JP2016199381A - Thread piecing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To piece various kinds of thread by one thread piecing device.SOLUTION: A thread piecing device 33 comprises a flow passage member 70 having air flow passages 70a, 70b. The flow passage member 70 is attachable to and detachable from either of a first nozzle unit 71 and a second nozzle unit 72. The first nozzle unit 71 is a structure having unraveling pipes 47, 47 unraveling a thread end with an air flow, and a first twisting member 46 joining thread ends unraveled by the unraveling pipes 47, 47 together, assembled in one body, and the second nozzle unit 72 is a structure having a strike untwisting member 85 untwisting thread ends by a strike of a striking member 90 in addition to an air flow, and a second untwisting member 84 joining the thread ends untwisted by the strike untwisting member 85 together, assembled in one body.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a yarn joining device that joins yarn ends after untwisting the yarn ends using the force of air.

  2. Description of the Related Art Conventionally, yarn joining devices that perform untwisting of yarn ends and joining of yarn ends by an air flow are known. Patent document 1 discloses this kind of yarn splicing device. The yarn splicing device of Patent Document 1 includes an untwisting nozzle pipe (first untwisting member) that untwists the yarn end using only the force of air. The untwisting nozzle pipe is attached to a block separate from the yarn splicing device main body (flow path member) so that the block can be attached to and detached from the block of the yarn splicing device main body. With this configuration, the untwisting nozzle pipe is attached in advance to a block separate from the yarn splicing device main body, and the number of such blocks corresponding to each condition of the yarn type is prepared and then spliced together. A block suitable for the power yarn can be attached and fixed to the main body of the yarn splicing device.

Japanese Utility Model Publication No. 61-177871

  In the splicing device of Patent Document 1 described above, for a spun yarn (for example, cotton yarn) obtained by twisting short fibers, the yarn end is suitably untwisted by selecting an untwisting nozzle pipe having an appropriate configuration. It is thought that they can be joined together. On the other hand, no matter what kind of untwisting nozzle pipe is used in the yarn splicing device of Patent Document 1, for hemp yarn formed by wet spinning or twin yarn obtained by twisting two yarns It was difficult to untwist the yarn end due to the influence of glue, glue and the like, and the influence of the twist direction of the two yarns constituting the double yarn. Accordingly, there has been a demand for a structure of a yarn joining device that can suitably untwist and join the yarn ends for more various types of yarns.

  The present invention has been made in view of the above circumstances, and an object thereof is to enable various types of yarn splicing with a single yarn splicing device.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  According to a first aspect of the present invention, a yarn joining device having the following configuration is provided. That is, the yarn splicing device includes a flow path member having an air flow path. Both the first nozzle unit and the second nozzle unit can be attached to and detached from the flow path member. The first nozzle unit is a structure in which a first untwisting member and a first twisting member are integrally assembled. The first untwisting member untwists the yarn end by an air flow. The first twisting member joins yarn ends untwisted by the first untwisting member. The second nozzle unit is a structure in which a second untwisting member and a second twisting member are integrally assembled. The second untwisting member untwists the yarn end by striking the striking body in addition to the air flow. The second twisting member joins yarn ends untwisted by the second untwisting member.

  That is, conventionally, when the yarn end is untwisted by a different untwisting mechanism in accordance with the change of the yarn type, it has been necessary to replace the yarn splicing device with a different specification. In this respect, according to the above-described configuration, the nozzle unit can be easily replaced, so that replacement to a different untwisting mechanism can be performed in a short time. Thereby, a wide variety of yarns can be suitably untwisted and joined by one yarn splicing device.

  In the yarn splicing device, it is preferable that the impacting body is in contact with the yarn end while being vibrated by an air flow and vibrates the yarn end.

  Thereby, since both the 1st untwisting member and the 2nd untwisting member operate | move by the force of air, it becomes easy to make the mechanism by the side of a flow path member common.

  According to the 2nd viewpoint of this invention, the textile machine of the following structures is provided. That is, the textile machine includes a plurality of winder units including the yarn splicing device and a machine base control unit. The machine base control unit controls the plurality of winder units. The said machine base control part changes at least any one of the time and time which make air flow according to the nozzle unit attached to the said flow-path member.

  Thereby, since the flow state of air can be changed all at once according to the kind of nozzle unit, the untwisting according to the thread type is realizable.

  According to the 3rd viewpoint of this invention, the textile machine of the following structures is provided. That is, the textile machine includes a plurality of winder units including the yarn splicing device, and a unit controller provided in each of the winder units. The unit control unit changes at least one of a time and a time when the air flows according to a nozzle unit attached to the flow path member.

