Steel plate multi-angle bending device and bending method

Abstract

The invention discloses a steel plate multi-angle bending device which comprises a machining table, a vertical frame is fixedly installed on the top face of the machining table, a control panel and a machining assembly arranged below the control panel are fixedly installed on the top face of the vertical frame, and the machining assembly comprises a positioning assembly arranged above the machining table. A steel plate is placed on the top face of the machining table, in order to improve the bending effect, the bending portion of the steel plate needs to be accurately positioned and limited, deviation of the bending portion is avoided, at the moment, opposite threaded rods are rotated, and due to the fact that a limiting plate fixedly installed at the end of a push plate and the interior of a vertical frame are arranged in a sliding mode, the limiting plate is limited; the rotating opposite threaded rod drives the two sleeve blocks arranged on the outer wall of the opposite threaded rod in a sleeving mode to move reversely, due to the fact that the end of the connecting plate is hinged to the sleeve blocks and the top face of the push plate, the sleeve blocks push the push plate downwards through the connecting plate under limitation, the positioning plate fixedly installed at the bottom of the push plate presses the steel plate, and the pressing position of the positioning plate is the position needing to be bent.

Description

Technical Field

[0001] The invention relates to the technical field of steel plate bending, and in particular to a steel plate multi-angle bending device and a bending method. Background Art

[0002] A bending device is a device used to bend metal sheets or other materials. It usually includes a workbench, a fixing mechanism, a bending mechanism and other components, which can achieve precise bending of materials. Bending devices are widely used in machinery manufacturing, electronic equipment, architectural decoration and other industries. A steel plate multi-angle bending device is a device used to bend steel plates at different angles. This type of equipment is usually used in metal processing, machinery manufacturing and other industries, and can meet the production needs of different products.

[0003] For example, the steel plate multi-angle bending device and bending method disclosed in Chinese patent CN115007691B do not need to make different upper and lower top blocks, thereby saving metal materials. The user rotates the hand lever, and the hand lever drives the sealing column and the gas column to move, thereby adjusting the air pressure in the air pipe and the regulating arc tube. When the air pressure in the regulating arc tube is lower than the external atmospheric pressure, the atmospheric pressure can push the telescopic pin in the fixed angle hole back into the telescopic hole; when the air pressure in the regulating arc tube is higher than the external atmospheric pressure, the air pressure in the regulating arc tube pushes the telescopic pin to be reinserted into the fixed angle hole, thereby achieving locking and loosening between the pressure plate and the regulating arc tube in the above manner.

[0004] For this structure, although the bending angle of the steel plate can be adjusted, the device does not restrict the bending part of the steel plate, resulting in deviation of the bending part of the steel plate, affecting the use of the steel plate. Therefore, we propose a steel plate multi-angle bending device and bending method that can accurately position and restrict the bending part of the steel plate to avoid deviation of the bending part and improve the bending effect of the steel plate. Summary of the invention

[0005] The object of the present invention is to provide a steel plate multi-angle bending device and a bending method to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a multi-angle bending device for steel plates, comprising a processing table, a vertical frame fixedly installed on the top surface of the processing table, a control panel fixedly installed on the top surface of the vertical frame, and a processing component arranged below the control panel, the processing component comprising a positioning component arranged above the processing table, a pressing component arranged on the outside of the positioning component, and a bending component arranged on the side of the pressing component close to the positioning component.

[0007] Preferably, the positioning assembly includes opposing threaded rods rotatably connected to the inside of the stand, the outer walls of the opposing threaded rods are sleeved with sleeve blocks, the outer wall of the sleeve block is hinged with a connecting plate, the end of the connecting plate away from the sleeve block is hinged with a push plate, the end of the push plate is fixedly installed with a limit plate, the bottom of the push plate is slidably provided with a limit block, the side walls of the limit blocks are fixedly installed with springs, the outer wall of the limit block is fixedly installed with a centering plate, and the bottom of the push plate is fixedly installed with a positioning plate.

