JP2010017964A - Filament winding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filament winding apparatus simply obtaining an equipment configuration for spraying resin by a compressed gas in a hoop winding device, and the manufacturing cost of which can be reduced. <P>SOLUTION: This filament winding apparatus 1 includes a hoop winding device 40. The hoop winding device 40 includes a winding and hanging table 41 rotating around a mandrel 1a, and a second resin-impregnation device 44 rotating together with the hanging table 41 for spraying resin toward a second fiber bundle 42a by high pressure air and impregnating the resin therein. The second resin-impregnation device 44 includes an air-storage tank 44e for storing high pressure air which rotates together with the winding and hanging table 41. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a filament winding apparatus provided with a hoop winding device.

  A hoop winding device and a helical winding device are provided, and the reinforcing layer is formed by winding the fiber bundle around the mandrel by alternately repeating the hoop winding by the hoop winding device and the helical winding by the helical winding device on the mandrel. Filament winding devices are known.

When hoop winding is performed by the hoop winding device, a technique is known in which a winding table is rotated around a mandrel, and the fiber bundle is impregnated with resin just before the fiber bundle is wound around the mandrel (for example, patent Reference 1), as a method of impregnating a fiber bundle with resin, there is a method in which resin is injected into a fiber bundle using high-pressure air (compressed gas). In order to carry out this method on the winding table, it is necessary to supply high-pressure air to the winding table, and since the winding table is rotating when the hoop winding is performed, a method of supplying high-pressure air For example, a rotary joint is used.
However, when a rotary joint is used, there is a problem that the device configuration for injecting resin with high-pressure air becomes complicated and the manufacturing cost of the device is high.
JP 2007-260974 A

  In view of the above situation, the present invention provides a filament winding apparatus that can simplify the apparatus configuration for injecting resin with compressed gas in a hoop winding apparatus and can reduce the manufacturing cost of the apparatus. .

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

  The filament winding device according to claim 1 includes a hoop winding device, and the hoop winding device rotates together with a winding table that rotates around a mandrel and the winding table toward the fiber bundle by compressed gas. A resin impregnation device that injects and impregnates resin, and the resin impregnation device includes a gas storage tank that rotates together with the winding table and stores the compressed gas.

  The filament winding apparatus according to claim 2 further includes gas supply means for supplying the compressed gas to the gas storage tank.

  4. The filament winding apparatus according to claim 3, wherein the gas supply means is provided separately from the winding table, and can be connected to and separated from the gas storage tank, so that the winding table is stationary. The compressed gas is connected to the gas storage tank and is separated from the gas storage tank when the winding table is rotating.

  In the filament winding apparatus according to claim 4, the gas supply means rotates together with the winding table.

  In the filament winding apparatus according to claim 5, the gas supply means includes a compressor or a gas supply tank.

  According to the filament winding apparatus of the first aspect, since the resin impregnation apparatus rotates together with the gas storage tank, it is not necessary to use a rotary joint to supply compressed gas from the gas storage tank to the resin impregnation apparatus. Therefore, the apparatus configuration for injecting the resin with the compressed gas in the hoop winding apparatus can be simplified, and the manufacturing cost of the apparatus can be reduced.

  According to the filament winding apparatus of the second aspect, since the compressed gas is supplied from the gas supply means to the gas storage tank, it is possible to ensure the amount of compressed gas necessary for injecting the resin.

  According to the filament winding apparatus of the third aspect, when the winding table is stationary, the gas supply means provided separately from the winding table is connected to the gas storage tank to supply the compressed gas. It is not necessary to use a rotary joint to supply the compressed gas from the gas supply means to the gas storage tank. Therefore, the apparatus configuration for injecting the resin with the compressed gas in the hoop winding apparatus can be simplified, and the manufacturing cost of the apparatus can be reduced.

