JP3697537B2 - Automatic winder with yarn splicing method, seam and splicing device - Google Patents

Description

【００５３】
【発明の効果】
以上説明したように、本発明の糸継ぎ方法及びその継ぎ目によると、糸種によらず継ぎ目を形成でき、強撚糸や双糸のように糸継ぎが難しいとされてきた糸も接合できる。また、継ぎ目を短く且つ小さく形成することができるため、染色時の変色部分も短くなり、目立ちにくくなるため、織物や編み物にしたときに欠陥にならない。また、接着剤を適切に選択することにより、短時間の硬化が可能になり、糸継ぎ装置の高速化も可能になる。
【００５４】
本発明に係る糸継ぎ装置を備えた自動ワインダによれば、分離した２本の糸の端面同志を突き合わせ、光硬化樹脂により継ぐものであるため、継ぎ目部分が短い。また、従来のように糸端部の撚りをほぐすことがないため、継ぎ目部分が変色することなく継ぐことができる。さらに、光硬化樹脂の種類を選択することにより、継ぎ目部分の強度を他の部分よりも高くすることができ、また、従来例のノッタ形より継ぎ目部分が小さいため、継ぎ目部分が問題とならずに、その継いだ糸を織物や編物に使用することができる。そして、分離した糸を樹脂により接合するため、従来例に比し、適用できる糸の種類、番手が広いという利点もある。
【図面の簡単な説明】
【図１】単糸の継ぎ目の形成例を模式的に示す図である。
【図２】双糸の継ぎ目の形成例を模式的に示す図である。
【図３】継ぎ目の形成工程を示す工程図である。
【図４】図４は、本発明の糸継ぎ装置を備えた自動ワインダの実施例の作動状態を説明する側面図である。
【図５】図５は、図４に続く、作動状態を説明する側面図である。
【図６】図６は、図５に続く、作動状態を説明する側面図である。
【図７】図７は、図６に続く、作動状態を説明する側面図である。
【図８】図８は、本発明の糸継ぎ装置の第１実施例の作動状態を説明する正面図である。
【図９】図９は、図８に続く、作動状態を説明する正面図である。
【図１０】図１０は、図９に続く、作動状態を説明する正面図である。
【図１１】図１１は、図１０に続く、作動状態を説明する正面図である。
【図１２】図１２は、図１１に続く、作動状態を説明する正面図である。
【図１３】図１３は、図１２に続く、作動状態を説明する正面図である。
【図１４】図１４は、図１２に続く、本発明の糸継ぎ装置の第２実施例の作動状態を説明する正面図である。
【図１５】図１５は、図１４の斜視図である。
【図１６】図１６は、図１５の側面図である。
【符号の説明】
１、１１ 親糸
２、１２ 継ぎ目
３、１３ 接着剤
１ａ、１１ａ 一方の糸端
１ｂ、１１ｂ 他方の糸端
１ｃ、１１ｃ 一方の糸端の突き合わせ面
１ｄ、１１ｄ 他方の糸端の突き合わせ面
ｄ１、ｄ１１ 親糸の平均直径
ｄ２、ｄ１２ 接合部分の最大直径
Ｌ１、Ｌ１１ 突き合わせ面の間隔
Ｌ２、Ｌ１２ 接合部分の長さ
１０１ 糸継ぎ装置
１１０、１１１ 一対のクランプ部材
１２０、１２１ 一対のカッター部材
１３０ 樹脂供給手段
１３１ 樹脂供給手段の供給口
１４０ 光照射手段
１５０ 遮蔽手段
１６０、１６１ 検知手段[0001]
[Industrial application fields]
The present invention relates to a yarn splicing method, a yarn seam formed by the splicing method, and an automatic winder including a splicing device that embodies the splicing method.
[0002]
[Prior art]
As spun yarn spun yarn splicing methods, (1) a knotting method that mechanically connects two yarn ends, (2) an air splicer method that aligns two yarn ends in parallel and twists them by the action of a swirling air flow, etc. Is known as practical.
[0003]
The knotting method includes a Fisherman knot or a whisker knot depending on a knot type, and a predetermined knot can be formed by using a corresponding automatic yarn splicing device. This knotting method has the advantage of being strong and capable of handling relatively large counts. On the other hand, since the seam appears in a hump-like protruding state, it is necessary to push the hump-like seam into the back side of the fabric when it is made into a woven or knitted fabric.
