Bending machine with bending angle adjusting function

Abstract

The invention discloses a bending machine with a bending angle adjusting function, and relates to the technical field of bending machines, the bending machine comprises a bending machine main body of a rectangular frame structure, and the rear side of the bending machine main body is rotatably connected with a workbench used for providing a main platform for bending operation; supporting frames used for fixing and supporting other components are fixedly connected to the two sides of the bending machine body, pressing handles used for adjusting the bending angle of the bending machine body are rotationally connected to the two sides of the supporting frames, and a bent knife used for increasing the machining bending strength is fixedly connected to the upper surface of the workbench. A bending angle guide mechanism is arranged at the bottom end of the workbench, bending extrusion friction mechanisms are arranged on the two sides of the bent knife, a centering fastening mechanism is arranged on the outer wall of the workbench, a worm gear table and a worm are matched with each other, automatic bending angle adjustment can be achieved through the bending angle guide mechanism, complexity and errors of manual operation are reduced, and the working efficiency is improved. And the production efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of bending machines, and in particular to a bending machine with a bending angle adjustment function. Background Art

[0002] Bending machines are mainly used for bending metal sheets. They are suitable for metal sheets of various specifications and materials. Bending machines are widely used in the manufacturing industry, such as automobile manufacturing, aerospace, electronic equipment, home appliances, construction and other industries. In the manufacturing process, metal sheets often need to be bent to form the required parts or components, and metal processing plants usually need to mass-produce metal components of various specifications and shapes. Bending machines can help processing plants efficiently complete the bending processing needs of metal sheets: 1. In the prior art, bending machines are usually used to bend the plates to be processed. However, when using the bending machines, most of the plates to be processed are manually held and contacted with the bending machines for extrusion. Due to the instability of manual operation, it is impossible to ensure that a consistent bending angle and shape can be obtained each time the processing is performed, resulting in unstable product quality. At the same time, it is difficult to control the accuracy of the force and position during manual operation, and processing errors are prone to occur, which affects the accuracy and size requirements of the plates. Secondly, during the contact and extrusion process between the handheld plates and the bending machines, the operators need to be in close contact with the machines and equipment, which poses a risk of injury, especially for large or high-speed bending machines. Finally, the handheld plate processing requires the operators to maintain a posture for a long time, and requires a lot of force for extrusion, which can easily cause labor fatigue and physical discomfort.

[0003] 2. At the same time, when the technical operator holds the plate to be processed for bending processing, the operator needs to fix the plate in position directly with his hands, which may easily cause hand injuries or pinching. In addition, hand-held processing of the plate requires more manpower and time, and the production efficiency of the automated equipment cannot be achieved, which reduces the production efficiency and output. In addition, it is difficult to control the bending angle of the plate when manually holding the plate to be processed. It is difficult to achieve precise angle control of the bent plate by manual operation, which may easily lead to inaccurate bending angles of the product.

[0004] In view of this, the present invention proposes a bending machine with a bending angle adjustment function to compensate for and improve the deficiencies of the prior art. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a bending machine with a bending angle adjustment function to solve the technical problems raised in the above background technology.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a bending machine with a bending angle adjustment function, comprising a bending machine body with a rectangular frame structure, a workbench for providing a main platform for bending operation is rotatably connected to the rear side of the bending machine body, a support frame for fixing and supporting other components is fixedly connected to both sides of the bending machine body, a pressure handle for adjusting the bending angle of the bending machine body is rotatably connected to the upper surface of the workbench for increasing the processing bending force, a rear base for providing machine support and stability is fixedly connected to one side of the workbench, an angle guide mechanism is arranged at the bottom end of the workbench, bending and squeezing friction mechanisms are arranged at both sides of the bending knife, and a centering and fastening mechanism is arranged on the outer wall of the workbench; The angle guide mechanism is used to accurately control and adjust the bending angle of the metal material; The bending and squeezing friction mechanism is used to apply friction force to the raw material at the bending angle to keep the raw material stable during the bending process; The centering and fastening mechanism is used to ensure that the workpiece always maintains a correct position during the bending process.

[0007] Furthermore, the angle guide mechanism includes a support plate fixedly installed on the bottom end of the workbench, and two support plates are symmetrically arranged around the center of the workbench. A worm is rotatably connected to the interior of the two support plates, and a handle is fixedly connected to the outer wall of the end of the worm away from the support plate. A worm gear table is arranged at the lower end of the two support plates, a pointer is fixedly connected to the outer wall of the two support plates, and an adapter plate is fixedly connected to the outer wall of the upper end of the two support plates.

[0008] Furthermore, one end of the two worm gears away from the support plate is fixedly connected to the upper surface of the rear base, the worm gears and the worm are meshed with each other to form a meshing transmission, and the support plate is rotatably connected to the outer wall of the worm gear.