  According to the filament winding apparatus of the fourth aspect, since the gas supply means rotates together with the winding table, the compressed gas is generated by the gas supply means and stored in the gas storage tank when the winding table is stopped. It can be used for resin injection when the winding table is rotating. Therefore, compared to a hoop winding device that uses compressed gas directly from the gas supply means for resin injection without going through the gas storage tank, the amount of compressed gas required for resin injection can be secured even if the gas supply means is downsized, The manufacturing cost of the apparatus can be reduced.

  According to the filament winding apparatus of the fifth aspect, since the compressor or the gas supply tank is used as the gas supply means, the compressed gas can be supplied from the compressor or the gas supply tank to the gas storage tank.

[First embodiment]
Below, the whole structure of the filament winding apparatus 1 which is 1st embodiment of the filament winding apparatus which concerns on this invention is demonstrated.

  As shown in FIG. 1, the filament winding apparatus 1 winds a fiber bundle around a mandrel 1a, and includes a base 10, a mandrel support part 20, a helical winding apparatus 30, and a hoop winding apparatus 40. The mandrel 1a is made of a metal container formed of a high-strength aluminum material or stainless material, or a resin container formed of a polyamide resin or the like. A fiber bundle consists of bundles, such as glass fiber or carbon fiber.

  The base 10 constitutes the main structure of the filament winding apparatus 1, and the base 10 is provided with first rails 11 and 11 for guiding the mandrel 1 a and second rails 12 and 12 for guiding the hoop winding device 40. The first rails 11 and 11 and the second rails 12 and 12 are formed to extend in one direction and the same direction.

  The mandrel support portion 20 supports the mandrel 1a and includes a base 21, support bases 22 and 22, chucks 23 and 23, and shaft portions 24 and 24. The base 21 forms a main structure of the mandrel support 20. The support bases 22 and 22 are integrally attached to the base 21 and are disposed with the mandrel 1a interposed therebetween. The chucks 23 and 23 are provided on the support bases 22 and 22, respectively. One end of each of the shaft portions 24 and 24 is attached to the chucks 23 and 23, and the other end is attached to the mandrel 1a.

  The base 21 is disposed on the first rails 11 and 11, and the mandrel support 20 is slid back and forth on the first rails 11 and 11 by a first driving device (not shown) made of a pneumatic cylinder, a hydraulic cylinder or the like. In addition, the mandrel 1a moves together with the mandrel support 20. One chuck 23 is rotationally driven by a second driving device (not shown) composed of a variable motor or the like, and the rotational driving force generated by the second driving device is transmitted to the mandrel 1a through the chuck 23 and the shaft portion 24, and the mandrel 1a. Rotates.

  As shown in FIG. 1, the helical winding device 30 performs helical winding. Helical winding is to wind a fiber bundle in which a resin is impregnated in the mandrel 1a in a spiral shape along the axial direction of the mandrel 1a. A thermosetting resin (for example, epoxy resin) is used as the resin. The helical winding device 30 includes a fixing member 31 forming a main structure of the helical winding device 30, a guide member (not shown) for guiding the first fiber bundle 32a supplied from the fiber bundle supply unit (not shown) to the mandrel 1a, And a first resin impregnation device (not shown) for injecting and impregnating the first fiber bundle 32a with resin. The fixing member 31 is fixed on the trajectory of the mandrel 1a when the mandrel 1a is moved by the first driving device, and a through-hole through which the mandrel 1a passes when the helical winding is performed is formed in the fixing member 31. .

  When helical winding is performed by the helical winding device 30, first, the first fiber bundle 32a drawn from the fiber bundle supply unit of the helical winding device 30 through the guide member is fixed to the mandrel 1a with an adhesive tape. Next, the first driving device and the second driving device are operated (the helical winding device 30 is operated), and the mandrel 1a is moved along the first rails 11 and 11 while being rotated at a constant speed. Thereby, the first fiber bundle 32a is guided by the guide member and wound around the mandrel 1a. Note that immediately before the first fiber bundle 32a is wound around the mandrel 1a, the first resin impregnation device injects and impregnates the resin toward the first fiber bundle 32a. When the first fiber bundle 32a layer impregnated with resin is formed on the mandrel 1a and helical winding is completed, the first driving device and the second driving device are stopped (the helical winding device 30 is stopped). This stops the rotation and movement of the mandrel 1a.

