Metal plate bending device

Abstract

The utility model belongs to the technical field of metal plate bending, and particularly relates to a metal plate bending device which comprises a base. Four stand columns are fixedly connected to the base, a supporting plate is fixedly connected to the top ends of the four stand columns in a matched mode, a placing table is installed on the base, a first pneumatic cylinder is installed on the supporting plate, a first pneumatic rod is assembled at the acting end of the first pneumatic cylinder, and a first fixing frame is fixedly connected to the bottom end of the first pneumatic rod. Rotating plates are rotationally installed on the two side walls of the first fixing frame, pressing rollers are rotationally installed at the bottom ends of the two rotating plates in a matched mode, an upper bending mold is rotationally installed at the top ends of the two rotating plates in a matched mode, two positioning holes are formed in the rotating plates, and screw rods are inserted into the positioning holes in a penetrating mode; when the metal plate bending device is used, curved surface bending and right-angle bending can be conveniently and alternately replaced, bending treatment of a curved surface and a right angle of a metal plate can be completed without replacing equipment back and forth, and the bending efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal plate bending, in particular to a metal plate bending device. Background Art

[0002] Metal plates are decorative plates with metal materials as the base material. Common metal types include aluminum and aluminum alloys, steel plates, stainless steel, copper, etc. During the processing of metal plates, bending equipment is often required to be used to bend them.

[0003] The existing metal plate bending device is mainly composed of a workbench, a pneumatic cylinder, an upper bending mold and a lower mold. When bending the metal plate, the metal plate to be bent is first placed on the workbench, and then the pneumatic cylinder is operated to move the upper bending mold vertically downward. With the cooperation of the lower mold, the metal plate can be bent through the stamping and bending mechanism.

[0004] Since curved bending and right-angle bending are both common bending methods, the existing metal plate bending device is not convenient for switching between curved bending and right-angle bending during bending. It is necessary to switch to another bending equipment to complete the curved and right-angle bending of the metal plate, which greatly reduces the bending efficiency. Therefore, a metal plate bending device is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems raised by the above-mentioned background technology, the utility model proposes a metal plate bending device.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a metal sheet bending device described in the utility model comprises a base; four columns are fixedly connected to the base, the top ends of the four columns are matched and fixedly connected to a support plate, a first pneumatic cylinder is installed on the support plate, the action end of the first pneumatic cylinder is equipped with a first pneumatic rod, the bottom end of the first pneumatic rod is fixedly connected to a first fixed frame, rotating plates are rotatably installed on both side walls of the first fixed frame, the bottom ends of the two rotating plates are matched and rotatably installed with pressing rollers, and the top ends of the two rotating plates are matched and rotated with an upper folding roller. Bending mold, the rotating plate is provided with two positioning holes, a screw is inserted in the positioning hole, and one end of the screw passes through the first fixing frame and is fixed with a nut, and the other end of the screw is sleeved with a locking nut, and the base is fixed with a second fixing frame, and the lower mold is rotatably installed in the second fixing frame, and two positioning plug holes are provided on both sides of the second fixing frame, and a positioning plug rod is inserted in the positioning plug hole, and one end of the positioning plug rod is in conflict with the outer side wall of the lower mold, when the metal plate is bent, the pressing roller is moved vertically downward by the action of the first pneumatic cylinder, Thereby, the metal plate can be pressed and limited. When bending, the bending roller is moved downward by pressing the swing rod, so that the bending roller applies pressure to the metal plate, so that the bending process of the curved surface of the metal plate can be completed. When the metal plate is bent at a right angle, the screw is pulled out from the positioning hole to rotate the rotating plate, so that the pressing roller and the upper bending mold are also rotated. When the upper bending mold rotates to the lowest end, the screw is rotated back into the positioning hole, and then the rotating plate is fixed by the locking nut, so that the upper bending mold can be fixed at the current position. The upper bending mold is moved vertically downward, and with the cooperation of the lower mold, the right-angle bending of the metal plate can be completed by stamping. This structural design makes it easy to alternate between curved surface bending and right-angle bending. There is no need to change equipment back and forth to complete the bending of the curved surface and right angles of the metal plate, which greatly improves the bending efficiency.

