CN221086812U - Steel sheet bending device - Google Patents

Abstract

The utility model relates to the technical field of slot forming, in particular to a steel sheet bending device. Including U template, electronic slide rail one, movable plate and installation piece one, the movable plate be equipped with two and with electronic slide rail one sliding connection, installation piece one locates two the centre of movable plate, the top of U template has set firmly pneumatic cylinder one, the output of pneumatic cylinder one has set firmly installation piece two, the bottom of installation piece two is equipped with the shaping briquetting of bending to the steel sheet, be equipped with on the movable plate to the transportation fixture of steel sheet transportation and centre gripping. According to the steel sheet bending device, through the design of the conveying clamping mechanism, the steel sheet bending device can bend and shape steel sheets with various sizes, the practicability of the device is improved, and through the design of the bearing assembly, when the steel sheets are gradually pressed and bent downwards by the forming pressing block, the bottom surface of the steel sheets is always kept straight under the support of the bearing block, and the forming quality of steel sheet bending is improved.

Description

Steel sheet bending device

Technical Field

The utility model relates to the technical field of slot forming, in particular to a steel sheet bending device.

Background

The wire slot is also called as a wire slot, a wiring slot and a wire slot, and is an electrician tool for standard arrangement of wires such as a power wire, a data wire and the like, and is fixed on a wall or a ceiling.

When the steel sheet is processed into the metal wire slot, the steel sheet is required to be bent to form a U-shaped wire slot for standard arrangement of wires such as a power line or a data line; most of the existing steel sheet bending devices can only bend steel sheets with one size specification when bending the steel sheets, so that the forming size of the metal wire slot is single, and the practicability is poor;

On the other hand, when bending the steel sheet, the bottom surface middle part of steel sheet produces the radian when being pressed for because there is certain radian to produce the surplus in the middle part of the bottom surface of metal sheet when the metal sheet is bent the shaping completely, and this surplus is difficult to stretch out from the metal sheet both sides, causes fashioned metal wire casing bottom roughness lower, influences the shaping quality of metal wire casing.

Therefore, we design a steel sheet bending device for providing another technical scheme for the technical problems.

Disclosure of utility model

Accordingly, it is necessary to provide a steel sheet bending device capable of bending steel sheets of various sizes and having a good molding effect, in order to solve the above-mentioned problems.

In order to solve the technical problems, the utility model adopts the following technical scheme:

The utility model provides a steel sheet bending device, includes U template, electronic slide rail one, movable plate and installation piece one, the movable plate be equipped with two and with electronic slide rail one sliding connection, installation piece one locates two the centre of movable plate, the top of U template has set firmly pneumatic cylinder one, the output of pneumatic cylinder one has set firmly installation piece two, the bottom of installation piece two is equipped with the shaping briquetting of bending the steel sheet, be equipped with on the movable plate to the transportation of steel sheet and the transport fixture of centre gripping.

Preferably, the conveying clamping mechanism comprises an L-shaped conveying plate arranged at the top end of the movable plate, a mounting plate is fixedly arranged in the middle of the L-shaped conveying plate, a plurality of rollers are rotatably connected to the mounting plate and are close to one end of the mounting plate, the mounting plate is fixedly provided with a gear through which a chain is meshed, a driven belt wheel I is fixedly arranged on the roller positioned at the front end of the mounting plate, a driving belt wheel I is arranged below the driven belt wheel I, the driven belt wheel I is connected with the driving belt wheel I through a transmission belt, a rotating shaft I is arranged in the middle of the driving belt wheel I, one end of the rotating shaft I is rotatably connected with the mounting plate, and a driving motor is connected to the other end of the rotating shaft I.

