Steel bar shearing machine

Abstract

The utility model belongs to the technical field of steel bar cut-off machines, and particularly relates to a steel bar cut-off machine. Comprising a cut-off machine body, a conveying assembly is arranged on the cut-off machine body, the conveying assembly comprises two mounting plates, mounting grooves are formed in the two mounting plates, a threaded rod is rotationally connected into one mounting groove, the threaded rod is sleeved with an adjusting nut, and the top of the threaded rod is connected with a first motor; a sliding rod is fixed in the other mounting groove, a sliding sleeve is sleeved on the sliding rod, and connecting sleeves are arranged on the sliding sleeve and the adjusting nut; two conveying wheels are arranged between the two mounting plates, two connecting rods are arranged on each of the two conveying wheels, and one connecting rod on one conveying wheel is connected with a second motor; the two connecting rods on the other conveying wheel are both installed in the connecting sleeves in a penetrating mode, and the end of one connecting rod is connected with a third motor. The steel bar conveying device can continuously convey steel bars to the cut-off machine, constructors do not need to lift the steel bars to move, and the working intensity of the constructors is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of rebar cutting machines, and in particular relates to a rebar cutting machine. Background Technology

[0002] In construction engineering, the precise cutting of steel bars is a key process in the processing of precast components and the fabrication of steel structures. Steel bars are cut using a steel bar cutting machine. However, when cutting steel bars, there are often requirements for the length of each section of steel bar after cutting. Measurement is required every time the steel bars are cut, which is a relatively cumbersome operation, resulting in reduced work efficiency. In addition, the required precision is relatively high.

[0003] Current existing technology, such as patent application number "CN202421629881.9" entitled "A Rebar Cutting Machine," includes a worktable with a support frame at its lower end, a cutting groove in the middle of the worktable, a sliding groove embedded in the left side of the worktable, a clamping and fixing mechanism slidably connected to the inner wall of the sliding groove, a mounting plate fixedly connected to the upper end of the worktable, a cylinder fixedly connected to the upper end of the mounting plate, and a cutting component fixedly connected to the telescopic end of the cylinder. By setting up the clamping and fixing mechanism, the equipment can cut the steel... The reinforcing bars are not easily rolled, providing good fixation. The fixing position can be adjusted according to different lengths of reinforcing bars, making the fixation more stable and improving the practicality of the device, making it suitable for widespread use. The positioning mechanism allows the equipment to adjust the length of the reinforcing bar cut each time. The structure is simple; simply place one end of the reinforcing bar against the positioning plate. No measurement is needed each time, making operation convenient and improving work efficiency. However, when cutting longer reinforcing bars, construction workers need to constantly lift and push them, increasing labor intensity and reducing work efficiency, thus lowering its practicality. Utility Model Content

[0004] The purpose of this invention is to provide a rebar cutting machine that continuously feeds rebar into the cutting machine.

[0005] The rebar cutting machine includes a cutting machine body. A conveying assembly for continuously conveying rebar is installed on the worktable of the cutting machine body. The conveying assembly includes two mounting plates fixed to the worktable of the cutting machine body and located outside the clamping and fixing mechanism. Each mounting plate has a mounting groove on its corresponding surface. A threaded rod is rotatably connected to one mounting groove, and an adjusting nut with a threaded fit is fitted onto the threaded rod. The top of the threaded rod protrudes from the mounting plate and connects to a first motor. A sliding rod is fixed to the other mounting groove, and a sliding sleeve with a sliding fit is independently fitted onto the sliding rod. Connecting sleeves are provided on the side walls of both the sliding sleeve and the adjusting nut. Two vertically distributed conveying wheels are arranged between the two mounting plates. Two connecting rods symmetrically arranged on each conveying wheel are rotatably connected to the mounting plates. One connecting rod on one conveying wheel passes through the mounting plate and connects to a second motor. The two connecting rods on the other conveying wheel are both fitted into connecting sleeves and rotatably connected to them. The end of one connecting rod protrudes from the mounting groove and connects to a third motor.

[0006] Furthermore, the workbench of the cutting machine body is provided with two support plates located outside the mounting plate. The top of each support plate is provided with a U-shaped fixing frame, and a rotating roller that contacts the reinforcing bar is rotatably connected inside the fixing frame.