[0007] Preferably, swing rods are rotatably installed on both outer side walls of the second fixed frame, and a slide groove is opened on the swing rod, and a slider is inserted in the slide groove. A bending roller is rotatably installed between the two sliders through a rotating shaft. When performing the bending process, the bending roller is set to facilitate the subsequent curved bending process of the metal plate.

[0008] Preferably, a limiting groove is provided on the swing rod, and the limiting groove is connected with the slide groove, a slide rod is arranged in the limiting groove, one end of the slide rod is fixedly connected to the slider, and the other end of the slide rod is provided with a threaded portion, and the threaded portion is sleeved with a first locking cap. When the metal plate is bent, the bending roller can be moved away from the lower mold by moving the slider in the slide groove. When the two ends of the lower mold need to be replaced, the bending roller can be avoided from blocking and interfering, so that the two ends of the lower mold can be replaced smoothly.

[0009] Preferably, arc grooves are provided on the outer side walls of the two swing arms, angle markings are provided at the ends of the arc grooves, a limit rod is inserted in the arc groove, and the limit rod passes through the swing arm, and one end of the limit rod away from the arc groove is rotatably assembled with a second locking cap through threaded cooperation. When the metal plate is subjected to curved bending, the swing arm is pressed to drive the bending roller to move downward, thereby enabling the metal plate to be subjected to curved bending. During the downward movement of the swing arm, the limit rod moves along the arc groove and aligns with the angle marking, so that the metal plate can be bent at a precise angle, thereby improving the bending accuracy.

[0010] Preferably, a mounting seat is fixedly connected to the base, a plurality of conveying rollers are rotatably installed in the mounting seat, a cross plate is fixedly connected to the two columns, a second pneumatic cylinder is installed on the cross plate, a second pneumatic rod is equipped with the acting end of the second pneumatic cylinder, a third fixed frame is fixedly connected to the bottom end of the second pneumatic rod, a leveling roller is rotatably installed in the third fixed frame, and when the device is used, the conveying rollers are provided to facilitate the movement and transportation of the metal plate, and the leveling rollers are provided to facilitate the straightening of the uneven metal plate into a flat state.

[0011] Preferably, short rods are hinged on both sides of the cross plate, and the two short rods are cooperated and fixedly connected with an inclined frame, a pressing limit roller is rotatably installed in the inclined frame, a spring is fixedly connected between the inclined frame and the cross plate, and a first electrode plate is fixedly connected to one of the short rods, and an arc plate is fixedly connected to one side wall of the cross plate, an arc-shaped through groove is opened on the arc plate, a sliding column is arranged in the arc-shaped through groove, one end of the sliding column is fixedly connected to the second electrode plate, and the other end of the sliding column is sleeved with a third locking cap, an indicator light is installed on the top side of the cross plate, and the indicator light, the second electrode plate and the first electrode plate are electrically connected, so that when the bent metal plate is conveyed and loaded First, place the metal plate to be processed on the conveying roller, and push the metal plate to move to the bending processing area. When the metal plate moves to pass under the pressing limit roller, if the metal plate is in a straight state, the first electrode plate and the second electrode plate are always in contact, and the indicator light is always on. If the metal plate is uneven, the first electrode plate and the second electrode plate are misaligned and separated, and the indicator light is powered off and extinguished. At this time, it is necessary to start the second pneumatic cylinder to move the leveling roller vertically downward, so that the uneven metal plate can be straightened and flattened. Through this structural design, it can be ensured that the metal plates entering the bending processing area are in a flat state, thereby ensuring the processing quality of subsequent products.

[0012] The utility model is beneficial in that:

[0013] 1. When the utility model performs curved bending on the metal plate, the first pneumatic cylinder is used to move the pressing roller vertically downward, so that the metal plate can be pressed and limited. When bending, the swing rod is pressed to move the bending roller downward, so that the bending roller applies pressure to the metal plate, so that the bending process of the curved surface of the metal plate can be completed. When the metal plate is bent at a right angle, the screw is pulled out of the positioning hole to rotate the rotating plate, so that the pressing roller and the upper bending mold are also rotated. When the upper bending mold rotates to the lowest end, the screw is rotated back into the positioning hole, and then the rotating plate is locked by the locking nut. The plate is fixed, so that the upper bending mold can be fixed in the current position, and then the positioning rod is pulled out from the positioning socket, and the two ends of the lower mold are rotated and replaced. After the replacement is completed, the positioning rod is re-entered into the positioning socket, so that the lower mold can be fixed in the current position, and then the first pneumatic cylinder is started to move the upper bending mold vertically downward. With the cooperation of the lower mold, the right-angle bending of the metal plate can be completed by stamping. This structural design is convenient for alternating between curved surface bending and right-angle bending. There is no need to change equipment back and forth to complete the bending of the curved surface and right angle of the metal plate, which greatly improves the efficiency of bending;

[0014] 2. When feeding the metal plate to be bent, first place the metal plate to be processed on the conveying roller, push the metal plate to move to the bending processing area, when the metal plate moves to pass under the pressing limit roller, if the metal plate is in a straight state, the first electrode plate and the second electrode plate are always in contact, and the indicator light is always on; if the metal plate is uneven, the first electrode plate and the second electrode plate are misaligned and separated, and the indicator light is powered off and extinguished. At this time, it is necessary to start the second pneumatic cylinder to move the leveling roller vertically downward, so that the uneven metal plate can be straightened and leveled. Through this structural design, it can be ensured that the metal plates entering the bending processing area are in a flat state, thereby ensuring the processing quality of subsequent products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a schematic diagram of the overall side view of the three-dimensional structure of the bending device;

[0017] Figure 2 It is a schematic diagram of the overall left-side stereoscopic structure of the bending device;

[0018] Figure 3 is a schematic diagram of the three-dimensional structure of the bending mechanism;

[0019] Figure 4 is a schematic diagram of the three-dimensional structure of the first fixing frame assembly;

[0020] Figure 5 is a schematic diagram of the three-dimensional structure of the second fixing frame assembly;

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the curved surface bending mold assembly;

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the swing rod assembly;

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the trigger mechanism;

[0024] Fig. 9 It is a schematic diagram of the three-dimensional structure of the arc plate assembly.

[0025] In the figure: 1, base; 2, column; 3, support plate; 4, first pneumatic cylinder; 5, first fixed frame; 6, rotating plate; 7, pressing roller; 8, bending mold; 9, positioning hole; 10, screw; 11, nut; 12, locking nut; 13, second fixed frame; 14, lower mold; 15, positioning hole; 16, positioning rod; 17, swing rod; 18, slide groove; 19, slider; 20, rotating shaft; 21, bending roller; 22, limit groove; 23 , slide rod; 24, first locking cap; 25, arc groove; 26, limit rod; 27, mounting seat; 28, conveying roller; 29, horizontal plate; 30, second pneumatic cylinder; 31, third fixed frame; 32, leveling roller; 33, short rod; 34, tilting frame; 35, pressing limit roller; 36, first electrode plate; 37, arc plate; 38, arc through groove; 39, slide column; 40, second electrode plate; 41, third locking cap; 42, indicator light; 43, spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-7As shown, a metal sheet bending device comprises a base 1; four columns 2 are fixedly connected to the base 1, and the top ends of the four columns 2 are fixedly connected to a support plate 3, a first pneumatic cylinder 4 is installed on the support plate 3, and the action end of the first pneumatic cylinder 4 is equipped with a first pneumatic rod, and the bottom end of the first pneumatic rod is fixedly connected to a first fixed frame 5, and rotating plates 6 are rotatably installed on both side walls of the first fixed frame 5, and pressing rollers 7 are rotatably installed on the bottom ends of the two rotating plates 6, and an upper bending mold 8 is rotatably installed on the top ends of the two rotating plates 6, and two positioning holes 9 are provided on the rotating plate 6, and a screw 10 is inserted into the positioning hole 9, and one end of the screw 10 passes through the first fixed frame 5. A nut 11 is fixedly connected, and a locking nut 12 is sleeved on the other end of the screw rod 10. A second fixing frame 13 is fixedly connected to the base 1, and a lower mold 14 is rotatably installed in the second fixing frame 13. Two positioning holes 15 are provided on both sides of the second fixing frame 13. A positioning plug rod 16 is inserted in the positioning plug hole 15, and one end of the positioning plug rod 16 is in conflict with the outer wall of the lower mold 14; when bending the metal plate, the metal plate is firstly subjected to curved surface bending treatment. After the metal plate is conveyed to the bending area, the first pneumatic cylinder 4 is used to drive the pressing roller 7 to move vertically downward, so that the metal plate can be pressed and limited. When bending, the metal plate is bent by the first pneumatic cylinder 4. Press the swing rod 17 to move the bending roller 21 downward, so that the bending roller 21 applies pressure to the metal plate, so that the bending process of the curved surface of the metal plate can be completed. When the metal plate is bent at a right angle, the screw 10 is pulled out of the positioning hole 9 to rotate the rotating plate 6, so that the pressing roller 7 and the upper bending mold 8 are also rotated. When the upper bending mold 8 rotates to the lowest end, the screw 10 is rotated back into the positioning hole 9, and then the locking nut 12 is used to fix the rotating plate 6, so that the upper bending mold 8 can be fixed in the current position, and then the slider 19 is moved along the slide groove 18 to make the bending The roller 21 gradually moves away from the lower mold 14, and then the positioning rod 16 is pulled out from the positioning socket 15, and the two ends of the lower mold 14 are rotated and replaced. After the replacement is completed, the positioning rod 16 is reinserted into the positioning socket 15, so that the lower mold 14 can be fixed in the current position, and then the first pneumatic cylinder 4 is started to move the upper bending mold 8 vertically downward. With the cooperation of the lower mold 14, the right-angle bending of the metal plate can be completed by stamping. This structural design facilitates the alternating replacement of curved surface bending and right-angle bending. There is no need to change equipment back and forth to complete the bending of the curved surface and right angles of the metal plate, which greatly improves the bending efficiency.

