JP4989098B2 - Weft insertion stabilization device for water jet loom - Google Patents

Description

  The present invention relates to an apparatus for stabilizing weft insertion in a water jet loom.

  In the water jet loom using pressure water as the weft insertion fluid, there is a phenomenon in which the jet water for weft insertion moves upward as it goes to the non-feed side. This phenomenon is presumed to occur ascending airflow in the weft insertion space in front of the kite when the kite in which a large number of kite feathers are arranged in parallel on the upper and lower cap parts performs a swinging motion.

  The reason for the upward air flow is that when the kite retreats after the beating, the air on the pre-weaving side is attracted to the kite side by the kite, and when the kite advances, the drawn air is pushed back to the pre-weaving side by the kite. It is thought that it rises.

  The upward movement phenomenon of jet water as described above is likely to occur during high-speed operation or water-saving operation. When such upwardly inclined upward spray water is generated, warp yarn is damaged by the upward spray water or weft insertion becomes unstable.

  As a technique for preventing the upward movement phenomenon of jet water as described above, there is a weft insertion stabilizing device described in Patent Document 1.

JP 2004-124318 A

  The above-described conventional weft insertion stabilizing device has a heel retainer that holds an airflow suppressing member that protrudes to the front side of the weave and extends in the weft insertion direction outside the range of the warp opening, and holds the upper or lower base portion or heel of the heel in the sley. It is provided at the upper or lower part of the member. Thereby, the rise of the air in the weft insertion space in the warp opening is suppressed by the airflow suppression member, and the upward movement phenomenon of the jet water is suppressed.

  However, in the conventional weft insertion stabilization device, the actual weft flying line moves in the warp moving direction during the weft insertion in the heel swinging process, and the weft insertion is not stable, resulting in poor weft insertion. Invite.

  The actual change in the weft flight line as described above is that when the kite is retracted (main shaft angle is 0 ° to 180 °), the weft insertion space becomes negative pressure and the actual weft run line moves to the kite side. When the kite moves forward (main shaft angle is 180 ° to 0 °), the weft insertion space is pressurized and the actual weft flying line moves to the front side of the weave.

  An object of the present invention is to stabilize an actual weft flying line by suppressing fluctuations in atmospheric pressure in a weft insertion space.

  The present invention relates to a water jet loom including an airflow restraining member provided on at least one of an upper side and a lower side of a reed, and including an airflow restraining member that protrudes to the front side of weaving and extends in the weft insertion direction outside the range of the warp opening. A weft insertion stabilization device is assumed.

  And in the said weft insertion stabilization apparatus, this invention is the attachment surface of the said airflow suppression member provided in at least one of the upper side and the lower side of the said collar, and the attachment surface of the said collar to which this airflow suppression member is attached, or the said A gap formed between the flange holding member holding surface for holding the flange in the sley, and a portion on the flange side of the airflow suppression member provided on at least one of the upper side and the lower side of the flange. It has at least one of the open holes.

  The weft insertion stabilizing device according to the present invention may further include a vent that is opened to the rear side of the ridge and communicated with the upper gap or hole.

  Moreover, the said airflow suppression member is good also as a thing from which the length dimension in the warp direction differs according to the location in the weft insertion direction. Furthermore, the size of the gap and / or the hole in the warp moving direction may be different depending on the location in the weft insertion direction.

  Further, the airflow suppressing member may have a position of the leading edge on the side before weaving in the warp moving direction depending on the position in the weft inserting direction, that is, having a missing portion depending on the position in the weft inserting direction. .

  Further, a plurality of the gaps may be formed side by side in the weft insertion direction, and at least two of the plurality of gaps may be formed in different sizes, and the airflow suppression member may be formed side by side in the weft insertion direction. The plurality of holes may be provided, and at least two of the plurality of holes may be formed in different sizes.

  In any of the above cases, the airflow suppression member may be formed of a plurality of airflow suppression pieces arranged adjacent to each other in the weft insertion direction.

  In the weft insertion stabilizing device, by forming at least one of the gap and the hole, it is possible to suppress fluctuations in the pressure in the weft insertion space at the position where the gap and / or hole is formed, and the actual weft flying It is possible to prevent the running line from moving in the warp moving direction. Details are as follows.

