Fabricated flat steel bending tool

Abstract

The application discloses an assembled flat steel bending tool, and relates to the technical field of bending tools.The tool comprises an angle steel support, and a bearing platform is fixedly installed on the angle steel support; the angle steel support, the bearing platform, a movable truss, a strip-shaped groove and a T-shaped handle screw rod structure are matched; the overall tool is formed by assembling conventional section steel on site; the tool is light in structure, flexible in transfer and assembly, can be adapted to multiple scattered working operation scenes on a construction site, and is free from the use defects of traditional large-scale bending equipment, such as fixed operation and limited movement; meanwhile, the tool is matched with the structure form that the strip-shaped groove is self-adaptively slid and the T-shaped handle screw rod is locked and positioned, so that the bending angle is steplessly and continuously adjustable and stably locked, the tool can complete multi-angle bending processing without replacing a die, the technical problems of traditional factory prefabrication, such as high cost, easy deformation and correction of components and single bending angle of traditional equipment, are solved, and the comprehensive cost of on-site flat steel component processing is greatly reduced.

Description

Technical Field

[0001] This invention belongs to the field of bending fixture technology, specifically an assembled flat steel bending fixture. Background Technology

[0002] In the construction of buildings and rail transit, flat steel components are commonly used basic profiles in the installation of various steel structures, pre-embedded supports, and component connections. On construction sites, it is often necessary to bend straight flat steel into shaped components at different angles according to the installation conditions. Currently, the industry can use large-scale specialized bending equipment for flat steel bending. However, large-scale bending equipment has a fixed overall structure, is bulky, and has poor transportation flexibility. It can only operate in a fixed processing plant. Most of the irregularly shaped flat steel components required on construction sites need to be prefabricated in the factory and then transported to the site.

[0003] For example, CN115846477B discloses a steel bending device and its operating method for steel processing, specifically relating to the field of steel processing technology. It includes an inclined guide cover, with a support frame plate welded to one side. A linkage bending mechanism is installed on the inclined surface of the top of the support frame plate. The linkage bending mechanism includes a pressing cylinder installed on the inclined surface of the top of the support frame plate, and a pressing support rod fixed to the pushing end of the pressing cylinder. A bending die block for extruding steel is provided at the bottom end of the pressing support rod, and an L-shaped bending support plate for supporting the steel is provided below the bending die block. This invention uses a linkage bending mechanism to achieve continuous and rapid bending and cutting of steel. After cutting, the steel is guided downwards by gravity, and the discharge and feeding are linked, resulting in higher steel bending efficiency.

[0004] However, existing large-scale bending equipment cannot be moved on-site due to its fixed design, making it difficult to adapt to the multi-point and decentralized bending processing needs of construction sites. The factory prefabrication mode is not only cumbersome in terms of transportation and long construction cycle, but also prone to deformation due to compression during transportation and stacking of prefabricated flat steel components, requiring a large amount of manpower for secondary correction. In addition, conventional large-scale bending equipment only supports fixed angle adjustment and cannot achieve stepless fine adjustment of bending angle, resulting in poor adaptability to diverse irregular components on construction sites and high overall construction and processing costs. Furthermore, traditional on-site manual bending operations lack stable limiting support structures and uniform pressure structures, leading to uneven stress during flat steel bending, which can easily cause quality defects such as plate distortion, edge warping, and surface indentation. The forming accuracy of the workpiece is low, and the consistency of batch finished products is poor. At the same time, manual bending operations are labor-intensive, have cumbersome operation procedures, and take a long time to process a single workpiece, making it difficult to meet the needs of large-scale construction. Summary of the Invention

