JPH04202842A - Uneven roll and method for using the same - Google Patents

Abstract

PURPOSE:To prepare an uneven roll capable of continuously changing the transfer rate of a sheet material in the width direction of the sheet material, by disposing a means for changing the radius vector of the peripheral wall of an outer cylinder attached about a rotation shaft. CONSTITUTION:An outer cylinder 2 and an inner cylinder 3 are disposed coaxially on a rotation shaft 1, and the peripheral wall of the outer cylinder 2 is constituted of a thin plate 6 and a rubber sheet 7, both being projected or depressed from a parallel state toward the radius vector. Plural rollers 8, 8', 8'' are attached to the inner peripheral wall surface of the cylinder 2, and the cylinder 3 having conical projections 14, 14', 14'' engaged with the rollers are slid in the direction of the shaft to change the shape of the peripheral wall of the outer cylinder from a center-expanded state to a center-depressed state.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to rolls used when conveying, moving, shaping, etc. sheet materials such as fabrics and films, particularly when straightening the texture of fabrics. It is something.

Conventional technology When finishing a fabric as a final product, it is required that the weft threads be as parallel as possible to the warp threads. Such demands have become increasingly strong with recent technological advances, and it is now necessary to maintain the parallelism of the weft threads with high precision.

In this case, especially for fabrics that have been dyed or whose surfaces have been coated with resin to protect them from abrasion caused by solar heat or friction, the shrunken fabric structure is formed so that the weft threads are parallel to the warp threads. This requires considerable skill.

Generally, grain correction is performed using rolls to make the weft threads of the fabric parallel to the warp threads. In grain correction,
A roll consisting of a cylinder with a constant diameter fitted into a bearing is arranged so that it rotates while pressing its cylindrical surface against the surface of the fabric, and a sensor is also arranged to detect the feeding state of the weft thread of the fabric. Then, the selvedges at both ends of the fabric are pulled. Then, while detecting the curved state of the weft yarn with a sensor, the fabric grain is corrected by adjusting the feed speed of each of the edge portions at both ends.

According to this method, in the case of a knitted fabric in which the weft yarns are inclined in a certain direction, the grain can be corrected relatively well by feeding one selvage faster than the other selvage, but the other It is not valid for types of fabrics. That is, the selvage portion of the fabric has less elasticity than other portions, and is also slightly thicker.

Therefore, if the fabric is fed while pulling the selvage portions at both ends, the feed speed at the selvage portions will inevitably be faster than the feed speed at the portions other than the selvage portions, and the fabric will be fed out from the roll with the weft threads curved.

In order to solve this problem, a roll was developed in which the peripheral wall of the cylindrical part of the roll could be expanded in the radial direction using air pressure, making it possible to increase the feed speed at the center in the width direction of the fabric than at the periphery. It has been done. This roll has a rotating shaft (3
0) and a hollow cylindrical part (31) coaxially attached to this
A plurality of air holes (32) are formed in the peripheral wall of the hollow cylindrical portion (31). In addition, the hollow cylindrical part (
A thin rubber plate (33) having a predetermined thickness is stretched in a cylindrical shape with the back side of the thin rubber plate (33) in close contact so as to cover the entire surface of the outer peripheral wall surface of the thin rubber plate (31). 33) is fixed to the cylindrical part (31) so that an airtight state is maintained between the back surface of the hollow cylindrical part (31) and the outer peripheral wall surface of the hollow cylindrical part (31). Further, a hollow cylindrical portion (31) is inserted from one end side of the rotating shaft (30).
A ventilation hole (34) is formed that leads to the internal space of the cylindrical part (31), and the outer peripheral wall surface of the cylindrical part (31) and the rubber are By sending compressed air between the back surfaces of the thin rubber plate (33), the thin rubber plate (33) is expanded and the peripheral wall of the cylindrical portion (31) changes from parallel to the rotation axis (30) in the radial direction. It is designed so that it can be expanded to.

However, in such a roll, the radius of the circular cross section perpendicular to the axis of the cylinder cannot be made very large, because if a large radius is attempted, the area of the rubber sheet will be The area must be larger than the area of the outer circumferential wall of the cylindrical portion, so that the thin rubber plate will float away from the outer circumferential wall of the cylinder when parallel to the rotation axis before expansion. This is because it will cause problems in feeding the fabric.

