Pipe deviation rectifying device of cold pilger mill
By introducing an electric motor-driven guide roller device into the cold rolling mill, the problem of pipe misalignment during rolling was solved, the rolling quality and equipment practicality were improved, and the mechanical properties of the pipe were ensured.
Patent Information
- Application Number
- CN202520353787.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-03
AI Technical Summary
Existing cold rolling mills are prone to misalignment when the tubes enter the mill, causing the tubes to be out of concentricity with the rolls, which affects the rolling quality and the mechanical properties of the tubes.
A pipe alignment device for a cold rolling mill was designed, including an electric motor, a first guide roller, and a second guide roller. The second guide roller is driven to rotate by the electric motor, and the position of the pipe is adjusted by the force of the first guide roller to avoid deviation.
This effectively prevents the pipe from shifting when entering the conveyor rollers, improves rolling quality and equipment flexibility, and ensures the mechanical properties and performance of the pipe.
Smart Images
Figure CN223789202U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metal rolling technology, and in particular to a pipe fitting correction device for a cold rolling mill. Background Technology
[0002] A cold rolling mill is a piece of equipment used for the cold working of metal tubes. It primarily uses cold rolling to plastically deform metal tubes, altering their diameter, wall thickness, inner hole shape, and surface quality. Cold rolling mills play a crucial role in metal tube production and are widely used in manufacturing various specifications of precision steel tubes, stainless steel tubes, and alloy steel tubes.
[0003] The cold rolling mill includes a main machine, a feeding device, a guiding device, a cutting device, and a control system. The main machine, including the frame, rolls, and transmission device, is the core part of the cold rolling mill and is responsible for rolling the tubes. The feeding device sends the tubes to be rolled into the main machine and usually includes a material rack and a feeding roller table.
[0004] In existing cold rolling mills, the tubes to be rolled are placed on a feeding device and fed into the main machine via a feeding roller conveyor. The rollers in the main machine rotate and compress the tubes, causing them to undergo plastic deformation in a cold state, changing their diameter, wall thickness, and inner hole shape. However, the tubes are prone to misalignment when entering the mill, resulting in the tubes not being concentric with the rollers, which affects the rolling quality. At the same time, tube misalignment leads to uneven stress on different parts of the tubes during the rolling process, which can easily cause uneven wall thickness, affecting the mechanical properties and performance of the tubes. Utility Model Content
[0005] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a pipe fitting correction device for cold rolling mills. This device can solve the problem that the pipe is prone to deviation when entering the rolling mill, which causes the pipe to be misaligned with the rolls, thus affecting the rolling quality. At the same time, the pipe deviation causes uneven stress on various parts of the pipe during the rolling process, which can easily lead to uneven wall thickness and affect the mechanical properties and performance of the pipe.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a pipe fitting correction device for a cold rolling mill, comprising a roller conveyor body and a support frame, wherein the correction device is provided on the support frame;
[0007] The correction device includes a motor, a first guide roller and a second guide roller. The two ends of the second guide roller are rotatably connected to the inner sides of the lower end of the support frame. The inner walls of the upper ends of the support frame are provided with slider grooves. Sliders are slidably connected inside the two slider grooves. Rotary threaded rods are threadedly connected to the upper ends of both sides of the support frame.
[0008] The motor is fixedly connected to the upper surface of the fixed plate on one side of the support frame. The outer wall of the opposite side of the two sliders is provided with a first arc groove. The bearings at both ends of the first guide roller are respectively installed inside the corresponding first arc groove. Two T-shaped block grooves are opened on the outer wall of one end of the roller conveyor body. The outer walls of the two T-shaped blocks on the lower side of the support frame are respectively slidably connected to the interior of the corresponding T-shaped block groove.
[0009] Preferably, the upper end of the support frame is U-shaped, and the end of the rotating threaded rod near the slider is threaded into the inside of the slider groove and rotatably connected to the upper surface of the corresponding slider respectively. The outer wall of the second guide roller is provided with multiple placement grooves.
[0010] The output end of the motor rotates and extends into the interior of the slider groove and is fixedly connected to one end of the second guide roller. The outer wall of the first guide roller is provided with a plurality of placement grooves, and the placement grooves on the second guide roller are opposite to the placement grooves on the first guide roller.
[0011] Preferably, a plurality of conveying rollers are installed on the upper surface of the roller conveyor body, and the plurality of conveying rollers are used in conjunction with the drive device on the roller conveyor body;
[0012] Two second fixing bolt slots are provided on one side of the outer wall of the roller conveyor body.
[0013] Preferably, the outer walls of the two protrusions at the lower end of the support frame are threaded with second fixing bolts, and the ends of the two second fixing bolts near the second fixing bolt grooves extend threadedly to the outside of the protrusions and are respectively threadedly connected to the inner threads of the corresponding second fixing bolt grooves.
