Hook key type roll bushing quick change device

Abstract

The invention relates to a gib head key-type quick change device for a roller bushing. The gib head key-type quick change device comprises a wall plate A, a wall plate B and a roller unit, wherein the roller unit comprises a roller shaft, an input gear and rollers; the two rollers are axially oppositely positioned through partial bushing; the partial bushing sleeves the roller shaft; key grooves are formed at a non-powered transfer end of the roller shaft along the axial direction; gib head keys are arranged in the key grooves; each gib head key comprises a gib head part and a sliding part; each gib head part is arranged at one end of the corresponding sliding part; the other end of each sliding part extends out of the wall plate A; each gib head part props against the end surface of the roller shaft far away from the input gear; and the other end of each sliding part is locked by a locking nut. The gib head key-type quick change device has the advantages that the rollers are axially positioned through partial bushing and are locked by the gib head keys, so that the overall change operation is convenient, simple and fast; the operation space is reduced; and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of rapid product size changeover of cold-bending rolling mills, in particular to a hook key type roll liner quick changeover device. Background technique [0002] When rolling profiles with a cold roll forming mill, materials with the same cross-sectional shape but different sizes (such as: C profiles, U profiles, etc.) will be produced according to different application requirements. If one rolling mill is produced for each size, not only the cost is too high, but also the production site cannot meet the requirements. Since the cross-sectional shape of the profile is the same, the lateral distance between the rolls can be changed to meet the requirements, instead of multiple rolling mills. [0003] In order to achieve the above purpose, there are two common traditional methods: one is to increase the inner diameter of the bearing supporting the roll shaft and the thickness of the bearing, and install a bus...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the entire equipment will be enlarged due to the enlarged bearing, and the cost will increase.

And because the thickness of the bearing increases, it is required to increase the thickness of the arch frame of the bearing, so this method cannot be used in the wall panel mill; the second is to increase the width of the wall panel mill, so that two sets of lock nuts are added at both ends of the roll, which needs to be replaced. When the bushing is used, loosen the two sets of nuts, and then lock them after replacing them

The disadvantage is that the width of the rolling mill increases, the weight and cost increase, and the lock nut is inside the wallboard, which is not easy to operate, increases labor intensity, and prolongs the time for type change

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