JPS642683B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method for winding a foamed synthetic fiber, and more specifically, a foamed polyurethane sheet fed out by a feeding mechanism is cut in the longitudinal direction by a slitter to form a plurality of synthetic fibers. The present invention relates to a winding method for winding these fibers into a roll after forming them into fibers.

BACKGROUND OF THE INVENTION Conventionally, foamed synthetic fibers such as foamed polyurethane are used to obtain woven fabrics for use as materials for removing dust or dirt, for example.

The foamed synthetic fiber used here has a width and thickness of
It is about 10mm to 3mm in shape and exactly like a udon.

Generally, this type of synthetic fiber is obtained by cutting a foamed polyurethane sheet as a synthetic fiber material in the longitudinal direction with a slitter. That is, a foamed polyurethane sheet wound into a roll is fed out by a feeding mechanism composed of a group of rollers, and a plurality of fibers having a predetermined width are formed by a slitter installed in the feeding mechanism. After cutting, these fibers are wound up using a winding tool consisting of a winding roll or a winding bobbin.

In other words, the foamed synthetic fiber cut by the sliver is brought into contact with the surface of the winding tool with its starting end, and then the winding tool is rotated at a winding speed that is synchronized with the feed speed of the delivery mechanism. The material is wound while ensuring a predetermined tension.

Problems to be Solved by the Invention However, since foamed synthetic fibers have extremely high elastic properties, they are easily elastically deformed by small external forces. Therefore, when a tightening force is applied during winding, a difference occurs in the cross-sectional shape due to elastic deformation.
As newly wound fibers get stuck between already wound fibers, or as the winding diameter gradually increases, deformation occurs especially at the ends of the winding part.
A tangle phenomenon occurs in which the fibers cannot be wound properly.

For this reason, in the next weaving process, it is necessary to use foamed synthetic fibers that are poorly wound, which in fact has the problem of being extremely cumbersome to handle and significantly reducing workability.

Taking these points into consideration, the inventor of the present invention has developed a synthetic resin sheet that has been previously wound into a roll, with its winding shaft vertically oriented, and is cut into rings of a constant width starting from the bottom. We tried a method in which the synthetic resin fibers were hung horizontally on a loom in the weaving process. However, according to this method, the width of the lower synthetic resin fibers inevitably increases due to the weight of the synthetic resin sheet, making it difficult to cut them into uniform widths.

The present invention was made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a method for winding up a foamed synthetic fiber that can wind up the foamed synthetic fiber in an appropriate winding state.

Means for Solving the Problems In order to achieve the above object, the method for cutting and winding foamed synthetic resin fibers according to the present invention provides a method for cutting and winding foamed synthetic resin fibers by moving a synthetic resin sheet wound into a roll forward through a plurality of free rollers. a step of cutting the fed synthetic resin sheet into a plurality of fibers having a predetermined width by two drive rollers 6 and 7 and a slitter interposed between the drive rollers; and a step of cutting the synthetic resin sheet into a plurality of fibers having a predetermined width. a step of uniformly overlapping a sheet for maintaining the rolled state over the entire width direction of the sheet on at least one side in the thickness direction of the driving roller 7;
the slitter is a drum having a plurality of disc cutters and a circumferential groove into which the peripheral edge of each disc cutter is fitted. The disc cutter is movable in the vertical direction following the vertical movement of the jack and is capable of approaching and separating from the drum, and the winding tool has an upward slope with respect to the horizontal plane. It is rotatably supported by a receiving member, and the sheet for maintaining the wound state is rotatably supported above the drive roller 7.

Function In this invention, since the sheet for maintaining the wound state is interposed between the wound layers of the foamed synthetic fiber, it is possible to prevent the fibers on the outer periphery of the winding from cutting into the fibers on the inner periphery of the winding. Slip and tilt in the cross-sectional direction of the fibers can be prevented.

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

FIG. 1 is a side view showing an example of a device necessary for carrying out the present invention. In the figure, 1 is a foamed synthetic resin sheet, which in this embodiment is made of a foamed polyurethane sheet, and is detachably attached to a frame 2. It is supported by being wound around an attached roller 3, and sent out by a sending mechanism 8, which is made up of a roller group consisting of an auxiliary roller 4, a tension adjustment roller 5, and drive rollers 6 and 7.

Reference numeral 9 indicates a slitter, and a plurality of disc cutters 9A are interposed between the drive rollers 6 and 7 of the feeding mechanism 8 and are set at a predetermined interval in the axial direction.
and a drum 9B having circumferential grooves into which the peripheral edges of these disk cutters 9A are fitted, respectively, are used to cut and form the foamed synthetic resin sheet 1 into a plurality of fibers each having a predetermined width dimension. do.

