Steel rolling box type finishing mill outlet rolling guide and guard device
By installing a rolling guide device at the exit of the box-type finishing mill and adjusting the opening of the guide rollers, the problem of large-diameter wire rods swaying in the finished product stand was solved, thereby improving product accuracy and yield.
Patent Information
- Application Number
- CN202520625911.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-04-03
AI Technical Summary
Large-diameter wires swing left and right within the guide device of the finished product rack, causing dimensional fluctuations that are difficult to control and affect product accuracy and yield.
The rolling guide device at the exit of the box-type finishing mill is adopted, which includes the box, left and right eccentric roller shafts, worm gear, guide roller, bearing, cooling water and oil-gas interface. The opening of the guide roller is adjusted by the worm gear to increase the clamping points to stabilize the rolled workpiece and reduce vibration.
It effectively solved the problem of wire size fluctuation within the finished product rack, improving product size accuracy and yield.
Smart Images
Figure CN223960326U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a rolling guide device at the outlet of a box-type finishing mill for steel rolling, belonging to the field of metallurgical technology. Background Technology
[0002] High-speed wire rod finishing mills generally employ an elliptical-round pass system. Large-diameter wire rods (Ф16-Ф25mm) are finished products from this finishing mill. The finishing stand is the K1 mill, and the pre-pass stand is the K2 mill. Roll guides are used for all finished products. The dimensional fluctuations in large-diameter Ф16-Ф25mm wire rods are mainly manifested in the inconsistent width of the two roll seam lines on the wire surface. Although there is no obvious periodicity, there is a certain degree of complementarity: when one roll seam line is wider, the other is narrower; conversely, when one is narrower, the other is wider. This phenomenon leads to large dimensional deviations in the middle roll seam position of the finished product, resulting in numerous ear-like defects at the beginning and end.
[0003] The dimensional fluctuations of large-diameter wire rods are caused by the swaying of the elliptical rolled piece within the guide device of the finished product stand. The original Morgan process used a finishing mill with poor vibration resistance for the two-roll rolling guide device. Therefore, once the rolled piece between the K1 and K2 mills vibrates, the two-roll rolling guide support arm moves up and down alternately, making it difficult to control the finished product dimensions.
[0004] Reducing or eliminating workpiece vibration is key to improving dimensional accuracy. Considering that replacing the finished product stand guides with 4-roll or 6-roll guides requires moving the guide base position backward, and that technical modifications to the roll box panel would have a significant impact on the equipment, it is necessary to modify the exit guide device of the K2 stand. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a rolling guide device at the exit of a box-type finishing mill, which effectively solves the dimensional fluctuations caused by the left and right swinging of large-diameter wire rods in the finished product stand guide device, improves product dimensional accuracy, and increases yield.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0007] A rolling guide device for the exit of a box-type finishing mill includes a box, left and right eccentric roller shafts, a worm gear, guide rollers, bearings, a cooling water interface, an oil-gas interface, and locking bolts. An inlet guide plate is installed at the inlet end of the box and locked with locking bolts to prevent it from retracting from the box. A cooling water interface is installed at the outlet end of the box, allowing external cooling water to cool the guide rollers. Bearings are installed on both sides of the guide rollers. The guide rollers and bearings are connected to the outlet sides of the box via the left and right eccentric roller shafts. Oil-gas interfaces are installed at the ends of the left and right eccentric roller shafts, allowing external oil-gas to lubricate the bearings. The worm gear is installed at a 90° angle perpendicular to the left and right eccentric roller shafts at the outlet end of the box, forming a worm gear adjustment device. The opening degree of the guide rollers can be adjusted by rotating the worm gear.
[0008] As a preferred embodiment, the inlet guide plate consists of two identical inlet semi-guide plates.
[0009] As a preferred embodiment, the worm gear is fastened with bolts to prevent it from rotating.
[0010] Beneficial effects: Compared with the prior art, this utility model replaces the sliding guide at the exit of the finishing mill front hole stand with a rolling guide at the exit. By increasing the clamping point of the rolling guide at the exit of the finishing mill front hole stand and working together with the rolling guide of the finishing mill stand, it can effectively solve the dimensional fluctuations caused by the left and right swing of large-diameter wire rods in the finishing mill stand guide device, improve product dimensional accuracy, and increase yield.