  Thereby, since the air flow state can be individually changed according to the type of the nozzle unit, untwisting suitable for the yarn type can be realized.

The side view which shows the whole structure of a winder unit provided with the yarn splicing device which concerns on one form of embodiment of this invention. The block diagram which shows the air supply path | route of a yarn splicing system. The perspective view which shows the state which attached the 1st nozzle unit to the flow-path member of the yarn splicing device. The disassembled perspective view of a 1st nozzle unit. The typical side surface sectional view showing the state where the upper yarn and the lower yarn were guided to the yarn splicing device when the yarn was divided. FIG. 6 is a schematic side cross-sectional view illustrating a state in which an upper thread and a lower thread are brought together by the yarn gathering lever from the state shown in FIG. 5. FIG. 7 is a schematic side cross-sectional view of a yarn splicing device showing a state in which an upper yarn and a lower yarn are cut from the state shown in FIG. FIG. 8 is a schematic side cross-sectional view of the yarn splicing device showing a state in which the yarn end is pulled out from the untwisting pipe by the yarn shifting lever from the state of FIG. 7 and the yarn end is twisted by the first twisting member. The perspective view which shows the state which attached the 2nd nozzle unit to the flow-path member. The exploded perspective view of the 2nd nozzle unit. The typical plane sectional view showing signs that the yarn end is untwisted by the batting untwisting member.

  Next, an embodiment in which the present invention is applied to an automatic winder will be described with reference to the drawings. FIG. 1 is a side view showing an overall configuration of a winder unit 10 including a yarn splicing device 33 according to an embodiment of the present invention.

  The automatic winder (textile machine) includes a plurality of winder units 10 arranged side by side, and an unillustrated machine base control unit for controlling each winder unit 10. Below, the structure of each winder unit 10 is demonstrated easily.

  Each winder unit 10 is configured to unwind the yarn 21 from the yarn supplying bobbin 20 and wind it around the winding bobbin 22. A state in which the yarn 21 is wound around the winding bobbin 22 is referred to as a package 23. In the following description, “upstream side” and “downstream side” refer to the upstream side and the downstream side in the traveling direction of the yarn 21.

  As shown in FIG. 1, the winder unit 10 mainly includes a main body frame 24, a yarn supplying unit 25, and a winding unit 26.

  The main body frame 24 is disposed on the side of the winder unit 10. Most of the configuration of the winder unit 10 is supported directly or indirectly by the main body frame 24. Further, on the front side of the main body frame 24, an operation unit 27 including buttons that can be operated by an operator is provided.

  The yarn supplying section 25 is configured to be able to hold the yarn supplying bobbin 20 for supplying the yarn 21 in a substantially upright state.

  The winding unit 26 includes a cradle 28 and a winding drum 29.

  The cradle 28 rotatably supports the take-up bobbin 22. The cradle 28 is configured such that the peripheral surface of the supported winding bobbin 22 can be brought into contact with the outer peripheral surface of the winding drum 29. The take-up drum 29 is disposed to face the take-up bobbin 22 and is configured to be driven to rotate by a motor (not shown). A reciprocating spiral traverse groove (not shown) is formed on the outer peripheral surface of the winding drum 29 in order to traverse the yarn 21 wound around the winding bobbin 22.

  The take-up drum 29 is driven to rotate while the outer peripheral surface of the take-up bobbin 22 is in contact with the take-up bobbin 22. Thereby, the yarn 21 unwound from the yarn supplying bobbin 20 can be wound around the winding bobbin 22 while traversing the traverse groove. The configuration for traversing the yarn 21 is not limited to the winding drum 29 described above, and may be, for example, an arm-type traverse device that guides the yarn 21 by a traverse guide that is reciprocally driven with a predetermined traverse width. good.

  Each winder unit 10 includes a unit controller 30. The unit control unit 30 is configured as a computer including hardware such as a CPU, ROM, and RAM. Software such as a control program is stored in the ROM or the like. The unit control unit 30 can control each configuration of the winder unit 10 by the cooperation of the hardware and software.

  The winder unit 10 includes, in order from the upstream side, the unwinding assisting device 31, the tension applying device 32, the yarn joining device 33, and the yarn monitoring device in the traveling path between the yarn supplying unit 25 and the winding unit 26. 34 is arranged.

  The unwinding assisting device 31 includes a regulating member 35 that comes into contact with a portion (balloon) swelled outward by the yarn 21 unwound from the yarn supplying bobbin 20 being swung by centrifugal force. By restricting the yarn 21 from being excessively swung by bringing the regulating member 35 into contact with the balloon, the yarn 21 from the yarn feeding bobbin 20 is unwound by keeping the balloon at a certain size. Can be done.