Preferably, the conveying clamping mechanism further comprises a third mounting block arranged on the outer side of the first electric sliding rail, a first compression spring is fixedly arranged in the third mounting block, a moving block is fixedly arranged at the other end of the first compression spring, the moving block is slidably clamped in the third mounting block, a second rotating shaft is fixedly arranged on the moving block, an adjusting belt wheel is fixedly arranged at the end of the second rotating shaft, the first rotating shaft is located at a section between the first driving belt wheel and the mounting plate, a first transmission bevel gear is fixedly arranged on the first transmission bevel gear, a second transmission bevel gear is meshed with the first transmission bevel gear, a third rotating shaft is fixedly arranged in the middle of the second transmission bevel gear, a first connecting block which is matched with the third rotating shaft is arranged on the L-shaped conveying plate, one end, close to the outer side, of the third rotating shaft penetrates through the first connecting block, is respectively connected with the second driving belt wheel and the second driven belt wheel, and the second adjusting belt wheel are connected through a transmission belt.

Preferably, the top of mounting panel has set firmly a plurality of installation piece IV, the inside of installation piece IV has set firmly a plurality of compression spring II, compression spring II's the other end fixedly connected with grip block, the grip block is equipped with a plurality of gyro wheels I with the inconsistent one end of steel sheet, the both ends bottom of grip block is equipped with the guide block, set firmly a plurality of guide plates I with guide block assorted on mounting panel and the L type transport board, the top both sides of grip block are equipped with the lug, two the relative one end of mounting panel has set firmly the guide plate II that leads to the steel sheet when carrying, the guide plate II cover is established on the cylinder.

Preferably, an electric sliding rail II is arranged at one end, close to the outer side, of the L-shaped conveying plate, an installation block V is arranged on the electric sliding rail II in a sliding mode, a hydraulic cylinder II is fixedly arranged on the installation block V, a connecting block II is fixedly arranged at the output end of the hydraulic cylinder II, and a pre-pressing cutter is fixedly arranged at the bottom end of the connecting block II.

Preferably, the inside of installation piece one is equipped with the bearing subassembly of bearing when bending the steel sheet, the bearing subassembly includes the stopper, the inside of installation piece one is equipped with a plurality of mounting holes, set firmly a plurality of compression springs three in the mounting hole, compression spring three's the other end and stopper fixed connection, the other end of stopper sets firmly the connecting rod, the top of connecting rod is equipped with the bearing piece.

Preferably, the inside symmetry of installation piece two is equipped with the mounting groove, compression spring four has been set firmly in the mounting groove, compression spring four's the other end has set firmly the connecting plate, the connecting plate has set firmly the plug rod on, the front end of plug rod is equipped with a plurality of gyro wheels two, be equipped with on installation piece two and the shaping briquetting with plug rod assorted spliced eye, the top middle part of connecting plate has set firmly the pull rod, the top of installation piece two is equipped with the opening that is linked together with the mounting groove and pull rod looks adaptation.

It can be clearly seen that the technical problems to be solved by the present application can be necessarily solved by the above-mentioned technical solutions of the present application.

Meanwhile, through the technical scheme, the utility model has at least the following beneficial effects:

1. According to the steel sheet bending device, through the design of the conveying clamping mechanism, the steel sheet bending device can convey and clamp steel sheets with various sizes, and the steel sheets are bent and molded through the molding pressing block, so that the practicability of the device is improved.

2. According to the steel sheet bending device provided by the utility model, through the design of the bearing assembly, when the forming pressing block gradually presses and bends the steel sheet downwards, the middle part of the bottom surface of the steel sheet is always kept straight under the support of the bearing block, and the forming quality of steel sheet bending is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the structure of the pre-pressed state of the steel sheet of the present utility model;

FIG. 3 is a schematic view of the structure of FIG. 2A according to the present utility model;

FIG. 4 is a schematic view of the structure of the steel sheet in the bent state of the utility model;

FIG. 5 is a schematic view of a transport clamping mechanism according to the present utility model;

FIG. 6 is a schematic view of the structure of FIG. 5B according to the present utility model;

FIG. 7 is a schematic view of the construction of the support assembly of the present utility model;

Fig. 8 is a schematic view of the internal structure of a second mounting block according to the present utility model.

