JPH08174474A - Fiber cutting device - Google Patents

Abstract

PURPOSE: To enable a cutting device to be operated continuously by facilitating elimination of cut fiber causing clogging between blades implanted in the case of obtaining short cut fibers from a long fiber by winding the long fiber around a rotary body in which blades are radially implanted on its circumferential face and under the conditions a press roller is pressed against the fiber. CONSTITUTION: A rotary body in which blades 1 are implanted in its circumferential face is fitted between a pair of large dia. rotary bodies 3a, 3b enabling the rotary body 2 to be moved in the axial direction freely and being rotated integrally with the rotary body 2. A press roller 18 is interposed in a fiber supplying gap between the bodies 3a, 3b. A scraper 17 for eliminating clogging of cut fibers between the blades 1 while moving in the gap positioned between the blades 1 is installed in the large dia. rotary body 17. Clogging of cut fibers generating in blades is eliminated in this way.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber cutting device,
It is characterized in that the cut fibers are removed from between the blades on the peripheral surface of the rotating body in which the blades are radially implanted.

[0002]

2. Description of the Related Art A plurality of blades whose blade edges are parallel to an axis are embedded in a circumferential surface of a rotating body at appropriate intervals, and the blades are cut into rotating bodies in which they are radially implanted. For example, U.S. Pat. No. 3,915,042 is an apparatus in which a press roller is pressed from the outside of the wound fiber while the desired fiber is wound to obtain a cut fiber having a desired length.

[0003]

SUMMARY OF THE INVENTION The conventional cutting device described above has a hollow cylindrical shape by fixing both ends of an elongated strip-shaped blade at a circumferential interval between two opposing discs. The rotating body was constituted, and the fibers cut into the blade by the press roller pressed from the outside were extruded into the rotating body through the gap between the blade and the blade.

This conventional device has the advantage of being simple in structure, but has the drawback of easily being clogged due to the accumulation of cutting fibers pushed between the blades, especially when the fibers are shortened. There was a technical problem that it was easily clogged. Therefore, it is a problem to be solved in this kind of fiber cutting device to surely remove the cut fibers from the rotating body and not to cause clogging even when the distance between the blades is narrow. .

[0005]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a long fiber to be cut is wound around a rotating body in which a large number of blades are radially arranged at intervals in the circumferential direction of the peripheral surface, and a press roller is applied from the outside. In the fiber cutting device in which the wound fiber is pressed to cut the wound fiber at a blade arrangement interval, the rotating body rotates integrally with the rotating body and has a common axis line, and The rotary body is accommodated in a pair of left and right large-diameter rotary bodies that have a space for accommodating the rotary body on their side surfaces, and that bears the rotary body so that the rotary body can move in the axial direction freely. On the inner surface, a pair of left and right annular guide disks that guide the fibers toward the blade, and extending from the outside of the guide disk into the accommodation space, the tip is provided along the peripheral surface of the rotating body. Engage within the spacing of each blade A toothed-gear scraper is attached, and the long fibers supplied from between the pair of left and right guide disks are wound around the rotating body that rotates integrally with the large-diameter rotating body, and are also interposed between the guide disks. With the press roller, the fibers are pressed against the blades from the outside to be cut, and the cut fibers accumulated in a clogged state between the blades are scraped out by the scraper that intervenes between the blades when the rotor is moved. The present invention provides a fiber cutting device configured as described above.

In the present invention, the shaft portion of the rotating body is rotatably supported by a linear bearing fitted in the shaft hole of the large-diameter rotating body so that the rotating body can move freely in the axial direction. One shaft part is penetrated through the linear bearing, and a rotary transmission means for integrally rotating the large diameter rotary body through a key or spline shaft coupling at the shaft end part, and only the rotary body through the shaft coupling. By providing the reciprocating means for reciprocating in the axial direction, the structure of the entire apparatus can be made compact.