  The tension applying device 32 applies tension to the traveling yarn 21. As the tension applying device 32 of the present embodiment, a gate type device is used in which movable comb teeth are arranged with respect to fixed comb teeth. The tension applying device 32 applies an appropriate tension to the yarn 21 by allowing the yarn 21 to pass while bending between the interdigitated comb teeth. The tension applying device 32 may be other than the gate type, and for example, a disk type may be employed.

  The yarn monitoring device 34 is configured to monitor the quality of the traveling yarn 21 and detect yarn defects (locations where the yarn 21 is abnormal) included in the yarn 21. In the vicinity of the yarn monitoring device 34, a cutter (not shown) for cutting the yarn 21 immediately when the yarn monitoring device 34 detects a yarn defect is provided.

  Next, the yarn joining device 33 and the yarn joining system 95 including the yarn joining device 33 will be described. When the yarn 21 between the yarn supplying bobbin 20 and the take-up bobbin 22 is divided for some reason, the yarn joining system 95 and the yarn bobbin 20 side (lower yarn) and the take-up bobbin It is configured to join (yarn splicing) to the 22 side thread (upper thread).

  As shown in FIG. 1, the yarn joining system 95 includes a yarn joining device 33, an upper yarn suction pipe 44, and a lower yarn suction pipe 45 in addition to the unit control unit 30 described above.

  The yarn joining device 33 is configured as a splicer device that generates a swirling air flow by injecting compressed air and twists the yarn ends together (twisting) with the swirling air flow. As described above, the yarn splicing device 33 basically twists the yarn ends using the force of air, but is configured to perform yarn splicing by adding an appropriate liquid (for example, water). May be. Alternatively, a heater may be attached to heat the air, and the yarn ends may be twisted together using the force of the heated air.

  The upper thread suction pipe 44 is disposed on the downstream side of the yarn joining device 33. The upper thread suction pipe 44 is configured to be turnable in the vertical direction, and a suction flow can be generated at the tip thereof. With this configuration, the upper thread suction pipe 44 can be captured and guided to the yarn joining device 33 by sucking the yarn end on the winding bobbin 22 side.

  The lower thread suction pipe 45 is disposed on the upstream side of the yarn joining device 33. The upper thread suction pipe 44 is configured to be turnable in the vertical direction, and a suction flow can be generated at the tip thereof. With this configuration, the lower yarn suction pipe 45 can capture and guide the yarn end on the yarn feeding bobbin 20 side to the yarn joining device 33 by sucking the yarn end.

  Next, the yarn joining device 33 will be described in detail with reference to FIGS. 2 and 3. FIG. 2 is a block diagram showing an air supply path and the like of the yarn joining system 95. FIG. 3 is a perspective view showing a state in which the first nozzle unit 71 is attached to the flow path member 70 of the yarn joining device 33. FIG. 4 is an exploded perspective view of the first nozzle unit 71.

  As shown in FIGS. 2 and 3, the yarn joining device 33 includes a housing 65, a flow path member 70, and a first nozzle unit 71 attached to the flow path member 70.

  The flow path member 70 is configured to accommodate an untwisting pipe 47 and the like described later.

  The flow path member 70 is disposed inside the housing 65. Two air flow paths 70 a and 70 b that are independent of each other are formed inside the flow path member 70. Air is supplied to the air flow paths 70a and 70b from a compressed air supply source 51 shown in FIG.

  As shown in FIG. 3, a pair of guide plates 66 are arranged above and below the flow path member 70, and these guide plates 66 are all fixed to the housing 65. As shown in FIG. 3, each guide plate 66 is formed with two guide grooves into which the thread 21 can be inserted. Each guide plate 66 is attached with a clamp 75 capable of holding the yarn 21 and a cutter 76 capable of cutting the yarn 21.

  On the front side of the flow path member 70, a pair of upper and lower yarn shifting levers 77 and a pair of upper and lower yarn holding levers 78 are supported rotatably. The yarn gathering lever 77 can be bent in contact with the yarn 21 by rotating. Further, the thread presser lever 78 can press and fix the thread 21 by rotating.

  The yarn shifting lever 77 and the yarn holding lever 78 are driven by a cam mechanism (not shown) attached to the housing 65. An electric motor (not shown) for driving the cam mechanism is fixed to the flow path member 70. The electric motor is electrically connected to the unit control unit 30, and driving / stopping of the electric motor is controlled by the unit control unit 30.

  3 and 4, the first nozzle unit 71 includes a base block 73, a stay 74, a first twisting member 46, and a pair of untwisting pipes 47, 47 (first untwisting member). And. The first nozzle unit 71 is assembled to the flow path member 70 by an appropriate fixing member (in the present embodiment, the bolts 68 and 69 are not limited thereto). That is, the first nozzle unit 71 can be attached to and detached from the flow path member 70 for each unit (in other words, in a state of an integrally assembled structure).

