JP2013018265A - Method and equipment for manufacturing fiber-reinforced plastic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify equipment for manufacturing fiber-reinforced plastic and to provide a method for shortening manufacturing time.SOLUTION: A winding form 5 rotating around the axis 4 is provided with first pin members 6a-6d which move between positions of different angles from the center of rotation and positions on one line. A pair of second pin members 7a and 7b can rotate around the opposition line and can be made to approach and leave each other by a guide track. In a first process, a filament bundle is wound circularly, being taken out from a filament supply part 2. In a second process, the second pin members 7a and 7b are inserted into a loop of the filament bundle wound circularly in the first process and then are made to leave each other. On the occasion, the first pin members 6a-6d move to the positions on one line. In a third process, the second pin members 7a and 7b are rotated around the opposition line and the filament bundle is further supplied and wound around the filament bundle being rotated.

Description

The present invention relates to a manufacturing method and a manufacturing apparatus for fiber reinforced plastics (FRP), which is a composite material in which strength is improved by putting fibers such as carbon fibers and glass fibers into plastic.

Fiber reinforced plastics are less corrosive, have high strength, can be reduced in weight, and are expected as structural materials that can replace metal materials. For example, Patent Literature 1 and Patent Literature 2 disclose a device including a fiber supply unit and two pins provided at intervals in the lateral direction as a technique for mass-producing carbon fiber reinforced plastic (CFRP). Has been. In this apparatus, the long fiber bundle is pulled out from the fiber supply section while applying an adhesive made of polyimide resin or the like to a long fiber bundle in which a plurality of long fibers such as carbon fibers or aramid fibers are bundled. The long fiber bundle is hung by reciprocating between the two and hanging the long fiber on the pin.

JP 2005-144903 A JP 2003-225950 A

In the fiber reinforced plastic manufacturing apparatus disclosed in Patent Documents 1 and 2 described above, the fiber supply unit that supplies the long fiber bundle reciprocates between the two pins, so that the moving distance is large and the mechanism is complicated. At the same time, the turnaround time of fiber reinforced plastic production is long due to the travel time.
The present invention was devised in view of such circumstances, and provides a method and an apparatus for manufacturing a fiber reinforced plastic that can simplify the apparatus for manufacturing the fiber reinforced plastic and reduce the manufacturing time. With the goal.

  In order to solve the above problems, in the present invention, at least four first pin members that are mounted on a winding mold that rotates about an axis and move between a position at a different angle and a position on a line from the rotation center are provided. A first step of winding the long fiber bundle in an annular shape while inserting a pair of second pin members on the inner circumferential side of the long fiber bundle wound in an annular shape in the first step; The pair of second pin members are flattened by moving the pair of second pin members apart from each other on the one line while moving the pin members linearly on the diameter, thereby flattening the long fiber bundle wound in the annular shape. And the second step of transferring the pair of second pin members in the same direction to rotate the flattened long fiber bundle around its length direction, so that the long fiber bundle is formed on the outer periphery thereof. The third step of supplying and wrapping It is a sign.

According to the present invention, since the long fiber bundle is wound by the winding type rotational movement, the apparatus is simplified, and the turnaround time of the fiber reinforced plastic manufacturing is shortened because the apparatus is wound in a short time. is there.

It is a side view which shows the manufacturing apparatus of fiber reinforced plastics. It is a top view which shows the apparatus. It is a front view which shows the same apparatus. It is explanatory drawing which shows the state in the manufacture process of a fiber reinforced plastic. It is a figure which shows the tube diameter of a long fiber bundle, a 1st pin member, and a 2nd pin member. It is a figure which shows another Example. It is a figure which shows preparation of a horizontal line.

