CN113426867A - Steel plate cold rolling system and steel plate cold rolling method - Google Patents
Steel plate cold rolling system and steel plate cold rolling method Download PDFInfo
- Publication number
- CN113426867A CN113426867A CN202110770247.1A CN202110770247A CN113426867A CN 113426867 A CN113426867 A CN 113426867A CN 202110770247 A CN202110770247 A CN 202110770247A CN 113426867 A CN113426867 A CN 113426867A
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- cold rolling
- cold
- wheels
- steel plate
- steel sheet
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- 238000005097 cold rolling Methods 0.000 title claims abstract description 166
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 110
- 239000010959 steel Substances 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004140 cleaning Methods 0.000 claims abstract description 24
- 239000010960 cold rolled steel Substances 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 11
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000004513 sizing Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241000274582 Pycnanthus angolensis Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
-
- 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
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/04—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by rolling
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- B08B1/20—
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/022—Cleaning travelling work
Abstract
The invention relates to the field of machining, in particular to a steel plate cold rolling system and a steel plate cold rolling method, and the method for cold rolling a steel plate by adopting the steel plate cold rolling system comprises the following steps: s1: transporting the steel plates to the two guide frames 63 and the corresponding rotating shafts 71 for transportation; s2: the steel plate is cold-rolled into a wavy steel plate with concave-convex points through a plurality of cold rolling wheels I13 and a plurality of cold rolling wheels II 14; s3: the cold rolled steel sheet is cleaned by a plurality of cleaning bars 33: s4: the cleaned steel plates are collected, and the method has the advantage that the uneven steel plate plane can be cold rolled.
Description
Technical Field
The invention relates to the field of machining, in particular to a steel plate cold rolling system and a steel plate cold rolling method.
Background
The cold rolling mill is a new type of cold rolling processing equipment for steel. The machine can process hot-rolled disks and steel plate coils into finished products, and then carry out subsequent manufacturing. In some cold rolling processes, a steel plate needs to be cold rolled, and a special structure needs to be cold rolled on the steel plate; some existing vehicle container barrier components mainly include box bars (frames), box board cores (corrugated plates), station scales, box plugs and the like, and the box bars are combined and welded into the barrier of a truck carriage after being cold-rolled into sectional materials.
The invention with patent number 107537902a discloses a steel plate cold rolling mill which can perform large driving force transmission, and the transmission mechanism of the steel plate cold rolling mill is simple in structure and not easy to damage. The device comprises a left wallboard and a right wallboard, wherein bearing seats are arranged on the inner sides of the left wallboard and the right wallboard, and two ends of a first sizing roller and a second sizing roller are arranged in the bearing seats of the wallboards on two sides; the first sizing roller and the second sizing roller respectively comprise an upper compression roller and a lower compression roller, and the two compression rollers are correspondingly provided with a bulge and a groove; the upper and lower compression rollers of the first sizing roller and the second sizing roller are respectively driven by two sets of chain drive mechanisms. The two sets of chain transmission mechanisms are driven by the two driving motors without mutual influence, the guaranteed driving force is larger, and the opposite operation of the upper and lower compression rollers of the shaping roller is very conveniently realized. The invention has the disadvantage that the uneven steel plate plane cannot be cold rolled.
Disclosure of Invention
The invention aims to provide a steel plate cold rolling system and a steel plate cold rolling method, which have the advantage of being capable of cold-rolling uneven steel plate planes.
The purpose of the invention is realized by the following technical scheme:
the steel plate cold rolling system comprises cold rolling shafts, cold rolling wheels I, cold rolling wheels II and a support, wherein the support is provided with the two cold rolling shafts, the two cold rolling shafts are provided with a plurality of cold rolling wheels I and a plurality of cold rolling wheels II, and the cold rolling wheels I and the cold rolling wheels II at the upper end and the lower end correspond to each other one by one.
