Adjustable wallboard rebar hook forming tool and method of use

Abstract

The application discloses a kind of adjustable wallboard steel bar pull hook forming tool and method, comprising: main body force arm handle;Standard guide portion is integrally formed with main body force arm handle, and between main body force arm handle it is 135 ° angle;Lateral reference card seat is connected to one side of standard guide portion and is outwardly extended to be arranged;Adjustable sliding module is installed on the side of standard guide portion away from lateral reference card seat, it can form a work opening for clamping steel bar between lateral reference card seat;Self-locking clamping mechanism passes through adjustable sliding module and is installed on standard guide portion, for clamping or releasing adjustable sliding module to make it close or away from standard guide portion.The pull hook forming tool can control the deviation of hook angle within ±1 °, ensure the reliability of forming precision and quality acceptance;Its adjustable sliding module makes single tool cover Φ6mm-Φ12mm full series commonly used steel bar specifications, without frequent tool replacement, strong universality.

Description

Technical Field

[0001] This application belongs to the field of steel reinforcement construction technology in building engineering, and in particular relates to an adjustable wall panel steel reinforcement hook forming tool and its usage method. Background Technology

[0002] In the construction of civil defense areas and cast-in-place walls in building engineering, steel bar hooks with 135° bends at both ends are often required to meet the requirements of seismic resistance and crack resistance. During on-site construction, for ease of installation, semi-finished hooks with one 135° bend and the other 90° bend are usually used. The operator first hooks the 135° end of the hook to the outer steel bar, and after the straight section of the hook is inserted into the inner steel bar, the 90° end is bent on-site using tools to finally form the standard shape with 135° bends at both ends.

[0003] However, traditional bending operations rely entirely on manual labor using pipe wrenches or simple spandrels. This is not only extremely labor-intensive, but also difficult to control the movement and rotation of the reinforcing bars in confined spaces due to varying floor and wall thicknesses and dense rebar spacing. This results in inconsistent bending angles, significant precision variations, and compromised quality. To address this issue, some simple bending tools have emerged, such as lever benders with welded nuts. While these tools utilize the lever principle to some extent to save effort, their fatal flaw is that after bending, the tool must be pulled out along the axis of the rebar for disassembly. In areas with crisscrossing rebars and extremely small clearances, such axial disassembly paths, requiring pulling along the rebar's axis, easily interfere with surrounding tied rebars, causing the tool to jam, become difficult to remove, or even require damage to the existing rebar skeleton. This not only increases additional repair work but also severely restricts construction efficiency, failing to meet the demands of modern industrialized construction for efficient and precise work. Summary of the Invention

[0004] This application provides an adjustable wall panel rebar hook forming tool and its usage method, which is particularly intended to solve the problems of interference during assembly and disassembly, poor versatility and low bending accuracy of existing rebar hook bending tools.

[0005] To solve at least one of the above-mentioned technical problems, the technical solution adopted in this application is:

[0006] An adjustable wall panel rebar hook forming tool, comprising:

[0007] Main lever arm handle;

[0008] A standard guide section is integrally formed with the main lever arm handle and forms a 135° angle with the main lever arm handle;

[0009] A lateral reference bracket is connected to one side of the standard guide portion and extends outward.

[0010] An adjustable sliding module is installed on the side of the standard guide away from the lateral reference seat, and an operating opening for clamping the reinforcing bar can be formed between it and the lateral reference seat.

[0011] A self-locking clamping mechanism passes through the adjustable sliding module and is mounted on the standard guide portion, for clamping or releasing the adjustable sliding module to make it fit tightly against or move away from the standard guide portion.

[0012] Furthermore, the surfaces on which the standard guide part mates with the lateral reference bracket and the adjustable sliding module are all flat surfaces.

[0013] Furthermore, the lateral reference holder is a flat plate structure, which is arranged along the axial direction of the standard guide and located on the axis of the standard guide, and is integrally connected and fixed with the standard guide.

