JPS5840500B2 - Method for forming reinforced laminated materials using carbon fibers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of forming a reinforced laminate using carbon fibers.

Traditionally, rotating machine parts such as gears, flywheels, and rotating cylinders of centrifugal separators have been manufactured for certain purposes to reduce weight, noise reduction, and load resistance. I'm here.

However, in the case of conventional Plus Deck laminated materials, such as polyester resin, they have poor heat resistance and cannot exhibit sufficient strength against centrifugal force and rotational torque applied by rotation. It had the disadvantage of being susceptible to separation and internal cracks.

The present invention aims to eliminate the above-mentioned drawbacks (and provide a method for forming a laminate material using carbon fiber as a reinforcing core material, which has excellent properties in other aspects as well. The basic details will be explained below.

The first feature of this invention is that the reinforcing core material is in the form of a tape of a constant width, and that the tape is made of carbon fibers that are braided so as to form a vertical and horizontal net (or cross) shape. It is.

The second feature is that a thermosetting resin such as an epoxy resin is thoroughly infiltrated into the entire network of the tape-shaped core material (applying or dipping) so that the tape is aligned in the horizontal direction (direction perpendicular to the axis). One piece is laminated in a spiral shape to form a shape.

FIG. 1 is a partially enlarged view of a tape-shaped core material 1 made of carbon fibers braided into a net shape according to the present invention. It consists of fibers in the width direction (centripetal fibers) lb which are braided to intersect at a substantially right angle or at an angle close to the same.

Fig. 2 is a perspective view showing the principle of a method for forming a cylinder for a centrifugal separator according to method 1 of the present invention, in which core material 1 is rolled up into a drum 2 (in the form of a coil and sequentially fed out). It is maintained in the same condition as before.

3 is a tape-shaped core material 1 whose planes are adjacent to each other in the horizontal direction 1
This is a spiral cylinder formed by sequentially laminating layers.The spiral layer is formed by, for example, a tape-shaped core material 1 on one side of which is wrapped around a core 4 of a certain size (which is wound in this order) (the other side end is a metal core 4). The inner periphery of the mold 5 (along which it is successively inserted, and while maintaining its horizontal position, the mold 5 is successively inserted into a cylindrical shape (this layer is laminated at an appropriate position 1). Guide rollers 6, suppression rollers 7, etc. for holding the core material are installed. The core 4 and the mold 5 are formed along these guides, feeds, and presses 1.

Therefore, in the method shown in FIG.
This rotation causes the core material 1 to move up and down (this causes the core material 1 to be stacked in a spiral shape).

8 is an immersion tank containing a melted bonding material 9 made of thermosetting resin such as epoxy resin;
This is equipped with a guide roller 10 for guiding the core material 1 into the binding material 9 and allowing it to pass therethrough to uniformly adhere the binding material 9 to the entire surface of the core material 1. Before the core material 1 is laminated into a cylinder shape ( At this point, a bonding material 9 is applied in advance.

In addition, when the binder 9 is attached (in this case, within the mesh of the net-like core material 1) (if the binder 9 does not penetrate,
After lamination, the adhesion at that part becomes insufficient, which may cause later delamination or cracking, so special measures must be taken.

That is, when applying or dipping the binding material 9 on the core material 11, the circumferential surface of the roller 10 is devised so that the mesh can be loosened by the guide roller 10, or the mesh is loosened by brushing the surface of the roller. A flange (not shown) is provided.

By any of these means, the network of the tape-shaped core material 1 is loosened, and the binding material 9 permeates the entire surface uniformly and reliably, thereby completely preventing the above-mentioned problems.

The core material 1 laminated into a cylindrical shape as described above is finally heated and compressed by the mold 5 and the core 4 and formed into a cylinder.

In the cylinder 3 formed in this way, even during centrifugation-like operation, the centripetal fibers 1b act against the centrifugal force applied to the centrifugal load 6ζ inside the cylinder peripheral wall, and Circle fiber 1a for rotational moment
It has the excellent effect of exhibiting extremely high strength performance, and also being able to almost completely prevent separation of layers in the axial direction by using the above-mentioned technique when applying the bonding material and dipping. It is something that can be demonstrated.

Next, we will discuss one difficulty in forming gear materials and flywheels using method 1 of the present invention.

