JPH0620496U - Expander roll - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an expander roll capable of always appropriately and variably controlling the curvature of an outer cylinder by freely bending a shaft. A flexible solid shaft 11 having a required length and an outer cylinder 6 rotatably fitted on the shaft 11.
The shaft 11 is configured such that the pressing rods 13 are attached to both ends of the shaft 11, and the pair of slits 15 are symmetrically formed from the central portion 16 toward both ends. Then, the shaft 11 is appropriately pressed and controlled by the pressing rods 13 from both ends thereof, and the slits 15 are made to freely bend while allowing the slits 15 to absorb the strains caused by the pressing, so that the outer cylinder 6 is always variably controlled to have an appropriate curvature. Can be done.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bendable expander roll for use in removing wrinkles or widthening of paper, cloth or film.

[0002]

[Prior art]

 Conventionally, as this type of expander roll, for example, the one shown in FIG. 5 is known, which will be described with reference to FIG. That is, in the figure, 1 is a flexible solid shaft having a required length, and one end of the shaft 1 is fixedly supported by a required support tool (not shown), At the other end, a pressing rod 3 having a required length is inserted through an insertion hole 2 formed along the axial direction thereof, and the pressing rod 3 is connected to a hydraulic jack 4 or the like. 5 is an elongated slit formed from the side of the insertion hole 2 of the shaft 1 toward the other end along the axis, and 6 is rotatably fitted on the shaft 1 via a required number of bearings 7. Also, 8 is an elastic outer cylinder made of a material such as rubber, Teflon, and steel, 8 is a bobbin forming the outer cylinder 6, and 9 is a space holding collar interposed between the adjacent bearings 7.

The conventional example configured as described above is arranged along a required traveling path in a process of processing paper, cloth or the like. Then, the shaft 1 is curved according to a predetermined purpose such as wrinkle removal or width-out, that is, the pressing rod 3 is pressed toward the fixed end of the shaft 1 while the hydraulic jack 4 is being operated. The position of the pressing rod 3 makes it possible to change the curvature of the outer cylinder 1. As in the above embodiment, one end of the shaft 1 is fixedly supported while the other end is pressed by the hydraulic jack 4 or the like to bend the shaft 1 so that the outer cylinder 6 is bent to a desired curvature. The constitutions that can be obtained are also disclosed in Japanese Patent Publication No. 61-19754 and Japanese Patent Publication No. 63-28149.

[0004]

[Problems to be solved by the device]

 By the way, in the conventional expander roll, as described above, one end of the shaft 1 is bent toward the fixed end while being bent to change the curvature to a predetermined curvature. Differences are likely to occur, and due to the difference in the left and right functions, wrinkles are removed and the width is displaced. In addition, it was impossible to freely change the curvatures at both ends in order to meet the demands for improving the accuracy of wrinkle removal difference and width setting position.

The present invention intends to solve the conventional problems all at once, and to provide an expander roll capable of always appropriately and variably controlling the curvature of the outer cylinder by freely bending the shaft. It is a thing.

[0006]

[Means for Solving the Problems]

 That is, the present invention comprises a flexible solid shaft 11 having a required length and an outer cylinder 6 rotatably fitted on the shaft 11, and the shaft 11 is provided at both ends thereof. The pressing rod 13 is mounted, and a pair of slits 15 are symmetrically formed from the central portion 16 toward both ends.

[0007]

[Action]

 The shaft 11 is appropriately pressed by the pressing rods 13 from both ends thereof, the strains caused by the pressing are absorbed in the slits 15 and are freely curved, and the outer cylinder 6 can be variably controlled to have an appropriate curvature at all times.

[0008]

【Example】

 An embodiment of the present invention shown in the drawings will be described below. 11 is a flexible solid shaft having a required length, 12 is insertion holes formed at both ends of the shaft 11 along the axial direction of the shaft 11, and 13 is inserted into each insertion hole 12. A pressing rod having a required length, and 14 are hydraulic jacks connected to the pressing rods 13 via a support tool. Reference numeral 15 denotes a pair of slits symmetrically formed from the solid central portion 16 of the shaft 11 toward both ends (see FIGS. 2 to 4). Others are the same as the conventional example, and the same reference numerals indicate the same parts.

The embodiment configured as described above is arranged along a required traveling path in the process of processing paper, cloth, etc., similarly to the conventional example. Then, the hydraulic jacks 14 are operated according to a predetermined purpose such as removal of wrinkles or widthening, and the respective pressing rods 13 are pressed toward the central portion 16 of the shaft 11 so that the slits 15 absorb the strain and the shafts shift. By bending 11 the outer cylinder 6 can be bent to the required curvature. At this time, the curvature of the outer cylinder 6 controls the pressing force of each pressing rod 13 by adjusting the hydraulic pressure of the hydraulic jacks 14 at both ends to make the left and right curvatures of the shaft 11 uniform or different right and left curvatures. It can be freely changed as appropriate, and the outer cylinder 6 can always be curved to have an appropriate curvature.

In the above embodiment, the shaft 11 is integrally formed of a flexible material, but the present invention is not limited to this, and the shaft 11 is split into two and only the central portion thereof is joined. Alternatively, it may be configured by joining a semi-disc member to both ends of a solid shaft body having a required length. Further, although the hydraulic jack 14 is shown as a pressing means for pressing the pressing rod 13, it goes without saying that a required adjusting screw may be adopted or these may be used together. Further, the length of the solid portion in the central portion 6 of the shaft 11 may be adjusted so that only both end portions of the shaft 11 are curved to a required bending ratio.

[0011]

[Effect of device]

 According to the present invention, according to the above, the flexible solid shaft 11 having a required length and the outer cylinder 6 rotatably fitted to the shaft 11 are provided. Since the pressing rods 13 are attached to both ends, and the pair of slits 15 are symmetrically formed from the central portion 16 toward both ends, the shaft 11 is pushed from both ends by the pressing rods 13. Therefore, the outer cylinder 6 can be variably controlled to have an appropriate curvature by appropriately controlling the pressing, allowing the strains caused by the pressing to be absorbed in the slits 15 respectively, and freely curving. It is possible to sufficiently meet the demands for improvement of the positional accuracy.

[Brief description of drawings]

FIG. 1 is a fragmentary sectional view showing an embodiment of the present invention.

FIG. 2 is a fragmentary sectional view showing the shaft 11.

3 is a cross-sectional view taken along the line I-I of FIG.

FIG. 4 is a cross-sectional view taken along the line II-II of FIG.

FIG. 5 is a fragmentary sectional view showing a conventional example with some parts omitted.

[Explanation of symbols]

 6 Outer cylinder 11 Shaft 13 Push rod 15 Slit 16 Central part

Claims (1)

[Scope of utility model registration request] 1. A flexible solid shaft 11 having a required length, and an outer cylinder 6 rotatably fitted on the shaft 11. The shaft 11 has pressing rods at both ends thereof. The expander roll is characterized in that a pair of slits 15 are formed symmetrically from the central portion 16 toward both ends of the expander roll 13 while being mounted thereon.