CN212285384U - Strip steel uncoiling transverse crease leveling device - Google Patents
Strip steel uncoiling transverse crease leveling device Download PDFInfo
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- CN212285384U CN212285384U CN202020694046.9U CN202020694046U CN212285384U CN 212285384 U CN212285384 U CN 212285384U CN 202020694046 U CN202020694046 U CN 202020694046U CN 212285384 U CN212285384 U CN 212285384U
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Abstract
The utility model discloses a strip steel uncoiling transverse crease leveling device, which comprises a steel plate placing rack and a leveling sliding frame which is connected with the middle part of the steel plate placing rack in a sliding way, the upper side of the middle part of the leveling sliding frame is rotatably connected with an upper supporting roller, both ends of the upper part of the leveling sliding frame are fixedly connected with fixed moving plates, one side of each fixed moving plate, which is far away from the other fixed moving plate, is fixedly connected with a motor, the rotating end of each motor is fixedly connected with a ball screw, the ball screw respectively penetrates through the two fixed moving plates and is connected with the fixed moving plates in a sliding way, a limiting slide bar is fixedly connected between the two fixed moving plates, a sliding seat is connected with the limiting slide bar in a sliding way, the sliding seat is in threaded connection with the ball screw, the lower part of the sliding seat is provided with a press roll frame for rolling a steel plate, the, the flatness of the rolled steel plate is improved.
Description
Technical Field
The utility model relates to a steel sheet processing technology field especially relates to a horizontal crease leveling device is opened a book to belted steel.
Background
Leveling machines are also called opening machines, leveling machines and straightening machines. The leveler is mainly used for leveling various specifications of plates or blocks of plates. The machine is suitable for leveling various cold and hot rolled plates. Because the operation is convenient and simple, the application range of the method is spread over multiple industries such as machinery, metallurgy, building materials, chemical industry, electronics, electric power, light industry and the like, and particularly in the industries such as shipbuilding, locomotive vehicles, boiler bridges, metal structure factories and the like, the method becomes an indispensable necessary product in production.
Patent publication No. CN201871575U discloses a feeding leveler, which comprises a base, a pinch roll mechanism and a leveling mechanism, wherein the pinch roll mechanism and the leveling mechanism are sequentially arranged on the base; the pinch roll mechanism comprises a pinch roll rack, an upper pinch roll, a lower pinch roll and a hydraulic oil cylinder; the leveling mechanism comprises a leveling rack, a leveling roller, a lifting seat, a lifting oil cylinder and a transmission mechanism, a steel coil is uncoiled and guided into the leveling pinch roller, the upper pinch roller is pressed down to clamp the strip steel to enable the strip steel to have power, the strip steel is conveyed into the leveling roller, and the leveling roller achieves the leveling of the strip steel by adjusting the gap between the upper row of leveling working rollers and the lower row of leveling working rollers. The leveling effect of the belt material is good, the belt head does not need to be cut, the material is not wasted, and the production cost is reduced.
The technical scheme can realize the leveling treatment of normal strip steel, but in the production process of partial strip steel coils, because the deformation resistance of the strip steel is small, transverse creases appear during the winding operation, the creases generally exist at the tail parts of the strip steel coils, the straightening treatment is obvious after the strip steel is uncoiled, and the transverse creases on the strip steel are only contacted with a single straightening roller in the straightening machine, so that the strip steel straightening machine cannot level the transverse creases, the flatness of the processed strip steel finished product is low, and the quality of the steel plate is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a horizontal crease leveling device is opened a book to belted steel can carry out the roll-in flattening to the horizontal crease on the belted steel, reduces the deflection of crease, reduces horizontal crease to belted steel off-the-shelf influence.