[0008] Preferably, the pressing assembly includes a fixed block fixedly mounted on the outer wall of the limiting plate, a first push rod fixedly mounted on the bottom of the fixed block, a first sealing ring fixedly mounted on the end of the first push rod away from the fixed block, an air pipe slidingly mounted on the outer wall of the first sealing ring, a second sealing ring slidingly mounted inside the air pipe, a second push rod fixedly mounted on the side wall of the second sealing ring, and a pressure plate fixedly mounted on the end of the second push rod away from the second sealing ring.

[0009] Preferably, the bending assembly includes a support plate fixedly mounted on the outer wall of the processing table, a motor is fixedly mounted on the top surface of the support plate, a rotating rod is fixedly mounted on the output end of the motor, a bending plate is fixedly mounted on the outer wall of the rotating rod, and a rubber pad is fixedly mounted on the outer wall of the bending plate.

[0010] Preferably, the outer wall of the centering plate is arranged in an inclined surface, and there are two centering plates, which are symmetrically distributed with respect to the center line of the push plate. Under the restriction of the centering plate, the steel plate can be clamped in a centering position.

[0011] Preferably, the outer wall of the limit plate is slidably arranged inside the stand, and the outer wall of the positioning plate is arranged at an inclined surface. Since the outer wall of the limit plate is slidably arranged inside the stand, under its restriction, the rotating opposite threaded rods drive the sleeve block mounted on its outer wall to move. Since the outer wall of the positioning plate is arranged at an inclined surface, the bending part can be accurately pressed to avoid crease deviation.

[0012] Preferably, the outer walls of the first sealing ring and the second sealing ring seal and slide with the inside of the trachea. There are two trachea, which are symmetrically distributed about the center line of the top surface of the processing table. Under its restriction, the first sealing ring sliding into the inside of the trachea can push the second sealing ring toward the outside of the trachea, so that the pressure plate presses the steel plate.

[0013] Preferably, the rubber pad is made of rubber material, and the rotating rod is rotatably connected to the inside of the processing table. Under the restriction of the rubber pad, scratches on the steel plate can be avoided.

[0014] A method for bending a steel plate at multiple angles, comprising the following steps: S1. When the steel plate needs to be bent, the steel plate is placed on the top surface of the processing table. In order to improve the bending effect, the bending part of the steel plate needs to be accurately positioned and restricted to avoid deviation in the bending part. At this time, the opposing threaded rods are rotated. Since the limit plate fixedly installed at the end of the push plate is slidably arranged inside the frame, under its restriction, the rotating opposing threaded rods drive the two sleeve blocks sleeved on its outer wall to move in opposite directions. Since the end of the connecting plate is hinged with the sleeve block and the top surface of the push plate, under its restriction, the sleeve block pushes the push plate downward through the connecting plate, so that the positioning plate fixedly installed at the bottom of the push plate presses the steel plate. The position pressed by the positioning plate is the required bending part. When the push plate moves downward, the outer wall inclined surface of the center plate contacts and squeezes the outer wall of the steel plate. Under the elastic action of the spring, the limit block is pushed, so that the limit block drives the center plate to move. The two center plates restrict the center of the steel plate. The steel plate can be accurately placed on the top surface of the processing table with the positioning plate, so that the bending is more accurate, so as to improve the bending effect. S2. When the steel plate is bent, the push plate pushes the positioning plate downward to position the bending part of the steel plate. At this time, the limit plate fixedly installed at its end moves downward accordingly, and the limit plate drives the fixed block fixedly installed on its outer wall to move downward. The fixed block drives the first push rod and the first sealing ring to slide toward the inside of the air pipe. Since the first sealing ring and the second sealing ring slide in a sealed manner with the inside of the air pipe, under its restriction, the first sealing ring pushes the gas inside the air pipe, so that the second sealing ring drives the second push rod to slide toward the outside of the air pipe, and the second push rod pushes the pressing plate accordingly, so that the pressing plate presses the steel plate on the top surface of the processing table, fixes the steel plate on the top surface of the processing table, and avoids the movement of the steel plate when it is bent, resulting in bending deviation; S3. When the steel plate is positioned and pressed on the top surface of the processing table, the motor is started at this time, and the rotating rod fixedly installed at its output end rotates accordingly, and the rotating rod drives the bending plate fixedly installed on its outer wall to rotate accordingly. The bending plate pushes the bottom of the steel plate to bend it. Under the restriction of the rubber pad, the bending plate can be prevented from rubbing and scratching the outer wall of the steel plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The multi-angle bending device of the steel plate is composed of a positioning component as one of its components. When the steel plate needs to be bent, the steel plate is placed on the top surface of the processing table. In order to improve the bending effect, the bending part of the steel plate needs to be accurately positioned and restricted to avoid deviation of the bending part. At this time, the opposing threaded rods are rotated. Since the limit plate fixedly installed at the end of the push plate is slidably arranged inside the frame, under its restriction, the rotating opposing threaded rods drive the two sleeve blocks sleeved on its outer wall to move in the opposite direction. Since the end of the connecting plate is hinged with the sleeve block and the top surface of the push plate, under its restriction, the sleeve block pushes the push plate downward through the connecting plate, so that the positioning plate fixedly installed at the bottom of the push plate presses the steel plate, and the position pressed by the positioning plate is the required bending part. When the push plate moves downward, the outer wall inclined surface of the center plate contacts and squeezes the outer wall of the steel plate. Under the elastic action of the spring, the limit block is pushed, so that the limit block drives the center plate to move, and the two center plates center the steel plate. The steel plate can be accurately placed on the top surface of the processing table with the positioning plate, so that the bending is more accurate, so as to improve the bending effect.

