Automatic single steel bar penetrating device of steel bar framework seam welder

Abstract

The utility model discloses a single automatic reinforcement penetrating device of a reinforcement cage seam welder, which relates to the field of reinforcement penetrating machines and comprises a movable support and a feeding component. The feeding assembly is fixed to the movable support. The movable support can drive the feeding assembly to move in the horizontal direction and the vertical direction. The feeding assembly comprises a mounting frame, a clamping and conveying assembly and a posture adjusting assembly; the clamping and conveying assembly is fixed on the mounting frame; the clamping and conveying assembly can clamp and convey the reinforcing steel bars in the horizontal direction; the posture adjusting assembly comprises a pressing wheel; the pressing wheel is rotatably fixed on the mounting frame; the pressing wheel is arranged on the upper side in front of the steel bar conveying advancing direction of the clamping conveying assembly. According to the automatic single reinforcement penetrating device of the reinforcement cage seam welder, the problem that in the prior art, the head of a reinforcement is difficult to align with a circular hole of a reinforcement penetrating plate when upwarped is solved, and the situation that the head of the reinforcement is upwarped can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of rebar threading machines, and more particularly to a single automatic rebar threading device for a rebar cage welding machine. Background Technology

[0002] A rebar threading machine is a mechanical device used to thread steel bars and other rods into specific structures or components. In concrete structures, such as columnar or strip-shaped members, the rebar cage plays a crucial role, primarily providing tensile strength and enhancing the load-bearing capacity of the concrete member. During the manufacturing process of bored pile rebar cages and prestressed concrete pipe pile rebar cages, it is necessary to thread the round or threaded steel bars forming the longitudinal bars of the rebar cage into the round holes on the threading plate or auxiliary threading plate of the rebar cage welding machine for welding. This operation is typically performed by a rebar threading machine. Existing technology, such as the rebar threading machine disclosed in Chinese Patent Application No. 202222910589.1, describes the specific structure and working principle of the rebar threading machine.

[0003] The rebar threading machines described in the aforementioned comparative documents have significant drawbacks in practical applications. Due to the substantial weight and length of the rebars, the force-bearing point during the rebar threading machine's gripping and movement is relatively small. This makes it difficult to ensure that the rebar head remains horizontal during movement, causing the rebar head to easily tilt upwards. This tilting not only affects the accuracy of threading, preventing the rebar from being accurately aligned and inserted into the circular holes of the threading plate or auxiliary threading plate, but the tilted rebar head may also collide with other parts of the equipment, damaging the equipment, disrupting normal production, and increasing maintenance costs and downtime. Utility Model Content

[0004] To address the aforementioned technical problems, the automatic single-strand rebar threading device for the rebar cage welding machine provided by this utility model can reduce the occurrence of rebar head lifting.

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

[0006] The present invention provides an automatic single-strand rebar threading device for a rebar cage welding machine, comprising a movable support and a feeding assembly; the feeding assembly is fixed on the movable support; the movable support can drive the feeding assembly to move horizontally and vertically; the feeding assembly includes a mounting frame, a clamping and conveying assembly, and a posture adjustment assembly; the clamping and conveying assembly is fixed on the mounting frame; the clamping and conveying assembly can clamp and convey the rebar horizontally; the posture adjustment assembly includes a pressure roller; the pressure roller is rotatably fixed on the mounting frame; the rotation axis of the pressure roller is perpendicular to the conveying direction of the clamping and conveying assembly on the rebar; the pressure roller is located on the upper front side of the forward direction of the clamping and conveying assembly conveying the rebar.

[0007] The single-strand automatic rebar threading device for the rebar cage welding machine provided by this utility model preferably includes a support roller in the posture adjustment component; the support roller is rotatably fixed on the mounting frame; the rotation axis of the support roller is perpendicular to the conveying direction of the rebar by the clamping and conveying component; the support roller is located on the lower rear side of the forward direction of the rebar conveying by the clamping and conveying component.

[0008] The single-strand automatic rebar threading device of the rebar cage welding machine provided by this utility model preferably includes a clamping and conveying assembly comprising an active feeding roller, a driven feeding roller, and a feeding motor; the active feeding roller and the driven feeding roller are provided with annular grooves in the middle; the feeding motor is fixed on the mounting frame; the active feeding roller is drivenly connected to the feeding motor; the axis of the active feeding roller is vertical; the driven feeding roller is rotatably fixed on the mounting frame; the annular grooves of the active feeding roller and the driven feeding roller are aligned at the same height.