[0014] Furthermore, a rectangular blind hole groove is provided on the axis of the standard guide part; a sliding groove that cooperates with the adjustable sliding module is provided on the wall of the blind hole groove near the self-locking clamping mechanism; and a threaded hole that cooperates with the clamping operating rod is provided on the side of the blind hole groove near the lateral reference card seat.

[0015] Furthermore, the self-locking clamping mechanism consists of a cam shaft, an eccentric cam block, and a clamping operating rod. The eccentric cam block is rotatably connected to the cam shaft. One end of the clamping operating rod is connected to the eccentric cam block, and the other end passes through the vertical section of the adjustable sliding module and directly engages with the threaded hole.

[0016] Furthermore, the eccentric cam block can rotate along the cam shaft axis to approach the standard guide portion, which is used to rigidly lock it on the standard guide portion after the adjustable sliding module is adjusted to the position, so as to form a standard working opening with the lateral reference card seat.

[0017] Furthermore, the adjustable sliding module is an integrated L-shaped rigid structure, with an adjustment hole on its vertical section that is aligned with the height direction of the standard guide section, and a scale corresponding to different steel bar specifications on the adjustment hole.

[0018] Furthermore, the scale ranges from 6mm, 8mm, 10mm, to 12mm.

[0019] Furthermore, the end of the main lever arm handle is fitted with a non-slip rubber handle.

[0020] A method for using the adjustable wall panel rebar hook forming tool as described above, comprising the following steps:

[0021] S1: Adjust the opening distance between the adjustable sliding module and the lateral reference seat according to the diameter of the steel bar to be bent, and control the self-locking clamping mechanism to tighten so that the working opening is consistent with the diameter of the steel bar to be bent.

[0022] S2: Hold the main lever arm handle and control the steel bar to be horizontally inserted into the working opening formed by the lateral reference seat and the adjustable sliding module, and operate the self-locking clamping mechanism to clamp the steel bar.

[0023] S3: Using the lateral reference seat as the bending fulcrum, apply a bending force to the main lever arm handle to make the standard guide part squeeze the end of the steel bar to be bent until the main lever arm handle is perpendicular to the bottom template or wall surface.

[0024] S4: Reverse the operation of the self-locking clamping mechanism to release the reinforcing bar and remove it horizontally from the side of the working opening.

[0025] This application discloses an adjustable wall panel rebar hook forming tool and its usage method, which stably controls the hook angle deviation within ±1°, ensuring the reliability of forming accuracy and quality acceptance. Its adjustable sliding module allows a single tool to cover the full range of commonly used rebar specifications from Φ6mm to Φ12mm, eliminating the need for frequent tool changes and offering high versatility. The side-opening clamping structure completely avoids the interference problem of axial disassembly and assembly in dense rebar areas, a problem inherent in traditional tools. Combined with a self-locking clamping mechanism that allows for one-second assembly and disassembly, the forming time for a single hook is reduced to less than 5 seconds, increasing efficiency by more than six times. Simultaneously, the long lever arm design reduces applied force by 80%, significantly reducing labor intensity. The entire tool is forged from high-strength alloy steel, making it sturdy and durable, requiring no daily maintenance costs. It achieves a comprehensive technical effect of high efficiency, precision, labor saving, and high versatility, demonstrating significant economic benefits and promotional value. Attached Figure Description

[0026] Figure 1 This is a perspective view of the adjustable wall panel rebar hook forming tool in this application;

[0027] Figure 2 This is a front view of the adjustable wall panel rebar hook forming tool in this application;

[0028] Figure 3 This is a perspective view of the L-shaped adjustable sliding module in this application;

[0029] Figure 4 This is a perspective view of the self-locking clamping mechanism in this application;

[0030] Figure 5This is a state diagram of the steel bar before the bending operation in this application;

[0031] Figure 6 This is a diagram showing the state of the bent steel bars after the work was performed in this application.

