Reinforcing steel bar straightening and positioning auxiliary device
By using a design that drives the straightening roller assembly with forward and reverse threaded screws and a detachable guide cylinder, the problems of complex adjustment and inconvenient guidance in existing rebar straightening devices are solved, achieving efficient and precise straightening results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING HONGSHENG ELECTROMECHANICAL CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-26
AI Technical Summary
Existing rebar straightening devices involve numerous and complex operation steps during adjustment, and the guide components are inconvenient to adjust, making it difficult to adapt to metal wires of different specifications, thus affecting the straightening effect and efficiency.
The design employs a forward and reverse threaded screw to drive two sets of straightening rollers to move closer or further apart synchronously. Combined with a detachable guide cylinder and a guide seat aligned with the center line of the straightening channel, it enables rapid adjustment of the roller spacing and guidance, ensuring that the metal wire enters the straightening zone centered.
The adjustment process has been simplified, the straightening accuracy and efficiency have been improved, the adaptability to metal wires of different specifications and the symmetry of the straightening channel have been ensured, and the problem of uneven straightening caused by offset has been avoided.
Smart Images
Figure CN224273085U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of straightening equipment technology, specifically to a rebar straightening and positioning auxiliary device. Background Technology
[0002] In the field of metal processing, metal wires or coils typically require straightening before being used to manufacture workpieces or for direct application, to ensure their straightness meets process requirements. For example, materials such as reinforcing bars, steel wires, and copper rods are prone to bending and deformation during transportation or storage, which can affect subsequent processing accuracy or product performance if used directly. Therefore, straightening devices play a crucial role in metal processing.
[0003] Currently, roller assemblies are commonly used to straighten metal wires by compression. For example, prior art CN219881152U discloses a rebar straightening roller device, which changes the roller gap by adjusting the relative positions of the first and second mounting seats. Compared to the traditional method of adjusting each roller individually, this method is more convenient to operate. However, this device still has the following technical problems in practical use:
[0004] 1. The adjustment process is still relatively complicated: Although the device adopts a detachable mounting base design, it is still necessary to disassemble the connection between the first mounting base and the second mounting base each time it is adjusted, and then tighten it again after adjustment. Although this adjustment method is an improvement over the traditional method, it still requires disassembly and reinstallation, which involves many steps and affects the adjustment efficiency. It is especially cumbersome when processing metal wires of various specifications.
[0005] 2. Inconvenient adjustment and insufficient adaptability of the guide components: The device has guide components (such as guide tubes or guide holes) at both ends of the mounting base to guide the metal wire into the straightening area; however, when the position of the mounting base is adjusted, the position of the guide components also needs to be adjusted accordingly, increasing the complexity of operation. In addition, the size of the guide tube or guide hole is fixed. For metal wires of different diameters, although it can play a certain guiding role, it is difficult to ensure precise alignment, which may cause the wire to deviate when entering the straightening area, affecting the straightening effect. Utility Model Content
[0006] This utility model provides a rebar straightening and positioning auxiliary device, which can solve the technical problems of existing straightening devices having many operation steps and complex adjustment processes.
[0007] This application provides the following technical solution:
[0008] A rebar straightening and positioning auxiliary device includes a base, on which two sets of straightening rollers and a drive assembly for driving the two sets of straightening rollers to move closer or further apart are mounted. Each set of straightening rollers includes a mounting plate and several rollers arranged in a row on the mounting plate. The two sets of rollers arranged in a row form a straightening channel for metal wire to pass through. The drive assembly includes a positive and negative threaded rod rotatably mounted on the base, with two sets of sliders mounted on the positive and negative threaded rods. Two sets of mounting plates are respectively mounted on the two sets of sliders. A guide seat is also provided in the middle of the inlet end of the base. A guide cylinder is detachably mounted on the guide seat, and the center line of the guide cylinder is consistent with the center line of the straightening channel.
[0009] Beneficial effects:
[0010] 1. By using positive and negative threaded screws connected to the mounting plates of two straightening roller groups respectively, when the screws rotate, the two sets of sliders move synchronously in opposite directions, causing the two straightening roller groups to move closer or further away simultaneously, thereby adjusting the width of the straightening channel. Compared with the existing technology that requires disassembling the mounting base for adjustment, this application only requires rotating the screw to complete the adjustment of the roller spacing, without the need to disassemble and install fasteners, greatly reducing the operation steps and improving the adjustment efficiency. Secondly, synchronous adjustment can also ensure symmetry, so that the straightening channel always remains symmetrical and the center line remains unchanged, which is conducive to improving the straightening accuracy. Finally, the screw drive mechanism has self-locking properties, and no additional fixing is required after the adjustment is in place, which can effectively prevent the roller group from shifting during the straightening process and improve the stability of equipment operation.
