JP2001179680A - Cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting device easy for maintenance and inspection, capable of suppressing damage of a cutter blade and providing chopped strands of same shapes. SOLUTION: This cutting device is provided with a cutter holder 1 provided with a plurality of cutter blades 12 on one side of an object arrangement space 5 in a standby attitude, and on another side, a cutter guide 2 provided with a plurality of slits 21 wherein the cutter blades 12 can be fitted. The cutter blades 12 are mutually moved to a position of a cutting attitude inside the slits 21 for cutting a cutting target 3. The device is provided with the cutter holder 1 with the plurality of the cutter blades 12 each fixed in parallel via moving passages 13 of cut pieces 31, the cutter guide 2 provided with the slits 21 and extrusion members 22 capable of being fitted into the moving passages 13 of the cut pieces 31, and a recovery space 14 of the cut pieces 31 in the rear of the cutter blades 12 and a mutual moving direction tip side of the extrusion members 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a cutting device,
In particular, it relates to a cutting device having a plurality of cutter blades.

[0002]

2. Description of the Related Art Conventionally, as a cutting device for cutting a fiber bundle (for example, a fiber bundle in which long fiber filaments are converged with a sizing agent), a cutter roller and a press roller having a large number of cutter blades protruding from the surface thereof are known. Are known. In this type of cutting apparatus, the fiber bundle is pressed and cut by pressing the holding roller while rotating the cutter roller around which the fiber bundle is wound at a high speed. Then, since the chopped strands thus generated fall down, a collecting section (for example, a conveyor) is provided below the above-mentioned rollers to collect the chopped strands. There is also known a fiber bundle cutting device in which the cutter roller and the pressing roller are provided to face each other, and a fiber bundle can be inserted between these rollers. In this type of fiber bundle cutting device, the cutter roller and the pressing roller are rotated at a high speed while being pressed against each other, and the fiber bundle is continuously supplied between these rollers, so that the fiber bundle is Press and cut. Since the chopped strands thus generated also fall downward, a recovery section is provided below the rollers to recover the chopped strands.

[0003]

However, when the two types of cutting devices described above are used, the fiber bundle is cut by being scraped off by the high-speed rotating cutter roller. However, there is a problem that it takes time to collect and transport the chopped strands because each bundle is scattered in the collection section. Further, the surface of the fiber was fuzzy, and chopped strands (miscuts) whose length and shape did not meet the standards were likely to occur. Therefore, when the conventional cutting device is used, there is a problem that the production efficiency is low because the yield is low. Further, the chopped strands are clogged between the cutter blades and are liable to be clogged, so that there is a problem in that maintenance and inspection are troublesome. Furthermore, when cutting the fiber bundle, the cutter blade is pressed against the pressing roller while rotating at a high speed, so that the cutter blade is liable to cause fatigue failure. Therefore, there is a problem that the life of the cutter blade is short.

Accordingly, it is an object of the present invention to provide a cutting apparatus capable of cutting a fiber bundle and supplying a chopped strand having a uniform shape in view of the above-mentioned drawbacks. It is another object of the present invention to provide a cutting device which can be easily maintained and inspected, and can extend the life of the cutter blade by suppressing damage to the cutter blade.

[0005]

According to a first aspect of the present invention, there is provided a fiber bundle cutting apparatus according to the present invention, wherein an object to be cut is disposed in a standby position. The standby position, comprising a cutter holder having a plurality of cutter blades on one side of an object placement space to be provided, and a cutter guide having a plurality of slits into which the cutter blades can be fitted on the other side. A cutting device that cuts the object to be cut by moving one of the cutter holder and the cutter guide relative to the other to a cutting posture in which the cutter blade is positioned in the slit; Cutter blades, the cutter holder of which is fixed in parallel via a cutting piece moving path, and an extruding member capable of being fitted into the slit and the cutting piece moving path. Has the cutter guides provided alternately, and in the relative movement from the standby posture to the cutting posture, the cutter blade is inserted into the slit, and the pushing member is inserted into the cut piece moving path. In the cutting posture, a cut piece collection space through which the cut piece of the object to be cut is extruded by the pushing member is provided behind the cutter blade and on the distal end side in the relative movement direction of the pushing member. In the above-mentioned feature configuration, as described in claim 2, it is preferable that a drive unit that translates at least one of the cutter holder and the cutter guide in parallel with the other is provided. As described in Item 3, the object to be cut is preferably a fiber bundle in which a plurality of fibers are bundled. The operation and effect are as follows.

