KR20020029298A - Weft-inserting apparatus of rapier loom - Google Patents

Abstract

Also in the configuration in which a guide for guiding the rapier head or the rapier band only inside the inclined opening is provided, there is provided a weft inserting device capable of improving the running stability of the rapier head. It is a task to do it.

In order to solve the above problem, the height position of the guide gap 163 in the first rapid guide 16A outside the inclined opening is the guide edge 191 of the second rapid guide 19 in the inclined opening. It is set above the height position of. The sorghum head 11 moves linearly on the guide edge 191. The first rapier guide 16A guides both ends of the width of the rapier band 13A, and the second rapier guide 19 of the reinforcing concave frame 20 formed at the distal end of the rapier band 13A. Guide 204.

Description

Weft insertion device in rapier looms {WEFT-INSERTING APPARATUS OF RAPIER LOOM}

The present invention relates to a weft insertion device in a rapier loom.

As disclosed in Japanese Laid-Open Patent Publication Nos. Hei 3-137247 and Hei 5-209341, in the weft insertion device in which a rapier band to which a rapier head is fixed is wound on a rapier wheel, the rapier head is a rapier. By entering the inside of the inclined opening by the reciprocating rotational drive of the wheel, the inside of the inclined opening is evacuated. The weft yarn in the weft insertion standby position is inserted into the inclined opening by the receiving rapier head, and the weft thread inserted into the inclined opening by the receiving rapier head is received by the receiving rapier head. The weft received by the receiving rapier head passes through the inclined opening by allowing the receiving rapier head to retract to the outside of the inclined opening.

In order not to fail weft from the receiving head to the receiving head, stable running of the receiving head and the receiving head is required. Normally, the lower surface of the rapier head and the lower surface of the rapier band are faced with each other, and the center of the rapier head is above the movement path of the rapier band. Therefore, during acceleration and deceleration of the rapier head, a rotation moment is generated around the center, the rapier head is about to float during acceleration, and the rapier head is about to fall during deceleration. In the rapier loom of Japanese Patent Application Laid-open No. Hei 5-209341, the rapier head and the rapier band are guided to travel by a plurality of spacing teeth formed in a line with a slay, and the plurality of spacing teeth are a rapier head and a rapier. Guide only the bottom of the band. In such a guide configuration, the running rapier head fluctuates up and down, and the running of the rapier head becomes unstable.

In order to prevent unstable running of the rapier head, in the rapier loom of Japanese Patent Application Laid-Open No. 5-27070, two kinds of rapier guides for guiding the upper and lower surfaces of the rapier band are used. One type of rapier guide guides the running of the rapier band by fitting one end of the width of the rapier band, and the other type of rapier guide guides the other end of the width of the rapier band by driving the rapier band. To guide you. In such a guide configuration, since the running head of the head does not fluctuate up and down, the running of the head of the head is stabilized.

The tip portions of the two kinds of rapier guides which sandwich both ends of the width of the rapier band push in the inclined row and enter the inclined opening in the running of the rapier head. The distance between the tip portions of the two kinds of rapier guides in the yarn direction of the inclined yarn, i.e., the swinging direction of the body, is greater than the width of the rapier bands, and the tips of the two kinds of rapier guides are provided at both ends of the rapier band inside the inclined opening. Protrude outwards. The tip of one type of rapier guide (hereinafter referred to as first rapier guide) projects from the one end of the rapier band inside the inclined opening to the body side, and the other type of radar guide (hereinafter referred to as second rapier guide). The protruded portion protrudes from the other end of the rapier band inside the inclined opening toward the cloth fell side immediately before the woven fabric. In order to avoid the immediately preceding interference with the distal end of the second rapier guide in the entry and exit of the second rapier guide to the inside of the inclined opening, the traveling path of the rape band in the inside of the inclined opening of the rapier band is immediately before. You need to set it at a remote location. Then, there is a need to keep the body's final retracted position (the position farthest from the previous) from immediately before. In addition, the presence of the tip portion of the first rapid guide projecting from the one end of the rapier band inside the inclined opening to the body side causes a body crack due to the thickness of the rapid guide when the distance to the body is short. As a result, the final retracted position of the body is further away from the last. The farther the last retracted position of the body is from the last, the greater the swing range of the body. Increasing the swing range of the body hinders the speed of the loom.

The present invention is a weft insertion device in a rapier loom that can improve the running stability of the rapier head even in a configuration in which a guide for guiding the rapier head or the rapier band only inside the inclined opening is adopted. The purpose is to provide.

Fig. 1 shows a first embodiment, Fig. 1A is a partially omitted front view, and Fig. 1B is a perspective view of the front end side of a rapier band.

2 is a perspective view of a sorghum head.

3A is a side view of the sorghum head, and FIG. 3B is a cross-sectional view taken along the line A-A of FIG. 3A.

FIG. 4A is a plan view of the receiving rapier head, FIG. 4B is a cross-sectional view taken along the line B-B of FIG. 4A, and FIG. 4C is a cross-sectional view taken along the line C-C of FIG. 4A.

5 is a perspective view of a receiving rapid head.

6A is a side view of the receiving rapier head, and FIG. 6B is a sectional view taken along the line D-D of FIG. 6A.

