JP2010005965A - Filament winding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filament winding apparatus which is capable of winding treatment without making a liner deformed, for example, by torsion even when many fiber bundles are simultaneously wound around the liner. <P>SOLUTION: The filament winding apparatus 1 which winds fiber bundle 80 around the circumferential surface of the liner 4 has first and second driving parts 19 and 20 for rotating the liner 4 when the fiber bundle 80 is wound around the circumferential surface of the liner 4. The first driving 19 is arranged in the first end part 4a in the longitudinal direction of the liner 4, and the second driving part 20 is arranged in the second end part 4b in the longitudinal direction of the liner 4. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a technique of a filament winding apparatus for winding a fiber bundle around a peripheral surface of a liner.

  Conventionally, when a pressure vessel or the like is formed by a filament winding method, a hoop winding that winds a fiber bundle coated with a resin around the liner so as to be substantially orthogonal to the axial direction of the liner, and the axial direction of the liner The reinforcing layer is formed by using a helical winding wound around the peripheral surface of the liner at a predetermined angle. The filament winding apparatus using both hoop winding and helical winding has been known in the art (for example, Patent Document 1). In such a filament winding apparatus, a large number of fiber bundles are guided by a helical winding ring. A group of fiber bundles are wound around the liner at the same time. By winding a large number of fiber bundles simultaneously around the peripheral surface of the liner, the winding process can be performed in a short time, and a pressure vessel or the like can be manufactured efficiently.

  Usually, when performing helical winding, the fiber bundle is wound while rotating the liner. Also, when the hoop winding is performed, the fiber bundle may be wound while the yarn feeding package is supported by a separate creel and the liner is rotated. In a filament winding apparatus that winds a fiber bundle while rotating such a liner, both ends of the liner are supported by a support shaft, and a drive unit such as a motor is provided on the support shaft on one end side (drive side) of the liner, The support shaft on the other end side (driven side) of the liner is supported to be driven, and the liner is rotated by driving the driving unit (for example, Patent Document 2).

In the filament winding apparatus having such a configuration, if a larger number of fiber bundles are wound around the liner at the same time in order to perform the winding process in a shorter time, the torque required to rotate the liner is greatly increased. Therefore, the torque of the drive unit that rotates the liner must be increased.
JP 2004-314550 A JP-A-5-338043

  However, when the liner is rotated with a large torque by the driving unit provided on one end side of the liner, the torsional stress generated between one end side (driving side) and the other end side (driven side) of the liner increases. Therefore, when a liner having a relatively low strength is used, there is a problem that the liner is deformed or damaged due to torsional deformation.

  The present invention has been made to solve such a problem. A filament winding apparatus capable of performing a winding process without deforming the liner due to twisting or the like even when a large number of fiber bundles are wound around the liner at the same time. The purpose is to provide.

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

A filament winding apparatus according to a first invention is a filament winding apparatus for winding a fiber bundle around a peripheral surface of a liner,
When winding a fiber bundle around the peripheral surface of the liner, the first drive unit for rotating the liner, and a second drive unit,
The first driving unit is disposed at a first end of the liner in the longitudinal direction;
The second driving unit is disposed at a second end in the longitudinal direction of the liner.

A filament winding apparatus according to a second invention is the filament winding apparatus according to the first invention,
Between the first drive unit and the second drive unit and disposed at a position facing the liner, while being in contact with the outer peripheral surface of the liner or the peripheral surface of the fiber bundle wound around the liner A touch roller for rotating the liner is provided.

A filament winding apparatus according to a third invention is the filament winding apparatus according to the first or second invention,
The first drive unit and the second drive unit are operated synchronously.

A filament winding apparatus according to a fourth invention is the filament winding apparatus according to the third invention,
A detection unit for detecting a difference in operation cycle between the first drive unit and the second drive unit;
An adjustment unit that adjusts a difference in operation cycle between the first drive unit and the second drive unit based on a detection result of the detection unit;
It comprises.

  As effects of the present invention, the following effects can be obtained.

  In the first invention, a filament winding apparatus for winding a fiber bundle around the peripheral surface of the liner, the first drive unit and the second drive unit for rotating the liner when winding the fiber bundle around the peripheral surface of the liner Since the first drive unit is disposed at the first end portion in the longitudinal direction of the liner and the second drive unit is disposed at the second end portion in the longitudinal direction of the liner, only one end side of the liner is provided. Instead, it can be rotationally driven from both ends of the liner. Therefore, when the liner is rotated, the torsional stress generated at both ends of the liner can be kept low, and the liner is not deformed or damaged due to torsional deformation or the like. In addition, since the torque necessary to rotate the liner is distributed at both ends of the liner, the torque of the first drive unit and the second drive unit is compared with the case where the drive unit is provided only at one end of the liner. Can be small.