In this embodiment, the disk cutter 9A is supported by the arm 12 which swings vertically about the fulcrum 11 in accordance with the vertical movement of the jack 10, and the disk cutter 9A is moved against the drum 9B. It is configured so that it can be attached and detached.

Reference numeral 13 denotes a winding device consisting of a roller or a bobbin, and the foamed synthetic fiber 1 obtained by the slitter 9 is
In order to wind up A, it is rotatably and rollably supported by a receiving member 14. Further, a rolled state maintaining sheet 15 wound into a roll is rotatably supported on one side of the frame 1.

Next, winding of the foamed synthetic fiber 1A will be explained.

The foamed synthetic resin sheet 1 as a synthetic fiber material wound around the roller 3 is fed out by a feeding mechanism 8 constituted by a group of rollers, and is slit into a predetermined shape by a slitter 9A interposed in the feeding mechanism 8. A plurality of foamed synthetic fibers 1A having a width dimension are cut and formed.

As shown in FIG. 2, the sheet 15 for maintaining the rolled state is applied to the upper surface of the starting end of the foamed synthetic fiber 1A in the thickness direction over the entire width direction. In this embodiment, a paper sheet is used as the sheet 15 for maintaining the rolled state.

The foamed synthetic fiber 1A to which the sheet 15 for maintaining the rolled state is applied over the upper surface in the thickness direction and the entire width direction is wound around the circumferential surface of the winding tool 13,
Thereafter, the winding tool 13 is rotated according to the feed speed of the feeding mechanism 8, that is, the rotation of the drive roller 7 in this embodiment, and the sheet 15 for maintaining the winding state is placed on the upper surface of the multi-filament fiber 1A over the entire width direction. is continuously wound up in a polymerized state.

By winding the foamed synthetic fiber 1A in the above-described manner, the sheet 15 for maintaining the wound state is interposed between the wound layers of the foamed synthetic fiber 1A, as shown in FIG. The foamed synthetic fiber 1A on the outer periphery of the winding does not cut into the fiber 1A side. Moreover, since slippage and inclination in the cross-sectional direction are suppressed compared to when the foamed synthetic fibers 1A are placed in direct contact with each other on the inner and outer peripheries, the selvedges 1a, 1a at both ends do not collapse, and the winding diameter gradually increases. Also, there is no risk of entanglement occurring.

In the above embodiment, a method is described in which the sheet 15 for maintaining the wound state is superposed on the upper surface of the foamed synthetic fiber 1A cut by the slitter 9 and wound up. However, the present invention is not limited to this, and even if the sheet 15 for maintaining the rolled state is superposed on the lower surface or both upper and lower surfaces of the foamed synthetic fiber 1A and then wound, the same effect as in the above embodiment can be obtained.

Effects of the Invention As explained above, according to the present invention, at least one side in the thickness direction of a plurality of foamed synthetic fibers cut and formed by a slitter is used to maintain the wound state over the entire width direction. Since the sheet is uniformly polymerized and then wound, the foamed synthetic fibers on the outer periphery of the winding do not cut into the foamed synthetic fibers on the inner periphery of the winding, and even if the winding diameter gradually increases, the wound part remains unchanged. No deformation occurs on the ears at both ends. Therefore, the foamed synthetic fibers can be appropriately wound without becoming tangled, and there is an advantage that handling in the next weaving process is facilitated.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an example of an apparatus necessary for carrying out the invention, FIG. 2 is a cross-sectional explanatory view of the initial winding state, and FIG. 3 is a cross-sectional view of the winding state. 1... Foamed synthetic resin sheet, 1A... Foamed synthetic fiber, 8... Feeding mechanism, 9... Slipper, 1
5... Sheet for maintaining the winding state.

Claims (1)

[Claims] 1. A step of feeding a synthetic resin sheet wound into a roll forward through a plurality of free rollers,
A step of cutting the fed synthetic resin sheet into a plurality of fibers having a predetermined width using two drive rollers 6, 7 and a slitter interposed between the drive rollers, and cutting the cut fibers into a plurality of fibers in the thickness direction. The process includes a step of uniformly overlapping a sheet for maintaining the rolled state over the entire widthwise area of the sheet on at least one side, and a step of winding the sheet onto a winding tool that rotates in accordance with the rotation of the drive roller 7. The slitter is composed of a plurality of disk cutters and a drum having circumferential grooves into which the peripheral edges of the disk cutters are respectively fitted, and the disk cutter follows the vertical movement of the jack. It is movable in the vertical direction and can be moved toward and away from the drum.
The winding tool is rotatably supported by a receiving member having an upward slope with respect to a horizontal plane, and the sheet for maintaining the winding state is rotatably supported above the drive roller 7. A method for cutting and winding a foamed synthetic resin fiber.