[0005] To address the problems mentioned in the background section, this invention provides an assembled flat steel bending fixture.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an assembled flat steel bending fixture, comprising an angle steel bracket, a bearing platform fixedly mounted on the angle steel bracket, a pair of platform supports fixedly mounted on the upper end of the bearing platform, a first support bearing roller mounted inside each platform support, a hinge mounted at the end of the bearing platform, a movable truss arranged above the bearing platform being rotatably connected to the bearing platform via the hinge, a truss support fixedly mounted at the front end of the movable truss, a second pressure bearing roller mounted inside the truss support, a strip groove formed on the movable truss away from the hinge, a T-shaped handle screw threaded through the strip groove and assembled with the bearing platform, a hand crank fixedly connected to the end of the truss support away from the movable truss, the hand crank forming a linkage with the second pressure bearing roller; An angle auxiliary marking component is mounted on the side of the bearing platform. The angle auxiliary marking component is equipped with a linkage shaft that cooperates with the hinge transmission. A disc is fixedly mounted on the end of the bearing platform away from the hinge. A through-hole cylinder is fixedly connected to the center of the disc. The linkage shaft passes through the through-hole cylinder and an indicator rod for angle indication is fixedly installed on the exposed side end. A scale is fixedly fitted to the end face of the disc facing away from the hinge.

[0007] Preferably, an angle memory marking component is matched and provided on the outer side of the angle auxiliary marking component. The angle memory marking component includes an outer ring groove formed circumferentially on the outer circumferential surface of the disk. Several sliders are slidably assembled inside the groove of the outer ring groove. A U-shaped block is fixedly connected to one end of each slider away from the outer ring groove. An angle calibration indicator strip is fixedly assembled at the end of the U-shaped block. The angle calibration indicator strip and the scale form an alignment marking cooperation structure to realize the fixed-point calibration and rapid alignment of the bending angle.

[0008] Preferably, the angle steel bracket and the bearing platform are assembled into an integral structure using a fixed rigid connection method, which is used to continuously bear the vertical load and lateral force during the tooling operation.

[0009] Preferably, a pair of platform supports are symmetrically arranged and assembled on the upper surface of the bearing platform, and the two sets of platform supports and truss supports have the same structural form and assembly specifications.

[0010] Preferably, the first support bearing roller and the second pressure bearing roller are designed with a smooth outer circumference and are used as a whole to adapt to the fitting and support requirements of the flat steel workpiece.

[0011] Preferably, the hinge is assembled between the load-bearing platform and the movable truss using a hinged rotating connection structure, which provides a stable rotation fulcrum for the movable truss.

[0012] Preferably, the T-shaped grip screw adopts a vertical assembly structure and is fixedly matched with the bearing platform. The T-shaped grip screw can slide and adapt in the strip groove. The T-shaped grip screw realizes the functions of pressing and locking and releasing and resetting through rotation and lifting.

[0013] Preferably, the hand crank handle adopts an external cantilever structure fixed to the end of the truss support to form a convenient point for manual force application, thereby realizing the output of bending action through manual drive.

[0014] Preferably, the linkage shaft and the hinge form a synchronous linkage structure, and rotate synchronously with the swing angle of the movable truss to realize real-time linkage of mechanical actions.

[0015] Preferably, the indicator rod is fixed to the outer end of the linkage shaft with a radial arrangement structure, and can rotate synchronously with the linkage shaft to provide intuitive feedback on the real-time bending and opening angle of the tooling.

