JP5673148B2 - Bobbin chuck device for winding machine - Google Patents

Description

  The present invention relates to a bobbin chuck device for a yarn winding machine in which a bobbin is mounted on a bobbin holder and a thread member is wound around the bobbin by rotating a rotation shaft of the bobbin holder.

  In the yarn winding machine, a bobbin is mounted on a bobbin holder, and a thread member is wound around the bobbin by rotating a rotating shaft of the bobbin holder. The bobbin in such a winding machine is usually a cylindrical member that is detachably attached to a bobbin holder that is rotated by a drive motor. In order to prevent the bobbin from being detached from the bobbin holder during winding, The bobbin is fixed (chucked) by a bobbin chuck device provided on the machine. Further, if the fixing by the bobbin chuck device is released, the bobbin can be removed from the bobbin holder.

  The bobbin chuck device as described above has been conventionally known, and is disclosed, for example, in Patent Document 1 below.

  In the bobbin chuck device of Patent Document 1, a holding member is connected between a plurality of spacer rings into which a bobbin holder is inserted (provided in an inserted state), and the spacer ring moves in the axial direction. The chuck piece is provided with an elastic shaft that holds the chuck piece that can be inverted while rotating in the radial direction by the holding member, and urges the chuck piece to rotate in the tilting direction.

  With the above configuration, when the spacer ring moves in a direction to reduce the axial interval, the chuck piece is pushed by the spacer ring to form an upright state, and the outer periphery of the chuck piece is the inner periphery of the bobbin. And the inner periphery of the chuck piece grips the outer periphery of the bobbin holder. In addition, when the spacer ring moves in a direction that increases the axial interval, the chuck piece is released from the spacer ring, and the chuck piece rotates while being turned sideways by the biasing force of the elastic shaft that is the rotation axis of the chuck piece. The chuck piece is separated from the inner periphery of the bobbin and the outer periphery of the bobbin holder. In this way, the bobbin is chucked and released.

Japanese Utility Model Publication No. 6-73038

  However, in the bobbin chuck device of Patent Document 1, the spacer ring and the holding member are alternately connected in the axial direction of the bobbin holder so that the movement of the spacer ring in the axial direction is sequentially transmitted in a chain manner. Is standing or lying on its side. Therefore, there is a problem that the manufacturing cost is high because the configuration of the bobbin chuck device is complicated. In addition, the number of parts was large, so there was a high possibility of problems.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a bobbin chuck device that can easily and reliably chuck and release a bobbin with a simple configuration.

  In the bobbin chuck device of the yarn winding machine according to the present invention, the bobbin is mounted on the bobbin holder, and the thread member is wound around the bobbin by rotating the rotating shaft of the bobbin holder. The bobbin chuck device of this yarn winding machine is provided on the outer periphery of the rotating shaft, has a chuck piece that can be rotated in the radial direction, and has an opening corresponding to the position of the chuck piece. A sleeve member that is movable in the direction, and when the sleeve member is moved in the axial direction, the inner diameter end of the opening pushes the chuck piece so that the chuck piece is rotated in the outer diameter direction. The bobbin is chucked by protruding and pressing the inner wall surface of the bobbin, while the inner diameter end of the opening pushes the chuck piece in the reverse direction by the movement of the sleeve member in the reverse axis direction, so that the chuck piece is moved in the inner diameter direction. The bobbin chuck is released by rotating and retracting at the opening.

  According to this, when the sleeve member moves in the axial direction, the inner diameter end portion of the opening pushes the chuck piece, so that the chuck piece rotates in the outer diameter direction and protrudes at the opening to press the inner wall surface of the bobbin. By doing so, the bobbin is chucked. On the other hand, when the sleeve member moves in the reverse axis direction, the inner diameter end of the opening pushes the chuck piece in the reverse direction, so that the chuck piece rotates in the inner diameter direction and retracts in the opening to release the bobbin chuck. ing. This eliminates the need to provide a complicated configuration for causing the bobbin to be chucked and released by rotating to be in a standing state or a sideways state. Therefore, the bobbin can be easily and reliably chucked and released with a simple configuration.

