Bending equipment for metal material manufacturing

Abstract

The bending equipment for metal material manufacturing relates to the technical field of metal material bending and comprises a bending table, sliding grooves are symmetrically formed in the upper end face of the bending table, supporting columns are symmetrically and fixedly connected to the upper end face of the bending table, a top plate is fixedly connected between the upper ends of the two supporting columns, and a stamping air cylinder is fixedly connected to the lower end face of the top plate. The output end of the stamping air cylinder is fixedly connected with a lifting plate, the lifting plate is vertically and slidably connected to the outer surfaces of the two supporting columns, the center of the lower end face of the lifting plate is fixedly connected with a bending plate, and a bending die is arranged below the bending plate and fixedly connected to the upper end face of the bending table. The metal material bending device further comprises a bending angle limiting mechanism, a bending material limiting mechanism and a bending position adjusting mechanism, the bending angle limiting mechanism comprises limiting blocks which are symmetrically arranged, the metal material can be subjected to sectional type stamping bending, the bending angle is gradually increased, springback can be more accurately controlled in each stage, and the bending precision is improved. Therefore, the influence of springback on bending precision is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of metal material bending, and particularly to a bending device for manufacturing metal materials. Background Art

[0002] In the field of metal material processing, bending equipment is a key device for realizing the bending and forming of metal sheets or profiles. With the continuous development of modern manufacturing, the bending process of metal materials has been widely used in many fields such as automobile manufacturing, aerospace, electronic equipment, and architectural decoration. The bending equipment makes the metal material undergo plastic deformation by applying an external force, so as to achieve the required bending angle and shape.

[0003] Traditional bending methods usually directly perform a one-time overall stamping on the metal sheet by driving a pressing plate in cooperation with a mold to achieve the required bending angle and shape. However, in the process of directly stamping the metal sheet at one time, not only is it easy for the metal sheet to undergo large elastic deformation during the bending process, due to the elastic characteristics of the material, the material often deviates from the target angle due to springback after bending, resulting in insufficient bending accuracy. Moreover, the bending force generated during one-time stamping will be concentrated in a local area of the sheet, resulting in excessive local stress, which is likely to cause excessive deformation, cracks or even fractures of the metal material, especially in the case of a small bending radius. And the punching force required for one-time stamping is relatively large, which is easy to cause wear on the pressing plate and the mold. Long-term use will cause the mold to deform or be damaged, affecting the subsequent bending accuracy of the metal sheet and the service life of the bending equipment.

[0004] Therefore, the present invention proposes a bending device for manufacturing metal materials to solve the above problems. Summary of the Invention

[0005] (1) Technical Problems to be Solved Aiming at the deficiencies of the prior art, the present invention provides a bending device for manufacturing metal materials, which can effectively solve the problems in the prior art.

[0006] (2) Technical Solutions To achieve the above object, the object of the present invention can be realized by the following technical solutions: A bending device for manufacturing metal materials, including a bending table. The upper end face of the bending table is symmetrically provided with sliding grooves. The upper end face of the bending table is symmetrically and fixedly connected with support columns. Between the upper ends of the two support columns, a top plate is fixedly connected. The lower end face of the top plate is fixedly connected with a stamping cylinder. The output end of the stamping cylinder is fixedly connected with a lifting plate. The lifting plate is vertically slidably connected to the outer surfaces of the two support columns. The center of the lower end face of the lifting plate is fixedly connected with a bending plate. A bending die is arranged below the bending plate. The bending die is fixedly connected to the upper end face of the bending table. It also includes a bending angle limiting mechanism, a bent material limiting mechanism, and a bending position adjusting mechanism. The bending angle limiting mechanism includes symmetrically arranged limiting blocks. The limiting blocks are all vertically slidably connected to the outer surfaces of the support columns, and the limiting blocks are all located below the lifting plate. The bending angle limiting mechanism is used to control the descending height of the bending plate to achieve segmented stamping and bending. The bent material limiting mechanism is used to limit the bent metal material. The bending position adjusting mechanism is used to control the bending area of the metal material.

[0007] As a further solution of the present invention: One side of each of the limiting blocks is rotatably connected with a connecting plate. The other side of the connecting plate away from the limiting block is rotatably connected with a slider. The sliders are all slidably connected in the sliding grooves. One side of the slider away from the support column is fixedly connected with a sliding column. The sliding columns all penetrate and are slidably connected to the bending table. Between the ends of the two sliding columns penetrating the bending table, a cross plate is fixedly connected.

