CN115924648A

CN115924648A - Yarn winding machine

Info

Publication number: CN115924648A
Application number: CN202211136280.XA
Authority: CN
Inventors: 野村浩平; 目片努; 泽田晴稔
Original assignee: Murata Machinery Ltd
Current assignee: Murata Machinery Ltd
Priority date: 2021-10-05
Filing date: 2022-09-19
Publication date: 2023-04-07
Also published as: JP2023054863A

Abstract

The invention relates to a yarn winding machine. The spinning machine is provided with a spinning unit (7), a 1 st catching device (107), a 2 nd catching device (29), a piecing device (105), a 1 st duct (95), and a 2 nd duct (96). The 1 st catching device (107) catches the spun yarn (33) on the yarn feeding portion side by suction. The 2 nd catching device (29) sucks and catches the spun yarn (33) on the package (34) side. A yarn splicing device (105) splices the spun yarns (33). The 1 st duct (95) is provided along the arrangement direction of the spinning units (7) and flows the air sucked by the 1 st catching device (107). The 2 nd duct (96) is provided along the arrangement direction of the spinning units (7) at a position different from the 1 st duct (95), and flows the air sucked by the 2 nd catching device (29).

Description

Yarn winding machine

Technical Field

The present invention relates to a yarn winding machine provided with a yarn splicing device.

Background

Jp 2012-57274 a and jp 2018-158788 a disclose a spinning machine including a plurality of spinning units, a yarn splicing cart, and a suction duct. The piecing trolley travels to the spinning unit requiring piecing and stops. The yarn splicing cart sucks and captures a yarn on the spinning device side of the spinning unit and a yarn on the package side of the spinning unit to perform yarn splicing. The yarn chips generated when the yarn is connected by the connection trolley flow in the suction pipeline and are collected.

In the spinning machines disclosed in jp 2012-57274 a and jp 2018-158788 a, the yarn on the spinning device side and the yarn on the package side flow through a common suction duct and are collected. Therefore, the yarn on the spinning device side is wound around the yarn on the package side in the suction duct, and an excessive tension is applied to the yarn. Due to this tension, yarn breakage may occur, the quality of the joint portion may be reduced, or the success rate of the joint may be reduced. The problem is not limited to the spinning device, and the same problem is also present in other yarn winding machines.

Disclosure of Invention

The present invention has been made in view of the above circumstances, and a main object thereof is to prevent yarn breakage, deterioration in quality of a yarn splicing portion, or a decrease in yarn splicing success rate caused by yarn entanglement between a yarn on a yarn supply portion side and a yarn on a package side in a yarn winding machine that performs yarn splicing by sucking and catching the yarn on the yarn supply portion side and the yarn on the package side.

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

According to an aspect of the present invention, there is provided a yarn winding machine configured as follows. That is, the yarn winding machine includes a plurality of winding units, a 1 st catching device, a 2 nd catching device, a splicing device, a suction force generating section, a 1 st duct, and a 2 nd duct. The winding unit includes a yarn supplying section for supplying the yarn and a winding device for winding the yarn to form a package. The 1 st catching device catches the yarn on the yarn feeding unit side by suction. The 2 nd catching device catches the yarn on the package side of the winding device by suction. The yarn splicing device splices the yarn sucked and caught by the 1 st catching device and the yarn sucked and caught by the 2 nd catching device. The attraction force generating unit generates an attraction force used in the 1 st trap device and the 2 nd trap device. The 1 st duct is provided along the arrangement direction of the winding units, and flows the air sucked by the 1 st catching device. The 2 nd duct is provided along the arrangement direction of the winding units at a position different from the 1 st duct, and flows the air sucked by the 2 nd catching device.

Thus, the 1 st duct and the 2 nd duct are separate bodies provided at different positions, and therefore, the yarn on the yarn supply side and the yarn on the package side do not become entangled at the time of splicing. Therefore, yarn breakage at the time of splicing, a decrease in quality of the spliced portion, or a decrease in success rate of splicing can be prevented.

In the yarn winding machine, it is preferable that the 2 nd catching device is provided for each winding unit, has a suction port, and is disposed so that the suction port faces a yarn path from the yarn feeding unit to the winding device, and catches the yarn on the package side by suction.

This allows the 2 nd catching device to catch the yarn on the package side without moving or with a small movement amount.

The yarn winding machine preferably has the following configuration. That is, the winding unit includes a drawing device that draws the yarn from the yarn feeding portion. The 2 nd catching device is disposed to face a position downstream of the drawing device and upstream of the winding device in the yarn path.

This makes it possible to perform yarn splicing using the yarn from the drawing device to the winding device as the yarn on the package side.

In the yarn winding machine, the pressure of the suction force generating section is preferably 3kPa or more and less than 6kPa. Alternatively, the pressure of the suction force generation unit is preferably 3.5kPa to 5 kPa.

Since the yarn in the yarn path is sucked and caught, the yarn can function at a lower pressure than in the case of sucking the yarn stuck to the package.

The yarn winding machine preferably has the following configuration. That is, the yarn winding machine includes a carriage that travels in the arrangement direction and includes at least the 1 st catching device. In a case where the carriage reaches the winding unit and stops in a state where the yarn on the package side is sucked and caught by the 2 nd catching device, the yarn on the yarn supply side is caught by the 1 st catching device as a next operation after the stop.

When the first capture device and the second capture device are provided on the carriage, the first capture device and the second capture device need to be sequentially operated so as not to contact each other. In contrast, in the present invention, the 1 st capturing device may be operated after the arrival of the carriage, and therefore, the time taken for the joint can be shortened.

In the yarn winding machine, it is preferable that a flow passage sectional area of the 1 st duct is larger than a flow passage sectional area of the 2 nd duct.

Thus, the 1 st line can reduce the pressure loss of the suction flow as compared with the 2 nd line.

The yarn winding machine preferably has the following configuration. That is, the yarn winding machine includes a carriage that travels in the arrangement direction. The carriage includes a 1 st catching device, a joint device, and a connecting pipe. The connecting pipe connects the 1 st catching device with the 1 st pipe, and sends the yarn scraps sucked by the 1 st catching device to the 1 st pipe. The 1 st duct is disposed in the 1 st space below the carriage.

Since a structure for supporting the carriage is required below the carriage, a relatively large 1 st space is easily formed. However, since this is an obstacle to the carriage, there are limited members that can be disposed in the 1 st space. Therefore, by disposing the 1 st duct in the 1 st space, the 1 st space can be effectively used. Further, since there are limited members that can be disposed in the 1 st space, the flow path cross-sectional area of the 1 st duct is easily increased.

In the yarn winding machine, it is preferable that the flow path cross-sectional area of the 1 st duct is 1.2 times or more and 1.6 times or less the flow path cross-sectional area of the 2 nd duct.

This enables the 1 st duct to have a good size in terms of layout and pressure loss.

The yarn winding machine preferably has the following configuration. That is, the fly generated in the yarn feeding portion flows through a fly duct provided along the arrangement direction of the winding units and at a position different from the 1 st duct and the 2 nd duct. The cross-sectional flow area of the flying saucer is 5 to 16 times larger than that of the 2 nd pipe. Alternatively, the flow path cross-sectional area of the flying saucer is 10 times or more and 16 times or less the flow path cross-sectional area of the 2 nd duct.

Since the yarn quality is degraded due to the pressure loss of the suction stream flowing through the fly pipe, the pressure loss can be reduced by increasing the cross-sectional area of the flow path of the fly pipe, and thus the degradation of the yarn quality can be sufficiently suppressed.

Preferably, the yarn winding machine includes a carriage that travels in the arrangement direction, and the 2 nd duct is disposed in a 2 nd space that is above the carriage and surrounded by the carriage and a yarn path when viewed in the arrangement direction.

Since a large number of members are arranged in the vicinity of the yarn path, it is difficult to secure a large space in the 2 nd space. Therefore, the feature of the 2 nd duct that the cross-sectional area of the flow path is relatively small can be utilized, and the 2 nd duct can be disposed in the 2 nd space.

The yarn winding machine preferably has the following configuration. That is, the yarn feeding section includes a draft device that drafts a sliver and a spinning device that generates spun yarn. The fly occurring in the yarn feeding portion flows through a fly duct provided along the arrangement direction of the winding units and at a position different from the 1 st duct and the 2 nd duct. The 2 nd duct is disposed at a position surrounded by the yarn feeding portion and the flying duct when viewed along the arrangement direction.

