A steel plate bending machine based on stainless steel air pipe production

Abstract

The application discloses a kind of based on stainless steel air pipe production's plate bending machine, including machine body, the top left side of the machine body is provided with two groups of fixed frame.The present application realizes the full-process automation production of stainless steel square tube air pipe from plate bending forming to welding, without manual multiple transfer, greatly improve production efficiency.Among them, adjusting mechanism adapts the production demand of different size air pipe;Tightening mechanism and first bending mechanism are provided with adjustable spacing and lifting function, can be in the bending process to the both ends of steel plate stable pressing, guarantee bending accuracy;Second bending mechanism is driven by motor to rotate 180 ° bending plate, cooperate with clamping block to clamp the end of steel plate, realize secondary bending forming;Pushing mechanism accurately sends pipe into box for welding forming;And the present application can also butt welding to short air pipe, avoids the manual butt joint process after segmented production, convenient to operate, meets the batch production demand.

Description

Technical Field

[0001] This invention relates to the field of stainless steel duct production technology, specifically to a steel plate bending machine based on stainless steel duct production. Background Technology

[0002] Stainless steel ducts are widely used in HVAC, building ventilation, and other fields. In their production process, bending and welding of steel plates are key steps. Currently, most existing steel plate bending equipment can only achieve single or double bending, and cannot bend flat steel plates into square tube structures in one go. It usually requires multiple machines or multiple manual flipping and transfers to complete the four-sided bending. The production process is cumbersome and inefficient. Moreover, multiple transfers can easily lead to positioning deviations of the steel plates, affecting the forming accuracy and consistency of the ducts.

[0003] Furthermore, existing duct welding methods mostly rely on manual welding or simple welding equipment. The welding positions are fixed, resulting in poor flexibility. This is particularly inconvenient for butt welding of short ducts, often requiring manual alignment before welding. This process is complex, and the weld quality is inconsistent, making it difficult to meet the demands of mass production. Additionally, existing equipment often has fixed bending spacing and clamping positions with limited adjustment range. When producing ducts of different sizes, frequent mold changes or equipment adjustments are necessary, leading to poor versatility and increased production costs and changeover time. Summary of the Invention

[0004] To solve the above-mentioned technical problems, a steel plate bending machine based on stainless steel duct production is provided. This technical solution solves the problems mentioned in the background technology.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A steel plate bending machine based on stainless steel duct production includes a machine body, two sets of fixed frames are provided on the top left side of the machine body, a box is installed on the top right side of the machine body, an adjustment mechanism is provided on the left side of the box, a clamping mechanism is provided between the two sets of fixed frames, a first bending mechanism is installed on the top of the fixed frames, and a second bending mechanism is connected to the adjustment mechanism. The adjustment mechanism, clamping mechanism, first bending mechanism and second bending mechanism cooperate to bend the steel plate to form a square tube shape. A pushing mechanism is also provided on the top left side of the machine body, and a welding mechanism is installed inside the box.

[0006] Preferably, the adjustment mechanism includes an L-shaped plate, with two sets of L-shaped plates fixedly installed on the top right side of the machine body. Two sets of support plates are also welded to the top of the machine body. A first threaded rod is rotatably connected between the two sets of support plates. The threads at both ends of the first threaded rod have opposite directions. A first fixed rod is also fixedly installed between the two sets of support plates. Two sets of movable plates are slidably connected to the first fixed rod. The two sets of movable plates are respectively threaded to both ends of the outer wall of the first threaded rod. A first servo motor is provided on the outer wall of one set of support plates. The outer end of the first threaded rod is fixedly connected to the output end of the first servo motor.

[0007] Preferably, the pressing mechanism includes a first lifting frame, a lead screw is rotatably connected between the horizontal plate of the fixed frame and the top of the machine body, the first lifting frame is threadedly connected to the lead screw, the first lifting frame is slidably connected to the guide rod, the guide rod is fixedly installed between the horizontal plate of the fixed frame and the top of the machine body, a first stepper motor is provided on the top of the fixed frame, and the lead screw is fixedly installed at the output end of the first stepper motor.

