Reinforcing bar straightening, sizing and shearing unloading device

By adopting a support-pull type straightening and fixed-length shearing unloading mechanism in the rebar straightening device, the problems of high rebar wear, high energy consumption and low shearing efficiency are solved, realizing high-efficiency and low-consumption rebar processing.

CN224586865UActive Publication Date: 2026-08-04TJK MACHINERY (TIANJIN) CO LTD
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Patent Information

Application Number
CN202521662220.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-06
Publication Date
2026-08-04
Estimated Expiration
2035-08-06

AI Technical Summary

Technical Problem

The existing steel bar straightening process suffers from problems such as high wear, poor versatility, and high energy consumption, and also has low shearing efficiency.

Method used

A support-pull straightening mechanism is adopted. By setting straightening holes between the roller and the straightening seat, the compressive force on the steel bar is reduced. Combined with the fixed-length shearing of the unloading mechanism, the shearing efficiency is improved.

Benefits of technology

It reduces steel bar wear, lowers energy consumption, improves the versatility of the device, and enhances shearing efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model belongs to the field of rebar processing technology and discloses a rebar straightening, length-fixing, shearing, and unloading device. It includes a rebar straightening mechanism and an unloading mechanism. The rebar straightening mechanism includes a machine body, on which a straightening roller and a shearing assembly are mounted. The straightening roller includes a roller body with multiple straightening seats. Rollers are rotatably mounted on the straightening seats, and the rollers are obliquely positioned. Straightening holes are provided between the rollers and the straightening seats to allow rebar to pass through. Adjacent rollers face opposite directions and are adjustable relative to the roller body. The roller body can rotate relative to the machine body. The shearing assembly is located downstream of the straightening roller to cut the rebar. The unloading mechanism is located downstream of the rebar straightening mechanism and includes a frame and a length-fixing component. The length-fixing component moves along a first direction on the unloading mechanism to fix the length of the rebar. The first direction is perpendicular to a second direction, thus solving the problems of high wear, poor versatility, and high energy consumption in rebar straightening; it also solves the problem of low shearing efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of steel bar processing technology, and in particular to a steel bar straightening and length-fixing shearing and unloading device. Background Technology

[0002] Reinforcing bars are typically straightened and then cut to length to form reinforcing bar segments. In related technologies, after the reinforcing bars are straightened by a reinforcing bar straightening mechanism, the straightened reinforcing bars are transported to a shearing machine and cut to length manually. The cut reinforcing bars are then stacked in a designated location.

[0003] The aforementioned length setting and transportation of reinforcing bars all rely on manual handling, especially when cutting longer reinforcing bars, which is time-consuming and labor-intensive, and also affects production efficiency.

[0004] Meanwhile, existing rebar straightening mechanisms generally use a clamping block type straightening, which means that opposing clamping blocks work together to squeeze the rebar for straightening. This straightening method requires a large squeezing force, which can easily lead to excessive local stress and increase the wear of the rebar; it is also not suitable for thinner rebars and has poor versatility; in addition, a large squeezing force will also increase energy consumption. Utility Model Content

[0005] The purpose of this utility model is to provide a steel bar straightening and cutting unloading device, which can solve the problems of high wear, poor versatility and high energy consumption in steel bar straightening; and also solve the problem of low cutting efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A rebar straightening, cutting, and unloading device, comprising:

[0008] A rebar straightening mechanism includes a machine body, on which a straightening roller and a shearing assembly are mounted. The straightening roller includes a roller body extending along a first direction, and multiple straightening seats are spaced apart along the first direction on the roller body. Rollers are rotatably mounted on the straightening seats, and the rollers are obliquely positioned relative to the first direction. A straightening hole is provided between the rollers and the straightening seats to allow rebar to pass through. The orientations of two adjacent rollers are opposite, and they are adjustable along a second direction. The roller body is rotatable relative to the machine body.

[0009] The shearing assembly is located downstream of the straightening roller to cut the reinforcing bar;

[0010] The unloading mechanism is located downstream of the rebar straightening mechanism. The unloading mechanism includes a frame and a length-fixing component. The length-fixing component moves along the first direction on the unloading mechanism to fix the length of the rebar.

[0011] The first direction is perpendicular to the second direction.

[0012] In some embodiments, the roller body is provided with a frame shaft at both ends along the first direction, the frame shaft is provided with a through hole along the first direction, and the frame shaft rotates on the machine body.

