JP3407110B2 - Method and apparatus for transferring yarn end - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn end transfer method and device used for a yarn threading device.

[0002]

2. Description of the Related Art Conventionally, as a yarn end transfer device of this type, as shown in FIG. 13, for example, a warp sheet S composed of a plurality of warp yarns R unwound from a loom beam B is vertically held with a yarn end up. G is stretched and held by G, the upper part of one warp R separated from the warp sheet S is cut and held, and the yarn end of the cut and held warp R is applied from above to bottom while applying warp tension to the warp R. Then, the yarn end of the warp yarn R is transferred to the tip of the pulling member M, and the passed warp member M is used by the pulling member M for the hole D ₁ of the dropper D for detecting thread breakage, and the warp operation. When pulling the warp between the hole H ₁ of the heald H and the reed tooth L _{1 of the} reed L as shown in JP-A-5-506280.
By passing the warp R through the opposing portion of the brush member and the receiving member arranged in the warp passage E, a warp tension is applied to the warp in the pulling process to prevent loosening of the warp in the pulling process and pull the warp. It is configured so that threading can be performed smoothly.

[0003]

However, in the case of the above-mentioned conventional structure, although the warp thread in the drawing process is passed through the portion where the brush member and the receiving member face each other to give the warp tension, the pull-down transfer is performed. In the process, there is no structure consisting of the brush member and the receiving member for applying the warp tension to the warp R, the warp may loosen in the pulling-down transfer process, and the warp may easily become entangled, and the warp passing path E may be generated. There is a risk that the passing of the yarn will become unstable and yarn breakage will occur, and further, during the transition from the pull-down transfer process to the pull-through process, for example when a stretchable yarn is used as the warp yarn, there is a risk of yarn breakage. Therefore, it has a disadvantage that it is a bottleneck for speeding up the drawing and passing operation.

[0004]

SUMMARY OF THE INVENTION The present invention is intended to solve such problems, and among the present invention,
According to a first aspect of the present invention, a warp sheet made up of a plurality of warp yarns unwound from a loom beam is stretched and held with the yarn end upwards in a vertical direction, and one warp yarn separated from the warp sheet is held. The upper end is cut and held, the yarn end of the cut and held warp yarn is folded back from above from above while applying warp tension to the warp yarn, and is conveyed down, and the yarn end of the warp yarn is passed to a drawing member and received. When the passed warp yarn is pulled by the pulling member, the warp yarn is passed through the facing portion of the brush member and the receiving member arranged in the warp passing path, so that the warp yarn in the pulling-down transfer process and the pulling process is improved. A yarn end transferring method is characterized in that a warp tension is applied and a spring member is locked so as to be able to ride over a folded-back portion of a warp at the time of transition from the pull-down transfer process to the pull-through process.

Further, the invention of the method according to claim 2 is characterized in that the relative position of the warp yarn and the drawing member is positioned by the guide member.

Further, the invention of the apparatus according to claim 3 is a thread tensioning mechanism capable of vertically holding a warp sheet composed of a plurality of warps unraveled from a loom beam in a vertical direction with the thread end up, and the warp thread. A yarn separating mechanism that separates one warp from a sheet and cuts and holds the upper part of the separated warp, and folds the end of the cut and held warp from top to bottom while applying warp tension to the warp. And a yarn transfer mechanism for transferring the yarn end of the warp yarn to the pulling member and a yarn pulling mechanism for pulling the passed warp yarn by the pulling member. The transfer mechanism is provided with a brush member and a receiving member capable of forming a facing portion that cooperates with the warp passing through the warp passing path to apply warp tension in the pulling-down transfer process and the pulling-down process, and the pulling down Of the warp during the transition from the transfer process to the drawing process Ri to be overcome to return part in yarn end transfer device characterized by comprising providing a spring member for locking.

According to a fourth aspect of the present invention, there is provided a clip member capable of opening and closing the yarn end of the warp yarn cut and held by the yarn separating mechanism by the yarn transferring mechanism, and releasing and holding the clip member. An endless belt mechanism that can be circulated and transferred from top to bottom is provided, and
The invention of a device according to claim 5 is characterized in that the spring member is a torsion spring, and
The invention of the described device is characterized in that the brush member is made of a conductive bristle material.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 12 show an embodiment of the present invention, in which 1 is a thread tensioning mechanism, which is a warp sheet S composed of a plurality of warp threads R unraveled from a loom beam. Upper and lower clamping bars 2.2 that can be stretched and held vertically with the upper side up
It is configured with.