[0008] As a further solution of the present invention: A threaded rod penetrates and is threadedly connected to the center of the cross plate. The threaded rod is rotatably connected to the side wall of the bending table. One end of the threaded rod away from the bending table is fixedly connected with a knob.

[0009] As a further solution of the present invention: On the opposite sides between the two limiting blocks, fixed blocks are fixedly connected. The upper end faces of the fixed blocks are fixedly connected with contraction buttons. The contraction buttons are used to control the contraction of the stamping cylinder.

[0010] As a further solution of the present invention: One side of one of the limiting blocks away from the fixed block is fixedly connected with a pointer. On the upper end face of the bending table at the position of the pointer, a vertical plate is fixedly connected. On the side of the vertical plate close to the pointer, scale bars are fixedly connected at equal intervals.

[0011] As a further solution of the present invention: The bending material limiting mechanism includes folding plates symmetrically arranged, the folding plates are all rotatably connected to the upper end surface of the bending die, through holes are fixedly connected to the folding plates, one end of the rotating shaft penetrates through and is rotatably connected to the bending die, and a ratchet wheel is fixedly connected to one end of the rotating shaft penetrating through the bending die. Opposite sides between the two ratchet wheels cooperate with ratchet pawls, connecting shafts are fixedly connected through the ratchet pawls, the connecting shafts are all rotatably connected to the side wall of the bending die, torsion springs are fixedly connected between the ratchet pawls and the side wall of the bending die, and the torsion springs are all sleeved on the outer surface of the connecting shaft.

[0012] As a further solution of the present invention: The connecting shafts are fixedly connected with a dial plate at the end far away from the bending die, fixed columns are fixedly connected to the outer surface of the rotating shaft, and counterweights are fixedly connected to the lower ends of the fixed columns.

[0013] As a further solution of the present invention: The bending position adjusting mechanism includes a support plate, the support plate is fixedly connected to the side wall of the bending die, a moving groove is opened on the upper end surface of the support plate, a moving block is slidably connected in the moving groove, and a limiting plate is fixedly connected to the upper end surface of the moving block.

[0014] As a further solution of the present invention: A clamping column is slidably connected through the moving block and the limiting plate, a handle is fixedly connected to the upper end of the clamping column, clamping holes are equidistantly opened at the bottom of the moving groove, and the clamping holes and the clamping column are mutually clamped.

[0015] As a further solution of the present invention: A spring is fixedly connected to the lower end surface of the handle, one end of the spring far away from the handle is fixedly connected to the upper end surface of the limiting plate, and the spring is sleeved on the outer surface of the clamping column.

[0016] (III) Beneficial effects Compared with the prior art, the present invention provides a bending device for manufacturing metal materials, which has the following beneficial effects: 1. Through the provided bending angle limiting mechanism, the metal material can be subjected to segmented stamping and bending, gradually increasing the bending angle. Not only can the springback be more precisely controlled at each stage, thereby effectively reducing the influence of springback on the bending accuracy, but also by applying force step by step through segmented stamping, the metal material can be uniformly deformed at each stage, reducing local stress concentration, effectively avoiding cracks or fractures in the metal material during the bending process, improving the reliability and quality of the bent product, and reducing the force required for each stamping, thereby reducing the wear of the bending plate and the bending die, prolonging the service life of the bending die, and reducing production costs.

[0017] 2. By setting the pointer and scale bar, it is convenient for the staff to adjust the position of the limit block, accurately control the distance that the bending plate descends each time during the segmented bending process. During the segmented bending process, the staff can not only flexibly adjust the position of the limit block according to different bending stages and material properties to perform different segmented stamping and bending on metal materials, but also the design of the pointer and scale bar makes it simple and fast to adjust the position of the limit block. The staff does not need complex measuring tools and only needs to adjust according to the scale to quickly complete the preparation work before each bending.

