Coiler jaw

Abstract

The invention discloses a coiler jaw. The coiler jaw comprises sector blocks, a four-edge mandril, a jaw sector block, a movable jaw and a fixed jaw, wherein the jaw sector block and the sector blocks are pieced together to form a cylinder; the four-edge mandril is arranged in the center of the cylinder; the movable jaw and the fixed jaw are arranged in the jaw sector block; the four-edge mandrilis driven by a driving mechanism to axially move along the center of the cylinder; and a wedge mechanism which converts axial movement of the four-edge mandril to radial movement of the movable jaw is arranged between the four-edge mandril and the movable jaw. The coiler jaw has the following beneficial effects: as the jaw horizontal movement wedge which can drive the jaw to horizontally move is adopted and is connected with the four-edge mandril as a whole, the pyramid coiler realizes expansion and shrinkage of the coiling block and clamping and loosening of the jaw by only using an expanding and shrinking cylinder used for pushing the four-edge mandril, thus greatly reducing the complexity of the coiling block and ensuring the coiling block to act sensitively and accurately.

Description

technical field [0001] The invention relates to a quadrangular pyramid coiler in a cold rolling mill for copper and copper alloy strips. Background technique [0002] At present, the reel jaws of the large-tension quadrangular pyramid coiler are composed of 6 Ф45 piston cylinders installed on the fan-shaped block to push the jaw plate to clamp the copper strip and release it by the spring. The limitation of the distance between the two parallel planes of the mandrel can accommodate the hydraulic cylinder and the position of the jaw plate is extremely limited, so that the hydraulic cylinder at the front end of the six piston rods connected to push the jaw plate can only be made into an open type without gland, guide, and seal. Under the action of high tension, the piston rod not only bears the axial pressure but also bears the lateral bending force under the action of tension, which brings great difficulty to the sealing of the sealing ring on the piston alone, and the oil le...

AI Technical Summary

Problems solved by technology

[0002] At present, the reel jaws of the large-tension quadrangular pyramid coiler are composed of 6 Ф45 piston cylinders installed on the fan-shaped block to push the jaw plate to clamp the copper strip and release it by the spring. The limitation of the distance between the two parallel planes of the mandrel can accommodate the hydraulic cylinder and the position of the jaw plate is extremely limited, so that the hydraulic cylinder at the front end of the six piston rods connected to push the jaw plate can only be made into an open type without gland, guide, and seal. Under the action of high tension, the piston rod not only bears the axial pressure but also bears the lateral bending force under the action of tension, which brings great difficulty to the sealing of the sealing ring on the piston alone, and the oil leakage of the jaw clamping cylinder often occurs , and the hydraulic oil is a hydrocarbon, which is easy to carbonize on the surface of the copper strip and affects the surface quality of the product. The oil circuit of this structure is complicated, the processing is difficult, the production cost is high, oil leakage is easy, and the maintenance workload is large, which directly affects the production efficiency of the enterprise.

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