Steel bar cutting device for building construction

By designing an automatic clamping system and a conveyor belt, the problem of manual operation required for existing rebar cutting machines has been solved, achieving automated and efficient rebar cutting.

CN224254093UActive Publication Date: 2026-05-19SHANDONG CHINA CONSTR EIGHTH BUREAU INVESTMENT & CONSTR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG CHINA CONSTR EIGHTH BUREAU INVESTMENT & CONSTR CO LTD
Filing Date
2025-04-15
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Existing rebar cutting machines require manual operation of the pressure bar during the cutting process, resulting in low cutting efficiency.

Method used

An automatic clamping system driven by a motor was designed. Through the cooperation of triangular blocks and extrusion blocks, the elastic changes of springs are used to realize the automatic clamping and release of steel bars. Combined with the automatic stepping feeding of the conveyor belt, the automatic cutting of steel bars is realized.

Benefits of technology

It has automated the cutting of steel bars, reduced manual operation, and improved cutting efficiency.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224254093U_ABST
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Abstract

The utility model relates to the technical field of steel bar cutting, in particular to a steel bar cutting device for building construction. A driving plate is fixed to the end of the output end of a motor, a supporting plate is fixed to the upper surface of a movable plate, a stand column is movably inserted into the upper surface of the supporting plate in a penetrating mode, a clamping plate is fixed to the upper end of the stand column, and a triangular block is fixed to the side surface of the stand column. When a triangular block moves towards the position where the gradient of an extrusion block is large, the extrusion force of the extrusion block on the triangular block is gradually increased, a telescopic rod is stored in a storage pipe, the two sets of clamping plates clamp the reinforcing steel bar again, and therefore the reinforcing steel bar is clamped again. According to the assembly, automation of fixing of the reinforcing steel bars during cutting is achieved, manual operation is not needed, trouble and labor are saved, and the cutting efficiency is improved.
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Description

Technical Field

[0001] This utility model relates to the field of rebar cutting technology, specifically a rebar cutting device for building construction. Background Technology

[0002] The definition of reinforcing bars refers to straight or coiled steel bars used in reinforced concrete. Their cross-section is usually circular, but sometimes they are square with rounded corners.

[0003] In the existing technology, steel bars are a very common reinforcement material in the construction industry. Before use, steel bars need to be cut to the required length, which is usually done by a steel bar cutting machine. The longer end of the steel bar is inserted into the cutting machine for cutting, and the other end is fixed with a pressure bar to improve the stability of the steel bar during cutting.

[0004] However, existing cutting machines require manual control of the pressure bar when cutting steel bars. After cutting a section, the pressure bar needs to be lifted to release the steel bar before the next section can be cut, which is time-consuming and labor-intensive, reducing cutting efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a steel bar cutting device for building construction, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rebar cutting device for building construction, the rebar cutting device for building construction comprising:

[0007] A workbench, with a motor fixed at its lower end, a belt movably sleeved on the output end of the motor, a conveyor belt movably attached to the end of the belt, and a drive plate fixed at the output end of the motor;

[0008] A movable plate, wherein a support plate is fixed on the upper surface of the movable plate, a column is movably inserted on the upper surface of the support plate, a clamping plate is fixed at the upper end of the column, and a triangular block is fixed on the side surface of the column.

[0009] Preferably, a cutting machine is fixed at one end of the workbench, the conveyor belt movably rubs against the side surface of the workbench near the cutting machine, a rotating rod is movably provided at the lower end of the workbench, the motor and the rotating rod are movably connected by a belt, and the conveyor belt and the rotating rod are movably connected by a belt.

[0010] Preferably, an extrusion block is fixed on the inner surface of the workbench, a through groove is provided on the bottom surface of the inner wall of the workbench, the movable plate is movably disposed on the inner wall of the workbench, a vertical plate is fixed at the lower end of the movable plate, and the through groove and the vertical plate are movably engaged.

