Steel bar cutting device for building construction

Abstract

The invention provides a steel bar cutting device for building construction. The steel bar cutting device for building construction comprises a mounting frame, a conveying mechanism, a moving frame and a pull-back assembly. The conveying mechanism used for conveying the reinforcing steel bars is installed on the top of the installation frame. A moving frame is installed behind the conveying mechanism, the moving frame is arranged on the installation frame in a sliding mode in the first direction, and a baffle used for limiting the reinforcing steel bars is arranged on the moving frame. The moving frame can be driven to reset through the pull-back assembly. When the steel bar cutting device is used, a steel bar is driven by the conveying mechanism to move in the first direction, when the end of the steel bar abuts against the baffle, the steel bar can drive the moving frame to move in the first direction together, the steel bar is cut off through the material cutting mechanism, and in the cutting-off process, the moving frame can move along with the steel bar; the steel bars are cut off in the conveying process, continuous conveying and continuous cutting of the steel bars are achieved, and therefore the cutting efficiency of the steel bars is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction equipment, and particularly relates to a steel bar cutting device for construction. Background Art

[0002] Steel bars are building materials commonly used in the construction process. During on-site construction, steel bars usually need to be cut into the designed length to meet the later use. When cutting steel bars, in order to ensure that the cutting size of the steel bars is the designed value, the method of baffle positioning is usually adopted, so that the distance between the baffle and the cutting tool is the specified length, so as to ensure that the steel bars maintain the specified length after cutting. However, during the cutting process, it is necessary to control the conveying of the steel bars, so that the steel bars cannot be continuously conveyed to complete the cutting operation, resulting in low efficiency in the cutting production process of the steel bars. Summary of the Invention

[0003] An embodiment of the present invention provides a steel bar cutting device for construction, aiming to solve the problem of low production efficiency in the cutting production process of steel bars in the prior art.

[0004] To achieve the above object, the technical solution adopted by the present invention is: to provide a steel bar cutting device for construction, including:

[0005] Mounting frame;

[0006] Conveying mechanism, installed on the mounting frame for conveying steel bars, and defining the conveying direction of the steel bars as the first direction;

[0007] Moving frame, slidably arranged on the mounting frame along the first direction, and a cutting mechanism for cutting steel bars is installed on the moving frame. A baffle is arranged on the side of the cutting mechanism away from the conveying mechanism along the first direction, and the end of the steel bar can abut against the baffle;

[0008] Pull-back assembly, installed between the mounting frame and the moving frame for pulling the moving frame to move in the direction opposite to the steel bar conveying direction.

[0009] In a possible implementation manner, the cutting mechanism includes a cutting tool slidably arranged on the moving frame, defining the sliding direction of the cutting tool as the second direction. A guiding frame is slidably arranged on the opposite side of the cutting tool along the second direction, and an elastic member for pulling the guiding frame to move towards the cutting tool is also arranged on the moving frame.

[0010] In a possible implementation manner, the guiding frame includes a plurality of vertical rods, and the plurality of vertical rods are arranged in a staggered manner to form a guiding gap for guiding steel bars.

[0011] In a possible implementation, a pressing frame for pressing the steel bars downward is further installed on the moving frame. The mounting frame is slidably arranged on the moving frame in the vertical direction. A guide rod penetrating the pressing frame is fixedly installed on the guide frame. A guide groove for accommodating the guide rod is arranged on the pressing frame. The guide groove includes a first elongated hole with a length arranged in the second direction and a second elongated hole arranged obliquely upward.

[0012] In a possible implementation, the guide frame includes an anti-rotation rod with a length direction arranged in the first direction. A plurality of the vertical rods are fixedly installed on the anti-rotation rod. An anti-rotation groove for accommodating the anti-rotation rod is arranged on the baffle. An anti-rotation edge slidably arranged inside the anti-rotation groove is arranged on the anti-rotation rod.

[0013] In a possible implementation, the pulling-back assembly includes:

[0014] A guide wheel rotatably arranged at the bottom of the mounting frame;

[0015] A pulling rope wound around the outside of the guide wheel. One end of the pulling rope is connected to the moving frame and is used to pull the moving frame to move in a direction opposite to the first direction;

[0016] A gravity block installed at the other end of the pulling rope and used to pull the pulling rope to move.

