JP6933957B2 - Weaving device in rapier looms - Google Patents

Description

The present invention is a wefting device in a rapier loom that weaves using a tape-shaped flat yarn as a weft, and a rapier head whose standby position is set to the anti-feeding side advances toward the yarn feeding side and feeds the yarn. The present invention relates to a one-sided rapier type wefting device for wefting the flat yarn gripped on the yarn side while retracting.

In order to enable weaving using a tape-shaped flat yarn as a weft, a rapier loom in which a wefting device is configured to be able to weft such a flat yarn has been conventionally known. When the flat yarn is wefted, it is necessary to weft the flat yarn so that the flat yarn is not twisted or the like. Then, as a wefting device for realizing such wefting, there is a wefting device disclosed in Patent Document 1 below (hereinafter, referred to as "conventional device").

In the conventional device, the rapier head whose standby position is set to the anti-thread feeding side is advanced toward the yarn feeding side, and the rapier head grips the weft on the yarn feeding side, so that the weft is retracted as the rapier head retracts. This is a one-sided rapier type wefting device in which (flat yarn) is wefted. Incidentally, a rapier loom equipped with such a one-sided rapier type wefting device is also called a one-sided rapier loom.

Then, in the conventional device, the rapier head is provided with a thread gripping mechanism for holding the flat yarn in a gripped state at its tip. Further, the yarn gripping mechanism is in a state where the width direction of the flat yarn coincides with the horizontal direction and the warp yarn direction (of the loom) in order to prevent the flat yarn from being twisted at the time of wefting as described above. It is configured to grip the flat thread. Since the rapier head advances and retreats in a direction orthogonal to the warp yarn direction in the horizontal direction, its longitudinal direction coincides with the advancing and retreating direction of the rapier head. Further, the direction (width direction) orthogonal to the longitudinal direction of the rapier head coincides with the width direction of the flat thread in the state where the flat thread is gripped.

More specifically, the thread gripping mechanism of the conventional device is configured to grip the flat yarn between a pair of gripping surfaces facing each other in the longitudinal direction. Therefore, the gripping mechanism includes a first gripping portion and a second gripping portion having each gripping surface. Further, in the thread gripping mechanism, the first gripping portion is provided so as to be displaceable in the longitudinal direction in the rapier head, and in the thread gripping mechanism, the first gripping portion is said to be displaceable during the gripping operation of the flat thread. It is configured to be displacement driven in the longitudinal direction.

Further, in the conventional device, the flat yarn pulled out from the yarn feeder (bobin) is at a predetermined position in the warp yarn direction (a position corresponding to the position where the rapier head moves forward and backward), and the advance limit of the rapier head in the advance / retreat direction of the rapier head. In the vicinity, the width direction coincides with the horizontal direction and the warp thread direction, and the thread guide mechanism guides the user in the vertical direction (to be exact, from above to diagonally downward from the traveling path of the rapier head in the vertical direction). There is. On top of that, in the conventional device, the portion of the flat thread guided in the vertical direction by the guide mechanism is gripped by the thread gripping mechanism of the rapier head as described above while maintaining its orientation.

Japanese Unexamined Patent Publication No. 2012-046835

By the way, in order to grip the flat yarn between the pair of gripping surfaces, it is naturally necessary to arrange the flat yarn between the gripping surfaces. Then, in the conventional device, when the rapier head moves to the advance limit, the flat thread is arranged between the first grip portion and the second grip portion. However, in the case of the conventional device, the flat yarn is guided at a predetermined position as described above by the yarn guide mechanism. Therefore, in the conventional device, the second grip portion is of the flat yarn in the width direction before the rapier head reaches the advance limit so that the flat thread and the second grip portion do not interfere with each other as the rapier head advances. It is configured to swing and displace outside the existing range.

More specifically, in the conventional device, the first grip portion is displaced to the rear side in the longitudinal direction (the receding direction side of the rapier head) before the rapier head reaches the advance limit, and the first grip portion is displaced to the rear side. The second grip portion is configured to swing and displace as described above with the displacement. Further, in the conventional device, when the rapier head reaches the advance limit and the flat yarn is arranged between the first grip portion and the second grip portion in the longitudinal direction, the second grip portion is in the width direction. The first grip portion is configured to be displaced forward in the longitudinal direction as the rapier head retracts. Then, due to such displacement of the first and second grip portions, in the conventional device, the flat yarn is in a state of being gripped by the first grip portion and the second grip portion.

As described above, in the conventional device, with respect to the first grip portion and the second grip portion constituting the portion for gripping the flat yarn, the first grip portion is displaced in the longitudinal direction when gripping the flat yarn. At the same time, the second grip portion is oscillated and displaced in the width direction. As described above, the conventional device is a device in which the configuration for realizing the gripping of the flat yarn is complicated and the operation for gripping the flat yarn is also complicated. In the rapier loom, wefting is performed a plurality of times per second, and the rapier head reciprocates over the weaving width for each weaving. That is, the rapier head is driven so as to move forward and backward at high speed each time the weft is inserted. Therefore, the complexity of the configuration on the rapier head as described above is not preferable because it may cause an adverse effect on the advancing / retreating movement of the rapier head at high speed. In addition, the complicated operation for gripping also causes a misgrabbing of the flat yarn.

Therefore, the present invention relates to the weaving device in the rapier loom for weaving the flat yarn as described above, and the weaving device does not complicate the configuration of the rapier head itself and the gripping operation for gripping the flat yarn. The purpose is to provide.

As described above, the present invention is a wefting device in a rapier loom that weaves using a tape-shaped flat yarn as a weft, and a rapier head whose standby position is set to the counter-feeding side is directed toward the yarn feeding side. It is premised on a one-sided rapier type wefting device that advances and wefts the flat yarn gripped on the yarn feeding side while retracting. On that basis, the present invention has the following features in the weaving device that is the premise thereof.

In addition to the rapier head, the wefting device includes a holding device that holds the tip of the flat yarn supplied from the yarn feeder on the yarn feeding side, and sandwiches the path of the rapier head in the vertical direction to hold the flat yarn. It is a thread guiding mechanism for guiding, and includes a thread guiding mechanism that displaces the flat yarn in a plan view in a direction parallel to the width direction of the rapier head, alone or in cooperation with the rapier head. Further, the rapier head includes a head main body having a thread introduction portion into which the flat thread is introduced at a tip portion, a thread gripping member provided in the thread introduction portion so as to be displaceable in the longitudinal direction of the rapier head, and the head main body. The operated member is displaced in the longitudinal direction and is operated by engaging with the opener on the thread feeding side and the anti-thread feeding side with the operated member connected to the thread gripping member. It is equipped with an operation lever that is displaced in the longitudinal direction. Further, the thread introduction portion in the head body is formed in a form defined by an inner surface of the head body which is U-shaped in a plan view so as to open on one side in the width direction and in the vertical direction. There is. Then, in the rapier head, one of the pair of gripping surfaces for gripping the flat yarn is gripped by the inner side surface of the inner side surface defining the thread introduction portion, which faces the retracting direction of the rapier head. In addition to functioning as a surface, the surface of the thread gripping member facing the one gripping surface functions as the other gripping surface. Then, in the wefting device, the flat yarn is introduced into the yarn introduction portion with the displacement of the flat yarn in the width direction by the yarn guide mechanism at the time of wefting.

Further, in such a wefting device according to the present invention, the rapier head is provided so that the operating lever can swing with respect to the head body in the width direction, and the operating lever swings due to engagement with the opener. The operated member is configured to be displaced in the longitudinal direction by a dynamic operation, and then the operating lever is engaged with the opener on the thread feeding side, and the first engaging portion and the counter-feeding side are said to be engaged. It has a second engaging portion that engages with the opener, and the first engaging portion and the second engaging portion are not engaged with the corresponding opener in the width direction from the head body. It may be configured to project and engage with the corresponding opener on its side surface.

Further, in the wefting device according to the present invention in which the rapier head and the operating lever are configured as such, the operating lever has the first engaging portion on one end side of the swing center and the other end side. The second engaging portion is located on the receding direction side of the first engaging portion in the longitudinal direction, and the first engaging portion is located in the width direction. The engaging portion may be configured so as to project to one side with respect to the head body and the second engaging portion to project to the other side with respect to the head body.

In the wefting device according to the present invention, with respect to the pair of gripping portions (grip surfaces) constituting the portion for gripping the flat yarn in the rapier head, the retreating direction of the rapier head among the inner surfaces defining the yarn introduction portion in the head body is defined. The facing inner surface functions as one of the pair of gripping surfaces (one gripping surface). Therefore, the portion of the head body on which one of the grip surfaces is formed corresponds to one of the pair of grip portions (one grip portion). Further, in the rapier head, the surface of the thread gripping member facing the one gripping surface functions as the other (the other gripping surface) of the pair of gripping surfaces. Therefore, the thread gripping member having the other gripping surface corresponds to the other (the other gripping portion) of the pair of gripping portions. The rapier head is then driven so that only the other grip of the pair of grips is displaced in the longitudinal direction, in other words, the one grip is relative to the rapier head. It is configured to be part of the head body that does not displace.

Therefore, the configuration of the rapier head itself is simpler than the configuration of the conventional device described above, and it is unlikely that the configuration of the rapier head itself adversely affects the advancing / retreating movement of the rapier head at high speed. Further, in the rapier head itself, the operation for gripping the flat yarn is only the displacement of the other gripping portion, which is a simple operation, so that a gripping error is unlikely to occur. As a result, according to the wefting device according to the present invention, the wefting of the flat yarn is stably performed.

Further, in the wefting device according to the present invention, an operation lever having the first engaging portion and the second engaging portion as described above is provided so as to be swingable in the width direction with respect to the head body, and the first If the rapier head is configured so that the operating lever is oscillated and displaced by engaging the engaging portion 1 and the second engaging portion with the corresponding opener on the side surface, a part of the rapier head and the opener are engaged. Problems such as warp breakage that occur as a result of this can be prevented as much as possible.

Specifically, in the conventional device, the first grip portion is attached to the sliding grip piece, and the operating protrusion is provided so as to project upward with respect to the sliding grip piece. Further, the conventional device has a pressing portion (opener referred to as described above) which is fixedly arranged on the thread feeding side and is provided so as to be engaged with the operating protrusion portion as the rapier head advances. However, in the conventional device, the pressing portion is provided at the same position as the position where the rapier head moves forward and backward in the width direction. On top of that, in the conventional device, as the rapier head advances, the operating protrusion and the pressing portion are engaged with each other, and the operating protrusion is relatively pushed toward the rear side by the pressing portion. The grip portion of 1 is displaced to the rear side.

As described above, the conventional device has a configuration in which the operating protrusion provided on the rapier head and the pressing portion provided on the thread feeding side collide with each other on the opposing surfaces in the advancing / retreating direction of the rapier head as the rapier head advances. ing. Therefore, in the conventional device, with the collision, all the forces generated by the collision act on the rapier head as a force toward the rear side (a force opposite to the traveling direction). In the case of a so-called rod rapier in which the driving member for advancing and retreating the rapier head is a rod material, even if such a force acts on the rapier head, the effect on wefting is small. However, in the case of a so-called band rapier in which the driving member for advancing and retreating the rapier head is a band material (rapia band), buckling occurs in the rapier band to which the rapier head is attached as a result of such a force acting on the rapier head. As a result, the posture of the rapier head may be disturbed and the rapier head may be violent. Then, when the rapier head is violent in this way, the rapier head interferes with the warp threads at the time of retreating (at the time of wefting), causing a problem that the warp threads are broken.

Further, there is also a problem that the rapier head traveling at high speed may collide with the pressing portion in front of the pressing portion in a part thereof, and the rapier head may be damaged by the impact.

On the other hand, in the wefting device according to the present invention, if the operation lever is configured as described above, the angle of the surface (engagement surface) that engages with the opener in each engaging portion with respect to the advancing / retreating direction of the rapier head is appropriately set. Therefore, the force acting on the operating lever (rapia head) due to the engagement between the operating lever and the opener is the component force in the width direction (force that swings the operating lever) and the component in the direction opposite to the traveling direction of the rapier head. It will be divided into power. As a result, the force acting on the rapier head (head body) in the direction opposite to the traveling direction is smaller than that of the conventional device configured as described above. Further, if the wefting device is configured so that the opener is displaced from the side toward the rapier head (operation lever) when the rapier head reaches the position where the flat yarn is gripped (the advance limit), the traveling direction with respect to the rapier head. It is possible to eliminate the action of the force in the opposite direction. Therefore, according to the wefting device of the present invention configured as such, it is possible to prevent warp breakage and damage to the rapier head due to the disorder of the posture of the rapier head as much as possible.