[0004]
As an air splicer method, an automatic splicing device is known that unwinds two yarn ends, aligns them, and twists them by the action of a swirling air flow. This air splicer method has an advantage that no projecting portion is generated at the seam, and the seam becomes almost inconspicuous when a woven or knitted fabric is formed. On the other hand, the range of yarn types that are difficult to apply is wider than that of the knotting method, and it is inevitable that the seam becomes 20 to 25 mm long. In addition, there is a drawback that the strength of the seam tends to be lower than the parent yarn.
[0005]
Although not yet put into practical use, a method has been proposed in which a thermoplastic synthetic resin is supplied in a molten state to the aligned yarn ends, and a seam is formed by solidifying the supplied synthetic resin. Yes. However, since the molten synthetic resin begins to solidify when supplied to the aligned yarn ends, the seam becomes thick and it is difficult to make the size and shape constant.
[0006]
Next, an automatic winder equipped with a yarn splicing device that realizes the above-described yarn splicing method will be described. This automatic winder cuts and removes defective portions of the yarn when winding the yarn supplied from the yarn feeding bobbin onto a winding package, and automatically joins the two yarns separated by the cutting. is there. This yarn splicing device has been developed from a knot shape to an air splicer. As described above, this knot shape mechanically ties the ends of two yarns separated by cutting, has a merit that the knot has high strength and can be applied to a yarn having a relatively large count. is there. However, since the seam of the thread spliced in this knotter shape has a hump-like protruding state, there is a demerit that when this is used for a woven fabric or knitted fabric, the hump-like protruding portion must be pushed into the back side of the fabric.
[0007]
In addition, as described above, for the air splicer, the twists of the two separated yarn ends are loosened with compressed air, and then the respective yarn ends are overlapped and further twisted with compressed air to instantly It is a device that can splice two yarns. By providing this air splicer, the joints do not protrude like the knots of the knotter type, and the seams are hardly noticeable, so the disadvantages of the knotter type can be eliminated. However, this air splicer also has a demerit, and in splicing with an air splicer, the joint portion becomes long (approximately 20 to 25 mm), and when the spliced yarn is dyed, the joint portion may be discolored. The strength of the joint portion is lower than that of the unjoined portion. In addition, there is a demerit that the range of yarn types applicable to the air splicer is relatively narrow due to its structure.
[0008]
[Problems to be solved by the invention]
Therefore, the present invention solves such problems of the prior art, is not limited to yarn types, can ensure the continuity of twisting of two yarn ends, has excellent seam strength, dyeing A splicing method and a seam having good properties are provided, and an automatic winder provided with a splicing device using a photo-curing resin, in which the splicing method is put into practical use, is provided.
[0009]
[Means for Solving the Problems]
In the yarn splicing method of the present invention that achieves the above object, two yarn ends are butted together, an adhesive is applied to the butted portion, the adhesive is cured, and the yarn is joined.
In the above configuration, the ends of the yarns are not aligned but joined together with an adhesive, so that the seam can be formed narrower than those that are aligned or tied, and the adhesive penetrated into the short fibers. The joints can be joined with a short seam length. In addition, by selecting an adhesive, the strength of the seam can be increased and the elongation of the seam can be made appropriate.
[0010]
In the configuration of the yarn splicing method of the present invention, the adhesive is photocurable, which is cured by light irradiation.
In the above configuration, the yarn ends are not cut and untwisted, and the twists of both yarn ends are substantially continuous at the seam, so that the seam can be formed narrower and shorter.
[0011]
In the configuration of the yarn splicing method of the present invention, the light is ultraviolet light.
In the above configuration, before the ultraviolet irradiation, the butt portion is appropriately impregnated while maintaining an appropriate viscosity, can be cured instantaneously by the ultraviolet irradiation, and a seam can be formed in a short time.
[0012]
In the configuration of the yarn splicing method of the present invention, the light is a laser beam.
In said structure, light can be irradiated to an attached part pinpoint, and since hardening time is short and light emission time is also short, it is excellent also in economical efficiency.
[0013]
In the configuration of the yarn splicing method of the present invention, the yarn is a spun yarn formed by giving a twist to a short fiber, and the ends of the spun yarn are butted to each other and are permeable to the short fiber. The adhesive is cured in a state where an adhesive having a thickness is applied to the butted portion.
In the above configuration, the seam can be shortened and thinned.
[0014]
In the configuration of the yarn splicing method of the present invention, the two spliced yarn ends are abutted in a cut state, and the twists of both yarn ends are substantially continuous at the joint.
In the above-described yarn splicing method, the yarn ends are cut and untwisted, and the twists at both yarn ends are substantially continuous at the seam, so that the seam is formed finer and shorter. be able to.