[0009] Furthermore, a plurality of scales are fixedly mounted on the outer wall of the worm gear stage, the shape of the worm gear stage is semicircular, and the sides of the two adapter plates away from the support plate are attached to the lower end of the support frame.

[0010] Furthermore, the bending and squeezing friction mechanism includes an external connecting plate fixedly connected to an outer wall of one side of the rear base, the outer wall of the top end of the external connecting plate away from the rear base is rotatably connected to a rotating plate, a fixed shaft is provided inside the rotating plate, an outer wall of one end of the fixed shaft away from the rotating plate is fixedly connected to a spring, an end of the fixed shaft away from the spring is fixedly connected to a slide plate, an end of the slide plate away from the spring is fixedly connected to a buckle, an outer wall of one side of the buckle away from the slide plate is rotatably connected to a connecting rod, an outer wall of one end of the connecting rod away from the buckle is fixedly connected to a moving block, an outer wall of the moving block away from the connecting rod is provided with a square plate, an outer wall of one side of the rotating plate away from the connecting rod is rotatably connected to a friction disk, and an outer wall of one side of the rotating plate abuts against a lever.

[0011] Furthermore, a symmetrical square groove is opened inside the rotating plate, the fixed shaft passes through and is slidably connected to the symmetrical square groove opened inside the rotating plate, the sliding plate is slidably connected to the symmetrical square groove opened inside the rotating plate, and the end of the lever away from the rotating plate is fixedly connected to the top outer wall of the adapter plate.

[0012] Furthermore, one end of the square plate away from the moving block is fixedly connected to the top outer wall of the bending machine body, an arc groove is opened inside the square plate, and the moving block is slidably connected in the arc groove opened inside the square plate. The outer wall of one end of the friction plate away from the rotating plate initially contacts the surface of the workbench.

[0013] Furthermore, the centering and fastening mechanism includes a fixing rod fixedly connected to the outer wall, a steering wheel is provided on the outer wall at one end of the fixing rod away from the steering wheel, a fixing block is fixedly connected to the outer wall on the side of the steering wheel away from the fixing rod, an end of the fixing block away from the steering wheel is fixedly connected to the upper surface of the rear base, a threaded rod is fixedly connected to the end of the steering wheel away from the fixing block, a movable ring is provided on the outer wall of the threaded rod, a torsion spring wire is fixedly connected to the outer wall of the movable ring, an obstacle column is fixedly connected to the end of the torsion spring wire away from the movable ring, a rotating shaft is fixedly connected to the end of the obstacle column away from the torsion spring wire, a sleeve plate is provided on the outer wall of the rotating shaft, a clamping shaft is symmetrically penetrated and slidably connected to the outer wall of the rotating shaft away from the obstacle column, and two clamping shafts are fixedly connected to a splint at one end away from the rotating shaft.

[0014] Furthermore, the steering wheel is rotatably connected to the inner wall of one end of the fixed block away from the rear base, the initial position of the fixed rod is clamped in the gap of the outer wall of the steering wheel, the movable ring is slidably connected to the outer wall of the threaded rod and forms a ball screw structure, the torsion spring wire is wrapped around the outer wall of the obstacle column, the obstacle column is fixedly connected to the eccentric part of the outer wall of the rotating shaft, the outer wall of the sleeve plate on one side away from the rotating shaft is fixedly connected to the outer wall of the workbench, and the rotating shaft passes through and is rotatably connected to the inner wall of the sleeve plate.

