JP4957907B2 - Filament winding equipment - Google Patents

Description

  The present invention relates to a filament winding apparatus in which a fiber bundle is wound around the surface of a mandrel supported at both ends by a hoop winding head and a helical winding head.

  In a filament winding apparatus that supports both mandrels, the shaft-shaped jigs provided at both ends of the mandrel are held and supported by a pair of three-jaw chucks. The three-jaw chuck is rotatably supported by a mandrel support, and one of them is driven to rotate by a motor. A filament winding apparatus that supports both ends of a mandrel with a joint and a rotating body instead of a three-jaw chuck has also been proposed (Patent Document 1).

  There, caps are provided at both ends of the mandrel in the axial direction of the cylinder, and the joints screwed into the caps are pivotally supported by rotating bodies arranged opposite to each other. The mandrel consists of a blow molded inner shell. In order to rotationally drive the mandrel, each rotating body is rotatably supported by a bearing, and one of the rotating bodies is connected to the output shaft of the motor. The cross-sectional shape of the fitting portion between the joint and the rotating body is, for example, a quadrangular shape, and both can rotate together. Each of the rotating bodies arranged to face each other is supported by a support block, and one of the support blocks can be moved toward or away from the other support block. By the operation of the support block, the joint fixed to the mandrel can be chucked by the left and right rotating bodies, or the mandrel subjected to the winding process can be removed from the left and right rotating bodies. Similarly, when holding and fixing shaft-shaped jigs provided at both ends of the mandrel with a three-jaw chuck, the mandrel is attached and detached by reciprocatingly sliding one support block.

  In the filament winding apparatus, it is known in Patent Document 2 that the mandrel after the winding process of the fiber bundle and the mandrel before the winding process are automatically exchanged. There, shaft-shaped jigs provided on both sides of the mandrel are supported by oppositely arranged spindles, and one spindle is driven to rotate by a motor, while the fiber bundle is reciprocated along the longitudinal direction of the mandrel with a traverse device. By doing so, the fiber bundle is wound around the mandrel. The other spindle is rotatably supported by a waist drum. The waist drum can be rotationally driven by a dedicated motor, and the winding start end of the fiber bundle can be held by winding the fiber bundle around the circumference.

  When exchanging the mandrel, the pair of arms supporting the spindle is tilted from the standing posture to the lying posture, and the mandrel after the fiber bundle winding process is completed is placed on the carriage. In this state, both spindles are moved away from each other to separate the previous mandrel from the spindle. Thereby, the mandrel and the new mandrel for which the winding process has been completed are alternately placed on the carriage. The carriage is moved laterally in the arm recumbency direction, a new mandrel is positioned between the spindles, and both spindles are moved in an approaching direction to capture the mandrels. Thereafter, the arm is returned to the standing posture, and the fiber bundle wound around the waist drum is wound as the winding start end.

JP 2000-186799 A (paragraph number 0025, FIGS. 9, 10) JP-A-5-338043 (paragraph number 0037, FIG. 7)

  As described above, in the apparatus of Patent Document 1, since the shaft-shaped jigs provided at both ends of the mandrel are gripped by the rotating body or the chuck and are driven to rotate, the mandrel is replaced or the winding start end of the fiber bundle is used as the mandrel. It takes a lot of manpower to fix. In that respect, the filament winding apparatus of Patent Document 2 can automatically perform a series of operations from replacement of a mandrel to fixing of a winding start end of a fiber bundle. However, it is difficult to apply the automatic mandrel changing apparatus in Patent Document 2 to the filament winding apparatus to which the present invention is applied.

  The apparatus according to the present invention is greatly different from the winding apparatus of Patent Document 2 in that the mandrel is arranged in a state orthogonal to the central opening of the hoop winding head and the helical winding head. Thus, when each head and the mandrel are arranged orthogonally, it is necessary to replace the mandrel while taking the whole mandrel including the mounting jig into and out of the central opening of each head in the axial direction. That is, the movement trajectory when exchanging the mandrels becomes extremely complicated. In addition, the chuck (or rotating body) needs to have a structure that can be driven to rotate. For this reason, when an attempt is made to automatically replace the mandrel, it is inevitable that the apparatus for that purpose will become large, and this is a great barrier to realizing the automatic replacement of the mandrel.

