JP2015182080A - Molding machine for frp and molding method of frp sheet using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a molding machine for FRP which can stably mold an FRP sheet and is excellent in productivity of a molded article and to provide a molding method of the FRP sheet using the molding machine for FRP.SOLUTION: A molding machine 100 for FRP includes pinching mechanisms 10, 20 comprising lower energizing means 10A, 20A and upper energizing means 10B, 20B which move vertically; and a conveyance device 3 for conveying an FRP sheet 1 made of resin to which reinforcing fibers are added. The molding machine 100 for FRP molds the FRP sheet 1 while holding the FRP sheet 1 between the lower energizing means 10A, 20A and the upper energizing means 10B, 20B. The lower energizing means 10A, 20A are moved vertically by crank mechanisms 11, 21 and the upper energizing means 10B, 20B are moved vertically by hydraulic pumps 13, 23.

Description

  The present invention relates to an FRP molding machine and a method for molding an FRP sheet using the same, and more specifically, an FRP molding machine capable of stably molding an FRP sheet and excellent in the productivity of a molded product. The present invention relates to a method for forming the used FRP sheet.

  Fiber reinforced plastic (FRP) is a composite material in which so-called reinforcing fibers are added to a resin to improve the strength. FRP is used in all fields because it is lightweight and has excellent strength.

2. Description of the Related Art Conventionally, a method has been used in which a reinforcing fiber to which a thermosetting resin is applied is formed into a predetermined shape using a hydraulic press that can easily control the applied pressure.
For example, a hydraulic press having a fixed mold, a movable mold, a hydraulic pump that moves and pressurizes the movable mold, and a hydraulic circuit that supplies and controls pressurizing hydraulic oil in the hydraulic pump is known. (For example, refer to Patent Document 1). According to such a hydraulic press, it is possible to control the pressurization speed in the low-speed pressurization region of the movable mold so that the set speed is achieved regardless of the amount of oil leak and the load on the hydraulic pump side.

JP-A-5-104300

However, the conventional hydraulic press including the hydraulic press described in Patent Document 1 has a drawback in that productivity is poor because the mold opens and closes slowly. If a conventional hydraulic press is used to open and close the mold at high speed, a large amount of oil (hydraulic oil) needs to flow into and out of the cylinder in a short time, so a large hydraulic mechanism and accumulator Is required.
In addition, when molding a composite material (hereinafter referred to as “FRP sheet”) in which strength is improved by applying a resin to a so-called reinforcing fiber, it takes time until it is pressed. Radiates heat, and good molding conditions cannot be maintained.
Furthermore, in a hydraulic press, since the working oil is a viscous fluid, the viscosity is likely to change significantly depending on the air temperature and the operating temperature. For this reason, it is difficult to stabilize the operation speed of the hydraulic press using a large amount of hydraulic oil.

  The present invention has been made in view of the above circumstances, and is a compact FRP sheet molding machine capable of stably forming an FRP sheet and excellent in the productivity of a molded product, and an FRP sheet molding method using the same. The purpose is to provide.

  The present inventor has intensively studied to solve the above-mentioned problem. Of the narrow pressure mechanism composed of the lower urging means and the upper urging means that move up and down, the lower urging means is moved up and down by the crank mechanism. The present inventors have found that the above problem can be solved unexpectedly by moving the upper urging means up and down by a hydraulic pump, and have completed the present invention.

  The present invention includes: (1) a narrow pressure mechanism including a lower urging means and an upper urging means that move up and down relative to each other; FRP molding machine for sandwiching and forming an FRP sheet, wherein the lower urging means is moved up and down by a crank mechanism, and the upper urging means is moved up and down by a hydraulic pump In the machine.

  This invention exists in the molding machine for FRP of the said (1) description provided with two or more (2) narrow pressure mechanisms.

  According to the present invention, (3) a first temperature adjusting plate is attached to the lower end of the lower biasing mechanism of the upstream narrow pressure mechanism and the upper end of the upper biasing mechanism, and the lower biasing mechanism of the downstream narrow pressure mechanism. In the FRP molding machine according to the above (2), the second temperature adjusting plate is attached to the lower end of the upper urging means and the upper end of the upper urging means.

