A bending machine for multi-power towing U

Abstract

The present invention relates to a bending machine for multi-power dragging U, and its technical key points are as follows: it includes a frame; a bending mechanism which is arranged on the frame and can bend workpieces; a follow-up platform which is slidably arranged longitudinally on the frame, and a lifting drive mechanism for driving the follow-up platform to lift is arranged on the frame; a dragging U assembly which is movably arranged on the follow-up platform, the dragging U assembly includes a bottom dragging U plate capable of supporting the U-shaped pipe of the workpiece, and at least one layer of movable dragging U plates stacked on the bottom dragging U plate, the movable dragging U plates can move relative to the bottom dragging U plate to support the U-shaped pipe of the workpiece, a dragging U moving mechanism for driving the bottom dragging U plate to approach or move away from the workpiece is arranged on the follow-up platform, and at least one dragging U power device corresponding to the movable dragging U plates one by one and capable of pushing the movable dragging U plates into the U-shaped pipe of the workpiece is arranged on the dragging U assembly. The structure of the present invention is simple. By arranging the dragging U assembly to hold the U-shaped pipe of the workpiece, it is convenient to use and has high working efficiency.

Description

Technical Field

[0001] The present invention relates to a bending machine on a bending machine. Background Art

[0002] Heat exchangers are generally composed of multiple layers of workpieces, and each layer has heat exchange tubes. The heat exchange tubes form U-shaped ends at the ends of the heat exchanger. Since existing bending machines generally do not have a U-dragging component, the U-shaped ends are not stressed. Especially during multiple bendings, the layers of the workpiece will move relative to each other, and the fins on the heat exchange tubes are prone to abnormal deformation, resulting in a high defective rate. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a bending machine with a U-dragging component that has a simple structure and can improve the finished product rate.

[0004] To solve the above problems, the present invention adopts the following technical solutions:

[0005] A bending machine with multiple power U-dragging, characterized in that it includes:

[0006] A frame;

[0007] A bending mechanism, which is arranged on the frame and can bend the workpiece;

[0008] A follow-up platform, which is longitudinally slidably arranged on the frame, and a lifting drive mechanism for driving the follow-up platform to lift is arranged on the frame;

[0009] A U-dragging component, which is movably arranged on the follow-up platform. The U-dragging component includes a bottom U-dragging plate that can support the U-shaped tube of the workpiece, and at least one layer of movable U-dragging plates stacked on the bottom U-dragging plate. The movable U-dragging plates can move relative to the bottom U-dragging plate to support the U-shaped tube of the workpiece. A U-dragging moving mechanism for driving the bottom U-dragging plate to approach or move away from the workpiece is arranged on the follow-up platform, and at least one U-dragging power device corresponding to the movable U-dragging plates one by one and capable of pushing the movable U-dragging plates into the U-shaped tube of the workpiece is arranged on the U-dragging component.

[0010] A bending machine with multiple power U-dragging as described above, characterized in that: the U-dragging component further includes a U-dragging base frame slidably arranged on the follow-up platform, and the bottom U-dragging plate is fixed on the U-dragging base frame.

[0011] A bending machine with multiple power U-dragging as described above, characterized in that: there is one movable U-dragging plate. The U-dragging power device includes a first pushing cylinder and a second pushing cylinder arranged on the U-dragging base frame. A first pushing block capable of pushing the movable U-dragging plate is arranged on the cylinder rod of the first pushing cylinder, and a second pushing block capable of pushing the movable U-dragging plate is arranged on the cylinder rod of the second pushing cylinder. The first pushing block is longer than the second pushing block.

[0012] A bending machine for multi-power dragging U, as described above, is characterized in that: a first longitudinal guide rail extending longitudinally is provided on the follower platform, and a dragging U base frame guide groove that can slide and is clamped on the first longitudinal guide rail is provided on the dragging U base frame. The dragging U moving mechanism includes a dragging U moving motor provided on the follower platform, a dragging U base frame nut seat is provided on the dragging U base frame, and a dragging U base frame power lead screw that is driven by the dragging U moving motor and inserted into the dragging U base frame nut seat is rotatably provided on the follower platform.

