JPH03213159A - Treatment of fiber reinforced plastic molding and apparatus for cutting treatment thereof - Google Patents

Abstract

PURPOSE:To treat a fiber reinforced plastic molded product into fine pieces or a powder impossible heretofore and to reuse an unnecessary molded product by forcibly sending a fiber reinforced plastic molded product into a rotary cutter and cutting the same by the rotary cutter. CONSTITUTION:A treatment apparatus is equipped with at least a pair of rotary cutters A, B constituted by arranging a plurality of discs 21 having a large number of blades 22 arranged thereto in the circumferential direction thereof to rotary shafts 3, 4 in the axial direction thereof and the rotary cutters A, B forming a pair are constituted so that the disc 21 thereof are mutually fitted. A forcible feed apparatus consisting of a belt conveyor 55 and forcible feed pawls 56 feeds a fiber reinforced plastic molded product F to the treatment apparatus to forcibly send the same thereto and the molded product F is cut by the rotary cutters A, B. As a result, the molded product F is treated to be formed into fine pieces or a powder impossible heretofore to make it possible to reuse the unnecessary molded product F.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a cutting technology, and particularly to a method and a cutting device for a fiber-reinforced plastic molded product.

[Conventional technology] Conventionally, no method or cutting equipment has been developed for processing unnecessary fiber reinforced plastic (FRP) molded products, and when disposing of unnecessary FRP molded products, unprocessed They either left them at garbage collection points or buried them in the ground.

[Problems to be Solved by the Invention] However, since plastic is chemically very stable, it will not corrode or rot even when buried in the soil. Therefore, in order to leave FRP molded products that are endlessly discarded unprocessed or bury them in the ground, a huge amount of land is required, and there is a problem that it may become impossible to dispose of them in the future. .

The present invention was made in view of such problems, and
The object of the present invention is to provide a molded product processing method and cutting processing device.

The above and other objects and novel features of the present invention will become apparent from the description of this specification and the accompanying drawings.

[Means for Solving the Problems] An overview of typical inventions disclosed in this application is as follows.

According to the first aspect of the invention, the fiber-reinforced plastic molded product is forcibly fed into a rotary cutter, and by the rotary cutter! This is a JI fiber-reinforced plastic molded product that is cut.

The invention according to claim 2 provides a pair of rotary cutters comprising at least one pair of rotary cutters configured by arranging a plurality of disks each having a plurality of blades arranged in the circumferential direction in the axial direction of a rotary shaft. It is equipped with a processing device configured so that the disks fit into each other, and a forced conveyance device that transports the fiber-reinforced plastic molded product to the processing device and forcibly feeds it into the processing device. be.

[Function] According to the above means, it is possible to cut an unnecessary FRP molded product and process it into pieces or powder, which was previously impossible. This makes it possible to reuse unnecessary FR and P molded products.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic configuration diagram of a cutting processing apparatus which is an embodiment of the present invention, and FIG. 2 shows a side view of the processing apparatus in FIG. 1.

As shown in FIG. 1, in this cutting processing device, F
A forced conveyance device for horizontally conveying the RP molded product and forcibly feeding it into the treatment device is connected to the entrance side of the treatment device.

The above-mentioned forced conveyance device includes a belt conveyor 55 and one or more forced conveyance claws 5, for example, two forced conveyance claws 5 mounted on the belt.
6.56 is the main component. This belt conveyor 55 is driven by a belt conveyor drive motor (not shown), and conveys the FRP molded products to the terminal end thereof.
It is configured such that molded products can be sent to the processing equipment in a systematic manner.

Note that the forced conveyance claws 56, 56 are provided independently from the belt conveyor 55, and are driven in synchronization with the rotation of the belt conveyor 55 by a drive source, such as a motor, different from the belt conveyor drive motor (not shown). Of course, it is good to do so.

On the other hand, the processing device connected to the terminal end of the belt conveyor 55 will be explained based on FIG. Bearings 2. and 2. are parallel to each other.・
It is supported through... Each rotating shaft 3, 4 has a disk 21 having a plurality of blades 22 (FIG. 5) arranged along the circumferential direction in a portion extending inside the box 1, and a disk 21 having a smaller diameter than the disk 21. and collars 6 are alternately externally supported in the axial direction, and each constitutes a rotary cutter A, B as a whole.