Thus, the feature of the 2 nd duct that the cross-sectional area of the flow path is relatively small can be utilized, and the 2 nd duct can be disposed in a space of a limited size surrounded by the yarn feeding portion and the fly duct.

The yarn winding machine preferably has the following configuration. That is, the yarn winding machine includes a carriage that travels in the arrangement direction. The carriage includes an auxiliary catching device having a suction port, and the suction port is moved so as to approach the package to suck and catch the yarn on the package side. The auxiliary capturing device operates in place of the 2 nd capturing device when the operation condition is satisfied. The yarn dust sucked by the auxiliary catching device flows through the 1 st pipe.

Since the yarn may be stuck to the package, a strong suction flow may be required when sucking and catching the yarn from the package. In this regard, since the auxiliary catching device is connected to the 1 st duct having a large flow passage cross-sectional area, a strong suction flow can be generated, and the yarn of the package can be appropriately sucked and caught.

In the yarn winding machine, it is preferable that the carriage includes an auxiliary shutter for switching between a state in which the auxiliary trap device generates suction flow and a state in which the auxiliary trap device does not generate suction flow by switching between opening and closing of a flow path from the auxiliary trap device to the 1 st duct.

Thus, the flow path is closed by the auxiliary shutter without using the auxiliary trap device, and thus the consumption of the suction flow can be suppressed. In addition, since the auxiliary capturing device is used secondarily, the auxiliary capturing device operates less frequently than the 2 nd capturing device. Therefore, in the 1 st tube, the yarn on the package side and the yarn on the yarn feeding side are entangled with each other, and the possibility of yarn breakage is very low. Therefore, the necessity of providing a cutter for removing the yarn entanglement is low, and the cutter can be omitted, so that the component cost can be reduced.

In the yarn winding machine, it is preferable that a distance from the suction port of the 2 nd catching device to the 2 nd bobbin is shorter than a distance from the suction port of the auxiliary catching device to the 1 st bobbin.

This can reduce the pressure loss in the 2 nd trap device mainly used.

The yarn winding machine preferably has the following configuration. That is, the yarn winding machine includes a yarn waste collection unit that collects yarn waste generated in the winding unit. The 1 st duct and the 2 nd duct are connected to the common yarn waste collecting section.

This can collect the yarn waste collecting units into one unit.

Drawings

Fig. 1 is a front view showing an overall configuration of a spinning machine according to an embodiment of the present invention.

Fig. 2 is a schematic side view showing the spinning unit.

Fig. 3 is a side view showing a state where the spun yarn is broken in the spinning unit and the yarn splicing cart travels to the spinning unit.

Fig. 4 is a side view showing a state where the 2 nd catching means is used for the joint.

Fig. 5 is a side view showing a state where the joint is made using the auxiliary catching device.

Fig. 6 is a view showing a flow of connecting the connection pipe and the pipe connection pipe through the gate valve.

Fig. 7 is a schematic side view of a spinning unit according to a modification.

Detailed Description

A spinning machine (yarn winding machine) 1 according to an embodiment of the present invention will be described with reference to the drawings. In the following description, "upstream side" and "downstream side" refer to an upstream side and a downstream side in a running direction (yarn running direction) of the spun yarn 33, the sliver 35, or the fiber bundle 37 at the time of winding the spun yarn (yarn) 33, respectively.

As shown in fig. 1, the spinning machine 1 includes a blower case 3, a power case 5, a plurality of spinning units (winding units) 7, and a yarn splicing cart (cart) 9. The plurality of spinning units 7 are arranged in a row along a predetermined direction. The direction in which the spinning units 7 are arranged is defined as the arrangement direction. The spinning unit 7 performs spinning using a spinning device 23 and the like described later.

A main blower 93 and a sub blower (suction force generating unit) 98 are disposed in the blower case 3. The main blower 93 generates suction flow in the flying waste pipe 91. A fiber recovery unit 92 is disposed between the fly duct 91 and the main blower 93. The fiber recovery unit 92 recovers and accumulates the fly flowing through the fly duct 91. The sub-blower 98 generates suction flow in the 1 st duct 95 and the 2 nd duct 96 via the yarn waste collecting unit 97. The pressure of the suction force generated by the sub-blower 98 is, for example, 3kPa or more and less than 6kPa, or 3.5kPa or more and 5kPa or less. This pressure is, for example, a measured value of the pressure inside the yarn waste collecting section 97. The pressure may be a measured value of the downstream end of the 1 st duct 95 (that is, the vicinity of a portion of the 1 st duct 95 connected to the yarn waste collecting unit 97). The 1 st duct 95 and the 2 nd duct 96 are merged in the yarn waste collecting section 97, and are connected to the sub-blower 98. The yarn waste collection unit 97 collects and accumulates the yarn waste flowing through the 1 st duct 95 and the 2 nd duct 96. The flying duct 91, the 1 st duct 95, and the 2 nd duct 96 are independent from each other. In other words, the flying duct 91, the 1 st duct 95, and the 2 nd duct 96 are different members and are provided at different positions, respectively.

The power box 5 is provided with a drive source (not shown), a central control unit 13, a display unit 15, and an operation unit 17. The drive source provided in the power box 5 includes an electric motor commonly used by the plurality of spinning units 7.

The central control device 13 centrally manages and controls the respective parts of the spinning machine 1. The central control device 13 is connected to a unit control unit 19 provided in each spinning unit 7 as shown in fig. 2 via a signal line, not shown. In the present embodiment, each spinning unit 7 includes the unit control section 19, but a predetermined number (for example, 2 or 4) of spinning units 7 may share one unit control section 19.

The display unit 15 can display the setting contents for the spinning units 7, information on the state of each spinning unit 7, and the like. The operator operates the operation unit 17 to set the spinning machine 1 and/or to select information displayed on the display unit 15. The display unit 15 and the operation unit 17 may be constituted by a touch panel display.

As shown in fig. 2, each spinning unit 7 includes a draft device 21, a spinning device 23, a yarn accumulating device (drawing device) 25, a 2 nd catching device 29, and a winding device 31. These devices are arranged in order from the upstream side to the downstream side in the traveling direction of the spun yarn 33 and the like. The draft device 21 and the spinning device 23 constitute a yarn feeding section in the spinning unit 7.

The yarn splicing cart 9 is provided movably with respect to each spinning unit 7. One yarn splicing cart 9 is provided for the plurality of spinning units 7. In fig. 1, 1 yarn splicing cart 9 is illustrated, but the spinning machine 1 may include a plurality of yarn splicing carts 9. As described later, the joint carriage 9 includes the joint device 105, the 1 st capturing device 107, and the auxiliary capturing device 109.

The draft device 21 is provided above the spinning unit 7. The draft device 21 includes a plurality of draft roller pairs. Each draft roller pair consists of 2 draft rollers.

Specifically, the draft device 21 includes 4 draft roller pairs. The 4 draft roller pairs are a rear roller pair 41, a 3 rd roller pair 43, an intermediate roller pair 45, and a front roller pair 47 arranged in this order from the upstream side toward the downstream side. A tangential belt 49 is provided on each draft roller of the intermediate roller pair 45.

The 4 draft roller pairs each have a drive roller and a driven roller that face each other. The 4 draft roller pairs are provided with drive sources such as motors, not shown, for the respective drive rollers. Each of the drive rollers is rotationally driven by a drive source about an axis of the drive roller. The driven roller of each draft roller pair is provided so as to be rotatable about its axis via a bearing or the like, not shown.

The draft device 21 is configured to generate a fiber bundle 37 by sandwiching and conveying a sliver 35 supplied from a sliver supply unit (not shown) between draft rollers (between a driving roller and a driven roller) of each draft roller pair, thereby drawing (drafting) the sliver to a predetermined fiber amount (or thickness). The fiber bundle 37 generated by the draft device 21 is supplied to the spinning device 23.

The spinning device 23 is an air-jet spinning device in the present embodiment. The spinning device 23 applies a whirling airflow to the fiber bundle 37 (drafted sliver 35) generated by the draft device 21, thereby twisting the fiber bundle to generate the spun yarn 33. The spinning device 23 is disposed downstream of the draft device 21.

The spun yarn 33 is supplied from a yarn supplying section formed by the draft device 21 and the spinning device 23. The spun yarn 33 generated by the yarn feeding portion travels from the yarn feeding portion toward the winding device 31, and is wound by the winding device 31. Hereinafter, a path along which the spun yarn 33 (or the sliver 35 of the raw material thereof) from the yarn feeding section to the winding device 31 travels is referred to as a "yarn path". The yarn path also includes the position where the yarn feeder and the winding device 31 are present.