Further, in the weaving device according to the present invention, regarding the operation lever, the first engaging portion is located on one end side of the swing center of the operation lever, and the second engaging portion is located on the other end side of the swing center. The second engaging portion is located on the end side and the second engaging portion is located on the retracting direction side of the first engaging portion in the longitudinal direction, and the first engaging portion with respect to the head body in the width direction. By configuring the operation lever so that the second engaging portion projects to the other side with respect to the head body while projecting to one side, the weft thread projecting from the weaving end on the counter-feeding side of the woven fabric. The length of the end (bundle ear) can be shortened.

Specifically, the length of the tuft ear on the anti-feeding side depends on the time when the rapier head (thread gripping mechanism) releases the grip of the flat thread when the rapier head retracts to the anti-feeding side in the wefting process. .. That is, if the grip is released earlier, the length of the tuft ear becomes shorter, and if it is slower, the length of the tuft ear becomes longer. Then, the grip is released by the engagement between the operating lever in the rapier head during retreat (during wefting) and the opener on the anti-thread side. Therefore, in order to shorten the tuft ears, it is necessary to arrange the opener on the counter-feeding side as close as possible to the weaving end on the counter-feeding side of the woven fabric in the weaving width direction. However, in the loom, a sley supporting the reed or the like exists beyond the existence range of the woven fabric in the weaving width direction, and the sley extends to the outside of the woven fabric from the weaving end on the non-feeding side. Therefore, the opener is arranged so as to be separated from the weaving end on the anti-feeding side beyond the existence range of the sley so that the opener or the portion supporting the opener does not interfere with the sley.

By the way, on the yarn feeding side, a cutter device or the like for cutting the flat yarn is provided near the weaving end. Therefore, the opener and the yarn guide mechanism on the yarn feeding side are arranged outside the range of existence of the cutter device and the like in the weaving width direction with respect to the woven fabric. However, as the position of the thread guide mechanism is farther from the cutter device, the length of the tip side portion of the flat yarn becomes longer than the gripping position by the rapier head. Therefore, the thread guide mechanism should be as close to the cutter device side as possible. Provided. Then, the arrangement of the opener on the yarn feeding side is also determined accordingly.

Therefore, the operation lever is configured so that the position of the first engaging portion that engages with the opener on the thread feeding side is closer to the tip end side of the rapier head. On top of that, for example, if the first engaging portion is configured to engage with the opener even on the anti-thread side to swing the operating lever, the second engaging portion is positioned as described above when the rapier head is retracted. The swing operation of the operation lever (the above-mentioned release of the grip) is not performed until the engaging portion of No. 1 reaches the position of the opener on the anti-thread side. Therefore, in that configuration, the tuft ears on the anti-thread side become long.

On the other hand, by configuring the operation lever so as to have the second engaging portion provided as described above, the first engaging portion is in the position of the opener on the anti-thread side when the rapier head is retracted. Since the operation of releasing the grip of the flat yarn is performed before reaching, the tuft on the anti-feeding side can be shortened. Incidentally, the long tuft ears lead to excessive consumption of the flat yarn used as the weft. When the flat yarn is a yarn using carbon fibers, the yarn itself is expensive, so such excessive consumption is not preferable in terms of the manufacturing cost of the woven fabric. On the other hand, if the tuft ears can be shortened as described above, the manufacturing cost of the woven fabric can be reduced as much as possible.

Partial sectional plan view which shows the rapier head in one Embodiment of the wefting apparatus by this invention. The perspective view which shows the rapier head in one Embodiment of the wefting apparatus by this invention. The operation explanatory drawing for demonstrating the opening operation on the thread feeding side of the gripping mechanism of a rapier head in one Embodiment of the wefting apparatus according to this invention. The operation explanatory drawing for demonstrating the opening operation on the anti-thread side of the gripping mechanism of a rapier head in one Embodiment of the wefting apparatus according to this invention. The front view which shows the yarn feeding mechanism including the yarn guide mechanism in one Embodiment of the wefting apparatus by this invention. The front view which shows the yarn feeding mechanism including the yarn guide mechanism in one Embodiment of the wefting apparatus by this invention. The front view which shows the holding device of the thread guide mechanism in one Embodiment of the wefting device by this invention. The operation explanatory drawing for demonstrating the operation of the yarn feeding mechanism including the yarn guiding mechanism in one Embodiment of the wefting apparatus according to this invention. The operation explanatory drawing for demonstrating the operation of the yarn feeding mechanism including the yarn guiding mechanism in one Embodiment of the wefting apparatus according to this invention. The plan view which shows roughly the peripheral part of the wefting apparatus of the rapier loom to which the wefting apparatus by this invention is applied. The plan view which shows the rapier head in another embodiment of the wefting apparatus according to this invention. Partial sectional plan view which shows the other embodiment of the main part of the rapier head in one embodiment of the wefting device according to the present invention. Partial sectional plan view which shows the other embodiment of the main part of the rapier head in one embodiment of the wefting device according to the present invention.

Hereinafter, an embodiment (example) of the wefting device in the rapier loom according to the present invention will be described with reference to FIGS. 1 to 10.

FIG. 10 schematically shows a one-sided rapier loom that is premised on the present invention. The one-sided rapier loom is a rapier loom that weaves using a single rapier head 10. In this embodiment, the wefting device 1 including the rapier head 10 is a so-called band rapier type wefting device in which a band material (rapia band) is used as a driving member used for driving the rapier head 10 to move forward and backward (advancing / retreating drive). .. Therefore, in addition to the rapier head 10, the wefting device 1 includes a rapier band 21 to which the rapier head 10 is attached, and a band wheel 23 that is driven forward and reversely in a predetermined angle range so as to advance and retreat the wound rapier band 21. It is equipped with a drive device including. Then, in the wefting device 1, the band wheel 23 is rotationally driven, so that the rapier head 10 is driven forward and backward via the rapier band 21. Note that FIG. 10 shows a state in which the reed R is located at the last retracted position, and as shown in the drawing, the traveling position in which the rapier head 10 is driven to advance and retreat in this way is set in the front-rear direction of the loom (of the warp T). Regarding (extending direction), it is set near the last retreat position of the reed R.

Further, the wefting device 1 includes a yarn feeding mechanism 25 for supplying the weft yarn Y to the rapier head 10 at the time of wefting. However, the weft yarn Y, which is the subject of the present invention, is a flat yarn formed in a tape shape, for example, a yarn made of carbon fibers. On that basis, in the wefting device 1, the standby position of the rapier head 10 on which the rapier head 10 is arranged is opposite to the yarn feeding side on which the yarn feeding mechanism 25 is provided in the weaving width direction. The drive device and the like are arranged so as to be set on the side.

Then, in the wefting device 1, the rapier head 10 is driven to move forward during the wefting period in which the reed R is located at the last retracted position, and the rapier head 10 is driven through the opening formed by the warp thread T. Travel toward the thread feeder side. Next, as the rapier head 10 reaches the position of the yarn feeding mechanism 25 on the yarn feeding side, the weft (flat yarn) Y is supplied to the rapier head 10. After that, the rapier head 10 is in a state of gripping the supplied flat thread Y, and in that state, is driven backward toward the standby position described above. As a result, the flat yarn Y is inserted (wefted) into the opening of the warp yarn T, and the flat yarn Y is reed by the reed R before weaving to form a woven fabric.

Figures 1 and 2 show the rapier head 10 in the present embodiment based on the present invention. The rapier head 10 is mainly composed of the head main body 11, and the head main body 11 is fixed to the rapier band 21 by the mounting member 27 so that the rapier head 10 is attached to the rapier band 21. The head body 11 has a thin plate-shaped base portion 11a and a head portion 11b formed so as to converge toward the cutting edge 11g. The head body 11 is integrally formed so that the base portion 11a and the head portion 11b are separated from each other in the longitudinal direction of the rapier head 10 and are connected by the connecting portion 11c.

Therefore, the head body 11 is a space between the base portion 11a and the head portion 11b, and one side of the rapier head 10 in the width direction (direction orthogonal to the longitudinal direction in a plan view) is closed by the connecting portion 11c. It has a space portion 11d. That is, the head main body 11 has three inner side surfaces, that is, an end surface 11b1 of the head portion 11b facing the base portion 11a side, a side surface of the base portion 11a facing the head portion 11b side, and a side surface of the connecting portion 11c facing the inside of the head main body 11. The space portion 11d defined by the above is provided in the portion on the tip end side including the head portion 11b. The space portion 11d is open on one side in the width direction and in the vertical direction in the portion on the tip end side thereof, and has a U-shaped shape in a plan view. On top of that, the space portion 11d functions as a yarn introduction portion in the head body 11 into which the flat yarn Y is introduced, as will be described later.

In the head body 11, the head portion 11b converges toward the cutting edge 11g in the width direction and the thickness (height) direction of the rapier head 10, and the cutting edge 11g is a connecting portion from the center in the width direction. It is formed in a shape so as to be located on the opposite side of 11c. Further, the head main body 11 is a side wall formed so as to rise from the base portion 11a, and is opposite to the connecting portion 11c in the width direction on the tip end side (head portion 11b side in the longitudinal direction) of the base portion 11a. The side wall 11e formed on the side and the rear end side of the base portion 11a (the side opposite to the head portion 11b side in the longitudinal direction, hereinafter also simply referred to as the "rear end side") face the width direction. It has a pair of side walls 11f and 11f formed as described above. The side walls 11e and 11f are also integrally formed with the base portion 11a. Incidentally, the side walls 11f and 11f are connected by ribs, and the above-mentioned mounting member 27 fixes the head body 11 to the rapier band 21 at a portion surrounded by the pair of side walls 11f and 11f and the ribs. Further, a guide portion 12 for restricting the position of the rapier head 10 on the anti-thread feeding side is attached to one outer surface of the pair of side walls 11f and 11f as described later.

Further, the rapier head 10 has a yarn catch 13 for gripping the flat thread Y introduced into the thread introduction portion 11d of the head main body 11 in cooperation with the head portion 11b. The yarn catch 13 is provided in the head body 11 so as to be displaceable in the longitudinal direction. Therefore, the rapier head 10 has a guide body 14 for guiding the displacement of the yarn catch 13.

The guide body 14 is formed of a block-shaped member, and has a rectangular guide groove 14a for guiding the displacement of the yarn catch 13. The guide body 14 is fixed to the base portion 11a of the head main body 11 with a plurality of screw members in a direction in which the extending direction of the guide groove 14a coincides with the longitudinal direction.

The yarn catch 13 has a guide portion 13a which is a portion guided by the guide groove 14a of the guide body 14. The guide portion 13a is formed in a plate shape. Further, the guide portion 13a has a rectangular shape when viewed in the plate thickness direction, and the vertical dimension, which is the direction of the long side thereof, is sufficiently larger than the horizontal dimension, which is the direction of the short side. It is formed in a shape. On top of that, the groove width of the guide groove 14a in the guide body 14 is substantially the same as the lateral dimension of the guide portion 13a in the yarn catch 13 so that the displacement of the yarn catch 13 in the vertical direction can be guided. Is formed in.

Further, the yarn catch 13 has a grip portion 13b which is a portion for gripping the flat yarn Y and a receiving portion 13c which receives an urging force for gripping the grip portion 13b, and the grip portion 13b is used in the vertical direction of the guide portion 13a. It is formed so as to have the receiving portion 13c on the other end side of the guide portion 13a as well as having the receiving portion 13c on one end side of the above. The yarn catch 13 is a member in which the guide portion 13a, the grip portion 13b, and the receiving portion 13c are integrally formed.

With respect to the yarn catch 13, the receiving portion 13c is formed so as to protrude to one side of the guide portion 13a in the lateral direction when viewed in the plate thickness direction. Therefore, the yarn catch 13 has a substantially L shape in the guide portion 13a and the receiving portion 13c when viewed in the plate thickness direction. Further, the receiving portion 13c has a dimension larger than that of the guide portion 13a in the plate thickness direction, is formed flush with the guide portion 13a on one side, and the other side protrudes from the guide portion 13a. It is formed like this.