[0016] 2. The multi-angle bending device for steel plates is composed of a pressing assembly as one of its components. When the steel plate is bent, the push plate pushes the positioning plate downward to position the bending portion of the steel plate. At this time, the limit plate fixedly installed at its end moves downward accordingly, and the limit plate drives the fixed block fixedly installed on its outer wall to move downward. The fixed block drives the first push rod and the first sealing ring to slide toward the inside of the trachea. Since the first sealing ring and the second sealing ring slide in a sealed manner with the inside of the trachea, under its restriction, the first sealing ring pushes the gas inside the trachea, so that the second sealing ring drives the second push rod to slide toward the outside of the trachea, and the second push rod pushes the pressing plate accordingly, so that the pressing plate presses the steel plate on the top surface of the processing table and fixes the steel plate on the top surface of the processing table to prevent the steel plate from moving and causing bending deviation when it is bent.

[0017] 3. The multi-angle bending device for steel plates is composed of a bending assembly as one of its components. When the steel plate is positioned and pressed on the top surface of the processing table, the motor is started, and the rotating rod fixedly installed at its output end rotates accordingly. The rotating rod drives the bending plate fixedly installed on its outer wall to rotate accordingly, and the bending plate pushes the bottom of the steel plate to bend it. Under the restriction of the rubber pad, the bending plate can be prevented from rubbing and scratching the outer wall of the steel plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional appearance diagram of the structure of the present invention.

[0019] Figure 2 It is a three-dimensional cross-sectional view of the structure of the present invention.

[0020] Figure 3 This is a diagram of the structural positioning components of the present invention.

[0021] Figure 4 It is an exploded schematic diagram of the structural positioning assembly of the present invention.

[0022] Figure 5 This is a diagram of the structure pressing components of the present invention.

[0023] Figure 6 It is a cross-sectional schematic diagram of the structural pressing assembly of the present invention.

[0024] Figure 7 This is a diagram of the structural bending assembly of the present invention.

