Reinforcing steel bar binding device for municipal bridge and using method of reinforcing steel bar binding device

Abstract

The invention relates to the technical field of roads and bridges, and discloses a reinforcing steel bar binding device for municipal bridges and a using method thereof.The reinforcing steel bar binding device comprises a sleeve main body, a driver is arranged on one side of the interior of the sleeve main body, a connecting block is fixedly connected to the other side of the interior of the sleeve main body, and a bearing is fixedly connected to one side of the connecting block; and a rotating shaft is fixedly connected to the interior of the bearing, a first gear is fixedly connected to one end of the rotating shaft, a disc is fixedly connected to one side of the first gear, and a fixing strip is fixedly connected to one side of the disc. The reinforcing steel bar bundling device has the following advantages and effects that a thin iron wire passes through a hook, a second motor is started to drive a first gear and a second gear to rotate to bundle reinforcing steel bars, convenience and rapidness are achieved, use by workers is facilitated, and after the reinforcing steel bars are bundled, the workers start an electric telescopic rod to drive a blade to move in the direction of a pressing block; and therefore, the thin iron wires can be cut off, workers can conveniently carry out the next work, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to a steel bar binding device, in particular to a steel bar binding device used in municipal road and bridge engineering and a use method thereof. Background Art

[0002] Roads and bridges are generally composed of several major parts, such as roadbed, pavement, bridges, tunnel engineering and traffic engineering facilities. In the construction process of concrete buildings for roads and bridges, steel bar engineering is one of the projects with the largest workload, and steel bar binding is one of the most time-consuming and labor-intensive procedures in steel bar engineering. Therefore, there is an urgent need for a steel bar binding device for municipal road and bridge engineering and a method for using the same.

[0003] The current steel bar binding construction basically still uses steel bar binding hooks and is manually tied. Its biggest disadvantage is that the construction speed is slow, which brings great cost and construction period pressure to construction companies, and the steel wire needs to be cut manually during use. Summary of the invention

[0004] The purpose of the present invention is to provide a steel bar binding device for municipal bridges and a method of using the same, which can solve the problems raised in the above-mentioned background technology.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A steel bar binding device for a municipal bridge comprises a sleeve body.

[0007] A driver is provided on one side inside the sleeve body;

[0008] A connecting block is fixedly connected to the other side of the sleeve body, a bearing is fixedly connected to one side of the connecting block, a rotating shaft is fixedly connected to the inside of the bearing, one end of the rotating shaft is fixedly connected to a first gear, a disc is fixedly connected to one side of the first gear, a fixing bar is fixedly connected to one side of the disc, an electric telescopic rod is fixedly connected to one side of the fixing bar, a blade is fixedly connected to one end of the electric telescopic rod, a fixing block is fixedly connected to one side of the disc, and a pressure block is fixedly connected to one side of the fixing block;

[0009] A hook is provided on one side of the sleeve body;

[0010] A motor is fixedly connected to the lower part of the other side of the connecting block, and a second gear is fixedly connected to one end of the motor, and the second gear is meshed with the first gear;

[0011] A first handle and a second handle are fixedly connected to both sides of the lower surface of the sleeve body, respectively, and a button is provided on one side of the first handle.

[0012] In a preferred embodiment, the hook is provided with a rotating arc segment, which is rotatably mounted on the inner side of the hook, an outer tooth portion is provided on the outer wall of the rotating arc segment, a stepper motor 1 is mounted on the hook, and an output end of the stepper motor 1 drives the outer tooth portion to rotate via a gear;

[0013] A limited position groove is arranged on the inner wall of the rotating arc segment;

[0014] Two guide posts are symmetrically distributed on the disc, clamping frames are slidably matched on the two guide posts, a connecting spring is arranged between the clamping frame and the disc, and the clamping frame is used for clamping the thin iron wire.

[0015] In a preferred embodiment, the clamping frame is internally slidably matched with two symmetrically distributed clamping plates, one of which is provided with a separator, which is used to separate the two ends of the thin iron wire, and the other clamping plate is provided with an insertion hole, which is adapted to fit the separator;

[0016] A second stepper motor is installed on the top of the clamping frame, a rack plate is installed on the top of the two clamping plates, and the output end of the second stepper motor is meshed with the two rack plates through a gear.

