WO2016006240A1

WO2016006240A1 - Air spinning device and spinning machine

Info

Publication number: WO2016006240A1
Application number: PCT/JP2015/003442
Authority: WO
Inventors: 秀茂森
Original assignee: 村田機械株式会社
Priority date: 2014-07-10
Filing date: 2015-07-08
Publication date: 2016-01-14
Also published as: EP3168340B1; EP3168340A1; EP3168340A4; CN106661778A

Abstract

This air spinning device (9) is provided with a first block (60) and a second block (70). The first block (60) applies a swirling air current to a fibre bundle (8). The second block (70) is provided to the downstream side of the first block (60) in the fiber traveling direction, and guides the fibre bundle further towards the downstream side. The second block (70) is capable of performing: a first separation operation in which the second block (70) is linearly separated from the first block (60) along the fibre traveling direction; and a second separation operation which is performed after the first separation operation, and in which the orientation of the second block (70) is changed while the second block (70) is moved in a direction different to that in the first separation operation.

Description

Pneumatic spinning device and spinning machine

The present invention mainly relates to an air spinning device capable of separating the second block from the first block.

The pneumatic spinning device of Patent Document 1 includes a nozzle holder as a first block, a spindle member as a second block, and a cylinder. The nozzle holder and the spindle member are connected via a linear guide rod. By driving the cylinder, the spindle member slides along the guide rod. Thereby, the spindle member can be separated from the nozzle holder, and fibers clogged between the spindle member and the nozzle holder can be removed.

The pneumatic spinning device of Patent Document 2 includes a first block, a second block, and a cylinder. The first block generates a swirling air flow with respect to the fiber bundle sent from the draft device. The second block generates a swirling air flow in a direction different from that of the first block with respect to the fiber bundle sent from the first block. The 1st block and the 2nd block are attached so that rotation with the same rotation axis is possible. By operating the cylinder, the first block and the second block are rotated together so as to move away from the draft device. When the cylinder is operated more than a certain amount, only the first block hits the stopper, so that the second block rotates away from the first block. Thereby, the fibers clogged between the draft device and the first block and between the first block and the second block can be removed.

JP-A-8-218233 JP 2011-38210 A

In order to remove the fibers clogged between the first block and the second block, the first block and the second block can be separated so that the downstream side of the first block and the upstream side of the second block can be visually recognized. preferable. Since the air spinning device of Patent Document 1 is configured to slide the spindle member linearly and away from the nozzle holder, in order to make the downstream side of the first block and the upstream side of the second block visible, the slide It is necessary to increase the amount. However, when the slide amount is large, a space that takes this into consideration must be provided around the pneumatic spinning device.

In Patent Document 2, since the nozzle at the tip of the second block is a precision part, it is not preferable that the nozzle contacts the first block. Therefore, it is necessary to separate the second block from the first block at an angle close to a straight line (fiber traveling direction). In this case, it is necessary to dispose the rotation axis far (increase the length of the arm). However, when the arm becomes long, the size of the pneumatic spinning machine itself becomes large. Further, when the second block is separated at an angle close to a straight line, a space in consideration of the rotation of the second block must be provided around the pneumatic spinning device.

The main object of the present invention is to provide a compact configuration in an air spinning device capable of separating the second block from the first block.

Means and effects for solving the problems

According to the first aspect of the present invention, the pneumatic spinning device includes a first block and a second block. A travel path for guiding the fiber bundle is formed in the first block. The second block is disposed downstream of the first block in the fiber traveling direction, and guides the fiber bundle further downstream. The second block moves in a direction different from the first separation operation after the first separation operation and the first separation operation linearly separated from the first block along the fiber traveling direction, or changes its posture. The second separation operation can be performed.

This prevents the first block and the second block from contacting each other by performing the first separation operation, and allows the downstream side of the first block and the upstream side of the second block to move with a small amount of movement by performing the second separation operation. The second block can be positioned for visual recognition. Therefore, the space provided around the pneumatic spinning device can be reduced, and the size of the pneumatic spinning device itself can be suppressed.

In the pneumatic spinning device, the first block is movable. Thereby, the fiber clogged upstream in the fiber travel direction of the first block can be removed.

In the pneumatic spinning device, the first block moves in the same direction as the second block when at least the second block performs the first separation operation. Thereby, since the direction in which the first block and the second block are separated is the same, the power transmission mechanism can be simplified.

In the pneumatic spinning device, the second separation operation is an arc motion. Accordingly, the second block can be positioned so that the downstream side of the first block and the upstream side of the second block can be visually recognized with a smaller amount of movement.

The pneumatic spinning device includes a guide member and an insertion member. A guide groove including a linear first portion and a second portion along a direction different from the first portion is formed in the guide member. The insertion member is inserted into the guide groove and moves along with the second block along the guide groove. Thereby, it is possible to cause the second block to perform the first separation operation and the second separation operation with a simple configuration.

The pneumatic spinning device includes a drive unit that generates power for causing the second block to perform the first separation operation and the second separation operation. Thereby, a power transmission mechanism can be simplified.

In the pneumatic spinning device, the driving unit includes at least one of a cylinder, a ball screw, a motor, and a linear motor. Thereby, it is possible to cause the second block to perform the first separation operation and the second separation operation with a simple configuration.

The pneumatic spinning device includes a guide rail, a slide portion, and a seal member. The guide rail is provided along the arrangement direction of the first block and the second block. The slide part moves together with the second block along the guide rail by the power of the drive part. The seal member covers between the guide rail and the slide portion. Thereby, since adhesion of the fiber between a guide rail and a slide part can be prevented, the frequency of maintenance can be reduced.

In the pneumatic spinning device, at least the first block, the second block, the drive unit, the guide rail, and the slide unit are detachable integrally. Thereby, since a some member can be removed integrally, a maintainability can be improved.

In the pneumatic spinning device, the drive unit adjusts the position of the second block with respect to the first block in the fiber traveling direction. Thereby, the space | interval of a 1st block and a 2nd block can be varied according to the content of a maintenance, for example.