[0032] In the figure: 1. Main lever arm handle; 2. Lateral reference seat; 3. Self-locking clamping mechanism; 31. Cam shaft; 32. Eccentric cam block; 33. Clamping operating rod; 4. Adjustable sliding module; 5. Standard guide part; 51. Blind hole groove; 6. Anti-slip rubber handle; 7. Reinforcing bar. Detailed Implementation

[0033] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0034] This embodiment proposes an adjustable wall panel rebar hook forming tool, such as... Figure 1 , Figure 2 and Figure 3 As shown, the tool mainly consists of a main lever arm handle 1, a lateral reference seat 2, a self-locking clamping mechanism 3, an adjustable sliding module 4, a standard guide part 5, and an anti-slip rubber handle 6. The main lever arm handle 1, the lateral reference seat 2, and the standard guide part 5 are all integrally forged from high-strength chromium vanadium steel and undergo overall heat treatment to achieve a hardness of HRC40-HRC45. This ensures the tool's resistance to impact, wear, and elastic deformation under harsh working conditions, providing a rigid foundation for precise bending.

[0035] Specifically, the main lever arm handle 1 is a long, straight rod-like structure, with a non-slip rubber handle 6 fitted at its end to improve the stability and comfort of the grip. This handle, serving as a lever arm for bending operations, has an optimized length design that significantly reduces the force exerted by the operator. The standard guide part 5 is integrally machined with the main lever arm handle 1, forming a 135° angle between them. The cross-section of both the standard guide part 5 and the main lever arm handle 1 is an elongated oval structure, essentially a circle with the symmetrically arranged bow-shaped structures on both sides removed, resulting in a flat structure with flat sides and rounded ends. The flat surfaces facilitate the installation of the standard guide part 5 with the lateral reference bracket 2 and the adjustable sliding module 4, while the rounded ends facilitate operator control and prevent hand injuries.

[0036] The lateral reference bracket 2 is rigidly fixed to one side of the standard guide section 5 and extends outward. The lateral reference bracket 2 is a flat plate structure, fixed to the side wall of the standard guide section 5 only on one side, and is positioned along the axis of the standard guide section 5. To facilitate sliding engagement between the lateral reference bracket 2 and the adjustable sliding module 4, the reference surface of the lateral reference bracket 2 is used as a reference, and it is positioned on the axis of the standard guide section 5. This allows the adjustable sliding module 4 to reciprocate downwards relative to the lateral reference bracket 2, adjusting the size of the working opening to match the diameter of the reinforcing bar 7 to be bent. A rectangular blind hole groove 51 is provided on the axis of the standard guide section 5. A sliding groove that mates with the adjustable sliding module is provided on the side wall of the blind hole groove 51 near the self-locking clamping mechanism 3, and a threaded hole that mates with the clamping operating rod 33 is provided on the side of the blind hole groove 51 near the lateral reference bracket 2.

[0037] The adjustable sliding module 4 is installed on the side of the standard guide section 5 away from the lateral reference holder 2, forming an opening for clamping the rebar 7. Because the lateral reference holder 2 is positioned along the axis of the standard guide section 5 and perpendicular to the axis of the main lever arm handle 1, this design allows the tool to be directly inserted horizontally into the rebar 7 from the side, fundamentally avoiding the drawback of traditional tools that require axial insertion along the rebar 7 and cannot be removed or interfered with in areas with dense rebar 7. The lateral reference holder 2 also serves as a fulcrum for bending operations, precisely defining the bending position and straight section length of the rebar 7.

[0038] like Figure 3 As shown, the adjustable sliding module 4 is an integrated L-shaped rigid structure. Its vertical section is provided with a vertical adjustment hole that is consistent with the height direction of the standard guide part 5. The adjustable sliding module 4 forms a precision clearance fit with the standard guide part 5 through the adjustment hole. The adjustment hole is provided with a positioning scale corresponding to different specifications of steel bars 7. The scale ranges are 6mm, 8mm, 10mm and 12mm.

[0039] like Figure 1 , Figure 2 and Figure 3 As shown, the self-locking clamping mechanism 3 is installed on the left flange of the lateral reference bracket 2. The self-locking clamping mechanism 3 passes through the adjustable sliding module 4 and is installed on the standard guide 5, and is used to clamp or release the adjustable sliding module 4 so that it is close to or away from the standard guide 5.

