JP3838354B2 - Core yarn splicing method and seam, and automatic winder equipped with core yarn splicing device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a core yarn piecing method, a core yarn seam formed by the piecing method, and an automatic winder equipped with a core yarn piecing device that embodies the piecing method.
[0002]
[Prior art]
The core yarn is, for example, an elastic yarn such as spandex (polyurethane fiber) as an inner layer fiber (hereinafter referred to as core yarn), and a shrink-proof yarn such as wool fiber or cotton fiber as an outer layer fiber (hereinafter referred to as cover yarn). It has a natural fiber texture while having spandex elasticity. As a method for splicing the core yarn, a method described later is known as a practical method.
[0003]
First, there is a knot method that mechanically connects the ends of two core yarns separated by cutting. According to this method, the strength of the knot is high and it can be applied to a core yarn having a relatively large count. However, since the joint of the jointed core yarn becomes a hump-like protruding state, when used for woven fabrics and knitting, this knot-like shape is used. There is a problem that the protrusion must be pushed into the back of the fabric.
[0004]
Next, after twisting the ends of the two separated core yarns with compressed air, the core yarn ends are overlapped, and further compressed air is applied to instantly splice the two core yarns. There is. According to this method, the seam does not protrude like the knot method, but the core yarn is not connected, and the elasticity of the splice portion is lost. Further, the end of the core yarn sometimes jumps out of the cover yarn, which is a yarn defect.
[0005]
[Problems to be solved by the invention]
Therefore, the present invention is capable of joining both the core yarn and the cover yarn, and is formed by the yarn joining method of the core yarn that can maintain the stretchability also at the joint portion, and this yarn joining method. An automatic winder including a seam of a core yarn and a yarn splicing device embodying the yarn splicing method is provided.
[0006]
[Means for Solving the Problems]
The core yarn splicing method according to the present invention is a core yarn composed of an inner layer fiber made of stretch yarn and an outer layer fiber made of shrink-proof yarn, and the outer layer fiber is unwound by applying compressed air to the two core yarns. The core yarns formed by the twisting are cut and twisted, but the ends of the core yarns are butted together. After the adhesive is applied to the butted parts, the adhesive is cured.
[0007]
Preferably, the adhesive is photocurable which is cured by light irradiation. The light may be an ultraviolet ray, and the light may be a laser beam.
[0008]
The seam of the core yarn according to the present invention is a core yarn composed of an inner layer fiber made of stretch yarn and an outer layer fiber made of shrink-proof yarn, the end portions of the two core yarns are butted together, and the butted portion is bonded with an adhesive The inner layer fiber and the outer layer fiber are substantially continuous at the bonded portion.
[0009]
An automatic winder equipped with a yarn splicing device for a core yarn according to the present invention is a core yarn composed of an inner layer fiber made of stretch yarn and an outer layer fiber made of shrink-proof yarn, and the compressed yarn is applied to the two core yarns by applying compressed air to the core winder. Core yarn splicing device that unwinds and cuts the outer layer fibers, butts the ends of the core yarns formed by this cutting, applies an adhesive to the abutted part, and then cures the adhesive to join It is characterized by having mounted.
[0010]
In a preferred embodiment, the yarn splicing device for the core yarn is configured to form a pair of clamp members that are movable relative to each other, and an end portion of the core yarn that each of the clamp members grips. A pair of first cutter members, a pair of air nozzles for supplying compressed air to the ends of the core yarn, and the ends of the core yarn are brought into contact with each other by bringing the clamp members closer to each other. A pair of second cutter members to be further cut, a resin supply means for applying an adhesive made of a photo-curing resin to the butted portion, and a light irradiation means for curing the applied photo-curing resin. It is characterized by that. The light irradiating means may be made of a semiconductor laser.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
DETAILED DESCRIPTION OF THE INVENTION Details of a core yarn splicing method according to the present invention, a core yarn seam formed by this splicing method, and an automatic winder equipped with a core yarn splicing device that embodies this splicing method will be described in detail with reference to the accompanying drawings. Explained.