  In the second aspect of the invention, it is disposed between the first drive unit and the second drive unit at a position facing the liner, and is in contact with the outer peripheral surface of the liner or the peripheral surface of the fiber bundle wound around the liner. However, since the touch roller that rotates the liner is provided, the rotational drive of the first drive unit and the second drive unit can be assisted. Therefore, the torque of the first drive unit and the second drive unit can be further reduced.

  In the third aspect of the invention, since the first drive unit and the second drive unit are operated synchronously, the first drive unit and the second drive unit can be driven at the same rotational speed. Therefore, when the liner is rotated, there is no difference in load applied to both ends of the liner, and the liner is not deformed or damaged due to torsional deformation or the like. Further, since the rotational speed at both ends of the liner can always be kept constant, the fiber bundle can be evenly wound around the liner.

  In the fourth aspect of the invention, the operating period of the first driving unit and the second driving unit based on the detection result of the detecting unit detecting the difference in operating cycle between the first driving unit and the second driving unit, and the detection result of the detecting unit. Therefore, the rotation speeds of the first drive unit and the second drive unit can always be kept uniform. Therefore, when the liner is rotated, there is no difference in load applied to both ends of the liner, and the liner is not deformed or damaged due to torsional deformation or the like. Further, since the rotational speed at both ends of the liner can always be kept constant, the fiber bundle can be evenly wound around the liner.

  Hereinafter, a filament winding apparatus 1 (hereinafter referred to as FW apparatus 1) according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view of the winding device 2 in the FW device 1, FIG. 2 is a plan view of the winding device 2 in the FW device 1, and FIG. 3 is a front view of the winding device 2 in the FW device 1.

  The FW device 1 includes a fiber bundle supply device (not shown) and a winding device 2. The winding device 2 includes a hoop winding device 5, a helical winding device 6, a support base 7, and a touch roller 8. The hoop winding device 5 and the support base 7 can be reciprocally driven along the longitudinal direction (arrow 90) of the base 3 by a drive mechanism (not shown). The helical winding device 6 is fixed at the center position of the base 3 and feeds and guides the fiber bundle 80 fed from a group of creel supported by the fiber bundle supply device to the liner 4.

  The hoop winding device 5 includes a frame 10 that is moved and guided by a rail 9 on a base 3, a disk-shaped winding table 11 that is rotatably supported by the frame 10, and a drive mechanism that rotationally drives the winding table 11. (Not shown). In the winding table 11, a plurality of bobbins 12, 12... For supplying the fiber bundle 80 during hoop winding are arranged at equal intervals along the periphery of the winding table 11. A circular opening 11 a that allows the liner 4 to reciprocate is formed in the center of the plate surface of the winding table 11. The hoop winding device 5 revolves the entire hoop winding device 5 while rotating the winding table 11 in a state where the opening surface of the opening 11a and the liner 4 are orthogonal to each other. A winding layer can be formed.

  The helical winding device 6 includes a fixed frame 13 erected on the base 3, a helical winding head 14 supported by the fixed frame 13, and a guide for deflecting and guiding a group of fiber bundles 80 toward the helical winding head 14. A roller 15 (FIG. 3). A circular opening 13a that allows the liner 4 to reciprocate is formed in the center of the lateral surface of the fixed frame 13, and a guide roller 15 is disposed on a plate surface around the opening 13a. The fiber bundle 80 supplied from the fiber bundle supply device is guided by the turning rollers 16 (FIG. 2) arranged on both the front and rear sides of the fixed frame 13 and then fed to the helical winding head 14. The helical winding head 14 is provided with a group of guide cylinders 30 (FIG. 3) arranged at equal intervals along the circumferential direction, and guides the fiber bundle 80 fed to the helical winding head 14 to the guide cylinder 30, so that the liner 4 Wrap around.

  The support base 7 is disposed on the upper part of the base 3 that is long on the left and right sides and supports the liner 4. The support base 7 includes a base 17, support arms 18 and 18, a first drive unit 19, and a second drive unit 20.

  The base 17 is a portion that becomes a base of the support base 7, and is guided by a pair of front and rear rails 40 on the base 3. The support arms 18 and 18 are portions that support the end portions of the liner 4 via the first drive unit 19 and the second drive unit 20, and are erected on both side ends of the base 17. The support arms 18 and 18 are assembled so as to be able to change from a standing posture with respect to the base 17 to a laterally tilted posture in order to facilitate replacement of the liner 4.

