A steel bar straightening mechanism

Abstract

This utility model discloses a steel bar straightening mechanism, including a straightening mechanism and a feeding tray for placing the steel bar coil. The feeding tray is equipped with a limiting cylinder. Before entering the straightening mechanism, the steel bar is bent in the opposite direction by the limiting cylinder. An mounting plate is provided on the side of the feeding tray, and a movable plate is slidably mounted on the mounting plate. A screw pair is provided at the bottom of the movable plate, and a self-locking screw is rotatably mounted in the through groove in the middle of the movable plate. The self-locking screw is installed in cooperation with the screw pair. The limiting cylinder is rotatably mounted on the movable plate through a mounting shaft. The steel bar will not twist before straightening, ensuring the mechanical properties of the steel bar. Moreover, the initial reverse bending of the coiled steel bar before straightening significantly reduces the curvature of the steel bar. Subsequent straightening will not cause cracking, reducing the deformation of the steel bar during straightening and thus improving the straightening efficiency.

Description

Technical Field

[0001] This utility model relates to the field of steel bar production technology, specifically a steel bar straightening mechanism. Background Technology

[0002] Currently, straightening steel bars is done using a straightening machine. The coiled steel bars are placed at the entrance of the straightening machine, and after straightening, the coiled steel bars become straight steel bars. Patent CN222679364U discloses a steel bar straightening device, which includes a guiding mechanism and a straightening mechanism. The guiding mechanism is located to the left of the straightening mechanism. The guiding mechanism includes a set of radially arranged guide rods, forming a conical structure with the left end opening larger than the right end opening. The left end of the guide rod is fixedly connected to the base via a left support member, and the right end of the guide rod is fixedly connected to the base via a right support member. A guide sleeve for use with the steel bar is provided inside the right support member. The straightening mechanism includes a circular steel tube with an inner diameter larger than the diameter of the steel bar. The axis of the guide sleeve and the axis of the circular steel tube are on the same straight line. The guiding mechanism in this patent guides the steel bar during wire feeding, preventing cracking after straightening. Furthermore, the guiding mechanism allows the steel bar to smoothly enter the subsequent straightening mechanism, avoiding jamming.

[0003] However, in the above scheme, the steel bar inevitably twists during its journey from the guide mechanism into the straightening mechanism. This twisting alters the internal crystal structure of the steel bar, potentially causing microcracks. Subsequent straightening also introduces new stresses, which may even exacerbate damage. Therefore, the steel bar straightened after twisting suffers from potential problems such as decreased mechanical properties, reduced fatigue strength, and increased brittleness. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a steel bar straightening mechanism that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a steel bar straightening mechanism, comprising a straightening mechanism and a feeding tray for placing steel bar coils, wherein the feeding tray is equipped with a limiting cylinder, and the steel bar is bent in the opposite direction by passing through the limiting cylinder before entering the straightening mechanism.

[0006] As a preferred embodiment of this utility model, the straightening mechanism is provided with longitudinal straightening rollers and transverse straightening rollers arranged alternately.

[0007] As a preferred embodiment of this utility model, a traction roller is provided at the end of the straightening mechanism away from the feeding tray.

[0008] As a preferred embodiment of this utility model, a mounting plate is provided on the side of the feeding tray, a movable plate is slidably provided on the mounting plate, a screw pair is provided at the bottom of the movable plate, a self-locking screw is rotatably provided in the through groove in the middle of the movable plate, the self-locking screw is installed in cooperation with the screw pair, and the limiting cylinder is rotatably installed on the movable plate through the mounting shaft.

[0009] As a preferred embodiment of this utility model, the adjusting end of the self-locking screw extends to the outside of the limiting cylinder.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the steel bar will not twist before straightening, which ensures the mechanical properties of the steel bar. Furthermore, the initial reverse bending of the coiled steel bar before straightening significantly reduces the curvature of the steel bar. Subsequent straightening will not cause cracking, reducing the amount of deformation during straightening and thus improving straightening efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the structure of this utility model;

[0013] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0014] Figure 4 This is a bottom view of the structure of this utility model.