[0015]
In the configuration of the joint of the yarn of the present invention, two yarn ends to be joined are butted together, and the butted surface and / or both side portions thereof are joined by an adhesive. Further, the length of the bonded portion by the adhesive is within 10 times the average diameter of the yarn, and the maximum diameter of the bonded portion is within 2.5 times the average diameter of the yarn.
In the above configuration, the seams are not conspicuous and do not cause defects when woven or knitted.
[0016]
In the configuration of the automatic winder of the present invention, a yarn splicing device is mounted in which two yarn ends are butted together, an adhesive is applied to the butted portion, the adhesive is cured, and the yarn is joined. In addition, the yarn splicing device grips each of the two yarns and can move so as to approach each other, and when each of the clamp members approaches, the end face of each of the yarns gripped by them Are provided with a pair of cutter members that are cut so as to face each other, a resin supply means that applies a photocurable resin to the abutted portion, and a light irradiation means that cures the applied photocurable resin.
In the above configuration, since the cut end surfaces of the two yarns are butted and joined, the length of the seam portion is short, and the continuity of twisting of the yarn after joining can be ensured. Before and after the joint portion is not discolored, and by selecting the type of the photo-curing resin, the strength of the joint portion can be higher than that of the other portions.
[0017]
In the configuration of the automatic winder of the present invention, the supply port of the resin supply means is provided with shielding means that opens when the photocurable resin is supplied and shields after supply of the photocurable resin.
In the above configuration, even when the light irradiation means irradiates, the curing of the photo-curing resin at the supply port of the resin supply means can be prevented, so that the supply port is not blocked.
[0018]
In the configuration of the automatic winder according to the present invention, the automatic winder includes a pair of detection means for detecting the presence or absence of the yarn gripped by each clamp member, and the resin supply means applies the photocurable resin based on the detection result of each detection means. .
When each clamp member fails to grip the yarn because each clamp member is configured to grip two yarns by a preset operation and abut the cut end surfaces of each yarn. Can not butt each thread. Therefore, in the above configuration, when each clamp member fails to grip the yarn, the resin supply means can prevent the photocurable resin from being supplied, thereby preventing unnecessary supply of the photocurable resin. .
[0019]
In the configuration of the automatic winder according to the present invention, the light irradiation means is formed of a semiconductor laser.
In the above configuration, the attachment part can be irradiated with light at a pinpoint, and the curing time is short and the light emission time is short, so that it is excellent in economy and the splicing device can be made compact as a whole. it can.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for splicing a yarn according to the present invention and an embodiment of the joint will be described with reference to the drawings. FIG. 1 is a diagram schematically illustrating a single yarn joining example, and FIG. 2 is a diagram schematically illustrating a twin yarn joining example.
[0021]
In FIG. 1, one yarn end 1 a of the parent yarn 1 and the other yarn end 1 b of the parent yarn 1 are abutted without being aligned (without being overlapped), and a joining portion 2 by the adhesive 3 is formed. One yarn end 1a and the other yarn end 1b have butt faces 1c and 1d cut perpendicularly to the center point of the yarn by a cutter. The distance Ll between the butted surfaces 1c and 1d is as small as the accuracy of butting the yarn ends after being cut by the automatic yarn splicing device, for example, within 0.2 mm. The adhesive 3 penetrates between the short fibers at approximately equal distances from the butted surfaces 1c and 1d to the both side portions, and the joining portion 2 is formed by the adhesive 3 filled in the gap Ll.
[0022]
One yarn end 1a and the other yarn end 1b are abutted in a cut state, and the twist of one yarn end 1a and the twist of the other yarn end 1b are substantially continuous. Yes. The adhesive 3 penetrates between the short fibers on both sides of the yarn end 1a and the other yarn end 1b, and the gap L1 is filled with the adhesive 3, so that both yarns can be obtained even if the length L2 of the joining portion 2 is short. The ends 1 a and 1 b are strongly bonded via the adhesive 3.
[0023]
This joint portion or seam 2 is applied to single yarn, high twist yarn, innovative spun yarn and the like. By making the viscosity at the time of application of the adhesive 3 appropriate, the length of the joining portion 2 is within 10 times the average diameter dl of the parent yarn 1 regardless of the yarn count, and within 2 mm in absolute value, preferably within 7 times. The absolute value can be within 1.5 mm. Further, the yield of the maximum diameter d2 of the joint portion 2 with respect to the average diameter dl of the parent yarn 1 can be 2.5 times, preferably within 2 times. By forming the joining portion 2 in a compact manner in this manner, the joining portion 2 of the yarn is not conspicuous when woven or knitted.
