JP4492595B2 - Braiding career - Google Patents

Description

  The present invention mounts a bobbin on which a plurality of yarns or fiber bundles (hereinafter simply referred to as yarns) are wound around a mandrel to form various compositions, and each of which is wound with a bobbin. In particular, the present invention relates to a braiding carrier suitable for a braider that supplies a yarn while applying an appropriate tension.

  Recently, various fiber reinforced composite materials such as pipes and shafts have been manufactured with fiber reinforced plastics (FRP) made of high-strength yarns such as glass fiber, carbon fiber or nylon fiber. Yes. In addition, a braider is known in which these fiber-reinforced composite materials are manufactured by automatically forming a yarn-like (prepreg yarn) impregnated with a resin into a braid.

  The braider is a composition having a composition comprising a plurality of threads interlaced around a mandrel having various shapes such as a cylindrical shape, a T-shape, an I-shape, and a tetrapot shape. Thus, the bobbin carrier on which the bobbin around which the yarn is wound is placed is made to travel along the track to form the composition.

  When a composition is formed by crossing a large number of yarns, if the yarn tension varies, the yarn does not form a uniform group, and some yarns are lifted, conversely tightened, and fluff is generated. Malfunctions may occur.

  There is also a problem that it is difficult to change the spring hook when changing the tension by changing the mechanism.

  To that end, a braider has already filed an application where a mandrel is placed inside a track formed in a curved upper plate on which a bobbin carrier is placed, and an appropriate composition is obtained without applying excessive tension to the drawn yarn. (For example, refer to Patent Document 1).

Further, a bobbin carrier for a braider, which has a yarn slack eliminating function in which a slack eliminating roller is provided between two free rollers, has already been filed (for example, see Patent Document 2).
JP-A-6-294054 (page 1-10, FIG. 2) JP 7-207556 A (page 1-4, FIG. 1)

  In order to adjust the tension applied to the yarn when the yarn is pulled out from the bobbin mounted on the bobbin carrier, a method of applying a frictional force to the rotation of the bobbin is generally employed.

  However, as a method of applying a frictional force to the rotation of the bobbin, when a rubber plate or the like is pressed against the outer periphery of the bobbin flange, the winding diameter changes when the amount of yarn wound on the bobbin changes, and is added to the yarn drawn from the bobbin. The tension is changed. Further, in a braider equipped with a large number of bobbin carriers, the frictional force on the outer periphery of each bobbin flange varies due to scratches, eccentricity, and the like, and it is difficult to align the tensions of all the yarns.

  In addition, when changing the tension applied to the yarn, for example, when changing the yarn, it is necessary to adjust the pressing force of the rubber plates of all bobbin carriers.

  An object of the present invention is to provide a braiding carrier that is mounted on a braider for braiding a large number of yarns and holds a bobbin around which the respective yarns are wound and feeds the yarns in order to solve the above problems. It is an object of the present invention to provide a braiding carrier capable of easily aligning the tension of the yarn drawn from the bobbin and easily changing the tension level with a simple operation.

  In order to achieve the above-mentioned object, the invention according to claim 1 is equipped with a bobbin around which a yarn is wound, which is mounted on a braider that braids a large number of yarns to form a tubular assembly. A braiding carrier that feeds out the strip, and a slack removing roller that applies a predetermined tension to the yarn wound and wound in order to adjust the tension of the yarn drawn out from the bobbin; A ratchet mechanism that intermittently rotates the bobbin in conjunction with the movement of the slack eliminating roller, a coil spring that applies a biasing force that resists swinging of the slack eliminating roller, and a biasing force to the slack eliminating roller in stages. An urging force adjusting means that can be changed is provided.

  According to the first aspect of the invention having the above-described configuration, a predetermined tension can be stably applied to the yarn drawn out from the bobbin by the slack eliminating roller and the ratchet mechanism. Furthermore, it can be adjusted by changing to a predetermined tension via the biasing force adjusting means.

  According to a second aspect of the present invention, the biasing force adjusting means includes a first arm that rotates in conjunction with swinging of the slack eliminating roller, a second arm that is a transmission arm, and a third arm that includes the coil spring. A link mechanism that includes an arm in order and transmits a swinging change of the slack eliminating roller to the amount of displacement of the coil spring, and an arm length changing mechanism that allows the length of the first arm to be changed in multiple stages. It is characterized by that.

