Yarn piercing device and yarn feeding device

Abstract

To provide a yarn piercing device and a yarn feeding device which can realize automation of a series of operations including a yarn piercing process and a yarn feeding process while simultaneously obtaining both maintenance of yarn quality and improvement of operation accuracy.SOLUTION: The yarn piercing device controls a suction nozzle and an arm part so as to perform a yarn setting process including at least one of a first yarn setting operation for, prior to a first setting operation of setting a first yarn end of a first yarn feeding package in a yarn piercing mechanism, causing the suction nozzle to hold the first yarn end and the arm part to lock a yarn of the first yarn feeding package by a clip and a second yarn setting operation for, prior to a second setting operation of setting a second yarn end of a second yarn feeding package in the yarn piercing mechanism, causing the suction nozzle to hold the second yarn end and the arm part to lock a yarn of the second yarn feeding package by a clip. The yarn piercing device is movable with respect to a creel stand.SELECTED DRAWING: Figure 12

Description

[Technical field]

[0001] One aspect of the present invention relates to a yarn splicing device and a yarn supplying device. [Background technology]

[0002] There is known a false twisting machine that performs a false twisting process on a plurality of synthetic yarns supplied from a yarn supply package and winds the processed synthetic yarns in a winding device to form a winding package. For example, Patent Document 1 discloses a false twisting machine having a yarn supply stand that holds a plurality of yarn supply packages and a twisting device that performs a false twisting process on the yarns supplied from the yarn supply packages. In such a yarn supply stand, a yarn splicing process (tail splicing process) is performed to join a synthetic yarn of a yarn supply package supported by one peg with a synthetic yarn of a yarn supply package supported by another peg. As a result, even if the synthetic yarn of one yarn supply package runs out, the synthetic yarn is supplied from another yarn supply package, so that the synthetic yarn can be continuously supplied to the twisting device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 7-68010 Summary of the Invention [Problem to be solved by the invention]

[0004] In the yarn splicing process, yarns are pulled out from each of the two yarn supply packages and spliced ​​together using a splicer. At the time of completion of this connection, the yarn portion connecting the yarn supply packages is in a considerably slack state. If one of the yarn supply packages becomes empty in this state, when the slack yarn portion between the packages is sent to the processing section, a local load may be applied to a part of the yarn portion or the yarn portion may come into contact with surrounding components, which may cause damage to the yarn or yarn breakage. In order to avoid such a problem, after the yarn is connected by the splicer, the operator locks the yarn portion between the packages with a locking portion provided at a predetermined position on the yarn supply stand, and in this locked state, rotates one or both of the yarn supply packages in a direction that pulls the yarn portion to eliminate the slack.

[0005] It has been considered to automate such a series of operations, including a yarn splicing process in which yarns are drawn from two yarn supply packages, guided to a splicer, and set, and these yarns are spliced ​​together by the splicer, and a threading process in which the spliced ​​yarn is threaded to the above-mentioned locking portion. However, in order to precisely move the yarn so that it is securely locked to the locking portion, it is necessary to strongly grip the yarn in the holding portion so that the yarn does not move, but in this case, the gripped yarn portion is damaged. On the other hand, when the yarn is held in a manner that does not damage it, such as by holding the yarn by hooking it on a hook, the yarn has irregular slack, making it difficult to precisely move the yarn end, and threading the yarn to the locking portion is likely to fail.

[0006] Therefore, an object of one aspect of the present invention is to provide a yarn splicing device and a yarn feeding device that can automate a series of operations including the yarn splicing process and the threading process, while maintaining yarn quality and improving operational accuracy. [Means for solving the problem]

[0007] A yarn splicing processing device according to one aspect of the present invention is a yarn splicing processing device for connecting a yarn end of a first yarn supply package and a yarn end of a second yarn supply package attached to a yarn supply stand, and for locking the connected yarn to at least one locking portion provided on the yarn supply stand, and includes a suction holding unit that holds the yarn by sucking it, a moving unit that moves the suction holding unit, a connecting unit that connects the yarn end of the first yarn supply package and the yarn end of the second yarn supply package, and a control unit that controls the suction holding unit, the moving unit, and the connecting unit, and the control unit performs a first set operation of causing the suction holding unit to hold the yarn end of the first yarn supply package and moving the suction holding unit so that the yarn end of the first yarn supply package is set in the connecting unit by the moving unit, and a second set operation of causing the suction holding unit to hold the yarn end of the second yarn supply package and moving the suction holding unit so that the yarn end of the second yarn supply package is set in the connecting unit by the moving unit. the suction holding unit, the moving unit, and the connecting unit are controlled to perform a yarn splicing process including a second set operation of moving the suction holding unit, and a connecting operation of connecting the yarn end of the first yarn supply package and the yarn end of the second yarn supply package by the connecting unit after the first set operation and the second set operation, and the suction holding unit and the moving unit are controlled to perform a yarn threading process including at least one of a first threading operation of holding the yarn end of the first yarn supply package by the suction holding unit and moving the suction holding unit so that the yarn of the first yarn supply package is locked to the locking unit before the first set operation, and a second threading operation of holding the yarn end of the second yarn supply package by the suction holding unit and moving the suction holding unit so that the yarn of the second yarn supply package is locked to the locking unit before the second set operation, and the yarn splicing processing device is movable relative to the yarn supply stand.

[0008] The yarn end of the first yarn supply package and the yarn end of the second yarn supply package referred to here refer not only to the tip of the yarn but also to a yarn portion having a predetermined length from the tip. The yarn supply stand is provided in the yarn supply section of the yarn processing device and supports a plurality of yarn supply packages. The yarn to be supplied to the processing section of the yarn processing device is wound around the yarn supply package. In the yarn splicing processing device having this configuration, unlike the conventional work sequence performed by an operator, the yarn is threaded on the locking section before the yarn is spliced. Since the yarns of the first yarn supply package and the second yarn supply package held by the suction holding section are always subjected to a suction force in the suction direction, tension is applied to the yarn portion extending from the yarn supply package to the suction holding section. Since the moving section can move the taut yarn end, the yarn can be moved more precisely than when the yarn end of an irregularly slack yarn is moved, and therefore the yarn can be threaded on the locking section with high precision. Furthermore, since the yarn is held by suction, no damage to the yarn occurs as occurs when the yarn is gripped. When a yarn having a connected yarn end of a first yarn supply package and a connected yarn end of a second yarn supply package is sucked and held by the suction holding section, a part of the yarn is sucked into the suction holding section in a bent state, which would damage the yarn. However, in this configuration, the yarn ends of the first yarn supply package and the second yarn supply package are sucked and held by the suction holding section, so that the above-mentioned bending does not occur. Therefore, even if the yarn is held by the suction holding section, the yarn is not damaged. As a result, it is possible to achieve automation of a series of operations including the yarn joining process and the yarn threading process while maintaining yarn quality and improving operational accuracy.

[0009] In a yarn splicing processing device according to one aspect of the present invention, the locking portion includes a first locking portion and a second locking portion, and the first threading operation is an operation of moving the suction holding portion so that the yarn of the first yarn supplying package is locked to the first locking portion, and the second threading operation is an operation of moving the suction holding portion so that the yarn of the second yarn supplying package is locked to the second locking portion.

[0010] In the yarn splicing processing device having this configuration, the same effect as above can be obtained even when the yarn supply stand is provided with a first locking portion for locking the yarn of the first yarn supply package and a second locking portion for locking the yarn of the second yarn supply package. In particular, when the yarn of the first yarn supply package is locked to the first locking portion and the yarn of the second yarn supply package is locked to the second locking portion, a more stable locking state can be obtained.

[0011] In a yarn splicing processing device according to one aspect of the present invention, the first locking portion includes a first inner layer side locking portion and a first outer layer side locking portion, and the second locking portion includes a second inner layer side locking portion and a second outer layer side locking portion. A first threading operation when a yarn is unwound from the outer layer side of a first yarn supplying package is an operation of holding a yarn end on the inner layer side of the first yarn supplying package by the suction holding portion and moving the suction holding portion so that the yarn of the first yarn supplying package is locked by the first inner layer side locking portion by the moving portion. A second threading operation when a yarn is unwound from the outer layer side of the first yarn supplying package is a first setting operation when a yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding an inner layer side yarn end of the first yarn supply package by the suction holding portion and moving the suction holding portion so that the yarn end of the inner layer side of the first yarn supply package is set in the connection portion by the moving portion, and a second setting operation when a yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding an inner layer side yarn end of the first yarn supply package by the suction holding portion and moving the suction holding portion so that the yarn end of the inner layer side of the first yarn supply package is set in the connection portion by the moving portion. The connecting operation when a yarn is unwound from the outer layer side of the first yarn supplying package is an operation of connecting the yarn end on the inner layer side of the first yarn supplying package to the yarn end on the outer layer side of the second yarn supplying package, and the first threading operation when a yarn is unwound from the outer layer side of the second yarn supplying package is an operation of holding the yarn end on the outer layer side of the first yarn supplying package by the suction holding unit and moving the suction holding unit so that the yarn end on the outer layer side of the second yarn supplying package is set to the connecting unit. the second yarn threading operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the inner layer side of the second yarn supply package by the suction holding portion and moving the suction holding portion so that the yarn of the second yarn supply package is locked to the second inner layer side locking portion by the moving portion, and the first set operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the outer layer side of the first yarn supply package by the suction holding portion,the second set operation when a yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the inner layer side of the second yarn supply package by the suction holding unit and moving the suction holding unit by the moving unit so that the yarn end on the inner layer side of the second yarn supply package is set to the connection portion, and the connecting operation when a yarn is unwound from the outer layer side of the second yarn supply package may be an operation of connecting the yarn end on the outer layer side of the first yarn supply package and the yarn end on the inner layer side of the second yarn supply package.

[0012] In the yarn splicing processing device having this configuration, the same effect as above can be obtained even when the yarn supply stand is provided with locking portions corresponding to the inner layer yarn of the first yarn supply package, the outer layer yarn of the first yarn supply package, the inner layer yarn of the second yarn supply package, and the outer layer yarn of the second yarn supply package. In particular, when a yarn is unwound from the outer layer side of the first yarn supply package, the yarn of the first yarn supply package is locked with the first inner layer locking portion and the yarn of the second yarn supply package is locked with the second outer layer locking portion, and when a yarn is unwound from the outer layer side of the second yarn supply package, the yarn of the first yarn supply package is locked with the first outer layer locking portion and the yarn of the second yarn supply package is locked with the second inner layer locking portion, the stability of the locked state at each locking portion can be further increased.

