JP5365228B2 - Three-dimensional fiber structure manufacturing equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable to perform the insertion work of a slip-off stopping yarn without hooking the loop portion of the last inserted slip-off stopping yarn. <P>SOLUTION: A needle 14 for inserting a slip-off stopping yarn inserts a slip-off stopping yarn P into a loop row of thickness direction yarns z in a returned state. The needle 14 for inserting the slip-off stopping yarn inserts the slip-off stopping yarn P in a state forming the first slip-off stopping yarn loop portion PL1 and the second slip-off stopping yarn loop portion PL2 on the side for leading the slip-off stopping yarn P in the loop row and on the side for pulling out the slip-off stopping yarn P from the loop row, respectively. The first yarn-handling device 15 has a yarn-handling lever 19 for separating the first slip-off stopping yarn loop portion PL1 from the insertion passage for the needle 14 for inserting the slip-off stopping yarn on the next slip-off stop yarn insertion. The second yarn-handling device 16 has a yarn-handling lever 23 for separating the second slip-off stopping yarn loop portion PL2 from the insertion passage for the needle 14 for inserting the slip-off stopping yarn on the next slip-off stop yarn insertion. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an apparatus for producing a three-dimensional fiber structure, and more specifically, a thickness direction yarn is inserted into a laminated yarn group in a direction perpendicular to each yarn layer in a folded shape, and the thickness direction yarn is prevented from coming off on the folded side. The present invention relates to an apparatus for manufacturing a three-dimensional fiber structure in which a yarn is inserted to join a group of laminated yarns.

  As a manufacturing apparatus for this type of three-dimensional fiber structure, a retaining thread is inserted into a folding loop of a thickness direction thread arranged in a folded shape in the laminated yarn group, thereby preventing the removal of the thickness direction thread from the laminated thread group. Some have been made (see, for example, Patent Document 1). In the manufacturing apparatus of Patent Document 1, as shown in FIG. 6, the laminated yarn group F formed on the frame body 62 in which the pins 61 are arranged at a predetermined pitch moves in a direction orthogonal to the thickness direction of the laminated yarn group F. It is held together with the frame 62 on a table 63 that is provided. A plurality of thickness direction thread insertion needles 65 arranged in a row on the needle support 64 are positioned so as to penetrate the laminated yarn group F until the needle hole 65a comes out of the laminated yarn group F, and in a standby state separated from the laminated yarn group F. The position is intermittently reciprocated by a driving device (not shown). The manufacturing apparatus includes a row of perforating needles 66 that form holes in the laminated yarn group F prior to the insertion of the thickness direction yarn inserting needle 65 into the laminated yarn group F, and a waiting state for the laminated yarn group F in the thickness direction yarn inserting needle 65. A press plate 67 that can be pressed from the position side, and press blocks 68 and 69 that press the laminated yarn group F from the side opposite to the press plate 67 are provided. In addition, the manufacturing apparatus includes a working position that penetrates the loop of the thickness direction thread z that is continuous with the needle hole 65a in a state where the thickness direction thread insertion needle 65 is inserted into the stacked thread group F, and a position that corresponds to the stacked thread group F. A retaining thread insertion needle 70 is provided so as to be able to reciprocate in the arrangement direction of the insertion needle row at the retracted standby position, and the retaining thread P is inserted into the loop of the thickness direction thread z.

  Insertion of the thickness direction yarn z into the laminated yarn group F is arranged in one row after holes are formed by the punch needle 66 in a state where the laminated yarn group F is pressed by the press plate 67 and the press blocks 68 and 69. The thickness direction thread insertion needle 65 is inserted into the laminated yarn group F together with the thickness direction thread z until the needle hole 65a comes out of the laminated yarn group. Then, when the thickness direction thread insertion needle 65 is slightly retracted from the maximum protruding position, a loop of the thickness direction thread z is formed on the distal end side of the thickness direction thread insertion needle 65. Next, after the retaining thread insertion needle 70 is reciprocated so as to pass through the loop and the retaining thread P is inserted along the loop of the thickness direction thread z, the thickness direction thread insertion needle 65 is pulled back. Thus, the thickness direction yarn z is inserted back into the laminated yarn group F, and the laminated yarn group F is tightened and the thickness direction yarn z is prevented from coming off. Then, these operations are repeated, and the thickness direction yarn z is inserted into a predetermined region of the laminated yarn group F in a folded shape.