In the figure: 1. a U-shaped plate; 2. an electric slide rail I; 3. a moving plate; 4. a first mounting block; 5. a first hydraulic cylinder; 6. a second mounting block; 7. forming a pressing block; 8. an L-shaped conveying plate; 9. a mounting plate; 10. a roller; 11. a gear; 12. a chain; 13. a driven belt wheel I; 14. a first driving belt wheel; 15. a first rotating shaft; 16. a driving motor; 17. a third mounting block; 18. compressing a first spring; 19. a moving block; 20. a second rotating shaft; 21. an adjusting belt wheel; 22. a transmission bevel gear I; 23. a transmission bevel gear II; 25. a first connecting block; 26. a driving belt wheel II; 27. a driven belt wheel II; 28. a mounting block IV; 29. compression spring II; 30. a clamping plate; 31. a roller I; 32. a guide block; 33. a first guide plate; 34. a bump; 35. a second guide plate; 36. an electric sliding rail II; 37. a mounting block V; 38. a second hydraulic cylinder; 39. a second connecting block; 40. a pre-pressing knife; 41. a mounting hole; 42. compression spring III; 43. a limiting block; 44. a connecting rod; 45. a support block; 46. a mounting groove; 47. compression spring IV; 48. a connecting plate; 49. inserting a connecting rod; 50. a second roller; 51. a plug hole; 52. a pull rod; 53. an opening.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Example 1

Referring to fig. 1-6, a steel sheet bending device comprises a U-shaped plate 1, an electric sliding rail I2, a moving plate 3 and a mounting block I4, wherein the moving plate 3 is provided with two moving plates and is in sliding connection with the electric sliding rail I2, the mounting block I4 is arranged in the middle of the two moving plates 3, a hydraulic cylinder I5 is fixedly arranged at the top end of the U-shaped plate 1, a mounting block II 6 is fixedly arranged at the output end of the hydraulic cylinder I5, a forming pressing block 7 for bending a steel sheet is arranged at the bottom end of the mounting block II 6, and a conveying and clamping mechanism for conveying and clamping the steel sheet is arranged on the moving plate 3.

Through the design of the conveying clamping mechanism, the steel sheet bending device can convey and clamp steel sheets with various sizes, and the steel sheets are bent into U-shaped wire slots through extrusion of the forming press block 7 on the steel sheets, so that the practicability of the steel sheet bending device is improved.

It should be noted that, in this embodiment, the bottom end of the moving plate 3 is provided with a square groove, and the dimension of the square groove is slightly larger than that of the first mounting block 4, so as to avoid the moving interference generated between the moving plate 3 and the first mounting block 4 in the inward adjustment process, and influence the adjustment range.

Referring to fig. 2 and fig. 5-6, the conveying clamping mechanism comprises an L-shaped conveying plate 8 arranged at the top end of a moving plate 3, a mounting plate 9 is fixedly arranged in the middle of the L-shaped conveying plate 8, a plurality of rollers 10 are rotatably connected to the mounting plate 9 and the L-shaped conveying plate 8, a gear 11 is fixedly arranged at one end of the roller 10, which is close to the mounting plate 9, and meshed with a chain 12, wherein a driven pulley 13 is fixedly arranged on the roller 10 positioned at the front end of the mounting plate 9, a driving pulley 14 is arranged below the driven pulley 13, the driven pulley 13 is connected with the driving pulley 14 through a transmission belt, a rotating shaft 15 is arranged in the middle of the driving pulley 14, one end of the rotating shaft 15 is rotatably connected with the mounting plate 9, and the other end of the rotating shaft 15 is connected with a driving motor 16.

