A plate straightening machine for galvanized steel strip and a method thereof

Abstract

The present application relates to the technical field of plate straightening equipment, and specifically discloses a galvanized strip steel plate straightening machine, which comprises a base, a controller, a limiting structure, a pair of flattening structures and a pressing structure. The controller is fixedly arranged on the left end of the upper wall of the base and close to the rear side, the limiting structure is fixedly arranged on the upper wall of the base and located in the middle, a pair of the flattening structures are symmetrically arranged on the left and right sides of the limiting structure respectively, and the pressing structure is fixedly arranged on the upper wall of the base and located behind the limiting structure. The plate is vertically supported and then pressed and fixed, and the movable pushing and correction of the two ends are carried out to lay flat the plate. The length of the plate can be adjusted within a certain range, and the plate can be corrected in the state of being bent downward at the two ends with the aid of the pressing structure. The plate can be corrected in multiple directions and modes, and the plate is convenient for feeding and discharging.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plate straightening equipment, in particular to a galvanized steel strip plate shape straightening machine and method thereof. BACKGROUND

[0002] Galvanized steel strip is a common metal material. The galvanized steel strip is obtained by immersing cold-rolled or hot-rolled strip steel into high-temperature zinc liquid after surface cleaning, so that a zinc layer is attached to the surface of the strip steel, thereby playing a protective and decorative role. The zinc layer can prevent the corrosion of the strip steel matrix and prolong its service life. The processed steel plate may have an incorrect shape or be deformed during transportation, and needs to be corrected before being applied. However, the existing plate straightening mechanism is complex in structure, high in cost, and can only correct the bending of the horizontal plane of the plate, and cannot correct the bending of the wall thickness of the plate. Therefore, the present application provides a galvanized steel strip plate shape straightening machine and method thereof. SUMMARY

[0003] The present application aims to provide a galvanized steel strip plate shape straightening machine and method thereof to solve the problems in the background art.

[0004] To achieve the above-mentioned problem-solving, the present application provides the following technical scheme: a galvanized steel strip plate shape straightening machine, comprising a base, a controller, a limiting structure, a pair of flattening structures, and a pressing structure; the controller is fixedly arranged on the upper wall of the left end of the base and close to the rear side, the limiting structure is fixedly arranged on the upper wall of the base and located in the middle, a pair of the flattening structures are respectively and symmetrically arranged on the left and right sides of the limiting structure, and the pressing structure is fixedly arranged on the upper wall of the base and located behind the limiting structure.

[0005] Preferably, the limiting structure comprises a pair of legs, a correction seat, a first electric sliding rail, a second electric sliding rail, a pair of first roller frames, a pair of first rollers, and a pair of cameras; one end of each of the pair of legs is fixedly arranged on the upper wall of the base, one end of the correction seat is fixedly arranged on the other end of the pair of legs, the first electric sliding rail is fixedly arranged on the upper wall of the front end of the base and located in the middle, the second electric sliding rail is fixedly arranged on the first electric sliding rail and perpendicular to the first electric sliding rail, a second movable seat that moves relative to the second electric sliding rail is symmetrically arranged on the second electric sliding rail, one end of each of the pair of roller frames is fixedly arranged on the second movable seat of the second electric sliding rail, and the first roller frames move relative to each other, one end of each of the pair of first rollers is movably arranged on the first roller frame, and the bottom end of the first roller is located above one end of the correction seat, and one end of each of the pair of cameras is arranged on one end of the first roller frame and the camera is opposite to the correction seat.