[0014] Each of the two first arc-shaped grooves has a fixed mounting block that is slidably connected inside.
[0015] Preferably, the fixed mounting block is T-shaped, and two first fixing bolt grooves are provided on the upper surface of both sliders;
[0016] The lower surfaces of the two fixed mounting blocks are provided with second arc-shaped grooves, and the bearings at both ends of the first guide roller are respectively placed inside the corresponding second arc-shaped grooves.
[0017] Preferably, the interiors of the two first arc-shaped grooves respectively mate with the interiors of the corresponding second arc-shaped grooves, and the upper surfaces of the two fixed mounting blocks are each threaded with two first fixing bolts;
[0018] Among them, the ends of the four first fixing bolts near the first fixing bolt grooves are all threaded to the outside of the upper end of the fixing block and are respectively connected to the internal threads of the first fixing bolt grooves.
[0019] Compared with the prior art, the beneficial effects of this utility model are:
[0020] 1. The cold rolling mill fitting correction device uses external auxiliary equipment to feed the coffin into the feeding channel formed by the placement grooves on the first and second guide rollers. Then, the output end of the motor rotates, driving the second guide roller to rotate, and the force generated by the coffin on the first guide roller also rotates it. This prevents the coffin from deviating when entering the conveying roller, effectively avoiding the impact of misalignment between the pipe and the rolls on the rolling quality. At the same time, it improves the practicality and flexibility of the equipment, and avoids affecting the mechanical properties and performance of the pipe. Attached Figure Description
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0023] Figure 2 This is a schematic diagram of the external structure of the first guide roller of this utility model I;
[0024] Figure 3 This is a schematic diagram of the internal structure of the support frame of this utility model;
[0025] Figure 4 This utility model Figure 3 A structural schematic diagram of the enlarged view at point A in the middle.
[0026] Reference numerals in the attached drawings: 1. Main body of the roller conveyor; 2. Conveying roller; 3. First guide roller; 4. Fixed mounting block; 5. First fixing bolt; 6. Second guide roller; 7. Rotating threaded rod; 8. Support frame; 9. Motor; 10. Slider groove; 11. T-block groove; 12. Slider; 13. First fixing bolt groove; 14. First arc groove; 15. Second arc groove; 16. Second fixing bolt groove; 17. Second fixing bolt. Detailed Implementation
[0027] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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.
[0029] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.
[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0031] Please see Figure 1-4 This utility model provides a technical solution: a pipe fitting correction device for a cold rolling mill, comprising a roller conveyor body 1 and a support frame 8;
[0032] The support frame 8 is equipped with a correction device;
[0033] The correction device includes a motor 9, a first guide roller 3, and a second guide roller 6. The upper end of the support frame 8 is U-shaped. The two ends of the second guide roller 6 are rotatably connected to the inner sides of the lower end of the support frame 8. Sliding grooves 10 are provided on the inner walls of both sides of the upper end of the support frame 8. Sliding sliders 12 are slidably connected inside the two sliding grooves 10. Rotating threaded rods 7 are threadedly connected to the upper ends of both sides of the support frame 8. The ends of the rotating threaded rods 7 near the sliding sliders 12 extend threadedly into the sliding grooves 10 and are rotatably connected to the upper surfaces of the corresponding sliding sliders 12. The motor 9 is fixedly connected to the upper surface of a fixing plate on one side of the support frame 8. The outer wall of the second guide roller 6 is provided with… Multiple placement slots are provided. The output end of the motor 9 extends into the interior of the slider slot 10 and is fixedly connected to one end of the second guide roller 6. The outer wall of the opposite side of the two sliders 12 is provided with a first arc-shaped slot 14. The bearings at both ends of the first guide roller 3 are respectively installed inside the corresponding first arc-shaped slot 14. The outer wall of the first guide roller 3 is provided with the same multiple placement slots. The placement slots on the second guide roller 6 are opposite to the placement slots on the first guide roller 3. Two T-shaped block slots 11 are opened on the outer wall of one end of the roller conveyor body 1. The outer walls of the two T-shaped blocks on one side of the lower end of the support frame 8 are respectively slidably connected to the interior of the corresponding T-shaped block slots 11.