[0011] 2. By setting a guide seat at the base entrance, a guide cylinder can be detachably installed on the guide seat, allowing the guide cylinder to be replaced according to the diameter of the metal wire to accommodate different specifications of wire; and the center line of the guide cylinder is aligned with the center line of the straightening channel, ensuring that the metal wire remains centered when entering the straightening zone, avoiding uneven straightening caused by offset; while in the existing technology, the position of the guide component needs to be readjusted after adjusting the roller group, but in this solution, the guide cylinder and the straightening channel are always automatically aligned without additional adjustment, which helps to further simplify the operation process.
[0012] Furthermore, the base has a U-shaped cross-section, with the two ends of the positive and negative threaded rods rotatably mounted on the left and right side walls of the base, and one end of the rod extending out of the side wall and connected to a handwheel; the top of the base is also provided with a limiting groove, in which a support rod is slidably mounted, the bottom of the support rod is connected to the slider of the positive and negative threaded rod, and the top of the support rod is connected to the bottom of the mounting plate.
[0013] Beneficial effects: Compared with open or single-sided support structures, the U-shaped base has stronger bending and torsional resistance, ensuring the stability of the lead screw after installation; while the cooperation between the limiting groove and the support rod can strictly limit the movement trajectory of the roller assembly, ensuring that it only moves along the lead screw axis and avoiding roller deflection caused by steel bar compression.
[0014] Furthermore, the mounting plates are a left mounting plate and a right mounting plate. The left mounting plate is equipped with three rollers, and the right mounting plate is equipped with four rollers. Among them, the two sets of rollers near the entrance ends of the left and right mounting plates are symmetrically arranged, and the other two rows of rollers are spaced apart.
[0015] Beneficial effects: A set of symmetrical rollers is installed at the entrance ends (in the direction of wire entry) of the left and right mounting plates, forming an aligned straightening channel. This ensures initial centering and stable wire introduction, thereby evenly distributing the initial bending stress of the wire and preventing excessive force on one side from damaging the rollers or the wire surface. The remaining asymmetrical layout allows for a more flexible distribution of the contact points between the rollers and the wire, enabling the staggered rollers to apply pressure to the wire from different directions, more effectively eliminating wire bending.
[0016] Furthermore, on the left mounting plate, the rollers near the entrance are movable rollers, while the rest are stationary rollers; on the right mounting plate, the rollers near the entrance are stationary rollers, while the rest are movable rollers.
[0017] Beneficial effects: The active rotation of the moving roller can quickly grab the wire and pull it into the straightening zone, avoiding slippage and jamming caused by rust or bending of the wire surface; while the stationary roller constrains the lateral displacement of the wire through frictional resistance, forming a "pull and resistance" synergistic effect with the moving roller to ensure that the wire enters along the center line of the straightening channel.
[0018] Furthermore, the surface of the base inlet or outlet end is provided with scale lines, which are set along the width direction of the base.
[0019] Beneficial effects: During use, operators can directly read the spacing of the roller assembly through the scale lines without the need for additional measuring tools (such as calipers), greatly improving adjustment efficiency; for example, for metal wires of different diameters (such as Φ6mm and Φ10mm steel bars), the standardized straightening channel width can be quickly set according to the scale lines to ensure process consistency.
[0020] Furthermore, the guide seat is a sleeve structure, and the inner wall of the sleeve structure is provided with internal threads, while the outer wall of the guide cylinder is provided with external threads, and the guide cylinder is threadedly connected to the guide seat.
[0021] Beneficial effects: The guide cylinder can be installed or replaced simply by rotating it, making the operation simple and efficient; the threaded connection ensures that the center line of the guide cylinder is automatically aligned with the axis of the straightening channel, avoiding wire offset caused by manual installation deviation; and the threaded engagement provides mechanical self-locking, making it less prone to loosening under vibration or high-speed feeding conditions, resulting in high reliability.
[0022] Furthermore, the guide cylinder is available in various models. Different models of guide cylinders have the same outer diameter but different inner diameters, which are used to position and guide metal wires of different models.
[0023] Beneficial effects: All models of guide cylinders use the same outer diameter and thread specifications to ensure compatibility with guide seats; while the differentiated inner diameter can be designed with corresponding guide channels according to different metal wire diameters (such as Φ6mm / Φ10mm / Φ14mm).
[0024] Furthermore, the front end of the guide tube is also provided with a flared section in the shape of a trumpet.