  Hereinafter, a detailed configuration of the first nozzle unit 71 will be described.

  The base block 73 is attached to the front surface of the flow path member 70. A stay 74 formed by bending a metal plate is disposed on the opposite side of the flow path member 70 with the base block 73 interposed therebetween. A first twisting member 46 is disposed on the opposite side of the base block 73 across the stay 74. The pair of untwisted pipes 47, 47 are inserted into through-holes 73 a, 73 a formed in the base block 73 at the front side end portions, and the back side is accommodated in the flow path member 70. . An end portion of the untwisting pipe 47 is opened to the front side through penetrating holes 74 a and 74 a formed in the stay 74. The stay 74 is not limited to one manufactured by bending a metal plate, and a molded product molded in a desired shape from the beginning may be used.

  As shown in FIG. 2, two air flow paths 71a and 71b are formed inside the first nozzle unit 71 (specifically, the base block 73 and the like). When the first nozzle unit 71 is attached to the flow path member 70, one of the two air flow paths 71a is connected to the air flow path 70a of the flow path member 70, and the other air flow path 71b is connected to the flow path member 70. It is connected to the air flow path 70b.

  As shown in FIG. 3, in a state where the first nozzle unit 71 is assembled to the flow path member 70, the first twisting member 46 is the front side of the yarn joining device 33 (that is, the side close to the traveling path of the yarn 21). Is arranged. The first twisting member 46 is formed with a yarn splicing hole 48 into which a yarn end can be put. Further, as shown in FIG. 2, a twisting nozzle 49 that ejects compressed air toward the inside of the yarn joining hole 48 is formed on the inner wall of the yarn joining hole 48. An air flow path 71 b formed in the first nozzle unit 71 is connected to the twist nozzle 49. By ejecting compressed air from the twisting nozzle 49, a swirling air flow can be generated inside the yarn splicing hole 48.

  Similarly, as shown in FIG. 3, in the state where the first nozzle unit 71 is assembled to the flow path member 70, the two untwisting pipes 47, 47 are arranged one above the other, and each has one end connected to the yarn joining device. Opened to the front side of 33 (that is, the side close to the travel path of the yarn 21). On the inner walls of the untwisting pipes 47, 47, untwisting nozzles 50 for ejecting compressed air obliquely backward are formed. An air channel 71 a formed in the first nozzle unit 71 is connected to the untwisting nozzles 50, 50. By ejecting compressed air from each untwisting nozzle 50, a swirling air flow can be generated inside the untwisting pipe 47.

  Next, a configuration for supplying compressed air to the first nozzle unit 71 will be described with reference to FIG.

  The automatic winder of this embodiment includes a compressed air supply source (compressor or the like) 51. The compressed air supplied from the compressed air supply source 51 is branched and sent to two common air pipes 59 that are commonly used by the plurality of winder units 10. An untwisted air supply path 52 provided in each winder unit 10 is connected to one common air pipe 59, and a twisted air supply path 54 provided in each winder unit 10 is connected to the other common air pipe 59. .

  The untwisting air supply path 52 is formed by the untwisting pipe 47 through the air passage 70 a formed in the passage member 70 and the air passage 71 a formed in the first nozzle unit 71. It is connected to the nozzles 50, 50. Further, an untwisting valve 53 provided for each winder unit 10 is arranged in the middle of the untwisting air supply path 52. The untwisting valve 53 is configured as an electromagnetic valve, and the opening / closing thereof can be controlled by the unit controller 30 of each winder unit 10. The unit control unit 30 opens the untwisting valve 53 to inject compressed air from the compressed air supply source 51 from the untwisting nozzles 50 and 50, thereby generating a swirling air flow in the untwisting pipes 47 and 47. Can be made.

  The twisting air supply path 54 is formed in the first twisting member 46 through the air flow path 70 b formed in the flow path member 70 and the air flow path 71 b formed in the first nozzle unit 71. The twist nozzle 49 is connected. In addition, a twisting valve 55 provided for each winder unit 10 is disposed in the middle of the twisting air supply path 54. The twisting valve 55 is configured as an electromagnetic valve, and the opening / closing thereof can be controlled by the unit controller 30 of each winder unit 10. The unit controller 30 opens the twisting valve 55 so that the compressed air from the compressed air supply source 51 is jetted from the twisting nozzle 49, and the swirling air enters the yarn joining hole 48 of the first twisting member 46. A flow can be generated.

