JPH04370230A - Fiber crimper - Google Patents

Abstract

PURPOSE:To suppress occurrence of flaws by installing a side ring surface on an inscribed roller rotating at an equal peripheral speed in the same direction as that of a ring roller in a specific state. CONSTITUTION:Sides (a) and (b) on both sides of a roller surface 4 of a ring roller 1 and ring surfaces (c) and (d) on both sides of a roller surface 14 of an inscribed roller 5 are formed into respective mutual opposite tapered surfaces. The ring surfaces (c) and (d) of the side ring and the sides (a) and (b) of the roller which tend to separate by formation of a compressed gap are mutually kept in a pressure contact state by movement of a rotating shaft 6 urged by a coil spring 9 and the inscribed roller in the shaft direction.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention is a method of creating waves by passing chemical fibers formed into a straight line by a spinning device between two rollers that rotate while pressing against each other and compressing the fibers. This invention relates to a crimping device.

0002

BACKGROUND OF THE INVENTION Conventional fiber crimping devices include those using two circumscribing rollers as disclosed in Japanese Patent Publication No. 43-908, for example, and those using two rollers in a circumscribing manner as in Japanese Patent Publication No. 1-201540, for example. An inscribed type in which a small diameter roller is inscribed in the inner peripheral surface of a large diameter ring roller, and the rollers are rotated in the same direction at a constant circumferential speed, and the contact area with both rollers is the nip area. This invention belongs to the latter category.

0003

[Problem to be Solved by the Invention] In the internal type crimping device, both sides of the nip section formed by the ring roller and the internal roller have ring surfaces perpendicular to the circumferential surfaces of the two rollers. The ring prevents the fibers from protruding or popping out to the sides.

[0004] Now, to explain the case where this side ring is integrally formed on the side surface of the internal roller in the form of a flange, the contact between the ring surface of the side ring and the side surface of the ring roller is larger than that of the internal roller. Because of the diameter, the wheels start before the nip section and continue until they leave after passing the nip section, and during operation they always remain in a rotating state in which they are closest to each other. (See Figures 3 and 4)

[0005] Therefore, if there is a lack of rigidity or precision in members such as rollers or rings, vibrations of the shaft or machine body, unevenness or fluctuation of fibers passing through the nip section, etc., the ring surface of the side ring and the roller may become distorted. Contact with the side surfaces of the machine causes flaws, which grow during operation, trapping fibers or causing them to wrap around the rollers.
This was also a cause of the inability to continue normal operation. To this end, the problem to be solved in this type of device is to avoid contact between the ring surface of the side ring and the side surface of the roller as much as possible, while at the same time ensuring that both sides of the nip section are regulated on both sides. It had become.

[0006]

[Means for Solving the Problems] Therefore, the present invention provides a relatively large-diameter ring roller that rotates in one direction, and an inscribed roller that rotates in the same direction at the same circumferential speed so as to be inscribed in the ring roller. to form a fiber nip section, and side rings are provided on both sides of this nip section and rotate in the same direction at the same peripheral speed as the above two rollers to regulate the fibers in the nip section from both sides. In the fiber crimping device, the ring surfaces of the side rings on both sides and the side surfaces of the rollers opposite thereto are formed into tapered surfaces inclined in the same direction, and either the ring roller or the inscribed roller is , provides a fiber crimping device characterized in that the other roller is freely provided with a slide along the axial direction with a length corresponding to the inclination of the tapered surface.

[0007]

[Operation] According to the present invention configured as described above, the ring surface of the side ring having a larger diameter than the internal roller and the side surface of the roller opposing the ring surface are overlapped when viewed from the axial direction of the roller. At the beginning of the position, the two surfaces are sufficiently spaced apart, and form a contact shape in which they approach each other closer to the nip point, make contact at the nip point, and then separate again.

[0008] Furthermore, if a gap is likely to be formed between the ring surface and the side surface of the roller due to the thickness of the fiber bundle being held at the nip point where the two rollers come closest, the ring surface A roller provided to be slidable in the axial direction in response to the inclination moves forward to absorb the gap, thereby maintaining regulation of both sides of the fiber bundle at the nip point. Therefore, it is possible to avoid the above-mentioned contact between the two surfaces that occurs during operation, and the nip section can be sufficiently regulated, and the above-mentioned drawbacks of the prior art can be eliminated.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described in detail below with reference to the drawings. In the figure, reference numeral 1 denotes a relatively large-diameter ring roller that rotates in one direction and has a hub 3 fixed to the tip of a rotating shaft 2 that is supported in a cantilever manner by a machine base (not shown). 4 is a roller surface formed by the cylindrical inner peripheral surface. Reference numeral 5 denotes an inscribed roller provided at the tip of another rotating shaft 6 so as to be fitted from the open side surface of the ring roller 1 and inscribed with the roller surface 4.

