Adjustable steel bar bending machine for construction

By designing a manual bending and height adjustment mechanism, the problem of the clamping blocks being difficult to separate in existing rebar bending machines has been solved, enabling convenient clamping and removal of rebars and improving operational convenience and accuracy.

CN224406299UActive Publication Date: 2026-06-26MINXI VOCATIONAL & TECHN COLLEGE

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
MINXI VOCATIONAL & TECHN COLLEGE
Filing Date
2025-06-04
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

In existing rebar bending machines, the springs close the upper and lower clamps before and after bending, making it difficult to manually separate and insert the rebar, resulting in poor ease of use.

Method used

An adjustable steel bar bending machine for construction was designed. It adopts a manual bending mechanism and a height adjustment mechanism. The movable clamping block and the fixed clamping block are separated by pressing blocks. The steel bar is clamped by clamping springs and bent by rotating the handle. Combined with adjustable fixed and movable columns, the clamping and operation convenience is improved.

Benefits of technology

It enables convenient clamping and removal of reinforcing bars, improves the ease and precision of operation, and adapts to the bending requirements of reinforcing bars of different sizes.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224406299U_ABST
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Abstract

The utility model discloses a building adjustable steel bar bending machine, including base, the base top is equipped with the top seat, is equipped with height adjusting mechanism between top seat and base, the top seat top fixedly connected with fixed stand, one side of fixed stand is equipped with movable stand, be equipped with manual bending mechanism on the top seat, manual bending mechanism includes handle, handle fixedly connected with bending column on, bending column fixedly connected with fixed clamping block on, belong to steel bar bending machine technical field. The building adjustable steel bar bending machine, through the press block of pressing down and make movable clamping block and fixed clamping block separate, put the steel bar between both, then loosen the press block, clamp the steel bar, then rotate handle and drive the steel bar to rotate, cooperate fixed stand and movable stand and bend the steel bar, conveniently clamp and fix the steel bar, and conveniently take down the steel bar and unload, improve the convenience of use and operation.
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Description

Technical Field

[0001] This utility model relates to the field of steel bar bending machine technology, specifically an adjustable steel bar bending machine for construction. Background Technology

[0002] A rebar bending machine is a piece of equipment used on construction sites to bend rebar. Workers turn the handle to bend the rebar. In existing technology, the rebar bending machine fixes the rebar with springs and clamps. However, before and after bending, the springs cause the upper and lower clamps to close together, making it difficult to manually separate them to put the rebar in, which makes the machine less than ideal in terms of ease of use.

[0003] For example, patent publication number CN220073092U specifically describes a rebar bending machine, relating to the technical field of rebar bending machines. It includes: a base, a pad fixedly connected to the top of the base, a fixing mechanism on one side of the pad, and a fixing shaft within a groove on the pad. The fixing shaft is fixedly connected to both the pad and the base. A handle passes through the outer surface of the fixing shaft and is rotatably connected to the fixing shaft. This utility model, by setting a fixing mechanism, allows for better fixing and limiting of the rebar during use, preventing displacement when out of control and improving the accuracy of the rebar bending position. Simultaneously, the use of threaded bolts increases the distance between the bending column and the first fixing column, allowing for better bending of slightly larger rebars. However, this rebar bending machine uses springs and clamps to fix the rebar, but before and after bending, the springs cause the upper and lower clamps to close together, making it difficult to manually separate them to insert the rebar, resulting in less than ideal ease of use. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an adjustable rebar bending machine for construction. It solves the problem that while rebar bending machines use springs and clamps to fix the rebar, the springs cause the upper and lower clamps to close together before and after bending, making it difficult to manually separate them to insert the rebar, thus reducing the ease of use.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an adjustable steel bar bending machine for construction, including a base, a top seat on the top of the base, a height adjustment mechanism between the top seat and the base, a fixed column fixedly connected to the top of the top seat, a movable column on one side of the fixed column, and a manual bending mechanism on the top seat;

[0006] The manual bending mechanism includes a handle, a bending column fixedly connected to the handle, a fixed clamping block fixedly connected to the bending column, a guide groove on the bending column, a movable clamping block slidably connected inside the guide groove, a clamping spring at the top of the movable clamping block, a push rod fixedly connected to the bottom of the movable clamping block, a movable steel ball installed at the bottom of the push rod, a limit seat fixedly connected to the handle, a pressing block rotatably connected inside the limit seat, a drive gear fixedly connected to the end of the pressing block, a driven rack at the bottom of the drive gear, an inclined guide block fixedly connected to the end of the driven rack, and a return spring at the end of the inclined guide block.