  The present invention resides in the FRP molding machine according to the above (3), wherein (4) the first temperature adjustment plate is a heating plate and the second temperature adjustment plate is a cooling plate.

  This invention exists in the molding machine for FRP as described in any one of said (1)-(4) further provided with the conveying apparatus which conveys (5) FRP sheet | seat.

  This invention exists in the molding machine for FRP as described in any one of said (1)-(5) further provided with the preheating apparatus which heats a (6) FRP sheet | seat beforehand.

  The present invention resides in the FRP molding machine according to any one of (1) to (6), wherein the crank mechanism is driven by a servo motor.

  The present invention resides in the FRP molding machine according to any one of the above (1) to (7), wherein the hydraulic pump is driven by a servo motor.

  This invention exists in the molding machine for FRP as described in any one of said (1)-(8) whose reinforcement fiber is carbon fiber and resin is a thermoplastic resin.

  The present invention is (10) a FRP sheet molding method using the FRP molding machine described in (4) above, wherein the FRP sheet is molded while being heated by an upstream narrow pressure mechanism, A cooling molding step in which the FRP sheet molded while heating is cooled by a downstream narrow pressure mechanism, and the lower biasing means of the upstream narrow pressure mechanism is lowered in the heating molding step. Thereafter, by raising the upper biasing means, the FRP sheet is formed, and in the cooling molding step, after lowering the lower biasing means of the downstream narrow pressure mechanism, by raising the upper biasing means, It exists in the shaping | molding method of the FRP sheet which shape | molds an FRP sheet.

  The present invention is (11) a method for forming an FRP sheet using the FRP molding machine described in (6) above, wherein the FRP sheet is heated with a preheating device, and the heated FRP sheet is A cooling molding step of molding while cooling with the downstream narrow pressure mechanism, and in the cooling molding step, the lower biasing means of the downstream narrow pressure mechanism is lowered and then the upper biasing means is raised. Thus, the present invention resides in a method for forming an FRP sheet for forming an FRP sheet.

In the FRP molding machine of the present invention, the lower biasing means on one side of the narrow pressure mechanism composed of the lower biasing means and the upper biasing means that move up and down relative to each other is moved up and down by the crank mechanism, The lower urging means can be moved at high speed.
Accordingly, the processing time of the FRP sheet is shortened by setting the high-speed moving distance of the downward urging means to be relatively large, and accordingly, the speed at which the FRP sheet is continuously conveyed can be set at a higher speed than before. it can. As a result, productivity is improved. At this time, if the crank mechanism is driven by a servo motor, high-speed opening and closing of the mold can be realized with less power and high-precision control.

Also, when molding an FRP sheet, the time to pressurize can be shortened by quickly moving the lower urging means up and down by the crank mechanism, so that the heat radiation of the heated resin can be prevented. it can. As a result, the FRP sheet can be reliably molded.
Furthermore, since a hydraulic pump is not used as the downward biasing means, a large hydraulic mechanism and a pressure accumulating device are unnecessary, and the device can be made compact.
Furthermore, since the amount of hydraulic oil can be extremely reduced, it is possible to reduce the effect of changes in the viscosity of hydraulic oil based on the temperature and operating temperature, and maintenance management such as oil leakage and oil replacement is easy. Become.

In the FRP molding machine of the present invention, it is easy to control the pressure by moving the upper biasing means on the other side up and down by a hydraulic pump.
At this time, since the processing time of the FRP sheet is shortened by setting the moving distance of the upper urging means to be relatively small, the productivity is improved.
Further, by driving the hydraulic pump with a servo motor, the operating speed and pressure of the upper urging means can be easily controlled to arbitrary values, and stable molding becomes possible.

  Therefore, according to the FRP molding machine of the present invention, the FRP sheet can be stably molded while being compact, and the productivity of the molded product is excellent.

