A multi-roller straightening mechanism for a pipe bending machine

Abstract

The utility model discloses a kind of multi-roller straightening mechanisms for pipe bender, it is related to the technical field of multi-roller straightening for pipe bender, including base frame and clamping protection mechanism, the top of base frame is fixedly connected with clamping protection mechanism, and clamping protection mechanism includes nut seat setting in the inner surface position of base frame, the inner surface of nut seat is threadedly connected with double-section threaded rod, and the top of nut seat is provided with side clamping column.This multi-roller straightening mechanism for pipe bender, compared with the existing ordinary straightening mechanism, realizes accurate clamping and safety protection for pipe body, quickly adjusts clamping spacing, shortens component replacement time, adapts to multi-specification and multi-section pipe, reduces the downtime of changing type, guarantees batch straightening high efficiency and stability, and provides longitudinal guidance guarantee, adapts to different pipe diameter, forms three-dimensional clamping with side clamping column, weakens vibration interference, improves straightening accuracy, pipe stability and pass rate, provides high-precision pipe blank for subsequent processing.

Description

Technical Field

[0001] This utility model relates to the field of multi-roller straightening technology for pipe bending machines, specifically a multi-roller straightening mechanism for pipe bending machines. Background Technology

[0002] The multi-roller system for pipe bending machines is a core component responsible for bending and shaping pipes or assisting in their transport. The multi-roller straightening mechanism for pipe bending machines is a supporting device that uses multiple sets of rollers to straighten pipes. It typically consists of multiple sets of horizontal and vertical rollers arranged alternately, along with an adjustment mechanism and support components. It is generally installed before the bending process. During operation, the pipe passes through the staggered rollers, which apply a reverse squeezing force to the bent pipe. The rollers rotate synchronously to transport the pipe. Each roller can be independently adjusted to accommodate different pipe specifications and handle bending in multiple directions, including vertical, horizontal, and vertical directions. This mechanism significantly improves pipe straightness, prevents bending defects from affecting subsequent bending accuracy, and reduces surface damage to the pipe. It is widely used in pipe pretreatment processes in the power, shipbuilding, and other fields.

[0003] For example, a straightening mechanism for a pipe bending machine, as described in application number CN201821427308.4, is used to straighten workpieces. It includes a base plate and two rows of rollers. The base plate is equipped with multiple bearings corresponding to each roller, and the rollers are installed within the bearings. A channel is formed between the two rows of rollers to allow the workpiece to pass through and be clamped. This invention effectively avoids roller tilting during straightening, ensuring the straightening effect. However, this straightening mechanism suffers from low clamping accuracy, poor pipe diameter adaptability, low changeover efficiency, and easy damage to the pipe body. Furthermore, it suffers from large coaxiality errors, strong vibration interference, and insufficient stability during straightening, which can negatively impact subsequent processing quality due to poor alignment.

[0004] Therefore, in view of this, we studied and improved the existing structure to address its shortcomings, and proposed a multi-roller straightening mechanism for pipe bending machines. Utility Model Content

[0005] The purpose of this invention is to provide a multi-roller straightening mechanism for a pipe bending machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-roller straightening mechanism for a pipe bending machine, comprising a base frame and a clamping and protective mechanism. The clamping and protective mechanism is fixedly connected to the top of the base frame, and the clamping and protective mechanism includes a nut seat disposed on the inner surface of the base frame. A double-segment threaded rod is threadedly connected to the inner surface of the nut seat, and a side clamping post is disposed on the top of the nut seat. A protective component is fixedly connected to the outer surface of the side clamping post, and a positioning bolt is penetratingly connected to the inner surface of the side clamping post.

[0007] Preferably, the outer surface of the side clamping column is provided with a tube, and the top of the tube is fixedly connected to a top guiding mechanism.