  When the yarn ends are joined together using the first nozzle unit 71, the unit control unit 30 controls the yarn joining device 33 in a predetermined mode (in the following description, it may be referred to as a first yarn joining mode). . Hereinafter, the control in the first yarn joining mode will be briefly described. FIGS. 5 to 8 sequentially show how the upper yarn and the lower yarn are guided to the yarn joining device 33 and the yarn ends are joined after being untwisted.

  The unit controller 30 keeps both the untwisting valve 53 and the twisting valve 55 closed during normal winding of the yarn 21. When the yarn 21 between the yarn supplying unit 25 and the winding unit 26 is in a divided state for some reason, the unit control unit 30 executes the yarn joining in the first yarn joining mode.

  First, as shown in FIG. 5, the unit controller 30 sucks and captures the yarn end on the winding bobbin 22 side by the upper yarn suction pipe 44 and guides it to the yarn joining device 33. Before and after this, the unit controller 30 sucks and captures the yarn end on the yarn feeding bobbin 20 side by the lower yarn suction pipe 45 and guides it to the yarn joining device 33. As a result, the upper thread and the lower thread are in the above-described guide grooves formed on the upper and lower guide plates 66.

  Next, the unit controller 30 rotates the yarn shifting lever 77 from the state of FIG. 5 to move the upper yarn and the lower yarn to the back side of the yarn joining device 33. As a result, the upper thread and the lower thread are pushed into the yarn joining holes 48 of the first twisting member 46, as shown in FIG. In this state, the unit controller 30 cuts the upper thread with the upper cutter 75 while cutting it with the lower cutter 76, and holds the lower thread with the lower clamp 75 while holding it with the upper cutter 76. Cut to a length suitable for splicing.

  Almost simultaneously with the cutting of the upper thread and the lower thread, the unit controller 30 opens the untwisting valve 53 for a predetermined time. Accordingly, the compressed air is jetted into the untwisting pipe 47 from the untwisting nozzle 50 toward the rear of the apparatus. As a result, as shown in FIG. 7, the upper yarn and the lower yarn are respectively sucked into the untwisting pipes 47 and 47 and untwisted by the action of the compressed air. That is, in this untwisting mechanism, the yarn end is untwisted only by the force of air.

  Next, as shown in FIG. 8, the unit controller 30 further rotates the yarn shifting lever 77 to pull out the untwisted yarn end from the untwist pipe 47 and to remove the upper yarn and the lower yarn. The end is set in the yarn joining hole 48 so as to overlap with a predetermined length. Further, the unit control unit 30 rotates the yarn holding lever 78 to fix the upper yarn and the lower yarn in a state where the yarn end is set in the yarn joining hole 48.

  In this state, the unit controller 30 opens the twisting valve 55 for a predetermined time. As a result, compressed air is supplied to the twisting air supply passage 54, and the compressed air is ejected from the twisting nozzle 49.

  The compressed air ejected from the twisting nozzle 49 generates a swirling air flow in the yarn joining hole 48 of the first twisting member 46 as shown in FIG. 8, and the upper yarn set in the yarn joining hole 48. And twist the end of the lower thread. In this way, the first twisting member 46 joins the yarns untwisted by the untwisting pipes 47, 47. Thereby, since the upper thread and the lower thread are joined (yarn spliced), the thread 21 can be made continuous between the yarn supplying bobbin 20 and the take-up bobbin 22. Thereafter, the yarn shifting lever 77 and the yarn holding lever 78 are rotated in a direction to release the contact with the yarn 21, and the piecing is completed.

  In the first nozzle unit 71 configured as described above, the yarn end of the spun yarn obtained by twisting the short fibers can be suitably untwisted by the untwisting pipe 47. However, for hemp yarn and the like formed by wet spinning, the fibers may adhere to each other with glue, glue or the like. Further, in the case of double yarn, the twist directions of the two yarns constituting the double yarn may be different. For this reason, it is difficult to untwist the yarn ends of these yarns with the untwisting pipe 47 that untwists only with the force of air. Therefore, in the yarn splicing device 33 of the present embodiment, the yarn end is untwisted by a different untwisting mechanism by attaching the second nozzle unit 72 shown in FIG. You can also do it.

  Hereinafter, a detailed configuration of the second nozzle unit 72 will be described. FIG. 9 is a perspective view showing a state in which the second nozzle unit 72 is attached to the flow path member 70. FIG. 10 is an exploded perspective view of the second nozzle unit 72.

  The second nozzle unit 72 is an air blast type nozzle unit. As shown in FIGS. 9 and 10, the base block 82, the stay 83, the second twisting member 84, and a pair of striking and untwisting members. (Second untwisting members) 85 and 85.