The yarn accumulating device 25 temporarily accumulates the spun yarn 33 generated by the spinning device 23 by drawing it out. The yarn accumulating device 25 is disposed in the middle of the yarn path. Specifically, the yarn accumulating device 25 is disposed downstream of the spinning device 23.

The yarn accumulating device 25 includes a yarn accumulating roller 53, an electric motor 55, a yarn hooking member 57, a yarn guide 59, and a yarn accumulation amount detecting sensor 61.

The yarn accumulating roller 53 is rotationally driven by an electric motor 55. The yarn accumulating roller 53 temporarily accumulates the spun yarn 33 by winding it around its outer peripheral surface. The yarn accumulating roller 53 rotates at a predetermined rotational speed with the spun yarn 33 wound around the outer peripheral surface thereof, and thereby can draw out the spun yarn 33 from the spinning device 23 at a predetermined speed.

The yarn hooking member 57 can hook the spun yarn 33. The yarn hooking member 57 is rotated integrally with the yarn accumulating roller 53 in a state where the spun yarn 33 is hooked, thereby guiding the spun yarn 33 to the outer peripheral surface of the yarn accumulating roller 53.

The yarn guide 59 is disposed downstream of the yarn accumulating roller 53. The yarn guide 59 regulates the trajectory of the spun yarn 33 that is waved by the rotating yarn hooking member 57, and guides the spun yarn 33 by stabilizing a yarn path on the downstream side (the winding device 31 side) of the yarn path on which the spun yarn 33 travels from the yarn guide 59.

The yarn accumulating amount detecting sensor 61 can detect the yarn accumulating amount of the yarn accumulating roller 53. The yarn accumulating amount detecting sensor 61 is disposed to face an appropriate position on the outer peripheral surface of the yarn accumulating roller 53. The yarn accumulation amount detection sensor 61 detects the presence or absence of the spun yarn 33 at this position. The yarn accumulation amount detection sensor 61 sends the detected detection signal to the unit control section 19. The unit control unit 19 can detect whether or not the yarn accumulation amount is equal to or larger than a predetermined amount based on the detection signal.

The yarn accumulating device 25 can temporarily accumulate the spun yarn 33 on the outer peripheral surface of the yarn accumulating roller 53, and thus functions as a buffer for the spun yarn 33. This eliminates a problem (e.g., loosening of the spun yarn 33) that occurs when the spinning speed and the winding speed (the traveling speed of the spun yarn 33 wound into the package 34, which will be described later) in the spinning device 23 become different for some reason.

A yarn monitoring device (detection device, yarn detection device) 63 and a spinning sensor 69 (yarn detection device) are provided between the spinning device 23 and the yarn accumulating device 25. The yarn monitoring device 63 and the spun yarn sensor 69 detect the state of the spun yarn 33 at a position upstream (yarn feeding portion side) of the yarn accumulating device 25. The spun yarn 33 generated by the spinning device 23 passes through the yarn monitoring device 63 and the spinning sensor 69 before being accumulated by the yarn accumulating device 25.

The yarn monitoring device 63 monitors the quality of the running spun yarn 33 by an optical sensor, and detects a yarn defect included in the spun yarn 33. The yarn defect includes, for example, an abnormal thickness of the spun yarn 33 and/or foreign matter contained in the spun yarn 33. When detecting a yarn defect of the spun yarn 33, the yarn monitoring device 63 transmits a yarn defect detection signal to the unit control section 19. The yarn monitoring device 63 may monitor the quality of the spun yarn 33 using, for example, a capacitance-type sensor instead of the optical sensor.

The spinning sensor 69 is disposed immediately downstream of the yarn monitoring device 63. The spinning sensor 69 detects the tension of the spun yarn 33 between the spinning device 23 and the yarn accumulating device 25. The spinning sensor 69 transmits a detection signal of the detected tension to the unit control section 19. The unit control section 19 can detect an abnormal portion such as a weak yarn by monitoring the tension detected by the spinning sensor 69. The spinning sensor 69 may be omitted.

In order to maintain the yarn quality, it is preferable to remove the yarn defect and the abnormal portion. The unit control section 19 determines whether or not to cut the spun yarn 33 based on a detection result of at least one of the yarn monitoring device 63 and the spinning sensor 69. The unit control section 19 controls the spinning device 23 to stop the spinning, thereby cutting the spun yarn 33. The spun yarn 33 may be cut by stopping the draft by the draft device 21 (the rotation of the rear roller pair 41). The spinning by the spinning device 23 is substantially interrupted both when the spinning device 23 stops spinning and when the supply of the fiber bundle from the draft device 21 to the spinning device 23 stops. The spinning unit 7 may include a cutter, and the unit control section 19 cuts the spun yarn 33 by the cutter. When the spun yarn 33 is cut by the cutter, the unit control section 19 also performs control so that the spinning by the spinning device 23 is substantially interrupted.

The second catching device 29 catches the spun yarn 33. When the spun yarn 33 is broken, the connection between the spun yarn 33 and the yarn feeding portion is lost. Therefore, a yarn end is formed on the spun yarn 33 connected to the package 34. The 2 nd catching device 29 sucks and catches the yarn end of the spun yarn 33 on the package 34 side.

The 2 nd catching device 29 is provided opposite to the yarn path between the yarn accumulating device 25 and the winding device 31. Further, a suction port 73 is formed in the 2 nd catcher 29. The 2 nd catching device 29 is disposed such that the suction port 73 faces the yarn path between the yarn accumulating device 25 and the winding device 31. In the present embodiment, the direction of the suction port 73 (the axial direction of the suction port 73) is substantially orthogonal to the direction of the yarn path, but may be different from each other in the 2 directions, or may not be orthogonal to each other. In the present embodiment, the 2 nd catching device 29 is fixedly provided, but may be provided so as to be movable. For example, the 2 nd catching device 29 may also be arranged to be able to approach or separate slightly with respect to the yarn path. In other words, the 2 nd capturing device 29 is not provided to move like the auxiliary capturing device 109. In other words, the 2 nd catching device 29 is disposed at a position capable of attracting the spun yarn 33 in the yarn path without substantially moving. When the yarn splicing cart 9 described later operates the spinning unit 7, the 2 nd catching device 29 is located upstream of the yarn splicing device 105 provided in the yarn splicing cart 9.

The yarn splicing device 105 includes a yarn pulling bar not shown. By operating the yarn poking lever, the spun yarn 33 captured by the 2 nd capturing device 29 is taken into the yarn splicing device 105. The joint carriage 9 further includes an auxiliary catching device 109. When the spun yarn 33 on the package 34 side is not caught by the second catching device 29, the auxiliary catching device 109 catches the spun yarn 33 instead of the second catching device 29. The structure of the joint carriage 9 will be described later. In order to bring the spun yarn 33 close to the yarn splicing device 105, the yarn splicing device 105 may be provided so as to be able to approach or separate from the yarn path.

When the spun yarn 33 is broken, the unit control section 19 determines whether or not the operation condition is satisfied. When the operation condition is not satisfied, the spun yarn 33 on the package 34 side is sucked and caught by the second catching device 29. When the operation condition is satisfied, the spun yarn 33 on the package 34 side is sucked and caught by the auxiliary catching device 109. The case where the operation condition is satisfied is, for example, a case where the suction and catching of the spun yarn 33 by the second catching device 29 fails. Whether or not the operating condition is satisfied may be determined according to the cause of the breakage of the spun yarn 33.

When the unit control section 19 determines to use the 2 nd catching device 29, the unit control section 19 controls the 2 nd catching device 29 to suck and catch the spun yarn 33 on the package 34 side on the downstream side of the yarn accumulating device 25 (yarn guide 59). The timing at which the 2 nd catching device 29 starts to apply the suction flow to the spun yarn 33 is a predetermined timing after the yarn 33 is cut and before the yarn end of the spun yarn 33 on the package 34 side passes through the 2 nd catching device 29. For example, the timing can be determined based on the detection result of at least one of the yarn monitoring device 63, the spinning sensor 69, and the yarn accumulation amount detection sensor 61.