[0018] 3. By setting the bending material limit mechanism, during the segmented bending process of metal materials, the folding plate can always be attached to the bottom of the metal material. It can not only adjust the limiting position of the folding plate on the metal material in real time to ensure that the angle and position of each bending are exactly the same, effectively reducing the problem of inaccurate bending caused by human error, but also during the segmented bending process, each bending angle is small and the springback amount of the metal material is relatively small. Thus, the folding plate can dynamically compensate for the springback according to the actual bending angle to ensure the accuracy of the final bending angle of the metal material. Among them, by setting the dial plate, fixed column and counterweight, after the metal material is bent, it can automatically pull the two-sided folding plates to rotate in the reverse direction to the initial position, making the surface of the folding plate and the folding die maintain the same horizontal line. It not only ensures that the starting position of each bending is the same, improves the repeatability and precision of metal material bending, but also the folding plate can automatically reset to the initial position after the metal material is bent without manual intervention, reducing the labor intensity and operation time of the staff and improving the efficiency of metal material bending.

[0019] 4. By setting the bending position adjustment mechanism, during the bending process of metal materials, it can control the distance that the metal material passes through under the bending plate, accurately control the passing distance of the metal material, reduce the errors caused by the lack of experience or negligence of the staff. Even novice staff can quickly master the correct operation method through the accurate control function, ensure that each piece of metal material can be bent under the same conditions, reduce the bending error caused by inaccurate position, and thus ensure the stability of the bending quality of metal materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 The enlarged structural schematic diagram of area A in; Figure 3Schematic diagram of the connection structure of the limit block of the present invention; Figure 4 Schematic diagram of the upper end face structure of the bending table of the present invention; Figure 5 For the present invention Figure 4 Enlarged structure diagram of area B in Figure 6 For the present invention Figure 4 Enlarged structure diagram of area C in Figure 7 Schematic diagram of the connection structure of the support plate and the limit plate of the present invention.

[0022] In the figure: 1, bending table; 2, support column; 3, top plate; 4, stamping cylinder; 5, lifting plate; 6, bending plate; 701, limit block; 702, connecting plate; 703, cross plate; 704, fixing block; 705, retraction button; 706, vertical plate; 707, scale bar; 708, pointer; 709, slider; 710, sliding column; 711, threaded rod; 712, knob; 801, folding plate; 802, rotating shaft; 803, ratchet; 804, ratchet pawl; 805, connecting shaft; 806, torsion spring; 807, dial plate; 808, fixing column; 809, counterweight block; 901, support plate; 902, limit plate; 903, moving groove; 904, moving block; 905, clamping column; 906, spring; 907, handle; 908, clamping hole; 10, bending die; 11, sliding groove. Specific embodiments

[0023] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] A bending device for manufacturing metal materials in this embodiment, such as Figure 1 - Figure 7As shown in the figure, it includes a bending table 1. Symmetrically arranged chutes 11 are provided on the upper end face of the bending table 1. Support columns 2 are symmetrically and fixedly connected to the upper end face of the bending table 1. A top plate 3 is fixedly connected between the upper ends of the two support columns 2. A stamping cylinder 4 is fixedly connected to the lower end face of the top plate 3. The output end of the stamping cylinder 4 is fixedly connected to a lifting plate 5. The lifting plate 5 is vertically slidably connected to the outer surfaces of the two support columns 2. A bending plate 6 is fixedly connected to the center of the lower end face of the lifting plate 5. A bending die 10 is arranged below the bending plate 6. The bending die 10 is fixedly connected to the upper end face of the bending table 1. It also includes a bending angle limiting mechanism, a bending material limiting mechanism, and a bending position adjusting mechanism. The bending angle limiting mechanism includes symmetrically arranged limit blocks 701. The limit blocks 701 are all vertically slidably connected to the outer surfaces of the support columns 2, and the limit blocks 701 are all located below the lifting plate 5. The bending angle limiting mechanism is used to control the descending height of the bending plate 6 to achieve segmented stamping and bending.

[0025] In this embodiment, as Figure 3 shown, connecting plates 702 are rotatably connected to one side of each of the limit blocks 701. Sliders 709 are rotatably connected to the sides of the connecting plates 702 away from the limit blocks 701. The sliders 709 are all slidably connected in the chutes 11. Slide columns 710 are fixedly connected to the sides of the sliders 709 away from the support columns 2. The slide columns 710 all penetrate and are slidably connected to the bending table 1. A cross plate 703 is fixedly connected between the ends of the two slide columns 710 penetrating the bending table 1. When pulling the cross plate 703 to drive the sliders 709 to move in the chutes 11 through the slide columns 710, the sliders 709 will pull the lower ends of the connecting plates 702 to move synchronously, reducing the inclination angle between the connecting plates 702 and the bending table 1. When the inclination state of the connecting plates 702 changes, the connecting plates 702 will drive the limit blocks 701 to slide up and down on the outer surfaces of the support columns 2.