  As shown in FIGS. 1 and 2, the hoop winding device 40 performs hoop winding. The hoop winding is to wind a fiber bundle in which the mandrel 1a is impregnated with resin substantially perpendicularly to the axial direction of the mandrel 1a. The hoop winding device 40 includes a winding table 41, a bobbin 42, a holder 43, a second resin impregnation device 44, a first guide roller 45, a second guide roller 46, a third guide roller 47, and a third drive device 48. To do.

  As shown in FIG. 2, the winding table 41 is formed in a hollow disk shape, and includes a bobbin 42, a holder 43, a second resin impregnation device 44, a first guide roller 45, a second guide roller 46, and a third guide roller 47. , And the third drive device 48 is supported. The second fiber bundles 42a, 42a, ... are wound around the bobbins 42, 42, .... The holders 43, 43,... Respectively support the bobbins 42, 42,. A plurality of bobbins 42, 42,... And holders 43, 43,... (Four in this embodiment) are provided, and are arranged at equal intervals on the edge of the winding table 41. The second resin impregnation device 44 injects resin into the second fiber bundles 42a, 42a,. The first guide rollers 45 · 45 ··· and the second guide rollers 46 · 46 ··· are used to transfer the second fiber bundles 42a · 42a ··· wound around the bobbins 42 · 42 ··· Guide to impregnation device 44. The third guide rollers 47, 47 guide the second fiber bundles 42a, 42a, ... guided by the second resin impregnation device 44 to the mandrel 1a.

  On one surface of the winding table 41, there are holders 43, 43, first guide rollers 45, 45, second guide rollers 46, 46, and third guide rollers 47, 47. It can be attached to move freely.

  As shown in FIG. 1, the third drive device 48 rotates the winding table 41, and includes a motor 48a, a first gear 48b, a second gear 48c, a cylinder portion 48d, a flange portion 48e, and a frame 48f. It has.

  The motor 48 a is a drive source that rotates the winding table 41. The first gear 48 b and the second gear 48 c transmit the rotational driving force generated by the motor 48 a to the winding table 41. A first gear 48 b is connected to the motor 48 a, a second gear 48 c is connected to the first gear 48 b, and the second gear 48 c is attached to the other board surface of the winding table 41 so as to be integrally rotatable. Thereby, the rotational driving force of the motor 48a is transmitted in the order of the first gear 48b → the second gear 48c → the winding table 41, and consequently the winding table 41 rotates. The cylindrical portion 48d is formed in a hollow cylindrical shape, and a second gear 48c is attached to one end of the cylindrical portion 48d, and a flange portion 48e having a larger diameter than the cylindrical portion 48d is attached to the other end of the cylindrical portion 48d. A through hole is formed in the frame 48f, and the cylindrical portion 48d is rotatably attached to the frame 48f by inserting the cylindrical portion 48d into the through hole. As a result, the winding table 41 is relative to the frame 48f. Rotate to. The frame 48f is disposed on the second rails 12 and 12, and the hoop winding device 40 is slid back and forth on the second rails 12 and 12 by a fourth drive device (not shown) composed of a pneumatic cylinder, a hydraulic cylinder or the like. Move.

  The mandrel 1a is disposed on the trajectory of the winding table 41 when the hoop winding device 40 is moved by the fourth driving device, and the hoop table 41, the second gear 48c, the cylinder portion 48d, and the flange portion 48e have hoops. A hole 41a, which is a through hole through which the mandrel 1a passes when winding is performed, is formed.