[0017] In a possible implementation, a conversion wheel is rotatably arranged at the bottom of the mounting frame. The pulling rope is wound around the conversion wheel. After the pulling rope is wound around the conversion wheel, it is divided into a first section and a second section. The first section is connected to the moving frame, and the second section is connected to the gravity block. An adjusting assembly for adjusting the length of the second section is further arranged between the moving frame and the mounting frame.

[0018] In a possible implementation, the adjusting assembly includes:

[0019] A moving block slidably arranged on the moving frame along the arrangement direction of the first section and the second section. A long groove for guiding the movement of the moving block is recessed on the mounting frame. The length direction of the long groove is inclined in the direction of the first direction and approaching the second section;

[0020] A tensioning roller rotatably arranged on the moving block. The pulling rope is wound around the outside of the tensioning roller.

[0021] In a possible implementation, a sliding block is slidably arranged on the moving frame along the first direction. The moving block is installed on the sliding block. Buffer members are installed on both sides of the sliding block along the first direction. The other ends of the two buffer members abut against the moving frame.

[0022] In a possible implementation, the conveying mechanism includes:

[0023] A rotating roller rotatably arranged on the mounting rack;

[0024] A guiding roller rotatably arranged on the mounting rack and arranged in parallel with a spacing from the rotating roller, and the guiding roller and the rotating roller form a conveying groove for accommodating steel bars;

[0025] A driving member mounted on the mounting rack, and a driving end of the driving member is in transmission connection with the rotating roller for driving the rotating roller to rotate.

[0026] In the solution shown in the embodiment of the present application, compared with the prior art, by providing a mounting rack, a conveying mechanism for conveying steel bars is mounted on the top of the mounting rack. A moving rack is mounted behind the conveying mechanism along a first direction, the moving rack is slidably arranged on the mounting rack along the first direction, and a baffle for limiting the steel bars is arranged on the moving rack. And when the steel bar is cut off, the moving rack can be driven by a pulling-back assembly to move towards the direction close to the conveying mechanism. In the present application, in use, the conveying mechanism drives the steel bar to move along the first direction. When the end of the steel bar abuts against the baffle, the steel bar will drive the moving rack to move along the first direction together, and a cutting mechanism is used to cut off the steel bar. During the cutting process, the moving rack can move along with the steel bar, so that the steel bar is cut off during the conveying process, realizing the operations of continuous conveying and continuous cutting of the steel bar, thereby improving the cutting efficiency of the steel bar. Description of the Drawings

[0027] Figure 1 Schematic structural diagram of a steel bar cutting device for building construction provided by an embodiment of the present invention;

[0028] Figure 2 is Figure 1 Partial enlarged view of part A in

[0029] Figure 3 Schematic installation structure diagram of a guiding rack provided by an embodiment of the present invention;

[0030] Figure 4 Schematic structural diagram of a pulling-back assembly provided by an embodiment of the present invention;

[0031] Figure 5 Schematic structural diagram of an adjusting assembly provided by an embodiment of the present invention.

[0032] Description of the reference numerals:

[0033] 1. Mounting frame; 2. Conveying mechanism; 21. Rotating roller; 22. Guide roller; 3. Moving frame; 31. Baffle; 32. Sliding block; 321. Buffer member; 4. Stock cutting mechanism; 41. Cutter; 5. Pull-back assembly; 51. Guide wheel; 52. Pulling rope; 521. First section; 522. Second section; 53. Gravity block; 54. Conversion wheel; 55. Moving block; 551. Tensioning roller; 56. Tensioning wheel; 6. Guide frame; 61. Elastic member; 62. Upright rod; 63. Pressing frame; 64. Guide rod; 65. Anti-rotation rod. Detailed implementation manners

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] Please refer to Figures 1 to 5 simultaneously, and a steel bar cutting device for building construction provided by the present invention will be described. The steel bar cutting device for building construction includes a mounting frame 1, a conveying mechanism 2, a moving frame 3 and a pull-back assembly 5. The conveying mechanism 2 is installed on the mounting frame 1 and is used for conveying steel bars. The conveying direction of the steel bars is defined as the first direction. The moving frame 3 is slidably arranged on the mounting frame 1 along the first direction. A stock cutting mechanism 4 for cutting steel bars is installed on the moving frame 3. A baffle 31 is arranged on one side of the stock cutting mechanism 4 away from the conveying mechanism 2 along the first direction, and the end of the steel bar can abut against the baffle 31. The pull-back assembly 5 is installed between the mounting frame 1 and the moving frame 3 and is used for pulling the moving frame 3 to move in a direction opposite to the steel bar conveying direction.