[0007] Furthermore, a collection basket fixed on a support frame is provided below the workbench of the cutting machine body, and a fixing groove for the reinforcing bars to fall into the collection basket is provided on the workbench above the collection basket.

[0008] Furthermore, a buffer plate is provided inside the collection basket, and several springs are provided on the buffer plate and at the bottom of the collection basket.

[0009] Furthermore, a doorway is provided on one side of the collection basket, and a guide plate is hinged to the doorway. The guide plate is connected to the collection basket via a buckle.

[0010] Furthermore, a buffer layer is provided on the top of the collection basket.

[0011] Furthermore, the surface of the conveyor wheel is provided with a groove in an annular structure.

[0012] Furthermore, the side wall of the adjusting nut is provided with a slider, and the inner wall of the mounting groove is provided with a sliding groove that slides up and down with the slider.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention uses a conveying component to move the reinforcing bar towards the cutting part and positioning mechanism of the cutting machine body. After the cutting part cuts the reinforcing bar, the reinforcing bar is continuously cut and fed to the cutting machine through the continuous conveying of the conveying component. This eliminates the need for construction personnel to lift and move the reinforcing bar, reducing the workload of construction personnel and improving the cutting efficiency of longer reinforcing bars. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of AA;

[0017] Figure 3 This is a perspective view of the present utility model;

[0018] Figure 4 for Figure 3 Schematic diagram of the conveyor assembly structure;

[0019] Figure 5 for Figure 4 Schematic diagram of the internal structure of the conveyor assembly;

[0020] The components in the diagram are as follows: 1. Cutting machine body; 2. Mounting plate; 3. Conveyor wheel; 4. Slide rod; 5. Slide sleeve; 6. Rotating roller; 7. Fixing frame; 8. Support plate; 9. Collection basket; 10. Buffer plate; 11. Spring; 12. Guide plate; 13. First motor; 14. Threaded rod; 15. Adjusting nut; 16. Sliding block; 17. Connecting sleeve; 18. Second motor; 19. Connecting rod; 20. Third motor. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0022] Example

[0023] The rebar cutting machine described in this embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the device includes a cutting machine body 1. A conveying assembly for continuously conveying reinforcing bars is installed on the worktable of the cutting machine body 1. The conveying assembly includes two mounting plates 2 fixed to the worktable of the cutting machine body 1 and located outside the clamping and fixing mechanism. Each mounting plate 2 has a mounting groove on its corresponding surface. A threaded rod 14 is rotatably connected in one mounting groove, and an adjusting nut 15 with a threaded fit is fitted onto the threaded rod 14. The top of the threaded rod 14 protrudes from the mounting plate 2 and connects to the first motor 13. A sliding rod 4 is fixed in the other mounting groove, and an independently fitted sliding rod 4... There is a sliding sleeve 5 that slides up and down with it. Both the sliding sleeve 5 and the adjusting nut 15 are provided with connecting sleeves 17 on their side walls. There are two conveying wheels 3 that are distributed up and down between the two mounting plates 2. Two connecting rods 19 that are symmetrically arranged on the two conveying wheels 3 and rotatably connected to the mounting plate 2 are provided. One connecting rod 19 on one of the conveying wheels 3 passes through the mounting plate 2 and is connected to the second motor 18. The two connecting rods 19 on the other conveying wheel 3 are both installed in the connecting sleeve 17 and rotatably connected to it. The end of one of the connecting rods 19 passes through the mounting groove and is connected to the third motor 20.

[0024] The cutting machine body 1 in this embodiment is prior art. The cutting machine body 1 includes a worktable, a support frame at the lower end of the worktable, a cutting groove in the middle of the worktable, a sliding groove embedded in the left side of the worktable, a clamping and fixing mechanism slidably connected to the inner wall of the sliding groove, a mounting plate fixedly connected to the upper end of the worktable, a cylinder fixedly connected to the upper end of the mounting plate, and a cutting component fixedly connected to the telescopic end of the cylinder. In use, the clamping and fixing mechanism prevents the rebar from rolling, providing a good fixing effect. The fixing position can be adjusted according to rebars of different lengths, making the fixing more stable and improving the practicality of the device, making it suitable for widespread use. The positioning mechanism allows the device to adjust the length of the rebar cut each time. The structure is simple; only one end of the rebar needs to be pressed against the positioning plate, eliminating the need for measurement each time, making operation convenient and improving work efficiency. This embodiment is an improvement on the cutting machine body 1, which is used as prior art.

