Adjustable pressure roll for calender

Abstract

The invention relates to an adjustable pressure roll for a calender, and is used for the calendar to carry out calender finish on paper, pure cotton, chemical fiber and blend fabric thereof. The adjustable pressure roll comprises a core shaft (1), a roll sleeve (3) and a plurality of first small cylinders (2), wherein the roll sleeve (3) is a hollow uniform roll and is sheathed on the core shaft (1); the first small cylinders (2) are arranged at the upper part of the core shaft (1) along the length direction of the core shaft (1); the center of a piston of each small cylinder (2) is provided with a hydraulic oil channel (2.1) of the first cylinder; a first core shaft hydraulic oil channel (1.1) is arranged on the core shaft (1) along the length direction of the core shaft (1); and the first core shaft hydraulic oil channel (1.1) on the core shaft (1) is communicated with the hydraulic oil channel (2.1) of the first cylinder at the center of the piston of each small cylinder (2). The adjustable pressure roll is characterized in that the two ends of the core shaft (1) are respectively provided with a vertical adjusting device (4) in an abutting manner. The adjustable pressure roll has the advantages that the control is convenient, the structure is simple, and safety and reliability are achieved.

Description

(1) Technical field [0001] The invention relates to a calender, in particular to an adjustable pressure roller for the calender. It is used for calender finishing of paper, pure cotton, chemical fiber and their blended fabrics. (2) Background technology [0002] ZL01217474.2 discloses an "adjustable pressure roll for a calender", which includes a roll sleeve, a mandrel, several small oil cylinders and jacking cylinders installed at both ends of the mandrel. The roller sleeve is a hollow uniform roller, the mandrel is set in the roller sleeve, and several small oil cylinders are installed on the upper part of the mandrel. There is a hydraulic oil channel in the center of the piston of the small oil cylinder, and a hydraulic oil channel is also opened on the mandrel. The hydraulic oil passage communicates with the hydraulic oil passage on the small live cylinder piston. The pressure of the jacking oil cylinder applied at both ends of the mandrel is re-pressurized to the uppe...

AI Technical Summary

Problems solved by technology

If the roller sleeve starts to pressurize before it touches the small oil cylinder of another roll, the roller sleeve will be broken, so it is difficult to control the action timing of the small oil cylinder, and accidents will easily occur if the control is improper.

[0004] 2. Complex structure

Images