FIG. 3 is a perspective view showing a gear material and a gear formed by the same method as in FIG. 2, and A in the same figure shows the gear material formed into a ring shape.

The gear material 11 in this case is made by stacking the core material 1 horizontally and spirally, similar to the cylinder 3 in FIG.
If teeth are formed on the outer periphery, only the gear portion can be made of carbon fiber laminated material by fitting and fixing the metal wheel 12 inside as shown in FIG.

FIGS. 4A and 4B are perspective views and cross-sectional views showing one example of flywheel material formed into a disk shape by the method of the present invention, and as shown in FIG. 4A, the wheel material 13 is In comparison, the width of the tape-shaped core material 1 is wider, but the other forming principles are the same as in Example 2.

FIG. 4B shows a state in which the flywheel material 13 is press-molded using a mold 14 and the core is press-formed using a mold 15.

In each case, since the tape-shaped core material 1 is bent horizontally into a spiral shape, the fibers on the outside of the circular finished product become coarse and the fibers on the inside become dense, but in the case shown in FIG. Since the required amount (length) of the circle fibers 1a differs near the inner periphery and on the outer periphery, it is preferable to keep the outer portions longer in the process of braiding the core material 1 accordingly.

For example, it is effective to wind the core material 1 into a cylindrical and spiral shape having the same inner and outer diameters as the finished product at the time of winding the core material 1 onto the supply drum.

By the way, it is difficult to make the gear material by the method of the present invention and finish it with a normal special steel hob because it damages the hob. This is preferably done by polishing.

Since the present invention is constructed as described above, according to this method, an extremely excellent plastic laminate can be obtained as described below.

(1) It has significantly higher heat resistance than when thermoplastic resin is used, has properties comparable to those of metals in terms of strength, and has a high modulus of elasticity.

(2) In the case of gears, they have excellent wear resistance and are very effective in preventing noise.

(3) It has better fatigue strength than reinforced plastics using glass fiber.

(4) Due to the action of centripetal fibers and circle fibers, internal stress against centrifugal force and rotational moment is high, and each laminated layer is thin and has excellent adhesive properties, so interlayer separation is difficult to occur.

(5) Since the core material and the binding material are uniformly distributed in the circumferential direction, the wheel balance is good.

(6) Since it is extremely lightweight compared to other materials, it has little inertia during rotation and has little adverse effect on other mechanical parts even with rapid switching operations.

[Brief explanation of drawings]

FIG. 1 is a partially enlarged view showing an example of a core material used in the practice of the present invention, FIG. 2 is a perspective view showing the principle of the method of forming a cylinder during centrifugation by the method of the present invention, and FIG. 3A , B is a perspective view showing an example of a gear material and a gear according to the present invention, and FIGS. 4A and 4B are a perspective view and a sectional view showing a flywheel material according to the invention and its molded state. 1...Heartwood, 1a...Circle fiber,
1b... Centripetal fiber, 2... Supply drum, 3... Cylinder, 4... Core, 5
...Mold, 6...Guide roller 7.
... Suppression roller, 8 ... Dipping layer, 9 ...
...Binding material, 10...Guide roller 1
1... Gear (material), 12... Wheel, 13... (fly) wheel material, 14...
...Mold, 15...Mold with core.

Claims (1)

[Scope of Claims] 1. Carbon fibers in the shape of a net or cross and tape, consisting of an appropriate number of longitudinal circle fibers and centripetal fibers that are braided in the width direction so as to intersect with the circle fibers. A thermosetting resin is coated or adhered to one core material made of aluminum, the entire surface of which is sealed, and then the core materials are laminated in a spiral shape (overlapping one another in a horizontal state) and pressure molded. A method for forming a reinforced laminated material using Nibon fibers. 2 A spirally laminated core material is formed into a cylindrical shape to form a rotary cylinder material for a centrifugal separator. 3. A method for forming a reinforced laminated material using carbon fiber as described in claim 1 (a method for forming a reinforced laminated material using carbon fibers as described in claim 1), in which a core material laminated in a spiral shape is molded into a ring shape to form a material for a gear. Molding method. 4. A method for molding a reinforced laminated material using carbon fibers as set forth in claim 1, in which a core material laminated in a spiral shape is molded into a disk shape to form a flywheel material.