JP2008202181A - Spinning machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent defects or the like of draft caused by drafting entangled rovings by preventing the entanglement of the rovings with each other when delivering the doubled rovings fed from one yarn-feeding bobbin to a draft device. <P>SOLUTION: The spinning machine equipped with a sliver guide for guiding the doubled rovings fed from the yarn-feeding bobbin to the draft device, and a creel guide present at the upstream side of the sliver guide and for guiding the doubled rovings in the yarn-delivering direction comprises a separate guide for separating the doubled rovings, and installed in the upstream side of the sliver guide and in the downstream side of the creel guide. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The sliver guide for guiding the two aligned coarse yarns supplied from the yarn feeding bobbin to the draft device, the creel guide for guiding the two aligned coarse yarns in the yarn conveying direction, and the two aligned coarse yarns are separated. And a spinning machine including the separate guide.

In general, in a ring spinning machine, a sliver is once spun by a roving machine to a thickness that can be spun by the spinning machine, and the spun roving is drafted (see Patent Document 1).
On the other hand, in the case of an air spinning machine, it is common to use a sliver produced by a drawing machine as the raw material supply form, but depending on the equipment specifications of the drawing machine, it is difficult to create a thin sliver (Factory), and in such a case, instead of a sliver, roving yarn may be supplied.

Japanese Utility Model Publication No. 6-20474

  As with cotton spinning, wool spinning may use roving as a raw material supply form, but the form of roving used in wool spinning is two rovings for one yarn feeding bobbin. Are generally arranged.

  In such a supply form, the two rovings are transported while being aligned, so that one roving may be entangled by being dragged by the transport of the other roving.

  The draft device is a device that sandwiches and extends a sliver or a coarse yarn between upper and lower draft rollers. For this reason, when two roving yarns in an entangled state pass through the sliver guide and are supplied to the draft device, a portion where the two roving yarns are entangled with each other and the two roving yarns are arranged in parallel on the left and right. There is a difference in the stretch ratio between the appropriate part and the part. In other words, uneven drawing occurs in the two rovings drawn by the drafting device, resulting in a draft failure. In particular, a high draft device that performs a draft process at a high speed or a device with a high draft ratio has a problem that nozzle clogging or yarn breakage occurs in the air spinning device in addition to the draft failure.

  The present invention has been made to solve such a problem, so that the roving yarns are not entangled when transporting the two aligned roving yarns supplied from one yarn feeding bobbin to the draft device, It is an object of the present invention to provide a spinning machine that prevents draft defects and the like caused by drafting entangled rovings.

In order to achieve the object, the spinning machine according to claim 1,
A sliver guide that guides the two aligned coarse yarns fed from the yarn feeding bobbin to the draft device;
A spinning machine provided on the upstream side of the sliver guide and including a creel guide for guiding the two aligned coarse yarns in a yarn conveying direction;
A separate guide installed on the upstream side of the sliver guide and on the downstream side of the creel guide;
It comprises.

With the above configuration, the following effects are obtained.
By passing the coarse yarn through the separate guide, the two aligned coarse yarns are separated and conveyed in the left-right direction with respect to the yarn conveyance direction. Therefore, it becomes difficult to reach the sliver guide in a state where the two rovings are tangled.

The spinning machine according to claim 2 is the spinning machine according to claim 1,
The separate guide is an arcuate guide portion.

  With the above configuration, the same effect as the spinning machine according to claim 1 is obtained.

The spinning machine according to claim 3 is the spinning machine according to claims 1 and 2,
A separate guide extends from the creel guide.

With the above configuration, the following effects are obtained.
A separate guide is located in the immediate vicinity of the creel guide. Then, the entanglement is released at a stage where the degree of entanglement between the roving yarns is small, and the roving yarns are separated and conveyed to the draft device.

  As effects of the present invention, the following effects can be obtained.

In the spinning machine according to claim 1,
When the roving yarn reaches the sliver guide, the roving yarn does not become entangled, and since it can pass through the sliver guide in that state, draft failure does not occur and nozzle clogging or yarn breakage in the air spinning device does not occur. Prevention becomes possible.

In the spinning machine according to claim 2,
The effect similar to that of the spinning machine according to claim 1 can be obtained, and the configuration of the separate guide can be simplified.

In the spinning machine according to claim 3,
The effect similar to that of the spinning machine according to claim 1 can be obtained, and the separate guide can be installed with a smaller number of parts than when the separate guide is installed alone.

  Hereinafter, a spinning machine 100 according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a side cross-sectional view of a spinning machine 100 according to an embodiment of the present invention, and FIG. 2 is an enlarged view of the vicinity of the roving supply unit 1 of the spinning machine 100 according to an embodiment of the present invention.