In the pneumatic spinning device, the driving unit is configured to be able to control the speed of movement of the second block relative to the first block. Thereby, for example, by reducing the speed of the second block before the first block contacts the second block, it is possible to suppress an impact when the first block contacts the second block.

In the pneumatic spinning device, the second separation operation is an operation in which the second block moves in a direction different from that of the first separation operation to change the posture of the second block. Accordingly, the second block can be positioned so that the downstream side of the first block and the upstream side of the second block can be visually recognized with a smaller amount of movement.

In the pneumatic spinning device, the first block includes a swirling air flow generation nozzle through which air to be injected passes to generate a swirling air flow in the spinning chamber. The second block includes a hollow guide shaft through which the fiber bundle twisted under the action of a swirling air flow passes in the spinning chamber. Thereby, in an air spinning device including the first block and the hollow guide shaft body, the hollow guide shaft body can be moved in a compact space.

In the pneumatic spinning device, the first block includes a first nozzle through which air to be injected passes to cause a swirling air flow in a first direction to act on the fiber bundle. The second block includes a second nozzle through which air to be injected passes in order to cause a swirling air flow in a second direction opposite to the first direction to act on the fiber bundle. Thereby, in the pneumatic spinning device in which two nozzles are arranged in series, the second block can be moved in a compact space.

According to a second aspect of the present invention, a spinning machine includes the pneumatic spinning device, a draft device, and a winding unit. The draft device drafts the fiber bundle spun by the pneumatic spinning device. The winding unit winds the yarn generated by the pneumatic spinning device into a package.

This makes it possible to reduce the space around the pneumatic spinning device, so that the spinning machine can be made compact.

In the spinning machine, the first block operates so as to be linearly separated from the draft device along the fiber traveling direction. Thereby, when the first block is separated from the draft device and then returned to the original position, it is possible to prevent the position where the fiber travels from being shifted.

The side view which shows the structure of a spinning unit provided with the pneumatic spinning apparatus which concerns on 1st Embodiment of this invention. 2A is a side view of the pneumatic spinning device, and FIG. 2B is a plan view of the pneumatic spinning device. Sectional drawing which shows the structure inside a pneumatic spinning apparatus. FIG. 4A, FIG. 4B, and FIG. 4C are diagrams showing how the first block and the second block move. 5A is a diagram schematically illustrating the configuration and operation of Conventional Example 1, and FIG. 5B is a diagram schematically illustrating the configuration and operation of Conventional Example 2. 6A and 6B are diagrams schematically showing the configuration and operation of a modified example. 7A and 7B are side views of the pneumatic spinning device of the second embodiment. The graph which shows the speed change when moving a 2nd block from a spinning position to a maintenance position. The graph which shows the speed change when moving a 2nd block from a maintenance position to a spinning position.

Next, a spinning machine (spinning machine) according to the first embodiment of the present invention will be described with reference to the drawings. In this specification, “upstream” and “downstream” mean upstream and downstream in the traveling direction of the fiber bundle and spun yarn during spinning.

The spinning machine includes a large number of spinning units 2 arranged side by side, an unillustrated machine base control device that centrally manages the spinning units, and at least one unillustrated union provided for the plurality of spinning units 2. And a recovery device. Each spinning unit 2 produces a spun yarn 10 by spinning the fiber bundle 8 sent from the draft device 7 by the air spinning device 9, and winds the spun yarn 10 by the take-up unit 26 to form a package 50. To do.

As shown in FIG. 1, each spinning unit 2 includes a draft device 7, an air spinning device 9, a yarn storage device 22, a yarn joining device 23, and a yarn monitoring device arranged in order from upstream to downstream. 25 and a winding unit 26. Each unit included in the spinning unit 2 is controlled by a unit controller 30 provided in the spinning unit 2. In FIG. 1, only a part of the control target of the unit controller 30 is given an arrow. Each unit included in the spinning unit 2 may be controlled by a machine control device.

The draft device 7 includes four draft rollers: a back roller 16, a third roller 17, a middle roller 19 on which a rubber apron belt 18 is mounted, and a front roller 20 in this order from the upstream side. Each draft roller is rotationally driven at a predetermined rotational speed. The draft device 7 has opposing rollers arranged to face each draft roller.

The draft device 7 sandwiches and conveys a sliver 15 supplied from a sliver case (not shown) via a sliver guide between a plurality of draft rollers and a plurality of opposed rollers, thereby a predetermined fiber amount (or thick fiber). The fiber bundle 8 is generated by drawing (drafting) until it becomes (S).

An air spinning device 9 is disposed immediately downstream of the front roller 20. The fiber bundle 8 drafted by the draft device 7 is supplied to the air spinning device 9. The air spinning device 9 twists the fiber bundle 8 supplied from the draft device 7 to generate a spun yarn 10. In this embodiment, a pneumatic spinning device that twists the fiber bundle 8 using a swirling air flow is employed. The detailed configuration of the pneumatic spinning device 9 will be described later.

Downstream of the air spinning device 9, a delivery roller 21 and a nip roller that can contact and separate from the delivery roller 21 are provided. The spun yarn 10 sent from the pneumatic spinning device 9 is sandwiched between the delivery roller 21 and the nip roller, and the delivery roller 21 is rotationally driven, so that the spun yarn 10 can be sent toward the winding unit 26.

A first guide 46 for guiding the spun yarn 10 is disposed downstream of the delivery roller 21. The first guide 46 guides the spun yarn 10 to the yarn storage device 22. The first guide 46 is movable in order to draw the spun yarn 10 to the yarn storage device 22 when performing yarn splicing or the like.

The yarn storage device 22 is provided downstream of the first guide 46. The yarn storage device 22 includes a yarn storage roller 41, an electric motor 42 that rotationally drives the yarn storage roller 41, and a yarn hooking member 43. When the spun yarn 10 is wound around the outer peripheral surface of the yarn accumulating roller 41, the spun yarn 10 is temporarily stored.