Preferably, the plurality of cold rolling wheels I and the plurality of cold rolling wheels II on the same cold rolling shaft of the steel plate cold rolling system are arranged in a staggered mode.
Preferably, gaps are arranged between the adjacent cold rolling wheels I and II arranged on the same cold rolling shaft.
Preferably, the steel plate cold rolling system further comprises cold rolling gears, the two ends of the two cold rolling shafts are respectively provided with the cold rolling gears, and the two cold rolling gears on the same side are in meshing transmission.
Preferably, the steel plate cold rolling system further comprises a centrifugal rod, a base, cleaning rods, a worm wheel, a U-shaped frame and a worm, the U-shaped frame is arranged on the support, the two worm wheels are arranged on the U-shaped frame, the centrifugal rods are arranged on the U-shaped frame, the base is arranged on each centrifugal rod, the cleaning rods are arranged on the bases, the worm wheel is arranged on each centrifugal rod, and the worm wheels are meshed with the two worm wheels for transmission.
The steel plate cold rolling system and the steel plate cold rolling method have the beneficial effects that: can process the steel sheet that has unsmooth plane and bend with the pole board through a plurality of cold rolling wheel I and cold rolling wheel II, increase the frictional force on steel sheet surface, can also realize the cleanness to steel sheet concavo-convex department through the rotation and the slip of a plurality of clean poles.
Drawings
The invention is described in further detail below with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic view of a mechanism for cold rolling a steel sheet to form a concavo-convex plane;
FIG. 2 is a view showing a structure of a cold rolled steel sheet;
FIG. 3 is a cross-sectional view of a cold rolling wheel I;
FIG. 4 is a structural view of a cold rolling wheel II;
FIG. 5 is two of the positional relationships of FIG. 2;
FIG. 6 is a block diagram of a cleaning rod;
FIG. 7 is an assembly view of a plurality of FIG. 6;
FIG. 8 is a block diagram of the power connection of FIGS. 2 and 7;
FIG. 9 is a block diagram of the clamping of the steel plate;
fig. 10 is a structural view of the supporting steel plate.
In the figure: cold rolling the shaft 11; cold rolling the gear 12; a cold rolling wheel I13; a cold rolling wheel II 14; a bracket 21; a centrifugal lever 31; a base 32; a cleaning rod 33; a turbine 34; a U-shaped frame 41; a worm 42; a driven pulley 51; a driving pulley 52; a toothed belt 53; a carriage 61; a slide bar 62; a guide frame 63; a rotating shaft 71; transport wheels 72.
Detailed Description
Referring to fig. 1, 2, 3, 4 and 5, the implementation of the cold-rolled steel sheet is described in detail:
a steel plate cold rolling system comprises a support 21, two cold rolling shafts 11 are rotatably connected to the support 21, a plurality of cold rolling wheels I13 and a plurality of cold rolling wheels II 14 are fixedly connected to the two cold rolling shafts 11, the cold rolling wheels I13 and the cold rolling wheels II 14 at the upper end and the lower end correspond to each other one by one, when a steel plate is conveyed to the plurality of cold rolling wheels I13 and the plurality of cold rolling wheels II 14 which correspond to each other up and down, the plurality of cold rolling wheels I13 and the plurality of cold rolling wheels II 14 are used for meshing the steel plate and cold rolling the steel plate, a plurality of grooves are uniformly distributed on the cold rolling wheel I13 and used for supporting the steel plate during cold rolling of the steel plate, bulges corresponding to the plurality of grooves uniformly distributed on the cold rolling wheel I13 are arranged on the outer sides of the plurality of cold rolling wheels II 14, when the plurality of cold rolling wheels I13 and the plurality of cold rolling wheels II 14 are used for cold rolling the steel plate, the steel plate is processed into a plurality of lines with concave-convex alternation through the matching of the grooves and the bulges, when the plate needs larger friction force in the using process, the friction force of the common flat plate is smaller, and the steel plate with multiple rows of concave-convex alternation is cold rolled, so that the plate is more suitable for use due to larger friction force.