[0009] The single-strand automatic rebar threading device of the rebar cage welding machine provided by this utility model preferably includes a clamping and conveying assembly further comprising a pressing cylinder and a driven roller support; the pressing cylinder is fixed on the mounting frame; the telescopic shaft of the pressing cylinder is horizontal; the extension direction of the telescopic shaft of the pressing cylinder is perpendicular to the conveying direction of the clamping and conveying assembly to the rebar; the driven roller support is fixed on the telescopic shaft of the pressing cylinder; and the driven feeding roller is rotatably fixed on the driven roller support.

[0010] The automatic single-strand rebar threading device for the rebar cage welding machine provided by this utility model preferably includes a clamping and conveying assembly further comprising a second pressing cylinder, a second driven roller support, a first driven roller, and a second driven roller; the first driven roller and the second driven roller have annular grooves at their middle ends; the annular grooves at the middle ends of the first driven roller, the second driven roller, the active feeding roller, and the driven feeding roller are flush; the first driven roller is rotatably fixed on the mounting frame; the axis of the first driven roller is vertical; the second driven roller is rotatably fixed on the second driven roller support; the second driven roller support is fixed on the output shaft of the second pressing cylinder; the second pressing cylinder is fixed on the mounting frame; the output shaft of the second pressing cylinder is horizontal; in the conveying direction of the rebar by the clamping and conveying assembly, the first driven roller is located behind the active feeding roller, and the second driven roller is located behind the driven feeding roller.

[0011] The single-strand automatic rebar threading device for the rebar cage welding machine provided by this utility model preferably includes a roller drive cylinder and a roller bracket in the posture adjustment component; the roller drive cylinder is fixed on the mounting frame; the telescopic shaft of the roller drive cylinder is horizontal; the extension direction of the telescopic shaft of the roller drive cylinder is perpendicular to the conveying direction of the rebar by the clamping and conveying component; the roller bracket is fixed on the telescopic shaft of the roller drive cylinder; the roller is rotatably fixed on the roller bracket.

[0012] The above technical solution has the following advantages or beneficial effects:

[0013] This utility model discloses a single-strand automatic rebar threading device for a rebar cage welding machine, relating to the field of rebar threading machines. It includes a movable support and a feeding assembly; the feeding assembly is fixed on the movable support; the movable support can drive the feeding assembly to move horizontally and vertically; the feeding assembly includes a mounting frame, a clamping and conveying assembly, and a posture adjustment assembly; the clamping and conveying assembly is fixed on the mounting frame; the clamping and conveying assembly can clamp and convey the rebar horizontally; the posture adjustment assembly includes a pressure roller; the pressure roller is rotatably fixed on the mounting frame; the pressure roller is located on the upper front side of the clamping and conveying assembly in the forward direction of conveying the rebar. The single-strand automatic rebar threading device for a rebar cage welding machine provided by this utility model solves the problem in existing technologies where the rebar head is raised and difficult to align with the circular hole of the threading plate, thus reducing the occurrence of rebar head raising. Attached Figure Description

[0014] The present invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not intentionally drawn to scale; the focus is on illustrating the gist of the invention.

[0015] Figure 1 This is a schematic diagram of the overall structure of the single-strand automatic rebar threading device of the rebar cage welding machine provided in Embodiment 1 of this utility model.

[0016] Figure 2 This is a schematic diagram showing the positional relationship between the mounting frame, clamping and conveying components, and attitude adjustment components of the single-strand automatic rebar threading device of the rebar cage welding machine provided in Embodiment 1 of this utility model.

[0017] Figure 3 This is a schematic diagram showing the position of the pressing motor of the single-strand automatic rebar threading device of the rebar cage welding machine provided in Embodiment 1 of this utility model on the mounting frame.

[0018] Figure 4 This is a schematic diagram showing the positional relationship between the active feeding roller and the driven feeding roller of the single-strand automatic rebar threading device of the rebar cage welding machine provided in Embodiment 1 of this utility model. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. It should also be noted that the terminology used in this utility model is for describing specific implementations only and is not intended to limit the exemplary implementations according to this application.

[0020] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without inventive effort are within the protection scope of the present utility model.

