Hydraulic safety device for two-roller calender

Abstract

The invention provides a hydraulic safety device for a two-roller calender, which is characterized in that the hydraulic safety device comprises a hydraulic cylinder (1), a sensor (2), a hydraulic system (8) and a control system (9), wherein, the hydraulic cylinder (1) is arranged below a roller bearing (10); the sensor (2) is arranged below the hydraulic cylinder (1); the sensor (2), the controlsystem (9), the hydraulic system (8) and the hydraulic cylinder (1) are connected sequentially. The invention has simple structure, and can detect the horizontal pressure change of the roller; when the horizontal pressure exceeds a preset value, a roller automatically enlarges roller spacing through the hydraulic system, avoiding the occurrence of roller damage; when the horizontal pressure dropsto a certain value, the roller automatically resets. The whole process is completed in an instant and the production line process is not affected; on the other hand, piling glue amount can be controlled by horizontal pressure detection.

Description

technical field [0001] The invention relates to an overload safety protection device for rollers of a two-roll calender, in particular to a hydraulic safety device for a vertical two-roll calender. Background technique [0002] Calender is a widely used equipment in the rubber industry, and it is also a key equipment for tire manufacturing plants and rubber belt manufacturing plants. When the calender works, two rollers need to exert a certain lateral pressure on the calendered material. In order to prevent damage to the rollers, safety devices must be installed at both ends of the rollers to protect the rollers of the calender. Due to the continuous change of the amount of accumulated rubber material fed to the upper and lower rollers of the calender in the working state, the pressure on the rollers changes accordingly, and the pressure is transmitted to the safety devices at both ends of the rollers. When the accumulated glue is too much, the lateral pressure will be too ...

AI Technical Summary

Problems solved by technology

Due to the long replacement time of the safety sheet, it may cause the material to stay on the production line for too long, resulting in a decline in the quality of the product, and even damage to the equipment. In addition, it is difficult to control the thickness and rupture force of the safety sheet during manufacturing.

Traditional safety devices cannot detect the actual pressure of the rollers. These problems generally exist in domestic and imported machines, and have not been resolved

On the other hand, due to the different expansion of rubber products rolled under different pressures, the thickness of the products is uneven, and the actual pressure of the roller cannot be detected, so the lateral pressure and the thickness accuracy of the rolled products cannot be effectively controlled.

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