Referring to fig. 5-6, the conveying clamping mechanism further comprises a third mounting block 17 arranged on the outer side of the first electric sliding rail 2, a first compression spring 18 is fixedly arranged in the third mounting block 17, a moving block 19 is fixedly arranged at the other end of the first compression spring 18, the moving block 19 is in sliding clamping connection with the inside of the third mounting block 17, a second rotating shaft 20 is fixedly arranged on the moving block 19, an adjusting belt pulley 21 is fixedly arranged at the end part of the second rotating shaft 20, a first transmission bevel gear 22 is fixedly arranged at a section of the first rotating shaft 15 between the first driving belt pulley 14 and the mounting plate 9, a second transmission bevel gear 23 is meshed on the first transmission bevel gear 22, a third rotating shaft is fixedly arranged at the middle part of the second transmission bevel gear 23, a first connecting block 25 which is in three-phase matching with the rotating shaft is arranged on the L-shaped conveying plate 8, one end, close to the outer side, of the third rotating shaft penetrates through the first connecting block 25, is respectively connected with a second driving belt pulley 26 and a second driven belt pulley 27, and the second driving belt pulley 26 and the second driven belt pulley 27 are connected with the adjusting belt 21; on the other hand, due to the design of the moving block 19, the first compression spring 18 and the adjusting belt pulley 21, when a worker needs to adjust the position of the L-shaped conveying plate 8, the driving belt pulley II 26, the second driven belt pulley 27 and the driving belt on the adjusting belt pulley 21 can be always clung to the outer surfaces of the driving belt pulley II 26, the second driven belt pulley 27 and the adjusting belt pulley 21 under the action of the first compression spring 18, so that the normal operation of the conveying clamping mechanism is ensured;

When the steel sheet is conveyed, the driving motor 16 is started, the output end of the driving motor 16 drives the driving belt pulley I14 to rotate through the rotating shaft I15, and drives the driven belt pulley I13 to rotate through the transmission belt, so that the gear 11 at the front end of the mounting plate 9 is driven to rotate, the motion is transmitted through the chain wheel to enable the roller 10 to roll, the driving bevel gear 11 on the rotating shaft I15 drives the driving bevel gear 11 II to rotate while the rotating shaft I15 rotates, the rotating shaft III fixedly arranged on the driving bevel gear 11 II drives the driving belt pulley II 26 to rotate, and drives the driven belt pulley II 27 to rotate through the transmission belt, and the transmission of power of the driving motor 16 is realized through the driving bevel gear 11I and the driving bevel gear 11 II on the other L-shaped conveying plate 8, so that the roller 10 on the two L-shaped conveying plates 8 can be driven to roll through one driving motor 16.

It should be noted that, in this embodiment, the second driving pulley 26, the second driven pulley 27 and the adjusting pulley 21 are located in the same plane, and the outer surfaces of the second driving pulley 26, the second driven pulley 27 and the adjusting pulley 21 are all in a groove-shaped design with convex ends and concave middle parts, so that the driving belt is prevented from falling off in the adjusting process of the L-shaped conveying plate 8, the normal use of the device is affected, and the running stability of the device is improved.

Referring to fig. 2-4, a plurality of mounting blocks four 28 are fixedly arranged at the top ends of mounting plates 9, a plurality of compression springs two 29 are fixedly arranged in the mounting blocks four 28, a clamping plate 30 is fixedly connected to the other ends of the compression springs two 29, a plurality of first rollers 31 are arranged at the ends of the clamping plate 30, which are in contact with the steel sheet, guide blocks 32 are arranged at the bottoms of the two ends of the clamping plate 30, a plurality of first guide plates 33 matched with the guide blocks 32 are fixedly arranged on the mounting plates 9 and the L-shaped conveying plates, protruding blocks 34 are arranged at the two sides of the top ends of the clamping plate 30, a second guide plate 35 for guiding the steel sheet during conveying is fixedly arranged at the opposite ends of the two mounting plates 9, and the second guide plates 35 are sleeved on a roller 10. On the other hand, through the design of deflector two 35 for the steel sheet is in the middle part of two L type transport plates gradually in the in-process of transporting on cylinder 10 for the steel sheet is laminated mutually with the gyro wheel one 31 on the grip block 30 in the in-process of transporting forward, guarantees the normal operation of device.