[0017] In a preferred embodiment, a hinge is fixedly connected to the front of the second handle, and a movable door is fixedly connected to one side of the hinge;

[0018] An I-shaped wheel is arranged inside the second handle, and the material of the I-shaped wheel is plastic;

[0019] The lower surface of the second handle is fixedly connected with a hinge, and the interior of the hinge is rotatably connected with a first stopper and a second stopper;

[0020] A wire feeding mechanism is installed inside the second handle.

[0021] Preferably, the wire feeding mechanism comprises a second motor, and the second motor is fixedly connected to the inside of the second handle;

[0022] The output end of the second motor is fixedly connected to a third gear;

[0023] The third gear is meshed with a fourth gear;

[0024] Both sides of the fourth gear are rotatably connected to the inner wall of the second handle;

[0025] The third gear and the fourth gear are both provided with limiting grooves on their exteriors, and the limiting grooves are used for the thin iron wire to pass through.

[0026] Preferably, the surfaces of the first handle and the second handle are both fixedly connected with anti-slip protrusions, and the anti-slip protrusions are circular in shape.

[0027] Preferably, the number of the anti-slip protrusions is several, and the several anti-slip protrusions are fixedly connected to the surfaces of the first handle and the second handle in the form of a ring array.

[0028] A method for using a steel bar binding device for a municipal bridge, comprising:

[0029] Step 1: Install the I-shaped wheel

[0030] The hinge is rotated, and the first stopper and the second stopper open the bottom of the movable door, and the upward movable door is opened through the hinge, and the I-shaped wheel wrapped with a thin iron wire is installed, and it is necessary to ensure that the thin iron wire is in the limit groove;

[0031] Step 2, wire feeding

[0032] The second motor rotates, driving the third gear and the fourth gear to rotate synchronously and convey the thin iron wire in the limiting groove into the hook until it is in the limiting groove;

[0033] Step 3: Tie the steel bars

[0034] 34) Place the hook on one side of the steel bar node, and the hook is located in the middle between the transverse steel bar and the longitudinal steel bar at the node, and the hook is close to the node position. The stepper motor drives the rotating arc end to rotate a certain angle through the gear. When the stepper motor rotates, the second motor is turned on, and the wire feeding speed is lower than the rotating speed of the rotating arc end. It is necessary to ensure that the thin iron wire does not fall out of the limiting groove;

[0035] 35) The second motor rotates, driving the third gear and the fourth gear to rotate synchronously and convey the thin iron wire in the limit groove into the hook until the free end of the thin iron wire passes through the clamping frame;

[0036] 36) Stepper motor 2 drives two clamping plates to approach each other through gears and clamp the two ends of the thin iron wire. After clamping, the thin iron wire is pushed through the pushing head so that the intersection point of the thin iron wire is closest to the steel bar node;

[0037] 37) The electric telescopic rod drives the blade to cut the thin iron wire. After cutting, the motor starts to drive the second gear and the first gear. The clamping frame rotates and binds the thin iron wire at the node of the transverse steel bar and the longitudinal steel bar. The screwing point of the thin iron wire gradually moves away from the position close to the steel bar node.

[0038] The beneficial effects of the present invention are:

[0039] 1. The present invention, by arranging a hook, a motor, a second gear, a first handle, a second handle, a button, a second motor, a third gear, a fourth gear and a limit groove, when tying the steel bars, the staff holds the first handle and the second handle tightly, and then starts the second motor, the output end of the second motor drives the third gear and the fourth gear to rotate, and the thin iron wire on the I-shaped wheel is wound in the limit grooves on the first handle and the second handle, the third gear and the fourth gear rotate, and then can drive the thin iron wire upward, and the thin iron wire is passed through the hook and the second motor is started to drive the first gear and the second gear to rotate to tie the steel bars, which is convenient and fast, and easy for the staff to use.

[0040] 2. The present invention, by arranging bearings, rotating shafts, first gears, discs, fixing bars, electric telescopic rods, blades, fixing blocks, pressing blocks, hooks, motors and second gears, after bundling the steel bars, the staff starts the electric telescopic rod to drive the blade to move toward the pressing block, thereby being able to cut the thin iron wires, making it convenient for the staff to carry out the next step of work and improving work efficiency.

