Improved steel bar bending tool

By designing a rebar bending tool that includes an operating table, a guide assembly, a rebar bending assembly, and a transmission assembly, the problems of complexity and inefficiency of existing equipment are solved, and precise bending and safe and reliable rebar processing are achieved.

CN224058596UActive Publication Date: 2026-03-31THE THIRD CONSTR CO LTD OF YNJG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-09
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

Existing rebar bending equipment is complex in structure, complicated in operation, costly, and inefficient. It is difficult to guarantee consistent bending angle and shape, and there are problems such as safety risks and high labor intensity.

Method used

A rebar bending tool was designed, comprising an operating table, a guide assembly, a rebar bending assembly, a transmission assembly, and an operating handle. The transmission assembly provides stable power to ensure consistent bending angle and shape. The detachable design reduces costs, and the limiting sleeve ensures rebar fixation and positioning.

Benefits of technology

It enables precise control of the bending angle, improves work efficiency and quality consistency, reduces labor intensity, lowers costs and errors, and enhances safety and operational comfort.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an improved steel bar bending tool which comprises an operation table. The guide assembly is connected to one end of the upper portion of the operation table; the steel bar bending assembly is connected to the other end of the upper portion of the operation table. The transmission assembly is arranged on one side between the guide assembly and the steel bar bending assembly, one end of the transmission assembly is in transmission connection with the steel bar bending assembly, and the other end of the transmission assembly is connected to the upper portion of the operation table; and the operating handle is connected to the outer side of the other end of the transmission assembly. The steel bar bending machine is ingenious in design, safe and reliable, can accurately control the bending angle, ensures that steel bars meet design requirements, improves working efficiency, can provide stable and uniform power due to the arrangement of the transmission assembly, enables the bending process to be more stable, ensures that the bending angle and shape of each steel bar are consistent, improves consistency of bending quality, and reduces production cost. And meanwhile, the labor intensity is relieved, and fatigue and errors caused by manual bending are avoided.
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Description

Technical Field

[0001] This utility model relates to a rebar bending tool, specifically an improved rebar bending tool, belonging to the field of rebar bending technology. Background Technology

[0002] In construction, rebar bending generally refers to the process of bending rebar into a specific angle or shape using manual or mechanical means. The purpose of rebar bending is to conform the rebar to the shape required by the design drawings, facilitating its reinforcing function within the concrete. Rebar bending requires a certain level of skill, especially when bending thicker rebars. Manual operation is very strenuous, and workers without proper tools or experience are prone to improper handling, leading to inaccurate bending angles or shapes that do not meet design requirements. This is particularly true in projects requiring a large number of rebar bends, where manual operation is inefficient and precision is difficult to guarantee. Improper operation can also cause the rebar to crack or be bent at an inappropriate position, resulting in wasted rebar and increasing the risk of worker injury.

[0003] Currently, the steel bar bending equipment used in the market is either complex in structure, high in cost, complicated to operate, large in space and difficult to maintain; or it is too simple and cannot guarantee the consistency of the bending angle and shape of the steel bars, making it difficult to control the quality and is also time-consuming and labor-intensive. Many existing devices that bend steel bars manually rely entirely on manual labor to bend the steel bars, which often requires multiple rework bending processes, resulting in extremely low efficiency and inconvenience.

[0004] Therefore, the key to solving the above-mentioned technical problems lies in developing a time-saving, labor-saving, safe, and reliable improved rebar bending tool. Summary of the Invention

[0005] In view of the many defects and shortcomings existing in the above-mentioned background technology, this utility model has made improvements and innovations, with the aim of providing a cleverly designed, safe, reliable and practical steel bar bending tool that can accurately control the bending angle, ensure that the steel bars meet the design requirements and improve work efficiency.

[0006] Another objective of this invention is that the transmission component provides stable and uniform power, making the bending process smoother and ensuring that the bending angle and shape of each steel bar are consistent, thereby improving the consistency of bending quality. At the same time, it reduces labor intensity and avoids fatigue and errors during manual bending.