[0036] The steel bar cutting device for building construction provided in this embodiment, compared with the prior art, is provided with a mounting frame 1, and a conveying mechanism 2 for conveying steel bars is installed on the top of the mounting frame 1. A moving frame 3 is installed behind the conveying mechanism 2 along the first direction. The moving frame 3 is slidably arranged on the mounting frame 1 along the first direction, and a baffle 31 for limiting the steel bar is arranged on the moving frame 3. And after the steel bar is cut, the pull-back assembly 5 can drive the moving frame 3 to move in a direction close to the conveying mechanism 2. In this application, during use, the conveying mechanism 2 drives the steel bar to move along the first direction. When the end of the steel bar abuts against the baffle 31, the steel bar will drive the moving frame 3 to move along the first direction together, and the stock cutting mechanism 4 is used to cut the steel bar. During the cutting process, the moving frame 3 can move along with the steel bar, so that the steel bar is cut during the conveying process, realizing the continuous conveying and continuous cutting of the steel bar, thereby improving the cutting efficiency of the steel bar.

[0037] Specifically, in this embodiment, a fixing plate for fixing to the mobile frame 3 is bent on the baffle 31, the fixing plate is fixed to the mobile frame 3 by bolts, and an oblong through hole for installing the bolt is provided on the fixing plate. The length direction of the oblong through hole is provided along the first direction.

[0038] Specifically, in this embodiment, Figure 1 The direction indicated by the arrow in the middle is the first direction.

[0039] In some embodiments, the above-mentioned cutting mechanism 4 can be used as follows: Figure 1 , Figure 2 See also Figure 1 , Figure 2 The cutting mechanism 4 includes a cutter 41 slidably arranged on the mobile frame 3, and the sliding direction of the cutter 41 is defined as the second direction. A guide frame 6 is slidably arranged on the opposite side of the cutter 41 along the second direction, and an elastic member 61 for pulling the guide frame 6 to move toward the direction close to the cutter 41 is also arranged on the mobile frame 3. The cutter 41 is slidably arranged on the mobile frame 3, and the sliding direction of the cutter 41 is arranged along the horizontal direction and perpendicular to the first direction. A pusher for driving the cutter 41 to move is installed on the mobile frame 3, and the pusher is a hydraulic cylinder. A feed port is arranged on the side of the mobile frame 3 close to the conveying mechanism 2, and the cutter 41 is located behind the feed port. When the steel bar is conveyed on the mobile frame 3, the cutter 41 is stored outside the feed port, and when the steel bar abuts against the baffle 31, the pusher drives the cutter 41 to move toward the direction close to the feed port and cuts the steel bar. At this time, the cut steel bar will abut against the guide frame 6, and when the cutter 41 is retracted, the steel bar falls downward due to its own gravity, completing the unloading of a single steel bar. The setting of the guide frame 6 can prevent the steel bar from flying outward when being cut, playing a protective role. At the same time, the guide frame 6 can guide the steel bar to fall downward, ensuring the stability of the unloading position, thereby facilitating the collection of the cut steel bar in the later stage.

[0040] Preferably, in this embodiment, a cutting edge that engages with the cutter 41 is provided at the feed port on the movable frame 3 .

[0041] Specifically, in this embodiment, the elastic member 61 is a tension spring, one end of the elastic member 61 is mounted on the guide frame 6, and the other end of the elastic member 61 is mounted on the moving frame 3. The guide frame 6 includes a cylindrical guide rod arranged at the feed inlet, and the cylindrical guide rod is arranged on both sides of the feed inlet relative to the cutter 41. In addition, a chamfer is also arranged on the side of the cutter 41 to facilitate the conveying of the steel bars along the first direction.