[0034] The roller conveyor body 1 has multiple conveying rollers 2 mounted on its upper surface. These rollers 2 work in conjunction with a drive unit on the roller conveyor body 1. Two second fixing bolt grooves 16 are formed on one outer wall of the roller conveyor body 1. Two second fixing bolts 17 are threaded onto the outer walls of the two protrusions at the lower end of the support frame 8. The ends of the two second fixing bolts 17 near the second fixing bolt grooves 16 extend threadedly to the outside of the protrusions and are respectively threaded into the corresponding second fixing bolt grooves 16. Fixing blocks 4 are slidably connected to the interior of the two first arc-shaped grooves 14. The fixing blocks 4 are T-shaped. The two sliders 12 each have two first fixing bolt grooves 13 on their upper surfaces, and the two fixed mounting blocks 4 each have a second arc-shaped groove 15 on their lower surfaces. The bearings at both ends of the first guide roller 3 are respectively placed inside the corresponding second arc-shaped groove 15. The interiors of the two first arc-shaped grooves 14 respectively mate with the interiors of the corresponding second arc-shaped grooves 15. The upper surfaces of the two fixed mounting blocks 4 are each threaded with two first fixing bolts 5. The ends of the four first fixing bolts 5 near the first fixing bolt grooves 13 are threaded to the outside of the upper end of the fixed mounting block 4 and are respectively threaded to the interior of the first fixing bolt grooves 13.
[0035] Furthermore, when using this device, it is started by connecting to an external power source. Firstly, turning the threaded rod 7 rotates it up and down, simultaneously moving the slider 12 up and down. Then, the slider 12 moves up and down, causing the first guide roller 3 to move up and down for adjustment. This adjusts the height of the first guide roller 3 according to the coffin. Then, using external auxiliary equipment, the coffin is fed into the feeding channel formed by the placement grooves on the first guide roller 3 and the second guide roller 6. Next, the output of the motor 9 rotates, driving the second guide roller 6 to rotate, while the force exerted by the coffin on the first guide roller 3 also rotates it. This prevents the coffin from moving when entering the conveyor roller 2. To prevent deviation, the drive device on the main body 1 of the roller conveyor drives the conveyor roller 2 to carry the coffin into the cold rolling mill. When it is necessary to remove the first guide roller 3, the first fixing bolt 5 is turned to rotate so that the outer wall of its other end is disengaged from the inside of the first fixing bolt groove 13. Then, the fixing block 4 is pulled to remove it from the inside of the first arc groove 14. Then, the first guide roller 3 can be removed from the inside of the first arc groove 14. When it is necessary to remove the correction device, the second fixing bolt 17 is turned to rotate so that the outer wall of its other end is disengaged from the inside of the second fixing bolt groove 16. Then, the support frame 8 is pulled to remove it from the main body 1 of the roller conveyor.
[0036] The coffin is fed into the feeding channel formed by the placement grooves on the first guide roller 3 and the second guide roller 6 through the external auxiliary equipment in the correction device. Then, the output end of the motor 9 rotates to drive the second guide roller 6 to rotate, and at the same time, the force generated by the coffin on the first guide roller 3 also rotates. This avoids the coffin from deviating when entering the conveying roller 2. This effectively avoids the pipe and the roller from being misaligned, which would affect the rolling quality. At the same time, it improves the practicality and flexibility of the equipment, and avoids affecting the mechanical properties and performance of the pipe.
[0037] Structural Description: Roller Conveyor Body 1: As the main body of the entire conveying system, it is responsible for supporting and driving the conveying rollers 2, providing a stable support platform and ensuring the stability and accuracy of the pipes during the conveying process;
[0038] Conveying roller 2: Installed on the main body 1 of the roller conveyor, driven to rotate by a drive device, used to convey pipes, and closely cooperates with the main body 1 of the roller conveyor to ensure continuous and stable conveying of pipes;
[0039] First guide roller 3: The height can be adjusted up and down to guide the pipe into the conveying channel and prevent deviation. It is connected to the rotating threaded rod 7 through the slider 12. The flexible connection with the slider 12 realizes the height adjustability, ensuring that the pipe can accurately enter the conveying channel and improve the correction effect.
[0040] Fixed mounting block 4: Used to fix the first guide roller 3 and ensure its stability. It is connected to the first arc groove 14 through the first fixing bolt 5. The tight fit between the first guide roller 3 and the first arc groove 14 ensures the stability of the first guide roller 3 after the height is adjusted, and at the same time facilitates disassembly and maintenance.
[0041] First fixing bolt 5: used to fix the fixing block 4 in the first arc groove 14, realizing a fast and reliable fixing method, and facilitating the height adjustment and disassembly of the first guide roller 3;
[0042] The second guide roller 6, in conjunction with the first guide roller 3, forms a feeding channel and is driven to rotate by the motor 9. The direct connection with the motor 9 ensures the active rotation of the second guide roller 6, further improving the guiding effect of the pipe.
[0043] Rotating the threaded rod 7: By rotating, the slider 12 moves up and down, thereby adjusting the height of the first guide roller 3. The threaded connection of the slider 12 enables precise height adjustment and improves the flexibility of the correction device.