[0007] To solve the above problems and achieve the above-mentioned invention objectives, this utility model provides an improved rebar bending tool by adopting the following design structure and the following technical solution:

[0008] An improved steel bar bending tool, which comprises:

[0009] An operating table (1);

[0010] A guiding component (2), the guiding component (2) is connected to one end above the operating table (1);

[0011] A steel bar bending component (3), the steel bar bending component (3) is connected to the other end above the operating table (1);

[0012] A transmission component (4), the transmission component (4) is arranged on one side between the guiding component (2) and the steel bar bending component (3), one end of the transmission component (4) is in transmission connection with the steel bar bending component (3), and the other end of the transmission component (4) is connected above the operating table (1);

[0013] An operating handle (5), the operating handle (5) is connected to the outside of the other end of the transmission component (4).

[0014] Preferably, the guiding component (2) comprises:

[0015] A guiding seat (21), the guiding seat (21) is fixedly connected to the middle of one end of a fixed platform (12);

[0016] A connecting piece (22), the connecting piece (22) is connected above the guiding seat (21);

[0017] A roller (23), the roller (23) is rotatably connected to the connecting piece (22).

[0018] Preferably, the guiding seat (21) is integrally in a "C" - shaped structure, and a connecting hole for installing the connecting piece (22) is formed through the side plate above the guiding seat (21);

[0019] One end of the connecting piece (22) is connected with a plug, and the other end is provided with a through - hole penetrating along its radial direction, and an anti - detachment piece is detachably connected in the through - hole;

[0020] The middle part of the outer circumference of the roller (23) is circumferentially inwardly provided with a "V" - shaped guiding groove.

[0021] Preferably, the steel bar bending component (3) comprises:

[0022] A support (31), the support (31) is connected to the other end above the operating table (1);

[0023] A turntable (32), the turntable (32) is rotatably connected to the upper part inside the support (31);

[0024] A limiting sleeve (33), the limiting sleeve (33) is connected to the outside of the turntable (32).

[0025] Preferably, the support (31) includes:

[0026] Support members (311) that are relatively arranged on both sides above the operation table (1);

[0027] Rotating members (312), which are bearings, and the outer rings of the rotating members (312) are respectively fixedly connected to the upper inner parts of the two support members (311);

[0028] Among them, the support member (311) is integrally in a "C" shape.

[0029] Preferably, the two middle parts of both ends of the turntable (32) are respectively connected to the inner rings of the corresponding rotating members (312) through connecting columns;

[0030] The limiting sleeve (33) is connected to the middle part of the outer ring of the turntable (32), and the limiting sleeve (33) is arranged parallel to the end face of the turntable (32);

[0031] Among them, the limiting sleeve (33) is a tubular structure with at least one end open and hollow inside.

[0032] Preferably, the transmission assembly (4) includes:

[0033] A first connecting shaft (41), one end of which is connected to the connecting column at the corresponding end of the turntable (32);

[0034] A first gear (42) connected to the first connecting shaft (41);

[0035] A transmission mounting seat (43) connected to the operation table (1) on one side between the guiding assembly (2) and the steel bar bending assembly (3);

[0036] A second connecting shaft (44) rotatably connected above the transmission mounting seat (43);

[0037] A second gear (45) connected to the second connecting shaft (44);

[0038] Among them, the first gear (42) and the second gear (45) are meshed and connected.

[0039] Preferably, the first gear (42) and the first connecting shaft (41) are connected together by a key;

[0040] One end of the second connecting shaft (44) is fixedly connected with a square connecting column (441) adapted to be connected to the operating handle (5);

[0041] The second gear (45) and the second connecting shaft (44) are connected together by a key; It should be noted that in the original text, the description of the shape of the support member (311) as "几" character shape is more like a Chinese character description. Here, it is tentatively translated as "C" shape for the sake of understanding in English. You can adjust it according to the actual situation.

[0042] The outer diameter of the first gear (42) is smaller than the outer diameter of the second gear (45);

[0043] Protective covers (46) are also provided on the first gear (42) and the second gear (45) for protection.