In addition, when used for a long period of time, the elasticity of the rubber decreases, and if air is not injected into the roll, the thin rubber plate will float off the outer peripheral wall of the roll cylinder, making it impossible to feed the fabric accurately. This results in the following drawback.

Furthermore, in such a configuration, it is difficult to recess the peripheral wall of the cylindrical portion in the radial direction from a state parallel to the rotation axis due to the strength of the rubber sheet, etc., and the peripheral edge in the width direction of the fabric The disadvantage is that the feeding speed of the central part cannot be made higher than that of the central part.

For this reason, it has not been possible to reliably correct the texture using conventional rolls. In addition, even when simply feeding the sheet material, conventional rolls cannot reliably feed the sheet material in parallel.

Therefore, an object of the present invention is to provide a roll that can continuously change the feed speed in the width direction of a sheet material, and to use this roll to rotate a sheet material such as a fabric with extremely high precision. The object is to provide a method that allows feeding parallel to the axis.

Means for Solving the Problems In order to solve the above problems, the present invention provides a roll comprising a rotating shaft and an outer cylindrical part coaxially attached to the rotating shaft, in which the shaft in the outer cylindrical part is means for continuously changing the radius of a circular cross section perpendicular to the axis in the axial direction of the outer cylindrical part, and the peripheral wall of the outer cylindrical part expands in the radial direction from a state parallel to the rotation axis. Alternatively, it is a concavo-convex roll that is capable of shrinking.

In a preferred embodiment of the textured roll according to the invention,
The radius of the circular cross section perpendicular to the axis in the outer cylindrical part is
The means for continuously changing the outer cylindrical portion in the axial direction,
an inner cylindrical portion guided between the rotating shaft and the outer cylindrical portion so as to be slidable in the axial direction coaxially with the rotating shaft and rotatably movable around the rotating shaft;
a driving means for sliding the inner cylindrical portion; and a driving means provided on the outer peripheral wall surface of the inner cylindrical portion so as to protrude in the radial direction at a predetermined interval in the axial direction, and inclined in a constant direction along the rotation axis. a plurality of conical protrusions each having a slope; and a plurality of conical protrusions provided on the inner circumferential wall surface of the outer cylindrical part at positions corresponding to the respective conical protrusions of the inner cylindrical part, and as the inner cylindrical part slides; a plurality of rollers that roll on the slope of the conical protrusion of the inner cylindrical portion in the axial direction of the rotating shaft; and means for constantly bringing the roller of the inner cylindrical portion into pressure contact with the conical protrusion of the inner cylindrical portion.

In another embodiment of the uneven roll according to the present invention, when the circumferential wall of the outer cylindrical part is parallel to the rotation axis, the roller of the outer cylindrical part is arranged on the slope of the conical protrusion of the inner cylindrical part. The angles of the slopes of the plurality of conical protrusions provided on the outer peripheral wall surface of the inner cylindrical part are largest at the center of the inner cylindrical part and gradually increase as they go from the center to both ends. It is gradually getting smaller.

Further, the present invention provides a textured roll in which the peripheral wall of the cylindrical portion can protrude or indent in the radial direction from a state parallel to the rotation axis at a predetermined position, and the outer peripheral wall surface of the cylindrical portion of the textured roll is aligned with the surface of the sheet material. is brought into contact with a predetermined pressure, and the sheet material is sent by rotationally driving the uneven roll or pulling the sheet material, and the parallelism of the sheet material to the rotation axis of the uneven roller is detected, and the detection result is By protruding or recessing the outer peripheral wall surface of the cylindrical portion of the uneven roll according to the above, and changing the feeding speed of the sheet material in the width direction of the sheet material,
The method is characterized in that the sheet material is fed parallel to the uneven roll.

In the structure described above, for example, if it is desired to make the feeding speed of the central part of the sheet material faster than the feeding speed of the peripheral part,
The radius of the circular cross section perpendicular to the axis in the outer cylindrical portion of the uneven roll is the largest at the center of the roll and gradually becomes smaller from the center toward the peripheral edge.