In the cutting apparatus according to the first aspect, when the cutter blade moves relative to the cutting posture from the standby posture, the cutter blade removes the cutting target disposed in the target mounting space. After being cut in parallel in the horizontal direction at the arrangement interval of the cutter blade, it is configured to fit into the slit, and at the same time, the pushing member provided in the cutter guide is fitted into the cut piece moving path. Because it is configured, the cutter blade,
Instead of pressing and cutting to scrape the object as in a conventional cutting device, the object to be cut is sheared from one direction. Therefore, the cut surface is less likely to fluff and a cut piece having a uniform cut length can be obtained. Further, the cutter blade is a pressure roller,
Since there is no contact with an object other than the object to be cut, damage to the cutter blade can be minimized. Therefore, the replacement life of the cutter blade can be extended. Furthermore, since the pushing member slides the cut piece along the upper surface of the cutter blade from the rear in the moving direction while keeping the lump as a lump, without clogging between the cutter blades, It is possible to extrude and collect the cut piece mass into the cut piece collection space without decomposing the mass. Since the cutting device according to the present invention has such a simple configuration, maintenance and inspection are easy.

Further, if a drive unit is provided for moving one or both of the cutter holder and the cutter guide in parallel with respect to the other, the cutter blade can be accurately fitted into the slit. Therefore, the cutting object can be cut smoothly. Similarly, the pushing member can be accurately fitted into the cut piece moving path and moved in the direction of the object placement space. By doing so, the cut pieces of the cutting object can be smoothly moved to the object placement space while keeping the lump, so that the cut pieces are less likely to be disassembled and scattered, and collection is facilitated. It will be easier.

Further, the above-mentioned cutting device exhibits the above-mentioned effects remarkably when a fiber bundle in which a plurality of fibers are bundled is used as an object to be cut, and can cut the fiber bundle smoothly. As a result, miscuts are less likely to occur, and chopped strands are less likely to fluff. Also,
Since the pushing member fitted into the cut piece moving path pushes the chopped strand and can smoothly move to the object placement space, the chopped strand is less likely to be disassembled or scattered. And recovery becomes easy.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings, taking as an example a case where an object to be cut is a fiber bundle in which a plurality of fibers are bundled. As shown in FIGS. 1 and 4, the cutting device according to the present invention has a cutter holder 1 having a plurality of cutter blades 12 in a main body 11 and a number of cutter blades 12 having a shape in which the cutter blades 12 can be fitted. A cutter guide 2 having a corresponding number of slits 21, wherein one of the cutter blades 12 can be inserted into or detached from the slit 21 by moving one relative to the other. In addition, the cutter blade 12 is connected to the slit 2.
In a standby state in which the cutter holder 1 and the cutter guide 2 are separated from each other without being fitted into the cutter holder 1, an object arrangement space 5 in which the object 3 is arranged between the cutter holder 1 and the cutter guide 2. Is formed. The depth of the slit 21 is longer than the width of the cutter blade 12 so that the cutter blade 12 can be fitted over the entire width. The plurality of cutter blades 12 are fixed to the cutter holder 1 in parallel via cut piece moving paths 13 at intervals corresponding to the length of the cut pieces 31 obtained by cutting the cutting target. Have been. The cutter guide 2 is provided with the slit 2
1 and pushing members 22 having a shape that can be fitted into the cut piece moving path 13 are provided alternately so as to correspond to the positions of the respective cut pieces 31.

[0010] As shown in FIGS.
When cutting the cutting object 3, at least one of the cutter holder 1 and the cutter guide 2 moves relatively to the other, and the cutter blade 12 is positioned in the slit 21 (cutting position). Posture). At the time of this movement, a driving unit 4 (for example, a pneumatic cylinder) provided in the cutting device
Moves at least one of the cutter holder 1 and the cutter guide 2 in parallel to the other. In the relative movement from the standby posture to the cutting posture, the driving unit 4 pushes the cutter holder 1 and the cutter guide 2 simultaneously with each of the cutter blades 12 being fitted into the slits 21. Member 2
2 are moved so as to fit into the cut piece moving path 13. In this way, the cutter blade 12
While moving toward the slit 21,
The cutting object 3 supported by the cutting object 2 can be cut into a predetermined length (see FIG. 2). Further, here, the cut pieces 31 of the cutting object 3 are Since it is pressed into the object placement space 5, it cannot enter the slit 21 and clogging hardly occurs. At the same time, by moving the cutter holder 1 or the cutter guide 2 or both, the cut pieces 31 of the object 3 are pushed toward the distal end in the relative movement direction of the pushing member 22 and remain as a lump. Without being disassembled in the above, it moves to the rear of the cutter blade 12 through the cut piece moving path 13 and is carried to the cut piece collection space 14. Then, the cut piece 31
Are collected and conveyed on a conveyor (not shown) as a collecting section provided below the cutter holder 1 and the cutter guide 2.

Here, since the cutter blade 12 does not come into contact with anything other than the object 3 to be cut,
Wear and breakage are less likely to occur, and the service life is longer than when mounted on a conventional cutting device.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A cutter holder 1 in which 80 blades 12 each having a thickness of 0.45 mm and a depth of 18 mm are stacked in the thickness direction at intervals of 3 mm,
2 and a cutter guide 2 provided with slits 1 having a width of 1 mm and a depth of 30 mm at intervals of 3 mm, and further provided with a pneumatic cylinder as a driving device 4 for driving the cutter guide 2. A cutting test of the cutting device was performed using a fiber bundle as the cutting target 3. The cutting object 3 is wound around a winder,
It is cut in a direction perpendicular to the winding direction to form a bundle of long fiber filaments, which is suspended by an arm 6 and inserted into the object placement space 5 as shown in FIGS. Configured. The cut pieces 31 were collected on a conveyor (not shown) as a collecting unit provided below the cutter holder 1 and the cutter guide 2.