[0025] A conveying assembly is provided on the worktable of the cutting machine body 1. The conveying assembly includes two mounting plates 2 welded or glued to the worktable. The two mounting plates 2 are located on the left side of the clamping and fixing mechanism and are distributed front and back. Mounting grooves are provided on the corresponding surfaces of the two mounting plates 2. The rear side wall of the front mounting plate 2 is provided with a mounting groove, and the front side wall of the rear mounting plate 2 is provided with a mounting groove. A threaded rod 14 is rotatably connected in the front mounting groove through a first bearing. A first countersunk hole is provided at the top and bottom of the front mounting groove. Each is equipped with a first bearing. The outer ring of the first bearing is welded into the first countersunk hole. The inner ring of the first countersunk hole is welded with the end of the threaded rod 14. The threaded rod 14 is allowed to rotate freely in the mounting groove through the first bearing. An adjusting nut 15 with a threaded fit is fitted on the threaded rod 14. A mounting hole communicating with the mounting groove is opened on the top of the front mounting plate 2 corresponding to the threaded rod 14. A first motor 13 is installed on the top of the mounting plate 2. A fixing rod extending into the mounting hole and connected to the top of the threaded rod 14 is fixed on the output shaft of the first motor 13.

[0026] A vertical sliding rod 4 is welded or glued into the mounting groove on the rear side. A sliding sleeve 5 is independently fitted onto the sliding rod 4. Connecting sleeves 17 are welded or glued to the side walls of the sliding sleeves 5 and the adjusting nut 15. Connecting rods 19 are installed inside both connecting sleeves 17. Connecting rods 19 are welded or glued to the front and rear side walls of the two conveying wheels 3. The connecting rods 19 are rotatably connected to the connecting sleeves 17 through the second bearing, allowing the upper conveying wheel 3 to rotate freely within the two connecting sleeves 17. A through groove is opened on the front side wall of the mounting groove on the front side, and the connecting rods inside the connecting sleeves 17... After extending out of the through slot, 19 connects to the third motor 20; the two connecting rods 19 on the lower conveyor wheel 3 are rotatably connected to the mounting plate 2 through the third bearing, and the end of one of the connecting rods 19 passes through the mounting plate 2 and connects to the second motor 18; several freely rolling balls are provided on the top of the fixed seat and the bottom of the pressure block of the clamping and fixing mechanism of the cutting machine body 1. The steel bar moves more smoothly and stably towards the cutting part and positioning mechanism of the cutting machine body 1 by passing through the balls provided on the top of the fixed seat and the bottom of the pressure block.

[0027] like Figure 1 , Figure 3 and Figure 4As shown, the worktable of the cutting machine body 1 is provided with two support plates 8 located outside the mounting plate 2. Each support plate 8 has a U-shaped fixing frame 7 mounted at an incline on its top. A rotating roller 6, in contact with the reinforcing bar, is rotatably connected to each fixing frame 7. Two support plates 8, distributed front to back, are welded or adhered to the top of the worktable of the cutting machine body 1. These two support plates 8 are located on the left side of the mounting plate 2. An inclined fixing frame 7 is welded or adhered to the top of each support plate 8. The fixing frame 7 is rotatably connected to a rotating roller 6 via a fourth bearing. The rotating roller 6 is also inclined, located below and in contact with the reinforcing bar, and the two rotating rollers 6 are symmetrically distributed. The rotating roller 6 forms a "V" shape, which constrains the reinforcing bar through the angle formed by the inclined surfaces on both sides, ensuring that its axis is always kept at the center of the two rotating rollers 6. This effectively prevents the reinforcing bar from shifting laterally during transportation. The rotating roller 6 forms a linear contact with the reinforcing bar, which reduces frictional resistance compared to planar support, ensuring that the reinforcing bar moves smoothly along the preset direction. The "V" shape decomposes the weight of the reinforcing bar into vertical pressure and lateral force, reducing contact pressure and avoiding indentations or deformation on the surface of the reinforcing bar. The torque balance effect generated by the symmetrical arrangement of the two rotating rollers 6 can suppress the self-rotation of irregular profiles such as threaded steel bars, significantly improving the transportation stability and making it suitable for transporting reinforcing bars of different diameters.