Further, the grip portion 13b has the same dimensions as the guide portion 13a in the plate thickness direction, and is formed so as to project from the guide portion 13a on both sides in the lateral direction. Incidentally, the grip portion 13b is formed so that the dimension in the vertical direction is the same as the dimension in the horizontal direction of the guide portion 13a. Further, the lateral dimension of the grip portion 13b is substantially the same as the width direction dimension of the inner side surface (end surface 11b1) defining the thread introduction portion 11d in the head portion 11b of the head main body 11. It is formed.

Further, the yarn catch 13 has an engaging portion 13d formed between the guide portion 13a and the receiving portion 13c. More specifically, the yarn catch 13 protrudes toward the guide portion 13a from a portion of the receiving portion 13c that protrudes from the guide portion 13a in the plate thickness direction within the range of the guide portion 13a in the lateral direction. It has an engaging portion 13d formed in. Further, the engaging portion 13d is formed so that its protruding end forms an arc surface. In the yarn catch 13, the engaging portion 13d is also integrally formed with the guide portion 13a and the receiving portion 13c.

The yarn catch 13 is provided in the head body 11 in a state in which the guide portion 13a is loosely fitted in the guide groove 14a of the guide body 14 so as to be displaceable in the longitudinal direction. However, in such a provided state, in the yarn catch 13, the grip portion 13b is located closer to the head portion 11b than the guide body 14 in the longitudinal direction, and the engaging portion 13d is the guide portion in the plate thickness direction. It is oriented so as to be located closer to the base portion 11a than 13a. Further, in the state where the yarn catch 13 is provided in such a state, the position of the grip portion 13b coincides with the position of the end surface 11b1 of the head portion 11b in the width direction (the grip portion 13b is the end surface 11b1 of the head portion 11b). They are arranged so that they are completely opposed to each other). In other words, the guide body 14 is provided so as to be able to guide the guide portion 13a of the yarn catch 13 at such a position in the width direction.

Regarding the configuration of the yarn catch 13, the grip portion 13b functions as a portion for gripping the flat yarn Y in cooperation with the head portion 11b of the head body 11 as described later. Therefore, the grip portion 13b corresponds to the thread gripping member referred to in the present invention. Further, the portion where the L-shaped guide portion 13a and the receiving portion 13c are combined as described above is provided in the head body 11 so as to be displaceable in the longitudinal direction and becomes a portion connected to the thread gripping member. There is. Therefore, the portion where the guide portion 13a and the receiving portion 13c are combined corresponds to the operated member referred to in the present invention. That is, in the present embodiment, the thread gripping member and the operated member referred to in the present invention are integrally formed, and they are included in a single member (yarn catch 13). The engaging portion 13d described above is a part of the member to be operated.

Further, the rapier head 10 includes a spring member for urging the yarn catch 13 arranged in the head main body 11 as described above toward the head portion 11b side of the head main body 11 in the longitudinal direction. More specifically, in the head main body 11, a spring receiving member 15b is provided on the base portion 11a on the rear end side of the guide body 14 in the longitudinal direction and at a distance from the guide body 14. The spring receiving member 15b is attached to the head main body 11 by a holder 15c fixed to one of the pair of side walls 11f and 11f of the head main body 11 with a screw member. Then, in the head main body 11, compression springs 15a (two in the illustrated example) are arranged between the spring receiving member 15b and the receiving portion 13c of the yarn catch 13 arranged as described above.

Due to this configuration, in the rapier head 10, the yarn catch 13 receives the spring force of the compression spring 15a at the receiving portion 13c and is urged toward the head portion 11b in the head main body 11. Therefore, the rapier head 10 has a grip portion 13b of the yarn catch 13 (more specifically, an end surface 13b1 of the grip portion 13b facing the head portion 11b) unless a force toward the rear end side acts on the yarn catch 13. It is in a state of being pressed against the end surface 11b1 of the head portion 11b (pressed state).

Then, in the rapier head 10, the flat thread Y introduced into the thread introduction portion 11d is gripped by the grip portion 13b of the yarn catch 13 and the head portion 11b of the head main body 11 which are in such a pressed state. Therefore, in the rapier head 10, a gripping mechanism for gripping the flat yarn Y is configured by the gripping portion 13b and the head portion 11b, and the end surface 13b1 of the gripping portion 13b and the end surface 11b1 of the head portion 11b are in the present invention. It becomes a pair of gripping surfaces. That is, with respect to the pair of gripping surfaces in the rapier head 10 of the present embodiment, the end surface 13b1 of the gripping portion 13b in the yarn catch 13 functions as one of the gripping surfaces, and the end surface 11b1 of the head portion 11b in the head body 11 is the other. Functions as a gripping surface.

Incidentally, in the illustrated configuration, the spring receiving member 15b and the receiving portion 13c of the yarn catch 13 are formed with holes for receiving a part of the compression spring 15a. Further, the head portion 11b has a groove in the end surface 11b1 so as to slightly accept a part of the grip portion 13b on the end surface 13b1 side in a state where the grip portion 13b in the yarn catch 13 is pressed and contacted as described above. It is formed. The end surface 11b1 of the head portion 11b is a surface facing the base portion 11a side in the head main body 11 as described above, but is a surface facing the backward direction in the direction of the advance / retreat movement of the rapier head 10. That is, the end surface 11b1 is one of the inner surfaces that define the thread introduction portion 11d as described above, and is the inner surface that faces the receding direction of the rapier head 10.

Further, the rapier head 10 provides an operation lever 17 for displacing the yarn catch 13 (guide portion 13a and receiving portion 13c as operated members) provided in the head body 11 in the longitudinal direction in the above-mentioned state. I have. The one-sided rapier loom, which is premised on the present invention, is also provided with openers on the yarn feeding side and the counter yarn feeding side for operating (opening) the gripping mechanism in the rapier head 10 as in the case of a general rapier loom. (Details of the opener will be described later). Then, the operation lever 17 in the rapier head 10 of the present embodiment engages with the opener on the yarn feeding side in order to open the gripping mechanism on the yarn feeding side (displace the yarn catch 13 (grip portion 13b)). Separately from the first engaging portion 17a and the first engaging portion 17a, a second engagement with the opener on the anti-thread side to open the gripping mechanism on the anti-thread side. It has a joint portion 17b. The details of the operation lever 17 are as follows.

The operation lever 17 is provided on the rapier head 10 so as to be swingably supported in the width direction with respect to the head main body 11. Therefore, the operation lever 17 has a support portion 17c which is a portion supported by the base portion 11a of the head main body 11. However, the support portion 17c is formed to have a substantially rectangular shape and a shape (substantially rectangular shape) in which a part of the rectangle is cut out when viewed in the thickness direction. Further, the dimensions of the support portion 17c formed in such a substantially rectangular shape in the long side direction are substantially the same as the dimensions of the portion supporting the operation lever 17 (support portion 17c) in the base portion 11a in the width direction. It has become.

Further, the operation lever 17 has a first engaging portion 17a and a second engaging portion 17b as described above. The first engaging portion 17a supports the operating lever 17 in the long side direction with respect to the long side direction and the direction orthogonal to the long side direction (short side direction) when the operation lever 17 is viewed in the thickness direction. It is formed so as to extend in the short side direction from a portion on one end side of the portion 17c. Further, the second engaging portion 17b is the first engaging portion in the short side direction from the other end side portion of the support portion 17c in the long side direction when the operating lever 17 is viewed in the thickness direction thereof. It is formed so as to extend to the side opposite to the portion 17a. Therefore, the operation lever 17 has a substantially Z shape as a whole in its plan view. However, the first engaging portion 17a is formed in the operating lever 17 so as to have a curved shape in the intermediate portion and a slightly obtuse angle in the extending direction with respect to the supporting portion 17c. Further, the second engaging portion 17b is also formed in the operating lever 17 so that its extending direction is slightly obtuse with respect to the supporting portion 17c.

The operation lever 17 is rotatably supported with respect to the head body 11 (base portion 11a) on one end side of the support portion 17c in the long side direction. As a result, the operation lever 17 is provided so as to be swingable in the width direction with respect to the head main body 11. In the operation lever 17, the first engaging portion 17a is located on the head portion 11b side of the head body 11 with respect to the supporting portion 17c, and the second engaging portion 17b is located on the rear end side with respect to the supporting portion 17c. It is supported with respect to the head body 11 so as to be located. As a result, in the rapier head 10, the first engaging portion 17a and the second engaging portion 17b of the operating lever 17 are located at different positions in the longitudinal direction and with respect to the first engaging portion 17a. The second engaging portion 17b is located on the rear end side (reverse direction side when the rapier head 10 is driven forward and backward).

Further, regarding the support position of the operation lever 17 on the base portion 11a (the swing center of the operation lever 17), the support position is the guide body 14 on the rear end side of the guide body 14 in the longitudinal direction. It is set in the vicinity of. Further, as for the support position, the position of the support portion 17c and the position of the base portion 11a substantially coincide with each other in the width direction when the operation lever 17 is in a state where the long side direction substantially coincides with the width direction. (The support portion 17c and the base portion 11a overlap almost entirely in a plan view).

Further, regarding the positional relationship between the operation lever 17 in the head body 11 and the yarn catch 13 arranged as described above, the positional relationship is lower than the guide portion 13a in the yarn catch 13 in the vertical direction. The operating lever 17 is located at the same height as the engaging portion 13d. Further, the positional relationship is such that the engaging portion 13d of the yarn catch 13 is located on the rear end side of the support portion 17c of the operating lever 17 in the longitudinal direction.

Due to the support position of the operating lever 17 and the positional relationship between the operating lever 17 and the yarn catch 13, in the head portion 11b, between the guide body 14 and the engaging portion 13d of the yarn catch 13 in the longitudinal direction. The support portion 17c of the operation lever 17 is located at the same position.

Incidentally, the support portion 17c in the operation lever 17 is formed in a shape such that a part of the rectangle is cut out as described above, and specifically, it is a portion on the side facing the engaging portion 13d. The portion facing the engaging portion 13d in the long side direction and the peripheral portion thereof are slightly cut out in a substantially arc shape. Therefore, the dimension of the support portion 17c in the short side direction is slightly smaller than that of the other portions.

Further, the yarn catch 13 receives the urging force toward the head portion 11b side by the compression spring 15a as described above, and in the normal state of the rapier head 10 in which the operating lever 17 is not engaged with the above-mentioned opener, the yarn catch 13 is subjected to the urging force toward the head portion 11b side. The grip portion 13b is in contact with the head portion 11b of the head main body 11. That is, in the normal state, the yarn catch 13 is in a state where the grip portion 13b is pressed against the head portion 11b in the longitudinal direction and the position is held by the compression spring 15a (the urging force). It has become. Along with this, the engaging portion 13d is also in a position corresponding to the position of the yarn catch 13, and the position is held by the urging force in the longitudinal direction. However, the position of the engaging portion 13d in that state in the longitudinal direction is substantially the same as the dimension of the notched portion of the support portion 17c in the operating lever 17 in the short side direction with respect to the guide body 14 ( The positions are separated by a distance (slightly larger).

Therefore, the operation lever 17 rotatably supported as described above is fixed to the engaging portion 17d and the head body 11 (base portion 11a) whose positions in the longitudinal direction are held by the urging force. The rotation of the guide body 14 is restricted by the arranged guide body 14. Further, in that state, the operation lever 17 is in a state in which the long side direction of the support portion 17c substantially coincides with the width direction. Along with this, a part of the first engaging portion 17a and the second engaging portion 17b formed so as to form an obtuse angle with respect to the support portion 17c in the operation lever 17 as described above is the head main body 11 ( It is in a state of protruding from the base portion 11a) in the width direction.

Further, in the rapier head 10 configured as described above, the lid member 11h is attached to the base portion 11a of the head main body 11. The lid member 11h is provided so as to cover each member provided on the base portion 11a in a plan view in the range from the rib to the thread introduction portion 11d in the longitudinal direction. Therefore, in the rapier head 10, the guide body 14, the spring receiving member 15b and the compression spring 15a, the guide portion 13a and the receiving portion 13c in the yarn catch 13, and a part of the operating lever 17 are the base portion 11a in the vertical direction. It is in a state of being arranged in the space between the lid member 11h and the lid member 11h.

