Bending device for metal hollow plate production

Abstract

The invention discloses a bending device for metal hollow plate production, and relates to the technical field of metal processing, the bending device comprises two U-shaped frame plates, a base is fixedly mounted at the lower ends of the two U-shaped frame plates, two bearing sets are arranged between the two U-shaped frame plates, a rotating column is arranged between the two U-shaped frame plates, and two movable triangular blocks are arranged in the base. And lifting rods are slidably installed at the lower ends of the two U-shaped frame plates in a penetrating mode, the two lifting rods are located at the separated ends of the two movable triangular blocks correspondingly, and a water tank is arranged between the two lifting rods. According to the hollow slab bending device, the distance between the two bearing sets and the rotating column can be adjusted according to the bending degree of a hollow slab, then the hollow slab can be bent to different degrees, operation is very simple and not complex, diversified product requirements are met, and operation is convenient and fast.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing, in particular to a bending device for producing metal hollow plates. Background Art

[0002] In the manufacture of sports equipment, hollow carbon steel plates are usually used. They have the characteristics of high strength and hardness, can withstand greater pressure and impact, are relatively low in price, are more economical in cost, have good machinability, and are easy to cut, weld, bend and other processing operations; The current bending device has been found to have at least the following technical problems: First, the previous bending devices used in the production of metal hollow plates lacked effective surface cleaning measures before bending the metal hollow plates, which may cause dust to be embedded in the surface of the metal hollow plates, affecting the appearance and quality of the products.

[0003] Second, in previous devices, the rotation and bending operations of the hollow plate are usually driven by multiple independent power sources, resulting in waste of power sources, increased equipment costs and energy consumption. The various operating links are independent of each other and lack effective integration, making the entire processing process inefficient.

[0004] Third, the existing bending device is cumbersome and complicated to operate when adjusting the bending degree of the hollow plate, which is inconvenient for the staff to operate and control.

[0005] Fourth, the previous bending devices were not ideal in cooling the metal hollow plate after bending, and could not effectively maintain the shape after bending, reduce springback, or eliminate residual stress, which affected the mechanical properties and bending accuracy of the metal hollow plate. At the same time, the use of water resources was not reasonable enough, and there was a lack of recycling mechanism. Summary of the invention

[0006] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a bending device for producing metal hollow plates to solve the above-mentioned technical problems.

[0007] (II) Technical solution To achieve the above objectives, the present invention is implemented through the following technical solutions: The cam is provided with a plurality of U-shaped bearings, each of which is provided with a plurality of movable triangular blocks, and the plurality of movable triangular blocks are provided with a plurality of movable triangular blocks.

[0008] Preferably: two fixed shafts are fixedly installed between the two U-shaped frame plates, two groups of bearing groups are respectively installed through the circumferential surfaces of the two fixed shafts, two cleaning plates are provided between the two U-shaped frame plates, a cleaning cloth is provided between the two cleaning plates, a water baffle is fixedly installed between the two U-shaped frame plates, a bidirectional screw is rotatably installed through the base, and a limiting ring is fixedly installed on the bidirectional screw.

[0009] Preferably: a fixing plate is fixedly installed at the bottom of the inner wall of the base, a limiting hole is opened at the side end of the fixing plate, the bidirectional screw and the limiting ring are rotatably installed in the limiting hole opened in the fixing plate, the two movable triangular blocks are respectively connected to the two side ends of the bidirectional screw by threads, and the left side of the bidirectional screw is a left-handed thread, and the right side is a right-handed thread, the adjacent ends of the two lifting rods are fixedly installed with connecting blocks, and the water tank is fixedly installed between the two connecting blocks.

[0010] Preferably: two guide rods are fixedly installed in the U-shaped frame plate, the adjustment block is slidably installed on the circumferential surface of the two guide rods, a servo motor is fixedly installed on the adjustment block at the front end, and the servo motor is fixedly connected to the rotating shaft through the output shaft.