In the FRP molding machine of the present invention, since a plurality of narrow pressure mechanisms are provided, the FRP sheet molded by the upstream narrow pressure mechanism can be molded again by the downstream narrow pressure mechanism.
At this time, a first temperature adjusting plate is attached to the lower end of the lower biasing mechanism and the upper end of the upper biasing mechanism of the upstream narrow pressure mechanism, and the lower end and upper position of the lower biasing mechanism of the downstream narrow pressure mechanism. Since the second temperature adjusting plate is attached to the upper end of the urging means, it can be molded while adjusting the temperature of the FRP sheet.
For example, when the first temperature adjustment plate is a heating plate, the mold can be heated by the first temperature adjustment plate. Thereby, since the FRP sheet can be formed with a sufficiently heated mold, the shape of the FRP sheet can be greatly deformed.
When the second temperature adjustment plate is a cooling plate, the mold can be cooled by the second temperature adjustment plate. Thereby, since the FRP sheet formed by heating can be re-molded with a sufficiently cooled mold, the shape of the FRP sheet is finely adjusted, and at the same time, a molded product cured in that shape can be obtained. .
Therefore, the FRP sheet can be formed with high accuracy.

  Since the FRP molding machine of the present invention further includes a conveying device that conveys the FRP sheet, it is possible to process a continuous FRP sheet.

In the FRP molding machine of the present invention, when a preheating device for heating the FRP sheet is further provided, the FRP sheet that has been softened in advance can be molded by a narrow pressure mechanism.
Moreover, since the 2nd temperature control board which consists of a cooling plate is attached to the narrow pressure mechanism, a metal mold | die can be cooled with this 2nd temperature control board. As a result, the heated FRP sheet can be molded while being cooled by a sufficiently cooled mold, so that the FRP sheet can be molded and cured in a desired shape.

In the FRP molding machine of the present invention, when the FRP sheet is composed of carbon fibers and a thermoplastic resin imparted to the carbon fibers, multi-step molding can be performed and the productivity is excellent. For this reason, it can be used for an automobile body member having an inexpensive and complicated shape. As a result, the safety and fuel consumption of the car are improved. Also, reworking is possible.
Further, even after molding, there is an advantage that rework can be performed by heating the molded product, and it can be easily recycled.

  In the FRP sheet molding method of the present invention, after using the above-mentioned FRP molding machine, the lower biasing means of the upstream narrow pressure mechanism is lowered at high speed by the crank mechanism in the heating molding step and the cooling molding step. By raising the upper biasing means with the hydraulic pump and molding the FRP sheet, the productivity of the molded FRP sheet is improved and the FRP sheet can be stably molded.

  In the FRP sheet molding method of the present invention, after the FRP sheet is heated by the preheating device, in the cooling molding step, the lower biasing means of the upstream narrow pressure mechanism is lowered at a high speed by the crank mechanism, By forming the FRP sheet by raising the upper biasing means with a hydraulic pump, the productivity of the molded FRP sheet is improved and the FRP sheet can be stably formed.

FIG. 1 is a front view schematically showing the FRP molding machine according to the present embodiment. FIG. 2 is a schematic diagram for explaining the driving of the crank mechanism of the FRP molding machine according to the present embodiment. FIG. 3 is a top view schematically showing the conveying device of the FRP molding machine according to the present embodiment. FIG. 4 is a flowchart showing the FRP sheet forming method according to the first embodiment. FIG. 5A is an explanatory diagram for explaining a processing method of the FRP sheet by the upper urging means and the lower urging means in the FRP sheet forming method according to the first embodiment. FIG. 5B is an explanatory diagram for explaining a processing method of the FRP sheet by the upper urging means and the lower urging means in the FRP sheet forming method according to the first embodiment. FIG.5 (c) is explanatory drawing for demonstrating the processing method of the FRP sheet by an upper biasing means and a lower biasing means in the shaping | molding method of the FRP sheet which concerns on 1st Embodiment. FIG. 6 is a flowchart showing a method for forming an FRP sheet according to the second embodiment.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings as necessary. In the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted. Further, the positional relationship such as up, down, left and right is based on the positional relationship shown in the drawings unless otherwise specified. Further, the dimensional ratios in the drawings are not limited to the illustrated ratios.