Reference numeral 7 denotes a bearing that supports the rotary shaft 6 of the internal roller so as to be able to slide slightly in the axial direction. The rotating shaft 6 is supported within a sleeve bearing 12 whose slide is guided by a key 11 and a key 11. 13
is a pulley for driving the internal roller.

Side surfaces a and b continuous to both sides of the roller surface 4 of the ring roller 1 and ring surfaces c and d continuous to both sides of the roller surface 14 of the internal roller 5 are as shown in FIG. The roller surfaces 4 and 14 of the ring roller 1 and the inscribed roller 5 are inclined toward the right in the figure at a downward slope of about 45 degrees, and are formed in tapered surfaces facing each other, as shown in FIG. The surfaces a, b, c, and d are arranged so that they coincide on a line on the vertex 0 (zero) where the fibers are closest to each other, and the nip point of the fiber to be crimped is centered on this vertex 0. form in places.

In the case of this embodiment, the ring surface c of the internal roller 5 and the side surface a of the ring roller 1 constitute the ring surface of the outer side ring and the side surface of the roller opposite thereto. In this case, the side surface b of the ring roller 1 and the ring surface d of the internal roller 5 constitute the ring surface of the other side ring and the side surface on the roller side, and close the nip point formed at the apex 0 on both sides.

During the operation in which the fiber bundle passes through the nip point, the bearing, which is provided so as to be elastically displaceable in the vertical direction, depending on the thickness of the fiber bundle sandwiched between the two rollers 1 and 5. 7 descends to form a compression gap, while the ring surfaces c and d of the side ring and the side surfaces a and b of the roller, which are about to be separated by the formation of this compression gap, rotate while being constantly urged by the coil spring 9. The axial movement of the rotating shaft 6 and the internal roller 5, that is, sliding along the inclination direction, prevents the contact surfaces from separating from each other.

Therefore, according to the present device, the ring surface of the side ring is prevented from contacting the side surface of the roller until the angular position approaches the nip point, and both surfaces that have passed the nip point are also quickly avoided to a non-contact position. This prevents contact from occurring before and after the nip point.

[0015]

According to the present invention configured as described above and operated as described above, the contact between the ring surface of the side ring and the side surfaces of the two rollers forming the nip point is controlled at the nip point. Compared to conventional devices equipped with vertical side rings, the occurrence of scratches due to contact between the two surfaces can be minimized, and the normal operation of the crimping device can be maintained for a long time. There is an effect.

[0016]

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing essential parts of an embodiment of the present invention.

FIG. 2 is a partially cutaway side view showing a state of engagement between a ring roller and an internal roller.

FIG. 3 is a partially cutaway front view showing the state of contact between the side surface of the ring roller and the ring surface of the side ring of the internal roller in a conventional device.

FIG. 4 is a partially cutaway side view showing the state of contact between the side surface of the ring roller and the ring surface of the side ring of the internal roller in a conventional device.

[0017]

[Explanation of symbols]

1 Ring roller 2 Rotation axis 3 Hub 4 Roller surface 5 Internal roller 6 Rotation axis 7 Bearing 8 Adjustment screw 9 Coil spring 10 Keyway 11 key 12 Sleeve bearing 13 Pulley 14 Roller surface a　Ring roller side b Ring roller side c Side ring surface of internal roller d Side ring surface of internal roller 0 Vertex

Claims (1)

[Claims] Claim 1: A fiber nip section is formed by a relatively large-diameter ring roller that rotates on one side and an inscribed roller that is inscribed in the ring roller and rotates in the same direction at the same circumferential speed. , a fiber crimping device equipped with side rings located on both sides of the nip section and rotating in the same direction at the same circumferential speed as the two rollers to regulate the fibers in the nip section from both sides; The ring surface of the side ring and the side surface of the roller opposing thereto are formed into tapered surfaces that are inclined in the same direction, and one of the ring roller and the inscribed roller has the above-mentioned shape with respect to the other roller. A fiber crimping device characterized by a freely provided slide along the axial direction with a length corresponding to the inclination of the tapered surface.