[0013] In some embodiments, the roller body includes a front plate frame and a rear plate frame, the front plate frame being disposed opposite to the rear plate frame and fixed to the frame shaft, and one of two adjacent straightening seats being disposed on the front plate frame and the other being disposed on the rear plate frame.

[0014] In some embodiments, the straightening seat slides on the roller body along the second direction, the straightening seat is provided with an adjusting screw, the adjusting screw passes through the roller body, an adjusting nut is screwed onto the adjusting screw, the adjusting nut abuts against the roller body, and the adjusting nut and the roller are located on the inner and outer sides of the roller body.

[0015] In some embodiments, the shearing assembly includes a fixed cylinder, a movable blade, and a shearing drive, wherein the movable blade is connected to the output end of the shearing drive and has an arc-shaped shearing surface.

[0016] In some embodiments, the frame is provided with a moving rail extending along the first direction, the fixed-length component includes a car body, the car body is provided with moving wheels, the car body moves on the moving rail via the moving wheels, the car body is also provided with a locking drive, the output end of the locking drive is provided with two opposing locking blocks, the locking drive can drive the locking blocks to approach or move away from the moving rail, and the car body is provided with a top abutment to abut against the reinforcing steel.

[0017] In some embodiments, the frame is provided with a reinforcing tube extending along the first direction. The end of the reinforcing tube facing the shearing assembly is open. The upper and lower ends of the reinforcing tube are provided with a sliding port and a discharge port extending along the first direction. The discharge port is provided with a sealing plate that can be opened or closed. The abutment extends into the sliding port.

[0018] In some embodiments, a support plate is provided on the frame, and the support plate is located below the shearing assembly and the sizing member.

[0019] In some embodiments, the receiving plate includes a first plate and a second plate, one end of the second plate is connected to the first plate, and the other end of the second plate is inclined downward away from the first plate. The frame is provided with a conveying roller and a blocking plate. The first plate is provided with a first opening corresponding to the conveying roller. The conveying roller protrudes from the first opening and is capable of conveying the reinforcing bar to the second plate. The blocking plate is rotatably disposed on the frame. The second plate is provided with a second opening. The blocking plate can protrude above the second plate or retract below the second plate through the second opening.

[0020] In some embodiments, the rebar straightening and cutting unloading device further includes a wire feeding frame and a wire guiding frame, the wire feeding frame and the wire guiding frame being disposed upstream of the rebar straightening mechanism, and the wire guiding frame being disposed between the wire feeding frame and the rebar straightening mechanism.

[0021] The beneficial effects of this utility model are:

[0022] The unloading mechanism is connected downstream of the straightening mechanism. A fixed-length component moves along the frame, allowing the length of the reinforcing bar to be determined based on the distance the component travels. After the reinforcing bar is straightened by the straightening mechanism, it is conveyed along the first direction and abuts against the fixed-length component. The shearing assembly then cuts the reinforcing bar to improve efficiency. Furthermore, the straightening machine uses straightening holes positioned between the rollers and the straightening seat, transforming the traditional extrusion straightening process into a support-pull straightening process. The support-pull mechanism between adjacent rollers reduces the force applied to the reinforcing bar compared to mutual extrusion, thus reducing straightening wear and reducing the force exerted on the reinforcing bar. This also lowers the energy consumption during reinforcing bar conveying. Moreover, this support method is applicable to thinner reinforcing bars, enhancing its versatility. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the steel bar straightening and length-fixing shearing and unloading device of this utility model;

[0024] Figure 2 This is a schematic diagram showing the connection between the steel bar straightening mechanism and the unloading mechanism in this utility model;

[0025] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 yes Figure 2 Enlarged view at point B in the middle;

[0027] Figure 5 This is a schematic diagram of the straightening roller in this utility model.

[0028] Figure 6 This is a cross-sectional view of the straightening roller in this utility model;

[0029] Figure 7 This is a schematic diagram of the straightening roller displaying two adjacent rollers in this utility model;

[0030] Figure 8 This is a schematic diagram of the straightening seat and rollers in this utility model;

[0031] Figure 9 This is a partial schematic diagram of the shearing component in this utility model.

