A bending device for structural part processing

Abstract

The present invention discloses a bending device for structural parts processing, which relates to the technical field of metal bending processing; in order to solve the problem of metal plate damage; specifically comprises a base and a gantry fixedly mounted on the outer wall of the top of the base, the inner side of the gantry is connected with a pressure plate through a lifting part transmission, and the outer wall of the base located below the base is provided with a support part; the support part comprises an intermediate plate and two bending plates rotatably connected to the sides of the intermediate plate, and the bottom of the other end of the bending plate is movably connected to the base through a limiting rod. The present invention uses the method of limiting the entire bending process by using a pressure plate to cooperate with the bending plates on both sides, and uses the downward movement of the symmetry center of the bending plate to perform bending, so that the two bending plates can always fit with the side walls on both sides of the bending part of the metal plate during this process, thereby forming surface contact, increasing the contact area, and preventing damage to the metal plate caused by local force during bending.

Description

Technical Field

[0001] The invention relates to the technical field of metal bending processing, and in particular to a bending device for processing structural parts. Background Art

[0002] Metal plates are commonly used structural parts, which need to be bent in different usage scenarios. For example, they can be bent symmetrically at 90 degrees to form "angle irons" to increase their bending and torsional strength, or bent at other angles to connect two non-parallel structural parts.

[0003] For example, after searching, the Chinese patent publication number CN212070053U discloses a steel structure bending device, including a bending base plate, two groups of slide grooves are symmetrically opened at the top of the bending base plate, a slider is slidably connected inside the slide groove, a connecting rod is fixed to the center of the side of the slider, the connecting rod movably passes through the side of the bending base plate, a connecting plate is fixed to the end of the connecting rod, a threaded hole is opened at the center of the side of the bending base plate, a connecting screw is threadedly connected inside the threaded hole, a through rod is fixed to the end of the connecting screw, the end of the through rod rotates and passes through the center of the connecting plate, a bending groove is opened at the top edge of the bending base plate, and an indicator scale is set on one edge of the top of the bending groove.

[0004] The above patent has the following shortcomings: it uses a clamping plate to clamp the metal plate, and then uses a bending plate to press the metal plate down to bend it. In this way, once the metal plate is bent, it is no longer in contact with the bending plate, and the contact between them is line contact. This means that the downward pressure during bending will act completely on the contact line, and the contact area is small, which will damage the surface of the metal plate and form indentations or cracks.

[0005] To this end, the present invention provides a bending device for processing structural parts. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a bending device for processing structural parts.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A bending device for processing structural parts comprises a base and a gantry fixedly mounted on the outer wall of the top of the base.

[0009] The inner side of the gantry is connected with a pressing plate through a lifting part, and the outer wall of the base above the base is provided with a supporting part;

[0010] The supporting part includes an intermediate plate and two bent plate members rotatably connected to the side of the intermediate plate. The bottom of the other end of the bent plate member is movably connected to the base through a limiting rod member. The bottom of the intermediate plate is slidably connected above the base through a main support rod, and a first spring is sleeved on the outer wall of the main support rod.

[0011] Preferably: A limiting block for limiting the displacement of the main support rod is arranged on the outer side wall of the main support rod.

[0012] Furthermore: The bent plate member includes a bent plate and an extension plate linearly slidably connected to the side of the bent plate. A first threaded rod is rotatably connected to the inner wall of the extension plate, and the outer wall of the first threaded rod is threadedly connected to the inner wall of the bent plate.

[0013] Based on the foregoing solution: The limiting rod member includes a first connecting rod, a second connecting rod, and a third connecting rod. The first connecting rod and the second connecting rod are slidably connected to each other. The top end of the first connecting rod is rotatably connected to the bottom outer wall of the bent plate. The bottom end of the second connecting rod is rotatably connected to the top outer wall of the base. One end of the third connecting rod is rotatably connected to the bottom side wall of the first connecting rod, and the other end of the third connecting rod is rotatably connected to the top outer wall of the base.

[0014] A better solution in the foregoing solution is: The pressing plate member includes a lifting plate and a pressing plate slidably connected to the inside of the lifting plate through a slider. A plurality of groups of symmetric limiting members are arranged on the side wall of the lifting plate.