  According to the invention which concerns on Claim 2 which has said structure, it becomes possible to adjust the tension level of a thread | yarn in several steps by changing the arm length of a 1st arm in several steps, and according to the intensity | strength of a yarn. The desired tension can be set.

  According to a third aspect of the present invention, the first arm includes a fixed arm at a shaft base portion and a swing arm that is rotatably connected to the fixed arm via a shaft support portion. When connecting the second arm to the end, the free end is rotated outward from the shaft support portion to form a long first arm, and the inner end is rotated from the shaft support portion to be short. A sector gear is provided that is displaceable in two steps to a short position that forms the first arm, and that is adjacent to the first arm and meshes with a circular gear provided on the shaft support portion of the slack eliminating roller. The side of the swing arm is in contact with one side of the fixed arm and the side of the swing arm, and the free end of the swing arm is rotated in a direction away from the one side of the sector gear, so that the long position and the short length It is characterized in that it can freely rotate to a position.

  According to the invention according to claim 3 having the above-described configuration, it is possible to change and set the predetermined tension level by simply changing the swing arm constituting the first arm to the long position and the short position. it can.

  The invention according to claim 4 is characterized in that the ratchet mechanism includes a ratchet gear provided in a bobbin mounting portion on which the bobbin is mounted, a ratchet hook having a hook portion engaged with the ratchet gear, and the swinging slack removing roller. A ratchet releasing member that separates the hook portion from the ratchet gear in conjunction with movement is provided.

  According to the invention of claim 4 having the above-described configuration, the ratchet hook is separated from the ratchet gear in conjunction with the movement of the slack eliminating roller, so that the yarn is always fed out when the slack eliminating roller is in a predetermined position, and The feeding is stopped, and a ratchet mechanism can be obtained in which the yarn is neither pulled too much nor slackened.

  According to a fifth aspect of the present invention, the ratchet hook has a hook portion that engages with the ratchet gear via a holding spring member on one end side, and a bearing member is rotatably mounted on the other end side. When the slack-removing roller that is pivotally supported and is rotatable via the spindle and swings beyond a predetermined swinging position, the ratchet release member contacts and presses the bearing member. Thus, the hook portion is separated from the ratchet gear, and the bobbin rotates.

  According to the fifth aspect of the present invention having the above-described configuration, the ratchet hook can be reliably driven in conjunction with the swinging of the slack eliminating roller to engage and disengage from the ratchet gear.

  According to the present invention, in a braiding carrier that is mounted on a braider for braiding a large number of yarns, holds a bobbin around which each yarn is wound, and feeds the yarn, the tension of the yarn drawn out from the bobbin is easily achieved. And a braiding carrier that can be easily changed by a simple operation when changing the tension level.

  Hereinafter, embodiments of a braiding carrier according to the present invention will be described with reference to FIGS.

  First, based on FIG. 5 and FIG. 6, one structural example of a braider, which is an automatic machine for composing a composition by crossing a plurality of reinforcing fiber yarns, will be described. FIG. 5 is a schematic front view showing an example of a braider, and FIG. 6 is a schematic sectional side view of the braider. The braider BR is composed of a braider body Bb and a mandrel device Bm. In the application example of the present invention, the mandrel device Bm is a device for controlling the position of the mandrel m, and grips the mandrel m to perform horizontal movement and rotation.

  The braider body Bb has a curved upper plate U having a radius of curvature R disposed in a substantially cylindrical machine base Fb having a horizontal axis and having an opening e on one side, and is formed in the circumferential direction of the upper plate U. A bobbin carrier C that travels along the track, a driving device D that causes the bobbin carrier C to travel along the track, and a yarn guide device G.

  Then, the yarn Y drawn out in the axial direction of the bobbin from the bobbin placed on the bobbin carrier C is gathered at substantially the center of the upper plate U, and the position of the mandrel m attached to the mandrel device Bm is the mandrel m The composition point P of the braid formed above is located at the center of the upper plate U. The mandrel device Bm can control the position of the mandrel m in one, two, or three dimensions.