[0007] Preferably, the top seat is provided with multiple adjusting screw holes, all of which are threadedly connected to the movable column, so that the distance between the movable column and the fixed column can be easily adjusted.

[0008] Preferably, the movable clamping block is slidably connected to the inner wall of the guide groove, and the clamping spring is disposed between the inner wall of the guide groove and the movable clamping block, so that the clamping spring can be used to clamp the reinforcing bar.

[0009] Preferably, the movable steel ball is movably installed at the bottom end of the push rod, and the movable steel ball extends out of the push rod and extends to the outside of the push rod, so that the movable steel ball can move freely at the bottom end of the push rod and will not fall out of the push rod.

[0010] Preferably, the driving gear meshes with the driven rack, and the driven rack is slidably connected to the inner wall of the handle, so that the driving gear can drive the driven rack to move along the inner wall of the handle.

[0011] Preferably, the inclined guide block has an inclined surface, and the bottom end of the push rod contacts the inclined surface of the inclined guide block through a movable steel ball, so that the push rod can be moved by using the inclined surface of the inclined guide block.

[0012] Preferably, the height adjustment mechanism includes two fixed sleeves, which are fixedly installed on the base. A connecting rod is slidably connected inside the two fixed sleeves. The connecting rod is fixedly connected to the top seat. A crossbeam is fixedly connected between the two connecting rods. An internally threaded sleeve is rotatably connected to the crossbeam. A knob is fixedly connected to the top of the internally threaded sleeve. A fixing screw is threaded inside the internally threaded sleeve and fixedly connected to the base, which allows for convenient height adjustment.

[0013] This utility model provides an adjustable steel bar bending machine for construction. Compared with the prior art, it has the following advantages:

[0014] 1. This adjustable rebar bending machine for construction uses a pressing block to separate the movable clamping block from the fixed clamping block. The rebar is placed between the two blocks, and then the pressing block is released to clamp the rebar. The handle is then turned to rotate the rebar, which, together with the fixed and movable columns, bends the rebar. This facilitates clamping and fixing the rebar and makes it easy to remove and unload the rebar, improving the convenience of use and operation.

[0015] 2. The adjustable steel bar bending machine used in this building can be adjusted by turning a knob, which in turn drives the inner threaded sleeve to rotate. The inner threaded sleeve rotates and moves up and down along the fixed screw. The movement of the inner threaded sleeve drives the crossbeam to move, the movement of the crossbeam drives the connecting rod to move, and the movement of the connecting rod drives the top seat to move, which allows for easy height adjustment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the manual bending mechanism of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure between the pressing block and the top rod of this utility model;

[0019] Figure 4 This is a schematic diagram of the height adjustment mechanism of this utility model.

[0020] In the diagram: 1. Base; 2. Manual bending mechanism; 201. Handle; 202. Bending column; 203. Fixed clamping block; 204. Guide groove; 205. Movable clamping block; 206. Clamping spring; 207. Top rod; 208. Movable steel ball; 209. Limit seat; 210. Pressing block; 211. Drive gear; 212. Driven rack; 213. Inclined guide block; 214. Return spring; 3. Top seat; 4. Height adjustment mechanism; 401. Fixed sleeve; 402. Connecting rod; 403. Crossbeam; 404. Internal threaded sleeve; 405. Knob; 406. Fixed screw; 5. Fixed column; 6. Movable column; 7. Adjusting screw hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-3This utility model provides a technical solution: an adjustable rebar bending machine for construction, including a base 1, a top seat 3 on the top of the base 1, a height adjustment mechanism 4 between the top seat 3 and the base 1, a fixed column 5 fixedly connected to the top of the top seat 3, a movable column 6 on one side of the fixed column 5, and multiple adjustment screw holes 7 on the top seat 3, all of which are threadedly connected to the movable column 6, so that the distance between the movable column 6 and the fixed column 5 can be easily adjusted. The top seat 3 is provided with a manual bending mechanism 2, which can be used to easily clamp and fix the rebar, and to easily remove and unload the rebar, improving the convenience of use and operation.