[0011] Preferably, a transmission rod is movably provided on the side surface of the vertical plate, and the other end of the transmission rod is movably provided on the side surface of the drive plate. A positioning groove is provided on the surface of the support plate, and the column corresponds to the positioning groove and is movably engaged.

[0012] Preferably, a storage tube is fixed to the upper end of the support plate, and two sets of springs are movably sleeved on the outer surface of the storage tube. The two sets of springs are symmetrically distributed. The triangular block is fixed to the outer surface of the column, and a telescopic rod is fixed to the inner surface of the column.

[0013] Preferably, the telescopic rod is movably engaged inside the storage tube, a slide rail is fixed on the upper surface of the movable plate, a slider is fixed at the lower end of the column, a slide groove is opened at the lower end of the slider, and the slide rail and the slide groove are movably engaged.

[0014] Preferably, the triangular block corresponds to the extrusion block, the extrusion block and the side slope of the triangular block are in contact, the slope of the extrusion block and the slope of the triangular block are the same but opposite in direction, and the inner wall of the clamping plate is provided with steel bars.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] When the motor is started and rotated half a turn, the triangular block moves towards the side with the gentlest slope on the pressing block. Due to the elasticity of the spring, as the triangular block moves towards the side with the gentlest slope, the pressing force of the pressing block on the triangular block gradually decreases. At this time, the spring will push the column outward in the positioning groove, thereby separating the two sets of clamping plates and no longer clamping the rebar. When the motor is started and rotated half a turn again, the movable plate will drive the triangular block to move towards the side with the gentlest slope on the pressing block, gradually increasing the pressing force of the pressing block on the triangular block. This will cause the telescopic rod to retract into the receiving tube, allowing the two sets of clamping plates to clamp the rebar again. This component automates the fixing of the rebar during cutting, eliminating the need for manual operation, saving time and effort, and improving cutting efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is an exploded view of the overall structure of this utility model;

[0019] Figure 3 This is an exploded view of the transmission component structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the clamping component structure of this utility model;

[0021] Figure 5 This is an exploded view of the clamping component structure of this utility model;

[0022] Figure 6This is a schematic diagram of the clamping block assembly structure of this utility model;

[0023] Figure 7 This is an exploded view of the workbench assembly structure of this utility model.

[0024] In the diagram: 1. Workbench; 2. Reinforcing bar; 3. Transmission rod; 4. Motor; 5. Cutting machine; 6. Movable plate; 7. Extrusion block; 8. Through slot; 9. Support plate; 10. Vertical plate; 11. Drive plate; 12. Clamping plate; 13. Column; 14. Triangular block; 15. Slide rail; 16. Slider; 17. Spring; 18. Telescopic rod; 19. Storage tube; 20. Positioning slot; 21. Slide groove; 22. Rotating rod; 23. Belt; 24. Conveyor belt. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Please see Figures 1 to 7 This utility model provides a technical solution: a steel bar cutting device for building construction.

[0027] In Example 1, a motor 4 is fixed at the lower end of the workbench 1. A belt 23 is movably sleeved at the output end of the motor 4, and a conveyor belt 24 is movably sleeved at the end of the belt 23. Therefore, while the motor 4 controls the automatic fixing of the reinforcing bar 2, the conveyor belt 24 will drive the reinforcing bar 2 to move towards the cutting machine 5, thereby realizing the automatic step feeding of the cutting machine 5 and further improving the efficiency of cutting the reinforcing bar 2. A drive plate 11 is fixed at the output end of the motor 4. A support plate 9 is fixed on the upper surface of the movable plate 6. A column 13 is movably inserted on the upper surface of the support plate 9. A clamping plate 12 is fixed at the upper end of the column 13. A triangular block 14 is fixed on the side surface of the column 13. The movement or fixing of the reinforcing bar 2 is controlled by the change of the squeezing force of the squeezing block 7 on the triangular block 14.

