Convenient steel bar bender

Abstract

The utility model is applicable to the technical field of steel bar benders, and discloses a convenient steel bar bender which is characterized in that a hydraulic cylinder is fixedly mounted on the side of a mounting frame, a bending push plate is fixedly mounted at the top end of the side of a piston rod of the hydraulic cylinder, a hollow pipe is fixedly mounted on one side, far away from the hydraulic cylinder, of the top of the mounting frame, and an abutting arc plate is slidably mounted on the outer side of the mounting frame; a switching mechanism is arranged on the outer side of each hollow pipe and is in transmission connection with the outer side wall of the corresponding abutting arc plate, a bidirectional driving mechanism is arranged in each hollow pipe and is in transmission connection with the switching mechanism, and a bidirectional lead screw is vertically and rotationally installed in each hollow pipe through a bearing. According to the technical scheme, the distance between the side end of the abutting arc plate and the two ends of the side edge of the bending push plate is adjusted, it is guaranteed that the abutting arc plate and the bending push plate can conduct abutting limiting treatment on steel bars of different thickness models, and the situation that the bending machining quality is affected due to the fact that the steel bars shake at will when placed is avoided.

Description

Technical Field

[0001] This utility model applies to the field of rebar bending machine technology, and particularly relates to a convenient rebar bending machine. Background Technology

[0002] Currently, handheld rebar bending machines (also known as portable rebar bending machines or electric rebar bending machines) are lightweight and efficient rebar processing equipment designed for scenarios such as building construction, bridge engineering, and precast component factories. They achieve rapid bending and shaping of rebars through a motor-driven gear or hydraulic system. They are characterized by small size, light weight, and flexible operation, and can replace traditional manual or fixed rebar bending machines, significantly improving construction efficiency.

[0003] However, when using handheld rebar bending machines to compress and bend construction rebar, for rebars of different diameters, the operator places the rebar at the front of the bending machine, and then a hydraulic cylinder drives the extrusion block to push against the rebar. The rebar bends under the interaction of the extrusion block and the outer wall of the pushing column. During this process, smaller diameter rebars cannot directly contact the pushing column for bending; they can only be pushed by the continuous pushing of the extrusion block to make contact with the pushing column for bending. This causes the bending point to shift during the rebar's movement, thus affecting the bending quality. Therefore, we propose a portable rebar bending machine. Utility Model Content

[0004] The main purpose of this utility model is to provide a convenient rebar bending machine that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A portable rebar bending machine includes a mounting frame, a hydraulic cylinder is fixedly mounted on the side of the mounting frame, a bending push plate is fixedly mounted on the top of the piston rod of the hydraulic cylinder, and a hollow tube is fixedly mounted on the top of the mounting frame away from the hydraulic cylinder.

[0007] An abutting arc plate is slidably mounted on the outer side of the mounting bracket. A conversion mechanism is provided on the outer side of the hollow tube, and the conversion mechanism is connected to the outer wall of the abutting arc plate. A bidirectional drive mechanism is provided inside the hollow tube, and the bidirectional drive mechanism is connected to the conversion mechanism.

[0008] As an optional solution to the technical solution of this application, the bidirectional drive mechanism includes a bidirectional lead screw. Each hollow tube has a bidirectional lead screw installed vertically via bearings. Each bidirectional lead screw has a lifting sleeve threadedly connected to both sides of its outer surface. Each lifting sleeve has a connecting rod fixedly installed on its outer side. Each connecting rod has a connecting rod fixedly installed at its top side. Sliding plates are slidably installed at both ends of the hollow tube near the hydraulic cylinder. The top side of the connecting rod is fixedly connected to the outer wall of the sliding plate. A servo motor is fixedly installed at the top of the outer surface of the hollow tube. A coupling at the bottom of the servo motor drive shaft is fixedly connected to the top of the bidirectional lead screw. Limiting grooves are vertically formed on both sides of the outer surface of the hollow tube. The connecting rod is slidably inserted into the limiting groove.

[0009] By adopting the above technical solution, the distance between the side end of the abutment arc plate and the two ends of the bending push plate can be adjusted through the rotational transmission action of the bidirectional screw on the lifting sleeve and the connecting transmission action of the connecting rod and the sliding plate. This ensures that the abutment arc plate and the bending push plate can perform abutment and limit treatment on steel bars of different thicknesses, preventing the steel bars from shaking arbitrarily during placement and affecting the bending processing quality.

[0010] As an optional solution to the technical solution of this application, the conversion mechanism includes a push rod, and each of the sliding plates has a push rod that is inclinedly hinged to the outside of the sliding plate via a rotating shaft, and the top edge of the push rod is hinged to the outer wall of the abutting arc plate via a rotating shaft.