[0025] Beneficial effects: The flared part can serve as both a guide and a grip, making it easy to hold and disassemble the guide tube. Attached Figure Description
[0026] Figure 1 This is a top view of the steel bar straightening and positioning auxiliary device of this utility model;
[0027] Figure 2 This is a sectional view of the steel bar straightening and positioning auxiliary device of this utility model;
[0028] Figure 3 for Figure 1 Rear view (the straightening roller assembly is omitted in the figure). Detailed Implementation
[0029] The following detailed description illustrates the specific implementation method:
[0030] The markings in the accompanying drawings include: base 1, limit groove 11, U-shaped groove 12, scale line 13, left mounting plate 21, support rod 212, right mounting plate 22, moving roller 31, stationary roller 32, guide seat 4, guide cylinder 41, flared part 411, positive and negative threaded rod 5, slider 51, and handwheel 52.
[0031] Example 1
[0032] like Figure 1-2As shown, the rebar straightening and positioning auxiliary device includes a base 1, on which two sets of straightening rollers and a drive assembly for driving the two sets of straightening rollers to move closer or further apart are provided. Each set of straightening rollers includes a mounting plate and several rollers arranged in a row on the mounting plate. The two sets of rollers arranged in a row form a straightening channel for metal wires to pass through. The drive assembly includes a positive and negative threaded rod 5 rotatably mounted on the base 1. Two sets of sliders 51 are provided on the positive and negative threaded rods 5, and two sets of mounting plates are respectively mounted on the two sets of sliders 51.
[0033] Specific examples Figure 2 As shown, the base 1 has a U-shaped cross-section. The two ends of the positive and negative threaded rods 5 are rotatably mounted on the left and right side walls of the base 1, with one end extending out of the side wall and connected to a handwheel 52. A limiting groove 11 is also provided on the top of the base 1, within which a support rod 212 is slidably mounted. The bottom of the support rod 212 is bolted to the slider 51 of the positive and negative threaded rods 5, and the top of the support rod 212 is bolted to the bottom of the mounting plate. Figure 1 As shown, in order to further improve the stability of the mounting plate in this embodiment, U-shaped grooves 12 can be provided on both sides of the base 1 located in the limiting groove 11, and a limiting rod (not shown in the figure) can be slidably provided in the U-shaped groove 12. The top of the limiting rod extends out of the U-shaped groove 12 and is fixedly connected to the bottom of the mounting plate.
[0034] For ease of distinction, this embodiment divides the mounting plate into a left mounting plate 21 and a right mounting plate 22. The left mounting plate 21 has three rollers, and the right mounting plate 22 has four rollers. Two sets of rollers near the inlet ends of the left and right mounting plates 21 and 22 are symmetrically arranged, while the remaining two rows of rollers are spaced apart. In this embodiment, the symmetrically arranged rollers form aligned straightening channels, ensuring initial alignment and stable introduction, thereby evenly dispersing the initial bending stress of the wire and preventing excessive force on one side from damaging the rollers or the wire surface. The remaining asymmetrical layout allows for a more flexible distribution of the contact points between the rollers and the wire, enabling the staggered rollers to apply pressure to the wire from different directions, more effectively eliminating wire bending.
[0035] Specifically, on the left mounting plate 21, the roller near the inlet end is a movable roller 31, and the remaining rollers are stationary rollers 32; on the right mounting plate 22, the roller near the inlet end is a stationary roller 32, and the remaining rollers are movable rollers 31. In this embodiment, the movable roller 31 means that it remains in a rotating state during use, and the stationary roller 32 remains in a stationary state during use. The movable roller 31 can be driven to rotate by an active driving component such as a motor. For example, the motor is mounted on the mounting plate, and the movable roller 31 is fixedly connected to the rotating shaft of the motor. The stationary roller 32 is fixed to the mounting plate by a support shaft. Of course, the movable roller 31 and the stationary roller 32 can also be installed using other installation methods common in the art, which will not be described in detail here.
[0036] More preferably, in this example, the surface of the inlet or outlet end of the base 1 is provided with a scale line 13, which is set along the width direction of the base 1. In use, the operator can directly read the spacing of the roller assembly through the scale line 13 without the need for additional measuring tools (such as calipers), which greatly improves the adjustment efficiency. For example, for metal wires of different diameters (such as Φ6mm and Φ10mm steel bars), the standardized straightening channel width can be quickly set according to the scale line 13 to ensure process consistency.
[0037] like Figure 1 , 3 As shown, a guide seat 4 is also provided in the middle of the inlet end of the base 1. A guide cylinder 41 is detachably mounted on the guide seat 4, and the center line of the guide cylinder 41 is consistent with the center line of the straightening channel. The front end of the guide cylinder 41 is also provided with a flared part 411 in the shape of a trumpet. The flared part 411 can serve as both a guide and a holding part, making it easy to hold and disassemble the guide cylinder 41. Specifically, the guide seat 4 is a sleeve structure, and the inner wall of the sleeve structure is provided with internal threads. The outer wall of the guide cylinder 41 is provided with external threads, and the guide cylinder 41 is threadedly connected to the guide seat 4. In this embodiment, the installation or replacement of the guide cylinder 41 can be completed by rotation, which is simple and efficient. The threaded connection ensures that the center line of the guide cylinder 41 is automatically aligned with the axis of the straightening channel, avoiding wire offset caused by manual installation deviation. The threaded engagement provides mechanical self-locking, which is not easy to loosen under vibration or high-speed feeding conditions, and has high reliability.