  Further, it is preferable that an elastic member that moves the sleeve member in the axial direction by an elastic force is provided, and the chuck piece is rotated in the outer diameter direction by the sleeve member moving in the axial direction by the elastic force of the elastic member. According to this, since the axial movement of the sleeve member is performed by the elastic force of the elastic member, the bobbin can be easily chucked.

  Further, it is preferable that an air cylinder for moving the sleeve member in the reverse axial direction by the pressing force is provided, and the chuck piece is rotated in the inner diameter direction by the sleeve member moving in the reverse axial direction by the pressing force of the air cylinder. According to this, since the movement of the sleeve member in the reverse axis direction is performed by the pressing force of the air cylinder, the chuck of the bobbin can be easily released.

  In addition, a swing member connected to the sleeve member and swinging by the pressing force of the air cylinder is provided. When the swinging member swings by the pressing force of the air cylinder, the sleeve member moves in the reverse axis direction. preferable. According to this, by operating the air cylinder at a desired timing, the sleeve member can be moved in the reverse axis direction via the swing member.

  The chuck piece includes a first piece portion to be pushed when protruding and a second piece portion to be pushed when retracted, and the inner diameter end of the opening portion is moved in the axial direction of the sleeve member. When the part presses the first piece part of the chuck piece, the chuck piece rotates in the outer diameter direction and protrudes at the opening, and the bobbin is chucked by pressing the inner wall surface of the bobbin, while the reverse axis of the sleeve member When the inner diameter end of the opening pushes the second piece part of the chuck piece in the reverse direction by moving in the direction, the chuck piece rotates in the inner diameter direction and retracts at the opening, thereby releasing the bobbin chuck. preferable. According to this, the first protrusion is pushed at the inner diameter end of the opening when protruding, and the second protrusion is pushed at the inner diameter end of the opening when retracting. The force from the inner diameter end of the opening can be appropriately received, and the chuck piece can be reliably rotated.

  According to the present invention, when the sleeve member moves in the axial direction, the inner diameter end of the opening pushes the chuck piece, so that the chuck piece rotates in the outer diameter direction and protrudes at the opening, and the inner wall surface of the bobbin is While the bobbin is chucked by pressing, the inner diameter end of the opening pushes the chuck piece in the reverse direction by the movement of the sleeve member in the reverse axis direction, so that the chuck piece rotates in the inner diameter direction and Retract and release the bobbin chuck.

  As a result, the chuck piece that chucks and releases the bobbin by rotating does not need to be provided with a complicated structure for standing or lying down. Therefore, the bobbin can be easily and reliably chucked and released with a simple configuration.

  For this reason, the workability concerning the replacement of the bobbin is improved, and the winding in the winding machine is made highly efficient. Further, since the bobbin is securely chucked, the safety during winding is also improved.

It is a perspective view which shows the bobbin holder provided with the bobbin chuck apparatus. FIG. 2 is a view taken along line II-II in FIG. 1. The main part of the bobbin chuck device is shown. (A) A sectional view when the chuck piece is rotated in the outer diameter direction, and (b) a sectional view when the chuck piece is rotated in the inner diameter direction. is there. It is a top view which shows a rocking | fluctuation mechanism. Each state of the bobbin holder provided with the bobbin chuck device is shown, (a) a sectional view showing a state where the bobbin chuck is performed, and (b) a sectional view showing a state where the bobbin chuck is released.

