JP2895185B2 - Cloth opening correction method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention is a novel method and apparatus for correcting openings that occur in a cloth having a relatively low density with respect to the diameter of a yarn used. In particular, the present invention is effective as a method and an apparatus for correcting apertures of cloth used as industrial material, for example, coated cloth and cloth for fiber-reinforced plastic.

(Prior Art) There are various types of knitted fabrics used as industrial materials, and among them, many knitted fabrics used as sheets have a relatively coarse density and a mesh structure. When a coating such as rubberization is applied to such a knitted fabric, irregularities may occur on the surface, and the commercial value may be reduced. In fiber reinforced plastic (hereinafter referred to as FRP) cloth, fibers and resins are unevenly distributed as a group.
It also results in lowering the physical properties of.

Conventionally, as a method of correcting the opening of such a cloth, clogging by a roller press has been performed, but in such a correction method, the fiber is easily cut, and the FRP is particularly fragile such as carbon fiber or glass fiber. It cannot be used in FRP using fiber.

(Problems to be Solved by the Invention) That is, the cloth used for industrial sheets and FRP has a relatively low density. To coat the cloth with a resin or impregnate it with a matrix resin, first spread the constituent yarns. Although it is necessary to correct the aperture, it is impossible to spread the fiber due to the physical properties of the constituent yarns or breakage of the fiber at the time of spreading, and there is a strong demand for the development of an appropriate aperture correction means.

Accordingly, an object of the present invention is to develop a cloth opening correction method and apparatus which can be effectively applied to yarns having any physical properties.

(Means for Solving the Problems) In order to achieve this object, the present invention provides a cloth opening correction method and a device for rolling a spherical body under a pressurized state through a thin film on a cloth surface. And

Hereinafter, the basic configuration of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic view for explaining the basic structure of the present invention, in which a plurality of spherical bodies 4 arranged on a cloth 5 composed of a warp 1 and a weft 2 are rolled while being pressed against the cloth 5. The moving state is shown as a cross-sectional view.

In the figure, when the spherical body 4 rotates in the direction of the arrow,
The relative position of the cloth 5 and the spherical body 4 moves, that is, the spherical body 4 rolls on the cloth 5. The present invention is characterized in that the spherical body 4 rolls without sliding on the cloth 5.

An object of the present invention is to develop a new method and apparatus for reliably correcting the opening of such a cloth 5 and to obtain a cloth 5 having no opening, which is a basic feature of the method of the present invention. The first is that the spherical body 4 rolls without rubbing the surface of the cloth 5, and the second is that a pressurized part and a non-pressurized part by the spherical body 4 exist.

As the spherical body 4 used in the method of the present invention, a metal sphere having a smooth surface is most common, but when the spherical body 4 is rolled at a high speed, a resin sphere can also be used.

The size of the sphere 4 needs to be large enough to roll on the surface of the cloth 5, and therefore should be determined by the cloth 5 which is subject to the aperture correction, but generally has a diameter of 5 mm or more.

If the warp / weft constituting the cloth 5 is not a spherical body having a diameter sufficiently large with respect to the diameter of a yarn existing in a direction perpendicular to the moving direction of the spherical body 4, one of the spherical bodies 4 In some cases, the thread may enter into the thread and cause misalignment (misregistration) of the thread.

Therefore, in the present invention, as shown in FIG. 2, a thin film 6 is interposed between the spherical body 4 and the cloth 5 indicated by a broken line to also prevent the cloth from being stained by the spherical body 4. It is necessary that the film 6 be flexible so that the spherical body 4 contacts the cloth 5 with a limited area and does not hinder the free portion. Generally, a resin film of about 20 μm to 0.1 mm is used. You. The resin film 6
Has the effect of preventing frictional movement (non-rolling movement) of the spherical body 4 and preventing misalignment of the cloth 5 as described above.

Further, in order to effectively carry the cloth 5 and pressurize the spherical body 4 to the cloth 5, and to enable smooth rolling movement of the spherical body 4, a backup material 7 capable of maintaining a planar shape is provided. Preferably, a resin, a rubber, a belt, or a metal belt is used, and the backup material (hereinafter, referred to as a belt-like material) 7 is moved at the same speed as the cloth 5.