  As shown in FIG. 1 and FIG. 2, when hoop winding is performed by the hoop winding device 40, first, the first guide rollers 45, 45,. The second fiber bundles 42a, 42a, drawn out through the two guide rollers 46, 46, the second resin impregnating device 44, and the third guide rollers 47, 47 are fixed to the mandrel 1a with an adhesive tape. The Next, the third driving device 48 and the fourth driving device are operated (the hoop winding device 40 is operated), and the winding table 41 of the hoop winding device 40 is rotated at a constant speed along the second rails 12 and 12. Moved. As a result, the second fiber bundles 42a, 42a,... Wound around the bobbins 42, 42,... Pass through the first guide rollers 45, 45,. The resin is impregnated by being guided by the two resin impregnating device 44 and injected by the resin from the second resin impregnating device 44, and is guided to the mandrel 1a through the third guide rollers 47 and 47 and wound around the mandrel 1a. When the layer of the second fiber bundles 42a, 42a,... Impregnated with resin is formed on the mandrel 1a and the hoop winding is completed, the third driving device 48 and the fourth driving device are stopped (the hoop winding device 40 is stopped). The rotation and movement of the winding table 41 are stopped.

  After the helical winding by the helical winding device 30 and the hoop winding by the hoop winding device 40 are alternately performed a predetermined number of times, the first fiber bundle 32a and the second fiber bundles 42a, 42a, ... wound around the mandrel 1a Is heated in a resin curing furnace or the like, the resin impregnated in the first fiber bundle 32a and the second fiber bundles 42a, 42a... Is cured to form a fiber-reinforced composite material. In this way, a high-pressure tank or the like using the fiber reinforced composite material is manufactured.

  Below, the 2nd resin impregnation apparatus 44 of the hoop winding apparatus 40 is demonstrated.

  As shown in FIGS. 2 and 3, the second resin impregnation device 44 includes a tensor 44a, a resin supply nozzle 44b, an adhesion sensor 44c, a resin tank (not shown) in which resin is stored, a first air supply pipe 44d, And an air storage tank (gas storage tank) 44e in which high-pressure air (compressed gas) is stored.

  When the hoop winding is performed by the hoop winding device 40, the second fiber bundle 42a guided from the bobbin 42 to the second resin impregnation device 44 is transferred to the mandrel 1a through the following processes (1) to (3). Guided. (1) First, a predetermined tension is applied by the tensor 44a. (2) Next, the resin is injected from the resin supply nozzle 44b. (3) Next, the adhesion state of the resin is detected by the adhesion sensor 44c.

  The resin injection by the resin supply nozzle 44b in (2) is performed by a spray method using high-pressure air. More specifically, the resin supply nozzle 44b is connected to the resin tank, and a resin pump (not shown) connected to the resin tank is driven to supply resin from the resin tank to the resin supply nozzle 44b. The The resin supply nozzle 44b is connected to the air storage tank 44e via a first air supply pipe 44d that is a tubular member. The first air supply pipe 44d is provided with an electromagnetic on-off valve (not shown). When the electromagnetic on-off valve is opened, high-pressure air is supplied from the air storage tank 44e to the resin supply nozzle 44b through the first air supply pipe 44d. When the electromagnetic on-off valve is closed, the first air supply pipe 44d is closed, and the supply of high-pressure air to the resin supply nozzle 44b is stopped. A control device (not shown) is connected to the resin pump and the electromagnetic on-off valve, and the control device transmits a signal to the resin pump and the electromagnetic on-off valve to determine whether the resin pump is driven. And opening / closing of the electromagnetic on-off valve is determined. The control device includes a configuration in which CPU, ROM, RAM, HDD, and the like are connected to each other via a bus. The control device stores various control programs, and can expand these programs. Predetermined calculations can be performed according to these programs. The control device drives the resin pump and opens the electromagnetic on-off valve, whereby resin is supplied from the resin tank to the resin supply nozzle 44b and high-pressure air is supplied to the air storage tank 44e. Supplied from As a result, the resin is blown out by the high-pressure air and is injected from the resin supply nozzle 44b toward the second fiber bundle 42a. In this embodiment, the resin is injected using high-pressure air in consideration of ease of handling or cost, but other high-pressure gas may be used.