[0023] The manual bending mechanism 2 includes a handle 201, the end of which is rotatably connected to the top seat 3, allowing the handle 201 to drive the bending column 202 to rotate, thereby completing the bending operation of the steel bar. The bending column 202 is fixedly connected to the handle 201, and a fixed clamping block 203 is fixedly connected to the bending column 202. A guide groove 204 is provided on the bending column 202, and a movable clamping block 205 is slidably connected inside the guide groove 204. A clamping spring 206 is provided at the top of the movable clamping block 205, and the clamping spring 206 can push the movable clamping block 205. 05 is close to the fixed clamping block 203, so that the movable clamping block 205 and the fixed clamping block 203 can clamp and fix the steel bar. The movable clamping block 205 is slidably connected to the inner wall of the guide slide 204. The clamping spring 206 is set between the inner wall of the guide slide 204 and the movable clamping block 205, so that the steel bar can be clamped by the clamping spring 206. The bottom end of the movable clamping block 205 is fixedly connected to the top rod 207. The bottom end of the top rod 207 is equipped with a movable steel ball 208. The movable steel ball 208 is movably installed at the bottom end of the top rod 207, and part of the movable steel ball 208 extends out of the top rod. 207 extends to the outside of the push rod 207, allowing the movable steel ball 208 to move freely at the bottom of the push rod 207 without dislodging from it. A limiting seat 209 is fixedly connected to the handle 201. A pressing block 210 is rotatably connected inside the limiting seat 209. A drive gear 211 is fixedly connected to the end of the pressing block 210. A driven rack 212 is provided at the bottom of the drive gear 211. The drive gear 211 meshes with the driven rack 212. The driven rack 212 is slidably connected to the inner wall of the handle 201, allowing the drive gear 211 to drive the driven rack 212. The rack 212 moves along the inner wall of the handle 201. An inclined guide block 213 is fixedly connected to the end of the driven rack 212. A return spring 214 is provided at the end of the inclined guide block 213. The return spring 214 is located between the inclined guide block 213 and the inner wall of the handle 201, and can reset the inclined guide block 213 and the driven rack 212. An inclined surface is provided on the inclined guide block 213. The bottom end of the push rod 207 contacts the inclined surface of the inclined guide block 213 through the movable steel ball 208, so that the inclined surface of the inclined guide block 213 can be used to push the push rod 207 to move.

[0024] Please see Figure 1 and Figure 4 The height adjustment mechanism 4 includes two fixed sleeves 401, which are fixedly installed on the base 1. A connecting rod 402 is slidably connected inside the two fixed sleeves 401. The connecting rod 402 is fixedly connected to the top seat 3. A crossbeam 403 is fixedly connected between the two connecting rods 402. An internally threaded sleeve 404 is rotatably connected to the crossbeam 403. A knob 405 is fixedly connected to the top of the internally threaded sleeve 404. The knob 405 has multiple through holes for easy insertion of tools such as pry bars and for easy rotation. A fixing screw 406 is threadedly connected inside the internally threaded sleeve 404 and is fixedly connected to the base 1. Rotating the knob 405 causes the internally threaded sleeve 404 to rotate, which in turn moves the internally threaded sleeve 404 up and down along the fixing screw 406. The movement of the internally threaded sleeve 404 moves the crossbeam 403, which in turn moves the connecting rod 402, which in turn moves the top seat 3, thus facilitating height adjustment.