The molding machine for FRP according to the present invention is an apparatus for sandwiching and molding an FRP sheet made of a resin provided with reinforcing fibers between a lower biasing means and an upper biasing means described later.
Examples of the FRP sheet include known glass fiber reinforced plastic, long glass fiber reinforced plastic, carbon fiber reinforced plastic, boron fiber reinforced plastic, aramid fiber reinforced plastic, polyethylene fiber reinforced plastic, Zylon reinforced plastic, liquid crystal polymer, and the like. Is used as appropriate.
Among these, from the viewpoints of versatility and strength, it is preferable that the FRP sheet uses carbon fiber as the reinforcing fiber and a thermoplastic resin such as methyl methacrylate as the resin. In this case, even after molding, reworking is possible by heating, and it can be easily recycled.

FIG. 1 is a front view schematically showing the FRP molding machine according to the present embodiment.
As shown in FIG. 1, the FRP molding machine 100 includes an upstream narrow pressure mechanism 10 composed of a lower urging means 10A and an upper urging means 10B that move up and down, a lower urging means 20A and an upper urging mechanism that move up and down. A downstream narrow pressure mechanism 20 composed of a biasing means 20B, a transport device (not shown) for transporting the FRP sheet 1 made of a resin provided with reinforcing fibers, a preheating device 4 for preheating the FRP sheet, Is provided.
Since the FRP molding machine 100 includes a plurality of narrow pressure mechanisms 10, 20, the FRP sheet 1 molded by the upstream narrow pressure mechanism 10 can be molded again by the downstream narrow pressure mechanism 20. it can.

In the FRP molding machine 100, a first temperature adjustment plate X made of a heating plate is attached to the lower end of the lower urging means 10A and the upper end of the upper urging means 10B of the narrow pressure mechanism 10 on the upstream side. Therefore, the FRP sheet 1 conveyed to the upstream narrow pressure mechanism 10 is interposed between the lower urging means 10A and the upper urging means 10B via the mold K1 heated by the first temperature adjustment plate X. It will be sandwiched and molded.
At this time, in the narrow pressure mechanism 10 on the upstream side, the FRP sheet 1 is sufficiently heated and softened, so that the shape can be greatly changed.

  Here, the temperature of the first temperature adjustment plate X is preferably in the vicinity of the softening point of the resin, for example, preferably 50 to 500 ° C.

On the other hand, a second temperature adjustment plate Y made of a cooling plate is attached to the lower end of the lower urging means 20A and the upper end of the upper urging means 20B of the narrow pressure mechanism 20 on the downstream side. For this reason, the FRP sheet 1 conveyed to the downstream narrow pressure mechanism 20 is interposed between the lower urging means 20A and the upper urging means 20B via the mold K2 cooled by the second temperature adjusting plate Y. It will be sandwiched and molded.
At this time, in the narrow pressure mechanism 20 on the downstream side, the heat-formed FRP sheet 1 is re-formed through the mold K2 cooled by the second temperature adjusting plate Y, so that the shape can be finely adjusted. At the same time, it can be cured in that shape.

  Here, the temperature of the 2nd temperature adjustment board Y should just be below the temperature of the 1st temperature adjustment board X mentioned above.

In the FRP molding machine 100, the crank mechanism 11 is connected to the lower biasing means 10 </ b> A of the upstream narrow pressure mechanism 10, and the upstream narrow pressure mechanism 10 is based on the rotation of the crank mechanism 11. The lower urging means 10A moves up and down.
Similarly, a crank mechanism 21 is connected to the lower biasing means 20 </ b> A of the downstream narrow pressure mechanism 20, and the lower biasing mechanism 20 on the downstream side is biased based on the rotation of the crank mechanism 21. The means 20A moves up and down.
Both crank mechanisms 11 and 21 are driven synchronously.