  Next, an embodiment of a bobbin chuck device for a winding machine according to the present invention will be described with reference to the drawings. In the bobbin chuck device (hereinafter referred to as “this device”) 1 of the winding machine in this embodiment, the bobbin 100 is mounted on the bobbin holder 10, and the thread member is wound around the bobbin 100 by rotating the rotating shaft 2 of the bobbin holder 10. It is applied to the bobbin holder 10 of the take-up winder. As shown in FIG. 1, the bobbin holder 10 to which the present apparatus 1 is applied has a portion A with a flange F as a boundary held inside a winding machine main body (not shown) and a portion B in the winding machine main body. It is held so as to protrude outward. In the bobbin holder 10, the rotation shaft 2 of the bobbin holder 10 is rotated by a drive motor held inside the winding machine body, and the yarn member is wound around the bobbin 100 to which the bobbin holder 10 is inserted. In the following description, the bobbin holder 10 will be described, and the configuration and operation of the apparatus 1 will be described. As shown in FIG. 1, in the bobbin holder 10, the end on the side where the part A is located is referred to as a “base end part”, and the end on the side where the part B is located is referred to as a “tip part”.

  As shown in FIG. 2, the bobbin holder 10 has a rotating shaft 2 provided in the horizontal direction, a plurality of chuck pieces 3 provided at predetermined intervals on the outer periphery of the rotating shaft 2, and the rotating shaft 2. A sleeve member 4 having an opening 41 corresponding to a position where the chuck piece 3 is provided, and a swing mechanism 6 connected to the sleeve member 4 on the base end side in the portion B are provided. Moreover, this apparatus 1 is provided with the chuck piece 3, the sleeve member 4, and the rocking | fluctuation mechanism 6 among the above structures.

  The rotary shaft 2 is a rotary shaft member provided so as to penetrate from the part A to the part B, and rotates while maintaining a horizontal state by a drive motor. As the rotary shaft 2 rotates, the yarn member is wound around the bobbin 100 into which the bobbin holder 10 is inserted.

  The chuck pieces 3 are evenly arranged on the outer periphery of the rotary shaft 2 in the part B. Specifically, the chuck pieces 3 are provided at four positions at equal intervals in the axial direction of the rotating shaft 2, and are provided every 90 ° with respect to the circumferential direction of the rotating shaft 2. That is, a total of 16 chuck pieces 3 are arranged on the outer periphery of the rotating shaft 2. In addition, since all the chuck pieces 3 provided in each place have the same configuration, the following description will be made with a focus on one chuck piece 3.

  As shown in FIGS. 3A and 3B, the chuck piece 3 has an oval first piece portion 31 with rounded corners and a mode orthogonal to the intermediate portion of the first piece portion 31. And a second piece portion 32 provided in the above.

  The first piece portion 31 has a chuck piece rotating shaft 31a at one end on the rotating shaft 2 side. The chuck piece rotating shaft 31a is tangentially arranged on the outer periphery of the rotating shaft 2 by the fixing member 21 provided on the rotating shaft 2 (the direction from the front surface to the back surface in FIGS. 3A and 3B). It is provided in parallel with. Accordingly, since the first piece portion 31 can be rotated in the direction indicated by the arrow in FIGS. 3A and 3B around the chuck piece rotation shaft 31a, the chuck piece 3 as a whole It can be rotated. Here, for example, as shown in FIG. 3A, when the first piece portion 31 is in a state of rotating to the tip end side (side-down state), the chuck piece 3 is viewed from the tip end side. When a sleeve member 4 described later moves, the first piece portion 31 is pushed by the sleeve member 4. Thereby, the chuck piece 3 is rotated in the outer diameter direction around the chuck piece rotation shaft 31a, and the first piece portion 31 is in an upright state (the state shown in FIG. 3B). Note that the “outer diameter direction” herein refers to a direction in which the first piece portion 31 rotates to be in an upright state.

  The second piece portion 32 is provided in a manner orthogonal to the side that rotates in order for the first piece portion 31 to rise from the sideways state. That is, in this embodiment, the second piece portion 32 is provided on the proximal end side of the first piece portion 31. Therefore, for example, as shown in FIG. 3B, when the first piece portion 31 is in the standing state, the sleeve member in the opposite direction (from the proximal end side to the distal end side) with respect to the chuck piece 3. When 4 moves, the 2nd piece part 32 will be pushed in the reverse direction ahead of the 1st piece part 31. FIG. As a result, the chuck piece 3 rotates in the inner diameter direction about the chuck piece rotation shaft 31a, and the first piece portion 31 enters the sideways state (the state shown in FIG. 3A). Here, the “inner diameter direction” is a direction in which the first piece portion 31 is rotated in a sideways state.