[0011] Preferably: a fixing block is fixedly installed on the U-shaped frame plate at the front end, an adjusting screw is installed on the fixing block through a thread, the lower end of the adjusting screw is in contact with the mounting belt, a water pipe is provided at the lower end of the pumping assembly, the lower end of the water pipe is arranged inside the water tank, and a water spray head is provided at the lower end of the pumping assembly.

[0012] (III) Beneficial effects One: The present invention arranges a cleaning roller brush and a water pumping assembly between two U-shaped frame plates, so that the device can clean the surface of the hollow plate when bending the hollow plate, thereby preventing dust from being embedded in the surface of the metal hollow plate during the bending process and affecting the appearance of the product, thereby effectively improving the quality of the hollow plate after bending. By using a cleaning plate arranged between the two U-shaped frame plates and a cleaning cloth inside the cleaning plate, the hollow plate can be wiped clean for a second time, and the fine dust on the plate can be cleaned, thereby further improving the bending quality of the hollow plate.

[0013] Second: The present invention allows the hollow plate coming out from between the two sets of bearing groups and the rotating column to move downward, and the hollow plate will enter the interior of the water tank, and cold water will be placed in the water tank in advance to quickly cool the hollow plate, thereby helping to maintain the shape after bending, reduce springback, and improve the stability and accuracy of the bending shape. In addition, rapid cooling can eliminate the residual stress generated in the bending process to a certain extent, making the internal structure of the hollow plate more stable and enhancing its mechanical properties.

[0014] 3: The present invention fixes the water tank between two lifting rods, and the water tank moves up and down with the lifting rods. When the bending degree of the hollow plate is small, the distance between the water tank and the hollow plate will become larger, and when the bending degree of the hollow plate is large, the water tank will also move upward, so that the internal space of the water tank can adapt to the bending degree of the steel plate.

[0015] Fourth: The pumping assembly in the present invention is connected to the cold water inside the water tank through a water pipe, so that the cold water inside the water tank can be used to clean the hollow plate, and the cleaned water flow will fall into the water tank, thereby completing the recycling of water resources.

[0016] Five: The present invention provides two adjustable adjustment blocks and a rotating column, so that the device can adjust the distance between the two bearing groups and the rotating column according to the degree of bending required for the hollow plate, thereby satisfying the different degrees of bending of the hollow plate, and the operation is very simple and uncomplicated, which not only meets the diversified product needs but also is convenient to operate.

[0017] Six: The present invention connects the rotation of the servo motor with the special-shaped double wheels through a pulley, so that the hollow plate can be cleaned, rotated and bent at the same time, which not only saves the power source but also greatly improves the bending efficiency of the hollow plate. At the same time, the fixed block and the adjusting screw arranged on the U-shaped frame plate can always ensure the tightness of the installed belt, thereby ensuring that the special-shaped double wheels and the pulley in the device can always rotate stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0019] Figure 1 It is a structural diagram of the present invention as a whole; Figure 2 It is a structural diagram of the base of the present invention; Figure 3 It is a structural diagram of the bidirectional screw of the present invention; Figure 4 It is a structural diagram of the U-shaped frame plate of the present invention; Figure 5 is a structural diagram of the bearing assembly of the present invention; Figure 6 It is a structural diagram of the rotating column of the present invention; Figure 7 It is a structural diagram of the pumping assembly of the present invention; Figure 8 For the present invention Figure 4 A magnified view of the structure at A.