[0007]

In the device of the present invention, cutting fibers are accumulated between the blades on the circumference of the rotating body in which the blades are planted. When the rotor is moved in the axial direction, the scraper intervening in the gap between the blades scrapes it laterally, so that the clogging of the conventional device can be forcibly released.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the device of the present invention has a rotating body 2 in which a blade 1 is planted on a peripheral surface thereof, and a pair of left and right large-diameter rotating bodies 3a which are fitted together from the left and right to integrally rotate coaxially. 3b and.

The rotating body 2 is rotationally driven by a rotating shaft 4 penetrating its axis. The blade 1 is radially planted on the peripheral surface of the rotating body 2 at appropriate intervals in the circumferential direction, with the blade edges aligned with the axis and the base portion being embedded in the cylindrical rotating body 2. There is.

A shaft portion 5 protruding left and right from the side surface of the rotating body 2.
The a and 5b are rotatably supported by the shaft holes 6 opening on the side surfaces of the large-diameter rotating bodies 3a and 3b through linear bearings 7, respectively, and support the rotating body 2 so as to be movable in the axial direction.

Further, the shaft portions 5a and 5b are slides which form a movement allowance of the rotating body 2 on the outside of the linear bearing 7 and rotate integrally with the shaft end portions 5a 'and 5b' via the keys 8 respectively. By fitting the guide ring 9 and bearing the guide pins 11 that are also eccentrically projected from the large-diameter rotating bodies 3a and 3b, respectively, to the other linear bearings 10 that are eccentrically provided on the ring 9, The rotation transmission means is provided for transmitting the rotation of the rotary shaft 4 to the large-diameter rotary bodies 3a and 3b, respectively.

Further, the shaft end portion 5b 'of one shaft portion 5b.
Is further extended through the slide guide ring 9,
A rotary drive mechanism (not shown), for example, a crank driven by a motor and connected to a known rotary drive mechanism such as a pulley mounted coaxially so as to be slidable, and also driven by a motor (not shown). The rotating body 2 and the large-diameter rotating bodies 3a and 3b are integrally rotated in one direction by being connected to a reciprocating means such as a link, and at the same time, the rotating shaft 4
At the same time, the rotating body 2 reciprocates along the axial direction.

The pair of left and right large-diameter rotating bodies 3a, 3b are rotatably fitted on the outer sides thereof, and are supported by the frame F which is borne by the radial bearings 12, respectively.

On the inner side surfaces 3a ', 3b' of the large-diameter rotating bodies 3a, 3b facing each other outside the central portion of the rotating body 2,
An accommodation space 13 for accommodating the rotating body 2 and a supply gap 15 for the fiber 14 wound around the rotating body 2 are formed as shown in FIG.

The bases are fixed to the inner side surfaces 3a ', 3b' on both sides of the gap 15 to guide the fibers 14 to the cutting edge of the blade 1 of the rotor 2 while forming the fibers 14 with a certain width. A pair of left and right annular guide discs 16 are attached, and the base portion is fixed to the outer periphery of the guide disc 16 together with the guide discs 16 and extends into the accommodating space 13. Installed, rotating body 2
A scraper 17 in the shape of an internal gear is attached along the circumferential surface of the blade with its tip engaged within the arrangement interval of the blades 1. (See Fig. 4)

Further, as shown in FIG. 2, a press roller for supplying the space between the guide disks 16 into the gap 15 to wind the fibers 14 around the rotating body 2 toward the blade 1 to cut the fibers. 18 intervenes as shown in FIG.

As shown in FIG. 2, the press roller 18 is rotatably supported by the tip of an arm 20 having a fulcrum shaft 19 on one side of the upper part of the frame F, and a spring 21 for urging the middle of the arm 20 from above. Force intervenes in the supply gap 15 to elastically contact and press against the fibers 14 wrapped around the rotating body 2 and also rotate following the rotation of the rotating body 2.

In FIG. 3, the fibers 14 wound around the rotating body 2 are cut into a predetermined length by pressure contact with a press roller 18, and are laminated on the peripheral surface of the rotating body 2 between the blade 1 and the blade 1. It shows a state of accumulation.