[0024]
FIG. 2 shows a joint portion 12 when a twin yarn obtained by further twisting two single yarns becomes the parent yarn 11. One yarn end 11a of the parent yarn 11 and the other yarn end 11b of the parent yarn 11 are cut while maintaining the twin yarn state, and the butted surfaces 11c and 11d are opposed to each other. In this state, the bonding portion 12 is formed by closing the gap Lll with the adhesive 13 and allowing the adhesive 13 to penetrate into the length L12.
[0025]
The joint portion, that is, the seam 12 is applied to a twin yarn or a wool yarn. By making the viscosity at the time of application of the adhesive 13 appropriate, it is possible to make the length of the joint portion 12 within 10 times, preferably within 7 times the average diameter dll of the parent yarn 11 regardless of the yarn count. In addition, the ratio of the maximum diameter d12 of the joint portion 12 to the average immediately after dll of the parent yarn 11 can be 2.5 times, preferably within 2 times. By thus forming the joint portion 12 in a compact and uniform manner, the strong variation in the seam is reduced.
[0026]
As the adhesives 3 and 13 used for the joining portions 2 and 12 in FIGS. 1 and 2, various adhesives can be used as long as the following conditions are satisfied. (1) It is permeable to the yarns 1 and 11 before curing, and can penetrate between the twisted short fibers constituting the yarns 1 and 11, and follows the bending of the yarns 1 and 11 after curing. There must be elongation that can be done. (2) The curing process is preferably performed in a short time within 1 second, and the fluidity is maintained before the curing process. (3) Preferably, it has properties similar to spun yarn so that it does not react with acids or human oils, but reacts with cotton oil or poly oils and hardens.
[0027]
Among the above conditions, an adhesive using an ultraviolet curable resin is one that satisfies at least (1) and (2). By selecting the resin composition, the condition (3) can be satisfied to some extent. Before irradiation with ultraviolet rays, it has fluidity and penetrates into the short fibers, and is filled in the distances Ll and Lll by the surface tension, and stably maintains the state of penetration into the lengths L2 and L12. When irradiated with ultraviolet rays in this state, it is cured instantaneously within 1 second. After curing, the resin has a certain degree of elongation. Further, a thermosetting resin that has fluidity before curing and can be cured instantaneously within 1 second by irradiation with heat rays such as a halogen lamp can be used.
[0028]
With reference to FIG. 3, the process of forming the vertical lines 2 and 12 as shown in FIGS. 1 and 2 will be described. In FIG. 3A, each of a pair of yarns to be joined is held by clamps 30 and 30 that can be opened and closed freely, and the cutters 31 and 31 are operated on the pair of yarns in a direction perpendicular to the yarn center direction, A yarn end 1a and a yarn end 1b are formed.
[0029]
In FIG. 3B, the yarn end 1a and the yarn end 1b are moved to the adhesive application position by the clamps 30 and 30, and an ultraviolet curable resin is applied to the butt surface 1c of the yarn end 1a and the butt surface 1d of the yarn end 1b from the tip by a predetermined length. Impregnate.
[0030]
In FIG. 3C, the yarn end 1a and the yarn end 1b are moved to the butting position by the clamps 30 and 30, and the butting surface 1c of the yarn end 1a and the butting surface 1d of the yarn end 1b are butted. The adhesive at the yarn end 1a and the adhesive at the yarn end 1b are united by surface tension.
[0031]
In FIG. 3C, with the yarn end 1 a and the yarn end 1 b kept in contact with each other, ultraviolet rays are irradiated from the ultraviolet lamp 32 to cure the adhesive and form the joint 2. After the seam 2 is formed, the clamps 30 and 30 are opened, and the yarn is fed out by a driving device (not shown).
[0032]
In addition, you may perform application | coating of an adhesive agent in the state which faced the thread end 1a and the thread end 1b as shown in FIG. Further, in conjunction with the operation of the cutter 31 in FIG. 3A, an adhesive may be applied to the yarn end during or immediately after cutting.
[0033]
In addition, when a thermosetting resin is applied, a halogen lamp that irradiates heat rays is used instead of the ultraviolet lamp 32, or a pair of hot plates having a semicircular groove formed on the inner surface thereof are pressure-bonded. The curable resin may be cured. Even when using a photo-curing resin, the adhesive may be cured by using a semiconductor laser instead of the ultraviolet lamp 32 and applying a laser beam to the butted portion of the yarn end 1a and the yarn end 1b.
[0034]
1 and 2 formed by the above-described process have the following characteristics.
(1) Since the adhesive penetrates the short fibers at the yarn end of the joint portion, even if the amount of the adhesive supplied to the joint portion is small, it can be firmly bonded, and the seam can be formed short and small.
(2) Since the butted state after cutting is fixed with an adhesive, bonding is possible as long as it is not broken apart by cutting, so that bonding can be performed regardless of the yarn type.