  The objective of this invention is providing the filament winding apparatus provided with the attachment jig | tool suitable for implement | achieving automatic replacement | exchange of a mandrel, and the drive structure of an attachment jig | tool. The present invention can be suitably applied to a filament winding apparatus in which the mandrel intersects with the openings of the hoop winding head and the helical winding head.

  In the filament winding apparatus of the present invention, mounting jigs 5 fixed to both ends of the mandrel M1 in the axial direction are supported by a pair of chucks 6, and the mandrel is supported by the chuck 6 supporting one mounting jig 5. A motor 15 that rotationally drives M1 is disposed. The mounting jig 5 includes a holding body 10 that is clamped and fixed by the chuck 6 and a shaft body 12 that is rotatably supported by the holding body 10. The shaft body 12 is fixed to the mandrel M <b> 1. The chuck 6 includes a pair of sandwiching bodies 21 and 22 for sandwiching and fixing the holding body 10 and an actuator 23 for operating at least one of the sandwiching bodies 21 and 22 with respect to the other sandwiching body. In the state where the chuck 6 is switched to the mounting posture by the actuator 23, the mounting jig 5 can be relatively put in and out along the radial direction of the shaft body 12 from between the opposing surfaces of the both sandwiching bodies 21 and 22. A driving gear 18 for outputting motor power is provided on the clamping body 21 of the chuck 6 on the side where the motor 15 is disposed, and meshes with the driving gear 18 on the shaft body 12 of the mounting jig 5 on the side captured by the chuck 6. The passive gear 16 is fixed.

  A shaft body 12, a rotary bearing body 11 that pivotally supports the shaft body 12, and a passive gear 16 are arranged inside the cylindrically-shaped holding body 10, and the cylindrical wall of the holding body 10 that faces the passive gear 16 is arranged. A gear opening 17 that allows the driving gear 18 to enter and exit is formed.

  In the present invention, the mounting jig 5 fixed to both ends of the mandrel M1 is composed of a holding body 10 that is clamped and fixed by a chuck 6 and a shaft body 12 that is rotatably supported by the holding body 10. The mandrel M1 was rotatably supported by a pair of mounting jigs 5. Furthermore, the mandrel M1 can be driven to rotate by driving the shaft body 12 of one mounting jig 5 with the power of the motor 15. Thus, if the mandrel M1 is rotatably supported on the mounting jig 5 side, it is not necessary to provide a bearing structure on the chuck 6 side, and the chuck 6 and its peripheral structure can be simplified. Further, in the state where the chuck 6 is switched to the mounting posture by the actuator 23, the mounting jig 5 is simply taken in and out along the radial direction of the shaft body 12 from between the opposing surfaces of the both sandwiching bodies 21 and 22. The mounting jig 5 can be clamped by the chuck 6 or the mounting jig 5 can be separated from the chuck 6. Therefore, according to the apparatus of the present invention, the winding of the pressure vessel or the like is realized by realizing the automatic replacement of the mandrel M1 even though the winding is performed in a state where the mandrel M1 is crossed with the hoop winding head 31 and the helical winding head 32. Product can be manufactured efficiently.

  When the shaft body 12, the rotary bearing body 11, and the passive gear 16 are disposed inside the cylindrically formed holding body 10, the passive gear 16 can be protected by the holding body 10. Therefore, when handling the new mandrel M1 or the mandrel M2 around which the fiber bundle R is wound, it is possible to reliably prevent the passive gear 16 from coming into contact with other objects and being damaged. Further, it is possible to well prevent the cutting waste of the fiber bundle R from adhering to the tooth surface of the passive gear 16.

(Example) FIG. 1 thru | or FIG. 13 shows the Example of the filament winding apparatus based on this invention. The filament winding apparatus includes a supply unit that supports a group of creels and a winding device that winds the fiber bundle R fed from the supply unit around the mandrel M1. The winding device is provided with an attaching / detaching device for removing the mandrel M2 after the winding process from the winding device or loading a new mandrel M1 into the winding device.

  When the final product is a pressure vessel, the mandrel M1 is configured in a container shape using a metal material such as a high-strength aluminum material or stainless steel, or a resin molded product. In this embodiment, as shown in FIGS. 1 and 2, the mandrel M <b> 1 has a central cylindrical portion 1, a dome portion 2 continuous at both ends of the cylindrical portion 1, and a mouth portion protruding from the top of the dome portion 2. 3 will be described. The fiber bundle R is made of, for example, a bundle of glass fibers or carbon fibers. The fiber bundle R wound on the previous creel is impregnated with a thermosetting plastic material in advance. The fiber bundle R fed from the creel may be impregnated with a molten plastic material and then fed to the winding device.