The fiber bundle subjected to the cutting test has a fiber diameter of 12 μm.
An undried strand composed of m pitch fibers, a melted coal-based pitch was drawn out from a 1200 hole nozzle to form a long fiber filament, which was wound around a winder while applying a sizing agent. The number of filaments in the strand was 20,000 and 40000.

As a result of supplying the fiber bundle to the fiber bundle cutting device and cutting the fiber bundle, no clogging of the cutter blade 12 occurs for any fiber bundle of any number of filaments, and there is no cut error. Chopped strands of uniform length could be manufactured. At this time, it took 16 seconds to collect the fiber bundle (230 g) of one winder into the collection unit.

Comparative Example As a comparative example, a cutter roller having 82 cutter blades attached at intervals of 3 mm and a pressing roller (diameter: 300 mm) having a surface coated with a urethane sheet were arranged opposite to each other. In the meantime, a cutting experiment was performed using a fiber bundle cutting device configured to insert a fiber bundle. While the cutter roller and the press roller are being pressed against each other and rotating at a high speed (a peripheral speed of 376 m / min), the same kind of pitch fiber strand as that used in the embodiment is continuously supplied between these rollers. And pressed so as to scrape the pitch fiber strand to obtain a chopped strand. At this time, the fiber bundle (230 g) of one winder is collected on the conveyor (collection unit).
It took 33 seconds. A cut error (length 3 mm to 6 mm) for the entire chopped strand thus obtained
Of the chopped strand reached 17.5%, and the cutter blade 12 was also clogged. Many chopped strands were fluffy.

[Other Embodiment] Another embodiment will be described below. The drive method of the drive unit is not limited to a method using air pressure, and may be driven by hydraulic pressure, electric power, or the like. When cutting a strand having a large number of filaments, the cutter blade 12 and the cutter guide 2 are set at an appropriate angle to the fiber bundle, for example, 10 ° to 30 °.
May be installed at an angle of. With this configuration, the pressure applied to the cutter blade 12 can be reduced to reduce the load. In the above embodiment, the driving device 4 is provided on the cutter holder 1 side, but may be provided on the cutter guide 2 side, or may be provided on both the cutter holder 1 and the cutter guide 2. good.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a change in posture of a cutting device according to the present invention.

FIG. 2 is a cross-sectional view showing a posture change of the cutting device according to the present invention.

FIG. 3 is a cross-sectional view showing a posture change of the cutting device according to the present invention.

FIG. 4 is a perspective view showing a cutting device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cutter holder 2 Cutter guide 3 Cutting object 4 Driving device 5 Object installation space 12 Cutter blade 13 Cutting piece movement path 14 Cutting piece collection space 21 Slit 22 Extruding member 31 Cutting piece

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Mitsuru Iwamoto 4-1-2 Hirano-cho, Chuo-ku, Osaka-shi, Osaka Inside Osaka Gas Co., Ltd. (72) Inventor Tatsuya Ito 4-chome, Hirano-cho, Chuo-ku, Osaka, Osaka 1-2-2 Inside Osaka Gas Co., Ltd. (72) Inventor Naoki Yamaguchi 4-1-2, Hirano-cho, Chuo-ku, Osaka-shi, Osaka F-term in Osaka Gas Co., Ltd. 3C021 GA04 GA05 3C027 HH03 HH04 HH09 HH12 HH14

Claims (3)

[Claims] In a standby posture, a cutter holder provided with a plurality of cutter blades on one side of an object placement space in which a cutting object is placed, and a plurality of cutter holders capable of fitting the cutter blades on the other side. A cutter guide having a slit, wherein the cutter blade and the cutter guide are relatively moved from the standby position to a cutting position in which the cutter blade is located in the slit with respect to the other. ,
A cutting device for cutting the object to be cut, wherein the plurality of cutter blades can be fitted into the cutter holder fixed in parallel via a cutting piece moving path, the slit, and the cutting piece moving path. The extrusion member is
Comprising the cutter guides provided alternately, in relative movement from the standby posture to the cutting posture,
The cutter blade fits into the slit, and the pushing member fits into the cut piece moving path, respectively, at the tip of the relative moving direction of the pushing member behind the cutter blade, in the cutting posture, the cutting object. A cutting device including a cut piece collection space in which cut pieces are extruded by the pushing member. 2. The cutting device according to claim 1, further comprising a driving unit that moves at least one of the cutter holder and the cutter guide in parallel with respect to the other. 3. The cutting apparatus according to claim 1, wherein the object to be cut is a fiber bundle in which a plurality of fibers are bundled.