[0006] Preferably, the flattening structure includes a third electric slide rail, a movable arm, three pairs of connecting rods, a first hydraulic cylinder, three mounting bolts, a pair of sliding seats, three supports, three second roller frames, and three second laying rollers; the third electric slide rail is fixedly mounted on the upper front wall of the base and located to the left of the first electric slide rail; one end of the movable arm is fixedly mounted on the third electric slide rail and moves back and forth, and the other end has a cross-shaped sliding groove through its middle; one end of each of the three pairs of connecting rods is connected in a relatively cross-shaped manner via pins, and the middle of one pair of connecting rods is movably connected via the mounting bolts; both ends of the first hydraulic cylinder are movably connected between one end of each connecting rod. One mounting bolt is screwed into the middle of the upper wall of one end of the moving arm, while the other two mounting bolts are movably inserted into the sliding grooves. A pair of sliding seats are both cross-shaped, and a pair of sliding seats are movably inserted into the sliding grooves of the moving arm, and the sliding seats are connected to the mounting bolts respectively. Three brackets are movably clamped onto the moving arm, and the two ends of the brackets are fixedly connected to the front and rear side walls of the sliding seats and the front and rear side walls of one end of the moving arm respectively. The brackets are located at the intersection of the connecting rods. One end of each of the three second roller frames is fixedly set on the upper wall of the three brackets, and the second roller frames correspond to the first roller frames. The three second laying rollers are movably set on the second roller frames respectively.

[0007] Preferably, the second laying roll and the first laying roll are on the same horizontal line.

[0008] Preferably, the pressing structure includes a fourth electric slide rail and a pair of pressing components. The fourth electric slide rail is fixedly mounted on the upper wall of the base and located behind the correction seat. One of the pressing components is fixedly mounted on the upper wall of the base and located on the left side of the fourth electric slide rail. The other pressing component is fixedly mounted on the fourth electric slide rail. The two pressing components are symmetrically located at the left and right ends of the correction seat. The pair of pressing components correspond to the flattening structure.

[0009] Preferably, the pressing assembly includes a support plate, a second hydraulic cylinder, a slide column, a slide frame, and a pair of pressing rollers;

[0010] The pallet is fixedly mounted on the fourth electric slide rail. One end of the second hydraulic cylinder is fixedly mounted on one end of the pallet. One end of the slide column is fixedly mounted on the middle of the upper wall of the pallet. One end of the slide frame is movably mounted on the slide column, and one end of the slide frame is connected to the telescopic end of the second hydraulic cylinder. The other end of the slide frame is located in front of the other end of the straightening seat. A pair of lower pressure rollers are movably mounted on the other end of the slide frame and are symmetrical to each other. The pair of lower pressure rollers are located above one end of the straightening seat.

[0011] Preferably, the lower pressure rollers are located between the second laying rollers.

[0012] Preferably, when the lower pressure roller moves left and right, one of the lower pressure rollers is located between the first laying rollers.

[0013] A galvanized steel plate type straightening method, comprising the following steps:

[0014] Step one, through the base support, the equipment is powered on through the controller to drive the equipment;

[0015] Step two, the plate to be corrected is erected and placed on the correction seat, and then the first laying roller in the limiting structure is used to extrude and fit the plate on the correction seat;

[0016] Step three, then drive the two flattening structures to apply force to the two ends of the plate to correct and fit the bent end of the plate on the correction seat;

[0017] Step four, if the two ends of the plate are twisted, the lower pressing structure can be driven to apply force to the two ends of the plate to correct.

[0018] The galvanized steel plate type straightening machine and method have the beneficial effects that the plate is vertically supported and then pressed and fixed, the movable pushing of the two ends is corrected and laid flat, the use requirement of plates of different lengths to a certain extent can be met, the length adjustment in a certain range is carried out, the downward or downward bending state of the two ends of the vertical plate can be corrected by the lower pressing structure, the correction in multiple directions and modes is realized, the vertical plate is convenient for feeding and discharging, and the plate has the following effects:

[0019] 1. The movable pushing of the two ends of the plate is corrected and laid flat, and the downward or downward bending state of the two ends of the vertical plate is corrected by the lower pressing structure, so that the flatness and shape accuracy of the plate in different directions can be effectively guaranteed, the quality of plate correction is greatly improved, and the state of plate bending is effectively used.

[0020] 2. Not only the plate is pressed and fixed, but also the pushing correction of the two ends and the auxiliary correction of the lower pressing structure, multiple correction modes are combined, various deformation problems of the plate can be more comprehensively handled, so that the plate as a whole achieves ideal correction effect.

