Steel bar bending device

Abstract

The utility model discloses a reinforcing steel bar bending device which comprises a bottom plate, a placing seat used for placing a reinforcing steel bar body is fixedly arranged at one end of the bottom plate, an L-shaped arm is fixedly arranged at the other end of the bottom plate, and a limiting arm used for limiting the reinforcing steel bar body is arranged on the placing seat. The bending unit comprises an air cylinder arranged at the top of the L-shaped arm and a pressing piece arranged at the output end of the air cylinder, and the pressing piece is driven by the air cylinder to press the end of the steel bar body; the limiting unit is adjustably arranged on the L-shaped arm, located at the end of the steel bar body and used for limiting the extending amount of the end of the steel bar body; under the cooperation of the placing seat and the L-shaped arm, a plurality of steel bars can be horizontally placed between the placing seat and the L-shaped arm, and the bending of the plurality of steel bars at one time is realized; and meanwhile, due to the fact that the steel bars are bent under the same condition, the bending angle parameters are high in consistency, and the product quality is more stable.

Description

Technical Field

[0001] This utility model relates to the field of steel bar bending technology, and specifically to a steel bar bending device. Background Technology

[0002] During the construction process, steel bars, as the main building material, often need to be bent and processed according to the engineering design requirements.

[0003] For example, CN210450713U discloses a rebar bending machine, which includes a worktable, a rotating disk rotatably connected to the top of the worktable and driven to rotate by a motor in the worktable, a column fixedly connected to the middle of the rotating disk, a clamping block set on the worktable on one side of the rotating disk, a push rod set near the outer periphery of the rotating disk and rotating with the rotating disk, a horizontally set pressure plate set on the side of the clamping block near the column, guide tubes fixedly connected to both sides of the top of the column and both sides of the top of the push rod, and a pressure rod set in the two guide tubes at the top of the column. The pressure plate on the clamping block and the pressure rods on the column and push rod limit the rebar, making it less likely for the rebar to bounce off the rotating disk during the bending process, thereby reducing the risk of injury to the operator.

[0004] However, the problem of only being able to bend one steel bar at a time leads to low work efficiency and high manpower and time costs when dealing with a large number of steel bar bending tasks. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a rebar bending device to solve the problem that most existing rebar bending devices can only bend one rebar at a time, which affects the efficiency of rebar bending.

[0006] According to an embodiment of the present invention, a rebar bending device includes a base plate, a placement seat for placing a rebar body is fixedly disposed at one end, and an L-shaped arm is fixedly disposed at the other end. A limiting arm for restricting the rebar body is disposed on the placement seat. A bending unit includes a cylinder disposed at the top of the L-shaped arm and a pressing member disposed at the output end of the cylinder. The pressing member presses the end of the rebar body under the drive of the cylinder. A limiting unit is adjustablely disposed on the L-shaped arm and located at the end of the rebar body to limit the amount of extension of the end of the rebar body.

[0007] Compared with the prior art, this utility model has the following advantages: With the cooperation of the placement seat and the L-shaped arm, multiple steel bars can be horizontally placed between the placement seat and the L-shaped arm to achieve bending of multiple steel bars at one time; the limiting arm can initially position multiple steel bars, and then align multiple steel bars with the limiting unit so that the length of one end of the steel bars in the same batch extending out of the placement seat is consistent. Then the driving cylinder starts to work, and the pressing part at its output end moves vertically downward under the drive of the cylinder to press down and bend multiple steel bars. At the same time, since each steel bar is bent under the same conditions, the bending angle parameters are highly consistent, and the product quality is more stable.

[0008] Preferably, the pressing component includes: a mounting base connected to the cylinder output end; and a movable base hinged to the mounting base, with two pressing shafts symmetrically arranged on the side of the movable base away from the hinge point.

[0009] Preferably, each pressure shaft is rotatably equipped with a rotating roller.

[0010] Preferably, the mounting base is provided with two limiting shafts mirrored on both sides of the cylinder, and both limiting shafts are slidably disposed at the end of the L-shaped arm.

[0011] Preferably, the limiting unit includes a screw threadedly connected to the L-shaped arm, a limiting plate rotatably provided at one end of the screw near the placement seat, a limiting strip fixedly provided on the limiting plate, and the limiting strip slidably provided on the L-shaped arm.

[0012] Preferably, the limiting strip is provided with scale lines. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model.

[0014] Figure 2 This is an exploded structural diagram of an embodiment of the present invention.

[0015] Figure 3 This is an exploded structural diagram of the bending unit in an embodiment of this utility model.

