JP2007008721A - Yarn delivery device and yarn piecing method using this device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To instantly piece yarn, by preventing winding of cut yarn on a winding roller, or the like. <P>SOLUTION: This yarn delivery device has the winding roller Rp winding the yarn Y1, a delivery roller Rk brought into pressure contact with the winding roller Rp and delivering the yarn at a specific speed, a bracket 2 for contacting and separating the winding roller Rp to the delivery roller Rk, an operation lever 3 rotatably holding the winding roller Rp in a separated state to the delivery roller Rk by interlocking with the bracket 2, and a stopper 4 stopping rotation of the delivery roller Rk by separating the winding roller Rp from the delivery roller Rk by driving of the bracket 2. When the yarn is cut, after stopping delivery by being allowed to abut on the stopper 4 by separating the winding roller Rp from the delivery roller Rk, the winding roller Rp is rotatably held, and the yarn Y1 can be drawn. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a yarn in which one yarn such as an elastic yarn and the other yarn such as an inelastic yarn are spun and the elastic yarn is coated with the inelastic yarn, or the elastic yarn and the inelastic yarn are mixed. The present invention relates to a yarn feeding device used in an apparatus for manufacturing the yarn and a yarn splicing method using the device.

  For example, when a non-elastic yarn is coated with an elastic yarn having an excellent elastic recovery function as a core yarn, when the elastic yarn is unwound from its package (winding roller), the yarn is pressed against the winding roller at a constant speed. In many cases, a yarn feeding device having a feeding roller for feeding is used. A yarn such as an elastic yarn fed out at a constant speed, that is, one yarn is combined with a yarn such as the other non-elastic yarn supplied through another conveyance path.

However, this also occurs in the case of non-elastic yarn, but in the case of yarn such as polyurethane elastic yarn, it is not smoothly released from the package (winding roller) but is wound around the package and wound up and supplied to the next process etc. Sometimes cut off along the way. For this reason, in order to prevent wrapping, a yarn pressing roller is provided, and the yarn pressing roller is displaceable between a position in contact with the elastic yarn passage area on the peripheral surface of the feeding roller and a position away from the elastic roller. An elastic yarn feeding device is disclosed that is brought into pressure contact with a feeding roller when the yarn is fed out and separated from the feeding roller when the elastic yarn feeding is stopped (Patent Document 1).
JP-A-5-162921

  By the way, in a yarn feeding device including a winding roller and a feeding roller, a yarn such as an elastic yarn is fed at a high speed, but when the yarn is cut, the cut yarn is wound around the winding roller or the like. On the other hand, it is ideal that yarns such as elastic yarns can be immediately spliced with other yarns when the yarn is broken. However, in Patent Document 1 described above, the elastic yarn is prevented from being wound around a winding roller or the like such as when the elastic yarn is being fed into the supplied portion with low tension, such as when the operation is resumed after piecing. When this occurs, the rotation of the winding roller is not stopped, and the yarn such as an elastic yarn is not immediately spliced with another yarn. For this reason, skill has been required for piecing, particularly elastic piecing.

  Further, Patent Document 1 requires a separate thread presser roller, and the winding roller is rotatably held by a rotatable arm, and the arm is driven through a cylinder as drive means. There is a problem that the number of parts increases due to the necessity of driving the arm to separate the winding roller from the feeding roller and the thread pressing roller.

  Accordingly, an object of the present invention is to prevent the cut yarn from being wound around a winding roller or the like when the yarn is cut during high-speed conveyance, and to enable instant splicing, and to simplify the structure. And a yarn splicing method using the device.

  A yarn feeding device according to a first aspect of the present invention includes a winding roller for winding a yarn such as an elastic yarn, a feeding roller that is pressed against the winding roller to feed the yarn at a constant speed, and a winding roller that feeds the winding roller. A bracket for bringing the roller into and out of contact with the roller, and an operation lever for holding the winding roller in a state of being separated from the feeding roller in association with the bracket, are provided.

  According to the present invention, since the operation lever for rotatably holding the winding roller in conjunction with the bracket is provided, when the yarn breakage occurs, the operation lever is operated to feed the winding roller. If it is held in a state of being free to rotate, the yarn can be pulled out, that is, the length necessary for the piecing can be pulled out by hand, and the piecing operation becomes easy.

  The yarn feeding device according to a second aspect of the present invention is configured such that the bracket is configured to be swingable around the rotation shaft and is separated from the feeding roller against the spring member. In addition, the operation lever is configured to be swingable forward and backward with a support shaft as a center, and has an engaging portion that engages with the rear side of the bracket.

  According to the present invention, the bracket can be operated by operating the operation lever, and there is no need to separate the operation by the bracket and the operation by the operation lever.