[0015] In the diagram: 1. Straightening mechanism, 2. Feeding tray, 3. Bearing tray, 4. Central shaft, 5. Steel bar coil, 6. Mounting plate, 7. Mounting shaft, 8. Limiting cylinder, 9. Longitudinal straightening roller, 10. Transverse straightening roller, 11. Traction roller, 12. Moving plate, 13. Screw pair, 14. Self-locking screw. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4This utility model provides a technical solution: a steel bar straightening mechanism, including a straightening mechanism 1 and a feeding tray 2 for placing steel bar coils 5. The straightening mechanism 1 is provided with longitudinal straightening rollers 9 and transverse straightening rollers 10, which are not powered and are used to straighten the longitudinal and transverse bends of the steel bars, respectively. A traction roller 11 is provided at the end of the straightening mechanism 1 away from the feeding tray 2. The traction roller 11 is equipped with a power source and is used to provide traction force after clamping the steel bar so that it passes through the longitudinal straightening rollers 9 and transverse straightening rollers 10 for straightening.

[0018] The feeding tray 2 is equipped with a limiting cylinder 8. A mounting plate 6 is located on the side of the feeding tray 2, and a movable plate 12 is slidably mounted on the mounting plate 6. A screw assembly 13 is located at the bottom of the movable plate 12, and a self-locking screw 14 is rotatably mounted in the through groove in the middle of the movable plate 12. The self-locking screw 14 and the screw assembly 13 are fitted together. Rotating the self-locking screw 14 drives the screw assembly 13 to move. Under the limiting action of the mounting plate 6, the movable plate 12 will move along the axial direction of the self-locking screw 14. The limiting cylinder 8 is rotatably mounted on the movable plate 12 via a mounting shaft 7. Before entering the straightening mechanism 1, the steel bar is bent in the reverse direction by the limiting cylinder 3. Since the outer ring of the steel bar coil 5 has a small curvature while the inner ring has a large curvature, the distance between the limiting cylinder 8 and the steel bar coil 5 can be adjusted by the self-locking screw 14 to adjust the degree of reverse bending compensation of steel bars with different curvatures. The smaller the distance, the greater the degree of reverse bending, which better compensates for the reverse bending of the inner ring of steel bar with large curvature, minimizes the curvature of the steel bar before entering the straightening mechanism 1, reduces the deformation of the steel bar during straightening, and thus improves the straightening efficiency.

[0019] The adjusting end of the self-locking screw 14 extends to the outside of the limiting cylinder 8 so that the position of the limiting cylinder 3 can be adjusted by rotating the self-locking screw 14.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel bar straightening mechanism, characterized in that: It includes a straightening mechanism (1) and a feeding tray (2) for placing steel bar coils (5). The feeding tray (2) is equipped with a limiting cylinder (8). Before entering the straightening mechanism (1), the steel bar is bent in the opposite direction by passing through the limiting cylinder (8).

2. The steel bar straightening mechanism according to claim 1, characterized in that: The straightening mechanism (1) is provided with longitudinal straightening rollers (9) and transverse straightening rollers (10) arranged alternately.

3. The steel bar straightening mechanism according to claim 1, characterized in that: A traction roller (11) is provided at the end of the straightening mechanism (1) away from the feeding plate (2).

4. The steel bar straightening mechanism according to claim 1, characterized in that: The feeding tray (2) is provided with a mounting plate (6) on its side. A movable plate (12) is slidably provided on the mounting plate (6). A screw pair (13) is provided at the bottom of the movable plate (12). A self-locking screw (14) is rotatably provided in the through groove in the middle of the movable plate (12). The self-locking screw (14) is installed in cooperation with the screw pair (13). The limiting cylinder (8) is rotatably installed on the movable plate (12) through the mounting shaft (7).

5. A steel bar straightening mechanism according to claim 4, characterized in that: The adjusting end of the self-locking screw (14) extends to the outside of the limiting cylinder (8).

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