[0042] Preferably, in this embodiment, a guiding groove for guiding the sliding of the cylindrical guide rod is provided on the moving frame 3, and the length direction of the guiding groove is arranged along the first direction. When the elastic member 61 pulls the cylindrical guide rod to move to the end of the guiding groove, the cylindrical guide rod is located on the side of the feeding port away from the cutting knife 41, thereby preventing the cylindrical guide rod from blocking the conveyance of the steel bar.

[0043] In some embodiments, the above-mentioned guiding frame 6 can adopt a structure as shown in Figure 1 , Figure 3 . Referring together to Figure 1 , Figure 3 , the guiding frame 6 includes a plurality of vertical rods 62, and the plurality of vertical rods 62 are arranged in a staggered manner to form a guiding gap for guiding the steel bar. The guiding frame 6 includes a main rod body whose length direction is arranged along the first direction, and a plurality of vertical rods 62 are fixedly installed on the main rod body. Vertical rods 62 are provided on both sides of the main rod body along the second direction. The vertical rods 62 located on both sides of the main rod body form a guiding gap for accommodating the steel bar, so that the steel bar can be guided to prevent bending during the process of the steel bar pushing the moving frame 3 to move. Moreover, during the cutting of the steel bar, it can be avoided that the steel bar flies outwards to hurt the operator. And during the cutting process of the steel bar, through the guiding frame 6, the cut part of the steel bar can be guided to move along the second direction together, avoiding bending of the steel bar and affecting the normal use in the later stage.

[0044] Preferably, in this embodiment, the movement of the guiding frame 6 moves together with the cutting knife 41. When the cutting knife 41 cuts the steel bar, the cutting knife 41 will push the steel bar to move along the second direction, and the steel bar squeezes the cylindrical guide rod to move, thereby driving the guiding frame 6 to move together.

[0045] In some embodiments, the above-mentioned guiding frame 6 can adopt a structure as shown in Figure 2 , Figure 3 . Referring together to Figure 2 , Figure 3, a pressing frame 63 for pressing the steel bars downward is also installed on the moving frame 3. The mounting frame 1 is slidably arranged on the moving frame 3 in the vertical direction. A guide rod 64 penetrating the pressing frame 63 is fixedly installed on the guide frame 6. A guide groove for accommodating the guide rod 64 is arranged on the pressing frame 63. The guide groove includes a first elongated hole with a length arranged in the second direction and a second elongated hole arranged obliquely upward. A pressing frame 63 for pressing the steel bars after cutting is also installed on the moving frame 3. The length direction of the first elongated hole is arranged in the second direction. The second elongated hole is located on the side of the first elongated hole away from the cutter 41, and the second elongated hole is arranged obliquely upward in the direction away from the first elongated hole. When the guide frame 6 moves in the direction away from the cutter 41 under the driving force of the cutter 41, the guide rod 64 first slides inside the first elongated hole. At this time, the height of the pressing frame 63 does not change. When the guide rod 64 moves into the second elongated hole, when the guide rod 64 continues to move in the direction away from the cutter 41, the pressing frame 63 can be driven to move downward through the guiding of the second guiding hole. When the guide frame 6 resets, the pressing frame 63 resets together with the guide frame 6.

[0046] Specifically, in this embodiment, a guide plate for guiding the movement of the cutter 41 is arranged on the moving frame 3. The feeding port facilitating the passage of the steel bars is located on the guide plate. And a cutting edge protrudes on the side of the guide plate close to the cutter 41. The cutting edge protrudes from the side surface of the guide plate. After the cutter 41 cuts the steel bars, the end of the steel bars disengages from the cutting edge, and combined with the pressing frame 63, it can prevent the steel bars from jamming.

[0047] In some embodiments, the above-mentioned moving frame 3 can adopt a structure as Figure 3 shown. Refer to Figure 3 , the guide frame 6 includes an anti-rotation rod 65 with a length direction arranged in the first direction. A plurality of vertical rods 62 are fixedly installed on the anti-rotation rod 65. An anti-rotation groove for accommodating the anti-rotation rod 65 is arranged on the baffle 31. An anti-rotation edge slidably arranged inside the anti-rotation groove is arranged on the anti-rotation rod 65. An anti-rotation edge is arranged on the side wall of the anti-rotation rod 65, and an anti-rotation groove for accommodating the anti-rotation rod 65 is arranged on the baffle 31. One end of the anti-rotation rod 65 is slidably arranged on the moving frame 3 in the second direction, and the other end of the anti-rotation rod 65 is slidably arranged on the baffle 31 in the second direction. By supporting the anti-rotation rod 65 inside the anti-rotation groove, it can play a role in stably supporting the movement of the anti-rotation rod 65 and prevent the anti-rotation rod 65 from bending and affecting the normal use of the guide frame 6.