  As shown in FIG. 7A, the retaining thread insertion needles 70 pass through the loops L of the respective thickness direction threads z one after another, and then continue to the retaining thread supply section (not shown). When the thread P is hooked by the hook portion 70a and returned to the standby position in the loop of the thickness direction yarn z, the hook portion 70b is pulled back in a closed state so that the loop L is not pulled. As shown in FIGS. 7B and 7C, the loop portion LP of the retaining thread P hooked to the retaining thread insertion needle 70 is inserted into the loop section LP of the retaining thread P previously inserted. It is arranged in the state that was done. The closed spatula 70b is opened before the thickness direction thread insertion needle 65 is inserted into the laminated thread group F and the retaining thread insertion needle 70 is inserted into the loop of the thickness direction thread z. Then, the retaining thread insertion needle 70 moves to the retaining thread supply section side with the spatula 70b opened. In addition, illustration of the spatula 70b is abbreviate | omitted in FIG.7 (b), (c).

JP-A-8-218249

  In the prior art, the loop part LP of the retaining thread P that is hooked on the retaining thread insertion needle 70 cannot be successfully inserted into the loop part LP of the retaining thread P that was previously inserted. For example, as shown in FIG. 8, both the loop portion LP of the retaining thread P into which the hook portion 70a was inserted last time and the loop portion LP of the retaining thread P inserted this time are caught, and the retaining thread P A state where the insertion is not performed smoothly occurs.

  The present invention has been made in view of the above-described conventional problems, and the object thereof is a three-dimensional fiber capable of performing a retaining thread insertion operation without being caught by a loop section of a retaining thread that was previously inserted. It is to provide an apparatus for manufacturing a tissue.

In order to achieve the above object, according to the first aspect of the present invention, a thickness direction yarn is inserted in a folded shape in a direction perpendicular to each yarn layer into a laminated yarn group formed by laminating a plurality of yarn layers. At the same time, the three-dimensional fiber structure manufacturing apparatus joins the laminated yarn group by inserting a retaining yarn on the folded side of the thickness direction yarn. A standby position that is provided so as to be reciprocally movable along the thickness direction of the laminated yarn group held by the frame, and is incapable of engaging with the laminated yarn group; and a needle hole that is in the standby position with respect to the laminated yarn group A thickness direction thread insertion needle that is moved to an operating position penetrating so as to be on the opposite side, and a tip of the thickness direction thread insertion needle when the thickness direction thread insertion needle is disposed at the operating position The thread in the thickness direction is looped back to the forward position passing through the loop row of the thickness direction yarn formed on the side and the standby position retracted from the loop row, and the loop of the thickness direction yarn is folded back A retaining thread insertion for inserting a second retaining thread loop portion on the pulling-in side of the retaining thread into the row and a first retaining thread loop portion on the pulling side from the loop array. With a needle. A first threading device having a threading member for moving the first retaining thread loop portion away from a threading path for retaining the retaining thread at the time of insertion of the next retaining thread; And a second threading device having a threading member that moves the thread loop portion away from the threading path of the retaining thread insertion needle at the time of inserting the retaining thread.

In this invention, the thickness direction yarn is inserted into the laminated yarn group in a folded manner by the thickness direction yarn insertion needle. The retaining thread for retaining the thread in the thickness direction is a state in which the thickness direction thread insertion needle penetrates the laminated thread group and a loop row of the thickness direction thread is formed on the tip side of the thickness direction thread insertion needle. Then, it is inserted in a folded manner by a retaining thread insertion needle that reciprocates through the loop row. Lock yarn, the second retaining thread loop portion is formed on pull end of the thickness direction thread loop row of a first retaining drawer-side end of the loop row of thickness direction thread omission A thread loop portion is formed. Since the first and second retaining thread loop portions are moved away from the thread passage of the retaining thread insertion needle by the threading members of the first and second threading devices, respectively, the first and second retaining threads The thread loop does not interfere with the thread insertion work. Therefore, the retaining thread insertion needle can perform the retaining thread insertion operation without being caught by the loop section of the retaining thread previously inserted.

  According to a second aspect of the present invention, in the first aspect of the first aspect of the present invention, the threading member of the first threading device is configured so that the retaining thread insertion needle is disposed at a standby position. It moves so that the said 1st retaining thread loop part may be removed from the hook part of the retaining thread insertion needle.