[0016] The reference numerals in the accompanying drawings of the instruction manual include: 1. Base plate; 100. Reinforcing bar body; 101. Placement seat; 102. L-shaped arm; 103. Limiting arm; 2. Cylinder; 201. Limiting shaft; 202. Mounting seat; 3. Limiting plate; 301. Limiting strip; 302. Scale line; 303. Screw; 4. Movable seat; 401. Pressure shaft; 402. Rotating roller. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0018] like Figures 1 to 3As shown in the figure, this utility model embodiment proposes a rebar bending device, which includes a base plate 1, a placement seat 101 for placing a rebar body 100 fixedly disposed at one end, and an L-shaped arm 102 fixedly disposed at the other end. A limiting arm 103 for limiting the rebar body 100 is disposed on the placement seat 101; a bending unit, including a cylinder 2 disposed at the top of the L-shaped arm 102, and a pressing member disposed at the output end of the cylinder 2, the pressing member pressing the end of the rebar body 100 under the drive of the cylinder 2; and a limiting unit, adjustablely disposed on the L-shaped arm 102 and located at the end of the rebar body 100, for limiting the amount of extension of the end of the rebar body 100.

[0019] The detailed working process of this embodiment is as follows: the gap between the placement seat 101 and the L-shaped arm 102 is consistent with the diameter of the bent steel bar, so as to ensure the stability of multiple steel bars between the placement seat 101 and the L-shaped arm 102.

[0020] With the cooperation of the placement seat 101 and the L-shaped arm 102, multiple steel bars can be horizontally placed between the placement seat 101 and the L-shaped arm 102. The limiting arm 103 can initially position the multiple steel bars, and then align the multiple steel bars with the limiting unit so that the length of one end of the steel bars in the same batch extending out of the placement seat 101 is consistent. Then, the cylinder 2 is driven to work, and the pressing part at its output end moves vertically downward under the drive of the cylinder 2 to press down and bend the multiple steel bars.

[0021] like Figure 3 As shown, the pressing component includes: a mounting base 202, which is connected to the output end of the cylinder 2; and a movable base 4, which is hinged to the mounting base 202. Two pressing shafts 401 are symmetrically arranged on the side of the movable base 4 away from the hinge point.

[0022] The detailed working process of this embodiment is as follows: The mounting base 202 is directly connected to the output end of the cylinder 2, serving as the connection hub between the entire pressing component and the power source, ensuring that the power generated by the cylinder 2 can be stably transmitted to the pressing component. The movable base 4 and the mounting base 202 are hinged, providing great flexibility to the movable base 4, ensuring that the movable base 4 rotates when pressed down so that the two pressing shafts 401 can fit against the reinforcing bar. At the same time, the two pressing shafts 401 symmetrically arranged on the movable base 4 can increase the contact area with the reinforcing bar and improve the stability when pressing down.

[0023] like Figure 3 As shown, each pressure shaft 401 is rotatably equipped with a rotating roller 402.

[0024] The detailed working process of this embodiment is as follows: When the pressure shaft 401 presses down, it directly contacts the reinforcing bar. During the bending process, due to the deformation of the reinforcing bar, a large frictional force is generated. With the setting of the rotating roller 402, the sliding friction is transformed into rolling friction. When the cylinder 2 drives the pressing component to press down on the reinforcing bar for bending, the reinforcing bar deforms. The rotating roller 402 rolls down at the same time. The rolling friction coefficient is much smaller than the sliding friction coefficient. This greatly reduces the resistance of the reinforcing bar during the bending process, avoiding the leaving of indentations, scratches, or other marks on the surface of the reinforcing bar during the bending process. These marks not only affect the appearance of the reinforcing bar but may also reduce the performance of the reinforcing bar in the building structure.

[0025] like Figure 3 As shown, two limiting shafts 201 are mirror-mounted on the mounting base 202. The two limiting shafts 201 are located on both sides of the cylinder 2, and both limiting shafts 201 are slidably mounted at the end of the L-shaped arm 102.

[0026] The detailed working process of this embodiment is as follows: With the setting of the limiting shaft 201, when the mounting base 202 moves up and down under the drive of the cylinder 2, the limiting shafts 201 on both sides can evenly distribute the force borne by the mounting base 202, while providing stable guidance. The limiting shaft 201 can not only disperse the reaction force, but also ensure that the mounting base 202 still moves stably in the vertical direction under the action of these forces, avoiding the mounting base 202 tilting, shaking or even getting stuck due to uneven force, thereby ensuring that the rebar bending work can be carried out efficiently and stably.