Fig. 7A is a plan view of the receiving rapier head, and Fig. 7B is a sectional view taken along the line E-E of Fig. 7A.

8A is a front view of the receiving rapier head side, and FIG. 8B is a front view of the receiving rapier head side.

FIG. 9A is a side view showing a rape band inside the inclined opening, and FIG. 9B is another side view showing a rape band inside the inclined opening.

FIG. 10 shows a second embodiment, FIG. 10A is a side cross-sectional view of the sorghum head, and FIG. 10B is a sectional view taken along the line F-F in FIG. 10A.

FIG. 11A is a side cross-sectional view of the receiving rapier head, and FIG. 11B is a cross-sectional view taken along the line G-G in FIG. 11A.

FIG. 12 shows a third embodiment, FIG. 12A is a longitudinal sectional view of the receiving rapier head, and FIG. 12B is a longitudinal sectional view of the receiving rapier head.

FIG. 13 shows a fourth embodiment, FIG. 13A is a longitudinal sectional view of the receiving rapier head, and FIG. 13B is a longitudinal sectional view of the receiving rapier head.

FIG. 14 shows a fifth embodiment, FIG. 14A is a longitudinal sectional view of the receiving rapier head, and FIG. 14B is a longitudinal sectional view of the receiving rapier head.

FIG. 15 shows a sixth embodiment, FIG. 15A is a sectional view showing one side first radar guide, and FIG. 15B is a sectional view showing another first rapier guide.

* Description of the symbols for the main parts of the drawings *

11,11C: Feeding Rapier Head 111: Center of Feeding Rapier Head

12,12C: Receiving Rapid Head 121: Center of Receiving Rapid Head

13A, 13B: Rapid Band 131: Top

132: bottom surface 16A, 16B, 16C, 16D: first rapid guide

163: guide gap to be the guide position

164C: Guide surface to guide position

19: second rapier guide 20: reinforcement frame for reinforcement

204: lower surface 33, 34, 35: reinforcement

F1, F2: Driving force acting position G: Guide position

To this end, the present invention provides a first rapier band having a first rapier guide on the outside of the inclined opening and a second rapier guide on the inside of the inclined opening, and equipped with a rapier head for weft gripping. In the invention according to claim 1, the invention is directed to a weft insertion device in a rapier loom that is guided by a guide and linearly runs on the second rapier guide to insert the weft yarn. A reinforcement part is provided at the distal end of the rapier band connected to the head to maintain a straight shape of the distal end, and at least one lower surface of the reinforcement part and the rapier head is lower than the lower surface of the rapier band in a straight state. The height position of the guide position in the first rapid guide and the height of the guide position of the second rapid guide The position is different, guides at least an upper surface of the upper and lower surfaces of the rapier band by the first rapier guide, guides the lower surface of the reinforcement portion or the lower surface of the rapier head to the second rapier guide, The driving force acting position in the said rapier band which is in the state was set at least near the height position of the center of the said rapier head.

In the invention according to claim 2, in the first aspect, the upper and lower surfaces of the rapier band are guided by the first rapier guide.

In the invention according to Claims 1 and 2, the configuration in which the driving force acting position in the rapier band is set to the vicinity of the center position in the vertical direction of the rapier head comprises the driving force applied to the rapier band. It passes along a straight line to the center of the rapier head almost linearly. Therefore, the vertical drive of the rapier head is suppressed. In addition, the reinforcement part maintains the straight shape of the tip end portion of the rapier band, thereby preventing warping at the tip end side of the rapier band. The suppression of the up and down driving of the rapier head and the prevention of bending of the rapier band contribute to the running stability of the rapier head. As a result, the running of the rapier head can be stabilized only by guiding the lower surface of the rapier head or the reinforcing portion inside the inclined opening.

In the invention according to claim 3, the cross-sectional shape of the reinforcement portion in any one of claims 1 and 2 protrudes below the lower surface of the rape band in the longitudinal direction of the rape band. It was set as the concave frame formed in U shape as much as possible.

The recess is simple as a reinforcement part.

In the invention according to claim 4, the reinforcement mold is co-molded in the same material as any one of claims 1 to 3, wherein the reinforcing mold is used.

The manufacturing process is simplified compared to the configuration in which the reinforcing portions of the separate bodies are provided in the rapier band.

In invention of Claim 5, the length of the said reinforcement part was made into at least half of the stroke of the said rapier head in any one of Claims 1-4.

The first half of the insertion of the rapier head into the inclined opening is at the acceleration of the rapid head, and the second half of the insertion of the rapier head into the inclined opening is at the deceleration of the rapid head. The first half of the evacuation from the inside of the inclined opening of the rapier head is at the acceleration of the rapier head, and the second half of the evacuation from the inside of the inclined opening of the rapier head is at the deceleration of the rapier head. In the first half of the insertion of the rapier head into the inclined opening and in the second half of evacuation from the inside of the inclined opening of the rapier head, the rise of the rapier head and the buckling of the rapier band are likely to occur. The configuration in which the length of the portion is at least half of the stroke of the rapier head prevents the injuring of the rapier head and the buckling of the rapier band. Prevention of injury of the rapier head or buckling of the rapier band greatly contributes to the running stability of the rapier head.

Embodiment of the invention

EMBODIMENT OF THE INVENTION Hereinafter, 1st Embodiment which actualized this invention is described based on FIGS.