  The retaining thread is hooked to the hook portion of the retaining thread insertion needle and is inserted into the loop row of the thickness direction thread. In this invention, the retaining thread insertion needle attaches the retaining thread to the hook section. In a state where it is hooked and returned to the standby position, the first retaining thread loop part is removed from the hook part by the movement of the threading member of the first threading device. Therefore, the first retaining thread loop portion is simply arranged at a position where it will not hinder the next retaining thread insertion operation.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the threading member is movable while sandwiching the retaining thread loop portion with the frame body. Therefore, the configuration of the threading device is simplified as compared with the configuration in which the threading member is moved by holding the retaining thread loop portion alone.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the stringing member of the second stringing device includes at least the retaining thread insertion needle. While the retaining thread is drawn into the loop line of the thickness direction thread, the second retaining thread loop portion is gripped together with the frame body. Therefore, when the retaining thread insertion needle pulls the retaining thread into the loop line of the thickness direction thread, the previously inserted thickness direction thread located at the end of the retaining thread supply section side is caused by the retaining thread. The problem of being pulled strongly can be prevented.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing apparatus of the three-dimensional fiber structure | tissue which can perform the insertion operation | work of a retaining thread without being caught in the loop part of the retaining thread inserted previously is provided.

The schematic perspective view of the manufacturing apparatus of a three-dimensional fiber structure. The model perspective view of the 1st stringing device. The schematic diagram which shows the moving direction of a threading lever. (A) is a schematic cross-sectional view of a state in which a thickness direction thread insertion needle is inserted into a laminated yarn group to form a loop line of thickness direction threads, and (b) is a retaining thread insertion needle disposed at a forward position. (C) is a schematic cross-sectional view in a state in which a retaining thread is inserted through the loop row, and (d) is a schematic cross-sectional view in a state in which the threading lever is moved to a press release position. (A) shows the position of the double threading lever in a state where the double threading lever is disposed at a position corresponding to the threading path of the retaining thread insertion needle and at a position where the pressing of the both retaining thread loop part is released. The schematic diagram which looked at the laminated yarn group shown from the retaining thread side, (b) is a schematic diagram which shows the position of the double threading lever at the start of advancement of the retaining thread insertion needle, (c) is the retaining thread insertion needle FIG. 4D is a schematic diagram in a state in which is disposed at an advance completion position, and FIG. 4D is a schematic diagram in a state in which a retaining thread insertion needle has returned to a standby position. The schematic perspective view of the manufacturing apparatus of the three-dimensional fiber structure | tissue of a prior art. (A) is a schematic diagram of a state in which a retaining thread is inserted through a loop of a thickness direction thread, (b) and (c) are a thread in a thickness direction, a retaining thread, a loop of a thickness direction thread, and a retaining thread. The schematic diagram which shows the relationship of a loop part. The schematic diagram which shows the state in which the last retaining thread loop part and this retaining thread loop part are hooked on a hook part.

Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS.
As shown in FIG. 1, the manufacturing apparatus 11 for a three-dimensional fiber structure has a horizontal direction in the thickness direction of the laminated yarn group F held on a frame 13 in which pins 12 as regulating members are arranged at a predetermined pitch. The thickness direction yarns z are simultaneously inserted one by one along the width direction (vertical direction in FIG. 1) of the laminated yarn group F. The manufacturing apparatus 11 is basically configured in the same manner as the manufacturing apparatus described in Patent Document 1, but uses a retaining thread insertion needle 14 having a hook part 14a without a spatula, This is largely different from the point that the first threading device 15 and the second threading device 16 for winding the retaining thread P are provided. A part of the same part as the manufacturing apparatus described in Patent Document 1 is not shown and described. A fiber bundle of carbon fibers is used as the yarn constituting the laminated yarn group F, the thickness direction yarn z, and the retaining yarn P.

  The plurality of thickness direction thread insertion needles 17 are simultaneously reciprocated along the thickness direction of the laminated yarn group F while being arranged in a line parallel to the width direction of the laminated yarn group F held by the frame 13. It is provided as possible. The laminated yarn group F is intermittently moved together with the frame 13 by the insertion pitch of the thickness direction yarn in the direction orthogonal to the moving direction of the thickness direction yarn insertion needle 17, and the position where the thickness direction yarn z is to be inserted is determined. The thickness direction thread z is inserted by the thickness direction thread insertion needle 17 in a state of being disposed so as to face the tip of the thickness direction thread insertion needle 17. The thickness direction thread insertion needle 17 penetrates so that the standby position where it cannot be engaged with the laminated yarn group F and the needle hole 17a is on the opposite side of the standby position with respect to the laminated yarn group F, and the thickness direction thread is inserted on the tip side. It is moved to the working position where the z loop is formed.