[0020] Legend: 11. Bidirectional screw; 12. Limiting ring; 13. Fixed plate; 14. Limiting hole; 15. Moving triangle block; 16. Guide rod; 21. Base; 22. Connecting block; 23. Lifting rod; 24. Water tank; 25. Adjusting block; 31. Servo motor; 32. Rotating shaft; 33. Pulley; 34. Mounting belt; 35. Rotating column; 41. U-shaped frame; 42. Fixed block; 43. Adjusting screw; 44. Pumping assembly; 45. Water pipe; 46. Fixed shaft; 47. Bearing assembly; 48. Cleaning plate; 49. Water retaining plate; 51. Cleaning roller brush; 53. Special-shaped double wheels; 54. Flat gear. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0022] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, in view of the problems existing in the prior art, the present invention provides a bending device for producing a metal hollow plate, comprising two U-shaped frame plates 41, a base 21 is fixedly installed at the lower ends of the two U-shaped frame plates 41, two sets of bearing groups 47 are arranged between the two U-shaped frame plates 41, a rotating column 35 is arranged between the two U-shaped frame plates 41, two movable triangular blocks 15 are arranged in the base 21, and lifting rods 23 are slidably installed through the lower ends of the two U-shaped frame plates 41, and the two lifting rods 23 are respectively located at the separated ends of the two movable triangular blocks 15, a water tank 24 is arranged between the two lifting rods 23, and an adjusting block 25 is fixedly installed on the upper ends of the two lifting rods 23, and a rotating column 35 is arranged between the two adjusting blocks 25. A rotating shaft 32 is rotatably installed, and the rotating shaft 32 is inserted and installed in the rotating column 35. A pulley 33 is fixedly installed on the circumferential surface of the rotating shaft 32. Two cleaning roller brushes 51 are rotatably arranged between the two U-shaped frame plates 41. A special-shaped double wheel 53 is fixedly installed on the side end of the cleaning roller brush 51 at the lower end, and a flat gear 54 is fixedly installed on the side end of the cleaning roller brush 51 at the upper end. The flat gear 54 is meshed with the special-shaped double wheel 53, and a mounting belt 34 is meshed between the special-shaped double wheel 53 and the pulley 33. A pumping assembly 44 is fixedly installed on the upper end of the two U-shaped frame plates 41. When producing sports equipment, it is often necessary to firstly install a metal hollow plate (among which carbon hollow plates are more commonly used, and The carbon hollow plate has good machinability and is easy to be processed by cutting, welding and bending. When the carbon hollow plate (hereinafter referred to as the hollow plate) is bent, the user inserts the hollow plate between the two cleaning roller brushes 51. Before insertion, the user can turn on the water pump in the water pumping component 44 to pump water inside the water tank 24 through the water pipe 45, and then spray water to clean the hollow plate through the nozzle at its lower end. Then the user controls the servo motor 31 to work, and the servo motor 31 drives the pulley 33 to rotate through the output shaft, and the pulley 33 and the special-shaped double wheel 53 (welded by a flat gear and a pulley) The special-shaped double wheels 53 are meshed with each other through the installation belt 34, so the special-shaped double wheels 53 will also rotate. At this time, the special-shaped double wheels 53 are meshed with the flat gear 54, so that the two cleaning roller brushes 51 can rotate. When the cleaning roller brush 51 rotates, the hollow plate can be cleaned, and the larger impurities and dust on the upper end thereof can be cleaned. The present invention arranges the cleaning roller brush 51 and the pumping assembly 44 between the two U-shaped frame plates 41, so that the device can clean the surface of the hollow plate when bending the hollow plate, thereby preventing dust from being embedded in the surface of the metal hollow plate during the bending process and affecting the appearance of the product, thereby effectively improving the quality of the hollow plate after bending.