  As shown in FIG. 1, the spinning machine 100 includes a roving supply unit 1, a drafting device 2, a spinning device 3, a yarn feeding device 4, a yarn defect detecting device 5, and a winding device 6. To do.

  The roving supply unit 1 includes a yarn supplying bobbin 8 wound up with two rovings aligned, a creel guide 9 for guiding the roving 7 in the yarn conveying direction, and a separate guide for separating the two aligning rovings 7. 10 and a sliver guide 11 for guiding the roving yarn 7 to the draft device 2.

  As shown in FIG. 1, the yarn supplying bobbin 8 is installed in a state where one end of the yarn supplying bobbin 8 is suspended. The roving yarn 7 is pulled in the circumferential direction of the yarn supplying bobbin 8 and supplied to the draft device 2. The method for installing the yarn supplying bobbin 8 is not limited to the method shown in FIG. 1. The method for installing the yarn supplying bobbin 8 with both ends fixed, and the axial direction of the yarn supplying bobbin 8 are parallel to the ground. May be used (however, the roving yarn 7 is limited to one in which the roving yarn 7 is pulled in the circumferential direction of the yarn feeding bobbin 8).

  As shown in FIG. 2, the creel guide 9 includes fan-shaped members 12 and 12 and a holding member 13 that holds the fan-shaped members 12 and 12 at a predetermined interval, and is fixed to the apparatus frame 14. The apparatus frame 14 is a frame extending in the left-right direction of the spinning machine 100 (direction perpendicular to the paper surface of FIG. 1). The sector member 12 has a radius that does not get over the sector member 12 when the roving yarn 7 passes over the holding member 13 of the creel guide 9. The radius that cannot be overcome is a radius that varies depending on the yarn conveyance speed, the yarn thickness, the yarn weight, etc., and can be specified by trying to convey the coarse yarn 7 under actual use conditions. it can.

  The holding member 13 is a member that connects the left and right fan-shaped members 12 and 12 and has a smooth shape so that the roving yarn 7 can pass through the creel guide 9 without being caught. In addition, the creel guide 9 is not limited to the shape shown in FIG. 2, What is necessary is just the shape which can guide the roving yarn 7 to a fixed direction.

  As shown in FIG. 2, the separate guide 10 is an arc-shaped member, protrudes upward in the yarn conveying direction, and is provided on the downstream side of the creel guide 9 and on the upstream side of the sliver guide 11. Here, the yarn conveying direction means a direction in which the roving yarn 7 in a state in which the two yarns are aligned is conveyed. Between the creel guide 9 and the sliver guide 11, the roving yarn 7 is separated into two roving yarns 7a and 7b. During this period, the yarn conveying direction is an average of the conveying directions of the roving yarns 7a and 7b. Means the transport direction.

  The separate guide 10 is installed so as to be integrated with the creel guide 9 by extending from the sector-shaped members 12 and 12 of the creel guide 9 toward the front upper side. Here, at the installation position of the separate guide 10, the yarn conveyance direction is a direction from the rear upper side to the front lower side. And the separate guide 10 is provided toward the front upper direction from the fan-shaped members 12 and 12, and the extending direction of the separate guide 10 is made to become an upper direction also with respect to the yarn conveyance direction. The separate guide 10 is not limited to the arc shape shown in FIG. 2, and the two aligned coarse yarns 7 are conveyed by the yarn when the two aligned coarse yarns 7 pass through the separate guide 10. Any shape that can be separated in the left-right direction with respect to the direction may be used. In addition, the separate guide 10 is not limited to being installed integrally with the creel guide 9, and is independent of the creel guide 9 as long as it is downstream of the creel guide 9 and upstream of the sliver guide 11. May be installed.

  The protruding height of the separate guide 10 in the upward direction with respect to the yarn conveying direction may be such that the roving yarn 7 does not get over the separate guide 10 when passing through the separate guide 10. The height that does not get over is a height that varies depending on the yarn conveyance speed, the yarn thickness, the yarn weight, etc., and is specified by trying to carry the coarse yarn 7 under actual use conditions. be able to. The separate guide 10 is not limited to the arc-shaped bar member, and may be a protrusion or a protrusion member as long as it satisfies the above requirements.

  As shown in FIG. 2, the sliver guide 11 is a tapered cylindrical body, and an introduction port 15 is opened in a trumpet-shaped portion, and a delivery port 16 is opened in a tapered tip portion. The inner surface from the inlet 15 to the outlet 16 is connected by a smoothly continuous curved surface.

  As shown in FIG. 1, the draft device 2 includes four pairs of draft rollers that sandwich and stretch the roving yarn 7. The four pairs of draft rollers are composed of a back roller pair 21, a third roller pair 22, a second roller pair 23, and a front roller pair 24 arranged along the conveying direction of the roving yarn 7. Further, the second roller pair 23 is provided with an apron band 25 which is an endless belt made of leather or synthetic rubber.