Reference numeral 11 in Fig. 1A denotes a squeezing rapier head inserted inside the opening of the inclination T (shown in Fig. 4) at the weft insertion start end side, and reference numeral 12 denotes the inclination T at the weft insertion end side. A receiving rapid head inserted inside the opening. The receiving rapier head 11 is fixed to the tip of the rapier band 13A, and the receiving rapier head 12 is fixed to the tip of the rapier band 13B. The rapier band 13A is wound around the rapier wheel 14, and the rapier band 13B is wound around the rapier wheel 15. The rapier bands 13A and 13B are formed by molding a laminate of yarn or cloth carbon fibers with an epoxy resin.

A plurality of power receiving holes 133 are formed in a row in the rapier bands 13A and 13B, and power transmission teeth 141 and 151 are formed in a line on the circumferential surfaces of the rapier wheels 14 and 15. The power receiving hole 133 of the rape band 13A, 13B is engaged with the power transmission teeth 141, 151 of the rape wheels 14, 15, and the rotation of the rape wheels 14, 15 is driven by the power transmission tooth ( 141, 151 and the power receiving hole 133 are engaged to the rapier bands 13A and 13B.

The rapier wheels 14 and 15 are reciprocally driven in synchronization with the rotation of the loom. The receiving and receiving rapier head 11 and the receiving rapier head 12 are inserted inside the inclined opening by reciprocating rotation of the two rapier wheels 14 and 15, and are indicated by the dashed lines in FIGS. 8A and 8B. As seen in the middle of the loom width. The weft yarn Y inserted into the inclined opening by the receiving rapier head 11 is received by the receiving rapier head 12. The receiving and receiving rapier head 11 and the receiving rapier head 12 are evacuated from the inside of the inclined opening by the double-acting rotational movement of the two rapier wheels 14 and 15, so that the weft yarn Y is inclined. Pass inside the opening.

The rapier band 13A is guided by the first rapier guide 16A provided outside the inclined opening on the side of the weft insertion start end. The rapier band 13B is guided by the first rapier guide 16B provided outside the inclined opening on the weft insertion end side. As shown in FIG. 3B, the first rapid guide 16A has a configuration in which the pressing body 162 is coupled onto the support 161, and a guide gap () is formed between the supporting body 161 and the pressing body 162. 163 is formed. Both ends of the width of the rapier band 13A pass through the guide gap 163. The guide surface 164 of the upper surface of the support 161 which forms the guide gap 163 guides the lower surface 132 of both ends of the width | variety of the rape band 13A. The guide surface 165 of the lower surface of the pressing body 162 forming the guide gap 163 guides the upper surface 131 of both ends of the width of the rapier band 13A.

As shown in FIG. 6B, the first rapier guide 16B has the same structure as the first rapier guide 16A, and both ends of the width of the rapier band 13B pass through the guide gap 163. . The guide surface 164 of the first rapier guide 16B guides the lower surface 132 of both ends of the width of the rapier band 13B. The guide surface 165 of the first rapier guide 16B guides the upper surface 131 of both ends of the width of the rapier band 13B.

As shown in Figs. 9A and 9B, the receiving and receiving rapier head 11 and the receiving rapier head 12 inserted inside the inclined opening are formed in line with the slay 18 supporting the body 17. 2 The upper side of the radar guide 19 is driven. The maximum width of the second rapid guide 19 in the swinging direction of the body 17, that is, the guide edge 191 at the upper end of the second rapid guide 19 is smaller than the width of the rapid band 13A, 13B. It is.

As shown in FIG. 1B, the concave frame 20 for reinforcement is integrally formed in the front-end | tip part of the rapier band 13A, 13B. The reinforcing recess 20 is co-molded with the same material as the rapier bands 13A and 13B. As shown in FIG. 2, the reinforcing concave frame 20 includes a pair of drooping walls 201 and 202 and a bottom wall 203 connecting lower ends of both drooping walls 201 and 202. As shown in Fig. 3 and Fig. 6, the cross-sectional shape of the reinforcing concave frame 20 when viewed in the longitudinal direction of the rape bands 13A and 13B is the lower surface 132 of the rape bands 13A and 13B. It is formed in U shape which protruded further downward. The lower surface 204 of the bottom wall 203 of the reinforcing concave frame 20 faces the power receiving hole 133 from the front end side of the rapier bands 13A and 13B, while most of the lower surface 204 is a rapier. It is parallel to the upper surface 131 or the lower surface 132 of the band 13A, and is smoothly connected to the lower surface 132 of the rapier band 13A at the position 205 (FIG. 1B). As shown in FIGS. 8A and 8B, the length D of the reinforcing recess 20 is equal to or half of the stroke L of the receiving and receiving rapier head 11 and the receiving and receiving rapier head 12. It is a little long.

As shown in Fig. 2 and Fig. 4A, the sorghum head 11 comprises a guide frame 21 formed by bending a single metal plate, and a gripping mechanism 22 fixed to the guide frame 21. As shown in FIG. 4B, the gripping mechanism 22 includes a plate for pressing and holding the fixed gripping piece 221, the movable gripping piece 222 capable of bending deformation, and the movable gripping piece 222 to the fixed gripping piece 221. A spring 223.