[0021] Example 1:

[0022] The single-strand automatic rebar threading device for the rebar cage welding machine provided in Embodiment 1 of this utility model, such as Figures 1 to 4 As shown, it includes a movable support 1 and a feeding assembly 2; the feeding assembly 2 is fixed on the movable support 1; the movable support 1 can drive the feeding assembly 2 to move horizontally and vertically; the feeding assembly 2 includes a mounting frame 21, a clamping and conveying assembly 22 and an attitude adjustment assembly 23; the clamping and conveying assembly 22 is fixed on the mounting frame 21; the clamping and conveying assembly 22 can clamp and convey the steel bars in the horizontal direction; the attitude adjustment assembly 23 includes a pressure roller 231; the pressure roller 231 is rotatably fixed on the mounting frame 21; the rotation axis of the pressure roller 231 is perpendicular to the conveying direction of the clamping and conveying assembly 22 on the steel bars; the pressure roller 231 is located on the upper front side of the forward direction of the clamping and conveying assembly 22 conveying the steel bars.

[0023] In practical use, the workflow of this single-strand automatic rebar threading device is as follows: First, the moving bracket 1 drives the feeding component 2 to move, enabling the feeding component 2 to reach the position where the rebar is placed. Next, the clamping and conveying component 22 precisely clamps the rebar. Subsequently, the clamping and conveying component 22 pushes the rebar along its extension direction to achieve the threading operation. Some structures of the moving bracket 1 and the feeding component 2 can be referenced from existing technologies. For example, a rebar threading machine disclosed in Chinese Patent Application No. 202222910589.1 has a combination of bracket, X-axis moving component, and Y-axis moving component that is consistent with the structural principle of the moving bracket 1 in this embodiment; the feeding component of that rebar threading machine is similar in structure to the mounting frame 21 and clamping and conveying component 22 in this embodiment. Since the relevant specific structures have been disclosed in detail in the prior art, they will not be repeated here. The significant difference between this embodiment and the aforementioned prior art is the addition of an attitude adjustment component 23. Specifically, a pressure roller 231 is added in front of the clamping and conveying assembly 22. This pressure roller 231 applies downward pressure to the reinforcing bar, effectively preventing the reinforcing bar from warping during the threading process. In the prior art, due to the uneven weight distribution of the reinforcing bar on both sides of the force application point when the clamping and conveying assembly 22 clamps the reinforcing bar, the portion of the reinforcing bar in front of the force application point is shorter and lighter, while the portion of the reinforcing bar behind the force application point is longer and heavier. This causes the reinforcing bar in front of the force application point to warp due to uneven force. In this embodiment, by setting the pressure roller 231, a downward force is applied to the reinforcing bar in front of the force application point, balancing the force on both sides of the reinforcing bar, thereby preventing the reinforcing bar from warping.

[0024] The single-strand automatic rebar threading device of the rebar cage welding machine provided in Embodiment 1 of this utility model solves the problem of the rebar head being raised and difficult to align with the circular hole of the threading plate in the prior art, and can reduce the situation of the rebar head being raised.

[0025] In actual operation, when the clamping and conveying assembly 22 clamps and conveys the reinforcing bars, due to the large weight and long length of the reinforcing bars, the rear end is prone to sag due to gravity, which affects the overall horizontal posture of the reinforcing bars and reduces the accuracy and quality of threading. To solve this problem, in this embodiment, the posture adjustment assembly 23 also includes a support roller 232; the support roller 232 is rotatably fixed on the mounting frame 21; the axis of rotation of the support roller 232 is perpendicular to the conveying direction of the reinforcing bars by the clamping and conveying assembly; the support roller 232 is located on the lower rear side of the direction in which the clamping and conveying assembly 22 conveys the reinforcing bars. The support roller 232 is rotatably fixed on the mounting frame 21, and its position is located on the lower rear side of the direction in which the clamping and conveying assembly 22 conveys the reinforcing bars. The height of the upper rim of the support roller 232 is lower than the height of the central axis of the reinforcing bar when the clamping and conveying assembly 22 clamps the reinforcing bar. The support roller 232 needs to be able to provide an upward lifting force for the rear end of the reinforcing bar to counteract the gravity of the rear end of the reinforcing bar and keep the reinforcing bar in a good horizontal state during the conveying process. By adding a support roller 232, which works in conjunction with the pressure roller 231, the posture of the steel bar is adjusted from both the top and bottom. The pressure roller 231 presses down on the front end of the steel bar to prevent it from tilting up; the support roller 232 lifts the rear end of the steel bar to prevent it from sagging.

