JP2014069931A - Traverse arm, and yarn winding machine including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a traverse arm that has light weight and superior strength and can be manufactured at low cost.SOLUTION: The traverse arm 74 includes an arm body 71 and a traverse guide 73 that is provided at a front end of the arm body 71, and is rotationally driven by a rotation drive shaft 77 that is substantially orthogonal to a longitudinal direction of the arm body 71. The arm body 71 is composed of a plate-like member, and at least a part of the plate-like member is bent in a cross section that is orthogonal to the longitudinal direction, so that a protrusion part 82 is formed that is protruded to a rotation drive shaft direction.

Description

  The present invention relates to a traverse arm for traversing a yarn in a yarn winding machine.

  The yarn winding machine includes a traverse device for traversing (twisting) the yarn wound around the winding bobbin. As such a traverse device, an arm-type traverse device including a traverse arm that is driven to reciprocate is known. Such a traverse device is described in Patent Documents 1 and 2, for example.

  Since the traverse arm is reciprocally driven to the left and right at high speed, it is desirable that the traverse arm be as light as possible. On the other hand, the traverse arm is required to have strength so that it does not break or bend when force is applied, for example, when a thread is caught.

  In this regard, Patent Document 2 discloses a traverse arm having a truss structure in which a beam is sandwiched between two plates. According to Patent Document 2, by adopting a truss structure for the traverse arm, the traverse arm can be reduced in weight and rigidity can be increased.

JP 2011-195217 A JP 2010-137944 A

  However, since the traverse arm having the truss structure disclosed in Patent Document 2 has a complicated structure in which two plates and a beam are bonded together, there is a problem that manufacturing cost is high and manufacturing is difficult.

  An object of the present invention is to provide a traverse arm that is lightweight and excellent in strength and can be manufactured at low cost.

Means and effects for solving the problems

  According to an aspect of the present invention, a traverse arm includes an arm main body and a traverse guide provided at a distal end in the longitudinal direction of the arm main body, and a traverse drive shaft that is substantially orthogonal to the longitudinal direction of the arm main body. It is swiveled. The arm body is composed of a plate-like member, and at least a part of the plate-like member is bent in a cross section perpendicular to the longitudinal direction, thereby projecting in the same direction as the turning drive shaft. Is formed.

  Thus, since the arm main body can be formed thin by configuring the arm main body from the plate-like member, the arm main body can be reduced in weight. Then, by bending the plate-like member in a plane perpendicular to the longitudinal direction to form a convex portion on the arm body, the rigidity of the arm body can be secured with a simple configuration. For the bending of the plate-like member, for example, a press can be used, and manufacturing is easy.

  In the traverse arm, it is preferable that the convex portion of the arm main body is formed so that a protruding amount in the same direction as the turning drive shaft increases as the distance from the tip end portion increases in the longitudinal direction.

  Since the traverse arm is required to be stiffer as it is farther from the tip, the configuration of the traverse arm can gradually increase the rigidity of the traverse arm as it is farther from the tip.

  In the traverse arm described above, it is preferable that the convex portion is formed by bending the plate-like member into a polygonal line at an obtuse angle.

  As described above, since the projection is formed by bending the plate-like member at an obtuse angle, for example, bending by a press or the like is facilitated as compared with the case of bending at a right angle.

  It is preferable that the traverse arm has a mounting member that is separate from the arm body and is attached to the turning drive shaft. The attachment member is fixed to the base end portion in the longitudinal direction of the arm body.

  Since a torque for turning the traverse arm is applied to the base end portion of the traverse arm, rigidity is particularly required. Thus, as described above, the rigidity of the base end portion of the traverse arm can be ensured by fixing the mounting member having sufficient rigidity to the base end portion of the arm body.

  The arm body of the traverse arm has a flat plate-like portion that is substantially orthogonal to the turning drive shaft at a base end portion in the longitudinal direction. The attachment member is fixed to at least the flat plate portion.

  Since the planar portion is provided at the base end portion of the arm main body and the attachment member is attached to the flat plate-like portion, the attachment member can be stably fixed to the base end portion of the arm main body.

  In the traverse arm, it is preferable that the attachment member is disposed across the flat plate-like portion and the convex portion, and is fixed to the flat plate-like portion and the convex portion, respectively. .

