JPH0598591A - Calendering device - Google Patents

Abstract

PURPOSE:To provide the subject device constituted so as to enable to slide the press line parts of both the ends of a press roll in the circumferential direction of another press roll for the bending between the press rolls, capable of uniformly adjusting the press force of the press rolls, having a high operation efficiency and useful for sheets, etc. CONSTITUTION:The objective device is provided with a pair of press rolls, a press means for the press rolls, and a roll position-adjusting means 3 for adjusting the position of the axis of one of the rolls by rotating the roll on the lateral center between the rolls so that the axes of the press rolls are placed in twisted positions each other. The device is constituted so that the press line parts of both the ends of one of the rolls can be slidden in the circumferential direction of another press roll with the above-mentioned roll position- adjusting means 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a calendar device.

[0002]

2. Description of the Related Art It is known that, when a sheet material is pressed by a pair of pressure rolls, if the pressure is large, the pressure roll is bent and the pressure at the center of the roll is smaller than at both ends. Therefore, a calender device has been proposed in which the central portions of the pressure rolls 121 and 122 are thicker than the both ends by an amount corresponding to the bending amount of the rolls to make the pressing force uniform (FIG. 12).

However, in such a device, there is a problem that the crown amount must be changed if the pressing force changes even a little. For example, the crown amount set when the pressing force is 25 tons is not appropriate when the pressing force is 30 tons, and the amount of pressurization at both ends of the roll and the central portion is different. It becomes impossible to uniformly press the material (cloth or the like). Therefore, in order to pressurize uniformly using such a conventional apparatus, it is necessary to remove either of the pressurizing rolls 121 and 122, re-acquire the crown amount, and mechanically mount an appropriate roll. However, there is a problem that it takes a lot of time and labor efficiency is reduced.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object thereof is to always apply a uniform pressure without changing the roll even if the applied pressure changes. It is to provide a calendar device capable of

[0005]

A calendering device of the present invention proposed to achieve the above object is a pair of pressure rolls, a pressure roll pressure means, and a pressure roll width direction. Roll position adjusting means for adjusting the position of the roll shaft so that the roll shaft of each pressure roll is arranged in a twisted position by rotating one of the pressure rolls around the central portion. With respect to bending of the pressure roll, the pressure line portions at both ends of the one pressure roll are configured to be displaced in the circumferential direction of the other pressure roll by the roll position adjusting means. It is a thing.

[0006]

According to the calendering device of the present invention, the pressing line portions on both ends of one pressing roll can be displaced in the circumferential direction of both ends of the pressing roll by the position adjusting means during pressing. Therefore, it is possible to give the same effect to the sheet material that the diameter of both end portions is smaller than the diameter of the center portion of the pressure roll without replacing the roll, and therefore it is possible to cope with the change in the bending amount of the roll. By adjusting the twist angle of the roll shaft, the pressing force can be adjusted to be uniform over the entire length of the pressure roll.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a calendar device of the present invention will be described below with reference to the drawings. The calender device is composed of a fixed roll 1, a moving roll 2, a roll pressurizing means 4 and a roll position adjusting means 3, and a sheet material S such as a cloth is passed between the rolls 1 and 2 to polish or crush it. is there.

The fixed roll 1 is a flat roll without a crown.

The moving roll 2 is composed of a crown roll thickened by an amount corresponding to the bending amount of the fixed roll 1 generated at the time of the minimum use pressure, and is used in the roll pressurizing means 4 such as a hydraulic cylinder or a pneumatic cylinder. It is configured to press in the direction of the fixed roll 1. Moving roll 2
Is rotated by the roll position adjusting means 3 so that both ends of the moving roll 2 are rotated in the horizontal plane around the center of the moving roll 2 in the width direction, and the roll shafts 1A and 2A of the fixed roll 1 and the moving roll 2 are rotated.
Can be arranged from the parallel position to the twist position, and the twist angle Θ can be freely set (FIG. 2).