[0015] As a further solution of the present invention: The limiting member includes a guiding shell fixedly installed on the side wall of the lifting plate and a guiding block slidably connected to the inner wall of the guiding shell. The relative side of the guiding shell and the guiding block is connected by a second spring, and a limiting wedge block is fixedly installed on the outer side wall of the guiding block. A first inclined surface is arranged on the bottom side wall of the limiting wedge block, and rollers are rotatably connected to both side walls of the pressing plate through wheel shafts.

[0016] Meanwhile, a limiting rod is fixedly installed on the top of the slider. A second inclined surface is arranged on the top of the limiting wedge block, and the inclination angle of the second inclined surface relative to the horizontal plane is greater than that of the first inclined surface.

[0017] As a preferred solution of the present invention: The lifting part includes a first guiding rod and a first telescopic device. The first guiding rod is fixedly installed on the top outer wall of the lifting plate, and the outer wall of the first guiding rod is slidably connected to the gantry. The first telescopic device is fixedly installed on the top outer wall of the gantry, and the telescopic end of the first telescopic device is fixedly installed on the top outer wall of the lifting plate.

[0018] Meanwhile, a plurality of dial plates are fixedly installed on the outer wall of the axle. A flexible pipe is adhesively connected to the inner side wall of the lifting plate. Both ends of the flexible pipe are connected to rigid pipes. A Tesla valve pipe is fixedly embedded in the inner wall of the lifting plate. Both ends of the Tesla valve pipe are respectively connected to the ends of the two rigid pipes. The dial plate contacts and is in extrusion fit with the flexible pipe. The Tesla valve pipe, the rigid pipes, and the flexible pipe are filled with fluid.

[0019] As a more optimal solution of the present invention: A feeding member is provided on one side of the base. The feeding member includes a storage plate slidably connected to the top of the base through a second guide rod and a second telescopic device fixedly installed on the outer wall of the top of the base. The telescopic end of the second telescopic device is fixedly installed with a push plate.

[0020] The bottom side of the push plate is connected to a toothed plate through an elastic support rod. A second threaded rod is rotatably connected to the bottom of the storage plate. The circumferential outer wall of the second threaded rod is threadedly connected to the inner wall of the base. A transition ring is rotatably connected to the inner wall of the base. A key-shaped protrusion is fixedly installed on the inner side wall of the transition ring. The key-shaped protrusion is in clearance fit with the second threaded rod through a key groove opened on the side wall of the second threaded rod. And a one-way ratchet assembly is provided on the outer wall of the transition ring. A toothed ring is fixed to the outside of the one-way ratchet assembly. The toothed ring meshes with the side wall of the push plate.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. In the present invention, by adopting the method of using the pressing plate member to cooperate with the two side bending plate members for limiting in the whole bending process, and using the downward movement of the symmetry center of the bending plate member for bending, it can be ensured that the two bending plate members always fit with the side walls on both sides of the bending part of the metal plate during this process, thus forming a surface contact, increasing the contact area, and preventing damage to the metal plate caused by local stress during bending.

[0023] 2. In the present invention, by setting the bending plate member as a fixed bending plate and an expandable expansion plate, its relative position can be changed by rotating the first threaded rod, thereby changing the size of the supporting area, and reducing the use limitation of the present device.

[0024] 3. In the present invention, by setting the limiting rod member as a combination of the first connecting rod, the second connecting rod and the third connecting rod, and using the characteristic that the first connecting rod will also rotate when the bending plate rotates and bends, combined with the limiting effect of the third connecting rod on the first connecting rod, the first connecting rod can rotate and elongate at the same time, so that under the same bending angle, the displacement of the required pressing plate member is smaller, making it shorten, so that at the same displacement speed of the pressing plate member, the time required to meet the bending requirement is shorter, improving the bending efficiency.

[0025] 4. In the present invention, by providing a limiting member, it can elastically limit and support the pressing plate, so that after bending, the pressing plate can repeatedly experience the unloading and application of loads on the metal plate, thereby using this "vibrating" form of load to eliminate the stress at the bending position, prevent the metal plate from rebounding, and increase the accuracy of the bending angle.