[0012]
First, the yarn splicing method of the core yarn will be described with reference to FIGS. 1 and 2 are explanatory views of the yarn splicing method. In FIG. 1A, each of a pair of core yarns 1A and 1B to be joined is gripped by clamps 30 and 31 that can be freely opened and closed, and compressed air is supplied in the axial direction of each of the core yarns 1A and 1B by a pair of air nozzles 50 and 51. give. In that case, compressed air is given toward the direction of the 1st cutters 40 and 41 mentioned later (direction of the arrow shown in a figure). Subsequently, in FIG. 1B, the end of each core yarn 1A, 1B is cut by moving the pair of first cutters 40, 41 by moving each core yarn 1A, 1B in a direction perpendicular to the axial direction while supplying compressed air. Forming part. Subsequently, in FIG. 1C, the operation of the air nozzles 50 and 51 is stopped, and at the same time, the pair of second cutters 60 and 61 located near the clamps 30 and 31 are moved in a direction perpendicular to the axial direction of the core yarns 1A and 1B. By cutting, the core yarn end faces 1a and 1b are formed on the core yarns 1A and 1B.
[0013]
Further, in FIG. 2A, the core yarn end faces 1a and 1b are impregnated with the adhesive 2 made of an ultraviolet curable resin, and in FIG. 2B, the clamps 30 and 31 are moved so that the core yarn end faces 1a and 1b are brought into contact with each other. As a result, the adhesive 2 impregnated in each core yarn end face 1a, 1b is integrated by surface tension, and in FIG. 2C, ultraviolet rays are irradiated from the ultraviolet lamp 70 in a state where the core yarn end faces 1a, 1b are butted together. Then, the adhesive 2 is cured to form a seam. After the seam is formed, the clamps 30 and 31 are opened, and the core yarn is fed by a driving device (not shown).
[0014]
As shown in FIG. 2B, the adhesive 2 may be applied in a state where the core yarn end faces 1a and 1b are in contact with each other and are applied to the contacted portions. Further, in conjunction with the operation of the second cutters 60 and 61 in FIG. 1C, the adhesive 2 may be applied to the core yarn end faces 1a and 1b during or immediately after the cutting.
[0015]
When the adhesive 2 made of a thermosetting resin is applied, a halogen lamp that radiates heat rays is used instead of the ultraviolet lamp 70, or a pair of heats with semicircular grooves formed on the inner surface. The thermosetting resin may be cured by pressing the plate. When the adhesive 2 made of a photocurable resin is used, a semiconductor laser may be used instead of the ultraviolet lamp 70, and the adhesive may be cured by applying a laser beam to the butted portion.
[0016]
Further, the above-described yarn splicing method will be described in detail with reference to FIG. FIG. 3 corresponds to FIG. 1 and shows an enlarged view of the core yarn 1A. FIG. 3A corresponds to FIG. 1A. In this state, the cover yarn 11a, which is the outer layer of the core yarn 10a, is wound at a constant distance L1. 3B1 and B2 correspond to FIG. 1B. FIG. 3B1 shows a state before applying compressed air, FIG. 3B2 shows a state after supplied compressed air, and as shown in FIG. When the core yarn 1A is cut by the first cutter 40 in a state where no tension is applied, the winding interval of the cover yarn 11a is reduced to the distance L2 accompanying the shrinkage of the core yarn 10a, and further, as shown in FIG. By applying the compressed air toward the direction, the winding interval of the cover yarn 11a returns to the state of the distance L1 shown in FIG. 3A. 3C corresponds to FIG. 1C. By cutting the core yarn 1A with the second cutter 60, the core yarn end surface 1a can be formed in a state where the winding interval of the cover yarn 11a is the distance L1.
