Steel bar bender for constructional engineering

Abstract

The utility model relates to the technical field of steel bar bending, and discloses a constructional engineering steel bar bender which comprises a workbench and steel bar bender bodies embedded in the positions, close to the left side and the right side, of the top of the workbench. Through mutual cooperation of a fixing rod, a threaded sleeve A, a sliding plate, a sliding rod, a threaded rod, a vertical plate, a synchronous belt and a servo motor A, the position of an arc-shaped material receiving plate can be moved, and material receiving work of a reinforcing steel bar body is achieved; through mutual cooperation of a movable gear, a screw rod, a side plate, a volute spiral spring, a fixed shaft, a threaded sleeve B, a connecting plate, a limiting telescopic rod, a connecting rod, striker plates and a transmission rack plate, the striker plates on the two sides can be driven to move oppositely after the arc-shaped material receiving plate moves to a proper position; and a reinforcing steel bar body on the reinforcing steel bar feeding hopper can fall onto the arc-shaped material receiving plate, so that the feeding work is facilitated, and the bending efficiency is higher.

Description

Technical Field

[0001] This utility model relates to the technical field of steel bar bending, specifically to a steel bar bending machine for building engineering. Background Technology

[0002] With the development of society and economy, science and technology are also constantly developing and progressing. The level of urbanization in society is getting higher and higher. In housing construction projects, a lot of steel bars are needed. Sometimes, steel bars in certain places need to be bent or curved steel bars are used. A steel bar bending machine is a device that can bend straight steel bars to a certain degree.

[0003] For example, CN202322839693.0 discloses a steel bar bending machine for construction engineering, which relates to the field of bending machine technology. It includes a bending machine body, a disc with a bending mandrel and a pin, a bracket mounted on the bending machine body, a first support block mounted on the outer wall of a movable ring, the other end of a connecting rod rotatably mounted on the first support block, a feed screw rotatably mounted inside the outer shell, a feed sleeve sleeved on the outer wall of the feed screw, and an indicator block slidably mounted on a scale plate. In this invention, through the design of the protective shell, fixing box, fixing ring, movable ring, fixing screw, feed screw, feed sleeve, scale plate, indicator block, and connecting block, the operator does not need to manually clamp the steel bar, avoiding the safety hazard caused by the steel bar warping during bending. It can precisely control the bending position of the steel bar, preventing large deviations in the bending position and avoiding the steel bar dimensions not meeting connection requirements after bending, thus preventing material waste.

[0004] The steel bar bending machine for construction engineering proposed in the above patent can clamp and bend steel bars and adjust the bending position. However, the feeding efficiency is low, requiring workers to feed the steel bars one by one, which reduces the efficiency of steel bar bending and is not conducive to quickly bending steel bars.

[0005] Therefore, we propose a steel bar bending machine for construction engineering to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this utility model is to provide a steel bar bending machine for construction engineering to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a steel bar bending machine for construction engineering, comprising a workbench and a steel bar bending machine body respectively embedded and installed on the top of the workbench near the left and right sides. Two steel bar feeding hoppers are fixedly installed on the rear side of the middle of the top of the workbench, and the steel bar feeding hoppers are arranged left and right. Several steel bar bodies are placed on the opposite side of the steel bar feeding hoppers. Limiting components are respectively provided on the front side of the steel bar feeding hoppers near the opposite side, and the bottom of the limiting components are respectively fixedly installed on the workbench. An arc-shaped receiving plate is provided on the top of the workbench near the front side. Moving components are jointly installed on the bottom of the arc-shaped receiving plate near the left and right sides. A blocking component is installed on the inner side of the steel bar feeding hoppers near the lower front side. A pushing component is installed on the bottom of the workbench near the front side.