The utility model discloses a can realize through following technical scheme:
a strip steel uncoiling transverse crease leveling device comprises a steel plate placing rack and a leveling sliding frame connected to the middle part of the steel plate placing rack in a sliding way, the upper side of the middle part of the leveling carriage is rotationally connected with an upper supporting roller, both ends of the upper part of the leveling carriage are fixedly connected with fixed moving plates, one side of the fixed moving plate, which is far away from the other fixed moving plate, is fixedly connected with a motor, the rotating end of the motor is fixedly connected with a ball screw, the ball screw respectively penetrates through the two fixed moving plates and is connected with the fixed moving plates in a sliding way, a limit sliding rod is fixedly connected between the two fixed moving plates, the limiting slide rod is connected with a slide pedestal in a sliding way, the slide pedestal is in threaded connection with a ball screw, the sliding platform is characterized in that a compression roller frame for rolling the steel plate is arranged on the lower portion of the sliding platform seat, two longitudinal moving sliding rods which are symmetrically arranged are fixedly connected to the upper end of the compression roller frame, and the longitudinal moving sliding rods are connected with the sliding platform seat in a sliding mode.
Through adopting above-mentioned technical scheme, the motor drive sliding pedestal translation on spacing slide bar to make the compression roller frame of sliding pedestal lower part roll-in to the horizontal crease portion of steel sheet, reduce the crease height of warping of steel sheet, improve the planarization of steel sheet after the roll-in.
Further setting the following steps: the sliding table is characterized in that a nut sleeve is fixedly connected to the upper end of the sliding table seat, and the nut sleeve is sleeved on the ball screw and is in threaded connection with the ball screw.
Through adopting above-mentioned technical scheme, make sliding table seat pass through nut sleeve pipe and ball screw threaded connection, be convenient for make ball screw in the intraductal translation of sliding table seat on spacing slide bar of rotation drive of nut sleeve, and then drive the compression roller frame of downside and carry out horizontal roll-in to the steel sheet.
Further setting the following steps: the upper portion of the sliding table seat is fixedly connected with a sliding rod sleeve, and the sliding rod sleeve is sleeved on the limiting sliding rod and is in sliding connection with the limiting sliding rod.
Through adopting above-mentioned technical scheme, make the sliding pedestal use slide bar sleeve pipe and spacing slide bar sliding connection, be convenient for restrict the sliding pedestal and rotate along with ball screw's rotation between two surely move the board, drive the sliding pedestal translation between two surely move the board when making ball screw rotate.
Further setting the following steps: the cover is equipped with interior top spring on indulging moving the slide bar, interior top spring lower extreme and pedestal fixed connection, interior top spring upper end with indulge moving slide bar tip fixed connection.
Through adopting above-mentioned technical scheme, the spring that pushes up in indulgeing the setting on moving the slide bar, be convenient for make the spring pulling compression roller frame move down in top to make the compression roller frame carry out the roll-in to the steel sheet and restore, keep the laminating state of compression roller frame and steel sheet.
Further setting the following steps: two be equipped with the regulation worm between the vertical sliding rod, it is equipped with the pivot seat to adjust the worm downside, pivot seat outer loop and sliding stand seat fixed connection, pivot seat inner ring and regulation worm fixed connection, compression roller frame upper portion fixedly connected with runs through the driven rack of sliding stand seat, driven rack is connected with the meshing of regulation worm.
Through adopting above-mentioned technical scheme, rotate the regulation worm that sets up on the sliding stand seat, the longitudinal movement of adjusting driven rack drives the compression roller frame and removes at the sliding stand seat downside to the staff of being convenient for adjusts the height of compression roller frame according to the degree of buckling of horizontal crease.
Further setting the following steps: the utility model discloses a leveling roller, including upper support roller, steel sheet, fixed moving plate, frame pulley, flattening balladeur train, upper support roller both sides are equipped with the aversion slide rail, rack fixed connection is placed with the steel sheet to aversion slide rail lower extreme, it is equipped with the body frame pulley to decide moving plate downside, two the body frame pulley respectively with the both ends fixed connection of flattening balladeur train, the flattening balladeur train passes through the body frame.
Through adopting above-mentioned technical scheme, the aversion slide rail that sets up in upper roll both sides is convenient for make the flattening balladeur train slide on the aversion slide rail through the body frame pulley, prescribes a limit to the straight line of flattening frame on the rack is placed to the steel sheet and slides, improves the stability of flattening balladeur train when the rack is placed to the steel sheet and slides.