In addition, the guide frame 21 is an established wall 24 which is provided on the lower wall 23 and one side of the lower wall 23 (that is, just before the W1 side of the woven fabric W shown in FIG. 9). And a side wall 25 that is set up on the other side of the lower wall 23 (that is, the body 17 side on the sled 18), and an upper wall 26 that is connected to the side wall 25 and faces the lower wall 23; And the drooping wall 27 lowered from the upper wall 26. The fixing gripping piece 221, the movable gripping piece 222, and the leaf spring 223 are bundled in this order on the upper surface of the lower wall 23, and are screwed. As shown in FIGS. 4A to 4C, the guide frame 21 is integrated by screwing on the bottom wall 203 of the reinforcing recess 20 of the rapier band 13A. That is, the concave frame 20 for reinforcement of the rapier band 13A and the receiving rapier band 11 are integrated. The face work forming plate 211 is fixed to the bottom face of the lower wall 23. The bottom wall 203 of the concave frame 20 for reinforcement of the bottom face 212 and the rapier band 13A of the face work forming plate 211 is fixed. The lower surface 204 is flat. The lower surface 212 of the surface work forming plate 211 becomes the lower surface of the delivery head 11.

3A and 4B, weft guide edges 241 and 242 and horizontal weft guide edges 243, which are raised and lowered at the tip side, are formed at the top edge of the establishing wall 24. As shown in FIG. The weft guide edge 241 of the rising gradient is also an inclined guide edge. When the receiving rapier head 11 starts to run, the weft yarn Y in the standby position of FIG. 1A is connected to the weft guide edges 241, 242, 243 of the establishing wall 24 and the lower edge 271 of the drooping wall 27. It guides to the holding | gripping site between the fixed gripping piece 221 and the movable gripping piece 222 by this.

In addition, the upper wall 26 is formed with a position regulating recess 261. The weft yarn Y in a state held by the gripping mechanism 22 is caught by the position regulating recess 261. The holding path of the weft yarn Y in the state held by the holding mechanism 22 is regulated by the position regulating recess 261.

3A and 4A, inclined guide edges 251 and 252, which are separated from each other at the leading end side, are formed at the upper and lower edges at the leading end side of the side wall 25. As shown in FIG. When the receiving rapier head 11 pushes and runs up and down the inclination T of the opening and closing operation, the side wall 25 pushes and guides the inclination T of the up and down along the inclination guide edges 251 and 252. The inclined guiding action by the inclined guide edge 252 leads to the inclined guiding action by the front edge 231 (FIG. 2) of the lower wall 23 and the lower surface of the planar forming plate 211. The inclined guiding action by the inclined guide edge 251 leads to the inclined guiding action of the upper surface of the upper wall 26. The inclined guiding action by the lower surface of the face work forming plate 211 leads to the inclined guiding action of the bottom surface 204 of the bottom wall 203 of the reinforcing frame 20 of the rapier band 13A.

As shown in FIG. 5 and FIG. 7A, the reciprocating rapier head 12 includes a guide frame 28 formed by bending a single metal plate, and a gripping mechanism 29 mounted to the guide frame 28. The holding mechanism 29 includes a fixed holding body 291 integrally formed at the distal end of the guide frame 28, a movable holding body 292 supported to be movable in the longitudinal direction of the receiving rapid head 12, and The holding body 292 is made up of a compression spring 293 which is in pressure contact with the fixed holding body 291 and a lever 294 connected to the movable holding body 292. The fixed holding body 291 of the receiving rapier head 12 enters between the side wall 25 and the receiving wall 27 of the receiving rapier head 11 shown in FIG. 2, and receives the receiving rapier head 11. The weft yarns Y held by) are hand-held between the fixed holding body 291 and the movable holding body 292. The lever 294 abuts against the weft insertion end side fixed cam (not shown) and rotates about the support pin 295. By this rotational drive, the movable gripping member 292 is moved away from the fixed gripping member 291, whereby the weft yarn Y is released from the gripping action of the fixed gripping member 291 and the movable gripping member 292.

In addition, the guide frame 28 consists of the lower wall 30 and the side walls 31 and 32 which stood up on both sides of the lower wall 30. As shown in FIG. As shown in FIG. 7B, the guide frame 28 is screwed and integrated on the bottom wall 203 of the reinforcing recess 20 of the rapier band 13B. That is, the reinforcing recess 20 of the rapier band 13B and the receiving rapier head 12 are integrated. On the lower surface of the lower wall 30, as shown in FIG. 6A, the surface forming plate 281 is fixed. The lower surface 282 of the surface forming plate 281 and the lower surface of the rapier band 13B are faced with each other. The lower surface 282 of the face work forming plate 281 becomes the lower surface of the receiving rapier head 12.

Moreover, when the receiving rapier head 12 pushes and runs up and down the inclination T which performs opening and closing operation, the side walls 31 and 32 push and guide the up and down inclination T. The upper edges 311 and 321 of the side walls 31 and 32 of the receiving rapier head 12 guide the upper inclination T. The inclined guiding action by the upper edges 311 and 321 of the side walls 31 and 32 leads to the upper surface 131 (FIG. 7B) of the rapier band 13B. The inclined guiding action by the inclined surface 301 (FIG. 6A) of the lower wall 30 leads to the inclined guiding action by the lower surface of the surface forming plate 281 (FIG. 6A). The inclined guiding action by the lower surface of the face work forming plate 281 leads to the inclined guiding action of the bottom surface 204 of the bottom wall 203 of the reinforcing frame 20 of the rapier band 13B.

