JPH08209577A - Screen cylinder for paper-making machine - Google Patents

Abstract

PURPOSE: To provide a screen cylinder which is applied to a paper-making machine for giving a variety of patterns to the paper produced. CONSTITUTION: In a screen cylinder 31 for paper-making, being equipped with a rotation shaft 2 and a cylinder 3 which rotates together with the shaft, as it is supported thereby, and is equipped with a paper-making screen on its outer periphery, the cylinder is constituted with a plurality of discontinuous rings 5 and sliding bars 6 supporting each ring are arranged between each ring and the rotation shaft. Further, the rotation shaft 2 is tapered in the longitudinal direction and made reciprocative so that the diameter of the cylinder 3 is expanded or shrunk through the slide bar 6 corresponding to the reciprocation of the rotation shaft 2 where paper is made when the cylinder is expanded, while a screen 4 is exchanged when it is shrunk. Since the diameter of the screen cylinder is simply expanded or shrunk only by sliding the rotation shaft 2 in the longitudinal direction, the paper-making screen 4 can be readily exchanged with other screens having a variety of patterns or marks whereby the production costs are largely reduced and the small lot production becomes possible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder cylinder for papermaking which is applied to a papermaking machine to form various patterns.

[0002]

2. Description of the Related Art As a papermaking mechanism used in a conventional papermaking machine for Japanese papermaking, a papermaking net stretched over an endless belt or a netting cylinder stretched over a cylinder cylinder is generally used. It was used.

When a pattern or mark is applied to Japanese paper, a papermaking mechanism in which a papermaking net is stretched on a cylinder cylinder is often used, and the wire of the papermaking net is welded to the cylinder cylinder. It was used for the production of Japanese paper with patterns and marks.

[0004]

However, in the above-mentioned conventional example, the wire of the paper making net having various patterns and marks is welded to the cylinder cylinder.
Therefore, it is necessary to prepare a large number of papermaking nets with patterns, and it is also required to create the same number of cylinder cylinders as the types of papermaking nets. I needed space.

[0005] The cylinder cylinder for papermaking of the present invention is intended to solve the above-mentioned drawbacks of the conventional example, and the diameter of the cylinder cylinder can be easily expanded or contracted simply by sliding the rotating shaft in the longitudinal direction. It is an object of the present invention to provide a cylinder cylinder for papermaking, which enables a papermaking net having various patterns and marks to be replaced easily and quickly while using a common cylinder cylinder.

[0006]

Means for Solving the Problems That is, a paper net cylinder according to the present invention comprises a rotating shaft, a cylinder portion supported by the rotating shaft and rotating together with the rotating shaft, and having a paper making net attached to the outer periphery thereof. In a cylinder cylinder for papermaking having, the cylinder part is composed of a large number of discontinuous ring bodies, and a slide rod supporting each ring body is arranged between each ring body and the rotating shaft, and By forming a taper in the length direction to allow the rotating shaft to advance and retract in the length direction, the diameter of the cylinder part expands and contracts via the slide rod according to the advance and retreat of the rotating shaft, and at the time of expansion, paper making, The feature is that the papermaking net can be replaced when the size is reduced.

The cylinder for papermaking of the present invention is
A cylinder cylinder for papermaking having a shaft cylinder, a rotary shaft held in the shaft cylinder so as to be capable of advancing and retracting in the longitudinal direction, and a cylinder portion that rotates together with the rotary shaft and has a papermaking net for papermaking mounted on the outer periphery. In the above, the cylinder part is composed of a large number of discontinuous ring bodies, and a slide rod supporting each ring body is arranged between each ring body and the rotating shaft via a slide guide provided on a shaft cylinder, and By forming a taper in the length direction of the rotating shaft, the diameter of the cylinder part can be expanded / reduced via the slide rod according to the advance / retreat of the rotating shaft. It is characterized by that.

