JPH0643662B2 - Bending adjustable roll - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a bending-adjustable roll, and more specifically, a uniform roll when a dipping solution such as a dyeing solution, a chemical solution, or water is applied to a cloth. Pressing roll for applying uniform pressure, or a bending adjustable roll used for a coating roller or the like in which it is desired to make the clearance between the facing rolls uniform in the width direction when coating a continuous strip. Regarding

[Conventional technology]

When an object is pressed using a pressing roll, it is desirable that the object can be pressed as uniformly as possible over the entire width of the object, but as shown in FIG. Since it is not possible to press the roll, the pressure applied to the roll becomes weak near the center of the roll. Therefore, various measures have hitherto been made so that the roll can apply a uniform pressure over the entire width of the object.

As an example thereof, a pressing roll as disclosed in Japanese Patent Publication No. 52-17146 is proposed. Hereinafter, the structure and operation of this roll will be described with reference to FIGS. 6 to 8.

This pressing roll has a rotary shaft (20) penetrating the inside of the cylindrical pipe (10), and the rotary shaft (2
(0), the both ends of the rotating shaft (20) are rotatably supported by the support members (30), and the conical head is located inward of the support members (30) at the both ends. The slidable body (70) having the same is slidably attached to the shaft, and the cylindrical tube (10)
A concave conical guide portion that joins with the conical head of the sliding body (70) is formed on the inner surfaces of both ends of the sliding body (70), and thrust means (72) for applying an axial force to the sliding body (70) is provided to form the conical shape. The joint pressure between the head portion and the conical guide portion can be adjusted.

This pressing roll can obtain a uniform pressure distribution as follows. First, under the condition that the sliding body (70) is not in contact with the concave conical guide portion at all (Fig. 6), when this conventional roll is pressed against the opposing roll, the cylindrical tube (10)
The pressing force of is larger at the central portion where the rotating shaft (20) is in contact (Fig. 8). Next, slide the sliding body (70) toward the center of the roll and press-fit it between the cylindrical pipe (10) and the rotary shaft (20) as shown in FIG. 7, and push the rotary shaft (20). The pressure also acts on the end of the cylindrical tube (10), and the pressing force of the cylindrical tube (10) becomes uniform in the width direction.

[Problems to be solved by the invention]

However, in the conventional roll, first, the roll is pressed against the opposing roll, and then the sliding body is slid in the central direction of the roll to adjust the displacement amount.
The displacement cannot be adjusted without pressing the roll. Therefore, the work of adjusting the displacement amount is inconvenient, and the displacement amount cannot be adjusted in the case of a roll that does not require pressing.

Further, in the conventional roll, when the roll is stationary, the conical head of the sliding body is joined to the conical guide portion of the cylindrical tube in a wedge shape, so that the sliding movement of the sliding body in and out is smooth. In addition, there is a drawback that the restoration of the displacement amount is poor.

In view of the above, the present invention provides a bending-adjustable roll that can adjust the displacement amount without pressing the roll against the opposing roll and that can restore the displacement amount even when the roll is stationary. It is the one we are trying to provide.

[Means for solving problems]

In the bending adjustable roll of the present invention, the support member for supporting the roll has an eccentric collar inside the sleeve, and the outer periphery and the axial center of the inner periphery are eccentric. By supporting the end portion of the rotating shaft via a bearing and rotating the eccentric collar, the eccentric amount of the axial center of the cylindrical tube and the rotating shaft at the roll end portion is changed. , A cylindrical tube is displaced in its diameter direction.

[Action]

To press an object using the bending adjustable roll of the present invention, the following is performed. First, when the eccentric collar is rotated by an air cylinder or the like, both ends of the rotating shaft are formed to have a small diameter and there is a gap between the rotating shaft and the cylindrical pipe. And the axis of the rotary shaft are eccentric. However, since the cylindrical tube is fixed to the rotating shaft at substantially the center, the central portion of the cylindrical tube is bent and displaced in a gentle arc shape. Then, this displacement amount can be changed by rotating the eccentric collar.