[0026] In this embodiment, as Figure 3 shown, a threaded rod 711 penetrates and is threadedly connected to the center of the cross plate 703. The threaded rod 711 is rotatably connected to the side wall of the bending table 1. A knob 712 is fixedly connected to the end of the threaded rod 711 away from the bending table 1. When rotating the knob 712 to drive the threaded rod 711 to rotate, through the threaded connection between the threaded rod 711 and the cross plate 703, the cross plate 703 can be driven to move horizontally on the outer surface of the threaded rod 711, so that the cross plate 703 approaches or moves away from the bending table 1.

[0027] In this embodiment, as Figure 1 shown, fixed blocks 704 are fixedly connected to the opposite sides between the two limit blocks 701. Shrink buttons 705 are fixedly connected to the upper end faces of the fixed blocks 704. The shrink buttons 705 are used to control the contraction of the stamping cylinder 4. When the stamping cylinder 4 pushes the lifting plate 5 to descend, when the lifting plate 5 contacts and presses the shrink button 705, the stamping cylinder 4 will be controlled to contract, pulling the lifting plate 5 to automatically rise.

[0028] In this embodiment, as Figure 2 shown, on one side of a limiting block 701 away from a fixed block 704, a pointer 708 is fixedly connected. On the upper end surface of a bending table 1 at the position of the pointer 708, a vertical plate 706 is fixedly connected. On the side of the vertical plate 706 close to the pointer 708, scale bars 707 are fixedly connected at equal intervals. When the limiting block 701 slides up and down on the outer surface of a support column 2, the pointer 708 can be driven to move synchronously, changing the scale bar 707 pointed by the pointer 708. By observing the scale bar 707 pointed by the pointer 708, a worker can accurately control the lifting position of the limiting block 701.

[0029] In the prior art, usually, a pressing plate is driven to cooperate with a mold to directly perform a one-time overall stamping on a metal plate to achieve the required bending angle and shape. However, in the process of directly stamping the metal plate at one time, not only is it easy for the metal plate to experience large elastic deformation during the bending process, but due to the elastic characteristics of the material, the material often deviates from the target angle due to springback after bending, resulting in insufficient bending accuracy. Moreover, the bending force generated during one-time stamping will be concentrated in a local area of the plate, resulting in excessive local stress, which is likely to cause excessive deformation, cracks or even fractures of the metal material, especially in the case of a small bending radius. In addition, the punching force required for one-time stamping is relatively large, which is likely to cause wear to the pressing plate and the mold. Long-term use will cause the mold to deform or be damaged, affecting the subsequent bending accuracy of the metal plate and the service life of the bending equipment. Compared with the prior art, it is possible to perform segmented stamping and bending on the metal material, gradually increasing the bending angle. Not only can the springback be more accurately controlled at each stage, thereby effectively reducing the influence of springback on the bending accuracy, but also by gradually applying force through segmented stamping, the metal material can be uniformly deformed at each stage, reducing local stress concentration, effectively avoiding cracks or fractures in the metal material during the bending process, improving the reliability and quality of the bent product, and reducing the force required for each stamping, thereby reducing the wear of the bending plate 6 and the bending mold 10, extending the service life of the bending mold 10, and reducing the production cost.

[0030] On other levels, this embodiment further provides a bending material limiting mechanism for limiting the bent metal material, as Figure 1 , Figure 4 and Figure 5As shown in the figure, the bending material limiting mechanism includes symmetrically arranged folding plates 801. The folding plates 801 are rotatably connected to the upper end surface of the bending die 10. Through holes are formed in the folding plates 801 and fixedly connected with rotating shafts 802. One end of each rotating shaft 802 penetrates and is rotatably connected to the bending die 10. The ends of the rotating shafts 802 penetrating the bending die 10 are fixedly connected with ratchets 803. Opposite sides between the two ratchets 803 are cooperatively worked with pawls 804. Through holes are formed in the pawls 804 and fixedly connected with connecting shafts 805. The connecting shafts 805 are rotatably connected to the side walls of the bending die 10. Torsion springs 806 are fixedly connected between the pawls 804 and the side walls of the bending die 10. The torsion springs 806 are sleeved on the outer surfaces of the connecting shafts 805.