[0008] Preferably, the clamping mechanism further includes a second threaded rod, a second fixed rod, and a clamping plate. The second threaded rod is rotatably connected inside the first lifting frame, and the second fixed rod is fixedly installed inside the first lifting frame. Two sets of clamping plates are provided and are respectively threaded to both ends of the outer wall of the second threaded rod. The clamping plate is slidably connected to the second fixed rod. A second servo motor for driving the second threaded rod to rotate is provided on the outer wall of the first lifting frame.

[0009] Preferably, the first bending mechanism includes a first electric push rod fixedly connected to the top of the fixed frame, the output end of the first electric push rod being fixedly connected to the second lifting frame, a third threaded rod being rotatably connected inside the second lifting frame, a first bending plate being threadedly connected to both ends of the outer wall of the third threaded rod, the threads at both ends of the third threaded rod having opposite directions, a third fixed rod being fixedly connected inside the second lifting frame, the first bending plate being slidably connected to the third fixed rod, and a third servo motor for driving the third threaded rod to rotate being provided on the outer wall of the second lifting frame.

[0010] Preferably, the second bending mechanism includes a second bending plate rotatably connected to the top of the movable plate. An electric motor for driving the second bending plate to rotate is installed on the outer wall of the movable plate. A fourth servo motor is provided on the inner wall of the second bending plate. The output end of the fourth servo motor is fixedly connected to a fourth threaded rod. A fourth fixing rod is also welded inside the second bending plate. Two sets of clamping blocks are slidably connected to the fourth fixing rod. The two sets of clamping blocks are respectively threaded to both ends of the outer wall of the fourth threaded rod, and the spiral directions of the two ends of the fourth threaded rod are opposite.

[0011] Preferably, the pushing mechanism includes a second electric push rod fixedly installed inside the machine body, the output end of the second electric push rod being fixedly connected to the lifting block, and a third electric push rod being provided on the outer wall of the lifting block, the output end of the third electric push rod penetrating through the outer wall of the lifting block and being fixedly connected to a mounting frame.

[0012] Preferably, the pushing mechanism further includes a fifth threaded rod and a fifth fixed rod. The fifth threaded rod is rotatably connected inside the mounting frame, and the fifth fixed rod is welded inside the mounting frame. A fifth servo motor for driving the fifth threaded rod to rotate is installed on the outer wall of the mounting frame. The spirals at both ends of the fifth threaded rod have opposite directions of rotation, and both ends of the outer wall of the fifth threaded rod are threadedly connected to clamping members. Both sets of clamping members are slidably connected to the fifth fixed rod.

[0013] Preferably, the left side of the box is provided with two sets of electric doors, and the electric doors are provided with through slots. Cylinders are fixedly installed on the front and rear sides of the box, and the output end of the cylinder extends into the box and is fixedly installed with a clamping plate.

[0014] Preferably, the welding mechanism includes a gear ring rotatably mounted on the inner wall of the housing, a fourth electric push rod provided on the outer wall of the gear ring, a welding head fixedly connected to the output end of the fourth electric push rod, a gear rotatably connected to the inner wall of the housing, the gear meshing with the gear ring, a drive motor provided on the right side of the housing, the output end of the drive motor extending into the housing and fixedly connected to the gear.

[0015] Compared with the prior art, the present invention provides a steel plate bending machine based on stainless steel duct production, which has the following beneficial effects: This invention achieves fully automated production of stainless steel square tube ducts from steel plate bending to welding through the coordinated operation of an adjustment mechanism, a pressing mechanism, a first bending mechanism, a second bending mechanism, a pushing mechanism, and a welding mechanism. This eliminates the need for multiple manual transfers, significantly improving production efficiency. Specifically, the adjustment mechanism adapts to the production needs of ducts of different sizes; both the pressing mechanism and the first bending mechanism have adjustable spacing and lifting functions, enabling stable pressing of both ends of the steel plate during bending to ensure bending accuracy; the second bending mechanism uses a motor to drive the bending plate to rotate 180°, and works with clamping blocks to clamp the ends of the steel plate for secondary bending; the pushing mechanism precisely feeds the duct into the housing for welding; and this invention can also perform butt welding of short ducts, avoiding the manual joining process after segmented production, making operation convenient and meeting the needs of mass production. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the adjustment mechanism in this invention; Figure 4 This is a schematic diagram of the structure of the second bending mechanism in this invention; Figure 5 This is a schematic diagram of the clamping mechanism in this invention; Figure 6 This is a schematic diagram of the structure of the first bending mechanism in this invention; Figure 7 This is a schematic diagram of the pushing mechanism in this invention; Figure 8 This is a schematic diagram of the outer structure of the box in this invention; Figure 9 This is a schematic diagram of the welding mechanism in this invention.

