Steel bar hoop bending machine with protection function
By designing an adjustable protective mechanism in the rebar bending machine, the problem of rebar warping caused by the fixed position of the protective cover was solved, thus improving processing accuracy and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGGE TOWNSTONE MASCH MFG CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-12
AI Technical Summary
The existing protective cover design of the rebar bending machine is not adjustable, which causes the long end of the rebar to curl up when bending longer rebars, affecting processing accuracy and posing a safety hazard.
An adjustable protective mechanism was designed, in which the position of the protective cover is adjusted by a threaded rod and a support mechanism to ensure uniform support during the bending of the steel bar and prevent it from warping.
This achieves uniform support for the reinforcing bars during bending, avoiding the warping problem caused by the fixed and non-adjustable position of the protective cover, and improving processing accuracy and safety.
Smart Images

Figure CN224222590U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rebar bending machines, and in particular to a rebar bending machine with protective function. Background Technology
[0002] In the past, steel bar processing relied on manual operation and lacked effective protection. Flying steel bar fragments and sparks could easily cause workplace accidents. Modern intelligent steel bar bending machines use PLC control systems to achieve fully automatic and high-precision processing. At the same time, progress has been made in protective mechanisms to reduce operational risks.
[0003] In existing technologies, common protective mechanisms for rebar bending machines have certain defects, especially in the design of the protective cover. They fail to fully consider the dynamic changes of rebars of different specifications during bending operations, thus causing a series of safety hazards. When bending long rebars, due to the length and rigidity of the rebar itself, the long end of the rebar will be subjected to a large bending moment during the bending process, causing it to lift up. Although the fixed position of the protective cover can restrict the rebar, the fixed position of the restriction and the different lengths at both ends of the rebar mean that the long end is prone to lifting up due to the lack of effective support. This not only affects the processing accuracy but may also pose a safety hazard to the operator. Therefore, it is necessary to improve the rebar bending machine with protective functions to solve the above problems. Utility Model Content
[0004] To overcome the problem that the fixed and non-adjustable position of the protective cover restricts the imbalance of the limiting points when bending long steel bars, and that the long end still has room to tilt up, which can lead to accidents.
[0005] The technical solution of this utility model is as follows: a steel bar bending machine with protective function, including a device shell, a first threaded rod and a support mechanism. The bottom of the device shell is provided with a support mechanism for support. The first threaded rod is rotatably connected inside the device shell. One end of the first threaded rod is fixedly connected to a first knob. The first threaded rod is threadedly connected to a sliding support. The sliding support is slidably connected inside the device shell. A protective cover is rotatably connected to the sliding support. A connecting plate is fixedly connected to the outside of the protective cover. A limit plate is fixedly connected to the connecting plate. A fixed shell is fixedly connected to the first threaded rod. A pull ring is slidably connected inside the fixed shell. One end of the pull ring is fixedly connected to a snap-fit block. The snap-fit block snaps into the inside of the limit plate. A first spring is fixedly connected between the snap-fit block and the fixed shell.
[0006] Preferably, the housing of the device has a slot at the position opposite to the first threaded rod, and the first threaded rod is rotatably connected inside the slot.
[0007] Preferably, the outer casing of the device has a groove at the relative position of the sliding support, and the sliding support is slidably connected inside the groove.
[0008] Preferably, the limiting plate has a slot at the relative position of the locking block, and the locking block is locked and connected inside the slot.
[0009] Preferably, a sliding plate is slidably connected inside the fixed shell, and a second spring is fixedly connected between the sliding plate and the fixed shell. A first support seat is fixedly connected to the outer shell of the device. A second threaded rod is rotatably connected inside the first support seat. A second knob is fixedly connected to the outside of the second threaded rod. A sliding seat is threadedly connected to the outside of the second threaded rod. The sliding seat is slidably connected inside the first support seat. A fixed plate body is fixedly connected to one end of the sliding seat. A first motor is fixedly connected inside the outer shell of the device. A rotating disk is fixedly connected to the output end of the first motor. A limit rod is fixedly connected to the rotating disk. A second support seat is provided on the rotating disk. A first fastening bolt is threadedly connected inside the rotating disk. A push plate body is provided inside the second support seat. A second fastening bolt is threadedly connected inside the second support seat.
[0010] Preferably, the fixed shell has a groove at the relative position of the sliding plate, and the sliding plate is slidably connected inside the groove.
[0011] Preferably, the first support seat has a groove at the relative position of the second threaded rod, and the second threaded rod is rotatably connected inside the groove.