[0021] 3. The use requirement of plates of different lengths to a certain extent can be met, and the length adjustment in a certain range is carried out, which means that the equipment has good universality, the vertical plate is convenient for feeding and discharging, compared with the traditional feeding and discharging mode of horizontally placed plates, the vertical plate is more convenient and fast in operation, the operator can more easily place the plate on the equipment or take it off, the physical consumption and operation difficulty in the feeding and discharging process are reduced, the multi-direction and mode correction ability and the convenient feeding and discharging operation are helpful to improve the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 This is a schematic diagram of the assembly structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the disassembled limiting structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the assembly structure of the limiting structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the flattening structure of the present invention.

[0026] Figure 5 This is a schematic diagram of the flattening structure assembly of the present invention;

[0027] Figure 6 This is a schematic diagram of the disassembled structure of the downward pressing structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the assembly structure of the downward pressing structure of the present invention;

[0029] Figure 8 For the present invention Figure 4 Enlarged view of section A in the image;

[0030] Figure 9 For the present invention Figure 4 Enlarged view of section B in the image;

[0031] Figure 10 For the present invention Figure 1 A magnified view of section C in the image.

[0032] In the diagram: 1. Base, 2. Controller, 3. Limiting structure, 31. Support leg, 32. Correcting seat, 33. First electric slide rail, 34. Second electric slide rail, 35. First roller frame, 36. First laying roller, 37. Camera, 4. Flattening structure, 41. Third electric slide rail, 42. Moving arm, 43. Connecting rod, 44. First hydraulic cylinder, 45. Mounting bolt, 46. Sliding seat, 47. Bracket, 48. Second roller frame, 49. Second laying roller, 5. Pressing structure, 51. Fourth electric slide rail, 52. Support plate, 53. Second hydraulic cylinder, 54. Sliding column, 55. Sliding frame, 56. Lower pressing roller, 6. Sliding groove. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please refer to Figures 1-10 The application provides a technical scheme: a galvanized strip plate straightening machine, comprising a base 1, a controller 2, a limiting structure 3, a pair of flattening structures 4 and a pressing structure 5; the base 1 is rectangular, the controller 2 is fixedly arranged on the upper wall of the left end of the base 1 and close to the rear side, the limiting structure 3 is fixedly arranged on the upper wall of the base 1 and located in the middle part, the pair of flattening structures 4 are respectively and symmetrically arranged on the left and right sides of the limiting structure 3, and the pressing structure 5 is fixedly arranged on the upper wall of the base 1 and located on the rear side of the limiting structure 3; the base 1 is used for supporting, the controller 2 is used for controlling the equipment, the limiting structure 3 is used for preliminarily limiting the verticality of the plate, the flattening structure 4 is used for correcting the bending of the plate after vertical laying, and the pressing structure 5 is used for correcting the bending of the plate in the up-down direction after vertical limiting.

[0035] As a further scheme of the application, the limiting structure 3 comprises a pair of supporting legs 31, a correcting seat 32, a first electric sliding rail 33, a second electric sliding rail 34, a pair of first roller frames 35, a pair of first rollers 36 and a pair of cameras 37; one end of the pair of supporting legs 31 is fixedly arranged on the upper wall of the base 1, the correcting seat 32 is L-shaped, one end of the correcting seat 32 is fixedly arranged on the other end of the pair of supporting legs 31, the first electric sliding rail 33 is fixedly arranged on the upper wall of the front end of the base 1 and located in the middle part, the second electric sliding rail 34 is fixedly arranged on the first electric sliding rail 33 and perpendicular to the first electric sliding rail 33, a second moving seat for relative movement is symmetrically arranged on the second electric sliding rail 34, one end of the pair of roller frames is fixedly arranged on the second moving seat of the second electric sliding rail 34, and the first roller frame 35 moves relatively, the pair of first rollers 36 are movably arranged on the first roller frame 35, and the bottom end of the first roller 36 is located above one end of the correcting seat 32, and the pair of cameras 37 are arranged on one end of the first roller frame 35 and opposite to the correcting seat 32; the supporting legs 31 support the correcting seat 32 to a certain height for corresponding to the first roller 36 and the second roller 49, the first electric sliding rail 33 drives the first roller 36 on the first roller frame 35 to move close to the correcting seat 32 for extrusion and fixation, the second electric sliding rail 34 can adjust the distance between the first rollers 36, and the cameras 37 are used for imaging and autonomously detecting the position and mode of the plate needing correction.