[0026] As a preferred embodiment, the clamping and conveying assembly 22 includes an active feeding roller 221, a driven feeding roller 222, and a feeding motor 223; the active feeding roller 221 and the driven feeding roller 222 are provided with annular grooves at their middle ends; the feeding motor 223 is fixed on the mounting frame 21; the active feeding roller 221 is connected to the feeding motor 223 in a transmission manner; the axis of the active feeding roller 221 is vertical; the driven feeding roller 222 is rotatably fixed on the mounting frame 21; the annular grooves of the active feeding roller 221 and the driven feeding roller 222 are aligned at the same height. Both the active feeding roller 221 and the driven feeding roller 222 have annular grooves at their middle ends, and the heights of these grooves are aligned. Both rollers are positioned below the mounting frame 21. During operation, the bottom of the mounting frame 21 is aligned with the reinforcing bar. By adjusting the position of the mounting frame 21, the reinforcing bar is placed between the annular grooves of the two rollers. Due to the limiting effect of the grooves, the reinforcing bar is stably positioned on the predetermined conveying path, preventing lateral displacement during conveying. The feeding motor 223 is fixed to the mounting frame 21 and is connected to the active feeding roller 221 via a transmission connection. When the feeding motor 223 starts, its power drives the active feeding roller 221 to rotate. Since the axis of the active feeding roller 221 is vertical, its rotation causes the reinforcing bar to move, which in turn drives the driven feeding roller 222 to rotate, thus achieving coordinated operation with the driven feeding roller 222. The active feeding roller 221 provides forward conveying power to the reinforcing bar through friction with it, ensuring smooth conveying at a predetermined speed and direction. The driven feeding roller 222 is rotatably fixed to the mounting frame 21. It rotates accordingly based on the rotation of the active feeding roller 221 and the conveying state of the reinforcing bar, forming a good cooperation with the active feeding roller 221. Together, they provide uniform and stable clamping and conveying forces to the reinforcing bar, ensuring its stability during conveying.

[0027] Since the clamping and conveying assembly 22 can be directly moved and clamped by the movable bracket 1, if the support roller 232 is always below the clamping and conveying assembly 22, the steel bar will first contact the support roller 232 during the vertical downward movement of the clamping and conveying assembly 22, and will not be aligned with the clamping point of the clamping and conveying assembly 22. The steel bar will be difficult to be directly clamped by the clamping and conveying assembly 22. To solve this problem, in this embodiment, the attitude adjustment assembly 23 preferably includes a support roller drive cylinder 233 and a support roller bracket 234. The support roller drive cylinder 233 is fixed on the mounting bracket 21. The telescopic shaft of the support roller drive cylinder 233 is horizontal. The extension direction of the telescopic shaft of the support roller drive cylinder 233 is perpendicular to the conveying direction of the clamping and conveying assembly 22 to the steel bar. The support roller bracket 234 is fixed on the telescopic shaft of the support roller drive cylinder 233. The support roller 232 is rotatably fixed on the support roller bracket 234. The roller 232 can be moved away from the active feeding roller 221 and the driven feeding roller 222 by the roller drive cylinder 233. After the steel bar is fixed in the annular groove between the active feeding roller 221 and the driven feeding roller 222, the roller support 234 can be moved by the roller drive cylinder 233, so that the upper rim of the roller 232 fixed on the roller support 234 supports the lower side of the steel bar.