[0028] like Figure 1 , Figure 2 and Figure 3 As shown, a collection basket 9 fixed on a support frame is provided below the workbench of the cutting machine body 1. A fixing groove for the steel bars to fall into the collection basket 9 is provided on the workbench above the collection basket 9. The collection basket 9 is provided below the workbench of the cutting machine body 1 and is welded or glued to four support frames. A fixing groove is provided on the workbench at the cutting part and the positioning mechanism of the cutting machine body 1. When the steel bars are conveyed to the positioning component by the conveying component, the cutting part is used to cut the steel bars. The cut steel bars fall into the collection basket 9 through the fixing groove for collection.

[0029] Furthermore, a buffer plate 10 is installed inside the collection basket 9, and several springs 11 are installed on the buffer plate 10 and the bottom of the collection basket 9.

[0030] A buffer plate 10 is installed inside the collection basket 9. Several springs 11 are installed between the buffer plate 10 and the collection basket 9. One end of each spring 11 is welded to the bottom of the buffer plate 10, and the other end is welded to the bottom of the collection basket 9. A limiting groove is opened on the inner wall of the collection basket 9. A limiting block is installed in the limiting groove, which slides vertically and is fixed to the side wall of the collection basket 9. When the steel bar falls onto the buffer plate 10, under the action of the weight of the steel bar and gravity, the springs 11 are compressed and deformed, and then return to their original shape under their elastic force. The buffer plate 10 moves downward and then upward again. The movement of the buffer plate 10 causes the limiting block to move within the limiting groove. The system acts as a buffer against falling steel bars. The limiting block and limiting groove work together to prevent the buffer plate 10 from detaching from the collection basket 9, ensuring its buffering effect. A buffer layer is provided on the top of the collection basket 9. The buffer layer includes microporous polyurethane foam, which is adhered to the top of the buffer plate 10. The microporous structure of the microporous polyurethane foam can absorb the impact force of falling steel bars through the deformation of the foam cells, significantly reducing the instantaneous impact force when the steel bars fall. The material damping characteristics reduce the subsequent vibration amplitude and prevent the steel bars from bouncing again. Ultra-high molecular weight polyethylene is adhered to the top of the microporous polyurethane foam. Its high elastic modulus can disperse local contact stress and ensure the safety of falling steel bars.

[0031] Furthermore, a doorway is provided on one side of the collection basket 9, and a guide plate 12 is hinged to the doorway. The guide plate 12 is connected to the collection basket 9 by a buckle. The guide plate 12 is hinged to the doorway of the collection basket 9 by a hinge. The guide plate 12 is inclined to the ground. The guide plate 12 facilitates the construction workers to take out the steel bars in the collection basket 9. The guide plate 12 is fixed to the collection basket 9 by the buckle, so that the collection basket 9 can collect the cut steel bars.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the surface of the conveying wheel 3 is provided with a groove in an annular structure; the groove on the surface of the conveying wheel 3 limits the position of the reinforcing bar to prevent it from shifting significantly during the conveying process and ensures that the reinforcing bar moves smoothly.

[0033] like Figure 2 and Figure 5 As shown, the adjusting nut 15 is provided with a slider 16 on its side wall, and the inner wall of the mounting groove is provided with a sliding groove that slides up and down with the slider 16; the adjusting nut 15 is welded or glued with the slider 16, and the sliding groove in the inner wall of the mounting groove slides up and down with the slider 16. When the slider 16 slides with the sliding groove, the adjusting nut 15 moves more smoothly and steadily on the threaded rod 14.