[0027] like Figure 2 As shown, the limiting unit includes a screw 303 threadedly connected to the L-shaped arm 102. A limiting plate 3 is rotatably provided at one end of the screw 303 near the placement seat 101. A limiting strip 301 is fixedly provided on the limiting plate 3 and is slidably provided on the L-shaped arm 102.

[0028] The detailed working process of this embodiment is as follows: The screw 303 is threaded onto the L-shaped arm 102. This connection method gives the limiting plate 3 an adjustable characteristic. With the setting of the limiting strip 301, stability is provided for the movement of the limiting plate 3, so that rotating the screw 303 drives the limiting plate 3 to move closer to or away from the L-shaped arm 102. By rotating the screw 303, the relative position of the limiting plate 3 and the L-shaped arm 102 can be precisely adjusted, and the relative position of the limiting plate 3 and the L-shaped arm 102 is the length of the rebar that needs to be bent.

[0029] In practical applications, for a batch of 1-meter-long steel bars, it is necessary to bend them 20 centimeters from the end. The operator can move the limiting plate 3 to a position 20 centimeters from the edge of the placement seat 101, and then abut the end of the steel bar against the limiting plate 3. At this time, the distance of the steel bar extending from the placement seat 101 is 20 centimeters, and then the downward bending can be performed. This also provides a precise limiting reference for subsequent steel bar bending, ensuring that the front end of each steel bar is in the same position, and realizing the alignment of the steel bar ends before bending.

[0030] like Figure 2 As shown, the limit bar 301 is provided with scale lines 302.

[0031] The detailed working process of this embodiment is as follows: A scale line 302 is set on the limiting strip 301, providing a visual basis for the operator to accurately adjust the position of the limiting plate 3. Since the limiting strip 301 is fixedly connected to the limiting plate 3 and slides on the L-shaped arm 102, the scale line 302 can clearly show the positional change of the limiting plate 3 relative to the L-shaped arm 102, greatly improving the accuracy of adjustment and ensuring that the end position of each rebar before bending is strictly consistent.

[0032] The implementation principle of this application embodiment is as follows: First, the steel bars to be bent are placed between the placement seat 101 and the L-shaped arm 102 in sequence. At the same time, the limiting plate 3 is adjusted as needed. The steel bars on the placement seat 101 are then brought into contact with the limiting plate 3 to align them. Then, the cylinder 2 is controlled to drive the pressing component to press down the steel bars to bend them.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A reinforcing bar bending apparatus characterized by comprising: The utility model relates to a steel bar bending device, including: A bottom plate (1) is fixedly provided with a placing seat (101) for placing a steel bar body (100) at one end and an L-shaped arm (102) at the other end, the placing seat (101) is provided with a limiting arm (103) for limiting the steel bar body (100); A bending unit includes a pneumatic cylinder (2) arranged at the top of the L-shaped arm (102) and a pressing piece arranged at the output end of the pneumatic cylinder (2), the pressing piece presses the end of the steel bar body (100) under the drive of the pneumatic cylinder (2); A limiting unit is adjustably arranged on the L-shaped arm (102) and located at the end of the steel bar body (100) for limiting the extension amount of the end of the steel bar body (100).

2. A reinforcing bar bending apparatus according to claim 1, wherein The pressing piece includes: A mounting seat (202) connected with the output end of the pneumatic cylinder (2); An active seat (4) hinged with the mounting seat (202), two pressing shafts (401) symmetrically arranged on the side of the active seat (4) away from the hinge point.

3. A reinforcing bar bending apparatus as claimed in claim 2, wherein: A rotating roller (402) is rotatably arranged on each pressing shaft (401).

4. A reinforcing bar bending apparatus according to claim 2, wherein: Two limiting shafts (201) are mirror-symmetrically arranged on the mounting seat (202), the two limiting shafts (201) are respectively located on the two sides of the pneumatic cylinder (2), and the two limiting shafts (201) are slidingly arranged at the end of the L-shaped arm (102).

5. A reinforcing bar bending apparatus as claimed in claim 1, wherein: The limiting unit includes a screw rod (303) screw-connected on the L-shaped arm (102), a limiting plate (3) rotatably arranged at the end of the screw rod (303) close to the placing seat (101), a limiting strip (301) fixedly arranged on the limiting plate (3), and the limiting strip (301) slidingly arranged on the L-shaped arm (102).

6. A reinforcing bar bending apparatus as claimed in claim 5 wherein: The limiting strip (301) is provided with a scale line (302).

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