FIG. 4 shows a state of engagement between the blade 1 radially planted on the peripheral surface of the rotating body 2 and the internal gear-shaped scraper 17 that intervenes in the gap between the blades. When the rotating body 2 driven by the reciprocating means moves in the axial direction in accordance with the state of the cut fibers 14 'shown in FIG. 3, the scraper 17 is moved.
Moves relatively along the peripheral surface of the rotating body 2 and pushes the cutting fiber 14 ′ to the outside of the guide disk 16 by its tip.

[0020]

As described above, the rotating body in which the supplied fibers are wound and cut at the blade arrangement intervals by press contact with the press roller is fitted to the rotating body from the left and right, and the axis line of the rotating body is fitted. A pair of left and right large-diameter rotating bodies that freely rotate in one direction and rotate integrally with each other, and supply long fibers to be cut from the supply gap formed between the inner surfaces of the large-diameter rotating bodies. At the same time, while interposing a press roller in the same gap, the scraper attached to the large-diameter rotating body removes the cutting fibers accumulated between the blades on the peripheral surface of the rotating body. Since the blade spacing becomes narrower and the cut fibers become clogged and can be forcibly removed by the scraper, the process from fiber spinning to cutting can be consistently operated at high speed and continuously, which is an excellent effect. What to do It can be.

[Brief description of drawings]

FIG. 1 is a partially cutaway vertical sectional view of an embodiment of the present invention.

FIG. 2 is a side view of the embodiment.

FIG. 3 is a partially cutaway enlarged sectional view illustrating a cut state of fibers.

FIG. 4 is a partially cutaway enlarged cross-sectional view illustrating an engagement state between a blade on a peripheral surface of a rotating body and a scraper.

[Explanation of symbols]

 1 blade 2 rotating body 3a large diameter rotating body 3b large diameter rotating body 3a 'inner end face 3b' inner end face 4 rotating shaft 5a shaft portion 5b shaft portion 5a 'bearing portion 5b' bearing portion 6 shaft hole 7 linear bearing 8 key 9 slide Guide ring 10 Linear bearing 11 Guide pin 12 Radial bearing 13 Storage space 14 Fiber 14 'Cutting fiber 15 Supply gap 16 Guide disk 17 Scraper 18 Press roller 19 Support shaft 20 Arm 21 Spring F frame

Claims (2)

[Claims] 1. A wound fiber in which a long fiber to be cut is wound around a rotating body in which a large number of blades are radially arranged at intervals in the circumferential direction of a circumferential surface, and a press roller is pressed from the outside. In the fiber cutting device configured to cut at a blade arrangement interval, the rotating body has a common axis with the rotating body and integrally rotates, and the accommodation space of the rotating body is provided on the inner surface facing the row. And is housed in a pair of left and right large-diameter rotating bodies that rotatably support the rotating body in the axial direction. A pair of left and right annular guide disks that guide the fibers toward, and extending from the outside of the guide disks into the accommodation space, and the tips along the peripheral surface of the rotating body within the arrangement intervals of the blades. Gear scraper to be engaged with And a long fiber supplied from between the pair of left and right guide disks is wound around the rotating body that rotates integrally with the large-diameter rotating body, and by a press roller that is also interposed between the guide disks, Fiber cutting by pressing the fibers from the outside to the blades, and cutting fibers that accumulate in a clogged form between the blades are scraped by the scraper that intervenes between the blades when the rotor is moved. apparatus. 2. The shaft portion of the rotary body is rotatably supported by a linear bearing fitted in a shaft hole of the large-diameter rotary body,
In addition to being freely movable in the axial direction, one shaft portion of the rotating body has a large diameter rotating body integrated with the rotating body through a key or spline shaft coupling at a shaft end portion penetrating the linear bearing. 2. The fiber cutting device according to claim 1, further comprising: a rotary transmission means for rotating the rotary body and a reciprocating means for reciprocating only the rotary body in the axial direction via the shaft coupling.