Reference numeral 3 denotes a yarn separating mechanism, which separates a single warp R from the warp sheet S by a pulling mechanism (not shown), cuts the separated warp R above, and cuts the cut end. A holding member 4 capable of holding and releasing is provided.

Reference numeral 5 denotes a yarn transfer mechanism, which folds the yarn end of the warp R cut and held as described above while applying a warp tension to the warp R and pulls down and conveys the yarn end of the warp R. The structure is such that the warp thread R cut and held by the thread separating mechanism 3 is opened and closed to release and hold the clip member 7, and the clip member 7 in this case.
Of the endless belt mechanism 8 that can be circulated and transferred from above to below, and the driven pulley 10 and the drive pulley 11 of the vertical position of the mounting member 9 that is fixedly arranged facing the side of the warp sheet S. Arranged, driven pulley 10 and drive pulley 11
An endless belt 12, which is a timing belt, is wound between them, and the drive pulley 11 is rotationally driven by a control motor 12 to circulate and transfer the endless belt 12.
Two clip members 7 are attached to 2, and the clip member 7 comprises a movable member 7a and a fixed member 7b.
The warp R is held and released between the movable member 7a and the fixed member 7b by the opening / closing operation of a. The movable member 7a is a disk-shaped planar cam centered on the rotation axis of the driven pulley 10 and the drive pulley 11. Concavo-convex cam surfaces 14a and 15b of 14 and 15
In addition, it is configured to be opened / closed by a return spring (not shown) built in the fixing member 7b.

Reference numeral 16 denotes a thread pulling mechanism, which pulls the warp thread R delivered from the thread transfer mechanism 5 to, for example, a dropper, a heald, and a reed by a pulling member 6 which moves forward and backward by an advancing and retracting mechanism (not shown). It has a structure that allows it to pass through.

Reference numeral 17 is a brush member, and 18 is a receiving member. In this case, the upper and lower two brush members 17a and 17b and the receiving member 18 are attached to the attaching member 9, and the brush member 17a is attached to the brush base B ₁ . A plurality of bristle materials B ₂ are planted, and a facing portion Q as a contact portion between the bristle material B ₂ of the brush member 17 and the receiving member 18 is arranged in the warp passing path E, and a mounting member is also provided. Upper and lower brush members 17a, 17
The support pin 19 is attached to the boundary position of b, the winding portion a of the torsion spring 20a as the spring member 20 is inserted into the support pin 19, and one open end b of the torsion spring 20a is locked to the locking pin 21. The other open end c of the torsion spring 20a is made to face the facing portion Q, so that the facing portion Q between the upper brush member 17a and the receiving member 18 in the pull-down transfer process and the lower brush in the pulling process. Member 17b
A warp tension is applied to the warp R passing through the warp passage E by the facing portion Q of the warp and the receiving member 18, and the folded portion R ₁ of the warp R at the time of transition from the pull-down transfer process to the pull-in process is springed. The other end of the torsion spring 20a serving as the member 20 is hooked and locked by the other open end c thereof, and then the open end c is elastically bent by the folded-back portion R ₁ so that it can be overcome. A leaf spring may be used as the spring member 20.

In this case, the brush member 17 is made of a conductive bristle material B ₂ , and the warp R
V-shaped groove 22 capable of positioning the relative position between the drawing member 6 and the drawing member 6
The guide member 22 having a is attached to the attachment member 9.

Since this embodiment has the above structure,
As shown in FIGS. 1, 4 and 5, a warp sheet S composed of a plurality of warp threads R unraveled from a loom beam is stretched and held vertically by the thread tension mechanism 1 with the thread end up, and the thread separation mechanism 3 To separate the warp yarn R for one from the warp yarn sheet S, as shown in FIG.
The upper portion of the separated warp yarn R is cut and held by the holding member 4, and the yarn end of the cut and held warp yarn R is rotated by the clip member 7 of the yarn transfer mechanism 5 and the uneven cam surface of the planar cam 14 is rotated. The movable member 7a is clamped by the opening / closing operation in cooperation with the advancing / retreating operation of the movable member 7a as shown in FIG.
The clip member 7 is further transferred from the top to the bottom by the further cyclical transfer of the endless belt 12, and during this transfer, the warp R passes through the facing portion Q between the brush member 17 and the receiving member 18 arranged in the warp passing path E. The warp passes through the folded-back shape, and the warp R is generated by the braking action when the facing portion Q passes.
Warp tension is applied to the
As described above, during the transition from the pull-down transfer process to the pull-through process in which the yarn end of the warp R reaches the lower position, the folded-back portion R ₁ of the warp R serves as the spring member 20 and the other open end c of the torsion spring 20a. When the drawing member 6 grips the yarn end and retracts as shown in FIG.
5a cooperates with each other to open and release the yarn end, and the folded-back portion R ₁ of the warp R rides over the other open end c of the torsion spring 20a to pass the yarn end of the warp R to the drawing member 6 for threading. The warp R delivered to the drawing member 6 of the mechanism 16 is pulled by the drawing member 6, and the yarn drawing work is sequentially performed by repeating these operations.