  Thus, the bobbin carrier C is caused to travel along the track by the driving device D, and the position of the mandrel m is controlled by the mandrel device Bm. As a result, a large number of yarns Y are interlaced, and if necessary, By interlacing the yarn y for medium thread from the bobbin carrier C arranged almost horizontally on the frame Fb ′ of the machine base Fb with the yarn Y that is unwound from the bobbin carrier C running along the track and assembled. Braiding (braid) is performed and the braid is assembled on the mandrel m having various shapes.

  After the preparation of the braid by braiding is completed, the yarns Y and y are cut by an appropriate cutting device, and the mandrel m having the finished braid composition is removed from the mandrel device Bm.

  Here, the braiding carrier BC holding the bobbin 3 around which the yarn Y is wound will be described in detail with reference to FIGS.

  The braiding carrier BC according to the present invention is different from the bobbin carrier C that supports the bobbin around which the yarn Y is wound, and supports the bobbin 3 around which the yarn Y is wound, and the yarn that is pulled out. This is a bobbin carrier in which the tension of Y can be easily adjusted in a plurality of stages, and can be suitably applied to a braider using yarns of various sizes, so it is referred to as a braiding carrier instead of a bobbin carrier.

  FIG. 1 shows an overall perspective view of the braiding carrier BC, and FIG. 2 shows an overall front view. FIG. 3 is a schematic explanatory view of the urging force adjusting means according to the present invention, wherein (a) shows a state where the first arm is in the long position, and (b) shows a state where the first arm is in the short position. Is shown.

  As shown in FIG. 1, the braiding carrier BC has a carrier body 2 erected on a base 1, a bobbin 3 is mounted, a coil spring 4, a ratchet mechanism 5, and an urging force adjusting means 6. The yarn Y is fed from the yarn guide 10 through the swinging loosening roller 7 and the fixed guide rollers 8 and 9, and the carrier body 2 holds the bobbin 3 and the yarn Y. It is the structure provided with the roller group to send out.

  The slack eliminating roller 7 is movable toward and away from the fixed guide rollers 8 and 9, and is configured to apply a predetermined tension to the wound yarn Y as shown in the figure. That is, when the tension of the yarn Y is loosened, the slack eliminating roller 7 swings away from the fixed guide rollers 8 and 9 and acts to pull the yarn Y, and the tension of the yarn Y is high. In this case, the slack eliminating roller 7 swings in a direction approaching the fixed guide rollers 8 and 9 and acts to loosen the yarn Y. In this way, the yarn Y having a predetermined yarn tension range is sent from the yarn guide 10 to the composition point P of the braid described above.

  Further, in order to adjust the tension of the yarn Y drawn out from the bobbin 3, in addition to the slack eliminating roller 7 that swings and applies a predetermined tension, the slack removing roller 7 that moves is interlocked with the movement of the slack eliminating roller 7. A ratchet mechanism 5 for intermittently rotating the bobbin 3, a coil spring 4 for applying a biasing force against the swinging of the slack eliminating roller 7, and a biasing force by the coil spring 4 to the slack eliminating roller 7 are stepped. The urging force adjusting means 6 that can be changed automatically is provided.

  Next, the ratchet mechanism 5 and the urging force adjusting means 6 according to the present invention will be described in detail with reference to FIGS.

  The ratchet mechanism 5 includes a ratchet gear 11 provided at a bobbin mounting portion on which the bobbin 3 is mounted, a ratchet hook 21 having a hook portion 21A that engages with the ratchet gear 11, and the movement of the slack removing roller 7 that swings. A ratchet release member 24 that interlocks and separates the hook portion 21 </ b> A from the ratchet gear 11 is provided.

  A pressing spring member 23 is attached to one end side of the ratchet hook 21 as an urging force for engaging the hook portion 21 </ b> A with the ratchet gear 11. A bearing member 22 is rotatably mounted on the other end side of the ratchet hook 21 that is rotatable about the shaft support portion 21B. When the ratchet releasing member 24 comes into contact with and presses against the bearing member 22, the ratchet hook 21 is rotated about the shaft support portion 21 </ b> B, and the hook portion 21 </ b> A is separated from the ratchet gear 11. When the ratchet hook 21 is separated from the ratchet gear 11, the bobbin 3 is freely rotatable, and the bobbin 3 is rotated by the tension of the yarn Y to be pulled out, and the yarn Y is continuously pulled out. It becomes.