  The first drive unit 19 and the second drive unit 20 rotate the liner 4 when the fiber bundle 80 is wound by the helical winding device 6. The first drive unit 19 is disposed at the first end 4 a in the longitudinal direction of the liner 4, and the second drive unit 20 is disposed at the second end 4 b in the longitudinal direction of the liner 4. In other words, the first drive unit 19 and the second drive unit 20 are disposed at both ends of the liner 4, so that the liner 4 is rotationally driven from both ends of the liner 4.

  The first drive unit 19 and the second drive unit 20 include a fixing jig 21, a chuck 22, and a motor 23. In addition, the 1st drive part 19 and the 2nd drive part 20 are not limited to the structure of the fixing jig 21, chuck | zipper 22, and motor 23 demonstrated below, The fiber bundle 80 is wound by the helical winding apparatus 6. In this case, any configuration capable of rotating the liner 4 may be used.

  The fixing jig 21 is a jig that is detachably fixed to the first end 4 a and the second end 4 b in the longitudinal direction of the liner 4. The fixing jig 21 serves as a rotation axis when the liner 4 is rotated.

  The chuck 22 is provided on the upper end facing surface of the support arms 18. The chuck 22 grips and fixes the fixing jig 21. The chuck 22 supports the liner 4 between the support arms 18 and 18 by grasping and fixing the fixing jig 21. Then, the fixing jig 21 is rotated by the rotation of the chuck 22, and the liner 4 is rotated according to the rotation.

  The motor 23 is a drive source for rotating the chuck 22. The motor 23 is provided on the side wall at the upper end of the support arm 18. The shaft 23a of the motor 23 protrudes through the opening 18a of the support arm 18, and the chuck 22 is connected to the tip thereof. Then, when the motor 23 is driven, the chuck 22 is rotationally driven. The motors 23 and 23 are controlled by a control unit 85 (FIG. 4), which will be described later, and the control unit 85 controls the motors 23 and 23 so that the rotational driving of the chucks 22 and 22 connected to the motors 23 and 23 is synchronized. Done by driving.

  The touch roller 8 is disposed between the first drive unit 19 and the second drive unit 20 at a position facing the liner 4, and the outer peripheral surface of the liner 4 or the fiber bundle 80 wound around the liner 4. The liner 4 is rotated while contacting the peripheral surface. The touch roller 8 is provided on the base 17 of the support base 7. Although only one touch roller 8 is illustrated in FIG. 1, a plurality of touch rollers 8 may be provided side by side on the base 17 depending on the size of the liner 4 and the like. As shown in FIG. 1, the touch roller 8 includes a roller portion 25, a rotation shaft 26, arm portions 27 and 27, and a drive portion 28.

  The roller portion 25 is a cylindrical member that rotates while contacting the outer peripheral surface of the liner 4 or the peripheral surface of the fiber bundle 80 wound around the liner 4. The roller portion 25 has a rotation shaft 26 inserted in the longitudinal direction. Both ends of the rotating shaft 26 are inserted into coaxial holes 27a and 27b formed in the arm portions 27 and 27 arranged at a predetermined interval. The roller portion 25 is supported between the arm portions 27 and 27 by the rotation shaft 26 being inserted into the holes 27a and 27b.

  The drive unit 28 is a drive source for rotating the roller unit 25. The drive unit 28 is provided on the side wall at the upper end of the arm unit 27. The shaft 28a of the drive unit 28 is connected to one end of the rotary shaft 26 inserted through the hole 27b. When the drive unit 28 is driven, the rotary shaft 26 is driven to rotate, and the roller unit 25 rotates.

  Next, the winding operation of the FW device 1 will be described. When performing the hoop winding, the winding table 11 is positioned at one side end of the cylindrical portion of the liner 4, and the fiber bundle 80 fed out from each bobbin 12 is fixed to the surface of the liner 4 with an adhesive tape. At this time, the plurality of fiber bundles 80 are arranged in parallel along the peripheral surface of the liner 4 without a gap. In this state, the frame 10 is moved toward the first end portion 4a of the liner 4 while rotating the winding table 11 to form a first hoop winding layer. Subsequently, the frame 10 is reversely moved to the second end 4b of the liner 4 to form a second hoop winding layer on the outer surface of the previous hoop winding layer. Further, when forming a hoop winding layer, the winding process is performed a required number of times by reciprocating the frame 10.