[0017] The numbers on the map are: 1. Body; 101. Mounting frame; 102. Housing; 103. Electric door; 104. Groove; 105. Cylinder; 106. Clamping plate; 2. Adjustment mechanism; 201. L-shaped plate; 202. Support plate; 203. First threaded rod; 204. First fixed rod; 205. First servo motor; 206. Movable plate; 3. Clamping mechanism; 301. First lead screw; 302. First guide rod; 303. First stepper motor; 304. First lifting frame; 305. Second threaded rod; 306. Second fixing rod; 307. Second servo motor; 308. Clamping plate; 4. First bending mechanism; 401. First electric push rod; 402. Second lifting frame; 403. Third threaded rod; 404. Third fixing rod; 405. Third servo motor; 406. First bending plate; 5. Second bending mechanism; 501. Second bending plate; 502. Electric motor; 503. Fourth servo motor; 504. Fourth threaded rod; 505. Fourth fixing rod; 506. Clamping block; 6. Pushing mechanism; 601. Second electric push rod; 602. Lifting block; 603. Third electric push rod; 604. Mounting frame; 605. Fifth threaded rod; 606. Fifth fixing rod; 607. Fifth servo motor; 608. Clamping component; 7. Welding mechanism; 701. Gear ring; 702. Fourth electric push rod; 703. Welding head; 704. Gear; 705. Drive motor. Detailed Implementation

[0018] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0019] Example 1

[0020] Please refer to Figures 1-9 As shown, a steel plate bending machine based on stainless steel duct production includes a machine body 1. Two sets of fixed frames 101 are arranged on the top left side of the machine body 1. A box 102 is installed on the top right side of the machine body 1. An adjustment mechanism 2 is arranged on the left side of the box 102. A pressing mechanism 3 is arranged between the two sets of fixed frames 101. A first bending mechanism 4 is installed on the top of the fixed frames 101. A second bending mechanism 5 is connected to the adjustment mechanism 2. The adjustment mechanism 2, the pressing mechanism 3, the first bending mechanism 4 and the second bending mechanism 5 cooperate to bend the steel plate to form a square tube shape. A pushing mechanism 6 is also arranged on the top left side of the machine body 1. A welding mechanism 7 is installed inside the box 102.

[0021] Example 2

[0022] Please refer to Figure 2 and Figure 3 As shown, the adjustment mechanism 2 includes an L-shaped plate 201. Two sets of L-shaped plates 201 are fixedly installed on the top right side of the body 1. Two sets of support plates 202 are also welded to the top of the body 1. A first threaded rod 203 is rotatably connected between the two sets of support plates 202. The threads at both ends of the first threaded rod 203 have opposite directions. A first fixed rod 204 is also fixedly installed between the two sets of support plates 202. Two sets of movable plates 206 are slidably connected to the first fixed rod 204. The two sets of movable plates 206 are respectively threaded to both ends of the outer wall of the first threaded rod 203. A first servo motor 205 is provided on the outer wall of one set of support plates 202. The outer end of the first threaded rod 203 is fixedly connected to the output end of the first servo motor 205.

[0023] Those skilled in the art will understand that by driving the output end of the first servo motor 205 to rotate, the first threaded rod 203 rotates, causing the two sets of movable plates 206 to move closer or further apart. Both sets of movable plates 206 slide along the horizontal plates of the two sets of L-shaped plates 201, thus changing the distance between the two sets of movable plates 206.