[0023] Two fixed shafts 46 are fixedly installed between the two U-shaped frame plates 41, and two groups of bearing groups 47 are respectively installed on the circumferential surfaces of the two fixed shafts 46. Two cleaning plates 48 are provided between the two U-shaped frame plates 41, and a cleaning cloth is placed between the two cleaning plates 48. A water retaining plate 49 is fixedly installed between the two U-shaped frame plates 41. A bidirectional screw 11 is rotatably installed in the base 21, and a limiting ring 12 is fixedly installed on the bidirectional screw 11. When the hollow plate is between the rotating column 35 and the two groups of bearing groups 47, the servo motor 31 is stopped, and the user rotates the bidirectional screw 11, and the bidirectional screw 11 is limited to rotate in the limiting hole 14 opened in the fixed plate 13 by the limiting ring 12, so it will not move. At this time, the thread direction of the bidirectional screw 11 is The two movable triangular blocks 15 are different, so that they can drive the two movable triangular blocks 15 to move in opposite directions. Since the separated ends of the two movable triangular blocks 15 are inclined surfaces, the two movable triangular blocks 15 will squeeze the two connecting blocks 22. At this time, the two connecting blocks 22 will rise upward under the action of squeezing, and the two lifting rods 23 will drive the two adjusting blocks 25 to move upward, and the rotating shaft 32 and the rotating column 35 connected to the two adjusting blocks 25 will also move upward. The present invention provides two adjustable adjusting blocks 25 and the rotating column 35, so that the device can adjust the distance between the two sets of bearing groups 47 and the rotating column 35 according to the degree to which the hollow plate needs to be bent, thereby satisfying the hollow plate that can be bent to different degrees and meeting the needs of diversified products.

[0024] A fixing plate 13 is fixedly installed at the bottom of the inner wall of the base 21, and a limiting hole 14 is provided at the side end of the fixing plate 13. The bidirectional screw 11 and the limiting ring 12 are rotatably installed in the limiting hole 14 provided on the fixing plate 13. The two movable triangular blocks 15 are respectively connected to the two side ends of the bidirectional screw 11 by threads, and the left side of the bidirectional screw 11 is a left-handed thread, and the right side is a right-handed thread. The adjacent ends of the two lifting rods 23 are fixedly installed with connecting blocks 22, and the water tank 24 is fixedly installed between the two connecting blocks 22. When the rotating shaft 32 and the rotating column 35 move up, the adjusting block 25 at its side end and the servo motor 31 will also move up. When the rotating column 35 is completely in contact with the hollow plate and the rotating column 35 is rotated to squeeze the hollow plate upward to a certain extent through the rotation of the bidirectional screw 11, the user can turn on the servo motor 31 again to make it work. At this time, the rotating column 35 will rotate with the servo motor 31, and the rotating column 35 will rotate with the hollow plate through the rotation of the bidirectional screw 11. The friction of the plate will drive the hollow plate to move, and the hollow plate will bend during the movement. When the pulley 33 and the mounting belt 34 move up, the mounting belt 34 will become loose, and the fixing block 42 and the adjusting screw 43 arranged on the U-shaped frame plate 41 can squeeze the mounting belt 34 so that the mounting belt 34 can still be in a tight state. At this time, the two cleaning roller brushes 51 on the device will still rotate and clean the hollow plate at the same time. The present invention connects the rotation of the servo motor 31 with the special-shaped double wheels 53 through the pulley 33, so that the hollow plate can be cleaned and rotated and bent at the same time, which not only saves the power source, but also greatly improves the bending efficiency of the hollow plate. At the same time, the fixing block 42 and the adjusting screw 43 arranged on the U-shaped frame plate 41 can always ensure the tightness of the mounting belt 34, thereby ensuring that the special-shaped double wheels 53 and the pulley 33 in the device can always rotate stably.

[0025] Two guide rods 16 are fixedly installed in the U-shaped frame plate 41, and the adjustment block 25 is slidably installed on the circumferential surface of the two guide rods 16. A servo motor 31 is fixedly installed on the adjustment block 25 at the front end, and the servo motor 31 is fixedly connected to the rotating shaft 32 through the output shaft. After the hollow plate is initially cleaned by the two cleaning roller brushes 51, it will pass through two cleaning plates 48. At this time, a cleaning cloth is provided between the two cleaning plates 48. At this time, the cleaning cloth will perform a secondary cleaning on the hollow plate, not only cleaning the water stains on the hollow plate, but also cleaning the fine dust thereon, thereby improving the bending quality of the hollow plate. The present invention can wipe the hollow plate twice and clean the fine dust thereon by using the cleaning plate 48 provided between the two U-shaped frame plates 41 and the cleaning cloth therein, thereby further improving the bending quality of the hollow plate.

