Adjusting device and adjusting method for rolling stability of cold pilger mill
By using the upper roll rack and lower roll rack in conjunction with the synchronous gear on the cold rolling mill to fine-tune the roll angle and speed, the problem of the cold rolling mill's inability to make stepless adjustments was solved, and the stability of the rolling process and the efficient operation of the equipment were achieved.
Patent Information
- Application Number
- CN202510872752.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-27
- Publication Date
- 2025-09-12
AI Technical Summary
When the existing cold rolling mill adjusts the process by replacing gears with fixed teeth, it cannot achieve stepless adjustment, resulting in an unstable rolling process. Problems such as material carrying, pipe punching and large recoil are prone to occur, affecting the yield and equipment life.
The upper and lower roll racks are matched with synchronous gears. The angle and speed of the rolls are fine-tuned by synchronously adjusting the oil cylinder to achieve stepless gear adjustment and ensure the stability of the rolling process.
Through stepless gear adjustment technology, the frequency of gear replacement is reduced, the stability of the rolling process is improved, equipment vibration and wear are reduced, and production efficiency and finished product quality are improved.
Smart Images
Figure CN120619062A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of cold rolling mills, and in particular relates to a rolling stability adjustment device and an adjustment method for a cold rolling mill. Background Art
[0002] Two-roll cold rolling mills are key equipment in modern metal tube processing, specializing in the production of cold-rolled seamless tubes. They are widely used in the processing of tubes made from a variety of metal materials, particularly in stainless steel and carbon steel production lines. They are also the mainstay for seamless tubes made from non-ferrous metals such as titanium and copper alloys. The core advantage of this type of equipment lies in its precise control over the rolling process. To accommodate the rolling requirements of varying tube specifications (e.g., wall thickness and diameter) and different metal materials (e.g., differences in hardness and ductility), each two-roll cold rolling mill is typically equipped with two or three types of synchronized gears with varying tooth counts. These gears precisely coordinate the rotational speed of the rolls and the movement of the feed / return mechanism, ensuring a stable and coordinated rolling process, resulting in seamless tubes with high dimensional accuracy and excellent surface quality.
[0003] However, the current method of adjusting the process by replacing fixed-tooth gears has significant limitations. It lacks stepless adjustment of the tooth count and can only switch between a limited number of preset tooth combinations. This discrete adjustment often makes it difficult to find the ideal, perfectly matched tooth count combination for the complex and ever-changing production requirements. When the tooth count of the synchronous gears is not optimally matched to specific pipe materials (such as extremely thin wall thickness or special material properties) or specific rolling parameters (such as deformation and rolling speed), a series of process problems can easily arise. Common issues include "carrying" (abnormal engagement or dragging of the pipe by the rolls, resulting in surface damage or material accumulation); "pipe punching" (sudden changes in rolling force cause the pipe to be violently pushed out, damaging the equipment or product); and "high recoil" (the huge reverse impact force generated during the rolling process exacerbates equipment vibration and wear). These issues not only directly affect pipe yield and surface quality, reducing production efficiency, but also increase equipment maintenance burdens and operating costs, limiting full performance. Summary of the Invention
[0004] In view of the above problems, the purpose of the present invention is to provide a cold rolling mill rolling stability adjustment device and adjustment method, which realizes the function of the same gear having different rotation angles, reduces the frequency of gear replacement, and realizes rolling stability adjustment.
[0005] The top end face of the said sliding panel also is provided with an interlocking piece, and the interlocking piece is pivotally connected to the bottom end of the sliding panel, and the interlocking piece is pivotally connected to the bottom end of the sliding panel.
[0006] The bottoms of the rear rack seat and the front rack seat are provided with mounting plates, and the mounting plates are provided with a plurality of fixing holes.
[0007] The bottoms of the rear rack seat and the front rack seat are provided with mounting plates, and the mounting plates are also provided with a plurality of ribs.
[0008] The second slideway and the first slideway have the same structure and are arranged in parallel. The cross sections of the second slideway and the first slideway are both dovetail-shaped.
[0009] The rollers are rigidly connected to the first synchronous gear and the second synchronous gear respectively.
[0010] A method for adjusting the rolling stability of a cold rolling mill is provided, using the above-mentioned device for adjusting the rolling stability of a cold rolling mill, and comprises the following steps: S1, the lower roller rack is installed on the rear rack seat, and the lower roller rack is connected to the second synchronous adjustment cylinder. The lower roller rack can be moved forward and backward through the adjustment cylinder; S2, the upper roller rack is installed on the front rack seat, and the upper roller rack is connected to the first synchronous adjustment cylinder. The upper roller rack can be moved forward and backward by the adjustment cylinder; S3. The first synchronous gear is meshed with the upper roller rack, and the second synchronous gear is meshed with the lower roller rack to achieve synchronous rotation of the roller and the first synchronous gear and the second synchronous gear. When rolling is unstable, fine-tune the first synchronous adjustment cylinder and the second synchronous gear to achieve angle changes of the roller within the rolling stroke and adjust the rolling stability.