(3) By appropriately mixing the components of the adhesive, curing can be performed in a short time, and the formation of the seam is accelerated.
(4) By appropriately blending the components of the adhesive, it becomes possible to make the flexibility after curing the same level as the parent yarn.
[0035]
Hereinafter, embodiments of the automatic winder of the present invention will be described in detail.
[0036]
In FIG. 4, this is an automatic winder equipped with a yarn splicing device 101, which has a yarn feeding bobbin B on the lower side and a winding package P on the upper side, and a yarn YP supplied from the yarn feeding bobbin B. It winds around the winding package P which rotates. The yarn YP fed from the yarn feeding bobbin B is passed through the guide G, imparts an appropriate tension to the yarn YP by the tensor T, and passes through the rotating traverse drum D, whereby a yarn having a predetermined thickness is applied to the winding package P. YP is taken up. And the detection apparatus F always detects the thickness of the thread | yarn YP to pass so that the thread | yarn which has a fault part may not be wound up in this winding package P. FIG.
[0037]
4, in FIG. 5, when the winding package P is winding the yarn YP fed from the yarn feeding bobbin B, the detection device F compares it with information on the yarn thickness set in advance. Thus, the yarn defect of the passing yarn YP is detected. When the detecting device F detects a yarn defect, a cutter (not shown) provided in the detecting device F cuts the yarn YP, and the winding package P stops rotating. Then, winding from the yarn feeding bobbin B is stopped. As a result, the upper yarn Y1 is wound around the package, and the lower yarn Y2 is sucked into the yarn suction port (yarn trap) W on the upper side of the guide G.
[0038]
5 and FIG. 6, in the state shown in FIG. 5, the upper thread suction arm S1 pivots clockwise about the upper shaft D1, and the lower thread suction arm S2 counterclockwise about the lower shaft D2. Turn around. Each of the suction arms S1, S2 has a hollow inside and is connected to the intake duct KP. By suction of the intake duct KP, the tip portions S1a and S2a of the suction arms S1 and S2 serve as suction ports, the upper thread suction arm S1 is the upper thread Y1, and the lower thread suction arm S2 is the lower thread. Y2 is sucked and the yarns Y1 and Y2 are gripped.
[0039]
Following FIG. 6, in FIG. 7, with each suction arm S1, S2 gripping each yarn Y1, Y2, the upper yarn suction arm S1 descends by rotating counterclockwise about the upper shaft D1. Further, the lower thread suction arm S2 is swung up by rotating clockwise around the lower shaft D2. Accordingly, each of the upper yarn Y1 and the lower yarn Y2 is guided to a predetermined position of the yarn splicing device 101 via the front side 101a of the yarn splicing device 101.
[0040]
Next, description will be made on the case where the yarn splicing device 1 splics the upper yarn Y1 and the lower yarn Y2. In FIG. 8, this shows the front surface 101a of the yarn splicing device 101, which is provided with an upper thread clamp member 110 above the machine base 101A and a lower thread clamp member 111 below. The members 110 and 111 include first clampers 110a and 111a and second clampers 110b and 111b. They are usually in a separated state, and in this state, as shown in FIG. 7, each suction arm S1, S2 puts the upper thread Y1 between the clampers 110a, 110b of the upper thread clamp member 110. The lower thread Y2 is guided between the clampers 111a and 111b of the lower thread clamp member 111, and the state is maintained. The yarns Y1 and Y2 are placed on a pair of reference blocks B1 and B2 having the same height with respect to the machine base 101A, and the upper yarn Y1 is placed on the upper yarn reference block B1 and the lower yarn Y2 Is placed on the lower thread reference block B2.
[0041]
Following FIG. 8, in FIG. 9, the respective first clampers 110a, 111a are moved with the respective yarns Y1, Y2 positioned between the respective clampers 110a, 110b, 111a, 111b of the respective clamp members 110, 111. The plate surface of the clamper comes into contact with the plate surfaces of the second clampers 110b and 111b facing each other, thereby gripping the yarns Y1 and Y2 positioned between them. Even in this case, since the yarns Y1 and Y2 are both placed on the reference blocks B1 and B2, the yarns Y1 and Y2 are always kept at the same height with respect to the machine base 101A.