[0044] Preferably, the operating handle (5) includes a fixing rod (51), one end of which is connected to a connecting ring (511) adapted to the square connecting post (441), and the connecting ring (511) and the square connecting post (441) are snap-fit ​​connected.

[0045] Preferably, the operating handle (5) further includes: a handle connecting sleeve (52), one end of which is fixedly sleeved on the outside of the non-connecting ring end of the fixed rod (51), and the handle connecting sleeve (52) has an internal thread section inside;

[0046] An extension rod (53) is provided at one end and threaded onto the inner thread section of the handle connecting sleeve (52). The extension rod (53) is also provided with protective texture or connected with a protective sleeve on the outside.

[0047] Preferably, the operating table (1) includes a support (11) and a fixed platform (12) fixedly connected above the support (11), wherein the support (11) is a fixed support or an adjustable telescopic support; and the fixed platform (12) is a rectangular tube.

[0048] The working principle is as follows: Before using this utility model, in order to improve work efficiency, two operators usually work together to use it.

[0049] In use, firstly, the first operator holds the operating handle (5) and lifts it upwards so that it is close to perpendicular to the fixed platform (12). At the same time, the operating handle (5) drives the square connecting column (441) connected to it to rotate through the connecting ring (511). Then the square connecting column (441) drives the second connecting shaft (44) fixedly connected to it to rotate. Then the second connecting shaft (44) drives the second gear (45) connected to it to rotate. Then the second gear (45) drives the first gear (42) meshed with it to rotate. Then the first gear (42) drives the first connecting shaft (41) connected to it to rotate. Then the first connecting shaft (41) drives the turntable (32) to rotate through the connecting column connected to it. Finally, the turntable (32) drives the limiting sleeve (33) connected to it to rotate to below the turntable (32). At this time, the opening of the limiting sleeve (33) faces the roller (23) upwards.

[0050] Then, the second operator inserts the steel bar (6) along the top of the roller (23) into the inside of the limiting sleeve (33);

[0051] Next, the first operator holds the operating handle (5) and rotates it toward the guide assembly (2) until it reaches the bending degree required by the design, at which point the force can be stopped.

[0052] Finally, the second operator holds the non-bent end of the rebar (6) and pushes it a certain distance toward the bent end, then holds the bent end of the rebar (6) and removes it from the tool, thus completing the bending work of the rebar (6); repeat the above operation steps and follow the above operation process to successfully complete the bending work of multiple rebars (6).

[0053] The beneficial effects of this utility model compared with the prior art are:

[0054] 1. This utility model is ingeniously designed, safe, reliable, and highly practical. It can precisely control the bending angle to ensure that the steel bars meet the design requirements, while also greatly reducing labor costs and improving work efficiency.

[0055] 2. Because this utility model is equipped with a transmission component, it can provide stable and uniform power, making the bending process smoother and ensuring that the bending angle and shape of each steel bar are consistent, thereby improving the consistency of bending quality. At the same time, it reduces labor intensity and avoids fatigue and errors during manual bending.

[0056] 3. This utility model has a simple structure and low manufacturing cost, which can greatly reduce material and labor costs, thereby reducing overall production costs;

[0057] 4. The operating handle of this utility model is designed to be extended, which can provide greater leverage force, reduce the physical strength required by the operator during operation, thereby improving operating comfort and reducing fatigue;

[0058] 5. The operating handle of this utility model is also designed to be detachable, which can be disassembled into multiple parts to reduce storage space requirements. It can also be replaced or repaired individually, saving maintenance costs.

[0059] 6. The limiting sleeve of this utility model has an open end and a hollow interior design, which helps to ensure the fixing and positioning of the steel bar when it is inserted for bending, ensures the consistency of the angle and position of the steel bar during bending, reduces the errors that may occur during manual operation, and improves the efficiency and accuracy of steel bar bending work. Attached Figure Description

[0060] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0061] Figure 1 This is one of the usage state diagrams of this utility model;

[0062] Figure 2 This is the second diagram showing the usage state of this utility model;

[0063] Figure 3 This is the third schematic diagram of the usage state of this utility model;

[0064] Figure 4 yes Figure 3 A partially enlarged structural diagram along the AA direction is shown.