[0026] 5. In the present invention, by providing the second inclined surface and the limiting rod, on the one hand, it can make the pressing plate reliably reset, and on the other hand, through the targeted design of the inclination angles of the second inclined surface and the first inclined surface, combined with the correlation between the horizontal force of the roller on the limiting wedge block and the inclination angle, it not only ensures that the pressure of the lifting plate on the pressing plate is sufficient during downward pressing to guarantee the bending pressure, but also realizes that the resistance during reset is small, saving energy consumption.

[0027] 6. In the present invention, by providing the dial plate, the flexible pipe, the rigid pipe and the Tesla valve pipe, on the one hand, using the "peristaltic pump" characteristic formed by the cooperation of the dial plate and the flexible pipe to convey and circulate the fluid, and on the other hand, combining the characteristic that the fluid flow resistance is different for different fluid flow directions of the Tesla valve pipe, thus realizing the function that the rotational resistance of the roller is different for different rotation directions by combining the characteristic that the fluid flow resistance restricts the rotational resistance of the dial plate, further not only ensuring that the pressure of the lifting plate on the pressing plate is sufficient during downward pressing to guarantee the bending pressure, but also realizing that the resistance during reset is small, saving energy consumption.

[0028] 7. In the present invention, by providing a feeding member, it uses the second telescopic device to drive the push plate to realize automatic feeding of the metal plate, improving the efficiency, and then using the transmission characteristics of the gear ring, the one-way ratchet assembly, the transition ring and the second threaded rod, it can make the storage plate rise to compensate for the thickness of the metal plate during the return journey, thus realizing cluster-type cyclic feeding and increasing the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is the overall structural schematic diagram of a bending device for structural member processing proposed by the present invention;

[0030] Figure 2 is the sectional structural schematic diagram of a bending device for structural member processing proposed by the present invention;

[0031] Figure 3 is the structural schematic diagram of the support part of a bending device for structural member processing proposed by the present invention;

[0032] Figure 4 is the structural schematic diagram of the pressing plate part of a bending device for structural member processing proposed by the present invention;

[0033] Figure 5 is the sectional structural schematic diagram of the pressing plate part of a bending device for structural member processing proposed by the present invention;

[0034] Figure 6 Schematic diagram of the lifting part of a bending device for structural part processing proposed by the present invention;

[0035] Figure 7 Partial structural schematic diagram of a bending device for structural part processing proposed by the present invention;

[0036] Figure 8 Schematic diagram of the feeding part of a bending device for structural part processing proposed by the present invention;

[0037] Figure 9 Schematic diagram of the installation structure of the toothed plate of a bending device for structural part processing proposed by the present invention;

[0038] Figure 10 Schematic diagram of the installation structure of the toothed ring, one-way ratchet assembly, transition ring and the second threaded rod of a bending device for structural part processing proposed by the present invention.

[0039] In the figure: 1 - base, 2 - support part, 3 - gantry, 4 - lifting part, 5 - pressing plate part, 6 - feeding part, 7 - limiting rod, 8 - limiting block, 9 - main support rod, 10 - first spring, 11 - intermediate plate, 12 - bending plate, 13 - bending plate part, 14 - extension plate, 15 - first threaded rod, 16 - first connecting rod, 17 - second connecting rod, 18 - third connecting rod, 19 - lifting plate, 20 - pressing plate, 21 - slider, 22 - limiting part, 23 - roller, 24 - wheel axle, 25 - first inclined surface, 26 - second spring, 27 - guide shell, 28 - guide block, 29 - limiting wedge block, 30 - second inclined surface, 31 - limiting rod, 32 - first guide rod, 33 - first telescopic device, 34 - dialing plate, 35 - flexible pipe, 36 - rigid pipe, 37 - Tesla valve pipe, 38 - second guide rod, 39 - storage plate, 40 - pushing plate, 41 - second telescopic device, 42 - toothed plate, 43 - toothed ring, 44 - one-way ratchet assembly, 45 - transition ring, 46 - second threaded rod, 47 - elastic support rod, 48 - keyway, 49 - key-shaped protrusion. Detailed implementation manners

[0040] The technical solutions of this patent will be further described in detail below in conjunction with the specific implementation manners.

[0041] The embodiments of this patent will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain this patent and should not be construed as a limitation to this patent.

[0042] Embodiment 1:

[0043] A bending device for structural part processing, as Figures 1-10As shown, it includes a base 1 and a gantry 3 fixed to the top outer wall of the base 1 by bolts, the inner side of the gantry 3 is connected to a pressure plate 5 through a lifting part 4, and the outer wall of the base 1 located above the base 1 is provided with a supporting part 2.

