Collapsible diameter increasing sleeve and method thereof

Abstract

The utility model discloses a collapsible diameter increasing sleeve and a method thereof. The collapsible diameter increasing sleeve is mounted on a central spindle of an uncoiling machine or coiling machine and at least comprises multiple sector diameter increasing plates and multiple collapsible members, wherein the sector diameter increasing plates are spliced with one another to form a hollow cylinder; and the collapsible members are arranged on the inner sides of the sector diameter increasing plates and connect adjacent two sector diameter increasing plates. The collapsible diameter increasing sleeve disclosed by the utility model has a function of adjusting the diameter of the diameter increasing sleeve online in real time and a function of adjusting the outer diameter of the diameter increasing sleeve through the expansion and contraction of the central spindle according to the diameter of the inner diameter of a steel coil within a certain range, remarkably saves the time of replacing the diameter increasing plate, reduces the spare parts of the diameter increasing plates with different sizes, and greatly improves the operation efficiency of the production line.

Description

technical field [0001] The utility model belongs to the technical field of metallurgical equipment, in particular to a diameter-increasing sleeve installed on the mandrel of an uncoiler or a coiler. Background technique [0002] At present, the existing measures for increasing the diameter of the mandrel often use several diameter-increasing plates of fixed size, and then set the diameter-increasing plates on the mandrel of the uncoiler or coiler through fasteners. The inner diameter size needs to be matched with different diameter increasing plate sizes to achieve the diameter increasing function. In this way, it is necessary to replace different sizes of increasing diameter plates according to different steel coil inner diameter sizes. Since the connecting form of the increasing diameter plate and the mandrel is bolt tight In addition, the condition of the loading and unloading site at the mandrel is unsafe and very bad. It takes a lot of labor and time to replace a set of...

AI Technical Summary

Problems solved by technology

[0002] At present, the existing measures for increasing the diameter of the mandrel often use several diameter-increasing plates of fixed size, and then set the diameter-increasing plates on the mandrel of the uncoiler or coiler through fasteners. The inner diameter size needs to be matched with different diameter increasing plate sizes to achieve the diameter increasing function. In this way, it is necessary to replace different sizes of increasing diameter plates according to different steel coil inner diameter sizes. Since the connecting form of the increasing diameter plate and the mandrel is bolt tight In addition, the condition of the loading and unloading site at the mandrel is unsafe and very bad. It takes a lot of labor and time to replace a set of increasing plate. If the bolts are bald or slipped due to repeated disassembly, then replace a set It takes 4 to 8 hours to increase the diameter of the plate, which greatly limits the operating efficiency of the production line

[0003] In addition, the industry also adopts the method of fixed-size diameter-increasing sleeves. According to the inner diameter of different steel coils, one-piece diameter-increasing sleeves of different diameter-increasing sizes are prepared according to the outer diameter of the mandrel. In the inner cavity, since the size of the inner diameter of the steel coil and the size of the diameter-increasing sleeve are within a certain range, the matching relationship between the two is difficult to control, which has a great influence on the formation of tension and the value of the tension, and because the diameter-increasing sleeve is Hard press-in loading and unloading, the wear of the diameter increasing sleeve is very large, and the number of spare parts and the space occupation of the diameter increasing sleeve have high requirements

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