[0015] Furthermore, an oblique arc groove is symmetrically fixed inside one end of the rotating shaft close to the workbench, and the two clamping shafts are respectively slidably connected to the oblique arc grooves symmetrically fixed inside one end of the rotating shaft close to the workbench. The initial positions of the clamping plate and the clamping shaft are at the apex of one end of the oblique arc groove symmetrically fixed inside one end of the rotating shaft close to the workbench, the inside of the clamping plate is plugged into the outer wall of the workbench, and long-mouth grooves are opened on both side outer walls of the sleeve plate, and the two clamping plates are slidably connected to the long-mouth grooves opened on both side outer walls of the sleeve plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention utilizes the worm gear and the worm to cooperate with each other, and the angle guide mechanism can realize automatic bending angle adjustment, which reduces the complexity and error of manual operation and can improve production efficiency. Through precise angle control, the scrap rate caused by bending angle deviation can be reduced. The stable and accurate bending angle can ensure product quality and reduce the generation of defective products. The angle guide mechanism can flexibly adjust and switch different bending angles to adapt to different products and processing requirements, thereby improving the versatility and applicability of the bending machine. In addition, through the angle guide mechanism, high-precision and consistent bending processing can be achieved, ensuring the stability of the geometric size and appearance quality of the product. (2) The present invention utilizes the friction disk and the external plate to cooperate with each other, and by applying friction to the raw material at the bend, it helps the raw material to remain stable during the bending process. This friction can ensure that the raw material can be bent according to the predetermined path and angle during bending, thereby improving the accuracy and consistency of the bending; through the bend friction and extrusion, the bend-extrusion friction mechanism can more effectively control the deformation of the raw material during the bending process. It can help the raw material better adapt to the shape of the mold and reduce problems such as wrinkles, cracks or deformation that may occur during the bending process. At the same time, this mechanism can also ensure that the workpiece after bending has better surface quality and dimensional accuracy; in the bending process, the plasticity of the raw material is a key factor. Through the bend friction and extrusion, the mechanism can increase the plastic deformation capacity of the raw material, making it easier to bend under the action of the mold. This helps to reduce the force required for bending and reduce the risk of bending failure or workpiece damage caused by insufficient material plasticity; during the bending process, the sliding or instability of the raw material may cause accidental injury to the operator. By increasing the bend friction and squeezing the raw material mechanism, the raw material can be more effectively fixed and the possibility of its sliding can be reduced, thereby improving the safety of the operation process; (3) The present invention utilizes the clamping plate and the steering wheel to cooperate with each other, and the centering and fastening mechanism can firmly fix the workpiece to prevent the workpiece from accidentally slipping or escaping from the clamping device during bending, which helps to improve the safety of the operator and reduce the risk of accidental injury. In addition, the centering and fastening mechanism can ensure that the position and posture of the workpiece during the bending process remain consistent, thereby improving the accuracy and repeatability of the bending process. The centering and fastening mechanism can firmly fix the workpiece and maintain its stable position, so that the results of each bending are more consistent. The stable centering and fastening mechanism can ensure that the position and posture of the workpiece during the bending process are accurate and stable, reducing the bending angle error caused by the movement or deformation of the workpiece, thereby reducing the scrap rate. In addition, the use of the centering and fastening mechanism can reduce the physical labor of the operator and avoid long-term continuous repetitive operations, thereby reducing labor intensity; BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention; Figure 2 It is a schematic diagram of a partial three-dimensional structure of the corner guide mechanism of the present invention; Figure 3 It is a partial three-dimensional structural schematic diagram of the position relationship between the worm gear and the worm of the present invention; Figure 4 It is a schematic diagram of a partial three-dimensional structure of the support plate and the position relationship of the support plate of the present invention; Figure 5 For the present invention Figure 4 A is a partial enlarged schematic diagram of the three-dimensional structure; Figure 6 It is a partial three-dimensional structural schematic diagram of the position relationship between the lever and the rotating plate of the present invention; Figure 7 It is a partial three-dimensional structural schematic diagram of the position relationship between the connecting rod and the moving block of the present invention; Figure 8 It is a partial three-dimensional structural schematic diagram of the position relationship between the fixing rod and the adapter plate of the present invention; Fig. 9 It is a partial three-dimensional structural schematic diagram of the position relationship between the rotating shaft and the sleeve plate of the present invention; Fig.10 For the present invention Fig. 9 Schematic diagram of the local three-dimensional enlarged structure at point B in the middle.