[0036] As a further scheme of the present application, the flattening structure 4 comprises a third electric sliding rail 41, a moving arm 42, three pairs of connecting rods 43, a first hydraulic cylinder 44, three mounting bolts 45, a pair of sliding seats 46, three supports 47, three second roller frames 48 and three second rollers 49; the third electric sliding rail 41 is fixedly arranged on the upper wall of the front end of the base 1 and located at the left side of the first electric sliding rail 33, one end of the moving arm 42 is fixedly arranged on the third electric sliding rail 41 and the moving arm 42 moves forward and backward, the moving arm 42 is a rectangular rod body, and a cross-shaped sliding groove 6 is formed in the middle of the other end of the moving arm 42, one end of each of the three pairs of connecting rods 43 is relatively crossed and movably connected by a pin shaft, and the middle of one pair of connecting rods 43 is movably connected by the mounting bolt 45, the two ends of the first hydraulic cylinder 44 are movably connected between one end of one of the connecting rods 43, one end of the mounting bolt 45 is screwed into the middle of the upper wall of the moving arm 42, the other two mounting bolts 45 are movably inserted into the sliding groove 6, the pair of sliding seats 46 are both cross-shaped, the pair of sliding seats 46 are movably inserted into the sliding groove 6 of the moving arm 42, and the sliding seats 46 are connected with the mounting bolts 45, the three supports 47 are movably clamped on the moving arm 42, and the two ends of the support 47 are fixedly connected with the front and rear side walls of the sliding seat 46 and the front and rear side walls of one end of the moving arm 42, the supports 47 are located at the crossed parts of the connecting rods 43, one end of each of the three second roller frames 48 is fixedly arranged on the upper wall of each of the three supports 47, and the second roller frame 48 corresponds to the first roller frame 35, and the three second rollers 49 are movably arranged on the second roller frame 48, and the second roller 49 is on the same horizontal line as the first roller 36; the second roller 49 on the second roller frame 48 moves relative to the correcting seat 32 to apply force to the curved plate to correct it, the first hydraulic cylinder 44 is driven to drive one pair of connecting rods 43 to relatively overturn, which promotes the synchronous overturning of the relatively connected connecting rods 43, and then adjusts the equidistant movement of the sliding seat 46 connected by the mounting bolt 45 in the sliding groove 6 of the moving arm 42, and then adjusts the distance between the three second rollers 49 to adjust the force adjustment range and position, in order to apply force to the plate by the second roller 49, the third electric sliding rail 41 can be replaced by a hydraulic drive force.

[0037] As a further scheme of the present application, the flattening structure 4 comprises a third electric sliding rail 41, a moving arm 42, three pairs of connecting rods 43, a first hydraulic cylinder 44, three mounting bolts 45, a pair of sliding seats 46, three supports 47, three second roller frames 48 and three second rollers 49; the third electric sliding rail 41 is fixedly arranged on the upper wall of the front end of the base 1 and located at the left side of the first electric sliding rail 33, one end of the moving arm 42 is fixedly arranged on the third electric sliding rail 41 and the moving arm 42 moves forward and backward, the moving arm 42 is a rectangular rod body, and a cross-shaped sliding groove 6 is formed in the middle of the other end of the moving arm 42, one end of each of the three pairs of connecting rods 43 is relatively crossed and movably connected by a pin shaft, and the middle of one pair of connecting rods 43 is movably connected by the mounting bolt 45, the two ends of the first hydraulic cylinder 44 are movably connected between one end of one of the connecting rods 43, one end of the mounting bolt 45 is screwed into the middle of the upper wall of the moving arm 42, the other two mounting bolts 45 are movably inserted into the sliding groove 6, the pair of sliding seats 46 are both cross-shaped, the pair of sliding seats 46 are movably inserted into the sliding groove 6 of the moving arm 42, and the sliding seats 46 are connected with the mounting bolts 45, the three supports 47 are movably clamped on the moving arm 42, and the two ends of the support 47 are fixedly connected with the front and rear side walls of the sliding seat 46 and the front and rear side walls of one end of the moving arm 42, the supports 47 are located at the crossed parts of the connecting rods 43, one end of each of the three second roller frames 48 is fixedly arranged on the upper wall of each of the three supports 47, and the second roller frame 48 corresponds to the first roller frame 35, and the three second rollers 49 are movably arranged on the second roller frame 48, and the second roller 49 is on the same horizontal line as the first roller 36; the second roller 49 on the second roller frame 48 moves relative to the correcting seat 32 to apply force to the curved plate to correct it, the first hydraulic cylinder 44 is driven to drive one pair of connecting rods 43 to relatively overturn, which promotes the synchronous overturning of the relatively connected connecting rods 43, and then adjusts the equidistant movement of the sliding seat 46 connected by the mounting bolt 45 in the sliding groove 6 of the moving arm 42, and then adjusts the distance between the three second rollers 49 to adjust the force adjustment range and position, in order to apply force to the plate by the second roller 49, the third electric sliding rail 41 can be replaced by a hydraulic drive force.