[0016] Preferably, the bearing platform is equipped with a limiting component, which includes two sets of slide rail blocks. The two sets of slide rail blocks are respectively arranged on opposite sides of the two first support bearing rollers. Each slide rail block is equipped with a set of vertical plates, and each slide rail block has a transverse lead screw installed inside. A frame is fixedly installed at the front end of the bearing platform. Driven gears are symmetrically installed on both sides inside the frame. The two driven gears are respectively connected to the transverse lead screws at corresponding positions. A driving gear is installed at the center of the frame. The driving gear meshes with the driven gears on both sides. A rotating control lever is fixedly connected to the front end of the driving gear.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention utilizes a combination of angle steel supports, a load-bearing platform, a movable truss, a strip groove, and a T-shaped handle screw structure. The overall tooling is assembled on-site using conventional steel profiles, resulting in a lightweight structure that allows for flexible transport and assembly. This adapts to multi-point, dispersed processing scenarios on construction sites, overcoming the drawbacks of traditional large-scale bending equipment that is fixed in place and has limited mobility. Furthermore, relying on the adaptive sliding of the strip groove combined with the locking and positioning of the T-shaped handle screw, the bending angle can be continuously adjusted and stably locked. Multi-angle bending processing can be completed without changing molds, effectively solving the technical problems of high transportation costs, easy deformation correction of components, and limited bending angles of traditional equipment in traditional factories. This significantly reduces the overall cost of on-site flat steel component processing. This invention utilizes a platform support, a first support bearing roller, a truss support, a second pressure bearing roller, and a hand crank handle to create a manual bending structure with double roller support and single-point lever pressure. During bending, the flat steel workpiece and the roller structure make stable and close contact, resulting in uniform stress on the workpiece and controllable and uniform contact friction. This effectively avoids processing defects such as twisting, warping, and surface indentations during the bending of the flat steel, ensuring the appearance and dimensional accuracy of the workpiece. At the same time, the lever-type manual force application structure can significantly reduce manual labor and simplify the bending operation process. This invention, through the cooperation of an angle auxiliary marking component and an angle memory marking component, relies on the linkage shaft to rotate synchronously with the hinge, enabling the indicator rod and the dial to cooperate to achieve real-time visual and accurate reading of the bending angle. This is different from the rough operation method of manually estimating angles based on experience, eliminating human operation errors. At the same time, through the sliding cooperation of the outer ring groove, slider and angle calibration indicator strip, commonly used bending angles can be calibrated at fixed points. In subsequent batch processing, the bending opening can be quickly calibrated without repeated adjustments and calibrations. This invention, by setting a limiting component and adopting a single-rod centralized control and dual-side synchronous centering adjustment method, can achieve lateral constraint throughout the entire flat steel bending process, limiting the lateral slippage, eccentric deviation and force torsion of the workpiece during roller pressure and metal plastic deformation. No operator needs to have bending processing experience and skilled operation techniques, and new employees and temporary workers can quickly get started and work independently. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the load-bearing platform of the assembled flat steel bending fixture of the present invention; Figure 2 This is a schematic diagram of the flat steel bending operation state structure on the bearing platform of the assembled flat steel bending fixture of the present invention. Figure 3 This is a schematic diagram of the first support bearing roller structure of the assembled flat steel bending fixture of the present invention; Figure 4 This is a bottom view of the load-bearing platform of the assembled flat steel bending fixture of the present invention. Figure 5 The assembled flat steel bending fixture of the present invention Figure 4 Schematic diagram of a partially truncated enlarged structure of the central load-bearing platform; Figure 6 This is a partial enlarged structural diagram of the movable truss of the prefabricated flat steel bending fixture of the present invention. Figure 7 The assembled flat steel bending fixture of the present invention Figure 6 A schematic diagram of the enlarged structure with partial truncation at point A in the middle; Figure 8 The assembled flat steel bending fixture of the present invention Figure 6 A partial truncated enlarged structural diagram at point B; and Figure 9 This is a schematic diagram of the limiting component structure of the assembled flat steel bending fixture of the present invention.

[0019] The attached figures are labeled as follows: 1. Angle steel bracket; 2. Bearing platform; 3. Platform bracket; 4. First support bearing roller; 5. Hinge; 6. Movable truss; 7. Truss bracket; 8. Second pressure bearing roller; 9. Strip groove; 10. T-shaped grip screw; 11. Hand crank handle; 12. Angle auxiliary marking component; 1200. Linkage shaft; 1201. Disc; 1202. Through-hole cylinder; 1203. Indicator rod; 1204. Dial; 13. Angle memory marking component; 1300. Outer ring groove; 1301. Slider; 1302. U-shaped block; 1303. Angle calibration indicator bar; 14. Limiting component; 1400. Slide rail block; 1401. Vertical plate; 1402. Horizontal screw; 1403. Frame; 1404. Driven gear; 1405. Driving gear; 1406. Rotation control lever. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Example 1: like Figures 1 to 8 As shown, the present invention provides an assembled flat steel bending fixture, including an angle steel bracket 1, a bearing platform 2 fixedly installed on the angle steel bracket 1, a pair of platform supports 3 fixedly installed at the upper end of the bearing platform 2, a first support bearing roller 4 installed inside each platform support 3, a hinge 5 installed at the end of the bearing platform 2, and a movable truss 6 arranged above the bearing platform 2 rotatably connected to the bearing platform 2 through the hinge 5, a truss support 7 fixedly installed at the front end of the movable truss 6, a second pressure bearing roller 8 installed inside the truss support 7, a strip groove 9 opened at the position of the movable truss 6 away from the hinge 5, a T-shaped handle screw 10 assembled with the bearing platform 2 passing through the inside of the strip groove 9, and a hand crank handle 11 fixedly connected at the end of the truss support 7 away from the movable truss 6, the hand crank handle 11 and the second pressure bearing roller 8 forming a linkage cooperation.