[0018] The numbers in the figure are: 1. bending machine body; 11. workbench; 12. support frame; 13. pressure handle; 14. curved knife; 15. rear base; 2. angle guide mechanism; 21. support plate; 22. worm; 23. turning handle; 24. worm gear platform; 25. pointer; 26. adapter plate; 3. bending and squeezing friction mechanism; 31. external plate; 32. turning plate; 33. fixed shaft; 34. spring; 35. slide plate; 36. buckle; 37. connecting rod; 38. moving block; 39. square plate; 310. friction disk; 311. lever; 4. centering and fastening mechanism; 41. fixed rod; 42. fixed block; 43. steering wheel; 44. threaded rod; 45. moving ring; 46. torsion spring line; 47. obstacle column; 48. rotating shaft; 49. sleeve plate; 410. clamping shaft; 411. splint. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention; Embodiments of the present invention A bending machine with bending angle adjustment function, reference Figure 1 As shown, it includes a bending machine body 1 of a rectangular frame structure, a workbench 11 for providing a main platform for bending operation is rotatably connected to the rear side of the bending machine body 1, support frames 12 for fixing and supporting other components are fixedly connected to both sides of the bending machine body 1, and pressure handles 13 for adjusting the bending angle of the bending machine body 1 are rotatably connected to both sides of the support frame 12, a curved knife 14 for increasing the bending strength of the bending machine is fixedly connected to the upper surface of the workbench 11, and a rear base 15 for providing machine support and stability is fixedly connected to one side of the workbench 11; In view of the above-mentioned bending machine with bending angle adjustment function, it can be specifically implemented as follows: The bottom end of the workbench 11 is provided with an angle guide mechanism 2, the two sides of the curved knife 14 are provided with a bending and squeezing friction mechanism 3, and the outer wall of the workbench 11 is provided with a centering and fastening mechanism 4; refer to Figure 2 As shown, the bending angle guide mechanism 2 is used to accurately control and adjust the bending angle of the metal material; refer to Figure 3As shown, the angle guide mechanism 2 includes a support plate 21 fixedly mounted on the bottom end of the workbench 11, and two support plates 21 are symmetrically arranged around the center of the workbench 11. A worm 22 is rotatably connected to the inside of the two support plates 21, and a handle 23 is fixedly connected to the outer wall of one end of the worm 22 away from the support plate 21. A worm gear platform 24 is arranged at the lower end of the two support plates 21, and a pointer 25 is fixedly connected to the outer wall of the two support plates 21. An adapter plate 26 is fixedly connected to the outer wall of the upper end of the two support plates 21. refer to Figure 3 As shown, one end of the two worm gears 24 away from the support plate 21 is fixedly connected to the upper surface of the rear base 15, the worm gears 24 and the worm 22 mesh with each other and form a meshing transmission, and the support plate 21 is rotatably connected to the outer wall of the worm gears 24; refer to Figures 4 to 5 As shown, a plurality of scales are fixedly mounted on the outer wall of the worm gear stage 24. The shape of the worm gear stage 24 is semicircular, and the two adapter plates 26 are attached to the lower end of the support frame 12 on the side away from the support plate 21; Summary 1: Comparison with the prior art Compared with the prior art, the bending process is achieved by manually holding the plate to be processed and squeezing it with the curved knife 14. The present mechanism realizes that the bending process of the plate to be processed can be achieved by the displacement of the support plate 21 on the worm gear table 24. The deflection displacement of the support plate 21 on the worm gear table 24 can synchronously drive the pointer 25 to point to the scale with different engraved lines. The angle guide mechanism 2 can realize automatic bending angle adjustment, reduce the complexity and error of manual operation, and improve production efficiency. Through precise angle control, the scrap rate caused by bending angle deviation can be reduced. Stable and accurate bending angles can ensure product quality and reduce the generation of defective products. The angle guide mechanism 2 can flexibly adjust and switch different bending angles to adapt to different products and processing requirements, improve the versatility and applicability of the bending machine, and through the angle guide mechanism 2, high-precision and consistent bending processing can be achieved, ensuring the stability of the product's geometric size and appearance quality.

[0020] refer to Figure 6 As shown, the bending and squeezing friction mechanism 3 is used to apply friction force to the raw material at the bending angle to keep the raw material stable during the bending process; refer to Figure 6As shown, the bending and squeezing friction mechanism 3 includes an external connecting plate 31 fixedly connected to the outer wall of one side of the rear base 15, the outer wall of the top end of the external connecting plate 31 away from the rear base 15 is rotatably connected to a rotating plate 32, a fixed shaft 33 is provided inside the rotating plate 32, the outer wall of one end of the fixed shaft 33 away from the rotating plate 32 is fixedly connected to a spring 34, the end of the fixed shaft 33 away from the spring 34 is fixedly connected to a slide plate 35, the end of the slide plate 35 away from the spring 34 is fixedly connected to a buckle 36, the outer wall of the buckle 36 away from the slide plate 35 is rotatably connected to a connecting rod 37, the outer wall of the connecting rod 37 away from the buckle 36 is fixedly connected to a moving block 38, the outer wall of the moving block 38 away from the connecting rod 37 is provided with a square plate 39, the outer wall of the rotating plate 32 away from the connecting rod 37 is rotatably connected to a friction disc 310, and the outer wall of one side of the rotating plate 32 abuts against a lever 311; refer to Figure 6 As shown, a symmetrical square groove is opened inside the rotating plate 32, the fixed shaft 33 penetrates and is slidably connected to the symmetrical square groove opened inside the rotating plate 32, the sliding plate 35 is slidably connected to the symmetrical square groove opened inside the rotating plate 32, and the end of the lever 311 away from the rotating plate 32 is fixedly connected to the top outer wall of the adapter plate 26; refer to Figure 7 As shown, one end of the square plate 39 away from the moving block 38 is fixedly connected to the top outer wall of the bending machine body 1, an arc groove is opened inside the square plate 39, and the moving block 38 is slidably connected in the arc groove opened inside the square plate 39, and the outer wall of one end of the friction plate 310 away from the rotating plate 32 is initially in contact with the surface of the workbench 11; Summary 2: Compared with the prior art, which causes the bending accuracy to decrease due to uneven force or sliding, the present invention helps the raw material to remain stable during the bending process by applying friction to the raw material at the corner. This friction can ensure that the raw material can be bent according to the predetermined path and angle during bending, thereby improving the accuracy and consistency of the bending; through the friction and extrusion of the corner, the bending and extrusion friction mechanism 3 can more effectively control the deformation of the raw material during the bending process. It can help the raw material better adapt to the shape of the mold and reduce the problems such as wrinkles, cracks or deformation that may occur during the bending process. At the same time, this mechanism can also ensure that the workpiece after bending has better surface quality and dimensional accuracy; in the bending process, the plasticity of the raw material is a key factor. Through friction and extrusion of the corner, the mechanism can increase the plastic deformation capacity of the raw material, making it easier to bend under the action of the mold. This helps to reduce the force required for bending and reduce the risk of bending failure or workpiece damage caused by insufficient material plasticity; during the bending process, the sliding or instability of the raw material may cause accidental injury to the operator. By increasing the friction of the bending angle and squeezing the raw material, the raw material can be fixed more effectively and the possibility of sliding can be reduced, thereby improving the safety of the operation process.