[0017]
Next, the seam of the core yarn formed by the above-described yarn splicing method will be described with reference to FIG. FIG. 4 is an explanatory diagram of the seam of the core yarn. The bonded core yarns 1 </ b> A and 1 </ b> B are abutted without overlapping the core yarn end faces 1 a and 1 b, and are strongly bonded by the adhesive 2. The core yarn end faces 1a and 1b are abutted in a cut state, and the twists of the cover yarns 11a and 11b in the core yarns 1A and 1B are substantially continuous.
[0018]
Furthermore, an automatic winder equipped with a yarn splicing device for a core yarn that embodies the above-described yarn splicing method will be described with reference to FIGS. FIGS. 5 to 8 are side views of the automatic winder, and FIGS. 9 to 16 are front views of the yarn splicing device for the core yarn provided in the automatic winder, and operations when joining two core yarns. It is explanatory drawing.
[0019]
The automatic winder shown in FIG. 5 includes a yarn splicing device for core yarn (hereinafter referred to as a yarn splicing device) 101 in the center, a yarn feeding bobbin B below, and a winding package P above. The core yarn YP supplied from the yarn supplying bobbin B is wound up on the rotating winding package P. The core yarn YP fed from the yarn feeding bobbin B is passed through the guide G, the tensioner T applies an appropriate tension to the core yarn YP, and passes through the rotating traverse drum D, whereby the core yarn YP having a predetermined thickness is wound on the winding package P. Wind up YP. And the thickness of the core yarn YP which the detection apparatus F passes is always detected so that the core yarn which has a fault part in this winding package P may not be wound.
[0020]
5, in FIG. 6, when the winding package P is winding the core yarn YP fed from the yarn feeding bobbin B, the detecting device F compares the preset core yarn diameter with the core yarn passing therethrough. Detect yarn defects of YP. When the detecting device F detects a yarn defect, the cutter (not shown) provided in the detecting device F cuts the core yarn YP and at the same time the rotation of the winding package P is stopped, and the winding is temporarily stopped. Therefore, the upper yarn Y1 is wound around the package P, and the lower yarn Y2 is sucked into the yarn suction port (yarn trap) W on the upper side of the guide G.
[0021]
7, in FIG. 7, the upper yarn suction arm S <b> 1 pivots clockwise about the upper shaft D <b> 1 and the lower yarn suction arm S <b> 2 rotates counterclockwise about the lower shaft D <b> 2. Turn to. Each suction arm S1, S2 is hollow and connected to the intake duct KP. The suction ports S1a and S2a of the suction arms S1 and S2 suck and hold the upper yarn Y1 and the lower yarn Y2 by the intake air of the intake duct KP.
[0022]
Continuing from FIG. 7, in FIG. 8, with the suction arms S1 and S2 gripping the upper yarn Y1 and the lower yarn Y2, the upper yarn suction arm S1 is rotated counterclockwise around the upper axis D1. Lowering and rotating the lower yarn suction arm S2 clockwise about the lower axis D2 causes the upper yarn Y1 and the lower yarn Y2 to reach predetermined positions via the front surface of the yarn splicing device 101. Guided.
[0023]
Next, description will be given of the case where the yarn splicing device 101 joins the upper yarn Y1 and the lower yarn Y2. FIG. 9 shows the front surface of the yarn splicing device 101. The machine base 101A is provided with an upper yarn clamping member 110 and a lower yarn clamping member 111, and each of the clamping members 110, 111 is a first clamper. 110a, 111a and second clampers 110b, 111b. These 110a, 111a, 110b, and 111b are normally separated, and the upper yarn suction arm S1 guides the upper yarn Y1 between the clampers 110a and 110b of the upper yarn clamp member 110, and the lower yarn suction arm S2 The lower yarn Y2 is guided between the clampers 111a and 111b of the lower yarn clamping member 111.
[0024]
Following FIG. 9, in FIG. 10, the first yarn Y1 and the lower yarn Y2 are positioned between the clampers 110a, 110b, 111a, 111b of the clamp members 110, 111 (state of FIG. 9). The clampers 110a and 111a move, and the plate surfaces of the respective clampers 110a and 111a come into contact with the plate surfaces of the respective second clampers 110b and 111b to grip the upper yarn Y1 and the lower yarn Y2.