[0013] A bending machine for multi-power dragging U, as described above, is characterized in that: guide posts are provided on the bottom dragging U plate, guide grooves extending toward the workpiece side for the guide posts to penetrate are provided on the moving dragging U plate, and power mechanisms that can drive the moving dragging U plate to abut against the upper end surface or the lower end surface of the workpiece U-shaped tube when the moving dragging U plate moves toward the workpiece side are respectively provided between the bottom dragging U plate and the moving dragging U plate and between adjacent moving dragging U plates. The power mechanism is an inclined surface provided on the end surface of the bottom dragging U plate or the end surface of the moving dragging U plate, and the inclined surface slopes upward toward the workpiece side.

[0014] A bending machine for multi-power dragging U, as described above, is characterized in that: a lifting plate is provided at the bottom of the follower platform, a lifting nut sleeve is provided on the machine frame, a lifting screw rod penetrating through the lifting nut sleeve is provided at the bottom of the lifting plate, the lifting drive mechanism includes a platform lifting drive motor for driving the lifting nut sleeve to rotate, a platform nut seat and a longitudinally arranged platform guide rail are provided on the follower platform, a platform guide groove that can slide and is clamped on the platform guide rail is provided on the lifting plate, a longitudinal screw rod inserted into the platform nut seat is rotatably provided on the lifting plate, and a platform longitudinal moving motor for driving the longitudinal screw rod to rotate is further provided on the lifting plate.

[0015] A bending machine for multi-power dragging U, as described above, is characterized in that: the bending mechanism includes a roller frame provided on the machine frame, a rotating shaft and a rotating drive motor for driving the roller frame to rotate are provided on the roller frame, a guide block for guiding the bending of the workpiece and an upper clamping plate driven to rotate by the rotating shaft are sleeved outside the rotating shaft, a connecting rod is provided on the upper clamping plate, a lower clamping plate that can relatively move on the connecting rod and can clamp the workpiece with the upper clamping plate is provided, and a clamping plate pushing air cylinder for pushing the lower clamping plate to move is provided on the lower clamping plate.

[0016] A bending machine for multi-power dragging U as described above, characterized in that: a pushing mechanism capable of pushing the workpiece is provided on the bending mechanism, and the pushing mechanism includes a pushing frame longitudinally movable on the bending mechanism and a pushing power mechanism capable of driving the pushing frame to move longitudinally. A pushing block capable of pushing the workpiece is rotatably provided on the pushing frame. The pushing block is provided with a first positioning fork and a second positioning fork, and the first positioning fork is longer than the second positioning fork.

[0017] A bending machine for multi-power dragging U as described above, characterized in that: a longitudinally arranged pushing guide rail is provided on the bending mechanism. A pushing nut seat and a pushing guide groove slidably clamped on the pushing guide rail are provided on the pushing frame. A pushing screw rod inserted into the pushing nut seat is rotatably provided on the bending mechanism. The pushing power mechanism includes a pushing power motor for driving the pushing screw rod to rotate; the pushing frame includes a lower frame movably provided on the pushing guide rail. A lifting cylinder is provided on the lower frame, and an upper frame lifted by the lifting cylinder is provided on the lifting cylinder. The pushing block is provided on the upper frame.

[0018] A bending machine for multi-power dragging U as described above, characterized in that: the clamping mechanism includes a clamping base frame slidable on the machine frame. A clamping base frame power motor for driving the clamping base frame to move longitudinally is provided on the machine frame. A clamping frame and a clamping frame driving mechanism for driving the clamping frame to move up and down are movably provided on the clamping base frame. A clamping power cylinder is provided on the clamping frame, and an upper clamping plate for pushing and clamping the workpiece with the clamping frame by the clamping power cylinder is provided on the clamping power cylinder.

