Bolt bending machine for U-shaped bolt machining
By designing adjustment and limiting components, the problems of stress concentration and uneven force distribution during bolt bending are solved, achieving safe and stable bolt bending and improving the versatility of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU YONGMAO SPECIAL FASTENER CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-05-01
AI Technical Summary
Existing bolt bending machines are prone to stress concentration in bolts during the bending process, leading to bolt breakage. Furthermore, the clamping method is uneven, affecting safety and equipment applicability.
The system employs adjustment and limiting components. The curvature of the bending plate is adjusted via an electric telescopic rod and a lead screw structure. Combined with the limiting rod, the movement of the bolts is restricted, ensuring uniform force distribution and preventing bolts from splashing.
It improves the safety of the bolt bending process and the versatility of the equipment, ensuring that bolts are bent to the predetermined shape and size, reducing the risk of equipment damage and personnel injury.
Smart Images

Figure CN224181775U_ABST
Abstract
Description
A bolt bending machine for processing U-bolts Technical Field
[0001] This utility model relates to the field of bending machine technology, specifically a bolt bending machine for processing U-shaped bolts. Background Technology
[0002] A bolt bending machine is an industrial device specifically designed for bending bolts. It precisely bends bolts to achieve specific shapes and angles to meet the needs of various industrial applications.
[0003] CN220658847U discloses a bolt bending machine for processing U-bolts, including a base plate, a support plate on top of the base plate, a top plate on one side of the support plate, a hydraulic rod on top of the top plate, and an adjustable bending mechanism at the bottom of the hydraulic rod. The adjustable bending mechanism includes a fixed box installed at the bottom of the top plate, a through groove on the bottom surface of the fixed box, a motor at one end of the fixed box, and a threaded rod at the output end of the motor. By setting up an adjustable bending mechanism and a disassembly mechanism, and by adjusting the distance between the two downward pressure rollers, and by replacing the forming seat of the bending machine with different sizes according to actual needs, the device can be adjusted to process U-bolts of different specifications and sizes, thus improving the applicability of the device.
[0004] As shown in the above technology, the device can adjust the bending curvature of the bolt by adjusting the pressure roller. However, the device fixes the bolt by clamping it with a clamping plate, which causes uneven pressure distribution on the bolt surface during the bending process, resulting in stress concentration and making the bolt prone to breakage. Summary of the Invention
[0005] To address the shortcomings of existing technologies, this utility model provides a bolt bending machine for processing U-shaped bolts, which solves the problem of bolts easily breaking during the bending process.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a bolt bending machine for processing U-bolts, comprising:
[0007] A workbench is a platform used for bolt processing.
[0008] A bending plate is used to provide support for bolts during processing. The bending plate is mounted on the top of the worktable via a positioning shaft, which is located at the center of the bending plate.
[0009] An adjustment component is installed between the workbench and the bending plate to adjust the curvature of the bending plate.
[0010] A bending assembly, which is slidably mounted on the top of the workbench, is used to bend bolts.
[0011] The adjustment assembly includes a mounting rod, which is slidably mounted on the top of the workbench via a sliding assembly. Two eccentrically arranged connecting rings are rotatably mounted on the mounting rod, and a first electric telescopic rod is fixedly mounted on each of the two connecting rings. The output ends of the two first electric telescopic rods are movably connected to the two ends of the inner side of the bending plate, respectively.
[0012] Preferably, the adjustment assembly further includes two first fixed seats, both of which are fixedly installed at both ends of the inner side of the bending plate. Each of the two first fixed seats is rotatably mounted with a connector, and the two connectors are respectively fixedly connected to the output ends of the two first electric telescopic rods.
[0013] Preferably, the bending assembly includes a fixing box, which is fixedly installed on the top of the workbench. The fixing box has two first sliding grooves, and a bidirectional lead screw is rotatably installed inside the fixing box. A first threaded block is slidably installed at each of the two first sliding grooves. The two first threaded blocks are respectively threaded onto both ends of the bidirectional lead screw. A second electric telescopic rod is fixedly installed on each of the two first threaded blocks. A second fixed seat is fixedly installed at the output end of the second electric telescopic rod. A bending roller is rotatably installed inside the second fixed seat. A first motor is fixedly installed at one end of the fixing box, and the output end of the first motor passes through the fixing box and is fixedly connected to the bidirectional lead screw.