[0044] The support portion 2 includes an intermediate plate 11 and two bent plates 13 rotatably connected to the sides of the intermediate plate 11. The bottom of the other end of the bent plate 13 is movably connected to the base 1 through a limiting rod 7. The bottom of the intermediate plate 11 is slidably connected to the top of the base 1 through a main support rod 9, and the outer wall of the main support rod 9 is provided with a spring 10.

[0045] When the device is in use, a metal plate can be placed on the surface of the bending plate 13, and then the lifting part 4 drives the pressing plate 5 to press down. After the pressing plate 5 contacts the metal plate, it will continue to press down the middle plate 11 with the contact point as the bending point, so that the middle plate 11 moves downward. At the same time, due to the limitation of the other end of the bending plate 13 by the limiting rod 7, the bending plates 13 on both sides are flipped inward until the bending plates 13 on both sides are flipped to the required bending angle.

[0046] The device uses the pressure plate 5 and the bending plates 13 on both sides to limit the entire bending process, and uses the downward movement of the symmetry center of the bending plate 13 to perform bending. In this way, the two bending plates 13 can always fit the side walls on both sides of the bending part of the metal plate, thereby forming surface contact and increasing the contact area, thereby preventing damage to the metal plate caused by local force during bending.

[0047] In order to solve the limitation problem; Figure 2 As shown, the outer wall of the main support rod 9 is provided with a limit block 8 for limiting its displacement. In this embodiment, the specific connection type between the limit block 8 and the main support rod 9 is not limited, and it can be a fixed type such as welding and plug-in, or an adjustable type with threaded connection.

[0048] By setting the limit block 8, the displacement of the main support rod 9 can be limited, so as to control the final bending angle.

[0049] To solve the limitation problem; Figure 3 As shown, the bending plate 13 includes a bending plate 12 and an extension plate 14 linearly slidably connected to the side of the bending plate 12, the inner wall of the extension plate 14 is rotatably connected to a threaded rod 15, and the outer wall of the threaded rod 15 is connected to the inner wall of the bending plate 12 by threads.

[0050] By configuring the bending plate 13 as a fixed bending plate 12 and an expandable expansion plate 14, the relative position can be changed by rotating the threaded rod 15, thereby changing the size of the supporting area, thereby reducing the use limitations of the device.

[0051] To solve the efficiency problem; as Figure 3 shown, the limiting rod member 7 includes a first connecting rod 16, a second connecting rod 17 and a third connecting rod 18. The first connecting rod 16 is slidably connected to the second connecting rod 17. The top end of the first connecting rod 16 is rotatably connected to the bottom outer wall of the bent plate 12. The bottom end of the second connecting rod 17 is rotatably connected to the top outer wall of the base 1. One end of the third connecting rod 18 is rotatably connected to the bottom side wall of the first connecting rod 16, and the other end of the third connecting rod 18 is rotatably connected to the top outer wall of the base 1.

[0052] When the connection between the bent plate 12 and the middle plate 11 moves downward, the bent plate 12 itself will rotate, so that the entire limiting rod member 7 will rotate. Due to the limitation of the third connecting rod 18 on the first connecting rod 16, the first connecting rod 16 will expand outward relative to the second connecting rod 17 while rotating, so that the length of the entire limiting rod member 7 increases, and the outer side of the bent plate 12 moves upward.

[0053] In this device, by setting the limiting rod member 7 as a combination of the first connecting rod 16, the second connecting rod 17 and the third connecting rod 18, and using the characteristic that the first connecting rod 16 will also rotate when the bent plate 12 rotates and bends, combined with the limiting effect of the third connecting rod 18 on the first connecting rod 16, the first connecting rod 16 can rotate and elongate at the same time, so that under the same bending angle, the displacement of the pressing plate member 5 required is smaller, making it shorten, so that at the same displacement speed of the pressing plate member 5, the time required to meet the bending requirements is shorter, improving the bending efficiency.

[0054] To solve the bending effect problem; as Figure 4 、 5 shown, the pressing plate member 5 includes a lifting plate 19 and a pressing plate 20 slidably connected to the inner side of the lifting plate 19 through a slider 21. A plurality of groups of symmetric limiting members 22 are arranged on the side wall of the lifting plate 19.