[0021] refer to Figure 8As shown, the centering and fastening mechanism 4 is used to ensure that the workpiece always maintains the correct position during the bending process; refer to Figure 8 As shown, the centering fastening mechanism 4 includes a fixing rod 41 fixedly connected to the outer wall of 27, a steering wheel 43 is provided on the outer wall of one end of the fixing rod 41 away from 27, a fixing block 42 is fixedly connected to the outer wall of the steering wheel 43 on one side away from the fixing rod 41, one end of the fixing block 42 away from the steering wheel 43 is fixedly connected to the upper surface of the rear base 15, a threaded rod 44 is fixedly connected to the end of the steering wheel 43 away from the fixing block 42, a moving ring 45 is provided on the outer wall of the threaded rod 44, a torsion spring line 46 is fixedly connected to the outer wall of the moving ring 45, an obstacle column 47 is fixedly connected to the end of the torsion spring line 46 away from the moving ring 45, a rotating shaft 48 is fixedly connected to the end of the obstacle column 47 away from the torsion spring line 46, a sleeve plate 49 is provided on the outer wall of the rotating shaft 48, a clamping shaft 410 is symmetrically penetrated and slidably connected to the outer wall of the end of the rotating shaft 48 away from the obstacle column 47, and the ends of the two clamping shafts 410 away from the rotating shaft 48 are fixedly connected to the clamping plates 411 refer to Fig. 9 As shown, the steering wheel 43 is rotatably connected to the inner wall of one end of the fixed block 42 away from the rear base 15, the initial position of the fixed rod 41 is clamped in the gap of the outer wall of the steering wheel 43, the movable ring 45 is slidably connected to the outer wall of the threaded rod 44 and forms a ball screw structure, the torsion spring wire 46 is wound around the outer wall of the obstacle column 47, the obstacle column 47 is fixedly connected to the eccentric part of the outer wall of the rotating shaft 48, the outer wall of the side of the sleeve plate 49 away from the rotating shaft 48 is fixedly connected to the outer wall of the workbench 11, and the rotating shaft 48 penetrates and is rotatably connected to the inner wall of the sleeve plate 49; refer to Fig.10 As shown, an oblique arc groove is symmetrically fixed inside one end of the rotating shaft 48 close to the workbench 11, and two clamping shafts 410 are respectively slidably connected to the oblique arc groove symmetrically fixed inside one end of the rotating shaft 48 close to the workbench 11, and the initial positions of the clamping plate 411 and the clamping shaft 410 are at the vertex of one end of the oblique arc groove symmetrically fixed inside one end of the rotating shaft 48 close to the workbench 11, and the inside of the clamping plate 411 is plugged into the outer wall of the workbench 11, and long-mouthed grooves are opened on both sides of the outer wall of the sleeve plate 49, and the two clamping plates 411 are slidably connected to the long-mouthed grooves opened on both sides of the outer wall of the sleeve plate 49; Summary 3: Comparison with the prior art Compared with the prior art, when the operator holds the plate to be processed for bending, there is a risk of the plate shifting and falling. The present mechanism realizes that the centering and fastening mechanism 4 can firmly fix the workpiece to prevent the workpiece from accidentally slipping or escaping from the clamping device during bending, which helps to improve the safety of the operator and reduce the risk of accidental injury. The centering and fastening mechanism 4 can ensure that the position and posture of the workpiece during the bending process remain consistent, thereby improving the accuracy and repeatability of the bending process. The centering and fastening mechanism 4 can firmly fix the workpiece and maintain its stable position, so that the results of each bending are more consistent. The stable centering and fastening mechanism 4 can ensure that the position and posture of the workpiece during the bending process are accurate and stable, reducing the bending angle error caused by movement or deformation of the workpiece, thereby reducing the scrap rate. In addition, the use of the centering and fastening mechanism 4 can reduce the physical labor of the operator and avoid long-term continuous repetitive operations, thereby reducing labor intensity; The complete working principle and steps of the above embodiment are as follows: Initial definition: 1. Plate positioning: Place the metal plate to be processed on the workbench 11, ensuring that one end of the plate is close to the "V"-shaped groove of the curved knife 14, and the other end is aligned with the limit device of the rear base 15 to ensure the accuracy and consistency of the bending.