[0032] In the picture:

[0033] 1. Rebar straightening mechanism; 11. Machine body; 12. Straightening roller; 121. Roller body; 1211. Front plate frame; 1212. Rear plate frame; 1213. Side plate; 122. Straightening seat; 123. Roller; 124. Straightening hole; 125. Frame shaft; 1251. Through hole; 126. Adjusting screw; 127. Nut; 13. Shearing assembly; 131. Fixed cylinder; 132. Movable blade; 14. Support base; 15. Bearing; 16. Oil cup;

[0034] 2. Unloading mechanism; 21. Frame; 22. Fixed length component; 221. Car body; 222. Moving wheels; 223. Locking drive component; 224. Locking block; 23. Moving rail; 24. Through-rib pipe; 241. Sliding port; 25. Receiving plate; 251. First plate; 252. Second plate; 253. Third plate; 26. Conveyor roller; 27. First opening; 28. Baffle plate; 29. ​​Second opening;

[0035] 3. Cable feeder;

[0036] 4. Organize the outline. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0038] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0041] like Figures 1 to 9 As shown, this application provides a rebar straightening and cutting unloading device, which includes a rebar straightening mechanism 1 and an unloading mechanism 2. The rebar straightening mechanism 1 includes a body 11, on which a straightening roller 12 and a cutting assembly 13 are disposed. The straightening roller 12 includes components along a first direction (…). Figure 6 A roller body 121 extending in the X direction (in the first direction) has multiple straightening seats 122 spaced apart along the first direction. Rollers 123 are rotatably mounted on the straightening seats 122, and the rollers 123 are obliquely positioned relative to the first direction. Straightening holes 124 are provided between the rollers 123 and the straightening seats 122 to allow for the insertion of reinforcing bars. Adjacent rollers 123 face opposite directions and extend along the second direction (in the second direction). Figure 6 The Y-direction of the straightening roller 121 is adjustable; the roller 121 is rotatable relative to the machine body 11; the shearing assembly 13 is located downstream of the straightening roller 12 to cut the steel bar; the unloading mechanism 2 is located downstream of the steel bar straightening mechanism 1, and the unloading mechanism 2 includes a frame 21 and a length-fixing component 22, which moves along the first direction on the unloading mechanism 2 to fix the length of the steel bar; the first direction is perpendicular to the second direction.

[0042] The unloading mechanism 2 is connected downstream of the rebar straightening mechanism 1. The length of the rebar is determined by the distance the length of the length of the rebar is determined by the length of ...

[0043] Furthermore, the aforementioned rebar straightening mechanism 1 also employs a straightening hole 124 positioned between the roller 123 and the straightening seat 122, thereby changing the rebar straightening process from traditional extrusion straightening to support and pull straightening. The two adjacent rollers 123 support and pull the rebar, which reduces the force applied to the rebar compared to mutual extrusion, thus reducing straightening wear and reducing the force on the rebar. This also reduces the energy consumption generated during rebar conveying. Moreover, the support method is applicable to thinner rebars, improving versatility.

[0044] like Figure 1 As shown, in some embodiments, in order to straighten the reinforcing bars, the reinforcing bar straightening and cutting unloading device also includes a wire feeding frame 3 and a wire guiding frame 4. The wire guiding frame 4 and the wire feeding frame 3 are located upstream of the reinforcing bar straightening mechanism 1. In this application, upstream and downstream refer to the upstream and downstream of the reinforcing bars being conveyed along the first direction. It should be noted that the wire guiding frame 4 and the wire feeding frame 3 are commonly used devices in the prior art, and their specific structures will not be described in detail.

[0045] It should be noted here that the rebar straightening mechanism 1 may also include a rebar conveying assembly. The rebar conveying assembly may be a commonly used conveying assembly in the prior art, such as a pressing conveyor, and is not limited here.

[0046] like Figures 4 to 7 As shown, in some embodiments, the machine body 11 is provided with two opposing support seats 14, and bearings 15 are mounted on the support seats 14. The roller body 121 has support shafts 125 at both ends along a first direction, and the support shafts 125 have through holes 1251 along the first direction to allow reinforcing bars to pass through. The support shafts 125 are inserted into the bearings 15, and one of the support shafts 125 is also provided with a pulley, thereby connecting a drive motor to drive the roller body 121 to rotate, which is equivalent to the machine body 11. Furthermore, an oil cup 16 is also provided on the fixed seat to allow oil to be injected into the bearings 15 to keep them lubricated.