[0025] The above scheme is adopted: the angle steel bracket 1 is formed by welding equal-sided angle steel into a frame support structure. The specifications of the angle steel are selected according to the overall load-bearing requirements of the tooling. The outer ring of the first support bearing roller 4 is set with a smooth outer circle rotating body structure. Its outer circle working surface is polished and the surface is smooth and burr-free to avoid scratching the surface of the flat steel workpiece during bending.

[0026] Of course, the load-bearing platform 2 can be a steel load-bearing platform.

[0027] like Figures 2 to 8 As shown, the side of the bearing platform 2 is equipped with an angle auxiliary marking component 12. The angle auxiliary marking component 12 is equipped with a linkage shaft 1200 that drives the hinge 5. A disc 1201 is fixedly mounted on the end of the bearing platform 2 away from the hinge 5. A through-hole cylinder 1202 is fixedly connected to the center of the disc 1201. The linkage shaft 1200 passes through the through-hole cylinder 1202 and an indicator rod 1203 for angle indication is fixedly installed on the exposed side end. A scale 1204 is fixedly attached to the end face of the disc 1201 facing away from the hinge 5.

[0028] The above scheme is adopted: the hinge 5 can be a heavy-duty hinge or a customized pivot hinge structure, which includes a fixed hinge seat, a movable hinge seat and a hinge shaft passing between the two. The fixed hinge seat is fixedly installed on the upper surface of the end of the bearing platform 2 by bolts, and the movable hinge seat is fixedly installed on the lower surface of the root of the movable truss 6 by bolts. The hinge shaft passes through the shaft holes of the fixed hinge seat and the movable hinge seat. A self-lubricating bushing or rolling bearing can be installed in the shaft hole to reduce the frictional resistance during the rotation of the hinge shaft. The two ends of the hinge shaft are provided with shaft shoulders and cotter pin holes, and axial anti-disengagement is achieved by cotter pins.

[0029] like Figures 2 to 8 As shown, an angle memory marking component 13 is matched and disposed on the outer side of the angle auxiliary marking component 12. The angle memory marking component 13 includes an outer ring groove 1300 circumferentially formed on the outer peripheral surface of the disk 1201. A plurality of sliders 1301 are slidably mounted inside the groove of the outer ring groove 1300. A U-shaped block 1302 is fixedly connected to one end of each slider 1301 away from the outer ring groove 1300. An angle calibration indicator strip 1303 is fixedly mounted at the end of the U-shaped block 1302. 03 forms a alignment mark with the dial 1204, enabling fixed-point calibration and rapid alignment of bending angles. The angle steel bracket 1 and the bearing platform 2 are assembled into an integral structure using a fixed rigid connection method, used to continuously bear the vertical load and lateral force during tooling operation. A pair of platform brackets 3 are symmetrically arranged and assembled on the upper surface of the bearing platform 2. The two sets of platform brackets 3 and the truss bracket 7 have the same structural form and assembly specifications. The first support bearing roller 4 and the second pressure bearing roller 8 adopt... The structure features a smooth outer circular rotating body, designed to fit and support flat steel workpieces. Hinge 5 is a hinged rotating connection structure mounted between the bearing platform 2 and the movable truss 6, providing a stable rotation fulcrum for the movable truss 6. T-shaped grip screw 10 is a vertical assembly structure fixed to the bearing platform 2. T-shaped grip screw 10 can slide and adapt within the slot 9. T-shaped grip screw 10 achieves clamping and locking and releasing / resetting functions through rotation and lifting. Hand crank 11 is an external cantilever structure fixed to the end of the truss support 7, forming a convenient manual force application point for manual driving to output bending action. Linkage shaft 1200 forms a synchronous linkage structure with hinge 5 and rotates synchronously with the swing angle of the movable truss 6, enabling real-time linkage of mechanical actions. Indicator rod 1203 is a radially arranged structure fixed to the outer end of linkage shaft 1200 and can rotate synchronously with linkage shaft 1200 in the circumferential direction, providing intuitive feedback on the real-time bending and opening angle of the tooling.

