Stretching bending straightening mechanical system with self-adaptive function in case of pass through welding seam

Abstract

The invention provides a stretching bending straightening mechanical system with a self-adaptive function in the case of pass through a welding seam, and belongs to the technical field of cold rolling. The system involves a turning roller, a first welding seam detector, an inlet tensioning roller group, a 1# bending roller group, a 2# bending roller group, a straightening roller group, a second welding seam detector and an outlet tensioning roller group, wherein the first welding seam detector is arranged behind the turning roller, the second welding seam detector is arranged behind the straightening roller group, the inlet tensioning roller group is arranged behind the first welding seam detector, the outlet tensioning roller group is arranged behind the second welding seam detector, andthe 1# bending roller group, the 2# bending roller group and the straightening roller group are arranged between the inlet tensioning roller group and the outlet tensioning roller group in sequence. The system can adapt to welding seams, passing through a stretching straightening machine, of strip steel with various strength, width and thickness specifications, and can realize automatic switchingof stretching straightening process parameters of the welding seam with poor welding quality according to the detected welding seam position, thereby reducing the workload on workers and improving theautomatic working capacity of the equipment.

Description

technical field [0001] The invention relates to the technical field of cold rolling, in particular to a mechanical system for stretching, bending and straightening with the self-adaptive function through welding seams. Background technique [0002] In the cold rolling production process, when there are defects in the quality of the weld, the strip breakage accidents are likely to occur on the strip overtension leveler, which affects the smooth production and reduces the production efficiency of the enterprise; at the same time, in actual production, the strip strength and strip The specifications are relatively complicated. When the weld seam of complex specification strip passes through the tension leveler continuously, the time for the change of the tension leveling process parameters and the long running distance of the strip steel will result in poor scale breaking effect of the strip on both sides of the weld seam, which will affect the subsequent pickling process. The ...

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Problems solved by technology

[0002] In the cold rolling production process, when there are defects in the quality of the weld, the strip breakage accidents are likely to occur on the strip overtension leveler, which affects the smooth production and reduces the production efficiency of the enterprise; at the same time, in actual production, the strip strength and strip The specifications are relatively complicated. When the weld seam of complex specification strip passes through the tension leveler continuously, the time for the change of the tension leveling process parameters and the long running distance of the strip steel will result in poor scale breaking effect of the strip on both sides of the weld seam, which will affect the subsequent pickling process. The length of the color difference between the strips on both sides of the strip weld is relatively large, and the head and tail strips are removed during the head and tail cutting of the finished product, which reduces the yield of the plate and increases the production cost of the enterprise.

[0003] In the existing strip acid rolling and tension leveling mode, a weld detector is arranged on the production line, which can automatically detect the position of the weld seam at the head and tail welds in the continuous strip under the "endless rolling" mode , at this time, if the welding quality is found to be poor, it is necessary to manually change the parameters of the tensioning and leveling process at the weld to realize the switching of the parameters during the over-tensioning of the weld with poor welding quality, which increases the workload of the workers; Welding defects at the strip welds can be detected in time, and strip breakage accidents occur when the strip welds pass through the tension leveler, which seriously affects the production benefits and efficiency of the enterprise; if the tension leveling process parameters are not used for the strip welds For tension leveling, each coil of strip steel must be manually operated when over tension leveling, resulting in a decrease in operating efficiency; at the same time, the detection of the weld position is affected by the length error of the looper strip at the entrance, resulting in the strip length in the looper area Larger, if the tension leveling process parameters are not used at the strip weld, it will have a greater impact on the subsequent pickling process, and the length of the color difference on both sides of the strip weld is relatively large, which increases the head and tail of the finished product. The amount of strip removal reduces the yield of the plate

Therefore, it can be seen from the above reasons that the main problems of the existing weld seam over-stretching mode are: 1. The color difference length on both sides of the strip weld seam is large, and the plate yield is low, which reduces the economic benefits of the enterprise; 2. Cannot It is flexible to adapt to the continuous production of various specifications of strip steel, which is prone to welding seam tension and leveling belt breakage accidents, and the safety of tensioning and leveling equipment is poor; 3. The acid consumption near the weld is large, and the pickling efficiency is low, which increases the production cost of the enterprise; 4. There is too much manual intervention in the process of seam stretching and straightening, and the degree of automation of the equipment is low

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