  As described above, the mounting member can be more stably fixed to the arm body by disposing the mounting member across the convex portion and the flat plate-like portion.

  In the traverse arm described above, it is preferable that an insertion hole for inserting a fixture is formed in the arm body. The attachment member is fixed to the arm body by the fixing tool.

  By attaching the fixture to the attachment member through the insertion hole formed in the arm body, the arm body and the attachment member can be firmly fastened. The insertion hole for inserting the fixture can be formed in the arm body by a press or the like.

  According to another aspect of the present invention, the yarn winding machine has a plurality of winding units. Each winding unit includes a traverse device that traverses the yarn by the traverse arm.

  Since the yarn winding machine includes the traverse arm of the present invention that is lightweight, excellent in rigidity, and can be manufactured at low cost, the yarn to be wound can be stably traversed and the cost can be reduced. Therefore, according to the yarn winding machine of the present invention, a high-quality package can be formed at low cost.

The front view of the automatic winder which concerns on one Embodiment of this invention. The schematic front view of a winder unit. The side view which shows the mode of the traverse apparatus vicinity. (A) The side view of a traverse arm. (B) Front view of the traverse arm. (C) The perspective view of a traverse arm. The front view of an arm main body. FIG. 6 is a cross-sectional view taken along the line AA in FIG. 5. The BB cross-sectional arrow view and CC cross-sectional arrow view of FIG.

  Next, embodiments of the invention will be described. First, the configuration of an automatic winder (yarn winding machine) 1 according to this embodiment will be described with reference to FIGS. 1 to 3. In the present specification, “upstream” and “downstream” mean upstream and downstream in the traveling direction of the yarn when winding the yarn.

  As shown in FIG. 1, the automatic winder (yarn winding machine) 1 includes a plurality of winder units (winding units) 10 arranged side by side.

  As shown in FIG. 2, each winder unit 10 includes a yarn feeder 11, a yarn unwinding assisting device 12, a tension applying device 13, a splicer device (yarn joining device) 14, and a clearer (yarn defect detecting device). ) 15 and the winding unit 16 are arranged. Further, the winder unit 10 includes a unit control unit 50 that controls the operation of each unit included in the winder unit 10.

  The yarn supplying section 11 holds a yarn supplying bobbin 21 for supplying the yarn 20 at a predetermined position.

  The yarn unwinding assisting device 12 includes a regulating member 40 that covers the core tube of the yarn feeding bobbin 21. The regulating member 40 contacts a portion (balloon) where the yarn 20 unwound from the yarn feeding bobbin 21 is swung around the yarn feeding bobbin 21 by centrifugal force. Thereby, the yarn unwinding assisting device 12 controls the balloon to an appropriate size and assists the unwinding of the yarn 20 from the yarn supplying bobbin 21.

  The tension applying device 13 applies a predetermined tension to the traveling yarn 20. As the tension applying device 13, for example, a gate type device in which movable comb teeth are arranged with respect to fixed comb teeth can be used. By allowing the thread 20 to pass while bending between the engaged comb teeth, resistance can be applied to the traveling thread 20 and appropriate tension can be applied. The tension applying device 13 may be, for example, a disc type other than the gate type.

  The clearer 15 includes an unillustrated sensor for detecting an abnormal portion (yarn defect) of the yarn 20. A cutter 39 for cutting the yarn 20 immediately when the clearer 15 detects a yarn defect is provided in the vicinity of the clearer 15.

  The splicer device 14 includes a lower thread on the yarn feeding bobbin 21 and a take-up bobbin 22 when the clearer 15 detects a yarn defect and performs yarn cutting or when the yarn breakage occurs during unwinding from the yarn feeding bobbin 21. Join the upper thread on the side. As a yarn joining device for joining such an upper yarn and a lower yarn, a mechanical device, a device using a fluid such as compressed air, or the like can be used.

  On the lower side and upper side of the splicer device 14, a lower yarn catching member 25 that catches the yarn end on the yarn feeding bobbin 21 side and guides it to the splicer device 14, and a yarn end on the take-up bobbin 22 side is caught. An upper thread catching member 26 for guiding to the device 14 is provided.

