JPS5932415B2 - Glass fiber cutting equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to a glass fiber cutting device.

Glass fibers are produced by drawing a large number of molten glass flows flowing out of a bushing into glass fibers, adding a sizing agent to these glass fibers to form a glass fiber bundle, and winding this onto a mandrel rotating at high speed. Manufactured.

Alternatively, it can be produced by bringing a glass fiber bundle into contact with the surface of a rotating cylinder, pulling it, and shaking it in a non-directional manner.

Glass fibers produced as described above may be made into products as they are, but they are often made into final products after undergoing secondary processing steps such as drawing, aligning, and twisting.

A large amount of waste is generated in the glass fiber manufacturing process and secondary processing process.

There are many types of glass fibers.

For example, the diameter (thickness) of glass fibers, the number of bundled glass fibers,
The type of sizing agent differs depending on its quality.

Further, even if the glass fibers are of the same type, the properties and forms of the waste generated from the above-mentioned processes vary greatly depending on the generation process.

For example, in a glass fiber manufacturing process, glass fiber waste with a large diameter is generated before the regular winding into a collet begins.

Some of this waste is rolled up, and some of it is unrolled.

As mentioned above, glass fiber waste has many different forms.

In other words, the diameter of the glass fibers, the number of bundled fibers, the type and form of the sizing agent (
Not only do they differ in length (wound or unwound), but also large amounts of waste are generated, both once heat-treated and unheat-treated.

A large amount of glass fiber waste is generated during the glass fiber manufacturing process or processing process, and recycling is strongly desired from the viewpoint of resource and energy conservation, but recycling has been difficult for the following reasons.

(1) When using glass fiber waste, it is necessary to give it certain properties depending on its use.

For example, in order to feed glass fiber waste into a kiln as a glass raw material, it is necessary to cut it into short pieces, but the cutting device must be able to simultaneously process a wide variety of types of waste as described above.

(2) Since the glass fiber waste contains some long pieces, they may get caught in the equipment or become clogged during the transportation to the cutting process or during the cutting process. easy.

(3) Glass fibers have a large dimension in one direction;
In other directions, the dimensions are extremely small.

It also has high tensile strength and flexibility.

A glass fiber bundle is made up of a large number of such glass fibers, and is difficult to cut by normal means.

Cutting methods that use impact force, shearing force, grinding force, etc. are known, and various devices using these have been developed, but conventional devices do not For these reasons, it is extremely difficult to cut unprocessed glass fiber waste.

Previously, as disclosed in Japanese Patent Application Laid-Open No. 48-89447, a frame formed into a truncated inverted polygonal pyramid, a fixed blade fixed at an appropriate interval on an imaginary spiral along the inner surface of the frame, and an inclination of the frame A crushing device has been proposed that includes a rotary blade rotatably provided above and below the inner surface along the inner surface.

In the above device, it is difficult to cut the glass fiber debris, and the glass fiber debris clogs the droplet into the frame, preventing it from falling.

Therefore, it is an object of the present invention to provide a glass fiber cutting device that can reliably cut glass fibers that are difficult to cut by installing a cutting blade at the droplet.

Next, the configuration of the present invention will be explained in detail based on the embodiment shown in the drawings.The lower frame 1, the upper frame 2, and the hopper 3
It is made up of.

As shown in Fig. 1, the lower frame 1 has a horizontal partition wall 4 in the middle, a discharge chamber 5 on the upper side that communicates a part of the side wall with the outside, and a drive chamber 6 on the lower side. The main shaft 7 is vertically mounted from the drive chamber 6 to the upper frame 2 (inside the upper frame 2 fixed to the upper surface).

A driven bevel gear 8 is horizontally mounted on the lower end of the main shaft 7. A driving bevel gear 9 that meshes with the driven bevel gear 8 is supported by a shaft supporting member 10 provided outside the lower frame 1. 1 drive shaft 1
1 and is driven by a pulley 12 that is pivotally attached to a drive shaft 11.

On the other hand, the upper frame 2 is formed into an inverted truncated pyramid shape.

That is, the inner wall 13 is formed of a hexagonal cone.

Then, the fixed blade 14 is moved downward from the upper end of the opposing inner wall 13 so as to draw two spiral loci in a clockwise direction.・・・
. . . are made to protrude from each strip at intervals, and the positions are changed and fixed diagonally so that the two strips do not overlap vertically.

Further, a ring-shaped fixing member 16 is provided at the lower end opening 15 of the upper frame 2, and a plurality of small fixed blades 17. Multiple . . . are fixed.

In addition, in the drawing, the fixed blade 14. Although the mounting part of ... is raised, it may be straight.

On the other hand, the upper surface of the main shaft 7 is formed with an inclined surface 18, and a rotary blade mount 19 is fixed to the inclined surface.

The rotary blade mount 19 has an upper surface formed by the same slope 20 as the slope 18, and has a long mounting arm 21 extending upwardly at one end.・・・
A long rotary blade 22 having a length extending from the uppermost stage to the lowermost stage is fixed.

In addition, short mounting arms 21' are protruded from the rotary blade mount 19 at different angles to fix short rotary blades 22' which come into contact with the fixed blades 14 at the middle and lowest stages.

Further, a rotary blade 22'' is fixed to the fixed blade mounting base 19 at a different angle so as to contact only the lowermost fixed blade 14.