  The ratchet releasing member 24 is interlocked with the movement of a circular gear 41 described later, and the circular gear 41 is interlocked with the movement of the slack eliminating roller 7. This movement will be described below.

  The slack eliminating roller 7 swings around the shaft 40 via the arm 7A. The arm 7A and the circular gear 41 are integrated, and the circular gear 41 rotates around the shaft 40 in conjunction with the movement of the slack eliminating roller 7 swinging.

  The circular gear 41 meshes with the sector gear 42, and the sector gear 42 is fixed to the first arm 31 described later. Further, since the first arm 31 is rotatable around the axis 30, the first arm 31 is rotated around the axis 30 when the sector gear 42 swings in conjunction with the circular gear 41. .

  That is, the first arm 31 swings in conjunction with the swing of the slack eliminating roller 7. Next, the urging force adjusting means 6 including the first arm 31 will be described in detail with reference to FIG.

  The biasing force adjusting means 6 includes a first arm 31 that rotates in conjunction with the swinging of the slack eliminating roller 7, a second arm 32 that is a transmission arm, and a third arm that is provided with the coil spring 4 described above. The arm 33 is provided in order, and a link mechanism for transmitting a substantially constant torque of the coil spring 4 to the first arm 31 is provided. In addition, an arm length changing mechanism is provided that can change the length of the first arm 31 in a plurality of stages, and the position at which the first arm 31 is biased through the second arm 32 is changed. The configuration is such that the magnitude of the torque transmitted to the first arm 31 is changed.

  As described above, since the first arm 31 is interlocked with the swing of the slack eliminating roller 7, if the magnitude of the torque transmitted to the first arm 31 changes, the swing torque of the slack eliminating roller 7 also changes. It will be.

  The coil spring 4 is attached to the shaft 20 and one end thereof is hooked to the third arm 33. That is, a substantially constant urging force is urged to the third arm 33. The direction of this urging force is in the direction of arrow A5 in the figure, and a substantially constant force is urged through the second arm 32 to the shaft support portion 312 serving as the action point of the first arm 31, and the first arm length Torque having a magnitude proportional to the height is applied in the direction of arrow A3. This torque is equivalently transmitted by the sector gear 42 and the circular gear 41, and rotates the circular gear 41 in the direction of the arrow A2 and swings the slack eliminating roller 7 in the direction of the arrow A1 to give tension to the yarn Y. . That is, by changing the first arm length, the urging force to the slack eliminating roller 7 can be adjusted.

  For this purpose, in the present embodiment, the first arm 31 is composed of a fixed arm 31A and a swing arm 31B, and the swing arm 31B is rotated about the shaft support portion 311, and the length shown in FIG. It was set as the structure which can be changed from the small arm length L1 to the short arm length L1A shown in FIG.3 (b).

  The fixed arm 31A is fixed in contact with one side of the sector gear 42, and the swing arm 31B is in contact with one side of the sector gear 42 when in the long position shown in FIG. It is in contact. From this state, the free end of the swing arm 31B is rotated in a direction away from one side of the sector gear 42, overlapped with the fixed arm 31A, and is also in contact with one side of the sector gear 42. By doing so, it can be set to the short position of the arm length L1A.

  Since the second arm 32 is pivotally supported by the pivotal support 312 on the free end side of the swing arm 31B, the second arm 32 is changed by changing the length of the arm from the long L1 to the short L1A. It is possible to change the point of action of the substantially constant urging force from. In other words, the acting torque on the first arm 31 and, in turn, the biasing force on the slack eliminating roller 7 can be adjusted.

  For example, the ratio of the arm length L1 of the first arm and the arm length L2 of the third arm when the swing arm 31B is in the long position is set to 1: 1, and the arm length L1 and the swing If the ratio of the arm 31B to the arm length L1A when the arm 31B is in the short position is 9: 1, the operating torque to the first arm 31 can be reduced to 1/9.