[0011] This invention originates from the problem that when rolling large-diameter wire rods in a high-speed wire rod finishing mill, the rolled piece vibrates between the K1 and K2 stands, and the elliptical rolled piece undergoes alternating vertical displacement on the two-roll rolling guide support arm of the finishing stand, resulting in dimensional fluctuations in the finished product and numerous head and tail defects. By adding a rolling guide clamping point at the exit of the finishing stand and working in conjunction with the rolling guide of the finishing stand, the problem of dimensional fluctuations in large-diameter finished products caused by the rolling piece vibration between K2 and K1 of the high-speed wire rod finishing mill is solved, improving the accuracy of the rolled piece and increasing the yield. Practice has proven that this exit rolling guide device has a good vibration reduction effect. After its implementation, the roll seam lines on the surface of large-diameter wire rods are straight, and the phenomenon of inconsistent width is completely eliminated, improving product dimensional accuracy and yield. Attached Figure Description
[0012] Figure 1 This is the main view structural diagram of this utility model;
[0013] Figure 2 This is a side view of the structure of this utility model;
[0014] Figure 3 This is a top view of the structure of this utility model.
[0015] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following describes in detail the specific implementation methods, structures, features and effects of this utility model in conjunction with the accompanying drawings and preferred embodiments. Detailed Implementation
[0016] Example 1: As Figure 1 As shown, a rolling guide device for the outlet of a box-type finishing mill includes an inlet guide plate 2, left and right eccentric roller shafts 3, a worm gear 4, guide rollers 5, bearings 6, a cooling water interface 7, an oil and gas interface 8, bolts 9, and locking bolts 10. The inlet guide plate 2 is installed at the inlet end of the box 1 and locked on all four sides by the locking bolts 10 to prevent it from exiting the box 1. Bearings 6 are installed on both sides of the guide rollers 5. The guide rollers 5 and bearings 6 are connected to the outlet sides of the box 1 by the left and right eccentric roller shafts 3. The oil and gas interfaces 8 are installed at the ends of the left and right eccentric roller shafts 3. The worm gear 4 is installed at a 90° angle perpendicular to the left and right eccentric roller shafts 3 at the outlet end of the box 1, forming a worm gear adjustment device. The opening of the guide rollers 5 can be adjusted by rotating the worm gear 4. The worm gear 4 is secured by bolts 9 to prevent rotation. A cooling water interface 7 is installed at the outlet end of the box 1.
[0017] Working principle:
[0018] Step 1: The inlet guide plate 2 consists of two identical inlet semi-guide plates. Insert the inlet guide plate 2 into the reserved installation position inside the inlet end of the guide box 1 and tighten it with locking bolts 10.
[0019] Step 2: Install bearings 6 on both sides of the two guide rollers 5 respectively.
[0020] Step 3: Pass the worm gear 4 through the reserved position at the outlet end of the guide box 1 and tighten it with a nut to prevent it from coming out.
[0021] Step 4: Place the guide roller 5 in the pre-reserved installation position at the outlet end of the guide box 1. Connect the guide roller 5 and the box 1 with the left and right eccentric roller shafts 3 respectively, passing through the guide roller 5, and tighten them with nuts. The left and right eccentric roller shafts 3 are connected perpendicularly to the worm gear 4 at 90° to form a worm gear adjustment device. Adjust the opening degree of the guide roller 5 by rotating the worm gear 4. After confirming the opening degree, tighten it with bolts 9 to prevent the worm gear 4 from rotating.
[0022] Step 5: Install the oil-gas interface 8 on the guide roller shaft and connect the external oil-gas supply to lubricate the bearing 6.
[0023] Step 6: Install the cooling water interface 7 on the guide box and cool the guide roller 5 with external cooling water.
[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A rolling guide device for the exit of a finishing rolling box-type mill, characterized in that: The utility model relates to a kind of cooling device of papermaking, including box (1), left and right eccentric roller shaft (3), worm (4), guide roller (5), entrance guide plate (2) is installed in the box (1) entrance end, cooling water interface (7) is installed in the box (1) outlet end;Bearing (6) is installed in the two sides of guide roller (5), and the guide roller (5) and bearing (6) are installed in the two sides of the box (1) outlet by left and right eccentric roller shaft (3);Oil-gas interface (8) is installed in the left and right eccentric roller shaft (3) end, worm gear adjusting device is installed in the box (1) outlet end with left and right eccentric roller shaft (3) 90 ° perpendicular, and it is adjusted by rotating worm (4) that guide roller (5) opening degree can be adjusted.
2. A rolling guide device for the exit of a finishing mill in a housing type rolling mill according to claim 1, characterized in that The entrance guide plate (2) is composed of two identical entrance half guide plates.
3. A rolling guide device for the exit of a finishing mill in a housing, according to claim 1, characterized in that The entrance guide plate (2) is fixedly connected to the box (1) by locking bolts (10).
4. A rolling guide device for the exit of a finishing mill in a housing type rolling mill according to claim 1, characterized in that The worm (4) is fastened by bolts (9) to prevent the worm (4) from rotating.