[0025] In the figure: 1. processing table; 2. stand; 3. control panel; 4. processing assembly; 41. positioning assembly; 42. pressing assembly; 43. bending assembly; 411. opposite threaded rod; 412. sleeve block; 413. connecting plate; 414. push plate; 415. limit plate; 416. limit block; 417. spring; 418. centering plate; 419. positioning plate; 421. fixing block; 422. first push rod; 423. first sealing ring; 424. air pipe; 425. second sealing ring; 426. second push rod; 427. pressing plate; 431. support plate; 432. motor; 433. rotating rod; 434. bending plate; 435. rubber pad. DETAILED DESCRIPTION

[0026] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0027] Embodiment 1: A preferred embodiment of a steel plate multi-angle bending device provided by the present invention is as follows Figures 1 to 7 As shown: A steel plate multi-angle bending device, comprising a processing table 1; A stand 2 is fixedly mounted on the top surface of the processing table 1; A control panel 3 is fixedly mounted on the top surface of the stand 2; And a processing component 4 is arranged below the control panel 3, the processing component 4 includes a positioning component 41 arranged above the processing table 1, the positioning component 41 includes opposing threaded rods 411 rotatably connected to the inside of the stand 2, the outer wall of the opposing threaded rods 411 is sleeved with a sleeve block 412, the outer wall of the sleeve block 412 is hinged with a connecting plate 413, the end of the connecting plate 413 away from the sleeve block 412 is hinged with a push plate 414, the end of the push plate 414 is fixedly installed with a limit plate 415, the bottom of the push plate 414 is slidably provided with a limit block 416, the side wall of the limit block 416 is fixedly installed with a spring 417, the outer wall of the limit block 416 is fixedly installed with a centering plate 418, and the bottom of the push plate 414 is fixedly installed with a positioning plate 419.

[0028] In this embodiment, when the steel plate needs to be bent, the steel plate is placed on the top surface of the processing table 1. In order to improve the bending effect, the bending part of the steel plate needs to be accurately positioned and restricted to avoid deviation of the bending part. At this time, the opposing threaded rod 411 is rotated. Since the limit plate 415 fixedly installed at the end of the push plate 414 is slidably arranged inside the stand 2, under its restriction, the rotating opposing threaded rod 411 drives the two sleeve blocks 412 sleeved on its outer wall to move in the opposite direction. Since the end of the connecting plate 413 is hinged with the sleeve block 412 and the top surface of the push plate 414, under its restriction, the sleeve block 412 is moved by the connecting plate 41 3. The push plates 414 are pushed downward so that the positioning plate 419 fixedly installed at the bottom of the push plates 414 presses the steel plate. The position pressed by the positioning plate 419 is the required bending position. When the push plates 414 move downward, the outer wall inclined surface of the center plate 418 contacts and squeezes the outer wall of the steel plate. Under the elastic action of the spring 417, the limit block 416 is pushed so that the limit block 416 drives the center plate 418 to move. The two center plates 418 center the steel plate. Together with the positioning plate 419, the steel plate can be accurately placed on the top surface of the processing table 1, making the bending more accurate to improve the bending effect.

[0029] Embodiment 2: Based on Embodiment 1, a preferred embodiment of a steel plate multi-angle bending device provided by the present invention is as follows: Figures 1 to 7 As shown: the pressing assembly 42 includes a fixed block 421 fixedly installed on the outer wall of the limiting plate 415, a first push rod 422 is fixedly installed on the bottom of the fixed block 421, a first sealing ring 423 is fixedly installed on the end of the first push rod 422 away from the fixed block 421, an air pipe 424 is slidably arranged on the outer wall of the first sealing ring 423, a second sealing ring 425 is slidably arranged inside the air pipe 424, a second push rod 426 is fixedly installed on the side wall of the second sealing ring 425, and a pressing plate 427 is fixedly installed on the end of the second push rod 426 away from the second sealing ring 425.

[0030] In this embodiment, when the steel plate is bent, the push plate 414 pushes the positioning plate 419 downward to position the bending part of the steel plate. At this time, the limit plate 415 fixedly installed at its end moves downward accordingly, and the limit plate 415 drives the fixed block 421 fixedly installed on its outer wall to move downward. The fixed block 421 drives the first push rod 422 and the first sealing ring 423 to slide toward the inside of the air pipe 424. Since the first sealing ring 423 and the second sealing ring 425 slide in a sealed manner with the inside of the air pipe 424, under its restriction, the first sealing ring 423 pushes the gas inside the air pipe 424, so that the second sealing ring 425 drives the second push rod 426 to slide toward the outside of the air pipe 424, and the second push rod 426 pushes the pressing plate 427 accordingly, so that the pressing plate 427 presses the steel plate on the top surface of the processing table 1 and fixes the steel plate on the top surface of the processing table 1 to prevent the steel plate from moving and causing bending deviation when it is bent.