Further, when the eccentric collar is rotated again in the original direction by an air cylinder or the like, the displaced roll can be restored to the original state.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

(10) is a cylindrical tube of the pressing roll according to the present invention (1),
A tubular rubber (12) is covered over the entire width.

Reference numeral (14) denotes a support cylinder that carries the cylindrical tube (10), and one end portion (16) of the support cylinder (14) is fitted and fixed to both inner peripheral surfaces of both ends of the cylindrical tube (10).

(20) is a rotating shaft penetrating the inside of the cylindrical pipe (10) and the support pipe (14), the central portion of the rotating shaft (20) is the central portion of the cylindrical pipe (10). It is fixed. Rotating shaft (20)
The outer diameter of the central portion is substantially the same as the inner diameter of the cylindrical tube (10), but the outer diameters of both end portions are smaller than the inner diameter of the cylindrical portion (10). The rotary shaft (20) has a projecting portion (22) projecting outward from the other end portion (17) of the support cylinder (14) at both end portions.

Reference numeral (30) is a supporting member that supports the roll (1) at both ends, and (32) is a supporting member (30). The sleeve (32) is a short-angled cylinder having a cylindrical hollow portion, and a circumferential wall of the hollow portion has a double annular recess inward and outward.
(34) and (36) are provided. A first ball bearing (41) is fitted in the inner annular recess (34), and a second ball bearing (42) is fitted in the outer annular recess (36). The other end portion (17) of the support cylinder (14) is fitted on the inner peripheral surface of (). By doing so, the sleeve (32) is fitted with a ball bearing (4
The cylindrical tube (10) is rotatably supported via 1) and the support tube (14).

Reference numeral (50) is a short cylindrical eccentric collar, which is fitted into the inner peripheral surface of the second ball bearing (42). A third ball bearing (43) is fitted on the inner peripheral surface of the eccentric collar (50), and the third ball bearing (4
The protrusion (22) of the rotary shaft (20) is fitted on the inner peripheral surface of (3). By doing so, the sleeve (3
2) is the rotary shaft (20) through the second ball bearing (42), the eccentric collar (50) and the third ball bearing (43)
Is rotatably supported. In this case, the eccentric collar (50) has the axial center of the outer peripheral surface and the inner peripheral surface eccentric by a predetermined amount, so the thickness of the eccentric collar (50) continuously changes. Along with this, the second ball bearing (42) is eccentric with respect to the first and third ball bearings (41) and (43) by a predetermined amount, so that the eccentric collar (50) is rotated by a certain angle. Then, the shaft center of the rotary shaft (20) at the end portion is eccentric to the shaft center of the first ball bearing (41) by a certain amount toward the thinner eccentric collar (50). That is, the axis of rotation at the end (20)
The shaft center of and the shaft center of the cylindrical tube (10) are decentered by a certain amount. However, in the central portion, the axes of the rotary shaft (20) and the cylindrical tube (10) are aligned with each other and both are fixed. For this reason, the central portion of the cylindrical pipe (10) bends in a loose arc shape and is displaced toward the thinner eccentric collar (50). The displacement amount of the cylindrical tube (10) can be changed by rotating the eccentric collar (50).

Reference numeral (52) is an arm for rotating the eccentric collar (50), which is fixed to the outer end surface of the eccentric collar (50) through a screw (54). The arm (52) has a protrusion (53) protruding in the outer peripheral direction, and the air cylinder (56) is connected to the protrusion (53). The eccentric collar (50) can be rotated by operating the air cylinder (56) to rotate the arm (52). In this case, the bend amount can be adjusted by adjusting the air supply pressure to the air cylinder (56).

Instead of the air cylinder (56), a screw (not shown) or a motor (not shown) may be connected to the protrusion (53) to rotate the arm (52).

Reference numeral (60) is a holder having an L-shaped cross section, which holds the sleeve (32) through a screw (62).

Reference numeral (24) is a pulley in which an end portion of the rotary shaft (20) is arranged, and the rotary shaft (20) and thus the cylindrical pipe (10) can be rotated through the pulley (24). .