[0065] Figure 5 This is a schematic diagram of the overall structure of this utility model;

[0066] Figure 6 This is an exploded view of this utility model;

[0067] Figure 7 This is one of the overall structural schematic diagrams of another design structural form of this utility model;

[0068] Figure 8 This is the second overall structural schematic diagram of another design structural form of this utility model;

[0069] In the diagram, the numbers are: 1—operating table, 11—support, 12—fixed platform;

[0070] 2—Guide assembly, 21—Guide seat, 22—Connector, 23—Roller;

[0071] 3—Rebar bending assembly, 31—Support, 311—Support component, 312—Rotating component, 32—Turntable, 33—Limiting sleeve;

[0072] 4—Transmission assembly, 41—First connecting shaft, 42—First gear, 43—Transmission mounting base, 44—Second connecting shaft, 441—Square connecting column, 45—Second gear, 46—Protective cover;

[0073] 5—Operating handle, 51—Fixing rod, 511—Connecting ring, 52—Handle connecting sleeve, 53—Extending rod;

[0074] 6—Reinforcing steel. Detailed Implementation

[0075] To make the technical means, inventive features, objectives, and effects of this utility model readily understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0076] In summary, a more specific embodiment of this utility model is as follows:

[0077] Example 1

[0078] As Figures 1 to 6 shown, an improved steel bar bending tool, which comprises:

[0079] Operating table 1;

[0080] Guide component 2, which is connected to one end above the operating table 1;

[0081] Steel bar bending component 3, which is connected to the other end above the operating table 1;

[0082] Transmission component 4, which is arranged on one side between the guide component 2 and the steel bar bending component 3. One end of the transmission component 4 is in transmission connection with the steel bar bending component 3, and the other end of the transmission component 4 is connected above the operating table 1;

[0083] Operating handle 5, which is connected to the outside of the other end of the transmission component 4.

[0084] Furthermore, as Figure 6 shown, the guide component 2 comprises:

[0085] Guide seat 21, which is fixedly connected to the middle of one end of the fixed platform 12;

[0086] Connecting piece 22, which is connected above the guide seat 21;

[0087] Roller 23, which is rotatably connected to the connecting piece 22.

[0088] Specifically, as Figure 6 shown, the guide seat 21 is integrally in a "C" - shaped structure, and a connecting hole for installing the connecting piece 22 is opened through the side plate above the guide seat 21;

[0089] One end of the connecting piece 22 is connected with a plug, and the other end is provided with a through - hole along its radial direction, and a anti - detachment piece is detachably connected in the through - hole;

[0090] The middle part of the outer circumference of the roller 23 is circumferentially opened with a "V" - shaped guide groove inward.

[0091] In the present utility model, the connecting piece 22 comprises a smooth - surface circular connecting rod and a hexagonal or spherical plug connected to one end of the connecting rod. Wherein, the other end of the connecting rod is provided with a through - hole along the radial direction, and a anti - detachment piece is detachably connected in the through - hole.

[0092] Furthermore, as Figure 6 shown, the steel bar bending component 3 comprises:

[0093] Support

[0094] A turntable 32, which is rotatably connected to the upper part inside the support 31;

[0095] A limiting sleeve 33, which is connected to the outer side of the turntable 32.

[0096] Specifically, as Figure 6 shown, the support 31 includes:

[0097] Support members 311, which are arranged oppositely to each other on both sides above the operation table 1;

[0098] Rotating members 312, which are bearings. The outer rings of the rotating members 312 are respectively fixedly connected to the upper inner parts of the two support members 311;

[0099] Among them, the support member 311 is integrally in a "J" shape.

[0100] Furthermore, as Figure 6 shown, the operation table 1 includes a bracket 11 and a fixed platform 12 fixedly connected above the bracket 11. Among them, the bracket 11 is a fixed bracket or an adjustable telescopic bracket; the fixed platform 12 is a rectangular tube.

