.Board dimension: thick district thickness is 2mm, thick section length is 250mm; Length of transition zone is 900mm; Thin district thickness is 1mm, and thin section length is 500mm; Strip width is 300mm, and steel plates straightening speed is 300mm/s.
As Figure 7-9, concrete straightening process is as follows:
1) coil of strip threading by thin district, the initial depression Liang Youbao district THICKNESS CALCULATION of straightener, namely the entrance drafts of sloping portion is set to 1.4mm, and outlet drafts is arranged to 0.1mm, and vertical adjustment roller drafts is 0mm.When thickness measuring roller 1 detects the transition of Xiang Hou district of You Bao district, recalculate the entering of sloping portion with thick district thickness, export drafts, namely the entrance drafts of sloping portion is set to 0.8mm, outlet drafts is arranged to 0.1mm, when velocity measuring roller 2 detect rolled piece pass by again 500mm time, the entering of dynamic conditioning sloping portion, export drafts, when velocity measuring roller 2 detect rolled piece pass by again 400mm time adjustment vertical component drafts maintaining roller meet as 2mm.
2) when thickness measuring roller 1 detects You Hou district to thin district's transition, recalculate the entering of sloping portion with thin district thickness, export drafts, namely the entrance drafts of sloping portion is set to 1.4mm, outlet drafts is arranged to 0.1mm, when velocity measuring roller 2 detect rolled piece pass by again 500mm time the entering of dynamic conditioning sloping portion, export drafts, when velocity measuring roller 2 detect rolled piece pass by again 400mm time adjustment vertical component drafts maintaining roller meet as 2mm.
3) aforementioned process is repeated, until complete the straightening process of entire volume steel plate.
Claims (10)
1. a periodic longitudinal variable-thickness sheet material straightener, it is characterized in that: comprise thickness measuring roller (1), velocity measuring roller (2), pinch roll (3), working roll, top working roll tilting gearing (6), top working roll vertical-adjustment device (7) and device framework (9), wherein working roll comprises and is arranged at top working roll (5) above and below work center line and bottom working roll (4), described bottom working roll (4) is installed on device framework (9), before described top working roll (5) comprises, the top working roll tilt adjustments part adjustment member vertical with top working roll of rear setting, described top working roll tilt adjustments part is connected with top working roll tilting gearing (6), the vertical adjustment member of described top working roll is connected with top working roll vertical-adjustment device (7), described top working roll tilting gearing (6) and top working roll vertical-adjustment device (7) are connected to hydraulic jack, described top working roll tilting gearing (6) carries out the adjustment at drafts and angle of inclination to top working roll tilt adjustments part by the driving of hydraulic jack, described top working roll vertical-adjustment device (7) carries out drafts adjustment by the driving of hydraulic jack to the vertical adjustment member of top working roll, described pinch roll (3) is arranged at the front of top working roll (5) and bottom working roll (4), comprise top pinch roll and bottom pinch roll, described bottom pinch roll is installed on device framework (9), described top pinch roll is connected with hydraulic jack, and described top pinch roll is driven by hydraulic jack and rises or decline, before described thickness measuring roller (1) and velocity measuring roller (2) are arranged at pinch roll (3), and be symmetrically arranged in above and below work center line.
2. by periodic longitudinal variable-thickness sheet material straightener according to claim 1, it is characterized in that: described thickness measuring roller (1) and velocity measuring roller (2) are respectively equipped with displacement transducer and encoder, and the signal of institute's displacement sensors, encoder is connected with computer control system respectively.
3. by periodic longitudinal variable-thickness sheet material straightener according to claim 1, it is characterized in that: described top working roll tilting gearing (6) is two, and be arranged at fore side and the transmission side of top working roll tilt adjustments part respectively, before the top working roll tilting gearing (6) of fore side, rear end is connected with the 3rd hydraulic jack (803) and the 5th hydraulic jack (805) respectively, the top working roll tilting gearing (6) of transmission side is front, rear end is connected with the 4th hydraulic jack (804) and the 6th hydraulic jack (806) respectively, described two top working roll tilting gearings (6) are by the synchronous driving of the 3rd hydraulic jack (803) and the 4th hydraulic jack (804), the synchronous driving of the 5th hydraulic jack (805) and the 6th hydraulic jack (806), before top working roll sloping portion, carry out drafts adjustment respectively afterwards, realize angle of inclination adjustment simultaneously.
4., by periodic longitudinal variable-thickness sheet material straightener according to claim 3, it is characterized in that: described top working roll tilt adjustments part comprises six roots of sensation roller and the two ends of each roller are connected with the top working roll tilting gearing (6) of fore side and transmission side respectively.
5. by periodic longitudinal variable-thickness sheet material straightener according to claim 1, it is characterized in that: described top working roll vertical-adjustment device (7) is two, and be arranged at fore side and the transmission side of the vertical adjustment member of top working roll respectively, two top working roll vertical-adjustment device (7) are connected with the 7th hydraulic jack (807) and the 8th hydraulic jack (808) respectively, described top working roll vertical-adjustment device (7) is by the synchronous driving of the 7th hydraulic jack (807) and the 8th hydraulic jack (808), drafts adjustment is carried out to the vertical adjustment member of top working roll.