[0019] The beneficial effects of the present invention are as follows: a dragging U assembly is arranged on the follow-up platform, and the bottom dragging U plate and the moving dragging U plate support different layers of workpiece U-shaped tubes. In this way, when bending, the workpiece U-shaped tube relies on the support of the bottom dragging U plate and the moving dragging U plate to be stressed, and the workpiece is not easily deformed normally. The moving dragging U plate is movable, so the moving dragging U plate will not interfere with the workpiece, and there is no need for a lifting mechanism to lift the dragging U assembly, which is convenient to use and has high working efficiency; the first push block on the first pushing cylinder is longer than the second push block on the second pushing cylinder, and they act respectively during the first bending and the second bending. In this way, the stroke of the moving dragging U plate can be controlled to achieve precise control and adapt to the layer difference of different workpiece ends; the pushing block is provided with a first positioning fork and a second positioning fork, and the lengths of the first positioning fork and the second positioning fork are different. In this way, workpieces of different sizes can be pushed, and the maximum limit size and the minimum limit size are achieved by rotating the pushing block. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective view of the present invention;

[0021] Figure 2 is a rear view of the present invention;

[0022] Figure 3 is a perspective view of the follow-up platform of the present invention;

[0023] Figure 4 is a bottom view of the follow-up platform of the present invention;

[0024] Figure 5 is an exploded view of the follow-up platform of the present invention;

[0025] Figure 6 is a perspective view of the components of the follow-up platform of the present invention;

[0026] Figure 7 is a perspective view of the bending mechanism of the present invention;

[0027] Figure 8 is a perspective view of the pusher frame of the present invention. Detailed implementation manners

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners:

[0029] As Figures 1 to 8 shown, a bending machine for multi-power towing U is characterized by comprising:

[0030] a frame 1;

[0031] a bending mechanism 2, which is arranged on the frame 1 and can bend workpieces;

[0032] a clamping mechanism 3, which is movably arranged on the frame 1 and is relatively spaced apart from the bending mechanism 2. The clamping mechanism 3 can move up and down and longitudinally. The direction from the clamping mechanism 3 to the bending mechanism 2 is defined as the longitudinal direction, and the direction perpendicular to the longitudinal direction is defined as the transverse direction;

[0033] a follow-up platform 4, which is longitudinally slidably arranged on the frame 1. The follow-up platform 4 is arranged between the bending mechanism 2 and the clamping mechanism 3. An elevating drive mechanism 5 for driving the follow-up platform 4 to lift is arranged on the frame 1;

[0034] The dragging U component 6 is movably arranged on the follower platform 4. The dragging U component 6 moves towards the workpiece side. The dragging U component 6 includes a bottom dragging U plate 61 that can support the U-shaped tube of the workpiece, and at least one layer of moving dragging U plates 62 stacked on the bottom dragging U plate 61. Guide posts 64 are arranged on the bottom dragging U plate 61, and guide grooves 65 extending towards the workpiece side for the guide posts 64 to penetrate are arranged on the moving dragging U plates 62. The bottom dragging U plate 61 and the moving dragging U plates 62 can respectively support the U-shaped tubes of the workpiece at different layers. The moving dragging U plates 62 can move relative to the bottom dragging U plate 61 to support the U-shaped tube of the workpiece. A dragging U moving mechanism 47 for driving the bottom dragging U plate 61 to approach or move away from the workpiece is arranged on the follower platform 4. At least one dragging U power device 63 corresponding one-to-one with the moving dragging U plates 62 is arranged on the dragging U component 6 and can push the moving dragging U plates 62 to insert into the U-shaped tube of the workpiece. The dragging U moving mechanism 47 drives the bottom dragging U plate 61 to approach the workpiece. Since the moving dragging U plates 62 are stacked on the bottom dragging U plate 61, the bottom dragging U plate 61 and the moving dragging U plates 62 can move towards the workpiece together. The dragging U power device 63 independently pushes the moving dragging U plates 62 to approach the workpiece. When multiple moving dragging U plates 62 are arranged, at least one dragging U power device 63 pushes one moving dragging U plate 62, that is, each moving dragging U plate 62 has at least one dragging U power device 63 to drive it.