[0055] The limiting member 22 includes a guiding shell 27 fixed to the side wall of the lifting plate 19 by a bolt and a guiding block 28 slidably connected to the inner wall of the guiding shell 27. The opposite sides of the guiding shell 27 and the guiding block 28 are connected by a second spring 26, and a limiting wedge 29 is welded to the outer side wall of the guiding block 28. An inclined surface 25 is arranged on the bottom side wall of the limiting wedge 29, and rollers 23 are rotatably connected to both side walls of the pressing plate 20 through a wheel shaft 24.

[0056] Since the metal plate has a certain toughness, when the load is unloaded at the end of bending, it will have a springback phenomenon, resulting in poor accuracy of the bending angle.

[0057] In this device, the roller 23 is at the bottommost position in the initial state. During the bending process, the pressing plate 20 receives an upward reaction force, causing the roller 23 to fit against the inclined surface 25 of the limiting wedge 29. At this time, since the limiting wedge 29 is supported by the second spring 26, it provides resistance to the longitudinal displacement of the wheel axle 24, and the resistance is greater than the reaction force. At this time, the lifting plate 19 drives the pressing plate 20 to move downward together to bend the metal plate. Until the required bending angle is reached, the limiting block 8 contacts the base 1, and the main support rod 9 cannot move downward any further. At this time, if the lifting plate 19 is continuously lowered, the limiting wedge 29 contracts against the elastic force of the second spring 26, and the roller 23 rolls upward to another limiting wedge 29. During this process, the bending force of the pressing plate 20 on the metal plate experiences a process of unloading and re - application. By continuously repeating the above operations until the roller 23 reaches above the limiting wedge 29 at the topmost position, the bending can be completed.

[0058] In this device, by setting the limiting member 22, it can elastically limit and support the pressing plate 20, so that after bending, the pressing plate 20 repeatedly experiences the unloading and application of the load on the metal plate, thereby using this "vibrating" form of load to eliminate the stress at the bending point, prevent the metal plate from springing back, and increase the accuracy of the bending angle.

[0059] To solve the reset problem, as Figure 5 、 6 shown, a limiting rod 31 is fixed to the top of the slider 21 by bolts, and a second inclined surface 30 is provided at the top of the limiting wedge 29, and the inclination angle of the second inclined surface 30 relative to the horizontal plane is greater than that of the first inclined surface 25.

[0060] After the bending is completed, the lifting plate 19 drives the pressing plate 20 to move upward together. Until the top of the limiting rod 31 contacts the bottom of the gantry 3, its position is limited. Then, due to the inclined limiting effect of the roller 23 on the second inclined surface 30, the limiting wedge 29 contracts, and the pressing plate 20 gradually moves downward relative to the lifting plate 19 to complete the reset.

[0061] In this device, by setting the second inclined surface 30 and the limiting rod 31, on the one hand, it can make the pressing plate 20 be reliably reset. On the other hand, through the targeted design of the inclination angles of the second inclined surface 30 and the first inclined surface 25, combined with the correlation between the horizontal force of the roller 23 on the limiting wedge 29 and the inclination angle, it not only ensures that the pressure of the lifting plate 19 on the pressing plate 20 is sufficient during downward pressing to guarantee the bending pressure, but also ensures that the resistance during reset is small, saving energy consumption.

[0062] To solve the lifting problem, as Figure 6As shown, the lifting part 4 includes a first guide rod 32 and a first telescopic device 33. The first guide rod 32 is welded to the top outer wall of the lifting plate 19, and the outer wall of the first guide rod 32 is slidably connected to the gantry 3. The first telescopic device 33 is fixed to the top outer wall of the gantry 3 by bolts, and the telescopic end of the first telescopic device 33 is fixed to the top outer wall of the lifting plate 19 by bolts.

[0063] When the first telescopic device 33 expands and contracts, it can drive the lifting plate 19 to lift.