[0013] A yarn supplying device according to one aspect of the present invention includes a yarn supplying stand having a first attachment portion to which a first yarn supply package is attached, a second attachment portion to which a second yarn supply package is attached, and a locking portion to which a yarn is locked, and a yarn splicing device for connecting a yarn end of the first yarn supply package attached to the first attachment portion and a yarn end of the second yarn supply package attached to the second attachment portion, and for causing the connected yarn to be locked in the locking portion, wherein the locking portion includes at least one first yarn splicing device for locking a yarn pulled out from the first yarn supply package. and at least one second locking portion for locking a yarn pulled out from the second yarn supply package. The yarn splicing processing device includes a suction holding portion that holds the yarn by sucking the yarn, a moving portion that moves the suction holding portion, a connecting portion that connects a yarn end of the first yarn supply package and a yarn end of the second yarn supply package, and a control unit that controls the connecting portion, the suction holding portion, and the moving portion. The control unit controls the suction holding portion to hold the yarn end of the first yarn supply package, and the moving portion to set the yarn end of the first yarn supply package to the connecting portion. a first set operation in which the suction holding unit is moved so that the suction holding unit holds the yarn end of the second yarn supply package and the moving unit is moved so that the yarn end of the second yarn supply package is set to the connection unit; and a connecting operation in which the connection unit connects the yarn end of the first yarn supply package to the yarn end of the second yarn supply package after the first set operation and the second set operation; and the suction holding unit, the moving unit, and the connecting unit are controlled to perform a yarn threading process including at least one of a first threading operation in which, before the first set operation, the suction holding unit is moved so that the suction holding unit holds the yarn end of the first yarn supply package and the moving unit is moved so that the yarn of the first yarn supply package is engaged with the first locking unit; and a second threading operation in which, before the second set operation, the suction holding unit is moved so that the suction holding unit holds the yarn end of the second yarn supply package and the moving unit is moved so that the yarn of the second yarn supply package is engaged with the second locking unit, and the yarn splicing device is movable relative to the yarn supply stand.

[0014] In the yarn supplying device having this configuration, unlike the conventional procedure of operations performed by an operator, threading is performed before the yarn is connected. Since the suction force is always acting in the suction direction on the yarns of the first yarn supplying package and the second yarn supplying package held by the suction holding unit, tension is applied to the yarn portion from the yarn supplying package to the suction holding unit. The moving unit can move the taut yarn end, and therefore, compared to the case of moving the yarn end of an irregularly slack yarn, the yarn can be moved more precisely, and the yarn can be threaded to the locking unit with high accuracy. In addition, since the yarn is held by suction, the yarn is not damaged as in the case of gripping. When the yarn end of the first yarn supplying package and the yarn end of the second yarn supplying package are connected to each other, the yarn is sucked into the suction holding unit in a bent state, and the yarn is damaged. However, in this configuration, the yarn ends of the first yarn supplying package and the second yarn supplying package are sucked, and the above-mentioned bending does not occur. Therefore, even if the yarn is held by the suction holding unit, the yarn is not damaged.

[0015] Furthermore, in the yarn supplying device having this configuration, the yarn supply stand is provided with a first locking portion corresponding to the first yarn supply package and a second locking portion corresponding to the second yarn supply package. This allows the first locking portion and the second locking portion to be provided in a more appropriate position and orientation than a locking portion that is used for threading the yarn of the first yarn supply package and the yarn of the second yarn supply package. As a result, threading is made easier and the threaded yarn is less likely to come off.

[0016] Furthermore, in the yarn feeding device having this configuration, the load on the locking portion when rotating the yarn supply package to remove slack after the yarn splicing operation can be distributed to each of the first locking portion and the second locking portion. Therefore, it is possible to more effectively prevent the yarn from coming off each of the first locking portion and the second locking portion. Furthermore, even if the yarn comes off one of the first locking portion and the second locking portion, the yarn is locked to the other of the first locking portion and the second locking portion, so that the locked state of the yarn connecting the yarn supply packages can be maintained.

[0017] As described above, the yarn supplying device having this configuration can automate a series of operations including the yarn joining process and the yarn threading process while maintaining both the yarn quality and improving the operational accuracy.

[0018] In a yarn feeding device according to one aspect of the present invention, the first locking portion may be arranged closer to the first attachment portion than the center between the first attachment portion and the second attachment portion, and the second locking portion may be arranged closer to the second attachment portion than the center between the first attachment portion and the second attachment portion.

[0019] In this configuration, the yarn pulled out from the first yarn supply package is locked by the first locking portion arranged near the first yarn supply package, and the yarn pulled out from the second yarn supply package is locked by the second locking portion arranged near the second yarn supply package, thereby achieving more accurate and stable yarn threading at the first locking portion and the second locking portion.

[0020] In a yarn feeding device according to one aspect of the present invention, the first locking portion includes a first inner layer side locking portion and a first outer layer side locking portion, and the second locking portion includes a second inner layer side locking portion and a second outer layer side locking portion, and a first yarn threading operation when a yarn is unwound from the outer layer side of a first yarn supply package is an operation of holding a yarn end on the inner layer side of the first yarn supply package by the suction holding portion and moving the suction holding portion so that the yarn of the first yarn supply package is locked by the first inner layer side locking portion by the moving portion, and a second yarn threading operation when a yarn is unwound from the outer layer side of the first yarn supply package is The first set operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding the yarn end on the inner layer side of the first yarn supply package by the suction holding section and moving the suction holding section so that the yarn end on the inner layer side of the first yarn supply package is set in the connection section by the moving section, and the second set operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding the yarn end on the inner layer side of the first yarn supply package by the suction holding section and moving the suction holding section so that the yarn end on the inner layer side of the first yarn supply package is set in the connection section by the moving section. The operation is an operation of holding the yarn end on the outer layer side of the second yarn supply package by the suction holding unit and moving the suction holding unit so that the yarn end on the outer layer side of the second yarn supply package is set to the connection unit by the moving unit, and the connecting operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of connecting the yarn end on the inner layer side of the first yarn supply package to the yarn end on the outer layer side of the second yarn supply package, and the first threading operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the outer layer side of the first yarn supply package by the suction holding unit and moving the moving unit so that the yarn end on the outer layer side of the second yarn supply package is set to the connection unit. the second yarn threading operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the inner layer side of the second yarn supply package by the suction holding portion and moving the suction holding portion so that the yarn of the second yarn supply package is locked to the second inner layer side locking portion by the moving portion, and the first set operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the outer layer side of the first yarn supply package by the suction holding portion,the second set operation when a yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the inner layer side of the second yarn supply package by the suction holding unit and moving the suction holding unit by the moving unit so that the yarn end on the inner layer side of the second yarn supply package is set to the connection portion, and the connecting operation when a yarn is unwound from the outer layer side of the second yarn supply package may be an operation of connecting the yarn end on the outer layer side of the first yarn supply package and the yarn end on the inner layer side of the second yarn supply package.

[0021] In the yarn supply stand of the yarn supplying device of this configuration, locking portions are provided corresponding to the inner layer yarn of the first yarn supply package, the outer layer yarn of the first yarn supply package, the inner layer yarn of the second yarn supply package, and the outer layer yarn of the second yarn supply package, respectively. This allows each locking portion to be provided in a more appropriate position and orientation. As a result, the accuracy and stability of threading at each locking portion can be further improved. Effect of the Invention

[0022] According to one aspect of the present invention, it is possible to realize automation of a series of operations including a yarn joining process and a yarn threading process while maintaining both yarn quality and improving operational accuracy. [Brief description of the drawings]

[0023] [Figure 1] FIG. 1 is a diagram showing the configuration of a false twisting machine and a package changing device according to an embodiment. [Diagram 2] FIG. 2 is a perspective view showing a yarn supply package with an adapter attached. [Diagram 3] FIG. 3 is a perspective view showing a creel stand. [Figure 4] FIG. 4 is a front view showing the clip. [Diagram 5] FIG. 5 is a perspective view showing a peg. [Figure 6] FIG. 6 is a perspective view showing a package exchanging device. [Figure 7] FIG. 7 is a diagram showing a schematic configuration of the replacement unit. [Figure 8] FIG. 8 is a perspective view showing the yarn splicing device. [Figure 9] FIG. 9 is a perspective view showing a yarn splicing device. [Figure 10] FIG. 10 is a perspective view showing a yarn splicing device. [Figure 11] FIG. 11 is a block diagram showing a functional configuration of a package exchanging device including a yarn splicing processing device. [Figure 12] FIG. 12 is a flowchart showing a series of operations including the yarn splicing process and the yarn threading process in the yarn splicing processing device. [Figure 13] 13(A) and 13(B) are perspective views showing a series of operations in FIG. [Figure 14] 14(A) and 14(B) are perspective views showing a series of operations in FIG. [Figure 15] 15(A) and 15(B) are perspective views showing a series of operations in FIG. [Figure 16] FIG. 16 is a perspective view showing a part of a creel stand in which a clip according to the first modification is arranged. [Figure 17] FIG. 17 is a flowchart showing a series of operations including a yarn joining process and a yarn threading process in the yarn joining processing device according to the first modification. [Figure 18] 18(A) and 18(B) are perspective views showing a series of operations in FIG. [Figure 19] 19(A) and 19(B) are perspective views showing a series of operations in FIG. [Figure 20] FIG. 20 is a perspective view showing a part of a creel stand in which a clip according to the second modification is arranged. [Figure 21] FIG. 21 is a flowchart showing a series of operations including a yarn joining process and a yarn threading process in the yarn joining processing device according to the second modification. [Figure 22] 22(A) and 22(B) are diagrams showing a state where a yarn has been spliced ​​by the yarn splicing device according to the second modification. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or corresponding elements are designated by the same reference numerals, and duplicated explanations will be omitted.

[0025] As shown in Fig. 1, the yarn supplying device 100 of one embodiment includes a creel stand (yarn supplying stand) 20 and a yarn splicing device 9A. The creel stand 20 is provided in the false twisting machine 1. The yarn splicing device 9A of one embodiment is mounted on the package exchanging device 9. The yarn splicing device 9A includes a yarn splicing device 60 and a control unit 94, which will be described in detail later (see Figs. 1 and 11). In the following description, the "Z direction" shown in the drawings is the vertical direction (up-down direction), the "X direction" is the horizontal direction, and the "Y direction" is the horizontal direction perpendicular to the "X direction" and is also the direction perpendicular to both the X direction and the Z direction.

[0026] The false twisting machine 1 shown in FIG. 1 processes yarn (synthetic yarn) Y supplied from a plurality of yarn supply packages P1 to produce a winding package P2. The yarn Y is, for example, a synthetic yarn made of a thermoplastic synthetic fiber such as polyester or polyamide. The yarn supply package P1 is formed by winding a partially oriented yarn (POY: Partially Oriented Yarn) around a yarn supply bobbin B1. The winding package P2 is formed by winding a draw textured yarn (DTY: Draw Textured Yarn) around a winding bobbin B2. That is, the false twisting machine 1 processes the yarn Y, which is a semi-drawn yarn, to produce a draw textured yarn.

[0027] As shown in Fig. 2, an adapter 8 is attached to the yarn supplying package P1. The adapter 8 holds the yarn Y. The adapter 8 has an attachment portion 81, a first holding portion 82, and a second holding portion 83. The attachment portion 81 is attached to the yarn supplying bobbin B1 of the yarn supplying package P1 so as to be synchronously rotatable. The attachment portion 81 is formed in a cylindrical shape. The attachment portion 81 is attached to an end of the yarn supplying bobbin B1 protruding from the side surface of the yarn supplying package P1.