Hereinafter, the fiber reinforced plastic manufacturing apparatus 100 of an Example is demonstrated in detail with reference to drawings.
As illustrated in FIGS. 1 to 3, the manufacturing apparatus 100 includes a fiber supply unit 2, a first fiber processing unit 3 </ b> A, and a second fiber processing unit 3 </ b> B.
The first fiber processing unit 3A and the second fiber processing unit 3B are supported on the first support unit 1a and the second support unit 1b, respectively, and the first support unit 1a and the second support unit 1b are in the direction a1 (FIG. 1). It is arranged so as to be capable of relative movement in the left-right direction).
The 1st support part 1a is fixed on the floor surface b1, and the motor 11 is provided. The motor 4 rotates the shaft 4 in the direction a1 through a power transmission system (not shown).

The third support portion 1c is disposed so as to be relatively movable with respect to the second support portion 1b in the direction a2 (direction perpendicular to the paper surface of FIG. 1). The fiber supply unit 2 is supported on the third support unit 1c, and continuously supplies the long fiber bundle w1 while adhering a thermosetting resin made of polyimide resin or the like as an adhesive.

Referring to FIG. 3, the first fiber processing unit 3 </ b> A includes a winding mold 5 that is rotatably installed via a shaft 4 in the direction a <b> 1. The winding die 5 includes four or more first pin members (four in the illustrated example) 6 a, 6 b, 6 c, 6 d that are separated from each other on a circumference around the shaft 4. The first pin members 6a, 6b, 6c, and 6d rotate around the shaft 4 to draw out and wind up the long fiber bundle w1 from the fiber supply unit 2.

Referring to FIG. 2, the second fiber processing unit 3B includes a pair of second pin members 7a and 7b facing each other. The second pin members 7a and 7b rotate around the opposing line c1 that connects them. The second pin members 7a and 7b pull the annular long fiber bundle w1 group wound around the winding die 5 and deform it linearly. And the cyclic | annular long fiber bundle w1 group after a deformation | transformation is rotated to the surroundings of the opposing line c1, the long fiber bundle w1 sent out from the fiber supply part 2 is wound to the peripheral direction, and the outer peripheral range is wrapped.

On the floor surface b1, the guide tracks 12a and 12b in the direction a1 are arranged at intervals. The second support portion 1b is fixed to the upper surfaces of a pair of left and right saddles 13a and 13b engaged with the guide tracks 12a and 12b so as to be slidable in the direction a1. Further, the second support portion 1b moves in the direction a1 with respect to the first support portion 1a by using the driving force of the drive portion (not shown).

Referring to FIG. 3, a guide track 16 in the direction a2 is provided between the left and right guide tracks 12a and 12b and on the floor b1 between the first support portion 1a and the second support portion 1b. A saddle 17 is slidably engaged with the guide track 16 in the direction a2. Further, the saddle 17 is provided with a second guide track 18 in the direction a1. A third saddle 19 is slidably engaged in the direction a1 on the second guide track 18. The fiber supply unit 2 is installed on the third saddle 19. The long fiber bundle w <b> 1 is pulled out from the fiber supply unit 2 by the rotation of the winding die 5. If friction is applied to the drawer, tension can be applied to the long fiber bundle w1.

The winding die 5 includes a plate member 21 concentrically fixed to the shaft 4, a first rotating beam 22 a fixed to the plate member 21 and extending from both sides of the shaft 4 in the diametrical direction, and the shaft member 21 around the shaft 4 A second rotating beam 22b extending from the shaft 4 to both sides in the diameter direction, and a state in which the second rotating beam 22b is rotated about the shaft 4 in the same body with respect to the plate member 21 independently of the rotating state. A stopper 23 for switching between the two states is provided. The stopper 23 includes a lock pin 23a and a hole 24b provided in the plate member 21 at a position rotated 90 degrees from the first rotation beam 22a. The second rotation beam 22b is positioned at this position and locked to the hole 24b. The pin 23a is inserted to fix the second rotating beam 22b. The second rotating beam 22b is urged by a tension urging mechanism 20 such as a spiral spring so as to remain at a position fixed by the lock pin 23a.