[0011] By adopting the above technical solution, the vertical movement force of the lifting sleeve can be converted into a horizontal pushing and pulling force on the sliding plate through the connecting transmission action of the push rod.

[0012] As an optional solution to the technical solution of this application, a guide slider is fixedly installed at the bottom of the abutting arc plate, and a guide groove is opened inside the top of the mounting frame.

[0013] By adopting the above technical solution, the guide slide groove guides the guide slider, so that the abutting arc plate can only move horizontally on the surface of the mounting frame under the abutting action of the push rod, thereby adjusting the distance between the abutting arc plate and the bending push plate, and thus ensuring the rationality of the transmission adjustment of the overall mechanism.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. A convenient rebar bending machine according to the technical solution of this application, wherein a hollow tube is set on the outside of the mounting frame, and a two-way screw is set inside the hollow tube. Under the rotational transmission action of the two-way screw on the two lifting sleeves on both sides, the two sets of lifting sleeves move vertically towards or relative to each other inside the hollow tube. Subsequently, under the connecting transmission action of the connecting rod to the sliding plate, the sliding plate can be driven to move vertically towards or relative to each other on the outer wall of the hollow tube synchronously. Then, under the connecting transmission action of the push rod, the vertical movement force of the lifting sleeves and the sliding plate can be converted into a horizontal pushing force on the abutting arc plate. This adjusts the distance between the side end of the abutting arc plate and the two ends of the bending push plate, ensuring that the abutting arc plate and the bending push plate can perform abutting and limiting treatment on rebars of different thicknesses, avoiding arbitrary shaking of the rebars during placement and affecting the bending processing quality.

[0016] 2. A convenient rebar bending machine according to the technical solution of this application, by setting a guide slider at the bottom of the abutting arc plate and a guide groove at the top of the mounting frame, combined with the guiding sliding action of the guide groove on the guide slider, makes the abutting arc plate only move horizontally on the surface of the mounting frame under the abutting action of the push rod, thereby adjusting the distance between the abutting arc plate and the bending push plate, and thus ensuring the rationality of the transmission adjustment of the overall mechanism. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a convenient rebar bending machine according to the present invention;

[0018] Figure 2 This is a front view sectional view of the hollow tube structure of a convenient rebar bending machine according to this utility model.

[0019] Figure 3 This is a top view sectional diagram of the abutting arc plate of a convenient rebar bending machine according to this utility model.

[0020] Reference numerals: 1. Mounting bracket; 11. Hydraulic cylinder; 12. Bending push plate; 2. Hollow tube; 21. Two-way lead screw; 22. Lifting sleeve; 23. Connecting rod; 24. Sliding plate; 25. Abutting arc plate; 26. Push rod; 27. Servo motor; 28. Limiting groove; 3. Guide slider; 31. Guide groove. Detailed Implementation

[0021] like Figure 1-3 As shown, this utility model provides a technical solution: a convenient rebar bending machine, wherein a hollow tube 2 is fixedly installed on the top side of the mounting frame 1 away from the hydraulic cylinder 11, and an abutment arc plate 25 is slidably installed on the outer side of the mounting frame 1.

[0022] In this technical solution (through Figure 1 , Figure 2and Figure 3 As shown), each hollow tube 2 has a bidirectional lead screw 21 vertically rotatably mounted inside via bearings. A servo motor 27 is fixedly mounted on the top of the outer side of the hollow tube 2, and the bottom of the transmission shaft of the servo motor 27 is fixedly connected to the top of the bidirectional lead screw 21 via a coupling. Lifting sleeves 22 are threadedly connected to both sides of the outer side of each bidirectional lead screw 21. Threads with opposite helical directions are provided on both sides of the outer side of the two sets of lifting sleeves 22. Threads that match the outer side of the outer side of the bidirectional lead screw 21 are provided on the inner side walls of both sets of lifting sleeves 22. A connecting rod 23 is fixedly mounted on the outer side of each lifting sleeve 22. A connecting rod 23 is fixedly mounted on the top of the side of each connecting rod 23. Sliding plates 24 are slidably mounted on both ends of the hollow tube 2 near the hydraulic cylinder 11, and the top of the side of the connecting rod 23 is fixedly connected to the outer side wall of the sliding plate 24. Limiting grooves 28 are vertically opened on both sides of the outer side of the hollow tube 2, and the connecting rod 23 is slidably inserted into the limiting groove 28.