When these rotary cutters A and B are installed in the box 1, the adjacent discs 21 and 21 of one rotary cutter
A disk 21 of the other rotary cutter is fitted in between. Also, this rotary cutter A.

In B, the distance between the rotating shafts 3 and 4 is set to be 1/2 the sum of the inner diameter of the disk 21 and the inner diameter of the collar 6. As a result, when the rotary cutters rotate, the cutting edge of the blade 22 of the disk 21 in one rotary cutter comes into contact with the outer peripheral surface of the collar 6 in the other rotary cutter. As shown in FIGS. 3 and 4, the blade 22 (see FIG. 5) of the rotary cutters A and B has a rounded edge on both ends.
On the other hand, the shape of the portion of the rotary cutters A and H that fits the blade 22 (receiving portion) is similar to that of the blade 22.
The blade is configured to have a complementary relationship with the cutting edge of the blade.

As a result, the rounded portion of the blade 22 comes into contact with the stepped portion of the disk 21, and no gap is created between them, so that the FRP molded product is reliably shredded.

Further, a rotating shaft 3 protruding outward from the box 1,
Spur gears 7.8 that mesh with each other are attached to one end of 4, respectively. Furthermore, a motor 31 is attached to the other end of the rotary shaft 3 protruding outward from the box l via a speed reduction mechanism (not shown). The rotary cutter A is rotationally driven by this motor 31, and further, the rotary cutter B is rotationally driven in the opposite direction to the rotary cutter A through the spur gears 7 and 8. As a result, the transported FRP molded product is cut by rotary cutters A and B.
The cut pieces or powder are drawn in between and cut into pieces, and the cut pieces or powder are discharged to the back of the box l.

Also, inside box 1, there is a disc 21 and a collar 6.
A comb-like fixed blade 12.12 is disposed at an outer position of the disc 21 and comes into contact with both the cutting edge of the blade 22 and the collar 6.

Also, if we explain the disk 21 (see Figure 5)
On the outer periphery of the disk 21, a plurality of blades 22 having the same shape are arranged along the circumferential direction.

As shown in FIG. 6, blades 23 with small cutting surfaces 23a and blades 24 with large cutting surfaces 24a may be alternately arranged on the outer periphery of the disk 21. In this way, the load applied to the blades 23 and 24 at once is reduced, and the FRP cutters A and B are
Improves the workability of cutting molded products. Alternatively, a twisted blade may be used.

Further, in the cutting processing apparatus of this embodiment, the rotary cutter A,
a load detection device (not shown) that detects the load state of B;
The motor 3 is activated in response to a signal from a load detection device (not shown).
1 and a control device (not shown) that controls a belt conveyor drive motor (not shown).

By this load detection device (not shown) and control device (not shown), when the FRP molded product becomes clogged during the cutting process, the motor 31 and the belt conveyor drive motor (not shown) are stopped for a predetermined period of time. (for example, 1 to 3 seconds) in the opposite direction. After the jam is cleared, the machine is rotated again in the same direction as before stopping, and the clogged FRP molded product is cut again.

Next, a cutting method using this cutting device will be explained.

First, the belt conveyor 55 removes unnecessary FR.
Near the rotary cutters A and B of the P molded product cutting equipment (
conveyed to the end of the belt conveyor 55).

Next, the FRP molded product is sent between the rotary cutters A and B by the forced conveyance claws 56 and 56 that have been sent to the terminal position by the belt conveyor 55, and the blades 22 of the rotary cutters A and B are mainly sheared between each other. It is cut into a predetermined size by the action. Note that cutting of the FRP molded product is also performed by the interaction between the cutting edge of the blade 22 and the outer circumferential surface of the collar 6 facing it.

During this cutting process, the load state applied to the rotary cutters A and B is detected by a load detection device (not shown), and a control device (not shown) controls the motor 31 according to the detection signal.
The rotation of a belt conveyor drive motor (not shown) is controlled.

In other words, if the FRP molded product is cut off, the motor 3
1 is once stopped and then rotated in the opposite direction for a predetermined period of time (for example, 1 to 3 seconds). As a result, the blockage is cleared, and then the motor 31 is rotated again in the same direction as before stopping, and the clogged FRP molded product is cut off.