[0048] Preferably, in this embodiment, the anti-rotation rod 65 is fixedly installed on the top of the cylindrical guide rod. The cylindrical guide rod is slidably arranged on the moving frame 3 in the second direction, and an anti-rotation groove for preventing the cylindrical guide rod from rotating around the axis of the cylindrical guide rod on the moving frame 3 is arranged on the cylindrical guide rod.

[0049] In some embodiments, the above-mentioned pulling-back assembly 5 can adopt a structure asFigure 1 , Figure 4 the structure shown. Referring also to Figure 1 , Figure 4 , the retraction assembly 5 includes a guide wheel 51, a pull rope 52 and a gravity block 53. The guide wheel 51 is rotatably arranged at the bottom of the mounting frame 1; the pull rope 52 is wound around the outer side of the guide wheel 51, one end of the pull rope 52 is connected to the moving frame 3 for pulling the moving frame 3 to move in a direction opposite to the first direction; the gravity block 53 is installed at the other end of the pull rope 52 for pulling the pull rope 52 to move. A guide wheel 51 is rotatably arranged at the bottom of the mounting frame 1, the axis of the guide wheel 51 is arranged horizontally, and a groove for accommodating the pull rope 52 is recessed in the outer peripheral circle of the guide wheel 51. The pull rope 52 is lapped on the top of the guide wheel 51 and is located inside the groove. A gravity block 53 is fixedly installed at one end of the pull rope 52, and the gravity block 53 is suspended below the mounting frame 1. The other end of the pull rope 52 is connected to the moving frame 3. When the gravity block 53 moves downward, it will pull the pull rope 52 to drive the moving frame 3 to move in the direction close to the conveying mechanism 2. Through the setting of the gravity block 53, the force on the moving frame 3 during the movement can be kept stable, avoiding the large force and bending of the steel bar when pushing the moving frame 3 to move. At the same time, the weight of the gravity block 53 can be adjusted according to the outer diameter size of the steel bar, so as to keep a stable resistance for the moving frame 3, avoid the deformation of the steel bar, and realize the stable return of the moving frame 3.

[0050] In some embodiments, the above-mentioned mounting frame 1 may adopt the structure as shown in Figure 4 . Referring to Figure 4 , a conversion wheel 54 is rotatably arranged at the bottom of the mounting frame 1, the pull rope 52 is wound around the conversion wheel 54, and after the pull rope 52 is wound around the conversion wheel 54, it is divided into a first section 521 and a second section 522. The first section 521 is connected to the moving frame 3, the second section 522 is connected to the gravity block 53, and an adjusting assembly for adjusting the length of the second section 522 is further arranged between the moving frame 3 and the mounting frame 1. A conversion wheel 54 is rotatably arranged at the bottom of the mounting frame 1, the middle part of the pull rope 52 is wound around the conversion wheel 54 and is divided into a first section 521 and a second section 522 through the conversion wheel 54. An adjusting assembly is arranged on the second section 522 for adjusting the length of the second section 522 between the guide wheel 51 and the conversion wheel 54. When the moving frame 3 moves in the first direction, the length of the second section 522 can be reduced, so as to reduce the upward moving distance of the gravity block 53. When the moving frame 3 moves in the direction opposite to the first direction, the length of the second section 522 can be increased, so as to reduce the downward moving distance of the gravity block 53. The moving stroke of the gravity block 53 is reduced, thus saving the on-site installation space.