  According to a third aspect of the present invention, there is provided a yarn feeding device comprising a stopper for separating the winding roller from the feeding roller by driving the bracket to stop the rotation of the feeding roller, and the operation lever includes the winding roller. And the stopper is rotatably held.

  According to the present invention, when the yarn breakage occurs, the winding roller moves away from the feeding roller and comes into contact with the stopper to immediately stop the feeding of the yarn, and then the winding roller is moved by operating the operation lever. If the roller is held rotatably between the stopper and the stopper, the yarn can be prevented from being fed out after the yarn breakage, and the yarn can be quickly spliced from the winding roller and then spliced to the other yarn. .

  According to a fourth aspect of the present invention, there is provided a yarn splicing method using a yarn feeding device, a winding roller for winding a yarn such as an elastic yarn, and a feeding roller that is pressed against the winding roller to feed the yarn at a constant speed. A bracket for bringing the winding roller into and out of contact with the feeding roller, an operation lever for holding the winding roller in a separated state in conjunction with the bracket, and driving the bracket by driving the bracket. A stopper that stops the rotation of the feeding roller away from the feeding roller is provided, and when the yarn breakage occurs, the winding roller moves away from the feeding roller and comes into contact with the stopper to immediately stop the feeding of the yarn. The winding roller is held in a freely rotating manner between the feeding roller and the stopper, and in this state, the yarn is drawn from the winding roller to the other yarn. Characterized in that it follows.

  According to the present invention, when the yarn breakage occurs, the winding roller moves away from the feeding roller and comes into contact with the stopper to immediately stop the feeding of the yarn, so that the cut yarn is wound around the winding roller or the like. Will be prevented. Thereafter, the winding roller is brought into a state of being rotatably held between the feeding roller and the stopper, and in this state, the winding roller is fed to the other yarn while being pulled out from the winding roller. The winding roller can be rotatably held in the process of the contact / separation operation.

  In the yarn splicing method using the yarn feeding device according to claim 5 of the present invention, when yarn breakage occurs, after the winding lever is separated from the feeding roller and brought into contact with the stopper by the operation lever, In the process of bringing the winding roller into contact with the feeding roller, the winding roller is rotatably held between the feeding roller and the stopper.

  According to the present invention, when the yarn breakage occurs, the feeding of the yarn from the winding roller can be stopped immediately, and the winding roller and the stopper in the process of bringing the winding roller into contact with the feeding roller. The winding roller can be brought into contact with the feeding roller immediately after piecing.

  According to the yarn feeding device according to the present invention, when the yarn breakage occurs, the yarn can be fed and spliced by operating the operation lever to hold the winding roller rotatably. it can. Further, if the winding roller is rotatably held between the feeding roller and the stopper by the operation of the operation lever, the winding is prevented from being unwound by preventing the yarn from being fed after the yarn breakage occurs, and then quickly The yarn can be spliced with the other yarn while pulling the yarn from the winding roller.

  According to the yarn splicing method using the yarn feeding device according to the present invention, when the yarn breakage occurs, the winding roller moves away from the feeding roller and comes into contact with the stopper to immediately stop the yarn feeding. The cut yarn is prevented from being wound around the winding roller and the like, and then the winding roller is held rotatably between the feeding roller and the stopper, and the yarn is pulled out from the winding roller in this state. Since the yarn is spliced to the other yarn, the yarn can be spliced with the other yarn while the yarn is quickly pulled out from the winding roller while preventing the yarn from being fed out after the yarn breakage occurs.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In the present embodiment, the present invention is applied to an apparatus for manufacturing a coated elastic yarn or a mixed yarn of an elastic yarn and an inelastic yarn by interlacing an inelastic yarn with an elastic yarn as a core yarn, and FIG. Is a device BU that feeds out an elastic yarn as one yarn Y1 from the elastic yarn feeding device 1 and combines it with an inelastic yarn as the other yarn Y2 and simultaneously feeds it. As the elastic yarn, in addition to a polyretane-based elastic yarn, a polyether ester-based elastic yarn or the like is used. As the other yarn Y2, for example, an inelastic yarn, nylon, rayon, polyester, or the like is used. The one yarn Y1 and the other yarn Y2 are spliced at a predetermined position X by a yarn splicing device (also called an entangler: not shown) by air injection. The other yarn Y2 is wound around a bobbin V disposed on the lower side of the elastic yarn feeding device 1.

  As shown in FIG. 2, the feeding device 1 is arranged in a large number at a predetermined interval on the elastic yarn feeding device 1 (this unit is referred to as “weight”), and is provided at a position for each weight. It is attached to a fixed plate P1 on the upper side, a vertical fixed plate P2 disposed below the fixed plate P1, and the like. A feeding roller Rk is attached to the upper fixing plate P1, and a bracket 2 having a winding roller Rp attached to the lower fixing plate P1 is attached to the vertical fixing plate P2. The feeding roller Rk is driven by a motor M disposed on the lower side of the elastic yarn feeding device 1. The winding roller Rp has a cylindrical package Pg on the outer periphery, and one thread Y1 such as an elastic thread is wound around the cylindrical package Pg.