  The retaining thread insertion needle 14 has a loop L of the thickness direction thread z formed on the tip side of each thickness direction thread insertion needle 17 when the thickness direction thread insertion needle 17 is disposed at the operating position. Are provided so as to be movable and arranged at a forward position passing through the loop row 18 (shown in FIGS. 4 and 5) and a standby position retracted from the loop row 18. In this embodiment, the retaining thread insertion needle 14 is disposed so that the standby position is above the frame body 13 and the advance position is below the frame body 13, and when retracting from the advance position to the standby position, A retaining thread P connected to a retaining thread supply section (not shown) is hooked on the hook portion 14 a, and the retaining thread P is pulled into the loop row 18 as it moves backward. The retaining thread P has a first retaining thread loop portion PL1 formed on the drawing side of the thickness direction thread z from the loop row 18 (the waiting position side of the retaining thread insertion needle 14), and the thickness direction thread z Is inserted into the loop row 18 so that the second retaining thread loop portion PL2 is formed on the pull-in side (the side opposite to the standby position side of the retaining thread insertion needle 14).

  The first threading device 15 is disposed on the standby position side of the retaining thread insertion needle 14 on the holding side of the laminated yarn group F with respect to the frame body 13. The first threading device 15 is a threading lever as a threading member that acts to move the first retaining thread loop portion PL1 away from the threading path of the retaining thread insertion needle 14 during the next retaining thread insertion. 19 The threading lever 19 moves so as to remove the first retaining thread loop part PL1 from the hook part 14a of the retaining thread insertion needle 14 in a state where the retaining thread insertion needle 14 is disposed at the standby position. In addition, the first retaining thread loop portion PL1 removed from the hook portion 14a is configured to be movable while being sandwiched between the frame body 13.

  More specifically, the threading lever 19 moves to a pressing position where the tip thereof presses the first retaining thread loop portion PL1 against the frame body 13 and a press releasing position where the pressing is released, and the tip thereof is the first. An operation of moving horizontally in parallel with the front surface 13a (the surface on the side on which the laminated yarn group F is held) of the frame 13 pressing the one retaining yarn loop portion PL1 is performed. The first threading device 15 includes a first driving means 20 and a second driving means 21 for driving the threading lever 19, and the first driving means 20 and the second driving means 21 are respectively guides. It consists of an air cylinder with a rod.

  As shown in FIGS. 1 and 2, the first driving means 20 includes a main body 20 a provided with an air cylinder, and a moving body 20 b that is reciprocated together with the guide rod, and the moving body 20 b has a thickness of the laminated yarn group F. The main body 20a is fixed to a frame (not shown) so that it can reciprocate in the vertical direction. In the second driving means 21, a main body 21 a having an air cylinder is fixed on the moving body 20 b of the first driving means 20. The second driving means 21 is fixed so that the moving body 21b reciprocated together with the guide rod can reciprocate in the direction orthogonal to the moving direction of the moving body 20b of the first driving means 20. The threading lever 19 is formed in a substantially L-shaped plane, and its tip 19a is formed in parallel with the front surface 13a of the frame 13 and extends horizontally.

  The threading lever 19 is made of, for example, an aluminum-based metal in order to ensure a light weight and necessary strength. An aluminum-based metal means aluminum or an aluminum alloy. Since the frame 13 is also formed of an aluminum-based metal, when the threading lever 19 moves in a state where the first retaining thread loop portion PL1 is pressed against the frame 13, the first retaining thread loop portion. In order to prevent the PL1 from being damaged, a rubber covering portion 22 is formed at the tip 19a of the threading lever 19. The covering portion 22 is formed so as to cover an end surface and a lower surface of the tip portion 19a of the threading lever 19 that face the frame body 13.

  The second threading device 16 is disposed on the advance side of the retaining thread insertion needle 14 on the holding side of the laminated thread group F with respect to the frame 13. The second threading device 16 has a threading lever 23 as a threading member for winding the second retaining thread loop part PL2. When the retaining thread insertion needle 14 moves to the forward position and the retaining thread P connected to the retaining thread supply section is hooked by the hook portion 14a and pulled into the loop row 18, the threading lever 23 is The retaining thread loop portion PL2 of 2 is moved away from the threading path of the retaining thread insertion needle 14. Further, the threading lever 23 is configured so that the second retaining thread loop portion PL2 is connected to the frame body 13 at least while the retaining thread insertion needle 14 pulls the retaining thread P into the loop row 18 of the thickness direction thread z. The joint action is done.

  The second threading device 16 is configured in the same manner as the first threading device 15 except for the state of the covering portion 22 formed at the tip 23a of the threading lever 23. The covering portion 22 is formed so as to cover an end surface and an upper surface of the tip portion 23 a of the threading lever 23 that face the frame 13. The second threading device 16 uses the first driving means 20 to move the threading lever 23 between a pressing position where the tip 23a presses the frame body 13 and a pressure releasing position where the pressing is released. The means 21 horizontally moves the threading lever 23 so that the tip 23 a is parallel to the surface of the frame 13.