[0022] 2. Apply pressure: The operator starts the bending process through the pressure handle 13 or the machine control panel, and the hydraulic or mechanical system starts to work, pushing the pressure handle 13 downward, thereby driving the curved blade 14 to apply pressure toward the workbench. During this process, it is necessary to pay close attention to the deformation of the sheet, adjust the pressure and speed in time to avoid excessive bending or damage to the sheet.

[0023] 3. Bending: With the continuous application of pressure, the metal sheet is gradually bent to a predetermined angle under the action of the curved knife 14. At this time, the precise cooperation of the workbench 11 and the curved knife 14 plays a key role, and they jointly ensure the smoothness and accuracy of the bending line.

[0024] 4. Release pressure and remove workpiece: When the required bending angle is reached, the operator stops applying pressure through the control panel, and the hydraulic or mechanical system slowly releases pressure, allowing the operator to safely remove the bent workpiece. At this time, the workpiece should be checked to see if it meets the design requirements. If necessary, it can be processed again after fine-tuning.

[0025] 5. Repeated operation: For batch-produced workpieces, the above steps will be repeated until all the plates have completed the bending process; When using: Angle guide mechanism for accurately controlling and adjusting the bending angle of metal materials 2 steps: like Figures 2 to 5 As shown, Figure 2As shown, when the operator places the processed plate on the upper surface of the workbench 11, as shown in Figure 3 As shown, since the support plate 21 is fixedly installed at the lower end of the workbench 11, and the worm 22 is rotatably connected inside the support plate 21, and the worm 22 and the worm gear 24 are meshed with each other, it can be seen that the rotation of the worm 22 can make the support plate 21 move back and forth in an arc on the upper surface of the worm gear 24, and the 16 fixedly connected to the outer wall of the support plate 21 will also deflect and move. In addition, Figure 4 As shown, the end of the worm 22 away from the support plate 21 is rotatably connected to a handle 23, so that the operator only needs to turn the handle 23 to drive the worm 22 to rotate, so that the plate to be processed placed on the upper surface of the workbench 11 does not need to be manually turned over and then the plate to be processed and the curved knife 14 are squeezed. The bending process of the plate to be processed can be achieved by only the displacement of the support plate 21 on the worm gear table 24. When the plate to be processed is placed on the upper surface of the workbench 11, the operator rotates the curved knife 14 in advance to make it in a vertical state before the machine is used. Figure 3 As shown, when the support plate 21 slides to the left bottom end of the worm gear table 24 as the worm 22 rotates, the workbench 11 is fixedly mounted on the upper surface of the support plate 21, and can be deflected to the left as the support plate 21 slides, so that the plate to be processed placed on the surface of the deflected workbench 11 will contact the curved knife 14, thereby achieving bending processing; In addition, Figure 5 As shown, a plurality of scales are fixedly mounted on the outer wall of the worm gear stage 24, and a pointer 25 is fixedly mounted on the surface of the support plate 21, so that the pointer 25 can be synchronously driven to point to scales with different scale lines through the deflection displacement of the support plate 21 on the worm gear stage 24, so that the operator can judge the bending angle of the plate to be processed by the pointer 25 pointing to the scales with different scale lines, thereby ensuring that the bending angle of each time meets the design requirements; Applying friction to the material at the bend is the centering and fastening mechanism that keeps the material stable during the bending process. 4 steps: like Figure 6 to Figure 7As shown, when the adapter plate 26 fixedly connected to the outer wall of the support plate 21 deflects synchronously with the displacement of the support plate 21 on the worm gear stage 24, the lever 311 fixedly connected to the top of the adapter plate 26 pushes the rotating plate 32 that is in contact with the initial position to deflect clockwise to the left, and then the connecting rod 37 connected to the outer wall of one side of the buckle 36 will deflect to one side as the rotating plate 32 deflects clockwise to the left, and the moving block 38 fixedly connected to the outer wall of one end of the connecting rod 37 is moved by the connecting rod 37 The one-side deflection movement realizes sliding to one side in the arc groove opened inside the square plate 39, and the one-side deflection movement of the connecting rod 37 and the clockwise deflection of the rotating plate 32 will also push the sliding plate 35 to move in the symmetrical square groove opened inside the rotating plate 32, and at the same time squeeze the spring 34 fixedly connected to the outer wall of the fixed shaft 33, so that the clockwise deflection of the rotating plate 32 to the left and the one-side deflection movement of the connecting rod 37 will pull the friction disk 310 to roll frictionally on the surface of the workbench 11 during the bending process; The centering and fastening mechanism ensures that the workpiece always maintains the correct position during the bending process. 4 steps: like Figures 8 to 10 As shown, after the operator puts the plate to be processed on the upper surface of the workbench 11, the plate to be processed and the workbench 11 are just inserted into the inside of the clamping plate 411. When the adapter plate 26 fixedly connected to the outer wall of the support plate 21 is deflected synchronously with the displacement of the support plate 21 on the worm gear table 24, the fixed rod 41 fixedly connected at one end of the adapter plate 26 will push the steering wheel 43 clamped on the outer wall of the fixed rod 41 to rotate, and then the threaded rod 44 fixedly connected to the outer wall of one side of the steering wheel 43 will also rotate, and the moving ring 45 forming a ball screw structure with it will slide on the outer wall of the threaded rod 44, so that the torsion spring wire 46 fixedly connected to the outer wall of the moving ring 45 will pull the obstacle column 47 wound around one end thereof to rotate, and the torsion spring wire 46 is eccentrically fixedly connected to the outer wall of one side of the rotating shaft 48, so the rotation of the obstacle column 47 will drive the rotating shaft 48 to rotate counterclockwise. When the shaft 48 rotates counterclockwise, because the initial position of the clamping plate 411 is at the top of one end of the oblique arc groove symmetrically fixedly opened inside the rotating shaft 48 near one end of the workbench 11, when the rotating shaft 48 rotates counterclockwise, the clamping plate 411 will slide from the top of one end of the oblique arc groove symmetrically fixedly opened inside the rotating shaft 48 near one end of the workbench 11 to the bottom of the oblique arc groove, and the clamping plate 411 will slide downward inside the long slide groove opened on the inner wall of the sleeve plate 49. When the plate to be processed contacts the curved knife 14 for bending, one side of the plate to be processed is bent first, so the other side of the plate to be processed placed on the upper surface of the processing plate 11 needs to be fixed, and then the symmetrically installed clamping plates 411 move toward each other, so as to clamp the workbench 11 and the plate to be processed placed on the surface of the workbench 11, and avoid displacement during the bending process of the plate; Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bending machine with a bending angle adjustment function, comprising a bending machine body (1) of a rectangular frame structure, a workbench (11) for providing a main platform for bending operation is rotatably connected to the rear side of the bending machine body (1), a support frame (12) for fixing and supporting other components is fixedly connected to both sides of the bending machine body (1), a pressure handle (13) for adjusting the bending angle of the bending machine body (1) is rotatably connected to both sides of the support frame (12), a curved knife (14) for increasing the bending force is fixedly connected to the upper surface of the workbench (11), and a rear base (15) for providing machine support and stability is fixedly connected to one side of the workbench (11), characterized in that: The bottom end of the workbench (11) is provided with an angle-folding guide mechanism (2), both sides of the curved knife (14) are provided with bending and squeezing friction mechanisms (3), and the outer wall of the workbench (11) is provided with a centering fastening mechanism (4); The angle-bending guide mechanism (2) is used to accurately control and adjust the bending angle of the metal material; The bending and squeezing friction mechanism (3) is used to apply friction force to the raw material at the bending angle so that the raw material remains stable during the bending process; The centering and fastening mechanism (4) is used to ensure that the workpiece always maintains the correct position during the bending process.