[0064] To further solve the energy consumption problem, as Figure 7 shown, a plurality of dial plates 34 are welded to the outer wall of the wheel axle 24. A flexible tube 35 is adhesively bonded to the inner side wall of the lifting plate 19. Both ends of the flexible tube 35 are connected to a rigid tube 36. And a Tesla valve tube 37 is fixedly embedded in the inner wall of the lifting plate 19. Both ends of the Tesla valve tube 37 are respectively connected to the ends of the two rigid tubes 36. The dial plate 34 is in contact with and in a squeezing fit with the flexible tube 35. The Tesla valve tube 37, the rigid tube 36, and the flexible tube 35 are filled with fluid.

[0065] When the wheel axle 24 rotates, it can cyclically squeeze the flexible tube 35, thereby forming a "peristaltic pump" structure to realize fluid circulation in the closed inner cavity composed of the flexible tube 35, the rigid tube 36, and the Tesla valve tube 37. Combining the characteristics that the fluid flow in one direction in the Tesla valve tube 37 has basically no resistance and the resistance in the other direction is relatively large, the rotational resistance of the wheel axle 24 can be restricted in the reverse direction through the fluid flow resistance, and then rotation is provided for the roller 23. Thus, when the roller 23 rotates relatively, the rotational resistance in one direction is large, while the rotational resistance in the other wire-releasing direction is small. When the roller 23 is lifted, its rotation direction is set to the direction with large rotational resistance, and when the roller 23 is lowered, its rotation direction is set to the direction with small rotational resistance.

[0066] In this device, by setting the dial plate 34, the flexible tube 35, the rigid tube 36, and the Tesla valve tube 37, on the one hand, the "peristaltic pump" characteristic formed by the cooperation of the dial plate 34 and the flexible tube 35 is utilized to convey and circulate the fluid. On the other hand, combined with the characteristic that the fluid flow resistance in the Tesla valve tube 37 is different in different flow directions, the function that the rotational resistance of the roller 23 is different in different rotation directions is realized by combining the characteristic that the fluid flow resistance restricts the rotational resistance of the dial plate 34. Thus, on the one hand, when pressing down, the pressure of the lifting plate 19 on the pressing plate 20 is sufficient to ensure the bending pressure, and on the other hand, the resistance during reset is small, saving energy consumption.

[0067] When this embodiment is in use, a metal plate can be placed on the surface of the bending plate member 13. Subsequently, the pressing plate member 5 is driven by the lifting part 4 to press down. After the pressing plate member 5 contacts the metal plate, it will continue to press down the middle plate 11 with the contact point as the bending point, so that the middle plate 11 moves downward. At the same time, due to the limitation of the other end of the bending plate member 13 by the limiting rod member 7, the two bending plate members 13 on both sides are flipped inward until the two bending plate members 13 on both sides are flipped to the required bending angle. Then, the limiting block 8 contacts the base 1, and the main support rod 9 cannot continue to move downward. At this time, continue to lower the lifting plate 19, and the limiting wedge block 29 contracts against the elastic force of the second spring 26, and the roller 23 rolls upward to another limiting wedge block 29. During this process, the bending force of the pressing plate 20 on the metal plate undergoes a process of unloading and reapplication. Continue to cycle the above operations until the roller 23 reaches above the topmost limiting wedge block 29 to complete the bending. And when the connection between the bending plate 12 and the middle plate 11 moves downward, the bending plate 12 itself will rotate, so that the entire limiting rod member 7 will rotate. Due to the limitation of the link three 18 on the link one 16, the link one 16 will expand and contract outward relative to the link two 17 while rotating, so that the length of the entire limiting rod member 7 increases, and the outer side of the bending plate 12 moves upward. In addition, after the bending is completed, the lifting plate 19 drives the pressing plate 20 to move upward together until the top of the limiting rod 31 contacts the bottom of the gantry 3, and its position is limited. Thus, the limiting wedge block 29 contracts due to the inclined limiting effect of the roller 23 on the inclined surface two 30, and the pressing plate 20 is reset step by step relative to the lifting plate 19. At the same time, when the wheel shaft 24 rotates, it can cyclically squeeze the flexible tube 35, so as to form a "peristaltic pump" structure, and realize fluid circulation in the closed inner cavity composed of the flexible tube 35, the rigid tube 36, and the Tesla valve tube 37. Combining the characteristics that the fluid flow in one direction in the Tesla valve tube 37 has basically no resistance and the resistance in the other direction is relatively large, the rotational resistance of the wheel shaft 24 can be reversely limited by the fluid flow resistance, and then rotation is provided for the roller 23. Thus, when the roller 23 rotates relative to each other, the rotational resistance in one direction is large, and the rotational resistance in the other winding direction is small. When the roller 23 is moved upward, its rotation direction is set to the direction with large rotational resistance, and when the roller 23 is moved downward, its rotation direction is set to the direction with small rotational resistance.