  The winding unit 16 includes a cradle 23 that supports a winding bobbin 22 for winding the yarn 20, and a contact roller 29 that can rotate in contact with the circumferential surface of the winding bobbin 22. The winding unit 16 includes a rotation drive source (not shown) that rotationally drives the winding bobbin 22 supported by the cradle 23. By rotating the winding bobbin 22, the yarn 20 can be wound around the outer periphery of the winding bobbin 22. The take-up bobbin 22 in a state where the yarn 20 is taken up in this way is referred to as a package 30.

  The winder unit 10 includes an arm-type traverse device 70 in the vicinity of the cradle 23 for traversing (twisting) the yarn 20 wound around the winding bobbin 22. As shown in FIG. 3, the traverse device 70 includes a traverse drive motor 76, a turning drive shaft 77, and a traverse arm 74.

  The traverse drive motor 76 is for driving the traverse arm 74 in a reciprocating manner, and is constituted by a servo motor or the like. The output shaft of the traverse drive motor 76 is the turning drive shaft 77. As shown in FIG. 3, the turning drive shaft 77 is connected to the base end portion of the traverse arm 74 in the longitudinal direction. The traverse arm 74 is fixed so as not to rotate relative to the turning drive shaft 77. As shown in FIG. 3, when the traverse arm 74 is fixed to the turning drive shaft 77, the longitudinal direction of the traverse arm 74 and the turning drive shaft 77 are substantially orthogonal to each other.

  A traverse guide 73 is formed at the distal end of the traverse arm 74 (the end opposite to the base end in the longitudinal direction). The traverse guide 73 is formed in a shape that can engage with the yarn 20 wound around the winding bobbin 22 (a shape that can hook the yarn 20).

  The traverse drive motor 76 repeats forward and reverse rotations, and the traverse arm 74 is reciprocally swung, whereby the traverse guide 73 moves in the winding width direction of the package 30 (the horizontal direction in FIG. 2 and the vertical direction in FIG. 3). To reciprocate. By rotating the winding bobbin 22 with the yarn 20 engaged with the traverse guide 73, the yarn 20 can be wound around the winding bobbin 22 while traversing to form a package 30 having a predetermined shape. it can.

  Next, the traverse arm 74 according to this embodiment will be described with reference to FIG.

  As shown in FIG. 4, the traverse arm 74 of the present embodiment includes an arm main body 71, a guide member 75, and an attachment member 72.

  As shown in FIG. 4, the arm main body 71 is formed in an elongated shape. In the longitudinal direction of the arm main body 71, the side on which the turning drive shaft 77 is attached is referred to as “base end”, and the opposite side (traverse guide 73 side) is referred to as “tip”. In the following description, the longitudinal direction of the arm body 71 may be simply referred to as “longitudinal direction”. In the following description, a direction parallel to the axis of the turning drive shaft 77 is referred to as a “turning drive shaft direction”. The turning drive shaft direction is orthogonal to the longitudinal direction of the arm body 71. The direction perpendicular to the longitudinal direction and the turning drive shaft direction (the left-right direction in FIG. 4B) is referred to as a “traverse width direction”.

  The arm body 71 is formed by processing a plate-like member. In this way, by configuring the arm body 71 from a plate-like member, the arm body 71 can be configured to be thin, and the arm body 71 can be reduced in weight.

  Specifically, the arm main body 71 of this embodiment is formed by pressing an aluminum plate. Thus, by comprising the arm main body 71 from an aluminum plate, the said arm main body can be comprised lightweight, and moderate rigidity can be ensured. Since the arm body 71 is formed by pressing, it is easy to mass-produce the arm body 71.

  As shown in FIG. 4, a traverse guide 73 is formed at the tip of the arm body 71. As described above, the traverse guide 73 is formed in a shape that can be engaged with the yarn 20. The traverse guide 73 of this embodiment is formed in a bowl shape (hook shape) as shown in FIG.

  A guide member 75 is disposed in a portion where the traverse guide 73 is in contact with the yarn 20 (in the case of the present embodiment, a portion inside the hook-shaped traverse guide 73). The guide member 75 is formed of a material having excellent wear resistance such as ceramics and is fixed to the arm body 71. The yarn 20 traversed by the traverse device 70 travels while sliding while in contact with the guide member 75.