[0040] In this embodiment, the self-locking clamping mechanism 3 is specifically an eccentric cam self-locking clamping assembly, which consists of three parts: a cam shaft 31, an eccentric cam block 32, and a clamping operating rod 33. The eccentric cam block 32 is rotatably connected to the cam shaft 31, and the eccentric cam block 32 is movably connected to the clamping operating rod 33. The clamping operating rod 33 is a threaded rod, one end of which is connected to the eccentric cam block 32, and the other end passes through the adjustment hole in the vertical section of the adjustable sliding module 4 and is threaded into the blind hole slot 51. The eccentric cam block 32 can rotate around the axis of the cam shaft 31 to approach the standard guide part 5, so as to rigidly lock it on the standard guide part 5 after the adjustable sliding module 4 is adjusted to the correct position, so as to form a standard working opening with the lateral reference seat 2.

[0041] The eccentric cam block 32 features a self-locking optimized design, its core characteristic being that, within the clamping stroke, the helix angle of the cam profile curve is designed to be smaller than the equivalent friction angle between the steel and the cam contact surface. Therefore, when the operator clamps the rebar 7 with one hand by operating the clamping lever, the tool is in a self-locking state. During subsequent bending, the greater the reaction force exerted by the rebar 7 on the cam, the stronger the clamping force of the cam on the rebar 7, completely eliminating the possibility of slippage or torsion of the rebar 7 during bending. The rebar 7 can be quickly released by reversing the operating lever, without the need for any additional tools.

[0042] like Figure 5 and Figure 6 As shown, the standard guide part 5 is integrally formed with the main lever arm handle 1, and the two form a 135° angle. The manufacturing tolerance of this angle is strictly controlled within ±0.1°. The surface of the guide part facing the side of the rebar 7 to be bent is a fixed 135° working surface, and its angle is complementary to the angle of the main lever arm handle. This ensures that when the main lever arm handle is rotated to be perpendicular to the template, the hook of the rebar 7 is squeezed into a standard 135° angle. This working surface is used to squeeze the end of the rebar 7 to be bent during the bending process.

[0043] To enable a single tool to accommodate multiple sizes of reinforcing bars 7, this tool is designed with an adjustable sliding module 4. This module is installed on the side of the standard guide section 5, and its horizontal bottom forms an open working opening with adjustable clamping dimensions with the lateral reference seat 2. Specifically, the vertical section of the adjustable sliding module 4 forms a precise clearance fit with the flat surface of the standard guide section 2, allowing it to slide smoothly up and down along the sliding groove on the blind hole groove 51. During sliding, the distance between the horizontal section of the adjustable sliding module 4 and the left flange of the lateral reference seat 2 changes accordingly; this distance is the working opening size for accommodating the reinforcing bars 7. By adjusting this working opening size, reinforcing bars 7 of different diameters can be precisely clamped without loosening, while ensuring that the axis of the reinforcing bar 7 is aligned with the working surface of the standard guide section 5 during bending.

[0044] In addition, such as Figure 3As shown, the adjustable sliding module 4 has adjustment holes on its body corresponding to different specifications of reinforcing bars 7, specifically including four scale lines of 6mm, 8mm, 10mm and 12mm. Each scale line is precisely calibrated to perfectly match the optimal working opening size of the corresponding diameter reinforcing bar 7. When the module slides to the required scale position, the self-locking clamping mechanism 3 can be operated to rigidly lock the module onto the lateral reference seat 2, ensuring that the module does not shift during operation.

[0045] A method for using the adjustable wall panel reinforcement 7 hook forming tool as described above, comprising the following steps:

[0046] S1: Adjust the opening distance between the adjustable sliding module 4 and the lateral reference seat 2 according to the diameter of the steel bar 7 to be bent, and control the self-locking clamping mechanism 3 to tighten so that the working opening is consistent with the diameter of the steel bar 7 to be bent.

[0047] like Figure 5 As shown, before operation, the operator adjusts the adjustable sliding module 4 according to the diameter of the rebar 7 to be bent (e.g., Φ10mm), referring to the corresponding "10" scale line on the adjustable sliding module 4, until the scale line aligns with a specific edge of the lateral reference seat 2. At this point, the operating opening size is precisely matched to the Φ10mm rebar 7. Then, the self-locking clamping mechanism 3 is tightened to rigidly lock the adjustable sliding module 4. This step does not need to be repeated when continuously operating on rebars of the same specification.