[0008] The shielding assembly includes a movable gear located inside the left rebar hopper near the lower left and a screw fixedly installed at the middle left side of the movable gear. The left end of the screw extends movably through to the outside of the rebar hopper and is movably fitted with a side plate. A threaded sleeve B is threaded onto the outside of the screw. A connecting rod is fixedly installed at the middle front side of the threaded sleeve B, and a baffle plate is fixedly installed at the front end of the connecting rod. An opening is provided at the lower left front side of the left rebar hopper, and the right side of the baffle plate extends into the inner cavity of the opening. A transmission rack plate is provided at the front side of the bottom of the movable gear, and the top of the transmission rack plate is fixedly installed on the arc-shaped receiving plate.

[0009] Preferably, a spiral spring is sleeved at the output end of the screw, and one end of the spiral spring is fixedly installed on the screw, while the other end of the spiral spring is fixedly installed with a fixed shaft, and the left end of the fixed shaft is fixedly installed on the side plate.

[0010] Preferably, a connecting plate is fixedly installed at the middle of the top of the threaded sleeve B, and a limiting telescopic rod is fixedly installed on the left side of the connecting plate, with the left end of the limiting telescopic rod fixedly installed on the side plate.

[0011] Preferably, the moving component includes fixed rods fixedly installed on the bottom of the arc-shaped receiving plate near the left and right sides. Rectangular openings for sliding of the fixed rods are respectively opened on the worktable near the left and right sides. The lower ends of the fixed rods pass through the inner cavities of the adjacent rectangular openings and are respectively fixedly installed with threaded sleeves A. Threaded rods are threaded through the upper middle part of the threaded sleeves A. Vertical plates are respectively provided on the front and rear sides of the threaded sleeves A. The tops of the vertical plates are respectively fixedly installed on the worktable. The front ends of the threaded rods are respectively movably installed on the adjacent vertical plates. The rear ends of the threaded rods are respectively movably extended to the outside of the adjacent vertical plates. Synchronous pulleys are respectively fixedly sleeved at the output ends of the threaded rods. Synchronous belts are collectively sleeved on the outside of the synchronous pulleys. A support plate is fixedly installed on the rear side of the left rear vertical plate near the bottom. A servo motor A is fixedly installed on the top of the support plate, and the output end of the servo motor A is fixedly connected to the rear end of the left threaded rod.

[0012] Preferably, a sliding plate is fixedly installed at the bottom of the threaded sleeve A, and a sliding rod is slidably installed through the sliding plate. The front and rear ends of the sliding rod are fixedly installed on adjacent vertical plates.

[0013] Preferably, the pushing assembly includes a servo motor B located at the bottom of the worktable near the front side. The output end of the servo motor B extends movably through to the outside of the worktable, and a rotating gear is fixedly sleeved at the output end of the servo motor B. A rack plate A and a rack plate B are respectively meshed on the front and rear sides of the rotating gear. A vertical rod is fixedly installed on the top of the rack plate A and the rack plate B near the middle. A movable plate A and a movable plate B are fixedly installed on the upper end of the vertical rod, and an electric push rod is fixedly installed on the bottom of the movable plate A and the movable plate B near the rear side. A pushing plate is fixedly installed on the power end of the electric push rod, and an n-shaped rod is fixedly installed on the top of the rack plate A and the rack plate B near opposite sides.

[0014] Preferably, a mounting bracket is fixedly installed at the bottom of the servo motor B, and the upper end of the mounting bracket is fixedly installed on the servo motor B.

[0015] Preferably, the lower ends of the n-shaped rods are fixedly installed with limit blocks, and limit square rods are slidably installed through the limit blocks. Straight plates are fixedly installed at the left and right ends of the limit square rods, and the bottoms of the straight plates are fixedly installed on the worktable.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. Through the cooperation of components such as the fixed rod, threaded sleeve A, sliding plate, sliding rod, threaded rod, vertical plate, synchronous belt, and servo motor A, the position of the arc-shaped receiving plate can be moved to realize the receiving of the steel bar body. Through the cooperation of components such as the movable gear, screw, side plate, spiral spring, fixed shaft, threaded sleeve B, connecting plate, limit telescopic rod, connecting rod, baffle plate, and transmission rack plate, after the arc-shaped receiving plate moves to the appropriate position, it can drive the baffle plates on both sides to move in opposite directions, so that the steel bar body on the steel bar feeding hopper can fall into the arc-shaped receiving plate, which is conducive to the unfolding of the feeding work and the bending efficiency is higher.