As a result, as the roll rotates, the distance that the central portion of the cylindrical surface of the roll feeds the sheet material becomes longer than the distance that the peripheral portion of the cylindrical surface of the roll feeds the sheet material.

Conversely, if it is desired that the feed speed in the center of the sheet material be slower than the feed speed in the peripheral portion, the radius of the circular cross section perpendicular to the axis in the outer cylindrical portion of the roll is the smallest in the center of the roll, If the distance gradually increases from the center toward the periphery, as the roll rotates, the center of the cylindrical surface of the roll will feed the sheet material over a longer distance than the periphery of the cylindrical surface of the roll will feed the sheet material. shorter than the distance.

In this way, while detecting the parallelism of the sheet material to the roll, the outer cylindrical portion of the roll is appropriately deformed according to the detection result, and the sheet material is fed while changing the feed speed of the sheet material in its width direction. allows the sheet material to be fed parallel to the rolls.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the uneven roll according to the present invention includes a rotating shaft (1), an outer cylindrical portion (2) coaxially and integrally rotatably attached to the rotating shaft (1), Axis of rotation(
1) and the outer cylindrical part (2), the rotating shaft (1
) and can slide in the axial direction coaxially with the rotation axis (
an inner cylindrical part (3) guided rotatably around the inner cylinder (3);
).

The outer cylindrical part (2) is made of SUS or 5S41 thin plate (6
) A cylinder with a two-layer structure made of a rubber sheet (7) or something similar pasted with adhesive on the outer surface of the rotating shaft (1 ) is fixed to the rotating shaft (1) by a boss (4) extending in a cross shape in the radial direction. The rubber sheet (7) has a function of generating an appropriate frictional force between the roll surface and the sheet material when feeding the sheet material such as cloth. Further, a cylindrical guide member (5) is attached to the inner peripheral edge of the entrance of the opening at the other end (right end in the drawing).

On the inner circumferential wall surface of the outer cylindrical portion (2), there are positions at predetermined intervals in the axial direction, for example, in this embodiment, the inner circumferential wall surface of the outer cylindrical portion (2)
), and a plurality of rollers (8) at three positions: a central position, and left and right positions equidistant from the central position toward both ends.

(8'), (8'') are installed along the inner circumferential circle of the outer cylindrical part (2), separated by a certain center angle.These rollers (8), (8''), ( 8') is arranged such that its axis of rotation is perpendicular to the axis of the outer cylindrical part (2), and is fixed to the thin plate (6) of the outer cylindrical part (2) by a bolt (20). Also, rollers (8), (8'), (8"
) is the central position, left position! It is preferable that they are arranged as densely as possible on the inner circumference of the outer cylindrical part (2), and it is preferable that 5 to 10 pieces are attached at each position on the right side.

The inner cylindrical part (3) includes a peripheral wall (3a) and a rotating shaft (1) attached to the - end side (left end side in the drawing) of the peripheral wall (3a).
), and the rotating shaft (1
) and a second bush (12) for
In this way, the inner cylindrical portion (3) is capable of sliding movement along the axial direction of the rotation shaft (1), and also
It is possible to rotate around the outer cylindrical part (2).
The inside can be freely entered through the opening on the right end side. Further, as the inner cylindrical portion (3) slides, the peripheral edge of the ring-shaped protrusion (12a) formed on the second bushing (12) guides the opening entrance of the outer cylindrical portion (2). It is adapted to slide on the surface of the member (5).

On the outer wall surface of the inner cylindrical part (3), at predetermined intervals in the axial direction, at positions corresponding to each of the three positions where the rollers (8) of the outer cylindrical part (2) are attached, A conical protrusion (14) is formed that protrudes in the radial direction.

These conical protrusions (14) are inclined downwardly in a certain direction, in this embodiment to the left.
The inclination angle θ is the conical protrusion (
14) are the same, and the protrusion in the center position (14)
The inclination angle of is larger than these. Regarding the positional relationship between the rollers (8) of the outer cylindrical part (2) and the conical protrusion (14) of the inner cylindrical part (3), each roller (8) has a slope of the conical protrusion (14). When located at the top center, the cylindrical surface of the outer cylindrical portion (2) is aligned with the rotation axis (1
) is set parallel to.