[0028] Based on Embodiment 1, in order to achieve automatic clamping of the reinforcing bar 2 during cutting, a cutting machine 5 is fixed at one end of the workbench 1, and the conveyor belt 24 moves and rubs against the side surface of the workbench 1 near the cutting machine 5. A rotating rod 22 is movably provided at the lower end of the workbench 1. The motor 4 and the rotating rod 22 are movably connected through the belt 23. The conveyor belt 24 and the rotating rod 22 are movably connected through the belt 23.

[0029] An extrusion block 7 is fixed on the inner surface of the workbench 1. A through groove 8 is opened on the bottom surface of the inner wall of the workbench 1. A movable plate 6 is movably installed on the inner wall of the workbench 1. A vertical plate 10 is fixed at the lower end of the movable plate 6. The through groove 8 and the vertical plate 10 are correspondingly and movably locked. A transmission rod 3 is movably installed on the side surface of the vertical plate 10. The other end of the transmission rod 3 is movably installed on the side surface of the drive plate 11. A positioning groove 20 is opened on the surface of the support plate 9. The column 13 corresponds to the positioning groove 20 and is movably locked, which plays a positioning role for the movement of the column 13 and prevents the column 13 from deviating when moving.

[0030] A storage tube 19 is fixed to the upper end of the support plate 9. Two sets of springs 17 are movably sleeved on the outer surface of the storage tube 19. The two sets of springs 17 are symmetrically distributed. A triangular block 14 is fixed to the outer surface of the column 13. A telescopic rod 18 is fixed to the inner surface of the column 13. The telescopic rod 18 is movably locked inside the storage tube 19. A slide rail 15 is fixed to the upper surface of the movable plate 6. A slider 16 is fixed to the lower end of the column 13. A slide groove 21 is opened at the lower end of the slider 16. The slide rail 15 and the slide groove 21 are movably locked in response to each other.

[0031] Triangular block 14 corresponds to extrusion block 7. Extrusion block 7 and the side slope of triangular block 14 are in contact. The slope of extrusion block 7 and the slope of triangular block 14 are the same but opposite. Due to the elasticity of spring 17, when triangular block 14 moves towards the slope of extrusion block 7, the extrusion force of extrusion block 7 on triangular block 14 gradually decreases. At this time, spring 17 will push column 13 to move outward in positioning groove 20, thereby separating the two sets of clamping plates 12. When triangular block 14 moves towards the slope of extrusion block 7, the extrusion force of extrusion block 7 on triangular block 14 gradually increases, thereby retracting telescopic rod 18 into storage tube 19, and making the two sets of clamping plates 12 clamp the reinforcing bar 2 again. This component realizes the automation of fixing the reinforcing bar 2 during cutting, without manual operation, saving time and effort, and improving cutting efficiency. The inner wall of clamping plate 12 is provided with reinforcing bar 2.

[0032] In actual use, one end of the rebar 2 is placed on the support rod on one side of the workbench 1, and the other end is inserted into the cutting machine 5. After a section of the rebar 2 that has passed through the cutting machine 5 is cut, the motor 4 is started and rotated half a turn. The rotation of the motor 4 will drive the drive plate 11 to rotate. The rotation of the drive plate 11 will drive the movable plate 6 to move away from the cutting machine 5 in the inner wall of the workbench 1 through the transmission rod 3. The movement of the movable plate 6 will drive the triangular block 14 to move towards the slope of the pressing block 7. Due to the elasticity of the spring 17, when the triangular block 14 moves towards the slope of the pressing block 7, the pressing force of the pressing block 7 on the triangular block 14 gradually decreases. At this time, the spring 17 will push the column 13 to move outward in the positioning groove 20, thereby separating the two sets of clamping plates 12 and no longer clamping the rebar 2.