[0051] In some embodiments, the above-mentioned adjusting assembly may adopt the structure as shown in Figure 4 , Figure 5The structure shown. Refer also to Figure 4 and Figure 5 . The adjusting assembly includes a moving block 55 and a tensioning roller 551. The moving block 55 is slidably arranged on the moving frame 3 along the arrangement direction of the first section 521 and the second section 522. A long groove for guiding the movement of the moving block 55 is recessed in the mounting frame 1. The length direction of the long groove is inclined in the direction close to the second section 522 along the first direction; the tensioning roller 551 is rotatably arranged on the moving block 55, and the pulling rope 52 is wound around the outside of the tensioning roller 551. A connecting rod extends downward from the moving frame 3 to below the mounting frame 1. The moving block 55 is slidably arranged on the connecting rod, and the connecting rod is slidably arranged on the mounting frame 1 along the first direction. A tensioning roller 551 is rotatably arranged on the moving block 55, and a long groove for guiding the movement of the moving block 55 is provided at the bottom of the mounting frame 1. The moving block 55 is slidably arranged inside the long groove. When the moving frame 3 moves along the first direction, the moving block 55 moves in the direction close to the second section 522 through the guidance of the long groove. Thus, the length of the second section 522 between the guide pulley 51 and the conversion pulley 54 is reduced. The structure is simple, and the length of the second section 522 can be changed with the movement of the moving frame 3.

[0052] Specifically, in this embodiment, two guiding wheels are also rotatably arranged at the bottom of the mounting frame 1, and the tensioning wheel 56 is located between the two guiding wheels. The two guiding wheels are respectively used to guide the pulling rope 52 to output from the guide pulley 51 along the first direction and input to the conversion pulley 54 along the first direction.

[0053] In some embodiments, the above-mentioned moving frame 3 can adopt the structure as Figure 5 shown. Refer to Figure 5 . A sliding block 32 is slidably arranged on the moving frame 3 along the first direction. The moving block 55 is installed on the sliding block 32. Buffer members 321 are installed on both sides of the sliding block 32 along the first direction, and the other ends of the two buffer members 321 abut against the moving frame 3. A sliding block 32 is slidably arranged on the moving frame 3. The connecting rod is fixedly installed on the sliding block 32. Buffer members 321 are installed on both sides of the sliding block 32. The arrangement of the buffer members 321 can buffer the position of the sliding block 32. When the steel bar abuts against the baffle 31, the position of the sliding block 32 can be buffered through the buffer members 321. When the position of the sliding block 32 changes, the length of the second section 522 of the pulling rope 52 can be changed, thereby avoiding the pulling rope 52 being subjected to a large pulling force and affecting the service life of the pulling rope 52.

[0054] Specifically, in this embodiment, the buffer member 321 is a spring, and the spring is convenient for procurement and installation.

[0055] In some embodiments, the above-mentioned conveying mechanism 2 can adopt the structure as Figure 1 shown. Refer to Figure 1, the conveying mechanism 2 includes a rotating roller 21, a guiding roller 22 and a driving member. The rotating roller 21 is rotatably arranged on the mounting frame 1; the guiding roller 22 is rotatably arranged on the mounting frame 1 and is arranged parallel to the rotating roller 21 at an interval. The guiding roller 22 and the rotating roller 21 form a conveying groove for accommodating steel bars; the driving member is mounted on the mounting frame 1, and the driving end of the driving member is in transmission connection with the rotating roller 21 for driving the rotating roller 21 to rotate. The rotating roller 21 and the guiding roller 22 are arranged parallel to each other at an interval in the vertical direction, the rotating roller 21 is located below the guiding roller 22, the driving member is a motor, and the rotating shaft of the driving member is in transmission connection with the rotating roller 21. And a pressing block is slidably arranged on the mounting frame 1 in the vertical direction, and the guiding roller 22 is rotatably arranged on the pressing block. A driving rod for driving the pressing block to move downward is also threadedly connected to the mounting frame 1. By adjusting the position of the guiding roller 22, the steel bar is clamped between the rotating roller 21 and the guiding roller 22 to ensure the stability of steel bar conveying.

[0056] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A steel bar cutting device for building construction, characterized in that, Comprising: Mounting frame (1); Conveying mechanism (2), mounted on the mounting frame (1) for conveying steel bars, defining the conveying direction of the steel bars as the first direction; Moving frame (3), slidably arranged on the mounting frame (1) along the first direction, a blanking mechanism (4) for cutting the steel bars is mounted on the moving frame (3), a baffle (31) is arranged on the side of the blanking mechanism (4) away from the conveying mechanism (2) along the first direction, and the end of the steel bar can abut against the baffle (31); Pull-back assembly (5), mounted between the mounting frame (1) and the moving frame (3) for pulling the moving frame (3) to move in the direction opposite to the steel bar conveying direction.