[0035] In this embodiment, there is one moving dragging U plate 62. The dragging U component 6 further includes a dragging U base frame 60 slidably arranged on the follower platform 4, and the bottom dragging U plate 61 is fixed on the dragging U base frame 60. The dragging U power device 63 includes a first pushing cylinder 67 and a second pushing cylinder 68 arranged on the dragging U base frame 60. A first pushing block 69 capable of pushing the moving dragging U plate 62 is arranged on the cylinder rod of the first pushing cylinder 67, and a second pushing block 70 capable of pushing the moving dragging U plate 62 is arranged on the cylinder rod of the second pushing cylinder 68. The first pushing block 69 is longer than the second pushing block 70. The two cylinders are started respectively during the first bending and the second bending, which is convenient for precise control. A first longitudinal guide rail 41 extending longitudinally is arranged on the follower platform 4. A dragging U base frame guide groove 72 slidably clamped on the first longitudinal guide rail 41 is arranged on the dragging U base frame 60. The dragging U moving mechanism 47 includes a dragging U moving motor 71 arranged on the follower platform 4. A dragging U base frame nut seat 73 is arranged on the dragging U base frame 60. A dragging U base frame power lead screw 74 driven by the dragging U moving motor 71 and inserted into the dragging U base frame nut seat 73 is rotatably arranged on the follower platform 4. A driving wheel is arranged on the motor shaft of the dragging U moving motor 71, and a driven wheel is arranged on the dragging U base frame power lead screw 74. The driving wheel and the driven wheel are driven by a conveyor belt or a chain.

[0036] A lifting plate 40 is provided at the bottom of the follow-up platform 4. A lifting nut sleeve 11 is provided on the frame 1. A lifting screw rod 42 is provided at the bottom of the lifting plate 40 and is inserted through the lifting nut sleeve 11. The lifting nut sleeve 11 is axially positioned and can only rotate. The lifting drive mechanism 5 includes a platform lifting drive motor 51 for driving the rotation of the lifting nut sleeve 11. A transmission gear can be provided on the lifting nut sleeve 11, and a driving gear can be provided on the motor shaft of the platform lifting drive motor 51. The transmission gear and the driving gear are driven by a chain wheel. A platform nut seat and a longitudinally arranged platform guide rail 43 are provided on the follow-up platform 4. A platform guide groove 44 that can be slidably clamped on the platform guide rail 43 is provided on the lifting plate 40. A longitudinally arranged screw rod 45 that is rotatably provided on the lifting plate 40 and is inserted into the platform nut seat is provided on the lifting plate 40. A platform longitudinal movement motor 46 for driving the rotation of the longitudinally arranged screw rod 45 is further provided on the lifting plate 40. A runner can be provided on the longitudinally arranged screw rod 45, and a driving wheel can be provided on the motor shaft of the platform longitudinal movement motor 46. The driving wheel can drive the runner through a conveyor belt.

[0037] A power mechanism is provided between the bottom drag U-shaped plate 61 and the movable drag U-shaped plate 62 and between adjacent movable drag U-shaped plates 62. When the movable drag U-shaped plate 62 moves towards the workpiece side, the power mechanism can drive the movable drag U-shaped plate 62 to abut against the upper or lower end surface of the workpiece U-shaped tube. The power mechanism enables the movable drag U-shaped plate 62 to move towards the bottom surface of the workpiece U-shaped tube, so as to abut against or support the end of the workpiece U-shaped tube. The power mechanism is an inclined surface provided on the end surface of the bottom drag U-shaped plate 61 or the end surface of the movable drag U-shaped plate 62. The inclined surface slopes upward towards the workpiece side. In this way, when the movable drag U-shaped plate 62 moves relatively, through the guiding action of the inclined surface, one side of the movable drag U-shaped plate 62 moves upward, thereby upwardly supporting the workpiece U-shaped tube.