[0101] Furthermore, as Figure 6 shown, the transmission assembly 4 includes:

[0102] A first connecting shaft 41, one end of which is connected to the connecting column at the corresponding end of the turntable 32;

[0103] A first gear 42, which is connected to the first connecting shaft 41;

[0104] A transmission mounting seat 43, which is connected to one side of the operation table 1 between the guiding assembly 2 and the steel bar bending assembly 3;

[0105] A second connecting shaft 44, which is rotatably connected above the transmission mounting seat 43;

[0106] A second gear 45, which is connected to the second connecting shaft 44;

[0107] Among them, the first gear 42 and the second gear 45 are meshed and connected.

[0108] Furthermore, as Figure 6 shown, the first gear 42 and the first connecting shaft 41 are connected together by a key;

[0109] One end of the second connecting shaft 44 is fixedly connected with a square connecting column 441 adapted to be connected with the operating handle 5;

[0110] The second gear 45 is connected to the second connecting shaft 44 by a key;

[0111] The outer diameter of the first gear 42 is smaller than the outer diameter of the second gear 45.

[0112] Furthermore, such as Figure 6 As shown, the operating handle 5 includes a fixing rod 51, one end of which is connected to a connecting ring 511 adapted to the square connecting post 441. The connecting ring 511 and the square connecting post 441 are snap-fit ​​connected.

[0113] In this utility model, all connections referred to are either fixed connections or movable connections. Fixed connections are either welded connections or directly processed into an integral structure; movable connections are hinged connections, threaded connections, bayonet connections, plug-in connections, or rotary connections.

[0114] Before using the improved rebar bending tool of the above design structure, it needs to be moved to the designated construction location manually or by appropriate handling equipment.

[0115] In use, the first operator first holds the operating handle 5 and lifts it upwards so that it is nearly perpendicular to the fixed platform 12. At the same time, the operating handle 5 drives the square connecting column 441 connected to it to rotate through the connecting ring 511. Then, the square connecting column 441 drives the second connecting shaft 44 fixedly connected to it to rotate. Then, the second connecting shaft 44 drives the second gear 45 connected to it to rotate. Then, the second gear 45 drives the first gear 42 meshed with it to rotate. Then, the first gear 42 drives the first connecting shaft 41 connected to it to rotate. Then, the first connecting shaft 41 drives the turntable 32 to rotate through the connecting column connected to it. Finally, the turntable 32 drives the limiting sleeve 33 connected to it to rotate below the turntable 32. At this time, the opening of the limiting sleeve 33 faces the roller 23.

[0116] Then, the second operator inserts the steel bar 6 along the top of the roller 23 into the inside of the limiting sleeve 33;

[0117] Next, the first operator holds the operating handle 5 and rotates it in the direction of the guide component 2 until it reaches the bending degree that meets the design requirements. Because the transmission component 4 is provided, it can provide stable and uniform power, making the bending process smoother and ensuring that the bending angle and shape of each steel bar 6 are consistent, thereby improving the consistency of bending quality, while reducing labor intensity and avoiding fatigue and errors during manual bending.

[0118] Finally, the second operator holds the non-bent end of the rebar 6 and pushes it a certain distance toward the bent end, then holds the bent end of the rebar 6 and removes it from the tool, thus completing the bending of the rebar 6; repeat the above operation, and follow the above operation procedure to successfully complete the bending of multiple rebars 6.

[0119] During the above-mentioned use, the operator may choose whether to use the support 11 when using the operating table 1, depending on the specific operating scenario. Preferably, the bottom of the operating table 1 should be fixed during use. Furthermore, during the above-mentioned use, when inserting the reinforcing bar 6, the operator can finely adjust the position of the limiting sleeve 33 and the roller 23 according to the specific usage situation, making it easier for the reinforcing bar 6 to be inserted into the limiting sleeve 33.