A yarn hooking member 43 is attached to the downstream end of the yarn accumulating roller 41. The yarn hooking member 43 is supported so as to be rotatable relative to the yarn accumulating roller 41. A permanent magnet is attached to either the yarn hooking member 43 or the yarn accumulating roller 41, and a magnetic hysteresis material is attached to the other. By these magnetic means, a torque is generated that resists the yarn hooking member 43 from rotating relative to the yarn accumulating roller 41. Therefore, only when a force that overcomes this torque is applied to the yarn hooking member 43 (when a predetermined tension or more is applied), the yarn hooking member 43 rotates relative to the yarn accumulating roller 41, and the yarn hooking member 43 rotates. The spun yarn 10 wound around the storage roller 41 can be unwound. When the force overcoming this torque is not applied to the yarn hooking member 43, the yarn storage roller 41 and the yarn hooking member 43 rotate integrally, and the spun yarn 10 is stored in the yarn storage roller 41.

In this way, the yarn storage device 22 unwinds the spun yarn 10 when the downstream yarn tension increases, and stops the disentanglement of the spun yarn 10 when the yarn tension decreases (the spun yarn 10 is likely to loosen). To work. Thereby, the yarn accumulating device 22 can eliminate the slackness of the spun yarn 10 and apply an appropriate tension to the spun yarn 10. Further, the yarn hooking member 43 operates so as to absorb the fluctuation of the tension applied to the spun yarn 10 between the yarn accumulating device 22 and the winding unit 26 as described above. It is possible to prevent the spun yarn 10 between 9 and the yarn storage device 22 from being affected.

The yarn traveling direction on the upstream side of the yarn accumulating device 22 with respect to the installation surface of the spinning machine is substantially horizontal, but the yarn traveling direction on the downstream side of the yarn accumulating device 22 is obliquely upward. Therefore, the yarn path during winding of the spun yarn 10 is bent largely (90 ° or more) by the yarn storage device 22.

A second guide 47 for guiding the spun yarn 10 unwound from the yarn storage roller 41 is provided downstream of the yarn storage roller 41.

A yarn splicing device 23 is provided downstream of the second guide 47. When the spun yarn 10 between the pneumatic spinning device 9 and the package 50 is in a divided state for some reason, the yarn splicing device 23 is connected to the spun yarn 10 (first yarn) from the pneumatic spinning device 9 and the package 50. The spun yarn 10 (second yarn) is spliced. In the present embodiment, the yarn joining device 23 is a splicer device that twists yarn ends together by a swirling air flow generated by compressed air. However, the yarn joining device 23 is not limited to the splicer device, and a mechanical knotter or the like can be employed, for example.

The spinning unit 2 includes a guide device that guides the spun yarn 10 to the yarn joining device 23. The guide device includes a first guide device 27 that transports the first yarn, and a second guide device 28 that transports the second yarn to the yarn joining device 23.

The base end portion of the first guide device 27 is rotatably supported. The first guide device 27 can rotate in the vertical direction with the base end portion as a rotation center. The first guide device 27 is formed in a hollow shape and is connected to a blower (not shown), and can generate a suction air flow. The first guide device 27 can capture the yarn end of the first yarn sent out by the delivery roller 21 by rotating downward (see the chain line in FIG. 1). At this time, the delivery roller 21 and the nip roller are in contact with each other in this embodiment, but the delivery roller 21 and the nip roller may not be brought into contact with each other. The first guide device 27 can convey the first yarn to the yarn joining device 23 by rotating upward after capturing the first yarn.

The base end portion of the second guide device 28 is rotatably supported. The second guide device 28 can be rotated in the vertical direction with the base end portion as a rotation center. The second guide device 28 is also formed in a hollow shape and is connected to a blower (not shown), and can generate a suction air flow. The second guide device 28 can capture the yarn end of the second yarn by rotating upward (see the chain line in FIG. 1). The second guide device 28 can convey the second yarn to the yarn joining device 23 by rotating downward after capturing the second yarn.

In this state, by operating the yarn splicing device 23, the first yarn and the second yarn are spliced, and the spun yarn 10 is brought into a continuous state between the pneumatic spinning device 9 and the package 50. Thereby, winding of the spun yarn 10 around the package 50 can be resumed.

A yarn monitoring device 25 is provided downstream of the yarn joining device 23. The yarn monitoring device 25 monitors the thickness of the traveling spun yarn 10 with a capacitance sensor (not shown). The yarn monitoring device 25 transmits a yarn defect detection signal to the unit controller 30 when detecting a yarn defect of the spun yarn 10 (a portion where the thickness of the spun yarn 10 is abnormal). When the unit controller 30 receives the yarn defect detection signal, the unit controller 30 drives the cutter 24 (yarn cutting device) disposed in the vicinity of the yarn monitoring device 25 to cut the spun yarn 10. The yarn monitoring device 25 is not limited to the electrostatic capacitance type sensor, and for example, the thickness of the spun yarn 10 may be monitored by a light transmission type sensor. Moreover, you may monitor the foreign material contained in the spun yarn 10 as a yarn defect.

A winding unit 26 is disposed downstream of the yarn storage device 22. The winding unit 26 includes a cradle arm 52 and a winding drum 53. The yarn path from the yarn storage device 22 to the winding unit 26 is bent and guided by the downstream guide 48.

The cradle arm 52 can rotatably support a winding tube 51 for winding the spun yarn 10. The cradle arm 52 can be turned around its base end portion as a turning center. Thereby, even if the spun yarn 10 is wound around the take-up tube 51 and the diameter of the package 50 is increased, the winding of the spun yarn 10 can be appropriately continued.

The winding drum 53 rotates while being in contact with the winding pipe 51 or the outer peripheral surface of the package 50 by transmitting the driving force of a winding drum drive motor (not shown). A traverse groove (not shown) is formed on the outer peripheral surface of the winding drum 53, and the spun yarn 10 can be traversed with a predetermined width by the traverse groove. Thus, the winding unit 26 can form the package 50 by winding the spun yarn 10 around the winding tube 51 while traversing the spun yarn 10.