[0012] Preferably, the support mechanism includes a third knob, which is rotatably connected inside the rotating groove. A sliding shaft is threadedly connected inside the third knob. A connecting rod is fixedly connected to the bottom of the device housing. The sliding shaft is slidably connected to the outside of the connecting rod. A support base is fixedly connected to the bottom of the sliding shaft. A support base is movably connected to one end of the support base.
[0013] Preferably, the device housing has a groove at the relative position of the third knob, and the third knob is rotatably connected inside the groove.
[0014] The beneficial effects of this utility model are as follows: The position of the sliding support is adjusted by rotating the first threaded rod, and the steel bar is more balancedly restricted by the protective cover. The position of the protective cover is fixed, and adjusting the position of the protective cover avoids interference with the bending process. During the bending process of the steel bar, the position of the protective cover can provide uniform and stable support, whether in the bending area or at the tail end. This avoids the problem that the position of the protective cover is fixed and cannot be adjusted, and that when bending long steel bars, the restriction points are unbalanced, and there is still space for the long end to lift up, which can lead to accidents. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0016] Figure 2This is a cross-sectional view of the outer casing of the device of this utility model;
[0017] Figure 3 This is a schematic diagram of the sliding support and its connected components of the present invention;
[0018] Figure 4 This is a schematic diagram of the fixed shell and its connected components of the present invention;
[0019] Figure 5 This is a schematic diagram of the first support base and its connected components of the present invention;
[0020] Figure 6 This is a schematic diagram of the second support base and its connected components of the present invention;
[0021] Figure 7 This is a schematic diagram of the support mechanism structure of this utility model.
[0022] Explanation of reference numerals in the attached drawings: 1. Device housing; 21. First threaded rod; 22. First knob; 23. Sliding support; 24. Protective cover; 25. Connecting plate; 26. Limiting plate; 27. Fixed shell; 28. Pull ring; 29. Snap-fit block; 210. First spring; 211. Sliding plate; 212. Second spring; 213. First support base; 214. Second threaded rod; 215. Second knob; 216. Sliding seat; 217. Fixed plate body; 218. First motor; 219. Rotating disk; 220. Limiting rod; 221. Second support base; 222. First fastening bolt; 223. Push plate body; 224. Second fastening bolt; 31. Third knob; 32. Sliding shaft; 33. Connecting rod; 34. Support base; 35. Support base. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0024] Please see Figure 1 - Figure 6This utility model provides an embodiment of a steel bar bending machine with protective function, including a device housing 1, a first threaded rod 21, and a support mechanism. The bottom of the device housing 1 is provided with a support mechanism for support. The first threaded rod 21 is rotatably connected inside the device housing 1. One end of the first threaded rod 21 is fixedly connected to a first knob 22. A sliding support 23 is threadedly connected to the outside of the first threaded rod 21. The sliding support 23 is slidably connected inside the device housing 1. A protective cover 24 is rotatably connected to the sliding support 23. A connecting plate 25 is fixedly connected to the outside of the protective cover 24. A limit plate 26 is fixedly connected to the connecting plate 25. A fixed shell 27 is fixedly connected to the first threaded rod 21. A pull ring is slidably connected inside the fixed shell 27. 28. One end of the pull ring 28 is fixedly connected to a snap-fit block 29, which snaps into the inside of the limiting plate 26. A first spring 210 is fixedly connected between the snap-fit block 29 and the fixed shell 27. During use, the support mechanism support device shell 1 is adjusted according to the ground conditions to prevent the device shell 1 from shaking during operation. During operation, according to the length of the rebar to be bent, the first knob 22 is turned to drive the first threaded rod 21 to rotate. When the first threaded rod 21 rotates, it drives the sliding support 23 to slide. When the sliding support 23 slides, it drives the protective cover 24 to move to the required position. Then, the pull ring 28 is pulled to drive the snap-fit block 29 to move. After opening the protective cover 24, the rebar is placed inside the protective cover 24 and then the protective cover 24 is closed. Then, the snap-fit block 29 is pushed by the first spring 210. The locking block 29 is pushed back to its original position and engages with the limiting plate 26, thereby restricting the opening of the protective cover 24 and protecting it during subsequent bending. The outer casing 1 has a groove at the relative position of the first threaded rod 21. The first threaded rod 21 is rotatably connected inside the groove, which restricts its rotation and prevents it from disengaging from the outer casing 1, thus affecting the sliding of the sliding support 23. The outer casing 1 also has a sliding groove at the relative position of the sliding support 23, which is slidably connected inside the groove. This groove restricts the sliding of the sliding support 23, allowing it to slide linearly inside the outer casing 1. This allows the position of the protective cover 24 to be adjusted and limited as needed. Plate 26 has a slot at a position opposite to the locking