[0038] The guide cylinder 41 is available in various models, with the same outer diameter but different inner diameters, used to position and guide different types of metal wires. Specifically, all models of guide cylinder 41 use the same outer diameter and thread specifications to ensure compatibility with the guide seat 4; while the differentiated inner diameters can be designed with corresponding guide channels according to different metal wire diameters (such as Φ6mm / Φ10mm / Φ14mm). The guide channel can be slightly larger than the diameter of the metal wire; for example, a 6mm diameter metal wire uses a guide cylinder 41 with an inner diameter of 7mm to ensure smoother wire passage while providing better positioning and guidance.
[0039] In use, first select the appropriate guide cylinder 41 based on the metal wire to be straightened, such as a 6mm diameter steel bar. Then, install the guide cylinder 41 onto the guide seat 4, and turn the handwheel 52 to rotate the forward and reverse threaded rods 5 to adjust the width of the straightening channel to match the metal wire to be straightened. After adjustment, feed the wire into the guide cylinder 41, and with the cooperation of the moving roller 31 and the stationary roller 32, the wire is fed with a pull and a resistance, and then sent to the subsequent stage.
[0040] This solution only requires rotating the forward and reverse threaded rods 5 to adjust the roller spacing, eliminating the need to disassemble and assemble fasteners, significantly reducing operation steps and improving adjustment efficiency. Furthermore, the center line of the guide cylinder 41 is aligned with the center line of the straightening channel, ensuring that the metal wire remains centered when entering the straightening zone, avoiding uneven straightening caused by offset. Compared to existing technologies that require adjusting the position of the guide components, this application further simplifies the operation process and improves operational efficiency.
[0041] The above are merely embodiments of this utility model, and the utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A rebar straightening and positioning auxiliary device, comprising a base, characterized in that, The base is provided with two sets of straightening rollers and a drive assembly for driving the two sets of straightening rollers to move closer or further apart. Each set of straightening rollers includes a mounting plate and several rollers arranged in a row on the mounting plate. The two sets of rollers arranged in a row form a straightening channel for the metal wire to pass through. The drive assembly includes a positive and negative threaded rod rotatably mounted on the base. Two sets of sliders are provided on the positive and negative threaded rods. Two sets of mounting plates are respectively mounted on the two sets of sliders. A guide seat is also provided in the middle of the inlet end of the base. A guide cylinder is detachably mounted on the guide seat, and the center line of the guide cylinder is consistent with the center line of the straightening channel.
2. The rebar straightening and positioning auxiliary device according to claim 1, characterized in that: The base has a U-shaped cross-section. The two ends of the positive and negative threaded rods are rotatably mounted on the left and right side walls of the base, and one end of the rod extends out of the side wall and is connected to a handwheel. The top of the base is also provided with a limiting groove, and a support rod is slidably mounted in the limiting groove. The bottom of the support rod is connected to the slider of the positive and negative threaded rod, and the top of the support rod is connected to the bottom of the mounting plate.
3. The rebar straightening and positioning auxiliary device according to claim 2, characterized in that: The mounting plates are a left mounting plate and a right mounting plate. The left mounting plate is equipped with three rollers and the right mounting plate is equipped with four rollers. The two sets of rollers near the entrance ends of the left and right mounting plates are symmetrically arranged, and the other two rows of rollers are spaced apart.
4. The rebar straightening and positioning auxiliary device according to claim 3, characterized in that: The rollers on the left mounting plate near the entrance are movable rollers, and the rest are stationary rollers; the rollers on the right mounting plate near the entrance are stationary rollers, and the rest are movable rollers.
5. The rebar straightening and positioning auxiliary device according to claim 4, characterized in that: The surface of the base inlet or outlet end is provided with scale lines, which are set along the width direction of the base.
6. The rebar straightening and positioning auxiliary device according to any one of claims 1-5, characterized in that: The guide seat is a sleeve structure, and the inner wall of the sleeve structure is provided with internal threads, while the outer wall of the guide cylinder is provided with external threads. The guide cylinder and the guide seat are threadedly connected.
7. The rebar straightening and positioning auxiliary device according to claim 6, characterized in that: The guide cylinder is available in various models. Different models of guide cylinders have the same outer diameter but different inner diameters, which are used to position and guide metal wires of different models.
8. The rebar straightening and positioning auxiliary device according to claim 7, characterized in that: The front end of the guide cylinder is also provided with a flared section in the shape of a trumpet.