JP4444527B2 - Strand cutting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a strand cutting device suitable for producing glass fiber chopped strands and the like.
[0002]
[Prior art]
An outline of a production facility for glass fiber chopped strands will be described with reference to FIG.
[0003]
A number of glass filaments 1 are drawn out from a bushing 10 provided at the bottom of the glass melting tank. After the binder is attached to the filament 1 by the binder coater 12, the filaments 1 are drawn together to form a strand 2. The strand 2 is fed into the rubber roll 18 through the pull roll 14 and the rotating wheel 16. A presser roll 20 and a cutter roll 22 are provided so as to rotate in contact with the outer peripheral surface of the rubber roll 18. The strand 2 moves so as to overlap the outer peripheral surface of the rotating rubber roll 18, passes between the rubber roll 18 and the presser roll 20, and is then introduced between the rubber roll 18 and the cutter roll 22. Cut into lengths (chopped) to form chopped strands 3. A plurality of blades (cutters) 22 a are provided on the outer peripheral surface of the cutter roll 22 so as to extend in a direction parallel to the axial center line of the cutter roll 22.
[0004]
Although the presser roll 20 is used in FIG. 4, the presser roll 20 may be omitted.
[0005]
[Problems to be solved by the invention]
In starting the production of the chopped strand by such a chopped strand production apparatus, the strand 2 is hung on the outer peripheral surface of the rubber roll 18, and the front end side of the strand 2 is placed between the rubber roll 18 and the press roll 20 ( Or, it is fed between the rubber roll 18 and the cutter roll 22).
[0006]
The feeding of the strand 2 on the tip side is performed manually, but this operation is difficult and requires skill.
[0007]
An object of the present invention is to provide a strand cutting device in which a strand is smoothly wound around an outer peripheral surface of a rubber roll, and a rise at the time of manufacturing a chopped strand or the like is performed quickly.
[0008]
[Means for Solving the Problems]
Strand cutting device of the present invention, the strand cutting apparatus comprising: a rubber roll rubber ring is fixed to the outer periphery of the wheel, is the blade provided on the outer periphery of the cutter roll rotating in contact with the rubber roll, a side of the wheel The strand winding body is integrally provided , and the strand wound around the strand winding body is hooked at the crossing corner edge of the outer peripheral surface of the rubber ring and the side surface of the rubber ring. strand engaging portion made of notch for is characterized in that it vignetting set.
[0009]
When the production of chopped strands is started by such a strand cutting device, the strand is wound around the strand hooking portion so that the strand is wound around the strand winding body, and the rotation of the rubber roll is started. Along with the start of rotation of the rubber roll, the strand is wound around the outer peripheral surface of the rubber roll so as to be pulled by the strand hooking portion, and production of the chopped strand is started.
[0010]
When starting the production of this chopped strand, it is not necessary for the operator to send the tip side of the strand between the rubber roll and the presser roll or the cutter roll, and even an unskilled worker can start the production of the chopped strand smoothly. it can.
[0011]
The strand is usually wound around the strand winding body by about 0.5 to 3 turns. When the strands are wound so as to intersect on the strand winding body and firmly fixed thereto, the operator must take their hands off the ends of the strands even before the strands are cut smoothly. Can do. In this case, when the strand starts to be cut smoothly, the number of rotations of the rubber roll is increased, so that the tip end portion of the strand naturally falls off from the strand winding body due to the centrifugal force. It is preferable that the strand winding body is tapered so that the natural fall occurs surely. Moreover, when not fixing a strand on a strand winding body, it is necessary for an operator to match hand movement with rotation of a rubber roll, holding the front-end | tip part of a strand. In this case, when the strand starts to be cut, the tip portion thereof remains in the operator's hand, so that the removing operation is extremely easy.
[0012]
In one aspect of the present invention, a strand hooking portion including a protrusion for hooking a strand wound around the strand winding body is provided on a side surface of the rubber ring.
[0013]
In another aspect of the present invention, in a strand cutting device having a rubber roll in which a rubber ring is fixed to the outer periphery of the wheel and a cutter roll in which a blade provided on the outer periphery rotates in contact with the rubber roll, On the side surface, a strand wound body having an annular portion and a flange portion that expands from the annular portion is integrally provided coaxially with the rubber roll, and an angular edge portion on the outer periphery of the flange portion, A radial surface parallel to the side surface of the wheel and an axial surface parallel to the axial center line of the rubber roll extend from the outermost periphery of the radial surface, and the axial surface of the flange portion and the flange A strand hooking portion including a notch for hooking a strand wound around the strand winding body is provided at the crossing corner edge portion of the portion with the radial surface.
[0014]
In order to reliably guide the strand to the outer peripheral surface of the rubber roll, it is preferable to provide a strand guide.