[0018] 2. Through the cooperation of components such as servo motor B, fixed frame, rotating gear, rack plate A, rack plate B, vertical rod, electric push rod, pusher plate, n-shaped rod, limit block, limit square rod and straight plate, the steel bar body on the receiving plate can be pushed to the left or right, which is conducive to the bending of the steel bar bending machine body on both sides. The steel bar bending machine body set on both sides can further improve the bending efficiency of the steel bar body and the effect of use is better. Attached Figure Description

[0019] Figure 1 This is a perspective view of the entire utility model;

[0020] Figure 2 This is a rear perspective view of the present invention;

[0021] Figure 3 This is a bottom-view perspective view of the present invention;

[0022] Figure 4 This is a partial bottom-view sectional perspective view of the present invention;

[0023] Figure 5 For the present utility model Figure 4 Enlarged view of point A in the middle;

[0024] Figure 6 This is a partial cross-sectional perspective view of the present invention.

[0025] Figure 7 This is a partial cross-sectional perspective view of the arc-shaped receiving plate of this utility model.

[0026] Figure 8 This is a partial bottom-view perspective view of the threaded rod of this utility model;

[0027] Figure 9 This is a partial cross-sectional perspective view of the present invention.

[0028] Figure 10 For the present utility model Figure 9 Enlarged view of section B in the middle.

[0029] In the diagram: 1. Workbench; 2. Main body of the rebar bending machine; 3. Rebar feeding hopper; 4. Limiting component; 5. Arc-shaped receiving plate; 6. Moving component; 61. Fixed rod; 62. Threaded sleeve A; 621. Sliding plate; 622. Sliding rod; 63. Threaded rod; 64. Vertical plate; 65. Synchronous belt; 66. Servo motor A; 7. Blocking component; 71. Movable gear; 72. Screw; 721. Scroll spring; 722. Fixed shaft; 73. Side Plate; 74. Threaded sleeve B; 741. Connecting plate; 742. Limiting telescopic rod; 75. Connecting rod; 76. Material stop plate; 77. Transmission rack plate; 8. Pushing assembly; 81. Servo motor B; 811. Fixing frame; 82. Rotating gear; 83. Rack plate A; 84. Rack plate B; 85. Vertical rod; 86. Electric push rod; 87. Pushing plate; 88. N-shaped rod; 881. Limiting block; 882. Limiting square rod; 883. Straight plate. Detailed Implementation

[0030] 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.

[0031] Example 1

[0032] Please see Figure 1-10 A rebar bending machine for construction engineering includes a workbench 1 and a rebar bending machine body 2 respectively embedded and installed on the top of the workbench 1 near the left and right sides. Two rebar feeding hoppers 3 are fixedly installed on the rear side of the top center of the workbench 1, and the rebar feeding hoppers 3 are arranged left and right. Several rebar bodies are placed on the opposite side of the rebar feeding hoppers 3. Limiting components 4 are respectively provided on the front side of the rebar feeding hoppers 3 near the opposite side, and the bottom of the limiting components 4 are respectively fixedly installed on the workbench 1. An arc-shaped receiving plate 5 is provided on the top of the workbench 1 near the front side. Moving components 6 are jointly installed on the bottom of the arc-shaped receiving plate 5 near the left and right sides. Blocking components 7 are respectively installed on the inner side of the rebar feeding hoppers 3 near the lower front. A pushing component 8 is installed on the bottom of the workbench 1 near the front side. The rebar receiving operation can be realized by the cooperation of the moving components 6 and the blocking components 7, and the pushing component 8 can realize the pushing of the rebar bodies.