[0026] A fixing block 42 is fixedly installed on the U-shaped frame plate 41 at the front end, and an adjusting screw 43 is installed on the fixing block 42 through a thread. The lower end of the adjusting screw 43 is in contact with the mounting belt 34. A water pipe 45 is provided at the lower end of the water pumping component 44. The lower end of the water pipe 45 is arranged inside the water tank 24. A water spray head is provided at the lower end of the water pumping component 44. The present invention allows the hollow plate coming out from between the two groups of bearing groups 47 and the rotating column 35 to move downward, and the hollow plate will enter the inside of the water tank 24. Cold water will be placed in advance inside the water tank 24 to quickly cool the hollow plate, thereby helping to maintain the shape after bending, reduce rebound, and improve the stability and accuracy of the bending shape. In addition, rapid cooling can eliminate the bending process to a certain extent. The residual stress generated in the hollow plate makes the internal structure of the hollow plate more stable and enhances its mechanical properties. The present invention fixes the water tank 24 between the two lifting rods 23, and the water tank 24 moves up and down with the lifting rods 23. When the bending degree of the hollow plate is small, the distance between the water tank 24 and the hollow plate will become larger, and when the bending degree of the hollow plate is large, the water tank 24 will also move upward, so that the internal space of the water tank 24 can adapt to the bending degree of the steel plate. The pumping component 44 in the present invention is connected to the cold water inside the water tank 24 through the water pipe 45, so that the cold water inside the water tank 24 can be used to clean the hollow plate, and the cleaned water flow will fall into the water tank 24, thereby completing the recycling of water resources.

[0027] Working principle: In the first step, when producing sports equipment, it is often necessary to first process the metal hollow plate (among which carbon hollow plates are more commonly used, and carbon hollow plates have good machinability and are easy to cut, weld, bend and other processing operations). When bending the carbon hollow plate (hereinafter referred to as the hollow plate), the user inserts the hollow plate between the two cleaning roller brushes 51. Before insertion, the user can turn on the water pump in the pumping assembly 44 to pump water inside the water tank 24 through the water pipe 45, and spray water to clean the hollow plate through the nozzle at its lower end. The user controls the servo motor 31 to work, and the servo motor 31 drives the pulley 33 to rotate through the output shaft, and the pulley 33 and the special-shaped double wheel 53 The special-shaped double wheels 53 will also rotate because the special-shaped double wheels 53 and the flat gear 54 are meshed with each other. When the cleaning roller brushes 51 rotate, the hollow plate can be cleaned, and the larger impurities and dust on the upper end can be cleaned. The cleaning roller brushes 51 and the pumping assembly 44 are arranged between the two U-shaped frame plates 41, so that the surface of the hollow plate can be cleaned when the device is bending the hollow plate, so as to avoid dust being embedded in the surface of the metal hollow plate during the bending process, affecting the appearance of the product, and effectively improving the quality of the hollow plate after bending.

[0028] In the second step, when the hollow plate is between the rotating column 35 and the two groups of bearing groups 47, the servo motor 31 is stopped, and the user rotates the bidirectional screw 11, and the bidirectional screw 11 is limited and rotated in the limiting hole 14 opened in the fixed plate 13 by the limiting ring 12, so it will not move. At this time, the two moving triangular blocks 15 can be driven to move in opposite directions by the different thread directions on the bidirectional screw 11. Since the separated ends of the two moving triangular blocks 15 are both inclined surfaces, the two moving triangular blocks 15 will squeeze the two connecting blocks 22. At this time, the two connecting blocks 22 will rise upward under the action of squeezing, and the two lifting rods 23 will drive the two adjusting blocks 25 to move upward, and the rotating shaft 32 and the rotating column 35 connected to the two adjusting blocks 25 will also move upward. The present invention provides two adjustable adjusting blocks 25 and the rotating column 35, so that the device can adjust the distance between the two groups of bearing groups 47 and the rotating column 35 according to the degree of bending required by the hollow plate, thereby meeting the hollow plate. Can bend to different degrees and meet the needs of diversified products.