  The first threading device 15 and the second threading device 16 are driven and controlled by a control device (not shown), and the threading levers 19 and 23 are operated in association with the movement timing of the retaining thread insertion needle 14. I do. 3 schematically shows the movement of the tip portions 19a and 23a of the threading levers 19 and 23. As shown in FIG. That is, the tip portions 19a and 23a are respectively provided with a pressing position for pressing the first and second retaining thread loop portions PL1 and PL2 against the frame body 13, a pressing release position for releasing the pressing, and the current retaining thread insertion. As shown in FIG. 3, the position is moved between a position corresponding to the threading path of the retaining thread insertion needle 14 during the operation and a retracted position retracted from the threading path. In FIG. 3, at the position corresponding to the threading path of the retaining thread insertion needle 14 at the time of the current retaining thread insertion operation, the first and second retaining thread loop portions PL1, PL2 are released from being pressed. Is the original position. Further, M1 of the arrow is a forward movement from the original position to the pressing position corresponding to the original position, M2 is a sliding movement from the pressing position corresponding to the original position to the retracted position, and M3 is a pressure release corresponding to the retracted position from the retracted position. The backward movement to the position, M4, indicates the movement from the pressing release position corresponding to the retracted position to the original position. The movement of M1 and M3 is performed by driving the first driving means 20, and the movement of M2 and M4 is performed by driving the second driving means 21.

  Next, the manufacturing method of the three-dimensional fiber structure by the manufacturing apparatus 11 configured as described above will be described. The laminated yarn group F having a biaxial orientation formed by laminating a plurality of yarn layers on the frame 13 is held by a holding device (not shown) together with the frame 13, and the moving direction of the thickness direction thread insertion needle 17 is moved. Is inserted into the laminated yarn group F in a state where it is arranged at a position orthogonal to. The holding device is intermittently moved by a feeding device (not shown) so that the portions where the thickness direction yarns z of the laminated yarn group F are to be inserted sequentially face the rows of the thickness direction yarn insertion needles 17 one by one. The threading levers 19 and 23 are held in a state in which the distal end portions 19a and 23a are arranged at the pressing release positions at least while the frame 13 is moved together with the holding device.

  After a hole is formed with a piercing needle at a position where the thickness direction thread z of the layered yarn group F is to be inserted, the layered yarn group F is moved together with the frame 13 so that the hole faces the thickness direction thread insertion needle 17. The Next, after the thickness direction thread insertion needle 17 is moved forward to be inserted into the laminated yarn group F together with the thickness direction thread z so that the needle hole 17a protrudes to the opposite side of the laminated yarn group F, it is slightly returned. As shown in FIG. 4A, the loop L of the thickness direction yarn z is formed in one row on the protruding side of the needle hole 17a of the laminated yarn group F, and the loop row 18 is formed.

  After a hole is formed with a piercing needle at a position where the thickness direction thread z of the layered yarn group F is to be inserted, the layered yarn group F is moved together with the frame 13 so that the hole faces the thickness direction thread insertion needle 17. In this state, the double threading levers 19 and 23 are at positions corresponding to the threading path of the retaining thread insertion needle 14 and the pressures of the retaining thread loop portions PL1 and PL2 are released as shown in FIG. It is in the state shown.

  After the frame 13 is moved, the first driving means 20 of the first yarn winding device 15 is driven until the loop row 18 is formed on the protruding side of the needle hole 17a of the laminated yarn group F, and the yarn winding lever is driven. 19 is disposed at a pressing position for pressing the first retaining thread loop portion PL1 formed in the previous thickness direction thread insertion work cycle against the frame body 13 (movement of M1). At this time, the first retaining thread loop portion PL1 that has been hooked on the hook portion 14a is removed from the hook portion 14a by the threading lever 19. Then, after the tip 19a of the threading lever 19 presses and grips the first retaining thread loop part PL1 with the frame 13, the second driving means 21 of the first threading device 15 is driven, and the thread The winding lever 19 is moved in a state where the first retaining thread loop portion PL1 is gripped by the frame body 13 (movement of M2). As a result, the first retaining thread loop portion PL1 formed in the previous thickness direction thread insertion work cycle is moved away from the threading path of the retaining thread insertion needle 14, and the state shown in FIG. become. In addition, before the threading lever 19 presses the first retaining thread loop portion PL1, the retaining thread insertion needle 14 slightly moves the first retaining thread loop portion PL1 on which the hook portion 14a is engaged. It is preferable to move forward (lower) so as to relax.