Referring to fig. 3, an electric sliding rail two 36 is arranged at one end of the l-shaped transportation plate, which is close to the outer side, an installation block five 37 is arranged on the electric sliding rail two 36 in a sliding manner, a hydraulic cylinder two 38 is fixedly arranged on the installation block five 37, a connection block two 39 is fixedly arranged at the output end of the hydraulic cylinder two 38, and a pre-pressing cutter 40 is fixedly arranged at the bottom end of the connection block two 39.

It should be noted that, in this embodiment, when the pre-pressing knife 40 is not in use, the inner side wall of the pre-pressing knife is attached to the bump 34 on the clamping plate 30, so as to form a clamping connection with the clamping plate 30, so that the clamping plate 30 can still be kept in the same horizontal plane with the second guide plate 35 when not clamping the steel sheet, and normal conveying of the steel sheet on the roller 10 is ensured; on the other hand, after the steel sheet is bent, the second electric sliding rail 36 is matched with the second hydraulic cylinder 38 to drive the pre-pressing cutter 40 to move towards the clamping plate 30, so that the side wall of the pre-pressing cutter 40 is attached to the protruding block 34, and the second hydraulic cylinder 38 drives the clamping plate 30 to shrink inwards, so that the clamping plate 30 is reset.

Example two

According to the embodiment, the steel sheet is further optimized on the basis of the first embodiment, when the steel sheet is bent, the middle part of the bottom surface of the steel sheet is found to generate certain deformation when being pressed, so that when the metal plate is completely bent and formed, a certain radian is generated in the middle part of the bottom surface of the metal plate, the allowance is difficult to extend out from two sides of the metal plate, the flatness of the bottom of the formed metal wire slot is low, and the forming quality of the metal wire slot is affected.

Referring to fig. 7, a bearing assembly for bearing the steel sheet during bending is arranged in the first mounting block 4, the bearing assembly comprises a limiting block 43, a plurality of mounting holes 41 are formed in the first mounting block 4, a plurality of compression springs three 42 are fixedly arranged in the mounting holes 41, the other ends of the compression springs three 42 are fixedly connected with the limiting block 43, connecting rods 44 are fixedly arranged at the other ends of the limiting block 43, and bearing blocks 45 are arranged at the top ends of the connecting rods 44.

It should be noted that, in this embodiment, under the action of the elastic force of the second compression spring 29, when the supporting block 45 is at the maximum height, the top end of the supporting block 45 and the top end of the L-shaped conveying plate 8 are in the same horizontal plane, so as to ensure the normal transportation of the steel sheet on the roller 10; on the other hand, a slot can be formed in the outer side of the top end of the first mounting block 4, so that when a worker needs to adjust the position of the L-shaped conveying plate 8, the worker can press a cover plate with an elastic pull rod 52 on the bearing block 45 to enable the third compression spring 42 to shrink inwards and drive the bearing block 45 to retract into the first mounting block 4, and after the position adjustment of the L-shaped conveying plate 8 is completed, the cover plate is pulled out along the slot.

Referring to fig. 8, a mounting groove 46 is symmetrically formed in the second mounting block 6, a compression spring four 47 is fixedly arranged in the mounting groove 46, a connecting plate 48 is fixedly arranged at the other end of the compression spring four 47, a plugging rod 49 is fixedly arranged on the connecting plate 48, a plurality of rollers two 50 are arranged at the front end of the plugging rod 49, a plugging hole 51 matched with the plugging rod 49 is formed in the second mounting block 6 and the forming press block 7, a pull rod 52 is fixedly arranged in the middle of the top end of the connecting plate 48, an opening communicated with the mounting groove 46 and matched with the pull rod 52 is formed in the top end of the second mounting block 6, and specifically, in the utility model, the forming press block 7 on the second mounting block 6 is clamped and fixed through the design of the compression spring four 47, the connecting plate 48, the plugging rod 49 and the pull rod 52, so that the traditional bolt connection fixing mode is abandoned while the fixing stability of the forming press block 7 is ensured, and the workload of workers in changing the forming press block 7 is reduced.

