JPH0421805Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Purpose of the Invention" (Field of Industrial Application) The present invention relates to a glass fiber cutting device for cutting glass fiber waste.

(Prior Art) This type of cutting device was previously proposed by the applicant for the utility model registration in Japanese Patent Application Laid-Open No. 135741/1983. This device has multiple fixed blades fixed to an inverted truncated cone-shaped frame at intervals in a spiral trajectory, and multiple rotating blades corresponding to the fixed blades. The scraps are rotated and dropped, while the blades repeatedly shear, shred, and grind the scraps.

(Problem to be solved by the invention) Glass fiber waste is divided into large diameter pieces (100 to 200μ) that are generated during the glass fiber manufacturing process before the regular winding into a collect starts, and glass fiber waste that is generated during the fiber collecting process or secondary processing. It can be roughly divided into small diameter ones (5 to 25μ) that are generated during the process.

Glass fiber waste with a large diameter is strong and easily breaks, and cutting can be facilitated by the grinding action of the cut and broken surfaces, making it possible to perform the cutting operation satisfactorily with conventional equipment. .

However, glass fiber layers with a small diameter have high tensile strength, are flexible, and are difficult to break, and in particular, scraps that are rolled up like a ball of wool will remain in their original form and rotate simultaneously with the rotation of the rotary blade. It falls downward without being cut, and the load increases,
There were cases where the rotation of the rotary blade was hindered.

"Structure of the Invention" (Means for Solving Problems) The present invention includes an inverted truncated pyramid-shaped upper frame 2 on the upper surface of a lower frame 1 having a discharge chamber 9 with an open upper surface. A ring frame 3 is fixed on the top surface of the ring frame 3, a hopper 4 is fixed on the top surface of the ring frame 3, and a hopper 4 is fixed on the top surface of the ring frame 3.
A plurality of fixed blades 18, . A main shaft 11 penetrating the frame 2 is rotatably mounted vertically, and a plurality of small fixed blades 25, ..., extending from the upper surface of the small fixed blades 25, ... to the lowest ends of the fixed blades 18, ..., at different heights, are attached to the main shaft 11. A number of rotating blades 30 ₁ , 30 ₂ , ... are fixed radially, and a large number of small fixed blades 21 ,
... is fixed, and the small fixed blade 21 is attached to the main shaft 11 in the opposite position.
It is made up of fixed small rotary blades 32, . . . of different numbers.

(Example) This example will be described in detail based on the drawings. It is composed of a lower frame 1, an upper frame 2, a ring frame 3, and a hopper 4.

As shown in FIG. 1, the lower frame 1 is provided with a cylindrical bearing member 5 at the center of the upper part, a part of which is supported by a chute 6, and the other part by a horizontal partition wall 7, so that it can be released upwardly. a discharge chamber 9 having an outlet 8;
A drive chamber 10 is formed on the lower side, and a main shaft 11 is vertically mounted from the drive chamber 10 to an upper frame 2 fixed to the upper surface of the lower frame 1. A driven bevel gear 12 is horizontally attached to the lower end of the main shaft 11, and a main bevel gear 13 that meshes with the driven bevel gear 12 is attached to a drive shaft 15 that is supported by a shaft support member 14 provided outside the lower frame 1. and is driven by a pulley 16' via a reduction gear 16.

The upper frame 2 is formed in the shape of an inverted truncated pyramid, and fixed blades 18 are provided on the inner wall 17 at positions that draw six spiral loci in a clockwise direction from the upper end downward.
... are placed at intervals of three per strip, and the positions are changed and fixed diagonally so that the two strips do not overlap vertically. Further, a ring-shaped fixing member 20 is provided in the lower end opening 19 formed by the vertical surface of the upper frame 2, and a plurality of small fixed blades 21, . . . are fixed to this fixing member 20 at intervals.

The ring frame 3 is fixed to the upper surface of the upper frame 2, the upper inner wall is formed into a tapered shape to provide a guide part 22, and the lower inner wall is formed vertically to form the fixing part 2.
3 will be provided. Three blade fixing members 24, 24', 24'' are fixed vertically to the fixing part 23, and a large number of small fixed blades 25, …,25′,…,25″,…
are fixed at positions that do not overlap in the vertical direction. The small fixed blades 25, 25', and 25'' are provided obliquely in the direction of rotation so that they can shear debris and guide it to the lower part.

The hopper 4 has an inverted truncated pyramid shape, and an inner wall 26 is formed into an octagonal pyramid shape and is fixed to the upper surface of the ring frame 3. Baffle plates 27, . . . shown in FIG. 1 are fixed to the lower center of each inner wall 26, .

On the other hand, a rotary blade mount 28 is pivotally attached to a portion of the main shaft 11 located within the upper frame 2. This rotary blade mounting base 28 has five mounting arms 29 ₁ , 29
₂ ,... ₂₉₅ are provided radially protruding at equal angles. The longest mounting arm 29 ₁ protrudes above the uppermost blade fixing member 24 attached to the ring frame 3, and the shortest mounting arm 29 ₅ touches the upper surface of the lowermost blade fixing member 24''. The heights _of the other mounting arms 29 ₂ , . 3 is formed with a vertical surface, and the lower end is formed with an inclined surface opposite to the inclined surface of the upper frame 2, and the rotary blade 3 is formed on this inclined surface and the vertical surface, respectively.
0 ₁ , 30 ₂ , ...30 ₅ are fixed.