As shown in FIG. 3B, the height position of the guide gap 163 serving as the guide position in the first rapid guide 16A is higher than the height position of the guide edge 191 of the second rapid guide 19. It is set on the upper side. That is, the height position of the guide gap 163 is higher than the height position of the guide position G (shown by the broken line in FIG. 3A) of the 2nd radar guide 19 formed by the row of the guide edge 191. FIG. It is set and the delivery rapier head 11 linearly moves on the guide position G. As shown in FIG. As shown in FIG. 3B, the height position of the center 111 where the receiving head 11 and the reinforcing concave frame 20 are aligned with the bottom wall of the concave frame 20 for reinforcing the rape band 13A ( The difference α1 of the height position of the lower surface 204 of the 203 is determined by the height position of the guide surface 164 of the first rape guide 16A and the guide position G of the second rape guide 19. It is almost equal to the difference Δ1 of the height position.

In addition, as shown in FIG. 3A and FIG. 3B, when the squeeze rapier head 11 slides on the 2nd rape guide 19, the reinforcing concave frame 20 of the rape band 13A of The surface uniformity of the lower surface 204 of the bottom wall 203 and the lower surface of the surface work forming plate 211 facilitates sliding contact between the feeder rapid head 11 and the second rapid guide 19.

F1 in FIG. 3A is an action position of the driving force transmitted from the rapier wheel 14 (FIG. 1) to the rapier band 13A in a straight state. The driving force acting position F1 is propagated along the rapier band 13A to the receiving rapier head 11 so that the rapier band 13A and the receiving rapier head 11 run integrally. The height position of the driving force acting position F1 in the rapier band 13A in a straight state is a squeezing rapier head 11 and a reinforcing concave frame (1) according to the movement of the squeezing rape head 11 ( 20) is aligned with the height position of the movement path K1 of the center 111 which aligned. That is, the height position of the movement path K1 of the center 111 which aligns the sorghum head 11 and the reinforcement concave frame 20 is set within the thickness range of the rapier band 13A in a straight state. It is.

As shown in FIG. 6B, the height position of the guide gap 163 serving as the guide position in the first rapid guide 16B is higher than the height position of the guide edge 191 of the second rapid guide 19. It is set on the upper side. That is, the height position of the guide gap 163 is higher than the height position of the guide position G (shown by the broken line in FIG. 6A) of the 2nd rapier guide 19 formed by the row of the guide edge 191. FIG. It is set, and the receiving rapid head 12 linearly moves on the guide position G. As shown in FIG. As shown in Fig. 6B, the height position of the center 121 where the receiving rapier head 12 and the reinforcing concave frame 20 are aligned with the bottom wall of the concave frame 20 for reinforcing the rape band 13B ( The difference β1 of the height position of the lower surface 204 of the 203 is determined by the height position of the guide surface 164 of the first rape guide 16B and the guide position G of the second rape guide 19. It is almost equal to the difference Δ2 of the height position.

As shown in Figs. 6A and 6B, when the receiving rapier head 12 slides on the second rapier guide 19, the bottom wall of the reinforcing concave frame 20 of the rapier band 13B ( The surface uniformity of the lower surface 204 of the 203 and the lower surface of the surface forming plate 281 facilitates sliding contact between the receiving rapid head 12 and the second rapid guide 19.

F2 in FIG. 6A is an action position of the driving force transmitted from the rapier wheel 15 to the rapier band 13B in a straight state. The driving force acting position F2 propagates along the rapier band 13B to the receiving rapier head 12 so that the rapier band 13B and the receiving rapier head 12 run integrally. The height position of the driving force acting position F2 of the rapier band 13B in a linear state is the receiving rapier head 12 and the reinforcing concave frame 20 according to the movement of the receiving rapier head 12. The height position of the movement path K2 of the center 121 which matched this is adjusted. That is, the height position of the movement path K2 of the center 121 which aligns the receiving rapier head 12 and the reinforcing concave frame 20 is set within the thickness range of the rapier band 13B in a straight state. It is.

In the first embodiment, the following effects are obtained.

1-1) The driving force acting positions F1 and F2 in the rapier bands 13A and 13B are centers in the vertical direction in which the rapier heads 11 and 12 and the reinforcing concave frame 20 are fitted ( 111, 121) is set to the height position. Therefore, the driving force applied to the rapier bands 13A and 13B is such that the rapier heads 11 and 12 and the reinforcing concave frame 20 are aligned along the straight lines of the rapier bands 13A and 13B in a straight state. It is transmitted linearly to the centers 111 and 121. Therefore, at the time of the acceleration / deceleration of the rapier heads 11 and 12, the generation of the rotation moment around the centers 111 and 121 is suppressed. The suppression of the generation of the rotation moment around the centers 111 and 121 brings about the suppression of the up and down driving of the rapier heads 11 and 12. In addition, the shape of the reinforcing concave frame 20 maintains the straight shape of the tip portions of the rapier bands 13A and 13B, thereby preventing warping at the tip end sides of the rapier bands 13A and 13B. The suppression of the up and down drive of the rape heads 11 and 12 and the prevention of the warp of the rape bands 13A and 13B bring about the running stability of the rape heads 11 and 12. As a result, the lower bands 204 or the rapiers of the reinforcing concave frame 20 are allowed to run on the upper side of the second rapid guide 19 inside the inclined opening. The running of the rapier heads 11 and 12 is stabilized only by guiding only the lower surfaces 212 and 282 of the heads 11 and 12.