When the size of the steel sheet changes and needs to be changed for the forming press block 7, a worker grasps the pull rod 52 inwards to enable the inserting rod 49 to shrink inwards and separate from the inserting hole 51, at the moment, the forming press block 7 can be taken out, the forming press block 7 to be changed slides inwards along the second mounting block 6, at the moment, the second roller 50 at the end part of the inserting rod 49 rolls on the outer surface of the forming press block 7, and when the second roller is parallel to the inserting hole 51, the second roller is inserted into the inserting hole 51 under the action of the fourth compression spring 47, and the change of the forming press block 7 is realized.

It should be noted that, in the present embodiment, the plugging rod 49 may be tapered with a narrow front and a wide rear, so as to improve the stability of the plugging rod 49 when plugging into the plugging hole 51.

The steel sheet bending device provided by the utility model has the following use process:

When the steel sheet is required to be conveyed, the driving motor 16 is started, so that the rollers 10 on the two L-shaped conveying plates 8 can be driven to roll, and the steel sheet is conveyed;

When bending the steel sheet, the bending part of the steel sheet is pre-bent by starting the electric sliding rail I2 and the hydraulic cylinder II 38, and the forming press block 7 is driven to extrude downwards by starting the hydraulic cylinder I5, so that the steel sheet can be bent;

When the position of the L-shaped conveying plate 8 needs to be adjusted, a cover plate with an elastic pull rod 52 is pressed on the bearing block 45, so that the bearing block 45 is retracted into the first mounting block 4, and the electric slide rail 2 is started at the moment, so that the position of the L-shaped conveying plate 8 can be adjusted;

When the clamping plate 30 needs to be reset, the second electric sliding rail 36 is matched with the second hydraulic cylinder 38 to drive the pre-pressing cutter 40 to move towards the clamping plate 30, so that the side wall of the pre-pressing cutter 40 is attached to the convex block 34, and the second hydraulic cylinder 38 drives the clamping plate 30 to retract inwards, so that the clamping plate 30 is reset;

When the formed pressing plate needs to be replaced, the pull rod 52 is held inwards, so that the inserting rod 49 is contracted inwards and separated from the inserting hole 51, the formed pressing block 7 can be taken out at the moment, the formed pressing block 7 needing to be replaced slides inwards along the second mounting block 6, and when the inserting rod 49 is parallel to the inserting hole 51, the inserting rod 49 is inserted into the inserting hole 51 under the action of the fourth compression spring 47, and replacement of the formed pressing block 7 is realized.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims (7)

1. The utility model provides a steel sheet bending device, includes U template (1), electronic slide rail one (2), movable plate (3) and installation piece one (4), movable plate (3) be equipped with two and with electronic slide rail one (2) sliding connection, installation piece one (4) locate two in the middle of movable plate (3), a serial communication port, the top of U template (1) has set firmly pneumatic cylinder one (5), the output of pneumatic cylinder one (5) has set firmly installation piece two (6), the bottom of installation piece two (6) is equipped with shaping briquetting (7) of bending the steel sheet, be equipped with on movable plate (3) to steel sheet transportation and the transport fixture of centre gripping.

2. The steel sheet bending device according to claim 1, wherein the conveying clamping mechanism comprises an L-shaped conveying plate (8) arranged at the top end of the moving plate (3), a mounting plate (9) is fixedly arranged in the middle of the L-shaped conveying plate (8), a plurality of rollers (10) are rotatably connected to the mounting plate (9) and are rotatably connected to the middle of the L-shaped conveying plate (8), one end, close to the mounting plate (9), of each roller (10) penetrates through the mounting plate (9) and is fixedly provided with a gear (11), the gears (11) are meshed with a chain (12), driven pulleys (13) are fixedly arranged on the rollers (10) arranged at the front end of the mounting plate (9), driving pulleys (14) are arranged below the driven pulleys (13), the driven pulleys (13) are connected with the driving pulleys (14) through a transmission belt, a rotating shaft (15) is arranged in the middle of the driving pulleys (14), one end of each rotating shaft (15) is rotatably connected with the mounting plate (9), and the other end of each rotating shaft (15) is connected with a driving shaft (16) of a motor.

