Machine part reinforcing steel bar vertical bending device
By improving the lower and upper bending components of the rebar bending device and adopting hydraulic drive, auxiliary seat, and extrusion head structure, the problem of wrinkles at the inner corner of the rebar during bending was solved, realizing automated bending, reducing manual grinding operations, and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-02
- Publication Date
- 2026-03-20
AI Technical Summary
Existing rebar bending mechanisms often produce wrinkles at the inner corners of the bent rebars after bending, requiring manual grinding to smooth them out, which increases labor intensity and time consumption.
A mechanical component for vertical bending of reinforcing bars was designed. By improving the lower and upper bending components, including the auxiliary seat, extrusion head, and mating joint structure, it is ensured that no wrinkles are generated at the inner corners of the reinforcing bars during bending. The device is hydraulically driven to achieve automated bending.
This method achieves wrinkle-free inner corner bending of steel bars, eliminating the need for manual grinding, reducing labor consumption, and improving production efficiency.
Smart Images

Figure CN224011085U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to bridge workpiece processing technical field, concretely relates to a mechanical accessory steel bar vertical bending device. BACKGROUND
[0002] Workpiece steel bar refers to the steel material used for concrete and prestressed reinforced concrete, and its cross section is circular or square with rounded corners, including plain round steel bar, ribbed steel bar and twisted steel bar. Steel bar bending device is a mechanical equipment for bending steel bar into a specific shape, widely used in building, bridge, tunnel and other engineering. Main components: the main structure supporting the whole equipment, usually made of steel, to ensure the stability and durability of the equipment. Hydraulic system: provides power to drive the bending mechanism for bending operation. The hydraulic system includes hydraulic pump, hydraulic cylinder and hydraulic pipeline. Bending mechanism: including bending die and pressure head, used for bending steel bar into the required shape. The design of die and pressure head is determined according to the diameter and bending angle of steel bar. Control system: used for controlling the bending process, including manual control and automatic control. Automatic control system usually uses programmable logic controller and touch screen interface. Feeding mechanism: used for feeding steel bar into the bending position to ensure the stability of steel bar during bending.
[0003] The existing steel bar bending mechanism has wrinkles on the inner corner position of the bent steel bar, which needs to be ground flat, and the grinding operation is difficult. INVENTION CONTENTS
[0004] The utility model discloses a mechanical accessory steel bar vertical bending device, which solves the problems in the background technology.
[0005] The utility model discloses a mechanical accessory steel bar vertical bending device, which solves the problems in the background technology.
[0006] Further, the lower bending assembly comprises a top base fixedly connected to the upper end of the bearing column, and an auxiliary seat is fixedly arranged at the upper end of the top base, and a bottom groove is formed in the upper surface of the auxiliary seat. The upper bending assembly comprises a butt joint seat fixedly connected to the lower end of the telescopic rod, and a threaded hole is formed in the lower surface of the butt joint seat, and an extrusion head is detachably connected to the threaded hole. In use, the steel bar to be bent is placed above the auxiliary seat, the telescopic rod of the hydraulic cylinder moves downward to drive the extrusion head to move downward, the extrusion head is located above the steel bar, and the steel bar is bent under the action of the extrusion force, and the bent part is collected in the bottom groove, and the inner corner of the bent steel bar is not wrinkled due to the improvement of the extrusion head.
[0007] Further, the extrusion head comprises a butt joint pin, an outer thread corresponding to the threaded hole is arranged on the outer wall of the butt joint pin, a contact head is fixedly arranged at the lower end of the butt joint pin, and an arc-shaped clamping hole is arranged at the lower end of the contact head. In use, the surface of the arc-shaped clamping hole is in contact with the upper surface of the steel bar, and since the surface of the arc-shaped clamping hole is arc-shaped and the entire surface of the arc-shaped clamping hole has a force, the steel bar will not be extruded to produce wrinkles when being bent.