  The tensor 44a, the resin supply nozzle 44b, the adhesion sensor 44c, the resin tank, and the air storage tank 44e are integrally attached to one board surface of the winding table 41 so as to be freely movable (rotatable). Resin injection by the resin supply nozzle 44b, that is, supply of high-pressure air from the air storage tank 44e to the resin supply nozzle 44b is performed by the winding table 41, the resin supply nozzle 44b, the air storage tank 44e, etc. rotating integrally. Done when.

As described above, the resin supply nozzle 44b and the air storage tank 44e are attached to the same member (the winding table 41) so as to be integrally movable so that the resin supply nozzle 44b can be moved from the integrally moving air storage tank 44e. Since it is not necessary to use a rotary joint to supply high-pressure air to the device, the device configuration for injecting resin with high-pressure air can be simplified (the number of members can be reduced), and the device can be manufactured. Cost can be reduced. The amount of resin stored in the resin tank and the capacity of the air storage tank 44e are appropriately determined according to the amount of the second fiber bundle 42a wound around the mandrel 1a.
Moreover, although the member which attaches the air storage tank 44e so that movement is integrally possible was directly attached to the winding table 41 in this embodiment, if it is a member which moves with the winding table 41, it is a member different from the winding table 41 But you can. For example, a synchronous movement member that moves (rotates) together with the winding table 41 may be attached to the cylindrical portion 48d of the third drive device 48, and the air storage tank 44e may be attached to the synchronous movement member.

[Second Embodiment]
Below, the filament winding apparatus 2 which is 2nd embodiment of the filament winding apparatus which concerns on this invention is demonstrated.

  As shown in FIG. 4A and FIG. 4B, the filament winding apparatus 2 includes an air supply tank (gas supply means) 50 in which high-pressure air is stored, and a second air supply pipe 51. .

  One end of the second air supply pipe 51, which is a tubular member, can be connected to and separated from the air storage tank 44e, the other end is connected to the air supply tank 50, and one end of the second air supply pipe 51 is connected to the air storage tank 44e. The high pressure air is supplied from the air supply tank 50 through the second air supply pipe 51 to the air storage tank 44e. Since the air supply tank 50 is provided separately from the winding table 41 of the helical winding device 30, the driving force generated by the third driving device 48 and the fourth driving device does not act and is stationary.

  The control device is connected to the first drive device, the second drive device, the third drive device 48, and the fourth drive device, and transmits the signal, thereby transmitting the first drive device and the second drive device. The third driving device 48 and the fourth driving device are activated and stopped, that is, the helical winding device 30 and the hoop winding device 40 are activated and stopped. The control device is connected to an actuator (not shown) that connects and separates the air storage tank 44e and the second air supply pipe 51, and transmits a signal to the actuator to transmit the signal to the actuator. Connection and separation with the air supply pipe 51 are performed.

The control device stops the hoop winding device 40 when the helical winding device 30 is operating, and stops the helical winding device 30 when the hoop winding device 40 is operating.
As shown in FIG. 4A, when the control device operates the helical winding device 30 to stop the hoop winding device 40, that is, the winding table 41 (air storage tank 44e) of the hoop winding device 40 When stationary, the resin pump is stopped, the electromagnetic on-off valve is closed, and the air storage tank 44e and the second air supply pipe 51 are connected to the actuator. Thereby, the supply of high-pressure air from the air storage tank 44e to the resin supply nozzle 44b is stopped, and high-pressure air is supplied from the air supply tank 50 to the air storage tank 44e.
As shown in FIG. 4 (b), when the hoop winding device 40 is operated to stop the helical winding device 30, that is, when the air storage tank 44e is rotated and moved, the control device applies air to the actuator. The storage tank 44e and the second air supply pipe 51 are separated, and further, the electromagnetic on-off valve is opened and the resin pump is driven. Accordingly, the supply of high-pressure air from the air supply tank 50 to the air storage tank 44e is stopped, and high-pressure air is supplied from the air storage tank 44e to the resin supply nozzle 44b.