In combination with the above embodiments, the following functions may also be implemented:
referring to fig. 2, the implementation process of how to process the steel plate into a plate material with a plurality of rows of concave-convex alternated is explained in detail:
the plurality of cold rolling wheels I13 and the plurality of cold rolling wheels II 14 on the same cold rolling shaft 11 are arranged in a staggered mode, when the plurality of cold rolling wheels I13 and the plurality of cold rolling wheels II 14 are used for cold rolling steel plates, because the plurality of cold rolling wheels I13 and the plurality of cold rolling wheels II 14 on the same cold rolling shaft 11 are arranged in a staggered way, and the cold rolling wheels I13 and the cold rolling wheels II 14 at the upper end and the lower end correspond to each other one by one, after the steel plate is cold rolled, the processed concave-convex parts are arranged in a multi-row way, when the processed steel plate is used, the friction force of the steel plate can be increased by the arranged concave-convex form, so that the steel plate cannot slip due to larger friction force to cause damage to other devices or injury to personnel during use, meanwhile, the transportation reliability of the steel plate in the cold rolling process can be improved, the steel plate cannot be transported due to slippage, and the cold rolling speed of the precision frame for cold rolling of the steel plate is ensured.
In combination with the above embodiments, the following functions may also be implemented:
referring to fig. 2, 3, 4 and 5, the implementation of the cold-rolled steel sheet is explained in detail:
gaps are arranged between adjacent cold rolling wheels I13 and II 14 in a plurality of cold rolling wheels I13 and II 14 which are fixedly connected on the same cold rolling shaft 11, when a plurality of cold rolling wheels I13 and II 14 which correspond up and down are used for cold rolling a steel plate, because the outer diameter sizes of the cold rolling wheels I13 and II 14 are different, bending can be processed when the cold rolling wheels I13 and II 14 are used for cold rolling the steel plate, the bent part cannot be cut when the cold rolling wheels I13 and II 14 are used for cold rolling the steel plate, so that gaps are arranged between the adjacent cold rolling wheels I13 and II 14, the steel plate with a plurality of concave-convex parts can be processed when the cold rolling wheels I13 and II 14 are used for cold rolling the steel plate, and the friction force of the steel plate can be increased to the maximum degree.
In combination with the above embodiments, the following functions may also be implemented:
with reference to fig. 2 and 5, the implementation of reliable operation of two cold-rolled shafts is explained in detail:
two ends of two cold rolling shafts 11 are fixedly connected with cold rolling gears 12, two cold rolling gears 12 on the same side are in meshing transmission, when one cold rolling shaft 11 rotates, the cold rolling shaft 11 drives the cold rolling gears 12 on the two ends to rotate, the cold rolling gears 12 on the two ends are in meshing transmission to drive the other two cold rolling gears 12 to synchronously rotate, so as to drive the other cold rolling shaft 11 to rotate, the two cold rolling shafts 11 drive a plurality of cold rolling wheels I13 and a cold rolling wheel II 14 to synchronously rotate, so as to realize the cold rolling processing of the steel plate, the cold rolling gears 12 are in meshing driving at the two ends, so that the situation that only single-side transmission is adopted is prevented, after long-term transmission, one side of the two cold rolling shafts 11 is more worn due to larger force received by the single-side transmission, the wear of the other side is smaller, splayed phenomenon occurs to the two cold rolling shafts 11, and the use of a steel plate cold rolling system is seriously influenced, the two sides are in meshing transmission by using the cold rolling gears 12, so that the abrasion of the two ends of the two cold rolling shafts 11 is close, the distance between the two ends of the two cold rolling shafts 11 is always kept, the parallel of the axes of the two cold rolling shafts 11 is ensured, and the reliable cold rolling processing of the steel plate for a long time is ensured.