[0023] In this technical solution (through Figure 1 , Figure 2 and Figure 3 As shown, each sliding plate 24 has a push rod 26 hinged to its outer side via a pivot, and the top edge of the push rod 26 is hinged to the outer wall of the abutting arc plate 25 via a pivot.

[0024] In this technical solution (through Figure 1 , Figure 2 and Figure 3 As shown), a guide slider 3 is fixedly installed at the bottom of the abutting arc plate 25, and a guide groove 31 is opened inside the top of the mounting bracket 1. The vertical cross-section of the guide groove 31 and the guide slider 3 are both inverted T-shaped, and the guide slider 3 is slidably inserted into the guide groove 31.

[0025] In some technical solutions (through Figure 1 , Figure 2 and Figure 3 As shown, a hydraulic cylinder 11 is fixedly installed on the side of the mounting bracket 1, and a bent push plate 12 is fixedly installed on the top of the piston rod side of the hydraulic cylinder 11.

[0026] During operation, when bending of the reinforcing bars is required, the servo motor 27 is activated via an external control switch, causing it to rotate synchronously within the hollow tube 2 along with the bidirectional lead screw 21. Combined with the guiding and limiting effect of the limiting groove 28 on the connecting rod 23, this causes the lifting sleeves 22 on both sides of the bidirectional lead screw 21 to move synchronously vertically towards or opposite each other. Adjusting the distance between the two sets of lifting sleeves 22 allows them to move synchronously towards each other vertically. Then, under the connecting transmission action of the connecting rod 23, the two sets of sliding plates 24 move synchronously towards each other vertically. Subsequently, the push rod 26... Under the action of the connecting transmission, the vertical moving force of the lifting sleeve 22 and the sliding plate 24 can be converted into a horizontal pushing force on the abutting arc plate 25. This adjusts the distance between the side end of the abutting arc plate 25 and the two ends of the side of the bending push plate 12, allowing the reinforcing bar to pass between the bending push plate 12 and the outer side of the abutting arc plate 25. After the two ends of the side of the bending push plate 12 and the middle of the outer side of the abutting arc plate 25 come into contact, the outer wall of the reinforcing bar is abutted and limited. The hydraulic cylinder 11 is activated to provide power to the bending push plate 12 to move horizontally. After the reinforcing bar is squeezed, the outer wall of the reinforcing bar is bent under the synchronous action of the bending push plate 12 and the abutting arc plate 25.

Claims

1. A portable reinforcing bar bender comprising a mounting frame (1) characterised in that: The mounting frame (1) side fixed installation has hydraulic cylinder (11), the hydraulic cylinder (11) piston rod side top fixed installation has the bending push plate (12), the mounting frame (1) top away from the side of hydraulic cylinder (11) fixed installation has hollow pipe (2); The mounting frame (1) outside slide installation has the resistance arc plate (25), the hollow pipe (2) outside is provided with conversion mechanism, and the conversion mechanism and the resistance arc plate (25) outside wall transmission connection, the hollow pipe (2) inside is provided with bidirectional drive mechanism, and the bidirectional drive mechanism and conversion mechanism transmission connection.

2. The portable rebar bender of claim 1, wherein: The bidirectional drive mechanism includes bidirectional screw rod (21), each hollow pipe (2) inside is vertically rotatable by bearing installation bidirectional screw rod (21), each bidirectional screw rod (21) outside both sides are movably sleeved with lifting sleeve (22) through thread.

3. The portable rebar bender of claim 2, wherein: Each lifting sleeve (22) outside is fixedly installed with connecting rod (23), each connecting rod (23) side top is fixedly installed with connecting rod (23), the hollow pipe (2) is close to the side of hydraulic cylinder (11) both ends are slide installation slide plate (24), and the connecting rod (23) side top and the slide plate (24) outside wall fixed connection.

4. The portable rebar bender of claim 3, wherein: The hollow pipe (2) outside top fixed installation has servo motor (27), and the servo motor (27) transmission shaft bottom individual coupling and bidirectional screw rod (21) top fixed connection, the hollow pipe (2) outside both sides are vertically provided with limiting sliding slot (28), and the connecting rod (23) is inserted into the limiting sliding slot (28) inside through sliding.

5. The portable rebar bender of claim 3, wherein: The conversion mechanism includes push rod (26), each slide plate (24) outside is inclined hinged with push rod (26) through shaft, and the push rod (26) side top is hinged with the resistance arc plate (25) outside wall through shaft.

6. The portable rebar bender of claim 1, wherein: The resistance arc plate (25) bottom fixed installation has guide sliding block (3), the mounting frame (1) top inside is provided with guide sliding slot (31).

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