The first to third ball bearings (41), (42),
(43) is arranged for smooth rotation of the cylindrical tube (10) and the rotating shaft (20), but these bearings (41),
(42) and (43) may be changed to bearings of other types.

Hereinafter, the bending adjustable roll according to the present invention (1)
An example of using will be described. FIG. 4 shows a case where this roll (1) is used as a mangle roll in a patching mangle. The mangle roll is composed of two rolls (1) and (2) facing each other in order to squeeze the immersion liquid from the cloth or to pad the immersion liquid on the cloth. (1) is a roll according to the present invention, and (2) is a well-known roll. When the main pressurization for squeezing is performed via the roll (2), the roll (2) bends so as to form a gap with the roll (1) in the central portion. Therefore, the eccentric collar (50) of the roll (1) is rotated to bend the roll (1) so that the clearance between both rolls (1) and (2) becomes constant. By thus adjusting the clearance between the rolls (1) and (2), a uniform pressing force can be obtained and the cloth can be uniformly squeezed across the entire width. By adjusting the amount of rotation of the eccentric collar (50) to increase the displacement amount, a medium aperture can be formed, and when the displacement amount is reduced, both ends can be formed.

In the conventional padding mangle, in order to reduce the displacement amount, it is necessary to increase the roll diameter as the roll width increases, or to make the outer diameter of the roll center larger than the outer diameter of the end portion. Atsuta However, when the roll of the present invention is used as a mangle roll, the roll diameter can be reduced, and the nip width at the time of pressing can be reduced to increase the linear pressure on the fabric, so that the drawing effect is enhanced.

It is also effective to use the bending-adjustable roll (1) of the present invention as a roll doctor or back roll of a coating machine (Fig. 9). In order to perform uniform coating in the width direction in the coating machine, it is desirable that the roll doctor is less likely to bend due to the weight of the eyes or reverse bend due to hydraulic pressure. When the roll doctor of the present invention is used to bend the roll doctor in the direction opposite to the direction in which the roll doctor bends, the amount of bending of the roll doctor is reduced, so that uniform coating can be obtained in the width direction.

〔The invention's effect〕

In the roll with adjustable bending according to the present invention, since the cylindrical tube can be bent by rotating the eccentric collar, the displacement amount of the roller can be adjusted by changing the rotation angle of the eccentric collar. Becomes Therefore, the roll of the present invention can adjust the amount of displacement without pressing it against the opposing roll, and can restore the amount of displacement even when the roll is stationary.

[Brief description of drawings]

1 is a partial sectional view of a bending-adjustable roll according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is a sectional view of the roll shown in FIG. A side view, FIG. 4 is a side view showing an example of use of the roll shown in FIG. 1, FIG. 5 is a sectional view showing a pressing state when a known pressing roll is used, and FIG. 6 is a conventional roll. FIG. 7 is a partial sectional view showing a state before press-fitting the sliding body, FIG. 7 is a partial sectional view showing a state after press-fitting the sliding body in a roll similar to FIG. 6, and FIG. 6 is a sectional view showing the pressing force of the roll in the state of FIG. 6, and FIG. 9 is a sectional view showing an example of use of the roll of the present invention. [Explanation of symbols] (10) …… Cylindrical tube, (20) …… Rotary shaft (30) …… Supporting member, (32) …… Sleeve (50) …… Eccentric collar

Claims (1)

[Claims] 1. A cylindrical pipe is penetrated by a rotary shaft, and the cylindrical pipe is fixed to the rotary shaft at substantially the center of the cylindrical pipe. In a bending-adjustable roll that projects outward and rotatably supports both ends by a support member, the support member has an outer periphery and an inner periphery that are eccentric to each other inside the sleeve. It has an eccentric collar, and the inner circumference of the eccentric collar supports the end of the rotary shaft directly or through a bearing, and by rotating the eccentric collar, the cylindrical tube and the rotation at the roll end are rotated. A bending-adjustable roll characterized in that the amount of eccentricity of the axis of the shaft changes and thereby the cylindrical tube is displaced in the diametrical direction thereof.