Next, also using FIGS. Will be described.

FIG. 3 shows the opening operation on the yarn feeding side. However, FIG. 3 shows a state in which the rapier head 10 reaches the most advanced position after the rapier head 10 is driven forward from the above-mentioned standby position toward the yarn feeding side and travels in the opening of the warp yarn T. .. Further, the most advanced position is a position corresponding to the position of the yarn feeding mechanism 25 provided on the yarn feeding side shown in FIG. Further, the rapier head 10 travels in parallel with the weaving width direction as it is driven forward and backward as described above. That is, in the wefting device 1, the rapier head 10 is driven forward and backward in a direction in which the longitudinal direction thereof coincides with the weaving width direction. Therefore, the width direction of the rapier head 10 coincides with the front-rear direction (extending direction of the warp T) of the loom.

The thread feeding mechanism 25 includes an opener 31 on the thread feeding side as shown in the drawing. The opener 31 is provided at a position where it can face the first engaging portion 17a of the operating lever 17 in the rapier head 10 in the state of reaching the most advanced position in the vertical direction and the weaving width direction. ing. That is, the opener 31 reaches the most advanced position in the weaving width direction at the same height position as the height position of the operating lever 17 (first engaging portion 17a) of the rapier head 10 on the loom in the vertical direction. It is provided so as to overlap the position with the first engaging portion 17a of the rapier head 10 in the mounted state. However, in the wefting device 1 of the present embodiment, the opener 31 on the yarn feeding side is provided so as to approach and separate from the operating lever 17 of the rapier head 10 in the state where it has reached the most advanced position.

Specifically, the thread feeding mechanism 25 includes a support lever 33 that supports the opener 31. The support lever 33 is provided so as to be supported by a frame (not shown) of the loom by an appropriate support means or the like. Further, the support lever 33 is provided so as to be swingable in a horizontal plane with a fulcrum 33a set at a position substantially intermediate in the longitudinal direction of the support lever 33 as a swing center. On top of that, the opener 31 is provided so as to be attached to one end of the support lever 33 with respect to the fulcrum 33a. Then, the opener 31 can face the operating lever 17 in the rapier head 10 in the front-rear direction as described above in a state of being attached to the support lever 33 as described above. More specifically, the opener 31 faces the traveling position side of the rapier head 10. On the side surface, the arrangement is such that it can face the side surface of the first engaging portion 17a (the outer surface intersecting the width direction, hereinafter referred to as the "first engaging surface") 17a1.

Further, the support lever 33 is connected to a drive mechanism (not shown) for swinging the support lever 33 at the end on the other end side with respect to the start point 33a. The swing drive of the support lever 33 by the drive mechanism is an action in which the opener 31 attached to the support lever 33 is set as an engagement position of the operation lever 17 on the rapier head 10 with the first engagement portion 17a. The displacement is performed between the two positions of the non-acting position, which is a position separated from the first engaging portion 17a in the front-rear direction. In this way, the opener 31 approaches and separates from the operation lever 17 (first engaging portion 17a) by the swingable support lever 33 and the drive mechanism that swings and drives the support lever 33. It is provided to do so. However, the opener 31 is in a state of being located at the non-acting position except at the time when the opening operation is performed.

In the wefting, the rapier red 10 is driven forward as described above and is positioned at the most advanced position (hereinafter, also referred to as "the most advanced state"). When the rapier head 10 reaches the most advanced position, as shown in FIG. 3A, the opener 31 is in a state of being located at the non-acting position, and the first engagement lever 17 of the operation lever 17 in the rapier head 10 is engaged. It is in a state of facing the first engaging surface 17a1 in the joint portion 17a. In that state, the support lever 33 is oscillated by the drive mechanism. As a result, the opener 31 is displaced (approached) in the front-rear direction from the non-acting position toward the acting position, that is, toward the first engaging portion 17a, and the first engaging portion It is in a state of being engaged with the first engaging surface 17a1 in 17a. Then, when the opener 31 is displaced to the action position, the first engaging portion 17a is pushed toward the inside of the rapier head 10 by the opener 31, and the operating lever 17 swings in the clockwise direction in FIG. As a result, as shown in FIG. 3B, the operation lever 17 is in a state of swinging by a predetermined amount.

As the opener 31 engages with the operating lever 17 as described above, the rapier head 10 receives the force in the front-rear direction by the opener 31. Therefore, the thread feeding mechanism 25 of the present embodiment includes a first regulating member 35 for preventing (regulating) the rapier head 10 from being displaced in the front-rear direction by receiving such a force. The first regulating member 35 is provided at a position opposite to the side of the opener 31 with respect to the rapier head 10 in the front-rear direction so as to be close to the side portion of the rapier head 10 in the most advanced state of the rapier head 10. Has been done. Further, the first regulating member 35 is provided at a position facing the side wall 11e of the head main body 11 in the most advanced state of the rapier head 10 in the front-rear direction in the weaving width direction. Therefore, even if the rapier head 10 receives the above-mentioned force by the opener 31, the force is received by the first regulating member 35 via the side wall 11e of the head main body 11, so that the displacement of the rapier head 10 in the front-rear direction is caused. It is regulated by the first regulating member 35.

When the operation lever 17 is swung as described above by the engagement between the opener 31 and the first engaging portion 17a, the operating lever 17 is rotatably supported with respect to the head body 11 on one end side thereof as described above. The support portion 17c of the operating lever 17 is rotated around the support position toward the rear end side in the longitudinal direction. As a result, the yarn catch 13 including the engaging portion 13d facing the supporting portion 17c at a position close to the supporting portion 17c in the longitudinal direction is pushed by the supporting portion 17c at the engaging portion 13d, and the compression spring 15a is attached. It displaces toward the rear end side against the force. As a result, the grip portion 13b in a state of being pressed against the head portion 11b in the head body 11 is displaced toward the rear end side, and the head portion 11b and the thread grip portion 13b are displaced in the thread introduction portion 11d. A gap is formed between the two. That is, the gripping mechanism of the rapier head 10 is opened (the opening operation is performed).

Further, FIG. 4 shows the opening operation on the anti-thread feeding side. However, in FIG. 4, (a) is after the rapier head 10 is driven backward from the state where it is located at the most advanced position toward the above-mentioned standby position on the counter-feeding side and travels in the opening of the warp T. , Indicates a state located immediately before the standby position. Further, (b) refers to a state in which the rapier head 10 is further retracted from the state of (a) and reaches the standby position (a state in which the rapier head 10 is located in the standby position, hereinafter also referred to as a "standby state"). Shown.

In the wefting device 1, an opener 41 on the counter-feeding side as shown in the figure is fixedly provided at the standby position on the counter-feeding side. More specifically, the wefting device 1 includes a band guide 29 that guides the running of the rapier band 21 on the anti-thread side. Further, the band guide 29 is fixedly provided with respect to the frame of the loom on the anti-thread feeding side thereof. On top of that, the opener 41 is provided so as to be attached to the band guide 29. The opener 41 has a substantially rectangular shape in a plan view, and its length dimension (dimension in the direction of the long side of the rectangle) is sufficiently larger than the width dimension (dimension in the direction of the short side of the rectangle). It is formed to form a shape. The opener 41 is provided so that the direction of its long side coincides with the weaving width direction.

The opener 41 is provided at the same height position as the height position of the second engaging portion 17b of the operation lever 17 on the rapier head 10 on the loom in the vertical direction. Further, the opener 41 is provided so that its inner side surface (side surface on the traveling position side of the rapier head 10) 41a is located close to the head body 11 (side wall 11e) of the rapier head 10 in the front-rear direction. There is.

On top of that, the opener 41 has its warp T at a position where the second engaging portion 17b of the operating lever 17 reaches before the rapier head 10 driven backward as described above reaches the standby position in the weaving width direction. It is provided so that the end face 41b on the side of is located.

As shown in the figure, in the present embodiment, in the standby state of the rapier head 10, the end surface 41b thereof is located at substantially the same position as the cutting edge 11g of the rapier head 10 in the weaving width direction. Further, the opener 41 has the length dimension so as to extend to the rear (reverse direction side of the rapier head 10) from the position of the second engaging portion 17b in the rapier head 10 in the standby state. Therefore, in the standby state of the rapier head 10, the opener 41 exists in the weaving width direction from the cutting edge 11 g of the rapier head 10 to the existence range of the portion on the rear end side of the second engaging portion 17b. There is. Incidentally, in the present embodiment, the rapier head 10 and the opener 41 have a second engaging portion 17b in the rapier head 10 in a substantially central portion of the opener 41 in a state where the rapier head 10 is located at the standby position in the weaving width direction. The positional relationship is such that they are located.

Then, according to the configuration and arrangement of such an opener 41, as the rapier head 10 is driven backward and reaches the anti-thread feeding side, the second engaging portion 17b of the operating lever 17 in the rapier head 10 is on the side surface ( The outer surface intersecting the width direction, hereinafter referred to as "second engaging surface") 17b1, engages with the opener 41 (inner side surface 41a).

Further, in the opener 41, the inner side surface 41a is formed so that the side portion of the warp T is inclined outward. That is, the opener 41 is formed so that the outer side surface is formed flat over the entire surface and the width dimension of the end face 41b is smaller than the width dimension of the central portion. Further, the width dimension of the end surface 41b of the opener 41 is such that when the second engaging portion 17b of the rearward-driven rapier head 10 reaches the position of the opener 41, the head body 11 of the rapier head 10 is described above. The size of the second engaging portion 17b protruding from the surface is set so as to engage the inclined surface 41a'on the inner side surface 41a without colliding with the end surface 41b.

As a result, when the second engaging portion 17b reaches the position of the opener 41, the rapier head 10 in the retreating process has its second engaging portion 17b as shown in FIG. 4A. In the engaging surface 17b1, the opener 41 is first engaged with the inclined surface 41a'(more specifically, the portion of the inclined surface 41a'on the end surface 41b side) on the inner side surface 41a. Then, as the second engaging surface 17b1 is displaced along the inclined surface 41a'as the rapier head 10 is further retracted from the time of the first engagement, the second engaging portion 17b (second engaging portion 17b) is then displaced. The engagement point between the engagement surface 17b1) and the side surface 41a (inclined surface 41a') is displaced toward the head body 11 side of the rapier head 10 in the front-rear direction. That is, as the rapier head 10 retracts, in the rapier head 10, the second engaging portion 17b of the operating lever 17 is displaced toward the head body 11 in the width direction. As described above, the inclined surface 41a'in the opener 41 functions as a cam surface that displaces the second engaging portion 17a toward the head body 11 side with the relative displacement with the rapier head 10 in the weaving width direction.

Then, with the displacement of the second engaging portion 17b, the operating lever 17 swings in the clockwise direction in FIG. 4 in the rapier head 10. Further, when the rapier head 10 retracts to a state where the engaging point reaches a flat portion (excluding the inclined surface 41a') on the inner side surface 41a of the opener 41, the second engaging portion 17b is shown in FIG. 4 (b). As shown, almost the entire head body 11 is in the state (the space between the base portion 11a and the lid member 11h), and the operation lever 17 is in a state of swinging by a predetermined amount. Then, as the operation lever 17 is swung in this way, the gripping mechanism in the rapier head 10 is opened, as in the case of the thread feeding side described above.

In the rapier head 10, the displacement amount of the yarn catch 13 toward the rear end side (the amount of opening when the gripping mechanism is opened) corresponds to the amount of swing of the operating lever 17. Then, in the present embodiment, the swing amount of the operating lever 17 due to the engagement between the opener 41 and the operating lever 17 (second engaging portion 17b) on the counter-feeding side as described above is described above. The amount is set to be smaller than the swing amount of the operation lever 17 due to the engagement between the opener 31 and the operation lever 17 (first engaging portion 17a) on the thread feeding side.

Also on the anti-thread side, the rapier head is affected by the force acting on the rapier head 10 when the operating lever 17 (the second engaging surface 17b1 in the second engaging portion 17b) engages with the opener 41. A second regulating member 43 is provided to regulate the 10 from being displaced in the front-rear direction. The second regulating member 43 is composed of a member having a shape similar to that of the opener 41, faces the opener 41 in the front-rear direction, and is arranged at substantially the same position as the opener 41 in the weaving width direction. It is provided in. Further, the position of the inner side surface (the surface facing the opener 41 side) of the second regulating member 43 in the front-rear direction is the outermost side surface (outer side surface) of the guide portion 12 in the rapier head 10 in the width direction. ) Is provided so as to substantially match the position.