[0028] The first holding portion 82 holds a yarn end of the yarn Y on the outer layer side (mouth yarn side) of the yarn supply package P1 (hereinafter, the yarn end of the yarn Y on the outer layer side is also referred to as a first yarn end Y1). The first holding portion 82 is provided on the attachment portion 81. The first holding portion 82 has a first arm 821, a first gripping tool 822, and a first yarn guide 823. The base end side of the first arm 821 is fixed to a side surface of the attachment portion 81, and extends along the radial direction of the attachment portion 81. The first gripping tool 822 grips the first yarn end Y1. The first gripping tool 822 is provided on the tip side of the first arm 821. The first yarn guide 823 is provided on the first arm 821.

[0029] The second holding portion 83 holds a yarn end of the yarn Y on the inner layer side (tail yarn side) of the yarn supply package P1 (hereinafter, the yarn end of the yarn Y on the inner layer side is also referred to as the second yarn end Y2). The second holding portion 83 is provided on the attachment portion 81. The second holding portion 83 has a second arm 831, a second gripping tool 832, and a second yarn guide 833. The base end side of the second arm 831 is fixed to a side surface of the attachment portion 81, and extends along the radial direction of the attachment portion 81. The second arm 831 is disposed so as to be positioned in the same straight line as the first arm 821. The second gripping tool 832 grips the second yarn end Y2. The second gripping tool 832 is provided on the tip side of the second arm 831. The second yarn guide 833 is provided on the second arm 831. The first yarn end Y1 and the second yarn end Y2 referred to here refer not only to the tip of the yarn Y but also to a yarn portion having a predetermined length with the tip as a base point.

[0030] In the adapter 8, the first gripping tool 822 grips the first yarn end Y1 of the yarn supply package P1 via the first yarn guide 823 of the first holding part 82, and the second gripping tool 832 grips the second yarn end Y2 pulled out from the inner layer side of the yarn supply package P1 via the first yarn guide 823 of the first holding part 82 and the second yarn guide 833 of the second holding part 83. The adapter 8 is attached to the yarn supply package P1, for example, by an operator. A bobbin cap (not shown) may be attached to the yarn supplying bobbin B1 at an end opposite to the end to which the adapter 8 is attached.

[0031] As shown in Fig. 1, the false twisting machine 1 includes a yarn supplying section 2, a processing section 3, a winding section 4, a main machine base 5, a winding table 6, and a support frame 7. The components of the yarn supplying section 2, the processing section 3, and the winding section 4, which will be described later, are arranged in a plurality of rows in the Y direction (longitudinal direction of the machine base) perpendicular to the running plane of the yarn Y (the plane of the paper in Fig. 1) on which the yarn path from the yarn supplying section 2 through the processing section 3 to the winding section 4 is arranged.

[0032] The yarn supplying section 2 supplies the yarn Y to the processing section 3. The yarn supplying section 2 includes a creel stand 20 that holds a plurality of yarn supply packages P1. As shown in Figs. 1 and 3, the creel stand 20 includes a creel base 21, a first support pillar 22, a second support pillar 23, a partition plate 24, pegs (first mounting portion and second mounting portion) 25, and a clip (locking portion) 29. The creel base 21 is installed on the floor surface or the like, and supports the first support pillar 22 and the second support pillar 23. The first support pillar 22 and the second support pillar 23 are erected on the creel base 21.

[0033] The first support pillars 22 extend along the Z direction (vertical direction). The first support pillars 22 are arranged at equal intervals in the Y direction. The first support pillars 22 are arranged on one side F1 in the X direction of the creel stand 20. The one side F1 in the X direction is the side where the processing unit 3, which will be described in detail later, is arranged, and is the side where the yarn Y is sent out to the processing unit 3 where false twist processing is performed.

[0034] The second support pillars 23 extend along the Z direction. The second support pillars 23 are arranged in pairs in the Y direction, and multiple pairs of second support pillars 23, 23 are arranged in the Y direction. The second support pillars 23 are arranged on the other side F2 in the X direction of the creel stand 20. The other side F2 in the X direction is the side on which a package changing device 9, which will be described in detail later, travels and on which an operator who performs a yarn splicing operation works. A first support pillar 22 group consisting of multiple first support pillars 22 and a second support pillar 23 group consisting of multiple second support pillars 23 are arranged facing each other in the X direction.

[0035] The partition plate 24 is provided so as to straddle the first support pillar 22 and the second support pillar 23. The partition plate 24 is a plate-shaped member, and is arranged at a predetermined interval in the Z direction. The partition plate 24 prevents the yarn supply package P1 from falling off the peg 25.

[0036] The peg 25 supports the yarn supply package P1. The peg 25 is provided on the second support pillar 23. A plurality of pegs 25 (for example, four pegs) are arranged at predetermined intervals in the Z direction of the second support pillar 23. The pegs 25 are arranged between two partition plates 24 in the Z direction. The pegs 25 are arranged in pairs corresponding to the second support pillars 23, 23 arranged in pairs, and multiple sets (pairs) of pegs 25, 25 are arranged in the Y direction.

[0037] With the pegs 25 of this configuration, the yarn Y of the yarn supply package P1 supported by one of the pair of pegs (first peg) 25 can be connected to the yarn Y of the yarn supply package P1 supported by the other of the pair of pegs (second peg) 25. Specifically, the first yarn end Y1 of the yarn supply package P1 supported by one of the pair of pegs 25 is connected to the second yarn end Y2 of the yarn supply package P1 supported by the other of the pair of pegs 25, or the second yarn end Y2 of the yarn supply package P1 supported by one of the pair of pegs 25 is connected to the first yarn end Y1 of the yarn supply package P1 supported by the other of the pair of pegs 25. In this way, one yarn Y is supplied from two yarn supply packages P1, P1 supported by the pair of pegs 25, 25, respectively. That is, the yarn Y can be supplied continuously to the processing section 3.

[0038] The clip 29 is disposed between the pair of pegs 25, 25 in the Y direction. In this embodiment, the clip 29 is disposed at the center of the pair of pegs 25, 25. As shown in FIG. 4, the clip 29 has a pair of plate plates 291, 292, an elastic member 293 for biasing the pair of plate plates 291, 292 toward the partition plate 24, and a shaft portion 294. The pair of plate plates 291, 292 are provided so as to be movable within a predetermined range in the extending direction of the shaft portion 294, and are biased toward the partition plate 24 by the elastic member 293. When the thread Y is disposed between the pair of plate plates 291, 292, it is clamped by the pair of plate plates 291, 292, and the thread Y is locked. The elastic force of the elastic member 293 is appropriately selected or adjusted so that the thread Y is released from the lock by the pair of plate plates 291, 292 when the operator pulls the thread Y.

[0039] As shown in FIG. 5, the peg 25 has a yarn package support portion 251, a peg main body portion 252, a first rotating mechanism 253, a main body support portion 254, and a second rotating mechanism 255.

[0040] The yarn supply package support portion 251 supports the yarn supply package P1. The yarn supply package support portion 251 has package support members 251A and 251B. The package support members 251A and 251B are rod-shaped members. The package support members 251A and 251B are rotatably supported by the peg body portion 252. The package support members 251A and 251B extend in one direction and are arranged at a predetermined interval so as to be parallel to each other. The peg 25 supports the yarn supply package P1 at two points by the package support members 251A and 251B.

[0041] A covering portion 251D is provided at one end of the package support member 251A in the extending direction. A covering portion 251E is provided at one end of the package support member 251B in the extending direction. The covering portions 251D and 251E are formed of, for example, rubber (resin) having a large coefficient of friction. The covering portions 251D and 251E come into contact (abut) with an inner peripheral surface of the yarn supplying bobbin B1 of the winding package P2. One end of the package support member 251A and one end of the package support member 251B are connected by a connecting member 251F.

[0042] The peg body 252 supports the package support member 251A and the package support member 251B so as to be rotatable around the rotation axis. The peg body 252 is provided with a restricting member 252A. The restricting member 252A is formed, for example, in a disk shape. The restricting member 252A is disposed on one side of the peg body 252. The restricting member 252A is attached by inserting the package support member 251A and the package support member 251B therethrough. The restricting member 252A faces an end face of the yarn supply package P1 and restricts the movement of the yarn supply package P1 in the extending direction of the package support member 251A and the package support member 251B. The peg body 252 is formed with an insertion hole 252B. The second support 23 (see FIG. 3) of the creel stand 20 is inserted through the insertion hole 252B.

[0043] The first rotating mechanism 253 has a driven pulley 253A, a driving pulley 253B, a power transmission belt 253C, and a first wheel 253D. The driven pulley 253A is provided at the other end of the package support member 251A. The driving pulley 253B is provided at the other end of the package support member 251B. The power transmission belt 253C is stretched between the driven pulley 253A and the driving pulley 253B. The first wheel 253D is provided on the driving pulley 253B (package support member 251B). In this embodiment, the first wheel 253D is a Geneva wheel constituting a Geneva mechanism. The first wheel 253D is rotated by the rotational drive of a first yarn joining driver 621 or a second yarn joining driver 631 of the yarn joining device 60 described later.

[0044] The body support part 254 is formed in a cylindrical shape. One end of the body support part 254 is connected to the peg body part 252, and the body support part 254 and the peg body part 252 are formed integrally. The hollow part of the body support part 254 communicates with the insertion hole 252B of the peg body part 252. The second support post 23 (see FIG. 3) of the creel stand 20 is inserted into the body support part 254.

[0045] The second rotating mechanism 255 is a Geneva wheel constituting a Geneva mechanism. The second rotating mechanism 255 is connected to the other end of the body support part 254, and the second rotating mechanism 255 and the body support part 254 are integrally formed. The second rotating mechanism 255 is rotated by the drive of a rotating driver 932A of a rotating device 932 described later. The peg body part 252 rotates in accordance with the rotation of the second rotating mechanism 255. This causes the package support members 251A and 251B to rotate.

[0046] The processing section 3 applies false twist processing to the yarn Y supplied from the yarn supplying section 2. As shown in Fig. 1, the processing section 3 includes a twist stop guide 31, a first heating device 32, a cooling device 33, a false twist device 34, a second heating device 35, and feed rollers 36 (feed rollers 361-363). The twist stop guide 31, the first heating device 32, the cooling device 33, the false twist device 34, the second heating device 35, and the feed rollers 36 (feed rollers 361-363) are provided individually for each yarn Y supplied from the yarn supplying section 2, and are arranged in a row in the Y direction.

[0047] The twist stop guide 31 prevents the twist imparted to the yarn Y by the false twist device 34, which will be described later, from propagating upstream of the twist stop guide 31 in the yarn running direction. The first heating device 32 heats the yarn Y fed from the yarn supplying section 2 via a feed roller 361. The cooling device 33 cools the yarn Y heated by the first heating device 32. The false twist device 34 twists the yarn Y. The second heating device 35 heats the yarn Y fed from the false twist device 34 via a feed roller 362.

[0048] A feed roller 361 is provided between the creel stand 20 and the twist stop guide 31, a feed roller 362 is provided between the false twist device 34 and the second heating device 35, and a feed roller 363 is provided between the second heating device 35 and the winding device 41. Each of the feed rollers 36 (feed rollers 361 to 363) includes a drive roller and a driven roller. Each of the feed rollers 36 is also arranged in a row in the Y direction.

[0049] The conveying speed of the yarn Y by the feed roller 362 is faster than the conveying speed of the yarn Y by the feed roller 361, and the yarn Y is stretched between the feed roller 361 and the feed roller 362. The conveying speed of the yarn Y by the feed roller 363 is slower than the conveying speed of the yarn Y by the feed roller 362, and the yarn Y is relaxed between the feed roller 362 and the feed roller 363.