(Operation) FIG. 3 shows a state in which the cloth 5 is open. In general, the cloth 5 for industrial materials has a gap between the warp 1 and the weft 2 as shown in FIG. The ratio of the area of the openings 3 to the area of the entire cloth 5 is greater as the warp / weft woven fabric density is lower. FIG. 3b is a plan view of a cloth 5 having no openings at all, and a cloth 5 having no such openings is preferable in the FRP cloth.

In order to obtain the cloth 5 without such openings, in the present invention, the spherical body 4 rolls and moves on the cloth 5 as described above, so that the relative displacement between the warp 1 and the weft 2 constituting the cloth 5 (or Is generally expressed as an eye misalignment.).

When the sphere 4 rolls on the cloth 5, the sphere 4 pressed against the cloth 5 causes the weft 1 and the warp 2 to have a widening action. At this time, the portion not in contact with the spherical body 4 is free, and the presence of this free portion is effective in widening the yarn constituting the cloth 5. For example, when the entire width of the cloth 5 is pressed by a roller, there is no free portion in the width direction and the whole is restrained, so that the action of widening the yarn is extremely small.

(Example) Hereinafter, an example for embodying the aperture correction method of the present invention will be described together with its mechanism.

Embodiment 1 FIG. 4 shows an example of an apparatus according to an embodiment of the present invention.
A plurality of spherical bodies 4 whose positions are mutually determined via a spacer 9 are arranged on the upper side, and the spherical bodies 4 are in contact with a cloth 5 via a film 6. The cloth 5 is pressed against the spherical body 4 by the belt 7 and moves at the same speed as the belt 7, for example, in the direction of the arrow in the drawing. When the support plate 8 is moved in an arbitrary direction in such a state, the spherical body 4 rolls on the cloth 5 surface.

When the support plate 8 moves at the same speed as the cloth 5 in the direction opposite to the arrow, the relative position between the cloth 5 and the spherical body 4 does not change and no rolling movement occurs. Rolling movement on the cloth 5 occurs.

When the spherical body 4 reciprocates in the direction along the direction of the warp 1 constituting the cloth 5, the warp 1 is mainly widened, and when reciprocating along the direction of the weft 2, the widening of the weft 2 is mainly performed. Done.

When the support plate 8 makes a circular or elliptical motion in the plane, the warp 1 and the weft 2 are uniformly widened. In the mechanism shown in FIG. 4, when the support plate 8 reciprocates or circularly moves within a certain stroke as described above, the spacer 9 and the spherical body 4 have a half cross length of the cross 5. Therefore, it is necessary to release the pressure applied to the cloth 5 in a range where the spherical body 4 does not come off from the support plate 8 and return the position of the spherical body 4 to the current state. The apparatus shown in this embodiment moves the support plate 8 in a state where a plurality of spheres 4, 4,... Placed on the support plate 8 are pressed against the cloth 5 via the film 6. Are rolled on the cloth surface to thereby move the spherical bodies 4, 4,....

Embodiment 2 FIG. 5 shows another embodiment of the apparatus. The support plate 10 is formed with a number of spherical concave portions, into which a number of bearing balls 11 are inserted.
Is installed. Such a structure is called a free bearing.

The cloth 5 comes into contact with a number of spherical bodies 4 in a free bearing state via a film 6, and is conveyed under pressure by a belt 7. When the support plate 10 is moved in this state in the same manner as in the first embodiment, the sphere 4 is rolled and moved on the cloth surface without changing the relative position with respect to the support plate 10, and as shown in the first embodiment. There is no need to release the pressurization and return the spherical object 4 to its original position, and there is an advantage in that the cloth 5 can be continuously moved.

The structure of the free bearing used in this device can be an oil film structure instead of using the bearing ball 11 as shown in FIG. 5, and the spherical body 4 rotates without moving at that position. Any structure can be used.
It is not limited to the structure shown in the figure.

This apparatus is an aperture correction apparatus characterized by using a spherical body in a free bearing state in the first embodiment.