  When the traverse arm 74 is driven to reciprocate and swing, a large torque is applied between the traverse arm 74 and the swing drive shaft 77. Therefore, a sufficient rigidity is required for a portion to which the turning drive shaft 77 of the traverse arm 74 is attached. Since the arm main body 71 of this embodiment is formed of an aluminum plate, it is difficult to give the base end portion of the arm main body 71 enough rigidity to attach the turning drive shaft 77 directly.

  An attachment member 72 for attaching the turning drive shaft 77 is provided at the base end portion of the traverse arm 74 of the present embodiment. An attachment hole 78 for attaching the turning drive shaft 77 is formed in the attachment member 72. The mounting hole 78 is formed with a key groove 79 for preventing the traverse arm 74 from rotating relative to the turning drive shaft 77.

  In the traverse arm 74 of this embodiment, the attachment member 72 is separate from the arm body 71. Since the mounting member 72 is separate from the arm main body 71, the mounting member 72 can be formed by a manufacturing method other than pressing (for example, machining). Therefore, the attachment member 72 can be formed in an arbitrary shape that can ensure sufficient rigidity. In the present embodiment, the attachment member 72 is made of aluminum.

  Next, the configuration of the arm body 71 will be described in detail with reference to FIGS.

  As described above, the trough-shaped traverse guide 73 is formed on the distal end side of the arm main body 71. As shown in FIG. 5, a plate-like portion 80 for fixing the mounting member 72 is formed on the proximal end side of the arm main body 71. In the following description, a portion of the arm body 71 between the traverse guide 73 and the flat plate portion 80 is referred to as an intermediate portion 85.

  The arm main body 71 of this embodiment forms the traverse guide 73, the intermediate part 85, and the flat plate-like part 80 by pressing one aluminum plate. The traverse guide 73, the intermediate portion 85, and the flat plate portion 80 are integrally formed.

  As shown in FIG. 6, the flat plate portion 80 is formed in a flat plate shape orthogonal to the turning drive shaft 77. By forming the flat plate portion 80 into a flat plate shape orthogonal to the turning drive shaft 77, the attachment member 72 can be stably attached to the flat plate portion 80.

  As shown in FIG. 6, when viewed in the traverse width direction, the arm body 71 is bent at a boundary portion between the traverse guide 73 and the intermediate portion 85. This is because the traverse guide 73 is brought closer to the outer peripheral surface of the contact roller 29 as shown in FIG. The boundary portion between the traverse guide 73 and the intermediate portion 85 can be bent by the bending process using the press described above.

  As shown in FIG. 5, when viewed in the direction of the turning drive shaft, the ring shape of the intermediate portion 85 of the arm main body 71 is formed so as to gradually increase from the distal end portion toward the proximal end portion. Thereby, in the plane orthogonal to the turning drive shaft 77 (in the plane shown in FIG. 5), the rigidity of the arm body 71 is higher in the portion closer to the base end portion. Therefore, for example, even if the yarn 20 is caught by the traverse guide 73 and a force is applied to the traverse arm 74, the arm main body 71 is not easily deformed in a plane orthogonal to the turning drive shaft 77.

  As shown in FIG. 7, the intermediate portion 85 of the arm main body 71 of the present embodiment is convex toward one side in the swivel drive axis direction in a cross section perpendicular to the longitudinal direction (in the cross section shown in FIG. 7). A convex portion 82 is formed. In addition, if this convex part 82 is seen from the back, it can be said that the recessed part which becomes concave toward one side in the turning drive axis direction is formed. Since the convex portion and the concave portion are integrated with each other, the following description will be made exclusively as the convex portion 82.

  The convex portion 82 is formed by drawing or bending by the press described above. Thus, by forming the convex part 82 in the arm main body 71, the rigidity of the arm main body 71 in the plane (in the plane shown in FIG. 6) including the turning drive shaft direction and the longitudinal direction can be increased.

  As shown in the cross-sectional views of FIGS. 6 and 7, the convex portion 82 is formed so that the amount of protrusion in the turning drive shaft direction gradually increases as it approaches the proximal end portion from the distal end portion. Thereby, in the plane (in the plane shown in FIG. 6) including the turning drive axis direction and the longitudinal direction, the portion of the arm body 71 that is closer to the base end portion has higher rigidity.