  The spinning device 3 is a pneumatic spinning device that produces a spun yarn (bundled spun yarn) 31 by applying a swirling airflow to the roving yarn 7 drawn by the draft device 2.

  The yarn feeding device 4 is a device that feeds the spun yarn 31 manufactured by the spinning device 3 to the winding device 5, and includes a delivery roller 41 and a nip roller 42 that nip and feed the spun yarn 31.

  The yarn defect detection device 5 is a device for detecting a yarn defect of the spun yarn 31 being sent to the winding device 6, and the yarn defect portion is removed based on the yarn defect detection information in the yarn defect detection device 5. Thus, winding of the defective yarn around the package 61 is prevented. Further, the yarn defect detecting device 5 is connected to both ends of the spun yarn 31 that has been cut once for cutting the yarn defect portion in order to cut the yarn defect portion according to the detection of the yarn defect. A yarn joining device (not shown) is provided.

  The winding device 6 is a device that forms the package 61 by traversing and winding the spun yarn 31 manufactured by the spinning device 3 in the axial direction of the bobbin 62. The package 61 or the bobbin 62 is rotated by the driving force of the driving drum 63, and the spun yarn 31 is wound around the bobbin 62 to form the package 61.

Next, how the roving yarn 7 is conveyed in the roving supply unit 1 of the spinning machine 100 according to the embodiment of the present invention will be described.
FIG. 3 is a plan view of the roving supply unit 1 and the draft device 2 of the spinning machine 100 according to the embodiment of the present invention.

  The two rovings 7 wound around the yarn supplying bobbin 8 in an aligned manner are unwound from the circumferential direction of the yarn supplying bobbin 8 and conveyed to the creel guide 9. During this time, the two roving yarns 7 are conveyed in an aligned manner. However, if both roving yarns 7a and 7b are conveyed side by side without being separated, they are conveyed in an aligned manner due to vibration of the roving yarn being conveyed, contact between the roving yarns, etc. In some cases, the roving yarn 7 that has been entangled is conveyed. Further, as the installation interval between the yarn feeding bobbin 8 and the creel guide 9 increases, the degree of entanglement of the roving yarn 7 increases. Therefore, the installation interval between the yarn supplying bobbin 8 and the creel guide 9 should be narrow so that the degree of entanglement of the roving yarn 7 becomes small.

  The roving yarn 7 conveyed to the creel guide 9 is conveyed along the upper surface of the holding member 13 of the creel guide 9. At this time, the creasing guide 9 causes the posture of the coarse yarn 7 to enter the sliver guide 11 so that the yarn conveyance path in the draft device 2 and the yarn conveyance path to the sliver guide 11 are aligned in a side view. Be controlled. Further, the roving 7 is conveyed in a certain direction without falling off from the holding member 13 because the movement of the creel guide 9 in the left-right direction is restricted by the fan-shaped members 12 and 12 of the creel guide 9. .

  The roving yarn 7 that has passed through the creel guide 9 is separated by the separate guide 10 in two directions left and right with respect to the yarn conveying direction. At this time, as shown in FIG. 3, the roving yarn 7 a, which is one of the roving yarns 7, is conveyed along the outer surface of the end portion of the separate guide 10. The other coarse yarn 7b is conveyed along the outer surface of the other end of the separate guide 10 and is conveyed leftward with respect to the yarn conveyance direction.

  The rovings 7a and 7b that have passed through the separate guide 10 are conveyed to the sliver guide 11 without contacting each other. The roving yarns 7a and 7b are conveyed in a state of being separated from the introduction port 15 of the sliver guide 11, respectively. In this state, it is conveyed to the draft device 2 and drafted.

It is side surface sectional drawing about the spinning machine 100 which concerns on embodiment of this invention. It is an enlarged view near the roving supply unit 1 of the spinning machine 100 according to the embodiment of the present invention. 1 is a plan view of a roving supply unit 1 and a draft device 2 of a spinning machine 100 according to an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coarse yarn supply unit 7, 7a, 7b Coarse yarn 8 Yarn supply bobbin 9 Creel guide 10 Separate guide 11 Sliver guide 12 Fan-shaped member 13 Holding member 14 Device frame 15 Inlet 16 Outlet

Claims (3)

A sliver guide that guides the two aligned coarse yarns fed from the yarn feeding bobbin to the draft device;
A spinning machine provided on the upstream side of the sliver guide and including a creel guide for guiding the two aligned coarse yarns in a yarn conveying direction;
A spinning machine comprising: a separate guide installed on the upstream side of the sliver guide and on the downstream side of the creel guide for separating the two aligned coarse yarns.   The spinning machine according to claim 1, wherein the separate guide includes an arcuate guide portion.   The spinning machine according to claim 1 or 2, wherein the separate guide is extended to the creel guide.

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