The first rotating beam 22a has first pin members 6a and 6b at both ends thereof, and the second rotating beam 22b has first pin members 6c and 6d at both ends thereof. The radial position of each pin member from the shaft 4 can be basically anywhere, but it is arranged so that it does not overlap each other when the first rotating beam 22a and the second rotating beam 22b are in a straight line as will be described later. To do. A pair of protrusions f1 and f2 are preferably formed at front and rear portions outside the outer peripheral portion of the first pin members 6a, 6b, 6c and 6d as shown in the drawing.

  A guide track 15 longer than the fiber-reinforced plastic rod to be manufactured is formed at the height of the shaft 4 along the direction a2 in the second fiber processing unit 3B. The guide track 15 is supported on the saddles 13a and 13b via support columns 14a and 14b. Overhanging base members 24a and 24b are mounted on the guide track 15, and slide by the driving force of a driving unit (not shown). As a drive unit for driving the overhanging base members 24a and 24b, it is possible to move close to and away from each other using a fluid pressure expansion / contraction cylinder device or a screw feeding device. Servo motors 25a and 25b are provided on the outer side surfaces of the overhanging members 24a and 24b, respectively, and their output shafts g1 and g2 rotate around the opposing line c1. And each hook-shaped support piece 26a, 26b is being fixed to the front-end | tip of each output shaft g1, g2, and 2nd pin member 7a, 7b is an output shaft at the inner end part of each hook-shaped support piece 26a, 26b. It is provided along the diameter direction of g1 and g2.

Next, an operation and an example of use of each part of the manufacturing apparatus 100 described above will be described.
First, the first step is performed.
The relative position of the second rotating beam 22b with respect to the first rotating beam 22a is fixed by the lock pins 23a and 23b so as to be rotated 90 degrees around the axis 4 as shown in FIG.

Further, the long fiber bundle w1 wound in advance in a roll shape is supplied onto the fiber supply unit 2 so that the long fiber bundle w1 can be pulled out from the fiber supply unit 2. For example, the fiber supply unit 2 is positioned at a central position i1 on the guide track 16 and at a forward position j1 (FIG. 1) on the guide track 18. And the 2nd support part 1b is located in the backward position j2 on the guide track 6a, 6b.

Under this state, the long fiber bundle w1 is pulled out from the fiber supply unit 2 by pulling the tip of the long fiber bundle w1 to any one appropriate first pin member 6a, 6b, 6c or 6d of the winding die 5. Stop it by hanging it around.

  Next, the motor 11 is started and the winding die 5 is rotated around the shaft 4. By the rotation of the winding die 5, a pulling force is applied to the long fiber bundle w <b> 1, and the long fiber bundle w <b> 1 is pulled out against the friction set in the fiber supply unit 2 by this pulling force. The long fiber bundles w1 drawn out in this way are sequentially wound around the first pin members 6a, 6b, 6c, and 6d in a planned tension state. In addition, although the tension | tensile_strength provided here may be weaker than the tension | tensile_strength finally given by 2nd pin member 7a, 7b, it is a grade which does not produce looseness, and removed the lock pin 23a. Sometimes, the second rotating beam 22b does not change the angle around the axis 4 due to the tension of the long fiber bundle w1.

When the winding die 5 is rotated a predetermined number of times, the motor 11 is stopped. At the time of this stop, the long fiber bundle w1 is looped around the winding portion of all the first pin members 6a, 6b, 6c, 6d in a predetermined tension state in an annular shape. .

Next, the second step is performed.
The left and right second pin members 7a and 7b are placed in a horizontal posture by the motors 25a and 25b, and are positioned closer to the center of the guide track 15 (inside the first pin members 6a, 6b, 6c and 6d), and the second support portion 1b is brought close to the first support portion 1a on the guide tracks 6a and 6b. The second pin members 7a and 7b are positioned within the range surrounded by the first pin members 6a, 6b, 6c, and 6d and on the inner circumferential side of the long fiber bundle w1 wound in an annular shape. .