[0050] In the processing section 3 configured as above, the yarn Y drawn between the feed rollers 361 and 362 is twisted by the false twist device 34. The twist formed by the false twist device 34 propagates to the twist stop guide 31, but does not propagate upstream of the twist stop guide 31 in the yarn running direction. The yarn Y to which twist has been imparted while being drawn is heated and heat-set by the first heating device 32, and then cooled by the cooling device 33. The yarn Y is untwisted downstream from the false twist device 34, but each filament is maintained in a false twisted state by the heat setting described above.

[0051] The yarn Y is thermally fixed by the second heating device 35 while being relaxed between the feed rollers 362 and 363. Finally, the yarn Y sent from the feed rollers 363 is wound by the winding device 41 of the winding section 4 to form a winding package P2.

[0052] The winding section 4 includes a winding device 41, a package stocker 42, a doffing device (not shown), etc. The winding device 41 winds the yarn Y that has been false twisted in the processing section 3 to form a winding package P2. The package stocker 42 stores the winding package P2 formed by the winding device 41. The doffing device removes the winding package P2 formed by the winding device 41 and transfers the winding package P2 to the package stocker 42, and also attaches an empty winding bobbin B2 to the winding device 41, etc.

[0053] The package changing device 9 retrieves the yarn supplying bobbin B1 from the peg 25, and attaches the yarn supplying package P1 to the peg 25. As shown in FIG. 6, the package changing device 9 travels along a rail 98. The rail 98 is laid on the floor and extends along the Y direction. That is, the package changing device 9 is provided so as to be able to travel along the Y direction. The package changing device 9 includes a traveling unit 90, a lifting unit 91, a holding unit 92, a changing unit 93, a yarn splicing device 60, and a control unit 94 (see FIG. 11) that controls the operations of the units 90, 91, 92, 93 and the yarn splicing device 60.

[0054] The traveling unit 90 is provided with wheels that travel on rails 98, a drive mechanism, and the like. The traveling unit 90 supports a lifting unit 91, a holding unit 92, and a replacement unit 93. The lifting unit 91 lifts and lowers with an operator on board. The lifting unit 91 is used during maintenance and the like. The lifting unit 91 includes a work platform 911 on which the operator boards, a guide unit 912 that supports the work platform 911 movably in the Z direction, and a drive mechanism (not shown) that drives the work platform.

[0055] The holding unit 92 holds a plurality of (e.g., four) yarn supply packages P1. The holding unit 92 receives the yarn supply package P1 from a package supply device (not shown) and temporarily stores the yarn supply package P1, and also supplies the yarn supply package P1 to the replacement unit 93. The holding unit 92 is provided to be rotatable within a range of approximately 90°. More specifically, the holding unit 92 is provided to be rotatable between a supply position where the holding unit 92 receives the yarn supply package P1 from the package supply device and a supply position (position shown in FIG. 6) where the holding unit 92 supplies the yarn supply package P1 to the replacement unit 93.

[0056] The replacement unit 93 replaces the yarn supplying bobbin B1 with the yarn supplying package P1 in the peg 25. Specifically, the replacement unit 93 collects the yarn supplying bobbin B1 (see FIG. 1) from the peg 25 and attaches the yarn supplying package P1 to the peg 25. The replacement unit 93 is provided adjacent to the holding unit 92. As shown in FIG. 7, the replacement unit 93 includes a base 931, a rotating device 932, a collecting device 933, a supplying device 934, and a rotating table 936. Note that in FIG. 6, the rotating device 932, the collecting device 933, the supplying device 934, the rotating table 936, and the yarn splicing device 60, which will be described in detail later, are not illustrated.

[0057] The base 931 supports the rotating device 932 and a rotating table 936 that supports the recovery device 933, the supply device 934, and the yarn splicing device 60. The base 931 is provided so as to be movable up and down along the Z direction. The rotating device 932 is fixed to the base 931. The rotating device 932 rotates the peg 25 of the creel stand 20. The rotating device 932 has a rotation driver 932A and a rotation arm 932B.

[0058] The rotating driver 932A rotates the second rotating mechanism 255 (see FIG. 5) of the peg 25. The rotating driver 932A is a Geneva driver constituting a Geneva mechanism. The rotating driver 932A rotates by the rotation drive of a motor (not shown). The rotating arm 932B supports the rotating driver 932A. The rotating arm 932B is provided so as to be swingable in the horizontal direction. The rotating arm 932B is driven by, for example, a motor or an air cylinder (not shown). The rotating device 932 is provided so as to correspond to one peg 25 and the other peg 25 provided in a pair on the creel stand 20.

[0059] When the yarn supply package P1 is attached to the peg 25, the rotation device 932 rotates the peg 25 to change the orientation of the peg 25. More specifically, the rotation device 932 swings the rotation arm 932B to engage the rotation driver 932A with the second rotation mechanism 255 of the peg 25. When the rotation driver 932A and the second rotation mechanism 255 are engaged with each other, the rotation device 932 rotates the rotation driver 932A in one direction. When the second rotation mechanism 255 rotates, the main body support part 254 of the peg 25 rotates. As a result, the peg 25 rotates, and the tip part of the yarn supply package support part 251 faces the replacement unit 93 side.

[0060] The recovery device 933 is provided on a rotating table 936 rotatably supported on the base 931. The recovery device 933 recovers the yarn supplying bobbin B1 from the peg 25. The recovery device 933 has a yarn supplying bobbin support portion 933A that supports the yarn supplying bobbin B1. The recovery device 933 supports the yarn supplying bobbin B1 by advancing the yarn supplying bobbin support portion 933A in a state where the yarn supplying bobbin B1 is not supported relative to the peg 25, and recovers the yarn supplying bobbin B1 from the peg 25 by retracting the yarn supplying bobbin support portion 933A in a state where the yarn supplying bobbin B1 is supported relative to the peg 25.

[0061] The supply device 934 is provided on a rotating table 936 rotatably supported on the base 931. The supply device 934 supplies a yarn supply package P1 to the peg 25. The supply device 934 has a yarn supply package supply section 934A that supports the yarn supply package P1. The supply device 934 attaches the yarn supply package P1 to the peg 25 by advancing the yarn supply package supply section 934A in a state where the yarn supply package P1 is supported by the peg 25, and supplies the yarn supply package P1 to the peg 25 by retracting the yarn supply package supply section 934A in a state where the yarn supply package P1 is not supported by the peg 25.

[0062] The package changing device 9 not only collects the yarn supplying bobbin B1 from the peg 25 and attaches the yarn supplying package P1 to the peg 25, but also connects the yarn ends of the pair of yarn supplying packages P1, P1 attached to the pair of pegs 25, 25 of the creel stand 20 (yarn splicing process) and keeps the connected yarn in a state of being held by at least one clip 29 provided on the creel stand 20 (yarn threading process). The yarn splicing process and yarn threading process are performed by a yarn splicing device 9A. The yarn splicing device 9A is configured to include a yarn splicing device 60 and a control unit 94.

[0063] The yarn splicing device 60 is provided on a rotating table 936 rotatably supported on a base 931. The yarn splicing device 60 splices a first yarn end Y1 of a yarn supply package P1 supported by one peg 25 to a second yarn end Y2 of a yarn supply package P1 supported by the other peg 25, or splices a second yarn end Y2 of a yarn supply package P1 supported by one peg 25 to a first yarn end Y1 of a yarn supply package P1 supported by the other peg 25. Hereinafter, the yarn supply package P1 supported by one peg 25 is also referred to as a first yarn supply package P11, and the yarn supply package P1 supported by the other peg 25 is also referred to as a second yarn supply package P12. As shown in FIG. 8, FIG. 9, and FIG. 10, the yarn splicing device 60 includes a yarn hooking mechanism 61, a first rotation mechanism 62, a second rotation mechanism 63, and a yarn splicing mechanism 64.

[0064] The yarn hooking mechanism 61 captures the yarn Y of the yarn supply package P1 and guides the yarn Y to the yarn joining mechanism 64. The yarn hooking mechanism 61 captures a first yarn end Y1 of the first yarn supply package P11 and a second yarn end Y2 of the second yarn supply package P12 and guides them to the yarn joining mechanism 64, or captures the second yarn end Y2 of the first yarn supply package P11 and the first yarn end Y1 of the second yarn supply package P12 and guides them to the yarn joining mechanism 64. The yarn hooking mechanism 61 has a suction gun 611, an arm portion (moving portion) 612, and a hook portion 615.

[0065] The suction gun 611 sucks and captures the yarn Y. The suction gun 611 has a suction pipe 613 and a suction nozzle (suction holding portion) 614. The suction nozzle 614 is provided at the tip of the suction pipe 613. The suction nozzle 614 sucks the yarn Y. A negative pressure source (not shown) is connected to the suction pipe 613. This generates a suction flow in the suction nozzle 614. The base end side of the suction pipe 613 is connected to the arm portion 612. The hook portion 615 is provided at the tip of the suction pipe 613 and at a position facing away from the suction nozzle 614. The hook portion 615 holds and moves the yarn Y intertwined (spliced) by the yarn splicing device 60. The arm portion 612 moves the suction gun 611. The arm portion 612 is configured to include a link mechanism and a plurality of motors. The arm portion 612 is supported by a bracket 616 .

[0066] The first rotation mechanism 62 operates one of the pegs 25 to rotate the first yarn supply package P11. When the yarn Y is guided to the yarn joining mechanism 64 by the yarn hooking mechanism 61, the first rotation mechanism 62 rotates the first yarn supply package P11 to let out the yarn Y from the first yarn supply package P11. The second rotation mechanism 63 operates the other peg 25 to rotate the second yarn supply package P12. When the yarn Y is guided to the yarn joining mechanism 64 by the yarn hooking mechanism 61, the second rotation mechanism 63 rotates the second yarn supply package P12 to let out the yarn Y from the second yarn supply package P12.

[0067] The first rotation mechanism 62 has a first yarn splicing driver 621, a first motor 622, and a first arm portion 623. The first yarn splicing driver 621 is rotatably supported by the first arm portion 623. A first driven pulley 624 is provided on the first yarn splicing driver 621. The first motor 622 is fixed to the first arm portion 623. A first driving pulley 625 is connected to the output shaft of the first motor 622. The first motor 622 drives the first driving pulley 625 to rotate around its axis. A first power transmission belt 626 is stretched between the first driven pulley 624 and the first driving pulley 625. As a result, the first yarn splicing driver 621 rotates by the rotation drive of the first motor 622.

[0068] The second rotation mechanism 63 has a second yarn splicing driver 631, a second motor 632, and a second arm portion 633. The second yarn splicing driver 631 is rotatably supported by the second arm portion 633. The second yarn splicing driver 631 is provided with a second driven pulley 634. The second motor 632 is fixed to the second arm portion 633. A second driving pulley 635 is connected to the output shaft of the second motor 632. The second motor 632 drives the second driving pulley 635 to rotate around its axis. A second power transmission belt 636 is stretched between the second driven pulley 634 and the second driving pulley 635. As a result, the second yarn splicing driver 631 rotates by the rotation drive of the second motor 632.