Further setting the following steps: the steel plate placing rack is characterized in that two sides of the steel plate placing rack are fixedly connected with positioning slide rails, a positioning hole is formed in the middle of the leveling sliding frame, a positioning screw is inserted into the positioning hole, the positioning screw penetrates through the positioning hole and is in threaded connection with the leveling sliding frame, and the two positioning screws are mutually close to one ends and are respectively abutted to the two positioning slide rails.
Through adopting above-mentioned technical scheme, the set screw that is used for with location slide rail inner wall butt that sets up in flattening balladeur train both sides, the flattening frame of being convenient for removes the back on the rack is placed to the steel sheet, rotates set screw, makes set screw and location slide rail butt, prescribes a limit to the removal of flattening frame on the rack is placed to the steel sheet, stability when improving the pedestal lateral shifting on the spacing slide bar.
Further setting the following steps: and an anti-slip rubber strip is adhered in the positioning slide rail and is blocked between the positioning slide rail and the positioning screw.
Through adopting above-mentioned technical scheme, at the anti-skidding adhesive tape of location slide rail inner wall adhesion, be convenient for increase set screw and location slide rail between the resistance, promote the spacing effect of set screw to the flattening balladeur train.
Further setting the following steps: the sliding table seat is provided with a ball bearing on one side of the sliding table seat away from the motor, the ball bearing is fixedly connected with a ball screw inside and away from one side of the sliding table seat, a transfer through hole is formed in the fixed moving plate, the ball bearing is located in the transfer through hole and fixedly connected with the inner wall of the transfer through hole, and the ball screw is rotatably connected with the fixed moving plate through the ball bearing.
By adopting the technical scheme, the limiting slide rod is rotatably connected with the fixed moving plates through the ball bearings, so that the resistance of the limiting slide rod in rotation in the fixed moving plates is reduced, and the stability of the limiting slide rod in rotation between the two fixed moving plates is improved.
To sum up, the utility model discloses a beneficial technological effect does:
(1) the utility model drives the translation of the sliding pedestal on the limiting sliding rod through the motor to drive the compression roller frame to carry out rolling repair on the steel plate placed on the steel plate placing rack;
(2) set screw at the setting of flattening balladeur train side carries on spacingly to gliding flattening balladeur train on the rack is placed to the steel sheet, makes the sliding stand seat on the flattening balladeur train drive the compression roller frame and removes and carry out the roll-in to the steel sheet and restore.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure at A in FIG. 1;
fig. 3 is a front view of the present invention;
fig. 4 is a plan view of the present invention.
Reference numerals: 1. a steel plate placing rack; 2. leveling the carriage; 3. an upper supporting roller; 4. a fixed moving plate; 5. an electric motor; 6. a ball screw; 7. a limiting slide bar; 8. a slide pedestal; 9. a roller frame; 10. a nut sleeve; 11. a slide rod sleeve; 12. longitudinally moving the slide bar; 13. an inner top spring; 14. a driven rack; 15. a rotating shaft seat; 16. adjusting the worm; 17. a ball bearing; 18. a pulley of the main frame; 19. a shifting slide rail; 20. positioning the slide rail; 21. and (5) positioning the screw.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore are not to be construed as limiting the scope of the invention.
Referring to fig. 1, for the utility model discloses a horizontal crease leveling device is opened a book to belted steel, place rack 1 and sliding connection in the steel sheet and place the flattening balladeur train 2 at rack 1 middle part including the steel sheet, 2 middle part upsides of flattening balladeur train rotate and are connected with upper roll 3, the equal fixedly connected with in 2 upper portion both ends of flattening balladeur train is decided and is moved board 4, decide and move board 4 and keep away from one side fixedly connected with motor 5 of another certain board 4, motor 5 rotates end fixedly connected with ball screw 6, ball screw 6 runs through two respectively and decides and move board 4 sliding connection and with deciding, two decide and move spacing slide bar 7 of fixedly connected with between the board 4, sliding connection has slide pedestal 8 on spacing slide bar.