[0120] Example 2

[0121] This embodiment 2 is the same as embodiment 1, except that, as Figure 2 and Figure 5 as well as Figure 6 As shown, the middle portions of both ends of the turntable 32 are respectively connected to the inner ring of the corresponding rotating component 312 via connecting posts;

[0122] The limiting sleeve 33 is connected to the middle of the outer ring of the turntable 32, and the limiting sleeve 33 is parallel to the end face of the turntable 32.

[0123] The limiting sleeve 33 is a tubular structure with one end open and the inside hollow.

[0124] In this utility model, the outer periphery of the rotating member 32 may also be provided with an inwardly recessed V-shaped groove; when the limiting sleeve 33 is perpendicular to the fixed platform 12, the opening of the limiting sleeve 33 faces downward.

[0125] In use, it is the same as in Example 1. The difference is that, in use, since the limiting sleeve 33 adopts a design with one end open and the inside hollow, when the reinforcing bar 6 is inserted for bending, the reinforcing bar 6 is pressed tightly against the closed end of the limiting sleeve 33, which helps to ensure the fixing and positioning of the reinforcing bar 6, ensures the consistency of the angle and position when the reinforcing bar 6 is bent, reduces the errors that may occur during manual operation, and improves the efficiency and accuracy of reinforcing bar bending work.

[0126] The specific usage is the same as in other embodiments, and will not be repeated here.

[0127] Example 3

[0128] This embodiment 3 is the same as other embodiments, except that the limiting sleeve 32 of this utility model is open at both ends.

[0129] In use, it is the same as other embodiments, except that the limiting sleeve 33 adopts a design with open ends and hollow inside. When the reinforcing bar 6 is inserted and bent, it can increase the fixing and positioning effect of the reinforcing bar 6, and further increase the safety of use.

[0130] The specific usage is the same as in other embodiments, and will not be repeated here.

[0131] Example 4

[0132] This embodiment 4 is the same as other embodiments, except that the operating handle 5 further includes: a handle connecting sleeve 52, one end of which is fixedly sleeved on the outside of the non-connecting ring end of the fixed rod 51, and the handle connecting sleeve 52 has an internal thread section inside;

[0133] The extension rod 53 has one end threadedly connected to the internal thread section of the handle connecting sleeve 52. The extension rod 53 also has protective textures or a protective sleeve on its outer side.

[0134] In this utility model, the protective sleeve is a rubber sleeve, and several integrated rubber protective protrusions are provided on the outer surface of the rubber sleeve. The rubber protective protrusions are granular or annular protrusions.

[0135] In this embodiment 4, since a protective cover is provided on the handheld part of the handheld operating lever 41, it can protect the operator's hands from wear and tear during long-term work, thus ensuring construction safety.

[0136] The specific usage is the same as in other embodiments, and will not be repeated here.

[0137] Example 5

[0138] Example 5 is the same as the other examples, except that, as Figure 7 and Figure 8 As shown, protective covers 46 are also provided on the first gear 42 and the second gear 45 for protection.

[0139] When in use, since protective covers 46 are also provided on the first gear 42 and the second gear 45, they can provide safety protection for operators or bystanders during operation, and also protect the first gear 42 and the second gear 45, thereby extending the service life of the device.

[0140] The specific usage is the same as in other embodiments, and will not be repeated here.

[0141] Example 6

[0142] This embodiment 6 is the same as other embodiments, except that the bracket 11 is an adjustable telescopic bracket.

[0143] When the above-mentioned design structure is in use, the height of the support 11 can be adjusted according to the height of the construction personnel, so as to meet the operation of personnel of different heights and thus improve work efficiency.

[0144] The specific usage is the same as in other embodiments, and will not be repeated here.

[0145] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments.

Claims

1. An improved reinforcing bar bending tool characterised in that it Include: Operation platform (1); Guide assembly (2) is connected at the upper end of operation platform (1); Rebar bending assembly (3) is connected at the other end of operation platform (1); Transmission assembly (4) is arranged on one side between guide assembly (2) and rebar bending assembly (3), one end of transmission assembly (4) is in transmission connection with rebar bending assembly (3), the other end of transmission assembly (4) is connected above operation platform (1); Operating handle (5) is connected outside the other end of transmission assembly (4).