[0030] The above solution is adopted: the through-hole cylinder 1202 is a tubular structure, and its inner hole is clearance-fitted with the linkage shaft 1200. The through-hole cylinder 1202 is welded or interference-fitted and fixed in the center hole of the disc 1201, and sleeved on the outside of the linkage shaft 1200, continuously forming an auxiliary straightening and limiting effect on the linkage shaft 1200, effectively ensuring the coaxiality and rotational stability of the linkage shaft 1200 throughout the entire rotation process.

[0031] Working principle and usage process of Embodiment 1 of the present invention: During operation, the overall tooling structure is first supported by angle steel bracket 1. A support platform 2 is fixedly mounted on top of the angle steel bracket 1, maintaining a horizontal and stable installation throughout the operation. Simultaneously, a pair of platform supports 3 are symmetrically arranged on the upper end of the support platform 2. These platform supports 3 form a fixed limiting support structure for the first support bearing roller 4 mounted internally. The operator smoothly places the flat steel workpiece to be processed on the upper support position of the first support bearing roller 4, ensuring the surface of the flat steel workpiece is completely in contact with the outer circular support surface of the first support bearing roller 4. This completes the positioning and preparation work before workpiece processing. After workpiece positioning, the hinge 5 mounted at the end of the support platform 2 provides a rotational support point for the movable truss 6. The movable truss 6 can be adjusted by opening and closing relative to the support platform 2 using the hinge structure of the hinge 5. The operator slowly adjusts the swing amplitude of the movable truss 6 according to the required bending angle of the workpiece, gradually bringing the movable truss 6 closer to and in contact with the flat steel workpiece to be processed. During the angle adjustment of the movable truss 6, the strip groove 9 on the surface of the movable truss 6 produces an adaptive sliding motion relative to the vertically arranged T-shaped handle screw 10. The T-shaped handle screw 10 always maintains a fixed assembly state with the bearing platform 2. The sliding stroke reserved by the strip groove 9 is fully adapted to the overall swing trajectory of the movable truss 6, thereby avoiding structural interference problems during the angle adjustment process. When the opening and closing angle of the movable truss 6 is adjusted to the required opening, the operator manually operates the hand crank handle 11 to perform a reciprocating swing action. The hand crank handle 11 synchronously drives the truss support 7 connected at the end to swing. The second pressure bearing roller 8 installed inside the truss support 7 moves synchronously with the truss support 7. The second pressure bearing roller 8 gradually squeezes and adheres to the surface of the flat steel workpiece. With the fixed support of the bottom first support bearing roller 4, a uniform bending force is applied to the flat steel workpiece, and the continuous bending and forming operation of flat steel at different angles is gradually completed. While the movable truss 6 swings and adjusts throughout its entire range, the rotation of the hinge 5 synchronously drives the linkage shaft 1200 inside the angle auxiliary marking component 12 to rotate synchronously. The linkage shaft 1200 changes its rotation amplitude according to the swing angle of the movable truss 6. The linkage shaft 1200 synchronously drives the disc 1201 fixedly mounted at the shaft end to rotate circumferentially. The through-hole cylinder 1202 fixedly set in the middle of the disc 1201 is sleeved on the outside of the linkage shaft 1200. The through-hole cylinder 1202 continuously provides auxiliary straightening limit for the linkage shaft 1200. The positioning function effectively ensures the coaxiality and rotational stability of the linkage shaft 1200 throughout its entire rotation process. The indicator rod 1203, fixedly installed on the exposed side of the linkage shaft 1200, rotates synchronously with the linkage shaft 1200 in the circumferential direction. During the rotation of the indicator rod 1203, it continuously aligns with the scale 1204 fixedly installed on the end face of the disc 1201 to complete real-time angle calibration. The operator can intuitively read the current real-time bending opening and closing angle of the tooling through the scale markings on the scale 1204, thereby achieving precise control of the bending angle. Meanwhile, the outer ring groove 1300 on the outer periphery of the disc 1201 provides a sliding path for the slider 1301. According to the common workpiece processing angle requirements on the construction site, the staff can manually adjust the circumferential sliding position of the slider 1301 inside the outer ring groove 1300. After the slider 1301 is adjusted to the corresponding angle position, the slider 1301 drives the angle calibration indicator 1303 to be positioned synchronously through the U-shaped block 1302 fixed at the end, so that the angle calibration indicator 1303 accurately corresponds to the corresponding scale position of the scale 1204, completing the fixed-point marking operation of the commonly used bending angle. After the angle calibration is completed, in the subsequent processing of flat steel workpieces of the same specification, the staff can directly rely on the marked point of the angle calibration indicator 1303 to quickly calibrate the bending opening of the tooling without repeated calibration and angle adjustment. At the same time, with the bidirectional contact and pressure of the first support bearing roller 4 and the second pressure bearing roller 8 on the flat steel workpiece, the continuous bending and forming operation of flat steel of different specifications and angles can be completed, effectively improving the consistency of workpiece processing and work efficiency.