The pair of lock pins 23a is removed from the plate member 21, and the second rotating beam 22b is brought into a free rotating state. Under this state, the left and right projecting base members 24 a and 24 b are separated from each other on the guide track 15. By this movement, the annular long fiber bundle w1 formed by being wound around the winding die 5 in the first step is flattened linearly by the left and right second pin members 7a and 7b as shown in FIG. The second pin members 7a and 7b are tensioned with a tension corresponding to the driving force applied. When the long fiber bundle w1 is flattened in this way, the winding mold 5 rotates the first rotating beam 22a and the second rotating beam 22b horizontally around the axis 4, and the axis 4 of the winding mold 5 It becomes a line at the height position.
The tension of the flattened annular long fiber bundle w1 is detected by, for example, a load cell incorporated in the bowl-shaped member 26a. The separating force applied to the second pin members 7a and 7b is maintained so that the detected tension becomes the planned magnitude.

Next, the third step is performed.
The second support portion 1b is moved away from the first support portion 1a on the guide tracks 12a and 12b, and the annular long fiber bundle w1 flattened linearly in the second step is removed from the winding die 5. And the fiber supply part 2 is separated from the 1st support part 1a on the guide track 18.

Thereafter, the output shafts g1 and g2 of the servomotors 25a and 25b are rotated, and at the same time, the fiber supply unit 2 is moved on the guide track 15 from the right end to the left end. As a result, as shown in FIG. 4B, the long fiber bundle w1 drawn from the fiber supply unit 2 is wound around the outer peripheral range of the annular long fiber bundle w1, and the outer peripheral range is wrapped with the long fiber bundle w1. Become.

After finishing the above first to third steps, the left and right overhanging portions 24a and 24b are brought close to each other as necessary, and the half-finished product which is the annular long fiber bundle w1 that has been previously wrapped is left and right. It is removed from the 2-pin members 7a and 7b and conveyed to the drying chamber. The adhesive is heat-cured in the drying chamber to form a fiber-reinforced plastic rod product as shown in FIG. 4C.

An annular long fiber bundle w1 formed by running the long fiber bundle w1 around the winding die 5 gradually becomes thicker according to the number of times of running, and the long fiber bundle per turn on the inner peripheral side and the outer peripheral side. The length of w1 is different. Therefore, if the long fiber bundles w1 are randomly removed from the winding die 5, the long fiber bundles w1 on the inner peripheral side and the outer peripheral side enter and are disturbed. The long fiber bundle w1 on the inner peripheral side remains on the inner peripheral side, and the long fiber bundle w1 on the outer peripheral side needs to be passed to the second pin members 7a and 7b while remaining on the outer peripheral side. Even when the long fiber bundle w1 is stretched by the second pin members 7a and 7b, the inner long fiber bundle w1 remains on the inner peripheral side and the outer long fiber bundle w1 remains on the outer peripheral side. Should be located.

For this reason, in this embodiment, the first pin members 6a, 6b, 6c and 6d and the second pin members 7a and 7b use arcs. FIG. 5A is a front view of the winding die 5 in a state where the long fiber bundle w1 is wound. In the figure, the long fiber bundle w1 is wound by a thickness x. In this state, the difference in length between the inner peripheral side and the outer peripheral side of the long fiber bundle w1 can be calculated by the length of the surface where the first pin member is in contact with the long fiber bundle w1. Focusing on the first pin member 6a as shown in FIG. 5B, the surface in contact with the long fiber bundle w1 is an arc of about 90 degrees indicated by c in the drawing. Similarly, the other first pin members are also in contact with each other by an arc of about 90 degrees, and the total length of the arcs in which the first pin members 6a, 6b, 6c, and 6d are in contact with the long fiber bundle w1 is one cylinder. The length of the circumference. Therefore,

Difference between outer peripheral side and inner peripheral side = 2 (r + x) π−2rπ
= 2xπ --------- Equation 1

Here, r is the radius of the first pin member.
Thus, the difference between the inner periphery and the outer periphery does not depend on the radius of the first pin member.