When pressure is applied at the minimum working pressure, the roll shafts 1A and 2A of the fixed roll 1 and the movable roll 2 are used.
Are placed in parallel and uniformly pressed over the entire length of the rolls 1, 2. When pressurizing with a pressurizing force larger than the minimum operating pressure, the bending amount of the fixed roll 1 increases, but if the roll shafts 1A and 2A are left in parallel, as shown in FIG. The pressing force at the central portion of 2 is smaller than the pressing force at both ends, resulting in defective pressurization. Therefore, as shown in FIGS. 4 to 8, by moving the pressing line portions L at both ends of the moving roll 2 in the circumferential direction of the fixed roll 1 by the position adjusting means 3, the moving roll 2 is moved.
The diameter of both ends of the roll 1 becomes D / 2-f (D; the diameter of both ends of the moving roll 2, f; the amount of both ends of the moving roll 2 deviated in the vertical direction). , 2 can be uniformly pressed over the entire length.

That is, when pressure is applied at a pressure higher than the minimum operating pressure, as shown in the linear pressure distribution chart of FIG. 9, the pressure at the center of the rolls 1 and 2 in the width direction is greater than the pressure at both ends. Also becomes smaller. On the other hand, when pressure is applied with no bending phenomenon (minimum use force) and the roll shafts 1A and 2A are arranged at the twisted positions, the central parts of the rolls 1 and 2 are pressed more strongly than both ends. Therefore, the linear pressure distribution map is shown in Fig. 9
Contrary to what is shown in Fig. 10, the pressing force at the central part of the roll becomes larger than the pressing force at both ends (Fig. 10). Therefore, the pressure applied is greater than the minimum operating pressure, and the roll shafts 1A, 2A
When the pressure is applied in a state where it is arranged at a twist position at a twist angle Θ of an appropriate size, a uniform linear pressure can be obtained as shown in FIG.

Then, the larger the twist angle of each roll shaft 1A, 2A, the smaller D / 2-f, and substantially the same effect as changing the amount of crown is obtained.

[0013]

According to the calendering device of the present invention, uniform pressure can be always applied by adjusting the twist angle of the roll shaft in response to the change in the bending amount of the roll. It is not necessary to retake the crown, and the work efficiency of the calendar can be improved.

[0014]

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of a calendar device of the present invention.

FIG. 2 is a plan view of an embodiment of the calendar device of the present invention.

FIG. 3 is a front view showing the operation of adjusting the position of the moving roll of the calendar device of the present invention.

FIG. 4 is a front view showing the operation of adjusting the position of the moving roll of the calendar device of the present invention.

5 is a sectional view taken along line AA of FIG.

6 is a sectional view taken along line BB of FIG.

7 is a sectional view taken along line CC of FIG.

FIG. 8 is an enlarged view of FIG.

FIG. 9 is a linear pressure distribution diagram showing a pressurized state under a bending phenomenon.

FIG. 10 is a linear pressure distribution diagram showing a pressurized state by the calendar device of the present invention.

FIG. 11 is a linear pressure distribution diagram showing a pressurized state by the calendar device of the present invention.

FIG. 12 is a front view showing a conventional example of a calendar device.

[Explanation of symbols]

 1 Fixed Roll 2 Moving Roll 3 Roll Position Adjusting Means 4 Roll Pressing Means

Claims (1)

[Claims] 1. A pair of pressure rolls, a pressure means for the pressure rolls, and one of the pressure rolls which is rotated about a central portion in the width direction of the pressure rolls so as to rotate a roll shaft of each pressure roll. And a roll position adjusting means for adjusting the position of the roll shaft so that the rolls are arranged in a twisted position, and the pressing line portions at both ends of the one pressing roll against bending of the pressing roll. Is configured to be shifted in the circumferential direction of the other pressure roll by the roll position adjusting means.