[0031] In this embodiment, as Figure 5 shown, one end of each connecting shaft 805 far from the bending die 10 is fixedly connected with a dial plate 807. Fixed columns 808 are fixedly connected to the outer surfaces of the rotating shafts 802. Counterweights 809 are fixedly connected to the lower ends of the fixed columns 808. When the rotating shafts 802 are rotated to drive the separation of the pawls 804 and the ratchets 803, under the influence of the self-gravity of the counterweights 809, the fixed columns 808 can drive the rotating shafts 802 to rotate in the reverse direction.

[0032] Compared with the prior art, during the segmented bending process of the metal material, the folding plates 801 can always be attached to the bottom of the metal material, which can not only adjust the limiting position of the folding plates 801 for the metal material in real time, ensure that the bending angles and positions are precisely consistent each time, effectively reduce the problem of inaccurate bending caused by human error, but also during the segmented bending process, the bending angle is relatively small each time, and the springback amount of the metal material is also relatively small. Therefore, the folding plates 801 can dynamically compensate for the springback according to the actual bending angle to ensure the accuracy of the final bending angle of the metal material; Among them, through the arranged dial plates 807, fixed columns 808 and counterweights 809, after the metal material is bent, the two side folding plates 801 can be automatically pulled to rotate in the reverse direction to the initial position, so that the surfaces of the folding plates 801 and the folding die are on the same horizontal line. This not only ensures that the starting position of each bending is consistent, improves the repeatability and accuracy of the metal material bending, but also the folding plates 801 can automatically reset to the initial position after the metal material is bent, without manual intervention, reducing the labor intensity and operation time of the staff and improving the efficiency of the metal material bending.

[0033] On other levels, this embodiment also provides a bending position adjusting mechanism for controlling the bending area of the metal material, as Figure 1 、 Figure 4 、 Figure 6 and Figure 7As shown in the figure, the bending position adjusting mechanism includes a support plate 901, which is fixedly connected to the side wall of the bending die 10. A moving groove 903 is formed on the upper end surface of the support plate 901. A moving block 904 is slidably connected in the moving groove 903, and a limiting plate 902 is fixedly connected to the upper end surface of the moving block 904.

[0034] In this embodiment, as Figure 7 shown, a clamping column 905 is slidably connected through between the moving block 904 and the limiting plate 902. A handle 907 is fixedly connected to the upper end of the clamping column 905. Clamping holes 908 are equidistantly formed at the bottom inside the moving groove 903. The clamping holes 908 and the clamping column 905 are clamped with each other. By driving the clamping column 905 to be inserted into the clamping hole 908, the moving block 904 can be limited at a specified position inside the moving groove 903.

[0035] In this embodiment, as Figure 6 shown, a spring 906 is fixedly connected to the lower end surface of the handle 907. One end of the spring 906 away from the handle 907 is fixedly connected to the upper end surface of the limiting plate 902, and the spring 906 is sleeved on the outer surface of the clamping column 905. When the handle 907 is pulled to drive the clamping column 905 to rise, the spring 906 will be pulled synchronously. When the handle 907 is released, the elastic force of the spring 906 can automatically pull the handle 907 to descend, and push the clamping column 905 to slide downward on the limiting plate 902.

[0036] Compared with the prior art, during the bending process of the metal material, the distance that the metal material passes through below the bending plate 6 can be controlled, and the passing distance of the metal material can be accurately controlled, reducing the errors caused by the lack of experience or negligence of the staff. Even novice staff can quickly master the correct operation method through the precise control function, ensuring that each piece of metal material can be bent under the same conditions, reducing the bending error caused by inaccurate position, and thus ensuring the stability of the bending quality of the metal material.