[0015]
The apparatus of the present invention is suitable for cutting glass fiber strands, but can also be used for cutting other strands.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a perspective view showing a strand cutting device according to an embodiment, and FIG. 2 is an explanatory view of a step of winding a strand around the strand cutting device.
[0017]
Also in this embodiment, the presser roll 20 and the cutter roll 22 are disposed so as to rotate in contact with the outer peripheral surface of the rubber roll 18A, and the cutter roll 22 includes a plurality of blades 22a. The strand 2 passes between the rubber roll 18A and the presser roll 20, and is then sent between the rubber roll 18A and the cutter roll 22 to be cut into a chopped strand.
[0018]
The rubber roll 18 </ b> A according to this embodiment includes a wheel 26 fixed to the rotating shaft 24 and a rubber ring 28 fixed to the outer periphery of the wheel 26. A strand hooking portion 30 made of a notch is provided at the crossing edge of the outer peripheral surface of the rubber ring 28 and one side surface.
[0019]
In FIGS. 1 and 2, four strand hooks 30 are provided, but one or more may be used. However, in order to improve the strand winding workability, it is preferable to provide two or more strands. The cutout portion constituting the strand hooking portion 30 is provided so as to penetrate the rubber ring 28 in the radial direction so as to reach the middle part between the outer periphery and the inner periphery from the outer periphery of the rubber ring. It may be provided.
[0020]
On the side surface of the wheel 26 of the rubber roll 18 </ b> A, a strand winding body 32 having a substantially cylindrical shape, a substantially disk shape, or a substantially cylindrical shape is provided so as to be coaxial with the wheel 26. The strand wound body 32 may be formed integrally with the wheel 26 or may be attached to the wheel 26. The outer circumferential surface of the strand wound body 32 is a tapered surface that becomes smaller in diameter as it is separated from the wheel 26.
[0021]
In order to reliably introduce the strand 2 to the outer peripheral surface of the rubber roll 18A, a yarn path 34 as a guide member for the strand 2 is provided. In this embodiment, the yarn path is formed by bending a rod-shaped material into a substantially arc shape or U shape, and is disposed along the outer periphery of the rotating wheel 16. However, a guide member other than the yarn path 34 may be used, and the guide member may be disposed closer to the rubber roll 18A.
[0022]
In order to wrap the strand 2 around the rubber roll 18A, as shown in FIG. 2 (a), the strand 2 is passed through the yarn path 34 from the outer peripheral surface of the rotating wheel 16 and is hooked on one strand hooking portion 30 of the rubber roll 18A. Then, it is wound around the strand winding body 32. Next, as shown in FIGS. 2B and 2C, the rubber roll 18A starts to rotate in the clockwise direction in the figure. If it does so, the strand 2 will be hooked and pulled out by the strand latching | locking part 30, and will come to overlap with the outer peripheral surface of the rubber roll 18A, and will wind. And when the strand latching | locking part 30 with which the strand 2 was hooked passed the cutter roll 22, the cutting | disconnection (chopping) of the strand 2 will be started.
[0023]
As described above, according to this embodiment, when the strand 2 is wound around the rubber roll 18A, the operator does not need to insert the tip side of the strand 2 between the rubber roll 18A and the presser roll 20, and the work efficiency can be improved. Is very good. In addition, since the outer peripheral surface of the strand wound body 32 is tapered, the uncut strand can be removed from the strand wound body very easily.
[0024]
FIG. 3 (a) is a perspective view of a strand winding body used in a strand cutting device according to another embodiment of the present invention, and FIG. 3 (b) is a BB line in FIG. 3 (a). It is sectional drawing which follows.
[0025]
The strand wound body 40 is coaxially attached to the side surface of the rubber roll 18. The strand wound body 40 includes an annular portion 42 at the center, a flange portion 44 that expands radially from the annular portion 42, and a notch provided at the outer peripheral edge of the flange portion 44. And a strand hooking portion 46.
[0026]
Although the annular part 42 is a short cylindrical shape in this embodiment, the outer peripheral surface may be tapered like the strand wound body 32 of the above-described embodiment.
[0027]
The flange portion 44 has a Jinkasa shape that is inclined so as to approach the rubber roll 18 toward the outer periphery. Near the outer periphery of the flange portion 44 is a radial surface 44a parallel to the side surface of the rubber roll 18, and an axial surface 44b parallel to the axial center line of the rubber roll 18 extends from the outermost periphery of the radial surface 44a. is doing. The strand hooking portion 46 is provided in a shape in which a crossing corner portion between the radial surface 44a and the axial surface 44b is notched. In this embodiment, two strand locking portions 46 are provided opposite to each other in the diameter direction of the strand wound body 40, but may be one or three or more.
