High-speed wire rod pre-finish rolling module unit
By using independently driven import and export brackets in high-speed wire pre-finishing mills, abolishing the gear combination, and adding snap shears and speed change mechanisms, the problems of large number of rolling mills and inconcentrated rolling forces in traditional pre-finishing mills are solved. , achieving the effect of low equipment failure rate, reduced maintenance cost and accurate adjustment of steel rolling process.
Patent Information
- Application Number
- CN202311046964.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-20
- Publication Date
- 2025-02-21
AI Technical Summary
Traditional high-speed wire pre-finishing mills have problems such as large number of rolling mills, inconcentrated rolling force, high maintenance costs, high equipment accident rate and inaccurate adjustment of the rolling process ratio.
A high-speed wire pre-finishing mill module unit with simplified structure is adopted. By setting up independent import frames and outlet frames, each frame is driven by an independent motor, the gear combination is cancelled, and the steel bar jamming and shearing mechanism and speed change mechanism are added to Achieve accurate adjustment of the number of steel rolling process ratio.
It achieves low equipment failure rate, reduced maintenance cost, concentrated rolling force, and accurate adjustment of steel rolling process ratio, avoids steel stacking or steel pulling, and improves operating rate and equipment reliability.
Smart Images
Figure CN119489093A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of high-speed wire rolling mills, and in particular relates to a high-speed wire pre-finishing rolling mill module unit. Background Art
[0002] The rolling process of high-speed wire rods includes rough rolling, finishing rolling and pre-finishing rolling between the two. That is, an over-rolling process is set before finishing rolling, the purpose of which is to reduce the outer diameter of the rolled steel bar and reduce the load on the equipment entering the finishing rolling area.
[0003] Conventional pre-finishing mills such as Figure 1 As shown, it includes two horizontal rolling mills 11, 12 and two vertical rolling mills 21, 22 which are alternately arranged and driven by their corresponding motor mechanisms 011, 012, 021 and 022, and a vertical looper 00 arranged between adjacent rolling mills, and the adjacent rolling mills are alternately arranged at 90 degrees to complete the pre-finishing rolling process of the wire after rough rolling; the pre-finishing rolling mill group of this structure (referred to as: 90-degree alternating mode) has a large number of rolling mills. When implementing pre-finishing rolling, due to the dispersed arrangement of its four rolling mills 11, 21, 12 and 22, the rolling force on the wire is not concentrated, and there are defects of high on-site maintenance cost and difficulty in maintenance. In order to overcome the setting defects of the pre-finishing rolling mill group of the above structure, it is improved as follows Figure 2 The transmission input shaft 30 shown is driven by a motor mechanism 33 and driven by a gear assembly 34 (such as Figure 3 The imported train 31 and (as shown in the figure) are composed of the imported train transition shaft system 311 and the passive shaft system 312 which is at an angle of 45 degrees thereto. Figure 4 The concentrated traditional module structure of 45-degree staggered hybrid angle (abbreviated as: one-to-two mode) composed of the export train transition shaft system 321 and the passive shaft system 322 with a 45-degree angle therewith is shown; that is, the steel bars are pre-finished rolled by the roller shaft 313 of the roller box driven by the passive shaft system 312 of the import train and the roller shaft 323 of the roller box driven by the passive shaft system 322 of the export train.
[0004] Although the module of this structure has the characteristics of compact structure and can realize the concentrated rolling force of wire rod, it has the following defects: First, due to the centralized transmission of two sets of transmission driven by a transmission input shaft through a plurality of gear combinations 34, the motor and the module rolling mill are subject to heavy load and high equipment accident rate; second, once an internal part is damaged, the entire module has to be taken offline, resulting in the termination of production of the entire line; third, due to the large number of gears in the shaft system and gear combination, the cost is high; fourth, centralized transmission makes it inconvenient to maintain and operate on site. When rolling steel of different specifications, the ratio of the rolling process numbers of the import and export sets is not accurately adjusted, which can easily lead to steel piling or pulling, increase maintenance costs, and affect the operating rate; fifth, if the use effect of one set is not ideal, it will affect the use of the other set, resulting in problems such as large vibration, noise, and unconcentrated load. Summary of the invention
[0005] The object of the present invention is to provide a high-speed wire rod pre-finishing mill module unit with a simplified structure and a low equipment failure rate.
[0006] To achieve the above purpose, the technical solution adopted by the present invention is: A high-speed wire rod pre-finishing mill module unit, characterized in that it includes an import rack and an export rack arranged in a box with a steel bar inlet and a steel bar outlet. The steel bars pass through the steel bar inlet and are reduced in diameter by the import rack and the export rack to complete pre-finishing rolling and are then sent out from the steel bar outlet; wherein the input shaft system constituting the import rack is driven by the import rack motor, and the input shaft system constituting the export rack is driven by the export rack motor.