Therefore, the facing portion Q between the brush member 17 and the receiving member 18 in which the warp R is arranged in the warp passage E.
The warp tension can be applied to the warp R in the pulling-down transfer process and the pulling-through process by passing the warp R through the same. It is possible to prevent loosening and entanglement, stabilize the passage of the warp yarn in the warp passage route, and prevent the yarn breakage. Further, the warp yarn at the time of transition from the pull-down transfer process to the pull-through process. Since it is locked so as to be able to ride over the folded-back portion, it is possible to prevent yarn breakage during the transition from the pull-down transfer process to the pull-through process, and to perform stable yarn transfer even when an elastic yarn is used as the warp R. In addition, it is possible to speed up the threading work.

In this case, the warp R is guided by the guide member 2
Since the relative position between the warp yarn R and the pulling member 6 is determined by 2, the warp yarn R can be reliably delivered to the yarn pulling mechanism 16.

Further, in this case, the clip member 7 capable of opening and closing the yarn end of the warp R cut and held by the yarn separating mechanism 3 to be held and released by the yarn transfer mechanism 5, and the clip member 7 from above to below. Since the endless belt mechanism 8 that can be circulated and transferred to the above is provided, by holding and releasing the warp R by the opening and closing operation of the clip member 7, the warp can be reliably held and released, and the transfer of the warp is ensured accordingly. And in this case the spring member 20 is a torsion spring 2.
0a, the structure can be simplified and yarn breakage can be prevented. Further, in this case, since the brush member 17 is made of the conductive bristle material 17b, generation of static electricity is suppressed. Entanglement of the warp yarns can be prevented, and the warp yarns R can be smoothly transferred.

Further, in this case, since the two clip members 7, 7 are arranged on the endless belt 9 of the endless belt mechanism 8, when one of the clip members 7 transfers the warp R, the other clip member 7 is clipped. The member 7 can be returned and transferred for the next transfer, and the yarn transfer speed can be increased accordingly. The endless belt 9 may have a structure in which one or three or more clip members 7 are arranged.

The present invention is not limited to the structure shown in the above embodiment, but the structures of the thread tensioning mechanism 1, the thread separating mechanism 3, the thread transferring mechanism 5 and the thread pulling mechanism 16 are appropriately changed. Then designed.

[0020]

As described above, according to the present invention as set forth in claim 1 or 3, the warp sheet composed of a plurality of warp yarns unwound from the loom beam is moved up and down with the yarn end up. The warp is separated from the warp sheet by the thread separating mechanism, the upper side of the separated warp is cut and held, and the thread end of the cut and held warp is moved from the top to the bottom by the thread transfer mechanism. The yarn ends of the warp yarns are passed to the pulling member, and the warp yarns passed to the pulling member of the yarn pulling mechanism are pulled by the pulling member. By passing the warp through the opposing portion of the brush member and the receiving member arranged in the warp passage, warp tension can be applied to the warp in the pull-down transfer process and the pull-through process. Warp pull-down transfer process and pull In either through process also to stabilize the passage of warp threads passing the warp path it is possible to prevent loosening or tangling of the warp can be prevented yarn breakage,
Further, since the spring member is locked so as to be able to ride over the folded portion of the warp at the time of transition from the pull-down transfer process to the pull-through process, thread breakage at the transition from the pull-down transfer process to the pull-through process is prevented. Therefore, even if the stretchable yarn is used as the warp yarn, stable yarn transfer can be performed and the speed of the threading operation can be increased.

Further, in the invention according to claim 2, since the relative position of the warp and the drawing member is positioned by the guide member, the warp can be reliably delivered to the yarn drawing mechanism. .