[0025]
11, in FIG. 11, the upper yarn first cutter member 220 is disposed below the yarn splicing device 101, and the lower yarn first cutter member 221 is disposed above the yarn splicing device 101. Both consist of fixed blades 220a and 221a and movable blades 220b and 221b. And by the movement of each movable blade 220b, 221b, the 1st cutter member 220 for upper yarn cuts the upper yarn Y1, and the 1st cutter member 221 for lower yarn cuts the lower yarn Y2. Further, an upper yarn air nozzle 230 and a lower yarn air nozzle 231 are positioned between the clamp members 110 and 111 and the first cutter members 220 and 221, respectively. At the same time, the air nozzles 230 and 231 supply compressed air to the upper yarn Y1 and the lower yarn Y2. At that time, the direction in which the compressed air is applied is directed to each of the first cutter members 220 and 221.
[0026]
As shown in FIG. 12, between the clamp members 110, 111, the upper yarn second cutter member 120 is in a position close to the upper yarn clamp member 110, and in a position close to the lower yarn clamp member 111. A lower yarn second cutter member 121 is disposed. Each of the second cutter members 120, 121 is composed of fixed blades 120a, 121a and movable blades 120b, 121b, and the second cutter member 120 for upper yarn becomes the upper yarn Y1 by the movement of the movable blades 120b, 121b. The lower yarn second cutter member 121 cuts the lower yarn Y2. At that time, the upper yarn Y1 and the lower yarn Y2 that are not gripped by the clamp members 110 and 111 are sucked by the suction arms S1 and S2, and the yarns Y1 and Y2 having the defective portions are discarded in the intake pipe KP. The
[0027]
Following FIG. 12, in FIG. 13, the clamp members 110 and 111 holding the upper yarn Y <b> 1 and the lower yarn Y <b> 2 approach each other, and the cut end surfaces of the upper yarn Y <b> 1 and the lower yarn Y <b> 2 face each other.
[0028]
Continuing to FIG. 13, in FIG. 14, the supply port 131 of the resin supply means 130 approaches the butted portion in a state where the cut end surfaces of the upper yarn Y <b> 1 and the lower yarn Y <b> 2 are abutted (state of FIG. 13). A photo-curing resin is applied from the mouth 131. The resin supply means 130 is a syringe-like container and includes a main body 132, a supply port 131, and a cylinder 133. The main body 132 is attached to a pedestal CA that can freely move back and forth, and contains a photo-curing resin therein. Then, in the state where the cut end surfaces of the upper yarn Y1 and the lower yarn Y2 are abutted, the pedestal CA advances, and at the same time, the shielding means 150 described later moves upward and opens the supply port 131 of the resin supply means 130. Then, the supply port 131 of the resin supply means 130 is close to the abutting portion of the upper yarn Y1 and the lower yarn Y2, and the cylinder 133 is operated to discharge a predetermined amount of the photo-curing resin inside the main body 132. Apply cured resin.
[0029]
Following FIG. 14, in FIG. 15, the light irradiating means 140 irradiates the photocurable resin with the light irradiating means 140 in a state where the photocured resin is applied to the abutting portions of the upper yarn Y <b> 1 and the lower yarn Y <b> 2. It hardens | cures and joins the upper yarn Y1 and the lower yarn Y2. In this embodiment, the light curable resin is an ultraviolet curable resin, and the light irradiation means 140 irradiates ultraviolet rays. During irradiation, the pedestal CA moves back to the original position, the supply port 131 moves away from the abutting portion of the upper yarn Y1 and the lower yarn Y2, and at the same time, the shielding means 150 also returns to the original position. Therefore, the plate portion 151 of the shielding means 150 Shields the supply port 131. Thereby, the curing of the photocurable resin at the supply port 131 can be prevented, and the supply port 131 is prevented from being blocked. Further, by providing a heater (not shown) near the resin supply means 130, the viscosity of the photo-curing resin in the resin supply means 130 can be adjusted, and the viscosity is suitable for the yarn count of the core yarn to be spliced. be able to.