[0044] Support frame 8: Used to support the entire correction device and ensure its stability. It is connected to the roller conveyor body 1 by the second fixing bolt 17. The tight fit with the roller conveyor body 1 ensures the overall stability of the correction device, while also facilitating disassembly and relocation.
[0045] Electric motor 9: Provides power to drive the second guide roller 6 to rotate. The direct connection with the second guide roller 6 ensures efficient power transmission and improves the conveying efficiency of the pipe.
[0046] Slider 12: Connected to the rotating threaded rod 7, it moves up and down to drive the first guide roller 3 to adjust the height. The flexible connection with the rotating threaded rod 7 enables precise height adjustment and improves the applicability of the correction device.
[0047] Second fixing bolt groove 16: Located on the support frame 8 or related structure, it is used to accommodate the second fixing bolt 17. The tight fit with the second fixing bolt 17 ensures the stability of the support frame 8.
[0048] The second fixing bolt 17 is used to fix the support frame 8 to the main body 1 of the roller conveyor, realizing a fast and reliable fixing method, which facilitates the overall disassembly and movement of the correction device;
[0049] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A pipe straightening device for a cold pilger mill, comprising a roller conveyor body (1) and a support frame (8), characterized in that: The support frame (8) is provided with a deviation rectifying device; The deviation rectifying device comprises a motor (9), a first guide roller (3) and a second guide roller (6), the two ends of the second guide roller (6) are rotatably connected to the inner sides of the two sides of the lower end of the support frame (8), the upper end of the support frame (8) is provided with a sliding block groove (10) on the inner wall of each side, the inner sides of the two sliding block grooves (10) are slidably connected with a sliding block (12), and the upper end of each side of the support frame (8) is threadedly connected with a rotating threaded rod (7). The motor (9) is fixedly connected to the upper surface of the fixed plate on one side of the support frame (8), the outer walls of the opposite sides of the two sliding blocks (12) are each provided with a first arc-shaped groove (14), the two end bearings of the first guide roller (3) are respectively arranged in the corresponding first arc-shaped grooves (14), and the outer wall of one end of the roller conveyor body (1) is provided with two T-shaped block grooves (11).
2. A pipe straightening device for a cold roll pipe mill as defined in claim 1 wherein: The upper end of the support frame (8) is in a "U" shape, one end of the rotating threaded rod (7) close to the sliding block (12) is threadedly extended into the sliding block groove (10) and is rotatably connected to the upper surface of the corresponding sliding block (12), and the outer wall of the second guide roller (6) is provided with a plurality of placing grooves. The output end of the motor (9) is rotatably extended into the sliding block groove (10) and is fixedly connected to one end of the second guide roller (6), the outer wall of the first guide roller (3) is provided with the same number of placing grooves, and the positions of the placing grooves on the second guide roller (6) are opposite to those of the placing grooves on the first guide roller (3).
3. A pipe straightening device for a cold roll pipe mill as defined in claim 1 wherein: A plurality of conveying rollers (2) are arranged on the upper surface of the roller conveyor body (1) and are used in cooperation with the driving device on the roller conveyor body (1). The outer wall of one side of the roller conveyor body (1) is provided with two second fixed bolt grooves (16).
4. A pipe straightening device for a cold roll pipe mill as defined in claim 1 wherein: The outer walls of the two protrusions at the lower end of the support frame (8) are each threadedly connected with a second fixed bolt (17), one end of the two second fixed bolts (17) close to the second fixed bolt grooves (16) is threadedly extended to the outside of the protrusion and is threadedly connected to the inner side of the corresponding second fixed bolt groove (16). The inner sides of the two first arc-shaped grooves (14) are each slidably connected with a fixed mounting block (4).
5. A pipe straightening device for a cold roll pipe mill as defined in claim 4 wherein: The fixed mounting block (4) is in a "T" shape, and the upper surfaces of the two sliding blocks (12) are each provided with two first fixed bolt grooves (13). The lower surfaces of the two fixed mounting blocks (4) are each provided with a second arc-shaped groove (15), and the two end bearings of the first guide roller (3) are respectively arranged in the inner sides of the corresponding second arc-shaped grooves (15).
6. A pipe straightening device for a cold roll pipe mill as defined in claim 1 wherein: The inner sides of the two first arc-shaped grooves (14) are respectively matched with the inner sides of the corresponding second arc-shaped grooves (15), and the upper surfaces of the two fixed mounting blocks (4) are each threadedly connected with two first fixed bolts (5). One end of the four first fixed bolts (5) close to the first fixed bolt grooves (13) is threadedly extended to the outer side of the upper end of the fixed mounting block (4) and is threadedly connected to the inner side of the corresponding first fixed bolt groove (13).