[0033] In this example, the shielding component 7 includes a movable gear 71 located inside the left rebar hopper 3 near the lower left and a screw 72 fixedly installed at the middle left side of the movable gear 71. The left end of the screw 72 extends movably through to the outside of the rebar hopper 3 and is movably fitted with a side plate 73. A threaded sleeve B74 is threaded onto the outside of the screw 72. A connecting rod 75 is fixedly installed at the middle front side of the threaded sleeve B74, and a baffle plate 76 is fixedly installed at the front end of the connecting rod 75. An opening is provided at the lower left front side of the left rebar hopper 3, and the right side of the baffle plate 76 extends into the inner cavity of the opening. A transmission rack plate 77 is provided at the front side of the bottom of the movable gear 71, and the top of the transmission rack plate 77 is fixedly installed on the arc-shaped receiving plate 5. When receiving materials, it can drive the baffle plates 76 on both sides to move in opposite directions, which is conducive to better material receiving.

[0034] Specifically, a spiral spring 721 is sleeved at the output end of the screw 72, and one end of the spiral spring 721 is fixedly installed on the screw 72. The other end of the spiral spring 721 is fixedly installed with a fixed shaft 722. The left end of the fixed shaft 722 is fixedly installed on the side plate 73, which facilitates better recovery of the screw 72.

[0035] Specifically, a connecting plate 741 is fixedly installed at the middle of the top of the threaded sleeve B74, and a limiting telescopic rod 742 is fixedly installed on the left side of the connecting plate 741. The left end of the limiting telescopic rod 742 is fixedly installed on the side plate 73, which serves to guide and limit the movement of the threaded sleeve B74.

[0036] In this example, the moving component 6 includes fixed rods 61 respectively fixedly installed on the bottom of the arc-shaped receiving plate 5 near the left and right sides. Rectangular openings for sliding of the fixed rods 61 are respectively provided on the worktable 1 near the left and right sides. The lower ends of the fixed rods 61 pass through the inner cavities of the adjacent rectangular openings and are respectively fixedly installed with threaded sleeves A62. A threaded rod 63 is threaded through the upper middle part of the threaded sleeve A62. Vertical plates 64 are respectively provided on the front and rear sides of the threaded sleeve A62. The tops of the vertical plates 64 are respectively fixedly installed on the worktable 1, and the threaded rods... The front ends of the threaded rods 63 are movably mounted on the adjacent vertical plates 64, and the rear ends of the threaded rods 63 extend movably through to the outside of the adjacent vertical plates 64. The output ends of the threaded rods 63 are respectively fixedly sleeved with synchronous pulleys, and synchronous belts 65 are sleeved on the outside of the synchronous pulleys. A support plate is fixedly mounted on the rear side of the left rear vertical plate 64 near the bottom. A servo motor A66 is fixedly mounted on the top of the support plate, and the output end of the servo motor A66 is fixedly connected to the rear end of the left threaded rod 63, which can drive the arc-shaped receiving plate 5 to move back and forth, which is conducive to the unfolding of the receiving work.

[0037] The threaded rod 63 involved in the patent meets the requirement of synchronous rotation under the transmission of the synchronous belt 65. Moreover, the synchronous belt 65 and the threaded rod 63 are mature existing technologies and there are no problems such as separation or inability to rotate synchronously.

[0038] Specifically, a sliding plate 621 is fixedly installed at the bottom of the threaded sleeve A62, and a sliding rod 622 is slidably installed through the sliding plate 621. The front and rear ends of the sliding rod 622 are fixedly installed on the adjacent vertical plate 64, which serves to guide and limit the movement of the threaded sleeve A62, so as to make it move back and forth stably.