[0011] The technical effects of the present invention are: 1. The present invention combines the upper roller rack and the lower roller rack with the first synchronous gear and the second synchronous gear respectively, so that the gears and the rollers can rotate synchronously when the rollers and the gears reciprocate, and the tube blanks can be rolled; 2. When the present invention is used, the first synchronous adjustment cylinder and the second synchronous adjustment cylinder are used for fine adjustment to change the rotation angle and speed of the rollers during movement, and the effect of stepless tooth adjustment is achieved according to different rolling processes during rolling, thereby improving the problems of serious material carrying or large recoil during rolling, and realizing rolling stability adjustment.
[0012] The following is a further description with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of a rolling stability adjustment device of a cold rolling tube mill of the present invention.
[0014] Figure 2 It is a schematic diagram of the installation of the roller of the present invention.
[0015] Figure markings: 1-rear rack seat, 2-lower roller rack, 3-front rack seat, 4-roller, 5-first synchronous gear, 6-upper roller rack, 7-second synchronous adjustment cylinder, 8-first synchronous adjustment cylinder, 9-second synchronous gear, 10-second slide, 11-fixing hole, 12-rib plate, 13-first slide, 14-roller frame. DETAILED DESCRIPTION Example 1
[0016] like Figure 1 、 Figure 2 As shown, a cold rolling mill rolling stability adjustment device includes a rear rack seat 1 and a front rack seat 3 arranged in parallel. The middle part of the rear rack seat 1 is hollowed out, and a second slideway 10 is provided above the hollow side. The lower roll rack 2 is slidably connected to the second slideway 10, and a first slideway 13 is provided on the top of the front rack seat 3. The upper roll rack 6 is slidably connected to the first slideway 13. A rolling roller 4 is provided between the lower roll rack 2 and the upper roll rack 6. The rolling roller 4 is connected to a roll frame 14. A first synchronous gear 5 and a second synchronous gear 9 are respectively provided at both ends of the rolling roller 4. The first synchronous gear 5 and the upper roll rack 6 are meshed with each other, and the second synchronous gear 9 and the lower roll rack 2 are meshed with each other. A second synchronous adjustment cylinder 7 is also provided on the hollow side of the rear rack seat 1, and the output end of the second synchronous adjustment cylinder 7 is connected to the lower roll rack 2. A first synchronous adjustment cylinder 8 is also provided on one side of the top end face of the front rack seat 3, and the output end of the first synchronous adjustment cylinder 8 is connected to the upper roll rack 6.
[0017] When the present invention is in use, the lower roller rack 2 is installed on the rear rack seat 1, and the lower roller rack 2 is connected to the second synchronous adjustment cylinder 7, and the lower roller rack 2 can be moved forward and backward through the adjustment cylinder 7; the upper roller rack 6 is installed on the front rack seat 3, and the upper roller rack 6 is connected to the first synchronous adjustment cylinder 8, and the upper roller rack 6 can be moved forward and backward through the adjustment cylinder 7; the first synchronous gear 5 and the upper roller rack 6 are meshed with each other, and the second synchronous gear 9 and the lower roller rack 2 are meshed with each other, so that the rolling roller 4 and the first synchronous gear 5 and the second synchronous gear 9 rotate synchronously. When rolling is unstable, the first synchronous adjustment cylinder 8 and the second synchronous gear 9 are fine-tuned to realize the angle change of the rolling roller 4 within the rolling stroke, thereby realizing the adjustment of rolling stability. Example 2
[0018] On the basis of Example 1, in this embodiment, preferably, a mounting plate is provided at the bottom of the rear rack seat 1 and the front rack seat 3 , and a plurality of fixing holes 11 are provided on the mounting plate.
[0019] When the present invention is used, a mounting plate is provided at the bottom of the rear rack seat 1 and the front rack seat 3, and a plurality of fixing holes 11 are provided on the mounting plate, so that the device can be quickly installed and fixed by bolts. Example 3
[0020] On the basis of Example 1 or Example 2, in this embodiment, preferably, a mounting plate is provided at the bottom of the rear rack seat 1 and the front rack seat 3 , and a plurality of ribs 12 are further provided on the mounting plate.
[0021] When the present invention is used, a mounting plate is provided at the bottom of the rear rack seat 1 and the front rack seat 3, and a plurality of ribs 12 are provided on the mounting plate. The ribs 12 support the rear rack seat 1 and the front rack seat 3 to ensure the stability of the device. Example 4
[0022] On the basis of Example 1, in this embodiment, preferably, the second slide 10 and the first slide 13 have the same structure and are arranged in parallel, and the cross-sections of the second slide 10 and the first slide 13 are both dovetail-shaped.