The 2 nd capturing device 29 includes a suction tube 71. A suction port 73 is formed at the tip (one end in the longitudinal direction) of the suction tube 71. The suction port 73 opens to a middle portion of the yarn path formed in the spinning unit 7. As shown in fig. 3, the suction tube 71 is connected to the 2 nd pipe 96. As described above, the suction flow generated by the sub blower 98 flows in the 2 nd pipe 96. With this configuration, the 2 nd catching device 29 sucks and catches the spun yarn 33 using the suction flow generated by the sub-blower 98.

In the present embodiment, the 2 nd trap device 29 is provided with a gate 77. The state of the 2 nd catcher 29 is changed between the suction state and the suction stop state by the shutter 77. The shutter 77 is disposed, for example, between the suction port 73 and a portion of the 2 nd trap device 29 on the downstream side of the suction port 73 in the air flow direction. The shutter 77 can be constituted by an opening and closing mechanism having a plate-like member, for example. The shutter 77 can be opened and closed by the control of the unit control unit 19. In addition, the gate 77 can be omitted from the 2 nd catcher 29.

When the spun yarn 33 is normally spun without being broken, the 2 nd catching device 29 does not need to be operated. The case where the spinning is normally performed is a case where the spun yarn 33 is being supplied by the yarn supplying section (the draft device 21 and the spinning device 23) and the spun yarn 33 is being wound by the winding device 31. In this case, the unit control unit 19 closes the shutter 77, and thus the 2 nd catcher 29 is in the suction stop state. Therefore, energy saving of the spinning machine 1 can be achieved.

When the spun yarn 33 is broken and the spinning is interrupted, the unit control section 19 opens the shutter 77 when the unit control section 19 determines to use the 2 nd catching device 29. When considering that the spun yarn 33 is broken in a part of the spinning device 23 due to the stop of the spinning by the spinning device 23, a specific timing at which the shutter 77 is opened is delayed from the timing at which the spinning is stopped, and the spun yarn 33 remains on the yarn accumulating roller 53 of the yarn accumulating device 25. At this timing, the state of the 2 nd catching device 29 is changed from the suction stopped state to the suction state, and therefore the 2 nd catching device 29 can catch the spun yarn 33 on the package 34 side. The timing at which the shutter 77 is opened can be arbitrarily changed.

The winding device 31 winds the spun yarn 33 that has passed through the yarn accumulating device 25 to form a package 34. The winding device 31 is disposed downstream of the yarn accumulating device 25.

The winding device 31 includes a cradle arm 81, a winding drum 83, and a traverse guide 85.

The swing arm 81 is supported to be swingable about a support shaft 87, and rotatably supports the bobbin 32 for winding the spun yarn 33 (and thus the package 34). The winding drum 83 rotates while being in contact with the outer peripheral surface of the bobbin 32 or the package 34, thereby rotationally driving the package 34 in the winding direction. The winding device 31 drives the winding drum 83 by an electric motor, not shown, while reciprocating the traverse guide 85 by a driving means, not shown. Thus, the winding device 31 can wind the spun yarn 33 around the package 34 while traversing the spun yarn 33. A drive source for the traverse guide 85 may be provided for each spinning unit 7, or a drive source for collectively driving the traverse guides 85 of the plurality of spinning units 7 may be provided. Similarly, a drive source for the winding device 31 may be provided for each spinning unit 7, or a drive source for collectively driving the winding devices 31 of the plurality of spinning units 7 may be provided.

In the present embodiment, a waxing device 65 and a yarn running sensor 67 are provided between the 2 nd catching device 29 and the winding device 31. The spun yarn 33 having passed through the yarn accumulating device 25 passes through the waxing device 65 before being wound into the package 34 by the winding device 31, and passes near the yarn travelling sensor 67.

The waxing device 65 can hold the wax applied to the spun yarn 33. The waxing device 65 can wax the spun yarn 33 running between the yarn accumulating device 25 and the winding device 31.

The yarn running sensor 67 is disposed in the vicinity of the downstream side of the waxing device 65. The yarn travelling sensor 67 can detect whether the spun yarn 33 is travelling at a predetermined position on the yarn path, in other words, can detect the presence or absence of the spun yarn 33. The yarn running sensor 67 sends a detection signal to the unit control unit 19.

The unit control section 19 determines whether or not the spun yarn 33 is successfully captured by the 2 nd capturing device 29 based on the detection signals received from the yarn accumulating amount detecting sensor 61 and the yarn running sensor 67. That is, when both the yarn accumulation amount detection sensor 61 and the yarn running sensor 67 do not detect the spun yarn 33 after the 2 nd catching device 29 performs the operation of catching the spun yarn 33, the unit control portion 19 determines that the catching of the spun yarn 33 by the 2 nd catching device 29 has failed. Instead of the configuration of the present embodiment, a yarn detection sensor may be provided near the suction port 73 or in the suction tube 71. In this case, when the yarn detection sensor of the 2 nd catching device 29 detects the spun yarn 33, the unit control portion 19 determines that the catching of the spun yarn 33 by the 2 nd catching device 29 is successful.

As shown in fig. 1, the spinning machine 1 is provided with a rail 101. The rail 101 is arranged to extend along the arrangement direction of the spinning units 7. The joint carriage 9 is configured to be able to travel on the rail 101. Thereby, the yarn splicing cart 9 can move relative to the plurality of spinning units 7.

The yarn splicing cart 9 moves to an operation position corresponding to the spinning unit 7 where the spun yarn 33 is cut, and performs yarn splicing in the spinning unit 7. The yarn splicing cart 9 cooperates with the 2 nd catching device 29 and the like provided in the spinning unit 7, or performs the yarn splicing process using a device (an auxiliary catching device 109 and the like described later) provided in the yarn splicing cart 9.

The joint carriage 9 includes traveling wheels 103, a joint device 105, a 1 st capturing device 107, and an auxiliary capturing device 109. The joint carriage 9 further includes a carriage control unit 10 shown in fig. 2 and the like.

The traveling wheel 103 is configured to be rotatably driven by a drive unit not shown. The traveling wheels 103 are driven, whereby the yarn splicing cart 9 can travel with respect to each of the plurality of spinning units 7.

The 1 st catching device 107 is a member having a tubular part. An opening is formed at the front end of the 1 st catching device 107. As shown in fig. 3, the 1 st capturing device 107 is connected to the 1 st duct 95 via a connecting pipe 108 and a duct connecting pipe 114. As described above, the suction flow generated by the sub blower 98 flows in the 1 st duct 95. With this configuration, the 1 st catching device 107 sucks and catches the spun yarn 33 using the suction flow generated by the sub-blower 98.

The 1 st catching device 107 is supported to be rotatable. The tip end of the first catching device 107 can be moved closer to or retreated from the spinning device 23 by the rotation thereof. When the spun yarn 33 is broken, the 1 st catching device 107 can suck and catch the yarn end of the spun yarn 33 on the yarn feeding portion side.

The auxiliary catching device 109 is a member having a tubular portion. A suction port 117 is formed at the front end of the auxiliary trap 109. As shown in fig. 3, the auxiliary capturing device 109 is connected to the connection pipe 108 via an auxiliary pipe 110, and is connected to the 1 st pipe 95. With this configuration, the auxiliary catching device 109 sucks and catches the spun yarn 33 using the suction flow generated by the sub-blower 98. An auxiliary shutter 111 is provided in the auxiliary pipe 110. The auxiliary shutter 111 can switch between a closed state and an open state. In the closed state, the auxiliary duct 110 is closed, and therefore the suction flow of the 1 st duct 95 cannot be applied to the auxiliary trap 109. On the other hand, since the auxiliary duct 110 is not closed in the opened state, the suction flow of the 1 st duct 95 can be applied to the auxiliary trap 109. The unit control unit 19 opens the auxiliary shutter 111 only when it is determined to use the auxiliary capturing device 109. This can suppress the amount of air consumption. The auxiliary pipe 110 may be directly connected to the pipe connection pipe 114 or the 1 st pipe 95 without the connection pipe 108.

The auxiliary catching device 109 is supported to be rotatable. By rotating the auxiliary catch device 109, the suction port 117 can be moved to a position close to the winding device 31 (close position) or a retracted position (retracted position). When the spun yarn 33 is broken, the auxiliary catch device 109 can suck and catch the spun yarn 33 on the package 34 side from the suction port 117.