[0024] Example 3

[0025] Please refer to Figure 5 As shown, the clamping mechanism 3 includes a first lifting frame 304, a lead screw 301 is rotatably connected between the horizontal plate of the fixed frame 101 and the top of the machine body 1, the first lifting frame 304 is threadedly connected to the lead screw 301, the first lifting frame 304 is slidably connected to the guide rod 302, the guide rod 302 is fixedly installed between the horizontal plate of the fixed frame 101 and the top of the machine body 1, a first stepper motor 303 is provided on the top of the fixed frame 101, and the lead screw 301 is fixedly installed at the output end of the first stepper motor 303.

[0026] Please refer to Figure 5 As shown, the clamping mechanism 3 also includes a second threaded rod 305, a second fixed rod 306, and a clamping plate 308. The second threaded rod 305 is rotatably connected inside the first lifting frame 304, and the second fixed rod 306 is fixedly installed inside the first lifting frame 304. Two sets of clamping plates 308 are provided and are respectively threaded to both ends of the outer wall of the second threaded rod 305, and the clamping plate 308 is slidably connected to the second fixed rod 306. A second servo motor 307 for driving the second threaded rod 305 to rotate is provided on the outer wall of the first lifting frame 304.

[0027] Those skilled in the art will understand that by driving the output ends of the two sets of first stepper motors 303 to rotate synchronously, the two sets of lead screws 301 rotate synchronously, driving the first lifting frame 304 to move up and down along the outer wall of the guide rod 302, thereby driving the two sets of pressing plates 308 to move up and down; and by driving the output end of the second servo motor 307 to drive the second threaded rod 305 to rotate, the two sets of pressing plates 308 move closer or further apart, changing the distance between the two sets of pressing plates 308.

[0028] Example 4

[0029] Please refer to Figure 6 As shown, the first bending mechanism 4 includes a first electric push rod 401 fixedly connected to the top of the fixed frame 101. The output end of the first electric push rod 401 is fixedly connected to the second lifting frame 402. A third threaded rod 403 is rotatably connected inside the second lifting frame 402. Both ends of the outer wall of the third threaded rod 403 are threadedly connected to the first bending plate 406. The threads at both ends of the third threaded rod 403 are in opposite directions. A third fixed rod 404 is also fixedly connected inside the second lifting frame 402. The first bending plate 406 is slidably connected to the third fixed rod 404. A third servo motor 405 for driving the third threaded rod 403 to rotate is provided on the outer wall of the second lifting frame 402.

[0030] Those skilled in the art will understand that by driving the output end of the third servo motor 405 to rotate the third threaded rod 403, the two sets of first bending plates 406 move closer or further apart, changing the distance between the two sets of first bending plates 406; after the distance is adjusted, the output end of the first electric push rod 401 can be controlled to extend or retract, thereby driving the two sets of first bending plates 406 to move downward or upward.

[0031] Example 5

[0032] Please refer to Figure 6As shown, the second bending mechanism 5 includes a second bending plate 501 rotatably connected to the top of the movable plate 206. A motor 502 for driving the second bending plate 501 to rotate is installed on the outer wall of the movable plate 206. A fourth servo motor 503 is provided on the inner wall of the second bending plate 501. The output end of the fourth servo motor 503 is fixedly connected to the fourth threaded rod 504. A fourth fixing rod 505 is also welded inside the second bending plate 501. Two sets of clamping blocks 506 are slidably connected to the fourth fixing rod 505. The two sets of clamping blocks 506 are respectively threaded to both ends of the outer wall of the fourth threaded rod 504, and the spiral directions of the two ends of the fourth threaded rod 504 are opposite.

[0033] Those skilled in the art will understand that by driving the output end of the fourth servo motor 503 to drive the fourth threaded rod 504 to rotate, the two sets of clamping blocks 506 move closer or further apart, thus changing the distance between the two sets of clamping blocks 506. In addition, the output end of the drive motor 502 is rotated, which drives the second bending plate 501 to rotate, so that the second bending plate 501 is in a horizontal or vertical state.