A ring-shaped spring (10), (
10'), (10') are each roller (8), (8
It is stretched between the hook-shaped protrusions (9), (9') and (9'') formed on the support bases of ') and (8''). These springs (10), (10'),
(10 mm urges the circumferential wall of the outer cylindrical portion (2) to contract in the radial direction, and the rolls (8), (8°), (8”) of the outer cylindrical portion (2), Inner cylindrical part (
3) Corresponding conical protrusion (14), (14°)
+ (14") acts so as to be in constant pressure contact with the slope.

The outer end of the second bush (12) is connected to a third bush (15) disposed outside the second bush (12) via a bearing (13). (12) and the third bush (15) are independently rotatable around their respective axes.

Further, the rotation shaft (1) is connected to the connecting portion of the third bushing.
The cylindrical part extending in the axial direction has a screw (1 screw) on its outer wall surface.
6), and this screw (16) is engaged with a screw formed in the central circular opening of a worm wheel (17) that pairs with the worm (18).

In this way, as the worm (18) rotates, the worm wheel (17) rotates, and the third bush (15) moves from side to side. In conjunction with this, the inner cylindrical part (3) slides left and right, and each roller (
8), (8°), (8°) correspond to the corresponding conical projections (14), (14°), (1
4") rolls up and down along the axial direction.

In this case, when the inner cylindrical part (3) is located on the leftmost side and each roller (8) is at the highest position of the slope of the conical protrusion (14), the outer cylindrical part (2) has a circular shape perpendicular to the axis. The radius of the cross section is maximum at the center of the outer cylindrical portion (2) and gradually decreases from the center toward both ends. That is, as shown in FIG. 4, the peripheral wall of the outer cylindrical portion (2) has a shape that projects most in the radial direction at the center and gradually becomes depressed toward both ends. On the other hand, the inner cylindrical part (3) is located on the rightmost side, and each roller (8) has a conical protrusion (1
4), the radius of the circular cross section perpendicular to the axis of the outer cylindrical part (2) is at the lowest position of the slope of the outer cylindrical part (2)
It is minimum at the center and gradually increases from the center to both ends. That is, as shown in FIG. 5, the peripheral wall of the outer cylindrical portion (2) has a shape that is most concave in the radial direction at the center and gradually protrudes toward both ends.

The uneven roll according to the present invention feeds, moves, and
It is effective when performing molding, etc., and is particularly effective when straightening the grain of fabric.

When straightening the fabric, the roll according to the present invention is placed at a predetermined position so that the outer circumferential wall surface of the outer cylindrical part (2) contacts the surface of the fabric with appropriate pressure, and the feeding state of the weft threads of the fabric is detected. Place the sensor.

Then, while pulling both sides of the fabric at the same feed speed, the worm (18) is driven according to the detection signal of the sensor, and the peripheral wall of the outer cylindrical part (2) is moved so that the weft threads are parallel to the warp threads. If you want to change the shape appropriately, that is, if you want to make the feed speed at the center part in the width direction of the fabric larger than that at the peripheral part, as shown in Fig. 4, the peripheral wall of the outer cylindrical part (2) It is sufficient to make the shape protrude the most in the radial direction at the center and gradually become concave toward both ends.On the other hand, if you want to make the feed speed at the periphery in the width direction of the fabric higher than the feed speed at the center, As shown in FIG. 5, the outer cylindrical portion (2) may be adjusted so that its circumferential wall is most depressed in the center and gradually protrudes toward both ends.

In addition, as shown in Figure 6, two conventional rolls (3
5) and (36) are arranged in parallel at intervals, and between them the uneven roll (37) according to the present invention is arranged in parallel, and the three rolls (35), (36), (37) are arranged in parallel.
), the sheet material (38) such as cloth can be fed in parallel with certainty.

In this way, according to the uneven roll according to the present invention, the feeding speed of the sheet material of fabric or film can be made different between the central part and the peripheral part in the width direction of the sheet material, and the sheet material can be fed with extremely high precision. It can be fed parallel to the roll rotation axis. Further, the uneven roll according to the present invention has a simple structure and can be manufactured at low cost.