[0023] When the present invention is used, the cross sections of the second slide 10 and the first slide 13 are both dovetail-shaped, ensuring the stability of the sliding connection between the second slide 10 and the lower roller rack 2, and the first slide 13 and the upper roller rack 6. Example 5
[0024] On the basis of Example 1, in this embodiment, preferably, the roller 4 is rigidly connected to the first synchronous gear 5 and the second synchronous gear 9 respectively.
[0025] When the present invention is used, the rollers 4 are rigidly connected to the first synchronous gear 5 and the second synchronous gear 9 respectively, ensuring that the gears and the rollers rotate synchronously when the rollers and the gears reciprocate to roll the tube blank. Example 6
[0026] A method for adjusting the rolling stability of a cold rolling mill is provided, using the above-mentioned device for adjusting the rolling stability of a cold rolling mill, and comprises the following steps: S1, the lower roller rack 2 is installed on the rear rack seat 1, and the lower roller rack 2 is connected to the second synchronous adjustment cylinder 7. The lower roller rack 2 can be moved forward and backward through the adjustment cylinder 7; S2, the upper roller rack 6 is installed on the front rack seat 3, and the upper roller rack 6 is connected to the first synchronous adjustment cylinder 8. The upper roller rack 6 can be moved forward and backward through the adjustment cylinder 7; S3, the first synchronous gear 5 and the upper roller rack 6 are engaged with each other, and the second synchronous gear 9 and the lower roller rack 2 are engaged with each other, so that the roller 4 and the first synchronous gear 5 and the second synchronous gear 9 rotate synchronously. When the rolling is unstable, the first synchronous adjustment cylinder 8 and the second synchronous gear 9 are fine-tuned to realize the angle change of the roller 4 within the rolling stroke and the adjustment of the rolling stability.
[0027] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.
Claims
1. A rolling stability adjustment device for a cold rolling mill, characterized in that: The invention comprises a rear rack seat (1) and a front rack seat (3) arranged in parallel, wherein the middle of the rear rack seat (1) is hollowed out, and a second slideway (10) is provided above the hollowed-out side, and a lower roller rack (2) is slidably connected to the second slideway (10), and a first slideway (13) is provided on the top of the front rack seat (3), and an upper roller rack (6) is slidably connected to the first slideway (13), and a roller (4) is provided between the lower roller rack (2) and the upper roller rack (6), and the roller (4) is connected to a roller frame (14), and both ends of the roller (4) are provided with A first synchronous gear (5) and a second synchronous gear (9), wherein the first synchronous gear (5) and the upper roller rack (6) are meshed with each other, and the second synchronous gear (9) and the lower roller rack (2) are meshed with each other. A second synchronous adjustment oil cylinder (7) is further provided on the hollow side of the rear rack seat (1), and the output end of the second synchronous adjustment oil cylinder (7) is connected to the lower roller rack (2). A first synchronous adjustment oil cylinder (8) is further provided on one side of the top end surface of the front rack seat (3), and the output end of the first synchronous adjustment oil cylinder (8) is connected to the upper roller rack (6).
2. The rolling stability adjustment device for a cold rolling mill according to claim 1, characterized in that: The bottoms of the rear rack seat (1) and the front rack seat (3) are provided with mounting plates, and the mounting plates are provided with a plurality of fixing holes (11).
3. The rolling stability adjustment device for a cold rolling mill according to claim 1, characterized in that: The bottoms of the rear rack seat (1) and the front rack seat (3) are provided with mounting plates, and the mounting plates are further provided with a plurality of ribs (12).
4. The rolling stability adjustment device for a cold rolling mill according to claim 1, characterized in that: The second slideway (10) and the first slideway (13) have the same structure and are arranged in parallel. The cross sections of the second slideway (10) and the first slideway (13) are both dovetail-shaped.
5. The rolling stability adjustment device for a cold rolling mill according to claim 1, characterized in that: The rollers (4) are rigidly connected to the first synchronous gear (5) and the second synchronous gear (9), respectively.
6. A method for adjusting the rolling stability of a cold rolling mill, using the device for adjusting the rolling stability of a cold rolling mill as claimed in claim 1, characterized in that: The following steps are involved: S1, the lower roller rack (2) is installed on the rear rack seat (1), the lower roller rack (2) is connected to the second synchronous adjustment cylinder (7), and the lower roller rack (2) can be moved forward and backward through the adjustment cylinder (7); S2, the upper roller rack (6) is installed on the front rack seat (3), the upper roller rack (6) is connected to the first synchronous adjustment cylinder (8), and the upper roller rack (6) can be moved forward and backward through the adjustment cylinder (7); S3, the first synchronous gear (5) and the upper roller rack (6) are meshed with each other, and the second synchronous gear (9) and the lower roller rack (2) are meshed with each other, so that the roller (4) and the first synchronous gear (5) and the second synchronous gear (9) can rotate synchronously. When rolling is unstable, the first synchronous adjustment cylinder (8) and the second synchronous gear (9) are fine-tuned to achieve the angle change of the roller (4) within the rolling stroke, thereby achieving the adjustment of rolling stability.