Next, the configuration of the pneumatic spinning device 9 will be described with reference to FIGS. 2A, 2B, and 3. FIG.

As shown in FIG. 2A, the pneumatic spinning device 9 includes a first block 60, a second block 70, a base portion 80, and a power transmission portion 90.

The first block 60 is disposed at the upstream end of the pneumatic spinning device 9. As shown in FIG. 3, the first block 60 includes a fiber guide 61, a spinning chamber 62, and a swirling air flow generation nozzle 63.

The fiber guide 61 guides the fiber bundle 8 drafted by the draft device 7 toward the inside of the pneumatic spinning device 9. The fiber guide 61 is formed with a fiber introduction port 61a, a guide needle 61b, and a travel path 61c. The fiber bundle 8 drafted by the draft device 7 is introduced from the fiber introduction port 61a, travels along the travel path 61c so as to be wound around the guide needle 61b, and is guided into the spinning chamber 62. The air spinning device 9 ejects air from the swirling air flow generating nozzle 63 into the spinning chamber 62, and causes the swirling air flow to act on the fiber bundle 8 in the spinning chamber 62.

The second block 70 includes a hollow guide shaft 71 and a yarn passage 72. The yarn passage 72 is formed at the axial center of the hollow guide shaft body 71. The rear end of the fiber of the fiber bundle 8 is swung around the front end of the hollow guide shaft 71 by the swirling air flow generated by the air jetted from the swirling air flow generating nozzle 63. Thereby, twist is added to the fiber bundle 8 and the spun yarn 10 is produced | generated. The spun yarn 10 is sent to the outside of the pneumatic spinning device 9 from a downstream yarn outlet (not shown) through a yarn passage 72.

As shown in FIG. 2A, the second block 70 includes a first pin (insertion member) 73 and a second pin 74 that protrude in the left direction and the right direction (direction orthogonal to the fiber traveling direction), respectively. The first pin 73 is disposed downstream of the second pin 74. During spinning (the state shown in FIG. 2A), the first pin 73 and the second pin 74 are arranged so that the distance (height) from the base portion 80 is substantially the same.

The base portion 80 is a rectangular frame-shaped member and constitutes an end portion on one side (lower side in the present embodiment) of the air spinning device 9. As shown in FIGS. 2A and 2B, two guide rails 81, a slide portion 82, and a cylinder (drive portion) 83 are attached to the base portion 80.

Each of the two guide rails 81 is a rod-shaped member, and is arranged so that the longitudinal direction of the guide rail 81 and the fiber traveling direction coincide (be parallel). A total of two guide rails 81 are arranged so as to be parallel to each other.

The slide part 82 supports the first block 60 and the second block 70. A rail insertion hole 82a (see an enlarged sectional view of FIG. 2A) for inserting the guide rail 81 is formed in the slide portion 82. In addition, as shown in this enlarged sectional view, the guide rail 81 is supported by the slide part 82 via the bush 82b. A felt seal (seal member) 82c is attached to the outside of the bush 82b (the space between the open hole (inlet) of the rail insertion hole 82a and the bush 82b). This prevents the fibers from entering the bush 82b. The felt seal 82c can be changed to a seal member made of a material other than felt.

The cylinder 83 can move the cylinder rod when air is supplied from a pipe (not shown). The slide part 82 is configured to move integrally with the cylinder rod. Thereby, the slide part 82 can be freely slid by controlling the supply of air to the cylinder 83.

The power transmission unit 90 includes two first guide plates 91 and two second guide plates (guide members) 96. One first guide plate 91 and one second guide plate 96 are arranged on one side with respect to the fiber travel path, and one first guide plate 91 and one second guide plate 96 are located on the fiber travel path. It is arranged on the other side. The two first guide plates 91 and the two second guide plates 96 are attached to the slide portion 82 via predetermined members, and slide integrally with the slide portion 82.

In each first guide plate 91, a penetrating first guide groove 92 is formed. The first guide groove 92 is formed such that the longitudinal direction is the vertical direction (the direction perpendicular to the fiber traveling direction in a side view). The first pin 73 described above is inserted into the first guide groove 92.

A coil spring 93 is attached to each first guide plate 91. The coil spring 93 biases the first guide plate 91 in the direction of the arrow indicated by the thick line in FIG. 2A. A restriction member 94 that restricts sliding or rotation of the first guide plate 91 is disposed at the lower end (base end, end portion on the base portion 80 side) of at least one first guide plate 91. In the state shown in FIG. 2A (normal state such as spinning), the first guide plate 91 is restricted from rotating beyond the restriction position by the restriction member 94. The restricting member 94 is attached to the base portion 80. Even if the slide portion 82 slides, the position of the regulating member 94 does not change. Therefore, when the slide portion 82 is slid, the lower end of the first guide plate 91 is pushed by the restricting member 94, so that a force acts so as to overcome the urging force of the coil spring 93, and the first guide plate 91 is counterclockwise. It can be rotated around (the direction in which the second block 70 moves away from the first block 60) (see FIGS. 4A to 4C described later). As shown in FIG. 2B, the two first guide plates 91 are connected to each other by a connecting portion 95.

The two second guide plates 96 are arranged in parallel with the two first guide plates 91, and are located on the inner side (the second block 70 than the first guide plate 91) with respect to the two first guide plates 91. (Position close to). Each second guide plate 96 is formed with a second guide groove (guide groove) 97. The 2nd guide groove 97 is comprised from the linear part 97a formed in the upstream, and the circular arc part 97b formed in the downstream. The straight line portion 97a is a straight groove that is parallel or substantially parallel to the fiber running direction. The arc portion 97b is a groove formed in an arc shape that curves in the downstream side and the lower side (the direction away from the yarn path). A first pin 73 and a second pin 74 are inserted into each second guide groove 97. The first pin 73 is inserted into both the first guide groove 92 and the second guide groove 97.