[0034] In actual use, construction workers place the reinforcing bars on the lower conveying wheel 3, which is located on the fixed seat of the clamping and fixing mechanism. The clamping and fixing mechanism holds the reinforcing bars in place to a certain extent. Then, the first motor 13 is started, and its output shaft drives the threaded rod 14 to rotate in the front mounting groove. This causes the adjusting nut 15, which is threaded to it, to move up and down on the threaded rod 14. With the sliding cooperation of the sliding rod 4 and the sliding sleeve 5, the upper conveying wheel 3 is driven to move down and contact and press against the reinforcing bar, which can accommodate reinforcing bars of different sizes. Then, the second motor 18 and the third motor 20 are started, and their output shafts drive the connecting rod 19 to rotate. The connecting rod 19 drives the conveying wheel 3 to rotate between the two mounting plates 2, driving the reinforcing bar to move towards the cutting part and positioning mechanism of the cutting machine body 1. The length of the reinforcing bar is fixed by the positioning mechanism. The cutting part cuts the reinforcing bar. After cutting, the reinforcing bar continues to move forward in the rolling conveying of the two conveying wheels 3. Construction workers do not need to lift the reinforcing bar to move it, which reduces the labor intensity of construction workers and improves the cutting efficiency of longer reinforcing bars.

Claims

1. A rebar cutting machine, comprising a cutting machine body (1), wherein a conveying assembly for continuously conveying rebar is provided on the worktable of the cutting machine body (1), characterized in that: The conveying assembly includes two mounting plates (2) fixed on the worktable of the cutting machine body (1) and located outside the clamping and fixing mechanism. The corresponding surfaces of the two mounting plates (2) are provided with mounting grooves. A threaded rod (14) is rotatably connected in one mounting groove. An adjusting nut (15) with a threaded engagement is fitted on the threaded rod (14). The top of the threaded rod (14) protrudes from the mounting plate (2) and is connected to the first motor (13). A sliding rod (4) is fixed in the other mounting groove. A sliding sleeve (5) with a sliding engagement is independently fitted on the sliding rod (4). The sliding sleeve (5) and the adjusting nut are connected to the sliding rod (14). A connecting sleeve (17) is provided on the side wall of the mother (15); two conveyor wheels (3) are arranged vertically between the two mounting plates (2), and two connecting rods (19) are symmetrically arranged on the two conveyor wheels (3) and rotatably connected to the mounting plate (2). One connecting rod (19) on one of the conveyor wheels (3) passes through the mounting plate (2) and is connected to the second motor (18); the two connecting rods (19) on the other conveyor wheel (3) are both installed in the connecting sleeve (17) and rotatably connected to it, and the end of one of the connecting rods (19) passes through the mounting groove and is connected to the third motor (20).

2. The rebar cutting machine according to claim 1, characterized in that: The cutting machine body (1) has two support plates (8) located on the outside of the mounting plate (2) on the worktable. The top of each support plate (8) is inclined with a fixed frame (7) in the shape of a "U". The fixed frame (7) is rotatably connected to a rotating roller (6) that contacts the reinforcing bar.

3. The rebar cutting machine according to claim 1, characterized in that: The cutting machine body (1) has a collection basket (9) fixed on a support frame below the workbench, and a fixing groove for the steel bars to fall into the collection basket (9) is provided on the workbench above the collection basket (9).

4. The rebar cutting machine according to claim 3, characterized in that: The collection basket (9) is provided with a buffer plate (10), and several springs (11) are provided at the bottom of the buffer plate (10) and the collection basket (9).

5. The rebar cutting machine according to claim 3, characterized in that: The collection basket (9) has a door opening on one side, and a guide plate (12) is hinged at the door opening. The guide plate (12) is connected to the collection basket (9) by a buckle.

6. The rebar cutting machine according to claim 3, characterized in that: The top of the collection basket (9) is provided with a buffer layer.

7. The rebar cutting machine according to claim 1, characterized in that: The surface of the conveyor wheel (3) is provided with a groove in the shape of an annular structure.

8. The rebar cutting machine according to claim 1, characterized in that: The adjusting nut (15) has a slider (16) on its side wall, and the inner wall of the mounting groove has a sliding groove that slides up and down with the slider (16).

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