[0047] In the current embodiment, the roller body 121 includes a front plate frame 1211 and a rear plate frame 1212, which are arranged opposite to each other and are both fixed on two frame shafts 125. One of two adjacent straightening seats 122 is disposed on the front plate frame 1211 and the other is disposed on the rear plate frame 1212, so that the two adjacent rollers 123 face opposite directions. In addition, in order to enable the rollers 123 to move in a second direction, an adjusting screw 126 is connected to the straightening seat 122, and a nut 127 is screwed onto the adjusting screw 126, so that the rollers 123 and the nut 127 are located on the inner and outer sides of the roller body 121. The nut 127 abuts against the front plate frame 1211 or the rear plate frame 1212, so that the straightening seat 122 can be moved by rotating the nut 127. To prevent the straightening seat 122 from rotating, a pair of opposite side plates 1213 are provided between the front plate frame 1211 and the rear plate frame 1212. The straightening seat 122 is clamped between the two side plates 1213 and slides relative to the side plates 1213.

[0048] In the current embodiment, the angle between the axis of the roller 123 and the first direction is α, where α is 30°-40°, thus achieving both straightening effect and conveying capacity.

[0049] like Figure 9 As shown, in some embodiments, the shearing assembly 13 includes a fixed cylinder 131, a movable blade 132, and a shearing drive (not shown in the figure). The shearing drive and the fixed cylinder 131 are fixed to the machine body 11. The shearing drive can be, but is not limited to, a motor or a hydraulic cylinder. The fixed cylinder 131 is coaxially arranged with the support shaft 125 to facilitate the passage of the reinforcing bar. The movable blade 132 is connected to the output end of the shearing drive and is located at the end of the fixed cylinder 131 away from the straightening roller 12. The shearing drive can drive the movable blade 132 to move closer to or away from the fixed cylinder 131 radially, thereby cutting the reinforcing bar with the end protruding from the fixed cylinder 131. To facilitate cutting, accommodate round reinforcing bars, and improve the shearing effect, the movable blade 132 has an arc-shaped shearing surface. It is understood that the above-described shearing assembly 13 can also be other shearing tools in the prior art capable of cutting reinforcing bars.

[0050] like Figures 2 to 4As shown, in some embodiments, the frame 21 of the unloading mechanism 2 is located downstream of the rebar straightening mechanism 1. To reduce the possibility of movement between the two, the frame 21 and the machine body 11 can be fixedly connected. A moving rail 23 is fixed on the frame 21, and the moving rail 23 extends along a first direction. The fixed-length component 22 includes a car body 221, on which opposite moving wheels 222 are provided. The moving wheels 222 are clamped on the moving rail 23, thereby driving the moving wheels 222 to move on the moving rail 23 through a moving drive component connected to the moving rail 23. A stop is provided on the car body 221. When it is determined that a fixed length of rebar is required, the moving drive component drives the car body 221 to move on the moving rail 23, thereby causing the stop to move closer to or away from the shearing component 13, and the length of the rebar between the fixed-length shearing component 13 and the stop. After the length is fixed, the vehicle body 221 needs to be secured. In this embodiment, the vehicle body 221 is also equipped with a locking drive component 223. The output end of the locking drive component 223 is provided with two opposing locking blocks 224. The locking drive component 223 can drive the locking blocks 224 to clamp or move away from the moving rail 23, thereby securing the vehicle body 221. Exemplarily, the locking drive component 223 is a double-headed cylinder or hydraulic cylinder. It is understood that multiple sets of locking blocks 224 and moving wheels 222 can be provided.

[0051] To accommodate longer reinforcing bars and reduce the possibility of bending during length setting, a reinforcing bar threading tube 24 is provided on the frame 21. The threading tube 24 is located below the moving rail 23 and extends along a first direction. The upper and lower ends of the threading tube 24 are provided with a sliding opening 241 and a discharge port (not shown in the figure) extending along the first direction. The top of the length-setting component 22 extends into the sliding opening 241, allowing the reinforcing bar to pass through the threading tube 24 along the first direction. Upon contact with the top, the shearing component 13 cuts the reinforcing bar, which then falls from the discharge port onto the frame 21. The threading tube 24 can be a polygonal tube, such as a quadrilateral, hexagonal, or octagonal tube. To further reduce the possibility of the rebar falling out of the chute before cutting, a blocking drive is provided on the frame 21. The blocking drive is connected to a blocking plate, which is hinged to the frame 21. The blocking drive can drive the blocking plate to rotate, thereby opening or managing the chute. This allows the chute to be closed when cutting to a specified length and opened after cutting. For example, the blocking drive can be a motor.