  When the kite moves backward, air outside the weft insertion space is taken into the weft insertion space through a gap and / or hole, so that the weft insertion space is prevented from becoming negative pressure, and when the kite moves forward, the weft insertion space The air is escaped from the weft insertion space to the outside through the gap and / or hole, so that the weft insertion space is prevented from being pressurized. Thereby, since the fluctuation | variation of the atmospheric | air pressure in the weft insertion space is suppressed, the change of the airflow to the warp moving direction is suppressed, suppressing generation | occurrence | production of the updraft at the time of original beating. As a result, the actual weft flying line becomes very stable and the number of times the loom stops is reduced.

  In the weft insertion stabilizing device according to the present invention, since the vent is provided on the rear side of the heel by providing the vent, the air outside the warp opening enters the weft insertion space when the heel retreats. Actively and efficiently incorporated, the actual weft flying line becomes more stable.

  Further, the length of the airflow suppressing member in the warp moving direction varies depending on the location in the weft insertion direction, and the gap or the size of the missing portion varies depending on the location in the weft insertion direction, By making the size of the hole formed in the airflow suppressing member different depending on the location in the weft insertion direction, a more stable weft flying line can be realized. More specifically, in actual weft insertion, the flying force decreases as the weft flies to the counter-feeding side, and the weft tends to fly downward by gravity, so the gap, the hole, or By changing the conditions such as the size of the missing portion according to the weft passing range at the time of advancement of the kite, it is possible to suppress the weft from flying downward by slightly generating an updraft, The actual weft flying line can be further stabilized. The condition may be changed by, for example, a configuration in which the upward airflow in the weft insertion space is increased by assuming that the gap, the hole, or the missing portion becomes larger at a position closer to the counter yarn supply side.

  [Example of water jet loom]

  Referring to FIGS. 1 to 3, the water jet loom 10 includes a plurality of reeds 16 in which a plurality of warps 12 fed in a sheet form from a warp beam (not shown) are supported in parallel on a plurality of reed frames 14. The warp frames 14 are moved up and down to move the warp yarns 12 up and down to form warp openings 18.

  The weft thread (not shown) is supplied from the weft insertion nozzle 22 to the pressure water while the reed 20 is positioned upstream of the weft insertion nozzle 22 in the moving direction of the warp 12 (that is, the front and rear direction). And injected into the weft insertion space 24 (see FIG. 3) in the warp opening 18.

  The weft thread that has been inserted is struck against the weave 26 by the heel 20 and woven into the woven fabric 28. The woven fabric 28 woven is wound around a cloth winding beam (not shown) via a plurality of guide rolls 30 as the weaving progresses.

  The heel 20 supports a plurality of wings 32 in parallel with upper and lower bases (that is, base parts) 34 and 36, and the lower base 36 includes a plurality of heel holding members 38 and a plurality of screw members 40. It is attached to the upper end of the sley 42 so as not to be relatively movable.

  The sley 42 is attached to a swing shaft 44 extending in the weft insertion direction at a lower portion thereof so as not to be relatively movable. The swing shaft 44 swings around an axis extending in the weft insertion direction in synchronization with the rotation of the main shaft of the loom 10, that is, reciprocates within a predetermined angle range. As a result, the scissors 20 are swung around the axis of the swing shaft 44 to make a striking motion.

  The jet water from the weft insertion nozzle 22 is moved forward (that is, downstream in the movement direction of the warp 12) and upward by the front shield plate (that is, the fixed cover) 46 and the splash guard (that is, the movable cover) 48, respectively. Can be prevented.

  The front shield plate 46 extends in the weft insertion direction (that is, the weaving width direction and the left-right direction) above one guide roll 30, and cannot move to the left and right loom frames (not shown) at the left and right ends. Is attached.

  The splash guard 48 extends in the weft insertion direction so as to openably cover the space above the warp 12 and the woven fabric 28 from the warp opening 18 to one guide roll 30.

  The splash guard 48 is rotatably supported by a support shaft 50 extending in the weft insertion direction above the warp yarn 12, and a downstream end portion in the moving direction of the warp yarn 12 (that is, the warp moving direction) is a front shield plate. 46 abuts. For this reason, the splash guard 48 can open and close the upper space of the area before and after the weaving 26 by rotating it angularly around the axis of the support shaft 50.