Effects of the Invention As described above, according to the present invention, the cylindrical surface of the textured roll can be made to protrude or be depressed in the radial direction from a state parallel to the rotation axis, so that it can be used for sheet materials such as fabrics and films. The feed speed can be varied continuously across its width, ensuring that the sheet material is fed parallel to the rolls.

Therefore, for example, when this uneven roll is used for straightening the grain of a fabric, it is possible to make the weft threads parallel to the warp threads with high precision, and it is considered that this roll will make a significant contribution to the industry.

Moreover, the uneven roll according to the present invention has a simple structure and has the advantage that it can be manufactured easily and inexpensively.

[Brief explanation of the drawing]

FIG. 1 is a sectional view taken along the rotational axis of the uneven roll according to the present invention, and FIG. 2 shows the relationship between the roller of the outer cylindrical part and the conical protrusion of the inner cylindrical part of the uneven roll shown in FIG. FIG. 3 is a front view of the roller shown in FIG. 2, FIGS. 4, 5, and 6 are schematic diagrams showing how the roll according to the invention is used, and FIG. FIG. 8 is a partially cutaway side view showing a conventional roll whose cylindrical surface can be expanded by air pressure.
FIG. 3 is a partial cross-sectional view of the roll shown in the figure. (1)...Rotating shaft (2)...Outer cylindrical part (3)...Inner cylindrical part (4)...Boss (8)...Roller (10)... ...Spring (11)...First bushing (12)...Second bushing (13)...Bearing (14)...Conical protrusion (15)...・Third bush (17)... Worm wheel (18)... Warm representative Shinji Kenbu (1 other person)

Claims (4)

[Claims] (1) In a roll consisting of a rotating shaft and an outer cylindrical part coaxially attached to the rotating shaft, the radius of the circular cross section perpendicular to the axis of the outer cylindrical part is set in the axial direction of the outer cylindrical part. 1. A textured roll having a means for continuously changing the texture, wherein the peripheral wall of the outer cylindrical portion can protrude or be depressed in the radial direction from a state parallel to the rotation axis. (2) Means for continuously changing the radius of a circular cross section perpendicular to the axis of the outer cylindrical portion in the axial direction of the outer cylindrical portion is arranged between the rotation axis and the outer cylindrical portion, and an inner cylindrical portion guided so as to be able to slide coaxially in the axial direction and rotatably move around the rotation axis; a driving means for sliding the inner cylindrical portion; and an outer circumferential wall surface of the inner cylindrical portion; a plurality of conical protrusions provided to protrude in the radial direction at predetermined intervals in the axial direction and each having a slope inclined in a constant direction along the rotation axis; It is provided at a position corresponding to each conical protrusion of the inner cylindrical part, and rolls in the axial direction of the rotating shaft on the slope of the conical protrusion of the inner cylindrical part as the inner cylindrical part slides. a plurality of rollers that move; and a means for urging the circumferential wall of the outer cylindrical portion in a direction to contract in the radial direction and constantly bringing the rollers of the outer cylindrical portion and the conical protrusion of the inner cylindrical portion into pressure contact. The uneven roll according to claim 1, characterized in that: (3) When the peripheral wall of the outer cylindrical portion is parallel to the rotation axis, the roller of the outer cylindrical portion is located at the center of the slope of the conical protrusion of the inner cylindrical portion; The angle of the slope of the plurality of conical protrusions provided on the outer peripheral wall surface of the inner cylindrical portion is greatest at the center of the inner cylindrical portion, and gradually decreases from the center toward both ends. The uneven roll according to claim 2. (4) A textured roll whose peripheral wall of the cylindrical portion can protrude or be depressed in the radial direction from a state parallel to the rotation axis is arranged at a predetermined position, and the outer peripheral wall surface of the cylindrical portion of the textured roll is placed on the surface of the sheet material in a predetermined manner. Contacting with pressure, feeding the sheet material by rotationally driving the uneven roll or pulling the sheet material, and detecting the parallelism of the sheet material to the rotation axis of the uneven roller, and depending on the detection result. The sheet material can be fed parallel to the uneven roll by protruding or recessing the outer peripheral wall surface of the cylindrical part of the uneven roll and changing the feeding speed of the sheet material in the width direction of the sheet material. How to characterize it.