  With the above configuration, for example, even when the yarn 20 is caught on the traverse guide 73 and a force is applied to the traverse arm 74, the arm main body 71 is within the plane including the turning drive axis direction and the longitudinal direction (in the plane shown in FIG. 6). Difficult to deform.

  Next, the configuration of the convex portion 82 will be described more specifically.

  As shown in the BB cross-sectional arrow view and the CC cross-sectional arrow view of FIG. In the case of form, the aluminum plate is formed by bending. In the present embodiment, as shown in FIG. 7, the convex portion 82 is formed by bending the aluminum plate into a polygonal line in a cross section orthogonal to the longitudinal direction.

  As shown in the perspective view of FIG. 4C, the convex portion 82 is configured by connecting planes facing in different directions. Specifically, as shown in FIGS. 5 and 7, the arm main body 71 includes a front surface portion 83 and a side surface portion 84.

  As shown in FIGS. 5 and 4C, the front surface portion 83 and the side surface portion 84 are each formed as a triangular plane whose width increases as it approaches the proximal end portion from the distal end portion.

  The front part 83 is formed so that the normal line thereof is in the turning drive axis direction (that is, the front part 83 faces the turning drive axis direction). Side portions 84 are connected to both ends of the front portion 83 in the traverse width direction. As shown in FIG. 7, the side surface portion 84 is obliquely connected to the front surface portion 83 in the cross section orthogonal to the longitudinal direction. Therefore, the normal line of the side surface portion 84 is oriented in an oblique direction with respect to the turning drive shaft direction.

  As shown in FIG. 7, in the cross section orthogonal to the longitudinal direction, the front surface portion 83 and the side surface portion 84 are connected at an obtuse angle. In the cross section, the aluminum plate constituting the arm body 71 is bent at an obtuse angle. Thus, since the angle at which the aluminum plate is bent is an obtuse angle, it is easy to bend the aluminum plate by press working to form the convex portion 82.

  As shown in FIGS. 5 and 6, the arm main body of the present embodiment includes a planar bottom surface portion 86 that connects a side on the base end portion side of the front surface portion 83 and a flat plate-shaped portion 80. As shown in FIG. 5, the bottom surface portion 86 is formed in a trapezoidal shape, and is connected to the sides on the proximal end side of the front surface portion 83 and the side surface portion 84.

  As shown in FIG. 6, the flat plate-like portion 80 and the front portion 83 are arranged substantially in parallel. A step 87 is formed between the front portion 83 and the flat plate portion 80 in the direction of the turning drive shaft.

  The attachment structure of the attachment member 72 to the arm body 71 will be described in detail.

  As shown in FIG. 5, the flat plate portion 80 is formed with an insertion hole 81 into which a screw (fixing tool) is inserted. The attachment member 72 can be fixed to the flat plate-like portion 80 by screwing a fixing screw into the attachment member 72 through the insertion hole 81. Although the formation method of the insertion hole 81 is not specifically limited, In this embodiment, the insertion hole 81 is formed by punching with a press. According to this, when forming the arm main body 71 by press work, the insertion hole 81 can be formed simultaneously.

  Two insertion holes 81 are formed in the flat plate-like portion 80 of this embodiment side by side in the traverse width direction. When fixing the mounting member 72 to the flat plate-shaped portion 80, the screws are passed through the two insertion holes 81 and screwed into the mounting member 72. In this manner, the attachment member 72 can be stably fixed to the arm body 71 by screwing the attachment member 72 through the plurality of insertion holes formed in the arm body 71.

  In the present embodiment, as shown in FIGS. 5 and 6, an insertion hole 88 is also formed on the base end side of the convex portion 82 (specifically, the base end side of the front portion 83). As shown in FIG. 4, the attachment member 72 is disposed so as to straddle the convex portion 82 and the flat plate-like portion 80. When fixing the attachment member 72 to the arm main body 71, a screw is passed through the insertion hole 88 formed in the convex portion 82 and screwed into the attachment member 72. Thereby, since the attachment member 72 can be fixed to both the convex part 82 and the flat plate-like part 80, the attachment member 72 can be stably fixed to the arm main body 71.