[0038] The bending mechanism 2 includes a rotating rod frame 21 provided on the frame 1. On the rotating rod frame 21, there are a rotating shaft 22 and a rotating drive motor 13 for driving the rotation of the rotating rod frame 21. A guide block 20 for guiding the bending of the workpiece and an upper clamping plate 23 driven by the rotating shaft 22 to rotate are sleeved outside the rotating shaft 22. The guide block 20 is an arc block. A connecting rod 24 is provided on the upper clamping plate 23. A lower clamping plate 25 capable of clamping the workpiece with the upper clamping plate 23 is provided on the connecting rod 24 in a relatively movable manner. A clamping plate pushing air cylinder 26 for pushing the lower clamping plate 25 to move is provided on the lower clamping plate 25. A feeding mechanism 8 for pushing the workpiece is provided on the bending mechanism 2. The feeding mechanism 8 includes a feeding frame 81 slidably provided longitudinally on the bending mechanism 2 and a feeding power mechanism 82 for driving the longitudinal movement of the feeding frame 81. A pushing block 83 for pushing the workpiece is rotatably provided on the feeding frame 81. A first positioning fork 84 and a second positioning fork 85 are provided on the pushing block 83, and the first positioning fork 84 is longer than the second positioning fork 85. A longitudinally arranged feeding guide rail 27 is provided on the bending mechanism 2. A feeding nut seat 86 and a feeding guide groove 87 slidably clamped on the feeding guide rail 27 are provided on the feeding frame 81. A feeding screw 88 inserted into the feeding nut seat 86 is rotatably provided on the bending mechanism 2. The feeding power mechanism 82 includes a feeding power motor 89 for driving the rotation of the feeding screw 88, and the feeding power motor 89 and the feeding screw 88 can be driven by a synchronous belt. The feeding frame 81 includes a lower frame 90 movably provided on the feeding guide rail 27. A lifting air cylinder 91 is provided on the lower frame 90. An upper frame 92 pushed by the lifting air cylinder 91 is provided on the lifting air cylinder 91. The pushing block 83 is provided on the upper frame 92 to prevent interference between the pushing block 83 and the workpiece. After the pushing block 83 finishes pushing the material, it can be lowered.

[0039] The clamping mechanism 3 includes a clamping base frame 31 slidable on the frame 1. A longitudinally arranged frame guide rail is provided on the frame 1. A clamping base frame machine guide groove slidably provided on the frame guide rail is provided on the clamping base frame 31. A clamping base frame power motor 12 for driving the longitudinal movement of the clamping base frame 31 is provided on the frame 1. A nut seat is provided on the clamping base frame 31, and the clamping base frame power motor 12 drives the nut seat by driving a screw rod. A clamping frame 32 is provided on the clamping base frame 31 in a vertically movable manner, and a clamping frame driving mechanism 33 for driving the vertical movement of the clamping frame 32 is provided. A nut seat is provided on the clamping frame 32, and the clamping frame driving mechanism 33 drives a lead screw to drive the nut seat. A clamping power air cylinder 35 is provided on the clamping frame 32. An upper clamping plate 34 for pushing and clamping the workpiece with the clamping frame 32 by the clamping power air cylinder 35 is provided on the clamping power air cylinder 35.

[0040] During operation, other feeding mechanisms of the robot can be used to place the workpiece on the follower platform 4. The pusher mechanism 8 pushes the workpiece into place. The drag U moving mechanism 47 drives the bottom drag U plate 61 to lean against a layer of U-shaped tubes. The bottom drag U plate 61 supports and drags the U-shaped tubes. The first pushing cylinder 67 is activated to drive the moving drag U plate 62 to lean against another layer of U-shaped tubes. The moving drag U plate 62 supports and drags the U-shaped tubes. The bending mechanism 2 is activated to clamp the workpiece and perform bending. After bending, the drag U assembly 6 retracts, the follower platform 4 descends, the clamping mechanism 3 is activated to move longitudinally and clamp the workpiece, the bending mechanism 2 retracts, and the clamping mechanism 3 moves longitudinally to feed the workpiece forward. The follower platform 4 rises to support the workpiece, and the drag U assembly 6 also repeats the action. Only the second pushing cylinder 68 pushes the moving drag U plate 62, and the bending mechanism 2 bends again.