1-2) The adoption of the second rapid guide 19 which guides only the lower surface 204 of the reinforcing recess 20 or the lower surface 282 of the rapier heads 11 and 12 brings the following advantages: .

(1) Since the second rapier guide 19 only needs to guide the lower surface 204 of the reinforcing concave frame 20 or the lower surface 282 of the rape heads 11 and 12, the second rapier guide 19 The width of the guide edge 191 may be equal to or less than the width of the rapier bands 13A and 13B. Therefore, as compared with the adoption of the rapier guide disclosed in Japanese Unexamined Utility Model Publication No. Hei 5-27070, the traveling path of the rape bands 13A and 13B inside the inclined opening is made closer to the front W1 of the woven fabric W. Can be. The closer the traveling path of the rapier bands 13A, 13B inside the inclined opening to the front end W1 of the woven fabric W, the closer the final retreat position of the body 17 is to the front end W1. Therefore, the swinging range of the body 17 becomes small. The fluctuation range of the body 17 is smaller for speeding up the loom, preventing inclination breakage or inclination damage due to friction with the body blades.

(2) A temple device is installed at both ends of the fabric (W1) immediately before the fabric (W) to prevent shrinkage of the fabric. Among the rapier guides disclosed in Japanese Laid-Open Patent Publication No. Hei 5-27070, the rapier guides at both ends of the fabric width are provided. The rocking trajectory passes near the temple arrangement. It is necessary to increase the height position of the temple apparatus as the tip of the rapier guide protrudes upward from the upper surface of the rapier band. In the case of the structure in which the temple device is in close contact with the upper surface of the woven fabric W to prevent the shrinkage of the fabric, the winding angle of the woven fabric with respect to the temple device becomes smaller as the height position of the temple device is increased. The smaller the winding angle of the woven fabric relative to the temple device, the smaller the effect of preventing shrinkage of the fabric. The adoption of the second rapier guide 19 is advantageous in lowering the height position of the temple device, and the rapier heads 11 and 12 and the reinforcing concave frame 20 are supported by the second rapier guide 19. The configuration to guide the increase the fabric shrinkage prevention effect.

1-3) Reinforcing concave frame 20, which is a reinforcing part for maintaining the straight shape of the tip of the rape band 13A, 13B, is a rapier band (when viewed from the longitudinal direction of the rape band 13A, 13B). It is formed in U shape bent at substantially right angles at four places of the width direction of 13A, 13B). Such a bent shape is excellent in bending prevention and easy to form. Such a bent reinforcement concave frame 20 is simple as a reinforcement portion, and has a smooth shape without being caught against an inclination.

1-4) The first half during insertion of the receiving receiver head 11 and the receiving recipient head 12 into the inclined opening is when the rapid head 11 is in an accelerated state. The latter half of the evacuation from the inside of the inclined opening of the receiving receiver head 11 and the receiving recipient head 12 is when the rapid heads 11 and 12 are in the decelerated state. FIG. 8A shows the first half of the insertion of the sorghum head 11 into the inclined opening or the second half of the simmering head 11 from the inside of the inclined opening. FIG. 8B shows the first half when the insertion of the receiving rapid head 12 into the inclined opening or the second half when the receiving rapid head 12 is evacuated from the inside of the inclined opening. When the rape heads 11 and 12 in the insertion stroke into the inclined opening are in an acceleration state, and when the rape heads 11 and 12 in the retracting stroke from the inside in the inclined opening are in a decelerated state, Injuries of the pier heads 11 and 12 and buckling of the rapier band are likely to occur. The length D of the reinforcing recess 20 is slightly longer than half of the stroke L of the rapier heads 11 and 12. Such length setting of the reinforcing concave frame 20 is the first half at the time of insertion into the inclined opening of the rape heads 11 and 12 and the second half at the time of evacuation from the inside of the inclined opening of the rape heads 11 and 12. In order to allow both ends of the reinforcing concave frame 20 of the rape bands 13A and 13B to receive the guide action of the guide surface 165 of the first rape guides 16A and 16B. The guide action of the guide surface 165 of the first rapier guide 16A, 16B to the reinforcing concave 20 of the rape bands 13A, 13B prevents injuries of the reinforcing concave 20. . Therefore, injuries of the receiving and receiving rapier head 11 and the receiving and receiving rapier head 12 fixed to the reinforcing recess 20 are prevented. The reinforcing concave frame 20 which prevents the rise of the rape heads 11 and 12 greatly contributes to the running stability of the rape heads 11 and 12.

1-5) The reinforcing concave 20 is formed integrally with the rapier bands 13A and 13B, but the reinforcing concave 20 can be easily formed by mold molding. The process of attaching the reinforcement of the separate body to the rapier band is a cumbersome process that requires mounting work such as screwing, pinning, and bonding. The configuration in which the reinforcing recesses 20 are integrally formed on the rapier bands 13A and 13B eliminates the cumbersome mounting work step.