[0034] Example 6

[0035] Please refer to Figure 7 As shown, the pushing mechanism 6 includes a second electric push rod 601 fixedly installed inside the body 1. The output end of the second electric push rod 601 is fixedly connected to the lifting block 602. A third electric push rod 603 is provided on the outer wall of the lifting block 602. The output end of the third electric push rod 603 passes through the outer wall of the lifting block 602 and is fixedly connected to the mounting frame 604.

[0036] Please refer to Figure 7 As shown, the pushing mechanism 6 also includes a fifth threaded rod 605 and a fifth fixed rod 606. The fifth threaded rod 605 is rotatably connected inside the mounting frame 604, and the fifth fixed rod 606 is welded inside the mounting frame 604. A fifth servo motor 607 for driving the fifth threaded rod 605 to rotate is installed on the outer wall of the mounting frame 604. The spirals at both ends of the fifth threaded rod 605 have opposite directions of rotation, and both ends of the outer wall of the fifth threaded rod 605 are threadedly connected to clamping members 608. Both sets of clamping members 608 are slidably connected to the fifth fixed rod 606.

[0037] Those skilled in the art will understand that by extending or retracting the output end of the second electric push rod 601, the lifting block 602 moves upward or downward, thereby causing the two sets of clamping members 608 to move upward or downward; and by controlling the extension or retraction of the output end of the third electric push rod 603, the two sets of clamping members 608 move to the right or left; in addition, by driving the output end of the fifth servo motor 607 to rotate the fifth threaded rod 605, the two sets of clamping members 608 move closer to or further away from each other.

[0038] Example 7

[0039] Please refer to Figure 8 and Figure 9 As shown, two sets of electric doors 103 are provided on the left side of the box 102. The electric doors 103 have slots 104 through them. Cylinders 105 are fixedly installed on the front and rear sides of the box 102. The output end of the cylinders 105 extends into the box 102 and is fixedly installed with clamping plates 106.

[0040] Please refer to Figure 9 As shown, the welding mechanism 7 includes a gear ring 701 rotatably mounted on the inner wall of the housing 102. A fourth electric push rod 702 is provided on the outer wall of the gear ring 701. A welding head 703 is fixedly connected to the output end of the fourth electric push rod 702. A gear 704 is also rotatably connected to the inner wall of the housing 102. The gear 704 meshes with the gear ring 701. A drive motor 705 is provided on the right side of the housing 102. The output end of the drive motor 705 extends into the housing 102 and is fixedly connected to the gear 704.

[0041] Those skilled in the art will understand that by rotating the output end of the drive motor 705, the gear 704 rotates, which in turn drives the gear ring 701 to rotate, thus enabling the fourth electric push rod 702 and the welding head 703 to rotate as a whole around the center of the gear ring 701; and furthermore, by controlling the extension or retraction of the output end of the fourth electric push rod 702, the welding head 703 can be driven to move to the left or to the right.