In the FRP molding machine 100 according to the present embodiment, the lower urging means 10A, 20A of the narrow pressure mechanisms 10, 20 are moved up and down by the crank mechanisms 11, 21, so that the lower urging means 10A, 20A are moved at high speed. It is possible to move up and down.
Therefore, in the FRP molding machine 100, the downward urging means moves at a high speed, so that the processing time of the FRP sheet is shortened. As a result, the timing for repeating the loading of the FRP sheet before processing and the unloading of the FRP sheet after processing can be set much faster than before, which improves productivity.

FIG. 2 is a schematic diagram for explaining the driving of the crank mechanism of the FRP molding machine according to the present embodiment.
As shown in FIG. 2, the crank mechanisms 11 and 21 are driven to draw a circle.
The crank mechanisms 11 and 21 are preferably controlled so as to be positioned near the bottom dead center when the pressure is narrow. In this case, the crank mechanisms 11 and 21 can exhibit a sufficient holding force against the upward biasing force by the upward biasing means.
Here, the vicinity of the bottom dead center means a range in which the crank angle θ is 0 to ± 30 degrees when the crank angle at the bottom dead center is set to 0 degrees.

Returning to FIG. 1, a servo motor 12 is attached to the crank mechanism 11, and the crank mechanism 11 is driven by the servo motor 12.
Similarly, a servo motor 22 is attached to the crank mechanism 21, and the crank mechanism 21 is driven by the servo motor 22.
Therefore, in the FRP molding machine 100, high-speed opening and closing of the mold can be realized with less power and high-precision control. The servo motors 12 and 22 are respectively provided with corresponding speed reducers 12a and 22a.

  In the FRP molding machine 100 according to the present embodiment, since the crank mechanisms 11 and 21 are used, the lower urging means 10A and 20A can be moved quickly and at high speed. It is difficult to move the upper biasing means 10B and 20B at high speed using the hydraulic pumps 13 and 23. Incidentally, in order to move the lower urging means 10A, 20A at high speed using the hydraulic pumps 13, 23, it is necessary to make the hydraulic pump extremely large.

In the FRP molding machine 100, a hydraulic pump 13 is attached to the upper biasing means 10B of the upstream narrow pressure mechanism 10, and the upper biasing means of the upstream narrow pressure mechanism 10 is attached by the hydraulic pump 13. 10B moves up and down.
Similarly, a hydraulic pump 23 is attached to the upper biasing means 20B of the downstream narrow pressure mechanism 20, and the hydraulic pump 23 moves the upper biasing means 20B of the downstream narrow pressure mechanism 20 up and down. It is supposed to be.
The movement of the upper biasing means 10B, 20B is controlled by the stroke sensor ST.

  In the FRP molding machine 100 according to the present embodiment, the upward biasing means 10B and 20B are moved up and down by the hydraulic pumps 13 and 23, whereby the applied pressure can be easily controlled. In addition, it is difficult to control the pressurizing force of the lower urging means 10A and 20A using the crank mechanisms 11 and 21.

  In the FRP molding machine 100 according to the present embodiment, when the FRP sheet is molded, the hydraulic pump 13 is difficult to move at high speed by increasing the ascending / descending distance of the lower urging means 10A and 20A by the high speed crank mechanisms 11 and 21. , 23 by reducing the ascending / descending distance of the upper biasing means 10B, 20B, the time until the FRP sheet is pressed by the lower biasing means 10A, 20A and the upper biasing means 10B, 20B is shortened. Can do. Thereby, heat dissipation of the resin of the heated FRP sheet 1 can be prevented, and the FRP sheet 1 can be sufficiently formed.

In addition, by using the hydraulic pumps 13 and 23 to move the upper biasing means 10B and 20B up and down while controlling the applied pressure, it is possible to form the FRP sheet stably with high accuracy.
Further, since high-speed operation by a hydraulic mechanism is unnecessary, the hydraulic pumps 13 and 23 can be reduced in size, so that the apparatus can be made compact and less hydraulic oil is used.
Furthermore, the influence by the change in the viscosity of the hydraulic oil based on the air temperature and the operating temperature can be reduced.