Example 3 The method of the present invention can also be carried out with the position shown in FIG. FIG. 6a is a side view of the device of this embodiment,
FIG. 2B is a view taken along the line AA of FIG. As shown in FIG. 6, according to the present embodiment, the cloth 5 to be corrected is conveyed by the belt 7 and the film 6 is laminated on the guide roll 12, and then supplied to the apparatus of the present invention. In this embodiment, the rotating shaft 13 is fitted so that the plurality of spherical bodies 4 are fitted to the rotating shaft 13.
It is arranged on the outer periphery of. The positions of the spherical bodies 4, 4, 4,... Are held by the cylindrical holder 14. The cloth 5 is guided through a guide roll 12 to a peripheral surface of a roll body (hereinafter, referred to as a spherical roll) having a plurality of spherical bodies 4 on the surface as shown in FIG. Arrow direction
When rotated to 15, the spherical body 4 rolls on the cloth 5 via the film 6. In such a device, the rotating shaft 13
And the moving speed of the belt 7 or the cloth 5 can be set independently of each other, and the action of the spherical body 4 can be set arbitrarily. Further, the pressure required between the cloth 5 and the spherical body 4 can be adjusted by the tension of the belt 7.

In addition, the guide roll 12 allows the cloth 5 to be in contact with the outer circumference of the ball roll as long as possible to increase the number of application points, and the cloth 5 placed on the outer circumference of the belt 7 on the guide roll 12 At the time of contact, the belt 5 is compressed by the belt 7, so that the warp 1 constituting the cloth 5 is mainly relaxed, and the degree of freedom with respect to the width is increased, so that there is an advantage that the effect of correcting the aperture can be enhanced.

In the device described above, the rolling movement of the spherical body 4 is performed along the warp 1 of the cloth 5. Therefore, it is mainly effective for widening the warp.

On the other hand, as shown in FIG.
When a thrust motion is given as shown in FIG. 16, the rolling movement direction of the spherical body 4 is the weft direction of the cloth 5, which is effective for widening the weft 2.

Accordingly, in the apparatus of this embodiment, by performing the thrust motion simultaneously with the rotation motion on the rotary shaft 13, it is possible to simultaneously perform the opening correction by widening the warp 1 and the weft 2 constituting the cloth 5. However, it is also possible to use two or more ball rolls to configure the apparatus so as to make only a single motion of a rotational motion and a thrust motion, respectively.

This device can perform either a rotational motion or a thrust motion, or both at the same time, and rolls on the cloth surface via the film 6 in a state where a plurality of spherical bodies arranged on the outer periphery of the rotating shaft are pressed. An aperture correction device characterized by having such a configuration.

(Effects of the Invention) As described in detail above, the present invention relates to a cloth opening correction method and apparatus for rolling a spherical body under a pressurized state on a cloth surface via a thin film body, and an apparatus therefor. As shown, it consists of equipment with extremely simple mechanisms, industrial materials and FR
This is a very useful invention for obtaining high-quality cloth used for P and the like.

[Brief description of the drawings]

FIG. 1 is an explanatory view of the operation of the basic structure of the present invention, FIG. 2 is a side view showing a specific example of the same, FIG. 3 is a cross-sectional view before and after opening correction, and FIGS. It is a schematic structure figure of a typical example device. Description of main parts in the drawing 1... Warp 1, 2... Weft, 4... Spherical body 5... Cloth (knitted fabric), 6... Film 7.

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) D06C 29/00 C08L 5/04

Claims (4)

(57) [Claims] 1. A method for correcting the opening of a cloth in which a spherical body is rolled and moved under a pressurized state on a cloth surface via a thin film body. 2. A support plate for holding a plurality of spherical bodies on its surface in a freely rotatable manner, means for moving the support plate, and a thin film member,
A cross aperture correction device having a structure in which the spherical body rolls on the cloth surface under a pressurized state through a thin film body by moving the support plate. 3. An apparatus as claimed in claim 2, wherein the means for holding the spherical body on the support plate so as to freely rotate is a bearing ball or oil. 4. A plurality of spherical bodies are arranged on the outer periphery of a rotating shaft that performs either a rotational movement or a thrust movement or both of them, and the spherical bodies press the cloth surface via a thin film body. Cloth opening correction device having a structure that rolls down.