[0037] The working process and principle involved in the overall content of the above embodiment are as follows: When the staff needs to bend the metal material, they first lift the handle 907 upwards to drive the clamping column 905 to slide vertically upward on the moving block 904 and the limit plate 902, and at the same time pull the spring 906 connected between the handle 907 and the limit plate 902. During the rising process of the clamping column 905, the clamping column 905 will be separated from one of the clamping holes 908 at the bottom of the moving groove 903. After the clamping column 905 and the clamping hole 908 are completely separated, the staff can horizontally toggle the handle 907, and use the clamping column 905 to toggle the limit plate 902 to drive the moving block 904 to slide in the moving groove 903, and adjust the distance between the limit plate 902 and the upper end of the support plate 901. After the distance adjustment of the support plate 901 is completed, the staff can release the handle 907, and the spring 906 connected between the handle 907 and the limit plate 902 can automatically pull the handle 907 close to the limit plate 902, pushing the handle 907 down The clamping column 905 connected to the end slides vertically downward on the limiting plate 902 and the moving block 904, so that the clamping column 905 is clamped into the clamping hole 908 opened at the bottom of the moving groove 903 again, and the position of the limiting plate 902 is fixed. After the position of the limiting plate 902 is fixed, the staff can place the metal material on the upper end surface of the bending mold 10, and then push the metal material to move in the direction of the limiting plate 902 until the metal material and the limiting plate 902 are in contact and cannot move further, and control the distance that the metal material passes from under the bending plate 6. The passing distance of the metal material is accurately controlled, reducing the errors caused by the staff's lack of experience or negligence. Even novice staff can quickly master the correct operation method through the precise control function, ensuring that each piece of metal material can be bent under the same conditions, reducing the bending error caused by inaccurate position, thereby ensuring the stability of the bending quality of the metal material; After the metal material is placed at the specified position on the upper end of the bending die 10, the staff can drive the stamping cylinder 4 to push the lifting plate 5 to vertically descend on the outer surface of the support column 2, driving the bending plate 6 connected to the lower end of the lifting plate 5 to stamp and bend the metal material below. After the lifting plate 5 descends above the limit block 701, since the fixed block 704 is connected to the side wall of the limit block 701 and the contraction button 705 is connected to the upper end surface of the fixed block 704, the lifting plate 5 will press the contraction button 705 connected to the upper end surface of the fixed block 704, driving the stamping cylinder 4 to drive the lifting plate 5 to rise in the reverse direction, pulling the bending plate 6 connected to the lower end surface of the lifting plate 5 away from the metal material. After the bending plate 6 and the metal material are completely separated, the staff can rotate the knob 712, driving the threaded rod 711 to rotate on the side wall of the bending table 1. Through the threaded connection between the threaded rod 711 and the cross plate 703, the cross plate 703 moves horizontally away from the bending table 1 on the outer surface of the threaded rod 711, and at the same time pulls the sliding columns 710 symmetrically connected to the cross plate 703 out of the bending table 1. Since the slider 709 is connected to the end of the sliding column 710 away from the cross plate 703 and the connecting plate 702 is rotatably connected between the slider 709 and the limit block 701, during the sliding process of the sliding column 710, the slider 709 will be pulled to slide synchronously in the chute 11, and at the same time, the limit block 701 will be pulled to descend on the outer surface of the support column 2 through the connecting plate 702. After the limit block 701 descends, the staff can drive the stamping cylinder 4 again, driving the bending plate 6 to descend through the lifting plate 5 to perform secondary stamping and bending on the metal material below. At this time, since the position of the limit block 701 has changed, the descending distance of the lifting plate 5 will also be extended, so that the bending angle of the bending plate 6 on the metal material will also increase synchronously. Repeating this process can make the bending plate 6 perform segmented bending on the metal material, gradually increasing the bending angle. This can not only more precisely control the springback at each stage, thus effectively reducing the impact of springback on the bending accuracy, but also make the metal material deform uniformly at each stage by applying force gradually through segmented stamping, reducing local stress concentration, effectively avoiding cracks or fractures in the metal material during the bending process, improving the reliability and quality of the bent product, and reducing the force required for each stamping, thereby reducing the wear of the bending plate 6 and the bending die 10, extending the service life of the bending die 10, and reducing production costs; When the staff adjusts the height of the limit block 701 on the outer surface of the support column 2, as the limit block 701 slides, the limit block 701 can drive the pointer 708 connected to the side wall to move synchronously. Since the pointer 708 corresponds to the scale bar 707 connected to the side wall of the vertical plate 706, when the pointer 708 moves, the staff can read the scale bar 707 pointed by the pointer 708, so as to accurately control the adjusted position of the limit block 701 and precisely control the distance that the bending plate 6 descends each time during the segmented bending process. During the segmented bending process, the staff can not only flexibly adjust the position of the limit block 701 according to different bending stages and material characteristics to perform different segmented stamping and bending on the metal material, but also the design of the pointer 708 and the scale bar 707 makes it simple and fast to adjust the position of the limit block 701. The staff does not need complex measuring tools and only needs to adjust according to the scale to quickly complete the preparation work before each bending; During the bending process of the metal material placed above the bending die 10, the folding plates 801 symmetrically arranged above the bending die 10 will rotate synchronously while fitting the lower end surface of the metal material, and drive the rotating shaft 802 connected to the folding plates 801 to rotate on the bending die 10. During the rotation of the rotating shaft 802, the rotating shaft 802 will drive the ratchet wheel 803 to rotate synchronously. At this time, the pawl 804 arranged on the outer surface of the ratchet wheel 803 will not limit the ratchet wheel 803. When the bent metal material between the two folding plates 801 rebounds, the folding plates 801 and the rotating shaft 802 will be affected by the ratchet wheel 803 and the pawl 804 and cannot rotate in the reverse direction, so that the folding plates 801 always fit to the bottom of the metal material for limiting. This can not only adjust the limiting position of the folding plates 801 on the metal material in real time to ensure that the angle and position of each bending are exactly the same, effectively reducing the problem of inaccurate bending caused by human error, but also during the segmented bending process, the bending angle each time is small and the springback amount of the metal material is relatively small, so that the folding plates 801 can dynamically compensate for the springback according to the actual bending angle to ensure the accuracy of the final bending angle of the metal material; After the metal material placed between the folding plates 801 is bent, the staff can push the two side plates 807 upwards to drive the connecting shaft 805 to rotate on the side wall of the bending mold 10, drive the pawl 804 and the ratchet 803 connected to the outer surface of the connecting shaft 805 to separate, and at the same time squeeze the torsion spring 806 connected between the pawl 804 and the side wall of the bending mold 10. After the pawl 804 and the ratchet 803 are completely separated, since the outer surface of the rotating shaft 802 is connected to a fixed column 808, and the lower end of the fixed column 808 is connected to a counterweight block 809, the counterweight block 809 itself Due to the influence of gravity, it will automatically fall to the bottom, so that the fixed column 808 drives the rotating shaft 802 to rotate in the opposite direction, driving the folding plate 801 connected to the rotating shaft 802 to rotate in the opposite direction to the initial position, so that the surface of the folding plate 801 and the folding mold are kept at the same horizontal line, which not only ensures the consistency of the starting position of each bending, improves the repeatability and accuracy of the metal material bending, but also the folding plate 801 can automatically return to the initial position after the metal material is bent, without manual intervention, reducing the labor intensity and operation time of the staff, and improving the efficiency of metal material bending; After the folding plate 801 rotates to the initial position, the staff can release the shift plate 807. At this time, through the rebound force of the torsion spring 806 connected between the ratchet 803 and the bending mold 10, the ratchet 804 can be shifted to drive the connecting shaft 805 to rotate in the opposite direction, so that the ratchet 804 is again attached to the outer surface of the ratchet 803 and cooperates with the ratchet 803 to work.