A servo motor 14 is attached to the hydraulic pump 13, and the hydraulic pump 13 is driven by the servo motor 14.
Similarly, a servo motor 24 is attached to the hydraulic pump 23, and the hydraulic pump 23 is driven by the servo motor 24.
Therefore, in the FRP molding machine 100, the operation speed and pressure of the upper urging means by the hydraulic pump 13 can be directly feedback-controlled to arbitrary values, so that stable molding is possible.

FIG. 3 is a top view schematically showing the conveying device of the FRP molding machine according to the present embodiment.
As shown in FIG. 3, in the FRP molding machine 100, the conveying device 3 is provided on both sides of the FRP molding machine 100 (left and right with respect to the traveling direction of the FRP sheet). Thereby, since the FRP sheet can be gripped from both sides, it can be reliably conveyed.
The transport device 3 is not particularly limited, and for example, a known robot is used.

  Returning to FIG. 1, the FRP molding machine 100 is provided with a preheating device 4 for preheating the FRP sheet. Thereby, it is also possible to preheat the FRP sheet with the preheating device 4 and form the FRP sheet 1 in a state where the resin is softened by the narrow pressure mechanism.

  Here, the temperature of the preheating device 4 is preferably in the vicinity of the softening point of the resin, for example, preferably 50 to 500 ° C.

  In the FRP molding machine 100 according to the present embodiment, the molded product obtained by molding the FRP sheet 1 is suitably used particularly for applications such as structural members that require light weight and high strength of transportation equipment such as automobiles and aircraft. It is done.

Next, a first embodiment of an FRP sheet forming method using the above-described FRP molding machine 100 will be described.
FIG. 4 is a flowchart showing the FRP sheet forming method according to the first embodiment.
As shown in FIG. 4, in the FRP sheet forming method according to the first embodiment, the FRP sheet 1 is formed while being heated by the narrow pressure mechanism 10 on the upstream side, and is formed while being heated. A cooling molding step S2 for molding the FRP sheet 1 while being cooled by the narrow pressure mechanism 20 on the downstream side.

  In the FRP sheet forming method according to the first embodiment, first, the heated FRP sheet 1 is conveyed to the position of the narrow pressure mechanism 10 on the upstream side, and the mold K1 on the upper biasing means 10B is used. Place on top. In addition, when the FRP sheet 1 is not heated, it is also possible to heat the FRP sheet 1 with the metal mold K1 heated by the first temperature adjustment plate X.

In the heat forming step S1, the heated FRP sheet is formed by narrowing the FRP sheet 1 by the upstream lower biasing means 10A and the upper biasing means 10B.
FIGS. 5A to 5C are explanatory diagrams for explaining a processing method of the FRP sheet by the upper urging means and the lower urging means in the FRP sheet forming method according to the first embodiment. . Note that description of the FRP sheet is omitted.
As shown in FIG. 5A, in the thermoforming step S1, first, the lower biasing means 10A of the narrow pressure mechanism 10 on the upstream side is lowered at a high speed. At this time, the mold K1 attached to the lower urging means 10A via the first temperature adjustment plate X is brought as close as possible so as not to contact the heated FRP sheet 1.
Next, the lower urging means 10A is stopped, and the upper urging means 10B is raised as shown in FIG.
And as shown in FIG.5 (c), the FRP sheet 1 is shape | molded by pinching the FRP sheet 1 between the downward biasing means 10A and the upper biasing means 10B.
At this time, since the first temperature adjusting plate X is attached to the end portions of the lower urging means 10A and the upper urging means 10B, the FRP sheet is a mold K1 heated by the first temperature adjusting plate X. Molded while being heated.

  After the upper urging means 10B is lowered and the lower urging means 10A is raised, the conveying device conveys the FRP sheet 1 formed in the heat forming step S1 to the position of the narrow pressure mechanism 20 on the downstream side. Place on the mold K2 on the biasing means 20B.