[0042] To clearly describe the working principle of this invention, we will use... Figure 1 The explanation is based on a directional perspective, as follows: S1. According to the production dimensions of the square duct, the output end of the first servo motor 205 is driven to rotate, causing the first threaded rod 203 to rotate, which changes the distance between the two sets of movable plates 206. The second bending plate 501 at the top of the front movable plate 206 rotates forward to a horizontal state, and the second bending plate 501 at the top of the rear movable plate 206 rotates backward to a horizontal state. The external robotic arm clamps the steel plate and transfers it above the two sets of horizontal second bending plates 501. S2. Under the action of the clamping mechanism 3, the two sets of clamping plates 308 are located directly above the two sets of second bending plates 501 and move downward to clamp the two ends of the steel plate. At this time, the rear side of the front clamping plate 308, the rear side of the front second bending plate 501, and the rear side of the front movable plate 206 are all on the same plane. Similarly, the front side of the rear clamping plate 308, the front side of the rear second bending plate 501, and the front side of the rear movable plate 206 are also on the same plane. S3. Under the action of the first bending mechanism 4, the two sets of first bending plates 406 are respectively located above the two sets of second bending plates 501 and move downward. At this time, the front first bending plate 406 moves downward along the rear side of the front second bending plate 501, and the rear first bending plate 406 moves downward along the front side of the rear second bending plate 501, thus realizing the first synchronous bending. S4. Under the action of the second bending mechanism 5, the front and rear ends of the steel plate are clamped by two sets of clamping blocks 506 approaching each other. Then, the output ends of the two sets of motors 502 are driven to rotate. The front second bending plate 501 rotates 180 degrees to the rear side, and the rear second bending plate 501 rotates 180 degrees to the front side, so that the front and rear ends of the steel plate are bent and joined together to form a square tube. S5. Under the action of the pushing mechanism 6, the two sets of clamping parts 608 clamp and fix the square tube on the front and rear sides and push it into the housing 102. Then, the two sets of electric doors 103 move closer to each other until they are closed. The outer wall of the rod of the output shaft of the second electric push rod 601 is located in the slot 104 opened on the two sets of electric doors 103. Finally, under the action of the welding mechanism 7, the welding head 703 is located directly above the joint of the square tube. The welding head 703 moves to the left to realize the welding of the joint, thereby producing the air duct. S6. If the length of the air duct produced in the above S5 process is too short, the output ends of the two sets of cylinders 105 are extended, driving the two sets of clamping plates 106 to move closer to each other and clamp and fix the air duct after welding. Then, the above operation is repeated, and another set of square pipes also enters the box 102 and is also welded. Then, the two welded air ducts are joined together. The output end of the drive motor 705 is rotated, causing the gear 704 to rotate, which drives the gear ring 701 to rotate. This realizes that the fourth electric push rod 702 and the welding head 703 rotate as a whole around the center of the gear ring 701. The welding head 703 welds the joint, which is convenient and quick and meets the needs of the staff.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A steel plate bending machine based on stainless steel duct production, comprising a machine body (1), characterized in that, Two sets of fixing frames (101) are provided on the top left side of the machine body (1), and a box (102) is installed on the top right side of the machine body (1). An adjustment mechanism (2) is provided on the left side of the box (102). A pressing mechanism (3) is provided between the two sets of fixing frames (101). A first bending mechanism (4) is installed on the top of the fixing frame (101). A second bending mechanism (5) is connected to the adjustment mechanism (2). The adjustment mechanism (2), pressing mechanism (3), first bending mechanism (4) and second bending mechanism (5) work together to bend the steel plate to form a square tube. A pushing mechanism (6) is also provided on the top left side of the machine body (1). A welding mechanism (7) is installed inside the box (102).

2. The steel plate bending machine based on stainless steel duct production according to claim 1, characterized in that, The adjustment mechanism (2) includes an L-shaped plate (201). The L-shaped plate (201) is provided with two sets of fixed installations on the top right side of the body (1). The top of the body (1) is also welded with two sets of support plates (202). A first threaded rod (203) is rotatably connected between the two sets of support plates (202). The threads at both ends of the first threaded rod (203) are opposite in direction. A first fixed rod (204) is also fixedly installed between the two sets of support plates (202). Two sets of movable plates (206) are slidably connected on the first fixed rod (204). The two sets of movable plates (206) are respectively threaded to both ends of the outer wall of the first threaded rod (203). A first servo motor (205) is provided on the outer wall of one set of support plates (202). The outer end of the first threaded rod (203) is fixedly connected to the output end of the first servo motor (205).

3. A steel plate bending machine based on stainless steel duct production according to claim 1, characterized in that, The pressing mechanism (3) includes a first lifting frame (304), a lead screw (301) is rotatably connected between the horizontal plate of the fixed frame (101) and the top of the machine body (1), the first lifting frame (304) is threadedly connected to the lead screw (301), the first lifting frame (304) is slidably connected to the guide rod (302), the guide rod (302) is fixedly installed between the horizontal plate of the fixed frame (101) and the top of the machine body (1), a first stepper motor (303) is provided on the top of the fixed frame (101), and the lead screw (301) is fixedly installed at the output end of the first stepper motor (303).