  [First Embodiment of Weft Insert Stabilizer]

  The weft insertion stabilizing device includes a pair of air flow suppression members 52 and 54 attached to the upper base 34 and the lower weave holding member 38 on the lower side so as to suppress fluctuations in the air flow in the warp opening 18. Including.

  Both airflow suppression members 52 and 54 are made of a plate member, and project outside the warp opening 18 in a state of projecting from the upper base 34 and the lower heel holding member 38 to the pre-weave 26 side, respectively. It extends continuously throughout the weft insertion direction.

  The upper airflow suppression member 52 has a Z-shaped longitudinal cross-sectional shape, and a plurality of screw members on the side of the upper base 26 of the upper base 34 so as to cover the space above the warp 12 from the upper side. 56 is attached.

  The lower airflow suppression member 54 has an L-shaped longitudinal cross-sectional shape, and the side of the lower heel holding member 38 on the front side 26 so as to cover the space below the warp yarn 12 from the lower side. A plurality of screw members 58 are attached.

  A plurality of spacers 60 supported by the screw member 56 are disposed between the airflow suppression member 52 and the base 34. Therefore, in the weft insertion stabilizing device, a plurality of gaps 62 extending in the weft insertion direction are located between the attachment surface formed by bending the end portion of the airflow suppression member 52 and the attachment surface of the base 34 and near the flange 20. In preparation.

  These gaps 62 are spaces that communicate with the upper and lower spaces of the airflow suppression member 52, and allow air to pass through the upper and lower spaces of the airflow suppression member 52. The plurality of gaps 62 adjacent in the weft insertion direction are partitioned from each other by the spacer 60 (see FIG. 2). In the illustrated example, the width dimension of the gap 62 in the warp moving direction is the same.

  As described above, when the airflow suppression members 52 and 54 that protrude toward the pre-weave 26 side and extend in the weft insertion direction outside the range of the warp opening 18 are provided on the base 34 and the heel holding member 38 of the heel 20, respectively. The rising of the air in the warp opening 18 is suppressed by the airflow suppression members 52 and 54, and the rising movement phenomenon of the jet water from the weft insertion nozzle 22 is suppressed.

  In addition, if there is a gap 62 between the base 34 and the airflow suppression member 52, first, when the collar 20 is moved backward as indicated by an arrow 64 in FIG. 3 (when the main shaft angle is in the range of 0 ° to 180 °), The air in the weft insertion space 24 is drawn toward the side of the kite 20, and the weft insertion space 24 is in a negative pressure state. However, at this time, the air in the space above the reed 20 flows as indicated by an arrow 66 and is taken into the warp opening 18, particularly the weft insertion space 24, through the gap 62. Thereby, it is suppressed that the weft insertion space 24 becomes a negative pressure state.

  On the other hand, when the reed 20 moves forward (when the main shaft angle is in the range of 180 ° to 0 °), the air in the weft insertion space 24 is pushed toward the weave 26 by the reed 20 and the weft insertion space 24 is added. Pressure state. However, at this time, since the air in the warp opening 18, particularly the weft insertion space 24, escapes to the space above the heel 20 through the gap 62, the weft insertion space 24 is prevented from being in a pressurized state.

  As a result, since the fluctuation of the atmospheric pressure in the weft insertion space 24 is suppressed, the fluctuation of the atmospheric pressure in the warp movement direction is suppressed while the generation of the upward air flow at the time of beating in the conventional technique is suppressed, and as a result, the actual weft The flight line is very stable and the number of loom stops is reduced.

  [Second Embodiment of Weft Insert Stabilizer]

  In the weft insertion stabilizing device shown in FIG. 4, the airflow suppression member 52 is folded back rearwardly above the base 34 integrally with the suppression portion 70 having its original function and the upper end portion of the suppression portion 70. And a folded portion 72. The folded portion 72 forms a vent hole 74 that opens to the rear side of the flange 20 and communicates with the gap 62.