[0052] In order to enable the top to sense the impact of the reinforcing bar, the middle part of the top is connected to the vehicle body 221. One end of the top extends into the sliding port 241, and the other end extends out of the sliding port 241 and abuts against the contact switch set on the vehicle body 221. Thus, the top can be rotated by the impact of the reinforcing bar, so that the top is either against or away from the contact switch. This is the prior art, and will not be described in detail.

[0053] In some embodiments, in order to better support the cut steel bars, a receiving plate 25 is provided on the frame 21. The receiving plate 25 is located below the shearing assembly 13 and the length-fixing member 22, specifically below the discharge port, so as to receive the steel bars falling from the discharge port.

[0054] Specifically, such as Figure 2 and Figure 4 As shown, the receiving plate 25 includes a first plate 251 and a second plate 252. The first plate 251 is horizontally arranged, and the second plate 252 is inclined. One end of the second plate 252 is connected to the first plate 251, and the other end of the second plate 252 is inclined downward away from the first plate 251. A conveying roller 26, which is a spiral conveying roller, is provided on the frame 21. The conveying roller 26 extends towards or away from the second plate 252 and is connected to the frame 21. The first plate 251 has a first opening 27 corresponding to the conveying roller 26, and the conveying roller 26 protrudes from the first opening 27, thereby enabling the conveying of reinforcing bars from the first plate 251 to the second plate 252. In this embodiment, multiple conveying rollers 26 are provided, and the multiple conveying rollers 26 are spaced apart along a first direction. Multiple conveying rollers 26 are divided into a first roller group and a second roller group along a first direction. The first roller group is closer to the rebar straightening mechanism 1. The distance between two adjacent conveying rollers 26 in the first roller group is smaller than the distance between two adjacent conveying rollers 26 in the second roller group. This allows the first roller group to be suitable for conveying shorter rebars, while longer rebars can be conveyed together by the first and second roller groups. Exemplarily, the multiple conveying rollers 26 can be synchronously connected and rotated via a rotating shaft.

[0055] The frame 21 is also equipped with multiple baffle plates 28, which are rotatably connected to the frame 21 at intervals along a first direction. A third plate 253 has a second opening 29 corresponding to each baffle plate 28. The baffle plates 28 are connected to the output end of a blocking drive component, which may, but is not limited to, a motor. The blocking drive component can drive the baffle plates 28 to extend or retract into the second opening 29, thereby blocking the reinforcing bars or allowing them to fall. In this embodiment, the multiple baffle plates 28 are divided into a first blocking group and a second blocking group in the first direction. The first blocking group is closer to the reinforcing bar straightening mechanism 1, and the interval between adjacent baffle plates 28 in the first blocking group is smaller than the interval between adjacent baffle plates 28 in the second blocking group. It is understood that the multiple baffle plates 28 can be connected by a rotating shaft for synchronous driving.

[0056] like Figure 2As shown, in some embodiments, the receiving plate 25 further includes a third plate 253, which is disposed on the side of the first plate 251 away from the second plate 252. One end of the third plate 253 is connected to the second plate 252, and the other end of the third plate 253 extends upward at an angle away from the second plate 252, so that the steel bars falling from the discharge port are received by the third plate 253, and the steel bars roll down the third plate 253 onto the second plate 252.

[0057] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A reinforcing bar straightening, sizing and shearing unloading device, characterized in that, include: A rebar straightening mechanism (1) includes a machine body (11), on which a straightening roller (12) and a shearing assembly (13) are provided. The straightening roller (12) includes a roller body (121) extending along a first direction. A plurality of straightening seats (122) are spaced apart along the first direction on the roller body (121). A roller (123) is rotatably provided on the straightening seat (122). The roller (123) is obliquely arranged relative to the first direction. A straightening hole (124) is provided between the roller (123) and the straightening seat (122) to allow rebar to be passed through. The orientations of two adjacent rollers (123) are opposite and adjustable along a second direction. The roller body (121) is rotatable relative to the machine body (11). The shearing assembly (13) is located downstream of the straightening roller (12) to cut the reinforcing bar; The unloading mechanism (2) is located downstream of the steel bar straightening mechanism (1). The unloading mechanism (2) includes a frame (21) and a length-fixing component (22). The length-fixing component (22) moves along the first direction on the unloading mechanism (2) to fix the length of the steel bar. The first direction is perpendicular to the second direction.