[0014] Preferably, the sliding assembly includes a second slide groove, which is formed on the top of the worktable. A second threaded block is slidably installed in the second slide groove. The bottom end of the mounting rod passes through the second slide groove and is fixedly installed on the second threaded block. A lead screw is rotatably installed on the bottom of the worktable. The second threaded block is threaded onto the lead screw. A second motor is fixedly installed on the bottom of the worktable. The output end of the second motor is fixedly connected to the lead screw.
[0015] Preferably, the outer end of the bending plate is provided with a bending groove.
[0016] Preferably, limit components are installed at both ends of the outer side of the bending plate. The limit components include a third fixed seat and a fourth fixed seat. The third fixed seat and the fourth fixed seat are respectively fixedly installed at the upper and lower ends of the outer side of the bending plate. A limit rod is slidably installed at the third fixed seat. A knob is fixedly installed at the top of the limit rod. The lower end of the limit rod is threaded onto the fourth fixed seat.
[0017] Beneficial effects
[0018] This utility model provides a bolt bending machine for processing U-shaped bolts. Compared with the prior art, it has the following advantages:
[0019] 1. This U-bolt processing bolt bending machine, through the setting of an adjustment component, realizes the adjustment of the curvature of the bending plate, ensuring the safety of the bolt during the bending process. At the same time, it can ensure that the bolt is bent according to the predetermined shape and size, and can be adjusted according to bolts with different curvature requirements, thus improving the versatility of the device.
[0020] 2. This U-bolt processing bolt bending machine, by setting a limit component, effectively avoids the risk of bolts flying out due to uneven force during bending, protects the safety of operators, and also reduces the possibility of equipment damage. Attached Figure Description
[0021] Figure 1 is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 is a top view of this utility model;
[0023] Figure 3 is a partial structural schematic diagram of this utility model;
[0024] Figure 4 is a structural schematic diagram of the bending plate and limiting component in this utility model;
[0025] Figure 5 is a schematic diagram of the disassembled bending component in this utility model.
[0026] In the diagram: 1. Workbench; 2. Bending plate; 3. Positioning shaft; 4. Adjustment assembly; 41. Mounting rod; 42. Connecting ring; 43. First electric telescopic rod; 44. First fixed seat; 45. Connector; 5. Bending assembly; 51. Fixed box; 52. First slide groove; 53. Two-way lead screw; 54. First threaded block; 55. Second electric telescopic rod; 56. Second fixed seat; 57. Bending roller; 58. First motor; 6. Sliding assembly; 61. Second slide groove; 62. Second threaded block; 63. Lead screw; 64. Second motor; 7. Bending groove; 8. Limiting assembly; 81. Third fixed seat; 82. Fourth fixed seat; 83. Limiting rod; 84. Knob. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] Referring to Figures 1-5, this utility model provides the following two technical solutions:
[0029] First embodiment: A bolt bending machine for processing U-bolts, comprising:
[0030] Workbench 1 is used to provide a platform for bolt processing;
[0031] The bending plate 2 is used to provide support for the bolts during processing. The bending plate 2 is mounted on the top of the worktable 1 via the positioning shaft 3, which is located at the center of the bending plate 2.
[0032] Adjustment component 4 is installed between the workbench 1 and the bending plate 2 to adjust the curvature of the bending plate 2.
[0033] Bending assembly 5 is slidably mounted on the top of workbench 1 for bending bolts;
[0034] The adjustment assembly 4 includes a mounting rod 41, which is slidably mounted on the top of the workbench 1 via a sliding assembly 6. Two eccentrically arranged connecting rings 42 are rotatably mounted on the mounting rod 41. A first electric telescopic rod 43 is fixedly mounted on each of the two connecting rings 42. The output ends of the two first electric telescopic rods 43 are movably connected to the two ends of the inner side of the bending plate 2, respectively. The assembly also includes two first fixed seats 44, which are fixedly mounted on the two ends of the inner side of the bending plate 2. A connector 45 is rotatably mounted on each of the two first fixed seats 44. The two connectors 45 are fixedly connected to the output ends of the two first electric telescopic rods 43, respectively.