[0008] Preferably, the top guiding mechanism includes a shock-absorbing seat fixedly connected to the top of the base frame, and a shock-absorbing rod fixedly connected to the top of the shock-absorbing seat. A fixed frame is fixedly connected to the top of the shock-absorbing rod, and a movable block is provided on the inner surface of the fixed frame. A top clamping column is rotatably connected to one side of the movable block.

[0009] Preferably, a fixed seat is fixedly connected to the top of the base frame, and a drive motor is fixedly connected to one side of the fixed seat.

[0010] Preferably, the output end of the drive motor is fixedly connected to a bottom guide post, and a protective ring is fixedly connected to the outer surface of the bottom guide post.

[0011] Preferably, a top guide post is provided at the top of the bottom guide post, and a clamping seat is rotatably connected to one side of the top guide post.

[0012] Preferably, the inner surface of the clamping seat is threaded with a lead screw, and the bottom of the base frame is fixedly connected with a support frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model provides dual protection of precise clamping and safety through the setting of the clamping and protection mechanism, improving the straightening accuracy and applicability. It can quickly adjust the clamping distance for pipes of different diameters, improve the adjustment accuracy, and ensure that the pipe is always in the center position during the straightening process, avoiding straightening errors caused by clamping offset. The positioning bolt shortens the replacement time of the side clamping column through the quick locking and disassembly function. It can flexibly adapt to pipes of different cross sections such as round pipes and square pipes, greatly improving the adaptability of the mechanism to diverse workpieces. Through the synergistic effect of precise adjustment, buffer protection and quick changeover, the straightness error of the straightened pipe is controlled within the minimum error, reducing the surface damage rate, and reducing the downtime for changeover. It provides efficient and stable clamping protection for the batch straightening of multi-specification pipes. 2. This utility model provides comprehensive longitudinal guidance for the multi-roller straightening mechanism of the pipe bending machine through the setting of the top guiding mechanism, which significantly improves the straightening accuracy and pipe stability. The top clamping column flexibly adapts to different pipe diameters and forms a three-dimensional clamping net with the side clamping columns, which applies a balanced constraint force to the pipe and reduces the pipe coaxiality error during the straightening process. By reducing vibration interference, expanding the pipe diameter adaptation range, and strengthening the three-dimensional constraint, the overall straightening qualification rate is improved, providing a high-precision pipe blank foundation for subsequent pipe bending processing. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the structure of the fixing base 5 of this utility model; Figure 3 This is a schematic diagram of the structure of the clamping and protective mechanism 2 of this utility model; Figure 4 This is a schematic diagram of the top guiding mechanism 4 of this utility model.

[0015] In the diagram: 1. Base frame; 2. Clamping and protective mechanism; 201. Nut seat; 202. Double-section threaded rod; 203. Side clamping column; 204. Protective component; 205. Positioning bolt; 3. Pipe body; 4. Top guiding mechanism; 401. Shock-absorbing seat; 402. Shock-absorbing rod; 403. Fixed frame; 404. Moving block; 405. Top clamping column; 5. Fixed seat; 6. Drive motor; 7. Bottom guide column; 8. Protective ring; 9. Top guide column; 10. Clamping seat; 11. Screw; 12. Support frame. 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] like Figures 1-3 As shown, a multi-roller straightening mechanism for a pipe bending machine includes a base frame 1 and a clamping and protective mechanism 2. The clamping and protective mechanism 2 is fixedly connected to the top of the base frame 1, and includes a nut seat 201 disposed on the inner surface of the base frame 1. A double-threaded rod 202 is threadedly connected to the inner surface of the nut seat 201, and a side clamping post 203 is disposed on the top of the nut seat 201. A protective component 204 is fixedly connected to the outer surface of the side clamping post 203, and a positioning bolt 205 is penetratingly connected to the inner surface of the side clamping post 203. The threaded rod 205 on the inner surface of the base frame 1 is fixedly connected to the base frame 1. The female seat 201 provides a threaded connection base for the double-segment threaded rod 202. The rotation of the double-segment threaded rod 202 drives the two nut seats 201 on both sides to move in opposite directions, which drives the side clamping column 203 to open and close synchronously, thereby realizing the clamping and adjustment of the tube body 3. The protective component 204 on the outer surface of the side clamping column 203 can buffer the clamping force and avoid damage to the workpiece surface. The positioning bolt 205 penetrating the inner surface can not only lock the position of the side clamping column 203, but also quickly replace the side clamping column 203 to adapt to different tube bodies 3, achieve stable clamping and protection, and ensure operational accuracy and workpiece integrity.