[0068] Embodiment 2:

[0069] A bending device for structural member processing, as Figure 1 、 8As shown in FIG. -10, to solve the feeding problem; the following improvements are made based on Embodiment 1: A feeding member 6 is provided on one side of the base 1. The feeding member 6 includes a storage plate 39 slidably connected to the top of the base 1 through a second guide rod 38 and a second telescopic device 41 bolted to the outer wall of the top of the base 1. The telescopic end of the second telescopic device 41 is bolted with a push plate 40.

[0070] The bottom side of the push plate 40 is connected with a toothed plate 42 through an elastic support rod 47. The bottom of the storage plate 39 is rotatably connected with a second threaded rod 46. The circumferential outer wall of the second threaded rod 46 is threadedly connected to the inner wall of the base 1. The inner wall of the base 1 is rotatably connected with a transition ring 45. A key-shaped protrusion 49 is welded on the inner side wall of the transition ring 45. The key-shaped protrusion 49 is in clearance fit with the second threaded rod 46 through a key groove 48 opened on the side wall of the second threaded rod 46. And a one-way ratchet assembly 44 is provided on the outer wall of the transition ring 45. A toothed ring 43 is fixed on the outside of the one-way ratchet assembly 44. The toothed ring 43 meshes with the side wall of the push plate 40.

[0071] In this embodiment, the one-way ratchet assembly 44 belongs to the conventional settings of those skilled in the art. It only enables the toothed ring 43 to have a one-way transmission function relative to the key-shaped protrusion 49 and is widely used in the pedals and drive sprockets of bicycles. Therefore, this embodiment will not be elaborated.

[0072] When this embodiment is in use, metal plates can be stacked on the top of the storage plate 39. When the second telescopic device 41 is activated, it can drive the push plate 40 to move, thereby pushing the metal plates through the upper part of the push plate 40 for feeding. And in this process, the transition ring 45 and the toothed ring 43 are in a non-transmission state. After the feeding is completed, the push plate 40 retracts, thereby driving the toothed ring 43 to rotate through the meshing of the toothed plate 42 and the toothed ring 43, and then driving the transition ring 45 to rotate through the one-way ratchet assembly 44, thereby driving the second threaded rod 46 to rotate through the cooperation of the key-shaped protrusion 49 and the key groove 48. The second threaded rod 46 drives the storage plate 39 to rise by using its threaded connection relationship with the base 1. The rising distance is controlled by the reset stroke of the second telescopic device 41.

[0073] In this device, by providing the feeding member 6, it uses the second telescopic device 41 to drive the push plate 40 to realize automatic feeding of metal plates, improving the efficiency. And by using the transmission characteristics of the toothed ring 43, the one-way ratchet assembly 44, the transition ring 45 and the second threaded rod 46, the storage plate 39 can rise during the return journey to compensate for the thickness of the metal plates, thus realizing cluster-type cyclic feeding and increasing the convenience of use.

[0074] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A bending device for processing a structural part, comprising a base (1) and a gantry (3) fixedly mounted on the top outer wall of the base (1), characterized in that: The inner side of the gantry (3) is connected to a pressing plate (5) via a lifting part (4), and the outer wall of the base (1) located above the base (1) is provided with a supporting part (2); The support portion (2) comprises an intermediate plate (11) and two bent plate members (13) rotatably connected to the side edges of the intermediate plate (11); the bottom of the other end of the bent plate member (13) is movably connected to the base (1) via a limit rod (7); the bottom of the intermediate plate (11) is slidably connected to the top of the base (1) via a main support rod (9), and the outer wall of the main support rod (9) is provided with a spring (10); The pressure plate member (5) comprises a lifting plate (19) and a pressure plate (20) slidably connected to the inner side of the lifting plate (19) via a slider (21); a side wall of the lifting plate (19) is provided with a plurality of groups of symmetrical limiting members (22); The limiting member (22) comprises a guide shell (27) fixedly mounted on the side wall of the lifting plate (19) and a guide block (28) slidably connected to the inner wall of the guide shell (27); the guide shell (27) and the guide block (28) are connected on opposite sides via a second spring (26); a limiting wedge block (29) is fixedly mounted on the outer side wall of the guide block (28); a sloped surface (25) is provided on the bottom side wall of the limiting wedge block (29); and the two side walls of the pressure plate (20) are rotatably connected to rollers (23) via a wheel shaft (24); A limiting rod (31) is fixedly mounted on the top of the sliding block (21), and a second inclined plane (30) is provided on the top of the limiting wedge block (29), wherein the inclination angle of the second inclined plane (30) relative to the horizontal plane is greater than that of the first inclined plane (25).