2. A bending machine with bending angle adjustment function according to claim 1, characterized in that: The angle guide mechanism (2) comprises a support plate (21) fixedly mounted on the bottom end of the workbench (11), wherein two support plates (21) are symmetrically arranged around the center of the workbench (11), a worm (22) is rotatably connected to the inside of the two support plates (21), a turning handle (23) is fixedly connected to the outer wall of one end of the worm (22) away from the support plate (21), a worm gear table (24) is arranged at the lower end of the two support plates (21), a pointer (25) is fixedly connected to the outer wall of the two support plates (21), and an adapter plate (26) is fixedly connected to the outer wall of the upper end of the two support plates (21).

3. The bending machine with bending angle adjustment function according to claim 2, characterized in that: One end of the two worm gear platforms (24) away from the support plate (21) is fixedly connected to the upper surface of the rear base (15); the worm gear platforms (24) and the worm (22) mesh with each other to form a meshing transmission; and the support plate (21) is rotatably connected to the outer wall of the worm gear platforms (24).

4. The bending machine with bending angle adjustment function according to claim 2, characterized in that: A plurality of scales are fixedly mounted on the outer wall of the worm gear platform (24); the shape of the worm gear platform (24) is semicircular, and the sides of the two adapter plates (26) away from the support plate (21) are attached to the lower end of the support frame (12).