[0028] A swing rod 17 is rotatably mounted on both outer side walls of the second fixing frame 13, and a slide groove 18 is provided on the swing rod 17. A slider 19 is inserted in the slide groove 18. A bending roller 21 is rotatably mounted between the two sliders 19 through a rotating shaft 20. A limiting groove 22 is provided on the swing rod 17, and the limiting groove 22 is communicated with the slide groove 18. A slide rod 23 is provided in the limiting groove 22, and one end of the slide rod 23 is fixedly connected to the slider 19, and the other end of the slide rod 23 is provided with a threaded portion, and a first locking cap 24 is sleeved on the threaded portion; when the metal plate is bent, the bending roller 21 can be moved away from the lower mold 14 by moving the slider 19 in the slide groove 18. When the two ends of the lower mold 14 need to be replaced, the bending roller 21 is avoided from blocking and interfering, so that the two ends of the lower mold 14 can be replaced smoothly.

[0029] See also Figure 7 As shown, arc grooves 25 are provided on the outer side walls of the two swing rods 17, and angle markings are provided at the ends of the arc grooves 25. A limit rod 26 is inserted in the arc grooves 25, and the limit rod 26 passes through the swing rod 17. One end of the limit rod 26 away from the arc groove 25 is rotatably assembled with a second locking cap through threaded cooperation; when the metal plate is subjected to curved bending, the swing rod 17 is pressed to drive the bending roller 21 to move downward, so that the metal plate can be subjected to curved bending. During the downward movement of the swing rod 17, the limit rod 26 moves along the arc groove 25 and aligns with the angle markings, so that the metal plate can be bent at a precise angle, thereby improving the bending accuracy.