The first catching device 107 is pivoted to one side, so that the tip thereof moves in a direction approaching the spinning device 23, and catches the yarn end of the spun yarn 33 in a state approaching the spinning device 23. After that, the 1 st catching device 107 is rotated to the other side. Thereby, the leading end of the 1 st catching device 107 moves in a direction away from the spinning device 23. As shown by solid lines in fig. 4 and 5, in a state where the 1 st catching device 107 is retracted from the spinning device 23, the spun yarn 33 between the caught yarn end and the spinning device 23 has a portion located on the downstream side of the yarn splicing device 105.

When the auxiliary catching device 109 is rotated to one side, the suction port 117 moves in a direction approaching the winding device 31, and catches the spun yarn 33 at a position approaching the winding device 31. Thereafter, the auxiliary catching device 109 is rotated to the other side. Thereby, the suction port 117 of the auxiliary catch device 109 moves in a direction away from the winding device 31. As shown by the solid line in fig. 5, at the position where the auxiliary catching device 109 retreats from the winding device 31, the spun yarn 33 caught between the yarn end and the package 34 has a portion located on the upstream side of the yarn splicing device 105.

After the yarn 33 is cut, the yarn splicing device 105 splices the yarn 33 on the yarn supply side captured by the 1 st capturing device 107 with the yarn 33 on the package 34 side captured by the 2 nd capturing device 29 or the auxiliary capturing device 109. In the present embodiment, the splicer device 105 is a splicing device that splices yarn ends with each other by a flow of whirling air. The splicing device 105 is not limited to the splicing device described above, and for example, a mechanical knotter or the like may be used.

The carriage control unit 10 is configured with a known computer having a CPU, ROM, RAM, and the like, which are not shown. The carriage control unit 10 controls the operation of each unit provided in the joint carriage 9, thereby controlling the joint processing performed by the joint carriage 9.

The splice cart 9 is normally on standby at an appropriate position. When the spun yarn 33 is broken in any one of the spinning units 7, the yarn splicing cart 9 moves to the spinning unit 7 in which the broken spun yarn 33 is generated. When the joint carriage 9 is in the standby state, no suction flow is generated in the 1 st catching device 107. Then, at the timing of reaching the spinning unit 7, a suction flow is generated in the 1 st catching device 107.

Specifically, the connection pipe 108 is connected to the 1 st duct 95 via a duct connection pipe 114. The connection pipe 108 moves integrally with the joint carriage 9. The duct connecting pipe 114 is disposed at a position corresponding to the spinning unit 7. As shown in the uppermost drawing of fig. 6, before the yarn splicing cart 9 reaches the spinning unit 7, the duct connecting pipe 114 is closed by the gate valve 113. Then, as shown in fig. 6, when the yarn splicing cart 9 reaches the spinning unit 7, the connection pipe 108 is moved by pressing the gate valve 113, the duct connection pipe 114 is opened, and the connection pipe 108 and the duct connection pipe 114 are aligned. Thus, the connection pipe 108 is connected to the 1 st pipe 95, and therefore, a suction flow can be generated from the 1 st capturing device 107. Thereafter, the junction carriage 9 is moved again, whereby the pipe connection pipe 114 is closed by the gate valve 113.

Next, the operation of each section when the spun yarn 33 is broken and the spun yarn is stopped in the state of fig. 2 and pieced by the piecing device 105 will be described. In the following, an example in which the joint is performed using the 2 nd capturing device 29 without using the auxiliary capturing device 109 will be described.

First, the unit control section 19 stops the yarn feeding of the yarn feeding section (the spinning device 23 and/or the draft device 21) based on the yarn defect detection signal input from the yarn monitoring device 63. At this time, the unit controller 19 also stops the winding device 31. Since the yarn feeding of the yarn feeding portion is stopped, the spun yarn 33 is cut. As a result, as shown in fig. 3, the spun yarn 33 is broken.

Further, at an appropriate timing after the yarn monitoring device 63 detects the yarn defect, the unit control section 19 transmits a yarn splicing request signal to the carriage control section 10. The carriage control unit 10 that has received the yarn splicing request signal stops the yarn splicing carriage 9 after traveling to the spinning unit 7 where the spun yarn 33 is cut. Fig. 3 shows a case where the yarn splicing cart 9 arrives at the spinning unit 7 immediately after the yarn splicing operation has been completed, but the arrival timing may be delayed from the timing shown in fig. 3.

After the spun yarn 33 is broken, the winding device 31 stops the rotation in a short time. Therefore, in a state where the winding device 31 is completely stopped, the spun yarn 33 is continuously wound between the yarn accumulating device 25 and the package 34. After that, the unit controller 19 drives the winding device 31 again. As a result, the spun yarn 33 on the yarn accumulating device 25 side is wound into the package 34 by the winding device 31.

The spun yarn 33 remaining on the yarn accumulating roller 53 of the yarn accumulating device 25 is pulled out by driving the winding device 31, and the amount of the spun yarn 33 accumulated on the yarn accumulating roller 53 is reduced. The unit control unit 19 monitors a detection signal of the yarn accumulation amount detection sensor 61.

The unit control section 19 opens the closed shutter 77 and starts the suction of the 2 nd catching device 29 at a timing slightly before the spun yarn 33 is separated from the yarn accumulating device 25. This timing can be, for example, a timing when the yarn accumulated amount detection sensor 61 detects that the accumulated amount of the spun yarn 33 is equal to or less than a predetermined amount and the winding is continued for a predetermined time.

Then, while the spun yarn 33 on the package 34 side is being wound around the package 34, the unit control section 19 stops the winding by the winding device 31 again at a timing when the yarn end of the spun yarn 33 is located in the region where the yarn end can be caught by the 2 nd catching device 29. The timing of stopping the winding by the winding device 31 may be, for example, substantially the same timing as the timing at which the yarn end of the spun yarn 33 remaining on the yarn accumulating roller 53 is separated from the yarn accumulating roller 53 and passes through the yarn guide 59. Instead of stopping the winding, the unit control section 19 may decelerate the winding so that the yarn end of the spun yarn 33 can travel in a state of being caught by the 2 nd catching device 29. As a result, the spun yarn 33 can be sucked and caught from the suction port 73 by the 2 nd catching device 29.

At this time, the unit control section 19 determines whether or not the capturing by the 2 nd capturing device 29 is successful based on the detection results from the yarn accumulating amount detecting sensor 61 and the yarn running sensor 67.

When determining that the catching by the 2 nd catching device 29 is successful, the unit control section 19 determines whether or not the yarn splicing cart 9 has reached the spinning unit 7, and waits until the yarn splicing cart reaches the spinning unit if the yarn splicing cart has not reached the spinning unit.

In a state where the yarn splicing cart 9 is stopped at the working position corresponding to the spinning unit 7, the suction port 73 of the suction tube 71 is located upstream of the yarn splicing device 105. Therefore, when the yarn splicing cart 9 arrives, the spun yarn 33 on the package 34 side held by the 2 nd catching device 29 faces the yarn splicing device 105 of the yarn splicing cart 9.

The carriage control unit 10 controls the yarn splicing carriage 9 to move the 1 st catching device 107 to a position where the spun yarn 33 on the yarn feeding portion side can be caught as shown by a chain line in fig. 4 as a next operation after the stop when the spun yarn 33 is caught by the 2 nd catching device 29 is grasped by the spinning unit 7 after the yarn splicing carriage 9 is stopped. At substantially the same time, the unit control section 19 restarts supplying the spun yarn 33 on the yarn supplying section side. As shown by the solid line in fig. 4, the carriage controller 10 guides the spun yarn 33 on the yarn supply portion side captured by the 1 st capturing device 107 to the lower yarn splicing device 105. Further, the carriage control unit 10 may move the 1 st catching device 107 immediately when the yarn joining carriage 9 stops, in a case where it is recognized that the spun yarn 33 is caught before the yarn joining carriage 9 stops.

In this state, the unit control section 19 operates the yarn splicing device 105 to splice the spun yarn 33 on the package 34 side and the spun yarn 33 on the yarn supply side, which are sucked by the second catching device 29. In this joint, the excess spun yarn 33 is cut, sucked into the 2 nd catching device 29 or the 1 st catching device 107, and discarded. The spun yarn 33 is continuously fed from the yarn feeding portion at the yarn splicing portion, and the spun yarn 33 is accumulated by the yarn accumulating device 25.

At substantially the same time as the end of the splicing, the winding device 31 starts driving, and the winding device 31 restarts winding the package 34. The shutter 77 is closed at an appropriate timing after the end of the joint. In this way, the spinning unit 7 returns to the normal state of fig. 2.