Claims

1. A bending machine for multi-power towing U, characterized in that, Comprising: A frame (1); A bending mechanism (2) which is arranged on the frame (1) and can bend workpieces; A follow-up platform (4) which is longitudinally slidably arranged on the frame (1), and a lifting drive mechanism (5) for driving the follow-up platform (4) to lift is arranged on the frame (1); A dragging U assembly (6) which is movably arranged on the follow-up platform (4), the dragging U assembly (6) includes a bottom dragging U plate (61) capable of supporting the bottom of the U-shaped tube of the workpiece, and at least one layer of movable dragging U plates (62) stacked on the bottom dragging U plate (61), the movable dragging U plates (62) can move relative to the bottom dragging U plate (61) to support the U-shaped tube of the workpiece, a dragging U moving mechanism (47) for driving the bottom dragging U plate (61) to approach or move away from the workpiece is arranged on the follow-up platform (4), and at least one dragging U power device (63) corresponding to the movable dragging U plates (62) one by one and capable of pushing the movable dragging U plates (62) into the U-shaped tube of the workpiece is arranged on the dragging U assembly (6); the dragging U assembly (6) further includes a dragging U base frame (60) slidably arranged on the follow-up platform (4), and the bottom dragging U plate (61) is fixed on the dragging U base frame (60); there is one movable dragging U plate (62), the dragging U power device (63) includes a first pushing cylinder (67) and a second pushing cylinder (68) arranged on the dragging U base frame (60), a first pushing block (69) capable of pushing the movable dragging U plate (62) is arranged on the cylinder rod of the first pushing cylinder (67), a second pushing block (70) capable of pushing the movable dragging U plate (62) is arranged on the cylinder rod of the second pushing cylinder (68), the first pushing block (69) is longer than the second pushing block (70), and the first pushing cylinder (67) and the second pushing cylinder (68) are started during the first bending and the second bending respectively; a pushing material mechanism (8) capable of pushing the workpiece is arranged on the bending mechanism (2), the pushing material mechanism (8) includes a pushing material frame (81) longitudinally movably arranged on the bending mechanism (2), a pushing material power mechanism (82) capable of driving the pushing material frame (81) to longitudinally move, a pushing block (83) capable of pushing the workpiece is rotatably arranged on the pushing material frame (81), a first positioning fork (84) and a second positioning fork (85) are arranged on the pushing block (83), and the first positioning fork (84) is longer than the second positioning fork (85).

2. The bending machine for multi-power towing U according to claim 1, wherein: A first longitudinal guide rail (41) extending longitudinally is arranged on the follow-up platform (4), a dragging U base frame guide groove (72) slidably clamped on the first longitudinal guide rail (41) is arranged on the dragging U base frame (60), the dragging U moving mechanism (47) includes a dragging U moving motor (71) arranged on the follow-up platform (4), a dragging U base frame nut seat (73) is arranged on the dragging U base frame (60), and a dragging U base frame power lead screw (74) driven by the dragging U moving motor (71) and inserted into the dragging U base frame nut seat (73) is rotatably arranged on the follow-up platform (4).