[0039] In this embodiment: During use, the servo motor A66 is first started. When the servo motor A66 runs, it drives the threaded rod 63 on the left to rotate. Then, under the transmission of the synchronous belt 65, it drives the threaded rods 63 on both sides to rotate synchronously. When the threaded rod 63 rotates, it drives the adjacent threaded sleeve A62 to move backward synchronously. When the threaded sleeve A62 moves backward, it drives the arc-shaped receiving plate 5 to move backward together through the fixed rod 61. The arc-shaped receiving plate 5 stops moving when it reaches the inner cavity of the steel bar feeding hopper 3. Furthermore, during the movement of the arc-shaped receiving plate 5, it also drives the transmission rack plates 77 on both sides to move. After the transmission rack plates 77 move to a certain position, they will... When the movable gear 71 meshes, its rotation drives the screw 72 to rotate, which in turn drives the threaded sleeve B74 to move outward. Simultaneously, it causes the adjacent spiral spring 721 to coil. As the threaded sleeve B74 moves outward, it drives the baffle plate 76 to move outward via the connecting rod 75, allowing it to slowly move away from the bottom of the rebar body. When the arc-shaped receiving plate 5 stops moving, the baffle plate 76 will be completely away from the rebar body, and the rebar body will fall onto the arc-shaped receiving plate 5. After receiving the rebar, the operation can be reversed to move the arc-shaped receiving plate 5 forward to return to its original position. At this time, the baffle plates 76 on both sides will also move and return to their original positions, thus continuing to shield the rebar body.

[0040] Example 2

[0041] This embodiment is an improvement upon embodiment 1. For details, please refer to [link / reference]. Figure 1-4 , Figure 6-7 and Figure 10 The material pushing assembly 8 includes a servo motor B81 located at the bottom of the workbench 1 near the front side. The output end of the servo motor B81 extends movably through to the outside of the workbench 1, and a rotating gear 82 is fixedly sleeved at the output end of the servo motor B81. A rack plate A83 and a rack plate B84 are respectively meshed on the front and rear sides of the rotating gear 82. A vertical rod 85 is fixedly installed on the top of the rack plate A83 and the rack plate B84 near the middle. A movable plate A and a movable plate B are fixedly installed on the upper end of the vertical rod 85, and an electric push rod 86 is fixedly installed on the bottom of the movable plate A and the movable plate B near the rear side. A material pushing plate 87 is fixedly installed on the power end of the electric push rod 86. An n-shaped rod 88 is fixedly installed on the top of the rack plate A83 and the rack plate B84 near opposite sides, which can realize the pushing of the steel bar body on the arc-shaped receiving plate 5, which is conducive to the unfolding of the material pushing work.

[0042] Specifically, a mounting bracket 811 is fixedly installed at the bottom of the servo motor B81, and the upper end of the mounting bracket 811 is fixedly installed on the servo motor B81, which serves to support and fix the servo motor B81.

[0043] Specifically, limit blocks 881 are fixedly installed at the lower end of the n-shaped rod 88, and limit square rods 882 are slidably installed through the limit blocks 881. Straight plates 883 are fixedly installed at the left and right ends of the limit square rods 882, and the bottom of the straight plates 883 are fixedly installed on the workbench 1, which can make the rack plate A83 and rack plate B84 move more stably left and right.

[0044] In this embodiment: After the arc-shaped receiving plate 5 returns to its original position, the servo motor B81 can be started. When the servo motor B81 runs, it drives the rotating gear 82 to rotate. When the rotating gear 82 rotates, it drives the rack plate A83 and rack plate B84 to move relative to each other. Before the servo motor B81 runs, the electric push rod 86 on either side can be started, thereby driving the adjacent push plate 87 to move downward to a suitable position. As the rack plate A83 and rack plate B84 move relative to each other, the adjusted push plate 87 will push the steel bar body into the steel bar bending machine body 2 for bending. After pushing, the receiving work can continue, and then the steel bar body can be pushed to the other side of the steel bar bending machine body 2 for bending. This can effectively improve the bending efficiency of the steel bar body. The push plates 87 on both sides can move downward during pushing and return to their original position after pushing, so as not to affect the progress of the pushing work.