  As shown in FIG. 2, the sleeve member 4 is a substantially cylindrical member having an integral structure into which the rotating shaft 2 is inserted, and forms an outer shape of the bobbin holder 10 at the site B. Further, the sleeve member 4 is movable toward both the distal end side and the proximal end side of the rotary shaft 2 and rotates together with the rotary shaft 2. Hereinafter, in the movement of the sleeve member 4, the movement from the distal end side to the proximal end side is referred to as “movement in the axial direction”, and the movement from the proximal end side to the distal end side. This is called “movement in the reverse axis direction”.

  The sleeve member 4 has an opening 41 at a position corresponding to each of the chuck pieces 3. As shown in FIGS. 3A and 3B, the opening 41 is formed so as to be in contact with the first piece portion 31 and the second piece portion 32 of the chuck piece 3 at the inner diameter end portion 41 a. Has been. Therefore, as described above, when the sleeve member 4 moves in the axial direction, the chuck piece 3 is rotated in the outer diameter direction in a state where the chuck piece 3 is in contact with the inner diameter end portion 41 a of the opening 41. When the sleeve member 4 moves in the reverse axis direction, the chuck piece 3 is rotated in the inner diameter direction in a state where the chuck piece 3 is in contact with the inner diameter end 41 a of the opening 41. Therefore, the chuck piece 3 can be reliably rotated by the movement of the sleeve member 4.

  Here, as shown in FIGS. 3A and 3B, the height from the upper end of the opening 41 to the rotary shaft 2 is H, and the chuck piece when the first piece portion 31 is in an upright state. H2 is the height of the highest point from the rotary shaft 2 of H3, and H2 is the height of the highest point from the rotary shaft 2 of the chuck piece 3 when the first piece portion 31 is in the sideways state. The chuck piece 3 and the sleeve member 4 are configured to satisfy the relationship <H <H1.

  Here, satisfying H <H1 when the first piece portion 31 is in the standing state means that the first piece portion 31 protrudes at the opening 41 of the sleeve member 4 forming the outer shape of the bobbin holder 10. It is. Accordingly, the diameter of the bobbin holder 10 is increased. As a result, the first piece portion 31 presses the inner wall surface of the bobbin 100 attached to the bobbin holder 10, and as a result, the bobbin 100 is chucked.

  On the other hand, satisfying H2 <H when the first piece portion 31 is in the sideways state means that the first piece portion 31 is retracted in the opening 41. Therefore, the diameter of the bobbin holder 10 that has been increased by the first piece portion 31 is reduced to the outer shape formed by the sleeve member 3. As a result, the first piece portion 31 does not press the inner wall surface of the bobbin 100 attached to the bobbin holder 10, and as a result, the chuck of the bobbin 100 is released.

  Further, as shown in FIG. 2, the sleeve member 4 is formed such that the outer diameters of the tip end portion 42a and the intermediate portion 42b of the bobbin holder 10 are larger than the diameters of the other portions, and accordingly, the tip end portion 42a. In addition, the inner diameter of the intermediate portion 42b is also increased. In the sleeve member 4, the first spring member 51 a is provided inside the distal end portion 42 a of the sleeve member 4, and the second spring member 51 b is provided inside the intermediate portion 42 b of the sleeve member 4.

  First, paying attention to the first spring member 51a, the rotary shaft 2 is inserted, one end abuts against a locking member 43a projecting radially on the distal end side of the rotary shaft 2, and the other end is a sleeve member. 4 is in contact with the urging surface 44a having a smaller diameter. Therefore, when the sleeve member 4 is on the distal end side, the first spring member 51a is elastically deformed in the axial direction of the rotary shaft 2 and holds an elastic force by the locking member 43a fixed to the rotary shaft 2. The sleeve member 4 is moved in the axial direction by being biased by applying the retained elastic force to the biasing surface 44a.