  When performing helical winding, the helical winding head 14 is rotated and the support 7 is moved so that the first end 4 a of the liner 4 faces the inner surface of the helical winding head 14. The fiber bundle 80 drawn from each guide cylinder 30 (FIG. 3) is fixed to the circumferential surface of the first end 4a of the liner 4 with an adhesive tape. After fixing, the support 7 is moved at a constant speed while the chuck 22 and the liner 4 are rotationally driven. When the entire liner 4 passes through the helical winding head 14, a helical winding layer is formed on the liner 4. Subsequently, the helical winding layer is formed on the outer surface of the previous helical winding layer by performing the helical winding while moving the support base 7 in the opposite direction. Furthermore, when forming a helical winding layer, the winding process is performed a required number of times by reciprocating the support base 7.

  Next, control of the first drive unit 19 and the second drive unit 20 will be described. FIG. 4 is a system diagram of the first drive unit 19 and the second drive unit 20, and FIG. 5 is a flowchart in the control of the first drive unit 19 and the second drive unit 20.

  As shown in FIG. 4, the motor 23 of the first drive unit 19 and the motor 23 of the second drive unit 20 are connected to the control unit 85, and the drive of the motors 23 and 23 is controlled by the control unit 85. Yes. The motors 23 and 23 are connected to the output detection units 31 and 31. The output detectors 31 and 31 detect the rotational output of the motors 23 and 23. The output detection units 31 and 31 are connected to the control unit 85 and transmit detection results to the control unit 85. The control unit 85 detects a difference in the operation cycle of the motors 23 and 23 based on the detection signals transmitted from the output detection units 31 and 31. And the control part 85 adjusts the difference of the driving cycle of the motors 23 and 23 based on the detection result of the difference of the said driving cycle. As described above, the control unit 85 functions as a detection unit that detects a difference in the operation cycle between the motor 23 of the first drive unit 19 and the motor 23 of the second drive unit 20, and the operation cycle of the motors 23 and 23. It functions as an adjustment unit that adjusts the difference between the two.

  As shown in FIG. 5, when the control unit 85 transmits a control signal to the motors 23 and 23, the motors 23 and 23 start driving (S1). When the motors 23 and 23 start driving, the output detection units 31 and 31 detect rotational outputs of the motors 23 and 23 (S2), and transmit detection signals to the control unit 85. When receiving the detection signal, the controller 85 determines whether or not the motors 23 and 23 are operating at a predetermined operation cycle (S3). Here, the predetermined movement cycle is an operation cycle of the motors 23 and 23 determined by requirements such as the size and strength of the liner 4 and the material of the fiber bundle 80, and the fiber bundle 80 is uniformly wound around the liner 4. The operation cycle of the motors 23 and 23 is possible. The operation cycle is determined in advance by a program, and the control unit 85 detects the operation cycle of the motors 23 and 23 by the program and controls the motors 23 and 23.

  When the control unit 85 determines that the motors 23 and 23 are not operating at a predetermined operation cycle (S3-No), the control unit 85 determines whether the motors 23 and 23 are operating at a predetermined operation cycle. Is repeated for a predetermined time (S3). Here, even after the predetermined time has elapsed, when the control unit 85 determines that at least one of the motors 23 and 23 is not operating at a predetermined operation cycle, the control unit 85 determines that at least one of the motors 23 and 23 is It is determined that there is an abnormality, and a control signal for stopping driving is transmitted to the motors 23 and 23.

  When the control unit 85 determines that the motors 23 and 23 are operating at a predetermined operation cycle (S3-Yes), the control unit 85 determines whether or not the operation cycles of the motors 23 and 23 are different. (S4). When it is determined that there is no difference in the operation cycle (S4-No), the control unit 85 holds the control of the motors 23 and 23 while maintaining the control of the motors 23 and 23 based on the detection signals transmitted from the output detection units 31 and 31. -It repeatedly detects a difference in operation cycle from 23 (S2 to S4).

  When it is determined that there is a difference in the operation cycle (S4-Yes), the control unit 85 adjusts the operation cycle of the motors 23 and 23 (S5). When the operation cycle of the motors 23 and 23 is adjusted, the control unit 85 repeatedly detects a difference in the operation cycle of the motors 23 and 23 based on the detection signal transmitted from the output detection units 31 and 31 (S2). To S4).

  As described above, the control unit 85 determines the difference in operation cycle between the motor 23 of the first drive unit 19 and the motor 23 of the second drive unit 20 based on the detection signals transmitted from the output detection units 31 and 31. The motors 23 and 23 are synchronously operated by detecting and adjusting the operation periods of the motors 23 and 23 based on the difference in the operation cycles.