  Even when the vent hole 74 that opens to the rear side of the kite 20 is provided as in the weft insertion stabilization device shown in FIG. 4, when the kite 20 is retracted in the direction indicated by the arrow 64 and in the opposite direction. When the kite 20 moves forward, the weft insertion space 24 is theoretically in a negative pressure state and a pressurized state, respectively.

  However, when the reed 20 is retracted, the air outside the warp opening 18 is taken into the weft insertion space 24 more actively and more efficiently than the first embodiment by the vent hole 74 opened to the rear side of the reed 20. . Thereby, it is suppressed more reliably that the weft insertion space 24 becomes a negative pressure state.

  Further, when the reed 20 moves forward, the pressure state in the weft insertion space 24 is suppressed by the vent hole 74 in which the warp opening 18, especially the air in the weft insertion space 24 opens to the rear side of the reed 20, and the gap Ascending airflow can be suppressed as in the case without 62. Thereby, since the upper part of the ridge 20 is not open | released directly, generation | occurrence | production of the updraft by the clearance gap 62 is suppressed.

  Moreover, since the folding | returning part 72 is provided, since the efficiency of taking in air goes up, the clearance gap 62 can be made small. Further, by reducing the gap 62, it becomes difficult for the updraft in the warp opening 18 to escape from the weft insertion space 24, so that the outflow of the updraft when the heel 20 moves forward is minimized.

  As a result, in the second embodiment shown in FIG. 4, the fluctuation of the airflow in the warp moving direction is suppressed, and the actual weft flying line is extremely stabilized.

  [Third embodiment of weft insertion stabilizing device]

  In the weft insertion stabilizing device shown in FIG. 5, a plurality of spacers 60 are arranged between the mounting surface of the lower heel holding member 38 and the bent mounting surface of the lower airflow suppression member 54. The gap 62 is provided on the lower airflow suppression member 54 side. The lower airflow suppression member 54 may be attached to the base 36 in detail.

  In the third embodiment, when the reed 20 is advanced and retracted in the direction of the arrow 76 and in the opposite direction, air 62 outside the warp opening 18 and air inside the warp opening 18 is formed on the lower side, respectively. Accordingly, the weft insertion space 24 is suppressed from being in a pressurized state and a negative pressure state, and the actual weft flying line is extremely stabilized.

  [Fourth Embodiment of Weft Insert Stabilizer]

  The weft insertion stabilizing device shown in FIG. 6 is provided with a plurality of gaps 62 in the upper and lower airflow suppression members 52 and 54 in combination with the second and third embodiments. Also in the fourth embodiment, the negative pressure state and the pressurized state of the weft insertion space 24 are suppressed in the same manner as in the first to third embodiments described above, and the actual weft flying line is extremely stabilized. To do.

  [Fifth Embodiment of Weft Insert Stabilizer]

  As shown in FIG. 7 as an example, instead of the gap 62 in the first to fourth embodiments, a plurality of holes 80 may be formed in at least one of the upper and lower airflow suppression members 52 and 54.

  For example, in the example shown in FIG. 7, instead of the gap 62 in the first embodiment, a plurality of holes 80 are formed near the flange 20 of the upper airflow suppression member 52. In this example, a notch is formed on the attachment side of the flange 20 of the airflow suppression member 52, and a portion surrounded by the notch and the base 34 when the airflow suppression member 52 is attached to the base 34 is defined as a hole 80. Accordingly, it can be said that the hole 80 is substantially provided in the airflow suppression member 52. In the example illustrated in FIG. 7, the shape of each hole 80 is a rectangle, but may be an appropriate shape such as an oval, an ellipse, or a circle.

  When the hole 80 is provided in the upper airflow suppression member 52, a vent hole 74 opened to the rear side of the flange 20 by the folded portion 72 in the third embodiment shown in FIG. 4 may be provided.

  The fifth embodiment also operates in the same manner as the first to fourth embodiments, and the same effect can be obtained.

  In the example shown in FIG. 7, the spacer 60 is not provided. However, in any of the first to fourth embodiments, in addition to the gap 62, the plurality of holes 80 in the fifth embodiment may be formed in at least one of the upper and lower airflow suppression members 52 and 54.

  Instead of forming notches in the airflow suppression members 52 and 54 as shown in FIG. 7, holes 80 may be formed in the airflow suppression members 52 and 54 themselves. Specifically, the hole 80 is formed in a region on the heel side of the intermediate position in the warp direction of the airflow suppression members 52 and 54.