[0007] Additional technical features constituting the above-mentioned high-speed wire rod pre-finishing mill module unit also include: 1. A steel bar clamping and shearing mechanism is provided at the steel bar inlet constituting the box body; 2. An import rack speed change mechanism is provided between the import rack motor and the import rack motor, and an export rack speed change mechanism is provided between the export rack motor and the export rack motor.
[0008] Compared with the prior art, the high-speed wire rod pre-finishing mill module unit provided by the present invention has the following advantages: First, since the inlet rack and the outlet rack in the box are driven by the inlet rack motor and the outlet rack motor respectively, the connectivity between the inlet rack and the outlet rack is eliminated, and the two are independent of each other, thus not only eliminating the need for the prior art Figure 2The gear combination 34 connecting the two as shown in the figure simplifies the structure, reduces the motor load, and thus reduces the equipment accident rate. At the same time, even if an accident occurs in a certain train constituting the module, the accident train can be left behind to continue production. Secondly, when rolling steel bars of different specifications, the steel rolling process ratio of the inlet and outlet trains can be accurately adjusted, which can effectively avoid the phenomenon of steel piling or steel pulling, reduce maintenance costs, and improve operating rates. Thirdly, even if the use effect of one train is not ideal, it will not affect the use of another train, effectively overcoming the problems of large vibration, chaotic noise, and unconcentrated load. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a schematic diagram of the structure of the first generation of conventional pre-finishing mill; Figure 2 It is a schematic diagram of the structure of the second generation conventional pre-finishing mill group; Figure 3 To constitute Figure 2 The structural schematic diagram of the import train of the pre-finishing rolling module unit shown; Figure 4 To constitute Figure 2 The structural schematic diagram of the export train of the pre-finishing rolling module unit shown; Figure 5 A structural schematic diagram of a high-speed wire rod pre-finishing rolling module unit provided by the present invention; Figure 6 To constitute Figure 5 The structural schematic diagram of the import train of the pre-finishing rolling module unit shown; Figure 7 To constitute Figure 5 The schematic diagram of the structure of the export train of the pre-finishing rolling module unit is shown. DETAILED DESCRIPTION
[0010] The structure and working principle of a high-speed wire rod pre-finishing rolling module unit provided by the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0011] like Figure 5 The figure is a schematic diagram of the structure of a high-speed wire rod pre-finishing mill module (referred to as: one-to-one mode) provided by the present invention. The inlet frame 43 and the outlet frame 44 in the box body 40 are provided with a steel bar inlet 41 and a steel bar outlet 42; the input shaft system 431 constituting the inlet frame 43 is driven by the inlet frame motor 432, and the input shaft system 441 constituting the outlet frame 44 is driven by the outlet frame motor 442. Among them, the structures of the inlet frame 43 and the outlet frame 44 constituting the high-speed wire rod pre-finishing mill module are respectively as shown in Figure 6 and Figure 7As shown in the figure, the structure of the import rack 43 includes an input shaft 411 and a driven shaft 412 at an angle of 45 degrees, and the driven shaft of the import rack drives the roller shaft 413 of the import rack roll box; the structure of the export rack 44 includes an input shaft 421 and a driven shaft 422 at an angle of 45 degrees, and the driven shaft of the export rack drives the roller shaft 423 of the export rack roll box. That is, the steel bar 45 passes through the inlet 41 of the box body 40, and the import rack roll box roller shaft 413 driven by the driven shaft 412 of the import rack 43 and the export rack roll box roller shaft 423 driven by the driven shaft 422 of the export rack 44 are reduced in diameter at a staggered hybrid angle of 45 degrees, and then sent out from the steel bar outlet 42, completing the pre-finishing rolling of the steel bar 45, and then entering the finishing rolling process.
[0012] In the structure constituting the above-mentioned high-speed wire rod pre-finishing mill module unit: 1. A steel bar cutting and shearing mechanism 46 is provided at the steel bar inlet constituting the above-mentioned box body, which is used to cut the pre-finished steel bars; 2. In order to more conveniently and accurately adjust the process parameters of steel rolling, an import frame speed change mechanism 433 is provided between the input shaft system 431 of the import frame 43 and the import frame motor 432, and an export frame speed change mechanism 443 is provided between the input shaft system 441 of the export frame 44 and the export frame motor 442.
Claims
1. A high-speed wire rod pre-finishing mill module unit, characterized in that: It comprises an import rack and an export rack arranged in a box body with a steel bar inlet and a steel bar outlet. The steel bars pass through the steel bar inlet and are reduced in diameter by the import rack and the export rack to complete pre-finish rolling before being sent out from the steel bar outlet. The input shaft constituting the import rack is driven by an import rack motor, and the input shaft constituting the export rack is driven by an export rack motor.
2. A high-speed wire rod pre-finishing mill module unit according to claim 1, characterized in that: A steel bar clamping, cutting and shearing mechanism is arranged at the steel bar inlet constituting the box body.
3. A high-speed wire rod pre-finishing mill module unit according to claim 1, characterized in that: An import rack speed change mechanism is arranged between the import rack and the import rack motor, and an export rack speed change mechanism is arranged between the export rack and the export rack motor.