  Further, the first driving means 20 of the second threading device 16 is also driven simultaneously with the first threading device 15, and the threading lever 23 is also formed in the previous cycle in the thickness direction thread insertion operation. It arrange | positions in the press position which presses the 2nd retaining thread loop part PL2 to the frame 13 (movement of M1). After that, the second driving means 21 is driven simultaneously with the second driving means 21 of the first yarn winding device 15, and the second retaining thread loop formed in the previous thickness direction thread insertion work cycle. The part PL2 is moved away from the threading path of the retaining thread insertion needle 14 (movement of M2). As a result, the second retaining thread loop portion PL2 formed in the previous thickness direction thread insertion work cycle is also moved away from the threading path of the retaining thread insertion needle 14, and the state shown in FIG. become.

  Next, the retaining thread insertion needle 14 is moved forward from the standby position, and the retaining thread insertion needle 14 is a loop array 18 composed of the respective loops L as shown in FIGS. 4 (b) and 5 (c). , And the hook portion 14a is arranged at a forward position where the retaining thread P connected to a retaining thread supply section (not shown) can be hooked.

  Next, retraction of the retaining thread insertion needle 14 is started, and as shown in FIGS. 4 (c) and 5 (d), the retaining thread P is arranged in the loop direction 18 in the arrangement direction of the thickness direction thread inserting needles 17. It will be in the state inserted along.

  Next, the thickness direction thread insertion needle 17 is retracted to the standby position, the thickness direction thread z is pulled back, the thickness direction thread z is retained by the retaining thread P, and the laminated thread group F is tightened. . Thereafter, the first driving means 20 of the first and second threading devices 15 and 16 are driven, and the threading levers 19 and 23 are moved to the pressing release position (movement of M3). The state shown in 4 (d) is obtained. After the threading levers 19 and 23 are moved to the pressing release position, the second driving means 21 of the first threading device 15 and the second threading device 16 is driven, and the threading levers 19 and 23 are moved. The retaining thread P inserted this time is moved to a position facing the first retaining thread loop part PL1 and the second retaining thread loop part PL2 (movement of M4). Thus, one cycle of the thickness direction thread insertion operation is completed. Thereafter, the movement of the laminated yarn group F and the insertion operation of the thickness direction yarn are repeated to produce a three-dimensional fiber structure. For the convenience of illustration, the insertion pitch of the thickness direction yarn z is illustrated differently in FIG. 5 and FIG.

According to this embodiment, the following effects can be obtained.
(1) The three-dimensional fiber structure manufacturing apparatus 11 includes a plurality of thickness direction thread insertion needles 17 that are moved in a line along the thickness direction of the layered yarn group F held on the frame 13, and A thickness direction thread z is inserted into F in a folded shape. The retaining thread insertion needle 14 is formed by folding back the retaining thread P on the loop line 18 of the thickness direction thread z formed on the distal end side of the thickness direction thread inserting needle 17 and connecting the loop direction thread 18 to the loop line 18. lock yarn loop portion PL 2 second exit to inlet side of the lock yarn P is inserted into the state in which the first lock yarn loop portion PL 1 is formed on the pulling side of the loop rows 18. Then, the manufacturing apparatus 11 includes a first threading device 15 having a threading lever 19 that moves the first retaining thread loop portion PL1 away from the threading path of the retaining thread insertion needle 14 when the next retaining thread is inserted. And a second threading device 16 having a threading lever 23 that moves the second retaining thread loop part PL2 away from the threading path of the retaining thread insertion needle 14 at the time of the next retaining thread insertion. Therefore, when the retaining thread insertion needle 14 enters the loop array 18 from the standby position or when the retaining thread P is pulled out from the loop array 18, the hook portion 14 a is formed at the previous insertion of the retaining thread P. It is avoided that the first retaining thread loop portion PL1 and the second retaining thread loop portion PL2 are hooked. As a result, the work for inserting the retaining thread P is performed without any trouble.

  (2) The threading lever 19 of the first threading device 15 and the threading lever 23 of the second threading device 16 are respectively connected to the frame 13 with the first retaining thread loop portion PL1 or the second threading lever 23. It is possible to move while holding (holding) the retaining thread loop portion PL2. Therefore, the configuration of the threading device is compared with the configuration in which the threading levers 19 and 23 are moved by holding (gripping) the first retaining thread loop portion PL1 or the second retaining thread loop portion PL2 alone. Becomes easier.

  (3) The threading lever 19 of the first threading device 15 is moved from the hook portion 14a of the retaining thread insertion needle 14 with the retaining thread insertion needle 14 placed in the standby position. Move so as to remove the retaining loop portion PL1. Therefore, the first retaining thread loop portion PL1 is easily disposed at a position where it will not hinder the next retaining thread P insertion operation.