  Furthermore, in this embodiment, as shown in FIG. 5, when viewed in the direction of the turning drive shaft, the insertion hole 88 formed in the convex portion 82 and the two insertion holes 81 formed in the flat plate-like portion 80 are Constitutes the vertices of a triangle. The attachment member 72 of the present embodiment is configured to be screwed to the arm main body 71 at three points when viewed in the turning drive shaft direction. Thereby, the attachment member 72 can be more stably fixed to the arm main body 71 in a plane orthogonal to the direction of the turning drive axis (in the plane shown in FIG. 5).

  As described above, the traverse arm 74 of the present embodiment includes the arm main body 71 and the traverse guide 73 provided at the distal end portion of the arm main body 71 in the longitudinal direction, and is substantially in the longitudinal direction of the arm main body 71. It is swiveled by a swivel drive shaft 77 that is orthogonal. The arm main body 71 is composed of a plate-like member, and a part of the plate-like member is bent in a cross section perpendicular to the longitudinal direction (in the cross section shown in FIG. 7), so that the arm main body 71 is convex in the turning drive shaft direction. The convex part 82 which becomes is formed.

  Thus, since the arm main body 71 can be comprised thinly by comprising the arm main body 71 from a plate-shaped member, the said arm main body 71 can be reduced in weight. By bending the plate member in a plane orthogonal to the longitudinal direction to form the convex portion 82 on the arm main body 71, the rigidity of the arm main body 71 can be secured with a simple configuration. A press or the like can be used for bending the plate-like member, and manufacturing is easy.

  In the traverse arm 74 of the present embodiment, the convex portion 82 of the arm main body 71 is formed such that the protruding amount in the turning drive shaft direction increases as the distance from the distal end portion increases in the longitudinal direction.

  Since the traverse arm 74 is required to be stiffer as it is farther from the front end, the configuration of the traverse arm 74 can gradually increase the rigidity of the traverse arm 74 as it is farther from the front end.

  In the traverse arm 74 of the present embodiment, the aluminum plate constituting the arm body 71 is bent into a polygonal line at an obtuse angle within a plane orthogonal to the longitudinal direction.

  As described above, since the convex portion 82 is formed by bending the aluminum plate at an obtuse angle, for example, bending by a press or the like is facilitated as compared with the case of bending at a right angle.

  The traverse arm 74 of the present embodiment is a separate body from the arm main body 71 and has an attachment member 72 attached to the turning drive shaft 77. The attachment member 72 is fixed to the proximal end portion of the arm body 71 in the longitudinal direction.

  Since the torque for driving to turn the traverse arm 74 is applied to the base end portion of the traverse arm 74, rigidity is particularly required. Therefore, as described above, the rigidity of the base end portion of the traverse arm 74 can be ensured by fixing the mounting member 72 having sufficient rigidity to the base end portion of the arm main body 71.

  In the traverse arm 74 of the present embodiment, the arm body 71 has a flat plate-like portion 80 that is substantially orthogonal to the turning drive shaft 77 at the base end portion in the longitudinal direction. The attachment member 72 is fixed to the flat plate-like portion 80.

  Thus, since the flat plate-like portion 80 is provided at the base end portion of the arm main body 71 and the mounting member 72 is attached to the flat plate-like portion 80, the mounting member 72 is stable with respect to the base end portion of the arm main body 71. Can be fixed.

  In the traverse arm 74 of the present embodiment, the attachment member 72 is disposed across the flat plate portion 80 and the convex portion 82, and is fixed to the flat plate portion 80 and the convex portion 82, respectively.

  Thus, the mounting member 72 can be more stably fixed to the arm body 71 by arranging the mounting member 72 across the convex portion 82 and the flat plate-like portion 80.

  In the traverse arm 74 of this embodiment, the arm body 71 is formed with insertion holes 81 and 88 for inserting screws. The attachment member 72 is fixed to the arm body 71 by tightening a screw through the insertion holes 81 and 88.

  By screwing screws into the attachment member 72 through the insertion holes 81 and 88 formed in the arm body 71, the arm body 71 and the attachment member 72 can be firmly fastened. The insertion holes 81 and 88 for inserting screws can be formed in the arm main body 71 by a press or the like.

  The automatic winder 1 of the present embodiment has a plurality of winder units 10. Each winder unit 10 includes a traverse device 70 that traverses the yarn 20 by the traverse arm 74 described above.