[0038] As a further scheme of the present application, the down-pressing assembly comprises a supporting plate 52, a second hydraulic cylinder 53, a slide column 54, a slide carriage 55 and a pair of down-pressing rollers 56; the supporting plate 52 is rectangular, and is fixedly arranged on the fourth electric slide rail 51; one end of the second hydraulic cylinder 53 is fixedly arranged on one end of the supporting plate 52; one end of the slide column 54 is fixedly arranged on the middle of the upper wall of the supporting plate 52; one end of the slide carriage 55 is movably sleeved on the slide column 54, and the other end of the slide carriage 55 is connected with the telescopic end of the second hydraulic cylinder 53; the other end of the slide carriage 55 is located on the front side of the other end of the correcting seat 32; the pair of down-pressing rollers 56 are movably arranged on the other end of the slide carriage 55 and are symmetrically arranged; and the pair of down-pressing rollers 56 are respectively located above one end of the correcting seat 32; the second hydraulic cylinder 53 and the slide column 54 are carried by the supporting plate 52; the slide carriage 55 is driven to ascend and descend by the telescopic second hydraulic cylinder 53 through the slide column 54; and the height and downward pressure of the down-pressing rollers 56 are adjusted.

[0039] As a further scheme of the present application, the down-pressing rollers 56 are respectively located between the second laying rollers 49, and are used to realize the down-pressing of the plate according to design requirements.

[0040] As a further scheme of the present application, when the down-pressing rollers 56 move leftward and rightward, one of the down-pressing rollers 56 is located between the first laying rollers 36, and is used to realize that the down-pressing rollers 56 can apply force to different positions of the plate according to design requirements.

[0041] Working principle:

[0042] Firstly, the device is powered on through the stable support of the base 1, and the device is controlled through the controller 2; the first laying rollers 36 and the second laying rollers 49 in the limiting structure 3 and the flattening structure 4 are close to the correcting seat 32 supported by the supporting leg 31 and keep a certain distance, so that the corresponding plate can be inserted into the correcting seat 32 and located between the other end of the correcting seat 32 and the first laying rollers 36 and the second laying rollers 49, and the middle of the plate is fixed at the first laying rollers 36 (the length of the processed plate cannot be greater than the length of the correcting seat 32 and the height of the other end of the correcting group, and the number of the correcting seat 32 and the second laying rollers 49 is set according to actual requirements);

[0043] Then, the first laying rollers 36 on the first roller frame 35 are driven to move relative to the plate through the driving of the first electric slide rail 33, so that the plate is pressed and adhered to the correcting seat 32 through the first laying rollers 36; at this time, the distance between the two first laying rollers 36 can be adjusted by driving the second electric slide rail 34 to realize the adjustment of the fixed position of the force, and imaging is performed by means of the camera 37, the bending direction of the plate is automatically detected based on the prior art, and the controller 2 is controlled;