Further, in the cylinder cylinder for papermaking according to the present invention, the slide rod supporting each ring body of the cylinder portion is constantly urged in the direction of the rotation axis, and the diameter of the cylinder portion follows the movement of the rotation axis. It is also characterized in that it is designed to expand and contract.

In the paper making cylinder according to the present invention, a slide rod for supporting each ring member of the cylinder portion is always rotated by a spring connected between a support arm provided at the outer end of the cylinder and the outer circumference of the barrel. It is also urged in the direction, and it is also characterized in that the diameter of the cylinder part is expanded and contracted via a slide rod following the forward and backward movement of the rotating shaft.

[0010]

Since the cylinder cylinder for papermaking according to the present invention is constructed as described above, the diameter of the cylinder cylinder can be easily expanded or contracted simply by sliding the rotary shaft in the longitudinal direction. Paper nets with various patterns and marks can now be replaced. Therefore, various patterns and marks can be formed on Japanese paper simply by changing the paper making net, and not only a large cost reduction but also small lot production is possible.

Further, since a common cylinder cylinder can be used, the space for the storage space can be reduced.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cylinder cylinder for papermaking according to the present invention will be described below in detail with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 designates a shaft cylinder extending in the length direction of a cylinder cylinder 31 for papermaking.
A rotary shaft 2 is held therein so as to be movable back and forth in the length direction. The barrel 1 rotates together with the rotating shaft 2. Reference numeral 3 is a cylinder portion fixed to the shaft cylinder 1 and having a papermaking net 4 for papermaking attached to the outer periphery thereof.

According to the present invention, in the cylinder cylinder 31 for papermaking, the cylinder portion 3 supports a large number of discontinuous ring bodies 5 and each ring body 5 between each ring body 5 and the rotary shaft 2. It is configured by disposing the slide rod 6 via a slide guide 7 attached to the shaft cylinder 1.

In this embodiment, the barrel 1 is replaced by the barrel body 2.
1 and the bearing portions 22 detachably attached to both ends of the barrel body 21, and the slide guide 7 is also detachably attached to the outer surface of the barrel body 21.

The slide bar 6 slidably held in the slide guide 7 has one end abutted on the rotary shaft 2,
A ring body 5 is attached to the outer end via a support arm 8. The support arm 8 is attached at a substantially right angle to the slide rod 6, and a pedestal 9 provided with a groove into which the ring body 5 is fitted is provided at a predetermined interval on the outer surface of the shape along the ring body 5. A small hole 11 is formed in this pedestal 9, and a mounting rod 13 is fitted and inserted in alignment with the small hole 12 of the ring body 5 fitted in the groove so that the ring body 5 is fixed to the support arm 8. It has become.

The slide bar 6 is constantly urged in the direction of the rotation axis 2 by a spring 14 connected between the support arm 8 and the outer periphery of the shaft cylinder 1.

The cylinder portion 3 having the above structure has a predetermined length of 1
It is preferable to form one block and connect a plurality of the blocks to form the cylinder cylinder 31 for papermaking.

The rotary shaft 2 has a taper 2 in its length direction.
3 are formed. The taper 23 is formed in a tubular shape and fitted into the rotary shaft 2. A set screw 24 is attached to the bearing portion 22 at a proper position.
If is loosened, the rotary shaft 2 can be moved back and forth in the axial direction in the barrel 1.

When the rotary shaft 2 is moved forward in the lengthwise direction (arrow A), the taper 23 portion expands the slide rod 6 and the diameter of the cylinder portion 3 increases. Further, when the rotary shaft 2 is retracted in the lengthwise direction (arrow B), the taper 23 part is retracted and the slide rod 6 urged by the spring 14 moves toward the rotary shaft 2 to move the cylinder portion 3 The diameter shrinks.

The paper making net 4 is mounted by fitting the paper making net 4 onto the cylinder part 3 while the diameter of the cylinder part 3 is being reduced, and advancing the rotary shaft 2 in the lengthwise direction (arrow A). The diameter of 3 may be increased, the papermaking net 4 may be fixed, and then the set screw 24 may be tightened. The paper making net 4 is provided with predetermined patterns 32, marks, etc., and the patterns 32, marks, etc. are transferred to Japanese paper such as shoji paper in the paper making process.

