A ring rolling machine

Abstract

The invention belongs to the field of aluminum-pipe loop seam welding and particularly relates to a lining-ring rolling machine applicable to lining rings for aluminum-pipe loop seam welding. The lining-ring rolling machine is characterized in that a supporting ring is used as a mold, the supporting ring of corresponding specification can be mounted on the extending end of a spindle when the lining rings of the different diameter specifications are rolled, the supporting ring is of a rolling structure, weight can be greatly decreased, convenience in disassembly is achieved, cost is lowered, a workpiece and the supporting ring are of full-contact compression deformation, linear sections are not kept at two ends after rolling, and roundness correction processing is not needed; meanwhile, the wall thickness of the supporting rings of the different diameter specifications is not large, change of position of a pressure roller can be greatly reduced, and the rolling machine is simplified in structure; a double-head pressure roller device is the independent pressure roller device, and pressure rollers of different specifications can be designed according rolling diameter; the lining-ring rolling machine is rapid, convenient, complete in rolling specifications and free from roundness correction processing.

Description

technical field [0001] The invention belongs to the field of circular seam welding of aluminum pipelines, and is especially suitable for the field of rolling processing of lining rings used for welding aluminum pipeline circumferential seams, and particularly relates to a lining ring rolling machine. Background technique [0002] In chemical industry and air separation equipment, aluminum pipes are widely used for fluid transportation. Aluminum pipes need to be made into pipe joints first, and then the pipe joints are butt-jointed, assembled and welded. When two pipe joints are butt welded for girth welding, the inner wall of the pipe is lined with a ring ring along the girth weld, which can prevent welding bumps and excessive reinforcement at the root of the weld, and ensure the flow area of ​​the pipeline, that is, ensure the flow area of ​​the pipeline. Fluid passing capacity. [0003] The width of the lining ring is generally 30-40mm, the thickness is 3-4mm, and the dia...

AI Technical Summary

Problems solved by technology

For strip rolling, the reasons for the inconvenient use of ordinary rolling machines are as follows: 1. The length of the stick of the rolling machine is several meters long, so it must be supported at both ends. After the workpiece is rolled, the support at one end of the roller must be disengaged to take out the workpiece. Reduced work efficiency; 2. Due to the large length of the rollers of ordinary rolling machines, in order to ensure the rigidity of the rollers, the diameter of the rollers must be large enough (generally above 100mm), and it is impossible to roll a circle smaller than the diameter of the rollers, and the minimum diameter of the aluminum lining ( 50mm) is smaller than the diameter of the roller, so the rolling specifications are limited; 3. Each roller of the ordinary rolling machine can be individually controlled to move, the action is relatively complicated, the operation is relatively complicated, and the efficiency of the lining rolling machine with a relatively targeted design is low; 4 .When the wide steel plate is rounded, the feeding edge of the steel plate is generally used for positioning. When the ordinary rounding machine rolls the ring with a small width, the workpiece needs to be positioned sideways, which is difficult to achieve; The width is large, and the power of the designed power system is relatively large. When rolling a strip with a small width, a large horse-drawn cart will waste a lot and is not cost-effective.

Ordinary rolling machine is a general-purpose equipment, which has been well developed, but it is mainly used for rolling large-width sheets. Although it can be used for lining rolling, it is inconvenient to use due to the problems described above.

At the same time, due to the influence of the roll structure, when using an ordinary rolling machine to roll the liner, there will be a certain length of straight line at both ends of the rolled liner, which needs to be further corrected during use, which increases the workload.

Images