2. The bending device for structural member processing according to claim 1, wherein, The outer side wall of the main support rod (9) is provided with a limiting block (8) for limiting its displacement.

3. A bending device for structural member processing according to claim 1, characterized in that, The bending plate member (13) comprises a bending plate (12) and an extension plate (14) linearly slidably connected to the side of the bending plate (12); the inner wall of the extension plate (14) is rotatably connected to a threaded rod (15); and the outer wall of the threaded rod (15) is connected to the inner wall of the bending plate (12) via threads.

4. A bending device for processing structural parts according to claim 1, characterized in that, The limiting rod (7) comprises a connecting rod 1 (16), a connecting rod 2 (17) and a connecting rod 3 (18); the connecting rod 1 (16) and the connecting rod 2 (17) are slidably connected to each other; the top end of the connecting rod 1 (16) is rotatably connected to the bottom outer wall of the bending plate (12); the bottom end of the connecting rod 2 (17) is rotatably connected to the top outer wall of the base (1); one end of the connecting rod 3 (18) is rotatably connected to the bottom end side wall of the connecting rod 1 (16); and the other end of the connecting rod 3 (18) is rotatably connected to the top outer wall of the base (1).

5. A bending device for processing structural parts according to claim 1, characterized in that, The lifting part (4) includes a first guide rod (32) and a first telescopic device (33). The first guide rod (32) is fixedly installed on the top outer wall of the lifting plate (19), and the outer wall of the first guide rod (32) is slidably connected to the gantry (3). The first telescopic device (33) is fixedly installed on the top outer wall of the gantry (3), and the telescopic end of the first telescopic device (33) is fixedly installed on the top outer wall of the lifting plate (19).

6. The bending device for structural member processing according to claim 1, characterized in that, A plurality of dial plates (34) are fixedly installed on the outer wall of the wheel axle (24). A flexible pipe (35) is adhered to the inner side wall of the lifting plate (19). Both ends of the flexible pipe (35) are connected to a rigid pipe (36). A Tesla valve pipe (37) is fixedly embedded in the inner wall of the lifting plate (19). The two ends of the Tesla valve pipe (37) are respectively connected to the ends of the two rigid pipes (36). The dial plate (34) is in contact with and in a squeezing fit with the flexible pipe (35). The Tesla valve pipe (37), the rigid pipe (36), and the flexible pipe (35) are filled with fluid.

7. A bending device for processing structural parts according to claim 1, characterized in that, A feeding part (6) is arranged on one side of the base (1). The feeding part (6) includes a storage plate (39) slidably connected to the top of the base (1) through a second guide rod (38) and a second telescopic device (41) fixedly installed on the top outer wall of the base (1). The telescopic end of the second telescopic device (41) is fixedly installed with a push plate (40). The bottom side of the push plate (40) is connected to a toothed plate (42) through an elastic support rod (47). The bottom of the storage plate (39) is rotatably connected to a second threaded rod (46). The circumferential outer wall of the second threaded rod (46) is threadedly connected to the inner wall of the base (1). The inner wall of the base (1) is rotatably connected to a transition ring (45). A key-shaped protrusion (49) is fixedly installed on the inner side wall of the transition ring (45). The key-shaped protrusion (49) is in clearance fit with the second threaded rod (46) through a key groove (48) opened on the side wall of the second threaded rod (46). A one-way ratchet assembly (44) is arranged on the outer wall of the transition ring (45). A toothed ring (43) is fixed to the outside of the one-way ratchet assembly (44). The toothed ring (43) meshes with the side wall of the push plate (40).

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