In combination with the above embodiments, the following functions may also be implemented:
referring to fig. 6 and 7, the implementation process of cleaning the concave and convex parts of the cold rolled part of the steel plate is described in detail:
the bracket 21 is fixedly connected with a U-shaped frame 41, the U-shaped frame 41 is rotatably connected with two worms 42, the U-shaped frame 41 is rotatably connected with a plurality of centrifugal rods 31, the centrifugal rods 31 are fixedly connected with bases 32, the bases 32 are slidably connected with cleaning rods 33, the bases 32 are hollow, springs are arranged between the bases 32 and the corresponding cleaning rods 33, the centrifugal rods 31 are fixedly connected with turbines 34, the turbines 34 are engaged with the two worms 42 for transmission, when one of the two worms 42 rotates, the worm 42 is engaged with and drives the turbines 34 to synchronously rotate, the turbines 34 drive the centrifugal rods 31 to rotate, the centrifugal rods 31 drive the bases 32 to rotate, the bases 32 drive the cleaning rods 33 to rotate, the rotating cleaning rods 33 can clean steel plates, springs are arranged between the bases 32 and the corresponding cleaning rods 33, when the unsmooth department of steel sheet contacted a plurality of clean poles 33, a plurality of clean poles 33 can be flexible in the axial, clean the unsmooth department of steel sheet, cooperate a plurality of clean poles 33 to rotate around the axis of the turbine 34 that corresponds for a plurality of clean poles 33 can cooperate flexible under the rotation to clean the unsmooth department of steel sheet, make things convenient for the use of cold rolled back steel sheet.
In combination with the above embodiments, the following functions may also be implemented:
referring to fig. 8, the implementation process of the cold rolling shaft and worm drive is described in detail:
one of the two worms 42 is fixedly connected with a driven pulley 51, one of the two cold-rolled shafts 11 is fixedly connected with a driving pulley 52, the driving pulley 52 and the driven pulley 51 are driven by a toothed belt 53, when the cold-rolled shaft 11 obtains power to rotate, the cold-rolled shaft 11 drives the driving pulley 52 to rotate, the driving pulley 52 drives the driven pulley 51 to rotate by the toothed belt 53, the driven pulley 51 drives the worm 42 fixedly connected with the driven pulley 51 to rotate, the worm 42 obtains power to drive the plurality of cleaning rods 33 to rotate, and the other worm 42 plays an auxiliary role to ensure the reliable rotation of the plurality of worm wheels 34.
In combination with the above embodiments, the following functions may also be implemented:
with reference to fig. 8, the implementation of the worm drive is described in detail:
the reference circle diameter of the driving pulley 52 is larger than that of the driven pulley 51, when the driving pulley 52 drives the driven pulley 51 to rotate, the rotating speed of the driven pulley 51 is increased, the driven pulley 51 drives the worm 42 to mesh with and drive the plurality of turbines 34 to rotate rapidly, the rapid rotation of the plurality of cleaning rods 33 is further achieved, and the rapid cleaning of the steel plates by the plurality of cleaning rods 33 is achieved.
In combination with the above embodiments, the following functions may also be implemented:
referring to fig. 9, the implementation process of the limiting effect on different steel plates with different speeds is detailed:
equal fixedly connected with carriage 61 in both ends of support 21, equal sliding connection has slide bar 62 on two carriage 61, equal fixedly connected with leading truck 63 on two slide bar 62, two leading trucks 63 respectively with the carriage 61 between the fixedly connected with spring that corresponds, when the steel sheet of different width is placed on support 21, the both ends of steel sheet contact two leading trucks 63 earlier, two leading trucks 63 are personally submitted the opening form with the steel sheet contact, when the steel sheet contacts two leading trucks 63, the both ends of steel sheet promote two leading trucks 63 and make two leading trucks 63 slide to both ends, two leading truck 63 compression springs simultaneously, the atress of two springs is the same, can stabilize the intermediate position with the steel sheet, be convenient for follow-up cold rolling to the steel sheet.