[0031] Embodiment 3: Based on Embodiment 1, a preferred embodiment of a steel plate multi-angle bending device provided by the present invention is as follows: Figures 1 to 7 As shown: the bending assembly 43 includes a support plate 431 fixedly mounted on the outer wall of the processing table 1, a motor 432 is fixedly mounted on the top surface of the support plate 431, a rotating rod 433 is fixedly mounted on the output end of the motor 432, a bending plate 434 is fixedly mounted on the outer wall of the rotating rod 433, and a rubber pad 435 is fixedly mounted on the outer wall of the bending plate 434.

[0032] In this embodiment, when the steel plate is positioned and pressed on the top surface of the processing table 1, the motor 432 is started, and the rotating rod 433 fixedly installed at its output end rotates accordingly. The rotating rod 433 drives the bending plate 434 fixedly installed on its outer wall to rotate accordingly. The bending plate 434 pushes the bottom of the steel plate to bend it. Under the restriction of the rubber pad 435, the bending plate 434 can be prevented from rubbing and scratching the outer wall of the steel plate.

[0033] Furthermore, the outer wall of the centering plate 418 is set in an inclined surface. There are two centering plates 418, which are symmetrically distributed with the center line of the push plate 414. Under the restriction of the centering plate 418, the steel plate can be clamped in the center. The outer wall of the limiting plate 415 is set to slide inside the stand 2, and the outer wall of the positioning plate 419 is set in an inclined surface. Since the outer wall of the limiting plate 415 is set to slide inside the stand 2, under its restriction, the rotating opposite threaded rods 411 drive the sleeve block 412 mounted on its outer wall to move. Since the outer wall of the positioning plate 419 is set in an inclined surface, the bending part can be accurately pressed to avoid crease deviation.

[0034] Furthermore, the outer walls of the first sealing ring 423 and the second sealing ring 425 are sealed and slid inside the air pipe 424. There are two air pipes 424, which are symmetrically distributed with respect to the center line of the top surface of the processing table 1. Under its restriction, the first sealing ring 423 sliding into the air pipe 424 can push the second sealing ring 425 toward the outside of the air pipe 424, so that the pressure plate 427 presses the steel plate.

[0035] In addition, the rubber pad 435 is made of rubber material, and the rotating rod 433 is rotatably connected to the inside of the processing table 1. Under the restriction of the rubber pad 435 made of rubber material, scratches on the steel plate can be avoided.