  [Sixth Embodiment of Weft Insert Stabilizer]

  As shown in FIG. 8 as an example, in any of the above-described embodiments, the length dimension of the upper or lower airflow suppression member 52 or 54 in the warp moving direction and the width dimension of the gap 62 or the hole 80 are determined in the weft insertion direction. Different values may be used depending on the location.

  In the embodiment shown in FIG. 8, each of the airflow suppression members 52 and 54 is a plurality (four in the illustrated example) of airflow suppression pieces 82, 84, 86, 88 arranged adjacent to each other in the weft insertion direction. including. The weft is inserted from the left side in FIG.

  The airflow suppression pieces 82 and 84 located on the yarn supply side (that is, the weft insertion side) form a gap 62 between the base 34 and the airflow suppression pieces 82 and 84 of the airflow suppression members 52 and 54 by the spacer 60. ing. However, the width dimension along the warp moving direction of the gap 62 formed by the airflow suppression piece 82 positioned closest to the yarn supply side is larger than that formed by the airflow suppression piece 84. This is done by using spacers 60 of different length dimensions.

  The airflow suppression pieces 86 and 88 located on the side opposite to the yarn feeding side (that is, on the side opposite to the weft insertion side = arrival side) are not used on the base 34 on the upper side and on the hook holding member 38 on the lower side without using the spacer 60. Directly screwed.

  The length dimensions (L1 to L3) along the warp moving direction of the airflow restraint pieces 82, 84 and 86 excluding the airflow restraint piece 88 positioned closest to the yarn feeding side are the same. However, the length dimension (L4) of the airflow restraint piece 88 along the warp moving direction is smaller than that of the other airflow restraint pieces 82, 84 and 86. Further, the gap 62 in the airflow suppression piece 84 on the counter yarn feeding side is smaller than the gap 62 in the airflow suppression piece 82 on the yarn supply side.

  Since the width dimension of the gap 62 along the warp moving direction and the length dimensions (L1 to L4) of the airflow suppression pieces 82, 84, 86, 88 are as described above, the heel 20 (or heel holding in the warp moving direction) The length dimension of the airflow suppression members 52, 54 from the member 38) varies depending on the location in the weft insertion direction. Specifically, the length dimension and the gap of the airflow suppression pieces 82, 84, 86, 88 in the warp moving direction become smaller from the yarn feeding side to the counter yarn feeding side.

  That is, the position in the warp moving direction of the leading edge of the airflow suppressing members 52 and 54 on the side of the weave 26 differs depending on the position in the weft insertion direction. Specifically, the position is located on the heel side from the yarn feeding side toward the counter yarn feeding side. For this reason, a missing portion 90 is formed on the front side of the weave side airflow suppression members 52, 54 with respect to the airflow suppression members 52, 54 on the yarn supply side, About 54, the missing part 90 becomes larger.

  When an imaginary line parallel to the extending direction of the heel is drawn from the position of the distance L1 + L5 from the base 34 to the tip edge of the airflow suppression piece 82 where the front edge of the airflow suppression member is farthest away, the airflow suppression piece 82 and Are respectively formed in the regions corresponding to the different airflow suppression pieces 84, 86, and 88. For example, the position of the distance L2 + L6 from the base 34 to the tip edge of the airflow suppression piece 84 and the imaginary line The missing portions 90 are respectively formed in the missing spaces between the two. In the case of the airflow restraint piece 84 adjacent to the airflow restraint piece 82, the difference between the distance L1 + L5 and the distance L2 + L6 shorter than this is missing at the tip in a part of the front edge of the airflow restraint piece 84 on the pre-weave 26 side. A portion 90 is formed.

  In the illustrated example, the length dimensions L1, L2, and L3 of the airflow restraint pieces 82, 84, and 86 are 35 mm, the length dimension L4 of the airflow restraint piece 88 is 25 mm, and the width dimension L5 of the gaps 62 and 62 is shown. And L6 are 6 mm and 3 mm, respectively. For this reason, the airflow suppression pieces 82, 84, 86, and 88 protrude toward the front of the weave 26 as the airflow suppression pieces on the yarn feeding side.