[0048] S2: Hold the main lever arm handle and control the steel bar 7 to be horizontally inserted into the working opening formed by the lateral reference seat 2 and the adjustable sliding module 4, and operate the self-locking clamping mechanism 3 to clamp the steel bar 7.

[0049] The operator holds the non-slip rubber handle 6 at the end of the main lever arm handle 1, and controls the tool to horizontally insert the rebar 7 to be bent into place through the working opening formed by the lateral reference seat 2 and the adjustable sliding module 4. Then, the operator operates the clamping lever 33 of the self-locking clamping mechanism 3 with one hand, driving the eccentric cam block 32 to rotate, instantly and firmly clamping the rebar 7. Due to the self-locking characteristic of the cam, the rebar 7 is reliably locked at this time and will not loosen.

[0050] S3: Using the lateral reference bracket 2 as the bending fulcrum, apply a bending force to the main lever arm handle 1, so that the standard guide part 5 squeezes the end of the steel bar 7 to be bent, until the main lever arm handle 1 is perpendicular to the bottom template or wall surface.

[0051] like Figure 6As shown, the operator uses the lateral reference bracket 2 as the bending fulcrum and applies a steady wrench force to the main lever arm handle 1. Utilizing the lever principle, the lever arm drives the standard guide part 5 to compress the end of the rebar 7 to be bent, causing it to gradually bend along the standard working surface at 135°. When the operator observes that the main lever arm handle 1 is perpendicular to the bottom template or wall surface, the applied force is stopped. At this point, because the standard guide part 5 and the main lever arm handle 1 form a fixed 135° angle, and the vertical state of the handle means that the standard guide part 5 is at a 45° angle to the horizontal direction, the end of the rebar 7 to be bent is pushed from the initial 90° (or straight state) to a standard hook shape at 135° with the straight section of the rebar 7. This angle is precisely calibrated and requires no secondary correction.

[0052] S4: Reverse operation of self-locking clamping mechanism 3 to release steel bar 7, and remove steel bar 7 horizontally from the side of the working opening.

[0053] After bending, the operator reverses the lever of the eccentric cam block 32 in the self-locking clamping mechanism 3 to release the clamped rebar 7. At this point, there is no need to move the tool along the axial direction of the rebar 7 or adjust the position of the rebar 7. The tool can be directly removed horizontally from the side of the working opening (the side away from the standard guide part 5) to complete the standardized forming operation of a single hook. If the specification of the rebar 7 changes subsequently, simply loosen the locking bolt, readjust and lock it according to the corresponding scale on the adjustable sliding module 4, and the bending operation of the next specification of rebar 7 can begin.

[0054] This application discloses an adjustable wall panel rebar hook forming tool and its usage method. Through a lateral working opening composed of a lateral reference seat and an adjustable sliding module, it achieves interference-free assembly and disassembly in dense rebar areas. Combined with a self-locking clamping mechanism, it allows for quick clamping and anti-slip self-locking. The cooperation between the adjustable sliding module and the lateral reference seat allows a single tool to cover the full range of commonly used rebar specifications from Φ6mm to Φ12mm, eliminating the need for frequent replacements and demonstrating strong versatility. The one-piece molded 135° standard guide section ensures precise one-time hook forming, with angle deviation stably controlled within ±1°, meeting quality acceptance requirements. The tool is forged from high-strength alloy steel, making it sturdy and durable, requiring no daily maintenance costs. In practical use, the lateral working opening structure completely avoids the interference problem of axial assembly and disassembly in traditional tools. Combined with the self-locking clamping mechanism that allows for one-second assembly and disassembly, the forming time for a single hook is reduced to less than 5 seconds, increasing efficiency by more than six times. Simultaneously, the long lever arm design reduces applied force by 80%, significantly reducing labor intensity. With a robust overall structure and convenient operation, it achieves a comprehensive technical effect of high efficiency, precision, labor saving, and high versatility, and has significant economic benefits and promotional value.