[0041] 3. The present invention, by setting a clamping plate and a rotating arc segment, clamps the thin iron wire and directional conveys it to bypass the steel bar node, and forms an α-shaped structure after clamping and then cuts it off, so as to prevent the thin iron wire between the limit groove and the clamping plate from being twisted, and the problem of excessive twisting and breaking during subsequent twisting. If the method is used, cutting first and then clamping, it is easy to cause the problem that the thin iron wire cannot be effectively twisted and compacted.

[0042] 4. The present invention, by setting the clamping plate as an axially flexible feeding structure + pushing towards the steel bar node before twisting, can realize automatic feeding close to the steel bar node during twisting through the flexible feeding method of the clamping frame. At the same time, because the pushing operation is performed at the steel bar node before twisting, it is ensured that the twisting point is closer to the steel bar node, and the direction of the twisting node is away from the steel bar node. Compared with the previous twisting point that is away from the steel bar node and towards the steel bar node, this twisting method needs to gradually overcome the resistance in the twisting direction close to the steel bar node to gradually approach the steel bar node, which is more likely to cause the problem of excessive twisting of the thin iron wire and breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0044] Figure 1 It is a structural schematic diagram of the present invention;

[0045] Figure 2 It is a front view structural schematic diagram of the present invention;

[0046] Figure 3 It is a structural schematic diagram of the motor of the present invention;

[0047] Figure 4 is a schematic structural diagram of a second handle of the present invention;

[0048] Figure 5 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0049] Figure 6 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0050] Figure 7 For the present invention Figure 5 Front view of the middle clamping frame;

[0051] Figure 8 for Figure 7 A top view of the middle push piece;

[0052] Fig. 9 for Figure 7 Top view of the middle rack plate and gear;

[0053] Fig.10 It is a diagram of the internal structure of the hook in the present invention.

[0054] In the figure:

[0055] 1. Casing body; 2. Driver; 3. Connecting block; 4. Bearing; 5. Rotating shaft; 6. First gear; 7. Disc; 71. Guide column; 72. Clamping frame; 721. Clamping plate; 722. Clamping block; 723. Pushing member; 724. Stepping motor 2; 725. Rack plate; 726. Pushing head; 727. Pushing telescopic rod 1; 728. Pushing telescopic rod 2; 73. Connecting spring; 8. Fixing bar; 9. Electric telescopic rod; 10. Blade; 11. Fixed block; 12. Pressing block; 13. Hook; 131. Rotating arc segment; 132. Stepping motor 1; 133. External tooth portion; 14. Motor; 15. Second gear; 16. First handle; 17. Second handle; 18. Button; 19. Second motor; 20. Third gear; 21. Fourth gear; 22. Limiting groove; 23. Hinge; 24. Movable door; 25. I-shaped wheel; 26. Hinge; 27. First stopper; 28. Second stopper. DETAILED DESCRIPTION

[0056] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] Reference Figure 1-6 A steel bar binding device for a municipal bridge comprises a sleeve body 1, and a driver 2 (drive control module) is arranged on one side inside the sleeve body 1.

[0058] A connecting block 3 is fixedly connected to the other side of the sleeve body 1, a bearing 4 is fixedly connected to one side of the connecting block 3, a rotating shaft 5 is fixedly connected to the inside of the bearing 4, one end of the rotating shaft 5 is fixedly connected to a first gear 6, one side of the first gear 6 is fixedly connected to a disc 7, one side of the disc 7 is fixedly connected to a fixing bar 8, one side of the fixing bar 8 is fixedly connected to an electric telescopic rod 9, one end of the electric telescopic rod 9 is fixedly connected to a blade 10, one side of the disc 7 is fixedly connected to a fixing block 11, and one side of the fixing block 11 is fixedly connected to a pressing block 12.

[0059] A hook 13 is provided on one side of the sleeve body 1 .

[0060] A motor is fixedly connected to the lower part of the other side of the connecting block 3 , and a second gear 15 is fixedly connected to one end of the motor. The second gear 15 is meshed with the first gear 6 .

[0061] A first handle 16 and a second handle 17 are fixedly connected to both sides of the lower surface of the sleeve body 1 , respectively. A button 18 is disposed on one side of the first handle 16 .