1-6) When the reinforcing part of the separate body is joined to the rapier band, the reinforcing part of the separate body needs to have rigidity not to bend and deform, and the joining area at the joining part of the rape band and the reinforcing part is appropriate. Need to be sized. For example, it is easy to combine the reinforcement section of the cross-sectional concave shape with the flat-shaped rapier band, so that the coupling structure of the rape band and the reinforcement section is smaller than the rapier band including the reinforcing concave frame 20 of the present embodiment. It becomes heavy. That is, the structure in which the reinforcement part is integrally formed in the rapier band contributes to the weight reduction of the coalescence of the rape band and the reinforcement part. This weight reduction is advantageous for speeding up the loom.

Next, the second embodiment of FIGS. 10 and 11 will be described. The same code | symbol is used for the same structural part as 1st Embodiment.

As shown to FIG. 10A, the latter half part 232 of the lower wall 23 of the receiving rapier head 11C is lower than the front half part 233 of the lower wall 23. As shown in FIG. The latter half part 232 of the lower wall 23 engages and is fixed to the bottom wall 203 of the reinforcing recess 20 of the rapier band 13A. As shown in FIG. 10B, the height position of the center 111 of the receiving rapier head 11C and the height of the lower surface 204 of the bottom wall 203 of the concave frame 20 for reinforcing the rapier band 13A. The difference α2 in the position is larger than the difference α1 in the first embodiment. When the receiving rapier head 11C runs on the second rapier guide 19, only the lower surface 204 of the bottom wall 203 of the reinforcing concave frame 20 of the rapier band 13A is second to the second rapier guide 19. Sliding contact is possible with the guide edge 19 of the rapier guide 19.

As shown in FIG. 11A, the latter half portion 302 of the lower wall 30 of the receiving rapier head 12C is lower than the first half 303 of the lower wall 30. The latter half part 302 of the lower wall 30 engages and is fixed to the bottom wall 203 of the recess 20 for reinforcement of the rapier band 13B. As shown in FIG. 11B, the height position of the center 121 of the receiving rapier head 12C and the height of the lower surface 204 of the bottom wall 203 of the reinforcing recess 20 of the rapier band 13B are raised. The difference β2 in the position is larger than the difference β1 in the first embodiment. When the receiving rapier head 12C travels on the second rapier guide 19, only the bottom surface 204 of the bottom wall 203 of the reinforcing concave frame 20 of the rapier band 13B is second to the second rapier guide 19. Sliding contact is possible with the guide edge 191 of the rapier guide 19.

In the second embodiment, the same effects as in the first embodiment can be obtained. Moreover, since the height position of the lower surface 204 of the bottom wall 203 of the reinforcing recess 20 is lower than in the case of the first embodiment, the high position of the guide edge 191 of the second rapid guide 19 is provided. Also lowers. Therefore, the amount (the amount of protrusion from the lower inclination upward) of the guide edge 191 when the second rapid guide 19 in the second embodiment enters the inside of the inclined opening is the first embodiment. Will be less than The smaller the amount of the guide edge 191 is inclined, the less likely to be oblique cutting and oblique stripes.

The cross-sectional shape of the reinforcement part integrally formed at the distal end portions of the rapier bands 13A and 13B is the reinforcement part 33 of the third embodiment of FIGS. 12A and 12B and the reinforcement part of the fourth embodiment of FIGS. 13A and 13B. 34, the reinforcement part 35 of 5th Embodiment of FIG. 14B, etc. are possible in various ways. Coupling of the rape heads 11 and 12 (FIG. 1A) to the reinforcing portions 33 and 34 forms the shape of the lower walls 23 and 30 of the rape heads 11 and 12 (FIG. 1A). 34) Can be easily achieved by fitting to the shape of the garment surface.

The reinforcement part 35 is an inverted U-shaped convex frame whose cross-sectional shape protrudes above the upper surface of the rape band 13A, 13B. Coupling of the rape heads 11 and 12 to the reinforcement part 35 is easy by fitting the shape of the lower walls 23 and 30 of the rape heads 11 and 12 to the shape of the lower surface of the reinforcement part 35. Can be achieved.

In all of the third to fifth embodiments, the second rapier guide 19 guides the lower surface of the rapier heads 11 and 12, and the lower surface of the reinforcing portions 33 to 35 is the second rapier guide. It is not guided by sliding contact with (19).

Next, the sixth embodiment of FIGS. 15A and 15B will be described. The same code | symbol is attached | subjected to the same structural part as 1st Embodiment.

As shown in FIG. 15A, the first rapid guide 16C has a configuration in which the pressing body 162C is bonded onto the support 161C, and a guide gap is formed between the supporting body 161C and the pressing body 162C. 163C is formed. The guide surface 165C of the lower surface of the pressing body 162C forming the guide gap 163C guides the upper surface 131 of both ends of the width of the rapier band 13A. The guide surface 164C of the upper surface of the support 161C forming the guide gap 163C is formed on the lower surface 204 of the bottom wall 203 of the reinforcing recess 20 of the rapier band 13A or of the rapier head. The lower surface of the lower wall 23 is guided.