  As shown in FIG. 2, the mandrel M <b> 1 is loaded into the winding device in a state where the mounting jig 5 is mounted on the mouth portion 3. As shown in FIG. 1, the mounting jig 5 includes a round cylindrical holder 10 that is clamped and fixed by a chuck 6 of a winding device, and a pair of bearings (rotary bearing bodies) 11 that are fixed inside the holder 10. And a shaft body 12 that is rotatably supported by both bearings 11. One end of the shaft body 12 is detachably fixed to the previous opening 3, and a small-diameter shaft portion 12 a at the other end of the shaft body 12 is pivotally supported by both bearings 11. The diameter dimension of the mouth 3 is set larger than the diameter dimension of the holding body 10.

  Of the two mounting jigs 5, the shaft body 12 of one mounting jig 5 is rotationally driven by a motor 15 provided on the chuck 6. For this purpose, the passive gear 16 is fixed to the shaft portion 12 a of the left mounting jig 5 as viewed in FIG. 1, and the gear opening 17 is formed in the cylindrical wall of the holding body 10 facing the passive gear 16. The rotational power of the previous motor 15 is transmitted to the passive gear 16 via a driving gear 18 provided on the chuck 6 side.

  As shown in FIGS. 3 to 5, the chuck 6 basically includes a pair of sandwiching bodies 21, 22 that are vertically opposed to each other, and an air cylinder (a cylinder that moves the lower sandwiching body 22 toward and away from the upper sandwiching body 21). Actuator) 23 and a chuck base 24 for supporting these members. Recesses 25 for receiving the previous holding body 10 are respectively formed on the opposing surfaces of the holding bodies 22. Of the pair of chucks 6, the previous driving gear 18 is incorporated in the holding body 21 of one chuck 6.

  In FIG. 2, the winding device mainly includes two sets of hoop winding heads 31 for hoop winding the fiber bundle R around the cylindrical portion 1, and helical winding of the fiber bundle R around the cylindrical portion 1 and the dome portion 2. And a helical winding head 32. As shown in FIG. 7, the hoop winding head 31 includes a frame 34 having a circular opening 33 in the center, a plurality of bobbins 35 that are pivotally driven along the previous opening 33, and guide grooves that guide the transition of the bobbin 35. 36 and a drive mechanism of a bobbin 35 (not shown). The mandrel M1 is supported by the central portion of the opening 33 in a state orthogonal to the frame 34. Therefore, by rotating the bobbin 35, the fiber bundle R fed out from the bobbin 35 can be wound around the mandrel M1. Moreover, the winding position with respect to the mandrel M1 of the fiber bundle R can be changed by reciprocatingly driving the frame 34 along the longitudinal direction of the base 30.

  In FIG. 6, the helical winding head 32 includes a gate-shaped frame 41 having a circular opening 40 in the center, a guide ring 42 disposed on the periphery of the opening 40, and a tension adjusting unit 43 disposed on both sides of the guide ring 42. Etc. Although not shown, a group of auxiliary guides are arranged around the guide ring 42, and an opening guide is provided on the inner surface of the guide ring 42 corresponding to the group of guide holes penetrating the guide ring 42. . The mandrel M <b> 1 is supported by the central portion of the opening 40 in a state orthogonal to the frame 41.

  The fiber bundle R fed from the supply unit is deflected and guided by a guide roller disposed on the outer side of the frame 41, and given a predetermined tension by the tension adjusting unit 43, and then into the guide hole of the guide ring 42. Guided. The frame 41 is fixed to the central portion of the base 30 in the longitudinal direction. Therefore, the fiber bundle R guided by the guide ring 42 can be wound along the longitudinal direction of the peripheral surface of the mandrel M1 by rotating the mandrel M1 by a predetermined angle while reciprocating the mandrel M1.

  The attachment / detachment device is configured by combining the pair of chucks described above and a chuck for changing the mandrel M1. In the filament winding apparatus shown in FIGS. 8 to 13, two groups of mandrels M1 are alternately loaded into the winding apparatus, or the mandrel M2 after the winding process is alternately removed from the winding apparatus, so that two sets of attachment / detachment are performed. The device is provided in a winding device.