  (4) The threading lever 23 of the second threading device 16 is a second retaining member at least while the retaining thread insertion needle 14 pulls the retaining thread P into the loop row 18 of the thickness direction thread z. The yarn loop portion PL2 is held together with the frame body 13. Therefore, when the retaining thread insertion needle 14 pulls the retaining thread P into the loop line 18 of the thickness direction thread z, the previously inserted thickness direction thread z located at the end on the retaining thread supply section side is inserted. Can be prevented from being strongly pulled by the retaining thread P.

  (5) The first threading device 15 and the second threading device 16 are configured by the first driving means 20 and the second driving means 21 configured by an air cylinder with a guide rod, so that the threading levers 19, 23 are driven. Is moved in a direction perpendicular to the front surface 13a of the frame body 13 and in a direction parallel to the front surface 13a, the threading levers 19 and 23 can be moved to desired positions with a simple configuration.

  (6) A rubber covering portion 22 is formed at the tip 19a of the threading levers 19 and 23. The threading levers 19 and 23 are made of, for example, aluminum metal and the frame 13 is also formed of metal in order to secure the required strength with a light weight. If the yarn loop part PL1 and the second retaining thread loop part PL2 are moved while being pressed directly against the frame 13, the first and second retaining thread loop parts PL1, PL2 are damaged. However, since the rubber covering portions 22 are formed at the tip portions 19a and 23a, the first and second retaining yarns can be used even when a fiber bundle of carbon fibers that are easily damaged is used as the retaining yarn P. It is possible to prevent the loop portions PL1 and PL2 from being damaged.

The embodiment is not limited to the above, and may be configured as follows, for example.
The first threading device 15 moves the first retaining thread loop portion PL1 formed at the previous retaining thread insertion from the threading path of the retaining thread insertion needle 14 at the current retaining thread insertion. It is only necessary to have the threading lever 19, and the threading lever 19 is not limited to the configuration in which the first retaining thread loop portion PL <b> 1 is sandwiched between the frame body 13 and separated. For example, the threading lever 19 may be provided with a gripping part for gripping the first retaining thread loop part PL1 or a latching part for latching. Further, the second threading device 16 is not limited to the structure in which the threading lever 23 is spaced apart from the second retaining thread loop portion PL2 between the frame 13 and the second threading lever 23 has a second retaining mechanism. A gripping part for gripping the thread loop part PL2 or a latching part for latching may be provided.

  The threading levers 19 and 23 are provided with the first and second retaining thread loop portions PL1 and PL2 formed at the previous retaining thread insertion, when the retaining thread is inserted this time. What is necessary is just to hold | maintain in the position away from the threading path | route of the needle | hook 14 for thread | yarn retaining thread | yarn insertion so that there may be no trouble at the time of forward and backward movement, and the movement time is not restricted to the time of embodiment. For example, without moving the threading levers 19 and 23 at the same time, the threading lever 23 is moved to the second position until the hook portion 14a protrudes from the loop row 18 after the retaining thread insertion needle 14 starts moving forward. The retaining thread loop portion PL2 may be moved to a position away from the threading path of the retaining thread insertion needle 14.

  The first and second threading devices 15, 16 move the threading levers 19, 23 to the pressing release position by the first driving means 20, and then the threading levers 19, 23 by the second driving means 21. When the first movement unit 20 is driven, the second driving unit 21 may start to be driven while the first driving unit 20 is driven. In this case, the movement time of the threading levers 19 and 23 to the target position can be shortened.

  The first and second threading devices 15 and 16 are not limited to the configuration driven by the first driving means 20 and the second driving means 21 that perform reciprocating linear driving of the threading levers 19 and 23, for example, It is good also as a structure which drives the threading levers 19 and 23 by rotation operation | movement or the combination of rotation operation and linear motion operation.

  The threading levers 19 and 23 do not necessarily have the rubber covering portions 22 formed on the tip portions 19a and 23a. For example, when one of the threading levers 19 and 23 and the frame 13 is made of resin instead of metal, or the retaining thread P is less likely to be damaged than carbon fiber, the covering portion 22 is omitted. May be.

  The first drive means 20 and the second drive means 21 may be replaced with an air cylinder with a guide rod, and an actuator with a guide rod in which the moving bodies 20b and 21b are driven via a ball screw mechanism may be used. Further, an air cylinder or an electric cylinder without a guide rod may be used.