[0030] See also Figure 1 and Figure 8-9As shown, the base 1 is fixedly connected with a mounting seat 27, and a plurality of conveying rollers 28 are rotatably mounted in the mounting seat 27. A transverse plate 29 is fixedly connected to the two uprights 2. A second pneumatic cylinder 30 is mounted on the transverse plate 29. A second pneumatic rod is mounted on the action end of the second pneumatic cylinder 30. A third fixed frame 31 is fixedly connected to the bottom end of the second pneumatic rod. A leveling roller 32 is rotatably mounted in the third fixed frame 31. Short rods 33 are hinged on both sides of the transverse plate 29. The two short rods 33 are hinged on the two sides of the transverse plate 29. 3 is fixedly connected with an inclined frame 34, in which a pressing limit roller 35 is rotatably installed, and a spring 43 is fixedly connected between the inclined frame 34 and the horizontal plate 29. A first electrode plate 36 is fixedly connected to one of the short rods 33, and an arc plate 37 is fixedly connected to one side wall of the horizontal plate 29. An arc through groove 38 is formed on the arc plate 37, and a sliding column 39 is arranged in the arc through groove 38. One end of the sliding column 39 is fixedly connected to the second electrode plate 40, and the other end of the sliding column 39 is sleeved with a There is a third locking cap 41, and an indicator light 42 is installed on the top side of the horizontal plate 29, and the indicator light 42, the second electrode plate 40 and the first electrode plate 36 are electrically connected; when the bent metal plate is conveyed and loaded, the metal plate to be processed is first placed on the conveying roller 28, and the metal plate is pushed to move to the bending processing area. When the metal plate moves to pass under the pressing limit roller 35, if the metal plate is in a straight state, the first electrode plate 36 and the second electrode plate 40 are always in contact, and the indicator light 42 is in a long-on state. If the metal plate is uneven, the first electrode plate 36 and the second electrode plate 40 are misaligned and separated, and the indicator light 42 is powered off and extinguished. At this time, the second pneumatic cylinder 30 needs to be started to move the flattening roller 32 vertically downward, so that the uneven metal plate can be straightened and flattened. Through this structural design, it can be ensured that the metal plates entering the bending processing area are all in a flat state, thereby ensuring the processing quality of subsequent products.

[0031] Working principle: Since curved bending and right-angle bending are both common bending methods, the existing metal plate bending device is not convenient to alternate between curved bending and right-angle bending when bending. It is necessary to switch to another bending device to complete the bending of the metal plate curved surface and right angle, which greatly reduces the bending efficiency. Therefore, a metal plate bending device is proposed to solve the above problems. When bending the metal plate, the metal plate is firstly subjected to curved bending treatment, and the metal plate is transported to the bending machine. After being sent to the bending area, the first pneumatic cylinder 4 is used to drive the pressing roller 7 to move vertically downward, so that the metal plate can be pressed and limited. When bending, the swing rod 17 is pressed to make the bending roller 21 move downward, so that the bending roller 21 applies pressure to the metal plate, so that the bending process of the curved surface of the metal plate can be completed. When the metal plate is bent at a right angle, the screw 10 is pulled out of the positioning hole 9 to rotate the rotating plate 6, so that the pressing roller 7 and the upper The bending die 8 also rotates accordingly. When the upper bending die 8 rotates to the lowest end, the screw 10 is rotated again into the positioning hole 9, and then the locking nut 12 is used to fix the rotating plate 6, so that the upper bending die 8 can be fixed in the current position, and then the slider 19 is moved along the slide groove 18, so that the bending roller 21 gradually moves away from the lower die 14, and then the positioning plug rod 16 is pulled out from the positioning plug hole 15, and the two ends of the lower die 14 are rotated and replaced. After the replacement is completed, the positioning plug rod 16 is re-transmitted into the positioning plug hole 15, so that the lower die 14 can be fixed in the current position, and then the first pneumatic cylinder 4 is started to move the upper bending die 8 vertically downward. With the cooperation of the lower die 14, the right-angle bending of the metal plate can be completed by stamping. This structural design is convenient for alternating between curved surface bending and right-angle bending. There is no need to change the equipment back and forth, and the bending of the curved surface and right angle of the metal plate can be completed, which greatly improves the efficiency of bending.