  Similarly, in the second spring member 51b, the rotary shaft 2 is inserted, one end abuts against a locking member 43b protruding in the radial direction of the rotary shaft 2, and the other end is an intermediate portion of the sleeve member 4. 42b is in contact with the urging surface 44b having a smaller diameter. Therefore, when the sleeve member 4 is on the distal end side, the second spring member 51b is elastically deformed in the axial direction of the rotary shaft 2 by the locking member 43b fixed to the rotary shaft 2 and holds the elastic force. In addition, the sleeve member 4 is moved in the axial direction by being biased by applying the retained elastic force to the biasing surface 44b.

  In this way, by providing the two first spring members 51a and the second spring member 51b for moving the sleeve member 4 in the axial direction, a large force is applied to the sleeve member 4 to cause the sleeve member 4 to move in the axial direction. It can be easily moved.

  As shown in FIG. 1, the swing mechanism 6 is provided on the base end side of the part B. The swinging mechanism 6 includes an upper swinging member 61a and a lower swinging member 61b provided so as to be sandwiched from above and below so as not to contact the sleeve member 4, and a portion where the swinging members 61a and 61b are in contact with each other. One end is fixed, and the swinging shaft part 62 that forms an axis for swinging both swinging members 61a and 61b, and both swinging members on the opposite side of the swinging shaft part 62 across the sleeve member 4 61a, 61b includes a connecting portion 63 that connects the contact portions of each other, a connecting portion 64 that connects both the swinging members 61a, 61b and the sleeve member 4, and an air cylinder 65 that is connected to the connecting portion 63. Yes.

  Each of the upper swing member 61a and the lower swing member 61b is a substantially semicircular member, and forms an annular shape by being paired from above and below.

  The swing shaft portion 62 is provided on one side where the upper swing member 61a and the lower swing member 61b are in contact with each other, and is fixed so that the swing members 61a and 61b do not move. Further, as shown in FIG. 4, the swinging shaft part 62 has a swinging shaft 621 in a direction orthogonal to the moving direction of the sleeve member 4 in the vicinity of the sleeve member 4. With this swinging shaft 621, the swinging shaft portion 62 is fixed so that the swinging members 61 a and 61 b do not move relative to each other, and in the direction of the arrow (axial direction) shown in FIG. 61a and 61b are swung.

  The connecting portion 63 is fixed so that the swinging members 61 a and 61 b do not move relative to each other, and is movable in the axial direction of the rotary shaft 2. Therefore, both the swinging members 61a and 61b can be swung by the swinging shaft portion 62 without contacting the sleeve member 4 while maintaining the ring shape.

  As shown in FIGS. 1 and 4, the connecting portion 64 includes a connecting rod 641 provided toward the rotating shaft 2 at the intermediate portion between the upper swing member 61a and the lower swing member 61b, and FIG. As shown in the figure, a connecting cylinder 642 is provided which is connected to the connecting rod 641 and is provided so as to abut on an end portion 45b on the proximal end side of the sleeve member 4 in the axial direction. In the connecting portion 64, the connecting rod 641 moves to the tip end side as both the swinging members 61 a and 61 b swing, so that the connecting tube 642 connected to the connecting rod 641 is connected to the sleeve member 4. The end portion 45b on the base end side is pushed and moved to the front end side. Thereby, the sleeve member 4 moves in the reverse axis direction.

  The air cylinder 65 retains a pressing force for moving the connecting portion 63 in the direction toward the distal end portion of the rotary shaft 2 by receiving supply of air from an air supply device (not shown) or the like. When the connecting portion 63 moves to the tip end side by the pressing force held by the air cylinder 65, both the swinging members 61a and 61b swing around the swinging shaft 621. Along with this, the sleeve member 4 is moved in the reverse axis direction via the connecting portion 64. Here, the pressing force held by the air cylinder 65 is larger than the urging force of the first spring member 51a and the second spring member 51b.