Referring to fig. 2, a slide rod sleeve 11 is fixedly connected to an upper portion of a slide pedestal 8, the slide rod sleeve 11 is sleeved on a limit slide rod 7 and is slidably connected with the limit slide rod 7, so that the slide pedestal 8 is slidably connected with the limit slide rod 7 through the slide rod sleeve 11, the slide pedestal 8 is conveniently limited to rotate along with the rotation of a ball screw 6 between two fixed moving plates 4, the slide pedestal 8 is driven to translate between the two fixed moving plates 4 when the ball screw 6 rotates, the slide pedestal 8 is in threaded connection with the ball screw 6, a nut sleeve 10 is fixedly connected to an upper end of the slide pedestal 8, the nut sleeve 10 is sleeved on the ball screw 6 and is in threaded connection with the ball screw 6, the slide pedestal 8 is connected with the ball screw 6 through the nut sleeve 10, the rotation of the ball screw 6 in the nut sleeve 10 is convenient to drive the slide pedestal 8 to translate on the limit slide rod 7, and further drive a roller frame 9 on the lower side to transversely roll a steel.
The lower portion of the sliding table seat 8 is provided with a press roller frame 9 used for rolling a steel plate, the upper end of the press roller frame 9 is fixedly connected with two longitudinally-moving sliding rods 12 which are symmetrically arranged, the longitudinally-moving sliding rods 12 are connected with the sliding table seat 8 in a sliding mode, inner top springs 13 are sleeved on the longitudinally-moving sliding rods 12, the lower ends of the inner top springs 13 are fixedly connected with the sliding table seat 8, the upper ends of the inner top springs 13 are fixedly connected with the end portions of the longitudinally-moving sliding rods 12, and the inner top springs 13 arranged on the longitudinally-moving sliding rods 12 facilitate the inner top springs 13 to pull the press roller frame 9 to move downwards, so that the press roller frame 9 can keep the fit state of the press roller frame 9 and the steel plate when.
Referring to fig. 2, an adjusting worm 16 is arranged between two longitudinal sliding rods 12, a rotating shaft seat 15 is arranged at the lower side of the adjusting worm 16, the outer ring of the rotating shaft seat 15 is fixedly connected with a sliding platform seat 8, the inner ring of the rotating shaft seat 15 is fixedly connected with the adjusting worm 16, a driven rack 14 penetrating through the sliding platform seat 8 is fixedly connected at the upper part of a compression roller frame 9, the driven rack 14 is meshed with the adjusting worm 16, the adjusting worm 16 on the sliding platform seat 8 is rotated to drive the driven rack 14 meshed with the adjusting worm 16 to move longitudinally, thereby being convenient for the working personnel to adjust the height of the compression roller frame 9 according to the bending degree of the transverse crease, when the bending degree of the steel plate is larger, the driven rack 14 moves upwards, the compression roller frame 9 is jointed with the steel plate at the bending part, when the bending degree of the steel plate is smaller, the driven rack 14 moves downwards, and the press roll frame 9 on the lower side of the sliding table seat 8 is tightly attached to the bent part of the steel plate, so that the repairing effect of the press roll frame 9 on the bent part of the steel plate with different bending degrees is kept.
Referring to fig. 3, two sides of the upper carrier roller 3 are provided with displacement slide rails 19, the lower ends of the displacement slide rails 19 are fixedly connected with the steel plate placing rack 1, the lower side of the fixed moving plate 4 is provided with main frame pulleys 18, the two main frame pulleys 18 are respectively fixedly connected with two ends of the leveling carriage 2, the leveling carriage 2 is slidably connected with the steel plate placing rack 1 through the main frame pulleys 18, the displacement slide rails 19 are arranged on two sides of the upper carrier roller 3, so that the leveling carriage 2 can conveniently slide on the displacement slide rails 19 through the main frame pulleys 18, the linear sliding of the leveling carriage 2 on the steel plate placing rack 1 is limited, and the stability of the leveling carriage 2 when sliding on the steel plate placing rack 1 is improved.