3. The steel sheet bending device according to claim 2, wherein the conveying clamping mechanism further comprises a third mounting block (17) arranged on the outer side of the first electric sliding rail (2), a first compression spring (18) is fixedly arranged in the third mounting block (17), a moving block (19) is fixedly arranged at the other end of the first compression spring (18), the moving block (19) is slidably clamped in the third mounting block (17), a second rotating shaft (20) is fixedly arranged on the moving block (19), an adjusting belt wheel (21) is fixedly arranged at the end part of the second rotating shaft (20), a first transmission bevel gear (22) is fixedly arranged at one section of the first rotating shaft (15) between the first driving belt wheel (14) and the mounting plate (9), a second transmission bevel gear (23) is meshed on the first transmission bevel gear (22), a third rotating shaft (25) is fixedly arranged in the middle of the second transmission bevel gear (23), a first connecting block (25) matched with the three phases of the rotating shaft is arranged on the L-shaped conveying plate (8), one end of the third outer side penetrates through the first rotating shaft (25) and is respectively connected with the second driving belt wheel (26) and the second driving belt wheel (27) and the second driven belt (27) and the second driving belt (27) through the connecting block.

4. The steel sheet bending device according to claim 2, wherein a plurality of installation blocks IV (28) are fixedly arranged at the top end of the installation plate (9), a plurality of compression springs II (29) are fixedly arranged in the installation blocks IV (28), a clamping plate (30) is fixedly connected to the other end of the compression springs II (29), a plurality of rollers I (31) are arranged at one end of the clamping plate (30) which is abutted against the steel sheet, guide blocks (32) are arranged at the bottoms of the two ends of the clamping plate (30), a plurality of guide plates I (33) matched with the guide blocks (32) are fixedly arranged on the installation plate (9) and the L-shaped transportation plate, bumps (34) are arranged at two sides of the top end of the clamping plate (30), which is opposite to the installation plate (9), of the two guide plates II (35) which are fixedly arranged at one end of the clamping plate (9) which is opposite to the guide steel sheet during conveying, and the guide plates II (35) are sleeved on the roller (10).

5. The steel sheet bending device according to claim 4, wherein an electric sliding rail II (36) is arranged at one end, close to the outer side, of the L-shaped conveying plate, an installation block V (37) is arranged on the electric sliding rail II (36) in a sliding mode, a hydraulic cylinder II (38) is fixedly arranged on the installation block V (37), a connecting block II (39) is fixedly arranged at the output end of the hydraulic cylinder II (38), and a pre-pressing cutter (40) is fixedly arranged at the bottom end of the connecting block II (39).

6. The steel sheet bending device according to claim 1, wherein a supporting component for supporting the steel sheet during bending is arranged in the first mounting block (4), the supporting component comprises a limiting block (43), a plurality of mounting holes (41) are formed in the first mounting block (4), a plurality of compression springs (42) are fixedly arranged in the mounting holes (41), the other ends of the compression springs (42) are fixedly connected with the limiting block (43), a connecting rod (44) is fixedly arranged at the other ends of the limiting block (43), and a supporting block (45) is arranged at the top end of the connecting rod (44).

7. The steel sheet bending device according to claim 1, wherein the installation groove (46) is symmetrically arranged in the installation block II (6), a compression spring IV (47) is fixedly arranged in the installation groove (46), a connecting plate (48) is fixedly arranged at the other end of the compression spring IV (47), a plug rod (49) is fixedly arranged on the connecting plate (48), a plurality of rolling wheels II (50) are arranged at the front end of the plug rod (49), plug holes (51) matched with the plug rod (49) are formed in the installation block II (6) and the forming press block (7), a pull rod (52) is fixedly arranged in the middle of the top end of the connecting plate (48), and an opening (53) which is communicated with the installation groove (46) and is matched with the pull rod (52) is formed in the top end of the installation block II (6).