Further, in the rapier head 10, the guide portion 12 is provided so that the outer side surface thereof extends from the second engaging portion 17b of the operating lever 17 to the rear end side in the longitudinal direction. Therefore, when the rapier head 10 retracts to the position where the second engaging portion 17b engages with the opener 41 as described above, the inner side surface of the second regulating member 43 on the outer side surface of the guide portion 12 thereof. It will be in a state of being in contact with. As a result, as the operating lever 17 (second engaging portion 17b) engages with the opener 41, even if the force in the front-rear direction acts on the rapier head 10 as described above, the force is second. Since it is received by the regulating member 43 of the above, the displacement of the rapier head 10 in the front-rear direction is regulated by the second regulating member 43.

Incidentally, in a state where the operating lever 17 swings by a predetermined amount as described above due to the engagement between the second engaging portion 17b and the opener 41, the first engaging portion 17a is in the width direction. All of them are located inside the rapier head 10 with respect to the outer side surface of the guide portion 12. That is, in the rapier head 10, the guide portion 12 has a size capable of achieving such a state. Further, as described above, in the rapier head 10, the second engaging portion 17b is located on the rear end side of the first engaging portion 17a in the longitudinal direction. Therefore, the wefting device 1 is configured such that the first engaging portion 17a does not interfere with the second regulating member 43 in the process of retracting the rapier head 10 to the standby position.

Next, based on FIGS. 5 to 9, in the most advanced state of the rapier head 10, the flat yarn Y as a weft is supplied to the rapier head 10 (the flat yarn Y is introduced into the yarn introduction portion 11d of the rapier head 10). ) And its action will be described.

The thread feeding mechanism 25 includes a thread guiding mechanism 50 for introducing the flat thread Y into the thread introducing portion 11d of the rapier head 10. The thread guide mechanism 50 uses the flat yarn Y supplied from the yarn feeding means (not shown) including the yarn feeding body in the yarn introducing portion 11d when the rapier head 10 is in the most advanced state in the weaving width direction. At the position (hereinafter, also referred to as “thread feeding position”), the traveling path P of the rapier head 10 is directed from above to below (the position indicated by the one-point chain line P in FIGS. 5 and 6) in the vertical direction. It is configured to guide the flat thread Y (by sandwiching it).

More specifically, the thread guide mechanism 50 reaches the holding device 51 that holds the flat thread Y below the traveling path P, the guide member 53 that guides the flat thread Y above the traveling path P, and the holding device 51. It includes an induction device 55 for guiding the flat yarn Y toward the head, and a fluid pressure cylinder (for example, an air cylinder) 57 as a driving means for switching the holding device 51 between a holding state and a non-holding state.

The holding device 51 includes a holding body that receives the flat thread Y from above and holds the tip end portion of the flat thread Y. The holding body is configured like a clip-shaped pinch as a whole, and rotates when holding the holding member 51a on the base side, which is a holding base when holding the flat thread Y, and holding the flat thread Y. It includes a holding member 51b on the movable side to be operated. Both of the holding members 51a and 51b are mainly composed of base portions 51a1 and 51b1 formed in a substantially prismatic shape, and are configured to have holding portions 51a2 and 51b2 on one end side of the base portions 51a1 and 51b1 in the longitudinal direction. Has been done.

In the holding members 51a and 51b, the holding portions 51a2 and 51b2 have dimensions larger than those of the base portions 51a1 and 51b1 in the width direction of the holding members 51a and 51b, and the base portions 51a1 and 51b1 are located in the middle portion thereof. It is continuous with. Therefore, each of the holding members 51a and 51b is formed in a T shape when viewed in the thickness direction thereof. On top of that, both holding members 51a and 51b are relatively rotatably combined by the pivot 51c at the mounting portions 51a3 and 51b3 formed in the substantially intermediate portions of the base portions 51a1 and 51b1 in the longitudinal direction thereof. There is. However, in such a connected state, both holding members 51a and 51b face each other in the thickness direction thereof, and the positions of both holding portions 51a2 and 51b2 coincide with each other in the longitudinal direction of the base portions 51a1 and 51b1.

Further, the holding body is a compression spring 51d interposed between the base portions 51a1 and 51b1 at a position opposite to the holding portions 51a2 and 51b2 sides with respect to the mounting portions 51a3 and 51b3 in the longitudinal direction of the base portions 51a1 and 51b1. (Two in the illustrated example). Then, in the holding body, the holding portions 51a2 and 51b2 of both holding members 51a and 51b are pressed against each other by the spring force of the compression spring 51d.

On top of that, the holding device 51 includes a support mechanism 51e for supporting the holding body (holding member 51a on the base side) on the loom. FIG. 7 shows an example of the support mechanism 51e. As shown, the support mechanism 51e includes a support plate 51e1 to which the holding member 51a on the base side is attached. The holding member 51a on the base side is attached to the support plate 51e1 on the side surface of the base portion 51a1 opposite to the side surface facing the holding member 51b on the movable side.

Further, the support mechanism 51e includes a bracket 51e3 that supports the support plate 51e1. The support plate 51e1 is formed by bending the plate material into an L shape, and the holding member 51a on the base side can be attached to the inner surface of the portion on one end side of the bent portion. There is. Further, the bracket 51e3 is formed in an elongated plate shape. The support plate 51e1 is attached to the bracket 51e3 on the outer surface of the portion on the other end side of the bent portion. However, with the support plate 51e1 attached to the bracket 51e3 in this way, the holding member so that the longitudinal direction of the bracket 51e3 and the longitudinal direction of the base 51a1 of the holding member 51a attached to the support plate 51e1 coincide with each other. The 51a is attached to the support plate 51e1. Further, the support plate 51e1 has a shape in which the portion on one end side is extended from the portion on the other end side in the longitudinal direction of the bracket 51e3.

Further, the support mechanism 51e includes a guide mechanism such as an LM guide including a rail 51e6 and a block 51e5 whose displacement is guided by the rail 51e6. Further, the rail 51e6 is supported by an appropriate supporting means or the like with respect to the frame of the loom, and extends in the front-rear direction at the yarn feeding position in the weaving width direction below the traveling path P in the vertical direction. It is fixedly arranged so as to do. On top of that, the bracket 51e3 to which the support plate 51e1 is attached as described above is attached on the block 51e5 in the guide mechanism in a direction in which the longitudinal direction thereof coincides with the vertical direction.

As a result, the base-side holding member 51a attached to the support plate 51e1 and the movable-side holding member 51b combined with the holding member 51a have their bases 51a1 and 51b1 oriented in the vertical direction. It will be provided on the loom in a state of being supported by the support mechanism 51e in the form. In the guide mechanism of the support mechanism 51e, the block 51e5 is allowed to be displaced in the extending direction of the rail 51e6, that is, in the front-rear direction, but is not allowed to be displaced in any other direction. Therefore, the holding member 51a (holding member 51b) supported by the bracket 51e3 and the support plate 51e1 with respect to the block 51e5 is in a fixed arrangement in the weaving width direction.

Then, in such a state of being provided on the loom, both the holding members 51a and 51b are located below the traveling path P as described above. Further, depending on the arrangement of the support mechanism 51e (rail 51e6) on the loom and the positional relationship between the holding member 51a on the base side and the support mechanism 51e (rail 51e6) attached to the support plate 51e1, as described above. The holding member 51a provided on the loom is arranged so that the surface of the holding portion 51a2 facing the movable side holding member 51b is located at the yarn feeding position in the weaving width direction. Therefore, the holding portion 51h in the holding device 51 formed by the holding portions 51a2 and 51b2 in both holding members 51a and 51b being pressed against each other as described above also has the yarn feeding position in the weaving width direction. Located in. Since the support mechanism 51e is supported by the frame of the loom by the guide mechanism as described above, both the holding members 51a and 51b are provided on the loom so as to be displaceable in the front-rear direction. ..

Further, the support mechanism 51e is connected to a drive mechanism (not shown) for displacing the support mechanism 51e in the front-rear direction and, by extension, for displacing both holding members 51a and 51b in the front-rear direction. Therefore, the support mechanism 51e includes a connecting member 51e7, and the connecting member 51e7 is attached to the bracket 51e3. On top of that, the support mechanism 51e is connected to the drive mechanism at the connecting member 51e7. Then, the support mechanism 51e (both holding members 51a, 51b) is displacement-driven by the drive mechanism at a predetermined timing during the wefting period.

Further, the thread guide mechanism 50 also includes a guide member 53 for guiding the flat yarn Y as described above, and the guide member 53 is also supported by the support mechanism 51e. Specifically, the guide member 53 is a roll-shaped (shaft-shaped) member, and is supported by the support plate 51e1 in the support mechanism 51e via the mounting plate 53a and the support arm 53b. The mounting plate 53a is a member obtained by bending a plate material into an L shape, and is mounted on an outer surface of the support plate 51e1 at one end side of the bent portion. However, in the mounted state, the mounting plate 53a is supported so that the portion on the other end side of the bent portion is located above the other end side portion of the support plate 51e1 on the loom. It is attached to 51e1.

Further, the support arm 53b is an elongated plate-shaped member, and extends upward from the other end side portion of the mounting plate 53a on the loom, and is attached to the mounting plate 53a at one end portion in the longitudinal direction thereof. It is attached to the other. On top of that, the guide member 53 is cantilevered at the other end of the support arm 53b. In the state of being supported in this way, the guide member 53 is located above the traveling path P in the vertical direction. That is, the support arm 53b has a length dimension such that the guide member 53 is arranged at such a position. Further, the guide member 53 is arranged on the side opposite to the side of the reed R with respect to the holding portion 51a2 of the holding member 51a on the base side in the weaving width direction.

In this way, the guide member 53 is supported by the support mechanism 51e that supports both the holding members 51a and 51b. Therefore, as both holding members 51a and 51b are displaced and driven in the front-rear direction as described above, the guide member 53 is also displaced in the front-rear direction in the same manner. The displacement drive of both the holding members 51a and 51b and the guide member 53 retreats from the reference position, which is a position overlapping the traveling position of the rapier head 10, and the traveling position of the rapier head 10 to the weaving front side in the front-rear direction. It is done between two positions with the position. Then, both holding members 51a and 51b and the guide member 53 are usually arranged at the reference position. Further, both holding members 51a and 51b and the guide member 53 are in a state of being positioned at the retracted position between the time when the advance drive of the rapier head 10 for wefting is started and the time when the rapier head 10 reaches the most advanced position. Then, when the rapier head 10 reaches the most advanced position and the flat thread Y is introduced into the thread introduction portion 11d, the rapier head 10 is displaced toward the reference position.

The thread guide mechanism 50 also includes a fluid pressure cylinder 57, as described above. The fluid pressure cylinder 57 is a device that switches the holding device 51 between a holding state and a non-holding state. It is a device that switches between a holding state in which the holding portions 51a2 and 51b2 are separated from each other and a non-holding state in which the holding portion 51h is opened.

The fluid pressure cylinder 57 is fixedly arranged with respect to the frame of the loom by an appropriate support means or the like. Further, in the fluid pressure cylinder 57, the pressing body 57b attached to the tip of the piston rod 57a faces the base portion 51b1 of the movable side holding member 51b at the reference position in the front-rear direction in the weaving width direction. It is provided as follows. However, the fluid pressure cylinder 57 is provided so as to face the end portion (lower end portion) of the base portion 51b1 opposite to the holding portion 51b2 side in the longitudinal direction thereof in the vertical direction. Further, the fluid pressure cylinder 57 is in an operating state (a state in which the piston rod 57a is advanced) while the pressing body 57b is separated from the holding member 51b in a non-operating state (a state in which the piston rod 57a is retracted) in the weaving width direction. The pressing body 57b is provided so as to push the lower end portion of the holding member 51b by a predetermined amount.

Therefore, when the fluid pressure cylinder 57 is put into the operating state, the lower end portion of the holding member 51b on the movable side is pushed as described above and is displaced against the spring force of the compression spring 51d. The holding portion 51b2 rotates in a direction away from the holding member 51a around the pivot 51c in which the holding members 51a and 51b are combined. As a result, the holding portion 51a1 of the holding member 51a on the base side and the holding portion 51b2 of the holding member 51b on the movable side are separated from the pressed state (state in FIG. 5) as described above (FIG. 6). State), and the holding portion 51h is in an open state.