[0030]
Further, in this embodiment, an upper yarn detecting means 160 is arranged in the vicinity of the upper yarn clamping member 110, and a lower yarn detecting means 161 is arranged in the vicinity of the lower yarn clamping member 111, and 160 and 161 are respectively shown in FIG. Operates in a state. The upper yarn detecting means 160 detects the upper yarn Y1, and the lower yarn detecting means 161 detects the lower yarn Y2. The detecting means 160, 161 did not detect the upper yarn Y1 and the lower yarn Y2. In this case, that is, when each of the clamp members 110 and 111 fails to grip the upper yarn Y1 and the lower yarn Y2, the operation after FIG. 11 is stopped to prevent wasteful supply of the photo-curing resin or dripping of the liquid. . Then, the operation from FIG. 6 is performed again, and this operation is repeated until the piecing succeeds. When the yarn joining is successful, that is, when each of the detection means 160 and 161 detects the upper yarn Y1 and the lower yarn Y2, and performs the operation up to FIG. 15, the winding package P rotates again, Since the core yarn YP from the yarn feeding bobbin B is wound up, the core yarn YP having no defect portion can be wound up at all times.
[0031]
Next, a second embodiment different from the first embodiment will be described. The description of the same parts as those in the first embodiment is omitted. FIG. 16 is a view showing a yarn splicing device different from that of the first embodiment, and corresponds to FIG. 15 of the first embodiment. The light irradiating means 140 of the first embodiment emits diffusing light such as a halogen lamp to cure the photo-curing resin. In the second embodiment, the light irradiating means 140 has a lens attached to the semiconductor laser diode. In the semiconductor laser 140 ′, light emitted from the semiconductor laser diode is condensed by a lens to emit a laser 141, and the laser 141 is applied to the abutting portion of the upper yarn Y1 and the lower yarn Y2, thereby curing the photocurable resin. The wavelength range of the semiconductor laser 140 ′ is preferably 400 to 420 nm, and is, for example, a blue or violet semiconductor laser manufactured by Nichia Corporation.
[0032]
FIG. 16 shows a state in which a photo-curing resin is applied to the butt portion of each yarn Y1, Y2 (the state shown in FIG. 14), and a laser 141 emitted from the semiconductor laser 140 ′ is applied to the butt portion to cure the photo-curing resin. Thus, the yarns Y1 and Y2 are joined. Since the semiconductor laser 140 ′ has a compact shape, the entire yarn splicing device 101 can be reduced in size, and power consumption is lower than the amount of light, so that it is excellent in economic efficiency. Furthermore, since light diffuses in the light curing means 140 of the first embodiment, when the light curable resin adheres to each yarn Y1, Y2 and each clamp member 110, 111, the splicing failed. In the second embodiment, since the laser 141 is irradiated to the butted portion at a pinpoint, even if a photo-curing resin adheres to each yarn Y1, Y2 and each clamp member 110, 111, each yarn Y1, Y2 and each yarn Since the laser 141 does not hit the resin adhering portion with the clamp members 110 and 111, each does not adhere and the splicing does not fail. Furthermore, by irradiating at a pinpoint, the curability is higher than in the first embodiment, and the photo-curing resin is instantly cured, so that the working speed is increased and the life of the light irradiation means 140 is extended. There are also advantages. Further, in this embodiment, since the semiconductor laser 140 'is irradiated to the joint portion of each yarn Y1, Y2 at a pinpoint, it is not necessary to provide the shielding means 150 as in the first embodiment, and the whole is simplified. be able to.