  As described above, the FW device 1 according to the present invention is the filament winding device 1 that winds the fiber bundle 80 around the circumferential surface of the liner 4, and rotates the liner 4 when the fiber bundle 80 is wound by the helical winding device 6. The first drive unit 19 and the second drive unit 20 are arranged, and the first drive unit 19 is disposed at the first end 4a in the longitudinal direction of the liner 4, and the second drive unit 20 is disposed on the liner 4. Since it is disposed at the second end 4b in the longitudinal direction, it can be driven to rotate from both ends of the liner 4 as well as from one end of the liner 4. Therefore, when the liner 4 is rotated, the torsional stress generated at both ends of the liner 4 can be kept low, and the liner 4 is not deformed or damaged due to torsional deformation or the like. Further, since the torque necessary for rotating the liner 4 is distributed at both ends of the liner 4, the first drive unit 19 and the second drive are compared with the case where the drive unit is provided only at one end of the liner 4. The torque of the part 20 can be reduced.

  Further, the FW device 1 according to the present invention is disposed between the first drive unit 19 and the second drive unit 20 at a position facing the liner 4, and is disposed on the outer peripheral surface of the liner 4 or the liner 4. Since the touch roller 8 that rotates the liner 4 while contacting the peripheral surface of the wound fiber bundle 80 is provided, the rotational drive of the first drive unit 19 and the second drive unit 20 can be assisted. Therefore, the torque of the first drive unit 19 and the second drive unit 20 can be further reduced.

  Furthermore, since the FW device 1 according to the present invention operates the first drive unit 19 and the second drive unit 20 synchronously, the first drive unit 19 and the second drive unit 20 are driven at the same rotational speed. Can do. Therefore, when the liner 4 is rotated, there is no difference in the load applied to both ends of the liner 4 and the liner 4 is not deformed or damaged due to torsional deformation or the like. Moreover, since the rotational speed of the both ends of the liner 4 can always be kept constant, the fiber bundle 80 can be evenly wound around the liner 4.

  Furthermore, the FW device 1 according to the present invention includes a first drive unit 19 based on a detection unit that detects a difference in operation cycle between the first drive unit 19 and the second drive unit 20, and a detection result of the detection unit. And an adjustment unit that adjusts the difference in the operation cycle of the second drive unit 20, the rotational speeds of the first drive unit 19 and the second drive unit 20 can always be kept uniform. . Therefore, when the liner 4 is rotated, there is no difference in the load applied to both ends of the liner 4 and the liner 4 is not deformed or damaged due to torsional deformation or the like. Moreover, since the rotational speed of the both ends of the liner 4 can always be kept constant, the fiber bundle 80 can be evenly wound around the liner 4.

  In the above embodiment, the description is limited to the case where the helical winding is performed. However, even when the hoop winding is performed, the yarn supply package is supported by a separate creel and the fiber bundle may be wound while rotating the liner. . In this case, when the number of fiber bundles wound around the liner becomes large, a large torque is required to rotate the liner. Therefore, the present invention can be applied even when hoop winding is performed.

The side view of the winding apparatus 2 in the FW apparatus 1. FIG. FIG. 3 is a plan view of the winding device 2 in the FW device 1. The front view of the winding device 2 in the FW device 1. FIG. The system diagram of the 1st drive part 19 and the 2nd drive part 20. FIG. 7 is a flowchart in the control of the first drive unit 19 and the second drive unit 20.

Explanation of symbols

1 FW device 4 liner 4a first end (liner)
4b Second end (liner)
5 Hoop Winding Device 6 Helical Winding Device 8 Touch Roller 19 First Drive Unit 20 Second Drive Unit 80 Fiber Bundle 85 Control Unit (Detection Unit / Adjustment Unit)

Claims (4)

A filament winding apparatus for winding a fiber bundle around a peripheral surface of a liner,
When winding a fiber bundle around the peripheral surface of the liner, the first drive unit for rotating the liner, and a second drive unit,
The first driving unit is disposed at a first end of the liner in the longitudinal direction;
The second driving unit is disposed at a second end in the longitudinal direction of the liner;
A filament winding apparatus characterized by that. Between the first drive unit and the second drive unit and disposed at a position facing the liner, while being in contact with the outer peripheral surface of the liner or the peripheral surface of the fiber bundle wound around the liner A touch roller for rotating the liner;
The filament winding apparatus according to claim 1. Causing the first drive unit and the second drive unit to operate synchronously;
The filament winding apparatus according to claim 1 or 2, wherein the apparatus is a filament winding apparatus. A detection unit for detecting a difference in operation cycle between the first drive unit and the second drive unit;
An adjustment unit that adjusts a difference in operation cycle between the first drive unit and the second drive unit based on a detection result of the detection unit;
Comprising
The filament winding apparatus according to claim 3.

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