[0028] As a preferred embodiment, the clamping and conveying assembly 22 further includes a pressing cylinder 224 and a driven roller support 225. The pressing cylinder 224 is fixed on the mounting frame 21. The telescopic shaft of the pressing cylinder 224 is horizontal. The extension direction of the telescopic shaft of the pressing cylinder 224 is perpendicular to the conveying direction of the clamping and conveying assembly 22 on the reinforcing bars. The driven roller support 225 is fixed on the telescopic shaft of the pressing cylinder 224. The driven feeding roller 222 is rotatably fixed on the driven roller support 225. The pressing cylinder 224 is fixed on the mounting frame 21, its telescopic shaft is horizontal, and the extension direction of the telescopic shaft is perpendicular to the conveying direction of the clamping and conveying assembly 22 on the reinforcing bars. The driven roller support 225 is fixed on the telescopic shaft of the pressing cylinder 224, and the driven feeding roller 222 is rotatably mounted on the driven roller support 225. This structure allows the pressing cylinder 224 to move the driven roller support 225 and the driven feeding roller 222 mounted on it horizontally via the extension and retraction of its telescopic shaft. In practical applications, when dealing with steel bars of different diameters, the distance between the driven feeding roller 222 and the active feeding roller 221 can be flexibly adjusted by controlling the extension and retraction of the pressing cylinder 224's telescopic shaft. For larger diameter steel bars, the pressing cylinder 224 can move the driven feeding roller 222 away from the active feeding roller 221 to ensure that the steel bar can be smoothly placed into the annular groove between them. For smaller diameter steel bars, the pressing cylinder 224 can push the driven feeding roller 222 closer to the active feeding roller 221, so that the two are tightly fitted to the steel bar, providing sufficient clamping force. This adjustable structure greatly enhances the versatility of the clamping and conveying assembly 22 for steel bars of different specifications, reducing the need for... This reduces the need for large-scale equipment adjustments or component replacements due to changes in rebar specifications, improving production efficiency and reducing production costs. Furthermore, the pressure cylinder 224 can precisely control the pressure applied to the rebar by the driven feeding roller 222 according to actual needs. When conveying heavier rebars or rebars with high surface friction, the extension and retraction of the pressure cylinder 224 can be appropriately increased, allowing the driven feeding roller 222 to apply greater pressure to the rebar. This ensures sufficient friction between the rebar and the roller during conveying, preventing slippage and ensuring the stability and accuracy of the conveying process. Conversely, when conveying lighter or more fragile rebars, the pressure can be reduced to avoid damage to the rebar surface.

[0029] As a preferred embodiment, the clamping and conveying assembly 22 further includes a second pressing cylinder 226, a second driven roller support 227, a first driven roller 228, and a second driven roller 229; the first driven roller 228 and the second driven roller 229 are provided with annular grooves at their middle ends; the annular grooves at the middle ends of the first driven roller 228, the second driven roller 229, the active feeding roller 221, and the driven feeding roller 222 are flush; the first driven roller 228 is rotatably fixed on the mounting frame 21; the second driven roller 229... The first driven roller 228 has a vertical axis; the second driven roller 229 is rotatably fixed on the second driven roller support 227; the second driven roller support 227 is fixed on the output shaft of the second pressing cylinder 226; the second pressing cylinder 226 is fixed on the mounting frame 21; the output shaft of the second pressing cylinder 226 is horizontal; in the conveying direction of the clamping and conveying assembly 22 on the reinforcing bars, the first driven roller 228 is located behind the active feeding roller 221, and the second driven roller 229 is located behind the driven feeding roller 222. The arrangement of the first driven roller 228 and the second driven roller 229 increases the clamping points for the reinforcing bars. When the reinforcing bars are conveyed, their heads first reach between the active feeding roller 221 and the driven feeding roller 222. The active feeding roller 221 and the driven feeding roller 222 apply clamping and conveying forces to the reinforcing bars, driving them forward. As the reinforcing bars continue to move forward, they will pass between the first driven roller 228 and the second driven roller 229. The first driven roller 228 and the second driven roller 229 can play an auxiliary clamping and guiding role for the reinforcing bars, further enhancing the constraint on the reinforcing bars and enabling them to maintain a stable posture during the conveying process.

[0030] In addition, in this embodiment, a number of guide wheels can be rotatably fixed on the mounting frame 21. The rotation axis of the guide wheels is vertical, and the guide wheels are distributed on both sides of the direction of the steel bar travel. The guide wheels can guide the steel bar to align between the active feeding roller 221 and the driven feeding roller 222, thus avoiding the situation of the steel bar shifting left and right during the conveying process.

[0031] In summary, this utility model discloses a single-strand automatic rebar threading device for a rebar cage welding machine, relating to the field of rebar threading machines. It includes a movable support and a feeding assembly; the feeding assembly is fixed to the movable support; the movable support can drive the feeding assembly to move horizontally and vertically; the feeding assembly includes a mounting frame, a clamping and conveying assembly, and a posture adjustment assembly; the clamping and conveying assembly is fixed to the mounting frame; the clamping and conveying assembly can clamp and convey the rebar horizontally; the posture adjustment assembly includes a pressure roller; the pressure roller is rotatably fixed to the mounting frame; the pressure roller is located on the upper front side of the clamping and conveying assembly in the forward direction of conveying the rebar. The single-strand automatic rebar threading device for a rebar cage welding machine provided by this utility model solves the problem in existing technologies where the rebar head is raised and difficult to align with the circular hole of the threading plate, thus reducing the occurrence of rebar head raising.