[0062] like Fig.10 As shown, the hook 13 is provided with a rotating arc segment 131, which is rotatably mounted on the inner side of the hook 13, and an outer tooth portion 133 is provided on the outer wall of the rotating arc segment 131. A stepper motor 132 is installed on the hook 13, and the output end of the stepper motor 132 drives the outer tooth portion 133 to rotate through a gear;

[0063] A limiting groove is provided on the inner wall of the rotating arc segment 131;

[0064] like Figure 7 value Fig.10 As shown, two guide posts 71 are symmetrically distributed on the disc 7, and clamping frames 72 are slidably matched on the two guide posts 71. A connecting spring 73 is provided between the clamping frame 72 and the disc 7, and the clamping frame 72 is used to clamp the thin iron wire.

[0065] The clamping frame 72 is internally slidably fitted with two symmetrically distributed clamping plates 721;

[0066] A second stepper motor 724 is installed on the top of the clamping frame 72, and a rack plate 725 is installed on the top of the two clamping plates 721. The output end of the second stepper motor 724 is meshed with the two rack plates 725 through a gear.

[0067] Two clamping blocks 722 are installed on the opposite side of the clamping plate 721, and the two clamping blocks 722 are connected to the clamping plate 721 via elastic columns.

[0068] A pushing member 723 is disposed in the middle of one side opposite to the two clamping plates 721 .

[0069] The pushing member 723 includes a pushing telescopic rod 1 727 rotatably installed in the middle of one of the clamping plates 721 and a pushing telescopic rod 2 728 rotatably installed in the middle of the other clamping plate 721. A pushing head 726 is provided on the side of the pushing telescopic rod 1 727 and the pushing telescopic rod 2 728 away from the clamping plate 721.

[0070] The stepper motor 2 724 drives the gear and rack plate 725 to drive the two clamping plates 721 to drive the clamping block 722 to perform the clamping operation. The pushing head 726, under the joint action of the pushing telescopic rod 2 728 and the pushing telescopic rod 1 727 (both are elastic telescopic structures), realizes the pushing of the thin iron wire to the steel bar node. The screwing point starts from the position closest to the steel bar point and gradually works outward. The screwing direction of the prior art is from the outside to the inside, so that the final screwing tightness does not meet the requirements, and it is more likely to cause the problem of excessive screwing and breakage of the thin iron wire.

[0071] A hinge 23 is fixedly connected to the front of the second handle 17, and a movable door 24 is fixedly connected to one side of the hinge 23;

[0072] An I-shaped wheel 25 is disposed inside the second handle 17 . The I-shaped wheel 25 is made of plastic. The I-shaped wheel 25 is used to hold the winding thin iron wire.

[0073] A hinge 26 is fixedly connected to the lower surface of the second handle 17, and a first stopper 27 and a second stopper 28 are rotatably connected inside the hinge 26. The bottom of the movable door 24 can be locked or opened by rotating the hinge 26 90 degrees in the opposite direction.

[0074] A wire feeding mechanism is installed inside the second handle 17 .

[0075] The wire feeding mechanism includes a second motor 19, which is fixedly connected to the inside of the second handle 17;

[0076] The output end of the second motor 19 is fixedly connected to a third gear 20;

[0077] The third gear 20 is meshed with a fourth gear 21;

[0078] Both sides of the fourth gear 21 are rotatably connected to the inner wall of the second handle 17;

[0079] The third gear 20 and the fourth gear 21 are both provided with limiting grooves 22 on their exteriors, and the limiting grooves 22 are used for thin iron wires to pass through.

[0080] The surfaces of the first handle 16 and the second handle 17 are both fixedly connected with anti-skid protrusions, and the shape of the anti-skid protrusions is circular.

[0081] The number of the anti-slip protrusions is several, and the several anti-slip protrusions are fixedly connected to the surfaces of the first handle 16 and the second handle 17 in the form of a ring array.

[0082] The third gear 20 and the fourth gear 21 are driven to rotate by the second motor 19, thereby driving the thin iron wire to be transported until it enters the inner area of ​​the hook 13, so as to achieve the insertion and retraction of the thin iron wire.