Further, in the invention according to claim 4, a clip member capable of opening and closing the yarn end of the warp yarn cut and held by the yarn separating mechanism in the yarn transferring mechanism and holding and releasing the yarn end,
Since the endless belt mechanism capable of circulating the clip member from the top to the bottom is provided, the warp can be held and released reliably by holding and releasing the warp by the opening and closing operation of the clip member. The transfer can be performed reliably, and in the invention of claim 5, since the spring member is a torsion spring, the structure can be simplified and the yarn breakage can be prevented. In the invention according to claim 6, since the brush member is made of a conductive bristle material, it is possible to suppress generation of static electricity and prevent entanglement of the warp yarns, and to smoothly transfer the warp yarns. You can

As described above, the intended purpose can be sufficiently achieved.

[Brief description of drawings]

FIG. 1 is an overall front view of an embodiment of the present invention.

FIG. 2 is an overall side view of an embodiment of the present invention.

FIG. 3 is an overall perspective view of an exemplary embodiment of the present invention.

FIG. 4 is a partial side view of the embodiment of the present invention.

FIG. 5 is a partial perspective view of the embodiment of the present invention.

FIG. 6 is a partial front view of the embodiment of the present invention.

FIG. 7 is a partial front view of the embodiment of the present invention.

FIG. 8 is a partial front view of the embodiment of the present invention.

FIG. 9 is a partial cross-sectional view of an exemplary embodiment of the present invention.

FIG. 10 is a partial perspective view of an embodiment of the present invention.

FIG. 11 is a partial front view of the embodiment of the present invention.

FIG. 12 is a partial front view of the embodiment of the present invention.

FIG. 13 is a perspective view showing the thread pulling through according to the embodiment of the present invention.

[Explanation of symbols]

R thread R ₁ folded-back part Q facing part 1 thread tension mechanism 3 thread separation mechanism 5 thread transfer mechanism 6 drawing member 7 clip member 8 endless belt mechanism 16 thread drawing mechanism 17 brush member 18 receiving member 20 spring member 20a torsion spring 22 Guide member

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masato Shirakawa 1-11-11 Harukishi, Niigata City, Niigata Prefecture Niigata Research and Development Center, National Institute of Advanced Industrial Science and Technology (56) Reference JP-A-11-107137 (JP, JP, A) Tokuheihei 5-506280 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) D03J 1/14

Claims (6)

(57) [Claims] 1. A warp sheet composed of a plurality of warp yarns unwound from a loom beam is stretched and held vertically with the yarn end up, and one warp separated from the warp sheet is cut and held above the warp sheet. The yarn end of the cut and held warp yarn is folded back from above while applying warp tension to the warp yarn and transferred downward, and the yarn end of the warp yarn is transferred to a drawing member, and the transferred warp yarn is When the warp is pulled by the pulling member, the warp is applied to the warp in the pulling-down transfer process and the pulling process by passing the warp through the facing portion of the brush member and the receiving member arranged in the warp passing path. At the same time, the spring member is locked so as to be able to ride over the folded-back portion of the warp at the time of transition from the pull-down transfer process to the pull-through process. 2. The yarn end transferring method according to claim 1, wherein the warp yarn is positioned by a guide member in a relative position between the warp yarn and the drawing member. 3. A thread tensioning mechanism capable of vertically stretching and holding a warp sheet composed of a plurality of warps unraveled from a loom beam with the thread end up, and separating one warp from the warp sheet, A yarn separating mechanism capable of cutting and holding the upper part of the separated warp, and a yarn end of the warp cut and held is folded back from top to bottom while applying warp tension to the warp, and is drawn down and transferred. A thread transfer mechanism for delivering the warp to the drawing member, and a thread drawing mechanism for performing the passing operation of the transferred warp by the drawing member. A brush member and a receiving member capable of forming a facing portion that applies a warp tension in cooperation with a warp passing through a warp passing path in the pulling process, and transition from the pulling-down transfer process to the pulling process Locked so that it can ride over the folded portion of the warp A yarn end transporting device comprising: 4. A clip member capable of opening and closing the yarn end of the warp cut and held by the yarn separating mechanism by the yarn transferring mechanism and releasing and holding the clip member, and the clip member can be cyclically transferred from top to bottom. The yarn end transfer device according to claim 3, further comprising an endless belt mechanism. 5. The yarn end transfer device according to claim 3, wherein the spring member is a torsion spring. 6. The yarn end transfer device according to claim 3, wherein the brush member is made of a conductive bristle material.