As described above, in the pneumatic spinning device 9 of the present embodiment, all members including the cylinder 83 are attached to the base portion 80. In other words, the pneumatic spinning device 9 is modularized. Therefore, since only the pneumatic spinning device 9 can be removed from the spinning machine with a small number of steps, maintenance can be easily performed.

Next, the flow when moving the first block 60 and the second block 70 during maintenance will be described with reference to FIGS. 4A to 4C.

For example, when an operator instructs maintenance from an operation unit connected to the machine control device or the unit controller 30, or when the sensor detects that the air spinning device 9 is clogged, the unit controller 30 83 is controlled so that air is supplied, and the slide portion 82 is slid to the downstream side. The 1st block 60, the 2nd block 70, and the power transmission part 90 move to the downstream side integrally with the slide part 82 (refer FIG. 4B).

Thereby, the first block 60 can be separated from the draft device 7. Since the first block 60 slides linearly along the fiber travel direction, even if the position where the first block 60 is returned slightly deviates from the position before separation, the path (in which the fiber bundle 8 travels) ( Thread path) does not change.

As the slide portion 82 slides downstream, the lower ends of the two first guide plates 91 receive a force from the restricting member 94, and the two first guide plates 91 rotate counterclockwise in FIG. 4B. (See FIG. 4B). Thereby, since each 1st guide groove 92 of the two 1st guide plates 91 pushes the 1st pin 73, the 2nd block 70 moves downstream. Since the two first guide plates 91 rotate about the respective lower ends, the slide amount of the second block 70 is larger than the slide amount of the first block 60. Thereby, the second block 70 can be separated from the first block 60.

Until the sliding amount reaches a predetermined value, the first pin 73 and the second pin 74 move along the straight portion 97a of each second guide groove 97, so the second block 70 moves linearly ( First separation operation). Thereby, it can prevent that the front-end | tip (hollow guide shaft 71) of the 2nd block 70 contacts the 1st block 60. FIG.

Thereafter, the slide portion 82 slides further downstream, whereby the first pin 73 moves along each arc portion 97b, and the second block 70 performs an arc motion (rotation motion) (second separation operation). . At this time, since the second pin 74 remains moving along each linear portion 97a, the second block 70 rotates upward. In other words, the posture of the second block 70 changes. More specifically, the tip (fiber introduction port 61a) of the hollow guide shaft 71 moves in a direction away from the yarn path. Thereby, the hollow guide shaft body 71 can be moved with a small slide amount so that the maintenance of the hollow guide shaft body 71 can be easily performed.

Next, the conventional separation method and the separation method of the present application will be described in comparison with reference to the schematic diagrams of FIGS. 5A and 5B.

Conventional example 1 shown in FIG. 5A has a configuration similar to that of Patent Document 1. The pneumatic spinning device of Conventional Example 1 includes a first block 101, a rail 102, a second block 103, and a cylinder 104. The rail 102 is disposed in a direction along the fiber traveling direction. By driving the cylinder 104, the second block 103 can be moved linearly along the rail 102.

However, in the configuration of Conventional Example 1, the second block 103 cannot be positioned so that the downstream side of the first block 101 and the upstream side of the second block 103 can be visually recognized unless the movement amount of the cylinder 104 is increased. Accordingly, it is necessary to provide a space for sliding the second block 103 around the pneumatic spinning device.

Conventional example 2 shown in FIG. 5B has a configuration similar to that of Patent Document 2. The pneumatic spinning device of Conventional Example 2 includes a first block 111, a second block 112, and a cylinder 113. The first block 111 and the second block 112 can be rotated about the lower end as a rotation center. A regulating member 114 is disposed between the first block 111 and the second block 112. Thereby, the second block 112 can be separated from the first block 111.

In Conventional Example 2, in order to prevent the hollow guide shaft body of the second block 112 from coming into contact with the first block, the first block 111 and the second block 112 are lengthened, and the tip portion of the first block 111 and the first block It is necessary to move the tip of the two blocks 112 substantially linearly. Accordingly, the pneumatic spinning device is increased in size. In this case, the second block 112 cannot be positioned so that the downstream side of the first block 111 and the upstream side of the second block 112 can be visually recognized unless the slide amount is increased as in the first conventional example. For this reason, it is also necessary to provide a space around the pneumatic spinning device.

As described above, in the present embodiment, the first block 60 moves linearly along the fiber traveling direction by the cylinder 83. The second block 70 first moves linearly along the fiber travel direction, and then moves in an arc shape. This eliminates the need to increase the amount of slide or increase the length of each block as in the conventional example, so that the size of the pneumatic spinning device 9 can be made compact.

The direction of movement of the first block 60 and the second block 70 is not limited to the direction shown in the present embodiment. For example, the first block 121 may be moved in an arc as in the modification shown in FIGS. 6A and 6B. FIG. 6A is a diagram showing the position of each part before movement, and FIG. 6B is a diagram showing the position of each part after movement. The pneumatic spinning device of the modification shown in FIGS. 6A and 6B includes a first block 121, a second block 122, a second block guide lever 123, a second block guide rail 124, a cylinder 125, and a regulating member 126. And comprising.

The first block 121 can rotate around the lower end under the power of the cylinder 125. The second block guide lever 123 is a portion corresponding to the first guide plate 91 of the present embodiment. The second block guide lever 123 rotates around the lower end by receiving a force from the first block 121 and restricting the position of the lower end by the restricting member 126. The second block guide rail 124 is a portion corresponding to the second guide groove 97 of the present embodiment. As the second block guide lever 123 rotates, the second block 122 is linearly moved in the fiber travel direction by the second block guide rail 124 and then moved in an arc.

In the above, the

second blocks

70 and 122 move in a circular arc after being linearly moved in the fiber traveling direction. Instead of this, the second block may be linearly moved in a different direction after linearly moving in the fiber traveling direction. Alternatively, the second block may be linearly moved in the fiber traveling direction, then circularly moved, and then linearly moved again. Further, the posture may be changed (for example, upward) without changing the position after the second block is linearly moved in the fiber traveling direction. Further, after the second block is caused to perform an arc motion having a large radius, an arc motion having a small radius may be performed. In the present specification, the linear motion (first separation operation) of the second block is not only a linear motion that coincides with the fiber traveling direction, but also a linear motion slightly deviated from the fiber traveling direction, or a linear motion because the radius is large. It shall also include deemed arc motion. Further, the arc motion is not limited to a circular orbit, and may be an ellipse or other curved shape.