  As a result, in the swing mechanism 6, the air cylinder 65 is held with a pressing force by supplying air, and the connecting portion 63 is moved to the tip side in the axial direction by the pressing force. As a result, both the swinging members 61 a and 61 b swing around the swinging shaft 621, and the connecting rod 641 moves the connecting tube 642 toward the distal end side of the rotating shaft 2 along with the swinging. For this reason, since the end portion 45b of the sleeve member 4 provided in contact with the connecting cylinder 642 is pushed and moved toward the distal end portion, the sleeve member 4 can be moved in the reverse axis direction. Further, if air is supplied to the air cylinder 65 at a desired timing, the sleeve member 4 can be moved in the reverse axis direction by the pressing force against the elastic force of the first spring member 51a and the second spring member 51b. Therefore, the chuck of the bobbin 100 can be easily released according to the winding state of the bobbin 100.

  Next, the usage direction of the apparatus 1 will be described. In the following description, the bobbin 100 will be described from the stage where it is not attached to the bobbin holder 10. Since air is supplied to the air cylinder 65 and a pressing force is applied to the sleeve member 4 on the distal end side, the sleeve member 4 is moved in advance to the distal end side. Therefore, the chuck piece 3 is in a state of being retracted in the opening 41 (the state of FIG. 3A).

  First, the case where the bobbin 100 is chucked will be described. First, the bobbin 100 is mounted on the bobbin holder 10. At this time, since the chuck piece 3 does not protrude from the opening 41 in the sleeve member 4, the sleeve member 4 is mounted smoothly.

  Next, the supply of air to the air cylinder 65 is stopped. As a result, the pressing force of the air cylinder 65 is lost, and the sleeve member 4 is pushed by the elastic force held by the first spring member 51a and the second spring member 51b accommodated therein, and moves in the axial direction. .

  By the movement of the sleeve member 4 in the axial direction, the first piece portion 31 of the chuck piece 3 is pushed by the inner diameter end portion 41 a of the opening portion 41. As a result, the chuck piece 3 is rotated in the outer diameter direction, and the first piece portion 31 is in an upright state. Accordingly, the first piece portion 31 of the chuck piece 3 protrudes at the opening 41 and presses the inner wall surface of the bobbin 100, so that the bobbin 100 is chucked as shown in FIG.

  Next, the case where the chuck of the bobbin 100 is released will be described. In a state where the bobbin 100 is chucked, air is supplied to the air cylinder 65. As a result, the air cylinder 65 holds a pressing force, and the connecting portion 63 of the swing mechanism 6 moves to the tip end side due to the pressing force, and the sleeve member 4 moves in the reverse axial direction via the connecting portion 64.

  Due to the movement of the sleeve member 4 in the reverse axis direction, the second piece portion 32 of the chuck piece 3 is pushed by the inner diameter end portion 41a of the opening portion 41 in the opposite direction. As a result, the chuck piece 3 rotates in the inner diameter direction, and the first piece portion 31 is in the sideways state. Accordingly, the first piece portion 31 of the chuck piece 3 is retracted in the opening 41 and does not press the inner wall surface of the bobbin 100, and the chuck of the bobbin 100 is released as shown in FIG. 5B.

  As described above, when the sleeve member 4 moves in the axial direction, the inner diameter end portion 41a of the opening 41 pushes the first piece portion 31 of the chuck piece 3, so that the chuck piece 3 rotates in the outer diameter direction and the chuck piece. The third first piece portion 31 projects at the opening 41 and presses the inner wall surface of the bobbin 100, whereby the bobbin 100 can be chucked. On the other hand, when the sleeve member 4 moves in the reverse axis direction, the inner diameter end portion 41a of the opening 41 pushes the second piece portion 32 of the chuck piece 3 in the reverse direction, whereby the chuck piece 3 rotates in the inner diameter direction. The first piece portion 31 of the chuck piece 3 is retracted in the opening portion 41, and the chuck of the bobbin 100 can be released.

  As a result, the chuck piece 3 for chucking and releasing the bobbin 100 does not need to be provided with a complicated configuration for standing or lying down. Accordingly, the bobbin 100 can be easily and reliably chucked and released with a simple configuration. For this reason, it becomes possible to improve the workability | operativity concerning substitution of the bobbin 100, the safety | security of operation | movement as a winding machine, and the efficiency in winding.