  The above arm length changing operation is a simple operation only for changing the swing arm 31B from the long position to the short position. Further, both when the swing arm 31B is at the long position and at the short position, the swing arm 31B is in contact with one side of the sector gear 42, and the position is naturally fixed.

  That is, the biasing force to the slack eliminating roller 7 can be adjusted by a simple operation of rotating the swing arm 31B between the long position and the short position.

  As described above, the biasing force adjusting means according to the present invention includes the first arm 31 that rotates in conjunction with the swinging of the slack eliminating roller 7, the second arm 32 that is a transmission arm, and the coil spring 4. A link mechanism that includes three arms 33 in order to transmit the urging force of the coil spring 4 to the operating point of the first arm; and an arm length changing mechanism that allows the length of the first arm 31 to be changed in multiple stages. It consists of

  During braiding, when the slack eliminating roller 7 swings according to the length of the drawn yarn Y, the third arm 33 rotates by a predetermined amount according to the swing amount. The tension on the yarn Y due to the force is kept substantially constant.

  Therefore, the biasing force to the slack eliminating roller 7 by the coil spring 4 is changed by changing the swing arm 31B between the long position and the short position according to the thickness and type of the yarn Y to be used. Can be adjusted. Of course, the urging force can be adjusted by changing the spring force of the coil spring 4, but using the braiding carrier according to the present invention is preferable because the adjustment range of the urging force is further expanded.

  Since the ratchet mechanism 5 described above includes the ratchet release member 24 that separates the hook portion 21A from the ratchet gear 11 in conjunction with the swinging amount of the slack eliminating roller 7, the arm length of the first arm 31 is changed. However, it is irrelevant to this change and is always configured to perform the same operation.

  That is, as shown in FIG. 4A, when the slack eliminating roller 7 swings in the direction of arrow A7, the circular gear 41 rotates in the direction of arrow A8, and the ratchet release member 24 connected by the shaft support 25 is moved to the arrow. Move in the A6 direction. The ratchet release member 24 is guided by a guide bush 26 and is slidable. Since the amount of movement of the ratchet release member 24 is always linked to the amount of swing of the slack eliminating roller 7, the ratchet release member 24 that slides and moves in the direction of arrow A6 is shown in FIG. The ratchet hook 21 is brought into contact with the bearing member 22 to rotate about the shaft support portion 21B, and the hook portion 21A is separated from the ratchet gear 11.

  That is, when the slack eliminating roller 7 swings by a predetermined amount, the ratchet is released and the bobbin becomes rotatable, and rotates by the tension of the drawn yarn Y. Thus, the yarn Y is always pulled out when the slack eliminating roller 7 swings to a predetermined position. The yarn tension when the yarn Y is pulled out is influenced by the urging force to the slack eliminating roller 7 described above, but since this urging force can be adjusted stepwise, the solution according to the yarn to be used can be adjusted. Dredge is possible.

  If the first arm 31 described above is in a long state, the urging force of the coil spring 4 acts greatly, and a large tension is applied to the yarn Y. If the first arm 31 is short, the urging force of the coil spring 4 acts only small, so that the tension applied to the yarn Y remains small.

  When the bobbin is rotated and a predetermined length of thread is pulled out, the tension decreases, the slack eliminating roller 7 swings in the direction opposite to the arrow A7, and the ratchet release member 24 moves in the direction opposite to the arrow A6. The ratchet hook 21 is urged by the holding spring member 23 and is rotated in the direction of the arrow A9, the hook portion 21A engages with the ratchet gear 11, and the rotation of the bobbin is stopped.

  When the yarn Y is pulled out while the bobbin is stopped, the slack eliminating roller 7 starts to swing in the direction of the arrow A7. In this way, the slack eliminating roller 7 swings in accordance with the pulling condition of the yarn Y, and the bobbin rotates and stops repeatedly.

  A braider that performs braiding by combining a large number of yarns Y includes a large number of braiding carriers BC. Also, depending on the yarn Y to be used, there is an appropriate value of the tension to be added, but if the braiding carrier according to the present invention is used, this adjustment can be performed only by changing the position of the swing arm 31B described above, Even a braider including a large number of braiding carriers BC can easily adjust the tension.