[0032] Example 2: like Figure 9As shown, a limiting component 14 is installed on the bearing platform 2. The limiting component 14 includes two sets of slide rail blocks 1400, which are respectively arranged on opposite sides of the two first support bearing rollers 4. Each slide rail block 1400 is equipped with a set of vertical plates 1401, and each slide rail block 1400 has a transverse screw 1402 installed inside. The two transverse screws 1402 are threadedly engaged with the corresponding set of vertical plates 1401, and the threads of the two transverse screws 1402 are opposite in direction to achieve [the desired effect]. The two sets of vertical plates 1401 move synchronously in opposite directions or back directions. A frame 1403 is fixedly installed at the front end of the bearing platform 2. Driven gears 1404 are symmetrically assembled on both sides inside the frame 1403. The two driven gears 1404 are respectively connected to the corresponding horizontal lead screws 1402. A drive gear 1405 is assembled at the center of the frame 1403. The drive gear 1405 meshes with the driven gears 1404 on both sides. A rotating control lever 1406 is fixedly connected to the front end of the drive gear 1405.

[0033] Using the above solution: This second embodiment adds a limiting component 14 to the structure of the first embodiment, which can be adapted to the working scenarios of novice operators on the construction site.

[0034] Working principle and usage process of Embodiment 2 of the present invention: In use, novice operators place the flat steel workpiece to be processed between the two sets of first support bearing rollers 4. Without needing to separately align and calibrate the workpiece center, simply rotating the control lever 1406 in one direction will drive the drive gear 1405 to mesh synchronously, causing the driven gears 1404 on both sides to rotate symmetrically in opposite directions. The driven gears 1404 on both sides will then drive the corresponding transverse lead screws 1402 to rotate synchronously. Utilizing the threaded sliding fit between the transverse lead screws 1402 and the vertical plates 1401, the two sets of vertical plates 1401 will be driven along the slide rails 140... The 0-axis performs synchronous or opposite horizontal sliding movements to achieve one-click synchronous adjustment and centering of the double-sided limit distance. After adjustment, the self-locking performance of the gear meshing and the thread structure of the transverse lead screw 1402 can stably lock the limit position of the vertical plate 1401. In the subsequent flat steel bending and pressing process, the lateral clamping limit of the workpiece by the two vertical plates 1401 completely limits the left and right deviation, deviation and center line deviation of the flat steel workpiece during the force process. The operation steps are simple and the fault tolerance rate is extremely high, which is suitable for beginners to quickly get started.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefabricated flat steel bending fixture, comprising an angle steel bracket (1), wherein a bearing platform (2) is fixedly installed on the angle steel bracket (1), characterized in that, A pair of platform supports (3) are fixedly installed at the upper end of the bearing platform (2). Each of the platform supports (3) is equipped with a first support bearing roller (4). A hinge (5) is installed at the end of the bearing platform (2). The bearing platform (2) is rotatably connected to a movable truss (6) arranged above the bearing platform (2) through the hinge (5). A truss support (7) is fixedly installed at the front end of the movable truss (6). A second pressure bearing roller (8) is installed inside the truss support (7). A strip groove (9) is opened at the position of the movable truss (6) away from the hinge (5). A T-shaped handle screw (10) that is assembled with the bearing platform (2) passes through the inside of the strip groove (9). A hand crank handle (11) is fixedly connected at the end of the truss support (7) away from the movable truss (6). The hand crank handle (11) and the second pressure bearing roller (8) form a linkage cooperation. An angle auxiliary marking component (12) is mounted on the side of the bearing platform (2). The angle auxiliary marking component (12) is equipped with a linkage shaft (1200) that drives the hinge (5). A disc (1201) is fixedly mounted on the end of the bearing platform (2) away from the hinge (5). A through-hole cylinder (1202) is fixedly connected to the center of the disc (1201). The linkage shaft (1200) passes through the through-hole cylinder (1202) and an indicator rod (1203) for angle indication is fixedly installed on the exposed side end. A scale (1204) is fixedly attached to the end face of the disc (1201) facing away from the hinge (5).