Further, as described above, the thread guide mechanism 50 also includes a guidance device 55 that guides the flat yarn Y toward the holding device 51. The guidance device 55 has a guidance plate 55a formed by bending a thin plate at two positions at substantially right angles, as shown in the figure.

Regarding the arrangement of the guide plate 55a, in the weaving width direction, the tip side portion, which is a portion on one end side (tip side) of the bent portion, is the holding portion 51h in the holding device 51. They are arranged so that they are located at substantially the same position. Further, the guide plate 55a is arranged so as to be located at substantially the same position as the position of the holding portion 51h (holding portions 51a2, 51b2) when the holding device 51 is located at the reference position in the front-rear direction. However, the guide plate 55a is provided so that the tip edge (the edge opposite to the bent portion side) 55a1 of the tip end side portion extends horizontally at the lowermost position. Further, the width dimension of the guide plate 55a (dimension in the extending direction of the tip edge 55a1) is substantially the same as the dimension of the holding portions 51a2 and 51b2 in the width direction of the holding members 51a and 51b.

The guide plate 55a is supported by being attached to the bracket 55b in the above arrangement. The bracket 55b is provided above a holding device 51 (specifically, a holding member 51a on the base side) with respect to a support portion (not shown) fixedly provided on the loom so as to extend in the vertical direction. For example, it is attached so as to be displaceable in the vertical direction by a guide mechanism (not shown) similar to the guide mechanism in the support mechanism 51e of the holding device 51. Therefore, the guide plate 55a is provided so as to be displaceable in the vertical direction in the above-mentioned arrangement on the loom.

On top of that, the bracket 55b is connected to a drive mechanism (not shown) for displacing the guide plate 55a in the vertical direction. Then, the guide plate 55a is displaced and driven in the vertical direction by its drive mechanism. In the displacement drive, the guide plate 55a (tip edge 55a1) is positioned above the guide member 53 in the vertical direction, and the tip edge 55a1 of the guide plate 55a holds the holding member 51a in the holding device 51. The guide plate 55a is displaced between the two lower positions below the portion 51a2. Further, the guide plate 55a is arranged in the ascending position in a standby state other than the operation in which the flat thread Y is guided to the holding device 51, and is displaced and driven toward the descending position in the operating state.

The operation of the wefting device 1 configured as described above, particularly the operation of the thread guide mechanism 50 is as follows.

FIG. 5 shows the state at the time when the wefting is completed. The flat yarn Y supplied from the yarn feeding means (yarn feeder) is turned to the traveling path P side by the guide member 53, and is pulled out in the weaving width direction toward the anti-thread feeding side. The wefting device 1 includes a cutting device 26 for cutting the wefted flat yarn Y between the yarn guiding mechanism 50 and the reed R in the weaving width direction. Incidentally, the illustrated cutting device 26 is a cutting device of a type that cuts while sandwiching the flat thread Y, and includes a cutting mechanism including a fixed blade 26a1 and a movable blade 26a2, and a fixed sandwiching body 26b1 and a movable sandwiching body 26b2. It is equipped with a pinching mechanism. The cutting device 26 is configured such that the movable blade 26a2 and the movable holding body 26b2 are integrally displaced in the vertical direction, and the movable blade 26a2 and the movable holding body 26b2 cut the flat thread Y. It is arranged at a position separated upward from the fixed blade 26a1 and the fixed holding body 26b1 except during operation.

When the weaving is completed, the movable blade 26a2 and the movable holding body 26b2 are driven by the cutting device 26 at a predetermined timing from the end of the weaving to the start of the next wefting, and the flat yarn is driven at the position of the cutting device 26. Y is cut off. As a result, the flat yarn Y connected to the yarn feeding means is separated from the wefted flat yarn Y. Further, in that state, the tip end portion of the flat thread Y on the yarn feeding means side is sandwiched between the fixed sandwiching body 26b1 and the movable sandwiching body 26b2, and is held at that position.

In that state, as shown in FIG. 6, the fluid pressure cylinder 57 is activated, and the holding portion 51h in the holding device 51 is opened (the holding portion 51a2 and the holding portion 51b2 are separated from each other) as described above. ). Further, in the guidance device 55, the guidance plate 55a (bracket 55b) located at the ascending position is displacement-driven so as to descend toward the descending position. As a result, the guide plate 55a located above the flat yarn Y connected to the yarn feeding means side first engages with the flat yarn Y at its tip edge 55a1. However, in the cutting device 26, the movable holding body 26b2 is driven upward before the guide plate 55a engages with the flat thread Y, and the flat thread Y formed by the fixed holding body 26b1 and the movable holding body 26b2. It is said that the pinch is released.

By further lowering the guide plate 55a from the time of engagement, the guide plate 55a guides the flat thread Y downward while stroking the surface of the flat thread Y at its tip edge 55a1. Then, when the guide plate 55a reaches the descending position, the flat thread Y has a tip portion thereof in the holding portion 51h (holding portion 51a2 and holding portion 51b2) opened in the holding device 51 as shown in FIG. It will be in the state of being inserted in the space). Then, in that state, the guide plate 55a is displaced and driven toward the ascending position, and the fluid pressure cylinder 57 is put into an inactive state. As a result, in the holding device 51, the holding member 51b on the movable side rotates so that the holding portion 51b2 is displaced toward the holding member 51a (holding portion 51a2) on the base side by the spring force of the compression spring 51d, and the flat yarn Y is sandwiched and held by the holding portion 51a2 and the holding portion 51b2.

Then, in that state, the flat yarn Y is guided (turned) by the guide member 53 located above the travel path P and extends downward, and both holdings provided below the travel path P. The tip side portion is held by the members 51a and 5b. That is, in the thread guide mechanism 50 (holding device 51), the flat yarn Y is in a state of being guided in the vertical direction across the traveling path P after being cut by the cutting device 26 after weaving as described above. NS. Further, in that state, both the holding members 51a and 51b and the guide member 53 in the holding device 51 are located at the reference position overlapping the traveling position of the rapier head 10 into which the flat yarn Y is wefted in the front-rear direction. There is.

When the wefted flat yarn Y is reed by the reed R and the next opening is formed by the warp yarn T, the forward drive of the rapier head 10 for the next wefting is started. Along with this, in the thread guide mechanism 50, the holding device 51 so that both the holding members 51a and 51b and the guide member 53 located at the reference position as described above are displaced toward the retracted position in the front-rear direction. The support mechanism 51e in the above is displaced and driven. As a result, as shown in FIG. 8, both the holding members 51a and 51b and the guide member 53 are positioned at the retracted position deviated from the traveling position of the rapier head 10 to the weaving front side in the front-rear direction. Further, at that time, the opener 31 on the yarn feeding side is in a state of being positioned at the non-acting position by driving the support lever 33 as described above.

Then, when the rapier head 10 reaches the most advanced position with the forward drive, the rapier head 10 receives both holding members 51a and 51b and a guide member 53 (and a guide member 53 and both holding members 51a and 51b) in a plan view. It is in a state of being located between the flat thread Y) guided in the vertical direction and the opener 31. In that state, as described above, the first engaging portion 17a (first engaging surface 17a1) of the operating lever 17 in the rapier head 10 and the opener 31 face each other in the front-rear direction and the rapier head in the weaving width direction. The position of the thread introducing portion 11d in No. 10 and the position of the holding portion 51h in the holding device 51 are in a substantially coincident state.

Then, first, the support lever 33 is oscillated and driven to displace the opener 31 toward the action position, and as shown in the upper figure of FIG. 9, the opener 31 is operated by the operating lever 17 (first engagement) in the rapier head 10. It is in a state of being engaged with the first engaging surface 17a1) of the joint portion 17a. As a result, in the rapier head 10, the opening operation is performed, and the gripping mechanism thereof is opened as described above. The thread introduction portion 11d formed as a space portion in the rapier head 10 (head main body 11) is in a state in which the grip portion 13b of the yarn catch 13 is pressed against the head portion 11b of the head main body 11 as described above (grip mechanism). Is closed), it is closed to the outside. Then, the gripping mechanism in the rapier head 10 is opened as described above (the opening operation is performed), so that the thread introduction portion 11d is opened to the outside.

Next, in the state where the gripping mechanism (thread introduction portion 11d) in the rapier head 10 is opened, in the holding device 51 in the thread guide mechanism 50, both the holding members 51a and 51b and the guide member 53 refer to the reference in the front-rear direction. The support mechanism 51e is displaced and driven so as to be displaced toward the position. Along with this, the portion of the flat yarn Y guided in the vertical direction in the thread guide mechanism 50 is displaced to a position overlapping with the rapier head 10 in the front-rear direction. As a result, the thread introduction in the rapier head 10 in the state where the portion of the flat thread Y (to be exact, the portion of the portion located at the same height position as the rapier head 10 in the vertical direction) is opened as described above. Introduced in section 11d. FIG. 9 shows a state in which the flat yarn Y is introduced into the yarn introduction portion 11d in this way.

Then, when the flat thread Y is introduced into the thread introduction portion 11d of the rapier head 10 in this way, the support lever 33 is oscillated in the direction opposite to the above, and the opener 31 is displaced toward the non-acting position. The opener 31 is again separated from the operating lever 17 (first engaging portion 17a) of the rapier head 10. As a result, in the rapier head 10, the grip portion 13b of the yarn catch 13 is pressed against the head portion 11b of the head body 11 again, and the flat thread Y is gripped by the grip portion 13b and the head portion 11b in the grip mechanism. It will be in the state of being.

Further, in the thread guide mechanism 50, the fluid pressure cylinder 57 is put into an operating state again, and the holding portion 51h in the holding device 51 is opened (a state in which the holding portion 51a2 and the holding portion 51b2 are separated from each other). As a result, the flat thread Y whose tip is held by both holding members 51a and 51b in the holding device 51 is in a state where the holding is released.

Then, after the holding of the flat thread Y by the holding device 51 is released in this way, the backward drive with respect to the rapier head 10 is started, and the rapier head 10 in the state where the flat thread Y is held by the gripping mechanism as described above is in the standby position. Start retreating towards. As a result, the tip of the flat yarn Y is pulled out from the inside of the holding portion 51h (between the holding portion 51a2 and the holding portion 51b2) of the holding device 51, and the portion connected to the yarn feeding means retracts the rapier head 10. The companion is pulled out into the opening of the warp T and wefted. When the tip of the flat thread Y is pulled out from the holding portion 51h, the fluid pressure cylinder 57 is put into an inactive state, and the holding device 51 holds the flat thread Y again (the tip of the flat thread Y is inserted). It will be returned to the previous state and will be ready for the next weft.

Further, when the rapier head 10 reaches the vicinity of the standby position by the backward drive, in the rapier head 10, the operating lever 17 and the second engaging surface 17b1 of the second engaging portion 17b become the opener 41 on the counter-feeding side. It is engaged and released from the gripping mechanism. As a result, the flat thread Y is released from the state of being gripped by the rapier head 10 at its tip. After that, the rapier head 10 retracts to the standby position, so that one wefting is completed.

As described above, in the present embodiment, the wefting device 1 is guided on the yarn feeding side at a position overlapping the traveling position of the rapier head 10 in the front-rear direction with respect to the flat yarn Y and the tip side of the rapier head 10. The configuration is based on the premise that the flat thread Y is introduced into the thread introduction portion 11d of the rapier head 10 in such a manner that the portion does not interfere with the advance of the rapier head 10 toward the most advanced position. Then, in realizing the introduction of the flat thread Y into the thread introduction portion 11d in such an embodiment, the wefting device 1 is different from the conventional device in that the flat thread Y is in the traveling position of the rapier head 10. It is configured to be actively displaced so as to avoid. That is, the weft insertion device 1 is configured to include a thread guide mechanism 50 for realizing such a positive displacement of the flat thread Y.