  Further, since the bobbin always rotates when the slack eliminating roller 7 swings to a predetermined position, the tension applied to the yarn Y does not become abnormally high, and the yarn drawn from all the braiding carriers BC. It is possible to make Y tension uniform.

  As described above, according to the present invention, a yarn that is mounted on a braider for braiding a large number of yarns, holds the bobbins on which the respective yarns are wound, and feeds the yarns to be drawn out from the bobbin. Can be easily aligned. In addition, when changing the tension level of the thread to be pulled out, it is possible to easily change and align the tension levels of all the threads with a simple operation of changing the position of the swing arm 31B. A braiding carrier can be obtained.

  Therefore, even if the thickness and type of the yarn are changed, the same braiding carrier can be used to easily align all the yarn tensions. The effect that it can be made into a braider is also exhibited.

1 shows an overall perspective view of a braiding carrier according to the present invention. It is the whole braiding carrier front view. It is a schematic explanatory drawing of the urging | biasing force adjustment means which concerns on this invention, (a) shows the state which has a 1st arm in a long position, (b) has shown the state which has a 1st arm in a short position. It is a schematic explanatory drawing of a ratchet mechanism concerning the present invention, (a) shows the state where a ratchet hook is engaged with a ratchet gear, and (b) shows the state where the above-mentioned engagement was canceled. It is a schematic front view which shows an example of a braider. It is a schematic sectional side view of the said braider.

Explanation of symbols

3 bobbin 4 coil spring 5 ratchet mechanism 6 urging force adjusting means 7 slack removing roller 11 ratchet gear 21 ratchet hook 21A hook part 22 bearing member 24 ratchet release member 31 first arm 31A fixed arm 31B swing arm 32 second arm 33 first Three arms 41 Circular gear 42 Fan-shaped gear Y Thread BC Braiding carrier BR Braider

Claims (5)

A braiding carrier that is mounted on a braider that braids a large number of yarns to form a tubular assembly, holds a bobbin around which the yarns are wound, and feeds the yarns,
In order to adjust the tension of the yarn drawn out from the bobbin, the slack removing roller that applies a predetermined tension to the yarn wound and wound, and the movement of the slack removing roller that is swung A ratchet mechanism for intermittently rotating the bobbin, a coil spring for applying a biasing force against the swinging of the slack eliminating roller, and a biasing force adjusting means for changing the biasing force to the slack eliminating roller stepwise. A braiding carrier characterized by the provision.   The biasing force adjusting means comprises a first arm that rotates in conjunction with the swinging of the slack eliminating roller, a second arm that is a transmission arm, and a third arm that has the coil spring in order. The link mechanism for transmitting the swinging change of the roller to the amount of displacement of the coil spring, and the arm length changing mechanism for changing the length of the first arm in a plurality of stages. The braiding carrier according to 1.   The first arm is composed of a fixed arm at the base of the shaft and a swing arm that is rotatably connected to the fixed arm via a shaft support, and the second arm is connected to a free end of the swing arm. A long position where the free end is rotated outward from the shaft support portion to form a long first arm, and a short position where the free end rotates inward from the shaft support portion to form a short first arm. And a fan-shaped gear that meshes with a circular gear provided on the shaft support portion of the slack eliminating roller adjacent to the first arm, and one side of the fan-shaped gear, the fixed arm, and the The swing arm is in contact with the side surface of the swing arm, and the free end of the swing arm is rotated in a direction away from one side of the fan-shaped gear so as to be rotatable between a long position and a short position. The brady according to claim 1 or 2, Grayed career.   The ratchet mechanism includes a ratchet gear provided in a bobbin mounting portion on which the bobbin is mounted, a ratchet hook having a hook portion that engages with the ratchet gear, and the hook portion in conjunction with the movement of the slack removing roller that swings. The braiding carrier according to any one of claims 1 to 3, further comprising a ratchet releasing member that is separated from the ratchet gear.   The ratchet hook has a hook portion that engages with the ratchet gear via a pressing spring member on one end side, a bearing member is rotatably mounted on the other end side, and the center is pivotally supported. When the swinging slack removing roller swings beyond a predetermined swing position, the ratchet release member abuts against the bearing member and presses the hook portion. The braiding carrier according to claim 4, wherein the bobbin rotates away from the ratchet gear.

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