[0045] Working principle: In use, the servo motor A66 is started first. When the servo motor A66 is running, it drives the threaded rod 63 on the left to rotate. Then, under the transmission of the synchronous belt 65, it drives the threaded rods 63 on both sides to rotate synchronously. When the threaded rod 63 rotates, it drives the adjacent threaded sleeve A62 to move backward synchronously. When the threaded sleeve A62 moves backward, it drives the arc-shaped receiving plate 5 to move backward together through the fixed rod 61. The arc-shaped receiving plate 5 stops moving when it enters the inner cavity of the steel bar feeding hopper 3. Furthermore, the arc-shaped receiving plate 5 also... This will cause the transmission rack plates 77 on both sides to move. After the transmission rack plates 77 move to a certain position, they will mesh with the movable gear 71. When the movable gear 71 rotates, it will drive the screw 72 to rotate. When the screw 72 rotates, it will drive the threaded sleeve B74 to move outward. At the same time, it will also cause the adjacent spiral spring 721 to coil. When the threaded sleeve B74 moves outward, it will drive the baffle plate 76 to move outward through the connecting rod 75, so that it can slowly move away from the bottom of the steel bar body. When the arc-shaped receiving plate 5 stops moving, the baffle plate 76 will be completely away from the steel bar body. The reinforcing bar body will fall onto the arc-shaped receiving plate 5. After receiving the material, the operation can be reversed to move the arc-shaped receiving plate 5 forward and restore it to its original position. At this time, the baffle plates 76 on both sides will also move and restore themselves, thus continuing to cover the reinforcing bar body. After the arc-shaped receiving plate 5 has received the material and restored itself, the servo motor B81 can be started. When the servo motor B81 is running, it will drive the rotating gear 82 to rotate. When the rotating gear 82 rotates, it will drive the rack plate A83 and rack plate B84 to move relative to each other. Before the servo motor B81 runs, the electric push rod 86 on either side can be started, thereby driving the adjacent... The pusher plate 87 moves downward to a suitable position, and with the relative movement of the rack plate A83 and rack plate B84, the adjusted pusher plate 87 drives the steel bar body to be pushed into the steel bar bending machine body 2 for bending. In addition, after the pushing is completed, the receiving work can continue, and then push it to the other side of the steel bar bending machine body 2 for bending, which can effectively improve the bending efficiency of the steel bar body. The pusher plates 87 on both sides can move downward during the pushing and return to their original position after the pushing, so as not to affect the pushing work.

[0046] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A steel bar bending machine for construction engineering, comprising a workbench (1) and a steel bar bending machine body (2) respectively embedded and installed on the top of the workbench (1) near the left and right sides, characterized in that: Two steel bar feeding hoppers (3) are fixedly installed at the rear side of the top center of the workbench (1), and the steel bar feeding hoppers (3) are arranged left and right. Several steel bar bodies are placed on the opposite side of the steel bar feeding hoppers (3). Limiting parts (4) are respectively set on the front side of the steel bar feeding hoppers (3) near the opposite side, and the bottom of the limiting parts (4) is fixedly installed on the workbench (1). An arc-shaped receiving plate (5) is set on the top of the workbench (1) near the front side. A moving component (6) is installed on the bottom of the arc-shaped receiving plate (5) near the left and right sides. A shielding component (7) is installed on the inner side of the steel bar feeding hoppers (3) near the front and lower side. A pushing component (8) is installed on the bottom of the workbench (1) near the front side. The shielding assembly (7) includes a movable gear (71) located on the inner side of the left steel bar hopper (3) near the lower left and a screw (72) fixedly installed on the middle left side of the movable gear (71). The left end of the screw (72) extends movably through to the outer side of the steel bar hopper (3) and is movably mounted with a side plate (73). A threaded sleeve B (74) is threadedly installed on the outer side of the screw (72). A connecting rod (75) is fixedly installed at the middle front side of the threaded sleeve B (74). A baffle plate (76) is fixedly installed at the front end of the connecting rod (75). An opening is provided at the lower left front side of the left steel bar hopper (3). The right side of the baffle plate (76) extends into the inner cavity of the opening. A transmission rack plate (77) is provided at the front side of the bottom of the movable gear (71). The top of the transmission rack plate (77) is fixedly installed on the arc-shaped receiving plate (5).