2. The reinforcing bar straightening, sizing and shearing unloading apparatus according to claim 1, characterized in that, The roller body (121) is provided with a frame shaft (125) at both ends along the first direction. The frame shaft (125) is provided with a through hole (1251) along the first direction. The frame shaft (125) rotates on the machine body (11).

3. The reinforcing bar straightening, sizing and shearing unloading apparatus according to claim 2, characterized in that, The roller body (121) includes a front plate frame (1211) and a rear plate frame (1212). The front plate frame (1211) is arranged opposite to the rear plate frame (1212) and is fixed on the frame shaft (125). One of the two adjacent straightening seats (122) is arranged on the front plate frame (1211) and the other is arranged on the rear plate frame (1212).

4. The reinforcing bar straightening, sizing and shearing unloading apparatus according to claim 3, characterized in that, The straightening seat (122) slides on the roller body (121) along the second direction. An adjusting screw (126) is provided on the straightening seat (122). The adjusting screw (126) passes through the roller body (121). An adjusting nut (127) is screwed onto the adjusting screw (126). The adjusting nut (127) abuts against the roller body (121). The adjusting nut (127) and the roller (123) are located on the inner and outer sides of the roller body (121).

5. The reinforcing bar straightening, sizing and shearing unloading apparatus according to any one of claims 1 to 4, characterized in that, The shearing assembly (13) includes a fixed cylinder (131), a movable blade (132), and a shearing drive. The movable blade (132) is connected to the output end of the shearing drive and has an arc shearing surface.

6. The reinforcing bar straightening, sizing and shearing unloading apparatus according to any one of claims 1 to 4, characterized in that, The frame (21) is provided with a moving rail (23) extending along the first direction. The fixed-length component (22) includes a car body (221). The car body (221) is provided with moving wheels (222). The car body (221) moves on the moving rail (23) via the moving wheels (222). The car body (221) is also provided with a locking drive component (223). The output end of the locking drive component (223) is provided with two opposing locking blocks (224). The locking drive component (223) can drive the locking blocks (224) to approach or move away from the moving rail (23). The car body (221) is provided with a top abutment to abut against the reinforcing bars.

7. The reinforcing bar straightening, sizing and shearing unloading apparatus according to claim 6, characterized in that, The frame (21) is provided with a through pipe (24), which extends along the first direction. The through pipe (24) has an opening at one end facing the shearing assembly (13). The upper and lower ends of the through pipe (24) are provided with a sliding port (241) and a material drop port extending along the first direction. The material drop port is provided with a sealing plate that can be opened or closed. The abutment extends into the sliding port (241).

8. The reinforcing bar straightening, sizing and shearing unloading apparatus according to any one of claims 1 to 4, characterized in that, The frame (21) is provided with a support plate (25), which is located below the shearing assembly (13) and the length-fixing component (22).

9. The reinforcing bar straightening, sizing and shearing unloading apparatus according to claim 8, characterized in that, The receiving plate (25) includes a first plate (251) and a second plate (252). One end of the second plate (252) is connected to the first plate (251), and the other end of the second plate (252) is inclined downward away from the first plate (251). The frame (21) is provided with a conveying roller (26) and a blocking plate (28). The first plate (251) is provided with a first opening (27) corresponding to the conveying roller (26). The conveying roller (26) protrudes from the first opening (27) and can convey the reinforcing bar to the second plate (252). The blocking plate (28) is rotatably disposed on the frame (21). The second plate (252) is provided with a second opening (29). The blocking plate (28) can protrude above the second plate (252) or retract below the second plate (252) through the second opening (29).

10. The reinforcing bar straightening, sizing and shearing unloading apparatus according to any one of claims 1 to 4, characterized in that, The rebar straightening and cutting unloading device also includes a wire feeding frame (3) and a wire straightening frame (4). The wire feeding frame (3) and the wire straightening frame (4) are located upstream of the rebar straightening mechanism (1), and the wire straightening frame (4) is located between the wire feeding frame (3) and the rebar straightening mechanism (1).