[0018] like Figure 4As shown, a tube body 3 is provided on the outer surface of the side clamping column 203, and a top guiding mechanism 4 is fixedly connected to the top of the tube body 3. The top guiding mechanism 4 includes a shock-absorbing seat 401 fixedly connected to the top of the base frame 1, and a shock-absorbing rod 402 is fixedly connected to the top of the shock-absorbing seat 401. A fixing frame 403 is fixedly connected to the top of the shock-absorbing rod 402, and a moving block 404 is provided on the inner surface of the fixing frame 403. A top clamping column 405 is rotatably connected to one side of the moving block 404. The shock-absorbing seat 401 is an integral mechanism. A buffer base is provided, and the shock-absorbing rod 402 at the top absorbs the vibration during the alignment process through elastic deformation, avoiding impact on positioning accuracy. The fixed frame 403 provides a sliding track for the moving block 404, and the moving block 404 can adjust its position along the track, driving the top clamping column 405 connected to one side to adapt to different pipe diameters. The top clamping column 405 and the side clamping column 203 form a three-dimensional clamping, applying a balanced force to the pipe body 3 from the top, bottom, left and right directions to achieve all-round alignment and ensure the coaxiality and stability of the pipe body 3 during processing.

[0019] Furthermore, a tube body 3 is provided on the outer surface of the side clamping column 203, and a top guiding mechanism 4 is fixedly connected to the top of the tube body 3. The top guiding mechanism 4 includes a shock-absorbing seat 401 fixedly connected to the top of the base frame 1, and a shock-absorbing rod 402 is fixedly connected to the top of the shock-absorbing seat 401. A fixing frame 403 is fixedly connected to the top of the shock-absorbing rod 402, and a moving block 404 is provided on the inner surface of the fixing frame 403. A top clamping column 405 is rotatably connected to one side of the moving block 404. The shock-absorbing seat 401 is an integral part of the machine. The structure provides a buffer base, and the shock-absorbing rod 402 at the top absorbs the vibration during the alignment process through elastic deformation, avoiding impact on the positioning accuracy. The fixed frame 403 provides a sliding track for the moving block 404. The moving block 404 can adjust its position along the track, driving the top clamping column 405 connected to one side to adapt to different pipe diameters. The top clamping column 405 and the side clamping column 203 form a three-dimensional clamping, applying a balanced force to the pipe body 3 from the top, bottom, left and right directions to achieve all-round alignment and ensure the coaxiality and stability of the pipe body 3 during processing.

[0020] Furthermore, a top guide post 9 is provided at the top of the bottom guide post 7, and a clamping seat 10 is rotatably connected to one side of the top guide post 9. A lead screw 11 is threadedly connected to the inner surface of the clamping seat 10, and a support frame 12 is fixedly connected to the bottom of the base frame 1. The clamping seat 10 rotatably connected to one side of the top guide post 9 can adjust its angle synchronously with the guide post. The lead screw 11 threaded on its inner side drives the clamping seat 10 to open and close by rotating, accurately adapting to different pipe diameters and applying a stable clamping force, thereby enhancing the constraint during the guiding process. The support frame 12 at the bottom of the base frame 1 provides rigid support for the overall structure, dispersing the load during equipment operation and preventing the guide post from shifting due to vibration.