Then, as mentioned above, there are three rotating blades at 22°...
· are provided and opposing fixed blades 14. It is formed so that the number of blades that mesh with each other at the same time is as small as possible.

Further, a blade attachment ring 23 is fixed to the outer periphery of the lowermost end of the rotary blade mount 19, and the small fixed blade 17. A different number of small rotary blades 24. Multiple . . . are fixed.

According to the above description, the three rotary blades 22.・・・・・・
* are designed to have different lengths, but two short rotary blades of the same length may be used.

Furthermore, by configuring the long rotary blade 22 to have a length that projects from the upper surface of the upper frame 2, it is possible to perform a drawing action on the glass fibers.

The present embodiment is constructed as described above, and each rotary blade 22 is driven by the main shaft 7. 14 clockwise
The glass fibers are rotated at a low speed of about
When the glass fibers are introduced from the inner wall 13 of the upper frame 2
At this time, the fixed blades 14. which are provided at intervals fall. Falling is prevented by...

On the other hand, each rotary blade 22. ...and fixed blade 14.・・・
The glass fibers located between ... are cut by shearing action.

Note that the inclination angle of the fixed blade 14 and the rotary blade 22.・・・・・・
The inclination angles of the rotary blades 22.・・・・・・
It is better to make the angle a little steeper so that the glass fibers can easily penetrate.

Moreover, since each fixed blade 14 protrudes, the glass fibers are caught on the protruding edges and are torn and cut as the rotary blades 22 degrees rotate.

In addition, each fixed blade 14. . . . are arranged on a spiral trajectory, so as the rotary blade 14 rotates, the glass fibers fall while rotating in a spiral pattern and move below the upper frame, increasing the packing density of the glass fibers. gradually increase.

As the packing density increases, frictional action occurs between the glass fibers and the inner wall 13, and the frictional action causes grinding.

Incidentally, even if reliable cutting is not performed by grinding, the strength of the glass fiber itself is weakened, and the subsequent shearing action and tearing action can be easily carried out.

In the present invention, the glass fibers are rotated and dropped as described above, and the glass fibers are cut by repeating the actions of shearing, tearing, and grinding with a blade during this period.

Note that since the frame 2 has a conical shape, the fixed blades 14 on the upper side are arranged with wide intervals, but the fixed blades 14. The space between the two blades is narrowed, and the space surrounded by the fixed blades is narrowed, so the glass fibers can be cut into short pieces.

The glass fibers cut by the above-mentioned actions fall into the discharge chamber 5 from the lower end opening 15, but this lower end opening 15 also has a plurality of small fixed blades 17°... and a small Rotary blade 24. . . . are provided, so that the glass fibers are cut into even smaller pieces and discharged from the discharge chamber 5 to the outside.

Note that the distance between the fixed part 16 and the blade attachment ring 23 and the small fixed blade 1
By changing the number of small rotary blades 7 and 24, the length of cut fibers can be changed.

As described above, the present invention reliably separates a wide variety of glass fibers by causing the glass fibers to fall while rotating within a cone-shaped frame and repeating the different actions of shearing, tearing, and grinding. Cutting can be performed without clogging the frame.

Moreover, the fixed blades 14, 14. Rotating blade 2 that meshes with...
2.22',... are installed at different angles, fixed blade 14.14. In combination with the spacing between..., the number of pieces that engage simultaneously is reduced, so the load is small and the cutting action can be performed smoothly.

Furthermore, a small fixed blade 17 is also provided at the lower end opening 15 of the upper frame 2.
,17. . . . are fixed and have different numbers of small rotary blades 24, 24 . . . . are interlocked with each other, so that shredding can be easily performed and clogging of glass fibers can be prevented.

Further, since the upper surface of the driving main shaft 7 is formed by the inclined surface 18, the object to be cut can be smoothly dropped without being retained on the upper surface portion.

[Brief explanation of drawings]

The figures show an example of a device used to carry out the glass fiber cutting device according to the present invention. FIG. 1 is a sectional view thereof, FIG. 2 is a half-cut perspective view of the main part, and FIG. 3 is a plan view. be. 2 is a frame (upper frame).

Claims (1)

[Claims] 1. The upper side is connected to the discharge chamber 5 with the top surface and side walls open, and the lower side is connected to the discharge chamber 5.
A lower frame 1 separated by a horizontal partition wall 4 is provided in the drive chamber 6, and an inverted truncated pyramid-shaped upper frame 2 is fixed to the upper surface of the lower frame 1 so as to communicate with the discharge chamber 5. A plurality of fixed blades 14, 1 are installed at intervals on the inner wall 13 of the frame 2 at positions that draw two spiral trajectories, and the vertical positions are changed.
4. ... is fixed, and a main shaft 7 penetrating from the lower frame 1 to the upper frame 2 is rotatably mounted vertically, and the upper surface of the main shaft 7 is formed with an inclined surface 18, and the inclined surface 18 A rotary blade mount 19 is fixed to the main shaft 7 on the outer periphery of the rotary blade mount 19,
A rotary blade 22 with a length extending from the uppermost fixed blade 14 to the lowermost fixed blade 14 and a rotary blade 22 with a length ranging from the lower fixed blade 14 to the lower fixed blade 14 are attached to this rotary blade mounting base 19.
′, . . . are fixed radially, and a plurality of small fixed blades 1γ, .
... are fixed at intervals, and the small fixed blade 17.・・・・・・
. . , a different number of small rotary blades 24, 24 . A glass fiber cutting device characterized by fixing...