[0033]
【The invention's effect】
In the present invention, as described above, when two core yarns are joined by the bonding method, both the core yarn and the cover yarn can be joined. Two core yarns can be inherited while maintaining Furthermore, because of the bonding method, the seam portion is not in a protruding state, and the seam portion can be shortened and made small, so that the discoloration portion at the time of dyeing is short, and it has the advantage that it is less noticeable.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a method for splicing a core yarn.
FIG. 2 is an explanatory diagram following FIG. 1;
FIG. 3 is a detailed explanatory view corresponding to FIG. 1;
FIG. 4 is an explanatory diagram of a seam of a core yarn.
FIG. 5 is an explanatory diagram of a yarn splicing operation procedure of an automatic winder equipped with a core yarn splicing device.
6 shows an explanatory diagram following FIG. 5. FIG.
FIG. 7 shows an explanatory diagram following FIG. 6;
FIG. 8 is an explanatory diagram following FIG. 7;
FIG. 9 is an explanatory diagram of a yarn joining operation procedure of the core yarn joining device.
FIG. 10 is an explanatory diagram following FIG. 9;
FIG. 11 is an explanatory diagram following FIG. 10;
FIG. 12 is an explanatory diagram following FIG. 11;
FIG. 13 is an explanatory diagram following FIG. 12;
FIG. 14 is an explanatory diagram following FIG. 13;
FIG. 15 is an explanatory diagram following FIG. 14;
FIG. 16 is an explanatory view of a second embodiment of the yarn splicing device for core yarn corresponding to FIG. 15;
[Explanation of symbols]
1A, 1B Core yarn 1a, 1b Core yarn end face 10a Core yarn (inner layer fiber)
11a Cover yarn (outer layer fiber)
2 Adhesive 101 Yarn splicing device for core yarn 110 Upper yarn clamping member 111 Lower yarn clamping member 220 Upper yarn first cutter member 221 Lower yarn first cutter member 120 Upper yarn second cutter member 121 Lower yarn first 2 Cutter member 230 Upper yarn air nozzle 231 Lower yarn air nozzle 130 Resin supply means 140 Light irradiation means 140 'Semiconductor laser

Claims (8)

A core yarn composed of an inner layer fiber made of stretch yarn and an outer layer fiber made of shrink-proof yarn, which is formed by untwisting and cutting the outer layer fiber by supplying compressed air to the two core yarns. A core yarn splicing method characterized in that the ends of the core yarns are butted together, an adhesive is applied to the butted portions, and then the adhesive is cured. The core yarn splicing method according to claim 1, wherein the adhesive is light curable by curing with light. The core yarn splicing method according to claim 2, wherein the light is ultraviolet rays. The core yarn splicing method according to claim 2, wherein the light is a laser beam. A core yarn composed of an inner layer fiber made of stretch yarn and an outer layer fiber made of shrink-proof yarn, the ends of the two core yarns are butted together, and the butted portion is joined by an adhesive, A core yarn seam, characterized in that an inner layer fiber and the outer layer fiber are substantially continuous. A core yarn composed of an inner layer fiber made of stretch yarn and an outer layer fiber made of shrink-proof yarn, which is formed by untwisting and cutting the outer layer fiber by supplying compressed air to the two core yarns. A core yarn splicing device comprising a core yarn splicing device, in which the ends of the core yarns are butted together, an adhesive is applied to the butted portions, and the adhesive is cured and joined. Automatic winder. The yarn splicing device for core yarns grips each of the two core yarns and is movable with respect to each other, and a pair of first cutter members for forming an end of the core yarn gripped by each of the clamp members And a pair of air nozzles for supplying compressed air to the end portions of the core yarn, and a pair of end portions of the core yarn that are further cut so that the end faces of the core yarns are brought into contact with each other by bringing the clamp members closer to each other A second cutter member, a resin supply means for applying an adhesive made of a photo-curing resin to the abutting portion thereof, and a light irradiation means for curing the applied photo-curing resin. Item 7. The automatic winder according to item 6. 8. The automatic winder according to claim 7, wherein the light irradiation means comprises a semiconductor laser.

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