  The base block 82 is attached to the front surface of the flow path member 70. On the side opposite to the flow path member 70 across the base block 82, a stay 83 manufactured by bending a metal plate and a pair of striking and untwisting members 85 and 85 are disposed. The hitting and untwisting members 85 and 85 are arranged vertically with the stay 83 interposed therebetween. A second twisting member 84 is disposed on the opposite side of the base block 82 across the stay 83. Further, the stay 83 is not limited to one manufactured by bending a metal plate, and a molded product molded in a desired shape from the beginning may be used.

  As shown in FIG. 10, the second nozzle unit 72 is assembled to the flow path member 70 by bolts 68 and 69. That is, the second nozzle unit 72 can be attached to and detached from the flow path member 70 for each unit (in other words, in a state of an integrally assembled structure).

  As shown in FIG. 9, in a state where the second nozzle unit 72 is assembled to the flow path member 70, the second twisting member 84 is the front side of the yarn joining device 33 (that is, the side close to the traveling path of the yarn 21). Is arranged. Similar to the first twisting member 46, the second twisting member 84 is formed with a yarn joining hole 86 in which the yarn end can be set. However, the shape and size of the yarn joining hole 86 formed in the second twisting member 84 are different from the yarn joining hole 48 of the first twisting member 46 described above. That is, the shape and size of the yarn joining hole 86 of the second twisting member 84 are appropriately designed so that yarn ends that cannot be joined by the first twisting member 46 can be joined.

  As shown in FIG. 2, the second twisting member 84 has a pair of twisting nozzles 91 and 92. The two twisting nozzles 91 and 92 are both formed on the inner wall of the yarn joining hole 86, and one twisting nozzle 91 injects compressed air clockwise (counterclockwise) toward the inside of the yarn joining hole 86. The other twisting nozzle 92 is configured to inject compressed air counterclockwise (clockwise) in the direction opposite to the twisting nozzle 91 toward the inside of the yarn joining hole 86. As a result, a pair of swirling airflows in which the swirling direction is opposite in the yarn path direction can be generated inside the yarn joining hole 86.

  As shown in FIG. 9, in the state where the second nozzle unit 72 is assembled to the flow path member 70, the two striking and untwisting members 85, 85 are arranged vertically. Each striking untwisting member 85 is formed with an L-shaped untwisting groove 87 having an L shape in plan view, as shown in FIG.

  FIG. 11 is a schematic plan sectional view showing an untwisting groove 87 formed in the batting untwisting member 85. As shown in FIG. 11, the untwisting groove 87 has a shape in which a short straight first groove 87a and a long straight second groove 87b are vertically connected, and the end of the first groove 87a. Is open on the front side of the yarn joining device 33. An untwisting nozzle 89 that ejects compressed air is formed on the inner wall of the untwisting groove 87. The untwisting nozzle 89 is provided so as to inject compressed air along the longitudinal direction of the second groove 87b from the connecting portion of the first groove 87a and the second groove 87b.

  The hitting / untwisting member 85 is formed with a slit 88 connected to the second groove 87b. The hitting body 90 is attached to the slit 88 so as to be sandwiched. The striking body 90 of the present embodiment is formed long and thin with a member having moderate flexibility, and most of the striking body 90 is disposed inside the second groove 87b. The striking body 90 can vibrate inside the second groove 87b by the air flow injected from the untwisting nozzle 89, and can strike the yarn end in the second groove 87b.

  The slits 88 and 88 for attaching the impacting body 90 are provided in a pair so as to be symmetrical with respect to the second groove 87b, and any one of the slits 88 is provided depending on the twisting direction of the yarn 21. The impacting body 90 can be selected and attached.

  As shown in FIG. 2, two air flow paths 72a and 72b are formed inside the second nozzle unit 72 (specifically, the base block 82 and the like). When the second nozzle unit 72 is attached to the flow path member 70, one of the two air flow paths 72a is connected to the air flow path 70a of the flow path member 70, and the other air flow path 72b is connected to the flow path member 70. It is connected to the air flow path 70b.

  Of the two air flow paths 72a and 72b formed in the second nozzle unit 72, one air flow path 72a is connected to the untwisting nozzle 89 of the striking untwisting member 85, and the other air flow path 72b is the second air flow path 72b. The twisting nozzles 91 and 92 of the twisting member 84 are connected.

  Since the configuration for supplying compressed air to the second nozzle unit 72 is the same as the configuration for supplying compressed air to the first nozzle unit 71, the description thereof is omitted. As described above, both the case where the yarn joining is performed by the first nozzle unit 71 and the case where the yarn joining is performed by the second nozzle unit 72 are operated by the force of air, so the mechanism on the flow path member 70 side can be easily shared. can do.