[0008] Further, the front side wall of the auxiliary seat is provided with a front side matching hole, and the rear side wall of the auxiliary seat is provided with a rear side matching hole, so that when the steel bar is placed above the auxiliary seat, the steel bar is clamped by the front side matching hole and the rear side matching hole to avoid lateral sliding of the steel bar during bending.
[0009] The utility model discloses the beneficial effect that through the improvement to lower bending assembly and upper bending assembly, the inner corner position of the bending of steel bar will not produce the wrinkle, and then saves the artificial grinding operation of getting rid of the wrinkle, alleviates the labor, saves the time. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is the front view structure schematic diagram of the utility model;
[0011] Figure 2 It is the right view structure schematic diagram of the utility model;
[0012] Figure 3 This is a three-dimensional structural diagram of the present invention;
[0013] Figure 4 For the present utility model Figure 3 Enlarged view of A in the middle.
[0014] In the diagram: 1. Base; 2. Front support column; 3. Rear support column; 4. Front crossbeam; 5. Rear crossbeam; 6. Top support plate; 7. Hydraulic cylinder; 8. Telescopic rod; 9. Bearing column; 10. Top seat; 11. Auxiliary seat; 12. Bottom groove; 13. Connecting seat; 14. Extrusion head; 15. Connecting pin; 16. Contact head; 17. Arc-shaped bayonet; 18. Front mating port; 19. Rear mating port; 20. Reinforcing bar. Detailed Implementation
[0015] The present invention will be further described below with reference to the accompanying drawings. It should be noted that all directional terms such as up, down, front, back, left, and right appearing in the present invention are in accordance with the following description. Figure 1 The directional terms used for reference are not intended to limit the present invention, but are merely for the purpose of more clearly explaining and interpreting the present invention. Example
[0016] like Figures 1-4 As shown, this embodiment discloses a vertical bending device for steel bars in mechanical parts, which includes a base 1. Two vertically extending front support columns 2 and two vertically extending rear support columns 3 are fixedly arranged on the upper surface of the base 1, and the front support columns 2 and the rear support columns 3 are arranged correspondingly. A front crossbeam 4 is fixedly arranged at the upper end of the two front support columns 2, and a rear crossbeam 5 is fixedly arranged at the upper end of the two rear support columns 3. A top support plate 6 is fixedly connected between the front crossbeam 4 and the rear crossbeam 5. A hydraulic cylinder 7 is fixedly arranged on the upper surface of the top support plate 6, and the telescopic rod 8 of the hydraulic cylinder 7 extends to the lower part of the top support plate 6. A bearing column 9 is arranged in the middle of the base 1 and below the telescopic rod 8. A lower bending assembly is arranged at the upper end of the bearing column 9, and an upper bending assembly is arranged at the lower end of the telescopic rod 8. By improving the lower and upper bending components, wrinkles will not form at the inner corner of the bend when the steel bar is bent, thus eliminating the need for manual grinding to remove wrinkles, reducing labor and saving time. Example
[0017] like Figures 1-4As shown, the mechanical assembly steel bar vertical bending device disclosed by the embodiment comprises a base 1, the upper surface of the base 1 is fixedly provided with two vertically extending front support columns 2 and two vertically extending rear support columns 3, the front support columns 2 and the rear support columns 3 are correspondingly arranged, the upper ends of the two front support columns 2 are fixedly provided with a front cross beam 4, the upper ends of the two rear support columns 3 are fixedly provided with a rear cross beam 5, a top bearing plate 6 is fixedly connected between the front cross beam 4 and the rear cross beam 5, the upper surface of the top bearing plate 6 is fixedly provided with a hydraulic cylinder 7, the telescopic rod 8 of the hydraulic cylinder 7 extends below the top bearing plate 6; a bearing column 9 is arranged at the middle position of the base 1 and below the telescopic rod 8, a lower bending assembly is arranged at the upper end of the bearing column 9, and an upper bending assembly is arranged at the lower end of the telescopic rod 8. Through the improvement of the lower bending assembly and the upper bending assembly, when the steel bar is bent, the inner corner position of the bent part of the steel bar will not produce wrinkles, thereby eliminating the manual grinding operation to remove the wrinkles, reducing the labor and saving the time.