[0029] In the third step, when the rotating shaft 32 and the rotating column 35 move up, the adjusting block 25 and the servo motor 31 at the side end thereof will also move up. After the rotating column 35 is completely in contact with the hollow plate and the rotating column 35 is pressed upward against the hollow plate to a certain extent by the rotation of the bidirectional screw 11, the user can turn on the servo motor 31 again to make it work. At this time, the rotating column 35 will rotate with the servo motor 31, and the rotating column 35 will drive the hollow plate to move through the friction with the hollow plate. When moving, the hollow plate will bend. When the pulley 33 and the mounting belt 34 move up, the mounting belt 34 will become loose, and the fixing block 42 and the adjusting block 42 provided on the U-shaped frame plate 41 will be loosened. The section screw 43 can squeeze the installation belt 34 so that the installation belt 34 can still be in a tight state. At this time, the two cleaning roller brushes 51 on the device will still rotate and clean the hollow plate at the same time. The present invention connects the rotation of the servo motor 31 with the special-shaped double wheels 53 through the pulley 33, so that the hollow plate can be cleaned and rotated and bent at the same time, which not only saves power source but also greatly improves the bending efficiency of the hollow plate. At the same time, the fixing block 42 and the adjusting screw 43 arranged on the U-shaped frame plate 41 can always ensure the tightness of the installation belt 34, thereby ensuring that the special-shaped double wheels 53 and the pulley 33 in the device can always rotate stably.

[0030] In the fourth step, after the hollow plate is initially cleaned by the two cleaning roller brushes 51, it will pass through two cleaning plates 48. At this time, a cleaning cloth is provided between the two cleaning plates 48. At this time, the cleaning cloth will perform a secondary cleaning on the hollow plate, not only cleaning the water stains on the hollow plate, but also cleaning the fine dust thereon, thereby improving the bending quality of the hollow plate. The present invention can wipe the hollow plate twice and clean the fine dust thereon by providing the cleaning plate 48 between the two U-shaped frame plates 41 and the cleaning cloth therein, thereby further improving the bending quality of the hollow plate.

[0031] In the fifth step, the present invention allows the hollow plate between the two sets of bearing groups 47 and the rotating column 35 to move downward, and the hollow plate will enter the interior of the water tank 24, and cold water will be placed in the water tank 24 in advance to quickly cool the hollow plate, thereby helping to maintain the shape after bending, reduce rebound, and improve the stability and accuracy of the bending shape. In addition, rapid cooling can eliminate the residual stress generated during the bending process to a certain extent, making the internal structure of the hollow plate more stable and enhancing its mechanical properties. The present invention fixes the water tank 24 on the two lifting rods 23 The water tank 24 will move up and down with the lifting rod 23. When the bending degree of the hollow plate is small, the distance between the water tank 24 and the hollow plate will become larger. When the bending degree of the hollow plate is large, the water tank 24 will also move upward, so that the internal space of the water tank 24 can adapt to the bending degree of the steel plate. The pumping component 44 in the present invention is connected to the cold water inside the water tank 24 through the water pipe 45, so that the cold water inside the water tank 24 can be used to clean the hollow plate, and the cleaned water flow will fall into the water tank 24, thereby completing the recycling of water resources.