  ○ The retaining thread insertion needle 14 is not limited to the structure in which the retaining thread P is pulled up and inserted into the loop row 18 of the thickness direction thread z, but the retaining thread P is pulled down to the thickness direction thread z. It may be configured to be inserted through the loop row 18.

  The manufacturing apparatus 11 is not limited to the configuration in which the thickness direction thread insertion needle 17 is reciprocated in the horizontal direction to perform the thickness direction thread insertion operation into the stacked thread group F, but the stacked thread group F is disposed horizontally to be thick. The directional thread insertion needle 17 may be configured to reciprocate in the vertical direction.

  ○ The laminated yarn group F, the thickness direction yarn z and the retaining yarn P are not limited to fiber bundles made of carbon fibers, but include, for example, aramid fibers, BPO fibers (polyparaphenylene benzobisoxamine fibers), ultrahigh molecular weight polyethylene fibers Alternatively, it may be made of an organic fiber having high strength and high elasticity.

The following technical idea (invention) can be understood from the embodiment.
(1) Thickness direction yarns are inserted into a laminated yarn group formed by laminating a plurality of yarn layers in a direction perpendicular to each yarn layer by a thickness direction yarn insertion needle, and the thickness direction yarns are A three-dimensional fiber structure manufacturing method in which a retaining thread is inserted into a loop row on the folded side of the folded yarn to join the laminated yarn group, the thickness direction yarn inserting needle being inserted into the laminated yarn group and the thickness direction Forming a loop row of thread in the thickness direction on the tip side of the yarn insertion needle, and reciprocating the retaining yarn insertion needle so as to penetrate the loop row, so that the retaining yarn is folded back and the thickness A second retaining thread loop portion is inserted on the pull-in side of the retaining thread into the loop row of longitudinal threads, and a first retaining thread loop portion is formed on the withdrawal side from the loop array. The first retaining thread loop portion and the step Method for producing a three-dimensional fiber structure for the lock yarn insertion needle 2 of the retaining threads loop portion in a state where away from threading path of the lock yarn insertion needle exits at the next lock yarn insertion is reciprocated.

  F ... Laminated yarn group, P ... Retaining thread, z ... Thickness direction thread, PL1 ... 1st retaining thread loop part, PL2 ... 2nd retaining thread loop part, 11 ... Manufacturing apparatus, 13 ... Frame, DESCRIPTION OF SYMBOLS 14 ... Retaining thread insertion needle, 14a ... Hook part, 15 ... 1st threading device, 16 ... 2nd threading device, 17 ... Thickness direction thread insertion needle, 17a ... Needle hole, 18 ... Loop row , 19, 23... A threading lever as a threading member.

Claims (4)

A multi-layered yarn group formed by laminating a plurality of yarn layers is inserted with a thickness direction yarn folded in a direction perpendicular to each yarn layer, and a retaining yarn is inserted on the folding side of the thickness direction yarn. An apparatus for producing a three-dimensional fiber structure for joining the laminated yarn group,
A standby position that is provided so as to be reciprocally movable along the thickness direction of the laminated yarn group held by the frame and is incapable of engaging with the laminated yarn group, and a needle hole opposite to the standby position with respect to the laminated yarn group A thickness direction thread insertion needle that is moved to a working position that penetrates to the side,
A forward position passing through the loop row of thickness direction threads formed on the tip side of the thickness direction thread insertion needle when the thickness direction thread insertion needle is disposed at the working position, and retreating from the loop row And a second retaining thread loop portion on the side where the retaining thread is pulled into the loop line of the thickness direction thread. A retaining thread insertion needle that is inserted into a state in which the first retaining thread loop portion is formed on the drawing side from
A first threading device having a threading member that moves the first retaining thread loop portion away from a threading path of a retaining thread insertion needle when the next retaining thread is inserted;
A three-dimensional fiber structure comprising a second threading device having a threading member that moves the second retaining thread loop portion away from a threading path of a retaining thread insertion needle when the next retaining thread is inserted. manufacturing device.   The threading member of the first threading device has the first retaining thread loop from a hook portion of the retaining thread insertion needle in a state where the retaining thread insertion needle is disposed at a standby position. The apparatus for producing a three-dimensional fiber structure according to claim 1, wherein the apparatus moves so as to remove the part.   3. The three-dimensional fiber structure manufacturing apparatus according to claim 1, wherein each of the stringing members is movable while sandwiching the retaining thread loop portion with the frame body.   The threading member of the second threading device includes at least the second retaining thread loop portion while the retaining thread insertion needle pulls the retaining thread into the thickness direction thread loop row. The manufacturing apparatus of the three-dimensional fiber structure as described in any one of Claims 1-3 which hold | grips in cooperation with the said frame.

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