Coiling and unreeling machine

Abstract

The invention discloses an uncoiler which comprises a sleeve bearing chamber, wherein a double-direction thrust bearing, a first compression spring and a limiting component orderly arranged on a tension rod are arranged inside the sleeve bearing chamber from an outer end to an inner end; a first shaft shoulder is arranged on the tension rod; the first compression spring is clamped between the limiting component and the first shaft shoulder of the tension rod; a force applying mechanism for pushing the double-direction thrust bearing inwards is arranged on the tension rod; an inner ring of the double-direction thrust bearing is arranged on a first inner ring sleeve; the first inner ring sleeve is sleeved on the tension rod in a mode of sliding inwards relative to the tension rod; the first inner ring sleeve is within an outer ring arranged outside of the double-direction thrust bearing and provided with a second shaft shoulder for tightly resisting against the inner ring of the double-direction thrust bearing inwards, and the first compression spring directly or indirectly applies the elastic force on the inner end face of the first inner ring sleeve. The uncoiler has the advantages that the compression spring is adopted to transmit force in a supporting mechanism, and expansion force on the inner side of a steel strip coil is improved, so moving of a machine is more stable and reliable and the operation is more convenient.

Description

technical field [0001] The invention belongs to the field of unwinding metal wires, metal strips or other flexible metal materials from reels or reels, belongs to the B21C47 / 18 group of IPC classification number, and can also be used for unwinding in textile, printing and dyeing, papermaking, plastics and other industries field, belonging to the field of "Cantilever-type machine-feeding and unrolling of strips", assigned to group B65H16 / 04 of IPC classification number, especially involving five types of winders and one double-sided winder and one Single side unwinding and unwinding machine. Background technique [0002] In the existing rewinding / unwinding machines, if there is an air cylinder / hydraulic cylinder to realize the expansion function of the expansion pad, none of them has the self-locking function. That is, when the air cylinder / hydraulic cylinder or the air circuit / hydraulic line connected to it leaks, the air pressure or hydraulic pressure acting on the piston ...

AI Technical Summary

Problems solved by technology

[0003] But if the air cylinder / hydraulic cylinder with self-locking function is simply applied to the unwinding / rewinding machine field, there will be the following problems: 1. The self-locking of the air cylinder / hydraulic cylinder is only to keep the position of the action lever still, and There is no guarantee that a continuous force can be provided so that the expansion shoe has enough expansion force to expand the inner side of the material roll, but the expansion shoe will not retract only if the expansion shoe is satisfied, and the distance between the expansion shoe and the inner side of the material roll is only Simple passive support force rather than active expansion force, so it is actually not tight. For example, the I-wheel retractable and unwinding machine disclosed in patent application 201010138295.0 does not use self-locking cylinder to tighten the I-wheel; 2 、If the inner diameter of the material roll is not completely uniform, and the inner diameter is slightly too small, it will cause the piston of the self-locking cylinder / hydraulic cylinder to be unable to fully move in place, and the self-locking device cannot be activated. If the inner diameter is slightly larger, it will cause the self-locking cylinder / hydraulic cylinder After the piston of the hydraulic cylinder is fully in place, the self-locking device is activated, and the expansion shoe cannot tighten the inner side of the material roll, and the self-locking cylinder / hydraulic cylinder is still not applicable

[0004] Therefore, applying self-locking cylinders / hydraulic cylinders to the field of unwinding / winding machines to avoid the impact of air leakage or liquid leakage on the safety and reliability of machine operation has always been a problem that technicians in the art are eager to solve but have not been successful. question

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