2. The assembled flat steel bending fixture according to claim 1, characterized in that, An angle memory mark component (13) is matched and provided on the outer side of the angle auxiliary mark component (12). The angle memory mark component (13) includes an outer ring groove (1300) circumferentially opened on the outer circumferential surface of the disc (1201). Several sliders (1301) are slidably assembled inside the groove of the outer ring groove (1300). A U-shaped block (1302) is fixedly connected to the end of each slider (1301) away from the outer ring groove (1300). An angle calibration indicator strip (1303) is fixedly assembled at the end of the U-shaped block (1302). The angle calibration indicator strip (1303) and the scale (1204) form a positioning mark matching structure to realize the fixed-point calibration and rapid alignment of the bending angle.

3. The assembled flat steel bending fixture according to claim 1, characterized in that, The angle steel bracket (1) and the bearing platform (2) are assembled into an integral structure by a fixed rigid connection method, which is used to bear the vertical load and lateral force during the tooling operation.

4. The assembled flat steel bending fixture according to claim 1, characterized in that, A pair of platform supports (3) are symmetrically arranged and assembled on the upper surface of the bearing platform (2). The two sets of platform supports (3) and truss supports (7) have the same structural form and assembly specifications.

5. The assembled flat steel bending fixture according to claim 1, characterized in that, The first support bearing roller (4) and the second pressure bearing roller (8) are configured with a smooth outer circular rotating body structure.

6. The assembled flat steel bending fixture according to claim 1, characterized in that, The hinge (5) is assembled between the bearing platform (2) and the movable truss (6) using a hinged rotating connection structure, and is used to provide a rotation fulcrum for the movable truss (6).

7. The assembled flat steel bending fixture according to claim 1, characterized in that, The T-shaped grip screw (10) adopts a vertical assembly structure and is fixedly matched with the bearing platform (2). The T-shaped grip screw (10) can slide and adapt in the strip groove (9).

8. The assembled flat steel bending fixture according to claim 1, characterized in that, The hand crank handle (11) is fixed to the end of the truss support (7) with an external cantilever structure, which is used to form a point for manual force application and then to achieve the output of bending action through manual drive.

9. The assembled flat steel bending fixture according to claim 1, characterized in that, The linkage shaft (1200) and the hinge (5) form a synchronous linkage structure and rotate synchronously with the swing angle of the movable truss (6) to realize real-time linkage of mechanical actions.

10. The assembled flat steel bending fixture according to claim 1, characterized in that, The bearing platform (2) is equipped with a limiting component (14), which includes two sets of slide rail blocks (1400). The two sets of slide rail blocks (1400) are respectively arranged on the opposite sides of the two first support bearing rollers (4). Each slide rail block (1400) is equipped with a set of vertical plates (1401). Each slide rail block (1400) is equipped with a transverse screw rod (1402). A frame (1) is fixedly installed at the front end of the bearing platform (2). 403), the two driven gears (1404) are symmetrically mounted on both sides inside the frame (1403). The two driven gears (1404) are respectively connected to the transverse lead screw (1402) at the corresponding position. The driving gear (1405) is mounted at the center of the frame (1403). The driving gear (1405) meshes with the driven gears (1404) on both sides. The front end of the driving gear (1405) is fixedly connected to the rotating control lever (1406).

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