In addition, the main shaft 1 located below the rotary blade mounting base 28
1, a blade attachment member 31 is pivotally attached, and a number of small rotary blades 32, . . ., which are different in number from the small fixed blades 21, .

In addition, in FIG. 3, 33 is a motor, and 34 is a pulley.

(Function) This embodiment is constructed as described above, and various types of glass fiber waste, such as glass fiber waste that has become like a ball of wool, and waste from matte products, are thrown into the hopper 4, and the main shaft 11 is rotated clockwise. Rotate at about 10 to 40 rpm.

The glass fiber waste rotates while riding on the upper surfaces of the mounting arms _{29 1 ,} 29 ₂ ,... to which the rotary blades 30 1 , 30 ₂ , ... are attached, and the glass fiber waste located between the rotary blades 30 ₁ , ... It is cut by meshing with the small fixed blades 25, . . . , and the wool ball-like material is loosened little by little. Further, the glass fiber debris on the mounting arms 29 ₁ , ... rotates in the same direction as the rotation direction of the main shaft 11, but since there are a number of baffle plates 27, ..., the glass fiber debris on the mounting arms 29 1 , ... collides with the baffle plates 27, .... Rotation is prevented and reversal is caused, and the unraveled debris is prevented from falling from between the rotary blades 30 ₁ , . . . , and only the loosened small lumps are allowed to fall into the upper frame 2, thereby ensuring the cutting action. In the upper frame 2, the glass fiber debris located between the rotating blades 30 ₁ , . . . and the fixed blades 18, . . . is cut by shearing action.
In addition, since the fixed blades 18, ... protrude, glass fiber debris gets caught on the protruding edges, and the rotary blades 30
₁ ,... is torn and cut as it rotates.

In addition, since each fixed blade 18,... is arranged on a spiral trajectory, as the rotary blades 30 ₁ ,... rotate,
Glass fiber waste is dropped while rotating in a spiral,
By moving downward, the packing density of the glass fiber waste is gradually increased.

As the packing density increases, the cut surfaces of the glass fibers rub against other glass fibers and a frictional action occurs between them and the inner wall, and this frictional action causes grinding.
Incidentally, even if the cutting is not performed reliably by grinding, the strength of the glass fiber itself is weakened, and the subsequent shearing action and tearing action can be performed easily.

Next, the lower small fixed blades 21,... and the small rotary blades 3
2, . . . , it is further cut into pieces, falls into the discharge chamber 9, and is discharged from the discharge port 8 to the outside.

In the above embodiment, the small fixed blades 25,...
Although it has been described that the inverted truncated pyramid is arranged in three stages, the present invention is not limited to this, and the number of stages and the number of angles of the inverted truncated pyramid can be freely changed.

Further, the number of rotary blades 30 ₁ , . . . is not limited to five, and the number can be freely selected.

"Effect of the invention" In this invention, the glass fiber waste is placed on the upper surface of the rotary blades 30 ₁ , ... and cut between the small fixed blades 25 , ... while rotating, so that it becomes a ball of wool with a narrow diameter. Since the glass fiber waste is cut into finely loosened pieces and dropped into the upper frame 2, large lumps do not fall into the upper frame 2, and overload can be prevented and cutting can be performed reliably. .

In addition, cutting, tearing, and grinding can be performed within the upper frame 2 in the same manner as in the past, thereby ensuring reliable cutting.

[Brief explanation of drawings]

The figures show an embodiment of the glass fiber cutting device according to the present invention, in which Fig. 1 is a longitudinal sectional view thereof, Fig. 2 is a partially cutaway perspective view of the main part, and Fig. 3 is a plan view. It is. In the figure, 1 is a lower frame, 2 is an upper frame, 3 is a ring frame, 4 is a hopper, 9 is a discharge chamber, 11 is a main shaft, 18 is a fixed blade, 21 is a small fixed blade, 25 is a small fixed blade, 30 ₁ , 30 ₂ , . . . are rotating blades, and 32 is a small rotating blade.

Claims (1)

[Scope of utility model registration request] An inverted truncated cone-shaped upper frame 2 is mounted on the upper surface of a lower frame 1 having a discharge chamber 9 whose upper surface is open.
A ring frame 3 is placed on the top surface of this upper frame 2.
A hopper 4 is fixed to the upper surface of the hopper 4, a plurality of fixed blades 18, . ,... are fixed, and a main shaft 11 penetrating from the lower frame 1 to the upper frame 2 is vertically rotatably mounted, and the small fixed blades 25, ... are attached to the top surface of the fixed blades 18,... A plurality of rotating blades 30 at different heights extend along the lower end.
₁ , 30 ₂ ,... are fixed radially, and the upper frame 2
A large number of small fixed blades 21,... are fixed to the inner periphery of the lower end of the
A glass fiber cutting device comprising a small fixed blade 21 and a different number of small rotary blades 32, . . . fixed to a main shaft 11 in opposing positions.