  Of the two sets of attachment / detachment devices, chucks that support the right mandrel M1 as viewed in FIG. 8 are denoted by reference numerals 6R, 6R, and 46R in FIGS. Similarly, chucks that support the left mandrel M1 as viewed in FIG. 8 are denoted by reference numerals 6L, 6L, and 46L in FIGS. The holding chucks 46R and 46L have the same structure as the chucks 6R and 6L on the side where the motor 15 is not provided. Each of the chucks described above is configured so that it can move not only in the longitudinal direction of the base 30 but also in a direction toward or away from the base 30. The base 30 is provided with two sets of hoop winding heads 31 with a helical winding head 32 interposed therebetween. Two sets of hoop winding heads 31 are provided, one for each of the right mandrel group and the left mandrel group.

  FIG. 8 shows the mandrel M2 in a state where the winding is finished. In this state, the end portion of the fiber bundle R drawn out from each hoop winding head 31 and the end portion of the fiber bundle R drawn out from the helical winding head 32 are respectively wound around the delivery ring 51. By cutting the fiber bundle R between the delivery rings 50 and 51 with the cutter 52, the delivery ring 51 on the side that becomes the winding start end is separated from the mandrel M2. In the mandrel M2, the holding bodies 10 at both ends of the mounting jig 5 are held and held by the chucks 6R and 6R.

  In the above state, as shown in FIG. 9, a new mandrel M1 from the left mandrel group is sandwiched and held by the chucks 6L and 46L, and loaded into the winding center of the winding device. As shown in FIG. 9, the left chuck 6 </ b> L sandwiches the holder 10 of the mounting jig 5, and the right chuck 46 </ b> L sandwiches the shaft body 12 near the mouth 3. In this state, the mandrel M1 is positioned at the winding center, the side ends of the holding body 10 are brought into contact with each other, and both mandrels M1 and M2 are simultaneously moved slightly to the right as viewed in FIG. Next, as shown in FIG. 10, as shown by an arrow a, one of the mounting jigs 5 of the mandrel M2 in a state where the winding is finished is held by the holding chuck 46R, and the mounting jig 5 is held until then. The chuck 6R that has been separated is separated as indicated by the arrow b.

  Further, the mandrels M1 and M2 are moved in the direction of the arrow c to move the mandrel M2 in the state where the winding is completed to the removal position. At the same time, one attachment jig 5 of the new mandrel M1 passes through the openings 33 and 40 of the hoop winding head 31 and the helical winding head 32. At this time, the delivery ring 51 can be transferred to the attachment jig 5 on the side of the new mandrel M1 by holding the delivery ring 51 in a non-movable position with a holder (not shown). That is, the winding start end of the fiber bundle R fed out from the heads 31 and 32 can be passed to the new mandrel M1 side.

  In the above state, the mandrel M2 in a state where the winding has been completed is taken out of the winding device and fed to the next heating step, and the plastic material impregnated in the fiber bundle R is cured. In parallel, as shown in FIG. 11, a new delivery ring 50 is externally fitted to the side end of the mounting jig 5 that has passed through the openings 33 and 40 of the heads 31 and 32. Further, after gripping the side end of the mounting jig 5 with the chuck 6L as shown by the arrow d, the chuck 46L for replacement is separated from the mounting jig 5 as shown by the arrow e, and the mandrel M2 is moved again in the direction of the arrow f. Then, the delivery rings 50 and 51 are made adjacent to the mouth portion 3.

  Thus, the preparation for winding the new mandrel M1 is completed. Thereafter, as shown in FIG. 12, the fiber bundle R is wound around the mandrel M1 with the hoop winding head 31 and the helical winding head 32 on the left side. A reinforcing layer is formed around M1. When the reinforcing layer is completed, the fiber bundle R is wound around the delivery ring 50, and the winding operation is completed. After that, as shown in FIG. 13, the fiber bundle R between the delivery rings 50 and 51 is cut with a cutter 53, so that the delivery ring 50 on the side that becomes the winding start end of the next new mandrel M1 becomes the mandrel M2. Detached from. Thereafter, by supplying the new mandrel M1 from the right mandrel group to the winding device and repeating the above procedure, a blank body of the pressure vessel can be continuously produced.