[0042]
As shown in FIG. 10, a pair of cutter members 120, 121 are arranged between the clamp members 110, 111 and in the vicinity of the clamp members 110, 111. An upper thread cutter member 120 is disposed near the upper thread clamp member 110, and a lower thread cutter member 121 is disposed near the lower thread clamp member 111. Each of the cutter members 120 and 121 is composed of fixed blades 120a and 121a and movable blades 120b and 121b, and the upper thread cutter member 120 lowers the upper thread Y1 by moving the movable blades 120b and 121b. The yarn cutter member 121 is configured to cut the lower yarn Y2. Subsequently to FIG. 9, in FIG. 10, with the clamp members 110 and 111 holding the yarns Y <b> 1 and Y <b> 2, the yarns Y <b> 1 and Y <b> 2 are cut by moving the movable blades 120 b and 121 b.
[0043]
Continuing to FIG. 10, in FIG. 11, the clamp members 110 and 111 move in a direction approaching each other with the upper thread Y <b> 1 and the lower thread Y <b> 2 gripped, and the upper thread Y <b> 1 and The cut end surfaces of the lower thread Y2 are abutted against each other. At that time, since the respective yarns Y1 and Y2 are placed on the respective reference blocks B1 and B2, the clamp members 110 and 111 move to the left and right so that the axial directions of the respective yarns Y1 and Y2 are aligned. If comprised so, the cut surface of each thread | yarn Y1, Y2 will be faced | matched correctly. For the upper yarn Y1, the cut yarn below the upper yarn cutter member 110, and for the lower yarn Y2, the cut yarn above the lower yarn cutter member 111 is the clamp member 110, respectively. Since it is not gripped by 111, it is sucked by the suction arms S1, S2, whereby the yarn having the defective part is discarded in the intake pipe KP.
[0044]
Continuing to FIG. 11, in FIG. 12, with the cut end faces of the respective yarns Y <b> 1 and Y <b> 2 being abutted, the supply port 131 of the resin supply means 130 approaches the butted portion, and photocurable resin is supplied from the supply port 131. It comes to apply. The resin supply means 130 is composed of a syringe-like container, and includes a main body 132, a supply port 131, and a cylinder 33. The main body 132 is attached to a pedestal CA that can move forward and backward, and a photo-curing resin is accommodated in the main body 132. Then, with the cut end surfaces of the upper thread Y1 and the lower thread Y2 being in contact with each other, the pedestal CA advances, and at the same time, the shielding means 150 described later moves upward to open the supply port 131 of the resin supply means 130. It is like that. Then, the supply port 131 of the resin supply means 130 is close to the butt portion of each yarn Y1, Y2, and the cylinder 133 is operated to discharge a predetermined amount of the photo-curing resin inside the main body 132, so that the butt portion is It is comprised so that photocuring resin may be apply | coated.
[0045]
Following FIG. 12, in FIG. 13, the light irradiation means 140 irradiates the portion where the cut end surfaces of the upper yarn Y1 and the lower yarn Y2 are abutted with the photo-curing resin applied thereto, and thereby the abutted portion The applied photo-curing resin is cured. The light irradiation means 140 is adapted to irradiate light for curing the photocurable resin. In this embodiment, the light curable resin is an ultraviolet curable resin, and the light irradiation means 140 irradiates the ultraviolet light. It is supposed to be. When the light irradiation means 140 irradiates, the pedestal CA is moved back to its original position, whereby the supply port 131 of the resin supply means 130 is separated from the abutting portion of the yarns Y1 and Y2, and at the same time, the shielding means. By returning 150 to the original position, the plate portion 151 of the shielding means 150 shields the supply port 131. Accordingly, the light curable resin existing in the supply port 131 of the resin supply unit 130 can be prevented from being exposed to light from the light irradiation unit 140, and the supply port 131 is not blocked. The light irradiation means 140 is configured to emit light in a flash form, and the number of flashes is set in advance depending on the type of the photo-curing resin. Thereby, the power consumption for irradiation by the light irradiation means 140 can be minimized. In addition, by providing a heater (not shown) near the resin supply means 130, when the ambient temperature is low, it can be operated to adjust the viscosity of the photocurable resin inside the resin supply means 130, As a result, it is possible to always achieve a viscosity suitable for the yarn count to be spliced.