6. by periodic longitudinal variable-thickness sheet material straightener according to claim 5, it is characterized in that: the vertical adjustment member of described top working roll comprises a roller, the two ends of this roller are connected with the top working roll vertical-adjustment device (7) of fore side and transmission side respectively.
7., by periodic longitudinal variable-thickness sheet material straightener according to claim 1, it is characterized in that: described bottom working roll (4) comprises nine rollers and the two ends of each roller are arranged on device framework (9).
8. by periodic longitudinal variable-thickness sheet material straightener according to claim 1, it is characterized in that: the two ends of described top pinch roll are connected with the first hydraulic jack (801) and the second hydraulic jack (802) respectively, described first hydraulic jack (801) and the second hydraulic jack (802) synchronously drive top pinch roll, make top pinch roll increase or decline.
9. by periodic longitudinal variable-thickness sheet material straightener according to claim 1, it is characterized in that: described working roll and pinch roll (3) are connected with motor (13) by Hooks coupling universal coupling II (18), link rod (17), Hooks coupling universal coupling I (16), gear distribution box (15) and reductor (14) successively.
10. by periodic longitudinal variable-thickness sheet material straightener according to claim 1, it is characterized in that: each hydraulic jack be connected with top pinch roll, top working roll tilting gearing (6) and top working roll vertical-adjustment device (7) is equipped with displacement transducer, and each displacement transducer is all connected with computer control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310497174.9A CN104550326B (en) | 2013-10-18 | 2013-10-18 | A kind of periodic longitudinal variable-thickness sheet material straightener |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310497174.9A CN104550326B (en) | 2013-10-18 | 2013-10-18 | A kind of periodic longitudinal variable-thickness sheet material straightener |
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| CN104550326B CN104550326B (en) | 2016-07-13 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105598213A (en) * | 2016-01-25 | 2016-05-25 | 江西瑞林装备有限公司 | System and method for controlling rolling reduction of metal plate straightening machine |
| CN105855327A (en) * | 2016-06-02 | 2016-08-17 | 新昌县羽林街道上大轴承厂 | Automatic feeding type metal plate straightening machine special for machining |
| CN106825120A (en) * | 2017-04-06 | 2017-06-13 | 首钢总公司 | A kind of tin plating withdrawal straightening machine |
| CN107282702A (en) * | 2016-04-04 | 2017-10-24 | 鞍钢股份有限公司 | Method for straightening steel plate with variable thickness |
| CN109663854A (en) * | 2018-12-06 | 2019-04-23 | 江苏新光环保工程有限公司 | A kind of metallic panel absorber automated production equipment and production method |
| CN109877184A (en) * | 2019-03-28 | 2019-06-14 | 北京首钢股份有限公司 | A method of improving steel band camber defect |
| CN111070274A (en) * | 2018-11-07 | 2020-04-28 | 李红艳 | Electronic product shell plate processing device |
| CN111229871A (en) * | 2020-01-15 | 2020-06-05 | 贵州长征电器成套有限公司 | Copper bar correcting device |
| CN111438227A (en) * | 2020-04-01 | 2020-07-24 | 首钢京唐钢铁联合有限责任公司 | Method for adjusting frame of thermal straightening machine |
| WO2022002551A1 (en) * | 2020-07-03 | 2022-01-06 | Kohler Maschinenbau Gmbh | Straightening machine and method for straightening a metal strip or a flat metal part |
| CN115069827A (en) * | 2022-08-11 | 2022-09-20 | 江苏京生管业有限公司 | Stainless steel plate flattening device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111070274A (en) * | 2018-11-07 | 2020-04-28 | 李红艳 | Electronic product shell plate processing device |
| CN111070274B (en) * | 2018-11-07 | 2021-06-25 | 新昌县哈坎机械配件厂 | Electronic product shell plate processing device |
| CN109663854A (en) * | 2018-12-06 | 2019-04-23 | 江苏新光环保工程有限公司 | A kind of metallic panel absorber automated production equipment and production method |
| CN109877184A (en) * | 2019-03-28 | 2019-06-14 | 北京首钢股份有限公司 | A method of improving steel band camber defect |
| CN111229871A (en) * | 2020-01-15 | 2020-06-05 | 贵州长征电器成套有限公司 | Copper bar correcting device |
| CN111438227A (en) * | 2020-04-01 | 2020-07-24 | 首钢京唐钢铁联合有限责任公司 | Method for adjusting frame of thermal straightening machine |
| CN111438227B (en) * | 2020-04-01 | 2022-04-26 | 首钢京唐钢铁联合有限责任公司 | Method for adjusting frame of thermal straightening machine |
| WO2022002551A1 (en) * | 2020-07-03 | 2022-01-06 | Kohler Maschinenbau Gmbh | Straightening machine and method for straightening a metal strip or a flat metal part |
| CN115069827A (en) * | 2022-08-11 | 2022-09-20 | 江苏京生管业有限公司 | Stainless steel plate flattening device |
| CN115069827B (en) * | 2022-08-11 | 2022-11-29 | 江苏京生管业有限公司 | Stainless steel plate flattening device |
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| CN104550326B (en) | 2016-07-13 |
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