block 29. The locking block 29 is engaged with the inside of the slot. After the locking block 29 engages with the slot, the position of the limiting plate 26 and the connecting plate 25 is restricted, thereby limiting the rotation of the protective cover 24. A sliding plate 211 is slidably connected inside the fixed shell 27. A second spring 212 is fixedly connected between the sliding plate 211 and the fixed shell 27. A first support base 213 is fixedly connected to the outer shell 1. A second threaded rod 214 is rotatably connected inside the first support base 213. A second knob 215 is fixedly connected to the outside of the second threaded rod 214. A sliding seat 216 is threadedly connected to the outside of the second threaded rod 214. The sliding seat 216 is slidably connected inside the first support base 213.One end of the sliding seat 216 is fixedly connected to the fixed plate body 217. The first motor 218 is fixedly connected inside the outer casing 1 of the device. The output end of the first motor 218 is fixedly connected to the rotating disk 219. A limit rod 220 is fixedly connected to the rotating disk 219. A second support seat 221 is provided on the rotating disk 219. A first fastening bolt 222 is threaded inside the rotating disk 219. A push plate body 223 is provided inside the second support seat 221. A second fastening bolt 224 is threaded inside the second support seat 221. A second spring 212 provides a pushing force to the sliding plate 211. After pulling the pull ring 28, the locking block 29 is released from the locking with the limit plate 26, pushing the sliding plate 211 against the limit plate 26. 6. The upper part pops out, making it easier for workers to open the protective cover 24 and retrieve the bent steel bar. The fixed shell 27 has a groove at the relative position of the sliding plate 211. The sliding plate 211 is slidably connected inside the groove. The groove restricts the sliding of the sliding plate 211, preventing it from tilting and affecting the engagement of the limiting plate 26 and the locking block 29, while also preventing it from affecting the subsequent pop-out of the protective cover 24. The first support seat 213 has a rotating groove at the relative position of the second threaded rod 214. The second threaded rod 214 is rotatably connected inside the rotating groove. The rotating groove restricts the rotation of the second threaded rod 214, preventing it from disengaging from the first support seat 213 when rotating, thus preventing it from affecting the subsequent sliding of the sliding seat 216.
[0025] Please see Figure 1 , Figure 7 In this embodiment, the support mechanism includes a third knob 31, which is rotatably connected inside the rotating groove. A sliding shaft 32 is threadedly connected inside the third knob 31. A connecting rod 33 is fixedly connected to the bottom of the device housing 1. The sliding shaft 32 is slidably connected to the outside of the connecting rod 33. A support pedestal 34 is fixedly connected to the bottom of the sliding shaft 32. A support base 35 is movably connected to one end of the support pedestal 34. The distance between the support pedestal 34 and the support base 35 is adjusted by rotating the third knob 31 to provide support, thereby preventing the device housing 1 from shaking due to uneven ground and causing the reinforcing steel to spring up during subsequent bending. A rotating groove is provided on the device housing 1 at the relative position of the third knob 31. The third knob 31 is rotatably connected inside the rotating groove. The rotating groove restricts the rotation of the third knob 31 and prevents the third knob 31 from detaching from the device housing 1 when rotating.
[0026] During operation, depending on the required bending length of the reinforcing bar, the second knob 215 is rotated to drive the second threaded rod 214 to rotate. As the second threaded rod 214 rotates, it drives the sliding seat 216 to slide inside the first support seat 213. After sliding, the sliding seat 216 adjusts the position of the fixing plate body 217. If necessary, the push plate body 223 is installed and inserted into the second support seat 221. Then, the second fastening bolt 224 is threaded through the through hole of the push plate body 223 and connected to the second support seat 221. Based on the ground surface of the device housing 1, the third knob 31 is rotated and, in conjunction with the connecting rod 33, drives the sliding shaft 32 to slide, thereby adjusting the extension distance between the support support 34 and the support base 35 to prevent the device housing 1 from shaking during operation. During operation, depending on the length of the reinforcing bar to be bent, the first knob 22 is rotated to drive the second threaded rod 214 to rotate. When the threaded rod 21 rotates, it drives the sliding support 23 to slide. As the sliding support 23 slides, it moves the protective cover 24 to the desired position. Then, pulling the pull ring 28 moves the locking block 29, opening the protective cover 24. The reinforcing bar is then placed inside the protective cover 24, and the cover is closed. The first spring 210 pushes the locking block 29 back to its original position, engaging with the limiting plate 26, thus restricting the opening of the protective cover 24. Subsequent bending is achieved by the first motor 218, which drives the rotating disk 219 to rotate. The rotating disk 219 drives the second support 221 to rotate. When the second support 221 rotates, it bends through the cooperation of the push plate body 223 and the limiting rod 220. The protective cover 24 protects the reinforcing bar during bending, preventing it from warping and injuring workers.