On the other hand, when the long fiber bundle w1 is passed to the second pin members 7a and 7b as shown in FIG. 5C, the difference in length between the inner peripheral side and the outer peripheral side of the long fiber bundle w1 is as follows. When the lengths of the arcs in which the surfaces of the second pin members 7a and 7b are in contact with the long fiber bundle w1 are totaled, the length of the circumference of one cylinder is obtained. Therefore,
Difference between the outer peripheral side and the inner peripheral side = 2 (R + X) π−2Rπ
= 2Xπ ---------- Equation 2
Here, R is the radius of the second pin members 7a and 7b, and X is the thickness of the long fiber bundle w1 when received by the second pin members 7a and 7b.

Comparing Formula 1 and Formula 2, if the thickness is moved to the second pin members 7a and 7b while maintaining the thickness of the long fiber bundle w1, the inner fiber side and outer fiber side long fiber bundles w1 remain in their positions. It can be moved to. In other words, the long fiber bundles w1 on the inner peripheral side and the outer peripheral side can be moved while maintaining the positional relationship, so that the thickness of the long fiber bundle w1 is determined when the winding die 5 is wound. .

As apparent from the above, the shape of the contact surfaces of the first pin members 6a, 6b, 6c, 6d and the second pin members 7a, 7b and the long fiber bundle w1 is related, and does not depend on the other shapes. . Further, since the total length of contact of the long fiber bundle w1 that makes a round with the winding die 5 with the first pin member is related, it does not depend on the number, the radial position, and the angle of the first pin member.

In addition, in the above embodiment, the first pin members 6a, 6b, and 6c are used to move the inner fiber side and the outer fiber side long fiber bundles w1 while maintaining the positions as they are when moved to the second pin members 7a and 7b. The first rotating beam 22a and the second rotating beam 22b are aligned around the axis 4 and transferred to the second pin members 7a and 7b so that the radial position of 6d does not change. May be.

For example, the first pin members 6c, 6d are movable in the direction of the shaft 4 and are biased outward in the radial direction, and the second pin members 7a, 7b receive them. When receiving, the first pin members 6a, 6b, 6c, 6d are aligned on a straight line in the direction in which the second pin members 7a, 7b are separated. In this way, if the long fiber bundle w1 is always tensed and the long fiber bundle w1 is not loosened from the first pin members 6a, 6b, 6c, 6d, it can be passed to the second pin members 7a, 7b. The long fiber bundles w1 on the side and the outer peripheral side can be moved while maintaining their positions.

In the above embodiment, the adhesive is applied while pulling out the long fiber bundle w1 in the fiber supply unit 2, but the long fiber bundle w1 impregnated with the thermosetting resin may be set in the fiber supply unit 2.

In the above-described embodiment, the fiber supply unit 2 used for winding by the first fiber processing unit 3A and the fiber supply unit 2 used for wrapping by the second fiber processing unit 3B are the same, but different from each other. The fiber supply unit 2 may be used. In this case, after the long fiber bundle w1 is transferred from the first fiber processing unit 3A to the second fiber processing unit 3B, an operation of changing the fiber supply unit 2 occurs.

In the said Example, the 1st 2nd fiber process part 3B and the fiber supply part 2 were arrange | positioned with respect to the 1st fiber process part 3A, respectively. Instead, a plurality of second fiber processing units 3B and a fiber supply unit 2 are provided for one first fiber processing unit 3A, and the first fiber processing unit 3A completes one winding. When the long fiber bundle w1 is delivered to the second fiber processing unit 3B, a new winding is immediately performed, and during that time, the long fiber bundle w1 received by the second fiber processing unit 3B is lapped in parallel. Also good.

In the embodiment of FIG. 6, the motor 11 is a double-axis motor 11 ′, and the long frame bundle w1 is wound up by rotating a square frame mold on the opposite shaft, and the main bars of the reinforced concrete beam are spaced at regular intervals. It was also possible to create a fiber reinforced plastic that would be a horizontal stirrup (star wrap).
In the example of FIG. 6, the back surfaces of the two fiber reinforced plastic manufacturing apparatuses 100 face each other, and a square frame-shaped die 30 is attached to each of the both-axis motors 11 ′.