  That is, in this embodiment, when the reed 20 is moving forward and backward, it is divided into two regions in each weft passing range, and the boundary between these regions, that is, the spindle angle at which the swinging direction of the reed 20 is reversed is about 180 °. At the boundary, a gap 62 and a hole 80 are formed on the yarn supply side of the boundary, and the gap 62 and the hole 80 are made larger toward the yarn supply side. The missing part 90 is present on the side opposite to the yarn feeding side, and the missing part 90 is made larger toward the side opposite to the yarn feeding side.

  In the embodiment shown in FIG. 8, the tip of the weft thread inserted from the yarn feeding side passes through the area on the left side formed by the airflow suppression pieces 82 and 84 when the reed 20 is retracted (the first half of weft insertion). When the kite 20 moves forward (the second half of the weft insertion), it passes through the region on the right side formed by the airflow suppression pieces 86 and 88.

  In general, the weft flying force is large when the tip of the weft is flying on the yarn feeding side area (that is, the first half area) when the reed 20 is retracted, but the weft flying force gradually decreases during weft insertion. To do. As a result, when the tip of the weft is flying in the region on the side opposite to the yarn feeding side (that is, the latter half region), the weft flying speed decreases due to gravity in the latter half region, so that the weft flying position is It tends to be displaced downward.

  However, in the embodiment shown in FIG. 8, the weft when the leading end of the weft passes through the first half region due to the air being taken into the weft insertion space 24 from the gap 62 and the airflow suppression pieces 82 and 84 on the yarn feeding side. The negative pressure in the insertion space 24 is effectively suppressed. Thereby, combined with the large flying force of the weft, the movement of the weft flying position toward the heel 20 is suppressed.

  Further, the airflow suppression pieces 86 and 88 in the latter half region where the tip of the weft flies when the kite 20 moves forward do not have the gap 62, and the leading edge on the front side of the weave 26 is more than that of the airflow suppression pieces 82 and 84. It is retracted from the weave 26 and a missing portion 90 is formed. For this reason, in the second half region, a slight updraft of the weft insertion space 24 is generated, and the weft can effectively suppress the descent of its flying position by the updraft.

  In the embodiment shown in FIG. 8, the movement of the weft flying position toward the heel 20 side is suppressed toward the yarn feeding side, whereas the upward airflow is adjusted toward the counter yarn feeding side to adjust the weft flying position. The descent is suppressed. As a result, the actual weft flying line becomes more stable.

  In any of the above embodiments, when the gap 62 or the hole 80 is located at a position far away from the heel 20, the air in the warp opening 18 escapes from the gap 62 or the hole 80 when the heel advances, and the ascending air current enters the weft. It occurs in the space 24, and as a result, the actual weft flying line fluctuates up and down.

  In particular, if the gap 62 or the hole 80 exists above the weft insertion space 24, the weft will also rise due to the upward airflow as described above. For this reason, it is preferable to provide the gap 62 or the hole 80 as close to the flange 20 as possible.

  In the sixth embodiment, without providing the gap 62 or the hole 80, only the length dimension of the upper or lower airflow suppression member 52 or 54 in the warp moving direction is set to a different value depending on the location in the weft insertion direction. Also good. Further, the length dimension of the upper or lower airflow suppression member 52 or 54 in the weft insertion direction and the warp movement direction, and the size of the gap 62, the hole 80, and the missing portion 90 are determined by the air flow in the weft insertion space. It can be adjusted according to the configuration of the loom (specifically, the striking stroke, the weaving width, the weft insertion timing, the loom rotation speed, etc.).

  As described above, the gap 62 or the hole 80 that allows the movement of air with respect to the weft insertion space 24 may be provided in either one of the upper and lower airflow suppression members 52 and 54, or may be provided in both. The size of the gap 62 may be adjustable by replacing spacers having different thicknesses, and the size of the hole 80 may be adjusted by, for example, overlapping and fixing a member closing the hole 80 to the hole 80 so as to be movable. It may be adjustable.