As described above, the pneumatic spinning device 9 of the present embodiment includes the first block 60 and the second block 70. The first block 60 has a fiber guide 61 that guides the fiber bundle 8. The second block 70 is disposed downstream of the first block 60 in the fiber traveling direction, and guides the fiber bundle 8 further downstream. The second block 70 linearly moves away from the first block 60 along the fiber traveling direction, and moves or changes its posture after the first separation operation in a direction different from the first separation operation. The second separation operation can be performed.

Accordingly, the first separation operation is performed to prevent the first block 60 and the second block 70 from contacting each other, and the second separation operation is performed to move the downstream side of the first block 60 and the second block with a small amount of movement. The second block 70 can be moved so that the upstream side of 70 can be visually recognized. Therefore, the space provided around the air spinning device 9 can be reduced, and the size of the air spinning device 9 itself can be suppressed.

In the pneumatic spinning device 9 of the present embodiment, the first block 60 moves in the same direction as the second block 70 when at least the second block 70 performs the first separation operation. Since the direction in which the first block 60 and the second block 70 are separated is the same, the power transmission mechanism can be simplified. For example, the first block 60 and the second block 70 need only be fixed to the slide portion 82.

The pneumatic spinning device 9 of this embodiment includes a second guide plate 96 and a first pin 73. The second guide plate 96 is formed with a second guide groove 97 composed of a linear portion 97a and an arc portion 97b. The first pin 73 is inserted into the second guide groove 97 and moves along with the second block 70 along the second guide groove 97. Thereby, it is possible to cause the second block 70 to perform the first separation operation and the second separation operation with a simple configuration.

In the pneumatic spinning device 9 of the present embodiment, at least the first block 60, the second block 70, the cylinder 83, the guide rail 81, and the slide portion 82 can be integrally attached and detached. Accordingly, at least the first block 60, the second block 70, the cylinder 83, the guide rail 81, and the slide portion 82 can be integrally removed from the spinning machine, so that the maintainability can be improved.

Next, a second embodiment will be described with reference to FIG. In the following description, members similar to those in the first embodiment are denoted by the same reference numerals, and description thereof may be omitted.

The power transmission unit 90 of the present embodiment includes a stepping motor 131 and a ball screw 135 as a driving unit for driving the second block 70, as shown in FIG. 7A. The stepping motor 131 is controlled by the unit controller 30 or the machine base control device. Specifically, the stepping motor 131 includes an output shaft 132. The stepping motor 131 rotates the output shaft 132 according to the number of pulses received from the unit controller 30 or the machine base control device. When the unit controller 30 controls the stepping motor 131, the second block 70 can be moved independently for each spinning unit 2. When the machine control device controls the stepping motor 131, the second blocks 70 of the plurality of spinning units 2 can be moved simultaneously.

The power transmission unit 90 includes a ball screw 135. The ball screw 135 moves the second block 70 using the driving force of the stepping motor 131. The ball screw 135 includes a screw shaft 135a and a movable portion 135b.

The driving force of the stepping motor 131 is transmitted to the transmission shaft 134 via the output shaft 132 and the transmission belt 133. The transmission shaft 134 is coaxial with the screw shaft 135a, and by rotating the transmission shaft 134, the screw shaft 135a rotates. With the above configuration, by driving the stepping motor 131, the movable portion 135b can be slid along the fiber traveling direction. Note that the driving force of the stepping motor 131 can be transmitted to the ball screw 135 without using the transmission belt 133.

The power transmission unit 90 includes a guide rail 136 parallel to the screw shaft 135a, and a slide unit 137 that can slide along the guide rail 136. A first guide plate 138 is fixed to the slide portion 137. The 1st guide plate 138 is the structure equivalent to the 1st guide plate 91 of the said 1st Embodiment. With the above configuration, the second block 70 can be separated from or brought close to the first block 60 using the driving force of the stepping motor 131.

Further, not only the second block 70 but also the first block 60 is configured to be slidable along the guide rail 136. The second block 70 is urged toward the first block 60 by a spring 139 provided at the end of the guide rail 136. Note that the movable range of the first block 60 is restricted by the second guide plate 96 functioning as a stopper. The portion that functions as a stopper is arbitrary, and is not limited to the second guide plate 96.

Next, operations of the first block 60 and the second block 70 when the stepping motor 131 is driven will be described. When the second block 70 is moved toward the first block 60 from the state where the first block 60 and the second block 70 are separated (FIG. 7A), the second block 70 comes into contact with the first block 60. Since the first block 60 is biased toward the second block 70, the first block 60 and the second block 70 are moved by moving the second block 70 further toward the first block 60 in this state. It can move integrally toward the front roller 20 (see FIG. 7B). The unit controller 30 can stop the first block 60 and the second block 70 at desired positions by transmitting pulses corresponding to the movement amount of the second block 70. In addition, the structure which stops the 1st block 60 and the 2nd block 70 is arbitrary, and is not restricted to rotation control of the stepping motor 131, A mechanical brake can also be used.

In this way, the distance between the first block 60 (pneumatic spinning device 9) and the front roller 20 (draft device 7) can be adjusted. Further, by changing the cycle of the pulse transmitted to the stepping motor 131, the rotational speed of the output shaft 132 (and hence the moving speed of the second block 70) can be controlled. How to change the moving speed of the second block 70 is set in advance, but can be adjusted by an operator's operation.