  As shown in FIG. 7, the mold 30 has rotating beams 31 and 32 orthogonal to each other. At both ends of the rotating beams 31 and 32, pin members 33 for hooking the long fiber bundle w1 are provided. The fiber supply unit 35 can draw out the long fiber bundle w1 from two places. The drawn long fiber bundles w <b> 1 are each wound up by the mold 30. The wound long fiber bundle w1 is removed from the motor 11 'together with the mold 30, and the resin impregnated in the long fiber bundle w1 is thermally cured in a heating furnace. Thereby, the square fiber-reinforced plastic 36 is produced.

According to the present embodiment, a rod-like fiber reinforced plastic can be produced using the shaft on one side of the motor 11, and a square fiber reinforced plastic can be produced using the other shaft.
The rod-like fiber reinforced plastic can be used as the main reinforcement of reinforced concrete, and the square fiber reinforced plastic can be used as the transverse reinforcement.

DESCRIPTION OF SYMBOLS 1a 1st support part 1b 2nd support part 1c 3rd support part 2 Fiber supply part 3A 1st fiber treatment part 3B 2nd fiber treatment part 4 Shaft 5 Winding type 6a 1st pin member 6b 1st pin member 6c 1st Pin member 6d First pin member 7a Second pin member 7b Second pin member 22a First rotating beam 22b Second rotating beam b1 Floor surface w1 Long fiber bundle

Claims (5)

A long fiber bundle is drawn out in an annular manner while being pulled out to at least four first pin members that are mounted on a winding mold that rotates around an axis and moves between a position at a different angle and a position on a line from the rotation center. 1 process,
After inserting a pair of second pin members on the inner circumference side of the long fiber bundle wound in an annular shape in the first step, the pair of second pin members are moved in a line on the diameter. A second step of flattening the long-fiber bundle wound in an annular shape by separating the two-pin members from each other on the one line and transferring them to a pair of second-pin members;
Since the pair of second pin members are rotated in the same direction and the flattened long fiber bundle is not rotated around the length direction, the third step of supplying and winding the long fiber bundle around the outer periphery is performed. A method for producing a fiber-reinforced plastic, characterized in that it is carried out.
In Claim 1, if the range which the long fiber bundle wound up by these 1st pin members is contacting is totaled, it will become one cylindrical surface, and also the length transferred to said pair of 2nd pin members A method for producing a fiber-reinforced plastic, characterized in that a total of the ranges in which the fiber bundles are in contact is another cylindrical surface.
At least four first pin members that move between a position at a different angle from the rotation center and a position on a line are mounted, and resin is attached to the first pin member at a position at a different angle from the rotation center. A winding type for winding a long fiber bundle;
A pair of second pin members facing each other and rotatably disposed around the opposing line;
A guide track for moving the second pin member close and away;
A guide track for guiding the second pin members adjacent to each other between the first pin members;
In the process of separating the pair of second pin members, the long fibers wound around the first pin member moving the first pin member from a position at a different angle from the rotation center to the position on the line. An urging mechanism for applying tension to the bundle;
A fiber supply unit that supplies the front long fiber bundle to the outer periphery of the long fiber bundle when the second pin members separated from each other in a state of receiving the long fiber bundle rotate around the opposing line. Characteristic fiber reinforced plastic manufacturing equipment.
In Claim 3, when the range which the long fiber bundle wound up by these 1st pin members is contacting is totaled, it will become one cylindrical surface, and also the length transferred to said pair of 2nd pin members An apparatus for producing fiber-reinforced plastic, characterized in that the total contact area of fiber bundles is another cylindrical surface.
5. The winding type according to claim 4, wherein the winding mold has first and second rotating beams, the plurality of first pin members are attached to the rotating beam, and the first and second rotating beams are The apparatus for producing a fiber-reinforced plastic, wherein the plurality of first pin members are positioned on a line when the line is aligned with a rotation center.