  However, depending on whether the unit attached to the flow path member 70 is the first nozzle unit 71 or the second nozzle unit 72, the time and timing for supplying the compressed air to the respective nozzles are different. For this reason, in the winder unit 10 of the present embodiment, the operator operates the machine base control unit that controls the plurality of winder units 10 in an integrated manner, so that the air of each winder unit 10 depends on the attached nozzle unit. The flow time and timing (specifically, the opening / closing timing of the untwisting valve 53 and the twisting air supply passage 54) can be set all at once. In this embodiment, the operator can change the settings all at once by operating the machine base control unit. However, the unit control can be performed by the operator operating the operation unit 27 provided in each winder unit 10. The unit 30 may be instructed so that the time and timing for flowing the air of the winder unit 10 can be set.

  When the yarn ends are joined together using the second nozzle unit 72, the unit controller 30 is a predetermined mode different from the first yarn joining mode (in the following description, it may be referred to as a second yarn joining mode). Is used to control the yarn joining device 33. Hereinafter, the control in the second yarn joining mode will be described.

  When the yarn 21 between the yarn supplying unit 25 and the winding unit 26 is in a divided state for some reason, the unit control unit 30 executes the yarn joining in the second yarn joining mode.

  First, the unit controller 30 controls the upper thread suction pipe 44, the lower thread suction pipe 45, and the yarn shifting lever 77 in the same manner as in the first thread joining mode. As a result, the yarn end on the winding bobbin 22 side is sucked and captured by the upper yarn suction pipe 44 and guided to the yarn joining device 33. Further, the yarn end on the yarn feeding bobbin 20 side is sucked and captured by the lower yarn suction pipe 45 and guided to the yarn joining device 33. In this state, the yarn shifting lever 77 rotates, and the upper yarn and the lower yarn are set in the yarn joining hole 86 of the second twisting member 84 and set at the position of the untwisting nozzle 89 in the first groove 87a. In this state, the unit controller 30 holds the yarn with the clamp 75 provided in the yarn joining device 33, and cuts the yarn with the cutter 76 so as to have a length suitable for the yarn joining.

  Subsequently, the unit controller 30 opens the untwisting valve 53 for a predetermined time. Thereby, compressed air is ejected from the untwisting nozzle 89 into the second groove 87b. As a result, the upper yarn and the lower yarn are sucked into the second grooves 87b and 87b of the batting and untwisting members 85 and 85, respectively. With this configuration, the upper yarn and the lower yarn sucked into the batting and untwisting members 85 and 85 are untwisted by the action of compressed air and the yarn end is also vibrated by the striking body 90. To do. As described above, the batting and untwisting member 85 untwists the yarn end by using both the force of air and the force applied from the batting body 90 (hitting).

  Next, the yarn shifting lever 77 rotates. As a result, the untwisted yarn ends are pulled out from the second groove 87b and the second groove 87b, and are set in the yarn joining hole 86 so that the yarn ends of the upper yarn and the lower yarn overlap each other with a predetermined length. . In this state, the thread presser lever 78 rotates to fix the upper thread and the lower thread.

  Subsequently, the unit controller 30 opens the twisting valve 55 for a predetermined time. As a result, compressed air is supplied to the twisting air supply passage 54, and thereby the compressed air is ejected from the twisting nozzles 91 and 92 provided in the yarn joining hole 86 of the second twisting member 84. As a result, a pair of swirling airflows that are opposite to each other are generated inside the yarn joining hole 86 as described above, so that the yarn ends of the upper yarn and the lower yarn are entangled and twisted. Thereby, since the upper thread and the lower thread are joined (yarn spliced), the thread 21 can be made continuous between the yarn supplying bobbin 20 and the take-up bobbin 22.

  As described above, in the yarn splicing device 33 of the present embodiment, since both the first nozzle unit 71 and the second nozzle unit 72 can be attached to and detached from the flow path member 70, the nozzles are selected according to the yarn type. Units can be used appropriately. That is, conventionally, when it is desired to untwist the yarn end with a different untwisting mechanism, the yarn joining device must be replaced with a yarn joining device in which a different untwisting mechanism is assembled. In this regard, the yarn joining device 33 of the present embodiment can cope with various yarn types by simply replacing the nozzle unit that is a part of the front side of the yarn joining device 33. Therefore, it is not necessary to replace the housing 65, the flow path member 70, the yarn shifting lever 77, the yarn presser lever 78, the electric motor, the cam mechanism, and the like, so that convenience can be improved while suppressing an increase in cost.