[0032] When feeding the metal plate to be bent, first place the metal plate to be processed on the conveying roller 28, and push the metal plate to move to the bending processing area. When the metal plate moves to pass under the pressing limit roller 35, if the metal plate is in a straight state, the first electrode plate 36 and the second electrode plate 40 are always in contact, and the indicator light 42 is in a long-on state. If the metal plate is uneven, the first electrode plate 36 and the second electrode plate 40 are misaligned and separated, and the indicator light 42 is powered off and extinguished. At this time, it is necessary to start the second pneumatic cylinder 30 to move the smoothing roller 32 vertically downward, so that the uneven metal plate can be straightened and flattened. Through this structural design, it can be ensured that the metal plates entering the bending processing area are all in a flat state, thereby ensuring the processing quality of subsequent products.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A metal sheet bending device, characterized in that: The invention comprises a base (1); four columns (2) are fixedly connected to the base (1); the top ends of the four columns (2) are fixedly connected to a support plate (3); a first pneumatic cylinder (4) is installed on the support plate (3); the action end of the first pneumatic cylinder (4) is equipped with a first pneumatic rod; the bottom end of the first pneumatic rod is fixedly connected to a first fixed frame (5); rotating plates (6) are rotatably installed on both side walls of the first fixed frame (5); pressing rollers (7) are rotatably installed on the bottom ends of the two rotating plates (6); upper bending molds (8) are rotatably installed on the top ends of the two rotating plates (6); two rotating plates (6) are provided with A positioning hole (9) is provided, a screw rod (10) is inserted into the positioning hole (9), and one end of the screw rod (10) passes through the first fixing frame (5) and is fixedly connected to a nut (11), and the other end of the screw rod (10) is sleeved with a locking nut (12), a second fixing frame (13) is fixedly connected to the base (1), a lower mold (14) is rotatably mounted in the second fixing frame (13), two positioning insertion holes (15) are provided on both sides of the second fixing frame (13), a positioning insertion rod (16) is inserted into the positioning insertion hole (15), and one end of the positioning insertion rod (16) is in contact with the outer side wall of the lower mold (14).

2. A metal sheet bending device according to claim 1, characterized in that: Swing rods (17) are rotatably mounted on both outer side walls of the second fixed frame (13), a slide groove (18) is provided on the swing rod (17), a slide block (19) is inserted into the slide groove (18), and a bending roller (21) is rotatably mounted between the two slide blocks (19) via a rotating shaft (20).

3. A metal sheet bending device according to claim 2, characterized in that: The swing rod (17) is provided with a limit groove (22), and the limit groove (22) is communicated with the slide groove (18). A slide rod (23) is arranged in the limit groove (22), one end of the slide rod (23) is fixedly connected to the slider (19), and the other end of the slide rod (23) is provided with a threaded portion, and the threaded portion is sleeved with a first locking cap (24).

4. A metal sheet bending device according to claim 2, characterized in that: The outer side walls of the two swinging rods (17) are each provided with an arc groove (25), the ends of the arc grooves (25) are provided with angle markings, a limit rod (26) is inserted into the arc grooves (25), and the limit rod (26) penetrates the swinging rod (17), and one end of the limit rod (26) away from the arc groove (25) is rotatably assembled with a second locking cap through threaded cooperation.

5. The metal sheet bending device according to claim 1, characterized in that: The base (1) is fixedly connected to a mounting seat (27), a plurality of conveying rollers (28) are rotatably mounted in the mounting seat (27), the two uprights (2) are matched and fixedly connected to a transverse plate (29), a second pneumatic cylinder (30) is mounted on the transverse plate (29), a second pneumatic rod is mounted on the action end of the second pneumatic cylinder (30), a third fixed frame (31) is fixedly connected to the bottom end of the second pneumatic rod, and a leveling roller (32) is rotatably mounted in the third fixed frame (31).

6. A metal sheet bending device according to claim 5, characterized in that: Short rods (33) are hinged on both sides of the transverse plate (29), and the two short rods (33) are fixedly connected to a tilting frame (34) in cooperation, and a pressing limit roller (35) is rotatably installed in the tilting frame (34), and a spring (43) is fixedly connected between the tilting frame (34) and the transverse plate (29). A first electrode plate (36) is fixedly connected to one of the short rods (33).

7. The metal sheet bending device according to claim 5, characterized in that: An arc-shaped plate (37) is fixedly connected to one side wall of the transverse plate (29), an arc-shaped through groove (38) is formed on the arc-shaped through groove (38), and a sliding column (39) is arranged in the arc-shaped through groove (38).

8. The metal sheet bending device according to claim 7, characterized in that: One end of the slide column (39) is fixedly connected to a second electrode plate (40), and the other end of the slide column (39) is sleeved with a third locking cap (41). An indicator light (42) is installed on the top side of the cross plate (29), and the indicator light (42), the second electrode plate (40) and the first electrode plate (36) are electrically connected.

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