[0083] Instructions for use, including:

[0084] Step 1: Installation of I-shaped wheel 25

[0085] The hinge 26 is rotated, and the first stopper 27 and the second stopper 28 open the bottom of the movable door 24, and the upward movable door 24 is opened through the hinge 23, and the I-shaped wheel 25 with the thin iron wire is installed, and it is necessary to ensure that the thin iron wire is in the limiting groove 22;

[0086] Step 2, wire feeding

[0087] The second motor 19 rotates, driving the third gear 20 and the fourth gear 21 to rotate synchronously and conveying the thin iron wire in the limiting groove 22 into the hook 13 until it is in the limiting groove;

[0088] Step 3: Tie the steel bars

[0089] 38) The hook 13 is placed on one side of the steel bar node, and the hook 13 is located in the middle position between the transverse steel bar and the longitudinal steel bar at the node, and the hook 13 is placed close to the node position, and the stepper motor 132 drives the rotating arc end 131 to rotate a certain angle through the gear. While the stepper motor 132 rotates, the second motor 19 is turned on, and the wire feeding speed is lower than the rotation speed of the rotating arc end 131, and it is necessary to ensure that the thin iron wire does not fall out of the limiting groove;

[0090] 39) The second motor 19 rotates, driving the third gear 20 and the fourth gear 21 to rotate synchronously and convey the thin iron wire in the limiting groove 22 to the hook 13 until the free end of the thin iron wire passes through the clamping frame 72;

[0091] 40) Stepper motor 2 724 drives two clamping plates 721 to approach each other through gears and clamp the two ends of the thin iron wire. After clamping, the pushing head 726 pushes the thin iron wire so that the intersection point of the thin iron wire is closest to the steel bar node;

[0092] 41) The electric telescopic rod 9 drives the blade 10 to cut the thin iron wire. After cutting, the motor starts to drive the second gear 15 and the first gear 6, and the clamping frame 72 rotates and binds the thin iron wire at the node of the transverse steel bar and the longitudinal steel bar. The twisting point of the thin iron wire gradually moves away from the position close to the steel bar node.

Claims

1. A steel bar binding device for a municipal bridge, comprising a sleeve body (1), characterized in that: A driver (2) is provided on one side inside the sleeve body (1); The other side of the sleeve body (1) is fixedly connected to a connection block (3), one side of the connection block (3) is fixedly connected to a bearing (4), the inside of the bearing (4) is fixedly connected to a rotating shaft (5), one end of the rotating shaft (5) is fixedly connected to a first gear (6), one side of the first gear (6) is fixedly connected to a disc (7), one side of the disc (7) is fixedly connected to a fixing bar (8), one side of the fixing bar (8) is fixedly connected to an electric telescopic rod (9), one end of the electric telescopic rod (9) is fixedly connected to a blade (10), one side of the disc (7) is fixedly connected to a fixing block (11), and one side of the fixing block (11) is fixedly connected to a pressing block (12); A hook (13) is provided on one side of the sleeve body (1); A motor is fixedly connected to the lower part of the other side of the connecting block (3), and a second gear (15) is fixedly connected to one end of the motor, and the second gear (15) is meshed with the first gear (6); A first handle (16) and a second handle (17) are respectively fixedly connected to the two sides of the lower surface of the sleeve body (1), and a button (18) is provided on one side of the first handle (16).

2. A steel bar tying device for municipal bridges according to claim 1, characterized in that: The hook (13) is provided with a rotating circular arc section (131), the rotating circular arc section (131) is rotatably mounted on the inner side of the hook (13), an outer tooth portion (133) is provided on the outer wall of the rotating circular arc section (131), a stepping motor (132) is mounted on the hook (13), and the output end of the stepping motor (132) drives the outer tooth portion (133) to rotate via a gear; A limiting groove is provided on the inner wall of the rotating arc segment (131); Two guide posts (71) are symmetrically distributed on the disc (7), a clamping frame (72) is slidably matched on the two guide posts (71), a connecting spring (73) is arranged between the clamping frame (72) and the disc (7), and the clamping frame (72) is used for clamping the thin iron wire.

3. A steel bar tying device for municipal bridges according to claim 2, characterized in that: The clamping frame (72) is internally slidably fitted with two symmetrically distributed clamping plates (721); A second stepping motor (724) is installed on the top of the clamping frame (72), a rack plate (725) is installed on the top of the two clamping plates (721), and the output end of the second stepping motor (724) is meshed with the two rack plates (725) through a gear; Two clamping blocks (722) are installed on one side opposite to the clamping plate (721) and are distributed up and down. Both clamping blocks (722) are connected to the clamping plate (721) via elastic columns. A pushing member (723) is provided in the middle of one side opposite to the two clamping plates (721).