[0021] Working principle: When using the multi-roller straightening mechanism of this pipe bending machine, the clamping and protection mechanism 2 at the bottom of the base frame 1 first initiates pre-treatment. The nut seat 201 and the double-segment threaded rod 202 are threaded together. Rotating the double-segment threaded rod 202 drives the two side clamping columns 203 to move towards each other. The positioning bolt 205 passes through the side clamping column 203, and the protective component 204 on its outer surface fits against the surface of the pipe body 3 to avoid clamping damage. At the same time, in the top guiding mechanism 4, the shock-absorbing seat 401 and the shock-absorbing rod 402 buffer vibration. The moving block 404 in the fixed frame 403 adjusts the height of the top clamping column 405, forming a three-dimensional shape with the side clamping columns 203. After constraint, the drive motor 6 on the fixed seat 5 starts, and the output end drives the bottom guide column 7 to rotate. The protective ring 8 on its outer surface reduces the friction of the tube body 3. The bottom guide column 7 and the top guide column 9 cooperate to guide the tube body 3 for conveying. The clamping seat 10 adjusts the opening degree through the screw 11 to accurately match the diameter of the tube body 3 and assist in clamping. Multiple sets of columns and clamping components work together to apply extrusion force to the tube body 3 and gradually correct the tube body 3. Finally, after the tube body 3 is guided and straightened in all directions, the drive motor 6 stops running, all clamping components are released, and the tube body 3 is straightened and output. This is the working principle of the multi-roller straightening mechanism of the tube bending machine.

Claims

1. A multi-roller straightening mechanism for a pipe bending machine, comprising a base frame (1) and a clamping and protective mechanism (2), characterized in that, The base frame (1) is fixedly connected to the top of a clamping and protective mechanism (2), and the clamping and protective mechanism (2) includes a nut seat (201) located on the inner surface of the base frame (1). The inner surface of the nut seat (201) is threaded with a double-segment threaded rod (202), and the top of the nut seat (201) is provided with a side clamping post (203). The outer surface of the side clamping post (203) is fixedly connected with a protective component (204), and the inner surface of the side clamping post (203) is connected with a positioning bolt (205).

2. The multi-roller straightening mechanism for a pipe bending machine according to claim 1, characterized in that, The outer surface of the side clamping column (203) is provided with a tube (3), and the top of the tube (3) is fixedly connected with a top guiding mechanism (4).

3. The multi-roller straightening mechanism for a pipe bending machine according to claim 2, characterized in that, The top guiding mechanism (4) includes a shock-absorbing seat (401) fixedly connected to the top position of the base frame (1), and a shock-absorbing rod (402) is fixedly connected to the top of the shock-absorbing seat (401). A fixed frame (403) is fixedly connected to the top of the shock-absorbing rod (402), and a moving block (404) is provided on the inner surface of the fixed frame (403). A top clamping column (405) is rotatably connected to one side of the moving block (404).

4. The multi-roller straightening mechanism for a pipe bending machine according to claim 1, characterized in that, The base frame (1) is fixedly connected to a fixed seat (5) at the top, and a drive motor (6) is fixedly connected to one side of the fixed seat (5).

5. A multi-roller straightening mechanism for a pipe bending machine according to claim 4, characterized in that, The output end of the drive motor (6) is fixedly connected to a bottom guide post (7), and a protective ring (8) is fixedly connected to the outer surface of the bottom guide post (7).

6. A multi-roller straightening mechanism for a pipe bending machine according to claim 5, characterized in that, The bottom guide post (7) is provided with a top guide post (9) at its top, and a clamping seat (10) is rotatably connected to one side of the top guide post (9).

7. A multi-roller straightening mechanism for a pipe bending machine according to claim 6, characterized in that, The inner surface of the clamping seat (10) is threaded with a lead screw (11), and the bottom of the base frame (1) is fixedly connected with a support frame (12).

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