The paper making net 4 is provided with predetermined patterns 32, marks and the like by a technique such as silk screen printing.

When the next lot is made, the rotary shaft 2 is retracted in the length direction (arrow B) to reduce the diameter of the cylinder portion 3 and the paper making net 4 can be easily removed. . In this way, by exchanging with the next paper making net 4, expanding the diameter of the cylinder part 3 and fixing the paper making net 4, the next paper making work can be performed.

[0024]

Since the cylinder cylinder for papermaking of the present invention is constructed as described above, the diameter of the cylinder cylinder can be easily expanded or reduced by simply sliding the rotary shaft in the longitudinal direction. It is now possible to quickly replace paper nets with various patterns and marks. Therefore, various patterns and marks can be formed on Japanese paper simply by changing the paper making net, and not only a large cost reduction but also small lot production is possible.

Further, since a common cylinder cylinder can be used, it is possible to save the space for the storage space.

[Brief description of drawings]

FIG. 1 is a partial vertical sectional view showing an embodiment of a cylinder cylinder for papermaking according to the present invention.

FIG. 2 is an enlarged vertical cross-sectional view illustrating a ring body portion of a cylinder portion.

FIG. 3 is a partial cross-sectional view.

FIG. 4 is a schematic view showing an entire cylinder cylinder for papermaking.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shaft cylinder 2 Rotating shaft 3 Cylinder part 4 Paper making net 5 Ring body 6 Slide bar 7 Slide guide 8 Support arm 9 Cradle 11, 12 Small hole 13 Mounting bar 14 Spring 21 Shaft cylinder body 22 Bearing part 23 Taper 24 Set screw 31 Cylinder cylinder for papermaking 32 patterns

Claims (4)

[Claims] 1. A cylinder cylinder for papermaking, comprising: a rotary shaft; and a cylinder part which is supported by the rotary shaft, rotates together with the rotary shaft, and has a papermaking net for papermaking mounted on the outer periphery thereof. It consists of a continuous ring body, and a slide rod that supports each ring body is arranged between each ring body and the rotating shaft, and the rotating shaft is formed in a taper in the length direction of the rotating shaft. By making it possible to move forward and backward, the diameter of the cylinder part expands and contracts via the slide rod according to the forward and backward movement of the rotating shaft, paper is made at the time of expansion, and the paper making net can be exchanged at the time of reduction Cylinder cylinder for use. 2. A shaft cylinder, a rotary shaft which is held in the shaft cylinder so as to be capable of advancing and retracting in the longitudinal direction, and a cylinder portion which rotates together with the rotary shaft and has a papermaking net for papermaking mounted on the outer periphery thereof. In a cylinder cylinder for papermaking, the cylinder part is composed of a large number of discontinuous ring bodies, and a slide rod for supporting each ring body between each ring body and a rotary shaft is provided through a slide guide provided on a shaft cylinder. And the taper is formed in the length direction of the rotating shaft, the diameter of the cylinder part is expanded through the slide rod as the rotating shaft moves forward and backward.
A cylinder cylinder for paper making, characterized in that paper is made when it is reduced and when it is enlarged, and the paper making net is replaceable when it is reduced. 3. A slide rod for supporting each ring body of the cylinder portion is constantly urged in the direction of the rotation axis so that the diameter of the cylinder portion is expanded / contracted in accordance with the advance / retreat of the rotation axis. The cylinder cylinder for papermaking according to Item 1 or 2. 4. A slide rod for supporting each ring body of a cylinder part is constantly urged in a rotation axis direction by a spring connected between a support arm provided at an outer end of the cylinder body and an outer circumference of a shaft cylinder. The cylinder cylinder for papermaking according to claim 3, wherein the diameter of the cylinder portion is expanded / contracted via a slide rod following the advance / retreat of the shaft.