[0018] In the embodiment, the lower bending assembly comprises a top base 10 fixedly connected to the upper end of the bearing column 9, the upper end of the top base 10 is fixedly provided with an auxiliary seat 11, and the upper surface of the auxiliary seat 11 is provided with a bottom groove 12. The upper bending assembly comprises a butt joint seat 13 fixedly connected to the lower end of the telescopic rod 8, the lower surface of the butt joint seat 13 is provided with a threaded hole, and the threaded hole is detachably connected with an extrusion head 14. In use, the steel bar to be bent is placed above the auxiliary seat 11, the telescopic rod 8 of the hydraulic cylinder 7 moves downward to drive the extrusion head 14 to move downward, the extrusion head 14 is placed above the steel bar, and the steel bar is bent under the action of the extrusion force, the bent part is collected in the bottom groove 12, and the inner corner of the bent steel bar does not produce wrinkles due to the improvement of the extrusion head 14.
[0019] In the embodiment, the extrusion head 14 comprises a butt joint pin 15, the outer wall of the butt joint pin 15 is provided with an outer thread corresponding to the threaded hole, the lower end of the butt joint pin 15 is fixedly provided with a contact head 16, and the lower end of the contact head 16 is provided with an arc-shaped clamping hole 17. In use, the surface of the arc-shaped clamping hole 17 is in contact with the upper surface of the steel bar, since the surface of the arc-shaped clamping hole 17 is arc-shaped and the entire surface of the arc-shaped clamping hole 17 has a force, therefore, the steel bar will not produce wrinkles when being bent.
[0020] In the embodiment, the front side wall of the auxiliary seat 11 is provided with a front side matching hole 18, and the rear side wall of the auxiliary seat 11 is provided with a rear side matching hole 19. Through the arrangement of the front side matching hole 18 and the rear side matching hole 19, when the steel bar is placed above the auxiliary seat 11, the steel bar is clamped tightly by the front side matching hole 18 and the rear side matching hole 19, so that the steel bar is prevented from sliding sideways when being bent.
[0021] The above merely is the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and conception of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.
Claims
1. A mechanical accessory for vertically bending reinforcing bars, comprising a base, characterized in that: The upper surface of the base is fixedly provided with two vertically extending front support columns and two vertically extending rear support columns, with the front support columns and rear support columns corresponding to each other. A front crossbeam is fixedly provided at the upper end of each of the two front support columns, and a rear crossbeam is fixedly provided at the upper end of each of the two rear support columns. A top support plate is fixedly connected between the front and rear crossbeams. A hydraulic cylinder is fixedly provided on the upper surface of the top support plate, and the telescopic rod of the hydraulic cylinder extends to the bottom of the top support plate. A bearing column is provided in the middle of the base, below the telescopic rod. A lower bending assembly is provided at the upper end of the bearing column, and an upper bending assembly is provided at the lower end of the telescopic rod. The lower bending assembly includes a top seat fixedly connected to the upper end of the bearing column, and an auxiliary seat is fixedly provided at the upper end of the top seat. A bottom groove is formed on the upper surface of the auxiliary seat. The upper bending assembly includes a docking seat fixedly connected to the lower end of the telescopic rod. A threaded hole is formed on the lower surface of the docking seat, and a pressing head is detachably connected inside the threaded hole.
2. The mechanical component steel bar vertical bending device according to claim 1, characterized in that: The extrusion head includes a mating pin, the outer wall of which is provided with an external thread corresponding to the threaded hole, and a contact head is fixedly provided at the lower end of the mating pin, the lower end of which is provided with an arc-shaped bayonet.
3. The mechanical component steel bar vertical bending device according to claim 2, characterized in that: The auxiliary seat has a front mating opening on its front side wall and a rear mating opening on its rear side wall.