Constant pressure type hydraulic distance-regulating device

Abstract

The invention provides a constant pressure type hydraulic distance-regulating device, relating to a distance-regulating device for regulating a roll gap of an open mill. The traditional distance-regulating device of an open mill is a mechanically combined structure of a motor, a decelerator, a worm wheel-worm, a lead screw-nut and the like, which has the defects of difficult accurate positioning,poor synchronization, about 3mm of idle stroke in a forward-backward conversion of a distance-regulating process, no display on a dial, incapability of accurately protecting a device because a protective pressure value of a safety sheet of a grey iron is a discrete value which always has a deviation area about + / -100kN and the like. The constant pressure type hydraulic distance-regulating device highly controls the accuracy of roll gap, effectively provides accuracy of safe protection pressure, improves the operational reliability of an open mill and satisfies the requirement of European certification safety standards.

Description

technical field [0001] The invention relates to a distance adjusting device for adjusting the size of the roll gap on an open mill, in particular to a constant pressure hydraulic distance adjusting device. Background technique [0002] The mill is one of the most commonly used basic equipment for the processing of rubber and plastic products. [0003] The distance adjustment device of the mill is used to adjust the distance between the two rollers of the mill, so that the mill can work under different roller distances, and together with the safety device, it forms the safety protection device of the mill to prevent Damage to key components such as rollers, racks, and bearings due to roller overload. [0004] Since the original distance adjustment device of the mill adopts a mechanical combination structure such as a motor, a reducer, a worm gear-worm, and a screw-nut, the safety protection adopts a gray cast iron safety plate, which is common in the use process. The follow...

AI Technical Summary

Problems solved by technology

[0005] 1. The large inertia of the mechanical transmission makes it difficult to accurately position the roller distance during the adjustment process

[0006] 2. Due to the difference in the output speed of the motor and the existence of mechanical transmission gaps, the synchronization of the roller spacing on both sides of the roller is poor during adjustment.

[0007] 3. Due to the large gap between the distance adjustment device and the safety device, which cannot be eliminated, there is an empty stroke of about 3mm during the distance adjustment process, and there is no display on the dial, so that the displayed scale is different from the actual roller distance. There is a large deviation

[0008] 4. The adjustable range of the distance adjustment speed is small, which does not meet the European CE safety standard, which affects the sales to users who implement the European CE standard.

[0009] 5. The protection pressure value of the safety plate of gray cast iron is a discrete value, usually the deviation range is about ±100kN, which cannot realize the precise protection of the equipment

[0010] 6. After the safety sheet is broken, the replacement time is longer and the work intensity is greater, which affects the continuity of work

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