[0046]
Furthermore, a pair of detection means 160, 161 is provided in the vicinity of each clamp member 110, 111, and each detection means 160, 161 is each clamper 110a, 110b, 111a of each clamp member 110, 111 in FIG. , 111b is set to operate when abutting. Upper thread detection means 160 is disposed near the upper thread clamp member 110, and lower thread detection means 161 is disposed near the lower thread clamp member 111. The upper thread detecting means 160 is configured to detect the upper thread Y1, and the lower thread detecting means 161 is detected to detect the lower thread Y2. The detecting means 160 and 161 do not detect the respective threads Y1 and Y2. In other words, if each of the clamp members 110 and 111 fails to grip each of the yarns Y1 and Y2, the upper yarn Y1 and the lower yarn Y2 cannot be joined, so the operation from FIG. In this way, it is possible to prevent wasteful supply or dripping of the photo-curing resin. Then, the operation after FIG. 5 is set again, and this operation is repeated until the yarn splicing succeeds. When the yarn splicing is successful, that is, when each of the detection means 160 and 161 detects each of the yarns Y1 and Y2 and performs the operations up to FIG. 13, the winding package P rotates again. The yarn YP from the yarn supplying bobbin B is wound up, and the yarn YP having no defect portion can always be wound up. In the above-described embodiment, the spun yarn is used as the spliced yarn, but, of course, it can also be applied to a compound fiber such as a filament yarn.
[0047]
Next, a second embodiment different from the first embodiment will be described. The description of the same parts as those in the first embodiment will be omitted. 14 to 16 are views showing a yarn splicing device different from the first embodiment, and FIG. 14 of the second embodiment corresponds to FIG. 13 of the first embodiment. The light irradiation means 140 of the first embodiment emits diffusing light, such as a halogen lamp, and cures the photo-curing resin. In the second embodiment, the light irradiation means 140 attaches a lens to the semiconductor diode. A photo-curing that is a mounted semiconductor laser 140 ′ that emits a laser 141 by condensing light emitted from a semiconductor diode with a lens, hits the laser 141 against the butted portion of the two yarn ends, and is applied to that portion. The resin is cured. 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.
[0048]
14 to 16 show a state in which a photo-curing resin is applied to a portion where the cut end surfaces of the upper yarn Y1 and the lower yarn Y2 are abutted, and the laser 141 is irradiated from the semiconductor laser 140 ′ and the laser 141 is abutted. The photo-curing resin is cured by being applied to the portion. The semiconductor laser 140 ′ has a compact shape, can downsize the entire yarn splicing device 101, has low power consumption compared to the amount of light, and is excellent in economic efficiency. In the light curing means 140 of the first embodiment, the light diffuses and when the light curing resin adheres to the yarns Y1, Y2 and the clamps 110, 111, the yarns Y1, Y2 stick to the clamps 110, 111. In this second embodiment, however, the laser 141 is irradiated pinpoint to the butt portion of the yarns Y1 and Y2, so that the yarns Y1 and Y2 and the clamps are temporarily clamped. Even if a photo-curing resin adheres to 110 and 111, the yarns Y1 and Y2 and the resin adhering portions of the clamps 110 and 111 do not hit the laser 141 so that they do not stick to each other and fail to succeed in joining the yarns Y1 and Y2. It is like that. Furthermore, by irradiating at a pinpoint, the curability is higher than that of the first embodiment, the photocuring resin is instantly cured, the work speed is increased, and the life of the light irradiation means 140 is increased. is there. Further, since the shielding means 150 is provided so that the supply port 131 of the resin supply means 130 is not blocked by the light emitted from the light irradiation means 140, the second embodiment can apply light at a pinpoint. In the semiconductor laser 140 ′, it is not necessary to provide the shielding means 150, the number of components can be reduced, and the whole can be simplified.
[0049]
【Example】
Hereinafter, specific examples of the yarn joining method of the present invention and the joints will be described. In this example, 16 seams were formed on a spun yarn having a yarn type of 40 and a count of 40 using a commercially available UV curable resin (No. 363 manufactured by Loctite).
[0050]
The length L2 of the seam in FIG. 1 is 1.4 mm, and the average diameter dl of the yarn is 0.2 mm. Therefore, the ratio of the seam length to the yarn diameter is 7 times. The maximum diameter d2 of the seam is 0.4 mm, and the ratio of the thickness of the seam to the yarn diameter is twice. The length of the discontinuous portion of the seam is as short as 1.4 mm, and the length of the discontinuous portion is 1/10 or less compared to the air splicer method, and the influence on gloss and texture when woven or knitted can be ignored. .
[0051]
Physical properties such as the tenacities of 16 yarns having seams formed in this way and 16 parent yarns were measured. The results are shown in Table 1. As shown in Table 1, the physical properties of the seam are not much different from the parent yarn.
[0052]
[Table 1]

[0053]
【The invention's effect】
As described above, according to the yarn splicing method and the seam of the present invention, a seam can be formed regardless of the yarn type, and yarns that have been considered difficult to splice, such as strong twisted yarns and twin yarns, can be joined. Further, since the seam can be formed short and small, the discolored portion at the time of dyeing is shortened and becomes inconspicuous, so that it does not become a defect when woven or knitted. In addition, by selecting an adhesive appropriately, it is possible to cure in a short time and to increase the speed of the yarn splicing device.