[0069] The yarn splicing mechanism 64 performs yarn splicing. The yarn splicing mechanism (connecting section) 64 has a splicer 66, a first guide mechanism 67, and a second guide mechanism 68.

[0070] The splicer 66 includes a yarn splicing unit 661, a pair of clamping units 662, 663, a cutter 664 provided in the clamping unit 662, and a cutter 665 provided in the clamping unit 663. The yarn splicing unit 661 intertwines (connects) a first yarn end Y1 of the first yarn supply package P11 with a second yarn end Y2 of the second yarn supply package P12, or intertwines (connects) a second yarn end Y2 of the first yarn supply package P11 with a first yarn end Y1 of the second yarn supply package P12. The pair of clamping units 662, 663 are provided at positions sandwiching the yarn splicing unit 661. The pair of clamping units 662, 663 clamp the yarn Y (the first yarn end Y1 and the second yarn end Y2: see FIG. 14(A)) inserted into the chamber of the yarn splicing unit 661. The cutters 664 and 665 cut off, from the spliced ​​portion of the yarn Y spliced ​​by the yarn splicing unit 661, for example, excess portions including the portion that was sucked and held by the suction nozzle 614.

[0071] The first guide mechanism 67 engages and guides the yarn Y. The first guide mechanism 67 is provided to be able to swing. The first guide mechanism 67 is provided with a potentiometer (not shown) for detecting the tension of the yarn Y. The yarn joining device 60 controls the operation of the first motor 622 of the first rotation mechanism 62 based on the detection result of the potentiometer. That is, the yarn joining device 60 adjusts the rotation amount (payout amount) of the first yarn supplying package P11 based on the detection result of the potentiometer, and pulls out the yarn Y from the first yarn supplying package P11 with a predetermined tension.

[0072] The second guide mechanism 68 engages and guides the yarn Y. The second guide mechanism 68 is provided to be able to swing. The second guide mechanism 68 is provided with a potentiometer (not shown) for detecting the tension of the yarn Y. The yarn joining device 60 controls the operation of the second motor 632 of the second rotation mechanism 63 based on the detection result of the potentiometer. That is, the yarn joining device 60 adjusts the rotation amount (payout amount) of the second yarn supplying package P12 based on the detection result of the potentiometer, and pulls out the yarn Y from the second yarn supplying package P12 with a predetermined tension.

[0073] 7, the turntable 936 is rotatably supported on the base 931. When collecting a yarn supplying bobbin B1, the turntable 936 is rotated so that the yarn supplying bobbin support part 933A is located in front of the target peg 25. When supplying a yarn supplying package P1, the turntable 936 is rotated so that the yarn supplying package supply part 934A is located in front of the target peg 25. When performing a yarn splicing process of the yarn Y by the yarn splicing device 60, the turntable 936 is rotated so that it is located in front of the target peg 25.

[0074] 11, the control unit 94 is an electronic control unit including a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), an I / O port, a communication port, etc. The ROM stores programs for controlling each of the traveling unit 90, the lifting unit 91, the holding unit 92, and the replacement unit 93. Each function of the control unit 94 is executed under the control of the CPU by loading predetermined computer software onto hardware such as the CPU and the main memory unit.

[0075] The control unit 94 controls the suction nozzle 614, the arm unit 612, and the splicer 66 to perform a yarn joining process including a first set operation, a second set operation, and a yarn joining operation (connecting operation). Furthermore, the control unit 94 controls the suction nozzle 614 and the arm unit 612 to perform a yarn threading process including one of the first threading operation and the second threading operation.

[0076] In this embodiment, the first set operation, the second set operation, the yarn joining operation, the first threading operation, and the second threading operation when the yarn Y is unwound from the outer layer side of the second yarn supply package P12 (when the yarn Y is supplied to the processing section 3 from the outer layer side of the second yarn supply package P12) (hereinafter also referred to as the first scene) will be described.

[0077] The first setting operation in the first scene is an operation in which the suction nozzle 614 holds the first yarn end Y1 of the first yarn supply package P11, and moves the suction nozzle 614 so that the arm unit 612 sets the first yarn end Y1 of the first yarn supply package P11 in the splicer 66. The second setting operation is an operation in which the suction nozzle 614 holds the second yarn end Y2 of the second yarn supply package P12, and moves the suction nozzle 614 so that the arm unit 612 sets the second yarn end Y2 of the second yarn supply package P12 in the splicer 66. The yarn joining operation is an operation in which the splicer 66 joins the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12 after the first and second setting operations.

[0078] The first yarn threading operation in the first scene is an operation in which, before the first set operation, the suction nozzle 614 holds the first yarn end Y1 of the first yarn supply package P11, and the suction nozzle 614 is moved so that the arm unit 612 locks the yarn Y of the first yarn supply package P11 to the clip 29. The second yarn threading operation in the first scene is an operation in which, before the second set operation, the suction nozzle 614 holds the second yarn end Y2 of the second yarn supply package P12, and the suction nozzle 614 is moved so that the arm unit 612 locks the yarn Y of the second yarn supply package P12 to the clip 29. In the first scene, only one of the first yarn threading operation and the second yarn threading operation is performed.

[0079] Next, in this embodiment, the first set operation, the second set operation, the yarn joining operation, the first threading operation, and the second threading operation when the yarn Y is unwound from the outer layer side of the first yarn supply package P11 (when the yarn Y is supplied to the processing section 3 from the outer layer side of the first yarn supply package P11) (hereinafter also referred to as the second scene) will be described.

[0080] The first setting operation in the second scene is an operation in which the suction nozzle 614 holds the second yarn end Y2 of the first yarn supply package P11, and moves the suction nozzle 614 so that the arm unit 612 sets the second yarn end Y2 of the first yarn supply package P11 in the splicer 66. The second setting operation is an operation in which the suction nozzle 614 holds the first yarn end Y1 of the second yarn supply package P12, and moves the suction nozzle 614 so that the arm unit 612 sets the first yarn end Y1 of the second yarn supply package P12 in the splicer 66. The yarn joining operation is an operation in which the splicer 66 joins the second yarn end Y2 of the first yarn supply package P11 and the first yarn end Y1 of the second yarn supply package P12 after the first and second setting operations.

[0081] The first yarn threading operation in the second scene is an operation of holding the second yarn end Y2 of the first yarn supply package P11 by the suction nozzle 614 before the first set operation, and moving the suction nozzle 614 so that the yarn Y of the first yarn supply package P11 is locked by the clip 29 by the arm unit 612. The second yarn threading operation in the second scene is an operation of holding the first yarn end Y1 of the second yarn supply package P12 by the suction nozzle 614 before the second set operation, and moving the suction nozzle 614 so that the yarn Y of the second yarn supply package P12 is locked by the clip 29 by the arm unit 612. In the second scene, only one of the first yarn threading operation and the second yarn threading operation is performed.

[0082] A series of operations including the yarn splicing process and the yarn hooking process in the yarn splicing device 9A will be described in detail below with reference to Figures 10 to 15. Here, a case will be described as an example in which the yarn splicing device 60 splices a first yarn end Y1 of the first yarn supply package P11 supported by one peg 25 and a second yarn end Y2 of the second yarn supply package P12 supported by the other peg 25 when the yarn Y is unwound from the outer layer side of the second yarn supply package P12 (in the first scene described above).

[0083] When the yarn splicing device 9A starts the yarn splicing operation, as shown in FIG. 10, it operates one of the pegs 25 using the first rotation mechanism 62 and operates the other peg 25 using the second rotation mechanism 63, and rotates the adapter 8 to a position where the suction nozzle 614 can capture the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12 (step S1 in FIG. 12).

[0084] Specifically, the control unit 94 drives the first motor 622 to rotate the first yarn splicing driver 621 engaged with the first wheel 253D of one of the pegs 25. When the first yarn splicing driver 621 rotates, the first yarn supply package P11 rotates, and the adapter 8 rotates accordingly. The control unit 94 drives the second motor 632 to rotate the second yarn splicing driver 631 engaged with the first wheel 253D of the other peg 25. When the second yarn splicing driver 631 rotates, the second yarn supply package P12 rotates, and the adapter 8 rotates accordingly. The control unit 94 controls the first motor 622 and the second motor 632 based on the detection result of a sensor (not shown) that detects a detection body (not shown) provided on the adapter 8, to rotate the adapter 8 to a predetermined position.

[0085] The control unit 94 activates the suction gun 611 (step S2 in FIG. 12). This enables the suction gun 611 to suck and hold the yarn Y at the suction nozzle 614. The control unit 94 controls the arm unit 612 to cause the suction nozzle 614 to capture (hold) the first yarn end Y1 of the first yarn supply package P11 (step S3 in FIG. 12). Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the clip 29 as shown in FIG. 13(A), and hook (lock) the yarn Y of the first yarn supply package P11 on the clip 29 (step S4 in FIG. 12: first yarn hooking operation). More specifically, the yarn Y of the first yarn supply package P11 is held by being clamped between the pair of disc plates 291, 292 of the clip 29.

[0086] Next, with the yarn Y of the first yarn supply package P11 hooked on the clip 29, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 holding the first yarn end Y1 of the first yarn supply package P11 to the first guide mechanism 67 as shown in Fig. 13(B) and hook the yarn Y of the first yarn supply package P11 onto the first guide mechanism 67. Based on the detection result of the potentiometer provided in the first guide mechanism 67, the control unit 94 adjusts the rotation amount (payout amount) of the first yarn supply package P11 and causes the yarn Y to be pulled out from the first yarn supply package P11 with a predetermined tension. Furthermore, with the yarn Y of the first yarn supply package P11 hooked onto the first guide mechanism 67, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the yarn joining mechanism 64, thereby setting (guiding) the first yarn end Y1 of the first yarn supply package P11 to the yarn joining mechanism 64 (step S5 in Figure 12: first setting operation).

[0087] Next, the control unit 94 controls the suction nozzle 614 to capture (hold) the second yarn end Y2 of the second yarn supply package P12 (Step S6 in FIG. 12). Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 holding the second yarn end Y2 of the second yarn supply package P12 to the yarn joining mechanism 64 as shown in FIG. 14(A), and set (guide) the second yarn end Y2 of the second yarn supply package P12 to the yarn joining mechanism 64 (Step S7 in FIG. 12: second setting operation).

[0088] Next, the control unit 94 controls the splicer 66 of the yarn splicing device 60 to splice (connect) the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12 as shown in Fig. 14(B). In addition, the control unit 94 controls the cutters 664, 665 of the yarn splicing device 60 to cut and remove excess portions, including, for example, a portion sucked and held by the suction nozzle 614, from the yarn splice portion between the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12 (Step S8 in Fig. 12: yarn splicing operation (connecting operation)).

[0089] Next, the control unit 94 stops the suction gun 611 (step S9 in FIG. 12). Next, the control unit 94 controls the arm unit 612 to hook (hold) the spliced ​​yarn on the hook unit 615, and then moves the hook unit 615 to the outside of the yarn splicing mechanism 64. As a result, as shown in FIG. 15(A), the spliced ​​yarn Y is released from the yarn splicing mechanism 64, the first guide mechanism 67, and the second guide mechanism 68, and is moved to the outside of the yarn splicing device 60 (step S10 in FIG. 12).