[0036] A method for bending a steel plate at multiple angles, comprising the following steps: S1. When the steel plate needs to be bent, the steel plate is placed on the top surface of the processing table 1. In order to improve the bending effect, the bending part of the steel plate needs to be accurately positioned and limited to avoid deviation of the bending part. At this time, the opposing threaded rod 411 is rotated. Since the limit plate 415 fixedly installed at the end of the push plate 414 is slidably arranged inside the stand 2, under its restriction, the rotating opposing threaded rod 411 drives the two sleeve blocks 412 sleeved on its outer wall to move in the opposite direction. Since the end of the connecting plate 413 is hinged with the sleeve block 412 and the top surface of the push plate 414, under its restriction, the sleeve block 412 is The push plate 414 pushes downward, so that the positioning plate 419 fixedly installed at the bottom of the push plate 414 presses the steel plate. The position pressed by the positioning plate 419 is the desired bending position. When the push plate 414 moves downward, the outer wall inclined surface of the centering plate 418 contacts and squeezes the outer wall of the steel plate. Under the elastic action of the spring 417, the limit block 416 is pushed, so that the limit block 416 drives the centering plate 418 to move. The two centering plates 418 center the steel plate, and cooperate with the positioning plate 419 to accurately place the steel plate on the top surface of the processing table 1, so that the bending is more accurate, thereby improving the bending effect; S2. When the steel plate is bent, the push plate 414 pushes the positioning plate 419 downward to position the bending part of the steel plate. At this time, the limit plate 415 fixedly installed at its end moves downward accordingly, and the limit plate 415 drives the fixed block 421 fixedly installed on its outer wall to move downward. The fixed block 421 drives the first push rod 422 and the first sealing ring 423 to slide toward the inside of the air pipe 424. Since the first sealing ring 423 and the second sealing ring 425 slide in a sealed manner with the inside of the air pipe 424, under its restriction, the first sealing ring 423 pushes the gas inside the air pipe 424, so that the second sealing ring 425 drives the second push rod 426 to slide toward the outside of the air pipe 424, and the second push rod 426 pushes the pressing plate 427 accordingly, so that the pressing plate 427 presses the steel plate on the top surface of the processing table 1, fixes the steel plate on the top surface of the processing table 1, and avoids the movement of the steel plate when it is bent, resulting in bending deviation; S3. When the steel plate is positioned and pressed on the top surface of the processing table 1, the motor 432 is started, and the rotating rod 433 fixedly installed at its output end rotates accordingly. The rotating rod 433 drives the bending plate 434 fixedly installed on its outer wall to rotate accordingly. The bending plate 434 pushes the bottom of the steel plate to bend it. Under the restriction of the rubber pad 435, the bending plate 434 can be prevented from rubbing and scratching the outer wall of the steel plate.

[0037] The above are only exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any technician in the field without departing from the concept and principle of the present invention should fall within the scope of protection of the present invention. It should also be noted that the various components of the present invention are not limited to the above-mentioned overall application. The various technical features described in the specification of the present invention can be selected one by one or multiple ones can be used in combination according to actual needs. Therefore, the present invention should naturally cover other combinations and specific applications related to the invention of this case.

Claims

1. A steel plate multi-angle bending device, comprising a processing table (1); A stand (2) is fixedly mounted on the top surface of the processing table (1); A control panel (3) is fixedly mounted on the top surface of the stand (2); and a processing component (4) arranged below the control panel (3), characterized in that: The processing assembly (4) comprises a positioning assembly (41) arranged above the processing table (1), a pressing assembly (42) is arranged outside the positioning assembly (41), and a bending assembly (43) is arranged on a side of the pressing assembly (42) close to the positioning assembly (41).

2. The multi-angle bending device for steel plates according to claim 1, characterized in that: The positioning assembly (41) comprises opposing threaded rods (411) rotatably connected to the interior of the stand (2); a sleeve block (412) is sleeved on the outer wall of the opposing threaded rods (411); a connecting plate (413) is hingedly connected to the outer wall of the sleeve block (412); a push plate (414) is hingedly connected to one end of the connecting plate (413) away from the sleeve block (412); a limit plate (415) is fixedly installed at the end of the push plate (414); a limit block (416) is slidably provided at the bottom of the push plate (414); a spring (417) is fixedly installed on the side wall of the limit block (416); a centering plate (418) is fixedly installed on the outer wall of the limit block (416); and a positioning plate (419) is fixedly installed at the bottom of the push plate (414).

3. The multi-angle bending device for steel plates according to claim 1, characterized in that: The pressing assembly (42) comprises a fixed block (421) fixedly mounted on the outer wall of the limiting plate (415); a first push rod (422) is fixedly mounted on the bottom of the fixed block (421); a first sealing ring (423) is fixedly mounted on one end of the first push rod (422) away from the fixed block (421); an air pipe (424) is slidably mounted on the outer wall of the first sealing ring (423); a second sealing ring (425) is slidably mounted inside the air pipe (424); a second push rod (426) is fixedly mounted on the side wall of the second sealing ring (425); and a pressing plate (427) is fixedly mounted on one end of the second push rod (426) away from the second sealing ring (425).

4. The multi-angle bending device for steel plates according to claim 1, characterized in that: The bending assembly (43) comprises a support plate (431) fixedly mounted on the outer wall of the processing table (1); a motor (432) is fixedly mounted on the top surface of the support plate (431); a rotating rod (433) is fixedly mounted on the output end of the motor (432); a bending plate (434) is fixedly mounted on the outer wall of the rotating rod (433); and a rubber pad (435) is fixedly mounted on the outer wall of the bending plate (434).