5. The bending machine with bending angle adjustment function according to claim 1, characterized in that: The bending and squeezing friction mechanism (3) comprises an external connecting plate (31) fixedly connected to an outer wall of one side of the rear base (15); a top outer wall of a side of the external connecting plate (31) away from the rear base (15) is rotatably connected to a rotating plate (32); a fixed shaft (33) is provided through the interior of the rotating plate (32); an outer wall of an end of the fixed shaft (33) away from the rotating plate (32) is fixedly connected to a spring (34); an end of the fixed shaft (33) away from the spring (34) is fixedly connected to a sliding plate (35); and the sliding plate (35) away from the spring One end of the sliding plate (34) is fixedly connected to a buckle (36); an outer wall of the buckle (36) at a side away from the sliding plate (35) is rotatably connected to a connecting rod (37); an outer wall of the connecting rod (37) at one end away from the buckle (36) is fixedly connected to a moving block (38); an outer wall of the moving block (38) at a side away from the connecting rod (37) is provided with a square plate (39); an outer wall of the rotating plate (32) at a side away from the connecting rod (37) is rotatably connected to a friction disk (310); and an outer wall of one side of the rotating plate (32) abuts against a shifting rod (311).

6. The bending machine with bending angle adjustment function according to claim 5, characterized in that: A symmetrical square groove is provided inside the rotating plate (32), the fixed shaft (33) penetrates and is slidably connected to the symmetrical square groove provided inside the rotating plate (32), the sliding plate (35) is slidably connected to the symmetrical square groove provided inside the rotating plate (32), and one end of the shifting rod (311) away from the rotating plate (32) is fixedly connected to the top outer wall of the adapter plate (26).

7. The bending machine with bending angle adjustment function according to claim 5, characterized in that: One end of the square plate (39) away from the moving block (38) is fixedly connected to the top outer wall of the bending machine body (1); an arc groove is provided inside the square plate (39); the moving block (38) is slidably connected in the arc groove provided inside the square plate (39); and the outer wall of one end of the friction disk (310) away from the rotating plate (32) initially contacts the surface of the workbench (11).

8. The bending machine with bending angle adjustment function according to claim 2, characterized in that: The centering fastening mechanism (4) comprises a fixing rod (41) fixedly connected to the outer wall of (27); a steering wheel (43) is provided on the outer wall of one end of the fixing rod (41) away from (27); a fixing block (42) is fixedly connected to the outer wall of one side of the steering wheel (43) away from the fixing rod (41); an end of the fixing block (42) away from the steering wheel (43) is fixedly connected to the upper surface of the rear base (15); an end of the steering wheel (43) away from the fixing block (42) is fixedly connected to a threaded rod (44); and a movable ring (45) is provided on the outer wall of the threaded rod (44). The outer wall of the movable ring (45) is fixedly connected to a torsion spring wire (46), one end of the torsion spring wire (46) away from the movable ring (45) is fixedly connected to an obstacle column (47), one end of the obstacle column (47) away from the torsion spring wire (46) is fixedly connected to a rotating shaft (48), a sleeve plate (49) is provided on the outer wall of the rotating shaft (48), and a clamping shaft (410) is symmetrically penetrated and slidably connected to the outer wall of the end of the rotating shaft (48) away from the obstacle column (47), and the ends of the two clamping shafts (410) away from the rotating shaft (48) are fixedly connected to a clamping plate (411).

9. The bending machine with bending angle adjustment function according to claim 8, characterized in that: The steering wheel (43) is rotatably connected to the inner wall of one end of the fixed block (42) away from the rear base (15); the initial position of the fixed rod (41) is clamped in the gap of the outer wall of the steering wheel (43); the movable ring (45) is slidably connected to the outer wall of the threaded rod (44) and forms a ball screw structure; the torsion spring wire (46) is wound around the outer wall of the obstacle column (47); the obstacle column (47) is fixedly connected to the eccentric position of the outer wall of the rotating shaft (48); the outer wall of the sleeve plate (49) away from the rotating shaft (48) is fixedly connected to the outer wall of the workbench (11); the rotating shaft (48) passes through and is rotatably connected to the inner wall of the sleeve plate (49).

10. The bending machine with bending angle adjustment function according to claim 8, characterized in that: An oblique arc groove is symmetrically fixedly provided inside one end of the rotating shaft (48) close to the workbench (11), and the two clamping shafts (410) are respectively slidably connected to the oblique arc grooves symmetrically fixedly provided inside one end of the rotating shaft (48) close to the workbench (11). The initial positions of the clamping plate (411) and the clamping shaft (410) are located at the apex of one end of the oblique arc groove symmetrically fixedly provided inside one end of the rotating shaft (48) close to the workbench (11). The inside of the clamping plate (411) is plugged into the outer wall of the workbench (11), and long-mouth grooves are provided on both sides of the outer walls of the sleeve plate (49), and the two clamping plates (411) are slidably connected to the long-mouth grooves provided on both sides of the outer walls of the sleeve plate (49).

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