In combination with the above embodiments, the following functions may also be implemented:
referring to fig. 10, the implementation process of cold-rolled steel sheet transportation is explained in detail:
rotate on the support 21 and be connected with two pivots 71, all rotate on two pivots 71 and be connected with a plurality of transport wheels 72, when transporting the steel sheet, place a plurality of transport wheels 72 with the steel sheet on, when carrying out cold rolling to the steel sheet, when a plurality of transport wheels 72 played the supporting role to the steel sheet, can reduce the frictional force in the steel sheet transportation for the more swift convenience of steel sheet transportation.
The method for cold-rolled steel sheets in the steel sheet cold rolling system comprises the following steps:
the method comprises the following steps: transporting the steel plates to the two guide frames 63 and the corresponding rotating shafts 71 for transportation;
step two: the steel plate is cold-rolled into a wavy steel plate with concave-convex points through a plurality of cold rolling wheels I13 and a plurality of cold rolling wheels II 14;
step three: the cold rolled steel sheet is cleaned by a plurality of cleaning bars 33:
step four: and collecting the cleaned steel plates.
In combination with the above embodiments, the following functions may also be implemented:
the structure of the driving function of the cold-rolled steel sheet is explained below with reference to fig. 1:
the steel sheet cold rolling system still includes gear motor, this gear motor fixed connection is on support 21, this gear motor's output shaft and 11 fixed connection of one of them cold rolling axle, when starting gear motor, this gear motor drives this cold rolling axle 11 fast turn, realize the cold rolling processing to the steel sheet, the steel sheet cold rolling system still includes high pressure spraying structure, this high pressure spraying structure fixed connection is on support 21, the nozzle and a plurality of cleaning rod 33 one-to-one of this high pressure spraying structure, the debris to clean the steel sheet, this a cleaning rod 33 and connecting element and the high pressure spraying structure for cleaning the steel sheet all can be about two cold rolling axle 11 equidistance horizontal plane symmetry settings of distance, the realization is to the cleanness of plane both sides about the steel sheet.
Claims (10)
1. A steel plate cold rolling system comprises a cold rolling shaft (11), a cold rolling wheel I (13), a cold rolling wheel II (14) and a bracket (21), and is characterized in that: two cold rolling shafts (11) are arranged on the support (21), a plurality of cold rolling wheels I (13) and a plurality of cold rolling wheels II (14) are arranged on the two cold rolling shafts (11), and the cold rolling wheels I (13) and the cold rolling wheels II (14) at the upper end and the lower end correspond to each other one by one.
2. The steel sheet cold rolling system according to claim 1, wherein: the cold rolling wheels I (13) and the cold rolling wheels II (14) on the same cold rolling shaft (11) are arranged in a staggered mode.
3. The steel sheet cold rolling system according to claim 2, wherein: gaps are arranged between the adjacent cold rolling wheels I (13) and II (14) arranged on the same cold rolling shaft (11).
4. The steel sheet cold rolling system according to claim 3, wherein: the cold-rolling gear transmission device is characterized by further comprising cold-rolling gears (12), wherein the cold-rolling gears (12) are arranged at two ends of the two cold-rolling shafts (11), and the two cold-rolling gears (12) on the same side are in meshing transmission.
5. The steel sheet cold rolling system according to claim 4, wherein: the centrifugal cleaning device is characterized by further comprising centrifugal rods (31), bases (32), cleaning rods (33), turbines (34), a U-shaped frame (41) and worms (42), wherein the U-shaped frame (41) is arranged on the support (21), two worms (42) are arranged on the U-shaped frame (41), a plurality of centrifugal rods (31) are arranged on the U-shaped frame (41), the bases (32) are arranged on the centrifugal rods (31), the cleaning rods (33) are arranged on the bases (32), the turbines (34) are arranged on the centrifugal rods (31), and the turbines (34) are in meshing transmission with the two worms (42).