As shown in FIG. 15B, the first rapid guide 16D has the same structure as the first rapid guide 16C. The guide surface 165C guides the upper surface 131 of both ends of the width of the rapier band 13B. The guide surface 164C guides the lower surface 204 of the bottom wall 203 of the reinforcing recess 20 of the rapier band 13B or the lower surface of the lower wall 23 of the rapier head.

The first rapier guides 16C and 16D outside the inclined openings have an upper surface of the upper and lower surfaces of the rape bands 13A and 13B, and a lower wall 204 of the reinforcing concave frame 20 or a lower wall of the rapier band ( In order to guide the lower surface of 23), the same effects as those in the first embodiment can be obtained with respect to the running stability of the water receiving rapier head 11 and the receiving rapier head 12.

In the present invention, the following embodiments are also possible.

(1) Joining the reinforcement of a separate body to the front-end | tip of a rapier band, and combining a rapier head to the front end of a separate reinforcement part or a rapier band.

(2) A part of the guide frame 21 of the rapier head 11 in each of the above embodiments is extended to be a reinforcing part, and the guide frame 28 of the rapier head 12 in the above-described embodiments is provided. To extend part of the reinforcement.

(3) In each of the above embodiments, the cross-sectional shape of the reinforcing part is symmetrical, but the cross-sectional shape of the reinforcing part is asymmetrical.

(4) The height position of the moving paths K1 and K2 of the centers 111 and 121 aligned with the rape heads 11 and 12 and the reinforcement part is slightly higher in the thickness range of the rapier bands 13A and 13B in a straight state. To get away.

(5) The height position of the movement paths K1 and K2 of the centers 111 and 121 of the rape heads 11 and 12 is slightly lowered from the thickness range of the rapier bands 13A and 13B in a straight state. that.

(6) In the present invention, the method of aligning the actuation position of the driving force of the rape band with the height of the center when the reinforcing part is added to the rapier head is most preferable. When there is almost no difference between the height of the center of the shaft and the head only, or there is no functional problem even though there is a slight difference, the position of the driving force of the rapier band is set to the height of the center of the center of the rape head only. It may be set to match.

It describes below about inventions other than what was described in the claim grasped | ascertained by said embodiment.

(1) The weft insertion device of the rapier loom according to any one of claims 1 to 5, wherein the height position of the center of the rapier head is set within the thickness range of the rapier band in a straight state.

(2) The rapier loom according to any one of claims 1 to 5, wherein the driving force acting position in the rapier band in a straight state is adjusted to the vicinity of the height position of the center of the union of the rape head and the reinforcing portion. Weft insertion device in

(3) Weft insertion device in the rapier loom according to any one of claims 1 to 5, wherein the driving force acting position in the rapier band in a straight state is adjusted to the vicinity of the height position of the center of the rapier head. .

As described in detail above, in the present invention, a reinforcing part is provided at the tip end of the rapier band, and the height position of the guide position in the first rape guide outside the inclined opening and the guide of the second rape guide inside the inclined opening are provided. The height of the position is changed, at least an upper surface of the upper and lower surfaces of the rapier band is guided by the first rapier guide, and a lower surface of the reinforcement section or a lower surface of the rapier head is guided to the second rapier guide. Since the driving force acting position in the straight line band is in the vicinity of the height position of the center of the rapier head at least, the rapier head or the rapier band is guided only inside the inclined opening. Also in the configuration employing the guide, it has an excellent effect that the running stability of the rapier head can be improved. The.

Claims (8)

The rapier band having a first rapier guide outside the inclined opening and a second rapier guide inside the inclined opening, and equipped with a weft holding rapier head, is guided by the first rapier guide, In the weft inserting device in the rapier loom which runs a band linearly on a said 2nd rapier guide, and inserts a weft thread, A reinforcing part for maintaining a straight shape of the tip portion is provided at a tip end of the rapier band connected to the rapier head, and the reinforcing part and the at least one lower surface of the rapier head are in a straight state The lower position is lower than the lower surface, the height position of the guide position in the first rapid guide and the height position of the guide position of the second rapid guide are different, and at least an upper surface of the upper and lower surfaces of the rapier band The guide is guided by the first rapier guide, the lower surface of the reinforcement portion or the lower surface of the rapier head is guided to the second rapier guide, and the driving force acting position in the rapier band in a linear state is at least above. A weft insertion device in a rapier loom that is aligned near the height position of the center of the rapier head. The weft insertion device according to claim 1, wherein the upper and lower surfaces of the rapier band are guided by the first rapier guide. The said reinforcement part is a concave frame formed in U shape so that the cross-sectional shape of the said reinforcement part when it sees from the longitudinal direction of the said rapier band protrudes below the lower surface of the said rapier band. Weft insertion device in a rapier loom. The weft inserting device according to claim 1 or 2, wherein the reinforcing frame is simultaneously molded from the same material as the rapier band. The weft inserting device according to claim 1 or 2, wherein the reinforcing portion has a length of at least half of the stroke of the rapier head. 4. The weft inserting device according to claim 3, wherein the reinforcing frame is simultaneously molded from the same material as the rapier band. 4. The weft inserting device according to claim 3, wherein the length of the reinforcing part is at least half of the stroke of the rapier head. 5. The weft inserting device according to claim 4, wherein the length of the reinforcing part is at least half of the stroke of the rapier head.