4. The steel bar binding device for municipal bridges according to claim 2 is characterized in that: The pushing member (723) comprises a pushing telescopic rod 1 (727) rotatably mounted in the middle of one of the clamping plates (721) and a pushing telescopic rod 2 (728) rotatably mounted in the middle of the other clamping plate (721), and a pushing head (726) is provided on the side of the pushing telescopic rod 1 (727) and the pushing telescopic rod 2 (728) away from the clamping plate (721).

5. A steel bar tying device for municipal bridges according to claim 4, characterized in that: A hinge (23) is fixedly connected to the front of the second handle (17), and a movable door (24) is fixedly connected to one side of the hinge (23); An I-shaped wheel (25) is arranged inside the second handle (17), and the material of the I-shaped wheel (25) is plastic; The lower surface of the second handle (17) is fixedly connected to a hinge (26), and the interior of the hinge (26) is rotatably connected to a first stopper (27) and a second stopper (28); A wire feeding mechanism is installed inside the second handle (17).

6. A steel bar tying device for municipal bridges according to claim 5, characterized in that: The wire feeding mechanism comprises a second motor (19), and the second motor (19) is fixedly connected inside the second handle (17); The output end of the second motor (19) is fixedly connected to a third gear (20); The third gear (20) is meshed with a fourth gear (21); Both sides of the fourth gear (21) are rotatably connected to the inner wall of the second handle (17); The third gear (20) and the fourth gear (21) are both provided with limiting grooves (22) on their exteriors, and the limiting grooves (22) are used for the thin iron wire to pass through.

7. A reinforcement tying device for municipal bridges according to claim 6, characterized in that: The surfaces of the first handle (16) and the second handle (17) are both fixedly connected with anti-skid protrusions, and the anti-skid protrusions are circular in shape.

8. The steel bar binding device for municipal bridges according to claim 7, characterized in that: The number of the anti-slip protrusions is several, and the several anti-slip protrusions are fixedly connected to the surfaces of the first handle (16) and the second handle (17) in the form of a ring array.

9. The method for using the steel bar binding device for municipal bridges according to claim 8, characterized in that: include: Step 1: Install the spool (25) The hinge (26) is rotated, and the first stopper (27) and the second stopper (28) open the bottom of the movable door (24), and the upward movable door (24) is opened through the hinge (23), and the I-shaped wheel (25) wound with a thin iron wire is installed, and it is necessary to ensure that the thin iron wire is in the limiting groove (22); Step 2, wire feeding The second motor (19) rotates, driving the third gear (20) and the fourth gear (21) to rotate synchronously and conveying the thin iron wire in the limiting groove (22) into the hook (13) until it is in the limiting groove; Step 3: Tie the steel bars 31) placing the hook (13) on one side of the steel bar node, and the hook (13) is located in the middle between the transverse steel bar and the longitudinal steel bar at the node, and the hook (13) is close to the node position, the stepper motor (132) drives the rotating arc end (131) to rotate a certain angle through the gear, and the second motor (19) is turned on while the stepper motor (132) rotates, and the wire feeding speed is lower than the rotation speed of the rotating arc end (131), and it is necessary to ensure that the thin iron wire does not fall out of the limiting groove; 32) the second motor (19) rotates, driving the third gear (20) and the fourth gear (21) to rotate synchronously and convey the thin iron wire in the limiting groove (22) into the hook (13) until the free end of the thin iron wire passes through the clamping frame (72); 33) Stepper motor 2 (724) drives two clamping plates (721) to approach each other through gears and clamp the two ends of the thin iron wire. After clamping, the thin iron wire is pushed through the pushing head (726) so that the intersection point of the thin iron wire is closest to the steel bar node; The electric telescopic rod (9) drives the blade (10) to cut the thin iron wire. After cutting, the motor starts to drive the second gear (15) and the first gear (6), and the clamping frame (72) rotates and binds the thin iron wire at the node of the transverse steel bar and the longitudinal steel bar. The twisting point of the thin iron wire gradually moves away from the position close to the steel bar node.

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