Next, a case where the joint is performed by using the auxiliary capturing device 109 instead of the 2 nd capturing device 29 will be described. As described above, the unit control section 19 determines whether or not the suction catching of the spun yarn 33 by the 2 nd catching device 29 fails based on the detection signals of the yarn accumulating amount detection sensor 61 and the yarn running sensor 67. The carriage control unit 10 receives the determination result from the unit control unit 19. Upon receiving the determination result indicating that the suction and catching of the spun yarn 33 by the 2 nd catching device 29 has failed, the cart control unit 10 brings the auxiliary catching device 109 of the yarn joining cart 9 close to the winding device 31 after the yarn joining cart 9 reaches the working position for the spinning unit 7. In this state, the package 34 is rotated in the direction opposite to the winding direction by an appropriate driving means. Thereby, the auxiliary catching device 109 can catch the spun yarn 33 on the package 34 side. Thereafter, the auxiliary catch device 109 is retracted from the winding device 31. As a result, as shown in fig. 5, the spun yarn 33 on the package 34 side is guided to the yarn splicing device 105. The operation of the joint carriage 9 thereafter is the same as that of the joint using the 2 nd catcher 29.

Next, the 1 st duct 95 and the 2 nd duct 96 will be described in detail.

In a conventional spinning machine, spun yarn on the yarn supply side that is drawn and caught at the time of piecing and spun yarn on the package side flow through the same duct. In this case, there is a possibility that the yarn breakage occurs due to the winding of 2 spun yarns, and the joint may fail. In this regard, in the spinning machine 1 of the present embodiment, the spun yarn 33 on the yarn feeding portion side flows through the 1 st duct 95, and the spun yarn 33 on the package 34 side flows through the 2 nd duct 96. This prevents the spun yarns 33 from being entangled with each other during the yarn splicing, and thus the frequency of yarn breakage can be reduced.

When the spun yarn 33 on the package 34 side is sucked and caught by the auxiliary catching device 109, the spun yarn 33 on the package 34 side and the spun yarn 33 on the yarn feeding portion side flow through the same 1 st duct 95. However, the frequency of use of the auxiliary catching device 109 is lower than that of the 2 nd catching device 29, and since a yarn break does not always occur when the 2 spun yarns 33 flow in one duct, the occurrence of a yarn break in the joint is of such a degree that it hardly becomes a problem in practice. Further, for example, a cutter for cutting the wound yarn may be provided in the connection pipe 108 or the pipe connection pipe 114.

The 1 st duct 95 is disposed in the 1 st space 121 below the joint carriage 9. The 1 st space 121 supports the joint carriage 9 and is therefore relatively large. Further, since the joint carriage 9 travels above the 1 st space 121, there are also limited devices that can be disposed in the 1 st space 121. For example, it is difficult to dispose a device related to winding the spun yarn 33 in the 1 st space 121. Therefore, the flow path cross-sectional area of the 1 st duct 95 can be made relatively large.

The flow path cross-sectional area is an area of a space through which the suction flow can flow in a cross section obtained by cutting the 1 st duct 95 on a plane perpendicular to the longitudinal direction (the direction of the suction flow). By increasing the flow path cross-sectional area, the pressure loss can be reduced, or the suction force generated from the 1 st trap 107 or the auxiliary trap 109 can be increased. In the present embodiment, when the auxiliary catching device 109 is used, it is preferable to generate a strong suction flow in order to suck and catch the spun yarn 33 attached to the package 34, and therefore, it is preferable.

Further, the distance from the suction port 73 of the 2 nd capturing device 29 to the 2 nd duct 96 (i.e., the length of the suction tube 71) is shorter than the distance from the suction port 117 of the auxiliary capturing device 109 to the 1 st duct 95. This can reduce the pressure loss of the second trap device 29 mainly used.

In fig. 3 viewed along the arrangement direction, the 2 nd duct 96 is disposed in the 2 nd space 122, and the 2 nd space 122 is located above the yarn joining carriage 9 and at least partially surrounded by the yarn joining carriage 9 and the yarn path (specifically, the yarn path from the draft device 21 to the yarn accumulating device 25). The 2 nd space 122 can also be represented as a space above the splice trolley 9 and below the yarn path. The 2 nd space 122 can also be expressed as a space surrounded by the yarn feeding portion and the flying saucer 91. In the 2 nd space 122, a large number of members related to the processing of the spun yarn 33, for example, the draft device 21, the spinning device 23, and the like are arranged, and thus it is difficult to secure a large space.

Thus, the 1 st space 121 can easily secure a large space, whereas the 2 nd space 122 is difficult to secure a large space. Since the second catching device 29 catches the opposed spun yarn 33 by suction, the required suction force is smaller than that of the auxiliary catching device 109. In view of the above, in the present embodiment, the flow path sectional area of the 1 st duct 95 is larger than that of the 2 nd duct 96. Specifically, the flow path cross-sectional area of the 1 st duct 95 is preferably 1.2 times or more and 1.6 times or less the flow path cross-sectional area of the 2 nd duct 96. However, the flow path cross-sectional area of the 1 st pipe 95 may be equal to or less than the flow path cross-sectional area of the 2 nd pipe 96.

The flow path cross-sectional area of the flying duct 91 is larger than the flow path cross-sectional areas of the 1 st duct 95 and the 2 nd duct 96. Specifically, the flow path cross-sectional area of the flying saucer 91 is preferably 4 to 12 times, more preferably 8 to 12 times, the flow path cross-sectional area of the 1 st duct 95. The flow path cross-sectional area of the flying duct 91 is preferably 5 times or more and 16 times or less, and more preferably 10 times or more and 16 times or less, of the flow path cross-sectional area of the 2 nd duct 96. As an example, the 1 st duct 95 has a flow path cross-sectional area of 150cm ² The flow path cross-sectional area of the 2 nd pipe 96 was 100cm ² The flow path cross-sectional area of the flying saucer 91 is 1500cm ² . By increasing the cross-sectional area of the flow path of the fly ash duct 91 in this mannerSince pressure loss is less likely to occur in the flying yarn duct 91, a substantially constant suction force can be applied to the yarn feeding portions of the plurality of spinning units 7. This stabilizes the operation of the spinning device 23 and makes the yarn quality constant.

When the position of the 2 nd duct 96 is described from another point of view, it is a position overlapping with the joint carriage 9 in a plan view and a position overlapping with the flying duct 91 in a front view. The height of the 2 nd catching device 29 and the 2 nd pipe 96 may be the same or different. In the present embodiment, the air and the yarn waste sucked by the 2 nd catching device 29 flow through the 2 nd duct 96, but another yarn waste may flow through the duct. For example, when a suction device for sucking and removing the unnecessary spun yarn 33 remaining in the yarn accumulating device 25 is provided, the suction device may be connected to the 2 nd duct 96. In the present embodiment, the capturing device connected to each of the 1 st duct 95 and the 2 nd duct 96 is an example, and may be different from the present embodiment. For example, the 2 nd capturing device 29 and the auxiliary capturing device 109 may be connected to the 2 nd pipe 96, and the 1 st capturing device 107 may be connected to the 1 st pipe 95.

Next, a modified example of the above embodiment will be explained. Fig. 7 is a schematic side view of a spinning unit 7 according to a modification. In the description of the present modification, the same or similar components as those of the above embodiment are denoted by the same reference numerals in the drawings, and the description thereof may be omitted.

The spinning machine 1 of the present modification is configured without the 2 nd catching device 29 from the above embodiment. In the spinning machine 1 of the present modification, the spun yarn 33 on the package 34 side is sucked and caught by the 2 nd catching device 131 provided in the yarn splicing cart 9. The function of the 2 nd capturing device 131 is the same as the auxiliary capturing device 109 of the above embodiment.

In the above embodiment, the auxiliary pipe 110 connected to the auxiliary trap 109 and the connection pipe 108 are joined to the 1 st pipe 95. In contrast, in the present modification, the suction tube 132 connected to the 2 nd capturing device 131 is connected to the 2 nd pipe 134. The 2 nd pipe 134 is provided below the joint carriage 9, similarly to the 1 st pipe 95. A gate valve 133, which operates in the same manner as the gate valve 113, is provided between the suction tube 132 and the 2 nd pipe 134.