2. The steel bar cutting device for building construction according to claim 1, characterized in that The blanking mechanism (4) includes a cutting knife (41) slidably arranged on the moving frame (3), defining the sliding direction of the cutting knife (41) as the second direction, a guiding frame (6) is slidably arranged on the opposite side of the cutting knife (41) along the second direction, and an elastic member (61) for pulling the guiding frame (6) to move towards the cutting knife (41) is further arranged on the moving frame (3).

3. The steel bar cutting device for building construction according to claim 2, characterized in that, The guiding frame (6) includes a plurality of vertical rods (62), and the plurality of vertical rods (62) are arranged staggered to form a guiding gap for guiding the steel bars.

4. The steel bar cutting device for building construction according to claim 2, characterized in that, A pressing frame (63) for pressing the steel bar downward is further mounted on the moving frame (3), the mounting frame (1) is slidably arranged on the moving frame (3) in the vertical direction, a guiding rod (64) penetrating the pressing frame (63) is fixedly mounted on the guiding frame (6), a guiding groove for accommodating the guiding rod (64) is arranged on the pressing frame (63), and the guiding groove includes a first elongated hole with a length arranged along the second direction and a second elongated hole arranged obliquely upward.

5. The steel bar cutting device for building construction according to claim 3, characterized in that, The guiding frame (6) includes an anti-rotation rod (65) with a length direction arranged along the first direction, a plurality of the vertical rods (62) are fixedly mounted on the anti-rotation rod (65), an anti-rotation groove for accommodating the anti-rotation rod (65) is arranged on the baffle (31), and an anti-rotation edge slidably arranged inside the anti-rotation groove is arranged on the anti-rotation rod (65).

6. The steel bar cutting device for building construction according to claim 1, characterized in that, The pull-back assembly (5) includes: Guide wheel (51), rotatably arranged at the bottom of the mounting frame (1); Pulling rope (52), wound around the outside of the guide wheel (51), one end of the pulling rope (52) is connected to the moving frame (3) for pulling the moving frame (3) to move in the direction opposite to the first direction; Gravity block (53), mounted at the other end of the pulling rope (52) for pulling the pulling rope (52) to move.

7. The steel bar cutting device for building construction according to claim 6, characterized in that, A conversion wheel (54) is rotatably provided at the bottom of the mounting bracket (1). The pulling rope (52) is wound around the conversion wheel (54), and after being wound around the conversion wheel (54), the pulling rope (52) is divided into a first section (521) and a second section (522). The first section (521) is connected to the moving bracket (3), and the second section (522) is connected to the gravity block (53). An adjusting assembly for adjusting the length of the second section (522) is further provided between the moving bracket (3) and the mounting bracket (1).

8. The steel bar cutting device for building construction according to claim 7, characterized in that, The adjusting assembly includes: A moving block (55) is slidably arranged on the moving bracket (3) along the arrangement direction of the first section (521) and the second section (522). A long groove for guiding the movement of the moving block (55) is recessed in the mounting bracket (1), and the length direction of the long groove is inclined in the first direction towards the second section (522). A tensioning roller (551) is rotatably arranged on the moving block (55), and the pulling rope (52) is wound around the outer side of the tensioning roller (551).

9. The steel bar cutting device for building construction according to claim 8, characterized in that, A sliding block (32) is slidably arranged on the moving bracket (3) along the first direction. The moving block (55) is installed on the sliding block (32). Buffer members (321) are installed on both sides of the sliding block (32) along the first direction, and the other ends of the two buffer members (321) abut against the moving bracket (3).

10. The steel bar cutting device for building construction according to claim 1, characterized in that, The conveying mechanism (2) includes: A rotating roller (21) is rotatably arranged on the mounting bracket (1). A guiding roller (22) is rotatably arranged on the mounting bracket (1) and is arranged in parallel with the rotating roller (21) at an interval. The guiding roller (22) and the rotating roller (21) form a conveying groove for accommodating steel bars. A driving member is installed on the mounting bracket (1), and the driving end of the driving member is in transmission connection with the rotating roller (21) for driving the rotating roller (21) to rotate.

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