[0035] The bending assembly 5 includes a fixed box 51, which is fixedly installed on the top of the workbench 1. The fixed box 51 has two first sliding grooves 52. A bidirectional lead screw 53 is rotatably installed inside the fixed box 51. A first threaded block 54 is slidably installed at each of the two first sliding grooves 52. The two first threaded blocks 54 are respectively threaded onto the two ends of the bidirectional lead screw 53. A second electric telescopic rod 55 is fixedly installed on each of the two first threaded blocks 54. A second fixed seat 56 is fixedly installed at the output end of the second electric telescopic rod 55. A bending roller 57 is rotatably installed inside the second fixed seat 56. A first motor 58 is fixedly installed at one end of the fixed box 51. The output end of the first motor 58 passes through the fixed box 51 and is fixedly connected to the bidirectional lead screw 53.
[0036] The sliding assembly 6 includes a second slide groove 61, which is formed on the top of the worktable 1. A second threaded block 62 is slidably installed in the second slide groove 61. The bottom end of the mounting rod 41 passes through the second slide groove 61 and is fixedly installed on the second threaded block 62. A lead screw 63 is rotatably installed on the bottom of the worktable 1. The second threaded block 62 is threaded onto the lead screw 63. A second motor 64 is fixedly installed on the bottom of the worktable 1. The output end of the second motor 64 is fixedly connected to the lead screw 63.
[0037] By simultaneously activating the two first electric telescopic rods 43, the extension and retraction of the two first electric telescopic rods 43 causes the two ends of the bending plate 2 to move. Since the center of the bending plate 2 is mounted on the top of the worktable 1 via the positioning shaft 3, the two ends of the bending plate 2 will synchronously move closer to or further away from the mounting rod 41. At this time, the connecting ring 42 will drive the first electric telescopic rods 43 to rotate on the mounting rod 41, thereby adjusting the curvature of the bending plate 2 to adapt to the bending requirements of bolts of different specifications. At the same time, the position of the mounting rod 41 can be adjusted through the sliding component 6. The second motor 64 is activated to drive the lead screw 63 to rotate, which in turn drives the second threaded block 62 and the mounting rod 41 along the path. The second sliding groove 61 slides to adjust the position of the mounting rod 41 and the bending center of the bending plate 2, thereby expanding the curvature adjustment range of the bending plate 2 and adapting to the bending requirements of bolts of different specifications, thus improving the versatility and applicability of the equipment. By controlling the extension and retraction of the second electric telescopic rod 55, the bending roller 57 is driven to move up and down to bend the bolt. At the same time, the first motor 58 can drive the bidirectional lead screw 53 to rotate, so that the two first threaded blocks 54 move closer or further apart, thereby driving the second electric telescopic rod 55 and the bending roller 57 to move, realizing the bending operation of bolts in different positions.
[0038] The second embodiment differs from the first embodiment in that a bending groove 7 is provided on the outer end of the bending plate 2.
[0039] Limiting components 8 are installed at both ends of the outer side of the bending plate 2. The limiting components 8 include a third fixing seat 81 and a fourth fixing seat 82. The third fixing seat 81 and the fourth fixing seat 82 are respectively fixedly installed at the upper and lower ends of the outer side of the bending plate 2. A limiting rod 83 is slidably installed at the third fixing seat 81. A knob 84 is fixedly installed at the top of the limiting rod 83. The lower end of the limiting rod 83 is threaded onto the fourth fixing seat 82.
[0040] By setting the bending groove 7, space is provided for the bent part of the bolt during the bending process, making the bending work more stable. Before bending the bolt, the operator can turn the knob 84 to connect the limiting rod 83 to the fourth mounting seat threadedly, thereby limiting the range of movement of the bolt during the bending process and preventing the bolt from flying out due to uneven force. After the bending operation is completed, the operator can turn the knob 84 again to disengage the lower end of the limiting rod 83 from the fourth fixing seat 82 threadedly, and then slide the limiting rod 83 upward to release the limitation on the bolt, making it easy to remove the bent bolt.
[0041] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.