[0044] When the plate is vertically fixed, the front side wall of the two ends of the plate is a wide wall, and the upper wall of the plate is a thickness wall of the plate; therefore, if the front and rear walls of the two ends of the plate are bent in the front and rear directions, the two sets of flattening structures 4 are driven, that is, the third electric sliding rail 41 drives the moving arm 42 to move forward and backward, and the second rolling frame 48 on the second rolling frame 48 exerts force on the two ends of the plate to press and squeeze, so as to make the bending part of the plate reset through the shielding of the correcting seat 32; at the same time, after the second rolling frame 49 contacts the front side wall of the plate, the first hydraulic cylinder 44 can be driven to extend and retract, one pair of connecting rods 43 is driven to rotate relative to the mounting bolt 45 through the extension and retraction of the first hydraulic cylinder 44, and all connecting rods 43 are cross-rotated, so as to realize the distance adjustment between the mounting bolts 45, that is, in the process of cross-rotation of the connecting rods 43, the mounting bolt 45 moves while driving the sliding seat 46 to move equidistantly in the sliding groove 6 of the moving arm 42, so as to adjust the distance between the second rolling frames 49, that is, the two sets of flattening structures 4 realize the movement of the second rolling frame 49 to the two sides, realize the flattening force in the form of pushing, correct or increase the distance, and then drive the moving arm 42 to move through the third electric sliding rail 41 for pressing and correcting (at this time, the third electric sliding rail 41 drives the force, which can be replaced by a hydraulic cylinder);

[0045] When the two ends of the vertically fixed plate are bent upward or downward, the distance between the second rolling frames 49 is adjusted to be larger after being limited by the limiting structure 3 and the flattening structure 4, and then the lower pressing assembly in the lower pressing structure 5 on the left side of the correcting seat 32 is driven to fix one end of the plate, that is, the second hydraulic cylinder 53 on the supporting plate 52 is driven to retract, the sliding carriage 55 is driven to slide down on the slide column 54, and the corresponding lower pressing roller 56 is driven to descend and press on the upper wall of the left end of the plate, and the lower pressing roller 56 passes between the two second rolling frames 49 to press and force.

[0046] Since the left end of the plate is limited in the front and rear directions and upward and downward directions, the fourth electric sliding rail 51 can be controlled to drive the other lower pressing assembly to move left and right to adjust the pressing position, and the second hydraulic cylinder 53 can be driven to drive the lower pressing roller 56 to descend to exert force on the other end of the plate to correct it, and the lower pressing roller 56 on the fourth electric sliding rail 51 also passes between the second rolling frames 49 or the first rolling frames 36 to change the pressing position, so as to finally realize the correction requirement in two directions.

[0047] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A straightening machine for galvanized steel strip, characterized in that, It includes a base (1), a controller (2), a limiting structure (3), a pair of flattening structures (4), and a pressing structure (5); the controller (2) is fixedly installed on the upper left wall of the base (1) and close to the rear side; the limiting structure (3) is fixedly installed on the upper wall of the base (1) and located in the middle; the pair of flattening structures (4) are symmetrically arranged on the left and right sides of the limiting structure (3); and the pressing structure (5) is fixedly installed on the upper wall of the base (1) and located behind the limiting structure (3). The limiting structure (3) includes a pair of support legs (31), a correction seat (32), a first electric slide rail (33), a second electric slide rail (34), a pair of first roller frames (35), a pair of first laying rollers (36), and a pair of cameras (37); One end of each pair of support legs (31) is fixedly mounted on the upper wall of the base (1), and one end of the correction seat (32) is fixedly mounted on the other end of the pair of support legs (31). The first electric slide rail (33) is fixedly mounted on the upper wall of the front end of the base (1) and located in the middle. The second electric slide rail (34) is fixedly mounted on the first electric slide rail (33) and is perpendicular to the first electric slide rail (33). The second electric slide rail (34) is symmetrically mounted with relatively movable second moving seats. One end of each pair of roller frames is fixedly mounted on the second moving seats of the second electric slide rail (34) and the first roller frames (35) are relatively movable. One pair of first laying rollers (36) are movably mounted on the first roller frames (35) and the bottom end of the first laying rollers (36) is located above one end of the correction seat (32). One pair of cameras (37) are respectively mounted on one end of the first roller frames (35) and the cameras (37) are opposite to the correction seat (32).