[0054]
According to the automatic winder provided with the yarn splicing device according to the present invention, the end surfaces of the two separated yarns are abutted and joined by the photo-curing resin, so the seam portion is short. Moreover, since the twist of the yarn end portion is not loosened as in the prior art, the seam portion can be joined without being discolored. Furthermore, by selecting the type of photo-curing resin, the strength of the seam portion can be made higher than other parts, and the seam portion is smaller than the conventional knotter type, so the seam portion is not a problem. In addition, the spliced yarn can be used for woven fabrics and knitted fabrics. Further, since the separated yarns are joined by resin, there is an advantage that the types of yarns and counts that can be applied are wider than in the conventional example.
[Brief description of the drawings]
FIG. 1 is a diagram schematically showing an example of forming a seam of a single yarn.
FIG. 2 is a diagram schematically showing a formation example of a seam of a twin yarn.
FIG. 3 is a process diagram showing a seam forming process.
FIG. 4 is a side view for explaining an operating state of an embodiment of an automatic winder provided with a yarn splicing device of the present invention.
FIG. 5 is a side view for explaining an operating state following FIG. 4;
FIG. 6 is a side view for explaining an operating state following FIG. 5;
FIG. 7 is a side view for explaining an operating state following FIG. 6;
FIG. 8 is a front view for explaining the operating state of the first embodiment of the yarn splicing device of the present invention.
FIG. 9 is a front view for explaining an operating state following FIG. 8;
FIG. 10 is a front view for explaining an operating state following FIG. 9;
FIG. 11 is a front view for explaining an operating state following FIG. 10;
FIG. 12 is a front view for explaining an operating state following FIG. 11;
FIG. 13 is a front view for explaining an operating state following FIG. 12;
FIG. 14 is a front view for explaining the operating state of the second embodiment of the yarn splicing device of the present invention, following FIG. 12;
FIG. 15 is a perspective view of FIG. 14;
FIG. 16 is a side view of FIG. 15;
[Explanation of symbols]
1,11 Parent thread
2,12 seams
3,13 Adhesive
1a, 11a One thread end
1b, 11b The other thread end
1c, 11c Butt face of one yarn end
1d, 11d The other yarn end butting surface
d1, d11 Parent thread average diameter
d2, d12 Maximum diameter of joint
L1, L11 Butting surface spacing
L2, L12 Joint length
101 Yarn splicer
110, 111 A pair of clamp members
120, 121 A pair of cutter members
130 Resin supply means
131 Supply port of resin supply means
140 Light irradiation means
150 Shielding means
160, 161 detection means

Claims (13)

A yarn splicing method characterized in that two yarn ends are butted together, an adhesive is applied to the butted portion, the adhesive is cured, and the yarn is joined. The yarn splicing method according to claim 1, wherein the adhesive is light curable by curing with light. The yarn splicing method according to claim 2, wherein the light is ultraviolet light. The yarn splicing method according to claim 2, wherein the light is a laser beam. The yarn is a spun yarn formed by twisting the short fiber, the ends of the spun yarn are butted together, and an adhesive that is permeable to the short fiber is applied to the butted portion. A method for piecing a yarn, wherein the adhesive is cured. 6. The yarn splicing according to claim 5, wherein the two spliced yarn ends are butted in a cut state, and the twists of both yarn ends are substantially continuous at the joint. Method. A yarn seam characterized in that two yarn ends to be joined are butted together, and the butted surfaces and / or both side portions thereof are joined by an adhesive. The length of the joining portion by the adhesive is within 10 times the average diameter of the yarn, and the maximum diameter of the joining portion is within 2.5 times the average diameter of the yarn. Yarn seam. An automatic winder equipped with a yarn splicing device that abuts two yarn ends, applies an adhesive to the abutted portion, cures the adhesive, and joins the yarn. The yarn splicing device grips each of the two yarns, and a pair of clamp members that can move so as to approach each other. It is provided with a pair of cutter members that are cut so as to be combined, a resin supply means that applies a photocurable resin to the abutted portion, and a light irradiation means that cures the applied photocurable resin. The automatic winder according to claim 9. 11. The automatic winder according to claim 10, further comprising a shielding unit that opens at a supply port of the resin supply unit when the photocurable resin is supplied and shields the photocurable resin after the photocurable resin is supplied. 11. A pair of detection means for detecting the presence or absence of a thread held by each clamp member, and the resin supply means applies a photo-curing resin based on the detection result of each detection means. 11. An automatic winder according to 11. The automatic winder according to any one of claims 10 to 12, wherein the light irradiation means comprises a semiconductor laser.

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