Next, the position control and movement speed control of the second block 70 will be described with reference to FIGS. In the following description, the spinning position is the position of the second block 70 when the pneumatic spinning device 9 performs spinning. In addition, as the position of the second block 70, a first maintenance position and a second maintenance position are determined. The first maintenance position is a position for performing maintenance performed without directing the tip of the hollow guide shaft body 71 upward. For example, the hollow guide shaft body 71 is cleaned by injecting air from the swirling airflow generating nozzle 63 to the hollow guide shaft body 71 located at the first maintenance position. The second maintenance position is a position for performing maintenance performed with the tip of the hollow guide shaft body 71 facing upward. For example, the operator directly accesses the hollow guide shaft body 71 located at the second maintenance position, and cleans the hollow guide shaft body 71 or removes the hollow guide shaft body 71. The first maintenance position and the second maintenance position may be collectively referred to simply as a maintenance position.

The power transmission unit 90 is provided with an unillustrated origin sensor for detecting the origin position of the movement of the movable part 135b at a predetermined position (for example, a position where the first block 60 and the second block 70 are in contact). . Further, the first maintenance position, the second maintenance position, the spinning position, etc. are determined based on the output from the origin sensor. Note that these positions can be adjusted by an operator's operation. With this configuration, the positions of the first block 60 and the front roller 20 can be adjusted with high accuracy. In addition, the position of the 2nd block 70 can also be specified based on the impact etc. when the 2nd block 70 contacts the 1st block 60, without providing an origin sensor.

At the start of maintenance of the pneumatic spinning device 9, the second block 70 is moved from the spinning position to the maintenance position. At this time, the moving speed of the second block 70 is controlled as shown in FIG. First, the unit controller 30 accelerates the second block 70 at the spinning position in a direction away from the front roller 20. Thereafter, when the first block separation position is reached, the first block 60 comes into contact with the second guide plate 96, and the first block 60 and the second block 70 are separated.

It should be noted that the movement speed or acceleration of the second block 70 can be controlled to suppress the impact when the first block 60 contacts the second guide plate 96. For example, the moving speed of the second block at the time of contact can be suppressed by reducing the acceleration until the second block 70 reaches the first block separation position.

Thereafter, the second block 70 continues moving in a direction away from the first block 60 while increasing the moving speed, and the moving speed reaches a predetermined speed. Then, the second block 70 starts decelerating from a position that is a predetermined distance before the target position (first maintenance position or second maintenance position). Thereby, since a sudden stop can be prevented, damage to the second block 70 can be prevented.

After the maintenance of the air spinning device 9, the second block 70 is moved from the maintenance position to the spinning position. At this time, the moving speed of the second block 70 is controlled as shown in FIG. First, the unit controller 30 accelerates the second block 70 in the maintenance position so as to move in a direction approaching the first block 60. Then, after the moving speed of the second block reaches a predetermined speed, the second block starts to decelerate from a position that is a predetermined distance before the contact position with the first block. Thereby, the impact at the time of the 2nd block 70 contacting the 1st block 60 can be suppressed. Thereafter, the first block 60 and the second block 70 move in a direction approaching the front roller 20, and decelerate again from a position that is a predetermined distance before the spinning position. Thereby, since the sudden stop of the 1st block 60 and the 2nd block 70 can be prevented, damage to the 1st block 60 and the 2nd block 70 can be prevented. Further, the first block 60 can be prevented from contacting the front roller 20.

In the present embodiment, two maintenance positions are listed, but may be one, or may be three or more. In the present embodiment, it has been described that the second block 70 is moved at the start of maintenance or after the end of maintenance. However, depending on the type of the spun yarn 10 to be generated, the second block 70 may be moved slightly during spinning. Also good.

In the pneumatic spinning device 9 of this embodiment, at least the first block 60, the second block 70, the stepping motor 131, the ball screw 135, the guide rail 136, and the slide portion 137 are integrally formed as in the first embodiment. Detachable.

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

In the first and second embodiments, the present invention is applied to the air spinning device 9 that performs spinning with the swirling air flow generating nozzle 63 and the hollow guide shaft body 71. However, the pneumatic spinning device that performs air spinning by other methods. The present invention may be applied to. For example, as shown in Patent Document 2, the present invention can be applied to an air spinning apparatus that performs air spinning by applying two swirling air flows having different directions. In this case, the upstream holder (first block) includes a first nozzle through which air to be injected passes to cause the swirling air flow in the first direction to act on the fiber bundle. The downstream holder (second block) includes a second nozzle through which air to be injected passes to cause the swirling air flow in the second direction opposite to the first direction to act on the fiber bundle.

The guide needle 61b may be omitted, and the function of the guide needle 61b may be achieved by the downstream end portion of the fiber guide 61.

In the first embodiment, a pneumatic cylinder has been described as an example of a drive unit for performing sliding, and in the second embodiment, a ball screw and a stepping motor have been described as examples of a drive unit. However, the drive unit is not limited to these, and for example, a hydraulic cylinder or a solenoid may be used instead of the pneumatic cylinder. A servo motor or the like may be used as a motor for driving the ball screw. Further, instead of using the cylinder and the ball screw, a linear motor may be used instead.

In the first embodiment, the direction of the first separation operation and the second separation operation is defined by the second guide groove 97 formed in the second guide plate 96. However, the direction of the first separation operation and the second separation operation may be defined using a configuration other than the second guide groove 97.

In the first embodiment, the first block 60 and the second block 70 are moved when the cylinder 83 slides the first block 60. In the second embodiment, the stepping motor 131 slides the second block 70, and when the positional relationship with the front roller 20 is adjusted, the second block 70 and the first block 60 are slid. The drive unit may move only the first block 60, may move only the second block 70, or may move both the first block 60 and the second block 70.

Instead of the configuration in which the yarn splicing device 23 is provided for each spinning unit 2, a work carriage movable with respect to the plurality of spinning units 2 may be provided in the spinning machine, and the work cart may perform yarn splicing.

Of the fiber bundle 8 spun in the spinning chamber 62 of the pneumatic spinning device 9, the fibers that have not become the spun yarn 10 pass through the space between the second block 70 and the hollow guide shaft 71 and are downstream of the space. It is collected in a collection device (not shown) provided in the spinning machine through the connected suction pipe and a common pipe provided for the plurality of spinning units 2.