Therefore, according to the configuration of such a wefting device 1, it is not necessary to configure the rapier head so that one grip portion is displaced and driven as in the conventional device, so that the configuration of the rapier head 10 itself is changed to the conventional one. The configuration can be simpler than that of the device. As a result, the advance / retreat drive of the rapier head 10 at high speed can be stably performed, and the gripping error of the flat thread Y in the rapier head 10 can be reduced as much as possible. However, the conventional device referred to here is one of the portions including one (one grip surface) of the pair of gripping surfaces of the rapier head (the portion of the rapier head on the tip side of the thread introduction portion). This is a device in which the rapier head is configured so that the grip portion) can be displaced and one of the grip portions is displaced and driven as the rapier head advances.

Further, the wefting device 1 of this embodiment is a band rapier type wefting device in which a rapier band 21 is used as a member for driving the rapier head 10 forward and backward as described above. It should be noted that such a band rapier type wefting device has a smaller configuration for advancing and retreating the rapier head including the driving member than the bar rapier type wefting device in which a bar material is used as the driving member. It has become more common because it has been used. On that basis, as described above, in the wefting device 1, the first engaging portion 17a and the second engaging portion 17b of the operating lever 17 are on the side surfaces (first engaging surfaces 17a1, second). It is configured to engage the openers 31 and 41 on the engaging surface 17b2). In particular, in this embodiment, the opener 31 in which the rapier head 10 engages with the operating lever 17 at the most advanced position farthest from the driving device is displaced as described above and engages with the first engaging portion 17a. It is configured to do.

Then, according to the configuration, the rapier head 10 (operation lever 17) is performed at the time of the opening operation performed before the wefting of the flat yarn Y (insertion of the warp yarn T into the opening) during one wefting period. Even if the opener 31 and the opener 31 are engaged with each other, buckling does not occur in the rapier bend 21 accordingly. Therefore, in the wefting of the flat yarn Y performed after the opening operation, problems such as the posture of the rapier head 10 being disturbed do not occur, and the wefting is performed stably.

Further, in the rapier head 10 in the wefting device 1 of the present embodiment, the operation lever 17 operated for the opening operation engages with the opener 31 on the thread feeding side, and the first engaging portion 17a and the counter-feeding thread. It has a second engaging portion 17b that engages with the opener 41 on the side, and the second engaging portion 17b is closer to the rear end side than the first engaging portion 17a in the longitudinal direction of the rapier head 10. It is configured to be located. According to the configuration, for example, in the portion of the operation lever that engages with the opener on the yarn feeding side, the operating lever 17 is the opener on the anti-thread feeding side as compared with the case where the counter-feeding side is also configured to engage with the opener. The timing of engaging with 41 can be accelerated. That is, according to the configuration, it is possible to shorten the period from the time when the retreating rapier head 10 goes out of the opening of the warp yarn T on the counter-feeding side to the time when the opening operation is started. Thereby, the tuft ears on the non-feeding side in the woven fabric can be shortened as much as possible.

Further, in the wefting device 1 of the present embodiment, as described above, the swing amount of the operation lever 17 in the opening operation performed on the anti-thread feeding side is smaller than that in the opening operation performed on the yarn feeding side. That is, the wefting device 1 is configured so that the opening amount of the gripping mechanism in the rapier head 10 on the anti-thread feeding side is smaller than that on the thread feeding side. Regarding the configuration, on the yarn feeding side, the flat yarn Y is introduced into the yarn introduction portion 11d opened by the opening operation. Therefore, in order to eliminate the introduction error, the larger the opening amount is, the larger the opening amount is. preferable. On the other hand, on the anti-feeding side, since the flat yarn Y only needs to be released from the gripping by the gripping mechanism in the rapier head 10, it is not necessary to intentionally increase the opening amount, and the releasing amount may be small. .. Therefore, in the wefting device 1 of the present embodiment, the configuration for swinging the operation lever 17 on the yarn feeding side and the anti-thread feeding side is set as described above.

For example, in the configuration of the present embodiment, when the opening amount on the anti-thread feeding side is to be increased, the rapier head 10 has a second engaging portion of the operating lever 17 which is engaged with the second engaging portion of the present embodiment. Compared to the portion 17b, it is configured to protrude significantly from the head body 11 in the width direction (in a state where it is not engaged with the opener on the anti-thread side). In that case, the opener on the counter-feeding side has an inclined surface on the inner side surface as compared with the opener 41 in the present embodiment in order to correspond to the engagement with the second engaging portion that protrudes so greatly. It is necessary to form the fabric large in the front-rear direction and long in the weaving width direction. In that case, the standby position is set to a position that is farther away in the weaving width direction than the position of the present embodiment described above. As a result, the driving amount until the rapier head 10 reaches the standby position is increased, and the time until one wefting is completed is increased by that amount. On the other hand, according to the configuration of the present embodiment described above, the driving amount can be reduced as much as possible to minimize the time required to complete one wefting.

In the above, one embodiment of the wefting device according to the present invention (hereinafter, referred to as “the above-mentioned embodiment”) has been described, but the present invention is not limited to the above-mentioned embodiment, and the following other examples are described. It is also possible to carry out the embodiment (modification example) of.

(1) Regarding the thread guide mechanism, in the above embodiment, the thread guide mechanism 50 includes a holding device 51 that holds the flat thread Y below the traveling path P, and holds the flat thread Y in the holding device 51. The structure for this purpose (hereinafter, also referred to as “holding structure”) is composed of the holding member 51a on the base side and the holding member 51b on the movable side as described above. Further, the thread guide mechanism 50 of the above embodiment includes a fluid pressure cylinder 57 as a driving means for positively switching the holding device 51 between the holding state and the non-holding state.

However, even when the holding device (holding configuration) in the thread guide mechanism is configured as in the above embodiment, in the present invention, the thread guide mechanism is a driving means (fluid) as in the above embodiment. It does not have to be provided with a pressure cylinder). That is, in the configuration of the thread guide mechanism of the above embodiment, the fluid pressure cylinder 57 can be omitted.

Specifically, in the above embodiment, in the holding configuration, the holding portion 51b2 of the movable side holding member 51b is pressed against the holding portion 51a2 of the base side holding member 51a in the holding device 51 by the compression spring 51d. It is configured. Then, in order to facilitate the insertion of the flat thread Y between the holding portions 51a2 and 51b2 (holding portion 51h), the driving means holds the holding portion 51b2 (holding portion 51b2) so as to separate the holding portion 51b2 from the holding portion 51a2. It is a device that displaces the member 51b). Then, the flat thread Y is inserted between the holding portions 51a2 and 51b2 by downwardly displacing the guidance plate 55a of the guidance device 55 between the holding portions 51a2 and 51b2 as described above. However, when the flat thread Y is inserted between the holding portions 51a2 and 51b2 while guiding the flat thread Y by the guide plate 55a in this way, the holding portion 51h is positively opened by the driving means as described above. Even if the guide plate 55a is not lowered, the guide plate 55a is pushed between the holding portions 51a2 and 51b2 which are in the state of being pressed against each other as described above, and the holding portion 51b2 is displaced by the pushing force. Therefore, it is possible to insert the flat thread Y. Therefore, in the thread guide mechanism, the driving means for the holding device (fluid pressure cylinder 57 in the above embodiment) can be omitted.

(2) Regarding the holding device in the thread guide mechanism, the holding device 51 of the above embodiment is a device in which the holding structure is configured to hold the flat yarn Y by two holding members 51a and 51b. However, the holding device in the thread guide mechanism of the present invention is not limited to the device in which the holding configuration is configured to mechanically hold the flat yarn Y, for example, the holding configuration is such as a suction pipe. The device may be configured to hold the flat yarn Y by the suction airflow. Further, the holding device may be a device in which the holding structure is formed by combining a pair of elastic bodies such as leaf springs. In these cases as well, as described in (1) above, the driving means is omitted in the wefting device (thread guide mechanism).

(3) Regarding the thread guide mechanism, in the above embodiment, the holding configuration (holding portion 51h) in the holding device 51 is provided so as to be displaceable in the front-rear direction, and the driving mechanism for displaceing the holding configuration is a thread. It is included in the guidance mechanism. On top of that, the thread holding mechanism is provided before the rapier head 10 reaches the most advanced position so that the tip end side portion of the rapier head 10 and the flat thread Y do not interfere with each other when the rapier head 10 is advanced toward the most advanced position. A guide member 53 that guides a part of the flat yarn Y in the vertical direction in cooperation with the holding configuration and the holding configuration, and is configured to displace the guide member 53 supported by the holding device 51 in the front-rear direction. Has been done. That is, in the wefting device of the above embodiment, the portion of the flat yarn Y guided in the vertical direction by the thread guide mechanism is moved to the most advanced position of the rapier head 10 due to the holding configuration of the thread guide mechanism and the displacement of the guide member. It is configured to be positively displaced in the front-rear direction before reaching it.

However, in the wefting device according to the present invention, the thread guide mechanism is limited to the one in which the holding configuration for guiding the flat yarn Y in the vertical direction and the guide member are configured to be displaced in the front-rear direction as described above. Instead, the holding configuration and the guide member may be fixedly arranged at a predetermined position (the reference position) in the front-rear direction. However, in that case, the flat thread Y is introduced into the thread introduction portion of the rapier head in cooperation with the guidance of the flat thread Y in the vertical direction by the thread guide mechanism and the forward movement of the rapier head 10. Specifically, the one shown in FIG. 11 can be considered as an example of such a configuration.

In the example shown in FIG. 11, unlike the rapier head 10 in the above embodiment, the leading edge 11g'is located within the range of the connecting portion 11c'in the width direction, that is, the leading edge 11g. The head portion 11b'is formed so that'is located on the connecting portion 11c'side of the thread introducing portion 11d'in the width direction (the side of the thread introducing portion 11d' opposite to the opening in the front-rear direction). ing. Further, although not shown, the holding configuration and the guide member in the thread guide mechanism are fixedly arranged at the reference position as described above in the front-rear direction. Therefore, the flat thread Y is in a state of being guided in the vertical direction at that position. In FIG. 11, Y'is a part of the flat yarn Y that is guided in the vertical direction as described above (hereinafter, also referred to as a "guide portion"), and is referred to as a rapier head 10'in the guide portion. It is a part located at the same height position.

Then, in the configuration shown in FIG. 11, when the rapier head 10'reaches the vicinity of the most advanced position by being driven forward, as shown in (a), the rapier head 10'is the most advanced 11g in the head portion 11b'. It engages with a part Y'of the flat thread Y on the inclined surface of the tip that inclines from'toward the thread introduction portion 11d'. After the engagement, the rapier head 10'further advances, and as shown in (b), the flat yarn Y (partially Y') is guided by the inclined surface of the rapier head 10'in the weaving width direction. In, while being displaced toward the rear end side relative to the rapier head 10', it is displaced toward the weaving front side in the front-rear direction (direction parallel to the width direction).

As described above, the holding configuration of the thread guide mechanism and the position of the guide member in the front-rear direction are fixed. Therefore, the guide portion of the flat thread Y is in a bent state in the engaging portion Y'when viewed from the front due to the displacement of the part Y'that engages with the rapier head 10'as described above.

After that, when the rapier head 10'moves further, the flat thread Y (partly Y') is further displaced as described above, and the flat thread Y (partly Y') is connected to the head portion 11b'in the rapier head 10'in the width direction. Overcome the side edge on the opposite side of the part. However, (c) indicates just before overcoming. Then, when a part Y'overcomes the side edge of the head portion 11b' in this way, the guide portion of the flat yarn Y tries to return from the bent state as described above to the original state by its own tension, thereby. , A part of Y'is displaced in the direction away from the weaving in the front-back direction. As a result, the flat yarn Y (partially Y') is introduced into the yarn introduction portion 11d'in the rapier head 10'.

As described above, in the example shown in FIG. 11, the rapier head 10'reaches the most advanced position in cooperation with the guidance of the flat yarn Y in the vertical direction by the thread guiding mechanism, the configuration of the rapier head 10'and its forward movement. The wefting device is configured so that the flat thread Y is displaced in the front-rear direction in the process and the flat thread Y is introduced into the thread introduction portion 11d'in the rapier head 10'after the displacement.

When the wefting device is configured in this way, the guide portion of the flat yarn Y is in a bent state in the process of being guided to the inclined surface of the head portion 11b'in the rapier head 10'as described above. .. Then, the tension of the guide portion increases with the bending. Therefore, when the wefting device is configured as such, in order to prevent the tension of the guide portion in the flat yarn Y from increasing excessively, the holding device in the yarn guide mechanism has the holding configuration described above. It is desirable that the device is configured to hold the flat yarn Y by the suction airflow as described above.