  In the filament winding apparatus of the present invention, as described above, the mounting jig 5 is configured by the holding body 10 and the shaft body 12 rotatably supported by the holding body 10. The mandrel M1 was rotatably supported. Furthermore, the mandrel M1 can be driven to rotate by driving the shaft body 12 of one mounting jig 5 with the power of the motor 15. Thus, if the mandrel M1 is rotatably supported on the mounting jig 5 side, it is not necessary to provide a bearing structure on the chuck 6 side, and the chuck 6 and its peripheral structure can be simplified.

  When holding the mandrel M1 with the chuck 6, as shown in FIG. 3, the chuck 6 is switched to the mounting posture by the air cylinder 23, and the chuck 5 is positioned between the pair of sandwiching bodies 21 and 22. This can be done simply by switching 6 to the holding posture. In other words, the mounting jig 5 is moved in and out of the opposing surfaces of the sandwiching bodies 21 and 22 along the radial direction of the shaft body 12, so that the mounting jig 5 is held by the chuck 6 as shown in FIG. It can be clamped or easily separated from the chuck 6. Further, as shown in FIG. 4, the passive gear 16 fixed to the shaft body 12 can be engaged with the driving gear 18 on the chuck 6 side. As a result, automatic replacement of the mandrel M1 is realized, and a winding product such as a pressure vessel can be efficiently manufactured.

  In the above embodiment, the helical winding head 32 and the two sets of hoop winding heads 31 are used to alternately load the two bundles of mandrels M1 into the winding device and wind the fiber bundle R. There is no. For example, a group of mandrels R can be sequentially loaded into a winding device to wind the fiber bundle R. Moreover, the holding body 10 does not need to be configured in a cylindrical shape, and the cross-sectional outer shape may be formed in a polygonal shape. The passive gear 16 can be disposed at the shaft end of the shaft portion 12a or at a portion adjacent to the large-diameter shaft portion of the shaft portion 12a. The passive gear 16 may be a bevel gear other than a spur gear or a helical gear. As the actuator 23, a hydraulic cylinder, a motor cylinder, a solenoid, or the like can be applied.

It is the front view of a mandrel, and the enlarged view of the principal part. It is a front view which shows the schematic relationship between a mandrel and a winding apparatus. It is a side view of a chuck | zipper. It is the sectional view on the AA line in FIG. It is the BB sectional view taken on the line in FIG. It is a side view which shows a helical winding head. It is a side view which shows a hoop winding head. It is explanatory drawing which shows the 1st process of the manufacturing process of a winding product. It is explanatory drawing which shows the 2nd process of the manufacturing process of a winding product. It is explanatory drawing which shows the 3rd process of the manufacturing process of a winding product. It is explanatory drawing which shows the 4th process of the manufacturing process of a winding product. It is explanatory drawing which shows the 5th process of the manufacturing process of a winding product. It is explanatory drawing which shows the last stage process of the manufacturing process of a winding product.

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 Mounting jig 6 Chuck 10 Holding body 12 Shaft body 16 Passive gear 18 Driving gear 21 (Upper) Holding body 22 (Lower) Holding body 31 Hoop winding head 32 Helical winding head M1 Mandrel R Fiber bundle

Claims (2)

Filament winding in which mounting jigs fixed to both ends in the axial direction of the mandrel are supported by a pair of chucks, and a motor for rotating the mandrel is arranged on the chuck supporting the one mounting jig. A device,
The mounting jig is composed of a holding body sandwiched and fixed by the chuck and a shaft body rotatably supported by the holding body, and the shaft body is fixed to the mandrel,
The chuck is composed of a pair of sandwiching bodies that sandwich and fix the holding body, and an actuator that performs an operation of contacting and separating at least one of the sandwiching bodies with respect to the other sandwiching body,
In the state where the chuck is switched to the mounting posture by an actuator, the mounting jig can be relatively taken in and out along the radial direction of the shaft body from between the opposing surfaces of both sandwiching bodies,
A driving gear for outputting motor power is provided on the clamping body of the chuck on the side where the motor is disposed, and meshes with the driving gear on the shaft body of the mounting jig on the side captured by the chuck. Filament winding device with passive gear fixed. Inside the holding body formed in a cylindrical shape, the shaft body, a rotary bearing body that supports the shaft body, and the passive gear are arranged,
The filament winding apparatus according to claim 1, wherein a gear opening that allows the driving gear to enter and exit is formed in a cylindrical wall of the holding body facing the passive gear.

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