With the above configuration, in the spinning machine 1 of the present modification, the spun yarn 33 on the yarn feeding portion side flows through the 1 st duct 95, and the spun yarn 33 on the package 34 side flows through the 2 nd duct 134. This prevents the spun yarns 33 from being entangled with each other during the yarn splicing, and therefore, the frequency of yarn breakage can be reduced.

In the present modification, the gate valve 133 and the 2 nd pipe 134 are located below the joint carriage 9. Instead of this, the gate valve 133 and the 2 nd pipe 134 may be positioned above the junction carriage 9. Further, the 1 st duct 95 may be positioned above the joint carriage 9, and the 2 nd duct 134 may be positioned below the joint carriage 9. The 1 st pipe 95 and the 2 nd pipe 134 may be located above the junction carriage 9.

As described above, the spinning machine 1 of the present embodiment and the modification includes the plurality of spinning units 7, the 1 st catching device 107, the 2

nd catching devices

29 and 131, the joint device 105, the sub-blower 98, the 1 st duct 95, and the 2

nd ducts

96 and 134. The spinning unit 7 includes a yarn supplying section for supplying the spun yarn 33 and a winding device 31 for winding the spun yarn 33 to form a package 34. The 1 st catching device 107 catches the spun yarn 33 on the yarn feeding portion side by suction. The 2

nd catching devices

29 and 131 suck and catch the spun yarn 33 on the package 34 side of the winding device 31. The yarn splicing device 105 splices the spun yarn 33 sucked and caught by the 1 st catching device 107 with the spun yarn 33 sucked and caught by the 2

nd catching devices

29 and 131. The sub-blower 98 generates an attraction force used in the 1 st trap device 107 and the 2

nd trap devices

29, 131. The 1 st duct 95 is provided along the arrangement direction of the spinning units 7, and allows the air sucked by the 1 st catching device 107 to flow. The 2

nd ducts

96, 134 are provided along the arrangement direction of the spinning units 7 at positions different from the 1 st duct 95, and the air sucked by the 2

nd catching devices

29, 131 flows.

Accordingly, the 1 st duct 95 and the 2

nd ducts

96 and 134 are separate bodies provided at different positions, and therefore, the yarn on the yarn feeding side and the yarn on the package side do not twist at the time of yarn splicing. Therefore, yarn breakage at the time of splicing, a decrease in quality of the joint portion, or a decrease in success rate of splicing can be prevented.

In the spinning machine 1 of the present embodiment, the 2 nd catching device 29 is provided for each spinning unit 7, and has a suction port 73, and the suction port 73 is disposed to suck and catch the spun yarn 33 on the package 34 side toward the yarn path from the yarn feeding section to the winding device 31.

This allows the 2 nd catching device 29 to catch the spun yarn 33 on the package 34 side without moving or with a slight movement amount.

In the spinning machine 1 of the present embodiment, the spinning unit 7 includes the yarn accumulating device 25 that draws the spun yarn 33 from the yarn feeding portion. The 2 nd catching device 29 is disposed to face a position downstream of the yarn accumulating device 25 and upstream of the winding device 31 in the yarn path.

This allows the yarn from the yarn accumulating device 25 to the winding device 31 to be pieced together as the spun yarn 33 on the package 34 side.

In the spinning machine 1 of the present embodiment, the pressure of the suction force of the sub-blower 98 is 3kPa or more and less than 6kPa. Alternatively, the pressure of the suction force of the sub-blower 98 is 3.5kPa to 5 kPa.

Since the spun yarn 33 in the yarn path is sucked and caught, the spun yarn 33 can function at a lower pressure than the case of sucking the spun yarn 33 attached to the package 34. Specifically, in the conventional spinning machine which does not include the 2 nd catching device 29 of the present embodiment and catches the yarn on the package side only with the catching device equivalent to the auxiliary catching device 109, the pressure of the suction force of the sub-blower exceeds 6kPa. In the present embodiment, since the second catching device 29 mainly catches the spun yarn 33 on the package 34 side, the suction force of the sub-blower 98 can be determined preferentially when the spun yarn 33 on the yarn feeding portion side is caught by the first catching device 107. The 1 st catching device 107 is different from the auxiliary catching device 109 in that it only needs to catch the spun yarn 33 supplied from the yarn feeding section, and therefore the suction force of the sub-blower 98 can be reduced compared to the conventional spinning machine.

The spinning machine 1 of the present embodiment includes the yarn splicing cart 9, and the yarn splicing cart 9 travels in the arrangement direction and includes at least the 1 st catching device 107. When the yarn splicing cart 9 reaches the spinning unit 7 and stops in a state where the 2 nd catching device 29 sucks and catches the spun yarn 33 on the package 34 side, the 1 st catching device 107 catches the spun yarn 33 on the yarn feeding portion side without waiting for the operation of the spinning unit 7 as the next operation after the stop.

Thus, when the 1 st capturing device 107 and the 2 nd capturing device 131 are provided on the joint carriage 9, the 1 st capturing device 107 and the 2 nd capturing device 131 need to be sequentially operated without contact. In contrast, in the present embodiment, since the first capture device 107 is only required to be operated after the arrival of the joint carriage 9, the time taken for the joint can be reduced.

In the spinning machine 1 of the present embodiment, the flow path cross-sectional area of the 1 st duct 95 is larger than the flow path cross-sectional area of the 2 nd duct 96.

Accordingly, since the flow path cross-sectional area of the 1 st duct 95 is relatively large, the pressure loss of the suction flow flowing through the 1 st duct 95 can be reduced.

The spinning machine 1 of the present embodiment includes a yarn splicing cart 9 that travels in the arrangement direction. The joint carriage 9 includes a 1 st catching device 107, a joint device 105, and a connection pipe 108. The connection pipe 108 connects the 1 st catching device 107 and the 1 st duct 95, and sends the yarn waste sucked by the 1 st catching device 107 to the 1 st duct 95. The 1 st pipe 95 is disposed in the 1 st space 121 below the joint carriage 9. The flow path sectional area of the 1 st pipe 95 is larger than that of the 2 nd pipe 96.

Since a structure for supporting the joint carriage 9 is required below the joint carriage 9, the 1 st space 121 can be easily formed to be relatively large. However, since this is an obstacle to the joint carriage 9, there are limited members that can be disposed in the 1 st space 121. Therefore, by disposing the 1 st duct 95 in the 1 st space 121, the 1 st space 121 can be effectively utilized. Further, since there are limited members that can be disposed in the 1 st space 121, the flow path cross-sectional area of the 1 st duct 95 is easily increased.

In the spinning machine 1 of the present embodiment, the flow passage cross-sectional area of the 1 st duct 95 is 1.2 times or more and 1.6 times or less the flow passage cross-sectional area of the 2 nd duct 96.

This enables the 1 st duct 95 to have a good size in terms of layout and pressure loss.

In the spinning machine 1 of the present embodiment, the fly waste generated in the yarn feeding portion flows through the fly waste duct 91, and the fly waste duct 91 is provided along the arrangement direction of the spinning units 7 at a position different from the 1 st duct 95 and the 2 nd duct 96. The cross-sectional flow area of the flying saucer 91 is 5 to 16 times larger than that of the 2 nd duct 96. Alternatively, the flow path cross-sectional area of the flying saucer 91 is 10 to 16 times that of the 2 nd duct 96.

Since the pressure loss of the suction flow flowing through the flying yarn duct 91 causes a reduction in the yarn quality, the pressure loss can be reduced by increasing the cross-sectional area of the flow path of the flying yarn duct 91 in this manner, thereby sufficiently suppressing the reduction in the yarn quality.

The spinning machine 1 of the present embodiment includes the yarn splicing cart 9 that travels in the arrangement direction, and the 2 nd duct 96 is disposed in the 2 nd space 122 that is above the yarn splicing cart 9 and is surrounded by the yarn splicing cart 9 and the yarn path when viewed in the arrangement direction.

Since a large number of members are arranged near the yarn path, it is difficult to secure a large space in the 2 nd space 122. Therefore, the feature of the 2 nd duct 96 that the flow path cross-sectional area is relatively small can be utilized, and the 2 nd duct 96 can be disposed in the 2 nd space 122.

In the spinning machine 1 of the present embodiment, the yarn feeding section includes the draft device 21 that drafts the sliver 35 and the spinning device 23 that generates the spun yarn 33. The fly waste generated in the yarn feeding section flows through the fly waste duct 91, and the fly waste duct 91 is provided along the arrangement direction of the spinning units 7 at a position different from the 1 st duct 95 and the 2 nd duct 96. The 2 nd duct 96 is disposed at a position surrounded by the yarn feeding portion and the flying duct 91 when viewed in the arrangement direction.