[0090] Next, the control unit 94 controls the first motor 622 and the second motor 632 to rotate the first yarn joining driver 621 and the second yarn joining driver 631, and rotate the first yarn supply package P11 and the second yarn supply package P12 as shown in Fig. 15(B). This makes it possible to remove slack in the joined yarn Y that is hooked on the clip 29 (step S11 in Fig. 12).

[0091] In the yarn splicing device 9A of the above embodiment, unlike the conventional work order by an operator, the yarn Y is threaded on the clip 29 before the yarn Y is spliced. A suction force is always acting in the suction direction on the yarns Y, Y of the first yarn supply package P11 and the second yarn supply package P12 held by the suction nozzle 614, so that tension is applied to the yarn Y portions extending from the first yarn supply package P11 and the second yarn supply package P12 to the suction nozzle 614. The arm portion 612 can move the first yarn end Y1 (or the second yarn end Y2) in a taut state, and therefore can move the yarn Y more precisely than when the first yarn end Y1 (or the second yarn end Y2) of the yarn Y that is irregularly slack is moved, and therefore the yarn Y can be threaded on the clip 29 with high accuracy.

[0092] In addition, since the yarn Y is held by suction by the suction nozzle 614, the yarn is not damaged when the yarn Y is gripped. When the yarn Y in which the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12 are connected, or the yarn Y in which the first yarn end Y1 of the second yarn supply package P12 and the second yarn end Y2 of the first yarn supply package P11 are connected, is sucked into the suction nozzle 614 in a bent state, and the yarn Y is damaged. However, in the configuration of the above embodiment, the yarn Y is held by sucking the first yarn end Y1 or the second yarn end Y2 of the first yarn supply package P11, and the second yarn end Y2 or the first yarn end Y1 of the second yarn supply package P12, and the yarn Y is not bent as described above. Therefore, even if the yarn Y of the first yarn supply package P11 and the second yarn supply package P12 is held by the suction nozzle 614, the yarn Y is not damaged. As a result, it is possible to realize automation of a series of operations including the yarn joining process and the threading process while maintaining both the yarn quality and improving the operation accuracy.

[0093] The above describes an embodiment of one aspect of the present invention, but the one aspect of the present invention is not necessarily limited to the above-described embodiment, and various modifications are possible without departing from the gist of the present invention.

[0094] (Variation 1) In the creel stand 20 of the above embodiment, an example has been described in which only one clip 29 is disposed between the pair of pegs 25, 25 in the Y direction as shown in Fig. 3, but the present invention is not limited to this. For example, as shown in Fig. 16, the creel stand 20 may have two clips 29A, 29B disposed between the pair of pegs 25, 25 in the Y direction.

[0095] That is, the creel stand 20 according to the first modification includes a first clip (locking portion, first locking portion) 29A disposed at a position farther from the second yarn supply package P12 supported by one peg 25 than the first yarn supply package P11 supported by the other peg 25, and a second clip (locking portion, second locking portion) 29B disposed at a position closer to the second yarn supply package P12 supported by the other peg 25 than the first yarn supply package P11 supported by the one peg 25. The first clip 29A of the creel stand 20 according to the first modification is disposed closer to the one peg 25 supporting the first yarn supply package P11 than the center between the pair of pegs 25, 25, and the second clip 29B is disposed closer to the other peg 25 supporting the second yarn supply package P12 than the center between the pair of pegs 25, 25.

[0096] The control unit 94 of the yarn splicing device 9A according to the first modification controls the suction nozzle 614, the arm unit 612, and the splicer 66 to perform a yarn splicing process including a first set operation, a second set operation, and a yarn splicing operation (connecting operation). The first set operation, the second set operation, and the yarn splicing operation in the first scene (when the yarn Y is unwound from the outer layer side of the second yarn supply package P12) and the second scene (when the yarn Y is unwound from the outer layer side of the first yarn supply package P11) are the same as those in the above embodiment, and therefore detailed description thereof will be omitted. In the yarn splicing device 9A according to the first modification, unlike the above embodiment, the control unit 94 controls the suction nozzle 614 and the arm unit 612 to perform a yarn threading process including both the first threading operation and the second threading operation in each of the first scene and the second scene.

[0097] The first yarn threading operation in the first scene is an operation of holding the first yarn end Y1 of the first yarn supply package P11 by the suction nozzle 614 before the first set operation, and moving the suction nozzle 614 so that the yarn Y of the first yarn supply package P11 is locked to the first clip 29A by the arm portion 612. The second yarn threading operation in the first scene is an operation of holding the second yarn end Y2 of the second yarn supply package P12 by the suction nozzle 614 before the second set operation, and moving the suction nozzle 614 so that the yarn Y of the second yarn supply package P12 is locked to the second clip 29B by the arm portion 612.

[0098] The first yarn threading operation in the second scene is an operation of, before the first set operation, causing the suction nozzle 614 to hold the second yarn end Y2 of the first yarn supply package P11 and moving the suction nozzle 614 so that the yarn Y of the first yarn supply package P11 is locked to the first clip 29A by the arm portion 612. The second yarn threading operation in the second scene is an operation of, before the second set operation, causing the suction nozzle 614 to hold the first yarn end Y1 of the second yarn supply package P12 and moving the suction nozzle 614 so that the yarn Y of the second yarn supply package P12 is locked to the second clip 29B by the arm portion 612.

[0099] Even in a configuration including the first clip 29A and the second clip 29B, only one of the first threading operation and the second threading operation may be executed in each of the first and second scenes.

[0100] A series of operations including the yarn splicing process and the yarn hooking process in the yarn splicing device 9A will be described in detail below with reference to Figures 17 to 19. Here, too, an example will be described in which the yarn splicing device 60 splices a first yarn end Y1 of the first yarn supply package P11 supported by one peg 25 and a second yarn end Y2 of the second yarn supply package P12 supported by the other peg 25 when the yarn Y is unwound from the outer layer side of the second yarn supply package P12 (in the first scene described above).

[0101] As in the above embodiment, the control unit 94 drives the first motor 622 and the second motor 632 to rotate the adapter 8 (the first yarn supply package P11 and the second yarn supply package P12) to a position where the suction nozzle 614 can capture the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12 (step S21 in Figure 17).

[0102] The control unit 94 activates the suction gun 611 (step S22 in FIG. 17). This enables the suction gun 611 to suck and hold the yarn Y at the suction nozzle 614. The control unit 94 controls the arm unit 612 to cause the suction nozzle 614 to capture (hold) the first yarn end Y1 of the first yarn supply package P11 (step S23 in FIG. 17). Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the first clip 29A as shown in FIG. 18(A), and hook the yarn Y of the first yarn supply package P11 onto the first clip 29A (step S24 in FIG. 17: first yarn hooking operation).

[0103] Next, with the yarn Y of the first yarn supply package P11 hooked on the first clip 29A, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 holding the first yarn end Y1 of the first yarn supply package P11 to the first guide mechanism 67 as shown in Fig. 18(A) and hook the yarn Y of the first yarn supply package P11 on the first guide mechanism 67. Based on the detection result of the potentiometer provided in the first guide mechanism 67, the control unit 94 adjusts the rotation amount (payout amount) of the first yarn supply package P11 and causes the yarn Y to be pulled out from the first yarn supply package P11 with a predetermined tension. Furthermore, with the yarn Y of the first yarn supply package P11 hooked onto the first guide mechanism 67, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the yarn joining mechanism 64, and sets (guides) the first yarn end Y1 of the first yarn supply package P11 to the yarn joining mechanism 64 (step S25 in Figure 17: first setting operation).

[0104] Next, the control unit 94 controls the suction nozzle 614 to capture (hold) the second yarn end Y2 of the second yarn supply package P12 (Step S26 in FIG. 17). Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the second clip 29B as shown in FIG. 18(B), and hook the yarn Y of the second yarn supply package P12 onto the second clip 29B (Step S27 in FIG. 17: second yarn hooking operation).

[0105] Next, with the yarn Y of the second yarn supply package P12 hooked on the second clip 29B, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 holding the second yarn end Y2 to the second guide mechanism 68 as shown in FIG. 18(B), and hook the yarn Y of the second yarn supply package P12 on the second guide mechanism 68. Based on the detection result of the potentiometer provided on the second guide mechanism 68, the control unit 94 adjusts the rotation amount (feed-out amount) of the second yarn supply package P12, and pulls out the yarn Y from the second yarn supply package P12 with a predetermined tension. Furthermore, with the yarn Y of the second yarn supply package P12 hooked on the second guide mechanism 68, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the yarn joining mechanism 64, and sets (guides) the second yarn end Y2 of the second yarn supply package P12 to the yarn joining mechanism 64 (step S28 in FIG. 17: second setting operation).

[0106] Next, the control unit 94 controls the splicer 66 of the yarn splicing device 60 to splice (connect) the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12. In addition, the control unit 94 controls the cutters 664, 665 of the yarn splicing device 60 to cut and remove excess portions, including, for example, a portion sucked and held by the suction nozzle 614, from the yarn splice portion between the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12 (Step S29 in FIG. 17: yarn splicing operation (connecting operation)).

[0107] Next, the control unit 94 stops the suction gun 611 (step S30 in FIG. 17). Next, the control unit 94 controls the arm unit 612 to hook (hold) the spliced ​​yarn on the hook unit 615, and then moves the hook unit 615 to the outside of the yarn splicing mechanism 64. As a result, as shown in FIG. 19(A), the spliced ​​yarn Y is released from the yarn splicing mechanism 64, the first guide mechanism 67, and the second guide mechanism 68, and is moved to the outside of the yarn splicing device 60 (step S31 in FIG. 17).

[0108] Next, the control unit 94 controls the first motor 622 and the second motor 632 to rotate the first yarn joining driver 621 and the second yarn joining driver 631, and rotate the first yarn supply package P11 and the second yarn supply package P12 as shown in Fig. 19(B). This makes it possible to remove slack in the joined yarn Y that is hooked on the clip 29 (step S32 in Fig. 17).

[0109] In the yarn splicing device 9A and the yarn supplying device 100 according to the first modification, the yarn Y is hooked by both the first clip 29A and the second clip 29B by the first threading operation and the second threading operation, so that a more stable hooking state can be obtained.

[0110] (Variation 2) As a further modification of the above embodiment, for example, as shown in FIG. 20, the creel stand 20 may have four clips 29C, 29D, 29E, and 29F disposed between a pair of pegs 25, 25 in the Y direction.

[0111] That is, the creel stand 20 according to the second modification is disposed at a position farther from the second yarn supply package P12 supported by one of the pegs 25 than from the first yarn supply package P11 supported by the other peg 25, and a pair of first inner layer side clips (locking portion, first locking portion, first inner layer side locking portion) 29C and a pair of first outer layer side clips (locking portion, first locking portion, first outer layer side locking portion) 29C are provided corresponding to the second yarn end Y2 of the first yarn supply package P11 and the first yarn end Y1 of the first yarn supply package P11, respectively. The second inner layer side clip (locking portion, second locking portion, second inner layer side locking portion) 29E and the second outer layer side clip (locking portion, second locking portion, second outer layer side locking portion) 29F are arranged at a position closer to the second yarn supply package P12 supported by the other peg 25 than the first yarn supply package P11 supported by the other peg 25, and are provided corresponding to the second yarn end Y2 of the second yarn supply package P12 and the first yarn end Y1 of the second yarn supply package P12, respectively.