Referring to fig. 3, both sides of the steel plate placing rack 1 are fixedly connected with positioning slide rails 20, the middle portion of the leveling carriage 2 is provided with a positioning hole, a positioning screw 21 is inserted into the positioning hole, the positioning screw 21 penetrates through the positioning hole and is in threaded connection with the leveling carriage 2, one end of each of the two positioning screws 21 close to each other is respectively abutted to the two positioning slide rails 20, the positioning screws 21 which are abutted to the inner walls of the positioning slide rails 20 are arranged at both sides of the leveling carriage 2, so that after the leveling carriage 2 moves on the steel plate placing rack 1, the positioning screws 21 are rotated to abut the positioning screws 21 to limit the movement of the leveling carriage 2 on the steel plate placing rack 1, the stability of the slide pedestal 8 on the limiting slide bar 7 during transverse movement is improved, the anti-slip rubber strips are adhered to the positioning slide rails 20 and the positioning screws 21, and the anti-slip rubber strips are adhered to, the resistance between the positioning screw 21 and the positioning slide rail 20 is increased, and the limiting effect of the positioning screw 21 on the leveling carriage 2 is improved.
Referring to fig. 1, a ball bearing 17 is disposed on a side of the slide pedestal 8 away from the motor 5, the ball bearing 17 is fixedly connected to the ball screw 6, a transfer through hole is disposed on the fixed moving plate 4 away from the motor 5, the ball bearing 17 is disposed in the transfer through hole and fixedly connected to an inner wall of the transfer through hole, the ball screw 6 is rotatably connected to the fixed moving plate 4 through the ball bearing 17, so that the limit slide bar 7 is rotatably connected to the fixed moving plate 4 through the ball bearing 17, which is convenient for reducing the resistance of the limit slide bar 7 rotating in the fixed moving plate 4 and improving the stability of the limit slide bar 7 rotating between the two fixed moving plates 4.
When the steel plate has a transverse crease portion, the steel plate is placed on the steel plate placing rack 1, the positioning screws 21 are screwed, the positioning screws 21 are separated from the positioning slide rails 20, the leveling sliding frame 2 is moved, the roller frame 9 on the leveling sliding frame 2 is located right above the transverse crease, the roller frame 16 is rotated, the roller frame 16 is driven to move 14, the roller 9 is attached to the steel plate, the positioning screws 21 are screwed reversely, the positioning screws 21 are abutted to the positioning slide rails 20, the motor 5 is started, the rotating end of the motor 5 drives the ball screw 6 to rotate, the sliding table seat 8 on the ball screw 6 is driven to move along the transverse crease, the roller frame 9 is attached to the steel plate to be rolled, the steel plate with the crease portion is repaired, and deformation is reduced.
The above, only do the preferred embodiment of the present invention, not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (9)
1. The utility model provides a belted steel is opened a book horizontal crease leveling device which characterized in that: the steel plate rolling device comprises a steel plate placing rack (1) and a leveling sliding frame (2) connected to the middle of the steel plate placing rack (1) in a sliding manner, wherein an upper carrier roller (3) is connected to the upper side of the middle of the leveling sliding frame (2) in a rotating manner, fixed moving plates (4) are fixedly connected to two ends of the upper portion of the leveling sliding frame (2), a motor (5) is fixedly connected to one side, away from another fixed moving plate (4), of each fixed moving plate (4), a ball screw (6) is fixedly connected to the rotating end of the motor (5), the ball screw (6) penetrates through the two fixed moving plates (4) respectively and is connected with the fixed moving plates (4) in a sliding manner, a limiting sliding rod (7) is fixedly connected between the fixed moving plates (4), a sliding seat (8) is connected to the limiting sliding rod (7) in a sliding manner, the sliding seat (8) is connected with the ball screw (6) in a, the device is characterized in that two symmetrical longitudinal moving sliding rods (12) are fixedly connected to the upper end of the compression roller frame (9), and the longitudinal moving sliding rods (12) are connected with the sliding table seat (8) in a sliding mode.
2. The strip uncoiling transverse crease flattening device of claim 1, characterized in that: slide pedestal (8) upper end fixedly connected with nut sleeve pipe (10), nut sleeve pipe (10) cover is located on ball screw (6) and with ball screw (6) threaded connection.
3. The strip uncoiling transverse crease flattening device of claim 1, characterized in that: sliding rod sleeve pipe (11) are fixedly connected to upper portion of sliding seat (8), sliding rod sleeve pipe (11) are sleeved on limiting sliding rod (7) and are connected with limiting sliding rod (7) in a sliding mode.