Accordingly, the feature of the 2 nd duct 96 that the flow path cross-sectional area is relatively small can be utilized, and the 2 nd duct 96 can be disposed in a space of a limited size surrounded by the yarn feeding portion and the flying duct 91.

The spinning machine 1 of the present embodiment includes a yarn splicing cart 9 that travels in the arrangement direction. The yarn splicing cart 9 includes an auxiliary catching device 109, and the auxiliary catching device 109 includes a suction port 117, and moves the suction port 117 so as to approach the package 34 to suck and catch the spun yarn 33 on the package 34 side. When the operation condition is satisfied, the auxiliary capturing device 109 operates in place of the 2 nd capturing device 29. The lint sucked by the auxiliary catching device 109 flows in the 1 st duct 95.

The spun yarn 33 may be stuck to the package 34, and therefore a strong suction flow may be required when the spun yarn 33 is sucked and captured from the package 34. In this regard, since the auxiliary catching device 109 is connected to the 1 st duct 95 having a large flow path cross-sectional area, a strong suction flow can be generated, and the yarn of the package 34 can be sucked and caught appropriately.

In the spinning machine 1 of the present embodiment, the yarn splicing cart 9 includes the auxiliary shutter 111, and the auxiliary shutter 111 switches between a state in which the auxiliary trap device 109 generates the suction flow and a state in which the suction flow is not generated by switching between opening and closing of the flow path from the auxiliary trap device 109 to the 1 st duct 95.

Thus, the flow path is closed by the auxiliary shutter 111 without using the auxiliary trap device 109, and thus consumption of the suction flow can be suppressed. Since the auxiliary capturing device 109 is used as an auxiliary, the frequency of the operation of the auxiliary capturing device 109 is lower than that of the 2 nd capturing device 29. Therefore, in the 1 st duct 95, the spun yarn 33 on the winding 34 side is wound around the spun yarn 33 on the yarn feeding portion side, and the possibility of yarn breakage is very low. Therefore, the necessity of providing a cutter for removing the winding of the spun yarn 33 is low, and the cutter can be omitted, so that the member cost can be reduced.

In the spinning machine 1 of the present embodiment, the distance from the suction port 73 of the 2 nd catching device 29 to the 2 nd duct 96 is shorter than the distance from the suction port 117 of the auxiliary catching device 109 to the 1 st duct 95.

This can reduce the loss of the attraction force of the 2 nd trap device 29 mainly used.

The spinning machine 1 of the present embodiment includes a yarn waste collection unit 97 that collects yarn waste generated in the spinning unit 7. The 1 st duct 95 and the 2 nd duct 96 are connected to a common yarn waste collecting section 97.

This can collect the yarn waste collecting portions 97 into one.

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

In the above embodiment, the yarn accumulating device 25 pulls out the spun yarn 33 from the spinning device 23, but a delivery roller that pinches and pulls out the spun yarn 33 by 2 opposing rollers may be provided instead of the yarn accumulating device 25. In this case, the yarn accumulating device 25 may be provided downstream of the delivery roller.

In the above embodiment, the 1 st catching device 107 is provided on the yarn splicing cart 9, but may be provided for each spinning unit 7.

In the above embodiment, the sub-blower 98 generates the suction flow in both the 1 st duct 95 and the 2 nd duct 96, but a blower for generating the suction flow in the 1 st duct 95 may be different from a blower for generating the suction flow in the 2 nd duct 96.

The present invention is not limited to the spinning machine, and can be applied to other yarn winding machines such as an automatic winder, for example. When the present invention is applied to an automatic winder, the yarn feeder is a portion where a yarn supplying bobbin is provided and the yarn is drawn out from the yarn supplying bobbin.

Claims

1. A yarn winding machine is characterized by comprising:

a plurality of winding units having a yarn supplying section for supplying a yarn and a winding device for winding the yarn to form a package;

a first catching device for attracting and catching the yarn on the yarn feeding portion side;

a 2 nd catching device for sucking and catching the yarn on the package side of the winding device;

a piecing device for piecing the yarn sucked and caught by the 1 st catching device and the yarn sucked and caught by the 2 nd catching device;

an attraction force generating unit that generates an attraction force used in the 1 st capturing device and the 2 nd capturing device;

a 1 st duct provided along an arrangement direction of the winding units and through which air sucked by the 1 st trap flows; and

and a 2 nd duct which is provided along the arrangement direction of the winding units at a position different from the 1 st duct and through which the air sucked by the 2 nd catching device flows.

2. Yarn winding machine according to claim 1,

the 2 nd catching device is provided for each winding unit, and has a suction port arranged to draw and catch the yarn on the package side toward a yarn path from the yarn feeding section to the winding device.

3. The yarn winding machine of claim 2,

the winding unit includes a drawing device for drawing the yarn from the yarn feeding portion,

the 2 nd catching device is disposed so as to face a position downstream of the drawing device and upstream of the winding device in the yarn path.

4. Yarn winding machine according to claim 2 or 3,

the pressure of the suction force generation unit is 3kPa or more and less than 6kPa.

5. Yarn winding machine according to claim 2 or 3,

the pressure of the suction force generation unit is 3.5kPa to 5 kPa.

6. Yarn winding machine according to one of the claims 2 to 5,

the yarn winding machine comprises a carriage traveling in the arrangement direction and having at least the 1 st catching device,

in a case where the carriage reaches the winding unit and stops in a state where the yarn on the package side is sucked and caught by the 2 nd catching device, the yarn on the yarn supply side is caught by the 1 st catching device as a next operation after the stop.

7. Yarn winder according to one of the claims 1 to 6,

the flow path cross-sectional area of the 1 st pipe is larger than that of the 2 nd pipe.

8. The yarn winding machine of claim 7,

the yarn winding machine includes a carriage that travels in the arrangement direction,

the above-mentioned platform truck has:

the 1 st catching device;

the above-described joint device; and

a connection pipe for connecting the 1 st catching device with the 1 st duct and sending the air sucked by the 1 st catching device to the 1 st duct,

the 1 st duct is disposed in the 1 st space below the carriage.

9. Yarn winding machine according to claim 7 or 8,

the flow path cross-sectional area of the 1 st pipe is 1.2 times to 1.6 times the flow path cross-sectional area of the 2 nd pipe.

10. Yarn winder according to one of the claims 7 to 9,

the fly generated in the yarn feeding section flows through a fly duct provided along the arrangement direction of the winding units and at a position different from the 1 st duct and the 2 nd duct,

the cross-sectional flow area of the flying saucer is 5 to 16 times larger than that of the 2 nd pipe.

11. The yarn winding machine of claim 10,

the cross-sectional flow area of the flying saucer is 10 to 16 times larger than that of the 2 nd pipe.

12. Yarn winding machine according to one of claims 7 to 11,

the 2 nd duct is disposed in a 2 nd space above the carriage and surrounded by the carriage and the yarn path when viewed along the arrangement direction.

13. Yarn winder according to one of the claims 7 to 12,

the yarn feeding section includes a drafting device for drafting a sliver and a spinning device for producing a spun yarn,

the 2 nd duct is disposed at a position surrounded by the yarn feeding portion and the flying duct when viewed along the arrangement direction.

14. Yarn winder according to one of the claims 7 to 13,

the carriage includes an auxiliary catching device having a suction port for sucking and catching the yarn on the package side by moving the suction port so as to approach the package,

when the auxiliary capturing device satisfies the operation condition, the auxiliary capturing device operates instead of the 2 nd capturing device,

the air sucked by the auxiliary capturing device flows through the 1 st duct.

15. The yarn winding machine of claim 14,

the carriage includes an auxiliary gate that switches between a state in which the auxiliary capturing device generates suction flow and a state in which the auxiliary capturing device does not generate suction flow by switching between opening and closing of a flow path from the auxiliary capturing device to the 1 st duct.

16. Yarn winder according to claim 14 or 15,

the distance from the suction port of the 2 nd catching device to the 2 nd pipe is shorter than the distance from the suction port of the auxiliary catching device to the 1 st pipe.

17. Yarn winding machine according to one of claims 1 to 16,

the yarn winding machine includes a yarn waste collection unit for collecting yarn waste generated in the winding unit,

the 1 st duct and the 2 nd duct are connected to the common yarn waste collecting unit.