  The bracket 2 has a rotating shaft 2j attached to the fixed plate P2 at a substantially central position in the longitudinal direction, and is disposed in the vicinity thereof and driven by the cylinder S. As for the connection between the bracket 2 and the cylinder S, the rod Sr of the cylinder S and the vicinity of the rotating shaft 2j are connected by a connecting member 5. In addition, a winding roller Rp around which the elastic yarn Y1 is wound is rotatably supported in the middle portion of the bracket 2 in the longitudinal direction, and the tip side is a grip portion 2t for operating the bracket 2 by hand. . The rotating shaft 2j and the fixed plate P2 are connected by a spring member B1. Therefore, the bracket 2 is configured to be swingable around the rotation shaft 2j, and the winding roller Rp is separated from the feeding roller Rk against the spring member B1 by the cylinder S which is driving means. be able to. A notch 2z that engages with the engaging portion 3z of the operation lever 3 is formed on the other end proximal end side of the bracket 2.

  The operation lever 3 has a dogleg shape and is configured to be swingable around the support shaft 3j on the fixed plate P2. The operation lever 3 is disposed at a lower position of the bracket 2, and one longitudinal end side of the operation lever 3 is a grip portion 3 t that is gripped by hand, and the other end base end side is engaged with the rear side 2 z of the bracket 2. 3z. The locking portion 3z is formed such that the other end proximal end side of the operation lever 3 is formed in an arc shape so that the contact portion with the notch portion 2z of the bracket 2 is gradually changed. Accordingly, when the grip portion 3t of the operation lever 3 is gripped and operated by hand, the bracket 2 can be swung within a predetermined range via the locking portion 3z. Further, the bracket 2 can be operated by operating the operation lever 3, and there is an advantage that the operation by the bracket 2 and the operation by the operation lever 3 do not need to be separately performed. In this respect, the apparatus is simplified. The number of parts is smaller than that of the conventional example.

  If the operation lever 3 is not provided, the winding roller Rp contacts and separates from the feeding roller Rk only by operating the bracket 2 via the cylinder S. That is, the detection means 8 detects that the yarn breakage has occurred, and the control means transmits this to the cylinder S, and the winding roller Rp contacts and separates from the feeding roller Rk only by operating the bracket 2.

  The stopper 4 is formed by forming a wire-like member by bending the distal end side 4a in an arc shape and bending the rear side 4b attached to the fixed plate P2 in a U shape, and is attached to the fixed plate P2. ing. The stopper 4 abuts on the outer periphery of the winding roller Rp at its arcuate tip 4a and functions as a stopper for stopping the rotation of the winding roller Rp.

  Therefore, in the yarn feeding device 1 according to the present embodiment, as shown in FIGS. 1, 2 and 3A, one yarn Y such as an elastic yarn from the winding roller Rp is fixed by the feeding roller Rk. The yarn is fed at a speed, entangled with the other yarn Y2 at a predetermined position X (combined yarn), and conveyed. In addition, the speed at the time of threading is a high-speed conveyance at 500 m / min or more.

  When a yarn breakage occurs (also called a missing weight, which occurs for each of a number of weights), that is, when an elastic yarn that is one yarn Y1 of the spinning unit BU comes off from the other yarn Y2, this yarn breakage. Is detected by the detecting device 8, and the control means operates the cylinder S to stop the feeding of the elastic yarn Y1 (FIG. 3B). That is, the winding roller Rp is separated from the feeding roller Rk and is brought into contact with the tip end side 4a of the stopper 4 to immediately stop the feeding of the yarn Y1. Accordingly, it is possible to prevent a situation where one yarn Y1 is wound around the winding roller Rp and the like, and a situation where one yarn Y1 is damaged. In this stopped state, since the winding roller Rp is in contact with the stopper 4, the yarn Y1 is not paid out from the winding roller rp. In this stop state, the locking portion 3z of the operation lever 3 is disengaged from the notch portion 2z of the bracket (FIG. 3B).