[0033] When the motor 4 is restarted and rotated half a turn, the movable plate 6 will drive the triangular block 14 to move towards the slope of the pressing block 7, so that the pressing force of the pressing block 7 on the triangular block 14 gradually increases, thereby allowing the telescopic rod 18 to be stored in the storage tube 19, and the two sets of clamping plates 12 to clamp the steel bar 2 again. This component realizes the automation of fixing the steel bar 2 during cutting, without the need for manual operation, saving time and effort, and improving cutting efficiency.

[0034] Meanwhile, when the motor 4 rotates, it drives the rotating rod 22 to rotate via the belt 23. The rotation of the rotating rod 22 drives the conveyor belt 24 to rotate via the belt 23. Therefore, while the motor 4 controls the automatic fixing of the steel bar 2, the conveyor belt 24 will drive the steel bar 2 to move towards the cutting machine 5, thereby realizing the automatic step feeding of the cutting machine 5 and further improving the efficiency of cutting the steel bar 2. The diameter of the rotating rod 22 is much smaller than the output diameter of the motor 4, and the diameter of the roller inside the conveyor belt 24 is the same as the diameter of the rotating rod 22.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rebar cutting device for building construction, characterized in that: The aforementioned rebar cutting device for building construction includes: Workbench (1), a motor (4) is fixed at the lower end of the workbench (1), a belt (23) is movably sleeved at the output end of the motor (4), a conveyor belt (24) is movably sleeved at the end of the belt (23), and a drive plate (11) is fixed at the output end of the motor (4). The movable plate (6) has a support plate (9) fixed on its upper surface. A column (13) is movably inserted through the upper surface of the support plate (9). A clamp (12) is fixed at the upper end of the column (13). A triangular block (14) is fixed on the side surface of the column (13).

2. The steel bar cutting device for building construction according to claim 1, characterized in that: The workbench (1) is fixed with a cutting machine (5) at one end. The conveyor belt (24) moves along the side surface of the workbench (1) near the cutting machine (5). A rotating rod (22) is movably provided at the lower end of the workbench (1). The motor (4) and the rotating rod (22) are movably connected by a belt (23). The conveyor belt (24) and the rotating rod (22) are movably connected by a belt (23).

3. A steel bar cutting device for building construction according to claim 2, characterized in that: The inner surface of the workbench (1) is fixed with an extrusion block (7), and the bottom surface of the inner wall of the workbench (1) is provided with a through groove (8). The movable plate (6) is movably disposed on the inner wall of the workbench (1), and the lower end of the movable plate (6) is fixed with a vertical plate (10). The through groove (8) and the vertical plate (10) are correspondingly and movably locked.

4. A steel bar cutting device for building construction according to claim 3, characterized in that: The vertical plate (10) has a transmission rod (3) movably mounted on its side surface. The other end of the transmission rod (3) is movably mounted on the side surface of the drive plate (11). The support plate (9) has a positioning groove (20) on its surface. The column (13) corresponds to the positioning groove (20) and is movably engaged.

5. A steel bar cutting device for building construction according to claim 4, characterized in that: The upper end of the support plate (9) is fixed with a storage tube (19). Two sets of springs (17) are movably sleeved on the outer surface of the storage tube (19). The two sets of springs (17) are symmetrically distributed. The triangular block (14) is fixed on the outer surface of the column (13). The inner surface of the column (13) is fixed with a telescopic rod (18).

6. A steel bar cutting device for building construction according to claim 5, characterized in that: The telescopic rod (18) is movably locked inside the storage tube (19). The upper surface of the movable plate (6) is fixed with a slide rail (15). The lower end of the column (13) is fixed with a slider (16). The lower end of the slider (16) is provided with a groove (21). The slide rail (15) and the groove (21) are movably locked in opposite directions.

7. A steel bar cutting device for building construction according to claim 6, characterized in that: The triangular block (14) corresponds to the extrusion block (7). The side slope of the extrusion block (7) is in contact with the side slope of the triangular block (14). The slope of the extrusion block (7) and the side slope of the triangular block (14) are the same but opposite. The inner wall of the clamping plate (12) is provided with steel bars (2).