[0025] During operation, pressing down on the pressing block 210 causes it to rotate, which in turn rotates the driving gear 211. The driving gear 211 then moves the driven rack 212, which in turn moves the inclined guide block 213. The inclined guide block 213, using its inclined surface, pushes the push rod 207 up and down. The push rod 207 moves, causing the movable clamping block 205 to move upwards, simultaneously compressing the clamping spring 206. This separates the movable clamping block 205 from the fixed clamping block 203, thus... The reinforcing bar is placed between the two, and then the pressing block 210 is released. The return spring 214 resets the inclined guide block 213, causing the top rod 207 to fall. At the same time, the clamping spring 206 releases pressure, causing the movable clamping block 205 to press on the reinforcing bar and clamp it. Then, the handle 201 is turned to drive the reinforcing bar to rotate, which, together with the fixed column 5 and the movable column 6, bends the reinforcing bar, making it easy to clamp and fix the reinforcing bar and to remove and unload it, thus improving the convenience of use and operation.

[0026] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. An adjustable steel bar bending machine for construction, comprising a base (1), characterized in that: The base (1) is provided with a top seat (3) at the top, and a height adjustment mechanism (4) is provided between the top seat (3) and the base (1). A fixed column (5) is fixedly connected to the top of the top seat (3), and a movable column (6) is provided on one side of the fixed column (5). A manual bending mechanism (2) is provided on the top seat (3). The manual bending mechanism (2) includes a handle (201), a bending column (202) is fixedly connected to the handle (201), a fixed clamping block (203) is fixedly connected to the bending column (202), a guide groove (204) is provided on the bending column (202), a movable clamping block (205) is slidably connected inside the guide groove (204), a clamping spring (206) is provided at the top of the movable clamping block (205), and a top rod (207) is fixedly connected to the bottom of the movable clamping block (205). A movable steel ball (208) is installed at the bottom of the top rod (207). A limit seat (209) is fixedly connected to the handle (201). A pressing block (210) is rotatably connected inside the limit seat (209). A drive gear (211) is fixedly connected to the end of the pressing block (210). A driven rack (212) is provided at the bottom of the drive gear (211). An inclined guide block (213) is fixedly connected to the end of the driven rack (212). A return spring (214) is provided at the end of the inclined guide block (213).

2. The adjustable steel bar bending machine for construction according to claim 1, characterized in that: The top seat (3) is provided with multiple adjusting screw holes (7), and all of the multiple adjusting screw holes (7) are threadedly connected to the movable column (6).

3. The adjustable steel bar bending machine for construction according to claim 1, characterized in that: The movable clamping block (205) is slidably connected to the inner wall of the guide groove (204), and the clamping spring (206) is disposed between the inner wall of the guide groove (204) and the movable clamping block (205).

4. The adjustable steel bar bending machine for construction according to claim 1, characterized in that: The movable steel ball (208) is movably installed at the bottom end of the top rod (207), and the movable steel ball (208) extends out of the top rod (207) and extends to the outside of the top rod (207).

5. The adjustable steel bar bending machine for construction according to claim 1, characterized in that: The driving gear (211) meshes with the driven rack (212), and the driven rack (212) is slidably connected to the inner wall of the handle (201).

6. The adjustable steel bar bending machine for construction according to claim 1, characterized in that: The inclined guide block (213) has an inclined surface, and the bottom end of the top rod (207) contacts the inclined surface of the inclined guide block (213) through a movable steel ball (208).

7. The adjustable steel bar bending machine for construction according to claim 1, characterized in that: The height adjustment mechanism (4) includes two fixed sleeves (401), which are fixedly installed on the base (1). A connecting rod (402) is slidably connected inside the two fixed sleeves (401), and the connecting rod (402) is fixedly connected to the top seat (3).

8. The adjustable steel bar bending machine for construction according to claim 7, characterized in that: A crossbeam (403) is fixedly connected between the two connecting rods (402). An internal threaded sleeve (404) is rotatably connected to the crossbeam (403). A knob (405) is fixedly connected to the top of the internal threaded sleeve (404). A fixing screw (406) is threaded inside the internal threaded sleeve (404). The fixing screw (406) is fixedly connected to the base (1).