[0032] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A bending device for producing a metal hollow plate, comprising two U-shaped frame plates (41), characterized in that: A base (21) is fixedly mounted on the lower ends of the two U-shaped frames (41); two groups of bearing groups (47) are arranged between the two U-shaped frames (41); a rotating column (35) is arranged between the two U-shaped frames (41); two movable triangular blocks (15) are arranged in the base (21); lifting rods (23) are slidably mounted through the lower ends of the two U-shaped frames (41); the two lifting rods (23) are respectively located at the separated ends of the two movable triangular blocks (15); and a water tank (24) is arranged between the two lifting rods (23); The upper ends of the two lifting rods (23) are fixedly mounted with adjustment blocks (25); a rotating shaft (32) is rotatably mounted between the two adjustment blocks (25); the rotating shaft (32) is inserted into the rotating column (35); and a pulley (33) is fixedly mounted on the circumferential surface of the rotating shaft (32); Two cleaning roller brushes (51) are rotatably arranged between the two U-shaped frame plates (41); a special-shaped double wheel (53) is fixedly installed on the side end of the cleaning roller brush (51) at the lower end; a flat gear (54) is fixedly installed on the side end of the cleaning roller brush (51) at the upper end; the flat gear (54) is meshed with the special-shaped double wheel (53); a mounting belt (34) is meshed between the special-shaped double wheel (53) and the pulley (33); and a pumping assembly (44) is fixedly installed on the upper ends of the two U-shaped frame plates (41).

2. A bending device for producing a metal hollow plate according to claim 1, characterized in that: Two fixed shafts (46) are fixedly installed between the two U-shaped frame plates (41), and two groups of bearing groups (47) are respectively installed through the circumferential surfaces of the two fixed shafts (46); Two cleaning plates (48) are provided between the two U-shaped frame plates (41), and a cleaning cloth is provided between the two cleaning plates (48).

3. A bending device for producing a metal hollow plate according to claim 2, characterized in that: A water retaining plate (49) is fixedly installed between the two U-shaped frame plates (41); A bidirectional screw rod (11) is rotatably installed in the base (21), and a limiting ring (12) is fixedly installed on the bidirectional screw rod (11).

4. A bending device for producing a metal hollow plate according to claim 3, characterized in that: A fixing plate (13) is fixedly mounted on the bottom of the inner wall of the base (21), and a limiting hole (14) is provided at a side end of the fixing plate (13); The bidirectional screw (11) and the limiting ring (12) are rotatably mounted in a limiting hole (14) formed in the fixing plate (13).

5. A bending device for producing a metal hollow plate according to claim 4, characterized in that: The two movable triangular blocks (15) are respectively connected to the two side ends of the bidirectional screw (11) through threads, and the left side of the bidirectional screw (11) is a left-handed thread, and the right side is a right-handed thread.

6. A bending device for producing a metal hollow plate according to claim 5, characterized in that: Adjacent ends of the two lifting rods (23) are fixedly mounted with connecting blocks (22); Wherein, the water tank (24) is fixedly installed between the two connecting blocks (22).

7. A bending device for producing a metal hollow plate according to claim 6, characterized in that: Two guide rods (16) are fixedly mounted inside the U-shaped frame plate (41); The adjustment block (25) is slidably mounted on the circumferential surfaces of the two guide rods (16).

8. A bending device for producing a metal hollow plate according to claim 7, characterized in that: A servo motor (31) is fixedly mounted on the adjustment block (25) at the front end; Wherein, the servo motor (31) is fixedly connected to the rotating shaft (32) via an output shaft.

9. A bending device for producing a metal hollow plate according to claim 8, characterized in that: A fixing block (42) is fixedly mounted on the U-shaped frame plate (41) at the front end; The fixing block (42) is provided with an adjusting screw (43) threadedly therethrough, and the lower end of the adjusting screw (43) is in contact with the mounting belt (34).

10. A bending device for producing a metal hollow plate according to claim 9, characterized in that: A water pipe (45) is provided at the lower end of the water pumping assembly (44), and the lower end of the water pipe (45) is arranged inside the water tank (24); Wherein, a water spray head is provided at the lower end of the water pumping assembly (44).

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