  Next, it is necessary to splice one broken yarn Y1 to the other yarn Y2, but when the gripping portion 3t of the operating lever 3 is gripped by hand and the operating lever 3 is operated upward, the operating lever 3 The grip portion 3t contacts the grip portion 2t of the bracket 2 to lift the bracket 2 upward, and the operation lever 3 rotates about the support shaft 3j, so that the locking portion 3z of the operation lever 3 rotates. The bracket 2 is engaged with the notch 2z of the bracket 2 (FIG. 3C). Thereby, the winding roller Rp is separated from the feeding roller Rk, that is, the winding roller Rp is held rotatably between the feeding roller Rk and the stopper 4. Therefore, when the elastic yarn Y1 and the other yarn Y2 are spliced by a splicing device or the like, the winding roller Rp is turned by hand to pull out an appropriate length necessary for the splicing, and the other yarn Y2. Can be spliced. For this reason, it is possible to thread (join) the yarn even during high-speed conveyance, and skill is not required as in the prior art.

  Here, in order to smoothly interlock the operation lever 3 and the bracket 2 so as to exert an elastic force, for example, as shown in FIG. 4, a predetermined portion of the operation lever 3 and the fixed plate P2 are connected by a spring member B2. It is also preferable to connect the predetermined positions of the operation lever 3 and the bracket 2 with the spring member B2. Further, in the present embodiment, the bracket 2 is held in a slightly oblique posture, but the bracket 2 may be held in a horizontal posture so that the bracket 2 can be easily operated by the cutout state of the cutout portion 2z of the bracket 2. Is possible.

  When the yarn splicing is completed, when the operation lever 3 is further moved upward, the locking portion 3z of the operation lever 3 is disengaged from the notch portion 2 of the bracket 2, and the winding roller Rp and the feeding roller Rk are operated by the spring member B1. Contact (FIG. 3A). Accordingly, the elastic yarn Y1 from the winding roller Rp is brought into pressure contact with the winding roller Rk, and the yarn Y1 is fed out at a constant speed.

  As described above, the present embodiment has been described by taking the example of a feeding device for feeding out elastic yarns, but the present invention can be widely applied to all yarn feeding devices. Further, in the present embodiment, when the yarn breakage occurs, it is immediately brought into contact with the stopper 4, and then the winding roller Rp is rotatably held in a state separated from the feeding roller Rk. 3B, the rear winding roller Rp is rotatably held in a state of being separated from the feeding roller Rk by the operation of the grip portion 2t of the bracket 2 and the grip portion 3t of the operation lever 3. It is also possible to do it immediately.

1 is a side view showing a yarn feeding device according to an embodiment of the present invention. It is a perspective view which shows the thread | yarn delivery apparatus of the said embodiment. It is a figure explaining the order of operation | movement of the thread | yarn feeding apparatus of the said embodiment. It is a figure explaining the connection state of the operation lever of the said embodiment.

Explanation of symbols

1 Yarn feeding device,
2 Bracket, 2j Rotating shaft, 2t Grip part, 2z Notch part,
3 operation lever, 3j support shaft, 3t gripping part, 3z locking part,
4 Stopper,
5 connecting members,
Y1 One thread (elastic thread),
Y2 The other thread (inelastic thread),
S cylinder, Sr rod,

Claims (5)

  A winding roller for winding a yarn such as an elastic yarn, a feeding roller that is pressed against the winding roller and feeds the yarn at a constant speed, a bracket for bringing the winding roller into and out of contact with the feeding roller, and a bracket, A yarn feeding device comprising: an operating lever for interlockingly holding the winding roller so as to be rotatable in a state of being separated from the feeding roller.   The bracket is configured to be swingable forward and backward about a rotation shaft, and the operation lever is configured to be swingable forward and backward about a support shaft and is engaged with a rear side of the bracket. The yarn feeding device according to claim 1, further comprising a stop portion.   A stopper is provided to stop the rotation of the feeding roller by separating the winding roller from the feeding roller by driving the bracket, and the operation lever holds the winding roller rotatably between the feeding roller and the stopper. The yarn feeding device according to claim 1.   A winding roller for winding a yarn such as an elastic yarn, a feeding roller that is pressed against the winding roller and feeds the yarn at a constant speed, a bracket for bringing the winding roller into and out of contact with the feeding roller, and a bracket, An operating lever for interlockingly rotating the winding roller away from the feeding roller and a stopper for stopping the rotation of the feeding roller by separating the winding roller from the feeding roller by driving the bracket. When the yarn breakage occurs, the winding roller moves away from the feeding roller and comes into contact with the stopper to immediately stop the feeding of the yarn, and then the winding roller is freely rotatable between the feeding roller and the stopper. A yarn feeding device characterized in that the yarn is spliced to the other yarn while the yarn is pulled out from the winding roller in this state. Piecing method was used. When yarn breakage occurs, the winding roller is moved away from the feeding roller by the operation lever and brought into contact with the stopper, and then the winding roller is brought into contact with the feeding roller and the winding roller is moved to the feeding roller and the stopper. The yarn splicing method using the yarn feeding device according to claim 4, wherein the yarn splicing device is held rotatably.

Images