2. The steel bar bending machine for construction engineering according to claim 1, characterized in that: The output end of the screw (72) is fitted with a spiral spring (721), and one end of the spiral spring (721) is fixedly installed on the screw (72), and the other end of the spiral spring (721) is fixedly installed with a fixed shaft (722), and the left end of the fixed shaft (722) is fixedly installed on the side plate (73).

3. A steel bar bending machine for construction engineering according to claim 1, characterized in that: A connecting plate (741) is fixedly installed at the middle of the top of the threaded sleeve B (74), and a limiting telescopic rod (742) is fixedly installed on the left side of the connecting plate (741). The left end of the limiting telescopic rod (742) is fixedly installed on the side plate (73).

4. A steel bar bending machine for construction engineering according to claim 1, characterized in that: The moving component (6) includes fixed rods (61) fixedly installed on the bottom of the arc-shaped receiving plate (5) near the left and right sides. Rectangular openings for sliding of the fixed rods (61) are respectively opened on the left and right sides of the worktable (1). The lower ends of the fixed rods (61) pass through the inner cavities of the adjacent rectangular openings and are respectively fixedly installed with threaded sleeves A (62). Threaded rods (63) are threaded through the middle of the threaded sleeves A (62). Vertical plates (64) are respectively provided on the front and rear sides of the threaded sleeves A (62). The top of the vertical plates (64) are respectively fixedly installed with... On the workbench (1), the front end of the threaded rod (63) is movably mounted on the adjacent vertical plate (64), and the rear end of the threaded rod (63) extends movably through to the outside of the adjacent vertical plate (64). The output end of the threaded rod (63) is fixedly sleeved with a synchronous wheel, and the outer side of the synchronous wheel is jointly sleeved with a synchronous belt (65). A support plate is fixedly installed on the rear side of the left rear vertical plate (64) near the bottom. A servo motor A (66) is fixedly installed on the top of the support plate, and the output end of the servo motor A (66) is fixedly connected to the rear end of the left threaded rod (63).

5. A steel bar bending machine for construction engineering according to claim 4, characterized in that: The bottom of the threaded sleeve A (62) is fixedly installed with a sliding plate (621), and a sliding rod (622) is slidably installed through the sliding plate (621). The front and rear ends of the sliding rod (622) are fixedly installed on the adjacent vertical plate (64).

6. A steel bar bending machine for construction engineering according to claim 1, characterized in that: The feeding assembly (8) includes a servo motor B (81) located at the bottom of the workbench (1) near the front side. The output end of the servo motor B (81) extends through to the outside of the workbench (1), and a rotating gear (82) is fixedly sleeved at the output end of the servo motor B (81). A rack plate A (83) and a rack plate B (84) are respectively meshed at the front and rear sides of the rotating gear (82). A vertical rod (85) is fixedly installed at the top of the rack plate A (83) and the rack plate B (84) near the middle. A movable plate A and a movable plate B are fixedly installed at the upper end of the vertical rod (85), and an electric push rod (86) is fixedly installed at the bottom of the movable plate A and the movable plate B near the rear side. A feeding plate (87) is fixedly installed at the power end of the electric push rod (86), and an n-shaped rod (88) is fixedly installed at the top of the rack plate A (83) and the rack plate B (84) near the opposite side.

7. A steel bar bending machine for construction engineering according to claim 6, characterized in that: The bottom of the servo motor B (81) is fixedly mounted with a fixing bracket (811), and the upper end of the fixing bracket (811) is fixedly mounted on the servo motor B (81).

8. A steel bar bending machine for construction engineering according to claim 6, characterized in that: The lower end of the n-shaped rod (88) is fixedly installed with a limiting block (881), and a limiting square rod (882) is slidably installed on the limiting block (881). Straight plates (883) are fixedly installed on the left and right ends of the limiting square rod (882), and the bottom of the straight plate (883) is fixedly installed on the workbench (1).

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