2. The galvanized steel strip straightening machine according to claim 1, characterized in that, The flattening structure (4) includes a third electric slide rail (41), a moving arm (42), three pairs of connecting rods (43), a first hydraulic cylinder (44), three mounting bolts (45), a pair of sliding seats (46), three brackets (47), three second roller frames (48), and three second laying rollers (49). The third electric slide rail (41) is fixedly mounted on the upper front wall of the base (1) and located to the left of the first electric slide rail (33). One end of the moving arm (42) is fixedly mounted on the third electric slide rail (41) and the moving arm (42) moves back and forth. A cross-shaped sliding groove (6) is opened through the middle of the other end. One end of the three pairs of connecting rods (43) is connected in series by a pin, and the middle of one pair of connecting rods (43) is movably connected by the mounting bolt (45). The two ends of the first hydraulic cylinder (44) are movably connected between one end of one of the connecting rods (43). One mounting bolt (45) is screwed into the middle of the upper wall of one end of the moving arm (42), and the other two mounting bolts (45) are movably inserted into the sliding groove (6). Each pair of sliding seats (46) is cross-shaped. Each pair of sliding seats (46) is movably inserted into the sliding groove (6) of the moving arm (42). The sliding seats (46) are connected to the mounting bolts (45). The three brackets (47) are movably clamped on the moving arm (42). The two ends of the brackets (47) are fixedly connected to the front and rear side walls of the sliding seats (46) and the front and rear side walls of one end of the moving arm (42). The brackets (47) are located at the intersection of the connecting rods (43). One end of each of the three second roller frames (48) is fixedly set on the upper wall of the three brackets (47). The second roller frames (48) correspond to the first roller frames (35). The three second laying rollers (49) are movably set on the second roller frames (48).

3. A galvanized steel strip straightening machine according to claim 2, characterized in that, The second laying roller (49) and the first laying roller (36) are on the same horizontal line.

4. A galvanized strip steel plate straightening machine according to claim 3, characterized in that, The pressing structure (5) includes a fourth electric slide rail (51) and a pair of pressing components. The fourth electric slide rail (51) is fixedly installed on the upper wall of the base (1) and located on the rear side of the correction seat (32). One of the pressing components is fixedly installed on the upper wall of the base (1) and located on the left side of the fourth electric slide rail (51). The other pressing component is fixedly installed on the fourth electric slide rail (51). The two pressing components are located symmetrically at the left and right ends of the correction seat (32). The pair of pressing components correspond to the flattening structure (4).

5. A galvanized steel strip straightening machine according to claim 4, characterized in that, The pressing assembly includes a support plate (52), a second hydraulic cylinder (53), a slide column (54), a carriage (55), and a pair of pressing rollers (56); The pallet (52) is fixedly mounted on the fourth electric slide rail (51). One end of the second hydraulic cylinder (53) is fixedly mounted on one end of the pallet (52). One end of the slide column (54) is fixedly mounted on the middle of the upper wall of the pallet (52). One end of the slide frame (55) is movably mounted on the slide column (54), and one end of the slide frame (55) is connected to the telescopic end of the second hydraulic cylinder (53). The other end of the slide frame (55) is located in front of the other end of the straightening seat (32). A pair of lower pressure rollers (56) are movably mounted on the other end of the slide frame (55) and are symmetrical to each other. The pair of lower pressure rollers (56) are located above one end of the straightening seat (32).

6. A galvanized steel strip straightening machine according to claim 5, characterized in that, The lower pressure roller (56) is located between the second laying roller (49).

7. A galvanized steel strip straightening machine according to claim 6, characterized in that, When the lower pressure roller (56) moves left and right, one of the lower pressure rollers (56) is located between the first laying rollers (36).

8. A method for straightening galvanized steel strip, applied in a galvanized steel strip straightening machine as described in claim 7, characterized in that, Includes the following steps: Step 1: Supported by the base (1), power on the device and drive it through the controller (2); Step 2: Place the board to be corrected upright on the correction seat (32), and then press and adhere the board to the correction seat (32) by the first laying roller (36) in the limiting structure (3); Step 3: Then drive the two flattening structures (4) to apply force to both ends of the plate, straighten the bent ends of the plate and attach them to the straightening seat (32); Step 4: If the two ends of the plate are twisted, the pressing structure (5) can be driven to apply force to the two ends of the plate to correct them.

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