  Since the automatic winder 1 includes the traverse arm 74 of the present embodiment that is lightweight, excellent in rigidity, and can be manufactured at low cost, the wound yarn 20 can be stably traversed and the cost can be reduced. Therefore, according to the automatic winder 1 of the present embodiment, the high-quality package 30 can be formed at low cost.

  The preferred embodiment of the present invention has been described above, but the above configuration can be modified as follows, for example.

  In the above embodiment, the arm main body 71 is formed by pressing an aluminum plate. However, the present invention is not limited to this, and the arm main body 71 can be formed by an appropriate metal plate. The material of the arm body 71 is preferably a material that is lightweight and has an appropriate rigidity.

  The material of the arm body 71 is not limited to a metal plate, and the arm body 71 may be configured by appropriately bending other plate-like members. For example, it is possible to form an arm body having the same shape as the arm body 71 of the above-described embodiment using a CFRP (Carbon Fiber Reinforced Plastics) plate or the like as a material.

  A hole for weight reduction may be appropriately formed in the arm main body 71.

  In the above-described embodiment, the arm main body 71 forms the convex portion 82 by being bent into a polygonal line within a plane orthogonal to the longitudinal direction. In this case, as shown in the perspective view of FIG. 4C, the convex portion 82 has a multifaceted shape. However, the present invention is not limited thereto, and for example, the convex portion 82 may be formed by bending the arm main body 71 in a curved line within a plane orthogonal to the longitudinal direction. In this case, the convex portion 82 has a curved surface shape. In short, it is only necessary that the convex part 82 (or the concave part) is formed by bending the arm body 71 in a plane orthogonal to the longitudinal direction, and the shape is not particularly limited.

  It is sufficient that at least one convex portion is formed on the arm main body 71, and a plurality of convex portions can be formed.

  In the above embodiment, the material of the attachment member 72 is aluminum. However, the material of the attachment member 72 is not limited to aluminum, and may be a material having a certain degree of rigidity. The material of the attachment member 72 and the material of the arm main body 71 may be different.

  The attachment structure of the attachment member 72 with respect to the arm main body 71 is not limited to the above, and an appropriate structure can be adopted. The mounting member 72 may be omitted, and the arm body 71 may be directly mounted on the turning drive shaft 77.

  A fixing tool for fixing the attachment member 72 to the arm body 71 is not limited to a screw, and may be a caulking pin, for example.

1 Automatic winder (yarn winding machine)
2 Winding unit (winder unit)
DESCRIPTION OF SYMBOLS 70 Traverse apparatus 71 Traverse arm 72 Mounting member 74 Arm main body 77 Turning drive shaft 82 Convex part

Claims (8)

The arm body,
A traverse guide provided at the longitudinal end of the arm body;
A traverse arm that is swiveled by a swivel drive shaft that is substantially orthogonal to the longitudinal direction of the arm body,
The arm body is composed of a plate-like member, and at least a part of the plate-like member is bent in a cross section perpendicular to the longitudinal direction, thereby projecting in the same direction as the turning drive shaft. The traverse arm characterized by being formed. The traverse arm according to claim 1,
The traverse arm, wherein the convex portion of the arm body is formed such that a protruding amount in the same direction as the turning drive shaft increases as the distance from the tip end portion increases in the longitudinal direction. The traverse arm according to claim 1 or 2,
The traverse arm is characterized in that the convex portion is formed by bending the plate-like member into an obtuse angle in a polygonal line shape. The traverse arm according to any one of claims 1 to 3,
It has a mounting member that is separate from the arm body and is attached to the turning drive shaft.
The traverse arm, wherein the attachment member is fixed to a base end portion of the arm body in the longitudinal direction. The traverse arm according to claim 4,
The arm body has a flat plate-like portion that is substantially orthogonal to the turning drive shaft at the base end in the longitudinal direction,
The traverse arm, wherein the attachment member is fixed to at least the flat plate portion. The traverse arm according to claim 5,
The traverse arm, wherein the attachment member is disposed across the flat plate portion and the convex portion, and is fixed to the flat plate portion and the convex portion, respectively. The traverse arm according to claim 5 or 6,
The arm body is formed with an insertion hole for inserting a fixture,
The traverse arm, wherein the attachment member is fixed to the arm body by the fixture.   A yarn winding machine comprising a plurality of winding units including a traverse device that traverses a yarn by the traverse arm according to any one of claims 1 to 7.

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