[0112] The first inner layer clip 29C, the first outer layer clip 29D, the second inner layer clip 29E, and the second outer layer clip 29F of this modified example 2 are fixed to the partition plate 24 via the bracket 24A. The first inner layer clip 29C and the first outer layer clip 29D are oriented differently from each other (the orientation of the pair of dish plates 291, 292). The second inner layer clip 29E and the second outer layer clip 29F are oriented differently from each other.

[0113] The control unit 94 of the yarn splicing device 9A according to the second modification controls the suction nozzle 614, the arm unit 612, and the splicer 66 to perform a yarn splicing process including a first threading operation, a second threading operation, a first set operation, a second set operation, and a yarn splicing operation (connecting operation).

[0114] The first threading operation in the first scene (when the yarn Y is unwound from the outer layer side of the second yarn supply package P12) is an operation in which the suction nozzle 614 holds the first yarn end Y1 of the first yarn supply package P11, and the suction nozzle 614 is moved so that the arm portion 612 holds the yarn Y of the first yarn supply package P11 at the first outer layer side clip 29D. The second threading operation in the first scene is an operation in which the suction nozzle 614 holds the second yarn end Y2 of the second yarn supply package P12, and the suction nozzle 614 is moved so that the arm portion 612 holds the yarn Y of the second yarn supply package P12 at the second inner layer side clip 29E. Note that both the first threading operation and the second threading operation are performed in the first scene.

[0115] The first setting operation in the first scene is an operation of holding the first yarn end Y1 of the first yarn supply package P11 by the suction nozzle 614, and moving the suction nozzle 614 so that the first yarn end Y1 of the first yarn supply package P11 is set in the yarn joining mechanism 64 by the arm unit 612. The second setting operation in the first scene is an operation of holding the second yarn end Y2 of the second yarn supply package P12 by the suction nozzle 614, and moving the suction nozzle 614 so that the second yarn end Y2 of the second yarn supply package P12 is set in the yarn joining mechanism 64 by the arm unit 612. The yarn joining operation in the first scene is an operation of connecting the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12.

[0116] The first yarn threading operation in the second scene (when the yarn Y is unwound from the outer layer side of the first yarn supply package P11) is an operation of holding the second yarn end Y2 of the first yarn supply package P11 by the suction nozzle 614 and moving the suction nozzle 614 so that the yarn Y of the first yarn supply package P11 is locked to the first inner layer side clip 29C by the arm portion 612. The second yarn threading operation in the second scene is an operation of holding the first yarn end Y1 of the second yarn supply package P12 by the suction nozzle 614 and moving the suction nozzle 614 so that the yarn Y of the second yarn supply package P12 is locked to the second outer layer side clip 29F by the arm portion 612. Note that both the first yarn threading operation and the second yarn threading operation are performed in the second scene.

[0117] The first setting operation in the second scene is an operation of holding the second yarn end Y2 of the first yarn supply package P11 by the suction nozzle 614, and moving the suction nozzle 614 so that the second yarn end Y2 of the first yarn supply package P11 is set in the yarn joining mechanism 64 by the arm unit 612. The second setting operation in the second scene is an operation of holding the first yarn end Y1 of the second yarn supply package P12 by the suction nozzle 614, and moving the suction nozzle 614 so that the first yarn end Y1 of the second yarn supply package P12 is set in the yarn joining mechanism 64 by the arm unit 612. The yarn joining operation in the second scene is an operation of connecting the second yarn end Y2 of the first yarn supply package P11 and the first yarn end Y1 of the second yarn supply package P12.

[0118] Furthermore, even in a configuration including a first inner layer clip 29C, a first outer layer clip 29D, a second inner layer clip 29E, and a second outer layer clip 29F, only one of the first threading operation and the second threading operation may be performed in each of the first and second scenes.

[0119] A series of operations including the yarn splicing process and the yarn hooking process in the yarn splicing device 9A will be described in detail below with reference to Figures 21 and 22. Here, as in the above embodiment, an example will be described in which the yarn splicing device 60 splices the first yarn end Y1 of the first yarn supplying package P11 and the second yarn end Y2 of the second yarn supplying package P12 when the yarn Y is unwound from the outer layer side of the second yarn supplying package P12 (in the above first scene).

[0120] As in the above embodiment, the control unit 94 drives the first motor 622 and the second motor 632 to rotate the adapter 8 (the first yarn supply package P11 and the second yarn supply package P12) to a position where the suction nozzle 614 can capture the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12 (step S41 in FIG. 21). The control unit 94 starts the suction gun 611 (step S42 in FIG. 21). This enables the suction gun 611 to suck and hold the yarn Y at the suction nozzle 614. The control unit 94 controls the arm unit 612 to cause the suction nozzle 614 to capture (hold) the first yarn end Y1 of the first yarn supply package P11 (step S43 in FIG. 21). Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the first outer layer clip 29D, as shown in FIG. 22(A), and hook the yarn Y of the first yarn supply package P11 onto the first outer layer clip 29D (step S44 in FIG. 21: first yarn hooking operation).

[0121] Next, with the yarn Y of the first yarn supply package P11 hooked on the first outer layer clip 29D, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 holding the first yarn end Y1 of the first yarn supply package P11 to the first guide mechanism 67, and hooks the yarn Y of the first yarn supply package P11 on the first guide mechanism 67. Based on the detection result of the potentiometer provided on the first guide mechanism 67, the control unit 94 adjusts the rotation amount (feed-out amount) of the first yarn supply package P11, and pulls out the yarn Y from the first yarn supply package P11 with a predetermined tension. Furthermore, with the yarn Y of the first yarn supply package P11 hooked on the first guide mechanism 67, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the yarn joining mechanism 64, and sets (guides) the first yarn end Y1 of the first yarn supply package P11 to the yarn joining mechanism 64 (step S45 in FIG. 21: first setting operation).

[0122] Next, the control unit 94 controls the suction nozzle 614 to capture (hold) the second yarn end Y2 of the second yarn supply package P12 (Step S46 in FIG. 21). Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the second inner layer clip 29E and hook the yarn Y of the second yarn supply package P12 onto the second inner layer clip 29E (Step S47 in FIG. 21: second yarn hooking operation).

[0123] Next, with the yarn Y of the second yarn supply package P12 hooked on the second inner layer side clip 29E, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 holding the second yarn end Y2 of the second yarn supply package P12 to the second guide mechanism 68, and hooks the yarn Y of the second yarn supply package P12 on the second guide mechanism 68. Based on the detection result of the potentiometer provided on the second guide mechanism 68, the control unit 94 adjusts the rotation amount (feed-out amount) of the second yarn supply package P12, and pulls out the yarn Y from the second yarn supply package P12 with a predetermined tension. Furthermore, with the yarn Y of the second yarn supply package P12 hooked on the second guide mechanism 68, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the yarn joining mechanism 64, and sets (guides) the second yarn end Y2 of the second yarn supply package P12 to the yarn joining mechanism 64 (step S48 in FIG. 21: second setting operation). The subsequent processes (steps S49 to S52 in FIG. 21) are the same as steps S8 to S11 in FIG. 12 in the above embodiment, and therefore will not be described here.

[0124] In addition, when the yarn Y is being unwound from the outer layer side of the first yarn supplying package P11 (when the yarn Y is being supplied to the processing section 3 from the outer layer side of the first yarn supplying package P11) (second scene), the yarn joining device 60 joins the first yarn end Y1 of the second yarn supplying package P12 and the second yarn end Y2 of the first yarn supplying package P11.

[0125] Specifically, the control unit 94 controls the arm unit 612 to capture (hold) the second yarn end Y2 of the first yarn supply package P11 by the suction nozzle 614. Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the first inner layer clip 29C as shown in Fig. 22(B) and hook the yarn Y of the first yarn supply package P11 onto the first inner layer clip 29C (first yarn hooking operation).

[0126] Next, with the yarn Y of the first yarn supply package P11 hooked on the first inner layer side clip 29C, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 holding the second yarn end Y2 of the first yarn supply package P11 to the first guide mechanism 67, and hooks the yarn Y of the first yarn supply package P11 on the first guide mechanism 67. Based on the detection result of the potentiometer provided on the first guide mechanism 67, the control unit 94 adjusts the rotation amount (feed-out amount) of the first yarn supply package P11, and pulls out the yarn Y from the first yarn supply package P11 with a predetermined tension. Furthermore, with the yarn Y of the first yarn supply package P11 hooked on the first guide mechanism 67, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the yarn joining mechanism 64, and sets (guides) the second yarn end Y2 of the first yarn supply package P11 to the yarn joining mechanism 64 (first setting operation).

[0127] Next, the control unit 94 causes the suction nozzle 614 to capture (hold) the first yarn end Y1 of the second yarn supply package P12. Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the second outer layer clip 29F, and hooks the yarn Y of the second yarn supply package P12 onto the second outer layer clip 29F (second yarn hooking operation).

[0128] Next, with the yarn Y of the second yarn supply package P12 hooked on the second outer layer side clip 29F, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 holding the first yarn end Y1 of the second yarn supply package P12 to the second guide mechanism 68, and hooks the yarn Y of the second yarn supply package P12 on the second guide mechanism 68. Based on the detection result of the potentiometer provided on the second guide mechanism 68, the control unit 94 adjusts the rotation amount (feed-out amount) of the second yarn supply package P12, and pulls out the yarn Y from the second yarn supply package P12 with a predetermined tension. Furthermore, with the yarn Y of the second yarn supply package P12 hooked on the second guide mechanism 68, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the yarn joining mechanism 64, and sets (guides) the first yarn end Y1 of the second yarn supply package P12 to the yarn joining mechanism 64 (second setting operation). The subsequent process for removing the slack in the yarn Y is as described above, and therefore will not be described here.

[0129] In the yarn splicing device 9A and the yarn supplying device 100 according to the second modification, clips (first inner layer clip 29C, first outer layer clip 29D, second inner layer clip 29E, and second outer layer clip 29F) are provided corresponding to the inner layer yarn Y of the first yarn supplying package P11, the outer layer yarn Y of the first yarn supplying package P11, the inner layer yarn Y of the second yarn supplying package P12, and the outer layer yarn Y of the second yarn supplying package P12, respectively. This allows each clip to be provided in a more appropriate position and orientation. As a result, the accuracy and stability of yarn threading at each clip can be further improved.

[0130] (Other variations) The above embodiment and modified example of the creel stand 20 have been described using an example in which the clip 29 is positioned in the center of a pair of pegs 25, but the clip 29 may also be positioned closer to either one of the pair of pegs 25.

[0131] In the above embodiment and modified example of the yarn splicing device 9A, an example has been described in which the yarn Y is hooked to one hooking portion in one threading operation. However, the yarn Y may be hooked to multiple hooking portions in one threading operation.

[0132] In the above embodiment and modified example, the suction gun 611 having the suction nozzle 614 and the hook portion 615 has been described as an example of the threading mechanism 61 that guides the yarn Y to each of the clips 29, 29A to 29F and guides the yarn Y to the yarn joining mechanism 64. However, the hook portion 615 does not have to be provided. In this case, instead of moving the hook portion 615 to move the spliced ​​yarn Y out of the yarn joining device 60, the yarn joining device 60 may move backward to move the spliced ​​yarn Y out of the yarn joining device 60.