4. A steel plate bending machine based on stainless steel duct production according to claim 3, characterized in that, The clamping mechanism (3) further includes a second threaded rod (305), a second fixed rod (306), and a clamping plate (308). The second threaded rod (305) is rotatably connected inside the first lifting frame (304), and the second fixed rod (306) is fixedly installed inside the first lifting frame (304). The clamping plate (308) is provided in two sets and is threadedly connected to both ends of the outer wall of the second threaded rod (305). The clamping plate (308) is slidably connected to the second fixed rod (306). A second servo motor (307) for driving the second threaded rod (305) to rotate is provided on the outer wall of the first lifting frame (304).

5. A steel plate bending machine based on stainless steel duct production according to claim 1, characterized in that, The first bending mechanism (4) includes a first electric push rod (401) fixedly connected to the top of the fixed frame (101). The output end of the first electric push rod (401) is fixedly connected to the second lifting frame (402). The second lifting frame (402) is rotatably connected to a third threaded rod (403). The outer walls of the third threaded rod (403) are threaded with first bending plates (406) at both ends. The threads at both ends of the third threaded rod (403) are in opposite directions. The second lifting frame (402) is also fixedly connected to a third fixed rod (404). The first bending plate (406) is slidably connected to the third fixed rod (404). The outer wall of the second lifting frame (402) is provided with a third servo motor (405) that drives the third threaded rod (403) to rotate.

6. A steel plate bending machine based on stainless steel duct production according to claim 2, characterized in that, The second bending mechanism (5) includes a second bending plate (501) rotatably connected to the top of the movable plate (206). An electric motor (502) for driving the second bending plate (501) to rotate is installed on the outer wall of the movable plate (206). A fourth servo motor (503) is provided on the inner wall of the second bending plate (501). The output end of the fourth servo motor (503) is fixedly connected to the fourth threaded rod (504). A fourth fixing rod (505) is also welded inside the second bending plate (501). Two sets of clamping blocks (506) are slidably connected on the fourth fixing rod (505). The two sets of clamping blocks (506) are respectively threaded to both ends of the outer wall of the fourth threaded rod (504), and the spiral directions of the two ends of the fourth threaded rod (504) are opposite.

7. A steel plate bending machine based on stainless steel duct production according to claim 1, characterized in that, The pushing mechanism (6) includes a second electric push rod (601) fixedly installed inside the body (1). The output end of the second electric push rod (601) is fixedly connected to the lifting block (602). A third electric push rod (603) is provided on the outer wall of the lifting block (602). The output end of the third electric push rod (603) passes through the outer wall of the lifting block (602) and is fixedly connected to the mounting frame (604).

8. A steel plate bending machine based on stainless steel duct production according to claim 7, characterized in that, The pushing mechanism (6) further includes a fifth threaded rod (605) and a fifth fixed rod (606). The fifth threaded rod (605) is rotatably connected inside the mounting frame (604), and the fifth fixed rod (606) is welded inside the mounting frame (604). A fifth servo motor (607) for driving the fifth threaded rod (605) to rotate is installed on the outer wall of the mounting frame (604). The spirals at both ends of the fifth threaded rod (605) are opposite in direction, and both ends of the outer wall of the fifth threaded rod (605) are threadedly connected to clamping members (608). Both sets of clamping members (608) are slidably connected to the fifth fixed rod (606).

9. A steel plate bending machine based on stainless steel duct production according to claim 1, characterized in that, Two sets of electric doors (103) are provided on the left side of the box (102). The electric doors (103) have slots (104) through them. Cylinders (105) are fixedly installed on the front and rear sides of the box (102). The output end of the cylinder (105) extends into the box (102) and is fixedly installed with a clamping plate (106).

10. A steel plate bending machine based on stainless steel duct production according to claim 1, characterized in that, The welding mechanism (7) includes a gear ring (701) rotatably mounted on the inner wall of the housing (102). A fourth electric push rod (702) is provided on the outer wall of the gear ring (701). A welding head (703) is fixedly connected to the output end of the fourth electric push rod (702). A gear (704) is also rotatably connected to the inner wall of the housing (102). The gear (704) meshes with the gear ring (701). A drive motor (705) is provided on the right side of the housing (102). The output end of the drive motor (705) extends into the housing (102) and is fixedly connected to the gear (704).

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