[0042] In use, the bolt to be bent is placed in the bending groove 7 on the bending plate 2. By rotating the knob 84, the limiting rod 83 is threadedly connected to the fourth mounting base to limit the bolt to be bent. According to the bolt specifications and bending requirements, the first motor 58 is started, driving the bidirectional lead screw 53 to rotate. The rotation of the bidirectional lead screw 53 causes the two first threaded blocks 54 to move closer or further apart, thereby moving the second electric telescopic rod 55 and the bending roller 57 to the appropriate position. The second electric telescopic rod 55 is started, driving the bending roller 57 to move downward to bend the bolt. At the same time, the second motor 64 and the two first electric telescopic rods 43 are started. The second motor 64 drives the lead screw 63 to rotate. The rotation of the lead screw 63 drives the second threaded block 62 and the mounting rod 41 to slide along the second slide groove 61, thereby adjusting the position of the mounting rod 41. The extension and retraction of the first electric telescopic rod 43 drives the two ends of the bending plate 2 to move. Since the center of the bending plate 2 is installed on the top of the worktable 1 through the positioning shaft 3, the two ends of the bending plate 2 will move closer to or further away from the mounting rod 41 simultaneously. The connecting ring 42 will drive the first electric telescopic rod 43 to rotate on the mounting rod 41, thereby adjusting the curvature of the bending plate 2. After the bolt is processed, the lower end of the limiting rod 83 is disengaged from the fourth fixed seat 82 by rotating the knob 84. Then, the limiting rod 83 is slid upward to remove the bent bolt.
[0043] 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.
[0044] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A bolt bending machine for processing U-shaped bolts, characterized in that, include: A workbench provides a platform for bolt processing; a bending plate supports the bolts during processing, the bending plate being mounted on top of the workbench via a positioning shaft at its center; an adjustment assembly is installed between the workbench and the bending plate to adjust the curvature of the bending plate; a bending assembly is slidably mounted on top of the workbench for bending the bolts; the adjustment assembly includes a mounting rod slidably mounted on top of the workbench via a sliding assembly, and two eccentrically arranged connecting rings are rotatably mounted on the mounting rod, each connecting ring having a first electric telescopic rod fixedly mounted thereon, the output ends of the two first electric telescopic rods being movably connected to the two inner ends of the bending plate.
2. The bolt bending machine for processing U-bolts according to claim 1, characterized in that: The adjustment assembly also includes two first fixed seats, both of which are fixedly installed at both ends of the inner side of the bending plate. Each of the two first fixed seats is rotatably mounted with a connector, and the two connectors are respectively fixedly connected to the output ends of the two first electric telescopic rods.
3. The bolt bending machine for processing U-bolts according to claim 1, characterized in that: The bending assembly includes a fixed box, which is fixedly installed on the top of the workbench. The fixed box has two first sliding grooves. A bidirectional lead screw is rotatably installed inside the fixed box. A first threaded block is slidably installed at each of the two first sliding grooves. The two first threaded blocks are respectively threaded onto the two ends of the bidirectional lead screw. A second electric telescopic rod is fixedly installed on each of the two first threaded blocks. A second fixed seat is fixedly installed at the output end of the second electric telescopic rod. A bending roller is rotatably installed inside the second fixed seat. A first motor is fixedly installed at one end of the fixed box. The output end of the first motor passes through the fixed box and is fixedly connected to the bidirectional lead screw.
4. A bolt bending machine for processing U-bolts according to claim 1, characterized in that: The sliding assembly includes a second slide groove, which is formed on the top of the worktable. A second threaded block is slidably installed in the second slide groove. The bottom end of the mounting rod passes through the second slide groove and is fixedly installed on the second threaded block. A lead screw is rotatably installed on the bottom of the worktable. The second threaded block is threaded onto the lead screw. A second motor is fixedly installed on the bottom of the worktable. The output end of the second motor is fixedly connected to the lead screw.
5. A bolt bending machine for processing U-bolts according to claim 1, characterized in that: The outer end of the bending plate is provided with a bending groove.
6. A bolt bending machine for processing U-bolts according to claim 1, characterized in that: Limiting components are installed at both ends of the outer side of the bending plate. The limiting components include a third fixing seat and a fourth fixing seat. The third fixing seat and the fourth fixing seat are respectively fixedly installed at the upper and lower ends of the outer side of the bending plate. A limiting rod is slidably installed at the third fixing seat. A knob is fixedly installed at the top of the limiting rod. The lower end of the limiting rod is threaded onto the fourth fixing seat.