At this time, the belt conveyor drive motor (not shown) is also synchronized with the rotation of the motor 31 by the control device (not shown), and is first stopped and then reversely rotated.

According to the processing method using the cutting processing apparatus of the embodiment configured as described above, the following effects can be obtained.

That is, since the unnecessary FRP molded product is forcibly fed into the cutting device and cut, it can be made into small pieces or powder, which was not possible in the past. Therefore, when discarding an unnecessary FRP molded product, the land area required for disposal is smaller than if the product is left untreated or buried in the ground.

Moreover, it becomes possible to solidify the pieces or powder and reuse them as construction materials, etc., thereby saving resources and energy.

Further, according to this processing device, the cutting edge of the blade 22 or the blade 23.24 and the blade 22.23.2
4 has a complementary relationship with the shape of the part that receives the blades 22, 2 when cutting the FRP molded product.
By preventing the formation of gaps on both sides of the blade edges of blades 22, 23, and 24, discharge of unprocessed material can be prevented, and F is also prevented at both ends of the blade edges of blades 22, 23, and
This means that RP molded products can be cut very precisely.

Although the invention made by the present inventor has been specifically explained above based on Examples, it goes without saying that the present invention is not limited to the above Examples and can be modified in various ways without departing from the gist thereof. Nor.

For example, in the above embodiment, the rotary cutters A and B are arranged so that their rotary shafts 3 and 4 extend horizontally and are overlapped in the vertical direction. extending in the direction and arranged in parallel in the horizontal direction,
The FRP molded product may be configured to be pressed from above by the cutting cutters A and B for cutting.

Further, in the above embodiment, the rotary cutters A and B are arranged so that their rotary shafts 3 and 4 extend in the horizontal direction, but the rotary cutters A and B are arranged so that their rotary shafts 3 and 4 extend in the vertical direction. They may be arranged so as to extend.

[Effects of the Invention] The effects obtained by typical inventions disclosed in this application are briefly explained below.

That is, at least one pair of rotary cutters is provided, each of which is constructed by arranging a plurality of disks each having a plurality of blades arranged in the circumferential direction in the axial direction of a rotary shaft, and the disks in the pair of rotary cutters are fitted into each other. A rotary cutter of a cutting device includes a processing device that is configured to fit together, and a forced conveyance device that conveys the fiber-reinforced plastic molded product to the processing device and forcibly feeds the fiber-reinforced plastic molded product to the processing device, Since the fiber-reinforced plastic molded product is forcibly fed and cut by the rotating cutter, it can be made into small pieces or powder, which was previously impossible. Therefore, FRP is no longer needed.
When disposing of molded products, the land area required for disposal is smaller than that of leaving them untreated or burying them in the ground.

Furthermore, it becomes possible to solidify the pieces or powder and reuse them as building materials, etc., thereby saving resources and energy.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of a cutting device that is an embodiment of the present invention, FIG. 2 is a side view of the processing device in FIG. 1, and FIG. 3 is a diagram of a rotary cutter of the processing device in FIG. 4 is a cross-sectional plan view of the rotary cutter in FIG. 3, FIG. 5 is a front view of the rotary cutter in FIG. 3, and FIG. 6 is a front view of a modification of the rotary cutter in FIG. 3. . 3.4... Rotating shaft, 21... Disc,
22.23.24...Blade, A, B...Rotating cutter, F...Fiber reinforced plastic (FRP)
Molding. Figure 3 Figure 3

Claims (2)

[Claims] (1) A method for processing a fiber-reinforced plastic molded product, which comprises forcibly feeding the fiber-reinforced plastic molded product into a rotary cutter, and cutting the fiber-reinforced plastic molded product with the rotary cutter. (2) At least one pair of rotary cutters configured by arranging a plurality of disks each having a plurality of blades arranged in the circumferential direction in the axial direction of a rotating shaft, and the disks in the pair of rotary cutters are mutually connected to each other. A cutting process comprising a processing device configured to fit together, and a forced conveyance device for transporting a fiber-reinforced plastic molded product to the processing device and forcibly feeding it into the processing device. Device.