[0028]
The structure of the rubber roll 18 to which the strand winding body 40 is attached is as shown in FIG. Although not shown, a presser roll 20 and a cutter roll 22 are arranged in contact with the rubber roll 18 as shown in FIG.
[0029]
In order to wind the strand 2 (not shown in FIG. 3) around the rubber roll 18 provided with the strand winding body 40, the strand from the yarn path is applied to the outer peripheral surface of the rubber roll 18, and then the strand is hooked to the strand. After being hung on the portion 46, it is wound around the annular portion 42, and then the rubber roll 18 is rotated. The strand winding body 40 rotates integrally with the rubber roll 18, and the strand 2 is pulled by the strand hooking portion 46 and is drawn out while overlapping the outer peripheral surface of the rubber roll 18. Eventually, this strand is caught between the rubber roll 18 and the cutter roll 22, and the production of the chopped strand starts.
[0030]
Even in this embodiment, the work efficiency of winding the strand around the rubber roll is very good.
[0031]
In the above embodiment, instead of the strand engaging section 30 or strand hooking portion 46 may be provided with a "projection" for hooking the strands on the radial surface 44a of the side surface or the flange portion of the rubber ring 28 . Even when the protrusions are provided as described above, substantially the same effect can be obtained by substantially the same work procedure as that of the above embodiment.
[0032]
【The invention's effect】
As described above, according to the present invention, the working efficiency of winding the strand around the rubber roll is very good, and the start-up of the production of the chopped strand becomes rapid. Also, the safety of work is very good.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a strand cutting device according to an embodiment.
FIG. 2 is an explanatory diagram of a process of winding a strand around a strand cutting device.
FIG. 3A is a perspective view of a strand wound body used in a strand cutting device according to another embodiment of the present invention, and FIG. 3B is a cross-sectional view taken along line BB in FIG. .
FIG. 4 is a schematic view of a chopped strand production facility.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Filament 2 Strand 3 Chopped strand 10 Bushing 18 and 18A Rubber roll 20 Pressing roll 22 Cutter roll 30 Strand latching part 32 and 40 Strand wound body 46 Strand latching part

Claims (7)

In a strand cutting device having a rubber roll in which a rubber ring is fixed to the outer periphery of the wheel, and a cutter roll in which a blade provided on the outer periphery rotates in contact with the rubber roll,
A strand winding body is integrally provided on the side surface of the wheel ,
Wherein the cross angle edge of the outer peripheral surface and the side surface of the rubber ring of the rubber ring, the strand engaging portion made of notch for hooking the strands wound around the said strand wrapping body is eclipsed set A strand cutting device. In a strand cutting device having a rubber roll in which a rubber ring is fixed to the outer periphery of the wheel, and a cutter roll in which a blade provided on the outer periphery rotates in contact with the rubber roll,
A strand winding body is integrally provided on the side surface of the wheel,
A strand cutting device characterized in that a strand hooking portion comprising a protrusion for hooking a strand wound around the strand winding body is provided on a side surface of the rubber ring. The strand cutting device according to claim 1 or 2, wherein the strand winding body is formed of a tapered member disposed on the side surface of the wheel coaxially with the rubber roll. In a strand cutting device having a rubber roll in which a rubber ring is fixed to the outer periphery of the wheel, and a cutter roll in which a blade provided on the outer periphery rotates in contact with the rubber roll,
On the side surface of the wheel, a strand wound body having an annular portion and a flange portion that expands from the annular portion is integrally provided coaxially with the rubber roll, and
An angular edge portion on the outer periphery of the flange portion is formed such that a radial surface parallel to the side surface of the wheel and an axial surface parallel to the axial center line of the rubber roll extend from the outermost periphery of the radial surface. In addition, at the crossing corner edge between the axial surface of the flange portion and the radial surface of the flange portion, there is provided a strand hooking portion comprising a notch portion for hooking a strand wound around the strand winding body. A strand cutting device. In a strand cutting device having a rubber roll in which a rubber ring is fixed to the outer periphery of the wheel, and a cutter roll in which a blade provided on the outer periphery rotates in contact with the rubber roll,
On the side surface of the wheel, a strand wound body having an annular portion and a flange portion that expands from the annular portion is integrally provided coaxially with the rubber roll, and
An angular edge portion on the outer periphery of the flange portion is formed such that a radial surface parallel to the side surface of the wheel and an axial surface parallel to the axial center line of the rubber roll extend from the outermost periphery of the radial surface. The strand cutting device is characterized in that a strand hooking portion made of a projection for hooking a strand wound around the strand winding body is provided on a radial surface of the flange portion. 6. The strand cutting device according to claim 4, wherein an outer peripheral surface of an annular portion of the strand winding body is formed of a tapered member. The strand cutting device according to any one of claims 1 to 6, further comprising a guide for guiding the strand to the outer peripheral surface of the rubber roll.

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