5. The multi-angle bending device for steel plates according to claim 2, characterized in that: The outer wall of the centering plate (418) is arranged in an inclined surface, and there are two centering plates (418) which are symmetrically distributed about the center line of the push plate (414).

6. The steel plate multi-angle bending device according to claim 2, characterized in that: The outer wall of the limiting plate (415) is slidably arranged inside the stand (2), and the outer wall of the positioning plate (419) is arranged in an inclined surface.

7. The multi-angle bending device for steel plates according to claim 3, characterized in that: The outer walls of the first sealing ring (423) and the second sealing ring (425) are sealed and slidable with the inside of the air pipe (424), and there are two air pipes (424) which are symmetrically distributed about the center line of the top surface of the processing table (1).

8. The steel plate multi-angle bending device according to claim 4, characterized in that: The rubber pad (435) is made of rubber, and the rotating rod (433) is rotatably connected to the inside of the processing table (1).

9. A method for bending a steel plate at multiple angles, characterized in that: These include: S1. When it is necessary to bend the steel plate, the steel plate is placed on the top surface of the processing table (1). In order to improve the bending effect, the bending part of the steel plate needs to be accurately positioned and restricted to avoid deviation of the bending part. At this time, the opposing threaded rods (411) are rotated. Since the limit plate (415) fixedly installed at the end of the push plate (414) is slidably arranged inside the stand (2), under the restriction of the limit plate (415), the rotating opposing threaded rods (411) drive the two sleeve blocks (412) sleeved on the outer wall thereof to move in the opposite direction. Since the end of the connecting plate (413) is hinged to the sleeve block (412) and the top surface of the push plate (414), under the restriction of the limit plate (415), the sleeve block (412) is pressed against the push plate (414) through the connecting plate (413). The plate (414) is pushed downward, so that the positioning plate (419) fixedly installed at the bottom of the push plate (414) presses the steel plate. The position pressed by the positioning plate (419) is the desired bending position. When the push plate (414) moves downward, the outer wall inclined surface of the center plate (418) contacts and squeezes the outer wall of the steel plate. Under the elastic action of the spring (417), the limit block (416) is pushed, so that the limit block (416) drives the center plate (418) to move. The two center plates (418) center the steel plate. In combination with the positioning plate (419), the steel plate can be accurately placed on the top surface of the processing table (1), making the bending more accurate, thereby improving the bending effect. S2. When the steel plate is bent, the push plate (414) pushes the positioning plate (419) downward to position the bending portion of the steel plate. At this time, the limit plate (415) fixedly installed at the end thereof moves downward accordingly. The limit plate (415) drives the fixed block (421) fixedly installed on the outer wall thereof to move downward. The fixed block (421) drives the first push rod (422) and the first sealing ring (423) to slide toward the inside of the air pipe (424). Due to the first sealing ring (423) and the second sealing ring (425), The first sealing ring (423) slides in a sealed manner with the inside of the air pipe (424). Under the restriction of the first sealing ring (423), the gas inside the air pipe (424) is pushed, so that the second sealing ring (425) drives the second push rod (426) to slide toward the outside of the air pipe (424). The second push rod (426) pushes the pressing plate (427) accordingly, so that the pressing plate (427) presses the steel plate on the top surface of the processing table (1), fixes the steel plate on the top surface of the processing table (1), and prevents the steel plate from moving when it is bent, resulting in bending deviation; S3. When the steel plate is positioned and pressed on the top surface of the processing table (1), the motor (432) is started, and the rotating rod (433) fixedly mounted on the output end thereof rotates accordingly. The rotating rod (433) drives the bending plate (434) fixedly mounted on the outer wall thereof to rotate accordingly. The bending plate (434) pushes the bottom of the steel plate to bend it. Under the restriction of the rubber pad (435), the bending plate (434) can be prevented from rubbing and scratching the outer wall of the steel plate.

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