In each spinning unit 2, the suction tube has a first tube portion and a second tube portion. The first pipe portion is provided in the first block 60 and extends in the longitudinal direction of the first block 60. The second pipe portion is provided so as to extend in a direction substantially parallel to the longitudinal direction of the straight portion 97 a of the second guide groove 97. The second tube portion may have an extendable tube portion that can be expanded and contracted in the moving direction so as to correspond to the movement of the pneumatic spinning device 9. When the 2nd pipe part has an expansion-contraction pipe part, damage to the 2nd pipe part by movement of air spinning device 9 can be prevented.

The spinning unit 2 may further include a suction device having a third pipe portion in which a suction port capable of sucking fiber waste generated around the pneumatic spinning device 9 is formed. Specifically, the suction port is a position on the side where the fiber introduction port 61 a is provided with respect to the air spinning device 9, and the side where the front roller 20 is provided with respect to the traveling path of the fiber bundle 8. It is provided in the position. Of the third tube portion, the portion where the suction port is formed may be provided independently, or may be attached to the first block 60. The third pipe part is connected to the second pipe part. Thereby, the fiber waste sucked from the suction port is also collected by the collecting device.

The third pipe part will be described in more detail. The third pipe part includes an upstream pipe part in which a suction port is formed and a downstream pipe part extending in a direction different from the upstream pipe part. The longitudinal direction of the downstream pipe part is parallel or substantially parallel to the longitudinal direction of the third pipe part (longitudinal direction of the straight part 97a or fiber running direction). In the portion where the first tube portion is connected to the second tube portion, the first tube portion has a portion arranged in parallel or substantially in parallel with the downstream tube portion. Thereby, the flow of air from the air spinning device 9 and the flow of air from the suction device can be stabilized.

Note that the third pipe part of the suction device may be connected to a pipe other than the second pipe part. The suction device may be omitted.

DESCRIPTION OF SYMBOLS 7 Draft apparatus 8 Fiber bundle 9 Pneumatic spinning apparatus 10 Spinning yarn 60 1st block 63 Swirling airflow generation nozzle 70 2nd block 71 Hollow guide shaft body 73 1st pin (insertion member)
80 Base part 81 Guide rail 82 Slide part 82c Felt seal (seal member)
83 Cylinder (drive unit)
90 Power transmission part 96 2nd guide plate (guide member)
97 Second guide groove (guide groove)

Claims

A first block formed with a travel path for guiding the fiber bundle;
A second block disposed downstream of the first block in the fiber travel direction and guiding the fiber bundle further downstream;
With
The second block moves in a direction different from the first separation operation after the first separation operation and the first separation operation that linearly separates from the first block along the fiber traveling direction, or changes its posture. A pneumatic spinning device capable of performing the second separation operation.
The pneumatic spinning device according to claim 1,
The pneumatic spinning device, wherein the first block is movable.
The pneumatic spinning device according to claim 2,
The pneumatic spinning device according to claim 1, wherein the first block moves in the same direction as the second block when at least the second block performs the first separation operation.
The pneumatic spinning device according to any one of claims 1 to 3,
The pneumatic spinning device according to claim 1, wherein the second separation operation is an arc motion.
The pneumatic spinning device according to any one of claims 1 to 3,
A guide member formed with a guide groove including a linear first portion and a second portion along a direction different from the first portion;
An insertion member that is inserted into the guide groove and moves with the second block along the guide groove;
An air spinning device comprising:
The pneumatic spinning device according to any one of claims 1 to 5,
An air spinning device comprising: a drive unit that generates power for causing the second block to perform the first separation operation and the second separation operation.
The pneumatic spinning device according to claim 6, wherein
The pneumatic spinning device, wherein the driving unit includes at least one of a cylinder, a ball screw, a motor, and a linear motor.
The pneumatic spinning device according to claim 6 or 7,
Guide rails provided along the arrangement direction of the first block and the second block;
A slide part that moves with the second block along the guide rail by the power of the drive part;
A seal member covering between the guide rail and the slide portion;
An air spinning device comprising:
The pneumatic spinning device according to claim 8, wherein
At least the first block, the second block, the drive unit, the guide rail, and the slide unit are detachably integrated with each other.
The pneumatic spinning device according to any one of claims 6 to 9,
The pneumatic spinning device according to claim 1, wherein the driving unit adjusts a position of the second block with respect to the first block in the fiber traveling direction.
The pneumatic spinning device according to any one of claims 6 to 10,
The pneumatic spinning device according to claim 1, wherein the driving unit is configured to be able to control a moving speed of the second block with respect to the first block.
The pneumatic spinning device according to any one of claims 1 to 11,
The pneumatic spinning device according to claim 2, wherein the second separating operation is an operation of changing an attitude of the second block after the second block has moved in a direction different from the first separating operation.
The pneumatic spinning device according to any one of claims 1 to 12,
The first block includes a swirling air flow generation nozzle through which air to be injected passes in order to generate a swirling air flow by injecting air into the spinning chamber;
The pneumatic spinning device according to claim 2, wherein the second block includes a hollow guide shaft body through which the fiber bundle twisted under the action of the swirling air flow passes in the spinning chamber.
The pneumatic spinning device according to any one of claims 1 to 13,
The first block includes a first nozzle through which air to be injected passes to cause a swirling air flow in a first direction to act on the fiber bundle,
The second spinning block includes a second nozzle through which air to be injected passes in order to cause a swirling air flow in a second direction opposite to the first direction to act on the fiber bundle. .
The pneumatic spinning device according to any one of claims 1 to 14,
A draft device for drafting the fiber bundle spun by the pneumatic spinning device;
A winding unit for winding the yarn generated by the pneumatic spinning device into a package;
A spinning machine characterized by comprising:
The spinning machine according to claim 15, wherein
The spinning machine according to claim 1, wherein the first block moves linearly away from the draft device along a fiber traveling direction.