Thus, when the hoop winding device 40 is stopped, that is, when the air storage tank 44e is stationary, high pressure air is supplied from the air supply tank 50 to the air storage tank 44e. High pressure air can be added (supplemented) to the air storage tank 44e. Therefore, the device configuration for injecting resin with high-pressure air can be simplified (the number of members can be reduced), and the manufacturing cost of the device can be reduced. Furthermore, since the high pressure air is appropriately replenished to the air storage tank 44e, the amount of high pressure air necessary for injecting the resin can be secured.
Note that an air compressor may be used instead of the air supply tank 50, and high-pressure air may be supplied from the air compressor to the air storage tank 44e when the hoop winding device 40 is stopped.
Further, instead of the control device, an operator or the like may operate and stop the helical winding device 30 and the hoop winding device 40 and connect and separate the air storage tank 44e and the second air supply pipe 51.

[Third embodiment]
Below, the filament winding apparatus 3 which is 3rd embodiment of the filament winding apparatus which concerns on this invention is demonstrated.

  As shown in FIG. 5, the filament winding apparatus 3 includes an air compressor (gas supply means) 60 and a third air supply pipe 61. The air compressor 60 is attached to one surface of the winding table 41 so as to be movable (rotatable) integrally, and is connected to the air storage tank 44e by a third air supply pipe 61, and is generated by the air compressor 60. The air is supplied to the air storage tank 44e through the third air supply pipe 61, and as a result, is used for the injection of resin from the resin supply nozzle 44b.

Thus, since the high-pressure air is once supplied from the air compressor 60 to the air supply tank 50 and then used for resin injection, high-pressure air is generated by the air compressor 60 when the hoop winding device 40 is stopped. And can be stored in the air supply tank 50 (see FIG. 5) and used for resin injection when the hoop winding device 40 is operated. Therefore, compared to a hoop winding device that uses high-pressure air directly from the air compressor for resin injection without going through an air tank, the amount of high-pressure air required for resin injection can be secured even if the air compressor is downsized. The manufacturing cost can be reduced.
Note that the member to which the air compressor 60 is integrally attached is movably attached to the winding table 41 in this embodiment. However, if the member moves (rotates) together with the winding table 41, May be a separate member.

The schematic block diagram which shows 1st embodiment of the filament winding apparatus which concerns on this invention. The schematic block diagram which shows a hoop winding apparatus. The schematic block diagram which shows a 2nd resin impregnation apparatus. (A) The schematic block diagram which shows 2nd embodiment of the filament winding apparatus which concerns on this invention, (b) The schematic block diagram which shows 2nd embodiment of the filament winding apparatus which concerns on this invention. The schematic block diagram which shows 3rd embodiment of the filament winding apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Filament winding apparatus 1a Mandrel 30 Helical winding apparatus 40 Hoop winding apparatus 41 Winding table 42a Second fiber bundle 44 Second resin impregnation apparatus 44e Air storage tank

Claims (5)

A filament winding device equipped with a hoop winding device,
The hoop winding device includes a winding table that rotates around a mandrel, and a resin impregnation device that rotates together with the winding table and injects and impregnates resin toward the fiber bundle with compressed gas,
The filament winding apparatus, wherein the resin impregnation apparatus includes a gas storage tank that rotates together with the winding table and stores the compressed gas.   The filament winding apparatus according to claim 1, further comprising gas supply means for supplying the compressed gas to the gas storage tank. The gas supply means is provided separately from the winding table, and can be connected to and separated from the gas storage tank,
When the winding table is stationary, connected to the gas storage tank to supply the compressed gas,
The filament winding apparatus according to claim 2, wherein the winding table is separated from the gas storage tank when the winding table is rotating.   The filament winding apparatus according to claim 2, wherein the gas supply means rotates together with the winding table.   The filament winding apparatus according to any one of claims 2 to 4, wherein the gas supply means includes a compressor or a gas supply tank.

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