3. A bending machine for a multi-power tow U according to claim 1, characterized in that: The bottom drag U-shaped plate (61) is provided with guide posts (64), the moving drag U-shaped plate (62) is provided with a guide groove (65) extending towards the workpiece side for the guide posts (64) to penetrate, and between the bottom drag U-shaped plate (61) and the moving drag U-shaped plate (62) and between adjacent moving drag U-shaped plates (62), there are respectively power mechanisms that can drive the moving drag U-shaped plate (62) to abut against the upper end face or the lower end face of the workpiece U-shaped tube when the moving drag U-shaped plate (62) moves towards the workpiece side. The power mechanism is an inclined surface provided on the end face of the bottom drag U-shaped plate (61) or the end face of the moving drag U-shaped plate (62), and the inclined surface slopes upwards towards the workpiece side.

4. A bending machine for a multi-power tow U according to claim 1, characterized in that: The bottom of the follower platform (4) is provided with a lifting plate (40), the frame (1) is provided with a lifting nut sleeve (11), the bottom of the lifting plate (40) is provided with a lifting screw rod (42) sleeved on the lifting nut sleeve (11), the lifting drive mechanism (5) includes a platform lifting drive motor (51) that drives the lifting nut sleeve (11) to rotate, the follower platform (4) is provided with a platform nut seat and a longitudinally arranged platform guide rail (43), the lifting plate (40) is provided with a platform guide groove (44) that can be slidably clamped on the platform guide rail (43), the lifting plate (40) is rotatably provided with a longitudinal screw rod (45) inserted into the platform nut seat, and the lifting plate (40) is further provided with a platform longitudinal movement motor (46) that drives the longitudinal screw rod (45) to rotate.

5. A bending machine for a multi-power tow U according to claim 1, characterized in that: The bending mechanism (2) includes a rotating rod frame (21) provided on the frame (1), a rotating drive motor (13) that drives the rotating rod frame (21) to rotate, the rotating rod frame (21) is provided with a rotating shaft (22), a rotating drive motor (13) that drives the rotating rod frame (21) to rotate, a guide block (20) for guiding the bending of the workpiece is sleeved outside the rotating shaft (22), and an upper clamping plate (23) driven by the rotating shaft (22) to rotate. The upper clamping plate (23) is provided with a connecting rod (24), and a lower clamping plate (25) that can relatively move on the connecting rod (24) and can clamp the workpiece with the upper clamping plate (23) is provided. The lower clamping plate (25) is provided with a clamping plate pushing cylinder (26) that can push the lower clamping plate (25) to move.

6. A bending machine for a multi-powered tug U according to claim 1, characterized in that: The bending mechanism (2) is provided with a longitudinally arranged material pushing guide rail (27), the material pushing frame (81) is provided with a material pushing nut seat (86) and a material pushing guide groove (87) that can be slidably clamped on the material pushing guide rail (27), the bending mechanism (2) is rotatably provided with a material pushing screw rod (88) inserted into the material pushing nut seat (86), and the material pushing power mechanism (82) includes a material pushing power motor (89) that drives the material pushing screw rod (88) to rotate; the material pushing frame (81) includes a lower frame (90) that can move on the material pushing guide rail (27), a lifting cylinder (91) is provided on the lower frame (90), an upper frame (92) pushed and lifted by the lifting cylinder (91) is provided on the lifting cylinder (91), and the pushing block (83) is provided on the upper frame (92).

7. A bending machine for a multi-power tow U according to claim 1, characterized in that: A clamping mechanism (3) which is movably arranged on the described frame (1) and is relatively spaced apart from the bending mechanism (2) is provided. The follow-up platform (4) is arranged between the bending mechanism (2) and the clamping mechanism (3). The clamping mechanism (3) includes a clamping base frame (31) capable of sliding on the frame (1). A clamping base frame power motor (12) for driving the longitudinal movement of the clamping base frame (31) is provided on the frame (1). A clamping frame (32) which can move up and down and a clamping frame driving mechanism (33) for driving the up and down movement of the clamping frame (32) are provided on the clamping base frame (31). A clamping power cylinder (35) is provided on the clamping frame (32). An upper clamping plate (34) which is pushed by the clamping power cylinder (35) to clamp a workpiece with the clamping frame (32) is provided on the clamping power cylinder (35).

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