4. The strip uncoiling transverse crease flattening device of claim 1, characterized in that: indulge and move slide bar (12) and go up the cover and be equipped with interior top spring (13), interior top spring (13) lower extreme and pedestal (8) fixed connection, interior top spring (13) upper end with indulge and move slide bar (12) tip fixed connection.
5. The strip uncoiling transverse crease flattening device of claim 1, characterized in that: two be equipped with between the vertical movement slide bar (12) and adjust worm (16), it is equipped with pivot seat (15) to adjust worm (16) downside, pivot seat (15) outer loop and slide carriage seat (8) fixed connection, pivot seat (15) inner ring and regulation worm (16) fixed connection, compression roller frame (9) upper portion fixedly connected with runs through driven rack (14) of slide carriage seat (8), driven rack (14) are connected with regulation worm (16) meshing.
6. The strip uncoiling transverse crease flattening device of claim 1, characterized in that: go up bearing roller (3) both sides and be equipped with aversion slide rail (19), rack (1) fixed connection is placed with the steel sheet to aversion slide rail (19) lower extreme, it is equipped with body frame pulley (18) to surely move board (4) downside, two body frame pulley (18) respectively with the both ends fixed connection of flattening balladeur train (2), flattening balladeur train (2) are through body frame pulley (18) and steel sheet placement rack (1) sliding connection.
7. The strip uncoiling transverse crease flattening device of claim 1, characterized in that: the steel sheet is placed equal fixedly connected with location slide rail (20) in rack (1) both sides limit, the locating hole has been seted up at flattening balladeur train (2) middle part, it is equipped with set screw (21) to insert in the locating hole, set screw (21) run through locating hole and flattening balladeur train (2) threaded connection, two set screw (21) are close to one end each other and are connected with two location slide rail (20) looks butt respectively.
8. The strip uncoiling transverse crease flattening device of claim 7, characterized in that: and an anti-slip rubber strip is adhered to the inside of the positioning sliding rail (20), and is blocked between the positioning sliding rail (20) and the positioning screw (21).
9. The strip uncoiling transverse crease flattening device of claim 1, characterized in that: motor (5) one side is kept away from in sliding stand seat (8) is equipped with ball bearing (17), ball bearing (17) inside and ball screw (6) fixed connection are kept away from motor (5) one side decide to move and seted up the transfer through-hole on board (4), ball bearing (17) are located the transfer through-hole and with transfer through-hole inner wall fixed connection, ball screw (6) are passed through ball bearing (17) and are decided to move board (4) and rotate and be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020694046.9U CN212285384U (en) | 2020-04-30 | 2020-04-30 | Strip steel uncoiling transverse crease leveling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020694046.9U CN212285384U (en) | 2020-04-30 | 2020-04-30 | Strip steel uncoiling transverse crease leveling device |
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| Publication Number | Publication Date |
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| CN212285384U true CN212285384U (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020694046.9U Active CN212285384U (en) | 2020-04-30 | 2020-04-30 | Strip steel uncoiling transverse crease leveling device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112974572A (en) * | 2021-05-02 | 2021-06-18 | 李涛 | Building steel structure metal material repair equipment |
| CN113857296A (en) * | 2021-10-12 | 2021-12-31 | 徐州卓越精密科技有限公司 | Sheet metal flattening straightener |
-
2020
- 2020-04-30 CN CN202020694046.9U patent/CN212285384U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112974572A (en) * | 2021-05-02 | 2021-06-18 | 李涛 | Building steel structure metal material repair equipment |
| CN112974572B (en) * | 2021-05-02 | 2023-03-14 | 山东昌源材料科技有限公司 | Building steel structure metal material repair equipment |
| CN113857296A (en) * | 2021-10-12 | 2021-12-31 | 徐州卓越精密科技有限公司 | Sheet metal flattening straightener |
| CN113857296B (en) * | 2021-10-12 | 2024-03-22 | 徐州卓越精密科技有限公司 | Metal sheet leveling and straightening device |
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