2. An improved reinforcing bar bending tool as claimed in claim 1 wherein, The guide assembly (2) comprises: Guide seat (21) is fixedly connected to the middle of one end of the fixed platform (12); Connecting piece (22) is connected above the guide seat (21); Roller (23) is rotatably connected to the connecting piece (22).

3. An improved reinforcing bar bending tool as claimed in claim 2 wherein, The guide seat (21) is in the shape of a "H" structure, and a connecting hole for connecting the connecting piece (22) is formed in the upper through side plate of the guide seat (21); One end of the connecting piece (22) is connected with a plug, and the other end is provided with a through hole in the radial direction, and a anti-drop piece is detachably connected in the through hole; The outer circumferential middle part of the roller (23) is inwardly annularly provided with a "V"-shaped guide groove.

4. The improved reinforcing bar bending tool of claim 1 wherein, The rebar bending assembly (3) comprises: Support (31) is connected to the other end of the upper side of the operation platform (1); Rotating disc (32) is rotatably connected to the inside of the upper side of the support (31); Limiting sleeve (33) is connected to the outside of the rotating disc (32); The support (31) comprises: Supporting piece (311) is arranged on both sides of the upper side of the operation platform (1) in opposite directions; Rotating piece (312) is a bearing, and the outer ring of the rotating piece (312) is fixedly connected to the inner upper part of the two supporting pieces (311), respectively; Wherein, the supporting piece (311) is in the shape of a "J" character.

5. An improved reinforcing bar bending tool as claimed in claim 4 wherein, The middle part of both ends of the rotating disc (32) is connected to the inner ring of the corresponding end rotating piece (312) through the connecting column; The limiting sleeve (33) is connected to the middle part of the outer ring of the rotating disc (32), and the limiting sleeve (33) is arranged in parallel with the end face of the rotating disc (32); Wherein, the limiting sleeve (33) is a tubular structure with at least one open end and hollow inside.

6. The improved reinforcing bar bending tool of claim 1 wherein, The transmission assembly (4) comprises: First connecting shaft (41) is connected to the connecting column of the corresponding end of the rotating disc (32); First gear (42) is connected to the first connecting shaft (41); Transmission mounting seat (43) is connected to one side of the operation platform (1) between the guide assembly (2) and the rebar bending assembly (3); Second connecting shaft (44) is rotatably connected above the transmission mounting seat (43); Second gear (45) is connected to the second connecting shaft (44); Wherein, the first gear (42) and the second gear (45) are in meshing connection.

7. An improved reinforcing bar bending tool as claimed in claim 6 wherein, The first gear (42) and the first connecting shaft (41) are connected by a key; One end of the second connecting shaft (44) is fixedly connected with a square connecting column (441) which is adaptively connected with the operating handle (5); The second gear (45) and the second connecting shaft (44) are connected by a key; The outer diameter of the first gear (42) is smaller than the outer diameter of the second gear (45).

8. The improved rebar bending tool of claim 1, wherein, The operating handle (5) comprises a fixed rod (51), one end of the fixed rod (51) is connected with a connecting ring (511) which is adaptively connected with the square connecting column (441), and the connecting ring (511) and the square connecting column (441) are connected by clamping.

9. An improved reinforcing bar bending tool as claimed in claim 8 wherein, The operating handle (5) further comprises a handle connecting sleeve (52), one end of the handle connecting sleeve (52) is fixedly sleeved outside the non-connecting ring end of the fixed rod (51), and the inside of the handle connecting sleeve (52) is provided with an internal thread section; A lengthening rod (53) is threadedly connected to the internal thread section of the handle connecting sleeve (52), and the lengthening rod (53) is further provided with a protective thread or a protective sleeve on the outside.

10. The improved rebar bending tool of claim 1, wherein, The operating table (1) comprises a support (11) and a fixed platform (12) fixedly connected above the support (11), and the fixed platform (12) is a rectangular tube.