[0032] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. An automatic single-strand rebar threading device for a rebar cage welding machine, comprising a movable support and a feeding assembly; The feeding assembly is fixed on the movable support; the movable support can drive the feeding assembly to move horizontally and vertically. Its features are, The feeding assembly includes a mounting frame, a clamping and conveying assembly, and an attitude adjustment assembly; The clamping and conveying assembly is fixed on the mounting frame; the clamping and conveying assembly can clamp and convey the reinforcing bars in the horizontal direction. The attitude adjustment component includes a pressure wheel; The pressure roller is rotatably fixed on the mounting frame; the axis of rotation of the pressure roller is perpendicular to the conveying direction of the clamping and conveying assembly for the reinforcing bars; the pressure roller is located on the upper front side of the forward direction of the clamping and conveying assembly for conveying the reinforcing bars.

2. The single-strand automatic rebar threading device of the rebar cage welding machine as described in claim 1, characterized in that, The attitude adjustment assembly also includes a support roller; the support roller is rotatably fixed on the mounting frame; the axis of rotation of the support roller is perpendicular to the conveying direction of the clamping and conveying assembly for the reinforcing bar; The support roller is positioned on the lower rear side of the forward direction of the conveying steel bar by the clamping and conveying assembly.

3. The single-strand automatic rebar threading device of the rebar cage welding machine as described in claim 2, characterized in that, The clamping and conveying assembly includes an active feeding roller, a driven feeding roller, and a feeding motor; The active feeding roller and the driven feeding roller are provided with an annular groove at their middle ends; The feeding motor is fixed on the mounting frame; the active feeding roller is connected to the feeding motor in a driving connection; the axis of the active feeding roller is vertical; The driven feeding roller is rotatably fixed on the mounting frame; The annular grooves of the active feeding roller and the driven feeding roller are aligned at the same height.

4. The single-strand automatic rebar threading device of the rebar cage welding machine as described in claim 3, characterized in that, The clamping and conveying assembly also includes a pressing cylinder and a driven roller support; The pressing cylinder is fixed on the mounting frame; the telescopic shaft of the pressing cylinder is horizontal; the extension direction of the telescopic shaft of the pressing cylinder is perpendicular to the conveying direction of the clamping and conveying assembly to the reinforcing bar; The driven roller support is fixed on the telescopic shaft of the pressing cylinder; The driven feeding roller is rotatably fixed on the driven roller support.

5. The single-strand automatic rebar threading device of the rebar cage welding machine as described in claim 4, characterized in that, The clamping and conveying assembly also includes a second pressing cylinder, a second driven roller support, a first driven roller, and a second driven roller; The first driven roller and the second driven roller are provided with annular grooves at their middle ends; the annular grooves at the middle ends of the first driven roller, the second driven roller, the active feeding roller, and the driven feeding roller are flush. The first driven roller is rotatably fixed on the mounting bracket; the axis of the first driven roller is vertical. The second driven roller is rotatably fixed on the second driven roller support; the second driven roller support is fixed on the output shaft of the second pressing cylinder; the second pressing cylinder is fixed on the mounting bracket; the output shaft of the second pressing cylinder is horizontal. In the direction of conveying the reinforcing bars by the clamping and conveying assembly, the first driven roller is located behind the active feeding roller, and the second driven roller is located behind the driven feeding roller.

6. The single-strand automatic rebar threading device of the rebar cage welding machine as described in claim 3, characterized in that, The attitude adjustment assembly also includes a roller drive cylinder and a roller bracket; the roller drive cylinder is fixed on the mounting frame; the telescopic shaft of the roller drive cylinder is horizontal; the extension direction of the telescopic shaft of the roller drive cylinder is perpendicular to the conveying direction of the clamping and conveying assembly to the reinforcing bar; The roller support bracket is fixed on the telescopic shaft of the roller drive cylinder; the roller is rotatably fixed on the roller support bracket.

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