[0038] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A bending device for manufacturing metal materials, including a bending table (1). Symmetrical chutes (11) are provided on the upper end face of the bending table (1). Symmetrical support columns (2) are fixedly connected to the upper end face of the bending table (1). A top plate (3) is fixedly connected between the upper ends of the two support columns (2). A stamping cylinder (4) is fixedly connected to the lower end face of the top plate (3). The output end of the stamping cylinder (4) is fixedly connected to a lifting plate (5). The lifting plate (5) is vertically slidably connected to the outer surfaces of the two support columns (2). A bending plate (6) is fixedly connected to the center of the lower end face of the lifting plate (5). A bending die (10) is arranged below the bending plate (6). The bending die (10) is fixedly connected to the upper end face of the bending table (1), and it is characterized in that, It also includes a bending angle limiting mechanism, a bending material limiting mechanism, and a bending position adjusting mechanism; The bending angle limiting mechanism includes symmetrically arranged limiting blocks (701), and the limiting blocks (701) are vertically slidably connected to the outer surface of the support column (2), and the limiting blocks (701) are both located below the lifting plate (5). The bending angle limiting mechanism is used to control the descending height of the bending plate (6) to achieve segmented stamping and bending; The bending material limiting mechanism is used to limit the bent metal material; The bending position adjusting mechanism is used to control the bending area of the metal material.