(4) Regarding the thread gripping member and the operated member in the rapier head, in the above embodiment, the rapier head 10 has a yarn catch 13, the grip portion 13b of the yarn catch 13 corresponds to the thread gripping member, and the guide portion 13a. The portion in which the receiving portion 13c and the receiving portion 13c are combined corresponds to the operated member. That is, in the configuration of the above embodiment, the thread gripping member and the operated member are integrally formed, and each is a part of a single member (yarn catch 13).

However, in the wefting device according to the present invention, the rapier head is not limited to the one in which the thread gripping member and the operated member are integrally formed as in the above embodiment, and the thread gripping member and the operated member are After being formed of separate members, the thread gripping member is provided in the head body so as to be displaceable in the longitudinal direction of the rapier head, and the thread gripping member displaces the thread gripping member in the longitudinal direction. Anything may be provided as long as it is connected to the member.

Specifically, the configuration shown in FIG. 12 can be considered as an example. Regarding the configuration shown in FIG. 12, the head main body of the rapier head basically has the same configuration as the head main body 11 of the above embodiment except for the portion related to this modification, and has the same reference numerals. It is done.

Regarding the configuration of FIG. 12, the thread gripping member 18a is a plate-shaped member formed in the same shape as the gripping portion 13b of the embodiment. However, the thread gripping member 18a is formed so that the dimension of the portion on one end side thereof in the plate thickness direction is smaller than that of the other portion. That is, the thread gripping member 18a is configured to have a thin-walled portion (thin-walled portion) 18a1 on one end side thereof. The thread gripping member 18a is supported by the thin-walled portion 18a1 so as to be connected to the connecting portion 11c of the head main body 11 by the pivot axis 18c. A recess 11c1 is formed in the connecting portion 11c, and the thread gripping member 18a is provided so that the thin-walled portion 18a1 fits in the recess 11c1. Due to this configuration, the thread gripping member 18a is located in the thread introduction portion 11d of the head body 11, at a position where the side surface facing the head portion 11b side abuts on the end surface 11b1 of the head portion 11b and a position where the side surface is separated from the end surface 11b1. It is possible to swing between and.

Further, the operated member 18b is basically formed in the same manner as the portion where the guide portion 13a and the receiving portion 13c in the yarn catch 13 of the above embodiment are combined, and is guided by the guide body 14. The rapier head is provided so as to be displaceable in the longitudinal direction, and is constantly urged toward the head portion 11b side (thread gripping member 18a side) by a compression spring. However, the operated member 18b is formed so that the dimension of the end portion on the thread gripping member 18a side in the plate thickness direction is smaller than that of the other portion. That is, the operated member 18b is configured to have a thin-walled portion (thin-walled portion) 18b1 on the thread gripping member 18a side. Then, in the member to be operated 18b, the connecting pin 18b2 is attached to the thin portion 18b1 so as to extend in the plate thickness direction.

Further, the thread gripping member 18a is formed with an elongated hole 18a2 at a portion connected to the operated member 18b. Further, in the thread gripping member 18a, the portion including the elongated hole 18a2 is also formed as a thin-walled portion having a small dimension in the plate thickness direction. Then, the thread gripping member 18a and the operated member 18b are connected by inserting the connecting pin 18b2 attached to the thin portion 18b1 of the operated member 18b into the elongated hole 18a2 of the thread gripping member 18a. ..

According to the configuration, since the operated member 18b is urged toward the head portion 11b by the compression spring, the thread gripping member 18a is under a normal state due to the urging force acting via the connecting pin 18b2. The side surface is in a state of being pressed against the end surface 11b1 of the head portion 11b. When the operated member 18b is displaced toward the rear end side by engaging the operating lever 17 with the opener, the thread gripping member 18a has a portion connected to the operated member 18b on the rear end side. Swings around the pivot 18c so that it displaces toward. As a result, the side surface of the thread gripping member 18a is separated from the end surface 11b1 of the head portion 11b, and the thread introduction portion 11d is opened.

In the case of this example, the thread gripping member is oscillated and displaced by the operated member as described above. In that case, since the displacement direction of the thread gripping member also includes the component in the longitudinal direction, the side surface of the thread gripping member is in a state of being separated from the end surface 11b1 of the head portion 11b in the longitudinal direction. As described above, the thread gripping member provided "displaceable in the longitudinal direction of the rapier head" in the present invention is not limited to the one provided so as to be displaceable in parallel with the longitudinal direction as in the embodiment. Anything may be provided so as to be displaceable so that the component in the longitudinal direction is included in the displacement direction, and it may be provided so as to swing and displace as in this example.

(5) Regarding the operation lever in the rapier head In the above embodiment, the operation lever 17 is formed so as to form a substantially Z shape as a whole in the above-mentioned form. Specifically, the operation lever 17 extends from one end side portion of the support portion 17c in the long side direction to the short side direction with respect to the support portion 17c supported by the head main body 11. 17a and a portion (second portion) 17b extending from the other end side portion in the long side direction to the opposite side to the first portion 17a in the short side direction. The portion 17a of the above functions as a first engaging portion, and the second portion 17b functions as a second engaging portion.

However, in the rapier head in the wefting device according to the present invention, the operation lever is not limited to the one configured as in the above embodiment, and is referred to as described above, for example, the operation lever 17'shown in FIG. The second portion may be omitted, and may be composed of the support portion 17c'and the first portion 17a' referred to above. Then, in the case of this configuration, on the yarn feeding side, the first portion 17a'engages with the opener 31 on the yarn feeding side and the operation lever 17'is oscillated as in the above embodiment, and the counterfeeding is performed. Also on the thread side, the first portion 17a'engages with the opener 41 on the non-feeding side, and the operation lever 17'is swung. Therefore, in the case of this configuration, the first portion 17a'functions as a first engaging portion and also as a second engaging portion as in the above embodiment.

Further, as is the case with the example of FIG. 13, in the above-described embodiment, the swing amount of the operating lever (opening amount of the gripping mechanism) when engaged with the opener is larger on the counter-thread feeding side than on the thread feeding side. The wefting device is configured so that the weight is also small. However, in the wefting device of the present invention, it is not always necessary to have such a configuration, and the wefting device is configured so that the swing amount on the anti-thread feeding side is the same as that on the yarn feeding side. You may be.

(6) Regarding the opener for swinging the operation lever, in the above embodiment, the opener 31 on the thread feeding side approaches and separates from the operation lever of the rapier head in the state where it has reached the most advanced position. The opener 41 on the anti-thread side is fixedly provided at a position where it can engage with the operating lever of the rapier head in the front-rear direction.

However, in the wefting device according to the present invention, the opener on the yarn feeding side is fixed at a position where it can engage with the operating lever of the rapier head in the front-rear direction, similarly to the opener on the anti-thread feeding side of the embodiment. It may be provided as a target. When the rapier head is configured as in the above embodiment, the operating lever engages with the fixedly arranged opener on the outer side surface thereof and the side surface forming an acute angle with respect to the traveling direction of the rapier head. do. Therefore, in such a configuration, the traveling direction that acts on the rapier head at the time of engagement is opposite to that of the conventional configuration in which the opener and the operating portion of the rapier head are engaged in a plane orthogonal to the traveling direction of the rapier head. The force of orientation is small. As a result, in that configuration, the risk of buckling of the rapier band is reduced (particularly when the rotation speed of the loom is low, the risk is almost eliminated), so that the opener on the yarn feeding side is fixed as described above. Even if it is located in, the problem is unlikely to occur.

Further, in the above embodiment, the opener on the anti-thread feeding side is fixedly arranged as described above, but the opener on the anti-thread feeding side is also the same as the opener on the thread feeding side of the above embodiment. It may be provided so as to approach or separate from the operating lever of the rapier head in the front-rear direction. Then, by an appropriate drive mechanism, when the operating lever in the rapier head retreating toward the standby position reaches the existence range of the opener in the weaving width direction, the opener is displaced toward the rapier head (operating lever). It should be driven to.
(7) In the above embodiment, the wefting device is a so-called band rapier type wefting device in which a band material is used as a driving member for advancing and retreating the rapier head. However, the present invention can also be applied to a rod rapier type wefting device in which the driving member is a rod material.

Further, the present invention is not limited to any of the embodiments described above, and various modifications can be made without departing from the spirit of the present invention.

1 Weaving device 10 Rapier head 10'Rapier head 11 Head body 11a Base part 11b Head part 11b' Head part 11b1 (head part) end face 11c Connecting part 11c' Connecting part 11d Thread introduction part (space part)
11d'Thread introduction part 11h Lid member 13 Yarn catch 13a Guide part (part of operated member)
13b Gripping part (thread gripping member)
13b1 End face (of grip part) 13c Receiving part (part of operated member)
13d Engagement part (part of the member to be operated)
15a Compression spring 17 Operation lever 17a First engagement part 17a'(of operation lever) First part 17a1 First engagement surface 17b Second engagement part 17b1 Second engagement surface 17c Support part 17c' Support part 18a Thread gripping member 18b Operated member 21 Rapier band 25 Thread feeding mechanism 26 Cutting device 29 Band guide 31 Thread feeding side opener 41 Anti-thread feeding side opener 50 Thread guide mechanism 51 Holding device 51a Holding member 51a2 Holding part 51b Holding Member 51b2 Holding part 51d Compression spring 51e Support mechanism 51e5 Block (guidance mechanism)
51e6 rail (guidance mechanism)
51h Holding part 53 Guide member 55 Guidance device 55a Guidance plate 57 Fluid pressure cylinder R Reed T Warp thread Y Flat thread (weft)
Part of Y'(of flat thread)

Claims (3)

It is a wefting device in a rapier loom that weaves using a tape-shaped flat yarn for the weft, and the rapier head whose standby position is set to the anti-feeding side advances toward the yarn feeding side and is gripped by the yarn feeding side. In a one-sided rapier type wefting device that wefts the flat yarn while retracting it.
A yarn guiding mechanism that includes a holding device that holds the tip of the flat yarn supplied from the yarn feeder on the yarn feeding side and guides the flat yarn in the vertical direction with a traveling path of the rapier head in between. It is provided with a thread guide mechanism that displaces the flat yarn in a direction parallel to the width direction of the rapier head, or in cooperation with the rapier head.
The rapier head includes a head body having a thread introduction portion into which the flat thread is introduced at a tip portion, a thread gripping member provided in the thread introduction portion so as to be displaceable in the longitudinal direction of the rapier head, and the head body. The operated member is operated by engaging with the operated member provided displaceably in the longitudinal direction and connected to the thread gripping member and the openers provided on the yarn feeding side and the anti-thread feeding side to operate the operated member. It is equipped with an operation lever that displaces in the longitudinal direction.
The thread introduction portion is defined by the inner surface of the head body which is U-shaped in a plan view so as to open on one side in the width direction and in the vertical direction.
The inner surface of the inner surface defining the thread introduction portion, which faces the retracting direction of the rapier head, functions as one of the pair of grip surfaces for gripping the flat thread, and the thread. The surface of the gripping member facing the one gripping surface functions as the other gripping surface.
A wefting device in a rapier loom, characterized in that the flat yarn is introduced into the yarn introduction portion with displacement of the flat yarn in the width direction by the yarn guiding mechanism at the time of weaving. In the rapier head, the operating lever is provided so as to be swingable in the width direction with respect to the head body, and the operated member is displaced in the longitudinal direction by the swinging operation of the operating lever by engaging with the opener. Is configured to be
The operation lever has a first engaging portion that engages with the opener on the thread feeding side and a second engaging portion that engages with the opener on the anti-thread side, and engages with the corresponding opener. In the non-existing state, the first engaging portion and the second engaging portion project from the head body in the width direction, and the first engaging portion and the second engaging portion with respect to the corresponding opener. The wefting device in a rapier loom according to claim 1, wherein the engaging portion is configured to engage on its side surface. The operating lever has the first engaging portion on one end side and the second engaging portion on the other end side of the swing center, and has the second engaging portion in the longitudinal direction. The joint portion is located on the receding direction side with respect to the first engaging portion, and the first engaging portion projects to one side with respect to the head body in the width direction and the second engaging portion. The wefting device in the rapier loom according to claim 2, wherein the head body is configured to protrude to the other side with respect to the head body.

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