  In the above-described embodiment, the case where the sleeve member 4 has an integral structure has been described. However, the sleeve member 4 may not be an integral structure, and may be composed of a plurality of parts.

  Moreover, although the case where the sleeve member 4 is substantially cylindrical shape was demonstrated, arbitrary shapes may be sufficient.

  Moreover, although the chuck piece 3 demonstrated the case provided with the 1st piece part 31 for pushing at the time of protrusion, and the 2nd piece part 32 for being pushed at the time of retraction, the opening part in the sleeve member 4 was demonstrated. Any shape may be adopted as long as it is pushed by 41 by the inner diameter end 41a and rotates.

  Moreover, although the case where the chuck pieces 3 are equally disposed on the outer periphery of the rotating shaft 2 has been described, it may be appropriately disposed.

  Moreover, although the case where two, the 1st spring member 51a and the 2nd spring member 51b were provided was demonstrated, the number of elastic members may be one and three or more may be sufficient. Further, any elastic member other than the spring member may be used.

  Further, when the sleeve member 4 moves in the axial direction, the chuck piece 3 rotates in the outer diameter direction to chuck the bobbin 100, while when the sleeve member 4 moves in the opposite axial direction, the chuck piece 3 moves in the inner diameter direction. The case where the chuck of the bobbin 100 is released by rotating to the above has been described. However, on the contrary, when the sleeve member 4 moves in the reverse axis direction, the chuck piece 3 rotates in the inner diameter direction to chuck the bobbin 100, while the sleeve member 4 moves in the axial direction so that the chuck piece 3 The chuck of the bobbin 100 may be released by rotating in the outer diameter direction.

DESCRIPTION OF SYMBOLS 1 ... Bobbin chuck apparatus 2 ... Rotary shaft 3 ... Chuck piece 31 ... 1st piece part 32 ... 2nd piece part 4 ... Sleeve member 41 ... Opening part 41a ... Inner diameter end part 51a ... 1st spring member 51b ... 2nd spring member 6 ... Swing mechanism 10 ... Bobbin holder 100 ... Bobbin

Claims (4)

A bobbin chuck device for a yarn winding machine, in which a bobbin is mounted on a bobbin holder and a thread member is wound around the bobbin by rotating a rotation shaft of the bobbin holder,
A chuck piece provided on an outer periphery of the rotating shaft and rotatable in a radial direction;
The rotation shaft is inserted, and has an opening corresponding to the position of the chuck piece, and a sleeve member movable in the axial direction,
The chuck piece includes a first piece part to be pushed when protruding, and a second piece part to be pushed when retracted,
As the sleeve member moves in the axial direction, the inner diameter end of the opening pushes the first piece portion of the chuck piece, so that the chuck piece rotates in the outer diameter direction and protrudes at the opening. While the bobbin is chucked by pressing the inner wall surface of the
When the sleeve member moves in the reverse axis direction, the inner diameter end of the opening pushes the second piece portion of the chuck piece in the reverse direction, so that the chuck piece rotates in the inner diameter direction. A bobbin chuck device for a winding machine , wherein the bobbin chuck is retracted to release the bobbin chuck. An elastic member for moving the sleeve member in the axial direction by an elastic force;
2. The bobbin chuck device for a winding machine according to claim 1, wherein the chuck piece rotates in an outer diameter direction when the sleeve member moves in an axial direction by an elastic force of the elastic member. An air cylinder that moves the sleeve member in the reverse axial direction by a pressing force;
3. The bobbin chuck device for a winding machine according to claim 1, wherein the chuck piece rotates in an inner diameter direction when the sleeve member moves in the reverse axis direction by the pressing force of the air cylinder. A swing member connected to the sleeve member and swinging by a pressing force of the air cylinder;
The bobbin chuck device for a yarn winding machine according to claim 3, wherein the sleeve member moves in the reverse axial direction when the swinging member swings due to the pressing force of the air cylinder.