In the cooling molding step S2, the molded FRP sheet is narrowed by the downstream lower biasing means 20A and the upper biasing means 20B, and the FRP sheet 1 is molded. In addition, since the method of narrow-pressure shaping | molding is the same as that of the heat shaping | molding step S1 mentioned above, description is abbreviate | omitted (refer Fig.5 (a)-FIG.5 (c)).
At this time, since the second temperature adjustment plate Y is attached to the end portions of the lower urging means 20A and the upper urging means 20B, the FRP sheet is a mold K2 cooled by the second temperature adjustment plate Y. Molded while being cooled.

Then, after the upper urging means 20B is lowered and the lower urging means 20A is raised, the molded product molded in the cooling molding step S2 is taken out by the conveying device.
According to the molding method of the FRP sheet according to the first embodiment, the productivity of the molded product that is the molded FRP sheet 1 is improved, and the FRP sheet can be stably molded.

Next, a second embodiment of the FRP sheet forming method using the above-described FRP molding machine 100 will be described.
FIG. 6 is a flowchart showing a method for forming an FRP sheet according to the second embodiment.
As shown in FIG. 6, in the FRP sheet forming method according to the second embodiment, the heating step S3 of heating the FRP sheet 1 with the preheating device 4 and the heated FRP sheet 1 are narrowed on the downstream side. A cooling molding step S <b> 2 for molding while cooling with the pressure mechanism 20.

In the heating step S3, first, the FRP sheet 1 is put into the preheating device 4 and sufficiently heated.
Then, the heated FRP sheet 1 is transported to the position of the narrow pressure mechanism 20 on the downstream side, and is placed on the mold K2 on the upper biasing means 20B.

In the cooling molding step S2, the FRP sheet is narrowed by the downstream lower biasing means 20A and the upper biasing means 20B, and the FRP sheet 1 is molded. In addition, since the method of narrow-pressure shaping | molding is the same as that of the heat shaping | molding step S1 mentioned above, description is abbreviate | omitted (refer Fig.5 (a)-FIG.5 (c)).
At this time, since the second temperature adjustment plate Y is attached to the end portions of the lower urging means 20A and the upper urging means 20B, the FRP sheet is a mold K2 cooled by the second temperature adjustment plate Y. Molded while being cooled.

Then, after the upper urging means 20B is lowered and the lower urging means 20A is raised, the molded product molded in the cooling molding step S2 is taken out by the conveying device.
According to the method for molding an FRP sheet according to the second embodiment, the productivity of a molded product that is the molded FRP sheet 1 is improved, and the FRP sheet can be stably molded.

  As described above, in the FRP sheet forming method, by using the FRP molding machine 100 according to the present embodiment, for example, as described in the first embodiment and the second embodiment, FRP can be performed in a plurality of ways. A sheet can be formed.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment.

  For example, in the FRP molding machine 100 according to the present embodiment, the two narrow pressure mechanisms 10 and 20 are provided, but may be one or three or more.

In the FRP molding machine 100 according to the present embodiment, the first temperature adjustment plate X is attached to the lower end of the lower biasing means 10A and the upper end of the upper biasing means 10B of the upstream narrow pressure mechanism 10, and the downstream side Although the 2nd temperature control board Y is attached to the lower end of 20 A of lower biasing mechanisms of the narrow pressure mechanism 20, and the upper end of the upper biasing means 20B, it is not necessarily essential.
For example, instead of the first temperature adjustment plate X and the second temperature adjustment plate Y, a heater may be attached.
Further, instead of the first temperature adjustment plate X and the second temperature adjustment plate Y, a mold having a heating or cooling function (mold with temperature control function) may be used.

In the FRP molding machine 100 according to the present embodiment, a heating plate is used as the first temperature adjustment plate X and a cooling plate is used as the second temperature adjustment plate Y. However, the first temperature adjustment plate X is a cooling plate. Yes, the second temperature adjustment plate Y may be a heating plate.
Further, both the first temperature adjustment plate X and the second temperature adjustment plate Y may be heating plates or cooling plates.