2. The bending device for manufacturing metal materials according to claim 1, characterized in that, One side of each of the limiting blocks (701) is rotatably connected to a connecting plate (702), and one side of the connecting plate (702) away from the limiting block (701) is rotatably connected to a slider (709). The sliders (709) are slidably connected to the sliding grooves (11). One side of the sliders (709) away from the support column (2) is fixedly connected to a sliding column (710). The sliding columns (710) are all slidably connected through the bending table (1). A cross plate (703) is fixedly connected between one ends of the two sliding columns (710) passing through the bending table (1).

3. The bending device for manufacturing metal materials according to claim 2, wherein, A threaded rod (711) is threadedly connected through the center of the cross plate (703), and the threaded rod (711) is rotatably connected to the side wall of the bending table (1). One end of the threaded rod (711) away from the bending table (1) is fixedly connected to a knob (712).

4. A bending device for manufacturing metal materials according to claim 1, characterized in that, Relatively one side between the two limiting blocks (701) is fixedly connected with a fixed block (704), and a contraction button (705) is fixedly connected to the upper end surface of the fixed block (704). The contraction button (705) is used to control the contraction of the stamping cylinder (4).

5. A bending device for manufacturing a metal material according to claim 4, characterized in that, One of the limiting blocks (701) is fixedly connected with a pointer (708) on the side away from the fixed block (704). A vertical plate (706) is fixedly connected to the upper end surface of the bending table (1) at the position of the pointer (708). Scale bars (707) are fixedly connected at equal intervals on the side of the vertical plate (706) close to the pointer (708).

6. The bending device for manufacturing metal materials according to claim 1, wherein, The bending material limiting mechanism includes symmetrically arranged folding plates (801). The folding plates (801) are rotatably connected to the upper end surface of the bending die (10). A rotating shaft (802) is fixedly connected through each of the folding plates (801). One end of the rotating shaft (802) is rotatably connected through the bending die (10). A ratchet wheel (803) is fixedly connected to one end of the rotating shaft (802) passing through the bending die (10). A ratchet pawl (804) is cooperatively worked on the relatively one side between the two ratchet wheels (803). A connecting shaft (805) is fixedly connected through each of the ratchet pawls (804). The connecting shafts (805) are rotatably connected to the side wall of the bending die (10). A torsion spring (806) is fixedly connected between each of the ratchet pawls (804) and the side wall of the bending die (10). The torsion springs (806) are all sleeved on the outer surface of the connecting shaft (805).

7. A bending device for manufacturing metal materials according to claim 6, characterized in that, One end of the connecting shaft (805) far away from the bending die (10) is fixedly connected with a shifting plate (807), and fixed columns (808) are fixedly connected to the outer surface of the rotating shaft (802), and counterweight blocks (809) are fixedly connected to the lower ends of the fixed columns (808).

8. The bending device for manufacturing metal materials according to claim 1, characterized in that, The bending position adjusting mechanism includes a support plate (901), the support plate (901) is fixedly connected to the side wall of the bending die (10), a moving groove (903) is formed in the upper end surface of the support plate (901), a moving block (904) is slidably connected in the moving groove (903), and a limiting plate (902) is fixedly connected to the upper end surface of the moving block (904).

9. A bending device for manufacturing a metal material, according to claim 8, wherein, A clamping column (905) is slidably connected through between the moving block (904) and the limiting plate (902), a handle (907) is fixedly connected to the upper end of the clamping column (905), clamping holes (908) are equidistantly formed in the bottom of the moving groove (903), and the clamping holes (908) and the clamping column (905) are clamped with each other.

10. The bending device for manufacturing metal materials according to claim 9, characterized in that, A spring (906) is fixedly connected to the lower end surface of the handle (907), one end of the spring (906) far away from the handle (907) is fixedly connected to the upper end surface of the limiting plate (902), and the spring (906) is sleeved on the outer surface of the clamping column (905).

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