6. The steel sheet cold rolling system according to claim 5, wherein: the cold-rolled steel plate cold-rolling device is characterized by further comprising driven belt wheels (51), driving belt wheels (52) and toothed belts (53), wherein the driven belt wheels (51) are arranged on one worm (42), the driving belt wheels (52) are arranged on one cold-rolled shaft (11), and the driving belt wheels (52) and the driven belt wheels (51) are in transmission through the toothed belts (53).
7. The steel sheet cold rolling system according to claim 6, wherein: the reference circle diameter of the driving pulley (52) is larger than that of the driven pulley (51).
8. The steel sheet cold rolling system according to claim 7, wherein: the sliding frame structure is characterized by further comprising sliding frames (61), sliding rods (62) and guide frames (63), the sliding frames (61) are arranged at two ends of the support (21), the sliding rods (62) are arranged on the two sliding frames (61), the guide frames (63) are arranged on the two sliding rods (62), and springs are arranged between the two guide frames (63) and the corresponding sliding frames (61).
9. The steel sheet cold rolling system according to claim 8, wherein: the device is characterized by further comprising a rotating shaft (71) and conveying wheels (72), wherein the two rotating shafts (71) are arranged on the support (21), and a plurality of conveying wheels (72) are arranged on the two rotating shafts (71).
10. A method of using a cold-rolled steel sheet for a steel sheet cold rolling system according to claim 9, characterized by: the method comprises the following steps:
the method comprises the following steps: transporting the steel plate to two guide frames (63) and corresponding rotating shafts (71) for transportation;
step two: cold-rolling the steel plate into a wavy steel plate with concave-convex points through a plurality of cold rolling wheels I (13) and a plurality of cold rolling wheels II (14);
step three: cleaning the cold-rolled steel sheet by a plurality of cleaning rods (33):
step four: and collecting the cleaned steel plates.
Priority Applications (1)
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CN202110770247.1A CN113426867A (en) | 2021-07-07 | 2021-07-07 | Steel plate cold rolling system and steel plate cold rolling method |
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CN202110770247.1A CN113426867A (en) | 2021-07-07 | 2021-07-07 | Steel plate cold rolling system and steel plate cold rolling method |
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CN202110770247.1A Pending CN113426867A (en) | 2021-07-07 | 2021-07-07 | Steel plate cold rolling system and steel plate cold rolling method |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114798862A (en) * | 2022-04-20 | 2022-07-29 | 哈尔滨学院 | Processing device for two-way stretching flexible electronic device |
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WO2013097576A1 (en) * | 2011-12-31 | 2013-07-04 | 中冶赛迪工程技术股份有限公司 | Cross cut device of strip steel flying shear |
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CN111421036A (en) * | 2020-05-11 | 2020-07-17 | 上海精锐金属建筑系统有限公司 | Profiled steel sheet arc bending machine |
CN211811780U (en) * | 2020-03-11 | 2020-10-30 | 连云港职业技术学院 | Electric automatization material transfer device |
CN212030288U (en) * | 2020-04-20 | 2020-11-27 | 昆明铁骑力士饲料有限公司 | Heat recoverer device for feed production |
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2021
- 2021-07-07 CN CN202110770247.1A patent/CN113426867A/en active Pending
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WO2013097576A1 (en) * | 2011-12-31 | 2013-07-04 | 中冶赛迪工程技术股份有限公司 | Cross cut device of strip steel flying shear |
JP2013226561A (en) * | 2012-04-24 | 2013-11-07 | Aida Engineering Co Ltd | Timing belt type cold rolling machine and cold rolling tube-making machine |
CN107537902A (en) * | 2017-11-04 | 2018-01-05 | 肇庆市高新区晓靖科技有限公司 | Krause mill |
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CN114798862A (en) * | 2022-04-20 | 2022-07-29 | 哈尔滨学院 | Processing device for two-way stretching flexible electronic device |
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