[0027] Through the above steps, the position of the sliding support 23 is adjusted by rotating the first threaded rod 21, and the steel bar is more balanced by the protective cover 24. This solves the problem that the position of the protective cover is fixed and cannot be adjusted, the limiting points are unbalanced when bending long steel bars, and there is still space for the long end to lift up, which leads to accidents.
Claims
1. A steel bar bending machine with protective function, comprising a device housing (1), characterized in that: It also includes a first threaded rod (21) and a support mechanism. A support mechanism is provided at the bottom of the device housing (1). The first threaded rod (21) is rotatably connected inside the device housing (1). One end of the first threaded rod (21) is fixedly connected to a first knob (22). A sliding support (23) is threadedly connected to the outside of the first threaded rod (21). The sliding support (23) is slidably connected inside the device housing (1). A protective cover (24) is rotatably connected to the sliding support (23) to prevent… The cover (24) is fixedly connected to a connecting plate (25), a limiting plate (26) is fixedly connected to the connecting plate (25), a fixed shell (27) is fixedly connected to the first threaded rod (21), a pull ring (28) is slidably connected inside the fixed shell (27), a snap-fit block (29) is fixedly connected to one end of the pull ring (28), the snap-fit block (29) is snap-fit connected inside the limiting plate (26), and a first spring (210) is fixedly connected between the snap-fit block (29) and the fixed shell (27).
2. A steel bar bending machine with protective function according to claim 1, characterized in that: The outer casing (1) of the device has a rotating groove at a position relative to the first threaded rod (21), and the first threaded rod (21) is rotatably connected inside the rotating groove.
3. A steel bar bending machine with protective function according to claim 1, characterized in that: The outer casing (1) of the device has a groove at the relative position of the sliding support (23), and the sliding support (23) is slidably connected inside the groove.
4. A steel bar bending machine with protective function according to claim 1, characterized in that: The limiting plate (26) has a slot at the relative position of the snap-fit block (29), and the snap-fit block (29) is snap-fitted into the inside of the slot.
5. A steel bar bending machine with protective function according to claim 1, characterized in that: A sliding plate (211) is slidably connected inside the fixed shell (27). A second spring (212) is fixedly connected between the sliding plate (211) and the fixed shell (27). A first support base (213) is fixedly connected to the outer shell (1). A second threaded rod (214) is rotatably connected inside the first support base (213). A second knob (215) is fixedly connected to the outside of the second threaded rod (214). A sliding seat (216) is threadedly connected to the outside of the second threaded rod (214). The sliding seat (216) is slidably connected inside the first support base (213). One end is fixedly connected to a fixed plate body (217), the inside of the device housing (1) is fixedly connected to a first motor (218), the output end of the first motor (218) is fixedly connected to a rotating disk (219), a limit rod (220) is fixedly connected to the rotating disk (219), a second support seat (221) is provided on the rotating disk (219), a first fastening bolt (222) is threadedly connected inside the rotating disk (219), a push plate body (223) is provided inside the second support seat (221), and a second fastening bolt (224) is threadedly connected inside the second support seat (221).
6. A steel bar bending machine with protective function according to claim 5, characterized in that: The fixed shell (27) has a groove at the relative position of the sliding plate (211), and the sliding plate (211) is slidably connected inside the groove.
7. A steel bar bending machine with protective function according to claim 5, characterized in that: The first support (213) has a slot at the relative position of the second threaded rod (214), and the second threaded rod (214) is rotatably connected inside the slot.
8. A steel bar bending machine with protective function according to claim 1, characterized in that: The support mechanism includes a third knob (31), which is rotatably connected inside the rotating groove. The third knob (31) is threadedly connected to a sliding shaft (32). A connecting rod (33) is fixedly connected to the bottom of the device housing (1). The sliding shaft (32) is slidably connected to the outside of the connecting rod (33). A support base (34) is fixedly connected to the bottom of the sliding shaft (32). A support base (35) is movably connected to one end of the support base (34).
9. A steel bar bending machine with protective function according to claim 8, characterized in that: The outer casing (1) of the device has a groove at the relative position of the third knob (31), and the third knob (31) is rotatably connected inside the groove.