[0055] The embodiments of this application have been described in detail above. These descriptions are merely preferred embodiments and should not be construed as limiting the scope of this application. All equivalent variations and modifications made within the scope of this application should still fall within the patent coverage of this application.

Claims

1. An adjustable wall panel rebar hook forming tool, characterized in that, include: Main lever arm handle; A standard guide section is integrally formed with the main lever arm handle and forms a 135° angle with the main lever arm handle; A lateral reference bracket is connected to one side of the standard guide portion and extends outward. An adjustable sliding module is installed on the side of the standard guide away from the lateral reference seat, and an operating opening for clamping the reinforcing bar can be formed between it and the lateral reference seat. A self-locking clamping mechanism passes through the adjustable sliding module and is mounted on the standard guide portion, for clamping or releasing the adjustable sliding module to make it fit tightly against or move away from the standard guide portion.

2. The adjustable wall panel rebar hook forming tool according to claim 1, characterized in that, The surfaces on which the standard guide part mates with the lateral reference bracket and the adjustable sliding module are all flat surfaces.

3. An adjustable wall panel rebar hook forming tool according to claim 1 or 2, characterized in that, The lateral reference holder is a flat plate structure, which is arranged along the axial direction of the standard guide and located on the axis of the standard guide, and is integrally connected and fixed with the standard guide.

4. The adjustable wall panel rebar hook forming tool according to claim 3, characterized in that, A rectangular blind hole groove is provided on the axis of the standard guide section. A sliding groove that cooperates with the adjustable sliding module is provided on the wall of the blind hole groove near the self-locking clamping mechanism. A threaded hole that cooperates with the clamping operating rod is provided on the side of the blind hole groove near the lateral reference card seat.

5. The adjustable wall panel rebar hook forming tool according to claim 4, characterized in that, The self-locking clamping mechanism consists of a cam shaft, an eccentric cam block, and a clamping operating rod. The eccentric cam block is rotatably connected to the cam shaft. One end of the clamping operating rod is connected to the eccentric cam block, and the other end passes through the vertical section of the adjustable sliding module and directly engages with the threaded hole.

6. The adjustable wall panel rebar hook forming tool according to claim 5, characterized in that, The eccentric cam block can rotate along the cam shaft axis to approach the standard guide portion, and is used to rigidly lock it on the standard guide portion after the adjustable sliding module is adjusted to the position, so as to form a standard working opening with the lateral reference card seat.

7. An adjustable wall panel rebar hook forming tool according to any one of claims 1-2 and 4-6, characterized in that, The adjustable sliding module is an integrated L-shaped rigid structure. Its vertical section is provided with an adjustment hole that is consistent with the height direction of the standard guide section. The adjustment hole is provided with a scale corresponding to different steel bar specifications.

8. The adjustable wall panel rebar hook forming tool according to claim 7, characterized in that, The scale ranges from 6mm, 8mm, 10mm and 12mm.

9. An adjustable wall panel rebar hook forming tool according to any one of claims 1-2, 4-6, and 8, characterized in that, The end of the main lever arm handle is fitted with a non-slip rubber handle.

10. A method of using the adjustable wall panel rebar hook forming tool according to any one of claims 1 to 9, characterized in that the steps include... include: S1: Adjust the opening distance between the adjustable sliding module and the lateral reference seat according to the diameter of the steel bar to be bent, and control the self-locking clamping mechanism to tighten so that the working opening is consistent with the diameter of the steel bar to be bent. S2: Hold the main lever arm handle and control the steel bar to be horizontally inserted into the working opening formed by the lateral reference seat and the adjustable sliding module, and operate the self-locking clamping mechanism to clamp the steel bar. S3: Using the lateral reference seat as the bending fulcrum, apply a bending force to the main lever arm handle to make the standard guide part squeeze the end of the steel bar to be bent until the main lever arm handle is perpendicular to the bottom template or wall surface. S4: Reverse the operation of the self-locking clamping mechanism to release the reinforcing bar and remove it horizontally from the side of the working opening.

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