  In the FRP molding machine 100 according to the present embodiment, the crank mechanisms 11 and 21 are driven synchronously, but may be independent of each other.

In the FRP molding machine 100 according to the present embodiment, the conveying device 3 is provided on both sides of the FRP molding machine 100, but the position to be provided is not particularly limited.
Moreover, the conveying apparatus 3 may be provided independently separately from the FRP molding machine 100, or may be provided integrally.
Furthermore, the transfer device 3 is not limited to a robot, and may be a conveyor, a cylinder mechanism, or the like.

  The FRP molding machine 100 according to the present invention is used as an apparatus that molds an FRP sheet, which is a resin provided with reinforcing fibers, into a predetermined shape. According to the FRP molding machine 100 according to the present invention, the FRP sheet can be stably molded, and the productivity of the molded product is excellent.

DESCRIPTION OF SYMBOLS 1 ... FRP sheet | seat 10,20 ... Narrow pressure mechanism 10A, 20A ... Downward biasing means 10B, 20B ... Upward biasing means 3 ... Conveyance apparatus 4 ... Preheating apparatus 11, 21 ... Crank mechanism 12,22 ... Servo motor 12a, 22a ... Decelerator 13,23 ... Hydraulic pump 100 ... FRP molding machine K1, K2 ... Mold S1 ... Heat forming step S2 ... Cooling step S3 ... Heating step X ... First temperature adjusting plate Y ... Second temperature adjusting plate ST ... Stroke sensor

Claims (11)

A narrow pressure mechanism comprising a lower biasing means and an upper biasing means that move up and down relative to each other,
A molding machine for FRP that molds by sandwiching an FRP sheet made of a resin provided with reinforcing fibers between the lower biasing means and the upper biasing means,
The lower urging means is moved up and down by a crank mechanism;
An FRP molding machine in which the upper biasing means is moved up and down by a hydraulic pump.   The FRP molding machine according to claim 1, comprising a plurality of the narrow pressure mechanisms. A first temperature adjustment plate is attached to the lower end of the lower biasing means and the upper end of the upper biasing means of the narrow pressure mechanism on the upstream side,
3. The FRP molding machine according to claim 2, wherein a second temperature adjusting plate is attached to a lower end of the lower biasing unit and an upper end of the upper biasing unit of the narrow pressure mechanism on the downstream side. The first temperature adjusting plate is a heating plate;
The FRP molding machine according to claim 3, wherein the second temperature adjusting plate is a cooling plate.   The molding machine for FRP of any one of Claims 1-4 further provided with the conveying apparatus which conveys the said FRP sheet | seat.   The molding machine for FRP according to any one of claims 1 to 5, further comprising a preheating device that preheats the FRP sheet.   The FRP molding machine according to any one of claims 1 to 6, wherein the crank mechanism is driven by a servo motor.   The FRP molding machine according to claim 1, wherein the hydraulic pump is driven by a servo motor.   The FRP molding machine according to any one of claims 1 to 8, wherein the reinforcing fiber is a carbon fiber, and the resin is a thermoplastic resin. A method for forming an FRP sheet using the FRP molding machine according to claim 4,
A thermoforming step of forming the FRP sheet while heating with the narrow pressure mechanism on the upstream side;
A cooling molding step of molding the FRP sheet molded while heating, while cooling with the narrow pressure mechanism on the downstream side;
With
In the heat forming step, after lowering the lower urging means of the narrow pressure mechanism on the upstream side, the FRP sheet is formed by raising the upper urging means,
In the cooling forming step, the FRP sheet is formed by lowering the lower urging means of the narrow pressure mechanism on the downstream side and then raising the upper urging means. A method for molding an FRP sheet using the FRP molding machine according to claim 6,
A heating step of heating the FRP sheet with the preheating device;
A cooling molding step of molding the heated FRP sheet while cooling with the narrow pressure mechanism on the downstream side;
With
In the cooling forming step, the FRP sheet is formed by lowering the lower urging means of the narrow pressure mechanism on the downstream side and then raising the upper urging means.

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