[0133] In the above embodiment and modified example, the control unit 94, which comprehensively controls the traveling unit 90, the lifting unit 91, the holding unit 92, and the replacing unit 93 of the package replacing device 9, controls the yarn joining device 60. However, the present invention is not limited to this. The control unit 94 may be provided exclusively for controlling the yarn joining device 60. Furthermore, the control unit 94 does not have to be provided in the package replacing device 9, and may be provided at a position remote from the package replacing device 9 so as to be able to communicate with the package replacing device 9 via wired or wireless communication.

[0134] Although the yarn splicing device 9A of the above embodiment and modified example has been described as including the first rotation mechanism 62 and the second rotation mechanism 63, a yarn splicing device 60 not including the first rotation mechanism 62 and the second rotation mechanism 63 may be provided. In this case, for example, in the yarn splicing device 9A of the above embodiment, the operation of rotating the yarn supply package P1 (steps S1, S5, S7, S11, etc. in FIG. 12) is omitted. Similarly, in the modified example, in the yarn splicing device 9A of the above embodiment, the operation of rotating the yarn supply package P1 is omitted.

[0135] In the above embodiment and modified examples, the false twisting machine 1 has been described as an example of a yarn processing device, but the present invention is not limited thereto. That is, the processing unit 3 has been described as an example of a device that performs twisting (false twisting), but the present invention may be applied to a device that performs non-twisting (air jet) yarn processing. [Explanation of symbols]

[0136] 1... false twisting machine, 20... creel stand (yarn supply stand), 25... peg (first mounting portion, second mounting portion), 29... clip (locking portion), 29A... first clip (locking portion, first locking portion), 29B... second clip (locking portion, second locking portion), 29C... first inner layer clip (locking portion, first locking portion), 29D... first outer layer clip (locking portion, first locking portion), 29E... second inner layer clip (locking portion, second locking portion), 29F... second Outer layer side clip (locking portion / second locking portion), 60...yarn splicing device, 611...suction gun, 612...arm portion (moving portion), 613...suction pipe, 614...suction nozzle (suction holding portion), 64...yarn splicing mechanism (connecting portion), 66...splicer, 9...package changing device, 9A...yarn splicing processing device, 94...control portion, 100...yarn feeding device, P1...yarn feeding package, P11...first yarn feeding package, P12...second yarn feeding package, Y...yarn.

Claims

1. A yarn splicing device for connecting a yarn end of a first yarn supply package and a yarn end of a second yarn supply package attached to a yarn supply stand, and for holding the connected yarn in at least one holding portion provided on the yarn supply stand, comprising: a suction holding unit that holds the yarn by sucking the yarn; A moving unit that moves the suction and hold unit; a connection portion that connects a yarn end of the first yarn supply package and a yarn end of the second yarn supply package; a control unit that controls the suction and hold unit, the movement unit, and the connection unit, The control unit is a first set operation in which the suction holding unit holds the yarn end of the first yarn supply package, and the moving unit moves the suction holding unit so that the yarn end of the first yarn supply package is set in the connection unit; a second set operation in which the suction holding unit holds the yarn end of the second yarn supply package, and the moving unit moves the suction holding unit so that the yarn end of the second yarn supply package is set in the connection unit; a connecting operation of connecting a yarn end of the first yarn supply package and a yarn end of the second yarn supply package by the connecting portion after the first set operation and the second set operation; and controlling the suction and holding unit, the moving unit, and the connecting unit so as to perform a yarn joining process including a first yarn threading operation, before the first set operation, in which the suction and holding unit holds a yarn end of the first yarn supply package, and the moving unit moves the suction and holding unit so that the yarn of the first yarn supply package is locked to the locking unit; a second yarn threading operation in which, before the second set operation, the suction and holding unit holds the yarn end of the second yarn supply package, and the moving unit moves the suction and holding unit so that the yarn of the second yarn supply package is locked to the locking unit; The suction and holding unit and the moving unit are controlled to perform a threading process including at least one of the operations The yarn splicing device is movable relative to the yarn supply stand.

2. The locking portion includes a first locking portion and a second locking portion, the first yarn hooking operation is an operation of moving the suction and hold unit so that the yarn of the first yarn supply package is hooked to the first hooking unit, the second yarn threading operation is an operation of moving the suction and hold portion so that the yarn of the second yarn supply package is locked to the second locking portion. The yarn splicing device according to claim 1.

3. The first fastening portion includes a first inner layer side fastening portion and a first outer layer side fastening portion, The second fastening portion includes a second inner layer side fastening portion and a second outer layer side fastening portion, the first yarn threading operation when a yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding a yarn end on an inner layer side of the first yarn supply package by the suction and holding unit, and moving the suction and holding unit so that the yarn of the first yarn supply package is locked by the first inner layer side locking unit by the moving unit, the second yarn threading operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding the outer layer side yarn end of the second yarn supply package by the suction and holding unit, and moving the suction and holding unit so that the yarn of the second yarn supply package is locked by the second outer layer side locking unit by the moving unit, the first setting operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding the yarn end on the inner layer side of the first yarn supply package by the suction and holding unit, and moving the suction and holding unit by the moving unit so that the yarn end on the inner layer side of the first yarn supply package is set in the connection unit, the second setting operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding the yarn end on the outer layer side of the second yarn supply package by the suction and holding unit, and moving the suction and holding unit by the moving unit so that the yarn end on the outer layer side of the second yarn supply package is set in the connection unit, the connecting operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of connecting a yarn end on an inner layer side of the first yarn supply package to a yarn end on an outer layer side of the second yarn supply package, the first yarn threading operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the outer layer side yarn end of the first yarn supply package by the suction and holding unit, and moving the suction and holding unit so that the yarn of the first yarn supply package is locked by the first outer layer side locking unit by the moving unit, the second yarn threading operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the inner layer side of the second yarn supply package by the suction and holding unit, and moving the suction and holding unit so that the yarn of the second yarn supply package is locked by the second inner layer side locking unit by the moving unit, the first setting operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the outer layer side of the first yarn supply package by the suction and holding unit, and moving the suction and holding unit by the moving unit so that the yarn end on the outer layer side of the first yarn supply package is set in the connection unit, the second setting operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the inner layer side of the second yarn supply package by the suction and holding unit, and moving the suction and holding unit by the moving unit so that the yarn end on the inner layer side of the second yarn supply package is set to the connection unit, 3. The yarn splicing device according to claim 2, wherein the connecting operation when the yarn is unwound from the outer layer side of the second yarn supplying package is an operation of connecting a yarn end on the outer layer side of the first yarn supplying package to a yarn end on an inner layer side of the second yarn supplying package.

4. a yarn supply stand including a first mounting portion to which a first yarn supply package is mounted, a second mounting portion to which a second yarn supply package is mounted, and a locking portion to which the yarn is locked; a yarn splicing device for connecting a yarn end of the first yarn supplying package attached to the first attachment portion and a yarn end of the second yarn supplying package attached to the second attachment portion and locking the connected yarn to the locking portion, The locking portion is at least one first retaining portion for retaining a yarn drawn from the first yarn supply package; at least one second retaining portion for retaining the yarn drawn from the second yarn supply package; The yarn splicing processing device includes: a suction holding unit that holds the yarn by sucking the yarn; A moving unit that moves the suction and hold unit; a connection portion that connects a yarn end of the first yarn supply package and a yarn end of the second yarn supply package; a control unit that controls the connection unit, the suction and hold unit, and the movement unit, The control unit is a first set operation in which the suction holding unit holds the yarn end of the first yarn supply package, and the moving unit moves the suction holding unit so that the yarn end of the first yarn supply package is set in the connection unit; a second set operation in which the suction holding unit holds the yarn end of the second yarn supply package, and the moving unit moves the suction holding unit so that the yarn end of the second yarn supply package is set in the connection unit; a connecting operation of connecting a yarn end of the first yarn supply package and a yarn end of the second yarn supply package by the connecting portion after the first set operation and the second set operation; and controlling the suction and holding unit, the moving unit, and the connecting unit so as to perform a yarn joining process including a first yarn threading operation, before the first set operation, in which the suction and holding unit holds a yarn end of the first yarn supply package, and the moving unit moves the suction and holding unit so that the yarn of the first yarn supply package is locked to the first locking unit; a second yarn threading operation in which, before the second set operation, the suction and holding unit holds the yarn end of the second yarn supply package, and the moving unit moves the suction and holding unit so that the yarn of the second yarn supply package is locked to the second locking unit; The suction and holding unit and the moving unit are controlled to perform a threading process including at least one of the operations The yarn supplying device, wherein the yarn splicing device is movable relative to the yarn supplying stand.

5. the first engaging portion is disposed closer to the first mounting portion than a center between the first mounting portion and the second mounting portion, The yarn feeding device according to claim 4 , wherein the second locking portion is disposed closer to the second mounting portion than a center between the first mounting portion and the second mounting portion.

6. The first fastening portion includes a first inner layer side fastening portion and a first outer layer side fastening portion, The second fastening portion includes a second inner layer side fastening portion and a second outer layer side fastening portion, the first yarn threading operation when a yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding a yarn end on an inner layer side of the first yarn supply package by the suction and holding unit, and moving the suction and holding unit so that the yarn of the first yarn supply package is locked by the first inner layer side locking unit by the moving unit, the second yarn threading operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding the outer layer side yarn end of the second yarn supply package by the suction and holding unit, and moving the suction and holding unit so that the yarn of the second yarn supply package is locked by the second outer layer side locking unit by the moving unit, the first setting operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding the yarn end on the inner layer side of the first yarn supply package by the suction and holding unit, and moving the suction and holding unit by the moving unit so that the yarn end on the inner layer side of the first yarn supply package is set in the connection unit, the second setting operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding the yarn end on the outer layer side of the second yarn supply package by the suction and holding unit, and moving the suction and holding unit by the moving unit so that the yarn end on the outer layer side of the second yarn supply package is set in the connection unit, the connecting operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of connecting a yarn end on an inner layer side of the first yarn supply package to a yarn end on an outer layer side of the second yarn supply package, the first yarn threading operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the outer layer side yarn end of the first yarn supply package by the suction and holding unit, and moving the suction and holding unit so that the yarn of the first yarn supply package is locked by the first outer layer side locking unit by the moving unit, the second yarn threading operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the inner layer side of the second yarn supply package by the suction and holding unit, and moving the suction and holding unit so that the yarn of the second yarn supply package is locked by the second inner layer side locking unit by the moving unit, the first setting operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the outer layer side of the first yarn supply package by the suction and holding unit, and moving the suction and holding unit by the moving unit so that the yarn end on the outer layer side of the first yarn supply package is set in the connection unit, the second setting operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the inner layer side of the second yarn supply package by the suction and holding unit, and moving the suction and holding unit by the moving unit so that the yarn end on the inner layer side of the second yarn supply package is set to the connection unit, 6. The yarn feeding device according to claim 4, wherein the connecting operation when the yarn is unwound from the outer layer side of the second yarn feeding package is an operation of connecting a yarn end on the outer layer side of the first yarn feeding package to a yarn end on an inner layer side of the second yarn feeding package.

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