  As described above, the yarn splicing device 33 of the present embodiment includes the flow path member 70 having an air flow path. Both the first nozzle unit 71 and the second nozzle unit 72 can be attached to and detached from the flow path member 70. The first nozzle unit 71 is a structure in which the untwisting pipes 47 and 47 and the first twisting member 46 are integrally assembled. The untwisting pipes 47 and 47 untwist the yarn ends by an air flow. The first twisting member 46 joins the yarn ends untwisted by the untwisting pipes 47, 47. The second nozzle unit 72 is a structure in which the striking and untwisting members 85 and 85 and the second twisting member 84 are integrally assembled. The batting and untwisting members 85 and 85 untwist the yarn end by striking the batting body 90 in addition to the air flow. The second twisting member 84 joins the yarn ends untwisted by the impact untwisting members 85, 85.

  Thus, conventionally, in order to untwist the yarn end with a different untwisting mechanism, it has been necessary to replace the yarn splicing device 33 with one having a different specification. The nozzle unit (the first nozzle unit 71 or the second nozzle) By changing only the unit 72), the yarn ends can be untwisted by different untwisting mechanisms. As a result, the single yarn splicing device 33 can cope with various yarn types.

  Further, in the yarn splicing device 33 of the present embodiment, the impacting body 90 is vibrated by the flow of air, contacts the yarn end, and vibrates the yarn end to promote untwisting.

  Thereby, since the untwisting pipes 47 and 47 and the striking untwisting members 85 and 85 are operated by the force of air, the driving force supply mechanism on the flow path member 70 side can be made common.

  The automatic winder according to the present embodiment includes a plurality of winder units 10 including a yarn joining device 33 and a machine base control unit. The machine base control unit controls a plurality of winder units 10. Then, the machine base control unit determines at least one of the time and the time for the air to flow according to the type of the nozzle unit (the first nozzle unit 71 or the second nozzle unit 72) attached to the flow path member 70. change.

  Thereby, according to the kind (the 1st nozzle unit 71 or the 2nd nozzle unit 72) of a nozzle unit, the flow state of air can be changed all at once, and the untwisting suitable for a yarn kind is realizable.

  However, in the automatic winder described above, the unit control unit 30 provided in each winder unit 10 corresponds to the type of the nozzle unit (the first nozzle unit 71 or the second nozzle unit 72) attached to the flow path member 70. Thus, it may be configured to change at least one of the time and timing of flowing the air.

  In this case, depending on the type of the nozzle unit (the first nozzle unit 71 or the second nozzle unit 72), the air flow state can be individually changed to achieve untwisting that matches the yarn type.

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

  In the above embodiment, an example in which the yarn joining device according to the present invention is applied to an automatic winder has been described, but the present invention is not limited to this. That is, for example, the yarn splicing device according to the present invention can also be applied to other textile machines such as a spinning machine.

  In the above embodiment, the first twisting member 46 provided in the first nozzle unit 71 and the second twisting member 84 provided in the second nozzle unit 72 are configured differently. It is not a thing. That is, the first twisting member 46 and the second twisting member 84 may be changed to have the same configuration, and various combinations such as attaching the second twisting member 84 to the first nozzle unit 71. It is also possible to use.

30 Unit control unit (control unit)
33 Yarn splicing device 46 First twisting member 47 Untwisting pipe (first untwisting member)
70 Channel member 70a, 70b Air channel 71 1st nozzle unit 72 2nd nozzle unit 84 2nd twisting member 85 Impact untwisting member (2nd untwisting member)
90 striking body

Claims (4)

In a yarn splicing device comprising a flow path member having an air flow path,
Both the first nozzle unit and the second nozzle unit can be attached to and detached from the flow path member.
The first nozzle unit includes:
A first untwisting member for untwisting the yarn end by an air flow;
A first twisting member for joining yarn ends untwisted by the first untwisting member;
Is an integrally assembled structure,
The second nozzle unit is
A second untwisting member for untwisting the yarn end by striking the striking body in addition to the air flow;
A second twisting member that joins yarn ends untwisted by the second untwisting member;
Is a structure assembled integrally. The yarn splicing device according to claim 1,
The yarn splicing device, wherein the hitting body is in contact with the yarn end while being vibrated by an air flow and vibrates the yarn end. A plurality of winder units comprising the yarn splicing device according to claim 1 or 2,
A machine control unit for controlling the plurality of winder units;
A textile machine comprising:
The textile machine according to claim 1, wherein the machine control unit changes at least one of a time and a time during which air flows according to a nozzle unit attached to the flow path member. A plurality of winder units comprising the yarn splicing device according to claim 1 or 2,
A unit controller provided in each of the winder units;
A textile machine comprising:
The textile machine according to claim 1, wherein the unit control unit changes at least one of a time and a time during which the air flows according to a nozzle unit attached to the flow path member.

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