  As shown in FIG. 8, the airflow suppression member 52 or 54 is inserted into the length dimension of the upper or lower airflow suppression member 52 or 54 and the width dimension of the gap 62 or the hole 80 in the warp movement direction. You may form in a shape which becomes a different value according to the location in a direction. Further, the airflow suppression member 52 or 54 may be provided integrally with the base 34 or 36 or the heel holding member 38.

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

It is a figure which shows an example of the water-jet type loom provided with the 1st Example of the weft insertion stabilization apparatus which concerns on this invention. It is the top view which looked at the weft insertion stabilization apparatus shown in FIG. It is a figure for demonstrating the detail and operation | movement of the weft insertion stabilization apparatus shown in FIG. It is a figure for demonstrating the detail and operation | movement of 2nd Example of the weft insertion stabilization apparatus which concerns on this invention. It is a figure for demonstrating the detail and operation | movement of 3rd Example of the weft insertion stabilization apparatus which concerns on this invention. It is a figure for demonstrating the detail and operation | movement of 4th Example of the weft insertion stabilization apparatus which concerns on this invention. FIG. 9 is a plan view similar to FIG. 2, showing a fifth embodiment of the weft insertion stabilizing device according to the present invention. It is a top view similar to FIG. 2 which shows the 6th Example of the weft insertion stabilization apparatus which concerns on this invention.

DESCRIPTION OF SYMBOLS 10 Water-injection type loom 12 Warp thread 14 Reed frame 16 Reed 18 Warp opening 20 Reed 22 Weft insertion nozzle 24 Weft insertion space 26 Weaving 28 Weaving cloth 30 Guide roll 32 Reed wings 34, 36 Base 38 Reed holding member 40 Screw member 42 Sley 44 Oscillating shaft 46 Front shield plate 48 Splash guard 50 Support shaft 52, 54 Air flow suppressing member 56, 58 Screw member 60 Spacer 62 Clearance 64 Haze movement 66, 78 Air flow 70 Suppressing portion 72 Folding portion 74 Ventilation hole 80 Hole 82, 84, 86, 88 Airflow suppression piece 90 Missing part

Claims (8)

Weft insertion stability of a water jet loom including an airflow suppression member provided on at least one of the upper side and lower side of the reed and protruding to the front side of the weave outside the warp opening and extending in the weft insertion direction In the conversion device,
An attachment surface of the airflow suppression member provided on at least one of the upper side and the lower side of the rod, and an attachment surface of the rod to which the airflow suppression member is attached or an attachment surface of the rod holding member that holds the rod on the sley A gap formed therebetween, and at least one of holes formed in a location on the side of the heel of the airflow suppression member provided on at least one of the upper side and the lower side of the heel,
A water jet loom weft insertion stabilization device characterized by the above. Furthermore, it is a vent that is open to the rear side of the ridge, and includes a vent that communicates with the gap or the hole on the upper side.
The weft insertion stabilizing device for a water jet loom according to claim 1. The airflow suppression member provided on at least one of the upper side and the lower side of the heel is formed so that the length dimension in the warp movement direction differs depending on the location in the weft insertion direction,
The weft insertion stabilization device for a water jet loom according to claim 1 or 2, The size of the gap and / or the hole in the warp movement direction varies depending on the location in the weft insertion direction,
The weft insertion stabilization device for a water-jet loom according to any one of claims 1 to 3, wherein The airflow suppression member provided on at least one of the upper side and the lower side of the reed is formed such that the position of the leading edge on the side before weaving in the warp moving direction differs depending on the location in the weft insertion direction. Yes,
The weft insertion stabilization device for a water-jet loom according to any one of claims 1 to 4, wherein A plurality of the gaps are formed side by side in the weft insertion direction,
At least two of the plurality of gaps are formed in different sizes,
The weft insertion stabilization device for a water-jet loom according to any one of claims 1 to 5, wherein The airflow suppression member provided on at least one of the upper side and the lower side of the ridge has a plurality of holes formed side by side in the weft insertion direction,
At least two of the plurality of holes are formed in different sizes;
The weft insertion stabilizing device for a water jet loom according to any one of claims 1 to 5. The airflow suppression member provided on at least one of the upper side and the lower side of the heel is composed of a plurality of airflow suppression pieces arranged adjacent to each other in the weft insertion direction.
The weft insertion stabilization device for a water jet loom according to any one of claims 1 to 7,

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